What is a dust collector and how to choose its proper type

what is a dust collector
What is a dust collector and how to choose its proper type - Air is an important part in human life. Air pollution in the form of smoke, dust or other impurities will affect human health, especially with regard to the respiratory system. Most of the air pollution comes from motor vehicles and industrial machines. Employees who are in the industrial environment is the first time will receive the impact of air pollution due to industrial machines, if the air-handling was not enough.

In this post we will explain how the air handling due to dust produced by industrial machinery. Most industries use a dust collector system to solve these problems. Dust Collector has many types so we can choose one of its kinds in accordance by the characteristics of the dust. Then we do the planning dust collector to find the air suction capacity, air flow, static pressure and power fan based on the amount of dust, the number of suction points and the size of the suction area. (read more: dust collector design) Finally we do the planning system in accordance by the type dust collector that we have set. This post will be limited to the process of selecting the type dust collector by first going to explain what is the dust collector according to the definitions, functions, principles and types.


What is a dust collector?

Dust collector is a system to keep the air quality in the room kept clean and free from dust or dirt as a result of industrial processes. The principle is to collect dust or dirty air from the source of dust through the process of exploitation by the blower, then do filtering dirty air so that the air coming out is clean, while the dust gathered in one place. Therefore, there are three principles of the dust collector such as collection, suction and separation.

Collection is the process of collecting dust from the dust source area. Dust Collection using the hood is capable of capturing dust scattered in the suction area and collect them in a ducting. If there are several sources of dust are far apart, it can use some hood with ducting continued. Ducting system must be designed in accordance by the place of the dust source to produce a good and effective process of dust collection. (Design of ducting system)

Suction is the process of sucking dust from each hood (suction area) to get into the dust collector through a ducting system. Suction of dust collector is using a blower system that is driven by an electric motor. Determining of blower capacity will greatly affect the suction ability of dust collector. Therefore, the blower calculation should be based on the air capacity from of suction area and the pressure loss (static pressure) of the ducting. (Design of blower system)

Separation is the process of separating the dust in the air. Dust entering through the hood and ducting system into the dust collector in a state mixed with air (dirty air). Separation system in the dust collector is using several types such as centrifugal systems, bag house system, electrostatic system and others. All these systems produce clean air out through ducting blower and dust collected in the dust bag (dust container).
Therefore, almost all the dust collector is using the same collection and suction system or similar. Dust collector is distinguished by its type of separation system.

How to choose a dust collector type?

There are so many manufacturing industries that use various types of dust collector to neutralize the air from industrial dust. Determining the types of dust collector depends on several aspects such as the type of dust, the dimensions of dust, measure of dust, ambient conditions, costs and others. In general we can distinguish the types of dust collector based water filtration system or separation system including inertial system, wet filtration system, dry filtration system and electrostatic filtration system.

Dust collector with inertial system is a dust collector that uses a force combination of centrifugal, gravity and inertia moment in the separation process of dust and air. Dust collector uses the concept of differences in specific gravity of dust and air. The principle works is dirty air (water and dust) streamed centrifugal that causes dust moves down and clean air moves up. There are two dust collectors type who use this system are settling chamber and cyclone dust collector. Dust Collector this type is suitable for coarse dust, because it has a greater density making it easier and effective in its separation process.

Dust collector with wet filtration system is a dust collector that uses a wet media (such as water or a wet cloth) as a filter to separate the air with dust. Dust collector uses the concept of water filtration is the water ability to dissolve the dust or the water ability to clean the dust trapped in the media. Its working principle is to drain the dirty air filter area so the dust will stick to the filter (scrubber). Then the filter is rinsed by water, so dust off will be dissolved and carried away by the water. Dust collector type is very suitable for dust or gas that comes from hazardous chemicals that dissolve in water.

Dust collector with cleaning filtration system is a dust collector that uses a dry media (dry cloth) as a filter to separate the air with dust. Dust collector uses water filtration concept is the filter ability to withstand dust and emit clean air. The principle works is supplied to the dirty air filter area so the dust will stick to the filter bag while the clean air out through blower. Then dust off the filter bag is cleaned by vibration or air pressure, so the dust will fall into dust container. There are several types of dust collectors that use this system include shaker bag filter dust collector, pulse jet bag filter dust collector and filter cartridge dust collector. Dust Collector is a very common type used for various types of dust is not harmful either fine or coarse dust.

Dust collector with electrostatic filtration system is a dust collector which uses electrostatic force to separate the air with dust. Dust Collector uses the concept of electrostatic precipitator is a technology for separating dust by giving an electric charge to him. Its working principle is to offer a negative charge on the dust through the electrodes, and then the dust is passed into a column made of plate that has a more positive charge, then naturally the dust will be attracted by the plate and separated by air. Dust Collector this type is suitable for combustion in boiler dust containing oxide compounds are toxic.

Types of dust collector that has a level of efficiency that is different from low-level to high level, therefore we need to know and understand the characteristics of each type dust collector so that we can select or specify the type dust collector that fits our needs. Based on the above classification, we can choose some type dust collector that usually are used by the industry include:
  1. Settling Chamber Dust Collector
  2. Cyclone (Centrifugal Dust Collector)
  3. Wet Scrubber Dust Collector
  4. Shaker Bag Filter Dust Collector
  5. Pulse Jet Bag Filter Dust Collector
  6. Cartridge Filter Dust Collector
  7. Electrostatic Precipitator Dust Collector
That is a description about what is a dust collector and how to choose its proper type. If you find misconceptions in this post, please give correction in the comment box.

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MACHINE INFO Updated at: 13:04

Worm Gear Design: Gear Parameter and Description

Worm Gear Design
Worm Gear Design: Gear Parameter and Description - In the previous article we have explained some of the gear transmission systems such as spur gear, helical gear and bevel gear. If we will connect two parallel shafts, we can use a spur gear or a helical gear. (Read more: spur gear design) (Read more: helical gear design) If we will connect two mutually perpendicular shafts (right angle), we can use a bevel gear. (Read more: bevel gear design)

In this article we will explain about the worm gear. Worm gear is always paired with a worm screw in the transmission system. We can use worm screw and worm gear, when shaft are at right angle and need more reduction in speed between the driving and driven shafts. Couple worm gear is consisting of a worm has an external threaded and a worm gear associated with worms.


What is a worm screw and worm gear?

A worm screw is a cylinder on which is cut single or multiple start acme-type thread. The angle of this thread ranges from a 14,5 to 30o pressure angle. As the angle of the worm increases, the greater of pressure angle must on the side of the thread.

The teeth on a worm gear are machined on a peripheral groove which has a radius equal to half the root diameter of the worm. The drive ratio between a worm and worm gear assembly is one to the number of teeth in the worm gear. The worm which meshes with the worm gear may be a single or multiple start thread. A worm with a double start thread will revolve the worm gear twice as fast as a worm with a single start thread and the same pitch. Thus if worm gear had 50 teeth, the ratio would be 50:1, providing the worm had a single start thread. If it had a double start thread, the ratio would be 50:2 or 25:1.

Based on the above understanding, we can know the advantages and disadvantages of worm gear transmission. Among its advantages are very prominent on his worm gear is smooth and almost without sound, as well as allowing large transmission ratio. Reduction ratio can reach 1/100. However its disadvantages, we can not reverse the direction of transmission of the worm gear to increase the rotation of the worm wheel to the worm screw. This sort of thing will 'lock itself' because the worm screw will stop rotation turn of the worm gear. Another disadvantage of the worm gear is a low efficiency, especially if the pitch angle is small.


Worm screw and worm gear parameter

The standard measure of the worm screw is outside diameter, pitch diameter, root diameter, pitch screw, pitch module, axial module and pitch angle. The standard measure of the worm gear is outside diameter, pitch diameter, throat diameter, root diameter, normal module, arch gear radius and arch gear angle. Worm screw and worm gear is an integral gear paired, so that some of its parameters must have the same dimension is normal module, addendum, dedendum and whole depth. Another important measure as a basis for gear calculation is shaft distance and clearance. This measure will decide the amount of friction between the worm screw and worm gear.
Worm screw parameter

Worm gear parameter

Such as generally gears, module is the main measure of gears that will decide the size of the gear. Worm screw and worm gear pairs must have the same module size. Worm gear is using the normal module that has the same module profile with the generally gears as to spur gear, helical gear and bevel gear. The worm screw is using the axial module that has a trapezoidal screw profile. The relationship between the normal module and the axial module is affected by the pitch angle. If mn is normal module, ms is module axial and g is pitch angle then, relations between them are:
Worm gear module formula
We can also calculate the module value by shaft axial distance (a) and the teeth number of worm gear (Z) is through the formula:
Worm screw module formula
In the production process of worm screw, don’t know the term of module, however using the pitch screw. Pitch screw is the distance between two peaks screw in one full turn. If the screw number of worm more than two (z> 2) then the distance between the peaks screw nearby called pitch modules. If the screw number of worm equal to one (z = 1) then pitch screw equal to the pitch module. If ms is the axial module, g is the pitch angle, z is the screw number of worm, pm is pitch module and ps is a pitch screw, the equation between them are:
Pitch module and pitch screw formula

That is a description about Worm Gear Design: Gear Parameter and Description. If you find misconceptions in the worm gear formula, please give me correction in the comment box.

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MACHINE INFO Updated at: 11:27

Rice Mill Machine: Paddy Rice Huller and Husk Separator

Brown Rice Huller and Husk Separator
Rice Mill Machine: Paddy Rice Huller and Husk Separator - Rice milling is one of the post-harvest handling technology that is quite popular in agriculture (rice farmers). This machine has helped many farmers in terms of processing paddy to rice. In the aspect of business, these machines are also able to increase the marketability of agricultural products as opposed to selling in the form of paddy directly. On the other hand, demand for rice continues to increase, because the rice has been a staple food for most countries in the world. Hence the development of rice mill machine is more effective, more efficient and more quality is promising.

In the processing of un-hulled rice, in order to produce high-quality rice, we have to use some machines like paddy rice huller machine, husk separator, rice polisher and rice sifter.

(1) Paddy rice huller machine is used to break and release bran (husk). Input materials of this machine is a un-hulled rice with a moisture content of about 14% and output in the form of brown rice (pure white).

(2) Husk separator is used to separate grain of rice and husk using a blower system. The system utilizes the difference in specific gravity between rice and husk. Husk which has a smaller specific gravity to be sucked by the blower, while rice tend not to be affected by the air blower and straight out through the rice outlet.

(3) Rice polisher is used to remove the epidermis (aleuron) on brown rice to produce white rice that is ready to be marketed or cooked. This machine uses the screw extruder system in the cylinder which has the inner surface uneven. When brown rice fed into the cylinder it will jostle and rub against the cylinder surface which causes the epidermis to be eroded.

(4) Rice shifter is used to separate the rice based group quality such as whole rice (best quality) and broken rice (second quality). This machine uses a filter screen plate or cylinder shaped. Rice with some sort of quality level will be mixed again with a certain ratio to determine the selling price before the rice is packaged to be marketed.

This article will explain in more detail on the description of the machine, but it is limited to brown rice huller and separator machine. Both machines will be combined into one machine as the title of this article, namely Rice Mill Machine: Paddy Rice Huller and Husk Separator. Description of these machines include machine construction, main part of machine, basic concept of brown rice huller and separator, machine  principle and machine operation.


Construction of Rice Mill Machine

Construction designed for rice mill machine refers to the incorporation of brown rice huller and husk separator. Brown rice huller system uses the speed difference on the rubber roll, so the construction will put on top two pieces of rubber roll just below the hopper. Husk separator using air blower system, so the construction will accommodate air flow toward a brown rice and husk are out of rubber roll. Machine construction along with its main parts are complete can be seen in the picture below.
Rice Mill Machine Construction

Constructions of rice mill machine in the image above showing some of the main parts of the machine are:
1) Shutter, as the main valve controls the expenditure of grain in hopper.
2) Feeding roll, a roll leveler serves to regulate the importation and spread the rice on the rubber roll.
3) Rubber roll, serves as a breaker of rice
4) Roll gap adjuster, serves as spacer rubber rollers.
5) Distribution, serves to divide the flow of brown rice out of a rubber roll.
6) Wind adjuster controls the air entering the blower.
7) Blower, suction air function is the air flow from inlet to brown rice husk and then brought out through husk outlet.
8) Husk outlet, serves as the drain husk
9) Rice outlet, serves as a channel that has a separate brown rice with husk


The basic concept of huller rubber rolls

Paddy rice huller uses two pieces of rubber roll as a means of breaking the un-hulled rice. Both roll is mounted adjacent (parallel) with a certain distance and rotated at different speeds in opposite directions. Roller that rotates at high speed is called main rollers or fixed roll, while the other roll is called auxiliary rollers or moveable roll. The main roll is mounted on a stationary shaft while the auxiliary roller mounted on a shaft whose position can be shifted to adjust the distance (gap) between the two roll. Auxiliary roll speed should be slower for about 24% of the main roll.

The basic concept of 'huller rubber roll' is the process of peel bran (husk) using frictional forces that occur between rice and rubber roll. When un-hulled rice through the gap between the rubber roll, on the one hand will be restrained due to friction with the auxiliary roll and on the other hand will be pushed due to friction with the main roll. Because the distance between the two rollers arranged around 0.5-0.8 mm or smaller than the thickness of the un-hulled rice grain, then the friction that occurs will be stronger than the resilience husk itself. The condition causes the husk to be separated from brown rice.


The basic concept of husk separator

Husk separator using air blower system with the capacity to suck husk but unable to suck brown rice. The condition can occur because of differences in density between brown rice and husk, brown rice which have the higher density. When brown rice that has been separated by the rubber roll out of the husk and fell through the air flow, then the husk will be pushed into the airways and out through the husk outlet, while brown rice will keep falling towards the rice outlet.

The machine is equipped with two air ducts. The first ducts as the main separator which serves to suck out husk of the rubber roll. The second ducts serves as a second separator. If there are brown rice that is carried along with the husk on the main separator or if there are husk that is carried along with paddy rice on the main separator, it will be separated again by the second separator.


Principle of Rice Mill Machine

Rice milling principle is to use electricity on continuous moving parts and uses a manual system the regulator components. Components are driven by electricity like rubber rolls and air blower. Components are driven by manually like shutter, feed adjuster, roll gap adjuster and wind adjuster.

Its mechanism of action begins with un-hulled rice entering into the hopper. Power comes from an electric power (electro motors or diesel engines) rotating rubber roll through the transmission system with a certain ratio. When shutter is opened, un-hulled rice will go down and get into the gap between rubber roll. At that time, there is a huller process (husk peeled and separated from paddy rice). Huller processing speed can be set through the shutter, the feed adjuster and roll gap adjuster. Then rice descending through two distribution channels arranged by the distribution handle. The two channels will pass through the air suction area. In this area husk will be attracted or sucked out through the husk outlet, while paddy rice remains down towards the rice outlets. The speed and power of the suction blower can be adjusted by the wind adjuster handle.


Operation of Rice Mill Machine

How to operate rice mill machine is as follows:
  1. Make sure the 'shutter' in a closed condition, prior to un-hulled rice (paddy) is inserted.
  2. Put paddy rice into hopper.
  3. Turn on drive system (electric motors or diesel engine), make sure the rubber roll and air blower has been active.
  4. Open the 'shutter' slowly, so that paddy can be entered to rubber roll.
  5. Set velocity flow of the paddy with a twist 'feed adjuster'.
  6. Set distance between roll by turning the ‘roll gap adjusters' to match thickness of paddy. If distance between roll is too large will cause a lot of paddy were not peeled, while distance between roll that is too small will cause a lot of paddy broken (brown rice is not intact)
  7. Adjust speed of wind by turning the 'wind adjuster'. Wind speed that is too large will cause a lot of brown rice sucked, whereas if the wind speed is too small will cause a lot of husk were not sucked (with brown rice together).
  8. Place the rice container under 'rice outlets' and the husk container under 'husk outlet'.
  9. If there husk still united with paddy rice which are not broken, then input back into the hopper.
  10. Repeat the process steps start point 1.
  11. If all the processes are finished, turn off the machine.
That is a description about Rice Mill Machine: Paddy Rice Huller and Husk Separator. If you find misconceptions in this post, please provide the correction in the comment box.

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MACHINE INFO Updated at: 21:39

What is a Timing Belt and How to Select Its Type?

Timing Belt Transmission
What is a Timing Belt and How to Select Its Type? - Timing belt is one type of transmission belt that is already known the general public, especially in automotive, because timing belt is one of the automobile parts. Timing belt selected based on standard type, width and length. This post will explain how to choose the timing belt type in accordance with rotation speed and power are transmitted, how to determine the timing belt width corresponding to power capacity that is transmitted and how to determine the timing belt length corresponding to the distance between shaft and the diameter of timing pulley. But before selecting timing belt, we need to know in advance what is a timing belt.

What is a timing belt?

Timing belt is a belt transmission which has a tooth profile and paired with the timing pulley-shaped gear as well. Therefore, timing belt hook can perform transmission like gears and chains so it can be used for motion with a fixed ratio of rotation (without slippage).

Timing belt is made of neoprene rubber or polyurethane plastics as raw material with a core made of glass fiber or steel wires as well as teeth are carefully molded inner surface of belt. Timing belt has a maximum speed limit of approximately 35 m/s which is higher than v-belt and power transmitted can be reach 60 kW up to 100kW.

Generally, belt transmission has advantages such as low cost, simple construction and easy to get a speed ratio needed. Timing belt has another advantage is that it avoids the occurrence of slippage between belt and pulley.

How to choose the timing belt type

Selection of timing belt types based on small pulley rotation speed and power transmitted. If the higher speed of small pulleys and the greater power transmitted so the greater timing belt size is selected. Selection of timing belt size refers to the diagram supplied by the manufacturer of the timing belt. Each type of timing belt has a different diagram. For security timing belt, the power transmitted is motor power multiplied by some factor correction with the following formula:
Power transmitted of timing belt formula
Note:
Pd = Power transmitted (kW)
P = Motor electric power (kW)
fc = Load factor
f’c = Velocity ratio factor
factor of load and velocity ratio

Based on tooth shape, timing belt has several types like inch timing belt, metric timing belt and high torsion timing belt. For each type of tooth has a size variation determined based on the distance between the teeth timing belt (pitch). How to choose the timing belt size? Here we will explain how to choose the timing belt size for each type.

Inch type of timing belt (XL, L, H, XH)

Inch type of timing belt also called classical timing belt has a teeth trapezoidal shape with the distance between teeth (pitch) in inches units. Classical timing belts offer a maintenance free and economical alternative to conventional drives like chains and gears. This timing belt is capable of transmitting up to 100 kW and speeds of 10.000 rpm. This timing belt can be used in a wide range of applications from light duty office machinery to heavy duty industrial drives. 
Inch timing belt size
To select a drive it is necessary to know the driver and driven shaft speeds, the demand power, proposed centre distance and duty cycle. This timing belt has a variation size with codes are XL, L, H and XH. We can be use the diagram below to select a timing belt size with regard to small pulley speed and power transmitted.
Inch timing belt selection diagram

Metric type of timing belt (T2.5, T5, T10, AT5, AT10)

Metric type of timing belt has a teeth trapezoidal shape with the distance between teeth (pitch) in metric units. The metric timing belt series was created to meet industries need for polyurethane belts with a high quality ratio. They provide maximum power transmission combined with perfect tooth meshing. This timing belt is capable of transmitting up to 60 kW and speeds of 10.000 rpm.
Metric timing belt size
To select a drive it is necessary to know the driver and driven shaft speeds, the demand power, proposed centre distance and duty cycle. This timing belt has a variation size with codes are T2.5, T5, T10, AT5 and AT10. We can be use the diagram below to select a timing belt size with regard to small pulley speed and power transmitted.
Metric timing belt selection diagram

High torsion type of timing belt (3M, 5M, 8M, 14M)

High torsion timing belts or HTD timing belt offer optimized load distribution through the rounded tooth form, guaranteeing high power transmission in low speed and high torque applications. HTD timing belt is capable of transmitting up to 300 kW and speeds of 14.000 rpm. HTD timing belts can be used in a wide range of applications from minimum drives like electronic power tools to heavy duty machinery where durability and low maintenance is required. 
High torsion timing belt size

To select a drive it is necessary to know the driver and driven shaft speeds, the demand power, proposed centre distance and duty cycle. This timing belt has a variation size with codes are 3M, 5M, 8M and 14M. HTD timing belt made by certain manufacturers such as Japanese Misumi is usually to use the code of SM likes S3M, S5M, S8M, and S14M. We can be use the diagram below to select a timing belt size with regard to small pulley speed and power transmitted.
High torsion timing belt selection diagram

That is a description about What is a Timing Belt and How to Select Its Type?. If you find misconceptions in this post, please provide the correction in the comment box.

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MACHINE INFO Updated at: 21:49

Specification of Paper Shredder Machine

Paper shredder machine
Specification of Paper Shredder Machine - Paper shredder used to cut the paper until it reaches a certain size according to the capacity and type of blade. More detailed explanation of the importance of this machine, the basic concept of machine, the working principle, machine construction and operation can be found in the article on the paper shredder description. (Read more: description of the paper shredder machine) In this article are described in greater detail about the specifications of the machine and its main components such as the functions of components, the material used, the working principle and position on the machine. The machine specification especially with regard to material and dimensions is obtained based on the calculation and design of machine through the existing formulas in an article on the paper shredder design. (Read more: design of paper shredder machine)


General specifications of the paper shredder machine

Paper shredder machine is driven by electric motors powered 200 Watt, 1 phase, 220 Volt and 1450 rpm. This machine is able to cut the paper in the vertical direction with a width of 5 mm and cut the paper in the horizontal direction with a length of 30 mm, in other words the output of this machine is the size of the shredded paper 30 x 5 mm. Paper specifications are able to be cut by this machine is a sheet of A4 size paper with HVS, a maximum of 80 gms and a maximum of 10 sheets per cycle. Transmission ratio between an electric motor with a shredder blade is 1/96 means maximum rotation reaches 15 rpm shredder blade or cutting the rate of 1,5 m/min (24 mm/s). With these speeds, the machine is able to work at 300 cycles/hour of speed, so that the maximum capacity of this machine is 3000 sheets/hour.

This paper shredder machine consists of three main parts: the machine construction, transmission systems and cutting system with the specifications described below.


Construction of the paper shredder machine

The machine construction is the main part of the paper shredder machine that serves as the base or foundation for other machine components, especially moving parts. Construction machine consists of machine frame, left base, right base, shredder support and gear support. Machine frame is used to support all components of the paper shredder machine. The machine frame is made of steel angle-shaped profile with a size of 25 x 25 x 3 mm which is connected through welding process. The material used for the machine frame is ASTM A36 so that the welding process can use arc welding with electrodes E 6013 specification means having a maximum tensile strength of 60,000 lb/in2 or 42 kg/mm2.
Construction of the paper shredder machine
Left base serves as anchoring the left side of main shaft while the right base serves as anchoring the right side of main shaft, the holder of gear transmission and an electric motor mounting. Left base and right base made of ASTM A36 steel plate with a thickness of 3 mm formed by laser cutting process. Left base and right base mounted on the machine frame by using a standard M4 bolt connection size. On the left base and right base is also fitted deep groove ball bearing code 6000 have reached 10220 hours life time on the reliability factor of 99%. (Read more: ball bearings selection guide). The main shaft will be installed on the both bearing with the aim that the main shaft can rotate stably with a low level of friction.

Shredder support mounted between the left and right base. Shredder support serves to hold the base on top side and the static blade holder. Gear support is mounted on the front of the right base. Gear support serves to hold the transmission gears. Shredder support and support gear is made of ASTM A36 steel plate with a thickness of 2 mm formed by laser cutting and bending processes.


Transmission of the paper shredder machine

The transmission system is one of the main parts of the paper shredder machine that serve to forward rotation or power from the electric motor to the cutting system. Transmission system uses a series of gears with a certain ratio to reduce the rotation (gear reducer). The transmission system consists of helical gears and spur gear. Helical gears serve to forward and reduce direct rotation of the electric motor. Why is selected helical gear? The helical gear is more secure and able to withstand axial and radial force at high speed. (Read more: calculation of helical gear). Helical gear transmission uses gear ratio of 1/6 with 1,5 module and helix angle of 10 degree.
Transmission of the paper shredder machine
The next transmission is spur gears. Why is selected spur gear? Spur gears appropriate for low rotation and high torque. Spur gear transmission on the paper shredder machine is made of two stages with different modules according to the results of calculation. Spur gear transmissions are forward and decrease the rotation of helical gears to the main gear. (Read more: calculation of spur gear) Spur gear 1st stage transmission uses gear ratio of 1/4 with 1,5 module while the spur gear 2nd stage transmission uses gear ratio of 1/4 with 2 module.


Cutting system of the paper shredder machine

Cutting system is one of the main parts of the paper shredder machine that serves as the cutting tool on the vertical and horizontal direction. The system consists of the main shaft, dynamic cutting blades, static cutting blades and main gear. The main shaft serves as the cutting blade holder. The main shaft has a square shape in the position of cutting blade holder and has a round shape at both ends in the position of the holder main bearings and gears. (Read more: shaft calculation). The main shaft is made of VCN 150 or AISI 4340 materials with a minimum diameter of 20 mm.
Cutting system of the paper shredder machine
Dynamic cutting blade is round-shaped blade with 4 (four) the cutting edge, given a square-shaped hole in the middle, mounted on the main shaft and main shaft move together. This blade is used to cut the paper in vertical and horizontal directions. Static cutting blade is square-shaped knife, a hole is round, loosely mounted on the main shaft and the part is not rotating (static). This blade is used to cut the paper in the horizontal direction and is used as a spacer or barrier between the dynamic cutting blades. Cutting blades are designed with tool steel material (HSS-High Speed Steel) with the specification are 112 pieces of blade, 2 mm of blade thickness and 60-degree of cutting angle.

The main gear consists of two spur gears paired with the size (number of teeth and modules) the same. One spur gear mounted on the rear main shaft and direct contact with the transmission spur gears previous. Another spur gear mounted on the front main shaft. The spur gears are drive two main shaft with a rotation in the opposite direction.

That is a description about Specification of Paper Shredder Machine. If you find misconceptions in this post, please provide the correction in the comment box.

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MACHINE INFO Updated at: 21:59

Chicken Plucker Machine by Vertical Retraction System

Chicken Plucker Machine
Chicken Plucker Machine by Vertical Retraction System - Chicken plucker machine is a machine whose function is to pull out the feathers of the chicken skin. This machine is used for conditions of a chicken that has been boiled in hot water first. This machine is designed easy to use and easily removable. Why is this important and necessary as one of the appropriate tech machine? This is one of the questions that will be described at the beginning of this article.

This machine is important because the demand for chicken meat continues to increase every year. These conditions impact on increasing demand for businesses based chicken from a chicken farm, slaughter chickens, broilers seller, chicken restaurants and chicken-based company. On the other hand, people also began to care about the hygiene and quality of the chicken so chicken processing should be supported with adequate facilities and equipment both in terms of efficiency, quantity, quality and technology.

Simply put, the processing of chicken consists of several stages including slaughtering, boiling (inserted into the hot water, in order to easy the process of plucking chickens), plucking chickens and lastly further processing as needed. The processing is very easy and common practice. However, this process would be very inconvenient if we have to process chicken in large quantities. This condition will be experienced by the sellers of chicken, meat distributor who supplies the restaurant and hotel, food companies made chicken and chicken meat traders in the market.

Chicken processing in large quantities will also make it difficult to control the level of hygiene and quality of chicken meat, if processing is done manually. Therefore the use of appropriate technology is needed, especially in the chicken slaughter and plucking chickens. In the current technological developments have been found many type of chicken processing such as the chicken slaughtering machines and the chicken plucker machine. They are using manual, electric motor or the power-assisted automation systems. But in this post will be limited to the chicken plucker machine using an electric motor.

Selection of these topics based on the consideration that the segmentation of chicken meat traders in traditional markets. This type of machine is expected to help plucking a chicken in large quantities at a more effective and efficient than manual chicken plucker. In terms of investment, this machine is much more affordable when compared with chicken plucker machine automatically. But of course, these machines are still able to maintain the quantity, quality and level of hygiene of chicken meat produced.

Many types of chicken plucker machines are often used by the producers of chicken. Based on its principle, there are two systems were used that chicken plucker machine with vertical and horizontal retraction system. In the vertical retraction system, the chicken is rotated on a vertical axis direction inside the drum, while the horizontal retraction system, the chicken is rotated in the direction of the horizontal axis through the spindle. In this post will be limited to the topic of the chicken plucker machine uses vertical retraction system.

The construction of chicken plucker machine

In general, construction of chicken plucker machine and the main parts of the machine can be seen in the image below.
Construction of Chicken Plucker Machine


The concept of vertical retraction system

Basically chicken plucker machine is using the same principles in a way manual or traditional revocation ie chicken that was killed and soaked in hot water and then plucked one by one. The difference if the traditional process, quill removed manually by hand or manual equipment while on this machine quill lifted through the lifting of a system using multiple finger (see machine construction). Finger serves to hold the quill when the revocation process.

The basic concept also resembles the traditional way. The concept is a chicken held by the left hand or using a tool holder while the right hand moves plucking chickens. On this machine chicken feather held by some of the finger is placed in the static part and dynamic part. When the dynamic part is driven and static part remains silent, then the quill held by finger would be interested to release it.

The principle of chicken plucker machine

Chicken plucker machine is a machine designed by using an electric motor. Electric motor drives the dynamic finger mounted on the finger plate at a certain speed. Transmission power from the electric motor to the finger plate is using v-belt transmission. Driver pulley mounted on the electric motor and the driven pulley mounted on the main shaft. Main shaft rotating on a vertical axis direction and moving the finger plate directly. This principle distinguishes between vertical and horizontal retraction system.

Chicken will be processed placed on a finger plate. In the finger plate has been installed dynamic finger made of rubber with a screw shape that serves to bind the chicken feathers. When the finger plate rotates at a certain speed, the chickens will come round and is likely to be thrown into the drum wall due to centrifugal force. Chicken feathers tied in dynamic finger will be regardless of chickens when the chickens thrown into the drum wall. In the drum wall mounted static finger that will bind chicken feathers when chicken thrown into the drum wall. Chickens will fall back to dynamic finger due to gravitational forces. Chicken feathers tied in static finger will be regardless of chickens when the chickens fell into finger plate.

The operation of chicken plucker machine

The operation of the chicken plucker machine easy enough:
  1. Put chicken that has been boiled into the tube
  2. Turn on the electric motor, so that the finger plate (dynamic finger) rotates.
  3. Chicken feathers would come loose and fall to the bottom of the finger plate.
  4. Chicken feathers that have been separated driven by upside down finger out through the output chute
  5. Prepare a container of chicken feathers just below the output chute
  6. Turn off the electric motor, if all the feathers had been removed.
  7. Remove the chickens that have been processed.
That is a description about Chicken Plucker Machine by Vertical Retraction System. If you find misconceptions in this post, please provide the correction in the comment box.

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Posted by MACHINE INFO
MACHINE INFO Updated at: 05:50