Product Description

Kowloon replaceable blade planetary gearbox double axle shredder
Kowloon double shaft shredder is sort of industrial waste reduction equipments, widely used to downsize various of materials.
Kowloon has 14 years’ manufacturing experience in recycling machinery, now have exported products to more than 30countries.

Features:
Low speed, high torque rotor, cutting and shearing working principle suitable for both soft and hard materials ;
Blades made of special alloy, different shape, thickness and cutting head quantity providing the optimum solution for different materials.
Siemens, ABB, WEG…etc quality motors are available for different customers’ options
Schneider, Chint, Siements…etc electrical components to ensure steady performance and realize machine 24hours running, also PLC system is optional to enabling automatic reverse for overload protection and minimizing blades damages;
Individual electrical control panel with PLC control system ensure the machine work properly and safety;
Detachable type cutting head on shredder blades, makes the maintenance and replacement of wearing parts easier and much shorten maintenance time.
Low speed, lower noise, workable in workshop and outdoor

Application
1. Landfill material treatment
2. Municipal solid waste incineration in circulating fluidized bed
3. Pyrolysis and gasification of domestic waste
4. Comprehensive separation and resource utilization of domestic waste
5. Cement kiln collaborative disposal material handling
6. Resource recycling material handling
7. Industrial chemical waste treatment
8. Food waste
9. Medical waste
10. Disposal of waste furniture
11. Power plant biomass wastes
Technical Parameter for Two Shaft Shredder

3. Delivery &Shipping for Twin Shaft Shredder
1.Plastic wraps to protect wood shredder, tire shredder from dust, moisture and corrosion.
2. Wooden case for compact machine or wearing parts as the outside package. Or according to the customer requirements.
3.Excellant logistic team to guarantee the shredder machines to be safely shipped to customer warehouse, no extra fee on export or import on custom

4. Kowloon Service

1. Pre-sales: Provide fitted solution and offer to customers, is CZPT to adjust the layout of complete line to fit customers’ working area, also provide technical support 24 hours service online.
2. After sales:
Kowloon skilled technicians are experienced at oversea installation, therefore they are available to assist with onsite installation, commissioning & training on request. Layout drawing, circuit diagram and maintenance manual will be provided together with our products after sales, so that ensure customers have plenty of time to get prepared for installation.
3. Wearing parts support
Kowloon has widely built extensive cooperation with wearing parts partner manufacturers more than 14years, has ability to continuously provide wearing parts and after-sale service to global market.

5. Company Introduction

ZheJiang Kowloon, located in industrial hub of China HangZhou city, is 1 professional manufacturer of various wood crushers and other recycling machinery. We were established since 2006, and it′ S been 14 years since we started exporting. By 2014, Kowloon machines were approved by CE, BV, SGS and ISO certificates. Up to now, we have exported to more than 30 countries and share markets in worldwide, such as Turkey, Spain, Romania, Italy, America, Mexico, Costa Rica, Saudi Arabia, Israel, Libya, Egypt, Uganda, South Africa, Kenya, Venezuela, Ecuador, Peru, Russia, India, Malaysia, Philippines, Indonesia, Australia, etc. Besides, Kowloon has owned 2 oversea distributors and after-sale service center and now are still growing continuously.

ZheJiang Kowloon adopts advanced technology parts, design and craft, united technology from USA, Germany, Japan and Australia, not only suits Chinese market and woods, as well as different materials and countries. Main machines are as follows: Double-shaft shredder, drum wood chipper, multi-functioanl wood chipper, disc wood chipper, heavy-duty sawdust machine, hammer grinder, mobile shredder, mobile wood chipper, mobile sawdust machine, chaff cutter, fiber crusher, wood powder machine, rotary dryer, air-flow dryer, dust collector, cyclone, etc.

Kowloon support team has 4 professional engineers to provide clients professional solutions, facing multitudinous requirements, Kowloon team always pay patience and offer as more options as possible, to ensure every users have all security while running our machines, in this way, Kowloon keep growing and now owns ability of taking large wood processing project, wood sawdust, wood pellet and wood flour production line in China or abroad, under the support of internal business department, Kowloon is CZPT to take “Turn-Key” projects in China or abroad.

Kowloon never stop on improving and researching, in past 19years, 80% traditional products get improved and various of new products were developed based on traditional technology, such mobile type, diesel wood chippers, heavy-duty shredders, wood pallet crusher… etc, more and more machines become popular in Chinese and abroad market, won a good reputation and corporate image, for better meets the worldwide market, Kowloon accept requests to customize machines according to users’ demand, welcome to inquiry us with detailed requirements, all Kowloon people would offer best and all possibility!

6. FAQ for double shaft shredder
You May Have Following Questions:

1: Are You Trading Company or Factory?
 Kowloon Machinery is a Factory with 31 years experience in Machinery Manufacturing,we provide you competive Factory Price and good After-sale Service!

2: What about the Machine Installation?
For a single machine or a simple line, we provide you Foundation Drawing ,Installation Instruction Books or successful installed machinery picture or video; for large machines and complex production line, we could send our engineers to CZPT the installation if necessary

3: How About the Spare Parts?
We offer some free spare parts like belt, gasket etc small parts, for the BLADES, KNIVES, SHAFTS etc important wearing parts, we suggest customers buy some along with the machines to save the shipping cost, and we have enough spares parts in stock.
4: What Will We Do If We Have Problems in Machine Working After We Buy the Machine?
Kowloon has people special for after-sale service,if customers outside China have problems when machine working, just feel free to send us the picture or video to show us, we will give you solutions in 24hours.
5: Could We Visit Your Factory and Test the Machine?
We warmly welcome you to visit our factory anytime, and we are very glad to test our machine with your raw material.

7. Contact Detail: 
Welcome to contact us at any time We will reply you within 24 hours

How to Choose the Right Worm Shaft

You might be curious to know how to choose the right Worm Shaft. In this article, you will learn about worm modules with the same pitch diameter, Double-thread worm gears, and Self-locking worm drive. Once you have chosen the proper Worm Shaft, you will find it easier to use the equipment in your home. There are many advantages to selecting the right Worm Shaft. Read on to learn more.

Concave shape

The concave shape of a worm’s shaft is an important characteristic for the design of a worm gearing. Worm gearings can be found in a wide range of shapes, and the basic profile parameters are available in professional and firm literature. These parameters are used in geometry calculations, and a selection of the right worm gearing for a particular application can be based on these requirements.
The thread profile of a worm is defined by the tangent to the axis of its main cylinder. The teeth are shaped in a straight line with a slightly concave shape along the sides. It resembles a helical gear, and the profile of the worm itself is straight. This type of gearing is often used when the number of teeth is greater than a certain limit.
The geometry of a worm gear depends on the type and manufacturer. In the earliest days, worms were made similar to simple screw threads, and could be chased on a lathe. During this time, the worm was often made with straight-sided tools to produce threads in the acme plane. Later, grinding techniques improved the thread finish and reduced distortions resulting from hardening.
When a worm gearing has multiple teeth, the pitch angle is a key parameter. A greater pitch angle increases efficiency. If you want to increase the pitch angle without increasing the number of teeth, you can replace a worm pair with a different number of thread starts. The helix angle must increase while the center distance remains constant. A higher pitch angle, however, is almost never used for power transmissions.
The minimum number of gear teeth depends on the angle of pressure at zero gearing correction. The diameter of the worm is d1, and is based on a known module value, mx or mn. Generally, larger values of m are assigned to larger modules. And a smaller number of teeth is called a low pitch angle. In case of a low pitch angle, spiral gearing is used. The pitch angle of the worm gear is smaller than 10 degrees.

Multiple-thread worms

Multi-thread worms can be divided into sets of one, two, or 4 threads. The ratio is determined by the number of threads on each set and the number of teeth on the apparatus. The most common worm thread counts are 1,2,4, and 6. To find out how many threads you have, count the start and end of each thread and divide by two. Using this method, you will get the correct thread count every time.
The tangent plane of a worm’s pitch profile changes as the worm moves lengthwise along the thread. The lead angle is greatest at the throat, and decreases on both sides. The curvature radius r” varies proportionally with the worm’s radius, or pitch angle at the considered point. Hence, the worm leads angle, r, is increased with decreased inclination and decreases with increasing inclination.
Multi-thread worms are characterized by a constant leverage between the gear surface and the worm threads. The ratio of worm-tooth surfaces to the worm’s length varies, which enables the wormgear to be adjusted in the same direction. To optimize the gear contact between the worm and gear, the tangent relationship between the 2 surfaces is optimal.
The efficiency of worm gear drives is largely dependent on the helix angle of the worm. Multiple thread worms can improve the efficiency of the worm gear drive by as much as 25 to 50% compared to single-thread worms. Worm gears are made of bronze, which reduces friction and heat on the worm’s teeth. A specialized machine can cut the worm gears for maximum efficiency.

Double-thread worm gears

In many different applications, worm gears are used to drive a worm wheel. These gears are unique in that the worm cannot be reversed by the power applied to the worm wheel. Because of their self-locking properties, they can be used to prevent reversing motion, although this is not a dependable function. Applications for worm gears include hoisting equipment, elevators, chain blocks, fishing reels, and automotive power steering. Because of their compact size, these gears are often used in applications with limited space.
Worm sets typically exhibit more wear than other types of gears, and this means that they require more limited contact patterns in new parts. Worm wheel teeth are concave, making it difficult to measure tooth thickness with pins, balls, and gear tooth calipers. To measure tooth thickness, however, you can measure backlash, a measurement of the spacing between teeth in a gear. Backlash can vary from 1 worm gear to another, so it is important to check the backlash at several points. If the backlash is different in 2 places, this indicates that the teeth may have different spacing.
Single-thread worm gears provide high speed reduction but lower efficiency. A multi-thread worm gear can provide high efficiency and high speed, but this comes with a trade-off in terms of horsepower. However, there are many other applications for worm gears. In addition to heavy-duty applications, they are often used in light-duty gearboxes for a variety of functions. When used in conjunction with double-thread worms, they allow for a substantial speed reduction in 1 step.
Stainless-steel worm gears can be used in damp environments. The worm gear is not susceptible to rust and is ideal for wet and damp environments. The worm wheel’s smooth surfaces make cleaning them easy. However, they do require lubricants. The most common lubricant for worm gears is mineral oil. This lubricant is designed to protect the worm drive.

Self-locking worm drive

A self-locking worm drive prevents the platform from moving backward when the motor stops. A dynamic self-locking worm drive is also possible but does not include a holding brake. This type of self-locking worm drive is not susceptible to vibrations, but may rattle if released. In addition, it may require an additional brake to keep the platform from moving. A positive brake may be necessary for safety.
A self-locking worm drive does not allow for the interchangeability of the driven and driving gears. This is unlike spur gear trains that allow both to interchange positions. In a self-locking worm drive, the driving gear is always engaged and the driven gear remains stationary. The drive mechanism locks automatically when the worm is operated in the wrong manner. Several sources of information on self-locking worm gears include the Machinery’s Handbook.
A self-locking worm drive is not difficult to build and has a great mechanical advantage. In fact, the output of a self-locking worm drive cannot be backdriven by the input shaft. DIYers can build a self-locking worm drive by modifying threaded rods and off-the-shelf gears. However, it is easier to make a ratchet and pawl mechanism, and is significantly less expensive. However, it is important to understand that you can only drive 1 worm at a time.
Another advantage of a self-locking worm drive is the fact that it is not possible to interchange the input and output shafts. This is a major benefit of using such a mechanism, as you can achieve high gear reduction without increasing the size of the gear box. If you’re thinking about buying a self-locking worm gear for a specific application, consider the following tips to make the right choice.
An enveloping worm gear set is best for applications requiring high accuracy and efficiency, and minimum backlash. Its teeth are shaped differently, and the worm’s threads are modified to increase surface contact. They are more expensive to manufacture than their single-start counterparts, but this type is best for applications where accuracy is crucial. The worm drive is also a great option for heavy trucks because of their large size and high-torque capacity.