Single rotor fine shredder(Single shaft fine crusher) is an efficient solid waste treatment equipment designed for fine material crushing. It is widely used in plastic recycling, electronic waste treatment, domestic waste resource utilization, RDF fuel preparation, biomass energy pretreatment and other industries. The equipment achieves efficient crushing of various soft and medium hardness solid wastes through the relative shearing effect between the high-speed single-axis rotating knife roller and the fixed knife, ensuring that the discharge particle size is consistent and controllable, meeting the subsequent melt granulation, packaging or combustion process requirements.

The core structure of the single-axis fine shredder includes a high-strength knife shaft, replaceable moving knife and fixed knife, screen system, hydraulic feeding system, motor and intelligent control system. Its knife shaft is usually forged with high-quality alloy steel, and the moving knife adopts an adjustable modular installation structure, which is wear-resistant and easy to maintain; the fixed knife is installed inside the frame, which can effectively assist shearing, extend the cutting path, and improve crushing efficiency. The screen is located at the bottom of the crushing chamber to control the discharge particle size. Different aperture sizes can be selected according to the material characteristics to ensure uniform particle size.

During operation, the material is pushed into the crushing chamber by the hydraulic system, sheared by the high-speed rotating knife shaft, and discharged through the screen. The particle size can be controlled between 10-80mm. The whole machine is equipped with a PLC intelligent control system, which can realize the functions of start-up, shutdown, overload protection, automatic reversal, anti-blocking, etc., and the operation is safe and stable. Some high-end models also support remote control and linkage conveying system, which is convenient for integrated operation with the whole line.

Compared with traditional coarse shredders, single rotor fine shredder has the advantages of finer processing particle size, lower energy consumption, lower noise and stronger adaptability. It is suitable for a variety of wastes such as plastic films, hollow containers, woven bags, cables, circuit boards, cloth, rubber, leather, wood, etc., especially for process links that require particle size control or enter the next step of fine processing (such as granulation, melting, combustion).

As one of the key equipment in modern solid waste treatment systems, single-axis fine shredder plays an important role in resource recycling and environmental protection. Its high efficiency, low maintenance cost and modular design make it an ideal choice for industrial solid waste volume reduction and pretreatment.

The working principle of the single rotor fine shredder(Single shaft fine crusher) is based on the "low speed and high torque" shearing and crushing method. Through a single high-strength blade shaft and a matching fixed blade and screen system, the material is efficiently and finely shredded. This equipment is widely used for pretreatment and fine crushing of plastic products, electronic waste, rubber products, cloth, wood, domestic waste and other solid waste materials.

Its core structure is a rotating blade shaft with a replaceable moving blade. The blade shaft is usually forged with high-quality alloy steel and has a strong torque bearing capacity. The moving blade is installed on the blade shaft in a certain arrangement and forms a shearing zone with the fixed blade installed on the inner wall of the casing. When the equipment is started, the motor drives the blade shaft to rotate at a low speed and high torque. The material is pressed into the shearing zone under the action of the hydraulic pushing system. A strong shearing force is formed between the moving blade and the fixed blade, tearing, cutting and crushing the material into smaller sizes.

During the shearing process, the crushed material is screened through the bottom screen. Only when the particle size meets the screen aperture requirements, the material will be discharged through the screen; particles that do not meet the requirements will continue to be sheared repeatedly in the crushing chamber until they reach the set size. This cyclic crushing mechanism ensures the uniformity and stability of the discharge particle size. The screen aperture can be replaced or customized according to different process requirements (generally 10-100mm), so as to achieve strict control of the discharge accuracy.

The equipment is usually equipped with an intelligent PLC control system to achieve automatic control and fault protection functions. When encountering large-volume or hard foreign objects, the system will automatically identify the current load and trigger the reversal function to avoid overloading the knife shaft or damage to the equipment. At the same time, the thrust and feed speed of the hydraulic push system can also be adjusted to adapt to materials of different densities and strengths, improving the overall crushing efficiency and discharge consistency.

The single-shaft fine shredder has the characteristics of compact structure, low operating noise, convenient maintenance and low energy consumption. Due to the modular design, the replacement of the moving knife and the fixed knife is simple and quick, and the maintenance cycle is long, which greatly improves the continuity of production and the service life of the equipment.

The working principle of single rotor fine(Single shaft fine crusher)shredder is to achieve efficient, controllable and continuous fine crushing of solid waste through the high-torque shearing cooperation of a single high-strength rotating blade shaft and a fixed blade, providing ideal particle size conditions for subsequent recycling, melting, compression or combustion processes. It is an indispensable core equipment in modern resource processing systems.

As a solid waste treatment equipment focusing on fine crushing, Single rotor fine shredder has many advanced performances and significant advantages. It is widely used in plastic recycling, electronic waste treatment, rubber product processing, biomass energy pretreatment, domestic waste volume reduction, RDF fuel preparation and other fields. The following is a summary of its main features and core advantages:

1. Compact structure and reasonable design

The single-axis fine shredder adopts a modular design, compact structure, small footprint, and is easy to install and integrate with the whole line. The core component of the host-the knife shaft is made of high-strength alloy steel, combined with a high-precision moving knife seat and fixed knife system to ensure high shear force and long-term stable operation.

2. High crushing accuracy and uniform discharge

The equipment controls the discharge size through the screen, and the particle size can generally be adjusted between 10-100mm. The crushing particle size is consistent, fine, and the molding effect is good. The screen aperture can be changed according to different materials and application requirements to meet the particle size requirements of subsequent processes such as granulation, compression, and combustion.

3. The movable knife is replaceable and easy to maintain

The movable knife adopts a bolt-fixed structure and a modular design of the knife. It can be replaced separately after wear, which greatly reduces maintenance costs and downtime. The knife materials are mostly high-strength wear-resistant steels such as SKD-11, D2 or Cr12MoV, with a long service life.

4. Stable operation and low energy consumption

The equipment adopts a low-speed and high-torque design, which can effectively reduce energy consumption and noise, while avoiding dust and high temperature problems in traditional high-speed equipment. Even under continuous operation conditions, it still maintains stable output and low failure rate.

5. Intelligent control system, safe operation

Equipped with PLC+touch screen control system, it realizes intelligent monitoring, automatic start and stop, fault alarm, overload reversal and other functions, and improves the convenience and safety of operation. Some high-end models support network remote monitoring, which is convenient for centralized control and intelligent management.

6. Strong material adaptability

Applicable to a variety of material types, including but not limited to plastic hollow containers, films, head materials, broken blocks, cloth, leather, rubber, cables, circuit boards, wood, foam and other soft and medium-hard solid waste.

7. The hydraulic pusher system is efficient and stable

The pusher mechanism driven by high-efficiency hydraulic drive is used to ensure uniform feeding and continuous shearing of materials, avoid idling and material accumulation, and improve crushing efficiency and stability.

8. Strong scalability and easy linkage of the whole line

It can be flexibly combined with belt conveyors, iron removers, air separation equipment, granulators and other equipment to build a fully automated crushing and recycling production line to improve overall efficiency and resource utilization.

Single rotor fine shredder has excellent performance in the field of fine treatment of solid waste with its excellent crushing capacity, flexible configuration options, reliable structure and intelligent control system. It not only improves processing efficiency and product quality, but also effectively reduces operating costs and environmental risks. It is an ideal solution for various industrial recycling and resource utilization projects.

>1. What is the difference between a single-shaft fine shredder and an ordinary single-shaft shredder?

The main differences between a single-shaft fine shredder and an ordinary single-shaft shredder are in the crushing particle size and blade design. Ordinary single-shaft shredders mainly crush materials into relatively large particles, which are suitable for scenes where the material crushing accuracy is not high. The single-shaft fine shredder focuses on crushing materials into finer particles, which can meet some industries with fine requirements for material particle size, such as fine chemicals, high-end plastic recycling, etc. In terms of blade design, the blades of the single-shaft fine shredder are denser and more finely arranged, and the blade shape and angle are specially optimized to enhance the shearing and grinding effect on the material, thereby achieving a finer crushing effect. For example, when recycling plastic film, an ordinary single-shaft shredder may crush it into pieces of several centimeters in size, while a single-shaft fine shredder can crush it into fine particles of millimeters.

>2. What industries are single-shaft fine shredders suitable for?

Single-shaft fine shredders are widely used in many industries. In the plastic recycling industry, it can crush waste plastic products such as plastic bottles and plastic bags into fine particles, which is convenient for subsequent recycling, granulation and processing. In the field of rubber processing, it can crush waste tires, rubber scraps, etc. to provide raw materials for the reproduction of rubber products. In the wood processing industry, it can process wood waste, wood chips, etc., and crush them into finer fibrous materials for the production of artificial boards, papermaking, etc. In addition, in industries such as electronic waste treatment and biomass energy, single-axis fine shredders can also play an important role in crushing related materials for subsequent separation, extraction or conversion.

>3. What are the options for the blade material of the single-axis fine shredder?

There are many options for the blade material of the single-axis fine shredder, and the common ones are high manganese steel, alloy tool steel and cemented carbide. High manganese steel has good toughness and wear resistance. When it is impacted, the surface will harden rapidly. It is suitable for processing some materials with high hardness and certain toughness, such as scrap metal scraps. Alloy tool steel has high hardness and wear resistance, as well as certain strength and toughness. It can meet the fine crushing needs of most conventional materials, and the cost is relatively moderate. Cemented carbide has extremely high hardness and wear resistance, but relatively poor toughness and high price. It is usually used to process particularly hard and wear-resistant materials, such as some high-strength engineering plastics, ceramic fragments, etc., which can effectively extend the service life of the blade.

>4. How to adjust the crushing particle size of the single-axis fine shredder?

Adjusting the crushing particle size of the single-axis fine shredder can be achieved in many ways. One is to replace the screen of different specifications. The aperture size of the screen directly determines the particle size of the material after crushing. The smaller the aperture, the finer the material particles passing through. The second is to adjust the spacing and arrangement of the blades. Reducing the spacing between the blades can make the material more fully sheared and ground, thereby obtaining a finer crushing product. The third is to control the rotation speed of the knife shaft. Appropriately reducing the rotation speed can increase the residence time of the material in the shredding chamber, so that the material can be crushed more finely. For example, when the material needs to be crushed into finer particles, the screen with a smaller aperture can be replaced, and the blade spacing and the blade shaft speed can be adjusted appropriately.

>5. What are the maintenance points of the single-shaft fine shredder?

The maintenance of the single-shaft fine shredder is very important. In daily use, the wear of the blade should be checked regularly. If the blade is found to be severely worn, it should be replaced in time to ensure the crushing effect and the normal operation of the equipment. Clean the residual materials inside the equipment regularly to prevent the accumulation of materials from affecting the performance and life of the equipment. Check the lubrication of the blade shaft, bearings and other parts, add an appropriate amount of lubricating oil to reduce the friction and wear between the parts. At the same time, check the electrical system of the equipment to ensure that the wires are firmly connected and there are no safety hazards such as damage and leakage. For example, clean the equipment once a week, check the blade wear and lubrication once a month, and check and maintain the electrical system once a quarter.

>6. What should I do if the single-shaft fine shredder is blocked during operation?

When the single-shaft fine shredder is blocked during operation, the equipment should be stopped immediately, the power supply should be cut off, and the operation should be safe. Then, open the equipment box, check the blocked part, and analyze the cause of the blockage. Common reasons may be too much material, too much material humidity, or foreign matter that is difficult to crush in the material. For blockage caused by too much material, it is necessary to clean out the excess material and adjust the subsequent feeding speed. If the material humidity is too high, the material can be dried before being put into use. If there is a blockage caused by foreign matter, the foreign matter should be carefully removed and the internal equipment should be checked for damage. After cleaning and inspection, restart the equipment and observe the operation.

>7. What is the energy consumption of the single-shaft fine shredder?

The energy consumption of the single-shaft fine shredder is affected by many factors. Equipment power is one of the main factors affecting energy consumption. The greater the power, the higher the energy consumption. The hardness, toughness and humidity of the material will also affect the energy consumption. When processing hard, tough or high-humidity materials, the equipment needs to consume more energy to crush the material. In addition, operating parameters such as the blade speed and feed speed will also affect energy consumption. Generally speaking, reasonable adjustment of operating parameters, such as appropriately reducing the blade speed and controlling the feed speed to be uniform, can reduce energy consumption. For example, when processing the same material, the energy consumption of the single-shaft fine shredder can be reduced by 10% - 20% by optimizing the operating parameters.

>8. What are the sources of noise from the single-shaft fine shredder and how to solve it?

The noise of the single-shaft fine shredder mainly comes from the rotation of the knife shaft, the collision of the blade and the material, and the vibration of the equipment. When the knife shaft rotates, the friction between the components will generate noise; when the blade cuts the material at high speed, it will generate strong impact and vibration noise; the overall vibration of the equipment will also transmit noise through the ground and air. To solve the noise>, a shock absorber can be installed on the base of the equipment to reduce the noise generated by the vibration of the equipment. Soundproof the box, such as adding sound insulation materials, to reduce noise transmission. Regularly maintain the equipment to ensure that all components run smoothly and reduce the noise caused by wear or looseness of components. For example, installing a rubber shock-absorbing pad at the bottom of the equipment and sticking sound-absorbing cotton on the inner wall of the box can effectively reduce the noise level.

>9. How to choose a suitable single-shaft fine shredder manufacturer?

Choosing a suitable single-shaft fine shredder manufacturer requires comprehensive consideration of many factors. First of all, we need to examine the production scale and strength of the manufacturer. Manufacturers with larger scale and stronger strength are usually more secure in technology research and development, production equipment and quality control. Secondly, understand the product quality and performance of the manufacturer, which can be evaluated by checking the manufacturer's product test report, user cases, etc. Furthermore, pay attention to the manufacturer's after-sales service. Good after-sales service can promptly solve the problems that occur during the use of the equipment, including equipment installation and commissioning, operation training, maintenance and repair, etc. In addition, price is also one of the considerations, but you can't just pursue low prices, you must consider the cost performance comprehensively. For example, choose a manufacturer with many years of production experience, a good reputation in the industry, and a complete after-sales service system.

>10. What is the market development trend of single-axis fine shredders?

With the enhancement of environmental awareness and the continuous development of the resource recycling industry, the market prospects of single-axis fine shredders are broad. In the future, single-axis fine shredders will develop in the direction of high efficiency, energy saving and intelligence. In terms of high efficiency, by optimizing the equipment structure and blade design, the crushing efficiency can be improved and the crushing time can be shortened. In terms of energy saving, new energy-saving technologies and materials are used to reduce equipment energy consumption. In terms of intelligence, it is equipped with advanced control systems to realize automatic operation and remote control of the equipment.