Single Shaft Shredder Machine

single shaft shredder machiner is a very important and widely used equipment in the industrial crushing field, known for its strong shear force, stable performance, and wide material adaptability.

 

 

A single shaft shredder machiner is a heavy-duty crushing equipment that reduces the size of materials by shearing, tearing, and squeezing them through the interaction between a moving knife installed on a single rotating spindle and a fixed knife fixed on a knife box.

 

Working principle description:

1. Feeding: The material is fed into the shredder blade box through the feeding system (such as conveyor belt, manual or automatic feeding machine).

2. Gripping and tearing: The spindle rotates at low speed and high torque under the drive of the motor and reducer. The moving knife installed on the spindle (usually arranged in a spiral shape) grabs and pulls the material like a "claw", and pushes it towards the fixed knife.

3. Shear: The narrow gap between the moving blade and the fixed blade creates a shear effect. Under the tremendous mechanical force, the material is forcibly cut and torn apart.

4. Screen filtration: The shredded material falls through the bottom or side screen. Materials with a size larger than the sieve aperture will be grabbed again by the rotating tool and undergo secondary crushing until their size is smaller than the sieve aperture before being discharged.

5. Discharge: The qualified materials after crushing are sieved and sent out by the discharge conveyor belt or directly fall into the collection bin.

 

 

1. Knife shaft system: core components. including:

·Spindle: Made of high-strength alloy steel forging and heat-treated, it has extremely high strength and wear resistance.

·Moving blade: usually rectangular blade, made of special tool steel (such as D2, H13, etc.), with high heat treatment hardness, can be repeatedly sharpened and reused. They are arranged in a spiral pattern on the spindle to ensure smooth cutting and effective material pulling.

·Knife box: A sturdy welded structure used for installing fixed knives and carrying the entire knife shaft system.

·Fixed knife: also made of high-strength tool steel, fixed on the knife box by bolts, and combined with the moving knife to form a cutting pair.

 

2. Power system:

·Motor: Typically, high-power, high torque AC motors or hydraulic motors are used.

·Reducer: Using heavy-duty gear reducers or planetary gear reducers, the high-speed rotation of the motor is converted into low-speed, high torque rotation required by the cutter shaft.

 

3. Frame and machine base: welded from heavy-duty steel plates, providing stable support for the entire machine and absorbing the huge vibrations and stresses generated during operation.

 

4. Sieve: a key component that determines the size of the discharge. Different aperture screens can be replaced according to the requirements of the final product.

 

5. Hydraulic system (optional but common):

·Pusher: In large equipment, a hydraulic driven pusher plate is used to continuously push the material towards the blade shaft, improving production efficiency.

·Maintenance function: Used for automatic reversal (clearing stuck materials) and easy opening of the tool box for tool replacement and maintenance.

 

6. Control system: PLC control system, used to monitor motor current, temperature, pressure and other parameters, achieve automatic control, overload protection and fault diagnosis.

 

 

·High torque, low speed: Provides enormous shear force, can handle hard and tangled materials, while consuming relatively low energy and running smoothly.

·Strong shear force: mainly relies on shear action to break, rather than impact or hammering, so it has low noise and less dust, making it more suitable for handling hard materials such as metals and plastics.

·Controllable discharge size: By replacing screens with different aperture sizes, the size of the discharge can be flexibly controlled to meet the requirements of subsequent processing or recycling.

·Wide adaptability: By adjusting the tool design and mesh, it can handle a variety of materials, from thin plastic films to large metal waste, tires, wood, and more.

·Strong durability: Core components such as spindle and cutting tools are made of high-strength and wear-resistant materials, with a long design life.

 

 

Single shaft shredder machiner is a versatile player in the resource recycling and waste disposal industry.

1. Solid waste treatment: large household waste (sofas, mattresses, trash cans), industrial waste, medical waste (requiring special disinfection and sealing design), RDF (waste derived fuel) preparation.

2. Plastic recycling: shred plastic buckets, containers, pipes, plastic frames, tires, film rolls, etc. to prepare for granulation.

3. Metal recycling: crushing scrap metal, car shells, oil drums, aluminum copper waste, and household appliance shells (WEEE) to reduce volume and facilitate melting.

4. Wood recycling: Processing pallets, building templates, tree branches, and wood scraps for the production of biomass fuel or boards.

5. Paper recycling: crushing paper mill waste, paper roll cores, and confidential documents (destruction of confidential documents).

 

 

Single Shaft Shredder

Number of blade shafts: one rotating spindle+fixed blade

Main principle: cutting (moving knife and fixed knife)

Tearing force: Strong shear force, suitable for hard and brittle materials

Discharge shape: relatively regular, uniform size

Applicable materials: hard and brittle materials (metal, hard plastic, electronic waste)

 

Double axis shredder

Number of blade shafts: Two blade shafts that rotate relative to each other

Main principles: cutting, tearing, pulling (interlocking between blade shafts)

Tearing power: Strong tearing power, suitable for flexible and fibrous materials

Discharge shape: Irregular shape with significant size variation

Applicable materials: flexible, fiber materials (tires, films, fibers, wood)

 

Simple summary of selection principles: Single axis is preferred for handling hard and brittle materials such as metals and hard plastics; Double axis is preferred for handling soft and tough materials such as tires, fibers, and household waste. But in many complex waste disposal lines, the two often work together.

 

 

1. Material characteristics: Clearly specify the type, hardness, size, and composition of the material to be processed.

2. Capacity requirement: Expected hourly processing capacity.

3. Discharge size: The final required size of the crushed material to determine the sieve aperture.

4. Tool material and design: directly related to the service life and maintenance cost of the equipment.

5. Brand and after-sales service: Choose manufacturers with technical strength and good after-sales service to ensure spare parts supply and technical support.

 

Model	WT600	WT800	WT800	WT1000	WT1200	WT1500
Motor:kw	22	37	45	55	75	90
Rotor Speed :rpm	83	83	83	83	83	83
Rotor Diameter:mm	280	400	400	400	400	480
Rotor Blade:pcs	26	38	46	58	74	111
Fixed blade:pcs	1	2	2	2	3	3
Capacity:kg/h	300	600	800	1000	1500	2000

 

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