An energy-saving crushing feeder for polymer materials

Abstract

The present invention relates to the technical field of feeders, and discloses an energy-saving crushing feeder for polymer materials, comprising a crushing box, a feed hopper provided on the upper side of the crushing box, a discharge pipe fixedly mounted on the side of the crushing box, a central shaft rotatably mounted inside the crushing box, a servo motor fixedly mounted on the surface of the crushing box for driving the central shaft to rotate, a cutting blade and a rotating disk fixedly mounted on the surface of the central shaft, a pushing assembly mounted on the upper side of the crushing box, and particulate material stored in the pushing assembly. The crushing feeder proposed by the present invention utilizes the pushing assembly to eject material particles from the upper side of the feed hopper. Under the impact force of the material particles, "lighter materials" are quickly and continuously fed into the crushing box. Compared with feeding in bundles, this can avoid jamming caused by crushing and cutting. Compared with feeding with air blast, this can reduce the wind pressure in the equipment, reduce the spillage of materials and dust, and has a more energy-saving forced feeding function.

Description

Technical Field

[0001] The invention relates to the technical field of feeders, in particular to an energy-saving crushing feeder for polymer materials. Background Art

[0002] During the recycling and processing of waste polymer materials, a crushing device is required for crushing. In order to solve the feeding problem, the prior art has a patent document with the announcement number CN104354244B, which discloses a forced feeding mechanism and a forced feeding method of a plastic crusher, wherein the forced feeding mechanism includes a feed hopper and a discharging mechanism, and the discharging mechanism includes a discharging rotor and a driving mechanism for driving the discharging rotor to rotate; wherein the discharging rotor is arranged in the feed hopper and is located above the movable knife, and the cross-section of the discharging rotor is non-uniform, and is composed of a distal part, a proximal part and a transition part connecting the distal part and the proximal part; the space between the discharging rotor and the movable knife constitutes a crushing front chamber for conveying the plastic to be crushed, and the space between the movable knife, two fixed knives and the screen constitutes a crushing chamber.

[0003] The above-mentioned forced feeding equipment is suitable for feeding materials with a certain weight. In actual use, many materials similar to films (such as plastic films, plastic bags, etc.) are fluffy and light. If the materials are fed together in bundles, it is easy to cause blockage. If the materials are fed after being unbundled, the light materials are not easy to enter the equipment, and the processing efficiency is low. If the materials are pushed by blowing, the crushed materials and dust are easy to fly out, polluting the environment. Based on this, the existing feeding mechanism has the problem of being inconvenient to continuously feed lighter materials, which brings many inconveniences to use. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantage of the existing feeding mechanism in the prior art that it is inconvenient to continuously feed lighter materials, and to propose an energy-saving crushing feeder for polymer materials.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: an energy-saving crushing feeder for polymer materials, comprising a crushing box, a feed hopper is provided on the upper side of the crushing box, a discharge pipe is fixedly installed on the side of the crushing box, a central shaft is rotatably installed inside the crushing box, a servo motor for driving the central shaft to rotate is fixedly installed on the surface of the crushing box, a cutting blade and a rotating disk are fixedly installed on the surface of the central shaft, the rotating disk divides the inner cavity of the crushing box into an upper chamber and a lower chamber, the cutting blade is arranged in the upper chamber of the crushing box, and the discharge pipe is connected to the upper chamber located on the upper side of the rotating disk.

[0006] A pushing assembly is installed on the upper side of the crushing box, and the pushing assembly includes a storage bin fixedly installed on the upper side of the crushing box, a guide pipe is fixedly installed on the bottom of the storage bin, and the guide pipe extends downward into the feed hopper, and an electromagnetic control valve for controlling the opening and closing of the guide pipe is installed at the bottom of the storage bin, and an air supply pipe is installed inside the guide pipe, and the air outlet end of the air supply pipe opens toward the lower end of the guide pipe. Granular material is stored in the storage bin, and when the air supply pipe exhausts downward, the granular material is transported to the crushing box, and the pushing assembly is used to spray material particles on the upper side of the feed hopper. Under the impact force of the material particles, lighter materials are quickly and continuously entered into the crushing box, thereby realizing the function of automatic feeding.

[0007] Preferably, a plurality of filter holes are provided on the surface of the rotating disk, the aperture of the filter holes is larger than the particle size of the particulate material, the upper chamber and the lower chamber are connected through the filter holes, the bottom end of the central axis extends to the lower side of the rotating disk, and a hexagonal shaft is fixedly installed, and a wind fan blade is slidably installed on the surface of the hexagonal shaft, and a support spring is provided on the surface of the hexagonal shaft to press the wind fan blade upward, and the wind fan blade pushes the airflow from bottom to top into the filter holes, and the downward flow rate of the material particles through the filter holes can be adjusted.

[0008] Preferably, a temporary storage cylinder is fixedly mounted on the upper surface of the rotating disk, a mesh cover is fixedly mounted on the upper end of the temporary storage cylinder, a lifting disk is slidably mounted inside the temporary storage cylinder, the lifting disk is slidably sleeved on the surface of the central axis, a connecting rod is fixedly mounted on the lower surface of the lifting disk, the connecting rod slides through the rotating disk, and the bottom end of the connecting rod is fixedly connected to the upper surface of the wind fan blade, and a number of discharge ports are opened around the temporary storage cylinder.

[0009] A driven mesh plate is fixedly installed on the surface of the temporary storage cylinder, and the driven mesh plate has a conical structure. A plurality of crushing blades are fixedly installed on the inner wall of the crushing box. The plurality of crushing blades are in sliding contact with the lower surface of the driven mesh plate, and the crushing blades crush and cut the material.

[0010] Preferably, a feeding window is provided on the upper surface of the crushing box, and the feed hopper is connected to the upper chamber of the crushing box through the feeding window. Two fixed blades are fixedly installed on the inner top wall of the crushing box, and the two fixed blades are respectively arranged on both sides of the feeding window. The cutting blade is in sliding contact with the lower surface of the fixed blade, and a shearing action is formed between the cutting blade and the fixed blade to cut off longer materials and prevent the materials from being entangled on the cutting blade.

[0011] Preferably, a pushing fence is fixedly installed on the upper surface of the rotating disk, and the outer surface of the pushing fence is in sliding contact with the inner wall of the crushing box. A gate is slidably inserted inside the discharge pipe. When the gate is opened, the material in the crushing box can be discharged from the discharge pipe.

[0012] Preferably, a ventilation valve is fixedly installed on the surface of the crushing box, and the lower chamber of the crushing box is connected to the external space through the ventilation valve. The bottom of the lower chamber of the crushing box is a conical structure, and a recovery pipe is fixedly installed on the bottom of the crushing box. The material of the granular material is the same as the material to be fed into the feed hopper. When the device is used to feed the plastic granulator, the plastic granules produced by the granulator can be added to the storage bin for use.

[0013] The present invention has the following beneficial effects:

[0014] 1. The crushing feeder proposed in the present invention uses a pusher assembly on the upper side of the feed hopper to eject material particles. Under the impact force of the material particles, the "lighter material" enters the crushing box quickly and continuously. Compared with feeding in bundles, it can avoid jamming caused by crushing and cutting. Compared with feeding with air blast, it can reduce the wind pressure in the equipment and reduce the overflow of materials and dust, thus having a more energy-saving forced feeding function.

[0015] 2. The crushing feeder proposed in the present invention has the function of cutting off longer materials by providing a cutting blade. By providing a driven mesh plate and a crushing blade, the material falls onto the upper side of the driven mesh plate and rotates with the driven mesh plate. The material particles ejected downward by the pushing assembly cause the material to extend to the lower side of the driven mesh plate. The material is chopped by the crushing blade, thereby achieving coordination between the feeding and crushing speeds. The servo motor only needs to maintain normal speed operation, and the working efficiency of the crushing process can be adjusted by changing the injection flow rate of the pushing assembly. This design reduces the energy consumption required for the servo motor to change speed, and is more energy-efficient.

[0016] 3. The crushing feeder proposed in the present invention is provided with a rotating disk and wind fan blades on the lower side of the rotating disk. The crushed material is on the upper side of the rotating disk. The rotating disk provides centrifugal force for the material, so that the material accumulates around the inner cavity of the crushing box, making room for the lower side of the crushing blade to facilitate material dropping. The wind fan blades drive the airflow to flow upward from the filter hole. The faster the rotation speed of the wind fan blades, the greater the wind speed in the filter hole, and the slower the downward flow rate of the material particles through the filter hole. A large number of material particles are on the upper side of the rotating disk, which is conducive to pushing the crushed material to accumulate around by the material particles. This design only needs to adjust the rotation speed of the servo motor to adjust the rate at which the material particles fall through the filter hole and control the speed at which the crushed material accumulates around.

[0017] 4. The crushing feeder proposed by the present invention increases the speed of the servo motor when discharging is required, and the centrifugal force of the rotating disk is increased, which is conducive to the discharge of materials from the discharge pipe; by arranging a temporary storage tube on the upper side of the rotating disk, the material particles ejected downward by the pushing component enter the temporary storage tube after rebounding, and the wind fan blades rotate at high speed. The wind resistance presses down the wind fan blades, driving the lifting plate to move downward, and the discharge port is opened. A large amount of material particles are ejected from the discharge port to the surroundings, and the material on the upper side of the rotating disk is forced out by impact, which has the function of forced discharge and feeding other equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the three-dimensional structure of the crushing feeder proposed by the present invention Figure 1 ;

[0019] Figure 2 Schematic diagram of the three-dimensional structure of the crushing feeder proposed by the present invention Figure 2 ;

[0020] Figure 3 Schematic diagram of the three-dimensional structure of the crushing feeder proposed by the present invention Figure 3 ;

[0021] Figure 4 for Figure 1 A schematic diagram of the structure enlargement at point A;

[0022] Figure 5 This is a schematic diagram of the explosion structure of the crushing feeder proposed in the present invention;

[0023] Figure 6 This is a schematic diagram of the partially cutaway three-dimensional structure of the rotating disk proposed in the present invention;

[0024] Figure 7 This is a schematic diagram of the front cross-section structure of the crushing feeder proposed in the present invention.

[0025] In the figure: 1. Crushing box; 2. Feed hopper; 3. Discharge pipe; 4. Center shaft; 5. Servo motor; 6. Rotating disk; 7. Storage bin; 8. Diversion pipe; 9. Solenoid control valve; 10. Air supply pipe; 11. Filter hole; 12. Hexagonal shaft; 13. Wind fan blade; 14. Support spring; 15. Temporary storage cylinder; 16. Lifting plate; 17. Connecting rod; 18. Discharge port; 19. Driven mesh plate; 20. Crushing blade; 21. Fixed blade; 22. Push fence; 23. Gate; 24. Ventilation valve; 25. Recovery pipe; 26. Cutting blade. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Reference Figure 1-Figure 7 , an energy-saving crushing feeder for polymer materials, including a crushing box 1, a feed hopper 2 is provided on the upper side of the crushing box 1, a discharge pipe 3 is fixedly installed on the side of the crushing box 1, a central shaft 4 is rotatably installed inside the crushing box 1, a servo motor 5 is fixedly installed on the surface of the crushing box 1, and the servo motor 5 drives the central shaft 4 to rotate through a belt drive. A cutting blade 26 and a rotating disk 6 are fixedly installed on the surface of the central shaft 4, and the rotating disk 6 divides the inner cavity of the crushing box 1 into an upper chamber and a lower chamber. The cutting blade 26 is arranged in the upper chamber of the crushing box 1, the discharge pipe 3 is connected to the upper chamber located on the upper side of the rotating disk 6, the bottom of the lower chamber of the crushing box 1 is a conical structure, and a recovery pipe 25 is fixedly installed at the bottom of the crushing box 1.

[0028] Among them, reference Figure 2 A push fence 22 is fixedly mounted on the upper surface of the rotating disk 6 , the outer surface of the push fence 22 is in sliding contact with the inner wall of the crushing box 1 , and a gate 23 is slidably inserted into the interior of the discharge pipe 3 .

[0029] A pusher assembly is installed on the upper side of the crushing box 1. The pusher assembly includes a storage bin 7 fixedly installed on the upper side of the crushing box 1. A guide pipe 8 is fixedly installed at the bottom of the storage bin 7. The guide pipe 8 extends downward into the feed hopper 2. An electromagnetic control valve 9 for controlling the opening and closing of the guide pipe 8 is installed at the bottom of the storage bin 7. An air supply pipe 10 is installed inside the guide pipe 8. The air outlet end of the air supply pipe 10 opens toward the lower end of the guide pipe 8. See Figure 4 The air compressor is connected to the air supply pipe 10 through a pipeline and injects high-pressure air into the air supply pipe 10.

[0030] During use, granular material is stored in the storage bin 7. By adjusting the electromagnetic control valve 9, the speed at which the granular material in the storage bin 7 enters the guide tube 8 is controlled. When the air supply pipe 10 exhausts downward, the high-pressure air discharged from the air supply pipe 10 provides kinetic energy for the particles in the guide tube 8, and transports the granular material downward from the feed hopper 2 to the crushing box 1. It should be noted that the material of the granular material is the same as that of the material to be delivered in the feed hopper 2, wherein the material particles are granular with similar particle size, and the material to be delivered in the feed hopper 2 is a film-like material.

[0031] A plurality of filter holes 11 are provided on the surface of the rotating disk 6 . The diameter of the filter holes 11 is larger than the particle diameter of the granular material. The upper chamber and the lower chamber are connected through the filter holes 11 .

[0032] In this embodiment, Figure 5As shown, the bottom end of the central shaft 4 extends to the lower side of the rotating disk 6 and is fixedly installed with a hexagonal shaft 12. The surface of the hexagonal shaft 12 is slidably installed with a wind fan blade 13. The surface of the hexagonal shaft 12 is provided with a support spring 14 that presses the wind fan blade 13 upward. When the speed of the wind fan blade 13 is large enough, the force of the wind resistance presses the wind fan blade 13 downward, and the support spring 14 is compressed, causing the wind fan blade 13 to move downward along the hexagonal shaft 12.

[0033] In this embodiment, Figure 6 As shown, a temporary storage tube 15 is fixedly mounted on the upper surface of the rotating disk 6, a mesh cover is fixedly mounted on the upper end of the temporary storage tube 15, a lifting disk 16 is slidably mounted inside the temporary storage tube 15, the lifting disk 16 is slidably sleeved on the surface of the central axis 4, a connecting rod 17 is fixedly mounted on the lower surface of the lifting disk 16, the connecting rod 17 slides through the rotating disk 6, and the bottom end of the connecting rod 17 is fixedly connected to the upper surface of the wind fan blade 13, and a number of discharge ports 18 are opened around the temporary storage tube 15.

[0034] The surface of the temporary storage cylinder 15 is fixedly mounted with a driven mesh plate 19, which is a conical structure. The inner wall of the crushing box 1 is fixedly mounted with a plurality of crushing blades 20, which are in sliding contact with the lower surface of the driven mesh plate 19. The crushing blades 20 rotate to cut the material extending to the lower side of the driven mesh plate 19. Figure 5 .

[0035] Among them, a feeding window is opened on the upper surface of the crushing box 1, and the feed hopper 2 is connected to the upper chamber of the crushing box 1 through the feeding window. Two fixed blades 21 are fixedly installed on the inner top wall of the crushing box 1. The two fixed blades 21 are respectively arranged on both sides of the feeding window, and the cutting blade 26 is in sliding contact with the lower surface of the fixed blade 21.

[0036] A ventilation valve 24 is fixedly installed on the surface of the crushing box 1. The lower chamber of the crushing box 1 is connected to the external space through the ventilation valve 24. The opening and closing size of the ventilation valve 24 is adjusted to control the amount of external air entering the lower chamber of the crushing box 1.

[0037] Working principle: Figure 7 As shown, materials such as plastic films and plastic bags are put into the feed hopper 2, and the guide pipe 8 ejects material particles. The high-speed ejected material particles impact the surface of the plastic films and plastic bags and other materials, pushing these materials into the crushing box 1. At this time, the servo motor 5 starts to drive the central shaft 4 to rotate, and the cutting blade 26 cuts off the longer materials, and then the materials fall to the upper side of the driven mesh plate 19. As the driven mesh plate 19 rotates, the material particles ejected downward by the pushing assembly cause the materials to extend to the lower side of the driven mesh plate 19. The materials are chopped by the crushing blades 20, and the smaller material pieces fall to the upper side of the rotating disk 6. Since the rotating disk 6 is in a rotating state, the rotating disk 6 provides centrifugal force for the materials, causing the materials to accumulate around the inner cavity of the crushing box 1.

[0038] Part of the material particles fall into the temporary storage cylinder 15, and part of them pass through the filter holes 11 and fall into the lower side of the rotating disk 6, and then accumulate in the recovery pipe 25, which is convenient for subsequent discharge and recycling.

[0039] When discharging is required, the gate 23 is slid open to increase the speed of the servo motor 5. At this time, the speed of the wind fan blades 13 increases, and the wind resistance increases. The wind resistance exerts downward pressure on the wind fan blades 13, causing the wind fan blades 13 to move downward, driving the lifting plate 16 to move downward, and the discharge port 18 is opened. The material particles in the temporary storage tube 15 are ejected to the surroundings from the discharge port 18 under the action of centrifugal force. Under the centrifugal force of the rotating disk 6 and the impact of the material particles, the crushed material on the upper side of the rotating disk 6 is discharged from the discharge pipe 3.

[0040] The crushing feeder proposed in the present invention has the function of cutting off longer materials by providing a cutting blade 26. By providing a driven mesh plate 19 and a crushing blade 20, the material falls onto the upper side of the driven mesh plate 19 and rotates with the driven mesh plate 19. The material particles ejected downward by the pushing assembly cause the material to extend to the lower side of the driven mesh plate 19. The material is chopped by the crushing blade 20, thereby achieving coordination between the feeding and crushing speeds. During the crushing process, it is only necessary for the servo motor 5 to maintain normal speed operation. By changing the injection flow rate of the pushing assembly, the working efficiency of the crushing process can be adjusted. The servo motor 5 does not need to run at high speed for a long time. This design reduces the energy consumption of the servo motor 5 required to change speed, and is more energy-efficient.

[0041] By setting a rotating disk 6 and setting wind fan blades 13 on the lower side of the rotating disk 6, the crushed material is on the upper side of the rotating disk 6. The rotating disk 6 provides centrifugal force for the material, so that the material accumulates around the inner cavity of the crushing box 1, making room for the lower side of the crushing blade 20 to facilitate material dropping. The wind fan blades 13 drive the airflow to flow upward from the filter hole 11. The faster the rotation speed of the wind fan blades 13, the greater the airflow speed in the filter hole 11, the airflow hinders the falling of material particles, and the slower the downward flow rate of the material particles through the filter hole 11. A large number of material particles are on the upper side of the rotating disk 6, which is conducive to pushing the crushed material to accumulate around by the material particles. This design only needs to adjust the rotation speed of the servo motor 5 to adjust the rate at which the material particles fall through the filter hole 11 and control the speed at which the crushed material accumulates around.

[0042] When discharging is required, the speed of the servo motor 5 is increased, and the centrifugal force of the rotating disk 6 is increased, which is conducive to the discharge of the material from the discharge pipe 3; by arranging a temporary storage tube 15 on the upper side of the rotating disk 6, the material particles ejected downward by the pushing assembly enter the temporary storage tube 15 after rebounding, the wind fan blades 13 rotate at high speed, and the wind resistance presses the wind fan blades 13, driving the lifting disk 16 to move downward, the discharge port 18 is opened, and a large amount of material particles are ejected from the discharge port 18 to the surroundings, and the material on the upper side of the rotating disk 6 is forced out by impact, which has the function of forced discharging and feeding other equipment. It should be noted that, for example, the outlet end of the discharge pipe 3 is connected to the inlet of the granulator. The power for discharging the material from the discharge pipe 3 comes from the centrifugal force of the rotating disk 6 and the impact force of the material particles, which can ensure a longer discharge distance, and is not driven by wind. This can prevent the wind from being too strong, material fragments and powder from overflowing to pollute the environment, and prevent a large amount of airflow from entering the granulator and taking away the heat energy of the molten material in the granulator, which is more environmentally friendly.

[0043] The crushing feeder proposed in the present invention uses a pushing assembly to eject material particles on the upper side of the feed hopper 2. Under the impact force of the material particles, the "lighter material" enters the crushing box 1 quickly and continuously. Compared with feeding in bundles, it can avoid the jamming of crushing and cutting. Compared with feeding by air blast, it can reduce the wind pressure in the equipment and reduce the overflow of materials and dust, and has a more energy-saving forced feeding function.

[0044] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An energy-saving crushing feeder for polymer materials, comprising a crushing box (1), a feed hopper (2) provided on the upper side of the crushing box (1), and a discharge pipe (3) fixedly installed on the side of the crushing box (1), characterized in that: A central shaft (4) is rotatably mounted inside the crushing box (1), a servo motor (5) for driving the central shaft (4) to rotate is fixedly mounted on the surface of the crushing box (1), a cutting blade (26) and a rotating disk (6) are fixedly mounted on the surface of the central shaft (4), the rotating disk (6) divides the inner cavity of the crushing box (1) into an upper chamber and a lower chamber, the cutting blade (26) is arranged in the upper chamber of the crushing box (1), and the discharge pipe (3) is connected to the upper chamber located on the upper side of the rotating disk (6); A pushing assembly is installed on the upper side of the crushing box (1), and the pushing assembly includes a storage bin (7) fixedly installed on the upper side of the crushing box (1), a guide pipe (8) is fixedly installed at the bottom of the storage bin (7), and the guide pipe (8) extends downward into the feed hopper (2), and an electromagnetic control valve (9) for controlling the opening and closing of the guide pipe (8) is installed at the bottom of the storage bin (7), and an air supply pipe (10) is installed inside the guide pipe (8), and the air outlet end of the air supply pipe (10) opens toward the lower end of the guide pipe (8). Granular materials are stored in the storage bin (7), and when the air supply pipe (10) exhausts air downward, the granular materials are transported into the crushing box (1).

2. The energy-saving crushing feeder for polymer materials according to claim 1, characterized in that: A plurality of filter holes (11) are provided on the surface of the rotating disk (6), the aperture of the filter holes (11) being larger than the particle size of the granular material, and the upper chamber and the lower chamber are connected through the filter holes (11).

3. The energy-saving crushing feeder for polymer materials according to claim 2, characterized in that: The bottom end of the central shaft (4) extends to the lower side of the rotating disk (6) and is fixedly mounted with a hexagonal shaft (12). Wind blades (13) are slidably mounted on the surface of the hexagonal shaft (12). A support spring (14) is sleeved on the surface of the hexagonal shaft (12) for pressing the wind blades (13) upward.

4. The energy-saving crushing feeder for polymer materials according to claim 3, characterized in that: A temporary storage cylinder (15) is fixedly mounted on the upper surface of the rotating disk (6), a mesh cover is fixedly mounted on the upper end of the temporary storage cylinder (15), a lifting disk (16) is slidably mounted inside the temporary storage cylinder (15), the lifting disk (16) is slidably sleeved on the surface of the central shaft (4), a connecting rod (17) is fixedly mounted on the lower surface of the lifting disk (16), the connecting rod (17) slides through the rotating disk (6), and the bottom end of the connecting rod (17) is fixedly connected to the upper surface of the wind fan blade (13), and a plurality of discharge ports (18) are opened around the temporary storage cylinder (15).

5. The energy-saving crushing feeder for polymer materials according to claim 4, characterized in that: A driven mesh plate (19) is fixedly mounted on the surface of the temporary storage cylinder (15), and the driven mesh plate (19) has a conical structure. A plurality of crushing blades (20) are fixedly mounted on the inner wall of the crushing box (1), and the plurality of crushing blades (20) are in sliding contact with the lower surface of the driven mesh plate (19).

6. The energy-saving crushing feeder for polymer materials according to claim 5, characterized in that: A feeding window is provided on the upper surface of the crushing box (1), and the feed hopper (2) is connected to the upper chamber of the crushing box (1) through the feeding window. Two fixed blades (21) are fixedly mounted on the inner top wall of the crushing box (1), and the two fixed blades (21) are respectively arranged on both sides of the feeding window, and the cutting blade (26) is in sliding contact with the lower surface of the fixed blade (21).

7. An energy-saving crushing feeder for polymer materials according to any one of claims 1 to 6, characterized in that: A push fence (22) is fixedly mounted on the upper surface of the rotating disk (6), the outer surface of the push fence (22) is in sliding contact with the inner wall of the crushing box (1), and a gate (23) is slidably inserted into the interior of the discharge pipe (3).

8. The energy-saving crushing feeder for polymer materials according to claim 7, characterized in that: A vent valve (24) is fixedly mounted on the surface of the pulverizing box (1), and the lower chamber of the pulverizing box (1) is connected to the external space via the vent valve (24).

9. The energy-saving crushing feeder for polymer materials according to claim 8, characterized in that: The bottom of the lower chamber of the crushing box (1) is a conical structure. A recovery pipe (25) is fixedly installed at the bottom of the crushing box (1). The material of the granular material is the same as the material to be delivered into the feed hopper (2).

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