Energy-saving type crushing feeding machine for high polymer materials

Abstract

The invention relates to the technical field of feeding machines, and discloses an energy-saving crushing feeding machine for high polymer materials, which comprises a crushing box, a feed hopper is arranged on the upper side of the crushing box, a discharge pipe is fixedly mounted on the side surface of the crushing box, and a central shaft is rotatably mounted in the crushing box; a servo motor for driving the center shaft to rotate is fixedly installed on the surface of the smashing box, a cutting blade and a rotating disc are fixedly installed on the surface of the center shaft, a pushing assembly is installed on the upper side of the smashing box, and particle materials are stored in the pushing assembly. According to the crushing and feeding machine, the material pushing assembly is used for spraying material particles on the upper side of the feeding hopper, light materials rapidly and continuously enter the crushing box under the impact force effect of the material particles, compared with bundled feeding, blockage caused by crushing and cutting can be avoided, compared with air blowing feeding, air pressure in equipment can be reduced, and the crushing and feeding efficiency is improved. The overflow of materials and dust is reduced, and the forced feeding function is more energy-saving.

Description

Technical Field

[0001] The present invention relates to the technical field of feeding machines, and in particular to an energy-saving crushing feeding machine for polymer materials. Background Art

[0002] During the recycling and processing of waste polymer materials, a crushing device is required for crushing. To solve the feeding problem, in the prior art, a patent document with the publication number CN104354244B discloses a forced feeding mechanism and a forced feeding method for a plastic crusher. Among them, the forced feeding mechanism includes a feeding hopper and a feeding mechanism. The feeding mechanism includes a feeding rotor and a driving mechanism for driving the feeding rotor to rotate. Among them, the feeding rotor is arranged in the feeding hopper and above the moving knife. The cross-section of the feeding rotor is non-uniform in diameter 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 feeding rotor and the moving knife forms a pre-crushing chamber for conveying the plastic to be crushed, and the space between the moving knife, two fixed knives, and the screen forms a crushing chamber.

[0003] The above-mentioned forced feeding device 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 bundled materials are fed together, it is easy to cause blockage. If the materials are fed after being unbundled, the materials are light and not easy to enter the equipment, resulting in low processing efficiency. If the materials are pushed by blowing air, the crushed materials and dust are easy to fly out and pollute the environment. Based on this, the existing feeding mechanism has the problem of inconvenient continuous feeding of light materials, bringing many inconveniences to use. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawback in the prior art that the existing feeding mechanism is inconvenient for continuous feeding of light materials, and to propose an energy-saving crushing feeding machine for polymer materials.

[0005] To achieve the above purpose, the present invention adopts the following technical solution: An energy-saving crushing feeding machine for polymer materials includes a crushing box. A feeding hopper is arranged on the upper side of the crushing box, and a discharge pipe is fixedly installed on the side surface of the crushing box. A central shaft is rotatably installed inside the crushing box, and 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 communicated with the upper chamber located above the rotating disk.

[0006] A feeding component is installed on the upper side of the crushing box. The feeding component includes a storage bin fixedly installed on the upper side of the crushing box. A diversion pipe is fixedly installed at the bottom of the storage bin and extends downward into the feeding hopper. An electromagnetic control valve for controlling the opening and closing of the diversion pipe is installed at the bottom of the storage bin. An air supply pipe is installed inside the diversion pipe, and the air outlet end of the air supply pipe faces the lower opening of the diversion pipe. Granular materials are stored in the storage bin. When the air supply pipe exhausts air downward, the granular materials are conveyed into the crushing box. By using the feeding component to spray the material particles above the feeding hopper, under the impact force of the material particles, the lighter materials can quickly and continuously enter the crushing box, realizing the function of automatic feeding.

[0007] Preferably, a plurality of filter holes are formed on the surface of the rotating disk, and the aperture of the filter holes is larger than the particle size of the granular materials. The upper chamber and the lower chamber are communicated through the filter holes. The bottom end of the central shaft extends to the lower side of the rotating disk and is fixedly installed with a hexagonal shaft. A wind fan blade is slidably installed on the surface of the hexagonal shaft. A support spring that abuts upward against the wind fan blade is sleeved on the surface of the hexagonal shaft. The wind fan blade pushes the air flow to enter the filter holes from bottom to top, and can adjust the downward flow rate of the material particles passing through the filter holes.

[0008] Preferably, a temporary storage cylinder is fixedly installed on the upper surface of the rotating disk. A mesh cover is fixedly installed at the upper end of the temporary storage cylinder. A lifting disk is slidably installed inside the temporary storage cylinder. The lifting disk is slidably sleeved on the surface of the central shaft. A connecting rod is fixedly installed on the lower surface of the lifting disk. The connecting rod slidably passes through the rotating disk, and the bottom end of the connecting rod is fixedly connected to the upper surface of the wind fan blade. A plurality of discharge ports are formed around the temporary storage cylinder.

[0009] A driven mesh plate is fixedly installed on the surface of the temporary storage cylinder. The driven mesh plate is in a conical structure. A plurality of crushing blades are fixedly installed on the inner wall of the crushing box. All 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 materials.

[0010] Preferably, a material conveying window is formed on the upper surface of the crushing box. The feeding hopper is communicated with the upper chamber of the crushing box through the material conveying 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 material conveying window. The cutting blade is in sliding contact with the lower surface of the fixed blade. A shearing action is formed between the cutting blade and the fixed blade to cut the longer materials and prevent the materials from winding around the cutting blade.

[0011] Preferably, a pushing fence is fixedly installed on the upper surface of the rotating disk. The outer surface of the pushing fence is in sliding contact with the inner wall of the crushing box. A gate plate is slidably inserted into the inside of the discharge pipe. After the gate plate is opened, it is convenient to discharge the materials in the crushing box from the discharge pipe.

[0012] Preferably, an air vent valve is fixedly installed on the surface of the crushing box. The lower chamber of the crushing box is communicated with the external space through the air vent valve. The bottom of the lower chamber of the crushing box is of a conical structure. A recovery pipeline is fixedly installed at the bottom of the crushing box. The material of the granular material is the same as that of the material to be fed in the feed hopper. When using this device to supply materials to a plastic granulator, the plastic particles produced by the granulator can be added to the storage bin for use.

[0013] The present invention has the following beneficial effects: 1. For the crushing and feeding machine proposed by the present invention, material particles are sprayed on the upper side of the feed hopper by the pushing component. Under the impact force of the material particles, the "lighter materials" can quickly and continuously enter the crushing box. Compared with feeding in bundles, it can avoid jamming during crushing and cutting. Compared with feeding by blowing air, it can reduce the air pressure inside the equipment and reduce the overflow of materials and dust, and has a more energy-saving forced feeding function.

[0014] 2. For the crushing and feeding machine proposed by the present invention, by setting the cutting blade, it has the function of cutting long materials. By setting the driven mesh plate and the crushing blade, the material falls on the upper side of the driven mesh plate and rotates with the driven mesh plate. The material particles sprayed downward by the pushing component prompt the material to extend to the lower side of the driven mesh plate, and the material is chopped by the crushing blade, realizing the coordination of the feeding and crushing speeds. As long as the servo motor keeps running at a constant speed and the spraying flow rate of the pushing component is changed, the working efficiency of the crushing process can be adjusted. This design reduces the energy consumption required for the servo motor to change speed and is more energy-saving.

[0015] 3. For the crushing and feeding machine proposed by the present invention, by setting the rotating disk and the 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, causing the material to accumulate around the inner cavity of the crushing box, creating space for the lower side of the crushing blade and facilitating the falling of materials. The wind fan blades drive the air flow to flow upward through the filter holes. The faster the rotation speed of the wind fan blades, the greater the wind speed in the filter holes, and the slower the downward flow rate of the material particles passing through the filter holes. 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. With this design, only by adjusting the rotation speed of the servo motor can the rate of the material particles falling through the filter holes be adjusted and the speed of the crushed material accumulating around be controlled.

[0016] 4. For the crushing feeder proposed by the present invention, when discharging materials, the rotation speed of the servo motor is increased, the centrifugal force of the rotating disk is increased, which is beneficial to the discharge of materials from the discharge pipe. By arranging a temporary storage cylinder on the upper side of the rotating disk, the material particles ejected downward by the pushing component rebound and enter the temporary storage cylinder. The wind fan blades rotate at high speed, and the resistance of the wind presses down the wind fan blades, driving the lifting disk to move downward, and the discharge port is opened. A large number of material particles are ejected from the discharge port in all directions, and the materials on the upper side of the rotating disk are forcibly pushed out by impact, having the functions of forced discharging and feeding other equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic three-dimensional structure diagram of the crushing feeder proposed by the present invention Figure One ; Figure 2 is a schematic three-dimensional structure diagram of the crushing feeder proposed by the present invention Figure Two ; Figure 3 is a schematic three-dimensional structure diagram of the crushing feeder proposed by the present invention Figure Three ; Figure 4 is Figure 1 an enlarged schematic diagram of the structure at A in Figure 5 is an exploded structure schematic diagram of the crushing feeder proposed by the present invention; Figure 6 is a partially sectioned schematic three-dimensional structure diagram of the rotating disk proposed by the present invention; Figure 7 is a front sectional structure schematic diagram of the crushing feeder proposed by the present invention.

[0018] In the figure: 1. Crushing box; 2. Feed hopper; 3. Discharge pipe; 4. Central shaft; 5. Servo motor; 6. Rotating disk; 7. Storage bin; 8. Diversion pipe; 9. Electromagnetic 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 disk; 17. Connecting rod; 18. Discharge port; 19. Driven mesh plate; 20. Crushing blade; 21. Fixed blade; 22. Pushing fence; 23. Gate plate; 24. Ventilation valve; 25. Recovery pipeline; 26. Cutting blade. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] Refer to Figures 1 - 7, An energy-saving crushing feeder for polymer materials, comprising a crushing box 1, a feeding hopper 2 is arranged on the upper side of the crushing box 1, a discharge pipe 3 is fixedly installed on the side surface 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, the servo motor 5 drives the central shaft 4 to rotate through belt transmission, a cutting blade 26 and a rotating disk 6 are fixedly installed 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, the discharge pipe 3 is communicated with the upper chamber located above the rotating disk 6, the bottom of the lower chamber of the crushing box 1 is of a conical structure, and a recovery pipe 25 is fixedly installed at the bottom of the crushing box 1.

[0021] Among them, referring to Figure 2 , a pushing fence 22 is fixedly installed on the upper surface of the rotating disk 6, the outer surface of the pushing fence 22 is in sliding contact with the inner wall of the crushing box 1, and a gate plate 23 is slidably inserted inside the discharge pipe 3.

[0022] A pushing component is installed on the upper side of the crushing box 1. The pushing component includes a storage bin 7 fixedly installed on the upper side of the crushing box 1, a diversion pipe 8 is fixedly installed at the bottom of the storage bin 7, the diversion pipe 8 extends downward into the feeding hopper 2, an electromagnetic control valve 9 for controlling the opening and closing of the diversion pipe 8 is installed at the bottom of the storage bin 7, an air supply pipe 10 is installed inside the diversion pipe 8, and the air outlet end of the air supply pipe 10 faces the lower end opening of the diversion pipe 8. For details, see Figure 4 , an air compressor is connected to the air supply pipe 10 through a pipeline to inject high-pressure air into the air supply pipe 10.

[0023] During the use process, granular materials are stored in the storage bin 7. By adjusting the electromagnetic control valve 9, the speed of the granular materials in the storage bin 7 entering the diversion pipe 8 is controlled. When the air supply pipe 10 discharges air downward, the high-pressure air discharged from the air supply pipe 10 provides kinetic energy for the granules in the diversion pipe 8, and the granular materials are conveyed downward from the feeding hopper 2 into the crushing box 1. It should be noted that the material of the granular materials is the same as the material of the materials to be fed in the feeding hopper 2, and the material particles are granular with similar particle sizes, and the materials to be fed in the feeding hopper 2 are film-shaped materials.

[0024] Among them, a plurality of filter holes 11 are formed on the surface of the rotating disk 6, the aperture of the filter holes 11 is larger than the particle size of the granular materials, and the upper chamber and the lower chamber are communicated through the filter holes 11.

[0025] In this embodiment, as Figure 5As shown in the figure, the bottom end of the central shaft 4 extends to the lower side of the rotating disk 6, and a hexagonal shaft 12 is fixedly installed. A wind turbine blade 13 is slidably installed on the surface of the hexagonal shaft 12. A support spring 14 that presses against the wind turbine blade 13 upward is sleeved on the surface of the hexagonal shaft 12. When the rotational speed of the wind turbine blade 13 is high enough, the acting force of wind resistance presses down the wind turbine blade 13, and the support spring 14 is compressed, causing the wind turbine blade 13 to move downward along the hexagonal shaft 12.

[0026] In this embodiment, as Figure 6 shown, a temporary storage cylinder 15 is fixedly installed on the upper surface of the rotating disk 6. A mesh cover is fixedly installed at the upper end of the temporary storage cylinder 15. A lifting disk 16 is slidably installed 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 installed on the lower surface of the lifting disk 16. The connecting rod 17 slidably passes through the rotating disk 6, and the bottom end of the connecting rod 17 is fixedly connected to the upper surface of the wind turbine blade 13. A plurality of discharge ports 18 are formed around the temporary storage cylinder 15.

[0027] A driven mesh plate 19 is fixedly installed on the surface of the temporary storage cylinder 15. The driven mesh plate 19 has a conical structure. A plurality of crushing blades 20 are fixedly installed on the inner wall of the crushing box 1. All the plurality of crushing blades 20 are in sliding contact with the lower surface of the driven mesh plate 19. When the crushing blades 20 rotate, the materials extending to the lower side of the driven mesh plate 19 can be chopped. Refer to Figure 5 .

[0028] Among them, a feeding window is formed on the upper surface of the crushing box 1. The feeding hopper 2 is communicated with 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. The cutting blade 26 is in sliding contact with the lower surface of the fixed blade 21.

[0029] An air vent valve 24 is fixedly installed on the surface of the crushing box 1. The lower chamber of the crushing box 1 is communicated with the external space through the air vent valve 24. By adjusting the opening and closing size of the air vent valve 24, the amount of external air entering the lower chamber of the crushing box 1 can be controlled.

[0030] Working principle: As Figure 7 shown, materials such as plastic films and plastic bags are put into the feeding hopper 2. The material particles are ejected from the diversion pipe 8. The high-speed ejected material particles impact the surfaces of materials such as plastic films and plastic bags, and push these materials into the crushing box 1. At this time, the servo motor 5 is started to drive the central shaft 4 to rotate. The cutting blade 26 cuts the longer materials. Then the materials fall to the upper side of the driven mesh plate 19. With the rotation of the driven mesh plate 19, the material particles ejected downward by the material 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. 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; Part of the material particles fall into the temporary storage cylinder 15, and part pass through the filter holes 11 and fall to the lower side of the rotating disk 6, and then accumulate in the recovery pipeline 25, which is convenient for subsequent discharge and recycling. When discharging materials is required, the gate 23 is slid open, and the rotation speed of the servo motor 5 is increased. At this time, the rotation speed of the wind fan blade 13 increases, the wind resistance increases, and the wind resistance exerts a downward pressure on the wind fan blade 13, causing the wind fan blade 13 to move downward, driving the lifting disk 16 to move downward, and the discharge port 18 is opened. The material particles in the temporary storage cylinder 15 are ejected around by the discharge port 18 under the action of centrifugal force. Under the action of the centrifugal force of the rotating disk 6 and the impact of the material particles, the crushed materials on the upper side of the rotating disk 6 are discharged through the discharge pipe 3.

[0031] The crushing feeder proposed by the present invention has the function of cutting long materials by setting the cutting blade 26. By setting the driven mesh plate 19 and the crushing blade 20, the materials fall on the upper side of the driven mesh plate 19 and rotate together with the driven mesh plate 19. The material particles ejected downward by the pushing component cause the materials to extend to the lower side of the driven mesh plate 19, and the materials are chopped by the crushing blade 20, realizing the coordination of the feeding and crushing speeds. During the crushing process, only the servo motor 5 needs to keep running at a constant speed. By changing the injection flow rate of the pushing component, the working efficiency of the crushing process can be adjusted, and there is no need for the servo motor 5 to run at a high speed for a long time. This design reduces the energy consumption required for the servo motor 5 to change speed and is more energy-saving.

[0032] By setting the rotating disk 6 and arranging the wind fan blade 13 on the lower side of the rotating disk 6, the crushed materials are on the upper side of the rotating disk 6. The rotating disk 6 provides centrifugal force for the materials, causing the materials to accumulate around the inner cavity of the crushing box 1, creating space for the lower side of the crushing blade 20 and facilitating the falling of materials. The wind fan blade 13 drives the air flow to flow upward through the filter holes 11. The faster the rotation speed of the wind fan blade 13, the greater the air flow speed in the filter holes 11. The air flow hinders the falling of the material particles, and the downward flow rate of the material particles passing through the filter holes 11 becomes slower. A large number of material particles are on the upper side of the rotating disk 6, which is beneficial to pushing the crushed materials to accumulate around by the material particles. With this design, only by adjusting the rotation speed of the servo motor 5 can the rate of the material particles falling through the filter holes 11 be adjusted and the accumulation speed of the crushed materials around be controlled.

[0033] When discharging is required, increase the rotational speed of the servo motor 5, and the centrifugal force of the rotating disk 6 increases, which is beneficial to the discharge of materials from the discharge pipe 3. By arranging a temporary storage cylinder 15 above the rotating disk 6, the material particles ejected downward by the pushing component rebound and enter the temporary storage cylinder 15. The wind fan blades 13 rotate at a high speed, and the resistance of the wind presses down the wind fan blades 13, driving the lifting disk 16 to move downward, and the discharge port 18 is opened. A large number of material particles are ejected from the discharge port 18 in all directions, and the materials above the rotating disk 6 are forcibly ejected through impact, which has the functions 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 materials 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 relatively long discharge distance and is not driven by wind for discharging. In this way, it can prevent the large wind force from causing the overflow of material fragments and powder, polluting the environment, and prevent a large amount of air flow from entering the granulator and taking away the heat energy of the molten materials in the granulator, which is more environmentally friendly.

[0034] The crushing feeder proposed by the present invention ejects material particles by using a pushing component above the feed hopper 2. Under the action of the impact force of the material particles, the "lighter materials" can quickly and continuously enter the crushing box 1. Compared with feeding in bundles, it can avoid the jamming of crushing and cutting. Compared with feeding by blowing air, it can reduce the air pressure in the equipment and reduce the overflow of materials and dust, and has the function of more energy-saving forced feeding.

[0035] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An energy-saving crushing feeder for polymer materials, comprising a crushing box (1), a feed hopper (2) is arranged on the upper side of the crushing box (1), and a discharge pipe (3) is fixedly installed on the side of the crushing box (1), characterized in that: The pulverizing box (1) has a central shaft (4) rotatably mounted inside it, a servo motor (5) for driving the central shaft (4) to rotate is fixedly mounted on the surface of the pulverizing 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 pulverizing box (1) into an upper chamber and a lower chamber, the cutting blade (26) is arranged in the upper chamber of the pulverizing box (1), and the discharge pipe (3) is connected to the upper chamber located on the upper side of the rotating disk (6); A material pushing assembly is installed on the upper side of the crushing box (1), and the material pushing assembly includes a material 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 material storage bin (7), and 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 material storage bin (7); 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 material 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 diameter of the filter holes (11) is larger than the particle diameter of the granular material; and the upper chamber and the lower chamber are connected via 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 is 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 blade (13), and a plurality of discharge ports (18) are provided 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) is of 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: The upper surface of the crushing box (1) is provided with a feeding window, 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 plate (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 ventilation 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 ventilation 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 of a conical structure, and 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 that of the material to be delivered into the feed hopper (2).

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