EVA, rubber leftover corner powder grinding machine

Abstract

The application discloses an EVA and rubber leftover material smashing mill, which comprises a cutter holder, a machine shell and a grinding wheel, an arc-shaped recessed cavity is concaved in the left side surface of the cutter holder and used for accommodating part of the grinding wheel, a cutter body is installed in the arc-shaped recessed cavity and is in close fit with the arc-shaped recessed cavity, a cutting cutter groove is arranged on the left side surface of the cutter body, a feeding port is formed in the top surface of the machine shell, the cutting cutter groove is provided with a plurality of cutting cutter grooves, the cutting cutter groove has a rear cutter groove which extends downwardly and a front cutter groove which is located in front of the rear cutter groove and extends along the front-rear direction, the front cutter groove is in communication with the rear cutter groove and is arranged at an included angle, and the feeding port is located in the range of the rear cutter groove. Compared with the prior art, the rear cutter groove and the front cutter groove at the included angle can grind all the leftover materials in the feeding port into powder, the thickness of the leftover materials can be adjusted according to the actual thickness of the leftover materials, the application range is wide, the cutter holder and the machine shell can be continuously cooled when the mill is running, and the problem of dead materials does not occur.

Description

Technical Field

[0001] This invention relates to the field of pulverization technology, specifically to a grinding mill for pulverizing EVA and rubber scraps. Background Technology

[0002] The usual method for crushing EVA and rubber scraps involves first grinding them into granules and then pulverizing them at high temperatures using a rubber mixing mill. However, this process easily causes the EVA and rubber scraps to scorch. Therefore, the inventors have developed a scrap crusher. Its structure includes a housing, a cutter holder, and a grinding wheel. The grinding wheel is horizontally mounted inside the housing, and the cutter holder extends into the housing and is positioned to one side of the grinding wheel. The side of the cutter holder facing the grinding wheel has a recessed arc-shaped cavity for accommodating a portion of the grinding wheel. This arc-shaped cavity... The grinding wheels have a crushing and processing channel for raw materials to enter. The top surface of the machine casing has a feeding port, and the top surface of the cutter holder has a discharge port that is connected to both the feeding port and the crushing and processing channel. The machine casing has a discharge port on the other side of the grinding wheels. The discharge port and the cutter holder are located on opposite sides of the grinding wheels. Scrap materials enter the crushing and processing channel from the discharge port through the feeding port. At this time, the rotation of the grinding wheels can grind the scrap materials and transfer the ground scrap materials to the discharge port as the grinding wheels rotate, from which they are output outside the machine casing.

[0003] However, the current scrap crushers have an arc-shaped groove extending along the arc of the concave cavity. After the scrap enters, it is directly conveyed to the discharge port by the rotation of the arc-shaped groove and the grinding wheel. This results in a short residence time of the scrap in the crushing and processing channel, which means that the grinding efficiency of scraps such as EVA or rubber can only reach about 70%. Consequently, the scraps such as EVA or rubber cannot be completely ground into powder, resulting in low processing efficiency. Furthermore, the long-term working relationship between the grinding wheel and the blade will cause the blade temperature to rise, resulting in the scrap becoming stuck.

[0004] In view of this, the inventor conducted in-depth research on the above-mentioned problems, which led to the creation of this case. Summary of the Invention

[0005] The purpose of this invention is to provide a crushing mechanism for EVA and rubber scraps that has high processing efficiency and is less prone to producing dead material.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A grinding mill for crushing EVA and rubber scraps includes a cutter holder, a housing, and a grinding wheel. The cutter holder extends into the housing and is located outside one side of the grinding wheel. The grinding wheel is horizontally installed inside the housing, with the side of the grinding wheel where the cutter holder is located considered the right side, and the horizontal direction of the grinding wheel considered the front-to-back direction. The right side of the housing has an installation opening for the cutter holder to be inserted. The left side of the cutter holder has an arc-shaped cavity for a portion of the grinding wheel to be accommodated within it. A cutter body is installed within the arc-shaped cavity and fits snugly against it. The left side of the cutter body has a cutting groove, and there is a groove between the cutter body and the outer wall of the grinding wheel. The machine has a crushing and processing channel for raw materials to enter. A feeding port is provided on the top surface of the machine housing. A discharge port is provided on the top surface of the blade holder, which is connected to both the feeding port and the crushing and processing channel. A discharge port connected to the crushing and processing channel is provided on the left side of the machine housing. Several cutting grooves are provided. Each cutting groove is arranged at intervals along the arc direction of the arc-shaped cavity. Each cutting groove has a rear groove that extends downward and a front groove that is in front of the rear groove and extends in the front-back direction. The front groove and the rear groove are connected and set at an angle. The discharge port is located within the range of the rear groove.

[0008] The tool holder is provided with a cooling chamber located within the arc-shaped concave cavity. An inlet and an outlet connected to the cooling chamber are provided on the upper right side of the tool holder.

[0009] The tool holder has a base and a mounting plate. The base is located inside the machine housing through the mounting port. The left side of the base is recessed with the arc-shaped cavity. The left side of the top surface of the base has an opening that communicates with the arc-shaped cavity and leads to the outside of the left side of the base. This opening is the material feeding port. The mounting plate is located outside the right side of the machine housing. The mounting plate is equipped with a translation pushing mechanism that pushes the base to reciprocate relative to the mounting plate and a mounting structure for disassembling and fixing the mounting plate to the machine housing.

[0010] The aforementioned translational propulsion mechanism has a worm gear mechanism, which is mounted on a mounting plate. The worm gear mechanism has a worm wheel and a worm. The worm wheel is vertically arranged with its center line along the left-right direction. The worm is horizontally arranged along the front-back direction and located below the worm wheel. At the center of the worm wheel is a screw that is horizontally arranged along the left-right direction. The left end of the screw moves through the mounting plate into the seat and is screwed into the seat.

[0011] The aforementioned worm gear mechanism also has a housing, in which the worm wheel and worm are rotatably mounted. The housing is locked to the aforementioned mounting plate. There are two worm gear mechanisms, which are arranged left and right at intervals. A connecting rod is provided between the two worm gear mechanisms. The two ends of the connecting rod extend into the housing of the two worm gear mechanisms and are fixedly connected to the worm. The end of the worm that is away from the connecting rod extends out of the housing. A rotating handwheel that drives the worm to rotate is fitted on the outside of one of the worms.

[0012] The upper end of the aforementioned rear groove is located behind the lower end of the rear groove. The upper end of the rear groove extends to the rear edge of the cutter body. The lower end of the rear groove is connected to the rear end of the front groove. The front end of the front groove extends to the front edge of the cutter body.

[0013] A baffle plate is fixedly installed on the left side wall of the above-mentioned discharge port, which is horizontally arranged in the front-to-back direction to prevent EVA and rubber scrap particles from splashing out of the discharge port in the opposite direction.

[0014] The upper end of the aforementioned rear groove is located behind the lower end of the rear groove. The upper end of the rear groove extends to the rear edge of the cutter body. The lower end of the rear groove is connected to the rear end of the front groove. The front end of the front groove extends to the front edge of the cutter body.

[0015] The aforementioned housing has a front side plate, a rear side plate, and a cylindrical body horizontally arranged between the front and rear side plates. An upper top plate is fixed to the upper right side of the front side plate and the upper right side of the rear side plate. An arc-shaped hole extending along the curvature of the cylindrical body is opened on the right side. The cylindrical body forms an upper right end face and a lower right end face at the arc-shaped hole. A strip-shaped through hole extending along the front-back direction is opened on the left side of the lower right end face. This strip-shaped through hole is the discharge port. There is a gap between the left side wall of the upper top plate and the upper right end face. This gap is the feeding port. The discharge port is located directly above the feeding port. A discharge hopper connected to the feeding port is installed on the top surface of the upper top plate. The aforementioned seat extends between the front and rear side plates and is located below the upper top plate. The left side of the seat is in contact with the upper right end face and the lower right end face. The aforementioned grinding wheel is located inside the cylindrical body.

[0016] The front and rear ends of the aforementioned mounting plate have corresponding extension plates extending outwards to the right side of the front plate and the right side of the rear plate. Bolt holes are provided on the extension plates, and the front and rear plates have corresponding fixing holes for fixing the bolt holes. The extension plates, bolt holes, and fixing holes constitute the aforementioned mounting structure.

[0017] The top surface of the aforementioned seat is recessed downwards with a square groove, which is located on the right side of the feed inlet. A clamping block and a pushing block are provided in the square groove, with the pushing block located on the right side of the clamping block. The left and right sides of the clamping block are inclined surfaces, forming a flared structure that gradually expands from bottom to top. The left inner wall of the square groove is a fitting inclined surface that fits tightly against the left side of the clamping block, and the left side of the pushing block is a fitting inclined surface that fits tightly against the right side of the clamping block. The right side of the pushing block is flush with the right inner wall of the square groove. A side-tightening bolt with one end extending into the square groove and the other end outside the right side of the seat is screwed onto the upper right side of the aforementioned seat. An upper-tightening bolt that passes through the upper top plate and extends toward the clamping block is screwed onto the aforementioned top plate.

[0018] The front and rear side walls of the aforementioned seat are respectively provided with guide protrusions extending outward in the front-rear direction. The right side surface of the front side plate and the right side surface of the rear side plate are respectively provided with guide grooves that are recessed to the left for the guide protrusions to slide into. Limiting blocks are fixed on the top surfaces of the two guide protrusions. Clamping blocks that are opposite to the limiting blocks are provided on the rear side surface of the front side plate and the front side surface of the rear side plate. The two limiting blocks are clamped between the two clamping blocks.

[0019] The aforementioned arc-shaped concave cavity has an opening at the part that contacts the blade body, which is connected to the cooling chamber. The cavity wall of the aforementioned arc-shaped concave cavity is provided with a sealing element outside the opening, and the opening is within the range of the sealing element. The cavity wall of the aforementioned arc-shaped concave cavity is sealed and fitted with the aforementioned blade body through the aforementioned sealing element.

[0020] A rubber pad is fixed to the upper right end face of the aforementioned cylinder, and the rubber pad fits tightly against the left side face of the base; the front and rear sides of the aforementioned base have a side air inlet gap with the inner wall of the arc-shaped hole, and the lower left side face of the base has a bottom air inlet gap with the lower right end face of the arc-shaped hole.

[0021] The angle between the aforementioned front groove and the aforementioned rear groove is greater than or equal to 90 degrees and less than 180 degrees.

[0022] This invention discloses a grinding mill for crushing EVA and rubber scraps. In application, EVA or rubber scraps are fed into the rear cutting groove of the cutting blade through the feed inlet. The high-speed rotation of the grinding wheel, in conjunction with the cutting groove, causes the scraps to be crushed along with the rotation of the grinding wheel in the rear cutting groove. When the crushed material reaches the lower end of the rear cutting groove, the influence of the rear cutting groove prevents it from moving further in the direction of the grinding wheel's rotation, and instead transfers it to the front cutting groove. At this point, the crushed material is further ground by the grinding wheel in the front cutting groove, resulting in secondary powder. The process involves crushing the scrap material, allowing it to remain in the cutting tool holder for a longer period, ensuring 100% crushing of all scrap material with excellent crushing quality. Furthermore, during crushing, the distance between the base and the grinding wheel can be adjusted using the translational pushing mechanism to ensure that scrap materials of varying thicknesses are all within the cutting area, making it widely applicable. Finally, water can flow into the base through the liquid inlet, keeping the overall temperature of the cutting tool holder low, especially the blade body, which is cooled during operation, preventing overheating and potential scorching or dead material. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is an exploded view of the present invention;

[0025] Figure 3 This is a right view of the present invention;

[0026] Figure 4This is a perspective view of the grinding wheel of the present invention. Detailed Implementation

[0027] This invention provides a grinding mill for crushing EVA and rubber scraps, such as... Figure 1-4 As shown, the device includes a housing 1, a cutter holder 2, and a grinding wheel 3. The cutter holder 2 extends into the housing 1 and is located on one side of the grinding wheel 3. The grinding wheel 3 is horizontally installed inside the housing 1, with the side of the cutter holder 2 on the side of the grinding wheel 3 being the right side. The right side of the housing 1 has an installation opening for the cutter holder 2 to be inserted and installed. The left side of the cutter holder 2 has an arc-shaped cavity for a portion of the grinding wheel 3 to be accommodated. A cutter body 4 is installed in the arc-shaped cavity and fits against the cavity. The left side of the cutter body 4 has a cutting groove. There is a crushing and processing channel for raw materials to enter between the cavity wall of the arc-shaped cavity and the outer wall of the grinding wheel 3. The top surface of the housing 1 has a feeding port. The top surface of the cutter holder 2 has a discharge port 100 that communicates with both the feeding port and the crushing and processing channel. A feed hopper 200 that communicates with the discharge port 100 is fixedly installed on the top surface of the feeding port. The left side of the housing 1 has a discharge port 300 that communicates with the crushing and processing channel.

[0028] Specifically, the housing 1 has a front side plate 11, a rear side plate 12, and a cylindrical body 13 horizontally disposed between the front side plate 11 and the rear side plate. An upper top plate 14 is fixed to the upper right side of the front side plate 11 and the upper right side of the rear side plate 12. An arc-shaped hole extending along the curvature of the cylindrical body 13 is opened on the right side. The cylindrical body 13 has an upper right end face and a lower right end face at the arc-shaped hole. A strip extending along the front-back direction is opened on the left side of the lower right end face. The strip-shaped through hole is the discharge port 300. There is a gap between the left side wall and the upper right end face of the upper top plate 14. This gap is the feeding port. The discharge port 100 is located directly above the feeding port. The top surface of the upper top plate 14 is equipped with a feeding hopper 200 that communicates with the feeding port. The seat body extends between the front side plate and the rear side plate and is located below the upper top plate 14. The left side face, the upper right end face, and the lower right end face of the seat body 21 are in contact with each other. The grinding wheel 3 is located inside the cylinder 13.

[0029] The cutting grooves are provided in a plurality of manner, and are arranged at intervals along the arc direction of the arc-shaped cavity. Each cutting groove has a rear groove 41 extending downwards at an incline and a front groove 42 located in front of the rear groove 41 and extending in a front-rear direction. The front groove 42 is connected to the rear groove 41 and is set at an angle. The angle between the front groove 42 and the rear groove 41 is greater than or equal to 90 degrees and less than 180 degrees, denoted as 'a', where 90°≦a<180°, with 100° being optimal. Testing has shown that limiting this angle range results in better material crushing. The rear groove 41 is preferably an inclined straight groove. The front cutting groove 42 is preferably a straight groove that is close to a straight line. The feed port 100 is located within the range of the rear cutting groove 41. The feed port 100 can guide the EVA and rubber scraps into the rear cutting groove 41 first, so that the EVA and rubber scraps can be ground in the rear cutting groove 41 and then introduced into the front cutting groove 42 for further grinding and crushing. This avoids the situation where the EVA and rubber scraps are directly conveyed to the discharge port 300 when they enter the cutting groove with the rotation of the traditional arc-shaped cutting groove and grinding wheel 3, resulting in a shorter residence time of the scraps in the crushing and processing channel, thus preventing the scraps from being completely ground into powder.

[0030] The tool holder 2 has a base 21 and a mounting plate 22. The left side of the base 21 has an arc-shaped cavity. The mounting plate 22 is located outside the right side of the housing 1. The mounting plate 22 is equipped with a translational pushing mechanism 5 for pushing the base 21 to move in the direction away from the mounting plate 22, and an installation structure for disassembling and fixing the mounting plate 22 to the housing 1. Specifically, the translational pushing mechanism 5 has a worm gear mechanism 51 and a connecting rod 52. There are two worm gear mechanisms 51, which are installed on the mounting plate 22 with a back-to-back interval. The worm gear mechanism 51 is an existing structure. The worm gear mechanism 51 has a housing 511 and a mounting rod installed on the housing 511. The worm gear and worm shaft are locked to the right side of the mounting plate 22 by the housing 511. The two worm gears are vertically arranged with their center lines aligned in the left-right direction, meaning both ends of the worm gears face left and right. The worm shaft is horizontally arranged in the front-back direction and located below the worm gears. The center of the worm gears has a horizontally arranged screw 512. The left end of the screw 512 moves through the mounting plate 22 into the seat 21 and is screwed into it. The right side of the seat 21 has a threaded hole for the screw 512 to extend into and engage with it. The two worm shafts are connected together by a connecting rod 52. The front and rear ends of the mounting plate 22 extend outwards, with the front end having a corresponding screw shaft. The extension plates on the outer right side of plate 11 and the outer right side of rear plate 12 have bolt holes (not shown in the figure). Corresponding bolt holes on the front plate 11 and rear plate 12 have corresponding mounting holes (not shown in the figure). The extension plates, bolt holes, and mounting holes constitute the aforementioned mounting structure. Bolts are threaded through the bolt holes and into the corresponding mounting holes on the housing 1 for installation, allowing the mounting plate 22 to be fixed to the right side wall of the housing 1. For ease of installation, two connecting rods 52 are provided. The two connecting rods 52 are assembled and then welded together. The two ends of the connecting rods 52 extend into the housing 511 and... The worm gear is fixedly connected, with its end extending out of the housing 511 away from the connecting rod. A rotating handwheel is fitted around one of the worm gears to drive its rotation. Specifically, the front end of the worm in the front worm gear mechanism extends forward out of the housing 511, and the rear end of the worm in the rear worm gear mechanism 51 extends backward out of the housing 511. In application, the mounting plate 22 is installed on the crusher's casing. Rotating the handwheel causes the two worm gears to rotate synchronously with the connecting rod. This synchronous rotation of the two worm gears causes the two worm wheels to rotate synchronously, which in turn causes the screw 512 to rotate. The rotation of the screw 512 allows the base 21 to be adjusted left and right relative to the mounting plate 22. In this invention, the translation mechanism 5 can also be hydraulic or electric; any method capable of driving the base 21 to move horizontally can be used.

[0031] The seat 21 has a cooling chamber located within an arc-shaped concave cavity. The upper right side of the seat 21 has an inlet 211 and an outlet 212 communicating with a cold water chamber. Preferably, the seat 21 is a hollow structure formed by a left side plate, a right side plate, an upper top plate, a lower bottom plate, a front side plate, and a rear side plate. The upper right side plate has an inlet 211 and an outlet 212, which are spaced apart. In this invention, the liquid in the cooling chamber can be water, coolant, or cooling gas.

[0032] This invention discloses a grinding mill for crushing EVA and rubber scraps. In application, the scraps are fed into the rear cutter groove 41 of the cutting groove via the feed inlet 100. The high-speed rotation of the grinding wheel 3, combined with the rear cutter groove 41's movement in the direction of the grinding wheel's rotation, causes the scraps to wear down while simultaneously being output along the inclined direction of the rear cutter groove 41. When the crushed material reaches the lower end of the rear cutter groove 41, it is influenced by the rear cutter groove 41 and rotates to the front cutter groove 42, where it is further ground by the grinding wheel 3. This process effectively crushes the scraps. The material undergoes secondary crushing, and after further crushing, it rotates along the front side of the blade body 4 to the discharge port 300 of the crusher as the grinding wheel 3 rotates. This avoids the problem in traditional scrap crushers where the crushing grooves are arc-shaped grooves extending along the arc direction of the concave cavity. This prevents some material from being partially crushed within the blade holder 2 and being sent to the discharge port 300 of the crusher without being ground, resulting in a scrap crushing rate of only about 70%. Furthermore, the angle between the front groove 42 and the rear groove 41 ensures that the material is properly crushed at the rear groove 41. The material is smoothly transferred to the front cutter groove 42, ensuring that all material fed into the cutter holder 2 is pulverized, resulting in high pulverization efficiency. Furthermore, when the thickness of the pulverized material varies, rotating the handwheel can drive the worm gear to rotate, and with the cooperation of the connecting rod 52, the two worm gear mechanisms 51 rotate synchronously, thereby causing the two screws 512 to rotate synchronously. The synchronous rotation of the two screws 712, while the mounting plate 22 is fixed to the machine housing 1, causes the seat 21 to translate left and right relative to the mounting plate 22. The distance between the blade body 4 and the grinding wheel 3 can be adjusted to adapt to the crushing of materials of different thicknesses, making it highly adaptable. Finally, during the processing, external water can be introduced into the cooling chamber through the liquid inlet 211, and then discharged through the liquid outlet 212 and introduced back in through the liquid inlet 211. This cycle keeps the entire blade holder 2 constantly cooled by cold water, keeping the overall temperature of the blade holder 2 low. In particular, the temperature of the blade body 4 is cooled while working, preventing the blade body 4 from overheating and causing scorching and material failure.

[0033] In this invention, the top surface of the base 21 is recessed downwards to form a square groove, which is located to the right of the feed inlet 100. A clamping block 6 and a pushing block 7 are disposed within the square groove, with the pushing block 7 located to the right of the clamping block 6. The left and right sides of the clamping block 6 are inclined surfaces, forming a flared structure that gradually expands from bottom to top. That is, the clamping block 6 is equivalent to a trapezoidal block that is larger at the top and smaller at the bottom. The left inner wall of the square groove is a fitted inclined surface that fits snugly against the left side of the clamping block 6, i.e., the left inner wall of the square groove is an inclined surface that slopes to the right. The left side of the pushing block 7 is a fitted inclined surface that fits snugly against the clamping block 6. The right side of the push block 7 is inclined to the left, and the top surfaces of the clamping block 6, the push block 7, and the base 21 are on the same plane. The right side of the push block 7 is flush with the right inner wall of the square groove, meaning that both the right side of the push block 7 and the right inner wall of the square groove are flat. A side-clamping bolt 81 is screwed onto the upper part of the right side plate of the base 21. One end of the bolt extends into the square groove, and the other end is located outside the right side of the base 21. Preferably, two side-clamping bolts 81 are provided, spaced apart along the front and rear sides. The head of 81 is located outside the right side of the seat 21. A bolt hole for the side clamping bolt 81 to pass through is provided on the right wall of the square groove. The top surface of the housing 1 is fitted with an upper clamping bolt 82, one end of which extends into the housing 1, and the other end is located outside the top surface of the housing 1. Preferably, two upper clamping bolts 82 are provided, spaced apart along the front and rear sides. During application, when the seat 21 is pushed into the housing 1, rotating the side clamping bolt 81 causes it to rotate and extend to the left into the square groove. The rod of the side clamping bolt 81 pushes the pushing block 7 to move to the left. The clamping block 6 is moved to the left, and clamped between the pushing block 7 and the left wall of the square groove, preventing the clamping block 6 from moving horizontally. At this time, the clamping block 6 is forced to rise upward by the cooperation of the clamping block 6, the pushing block 7 and the inclined surface of the square groove. The rising of the clamping block 6 makes the top surface of the clamping block 6 fit tightly against the inner top surface of the machine housing 1. Finally, the upper tightening bolt 82 is tightened, and the rod of the upper tightening bolt 82 extends into the machine housing 1. The rod of the upper tightening bolt 82 presses against the top surface of the clamping block 6, making it difficult for the seat 21 to move up and down inside the machine housing 1, further ensuring processing safety and crushing quality.

[0034] In this invention, guide protrusions 213 extending in the front and rear directions are respectively provided on the front and rear side walls of the seat 21. Limiting blocks 214 are fixed on the top surface of the guide protrusions 213. The distance between the two limiting blocks matches the inner diameter of the housing 1. Guide grooves for inserting and fixing the guide protrusions 213 are respectively provided on the front and rear side walls of the housing 1 at the two guide protrusions 213. That is, strip-shaped grooves 101 are provided on the right side walls of the front side plate 11 and the rear side plate 12. These strip-shaped grooves 101 are the guide grooves. The two guide protrusions 21... Limiting blocks 214 are fixed on the top surface of 3. Clamping plates (not shown in the figure) are protruding on the rear side of the front side plate 11 and the front side of the rear side plate 12, which are opposite to the limiting blocks 214. The two limiting blocks are clamped between the two clamping plates. During installation, the guide protrusion 213 and the guide groove can guide the installation of the seat 21 in the machine housing 1 and restrict the seat from moving up and down. Furthermore, the clamping of the two limiting blocks between the two clamping plates prevents the entire seat from moving back and forth in the machine housing, further ensuring the stable installation of the entire seat and improving production safety.

[0035] In this invention, two guide protrusions 213 are preferably provided on both the front and rear sides. The two guide protrusions 213 on the same side are arranged vertically at intervals, and two guide grooves are provided corresponding to the guide protrusions. The cooperation between the two guide protrusions on the front and rear sides and the guide grooves makes the installation of the base more stable.

[0036] In this invention, a baffle 9 is welded to the left side wall of the discharge port 100 and is horizontally arranged in the front-back direction to prevent EVA and rubber scrap particles from splashing out of the discharge port 100 in the opposite direction. The bottom surface of the baffle 9 is flush with the inner wall of the blade body 4. This baffle 9 can prevent the crushed material from splashing out of the discharge port 100.

[0037] In this invention, a rubber pad 400 is fixed on the upper right end face of the cylinder 13. The rubber pad 400 fits tightly against the left side face of the base 21. The rubber pad 400 can prevent the base 21 from being hammered into the housing 1 and causing a violent collision with the housing.

[0038] In this invention, the arc-shaped concave cavity has an opening (not shown in the figure) at the part that contacts the cutter body 4, which is connected to the cooling chamber. The cavity wall of the arc-shaped concave cavity is provided with a sealing element outside the opening, and the opening is within the range of the sealing element. The cavity wall of the arc-shaped concave cavity is sealed with the cutter body 4 through the sealing element. Specifically, the left side plate of the base 21 has a through opening, which can be one or more. This opening is the aforementioned opening. An O-ring is attached to the outside of the cavity wall of the arc-shaped concave cavity, and the opening is within the space of the O-ring. The cutter body 4 is sealed on the cavity wall of the arc-shaped concave cavity and locked to the arc-shaped concave cavity with bolts. At this time, the O-ring is squeezed and deformed, and clamped on the left side wall of the cutter body 4 and the base 21. This allows the liquid in the cooling chamber to flow from the opening to the cutter body 4 and, after contacting the cutter body 4, only stay within the range of the O-ring and no longer seep out of the cutter body 4. The use of the opening makes the cooling speed of the cutter body 4 faster and less prone to the problem of dead material. In this invention, the sealant can also be replaced by a ring of sealant.

[0039] In this invention, the front and rear sides of the seat 21 have a side air inlet gap with the inner wall of the arc-shaped hole, and the lower left side of the seat 21 has a lower air inlet gap with the lower right end face of the arc-shaped hole. By utilizing the side air inlet gaps, the lower air inlet gap, and the feed port, air can circulate between the seat 21 and the housing 1 on four sides, thereby continuously dissipating the heat generated by the operation of the grinding wheel and the cutter body, and further preventing the generation of dead material.

[0040] This embodiment and the accompanying drawings are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A grinding mill for crushing EVA and rubber scraps, comprising a cutter holder, a housing, and a grinding wheel. The cutter holder extends into the housing and is located outside one side of the grinding wheel. The grinding wheel is horizontally installed inside the housing, with the side of the grinding wheel where the cutter holder is located considered the right side, and the horizontal direction of the grinding wheel considered the front-to-back direction. The right side of the housing has an installation opening for the cutter holder to be inserted into it. The left side of the cutter holder has an arc-shaped cavity for a portion of the grinding wheel to be accommodated within it. A cutter body is installed within the arc-shaped cavity and fits snugly against it. The left side of the cutter body has a cutting groove. A crushing channel for raw materials to enter is formed between the cutter body and the outer wall of the grinding wheel. A feeding port is provided on the top surface of the housing. The top surface has a discharge port that communicates with both the feeding port and the crushing and processing channel. The left side of the casing has a discharge port that communicates with the crushing and processing channel. The cutter holder has a base and a mounting plate. The base is located inside the casing through the mounting port. The left side of the base has a recessed arc-shaped cavity. The left side of the top surface of the base has an opening that communicates with the arc-shaped cavity and extends to the outside of the left side of the base; this opening is the discharge port. The mounting plate is located outside the right side of the casing. The mounting plate is equipped with a translation pushing mechanism that pushes the base to reciprocate relative to the mounting plate, and a mounting structure for disassembling and fixing the mounting plate to the casing. Its features include: The above-mentioned cutting groove is provided with several grooves, and each cutting groove is arranged at intervals along the arc direction of the arc-shaped cavity. The cutting groove has a rear groove that extends downward and a front groove that is in front of the rear groove and extends in the front-back direction. The front groove and the rear groove are connected and set at an angle. The discharge port is within the range of the rear groove. The tool holder is provided with a cooling chamber located within the arc-shaped concave cavity. An inlet and a outlet connected to the cooling chamber are provided on the upper right side of the tool holder. The upper end of the aforementioned rear groove is located behind the lower end of the rear groove. The upper end of the rear groove extends to the rear edge of the cutter body. The lower end of the rear groove is connected to the rear end of the front groove. The front end of the front groove extends to the front edge of the cutter body.

2. The grinding mill for crushing EVA and rubber scraps according to claim 1, characterized in that: The aforementioned translational propulsion mechanism has a worm gear mechanism, which is mounted on a mounting plate. The worm gear mechanism has a worm wheel and a worm. The worm wheel is vertically arranged with its center line along the left-right direction. The worm is horizontally arranged along the front-back direction and located below the worm wheel. At the center of the worm wheel is a screw that is horizontally arranged along the left-right direction. The left end of the screw moves through the mounting plate into the seat and is screwed into the seat.

3. The grinding mill for crushing EVA and rubber scraps according to claim 2, characterized in that: The aforementioned worm gear mechanism also has a housing, in which the worm wheel and worm are rotatably mounted. The housing is locked to the aforementioned mounting plate. There are two worm gear mechanisms, which are arranged left and right at intervals. A connecting rod is provided between the two worm gear mechanisms. The two ends of the connecting rod extend into the housing of the two worm gear mechanisms and are fixedly connected to the worm. The end of the worm that is away from the connecting rod extends out of the housing. A rotating handwheel that drives the worm to rotate is fitted on the outside of one of the worms.

4. The grinding mill for crushing EVA and rubber scraps according to claim 1, characterized in that: A baffle plate is fixedly installed on the left side wall of the above-mentioned discharge port, which is horizontally arranged in the front-to-back direction to prevent EVA and rubber scrap particles from splashing out of the discharge port in the opposite direction.

5. The grinding mill for crushing EVA and rubber scraps according to claim 1, characterized in that: The aforementioned housing has a front side plate, a rear side plate, and a cylindrical body horizontally arranged between the front and rear side plates. An upper top plate is fixed to the upper right side of the front side plate and the upper right side of the rear side plate. An arc-shaped hole extending along the curvature of the cylindrical body is opened on the right side. The cylindrical body forms an upper right end face and a lower right end face at the arc-shaped hole. A strip-shaped through hole extending along the front-back direction is opened on the left side of the lower right end face. This strip-shaped through hole is the discharge port. There is a gap between the left side wall of the upper top plate and the upper right end face. This gap is the feeding port. The discharge port is located directly above the feeding port. A discharge hopper connected to the feeding port is installed on the top surface of the upper top plate. The aforementioned seat extends between the front and rear side plates and is located below the upper top plate. The left side of the seat is in contact with the upper right end face and the lower right end face. The aforementioned grinding wheel is located inside the cylindrical body.

6. The grinding mill for crushing EVA and rubber scraps according to claim 5, characterized in that: The front and rear ends of the aforementioned mounting plate have corresponding extension plates extending outwards to the right side of the front plate and the right side of the rear plate. Bolt holes are provided on the extension plates, and the front and rear plates have corresponding fixing holes for fixing the bolt holes. The extension plates, bolt holes, and fixing holes constitute the aforementioned mounting structure.

7. A grinding mill for crushing EVA and rubber scraps according to claim 5, characterized in that: The top surface of the aforementioned seat is recessed downwards with a square groove, which is located on the right side of the feed inlet. A clamping block and a pushing block are provided in the square groove, with the pushing block located on the right side of the clamping block. The left and right sides of the clamping block are inclined surfaces, forming a flared structure that gradually expands from bottom to top. The left inner wall of the square groove is a fitting inclined surface that fits tightly against the left side of the clamping block, and the left side of the pushing block is a fitting inclined surface that fits tightly against the right side of the clamping block. The right side of the pushing block is flush with the right inner wall of the square groove. A side-tightening bolt with one end extending into the square groove and the other end outside the right side of the seat is screwed onto the upper right side of the aforementioned seat. An upper-tightening bolt that passes through the upper top plate and extends toward the clamping block is screwed onto the aforementioned top plate.

8. A grinding mill for crushing EVA and rubber scraps according to claim 5, characterized in that: The front and rear side walls of the aforementioned seat are respectively provided with guide protrusions extending outward in the front-rear direction. The right side surface of the front side plate and the right side surface of the rear side plate are respectively provided with guide grooves that are recessed to the left for the guide protrusions to slide into. Limiting blocks are fixed on the top surfaces of the two guide protrusions. Clamping blocks that are opposite to the limiting blocks are provided on the rear side surface of the front side plate and the front side surface of the rear side plate. The two limiting blocks are clamped between the two clamping blocks.

9. A grinding mill for crushing EVA and rubber scraps according to claim 1, characterized in that: The aforementioned arc-shaped concave cavity has an opening at the part that contacts the blade body, which is connected to the cooling chamber. The cavity wall of the aforementioned arc-shaped concave cavity is provided with a sealing element outside the opening, and the opening is within the range of the sealing element. The cavity wall of the aforementioned arc-shaped concave cavity is sealed and fitted with the aforementioned blade body through the aforementioned sealing element.

10. A grinding mill for crushing EVA and rubber scraps according to claim 5, characterized in that: A rubber pad is fixed to the upper right end face of the aforementioned cylinder, and the rubber pad fits tightly against the left side face of the base; the front and rear sides of the aforementioned base have a side air inlet gap with the inner wall of the arc-shaped hole, and the lower left side face of the base has a bottom air inlet gap with the lower right end face of the arc-shaped hole.

11. A grinding mill for crushing EVA and rubber scraps according to claim 1, characterized in that: The angle between the aforementioned front groove and the aforementioned rear groove is greater than or equal to 90 degrees and less than 180 degrees.

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