Preparation process and preparation equipment of special medical rubber

Abstract

The application discloses a special medical rubber preparation process and preparation equipment, and relates to the technical field of special medical rubber preparation, which comprises a rack, the rack is hollow, an inlet hopper is fixed above the rack, and the bottom of the inlet hopper is communicated with the rack. The driving device and the baffle slidingly arranged below the guide plate are arranged, when the reciprocating screw rod is rotated to drive the screw block to move reciprocatingly, the baffle can be controlled to move reciprocatingly leftward and rightward synchronously, the rubber material retained on the baffle and the upper rotating crushing knife roller form continuous relative movement and periodic extrusion, dynamic grinding effect is generated, secondary crushing and grinding of the material are realized, the particles are refined, and the particle size uniformity is improved. The baffle moving reciprocatingly forms continuous scraping effect on the surface of the crushing knife roller through the material layer between the baffle and the crushing knife roller, the material adhered to the surface of the roller can be effectively removed, and the working efficiency of the crushing knife roller is ensured.

Description

Technical Field

[0001] This invention relates to the field of special medical rubber preparation technology, specifically a special medical rubber preparation process and preparation equipment. Background Technology

[0002] Medical rubber products are divided into two main categories based on their application scenarios: external use (such as medical tubing and rubber stoppers) and internal use (such as silicone rubber catheters and artificial organs). The main raw materials include natural rubber (NR), isoprene rubber (IIR), polyurethane (PU), and silicone rubber.

[0003] In the secondary processing of specialty medical rubber products, waste rubber products need to be crushed after recycling to serve as recycled raw materials in subsequent medical rubber production processes. Currently, the crushing equipment commonly used in the industry relies on the shearing action of crushing rollers to break down rubber materials. However, due to the high elastic modulus and toughness of waste rubber products, when shearing force is applied by the rollers, the rubber material often slips off the blades due to localized elastic deformation, making it difficult to achieve ideal instantaneous brittle fracture or complete cutting. This phenomenon results in a large number of torn, irregular rubber particles in the crushed product, rather than uniform granular fragments.

[0004] Due to their uneven size and irregular shape, these torn rubber materials are prone to accumulation and bridging in the screen area below the crushing rollers, thus clogging the screen holes. This not only significantly reduces the throughput of qualified materials but also causes continuous interference with normal material feeding. More seriously, the torn rubber material accumulated at the bottom of the screen continuously rubs and is squeezed by the high-speed rotating rollers during the crushing process, causing a rapid increase in local temperature and resulting in thermal softening or even localized viscous flow transformation of the rubber material surface. Under these conditions, the softened rubber material easily adheres to the roller and screen surfaces, gradually developing into typical faults such as "roller clogging" and "screen blockage," severely restricting the continuous operation stability and production efficiency of the crushing process and negatively impacting the quality consistency of subsequent recycled rubber materials. Summary of the Invention

[0005] The purpose of this invention is to provide a special medical rubber preparation process and preparation equipment to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a special medical rubber preparation device, comprising: a frame, wherein the frame is hollow and a feeding hopper is fixed on the top of the frame, and the bottom of the feeding hopper is connected to the frame; A base is fixed to the left side of the frame, and a drive motor is provided on the top of the base to provide power. The crushing blade roller is installed inside the frame. There are two sets of crushing blade rollers. The shafts of the two sets of crushing blade rollers pass through the frame and are rotatably connected to the frame. The shaft of the crushing blade roller located on the front side is connected to the drive motor. A sieve plate is disposed below the crushing roller and is used to sieve the crushed rubber. The sieve plate passes through the frame, and a guide plate is fixed on the inner wall of the frame. The sieve plate is slidably installed on the bottom of the guide plate. The drive unit, located on the left side and bottom of the frame, is used to drive the pocket plate to move and assist in grinding the rubber. The driving device includes: a reciprocating lead screw, which passes through the frame and is rotatably connected to the frame, and a lead screw slider is provided on the reciprocating lead screw; A connecting plate, one end of which is fixed to the outer wall of the lead screw slider, and the other end of which is fixed to the pocket plate.

[0007] According to the above technical solution, a transmission wheel is provided on the outer wall of the left end of the reciprocating screw. Two sets of transmission wheels are provided: one set is fixed to the reciprocating screw, and the other set is fixed to the connecting rod. The two sets of transmission wheels are connected by a belt drive. The connecting rod passes through and is fixedly connected to the pinion. The connecting rod is rotatably mounted on the left side of the partition. The partition is fixed to the inner wall of the frame. A large gear is rotatably mounted on the left side of the partition. The large gear meshes with the pinion. The large gear is passed through and fixedly connected to the shaft of the crushing roller, which is connected to the drive motor.

[0008] According to the above technical solution, the crushing roller is provided with two sets of mating gears. The two sets of mating gears are respectively penetrated by the two sets of crushing rollers and fixedly connected to the crushing rollers. The two sets of mating gears mesh with each other.

[0009] According to the above technical solution, two sets of scrapers are symmetrically fixed to the inner wall of the frame, and the bottom of the two sets of scrapers is consistent with the shape of the pocket plate.

[0010] According to the above technical solution, an air intake device is provided on the front and right side of the frame. The air intake device is used to quickly remove the heat of the material between the crushing roller and the chuck and to change the trajectory of the material falling. A cooling device is provided on the front of the frame, which is used in conjunction with the air intake device to cool the material.

[0011] According to the above technical solution, the air intake device includes: a blowing frame, the blowing frame passing through the right side of the frame and fixedly connected to the frame, and the blowing frame passing through the scraper located on the right side of the frame; A filter screen, fixed to the left side of the blowing frame, is used to block materials; The nozzle, one end of which is connected to and fixed to the right side of the blower frame; A fixed cylinder is fixed to the front of the frame by a bracket, and the other end of the nozzle is connected to the fixed cylinder. A piston plate is connected to the inner wall of the fixed cylinder.

[0012] According to the above technical solution, an exhaust one-way valve is provided at the position where the nozzle connects to the fixed cylinder, a crossbar is fixed on the left side of the piston plate, an L-shaped rod is fixed at the end of the crossbar away from the piston plate, the L-shaped rod passes through the front of the frame and is fixed to the outer wall of the lead screw slider, and an intake one-way valve is connected to the right side of the fixed cylinder.

[0013] According to the above technical solution, the cooling device includes: a water tank, which is fixed to the front of the frame, the interior of the water tank is filled with coolant, and the top of the water tank is provided with an openable screw cap; A semiconductor cooling chip is disposed on the inner wall of a water tank, and a PLC controller is disposed on the front of the water tank, the PLC controller being electrically connected to the semiconductor cooling chip; A coil, which passes through and is fixedly connected to the water tank, is connected to an air inlet check valve.

[0014] A process for preparing a special medical rubber, wherein the preparation equipment includes the following steps: S1. Start the drive motor and start the semiconductor cooling chip through the PLC controller to condense the coolant inside the water tank. At the same time, the drive motor drives a set of crushing rollers to rotate, and the two sets of crushing rollers rotate in opposite directions through two sets of gears. S2. The waste rubber products are fed into the feed hopper at the top of the frame. The waste rubber products are crushed and torn by the crushing roller and fall above the hopper. Materials of suitable particle size pass through the hopper for collection. S3. When the crushing roller rotates, the crushing roller drives the large gear to rotate synchronously. The large gear meshes with and drives the small gear to rotate. The small gear drives the connecting rod to rotate. The power is transmitted to the reciprocating screw through the transmission wheel and belt, thereby driving the screw slider and the pocket plate to achieve rapid reciprocating movement. The reciprocating motion of the pocket plate causes the rubber material stuck on it to form a continuous relative motion and periodic extrusion between it and the rotating crushing roller above, producing a dynamic grinding effect. S4. When the reciprocating lead screw rotates and drives the lead screw slider to slide back and forth, the lead screw slider drives the crossbar and piston plate to move back and forth synchronously in the fixed cylinder through the L-shaped rod. When the piston plate moves to the right, the gas in the fixed cylinder is forced into the nozzle through the exhaust one-way valve and sprayed out by the blower frame into the area between the baffle plate and the crushing roller.

[0015] S5. When the piston plate moves to the left to draw in gas, the exhaust check valve closes to prevent the gas inside the frame from being drawn in the opposite direction through the nozzle. The fixed cylinder can only draw in clean gas from the outside through the intake check valve. When the fixed cylinder draws in external gas through the intake check valve, the gas first enters the coil that runs through the water tank and is cooled by the coolant inside the water tank, so that the gas temperature entering the fixed cylinder is low, allowing the fixed cylinder to blow out low-temperature gas when blowing. S6. After the entire process is completed, turn off the drive motor and the semiconductor cooling chip to end the work.

[0016] Compared with the prior art, the present invention provides a special medical rubber preparation process and preparation equipment, which has the following beneficial effects: 1. This invention utilizes a drive device and a sliding baffle plate located below the guide plate. As the reciprocating screw drives the slider to reciprocate, the baffle plate moves synchronously left and right, creating continuous relative motion and periodic compression between the rubber material retained on the baffle plate and the rotating crushing roller above. This generates a dynamic grinding effect, achieving secondary crushing and grinding of the material, thereby refining particles and improving particle size uniformity. The reciprocating baffle plate, through the material layer between itself and the crushing roller, continuously scrapes the surface of the crushing roller, effectively removing rubber material adhering to the roller surface and ensuring the working efficiency of the crushing roller. Compared to conventional fixed screen structures, this design effectively avoids clogging problems caused by material accumulation and prevents the rubber material from softening due to prolonged localized friction and heat generation, thus avoiding faults such as "roller clogging" and "screen blockage," significantly improving production continuity and operational stability.

[0017] 2. This invention, through the installation of a drive device, enables the crushing roller to rotate when the drive motor drives it. The crushing roller then drives a large gear to rotate synchronously, which in turn drives a small gear to rotate. The difference in the number of teeth between the large and small gears forms an acceleration transmission mechanism, allowing the small gear to achieve a higher rotational speed than the crushing roller. The small gear drives a connecting rod to rotate, transmitting power to a reciprocating screw via a transmission wheel and belt. This drives the screw slider and the catch plate to achieve rapid reciprocating movement, ensuring that the movement frequency of the catch plate matches the crushing operation rhythm.

[0018] 3. This invention uses two sets of symmetrically arranged scrapers. During the left-right reciprocating sliding of the cup plate, the scrapers fixedly set on the inner wall of the frame can block and scrape off the material on the surface of the cup plate, preventing the material from accumulating in the connection gap between the cup plate and the frame, and avoiding the normal reciprocating movement of the cup plate due to material jamming.

[0019] 4. This invention, through its air intake device, continuously introduces airflow into the crushing area between the crushing roller and the baffle plate, promptly removing the heat generated by material friction and achieving air cooling. Simultaneously, with the reciprocating motion of the baffle plate, the airflow can propel large, uncrushed rubber particles upwards or towards the center of the crushing roller, causing them to re-enter the shearing and crushing zone. This achieves pneumatic return material circulation without additional mechanical parts, extending the residence time of large particles in the crushing chamber and improving the thoroughness of crushing, making it particularly suitable for processing high-toughness rubber.

[0020] 5. This invention, by setting up an air intake device and a cooling device, cools the gas blown between the baffle and the crushing roller, so that the low-temperature gas forces the rubber material in the crushing area to cool, significantly improving the heat dissipation effect and process stability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall front view of the present invention; Figure 2 This is a side view of the structure of the drive motor device of the present invention. Figure 3 This is a schematic diagram of the connection structure between the crushing roller and the matching gear of the present invention; Figure 4 This is a schematic diagram of the connection structure of the drive device, air intake device, cooling device and baffle plate of the present invention; Figure 5 This is a schematic diagram of the connection structure between the partial drive device and the baffle, air intake device and cooling device of the present invention. Figure 6 This is a schematic diagram of the connection structure between the air intake device and the cooling device of the present invention; Figure 7 This is a schematic cross-sectional view of the connection between the air intake device and the cooling device of the present invention; Figure 8 This is a cross-sectional view of the water tank structure of the present invention.

[0022] In the diagram: 1. Frame; 11. Feed hopper; 12. Scraper; 2. Drive unit; 21. Reciprocating screw; 22. Screw slider; 23. Connecting plate; 24. Transmission wheel; 25. Connecting rod; 26. Pinion; 27. Partition; 28. Large gear; 3. Air intake device; 31. Blowing frame; 32. Filter screen; 33. Nozzle; 34. Fixed cylinder; 35. Piston plate; 36. Air outlet check valve; 37. Crossbar; 38. L-shaped rod; 39. Air inlet check valve; 4. Cooling device; 41. Water tank; 42. Semiconductor cooling chip; 43. PLC controller; 44. Coil; 5. Base; 51. Drive motor; 6. Crushing roller; 61. Matching gear; 7. Drawer plate; 71. Guide plate. Detailed Implementation

[0023] Please see Figures 1-8 One embodiment of the present invention is: a special medical rubber preparation device, comprising: a frame 1, the frame 1 being hollow, and a feeding hopper 11 fixed above the frame 1, the bottom of the feeding hopper 11 being connected to the frame 1; The base 5 is fixed to the left side of the frame 1, and the top of the base 5 is equipped with a drive motor 51, which is used to provide power. The crushing roller 6 is installed inside the frame 1. There are two sets of crushing rollers 6. The shafts of the two sets of crushing rollers 6 pass through the frame 1 and are rotatably connected to the frame 1. The shaft of the crushing roller 6 located on the front side is connected to the drive motor 51. The squeegee 7 is located below the crushing roller 6 and is used to sieve the crushed rubber. The squeegee 7 passes through the frame 1. A guide plate 71 is fixed on the inner wall of the frame 1. The squeegee 7 is slidably installed at the bottom of the guide plate 71. The drive unit 2 is located on the left side and bottom of the frame 1 and is used to drive the pocket plate 7 to move to assist in grinding the rubber. The drive unit 2 includes: a reciprocating lead screw 21, a lead screw slider 22, a connecting plate 23, a transmission wheel 24, a connecting rod 25, a pinion 26, a partition 27, and a large gear 28; A reciprocating lead screw 21 passes through the frame 1 and is rotatably connected to it. A lead screw slider 22 is mounted on the reciprocating lead screw 21. One end of a connecting plate 23 is fixed to the outer wall of the lead screw slider 22, and the other end of the connecting plate 23 is fixed to a swivel plate 7. The swivel plate 7, located below the guide plate 71, drives the lead screw slider 22 to reciprocate as the reciprocating lead screw 21 rotates. The lead screw slider 22, via the connecting plate 23, drives the swivel plate 7 to slide horizontally back and forth along the bottom surface of the guide plate 71. When tearing rubber material is generated during the crushing process, the reciprocating motion of the swivel plate 7 causes continuous relative motion and periodic compression between the rubber material retained on it and the rotating crushing roller 6 above, generating a dynamic grinding effect. This achieves secondary crushing and grinding of the material, thereby refining the particles and improving particle size uniformity. Simultaneously, the reciprocating swivel plate 7, through the material layer between itself and the crushing roller 6, continuously scrapes the surface of the crushing roller 6, effectively removing the rubber material adhering to the roller surface and ensuring the working efficiency of the crushing roller 6. Compared to conventional fixed screen structures, this design can effectively avoid clogging problems caused by material accumulation and prevent the rubber material from softening due to prolonged local friction and heat generation. This avoids faults such as "roller clogging" and "screen blockage", significantly improving production continuity and operational stability.

[0024] A transmission wheel 24 is provided on the outer wall of the left end of the reciprocating screw 21. There are two sets of transmission wheels 24. One set of transmission wheels 24 is fixed to the reciprocating screw 21, and the other set of transmission wheels 24 is fixed to the connecting rod 25. The two sets of transmission wheels 24 are connected by belt drive. The connecting rod 25 passes through the pinion 26 and is fixedly connected to the pinion 26. The connecting rod 25 is rotatably mounted on the left side of the partition plate 27. The partition plate 27 is fixed on the inner wall of the frame 1. A large gear 28 is rotatably mounted on the left side of the partition plate 27. The large gear 28 meshes with the pinion 26. The large gear 28 is passed through the shaft of the crushing roller 6 connected to the drive motor 51 and is fixedly connected to the shaft of the crushing roller 6. When the drive motor 51 drives the crushing roller 6 to rotate, the crushing roller 6 drives the large gear 28 to rotate synchronously. The large gear 28 meshes with and drives the pinion 26 to rotate. The difference in the number of teeth between the large gear 28 and the pinion 26 forms an acceleration transmission mechanism, so that the pinion 26 obtains a speed higher than that of the crushing roller 6. The pinion 26 drives the connecting rod 25 to rotate, and the power is transmitted to the reciprocating lead screw 21 through the transmission wheel 24 and belt drive, thereby driving the lead screw slider 22 and the pocket plate 7 to achieve rapid reciprocating movement, ensuring that the movement frequency of the pocket plate 7 matches the rhythm of the crushing operation.

[0025] Two sets of shredding rollers 6 are equipped with two sets of mating gears 61. The two sets of mating gears 61 are respectively passed through and fixedly connected to the two sets of shredding rollers 6. The two sets of mating gears 61 mesh with each other. When the drive motor 51 drives one set of shredding rollers 6 to rotate, the shredding roller 6 transmits power synchronously to the other set of shredding rollers 6 through the two sets of meshing mating gears 61, so that the two sets of shredding rollers 6 rotate in opposite directions, thereby realizing the shearing and shredding of waste rubber falling between the two rollers.

[0026] Two sets of scrapers 12 are symmetrically fixed to the inner wall of the frame 1. The bottom of the two sets of scrapers 12 is consistent with the shape of the cup plate 7. During the reciprocating sliding of the cup plate 7, the scrapers 12 fixed to the inner wall of the frame 1 can block and scrape the material on the surface of the cup plate 7, preventing the material from accumulating in the connection gap between the cup plate 7 and the frame 1, and avoiding the normal reciprocating movement of the cup plate 7 due to material jamming.

[0027] In this embodiment, during operation: the drive motor 51 is started, which drives the crushing roller 6 to rotate. Under the action of two sets of cooperating gears 61, the two sets of crushing rollers 6 rotate towards each other, and the waste rubber products are fed into the feed hopper 11 at the top of the frame 1. After being crushed by the crushing roller 6, the material falls on the top of the hopper 7. Material that meets the particle size requirement is collected through the hopper 7. When the drive motor 51 drives the crushing roller 6 to rotate, the crushing roller 6 drives the large gear 28 to rotate synchronously. The large gear 28 meshes with and drives the small gear 26 to rotate. The difference in the number of teeth between the large gear 28 and the small gear 26 forms an acceleration transmission mechanism, so that the small gear 26 obtains a speed higher than that of the crushing roller 6. The pinion 26 drives the connecting rod 25 to rotate, and the power is transmitted to the reciprocating screw 21 through the transmission wheel 24 and belt drive, thereby driving the screw slider 22 and the chuck 7 to move back and forth quickly. The reciprocating motion of the chuck 7 causes the rubber material stuck on it to form a continuous relative motion and periodic extrusion between it and the rotating crushing roller 6 above, producing a dynamic grinding effect and realizing secondary crushing and grinding of the material.

[0028] During the reciprocating sliding of the cup plate 7, the scraper 12 fixedly installed on the inner wall of the frame 1 can block and scrape the material on the surface of the cup plate 7, preventing the material from accumulating in the connection gap between the cup plate 7 and the frame 1, and avoiding the normal reciprocating motion of the cup plate 7 due to material jamming.

[0029] Please see Figures 1-8 Based on the above embodiments, in another embodiment of the present invention, an air intake device 3 is provided on the front and right side of the frame 1. The air intake device 3 is used to quickly remove the heat of the material between the crushing roller 6 and the diaphragm 7 and change the trajectory of the material falling. A cooling device 4 is installed on the front of the frame 1. The cooling device 4 works in conjunction with the air intake device 3 to cool the material. Through the air intake device 3, airflow is continuously introduced into the crushing area between the crushing roller 6 and the baffle plate 7 to remove the heat generated by the friction of the material, achieving air cooling. At the same time, with the reciprocating motion of the baffle plate 7, the airflow can throw large rubber particles that are about to fall but have not been fully crushed upwards or towards the center area of ​​the crushing roller 6, causing them to re-enter the shearing and crushing zone. This achieves pneumatic return material circulation without additional mechanical parts, prolonging the residence time of large particles in the crushing chamber and improving the thoroughness of crushing, which is especially suitable for processing high-toughness rubber. The cooling device 4 can pre-cool the airflow introduced by the air intake device 3, further reducing the temperature of the gas blown into the crushing zone, thereby enhancing the cooling effect.

[0030] The air intake device 3 includes: a blower 31, a filter screen 32, a nozzle 33, a fixed cylinder 34, a piston plate 35, an exhaust check valve 36, a crossbar 37, an L-shaped rod 38, and an intake check valve 39. The blowing frame 31 passes through the right side of the frame 1 and is fixedly connected to the frame 1. The blowing frame 31 passes through the scraper 12 on the right side of the frame 1. The filter screen 32 is fixed on the left side of the blowing frame 31 to block the material. One end of the nozzle 33 is connected to and fixed to the right side of the blowing frame 31. The fixed cylinder 34 is fixed to the front of the frame 1 by a bracket. The other end of the nozzle 33 is connected to the fixed cylinder 34. The piston plate 35 is connected to the inner wall of the fixed cylinder 34. When the piston plate 35 moves back and forth along the inner wall of the fixed cylinder 34, the piston plate 35 pushes the gas in the fixed cylinder 34 into the blowing frame 31 through the nozzle 33, and then sprays it out from the blowing frame 31 to the area between the baffle plate 7 and the crushing roller 6. The airflow acts directly on the surface of the material, quickly carrying away the heat generated by friction and achieving effective cooling. At the same time, the airflow can throw large rubber particles that are about to fall but have not been fully crushed upwards or toward the center area of ​​the crushing roller 6, so that they re-enter the shearing and crushing zone, achieving pneumatic return of material without additional mechanical parts, extending the residence time of large particles in the cavity, and improving the crushing effect. It is especially suitable for crushing high-toughness rubber.

[0031] An exhaust check valve 36 is provided at the connection between the nozzle 33 and the fixed cylinder 34. A crossbar 37 is fixed to the left side of the piston plate 35. An L-shaped rod 38 is fixed to the end of the crossbar 37 away from the piston plate 35. The L-shaped rod 38 passes through the front of the frame 1 and is fixed to the outer wall of the lead screw slider 22. An intake check valve 39 is connected to the right side of the fixed cylinder 34. When the reciprocating lead screw 21 rotates and drives the lead screw slider 22 to slide back and forth, the lead screw slider 22 drives the crossbar 37 and the piston plate 35 to move back and forth synchronously in the fixed cylinder 34 through the L-shaped rod 38. When the piston plate 35 moves to the right, the gas in the fixed cylinder 34 is forced into the nozzle 33 through the outlet check valve 36; when the piston plate 35 moves to the left to draw in gas, the outlet check valve 36 closes to prevent the gas inside the frame 1 from being drawn in reverse through the nozzle 33, thus avoiding dust from entering the gas path. The fixed cylinder 34 can only draw in clean gas from the outside through the inlet check valve 39, thus realizing one-way air intake and air supply cycle.

[0032] Cooling device 4 includes: water tank 41, semiconductor cooling chip 42, PLC controller 43, and coil 44; A water tank 41 is fixed to the front of the frame 1. The water tank 41 is filled with coolant and has an openable cap on top. A thermoelectric cooler 42 is mounted on the inner wall of the water tank 41. A PLC controller 43 is mounted on the front of the water tank 41 and is electrically connected to the thermoelectric cooler 42. A coil 44 passes through the water tank 41 and is fixedly connected to it. The coil 44 is connected to an inlet check valve 39. When the fixed cylinder 34 draws in external gas through the inlet check valve 39, the gas first enters the coil 44 that passes through the water tank 41. The PLC controller 43 activates the thermoelectric cooler 42 to actively cool the coolant in the water tank 41, and the coolant then exchanges heat with and cools the gas in the coil 44. The coil 44 employs an extended pipeline design to increase the heat exchange distance and time of the gas within the water tank 41, ensuring that the gas is adequately cooled. The cooled gas enters the fixed cylinder 34, and then is blown into the machine frame 1 through the outlet one-way valve 36, the nozzle 33 and the blowing frame 31. The low-temperature airflow forces the rubber material in the crushing area to cool down, which significantly improves the heat dissipation effect and process stability.

[0033] In this embodiment, during operation: as the reciprocating screw 21 rotates, driving the screw slider 22 to reciprocate, the screw slider 22, via the L-shaped rod 38, drives the crossbar 37 and piston plate 35 to move synchronously back and forth within the fixed cylinder 34. When the piston plate 35 moves to the right, the gas inside the fixed cylinder 34 is forced into the nozzle 33 through the exhaust check valve 36 and sprayed out by the blower frame 31 into the area between the baffle plate 7 and the crushing roller 6. The airflow directly acts on the material surface, quickly carrying away the heat generated by friction, achieving effective cooling.

[0034] When the piston plate 35 moves to the left to draw in gas, the exhaust check valve 36 closes to prevent reverse suction of gas from the inside of the frame 1 through the nozzle 33, thus avoiding dust entering the gas path. The fixed cylinder 34 can only draw in clean gas from the outside through the intake check valve 39. The gas first enters the coil 44 that runs through the water tank 41. The PLC controller 43 activates the semiconductor cooling chip 42 to actively cool the coolant in the water tank 41, and the coolant then exchanges heat with and cools the gas in the coil 44. The coil 44 adopts an extended pipeline design to increase the heat exchange stroke and time of the gas in the water tank 41, ensuring that the gas is fully cooled. The cooled gas enters the fixed cylinder 34, and then is blown into the inside of the frame 1 through the exhaust check valve 36, nozzle 33, and blowing frame 31, where the low-temperature airflow forces cooling of the rubber material in the crushing area.

[0035] A special medical rubber preparation process, the preparation equipment of which includes the following steps: S1. Start the drive motor 51 and start the semiconductor cooling chip 42 through the PLC controller 43 to condense the coolant inside the water tank 41. At the same time, the drive motor 51 drives a set of crushing rollers 6 to rotate, and the two sets of crushing rollers 6 are controlled to rotate in opposite directions through two sets of cooperating gears 61. S2. Waste rubber products are fed into the feed hopper 11 at the top of the frame 1. The waste rubber products are crushed and torn by the crushing roller 6 and fall above the hopper 7. Materials of suitable particle size pass through the hopper 7 for collection. S3. When the crushing roller 6 rotates, the crushing roller 6 drives the large gear 28 to rotate synchronously. The large gear 28 meshes with and drives the small gear 26 to rotate. The small gear 26 drives the connecting rod 25 to rotate. The power is transmitted to the reciprocating screw 21 through the transmission wheel 24 and belt drive, thereby driving the screw slider 22 and the pocket plate 7 to achieve rapid reciprocating movement. The reciprocating motion of the pocket plate 7 causes the rubber material stuck on it to form a continuous relative motion and periodic extrusion between it and the rotating crushing roller 6 above, producing a dynamic grinding effect. S4. When the reciprocating screw 21 rotates and drives the screw slider 22 to slide back and forth, the screw slider 22 drives the crossbar 37 and piston plate 35 to move synchronously back and forth in the fixed cylinder 34 through the L-shaped rod 38. When the piston plate 35 moves to the right, the gas in the fixed cylinder 34 is forced into the nozzle 33 through the exhaust one-way valve 36, and is sprayed out by the blower 31 into the area between the baffle plate 7 and the crushing roller 6.

[0036] S5. When the piston plate 35 moves to the left to draw in gas, the outlet check valve 36 closes to prevent the gas inside the frame 1 from being drawn in the opposite direction through the nozzle 33. The fixed cylinder 34 can only draw in clean gas from the outside through the inlet check valve 39. When the fixed cylinder 34 draws in external gas through the inlet check valve 39, the gas first enters the coil 44 that passes through the water tank 41 and is cooled by the coolant inside the water tank 41, so that the gas temperature entering the fixed cylinder 34 is low, and the fixed cylinder 34 can blow out low-temperature gas when blowing. S6. After the entire process is completed, turn off the drive motor 51 and the semiconductor cooling chip 42 to end the work.

[0037] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A special medical rubber preparation device, characterized in that, include: The frame (1) is hollow, and a feeding hopper (11) is fixed on the top of the frame (1). The bottom of the feeding hopper (11) is connected to the frame (1). The base (5) is fixed on the left side of the frame (1), and a drive motor (51) is provided on the top of the base (5) to provide power; Crushing roller (6), the crushing roller (6) is set inside the frame (1), the crushing roller (6) is provided in two sets, the shafts of the two sets of crushing rollers (6) pass through the frame (1) and are rotatably connected to the frame (1), the shaft of the crushing roller (6) located on the front side is connected to the drive motor (51); The sieve (7) is located below the crushing roller (6) and is used to sieve the crushed rubber. The sieve (7) passes through the frame (1). A guide plate (71) is fixed on the inner wall of the frame (1). The sieve (7) is slidably installed on the bottom of the guide plate (71). The drive unit (2) is located on the left side and bottom of the frame (1) and is used to drive the pocket plate (7) to move to assist in grinding the rubber. The driving device (2) includes: a reciprocating lead screw (21), which passes through the frame (1) and is rotatably connected to the frame (1), and a lead screw slider (22) is provided on the reciprocating lead screw (21). Connecting plate (23), one end of which is fixed to the outer wall of lead screw slider (22), and the other end of which is fixed to pocket plate (7).

2. The special medical rubber preparation equipment according to claim 1, characterized in that: A transmission wheel (24) is provided on the outer wall of the left end of the reciprocating screw (21). There are two sets of transmission wheels (24). One set of transmission wheels (24) is fixed to the reciprocating screw (21), and the other set of transmission wheels (24) is fixed to the connecting rod (25). The two sets of transmission wheels (24) are connected by belt drive. The connecting rod (25) passes through the pinion (26) and is fixedly connected to the pinion (26). The connecting rod (25) is rotatably mounted on the left side of the partition (27). The partition (27) is fixed on the inner wall of the frame (1). A large gear (28) is rotatably mounted on the left side of the partition (27). The large gear (28) meshes with the pinion (26). The large gear (28) is passed through the shaft of the crushing roller (6) connected to the drive motor (51) and is fixedly connected to the shaft of the crushing roller (6).

3. The special medical rubber preparation equipment according to claim 1, characterized in that: Two sets of mating gears (61) are provided on the two sets of crushing rollers (6). The two sets of mating gears (61) are respectively penetrated by the two sets of crushing rollers (6) and fixedly connected to the crushing rollers (6). The two sets of mating gears (61) mesh with each other.

4. The special medical rubber preparation equipment according to claim 1, characterized in that: The inner wall of the frame (1) is fixed with two sets of scrapers (12) symmetrically fixed, and the bottom of the two sets of scrapers (12) is consistent with the shape of the pocket plate (7).

5. The special medical rubber preparation equipment according to claim 4, characterized in that: An air intake device (3) is provided on the front and right side of the frame (1). The air intake device (3) is used to quickly remove the heat of the material between the crushing roller (6) and the diaphragm (7) and change the trajectory of the material falling. A cooling device (4) is provided on the front of the frame (1), and the cooling device (4) is used to cool the material in conjunction with the air intake device (3).

6. The special medical rubber preparation equipment according to claim 5, characterized in that: The air intake device (3) includes: a blower (31), which passes through the right side of the frame (1) and is fixedly connected to the frame (1), and the blower (31) passes through the scraper (12) located on the right side of the frame (1). A filter screen (32) is fixed to the left side of the blower (31) and is used to block the material. The nozzle (33) is connected to and fixed to the right side of the blower (31); The fixed cylinder (34) is fixed to the front of the frame (1) by a bracket. The other end of the nozzle (33) is connected to the fixed cylinder (34). The inner wall of the fixed cylinder (34) is connected to a piston plate (35).

7. The special medical rubber preparation equipment according to claim 6, characterized in that: An exhaust check valve (36) is provided at the connection between the nozzle (33) and the fixed cylinder (34). A crossbar (37) is fixed on the left side of the piston plate (35). An L-shaped rod (38) is fixed at the end of the crossbar (37) away from the piston plate (35). The L-shaped rod (38) passes through the front of the frame (1) and is fixed to the outer wall of the lead screw slider (22). An intake check valve (39) is connected to the right side of the fixed cylinder (34).

8. The special medical rubber preparation equipment according to claim 7, characterized in that: The cooling device (4) includes: a water tank (41), which is fixed to the front of the frame (1), the interior of the water tank (41) is filled with coolant, and the top of the water tank (41) is provided with an openable screw cap; A semiconductor cooling chip (42) is disposed on the inner wall of a water tank (41). A PLC controller (43) is disposed on the front of the water tank (41). The PLC controller (43) is electrically connected to the semiconductor cooling chip (42). The coil (44) passes through the water tank (41) and is fixedly connected to the water tank (41). The coil (44) is connected to the air inlet check valve (39).

9. A process for preparing special medical rubber, characterized in that: The preparation process of the preparation equipment according to any one of claims 1-8 includes the following steps: S1. Start the drive motor (51) and start the semiconductor cooling chip (42) through the PLC controller (43) to condense the coolant inside the water tank (41). At the same time, the drive motor (51) drives a set of crushing rollers (6) to rotate. The two sets of crushing rollers (6) are controlled to rotate in opposite directions by two sets of cooperating gears (61). S2. The waste rubber products are fed into the feed hopper (11) at the top of the frame (1). The waste rubber products are crushed and torn by the crushing roller (6) and fall above the hopper (7). The material with a suitable particle size passes through the hopper (7) for collection. S3. When the crushing roller (6) rotates, the crushing roller (6) drives the large gear (28) to rotate synchronously. The large gear (28) meshes and drives the small gear (26) to rotate. The small gear (26) drives the connecting rod (25) to rotate. The power is transmitted to the reciprocating screw (21) through the transmission wheel (24) and belt drive, thereby driving the screw slider (22) and the pocket plate (7) to achieve rapid reciprocating movement. The reciprocating motion of the pocket plate (7) causes the rubber material stuck on it to form a continuous relative motion and periodic extrusion between it and the rotating crushing roller (6) above, producing a dynamic grinding effect. S4. When the reciprocating screw (21) rotates and drives the screw slider (22) to slide back and forth, the screw slider (22) drives the crossbar (37) and piston plate (35) to move back and forth synchronously in the fixed cylinder (34) through the L-shaped rod (38). When the piston plate (35) moves to the right, the gas in the fixed cylinder (34) is forced into the nozzle (33) through the exhaust one-way valve (36) and sprayed out by the blower (31) to the area between the baffle plate (7) and the crushing roller (6). 10.S5 When the piston plate (35) moves to the left to draw in gas, the exhaust check valve (36) closes to prevent the reverse drawing of gas inside the frame (1) through the nozzle (33). The fixed cylinder (34) can only draw in clean gas from the outside through the intake check valve (39). When the fixed cylinder (34) draws in external gas through the intake check valve (39), the gas first enters the coil (44) that runs through the water tank (41) and is cooled by the coolant inside the water tank (41), so that the gas temperature entering the fixed cylinder (34) is low, so that the fixed cylinder (34) can blow out low-temperature gas when blowing. S6. After the processing is completely completed, turn off the drive motor (51) and the semiconductor cooling chip (42) to end the work.

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