Environment-friendly and efficient polyvinyl chloride particle crushing equipment

Abstract

The invention provides environment-friendly and efficient polyvinyl chloride particle crushing equipment, and relates to the field of plastic processing equipment. Dust removal fans are installed on the left and right sides of the top of the equipment body, an occlusion roller and a groove roller are rotationally connected to the left and right sides in the equipment body correspondingly, a transmission shaft is transversely and rotationally connected to the top of the front side of the equipment body, and a driving motor is fixedly installed in the middle of the rear side wall of the equipment body; the bottom of an inner cavity of the equipment body is rotationally connected with a grinding and smashing disc, and the top of the grinding and smashing disc is cooperatively provided with a pressure distributing and smashing disc. Dust removal fans are installed on the left side wall and the right side wall of a feeding port, a protective net, a dust collection pipe and a cloth bag are arranged, raised dust can be collected in a centralized mode, the situation that the dust drifts to the air is greatly reduced, a clean and healthy working environment is created for operators, the environment protection concept is met, and harm of dust pollution to the environment and the human body is reduced; the problems of dust flying and low efficient particle crushing efficiency during polyvinyl chloride crushing are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic processing equipment, and particularly relates to an environmentally friendly and efficient PVC particle crushing equipment. Background Art

[0002] In the field of cable material particle production, PVC has become an indispensable basic raw material due to its excellent electrical insulation performance, good flexibility, and high cost performance. However, during the cable manufacturing process, various PVC wastes are often generated, and these wastes need to be effectively recycled and crushed to be re-input into the production process of cable material particles to achieve the recycling of resources.

[0003] Based on the above, the existing PVC particle crushing equipment has the following deficiencies: When crushing the PVC waste of cable materials, there are defects in the dust-proof design of the feeding port, which causes a large amount of dust to overflow wantonly during the feeding process of the waste. For large-particle wastes, there is a lack of effective preliminary crushing means, and it is difficult to quickly process them into a particle size suitable for subsequent fine crushing, which becomes a major obstacle to improving the crushing efficiency. In the material conveying link, the conveying is often stuck and not smooth, and the power distribution is also unreasonable, resulting in the inability of each operation link of the equipment to operate synergistically and efficiently. When entering the fine crushing stage, both the grinding method and the discharging mechanism are not in an optimized state, and material blockage is very likely to occur, greatly reducing the feeding efficiency, and then resulting in the long-term low overall crushing efficiency and being unable to meet the production requirements. Summary of the Invention

[0004] An embodiment of the present disclosure relates to an environmentally friendly and efficient PVC particle crushing equipment, which installs dust removal fans on the left and right side walls of the feeding port, and is equipped with a protective net, a dust collection pipe, and a cloth bag. During the feeding process of the material, it effectively prevents the PVC particles from splashing, and at the same time centrally collects the raised dust, greatly reducing the dispersion of dust into the air, creating a clean and healthy working environment for the operators, conforming to the environmental protection concept, and reducing the harm of dust pollution to the environment and the human body.

[0005] In the first aspect of the present disclosure, an environmentally friendly and efficient PVC particle crushing device is provided, specifically including: a device main body; dust removal fans are installed on the left and right sides of the top of the device main body, dust collection pipes are fixedly connected to the left and right outer sides of the top of the device main body, a biting roller and a groove roller are respectively rotatably connected to the left and right sides inside the device main body, a transmission shaft is horizontally rotatably connected to the top of the front side of the device main body, the bottom of the middle of the transmission shaft is drivingly connected to the upper end of a synchronous rod, a driving motor is fixedly installed at the middle of the rear side wall of the device main body, a synchronous shaft is rotatably connected to the bottom of the front side wall of the device main body, a grinding and crushing disc is rotatably connected to the bottom of the inner cavity of the device main body, a pressure matching crushing disc is fitted and installed on the top of the grinding and crushing disc, the front end of the driving shaft of the driving motor is fixedly connected to a centralized conveying shaft, and bottom support seats are provided on the front and rear sides of the bottom of the device main body.

[0006] Further, a trapezoidal inverted feeding port is opened at the top of the device main body. Four circular mounting holes are equidistantly opened in the left and right side walls of the feeding port. Dust removal fans are fixedly installed in the mounting holes. A fine mesh protective net is installed on the side of the dust removal fan facing the feeding port. Dust collection pipes are connected to the outer side walls of the feeding port corresponding to the mounting holes. The bottoms of the dust collection pipes are connected together and a cloth bag is installed.

[0007] Further, the bottom of the feeding port of the device main body is a rough crushing cavity. A circular communication pipe extends into the fine crushing cavity at the bottom of the rough crushing cavity. A pressure matching crushing disc is slidably connected to the outer side wall of the communication pipe. Leakage blocking and discharging brushes are fixedly installed on the rough crushing cavities on the left and right sides at the bottom of the feeding port. The leakage blocking and discharging brushes are respectively in contact with the outer walls of the biting roller and the groove roller.

[0008] Further, the biting roller and the groove roller are both rotatably connected to the middle of the rough crushing cavity of the device main body. Transmission worm wheels are fixedly connected to the front ends of the biting roller and the groove roller. Transmission worm gears symmetrically installed on the left and right sides of the transmission shaft are meshed with the bottoms of the transmission worm wheels. Protrusions are equidistantly arranged on the outer side wall of the biting roller. Grooves are equidistantly opened on the outer side wall of the groove roller and are matched with the protrusions on the biting roller. Through grooves are equidistantly opened in the grooves on the outer side wall of the groove roller.

[0009] Further, transmission bevel gear sets are installed at the upper and lower ends of the synchronous rod respectively. The transmission bevel gear set is composed of two bevel gears that are vertically meshed. The transmission bevel gear set at the lower end of the synchronous rod is connected to the front end of the centralized conveying shaft.

[0010] Further, the centralized conveying shaft is rotatably connected to the bottom of the rough crushing cavity of the device main body. Two symmetrical spiral blades are provided on the outer side wall of the centralized conveying shaft. A main transmission gear is fixedly connected to the front end of the centralized conveying shaft. The main transmission gear is drivingly connected to the auxiliary transmission gear at the front end of the synchronous shaft through a transmission belt. A transmission bevel gear set is fixedly connected to the rear end of the synchronous shaft.

[0011] Furthermore, a grinding and crushing disk is rotatably connected to the bottom of the fine grinding chamber of the equipment body, and the middle of the bottom of the grinding and crushing disk is connected to the transmission bevel gear set connected to the rear end of the synchronous shaft. A particle aggregation groove is provided on the top of the outer wall of the grinding and crushing disk, and the cross-section of the particle aggregation groove is "U" and surrounds the outer side of the grinding and crushing disk. A material collection scraper is provided on the left and right side walls inside the fine grinding chamber of the equipment body, and the material collection scraper is slidably connected in the particle collection groove. A through groove is provided on the material collection scraper corresponding to the rotation direction of the grinding and crushing disk, and a discharge port is fixedly connected to the outer side of the material collection scraper, and a spiral conveying shaft is fixedly installed in the middle of the top of the grinding and crushing disk, and the spiral conveying shaft is rotatably connected to the connecting pipe connected to the bottom of the coarse grinding chamber inside the equipment body.

[0012] Furthermore, the connection between the bottom of the pressure-matching crushing disk and the top of the grinding crushing disk are both rough surfaces, and two guide slide rods are symmetrically provided on the top of the pressure-matching crushing disk. The top of the guide slide rod is slidably connected to the top end surface of the fine crushing chamber of the equipment body, and the outer side of the guide slide rod is sleeved with a support spring.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By installing dust removal fans on the left and right side walls of the feed port and equipping them with protective nets, dust collection pipes and bags, the raised dust can be collected centrally during the material feeding process, greatly reducing the dispersion of dust into the air, creating a clean and healthy working environment for operators, complying with environmental protection concepts, and reducing the harm of dust pollution to the environment and human body.

[0014] 2. Through the cooperation between the interlocking roller and the groove roller in the coarse crushing chamber, the large particles are initially crushed, laying the foundation for the subsequent fine crushing and improving the overall crushing efficiency. The centralized conveying shaft realizes efficient material transportation through the spiral blades. The synchronous shaft and a series of transmission components reasonably distribute power to ensure the orderly operation of all links of the equipment. In the fine crushing chamber, the rough surface of the grinding and crushing disc and the pressure-matching crushing disc cooperate to further grind the material. The particle gathering trough, the material scraper and the discharge port work together to ensure the smooth discharge of the crushed particles. The spiral conveying shaft avoids material blockage, improves the material distribution efficiency, and guarantees efficient crushing operations in all aspects.

[0015] 3. The plugging and brushing at the bottom of the feed port cleans the bite roller and groove roller to reduce debris residue and extend the service life of the equipment. The support spring of the pressure crushing disc can adaptively adjust the pressure to ensure the crushing effect and avoid damage to the equipment due to abnormal pressure, thereby maintaining stable equipment performance and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0017] The accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0018] In the drawings: Figure 1 is a schematic perspective view of the right front side of the PVC particle crushing equipment according to an embodiment of the present invention.

[0019] Figure 2 is a schematic exploded view of the PVC particle crushing equipment according to an embodiment of the present invention.

[0020] Figure 3 is a schematic perspective view of the centralized conveying shaft of the PVC particle crushing equipment according to an embodiment of the present invention.

[0021] Figure 4 is a schematic longitudinal sectional view of the equipment main body of the PVC particle crushing equipment according to an embodiment of the present invention.

[0022] Figure 5 is a schematic transverse sectional view of the equipment main body of the PVC particle crushing equipment according to an embodiment of the present invention.

[0023] Figure 6 is a schematic view of the internal structure of the equipment main body of the PVC particle crushing equipment according to an embodiment of the present invention.

[0024] Figure 7 is a schematic sectional view of the pressure matching crushing disc of the PVC particle crushing equipment according to an embodiment of the present invention.

[0025] Figure 8 is a schematic sectional view of the grinding crushing disc and the pressure matching crushing disc of the PVC particle crushing equipment according to an embodiment of the present invention.

[0026] List of reference numerals 1. Equipment main body; 101. Feed inlet; 102. Installation hole position; 103. Coarse crushing chamber; 10301. Connecting pipe; 10302. Leakage plugging and discharging brush; 104. Fine crushing chamber; 10401. Material taking scraper; 10402. Discharge port; 105. Bottom support seat; 2. Dust removal fan; 201. Protective net; 3. Dust collecting pipe; 4. Biting roller; 5. Driving worm gear; 6. Grooved roller; 7. Transmission shaft; 701. Driving worm; 8. Transmission bevel gear set; 9. Centralized conveying shaft; 901. Main driving gear; 10. Driving motor; 11. Transmission belt; 12. Synchronous shaft; 1201. Sub-driving gear; 13. Grinding crushing disc; 1301. Particle aggregation groove; 1302. Spiral conveying shaft; 14. Pressure matching crushing disc; 1401. Guide slide bar; 1402. Support spring; 15. Synchronous rod. Detailed implementation manners

[0027] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0028] Example 1: Please refer to Figures 1 to 8 As shown: The present invention provides an environmentally friendly and efficient polyvinyl chloride particle crushing device, comprising a device body 1, dust removal fans 2 are installed on the left and right sides of the top of the device body 1, dust collecting pipes 3 are fixedly connected to the left and right outer sides of the top of the device body 1, and the left and right sides of the inside of the device body 1 are respectively rotatably connected to a bite roller 4 and a groove roller 6, a transmission shaft 7 is laterally rotatably connected to the top of the front side of the device body 1, and the bottom of the middle of the transmission shaft 7 is transmission-connected to the upper end of a synchronization rod 15, a driving motor 10 is fixedly installed at the middle of the rear side wall of the device body 1, a synchronization shaft 12 is rotatably connected to the bottom of the front side wall of the device body 1, a grinding and crushing disc 13 is rotatably connected to the bottom of the inner cavity of the device body 1, a pressure-matching crushing disc 14 is matched and installed on the top of the grinding and crushing disc 13, a centralized conveying shaft 9 is fixedly connected to the front end of the driving shaft of the driving motor 10, and a bottom support seat 105 is provided on the front and back sides of the bottom of the device body 1.

[0029] Among them, an inverted trapezoidal feed port 101 is opened on the top of the equipment body 1, and four circular mounting holes 102 are opened at equal distances in the left and right side walls of the feed port 101. A dust removal fan 2 is fixedly installed in the mounting hole 102, and a fine mesh protective net 201 is installed on the side of the dust removal fan 2 facing the feed port 101. The outer side walls of the feed port 101 corresponding to the mounting holes 102 are connected with dust collecting pipes 3, and the bottoms of the dust collecting pipes 3 are connected together and installed with cloth bags.

[0030] By adopting the above technical solution, a dust removal fan 2 is installed on the left and right side walls of the feed port 101, and a protective net 201 is provided on the side of the fan facing the feed port 101, which can effectively prevent polyvinyl chloride particles from splashing out of the feed port 101 during the feeding process. At the same time, the raised dust can be blown to the dust collecting pipe 3, and a cloth bag is connected to the bottom of the dust collecting pipe 3 to realize centralized collection of dust and prevent dust from drifting into the air, thereby achieving a good dust removal effect and ensuring the cleanliness of the working environment and the health of the operators.

[0031] Among them, the bottom of the feed port 101 of the equipment body 1 is a coarse grinding chamber 103, and the bottom of the coarse grinding chamber 103 is provided with a circular connecting pipe 10301 extending into the fine grinding chamber 104 at the bottom of the coarse grinding chamber 103, and the outer wall of the connecting pipe 10301 is slidably connected with a pressure-matching crushing disk 14, and the coarse grinding chamber 103 on the left and right sides of the bottom of the feed port 101 is fixedly installed with plugging brushes 10302, which are in contact with the outer walls of the intermeshing roller 4 and the groove roller 6 respectively.

[0032] Among them, the biting roller 4 and the groove roller 6 are rotatably connected in the middle of the coarse crushing chamber 103 of the equipment body 1, and the front ends of the biting roller 4 and the groove roller 6 are fixedly connected with the transmission worm gear 5, and the transmission worm 701 symmetrically installed on the left and right sides of the transmission shaft 7 is meshed with the bottom of the transmission worm gear 5. The outer wall of the biting roller 4 is provided with protrusions at equal distances, and the outer wall of the groove roller 6 is provided with grooves at medium distances to match the protrusions on the biting roller 4, and the grooves on the outer wall of the groove roller 6 are provided with through grooves at equal distances.

[0033] The upper and lower ends of the synchronization rod 15 are respectively provided with transmission bevel gear sets 8 , which are composed of two vertically meshing bevel gears. The transmission bevel gear set 8 at the lower end of the synchronization rod 15 is connected to the front end of the centralized conveying shaft 9 .

[0034] Among them, the centralized conveying shaft 9 is rotatably connected to the bottom of the coarse crushing chamber 103 of the equipment body 1, and two symmetrical spiral blades are provided on the outer wall of the centralized conveying shaft 9. The front end of the centralized conveying shaft 9 is fixedly connected to the main transmission gear 901, and the main transmission gear 901 is connected to the auxiliary transmission gear 1201 at the front end of the synchronous shaft 12 through the transmission belt 11, and the rear end of the synchronous shaft 12 is fixedly connected to the transmission bevel gear set 8.

[0035] With the above technical solution, by arranging the biting roller 4 and the grooved roller 6 in the coarse crushing chamber 103, the protrusions on the outer side wall of the biting roller 4 cooperate with the grooves on the outer side wall of the grooved roller 6. When the transmission worm 701 driven by the transmission shaft 7 meshes with the transmission worm wheel 5 and the biting roller 4 and the grooved roller 6 rotate relative to each other, the PVC waste falling into the coarse crushing chamber 103 can be initially coarsely crushed, and the materials with larger particles are initially broken into smaller particles. The through grooves on the grooved roller 6 are beneficial to the discharge of the crushed materials, preparing for the subsequent fine crushing process, improving the overall crushing efficiency. And through the transmission bevel gear sets 8 installed at the upper and lower ends of the synchronous rod 15, the power transmission between the centralized conveying shaft 9 and the transmission shaft 7 is realized, so as to control the rotation of the biting roller 4 and the grooved roller 6 through the transmission shaft 7. And by arranging symmetric spiral blades on the outer side wall of the centralized conveying shaft 9, the coarsely crushed materials can be conveyed along the centralized conveying shaft 9 to the middle of the bottom of the coarse crushing chamber 103 and enter the grinding and crushing disc 13 rotatably connected in the fine crushing chamber 104 through the connecting pipe 10301. The main transmission gear 901 is connected to the sub-transmission gear 1201 at the front end of the synchronous shaft 12 through the transmission belt 11, and the power of the centralized conveying shaft 9 can be transmitted to the synchronous shaft 12, so that the synchronous shaft 12 drives the subsequent components to operate, realizing the efficient conveying of materials and the reasonable distribution of power, ensuring the orderly operation of each link of the equipment. The leakage-proof and discharge brushes 10302 fixedly installed on the coarse crushing chamber 103 at the left and right sides of the bottom of the feeding port 101 clean the biting roller 4 and the grooved roller 6, thereby reducing the adhesion and residue of plastic debris.

[0036] Among them, a grinding and crushing disc 13 is rotatably connected to the bottom of the fine crushing chamber 104 of the equipment main body 1. The middle of the bottom of the grinding and crushing disc 13 is connected to the transmission bevel gear set 8 connected to the rear end of the synchronous shaft 12. A particle aggregation groove 1301 is formed at the top of the outer side wall of the grinding and crushing disc 13. The cross section of the particle aggregation groove 1301 is in a "U" shape and surrounds the outer side of the grinding and crushing disc 13. Material taking scrapers 10401 are arranged on the left and right side walls inside the fine crushing chamber 104 of the equipment main body 1. The material taking scrapers 10401 are slidably connected in the particle aggregation groove 1301. The material taking scrapers 10401 are provided with through grooves corresponding to the rotation direction of the grinding and crushing disc 13. A discharge port 10402 is fixedly connected to the outer side of the material taking scrapers 10401. A spiral conveying shaft 1302 is fixedly installed at the middle of the top of the grinding and crushing disc 13. The spiral conveying shaft 1302 is rotatably connected in the connecting pipe 10301 connected to the bottom of the coarse crushing chamber 103 inside the equipment main body 1.

[0037] Among them, the bottom of the pressure matching crushing disc 14 and the connection part with the top of the grinding and crushing disc 13 are both rough surfaces. Two guiding slide rods 1401 are symmetrically arranged at the top of the pressure matching crushing disc 14. The tops of the guiding slide rods 1401 are slidably connected in the inner middle of the top end face of the fine crushing chamber 104 of the equipment main body 1. A support spring 1402 is sleeved on the outer side of the guiding slide rods 1401.

[0038] With the above technical solution, by arranging a grinding and crushing disc 13 at the bottom of the fine crushing chamber 104, the middle of the bottom of which is connected to the transmission bevel gear set 8 connected to the rear end of the synchronous shaft 12. Driven by the synchronous shaft 12, the grinding and crushing disc 13 rotates, and the rough surface at the top thereof cooperates with the rough surface at the bottom of the pressure-matching crushing disc 14 to further grind and crush the material, improving the fineness of crushing. The particle aggregation groove 1301 can collect the crushed particles. The material taking scraper 10401 slides in the particle aggregation groove 1301. By using its through groove and the discharge port 10402 connected to the outside, the crushed particles can be smoothly discharged. The spiral conveying shaft 1302 can evenly disperse the preliminarily crushed plastic particles in the communicating pipe 10301 on the grinding and crushing disc 13, and at the same time avoid the problem of material blockage, improving the material distribution efficiency. By sliding the guiding slide rod 1401 at the top of the pressure-matching crushing disc 14 in the top end face of the fine crushing chamber 104, and a supporting spring 1402 is sleeved outside the guiding slide rod 1401. The supporting spring 1402 can apply a downward pressure to the pressure-matching crushing disc 14, so that the pressure-matching crushing disc 14 is closely attached to the grinding and crushing disc 13. During the grinding and crushing process, according to the different characteristics of the material, the supporting spring 1402 can adaptively adjust the pressure of the pressure-matching crushing disc 14, ensuring the crushing effect while avoiding damaging the equipment or affecting the material quality due to excessive pressure.

[0039] Specific usage method and function of this embodiment: In the present invention, by starting the drive motor 10, the drive motor 10 drives the central conveying shaft 9 to start rotating. The central conveying shaft 9 transmits power to the auxiliary transmission gear 1201 at the front end of the synchronous shaft 12 through the front main transmission gear 901 and the transmission belt 11, causing the synchronous shaft 12 to rotate. The transmission bevel gear set 8 at the rear end of the synchronous shaft 12 drives the transmission bevel gear set 8 connected to the middle of the bottom of the grinding and crushing disc 13, thereby causing the grinding and crushing disc 13 to start rotating at the bottom of the fine crushing chamber 104. At the same time, the transmission bevel gear set 8 connected to the front end of the central conveying shaft 9 drives the transmission bevel gear set 8 at the lower end of the synchronous rod 15, causing the synchronous rod 15 to rotate. The transmission bevel gear set 8 at the upper end of the synchronous rod 15 drives the transmission shaft 7 to rotate. The transmission worm 701 symmetrically installed on both left and right sides of the transmission shaft 7 meshes with the bottom of the transmission worm wheel 5 fixedly connected to the front ends of the engaging roller 4 and the groove roller 6, causing the engaging roller 4 and the groove roller 6 to rotate relatively in the middle of the coarse crushing chamber 103. Pour the PVC waste from the inverted trapezoidal feed inlet 101 at the top of the equipment main body 1. During the feeding process, the dust removal fans 2 installed on the left and right side walls of the feed inlet 101 are started. The fans blow the raised dust towards the dust collection pipe 3 and collect it centrally through the bottom cloth bag. At the same time, the protective net 201 prevents particles from flying in and damaging the dust removal fans 2. After the PVC waste falls into the coarse crushing chamber 103, under the relative rotation of the engaging roller 4 and the groove roller 6, the protrusions on the outer side wall of the engaging roller 4 cooperate with the grooves on the outer side wall of the groove roller 6 to perform primary coarse crushing on the waste. The through grooves on the groove roller 6 facilitate the discharge of the crushed materials. The leak-proof cleaning brushes 10302 fixedly installed on both left and right sides at the bottom of the coarse crushing chamber 103 clean the outer walls of the engaging roller 4 and the groove roller 6 during their rotation, reducing the adhesion and residue of plastic debris. The coarsely crushed materials are conveyed to the middle of the bottom of the coarse crushing chamber 103 under the action of the symmetric spiral blades on the outer side wall of the central conveying shaft 9 and enter the grinding and crushing disc 13 in the fine crushing chamber 104 through the connecting pipe 10301. The spiral conveying shaft 1302 fixedly installed in the middle of the top of the grinding and crushing disc 13 evenly spreads the preliminarily crushed plastic particles in the connecting pipe 10301 on the grinding and crushing disc 13, while avoiding material blockage. Under the downward pressure of the supporting spring 1402, the bottom rough surface of the pressure matching crushing disc 14 is closely attached to the top rough surface of the grinding and crushing disc 13 to further grind and crush the materials, improving the crushing fineness. As the grinding and crushing disc 13 rotates, the crushed particles fall into the particle aggregation groove 1301. The material taking scraping plates 10401 on the left and right side walls inside the fine crushing chamber 104 of the equipment main body 1 slide in the particle aggregation groove 1301 and use their through grooves and the discharge ports 10402 fixedly connected to the outside to smoothly discharge the crushed particles from the equipment.

[0040] The above description is only an exemplary embodiment of the present invention and is not used to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. An environmentally friendly and efficient polyvinyl chloride particle crushing equipment, characterized by: The invention comprises an equipment body (1); dust removal fans (2) are installed on the left and right sides of the top of the equipment body (1); a dust collecting pipe (3) is fixedly connected to the left and right outer sides of the top of the equipment body (1); a bite roller (4) and a groove roller (6) are rotatably connected to the left and right sides of the inside of the equipment body (1); a transmission shaft (7) is rotatably connected to the top of the front side of the equipment body (1); the middle bottom of the transmission shaft (7) is transmission-connected to the upper end of a synchronization rod (15); a driving motor (10) is fixedly installed at the middle of the rear side wall of the equipment body (1); a synchronization shaft (12) is rotatably connected to the bottom of the front side wall of the equipment body (1); a grinding and crushing disc (13) is rotatably connected to the bottom of the inner cavity of the equipment body (1); a pressure-matching crushing disc (14) is matched and installed on the top of the grinding and crushing disc (13); a central conveying shaft (9) is fixedly connected to the front end of the driving shaft of the driving motor (10); and bottom support seats (105) are provided on the front and rear sides of the bottom of the equipment body (1).

2. The environmentally friendly and efficient polyvinyl chloride particle crushing device as claimed in claim 1, characterized in that: The top of the equipment body (1) is provided with a feed port (101) in the shape of an inverted trapezoid; four circular mounting holes (102) are evenly spaced in the left and right side walls of the feed port (101); a dust removal fan (2) is fixedly mounted in the mounting hole (102); a fine mesh protective net (201) is mounted on the side of the dust removal fan (2) facing the feed port (101); dust collecting pipes (3) are connected to the outer side walls of the feed port (101) corresponding to the mounting holes (102); and the bottoms of the dust collecting pipes (3) are connected together and are equipped with cloth bags.

3. The environmentally friendly and efficient polyvinyl chloride particle crushing device as claimed in claim 1, characterized in that: The bottom of the feed inlet (101) of the equipment body (1) is a coarse grinding chamber (103), and a circular connecting pipe (10301) is provided at the bottom of the coarse grinding chamber (103) and extends into the fine grinding chamber (104) at the bottom of the coarse grinding chamber (103). A pressure-matching grinding disc (14) is slidably connected to the outer wall of the connecting pipe (10301), and plugging brushes (10302) are fixedly installed on the coarse grinding chamber (103) on the left and right sides of the bottom of the feed inlet (101), and the plugging brushes (10302) are in contact with the outer walls of the nip roller (4) and the groove roller (6), respectively.

4. The environmentally friendly and efficient polyvinyl chloride particle crushing device as claimed in claim 1, characterized in that: The bite roller (4) and the groove roller (6) are rotatably connected to the middle of the coarse crushing chamber (103) of the equipment body (1); the front ends of the bite roller (4) and the groove roller (6) are fixedly connected to a transmission worm wheel (5); the transmission worms (701) symmetrically installed on the left and right sides of the transmission shaft (7) are meshingly connected to the bottom of the transmission worm wheel (5); the outer wall of the bite roller (4) is provided with protrusions at equal distances; the outer wall of the groove roller (6) is provided with grooves at medium distances to match the protrusions on the bite roller (4); and the grooves on the outer wall of the groove roller (6) are provided with through grooves at equal distances.

5. The environmentally friendly and efficient polyvinyl chloride particle crushing device as claimed in claim 1, characterized in that: The upper and lower ends of the synchronization rod (15) are respectively provided with transmission bevel gear sets (8), the transmission bevel gear sets (8) being composed of two vertically meshing bevel gears, and the transmission bevel gear set (8) at the lower end of the synchronization rod (15) is connected to the front end of the centralized conveying shaft (9).

6. The environmentally friendly and efficient polyvinyl chloride particle crushing device as claimed in claim 1, characterized in that: The centralized conveying shaft (9) is rotatably connected to the bottom of the coarse crushing chamber (103) of the equipment body (1); two symmetrical spiral blades are provided on the outer side wall of the centralized conveying shaft (9); a main transmission gear (901) is fixedly connected to the front end of the centralized conveying shaft (9); the main transmission gear (901) is transmission-connected to the auxiliary transmission gear (1201) at the front end of the synchronous shaft (12) through a transmission belt (11); and a transmission bevel gear set (8) is fixedly connected to the rear end of the synchronous shaft (12).

7. The environmentally friendly and efficient polyvinyl chloride particle crushing device as claimed in claim 1, characterized in that: The bottom of the fine grinding chamber (104) of the equipment body (1) is rotatably connected to a grinding and crushing disc (13); the middle of the bottom of the grinding and crushing disc (13) is connected to a transmission bevel gear set (8) connected to the rear end of the synchronous shaft (12); a particle gathering groove (1301) is provided at the top of the outer wall of the grinding and crushing disc (13); the cross section of the particle gathering groove (1301) is in the shape of a "U" and surrounds the outer side of the grinding and crushing disc (13); and a material taking scraper (10401) is provided on the left and right side walls inside the fine grinding chamber (104) of the equipment body (1). The material scraper (10401) is slidably connected in the particle gathering groove (1301), and a through groove is opened in the material scraper (10401) corresponding to the rotation direction of the grinding and crushing disk (13). The outer side of the material scraper (10401) is fixedly connected with a discharge port (10402), and a spiral conveying shaft (1302) is fixedly installed in the middle of the top of the grinding and crushing disk (13), and the spiral conveying shaft (1302) is rotatably connected to a connecting pipe (10301) connected to the bottom of the coarse crushing chamber (103) inside the equipment body (1).

8. The environmentally friendly and efficient polyvinyl chloride particle crushing device as claimed in claim 1, characterized in that: The bottom of the pressure-matching crushing disc (14) and the top of the grinding crushing disc (13) are both rough surfaces at the connection point. Two guide slide bars (1401) are symmetrically provided on the top of the pressure-matching crushing disc (14). The top of the guide slide bar (1401) is slidably connected to the top end surface of the fine crushing chamber (104) of the equipment body (1). The outer side of the guide slide bar (1401) is sleeved with a support spring (1402).

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