Conveying device for PVC particle production line

Abstract

The invention relates to the technical field of PVC particle production line material conveying devices, in particular to a PVC particle production line material conveying device which is characterized in that a rotating cover is arranged in a shell, a plurality of sets of guide plates are arranged on the inner wall of the rotating cover, plugging rings are arranged on the two sides of the rotating cover, and the plugging rings are clamped in closed ring grooves formed in the positions, at the plugging rings, of the inner wall of the shell; the conveying device for the PVC particle production line has the beneficial effects that when PVC particles are conveyed, the conveying pump conveys the PVC particles into the shell from the storage bin through the conveying pipe, then the driving motor is started to drive the rotating shaft to rotate, the rotating shaft drives the conveying shaft to rotate synchronously through the connecting flange, and the PVC particles are conveyed through the conveying pipe; a conveying screw on a conveying shaft gradually conveys materials into a rotating cover through rotation of the conveying shaft, at the moment, a connecting flange rotates to drive the conveying shaft to synchronously rotate at the position, at the rear end of a baffle, of a sun gear, and the sun gear rotates to be meshed with planet gears on the periphery.

Description

Technical Field

[0001] This invention relates to the field of material conveying devices for PVC pellet production lines, specifically to a material conveying device for PVC pellet production lines. Background Technology

[0002] In existing PVC granule production processes, despite pretreatment of raw materials, dust, fine impurities, and particulate contaminants generated by friction easily adhere to the granule surface during extrusion, granulation, and subsequent conveying. These impurities mainly originate from the following aspects: First, the raw materials themselves may contain light impurities such as dust and rope ends, which further generate dust during conveying due to friction with the pipe wall; second, during extrusion and granulation, the high-temperature and high-pressure environment inside the equipment may cause some PVC to degrade or carbonize, forming impurities such as black spots and coke particles; third, during conveying, especially when using dilute phase pneumatic conveying, the high-speed airflow causes the granules to repeatedly collide with the pipe wall, generating "angel hair" or particulate dust. These contaminants will spread with the airflow and accumulate at key nodes of the conveying system, such as hoppers, extrusion outlets, or packaging lines, seriously affecting product quality and subsequent processing efficiency.

[0003] Furthermore, environmental impact report data shows that during the production of PVC granules, particulate matter can be generated at a rate of 0.2 to 6.0 kg / t of product, partly from raw material impurities and mechanical friction during processing. If not effectively controlled, this will lead to dust spillage, polluting the production environment and affecting the stability of equipment operation.

[0004] Therefore, there is an urgent need in the existing technology for a device that can simultaneously remove impurities and dust during the material conveying process in order to improve the cleanliness of PVC granules and the overall efficiency of the production line. Summary of the Invention

[0005] The purpose of this invention is to provide a material conveying device for a PVC pellet production line to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rotating cover is provided inside the housing, a plurality of guide plates are provided on the inner wall of the rotating cover, and sealing rings are provided on both sides of the rotating cover. The sealing rings are engaged in a closed ring groove opened at the sealing ring on the inner wall of the housing and are rotatably connected to the housing. A conveying shaft is inserted into the middle of the housing inside the rotating cover, and a conveying screw is connected to the conveying shaft.

[0007] Preferably, one end of the conveying shaft extends from the rear end of the housing, and the extended end is connected to the rotating shaft inserted into the end of the drive motor through a connecting flange. The drive motor can drive the rotating shaft to rotate the conveying shaft inside the rotating cover of the housing.

[0008] Preferably, a conveying pipe is provided at the top of the shell, and the conveying pipe is connected to the conveying pump of the storage silo through a flange, and the granular PVC material is conveyed from the conveying pipe into the shell.

[0009] Preferably, the conveying shaft is rotatably connected to the baffle at the rear end of the conveying pipe via a flange, and the outer side of the baffle is engaged in the engaging ring groove opened around the baffle on the inner wall of the housing.

[0010] Preferably, the conveying shaft is fixedly connected to the sun gear at the rear end of the baffle, and planet gears are arranged around the sun gear on the baffle. The planet gears are fixed around the sun gear by a planet gear support frame in the middle of the inner side. The planet gears are rotatably connected to the planet gear support frame, and the sun gear and planet gears are meshed. An internal gear ring is arranged on the inner surface of the baffle on the outer side of the planet gears, and the internal gear ring is meshed with the planet gears.

[0011] Preferably, multiple sets of connecting rods are fixedly connected to the outer side of the baffle, and the other end of the connecting rod is fixedly connected to a sealing ring provided on the inner side of the rotating cover. The baffle can drive the connecting rods and drive the rotating cover to rotate through the sealing ring.

[0012] Preferably, the rotating cover has multiple sets of slots around its perimeter, and telescopic slots are provided on both sides of the slots. A spring is provided in the telescopic slot, one end of the spring is connected to the inner wall of the telescopic slot, and the other end of the spring is connected to the connecting frame. The spring can drive the connecting frame to extend and retract, and a filter screen is provided on the inner side of the connecting frame.

[0013] Preferably, the connecting frame is provided with sealing plates at its upper and lower ends, the length of the sealing plates is greater than the width of the expansion groove, and the sealing plates are inserted into the through groove opened inside the expansion groove of the housing.

[0014] Preferably, the inner wall of the housing is provided with a pressing block at the top of the outer side of the rotating cover, and the two sides of the pressing block are set as arc surfaces, and the two sides of the end of the sealing plate extending from the through groove are also set as arc surfaces.

[0015] Preferably, the bottom of the shell is connected to an extension block, the extension block has an inclined groove inside, the inclined groove communicates with the bottom of the shell, and the extension block has a slag discharge port at the bottom end of the inclined groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention proposes a material conveying device for a PVC granule production line. When conveying granular PVC, a conveying pump transports the granular PVC from the storage silo through a conveying pipe to the housing. Then, a drive motor is activated to drive the rotating shaft to rotate. The rotating shaft, through a connecting flange, drives the conveying shaft to rotate synchronously. The conveying screw on the conveying shaft, through its rotation, gradually conveys the material into the rotating shroud. At this time, the connecting flange, through its rotation, drives the sun gear located at the rear end of the baffle to rotate synchronously. The sun gear, through its rotation, meshes with the surrounding planetary gears, driving the planetary gears to rotate in the opposite direction. The planetary gears, through their rotation, rotate in the same direction as the internal gear ring located outside the planetary gears. The internal gear ring, through its rotation, drives the baffle to rotate in the opposite direction to the conveying shaft. The rotation of the baffle, through the connecting rod and the sealing ring located inside the rotating shroud, drives the rotating shroud to rotate in the opposite direction to the conveying shaft. Although the material entering the rotating shroud will experience a slight slowdown in its conveying speed, the material, after passing through the conveying screw on the conveying shaft... The guide plate inside the rotating hood causes the PVC granules to be continuously "rubbed back" within the hood, creating an additional stirring effect. This fully disperses the PVC granules, preventing them from sticking together. Simultaneously, impurities and dust in the PVC granules are filtered through the filter screen inside the connecting frame in the sluice box on the rotating hood, reducing the amount of impurities and dust. The impurities and dust filtered through the filter screen fall by gravity into the inclined groove in the extension block at the bottom of the shell, and are then discharged through the slag discharge port at the bottom of the inclined groove. The dispersed and filtered PVC granules are discharged through the material outlet at the front of the shell to enter the next process. Furthermore, when the rotating hood drives the connecting frame to rotate, the pressing block at the top of the inner wall of the shell presses against the sealing plate extending from the connecting frame outside the filter screen through the arc surface. This causes the spring in the telescopic groove to drive the connecting frame to extend and retract, causing the filter screen to shake and shake off the impurities and dust adhering to the filter screen, preventing them from affecting the filtration efficiency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0020] Figure 3 This is a schematic diagram of another cross-sectional view of the present invention;

[0021] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the rotating cover of the present invention;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the connecting frame and filter screen of the present invention.

[0024] In the diagram: 1. Shell; 2. Conveying pipe; 3. Drive motor; 4. Rotating shaft; 5. Connecting flange; 6. Conveying shaft; 7. Baffle; 8. Sun gear; 9. Planetary gear; 10. Connecting rod; 11. Rotating cover; 12. Sealing ring; 13. Guide plate; 14. Telescopic groove; 15. Spring; 16. Connecting frame; 17. Filter screen; 18. Sealing plate; 19. Through groove; 20. Extrusion block; 21. Extension block; 22. Inclined chute; 23. Slag discharge port; 24. Material outlet; 25. Conveying screw; 26. Planetary gear support frame; 27. Internal gear ring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1 to 6 The present invention provides a technical solution: a rotating cover 11 is provided inside the housing 1, and multiple sets of guide plates 13 are provided on the inner wall of the rotating cover 11. Sealing rings 12 are provided on both sides of the rotating cover 11. The sealing rings 12 are engaged in the closed ring grooves opened at the sealing rings 12 on the inner wall of the housing 1 and are rotatably connected to the housing 1. A conveying shaft 6 is inserted into the middle of the housing 1 inside the rotating cover 11. A conveying screw 25 is connected to the conveying shaft 6. The rotating shaft 4 drives the conveying shaft 6 to rotate synchronously through the connecting flange 5, so that the conveying screw 25 on the conveying shaft 6 gradually conveys the material into the rotating cover 11 through the rotation of the conveying shaft 6.

[0027] One end of the conveying shaft 6 extends from the rear end of the housing 1. The extended end is connected to the rotating shaft 4 inserted into the end of the drive motor 3 through the connecting flange 5. The drive motor 3 can drive the rotating shaft 4 to make the conveying shaft 6 rotate inside the rotating cover 11 in the housing 1. A conveying pipe 2 is provided on the top of the housing 1. The conveying pipe 2 is connected to the conveying pump of the storage silo through the flange. Particle PVC material is conveyed from the conveying pipe 2 to the housing 1. The conveying pump conveys the particle PVC from the storage silo through the conveying pipe 2 to the housing 1.

[0028] The conveying shaft 6 is rotatably connected to the baffle 7 at the rear end of the conveying pipe 2 via a flange. The outer side of the baffle 7 is engaged in the retaining ring grooves opened around the baffle 7 on the inner wall of the housing 1. The sun gear 8 is fixedly connected to the rear end of the conveying shaft 6 via the baffle 7. Planet gears 9 are arranged around the sun gear 8 on the baffle 7. The planet gears 9 are fixed around the sun gear 8 via the planet gear support frame 26 in the middle of the inner side. The planet gears 9 are rotatably connected to the planet gear support frame 26. The sun gear 8 and the planet gears 9 are meshed. Internal teeth are provided on the inner surface of the baffle 7 on the outer side of the planet gears 9. The internal gear ring 27 meshes with the planetary gear 9; multiple sets of connecting rods 10 are fixedly connected to the outer side of the baffle 7, and the other end of the connecting rod 10 is fixedly connected to the sealing ring 12 provided on the inner side of the rotating cover 11. The baffle 7 can drive the connecting rods 10 and drive the rotating cover 11 to rotate through the sealing ring 12; the internal gear ring 27 drives the baffle 7 to rotate in the opposite direction to the conveying shaft 6 through rotation. The rotation of the baffle 7 passes through the connecting rods 10 and through the sealing ring 12 provided on the inner side of the rotating cover 11, driving the rotating cover 11 to rotate in the opposite direction to the rotation of the conveying shaft 6.

[0029] Multiple sets of perforations are formed around the rotating cover 11. Telescopic grooves 14 are formed on both sides of the perforations. Springs 15 are set in the telescopic grooves 14. One end of the spring 15 is connected to the inner wall of the telescopic groove 14, and the other end of the spring 15 is connected to the connecting frame 16. The spring 15 can drive the connecting frame 16 to extend and retract. A filter screen 17 is set on the inner side of the connecting frame 16. Sealing plates 18 are set at the top and bottom of the connecting frame 16. The length of the sealing plates 18 is greater than the width of the telescopic groove 14. The sealing plates 18 are inserted into the through grooves 19 formed in the inner side of the shell 1 in the telescopic groove 14. The pressing block 20 at the top of the inner wall of the shell 1 presses the sealing plates 18 extending from the connecting frame 16 outside the filter screen 17 through the arc surface, so that the spring 15 in the telescopic groove 14 drives the connecting frame 16 to extend and retract, so that the filter screen 17 vibrates.

[0030] The inner wall of the housing 1 has a pressing block 20 on the top of the outer side of the rotating cover 11. The two sides of the pressing block 20 are set as arc surfaces. The two sides of the end of the sealing plate 18 extending from the through groove 19 are also set as arc surfaces. The bottom of the housing 1 is connected to the extension block 21. The extension block 21 has an inclined groove 22 inside. The inclined groove 22 communicates with the bottom of the interior of the housing 1. The extension block 21 has a slag discharge port 23 at the bottom end of the inclined groove 22. The impurities and dust filtered by the filter screen 17 fall into the inclined groove 22 in the extension block 21 at the bottom of the housing 1 by gravity, and are then discharged through the slag discharge port 23 at the bottom of the inclined groove 22.

[0031] In actual use, when conveying granular PVC, the conveying pump transports the granular PVC from the storage silo through the conveying pipe 2 to the housing 1. Then, the drive motor 3 is started to drive the rotating shaft 4 to rotate. The rotating shaft 4 drives the conveying shaft 6 to rotate synchronously through the connecting flange 5. The conveying screw 25 on the conveying shaft 6 gradually conveys the material into the rotating shroud 11 through the rotation of the conveying shaft 6. At this time, the connecting flange 5 rotates, driving the sun gear 8 set at the rear end of the baffle 7 to rotate synchronously. The sun gear 8 meshes with the planetary gears 9 around it, driving the planetary gears 9 to rotate in the opposite direction. The planetary gears 9 rotate in the same direction as the internal gear ring 27 set outside the planetary gears 9. The internal gear ring 27 drives the baffle 7 to rotate in the opposite direction to the conveying shaft 6 through the connecting rod 10 and the sealing ring 12 set inside the rotating shroud 11, driving the rotating shroud 11 to rotate in the opposite direction to the rotation of the conveying shaft 6. At this time, although the material entering the rotating shroud 11 will slow down the conveying speed to a certain extent, the material will still be conveyed through the conveying screw 25 on the conveying shaft 6 and the sealing ring 12 set inside the rotating shroud 11. The guide plate 13 causes the PVC granules to be continuously "rubbed back" in the rotating cover 11, generating an additional stirring effect, which fully disperses the PVC granules and prevents them from sticking together. At the same time, impurities and dust in the PVC granules are filtered through the filter screen 17 inside the connecting frame 16 in the trough on the rotating cover 11, reducing the amount of impurities and dust in the PVC granules. The impurities and dust filtered from the filter screen 17 fall into the inclined groove 22 in the extension block 21 at the bottom of the shell 1 by gravity, and then are discharged through the slag discharge port 23 at the bottom of the inclined groove 22. After dispersion and filtration, the PVC particles are discharged through the material outlet 24 at the front end of the shell 1 and enter the next process. Furthermore, when the rotating cover 11 drives the connecting frame 16 to rotate, the pressing block 20 at the top of the inner wall of the shell 1 presses the sealing plate 18 extending from the connecting frame 16 to the outside of the filter screen 17 through the arc surface, causing the spring 15 in the telescopic groove 14 to drive the connecting frame 16 to extend and retract, causing the filter screen 17 to shake, shaking off the impurities and dust stuck on the filter screen 17, and preventing them from affecting the filtration efficiency of the filter screen 17.

[0032] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A feeding device for a PVC pellet production line, characterized in that: include: The housing (1) is provided with a rotating cover (11). Multiple guide plates (13) are provided on the inner wall of the rotating cover (11). Sealing rings (12) are provided on both sides of the rotating cover (11). The sealing rings (12) are held in the closed ring groove opened at the sealing ring (12) on the inner wall of the housing (1) and are rotatably connected to the housing (1). A conveying shaft (6) is inserted into the middle of the rotating cover (11) of the housing (1). A conveying screw (25) is connected to the conveying shaft (6).

2. The feeding device for a PVC pellet production line according to claim 1, characterized in that: One end of the conveying shaft (6) extends from the rear end of the housing (1), and the extended end is connected to the rotating shaft (4) inserted into the end of the drive motor (3) through the connecting flange (5). The drive motor (3) can drive the rotating shaft (4) to drive the conveying shaft (6) to rotate inside the rotating cover (11) in the housing (1).

3. A feeding device for a PVC pellet production line according to claim 2, characterized in that: The top of the housing (1) is provided with a conveying pipe (2), which is connected to the conveying pump of the storage silo through a flange. Particle PVC material is conveyed from the conveying pipe (2) into the housing (1).

4. A feeding device for a PVC pellet production line according to claim 3, characterized in that: The conveying shaft (6) is rotatably connected to the baffle (7) at the rear end of the conveying pipe (2) via a flange. The outer side of the baffle (7) is held in the holding ring groove opened around the baffle (7) on the inner wall of the housing (1).

5. A feeding device for a PVC pellet production line according to claim 4, characterized in that: The conveying shaft (6) is fixedly connected to the sun gear (8) at the rear end of the baffle (7). The baffle (7) is provided with planet gears (9) around the sun gear (8). The planet gears (9) are fixed around the sun gear (8) by the planet gear support frame (26) in the middle of the inner side. The planet gears (9) are rotatably connected to the planet gear support frame (26). The sun gear (8) and the planet gears (9) are meshed. On the inner surface of (7), an internal gear ring (27) is provided on the outer side of the planet gears (9). The internal gear ring (27) is meshed with the planet gears (9).

6. A feeding device for a PVC pellet production line according to claim 5, characterized in that: Multiple sets of connecting rods (10) are fixedly connected to the outer side of the baffle (7). The other end of the connecting rod (10) is fixedly connected to the sealing ring (12) set inside the rotating cover (11). The baffle (7) can drive the connecting rod (10) and drive the rotating cover (11) to rotate through the sealing ring (12).

7. A feeding device for a PVC pellet production line according to claim 6, characterized in that: The rotating cover (11) has multiple sets of slots around its perimeter. On both sides of the slots are telescopic grooves (14). A spring (15) is installed in the telescopic groove (14). One end of the spring (15) is connected to the inner wall of the telescopic groove (14), and the other end of the spring (15) is connected to the connecting frame (16). The spring (15) can drive the connecting frame (16) to extend and retract. A filter screen (17) is installed on the inner side of the connecting frame (16).

8. A feeding device for a PVC pellet production line according to claim 7, characterized in that: The connecting frame (16) is provided with sealing plates (18) at both the top and bottom of its four sides. The length of the sealing plate (18) is greater than the width of the telescopic groove (14). The sealing plate (18) is inserted into the through groove (19) opened in the shell (1) inside the telescopic groove (14).

9. A feeding device for a PVC pellet production line according to claim 8, characterized in that: The inner wall of the housing (1) is provided with a pressing block (20) on the top of the outer side of the rotating cover (11). The two sides of the pressing block (20) are set as arc surfaces, and the two sides of the end of the sealing plate (18) extending from the through groove (19) are also set as arc surfaces.

10. A feeding device for a PVC pellet production line according to claim 9, characterized in that: The bottom of the shell (1) is connected to an extension block (21). An inclined groove (22) is provided inside the extension block (21). The inclined groove (22) is connected to the bottom of the shell (1). A slag discharge port (23) is provided at the bottom end of the inclined groove (22) of the extension block (21).

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