Drying device for PVC particle processing

Abstract

The invention discloses a drying device for PVC (polyvinyl chloride) particle processing, which comprises a workbench, a rotating motor is mounted on one side of the upper end of the workbench, the rotating motor is connected with a feeding screw rod, a feeding cylinder is mounted on the outer side of the feeding screw rod, a conveying belt device is mounted on the workbench, a feeding mechanism is arranged above the workbench, and the feeding cylinder is connected with the feeding screw rod. An air drying mechanism is arranged above the workbench; the feeding mechanism comprises a conical feeding hopper, a screening frame, a driving frame, an extrusion plate, a telescopic frame, a conical material guiding channel and a feeding channel. The air drying mechanism comprises a first air inlet, a first air outlet, a second air outlet, a second air inlet, an intercepting net, a negative pressure box, an air blowing box, an air outlet box, a water containing box, an exhaust pipe and an air outlet pipe. The material drying device has the beneficial effects that materials can be dried while being moved, the space occupied by the device is reduced, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to PVC particle processing equipment technical field, more specifically, it relates to a kind of drying device for PVC particle processing. BACKGROUND

[0002] PVC material is polyvinyl chloride, it is one of the largest plastic products in the world, cheap, widely used, polyvinyl chloride resin is white or light yellow powder;PVC particles are raw materials for manufacturing other plastic products, generally, PVC particles production process, need to heat PVC raw material polymerization, after centrifugal dewatering, drying bed drying and screening, get PVC particles.

[0003] In prior art, when drying PVC particles, generally by blowing, and in order to improve drying efficiency, generally hot air is used to dry PVC particles, but there are some problems in use, the melting point of PVC particles is low, when using hot air to dry PVC particles, it is easy to make PVC particles melt and stick on drying device, in turn, the drying of PVC particles is inconvenient, and when using PVC particles, PVC particles need to be transported frequently, if drying can be carried out while transporting PVC particles, space can be saved, and work efficiency can be improved.

[0004] It should be noted that the above content belongs to the technical cognition of the inventor, and does not necessarily constitute the prior art. SUMMARY

[0005] The purpose of the present application is to solve the above problems, a kind of drying device for PVC particle processing is designed.

[0006] The technical scheme of the present application for realizing the above-mentioned purpose is a kind of drying device for PVC particle processing, including workbench, the upper end of the workbench one side is installed with rotating motor, the rotating motor is connected with feeding screw, the outer side of the feeding screw is installed with feeding cylinder, the feeding screw can rotate in the feeding cylinder, a plurality of stirring shafts are installed on the feeding screw, the discharge end below the feeding cylinder is provided with conveying belt device installed on the workbench, the upper side of the workbench is provided with feeding mechanism, the upper side of the workbench is provided with air drying mechanism; The feeding mechanism includes conical feeding hopper located above the workbench, the conical feeding hopper is installed on the workbench by support rod, the lower end of the conical feeding hopper is installed with screening frame, the upper end of the feeding cylinder is installed with driving frame, the driving frame can drive screening frame to shake, the screening frame is provided with extrusion plate, the one side of the screening frame is installed with telescopic frame, the telescopic frame can drive extrusion plate to move, the lower end of the screening frame is installed with conical guide channel, the upper end of the feeding cylinder is installed with feeding channel, the lower end of the conical guide channel extends into the feeding channel; The air-drying mechanism includes multiple first air inlets located on one side of the upper end of the feed cylinder, multiple first air outlets located below the first air inlets at the lower end of the feed cylinder, multiple second air outlets located on one side of the first air inlets at the upper end of the feed cylinder, and multiple second air inlets located below the second air outlets at the lower end of the feed cylinder. Each of the first air inlets, first air outlets, second air outlets, and second air inlets is equipped with a screen. A negative pressure box is installed on one side of the lower end of the feed cylinder, which can enclose the multiple first air inlets. A blower box is installed on one side of the negative pressure box at the lower end of the feed cylinder, which can enclose the multiple second air inlets. An air outlet box is installed at the upper end of the feed cylinder, which can enclose the multiple second air outlets. A water tank is installed on one side of the upper end of the worktable, and an exhaust pipe is installed on one side of the air outlet box, with one end of the exhaust pipe extending into the water tank. An air outlet pipe is installed at one end of the negative pressure box, with one end of the air outlet pipe extending into the water tank. The negative pressure box and the blower box are mounted on the worktable via support columns.

[0007] Furthermore, the screening frame includes a square frame located below the conical feed hopper. A screening screen is installed at the lower end of the square frame, and guide grooves are opened on both sides of the upper end of the square frame. Guide blocks are installed on both sides of the lower end of the conical feed hopper, with one end of the guide block extending into the guide groove. A conical material guide channel is installed at the lower end of the square frame. The telescopic frame includes a fixed plate located on one side of the square frame. The fixed plate is installed on the square frame by a fixed rod. Multiple electric telescopic rods are installed on the fixed plate. Multiple inlets and outlets are opened on one side of the square frame. One end of the telescopic rod passes through the inlet and outlet and connects to the extrusion plate.

[0008] Furthermore, the drive frame includes a movable rack mounted on one side of the square frame, a first gear meshing with one side of the movable rack, the first gear and the movable rack being intermittently engaged and disengaged, a rotating shaft mounted on the lower end of the first gear, a first rolling bearing mounted on the lower end of the rotating shaft, the lower end of the first rolling bearing mounted on the upper end of the feed cylinder, a first bevel gear mounted on the lower end of the rotating shaft, a second bevel gear mounted on one end of the feed screw, the first bevel gear and the second bevel gear meshing, a movable plate mounted on one side of the square frame, the movable plate and the conical feed hopper being connected by multiple telescopic springs, and a positioning rod mounted on the movable plate.

[0009] Furthermore, the first gear is provided with multiple sets of teeth, which are evenly distributed on the first gear, and there are gaps between the multiple sets of teeth that can be disconnected from the moving rack.

[0010] Furthermore, the negative pressure box includes a square box body installed at the lower end of the feed cylinder. A suction pipe is installed at the lower end of the square box body. A sealing plate is installed at one end of the suction pipe, and a sealing bearing is installed on the sealing plate. A suction fan blade is installed inside the suction pipe. One end of the suction fan blade extends through the sealing bearing to the outside of the suction pipe. A third bevel gear is installed at the end of the suction fan blade located outside the suction pipe. An accelerator is installed on one side of the lower end of the feed cylinder. A second gear is installed at the power input end of the accelerator. A third gear is installed at one end of the feed screw. The second gear and the third gear mesh. A drive shaft is connected to the power output end of the accelerator. Second rolling bearings are installed at both ends of the drive shaft. The second rolling bearings are installed on the feed cylinder through a connecting rod. A fourth bevel gear is installed on the drive shaft. The fourth bevel gear meshes with the third bevel gear.

[0011] Furthermore, the blower box includes a fixed box body installed at the lower end of the feed cylinder, an air inlet pipe installed on one side of the lower end of the fixed box body, a blower fan blade installed inside the air inlet pipe, a fifth bevel gear installed at one end of the blower fan blade, and a sixth bevel gear installed at one end of the drive shaft, with the fifth bevel gear and the sixth bevel gear meshing.

[0012] Furthermore, a sponge conveyor belt is installed inside the feeding channel. A square opening is opened at one end of the feeding channel, and one end of the sponge conveyor belt extends through the square opening to the outside of the feeding channel. A conical guide channel can guide the material onto the sponge conveyor belt. The power output end of the sponge conveyor belt extends to the outside of the feeding channel. A seventh bevel gear is installed at the power output end of the sponge conveyor belt, and an eighth bevel gear is installed at the lower end of the rotating shaft. The eighth bevel gear and the seventh bevel gear mesh.

[0013] Furthermore, a water storage tank is installed on one side of the upper end of the workbench, and the water storage tank is located below the sponge conveyor belt. Multiple extrusion rollers are installed on one side of the upper end of the water storage tank, and the extrusion rollers can extrude the sponge conveyor belt.

[0014] The beneficial effects of this invention are as follows: The rotary motor, feeding screw, and feeding cylinder can be combined into a auger, which allows the material to move when it is added to the feeding cylinder. During the addition of material, the material can be screened by the screening frame, allowing small particles to enter the feeding cylinder. Agglomerated particles can be broken by the movement of the extrusion plate and then fall into the feeding cylinder, which facilitates the dispersion of material into the feeding cylinder and improves drying efficiency. The rotation of the feeding screw allows the material to be spread evenly in the feeding cylinder, preventing material accumulation. Then, the negative pressure box can extract the moisture contained in the material. When the material moves to the rear of the feeding cylinder, it can be dried by the blower box, and the exhaust air can be discharged into the water tank. The water can absorb impurities, ensuring air quality. Furthermore, the material is dried while being moved, which reduces the space occupied by this device and improves working efficiency. The first gear and the moving rack can be intermittently engaged and disengaged, which allows the square frame to shake multiple times when the first gear rotates one revolution, resulting in a better vibration effect. Installing a sponge conveyor belt in the feeding channel can absorb the moisture contained in the material in advance. The moisture can be absorbed from the material in multiple ways, which improves work efficiency and ensures drying quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a drying device for PVC granule processing according to the present invention; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 yes Figure 1 A magnified view of a section at point B in the middle; Figure 4 yes Figure 1 A magnified view of a section at point C; Figure 5 yes Figure 1 A magnified view of a section at point D; Figure 6 yes Figure 1 A magnified view of a section at point E in the middle; Figure 7 This is a side view schematic diagram of a drying device for PVC granule processing according to the present invention; Figure 8 yes Figure 7 A magnified view of a section at point F in the middle; Figure 9 yes Figure 7 A magnified view of a section at point G in the middle; Figure 10 This is a schematic diagram showing the connection relationship between the movable rack and the first gear described in this invention; In the diagram: 1. Workbench; 2. Rotary motor; 3. Feed screw; 4. Feed cylinder; 5. Stirring shaft; 6. Conveyor belt device; 7. Conical feed hopper; 8. Support rod; 9. Screening frame; 10. Drive frame; 11. Extrusion plate; 12. Telescopic frame; 13. Conical guide channel; 14. Feed channel; 15. First air inlet; 16. First air outlet; 17. Second air outlet; 18. Second air inlet; 19. Interception net; 20. Negative pressure box; 21. Blower box; 22. Air outlet box; 23. Water tank; 24. Exhaust pipe; 25. Air outlet pipe; 26. Support column; 27. Square frame; 28. Screening net; 29. ​​Guide groove; 30. Guide block; 31. Fixing plate; 32. Fixing rod; 33. Electric telescopic rod; 34. Inlet and outlet; 35. Moving gear. 36. First gear; 37. Rotating shaft; 38. First rolling bearing; 39. First bevel gear; 40. Second bevel gear; 41. Moving plate; 42. Telescopic spring; 43. Positioning rod; 44. Square box; 45. Suction pipe; 46. Sealing plate; 47. Sealing bearing; 48. Suction fan blade; 49. Third bevel gear; 50. Accelerator; 51. Second gear; 52. Third gear; 53. Drive shaft; 54. Second rolling bearing; 55. Connecting rod; 56. Fourth bevel gear; 57. Fixed box; 58. Air inlet pipe; 59. Blower fan blade; 60. Fifth bevel gear; 61. Sixth bevel gear; 62. Sponge conveyor belt; 63. Square opening; 64. Seventh bevel gear; 65. Eighth bevel gear; 66. Water tank; 67. Squeeze roller. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on 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.

[0017] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] This invention provides, for example Figures 1-10The drying device shown includes a workbench 1, a rotary motor 2 mounted on one side of the upper end of the workbench 1, a feed screw 3 connected to the rotary motor 2, a feed cylinder 4 mounted on the outside of the feed screw 3, the feed screw 3 being rotatable within the feed cylinder 4, multiple stirring shafts 5 mounted on the feed screw 3, a conveyor belt device 6 mounted on the workbench 1 below the discharge end of the feed cylinder 4, a feeding mechanism above the workbench 1, and a drying mechanism above the workbench 1; the feeding mechanism includes a conical feed hopper 7 located above the workbench 1. The feed hopper 7 is mounted on the workbench 1 via a support rod 8. A screening frame 9 is installed at the lower end of the conical feed hopper 7. A drive frame 10 is installed at the upper end of the feed cylinder 4, which can drive the screening frame 9 to shake. An extrusion plate 11 is provided inside the screening frame 9. A telescopic frame 12 is installed on one side of the screening frame 9, which can drive the extrusion plate 11 to move. A conical guide channel 13 is installed at the lower end of the screening frame 9. A feed channel 14 is installed at the upper end of the feed cylinder 4, and the lower end of the conical guide channel 13 extends into the feed channel 14. The air-drying mechanism includes a section located at the upper end of the feed cylinder 4. Multiple first air inlets 15 are located on the side of the feed cylinder 4. Below each first air inlet 15 are multiple first air outlets 16 located at the lower end of the feed cylinder 4. To one side of each first air inlet 15 are multiple second air outlets 17 located at the upper end of the feed cylinder 4. Below each second air outlet 17 are multiple second air inlets 18 located at the lower end of the feed cylinder 4. Each of the first air inlets 15, first air outlets 16, second air outlets 17, and second air inlets 18 is equipped with a screen 19. A negative pressure box 20 is installed on one side of the lower end of the feed cylinder 4, which can enclose the multiple first air inlets 15. A blower box 21 is installed on one side of the feed cylinder 4 at the lower end. The blower box 21 can wrap multiple second air inlets 18. An air outlet box 22 is installed on the upper end of the feed cylinder 4. The air outlet box 22 can wrap multiple second air outlets 17. A water tank 23 is installed on one side of the upper end of the workbench 1. An exhaust pipe 24 is installed on one side of the air outlet box 22. One end of the exhaust pipe 24 extends into the water tank 23. An air outlet pipe 25 is installed on one end of the negative pressure box 20. One end of the air outlet pipe 25 extends into the water tank 23. The negative pressure box 20 and the blower box 21 are installed on the workbench 1 through a support column 26. The drying process of this device for PVC granules is as follows: The PVC granules to be dried are placed into the conical feed hopper 7. Under the action of gravity, the PVC granules fall into the screening frame 9. The drive frame 10 drives the screening frame 9 to shake, allowing the dispersed PVC granules in the screening frame 9 to enter the conical guide channel 13, and then enter the feed cylinder 4 through the feed channel 14. The PVC granules that are stuck together remain in the screening frame 9. At regular intervals, or when the operator moves the extrusion plate 11 via the telescopic frame 12, the PVC granules stuck together in the screening frame 9 are further dried. The PVC granules are crushed and then fed into the feed cylinder 4. The rotary motor 2 is started, which drives the feed screw 3 to rotate. The feed screw 3 moves the PVC granules, causing them to spread evenly within the feed cylinder 4. The PVC granules first move to the first air outlet 16. A negative pressure box 20 extracts the moisture from the PVC granules. A screen 19 at the first air outlet 16 prevents the PVC granules from entering the negative pressure box 20. Outside air enters the feed cylinder 4 through the first air inlet 15. The five intercepting nets 19 prevent external impurities from entering. Air in the negative pressure box 20 can be discharged into the water tank 23 through the air outlet 25, and the water in the water tank 23 purifies the air. As the feed screw 3 rotates, the PVC particles can move to the second air inlet 18. The blower box 21 can blow up the PVC particles at the lower end of the feed cylinder 4, thereby increasing the contact area between the PVC particles and the air and improving the drying efficiency. The intercepting nets 19 at the second air inlet 18 prevent external impurities from entering. Air in the feed cylinder 4 can be discharged and enter through the second air outlet 17. Inside the air outlet box 22, the intercepting net 19 at the second air outlet 17 prevents PVC particles from leaking out. The air inside the air outlet box 22 can enter the water tank 23 through the exhaust pipe 24, which facilitates air purification. When the PVC particles move to the discharge end of the feed cylinder 4, the PVC particles can be dried. Then, the PVC particles fall onto the conveyor belt device 6 for further processing. When the feed screw 3 rotates, it can drive the stirring shaft 5 to rotate, which can stir the PVC particles in the feed cylinder 4, increase the contact area between the PVC particles and the air, and improve the drying efficiency.

[0019] Refer to the instruction manual appendix Figure 1 Instruction manual attached Figure 2 Instruction manual attached Figure 7 Included with instruction manual Figure 8The screening frame 9 includes a square frame 27 located below the conical feed hopper 7. A screening screen 28 is installed at the lower end of the square frame 27. Guide grooves 29 are opened on both sides of the upper end of the square frame 27. Guide blocks 30 are installed on both sides of the lower end of the conical feed hopper 7. One end of the guide block 30 extends into the guide groove 29. A conical guide channel 13 is installed at the lower end of the square frame 27. The telescopic frame 12 includes a fixed plate 31 located on one side of the square frame 27. The fixed plate 31 is installed on the square frame 27 by a fixed rod 32. Multiple electric telescopic rods 33 are installed on the fixed plate 31. Multiple inlets and outlets 34 are opened on one side of the square frame 27. One end of the telescopic rod 33 passes through the inlet and outlet 34 and connects to the extrusion plate 11. The screening process of PVC granules by the screening frame 9 is as follows: After the PVC granules enter the screening frame 9, they fall onto the screening mesh 28. The drive frame 10 drives the square frame 27 and the screening mesh 28 to shake, which allows the dispersed PVC granules to pass through the screening mesh 28 and move into the conical guide channel 13. The PVC granules that are stuck together will be intercepted on the screening mesh 28. After a period of time, the electric telescopic rod 33 can be automatically extended and drive the extrusion plate 11 to move, which can crush the PVC granules stuck on the screening mesh 28 and allow the PVC granules to pass through the screening mesh 28 and fall into the conical guide channel 13. After a period of time, the electric telescopic rod 33 is shortened again, which can drive the extrusion plate 11 back to its original position and extrude the PVC granules again. The PVC granules can also be extruded by the operator controlling the extension and retraction of the electric telescopic rod 33.

[0020] Refer to the instruction manual appendix Figure 1 Instruction manual attached Figure 2 Instruction manual attached Figure 3 Instruction manual attached Figure 7 Included with instruction manual Figure 8 The drive frame 10 includes a movable rack 35 mounted on one side of the square frame 27. A first gear 36 meshes with one side of the movable rack 35. The first gear 36 and the movable rack 35 can be intermittently engaged and disengaged. A rotating shaft 37 is mounted on the lower end of the first gear 36. A first rolling bearing 38 is mounted on the lower end of the rotating shaft 37. The lower end of the first rolling bearing 38 is mounted on the upper end of the feed cylinder 4. A first bevel gear 39 is mounted on the lower end of the rotating shaft 37. A second bevel gear 40 is mounted on one end of the feed screw 3. The first bevel gear 39 and the second bevel gear 40 mesh. A movable plate 41 is mounted on one side of the square frame 27. The movable plate 41 and the conical feed hopper 7 are connected by multiple telescopic springs 42. A positioning rod 43 is mounted on the movable plate 41. The process of the drive frame 10 driving the square frame 27 to sway is as follows: When the rotary motor 2 rotates, it can drive the feed screw 3 to rotate, and the feed screw 3 can drive the second bevel gear 40 to rotate. The second bevel gear 40 meshes with the first bevel gear 39, which in turn drives the first bevel gear 39, the rotating shaft 37, and the first gear 36 to rotate. The first gear 36 can intermittently mesh with and disengage from the moving rack 35. When the first gear 36 meshes with the moving rack 35, it can move the moving rack 35, the square frame 27, and the moving plate. 41 is pushed to one side and the telescopic spring 42 is stretched. When the first gear 36 is disengaged from the moving rack 35, the moving rack 35, the square frame 27, and the moving plate 41 can be pulled back to their original positions under the tension of the telescopic spring 42. The positioning rod 43 can position the moving rack 35, the square frame 27, and the moving plate 41 to ensure that the first gear 36 meshes with the moving rack 35 next time. It can also make the square frame 27 shake multiple times when the first gear 36 rotates once, resulting in a better vibration effect.

[0021] Refer to the instruction manual appendix Figure 10 The first gear 36 is provided with multiple sets of teeth, which are evenly distributed on the first gear 36. There are gaps between the multiple sets of teeth that can be disconnected from the movable rack 35, which can facilitate the vibration frequency of the square frame 27 to be constant.

[0022] Refer to the instruction manual appendix Figure 1 Instruction manual attached Figure 4 Instruction manual attached Figure 7 Included with instruction manual Figure 9 The negative pressure box 20 includes a square box 44 installed at the lower end of the feed cylinder 4. A suction pipe 45 is installed at the lower end of the square box 44. A sealing plate 46 is installed at one end of the suction pipe 45. A sealing bearing 47 is installed on the sealing plate 46. A suction fan blade 48 is installed inside the suction pipe 45. One end of the suction fan blade 48 passes through the sealing bearing 47 and extends to the outside of the suction pipe 45. A third bevel gear 49 is installed at the end of the suction fan blade 48 located outside the suction pipe 45. A pressure relief gear is installed on one side of the lower end of the feed cylinder 4. Accelerator 50 has a second gear 51 installed at its power input end and a third gear 52 installed at one end of the feed screw 3. The second gear 51 and the third gear 52 mesh. The power output end of the accelerator 50 is connected to a drive shaft 53. The two ends of the drive shaft 53 are equipped with second rolling bearings 54. The second rolling bearings 54 are mounted on the feed cylinder 4 through a connecting rod 55. A fourth bevel gear 56 is installed on the drive shaft 53. The fourth bevel gear 56 meshes with the third bevel gear 49. The air extraction process of the negative pressure box 20 is as follows: When the rotary motor 2 rotates, it can drive the feed screw 3 to rotate. The feed screw 3 can drive the third gear 52 to rotate. The third gear 52 meshes with the second gear 51, which can make the power input end of the accelerator 50 rotate. After being accelerated by the accelerator 50, it can drive the transmission shaft 53 to rotate. The transmission shaft 53 can drive the fourth bevel gear 56 to rotate. The fourth bevel gear 56 meshes with the third bevel gear 49, which can then drive the third bevel gear 49 and the suction fan blade 48 to rotate, thereby extracting the air from the square box 44. The sealing plate 46 can prevent air leakage, and the air can then be discharged through the air outlet pipe 25.

[0023] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 5 The blower box 21 includes a fixed box 57 installed at the lower end of the feed cylinder 4. An air inlet pipe 58 is installed on one side of the lower end of the fixed box 57. A blower fan blade 59 is installed inside the air inlet pipe 58. A fifth bevel gear 60 is installed at one end of the blower fan blade 59. A sixth bevel gear 61 is installed at one end of the drive shaft 53. The fifth bevel gear 60 and the sixth bevel gear 61 mesh. The process of blowing air into the blower box 21 is as follows: When the rotary motor 2 rotates, it can drive the feed screw 3 to rotate. The feed screw 3 can drive the third gear 52 to rotate. The third gear 52 meshes with the second gear 51, which can make the power input end of the accelerator 50 rotate. After being accelerated by the accelerator 50, it can drive the transmission shaft 53 to rotate. The transmission shaft 53 can drive the sixth bevel gear 61 to rotate. The sixth bevel gear 61 meshes with the fifth bevel gear 60, which can then drive the fifth bevel gear 60 and the blower fan blade 59 to rotate. This can draw outside air into the fixed box 57 and enter the feed cylinder 4 through the second air inlet 18.

[0024] Refer to the instruction manual appendix Figure 1 Instruction manual attached Figure 2 Instruction manual attached Figure 3 Instruction manual attached Figure 7 Included with instruction manual Figure 8A sponge conveyor belt 62 is installed inside the feeding channel 14. A square opening 63 is opened at one end of the feeding channel 14. One end of the sponge conveyor belt 62 extends through the square opening 63 to the outside of the feeding channel 14. A conical guide channel 13 guides the material onto the sponge conveyor belt 62. The power output end of the sponge conveyor belt 62 extends to the outside of the feeding channel 14. A seventh bevel gear 64 is installed at the power output end of the sponge conveyor belt 62. An eighth bevel gear 65 is installed at the lower end of the rotating shaft 37. The eighth bevel gear 65 and the seventh bevel gear 64 mesh. When the rotating shaft 37 rotates, it can drive the eighth bevel gear 65 to rotate. The meshing of the eighth bevel gear 65 and the seventh bevel gear 64 can drive the seventh bevel gear 64 and the power input end of the sponge conveyor belt 62 to rotate. PVC granules in the conical guide channel 13 can fall onto the sponge conveyor belt 62. The sponge conveyor belt 62 can absorb the moisture contained in the PVC granules, which can improve the drying efficiency of the PVC granules.

[0025] Refer to the instruction manual appendix Figure 7 A water storage tank 66 is installed on one side of the upper end of the workbench 1. The water storage tank 66 is located below the sponge conveyor belt 62. Multiple squeezing rollers 67 are installed on one side of the upper end of the water storage tank 66. The squeezing rollers 67 can squeeze the sponge conveyor belt 62. When the sponge containing water on the sponge conveyor belt 62 rotates to the side of the squeezing rollers 67, the squeezing rollers 67 can squeeze out the water contained on the sponge conveyor belt 62 and let it fall into the water storage tank 66 for collection.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drying apparatus for processing PVC granules, comprising a workbench (1), a rotary motor (2) mounted on one side of the upper end of the workbench (1), the rotary motor (2) being connected to a feed screw (3), a feed cylinder (4) mounted on the outside of the feed screw (3), the feed screw (3) being rotatable within the feed cylinder (4), a plurality of stirring shafts (5) mounted on the feed screw (3), and a conveyor belt device (6) mounted on the workbench (1) located below the discharge end of the feed cylinder (4), characterized in that, A feeding mechanism is provided above the workbench (1), and a drying mechanism is provided above the workbench (1); The feeding mechanism includes a conical feeding hopper (7) located above the workbench (1). The conical feeding hopper (7) is installed on the workbench (1) via a support rod (8). A screening frame (9) is installed at the lower end of the conical feeding hopper (7). A drive frame (10) is installed at the upper end of the feeding cylinder (4). The drive frame (10) can drive the screening frame (9) to shake. An extrusion plate (11) is provided inside the screening frame (9). A telescopic frame (12) is installed on one side of the screening frame (9). The telescopic frame (12) can drive the extrusion plate (11) to move. A conical guide channel (13) is installed at the lower end of the screening frame (9). A feeding channel (14) is installed at the upper end of the feeding cylinder (4). The lower end of the conical guide channel (13) extends into the feeding channel (14). The air-drying mechanism includes multiple first air inlets (15) located on one side of the upper end of the feed cylinder (4), multiple first air outlets (16) located below the first air inlets (15) and located at the lower end of the feed cylinder (4), multiple second air outlets (17) located on one side of the first air inlets (15) and located at the upper end of the feed cylinder (4), and multiple second air inlets (18) located below the second air outlets (17) and located at the lower end of the feed cylinder (4), and intercepting nets (19) are installed at the first air inlets (15), first air outlets (16), second air outlets (17), and second air inlets (18), and a negative pressure box (20) is installed on one side of the lower end of the feed cylinder (4), the negative pressure box (20) can drain the multiple first air inlets (15) The negative pressure box (20) is equipped with a blower box (21) installed at the lower end of the feed cylinder (4) on one side. The blower box (21) can wrap multiple second air inlets (18). The feed cylinder (4) is equipped with an air outlet box (22) installed at the upper end. The air outlet box (22) can wrap multiple second air outlets (17). A water tank (23) is installed on one side of the upper end of the workbench (1). An exhaust pipe (24) is installed on one side of the air outlet box (22). One end of the exhaust pipe (24) extends into the water tank (23). An air outlet pipe (25) is installed at one end of the negative pressure box (20). One end of the air outlet pipe (25) extends into the water tank (23). The negative pressure box (20) and the blower box (21) are installed on the workbench (1) by a support column (26).

2. The drying apparatus for PVC granule processing according to claim 1, characterized in that, The screening frame (9) includes a square frame (27) located below the conical feed hopper (7). A screening screen (28) is installed at the lower end of the square frame (27). Guide grooves (29) are opened on both sides of the upper end of the square frame (27). Guide blocks (30) are installed on both sides of the lower end of the conical feed hopper (7). One end of the guide block (30) extends into the guide groove (29). A conical guide channel (13) is installed at the lower end of the square frame (27). The telescopic frame (12) includes a fixed plate (31) located on one side of the square frame (27). The fixed plate (31) is installed on the square frame (27) by a fixed rod (32). Multiple electric telescopic rods (33) are installed on the fixed plate (31). Multiple inlets and outlets (34) are opened on one side of the square frame (27). One end of the telescopic rod (33) passes through the inlet and outlet (34) and connects to the extrusion plate (11).

3. A drying apparatus for PVC granule processing according to claim 2, characterized in that, The drive frame (10) includes a movable rack (35) installed on one side of the square frame (27). A first gear (36) is meshed on one side of the movable rack (35). The first gear (36) and the movable rack (35) can be intermittently meshed and disconnected. A rotating shaft (37) is installed at the lower end of the first gear (36). A first rolling bearing (38) is installed at the lower end of the rotating shaft (37). The lower end of the first rolling bearing (38) is installed at the upper end of the feed cylinder (4). A first bevel gear (39) is installed at the lower end of the rotating shaft (37). A second bevel gear (40) is installed at one end of the feed screw (3). The first bevel gear (39) and the second bevel gear (40) mesh. A movable plate (41) is installed on one side of the square frame (27). The movable plate (41) and the conical feed hopper (7) are connected by multiple telescopic springs (42). A positioning rod (43) is installed on the movable plate (41).

4. A drying apparatus for PVC granule processing according to claim 3, characterized in that, The first gear (36) is provided with multiple sets of teeth, which are evenly distributed on the first gear (36), and there are gaps between the multiple sets of teeth that can be disconnected from the movable rack (35).

5. A drying apparatus for PVC granule processing according to claim 1, characterized in that, The negative pressure box (20) includes a square box (44) installed at the lower end of the feed cylinder (4). A suction pipe (45) is installed at the lower end of the square box (44). A sealing plate (46) is installed at one end of the suction pipe (45). A sealing bearing (47) is installed on the sealing plate (46). A suction fan blade (48) is installed inside the suction pipe (45). One end of the suction fan blade (48) extends through the sealing bearing (47) to the outside of the suction pipe (45). A third bevel gear (49) is installed at the end of the suction fan blade (48) located outside the suction pipe (45). A third bevel gear (49) is installed on one side of the lower end of the feed cylinder (4). Accelerator (50), the power input end of accelerator (50) is equipped with a second gear (51), one end of feed screw (3) is equipped with a third gear (52), the second gear (51) and the third gear (52) mesh, the power output end of accelerator (50) is connected to a drive shaft (53), the two ends of drive shaft (53) are equipped with second rolling bearings (54), the second rolling bearings (54) are mounted on feed cylinder (4) through connecting rod (55), the drive shaft (53) is equipped with a fourth bevel gear (56), the fourth bevel gear (56) and the third bevel gear (49) mesh.

6. A drying apparatus for PVC granule processing according to claim 5, characterized in that, The blower box (21) includes a fixed box (57) installed at the lower end of the feed cylinder (4). An air inlet pipe (58) is installed on one side of the lower end of the fixed box (57). A blower fan blade (59) is installed inside the air inlet pipe (58). A fifth bevel gear (60) is installed at one end of the blower fan blade (59), and a sixth bevel gear (61) is installed at one end of the drive shaft (53). The fifth bevel gear (60) and the sixth bevel gear (61) mesh.

7. A drying apparatus for PVC granule processing according to claim 3, characterized in that, A sponge conveyor belt (62) is installed inside the feeding channel (14). A square opening (63) is opened at one end of the feeding channel (14). One end of the sponge conveyor belt (62) extends through the square opening (63) to the outside of the feeding channel (14). A conical guide channel (13) can guide the material onto the sponge conveyor belt (62). The power output end of the sponge conveyor belt (62) extends to the outside of the feeding channel (14). A seventh bevel gear (64) is installed at the power output end of the sponge conveyor belt (62). An eighth bevel gear (65) is installed at the lower end of the rotating shaft (37). The eighth bevel gear (65) and the seventh bevel gear (64) mesh.

8. A drying apparatus for PVC granule processing according to claim 7, characterized in that, A water tank (66) is installed on one side of the upper end of the workbench (1). The water tank (66) is located below the sponge conveyor belt (62). Multiple extrusion rollers (67) are installed on one side of the upper end of the water tank (66). The extrusion rollers (67) can extrude the sponge conveyor belt (62).

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