Plastic pipe extrusion device using PVC waste

Abstract

The utility model discloses a kind of plastic pipe extrusion devices using PVC waste, belong to plastic extrusion production technical field, including bed, the bed top surface is equipped with machine cylinder, the machine cylinder top surface is equipped with feed hopper, the machine cylinder inside is equipped with screw rod;In the utility model, by setting exhaust component, through the design, it is realized in the process when extruding production, can be through first vent hole, second vent hole and exhaust seat exhaust to machine cylinder inside, and second vent hole can be opened to assist exhaust when first vent hole produces blockage, to reduce the influence caused by vent hole blockage Ensure that gas can be smoothly discharged, simultaneously, if first vent hole and second vent hole all produce blockage, then the position of exhaust seat can be changed first vent hole and second vent hole corresponding to it, and then corresponding adjustment is provided time for staff, to reduce the influence caused by vent hole blockage, guarantee the smooth progress of extrusion production.

Description

Technical Field

[0001] This invention belongs to the field of plastic extrusion production technology, and in particular relates to a plastic pipe extrusion device that utilizes PVC waste. Background Technology

[0002] PVC plastic is one of the most common plastics in daily life. It has good flame retardancy and is inexpensive, and is often used for pipes, wire insulation and daily necessities. After recycling, PVC plastic can be processed again for use in the production of plastic pipes. Since recycled PVC can directly replace virgin resin, it can reduce dependence on petroleum raw materials and achieve resource recycling.

[0003] In the production process of plastic pipes using recycled PVC waste, some gas is generated during the extrusion process due to the heating and melting of the raw material. Therefore, it is necessary to use venting holes to expel the gas. However, due to factors such as excessive pressure in the barrel, the material can easily enter the venting holes and cause blockage, thus preventing the gas from being discharged and affecting the molding quality. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that excessive pressure in the barrel can easily cause blockage of the exhaust port, resulting in a decline in molding quality. Therefore, this invention proposes a plastic pipe extrusion device using PVC waste.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a plastic pipe extrusion device utilizing PVC waste, comprising a base, a barrel on the top surface of the base, a feed hopper on the top surface of the barrel, a screw inside the barrel, and further comprising:

[0006] An exhaust assembly includes a mounting base embedded in the top opening of the barrel, an exhaust seat slidably mounted on the top of the mounting base, and two air inlets at the bottom of the exhaust seat, through which the gas inside the barrel is discharged;

[0007] A blocking assembly includes a mounting sleeve disposed in a groove on the inner wall of the barrel, and a partition is rotatably mounted on one side of the mounting sleeve. The partition extends to different areas to adjust the flow rate of the material inside the barrel.

[0008] The cleaning assembly includes a fixed frame installed on one side of the mounting sleeve, and a cleaning strip is installed on one side of the fixed frame, with the cleaning strip adhering to the surface of the partition.

[0009] As a further description of the above technical solution:

[0010] The exhaust assembly further includes: a first vent hole, which is opened inside the mounting base, and multiple first vent holes are arranged linearly;

[0011] The second vent is located inside the mounting base and is situated on one side of the first vent. The second vent corresponds to the first vent and is respectively aligned with the two air inlets at the bottom of the exhaust seat. The connection between the first and second vents and the exhaust seat is used to discharge the gas inside the barrel.

[0012] A connecting rod is rotatably installed in the through hole inside the mounting base, and the connecting rod is located on one side of the first vent hole.

[0013] As a further description of the above technical solution:

[0014] The exhaust assembly further includes a rotating plate, which is installed at the bottom of the connecting rod and corresponds to the first vent hole. The rotating plate is rotated by the connecting rod to control the opening and closing of the first vent hole.

[0015] The first gear is mounted on the top of the connecting rod;

[0016] Two racks are installed on the side wall of the groove at the bottom of the exhaust seat, and the groove corresponds to the first gear. The two racks are centrally symmetrical about the first gear. Both racks mesh with the first gear. The movement of the racks drives the first gear to rotate and controls the opening and closing of the first vent.

[0017] A sliding frame is slidably installed inside the mounting base. One end of the sliding frame is provided with a stop block located inside the first vent hole. A grid hole is opened on one side of the stop block, and the bottom surface of the stop block is inclined. The other end of the sliding frame is located inside the second vent hole, and a through hole corresponding to the second vent hole is opened inside the sliding frame. The movement of the sliding frame is used to control the opening and closing of the second vent hole.

[0018] As a further description of the above technical solution:

[0019] The exhaust assembly further includes: a compression seat, which is slidably mounted inside the mounting base and located on one side of the sliding frame;

[0020] The first spring is installed in a groove on one side of the extrusion seat, and the other end of the first spring is fixedly connected to the mounting seat. The extrusion seat is pushed by the first spring to push the sliding frame to reset.

[0021] The insert plate is slidably installed in the internal groove of the exhaust seat and the mounting seat, and the bottom end of the insert plate contacts the groove on the top surface of the extrusion seat, and the contact surface is inclined. The extrusion seat is pushed to move by the extrusion plate and the first spring is compressed.

[0022] As a further description of the above technical solution:

[0023] The exhaust assembly further includes: a fixed rail, which is installed on the top of the barrel and located on both sides of the exhaust seat;

[0024] A fixing pin is inserted into one side of the fixed rail, and the exhaust seat and the insert plate are both provided with through holes corresponding to the fixing pin. The connection between the fixing pin and the exhaust seat, the insert plate and the fixed rail is used to limit the exhaust seat and the insert plate.

[0025] As a further description of the above technical solution:

[0026] The blocking assembly further includes: a pressing block, which is slidably installed in a groove on one side of the mounting sleeve, and one side of the pressing block abuts against one side of the partition. The pressing block moves into the mounting sleeve and presses against the partition to push the partition outward.

[0027] The connecting plate has one end hinged to one side of the partition plate, and the connecting plate is slidably connected to the groove on one side of the extrusion block through a connecting shaft at the other end. The extrusion block moves outward so that the connecting plate can pull the partition plate into the mounting sleeve.

[0028] As a further description of the above technical solution:

[0029] The blocking assembly further includes: a spiral rod, one end of which is installed on the outer wall of the extrusion block, and the outer wall of the spiral rod is provided with a spiral groove;

[0030] A connecting sleeve is fitted onto the outer wall of the screw rod, and the connecting sleeve has a spiral strip inside that corresponds to the spiral groove on the outer wall of the screw rod. By rotating the connecting sleeve, the spiral strip squeezes the spiral groove on the outer wall of the screw rod to drive the screw rod to move, thereby driving the extrusion block to move.

[0031] A fixed seat is installed on the inner wall of the barrel, with one side of the fixed seat flush with the circular inner wall of the barrel, and the connecting sleeve passes through the through hole on one side of the fixed seat.

[0032] As a further description of the above technical solution:

[0033] The blocking assembly further includes: a swing gate, which is rotatably mounted in a groove on one side of the fixed base, and teeth are installed on one side of the swing gate;

[0034] The second gear is installed on the outer wall of the connecting sleeve and meshes with the teeth. The swing of the swing grid drives the second gear to rotate, thereby driving the connecting sleeve to rotate and adjusting the extension and retraction of the partition.

[0035] A torsion spring is sleeved on the outer wall of the other end of the connecting sleeve, and the outer side of the torsion spring is fixedly connected to the inner wall of the fixed seat.

[0036] As a further description of the above technical solution:

[0037] The cleaning assembly further includes: a shovel plate, which is disposed on one side of the fixed frame. A base plate is installed at the bottom end of the shovel plate, and the base plate is slidably disposed in a groove on one side of the fixed frame. The top end of the shovel plate contacts the bottom surface of the partition plate. The shovel plate cleans the bottom surface of the partition plate when the partition plate retracts.

[0038] A guide rod is mounted on the surface of the base plate and is slidably disposed within a through hole inside the fixed frame;

[0039] The second spring is sleeved on the outer wall of the guide rod, and its two ends are fixedly connected to the base plate and the fixed frame respectively. The second spring is in a stretched state, and the tension of the second spring ensures that the top of the shovel plate is in close contact with the bottom surface of the partition.

[0040] As a further description of the above technical solution:

[0041] The cleaning assembly further includes a baffle, which is located on one side of the shovel plate and one end of the baffle is fixedly connected to the fixed frame, and the outer side of the baffle is the same arc surface as the inner wall of the barrel.

[0042] A sealing seat is installed on one side of the bottom surface of the shovel plate, and the sealing seat is located in a groove on one side of the baffle plate;

[0043] A sealing column is disposed in a groove on one side of the sealing seat, and the outer wall of the sealing column is in contact with the inner wall of the baffle groove.

[0044] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0045] 1. In this invention, by setting up an exhaust assembly, the design enables the exhaust of gas from inside the barrel during the extrusion production process through the first vent, the second vent, and the exhaust seat. Furthermore, when the first vent becomes blocked, the second vent can be opened for auxiliary exhaust, thereby reducing the impact of vent blockage and ensuring smooth gas discharge. If both the first and second vents become blocked, the position of the exhaust seat can be changed to alter the corresponding first and second vents, providing time for workers to make adjustments and further minimizing the impact of vent blockage, thus ensuring the smooth operation of extrusion production.

[0046] 2. In this invention, by setting up a blocking component, the protruding area of ​​the baffle is changed according to the different forces exerted by the material on the swing grid during the material conveying process by the screw. This reduces the material flow rate when there is a large amount of solid material, and reduces the blocking area to accelerate the flow rate when the material is in a molten transition. This avoids the situation where the pores between materials are locked due to a large amount of solid material, which affects the discharge of gas inside the material. At the same time, it avoids the situation where the material is over-melted and forms a pore around the gas, which would affect the gas discharge. This ensures that the gas can be discharged smoothly to the outside, thereby ensuring the forming quality of the pipeline.

[0047] 3. In this invention, by setting up a cleaning component, the surface of the partition can be cleaned by the cleaning strip and the shovel during the partition's retraction process. This prevents material from entering the mounting sleeve along with the partition, which would prevent it from turning out smoothly during subsequent use. At the same time, the second spring ensures that the shovel is in close contact with the bottom arc surface of the partition. The sealing seat and sealing column can seal the gap between the shovel and the baffle, preventing material from entering and affecting the movement of the shovel. Since the sealing column is a column, it can reduce the friction during the movement process, ensuring that the shovel can slide smoothly while maintaining a sealed state. Attached Figure Description

[0048] Figure 1 This is a three-dimensional structural diagram of a plastic pipe extrusion device that utilizes PVC waste.

[0049] Figure 2 This is a schematic diagram showing the disassembled structure of a plastic pipe extrusion device that utilizes PVC waste.

[0050] Figure 3 This is a schematic diagram showing the disassembled structure of the exhaust assembly in a plastic pipe extrusion device that utilizes PVC waste.

[0051] Figure 4 This is a cross-sectional schematic diagram of the exhaust assembly in a plastic pipe extrusion device that utilizes PVC waste.

[0052] Figure 5 This is a schematic diagram of the bottom structure of the exhaust seat in a plastic pipe extrusion device that utilizes PVC waste.

[0053] Figure 6 This is a schematic diagram showing the disassembled structure of a blocking component in a plastic pipe extrusion device that utilizes PVC waste.

[0054] Figure 7 This is a schematic diagram of another angle of the blocking component in a plastic pipe extrusion device that utilizes PVC waste.

[0055] Figure 8This is a cross-sectional schematic diagram of a cleaning component in a plastic pipe extrusion device that utilizes PVC waste.

[0056] Figure 9 for Figure 8 A magnified structural diagram of part A in the middle.

[0057] Figure 10 This is a schematic diagram of the combined structure of a fixed frame and a partition in a plastic pipe extrusion device that utilizes PVC waste.

[0058] Legend:

[0059] 1. Base; 2. Barrel; 3. Feed hopper; 4. Exhaust assembly; 401. Fixed rail; 402. Exhaust seat; 403. Insert plate; 404. Fixing pin; 405. First gear; 406. Connecting rod; 407. Sliding frame; 408. Rotating plate; 409. Extrusion seat; 410. First spring; 411. Mounting seat; 412. First vent; 413. Second vent; 414. Rack; 5. Screw; 6. Blocking assembly; 601. Swing 602. Grid; 603. Fixing seat; 604. Connecting sleeve; 605. Spiral rod; 606. Extrusion block; 607. Connecting plate; 608. Partition plate; 609. Mounting sleeve; 610. Tooth; 611. Second gear; 612. Torsion spring; 7. Cleaning assembly; 701. Fixing frame; 702. Cleaning strip; 703. Shovel plate; 704. Guide rod; 705. Second spring; 706. Base plate; 707. Baffle; 708. Sealing seat; 709. Sealing column. Detailed Implementation

[0060] 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, and 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.

[0061] Please see Figures 1-10 The present invention provides a technical solution: a plastic pipe extrusion device utilizing PVC waste, comprising a base 1, a barrel 2 disposed on the top surface of the base 1, a feed hopper 3 disposed on the top surface of the barrel 2, and a screw 5 disposed inside the barrel 2, and further comprising:

[0062] The exhaust assembly 4 includes a mounting base 411 embedded in the top opening of the barrel 2, an exhaust seat 402 slidably mounted on the top of the mounting base 411, and two air inlets at the bottom of the exhaust seat 402, through which the gas inside the barrel 2 is discharged.

[0063] The blocking component 6 includes a mounting sleeve 608 disposed in a groove on the inner wall of the barrel 2. A partition 607 is rotatably mounted on one side of the mounting sleeve 608. The partition 607 extends to different areas to adjust the material flow rate inside the barrel 2.

[0064] Cleaning component 7 includes a fixing frame 701 installed on one side of the mounting sleeve 608, a cleaning strip 702 installed on one side of the fixing frame 701, and the cleaning strip 702 is in contact with the surface of the partition 607.

[0065] like Figures 3-5 As shown, the exhaust assembly 4 also includes: a first vent 412, a second vent 413, and a connecting rod 406;

[0066] The first vent 412 is opened inside the mounting base 411, and there are multiple first vents 412 arranged linearly. The second vent 413 is opened inside the mounting base 411, and the second vent 413 is located on one side of the first vent 412. The second vent 413 corresponds to the first vent 412, and the first vent 412 and the second vent 413 correspond to the two air inlets at the bottom of the exhaust seat 402, respectively. The connection between the first vent 412 and the second vent 413 and the exhaust seat 402 is used to discharge the gas inside the barrel 2. The connecting rod 406 is rotatably installed in the through hole inside the mounting base 411, and the connecting rod 406 is located on one side of the first vent 412.

[0067] The exhaust assembly 4 also includes: a rotating plate 408, a first gear 405, a rack 414, and a sliding frame 407;

[0068] A rotating plate 408 is installed at the bottom end of the connecting rod 406, and the rotating plate 408 corresponds to the first vent 412. The rotating plate 408 is driven to rotate by the connecting rod 406 to control the opening and closing of the first vent 412. A first gear 405 is installed at the top end of the connecting rod 406. Two racks 414 are installed on the side wall of the groove at the bottom end of the exhaust seat 402, and the groove corresponds to the first gear 405. The two racks 414 are centrally symmetrical about the first gear 405, and both racks 414 mesh with the first gear 405. The rotation of the racks 414... The sliding frame 407 is slidably installed inside the mounting base 411. One end of the sliding frame 407 is provided with a stop block, which is located inside the first vent 412. A grid hole is opened on one side of the stop block, and the bottom surface of the stop block is inclined. The other end of the sliding frame 407 is located inside the second vent 413, and a through hole corresponding to the second vent 413 is opened inside the sliding frame 407. The movement of the sliding frame 407 is used to control the opening and closing of the second vent 413.

[0069] The exhaust assembly 4 also includes: a compression seat 409, a first spring 410, and a insert plate 403;

[0070] The extrusion seat 409 is slidably installed inside the mounting seat 411, and the extrusion seat 409 is located on one side of the sliding frame 407. The first spring 410 is installed in the groove on one side of the extrusion seat 409, and the other end of the first spring 410 is fixedly connected to the mounting seat 411. The extrusion seat 409 is pushed by the first spring 410 to push the sliding frame 407 to reset. The insert plate 403 is slidably installed in the groove inside the exhaust seat 402 and the mounting seat 411, and the bottom end of the insert plate 403 contacts the groove on the top surface of the extrusion seat 409, and the contact surface is inclined. The extrusion seat 409 is pushed by the insert plate 403 to move and compress the first spring 410.

[0071] The exhaust assembly 4 also includes: a fixed rail 401 and a fixed pin 404;

[0072] The fixed rail 401 is installed at the top of the barrel 2 and is located on both sides of the exhaust seat 402. The fixing pin 404 is inserted into one side of the fixed rail 401. The exhaust seat 402 and the insert plate 403 are both provided with through holes corresponding to the fixing pin 404. The connection between the fixing pin 404 and the exhaust seat 402, the insert plate 403 and the fixed rail 401 is used to limit the exhaust seat 402 and the insert plate 403.

[0073] Specifically: During the extrusion production process, the exhaust seat 402 can be moved above a set of first vent holes 412 and second vent holes 413, so that the exhaust seat 402 is connected to the first vent holes 412 and second vent holes 413. During the movement of the exhaust seat 402, the rack 414 on one side of the groove at the bottom of the exhaust seat 402 will mesh with the first gear 405, thereby driving the first gear 405 to rotate. This drives the rotating plate 408 to rotate through the connecting rod 406, so that the corresponding first vent hole 412 is connected to the inside of the barrel 2 for exhaust.

[0074] Furthermore, during the venting process, since the stop block at one end of the sliding frame 407 is located inside the first vent hole 412 and a grid hole is provided on one side of the stop block, the gas can pass through the grid hole and enter the vent seat 402 for discharge. At the same time, if molten plastic enters the first vent hole 412, since the bottom end of the stop block at one end of the sliding frame 407 is inclined, the plastic will contact the bottom end of the stop block after entering, thereby pushing the sliding frame 407 to move.

[0075] Furthermore, as the sliding frame 407 moves, its other end can move to the bottom of the mounting base 411, and the through hole inside the sliding frame 407 can correspond to the second vent hole 413, thereby increasing the exhaust capacity through the second vent hole 413 to reduce the impact caused by the blockage of the first vent hole 412.

[0076] Furthermore, if the second vent 413 is also blocked, the fixing pin 404 can be pulled out and the insert plate 403 can be pulled out, so that the compression seat 409 can push the sliding frame 407 under the action of the first spring 410 without the insert plate 403 blocking it, thereby causing the sliding frame 407 to reset and re-seal the bottom of the second vent 413.

[0077] Furthermore, the movable exhaust seat 402 is connected to another set of first vent holes 412 and second vent holes 413. Since the rack 414 is centrally symmetrical, when the exhaust seat 402 slides, the first gear 405 corresponding to the blocked first vent hole 412 can be reversed, thereby re-blocking the first vent hole 412 through the rotating plate 408.

[0078] Furthermore, after the exhaust seat 402 is moved, the insert plate 403 can be reinserted to press the corresponding compression seat 409, causing it to separate from the sliding frame 407, and the exhaust seat 402 and the insert plate 403 can be fixed and limited again by the fixing pin 404.

[0079] like Figure 6 , Figure 7 As shown, the blocking assembly 6 also includes: a pressing block 605 and a connecting plate 606;

[0080] The extrusion block 605 is slidably installed in the groove on one side of the mounting sleeve 608, and one side of the extrusion block 605 abuts against one side of the partition 607. The extrusion block 605 moves into the mounting sleeve 608 and extrudes the partition 607 to push the partition 607 outward. One end of the connecting plate 606 is hinged to one side of the partition 607, and the connecting plate 606 is slidably connected to the groove on one side of the extrusion block 605 through the connecting shaft provided at the other end. The extrusion block 605 moves outward so that the connecting plate 606 can pull the partition 607 into the mounting sleeve 608 to retract.

[0081] The blocking assembly 6 also includes: a helical rod 604, a connecting sleeve 603, and a fixing seat 602;

[0082] One end of the screw rod 604 is installed on the outer wall of the extrusion block 605, and the outer wall of the screw rod 604 is provided with a spiral groove. The connecting sleeve 603 is sleeved on the outer wall of the screw rod 604, and the connecting sleeve 603 is provided with a spiral strip corresponding to the spiral groove on the outer wall of the screw rod 604. By rotating the connecting sleeve 603, the spiral strip squeezes the spiral groove on the outer wall of the screw rod 604 to drive the screw rod 604 to move, which in turn drives the extrusion block 605 to move. The fixed seat 602 is installed on the inner wall of the barrel 2, and one side of the fixed seat 602 is flush with the circular inner wall of the barrel 2. The connecting sleeve 603 passes through the through hole on one side of the fixed seat 602.

[0083] The blocking assembly 6 also includes: a swing gate 601, a second gear 610, and a torsion spring 611;

[0084] The swing gate 601 is rotatably installed in a groove on one side of the fixed base 602. A tooth 609 is installed on one side of the swing gate 601. The second gear 610 is installed on the outer wall of the connecting sleeve 603 and meshes with the tooth 609. The swing of the swing gate 601 drives the second gear 610 to rotate through the tooth 609, thereby driving the connecting sleeve 603 to rotate and adjust the extension and retraction of the partition 607. The torsion spring 611 is sleeved on the outer wall of the other end of the connecting sleeve 603, and the outer side of the torsion spring 611 is fixedly connected to the inner wall of the fixed base 602.

[0085] Specifically: During the process of conveying materials by screw 5, under normal circumstances, the swing grid 601 is in the molten material and is at a certain angle. If the material is not completely melted, when the solid material comes into contact with the swing grid 601, the force exerted by the material on the swing grid 601 is relatively large, which causes the swing grid 601 to rotate to a certain extent. In this way, the teeth 609 drive the second gear 610 to rotate.

[0086] Furthermore, as the second gear 610 rotates, it can drive the connecting sleeve 603 to rotate. Then, by utilizing the connection between the spiral strip inside the connecting sleeve 603 and the spiral groove on the outer wall of the spiral rod 604, the spiral rod 604 is pushed to move, and the extrusion block 605 is pushed into the mounting sleeve 608. This pushes the partition 607 to rotate outward gradually. Since the partition 607 is placed horizontally inside the barrel 2, it can slow down the flow rate of the material, thereby ensuring that the material can melt smoothly and avoiding the impact caused by the inability of gas inside the material to be discharged in time.

[0087] Furthermore, if the material is over-melted, the torsion spring 611 can drive the connecting sleeve 603 and the second gear 610 to rotate, thereby changing the angle of the swing grid 601, and causing the spiral rod 604 to contract, and driving the extrusion block 605 to move outward of the mounting sleeve 608. Through the connection between the connecting plate 606, the partition plate 607, and the extrusion block 605, the partition plate 607 can be driven to contract inward, thereby ensuring that the material can flow quickly.

[0088] like Figures 8-10 As shown, the cleaning assembly 7 also includes: a scraper 703, a guide rod 704, and a second spring 705;

[0089] A shovel plate 703 is disposed on one side of a fixed frame 701. A base plate 706 is installed at the bottom end of the shovel plate 703, and the base plate 706 is slidably disposed in a groove on one side of the fixed frame 701. The top end of the shovel plate 703 is in contact with the bottom surface of the partition plate 607. The bottom surface of the partition plate 607 is cleaned by the shovel plate 703 when the partition plate 607 retracts. A guide rod 704 is installed on the surface of the base plate 706 and is slidably disposed in a through hole inside the fixed frame 701. A second spring 705 is sleeved on the outer wall of the guide rod 704, and the two ends of the second spring 705 are fixedly connected to the base plate 706 and the fixed frame 701 respectively. The second spring 705 is in a stretched state. The tension of the second spring 705 ensures that the top end of the shovel plate 703 is in close contact with the bottom surface of the partition plate 607.

[0090] Cleaning component 7 also includes: baffle 707, sealing seat 708, and sealing post 709;

[0091] The baffle 707 is located on one side of the shovel 703, and one end of the baffle 707 is fixedly connected to the fixed frame 701. The outer side of the baffle 707 is the same arc surface as the inner wall of the barrel 2. The sealing seat 708 is installed on one side of the bottom surface of the shovel 703, and the sealing seat 708 is located in the groove on one side of the baffle 707. The sealing column 709 is set in the groove on one side of the sealing seat 708, and the outer wall of the sealing column 709 is in contact with the inner wall of the groove of the baffle 707.

[0092] Specifically: During the extension and retraction of the partition 607, as the partition 607 retracts, the cleaning strip 702 contacts the upper surface and outer circular surface of the partition 607, thus scraping the upper surface and outer circular surface of the partition 607 to prevent material from entering the mounting sleeve 608 along with the partition 607. Furthermore, since the bottom surface of the partition 607 is curved, when the material is squeezed against the bottom surface of the partition 607, it can flow to one side and reduce adhesion to the partition 607.

[0093] Furthermore, during the shrinking process of the partition 607, the arc surface at the bottom of the partition 607 can be cleaned by the scraper 703. As the partition 607 shrinks, the second spring 705 can pull the scraper 703 upward to ensure that the scraper 703 is in close contact with the bottom of the partition 607.

[0094] Furthermore, since a sealing seat 708 and a sealing post 709 are provided on one side of the bottom end of the shovel plate 703, the gap between the shovel plate 703 and the baffle 707 can be sealed by the sealing seat 708 and the sealing post 709 during the movement of the shovel plate 703. And since the sealing post 709 is a column, the friction between it and the baffle 707 can be reduced.

[0095] Working Principle: During the extrusion process, the gas inside the barrel 2 can be discharged through the connection between the exhaust seat 402 and the first vent 412. If material enters the first vent 412, it will compress the stop block at one end of the sliding frame 407, causing the sliding frame 407 to move. This allows the internal through-hole of the sliding frame 407 to align with and connect to the second vent 413. If both the first and second vents 412 are blocked, the exhaust seat 402 can be slid to change the corresponding first and second vents 412 and 413. Simultaneously, during the material conveying process by the screw 5, the flow can be adjusted according to the relationship between the screw and the oscillating mechanism. The materials in different states that come into contact with the moving grid 601 exert different forces on the swing grid 601, causing the swing grid 601 to be at different angles. This, in turn, drives the connecting sleeve 603 to rotate through the connection between the tooth 609 and the second gear 610. This, in turn, drives the extrusion block 605 to move through the screw rod 604, thereby adjusting the protruding area of ​​the partition 607. During the shrinking process of the partition 607, the cleaning strip 702 can clean the upper surface and outer circular surface of the partition 607, and the scraper 703 can clean the bottom surface of the partition 607. The sealing seat 708 and the sealing post 709 are used to seal the gap between the baffle 707 and the scraper 703.

[0096] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A plastic pipe extrusion device utilizing PVC waste, comprising: A base (1) is provided with a machine cylinder (2) on its top surface, a feed hopper (3) is provided on the top surface of the machine cylinder (2), and a screw (5) is provided inside the machine cylinder (2). The machine cylinder (2) is characterized by further comprising: The exhaust assembly (4) includes a mounting base (411) embedded in the top opening of the barrel (2), an exhaust seat (402) is slidably mounted on the top of the mounting base (411), and the bottom of the exhaust seat (402) is provided with two air inlets, through which the gas inside the barrel (2) is discharged; The blocking assembly (6) includes a mounting sleeve (608) provided in a groove on the inner wall of the barrel (2). A partition (607) is rotatably mounted on one side of the mounting sleeve (608). The partition (607) extends out to different areas to adjust the flow rate of the material inside the barrel (2). The cleaning component (7) includes a fixed frame (701) installed on one side of the mounting sleeve (608), and a cleaning strip (702) is installed on one side of the fixed frame (701), and the cleaning strip (702) is in contact with the surface of the partition (607).

2. The plastic pipe extrusion device utilizing PVC waste according to claim 1, characterized in that, The exhaust assembly (4) also includes: The first vent (412) is opened inside the mounting base (411), and there are multiple first vents (412) arranged linearly. The second vent (413) is opened inside the mounting base (411) and is located on one side of the first vent (412). The second vent (413) corresponds to the first vent (412), and the first vent (412) and the second vent (413) correspond to the two air inlets at the bottom of the exhaust seat (402). The connection between the first vent (412) and the second vent (413) and the exhaust seat (402) is used to discharge the gas inside the barrel (2). The connecting rod (406) is rotatably installed in the through hole inside the mounting base (411), and the connecting rod (406) is located on one side of the first vent hole (412).

3. The plastic pipe extrusion device utilizing PVC waste according to claim 2, characterized in that, The exhaust assembly (4) also includes: A rotating plate (408) is installed at the bottom of a connecting rod (406) and corresponds to the first vent (412). The rotating plate (408) is rotated by the connecting rod (406) to control the opening and closing of the first vent (412). The first gear (405) is mounted on the top of the connecting rod (406); Two racks (414) are installed on the side wall of the groove at the bottom of the exhaust seat (402), and the groove corresponds to the first gear (405). The two racks (414) are centrally symmetrical about the first gear (405). Both racks (414) mesh with the first gear (405). The movement of the racks (414) drives the first gear (405) to rotate and controls the opening and closing of the first vent (412). The sliding frame (407) is slidably installed inside the mounting base (411). One end of the sliding frame (407) is provided with a stop block, which is located inside the first vent (412). A grid hole is opened on one side of the stop block, and the bottom surface of the stop block is inclined. The other end of the sliding frame (407) is located inside the second vent (413), and a through hole corresponding to the second vent (413) is opened inside the sliding frame (407). The movement of the sliding frame (407) is used to control the opening and closing of the second vent (413).

4. The plastic pipe extrusion device utilizing PVC waste according to claim 3, characterized in that, The exhaust assembly (4) also includes: The extrusion seat (409) is slidably mounted inside the mounting base (411) and is located on one side of the sliding frame (407); The first spring (410) is installed in a groove on one side of the extrusion seat (409), and the other end of the first spring (410) is fixedly connected to the mounting seat (411). The extrusion seat (409) is pushed by the first spring (410) to push the sliding frame (407) to reset. Insert plate (403) is slidably installed in the groove inside the exhaust seat (402) and the mounting seat (411), and the bottom end of the insert plate (403) contacts the groove on the top surface of the extrusion seat (409), and the contact surface is inclined. The extrusion seat (409) is pushed by the insert plate (403) to move and compress the first spring (410).

5. A plastic pipe extrusion device utilizing PVC waste according to claim 4, characterized in that, The exhaust assembly (4) also includes: Fixed rail (401) is installed at the top of the barrel (2) and the fixed rail (401) is located on both sides of the exhaust seat (402); A fixing pin (404) is inserted into one side of the fixing rail (401), and the exhaust seat (402) and the insert plate (403) are both provided with through holes corresponding to the fixing pin (404). The connection between the fixing pin (404) and the exhaust seat (402), the insert plate (403) and the fixing rail (401) is used to limit the exhaust seat (402) and the insert plate (403).

6. The plastic pipe extrusion device utilizing PVC waste according to claim 1, characterized in that, The blocking component (6) further includes: The extrusion block (605) is slidably installed in a groove on one side of the mounting sleeve (608), and one side of the extrusion block (605) abuts against one side of the partition (607). The extrusion block (605) moves into the mounting sleeve (608) and extrudes the partition (607) to push the partition (607) outward. Connecting plate (606), one end of which is hinged to one side of partition plate (607), and the connecting plate (606) is slidably connected to the groove on one side of extrusion block (605) through the connecting shaft provided at the other end. The extrusion block (605) moves outward so that the connecting plate (606) can pull the partition plate (607) to retract into the mounting sleeve (608).

7. A plastic pipe extrusion device utilizing PVC waste according to claim 6, characterized in that, The blocking component (6) further includes: A spiral rod (604) is provided, one end of which is installed on the outer wall of the extrusion block (605), and the outer wall of the spiral rod (604) is provided with a spiral groove; A connecting sleeve (603) is sleeved on the outer wall of the spiral rod (604), and the connecting sleeve (603) is provided with a spiral strip inside that corresponds to the spiral groove on the outer wall of the spiral rod (604). By rotating the connecting sleeve (603), the spiral strip squeezes the spiral groove on the outer wall of the spiral rod (604) to drive the spiral rod (604) to move, which in turn drives the extrusion block (605) to move. The fixing seat (602) is installed on the inner wall of the barrel (2), and one side of the fixing seat (602) is flush with the circular inner wall of the barrel (2), and the connecting sleeve (603) passes through the through hole on one side of the fixing seat (602).

8. A plastic pipe extrusion device utilizing PVC waste according to claim 7, characterized in that, The blocking component (6) further includes: A swing gate (601) is rotatably mounted in a groove on one side of a fixed base (602), and teeth (609) are installed on one side of the swing gate (601). The second gear (610) is installed on the outer wall of the connecting sleeve (603), and the second gear (610) meshes with the teeth (609). By swinging the swing gate (601), the teeth (609) drive the second gear (610) to rotate, thereby driving the connecting sleeve (603) to rotate and adjust the extension and retraction of the partition (607). Torsion spring (611) is sleeved on the outer wall of the other end of the connecting sleeve (603), and the outer side of the torsion spring (611) is fixedly connected to the inner wall of the fixing seat (602).

9. A plastic pipe extrusion device utilizing PVC waste according to claim 1, characterized in that, The cleaning component (7) also includes: A shovel plate (703) is provided on one side of a fixed frame (701). A base plate (706) is installed at the bottom end of the shovel plate (703), and the base plate (706) is slidably disposed in a groove on one side of the fixed frame (701). The top end of the shovel plate (703) is in contact with the bottom surface of the partition plate (607). The bottom surface of the partition plate (607) is cleaned by the shovel plate (703) when the partition plate (607) retracts. Guide rod (704), the guide rod (704) is installed on the surface of the base plate (706), and the guide rod (704) is slidably disposed in the through hole inside the fixed frame (701); The second spring (705) is sleeved on the outer wall of the guide rod (704), and the two ends of the second spring (705) are fixedly connected to the bottom plate (706) and the fixed frame (701) respectively. The second spring (705) is in a stretched state, and the tension of the second spring (705) ensures that the top of the shovel plate (703) is in close contact with the bottom surface of the partition plate (607).

10. A plastic pipe extrusion device utilizing PVC waste according to claim 9, characterized in that, The cleaning component (7) also includes: Baffle (707), the baffle (707) is located on one side of the shovel plate (703), and one end of the baffle (707) is fixedly connected to the fixed frame (701), and the outer side of the baffle (707) is the same arc surface as the inner wall of the barrel (2); A sealing seat (708) is installed on one side of the bottom surface of the shovel plate (703), and the sealing seat (708) is located in the groove on one side of the baffle plate (707); The sealing column (709) is disposed in a groove on one side of the sealing seat (708), and the outer wall of the sealing column (709) is in contact with the inner wall of the groove of the baffle (707).

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