Forced vacuum device and method

Abstract

The forced vacuum device is started through a driving part, the power of the forced vacuum device is transmitted to a countering assembly in a connecting cylinder through a kinetic energy conversion assembly in a receiving box, and the bottom end of the countering assembly continuously rotates in a tail cavity of an extruder; meanwhile, the vacuum generating chamber establishes and maintains stable negative pressure through the connecting cylinder under the action of an external vacuum system so as to pump out gas in the materials. The continuously rotating counter component forms a mechanical barrier at the negative pressure extraction opening, and actively stirs and obstructs the plasticized material brought up by airflow, so that the material is effectively prevented from being sucked into a vacuum pipeline while high-efficiency vacuum pumping is performed, and the problem that the plasticized material is easily pumped into the pipeline when an existing vacuum device is in a negative pressure generation state, and the working efficiency is reduced is solved. And normal operation is influenced.

Description

Technical Field

[0001] This invention relates to the field of vacuum technology, and more particularly to a forced vacuum device and method. Background Technology

[0002] After the material has undergone initial plasticization, the extruder uses a vacuum pump to create a negative pressure environment in the exhaust section of the barrel. When the melt containing impurities such as water vapor, air, and low-molecular-weight volatiles flows through this section, these gaseous impurities will rapidly escape from the melt, expand, and be forcibly removed by the vacuum pump due to the sudden drop in external pressure.

[0003] Currently, during extruder operation, the vacuum device buffers water vapor and low-molecular-weight volatile substances generated during plasticization in the extruder pipeline, and discharges them to the waste gas tank through the vacuum exhaust chamber, collecting and treating the harmful gases generated by the extruder. However, when the vacuum device generates negative pressure, it can easily draw plasticized material into the pipeline, affecting normal operation. Summary of the Invention

[0004] This application provides a forced vacuum device and method to solve the technical problem that existing vacuum devices, when generating negative pressure, easily draw plasticized materials into the pipeline, affecting normal operation.

[0005] In view of this, this application provides a forced vacuum device, comprising: a drive unit, an output end of which is connected to a receiving box, a connecting cylinder at the bottom of the receiving box, a vacuum generating chamber passing through the connecting cylinder, the vacuum generating chamber being connected to an external vacuum system, the bottom of the connecting cylinder being used to connect to the tail end of an extruder, a kinetic energy conversion component inside the receiving box being connected to the drive unit, and a counteracting component inside the connecting cylinder being connected to the other end of the kinetic energy rotating ring component, wherein the bottom end of the counteracting component extends into the tail end cavity of the extruder and rotates continuously after being started by the drive unit.

[0006] Optionally, the drive unit includes a drive motor and a gearbox, the output end of the drive motor is connected to the gearbox, the bottom of the gearbox is fixed to the receiving box and communicates with the receiving box, and the output end of the gearbox is connected to the kinetic energy conversion component.

[0007] Optionally, the kinetic energy conversion component includes a first fixed block and a second fixed block. The first fixed block is provided with a first threaded block, which is connected to the output end of the gearbox via a rotating roller. The second fixed block is provided with a second threaded block, which meshes with the first threaded block. The second threaded block is coaxially provided with a rotating shaft, which is connected to the countermeasure component.

[0008] Optionally, the second fixing block has a built-in thermoelectric heat dissipation component, and a heat dissipation pipe is connected inside the second fixing block. The heat dissipation pipe extends outside the receiving box, and the heat dissipation end of the thermoelectric heat dissipation component faces the outlet of the heat dissipation pipe.

[0009] Optionally, the thermoelectric heat dissipation assembly includes a hot end and a cold end. The hot end is attached to the inner wall of the second fixing block. The cold end and the hot end are connected by a guide to form an electrical circuit. The electrical circuit is connected to an electrical port. The electrical port is electrically connected to a heat dissipation fan. The heat dissipation fan is provided with a fixing bracket on its outer periphery for the rotation of the heat dissipation fan. The heat dissipation fan blows air towards the outlet of the heat dissipation pipe.

[0010] Optionally, a bearing is fitted around the outer periphery of the rotating shaft, and a first gear is provided at the end of the rotating shaft. The first gear extends into the connecting cylinder and connects with the countermeasure assembly.

[0011] Optionally, the countermeasure component includes a first helical rod and a second helical rod that mesh with each other. The top ends of the first helical rod and the second helical rod are rotatably connected to the inner wall of the connecting cylinder. The first helical rod and the second helical rod are respectively provided with a second gear and a third gear. The second gear and the third gear mesh with the first gear. The bottom ends of the first helical rod and the second helical rod extend out of the connecting cylinder.

[0012] Optionally, the vacuum generating chamber includes a first vacuum cylinder and a second vacuum cylinder, which are respectively located on both sides of the connecting cylinder and communicate with it. The first vacuum cylinder or the second vacuum cylinder is connected to the external vacuum system. When the external vacuum system is started, the first vacuum cylinder and the second vacuum cylinder generate negative pressure in the area of ​​the connecting cylinder that is in close contact with it. The first vacuum cylinder or the second vacuum cylinder is provided with a detachable sealing cover.

[0013] Optionally, the receiving box may be provided with a fixing frame, the fixing frame being fixed to the assembly line support block on the side away from the receiving box, and the fixing frame being used to fix the drive unit.

[0014] This application also provides a forced vacuum method, comprising the following steps: Step S1: Start the driver unit; Step S2: The drive unit drives the kinetic energy conversion assembly to perform motion conversion within the receiving box; Step S3: The converted kinetic energy is transferred to the countermeasure component inside the connecting cylinder, and drives the countermeasure component to rotate continuously; Step S4: The bottom end of the rotating countermeasure component generates a forced swirling flow in the tail cavity of the extruder, so as to force the gas in the cavity to flow towards the connecting cylinder; Step S5: The gas that is forcibly discharged is extracted by an external vacuum system through the vacuum generating chamber.

[0015] As can be seen from the above technical solutions, the embodiments of this application have the following advantages: This application provides a forced vacuum device and method. The drive unit is activated, and its power is transmitted through a kinetic energy conversion component in the receiving box to a counter-resistance component in the connecting cylinder, causing its bottom end to rotate continuously within the extruder tail cavity. Simultaneously, the vacuum generating chamber, under the action of an external vacuum system, establishes and maintains a stable negative pressure via the connecting cylinder to extract gas from the material. The continuously rotating counter-resistance component forms a mechanical barrier at the negative pressure extraction port, actively agitating and blocking the plasticized material carried by the airflow. This effectively prevents material from being sucked into the vacuum pipeline while efficiently creating a vacuum, thus solving the technical problem of existing vacuum devices easily drawing plasticized material into the pipeline under negative pressure, affecting normal operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a forced vacuum device provided in the embodiments of this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Enlarged view at point B in the middle; Figure 4 This is a flowchart of a forced vacuum method provided in the embodiments of this application.

[0018] The meanings of the reference numerals in the attached figures are as follows: 1. Receiving box; 2. Connecting cylinder; 3. Drive motor; 4. Gearbox; 5. First fixing block; 6. Second fixing block; 7. First threaded block; 8. Rotating roller; 9. Second threaded block; 10. Rotating shaft; 11. Heat dissipation pipe; 12. Hot end; 13. Cold end; 14. Cooling fan; 15. Bearing; 16. First gear; 17. First helical rod; 18. Second helical rod; 19. Second gear; 20. Third gear; 21. First vacuum cylinder; 22. Second vacuum cylinder; 23. Sealing cover. Detailed Implementation

[0019] 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. It should be noted that in the optional embodiments of the present invention, the object information and other related data involved require the permission or consent of the object when the embodiments of the present invention are applied to specific products or technologies, and the collection, use, and processing of related data must comply with the relevant laws, regulations, and standards of the relevant countries and regions. That is to say, if the embodiments of the present invention involve data related to the object, it needs to be obtained with the authorization and consent of the object, the authorization and consent of the relevant departments, and in compliance with the relevant laws, regulations, and standards of the country and region. If personal information is involved in the embodiments, the acquisition of all personal information requires the consent of the individual. If sensitive information is involved, the separate consent of the information subject is required, and the embodiments also need to be implemented with the authorization and consent of the object.

[0020] For easier understanding, please refer to Figures 1 to 3 An embodiment of a forced vacuum device provided in this application includes: a drive unit, an output end of which is connected to a receiving box 1, a connecting cylinder 2 at the bottom of the receiving box 1, a vacuum generating chamber passing through the connecting cylinder 2, the vacuum generating chamber being connected to an external vacuum system, the bottom of the connecting cylinder 2 being used to connect to the tail end of an extruder, a kinetic energy conversion component inside the receiving box 1 being connected to the drive unit, and a counteracting component inside the connecting cylinder 2 being connected to the other end of the kinetic energy rotating ring component, wherein the bottom end of the counteracting component extends into the tail end cavity of the extruder and rotates continuously after being started by the drive unit.

[0021] It should be noted that the bottom end of the connecting cylinder 2 can be connected to the side and top of the tail of the extruder and fixed with bolts. When the extruder is working, the entire device is started, runs stably, and receives water vapor and low molecular weight volatile substances.

[0022] When the external vacuum system is activated, it creates a negative pressure state in the vacuum generating chamber, causing the water vapor and low-molecular-weight volatile substances generated by the melting of plastic during extrusion to flow into the vacuum generating chamber. Then, through the buffering effect of the vacuum generating chamber, they gradually flow into the external processing tank for storage, to be disposed of in a harmless manner later.

[0023] This application provides a forced vacuum device where, upon activation of the drive unit, power is transmitted via a kinetic energy conversion component within the receiving box 1 to a counter-rotating component within the connecting cylinder 2, causing its bottom end to rotate continuously within the extruder's tail cavity. Simultaneously, under the action of an external vacuum system, a stable negative pressure is established and maintained in the vacuum generating chamber via the connecting cylinder 2 to extract gas from the material. The continuously rotating counter-rotating component forms a mechanical barrier at the negative pressure extraction port, actively agitating and blocking the plasticized material carried by the airflow. This effectively prevents material from being sucked into the vacuum pipeline while efficiently creating a vacuum, thus solving the technical problem of existing vacuum devices easily drawing plasticized material into the pipeline under negative pressure, affecting normal operation.

[0024] This application provides a forced vacuum device that uses a 75-type vacuum system to conduct forced vacuum experiments. Experiment 1

[0025] Summary of the Experiment on Enhancing Vacuum Degree of Equipment (Part 1)

[0026]

[0027]

[0028] Experiment 2

[0029] Summary of Experiments to Enhance Vacuum Degree of Equipment (Part 2)

[0030]

[0031]

[0032] As shown in Experiments 1 and 2 above, during the extruder's operation, as the temperature increases while the negative pressure remains constant, the material variation increases, but no material overflow occurs. Therefore, the forced vacuum device provided in this application embodiment effectively prevents material from being sucked into the vacuum pipeline while efficiently creating a vacuum, thus avoiding material being drawn into the pipeline.

[0033] In this embodiment, the drive unit includes a drive motor 3 and a gearbox 4. The output end of the drive motor 3 is connected to the gearbox 4. The bottom of the gearbox 4 is fixed to the receiving box 1 and communicates with the receiving box 1. The output end of the gearbox 4 is connected to the kinetic energy conversion component.

[0034] Specifically, the drive motor 3, acting as a power source, outputs initial speed and torque, which is then input to the gearbox 4 via a coupling or direct connection. The gearbox 4, according to process requirements, reduces the input power and increases the torque before transmitting it from its output end to the kinetic energy conversion component inside the receiving box 1. The bottom of the gearbox 4 is fixed to the receiving box 1, ensuring the stability of the transmission mechanism. The design of its housing connecting to the interior of the receiving box 1 facilitates the smooth flow of power output and the sealed integration of the overall structure, ultimately achieving a smooth and reliable delivery of the adapted, more powerful rotational power to the kinetic energy conversion component and the counter-rotation component.

[0035] In this embodiment of the application, the kinetic energy conversion component includes a first fixed block 5 and a second fixed block 6. The first fixed block 5 is provided with a first threaded block 7, which is connected to the output end of the gearbox 4 through a rotating roller 8. The second fixed block 6 is provided with a second threaded block 9, which meshes with the first threaded block 7. The second threaded block 9 is coaxially provided with a rotating shaft 10, which is connected to the countermeasure component.

[0036] Specifically, the output end of the gearbox 4 drives the rotating roller 8 to rotate, which in turn drives the first threaded block 7 connected thereto to rotate. The first threaded block 7 meshes with the second threaded block 9 on the second fixed block 6, thereby converting the rotational motion from the horizontal axis (first threaded block 7) to another axis (second threaded block 9) that is perpendicular to it or at a specific angle to it, thus realizing the conversion of the power transmission direction. The second threaded block 9 directly outputs the rotational power after the direction adjustment through the rotating shaft 10 that is coaxially fixed with it, and finally drives the countermeasure component connected thereto to rotate continuously in the tail cavity of the extruder, thus completing the transfer of kinetic energy and the conversion of the motion form.

[0037] In this embodiment of the application, the second fixing block 6 has a built-in thermoelectric heat dissipation component, and a heat dissipation pipe 11 is connected inside the second fixing block 6. The heat dissipation pipe 11 extends outside the receiving box 1, and the heat dissipation end 12 of the thermoelectric heat dissipation component faces the outlet of the heat dissipation pipe 11.

[0038] It should be noted that multiple ball bearings are provided between the inner wall of the first fixed block 5 and the rotating roller 8, but heat is generated during rotation. The heat from the first fixed block 5 can be transferred to the second fixed block 6.

[0039] Therefore, when the inner wall of the first fixed block 5 and the rotating roller 8 generate heat due to friction during high-speed transmission, the thermoelectric heat dissipation component built into the second fixed block 6 is activated. Utilizing the Peltier effect, it actively transfers the heat in the transmission area within the first fixed block 5 to the designated heat dissipation end 12 after being energized. At this time, the air inside the heat dissipation pipe 11 facing the heat dissipation end 12 is heated to form a directional airflow, continuously discharging the heat to the outside of the receiving box 1, thereby achieving efficient and directional active cooling of the transmission parts, ensuring that the inner wall of the first fixed block 5 and the rotating roller 8 operate stably at the working temperature, and avoiding wear or transmission failure due to overheating.

[0040] Preferably, the thermoelectric heat dissipation assembly includes a hot end 12 and a cold end 13. The hot end 12 is attached to the inner wall of the second fixing block 6. The cold end 13 and the hot end 12 are connected by a wire to form an electrical circuit. The electrical circuit is connected to an electrical port. The electrical port is electrically connected to a heat dissipation fan 14. The heat dissipation fan 14 is provided with a fixing bracket on its outer periphery for the heat dissipation fan 14 to rotate. The heat dissipation fan 14 blows air towards the outlet of the heat dissipation pipe 11.

[0041] For example, the thermoelectric heat dissipation component is driven by an electrical circuit. The hot end 12 is tightly attached to the inner wall of the second fixed block 6 to absorb the heat generated by the transmission, while the cold end 13 is kept at a low temperature under the Peltier effect. After the heat is directionally transferred from the hot end 12 to the cold end 13 through the guide connection, the high-temperature air gathered near the cold end 13 is blown to the outlet of the heat dissipation pipe 11 by the heat dissipation fan 14 which is synchronously powered by the power supply port. The heat dissipation fan 14 rotates stably through the outer peripheral fixing frame to ensure that the airflow is continuously and directionally discharged, thereby realizing the active and efficient transfer of the heat inside the second fixed block 6 to the outside of the receiving box 1 and maintaining the stable operating temperature of the transmission component.

[0042] In this embodiment, a bearing 15 is sleeved on the outer periphery of the rotating shaft 10, and a first gear 16 is provided at the end of the rotating shaft 10. The first gear 16 extends into the connecting cylinder 2 and is connected to the countermeasure component.

[0043] Specifically, the rotating shaft 10 achieves stable rotation with low resistance and high precision under the support of the bearing 15, and the rotational power of the automatic energy conversion component is reliably transmitted in the future; the first gear 16 at the end of the rotating shaft 10 rotates accordingly and extends into the connecting cylinder 2 with its tooth structure. By meshing with the corresponding transmission structure on the countermeasure component, the rotational power is finally converted into the continuous rotation of the countermeasure component in the tail cavity of the extruder, thereby completing the transmission of all power and direction from the box body to the bottom working position.

[0044] Preferably, the countermeasure component includes a first spiral rod 17 and a second spiral rod 18 that mesh with each other. The top ends of the first spiral rod 17 and the second spiral rod 18 are rotatably connected to the inner wall of the connecting cylinder 2. The first spiral rod 17 and the second spiral rod 18 are respectively provided with a second gear 19 and a third gear 20. The second gear 19 and the third gear 20 are both meshed with the first gear 16. The bottom ends of the first spiral rod 17 and the second spiral rod 18 extend out of the connecting cylinder 2.

[0045] Specifically, the rotation of the first gear 16 inside the connecting cylinder 2 simultaneously drives the second gear 19 and the third gear 20 meshing with it, thereby causing the first screw rod 17 and the second screw rod 18 to rotate synchronously and in opposite directions inside the connecting cylinder 2. During the meshing rotation of the two screw rods, the parts of their bottom ends that extend into the tail cavity of the extruder form a dynamic mechanical barrier and conveying interface: on the one hand, the rotating screw blades can cut and agitate the plasticized material that attempts to rise with the negative pressure airflow, effectively dispersing and blocking it from entering the connecting cylinder 2; on the other hand, the meshing motion of the screw rods generates a downward axial conveying force on the material, further pushing the material back into the extruder cavity, thereby achieving gas-solid separation at the air extraction port, ensuring that only gas can be smoothly extracted, while solid or semi-solid materials are reliably blocked outside the vacuum pipeline.

[0046] In this embodiment, the vacuum generating chamber includes a first vacuum cylinder 21 and a second vacuum cylinder 22. The first vacuum cylinder 21 and the second vacuum cylinder 22 are respectively disposed on both sides of the connecting cylinder 2 and communicate with it. The first vacuum cylinder 21 or the second vacuum cylinder 22 is connected to an external vacuum system. When the external vacuum system is started, the first vacuum cylinder 21 and the second vacuum cylinder 22 generate negative pressure in the area of ​​the connecting cylinder 2 that is in close contact with it. The first vacuum cylinder 21 or the second vacuum cylinder 22 is provided with a detachable sealing cover 23.

[0047] It should be noted that either the first vacuum cylinder 21 or the second vacuum cylinder 22 can be equipped with a detachable sealing cap 23, depending on the actual application. If the first vacuum cylinder 21 is equipped with a detachable sealing cap 23, then the second vacuum cylinder 22 is used to connect to the vacuum system; conversely, if the second vacuum cylinder 22 is not equipped with a detachable sealing cap 23, then the first vacuum cylinder 21 is used to connect to the vacuum system.

[0048] Specifically, the vacuum generating chamber is symmetrically arranged on both sides of the connecting cylinder 2 via a first vacuum cylinder 21 and a second vacuum cylinder 22, forming a dual-path negative pressure enhancement structure. When the external vacuum system is started, the negative pressure is synchronously transmitted to the corresponding areas on both sides of the connecting cylinder 2 through the first and second vacuum cylinders 22, forming a uniform and stable negative pressure environment within the connecting cylinder 2, which efficiently draws gas from the extruder. The coordinated work of the two vacuum cylinders improves the pumping efficiency and negative pressure stability, while the design of the detachable sealing cover 23 facilitates independent inspection, cleaning, or maintenance of a single vacuum cylinder without interrupting the operation of the entire vacuum system, achieving a balance between efficient pumping and convenient maintenance.

[0049] In this embodiment, the receiving box 1 may be provided with a fixing frame (not shown). The fixing frame is fixed on the assembly line support block on the side away from the receiving box 1. The fixing frame is used to fix the drive unit.

[0050] Specifically, the mounting frame serves as the load-bearing and connecting structure for the entire device. One end is securely mounted on the production line support block, forming a rigid connection with the production line's fixed foundation; the other end supports and fixes the drive unit and the connected receiving box 1. This design effectively transmits and disperses the vibrations generated by the drive motor 3 and gearbox 4 during operation, as well as the mechanical fluctuations that may exist during vacuum suction, to the robust production line foundation through a rigid structure. This ensures the overall stability and positional accuracy of the drive unit, receiving box 1, and even the internal transmission components during operation, providing fundamental support for the continuous, stable, and reliable operation of the device.

[0051] For easier understanding, please refer to Figure 4 An embodiment of a forced vacuum method provided in this application includes the following steps: Step S1: Start the driver unit; Step S2: The drive unit drives the kinetic energy conversion assembly to perform motion conversion within the receiving box 1; Step S3: The converted kinetic energy is transferred to the countermeasure component inside the connecting cylinder 2, and drives the countermeasure component to rotate continuously; Step S4: The bottom end of the rotating countermeasure component generates a forced swirling flow in the tail cavity of the extruder, so as to force the gas in the cavity to flow towards the connecting cylinder 2. Step S5: The gas that is forcibly discharged passes through the vacuum generating chamber and is then extracted by the external vacuum system.

[0052] The forced vacuum method provided in this application embodiment first starts the drive unit, and the drive motor 3 outputs a suitable speed and torque through the gearbox 4; the power drive kinetic energy conversion component converts the rotational motion in direction through threaded engagement and transmits it to the rotating shaft 10; the rotating shaft 10 drives two mutually meshing and counter-rotating screw rods in the connecting cylinder 2 to rotate continuously through gear engagement; the bottom end of the screw rod forms a forced vortex in the tail cavity of the extruder, which both cuts and blocks the plasticized material, and pushes the gas in the cavity to flow directionally towards the connecting cylinder 2; the gas guided out then enters the vacuum generating chamber connected to the connecting cylinder 2, and is finally stably extracted by the external vacuum system, thereby achieving the dual purpose of evacuation and preventing material from clogging the pipeline.

[0053] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0054] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0055] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. 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. Such 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 forced vacuum device, characterized in that, include: The drive unit has an output end connected to a receiving box. The bottom of the receiving box is provided with a connecting cylinder, through which a vacuum generating chamber is passed. The vacuum generating chamber is connected to an external vacuum system. The bottom of the connecting cylinder is used to connect to the tail end of the extruder. The receiving box is provided with a kinetic energy conversion component connected to the drive unit. The connecting cylinder is provided with a counteracting component connected to the other end of the kinetic energy rotating ring component. The bottom end of the counteracting component extends into the tail end cavity of the extruder and rotates continuously after being started by the drive unit.

2. The forced vacuum device according to claim 1, characterized in that, The drive unit includes a drive motor and a gearbox. The output end of the drive motor is connected to the gearbox. The bottom of the gearbox is fixed to the receiving box and communicates with the receiving box. The output end of the gearbox is connected to the kinetic energy conversion component.

3. A forced vacuum device according to claim 2, characterized in that, The kinetic energy conversion component includes a first fixed block and a second fixed block. The first fixed block is provided with a first threaded block, which is connected to the output end of the gearbox via a rotating roller. The second fixed block is provided with a second threaded block, which meshes with the first threaded block. The second threaded block is coaxially provided with a rotating shaft, which is connected to the countermeasure component.

4. A forced vacuum device according to claim 3, characterized in that, The second fixing block has a built-in thermoelectric heat dissipation component, and a heat dissipation pipe is connected inside the second fixing block. The heat dissipation pipe extends outside the receiving box, and the heat dissipation end of the thermoelectric heat dissipation component faces the outlet of the heat dissipation pipe.

5. A forced vacuum device according to claim 4, characterized in that, The thermoelectric heat dissipation assembly includes a hot end and a cold end. The hot end is attached to the inner wall of the second fixed block. The cold end and the hot end are connected by a guide to form an electrical circuit. The electrical circuit is connected to an electrical port. The electrical port is electrically connected to a heat dissipation fan. The heat dissipation fan is provided with a fixed frame on its outer periphery for the rotation of the heat dissipation fan. The heat dissipation fan blows air towards the outlet of the heat dissipation pipe.

6. A forced vacuum device according to claim 3, characterized in that, The outer circumference of the rotating shaft is fitted with a bearing, and the end of the rotating shaft is provided with a first gear, which extends into the connecting cylinder and connects to the countermeasure component.

7. A forced vacuum device according to claim 6, characterized in that, The countermeasure component includes a first spiral rod and a second spiral rod that mesh with each other. The top ends of the first spiral rod and the second spiral rod are rotatably connected to the inner wall of the connecting cylinder. The first spiral rod and the second spiral rod are respectively provided with a second gear and a third gear. The second gear and the third gear mesh with the first gear. The bottom ends of the first spiral rod and the second spiral rod extend out of the connecting cylinder.

8. A forced vacuum device according to claim 1, characterized in that, The vacuum generating chamber includes a first vacuum cylinder and a second vacuum cylinder, which are respectively located on both sides of the connecting cylinder and communicate with it. The first vacuum cylinder or the second vacuum cylinder is connected to the external vacuum system. When the external vacuum system is started, the first vacuum cylinder and the second vacuum cylinder generate negative pressure in the corresponding area of ​​the connecting cylinder. The first vacuum cylinder or the second vacuum cylinder is provided with a detachable sealing cover.

9. A forced vacuum device according to any one of claims 1-8, characterized in that, The receiving box may be equipped with a fixing frame, which is fixed to the assembly line support block on the side away from the receiving box, and the fixing frame is used to fix the drive unit.

10. A method for use in the forced vacuum apparatus according to any one of claims 1-9, characterized in that, Includes the following steps: Step S1: Start the driver unit; Step S2: The drive unit drives the kinetic energy conversion component to perform motion conversion within the receiving box; Step S3: The converted kinetic energy is transferred to the countermeasure component inside the connecting cylinder, and drives the countermeasure component to rotate continuously; Step S4: The bottom end of the rotating countermeasure component generates a forced swirling flow in the tail cavity of the extruder, so as to force the gas in the cavity to flow towards the connecting cylinder. Step S5: The gas that is forcibly discharged passes through the vacuum generating chamber and is then extracted by the external vacuum system.

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