Sealing connection assembly for double-screw extruder

Abstract

The utility model provides a sealing connection assembly for a twin-screw extruder, which relates to the technical field of extruders, and comprises a mounting assembly and a sealing assembly, the outer side of the sealing assembly is fixedly connected to the inner wall of the mounting assembly, the mounting assembly comprises a machine barrel, the inner wall of the machine barrel is slidably connected with a mounting block, and the inner wall of the machine barrel is fixedly connected with a fixed partition plate. A threaded rod is fixedly connected to the side, close to the mounting block, of the fixing partition plate, a rotating ring is rotationally connected into the mounting block, and penetrating holes are formed in the two sides of the interior of the mounting block and the fixing partition plate, so that the stability of the sealing assembly in the high-temperature and high-pressure environment is improved, position deviation and structural deformation are prevented, and the mounting and maintaining process is simplified; the problem that a traditional sealing piece is prone to displacement and deformation in the high-temperature and high-pressure environment is effectively solved, meanwhile, the abrasion resistance and stability of the sealing assembly are enhanced, and the risk of material leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to a sealing connection assembly for a twin-screw extruder. Background Art

[0002] A twin-screw extruder is a device used for plastic processing and plastic forming. It uses two mutually rotating screws to gradually push raw materials from the feed inlet to the extrusion outlet, while heating, melting, and mixing throughout the process. This extruder is usually used to produce various plastic products such as plastic pipes, sheets, films, profiles, etc.

[0003] The existing patent CN217319233U discloses a twin-screw extruder, which includes a driving device, a mixing device, a sealing device, and a temperature control device. The mixing device includes two screws connected to the driving device and arranged in parallel, and a barrel sleeved outside the two screws. Each screw is formed with a flow channel along the length direction of the screw. Both ends of the flow channel are located at one end of the screw close to the driving device. The sealing device seals and connects one end of the screw close to the driving device. The temperature control device is used to deliver heat-conducting oil to the sealing device to supply heat-conducting oil to the flow channel and receive the heat-conducting oil flowing back from the flow channel;

[0004] The twin-screw extruder provided in this application forms a flow channel in two screws, places both ends of the flow channel at one end of the screw close to the driving device, seals and connects one end of the screw close to the driving device with a sealing device, and passes heat-conducting oil into the sealing device by the temperature control device, thereby reducing the temperature of the screw, and the cooling effect is simple and efficient.

[0005] However, in actual use, there are still the following deficiencies. For example: in a high-temperature and high-pressure working environment, traditional sealing components are often difficult to maintain a stable closed state, and are prone to position deviation or structural deformation. This directly affects their sealing performance. Especially after long-term continuous operation, due to the thermal expansion and contraction effect and the frictional action of the high-speed passing of materials, the sealing parts are prone to wear and aging. These problems not only reduce the working efficiency of the equipment, but also increase the risk of material leakage during the production process.

[0006] Therefore, the utility model provides a sealing connection assembly for a twin-screw extruder. Summary of the Utility Model

[0007] The purpose of the utility model is to solve the deficiencies existing in the prior art and provide a sealing connection assembly for a twin-screw extruder.

[0008] To achieve the above object, the present utility model adopts the following technical solutions: A sealing connection component for a twin-screw extruder, including an installation component and a sealing component, the outer side of the sealing component is fixedly connected to the inner wall of the installation component;

[0009] The installation component includes a barrel, the inner wall of the barrel is slidably connected with an installation block, and a fixed partition is fixedly connected to the inner wall of the barrel;

[0010] The sealing component includes a corrugated sealing ring, one end of the corrugated sealing ring is fixedly connected to the installation block, an inflatable airbag is arranged inside the fixed partition close to one side of the corrugated sealing ring, a conical spring is fixedly connected to one side of the fixed partition, and sealing ring bodies are fixedly connected to the adjacent ends of the fixed partition and the installation block.

[0011] As a preferred embodiment, a threaded rod is fixedly connected to the side of the fixed partition close to the installation block, a rotating ring is rotatably connected to the inside of the installation block, and through holes are opened on both sides inside the installation block and the fixed partition.

[0012] The technical effect of adopting the above technical solution is: It increases the sealing performance of the device and can quickly install the sealing component.

[0013] As a preferred embodiment, a bottom bracket is fixedly connected to the bottom end of the barrel, a driving member is installed on one side of the top end of the bottom bracket, and the driving of the driving member penetrates through the through hole and extends into the barrel.

[0014] The technical effect of adopting the above technical solution is: It enables the driving end of the driving member to maintain sealing performance during operation.

[0015] As a preferred embodiment, the inside of the rotating ring is threadedly connected to the threaded rod.

[0016] The technical effect of adopting the above technical solution is: It enables the installation block to be quickly installed by the rotation of the rotating ring.

[0017] As a preferred embodiment, the end of the corrugated sealing ring away from the installation block is fixedly connected to the fixed partition, and the end of the conical spring away from the fixed partition is fixedly connected to the threaded rod.

[0018] The technical effect of adopting the above technical solution is: It increases the overall sealing performance and reduces the risk of material leakage.

[0019] As a preferred embodiment, the outer side of the corrugated sealing ring is slidably connected to the inner wall of the barrel.

[0020] The technical effect of adopting the above technical solution is: to ensure that the connection points of the corrugated sealing ring can be closely attached to the barrel when being compressed.

[0021] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0022] By setting the installation component and the sealing component structure, through the threaded connection between the threaded rod and the rotating ring, the installation block can move up and down along the threaded rod, thereby driving the installation and adjustment of the sealing component. The fixed partition divides the interior of the barrel into two chambers, and the internal inflatable airbag expands during preheating to enhance the sealing effect. The conical spring adjusts the pressure between the installation block and the fixed partition to ensure that the corrugated sealing ring always maintains the best sealing state under the action of thermal expansion and contraction. This design improves the stability of the sealing component in high-temperature and high-pressure environments, prevents position deviation and structural deformation, simplifies the installation and maintenance process, effectively solves the problem that traditional seals are prone to displacement and deformation in high-temperature and high-pressure environments, and at the same time enhances the wear resistance and stability of the sealing component, reducing the risk of material leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional view of the sealing connection component for a twin-screw extruder provided by the present utility model;

[0024] Figure 2 It is a sectional view of the barrel of the sealing connection component for a twin-screw extruder provided by the present utility model;

[0025] Figure 3 It is an exploded view of the installation component of the sealing connection component for a twin-screw extruder provided by the present utility model;

[0026] Figure 4 It is a schematic structural diagram of the sealing component of the sealing connection component for a twin-screw extruder provided by the present utility model.

[0027] Legend:

[0028] 1. Installation component; 11. Barrel; 12. Installation block; 13. Fixed partition; 14. Threaded rod; 15. Rotating ring; 16. Perforation;

[0029] 2. Sealing component; 21. Corrugated sealing ring; 22. Inflatable airbag; 23. Conical spring; 24. Sealing ring body;

[0030] 3. Driving part; 4. Bottom bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] As Figure 1 - Figure 4 shown, this embodiment provides a technical solution: a sealing connection component for a twin-screw extruder, including an installation component 1 and a sealing component 2. The outer side of the sealing component 2 is fixedly connected to the inner wall of the installation component 1.

[0033] In this solution, the sealing component 2 includes a corrugated sealing ring 21. The outer side of the corrugated sealing ring 21 is slidably connected to the inner wall of the barrel 11. One end of the corrugated sealing ring 21 away from the mounting block 12 is fixedly connected to the fixed partition 13. One end of the corrugated sealing ring 21 is fixedly connected to the mounting block 12. An inflatable airbag 22 is arranged inside the fixed partition 13 on the side close to the corrugated sealing ring 21. One side of the fixed partition 13 is fixedly connected to a conical spring 23. The end of the conical spring 23 away from the fixed partition 13 is fixedly connected to the threaded rod 14. Sealing ring bodies 24 are fixedly connected to the adjacent ends of the fixed partition 13 and the mounting block 12. The sealing component 2 is mainly composed of the corrugated sealing ring 21. The corrugated sealing ring 21 is tightly arranged on the inner wall of the barrel 11 by means of an outer sliding connection to ensure that no leakage occurs. One end of the corrugated sealing ring 21 is fixedly connected. When the mounting block 12 is installed inward, it contacts the corrugated sealing ring 21 to form a stable connection method, making the sealing performance of the entire corrugated sealing ring 21 more stable and the operation more reliable. And inside the fixed partition 13, an inflatable airbag 22 is designed. Its main function is to make the sealing ring expand under the action of thermal expansion and contraction when the barrel 11 is preheated to increase the sealing performance. In addition, the conical spring 23 assembled on the outer side of the threaded rod 14 can help adjust the pressure between the mounting block 12 and the fixed partition 13. Especially under the action of the inflatable airbag 22, the corrugated sealing ring 21 can be finely adjusted under the action of thermal expansion and contraction to maintain its best sealing state. The sealing ring body 24 is to provide a better sealing effect for the driving end of the driving member 3 during the operation of the sealing component 2.

[0034] To achieve the effect of quickly installing the sealing component 2, as Figure 1 - Figure 4As shown in the figure: The installation component 1 includes a barrel 11. A mounting block 12 is slidably connected to the inner wall of the barrel 11. A fixed partition 13 is fixedly connected to the inner wall of the barrel 11. A threaded rod 14 is fixedly connected to the side of the fixed partition 13 close to the mounting block 12. A rotating ring 15 is rotatably connected to the inside of the mounting block 12. The inside of the rotating ring 15 is threadedly connected to the threaded rod 14. Through holes 16 are formed on both sides of the inside of the mounting block 12 and the fixed partition 13. The outer part of the sealing component 2 is tightly combined with the inner wall of the installation component 1 by a fixed connection method to ensure the stability and tightness of the connection. The main component of the installation component 1 is the barrel 11. The mounting block 12 is slidably connected to the inner wall of the barrel 11. Such a design enables the mounting block 12 to slide freely on the inner wall of the barrel 11, increasing the flexibility of the mounting block 12. At the same time, a fixed partition 13 is also fixedly connected to the inner wall of the barrel 11. The function of the fixed partition 13 is to separate the contact between the materials in the barrel 11 and the connection points, forming two chambers. The design of the threaded rod 14 is to increase the friction between the inner wall of the barrel 11 and the mounting block 12, thereby improving the stability of the mounting block 12. And through the threaded connection between the rotating ring 15 and the threaded rod 14, such a design enables the rotating ring 15 to move up and down along the threaded rod 14, achieving the effect of quickly installing the sealing component 2. In addition, through holes 16 are formed on both sides of the inside of the mounting block 12 and the fixed partition 13. The design of these through holes 16 is to allow the driving member 3 to pass through a rotating axis point.

[0035] Furthermore, as Figure 2 - Figure 3 shown in the figure: A bottom bracket 4 is fixedly connected to the bottom end of the barrel 11. A driving member 3 is installed on one side of the top end of the bottom bracket 4. The driving of the driving member 3 penetrates through the through hole 16 and extends into the barrel 11. The bottom bracket 4 provides a stable supporting effect. Subsequently, the driving member 3 penetrates through the through hole 16 through the driving end and extends into the internal space of the barrel 11 to be connected to the twin screw, thereby realizing the operation of the entire component.

[0036] Working principle:

[0037] As Figure 1 - Figure 4 shown in the figure:

[0038] In use: First, the mounting block 12 is threadedly connected to the rotating ring 15 through the threaded rod 14. By rotating the rotating ring 15, the mounting block 12 moves up and down along the threaded rod 14, driving the rapid installation of the sealing assembly 2. At the same time, the fixed partition 13 separates the materials in the barrel 11 from the connection point, forming two chambers. The inflatable airbag 22 provided inside the fixed partition 13 expands when the barrel 11 is preheated, further enhancing the sealing performance of the sealing assembly 2. The conical spring 23 outside the threaded rod 14 ensures that the corrugated sealing ring 21 maintains the best sealing state under the action of thermal expansion and contraction by adjusting the pressure between the mounting block 12 and the fixed partition 13. That is, when the mounting block 12 moves inward, one end of the mounting block 12 contacts the corrugated sealing ring 21, forming a stable connection to ensure that the corrugated sealing ring 21 closely adheres to the inner wall of the barrel 11 to prevent leakage. One end of the corrugated sealing ring 21 is fixed to the fixed partition 13, and the other end is fixed to the mounting block 12, enhancing the stability of the sealing assembly 2. Thus, the bottom bracket 4 is fixed to the bottom end of the barrel 11 to provide stable support for the driving member 3. The driving end of the driving member 3 penetrates through the through-hole 16 and enters the barrel 11 to be connected to the twin-screw. Through the connection of the through-hole 16, the driving member 3 enables the entire assembly of the twin-screw extruder to operate, ensuring the smooth progress of the material extrusion and processing process.

[0039] The above is only the preferred embodiment of the present invention, and it is not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. Sealing connection assembly for twin-screw extruder, characterized in that, It includes an installation component (1) and a sealing component (2), and the outer side of the sealing component (2) is fixedly connected to the inner wall of the installation component (1); The installation component (1) includes a barrel (11), an installation block (12) is slidably connected to the inner wall of the barrel (11), and a fixed partition (13) is fixedly connected to the inner wall of the barrel (11); The sealing component (2) includes a corrugated sealing ring (21), one end of the corrugated sealing ring (21) is fixedly connected to the installation block (12), an inflatable airbag (22) is arranged inside the fixed partition (13) on the side close to the corrugated sealing ring (21), a conical spring (23) is fixedly connected to one side of the fixed partition (13), and sealing ring bodies (24) are fixedly connected to the adjacent ends of the fixed partition (13) and the installation block (12).

2. The sealing connection assembly for a twin-screw extruder according to claim 1, characterized in that: A threaded rod (14) is fixedly connected to the side of the fixed partition (13) close to the installation block (12), a rotating ring (15) is rotatably connected to the inside of the installation block (12), and through holes (16) are opened on both sides inside the installation block (12) and the fixed partition (13).

3. The sealed connection assembly for a twin-screw extruder according to claim 2, characterized in that: A bottom bracket (4) is fixedly connected to the bottom end of the barrel (11), a driving member (3) is installed on one side of the top end of the bottom bracket (4), and the drive of the driving member (3) penetrates through the through hole (16) and extends into the barrel (11).

4. The sealing connection assembly for a twin-screw extruder according to claim 2, characterized in that: The inside of the rotating ring (15) is threadedly connected to the threaded rod (14).

5. The sealed connection assembly for a twin-screw extruder according to claim 2, characterized in that: One end of the corrugated sealing ring (21) far from the installation block (12) is fixedly connected to the fixed partition (13), and one end of the conical spring (23) far from the fixed partition (13) is fixedly connected to the threaded rod (14).

6. The sealed connection assembly for a twin-screw extruder according to claim 1, characterized in that: The outer side of the corrugated sealing ring (21) is slidably connected to the inner wall of the barrel (11).

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