A vacuum pump sliding vane made by a plastic insert process

Abstract

The utility model discloses a kind of vacuum pump sliding vane made of embedded plastic technology, comprising: sliding vane framework main body, friction component and weight reduction component, friction component includes the isolation part of setting in the outer side of sliding vane framework main body, the connecting portion for strengthening the isolation part and the connecting portion of sliding vane framework main body are provided at the connecting place of isolation part and sliding vane framework main body;Weight reduction component is used for the weight reduction of sliding vane framework main body, and weight reduction component is symmetrically set in the side of sliding vane framework main body.The utility model is provided with friction component outside the outer side of sliding vane framework main body, isolation part in friction component is fixed by connecting portion, and weight reduction component is set in the side of sliding vane framework main body, and weight reduction component is designed to reduce the quality of sliding vane, so as to reduce the moment of inertia of sliding vane, and then reduce the possibility of the vibration condition of vacuum pump caused by unbalanced inertia force when sliding vane rotates.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump vanes, and in particular to a vacuum pump vane manufactured by an embedded molding process. Background Technology

[0002] Among the core moving parts of a vacuum pump, the vane is a key component for achieving gas compression. Its dynamic performance directly affects the operational stability and reliability of the equipment. Traditional vacuum pump vanes are mostly manufactured using a simple injection molding process.

[0003] However, in order to ensure structural strength, traditional vanes are usually designed as solid or thick-walled. According to the principle of mechanics, the moment of inertia is proportional to the mass. When the vane rotates at high speed, the unbalanced inertial force generated will be directly transmitted to the pump body, causing the overall equipment to vibrate. Long-term vibration not only accelerates the wear of vulnerable parts such as bearings and seals, but also reduces the stability of the pump cavity vacuum, and may even cause fasteners to loosen or pipes to break. Therefore, how to achieve a lightweight design for vacuum pump vanes and reduce their rotational inertia has become a pressing technical problem that needs to be solved. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum pump vane manufactured using an embedded molding process, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum pump vane manufactured using an embedded molding process, comprising: The vane frame body is used for the rotational pumping of fluid in a vacuum pump; A friction assembly is used to isolate the vane frame body from the pump housing inner wall. The friction assembly includes an isolation part disposed on the outside of the vane frame body, and a connection part for reinforcing the connection between the isolation part and the vane frame body is provided at the connection point between the isolation part and the vane frame body. A weight reduction component is used to reduce the weight of the slider frame body, and the weight reduction component is symmetrically arranged on the side of the slider frame body.

[0006] Preferably, the isolation part includes a friction shell, which is sleeved on the outside of the slider skeleton body, and the connecting part is disposed on the inside of the friction shell.

[0007] Preferably, the friction housing has friction arc surfaces at both ends, which are used to make frictional contact with the inner wall of the pump housing.

[0008] Preferably, the connecting portion includes: The reinforcing protrusions are symmetrically arranged on the sides of the slider frame body, and the sides of the reinforcing protrusions are flush with the inner wall of the friction shell. Friction protrusions, a plurality of said friction protrusions are disposed on the surface of the reinforcing protrusion, said friction protrusions are used to increase the contact surface between the reinforcing protrusion and the friction protrusion.

[0009] Preferably, the weight reduction component includes: First weight reduction holes, multiple first weight reduction holes are symmetrically opened on the side of the slider skeleton body; The second weight reduction holes are symmetrically opened on the side of the slider frame body and located on the opposite side of the first weight reduction holes.

[0010] Preferably, the first weight-reducing hole is a circular hole, and the circular hole of the first weight-reducing hole is used to disperse stress.

[0011] Preferably, the second weight-reducing hole is configured as a straight slot hole.

[0012] The technical effects and advantages of this utility model are as follows: This invention features a friction assembly on the outer side of the slide frame body. The isolation part in the friction assembly is reinforced and fixed by the connecting part. The weight reduction assembly on the side of the slide frame body reduces the weight of the slide frame body. Compared with a slide without a weight reduction design, this weight reduction assembly design reduces the moment of inertia of the slide by reducing its mass, thereby reducing the possibility of vacuum pump vibration caused by unbalanced inertial forces when the slide rotates. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention and the vacuum pump.

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 3 This is a top sectional view of the entire utility model.

[0016] Figure 4 This is a schematic diagram of the main structure of the slider skeleton of this utility model.

[0017] In the figure: 1. Main body of the slider frame; 101. First weight reduction hole; 102. Second weight reduction hole; 2. Friction shell; 201. Friction arc surface; 3. Reinforcing protrusion; 301. Friction protrusion. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: This utility model provides the following... Figure 1 - Figure 4 The vacuum pump vane shown is manufactured using an embedded molding process and includes: a vane skeleton body 1, a friction assembly, and a weight reduction assembly; It should be noted that the vane frame body 1 is used for the rotational pumping of fluid in the vacuum pump, the friction assembly is used to isolate the vane frame body 1 from the inner wall of the pump casing, and the weight reduction assembly is used to reduce the weight of the vane frame body 1. The weight reduction assembly is symmetrically arranged on the side of the vane frame body 1. Specifically, the material of the slider skeleton body 1 is polyphenylene sulfide, and the friction component includes an isolation part disposed on the outside of the slider skeleton body 1. The connection between the isolation part and the slider skeleton body 1 is provided with a connection part for strengthening the connection between the isolation part and the slider skeleton body 1. It should be noted that the isolation part includes a friction shell 2, which is sleeved on the outside of the slide frame body 1, and the connecting part is located on the inside of the friction shell 2. Specifically, the friction shell 2 is made of polyetheretherketone plastic, which is an aromatic crystalline thermoplastic polymer material with high mechanical strength, high temperature resistance, impact resistance, flame retardancy, acid and alkali resistance, hydrolysis resistance, wear resistance, fatigue resistance, radiation resistance and good electrical properties. The friction shell 2 is fixed to the sliding plate skeleton body 1 by an embedded molding process.

[0020] It should be noted that friction arc surfaces 201 are provided at both ends of the friction housing 2, and the friction arc surfaces 201 are used for frictional contact with the inner wall of the pump housing; Furthermore, the connecting part includes: a reinforcing protrusion 3 and a friction protrusion 301; It should be noted that the reinforcing protrusions 3 are symmetrically arranged on the side of the slider frame body 1, and the side of the reinforcing protrusions 3 is connected to the inner wall of the friction shell 2. Multiple friction protrusions 301 are all arranged on the surface of the reinforcing protrusions 3. Specifically, the reinforcing protrusion 3 and the sliding frame body 1 are fixed by integral injection molding. The friction protrusion 301 is used to increase the contact surface between the reinforcing protrusion 3 and the friction protrusion 301. The friction protrusion 301 and the reinforcing protrusion 3 are fixed by integral injection molding.

[0021] Example 2: A weight reduction component applied to a vacuum pump vane manufactured using the embedding process described in Example 1.

[0022] Specifically, the weight reduction component includes: a first weight reduction hole 101 and a second weight reduction hole 102; It should be noted that multiple first weight reduction holes 101 are symmetrically opened on the side of the slider frame body 1, and multiple second weight reduction holes 102 are symmetrically opened on the side of the slider frame body 1 and located on the opposite side of the first weight reduction holes 101. Specifically, the first weight-reducing hole 101 is a through hole, and the second weight-reducing hole 102 is a closed-end slot. The first weight-reducing hole 101 is a circular hole, which is used to disperse stress. The second weight-reducing hole 102 is a straight slot hole.

[0023] In practical use, a friction assembly is provided on the outside of the slide frame body 1. The isolation part in the friction assembly is reinforced and fixed by the connecting part. The weight reduction assembly provided on the side of the slide frame body 1 reduces the weight of the slide frame body 1. Compared with the slide without weight reduction design, this weight reduction assembly design reduces the moment of inertia of the slide by reducing the mass of the slide, thereby reducing the possibility of vacuum pump vibration caused by unbalanced inertial force when the slide rotates.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vacuum pump vane manufactured using an embedded molding process, characterized in that, include: The vane frame body (1) is used for the rotational pumping of fluid in the vacuum pump; Friction assembly, the friction assembly is used to isolate the vane skeleton body (1) from the inner wall of the pump housing, the friction assembly includes an isolation part disposed on the outside of the vane skeleton body (1), and the connection between the isolation part and the vane skeleton body (1) is provided with a connection part for strengthening the connection between the isolation part and the vane skeleton body (1); Weight reduction component, the weight reduction component is used to reduce the weight of the slider skeleton body (1), the weight reduction component is symmetrically arranged on the side of the slider skeleton body (1).

2. The vacuum pump vane manufactured using the embedding process according to claim 1, characterized in that, The isolation part includes a friction shell (2), which is sleeved on the outside of the slide frame body (1), and the connecting part is disposed on the inside of the friction shell (2).

3. The vacuum pump vane manufactured using the embedding process according to claim 2, characterized in that, The friction housing (2) has friction arc surfaces (201) at both ends, which are used for frictional contact with the inner wall of the pump housing.

4. The vacuum pump vane manufactured using an embedding process according to claim 2, characterized in that, The connecting part includes: Reinforcing protrusions (3) are symmetrically arranged on the side of the slide frame body (1), and the side of the reinforcing protrusions (3) is flush with the inner wall of the friction shell (2). Friction protrusions (301), a plurality of friction protrusions (301) are disposed on the surface of reinforcing protrusions (3), the friction protrusions (301) are used to increase the contact surface between reinforcing protrusions (3) and friction protrusions (301).

5. The vacuum pump vane manufactured using an embedding process according to claim 1, characterized in that, The weight reduction component includes: First weight reduction hole (101), multiple first weight reduction holes (101) are symmetrically opened on the side of the slider skeleton body (1); Second weight reduction holes (102) are symmetrically opened on the side of the slide frame body (1) and located on the opposite side of the first weight reduction holes (101).

6. The vacuum pump vane manufactured using an embedding process according to claim 5, characterized in that, The first weight-reducing hole (101) is configured as a circular hole, and the circular hole of the first weight-reducing hole (101) is used to disperse stress.

7. The vacuum pump vane manufactured using an embedding process according to claim 5, characterized in that, The second weight reduction hole (102) is configured as a straight groove hole.

Images