High wear resistant seal ring for vacuum pumps

Abstract

The utility model discloses a kind of high wear-resistant sealing rings for vacuum pump, including sealing seat, the sealing seat inside fixed mounting has connecting sleeve, sealing cylinder is fixedly inserted in sealing seat one side, sealing ring body is fixedly installed in sealing cylinder inner wall, sealing gasket is arranged in the sealing ring body inside, sealing ring is attached to the outside of sealing gasket and is set, sealing ring and the connecting sleeve of sealing seat inside are inserted and are in alignment, rubber sealing pad is fixedly attached and is set in sealing seat inner wall, the inner wall of sealing cylinder is fixedly set with convex ring on the outside of sealing ring body, the convex ring and rubber sealing pad are extruded each other, locking structure is set on the outer wall of sealing seat and sealing cylinder, sealing groove is set in the sealing ring body inside, sealing gasket and sealing ring are all fixedly set in sealing groove inside, can realize the good sealing effect when sealing ring and sealing seat connect, improve its installation reliability simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump sealing technology, and in particular to a high wear-resistant sealing ring for vacuum pumps. Background Technology

[0002] Vacuum pumps are widely used in many fields such as industry, pharmaceuticals, and chemicals. They have extremely high requirements for sealing when they are working. During the operation of a vacuum pump, the sealing ring at the connection between the rotor and the drive shaft plays a crucial sealing role to prevent gas or liquid leakage and ensure the efficient and stable operation of the vacuum pump. Because this part is in a high-speed rotation and may be in the presence of complex media, the sealing ring is easily worn and is a consumable part that needs to be replaced regularly.

[0003] Currently, there are many problems with commonly available vacuum pump sealing rings. Traditional sealing rings have relatively poor sealing performance when installed with the sealing seat, and only a single sealing ring is used for sealing. Over time, wear between the vacuum pump and the sealing ring can easily cause liquid leakage. During equipment operation, under the action of external forces such as vibration and impact, loosening and separation can easily occur, reducing the reliability of sealing performance. To address the above problems, a high wear-resistant sealing ring for vacuum pumps has been proposed for improvement and upgrading. Utility Model Content

[0004] The purpose of this invention is to provide a high wear-resistant sealing ring for vacuum pumps to solve the problems mentioned in the background art.

[0005] To solve the above problems, the following technical solution is provided: a high wear-resistant sealing ring for a vacuum pump, comprising a sealing seat, a connecting sleeve fixedly installed inside the sealing seat, a sealing cylinder fixedly inserted into one side of the sealing seat, a sealing ring body fixedly installed on the inner wall of the sealing cylinder, a sealing gasket disposed inside the sealing ring body, a sealing ring fitted to the outer side of the sealing gasket, the sealing ring being inserted and aligned with the connecting sleeve inside the sealing seat, a rubber sealing gasket fixedly fitted to the inner wall of the sealing seat, a protruding ring fixedly disposed on the inner wall of the sealing cylinder outside the sealing ring body, the protruding ring and the rubber sealing gasket being pressed against each other, and a locking structure provided on the outer walls of the sealing seat and the sealing cylinder.

[0006] As a preferred embodiment of the above technical solution, a sealing groove is provided inside the sealing ring body, and the sealing gasket and sealing ring are both fixedly installed inside the sealing groove, with one end of the connecting sleeve being adapted to the size of the sealing groove.

[0007] As a preferred embodiment of the above technical solution, the sealing cylinder and the sealing seat are inserted and aligned with each other, the sealing seat has three mounting holes inside, and the sealing cylinder has three mounting screws threaded inside.

[0008] As a preferred embodiment of the above technical solution, each of the mounting screws is fixedly fitted with a mounting cap, and one end of the mounting screw is connected to the inside of the mounting hole. The sealing ring body is made of carbon-added silicon carbide ceramic material.

[0009] As a preferred embodiment of the above technical solution, the locking structure includes a first sealing ring and a second sealing ring. A limit rod is fixedly installed at one end of the first sealing ring, and the limit rod is rotatably installed inside the second sealing ring. An installation block is fixedly installed at one end of both the first sealing ring and the second sealing ring.

[0010] As a preferred embodiment of the above technical solution, one of the mounting blocks has a mounting gasket on its outer wall and a bolt on its outer side. One end of the bolt is inserted into the mounting gasket and the interior of the two mounting blocks, and the extended end is threaded with a hexagonal nut.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model device is equipped with a sealing ring, a sealing cylinder, and a sealing seat. The sealing cylinder's convex ring is pressed and aligned with the rubber sealing gasket on the sealing seat for initial installation and sealing. At the same time, the sealing gasket and sealing ring inside the sealing ring are aligned and inserted with the internal connecting sleeve of the sealing seat, causing the sealing gasket and sealing ring to deform and fill the connection gap. During equipment operation, even under the action of external forces such as vibration and impact, the sealing ring body and the sealing seat can maintain a tight connection without loosening or separation, ensuring the reliability of the sealing performance and avoiding the problems of poor sealing performance and leakage caused by the connection between the sealing ring and the sealing seat in existing single sealing structures.

[0013] 2. The device of this utility model is equipped with a locking structure. The sealing cylinder and sealing seat are initially fixed by the installation cap and installation screw. The sealing cylinder and sealing seat are double fixed by setting the first sealing ring and the second sealing ring and using bolts and hexagonal nuts for limiting and fixing, thereby improving the installation stability of the sealing ring and the tightening effect.

[0014] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of a high wear-resistant sealing ring for a vacuum pump according to the present invention;

[0017] Figure 2 This is a schematic diagram of the side structure of a high wear-resistant sealing ring for a vacuum pump according to the present invention;

[0018] Figure 3 for Figure 2 Schematic diagram of the split structure;

[0019] Figure 4 for Figure 3 A partial enlarged diagram of the split structure;

[0020] Figure 5 for Figure 4 A magnified diagram of the partially disassembled structure.

[0021] In the diagram: 1. Sealing seat; 2. Locking structure; 21. First sealing ring; 22. Second sealing ring; 23. Limiting rod; 24. Mounting block; 25. Bolt; 26. Hex nut; 3. Sealing cylinder; 31. Raised ring; 4. Mounting cap; 41. Mounting screw; 5. Sealing ring body; 51. Sealing groove; 52. Sealing gasket; 53. Sealing ring; 6. Rubber sealing gasket; 7. Mounting hole. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 5 As shown in the figure, this embodiment provides a high wear-resistant sealing ring for a vacuum pump, including a sealing seat 1, a connecting sleeve fixedly installed inside the sealing seat 1, a sealing cylinder 3 fixedly inserted into one side of the sealing seat 1, a sealing ring body 5 fixedly installed on the inner wall of the sealing cylinder 3, a sealing gasket 52 provided inside the sealing ring body 5, a sealing ring 53 fitted to the outer side of the sealing gasket 52, the sealing ring 53 being inserted and aligned with the connecting sleeve inside the sealing seat 1, a rubber sealing gasket 6 fixedly fitted to the inner wall of the sealing seat 1, a protruding ring 31 fixedly provided on the inner wall of the sealing cylinder 3 outside the sealing ring body 5, the protruding ring 31 and the rubber sealing gasket 6 being pressed against each other, and a locking structure 2 provided on the outer walls of the sealing seat 1 and the sealing cylinder 3.

[0024] like Figures 3 to 4As shown, the sealing ring body 5 has a sealing groove 51 inside. The sealing gasket 52 and the sealing ring 53 are both fixedly installed inside the sealing groove 51. One end of the connecting sleeve is adapted to the size of the sealing groove 51. The sealing cylinder 3 and the sealing seat 1 are inserted and aligned with each other. The sealing seat 1 has three mounting holes 7 inside. The sealing cylinder 3 is threaded with three mounting screws 41. One end of each mounting screw 41 is fixedly installed with a mounting cap 4. One end of the mounting screw 41 is connected to the inside of the mounting hole 7. The sealing ring body 5 is made of carbon-added silicon carbide ceramic material.

[0025] By setting a sealing gasket 52 and a sealing ring 53 inside the sealing ring body 5 respectively, it is easy to seal the sealing ring relative to the connecting sleeve inside the sealing seat 1, thereby improving the sealing effect of the connection between the vacuum pump and the sealing cylinder 3. The sealing ring is made of carbon-added silicon carbide ceramic material. Carbon-added silicon carbide is a composite material made by adding carbon fiber or other forms of carbon materials to the traditional silicon carbide ceramic. This material not only has the high strength and high hardness characteristics of silicon carbide ceramic, which can effectively resist wear, but also has better toughness due to the addition of carbon elements, which reduces the coefficient of friction. Even under extreme working conditions such as high temperature, high pressure and particulate impurities, the carbon-added silicon carbide ceramic sealing ring body can maintain good dimensional stability and surface smoothness, and is not easy to deform and wear, thus ensuring excellent sealing performance and ultra-long service life.

[0026] like Figure 5 As shown, the locking structure 2 includes a first sealing ring 21 and a second sealing ring 22. A limit rod 23 is fixedly installed at one end of the first sealing ring 21. The limit rod 23 is rotatably installed inside the second sealing ring 22. An installation block 24 is fixedly installed at one end of both the first sealing ring 21 and the second sealing ring 22. An installation gasket is provided on the outer wall of one of the installation blocks 24, and a bolt 25 is provided on the outer side of the installation block 24. One end of the bolt 25 is inserted into the installation gasket and the two installation blocks 24, and the extended end is threaded with a hexagonal nut 26.

[0027] The installation cap 4 and the installation screw 41 facilitate the initial fixing of the sealing cylinder 3 and the sealing seat 1. The first sealing ring 21 and the second sealing ring 22 are set and the bolts 25 and the hexagonal nuts 26 are used for limiting and fixing, which facilitates the double fixing of the sealing cylinder 3 and the sealing seat 1 and improves the installation stability of the sealing ring.

[0028] The working principle and process of this utility model are as follows: In the actual installation process, by connecting the sealing ring body 5 on the sealing cylinder 3 with the sealing seat 1, the convex ring 31 on the sealing cylinder 3 and the rubber sealing gasket 6 in the sealing seat 1 are pressed and aligned with each other to achieve initial sealing. At the same time, the connecting sleeve in the sealing seat 1 and the sealing groove 51 in the sealing ring body 5 are pressed and aligned with each other, causing one end of the connecting sleeve to press the sealing gasket 52 and sealing ring 53 in the sealing groove 51, causing them to deform and fill the gap between the sealing ring and the sealing seat 1, thus achieving double sealing. This facilitates the installation and connection of the sealing ring and the sealing seat 1 at one end of the vacuum pump for relative sealing, improving the sealing reliability of both.

[0029] After the sealing ring body is installed and sealed with the sealing seat 1, the three mounting caps 4 are rotated in sequence by a tool, so that the mounting caps 4 drive the mounting screws 41 to be screwed into the inside of the sealing cylinder 3, so that one end of the screws is connected to the mounting hole 7, which facilitates the initial fixing of the sealing ring and the sealing seat 1. Then, the operator puts the first sealing sleeve 21 and the second sealing sleeve 22 on the outer wall of the sealing cylinder 3 and the sealing seat 1. According to the diameter, the operator rotates the limiting rod 23 on the second sealing sleeve 22 to make the first sealing sleeve 21 and the second sealing sleeve 22 move closer to each other to fit the joint gap between the sealing cylinder 3 and the sealing seat 1. Then, the bolts 25 are inserted into the two mounting blocks 24. Finally, the bolts 25 are locked with hexagonal nuts 26 to lock the two sealing sleeves and improve the installation stability of the sealing ring body 5 and the sealing seat 1.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

Claims

1. A high wear-resistant sealing ring for a vacuum pump, characterized in that, The system includes a sealing seat (1), a connecting sleeve fixedly installed inside the sealing seat (1), a sealing cylinder (3) fixedly inserted into one side of the sealing seat (1), a sealing ring body (5) fixedly installed on the inner wall of the sealing cylinder (3), a sealing gasket (52) provided inside the sealing ring body (5), a sealing ring (53) fitted to the outer side of the sealing gasket (52), the sealing ring (53) being inserted and aligned with the connecting sleeve inside the sealing seat (1), a rubber sealing gasket (6) fixedly fitted to the inner wall of the sealing seat (1), a protruding ring (31) fixedly provided on the inner wall of the sealing cylinder (3) outside the sealing ring body (5), the protruding ring (31) and the rubber sealing gasket (6) being pressed against each other, and a locking structure (2) provided on the outer walls of the sealing seat (1) and the sealing cylinder (3).

2. The high wear-resistant sealing ring for a vacuum pump according to claim 1, characterized in that, The sealing ring body (5) has a sealing groove (51) inside. The sealing gasket (52) and sealing ring (53) are both fixedly installed inside the sealing groove (51). One end of the connecting sleeve is adapted to the size of the sealing groove (51).

3. The high wear-resistant sealing ring for a vacuum pump according to claim 2, characterized in that, The sealing cylinder (3) and the sealing seat (1) are inserted into each other and aligned. The sealing seat (1) has three mounting holes (7) inside, and the sealing cylinder (3) has three mounting screws (41) threaded inside.

4. The high wear-resistant sealing ring for a vacuum pump according to claim 3, characterized in that, One end of each mounting screw (41) is fixedly fitted with a mounting cap (4), and one end of the mounting screw (41) is connected to the inside of the mounting hole (7). The sealing ring body (5) is made of carbon-added silicon carbide ceramic material.

5. A high wear-resistant sealing ring for a vacuum pump according to claim 1, characterized in that, The locking structure (2) includes a first sealing ring (21) and a second sealing ring (22). A limit rod (23) is fixedly installed at one end of the first sealing ring (21). The limit rod (23) is rotatably installed inside the second sealing ring (22). An installation block (24) is fixedly installed at one end of both the first sealing ring (21) and the second sealing ring (22).

6. A high wear-resistant sealing ring for a vacuum pump according to claim 5, characterized in that, One of the mounting blocks (24) has a mounting gasket on its outer wall, and a bolt (25) is provided on the outside of the mounting block (24). One end of the bolt (25) is inserted into the mounting gasket and the two mounting blocks (24), and the extended end is threaded with a hexagonal nut (26).

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