Wear resistant mechanical seal ring

Abstract

The utility model discloses a kind of wear-resistant structure sealing rings, it is related to sealing ring technical field, including: fixed component, the fixed component is used to provide installation base for disassembly-free sealing seat component and with vacuum pump shell is connected;Two groups of symmetrically arranged disassembly-free sealing seat components, any one group The disassembly-free sealing seat component includes fixedly arranged in the guide housing of fixed seat front, the guide housing inside is slidably arranged with adjusting slide in horizontal direction, the inner end of the adjusting slide is fixedly connected with arc sealing press plate, the inner side middle part of the arc sealing press plate is fixedly arranged with locating block, operating groove is set in the middle part of arc sealing press plate front;And wear-resistant sealing ring body.The utility model is split set to wear-resistant sealing ring body, when wear-resistant sealing ring body is disassembled, without synchronously disassembling two groups of disassembly-free sealing seat components, simplifies dismounting procedure, use is more convenient.

Description

Technical Field

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

[0002] Screw vacuum pumps are a type of dry, oil-free positive displacement vacuum pump, widely used in pharmaceutical and chemical industries. At the connection between the rotor and the drive shaft, sealing rings are used to seal the bearings. To ensure service life, most of the sealing rings used have wear-resistant characteristics.

[0003] However, as the service life increases, the wear-resistant sealing ring will still need to be replaced due to wear. However, most of the existing wear-resistant sealing rings are integrated designs, which are inconvenient to disassemble. Although some sealing rings are composed of two semi-sealing rings that are relatively easy to disassemble, the sealing seat used to fix the two semi-sealing rings also needs to be disassembled at the same time, which is still not convenient enough.

[0004] Therefore, it is necessary to invent a wear-resistant sealing ring to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a wear-resistant structural sealing ring. When the wear-resistant sealing ring body is set in separate parts, it is not necessary to disassemble the two sets of non-removable sealing seat assemblies simultaneously when disassembling the wear-resistant sealing ring body. This simplifies the disassembly and assembly steps and makes it more convenient to use. This solves the problem mentioned in the background art that most existing wear-resistant sealing rings are integrated designs, which are inconvenient to disassemble. Although some sealing rings are composed of two relatively easy-to-disassemble half-sealing rings, the sealing seats used to fix the two half-sealing rings still need to be disassembled simultaneously during actual disassembly, which is still not convenient enough.

[0006] According to one aspect of this disclosure, the following technical solution is provided: a wear-resistant structural sealing ring, comprising:

[0007] A fixing component, which provides a mounting base for the non-removable sealing seat assembly and connects it to the vacuum pump housing;

[0008] Two sets of symmetrically arranged non-removable sealing seat assemblies, each set including a guide housing fixedly disposed on the front of the fixing seat, an adjusting slider slidably disposed horizontally on the inner side of the guide housing, an arc-shaped sealing pressure plate fixedly connected to the inner end of the adjusting slider, a positioning block fixedly disposed in the middle of the inner side of the arc-shaped sealing pressure plate, and an operating groove formed in the middle of the front of the arc-shaped sealing pressure plate; and

[0009] A wear-resistant sealing ring body, which is used for sealing bearings.

[0010] According to at least one embodiment of the wear-resistant structural sealing ring of the present disclosure, the non-removable sealing seat assembly further includes a clamping bolt disposed through the outside of the guide housing, the clamping bolt being screwed to the guide housing and the end of the clamping bolt abutting against an adjacent adjusting slider.

[0011] According to at least one embodiment of the wear-resistant structural sealing ring of the present disclosure, the fixing component includes a fixing seat, and the fixing seat has a plurality of mounting holes evenly formed on its front side.

[0012] According to at least one embodiment of the wear-resistant sealing ring of this disclosure, an avoidance groove is provided on the inner side of the fixed seat, and both of the arc-shaped sealing pressure plates are slidably disposed on the inner side of the avoidance groove in the horizontal direction.

[0013] According to at least one embodiment of the wear-resistant structural sealing ring of the present disclosure, the wear-resistant sealing ring body includes two symmetrically arranged semi-sealing rings, and a positioning groove is provided in the middle of the outer side of either semi-sealing ring.

[0014] According to at least one embodiment of the wear-resistant structural sealing ring of the present disclosure, any one of the semi-sealing rings is attached to the inner side of the adjacent arc-shaped sealing pressure plate, and any one of the positioning blocks is slidably attached to the inner side of the adjacent positioning groove.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] This invention features two symmetrically arranged, non-removable sealing seat assemblies. When disassembling the two semi-sealing rings that make up the wear-resistant sealing ring body, the two clamping bolts are loosened sequentially. At this point, the clamping bolts no longer restrain the adjusting slider, allowing it to slide outwards from the inner side of the adjacent guide housing. Then, a finger is placed inside the operating groove and pressed against the outer wall of the adjacent semi-sealing ring. Simultaneously, the semi-sealing ring slides outwards along the arc-shaped sealing pressure plate along the transmission axis. As the semi-sealing ring slides outwards, the positioning block located inside the positioning groove guides the semi-sealing ring until the positioning groove disengages from the outside of the positioning block. Compared to existing technologies, this invention, while separating the wear-resistant sealing ring body, eliminates the need for simultaneous disassembly of the two non-removable sealing seat assemblies during disassembly, simplifying the assembly and disassembly process and making it more convenient to use. Attached Figure Description

[0017] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0018] Figure 1 This is a schematic diagram of the overall structure of a wear-resistant sealing ring according to one embodiment of the present disclosure.

[0019] Figure 2 This is a schematic diagram of the fixing assembly and the non-removable sealing seat assembly of a wear-resistant structural sealing ring according to one embodiment of the present disclosure.

[0020] Figure 3 This is a schematic diagram of the wear-resistant sealing ring body structure according to one embodiment of the present disclosure.

[0021] The specific labels in the attached figures are as follows:

[0022] 1. Fixing component; 11. Fixing base; 12. Mounting hole; 13. Clearance groove;

[0023] 2. Removable sealing seat assembly; 21. Guide housing; 22. Adjusting slider; 23. Arc-shaped sealing pressure plate; 24. Positioning block; 25. Operating groove; 26. Tightening bolt;

[0024] 3. Wear-resistant sealing ring body; 31. Semi-sealing ring; 32. Positioning groove. Detailed Implementation

[0025] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” other components or features would subsequently be positioned “above” said other components or features. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0026] Figure 1 This is a schematic diagram of the overall structure of a wear-resistant sealing ring according to one embodiment of the present disclosure.

[0027] Figure 2 This is a schematic diagram of the structure of a wear-resistant structural sealing ring fixing assembly 1 and a non-removable sealing seat assembly 2 according to one embodiment of the present disclosure.

[0028] Figure 3 This is a schematic diagram of the wear-resistant sealing ring body 3 according to one embodiment of the wear-resistant structural sealing ring of the present disclosure.

[0029] like Figures 1-3As shown, the wear-resistant structural sealing ring disclosed herein is designed for screw vacuum pumps (requiring dry oil-free sealing). It addresses the shortcomings of existing sealing rings that are "difficult to disassemble as an integrated unit" and "requires disassembly of the sealing seat as a separate unit." Specifically, it includes components such as a fixing component 1, two sets of symmetrically arranged non-disassembly sealing seat assemblies 2, and a wear-resistant sealing ring body 3, achieving the goals of "reliable sealing, convenient disassembly and assembly, and wear resistance and durability."

[0030] like Figure 2 As shown in this disclosure, the fixing component 1 includes a fixing base 11, which is made of gray cast iron HT250 and is suitable for high pressure and high vibration scenarios. The surface is painted with anti-rust treatment. Multiple mounting holes 12 are evenly opened on the front of the fixing base 11, and a relief groove 13 is opened on the inner side of the fixing base 11. Two arc-shaped sealing pressure plates 23 are slidably arranged in the horizontal direction inside the relief groove 13.

[0031] Therefore, during actual installation, the mounting base 11 is fitted to the corresponding position of the vacuum pump housing, so that the four mounting holes 12 correspond one by one with the reserved screw holes on the vacuum pump housing. Then, the fixing bolts are passed through the mounting holes 12 and screwed into the reserved screw holes to press and fix the mounting base 11.

[0032] like Figure 2 As shown, in a preferred embodiment, any set of non-removable sealing seat assemblies 2 includes a guide housing 21 fixedly disposed on the front of the fixed seat 11. The guide housing 21 has a rectangular cavity structure with a rectangular inner cross-section adapted to the adjusting slider 22, with a fitting clearance of 0.02-0.05mm to ensure smooth horizontal sliding of the adjusting slider 22 without radial movement. The adjusting slider 22 is slidably disposed horizontally on the inner side of the guide housing 21. Its inner end is integrally formed with the arc-shaped sealing pressure plate 23, and its outer end has a pre-reserved plane for contact with the clamping bolt 26, ensuring uniform force when the bolt is tightened. The arc-shaped sealing pressure plate 23 is fixedly connected to the inner end of the adjusting slider 22, and its inner arc surface is adapted to the outer arc surface of the semi-sealing ring 31 (consistent curvature, fitting gap ≤0.03mm). To ensure uniform transmission of the clamping force on the sealing ring, a positioning block 24 is fixedly installed in the middle of the inner side of the arc-shaped sealing pressure plate 23. An operating groove 25 is opened in the middle of the front side of the arc-shaped sealing pressure plate 23, which allows the operator to insert their fingers or a thin lever to push the semi-sealing ring 31 for disassembly and assembly. The non-disassembly sealing seat assembly 2 also includes a clamping bolt 26 that passes through the outside of the guide housing 21. The clamping bolt 26 is screwed to the guide housing 21 and the end of the clamping bolt 26 abuts against the adjacent adjusting slider 22. The clamping bolt 26 adopts an internal hexagonal cylindrical head structure, is made of 304 stainless steel, has an oxidized and rust-proof surface, and has an M10×1.5 (fine thread) thread specification. The fine thread can improve the clamping stability and prevent the clamping bolt 26 from loosening due to vibration when the vacuum pump is working.

[0033] Therefore, when it is necessary to disassemble the two semi-sealing rings 31 that make up the wear-resistant sealing ring body 3, the two clamping bolts 26 are loosened one after another. At this time, the clamping bolts 26 no longer form a clamping limit on the adjusting slider 22, and the adjusting slider 22 can slide outward inside the adjacent guide housing 21. Then, the finger is placed inside the operating groove 25 and pressed against the outer wall of the adjacent semi-sealing ring 31. At the same time, the semi-sealing ring 31 slides outside the arc-shaped sealing pressure plate 23 along the transmission axis. When the semi-sealing ring 31 slides outward, the positioning block 24 located inside the positioning groove 32 guides the semi-sealing ring 31 until the positioning groove 32 is disengaged from the outside of the positioning block 24. Compared with the prior art, when the wear-resistant sealing ring body 3 is set up separately, it is not necessary to disassemble the two sets of non-removable sealing seat assemblies 2 at the same time when disassembling the wear-resistant sealing ring body 3, simplifying the disassembly and assembly steps and making it more convenient to use.

[0034] like Figure 3 As shown in this disclosure, the wear-resistant sealing ring body 3 includes two symmetrically arranged semi-sealing rings 31, which are made of high-density silicon carbide. Silicon carbide has excellent wear resistance (hardness above HRC90) and is suitable for high wear scenarios. A positioning groove 32 is provided in the middle of the outer side of any semi-sealing ring 31. Any semi-sealing ring 31 is attached to the inner side of the adjacent arc-shaped sealing pressure plate 23. Any positioning block 24 is slidably attached to the inner side of the adjacent positioning groove 32.

[0035] This allows the two semi-sealing rings 31 to close together and form a complete ring, thus creating a complete seal.

[0036] It should also be noted that any content not described in detail in this specification is prior art known to those skilled in the art.

[0037] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A wear-resistant structural sealing ring, characterized in that, include: A fixing component, which provides a mounting base for the non-removable sealing seat assembly and connects it to the vacuum pump housing; Two sets of symmetrically arranged non-removable sealing seat assemblies, each set including a guide housing fixedly disposed on the front of the fixing seat, an adjusting slider slidably disposed horizontally on the inner side of the guide housing, an arc-shaped sealing pressure plate fixedly connected to the inner end of the adjusting slider, a positioning block fixedly disposed in the middle of the inner side of the arc-shaped sealing pressure plate, and an operating groove formed in the middle of the front of the arc-shaped sealing pressure plate; and A wear-resistant sealing ring body, which is used for sealing bearings.

2. The wear-resistant sealing ring according to claim 1, characterized in that: The non-removable sealing seat assembly also includes a clamping bolt that passes through the outside of the guide housing. The clamping bolt is screwed to the guide housing and the end of the clamping bolt abuts against the adjacent adjusting slider.

3. The wear-resistant sealing ring according to claim 2, characterized in that: The fixing component includes a fixing base, and the fixing base has multiple mounting holes evenly distributed on its front side.

4. The wear-resistant sealing ring according to claim 3, characterized in that: The fixed base has an clearance groove on its inner side, and the two arc-shaped sealing pressure plates are slidably disposed on the inner side of the clearance groove in the horizontal direction.

5. The wear-resistant sealing ring according to claim 4, characterized in that: The wear-resistant sealing ring body includes two symmetrically arranged semi-sealing rings, and a positioning groove is provided in the middle of the outer side of each semi-sealing ring.

6. The wear-resistant sealing ring according to claim 5, characterized in that: Each of the semi-sealing rings is fitted to the inner side of the adjacent arc-shaped sealing pressure plate, and each of the positioning blocks is slidably fitted to the inner side of the adjacent positioning groove.

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