Sealing structure of multi-stage claw-type dry vacuum pump

Abstract

The utility model belongs to the technical field of vacuum pump sealing structures, and particularly relates to a sealing structure of a multi-stage claw type dry vacuum pump, which comprises a pump casing serving as a connecting base frame, a sealing component connected with the pump casing, a sealing structure serving as a connecting base and matched with a connecting component, a connecting component connected with the sealing component and matched with the sealing component. The heat conduction component is arranged on the sealing component, heat generated during working of the pump shell is guided out in an auxiliary mode, the situation that the heat accumulates in the pump shell, and consequently a sealing strip is heated and damaged is prevented, the flow guide grooves are matched with the communicating grooves, heat generated by compressed gas in the pump shell is guided to the heat conduction fins, and the heat is guided out in an auxiliary mode through the heat conduction fins. And heat accumulation is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pump sealing structures, in particular to a sealing structure of a multi-stage claw-type dry vacuum pump. Background Art

[0002] Due to the wide application of claw-type dry vacuum pumps in petrochemical industry, pharmaceutical industry, food industry, scientific research institutes and other industries and fields, various sealing structures for claw-type dry vacuum pumps are available:

[0003] Sealing strips, skeleton seals, mechanical seals, etc. all have their own shortcomings and deficiencies. For example, among the sealing strip structures and skeleton seals, most sealing strips are made of rubber materials. When vacuuming, compressed gas gathers in the chamber, which will generate high temperature and pressure, causing the rubber sealing strip structure to age faster, affecting the sealing performance during subsequent use. For this reason, a sealing structure of a multi-stage claw-type dry vacuum pump is provided. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] Therefore, the purpose of the present invention is to provide a sealing structure for a multi-stage claw-type dry vacuum pump, in which the buffer serves as a connecting middle end connecting the slide and the slide, so that the slide can move along the outer side of the slide within a certain stroke, providing a stable alternation of elastic potential energy and kinetic energy, and reliably and stably pushing the sealing frame and the sealing cover to form a reliable seal, avoiding the occurrence of sealing failure. The guide groove and the connecting groove are coordinated to guide the heat generated by the compressed gas in the pump casing to the heat-conducting fins, and the heat is assisted to be discharged through the heat-conducting fins, effectively preventing heat accumulation.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A sealing structure of a multi-stage claw-type dry vacuum pump, comprising:

[0008] As a pump casing connected to the base frame;

[0009] The sealing component is connected to the pump housing and serves as a connection base to cooperate with the connection component to form a sealing structure;

[0010] a connecting component connected to the sealing component and cooperating with the sealing component to form a movable sealed chamber;

[0011] The heat-conducting component is placed on the sealing component to assist in dissipating the heat generated by the pump casing, preventing heat from accumulating in the pump casing and causing damage to the sealing strip.

[0012] As a preferred solution of the sealing structure of a multi-stage claw-type dry vacuum pump described in the present invention, the sealing component includes a sealing frame connected to the pump casing, a slide is integrally formed on the outside of the sealing frame, a plurality of sealing grooves are linearly and equidistantly provided on the outside of the slide, and a plurality of buffers are connected to the outside of the slide.

[0013] As a preferred solution of the sealing structure of a multi-stage claw-type dry vacuum pump described in the present invention, multiple groups of buffers are arranged in a circular and equidistant manner along the outer side of the slide, and the other end of the buffer is connected to the connecting component.

[0014] As a preferred solution of the sealing structure of a multi-stage claw-type dry vacuum pump described in the utility model, wherein: the connecting component includes a sealing cover that is sleeved on the slide, the outer side of the sealing cover is integrally connected to a slide that slides with the slide, the slide is connected to the end of the buffer, and the outer side of the slide is connected to a sealing strip that is sealed with the sealing groove.

[0015] As a preferred solution of the sealing structure of a multi-stage claw-type dry vacuum pump described in the present invention, the heat-conducting component includes multiple groups of guide grooves opened on the inner side of the sealing frame, and multiple heat-conducting fins connected to the outer side of the sealing frame, and the multiple groups of guide grooves are connected by connecting grooves.

[0016] As a preferred solution of the sealing structure of a multi-stage claw-type dry vacuum pump described in the present invention, multiple groups of heat-conducting fins are arranged in an annular and equidistant manner along the outer side of the sealing frame, and the heat-conducting fins are arranged in a one-to-one correspondence with the guide grooves.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The buffer serves as a connecting middle end to connect the slide and the carriage, allowing the carriage to move along the outer side of the slide within a certain stroke, providing a stable alternation of elastic potential energy and kinetic energy, reliably and stably pushing the sealing frame and the sealing cover to form a reliable seal, thus avoiding seal failure.

[0019] 2. The guide groove and the connecting groove are arranged to guide the heat generated by the compressed gas in the pump casing to the heat-conducting fins, and the heat is assisted to be discharged through the heat-conducting fins, effectively preventing heat accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and detailed embodiments. 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 inventive labor. Among them:

[0021] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 For this utility model Figure 1 Schematic diagram of some structures;

[0023] Figure 3 For this utility model Figure 2 Schematic diagram of explosion structure;

[0024] Figure 4 For this utility model Figure 3 Look directly at the structural diagram.

[0025] In the figure: 100 pump housing, 200 sealing component, 210 sealing frame, 211 slide, 212 sealing groove, 220 buffer, 300 connecting component, 310 sealing cover, 311 slide, 320 sealing strip, 400 heat conducting component, 410 guide groove, 411 connecting groove, 420 heat conducting fin. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] This utility model provides a sealing structure for a multi-stage claw-type dry vacuum pump. Figure 1-4 , including a pump housing 100, a sealing component 200, a connecting component 300 and a heat conducting component 400;

[0031] Please continue reading Figure 1 , as a pump housing 100 connected to the base frame;

[0032] Please continue reading Figure 1 、 Figure 3 and Figure 4 , the sealing component 200 is connected to the pump housing 100, and serves as a connection base to cooperate with the connecting component 300 to form a sealing structure;

[0033] The sealing component 200 includes a sealing frame 210 connected to the pump housing 100. A slide 211 is integrally formed on the outer side of the sealing frame 210. Multiple sets of sealing grooves 212 are linearly and equidistantly formed on the outer side of the slide 211. Multiple sets of buffers 220 are threadedly connected to the outer side of the slide 211. The buffers 220 serve as connecting ends connecting the slide 211 and the slide 311, allowing the slide 311 to move along the outer side of the slide 211 within a certain stroke (similar to a mechanical seal structure). The multiple sets of buffers 220 are arranged in a circular shape and equidistantly along the outer side of the slide 211. The other ends of the buffers 220 are connected to the connecting component 300.

[0034] Please continue reading Figure 1-4 , the connecting component 300 is connected to the sealing component 200 and cooperates with the sealing component 200 to form a movable sealed chamber (not marked in the figure);

[0035] The connecting component 300 includes a sealing cover 310 that is sleeved on the slide 211. The outer side of the sealing cover 310 is integrally connected to a slide 311 that slides with the slide 211. The slide 311 is screwed to the end of the buffer 220. The outer side of the slide 311 is connected to a sealing strip 320 that is sealed with the sealing groove 212. Under the action of the buffer 220, the slide 311 moves horizontally along the outer side of the slide 211. The sealing strip 320 cooperates with the sealing groove 212 to increase the sealing chamber while ensuring the sealing effect (the buffer limits the movement stroke to ensure that both are always in a sealed state).

[0036] Please continue reading Figure 2 The heat conducting component 400 is placed on the sealing component 200 to assist in dissipating the heat generated by the pump housing 100 during operation, thereby preventing the heat from accumulating in the pump housing 100 and causing the sealing strip to be damaged by heat;

[0037] The heat-conducting component 400 includes multiple groups of guide grooves 410 provided on the inner side of the sealing frame 210, and multiple heat-conducting fins 420 connected to the outer side of the sealing frame 210. The multiple groups of guide grooves 410 are connected by connecting grooves 411. The multiple groups of heat-conducting fins 420 are arranged in an annular shape and equidistantly along the outer side of the sealing frame 210, and the heat-conducting fins 420 are arranged one-to-one with the guide grooves 410. The guide grooves 410 cooperate with the connecting grooves 411 to guide the heat generated by the compressed gas in the pump housing 100 to the heat-conducting fins 420. The heat is then dissipated through the heat-conducting fins 420, effectively preventing heat accumulation.

[0038] Working principle: When the utility model is in use, the buffer 220 serves as the connecting middle end to connect the slide 211 and the slide 311, so that the slide 311 can move along the outer side of the slide 211 within a certain stroke, providing stable elastic potential energy and kinetic energy alternating, and reliably and stably pushing the sealing frame 210 and the sealing cover 310 to form a reliable sealing fit, avoiding the occurrence of sealing failure, and the provided guide groove 410 cooperates with the connecting groove 411 to guide the heat generated by the compressed gas in the pump casing 100 to the heat-conducting fins 420, and the heat is assisted to be discharged through the heat-conducting fins 420, effectively preventing heat accumulation.

[0039] While the present invention has been described above with reference to specific embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as no structural conflicts exist, the various features of the embodiments disclosed herein may be combined with one another in any manner, and the omission of an exhaustive description of these combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A sealing structure of a multi-stage claw-type dry vacuum pump, characterized in that: include: A pump housing (100) as a connection base; A sealing component (200) is connected to the pump housing (100) and serves as a connection base to cooperate with the connection component (300) to form a sealing structure; A connecting component (300) is connected to the sealing component (200) and cooperates with the sealing component (200) to form a movable sealed chamber; The heat conducting component (400) is placed on the sealing component (200) to assist in dissipating the heat generated by the operation of the pump housing (100), thereby preventing the heat from accumulating in the pump housing (100) and causing the sealing strip to be damaged by heat.

2. The sealing structure of a multi-stage claw-type dry vacuum pump according to claim 1, characterized in that: The sealing component (200) comprises a sealing frame (210) connected to the pump housing (100), a sliding seat (211) integrally formed on the outer side of the sealing frame (210), a plurality of sealing grooves (212) linearly and equidistantly provided on the outer side of the sliding seat (211), and a plurality of buffers (220) connected to the outer side of the sliding seat (211).

3. The sealing structure of a multi-stage claw-type dry vacuum pump according to claim 2, characterized in that: A plurality of groups of the buffers (220) are arranged in a circular pattern at equal intervals along the outer side of the slide seat (211), and the other end of the buffer (220) is connected to the connecting component (300).

4. The sealing structure of a multi-stage claw-type dry vacuum pump according to claim 3, characterized in that: The connecting component (300) includes a sealing cover (310) sleeved on the slide seat (211), a slide frame (311) slidably engaged with the slide seat (211) is integrally formed on the outer side of the sealing cover (310), the slide frame (311) is connected to the end of the buffer (220), and a sealing strip (320) is connected to the outer side of the slide frame (311) and is sealed to the sealing groove (212).

5. The sealing structure of a multi-stage claw-type dry vacuum pump according to claim 4, characterized in that: The heat-conducting component (400) comprises a plurality of groups of guide grooves (410) opened on the inner side of the sealing frame (210), and a plurality of heat-conducting fins (420) connected to the outer side of the sealing frame (210), and the plurality of groups of guide grooves (410) are connected via connecting grooves (411).

6. The sealing structure of a multi-stage claw-type dry vacuum pump according to claim 5, characterized in that: A plurality of groups of heat-conducting fins (420) are arranged in an annular manner and at equal intervals along the outer side of the sealing frame (210), and the heat-conducting fins (420) and the guide grooves (410) are arranged in a one-to-one correspondence.

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