CN216742135U

CN216742135U - High-speed centrifugal pump seal structure

Info

Publication number: CN216742135U
Application number: CN202121248867.0U
Authority: CN
Inventors: 张爱华
Original assignee: Hebei Jiuxin Testing Technology Service Co ltd
Current assignee: Hebei Jiuxin Testing Technology Service Co ltd
Priority date: 2021-06-05
Filing date: 2021-06-05
Publication date: 2022-06-14
Anticipated expiration: 2031-06-05

Abstract

The utility model discloses a sealing structure of a high-speed centrifugal pump, which comprises a shell, wherein a cavity is formed in the shell; and the sealing assembly is fixedly clamped in the cavity. Set the sealing washer to overall structure joint inside the casing, and then can avoid having the condition in clearance between the sealing washer, and at the sealed snap ring of sealing washer outer wall installation, it is inseparabler to further make to be connected between seal assembly and the casing, and the leakproofness is better.

Description

High-speed centrifugal pump seal structure

Technical Field

The utility model relates to the field of centrifugal pumps, in particular to a sealing structure of a high-speed centrifugal pump.

Background

A high-speed pump, also called a high-speed partial-flow pump, belongs to a centrifugal pump. The basic working principle of the high-speed pump is similar to that of a common centrifugal pump, except that the working impeller obtains a working rotating speed which is several times that of the impeller of the common centrifugal pump by using the speed increasing function of a speed increasing box (primary speed increasing or secondary speed increasing), the high-lift purpose is achieved by increasing the rotating speed of the impeller and increasing the fluid linear speed at the outer edge of the impeller, and the defects of most of multi-stage pumps are eliminated.

The basic structure of the centrifugal pump is composed of six parts, namely an impeller, a pump body, a pump shaft, a bearing, a sealing ring and a stuffing box. The sealing ring in the existing sealing component is usually a single part installed in a separated mode, and due to the structure, a certain gap exists between the sealing rings, so that the sealing performance of the whole sealing component is poor.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a sealing structure of a high-speed centrifugal pump, which can ensure that the sealing performance of a sealing part is better.

In order to solve the technical problems, the utility model provides the following technical scheme: comprises that

The device comprises a shell, a shell and a cover, wherein a cavity is formed in the shell;

and the sealing assembly is fixedly clamped in the cavity.

As a preferred technical scheme of the utility model, the sealing assembly comprises a sealing ring, a plurality of sealing snap rings which are distributed at equal intervals are fixedly arranged on a concentric shaft of the outer wall of the sealing ring, and a limit groove is formed between the two sealing snap rings.

As a preferred technical scheme of the utility model, a fixed snap ring is fixedly arranged on the cavity wall of the containing cavity.

As a preferred technical scheme of the utility model, the fixed clamping ring and the limiting groove are mutually clamped.

As a preferred technical scheme of the present invention, the housing is of a splicing structure, wherein one side of one section of the housing is fixedly provided with a plurality of clamping blocks, one side of the other section of the housing is provided with a plurality of clamping grooves, and the clamping blocks and the clamping grooves are clamped with each other.

As a preferable technical scheme of the utility model, a rubber pad is bonded on the inner wall of the clamping groove.

According to a preferable technical scheme of the utility model, the two ends of the shell are both provided with second unthreaded holes, the fixture block and the rubber pad are both provided with first unthreaded holes, the bottom of the clamping groove is provided with a threaded hole, the threaded hole is internally and threadedly connected with a bolt, and the bolt penetrates through the first unthreaded hole and the second unthreaded hole and is in threaded connection with the threaded hole.

As a preferred technical solution of the present invention, the housing and the sealing assembly are detachable.

Compared with the prior art, the utility model can achieve the following beneficial effects:

1. the sealing ring is arranged into an integral structure and clamped in the shell, so that a gap between the sealing rings can be avoided, and the sealing snap ring is arranged on the outer wall of the sealing ring, so that the sealing assembly and the shell are connected more tightly, and the sealing performance is better;

2. set the casing to mosaic structure, and then when changing seal assembly, it is all more convenient to dismantle and install, and sets up the rubber pad at two sections casing link, can increase the compactness between the two, connects more firmly.

Drawings

FIG. 1 is a schematic view of the overall structure of a sealing structure of a high-speed centrifugal pump according to the present invention;

FIG. 2 is a schematic view of a partial explosion structure of a seal structure of a high-speed centrifugal pump of the present invention in FIG. 1;

FIG. 3 is a schematic view of the internal structure of the casing of the sealing structure of the high-speed centrifugal pump according to the present invention;

FIG. 4 is a schematic cross-sectional structural view of a seal assembly of a high-speed centrifugal pump seal structure of the present invention;

fig. 5 is a schematic view of a partial explosion structure of a sealing structure shell of the high-speed centrifugal pump.

Wherein: 1. a housing; 2. a cavity; 3. a seal assembly; 4. a seal ring; 5. sealing the snap ring; 6. a limiting groove; 7. fixing the snap ring; 8. a clamping block; 9. a card slot; 10. a rubber pad; 11. a first light hole; 12. a bolt; 13. a second light aperture.

Detailed Description

The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example 1

Referring to FIGS. 1-3, the present invention provides a method comprising

The device comprises a shell 1, wherein a containing cavity 2 is formed in the shell 1;

and the sealing component 3 is fixedly clamped in the cavity 2.

Referring to fig. 2 and 4, as a further embodiment of this embodiment 1, the present invention provides that the sealing assembly 3 includes a sealing ring 4, a plurality of sealing clasps 5 are fixedly mounted on a concentric shaft on an outer wall of the sealing ring 4, the sealing clasps 5 are distributed at equal intervals, a limiting groove 6 is formed between the two sealing clasps 5, a fixing clasp 7 is fixedly mounted on a cavity wall of the cavity 2, and the fixing clasp 7 is clamped with the limiting groove 6;

set up overall structure joint to sealing washer 4 inside casing 1, and then can avoid having the condition in clearance between the sealing washer 4, and at the sealed snap ring 5 of 4 outer wall installations of sealing washer, it is inseparabler to further make to be connected between seal assembly 3 and the casing 1, and the leakproofness is better.

Example 2

Referring to fig. 1, 2, and 5, other parts of this embodiment 2 are the same as those of the embodiment 1, and different parts are that the present invention provides that the housing 1 is a split structure, wherein one side of one section of the housing 1 is fixedly installed with a plurality of clamping blocks 8, one side of the other section of the housing 1 is installed with a plurality of clamping grooves 9, inner walls of the clamping grooves 9 are bonded with rubber pads 10, the clamping blocks 8 and the clamping grooves 9 are clamped with each other, two ends of the housing 1 are both provided with second unthreaded holes 13, the clamping blocks 8 and the rubber pads 10 are both provided with first unthreaded holes 11, the bottoms of the clamping grooves 9 are provided with threaded holes, the threaded holes are internally threaded with bolts 12, the bolts 12 penetrate through the first unthreaded holes 11 and the second unthreaded holes 13 to be in threaded connection with the threaded holes, and the housing 1 and the sealing assembly 3 are both detachable;

set casing 1 to mosaic structure, and then when changing seal assembly 3, it is all more convenient to dismantle and install, and sets up rubber pad 10 at two sections 1 links of casing, can increase the compactness between the two, connects more firmly.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A high-speed centrifugal pump seal structure which characterized in that: comprises that

The device comprises a shell (1), wherein a containing cavity (2) is formed in the shell (1);

the sealing assembly (3) is fixedly clamped in the accommodating cavity (2).

2. A high-speed centrifugal pump seal structure according to claim 1, wherein: seal assembly (3) include sealing washer (4), sealing washer (4) outer wall concentric shaft fixed mounting has a plurality of equidistance the sealed snap ring (5) that distribute, two form a spacing groove (6) between sealed snap ring (5).

3. A high-speed centrifugal pump seal structure according to claim 2, wherein: and a fixed snap ring (7) is fixedly arranged on the cavity wall of the accommodating cavity (2).

4. A high-speed centrifugal pump seal structure according to claim 3, wherein: the fixed clamping ring (7) is clamped with the limiting groove (6) mutually.

5. A high-speed centrifugal pump seal structure according to claim 1, wherein: casing (1) is the concatenation formula structure, one of them section casing (1) one side fixed mounting has a plurality of fixture block (8), another section a plurality of draw-in groove (9) have been seted up to casing (1) one side, fixture block (8) with the mutual joint of draw-in groove (9).

6. A high-speed centrifugal pump seal structure according to claim 5, wherein: and a rubber pad (10) is bonded on the inner wall of the clamping groove (9).

7. A high-speed centrifugal pump seal structure according to claim 6, wherein: second unthreaded hole (13) have all been seted up at casing (1) both ends, fixture block (8) with all seted up first unthreaded hole (11) on rubber pad (10), threaded hole is seted up to draw-in groove (9) tank bottom, threaded connection has bolt (12) in the screw hole, bolt (12) run through first unthreaded hole (11) and second unthreaded hole (13) with screw hole threaded connection.

8. A high-speed centrifugal pump seal structure according to claim 1, wherein: the shell (1) and the sealing assembly (3) are detachable.