CN209818395U

CN209818395U - Volute assembly of centrifugal pump

Info

Publication number: CN209818395U
Application number: CN201920674711.5U
Authority: CN
Inventors: 胡兴
Original assignee: CHONGQING TIANZHIYUAN MACHINERY Co Ltd
Current assignee: CHONGQING TIANZHIYUAN MACHINERY Co Ltd
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2019-12-20
Anticipated expiration: 2029-05-13

Abstract

The utility model discloses a volute assembly of a centrifugal pump, which comprises a volute consisting of a first shell and a second shell; a sealing groove for placing a sealing strip is formed between the first shell and the second shell; the sealing groove comprises a first groove arranged on the butt joint surface of the first shell, a second groove arranged on the end surface of the water outlet of the first shell and a third groove arranged on the end surface of the water outlet of the second shell; the first groove is communicated with the second groove to surround the profile of the cavity on the first shell; the third groove is communicated with the second groove to surround the profile of a cavity on the end face of the water outlet of the volute. By adopting the technical scheme of the utility model, the first groove and the second groove which are communicated with each other, and the second groove and the third groove which are communicated with each other are formed; the sealing strip placed in the sealing groove completely surrounds the cavity of the volute, so that the situation of water leakage cannot occur after the first shell and the second shell are assembled, and the sealing performance is good.

Description

Volute assembly of centrifugal pump

Technical Field

The utility model relates to a water pump field, concretely relates to spiral case assembly of centrifugal pump.

Background

The volute pump is one kind of centrifugal pump, and conveys liquid into spiral volute cavity via the centrifugal force produced by the rotation of the impeller. The existing volute is generally integrally formed by casting, has complex production process, longer period and lower production efficiency, and is only suitable for small-scale production.

In order to improve the production efficiency of the volute, the volute is generally divided into a left shell and a right shell in the prior art, the left shell and the right shell are manufactured in a die-casting mode, butt joint surfaces of the two shells are abutted in the assembling process, and the complete volute is assembled by fastening through bolts. The production process is simple, the product precision is higher, and the working efficiency can be improved. But only by the abutting surfaces of the two shells, the sealing performance is poor.

Disclosure of Invention

Lead to the relatively poor problem of spiral case leakproofness because of two casings only lean on the cooperation of butt joint plane for the solution, the utility model provides a spiral case assembly of centrifugal pump through set up the seal groove that surrounds the die cavity profile on the casing to utilize the sealing strip to surround the die cavity of spiral case, it is sealed effectual.

The technical proposal of the utility model is that,

a volute assembly of a centrifugal pump includes a volute comprised of a first housing and a second housing; a sealing groove for placing a sealing strip is formed between the first shell and the second shell; the sealing groove comprises a first groove arranged on the butt joint surface of the first shell, a second groove arranged on the end surface of the water outlet of the first shell and a third groove arranged on the end surface of the water outlet of the second shell; the first groove is communicated with the second groove to surround the profile of the cavity on the first shell; the third groove is communicated with the second groove to surround the profile of a cavity on the end face of the water outlet of the volute.

By adopting the technical scheme of the utility model, the first groove and the second groove which are communicated with each other, and the second groove and the third groove which are communicated with each other are formed; the sealing strip placed in the sealing groove completely surrounds the cavity of the volute, so that the situation of water leakage cannot occur after the first shell and the second shell are assembled, and the sealing performance is good.

Preferably, the sealing strip consists of an end face sealing section and a butt sealing section which are integrally formed; the butt joint sealing section is arranged in the first groove; the end face sealing section is arranged in the second groove and the third groove. The sealing effect of the integrally formed sealing strip is good, and the mounting is convenient.

Preferably, a cover plate is fixedly arranged on the end face of the water outlet of the volute; the cover plate is provided with a rubber check valve. Ensuring that the liquid does not flow back.

Preferably, the end face of the water outlet of the volute is connected with a three-way pipe. Can plug up a delivery port of three-way pipe according to actual demand, select the water outlet direction, convenient operation.

The beneficial effects of the utility model are that, when the spiral case can batch production, the leakproofness of spiral case is good, and the installation is swift, environmental protection and energy saving, convenient to use.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Figure 2 is an exploded view of the volute and seal strip.

Fig. 3 is a front view of the first housing.

Fig. 4 is an isometric view of the second housing.

In the figure, a first shell 1, a second shell 2, a sealing strip 3, an end face sealing section 31, a butt sealing section 32, a first groove 4, a second groove 5, a third groove 6, a water outlet end face 7, a butt joint face 8, a cover plate 9, a rubber check valve 10, a three-way pipe 11 and a block seal 12.

Detailed Description

As shown in fig. 1 to 4, a volute assembly of a centrifugal pump includes a volute composed of a first housing 1 and a second housing 2; a sealing groove for placing a sealing strip 3 is formed between the first shell 1 and the second shell 2; the seal groove comprises a first groove 4 arranged on a butt joint surface 8 of the first shell 1, a second groove 5 arranged on a water outlet end surface 7 of the first shell 1 and a third groove 6 arranged on a water outlet end surface 7 of the second shell 2. The first groove 4 is curved along the contour of the cavity on the abutting surface 8 of the first shell 1, and surrounds the cavity on the abutting surface 8. The second groove 5 is bent along the contour of the cavity on the water outlet end surface 7 of the first shell 1 to surround the contour of the cavity on the water outlet end surface 7 of the first shell 1. The third groove 6 is bent along the contour of the cavity on the water outlet end surface 7 of the second shell 2 to surround the contour of the cavity on the water outlet end surface 7 of the second shell 2. The first groove 4 is communicated with the second groove 5, and the third groove 6 is communicated with the second groove 5, so that the contour of a cavity in the volute is completely surrounded.

In order to facilitate the installation of the sealing strip 3, the sealing strip 3 consists of an end face sealing section 31 and a butt sealing section 32 which are integrally formed; the butt seal section 32 is mounted in the first groove 4; the face seal segments 31 are mounted in the second groove 5 and the third groove 6. In order to ensure that liquid in the centrifugal pump does not flow back, a cover plate 9 is fixedly arranged on the water outlet end surface 7 of the volute; a rubber check valve 10 is mounted on the cover plate 9. Wherein, the water outlet end face 7 of the volute is connected with a three-way pipe 11, and a water outlet of the three-way pipe is sealed by a sealing plug 12.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. A volute assembly of a centrifugal pump comprises a volute consisting of a first housing (1) and a second housing (2); the sealing device is characterized in that a sealing groove for placing a sealing strip (3) is formed between the first shell (1) and the second shell (2); the sealing groove comprises a first groove (4) arranged on a butt joint surface (8) on the first shell (1), a second groove (5) of a water outlet end surface (7) of the first shell (1), and a third groove (6) of the water outlet end surface (7) of the second shell (2); the first groove (4) is communicated with the second groove (5) to surround the profile of a cavity on the first shell (1); the third groove (6) is communicated with the second groove (5) to surround the profile of a cavity of the end face (7) of the water outlet of the volute.

2. The volute assembly of a centrifugal pump according to claim 1, wherein the seal strip (3) consists of an end face seal section (31) and a butt seal section (32) which are integrally formed; the butt joint sealing section (32) is arranged in the first groove (4); the end face sealing section (31) is arranged in the second groove (5) and the third groove (6).

3. The volute assembly of a centrifugal pump according to claim 2, wherein a cover plate (9) is fixedly arranged on the water outlet end surface (7) of the volute; the cover plate (9) is provided with a rubber check valve (10).

4. The volute assembly of a centrifugal pump according to any of claims 1-3, wherein a tee (11) is connected to the water outlet end face (7) of the volute.