CN215949854U

CN215949854U - Anti-corrosion centrifugal pump

Info

Publication number: CN215949854U
Application number: CN202122599537.2U
Authority: CN
Inventors: 张文杰; 郭双
Original assignee: Sdb Pump Valve Suzhou Co ltd
Current assignee: Sdb Pump Valve Suzhou Co ltd
Priority date: 2020-10-30
Filing date: 2021-10-27
Publication date: 2022-03-04
Anticipated expiration: 2031-10-27

Abstract

The utility model relates to an anti-corrosion centrifugal pump, which comprises a metal shell, a plastic shell arranged on the inner periphery of the metal shell, a bearing box, a rotating shaft rotationally arranged on the bearing box, an impeller arranged on one end part of the rotating shaft, a plastic cover body sleeved on the periphery of the rotating shaft and blocked at one side of the plastic shell, and a metal cover body sleeved on the periphery of the rotating shaft and connected between the metal shell and the bearing box, wherein the plastic shell is arranged on the inner periphery of the metal shell; the plastic cover body is positioned on one side of the plastic shell body close to the bearing box, and the metal cover body is positioned on one side of the metal shell body close to the bearing box; the impeller is positioned in a cavity formed by enclosing the plastic shell and the plastic cover body; the plastic shell and the metal shell are detachably clamped; according to the anti-corrosion centrifugal pump, the plastic shell can be independently disassembled through the structural design of the metal shell, the plastic shell and the plastic cover body and the metal cover body, so that the maintenance and the replacement are very convenient, the disassembly and assembly time during the maintenance is greatly shortened, the maintenance cost is reduced, and the application range of the centrifugal pump is expanded.

Description

Anti-corrosion centrifugal pump

Technical Field

The utility model relates to an anti-corrosion centrifugal pump.

Background

In the prior art, main parts of a pump are generally made of metal, but the metal has poor corrosion resistance, and cannot face fluid with strong corrosion, corrosion-resistant engineering plastics are used for manufacturing the pump in the market, and the all-plastic pump is indeed superior to a metal pump in corrosion resistance, strong acid and strong alkali resistance, but the use of the all-plastic pump is greatly limited due to low mechanical strength and short service life; at present, centrifugal pumps made of plastic liners have appeared in the market, and have certain mechanical strength and corrosion resistance; however, in the structure of the plastic liner, the internal plastic and the external metal shell are generally integrally injection molded, and cannot be disassembled and separated, so that the plastic liner is not easy to damage and maintain, and can only be integrally replaced, thereby increasing the maintenance cost; in addition, the impeller and the plastic lining are relatively fixed, so that the pumping flow of the pump body is constant, and the purpose of changing the pump flow to the plastic lining and the impeller cannot be achieved by changing the plastic lining and the impeller when the actual situation needs, and only one pump can be used.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide an anti-corrosion centrifugal pump.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

an anti-corrosion centrifugal pump comprises a metal shell, a plastic shell arranged on the inner periphery of the metal shell, a bearing box, a rotating shaft rotationally arranged on the bearing box, an impeller arranged on one end part of the rotating shaft, a plastic cover body sleeved on the periphery of the rotating shaft and blocked at one side of the plastic shell, and a metal cover body sleeved on the periphery of the rotating shaft and connected between the metal shell and the bearing box; the plastic cover body is positioned on one side of the plastic shell body close to the bearing box, and the metal cover body is positioned on one side of the metal shell body close to the bearing box; the impeller is positioned in a cavity formed by enclosing the plastic shell and the plastic cover body; the plastic shell and the metal shell are detachably clamped.

Preferably, the plastic cover body can be detachably clamped with the metal cover body.

Preferably, the metal shell comprises a first shell and a second shell which are matched and butted with each other, and the plastic shell is positioned in a cavity formed by the first shell and the second shell in a surrounding manner and attached to the inner peripheral surfaces of the first shell and the second shell.

Preferably, the plastic shell is detachably clamped with the first shell and the second shell respectively.

Preferably, a first clamping groove is formed in the first shell, a first clamping table matched and clamped with the first clamping groove is formed in the plastic shell, a second clamping table is formed in the second shell, and a second clamping groove matched and clamped with the second clamping table is formed in the plastic shell.

Preferably, a third clamping groove is formed in the plastic cover body, and a third clamping table matched and clamped with the third clamping groove is formed in the metal cover body.

Preferably, the outer periphery of the rotating shaft is sleeved with a shaft sleeve, a gap is reserved between the inner periphery of the shaft sleeve and the outer periphery of the rotating shaft, and a sealing assembly is arranged among the plastic cover body, the impeller and the shaft sleeve.

Preferably, an insert is fixedly embedded in the impeller, and one end of the rotating shaft is fixedly connected with the insert through threads.

Due to the implementation of the technical scheme, compared with the prior art, the utility model has the following advantages:

according to the anti-corrosion centrifugal pump, the plastic shell can be independently disassembled through the structural design of the metal shell, the plastic shell and the plastic cover body and the metal cover body, so that the maintenance and the replacement are very convenient, the disassembly and assembly time during the maintenance is greatly shortened, the maintenance cost is reduced, and the application range of the centrifugal pump is expanded.

Drawings

FIG. 1 is a side sectional view of a centrifugal pump according to the present invention;

fig. 2 is a side view schematic diagram of the centrifugal pump of the present invention.

Wherein: 10. a plastic housing; 11. a first housing; 12. a second housing; g1, plastic cover; g2, metal cover; t1, a first clamping table; t2, a second clamping table; t3, a third clamping table; 100. a bearing housing; 200. a rotating shaft; 21. an insert; 22. and (7) sealing the assembly.

Detailed Description

The utility model is described in further detail below with reference to the figures and specific examples.

As shown in fig. 1 and fig. 2, the anti-corrosion centrifugal pump is a heavy-load anti-corrosion centrifugal pump, and comprises a metal casing, a plastic casing 10 arranged on the inner periphery of the metal casing, a bearing box 100, a rotating shaft 200 rotatably arranged on the bearing box 100, an impeller arranged on one end of the rotating shaft 200, a plastic cover g1 sleeved on the outer periphery of the rotating shaft 200 and sealed on one side of the plastic casing 10, and a metal cover g2 sleeved on the outer periphery of the rotating shaft 200 and connected between the metal casing and the bearing box 100; the plastic cover g1 is positioned on one side of the plastic shell 10 close to the bearing box 100, and the metal cover g2 is positioned on one side of the metal shell close to the bearing box 100; a shaft sleeve is sleeved on the outer periphery of the rotating shaft 200, a gap is reserved between the inner periphery of the shaft sleeve and the outer periphery of the rotating shaft 200, and a sealing assembly 22 is arranged among the plastic cover body g1, the impeller and the shaft sleeve; the impeller is located in a cavity formed by enclosing the plastic shell 10 and the plastic cover g1, the plastic shell 10 and the metal shell are detachably clamped, and in addition, the plastic cover g1 can be detachably clamped with the metal cover g 2.

Specifically, the metal shell includes a first shell 11 and a second shell 12 which are matched and butted with each other, and the plastic shell 10 is located in a cavity formed by the first shell 11 and the second shell 12 and attached to the inner peripheral surfaces of the first shell 11 and the second shell 12. The plastic shell 10 is detachably clamped with the first shell 11 and the second shell 12 respectively. When the plastic shell 10 and the impeller of different models need to be replaced or the damaged plastic shell 10 and the impeller need to be replaced, the connecting bolt between the first shell 11 and the second shell 12 can be directly loosened, then the first shell 11 is detached from the second shell 12, the plastic shell 10 is exposed, so that the plastic shell 10 can be detached, and then the impeller can be continuously detached. Therefore, when the plastic casing 10 is disassembled, only the first casing 11 needs to be disassembled first, and the second casing 12, the plastic cover g1, the metal cover g2 and the like do not need to be disassembled, so that the disassembling and assembling operation is very convenient, and the sealing relationship among the plastic cover g1, the metal cover g2 and the impeller rotating shaft 200 cannot be influenced. When the plastic cover g1, the seal assembly 22, the shaft sleeve, the shaft 200, etc. are repaired or replaced, the connecting bolts between the metal cover g2 and the second housing 12 and the bearing housing 100 need to be removed.

In this example, a first clamping groove is formed on the first housing 11, a first clamping table t1 matched and clamped with the first clamping groove is formed on the plastic housing 10, a second clamping table t2 is formed on the second housing 12, and a second clamping groove matched and clamped with the second clamping table t2 is formed on the plastic housing 10; a third clamping groove is formed in the plastic cover body g1, and a third clamping table t3 matched and clamped with the third clamping groove is formed in the metal cover body g 2; through the structure that each draw-in groove and each ka tai cooperation joint, can let plastic housing 10, plastics lid g1 keep fine steadiness under the long-term service behavior of centrifugal pump, improve the life of centrifugal pump.

In addition, an insert 21 (metal insert 21) is fixedly embedded in the impeller, and one end of the rotating shaft 200 is fixedly connected with the insert 21 through threads, so that the rotating shaft 200 is more firmly connected with the impeller.

In summary, the anti-corrosion centrifugal pump of the utility model, through the structural design of the metal casing, the plastic cover body and the metal cover body, enables the plastic casing to be independently disassembled, is very convenient to maintain and replace, greatly shortens the disassembly and assembly time during maintenance, reduces the maintenance cost and also enlarges the application range of the centrifugal pump.

The present invention has been described in detail in order to enable those skilled in the art to understand the utility model and to practice it, and it is not intended to limit the scope of the utility model, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the present invention.

Claims

1. The utility model provides an anticorrosion centrifugal pump, includes metal casing, locates the plastic housing, the bearing box of metal casing internal week, rotate and locate pivot on the bearing box, locate the epaxial impeller of pivot tip, its characterized in that: the centrifugal pump also comprises a plastic cover body which is sleeved on the periphery of the rotating shaft and is blocked at one side of the plastic shell, and a metal cover body which is sleeved on the periphery of the rotating shaft and is connected between the metal shell and the bearing box; the plastic cover body is positioned on one side of the plastic shell body close to the bearing box, and the metal cover body is positioned on one side of the metal shell body close to the bearing box; the impeller is positioned in a cavity formed by enclosing the plastic shell and the plastic cover body; the plastic shell and the metal shell are detachably clamped.

2. The anti-corrosion centrifugal pump of claim 1, wherein: the plastics lid can with the joint can be dismantled to the metal lid.

3. The anti-corrosion centrifugal pump of claim 2, wherein: the metal shell comprises a first shell and a second shell which are matched and butted with each other, and the plastic shell is positioned in a cavity formed by the first shell and the second shell in a surrounding way and is attached to the inner peripheral surfaces of the first shell and the second shell.

4. The anti-corrosion centrifugal pump of claim 3, wherein: the plastic shell is detachably clamped with the first shell and the second shell respectively.

5. The anti-corrosion centrifugal pump of claim 4, wherein: the plastic shell is provided with a first clamping groove, a first clamping table matched and clamped with the first clamping groove is formed in the plastic shell, a second clamping table is formed in the second shell, and a second clamping groove matched and clamped with the second clamping table is formed in the plastic shell.

6. The anti-corrosion centrifugal pump of claim 1, wherein: and a third clamping groove is formed in the plastic cover body, and a third clamping table matched and clamped with the third clamping groove is formed on the metal cover body.

7. The anti-corrosion centrifugal pump of claim 1, wherein: the utility model discloses a plastic cover, including pivot, impeller, axle sleeve, plastics lid, impeller, pivot periphery cover and pivot periphery, the pivot periphery cover is equipped with the axle sleeve, have the clearance between axle sleeve inner periphery and the pivot periphery, be provided with seal assembly between plastics lid, impeller, the axle sleeve.

8. The anti-corrosion centrifugal pump of claim 1, wherein: an insert is fixedly embedded in the impeller, and one end of the rotating shaft is fixedly connected with the insert through threads.