CN219035128U

CN219035128U - Self-priming centrifugal pump shell

Info

Publication number: CN219035128U
Application number: CN202223335758.XU
Authority: CN
Inventors: 施洪旭
Original assignee: Flowserve Fluid Motion and Control Suzhou Co Ltd
Current assignee: Flowserve Fluid Motion and Control Suzhou Co Ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-05-16
Anticipated expiration: 2032-12-12

Abstract

The utility model discloses a self-priming centrifugal pump shell, which comprises a pump body, wherein a fixing shell is arranged on the pump body, an adapter is fixedly connected to the left side of the fixing shell through a first bolt, an impeller is rotatably connected to the right side of the adapter, a handle body is rotatably connected to the adapter, a bearing shell is fixedly connected to the left side of the adapter through a fixing bolt, a bearing is fixedly connected to the bearing shell, and a thrust ball bearing is fixedly connected to the bearing shell. After the pump body is started normally, the impeller sucks the liquid and air stored in the suction cavity together, the inside of the impeller is completely mixed, a white foam belt and a liquid ring rotating at a high speed are formed on the outer edge of the impeller, lighter gas is separated from mixed gas and liquid due to rapid reduction of flow, self-priming capability is strong, the gas continuously rises and is discharged through the first exhaust hole and the second exhaust hole of the pump body, and the exhaust rate is improved by simultaneously exhausting through the first exhaust hole and the second exhaust hole.

Description

Self-priming centrifugal pump shell

Technical Field

The utility model relates to a centrifugal pump shell, in particular to a self-priming centrifugal pump shell, and belongs to the field of centrifugal pumps.

Background

The centrifugal pump is a vane pump which conveys liquid by the centrifugal force generated when the impeller rotates, and the mechanical energy is transmitted to the liquid by the vane due to the interaction of the vane and the liquid in the rotating process of the impeller, so that the pressure energy of the liquid is increased, and the purpose of conveying the liquid is achieved. Centrifugal pumps are of various types, such as vertical, horizontal, single-stage, multi-stage, single-suction, double-suction, self-suction, and the like. The fiber is widely applied to industry and city water supply and drainage, energy, metallurgy, chemical industry, textile, paper making, petroleum, electric power, paper making, food pharmacy, synthetic fiber and the like;

the traditional self-priming centrifugal pump has the defects that the pump body is overlarge in volume, the self-priming performance of an impeller is poor, liquid flows back along a guide vane flow channel when the self-priming centrifugal pump discharges air, the air discharge rate is low, and therefore, the self-priming centrifugal pump shell is provided.

Disclosure of Invention

The present utility model is directed to a self-priming centrifugal pump housing that solves the problems set forth in the background art described above.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the self-priming centrifugal pump shell comprises a pump body, a fixing shell is arranged on the pump body, an adapter is fixedly connected to the left side of the fixing shell through a first bolt, an impeller is connected to the right side of the adapter in a rotating mode, a handle body is connected to the adapter in a rotating mode, a bearing shell is fixedly connected to the left side of the adapter through the fixing bolt, a bearing is fixedly connected to the bearing shell, a thrust ball bearing is fixedly connected to the bearing shell, a bearing component is fixedly connected to the outer side of the handle body and the inner side of an inner ring of the thrust ball bearing and the bearing, a bearing locking nut is fixedly connected to the bearing shell, a constant liquid level cup is fixedly connected to the bearing shell, a mechanical sealing structure is fixedly connected to the adapter, an annular adapter is fixedly connected to the adapter, the annular adapter is fixedly connected to the handle body, a first exhaust hole is formed in one side of the bearing shell, and a second exhaust hole is formed in the top of the bearing shell.

Further preferably, a supporting seat is movably contacted with the bottom of the bearing shell, and the supporting seat is in threaded connection with the bearing shell through a screw rod.

Further preferably, a ring bearing carrier is fixedly connected to the bearing shell, and the ring bearing carrier is fixedly connected with the handle body.

Further preferably, the right side of the fixed shell is movably contacted with a locking washer.

Further preferably, the left side of the bearing shell is fixedly connected with a shell.

Further preferably, the support seat is provided with a threaded hole, and the threaded hole is in threaded connection with the screw rod.

Further preferably, a cover gasket and a gasket are fixedly connected to the left side of the fixing shell, and the cover gasket and the gasket are in threaded connection with the adapter through a second bolt.

Compared with the prior art, the utility model has the beneficial effects that: after the pump body is started normally, the impeller sucks the liquid and air stored in the suction cavity together, the inside of the impeller is completely mixed, a white foam belt and a liquid ring rotating at a high speed are formed on the outer edge of the impeller, lighter gas is separated from mixed gas and liquid due to rapid reduction of flow, self-priming capability is strong, the gas continuously rises and is discharged through the first exhaust hole and the second exhaust hole of the pump body, and the exhaust rate is improved by simultaneously exhausting through the first exhaust hole and the second exhaust hole.

Drawings

Fig. 1 is a schematic cross-sectional view of the present utility model.

Fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure: 1. a pump body; 2. a fixed case; 3. a gasket; 4. an impeller; 5. an adapter; 6. a handle body; 7. a bearing; 8. thrust ball bearings; 9. a second exhaust hole; 10. a support base; 11. a bearing housing; 12. a carrier member; 13. a bearing lock nut; 14. a constant liquid level oil cup; 15. a mechanical seal structure; 16. a cover gasket; 17. a housing; 18. a ring adapter; 19. a ring shaft carrier; 20. a first exhaust hole; 21. a lock washer; 22. a fixing bolt; 23. a screw; 24. a first bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1-2, the present utility model provides a technical solution: the self-priming centrifugal pump shell comprises a pump body 1, a fixed shell 2 is arranged on the pump body 1, an adapter 5 is fixedly connected to the left side of the fixed shell 2 through a first bolt 24, an impeller 4 is rotatably connected to the right side of the adapter 5, a handle body 6 is rotatably connected to the adapter 5, a bearing shell 11 is fixedly connected to the left side of the adapter 5 through a fixed bolt 22, a bearing 7 is fixedly connected to the bearing shell 11, a thrust ball bearing 8 is fixedly connected to the bearing shell 11, the outer side of the handle body 6 is fixedly connected with the thrust ball bearing 8 and the inner side of the inner ring of the bearing 7, a bearing member 12 is fixedly connected to the bearing shell 11, a bearing locking nut 13 is fixedly connected to the bearing 7, a constant liquid level oil cup 14 is fixedly connected to the bearing shell 11, a mechanical sealing structure 15 is fixedly connected to the handle body 6, an annular adapter 18 is fixedly connected to the adapter 5, the annular adapter 18 is fixedly connected to the handle body 6, a first exhaust hole 20 is formed in one side of the bearing shell 11, and a second exhaust hole 9 is formed in the top of the bearing shell 11;

in this embodiment, specific: the bottom of the bearing shell 11 is movably contacted with a supporting seat 10, the supporting seat 10 is in threaded connection with the bearing shell 11 through a screw rod 23, and the supporting seat 10 and the bearing shell 11 are convenient to quickly disassemble and assemble through the arrangement of the screw rod 23, and the supporting seat 10 supports the bearing shell 11;

in this embodiment, specific: the bearing shell 11 is fixedly connected with the ring bearing carrier 19, the ring bearing carrier 19 is fixedly connected with the handle body 6, and friction is reduced due to the arrangement of the ring bearing carrier 19, so that the handle body 6 rotates more stably;

in this embodiment, specific: the right side of the fixed shell 2 is movably contacted with a locking washer 21, and the locking washer 21 is arranged to increase stability;

in this embodiment, specific: the left side of the bearing shell 11 is fixedly connected with a shell 17, and the bearing shell is protected by the arrangement of the shell 17 to prevent damage;

in this embodiment, specific: the support seat 10 is provided with a threaded hole, the threaded hole is in threaded connection with the screw 23, and the support seat 10 and the bearing shell 11 are firmer under the biting force of the threaded hole and the screw 23;

in this embodiment, specific: the left side fixedly connected with lid packing piece 16 and gasket 3 of fixed shell 2, lid packing piece 16 and gasket 3 pass through No. two bolt threaded connection with adapter 5, through the setting of lid packing piece 16 and gasket 3, have improved its sealed effect.

The utility model works when in work: when the pump is used, the pump body 1 structure of axial liquid return is adopted, after the pump body 1 is started normally, the impeller 4 sucks liquid and air stored in the suction cavity together, the inside of the impeller 4 is completely mixed, a white foam belt and a liquid ring rotating at high speed are formed on the outer edge of the impeller 4, the gas-liquid mixture enters the gas-liquid separation chamber through the diffusion pipe, at the moment, the lighter gas is separated from the mixed gas-liquid due to the rapid reduction of the flow rate, the gas continuously rises and is discharged through the first air outlet hole 20 and the second air outlet hole 9 of the pump body 1, the degassed liquid returns to the liquid storage chamber, enters the impeller 4 again through the return hole, is mixed with the gas sucked in through the suction pipeline inside the impeller 4, rotates the impeller 4 under the action of high pressure, then flows to the outer edge of the impeller 4, the pump can enter the normal operation state along with the repeated movement of the process until the gas is exhausted and the process is completed, the pump body 1 can not normally work through the arrangement of the adapter 5 and the annular adapter 18, and the exhaust rate of the pump body 1 is improved through the first air outlet hole 20 and the second air outlet hole 9.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Self-priming centrifugal pump shell, including the pump body (1), its characterized in that: the utility model discloses a pump body, including pump body (1), be equipped with fixed shell (2) on the pump body (1), the left side of fixed shell (2) is through first bolt (24) fixedly connected with adapter (5), the right side of adapter (5) rotates and is connected with impeller (4), rotate on adapter (5) and be connected with handle body (6), the left side fixedly connected with bearing shell (11) through fixing bolt (22) of adapter (5), fixedly connected with bearing (7) on bearing shell (11), fixedly connected with thrust ball bearing (8) on bearing shell (11), the outside of handle body (6) is with thrust ball bearing (8) and the inboard fixedly connected with of bearing (7), fixedly connected with carrier member (12) on bearing shell (11), fixedly connected with bearing locking nut (13) on bearing shell (11) are gone up fixedly connected with constant liquid level oil cup (14), fixedly connected with mechanical seal structure (15) on adapter (5), mechanical seal structure (15) are gone up fixedly connected with thrust ball bearing (8) and the inboard of bearing (7), be connected with on annular body (6) and the adapter (18), one side of adapter (18) is fixed with vent hole (18), the top of the bearing shell (11) is provided with a second exhaust hole (9).

2. The self-priming centrifugal pump housing of claim 1, wherein: the bottom of the bearing shell (11) is movably contacted with a supporting seat (10), and the supporting seat (10) is in threaded connection with the bearing shell (11) through a screw rod (23).

3. The self-priming centrifugal pump housing of claim 1, wherein: the bearing shell (11) is fixedly connected with a ring bearing carrier (19), and the ring bearing carrier (19) is fixedly connected with the handle body (6).

4. The self-priming centrifugal pump housing of claim 1, wherein: the right side of the fixed shell (2) is movably contacted with a locking washer (21).

5. The self-priming centrifugal pump housing of claim 1, wherein: the left side of the bearing shell (11) is fixedly connected with a shell (17).

6. The self-priming centrifugal pump housing of claim 2, wherein: the support seat (10) is provided with a threaded hole, and the threaded hole is in threaded connection with the screw rod (23).

7. The self-priming centrifugal pump housing of claim 1, wherein: the left side of fixed shell (2) fixedly connected with lid gasket (16) and gasket (3), lid gasket (16) and gasket (3) are through No. two bolt threaded connection with adapter (5).