CN211009158U

CN211009158U - Mechanical seal heat radiation structure in pump head of deep-well pump

Info

Publication number: CN211009158U
Application number: CN201921990164.8U
Authority: CN
Inventors: 赵福增
Original assignee: Zhejiang Qiantao Pump Co ltd
Current assignee: Zhejiang Qiantao Pump Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-07-14
Anticipated expiration: 2029-11-18

Abstract

The utility model provides a mechanical seal heat radiation structure in deep-well pump head belongs to fluid machinery technical field. The problem that an existing sealing structure with a limited mechanical sealing cooling effect is often damaged due to overhigh temperature is solved. This mechanical seal heat radiation structure in deep-well pump head, include the pump case and set up the motor in the pump case, the top of pump case has linked firmly the mount pad of sealed pump case internal reaction, the transmission shaft of motor passes the mount pad and overlaps and be equipped with the axle sleeve, the externally mounted of axle sleeve has mechanical seal, the top of mount pad is provided with the end cover, between the lower part of mount pad and the axle sleeve on clearance fit and the inner wall of mount pad vertically set up with the runner of the inside intercommunication of pump case, set up a plurality of and the exit of inner wall intercommunication on the lateral wall of mount pad. The utility model discloses a improve the pump head and help promoting holistic sealed effect and radiating effect's advantage.

Description

Mechanical seal heat radiation structure in pump head of deep-well pump

Technical Field

The utility model belongs to the technical field of fluid machinery, a deep-well pump is related to, in particular to mechanical seal heat radiation structure in deep-well pump head.

Background

The deep well pump is one of water pumps, the biggest characteristic of the deep well pump is to make the motor and the pump into a whole, it is a pump which is immersed in the underground water well to suck and transport water, it is a water lifting machine that the motor and the water pump directly connect and dive into the water to work, widely used in farmland drainage and irrigation, industrial and mining enterprises, city water supply and drainage and sewage treatment, etc., the transmission type of the deep well pump is shaft drive, therefore need to install mechanical seal on the pump shaft for the seal of the gap on the shaft, because the mechanical seal realizes the seal through grinding between the moving and static rings, therefore need to carry on an effective heat dissipation to the mechanical seal in order to protect the seal face between the moving and static rings and lengthen the life, and the heat dissipation of the mechanical seal at present is to carry on the heat dissipation through the entering of the external transport liquid of pump head, the limited seal structure of the cooling effect often damages.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a mechanical seal heat radiation structure in the deep-well pump, improve the pump head and help promoting holistic sealed effect and radiating effect.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a mechanical seal heat radiation structure in deep-well pump head, includes the pump case and sets up the motor in the pump case, the top of pump case links firmly the mount pad of sealed pump case internal reaction, the transmission shaft of motor passes the mount pad and the cover is equipped with the axle sleeve, a serial communication port, the externally mounted of axle sleeve has mechanical seal, and the top of mount pad is provided with the end cover, vertically set up the runner with the inside intercommunication of pump case on the inner wall of clearance fit and mount pad between the lower part of mount pad and the axle sleeve, set up a plurality of imports and exports with the inner wall intercommunication on the lateral wall of mount pad.

The mechanical seal heat radiation structure has the technical effects that: for traditional mechanical seal only dispel the heat through outside fluid this, the utility model discloses set up a plurality of runners that communicate with the pump case is inside in mount pad department, because the inside cooling machine oil that has filled into of pump case, machine oil realizes better heat dissipation with the mechanical seal contact in getting into the mount pad through this runner, end cover seal is passed through to the top of mount pad, in order to realize this effect, a bearing frame for fixing this department's motor shaft tip has the through-hole, wherein make the circulation of machine oil more smooth be convenient for flow back in inside, set up a plurality of exits on the mount pad, flow area has been increased in other words, the cooling effect is better.

In the mechanical seal heat dissipation structure in the deep-well pump head, a seal block is arranged between the end cover and the shaft sleeve, and the outside of the seal block and the end cover are sealed through a seal ring.

In the mechanical seal heat dissipation structure in the deep-well pump head, a cylindrical cavity structure which is evenly spaced and matched in position is radially arranged between the end cover and the seal block, and a pin shaft is arranged in the cavity structure in an interference fit manner.

In the mechanical seal heat dissipation structure in the deep-well pump head, the end cover is fixed with the mounting seat through a plurality of screws which are vertically penetrated.

Compared with the prior art, the mechanical seal heat radiation structure in the pump head of the deep-well pump has the advantages that the mechanical seal can be contacted by engine oil in the pump shell by arranging the plurality of flow passages and the inlet and the outlet on the mounting seat, the heat radiation of the mechanical seal is further increased by the circulation flow in the engine oil, and the service life of the mechanical seal heat radiation structure can be effectively prolonged.

Drawings

FIG. 1 is a cross-sectional view of the present deep well pump head construction.

In the drawings, 1, a pump casing; 2. a motor; 3. a mounting seat; 4. a shaft sleeve; 5. mechanical sealing; 6. an end cap; 7. a flow channel; 8. an inlet and an outlet; 9. a sealing block; 10. a seal ring; 11. a pin shaft; 12. and (4) screws.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, this mechanical seal heat radiation structure in deep-well pump head, including pump case 1 with set up the motor 2 in pump case 1, the top of pump case 1 has linked firmly the mount pad 3 of 1 internal action of sealed pump case, the transmission shaft of motor 2 passes mount pad 3 and the cover is equipped with axle sleeve 4, the externally mounted of axle sleeve 4 has mechanical seal 5, the top of mount pad 3 is provided with end cover 6, vertically set up the runner 7 with the inside intercommunication of pump case 1 on clearance fit and the inner wall of mount pad 3 between the lower part of mount pad 3 and axle sleeve 4, set up a plurality of exit 8 with the inner wall intercommunication on the lateral wall of mount pad 3.

In more detail, a sealing block 9 is arranged between the end cover 6 and the shaft sleeve 4, the outside of the sealing block 9 is sealed with the end cover 6 through a sealing ring 10, the sealing block 9 plays a certain role in supporting and fixing the mechanical seal 5, and the sealing performance of the gap at the position can be improved through the sealing block 9.

Further, radially set up the even and position matched with cylindrical cavity structure in interval between end cover 6 and the sealed piece 9 to there is round pin axle 11 in the inside interference fit of cavity structure, the design of this structure makes sealed piece 9 fixed more convenient, aligns through the cavity structure each other in sealed piece 9 embedding end cover 6 back and directly sets up round pin axle 11 again and alright make sealed piece 9 and end cover 6 form the fastening effect.

Further, the end cover 6 is fixed with the mounting base 3 through vertically penetrating a plurality of screws 12, the screws 12 are located above the end cover 6 and are convenient to screw, and the positions of the screws are circumferentially and uniformly distributed.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms pump housing 1, motor 2, mounting base 3, shaft sleeve 4, mechanical seal 5, end cap 6, flow channel 7, port 8, seal block 9, seal ring 10, pin 11, screw 12, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a mechanical seal heat radiation structure in deep-well pump head, includes pump case (1) and sets up motor (2) in pump case (1), the top of pump case (1) has linked firmly mount pad (3) of sealed pump case (1) internal reaction, the transmission shaft of motor (2) passes mount pad (3) and the cover is equipped with axle sleeve (4), its characterized in that, the externally mounted of axle sleeve (4) has mechanical seal (5), and the top of mount pad (3) is provided with end cover (6), vertically on the inner wall of clearance fit and mount pad (3) between the lower part of mount pad (3) and axle sleeve (4) set up runner (7) with the inside intercommunication of pump case (1), set up exit (8) a plurality of and inner wall intercommunication on the lateral wall of mount pad (3).

2. A mechanical seal heat dissipation structure in a pump head of a deep-well pump according to claim 1, wherein a sealing block (9) is disposed between the end cap (6) and the shaft sleeve (4), and the sealing ring (10) is used for sealing between the outside of the sealing block (9) and the end cap (6).

3. The mechanical seal heat dissipation structure in the pump head of the deep-well pump according to claim 2, wherein a cylindrical cavity structure with uniform spacing and matched position is radially arranged between the end cover (6) and the seal block (9), and a pin shaft (11) is in interference fit in the cavity structure.

4. The mechanical seal heat dissipation structure in a pump head of a deep-well pump according to claim 1, wherein the end cap (6) is fixed to the mounting base (3) by vertically penetrating a plurality of screws (12).