CN216894920U

CN216894920U - Novel vertical multistage centrifugal pump device

Info

Publication number: CN216894920U
Application number: CN202220459138.8U
Authority: CN
Inventors: 林志强; 郑永镇
Original assignee: GUANGDONG SHUNDA MARINE ENGINEERING CO LTD
Current assignee: GUANGDONG SHUNDA MARINE ENGINEERING CO LTD
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-07-05
Anticipated expiration: 2032-03-04

Abstract

The utility model discloses a novel vertical multistage centrifugal pump device relating to the technical field of centrifugal pumps, which comprises a main body and a main shaft arranged in the main body, wherein a shaft sleeve is also arranged between the main shaft and the inner wall of the main body, the shaft sleeve is sleeved on the main shaft and comprises a first shaft sleeve and a second shaft sleeve, an annular groove is formed in the inner wall of the main body, a convex ring matched with the groove is arranged on the first shaft sleeve, an extrusion ring is also arranged on the inner wall of the main body, the extrusion ring is arranged above the convex ring, and the extrusion ring is abutted against the convex ring.

Description

Novel vertical multistage centrifugal pump device

Technical Field

The utility model relates to the technical field of centrifugal pumps, in particular to a novel vertical multistage centrifugal pump device.

Background

With the progress of times and the development of science and technology, the vertical multi-stage centrifugal pump greatly facilitates the industrial production of people, and the working principle of the centrifugal pump is mainly that the centrifugal force generated by the rotation of an impeller is utilized to carry out subsequent actions.

The existing vertical multi-stage centrifugal pump still has certain structural defects, thereby affecting the performance of the whole centrifugal pump, such as: the main shaft of the pump body and the leakproofness between the pump body are relatively poor, and the seal structure and the sealing means that set up between the two are comparatively simple and single, take place easily after using a period of time and leak, the main shaft is soaked in the circumstances of aquatic, can take place the direct circumstances with the main shaft contact of corrosive medium even, cause the damage to the structure of main shaft, influence centrifugal pump job stabilization nature, receive external factor's interference easily.

Therefore, a solution is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel vertical multistage centrifugal pump device, which effectively improves the integral waterproof sealing performance and is beneficial to prolonging the service life.

In order to achieve the purpose, the technical scheme of the utility model comprises the following steps:

the utility model provides a novel vertical multistage centrifugal pump device, is in including main part and setting main shaft in the main part, the main shaft with still be provided with the axle sleeve between the inner wall of main part, the axle sleeve cover is established on the main shaft, the axle sleeve includes first axle sleeve and second axle sleeve, be provided with annular recess on the main part inner wall, the first axle is sheathe in be provided with the bulge loop of recess phase-match installation, still be provided with the extrusion ring on the main part inner wall, the extrusion ring sets up the top of bulge loop, the extrusion ring with the bulge loop offsets and leans on the setting.

Furthermore, the second shaft sleeve is provided with a plurality of, and is a plurality of the mutual interval setting between the second shaft sleeve, and is a plurality of the second shaft sleeve all sets up the below of first axle sleeve.

Further, the shaft sleeve is mounted on the main shaft through a flat key.

Furthermore, a reinforcing ring is further arranged above the extrusion ring, and the reinforcing ring is sleeved on the first shaft sleeve.

Further, the tail end of the main shaft is also provided with a third shaft sleeve.

Further, the first shaft sleeve comprises a first section and a second section, the first section and the second section are connected with each other through the convex ring, and the outer diameter of the first section is smaller than that of the second section.

Furthermore, the first section, the second section and the convex ring are integrally formed.

The novel vertical multistage centrifugal pump device has the beneficial effects that: through set up first axle sleeve and second axle sleeve between the inner wall of main shaft and main part, the setting of bulge loop and extrusion ring is gone up in the reassembling, can effectively improve the waterproof performance of main shaft to make the centrifugal pump at the during operation more stable, moreover, when promoting main shaft waterproof performance, can avoid corroding the contact between medium and the main shaft, effectively improve the life of centrifugal pump.

Drawings

FIG. 1 is a schematic view of the internal structure of a novel vertical multistage centrifugal pump device;

FIG. 2 is a view showing a structure at A in FIG. 1;

fig. 3 is a structural view at B in fig. 1.

Detailed Description

The utility model discloses a novel vertical multistage centrifugal pump device, which is described by combining the accompanying drawings.

As shown in fig. 1 to 3, as a preferred embodiment of the present invention:

the utility model provides a novel vertical multistage centrifugal pump device, is in including main part 1 and setting main shaft 2 in the main part 1, main shaft 2 with still be provided with the axle sleeve between the inner wall of main part 1, the axle sleeve cover is established on main shaft 2, the axle sleeve includes primary shaft cover 3 and secondary shaft cover 4, be provided with annular recess 5 on the 1 inner wall of main part, be provided with on the primary shaft cover 3 with the bulge loop 6 of 5 phase-match installations of recess, still be provided with extrusion ring 7 on the 1 inner wall of main part, extrusion ring 7 sets up the top of bulge loop 6, extrusion ring 7 with bulge loop 6 offsets and leans on the setting.

Preferably, the sleeve is mounted on the main shaft 2 by providing a flat key 8.

The second shaft sleeves 4 are arranged in a plurality of numbers, the second shaft sleeves 4 are arranged at intervals, and the second shaft sleeves 4 are arranged below the first shaft sleeve 3.

Preferably, the second bushing 4 is provided in three.

In order to improve the tightness between the first shaft sleeve 3 and the main shaft 2 and further improve the sealing effect on the main shaft 2, a reinforcing ring 9 is further arranged above the extrusion ring 7, and the reinforcing ring 9 is sleeved on the first shaft sleeve 3.

In order to further improve the sealing effect on the main shaft 2 and improve the waterproof performance of the main shaft 2, a third shaft sleeve 10 is further arranged at the tail end of the main shaft 2.

The first shaft sleeve 3 comprises a first section 11 and a second section 12, the first section 11 and the second section 12 are connected with each other through the convex ring 6, and the outer diameter of the first section 11 is smaller than that of the second section 12. The position of the first section 11 is close to the motor part of the main body, so that a shaft sleeve with a smaller outer diameter is required to be arranged at the position, the shaft sleeve at the position is matched with the main shaft 2 more tightly, and the working stability of the main shaft 2 is improved.

In order to improve the structural strength among the first section 11, the second section 12 and the convex ring 6 and prolong the service life of the first shaft sleeve 3, the first section 11, the second section 12 and the convex ring 6 are integrally formed.

The novel vertical multistage centrifugal pump device has the beneficial effects that: through set up first axle sleeve 3 and second axle sleeve 4 between the inner wall at main shaft 2 and main part 1, collocation epirelief ring 6 and extrusion ring 7's setting again can effectively improve main shaft 2 waterproof performance to make the centrifugal pump at the during operation more stable, moreover, when promoting main shaft 2 waterproof performance, can avoid corroding the contact between medium and the main shaft 2, effectively improve the life of centrifugal pump.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. The utility model provides a novel vertical multistage centrifugal pump device, is in including main part and setting main shaft in the main part, a serial communication port, the main shaft with still be provided with the axle sleeve between the inner wall of main part, the axle sleeve cover is established on the main shaft, the axle sleeve includes first axle sleeve and second axle sleeve, be provided with annular recess on the main part inner wall, be provided with on the first axle sleeve with the bulge loop of recess phase-match installation, still be provided with the extrusion ring on the main part inner wall, the extrusion ring sets up the top of bulge loop, the extrusion ring with the bulge loop offsets and leans on the setting.

2. The novel vertical multistage centrifugal pump device as claimed in claim 1, wherein the second shaft sleeve is provided in plurality, the second shaft sleeves are arranged at intervals, and the second shaft sleeves are all arranged below the first shaft sleeve.

3. The novel vertical multistage centrifugal pump apparatus of claim 1, wherein said shaft sleeve is mounted on said main shaft by providing a flat key.

4. The novel vertical multistage centrifugal pump device as claimed in claim 1, wherein a reinforcing ring is further arranged above the extrusion ring, and the reinforcing ring is sleeved on the first shaft sleeve.

5. The novel vertical multistage centrifugal pump apparatus of claim 1, wherein a third bushing is further provided at the end of said main shaft.

6. The novel vertical multistage centrifugal pump apparatus of claim 1, wherein said first hub comprises a first section and a second section, said first and second sections being interconnected by said torus, said first section having an outer diameter smaller than an outer diameter of said second section.

7. The novel vertical multistage centrifugal pump apparatus of claim 6, wherein said first section, second section and said torus are integrally formed therebetween.