CN213360542U

CN213360542U - Pump shaft of centrifugal pump

Info

Publication number: CN213360542U
Application number: CN202022181158.7U
Authority: CN
Inventors: 章子龙; 李梓逸
Original assignee: Haozhuo Pump Hangzhou Co ltd
Current assignee: Haozhuo Pump Hangzhou Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-06-04
Anticipated expiration: 2030-09-29

Abstract

The utility model relates to a centrifugal pump field especially relates to a centrifugal pump shaft, including the axostylus axostyle, the axostylus axostyle includes motor link and impeller link, and wherein the diameter of motor link is greater than the diameter of impeller link, motor link tip is provided with a fixed head, motor link surface still is provided with a plurality of recesses, impeller link surface is smooth-going, and its front end tip is provided with a connect the via hole. The utility model overcomes the fixed effect of centrifugal pump shaft among the prior art is relatively poor, leads to the lower defect of power transmission efficiency, the utility model discloses a motor link surface is provided with a plurality of recesses, and it can be used for with the shaft coupling joint to effectively prevent to be not hard up and then influence the transmission effect rotating the in-process, consequently the utility model provides a pump shaft can have good power transmission effect at the operation in-process.

Description

Pump shaft of centrifugal pump

Technical Field

The utility model relates to a centrifugal pump field especially relates to a centrifugal pump shaft.

Background

The centrifugal pump mainly transmits power to support the impeller to keep working position and normal operation. One end of the impeller is connected with a motor shaft through a coupling, the other end of the impeller supports the impeller to rotate, and the shaft is provided with parts such as a bearing, an axial seal and the like. The pump shaft of the existing centrifugal pump is usually a smooth straight rod, and the pump shaft is usually fixed, has poor power transmission effect and is not beneficial to the effective work of the centrifugal pump.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an it is relatively poor to overcome the fixed effect of centrifugal pump shaft among the prior art, leads to the lower defect of power transmission efficiency, provides a centrifugal pump shaft with good power transmission effect.

In order to realize the purpose of the utility model, the utility model discloses a following technical scheme realizes:

the utility model provides a centrifugal pump shaft, includes the axostylus axostyle, the axostylus axostyle includes motor link and impeller link, and wherein the diameter of motor link is greater than the diameter of impeller link, motor link tip is provided with a fixed head, motor link surface still is provided with a plurality of recesses, impeller link surface is smooth-going, and its front end tip is provided with a connect the via hole.

The utility model provides a centrifugal pump shaft its and traditional pump shaft structure difference lies in: the utility model provides a pump shaft does not constitute by the long straight pole of smooth homogeneous, but adopts the structure of two segmentations, and motor connecting end surface wherein is provided with a plurality of recesses, and it can be used for with the shaft coupling joint to effectively prevent to rotate the in-process not hard up and then influence the transmission effect, consequently the utility model provides a pump shaft can have good power transmission effect at the operation in-process.

Preferably, a connection transition section inclined by 45 degrees is arranged at the connection position of the motor connection end and the impeller connection end.

Preferably, the two sides of the groove are provided with bevel edges.

Because the recess can receive great stress at fixed in-process both sides inner wall, both sides are vertical limit then can wear and tear gradually under the effect of stress, lead to can become flexible gradually in the use to the transmission effect variation, consequently set up the hypotenuse with the recess both sides and can effectively overcome the stress when fixed, guaranteed can not wear and tear not hard up in the use, guaranteed transmission efficiency.

Preferably, the number of the grooves is 3.

Preferably, the fixing head is substantially rectangular and has an arc-shaped end portion.

Preferably, the connection part of the fixed head and the motor connecting end is in circular arc transition.

Therefore, the utility model discloses following beneficial effect has: can be stably connected with a coupler of the motor, thereby having good power transmission effect.

Drawings

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

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

Fig. 3 is an enlarged view of fig. 1 at b.

Fig. 4 is a cross-sectional view taken along the direction c-c in fig. 1.

Wherein: axostylus axostyle 1, motor link 2, impeller link 3, fixed head 4, recess 5, connect through-hole 6, connect changeover portion 7, hypotenuse 8.

Detailed Description

The invention is further described with reference to the drawings and the specific embodiments. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Moreover, the embodiments of the invention described in the following description are generally only some embodiments, but not all embodiments, of the invention. Therefore, all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1-4, a centrifugal pump shaft comprises a shaft rod 1, wherein the shaft rod 1 comprises a motor connecting end 2 and an impeller connecting end 3, the diameter of the motor connecting end 2 is larger than that of the impeller connecting end 3, and a connecting transition section 7 inclined by 45 degrees is arranged at the joint of the motor connecting end 2 and the impeller connecting end 3. The end part of the motor connecting end 2 is provided with a fixed head 4, the fixed head 4 is approximately a cuboid, the end part of the fixed head is arc-shaped, and the arc transition of the joint of the fixed head 4 and the motor connecting end 2 is realized. The surface of the motor connecting end 2 is also provided with 3 grooves 5, the two sides of each groove 5 are provided with bevel edges 8 used for relieving stress action, the surface of the impeller connecting end 3 is smooth, and the front end part of the impeller connecting end is provided with a connecting through hole 6.

The utility model provides a pump shaft does not constitute by the long straight pole of smooth homogeneous, but adopts the structure of two segmentations, and motor connecting end surface wherein is provided with a plurality of recesses, and it can be used for with the shaft coupling joint to effectively prevent to rotate the in-process not hard up and then influence the transmission effect, consequently the utility model provides a pump shaft can have good power transmission effect at the operation in-process.

Simultaneously because the recess can receive great stress at fixed in-process both sides inner wall, both sides are vertical limit then can wear and tear gradually under the effect of stress, lead to can become flexible gradually in the use to the transmission effect variation, consequently set up the hypotenuse with the recess both sides and can effectively overcome the stress when fixed, guaranteed can not wear and tear not hard up in the use, guaranteed transmission efficiency.

Claims

1. The utility model provides a centrifugal pump shaft, its characterized in that, includes axostylus axostyle (1), axostylus axostyle (1) includes motor link (2) and impeller link (3), and wherein the diameter of motor link (2) is greater than the diameter of impeller link (3), motor link (2) tip is provided with one fixed head (4), motor link (2) surface still is provided with a plurality of recesses (5), impeller link (3) surface is smooth and smooth-going, and its front end tip is provided with one connect the via hole (6).

2. Centrifugal pump shaft according to claim 1, characterized in that the connection of the motor connection end (2) and the impeller connection end (3) is provided with a connection transition section (7) that is inclined at 45 °.

3. Centrifugal pump shaft according to claim 1, characterized in that the groove (5) is provided with bevelled edges (8) on both sides.

4. A centrifugal pump shaft according to claim 1 or 3, characterized in that the number of grooves (5) is 3.

5. Centrifugal pump shaft according to claim 1, characterized in that the fixing head (4) is approximately rectangular and has an arc-shaped end.

6. The centrifugal pump shaft according to claim 1 or 5, characterized in that the junction of the fixed head (4) and the motor connection end (2) is in a circular arc transition.