CN219035097U

CN219035097U - Water pump shaft structure with super-strong torsion

Info

Publication number: CN219035097U
Application number: CN202223147657.XU
Authority: CN
Inventors: 张舟; 龚成; 张新元
Original assignee: Changshu Innovation Ceramic Co ltd
Current assignee: Changshu Innovation Ceramic Co ltd
Priority date: 2022-11-27
Filing date: 2022-11-27
Publication date: 2023-05-16
Anticipated expiration: 2032-11-27

Abstract

The utility model discloses a water pump shaft structure with super-strong torsion, which relates to the technical field of water pump shafts, and sequentially comprises a rotating shaft, a shaft sleeve and an assembly ring from inside to outside, wherein the rotating shaft is made of corrosion-resistant hard metal, the front end of the rotating shaft is spliced with the shaft sleeve, and the end face of the rotating shaft is flush with the end face of the same side of the shaft sleeve; the shaft sleeve is made of ceramic materials, the front end of the shaft sleeve is rotationally connected with the assembly ring, the end face of the shaft sleeve is flush with the end face of the same side of the assembly ring, and the rotating shaft and the shaft sleeve synchronously rotate relative to the assembly ring. The stainless steel rotating shaft has the advantages of strong corrosion resistance, large torque, difficult torsion fracture and the like, meanwhile, due to the design of the ceramic assembly ring and the shaft sleeve, the friction loss of the whole pump shaft structure is reduced, the maintenance and replacement cost of the pump shaft structure is effectively reduced, and the application range is wider compared with that of a pure ceramic structure.

Description

Water pump shaft structure with super-strong torsion

Technical Field

The utility model relates to the technical field of water pump shafts, in particular to a water pump shaft structure with super-strong torsion.

Background

The common water pump generally comprises a pump body, a stator, a rotor and an impeller, wherein the rotor is connected with the impeller through a pump shaft, the main function of the pump shaft of the water pump is to transmit torque input by an engine to the impeller and the fan, and provide energy required by work of the impeller and the fan, and the pump is required to bear bending moment and torque in the working process, so that the pump is also a kind of rotating shaft.

The pump shaft of the water pump that uses now is metal material or full ceramic material generally, and both have the advantage and disadvantage, and after the pump shaft structure live time of metal material had been prolonged, the friction that produces between assembly ring and the pivot can produce very big loss to pivot and assembly ring, consequently can influence the life of pump shaft structure, if adopt full ceramic structure, though can reduce the friction between pivot and the assembly ring owing to the smooth characteristic of pottery, can be because the fragile characteristic of pottery, the moment of torsion of ceramic pivot will be very little, rotates too soon and probably can lead to the ceramic pump shaft to be twisted off.

Therefore, improvement of the structure of the rotating shaft in the water pump is required based on the above-mentioned shortcomings.

Disclosure of Invention

The utility model aims to solve the problems, and designs a water pump shaft structure with super-strong torsion, which has the characteristics of small ceramic friction force and large steel shaft torque.

The technical scheme of the utility model for achieving the purpose is that the water pump shaft structure with the ultra-strong torsion comprises a rotating shaft, a shaft sleeve and an assembly ring from inside to outside, wherein the rotating shaft is made of corrosion-resistant hard metal, the front end of the rotating shaft is spliced with the shaft sleeve, and the end face of the rotating shaft is flush with the end face of the same side of the shaft sleeve;

the shaft sleeve and the assembly ring are both made of ceramic materials, wherein the front end of the shaft sleeve is rotationally connected with the assembly ring, and the end face of the shaft sleeve is flush with the end face of the same side of the assembly ring;

the outer annular surface of the rear end of the rotating shaft is provided with a first clamping groove, the outer annular surface of the rear end of the shaft sleeve is provided with a second clamping groove, and the plane of the first clamping groove is parallel to the plane of the second clamping groove;

the rotating shaft and the shaft sleeve are respectively clamped with the internal structure of the water pump through the first clamping groove and the second clamping groove, and the rotating shaft and the shaft sleeve synchronously rotate relative to the assembly ring.

Further, the outer diameter of the shaft sleeve is consistent with the inner diameter of the assembly ring, and the inner diameter of the shaft sleeve is consistent with the diameter of the rotating shaft.

Further, two second clamping grooves are formed in the shaft sleeve and are symmetrically distributed.

Further, a plurality of water passing grooves are formed in the end face of the assembly ring, and a stop chute is formed in the outer ring face of the assembly ring.

Further, the water passing grooves are distributed on the end face of the assembly ring in an annular array, and the end face of the assembly ring provided with the water passing grooves is flush with the end face of the shaft sleeve.

Further, the axial width of the sleeve is greater than the axial width of the mounting ring.

Further, the rotating shaft is processed by stainless steel.

Compared with the prior art, the beneficial effects are that:

according to the utility model, the stainless steel rotating shaft can drive the shaft sleeve to rotate together relative to the assembly ring when rotating, and the shaft sleeve and the assembly ring are made of ceramics, so that the friction force between the shaft sleeve and the assembly ring is very small, the shaft sleeve only needs to be replaced after being worn after the shaft sleeve is used for a long time, the rotating shaft is not required to be replaced, the maintenance and replacement cost of the rotating shaft structure is effectively reduced, and compared with the stainless steel rotating shaft with a pure ceramic structure, the stainless steel rotating shaft has the advantages of large torque, difficulty in torsion fracture and the like, and the application range is wider.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic view of the structure of the sleeve of the present utility model;

fig. 4 is a schematic view of the structure of the fitting ring in the present utility model.

In the figure, 1, a rotating shaft; 11. a first clamping groove; 2. a shaft sleeve; 21. a second clamping groove; 3. a mounting ring; 31. a water passing tank; 32. and a sliding stopping groove.

Detailed Description

The present utility model will be described in detail below with reference to the accompanying drawings, as shown in fig. 1 and 2, a water pump shaft structure with ultra-strong torque force sequentially comprises three parts, namely, a rotating shaft 1, a shaft sleeve 2 and an assembling ring 3 from inside to outside, wherein the shaft sleeve 2 and the assembling ring 3 are made of ceramic materials, the rotating shaft 1 is made of corrosion-resistant hard metal, in the embodiment, the rotating shaft 1 is preferably made of stainless steel (with high structural strength and corrosion resistance), the outer diameter of the shaft sleeve 2 is consistent with the inner diameter of the assembling ring 3, when the shaft sleeve 2 and the assembling ring 3 are rotatably connected, the shaft sleeve 2 and the assembling ring 3 can be perfectly matched, and because the shaft sleeve 2 and the assembling ring 3 are ceramic, the friction force between the shaft sleeve 2 and the assembling ring 3 can be very small when the shaft sleeve rotates relative to the assembling ring 3, and abrasion can be very small.

The front end of the rotating shaft 1 is used as a rotating component to be inserted into the shaft sleeve 2, the inner diameter of the shaft sleeve 2 is consistent with the diameter of the rotating shaft 1, so that the rotating shaft 1 and the shaft sleeve 2 can be perfectly matched, and the end surfaces of the rotating shaft 1, the shaft sleeve 2 and the assembly ring 3 are all flush during installation, and the friction force between the stainless steel rotating shaft 1 and the shaft sleeve 2 is larger than the friction force between the shaft sleeve 2 and the assembly ring 3, so that the rotating shaft 1 can drive the shaft sleeve 2 to rotate relative to the assembly ring 3 during rotation.

The outer ring surface of the rear end (namely, one end far away from the shaft sleeve 2) of the rotating shaft 1 is also provided with a first clamping groove 11 which is used for being clamped with a mechanical structure in a water pump, when the shaft sleeve 2 rotates inside the assembly ring 3, friction heat can be generated between the shaft sleeve 2 and the assembly ring 3, the use can be influenced due to overhigh temperature, as shown in fig. 4, the end surface of the assembly ring 3 is provided with a plurality of water passing grooves 31 distributed in an annular array, when the shaft sleeve 2 rotates, water flows into gaps between the shaft sleeve 2 and the assembly ring 3 to cool the shaft sleeve 2, when the shaft sleeve is installed, the end surface of the assembly ring 3 provided with the water passing groove 31 is outwards, the end surface of the shaft sleeve 2 is flush with the end surface of the assembly ring 3 where the water passing groove 31 is located, and the outer ring surface of the assembly ring 3 is also provided with a stop groove 32 which is used for fixing the assembly ring 3 to prevent the assembly ring 3 from rotating.

In practice, the axial width of the shaft sleeve 2 is greater than the axial width of the assembly ring 3, that is, when the shaft sleeve 2 is installed, one end of the shaft sleeve 2 extends to the outer side of the assembly ring 3, as shown in fig. 3, two second clamping grooves 21 which are symmetrically distributed are formed in the outer ring surface of the shaft sleeve 2, which is far away from one end (namely, the rear end) of the assembly ring 3, and when the shaft sleeve 2 is installed, the shaft sleeve 2 and the rotating shaft 1 are respectively clamped with the internal structure of the water pump through the second clamping grooves 21 and the first clamping grooves 11, so that the rotating shaft 1 can rotate together with the shaft sleeve 2 when rotating, if the service time of the shaft sleeve 2 is long, the inner side of the shaft sleeve 2 is worn, the shaft sleeve 2 can be replaced without replacing the whole pump shaft structure, and therefore the maintenance cost of the pump shaft can be reduced.

The above technical solution only represents the preferred technical solution of the present utility model, and some changes that may be made by those skilled in the art to some parts of the technical solution represent the principles of the present utility model, and the technical solution falls within the scope of the present utility model.

Claims

1. The water pump shaft structure with the ultra-strong torsion is characterized by sequentially comprising a rotating shaft (1), a shaft sleeve (2) and an assembly ring (3) from inside to outside, wherein the rotating shaft (1) is made of corrosion-resistant hard metal, the front end of the rotating shaft (1) is spliced with the shaft sleeve (2), and the end face of the rotating shaft (1) is level with the end face of the same side of the shaft sleeve (2);

the shaft sleeve (2) and the assembly ring (3) are made of ceramic materials, wherein the front end of the shaft sleeve (2) is rotationally connected with the assembly ring (3), and the end face of the shaft sleeve (2) is flush with the end face of the same side of the assembly ring (3);

a first clamping groove (11) is formed in the outer annular surface of the rear end of the rotating shaft (1), a second clamping groove (21) is formed in the outer annular surface of the rear end of the shaft sleeve (2), and the plane where the first clamping groove (11) is located is parallel to the plane where the second clamping groove (21) is located;

the rotating shaft (1) and the shaft sleeve (2) are respectively clamped with the internal structure of the water pump through the first clamping groove (11) and the second clamping groove (21), and the rotating shaft (1) and the shaft sleeve (2) synchronously rotate relative to the assembly ring (3).

2. A water pump shaft structure with ultra-strong torque according to claim 1, characterized in that the outer diameter of the shaft sleeve (2) is identical to the inner diameter of the fitting ring (3), and the inner diameter of the shaft sleeve (2) is identical to the diameter of the rotating shaft (1).

3. The water pump shaft structure with super-strong torsion according to claim 1, wherein two second clamping grooves (21) on the shaft sleeve (2) are symmetrically distributed.

4. The water pump shaft structure with the ultra-strong torsion according to claim 1, wherein a plurality of water passing grooves (31) are formed in the end face of the assembly ring (3), and a stop groove (32) is formed in the outer ring face of the assembly ring (3).

5. The water pump shaft structure with super-strong torsion according to claim 4, wherein a plurality of water passing grooves (31) are distributed on the end face of the assembly ring (3) in an annular array, and the end face of the assembly ring (3) provided with the water passing grooves (31) is flush with the end face of the shaft sleeve (2).

6. A water pump shaft structure with ultra-strong torque according to claim 1, characterized in that the axial width of the sleeve (2) is larger than the axial width of the fitting ring (3).

7. A water pump shaft structure with ultra-strong torsion according to claim 1, characterized in that the shaft (1) is machined from stainless steel.