CN211343455U

CN211343455U - High-strength centrifugal water pump shaft

Info

Publication number: CN211343455U
Application number: CN201922294835.3U
Authority: CN
Inventors: 刘京国
Original assignee: Lincheng North Metal Surface Treatment Co ltd
Current assignee: Lincheng North Metal Surface Treatment Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-08-25
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a high-strength centrifugal water pump shaft, belonging to the technical field of water pump shaft manufacturing, comprising a first shaft body, a second shaft body and a third shaft body, wherein the left and right ends of the first shaft body are provided with the second shaft body; the opposite end of the second shaft body is fixedly connected with the left end and the right end of the first shaft body, and the end of the second shaft body, which deviates from each other, is provided with a third shaft body; a first limiting block is arranged at the right end of the third shaft body, and a first connecting head is arranged at the right end of the first limiting block; the left end of the third shaft body is provided with a second limiting block, and the left end of the second limiting block is provided with a second connector. The utility model discloses set up first axis body, the second shaft body and the third axis body that 40 chromium steel was made, makeed the utility model discloses an intensity is higher to plated metallic chromium on first axis body, the second shaft body and third axis body, make the utility model discloses a surface hardness is big, has stand wear and tear, corrosion-resistant performance, long service life.

Description

High-strength centrifugal water pump shaft

Technical Field

The utility model belongs to the technical field of the manufacturing of water pump axle, specifically a centrifugal water pump axle of high strength.

Background

The centrifugal water pump is a vane pump, liquid is thrown upwards by adopting vanes rotating at a high speed, and a vacuum environment is formed to suck the liquid below the vanes, so that the aim of continuously conveying the liquid upwards is fulfilled. The important operation part in the centrifugal water pump is a blade, the blade needs to be driven by a water pump shaft, and the currently used water pump shaft has certain defects in the actual use process.

The water pump shaft is arranged underwater for a long time, and under the washing of high-speed water flow, cavitation is easily formed on the surface of the shaft body, the stability of the water pump shaft is affected, and the service life of the water pump shaft is shortened. In addition, because the water pump shaft is under a large load in the using process, wherein the impact load has the greatest influence on the service life of the water pump shaft, in the prior art, the water pump shaft is rigidly mounted, and the impact load is lack of a buffer effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a centrifugal water pump shaft of high strength to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a high-strength centrifugal water pump shaft comprises a first shaft body, a second shaft body and a third shaft body, wherein the second shaft body is arranged at the left end and the right end of the first shaft body; the opposite end of the second shaft body is fixedly connected with the left end and the right end of the first shaft body, a third shaft body is arranged at the end of the second shaft body, which is far away from the second shaft body, the upper surface of the third shaft body is provided with an end surface groove, and the end surface groove is provided with a key groove; a first limiting block is arranged at the right end of the third shaft body, the left end of the first limiting block is fixedly connected with the right end of the third shaft body on the right side, and a first connecting head is arranged at the right end of the first limiting block; the left end of the third shaft body is provided with a second limiting block, the right end of the second limiting block is fixedly connected with the left end of the third shaft body located on the left side, and the left end of the second limiting block is provided with a second connector.

As a further aspect of the present invention: the diameter of the second shaft body is smaller than that of the first shaft body, and the diameter of the third shaft body is smaller than that of the second shaft body.

As a further aspect of the present invention: the edge at both ends all sets up to the chamfer about the first axis body, and chamfer length is 2mm, and the edge at both ends sets up to the chamfer about the second axis body, and the length of chamfer is 2mm, sets up the fillet in the edge of first axis body and second axis body hookup location, and the radius of fillet is 3 mm.

As a further aspect of the present invention: the first connecting head is of a cylindrical structure, threads are arranged on the first connecting head, a first connecting sleeve is sleeved on the first connecting head, and the first connecting head is connected with the first connecting sleeve through the threads.

As a further aspect of the present invention: the second connector is of a rectangular structure, and a second connecting sleeve is sleeved on the second connector.

As a further aspect of the present invention: the first shaft body, the second shaft body and the third shaft body are all made of 40 chromium steel, a layer of wear-resistant film is plated on the first shaft body, the second shaft body and the third shaft body, the thickness of the wear-resistant film is set to be 0.3-0.5mm, and the wear-resistant film is made of metal chromium.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model is provided with the first shaft body, the second shaft body and the third shaft body which are made of 40 chromium steel, so that the strength of the utility model is higher, and the first shaft body, the second shaft body and the third shaft body are plated with chromium metal, so that the surface hardness of the utility model is large, and the utility model has the performances of wear resistance, corrosion resistance and long service life; the utility model discloses set up first adapter sleeve of first connector and complex with it to set up second connector and complex second adapter sleeve with it, makeed first axis body, second axis body and third axis body move about in operation process, can be small, make the utility model discloses certain buffering surplus has, makes the utility model discloses the impact load who receives in the in-service use process is less, can improve the utility model discloses a life.

Drawings

FIG. 1 is a top view of a high strength centrifugal water pump shaft in a three-dimensional configuration.

Fig. 2 is a perspective bottom view of a high strength centrifugal water pump shaft.

FIG. 3 is a front view partially in section of a high strength centrifugal water pump shaft.

FIG. 4 is a schematic view of the location of a wear resistant film in a high strength centrifugal water pump shaft.

In the figure: 1. a first shaft body; 2. a second shaft body; 3. a third shaft body; 4. an end face groove; 5. a keyway; 6. a first stopper; 7. a first connector; 8. a first connecting sleeve; 9. a second limiting block; 10. a second connector; 11. a second connecting sleeve; 12. an abrasion resistant film.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Please refer to fig. 1-4, a high-strength centrifugal water pump shaft includes a first shaft body 1, a second shaft body 2 and a third shaft body 3, wherein the second shaft body 2 is disposed at both ends of the first shaft body 1, the diameter of the second shaft body 2 is smaller than that of the first shaft body 1, the edges of both ends of the first shaft body 1 are chamfers, the chamfers have a length of 2mm, the edges of both ends of the second shaft body 2 are chamfers, the chamfers have a length of 2mm, a fillet is disposed at the edge of the connection position of the first shaft body 1 and the second shaft body 2, the radius of the fillet is 3mm, the second shaft body 2 is used for sleeving a bearing, and the shaft shoulder portion of the first shaft body 1 protruding from the second shaft body 2 can be used as a retainer ring of the bearing.

Both ends fixed connection about 2 opposite ends of second axle body and the first axle body 1, the one end that the second axle body 2 deviates from each other is equipped with third axle body 3, the diameter of third axle body 3 is less than the diameter of second axle body 2, end face groove 4 has been seted up at the upper surface of third axle body 3, end face groove 4 makes the upper surface of third axle body 3 become the horizontal plane by the face of cylinder, keyway 5 has been seted up on end face groove 4, installation drive mechanism is established to third axle body 3 is used for the cover, through installing the drive key in to keyway 5, make the third axle body 3 drive mechanism rotate.

A first limiting block 6 is arranged at the right end of the third shaft body 3, the left end of the first limiting block 6 is fixedly connected with the right end of the third shaft body 3 on the right side, a first connecting head 7 is arranged at the right end of the first limiting block 6, the first connecting head 7 is of a cylindrical structure, threads are arranged on the first connecting head 7, a first connecting sleeve 8 is sleeved on the first connecting head 7, the first connecting head 7 is connected with the first connecting sleeve 8 through the threads, and the first limiting block 6 prevents the first connecting sleeve 8 from being sleeved too deeply, so that the first connecting sleeve 8 and the third shaft body 3 are separated by a certain distance; the left end of third axis body 3 is equipped with

second stopper

9, and 9 right-hand members of second stopper and the left end fixed connection who is located left third axis body 3, the left end of second stopper 9 are equipped with second connector 10, and second connector 10 is the rectangle structure, and the cover is equipped with second adapter sleeve 11 on second connector 10, and the setting up of second stopper 9 makes the cover that has prevented second adapter sleeve 11 establish the length too deeply for second adapter sleeve 11 and a section distance of third axis body 3 interval.

The first shaft body 1, the second shaft body 2 and the third shaft body 3 are all made of 40 chromium steel, a layer of wear-resistant film 12 is plated on the first shaft body 1, the second shaft body 2 and the third shaft body 3, the thickness of the wear-resistant film 12 is set to be 0.3-0.5mm, and the wear-resistant film 12 is made of metal chromium.

The utility model discloses in the installation, earlier establish the bearing at two second shaft body 2 shanks, turn into the flat key of transmission again to the keyway adversion, pass through the first adapter sleeve 8 of screw thread screw in with first connector 7 afterwards, insert second adapter sleeve 11 with second connector 10 again, fix the position of first adapter sleeve 8 and second adapter sleeve 11, it is right to accomplish the utility model discloses an installation.

In the use process of the utility model, the bearing on the second shaft body 2 can support the rotation of the utility model, and the transmission key of the key groove 5 on the third shaft body 3 can transmit the torque to the transmission mechanism; in the process of rotating, the utility model discloses a first adapter sleeve 8 and second adapter sleeve 11 can be connected on the pump body, and first adapter sleeve 8 and second adapter sleeve 11 can be along with the utility model discloses rotate in step, because first adapter sleeve 7 and first adapter sleeve 8 are threaded connection, when first adapter sleeve 7 and first adapter sleeve 8 rotate in step, the rotating of small size can appear in the threaded connection of first adapter sleeve 7 and first adapter sleeve 8, because the distance between first adapter sleeve 8 and the second adapter sleeve 11 is fixed, first adapter sleeve 8 and second adapter sleeve 11 can restrict moving about first adapter sleeve 7 for first adapter sleeve 7 can remove about the small size.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A high-strength centrifugal water pump shaft comprises a first shaft body (1), a second shaft body (2) and a third shaft body (3), and is characterized in that the second shaft body (2) is arranged at the left end and the right end of the first shaft body (1); one opposite end of the second shaft body (2) is fixedly connected with the left end and the right end of the first shaft body (1), a third shaft body (3) is arranged at one end of the second shaft body (2) which is deviated from the first shaft body, an end surface groove (4) is formed in the upper surface of the third shaft body (3), and a key groove (5) is formed in the end surface groove (4); a first limiting block (6) is arranged at the right end of the third shaft body (3), the left end of the first limiting block (6) is fixedly connected with the right end of the third shaft body (3) on the right side, and a first connecting joint (7) is arranged at the right end of the first limiting block (6); the left end of the third shaft body (3) is provided with a second limiting block (9), the right end of the second limiting block (9) is fixedly connected with the left end of the third shaft body (3) located on the left side, and the left end of the second limiting block (9) is provided with a second connector (10).

2. A high-strength centrifugal water pump shaft according to claim 1, characterised in that the diameter of the second shaft body (2) is smaller than the diameter of the first shaft body (1), and the diameter of the third shaft body (3) is smaller than the diameter of the second shaft body (2).

3. The high-strength centrifugal water pump shaft according to claim 1, wherein the edges of the left and right ends of the first shaft body (1) are both provided with chamfers, the chamfers are 2mm in length, the edges of the left and right ends of the second shaft body (2) are provided with chamfers, the chamfers are 2mm in length, a fillet is arranged at the edge of the connecting position of the first shaft body (1) and the second shaft body (2), and the radius of the fillet is 3 mm.

4. The high-strength centrifugal water pump shaft according to claim 1, characterized in that the first connection head (7) is of a cylindrical structure, a thread is provided on the first connection head (7), a first connection sleeve (8) is sleeved on the first connection head (7), and the first connection head (7) is connected with the first connection sleeve (8) through the thread.

5. The high-strength centrifugal water pump shaft according to claim 1, wherein the second connector (10) is of a rectangular structure, and a second connecting sleeve (11) is sleeved on the second connector (10).

6. A high-strength centrifugal water pump shaft according to claim 1, characterized in that the first shaft body (1), the second shaft body (2) and the third shaft body (3) are all made of 40 chromium steel, and a wear-resistant film (12) is plated on the first shaft body (1), the second shaft body (2) and the third shaft body (3), the thickness of the wear-resistant film (12) is set to be 0.3-0.5mm, and the wear-resistant film (12) is made of chromium metal.