CN209838747U

CN209838747U - Axial positioning structure of pump shaft of impeller pump

Info

Publication number: CN209838747U
Application number: CN201920146935.9U
Authority: CN
Inventors: 徐礼记; 向锐; 刘宇; 李小飞
Original assignee: Sanlian Pump Industry Co Ltd
Current assignee: Sanlian Pump Industry Co Ltd
Priority date: 2019-01-25
Filing date: 2019-01-25
Publication date: 2019-12-24
Anticipated expiration: 2029-01-25

Abstract

The utility model provides a vane pump shaft axial positioning structure, relates to vane pump and makes the field, vane pump includes the pump shaft to and have the pump body in impeller cavity, lubrication chamber, positioning structure includes: two extrusion springs are arranged and are respectively sleeved on the outer ring side of the pump shaft in a sleeving manner; the ring sleeve is arranged on the pump shaft, and the two extrusion springs are respectively arranged on two sides of the limit ring; the other ends of the two groups of extrusion springs are respectively connected with inner ring rings of a first bearing and a second bearing, the first bearing and the second bearing are respectively fixed on the pump body, the outer rings of the two groups of extrusion springs are respectively sleeved with a supporting sleeve, and the inner diameter of the supporting sleeve is equal to the outer diameter of the extrusion spring in a free state. The utility model discloses simple structure utilizes two extrusion spring's elasticity to keep the spacing ring to rotate on same horizontal plane, prevents that the spacing ring from squinting along the axis direction, and then guarantees the stability of pump shaft, avoids the pump shaft to squint along the axis direction.

Description

Axial positioning structure of pump shaft of impeller pump

Technical Field

The utility model relates to a impeller pump field of making, concretely relates to impeller pump shaft axial positioning structure.

Background

The impeller pump drives the impeller to rotate through the pump shaft, so that the impeller drives liquid to rotate at a high speed, and mechanical energy is transferred to the liquid, thereby achieving the purpose of conveying the liquid. In the rotating process of the pump shaft, axial movement is easy to occur, so that the pump body generates large vibration, the stability of the pump body is influenced, and the service life of the pump body is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome is that the pump shaft takes place the axial float easily at the rotation in-process, leads to impeller pump noise at work big, influences the life's of the pump body problem, and the purpose provides an impeller pump shaft axial positioning structure.

A structure for axially positioning a pump shaft of a vane pump, the vane pump including a pump shaft and a pump body having a vane cavity and a lubrication cavity, the structure comprising:

two extrusion springs are arranged and are respectively sleeved on the outer ring side of the pump shaft in a sleeving manner;

the ring sleeve is arranged on the pump shaft, and the two extrusion springs are respectively arranged on two sides of the limit ring;

the other ends of the two groups of extrusion springs are respectively connected with inner ring rings of a first bearing and a second bearing, the first bearing and the second bearing are respectively fixed on the pump body, the outer rings of the two groups of extrusion springs are respectively sleeved with a supporting sleeve, and the inner diameter of the supporting sleeve is equal to the outer diameter of the extrusion spring in a free state.

Furthermore, the limiting ring and the two extrusion springs are located inside the lubricating cavity.

Furthermore, two sides of the limiting ring are respectively provided with a pressing plate, the ends of the two groups of extrusion springs are respectively fixed on the limiting ring through the pressing plates, and the pressing plates on the two sides of the limiting ring are connected through positioning screws.

Furthermore, an outer convex block is arranged in the middle of the inner ring of the support sleeve, a limiting groove is formed in the outer convex block, and the middle of the extrusion spring is located inside the limiting groove.

Furthermore, both ends of the extrusion spring are positioned outside the supporting sleeve.

Furthermore, an oil hole is formed in the side face of the supporting sleeve.

The utility model has the advantages that:

the utility model discloses simple structure, through fixed spacing ring on the pump shaft, spacing ring both sides pump epaxial difference ring cover extrusion spring, the inner ring of first bearing and second bearing is connected respectively to the extrusion spring other end, first bearing is fixed on the pump body with the second bearing, the pump shaft is at the rotation in-process, it together rotates with the extrusion spring to drive the spacing ring, the elasticity that utilizes two extrusion springs keeps the spacing ring to rotate on same horizontal plane, prevent that the spacing ring from squinting along the axis direction, and then guarantee the stability of pump shaft, avoid the pump shaft to squint along the axis direction, through the outside ring cover at the extrusion spring and prop the cover, avoid the extrusion spring when following the pump shaft rotation, because the eccentric force problem takes place deformation, influence the extrusion effect of extrusion spring.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a structural diagram of the connection between the brace and the extrusion spring of the present invention;

in the figure: 1. a pump shaft; 2. an impeller cavity; 3. a lubrication chamber; 4. a pump body; 12. a compression spring; 13. a limiting ring; 14. a first bearing; 15. a second bearing; 16. supporting sleeves; 21. pressing a plate; 31. an outer bump; 32. a limiting groove; 41. and an oil hole.

Detailed Description

The technical means, creation characteristics, achievement purpose and efficacy of the utility model are easy to understand and understand, and the utility model is further explained by combining with the specific figure.

Example 1

As shown in fig. 1 and 2; a kind of impeller pump spindle axial positioning structure, the impeller pump includes the pump spindle 1, and have pump body 4 of the cavity 2 of impeller, lubricating cavity 3, the positioning structure includes:

two extrusion springs 12 are arranged and are respectively sleeved on the outer ring side of the pump shaft 1;

the limiting ring 13 is sleeved on the pump shaft 1, and the two extrusion springs 12 are respectively arranged on two sides of the limiting ring 13;

the other ends of the two groups of extrusion springs 12 are respectively connected with the inner ring of a first bearing 14 and the inner ring of a second bearing 15, the first bearing 14 and the second bearing 15 are respectively fixed on the pump body 4, the outer rings of the two groups of extrusion springs 12 are respectively sleeved with a support sleeve 16 in a ring mode, and the inner diameter of each support sleeve 16 is equal to the outer diameter of the extrusion spring 12 in a free state.

Spacing ring 13 and two extrusion springs 12 all are located lubricated intracavity portion 3, set up in lubricated intracavity portion, are convenient for lubricate extrusion spring, first bearing, second bearing.

The both sides of spacing ring 13 are equipped with clamp plate 21 respectively, and two sets of extrusion spring 12 ends are fixed on spacing ring 13 through clamp plate 21 respectively, and 13 both sides of spacing ring clamp plate 21 pass through set screw to be connected, and the extrusion spring passes through the clamp plate to be fixed on the spacing ring, follows the spacing ring and together rotates, avoids the extrusion spring wearing and tearing.

The outer convex block 31 is arranged in the middle of the inner ring of the supporting sleeve 16, the limiting groove 32 is formed in the outer convex block 31, the middle of the extrusion spring 12 is located in the limiting groove 32, the supporting sleeve is prevented from moving when sleeved on the extrusion spring, and abrasion caused by movement of the supporting sleeve is avoided.

Both ends of the extrusion spring 12 are positioned outside the supporting sleeve 16, so that the supporting sleeve is prevented from contacting a limiting ring and a bearing, and the abrasion is reduced.

A structure for axially positioning a pump shaft of an impeller pump has the working principle that:

pump shaft 1 passes through the bearing to be fixed on the pump body 4, install spacing ring 13 on the pump shaft 1, 13 both sides of spacing ring and first bearing 14, install extrusion spring 12 between second bearing 15 respectively, there is the brace 16 extrusion spring 12 outer ring, the effect of brace 16 is that it takes place the axial deformation of perpendicular to reduce extrusion spring 12 when rotating along with pump shaft 1, under the elastic force effect of extrusion spring 12, keep spacing ring 13 to rotate the stability of in-process, avoid spacing ring 13 to take place the skew, and then fix pump shaft 1.

Example 2

As shown in fig. 2; the oil hole 41 is arranged on the side surface of the supporting sleeve 16. Lubricating oil in the lubricating cavity can penetrate through the oil hole in the support sleeve and enter the support sleeve to lubricate the extrusion spring, the first bearing and the second bearing.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Axial positioning structure for the pump shaft of a vane pump comprising a pump shaft (1) and a pump body (4) with a vane cavity (2), a lubrication cavity (3), characterized in that it comprises:

two extrusion springs (12) are arranged and are respectively sleeved on the outer ring side of the pump shaft (1) in a surrounding manner;

the ring sleeve is arranged on the pump shaft (1), and the two extrusion springs (12) are respectively arranged on two sides of the limit ring (13);

two sets of the inner ring circle of first bearing (14), second bearing (15) is connected respectively to extrusion spring (12) other end, first bearing (14) are fixed respectively on the pump body (4) with second bearing (15), and are two sets of extrusion spring (12) outer lane encircles respectively has brace cover (16), brace cover (16) internal diameter equals extrusion spring (12) external diameter under the free state.

2. Pump shaft axial positioning structure for vane pumps, according to claim 1, characterized in that the stop ring (13) and the two compression springs (12) are located inside the lubrication chamber (3).

3. The axial positioning structure of the pump shaft of the vane pump is characterized in that two sides of the limiting ring (13) are respectively provided with a pressing plate (21), the ends of the two groups of extrusion springs (12) are respectively fixed on the limiting ring (13) through the pressing plates (21), and the pressing plates (21) on the two sides of the limiting ring (13) are connected through positioning screws.

4. The axial positioning structure of the pump shaft of the vane pump is characterized in that an outer bump (31) is arranged in the middle of the inner ring of the supporting sleeve (16), a limiting groove (32) is arranged on the outer bump (31), and the middle of the extrusion spring (12) is positioned inside the limiting groove (32).

5. Pump shaft axial positioning structure for vane pumps, according to claim 1, characterized in that said compression spring (12) is external to the brace (16) at both ends.

6. Axial positioning structure of pump shaft of vane pump, according to claim 1, characterized in that the side of the brace sleeve (16) is provided with oil holes (41).