CN215170839U

CN215170839U - Bearing structure for submersible wet type full tubular pump

Info

Publication number: CN215170839U
Application number: CN202120389077.8U
Authority: CN
Inventors: 李福英; 蔡皖锋; 张小琼; 王俊华
Original assignee: Hefei Kaiquan Motor Pump Co ltd
Current assignee: Hefei Kaiquan Motor Pump Co ltd
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2021-12-14
Anticipated expiration: 2031-02-22

Abstract

The utility model relates to a bearing arrangement for diving wet-type through-flow pump, bearing arrangement install on diving wet-type through-flow pump's the pump shaft, including A bearing portion, two outsides of A bearing portion are provided with B bearing portion and C bearing portion respectively and constitute, and it is the same to constitute A, B, C bearing portion used bearing. A. B, C the bearing parts are respectively composed of a bearing, and the bearings composing the A, B, C bearing parts are all angular contact ball bearings. The utility model provides an above-mentioned bearing structure, it has simple structure, and the bearing atress is even, and is not fragile, advantages such as bearing life-span.

Description

Bearing structure for submersible wet type full tubular pump

Technical Field

The utility model relates to a full tubular pump field of dive wet-type, concretely relates to a bearing arrangement for full tubular pump of dive wet-type.

Background

When a bearing is selected for a submersible wet type full-through-flow pump (the caliber is not more than 1m, the power is not more than 630kW, and the synchronous rotating speed is not more than 1000 r/min), two angular contact ball bearings and a cylindrical roller bearing are generally considered, and because the inner ring and the outer ring of the cylindrical roller bearing are separated, in the actual assembly, the end faces of the inner ring and the outer ring of the cylindrical roller bearing are not on the same plane, namely B1 is not equal to B2, so that only one bearing is stressed in the running process of the electric pump, the service life of the bearing is shortened, and the bearing is easy to damage.

As shown in FIG. 1, when B1 is greater than B2, the axial force is transmitted to the fixed end through the 2 outer rings, the 3 outer rings and the 1 inner and outer rings, and only 1 is stressed in the whole process, as shown in FIG. 2, when B1 is less than B2, the axial force is transmitted to the fixed end through the 2 inner and outer rings, the 4 inner rings and the 1 inner ring, and only 2 is stressed in the whole process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bearing arrangement for diving under water wet-type full tubular pump, its bearing atress is even.

The utility model discloses the scheme of taking does:

the utility model provides a bearing arrangement for diving under water wet-type full tubular pump which characterized in that: the bearing structure is arranged on a pump shaft of the submersible wet type full tubular pump and comprises a bearing part A, a bearing part B and a bearing part C are respectively arranged on the two outer sides of the bearing part A, and the bearings used for the bearing part A, B, C are the same.

Specifically, the method comprises the following steps:

A. b, C the bearing parts are each composed of one bearing.

The bearings constituting the A, B, C bearing portion are all angular contact ball bearings.

A. The bearings of the B bearing part are assembled in series, and the bearings of the A, C bearing part are arranged in parallel.

The model number of the angular contact ball bearing is 7317B.

The aperture of the diving wet type full through-flow pump is less than or equal to 1m, the power is less than or equal to 630KW, and the synchronous rotating speed is less than or equal to 1000 r/min.

The angular contact ball bearing is assembled on the pump shaft in a transition fit mode.

The two angular contact ball bearings at the water inlet end are assembled in series, and the two angular contact ball bearings at the water outlet end are arranged in parallel.

The two parallel angular contact ball bearings are connected in parallel in a back-to-back mode.

A shaft step is arranged on the outer side of the bearing part B, and a stop washer is arranged on the outer side of the bearing part C.

The utility model provides an above-mentioned bearing structure, it has simple structure, and the bearing atress is even, and is not fragile, advantages such as bearing life-span.

Drawings

FIGS. 1 and 2 are schematic views of two conventional bearing structures;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is a schematic view of the assembly of the present invention on a submersible wet full tubular pump;

the reference numbers correspond as follows:

100-pump shaft, 110-shaft step, 120-stop washer, 130-round nut, 210-B bearing part, 220-A bearing part, 230-C bearing part, 310-water inlet end bearing cover, 320-water outlet end bearing cover, 330-bearing seat and 340-mechanical seal.

Detailed Description

In order to make the objects and advantages of the present invention more apparent, the present invention will be described in detail with reference to the following embodiments. It is to be understood that the following text is only intended to describe one or several particular embodiments of the invention, and does not strictly limit the scope of the claims specifically claimed.

As shown in fig. 3 and 4, the bearing structure for the submersible wet type total-displacement pump is mounted on a pump shaft 100 of the submersible wet type total-displacement pump and comprises an a bearing part 220, wherein a B bearing part 210 and a C bearing part 230 are respectively arranged on two outer sides of the a bearing part 220, and the bearings used for the A, B,

C bearing parts

220, 210 and 230 are the same. A. B, C the bearing

parts

220, 210 and 230 are respectively composed of one bearing, and the bearings composing the A, B,

C bearing parts

220, 210 and 230 are all angular contact ball bearings. A. The bearings of

B bearing sections

220, 210 are assembled in series, and the bearings of A, C bearing sections are arranged in parallel 220, 230. The model number of the angular contact ball bearing is 7317B. The aperture of the diving wet type full through-flow pump is less than or equal to 1m, the power is less than or equal to 630KW, and the synchronous rotating speed is less than or equal to 1000 r/min. The angular contact ball bearing is assembled on the pump shaft in a transition fit mode. The two angular contact ball bearings at the water inlet end are assembled in series, and the two angular contact ball bearings at the water outlet end are arranged in parallel. The two parallel angular contact ball bearings are connected in parallel in a back-to-back mode. A shaft step is arranged outside the B bearing part 210, and a stop washer is arranged outside the C bearing part 230.

The shaft step 110, the stop washer 120 and the round nut 130 serve to prevent axial play of the bearing structure. The bearing structure is installed in a bearing chamber, the bearing chamber is composed of a water inlet end bearing cover 310, a water outlet end bearing cover 320 and a bearing seat 330, and the water inlet end bearing cover 310 and the water outlet end bearing cover 320 are sealed with the pump shaft 100 through a machine seal 340. For preventing water from entering the bearing chamber.

The utility model aims at designing and selecting when the bearing of dive wet-type full tubular pump (the bore is not more than 1m, power is not more than 630kW and synchronous speed is not higher than 1000 r/min), after the uneven fragile characteristics of the original bearing arrangement atress of full analysis, change original bearing arrangement into three angular contact ball bearing, the characteristics that the inner and outer lane terminal surface of make full use of angular contact ball bearing flushes among the new bearing arrangement, make the even transmission of power, prolong the bearing life, improve the reliability of wet-type full tubular pump.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention. The structures, devices, and methods of operation of the present invention, not specifically described and illustrated, are generally practiced by those of ordinary skill in the art without specific recitation or limitation.

Claims

1. The utility model provides a bearing arrangement for diving under water wet-type full tubular pump which characterized in that: the bearing structure is arranged on a pump shaft of the submersible wet type full tubular pump and comprises a bearing part A, a bearing part B and a bearing part C are respectively arranged on the two outer sides of the bearing part A, and the bearings used for the bearing part A, B, C are the same.

2. The bearing structure for a submersible wet full tubular pump according to claim 1, characterized in that: A. b, C the bearing parts are each composed of one bearing.

3. The bearing structure for a submersible wet full tubular pump according to claim 2, characterized in that: the bearings constituting the A, B, C bearing portion are all angular contact ball bearings.

4. The bearing structure for a submersible wet full tubular pump according to claim 3, characterized in that: A. the bearings of the B bearing part are assembled in series, and the bearings of the A, C bearing part are arranged in parallel.

5. The bearing structure for a submersible wet full tubular pump according to claim 3, characterized in that: the model number of the angular contact ball bearing is 7317B.

6. The bearing structure for a submersible wet full tubular pump according to claim 3, characterized in that: the aperture of the diving wet type full through-flow pump is less than or equal to 1m, the power is less than or equal to 630KW, and the synchronous rotating speed is less than or equal to 1000 r/min.

7. The bearing structure for a submersible wet full tubular pump according to claim 4, wherein: the angular contact ball bearing is assembled on the pump shaft in a transition fit mode.

8. The bearing structure for a submersible wet full tubular pump according to claim 4, wherein: the two angular contact ball bearings at the water inlet end are assembled in series, and the two angular contact ball bearings at the water outlet end are arranged in parallel.

9. The bearing structure for a submersible wet full tubular pump according to claim 8, wherein: the two parallel angular contact ball bearings are connected in parallel in a back-to-back mode.

10. The bearing structure for a submersible wet full tubular pump according to claim 9, wherein: a shaft step is arranged on the outer side of the bearing part B, and a stop washer is arranged on the outer side of the bearing part C.