CN218472910U

CN218472910U - Static sealing structure of submersible axial-flow pump motor

Info

Publication number: CN218472910U
Application number: CN202222291546.XU
Authority: CN
Inventors: 李侠; 吴洪辉; 张伟
Original assignee: Shanghai Liancheng Group Suzhou Co Ltd
Current assignee: Shanghai Liancheng Group Suzhou Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-02-10
Anticipated expiration: 2032-08-30

Abstract

The utility model provides a static seal structure of a submersible axial-flow pump motor, which comprises a bearing seat and an O-shaped sealing ring, wherein the bearing seat is positioned between a motor upper end cover and a motor shell, the inner side of the motor upper end cover is sunken to be provided with an annular mounting groove, the mounting groove is positioned at the bottom of the motor upper end cover, the inner side of the mounting groove is sunken to be provided with a sealing groove, the sealing groove is positioned at the bottom of the mounting groove, the outer side of the upper end of the bearing seat is provided with an annular upper connecting piece, the upper connecting piece is radially protruded and embedded into the mounting groove to be arranged, the outer wall of the upper connecting piece compresses the inner wall of the O-shaped sealing ring, and the outer wall of the O-shaped sealing ring is laminated with the inner wall of the sealing groove; the utility model discloses a one O type rubber seal carries out radial static seal, replaces the static seal structure of traditional twice axial, and the bearing frame passes through motor housing and presses on the motor upper end cover, improves motor upper end cover, bearing frame, motor housing structure for reduce submersible motor and leak hidden danger, increase operational reliability.

Description

Static sealing structure of submersible axial-flow pump motor

Technical Field

The utility model relates to an axial-flow pump technical field especially relates to a static seal structure of dive axial-flow pump motor.

Background

The existing structure is shown in figure 1, the motor upper end cover, the bearing seat and the motor shell of the submersible axial-flow pump are connected together by screws for assembling, and two leakage hidden trouble points of the structure are as follows: the first position is between the motor upper end cover 1 and the bearing seat 3, and the second position is between the motor shell 2 and the bearing seat 3.

In order to prevent a conveying medium from entering the submersible motor, a first O-shaped rubber sealing ring 10 is adopted between the upper end cover 1 of the motor and the bearing seat 3 for axial static sealing, a second O-shaped rubber sealing ring 11 is adopted between the motor shell 2 and the bearing seat 3 for axial static sealing, the assembly is troublesome, and the leakage reasons are difficult to determine at two leakage hidden trouble points.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a quiet seal structure of dive axial-flow pump motor.

In order to realize the purpose, the technical scheme of the utility model is that:

the utility model provides a static seal structure of dive axial-flow pump motor, includes bearing frame and O type sealing washer, the bearing frame is located between motor upper end cover and the motor casing, a serial communication port, the internal diameter of motor upper end cover is less than the internal diameter of motor casing, the inboard of motor upper end cover is sunken to be equipped with annular mounting groove, the mounting groove is located the bottom of motor upper end cover, the inboard of mounting groove is sunken to be equipped with the seal groove, the seal groove is located the bottom of mounting groove, the outside of bearing frame upper end is equipped with annular last connecting piece, it sets up along radial protrusion and embedding mounting groove to go up the connecting piece, the outer wall of going up the connecting piece compresses tightly the inner wall of O type sealing washer, the outer wall of O type sealing washer and the inner wall laminating of seal groove.

Furthermore, the outer side of the lower end of the bearing seat is provided with an annular lower connecting piece, the lower connecting piece is arranged in a protruding mode along the axial direction, and the outer wall of the lower connecting piece is tightly matched with the inner wall of the motor shell.

Further, motor upper end cover includes end cover main body and the solid fixed ring of end cover, the solid fixed ring of end cover is connected with end cover main body's bottom, the solid fixed ring of end cover is for the end cover main body along the protrusion of radially outside, the mounting groove is located the solid fixed ring's of end cover bottom.

Furthermore, the end cover fixing ring penetrates through the motor casing along the axial direction and is provided with a connecting screw, and the end cover fixing ring is fixedly connected with the motor casing through the connecting screw.

The utility model discloses a one O type rubber seal carries out radial static seal, replaces the static seal structure of traditional twice axial, and the bearing frame passes through motor housing and presses on the motor upper end cover, improves motor upper end cover, bearing frame, motor housing structure for reduce submersible motor and leak hidden danger, increase operational reliability.

Drawings

FIG. 1 is a schematic view of a static sealing structure of a submersible axial-flow pump in the prior art;

fig. 2 is a schematic view of the overall structure of the present invention.

Reference numerals are as follows:

1 motor upper end cover, 101 end cover main body, 102 end cover fixing ring,

2 motor shell, 3 bearing seat, 4O-shaped sealing ring, 5 mounting groove,

6 sealing grooves, 7 upper connecting pieces, 8 lower connecting pieces, 9 connecting screws,

10 first O-shaped rubber sealing rings and 11 second O-shaped rubber sealing rings.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses a static seal structure of dive axial-flow pump motor, as shown in fig. 2, including bearing frame 3 and O type sealing washer 4, bearing frame 3 is located between motor upper end cover 1 and the motor housing 2, and motor upper end cover 1's internal diameter is less than motor housing 2's internal diameter, and motor upper end cover 1's inboard is sunken to be equipped with annular mounting groove 5, and mounting groove 5 is located motor upper end cover 1's bottom, and the inboard of mounting groove 5 is sunken to be equipped with seal groove 6, and seal groove 6 is located the bottom of mounting groove 5.

The outer side of the upper end of the bearing seat 3 is provided with an annular upper connecting piece 7, the upper connecting piece 7 protrudes along the radial direction and is embedded into the mounting groove 5, the outer wall of the upper connecting piece 7 compresses the inner wall of the O-shaped sealing ring 4, the outer wall of the O-shaped sealing ring 4 is attached to the inner wall of the sealing groove 6, only one radial static sealing of the O-shaped sealing ring 4 is used, and the assembly is easy.

As shown in fig. 2, an annular lower connecting member 8 is disposed outside the lower end of the bearing housing 3, the lower connecting member 8 is axially protruded, and an outer wall of the lower connecting member 8 is tightly fitted with an inner wall of the motor casing 2.

The motor upper end cover 1 comprises an end cover main body 101 and an end cover fixing ring 102, the end cover fixing ring 102 is connected with the bottom end of the end cover main body 101, the end cover fixing ring 102 protrudes outwards in the radial direction relative to the end cover main body 101, and the mounting groove 5 is located at the bottom of the end cover fixing ring 102.

The end cover fixing ring 102 is provided with a connecting screw 9 in an axial direction in a penetrating manner, and the end cover fixing ring 102 is fixedly connected with the motor shell 2 through the connecting screw 9.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a quiet seal structure of dive axial-flow pump motor, includes bearing frame and O type sealing washer, the bearing frame is located between motor upper end cover and the motor casing, a serial communication port, the internal diameter of motor upper end cover is less than the internal diameter of motor casing, the inboard of motor upper end cover is sunken to be equipped with annular mounting groove, the mounting groove is located the bottom of motor upper end cover, the inboard of mounting groove is sunken to be equipped with the seal groove, the seal groove is located the bottom of mounting groove, the outside of bearing frame upper end is equipped with annular upper junction spare, the upper junction spare is along radial protrusion and embedding mounting groove setting, the outer wall of upper junction spare compresses tightly the inner wall of O type sealing washer, the outer wall of O type sealing washer and the inner wall laminating of seal groove.

2. The static seal structure of a submersible axial-flow pump motor according to claim 1, wherein an annular lower connecting piece is arranged on the outer side of the lower end of the bearing seat, the lower connecting piece is arranged in a protruding manner along the axial direction, and the outer wall of the lower connecting piece is tightly matched with the inner wall of the motor shell.

3. The static seal structure of a submersible axial-flow pump motor according to claim 1, wherein the motor upper end cap comprises an end cap main body and an end cap fixing ring, the end cap fixing ring is connected with the bottom end of the end cap main body, the end cap fixing ring protrudes outwards in the radial direction relative to the end cap main body, and the mounting groove is located at the bottom of the end cap fixing ring.

4. The static seal structure of a submersible axial-flow pump motor according to claim 3, wherein the end cover fixing ring is provided with a connecting screw axially penetrating therethrough, and the end cover fixing ring is fixedly connected with the motor casing through the connecting screw.