CN204921459U

CN204921459U - Sealing device of centrifugal pump

Info

Publication number: CN204921459U
Application number: CN201520653594.6U
Authority: CN
Inventors: 韩军; 李兵; 匡欢; 韩辉
Original assignee: Tianjin Changlu Haijing Group Co Ltd
Current assignee: Tianjin Changlu Haijing Group Co Ltd
Priority date: 2015-08-27
Filing date: 2015-08-27
Publication date: 2015-12-30
Anticipated expiration: 2025-08-27

Abstract

The utility model discloses a sealing device of centrifugal pump, main shaft including the centrifugal pump, the suit is at main epaxial skeleton, inlay among the frame inner wall and adorn the sealing washer no. II, the fixed outside of tubes wall of skeleton overlaps in proper order from bottom to top and is equipped with the spring, the rotating seat, the rotating ring, quiet ring, the stationary seat, the fixed loop, two free ends of spring set up the assembly groove at the skeleton respectively, in the spring assembly groove of rotating seat, be provided with no. I the sealing washer in the rotating ring assembly groove of the rotating seat other end, the rotating ring, quiet ring is provided with the sealing washer no. III with the joint department of stationary seat, the inner wall department that inserts the stationary seat is held to the ladder of fixed loop, be provided with the fastening fixed loop in the fixed orifices of fixed loop, the screw of fixed pipe, stationary seat outer wall department be provided with with centrifugal pump body complex external screw thread, no. IV sealing washers. The utility model discloses sealed effectual, reuse nature is strong, only need pull down the screw when maintaining and change the sealing washer, and the sealing washer of four third of the ten heavenly stems fluorubber is more wear -resisting, long service life.

Description

A kind of seal arrangement of centrifugal pump

Technical field

The utility model belongs to a kind of mechanical seal device, is specifically related to a kind of seal arrangement of centrifugal pump.

Background technique

Centrifugal pump utilizes vane rotary and makes water generation centrifugal motion carry out work.Water pump before activation, must make to be full of water in pump case and suction sleeve, then starting electrical machinery, the output shaft of motor is connected with the main shaft of centrifugal pump, pump shaft impeller and water is made to do high speed rotary motion, water generation centrifugal motion, is thrown toward impeller outer edge, and the runner through volute pump case flows into the setting-out pipeline of water pump.

In industrial production; centrifugal pump is when carrying liquid material; due to the operation of needs long-time continuous; the main shaft of centrifugal pump often there will be leakage accident; high-frequency leakage fault causes a large amount of material loss; the leakage accident at centrifugal pump main shaft place not only can impact the working life of centrifugal pump, and greatly have impact on quantity-produced working efficiency.

Summary of the invention

The utility model proposes for solving prior art Problems existing, its objective is the seal arrangement providing a kind of centrifugal pump.

The technical solution of the utility model is: a kind of seal arrangement of centrifugal pump, comprise the main shaft of centrifugal pump, be sleeved on the skeleton on main shaft, setting-in No. II seal ring in inboard wall of skeleton, the fixed tube outer wall of skeleton is set with spring from bottom to top successively, rotating seat, rotating ring, stationary ring, stationary seat, retaining ring, two free ends of spring are separately positioned on the fitting recess of skeleton, in the spring fitting recess of rotating seat, No. I seal ring is provided with in the rotating ring fitting recess of the rotating seat the other end, rotating ring, the access section of stationary ring and stationary seat is provided with No. III seal ring, the stepped end of retaining ring is inserted into the inwall place of stationary seat, be provided with in the fixed hole of retaining ring and be fastened and fixed ring, the screw of fixed tube, stationary seat outer wall place is provided with the outside thread coordinated with centrifugal pump body, No. IV seal ring.

No. II described seal ring, No. I seal ring, No. III seal ring, No. IV seal ring material are 4 third fluorine rubber.

Rotating ring, stationary ring material is silicon carbide.

The utility model good sealing effect, reusing is strong, and only need pull down screw when safeguarding and change seal ring, greatly reducing maintenance materials expense, the seal ring of 4 third fluorine rubber is more wear-resisting, long service life.

Accompanying drawing explanation

Fig. 1 is plan view of the present utility model;

Fig. 2 is the plan view of skeleton in the utility model.

Wherein:

1 main shaft 2 skeleton

3 spring 4 rotating seats

5 No. I seal ring 6 rotating rings

7 stationary ring 8 stationary seats

9 No. 10 II, retaining ring seal rings

11 No. III seal rings, 12 No. IV seal rings

13 fixed hole 14 fitting recess

15 spring fitting recess 16 rotating ring fitting recess

17 fixed tube.

Embodiment

Below, with reference to drawings and Examples, the utility model is described in detail:

As shown in Figure 1, a kind of seal arrangement of centrifugal pump, comprise the main shaft 1 of centrifugal pump, be sleeved on the skeleton 2 on main shaft 1, setting-in No. II seal ring 10 in skeleton 2 inwall, fixed tube 17 outer wall in skeleton 2 is set with spring 3 from bottom to top successively, rotating seat 4, rotating ring 6, stationary ring 7, stationary seat 8, retaining ring 9, two free ends of spring 3 are separately positioned on the fitting recess 14 of skeleton 2, in the spring fitting recess 15 of rotating seat 4, No. I seal ring 5 is provided with in the rotating ring fitting recess 16 of rotating seat 4 the other end, rotating ring 6, stationary ring 7 is provided with No. III seal ring 11 with the access section of stationary seat 8, the stepped end of retaining ring 9 is inserted into the inwall place of stationary seat 8, arrange in the fixed hole 13 of retaining ring 9 and be fastened and fixed ring 9, the screw of fixed tube 17, stationary seat 8 outer wall place is provided with the outside thread coordinated with centrifugal pump body, No. IV seal ring 12.

No. II described seal ring 10, No. I seal ring 5, No. III seal ring 11, No. IV seal ring 12 material is 4 third fluorine rubber.

Rotating ring 6, stationary ring 7 material is silicon carbide.

Retaining ring 9 is fixed by the sidewall of screw and skeleton 2, and spring 3, rotating seat 4, rotating ring 6, stationary ring 7, stationary seat 8 can be carried out axial limiting by retaining ring 9 and skeleton 2 ladder end face.

During use, the outside thread that stationary seat 8 is formed by outer wall place is connected with centrifugal pump body, and realize the sealing between stationary seat 8 and centrifugal pump body by No. IV seal ring 12, main shaft 1 rotates under the drive of motor output shaft, and skeleton 2, No. II seal ring 10, spring 3, rotating seat 4, No. I seal ring 5, rotating ring 6, retaining ring 9 are all along with main shaft 1 rotates.

Seal arrangement of the present utility model, when safeguarding replacing, only need be pulled down the screw in fixed hole 13, change No. II seal ring 10, No. I seal ring 5, No. III seal ring 11, No. IV seal ring 12.

Claims

1. a seal arrangement for centrifugal pump, comprises the main shaft (1) of centrifugal pump, be sleeved on the skeleton (2) on main shaft (1), setting-in No. II seal ring (10) in skeleton (2) inwall, is characterized in that: fixed tube (17) outer wall of skeleton (2) is set with spring (3) from bottom to top successively, rotating seat (4), rotating ring (6), stationary ring (7), stationary seat (8), retaining ring (9), two free ends of spring (3) are separately positioned on the fitting recess (14) of skeleton (2), in the spring fitting recess (15) of rotating seat (4), in the rotating ring fitting recess (16) of rotating seat (4) the other end, be provided with No. I seal ring (5), rotating ring (6), stationary ring (7) is provided with No. III seal ring (11) with the access section of stationary seat (8), and the stepped end of retaining ring (9) is inserted into the inwall place of stationary seat (8), is provided with and is fastened and fixed ring (9) in the fixed hole (13) of retaining ring (9), the screw of fixed tube (17), stationary seat (8) outer wall place is provided with the outside thread coordinated with centrifugal pump body, No. IV seal ring (12).

2. the seal arrangement of a kind of centrifugal pump according to claim 1, is characterized in that: No. II described seal ring (10), No. I seal ring (5), No. III seal ring (11), No. IV seal ring (12) material are 4 third fluorine rubber.

3. the seal arrangement of a kind of centrifugal pump according to claim 1, is characterized in that: rotating ring (6), and stationary ring (7) material is silicon carbide.