CN214093049U

CN214093049U - Circulating pump shaft seal for chlorination device

Info

Publication number: CN214093049U
Application number: CN202022905280.4U
Authority: CN
Inventors: 张金虎; 梁凯
Original assignee: NANTONG HUIYUFENG NEW MATERIALS CO Ltd
Current assignee: NANTONG HUIYUFENG NEW MATERIALS CO Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-08-31
Anticipated expiration: 2030-12-07

Abstract

The utility model discloses a circulating pump bearing seal for chlorination device, including the axle sleeve, the rotating ring subassembly, quiet ring subassembly, spring and spring holder, the rotating ring subassembly links to each other with the axle sleeve outer end, and the rotating ring subassembly includes rotating ring and rotating ring sealing washer, and quiet ring subassembly includes quiet ring and quiet ring sealing washer, and the rotating ring opposite side links to each other with quiet ring one side, and quiet ring is provided with sealed step along both sides outward, and quiet ring sealing washer sets up on sealed step, and the spring holder sets up on the axle sleeve of rotating ring seat opposite side, and the spring sets up in the spring holder, spring one side and spring holder internal connection, and the spring opposite side is connected with the rotating ring seat. The utility model has the advantages of can reduce the bearing seal department leakage problem that appears in the chlorination liquid circulation through quiet ring subassembly, rotating ring subassembly and sealing washer, avoid receiving the hydrochloric acid through corrosion-resistant coating and rubber circle simultaneously and corrode, reduce the influence to external seal machinery, sealed effect is more excellent.

Description

Circulating pump shaft seal for chlorination device

Technical Field

The utility model relates to a sealed technical field of circulating pump, in particular to circulating pump bearing seal for chlorination device.

Background

Company produces food grade polyvinylidene chloride resin (abbreviated as PVDC resin) using two important raw materials: vinyl chloride monomer, vinylidene chloride monomer. The vinylidene chloride monomer sold in the market at present has defects on a plurality of indexes, and the quality of the vinylidene chloride monomer cannot meet the requirement of polymerizing PVDC resin, so that manufacturers at home and abroad at present adopt own unique process technology to produce and refine the vinylidene chloride monomer. Trichloroethane (chlorinated liquid) is required for producing vinylidene chloride monomer, and the chlorinated liquid is produced by adopting the chlorination addition technology of vinyl chloride.

The chlorination liquid in the organic chlorination reaction device is circulated by using a circulating pump, and in the circulation process of the chlorination liquid, the mechanical sealing part of the circulating pump is easy to leak, and the main reason of analysis is that the chlorination liquid can form hydrochloric acid which is a substance with strong corrosivity after contacting with water in the air, and the sealing part related to the mechanical sealing is corroded, so that the leakage is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a circulating pump bearing seal for chlorination device.

The above technical purpose of the present invention can be achieved by the following technical solutions:

1. the utility model provides a circulating pump bearing seal for chlorination device, its characterized in that includes axle sleeve, rotating ring subassembly, quiet ring subassembly, spring and spring holder, the rotating ring subassembly links to each other with the axle sleeve outer end, the rotating ring subassembly includes rotating ring and rotating ring sealing washer, quiet ring subassembly includes quiet ring and quiet ring sealing washer, the rotating ring opposite side links to each other with quiet ring one side, quiet ring is provided with sealed step along both sides outward, quiet ring sealing washer sets up on sealed step, the spring holder sets up on the axle sleeve of rotating ring seat opposite side, the spring sets up in the spring holder, spring one side and spring holder internal connection, the spring opposite side is connected with the rotating ring seat.

Preferably, a perfluoro rubber O-shaped ring is arranged between the movable ring seat and the movable ring, and the perfluoro rubber O-shaped ring is connected with the movable ring seat, the movable ring and the shaft sleeve in a sealing manner.

Preferably, a chromium sesquioxide coating is arranged at the contact position of the shaft sleeve, the perfluororubber O-shaped ring, the movable ring seat and the movable ring, and the thickness of the chromium sesquioxide coating is 0.2 mm.

Preferably, the static ring outside is still fixed and is provided with a briquetting, the briquetting is whole to be the L type, briquetting one side and static ring outer edge compress tightly, through static ring seal sealing connection between briquetting and the static ring.

Preferably, the other side of the pressing block is connected with the side wall of the stationary ring.

Preferably, the stationary ring is made of synthetic resin impregnated carbon graphite.

Preferably, the rotating ring assembly is made of a combined material, the rotating ring seat is a 316 stainless steel rotating ring seat, and the rotating ring is a silicon carbide rotating ring.

To sum up, the beneficial effects of the utility model are that: can reduce the bearing seal department leakage problem that appears in the chlorination liquid circulation through quiet ring subassembly, rotating ring subassembly and sealing washer, avoid receiving hydrochloric acid through corrosion-resistant coating and rubber circle simultaneously and corrode, reduce the influence to external seal machinery, sealed effect is more excellent.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The following description will be further described with reference to the accompanying drawings, which are not intended to limit the present invention.

The circulating pump shaft seal for the chlorination device shown in fig. 1 comprises a shaft sleeve 1, a moving ring assembly, a static ring assembly, a spring 2 and a spring seat 3, wherein the moving ring assembly is connected with the outer end of the shaft sleeve 1 and comprises a moving ring seat 4 and a moving ring 5, the moving ring assembly is made of a combined material, the moving ring seat 4 is a 316 stainless steel moving ring seat, the moving ring 5 is a silicon carbide moving ring, and one side of the moving ring 5 is arranged on the moving ring seat 4, so that the effects of wear resistance and corrosion resistance are achieved.

The static ring assembly comprises a static ring 6 and a static ring sealing ring 7, and the static ring B made of the synthetic material of the metal and the graphite is replaced by the static ring A made of the synthetic material of the synthetic resin impregnated carbon graphite to serve as the static ring 6, so that the corrosion capacity of hydrochloric acid generated after the contact of chlorination-resistant liquid and air is improved, the service life of the whole body is prolonged, and the sealing effect is enhanced.

5 opposite sides of rotating ring link to each other with quiet ring 6 one side, quiet ring 6 is provided with sealed step along both sides outward, quiet ring seal 7 sets up on sealed step, spring holder 3 sets up on the axle sleeve 1 of 4 opposite sides of rotating ring seat, spring 2 sets up in

spring holder

3, 2 one side of spring and 3 internal connections of spring holder, 2 opposite sides of spring are connected with rotating ring seat 4.

Be provided with perfluororubber O type circle 10 between rotating ring seat 4 and the rotating ring 5, perfluororubber O type circle 7 and rotating ring seat 4, rotating ring 5, axle sleeve 1 sealing connection, perfluororubber O type circle 10 adopts special perfluororubber to seal, compensates the wearing and tearing defect that some vibrations that produce in the equipment operation process lead to through the elasticity that utilizes rubber, realizes secondary seal.

The contact part of the shaft sleeve 1 and the perfluororubber O-shaped ring 7, the moving ring seat 4 and the moving ring 5 is provided with a chromium oxide coating, the thickness of the chromium oxide coating is 0.2mm, the chromium oxide coating has excellent corrosion resistance and wear resistance, the coating is insoluble in acid and alkali, the chromium oxide coating is sealed at the contact part, the sealing effect is improved, and the sealing sleeve can be used for a long time in a chemical corrosion environment of hydrochloric acid.

Still fixedly, be provided with a briquetting 8 in the quiet ring 6 outside, briquetting 8 is whole to be the L type, 8 one side of briquetting compresses tightly with quiet ring 6 outer edge, through quiet ring seal 7 sealing connection between briquetting 8 and the quiet ring 6.

The other side of the pressing block 8 is connected with the side wall of the static ring 6, and the pressing block 8 is connected with the side wall of the static ring 6.

And the sealing surface at the other side of the movable ring is connected with the sealing surface at one side of the static ring.

The utility model discloses well spring 2, spring holder 3 all adopt the stainless steel 316 material, have good hydrochloric acid corrosion resistance ability, and some silicon carbide materials for the sealed position of axle sleeve 1 are corrosion-resistant, high temperature resistant, stand wear and tear, even have the trace condition of leaking, still keep the intact leakproofness of axle sleeve 1.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art can make various modifications or equivalent substitutions within the spirit and scope of the present invention, and such modifications or equivalent substitutions should also be considered as falling within the scope of the present invention.

Claims

2. The circulating pump shaft seal for a chlorination device according to claim 1, wherein: a perfluorinated rubber O-shaped ring is arranged between the movable ring seat and the movable ring and is in sealing connection with the movable ring seat, the movable ring and the shaft sleeve.

3. The circulating pump shaft seal for a chlorination apparatus according to claim 1 or 2, wherein: and a chromium sesquioxide coating is arranged at the contact position of the shaft sleeve and the perfluororubber O-shaped ring, the moving ring seat and the moving ring, and the thickness of the chromium sesquioxide coating is 0.2 mm.

4. The circulating pump shaft seal for a chlorination device according to claim 1, wherein: still fixedly, be provided with a briquetting in the quiet ring outside, the briquetting is whole to be the L type, briquetting one side compresses tightly with quiet ring outer edge, through quiet ring seal sealing connection between briquetting and the quiet ring.

5. The circulating pump shaft seal for a chlorination device according to claim 4, wherein: the other side of the pressing block is connected with the side wall of the stationary ring.

6. The circulating pump shaft seal for a chlorination device according to claim 1, wherein: and the sealing surface at the other side of the movable ring is connected with the sealing surface at one side of the static ring.

7. The circulating pump shaft seal for a chlorination device according to claim 1, wherein: the static ring is made of synthetic resin impregnated carbon graphite.

8. The circulating pump shaft seal for a chlorination device according to claim 1, wherein: the movable ring assembly is made of a combined material, the movable ring seat is a 316 stainless steel movable ring seat, and the movable ring is a silicon carbide movable ring.