CN210859318U

CN210859318U - Centrifugal pump shaft sleeve capable of reducing leakage points for hydrogen fluoride production

Info

Publication number: CN210859318U
Application number: CN201921619366.1U
Authority: CN
Inventors: 毛炜琪; 马泽基; 张文强
Original assignee: Fujian Wengfu Lantian Fluorchem Co ltd
Current assignee: Fujian Wengfu Lantian Fluorchem Co ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-06-26
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a centrifugal pump shaft sleeve of reducible leakage point of hydrogen fluoride production usefulness belongs to hydrogen fluoride production technical field. A centrifugal pump shaft sleeve capable of reducing leakage points for hydrogen fluoride production comprises a body and an outer lining anti-corrosion assembly sleeved outside the front end of the body, wherein the outer lining anti-corrosion assembly consists of an outer lining pipe and a plurality of annular spring pins which are arranged on the inner side of the outer lining pipe at equal intervals; the utility model carries out PP treatment on the outer lining of the front part of the shaft sleeve, simultaneously cancels the O-shaped ring groove, reduces leakage points and ensures that the part immersed in the medium is not corroded by the medium; the utility model discloses still through set up a plurality of spring pins in bushing pipe inboard, the bushing pipe of being convenient for cup joints fixedly with the axle sleeve front portion.

Description

Centrifugal pump shaft sleeve capable of reducing leakage points for hydrogen fluoride production

Technical Field

The utility model relates to a hydrogen fluoride production technical field, more specifically say, relate to a centrifugal pump axle sleeve of reducible leakage point of hydrogen fluoride production usefulness.

Background

The former chemical centrifugal pump axle sleeve structure that uses of hydrogen fluoride apparatus for producing has designed and has used for many years, and whole result of use is unsatisfactory, because the anterior long-term 45% concentration fluosilicic acid corrosive liquid of contact of axle sleeve is in running state, and the axle sleeve material is 45# steel, and the axle sleeve corrodes easily after the time length and leaks. In view of this, we propose a centrifugal pump shaft sleeve for hydrogen fluoride production that reduces leakage points.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

An object of the utility model is to provide a centrifugal pump axle sleeve of reducible leakage point of hydrogen fluoride production usefulness to solve the problem that provides among the above-mentioned background art.

2. Technical scheme

A centrifugal pump shaft sleeve capable of reducing leakage points for hydrogen fluoride production comprises a body and an outer lining anti-corrosion assembly sleeved on the outer side of the front end of the body, wherein the outer lining anti-corrosion assembly consists of an outer lining pipe and a plurality of annular spring pins which are arranged on the inner side of the outer lining pipe at equal intervals; an annular sleeve groove is formed in the outer side of the front end of the body, and a plurality of clamping grooves are formed in the middle of the annular sleeve groove in a one-to-one correspondence mode at positions corresponding to the plurality of spring pins; a plurality of spring grooves are correspondingly formed in the positions, corresponding to the plurality of spring pins, of the inner wall of the middle part of the outer liner tube, the spring grooves are of a convex structure, and a section of internal thread is formed in the inner wall of the small head end of each spring groove; the spring pin comprises a pin bush, a pin groove communicated with the outside is formed in one end of the pin bush, a spring is sleeved in the pin groove, and one section of external thread is further formed in the outer side of one end, close to the pin groove, of the pin bush.

Preferably, the size of the annular sleeve groove is matched with that of the outer liner pipe.

Preferably, the outer liner tube is made of polypropylene.

Preferably, the inner side of the clamping groove is in clamping fit with the outer side of one end, far away from the pin groove, of the pin sleeve.

Preferably, the inner side of the internal thread is in threaded engagement with the outer side of the external thread.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

1. the utility model carries out PP treatment on the outer lining of the front part of the shaft sleeve, simultaneously cancels the O-shaped ring groove, reduces leakage points and ensures that the part immersed in the medium is not corroded by the medium;

2. the utility model discloses a set up a plurality of spring pins in bushing pipe inboard, the bushing pipe of being convenient for cup joints fixedly with the axle sleeve front portion.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the body of the present invention;

fig. 3 is a schematic view of the sectional structure and the connection structure of the outer liner tube of the present invention.

The reference numbers in the figures illustrate: 1. a body; 101. an annular sleeve groove; 102. a card slot; 2. an outer liner tube; 201. a spring slot; 202. an internal thread; 3. a spring pin; 301. a pin bush; 302. a pin slot; 303. a spring; 304. and (4) external threads.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-3, the present invention provides a technical solution:

a centrifugal pump shaft sleeve capable of reducing leakage points for hydrogen fluoride production comprises a body 1 and an outer lining anti-corrosion assembly sleeved outside the front end of the body 1, wherein the outer lining anti-corrosion assembly consists of an outer lining pipe 2 and a plurality of annular spring pins 3 arranged on the inner side of the outer lining pipe 2 at equal intervals;

an annular sleeve groove 101 is formed in the outer side of the front end of the body 1, and a plurality of clamping grooves 102 are formed in the middle of the annular sleeve groove 101 in a one-to-one correspondence mode at positions corresponding to the plurality of spring pins 3;

a plurality of spring grooves 201 are correspondingly formed in the positions, corresponding to the plurality of spring pins 3, of the inner wall of the middle part of the outer liner tube 2 one by one, the spring grooves 201 are of a convex structure, and a section of internal thread 202 is formed in the inner wall of the small end of each spring groove 201;

the spring pin 3 comprises a pin sleeve 301, a pin groove 302 communicated with the outside is formed in one end of the pin sleeve 301, a spring 303 is sleeved in the pin groove 302, and a section of external thread 304 is further formed in the outer side of one end, close to the pin groove 302, of the pin sleeve 301.

Specifically, the size of the annular sleeve groove 101 is matched with the size of the outer liner tube 2. Namely, the diameter of the outer ring of the outer liner tube 2 is the same as that of the middle part of the body 1, so that the front part of the shaft sleeve is the same as the original size after being treated by the outer liner PP.

Further, the outer liner tube 2 is made of polypropylene. Polypropylene is a polymer obtained by addition polymerization of propylene. Is white wax-like material, and has transparent and light appearance. Can resist the corrosion of acid, alkali, salt solution and various organic solvents at the temperature of below 80 ℃.

It is noted that the inside of the slot 102 is snap-fitted to the outside of the end of the pin sleeve 301 remote from the pin slot 302. The clamping fit of the clamping groove 102 and the pin sleeve 301 facilitates the fixation of the outer liner tube 2 with the front part of the shaft sleeve.

In addition, the inner side of the internal thread 202 is threadedly engaged with the outer side of the external thread 304. The utility model discloses in putting into the cotter 302 of cotter 301 with spring 303 earlier, in precession spring slot 201 with cotter 301 again, because external screw thread 304 and internal thread 202 set up to one section distance, consequently the screw thread is back in precession spring slot 201, and cotter 301 has flexible function under spring 303's the effect of the compound power.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a centrifugal pump axle sleeve of reducible leak point of hydrogen fluoride production usefulness which characterized in that: the anti-corrosion outer lining assembly comprises a body (1) and an outer lining anti-corrosion assembly sleeved on the outer side of the front end of the body (1), wherein the outer lining anti-corrosion assembly consists of an outer lining pipe (2) and a plurality of annular spring pins (3) which are arranged on the inner side of the outer lining pipe (2) at equal intervals; an annular sleeve groove (101) is formed in the outer side of the front end of the body (1), and a plurality of clamping grooves (102) are formed in the middle of the annular sleeve groove (101) in a one-to-one correspondence mode at positions corresponding to the plurality of spring pins (3); a plurality of spring grooves (201) are correspondingly formed in the positions, corresponding to the plurality of spring pins (3), of the inner wall of the middle part of the outer liner tube (2), the spring grooves (201) are of a convex structure, and a section of internal thread (202) is formed in the inner wall of the small end of each spring groove (201); spring catch (3) are including cotter (301), cotter way (302) rather than external intercommunication is seted up to cotter way (301) one end inside, cotter way (302) endotheca is equipped with spring (303), just one section external screw thread (304) have still been seted up in the one end outside that is close to cotter way (302) on cotter way (301).

2. The centrifugal pump shaft sleeve capable of reducing leakage points for hydrogen fluoride production according to claim 1, wherein: the size of the annular sleeve groove (101) is matched with that of the outer liner pipe (2).

3. The centrifugal pump shaft sleeve capable of reducing leakage points for hydrogen fluoride production according to claim 1, wherein: the outer liner tube (2) is made of polypropylene.

4. The centrifugal pump shaft sleeve capable of reducing leakage points for hydrogen fluoride production according to claim 1, wherein: the inner side of the clamping groove (102) is in clamping fit with the outer side of one end, far away from the pin groove (302), of the pin sleeve (301).

5. The centrifugal pump shaft sleeve capable of reducing leakage points for hydrogen fluoride production according to claim 1, wherein: the inner side of the internal thread (202) is in threaded fit with the outer side of the external thread (304).