CN213298264U

CN213298264U - Carry easy gasification medium shielding gleitbretter pump structure

Info

Publication number: CN213298264U
Application number: CN202021372598.4U
Authority: CN
Inventors: 李信鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2021-05-28
Anticipated expiration: 2030-07-15

Abstract

The utility model relates to a carry easy gasification medium shielding gleitbretter pump structure, shielding motor and gleitbretter pump, shielding motor includes: the stator assembly, the stator shielding sleeve and the rotor assembly, the rotor shielding sleeve, the front sliding bearing, the rear sliding bearing, the thrust plate, the front flange and the rear flange; a bearing detection meter is arranged on a shell of the shielding motor, and a rotor shaft of the shielding motor and a pump shaft of the sliding vane pump are integrally designed into a main shaft; the sliding vane pump comprises: the pump body, the bearing frame, the stator, the rotor, the sliding vane, the safety pressure relief valve component, the baffle, the inlet connecting pipe and the outlet connecting pipe; the rotor is installed at the front end of the main shaft, a sliding vane is arranged in a groove of the rotor, a reverse circulation bent pipe is connected to a rear bearing seat of the sliding vane pump, and a reverse circulation flange is connected to the reverse circulation bent pipe. A high-pressure medium is led out from the cavity of the sliding vane pump to the cavity of the shielding motor, and the medium passes through a gap between the stator shielding sleeve and the rotor shielding sleeve to the rear bearing of the shielding motor and returns to a vapor phase area in a liquid suction tank of the sliding vane pump through a reverse circulation bent pipe.

Description

Carry easy gasification medium shielding gleitbretter pump structure

Technical Field

The utility model relates to a pump, concretely relates to safe and reliable ground carries easy gasification medium shielding gleitbretter pump structure of transport of inflammable and explosive easy gasification medium.

Background

The mechanical seal pump is a dynamic seal pump, has the possibility of leakage in the operation process, has unsafe factors for the transportation of inflammable and explosive media, and brings potential safety hazards to the transportation. Therefore, how to reduce the possibility of leakage during the conveying process of the conveying pump and improve the safety and reliability of the conveying process of the flammable, explosive and easily vaporized medium is a technical problem to be solved by those skilled in the art at present.

Its structure of current sliding vane pump is the output shaft transmission that the pump shaft passes through shaft coupling and motor usually and is connected, is equipped with mechanical seal device on the pump shaft, and the problem that the sliding vane pump of current structure exists is: along with the long-time operation of the sliding vane pump, the sealing end faces of a moving ring and a static ring of the mechanical seal are easy to cause unreliable sealing due to abrasion or corrosion, so that liquid is leaked outside, and the requirement for conveying flammable, explosive and gasified media cannot be met.

SUMMERY OF THE UTILITY MODEL

The invention aims to provide a shielding sliding vane pump for conveying an easily vaporized medium, which can effectively reduce the possibility of leakage of the easily vaporized medium in the conveying process and improve the safety and reliability of the easily vaporized medium in the conveying process.

The utility model provides a carry easy gasification medium shielding vanes pump structure which characterized in that: carry easy gasification medium shielding vanes pump structure includes: canned motor and sliding vane pump, canned motor includes: the stator component and the rotor component are provided with a stator shielding sleeve and a rotor shielding sleeve which are made of nonmagnetic corrosion-resistant metal sheets on the inner surface of the stator component and the outer surface of the rotor component; a bearing monitoring meter is installed on a shell of the shielding motor, and a rotor shaft of the shielding motor and a pump shaft of the sliding vane pump are integrally designed into a main shaft; a rotor is arranged at the front section of the main shaft, balancing holes are formed in two sides of the rotor, the rotor is provided with 10 radial sliding grooves, and a sliding sheet is arranged in each radial sliding groove; the back bearing seat of the sliding vane pump is connected with a reverse circulation elbow, and the other end of the reverse circulation elbow is connected with a reverse circulation flange.

In the embodiment of the present invention, in the cavity from the cavity of the sliding vane pump to the shielding motor, the medium passes through the gap between the stator shielding sleeve and the rotor shielding sleeve to the rear bearing of the shielding motor and returns to the vapor phase region in the suction liquid tank of the sliding vane pump through the reverse circulation elbow.

In the embodiment of the present invention, the two end portions of the stator shielding sleeve and the rotor shielding sleeve are welded and sealed with the stator assembly and the rotor assembly by using a corrosion-resistant thick metal plate, and are completely isolated from the transported liquid.

In an embodiment of the present invention, the shielding sliding vane pump is connected between the front bearing bracket and the main shaft through a first sliding bearing, and the rear bearing bracket is connected between the main shaft through a second sliding bearing.

The utility model discloses an actively advance the effect and lie in: the utility model provides a carry easy gasification medium shielding gleitbretter pump structure has following advantage: the utility model discloses in drawing high-pressure medium to canned motor's cavity from the gleitbretter pump cavity, the medium gets back to the vapour phase district in the suction cistern jar of gleitbretter pump through the reverse circulation return bend to canned motor's rear bearing in clearance between stator shield cover and the rotor shield cover.

The utility model provides a transportation problem of inflammable and explosive easily gasification medium. The use cost is reduced. The utility model discloses the reliability of carrying easy gasification medium has been improved greatly.

Drawings

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

Detailed Description

The following provides a preferred embodiment of the present invention with reference to the accompanying drawings to explain the technical solutions of the present invention in detail.

Fig. 1 is a schematic structural diagram of the present invention. As shown in fig. 1: the utility model relates to a carry easy gasification medium shielding sliding vane pump structure, including sliding vane pump 1 and shielding motor 2, shielding motor 2 includes: the stator assembly 13 and the rotor assembly 14, wherein the stator shielding sleeve 17 and the rotor shielding sleeve 22 made of nonmagnetic corrosion-resistant metal sheets are arranged on the inner surface of the stator assembly 13 and the outer surface of the rotor assembly 14; a bearing monitoring meter 15 is arranged on a shell 23 of the shielding motor 2, and a rotor shaft of the shielding motor 2 and a pump shaft of the sliding vane pump 1 are integrally designed into a main shaft 5; a rotor 11 is arranged at the front section of the main shaft 5, balancing holes 7 are formed in two sides of the rotor, the rotor is provided with 10 radial sliding grooves, and each radial sliding groove is internally provided with a sliding vane 8; the sliding vane pump 1 is provided with a safety valve assembly 9; the back bearing bracket 19 of the sliding vane pump 1 is connected with a reverse circulation bent pipe 18, and the other end of the reverse circulation bent pipe 18 is connected with a reverse circulation flange 16.

High-pressure medium is led out from the cavity of the sliding vane pump 1 to the cavity of the shielding motor 2, and the medium passes through a gap between the stator shielding sleeve 17 and the rotor shielding sleeve 22 to the rear bearing frame 19 of the shielding motor 2 and returns to a vapor phase area in a suction liquid tank of the sliding vane pump 1 through the reverse circulation bent pipe 18.

The two end parts of the stator shielding sleeve 17 and the rotor shielding sleeve 22 are welded and sealed with the stator assembly 13 and the rotor assembly 14 by corrosion-resistant metal thick plates, and are completely separated from the conveying liquid. The whole shielded sliding vane pump is mounted on a base 20, and a frame 21 is arranged between the base 20 and the shielded sliding vane pump.

Sealing gaskets or sealing rings are arranged between the pump body 3 of the shielding sliding vane pump and the bearing frame 4 and between the front flange 12 and between the rear bearing frame 19 and the rear flange 26. The sealing rings or the sealing gaskets can further improve the sealing performance between the pump body 3 and the bearing frame 4, between the flange 12 and between the rear bearing frame 19 and the rear flange 26, and further reduce the possibility of medium leakage, thereby effectively reducing unsafe factors in the process of conveying the easily vaporized medium and improving the safety and reliability of the pump in the operation process.

In a preferred embodiment, the front bearing frame 4 and the main shaft 5 are connected by a first sliding bearing 6, the rear bearing frame 19 and the main shaft 5 are connected by a second sliding bearing 25, and the first sliding bearing 6 and the second sliding bearing 25 both comprise a silicon carbide inner ring and a silicon carbide outer ring. When the shielding sliding vane pump works, the front bearing frame 4 and the rear bearing frame 19 are respectively fixedly connected with the outer rings of the first sliding bearing 6 and the second sliding bearing 25, the main shaft 5 is respectively fixedly connected with the inner rings of the first sliding bearing 6 and the second sliding bearing 25, the service life of the pump can be effectively prolonged by the silicon carbide inner ring and the silicon carbide outer ring, the replacement frequency of the sliding bearings is reduced, the maintenance cost of the sliding vane pump is reduced, and meanwhile, the operation cost in the process of conveying an easily vaporized medium is reduced.

Further improvements can be made to the above-described shielded sliding vane pump.

The utility model discloses carry the flow direction of liquid: flow direction of the transport liquid: inlet of the pump body → rotor → outlet of the pump body → process system.

Flow direction of circulating liquid: the inlet of the pump body → the rotor → the small hole of the baffle → the gap between the stator shielding sleeve and the rotor shielding sleeve → the gap between the rear side shaft sleeves of the rear bearing frame → the reverse circulation bent pipe on the rear bearing frame → the vapor phase area in the tank where the pump sucks in.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a carry easy gasification medium shielding vanes pump structure which characterized in that: the shielding sliding vane pump structure for conveying the easily gasified medium comprises a shielding motor and a sliding vane pump, wherein the shielding motor comprises a stator component, a rotor component and a rear bearing frame, a stator shielding sleeve and a rotor shielding sleeve which are made of non-magnetic corrosion-resistant metal sheets are arranged on the inner surface of the stator component and the outer surface of the rotor component, a reverse circulation bent pipe is connected to the rear bearing frame of the shielding motor, a reverse circulation flange is connected to the other end of the reverse circulation bent pipe, a bearing monitoring meter is arranged on a shell of the shielding motor, the rotor shaft of canned motor designs into the main shaft with the pump shaft an organic whole of sliding vane pump, and the sliding vane pump includes the pump body, preceding bearing bracket, stator, rotor, gleitbretter, safe pressure relief valve subassembly, baffle, import takeover, export takeover, and the rotor is installed to the anterior segment of main shaft, and there is the balancing hole both sides on the rotor, the rotor has 10 radial spouts, each be equipped with the gleitbretter in the radial spout.

2. The conveying easy-to-gasify medium shielding sliding vane pump structure according to claim 1, characterized in that: a high-pressure medium is led out from the cavity of the sliding vane pump to the cavity of the shielding motor, and the medium passes through a gap between the stator shielding sleeve and the rotor shielding sleeve to the rear bearing of the shielding motor and returns to a vapor phase area in a liquid suction tank of the sliding vane pump through a reverse circulation bent pipe.

3. The conveying easy-to-gasify medium shielding sliding vane pump structure according to claim 1, characterized in that: the two ends of the stator shielding sleeve and the rotor shielding sleeve are welded and sealed with the stator assembly and the rotor assembly through corrosion-resistant metal thick plates and are completely isolated from the conveyed liquid.

4. The conveying easy-to-gasify medium shielding sliding vane pump structure according to claim 1, characterized in that: the front bearing frame is connected with the main shaft through a first sliding bearing, and the rear bearing frame is connected with the main shaft through a second sliding bearing.

5. The conveying easy-to-gasify medium shielding sliding vane pump structure according to claim 1, characterized in that: sealing gaskets or sealing rings are arranged between the pump body and the front bearing frame, between the pump body and the front flange, and between the rear bearing frame and the rear flange.

6. The conveying easy-to-gasify medium shielding sliding vane pump structure according to claim 1, characterized in that: the whole shielding sliding vane pump is arranged on the base, and a frame is arranged between the base and the shielding sliding vane pump.