CN210531163U

CN210531163U - Corrosion-resistant shielding electric pump

Info

Publication number: CN210531163U
Application number: CN201921104844.5U
Authority: CN
Inventors: 常焕良; 靳永强; ***
Original assignee: Dalian Metalworking Intelligent Equipment Technology Co ltd
Current assignee: Dalian Wanwangke Pump Co ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-05-15
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a corrosion-resistant canned motor pump, canned motor pump corrosive fluid is at the cavity inner loop of totally enclosed, and the connection position all adopts static sealing device, and the part that overflows comprises non-metallic material completely, contains engineering plastics, carborundum, carbon fiber material, and various materials independent assortment reach the corrosion-resistant effect to any chemical medium. The shielding sleeve is composed of carbon fibers, fluoroplastics and other non-metallic materials, and can isolate strong corrosive fluid, so that no leakage is achieved, and adverse effects on a motor part and an external environment are avoided. The sliding bearing and the main shaft are made of silicon carbide materials. The pump body is made of fluoroplastic lined with steel, ceramic material or other non-metal material, and is provided with a thrust ring, and the thrust ring is made of silicon carbide and ceramic material. The impeller is made of fluoroplastic, ceramic material or other non-metal materials, and is designed to comprise a metal insert, a balance hole, a sealing ring and a thrust ring, wherein the thrust ring is made of silicon carbide and ceramic material.

Description

Corrosion-resistant shielding electric pump

Technical Field

The utility model relates to a corrosion-resistant no leakage pump field especially relates to a brand-new corrosion-resistant canned motor pump that non-metallic material corrosion resisting property and canned motor pump's no leakage characteristic fused together and formed.

Background

At present, the non-metal centrifugal pump worldwide has excellent corrosion resistance and has the defect of unavoidable leakage, the non-metal magnetic pump solves the problems of corrosion resistance and no leakage, has the defects of incapability of bearing high temperature and high pressure and limitation in specific environment, the metal shield pump has no leakage characteristic and excellent safety performance, and has the defects of corrosion resistance to special corrosive fluids such as strong acid, strong alkali and the like by completely using metal materials. There is no reliable fluid delivery device that addresses the above deficiencies as well.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a corrosion-resistant canned motor pump that the corrosion resisting property of fusing non-metallic pump and canned motor pump's high temperature and high pressure resistant, do not have the leakage, be fit for any resistant corrosive fluid safety and carry.

In order to solve the technical problem, the utility model discloses mainly include the pump body 1, impeller 4, front shroud 12, protecgulum 13, back shroud 19, stator module 14, rotor subassembly 15, front bearing seat 9, back bearing seat 17, slide bearing 10, main shaft 22, casing subassembly 24, frame 25, junction box subassembly, its characterized in that: the pump body 1 is formed by lining fluoroplastic, ceramic or other engineering plastics on a metal shell, and is provided with a pump body orifice ring 2, and the pump body orifice ring 2 is formed by silicon carbide or other ceramic materials and is embedded on a pump body plastic lining; the stator assembly 14 is made of carbon fiber materials and is provided with a stator shielding sleeve 16, and the stator assembly 14, the front cover 13 and the rear bearing seat 17 are integrally formed; the rotor front cover plate 12 is a movable detachable piece; the front bearing seat 9 is made of carbon fiber materials, and a sealing ring 7 is arranged at the joint of the front bearing seat and the impeller 4; a sealing ring 11 is arranged at the joint of the front bearing seat 9 and the front cover 13; a thrust ring 8 and a sliding bearing 10 are embedded on the front bearing seat 9, and the thrust ring 8 and the sliding bearing 10 are made of silicon carbide materials; the sliding bearing 10 is provided with a through hole 30; the impeller 4 is made of fluoroplastic, ceramic or other engineering plastics and is provided with a metal insert 5, and the metal insert 5 is completely coated in the plastic layer; the metal insert 5 is provided with a front thrust ring 3 and a rear thrust ring 6, and the metal insert 5 is made of silicon carbide materials and is embedded on the impeller 4; a sealing ring is arranged at the joint of the metal insert 5 and the front bearing seat 9; the rotor assembly 15 is provided with a rotor shielding sleeve 26, and the rotor shielding sleeve 26 is made of carbon fiber or fluoroplastic and fully covers a rotor metal component; the rear cover plate 19 is provided with a positioning nut 20 made of metal material, the positioning nut 20 is provided with threads matched with the rear cover plate 19 and is provided with a taper matched with the rear bearing seat 17; the main shaft 22 is made of silicon carbide material and penetrates through the whole shaft, and the main shaft 22 is provided with a backflow hole 23 which penetrates through in the axial direction.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the corrosion resistance is excellent, and no leakage exists;

2. can bear high temperature and high pressure;

3. reasonable design, convenience, practicability and simple operation.

Drawings

Fig. 1 is a schematic view of the present invention.

Reference numerals: 1-pump body, 2-pump body opening ring, 3-front thrust ring, 4-impeller, 5-metal insert, 6-rear thrust ring, 7-sealing ring, 8-thrust ring, 9-front bearing seat, 10-sliding bearing, 11-sealing ring, 12-front cover plate, 13-front cover, 14-stator component, 15-rotor component, 16-stator shielding sleeve, 17-rear bearing seat, 18-conical positioning, 19-rear cover plate, 20-positioning nut, 21-dust cover, 22-main shaft, 23-backflow hole, 24-machine shell component, 25-machine base, 26-rotor shielding sleeve, 27-balance hole, 28-impeller nut, 29-backflow hole and 30-through hole.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "inner", "outer", 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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1 the utility model discloses a in the structure sketch, the utility model discloses mainly include the pump body 1, impeller 4, front shroud 12, protecgulum 13, back shroud 19, stator module 14, rotor subassembly 15, front bearing seat 9, back bearing seat 17, slide bearing 10, main shaft 22, casing subassembly 24, frame 25, junction box subassembly, its characterized in that: the pump body 1 is formed by lining fluoroplastic, ceramic or other engineering plastics on a metal shell, and is provided with a pump body orifice ring 2, and the pump body orifice ring 2 is formed by silicon carbide or other ceramic materials and is embedded on a pump body plastic lining; the stator assembly 14 is made of carbon fiber materials and is provided with a stator shielding sleeve 16, and the stator assembly 14, the front cover 13 and the rear bearing seat 17 are integrally formed; the rotor front cover plate 12 is a movable detachable piece; the front bearing seat 9 is made of carbon fiber materials, and a sealing ring 7 is arranged at the joint of the front bearing seat and the impeller 4; a sealing ring 11 is arranged at the joint of the front bearing seat 9 and the front cover 13; a thrust ring 8 and a sliding bearing 10 are embedded on the front bearing seat 9, and the thrust ring 8 and the sliding bearing 10 are made of silicon carbide materials; the sliding bearing 10 is provided with a through hole 30; the impeller 4 is made of fluoroplastic, ceramic or other engineering plastics and is provided with a metal insert 5, and the metal insert 5 is completely coated in the plastic layer; the metal insert 5 is provided with a front thrust ring 3 and a rear thrust ring 6, and the metal insert 5 is made of silicon carbide materials and is embedded on the impeller 4; a sealing ring is arranged at the joint of the metal insert 5 and the front bearing seat 9; the rotor assembly 15 is provided with a rotor shielding sleeve 26, and the rotor shielding sleeve 26 is made of carbon fiber or fluoroplastic and fully covers a rotor metal component; the rear cover plate 19 is provided with a positioning nut 20 made of metal material, the positioning nut 20 is provided with threads matched with the rear cover plate 19 and is provided with a taper matched with the rear bearing seat 17; the main shaft 22 is made of silicon carbide material and penetrates through the whole shaft, and the main shaft 22 is provided with a backflow hole 23 which penetrates through in the axial direction.

Through strict electromagnetic calculation, a stator, a winding and a rotor assembly 15 are manufactured by utilizing the existing mature motor technology, a stator assembly 14 is installed in a machine shell, and a front cover plate and a rear cover plate are welded; the front cover 13, the stator shielding sleeve 16 and the rear bearing seat 17 are formed in one step by using a precision die pressing technology and are installed on the stator; the rotor is wrapped with a non-metallic shielding sleeve by using a precision die pressing technology and is arranged on the main shaft 22; sequentially installing a front bearing seat 9, a sliding bearing 10, an impeller 4 and a locking impeller nut 28, installing a pump body 1 and connecting the pump body to a front cover plate of a machine shell by a connecting bolt; a positioning nut 20 is screwed into the rear cover plate 19, and a dustproof cover 21 is covered;

when the pump runs, the stator coil is electrified, the rotor drives the impeller 4 to rotate like a common motor rotor by using the alternating electromagnetic induction principle, fluid is pressurized by using centrifugal force, and fluid conveying is realized through the pump body 1; the parts in contact with the fluid are all made of non-metallic materials to form a closed cavity, and are all static seals, so that leakage is completely avoided; the ceramic material and the carbon fiber material can resist hundreds of high temperatures; the stator shielding sleeve 16 and the rotor shielding sleeve 26 are made of carbon fiber materials and can resist the pressure of 10 MPa; the front bearing seat 9 and the rear bearing seat 17 made of carbon fiber materials have high strength, high stability and corrosion resistance, and the stability of the sliding bearing 10 is ensured; the sliding bearing 10 and the main shaft 22 use super wear-resistant silicon carbide materials, the abrasion loss is extremely small, and the annual abrasion loss is less than 0.01 mm; the liquid is pressurized by the impeller 4, flows into the gap between the motor stator shielding sleeve 16 and the rotor shielding sleeve 26 through the opening on the front bearing seat 9, flows back to the inlet of the impeller 4 from the inner hole of the main shaft 22 through the sliding bearing 10 to form circulation, and takes away electromagnetic heating and bearing friction heat; the safe transportation of the whole equipment at high temperature, high pressure and any acid-base strong corrosive fluid is realized.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Various modifications and improvements made to the technical solution of the present invention by those skilled in the art are intended to fall within the scope of the present invention as defined in the appended claims. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a corrosion-resistant canned motor pump, mainly includes the pump body, impeller, front shroud, protecgulum, back shroud, stator module, rotor subassembly, front axle bearing, rear axle bearing, slide bearing, main shaft, casing subassembly, frame, terminal box subassembly, its characterized in that: the pump body is made of fluoroplastic or ceramic lined on a metal shell, a pump body mouth ring is designed on the pump body, and the pump body mouth ring is made of silicon carbide or ceramic material and is embedded on a pump body plastic lining; the stator assembly is made of carbon fiber materials and is provided with a stator shielding sleeve, and the stator assembly, the front cover and the rear bearing seat are designed into an integrated structure; the rotor front cover plate is a movable detachable part; the front bearing seat is made of carbon fiber materials, and a sealing ring is arranged at the joint of the front bearing seat and the impeller; a sealing ring is arranged at the joint of the front bearing seat and the front cover; a thrust ring and a sliding bearing are embedded on the front bearing seat, and the thrust ring and the sliding bearing are made of silicon carbide materials; the sliding bearing is provided with a through hole; the impeller is made of fluoroplastic or ceramic and is provided with a metal insert, and the metal insert is completely coated in the plastic layer; the metal insert is provided with a front thrust ring and a rear thrust ring, and is made of a silicon carbide material and is embedded on the impeller; a sealing ring is arranged at the joint of the metal insert and the front bearing seat; the rotor assembly is provided with a rotor shielding sleeve, and the rotor shielding sleeve is made of carbon fiber or fluoroplastic and fully covers a rotor metal component; the rear cover plate is provided with a positioning nut made of metal materials, the positioning nut is provided with threads matched with the rear cover plate, and is provided with a taper matched with the rear bearing seat; the main shaft is made of silicon carbide materials and is provided with a backflow hole which is axially communicated.