CN216554449U

CN216554449U - Internal supporting structure for magnetic pump

Info

Publication number: CN216554449U
Application number: CN202122658410.3U
Authority: CN
Inventors: 董落成; 欧瑞阳; 朱承孝
Original assignee: Nanjing Advanced Fluid Management Co ltd
Current assignee: Nanjing Advanced Fluid Management Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-05-17
Anticipated expiration: 2031-11-02

Abstract

The utility model relates to the technical field of magnetic pumps, in particular to an internal supporting structure for a magnetic pump, which comprises a volute, an isolation sleeve and an impeller assembly, wherein a front end positioning counter bore is arranged in the volute, a tail end positioning counter bore is arranged at the tail part of the isolation sleeve, the tail part of the volute is fixedly connected with the front end of the isolation sleeve to form a hollow cavity, the pump shaft is positioned in the hollow cavity, one end of the pump shaft is inserted into the front end positioning counter bore, the other end of the pump shaft is inserted into the tail end positioning counter bore, and the impeller assembly is positioned in the hollow cavity and is arranged on the outer side of the pump shaft in a penetrating manner.

Description

Internal supporting structure for magnetic pump

Technical Field

The utility model relates to the technical field of magnetic pumps, in particular to an internal supporting structure for a magnetic pump.

Background

In the field of domestic chemical equipment, an internal support structure assembly for a magnetic pump is a stable support structure for a fluorine lining pump impeller when the fluorine lining pump impeller rotates at a high speed. The working principle of the fluorine lining magnetic pump is that an outer magnetic rotor and an inner magnetic rotor are matched with each other, and the inner magnetic rotor is connected with a fluorine lining impeller together. When the outer magnetic rotor rotates, the inner magnetic rotor is driven to synchronously rotate, so that the fluorine-lined impeller is driven to rotate together to convey media such as liquid. The fluorine-lined magnetic pump is mainly characterized in that the rotating impeller is stably supported, one end of a silicon carbide pump shaft is inserted into the central position of the tail of the isolation sleeve, the other end of the silicon carbide pump shaft is not fixed, and the silicon carbide pump shaft directly penetrates through an inner hole of the fluorine-lined impeller to support a fluorine-lined impeller assembly. When the structure with one end supporting the fluorine-lined impeller assembly is used in the high-speed running process of a pump, the fluorine-lined impeller assembly swings greatly, so that the risk of abrasion of the fluorine-lined impeller assembly is increased, the silicon carbide pump shaft is easy to break, and once the internal supporting structure of the fluorine-lined magnetic pump is damaged, other internal structural components of the pump are damaged to cause leakage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an internal support structure for a magnetic pump, which aims to solve the problems that in the prior art, the impeller assembly swings greatly and is easy to wear and the pump shaft is easy to break when a structure supporting the impeller assembly at one end rotates at a high speed.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an inside bearing structure for magnetic drive pump, includes spiral case, separation sleeve and impeller subassembly, the inside front end location counter bore that is equipped with of spiral case, the separation sleeve afterbody is equipped with tail end location counter bore, the cavity is formed with to spiral case afterbody and separation sleeve front end fixed connection, the pump shaft is located the cavity intracavity, the front end location counter bore is inserted to the one end of pump shaft, the tail end location counter bore is inserted to the other end of pump shaft, the impeller subassembly is located the cavity intracavity and wear the outside at the pump shaft.

Preferably, the impeller assembly is of an integrated structure, and a bearing is arranged inside the impeller assembly and is mounted on the outer side of the pump shaft.

Preferably, an outer magnetic rotor is installed on the outer side of the isolation sleeve and attracted with the impeller assembly in the hollow cavity.

Preferably, a support is arranged on the outer layer of the outer magnetic rotor, one end of the support props against the isolation sleeve and is connected with the volute, the other end of the support is connected with a bearing seat, and the front end of the bearing seat extends into a space between the outer magnetic rotor and the support to support the outer magnetic rotor.

Preferably, a triangular support structure is arranged inside the volute, and the center of the triangular support structure is provided with the front end positioning counter bore.

Compared with the prior art, the utility model has the beneficial effects that: the two ends of the pump shaft are fixedly supported, so that the impeller assembly is more stably supported, the pump shaft is not easy to break, the risk of unbalance of the impeller is greatly reduced, and the service life of the pump shaft is prolonged; the impeller assembly is of an integrated structure, so that the long-time operation is more stable, and the possibility of impeller looseness caused by a split structure is avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the installation of the present invention.

In the figure: 1 volute, 2 impeller subassembly, 3 bearings, 4 pump shafts, 5 spacer bushes, 6 outer magnetic rotors, 7 supports, 8 bearing blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: an internal supporting structure for a magnetic pump comprises a volute 1, a spacer sleeve 5 and an impeller assembly 2, wherein the volute 1 is a fluorine-lined volute, the impeller assembly 2 is a fluorine-lined impeller assembly, a triangular supporting structure is arranged inside the volute 1, a front end positioning counter bore is formed in the center of the triangular supporting structure, a tail end positioning counter bore is formed in the tail of the spacer sleeve 5, the tail of the volute 1 is fixedly connected with the front end of the spacer sleeve 5 to form a hollow cavity, a pump shaft 4 is positioned in the hollow cavity, the pump shaft 4 is a silicon carbide pump shaft, one end of the pump shaft 4 is inserted into the front end positioning counter bore, the other end of the pump shaft 4 is inserted into the tail end positioning counter bore, the impeller assembly 2 is positioned in the hollow cavity and is arranged on the outer side of the pump shaft 4 in a penetrating manner, so that both ends of the pump shaft 4 are fixed, the impeller assembly 2 is supported more stably, the pump shaft 4 is not easy to break, the risk of unbalance of the impeller is greatly reduced, and the service life of the pump shaft 4 is prolonged.

Preferably, impeller subassembly 2 formula structure as an organic whole, impeller subassembly 2 is inside to have bearing 3, and bearing 3 also is the carborundum bearing, and bearing 3 installs in the pump shaft 4 outside, and the impeller subassembly 2 of formula structure can long-time even running, has avoided the not hard up possibility of impeller that split type structure brought.

Specifically, an outer magnetic rotor 6 is installed on the outer side of the isolation sleeve 5, the outer magnetic rotor 6 is attracted with the impeller assembly 2 in the hollow cavity, the impeller assembly 2 can be driven to rotate around the pump shaft 4 when the outer magnetic rotor 6 rotates, a support 7 is arranged on the outer layer of the outer magnetic rotor 6, one end of the support 7 abuts against the isolation sleeve 5 and is connected with the volute 1, the other end of the support 7 is connected with a bearing seat 8, and the front end of the bearing seat 8 extends into a position between the outer magnetic rotor 6 and the support 7 to support the outer magnetic rotor 6.

In the application, the two ends of the pump shaft 4 are fixed, so that the impeller component 2 is more stably supported, and the risk of unbalance of the impeller is greatly reduced; in addition, the impeller component 2 adopts an integrated structure, so that the long-time operation is more stable, and the possibility of impeller looseness caused by a split structure is avoided.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an inside bearing structure for magnetic drive pump, includes spiral case (1), spacer sleeve (5) and impeller subassembly (2), its characterized in that: the utility model discloses a pump, including spiral case (1), spacer sleeve (5), front end location counter bore, volute (1) afterbody and spacer sleeve (5) front end fixed connection form well cavity, and pump shaft (4) are located the cavity intracavity, the front end location counter bore is inserted to the one end of pump shaft (4), the tail end location counter bore is inserted to the other end of pump shaft (4), impeller subassembly (2) are located the cavity intracavity is worn the dress in the outside of pump shaft (4).

2. The internal support structure for a magnetic pump of claim 1, wherein: the impeller component (2) is of an integrated structure, a bearing (3) is arranged inside the impeller component (2), and the bearing (3) is installed on the outer side of the pump shaft (4).

3. The internal support structure for a magnetic pump of claim 1, wherein: an outer magnetic rotor (6) is installed on the outer side of the isolation sleeve (5), and the outer magnetic rotor (6) is attracted with the impeller assembly (2) in the hollow cavity.

4. The internal support structure for a magnetic pump of claim 3, wherein: the outer layer of the outer magnetic rotor (6) is provided with a support (7), one end of the support (7) props against the isolation sleeve (5) and is connected with the volute (1), the other end of the support (7) is connected with a bearing seat (8), and the front end of the bearing seat (8) extends into a space between the outer magnetic rotor (6) and the support (7) to support the outer magnetic rotor (6).

5. The internal support structure for a magnetic pump of claim 1, wherein: a triangular supporting structure is arranged inside the volute (1), and the center of the triangular supporting structure is provided with the front end positioning counter bore.