CN106351850B

CN106351850B - Simple structure's axial-flow pump that does not leak

Info

Publication number: CN106351850B
Application number: CN201610804146.0A
Authority: CN
Inventors: 刘荣甫; 高春凤
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-08-28
Filing date: 2016-08-28
Publication date: 2021-07-20
Anticipated expiration: 2036-08-28
Also published as: CN106351850A

Abstract

The utility model provides a simple structure's axial-flow pump that does not leak, characterized by: axial flow impeller designs in the inside of rotor ring, the impeller rotor body has been constituteed, the volume of this impeller rotor body is only equivalent to the volume of ordinary rotor, wholly pack into the inside of separation sleeve, separation sleeve repacking advances the inside of stator solenoid, save the rotor part of canned motor pump, the outer magnet and the motor rotor of magnetic drive pump have also been saved, make the structure simplify, the volume also reduces, and can also reduce the magnetic resistance, both ends are packed respectively in left side axle sleeve and the right side axle sleeve about the center pin, both ends are confined, do not expose the pump body.

Description

Simple structure's axial-flow pump that does not leak

Technical Field

The invention relates to the field of machinery, in particular to a leakage-free axial flow pump with a simple structure.

Background

The conventional non-leakage pump mainly comprises a shield pump and a magnetic pump, and the leakage of the centrifugal pump is caused by the fact that a pump shaft connected with an impeller extends out of a pump body, so that the pump shaft can be connected with a motor shaft and is driven by the motor; however, the impeller shaft is rotating and the pump body is stationary, the impeller shaft must be in a gap with the pump body, otherwise the pump shaft cannot rotate, and no matter how delicate the pump shaft is, gas or liquid will always escape from the side of the rotating shaft. To this end, high-performance mechanical seals have been developed which do achieve a certain effect, but they are also driven by a rotating shaft to a pump, which necessarily has gaps in the rotating part, and the delicate mechanical seals also always have gas or liquid escaping from the rotating friction surface. Therefore, the canned motor pump is developed, but the shape of the isolation sleeve of the canned motor pump is bent at multiple positions, so that the cost is increased, the strength is weakened, the strength requirement is higher when the bending is more, in addition, all gaps in the bent large-area isolation sleeve are filled with liquid, so that the friction force is increased, and the manufacturing is finished by large-scale stamping equipment.

The magnetic force driving pump is relatively simple to manufacture, the motor can adopt a finished product, the motor drives the external magnetic steel to rotate to generate a rotating magnetic field, the rotating magnetic field penetrates through the isolation sleeve and then drives the internal magnetic steel to rotate, and the internal magnetic steel drives the impeller of the pump to do work, so that the magnetic force driving pump is provided with one-level rotating facilities more than a shielding pump, namely a set of rotating external magnets is added, the magnetic force loss is increased inevitably, and namely a set of external magnetic rotors are added outside the isolation sleeve; when the motor runs, the rotor of the motor drives the outer magnetic rotor to rotate when rotating, the magnetic line of force of the outer magnetic rotor penetrates through the isolation sleeve and then drives the inner magnetic rotor inside the isolation sleeve to synchronously rotate, and the inner magnetic rotor drives the impeller to rotate to apply work, so that the volume is increased inevitably, and the cost is increased; in addition, the outer magnetic rotor generates centrifugal force during rotation, so that the whole pump body can vibrate, and the damage and the service life are reduced.

Disclosure of Invention

The invention aims to provide a leakage-free axial-flow pump with a simple structure, overcomes the defects in the prior art, reduces the cost and the volume, and simultaneously improves the efficiency.

The technical scheme adopted by the invention for solving the technical problem is as follows: 1. the centrifugal pump comprises a left side end cover body, 2 a left side shaft sleeve support, 3 a left side shaft sleeve, 4 a water inlet, 5 a central shaft, 6 an axial flow impeller, 7 a rotor ring, 8 a stator coil, 9 an isolation sleeve, 10 a right side end cover body, 11 a right side shaft sleeve support, 12 a right side shaft sleeve, 13 a water outlet, 14 a shell and 15 a base; the method is characterized in that: the axial-flow impeller 6 is designed in the rotor ring 7 to form an impeller rotor body, the volume of the impeller rotor body is only equal to that of a common rotor, the impeller rotor body is integrally installed in the isolating sleeve 9, the isolating sleeve 9 is installed in the stator coil package 8, the rotor part of a canned motor pump is omitted, the external magnetic steel and the motor rotor of a magnetic force drive pump are also omitted, the structure is simplified, the volume is reduced, and the magnetic resistance can be reduced. The left end and the right end of the central shaft 5 are respectively arranged in the left shaft sleeve 3 and the right shaft sleeve 12, and the two ends are closed and do not expose out of the pump body; in order to realize the purpose, a left shaft sleeve 3 is required to be fixed on a left shaft sleeve support 2, the left shaft sleeve support 2 is fixed with a left end cover 1, a central shaft 5 is fixed in an axial-flow impeller 6, a right shaft sleeve 12 is fixed on a right shaft sleeve support 11, and the right shaft sleeve support 11 is fixed with a right end cover body 10 to form the left side of the pump body; the stator coil 8 is wrapped by the shell 14 and fixed on the base 15 to form the whole body of the invention.

The isolation sleeve 9 is positioned in the middle of the pump body and is characterized in that the isolation sleeve is integrally manufactured with a right end cover body 10, and a right shaft sleeve 12 and a right shaft sleeve bracket 11 are fixed on the integral to form a structure shown in fig. 5; the right side of the whole body is provided with a water outlet 13, the left side of the whole body is provided with an open isolation sleeve 9, the whole body consisting of the rotor ring 7 and the axial flow impeller 6 is arranged in the whole body through the left side open isolation sleeve 9, the left side end cover body 1 and the left side open isolation sleeve 9 are fixedly combined into a pump body through a flange, and the combined pump body is inserted into the stator coil 8 to form the product of the invention.

The left side shaft sleeve 3 and the right side shaft sleeve 12 can be of a bearing structure, and can also be made of materials with small friction force.

The rotor ring 7 can be made of permanent magnetic material or an asynchronous magnetic field made of iron cores, and the edge of one side of the water inlet of the axial flow impeller 6 is a curve with an outward extending axis as seen in the attached drawing.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a sectional structural view of the present invention.

Fig. 2 is a side sectional view of the present invention.

Fig. 3 is a front and side projection view of the axial flow impeller and the center shaft of the present invention.

FIG. 4 is a front and side perspective view of the axial flow impeller and rotor ring combination of the present invention.

Fig. 5 is a cross-sectional view of the left end cap, left hub and bracket combination of the present invention.

Fig. 6 is a cross-sectional view of the spacer of the present invention in combination with a right end cap, a right bushing and a bracket therefor.

Fig. 7 is a cross-sectional view of the pump body of the present invention except for the stator coil 8.

In the figure: 1. the centrifugal pump comprises a left side end cover body, 2 a left side shaft sleeve support, 3 a left side shaft sleeve, 4 a water inlet, 5 a central shaft, 6 an axial flow impeller, 7 a rotor ring, 8 a stator coil, 9 an isolation sleeve, 10 a right side end cover body, 11 a right side shaft sleeve support, 12 a right side shaft sleeve, 13 a water outlet, 14 a shell and 15 a base;

Detailed Description

When the water pump runs, the stator coil 8 generates a rotating magnetic field after being electrified, the rotating magnetic field penetrates through the isolation sleeve 9 of the pump and directly acts on the combination body of the axial flow impeller 6 and the rotor ring 7, so that the rotor ring 7 and the impeller rotate together, and the rotating axial flow impeller 6 sends water at the water inlet 4 to one side of the water outlet 13 to complete acting.

Claims

1. The utility model provides a simple structure's axial-flow pump that does not leak, characterized by: the axial flow impeller (6) is designed in the rotor ring (7) to form an impeller rotor body, the impeller rotor body is arranged in the isolating sleeve (9), and the isolating sleeve (9) is arranged in the stator coil (8); the left end and the right end of a central shaft (5) are respectively arranged in a left shaft sleeve (3) and a right shaft sleeve (12), the two ends of the central shaft are closed and do not expose out of a pump body, the left shaft sleeve (3) is fixed on a left shaft sleeve support (2), the left shaft sleeve support (2) is fixed with a left end cover (1), the central shaft (5) is fixed in an axial flow impeller (6), the right shaft sleeve (12) is fixed on a right shaft sleeve support (11), and the right shaft sleeve support (11) is fixed with a right end cover (10); the isolation sleeve (9) is positioned in the middle of the pump body and integrated with the right end cover (10), meanwhile, the right shaft sleeve (12) and the right shaft sleeve support (11) are fixed on the whole, the right side of the whole is provided with the water outlet (13), the left side is provided with the open isolation sleeve (9), an impeller rotor body consisting of a rotor ring (7) and an axial flow impeller (6) is arranged in the whole through the left open isolation sleeve (9), the left end cover (1) and the left open isolation sleeve (9) are fixedly combined into the pump body through flanges, and the pump body is inserted into the stator coil (8); the rotor ring (7) is made of permanent magnet materials or made of iron cores into asynchronous magnetic fields; the edge of one side of the water inlet of the axial flow impeller (6) is a curve extending outwards along the axis; when the axial-flow impeller is in operation, the stator coil (8) generates a rotating magnetic field after being electrified, and the rotating magnetic field penetrates through the isolation sleeve (9) of the pump and acts on the impeller rotor body composed of the axial-flow impeller (6) and the rotor ring (7), so that the rotor ring (7) and the axial-flow impeller (6) rotate together.

2. A structurally simple, leak-free axial flow pump according to claim 1, characterized in that: the left side shaft sleeve (3) and the right side shaft sleeve (12) are bearing structures or shaft sleeves.