CN210484098U

CN210484098U - Hollow pump

Info

Publication number: CN210484098U
Application number: CN201921434637.6U
Authority: CN
Inventors: 李文义; 李克荣; 邵环宇
Original assignee: Xuzhou University of Technology
Current assignee: Xuzhou University of Technology
Priority date: 2019-08-31
Filing date: 2019-08-31
Publication date: 2020-05-08
Anticipated expiration: 2029-08-31

Abstract

A novel hollow pump is characterized in that a pump body consists of a front pump body and a rear pump body which are provided with axial cavities; the outer edge part of the stator is respectively and fixedly connected between the front pump body and the rear pump body, the inner edge part of the stator is respectively provided with annular concave parts at the front end part and the rear end part of the inner edge part of the stator, and two annular grooves A are formed between the two annular concave parts and the front pump body and between the two annular concave parts and the rear pump body; windings are arranged in the annular grooves A; the rotor is rotatably assembled on the inner side of the stator, a boss on the outer edge surface of the rotor extends into a space between the front pump body and the rear pump body and is in clearance fit with the stator, a plurality of blades are uniformly arranged in the inner cavity of the rotor in the circumferential direction, and overflowing channels are reserved between the inner ends of the blades; the opposite sides of the front and rear pump bodies are provided with annular concave platforms A and B, the extension parts A and B at the front and rear ends of the inner edge surface part of the rotor are respectively matched with the concave platforms A and B, and the extension parts and the concave platforms are connected through bearings and sealing elements. The hollow pump has the advantages of simple structure, low manufacturing cost and convenient maintenance.

Description

Hollow pump

Technical Field

The utility model relates to a novel hollow pump.

Background

The pump body and the motor of the through-flow pump body are of a coaxial structure, so that hydraulic loss is low when water is pumped, water pumping efficiency is high, the structure is compact, installation is convenient, and the through-flow pump body is widely favored by users. However, the through-flow pump body in the prior art has a complex structure, so that the manufacturing cost is high, and meanwhile, the difficulty of overhauling and maintaining is increased.

Disclosure of Invention

To the problem that above-mentioned prior art exists, the utility model provides a novel hollow pump, this hollow pump simple structure, low in manufacturing cost, and convenient to overhaul and maintain.

The utility model provides a novel hollow pump, which comprises a stator, a rotor and a pump body, wherein the pump body is composed of a front pump body and a rear pump body with axial cavities, and the outer diameter and the inner diameter of one end of the front pump body and the rear pump body which are matched;

the stator is of an annular hollow structure, the front end and the rear end of the outer edge part of the stator are fixedly connected with the rear end face of the front pump body and the outer edge part of the front end face of the rear pump body respectively, annular concave parts are formed in the front end and the rear end of the inner edge part of the stator respectively, and two annular grooves A are formed between the two annular concave parts and the rear end face of the front pump body and the front end face of the rear pump body respectively; annular windings are arranged in the two annular grooves A;

the rotor is of an annular hollow structure and can be rotatably assembled on the inner side of the stator, one side of the outer edge surface of the rotor is provided with an annular boss protruding outwards, the annular boss extends into a space between the front pump body and the rear pump body, the outer circular surface of the annular boss is in clearance fit with the inner circular surface of the stator, a plurality of blades with set torsion degree are uniformly arranged in the inner cavity of the rotor in the circumferential direction, the blades are arranged in a staggered mode, the outer ends of the blades are fixedly connected with the inner side wall of the rotor, and an overflowing channel located at the axis center of the rotor is reserved between the inner ends of the blades;

the inner side of the rear end of the front pump body is provided with an annular concave platform A, the inner side of the front end of the rear pump body is provided with an annular concave platform B, the front end and the rear end of the inner edge surface part of the rotor are respectively provided with an extension part A and an extension part B which are matched with the concave platform A and the concave platform B, and the extension part A and the concave platform A are connected through a bearing A and sealed through a sealing part A; the extension part B and the concave platform B are connected through a bearing B and sealed through a sealing part B;

the rear end face of the front pump body and the front end face of the rear pump body are provided with a pair of annular grooves B which are oppositely arranged, a pair of annular convex strips are arranged on the outer sides of the front end face and the rear end face of the stator, and the pair of annular convex strips are respectively inserted into the pair of annular grooves B in a limiting mode.

Further, in order to ensure that the extension part A and the extension part B of the rotor can be stably connected and matched with the front pump body and the rear pump body, the concave platform A and the concave platform B are stepped concave platforms.

Preferably, the winding is a high-insulation-strength double-layer co-melting co-extrusion waterproof winding.

The utility model discloses a make the pump body constitute by the preceding pump body and the back pump body of components of a whole that can function independently to make the stator set up in the front between the pump body and the back pump body, enable the holistic structure of hollow pump compacter, also enable holistic structure simpler, in order to facilitate the maintenance and safeguard. The rotor is coaxially assembled in the inner cavity of the stator, and the extending parts at the front end and the rear end of the rotor are respectively matched with the front pump body and the rear pump body, so that the integral structure is more compact, and the rotor can be stably matched with the front pump body and the rear pump body in the rotating process. A sealing element A and a sealing element B are respectively arranged between the extension parts at the front end and the rear end of the rotor and the front pump body and between the extension parts and the rear pump body, so that good sealing performance between the rotor and the pump body and between the rotor and the stator in the rotation process can be guaranteed, and a good waterproof effect can be achieved. The inside of rotor is provided with a plurality of blades, and leaves the passageway that overflows that supplies rivers to pass through between the inner of a plurality of blades, can realize the water pumping and supply operation conveniently high-efficiently. The resistance that water passes through can effectively be reduced in the axle center department of rotor through the setting of overflowing the passageway, and then can realize efficient pumping operation. In addition, in the working process, water can pass through the cavity in the rotor, so that the rotor can be cooled, and the water can also indirectly act on the winding to cool the winding.

Drawings

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

In the figure: 1. stator, 2, rotor, 3, front pump body, 4, rear pump body, 5, annular recess, 6, annular groove a,7, winding, 8, annular boss, 9, vane, 10, boss a, 11, boss B, 12, extension a, 13, extension B, 14, bearing a, 15, bearing B, 16, seal a, 17, seal B, 18, annular groove B, 19, annular rib.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, a novel hollow pump comprises a stator 1, a rotor 2 and a pump body, wherein the pump body is composed of a front pump body 3 and a rear pump body 4 with axial cavities, and the outer diameter and the inner diameter of one end, matched with the front pump body 3 and the rear pump body 4, of the pump body are matched with each other and are coaxially matched with each other;

the stator 1 is of an annular hollow structure, the stator 1 is coaxially matched with the front pump body 3 and the rear pump body 4, the front end and the rear end of the outer edge part of the stator 1 are fixedly connected with the rear end face of the front pump body 3 and the outer edge part of the front end face of the rear pump body 4 respectively, preferably, sealing rings can be arranged at the joints of the stator 1 and the front pump body 3 and the rear pump body 4 respectively to ensure that the stator 1 can be connected with the front pump body 3 and the rear pump body 4 in a sealing manner, so that the joints can achieve a good waterproof effect, annular concave parts 5 are arranged at the front end and the rear end of the inner edge part of the stator 1 respectively, and two annular grooves A6 are formed between the two annular concave parts 5 and the rear end face of the front pump body 3 and the front end; the two annular grooves A6 are respectively provided with an annular winding 7, preferably, a waterproof cable connected with the winding 7 passes through the stator 1 and then extends to the outside so as to be connected with an external power supply, a waterproof sealing element is arranged at the part of the waterproof cable passing through the stator 1 so as to achieve a good waterproof effect, specifically, a wire passing hole communicated with the annular groove A6 can be arranged at the end part of the stator 1, and a waterproof sealing gasket is arranged in the wire passing hole so as to realize good sealing between the waterproof cable and the wire passing hole;

the rotor 2 is in an annular hollow structure and can be rotatably assembled at the inner side of the stator 1, the rotor 2 is coaxially matched with the stator 1, preferably, the inner diameter of the rotor 2 is consistent with the inner diameters of the front pump body 3 and the rear pump body 4, one side of the outer edge surface of the rotor 2 is provided with an annular boss 8 protruding outwards, the annular boss 8 extends into a space between the front pump body 3 and the rear pump body 4, the outer circular surface of the annular boss is in clearance fit with the inner circular surface of the stator 1, a plurality of blades 9 with set torsion degree are uniformly arranged in the inner cavity of the rotor 2 in the circumferential direction, the plurality of blades 9 are arranged in a staggered mode, the outer ends of the blades are fixedly connected with the inner side wall of the rotor 2, a flow passage located at the axis of the rotor 2 is reserved between the inner ends of the blades, the plurality of blades 9 can extract a water source at a water inlet at the rear end of the rear pump body 4 in the rotating process of, and then is supplied out through a water outlet at the front end of the front pump body 3. The setting of overflowing the passageway can effectively reduce the resistance that water passes through in the axle center department of rotor 2, and then can realize efficient pumping operation.

An annular concave platform A10 is formed in the inner side of the rear end of the front pump body 3, an annular concave platform B11 is formed in the inner side of the front end of the rear pump body 4, the front end and the rear end of the inner edge surface of the rotor 2 are respectively provided with an extension A12 and an extension B13 which are matched with the concave platform A10 and the concave platform B11, the extension A12 and the concave platform A10 are connected through a bearing A14 and sealed through a sealing element A16, so that the extension A12 and the concave platform A10 can be connected in a sealing mode, and a good waterproof effect can be achieved; the extension part B13 and the concave platform B11 are connected through a bearing B15 and sealed through a sealing member B17, so that the extension part B13 and the concave platform B11 can be connected in a sealing mode, and a good waterproof effect can be achieved; and further, the rotor 2 and the front pump body 3 and the rear pump body 4 have good waterproof effect.

A pair of annular grooves B18 which are oppositely arranged are formed in the rear end face of the front pump body 3 and the front end face of the rear pump body 4, a pair of annular convex strips 19 are arranged on the outer sides of the front end face and the rear end face of the stator 1, and the pair of annular convex strips 19 are respectively limited and inserted into the pair of annular grooves B18. Under the condition of ensuring the connection strength, the sealing effect can be further improved.

In order to ensure that the extensions a and B of the rotor can be stably connected and engaged with the front and rear pump bodies, the recess a10 and the recess B11 are stepped recesses.

Preferably, the winding 7 is a high-insulation-strength double-layer co-melting co-extrusion waterproof winding.

Claims

1. A novel hollow pump comprises a stator (1), a rotor (2) and a pump body, wherein the pump body is composed of a front pump body (3) and a rear pump body (4) which are provided with axial cavities, and is characterized in that the outer diameter and the inner diameter of one end, matched with the front pump body (3) and the rear pump body (4), are matched;

the stator (1) is of an annular hollow structure, the front end and the rear end of the outer edge part of the stator (1) are fixedly connected with the rear end face of the front pump body (3) and the outer edge part of the front end face of the rear pump body (4) respectively, annular concave parts (5) are formed in the front end part and the rear end part of the inner edge part of the stator (1) respectively, and two annular grooves A (6) are formed between the two annular concave parts (5) and the rear end face of the front pump body (3) and the front end face of the rear pump body (4) respectively; annular windings (7) are arranged in the two annular grooves A (6);

the rotor (2) is of an annular hollow structure and can be rotatably assembled on the inner side of the stator (1), one side of the outer edge surface of the rotor (2) is provided with an annular boss (8) protruding outwards, the annular boss (8) extends into a position between the front pump body (3) and the rear pump body (4), the outer circular surface of the annular boss is in clearance fit with the inner circular surface of the stator (1), a plurality of blades (9) with set torsion degree are uniformly arranged in the inner cavity of the rotor (2) in the circumferential direction, the blades (9) are arranged in a staggered mode, the outer ends of the blades are fixedly connected with the inner side wall of the rotor (2), and an overflowing channel located at the axis of the rotor (2) is reserved between the inner ends of the blades;

an annular concave platform A (10) is formed in the inner side of the rear end of the front pump body (3), an annular concave platform B (11) is formed in the inner side of the front end of the rear pump body (4), an extension portion A (12) and an extension portion B (13) which are matched with the concave platform A (10) and the concave platform B (11) are respectively arranged at the front end and the rear end of the inner edge surface portion of the rotor (2), and the extension portion A (12) and the concave platform A (10) are connected through a bearing A (14) and sealed through a sealing element A (16); the extension B (13) and the concave B (11) are connected through a bearing B (15) and sealed through a sealing member B (17).

2. The novel hollow pump as claimed in claim 1, wherein a pair of annular grooves B (18) are formed in the rear end face of the front pump body (3) and the front end face of the rear pump body (4) in an opposite manner, a pair of annular protruding strips (19) are formed on the outer sides of the front end face and the rear end face of the stator (1), and the pair of annular protruding strips (19) are respectively inserted into the pair of annular grooves B (18) in a limiting manner.

3. A new hollow pump according to claim 1 or 2, characterized in that both the land a (10) and the land B (11) are stepped lands.

4. A novel air-core pump as claimed in claim 1 or 2, characterized in that the winding (7) is a high dielectric strength double layer co-melt co-extrusion water-resistant winding.