CN220415768U

CN220415768U - Axial force energy-saving balance mechanism of pump

Info

Publication number: CN220415768U
Application number: CN202322121224.5U
Authority: CN
Inventors: 彭念兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-08-08
Filing date: 2023-08-08
Publication date: 2024-01-30
Anticipated expiration: 2033-08-08

Abstract

The utility model relates to the technical field of water pumps, and particularly discloses an axial force energy-saving balance mechanism of a pump, which comprises a pump body, wherein a pump chamber, a sealing chamber and a balance chamber are arranged on the pump body; a balance ring and a balance disc are arranged in the balance chamber, a balance cavity is formed on the balance ring and the balance disc, and a balance hole communicated with the balance cavity is formed in the seal chamber; the pump body is provided with a liquid inlet communicated with the sealing chamber, and the liquid inlet can be externally connected with a volumetric pump; the pump body is also provided with a liquid discharge hole communicated with the balance chamber; through mechanical seal, can make between pump cavity and the seal chamber by mechanical seal completely leak-free, can avoid the rivers in the pump cavity to leak out and cause the waste, and the energy-conserving effect is showing promptly, and especially middle-large-scale water pump is outstanding.

Description

Axial force energy-saving balance mechanism of pump

Technical Field

The utility model relates to the technical field of water pumps, in particular to an axial force energy-saving balancing mechanism of a pump.

Background

The water pump is a liquid lifting device, which in operation acts on the rotor with an axial force which will pull the rotor axially, and therefore it is necessary to try to cancel or balance this axial force. At present, the method for balancing the axial force mainly comprises a back vane, a balancing disc, a balancing drum and the like, wherein the main balancing mode is shown in fig. 1, liquid directly enters a balancing chamber from a pump chamber through a gap between a pump body and a rotor, pushes away the balancing disc between the balancing disc and a balancing ring, enters the balancing chamber, directly flows out of the pump through a pressure relief hole or is connected into a water inlet through a pipeline, 3% -8% of flow loss exists, and in order to prevent or reduce the loss of the water flow, the axial force energy-saving balancing mechanism of the pump is provided.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the axial force energy-saving balancing mechanism of the pump, which has the advantages of stopping or reducing water flow, thereby achieving the effect of saving energy by saving water and solving the problems of the background technology.

The axial force energy-saving balancing mechanism of the pump comprises a pump body, wherein a pump chamber, a sealing chamber and a balancing chamber are arranged on the pump body, the sealing chamber is positioned between the pump chamber and the balancing chamber, the pump chamber is provided with a rotor, the rotor penetrates through the sealing chamber and then enters the balancing chamber, a mechanical seal for sealing is arranged in the sealing chamber, the mechanical seal is arranged on the surface of the rotor, and the top and the bottom of the mechanical seal are respectively arranged at the top and the bottom of the sealing chamber;

a balance ring and a balance disc are arranged in the balance chamber, a balance cavity is formed on the balance ring and the balance disc, and a balance hole communicated with the balance cavity is formed in the seal chamber;

the pump body is provided with a liquid inlet communicated with the sealing chamber, and the liquid inlet can be externally connected with a volumetric pump;

the pump body is also provided with a liquid discharge hole communicated with the balance chamber.

As a further improvement of the utility model, the mechanical seal is a double-ended mechanical seal.

As a further improvement of the utility model, a framework oil seal is arranged between the balance disc and the pump body.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model can ensure that the pump chamber and the sealing chamber are sealed by the mechanical seal completely without leakage by the mechanical seal arranged in the sealing chamber between the balance chamber and the pump chamber, namely, the waste caused by water flow leakage in the pump chamber can be avoided, namely, the energy-saving effect is obvious, and particularly, the middle-sized and large-sized water pump is outstanding; the balance force of the balance disc is used for providing balance liquid to the sealing chamber through an external low-power volumetric pump, so that a liquid film is formed between the balance disc and the balance ring to keep an axial force balance state.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is a schematic illustration of a front cross-sectional structure of a conventional pump body;

fig. 2 is a schematic diagram of the front cross-section structure of the present utility model.

In the figure: 1. a pump body; 2. a rotor; 3. a balance hole; 4. a balance ring; 5. a balancing disk; 6. a pressure relief hole; 7. mechanical sealing; 8. a liquid inlet hole; 9. a balancing chamber; 10. a sealed chamber; 11. a liquid discharge hole; 12. a pump chamber; 13. balance the cavity.

Detailed Description

Various embodiments of the present utility model are disclosed in the following drawings, in which details are set forth in the following description for the sake of clarity. However, it should be understood that these physical details should not be used to limit the utility model. That is, in some embodiments of the present utility model, these physical details are not necessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.

In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the utility model solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 2, the axial force energy-saving balancing mechanism of the pump of the present utility model comprises a pump body 1, wherein a pump chamber 12, a sealing chamber 10 and a balancing chamber 9 are arranged on the pump body 1, the sealing chamber 10 is positioned between the pump chamber 12 and the balancing chamber 9, the pump chamber 12 is provided with a rotor 2, the rotor 2 penetrates through the sealing chamber 10 and then enters the balancing chamber 9, a mechanical seal 7 for sealing is arranged in the sealing chamber 10, the mechanical seal 7 is arranged on the surface of the rotor 2, and the top and the bottom of the mechanical seal 7 are respectively arranged at the top and the bottom of the sealing chamber 10;

the balance ring 4 and the balance disc 5 are arranged in the balance chamber 9, the balance ring 4 and the balance disc 5 are provided with a balance cavity 13, and the seal chamber 10 is provided with a balance hole 3 communicated with the balance cavity 13;

the pump body 1 is provided with a liquid inlet hole 8 communicated with the sealing chamber 10, and the liquid inlet hole 8 can be externally connected with a volumetric pump;

the pump body 1 is also provided with a liquid discharge hole 11 communicated with the balance chamber 9.

The mechanical seal 7 is a double-ended mechanical seal 7.

A framework oil seal is arranged between the balance disc 5 and the pump body 1.

When the utility model is used:

the high-pressure balance liquid provided by the volumetric pump enters the sealing chamber 10 through the liquid inlet 8 on the pump body 1, the double-end mechanical seal 7 in the sealing chamber 10 forms absolute sealing on the pump chamber 12 and the sealing chamber 10, and then enters the balance cavity 13 of the balance disc 5 and the balance ring 4 through the balance hole 3 between the sealing chamber 10 and the balance chamber 9, so that the balance disc 5 is pushed away to play a role in balancing axial force, and the discharged balance liquid is discharged through the liquid discharge hole 11, and only a layer of thin liquid film is needed between the balance disc 5 and the balance ring 4 to keep an axial force balance state, so that the externally used volumetric pump has very small power and very small flow, and the axial force of the balance rotor 2 can be balanced through relatively less liquid entering the balance chamber 9, so compared with the prior art in the background art, no rated flow loss exists, the energy-saving effect is remarkable, the sensitivity and the balance force of the balance disc 5 are not influenced by the running environment and working condition of the pump, and the pump is enabled to run more stably;

the flow is very small because the capacity pump has very low power, namely, the water pressure generated in the balance chamber 9 is small, so that the framework oil seal is arranged between the balance disc 5 and the pump body 1.

The foregoing description is only illustrative of the utility model and is not to be construed as limiting the utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, or the like, which is within the spirit and principles of the present utility model, should be included in the scope of the claims of the present utility model.

Claims

1. The utility model provides an energy-conserving balance mechanism of axial force of pump, includes pump body (1), be equipped with pump cavity (12), sealing chamber (10) and balance chamber (9) on pump body (1), its characterized in that:

the sealing chamber (10) is positioned between the pump chamber (12) and the balancing chamber (9), the pump chamber (12) is provided with a rotor (2), the rotor (2) penetrates through the sealing chamber (10) and then enters the balancing chamber (9), a mechanical seal (7) for sealing is arranged in the sealing chamber (10), the mechanical seal (7) is arranged on the surface of the rotor (2), and the top and the bottom of the mechanical seal (7) are respectively arranged at the top and the bottom of the sealing chamber (10);

a balance ring (4) and a balance disc (5) are arranged in the balance chamber (9), a balance cavity (13) is formed between the balance ring (4) and the balance disc (5), and a balance hole (3) communicated with the balance cavity (13) is formed in the seal chamber (10);

a liquid inlet hole (8) communicated with the sealing chamber (10) is formed in the pump body (1), and a volumetric pump can be externally connected to the liquid inlet hole (8);

the pump body (1) is also provided with a liquid discharge hole (11) communicated with the balance chamber (9).

2. The energy efficient balancing mechanism for axial force of pump of claim 1, wherein: the mechanical seal (7) is a double-end-face mechanical seal (7).

3. The energy efficient balancing mechanism for axial force of pump of claim 1, wherein: and a framework oil seal is arranged between the balance disc (5) and the pump body (1).