CN215521294U

CN215521294U - Vertical self-priming centrifugal pump

Info

Publication number: CN215521294U
Application number: CN202121319948.5U
Authority: CN
Inventors: 周红兵; 唐晓晨; 蒋建珍; 王维; 刘列
Original assignee: Jiangsu Zhenhua Haike Equipment Technology Co Ltd
Current assignee: Jiangsu Zhenhua Haike Equipment Technology Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-01-14
Anticipated expiration: 2031-06-11

Abstract

The utility model belongs to the field of data storage, and particularly relates to a vertical self-priming centrifugal pump which comprises a pump body, wherein the right side of the pump body is fixedly connected with an inlet, the left side of the pump body is fixedly connected with an outlet, the middle part inside the pump body is provided with an impeller, the bottom of the pump body is provided with a suction chamber, the lower side of the outlet is provided with an extrusion chamber, and the bottom of the extrusion chamber is fixedly connected with a valve body. The valve body is arranged to control the connection and disconnection between the extrusion chamber and the suction chamber, when the water pump works normally, the valve is closed, no backflow loss caused by a backflow hole exists in the pump body, and the efficiency of the self-priming pump is improved; and because there is not return loss in the normal work, the flow area of the external valve is relatively great, can improve the self-priming performance of the water pump effectively, produce the low in manufacturing cost at the same time, the practicality is better, suitable for using in different centrifugal pumps, easy to popularize.

Description

Vertical self-priming centrifugal pump

Technical Field

The utility model relates to the field of centrifugal pumps, in particular to a vertical self-priming centrifugal pump.

Background

The centrifugal pump is a pump for conveying a liquid by centrifugal force generated when an impeller rotates. The liquid medium gains energy during its movement through the impeller, resulting in an increase in the static pressure energy and a simultaneous increase in the flow velocity. When the liquid leaves the impeller and enters the pump shell, the speed is reduced due to the gradual expansion of the flow channel in the shell, part of kinetic energy is converted into static pressure energy, and finally the static pressure energy flows into a discharge pipeline along the tangential direction. When liquid is thrown from the center of the impeller to the periphery, a low-pressure area is formed in the center of the impeller, and the liquid is sucked into the center of the impeller under the action of the total potential energy difference between the liquid level of the storage tank and the center of the impeller. By virtue of the continuous operation of the impeller, liquid is continuously sucked and discharged. The mechanical energy gained by the liquid in the centrifugal pump is finally manifested as an increase in the static pressure energy.

The self-priming centrifugal pumps commonly used at present are generally divided into two types: a self-priming device with the aid of an external self-priming device, such as an external self-priming device or an external vacuum pump; one is a centrifugal pump having a self-priming function. The centrifugal pump with the self-priming function is basically of an internal mixing structure, namely, liquid falling back from the gas-liquid separation cavity returns to the impeller working cavity or the suction chamber through the backflow hole in the pump cavity, when the self-priming process is finished, backflow loss exists when the water pump works normally, the efficiency of the water pump is influenced, the backflow hole is large, the efficiency of the water pump is low, the backflow hole is small, the self-priming performance of the water pump is poor, and the improvement is needed.

To this end, we propose a vertical self-priming centrifugal pump to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems of low efficiency, poor self-priming performance and pending improvement of a water pump in the prior art, and provides a vertical self-priming centrifugal pump.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a vertical self-priming centrifugal pump, which comprises a pump body, the right side fixedly connected with of the pump body is used for the import that liquid got into, the import is used for connecting liquid input pipeline, the left side fixedly connected with of the pump body is used for liquid discharge's export, the export is used for connecting the pipeline of liquid output, the inside middle part of the pump body is equipped with the impeller that provides suction, the bottom of the pump body is equipped with the suction chamber that is used for inhaling liquid, the downside of export is equipped with and is used for the extrusion chamber with liquid discharge, the bottom fixedly connected with valve body of extrusion chamber, the valve body is used for controlling the intercommunication bottom the extrusion chamber.

In the above-mentioned vertical self-priming centrifugal pump, the suction chamber is communicated with the inside of the inlet, and the negative pressure generated by the impeller sucks the liquid from the inlet into the pump body through the suction chamber.

In the above-mentioned vertical self-priming centrifugal pump, the pressing-out chamber communicates with the inside of the outlet, and the impeller transfers the liquid into the pressing-out chamber and discharges it through the outlet.

In foretell vertical self-priming centrifugal pump, the lower extreme fixedly connected with valve head of valve body, the inside of valve body is equipped with the case, and the case can move under the pressure effect and realize the switching through the contact with the valve body, and when water pump normal operating, the valve body is closed, and the inside return loss that does not have the backward flow hole and arouse of pump has increased the efficiency of self-priming pump.

In the vertical self-priming centrifugal pump, the upper end of the valve core is communicated with the bottom of the extrusion chamber, the right side in the valve body is provided with the communicating pipe, the right end of the communicating pipe is communicated with the inside of the suction chamber, whether the communicating pipe is unblocked or not can be realized through opening and closing of the valve core and the valve body, so that the conduction of liquid in the extrusion chamber and the suction chamber is controlled, when the valve core and the valve body are in a natural opening state, water in the extrusion chamber can return to the suction chamber through the communicating pipe, and the self-priming process of gas-liquid mixing-gas-liquid separation is realized with gas at the inlet.

Compared with the prior art, the utility model has the following advantages:

1. the valve body is arranged to control the connection and disconnection between the extrusion chamber and the suction chamber, when the water pump works normally, the valve is closed, no backflow loss caused by a backflow hole exists in the pump, and the efficiency of the self-priming pump is improved;

2. the utility model has no return loss during normal operation, and the flow area of the external valve is relatively large, thus effectively improving the self-priming performance of the water pump;

3. the centrifugal pump is simple in structure, low in production and manufacturing cost, good in practicability, suitable for being used in different centrifugal pumps and convenient to popularize.

Drawings

Fig. 1 is a schematic structural view of a vertical self-priming centrifugal pump according to the present invention.

In the figure: 1. a pump body; 2. an inlet; 3. an outlet; 4. a suction chamber; 5. an impeller; 6. an extrusion chamber; 7. a valve core; 8. a valve body; 9. a valve head; 10. a communication pipe is provided.

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.

Referring to fig. 1, a vertical self-priming centrifugal pump, including the pump body 1, the right side fixedly connected with of the pump body 1 is used for the import 2 of liquid entering, import 2 is used for connecting the liquid input pipeline, the left side fixedly connected with of the pump body 1 is used for liquid exhaust export 3, export 3 is used for connecting the pipeline of liquid output, the inside middle part of the pump body 1 is equipped with the impeller 5 that provides suction, the bottom of the pump body 1 is equipped with the suction chamber 4 that is used for inhaling liquid, the downside of export 3 is equipped with and is used for the extrusion chamber 6 with liquid exhaust, the bottom fixedly connected with valve body 8 of extrusion chamber 6, valve body 8 is used for controlling the intercommunication of extrusion chamber 6 bottom.

The suction chamber 4 is communicated with the inside of the inlet 2, and the negative pressure generated by the impeller 5 sucks the liquid into the pump body 1 from the inlet 2 through the suction chamber 4.

The pressing-out chamber 6 communicates with the interior of the outlet 3, and the impeller 5 conveys the liquid into the pressing-out chamber 6 and discharges it through the outlet 3.

The lower extreme fixedly connected with valve head 9 of valve body 8, the inside of valve body 8 is equipped with case 7, and case 7 can move under the pressure effect and realize the switching through the contact with valve body 8, and when the water pump normally worked, valve body 8 was closed, and the inside return loss that does not have the backward flow hole and arouse of pump has increased the efficiency of self-priming pump.

The upper end of the valve core 7 is communicated with the bottom of the extrusion chamber 6, the right side in the valve body 8 is provided with a communicating pipe 10, the right end of the communicating pipe 10 is communicated with the inside of the suction chamber 4, whether the communicating pipe 10 is unblocked or not can be realized through opening and closing of the valve core 7 and the valve body 8, so that the conduction of liquid in the extrusion chamber 6 and the suction chamber 4 is controlled, when the valve core 7 and the valve body 8 are in a natural opening state, water in the extrusion chamber 6 can return to the suction chamber 4 through the communicating pipe 10, and the self-priming process of gas-liquid mixing-gas-liquid separation is realized with gas in the inlet 2.

The working principle is as follows:

when the pump is used for the first time, water is filled into the pump body 1 (water filling is not needed subsequently), the pump set is started, at the moment, the gas of the inlet 2 and a small amount of water in the pump body 1 form a gas-liquid mixed phase under the action of the impeller 5, and after the gas and the small amount of water enter the extrusion chamber 6, gas-liquid separation is realized. In the self-priming process, pressure cannot be provided in the extrusion chamber 6, the valve core 7 and the valve body 8 are in a natural opening state, at the moment, water in the extrusion chamber 6 can return to the suction chamber 4 through the communicating pipe 10, and the gas-liquid mixing-gas-liquid separation self-priming process is continuously realized with the gas at the inlet 2. After the self-priming process is finished, pressure is built in the extrusion chamber 6, at the moment, the valve core 7 is closed with the valve body 8 under the action of pressure, the communication between the extrusion chamber 6 and the suction chamber 4 is blocked, the water pump works normally, the on-off between the extrusion chamber 6 and the suction chamber 4 is controlled by arranging the valve body 8, when the water pump works normally, the valve is closed, no backflow loss is caused by a backflow hole in the pump body 1, and the efficiency of the self-priming pump is improved; because no backflow loss exists during normal work, the flow area of the external valve is relatively large, and the self-priming performance of the water pump can be effectively improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a vertical self-priming centrifugal pump, includes the pump body (1), its characterized in that, the right side fixedly connected with import (2) of the pump body (1), the left side fixedly connected with export (3) of the pump body (1), the inside middle part of the pump body (1) is equipped with impeller (5), the bottom of the pump body (1) is equipped with suction chamber (4), the downside of export (3) is equipped with extrusion chamber (6), the bottom fixedly connected with valve body (8) of extrusion chamber (6).

2. A vertical self-priming centrifugal pump according to claim 1, characterized in that said suction chamber (4) communicates with the inside of the inlet (2).

3. A vertical self-priming centrifugal pump according to claim 1, characterized in that said pressing-out chamber (6) communicates with the inside of the outlet (3).

4. A vertical self-priming centrifugal pump according to claim 1, characterized in that the lower end of the valve body (8) is fixedly connected with a valve head (9), and a valve core (7) is arranged inside the valve body (8).

5. A vertical self-priming centrifugal pump according to claim 4, characterized in that the upper end of the valve core (7) communicates with the bottom of the pressing-out chamber (6), and the right side of the interior of the valve body (8) is provided with a communicating pipe (10).

6. A vertical self-priming centrifugal pump according to claim 5, characterized in that the right end of the communication pipe (10) communicates with the interior of the suction chamber (4).