CN107255072B

CN107255072B - Booster pump and water purification unit

Info

Publication number: CN107255072B
Application number: CN201710633208.0A
Authority: CN
Inventors: 郭丙春
Original assignee: Foshan Welling Washer Motor Manufacturing Co Ltd
Current assignee: Foshan Welling Washer Motor Manufacturing Co Ltd
Priority date: 2017-07-28
Filing date: 2017-07-28
Publication date: 2020-11-24
Anticipated expiration: 2037-07-28
Also published as: CN107255072A

Abstract

The invention relates to the field of booster pumps, and discloses a booster pump and water purification equipment. The booster pump comprises a booster pump main body and an end shell (100) arranged on the booster pump main body, wherein the end shell (100) and the internal structure of the booster pump jointly define a high-pressure cavity (A) and a low-pressure cavity (B); a first blocking part (1) is formed on the inner wall of the end part shell (100); the first blocking part (1) is provided with a pressure relief opening (102) used for communicating the high-pressure cavity (A) and the low-pressure cavity (B), and an elastic sealing element (400) capable of plugging or opening the pressure relief opening (102) according to the pressure difference between the high-pressure cavity (A) and the low-pressure cavity (B) is arranged at the pressure relief opening (102). According to the technical scheme, the structure of the booster pump is simplified, and the airtightness and the pressure stabilizing performance of the booster pump are improved.

Description

Booster pump and water purification unit

Technical Field

The invention relates to the technical field of booster pumps, in particular to a booster pump and water purifying equipment.

Background

At present, a booster pump is a main component for providing power for water purification equipment. The booster pump changes the pressure of the water source through the arrangement of the high-low pressure cavity inside, thereby achieving the purpose of water source pressurization. And in order to prevent the occurrence of unfavorable conditions that the booster pump causes the water source pressure to be overlarge and leads to the bursting of a connecting water pipe and the like, a pressure relief structure is also arranged in the booster pump, and when the water outlet pressure of the booster pump exceeds the specified limit, the high-low pressure cavity of the booster pump is communicated to perform pressure relief operation.

In the conventional booster pump, as shown in fig. 1, the pressure relief structure generally includes components such as a pressure relief pad 10, a pressure relief cap 20, and a spring 30. The pressure relief pad 10 is clamped with the convex rib on the inner wall of the pressure relief cavity C to seal the pressure relief opening of the low pressure cavity B. Meanwhile, the pressure relief pad 10 also blocks the pressure relief opening of the high-pressure cavity a and bears the pressing force, so as to play a role in stabilizing pressure. The existing booster pump adopts the pressure relief structure, the parts are used too much, the pressure is controlled by accumulated conduction of the parts, and the accuracy is difficult to ensure. In addition, when the booster pump is used for a long time, the spring 30 is easy to have the spring force attenuation, and the pressure relief pad 10 is easy to age and generate permanent deformation, so that the pressure stabilizing and sealing functions are reduced.

Disclosure of Invention

The invention aims to solve the technical problems of poor tightness and poor pressure stabilizing effect caused by complex pressure relief structure and excessive use of parts of a booster pump in the prior art.

In order to solve the above technical problems, according to an aspect of the present invention, a booster pump is provided. The booster pump comprises a booster pump main body and an end shell installed on the booster pump main body. The end housing and the internal structure of the booster pump together define a high pressure chamber and a low pressure chamber. A first blocking portion is formed on the inner wall of the end portion shell. The first blocking part is provided with a pressure relief opening used for communicating the high-pressure cavity and the low-pressure cavity, and the pressure relief opening is provided with an elastic sealing element capable of plugging or opening the pressure relief opening according to a pressure difference value between the high-pressure cavity and the low-pressure cavity.

Preferably, the first barrier comprises a closed-ended tubular wall extending towards the interior of the booster pump.

Preferably, the outer surface of the tubular wall is formed with a radially inwardly concave annular groove; the pressure relief port is formed in the tubular wall and communicated with the annular groove and the interior of the tubular wall; the resilient seal is mounted within the annular groove.

Preferably, a second blocking part for dividing the high pressure chamber into an introduction chamber and a pressure relief chamber is formed on the inner wall of the end housing; one end of the pressure relief cavity is communicated with the guide-in cavity, and the other end of the pressure relief cavity is sealed with the low-pressure cavity through the elastic sealing element.

Preferably, the first blocking portion extends from the end housing toward the interior of the high pressure chamber in a first direction; the second blocking portion extends from the end housing toward an interior of the high pressure chamber in a second direction; the pressure relief cavity is collectively defined by the first stop, the end housing, and the second stop.

Preferably, one end of the second blocking part extending to the inside of the high pressure chamber is formed with a guide part bent downward.

Preferably, the booster pump comprises a middle plate connected with the end part shell in a buckling manner and a water outlet valve arranged through the middle plate; the high-pressure cavity is communicated with the bottom end of the water outlet valve.

Preferably, the booster pump comprises a diaphragm connected with the water outlet valve; the diaphragm drives the water outlet valve to reciprocate so as to extrude water from the low-pressure cavity into the high-pressure cavity.

Preferably, the elastic seal is an annular rubber ring.

According to another aspect of the invention, a water purifying device comprising the booster pump is also provided.

According to the booster pump, the first blocking part for separating the high-pressure cavity from the low-pressure cavity is directly formed on the end part shell, the pressure relief port and the connecting elastic piece are arranged on the first blocking part, parts such as the pressure relief pad, the pressure relief cap and the spring in the pressure relief structure of the traditional booster pump are omitted, the structure of the booster pump is simplified, and the technical problem of poor tightness and pressure stabilization caused by excessive use of parts is effectively solved.

Drawings

FIG. 1 is a schematic diagram of a booster pump configuration of the prior art;

FIG. 2 is a schematic diagram of a booster pump configuration according to an embodiment of the present invention;

FIG. 3 is another schematic diagram of a booster pump configuration according to an embodiment of the present invention;

figure 4 is another schematic diagram of a booster pump configuration according to an embodiment of the present invention.

Description of the reference numerals

10 a pressure relief pad; 20 a pressure relief cap;

30 springs; 100 an end housing;

200 water outlet valves; 300 a middle plate;

400 an elastomeric seal; 500 membranes;

101 an annular groove; 102 a pressure relief vent;

1 a first blocking part; 11 a tubular wall;

12 a horizontal wall; 2 a second blocking portion;

21 a guide part; a, a high-pressure cavity;

b, a low-pressure cavity; c, a pressure relief cavity.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

The present invention provides a booster pump including a booster pump main body and an end housing 100 mounted on the booster pump main body. The end housing 100, together with the internal structure of the booster pump, defines a high pressure chamber a and a low pressure chamber B. A first stopper 1 is formed on an inner wall of the end housing 100. The first blocking portion 1 is formed with a relief port 102 for communicating the high pressure chamber a and the low pressure chamber B. An elastic sealing member 400 capable of blocking or opening the pressure relief port 102 according to a pressure difference between the high pressure chamber a and the low pressure chamber B is provided at the pressure relief port 102.

When the pressure difference value of water between the high pressure chamber a and the low pressure chamber B is smaller than the critical value, the elastic sealing member 400 is not deformed under the action of the water pressure in the high pressure chamber a, that is, the force causing the deformation of the elastic sealing member 400 is larger than the pressure of the water in the high pressure chamber a to the elastic sealing member 400, so that the elastic sealing member 400 blocks the pressure relief opening 102 to play a role in stabilizing pressure. And when the pressure difference of the water between the high pressure chamber a and the low pressure chamber B is greater than the critical value, the water in the high pressure chamber a presses the elastic sealing member 400 to be deformed. The elastic sealing member 400 deforms to open the pressure relief opening 102, and a part of water in the high pressure chamber a flows into the low pressure chamber B, so that the water pressure in the high pressure chamber a is reduced, and the pressure difference value of the water between the high pressure chamber a and the low pressure chamber B is reduced to be below a critical value, thereby completing the pressure relief. It can be seen that the booster pump of the present invention can accomplish the pressure relief process by the cooperation of both the first blocking part 1 and the elastic sealing member 400. Compared with the existing booster pump, the booster pump has a simple structure, and can effectively solve the technical problems of poor tightness and poor pressure stabilizing effect caused by accumulated conduction of pressure depending on parts due to excessive use of the parts.

In a particular embodiment of the invention, as shown in figures 2-4, the first barrier 1 comprises a closed-ended tubular wall 11 extending towards the interior of the booster pump. In this case, the inside of the tubular wall 11 is the high pressure chamber a and the outside of the tubular wall 11 is the low pressure chamber B. The pressure relief vent 102 may be formed on the circumference of the tubular wall 11, and the elastic seal 400 seals the pressure relief vent 102 by being sleeved on the outside of the tubular wall 11.

In order to ensure that the elastic sealing member 400 can deform in the radial direction of the tubular wall 11 under the action of water pressure to close or open the pressure relief opening 102, the outer surface of the tubular wall 11 is formed with a radially inwardly concave annular groove 101. A pressure relief port 102 is formed in the tubular wall 11 and communicates the annular recess 101 with the interior of the tubular wall 11. The elastic seal 400 is mounted in the annular groove 101. In this case, the annular groove 101 serves as an axial stop for the elastic sealing element 400, i.e., the annular groove 101 can effectively prevent the elastic sealing element 400 from moving axially along the tubular wall 11 under the action of water pressure. When the water in the high pressure chamber a presses the elastic sealing member 400, the elastic sealing member 400 is radially deformed to open the relief port 102, and a part of the water in the high pressure chamber a flows into the low pressure chamber B through the relief port 102. Preferably, a pressure relief vent 102 is formed in the tubular wall 11 at the bottom of the annular recess 101. The pressure relief vent 102 may be one or a plurality of through holes distributed circumferentially along the tubular wall 11.

Further, in order to form a transition buffer area between the high pressure chamber a and the low pressure chamber B, a second blocking portion 2 for dividing the high pressure chamber a into an introduction chamber and a pressure release chamber C is formed on an inner wall of the end housing 100. One end of the pressure relief cavity C is communicated with the leading-in cavity, and the other end of the pressure relief cavity C is separated from the low-pressure cavity B through the first blocking part 1. Preferably, the first blocking part 1 may be formed to extend in a first direction, for example, a longitudinal direction, from the end case 100 toward the inside of the high pressure chamber a. The second barrier 2 may be formed to extend in a second direction, e.g., a lateral direction, from the end case 100 toward the inside of the high pressure chamber a. The pressure relief chamber C is defined jointly by the first blocking part 1, the end housing 100 and the second blocking part 2.

In the above embodiment, the pressure release chamber C is formed below the introduction chamber, the upper portion of the pressure release chamber C communicates with the introduction chamber, and the right side of the pressure release chamber C is partitioned from the low pressure chamber B by the first blocking portion 1. Because the pressure relief cavity C is communicated with the lead-in cavity, the water pressure in the pressure relief cavity C is equal to the water pressure in the high pressure cavity A, when the pressure difference value of water between the high pressure cavity A and the low pressure cavity B is larger than a critical value, the water in the pressure relief cavity C extrudes the elastic sealing element 400 to deform and open the pressure relief opening 102, and part of water in the pressure relief cavity C flows into the low pressure cavity B, so that the water pressure in the high pressure cavity A is reduced. Preferably, one end of the second blocking part 2 extending to the inside of the high pressure chamber a is formed with a guide part 21 bent downward. The guide portion 21 serves to guide the water introduced into the chamber into the pressure relief chamber C.

In addition, the booster pump includes a middle plate 300 snap-coupled to the end housing 100 and a water outlet valve 200 disposed through the middle plate 300, and the high pressure chamber a communicates with a bottom end of the water outlet valve 200. Further, the booster pump further includes a diaphragm 500 connected to the water outlet valve 200, and the diaphragm 500 reciprocates the water outlet valve 200 to pump water from the low pressure chamber B to the high pressure chamber a.

In order to ensure the sealing and pressure stabilizing performance of the high-pressure cavity A in the pressurizing process of the booster pump and prevent water from overflowing from the pressure relief opening, the elastic sealing element 400 is an annular rubber ring. The sealing force, i.e., the deformation resistance, of the annular rubber ring should be greater than the water pressure in the high-pressure chamber a during the pressurization process of the booster pump. Under the condition, when the booster pump is in the boosting process, the annular rubber ring does not deform to play a role in sealing and stabilizing pressure, and when the booster pump is in the pressure relief process, the annular rubber ring deforms to open the pressure relief opening, so that water in the high-pressure cavity A flows into the low-pressure cavity B.

Finally, the invention also provides water purifying equipment which comprises the booster pump.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims

1. The booster pump is characterized by comprising a booster pump main body and an end shell (100) arranged on the booster pump main body, wherein the end shell (100) and the internal structure of the booster pump jointly define a high-pressure cavity (A) and a low-pressure cavity (B);

a first blocking part (1) is formed on the inner wall of the end part shell (100);

a pressure relief opening (102) used for communicating the high-pressure cavity (A) and the low-pressure cavity (B) is formed in the first blocking part (1), and an elastic sealing piece (400) capable of plugging or opening the pressure relief opening (102) according to the pressure difference between the high-pressure cavity (A) and the low-pressure cavity (B) is arranged at the pressure relief opening (102);

the first barrier (1) comprises a tubular wall (11) which extends towards the inside of the booster pump and is closed at the end, the inside of the tubular wall (11) is the high-pressure cavity (A), and the outside is the low-pressure cavity (B);

the outer surface of the tubular wall (11) is provided with a radially inwards concave annular groove (101); the pressure relief port (102) is formed in the tubular wall (11) and communicates the annular groove (101) with the interior of the tubular wall (11); the resilient seal (400) is mounted within the annular groove (101).

2. The booster pump according to claim 1, wherein a second barrier portion (2) for dividing the high pressure chamber (a) into an introduction chamber and a pressure release chamber (C) is formed on an inner wall of the end housing (100); one end of the pressure relief cavity (C) is communicated with the guide-in cavity, and the other end of the pressure relief cavity (C) is sealed with the low-pressure cavity (B) through the elastic sealing element (400).

3. The booster pump according to claim 2, wherein the first barrier (1) extends in a first direction from the end housing (100) towards the interior of the high pressure chamber (a); the second blocking portion (2) extends from the end housing (100) towards the interior of the high pressure chamber (A) in a second direction; the pressure relief chamber (C) is jointly defined by the first blocking part (1), the end housing (100) and the second blocking part (2).

4. The booster pump according to claim 3, wherein one end of the second barrier (2) extending to the inside of the high pressure chamber (A) is formed with a guide (21) bent downward.

5. The booster pump of claim 1, wherein the booster pump comprises an intermediate plate (300) snap-fit connected with the end housing (100) and a water outlet valve (200) disposed through the intermediate plate (300); the high-pressure cavity (A) is communicated with the bottom end of the water outlet valve (200).

6. The booster pump of claim 5, wherein the booster pump comprises a membrane (500) connected to the water outlet valve (200); the diaphragm (500) drives the water outlet valve (200) to reciprocate so as to extrude water from the low-pressure cavity (B) into the high-pressure cavity (A).

7. The booster pump of claim 1, wherein the resilient seal (400) is an annular rubber ring.

8. A water purification apparatus, characterized in that the water purification apparatus comprises a booster pump according to any one of claims 1 to 7.