CN222759928U - Pressure release valve structure of diaphragm booster pump - Google Patents

Abstract

The utility model discloses a pressure relief valve structure of a diaphragm booster pump, which comprises a shell, a high-pressure area, a low-pressure area, a pressure relief valve arranged on the shell, and a pressure relief module arranged on the shell and matched with the pressure relief valve to enable fluid to complete pressure relief operation, wherein the pressure relief module comprises a buffer area which is in contact with the pressure relief valve and a first cavity which provides a moving space for the pressure relief valve, one end of the buffer area is communicated with the low-pressure area, and the other end of the buffer area is communicated with the high-pressure area. After the fluid in the high-pressure area is buffered through the buffer area, the pressure of the fluid flowing to the low-pressure area at the position where the fluid contacts the pressure relief valve tends to be uniform, the problems of frequent jumping and unstable pressure of the pressure relief valve are avoided, meanwhile, the first cavity is arranged, the moving space of the pressure relief valve is improved, the pressure relief valve has enough space to move in the pressure relief process, and the stability of operation is improved.

Description

Pressure release valve structure of diaphragm booster pump

Technical Field

The utility model belongs to the technical field of booster pumps, and particularly relates to a diaphragm booster pump pressure relief valve structure.

Background

The main function of the booster pump is to boost and convey fluid to the outside, in order to prevent the fluid pressure generated by the internal boost of the booster pump from being greater than the bearing pressure of the equipment, a pressure relief valve structure is needed to be added to cope with the condition of overlarge pressure, and the fluid in a high pressure area is guided and released to a low pressure area, so that the purposes of reducing pressure and protecting the booster pump are achieved, but the existing upper cover of the pressure relief valve structure is designed to be used as a thickness support of an injection molding material to be in compressive stress, so that the risk of shrinkage deformation of the thickness of plastic causes slow surge, which is always a major hidden trouble after the products in the industry are marketed. The structure has certain deformation risk, forms the defect of valve gap slow surge risk, bears different pressures in the position of relief valve bearing external force, and the uneven pressure bearing can bring the frequent problem of beating of pressure, pressure unstability, leads to the problem emergence of leaking more easily.

Disclosure of utility model

The utility model aims to provide a pressure relief valve structure of a diaphragm booster pump, which aims to solve the technical problems, and is provided with a buffer zone, so that after fluid in a high-pressure zone is buffered by the buffer zone, the pressure of the fluid flowing to a low-pressure zone at the position where the fluid contacts with a pressure relief valve tends to be uniform, the problems of frequent jumping and unstable pressure of the pressure relief valve are avoided, and meanwhile, a first cavity is arranged, the moving space of the pressure relief valve is improved, the pressure relief valve has enough space to move in the pressure relief process, and the stability of operation is improved.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

A pressure relief valve structure of a diaphragm booster pump comprises a shell, a high-pressure area, a low-pressure area, a pressure relief valve arranged on the shell and a pressure relief module arranged on the shell and matched with the pressure relief valve to enable fluid to complete pressure relief operation, wherein the pressure relief module comprises a buffer area which is in contact with the pressure relief valve and a first cavity which provides a moving space for the pressure relief valve, one end of the buffer area is communicated with the low-pressure area, and the other end of the buffer area is communicated with the high-pressure area. After the fluid in the high-pressure area is buffered through the buffer area, the pressure of the fluid flowing to the low-pressure area at the position where the fluid contacts the pressure relief valve tends to be uniform, the problems of frequent jumping and unstable pressure of the pressure relief valve are avoided, meanwhile, the first cavity is arranged, the moving space of the pressure relief valve is improved, the pressure relief valve has enough space to move in the pressure relief process, and the stability of operation is improved.

Preferably, the buffer area comprises a base, a plurality of first bosses arranged on the base at intervals, first gaps arranged between the first bosses, a second boss arranged in the middle of the base, and an annular area arranged between the first bosses and the second bosses and communicated with the first gaps;

The upper end face of the first boss and the upper end face of the second boss are in contact with the pressure relief valve. The first notch is formed by arranging a first boss around the circumference direction, and the annular area is communicated with the low-pressure area and the high-pressure area in a pressure release state. Setting up pedestal and first boss, second boss, first breach, annular region, when the high-pressure region is in great pressure, fluid flows to the annular region through a plurality of first breach, makes fluidic pressure comparatively balanced in each direction to on acting on the relief valve, the external force that makes relief valve and fluidic contact surface bear is more even, avoids producing frequent problem emergence of beating because of the atress is inhomogeneous, when pressure is great, the fluid promotes the relief valve and removes, releases the contact state with first boss, second boss, thereby accomplishes the pressure release.

Preferably, the upper end face of the first boss is flush with the upper end face of the second boss. The first boss and the second boss which are parallel and level with each other are arranged, so that the upper surface is smooth, the contact and anastomosis degree of the pressure relief valve with the first boss and the second boss is improved, the sealing degree in a non-pressure relief state is improved, and meanwhile the problem that the pressure is different and the pressure relief valve frequently jumps due to the fact that the pressure is in different planes is avoided.

Preferably, a circulating passageway communicated with the high-pressure area is arranged below the buffer area, the circulating passageway is arranged around the outer edge of the seat body, and the circulating passageway is communicated with the first notch. The circulating passage is arranged on the outer edge of the seat body in a surrounding mode and is communicated with the first notch, so that the circulating passage communicated with the high-pressure area circulates to the first notch through a surrounding path, and the fluid pressure circulating to each first notch is uniform.

Preferably, the buffer zone further comprises a pressure relief channel communicated with the low-pressure zone, the pressure relief channel is arranged inside the second boss in a penetrating mode, and the pressure relief channel and the second boss are coaxially arranged. The pressure relief channel is arranged below the pressure relief valve, the pressure relief channel is arranged inside the second boss, a gap exists between the pressure relief valve and the second boss when the pressure relief valve is moved by larger pressure, fluid flows to the upper side of the second boss through the annular area and flows to the low pressure area through the pressure relief channel, pressure relief is completed, and the fluid flows to the pressure relief channel in the middle through the annular area, so that the pressure relief valve is beneficial to balancing acting forces born by the pressure relief valve in all directions, and the problem of frequent jumping is avoided.

Preferably, the first boss and the second boss are coaxially arranged on the base body. The coaxial arrangement makes the first boss and the second boss form a surrounding state, makes the first notch also form a surrounding state, and makes the pressure of the high-pressure fluid flowing in each first notch more uniform.

Preferably, the relief valve includes the elasticity portion of being connected with the casing, sets up in the relief valve cap of elasticity portion one end, the relief valve cap lower extreme is inconsistent with first boss upper end, relief valve cap lower extreme and second boss upper end looks butt, the relief valve cap cooperation sets up in first cavity. And the elastic part enables the pressure relief valve cap in the non-pressure relief state to be in a state of being in contact with the first boss and the second boss, so that fluid can circulate through the first notch and the annular area.

Preferably, the edge of the upper end of the pressure relief valve cap is provided with an embedded part, the pressure relief module further comprises a second cavity for providing a moving space for the pressure relief valve, the second cavity is arranged above the first cavity, and an embedded end embedded with the embedded part is arranged below the second cavity. The pressure relief valve cap is circular in cross section, and the edge of the upper end of the pressure relief valve cap is provided with an embedded part, wherein the embedded part is embedded with the embedded end, so that the tightness of the pressure relief valve cap and the second cavity is improved, the sealing degree of the pressure relief valve cap is improved, and the problem of frequent jumping caused by low sealing degree is avoided.

Preferably, a supporting seat body is arranged between the elastic part and the pressure relief valve cap, one end of the supporting seat body is connected with the tail end of the elastic part, and the other end of the supporting seat body is supported against the upper surface of the pressure relief valve cap. The elastic part is a spring, and is provided with a supporting seat body to avoid direct connection of the tail ends of the pressure relief valve caps, wherein the cross section of the supporting seat body is in a convex shape, so that the contact area between the pressure relief valve caps and the supporting seat body is large, and the service life of the supporting seat body is prolonged.

Preferably, the pressure release valve further comprises a pressure release valve upper cover connected with the elastic part, and the pressure release valve upper cover is fixedly connected with the shell;

The pressure release valve upper cover lower extreme sets up sealed end, the pressure release valve upper cover sets up the faying surface that laminates mutually with the casing.

Set up sealed end, when the pressure release valve cap is by the jack-up, pressure release valve cap upper end is inconsistent with sealed end, avoids fluid to flow to outside from sealed end setting department, and the relief valve upper cover sets up the laminating face simultaneously, improves the closely degree that relief valve upper cover and casing laminated mutually, improves whole sealed effect.

The application has the beneficial technical effects that:

According to the utility model, the buffer area is arranged, so that after the fluid in the high-pressure area is buffered through the buffer area, the pressure of the fluid flowing to the low-pressure area at the position where the fluid contacts the pressure relief valve tends to be uniform, the problems of frequent jumping and unstable pressure of the pressure relief valve are avoided, and meanwhile, the first cavity is arranged, so that the moving space of the pressure relief valve is increased, the pressure relief valve has enough space to move in the pressure relief process, and the stability of operation is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the bottom view of the present utility model;

FIG. 3 is a schematic view of the cross-sectional structure of the view A-A of FIG. 2;

FIG. 4 is a schematic diagram of an explosive structure according to the present utility model;

FIG. 5 is a schematic view of another explosive construction of the present utility model;

FIG. 6 is a schematic view of another explosive construction of the present utility model;

FIG. 7 is a schematic view of the housing structure of the present utility model;

FIG. 8 is a schematic view showing the cross-sectional structure of B-B of FIG. 7;

FIG. 9 is a schematic view of an arrangement of flow-through aisles;

FIG. 10 is a schematic diagram showing a cross-sectional structure of a pressure release valve according to an old technical scheme;

fig. 11 is a schematic diagram of an explosion structure of the prior art.

Reference numerals

1-A shell, 11-a high-pressure area, 12-a low-pressure area, 13-a pressure relief valve, 141-a buffer area, 142-a first cavity, 1410-a base, 1411-a first boss, 1412-a first notch, 1413-a second boss, 1414-an annular area, 143-a flow passage, 144-a pressure relief passage, 131-an elastic part, 132-a pressure relief valve cap, 1321-an embedded part, 145-a second cavity, 1451-an embedded end, 133-a collision base, 134-a pressure relief valve upper cover, 1341-a sealed end and 1342-an attaching surface;

71-valve body, 72-valve cap, 73-elastic part, 137-first communication port, 14-second communication port, 15-interference ring, 74-interference block, 121-first interference table, 122-second interference table and 123-third interference table.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will explain the specific embodiments of the present utility model with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.

The technical scheme of the utility model is described in detail in the following by specific embodiments.

A pressure relief valve structure of a diaphragm booster pump comprises a shell 1, a high-pressure area 11, a low-pressure area 12, a pressure relief valve 13 arranged on the shell, and a pressure relief module which is arranged on the shell 1 and matched with the pressure relief valve 13 to enable fluid to complete pressure relief operation, wherein the pressure relief module comprises a buffer area 141 which is in contact with the pressure relief valve 13, and a first cavity 142 which provides a moving space for the pressure relief valve 13, one end of the buffer area 141 is communicated with the low-pressure area 12, and the other end of the buffer area 141 is communicated with the high-pressure area 11. The buffer zone 141 is arranged, after the fluid in the high-pressure zone 11 is buffered through the buffer zone 141, the pressure of the fluid flowing to the low-pressure zone 12 at the position where the fluid contacts the pressure relief valve tends to be uniform, the problems of frequent jumping and unstable pressure of the pressure relief valve 13 are avoided, meanwhile, the first cavity 142 is arranged, the moving space of the pressure relief valve 13 is improved, the pressure relief valve 13 has enough space to move in the pressure relief process, and the stability of operation is improved.

The buffer zone 141 includes a base 1410, a plurality of first bosses 1411 disposed on the base 1410 at intervals, a first notch 1412 disposed between the first bosses 1411, a second boss 1413 disposed in the middle of the base 1410, and an annular zone 1414 disposed between the first bosses 1411 and the second bosses 1413 and communicated with the first notch 1412;

The upper end surface of the first boss 1411 and the upper end surface of the second boss 1413 are both in contact with the pressure release valve 13. The first notch 1412 is formed by circumferentially surrounding the first boss 1411, and the annular region 1414 is in communication with the low pressure region 12 and the high pressure region 11 in a pressure release state. When the high-pressure area 11 is at a high pressure, fluid flows to the annular area 1414 through the plurality of first notches 1412, so that the pressure of the fluid is balanced in all directions and acts on the pressure release valve 13, the external force born by the contact surface of the pressure release valve 13 and the fluid is uniform, the problem of frequent jumping caused by uneven stress is avoided, and when the pressure is high, the fluid pushes the pressure release valve 13 to move to release the contact state with the first boss 1411 and the second boss 1413, thereby completing pressure release.

The upper end surface of the first boss 1411 is flush with the upper end surface of the second boss 1413. The first boss 1411 and the second boss 1413 which are parallel and level with each other are arranged, so that the upper surface is relatively flat, the contact and coincidence degree of the pressure relief valve 13 with the first boss 1411 and the second boss 1413 is improved, the sealing degree in a non-pressure relief state is improved, and meanwhile, the problem that the pressure is different and the pressure relief valve frequently jumps due to the fact that the pressure is different due to the fact that the pressure is located on different planes is avoided.

The buffer zone 142 is provided with a circulation passage 143 communicating with the high-pressure zone 11 below, the circulation passage 143 is circumferentially arranged at the outer edge of the seat body 1410, and the circulation passage 143 is communicated with the first notch 1412. The circulating channels 143 are circumferentially arranged on the outer edge of the base 1410 and are communicated with the first gaps 1412, so that the circulating channels 143 communicated with the high-pressure area 11 circulate to the first gaps 1412 through a circumferential path, and the fluid pressure circulating to each first gap 1412 is relatively uniform.

The buffer zone 141 further includes a pressure relief channel 144 that communicates with the low pressure zone 12, where the pressure relief channel 144 is disposed inside the second boss 1413 in a penetrating manner, and the pressure relief channel 144 and the second boss 1413 are coaxially disposed. The pressure release channel 144 is arranged below the pressure release valve 13, the pressure release channel 144 is arranged inside the second boss 1413, when the pressure release valve 13 is moved by larger pressure to enable a gap to exist between the pressure release valve 13 and the second boss 1413, fluid flows to the upper side of the second boss 1413 through the annular area 1414 and flows to the low pressure area 12 through the pressure release channel 144, pressure release is completed, and the fluid flows to the pressure release channel 144 in the middle through the annular area 1414, so that the balance of acting forces born by the pressure release valve 13 in all directions is facilitated, and the problem of frequent jumping is avoided.

The first boss 1411 and the second boss 1413 are coaxially disposed on the base 1410. The coaxial arrangement makes the first boss 1411 and the second boss 1413 form a surrounding state, makes the first notch 1412 also form a surrounding state, and makes the pressure of the high-pressure fluid flowing into each first notch 1412 relatively uniform.

The relief valve 13 includes the elastic part 131 that is connected with casing 1, sets up in the relief valve cap 132 of elastic part 131 one end, relief valve cap 132 lower extreme is inconsistent with first boss 1411 upper end, relief valve cap 132 lower extreme and the contact of second boss 1413 upper end, relief valve cap 132 cooperation sets up in first cavity 142. The elastic part 131 makes the pressure release bonnet 132 in the non-pressure release state in a state of being in contact with the first boss 1411 and the second boss 1413, so that fluid can circulate through the first notch 1412 and the annular area 1414.

The edge of the upper end of the pressure relief bonnet 132 is provided with an engaging portion 1321, the pressure relief module further comprises a second cavity 145 for providing a moving space for the pressure relief valve 13, the second cavity 145 is disposed above the first cavity 142, and an engaging end 1451 engaged with the engaging portion 1321 is disposed below the second cavity 145. The first cavity 142 and the second cavity 145 are coaxially arranged, the diameter of the first cavity 142 is smaller than that of the second cavity 145, the cross section of the pressure relief valve cap 132 is circular, an embedded part 1321 is arranged at the edge of the upper end of the pressure relief valve cap 132, the embedded part 1321 is embedded with the embedded end 1451, and the tightness of the pressure relief valve cap 132 and the second cavity 145 is improved, so that the sealing degree of the pressure relief valve cap 132 is improved, and the problem of frequent jumping caused by low sealing degree is avoided.

An abutting seat body 133 is arranged between the elastic part 131 and the pressure relief valve cap 132, one end of the abutting seat body 133 is connected with the tail end of the elastic part 131, and the other end of the abutting seat body 133 abuts against the upper surface of the pressure relief valve cap 132. The elastic part 131 is a spring, and is provided with a supporting seat 133 to avoid the direct connection of the tail end of the pressure relief valve cap 132, wherein the cross section of the supporting seat 133 is in a shape of a 'convex', so that the contact area between the pressure relief valve cap 132 and the supporting seat 133 is large, and the service life of the supporting seat 133 is prolonged.

The pressure release valve 13 further comprises a pressure release valve upper cover 134 connected with the elastic part 131, and the pressure release valve upper cover 134 is fixedly connected with the shell 1;

The lower end of the pressure release valve upper cover 134 is provided with a sealing end 1341, and the pressure release valve upper cover 1341 is provided with an attaching surface 1342 attached to the casing 1.

Set up sealed end 1341, when pressure release valve cap 132 is jacked, pressure release valve cap 132 upper end is inconsistent with sealed end 1341, avoids the fluid to flow to outside from sealed end 1341 setting department, and relief valve upper cover 134 sets up faying face 1342 simultaneously, improves the inseparable degree that relief valve upper cover 134 laminated mutually with casing 1, improves whole sealed effect.

The pressure relief valve upper cover 134 is provided with a plurality of reinforcing ribs 1343, so that the mechanical strength of the pressure relief valve upper cover is enhanced, and the pressure relief valve upper cover is not easy to deform under the condition of continuously receiving the elastic force of a spring.

Compared with the prior art, when the pressure regulating valve is regulated to 170psi, the spring pressure is only 5.7KG, and compared with the prior art, when the pressure regulating valve is regulated to 170psi, the spring pressure is 7.8KG, and compared with the spring pressure value, the load bearing pressure of the pump head and the pressure valve upper cover is reduced by 2.1 KG. As shown in fig. 9 to 10, in the prior art, the pressure relief valve is assembled by sequentially arranging the valve body 71, the elastic portion 73, the abutting block 74 and the valve cap 72, the lower end of the valve cap 72 abuts against the upper end face of the first abutting table 121, the upper end face of the second abutting table 122, the upper end face of the third abutting table 123 and the abutting ring 15, in the prior art, after the fluid enters from the first communication port 137, the fluid is split to the first abutting table 121 through the second abutting table, the split mode only splits one angle, and the problem of uneven distribution of pressure in the fluid circulation process occurs, so that the pressure applied to the valve cap 72 has a certain area with uneven pressure at the bottom, while in the prior art, the fluid flows to the annular area 1414 through the plurality of first gaps 1412, so that the pressure of the fluid is balanced in all directions and acts on the pressure relief valve 13, the contact surface of the pressure relief valve 13 and the fluid is uniformly distributed to the first abutting table 121, and the reinforcing ribs 3 arranged above the pressure relief valve are matched, and are not easy to deform under the condition of continuous spring force 134. The pressure value of the water pump is not easy to drop. The problem of the decline of the airtight pressure value for a long time of storage is effectively solved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

The embodiment of the pressure release valve structure of the diaphragm booster pump provided by the utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the utility model. It should be noted that it will be apparent to those skilled in the art that the present utility model may be modified and adapted without departing from the principles of the present utility model, and that such modifications and adaptations are intended to be within the scope of the appended claims.

Claims (10)

1. The utility model provides a diaphragm booster pump relief valve structure, includes casing (1), high pressure area (11), low pressure area (12), sets up relief valve (13) on the casing, sets up on casing (1) and cooperates relief valve (13) to make the pressure release module of fluid completion pressure release operation, its characterized in that, pressure release module includes buffer (141) inconsistent with relief valve (13), provides first cavity (142) of removal space for relief valve (13), buffer (141) one end and low pressure area (12) intercommunication, buffer (141) other end and high pressure area (11) intercommunication.

2. The diaphragm booster pump relief valve structure of claim 1, wherein the buffer zone (141) comprises a base (1410), a plurality of first bosses (1411) arranged on the base (1410) at intervals, first notches (1412) arranged between the first bosses (1411), a second boss (1413) arranged in the middle of the base (1410), and an annular zone (1414) arranged between the first bosses (1411) and the second bosses (1413) and communicated with the first notches (1412);

The upper end face of the first boss (1411) and the upper end face of the second boss (1413) are in contact with the pressure release valve (13).

3. The diaphragm booster pump relief valve structure of claim 2, wherein an upper end surface of the first boss (1411) is flush with an upper end surface of the second boss (1413).

4. The pressure release valve structure of the diaphragm booster pump according to claim 2, wherein a circulating passage (143) communicated with the high-pressure area (11) is arranged below the buffer area (141), the circulating passage (143) is arranged around the outer edge of the seat body (1410), and the circulating passage (143) is communicated with the first notch (1412).

5. The diaphragm booster pump relief valve structure of claim 2, wherein the buffer zone (141) further comprises a relief channel (144) communicating with the low pressure zone (12), the relief channel (144) is disposed through the second boss (1413), and the relief channel (144) is disposed coaxially with the second boss (1413).

6. The pressure release valve structure of the diaphragm booster pump according to claim 2, wherein the first boss (1411) and the second boss (1413) are coaxially disposed on the base body (1410).

7. The pressure relief valve structure of a diaphragm booster pump according to claim 2, wherein the pressure relief valve (13) comprises an elastic portion (131) connected with the casing (1), and a pressure relief valve cap (132) arranged at one end of the elastic portion (131), the lower end of the pressure relief valve cap (132) is abutted against the upper end of the first boss (1411), the lower end of the pressure relief valve cap (132) is abutted against the upper end of the second boss (1413), and the pressure relief valve cap (132) is matched and arranged in the first cavity (142).

8. The pressure relief valve structure of the diaphragm booster pump according to claim 7, characterized in that an engaging portion (1321) is provided at an upper end edge of the pressure relief valve cap (132), the pressure relief module further comprises a second cavity (145) for providing a movement space for the pressure relief valve (13), the second cavity (145) is provided above the first cavity (142), and an engaging end (1451) engaged with the engaging portion (1321) is provided below the second cavity (145).

9. The pressure relief valve structure of the diaphragm booster pump according to claim 7, wherein an abutting seat body (133) is disposed between the elastic portion (131) and the pressure relief valve cap (132), one end of the abutting seat body (133) is connected with the end of the elastic portion (131), and the other end of the abutting seat body (133) abuts against the upper surface of the pressure relief valve cap (132).

10. The pressure release valve structure of the diaphragm booster pump according to claim 7, wherein the pressure release valve (13) further comprises a pressure release valve upper cover (134) connected with the elastic part (131), and the pressure release valve upper cover (134) is fixedly connected with the housing (1);

The lower end of the pressure release valve upper cover (134) is provided with a sealing end (1341), and the pressure release valve upper cover (134) is provided with a joint surface (1342) jointed with the shell (1).