CN214789241U

CN214789241U - Pressure reducing valve and water purification system

Info

Publication number: CN214789241U
Application number: CN202120623255.9U
Authority: CN
Inventors: 张巧娜; 马清水; 詹火生; 祝传宝
Original assignee: Xiamen Lota International Co Ltd
Current assignee: Xiamen Lota International Co Ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-11-19
Anticipated expiration: 2031-03-26

Abstract

The utility model relates to a pressure reducing valve, include: the base body is provided with a first water passing channel, a second water passing channel and a first water passing hole for communicating the first water passing channel and the second water passing channel; the piston shaft rod is movably arranged in the first water passing channel and comprises a long rod part passing through the first water passing hole and a pressure reducing part arranged on the long rod part; and an elastic member elastically compressed between the base and the piston shaft; the piston shaft is configured to: when the water pressure passing through the water passing channel is greater than a preset initial pressure value, the water passing channel moves towards the direction opposite to the water flow, so that the pressure reducing part moves relative to the first water passing hole to reduce the water passing sectional area of the first water passing hole, and the purpose of reducing and adjusting the water pressure is achieved.

Description

Pressure reducing valve and water purification system

Technical Field

The utility model relates to a belong to the relief pressure valve field, concretely relates to relief pressure valve and water purification system.

Background

The water purifier is a small filter used in a household, and is also called a water purifier. Water purifiers on the existing market are provided with pressure reducing valves, but the structure types are not rich enough, the structure is complex, and the assembly procedure is complicated. In view of the above problems, the inventors have filed the present application.

SUMMERY OF THE UTILITY MODEL

Based on the above problem, the utility model provides a aim at providing a relief pressure valve and water purification system, aim at providing a simple structure's relief pressure valve at least.

The utility model discloses a realize like this, first aspect, the utility model provides a relief pressure valve, include:

the base body is provided with a first water passing channel, a second water passing channel and a first water passing hole for communicating the first water passing channel and the second water passing channel;

the piston shaft rod is movably arranged in the first water passing channel and comprises a long rod part passing through the first water passing hole and a pressure reducing part arranged on the long rod part; and

an elastic member elastically compressed between the base and the piston shaft;

the piston shaft is configured to: when the water pressure passing through the water passing channel is greater than a preset initial pressure value, the water flowing through the water passing channel moves in the direction opposite to the water flow, so that the pressure reducing part moves relative to the first water passing hole to reduce the water passing sectional area of the first water passing hole.

Preferably, the piston shaft rod divides the first water passing channel into a first chamber and a second chamber, and comprises a second water passing hole for communicating the first chamber and the second chamber; in the water flow direction, the water pressure area of the first end surface of the piston shaft lever, which is close to one side of the first water through hole, is larger than the water pressure area of the second end surface opposite to the end surface.

Preferably, the initial pre-tightening force of the elastic component for supporting the substrate and the piston shaft rod is the product of the difference value of the area of the first end face and the area of the second end face and the preset initial pressure value; and if the elastic coefficient of the elastic component is K and the initial compression amount is X1, the initial pre-tightening force is K X1.

Preferably, the piston shaft rod is provided with a sealing piece, and when the water pressure passing through the water passing channel is not less than a preset limit pressure value, the sealing piece abuts against the base body and seals the first water passing hole; when the water pressure is lower than a preset limit pressure value, the elastic component pushes the piston shaft rod to move so as to open the first water through hole.

Preferably, when the closing piece abuts against the base body, the ultimate elastic force value of the elastic component is the product of the difference value of the area of the first end face and the area of the second end face and the preset ultimate pressure value; and if the elastic coefficient of the elastic component is K and the limit compression amount is X2, the limit elastic value is K X2.

Preferably, an end edge of the first through hole is configured as a flange portion that protrudes toward the seal, and the seal abuts on the flange portion.

Preferably, the pressure reducing portion is disposed in the second water passing channel and is configured to be a structure with a radial size gradually increasing along a direction away from the first water passing hole, and when the piston shaft lever is pushed by the water pressure to move, the pressure reducing portion moves into the first water passing hole and gradually reduces the water passing sectional area of the first water passing hole in the moving process.

Preferably, the substrate comprises:

an upper valve housing having a protruding ring forming the first water through hole, the piston rod abutting against the protruding ring under the pressure of an elastic component and having an outer periphery sliding-fitted with the upper valve housing through a first sealing member, a movable chamber for accommodating the elastic component being formed between the piston rod and the upper valve housing;

the fixed seat is provided with a wall part, one end of the outer periphery of the fixed seat is abutted against the upper valve shell, and the inner peripheral surface of the piston rod is in sliding fit with the wall part through a second sealing element to form a sealed first water passing channel; and

and the lower valve shell is detachably connected with the upper valve shell and fixes the fixed seat, and the elastic component abuts between the fixed seat and the piston rod.

Preferably, the upper valve casing is provided with an air hole communicating the movable chamber with an external space.

In a second aspect, the utility model provides a water purification system in addition, including the aforesaid arbitrary relief pressure valve, the relief pressure valve is including the water inlet of the first water channel of intercommunication and the delivery port of the second water channel of intercommunication, the delivery port is used for the intercommunication purifier.

By adopting the technical scheme, the utility model discloses can gain following technological effect:

the utility model provides an among the above scheme provide a relief pressure valve, it cooperates through setting up piston shaft pole, elastomeric element, decompression portion and base member, simple structure, simple to operate reaches hydraulic purpose of automatically regulated when water pressure changes promptly.

Drawings

Fig. 1 is an exploded schematic view of the pressure reducing valve of the present invention;

FIG. 2 is a schematic cross-sectional view of the pressure reducing valve of the present invention;

fig. 3 is a schematic cross-sectional view of the pressure reducing valve according to the present invention, wherein the pressure reducing valve is shown in a state where the hydraulic pressure is greater than P1 and less than P2;

fig. 4 is a schematic cross-sectional view of the pressure reducing valve according to the present invention, wherein the pressure reducing valve is shown in a state where the hydraulic pressure is greater than P2.

Reference symbols of the drawings

1. A substrate; 2. an upper valve shell; 21. a first water passage; 211. a second chamber; 212. a first chamber; 22. a second water passage; 23. a first water through hole; 24. air holes; 3. a lower valve housing; 4. a fixed seat; 5. a piston shaft; 51. a sliding member; 511. a first sliding section; 512. a second sliding section; 52. a long rod part; 53. sealing the mounting portion; 54. a closure; 55. a second water through hole; 56. a decompression section; 6. an elastic member; 7. a third seal.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "upper end", "lower end", "upper section", "lower section", "upper side", "lower side", "middle", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The structure and function of the solution of the present application will now be described in detail with reference to fig. 1 to 4.

The utility model provides a water purification system (not shown) and relief pressure valve, water purification system is including this relief pressure valve and a purifier. The water inlet of the pressure reducing valve is communicated with a water source, and the water outlet of the pressure reducing valve is communicated with the water purifier. The pressure reducing valve is arranged between the water source and the water purifier to provide water flow with proper water pressure for the water purifier.

Referring to fig. 1 and 2, the pressure reducing valve includes a base 1, a piston shaft 5, and an elastic member 6. Base member 1 is including having last valve casing 2, lower valve casing 3 and fixing base 4. The lower valve shell 3 is provided with a water inlet, and the upper valve opening is provided with a water outlet for communicating with the water purifier. The piston rod 5 is arranged on the upper valve housing 2 and is arranged movably in the axial direction relative to the upper valve housing 2. Upper valve casing 2 has first water passageway 21 and second water passageway 22, and two water passageways communicate through first water hole 23, and fixing base 4 sets up on upper valve casing 2 for support piston rod 5 in first water passageway 21, lower valve casing 3 detachably connects on upper valve casing 2, and fixed bearing after the installation fixing base 4, wherein, lower valve casing 3 and fixing base 4 pass through 7 butts of third sealing member.

A protruding ring is arranged inside the upper valve housing 2 and forms the first water through hole 23. The piston shaft 5 has a slide member 51, a long rod portion 52, and a decompression portion 56. The slide member 51 includes a first slide portion 511 and a second slide portion 512, and the first slide portion 511 is slidably fitted to the inner peripheral side of the upper valve casing 2 via a first seal. The second sliding portion 512 is slidably engaged with the fixing base 4 through a second sealing member, wherein the fixing base 4 has a wall portion for slidably engaging with the second sealing member. The sliding member 51 has a sliding wall, an inner peripheral surface of the sliding wall forms the second sliding portion 512, a movable chamber is formed between the outer peripheral surface of the sliding wall and the upper valve housing 2 for loading the elastic member 6, and two ends of the elastic member 6 along the axial direction are respectively abutted against the convex ring and the fixed seat 4. Wherein, set up the air vent 24 that communicates the activity cavity and exterior space on last valve casing 2 to prevent that the activity cavity from changing too big when the piston rod pole 5 moves about.

The sliding member 51 of the piston shaft 5 is connected to the long rod portion 52 by a plate-shaped barrel bottom structure, which divides the first water passage 21 into a first chamber 212 and a second chamber 211. The plate-shaped structure is provided with at least one second water through hole 55, and the first cavity 212 and the second cavity 211 are communicated through the second water through hole 55. The long rod portion 52 extends axially through the first water passing hole 23 and partially within the second water passing channel 22. In the water flow direction, the water pressure area of the first end surface of the plate-like structure of the piston rod 5 on the side close to the first water through hole 23 is larger than the water pressure area of the second end surface opposite to the first end surface, so that the piston rod 5 can push the piston rod 5 to move from the first end surface side to the second end surface side under the water pressure.

Initially, the elastic member 6 is pre-compressed between the piston shaft 5 and the base body 1. The initial pretightening force of the elastic component 6 for supporting the substrate 1 and the piston shaft rod 5 is the product of the difference value of the area of the first end face and the area of the second end face and the preset initial pressure value. And if the elastic coefficient of the elastic component 6 is K and the initial compression amount is X1, the initial pre-tightening force is K X1. That is, the initial preload F1 is K × X1 is (S1-S2) P1, where P1 is a preset initial pressure value, that is, a pressure value at which the piston rod 5 moves, S1 is an area of the first end face, and S2 is an area of the second end face, and when the water pressure is greater than the preset initial pressure value P1, the piston rod 5 moves under the pushing of the water pressure.

Referring to fig. 3, the long rod part 52 is provided with a pressure reducing part 56, the pressure reducing part 56 is arranged in the second water passing channel 22 and is configured to be gradually increased in radial size along a direction away from the first water passing hole 23, when the water pressure is greater than P1 to push the piston rod 5 to move, the pressure reducing part 56 moves into the first water passing hole 23 and gradually reduces the water passing sectional area of the first water passing hole 23 during the moving process, at this time, the flow rate is increased, and the water pressure is reduced.

Referring to fig. 4, the long rod portion 52 has a closing attachment portion 53 on a section on the downstream side of the pressure reducing portion 56, on which a closing member 54 is disposed, and when the pressure of the water passing through the water passing passage is not more than a predetermined limit pressure value, the closing member 54 abuts against the base 1 and closes the first water passing hole 23. When the closing piece 54 abuts against the base body 1, the ultimate elastic force value of the elastic component 6 is the product of the difference value of the area of the first end face and the area of the second end face and the preset ultimate pressure value; wherein, the elastic coefficient of the elastic component 6 is K, the limit compression amount is X2, and then the limit elastic value is K X2. That is, the limit elastic force value F2 of the elastic member 6 is K × X2 (S1-S2) × P2, where P2 is the maximum allowable pressure of the hydraulic pressure, the limit elastic force value is the elastic force value corresponding to the elastic member 6 at the time of the maximum allowable pressure, and the limit compression amount X2 is the maximum compression amount of the elastic member 6 when the closure 54 abuts on the first water passing hole 23, and the elastic member 6 may be one or more compression springs. When the water pressure is smaller than the preset limit pressure value, the elastic component 6 pushes the piston shaft rod 5 to reset, and the first water passing hole 23 is opened.

The edge of the first via hole is configured as a flange portion protruding toward the seal, and the seal abuts against the flange portion to reduce a contact area between the seal and the flange portion, thereby achieving an effect of enabling complete sealing. Wherein the closure can be made of a silicone rubber material.

The utility model discloses a scheme is through the cooperation of above-mentioned well piston shaft pole 5, elastomeric element 6, decompression portion 56 and base member 1, simple structure, simple to operate can realize adjusting hydraulic purpose automatically.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure reducing valve, comprising:

an elastic member elastically compressed between the base and the piston shaft;

2. The pressure reducing valve according to claim 1, wherein the piston shaft divides the first water passage into a first chamber and a second chamber, and includes a second water passing hole communicating the first chamber and the second chamber; in the water flow direction, the water pressure area of the first end surface of the piston shaft lever, which is close to one side of the first water through hole, is larger than the water pressure area of the second end surface opposite to the end surface.

3. The pressure reducing valve according to claim 2, wherein the initial pre-tightening force of the elastic component for supporting the base body and the piston shaft is a product of a difference value between the area of the first end face and the area of the second end face and the preset initial pressure value; and if the elastic coefficient of the elastic component is K and the initial compression amount is X1, the initial pre-tightening force is K X1.

4. The pressure reducing valve according to claim 2, wherein a closing member is provided on the piston shaft, and abuts against the base and closes the first water passing hole when the pressure of the water passing through the water passing passage is not less than a preset limit pressure value; when the water pressure is lower than a preset limit pressure value, the elastic component pushes the piston shaft rod to move so as to open the first water through hole.

5. The pressure relief valve of claim 4, wherein the ultimate elastic force value of the elastic member is a product of a difference between an area of the first end face and an area of the second end face and the preset ultimate pressure value when the closure abuts the base; and if the elastic coefficient of the elastic component is K and the limit compression amount is X2, the limit elastic value is K X2.

6. The pressure reducing valve according to claim 4, wherein an end edge of the first water passing hole is configured as a flange portion that protrudes toward the closure, and the closure abuts on the flange portion.

7. The pressure reducing valve according to claim 1, wherein the pressure reducing portion is disposed in the second water passing passage and configured to have a structure in which a radial dimension thereof gradually increases in a direction away from the first water passing hole, and when the piston shaft is pushed by the water pressure to move, the pressure reducing portion moves into the first water passing hole and gradually reduces a water passing sectional area of the first water passing hole during the movement.

8. The pressure relief valve of claim 1, wherein the base comprises:

9. The pressure reducing valve according to claim 8, wherein the upper valve housing is provided with an air hole communicating the movable chamber with an external space.

10. A water purification system, comprising the pressure reducing valve according to any one of claims 1 to 9, wherein the pressure reducing valve comprises a water inlet communicated with the first water passage and a water outlet communicated with the second water passage, and the water outlet is communicated with a water purifier.