CN219221275U

CN219221275U - Negative pressure valve and drinking water system

Info

Publication number: CN219221275U
Application number: CN202320678087.2U
Authority: CN
Inventors: 何新农
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-06-20
Anticipated expiration: 2033-03-31

Abstract

The utility model discloses a negative pressure valve, which comprises a valve body, a valve core assembly and an elastic diaphragm, wherein the valve body is provided with a water inlet cavity, an installation cavity and a valve port; the water inlet cavity is communicated with the water outlet cavity through the valve port, and the air pressure cavity is communicated with the outside; the valve core assembly comprises a valve rod and a valve cap, one end of the valve rod is connected with the valve cap, and the other end of the valve rod is connected with the elastic membrane; the valve cap is arranged in the water inlet cavity and used for opening or closing the valve port; the utility model also discloses a drinking water system comprising the negative pressure valve; the drinking water system with the negative pressure valve structure has the advantages that the negative pressure valve has the function of intercepting, can serve as a one-way valve for use, can regulate water flow, does not need to additionally arrange a flow regulating valve, does not need to arrange a one-way valve, and has a simple structure, so that the development difficulty and the manufacturing cost of enterprises are reduced.

Description

Negative pressure valve and drinking water system

Technical Field

The utility model relates to the technical field of water valves, in particular to a negative pressure valve and a drinking water system.

Background

General drinking water systems such as tea boiler products are usually provided with a water tank, the water tank plays a role in storing water, when the tea boiler is filled with water, the water tank can pump water through a tea boiler booster pump to work, and barreled water is directly pumped into the tea boiler, so that the water adding function is achieved. The water source of the water tank is usually pressureless, so that water is required to be supplied through the booster pump, but because the flow is required to be regulated, an additional flow regulating valve and a check valve are required to be arranged, and the water tank is complex in structure and high in cost.

Disclosure of Invention

The utility model aims to provide a negative pressure valve and a drinking water system, which can effectively solve the problem of high manufacturing cost caused by complex structure of the existing drinking water system.

The technical problems are solved by the following technical scheme:

the negative pressure valve comprises a valve body, a valve core assembly and an elastic diaphragm, wherein the valve body is provided with a water inlet cavity, an installation cavity and a valve port, and the elastic diaphragm is arranged in the installation cavity and seals and separates the installation cavity into a water outlet cavity and an air pressure cavity; the water inlet cavity is communicated with the water outlet cavity through the valve port, and the air pressure cavity is communicated with the outside; the valve core assembly comprises a valve rod and a valve cap, one end of the valve rod is connected with the valve cap, and the other end of the valve rod is connected with the elastic membrane; the valve cap is arranged in the water inlet cavity and used for opening or closing the valve port.

Compared with the background technology, the negative pressure valve has the following beneficial effects:

the negative pressure valve is applied to the drinking water system, the water outlet cavity of the negative pressure valve is communicated with the water pump, the water inlet cavity is communicated with the water tank, the water pump works, negative pressure is generated in the water outlet cavity, the pressure of the air pressure cavity is larger than that of the water outlet cavity due to the fact that the air pressure cavity is communicated with the outside, the elastic diaphragm is enabled to deform towards the direction of the valve port, the valve rod is driven to move to open the valve port, so that water supply of the drinking water system is achieved, the valve rod opening amplitude is determined by negative pressure, the use of adjustable water outlet flow is met, when the negative pressure disappears, the negative pressure valve water outlet cavity is restored to normal pressure, the elastic diaphragm is restored to deform, the valve rod moves to close, water supply to the drinking water system is stopped, the function of stopping is achieved, the water pump can serve as a one-way valve, the one-way valve is not needed to be additionally arranged, the structure is simple, and the development difficulty and the manufacturing cost of enterprises are reduced.

In one embodiment, the valve body comprises an upper cover, a shell and a base, wherein the upper cover and the base are respectively arranged on the upper side and the lower side of the shell, and the upper cover is separated from the shell to form the water inlet cavity; the base is separated from the shell to form the mounting cavity; the valve port is disposed at an upper position of the housing.

In one embodiment, the elastic membrane comprises a deformation portion and a mounting portion, the mounting portion is connected to a circle of the deformation portion, the mounting portion is fixedly arranged on the valve body, and the valve rod is mounted at the center of the upper end face of the deformation portion.

In one embodiment, an annular protrusion is disposed at the lower end of the housing, a slot for plugging the annular protrusion is disposed on the base, and the annular protrusion compresses the mounting portion of the elastic membrane on the bottom surface of the slot.

The drinking water system comprises a water tank, a water pump and the negative pressure valve, wherein the water outlet cavity is communicated with the water pump, and the water inlet cavity is communicated with the water tank.

Compared with the background technology, the beneficial effects are that:

the water outlet cavity and the water pump of negative pressure valve communicate, the water inlet cavity communicates with the water tank, during the use, the water pump works, form in the water outlet cavity and produce the negative pressure, because atmospheric pressure chamber communicates with the external world, consequently, the pressure in atmospheric pressure chamber is greater than the pressure in water outlet cavity, make elastic diaphragm to the valve port direction deformation, drive the valve rod activity and open the valve port, thereby realize drinking water system's water supply, the valve rod opens the range and is decided by negative pressure, satisfy adjustable play water flow's use, when negative pressure vanishes, the negative pressure valve goes out the water cavity and resumes the normal pressure, elastic diaphragm resumes deformation, the valve rod activity is closed, stop supplying water to drinking water system, play the effect of shutoff, can act as the check valve and use, need not to set up the flow control valve in addition also need not to set up the check valve, and a structure is simple, reduce the enterprise and develop the degree of difficulty and manufacturing cost.

Drawings

FIG. 1 is an exploded view of the structure of the negative pressure valve of the present utility model;

FIG. 2 is a cross-sectional view of the negative pressure valve of the present utility model.

Description of the reference numerals:

1. a valve body; 10. a water inlet cavity; 11. a mounting cavity; 110. a water outlet cavity; 111. an air pressure chamber; 12. a valve port; 13. an upper cover; 14. a housing; 140. an annular protrusion; 15. a base; 150. a slot; 2. a valve core assembly; 20. a valve stem; 21. a valve cap; 3. an elastic membrane; 30. a deformation section; 31. and a mounting part.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that, if the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. indicate or refer to an orientation or a positional relationship based on that shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or the like, may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The embodiment provides a negative pressure valve, as shown in fig. 1-2, which comprises a valve body 1, a valve core assembly 2 and an elastic membrane 3, wherein the valve body 1 is provided with a water inlet cavity 10, a mounting cavity 11 and a valve port 12, and the elastic membrane 3 is arranged in the mounting cavity 11 and seals and separates the mounting cavity 11 into a water outlet cavity 110 and an air pressure cavity 111; the water inlet cavity 10 is communicated with the water outlet cavity 110 through the valve port 12, and the air pressure cavity 111 is communicated with the outside; the valve core assembly 2 comprises a valve rod 20 and a valve cap 21, wherein one end of the valve rod 20 is connected with the valve cap 21, and the other end of the valve rod is connected with the elastic membrane 3; the valve cap 21 is disposed in the water inlet chamber 10, and is used for opening or closing the valve port 12.

On the basis of the structure, the negative pressure valve is applied to a drinking water system, the water outlet cavity 110 of the negative pressure valve is communicated with the water pump, the water inlet cavity 10 is communicated with the water tank, when the negative pressure valve is used, the water pump works, negative pressure is generated in the water outlet cavity 110, because the air pressure cavity 111 is communicated with the outside, the pressure of the air pressure cavity 111 is larger than that of the water outlet cavity 110, the elastic membrane 3 is caused to deform towards the valve port 12, the valve rod 20 is driven to movably open the valve port 12, thereby realizing the water supply of the drinking water system, the opening amplitude of the valve rod 20 is determined by the negative pressure, the use of adjustable water outlet flow is met, when the negative pressure disappears, the elastic membrane 3 is deformed in a recovery mode when the negative pressure valve outlet cavity 110 is restored to normal pressure, the valve rod 20 is movably closed, the water supply to the drinking water system is stopped, the negative pressure valve can be used as a one-way valve, the flow regulating valve is not required to be additionally arranged, the structure is simple, and the development difficulty and the manufacturing cost of enterprises are reduced.

Preferably, in the present embodiment, the valve body 1 includes an upper cover 13, a housing 14, and a base 15, the upper cover 13 and the base 15 are respectively installed on the upper and lower sides of the housing 14, and the upper cover 13 is spaced from the housing 14 to form the water inlet chamber 10; the base 15 is separated from the shell 14 to form the mounting cavity 11; the valve port 12 is disposed in an upper position of the housing 14.

In this embodiment, the upper cover 13 and the base 15 are respectively connected to the housing 14 by screwing screws.

In this embodiment, the elastic membrane 3 includes a deformation portion 30 and an installation portion 31, the installation portion 31 is connected to a circle of the deformation portion 30, the installation portion 31 is fixedly disposed on the valve body 1, and the valve rod 20 is installed at a center of an upper end surface of the deformation portion 30, so that the valve rod 20 is disposed at the center of the deformation portion 30, and the operation is stable and is not easy to move.

In this embodiment, an annular protrusion 140 is disposed at the lower end of the housing 14, a slot 150 into which the annular protrusion 140 is inserted is disposed on the base 15, and the annular protrusion 140 presses the mounting portion 31 of the elastic membrane 3 against the bottom surface of the slot 150; thus, the mounting portion 31 is not easily slid, and the working stability of the elastic membrane 3 is improved.

The drinking water system comprises a water tank, a water pump and the negative pressure valve, wherein the water outlet cavity 110 is communicated with the water pump, and the water inlet cavity 10 is communicated with the water tank.

The drinking water system comprises the negative pressure valve, so that the technical effect is brought by the negative pressure valve, and the beneficial effect is the same as that of the negative pressure valve, and the details are not repeated.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, 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 foregoing detailed description of the embodiments presents only a few embodiments of the present utility model, which are described in some detail and are not intended to limit the scope of the present 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.

Claims

1. A negative pressure valve, characterized by: the valve body is provided with a water inlet cavity, an installation cavity and a valve port, and the elastic diaphragm is arranged in the installation cavity and seals and separates the installation cavity into a water outlet cavity and an air pressure cavity; the water inlet cavity is communicated with the water outlet cavity through the valve port, and the air pressure cavity is communicated with the outside; the valve core assembly comprises a valve rod and a valve cap, one end of the valve rod is connected with the valve cap, and the other end of the valve rod is connected with the elastic membrane; the valve cap is arranged in the water inlet cavity and used for opening or closing the valve port.

2. The negative pressure valve of claim 1, wherein the valve body comprises an upper cover, a shell and a base, the upper cover and the base are respectively arranged on the upper side and the lower side of the shell, and the upper cover and the shell are separated to form the water inlet cavity; the base is separated from the shell to form the mounting cavity; the valve port is disposed at an upper position of the housing.

3. The negative pressure valve according to claim 2, wherein the elastic diaphragm comprises a deformation portion and a mounting portion, the mounting portion is connected to a circumference of the deformation portion, the mounting portion is fixedly arranged on the valve body, and the valve rod is mounted at a center of an upper end face of the deformation portion.

4. The negative pressure valve of claim 3, wherein the lower end of the housing is provided with an annular protrusion, the base is provided with a slot for the annular protrusion to be inserted, and the annular protrusion presses the mounting part of the elastic membrane to the bottom surface of the slot.

5. A potable water system characterized by: comprising a water tank, a water pump and a negative pressure valve according to any one of claims 1-4, said water outlet chamber being in communication with said water pump, said water inlet chamber being in communication with said water tank.