CN117927713A

CN117927713A - Breathable valve

Info

Publication number: CN117927713A
Application number: CN202310906768.4A
Authority: CN
Inventors: 王光明; 沈磊
Original assignee: Suzhou Pilot Power Technology Co ltd
Current assignee: Suzhou Pilot Power Technology Co ltd
Priority date: 2023-07-24
Filing date: 2023-07-24
Publication date: 2024-04-26

Abstract

The invention discloses a ventilation valve, which comprises a valve cap and a valve body, wherein a protection component for protecting a waterproof ventilation film is arranged in the valve cap, the protection component comprises the waterproof ventilation film, a one-way valve seat, a first valve film and an upper valve body, the waterproof ventilation film is connected with the upper valve body in a glue or welding mode, the one-way valve seat is connected with the upper valve body in an interference or glue mode, the upper end face of a second valve film is connected with the lower end face of the upper valve body, and the lower end face of the second valve film is connected with the upper end face of the valve body. The invention effectively separates the installed internal medium from the waterproof breathable membrane, effectively reduces damage and blockage of the membrane by the internal medium such as oil gas, improves the service life of the membrane, particularly reduces the requirement on the quality of the membrane in the environment containing corrosive medium such as oil gas, and reduces the cost.

Description

Breathable valve

Technical Field

The invention relates to the technical field of air-permeable valves, in particular to an air-permeable valve.

Background

The ventilation valve is a sealed assembly formed by combining ventilation film injection molding, ultrasonic welding and the like. The air-permeable valve mainly comprises a threaded type air-permeable valve, a press-in type air-permeable valve, a buckle type air-permeable valve, a twist-buckle type air-permeable valve and the like, and the air-permeable valve mainly comprises two important indexes: ventilation and protection level.

Venting valves for containers are described in the prior art. The vent valve for a container includes: a bolt including a bolt head portion at an upper portion thereof, a screw portion at a lower portion thereof, and a hollow portion penetrating the bolt longitudinally; a cover disposed over the bolt head for covering the bolt head and forming a vent gap between the cover and the bolt head; and the waterproof breathable film is arranged at the top surface of the bolt head and used for covering the hollow part.

However, the waterproof breathable film in the prior breathable valve in the prior art can be used for conveying substances to be abutted against the waterproof breathable film, so that the waterproof breathable film is easy to wear, the replacement frequency is high, the loss is high, and the use cost is increased.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a breather valve having a long service life.

In order to achieve the above purpose, the present invention provides the following technical solutions: the invention relates to a ventilation valve, which comprises a valve cap and a valve body, wherein a protection component for protecting a waterproof ventilation film is arranged in the valve cap, the protection component comprises the waterproof ventilation film, a one-way valve seat, a first valve film and an upper valve body, the waterproof ventilation film is connected with the upper valve body, the one-way valve seat is fixedly connected with the upper valve body, the upper end face of a second valve film is connected with the lower end face of the upper valve body, and the lower end face of the second valve film is connected with the upper end face of the valve body.

Optionally, the waterproof ventilated membrane is connected with the upper valve body through glue or welding, the unidirectional valve seat is fixedly connected with the upper valve body through interference or glue, the valve cap separates an air inlet and an air outlet, and the unidirectional valve seat is covered with a first valve membrane in a flat plate shape.

Optionally, the unidirectional valve seat is mounted in an embedded manner with the upper end face of the upper valve body through the first valve film, and the lower end face of the upper valve body is provided with a spring.

Optionally, the air inlet and the air outlet form an air-permeable groove, and the air-permeable groove is annular and uniformly arranged on the outer wall of the valve cap. The plurality of air inlets and the plurality of air outlets are square or have other shapes.

Optionally, the first valve membrane can be divided into two parts of chassis and bellying, and the chassis sets up in last valve body inside, and the bellying runs through the check valve seat and with check valve seat inner wall looks butt, and the check valve seat is provided with the through-hole that is used for matcing first valve membrane bellying for circular central point put, and waterproof ventilated membrane passes through glue, moulds plastics or is connected with last valve body.

Optionally, the valve cap is fixedly connected with the valve body through a clamping structure.

Optionally, the protruding extension of outer wall of valve body is formed with the assembly external screw thread, is provided with the assembly internal screw thread on the inner wall of valve cap, and the internal screw thread of valve cap and the external screw thread of valve body are connected through the screw thread.

Optionally, the upper valve body is divided into a mounting seat and a vent hole, the second valve film is annular, and the upper end surface of the second valve film is abutted with the lower end surface of the upper valve body through the vent hole.

Optionally, the lower terminal surface of valve body is provided with spliced pole and flange ring, is formed with the assembly ring district between spliced pole and the flange ring, and sealing washer cover is located on the assembly cylinder and is located the assembly ring district, and the lateral wall of lower terminal surface and the spliced pole of flange ring all with sealing washer looks butt.

Optionally, the air-permeable valve further comprises an oil-gas separation structure, and the oil-gas separation structure is fixedly connected with the valve body through a clamping structure.

The beneficial effects are that: the invention effectively separates the installed internal medium from the waterproof breathable membrane, effectively reduces damage and blockage of the membrane by the internal medium such as oil gas, improves the service life of the membrane, particularly reduces the requirement on the quality of the membrane in the environment containing corrosive medium such as oil gas, and reduces the cost.

Compared with the prior art, the invention has the following advantages: (1) The invention adopts the protection component, and the one-way valve film is additionally arranged to enable the entering gas to enter the waterproof and breathable film, but the exiting gas is exhausted through the one-way valve film, so that the exhausted gas is prevented from being abutted against the waterproof and breathable film, the damage to the waterproof and breathable film is reduced, and the service life of the waterproof and breathable film is prolonged.

(2) The oil-gas separation structure of the invention effectively separates oil from gas, so that the discharged gas is cleaner. Meanwhile, the air outlet pressure is controlled by the one-way valve, so that the system reliability of the air permeable valve is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of the overall structure of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is a bottom view of the present invention;

FIG. 5 is a cross-sectional view of a second embodiment of the present invention;

FIG. 6 is a schematic diagram of a connecting column and oil-gas separation structure according to the present invention.

Wherein, each reference sign in the figure: 1, a valve cap; 101 air inlets; 102, an air outlet; 2a waterproof breathable film; 3, a one-way valve seat; 4a first valve membrane; 5, upper valve body; 6a second valve membrane; 7, valve body; 8, a sealing gasket; 9, connecting the columns; a 10 flange ring; 11 an oil-gas separation structure; 12 springs.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, 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" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In another embodiment of the present application, referring to fig. 1-4, the present application includes a valve cap 1 and a valve body 7, a protection component for protecting a waterproof and breathable film 2 is disposed in the valve cap 1, the protection component includes the waterproof and breathable film 2, a unidirectional valve seat 3, a first valve film 4 and an upper valve body 5, the waterproof and breathable film 2 is connected with the upper valve body 5 through the unidirectional valve seat 3, an upper end surface of the upper valve body 5 is fixedly connected with the unidirectional valve seat 3 through the first valve film 4, an upper end surface of a second valve film 6 is fixedly connected with a lower end surface of the upper valve body 5, and a lower end surface of the second valve film 6 is fixedly connected with an upper end surface of the valve body 7.

The valve cap 1 separates an air inlet 101 and an air outlet 102, and the one-way valve seat 3 is covered with a first valve film 4 which is flat.

The ventilation valve is a sealed assembly formed by joining together ventilation films, such as EPTFE, in injection molded, ultrasonic welded, etc. However, when the waterproof breathable film 2 in the existing breathable valves in the prior art is used, substances are conveyed to be abutted against the waterproof breathable film 2, so that the waterproof breathable film 2 is easy to wear, particularly in an oil-gas-containing environment, the waterproof breathable film 2 is damaged or the breathable amount is insufficient, therefore, the replacement frequency is high, the whole system is damaged by verification, the wear caused by the fact that the whole system is damaged is large, and the use cost is increased.

All electrical components in this embodiment are controlled by a conventional controller.

Referring to fig. 1-4, a waterproof and breathable film 2 is inlaid and installed on the inner wall of a valve cap 1, a unidirectional valve seat 3 is inlaid and installed on the inner wall of an upper valve body 5, a first valve film 4 is slidably abutted against the inner wall of the unidirectional valve seat 3, the upper valve body 5 penetrates through a second valve film 6, the second valve film 6 is sleeved outside the upper valve body 5, an air inlet 101 and an air outlet 102 form an air permeable groove, the air permeable groove is annular and uniformly arranged on the outer wall of the valve cap 1, a plurality of air inlets 101 and air outlets 102 are square or other shapes, the first valve film 4 can be divided into a chassis and a protruding part, the chassis is positioned inside the upper valve body 5, the protruding part penetrates through the unidirectional valve seat 3 and is abutted against the inner wall of the unidirectional valve seat 3, the unidirectional valve seat 3 is provided with a through hole for matching the protruding part of the first valve film 4 in a circular center position, the waterproof and breathable film 2 penetrates through a second valve film 6, the upper valve body 5 is divided into a mounting seat and an air vent, the second valve film 6 is of a circular hollow structure, and the second valve film 6 is sleeved on the air vent of the upper valve body 5.

In another embodiment of the present application, referring to fig. 5, the present application may further be provided with a spring 12 on the lower end surface of the upper valve body 5 based on the original scheme. So as to push the second valve membrane 6 to be reset when the internal pressure is smaller than the external pressure.

The ventilation valve is composed of two one-way valve films and a ventilation film, wherein the first valve film 4 controls the medium inside the installation part to enter the film cavity, effectively separates the installed medium from the film, thereby prolonging the service life of the film, especially for oil-containing substances, and the second valve film 6 controls the high pressure inside.

When the internal pressure is greater than the external pressure or the set pressure, the pressure is rapidly released through the check valve, thereby controlling the internal pressure of the valve mounting part. When the valve mounting member is less than the external pressure or the control pressure, the gas passes through the waterproof membrane and opens the first one-way valve into the interior of the mounting member. The one-way valve may be of diaphragm construction, umbrella construction, ball valve, plunger, etc. with or without spring design.

When the internal pressure of the valve body 7 is smaller than the atmospheric pressure in use, gas enters the valve body 7 through the waterproof breathable film 2, meanwhile, the first valve film 4 is opened, the second valve film 6 is closed because the internal gas pressure is smaller than the external atmospheric pressure, when the internal pressure of the valve body 7 is larger than the atmospheric pressure, gas enters the valve body through the diaphragm, meanwhile, the second valve film 6 is opened, and the first valve film 4 is closed because the internal gas pressure is smaller than the external atmospheric pressure. The invention effectively separates the installed internal medium from the membrane, improves the service life of the membrane, and reduces the replacement frequency and cost.

In another embodiment of the present application, as shown in fig. 6, the breather valve further includes an oil-gas separation structure 11, where the oil-gas separation structure is fixedly connected with the valve body through a clamping structure.

The working flow of the invention is as follows: when the internal pressure of the valve body 7 is smaller than the atmospheric pressure in use, gas enters the valve body 7 through the waterproof breathable film 2, meanwhile, the first valve film 4 is opened, the second valve film 6 is closed because the internal gas pressure is smaller than the external atmospheric pressure, when the internal pressure of the valve body 7 is larger than the atmospheric pressure, gas enters the valve body through the diaphragm, meanwhile, the second valve film 6 is opened, and the first valve film 4 is closed because the internal gas pressure is smaller than the external atmospheric pressure. The invention effectively separates the installed internal medium from the membrane, improves the service life of the membrane, and reduces the replacement frequency and cost.

The lower terminal surface of valve body 7 is provided with connecting cylinder 9 and flange ring 10, is formed with the assembly ring district between connecting cylinder 9 and the flange ring 10, and sealing washer 8 cover is located on the assembly cylinder 9 and is located the assembly ring district, and the lateral wall of the lower terminal surface of flange ring 10 and connecting cylinder 9 all with sealing washer 8 looks butt.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An air-permeable valve, comprising a valve cap (1) and a valve body (7), characterized in that: the inside of valve cap (1) is provided with protection subassembly, protection subassembly includes waterproof ventilated membrane (2), check valve seat (3), first valve membrane (4) and last valve body (5), waterproof ventilated membrane (2) with last valve body (5) are connected, check valve seat (3) with last valve body (5) looks rigid coupling, the up end of second valve membrane (6) with the lower terminal surface of last valve body (5) is connected, the lower terminal surface of second valve membrane (6) with the up end of valve body (7) is connected.

2. The ventilation valve of claim 1, wherein: waterproof ventilated membrane (2) with go up valve body (5) and be connected through glue or welding, check valve seat (3) with go up valve body (5) and be linked firmly through interference or glue, air inlet (101) and gas outlet (102) are separated out to valve cap (1), check valve seat (3) are covered and are equipped with first valve membrane (4) that are dull and stereotyped form.

3. The ventilation valve of claim 1, wherein: the one-way valve seat (3) is embedded and installed with the upper end face of the upper valve body (5) through the first valve film (4), and the lower end face of the upper valve body (5) is provided with a spring (12).

4. The ventilation valve of claim 2, wherein: the air inlet (101) and the air outlet (102) form an air-permeable groove, and the air-permeable groove is annular and uniformly arranged on the outer wall of the valve cap (1).

5. The ventilation valve of claim 1, wherein: the first valve membrane (4) can be divided into a chassis and a protruding part, the chassis is arranged inside the upper valve body (5), the protruding part penetrates through the one-way valve seat (3) and is abutted against the inner wall of the one-way valve seat (3), a through hole for matching the protruding part of the first valve membrane (4) is formed in the center of the one-way valve seat (3), and the waterproof breathable membrane (2) is connected with the upper valve body (5) through glue, injection molding or the like.

6. The ventilation valve of claim 1, wherein: the valve cap (1) is fixedly connected with the valve body (7) through a clamping structure.

7. The semi-submersible water resistant and breathable valve of claim 1, wherein: the outer wall of the valve body (7) is protruding to extend to form an assembly external thread, an assembly internal thread is arranged on the inner wall of the valve cap (1), and the internal thread of the valve cap (1) is connected with the external thread of the valve body (7) through threads.

8. The ventilation valve of claim 1, wherein: the upper valve body (5) is divided into an installation seat and a vent hole, the second valve membrane (6) is annular, and the upper end face of the second valve membrane (6) is abutted to the lower end face of the upper valve body (5) through the vent hole.

9. The ventilation valve of claim 1, wherein: the valve body is characterized in that a connecting column body (9) and a flange ring (10) are arranged on the lower end face of the valve body (7), an assembly ring area is formed between the connecting column body (9) and the flange ring (10), the sealing gasket (8) is sleeved on the assembly column body (9) and located in the assembly ring area, and the lower end face of the flange ring (10) and the outer side wall of the connecting column body (9) are in butt joint with the sealing gasket (8).

10. The ventilation valve of claim 1, wherein: the breather valve further comprises an oil-gas separation structure (11), and the oil-gas separation structure (11) is fixedly connected with the valve body (7) through a clamping structure.