CN219159627U

CN219159627U - Micro exhaust valve

Info

Publication number: CN219159627U
Application number: CN202320391085.5U
Authority: CN
Inventors: 柯静
Original assignee: Kc Val Shanghai Co ltd
Current assignee: Kc Val Shanghai Co ltd
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-06-09
Anticipated expiration: 2033-03-06

Abstract

The application discloses a micro exhaust valve, which comprises a valve body, a floating piece, a jacking column and a flexible sealing piece, wherein the floating piece, the jacking column and the flexible sealing piece are arranged in a valve cavity of the valve body, an exhaust channel is arranged at the top end of the valve body, a liquid inlet is arranged at the bottom end of the valve body, an opening of the exhaust channel, which is close to the valve cavity, is a kidney-shaped exhaust port, the kidney-shaped exhaust port extends from a low end to a high end in an inclined manner along the inner side wall of the valve cavity, and the high end is kept at a preset distance from the top wall of the valve cavity; the jack-up is L type, and the vertical portion of jack-up is connected to the floating member, and the top of jack-up is connected to the one end of flexible sealing member, and the inside wall of valve pocket is connected to the other end, and is close to the low end of kidney-shaped gas vent when floating member come-up, drive flexible sealing member through the horizontal part and seal kidney-shaped gas vent gradually, and when floating member whereabouts, drive flexible sealing member through the jack-up and open kidney-shaped gas vent gradually, and then improved the easy degree of opening and closing exhaust passage, can effectively improve the displacement through increasing the gas vent area simultaneously.

Description

Micro exhaust valve

Technical Field

The utility model relates to the technical field of exhaust valve equipment, in particular to a micro exhaust valve.

Background

At present, the maximum diameter of the vent hole of the micro-exhaust valve is generally about 1.6mm due to the limit of the structure of the micro-exhaust valve, and the exhaust capacity is low.

Under the normal pressure (1.0 MPa or 1.6 MPa), the exhaust quantity of the exhaust port of the micro exhaust valve does not influence the normal use, but when the system pressure is higher, such as 2.5MPa or 4.0MPa, the internal pressure and the external pressure at the exhaust port are large due to the higher internal pressure, even if the air in the exhaust valve is accumulated in the floating piece and completely suspended in the internal air, the exhaust port can only be partially opened under the action of the maximum moment generated by the gravity of the floating piece and the moving assembly, and even the situation that the exhaust port cannot be completely opened still occurs.

Disclosure of Invention

The utility model has the advantages that the micro exhaust valve is provided, wherein the exhaust passage is close to the opening of the valve cavity and is a kidney-shaped exhaust port, meanwhile, the floating piece in the valve cavity is connected with the flexible sealing piece through the jack post, the other end of the flexible sealing piece is connected to the inner side wall of the valve cavity and is close to the lower end of the kidney-shaped exhaust port, when the floating piece floats upwards, the jack post drives the flexible sealing piece to move from the lower end to the higher end of the kidney-shaped exhaust port to gradually seal the kidney-shaped exhaust port, and when the floating piece falls, the jack post drives the flexible sealing piece to move from the higher end to the lower end of the kidney-shaped exhaust port to gradually seal the kidney-shaped exhaust port, so that the rolling curtain type sealing and opening effects are formed, the exhaust valve can gradually open and close the exhaust, the exhaust passage is opened easily, the exhaust amount can be effectively improved by increasing the area of the exhaust port, and the exhaust passage can be completely opened even under a high-pressure working condition (2.5 MPa or 4.0 MPa).

The utility model has the advantages that the floating piece and the top column are movably connected, when the liquid level of the valve cavity rises or falls, the top column is correspondingly pushed upwards or pulled downwards by the floating piece, and the flexible sealing piece is driven by the top column to gradually close or gradually open the exhaust channel, so that the buoyancy of the floating piece can be fully acted on the flexible sealing piece, the friction loss of a conventional connecting rod structure is avoided, and the sensitivity and the reliability of closing and opening the exhaust channel are effectively improved.

In order to achieve at least one of the above advantages, the utility model provides a micro exhaust valve, comprising a valve body, a floating member and a jack post, wherein the floating member and the jack post are arranged in a valve cavity of the valve body, an exhaust channel communicated with the valve cavity is arranged at the top end of the valve body, a liquid inlet communicated with the valve cavity is arranged at the bottom end of the valve body, an opening of the exhaust channel close to the valve cavity is a kidney-shaped exhaust port, the kidney-shaped exhaust port is provided with a low end and a high end which are opposite, the kidney-shaped exhaust port extends obliquely from the low end to the high end along the inner side wall of the valve cavity, and the high end is kept at a preset distance from the top wall of the valve cavity;

the valve body is further provided with a flexible sealing element in the valve cavity, the jack-prop is L-shaped and is provided with a vertical part and a horizontal part, the floating element is connected with the vertical part, one end of the flexible sealing element is connected with the top of the jack-prop, the other end of the flexible sealing element is connected with the inner side wall of the valve cavity and is close to the low end of the kidney-shaped exhaust port, so that when the floating element floats upwards, the flexible sealing element can be driven by the horizontal part to move from the low end to the high end to gradually seal the kidney-shaped exhaust port, and when the floating element falls, the flexible sealing element can be driven by the jack-prop to move from the high end to the low end to gradually open the kidney-shaped exhaust port.

According to an embodiment of the utility model, the flexible seal is implemented as a flexible rubber sealing strip.

According to an embodiment of the utility model, the float is embodied as a float ball.

According to an embodiment of the utility model, the floating member and the top column are movably connected.

According to the embodiment of the utility model, the top of the floating piece is provided with the dovetail groove, and the bottom end of the jacking column is correspondingly provided with the limiting protrusion, so that the jacking column can be embedded in the dovetail groove in an up-and-down movable mode through the limiting protrusion.

According to an embodiment of the utility model, the flexible seal is connected to the high end of the upright.

According to an embodiment of the present utility model, the horizontal portion is an arc surface extending structure, and the arc surface extending structure extends toward a side gradually approaching the liquid inlet.

These and other objects, features and advantages of the present utility model will become more fully apparent from the following detailed description.

Drawings

Fig. 1 is a schematic cross-sectional view of a micro air release valve according to a preferred embodiment of the present utility model when the micro air release valve is partially opened.

Fig. 2 is a schematic cross-sectional view of the micro air release valve according to a preferred embodiment of the present utility model when the micro air release valve is fully opened.

Fig. 3 is a schematic cross-sectional view showing the structure of the micro exhaust valve in a preferred embodiment of the present utility model when the micro exhaust valve is completely closed.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be appreciated by those skilled in the art that in the disclosure of the present specification, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, the above terms should not be construed as limiting the present utility model.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Referring to fig. 1 to 3, a micro exhaust valve according to a preferred embodiment of the present utility model will be described in detail below, wherein the micro exhaust valve includes a valve body 10, and a float member 20, a top column 30 and a flexible seal member 40 disposed in a valve cavity 101 of the valve body 10, wherein the float member 20 is preferably implemented as a float ball, wherein a top end of the valve body 10 is provided with an exhaust passage 102 communicating with the valve cavity 101, and a bottom end of the valve body 10 is provided with a liquid inlet 103 communicating with the valve cavity 101 for introducing liquid into the valve cavity 101 or releasing liquid in the valve cavity 101, thereby maintaining the valve cavity 101 at a certain liquid level (including a liquid level of 0, i.e., in the absence of liquid in the valve cavity);

further, the exhaust passage 102 is a kidney-shaped exhaust port 104 adjacent to the opening of the valve chamber 101, wherein the kidney-shaped exhaust port 104 has a low end and a high end opposite to each other, wherein the kidney-shaped exhaust port 104 extends obliquely along the inner side wall of the valve chamber 101 from the low end to the high end, or extends in an arc shape depending on the shape of the inner side wall of the valve chamber 101, that is, the kidney-shaped exhaust port 104 is formed directly on the inner side wall of the valve chamber 101 while the high end is kept at a predetermined distance from the top wall of the valve chamber 101 to give the flexible seal member 40 a space capable of completely sealing the kidney-shaped exhaust port 104;

in addition, the top pillar 30 is L-shaped and has a vertical portion 31 and a horizontal portion 32, wherein the floating member 20 is connected to the vertical portion 31, meanwhile, one end of the flexible sealing member 40 is connected to the top of the top pillar 30, and the other end of the flexible sealing member 40 is connected to the inner side wall of the valve cavity 101 and is close to the lower end of the kidney-shaped exhaust port 104, meanwhile, when the floating member 20 floats up, the floating member 20 can drive the flexible sealing member 40 to move from the lower end to the higher end through the horizontal portion 32 to gradually seal the kidney-shaped exhaust port 104, and when the floating member 20 falls down, the floating member 20 can drive the flexible sealing member 40 to move from the higher end to the lower end through the top pillar 30 to gradually open the kidney-shaped exhaust port 104.

Specifically, since the opening of the air exhaust passage 102 near the valve cavity 101 is a kidney-shaped air exhaust port 104, when the floating member 20 drives the flexible sealing member 40 to move downward through the top post 30, the kidney-shaped air exhaust port 104 is gradually torn by the inner side wall of the valve cavity 101 by the flexible sealing member 40, so that the air exhaust passage 102 is easier to open, and under the buoyancy effect, when the floating member 20 and the top post 30 gradually float upwards, and when high-pressure air flow in the valve cavity 101 is exhausted, the exhausted air flow can generate an automatic alignment effect, so that the flexible sealing member 40 can be automatically aligned and gradually and completely close the air exhaust passage 102.

Thus, during the closing and opening of the vent passageway 102 by the flexible seal member 40, the sealing surface of the flexible seal member 40 and the kidney-shaped vent 104 are relatively gradually conformed and gradually torn apart, thereby creating a rolling shutter movement along the sealing surface. Such rolling shutter movement along the sealing surface more easily opens or closes the exhaust passage 102, while also being effective in increasing the exhaust volume by increasing the area of the exhaust port of the exhaust passage 102 (i.e., the kidney-shaped exhaust port 104 has a larger area than a conventional circular opening), even under high pressure conditions of 2.5MPa or 4.0 MPa.

In one embodiment, the flexible seal 40 is implemented as a flexible rubber seal strip, or a flexible rubber seal sheet.

In one embodiment, the floating member 20 and the top pillar 30 are movably connected, so that when the liquid level in the valve cavity 101 rises or falls, the floating member 20 pushes the top pillar 30 to move upwards or pulls the top pillar 30 to descend, so as to drive the flexible sealing member 40 to close or tear the kidney-shaped air outlet 104, the buoyancy force (upward movement process) of the floating member 20 or the gravity force (downward movement process) of the floating member 20 and the top pillar 30 can all act on the flexible sealing member 40, and further the sensitivity and reliability of closing and opening the kidney-shaped air outlet 104 can be effectively improved relative to a conventional connecting rod structure (a certain amount of friction loss exists).

Further preferably, the top of the floating member 20 is provided with a dovetail groove 201, and at the same time, the bottom end of the top post 30 is correspondingly provided with a limiting protrusion 33, so that the top post 30 can be embedded in the dovetail groove 201 in a vertically movable manner through the limiting protrusion 33.

Further preferably, the flexible seal 40 is connected to the high end of the upright 31.

In one embodiment, the horizontal portion 32 is an arc extending structure, and at the same time, the arc extending structure extends towards a side gradually approaching to the liquid inlet 103, so that the flexible sealing element 40 can be effectively protected in the process of driving the flexible sealing element 40 to move, hard contact and hard friction are not easy to occur between the flexible sealing element 40, sealing reliability of the flexible sealing element 40 is ensured, and service life of the flexible sealing element 40 is prolonged.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The advantages of the present utility model have been fully and effectively realized. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.

Claims

1. The micro exhaust valve comprises a valve body, a floating piece and a jacking column, wherein the floating piece and the jacking column are arranged in a valve cavity of the valve body, an exhaust channel communicated with the valve cavity is arranged at the top end of the valve body, and a liquid inlet communicated with the valve cavity is arranged at the bottom end of the valve body;

2. The micro-exhaust valve of claim 1, wherein the flexible seal is implemented as a flexible rubber seal strip.

3. The micro exhaust valve as set forth in claim 1, wherein said float member is embodied as a float ball.

4. A micro-exhaust valve according to claim 3, wherein the float member is movably connected to the top post.

5. The micro exhaust valve according to claim 4, wherein a dovetail groove is formed in the top of the floating member, and a limit protrusion is correspondingly formed at the bottom end of the top column, so that the top column can be embedded in the dovetail groove in an up-and-down movable manner through the limit protrusion.

6. The micro exhaust valve as set forth in claim 4, wherein said flexible seal is connected to the upper end of said upright portion.

7. The micro exhaust valve as set forth in claim 6, wherein said horizontal portion is an arc surface extending structure extending toward a side gradually approaching said liquid inlet.