CN211667219U

CN211667219U - Self-operated pressure balance valve

Info

Publication number: CN211667219U
Application number: CN201922157297.3U
Authority: CN
Inventors: 吴金海
Original assignee: Zhongshan Dahai Automatic Control Valve Co ltd
Current assignee: Zhongshan Dahai Automatic Control Valve Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-10-13
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a self-operated pressure balance valve, including upper diaphragm cover, clamp plate and push pedal, be equipped with the signal pressure opening in the middle of the upper diaphragm cover, the upper diaphragm cover passes through hexagon bolt fixedly connected with valve body, and is provided with the rubber diaphragm between upper diaphragm cover and the valve body, the inside and the deflector of valve body pass through crew cut bolt fixed connection, the lower extreme fixedly connected with upper seal ring of push pedal, upper seal ring's lateral wall fixedly connected with valve rod, the valve rod inner wall is provided with adverse current pressure release hole, the outer wall fixedly connected with gasket of valve rod, the upper end fixedly connected with lower sealing ring of gasket, the lower extreme fixedly connected with spring of gasket, the lower extreme fixedly connected with lower valve gap of spring. The utility model discloses in, utilize the signal pressure of signal pressure port input to come the aperture of adjusting valve, make the aperture of valve change or keep at a certain aperture along with signal pressure's change to reach the effect of decompression or steady voltage.

Description

Self-operated pressure balance valve

Technical Field

The utility model relates to a formula of relying on oneself balanced valve technical field especially relates to a formula of relying on oneself pressure balanced valve.

Background

The self-operated pressure balance valve is a valve with pressure regulation and pressure stabilization functions, is mainly applied to the occasions of pressure reduction or pressure stabilization of a pressure pipeline or a pressure container, and ensures that the pressure of the pressure pipeline or the pressure container at the outlet of the valve is kept in a stable state balanced with the signal pressure by adjusting the signal pressure to the pressure value required by the pressure pipeline or the pressure container at the outlet of the valve, so that the self-operated pressure balance valve needle is used for non-corrosive gas.

Because the existing domestic self-operated pressure balance valve has the defects of complex structure, low control precision, poor pressure stabilizing effect and the like, some domestic high-end equipment needing to be matched with the balance valve mainly adopts the matching of imported balance valve products, and therefore the self-operated pressure balance valve with the specification is optimally designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a self-operated pressure balance valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a formula of relying on oneself pressure balance valve, includes upper diaphragm cover, clamp plate and push pedal, be equipped with the signal pressure opening in the middle of the upper diaphragm cover, the upper diaphragm cover passes through hexagon bolt fixedly connected with valve body, and is provided with the rubber diaphragm between upper diaphragm cover and the valve body, flat head bolt fixed connection is passed through at the inside of valve body and the both ends of deflector, the lower extreme of die-pin is provided with the upper sealing ring, the lateral wall fixedly connected with valve rod of upper sealing ring, the valve rod inner wall is provided with adverse current pressure release hole, the upper end fixedly connected with gasket of valve rod, the upper end fixedly connected with lower sealing ring of gasket, the lower extreme fixedly connected with spring of gasket, the lower extreme fixedly connected with lower valve.

As a further description of the above technical solution:

the air inlet valve is characterized in that an air outlet is formed in one side of the valve body, an air inlet is formed in the other side of the valve body, an upper air chamber is formed in the inner sides of the rubber diaphragm and the upper diaphragm cover, and a lower air chamber is formed in the upper ends of the rubber diaphragm and the guide plate.

As a further description of the above technical solution:

the pressing plate and the rubber diaphragm are fixedly connected with the pushing plate through hexagon nuts, and the upper diaphragm cover, the valve body and the rubber diaphragm are fixedly connected with each other through first hexagon bolts.

As a further description of the above technical solution:

the valve body and the lower sealing ring are fixedly connected with a lining, and the inner wall of the lining is fixedly connected with a filter screen.

As a further description of the above technical solution:

the lower end of the filter screen is fixedly connected with the lower valve cover, the outer side of the lower valve cover and the outer side of the filter screen are provided with first O-shaped rings, and two ends of the lower valve cover are fixedly connected with second hexagon bolts.

As a further description of the above technical solution:

the filter screen is made of a material which is not resistant to corrosive gas, and the filter screen is shaped like a cylindrical hole.

As a further description of the above technical solution:

the lower extreme of valve rod is provided with second O type circle, and the quantity of second O type circle is two. The true book

The novel device has the following beneficial effects:

1. the utility model discloses, utilize the continuous adjustment of signal pressure opening and keep at a certain aperture to reach the effect of decompression or steady voltage, thereby realize that the pressure value of air inlet and gas outlet is balanced, not only the precision is high but also steady voltage is effectual.

2. The utility model discloses, when signal pressure adjusts to the zero-pressure state, because the spring effort of setting below the valve rod, the valve is also in the complete closure state, the residual pressure of gas outlet gets into air chamber down against the current this moment, thereby produce reverse thrust effect and make the diaphragm drive the push pedal and shift up and make and produce the clearance between push pedal and the valve rod and open the pressure release hole that sets up in the middle of the valve rod and make the residual pressure of air chamber and gas outlet evacuation rapidly down on push rod and diaphragm to reach the effect that outlet pressure and signal pressure return to zero simultaneously.

Drawings

Fig. 1 is a schematic cross-sectional view of a self-operated pressure balance valve according to the present invention;

FIG. 2 is an enlarged view of FIG. 1 at B;

fig. 3 is an enlarged view of fig. 1 at a.

Illustration of the drawings:

1. covering with a film; 2. an upper air chamber; 3. a signal pressure port; 4. a hexagonal nut; 5. pressing a plate; 6. a rubber diaphragm; 7. pushing the plate; 8. a flat head bolt; 9. a guide plate; 10. a valve body; 11. an upper seal ring; 12. A bushing; 13. an air outlet; 14. a lower seal ring; 15. a gasket; 16. a valve stem; 17. a filter screen; 18. A first O-ring; 19. a second O-ring; 20. a reverse flow pressure relief vent; 21. a lower valve cover; 22. an air inlet; 23. a spring; 24. a lower air chamber; 25. a first hexagon bolt; 26. and a second hexagon bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a self-operated pressure balance valve, including upper film cover 1, clamp plate 5 and push pedal 7, be equipped with signal pressure port 3 in the middle of the upper film cover 1, upper film cover 1 is through first hexagon bolt 25 fixedly connected with valve body 10, and be provided with rubber diaphragm 6 between upper film cover 1 and the valve body 10, flat head bolt 8 fixed connection is passed through at the inside of valve body 10 and the both ends of deflector 9, push pedal 7's lower extreme fixedly connected with upper seal ring 11, upper seal ring 11's lateral wall fixedly connected with valve rod 16, the 16 inner walls of valve rod are provided with adverse current pressure release hole 20, the upper end fixedly connected with gasket 15 of valve rod 16, gasket 15's upper end fixedly connected with lower sealing ring 14, gasket 15's lower extreme fixedly connected with spring 23, spring 23's lower extreme fixedly.

An air outlet 13 is arranged on one side of a valve body 10, an air inlet 22 is arranged on the other side of the valve body 10, an upper air chamber 2 is arranged on the inner sides of a rubber diaphragm 6 and an upper diaphragm cover 1, a lower air chamber 24 is arranged at the upper ends of the rubber diaphragm 6 and a guide plate 9, the pressing plate 5 and the rubber diaphragm 6 are fixedly connected through a hexagon nut 4 and a push plate 7, the push plate 7 is matched with the hexagon nut 4 to clamp the pressing plate 5 and the rubber diaphragm 6, a lining 12 is fixedly connected between the valve body 10 and a lower sealing ring 14, a filter screen 17 is fixedly connected to the inner wall of the lining 12, the lower end of the filter screen 17 is fixedly connected with a lower valve cover 21, a first O-shaped ring 18 is arranged on the outer side of the lower valve cover 21 and the outer side of the filter screen 17, second hexagon bolts 26 are fixedly connected to both ends of the lower valve cover 21, the filter screen, and the number of the second O-rings 19 is two, and the second O-rings 19 have a sealing function.

The working principle is as follows: inputting given signal pressure to the upper air chamber 2 by an air source interface arranged at the top of the upper membrane cover 1, generating downward thrust by the rubber membrane 6, pushing the valve rod 16 through the push plate 7 to open the valve, enabling pipeline media to enter the lower air chamber 24 and the air outlet 13 after the valve is opened, generating reverse thrust to act on the push plate 7 and the rubber membrane 6 to enable the rubber membrane 6 to drive the push plate 7 to move upwards when the media pass through the lower air chamber 24, enabling the valve to be closed or keeping a certain opening degree along with continuous adjustment of the signal pressure port 3 by the upward thrust generated by a compression spring 23 arranged below the valve rod 16 when the push plate 7 moves upwards, thereby achieving the effect of pressure reduction or pressure stabilization, when the signal pressure port 3 is closed, enabling the valve to be in a completely closed state due to the acting force of the spring 23 arranged below the valve rod 16, enabling residual pressure of the air outlet 13 to reversely flow into the lower air chamber 24 at the moment, generating reverse thrust to act on the push plate 7 and the rubber A clearance is generated between the valve rod 16 so as to open a pressure relief hole arranged in the middle of the valve rod 16, and the residual pressure in the lower air chamber 24 and the air outlet 13 is rapidly exhausted.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a formula of relying on oneself pressure balance valve, includes upper diaphragm cover (1), clamp plate (5) and push pedal (7), its characterized in that: a signal pressure port (3) is arranged in the middle of the upper membrane cover (1), the upper membrane cover (1) is fixedly connected with a valve body (10) through a first hexagon bolt (25), a rubber diaphragm (6) is arranged between the upper diaphragm cover (1) and the valve body (10), the interior of the valve body (10) is fixedly connected with the guide plate (9) through a flat head bolt (8), the lower end of the push plate (7) is provided with an upper sealing ring (11), the outer side wall of the upper sealing ring (11) is fixedly connected with a valve rod (16), a reverse flow pressure relief hole (20) is arranged on the inner wall of the valve rod (16), a gasket (15) is fixedly connected with the outer wall of the valve rod (16), the upper end fixedly connected with of gasket (15) seals ring (14) down, the lower extreme fixedly connected with spring (23) of gasket (15), valve gap (21) down of the lower extreme fixedly connected with of spring (23).

2. A self-operated pressure balanced valve as claimed in claim 1, wherein: the air-conditioning valve is characterized in that an air outlet (13) is formed in one side of the valve body (10), an air inlet (22) is formed in the other side of the valve body (10), an upper air chamber (2) is formed in the inner sides of the rubber diaphragm (6) and the upper diaphragm cover (1), and a lower air chamber (24) is formed between the rubber diaphragm (6) and the guide plate (9).

3. A self-operated pressure balanced valve as claimed in claim 1 or claim 2, in which: the pressing plate (5) and the rubber diaphragm (6) are fixedly connected through a hexagon nut (4) and a pushing plate (7), and the upper diaphragm cover (1), the valve body (10) and the rubber diaphragm (6) are fixedly connected through a first hexagon bolt (25).

4. A self-operated pressure balanced valve as claimed in claim 1, wherein: equal fixedly connected with bush (12) between valve body (10) and lower sealing ring (14), the outer wall fixedly connected with filter screen (17) of bush (12).

5. A self-operated pressure balanced valve as claimed in claim 4, wherein: the lower end of the filter screen (17) is fixedly connected with a lower valve cover (21), a first O-shaped ring (18) is arranged on the outer side of the lower valve cover (21) and the outer side of the filter screen (17), and two ends of the lower valve cover (21) are fixedly connected with second hexagonal bolts (26).

6. A self-operated pressure balanced valve as claimed in claim 4 or claim 5, in which: the filter screen (17) is made of a material which is not resistant to corrosive gas, and the filter screen (17) is in a cylindrical hole shape.

7. A self-operated pressure balanced valve as claimed in claim 1, wherein: the lower end of the valve rod (16) is provided with two second O-shaped rings (19), and the number of the second O-shaped rings (19) is two.