CN220227946U - Gas valve with pressure relief auxiliary function - Google Patents

Abstract

The utility model relates to the field of valves, in particular to a gas valve with a pressure relief auxiliary function. Including valve body and the fixed pressure release pipe of locating valve body upper end, the valve body upper end has been seted up with pressure release pipe matched with through-hole, and the inside top slip of pressure release pipe is equipped with first piston board, and the inside below slip of pressure release pipe is equipped with the second piston board, and the fixed sealed hemisphere with through-hole matched with that is equipped with of second piston board lower extreme, pressure release pipe surface lower extreme has seted up a plurality of pressure release holes, and first piston board upper end one side is equipped with the restraint pole, and restraint pole upper end activity runs through out the top surface of pressure release pipe. The beneficial effects of the utility model are as follows: the height of the first piston plate is adjusted through rotating the threaded rod, and then the compression deformation amount of the connecting spring is adjusted, namely the effect of adjusting the elasticity of the connecting spring is achieved, the effect of changing the pressure peak value is achieved, when the pressure is greater than the set peak value, the sealing hemisphere is jacked up by the pressure, the pressure release hole is gradually opened at the moment, and the pressure release effect is achieved.

Description

Gas valve with pressure relief auxiliary function

Technical Field

The utility model relates to the field of valves, in particular to a gas valve with a pressure relief auxiliary function.

Background

The valve is a control part in a conveying system, has the functions of stopping, adjusting, guiding and the like, is commonly provided with a liquid valve and a gas valve, and is generally required to be provided with a pressure relief device in the use process, most of the pressure relief devices are used for propping up a sealing ball on a pressure relief hole through a spring, so that the effect of plugging the pressure relief hole is realized, when the pressure rises, the sealing ball is jacked up to enable the spring to be compressed, the effect of pressure relief is realized, but the pressure applied by the spring to the sealing ball is difficult to change, namely the peak value of the pressure in the valve is difficult to change, and the pressure of different peak values is inconvenient to release.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: most pressure relief devices are used for propping the sealing ball against the pressure relief hole through the spring, so that the effect of plugging the pressure relief hole is achieved, when the pressure rises, the sealing ball is jacked up to enable the spring to be compressed, the pressure relief effect is achieved, but the pressure applied to the sealing ball by the spring is difficult to change, namely the peak value of the pressure in the valve is difficult to change, and the pressure of different peak values is inconvenient to relieve.

In order to solve the problems, the utility model adopts the following technical scheme: the utility model provides a gas valve with pressure release auxiliary function, includes the valve body and fixes the pressure release pipe of locating the valve body upper end, the through-hole with pressure release pipe matched with is seted up to the valve body upper end, the inside top slip of pressure release pipe is equipped with first piston board, the air vent has been seted up at first piston board middle part, the inside below slip of pressure release pipe is equipped with the second piston board, second piston board upper end is connected with first piston board lower extreme through connecting spring, second piston board lower extreme is fixed to be equipped with through-hole matched with sealed hemisphere, a plurality of relief holes have been seted up to pressure release pipe surface lower extreme, pressure release pipe upper end cover is equipped with the outer tube, top surface middle part rotation is equipped with the threaded rod in the outer tube, threaded rod lower extreme screw thread runs through pressure release pipe top surface and rotates with first piston board upper end middle part to be connected, first piston board upper end one side is equipped with the restraint pole, restraint pole upper end activity runs through out the top surface of pressure release pipe.

The beneficial effects of the utility model are as follows: the height of the first piston plate is adjusted through rotating the threaded rod, and then the compression deformation amount of the connecting spring is adjusted, namely the effect of adjusting the elasticity of the connecting spring is achieved, the effect of changing the pressure peak value is achieved, when the pressure is greater than the set peak value, the sealing hemisphere is jacked up by the pressure, the pressure release hole is gradually opened at the moment, and the pressure release effect is achieved.

As a further improvement of the present utility model, the technical problem to be solved is: for gases with pH value, the contact with the spring is easy to cause the corrosion of the spring.

In order to solve the technical problems, the utility model further adopts the following technical scheme: the pressure relief holes are distributed in an annular array, and the upper end of the pressure relief holes is lower than the upper end face of the second piston plate.

The beneficial effects of the improvement are as follows: through the cooperation of second piston plate and pressure release hole, avoid the pressure release hole to open the in-process, gas diffusion gets into the pressure release intraductal, causes connecting spring contact gas to produce the corruption.

As a further improvement of the present utility model, the technical problem to be solved is: it is difficult for the staff to intuitively understand the adjusted pressure peak.

In order to solve the technical problems, the utility model further adopts the following technical scheme: the lower end face of the constraint rod is rotationally connected with the upper end face of the first piston plate, a through hole matched with the constraint rod is formed in the top face of the pressure relief pipe, a spiral groove is formed in the middle of the outer surface of the constraint rod, a sliding block matched with the spiral groove is fixedly arranged on the inner wall of the through hole, the upper end of the constraint rod penetrates through the outer sleeve and is provided with a pointer, and scale marks matched with the pointer are arranged on the upper end face of the outer sleeve.

The beneficial effects of the improvement are as follows: through mutually supporting of coiling groove and slider, can drive the restraint pole and rotate when first piston board motion, the restraint pole drives the pointer deflection, and the staff of being convenient for is through the intuitive peak value of knowing pressure of the scale value that the observation pointer indicates.

The utility model adopts the technical scheme that: the convoluted groove encircles the restraining bar one revolution.

The beneficial effects of the improvement are as follows: the rotation amplitude of the constraint rod is not more than 360 degrees, and the accuracy of scales reflected by the coordination of the pointer and the scale marks is ensured.

Drawings

FIG. 1 is an external view of a gas valve;

FIG. 2 is a schematic side cross-sectional view of a gas valve structure;

fig. 3 is a schematic view of a partial structure of a gas valve.

The character labels in the figure are shown as 1, a valve body; 2. a pressure relief tube; 3. an outer sleeve; 4. a pressure relief hole; 5. a first piston plate; 6. a connecting spring; 7. a second piston plate; 8. sealing the hemisphere; 9. a threaded rod; 10. a slide block; 11. a spiral groove; 12. a restraining bar; 13. a pointer.

Detailed Description

In order that those skilled in the art may better understand the technical solutions of the present utility model, the following detailed description of the present utility model with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present utility model.

Example 1:

as shown in fig. 1-3, a gas valve with pressure relief auxiliary function, including valve body 1 and the pressure relief pipe 2 of fixedly locating valve body 1 upper end, the through-hole with pressure relief pipe 2 matched with is seted up to valve body 1 upper end, pressure relief pipe 2 inside top slip is equipped with first piston board 5, the air vent has been seted up at first piston board 5 middle part, pressure relief pipe 2 inside below slip is equipped with second piston board 7, second piston board 7 upper end is connected with first piston board 5 lower extreme through connecting spring 6, second piston board 7 lower extreme is fixed to be equipped with through-hole matched with sealed hemisphere 8, pressure relief pipe 2 surface lower extreme has seted up a plurality of pressure relief holes 4, pressure relief pipe 2 upper end cover is equipped with outer tube 3, the rotation of outer tube 3 interior top surface middle part is equipped with threaded rod 9, threaded rod 9 lower extreme screw thread runs through pressure relief pipe 2 top surface and rotates with first piston board 5 upper end middle part and is connected, first piston board 5 upper end one side is equipped with restraint pole 12, restraint pole 12 upper end activity runs through the top surface of pressure relief pipe 2. The height of the first piston plate 5 is adjusted through rotating the threaded rod 9, and then the compression deformation amount of the connecting spring 6 is adjusted, namely the effect of adjusting the elasticity of the connecting spring 6 is achieved, the effect of changing the pressure peak value is achieved, when the pressure is greater than the set peak value, the sealing hemisphere 8 is jacked up by the pressure, the pressure release hole 4 is gradually opened at the moment, and the pressure release effect is achieved.

The plurality of pressure relief holes 4 are distributed in an annular array, and the upper end of the pressure relief holes is lower than the upper end face of the second piston plate 7. Through the cooperation of the second piston plate 7 and the pressure relief hole 4, the gas diffusion is prevented from entering the pressure relief pipe 2 in the opening process of the pressure relief hole 4, and the connecting spring 6 is prevented from being corroded by contact gas.

The lower end face of the constraint rod 12 is rotationally connected with the upper end face of the first piston plate 5, a through hole matched with the constraint rod 12 is formed in the top face of the pressure relief pipe 2, a spiral groove 11 is formed in the middle of the outer surface of the constraint rod 12, a sliding block 10 matched with the spiral groove 11 is fixedly arranged on the inner wall of the through hole, a pointer 13 is arranged at the upper end of the constraint rod 12 penetrating through the outer sleeve 3, and scale marks matched with the pointer 13 are arranged on the upper end face of the outer sleeve 3. Through the cooperation of the spiral groove 11 and the sliding block 10, when the first piston plate 5 moves, the constraint rod 12 is driven to rotate, the constraint rod 12 drives the pointer 13 to deflect, and a worker can intuitively know the pressure peak value by observing the scale value pointed by the pointer.

The convolute groove 11 surrounds the restraining bar 12 for one revolution. The rotation amplitude of the constraint rod 12 is not larger than 360 degrees, namely the accuracy of scales represented by the coordination of the pointer 13 and the scale marks is ensured.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. The foregoing is merely illustrative of the preferred embodiments of the utility model, and it is noted that there is virtually no limit to the specific structure which may be imposed by those skilled in the art without departing from the spirit of the utility model, and that modifications, adaptations, or variations of the foregoing features may be combined in a suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present utility model.

Claims (4)

1. A gas valve with pressure release auxiliary function, its characterized in that: including valve body (1) and fixed pressure release pipe (2) of locating valve body (1) upper end, valve body (1) upper end is seted up with pressure release pipe (2) matched with through-hole, pressure release pipe (2) inside top slip is equipped with first piston plate (5), the air vent has been seted up at first piston plate (5) middle part, pressure release pipe (2) inside below slip is equipped with second piston plate (7), second piston plate (7) upper end is connected with first piston plate (5) lower extreme through connecting spring (6), second piston plate (7) lower extreme is fixed to be equipped with through-hole matched with sealed hemisphere (8), pressure release pipe (2) surface lower extreme has been seted up a plurality of pressure release holes (4), pressure release pipe (2) upper end cover is equipped with outer tube (3), top surface middle part rotation is equipped with threaded rod (9) in outer tube (3), threaded rod (9) lower extreme screw thread runs through pressure release pipe (2) and rotates with first piston plate (5) upper end middle part to be connected, first piston plate (5) upper end is equipped with restriction pole (12) top surface one side, pressure release pipe (12) is equipped with top surface (12).

2. A gas valve with pressure relief assist function according to claim 1, characterized in that: the pressure relief holes (4) are distributed in an annular array, and the upper ends of the pressure relief holes are lower than the upper end face of the second piston plate (7).

3. A gas valve with pressure relief assist function according to claim 1, characterized in that: the utility model discloses a piston rod, including piston plate (5) and pressure release pipe, constraint pole (12) lower terminal surface is connected with the rotation of first piston plate (5) up end, pressure release pipe (2) top surface offer with constraint pole (12) matched with opening, spiral groove (11) have been seted up at constraint pole (12) surface middle part, opening inner wall is fixed to be equipped with spiral groove (11) matched with slider (10), constraint pole (12) upper end runs through outside outer sleeve pipe (3) and is equipped with pointer (13), outer sleeve pipe (3) up end is equipped with and pointer (13) matched with scale mark.

4. A gas valve with pressure relief assist function according to claim 3, characterized in that: the spiral groove (11) surrounds the restraint rod (12) for a circle.