CN221121065U - Ultra-low pressure safety discharge valve - Google Patents
Ultra-low pressure safety discharge valve Download PDFInfo
- Publication number
- CN221121065U CN221121065U CN202323222462.1U CN202323222462U CN221121065U CN 221121065 U CN221121065 U CN 221121065U CN 202323222462 U CN202323222462 U CN 202323222462U CN 221121065 U CN221121065 U CN 221121065U
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- valve body
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- 230000001105 regulatory effect Effects 0.000 claims description 19
- 230000006978 adaptation Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model relates to the technical field of valves, in particular to an ultra-low pressure safety discharge valve, wherein a pressure device comprises an upper cover plate and a lower cover plate, the upper cover plate is matched with a diaphragm to form a normal pressure cavity, the diaphragm is matched with the lower cover plate to form a pressure cavity, the position of a valve body corresponding to an inlet channel is communicated with a connecting pipe, one end of the connecting pipe, which is far away from the valve body, is communicated with the pressure cavity, the diameter of the diaphragm is larger than that of a valve core.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to an ultra-low pressure safety discharge valve.
Background
The valve is a mechanical device for controlling the flow rate, flow direction, pressure, temperature and the like of flowing fluid media, the valve is a basic component in a pipeline system, and the discharge valve is used as a valve capable of protecting a pipeline in the valve, and generally consists of a valve body, a valve core, a valve seat and a valve rod, and the valve core is matched with the valve seat to control the circulation of a medium channel in the valve body.
For the control pressure and the release gas of the medium-small caliber and low pressure pipeline, the release valve is needed to control, the release valve mainly drives the valve rod under the pressure effect set by the diaphragm in the inner cavity, the valve core connected with the valve rod is tightly attached to the valve seat, when the pressure in the pipeline is increased, the sealing surface of the valve core is compressed by the compression spring, the diaphragm expands, the valve core leaves the valve seat, and the release valve starts to release pressure, but the existing release valve only depends on the sealing surface of the valve core to be compressed, so that the opening and closing of the valve core cannot be controlled rapidly, and the effects of sensitive control pressure and release gas are difficult to achieve.
Disclosure of utility model
The utility model aims to overcome the defects and the shortcomings of the prior art and provide an ultra-low pressure safety discharge valve, which has the advantage of controlling the opening and closing of the valve more sensitively.
The technical scheme adopted by the utility model is as follows: the utility model provides an ultralow pressure safety discharge valve, includes valve body and pressure device, be equipped with diaphragm and adjusting spring in the pressure device, be equipped with the case in the valve body and with the disk seat of case looks adaptation, the valve body inner chamber separates into inlet channel and outlet channel through the cooperation of case and disk seat, the case is connected with the valve rod, the valve rod runs through valve body and diaphragm transmission cooperation far away from the one end of case, adjusting spring one end offsets the inner wall that the valve rod one end was kept away from to the other end and pressure device with the diaphragm and offsets, pressure device includes upper cover plate and lower apron, the upper cover plate forms the normal pressure chamber with the diaphragm cooperation, the diaphragm forms the pressure chamber with the cooperation of lower apron, the valve body corresponds the position intercommunication of inlet channel has the connecting pipe, the one end intercommunication pressure chamber is kept away from to the connecting pipe, the connecting pipe is used for the intercommunication with inlet channel and pressure chamber, the diameter of diaphragm is greater than the diameter of case.
Preferably, a connecting plate is arranged above the diaphragm, a bump is arranged below the connecting plate in a protruding mode, a through hole for the bump to be clamped is formed in the diaphragm, a screw is connected with the bump in a threaded mode, and the connecting plate is fixedly connected with the valve rod through the screw.
Preferably, the outer edge of the diaphragm extends to be clamped and fixed between the upper cover plate and the lower cover plate.
Preferably, the pressure device further comprises an adjusting bolt, the upper end of the upper cover plate is provided with a pressure regulating pipe in a protruding mode, the inner wall of the pressure regulating pipe is provided with threads matched with the adjusting bolt, the adjusting bolt is in threaded fit with the pressure regulating pipe, and one end of the adjusting spring, which extends into the pressure regulating pipe, abuts against the adjusting bolt, and the other end of the adjusting spring abuts against the connecting plate.
Preferably, the valve rod is sleeved with the valve cover, the valve cover is fixedly connected with the valve body through a screw, the valve core is sleeved with the adaptive sleeve, one end of the sleeve abuts against the valve cover, the other end of the sleeve abuts against the valve seat, and a plurality of pressure relief holes are uniformly distributed in the side wall of the sleeve.
Preferably, the pressure relief hole is provided with an arc part, an inclined part and a straight part from bottom to top.
Preferably, the upper end of the sleeve is provided with a first step, the first step stretches into the joint between the valve cover and the valve body, the lower end of the sleeve is provided with a second step, and the second step is clamped with the outer wall of the valve seat.
The beneficial effects of the utility model are as follows: the utility model has the structure of rapidly controlling the opening and closing of the valve, namely, the inlet channel is communicated with the pressure cavity through the connecting pipe, so that the gas entering the inlet channel is also led into the pressure cavity, the pressure of the inlet channel is the same as that of the pressure cavity, when the pressure in the pressure cavity is increased, the diaphragm rapidly expands to drive the valve core to leave the valve seat for gas discharge, the compression area of the diaphragm is larger than that of the valve core, the pressure change can be sensed more sensitively, and the utility model has the advantage of controlling the opening and closing of the valve more sensitively.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged schematic view of a portion of a pressure regulating tube according to the present utility model;
FIG. 3 is an enlarged schematic view of FIG. 1 at A;
FIG. 4 is a schematic view of a sleeve according to the present utility model;
In the figure, the valve body is 1-, the pressure device is 2-, the diaphragm is 3-, the regulating spring is 4-, the valve core is 5-, the valve seat is 6-, the inlet channel is 7-, the outlet channel is 8-, the valve rod is 9-, the upper cover plate is 10-, the lower cover plate is 11-, the normal pressure cavity is 12-, the pressure cavity is 13-, the connecting pipe is 14-, the connecting plate is 15-, the lug is 16-, the through hole is 17-, the regulating bolt is 18-, the pressure regulating pipe is 19-, the valve cover is 20-, the sleeve is 21-, the pressure relief hole is 22-the arc part is 23-, the inclined part is 24-, the straight part is 25-, the first step is 26-and the second step is 27-.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.
It should be noted that, in the embodiments of the present utility model, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.
The terms of direction and position in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the utility model and are not intended to limit the scope of the utility model.
As shown in fig. 1 to 4, an ultra-low pressure safety discharge valve according to an embodiment of the present utility model comprises a valve body 1 and a pressure device 2, wherein a diaphragm 3 and an adjusting spring 4 are arranged in the pressure device 2, a valve core 5 and a valve seat 6 matched with the valve core 5 are arranged in the valve body 1, an inner cavity of the valve body 1 is separated into an inlet channel 7 and an outlet channel 8 through the matching of the valve core 5 and the valve seat 6, the valve core 5 is connected with a valve rod 9, one end of the valve rod 9 far away from the valve core 5 penetrates through the valve body 1 to be in transmission matching with the diaphragm 3, one end of the adjusting spring 4 abuts against the diaphragm 3, the other end abuts against an inner wall of the pressure device 2 far away from the valve rod 9, the pressure device 2 comprises an upper cover plate 10 and a lower cover plate 11, the upper cover plate 10 cooperates with the diaphragm 3 to form an atmospheric pressure cavity 12, the diaphragm 3 cooperates with the lower cover plate 11 to form a pressure cavity 13, a position of the valve body 1 corresponds to the inlet channel 7 is communicated with a connecting pipe 14, one end of the connecting pipe 14 far away from the valve body 1 is communicated with the pressure cavity 13, the connecting pipe 14 is used for communicating the inlet channel 7 with the pressure cavity 13, and the diameter of the connecting pipe 13 is larger than the diameter of the valve core 3. The utility model has the structure of quickly controlling the opening and closing of the valve, namely, the inlet channel is communicated with the pressure cavity through the connecting pipe, so that the gas entering the inlet channel is also led into the pressure cavity, the pressure of the inlet channel is the same as that of the pressure cavity, when the pressure in the pressure cavity is increased, the diaphragm is quickly expanded to drive the valve core to leave the valve seat for gas discharge, the diaphragm is reset through the regulating spring and a certain pressure is provided for the diaphragm, the pressure for starting the expansion of the diaphragm is set, the pressure bearing area of the diaphragm is larger than that of the valve core, the pressure change can be sensed more sensitively, and the utility model has the advantage of controlling the opening and closing of the valve more sensitively.
The diaphragm 3 top is equipped with connecting plate 15, the bellied lug 16 that has of connecting plate 15 below, the diaphragm 3 still is equipped with the through-hole 17 that supplies lug 16 joint, lug 16 threaded connection has the screw, connecting plate 15 passes through screw and valve rod 9 fixed connection. Through the structure, namely the connecting plate above the diaphragm, the diaphragm drives the connecting plate to axially move upwards when expanding, the connecting plate is of a rigid structure, and the connecting plate drives the valve rod, so that the movement conversion rate of diaphragm expansion is improved, and the opening and closing sensitivity of the valve core is further improved.
The outer edge of the diaphragm 3 extends to be clamped and fixed between the upper cover plate 10 and the lower cover plate 11. Through above-mentioned structure, the diaphragm both ends are fixed through upper cover plate and lower apron joint promptly, further improve diaphragm expansion's stability and deformation volume.
The pressure device 2 further comprises an adjusting bolt 18, the upper end of the upper cover plate 10 is provided with a pressure regulating pipe 19 in a protruding mode, threads matched with the adjusting bolt 18 are arranged on the inner wall of the pressure regulating pipe 19, the adjusting bolt 18 is in threaded fit with the pressure regulating pipe 19, one end of the adjusting spring 4 stretches into the pressure regulating pipe 19 to abut against the adjusting bolt 18, and the other end of the adjusting spring abuts against the connecting plate 15. Through above-mentioned structure, offset with adjusting spring through adjusting bolt promptly, adjusting bolt alright control adjusting spring's compression volume changes adjusting spring's pretightning force, can change the pressure that the diaphragm begins to expand, further improves valve control pressure and the sensitivity of release gas.
The valve rod 9 is sleeved with a valve cover 20, the valve cover 20 is fixedly connected with the valve body 1 through a screw, the valve core 5 is sleeved with a sleeve 21 which is matched with the valve cover 20, one end of the sleeve 21 abuts against the valve cover 20, the other end of the sleeve abuts against the valve seat 6, and a plurality of pressure relief holes 22 are uniformly distributed in the side wall of the sleeve 21. Through above-mentioned structure, the case overcoat has the sleeve promptly, and the sleeve offsets spacing through valve gap and disk seat both ends, and the pressure release hole has been seted up to the sleeve lateral wall, carries out certain amount of relief gas through the pressure release hole, prevents that the case from leaving the disk seat immediately, and the gas under huge pressure differential directly strikes the valve inner member, has the advantage of protection valve member.
The pressure relief hole 22 is provided with an arc part 23, an inclined part 24 and a straight part 25 from bottom to top. Through above-mentioned structure, the structure of pressure release hole is from bottom to top open-ended distance increase in proper order promptly, and the internal diameter of circular arc portion is less than the internal diameter of tilting portion, and the internal diameter of tilting portion is less than the internal diameter of straight face portion, and the case sealing surface begins to release gas when moving to the pressure release hole, and case sealing surface can increase in proper order through circular arc portion, tilting portion and straight face portion through the gas volume, further reduces the impact force that causes of pressure differential.
The upper end of the sleeve 21 is provided with a first step 26, the first step 26 stretches into the joint between the valve cover 20 and the valve body 1, the lower end of the sleeve 21 is provided with a second step 27, and the second step 27 is clamped with the outer wall of the valve seat 6. Through above-mentioned structure, sleeve upper end is spacing through the junction joint of first step with valve gap and valve body promptly, and the lower extreme passes through second step and disk seat joint, further improves telescopic stability, prevents that the sleeve from receiving impact and lateral shifting, has avoided the risk of revealing.
The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.
Claims (7)
1. The utility model provides an ultra-low pressure safety discharge valve, includes valve body (1) and pressure device (2), be equipped with diaphragm (3) and regulating spring (4) in pressure device (2), be equipped with case (5) in valve body (1) and with disk seat (6) of case (5) looks adaptation, inlet channel (7) and outlet channel (8) are separated into through the cooperation of case (5) with disk seat (6) in valve body (1) inner chamber, case (5) are connected with valve rod (9), the one end that valve rod (9) kept away from case (5) runs through valve body (1) and diaphragm (3) transmission cooperation, regulating spring (4) one end offsets the inner wall that the valve rod (9) one end was kept away from with pressure device (2) other end and offsets its characterized in that: the pressure device (2) comprises an upper cover plate (10) and a lower cover plate (11), the upper cover plate (10) is matched with the diaphragm (3) to form a normal pressure cavity (12), the diaphragm (3) is matched with the lower cover plate (11) to form a pressure cavity (13), a connecting pipe (14) is communicated with the position of the valve body (1) corresponding to the inlet channel (7), one end of the connecting pipe (14) far away from the valve body (1) is communicated with the pressure cavity (13), the connecting pipe (14) is used for communicating the inlet channel (7) with the pressure cavity (13), and the diameter of the diaphragm (3) is larger than that of the valve core (5).
2. An ultra low pressure safety vent according to claim 1, wherein: the diaphragm (3) top is equipped with connecting plate (15), the arch of connecting plate (15) below has lug (16), diaphragm (3) still is equipped with through-hole (17) that supply lug (16) joint, lug (16) threaded connection has the screw, connecting plate (15) pass through screw and valve rod (9) fixed connection.
3. An ultra low pressure safety vent according to claim 1, wherein: the outer edge of the diaphragm (3) extends to be clamped and fixed between the upper cover plate (10) and the lower cover plate (11).
4. An ultra low pressure safety vent according to claim 2, wherein: the pressure device (2) further comprises an adjusting bolt (18), the upper end of the upper cover plate (10) is provided with a pressure regulating pipe (19) in a protruding mode, threads matched with the adjusting bolt (18) are arranged on the inner wall of the pressure regulating pipe (19), the adjusting bolt (18) is in threaded fit with the pressure regulating pipe (19), one end of the adjusting spring (4) stretches into the pressure regulating pipe (19) to abut against the adjusting bolt (18), and the other end of the adjusting spring abuts against the connecting plate (15).
5. An ultra low pressure safety vent according to claim 1, wherein: valve rod (9) overcoat has valve gap (20), valve gap (20) pass through screw and valve body (1) fixed connection, case (5) overcoat has sleeve (21) of looks adaptation, sleeve (21) one end offsets with valve gap (20) and the other end offsets with disk seat (6), sleeve (21) lateral wall evenly distributed has a plurality of pressure release hole (22).
6. An ultra low pressure safety vent according to claim 5, wherein: the pressure relief hole (22) is provided with an arc part (23), an inclined part (24) and a straight surface part (25) from bottom to top.
7. An ultra low pressure safety vent according to claim 5, wherein: the upper end of the sleeve (21) is provided with a first step (26), the first step (26) stretches into the joint between the valve cover (20) and the valve body (1), the lower end of the sleeve (21) is provided with a second step (27), and the second step (27) is clamped with the outer wall of the valve seat (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323222462.1U CN221121065U (en) | 2023-11-28 | 2023-11-28 | Ultra-low pressure safety discharge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323222462.1U CN221121065U (en) | 2023-11-28 | 2023-11-28 | Ultra-low pressure safety discharge valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221121065U true CN221121065U (en) | 2024-06-11 |
Family
ID=91365274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323222462.1U Active CN221121065U (en) | 2023-11-28 | 2023-11-28 | Ultra-low pressure safety discharge valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221121065U (en) |
-
2023
- 2023-11-28 CN CN202323222462.1U patent/CN221121065U/en active Active
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