CN215950554U - Valve for reducing closing pressure - Google Patents
Valve for reducing closing pressure Download PDFInfo
- Publication number
- CN215950554U CN215950554U CN202023301636.XU CN202023301636U CN215950554U CN 215950554 U CN215950554 U CN 215950554U CN 202023301636 U CN202023301636 U CN 202023301636U CN 215950554 U CN215950554 U CN 215950554U
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- CN
- China
- Prior art keywords
- valve
- valve body
- closing pressure
- piston
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 229920001973 fluoroelastomer Polymers 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 19
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a valve for reducing closing pressure, which comprises a valve body, wherein a water inlet end is arranged at the left end of the valve body, a water outlet end is arranged at the right end of the valve body, an inner cavity is arranged at the middle position inside the valve body, a valve core is arranged in the inner cavity, a valve rod is arranged at the top position of the valve core, a hand wheel is arranged at the top end of the valve rod, a cavity containing pipe is arranged on the outer wall of the top of the left side of the valve body, and a piston is arranged in the cavity containing pipe. According to the valve for reducing the closing pressure, the cavity tube and the piston can be used for dispersing the closing pressure generated by the fluid medium when the valve is closed by utilizing the up-and-down sliding of the piston when the valve is closed, so that the damage of the closing pressure to the wall of the valve and a pipeline is reduced, and the service life of the valve and the pipeline is prolonged.
Description
Technical Field
The utility model relates to the field of valves, in particular to a valve for reducing closing pressure.
Background
The device is used for controlling the direction, pressure and flow of fluid in a fluid system. The valve is a device that can control the flow rate of a medium (liquid, gas, powder) in a pipe or equipment while allowing or stopping the flow of the medium. In the use process of the valve, the fluid medium in the pipeline can generate instantaneous closing pressure, namely a positive water hammer, at the moment of closing the valve, and due to the fact that the pressure value of the closing pressure is large, when the valve or the pipeline is acted on for a long time, risks of valve core breakage and pipeline wall breakage exist, and safety of the valve and the pipeline is threatened. To this end, we propose a valve that reduces the closing pressure.
SUMMERY OF THE UTILITY MODEL
The main object of the present invention is to provide a valve with reduced closing pressure, which can effectively solve the problems of the background art.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the valve for reducing closing pressure comprises a valve body, wherein a water inlet end is arranged at the left end of the valve body, a water outlet end is arranged at the right end of the valve body, an inner cavity is formed in the middle position inside the valve body, a valve core is arranged in the inner cavity, a valve rod is arranged at the top position of the valve core, a hand wheel is arranged at the top end of the valve rod, a cavity containing pipe is arranged on the outer wall of the top of the left side of the valve body, and a piston is arranged in the cavity containing pipe.
Preferably, the outer edge positions of the water inlet end and the water outlet end are both provided with pipeline flanges, and the pipeline flanges and the valve body are designed and manufactured in an integrated mode.
By adopting the technical scheme, the following technical effects can be achieved: the valve can be mounted on a pipeline by virtue of a pipeline flange, and is convenient to dismount.
Preferably, the valve core and the inner cavity are both cylindrical, the outer circle diameter of the valve core is slightly smaller than the inner circle diameter of the inner cavity, a clearance fit is formed between the side walls of the valve core and the inner cavity, the bottom end of the valve rod is in interference fit with the top of the valve core, and the valve rod penetrates upwards through the valve cover at the top of the valve body and is fixedly connected with a hand wheel.
By adopting the technical scheme, the following technical effects can be achieved: the hand wheel is rotated, the valve core can be driven by the valve rod to move up and down in the inner cavity, and the valve is opened and closed.
Preferably, a waterproof sealing ring is fixedly sleeved at a joint between the outer wall of the valve rod and the bottom of the valve cover at the top of the valve body, and the waterproof sealing ring is made of a rubber material.
By adopting the technical scheme, the following technical effects can be achieved: the waterproof sealing ring can prevent fluid media in the inner cavity from seeping out from a gap between the valve rod and the valve cover at the top of the valve body, and the effect of improving the tightness of the valve is achieved.
Preferably, form screw-thread fit between the outer wall that holds the chamber pipe bottom and valve body top and be close to the water inlet end, hold the chamber pipe and be made by metal copper material, piston interference fit is on holding the inner wall of chamber pipe, the piston is by engineering plastics preparation, the ring channel has been seted up on the outer wall of piston, the clamp has O type sealing washer in the ring channel, O type sealing washer is by the fluorine rubber preparation, the quantity of O type sealing washer and ring channel is three groups.
By adopting the technical scheme, the following technical effects can be achieved: when the valve is opened, the fluid medium can flow into the cavity pipe, and when the valve core closes the flow hole at the bottom of the inner cavity, the fluid medium in the pipeline can generate instantaneous closing pressure, so that the piston is ejected upwards for a certain distance, and the closing pressure is dispersed instead of acting on the valve core and the inner wall of the pipeline, thereby being beneficial to protecting the safety of the valve and the pipeline.
And the middle position of the outer surface of the top of the cavity tube is provided with an air hole.
By adopting the technical scheme, the following technical effects can be achieved: the pressure in the cavity tube and the external atmospheric pressure are balanced by the air holes, and the piston can freely slide up and down in the cavity tube.
Compared with the prior art, the utility model has the following beneficial effects: this reduce valve of closing pressure through being provided with into water end, play water end and pipeline flange, when installing the external pipeline with the valve body on, can play the effect of the dismouting of being convenient for with the help of pipeline flange, is favorable to the maintenance and the change in later stage. Through being provided with and holding chamber pipe and piston, when the case stopped up the circulation pore of inner chamber bottom, can change this valve into closed state by the open mode, at this moment, because the fluidic medium in external pipeline and the valve body suffers the case suddenly and blocks the flow, can produce instantaneous closing pressure, the piston that is located holds the chamber pipe receives the influence of this effort, thereby upwards ejecting a distance, consequently dispersion partly closing pressure, help reducing the influence of closing pressure to pipeline inner wall and case, protect the safety of this valve and pipeline, prevent that closing pressure is too big to lead to the valve to collapse, perhaps the pipeline wall breaks. Through being provided with ring channel and O type sealing washer, the clamp has O type sealing washer in the ring channel that is located the piston lateral wall, can play sealed effect, prevents that fluid medium from spouting in the space between escape canal pipe and the piston, simultaneously, has good heat-resisting and resistant chemical corrosion performance concurrently. The air holes are arranged, so that the pressure difference between the cavity tube and the external space can be balanced by the air holes positioned at the top of the cavity tube, and the piston can freely slide up and down in the cavity tube.
Drawings
FIG. 1 is a schematic diagram of the overall construction of a valve for reducing closing pressure according to the present invention;
FIG. 2 is a front cross-sectional view of a valve for reducing closing pressure in accordance with the present invention;
FIG. 3 is an enlarged view at A of FIG. 2 of a valve for reducing closing pressure in accordance with the present invention;
fig. 4 is an enlarged view at B in fig. 2 of a valve of the present invention for reducing closing pressure.
In the figure: 1. a valve body; 2. a water inlet end; 3. a water outlet end; 4. an inner cavity; 5. a valve core; 6. a valve stem; 7. A hand wheel; 8. a cavity tube; 9. a piston; 10. a pipe flange; 11. a waterproof sealing ring; 12. an annular groove; 13. an O-shaped sealing ring; 14. and (4) air holes.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.
As shown in fig. 1 to 4, a valve for reducing closing pressure includes a valve body 1, a water inlet end 2 is disposed at a left end of the valve body 1, a water outlet end 3 is disposed at a right end of the valve body 1, an inner cavity 4 is disposed at an intermediate position inside the valve body 1, a valve core 5 is disposed in the inner cavity 4, a valve rod 6 is disposed at a top position of the valve core 5, a hand wheel 7 is disposed at a top end position of the valve rod 6, a cavity containing pipe 8 is disposed on an outer wall of a top portion of a left side of the valve body 1, and a piston 9 is disposed in the cavity containing pipe 8.
The outer edge positions of the water inlet end 2 and the water outlet end 3 are both provided with pipeline flanges 10, and the pipeline flanges 10 and the valve body 1 are designed and manufactured in an integrated mode.
The valve core 5 and the inner cavity 4 are both cylindrical, the outer circle diameter of the valve core 5 is slightly smaller than that of the inner circle of the inner cavity 4, clearance fit is formed between the side walls of the valve core 5 and the inner cavity 4, the bottom end of the valve rod 6 is in interference fit with the top of the valve core 5, and the valve rod 6 upwards penetrates through a valve cover at the top of the valve body 1 and is fixedly connected with the hand wheel 7.
The joint between the outer wall of the valve rod 6 and the bottom of the valve cover at the top of the valve body 1 is fixedly sleeved with a waterproof sealing ring 11, and the waterproof sealing ring 11 is made of rubber materials.
The bottom of the cavity containing pipe 8 is in threaded fit with the outer wall, close to the water inlet end 2, of the top of the valve body 1, the cavity containing pipe 8 is made of a metal copper material, the piston 9 is in interference fit with the inner wall of the cavity containing pipe 8, the piston 9 is made of engineering plastics, an annular groove 12 is formed in the outer wall of the piston 9, an O-shaped sealing ring 13 is clamped in the annular groove 12, the O-shaped sealing ring 13 is made of fluororubber, and the number of the O-shaped sealing rings 13 and the number of the annular grooves 12 are three.
The middle position of the top outer surface of the cavity containing pipe 8 is provided with a vent hole 14.
When the valve is used, a user firstly butt joints the pipeline flange 10 to a flange plate of an external pipeline, then puts in bolts and nuts, and connects the water inlet end 2 and the water outlet end 3 to the external pipeline by flanges, so that the water inlet end 2 is ensured to face the flowing direction of a fluid medium, and the installation work of the valve can be finished; when the valve is in an opening state, a fluid medium can continuously pass through a flow hole at the bottom of the inner cavity 4, and meanwhile, the fluid medium can also flow into the cavity containing pipe 8, because the fluid medium has a certain pressure in an external pipeline, the piston 9 can move upwards for a short distance along the cavity containing pipe 8, and when the hand wheel 7 is rotated clockwise, the valve core 5 can be driven by the valve rod 6 to gradually move downwards to block the flow hole at the bottom of the inner cavity 4, so that the valve is switched from the opening state to the closing state, at the moment, the fluid medium in the external pipeline can generate instantaneous closing pressure because the fluid medium is blocked by the valve core 5, and then the instantaneous closing pressure acts on the piston 9, the piston 9 can be ejected upwards for a certain distance by the fluid medium in the cavity containing pipe 8, so that the closing pressure caused by closing of the valve is dispersed, and the aim of reducing the closing pressure is fulfilled; when the valve is opened again, the fluid medium in the valve starts to flow again, and because the fluid medium in the cavity tube 8 is still in a static state at this time, a pressure difference is formed in the valve, the fluid medium in the cavity tube 8 is drawn into the valve body 1, and the piston 9 moves downwards for a certain distance to play a role in balancing the pressure difference, so that the burden of the fluid medium on the pipeline wall and the valve is reduced.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. A valve for reducing closing pressure, comprising a valve body (1), characterized in that: the water inlet valve is characterized in that a water inlet end (2) is arranged at the left end of the valve body (1), a water outlet end (3) is arranged at the right end of the valve body (1), an inner cavity (4) is arranged at the middle position inside the valve body (1), a valve core (5) is arranged in the inner cavity (4), a valve rod (6) is arranged at the top of the valve core (5), a hand wheel (7) is arranged at the top end of the valve rod (6), a cavity containing pipe (8) is arranged on the outer wall of the top of the left side of the valve body (1), and a piston (9) is arranged in the cavity containing pipe (8).
2. A reduced closing pressure valve as defined in claim 1, wherein: the outer edge positions of the water inlet end (2) and the water outlet end (3) are provided with pipeline flanges (10), and the pipeline flanges (10) and the valve body (1) are designed and manufactured in an integrated mode.
3. A reduced closing pressure valve as defined in claim 1, wherein: valve core (5) and inner chamber (4) all are cylindricly, the outside circle footpath of valve core (5) is slightly less than the inner circle footpath of inner chamber (4), form clearance fit between the lateral wall of valve core (5) and inner chamber (4), the bottom interference fit of valve rod (6) and the top position of valve core (5), valve rod (6) upwards pass the valve gap at valve body (1) top to with hand wheel (7) mutual fixed connection.
4. A reduced closing pressure valve as defined in claim 1, wherein: the valve is characterized in that a waterproof sealing ring (11) is fixedly sleeved at the joint between the outer wall of the valve rod (6) and the bottom of the valve cover at the top of the valve body (1), and the waterproof sealing ring (11) is made of a rubber material.
5. A reduced closing pressure valve as defined in claim 1, wherein: the bottom of appearance chamber pipe (8) and valve body (1) top form screw-thread fit between being close to the outer wall of intake end (2), appearance chamber pipe (8) are by the preparation of metal copper material, piston (9) interference fit is on the inner wall of appearance chamber pipe (8), piston (9) are by engineering plastics preparation, ring channel (12) have been seted up on the outer wall of piston (9), the clamp has O type sealing washer (13) in ring channel (12), O type sealing washer (13) are by the fluororubber preparation, the quantity of O type sealing washer (13) and ring channel (12) is three groups.
6. A reduced closing pressure valve as defined in claim 1, wherein: the middle position of the outer surface of the top of the cavity tube (8) is provided with an air hole (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023301636.XU CN215950554U (en) | 2020-12-31 | 2020-12-31 | Valve for reducing closing pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023301636.XU CN215950554U (en) | 2020-12-31 | 2020-12-31 | Valve for reducing closing pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215950554U true CN215950554U (en) | 2022-03-04 |
Family
ID=80566328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023301636.XU Expired - Fee Related CN215950554U (en) | 2020-12-31 | 2020-12-31 | Valve for reducing closing pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215950554U (en) |
-
2020
- 2020-12-31 CN CN202023301636.XU patent/CN215950554U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220304 |