CN219827905U - Pressure reducing valve with built-in water pressure self-control pipeline - Google Patents
Pressure reducing valve with built-in water pressure self-control pipeline Download PDFInfo
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- CN219827905U CN219827905U CN202321104423.9U CN202321104423U CN219827905U CN 219827905 U CN219827905 U CN 219827905U CN 202321104423 U CN202321104423 U CN 202321104423U CN 219827905 U CN219827905 U CN 219827905U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 description 9
- 239000012528 membrane Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
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Abstract
The utility model provides a pressure reducing valve with a built-in water pressure self-control pipeline, which belongs to the field of valves and comprises a diaphragm, a diaphragm lining plate, a control cavity and the like, wherein a valve seat, a valve clack and a valve rod are arranged in a valve body, the valve seat is fixed in the valve body, the valve seat is matched with the valve clack, the valve clack is connected with the lower end of the valve rod, the upper end of the valve rod is connected with the diaphragm lining plate, the diaphragm lining plate is connected with the diaphragm, the diaphragm is clamped between the valve body and a valve cover, the control cavity is arranged above the diaphragm, an upstream built-in channel and a downstream built-in channel are formed in the valve body and the valve cover, the upstream built-in channel and the downstream built-in channel are both communicated with the control cavity, a pilot valve is arranged at the communication position of the downstream built-in channel and the control cavity, and the downstream built-in channel is communicated with a pilot valve pressure control cavity of the pilot valve. The utility model uses the pilot valve which is completely installed on the valve cover to control the on-off of the downstream built-in channel and the control cavity, and the pilot valve is controlled by the water outlet pressure.
Description
Technical Field
The utility model belongs to the field of valves, and particularly relates to a pressure reducing valve with a built-in water pressure self-control pipeline.
Background
The hydraulic control valve is a valve which uses the pressure of pipeline medium as power to open and close and regulate. The current hydraulic control valve consists of a main valve, an attached pilot valve and the like. The pilot valve acts along with the change of the liquid level and the pressure of the medium, and can be singly used or used in combination due to various types of the pilot valve, so that the main valve can obtain the functions of singly and compositely adjusting the water level, the water pressure, the flow and the like.
The hydraulic control valve is divided into a diaphragm type and a piston type, the working principle is the same, the pressure difference between the upstream and the downstream is used as power, and the hydraulic control valve is controlled by a pilot valve to make the diaphragm or the piston hydraulically and differentially operate and be completely and automatically regulated by the hydraulic power, so that the valve clack of the main valve is completely opened or completely closed or in a regulating state. The Chinese patent publication No. CN204592509U discloses a diaphragm type hydraulic control valve, which uses the upstream-downstream pressure difference DeltaP as power, and is controlled by a pilot valve to make the diaphragm hydraulic differential operation and completely automatically regulate by hydraulic power, so that the valve disc of the main valve is completely opened or completely closed or in a regulating state. But it has the following drawbacks by mounting the spring in the control chamber above the diaphragm: 1. the spring is in a water soaking state for a long time, and is easy to rust; 2. when the valve cover is installed, the elastic force of the spring needs to be overcome, so that the installation is inconvenient; 3. the pressure difference value of the valve action is not easy to adjust once being set.
Disclosure of Invention
Aiming at the technical problems in the prior art, the utility model provides a pressure reducing valve with a built-in water pressure self-control pipeline, which utilizes a pilot valve completely arranged on a valve cover to control the on-off of a downstream built-in channel and a control cavity, and the pilot valve is controlled by the water outlet pressure.
The technical scheme adopted by the utility model is as follows: the utility model provides a relief pressure valve of built-in water pressure self-control pipeline, includes valve body, disk seat, valve clack, valve rod, valve gap, diaphragm welt and control chamber, be provided with disk seat, valve clack and valve rod in the valve body, the disk seat is fixed in the valve body, disk seat and valve clack cooperation, the valve clack with the valve rod lower extreme is connected, the valve rod upper end is connected with the diaphragm welt, the diaphragm welt is connected with the diaphragm, the diaphragm clamp is in between valve body, the valve gap, the diaphragm top is provided with the control chamber, upstream built-in passageway, downstream built-in passageway have been seted up on valve body and the valve gap, upstream built-in passageway, downstream built-in passageway all communicate with the control chamber, the intercommunication department of downstream built-in passageway and control chamber is provided with the pilot valve pressure control chamber intercommunication of pilot valve.
Further, the pilot valve is located on the valve cover.
Further, one part of the upstream built-in channel is arranged on the valve body, and the other part of the upstream built-in channel is arranged on the valve cover; one part of the downstream built-in channel is arranged on the valve body, and the other part of the downstream built-in channel is arranged on the valve cover.
Furthermore, the upstream built-in channel and the downstream built-in channel are respectively provided with an adjusting needle valve.
Further, the regulating needle valve is positioned on the valve cover.
Further, the pilot valve includes pilot valve disk seat, pilot valve clack, pilot valve guide arm, pilot valve regulation pressure sensing diaphragm, pilot valve sensing diaphragm welt, pilot valve pressure control chamber, pilot valve adjusting screw, pilot valve adjusting nut, pilot valve adjusting pressure spring and pilot valve cover, and the pilot valve disk seat is fixed in on the valve gap, the pilot valve disk seat cooperates with the pilot valve clack, and the pilot valve guide arm runs through the pilot valve disk seat, its lower extreme with the pilot valve clack is connected, and its upper end is connected with the pilot valve sensing diaphragm welt, the pilot valve adjusting pressure sensing diaphragm clamp is in the pilot valve cover with the valve cover is between, the pilot valve adjusting pressure sensing diaphragm welt is connected, the pilot valve pressure control chamber is located the pilot valve adjusting pressure sensing diaphragm below, the pilot valve adjusting screw is connected with the pilot valve cover, is provided with on the pilot valve adjusting nut, and the pilot valve adjusting pressure spring cover is in the pilot valve adjusting screw, and is located between pilot valve adjusting nut and the pilot valve sensing diaphragm welt.
Further, the downstream built-in channel is communicated with the pilot valve pressure control cavity through a through hole formed in the pilot valve seat.
Compared with the prior art, the utility model has the following beneficial effects: the utility model adopts the pilot valve which is completely arranged on the valve cover to control the on-off of the downstream built-in channel and the control cavity, and the control cavity above the diaphragm lining plate is not provided with a spring, so that the valve cover and the valve body are convenient to assemble. The utility model communicates the downstream built-in channel with the pilot valve pressure control cavity of the pilot valve, and controls the opening and closing state of the pilot valve by utilizing the water outlet pressure, thereby controlling whether the main valve is closed or not. The pressure set value of the pilot valve is changed through a pilot valve adjusting screw rod, and the adjustment is convenient.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
fig. 2 is an enlarged view at a of fig. 1 according to an embodiment of the present utility model.
In the figure: the valve comprises a valve body, a valve seat, a valve clack 3, a valve rod 4, a valve cover 5, a valve membrane 6, a membrane liner 7, a control chamber 8, a regulating needle valve 9, a valve seat 10, a valve clack 11, a valve clack 12, a pilot guide rod 13, a pilot regulating pressure sensing membrane 13, a pilot sensing membrane liner 14, a pilot pressure control chamber 15, a pilot regulating screw rod 16, a pilot regulating nut 17, a pilot regulating pressure spring 18, a pilot valve cover 19, an upstream built-in channel 20 and a downstream built-in channel 21.
Detailed Description
The present utility model will be described in detail below with reference to the drawings and the specific embodiments, so that those skilled in the art can better understand the technical solutions of the present utility model.
An embodiment of the present utility model provides a pressure reducing valve with built-in water pressure self-control pipeline, as shown in fig. 1-2, comprising a valve body 1, a valve seat 2, a valve clack 3, a valve rod 4, a valve cover 5, a diaphragm 6, a diaphragm lining 7 and a control cavity 8. Valve seat 2, valve clack 3 and valve rod 4 are provided with in the valve body 1, the valve seat 2 is fixed in the valve body 1, valve seat 2 cooperates with valve clack 3, valve clack 3 with the valve rod 4 lower extreme is connected, valve rod 4 upper end is connected with diaphragm welt 7, diaphragm welt 7 is connected with diaphragm 6, diaphragm 6 presss from both sides between valve body 1, valve gap 5, diaphragm 6 top is provided with control chamber 8.
An upstream built-in channel 20 and a downstream built-in channel 21 are formed in the valve body 1 and the valve cover 5, one part of the upstream built-in channel 20 is arranged on the valve body 1, and the other part of the upstream built-in channel is arranged on the valve cover 5; one part of the downstream internal passage 21 is separately provided on the valve body 1, and the other part is separately provided on the valve cover 5. The control cavity 8 is communicated with the water inlet cavity through an upstream built-in channel 20, the control cavity 8 is communicated with the water outlet cavity through a downstream built-in channel 21, and the valve clack 3 is positioned between the water inlet cavity and the water outlet cavity. A pilot valve is arranged at the communication position of the downstream built-in channel 21 and the control cavity 8, and the downstream built-in channel 21 is communicated with a pilot valve pressure control cavity 15 of the pilot valve. The pilot valve is used to control whether the downstream internal channel 21 communicates with the control chamber 8. The pilot valve is located on the valve cover 5. The upstream internal passage 20 and the downstream internal passage 21 are respectively provided with an adjusting needle valve 9. Both of the adjustment needle valves 9 are located on the valve cover 5.
The pilot valve comprises a pilot valve seat 10, a pilot valve clack 11, a pilot guide rod 12, a pilot valve adjusting pressure sensing diaphragm 13, a pilot valve sensing diaphragm lining plate 14, a pilot valve pressure control cavity 15, a pilot valve adjusting screw rod 16, a pilot valve adjusting pressure nut 17, a pilot valve adjusting pressure spring 18 and a pilot valve cover 19. The pilot valve seat 10 is fixed on the valve cover 5, the pilot valve seat 10 is matched with the pilot valve clack 11, the pilot valve guide rod 12 penetrates through the pilot valve seat 10, the lower end of the pilot valve guide rod is connected with the pilot valve clack 11, and the upper end of the pilot valve guide rod is connected with the pilot valve induction membrane lining plate 14. The pilot-operated pressure sensing diaphragm 13 is clamped between the pilot-operated valve cover 19 and the valve cover 5, the pilot-operated pressure sensing diaphragm 13 is connected with the pilot-operated pressure sensing diaphragm lining plate 14, and the pilot-operated pressure control cavity 15 is located below the pilot-operated pressure sensing diaphragm 13. The pilot valve adjusting screw 16 is connected with the pilot valve cover 19, the lower end of the pilot valve adjusting screw 16 is connected with the pilot valve sensing diaphragm lining plate 14, the pilot valve adjusting screw 16 is provided with a pilot valve adjusting pressure nut 17, and the pilot valve adjusting pressure spring 18 is sleeved on the pilot valve adjusting screw 16 and is positioned between the pilot valve adjusting pressure nut 17 and the pilot valve sensing diaphragm lining plate 14. The downstream built-in channel 21 is communicated with the pilot valve pressure control cavity 15 through a through hole formed in the pilot valve seat 10.
The water outlet cavity is communicated with the pilot valve pressure control cavity 15 through a downstream built-in channel 21, the water outlet pressure acts on the pilot valve adjusting pressure sensing diaphragm 13, and the opening and closing states of the pilot valve are controlled compared with the pressure set value of the pilot valve. The pilot valve pressure set point is controlled by a pilot valve adjustment screw 16, a pilot valve adjustment pressure nut 17 and a pilot valve adjustment pressure spring 18. By rotating the pilot valve adjusting screw 16, the pilot valve adjusting nut 17 in threaded connection with the pilot valve adjusting screw moves up and down along the inner wall of the pilot valve cover 19, and the compression amount of the pilot valve adjusting pressure spring 18 is changed, so that the pressure set value is adjusted.
The pressure reducing valve is in a pressure reducing operation state. When the water outlet pressure is greater than or equal to the pressure set value of the pilot valve, the pilot valve adjusting pressure sensing diaphragm 13 ascends, the pilot valve clack 11 is driven to ascend by the pilot valve sensing diaphragm lining plate 14 and the pilot valve guide rod 12, and after the pilot valve clack 11 is tightly attached to the pilot valve seat 10, the control cavity 8 and the downstream built-in channel 21 are cut off. The water flowing into the control chamber 8 from the upstream built-in passage 20 cannot be discharged from the downstream built-in passage 21, so that the pressure of the control chamber 8 rises, and the diaphragm 6, the diaphragm liner 7, the valve stem 4 and the valve flap 3 are pushed to move downward, closing the main valve (the present pressure reducing valve), as shown in fig. 1.
When the water outlet pressure is smaller than the pressure set value of the pilot valve, water in the water inlet cavity flows into the control cavity 8 through the upstream built-in channel 20 to provide a pressure source for controlling the opening and closing of the main valve. The water in the control chamber 8 is discharged to the outlet chamber through a downstream built-in passage 21. The water pressure in the control chamber 8 resists the upward water pressure to which the valve clack 3 is subjected; in the depressurized operating state, the valve flap 3 is subjected to a greater upward water pressure. The diaphragm 6, diaphragm liner 7, valve stem 4 and valve flap 3 open the main valve upwards. In the steady state of water inlet pressure, the water inlet and water discharge of the control cavity 8 are the same, the opening of the main valve is unchanged, and the outlet pressure is stable.
It should be noted that when the pilot valve is in the open condition, the inlet pressure will also act on the pilot valve pressure control chamber 15, and that too much inlet pressure will also cause the pilot valve to close, cutting off the control chamber 8 and the downstream internal passage 21, taking this into account when setting the pressure setting of the pilot valve.
The present utility model has been described in detail by way of examples, but the description is merely exemplary of the utility model and should not be construed as limiting the scope of the utility model. The scope of the utility model is defined by the claims. In the technical scheme of the utility model, or under the inspired by the technical scheme of the utility model, similar technical schemes are designed to achieve the technical effects, or equivalent changes and improvements to the application scope are still included in the protection scope of the patent coverage of the utility model.
Claims (7)
1. The utility model provides a relief pressure valve of built-in water pressure self-control pipeline, includes valve body, disk seat, valve clack, valve rod, valve gap, diaphragm welt and control chamber, be provided with disk seat, valve clack and valve rod in the valve body, the disk seat is fixed in the valve body, disk seat and valve clack cooperation, the valve clack with the valve rod lower extreme is connected, the valve rod upper end is connected with the diaphragm welt, the diaphragm welt is connected with the diaphragm, the diaphragm clamp is in between valve body, the valve gap, the diaphragm top is provided with the control chamber, its characterized in that, upstream built-in channel, low reaches built-in channel have been seted up on valve body and the valve gap, upstream built-in channel, low reaches built-in channel all communicate with the control chamber, low reaches built-in channel is provided with the pilot valve with the intercommunication department of control chamber, low reaches built-in channel with the pressure control chamber intercommunication of pilot valve.
2. The internal hydraulic self-control line pressure reducing valve according to claim 1, wherein said pilot valve is located on said valve cover.
3. The internal hydraulic self-control line pressure reducing valve according to claim 1, wherein a part of said upstream internal passage is provided separately on said valve body and another part is provided separately on said valve cover; one part of the downstream built-in channel is arranged on the valve body, and the other part of the downstream built-in channel is arranged on the valve cover.
4. The pressure reducing valve of the built-in hydraulic self-control pipeline according to claim 1, wherein the upstream built-in passage and the downstream built-in passage are respectively provided with an adjusting needle valve.
5. The internal hydraulic self-controlling manifold pressure reducing valve as set forth in claim 4, wherein said regulator needle valve is located on said valve cover.
6. The pressure reducing valve for a built-in water pressure self-control pipeline according to claim 1, wherein the pilot valve comprises a pilot valve seat, a pilot valve clack, a pilot valve guide rod, a pilot valve adjusting pressure sensing diaphragm, a pilot valve sensing diaphragm lining plate, a pilot valve pressure control cavity, a pilot valve adjusting screw rod, a pilot valve adjusting pressure nut, a pilot valve adjusting pressure spring and a pilot valve cover, wherein the pilot valve seat is fixed on the valve cover, the pilot valve seat is matched with the pilot valve clack, the pilot valve guide rod penetrates through the pilot valve seat, the lower end of the pilot valve guide rod is connected with the pilot valve clack, the upper end of the pilot valve guide rod is connected with the pilot valve sensing diaphragm lining plate, the pilot valve adjusting pressure sensing diaphragm is clamped between the pilot valve cover and the valve cover, the pilot valve adjusting pressure sensing diaphragm is connected with the pilot valve sensing diaphragm lining plate, the pilot valve adjusting screw rod is connected with the pilot valve cover, the lower end of the pilot valve adjusting screw rod is connected with the pilot valve sensing diaphragm lining plate, and the pilot valve adjusting screw rod is provided with the pilot valve adjusting pressure nut, and the pilot valve adjusting pressure spring is sleeved on the pilot valve adjusting screw rod and is positioned between the pilot valve adjusting pressure nut and the pilot valve lining plate.
7. The internal hydraulic self-control line pressure reducing valve according to claim 6, wherein said downstream internal passage communicates with said pilot valve pressure control chamber through a through hole provided in said pilot valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321104423.9U CN219827905U (en) | 2023-05-10 | 2023-05-10 | Pressure reducing valve with built-in water pressure self-control pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321104423.9U CN219827905U (en) | 2023-05-10 | 2023-05-10 | Pressure reducing valve with built-in water pressure self-control pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219827905U true CN219827905U (en) | 2023-10-13 |
Family
ID=88277825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321104423.9U Active CN219827905U (en) | 2023-05-10 | 2023-05-10 | Pressure reducing valve with built-in water pressure self-control pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219827905U (en) |
-
2023
- 2023-05-10 CN CN202321104423.9U patent/CN219827905U/en active Active
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