CN203286013U - Pilot-operated opening-and-closing valve - Google Patents
Pilot-operated opening-and-closing valve Download PDFInfo
- Publication number
- CN203286013U CN203286013U CN2013203403471U CN201320340347U CN203286013U CN 203286013 U CN203286013 U CN 203286013U CN 2013203403471 U CN2013203403471 U CN 2013203403471U CN 201320340347 U CN201320340347 U CN 201320340347U CN 203286013 U CN203286013 U CN 203286013U
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- valve
- piston
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- pilot
- chamber
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Abstract
The utility model relates to valves, in particular to a pilot-operated opening-and-closing valve. The pilot-operated opening-and-closing valve solves the technical problem that an existing common pilot-operated valve is complex in structure and high in manufacturing cost. The pilot-operated opening-and-closing valve comprises a valve body and a piston cylinder, wherein the interior of the valve body is divided into a flow inlet chamber and a flow outlet chamber, a valve port is formed between the flow inlet chamber and the flow outlet chamber, an upper end cover and a lower end cover are arranged on the upper port and the lower port of the piston cylinder respectively, a valve plug arranged at the lower end of a valve rod is arranged in cooperation with the valve port, a piston at the upper end of the valve rod is arranged in cooperation with the inner wall of the piston cylinder, a channel hole is formed inside the valve rod, and a liquid inlet is formed in the position, below the piston, of the side wall of the piston cylinder. The pilot-operated opening-and-closing valve makes full use of pressure of fluid to have control over opening and closing, is quite simple in structure, effectively reduces manufacturing cost, and is quite convenient to maintain and disassemble.
Description
Technical field
The utility model relates to valve, is specially a kind of liquid-controlled open-close valve.
Background technique
Usually to adopt some to control the valve that opens and closes by liquid on boiler circulation loop and some engineerings.These valves are by the switching of flowing control valve of liquid, flow of fluid, and valve opening (or closed), when no liquid flows, valve closes (or unlatching).But the many pressure of responding to liquid in pipeline by electronic component of present this fluid-control valve, and then send coherent signal to valve, open (or closed) valve by corresponding element, make the structure of valve comparatively complicated, and the element that adopts is more, cost of production is higher, and repair demolition is quite inconvenient.Therefore in the urgent need to a kind of fluid-control valve simple in structure.
Summary of the invention
The utility model, for solving fluid-control valve complex structure and the high technical problem of cost commonly used at present, provides a kind of liquid-controlled open-close valve.
The utility model is realized by the following technical solutions: a kind of liquid-controlled open-close valve, comprise valve body and piston cylinder, and be divided into the influent stream chamber in valve body and go out to flow chamber two-part, influent stream chamber and go out to flow between chamber to offer valve port; The upper and lower port of piston cylinder is respectively equipped with upper end cap and lower end cap; The setting that matches with valve port of valve rod lower end valve plug, upper end piston and piston cylinder inwall are equipped with, and valve rod inside is provided with port hole, and the position that is positioned at the piston bottom on the sidewall of piston cylinder has liquid entering hole.
Piston is divided into upper piston chamber 14 and lower piston chamber 15 with piston cavity.Liquid entering hole is connected with water pump by pipeline.During work, water pump pumps into the lower piston chamber with liquid by liquid entering hole, when the pressure of piston cavity inner fluid is greater than the hydrodynamic pressure in the upper piston chamber instantly, piston moves up under the fluid pressure effect in lower piston chamber, and the drive valve plug moves up, valve plug is opened, and the fluid in the upper piston chamber flows into out the stream chamber through the port hole on valve rod; Fluid in the influent stream chamber through the influent stream chamber, valve port, go out to flow chamber and outlet is flowed out; When water pump stops downward piston cavity conveying liquid, fluid pressure in the lower piston chamber reduces, go out to flow in the port hole inflow upper piston chamber of fluid through valve rod in chamber, piston moves down under the pressure-acting of the fluid that enters the upper piston chamber, valve plug also moves down simultaneously, until valve port is closed, whole valve closing.
Further, be provided with spring between piston and upper end cap.
If the fluid of turnover valve is gas, because the pressure of gas, relatively less than liquid, therefore is provided with spring between piston and upper end cap, when liquid entering hole had liquid to enter, piston was pushed upwardly, and spring is compressed; When water pump quit work, piston moved down under the acting in conjunction of spring and gas, and valve plug is closed valve port thereupon.Arranging of spring can be in the situation that the gas pressure deficiency be completed resetting of piston.
The utility model adopts simple mechanical structure to realize the switch of valve, and the pressure that takes full advantage of fluid self carrys out the unlatching of control valve, makes structure very simple, and effectively reduces manufacture cost, and repair demolition is also very convenient.
Description of drawings
Structural representation when Fig. 1 liquid-controlled open-close valve described in the utility model is closed.
Structural representation when Fig. 2 liquid-controlled open-close valve described in the utility model is opened.
Fig. 3 liquid-controlled open-close valve described in the utility model is applied in the structural representation in the boiler circulation loop.
The 1-valve body, the 2-piston cylinder, 3-influent stream chamber, 4-goes out to flow chamber, the 5-valve port, 6-upper end cap, 7-lower end cap, 8-valve rod, the 9-valve plug, 10-piston, 11-port hole, 12-liquid entering hole, the 13-spring, 14-upper piston chamber, 15-lower piston chamber, 16-boiler, the 17-rising pipe, 18-water return pipeline, 19-radiating fin, 20-water pump, the 21-safety check, 22-liquid-controlled open-close valve, 23-control valve.
Embodiment
A kind of liquid-controlled open-close valve, comprise valve body 1 and piston cylinder 2, is divided into influent stream chamber 3 in valve body 1 and goes out to flow chamber 4 two-part, influent stream chamber 3 and go out to flow between chamber 4 to offer valve port 5; The upper and lower port of piston cylinder 2 is respectively equipped with upper end cap 6 and lower end cap 7; The setting that matches with valve port 5 of valve rod 8 lower end valve plugs 9, upper end piston 10 is equipped with piston cylinder 2 inwalls, and valve rod 8 inside are provided with port hole 11, and the position that is positioned at piston 10 bottoms on the sidewall of piston cylinder 2 has liquid entering hole 12.
Be provided with spring 13 between piston 10 and upper end cap 6.
Arrow in Fig. 2 represents the flow direction of fluid, and the fluid that is used for hydraulic control in figure enters lower piston chamber 15 through liquid entering hole 12, and valve plug 9 and piston 10 move on all, fluid through valve port 5, go out to flow chamber 4 and flow out valve bodies 1.
Be that the utility model is applied in the schematic diagram in boiler pipe as Fig. 3.The pipe-line system of boiler 16 comprises rising pipe 17 and water return pipeline 18, and rising pipe 17 is connected with water return pipeline 18 by radiating fin 19, forms a circulation loop; Be serially connected with water pump 20 and safety check 21 on rising pipe 17, be serially connected with liquid-controlled open-close valve 22 on water return pipeline 18; Rising pipe 17 also is connected with a control valve 23 and is connected with the liquid entering hole 12 of liquid-controlled open-close valve 22.When water pump 20 started, the pressure of water pump was opened liquid-controlled open-close valve 22 by control valve 23, and systemic circulation is unimpeded; When water pump 20 stopped, rising pipe 17 was controlled and is closed by safety check 21, and liquid-controlled open-close valve 22 is because water pump 20 stops, and control valve 23 loses pressure, and the valve plug 9 of liquid-controlled open-close valve 22 resets and closes under the effect of spring 13 and backwater, and systemic circulation stops.This liquid-controlled open-close valve also can be used on the pilot line of other fluid.
Claims (2)
1. a liquid-controlled open-close valve, comprise valve body (1) and piston cylinder (2), is divided into influent stream chamber (3) in valve body (1) and goes out to flow chamber (4) two-part, influent stream chamber (3) and go out to flow between chamber (4) to offer valve port (5); The upper and lower port of piston cylinder (2) is respectively equipped with upper end cap (6) and lower end cap (7); It is characterized in that, valve rod (8) lower end valve plug (9) setting that matches with valve port (5), upper end piston (10) is equipped with piston cylinder (2) inwall, valve rod (8) inside is provided with port hole (11), and the position that is positioned at piston (10) bottom on the sidewall of piston cylinder (2) has liquid entering hole (12).
2. liquid-controlled open-close valve as claimed in claim 1, is characterized in that, is provided with spring (13) between piston (10) and upper end cap (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203403471U CN203286013U (en) | 2013-06-14 | 2013-06-14 | Pilot-operated opening-and-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203403471U CN203286013U (en) | 2013-06-14 | 2013-06-14 | Pilot-operated opening-and-closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203286013U true CN203286013U (en) | 2013-11-13 |
Family
ID=49542375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203403471U Expired - Fee Related CN203286013U (en) | 2013-06-14 | 2013-06-14 | Pilot-operated opening-and-closing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203286013U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322208A (en) * | 2013-06-14 | 2013-09-25 | 刘工勤 | Hydraulically-controlled opening and closing valve |
-
2013
- 2013-06-14 CN CN2013203403471U patent/CN203286013U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322208A (en) * | 2013-06-14 | 2013-09-25 | 刘工勤 | Hydraulically-controlled opening and closing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20170614 |