CN101769383A - Power-assisted cut-off device - Google Patents
Power-assisted cut-off device Download PDFInfo
- Publication number
- CN101769383A CN101769383A CN 201010144636 CN201010144636A CN101769383A CN 101769383 A CN101769383 A CN 101769383A CN 201010144636 CN201010144636 CN 201010144636 CN 201010144636 A CN201010144636 A CN 201010144636A CN 101769383 A CN101769383 A CN 101769383A
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- main body
- cavity
- hole
- piston
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Abstract
The present invention relates to an improved power-assisted cut-off device. The present invention is mainly characterized in that a cavity is arranged on the main body, a piston is arranged in the cavity, and the piston is arranged on a main shaft screw; two through holes are arranged on the main body, the through holes are respectively arranged on the two sides of the main body, and the through holes are communicated with the cavity; through holes are also arranged at the parts of the water inlet and the water outlet of the main body, and the through holes are correspondingly connected with the two through holes of the main body by a pipe. The through hole at the end of the water outlet is closed during cut-off. The water inlet makes one part of fluid flow into the cavity of the main body through the pipe from the through hole of the water inlet under the action of high pressure liquid, the flowing liquid provides the piston in the cavity with downward pressure, and the piston is driven by the main shaft screw to move downward. Large force exerted by operators for turning a main shaft nut downward is saved. Compared with the prior art, the present invention has outstanding substantial characteristics and remarkable progress.
Description
Technical field
The improvement invention of involved in the present invention is a kind of power-assisted cut-off device, what be specifically related to is a kind of improvement invention that can be easy to a kind of power-assisted cut-off device that throttle down circulates by high-pressure liquid.
Background technique
In the prior art, be used for ending the valve of high-pressure liquid because the hydrodynamic pressure that is subjected to is huge, be difficult to just can to reverse handwheel during operation and end fluid with a people power, must assemble several personnel make a concerted effort mobile handwheel simultaneously could throttle down, secondly because the high pressure of fluid is easy to cause valve seal bad.
Summary of the invention
In view of the technical problem that known technology exists, technical problem solved by the invention be for provide a kind of simple in structure, design is ingenious, a kind of power-assisted cut-off device that can effectively reduce the throttle down dynamics and improve sealability.In order to achieve the above object, the following technological scheme of the present invention realizes: a kind of power-assisted cut-off device, include main body, headscrew, described headscrew is located in the main body, sealed core is fixed in the headscrew bottom, it is characterized in that being that described main body is provided with a cavity, be provided with a piston in described this cavity, described piston is installed on the headscrew, described main body is provided with two through hole, and this through hole branch is located at the main body both sides, and described through hole is communicated with cavity, the water intake of described main body and water outlet place also are provided with through hole, and described this through hole is by the two through hole corresponding connection of pipeline with main body.
Be provided with the combined expanded seal ring of T shape in the described T shape groove, the combined expanded seal ring of described T shape top is provided with hard sealing.
The described alloyed steel that is sealed into firmly.
Described main body is provided with drive motor, and described mainshaft nut is connected with drive motor shaft drive.
When closing the through hole of that end of water outlet, water intake makes a part of fluid flow to by the road in the cavity of main body by the through hole of water intake owing to be subjected to liquid high pressure, apply downward pressure for the piston in the cavity, piston extends this power to headscrew, saved very big power when reversing mainshaft nut downwards for operator, as long as can realize once twisting gently.Described sealed core is provided with interior T shape groove, is provided with the combined expanded seal ring of T shape in the described T shape groove, and the combined expanded seal ring of described T shape top is provided with hard sealing, because the structure of T shape makes the sealability of valve better.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Accompanying drawing has been represented structure of the present invention and embodiment, each relevant details and working principle thereof of embodiment are described below more in conjunction with the accompanying drawings: this kind power-assisted cut-off device, include main body 1, headscrew 2, described headscrew 2 is located in the main body 1, sealed core 3 is fixed in headscrew 2 bottoms, described main body 1 is provided with a cavity 4, be provided with a piston 5 in described this cavity 4, described piston 5 is installed on the headscrew 2, described main body 1 is provided with two through hole 6`, 6, this through hole 6`, be located at main body 1 both sides in 6 minutes, described through hole 6`, 6 are communicated with cavity 4, the water intake 7 and water outlet 8 places of described main body 1 also are provided with through hole 7`, 8`, described this through hole 7`, 8` is by pipeline 9, the two through hole 6` of 9` and main body 1,6 corresponding connections, described pipe 9,9` is the power-assisted high-voltage tube, one end of high-voltage tube respectively is provided with booster valve 10,10`, when throttle down dams, as long as close the booster valve 10` of outlet end, entrance point makes a part of fluid flow in the body cavity 4 through booster valve 10 and power-assisted high-voltage tube 9 by the through hole of entrance point owing to be subjected to liquid high pressure, apply a downward pressure for the piston 5 in the cavity 4, move down when making headscrew 2 drive piston 5, reverse mainshaft nut 11 downwards can for operator and save very big power, because rotating spindle nut 11 will make the headscrew 2 that is threaded with this mainshaft nut 11 along with lines moves downward or upward; If the flow direction of liquid is opposite, then only need close the booster valve of end opposite.Described sealed core 3 is provided with interior T shape groove, be provided with the combined expanded seal ring of T shape in the described T shape groove, the combined expanded seal ring of T shape top is provided with hard sealing, the described alloyed steel that is sealed into firmly, owing to adopt the sealed core that has T shape groove, closed type forms labyrinth sealing, makes the sealability of valve better.Can be provided with drive motor 12 on the described main body 1, described mainshaft nut is connected with drive motor shaft drive, therefore the present invention can also be electronic with screw rod being moved be converted to, promptly improve the class of product and saved human resources again, and can be equipped with programmable controller, by sending instruction to drive motor behind the programmable controller acknowledge(ment) signal, make drive motor work or stop, the present invention compared with prior art has outstanding substantive distinguishing features and obvious improvement.
Claims (5)
1. power-assisted cut-off device, include main body and headscrew, described headscrew is located in the main body, sealed core is fixed in the headscrew bottom, it is characterized in that being that described main body is provided with a cavity, be provided with piston in described this cavity, described piston is installed on the headscrew, described main body is provided with two through hole, this through hole branch is located at the main body both sides, described through hole is communicated with cavity, also is provided with through hole on the main body at the water intake of described main body and water outlet place, and described this through hole is by the two through hole corresponding connection of pipeline with main body.
2. a kind of power-assisted cut-off device as claimed in claim 1 is characterized in that sealed core is provided with interior T shape groove.
3. a kind of power-assisted cut-off device as claimed in claim 2 is characterized in that being provided with the combined expanded seal ring of T shape in the described T shape groove, and the combined expanded seal ring of described T shape top is provided with hard sealing.
4. a kind of power-assisted cut-off device as claimed in claim 3 is characterized in that the described alloyed steel that is sealed into firmly.
5. as claim 1 or 2 or 3 or 4 described a kind of power-assisted cut-off devices, it is characterized in that described main body is provided with drive motor, described headscrew is female to be connected with drive motor shaft drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010144636 CN101769383A (en) | 2010-04-13 | 2010-04-13 | Power-assisted cut-off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010144636 CN101769383A (en) | 2010-04-13 | 2010-04-13 | Power-assisted cut-off device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101769383A true CN101769383A (en) | 2010-07-07 |
Family
ID=42502423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010144636 Pending CN101769383A (en) | 2010-04-13 | 2010-04-13 | Power-assisted cut-off device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101769383A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397592A (en) * | 2018-05-16 | 2018-08-14 | 华北水利水电大学 | Plug type bulkhgead gate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2516410Y (en) * | 2001-12-06 | 2002-10-16 | 李彦波 | Double-cavity booster relay valve and its brake pipe system |
| US20030038004A1 (en) * | 2000-11-24 | 2003-02-27 | Jean-Pierre Michon | Brake booster device, with improved operating conditions, for motor vehicle |
| CN201190807Y (en) * | 2008-03-28 | 2009-02-04 | 相元发 | Tube pressure self-boosting close and open valve |
| CN201621352U (en) * | 2010-04-13 | 2010-11-03 | 瑞安市良精石化机械厂 | Boosting cutoff device |
-
2010
- 2010-04-13 CN CN 201010144636 patent/CN101769383A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030038004A1 (en) * | 2000-11-24 | 2003-02-27 | Jean-Pierre Michon | Brake booster device, with improved operating conditions, for motor vehicle |
| CN2516410Y (en) * | 2001-12-06 | 2002-10-16 | 李彦波 | Double-cavity booster relay valve and its brake pipe system |
| CN201190807Y (en) * | 2008-03-28 | 2009-02-04 | 相元发 | Tube pressure self-boosting close and open valve |
| CN201621352U (en) * | 2010-04-13 | 2010-11-03 | 瑞安市良精石化机械厂 | Boosting cutoff device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397592A (en) * | 2018-05-16 | 2018-08-14 | 华北水利水电大学 | Plug type bulkhgead gate |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100707 |