CN202901309U - Double-valve-core cut-off control valve - Google Patents
Double-valve-core cut-off control valve Download PDFInfo
- Publication number
- CN202901309U CN202901309U CN 201220622490 CN201220622490U CN202901309U CN 202901309 U CN202901309 U CN 202901309U CN 201220622490 CN201220622490 CN 201220622490 CN 201220622490 U CN201220622490 U CN 201220622490U CN 202901309 U CN202901309 U CN 202901309U
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- valve
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Abstract
The utility model discloses a double-valve-core cut-off control valve which comprises a valve body, a valve cover, a valve core assembly and a valve rod. An inlet flow channel is arranged on the right side of the valve body. An outlet flow channel is arranged on the left side of the valve body. The inlet flow channel is communicated with the outlet flow channel through a large flow through hole in the bottom of a middle cavity of the valve body. The double-valve-core cut-off control valve is characterized in that the valve core assembly comprises a large valve core and a small valve core. The small valve core is movably arranged on an upper cavity of the large valve core and is connected with the valve rod. The small valve core pulls the large valve core to move upwards. A small flow through hole which is communicated with the inlet flow channel and the outlet flow channel is formed in the bottom of the upper cavity of the large valve core. When the valve is closed, the large valve core moves downwards to block the large flow through hole, the small valve core moves downwards to block the small flow through hole, large diameter sealing is formed between the large valve core and the large flow through hole, and small diameter sealing is formed between the small valve core and the small flow through hole. According to the double-valve-core cut-off control valve, opening and closing with small pushing force can be achieved, service life is prolonged, and meanwhile mounting and conveying are convenient.
Description
Technical field
The utility model relates to a kind of valve, is specifically related to a kind of double spool cutting-off controlling valve.
Background technique
Because there is pressure reduction in the import export of valve, this must produce unbalanced force to the spool top and bottom of cut-off type control valve, in order to overcome this unbalanced force to the impact of the opening and closing generation of valve, most of producers can select the high thrust final controlling element to solve this problem.But select the price of high thrust final controlling element can be very high because the excessive specific pressure allowable that may surpass valve sealing face of thrust damages sealing surface, and its weight also corresponding increase is a lot, give to install and transportation is made troubles.
Summary of the invention
In view of the problem that present known technology exists, the technical problems to be solved in the utility model is to be to provide a kind of low thrust opening and closing that realize, improves working life, simultaneously the double spool cutting-off controlling valve of installation and convenient transportation.
The utility model is implemented by the following technical programs:
Double spool cutting-off controlling valve, comprise valve body, valve gap, mangetic core assembly and valve rod, inlet channel is established on the valve body right side, the valve body left side sets out a mouthful runner, inlet channel communicates with outlet flow through the large flowing hole of valve body lumen bottom, it is characterized in that: mangetic core assembly comprises big valve core and small valve core, the epicoele that big valve core is located in the small valve core activity is connected with valve rod, moving upward of big valve core spurred by small valve core, the little flowing hole that connects inlet channel and outlet flow is established in the epicoele bottom of big valve core, at the valve closing state, big valve core is blocked large flowing hole downwards, small valve core is blocked little flowing hole downwards, forms the heavy caliber sealing between big valve core and the large flowing hole, forms small-bore sealing between small valve core and the little flowing hole.
In technique scheme, we adopt a kind of double spool cut-off type control valve, it is the opening and closing of making up to realize low thrust by two spools, medium advances cavity arrival big valve core and small valve core upper surface from the valve side inlet during valve closing, because so the spool top and bottom exist the pressure reduction upper and lower surface to produce a unbalanced force, run into the larger cut-off valve of heavy caliber pressure reduction, adopt a suffered very large valve of unbalanced force of valve core structure spool to be difficult to open, adopt two spools just to avoid this problem, at first small valve core is because the little corresponding suffered unbalanced force of lifting surface area is also little, valve final controlling element in opening process can be mentioned small valve core easily, when the small valve core medium that moves up just can arrive valve export by little flowing hole and release pressure, make valve inner pressure reach a state of equilibrium, small valve core continues to move up when reaching the stroke of small valve core, small valve core just can drive easily big valve core and move up, until valve is opened fully.The structure that this small valve core releases rear drive big valve core to pressure first solves cleverly the large pressure reduction cutting-off controlling of heavy caliber valve and opens hard problem.Because valve is realized the low thrust opening and closing, so avoided that thrust is excessive to be damaged sealing surface, improve valve working life, owing to alleviated the weight of high thrust final controlling element, make and install and convenient transportation simultaneously.
As preferably, mangetic core assembly also comprises the spool gland, the spool gland is fixed in the upper top of chamber of big valve core, small valve core is comprised of the head of hypomere and the guide portion of epimere, and head outer diameter is greater than the guide portion external diameter, and guide portion mills into the polygonal cylinder, guide portion slides and is located at the polygonal square hole of spool gland, guide portion is connected with valve rod, makes progress when small valve core is spurred by valve rod, and the head of small valve core promotes the spool gland moves upward big valve core.The guide portion of small valve core mills into the hexagonal cylinder.The small valve core guide portion mills into the hexagonal cylinder and has solved medium drive the problem that big valve core rotates in the large situation of flow velocity.
As preferably, form the sealing surface weld deposit Si Tailai alloy of heavy caliber sealing between big valve core and the large flowing hole.Sealing surface weld deposit Si Tailai alloy, its extreme hardness wear resistance is good, effectively solves the valve cavitation phenomenon to the destruction of sealing surface, improves valve working life.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 is structural representation of the present utility model.
Embodiment
Describe details and the working principle of the utility model specific embodiment in detail below in conjunction with accompanying drawing:
As shown in the figure, double spool cutting-off controlling valve of the present utility model comprises valve body 7, valve gap 2, mangetic core assembly and valve rod 1, and inlet channel 11 is established on the valve body right side, the valve body left side sets out mouthful runner 12, and inlet channel 11 communicates with outlet flow 12 through the large flowing hole 10 of valve body lumen 13 bottoms; Mangetic core assembly comprises big valve core 6, small valve core 3 and spool gland 4, spool gland 4 is fixed in epicoele 14 tops of big valve core, the epicoele 14 of big valve core is located in small valve core 3 activities, small valve core is comprised of the head 3b of hypomere and the guide portion 3a of epimere, head 3b external diameter is greater than guide portion 3a external diameter, guide portion 3a mills into the hexagonal cylinder, guide portion 3a slides and is located at the hexagonal square hole of spool gland 4, guide portion 3a is connected with valve rod 1, when small valve core 3 is made progress by valve rod 1 pulling, when small valve core 3 moves the stroke that reaches small valve core, the head 3b of small valve core promotes spool gland 4 moves upward big valve core 6, the little flowing hole 9 that connects inlet channel 11 and outlet flow 12 is established in epicoele 14 bottoms of big valve core, side flowing hole 5 is established in epicoele 14 sides of big valve core, at the valve closing state, big valve core 6 is blocked large flowing hole 10 downwards, small valve core 3 is blocked little flowing hole 9 downwards, form heavy caliber sealing 8 between big valve core 6 and the large flowing hole 10, form small-bore sealing 15 between small valve core 3 and the little flowing hole 9, form the sealing surface weld deposit Si Tailai alloy of heavy caliber sealing 8 between big valve core and the large flowing hole.
Above-mentioned double spool cutting-off controlling valve, it is the opening and closing of making up to realize low thrust by two spools: medium arrives big valve core 6 and small valve core 3 upper surfaces from valve inlet runner 11 inlet valve body lumens 13 during valve closing, small valve core 3 is because the little corresponding suffered unbalanced force of lifting surface area is also little, valve final controlling element in opening process can be mentioned small valve core easily, when small valve core 3 medium that moves up just can arrive valve export runner 12 by little flowing hole 9 pressure is released, make valve inner pressure reach a state of equilibrium, small valve core 3 continues to move up when reaching the stroke of small valve core, small valve core 3 can drive easily big valve core 6 and move up, until valve is opened fully.
Claims (4)
1. double spool cutting-off controlling valve, comprise valve body, valve gap, mangetic core assembly and valve rod, inlet channel is established on the valve body right side, the valve body left side sets out a mouthful runner, inlet channel communicates with outlet flow through the large flowing hole of valve body lumen bottom, it is characterized in that: mangetic core assembly comprises big valve core and small valve core, the epicoele that big valve core is located in the small valve core activity is connected with valve rod, moving upward of big valve core spurred by small valve core, the little flowing hole that connects inlet channel and outlet flow is established in the epicoele bottom of big valve core, at the valve closing state, big valve core is blocked large flowing hole downwards, small valve core is blocked little flowing hole downwards, forms the heavy caliber sealing between big valve core and the large flowing hole, forms small-bore sealing between small valve core and the little flowing hole.
2. double spool cutting-off controlling valve as claimed in claim 1, it is characterized in that: mangetic core assembly also comprises the spool gland, the spool gland is fixed in the upper top of chamber of big valve core, small valve core is comprised of the head of hypomere and the guide portion of epimere, head outer diameter is greater than the guide portion external diameter, guide portion mills into the polygonal cylinder, guide portion slides and is located at the polygonal square hole of spool gland, guide portion is connected with valve rod, make progress when small valve core is spurred by valve rod, the head of small valve core promotes the spool gland moves upward big valve core.
3. double spool cutting-off controlling valve as claimed in claim 2, it is characterized in that: the guide portion of small valve core mills into the hexagonal cylinder.
4. double spool cutting-off controlling valve as claimed in claim 1 is characterized in that: the sealing surface weld deposit Si Tailai alloy that forms the heavy caliber sealing between big valve core and the large flowing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622490 CN202901309U (en) | 2012-11-22 | 2012-11-22 | Double-valve-core cut-off control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622490 CN202901309U (en) | 2012-11-22 | 2012-11-22 | Double-valve-core cut-off control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202901309U true CN202901309U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220622490 Expired - Fee Related CN202901309U (en) | 2012-11-22 | 2012-11-22 | Double-valve-core cut-off control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202901309U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179985A (en) * | 2014-07-22 | 2014-12-03 | 江苏亿阀集团有限公司 | High-pressure large-diameter stop valve with high-in low-out type flow direction |
| CN105937630A (en) * | 2016-07-04 | 2016-09-14 | 南京华宁阀门有限公司 | Heat radiation type double-valve-clack adjusting stop type air vent valve |
| CN107975602A (en) * | 2016-10-21 | 2018-05-01 | 杭州三花研究院有限公司 | A kind of volume control device |
| CN109058470A (en) * | 2018-09-29 | 2018-12-21 | 贵州电网有限责任公司 | A kind of compressed-air energy storage expanding machine air inlet adjustment valve and its adjusting method |
-
2012
- 2012-11-22 CN CN 201220622490 patent/CN202901309U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179985A (en) * | 2014-07-22 | 2014-12-03 | 江苏亿阀集团有限公司 | High-pressure large-diameter stop valve with high-in low-out type flow direction |
| CN105937630A (en) * | 2016-07-04 | 2016-09-14 | 南京华宁阀门有限公司 | Heat radiation type double-valve-clack adjusting stop type air vent valve |
| CN105937630B (en) * | 2016-07-04 | 2020-04-24 | 南京华宁阀门有限公司 | Heat dissipation type double-valve-clack adjusting stop type air exhaust valve |
| CN107975602A (en) * | 2016-10-21 | 2018-05-01 | 杭州三花研究院有限公司 | A kind of volume control device |
| CN107975602B (en) * | 2016-10-21 | 2021-10-15 | 杭州三花研究院有限公司 | Flow control device |
| CN109058470A (en) * | 2018-09-29 | 2018-12-21 | 贵州电网有限责任公司 | A kind of compressed-air energy storage expanding machine air inlet adjustment valve and its adjusting method |
| CN109058470B (en) * | 2018-09-29 | 2023-09-29 | 贵州电网有限责任公司 | Air inlet regulating valve of compressed air energy storage expander and regulating method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20131122 |