CN102720867A - Self-operated flow control valve capable of automatically adjusting pressure difference - Google Patents
Self-operated flow control valve capable of automatically adjusting pressure difference Download PDFInfo
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- CN102720867A CN102720867A CN2012102134158A CN201210213415A CN102720867A CN 102720867 A CN102720867 A CN 102720867A CN 2012102134158 A CN2012102134158 A CN 2012102134158A CN 201210213415 A CN201210213415 A CN 201210213415A CN 102720867 A CN102720867 A CN 102720867A
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Abstract
The invention discloses a self-operated flow control valve capable of automatically adjusting a pressure difference. The self-operated flow control valve comprises a valve body, a valve cover, a valve rod, a piston valve plate and a sleeve valve seat, wherein a bushing block and the valve cover are arranged in the valve body to form a control pressure cavity; a membrane is fixed in the middle of the control pressure cavity to divide the control pressure cavity into an upper pressure cavity and a lower pressure cavity; the middle of the membrane is fixedly connected to the valve rod; an air inlet is formed in the valve cover and is communicated with one end of an external control pipeline; the other end of the control pipeline is communicated with a medium inflow opening of the valve body; and the air inlet is also communicated with the upper pressure cavity. On the basis of changing the pressure difference by using a spring of the original self-operated control valve, pressure can be automatically adjusted by increasing the pressure variation of gas, the pressure difference of a system cannot be changed, and the effects of automatically adjusting and eliminating hydraulic disorder in a pipe network of different branched pipelines and different users can be achieved; and both pressure variation inside a controlled system and pressure variation outside the controlled system can be adjusted by the valve.
Description
Technical field
The present invention relates to mechanical engineering and use valve, particularly a kind of self-operated flow control valve of automatic adjusting pressure reduction.
Background technique
The differential pressure control valve door of existing market all is manually to regulate basically, because manual tune can not reach the effect of real time operation; General is just can implement in pipe network hydraulic misadjustment variation back a period of time, and the adjusting of self-powering type pressure-difference valve at present partly adopts the size that changes spring pressure to change the principle that it controls pressure reduction, this mode; The control accuracy inaccuracy; Regulation range is little, and poor stability can't be demarcated pressure difference.
Summary of the invention
In order to overcome above-mentioned defective, the invention provides a kind of variation in pressure of medium self of utilizing and carry out self-control, thereby reach the self-operated flow control valve that keeps the constant automatic adjusting pressure reduction of controlled system pressure reduction.
The present invention for the technological scheme that solves its technical problem and adopt is: a kind of self-operated flow control valve of automatic adjusting pressure reduction; Comprise valve body, valve gap, valve rod, piston type valve plate and telescopic valve seat, valve gap is connected through bolt seals with valve body, in valve gap, is provided with a valve rod; The lower end of valve rod is fixedly connected the piston type valve plate; Cooperate in the middle of valve seat is located in the valve body and with the piston type valve plate, be provided with a lining in the said valve body and valve gap is formed a control pressure chamber, control pressure chamber center fixed one diaphragm is divided into upward pressure chamber and downforce chamber with control pressure chamber; The diaphragm center fixed is connected on the valve rod; Said valve gap is provided with a suction port and is communicated with external control pipeline one end, and the MEDIA FLOW inlet of pilot line the other end connection valve body, and suction port is communicated with the upward pressure chamber simultaneously.
As further improvement of the present invention, said valve stem tip also is provided with an adjusting screw rod.
As further improvement of the present invention, said valve rod is positioned at and is fixed with a follow block and diaphragm clamp device on the control pressure chamber, and said diaphragm is fixed in the diaphragm clamp device, and valve rod sheathed spring between diaphragm clamp device and follow block.
Basic functional principle of the present invention is following:
When the pressure of valve body inflow entrance during greater than the valve body outflow opening, then the gas of valve body inflow entrance gets into the upward pressure chamber of control pressure chamber through pilot line, moves down thereby make diaphragm drive valve rod; Increase circulation area, otherwise, when the pressure of valve body inflow entrance during less than the valve body outflow opening; Then the gas in the upward pressure chamber of control pressure chamber gets into the inflow entrance of valve body through pilot line; Move thereby diaphragm is driven on the valve rod, reduce circulation area, realize regulating automatically.
The invention has the beneficial effects as follows: the present invention changes on the basis of pressure reduction at original self force type control valve with spring; Increase is carried out pressure with the variation in pressure of gas self and is regulated automatically; The pressure reduction of assurance system is constant; The effect that play the branch branch road, divides the user to regulate, eliminate hydraulic misadjustment in the pipe network automatically, and controlled system is outer and system's internal pressure changes, and this valve all can be regulated.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the side view of Fig. 1.
Embodiment
In order to deepen to understanding of the present invention, will combine embodiment and accompanying drawing that the present invention is made further detailed description below, this embodiment only is used to explain the present invention, does not constitute the qualification to protection domain of the present invention.
Fig. 1-2 has shown a kind of mode of execution of the self-operated flow control valve of a kind of automatic adjusting pressure reduction of the present invention; Comprise valve body 1, valve gap 2, valve rod 3, piston type valve plate 4 and telescopic valve seat 5; Valve gap 2 and valve body 1 are connected through bolt seals, in valve gap 2, are provided with a valve rod 3, and the lower end of valve rod 3 is fixedly connected piston type valve plate 4; Cooperate in the middle of valve seat 5 is located in the valve body 1 and with piston type valve plate 4; Be provided with a lining 6 in the said valve body 1 and form a control pressure chamber 7 with valve gap 2, control pressure chamber 7 center fixed one diaphragm 8 is divided into upward pressure chamber 71 and downforce chamber 72 with control pressure chamber 7, and diaphragm 8 center fixed are connected on the valve rod 3; Said valve gap 2 is provided with a suction port 9 and is communicated with external control pipeline 10 1 ends; And pilot line 10 the other ends are communicated with the MEDIA FLOW inlet of valve body 1, and suction port 9 is communicated with upward pressure chamber 71 simultaneously, and said valve rod 3 tops also are provided with an adjusting screw rod 11; Said valve rod 3 is positioned at and is fixed with a follow block 12 and diaphragm clamp device 13 on the control pressure chamber 7, and said diaphragm 8 is fixed in the diaphragm clamp device, and valve rod 3 sheathed spring 14 between diaphragm clamp device 13 and follow block 12.
Claims (3)
1. self-operated flow control valve of automatically regulating pressure reduction; Comprise valve body (1), valve gap (2), valve rod (3), piston type valve plate (4) and telescopic valve seat (5); Valve gap (2) is connected through bolt seals with valve body (1); In valve gap (2), be provided with a valve rod (3), the lower end of valve rod (3) is fixedly connected piston type valve plate (4), cooperates in the middle of valve seat (5) is located in the valve body (1) and with piston type valve plate (4); It is characterized in that: be provided with a lining (6) in the said valve body (1) and form a control pressure chamber (7) with valve gap (2); Control pressure chamber (7) center fixed one diaphragm (8) is divided into upward pressure chamber (71) and downforce chamber (72) with control pressure chamber (7), and diaphragm (8) center fixed is connected on the valve rod (3), and said valve gap (2) is provided with a suction port (9) and is communicated with external control pipeline (10) one ends; And pilot line (10) the other end is communicated with the MEDIA FLOW inlet of valve body (1), and suction port (9) is communicated with upward pressure chamber (71) simultaneously.
2. the self-operated flow control valve of automatic adjusting pressure reduction according to claim 1 is characterized in that: said valve rod (3) top also is provided with an adjusting screw rod (11).
3. the self-operated flow control valve of automatic adjusting pressure reduction according to claim 1; It is characterized in that: said valve rod (3) is positioned at and is fixed with a follow block (12) and diaphragm clamp device (13) on the control pressure chamber (7); Said diaphragm (8) is fixed in the diaphragm clamp device, and valve rod (3) is positioned at a sheathed spring (14) between diaphragm clamp device (13) and the follow block (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102134158A CN102720867A (en) | 2012-06-27 | 2012-06-27 | Self-operated flow control valve capable of automatically adjusting pressure difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102134158A CN102720867A (en) | 2012-06-27 | 2012-06-27 | Self-operated flow control valve capable of automatically adjusting pressure difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102720867A true CN102720867A (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102134158A Pending CN102720867A (en) | 2012-06-27 | 2012-06-27 | Self-operated flow control valve capable of automatically adjusting pressure difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102720867A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225910A (en) * | 2013-03-26 | 2013-07-31 | 西安建筑科技大学 | Differential pressure controlled self-operated protection valve bank for vacuum tube collector array |
| CN103674540A (en) * | 2013-12-30 | 2014-03-26 | 正丰阀门集团有限公司 | Life testing device of diaphragm of hydraulic control valve |
| CN104389020A (en) * | 2014-11-26 | 2015-03-04 | 山东萨菲尔晶体科技有限公司 | Process and device for rapidly growing sapphire crystal material of corundum system by virtue of flame fusion method |
| CN105179770A (en) * | 2015-10-16 | 2015-12-23 | 宁夏富隆德流体科技有限公司 | Self-operated pressure-gradient control valve |
| CN110617334A (en) * | 2019-09-26 | 2019-12-27 | 浙江绿洲制冷设备有限公司 | Flow regulating valve |
| CN114588566A (en) * | 2022-01-20 | 2022-06-07 | 抚顺华腾防护装备制造有限公司 | Positive pressure oxygen respirator pressure differential regulation and control type automatic oxygen supply device |
-
2012
- 2012-06-27 CN CN2012102134158A patent/CN102720867A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225910A (en) * | 2013-03-26 | 2013-07-31 | 西安建筑科技大学 | Differential pressure controlled self-operated protection valve bank for vacuum tube collector array |
| CN103674540A (en) * | 2013-12-30 | 2014-03-26 | 正丰阀门集团有限公司 | Life testing device of diaphragm of hydraulic control valve |
| CN103674540B (en) * | 2013-12-30 | 2016-06-08 | 正丰阀门集团有限公司 | Hydraulic control valve diaphragm endurance testing device |
| CN104389020A (en) * | 2014-11-26 | 2015-03-04 | 山东萨菲尔晶体科技有限公司 | Process and device for rapidly growing sapphire crystal material of corundum system by virtue of flame fusion method |
| CN105179770A (en) * | 2015-10-16 | 2015-12-23 | 宁夏富隆德流体科技有限公司 | Self-operated pressure-gradient control valve |
| CN110617334A (en) * | 2019-09-26 | 2019-12-27 | 浙江绿洲制冷设备有限公司 | Flow regulating valve |
| CN114588566A (en) * | 2022-01-20 | 2022-06-07 | 抚顺华腾防护装备制造有限公司 | Positive pressure oxygen respirator pressure differential regulation and control type automatic oxygen supply device |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |