CN101566179A - Hydraulic flow-limiting overpressure self-closing valve - Google Patents
Hydraulic flow-limiting overpressure self-closing valve Download PDFInfo
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- CN101566179A CN101566179A CNA2009100985498A CN200910098549A CN101566179A CN 101566179 A CN101566179 A CN 101566179A CN A2009100985498 A CNA2009100985498 A CN A2009100985498A CN 200910098549 A CN200910098549 A CN 200910098549A CN 101566179 A CN101566179 A CN 101566179A
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Abstract
The invention discloses a hydraulic flow-limiting overpressure self-closing valve, comprising a valve body (20). The valve body (20) is internally provided with an adjustable valve module, and also with a pressure passage (19), a pressure chamber (4) and a drain back passage. The pressure passage (19), the pressure chamber (4), the adjustable valve module and the drain back passage (6) are sequentially communicated. The valve body (20) is respectively provided with a pressure guide hole (12) and a drain back guide hole (9), the pressure guide hole (12) is communicated with the pressure passage (19), and the drain back guide hole (9) is communicated with the drain back passage (6); and a flow-limiting valve cock channel (23) is communicated with the pressure chamber (4) after penetrating through the pressure passage (19) and internally provided with a flow-limiting valve module used for adjusting the section flow rate of the pressure passage (19). The hydraulic flow-limiting overpressure self-closing valve is simple in structure and good in flow-limiting and self-closing effect.
Description
Technical field
The present invention relates to a kind of hydrovalve, particularly a kind of hydraulic flow-limiting overpressure self-closing valve.
Background technique
Existing on the market at present self closing stop valve has: self-closing valve for tube bursting, the self closing stop valve of stopping the supple of gas or steam, gas self-closing valve, nothing are pressed self closing stop valve, the self closing stop valve that comes off, bath delay self-closing valve, diving self closing stop valve peculiar to vessel, the self-closing protective gear of oily vapour conveyance conduit superpressure etc.Above-mentioned self closing stop valve all can't be realized the superpressure current limliting and the self-closing and post-decompression auto-reset function of superpressure of hydraulic pressure.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of simple in structure, current limliting and self-closing effective hydraulic flow-limiting overpressure self-closing valve.
In order to solve the problems of the technologies described above, the invention provides a kind of hydraulic flow-limiting overpressure self-closing valve, comprise valve body, be provided with the adjustable valve assembly in the valve body, also be provided with pressure channel, pressure chamber and drainback passage in valve body, pressure channel, pressure chamber, adjustable valve assembly and drainback passage are connected successively; Be respectively equipped with pressure pilot hole and oil return pilot hole on the valve body, the pressure pilot hole is connected with pressure channel, and the oil return pilot hole is connected with drainback passage; Current limliting bibcock passage is connected with the pressure chamber after running through pressure channel, is provided with the flow-limiting valve assembly that is used to regulate pressure channel cross section flow in the current limliting bibcock passage.
Improvement as hydraulic flow-limiting overpressure self-closing valve of the present invention: self-closing bibcock passage runs through pressure channel and drainback passage, is provided with the self closing stop valve assembly that is used to regulate drainback passage cross section flow in the self-closing bibcock passage.
Further improvement as hydraulic flow-limiting overpressure self-closing valve of the present invention: self-closing bibcock channel bit is between pressure pilot hole and current limliting bibcock passage.
Further improvement as hydraulic flow-limiting overpressure self-closing valve of the present invention: establish the valve seat of passage and the adjusting needle that matches with passage in the adjustable valve assembly comprises, valve seat and valve body are fixedly linked, and the two ends of passage are connected with pressure chamber and drainback passage respectively; Regulating needle links to each other with lock nut and valve body are up and down by adjusting nut.
Further improvement as hydraulic flow-limiting overpressure self-closing valve of the present invention: the flow-limiting valve assembly comprises continuous current limliting bibcock and flow-limiting valve spring, and the current limliting bibcock that horizontally slips in current limliting bibcock passage is used to change pressure channel cross section flow.
Further improvement as hydraulic flow-limiting overpressure self-closing valve of the present invention: the self closing stop valve assembly comprises continuous overpressure self-closing valve bolt and self closing stop valve spring, and the overpressure self-closing valve bolt that horizontally slips in self-closing bibcock passage is used to change drainback passage cross section flow.
Hydraulic flow-limiting overpressure self-closing valve of the present invention, flow-limiting valve assembly and the interaction of self closing stop valve assembly, 2 can interact; What the present invention taked is the design that the transverse section bolt closes, overcome in the hydrovalve common when external and internal pressure near the time buzz that sends because of the spool vibrations, the stability and the working life of having improved whole valve body.Flow-limiting overpressure self-closing valve of the present invention need not go the valve of cutting out operates after external force is removed by other actions or power, just can automatically terminate closed condition, and bibcock can be got back to initial state.Flow-limiting overpressure self-closing valve of the present invention, during actual the use, setting pressure switch or pressure transducer behind the removal end socket, thus the signal conversion of power is become electrical signal.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Fig. 1 is the sectional structure schematic representation of hydraulic flow-limiting overpressure self-closing valve of the present invention;
Fig. 2 is the enlarged diagram of A under the local closed condition of flow-limiting valve assembly among Fig. 1;
Fig. 3 is the enlarged diagram of A under flow-limiting valve assembly full closing state among Fig. 1.
Embodiment
Embodiment 1, and Fig. 1 has provided a kind of hydraulic flow-limiting overpressure self-closing valve, comprises valve body 20, is provided with pressure channel 19, pressure chamber 4, drainback passage 6 and adjustable valve assembly in valve body 20.The adjustable valve assembly is used to regulate flow.
Establish the valve seat 5 of passage 51 and the adjusting needle 3 that matches with this passage 51 in the adjustable valve assembly comprises, valve seat 5 is fixedly mounted in the valve body 20.
Regulate needle 3 by adjusting nut 2 and lock nut 1 and 20 up and down linking to each other of valve body, be specially: adjusting nut 2 is fixedly mounted in the valve body 20, between the outer surface of adjusting nut 2 and valve body 20, seal ring 21 is set, thereby guarantees the sealing between adjusting nut 2 and the valve body 20.The outer surface of regulating needle 3 is provided with the outside thread that matches with adjusting nut 2, and dependence is threaded, and regulating needle 3 can move up and down along adjusting nut 2.The upper end of regulating needle 3 is sleeved in the lock nut 1, and for screw thread links to each other, this surrounds and is provided with Sealing 22 in the gap that forms at lock nut 1, adjusting nut 2 and adjusting needle 3 between lock nut 1 and the adjusting nut 2.When lock nut 1 and adjusting nut 2 closely fixedly the time, Sealing 22 back that is squeezed produces certain deformation, and Sealing 22 just presses lock nut 1, adjusting nut 2 and adjusting needle 3 simultaneously, thereby reaches the effect of sealing.
The bottom of regulating needle 3 is for being inverted shape cone 31, and this is inverted shape cone 31 over against passage 51; Be inverted shape cone 31 and passage 51 upper-lower position relation each other by changing, can effectively change the flow of passage 51.Pressure chamber 4 is positioned at the top of passage 51, and drainback passage 6 is positioned at the below of passage 51, regulates needle 3 and is positioned at pressure chamber 4; Pressure channel 19, pressure chamber 4, passage 51 and drainback passage 6 are connected successively.Be respectively equipped with pressure pilot hole 12 and oil return pilot hole 9 on valve body 20, pressure pilot hole 12 is connected with pressure channel 19, and oil return pilot hole 9 is connected with drainback passage 6.
Be provided with the current limliting bibcock passage 23 that an end connects valve body 20 in valve body 20, this current limliting bibcock passage 23 laterally runs through pressure channel 19 backs and is connected with pressure chamber 4.Be provided with spring seat 16 and the flow-limiting valve assembly that is used to regulate pressure channel 19 cross section flows in current limliting bibcock passage 23, spring seat 16 is fixedly linked with valve body 20.
This flow-limiting valve assembly comprises current limliting bibcock 18 and flow-limiting valve spring 15.This current limliting bibcock 18 is a cylindrical body, this cylindrical diameter is slightly less than the aperture of current limliting bibcock passage 23, outer surface at this cylindrical body intermediate section is provided with groove 181, thereby makes current limliting bibcock 18 form the dumbbell shaped that two ends, left and right sides diameter is big, mid diameter is little; The left side of current limliting bibcock 18 is provided with a recess, and recess, the other end that flow-limiting valve spring 15 1 ends that are positioned at current limliting bibcock passage 23 are supporting above-mentioned current limliting bibcock 18 are supporting spring seat 16.Between internal surface, seal ring 14 is set, thereby guarantees that pressure channel 19 interior highly pressurised liquids can not reveal near the outer surface of the current limliting bibcock 18 of spring seat 16 and current limliting bibcock passage 23.Under normal circumstances (when being the fluid flow of fluid flow≤setting of flowing into of pressure pilot hole 12), groove 181 is positioned at pressure channel 19.When the hydraulic pressure of actual hydraulic pressure＞setting, the half section meeting in the right side of current limliting bibcock 18 moves to left to pressure channel 19, thereby reduces the circulation area of pressure channel 19, until thorough retaining pressure passage 19.
Be provided with the self closing stop valve passage 11 that connects valve body 20 in valve body 20, this self-closing bibcock passage 11 laterally runs through pressure channel 19 and drainback passage 6.Self-closing bibcock passage 11 is positioned at the below of current limliting bibcock passage 23, so pressure channel 19 elder generation's process self closing stop valve passages 11, and then through current limliting bibcock passage 23.In self closing stop valve passage 11, be provided with self closing stop valve end socket 7 and the self closing stop valve assembly that is used to regulate drainback passage 6 cross section flows, self closing stop valve end socket 7 is fixedly linked with valve body 20, the effect of spring seat of having held concurrently of this self closing stop valve end socket 7, rely on Sealing 71 to realize sealing between self closing stop valve end socket 7 and the valve body 20, self closing stop valve end socket 7 is positioned at the right-hand member of self closing stop valve passage 11.This self closing stop valve assembly comprises overpressure self-closing valve bolt 10 and self closing stop valve spring 8; The two ends of self closing stop valve spring 8 are being supported self closing stop valve end socket 7 and overpressure self-closing valve bolt 10 respectively.Overpressure self-closing valve bolt 10 is a cylindrical body, and the diameter of overpressure self-closing valve bolt 10 is slightly less than the aperture of self closing stop valve passage 11.When overpressure self-closing valve bolt 10 moves to right to drainback passage 6, can reduce the circulation area of drainback passage 6, until closing in self closing stop valve passage 11.The elastic force of self closing stop valve spring 8 is greater than the elastic force of flow-limiting valve spring 15.Left end at self closing stop valve passage 11 is provided with end socket 17, also is provided with several end sockets 17 on valve body 20, and these end sockets 7 are connected with pressure channel 19 respectively, and 20 of end socket 7 and valve bodies are provided with Sealing.Also be provided with mounting hole 13 on valve body 20, this mounting hole 13 is used for fixing whole hydraulic flow-limiting overpressure self-closing valve.
Hydraulic flow-limiting overpressure self-closing valve of the present invention, practical work process is as follows:
1, by mounting hole 13, whole hydraulic flow-limiting overpressure self-closing valve is installed in the hydraulic system; Hydraulic oil in the hydraulic system enters in the hydraulic flow-limiting overpressure self-closing valve of the present invention from pressure pilot hole 12, discharges hydraulic flow-limiting overpressure self-closing valve of the present invention from oil return pilot hole 9 at last, flows in the hydraulic system.
2, unclamp lock nut 1, regulate needle 3 and move up and down, be used for the distance between regulating and controlling needle 3 and the valve seat 5, promptly regulate the distance of being inverted between shape cone 31 and the passage 51, thereby play the effect of regulating flow along adjusting nut 2.Set when requiring when reaching, tighten lock nut 1, regulate needle 3 and concern with position between the valve seat 5 and effectively fixed thereby make.When tightening lock nut 1, after being squeezed, Sealing 22 produces certain deformation, and Sealing 22 just presses lock nut 1, adjusting nut 2 simultaneously and regulates needle 3, thereby reaches the effect of sealing.
3, hydraulic oil is in pressure pilot hole 12 feed pressure passages 19, and passage 51, drainback passage 6 in the pressure chamber 4 that flows through successively then, the valve seat 5 are discharged from oil return pilot hole 9 at last.
When hydraulic fluid flow rate≤setting flow, groove 181 is positioned at pressure channel 19, and this moment, pressure channel 19 kept normal cross section flow.
When hydraulic fluid flow rate＞setting flow, because the increase of flow, and the permission flow of passage 51 does not change, so the pressure in pressure chamber 4 and the pressure channel 19 all can rise.Because the elastic force of self closing stop valve spring 8 is greater than the elastic force of flow-limiting valve spring 15; Therefore under the effect of identical power, flow-limiting valve spring 15 can be compressed prior to self closing stop valve spring 8.Flow-limiting valve spring 15 is compressed, and current limliting bibcock 18 will be moved to the left, and groove 181 shifts out in pressure channel 19, and the right-hand part of current limliting bibcock 18 enters in the pressure channel 19, thereby reduces the circulation area (being that pressure channel 19 is partially closed) of pressure channel 19; As shown in Figure 2.Because pressure channel 19 is partially closed, so flow reduces, thereby makes the flow of regulating between needle 3 and the valve seat 5 equal flow between current limliting bibcock 18 and the pressure channel 19 substantially.
But, owing to the flow that enters pressure channel 19 from pressure pilot hole 12 does not reduce because of the metering function of current limliting bibcock 18, therefore cause raising at pressure pilot hole 12 to the pressure in this section pressure channel 19 between the current limliting bibcock passage 23, thereby can overcome self closing stop valve spring 8 resistances, self closing stop valve spring 8 is compressed, and overpressure self-closing valve bolt 10 moves to right to drainback passage 6; Drainback passage 6 is closed by overpressure self-closing valve bolt 10, and the liquid of regulating the gap between needle 3 and the valve seat 5 that comes out to flow through then from pressure chamber 4 can't flow out from drainback passage 6, thereby make the pressure in the pressure chamber 4 raise rapidly.Because the pressure in the pressure chamber 4 further raises, thereby flow-limiting valve spring 15 is further compressed, the circulation area of pressure channel 19 further reduces.Thoroughly stopped up by current limliting bibcock 18 until pressure channel 19, as shown in Figure 3.
Like this, just realized the self-closing effect of whole valve body, the flow of turnover valve body of the present invention is thoroughly cut off, thereby whole hydraulic system is quit work.
4, during actual the use, can remove end socket 17, replace to pressure switch or pressure transducer, pressure switch converts hydraulic coupling to electrical signal, carries out corresponding work thereby control corresponding electrical equipment, for example cuts off the electricity supply, alarm or brake or the like.
At last, it is also to be noted that what more than enumerate only is a specific embodiment of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (6)
1, a kind of hydraulic flow-limiting overpressure self-closing valve, it is characterized in that: comprise valve body (20), described valve body is provided with the adjustable valve assembly in (20), also be provided with pressure channel (19), pressure chamber (4) and drainback passage (6) in valve body (20), described pressure channel (19), pressure chamber (4), adjustable valve assembly and drainback passage (6) are connected successively; Be respectively equipped with pressure pilot hole (12) and oil return pilot hole (9) on the valve body (20), pressure pilot hole (12) is connected with pressure channel (19), and oil return pilot hole (9) is connected with drainback passage (6); Current limliting bibcock passage (23) runs through pressure channel (19) back and is connected with pressure chamber (4), is provided with the flow-limiting valve assembly that is used to regulate pressure channel (19) cross section flow in the described current limliting bibcock passage (23).
2, hydraulic flow-limiting overpressure self-closing valve according to claim 1, it is characterized in that: self-closing bibcock passage (11) runs through pressure channel (19) and drainback passage (6), is provided with the self closing stop valve assembly that is used to regulate drainback passage (6) cross section flow in the described self-closing bibcock passage (11).
3, hydraulic flow-limiting overpressure self-closing valve according to claim 2 is characterized in that: described self-closing bibcock passage (11) is positioned between pressure pilot hole (12) and the current limliting bibcock passage (23).
4, according to claim 1,2 or 3 described hydraulic flow-limiting overpressure self-closing valves, it is characterized in that: establish the valve seat (5) of passage (51) and the adjusting needle (3) that matches with described passage (51) in described adjustable valve assembly comprises, valve seat (5) is fixedly linked with valve body (20), and the two ends of passage (51) are connected with pressure chamber (4) and drainback passage (6) respectively; Regulate needle (3) by adjusting nut (2) and lock nut (1) and up and down linking to each other of valve body (20).
5, hydraulic flow-limiting overpressure self-closing valve according to claim 4, it is characterized in that: described flow-limiting valve assembly comprises continuous current limliting bibcock (18) and flow-limiting valve spring (15), and the current limliting bibcock (18) that horizontally slips in current limliting bibcock passage (23) is used to change pressure channel (19) cross section flow.
6, hydraulic flow-limiting overpressure self-closing valve according to claim 5, it is characterized in that: described self closing stop valve assembly comprises continuous overpressure self-closing valve bolt (10) and self closing stop valve spring (8), and the overpressure self-closing valve bolt (10) that horizontally slips in self-closing bibcock passage (11) is used to change drainback passage (6) cross section flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100985498A CN101566179B (en) | 2009-05-14 | 2009-05-14 | Hydraulic flow-limiting overpressure self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100985498A CN101566179B (en) | 2009-05-14 | 2009-05-14 | Hydraulic flow-limiting overpressure self-closing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101566179A true CN101566179A (en) | 2009-10-28 |
| CN101566179B CN101566179B (en) | 2011-03-23 |
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ID=41282501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100985498A Expired - Fee Related CN101566179B (en) | 2009-05-14 | 2009-05-14 | Hydraulic flow-limiting overpressure self-closing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101566179B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105879803A (en) * | 2014-12-16 | 2016-08-24 | 江苏华益科技有限公司 | Simple nuclear medicine synthesizing device |
| CN108472650A (en) * | 2015-12-22 | 2018-08-31 | 埃佩多夫股份公司 | Liquid shifting equipment and its manufacturing method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3330135C2 (en) * | 1983-08-20 | 1985-10-10 | Georg Rost & Söhne Armaturenfabrik GmbH & Co KG, 4952 Porta Westfalica | Self-closing valve |
| CN2326798Y (en) * | 1998-03-16 | 1999-06-30 | 常文恕 | High-low-pressure self-closing safety valve |
| CN2714921Y (en) * | 2004-08-03 | 2005-08-03 | 赵洪恕 | Liquid self-closing flow-limiting valve |
| EP1746317A1 (en) * | 2005-07-22 | 2007-01-24 | Arrow Line S.R.L. | Self-closing valve with adjustable activation |
-
2009
- 2009-05-14 CN CN2009100985498A patent/CN101566179B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105879803A (en) * | 2014-12-16 | 2016-08-24 | 江苏华益科技有限公司 | Simple nuclear medicine synthesizing device |
| CN108472650A (en) * | 2015-12-22 | 2018-08-31 | 埃佩多夫股份公司 | Liquid shifting equipment and its manufacturing method |
| CN108472650B (en) * | 2015-12-22 | 2021-01-26 | 埃佩多夫股份公司 | Pipetting device and method for the production thereof |
| US11338281B2 (en) | 2015-12-22 | 2022-05-24 | Eppendorf Ag | Pipetting device and method for producing same |
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| Publication number | Publication date |
|---|---|
| CN101566179B (en) | 2011-03-23 |
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Granted publication date: 20110323 Termination date: 20130514 |