CN1318789C - Automatic ultra-micropressure pressure limiting adjusting valves - Google Patents
Automatic ultra-micropressure pressure limiting adjusting valves Download PDFInfo
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- CN1318789C CN1318789C CNB2003101126687A CN200310112668A CN1318789C CN 1318789 C CN1318789 C CN 1318789C CN B2003101126687 A CNB2003101126687 A CN B2003101126687A CN 200310112668 A CN200310112668 A CN 200310112668A CN 1318789 C CN1318789 C CN 1318789C
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- valve
- pressure limiting
- pressure
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Abstract
The present invention relates to an automatic ultra-micro pressure limiting and regulating valve which comprises a valve body, a valve cover and a valve rod, wherein the valve body is connected with the valve cover and is provided with an annular valve seat; the outer side surface of the annular valve seat is provided with a sealing ring with a convex toothed ring. A shaft sleeve of a sleeve barrel, which penetrates in a supporting hole of the valve cover, is installed on the valve rod; a shaft of a sleeve barrel, which is connected with the valve rod, axially moves in the supporting hole. A bearing is arranged on the valve rod positioned in the valve body, and an outer valve disc made of light materials is fixed on the bearing; an elastic sheet with an inclination angle is pushed on the outer end surface of the outer valve disc, and the limited pressure of the elastic sheet is regulated by a regulating piece. The outer valve disc axially moves on the valve rod according to pressure difference to be attached to or disconnected from a sealing ring on the end surface of the annular valve seat to limit pressure. Aiming at a specified sealed space environment, the present invention can automatically limit ultra-micro pressure which can be borne by indoor persons and need long-term maintenance. The present invention has the characteristics of simple structure, reliable operation, low manufacture cost, low use cost, high pressure limiting sensitivity and convenient voltage limiting regulation.
Description
Technical field
The present invention relates to a kind of ultra micro pressure controlled valve, especially relate to and a kind ofly seal cavity pressure is exceeded slight pressure in 250Pa～800Pa scope than external atmosphere pressure carry out the ultra micro of automatically pressure limiting and press the automatically pressure limiting pressure regulator valve.
Background technique
Present known pressure controlled valve or pressure-limit valve, no matter be at liquid or gas, because of fluid pressure or the gas pressure controlled are atmospheric multiple substantially,, and can not control and regulate the ultra micro pressure pressure of 250Pa～800Pa scope so the pressure-limit valve pilot pressure is all bigger.As will controlling and regulate to this slight pressure, generally just must adopt highi degree of accuracy, expensive sensor and some auxiliary facilities, complex structure not only, the functional reliability reduction, and also manufacturing cost and use cost is all very high.Therefore in specific seal space, the specific seal space environment of the protection work that the aseptic operating room that enters as height ultra-clean medicament compartment, anti-virus, anti-biological chemical gas are invaded, the civil air defense works who highly protects and military engineering etc., for make outdoor toxic and harmful can't inlet chamber in, so must make the indoor following ultra micro pressure of the outdoor relatively 800Pa of exceeding that remains, indoor occupant is being born under the situation of slight pressure, still can normally carry out work and life.This just needs a kind of sensitivity high, and lower-cost ultra micro pressure automatically pressure limiting pressure regulator valve, makes when indoor pressure surpasses the minute-pressure of setting, and opens valve automatically, reduces pressure automatically, can long-term work and life with staff in the holding chamber.
Summary of the invention
The present invention overcomes above-mentioned technical deficiency part, provide a kind of in the specific seal space environment, can carry out automatically pressure limiting to the ultra micro pressure that indoor occupant can bear and need keep for a long time, not only simple in structure, reliable operation, and manufacturing, user cost are low, pressure limiting is highly sensitive, and pressure limiting ultra micro easy to adjust is pressed the automatically pressure limiting pressure regulator valve.
Another object of the present invention provides a kind of simple in structure, when not needing pressure limiting, can close easily or the ultra micro of Open valve is pressed the automatically pressure limiting pressure regulator valve by manually-operable.
The present invention is that the technological scheme that solves the problems of the technologies described above is: a kind of ultra micro is pressed the automatically pressure limiting pressure regulator valve, comprise valve body, valve gap and valve rod, it is characterized in that: described valve body is connected with valve gap, and valve body is provided with ring-shaped valve seats, and the outer side surface of ring-shaped valve seats is equipped with the seal ring of band convex ring gear; The quill that is through in the valve gap bearing hole is sleeved on the valve rod, the quill that is connected with valve rod moves axially in bearing hole, the valve rod that is positioned at valve body is equipped with bearing, be fixed with the outer valve disc that lightweight material is made on the bearing, the shell fragment that has the inclination angle withstands on the exterior edge face of outer valve disc, and regulate the pressure limiting pressure of shell fragment by adjusting element, outer valve disc moves axially the seal ring of fitting or breaking away from the ring-shaped valve seats end face according to pressure reduction with valve rod and carries out pressure limiting.
The present invention for the technological scheme that solves above-mentioned further technical problem is: described quill is fixedlyed connected with handwheel respectively with valve rod, and be fixed with the interior valve disc of band spring seat on the quill, between the supporting base inboard of valve gap and spring seat, be provided with Returnning spring, on valve gap, be provided with the setting sleeve that limits the valve rod working position, when valve rod moves to maximum position laterally, interior valve disc is pressed on the seal ring of inner side surface of ring-shaped valve seats, makes valve be in closed condition; When valve rod moved to the neutral position laterally, inside and outside valve disc left the seal ring of ring-shaped valve seats bi-side simultaneously, and valve is shown in an open position.
Described setting sleeve and valve gap supporting base are made one or are the branch attachment structure, be arranged with three axial grooves that limit three kinds of working positions of valve rod on the sleeve of setting sleeve, the spacing block set of symmetry is connected to respectively in three axial grooves of setting sleeve on the rotational sleeve axle, makes valve be in corresponding pressure limiting, opening and closing state.
Wherein:
Described shell fragment is symmetrical arranged more than three, and the one end is connected with the shell fragment seat, and the angle of shell fragment and valve rod center line also has the micrometer adjusting screw of auxiliary adjustment shell fragment pressure at 25 °～60 ° in the outside of shell fragment seat.
The present invention adopts the advantage after the technique scheme to be:
1, can control automatically and regulate the ultra micro pressure of 250Pa～800Pa by simple, reliable structure.The present invention mainly adopts valve rod, is installed in outer valve disc and elastic piece structure on the valve rod, by the shell fragment that joins with outer valve disc small pressure reduction is carried out automatically pressure limiting control, and not only simple in structure, cost is low, and reliable operation, long service life.
2, highly sensitive.Automatically pressure limiting pressure regulator valve of the present invention adopts the shell fragment that has the inclination angle, therefore can press the sinusoidal curve track when shell fragment is stressed changes, can not only carry out pressure limiting to the ultra micro pressure of 250Pa～800Pa scope like this, and when outer valve disc when pressure limiting is worked, shell fragment of the present invention unlike common spring when the pressurized, amount of deformation increases along with the increase of pressure, linear variation, the amount of deformation of shell fragment then is to change by the sinusoidal curve track and reduce along with the increase of pressure, therefore automatically pressure limiting pressure regulator valve of the present invention can make indoor ultra micro be pressed in setting range by shell fragment to remain unchanged, and can reach the setting pressure deviate and be no more than ± variation of 5Pa, because the sensitivity of pressure limiting is very high, so can indoor ultra micro variation in pressure is controlled in the very little scope.In addition, the present invention is owing to adopted the seal ring that has the convex ring gear, and therefore in the pressure limiting process, outer valve disc is to be fitted on the convex ring gear, and pressure limiting is stable, thereby guarantees the high sensitivity of pressure regulation.
3, pressure limiting is easy to adjust.The present invention adopts adjusting element that the pressure of shell fragment is regulated, but also can further carry out the adjusting of trace to shell fragment by the micrometer adjusting screw in the shell fragment seat outside, and the size that can regulate shell fragment elastic force at any time, thereby indoor ultra micro is pressed to be adjusted in the pressure range of setting, the pressure limiting regulation structure is simple, and can regulate accurately, easily.
4, easy and simple to handle.The present invention adopts inside and outside bivalve dish structure, not only realize the automatically pressure limiting adjusting by outer valve disc and shell fragment, and by manual easy operation, valve disc is realized the quick closedown and the unlatching of valve in relying on, in time block the circulation of indoor and outdoor air or make indoor and outdoor air unimpeded, easy and simple to handle, simple in structure, reliable operation makes valve have high sensitivity, multi-functional characteristics.
5, sealing is reliable.Valve disc is to be pressed in the ring-shaped valve seats inner side surface to have on the seal ring of convex ring gear in of the present invention, so sealing is very reliable.
Working principle: be installed in valve of the present invention on the pipeline that communicates with specific seal space or directly be contained on its wall, when room pressure exceeds outdoor 250Pa～800Pa all the time, outer valve disc is being fitted under the elastic force effect of shell fragment on the convex ring gear of seal ring, chamber, inside and outside atmosphere draught-free; When indoor ultra micro pressure exceeds setting value, the ultra micro pressure that the room pressure that outer valve disc is subjected to surpass to be set, indoor air-flow overcomes the elastic force of shell fragment and pushes outer valve disc open, from ring-shaped valve seats and outside in the runner between the valve disc discharge outdoor; When indoor pressure was lower than the elastic force of shell fragment, then outer valve disc, was pressed indoor ultra micro and is limited to all the time in the scope of a setting by the axial motion of outer valve disc being fitted in again under the pressure effect of shell fragment on the convex ring gear of seal ring.When indoor when not needing pressure limiting, and when needing the circulation of blocking-up indoor and outdoor air, when moving to valve rod to maximum position outward, under the elastic force effect of Returnning spring, the interior valve disc that is connected on the quill is pressed on the convex ring gear of seal ring inner side surface.When the needs indoor and outdoor air is unimpeded, valve rod is transferred to the neutral position, inside and outside valve disc leaves the sealing surface of ring-shaped valve seats both sides simultaneously, the circulation of holding chamber inner air and outer air.
Description of drawings
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Fig. 1 is the structural representation that ultra micro of the present invention is pressed automatically pressure limiting pressure regulator valve pressure limiting state.
Fig. 2 is the structural representation that ultra micro of the present invention is pressed automatically pressure limiting pressure regulator valve open mode.
Fig. 3 is the structural representation that ultra micro of the present invention is pressed automatically pressure limiting pressure regulator valve closed condition.
Fig. 4 is the structure for amplifying schematic representation at handwheel of the present invention place.
Fig. 5 is the amplification sectional structure schematic representation of the A-A of Fig. 4.
Embodiment
Ultra micro shown in Fig. 1～3 is pressed the automatically pressure limiting pressure regulator valve, comprises valve body 11, valve gap 7 and valve rod 20.Valve body 11 and valve gap 7 are connected by flange, and valve body 11 peripheries are frame structure, are contained in guard 12 on framework, preventing extraneous impact to shell fragment, and influence the proper functioning of pressure regulator valve.The ring-shaped valve seats 11-1 that has convex on the valve body 11, the seal ring 19 that has the convex ring gear is equipped with in two sides of ring-shaped valve seats 11-1, sealing circle 19 can be bonded in the both sides of ring-shaped valve seats 11-1, or be sleeved on the ring-shaped valve seats 11-1, the cross section of seal ring 19 is " [" shape, two sides at seal ring 19 have plural convex ring gear, with the sealing of valve disc 10 in improving and the pressure limiting stability of outer valve disc 17.The quill 4 that is through in valve gap 7 bearing hole is sleeved on the valve rod 20, the quill 4 that is connected with valve rod 20 moves axially in bearing hole, see shown in Fig. 1～4, valve rod 20 is screwed on the handwheel 3, and valve rod 20 also is connected with lock nut 1 and nut 2, quill 4 is then by on the fixedly connected handwheel 3 of Cock screw, make valve rod 20 and quill 4 do axial motion together by handwheel 3, on valve gap 7, be provided with the setting sleeve 5 that limits valve rod 20 working positions, the valve rod 20 that is positioned at valve body 11 is equipped with bearing 18, this bearing is a sliding bearing, linear slide bearing preferably, be set with the outer valve disc 17 that lightweight material is made on the bearing 18, outer valve disc 17 is fixed on the bearing 18 by the retainer or the locking nut of its both sides, and the thickness of outer valve disc 17 can be between 0.2～1mm, and the shell fragment 16 that has the inclination angle withstands on the exterior edge face of outer valve disc 17, and regulate the pressure limiting pressure of shell fragments 16 by adjusting element 14, this adjusting element 14 can adopt nut to regulate and locking or by other adjusting element locking.Shell fragment of the present invention is symmetrical arranged more than 16 3, the one end is connected with shell fragment seat 15, one end withstands on the exterior edge face of outer valve disc 17, the angle of shell fragment 16 and valve rod 20 center lines is at 25 °～60 °, therefore when regulating the amount of deformation of shell fragment, then shell fragment 16 is to change by the sinusoidal curve track and reduce along with the increase of pressure, therefore makes valve of the present invention possess the characteristics of high sensitivity, adapts to ultra micro pressure is carried out automatically pressure limiting control in 250Pa～800Pa scope.The present invention also has the micrometer adjusting screw 13 of auxiliary adjustment shell fragment 16 pressure in the outside of shell fragment seat 15, to regulate pressure limiting pressure easily and accurately.When ultra micro of the present invention presses the automatically pressure limiting pressure regulator valve to be in the pressure limiting working state, when room pressure during less than the setting value of shell fragment 16, outer valve disc 17 end faces are fitted on the convex ring gear of seal ring 19 of ring-shaped valve seats 11-1, and when room pressure during greater than the setting value of shell fragment 16 pressure, air-flow is pushed outer valve disc 17 open and is released, and realizes the automatic adjusting of ultra micro pressure.
On the quill 4 of valve gap 7 one sides, be fixed with the interior valve disc 10 that has spring seat 9 and outside the distance between the seal face separately of valve disc 17 and ring-shaped valve seats 11-1 between 5mm～30mm.Spring seat 9 and interior valve disc 10 are for making integrative-structure, also can be the branch attachment structure, spring seat 9 is fixedly connected on the quill 4, and interior valve disc 10 is connected on the spring seat 9, is provided with Returnning spring 8 at the supporting base 7-1 of valve gap 7 between the inboard and spring seat 9, sees shown in Figure 3, when valve rod 20 moves to maximum position laterally, interior valve disc 10 is pressed in ring-shaped valve seats 11-1 inboard and has on the seal ring 19 of convex ring gear under the effect of Returnning spring 8, the circulation of blocking-up indoor and outdoor air.See shown in Figure 2ly, when valve rod 20 moved to the neutral position laterally, interior valve disc 10 and outer valve disc 17 left the seal ring 19 of ring-shaped valve seats 11-1 bi-side simultaneously, make valve be in open mode, and chamber, inner air and outer air keep circulating.
For the working position to valve rod 20 easily carrying out spacing, the supporting base 7-1 of setting sleeve 5 and valve gap 7 makes integrative-structure, or see Fig. 4, shown in 5, setting sleeve 5 is connected on the supporting base 7-1 of valve gap 7 by flange, be arranged with on the sleeve of setting sleeve 5 and limit the outside axial groove 5-1 of maximum position when mobile of valve rod 20, the axial groove 5-2 in neutral position and the axial groove 5-3 of minimum position, the spacing block set 4-1 of symmetry also is connected to respectively in three axial grooves of setting sleeve 5 on the rotational sleeve axle 4, valve disc 10 and the sealing of ring-shaped valve seats 11-1 inner side surface, the working position of valve closing in making; When interior valve disc 10 and outer valve disc 17 leave ring-shaped valve seats 11-1 both sides sealing face simultaneously, the working position of valve open; When outer valve disc 17 is fitted in ring-shaped valve seats 11-1 outside sealing surface, valve is in the working position of pressure limiting, be easy-to-operat, also be provided with and the corresponding Pointing sign board 6 of each axial groove in the side end face of setting sleeve 5, the present invention is by manually-operable, the multiple function that makes valve have pressure limiting, close and open.
Claims (10)
1, a kind of ultra micro is pressed the automatically pressure limiting pressure regulator valve, comprise valve body (11), valve gap (7) and valve rod (20), it is characterized in that: described valve body (11) is connected with valve gap (7), valve body (11) is provided with ring-shaped valve seats (11-1), and the outer side surface of ring-shaped valve seats (11-1) is equipped with the seal ring (19) of band convex ring gear; The quill (4) that is through in valve gap (7) bearing hole is sleeved on the valve rod (20), the quill (4) that is connected with valve rod (20) moves axially in bearing hole, the valve rod (20) that is positioned at valve body (11) is equipped with bearing (18), be fixed with the outer valve disc (17) that lightweight material is made on the bearing (18), the shell fragment (16) that has the inclination angle withstands on the exterior edge face of outer valve disc (17), and regulate the pressure limiting pressure of shell fragment (16) by adjusting element (14), outer valve disc (17) moves axially the seal ring (19) of fitting or breaking away from ring-shaped valve seats (11-1) end face according to pressure reduction and carries out pressure limiting on valve rod (20).
2, ultra micro according to claim 1 is pressed the automatically pressure limiting pressure regulator valve, it is characterized in that: described quill (4) is fixedlyed connected with handwheel (3) respectively with valve rod (20), and be fixed with the interior valve disc (10) of band spring seat (9) on the quill (4), be provided with Returnning spring (8) at the supporting base (7-1) of valve gap (7) between the inboard and spring seat (9), on valve gap (7), be provided with the setting sleeve (5) that limits valve rod (20) working position, when valve rod (20) when moving to maximum position laterally, interior valve disc (10) is pressed in ring-shaped valve seats (11-1) inner side surface and has on the seal ring (19) of convex ring gear, makes valve be in closed condition; When moving to the neutral position laterally, inside and outside valve disc (10), (17) are left the seal ring (19) of ring-shaped valve seats (11-1) bi-side simultaneously at valve rod (20), and valve is shown in an open position.
3, ultra micro according to claim 2 is pressed the automatically pressure limiting pressure regulator valve, it is characterized in that: also have setting sleeve (5), setting sleeve (5) is made one or is the branch attachment structure with valve gap (7) supporting base (7-1), be arranged with three axial grooves (5-1), (5-2), (5-3) that limit (20) three kinds of working positions of valve rod on the sleeve of setting sleeve (5), rotational sleeve axle (4) is gone up the spacing block set (4-1) of symmetry and is connected to respectively in three axial grooves of setting sleeve (5), makes valve be in corresponding pressure limiting, opening and closing state.
4, ultra micro according to claim 3 is pressed the automatically pressure limiting pressure regulator valve, it is characterized in that: also be provided with and the corresponding Pointing sign board of each axial groove (6) in the side end face of setting sleeve (5).
5, press the automatically pressure limiting pressure regulator valve according to the described ultra micro in one of claim 2 or 3, it is characterized in that: in described valve disc (10) and outer valve disc (17) and ring-shaped valve seats (11-1) separately the distance between the seal face at 5mm～30mm.
6, ultra micro according to claim 1 is pressed the automatically pressure limiting pressure regulator valve, and it is characterized in that: described shell fragment is symmetrical arranged more than (16) three, and the one end is connected with shell fragment seat (15), and the angle of shell fragment (16) and valve rod (20) center line is at 25 °～60 °.
7, ultra micro according to claim 6 is pressed the automatically pressure limiting pressure regulator valve, and it is characterized in that: the outside of described shell fragment seat (15) also has the micrometer adjusting screw (13) of auxiliary adjustment shell fragment (16) pressure.
8, ultra micro according to claim 1 and 2 is pressed the automatically pressure limiting pressure regulator valve, it is characterized in that: the cross section of described seal ring (19) is " [" shape, and two sides of seal ring (19) have plural convex ring gear.
9, ultra micro according to claim 1 is pressed the automatically pressure limiting pressure regulator valve, and it is characterized in that: described bearing (18) is the linear slide bearing.
10, ultra micro according to claim 1 is pressed the automatically pressure limiting pressure regulator valve, and it is characterized in that: the periphery of described valve body (11) framework is equipped with guard (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101126687A CN1318789C (en) | 2003-12-18 | 2003-12-18 | Automatic ultra-micropressure pressure limiting adjusting valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101126687A CN1318789C (en) | 2003-12-18 | 2003-12-18 | Automatic ultra-micropressure pressure limiting adjusting valves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1553068A CN1553068A (en) | 2004-12-08 |
| CN1318789C true CN1318789C (en) | 2007-05-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101126687A Expired - Lifetime CN1318789C (en) | 2003-12-18 | 2003-12-18 | Automatic ultra-micropressure pressure limiting adjusting valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1318789C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9372009B2 (en) * | 2007-08-17 | 2016-06-21 | Siemens Industry, Inc. | Pressure control with coarse and fine adjustment |
| CN108799586B (en) * | 2018-08-20 | 2024-06-25 | 常州市汇丰船舶附件制造有限公司 | Floating ball type air pipe head for ship |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2070388U (en) * | 1990-01-25 | 1991-01-30 | 苏汝利 | Pressure cabin exhaust valve |
| CN2140009Y (en) * | 1992-09-19 | 1993-08-11 | 童新 | Pressure type automatic adjusting valve for degree of vacuum |
| JPH10176762A (en) * | 1996-10-17 | 1998-06-30 | Akume:Kk | Flow regulating valve |
| JP2002012194A (en) * | 2000-06-30 | 2002-01-15 | Nippon Kaiyo Kk | Automatic spill valve for half-closed self-respiratory diving unit |
| CN2563390Y (en) * | 2002-06-17 | 2003-07-30 | 新化县科学技术信息研究所 | Pressure reducing and water saving valve for city water |
-
2003
- 2003-12-18 CN CNB2003101126687A patent/CN1318789C/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2070388U (en) * | 1990-01-25 | 1991-01-30 | 苏汝利 | Pressure cabin exhaust valve |
| CN2140009Y (en) * | 1992-09-19 | 1993-08-11 | 童新 | Pressure type automatic adjusting valve for degree of vacuum |
| JPH10176762A (en) * | 1996-10-17 | 1998-06-30 | Akume:Kk | Flow regulating valve |
| JP2002012194A (en) * | 2000-06-30 | 2002-01-15 | Nippon Kaiyo Kk | Automatic spill valve for half-closed self-respiratory diving unit |
| CN2563390Y (en) * | 2002-06-17 | 2003-07-30 | 新化县科学技术信息研究所 | Pressure reducing and water saving valve for city water |
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| Publication number | Publication date |
|---|---|
| CN1553068A (en) | 2004-12-08 |
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| C14 | Grant of patent or utility model | ||
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Assignee: CHANGZHOU HUIFENG MARINE ACCESSORY PRODUCE CO.,LTD. Assignor: Huifeng Ship Accessory Plant, Changzhou City Contract record no.: 2010320000833 Denomination of invention: Automatic ultra-micropressure pressure limiting adjusting valves Granted publication date: 20070530 License type: Exclusive License Open date: 20041208 Record date: 20100702 |
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| CX01 | Expiry of patent term |
Granted publication date: 20070530 |
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| CX01 | Expiry of patent term |