CN104214376A - Double action type plug check valve - Google Patents
Double action type plug check valve Download PDFInfo
- Publication number
- CN104214376A CN104214376A CN201410441712.7A CN201410441712A CN104214376A CN 104214376 A CN104214376 A CN 104214376A CN 201410441712 A CN201410441712 A CN 201410441712A CN 104214376 A CN104214376 A CN 104214376A
- Authority
- CN
- China
- Prior art keywords
- cock
- inlet passage
- valve
- passage
- limit position
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
- F16K15/1821—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism for check valves with a hinged or pivoted closure member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/184—Combined check valves and actuated valves
- F16K15/1848—Check valves combined with valves having a rotating tap or cock
Abstract
The invention relates to a double action type plug check valve, which belongs to the technical field of fluid control valves. Both sides of the valve body passage of the valve respectively communicate with an inlet passage and an outlet passage; an openable and closable valve clack is articulated with the inner end of the inlet passage, a plug with a C-shaped section is mounted in the valve body passage, one side of the C-shaped section, which is opposite to a C-shaped opening, is provided with a window, the plug is provided with a first limit position and a second limit position, and the window is completely closed by the valve body passage at the first limit position, and fully communicates with the outlet passage at the second limit position; at the first limit position, the inner side of the valve clack is tangent to the outer circle of the plug, closing the inlet passage, and at the second position, the valve clack enters the C-shaped section opening of the plug, opening the inlet passage. The double action type plug check valve has double closing actions, and thereby is still capable of reliable check and sealing under a low-pressure medium environment. Meanwhile, the double action type plug check valve can effectively control flow, and is highly reliable.
Description
Technical field
The present invention relates to a kind of cock safety check, relate in particular to a kind of double action cock safety check, belong to fluid control valve technical field.
Background technique
Swing check valve is a kind of conventional valve.Existing this type of valve mainly forms by being located at bearing pin in valve body, rocking bar, flap etc., its narrow limitation generally having be can not pilot line in the size of flow, and non-return sealing during low pressure is unreliable.
Retrieval is found, application number is that 201310097276.1 Chinese invention patent discloses a kind of Swing check valve, comprise valve body and be arranged on the valve gap on valve body, in valve body, be provided with inlet passage and outlet passage, a side at valve inner inlet passage is provided with valve seat, in valve seat, be provided with the passage being interconnected with inlet passage, in valve body, be provided with the flap cooperatively interacting with valve seat, flap fixes by fixing bolt and the one end that is arranged on the rocking bar in valve body, the other end of rocking bar is arranged on valve body by bearing pin, the middle part of rocking bar is connected with one end of connecting rod, the other end of connecting rod is connected with one end of movable rod by bearing pin, one end at movable rod is provided with chute, the other end of movable rod is connected with the lower end of valve rod by sliding pin, sliding pin is slidably arranged in the chute cooperatively interacting with it, the upper end of valve rod is connected with handle, valve body in be provided with the triangle limiting stopper cooperatively interacting with fixing bolt.Sealing during like this for solution low pressure should have certain effect, but obviously undesirable for flow control.
Summary of the invention
The object of the invention is to: the deficiency existing for above-mentioned prior art, by architecture advances, proposes a kind of can assurance under low pressure seal performance prerequisite, double action cock safety check that can conveniently regulating and controlling rate-of flow.
In order to achieve the above object, double action cock safety check of the present invention comprises the valve body with round Fluid cutting-off valve body passage, and the valve gap that covers valve channel is housed on described valve body, and the both sides of described valve channel are communicated with respectively inlet passage and outlet passage; The inner of described inlet passage is equipped with a side and by bearing pin, is cut with scissors the able to turn on or off flap that is loaded on valve body, and described bearing pin is equipped with and makes flap be tending towards the torsion spring of opening; The C tee section cock matching is with it housed in described valve channel, the side that described C tee section is relative with C shape opening has window, the rotating shaft of described cock is connected with handle after extending valve gap middle part, described cock have described window by complete totally enclosed the first limit position of valve channel and with full communicating the second limit position of outlet passage; When in the first limit position, the state that the cylindrical of described flap in inner side and cock be tangent, close inlet passage, when in the first limit position, described flap in enter cock C tee section opening, open the state of inlet passage.
Adopt after the present invention, due in off position, the flap of interlock and cock are respectively in closing the position of inlet passage and shutoff valve channel mutually, therefore there is the effect of double shut, and because flap is by cock cylindrical pressure holding state, thereby under low pressure media environment, also reliably non-return sealing.Meanwhile, between the two poles of the earth of closing completely and opening are completely spacing, the window of cock is communicated with the process in cross section in expanding gradually with outlet passage, and the also state in opening gradually simultaneously of flap, so can Effective Regulation flow, very safe reliably.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is the structural representation of a preferred embodiment of the invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
Fig. 4 is the opening state schematic diagram of Fig. 3.
Above in each figure: valve body 1, flap 2, seal ring 3, plug screw 4, bearing pin 5, torsion spring 6, cock 7, pad 8, valve gap 9, O type circle 10, positioning ring 11, screw 12, indicator 13, screw 14, pin 15, handle 16, double-screw bolt 17, nut 18.
Embodiment
Embodiment one
The double action cock safety check of the present embodiment as shown in Figure 1, Figure 2, Figure 3 shows, has on the valve body 1 of round Fluid cutting-off valve body passage the valve gap 9 that covers valve channel is housed.It is bell-mouthed inlet passage IN and outlet passage OUT that the both sides of valve channel are communicated with respectively outer end.The inner of inlet passage IN forms the seam 1-1 that stretches into valve channel, and flap 2 one sides of able to turn on or off seam are loaded on valve body 1 by vertical bearing pin 5 hinges, and its end face with respect to seam 1-1 is embedded with seal ring 3.Bearing pin 5 is equipped with and makes flap 2 be tending towards the torsion spring 6 of opening.The C tee section cock 7 matching is with it housed in valve channel, the side that C tee section is relative with C shape opening has the window 7-1 that cross section is chamfering rectangle, the cross section of the sectional shape of outlet passage OUT and window 7-1 matches, its width is less than the width of inlet passage IN, and the width of C shape opening is greater than the width of inlet passage IN.The rotating shaft of cock 7 is connected with handle 15 after extending valve gap 9 middle parts.
The window 7-1 of cock 7 by complete totally enclosed the first limit position of valve channel as shown in Figure 3, the state that now, the cylindrical of flap 2 in inner side and cock 7 be tangent, close inlet passage IN.The second limit position of the window 7-1 unlatching valve channel of cock 7 as shown in Figure 4, now, flap 2 under the effect of torsion spring in the C tee section opening in entering cock, open the state of inlet passage IN, and because the width of C shape opening is greater than the width of inlet passage IN and the width of inlet passage IN is greater than the width of outlet passage OUT, therefore make the passage through valve channel between it open wide completely, not interrupted.
Handle 16 rotarily drives flap 2 and goes in the first limit position process from the second limit position, window 7-1 reduces by the state being docked and connected completely with outlet passage OUT completely the sectional area that it is communicated with gradually gradually, therefore can play the effect of regulating flow as required, and in this process, flap 2 effect that also the corresponding rotation because of cock 7 overcomes torsion spring 6 is tending towards reducing that inlet passage opens wide degree, flow resistance becomes large gradually gradually, even if therefore pressure changes, also can keep the stable of Flow-rate adjustment.And in this process, because the width of window 7-1 is less than the width of inlet passage, therefore first valve channel is blocked in cock 7 completely, then reach the first limit position, the cylindrical of the inner side of flap 2 and cock 7 is tangent, and seal ring 3 pressurizeds of its end face setting-in are resisted against on the opposing end surface of seam 1-1, inlet passage IN is closed completely, be understood that, no matter pressure medium is big or small, and the effect of this double shut can reliable guarantee sealing.It is contrary that handle 16 rotarily drives the situation that flap 2 goes to the second limit position from the first limit position, separately do not repeat.
In addition, the ovality of valve channel is controlled at inlet passage to outlet passage orient diameter and is less than inlet passage to exporting Vertical direction diameter, and being controlled at C shape opening to the radius of window direction, the ovality of cock is greater than C shape opening to the radius of window Vertical direction, while making like this cock rotary closing flap reach the first limit position, the deviation of ovality also will make it gradually to the extruding of seam end face, thereby long-term use also can be guaranteed sealing.
Evidence, the present embodiment tool has the following advantages: the sealing surface of flap and valve body inlet passage adopts plane sealing, has the soft seal of embedding ring annular groove in the plane of flap, and therefore sealing is reliable.Cock entrance point is wider than outlet end window width, rotates the size of energy pilot line medium flow in 1/4 process of enclosing.Cock closed position, lateral extrusion flap, seals more reliable.Valve flowing channel adopts airflow design, complete complete the opening of flap during unlatching, and runner is without hindrance, and flow resistance is little.In a word, due to flap and cock are organically combined dexterously, while therefore closing non-return, the sealability of self is very reliable, and can in opening process, realize the accuracy controlling of regime flow.
Claims (5)
1. a double action cock safety check, comprises the valve body with round Fluid cutting-off valve body passage, and the valve gap that covers valve channel is housed on described valve body, and the both sides of described valve channel are communicated with respectively inlet passage and outlet passage; It is characterized in that: the inner of described inlet passage is equipped with a side and by bearing pin, is cut with scissors the able to turn on or off flap that is loaded on valve body, described bearing pin is equipped with and makes flap be tending towards the torsion spring of opening; The C tee section cock matching is with it housed in described valve channel, the side that described C tee section is relative with C shape opening has window, the rotating shaft of described cock is connected with handle after extending valve gap middle part, described cock have described window by complete totally enclosed the first limit position of valve channel and with full communicating the second limit position of outlet passage; When in the first limit position, the state that the cylindrical of described flap in inner side and cock be tangent, close inlet passage, when in the first limit position, described flap in enter cock C tee section opening, open the state of inlet passage.
2. double action cock safety check according to claim 1, it is characterized in that: the sectional shape of described outlet passage and the cross section of window match, the width of described window is less than the width of inlet passage, and the width of described C shape opening is greater than the width of inlet passage.
3. double action cock safety check according to claim 2, it is characterized in that: the ovality of described valve channel is controlled at inlet passage to outlet passage orient diameter and is less than inlet passage to exporting Vertical direction diameter, and the ovality of cock is controlled at C shape opening to the radius of window direction, be greater than C shape opening to the radius of window Vertical direction.
4. double action cock safety check according to claim 3, is characterized in that: the inner of described inlet passage forms the seam that stretches into valve channel.
5. double action cock safety check according to claim 4, is characterized in that: described flap is embedded with seal ring with respect to the end face of seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410441712.7A CN104214376A (en) | 2014-09-01 | 2014-09-01 | Double action type plug check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410441712.7A CN104214376A (en) | 2014-09-01 | 2014-09-01 | Double action type plug check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104214376A true CN104214376A (en) | 2014-12-17 |
Family
ID=52096149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410441712.7A Pending CN104214376A (en) | 2014-09-01 | 2014-09-01 | Double action type plug check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104214376A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111226563A (en) * | 2017-07-21 | 2020-06-05 | 王涛涛 | Agricultural fertilizer intelligence sprinkler |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB957431A (en) * | 1960-08-18 | 1964-05-06 | Norman Harold Haenky | Improvements in or relating to fluid flow control valves |
| US3565099A (en) * | 1970-01-02 | 1971-02-23 | John M Young | Reversible check valve |
| JPH11304018A (en) * | 1998-04-17 | 1999-11-05 | Tohatsu Corp | Water delivery valve for fire pump |
| JPH11304017A (en) * | 1998-04-17 | 1999-11-05 | Tohatsu Corp | Water delivery valve for fire pump |
| US6098659A (en) * | 2000-01-04 | 2000-08-08 | J. Barry Cook | Combined directional and flow control valve |
| CN102022568A (en) * | 2010-06-24 | 2011-04-20 | 张长海 | Front valve of elongated-hole wind-gas linked energy-saving stove |
-
2014
- 2014-09-01 CN CN201410441712.7A patent/CN104214376A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB957431A (en) * | 1960-08-18 | 1964-05-06 | Norman Harold Haenky | Improvements in or relating to fluid flow control valves |
| US3565099A (en) * | 1970-01-02 | 1971-02-23 | John M Young | Reversible check valve |
| JPH11304018A (en) * | 1998-04-17 | 1999-11-05 | Tohatsu Corp | Water delivery valve for fire pump |
| JPH11304017A (en) * | 1998-04-17 | 1999-11-05 | Tohatsu Corp | Water delivery valve for fire pump |
| US6098659A (en) * | 2000-01-04 | 2000-08-08 | J. Barry Cook | Combined directional and flow control valve |
| CN102022568A (en) * | 2010-06-24 | 2011-04-20 | 张长海 | Front valve of elongated-hole wind-gas linked energy-saving stove |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111226563A (en) * | 2017-07-21 | 2020-06-05 | 王涛涛 | Agricultural fertilizer intelligence sprinkler |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141217 |
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| WD01 | Invention patent application deemed withdrawn after publication |