CN204922041U - From pressurizing sealed butterfly valve - Google Patents
From pressurizing sealed butterfly valve Download PDFInfo
- Publication number
- CN204922041U CN204922041U CN201520716506.2U CN201520716506U CN204922041U CN 204922041 U CN204922041 U CN 204922041U CN 201520716506 U CN201520716506 U CN 201520716506U CN 204922041 U CN204922041 U CN 204922041U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- rod
- hole
- seal ring
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a from pressurizing sealed butterfly valve, include valve body, valve rod, valve clack and can constitute sealed vice sealing washer with the valve clack, the sealing washer is for having the ring type seal who pressurizes the chamber, the sealing washer is installed on the valve body through the side pressure lid, be provided with and pressurize the valve body liquid through hole who leads to in the chamber on the valve body, still be provided with the valve body drainage hole of leading to with valve body outlet chamber on the valve body, be equipped with rotatable control lever in the valve rod, be provided with liquid inlet channel on valve rod and control lever, this liquid inlet channel of valve body liquid through hole accessible imports the chamber with the valve body and leads to, still be provided with the drainage passageway on valve rod and control lever, valve body liquid through hole accessible drainage passageway leads to with valve body drainage hole. This from pressurizing sealed butterfly valve can not only realize pressurizing the sealed effect of butterfly valve, and simple structure need not outside pressure medium system moreover.
Description
Background technique
The utility model relates to a kind of valve, particularly relates to a kind of improvement of butterfly valve seal structure.
Background technique
Butterfly valve drives flap reciprocating rotating about 90 ° to open, cut out or regulate a kind of valve of rate-of flow with valve rod.Its structure is simple, volume is little, lightweight, material consumption is economized, installation dimension is little, rapidly easy and simple to handle, be development very fast, apply one of more valve kind.But because butterfly valve adopts the sealing surface on flap excircle and the sealing surface on body cavity to form sealing pair, utilize sealing pair elastic element be squeezed produce resiliently deformable ensure sealing, thus in valve opening and closing process, there is larger friction, sealing surface is easily impaired, causes seal failure; Elastic element simultaneously in sealing pair uses inevitably plastic deformation after a period of time, also can cause the inefficacy of sealing.Therefore, the sealing effect of butterfly valve is not ideal, under mostly only can be used in the condition of mesolow.
The appearance of filling pressure sealing butterfly valve makes the above-mentioned existing problems of butterfly valve be greatly improved, it arranges pressurising chamber on the elastic element of sealing pair, when flap turns to closed position, utilize external agency to pressurising in the pressurising chamber on elastic element, make sealing pair close contact, thus ensure the sealing of butterfly valve, before butterfly valve is opened, shed the external pressure in pressurising chamber, thus reduce the operational torque of butterfly valve.But this kind of filling pressure sealing butterfly valve needs a set of external agency pressure system to maintain sealing effect, thus complex structure, and cost is high, and practical application is not extensive.
Model utility content
For the above-mentioned deficiency existing for prior art, technical problem to be solved in the utility model is to provide one from filling pressure sealing butterfly valve, and it can not only realize the sealing effect of pressurising butterfly valve, and structure is simple, without the need to external agency pressure system.
In order to solve the problems of the technologies described above, one of the present utility model is from filling pressure sealing butterfly valve, comprise valve body, valve rod, flap and can form the seal ring of sealing pair with flap, described seal ring is the O-ring seal with pressurising chamber, and described seal ring is arranged on valve body by side pressure lid; Valve body is provided with the valve body liquid-through hole led to pressurising chamber, valve body is also provided with the valve body leakage opening led to valve outlet chamber; In valve rod, be provided with rotating controlling rod, valve rod and controlling rod are provided with feed pathway, described valve body liquid-through hole leads to by this feed pathway and valve body snout cavity; Valve rod and controlling rod are also provided with drainage passage, and described valve body liquid-through hole leads to by drainage passage and valve body leakage opening.
In said structure, due to the O-ring seal that described seal ring is with pressurising chamber, described seal ring is arranged on valve body by side pressure lid, then should can realize filling pressure sealing function with the O-ring seal in pressurising chamber, and sealing circle be arranged on by side pressure lid can so that the fixing and working service of seal ring on valve body, again owing to being provided with the valve body liquid-through hole led to pressurising chamber on valve body, valve body is also provided with the valve body leakage opening led to valve outlet chamber, then described seal ring can by the valve body liquid-through hole on valve body for the pressurising medium entering pressurising chamber provides pressurizing channel, and the valve body leakage opening on valve body can provide drainage passage for the pressure liquid be filled with in seal ring pressurising chamber, again owing to being provided with rotating controlling rod in valve rod, valve rod and controlling rod are provided with feed pathway, described valve body liquid-through hole leads to by this feed pathway and valve body snout cavity, medium then in valve body snout cavity can be led to by feed pathway and pressurising chamber, thus the pressurising chamber pressurising utilizing pressure medium to be seal ring, the sealing effect of butterfly valve is guaranteed, and when the media operation pressure in snout cavity is larger, pressure in pressurising chamber is also higher, the sealing effect of butterfly valve is also better, be particularly suitable for butterfly valve and be used in service condition in elevated pressures pipeline, like this, butterfly valve of the present utility model carries out filling pressure sealing by the pressure in pipeline, no longer need configuring external pressure medium system, structure is simple, easy to use, feed pathway can by the rotation of controlling rod break-make easily, also owing to being also provided with drainage passage on valve rod and controlling rod, described valve body liquid-through hole leads to by drainage passage and valve body leakage opening, then when valve opened by needs, the pressure medium in pressurising chamber in seal ring can be released in drainage passage by controlling rod, make the release of pressurising chamber, between seal ring and flap, sealing pair contact reduces, be in micro-interference or there is a small amount of gap state, rotation valve rod just can open valve easily, the friction of sealing pair in valve opening and closing process all becomes very little with extruding, the working life of seal ring and valve all can be longer.
A kind of preferred implementation of the present utility model, the described seal ring cross section with pressurising chamber takes the shape of the letter U, and the opening of U-shaped is in seal ring outer ring, and the seal ring inner chamber of the annular in U-shaped cross section is pressurising chamber.Adopt this mode of execution, the ring structure in U-shaped cross section is simple, easily manufactured, and after pressurising, expansion effect is obvious, is conducive to improving sealing effect.
Another kind of preferred implementation of the present utility model, leave axial clearance between the side that described side pressure lid and valve body install seal ring, the side that valve body is installed seal ring is provided with the annular groove corresponding with seal ring respective side shape; Cover the side of installing seal ring in side pressure and be provided with the annular groove corresponding with seal ring respective side shape.Adopt this mode of execution, seal ring is effectively fixedly mounted, and after installing, the profile of seal ring can not change, and also can not change mounting point due to pressurising pressure, ensure that reliably carrying out of filling pressure sealing.
Another preferred implementation of the present utility model, position corresponding with described axial clearance on valve body is provided with annular ditch groove, and described valve body liquid-through hole is led to by this annular ditch groove and axial clearance and pressurising chamber.Adopt this mode of execution, realize 360 degree comprehensively to lead between pressurising chamber and valve body liquid-through hole by the axial clearance between side pressure lid and valve body and the annular ditch groove on valve body, structure is simple, and pressurising efficiency is high.
The further preferred implementation of the utility model, described valve body leakage opening is led to by the hole on the wall of side pressure lid and valve outlet chamber.Adopt this mode of execution, can be convenient to realize valve body leakage opening and valve outlet chamber is led to, easy to process.
Another further preferred implementation of the utility model, described feed pathway comprise be arranged on valve rod with the controlling rod inlet opening of the inlet opening that valve body snout cavity leads to, the valve rod liquid-through hole corresponding with valve body liquid-through hole position and the be communicated with inlet opening be arranged on controlling rod and valve rod liquid-through hole.Adopt this mode of execution, feed pathway is combined by the hole on valve rod and controlling rod and forms, and realizes the break-make of feed pathway by rotation control rod easily, is convenient to pressurising and controls.
The another further preferred implementation of the utility model, described drainage passage comprises valve rod liquid-through hole, be arranged at the controlling rod leakage opening of the valve rod leakage opening corresponding with valve body leakage opening position on valve rod and the be communicated with valve rod liquid-through hole be arranged on controlling rod and valve rod leakage opening.Adopt this mode of execution, valve rod liquid-through hole has feed liquor and drainage function concurrently, make seal ring pressurising and release transfer process valve rod without the need to action, only can realize the pressurising of seal ring by controlling rod and release is changed, meet the concerns mandate of flap opening-closing process and sealing pair sealing load.
The utility model is preferred implementation further, is provided with some Sealings between valve body and valve rod and between valve rod and controlling rod.Adopt this mode of execution, suitably can reduce the accuracy of manufacturing requirement that valve body and valve rod, valve rod and controlling rod cooperatively interact, ensure feed liquor and do not lead to mutually between drainage process feed pathway and drainage passage, the normal realization of valve filling pressure sealing function.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail from filling pressure sealing butterfly valve.
Fig. 1 is the structural representation of the utility model from a kind of embodiment of filling pressure sealing butterfly valve;
When Fig. 2 is flap closed condition in structure shown in Fig. 1 sealing and controlling rod position pressurising state under enlarged diagram;
Fig. 3 is the drawing in side sectional elevation at inlet opening position on controlling rod and valve rod in structure shown in Fig. 2;
When Fig. 4 is flap closed condition in structure shown in Fig. 1 sealing and controlling rod position depressurization phase under enlarged diagram;
Fig. 5 is the drawing in side sectional elevation at controlling rod and valve rod upper valve rod liquid-through hole position in structure shown in Fig. 4;
The enlarged diagram at sealing and controlling rod position when Fig. 6 is flap open mode in structure shown in Fig. 1.
In figure: 1-valve body, 2-controlling rod, 3-seal ring, 4-flap, 5-valve rod, 6-valve body snout cavity, 7-valve outlet chamber, 8-side pressure lid, 9-Sealing, 10-controlling rod inlet opening, 11-inlet opening, 12-valve rod leakage opening, 13-valve body leakage opening, 14-valve rod liquid-through hole, 15-valve body liquid-through hole, 16-annular ditch groove, 17-axial clearance, 18-pressurising chamber, 19-controlling rod leakage opening.
Embodiment
Shown in Fig. 1 in filling pressure sealing butterfly valve, valve body 1 is cast form part, the right chamber of valve body 1 is valve body snout cavity 6, valve body snout cavity 6 is led to by the flange in aperture and water influent pipeline, the left chamber of valve body 1 is valve outlet chamber 7, valve outlet chamber 7 is led to by the flange in aperture and fluid pipeline, in the middle part of valve body 1, through valve body wall on the upside of valve body 1, valve rod 5 is installed, valve rod 5 rotatable support is on the valve body wall up and down of valve body 1, valve rod 5 is driven by handwheel by the worm-and-wheel gear of valve body 1 outside, valve body 5 is fixedly connected with flap 4, flap 4 is in the form of annular discs, flap 4 rotates with valve rod 5 and makes valve opening and closing, when flap 4 is in closed condition, sealing surface on flap 4 and seal ring 3 form sealing pair and make valve airtight, seal ring 3 is arranged on valve body 1 by the side pressure lid 8 be installed in valve outlet chamber 7.
As shown in Figure 2, seal ring 3 is the O-ring seal with pressurising chamber 18, and its cross section takes the shape of the letter U, and the opening of U-shaped is in seal ring 3 outer ring, and seal ring 3 inner chamber of the annular in U-shaped cross section is pressurising chamber 18; The side that valve body 1 is installed seal ring 3 is provided with the annular groove corresponding with seal ring 3 respective side shape, the side that side pressure lid 8 is installed seal ring 3 is provided with the annular groove corresponding with seal ring 3 respective side shape, leave axial clearance 17 between the side of side pressure lid 8 and valve body 1 being installed seal ring 3, this axial clearance 17 is corresponding with the pressurising chamber 18 of seal ring 3 leads to.Position corresponding with described axial clearance 17 on valve body 1 is provided with annular ditch groove 16, and valve body 1 is provided with valve body liquid-through hole 15, and valve body liquid-through hole 15 is led to pressurising chamber 18 by annular ditch groove 16 and axial clearance 17.Valve body 1 is also provided with valve body leakage opening 13, and valve body leakage opening 13 is in the below of valve body liquid-through hole 15, and valve body leakage opening 13 is led to by the hole on the wall of side pressure lid 8 and valve outlet chamber 7.
Rotating controlling rod 2 is provided with in inside, valve rod 5 lower end, controlling rod 2 lower end is through the valve body wall on the downside of valve body 1, controlling rod 2 lower end is the operation connecting end of controlling rod 2, drived control bar 2 can be carried out from valve body 1 outside by spanner to rotate, controlling rod 2 can certainly be rotated by pneumatic, hydraulic pressure or electric driving mechanism.Valve rod 5 and controlling rod 2 are provided with feed pathway, this feed pathway comprises the inlet opening 11 led to valve body snout cavity 7 be arranged on valve rod 5, the valve rod liquid-through hole 14 corresponding with valve body liquid-through hole 15 position and the controlling rod inlet opening 10 of the be communicated with inlet opening 11 be arranged on controlling rod 2 with valve rod liquid-through hole 14, like this, valve body liquid-through hole 15 just can be led to by this feed pathway and valve body snout cavity 6, correspondingly, pressurising chamber 18 in seal ring 3 just can be led to valve body snout cavity 6, thus utilize fluid pressure in valve body snout cavity 6 voluntarily to pressurising chamber 18 pressurising, butterfly valve is made to obtain good sealing effect.When valve is in the closed position between flap 4 and seal ring 3 at the position relationship of pressurising state lower valve rod 5 and controlling rod 2 as shown in Figure 2 and Figure 3, wherein Fig. 3 is controlling rod 2 and the schematic cross section of valve rod 5 at inlet opening 11 position.
As shown in Figure 4, valve rod 5 and controlling rod 2 are also provided with drainage passage, this drainage passage comprises valve rod liquid-through hole 14, be arranged at the valve rod leakage opening 12 corresponding with valve body leakage opening 13 position on valve rod 5 and the controlling rod leakage opening 19 of the be communicated with valve rod liquid-through hole 14 be arranged on controlling rod 2 with valve rod leakage opening 12, controlling rod leakage opening 19 is circumferentially misplacing 90 degree with the position of controlling rod inlet opening 10, like this, after making controlling rod 2 rotate 90 degree, valve body liquid-through hole 15 just can be led to valve outlet chamber 7 by the drainage passage on valve rod 5 and controlling rod 2 and valve body leakage opening 13, thus make pressurising chamber 18 release, seal ring 3 after release and between flap 4 sealing pair contact reduce, be in micro-interference or there is a small amount of gap state, rotation valve rod 5 just can open valve easily again.When valve is in the closed position between flap 4 and seal ring 3 at the position relationship of depressurization phase lower valve rod 5 and controlling rod 2 as shown in figs. 4 and 5, wherein Fig. 5 is controlling rod 2 and the schematic cross section of valve rod 5 at valve rod liquid-through hole 14 position.
Fig. 6 show valve in an open position time flap 4 and seal ring 3 between and position relationship between valve rod 5 and controlling rod 2.Valve is 90 degree from flap 4 closed condition to open mode hard-over, when flap 4 turn an angle under the drive of valve rod 5 be in open mode time, valve body liquid-through hole 15 and be in closed state between valve body leakage opening 13 and valve rod 5, in flap 4 opening procedure, controlling rod 2 rotates with valve rod 5, and the relative position between controlling rod 2 and valve rod 5 remains unchanged.
Some Sealings 9 are provided with between valve body 1 and valve rod 5 and between valve rod 5 and controlling rod 2, the accuracy of manufacturing requirement suitably can reduce valve body 1 and valve rod 5 like this, cooperatively interacting between valve rod 5 and controlling rod 2, ensures feed liquor and does not lead to mutually between drainage process feed pathway and drainage passage.
Below only list embodiments more of the present utility model, but the utility model is not limited in this, more improvement and conversion can also be made.As described in the cross section of seal ring 3 may not be and take the shape of the letter U, but can be other shape, as long as suitable sealing pair can be formed with the sealing surface of flap 4 with pressurising chamber 18; Described controlling rod leakage opening 19 circumferentially may not be dislocation 90 degree with the position of controlling rod inlet opening 10, but can misplace 120 degree or other angle; Positioning means can also be set between described controlling rod 2 and valve rod 5 or the position setting position on valve body 1 near controlling rod 2 marks, so that control operation.And so on, as long as improvement done on the utility model basic principle basis and conversion, all should be considered as falling in protection domain of the present utility model.
Claims (8)
1. one kind from filling pressure sealing butterfly valve, comprise valve body (1), valve rod (5), flap (4) and the seal ring (3) of sealing pair can be formed with flap (4), it is characterized in that: described seal ring (3) is the O-ring seal with pressurising chamber (18), and described seal ring (3) is arranged on valve body (1) by side pressure lid (8); Valve body (1) is provided with the valve body liquid-through hole (15) led to pressurising chamber (18), valve body (1) is also provided with the valve body leakage opening (13) led to valve outlet chamber (7); In valve rod (5), be provided with rotating controlling rod (2), valve rod (5) and controlling rod (2) are provided with feed pathway, described valve body liquid-through hole (15) is led to by this feed pathway and valve body snout cavity (6); Valve rod (5) and controlling rod (2) are also provided with drainage passage, and described valve body liquid-through hole (15) is led to by drainage passage and valve body leakage opening (13).
2. according to claim 1 from filling pressure sealing butterfly valve, it is characterized in that: the described seal ring with pressurising chamber (18) (3) cross section takes the shape of the letter U, the opening of U-shaped is in seal ring (3) outer ring, and seal ring (3) inner chamber of the annular in U-shaped cross section is pressurising chamber (18).
3. according to claim 1 from filling pressure sealing butterfly valve, it is characterized in that: leave axial clearance (17) between the side of installing seal ring (3) on described side pressure lid (8) and valve body (1), the side that valve body (1) is installed seal ring (3) is provided with the annular groove corresponding with seal ring (3) respective side shape; The side that side pressure lid (8) is installed seal ring (3) is provided with the annular groove corresponding with seal ring (3) respective side shape.
4. according to claim 1 from filling pressure sealing butterfly valve, it is characterized in that: the upper position corresponding with described axial clearance (17) of valve body (1) is provided with annular ditch groove (16), and described valve body liquid-through hole (15) is led to pressurising chamber (18) by this annular ditch groove (16) and axial clearance (17).
5. according to claim 1 from filling pressure sealing butterfly valve, it is characterized in that: described valve body leakage opening (13) is led to by the hole on the wall of side pressure lid (8) and valve outlet chamber (7).
6. according to claim 1 from filling pressure sealing butterfly valve, it is characterized in that: described feed pathway comprise be arranged on valve rod (5) with the controlling rod inlet opening (10) of the inlet opening (11) that valve body snout cavity (7) leads to, the valve rod liquid-through hole (14) corresponding with valve body liquid-through hole (15) position and the be communicated with inlet opening (11) be arranged on controlling rod (2) and valve rod liquid-through hole (14).
7. according to claim 1 from filling pressure sealing butterfly valve, it is characterized in that: described drainage passage comprises valve rod liquid-through hole (14), be arranged at the controlling rod leakage opening (19) of the valve rod leakage opening (12) corresponding with valve body leakage opening (13) position on valve rod (5) and the be communicated with valve rod liquid-through hole (14) be arranged on controlling rod (2) and valve rod leakage opening (12).
8. according to claim 1 from filling pressure sealing butterfly valve, it is characterized in that: between valve body (1) and valve rod (5) and between valve rod (5) and controlling rod (2), be provided with some Sealings (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520716506.2U CN204922041U (en) | 2015-09-17 | 2015-09-17 | From pressurizing sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520716506.2U CN204922041U (en) | 2015-09-17 | 2015-09-17 | From pressurizing sealed butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204922041U true CN204922041U (en) | 2015-12-30 |
Family
ID=54971170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520716506.2U Withdrawn - After Issue CN204922041U (en) | 2015-09-17 | 2015-09-17 | From pressurizing sealed butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204922041U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090538A (en) * | 2015-09-17 | 2015-11-25 | 东台市远洋船舶配件有限公司 | Automatic-pressurizing seal butterfly valve |
-
2015
- 2015-09-17 CN CN201520716506.2U patent/CN204922041U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090538A (en) * | 2015-09-17 | 2015-11-25 | 东台市远洋船舶配件有限公司 | Automatic-pressurizing seal butterfly valve |
| CN105090538B (en) * | 2015-09-17 | 2016-08-24 | 东台市远洋船舶配件有限公司 | From filling pressure sealing butterfly valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203115113U (en) | Novel sealing stop valve | |
| CN205937999U (en) | Novel swing check valve | |
| CN206682326U (en) | A kind of pipeline valve device | |
| CN204922041U (en) | From pressurizing sealed butterfly valve | |
| CN204127333U (en) | With the substep open-close type butterfly valve of guide's pressure release | |
| CN105090538A (en) | Automatic-pressurizing seal butterfly valve | |
| CN204900909U (en) | Novel plug valve | |
| CN104180055A (en) | Pilot control gate valve | |
| CN202708093U (en) | Marine stop valve | |
| CN202992224U (en) | Ceramic valve core water faucet | |
| CN208793706U (en) | A kind of lining fire safe type high temperature tee joint butterfly valve | |
| CN202937444U (en) | Novel water pump control valve | |
| CN203796984U (en) | Novel-structure high-pressure Y-shaped balance valve | |
| CN219388661U (en) | Hard sealing gate valve | |
| CN111412308A (en) | Four-way ball valve | |
| CN202392167U (en) | Integrated water mixing faucet | |
| CN219102126U (en) | Three-way valve and working piece | |
| CN2649882Y (en) | Dual-arc-piece sluice valve | |
| CN204985774U (en) | Right -angle type motorised valve based on guide's structure | |
| CN210164898U (en) | Stop valve for high-pressure regulation by using bevel gear | |
| CN203549012U (en) | Slowly-closing type check valve | |
| CN203641627U (en) | Electric blow-off valve | |
| CN202580066U (en) | Quick change type single-seat control valve | |
| CN220581785U (en) | Integrated casting of ball valve body | |
| CN113531169B (en) | Intelligent bidirectional filtering throttling ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151230 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |