CN204127333U - With the substep open-close type butterfly valve of guide's pressure release - Google Patents
With the substep open-close type butterfly valve of guide's pressure release Download PDFInfo
- Publication number
- CN204127333U CN204127333U CN201420548170.9U CN201420548170U CN204127333U CN 204127333 U CN204127333 U CN 204127333U CN 201420548170 U CN201420548170 U CN 201420548170U CN 204127333 U CN204127333 U CN 204127333U
- Authority
- CN
- China
- Prior art keywords
- valve
- rotating shaft
- pressure release
- guide
- valve disc
- 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.)
- Active
Links
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a kind of substep open-close type butterfly valve with guide's pressure release, the valve rod comprising valve body, valve disc and be connected with valve body rotatable sealing, valve body and valve disc are provided with along valve opening axial direction sealing surface bonded to each other; Described valve rod lower end is provided with joint tongue, and this joint tongue is axially flexibly connected along valve disc with a joggle groove on valve disc; Described valve rod is hollow structure, and in valve rod, stuffing box gland is equipped with rotating shaft rotationally, this rotating shaft is provided with the eccentric wheel that throw of eccentric is 2-6 millimeter, and rotating shaft is flexibly connected along valve disc radial direction with the rotating shaft joggle groove on valve disc by eccentric wheel, rotating shaft joggle block; Valve disc is also provided with guide's relief hole, and guide's relief hole is opened and closed through drive sleeve and pressure release port lid by pressure release handwheel.Can not only should pass through valve disc opening/shutting valve with substep open-close type butterfly valve of guide's pressure release, and in valve disc rotation process, sealing pair is without extruding, sealing is reliable, is convenient to keep in repair, and valve opening resistance little, operate light.
Description
Technical field
The utility model relates to a kind of valve, particularly relates to a kind of butterfly valve.
Background technique
Butterfly valve is one of a kind of valve be most widely used, it utilizes the open and close being reached valve by the circular valve plate of valve rod driven rotary, when throttle down, valve rod drives valve disc to rotate, make the sealing surface on valve disc edge progressively close with the sealing surface on valve body valve opening hole wall, be squeezed until valve disc and valve opening axes normal between the two, elastic member between the two forms interference fit and makes valve obtain hermetically closing.
Although the application of butterfly valve widely, but because it needs to utilize the interference fit of elastic member between the sealing surface on the sealing surface on valve disc edge and valve body valve opening hole wall to realize closedown and the sealing of valve, then need to overcome elastic deformation force when elastic member between the sealing surface on valve disc edge and the sealing surface on valve body valve opening hole wall forms interference fit opening and closing operating process, therefore operational torque is larger; And the sealing surface on valve disc edge and between the sealing surface on valve body valve opening hole wall, elastic member forms interference fit time the extruding that produces inevitably produce with friction and make it produce the phenomenon such as mechanical wear and scratch; After valve disc sealing surface extruding valve body sealing surface, elastic member can produce permanent plastic deformation; Described elastic member also can lose efficacy because of material ageing, and due to the elastic member between valve disc cylindrical sealing surface or valve body sealing surface be mostly be overall structure with valve disc or valve body, substantially can not maintain and replace after it produces the defect such as scratch, distortion, thus cause the entirety of valve to scrap.In addition, due to the pressure effect of valve liquid feeding side flowing medium, valve is very large at unlatching initial stage resistance, and often need very large open operation moment just can open valve, very easily cause the damage of associated components, this is also the one of the main reasons causing butterfly valve fault.
Model utility content
For the above-mentioned deficiency existing for prior art, technical problem to be solved in the utility model is to provide a kind of butterfly valve, and it can not only pass through valve disc opening/shutting valve, and in valve disc rotation process sealing pair without extruding, sealing is reliable, is convenient to maintenance, and valve opening resistance little, operate light.
In order to solve the problems of the technologies described above, a kind of substep open-close type butterfly valve with guide's pressure release of the present utility model, the valve rod comprising valve body, valve disc and be connected with valve body rotatable sealing, valve body and valve disc is provided with along valve opening axial direction sealing surface bonded to each other; Be provided with rotating shaft at the valve disc back side and connect bearing, rotating shaft connection bearing has rotating shaft joggle groove, connects bearing both sides in rotating shaft and be respectively arranged with connection bearing, connect on bearing and have joggle groove, described valve rod lower end is provided with joint tongue, and this joint tongue is axially flexibly connected along valve disc with a joggle groove; Described valve rod is hollow structure, in valve rod, stuffing box gland is equipped with rotating shaft rotationally, and this rotating shaft is provided with eccentric wheel, and eccentric throw of eccentric is 2-6 millimeter, eccentric wheel is socketed with rotationally rotating shaft joggle block, rotating shaft joggle block is flexibly connected along valve disc radial direction with rotating shaft joggle groove; Valve body is gone back rotatable sealing and is connected with drive sleeve, this drive sleeve is through valve body, and drive sleeve upper end is socketed with joggle block, and joggle block is axially flexibly connected along valve disc with another joggle groove; Valve disc is also provided with guide's relief hole, and in guide's relief hole aperture, correspondence is provided with pressure release port lid, and pressure release port lid is connected by decompression cover arm and drive sleeve.
In said structure, owing to being provided with along valve opening axial direction sealing surface bonded to each other on valve body and valve disc, sealing surface then on valve disc is in the end face of valve disc, sealing surface on valve body in contrast, for the step surface in valve opening, like this, valve disc is not as usual butterfly valve, be used as sealing surface by the periphery of valve disc, thus in valve opening and closing process, also the elastic member that would not produce between valve disc sealing surface and valve body sealing surface is squeezed and then produces the phenomenon such as mechanical wear and scratch, bearing is connected again owing to being provided with rotating shaft at the valve disc back side, rotating shaft connection bearing has rotating shaft joggle groove, connect bearing both sides in rotating shaft and be respectively arranged with connection bearing, connect on bearing and have joggle groove, described valve rod lower end is provided with joint tongue, and this joint tongue is axially flexibly connected along valve disc with a joggle groove, described valve rod is hollow structure, in valve rod, stuffing box gland is equipped with rotating shaft rotationally, this rotating shaft is provided with eccentric wheel, eccentric throw of eccentric is 2-6 millimeter, eccentric wheel is socketed with rotationally rotating shaft joggle block, rotating shaft joggle block is flexibly connected along valve disc radial direction with rotating shaft joggle groove, then when valve rod rotates, valve rod can be rotated by joint tongue actuating valve coiling valve rod, and when rotating shaft, rotating shaft can by eccentric wheel and on rotating shaft joggle block on valve rod on joint tongue and valve disc joggle groove spacing and leading role under drive valve disc axially to produce movement along valve disc, like this, the opening-closing process of valve is decomposed into the rotation around valve rod center and the movement along valve disc axis, when needs throttle down, first rotate the position of valve disc to valve disc end face and valve body valve opening axes normal by valve rod, the position that namely valve disc is axially axially identical with valve body, now valve disc end face is relative with valve body sealing surface, but not gluing, sealing, but maintain certain distance, this distance depends on eccentric throw of eccentric, after this rotated by rotating shaft band movable eccentric wheel again, valve disc is moved along its axis and makes valve disc end face and valve body sealing surface be affixed merging press seal, valve is closed, after valve closing, eccentric wheel compresses valve disc, it is in dead center position, need eccentric wheel just can be made to rotate by external force, self-locking action is played to valve disc, ensure that the sealing effect after valve closing, when valve opened by needs, sequence of movement in contrast, the throw of eccentric of eccentric wheel 2-6 millimeter can produce the axial displacement of 4-12 millimeter, valve disc can be made not produce with the sealing surface of valve body in rotation process contact, thus ensure that the elastic member that can not produce between valve disc sealing surface and valve body sealing surface is squeezed and then produces the phenomenon such as mechanical wear and scratch in valve opening and closing process, just there is not larger resistance in the rotation process of valve disc yet, open easy and convenient, and employing end face seal, seal process is realized by moving axially of valve disc, sealing effect is quite reliable, Sealing is between valve body and the end face of valve disc, keep in repair also very convenient, also be connected with drive sleeve owing to going back rotatable sealing on valve body, this drive sleeve is through valve body, and drive sleeve upper end is socketed with joggle block, and joggle block is axially flexibly connected along valve disc with another joggle groove, valve disc is also provided with guide's relief hole, in guide's relief hole aperture, correspondence is provided with pressure release port lid, pressure release port lid is connected by decompression cover arm and drive sleeve, then by rotating drive sleeve, pressure release port lid can be driven to open or close guide's relief hole, thus guide's relief hole was opened in advance before valve opening, the fluid of valve inlet opening side is made to flow to liquid outlet opening side by guide's relief hole, the fluid medium pressure of inlet opening side is discharged, thus alleviate the active force of fluid medium pressure to valve disc, make valve to open resistance little, open operation can be realized more easily, and the joggle block of drive sleeve upper end socket can play spacing and leading role to moving axially of valve disc equally with the joggle groove on valve disc, the course of action of valve disc can be more stable.
A kind of preferred implementation of the present utility model, described body cavity is step hole, and its step surface is the sealing surface of valve body, and sealing face is provided with seal ring.Adopt this mode of execution, valve body is formed with valve disc along valve opening axial direction sealing surface bonded to each other by step surface, and sealing when ensureing valve closing by the seal ring on it, its structure is simple, and without seal ring on valve disc, its sealing surface is bright and clean, and flow resistance is little.
Another preferred implementation of the present utility model, is fixed with Sealing in described body cavity side by trim ring, and the side of Sealing is the sealing surface of valve body.Adopt this mode of execution, the step surface on the body cavity formed by trim ring installation Sealing, as valve body sealing surface, manufacture simple like this, and Sealing I&M is changed all very convenient.
Another kind of preferred implementation of the present utility model, described eccentric wheel is socketed with rotating shaft joggle block rotationally by bearing.Adopt this mode of execution, rotate between eccentric wheel and rotating shaft joggle block flexibly, resistance to motion is little.
The further preferred implementation of the utility model, described rotating shaft lower end seals rotationally and is bearing in drive sleeve.Adopt this mode of execution, rotating shaft is all supported at upper and lower two ends, and it connects good rigidly.
The another further preferred implementation of the utility model, described drive sleeve lower end and pressure release handwheel are connected.Adopt this mode of execution, can drive drive sleeve that pressure release port lid is opened and closedown conveniently by pressure release handwheel, realize guide's decompression function.
Another further preferred implementation of the utility model, described valve rod and valve rod driving device are connected, and described rotating shaft and rotating shaft drive unit are connected.Adopt this mode of execution, valve opening and closing course of action is driven by two drive units respectively, and structure is simple.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the substep open-close type butterfly valve with guide's pressure release of the present utility model is described in further detail.
Fig. 1 is the structural representation of the utility model with a kind of embodiment of substep open-close type butterfly valve of guide's pressure release;
Fig. 2 is the sectional view of structure shown in Fig. 1;
Fig. 3 is the partial sectional view connecting bearing and valve rod connection part in structure shown in Fig. 1;
Fig. 4 is the partial sectional view that the shaft of structure shown in Fig. 1 connects bearing and rotating shaft connection part;
Fig. 5 is the partial sectional view of decompression cover arm position in structure shown in Fig. 1;
Fig. 6 is the structural representation of another mode of execution of sealing surface between valve body and valve disc in structure shown in Fig. 2.
In figure: 1-rotating shaft drive unit, 2-valve rod driving device, 3-valve body, 4-valve rod, 5-connect bearing, 6-valve disc, 7-rotating shaft, 8-eccentric wheel, 9-rotating shaft connection bearing, 10-decompression cover arm, 11-drive sleeve, 12-pressure release handwheel, 13-joint tongue, 14-rotating shaft joggle block, 15-joggle block, 16-joggle groove, 17-rotating shaft joggle groove, 18-guide's relief hole, 19-pressure release port lid, 20-trim ring, 21-Sealing.
Embodiment
Shown in Fig. 1 to Fig. 5 with in the substep open-close type butterfly valve of guide's pressure release, valve body 3 is the basic part of butterfly valve, its inner chamber is step hole, the step surface of step hole forms the sealing surface of valve body 3, the sealing surface of valve disc 6 is the end face of valve disc 6, and valve body 3 is bonded to each other along valve opening axial direction with the sealing surface of valve disc 6, and valve body 3 can be the plane vertical with valve body valve opening with the sealing surface of valve disc 6, also can be a conical surface, valve body 3 sealing surface is provided with seal ring, in the middle part of valve disc 6 back side, be provided with rotating shaft connect bearing 9, rotating shaft connection bearing 9 has rotating shaft joggle groove 17, rotating shaft joggle groove 17 is rectangular slot, its long limit is positioned at valve disc 6 diametric(al), connect bearing 9 both sides in rotating shaft and be respectively arranged with connection bearing 5, connect on bearing 5 and have joggle groove 16, joggle groove 16 is rectangular slot, and its long limit is positioned at valve disc 6 axial direction, the wall of valve body 3 has through hole, this through hole runs through whole valve body 3 from top to bottom, valve rod 4 is connected in upper-end part of driving through hole that valve body 3 is opened by packing seal rotatable sealing through valve body 3, described valve rod 4 lower end is provided with joint tongue 13, joint tongue 13 is in square, the length of side nominal size of joint tongue 13 is equal with joggle groove 16 bond length nominal size, this joint tongue 13 is axially flexibly connected along valve disc 6 with a joggle groove 16 above valve disc 6, described valve rod 4 is hollow structure, in valve rod 4, stuffing box gland is equipped with rotating shaft 7 rotationally, its sealing can be realized by simple seal ring, this rotating shaft 7 is provided with eccentric wheel 8, the throw of eccentric of eccentric wheel 8 is 2-6 millimeter, eccentric wheel 8 is socketed with rotationally rotating shaft joggle block 14, rotating shaft joggle block 14 is square, the length of side nominal size of rotating shaft joggle block 14 is equal with rotating shaft joggle groove 17 bond length nominal size, rotating shaft joggle block 14 is flexibly connected along valve disc 6 radial direction with rotating shaft joggle groove 17, rotating shaft 7 upper end extrusion is greater than the extrusion of valve rod 4 upper end, rotating shaft 7 is connected with rotating shaft drive unit 1, valve rod 4 is connected with valve rod driving device and 2 is connected, the drive unit of rotating shaft shown in figure 1 is handwheel, valve rod driving device 2 is handle, certainly, rotating shaft drive unit 1 also can be the drive unit of handle or other form, valve rod driving device 2 also can be the drive unit of handwheel or other form, rotating shaft drive unit 1 and valve rod driving device 2 also can arrange positioning means as collision bead or latch and so at circumferencial direction, so that simplify the keying operation of valve, valve body 3 is also connected with drive sleeve 11 by filler rotatable sealing, this drive sleeve 11 is through the lower end part through hole that valve body 3 is opened, drive sleeve 11 upper end is socketed with joggle block 15, joggle block 15 is in square, the length of side nominal size of joggle block 15 is equal with joggle groove 16 bond length nominal size, joggle block 15 is axially flexibly connected along valve disc 6 with another joggle groove 16 of valve disc 6 upper and lower, valve disc 6 is also provided with guide's relief hole 18, boss is provided with in guide's relief hole 18 aperture at valve disc 6 back side, this boss plane is the sealing surface of guide's relief hole 18 and pressure release port lid 19, pressure release port lid 19 to be connected on decompression cover arm 10 and to be connected by decompression cover arm 10 and drive sleeve 11, described drive sleeve 11 lower end and pressure release handwheel 12 are connected, drive sleeve 11 lower end is sealing configuration, described rotating shaft 7 lower end seals rotationally and is bearing in drive sleeve 11.
Fig. 6 shows the structural representation of another mode of execution of sealing surface between valve body 3 and valve disc 6, and be fixed with Sealing 21 in described valve body 3 inner chamber side by trim ring 20, between Sealing 21 with trim ring 20, cutting ferrule is connected, and the side of Sealing 21 is the sealing surface of valve body 3.
In working procedure, the keying of valve can be realized easily by rotating shaft drive unit 1 and valve rod driving device 2, when needs throttle down, first rotation valve rod drive unit 2 is with ovable valve stem 4 to rotate, the joint tongue 13 of valve rod 4 lower end is made to drive valve disc 6 to rotate, valve disc 6 sealing surface turns to the position relative with valve body 3 sealing surface, valve disc 6 sealing surface and valve body 3 sealing surface keep a segment distance, contact without any with valve body 3 sealing surface in valve disc 6 rotation process, rotation process easy and flexible, and then rotating shaft drive unit 1, by rotating shaft 7, eccentric wheel 8, rotating shaft joggle block 14 drives valve disc 6 to move axially along valve disc 6, make valve disc 6 sealing surface and valve body 3 sealing surface close to each other gradually until fit and seal, valve is closed, now eccentric wheel 8 compresses valve disc 6 and is in dead center position, maintain the closed condition of valve.When valve opened by needs, successively rotate backward rotating shaft drive unit 1 and valve rod driving device 2, contrary with during throttle down, valve disc 6 first moves axially to be made valve disc 6 sealing surface and valve body 3 sealing surface depart to seal, rotate around valve rod 4 again valve is opened completely.
Be arranged at pressure release handwheel 12 below valve in order to realize the keying of guide's relief hole 18, when valve opened by needs, pressure release handwheel 12 can be rotated in advance, pressure release port lid 19 is driven to rotate to open guide's relief hole 18 by drive sleeve 11, joggle block 15, decompression cover arm 10, the hydrodynamic pressure at valve inlet place is reduced pressure, thus valve can be opened more like a cork, rotate pressure release handwheel 12 during valve closing and guide's relief hole 18 is closed, to ensure the sealing completely of valve.
Below preferred implementations more of the present utility model are only listed, but the utility model is not limited in this, more improvement and conversion can also be made, as as described in eccentric wheel 8 can also be socketed with rotating shaft joggle block 14 rotationally by bearing, more light and flexible when making rotating shaft 7 drive valve disc 6 to move; Described drive sleeve 11 may not be and is connected with pressure release handwheel 12, but is connected with handle or other drive unit; Described joint tongue 13, rotating shaft joggle block 14, joggle block 15 may not be in square, but be rectangle, as long as joint tongue 13 and keep the axis along valve disc 6 to be flexibly connected between joggle block 15 with joggle groove 16 and rotating shaft joggle block 14 keeps being flexibly connected along valve disc 6 radial direction with rotating shaft joggle groove 17.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. the substep open-close type butterfly valve with guide's pressure release, the valve rod (4) comprising valve body (3), valve disc (6) and be connected with valve body (3) rotatable sealing, is characterized in that: be provided with on valve body (3) and valve disc (6) along valve opening axial direction sealing surface bonded to each other; Be provided with rotating shaft at valve disc (6) back side and connect bearing (9), rotating shaft connection bearing (9) has rotating shaft joggle groove (17), connect bearing (9) both sides in rotating shaft and be respectively arranged with connection bearing (5), connect on bearing (5) and have joggle groove (16), described valve rod (4) lower end is provided with joint tongue (13), and this joint tongue (13) is axially flexibly connected along valve disc (6) with a joggle groove (16); Described valve rod (4) is hollow structure, in valve rod (4), stuffing box gland is equipped with rotating shaft (7) rotationally, this rotating shaft (7) is provided with eccentric wheel (8), the throw of eccentric of eccentric wheel (8) is 2-6 millimeter, eccentric wheel (8) is socketed with rotationally rotating shaft joggle block (14), rotating shaft joggle block (14) is flexibly connected along valve disc (6) radial direction with rotating shaft joggle groove (17); Valve body (3) is gone back rotatable sealing and is connected with drive sleeve (11), this drive sleeve (11) is through valve body (3), drive sleeve (11) upper end is socketed with joggle block (15), and joggle block (15) is axially flexibly connected along valve disc (6) with another joggle groove (16); Valve disc (6) is also provided with guide's relief hole (18), and in guide's relief hole (18) aperture, correspondence is provided with pressure release port lid (19), and pressure release port lid (19) is connected by decompression cover arm (10) and drive sleeve (11).
2. the substep open-close type butterfly valve with guide's pressure release according to claim 1, it is characterized in that: described valve body (3) inner chamber is step hole, its step surface is the sealing surface of valve body (3), and sealing face is provided with seal ring.
3. the substep open-close type butterfly valve with guide's pressure release according to claim 1, is characterized in that: be fixed with Sealing (21) in described valve body (3) inner chamber side by trim ring (20), the side of Sealing (21) is the sealing surface of valve body (3).
4. the substep open-close type butterfly valve with guide's pressure release according to claim 1, is characterized in that: described eccentric wheel (8) is socketed with rotating shaft joggle block (14) rotationally by bearing.
5. the substep open-close type butterfly valve with guide's pressure release according to claim 1, is characterized in that: described rotating shaft (7) lower end seals rotationally and is bearing in drive sleeve (11).
6. the substep open-close type butterfly valve with guide's pressure release according to claim 1, is characterized in that: described drive sleeve (11) lower end and pressure release handwheel (12) are connected.
7. the substep open-close type butterfly valve with guide's pressure release according to claim 1, is characterized in that: described valve rod (4) and valve rod driving device (2) are connected, and described rotating shaft (7) and rotating shaft drive unit (1) are connected.
8. the substep open-close type butterfly valve with guide's pressure release according to claim 7, is characterized in that: described valve rod driving device (2) and rotating shaft drive unit (1) are handle or handwheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420548170.9U CN204127333U (en) | 2014-09-24 | 2014-09-24 | With the substep open-close type butterfly valve of guide's pressure release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420548170.9U CN204127333U (en) | 2014-09-24 | 2014-09-24 | With the substep open-close type butterfly valve of guide's pressure release |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204127333U true CN204127333U (en) | 2015-01-28 |
Family
ID=52383691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420548170.9U Active CN204127333U (en) | 2014-09-24 | 2014-09-24 | With the substep open-close type butterfly valve of guide's pressure release |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204127333U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173987A (en) * | 2020-02-04 | 2020-05-19 | 邵立坤 | Pre-decompression butterfly valve |
| CN111173986A (en) * | 2020-01-20 | 2020-05-19 | 邵延荣 | Pre-decompression butterfly valve |
| CN111197665A (en) * | 2020-01-13 | 2020-05-26 | 许春俤 | Large valve of non-rising stem linkage pilot diaphragm based on fluid water scale self-checking |
| CN111396573A (en) * | 2020-03-26 | 2020-07-10 | 邵延荣 | Butterfly valve |
-
2014
- 2014-09-24 CN CN201420548170.9U patent/CN204127333U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197665A (en) * | 2020-01-13 | 2020-05-26 | 许春俤 | Large valve of non-rising stem linkage pilot diaphragm based on fluid water scale self-checking |
| CN111173986A (en) * | 2020-01-20 | 2020-05-19 | 邵延荣 | Pre-decompression butterfly valve |
| CN111173986B (en) * | 2020-01-20 | 2021-07-27 | 良工阀门集团有限公司 | Pre-decompression butterfly valve |
| CN111173987A (en) * | 2020-02-04 | 2020-05-19 | 邵立坤 | Pre-decompression butterfly valve |
| CN111173987B (en) * | 2020-02-04 | 2021-07-23 | 泉瓦特斯阀门有限公司 | Pre-decompression butterfly valve |
| CN111396573A (en) * | 2020-03-26 | 2020-07-10 | 邵延荣 | Butterfly valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204099618U (en) | Butterfly valve | |
| CN204127333U (en) | With the substep open-close type butterfly valve of guide's pressure release | |
| EP3406947B1 (en) | Valve | |
| CN204459195U (en) | The hard seal butterfly valve that a kind of Double-clack is board-like | |
| CN105221768A (en) | A kind of double rocking lever is without friction hard-sealing butterfly valve | |
| CN103410995A (en) | Parallel double gate disc swing gate valve | |
| CN204239771U (en) | A kind of linkage type butterfly valve | |
| CN204127334U (en) | Substep open-close type butterfly valve | |
| CN210003853U (en) | double-gate ceramic wear-resistant gate valve | |
| CN211202894U (en) | Multi-standard type vulcanization butt-clamping butterfly valve | |
| CN204784789U (en) | There is not umbrella tooth transmission soft seal gate valve that card hinders | |
| CN204900909U (en) | Novel plug valve | |
| CN208185525U (en) | A kind of combination valve | |
| CN107061751A (en) | A kind of band rotary drag stop valve assembly method | |
| CN108775414B (en) | Antifriction ball valve | |
| CN205618790U (en) | Butterfly valve | |
| CN104613183A (en) | High-pressure butterfly valve | |
| CN205806596U (en) | Paint high-pressure filteration safety relief valve | |
| CN109139944A (en) | A kind of novel movable flap of shut-off valve | |
| CN105221767B (en) | A kind of Zero-friction hard-sealing butterfly valve | |
| CN111412308A (en) | Four-way ball valve | |
| CN204477328U (en) | A kind of high pressure butterfly valve | |
| CN207848433U (en) | A kind of double eccentric flexible sealing butterfly valves of flange form | |
| CN202302031U (en) | Hand-switching valve | |
| CN206874935U (en) | Pneumatic single-action double-flashboard gate valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |