CN213871157U - Plate ring surrounding belt type double-seal water inlet butterfly valve - Google Patents
Plate ring surrounding belt type double-seal water inlet butterfly valve Download PDFInfo
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- CN213871157U CN213871157U CN202022177253.XU CN202022177253U CN213871157U CN 213871157 U CN213871157 U CN 213871157U CN 202022177253 U CN202022177253 U CN 202022177253U CN 213871157 U CN213871157 U CN 213871157U
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Abstract
The utility model discloses a plate-ring surrounding-belt type double-sealing water inlet butterfly valve, which relates to the technical field of butterfly valves and comprises a valve body, wherein a shaft hole of the valve body is internally provided with a valve shaft, the valve shaft is connected with a double-flat-plate butterfly plate, the valve shaft is also externally connected with a driving rod, a water inlet end of the valve body and one side flat plate of the double-flat-plate butterfly plate are provided with an overhaul sealing pair, and a water outlet end of the valve body and the other side flat plate of the double-flat-plate butterfly plate are provided with a working sealing pair; the maintenance sealing pair comprises a valve body maintenance sealing ring arranged on the inner wall of the water inlet end of the valve body, an inflatable butterfly plate maintenance sealing ring is arranged on the double-flat butterfly plate corresponding to the valve body maintenance sealing ring, the double-flat butterfly plate is connected with a first sealing gland through a first adjusting screw, and the butterfly plate maintenance sealing ring is pressed on the double-flat butterfly plate through the first sealing gland; the utility model has the advantages of the controllability has both avoided movable's piston to overhaul sealed maintenance difficulty, and easy operation, convenience when overhauing the valve have economical and practical simultaneously.
Description
Technical Field
The utility model relates to a technical field of butterfly valve, in particular to plate circle surrounding belt type double containment butterfly valve of intaking.
Background
The butterfly valve is also called as a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which has a closing member (a valve clack or a butterfly plate) as a disk and can rotate around a valve shaft to open and close; the valve can be used for controlling the flow of various types of fluid such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like; the butterfly valve mainly plays a role in cutting off and throttling on a pipeline, and the butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly valve body in the valve body, so that the opening and closing or adjusting purpose is achieved.
The double-seal butterfly valve of intaking of current hydraulic turbine generally adopts movable's piston to overhaul seal structure, for the motion seal structure, and the stroke is longer, because what its self sealed adoption is O shape rubber seal, in addition to the required precision height to processing equipment and processing, the weight of piston itself also can lead to the inhomogeneous of contact surface from top to bottom simultaneously, causes easily to leak and motion jamming, in case must overhaul its abandonment or after taking apart after the problem, it is fairly difficult to maintain.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a plate circle shroud type double containment butterfly valve of intaking is provided for solve the prior art water turbine that describes among the background art and intake double containment butterfly valve and easily cause leakage and motion card to hinder, and maintain the big problem of the degree of difficulty.
In order to achieve the above object, the present invention provides the following technical solutions: a plate ring surrounding belt type double-sealing water inlet butterfly valve comprises a valve body, wherein a valve shaft is arranged in a shaft hole of the valve body and connected with a double-flat-plate butterfly plate, the valve shaft is also externally connected with a driving rod, an overhauling sealing pair is arranged between the water inlet end of the valve body and a flat plate on one side of the double-flat-plate butterfly plate, and a working sealing pair is arranged between the water outlet end of the valve body and a flat plate on the other side of the double-flat-plate butterfly plate; the maintenance sealing pair comprises a valve body maintenance sealing ring arranged on the inner wall of the water inlet end of the valve body, an inflatable butterfly plate maintenance sealing ring is arranged at the position, corresponding to the valve body maintenance sealing ring, on the double-flat-plate butterfly plate, the double-flat-plate butterfly plate is connected with a first sealing gland through a first adjusting screw, and the butterfly plate maintenance sealing ring is pressed on the double-flat-plate butterfly plate through the first sealing gland.
Preferably: the valve body overhauls sealing washer and butterfly plate overhauls sealing washer contact department and is the conical surface.
Preferably: the working sealing pair comprises a valve body working sealing ring arranged on the inner wall of the water outlet end of the valve body, a butterfly plate working sealing ring is arranged on the double-flat-plate butterfly plate corresponding to the valve body working sealing ring, the double-flat-plate butterfly plate is connected with a second sealing gland through a second positioning screw, and the butterfly plate working sealing ring is pressed on the double-flat-plate butterfly plate through the second sealing gland.
The beneficial effect of adopting above technical scheme is:
the valve shaft and the double-flat butterfly plate can be driven to rotate within a range of 90 degrees by the arranged driving rod, so that the aim of cutting off or communicating media is fulfilled; when the maintenance sealing pair needs to be put in, compressed air enters the butterfly plate maintenance sealing ring to expand the butterfly plate maintenance sealing ring to contact with the valve body maintenance sealing ring 51 to seal the surrounding gap and generate enough sealing specific pressure, and then maintenance can be carried out; the sealing specific pressure of the overhaul sealing pair can be adjusted to ensure good sealing performance; when the maintenance sealing pair needs to be removed, gas in the butterfly plate maintenance sealing ring is firstly removed, the butterfly plate maintenance sealing ring is separated from the valve body maintenance sealing ring, and the valve can be normally opened and closed.
Drawings
Fig. 1 is a front view of the plate-ring surrounding-belt type double-sealing water inlet butterfly valve of the present invention.
Fig. 2 is a side view of the plate-ring surrounding-belt type double-sealing water inlet butterfly valve of the present invention.
Fig. 3 is a schematic structural diagram of the plate-ring surrounding-belt type double-sealing water inlet butterfly valve of the present invention when it is put into operation.
Fig. 4 is a schematic structural view of the plate-ring surrounding-belt type double-seal water-inlet butterfly valve of the present invention when it is released.
Fig. 5 is a schematic structural view of the working seal pair.
Wherein: the butterfly valve comprises a valve body 1, a double-flat butterfly plate 2, a valve shaft 3, a driving rod 4, an overhauling sealing pair 5, a valve body overhauling sealing ring 51, a butterfly plate overhauling sealing ring 52, a first sealing gland 53, a first adjusting screw 54, a water inlet end 6, a working sealing pair 7, a valve body working sealing ring 71, a butterfly plate working sealing ring 72, a second sealing gland 73, a second adjusting screw 74 and a water outlet end 8.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the embodiment, as shown in fig. 1-5, in the embodiment, a plate-ring surrounding-belt type double-sealing water inlet butterfly valve includes a valve body 1, a valve shaft 3 is disposed in a shaft hole of the valve body 1, the valve shaft 3 is connected with a double-plate butterfly plate 2, the valve shaft 3 is further externally connected with a drive rod 4, a water inlet end 6 of the valve body 1 and a plate on one side of the double-plate butterfly plate 2 are provided with an inspection sealing pair 5, and a water outlet end 8 of the valve body 1 and a plate on the other side of the double-plate butterfly plate 2 are provided with a working sealing pair 7; the maintenance sealing pair 5 comprises a valve body maintenance sealing ring 51 arranged on the inner wall of the water inlet end of the valve body 1, an inflatable butterfly plate maintenance sealing ring 52 is arranged at the position, corresponding to the valve body maintenance sealing ring 51, on the double-flat-plate butterfly plate 2, the double-flat-plate butterfly plate 2 is connected with a first sealing gland 53 through a first adjusting screw 54, and the butterfly plate maintenance sealing ring 52 is pressed on the double-flat-plate butterfly plate 2 through the first sealing gland 53.
Preferably: the contact part of the valve body overhaul sealing ring 51 and the butterfly plate overhaul sealing ring 52 is a conical surface.
Preferably: the working sealing pair 7 comprises a valve body working sealing ring 71 arranged on the inner wall of the water outlet end 8 of the valve body 1, a butterfly plate working sealing ring 72 is arranged on the double-flat-plate butterfly plate 2 corresponding to the valve body working sealing ring 71, the double-flat-plate butterfly plate 2 is connected with a second sealing gland 73 through a second positioning screw 74, and the butterfly plate working sealing ring 72 is pressed on the double-flat-plate butterfly plate 2 through the second sealing gland 73.
The specific implementation manner of this embodiment:
the present application is carried out in such a way that,
the valve shaft 3 and the double-plate butterfly plate 2 are driven by the driving rod 4 to rotate within a range of 90 degrees to achieve the purpose of cutting off or communicating media, only the working sealing pair 7 is put into use during normal working, when the working sealing or the shaft diameter sealing needs to be overhauled, in order to not evacuate water in a pressure steel pipe and not influence the normal working of other units, when the overhauling sealing pair 5 needs to be put into work, air is sent into the butterfly plate overhauling sealing ring 52, so that the butterfly plate overhauling sealing ring 52 expands, the expanded butterfly plate overhauling sealing ring 52 is in contact with the valve body overhauling sealing ring 51 to seal the gap between the butterfly plate overhauling sealing ring 52 and the valve body overhauling sealing ring 51, and sufficient sealing specific pressure is generated, and then overhauling can be carried out; the sealing specific pressure of the overhaul sealing pair 5 can be adjusted to ensure good sealing performance; when the maintenance sealing pair 5 needs to be removed, gas in the butterfly plate maintenance sealing ring 52 is firstly removed, the butterfly plate maintenance sealing ring 52 is sealed to be completely separated from the valve body maintenance sealing ring 51, and the valve can be normally opened and closed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.
Claims (3)
1. The utility model provides a plate ring shroud formula dual seal butterfly valve of intaking, includes the valve body, its characterized in that: a valve shaft is arranged in a shaft hole of the valve body and connected with the double-flat-plate butterfly plate, the valve shaft is further externally connected with a driving rod, a water inlet end of the valve body and a flat plate on one side of the double-flat-plate butterfly plate are provided with an overhauling sealing pair, and a water outlet end of the valve body and a flat plate on the other side of the double-flat-plate butterfly plate are provided with a working sealing pair; the maintenance sealing pair comprises a valve body maintenance sealing ring arranged on the inner wall of the water inlet end of the valve body, an inflatable butterfly plate maintenance sealing ring is arranged at the position, corresponding to the valve body maintenance sealing ring, on the double-flat-plate butterfly plate, the double-flat-plate butterfly plate is connected with a first sealing gland through a first adjusting screw, and the butterfly plate maintenance sealing ring is pressed on the double-flat-plate butterfly plate through the first sealing gland.
2. The plate-ring shroud-band type dual-seal water inlet butterfly valve according to claim 1, wherein the contact portion of the valve body service seal ring and the butterfly plate service seal ring is a conical surface.
3. The plate-ring surrounding-belt type double-seal water inlet butterfly valve according to claim 2, wherein the working sealing pair comprises a valve body working sealing ring arranged at the inner wall of the water outlet end of the valve body, a butterfly plate working sealing ring is arranged on the double-flat-plate butterfly plate at a position corresponding to the valve body working sealing ring, the double-flat-plate butterfly plate is connected with a second sealing gland through a second positioning screw, and the second sealing gland presses the butterfly plate working sealing ring on the double-flat-plate butterfly plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022177253.XU CN213871157U (en) | 2020-09-29 | 2020-09-29 | Plate ring surrounding belt type double-seal water inlet butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022177253.XU CN213871157U (en) | 2020-09-29 | 2020-09-29 | Plate ring surrounding belt type double-seal water inlet butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213871157U true CN213871157U (en) | 2021-08-03 |
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ID=77069926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022177253.XU Active CN213871157U (en) | 2020-09-29 | 2020-09-29 | Plate ring surrounding belt type double-seal water inlet butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213871157U (en) |
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2020
- 2020-09-29 CN CN202022177253.XU patent/CN213871157U/en active Active
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