CN109899533B - Energy-saving rubber sealing butterfly valve - Google Patents
Energy-saving rubber sealing butterfly valve Download PDFInfo
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- CN109899533B CN109899533B CN201910174582.8A CN201910174582A CN109899533B CN 109899533 B CN109899533 B CN 109899533B CN 201910174582 A CN201910174582 A CN 201910174582A CN 109899533 B CN109899533 B CN 109899533B
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Abstract
An energy-saving rubber sealing butterfly valve can reduce friction and abrasion, and the larger the pressure in a pipeline is, the better the sealing performance is. The valve plate is fixedly provided with a valve shaft which is rotationally connected with the valve seat, the upper part of the valve seat is connected with a valve cover, the valve shaft upwards extends into the valve cover, the valve shaft is fixedly connected with one side of the valve plate, which deviates from the valve shaft, is provided with a valve cavity which is opened towards one side of the valve shaft, the side of the valve plate is provided with an annular valve groove, the valve cavity and the valve groove are communicated through a channel arranged in the valve plate, an opening of the valve cavity is provided with an elastic plate for sealing the valve cavity, the valve groove is provided with a sealing ring. When the valve plate is closed, the sealing effect of the valve plate on the valve seat is increased along with the increase of the pressure of water flow, so that the sealing effect is improved; when a smaller opening is opened by the butterfly valve, the sealing force of the valve plate to the valve seat is obviously reduced, the abrasion to the sealing ring is reduced, and the service life of the butterfly valve is prolonged.
Description
Technical Field
The invention relates to the field of screw hoist equipment, in particular to a novel hoist emergency operator.
Background
A butterfly valve, also called 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 is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. At present, two materials are commonly used for the sealing surface of the butterfly valve: the metal-to-metal sealing (metal sealing for short) and the metal-to-nonmetal soft material sealing (soft sealing for short), the long-life processing precision of the metal sealing is influenced, the soft sealing ring is easy to realize tight sealing, and the requirement on the processing precision of the sealing surface can be reduced in the processing. However, the valve flap is made of metal material and is limited by machining precision and roughness, so that the soft seal is easy to wear. As the pressure in the pipe increases, the sealing performance of the butterfly valve decreases with increasing service life.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the present invention aims to provide an energy-saving rubber sealing butterfly valve, which can reduce friction and abrasion, and has better sealing performance when the pressure in the pipeline is higher.
The technical scheme includes that the energy-saving rubber sealing butterfly valve comprises a valve seat with an inlet and an outlet, a valve plate is arranged in the valve seat, a valve shaft rotationally connected with the valve seat is fixed on the valve plate, the upper portion of the valve seat is connected with a valve cover, the valve shaft upwards extends into the valve cover, one side of the valve shaft is fixedly connected with the valve plate, one side, away from the valve shaft, of the valve plate is provided with a valve cavity opened to one side, away from the valve shaft, the side of the valve plate is provided with an annular valve groove, the valve cavity and the valve groove are communicated through a channel arranged in the valve plate, an opening of the valve cavity is provided with an elastic plate for sealing the valve cavity, a sealing ring for.
Preferably, the driving mechanism comprises a worm wheel arranged on the rotating shaft, the worm wheel is meshed with a worm, a worm shaft of the worm is rotatably connected with the valve cover, the worm shaft extends out of the valve cover, and a rotating hand wheel is arranged at the extending end of the worm shaft.
Preferably, the end of the inlet and the end of the outlet of the valve seat are provided with flange structures.
Preferably, one end of the valve shaft, which is far away from the valve rod, extends out of the valve seat, a valve shaft cover is arranged on the valve seat, and the valve shaft extends into the valve shaft cover and is rotatably connected with the valve shaft cover.
The novel beneficial effect of this use is: when the valve plate is closed, the sealing effect of the valve plate on the valve seat is increased along with the increase of the pressure of water flow, so that the sealing effect is improved; when a smaller opening is opened by the butterfly valve, the sealing force of the valve plate to the valve seat is obviously reduced, the abrasion to the sealing ring is reduced, and the service life of the butterfly valve is prolonged.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
The energy-saving rubber sealing butterfly valve is characterized in that a valve shaft 3 rotationally connected with the valve seat 1 is fixed on the valve plate 2, the upper portion of the valve seat 1 is connected with a valve cover 4, the valve shaft 3 upwards extends into the valve cover 4, the valve shaft 3 is fixedly connected with one side of the valve plate 2, one side, away from the valve shaft 3, of the valve plate 2 is provided with a valve cavity 5 opened towards one side away from the valve shaft 3, the side face of the valve plate 2 is provided with an annular valve groove 6, the valve cavity 5 is communicated with the valve groove 6 through a channel arranged in the valve plate 2, an opening of the valve cavity 5 is provided with an elastic plate 7 for sealing the valve cavity 5, the valve groove 6 is provided with an elastic sealing ring 8 for sealing the valve groove 6, and the valve shaft 3 is connected with a driving mechanism for driving the valve cavity to rotate.
The driving mechanism comprises a worm wheel 9 arranged on the rotating shaft, the worm wheel 9 is meshed with a worm, a worm shaft 10 of the worm is rotatably connected with the valve cover 4, and the end, extending out of the valve cover, of the worm shaft 10 is provided with a rotating hand wheel 11.
The end part of the inlet and the end part of the outlet of the valve seat 1 are both provided with flange structures 12. The flange structure 12 facilitates the installation of the butterfly valve in the corresponding pipe.
One end of the valve shaft 3, which is far away from the valve rod, extends out of the valve seat 1, a valve shaft cover 13 is arranged on the valve seat 1, and the valve shaft 3 extends into the valve shaft cover 13 and is rotationally connected with the valve shaft cover 13.
When the valve is used, the hand wheel 11 is rotated to drive the valve plate 2 to rotate, the elastic plate 7 faces to one end of water inlet, when the valve plate 2 seals the valve seat 1, pressure water in the valve seat 1 compresses the elastic plate 7, so that gas in the valve cavity 5 is compressed, the compressed gas presses the sealing ring 8 through a channel in the valve plate 2, and the sealing ring 8 compresses towards the inner wall of the valve seat and is close to the inner wall of the valve seat. The larger the pressure in the valve seat is, the tighter the sealing ring 8 is compressed to the valve seat, so that the valve plate 2 has a good sealing effect on the valve seat 1, and the water leakage phenomenon is not easy to generate. When the valve seat is opened to the rotary valve plate 2, the valve plate 2 rotates a smaller angle, the compressive force of water flow to the valve plate 2 is reduced, and then the inner wall compressive force of the sealing ring 8 to the valve seat is reduced, so that the subsequent rotary valve plate 2 is opened, the required operating force of the butterfly valve is reduced, the friction force between the sealing ring 8 and the valve plate 2 can be reduced, the abrasion to the sealing ring 8 is reduced, and the service life of the valve plate 2 is prolonged.
The novel beneficial effect of this use is: when the valve plate is closed, the sealing effect of the valve plate on the valve seat is increased along with the increase of the pressure of water flow, so that the sealing effect is improved; when a smaller opening is opened by the butterfly valve, the sealing force of the valve plate to the valve seat is obviously reduced, the abrasion to the sealing ring is reduced, and the service life of the butterfly valve is prolonged.
The above-mentioned embodiments do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should be included in the protection scope defined by the claims of the present invention.
Claims (4)
1. An energy-saving rubber sealing butterfly valve comprises a valve seat (1) with an inlet and an outlet, a valve plate (2) is arranged in the valve seat (1), a valve shaft (3) rotationally connected with the valve seat (1) is fixed on the valve plate (2), a valve cover (4) is connected to the upper portion of the valve seat (1), the valve shaft (3) upwards extends into the valve cover (4), the valve shaft (3) is fixedly connected with one side of the valve plate (2), a valve cavity (5) opened to the side away from the valve shaft (3) is arranged on the side face of the valve plate (2) away from the valve shaft (3), the energy-saving rubber sealing butterfly valve is characterized in that an annular valve groove (6) is arranged on the side face of the valve plate (2), the valve cavity (5) and the valve groove (6) are communicated through a channel arranged in the valve plate (2), an elastic plate (7) for sealing the valve cavity (5) is arranged at an opening of the valve cavity, the valve shaft (3) is connected with a driving mechanism for driving the valve shaft to rotate.
2. The energy-saving rubber sealing butterfly valve according to claim 1, wherein the driving mechanism comprises a worm wheel (9) mounted on the rotating shaft, the worm wheel (9) is engaged with a worm, a worm shaft (10) of the worm is rotatably connected with the valve cover (4), the worm shaft (10) extends out of the valve cover, and the extending end of the worm shaft is provided with a rotating hand wheel (11).
3. An energy-saving rubber-sealed butterfly valve according to claim 1, characterised in that the valve seat (1) is provided with flange structures (12) at both the inlet end and the outlet end.
4. The energy-saving rubber sealing butterfly valve according to claim 1 or 2, wherein one end of the valve shaft (3) away from the valve rod extends out of the valve seat (1), a valve shaft cover (13) is mounted on the valve seat (1), and the valve shaft (3) extends into the valve shaft cover (13) and is rotatably connected with the valve shaft cover (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910174582.8A CN109899533B (en) | 2019-03-08 | 2019-03-08 | Energy-saving rubber sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910174582.8A CN109899533B (en) | 2019-03-08 | 2019-03-08 | Energy-saving rubber sealing butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109899533A CN109899533A (en) | 2019-06-18 |
| CN109899533B true CN109899533B (en) | 2020-06-05 |
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ID=66946888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910174582.8A Active CN109899533B (en) | 2019-03-08 | 2019-03-08 | Energy-saving rubber sealing butterfly valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN109899533B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4138090A (en) * | 1977-03-04 | 1979-02-06 | Sumner Joe D | Butterfly valve with two-way pressure enhanced sealing |
| JPH0643110B2 (en) * | 1989-03-01 | 1994-06-08 | クレハエラストマー株式会社 | Molding method for seat rings for butterfly valves |
| US5160118A (en) * | 1991-12-17 | 1992-11-03 | Stary Gary M | Pipeline valve apparatus |
| CN201306453Y (en) * | 2008-12-03 | 2009-09-09 | 黄剑峰 | Three-dimensional eccentric butterfly valve |
| CN102022552B (en) * | 2010-12-03 | 2012-08-08 | 浙江石化阀门有限公司 | Bidirectional sealing frictionless butterfly valve |
| CN103759024B (en) * | 2014-01-08 | 2016-04-20 | 铁岭特种阀门股份有限公司 | There is the bidirectional sealed butterfly valve of the floating type valve seat of fluid power and anti-silt function |
-
2019
- 2019-03-08 CN CN201910174582.8A patent/CN109899533B/en active Active
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| CN109899533A (en) | 2019-06-18 |
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