CN210716002U - Double-eccentric butterfly valve with high sealing performance - Google Patents
Double-eccentric butterfly valve with high sealing performance Download PDFInfo
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- CN210716002U CN210716002U CN201921730965.0U CN201921730965U CN210716002U CN 210716002 U CN210716002 U CN 210716002U CN 201921730965 U CN201921730965 U CN 201921730965U CN 210716002 U CN210716002 U CN 210716002U
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Abstract
The utility model discloses a double eccentric butterfly valve with high sealing performance in the valve field, which comprises a valve cover and a valve body; the valve cover comprises a hand wheel, a valve rod and a bracket; the hand wheel is connected with the valve rod, and the valve rod ascends through rotation of the hand wheel; a flange is arranged at the matching position of the valve body and the valve cover, and a flange pressing sleeve, a rectangular filler and a shaft sleeve are sequentially arranged below the flange and axially and downwards along the valve rod; a circular channel is arranged in the valve body, and the lower part of the valve rod is axially and rotatably connected with the valve body; the valve rod is fixedly connected with the valve plate, and a sealing device is arranged between the valve plate and the valve body; the sealing device comprises a valve seat and an elastic sealing ring wrapped in the valve seat, and is arranged at a relative depression of the valve body and the gland; the gland is fixedly connected with the valve body through a screw. The utility model discloses novel structure, the leakproofness is high, is difficult for revealing.
Description
Technical Field
The utility model relates to a valve field of making, in particular to double eccentric butterfly valve of high leakproofness.
Background
Valves are used to control the flow of various types of fluids, acting as shut-off and throttling valves on the pipes. The butterfly valve opens and closes the piece and is a disc-shaped butterfly plate valve disc, it is rotatory around the axis of valve rod in the valve body, thereby reach the purpose of opening and close or adjusting, the butterfly valve of closed condition realizes sealed the liquid stream of blocking through the inseparable laminating of sealed face between valve disc and the disk seat, the inseparable laminating of sealed face between valve disc and the disk seat needs to rely on great drive power to produce a certain amount of elastic deformation, sealed face extrusion is tighter, the sealing effect is better, therefore it is also corresponding great to open and close the resistance to reach the sealed effect of ideal, bring unchangeably for the operation, and can have great friction in the valve opening and closing process, sealed face is impaired easily, do not have the elastic compensation and cause sealed ineffic.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a leakproofness is high, the difficult double eccentric butterfly valve of a high leakproofness of revealing.
The purpose of the utility model is realized like this: a double eccentric butterfly valve with high sealing performance comprises a valve cover and a valve body;
the valve cover comprises a hand wheel, a valve rod and a bracket; the hand wheel is connected with the valve rod, and the valve rod ascends through rotation of the hand wheel;
a flange is arranged at the matching position of the valve body and the valve cover, and a flange pressing sleeve, a rectangular filler and a shaft sleeve are sequentially arranged below the flange and axially and downwards along the valve rod; a circular channel is arranged in the valve body, and the lower part of the valve rod is axially and rotatably connected with the valve body; the valve rod is fixedly connected with the valve plate, and a sealing device is arranged between the valve plate and the valve body; the sealing device comprises a valve seat and an elastic sealing ring wrapped in the valve seat, and is arranged at a relative depression of the valve body and the gland; the gland is fixedly connected with the valve body through a screw.
Compared with the prior art, the utility model discloses an useful part lies in: because the elastic sealing ring is arranged in the sealing device, the sealing device can obtain reverse acting force to perform elastic compensation, and the sealing strength is provided; because the expansion ring is arranged below the gland, the gland can be transferred to the valve seat contacted with the valve plate by upward force, and the sealing performance of the valve is further improved.
As the preferred scheme of the utility model, be provided with the toper round pin between valve plate and the valve rod.
As a further preferred scheme of the utility model, be provided with the ring that rises between gland and the valve body horizontal contact face.
As a further preferred scheme of the utility model, through bolt fixed connection between valve body and the valve gap.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of the structure of the sealing device of the present invention.
The valve comprises a valve cover 1, a valve body 2, a hand wheel 3, a valve rod 4, a support 5, a flange 6, a flange 7, a rectangular packing 8, a shaft sleeve 9, a circular channel 10, a valve plate 11, a sealing device 12, a valve seat 13, an elastic sealing ring 14, a gland 15, a screw 16, a conical pin 17, an expansion ring 18 and a bolt 19.
Detailed Description
As shown in fig. 1, a double eccentric butterfly valve with high sealing performance comprises a valve cover 1 and a valve body 2;
the valve cover 1 comprises a hand wheel 3, a valve rod 4 and a bracket 5; the hand wheel 3 is connected with the valve rod 4, and the valve rod 4 rotates and rises through the hand wheel 3;
a flange 6 is arranged at the matching position of the valve body 2 and the valve cover 1, and a flange pressing sleeve 7, a rectangular filler 8 and a shaft sleeve 9 are sequentially arranged below the flange 6 and axially and downwards along the valve rod 4; a circular channel 10 is arranged in the valve body 2, and the lower part of the valve rod 4 is axially and rotatably connected with the valve body 2; the valve rod 4 is fixedly connected with the valve plate 11, and a sealing device 12 is arranged between the valve plate 11 and the valve body 2; the sealing device 12 comprises a valve seat 13 and an elastic sealing ring 14 wrapped in the valve seat 13, and the sealing device 12 is arranged at a concave position of the valve body 2 relative to the gland 15; the gland 15 is fixedly connected with the valve body 2 through a screw 16.
A tapered pin 17 is provided between the valve plate 11 and the valve rod 4.
An expansion ring 18 is arranged between the horizontal contact surfaces of the gland 16 and the valve body 2.
The valve body 2 and the valve cover 1 are fixedly connected through a bolt 19.
The working principle of the utility model is explained as follows: the hand wheel 3 is rotated to drive the valve rod 4 to rotate, and further drive the valve plate 11 to rotate, so that the valve plate 11 is matched with the valve body 2; when the valve plate 11 contacts the valve body 2, the sealing device 12 is squeezed, the internal elastic sealing ring 14 performs elastic compensation on a reverse thrust force of the valve seat 13, so that the valve body 2 and the valve plate 11 can be compressed with high strength, meanwhile, the expansion ring 18 between the gland 15 and the valve body 2 can provide an upward force to the gland 15, and the gland 15 squeezes the valve seat 13 to further provide valve tightness.
The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.
Claims (4)
1. The utility model provides a two eccentric butterfly valves of high leakproofness which characterized in that: comprises a valve cover and a valve body;
the valve cover comprises a hand wheel, a valve rod and a bracket; the hand wheel is connected with the valve rod, and the valve rod ascends through rotation of the hand wheel;
a flange is arranged at the matching position of the valve body and the valve cover, and a flange pressing sleeve, a rectangular filler and a shaft sleeve are sequentially arranged below the flange and axially and downwards along the valve rod; a circular channel is arranged in the valve body, and the lower part of the valve rod is axially and rotatably connected with the valve body; the valve rod is fixedly connected with the valve plate, and a sealing device is arranged between the valve plate and the valve body; the sealing device comprises a valve seat and an elastic sealing ring wrapped in the valve seat, and is arranged at a relative depression of the valve body and the gland; the gland is fixedly connected with the valve body through a screw.
2. The double eccentric butterfly valve with high sealing performance according to claim 1, wherein: a conical pin is arranged between the valve plate and the valve rod.
3. The double eccentric butterfly valve with high sealing performance according to claim 1, wherein: and an expansion ring is arranged between the gland and the horizontal contact surface of the valve body.
4. The double eccentric butterfly valve with high sealing performance according to claim 1, wherein: the valve body is fixedly connected with the valve cover through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921730965.0U CN210716002U (en) | 2019-10-16 | 2019-10-16 | Double-eccentric butterfly valve with high sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921730965.0U CN210716002U (en) | 2019-10-16 | 2019-10-16 | Double-eccentric butterfly valve with high sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210716002U true CN210716002U (en) | 2020-06-09 |
Family
ID=70963421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921730965.0U Active CN210716002U (en) | 2019-10-16 | 2019-10-16 | Double-eccentric butterfly valve with high sealing performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210716002U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217642A (en) * | 2021-05-12 | 2021-08-06 | 埃克托德（上海）流体科技股份有限公司 | Double-eccentric butterfly valve with high sealing performance and convenient opening and closing |
-
2019
- 2019-10-16 CN CN201921730965.0U patent/CN210716002U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217642A (en) * | 2021-05-12 | 2021-08-06 | 埃克托德（上海）流体科技股份有限公司 | Double-eccentric butterfly valve with high sealing performance and convenient opening and closing |
| CN113217642B (en) * | 2021-05-12 | 2022-08-30 | 埃克托德（上海）流体科技股份有限公司 | Double-eccentric butterfly valve with high sealing performance and convenient opening and closing |
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