CN202955242U - Double eccentric flexible butterfly valve - Google Patents
Double eccentric flexible butterfly valve Download PDFInfo
- Publication number
- CN202955242U CN202955242U CN 201220627070 CN201220627070U CN202955242U CN 202955242 U CN202955242 U CN 202955242U CN 201220627070 CN201220627070 CN 201220627070 CN 201220627070 U CN201220627070 U CN 201220627070U CN 202955242 U CN202955242 U CN 202955242U
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- valve
- valve body
- butterfly
- valve rod
- gland
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Abstract
The utility model relates to the technical field of butterfly valves, in particular to a double eccentric flexible butterfly valve. The double eccentric flexible butterfly valve comprises a valve body, a valve core and a rubber expansion joint. The valve body is provided with a valve seat and a pressing sleeve, wherein one end of the pressing sleeve is contacted with the valve seat, and the other end of the pressing sleeve is connected with the valve body. The valve core comprises a butterfly plate, an upper valve rod and a lower valve rod, wherein a spherical stainless sealing ring is disposed on the periphery of the butterfly plate, a sealing surface of the butterfly plate is contacted with the valve seat, the butterfly plate is provided with an upper shaft hole and a lower shaft hole and is connected with the upper valve rod and the lower valve rod respectively, and the upper end of the upper valve rod is connected with a transmission start and stop device. One end of the rubber expansion joint is connected with the valve body by being fixed to the valve body through a hexagon bolt, and the other end of the rubber expansion joint is provided with a flange piece and is connected with a flange in a pipeline. The double eccentric flexible butterfly valve has the advantages that structure is simple, operation is convenient, large axial, radial and angular displacement can be achieved, and influence of stress in the pipeline on the valve is avoided effectively.
Description
Technical field
The utility model relates to the butterfly valve technical field, particularly a kind of pair of eccentric expansion butterfly valve.
Background technique
Two eccentric expansion butterfly valves are a kind of in many pipeline valves, are mainly used in controlling the effect of expanding with heat and contract with cold of liquid medium in pipeline being dammed, adjusting temperature difference generation in stream and compensation conduit.Existing flexible butterfly valve normally installs in addition an expansion bend additional on the butterfly valve basis, and described expansion bend is comprised of parts such as expansion joint, flexible joint chair, pressing plate, O shape circles.This flexible butterfly valve is comparatively complicated on structural design, and more difficult when the installation or removal valve, is difficult to operation.In addition, the expansion joint of expansion bend can't be carried out radially or angular displacement in operation, can't effectively adjust valve and easily cause valve to damage with the spacing that is connected between pipeline when surface subsidence problem occurs.Therefore, design a kind of simple in structure, easy to use, can bear larger axis to, with two eccentric expansion butterfly valves of angular displacement, be radially very necessary.
The model utility content
The purpose of this utility model is for the deficiencies in the prior art, provide a kind of can bear larger axis to, radially with angular displacement, easy-disassembling-assembling pair of eccentric expansion butterfly valve.
For achieving the above object, the utility model by the following technical solutions.
A kind of pair of eccentric expansion butterfly valve described in the utility model, comprise valve body, butterfly plate, valve rod, valve seat, gland and rubber expansion adapter.Described valve rod is comprised of upper valve rod and lower valve rod, and described upper valve rod one end is inserted in the upper shaft hole of butterfly plate and is fixedly connected with butterfly plate one end by being arranged on Upper shaft sleeve on valve body, and the upper valve rod the other end coordinates with valve seal; Described lower valve rod one end is inserted in the lower shaft hole of butterfly plate and is fixedly connected with the butterfly plate the other end by being arranged on Lower shaft sleeve on valve body, the lower valve rod the other end coordinates with valve seal; The end face that described butterfly plate coordinates with valve base sealing is shaped with the ball-type steel ring; Described gland front-end face is fixedly connected with the valve body front-end face is adjustable, and the gland ear end face is pushed against the end of valve seat; Described rubber expansion adapter is fixed on valve inleting water mouth end place.
Further, described upper valve rod one end is inserted in the upper shaft hole of butterfly plate and is connected to one by straight pin II and butterfly plate one end by being arranged on Upper shaft sleeve on valve body, and the upper valve rod the other end coordinates with valve seal by pressing plate and filler; Described pressing plate is connected to one by screw II and valve body; Described lower valve rod one end is inserted in the lower shaft hole of butterfly plate and is connected to one with straight pin I and the butterfly plate the other end by being arranged on Lower shaft sleeve on valve body, the lower valve rod the other end encloses and coordinates with valve seal by end cap and O shape; Described end cap is connected to one by hexagon head bolt and valve body.
Further, described gland front-end face is fixedly connected with valve body by screw I and is gapped between the two.
Further, described rubber expansion adapter, it comprises flange plate, rubber flexible connecting pipe and gland, described rubber flexible connecting pipe, one end is arranged in the groove of valve body, and the other end is connected with flange plate and connects valve body (26) and two ends piping flange by double-screw bolt (21), and rubber expansion adapter and valve body (26), pipeline are linked together; Described gland is connected with rubber flexible connecting pipe and is fixed on by hexagon head bolt on the flanged surface of valve body.
After adopting said structure, the utility model beneficial effect is: the utility model rubber expansion adapter is fixed together by hexagon head bolt and valve body, in pipeline, because of the temperature difference, expand with heat and contract with cold or occur the problem of surface subsidence bright can to axially, radially and angle carry out displacement and make up the spacing that is connected between pipeline and valve, effectively avoid valve not to be subject to the impact of ducted pressure stress or tensile stress, increased the working life of valve.
The accompanying drawing explanation
Fig. 1 is the utility model cross-sectional view.
Fig. 2 is the rubber expansion adapter cross-sectional view.
In figure:
1, hexagon head bolt I 2, end cap 3, O shape circle 4, adjustment packing ring
5, Lower shaft sleeve 6, screw I 7, gland 8, valve seat
9, lower valve rod 10, straight pin I 11, butterfly plate 12, straight pin II
13, positioning block 14, upper valve rod 15, Upper shaft sleeve 16, spacer ring
17, filler 18, pressing plate 19, screw II 20, nut
21, double-screw bolt 22, flange plate 23, rubber flexible connecting pipe
24, hexagon head bolt II 25, gland 26, valve body
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1 to Figure 2, a kind of pair of eccentric expansion butterfly valve described in the utility model, comprise valve body 26, butterfly plate 11, valve rod, valve seat 8, gland 7 and rubber expansion adapter, and above-mentioned several parts form the utility model agent structure.Valve rod is comprised of upper valve rod 14 and lower valve rod 9, upper valve rod 14 1 ends are inserted in the upper shaft hole of butterfly plate 11 and are connected to one by straight pin II 12 and butterfly plate 11 1 ends by being arranged on Upper shaft sleeve 15 on valve body 26, be provided with spacer ring 16 between upper valve rod 14 and Upper shaft sleeve 15, upper valve rod 14 the other ends are sealed and matched with valve body 26 by pressing plate 18 and filler 17, and pressing plate 18 is connected to one by screw II 19 and valve body 26, lower valve rod 9 one ends are inserted in the lower shaft hole of butterfly plate 11 and are connected to one by straight pin I10 and butterfly plate 11 the other ends by being arranged on Lower shaft sleeve 5 on valve body 26, lower valve rod 9 the other ends are sealed and matched with valve body 26 by end cap 2 and O shape circle 3, end cap 2 is connected to one with valve body 26 by hexagon head bolt I 1, gland 7 front-end faces are fixedly connected with valve body 26 by screw I6 and are gapped between the two, gland 7 ear end faces are pushed against the end of valve seat 8, valve seat 83 is arranged in the groove of valve body 26, can be by the adjusting control valve seat 8 to gland 7 and the decrement of butterfly plate 11, so that reach desirable sealing effect, and wear resistance and the working life of assurance valve seat 8, butterfly plate 11 sealing surfaces are that the stainless steel coil that is welded in gabarit forms through fine finishing, its sealing surface shape is rendered as spherical shape and valve seat 8 is sealed and matched, upper valve rod 14 is provided with positioning block 13, be provided with between lower valve rod 9 and end cap 2 and adjust packing ring 4.
As main inventive point of the present utility model, described rubber expansion adapter, it comprises flange plate 22, rubber flexible connecting pipe 23 and gland 25, described rubber flexible connecting pipe 23 is arranged in the groove of valve body 26 inlet end, the position, intermediate portion is that protruding spherical shape is convenient to be stretched or compress, and two ends are respectively equipped with flange plate 22 and gland 25; The end that described gland 25 is arranged on rubber flexible connecting pipe 23 is fixedly connected with valve body 26 by hexagon head bolt II 24 and compresses rubber flexible connecting pipe 23 simultaneously and make in its groove that is fixed on valve body 26 inlet end; Rubber expansion adapter is connected together by double-screw bolt 21 and nut and valve body and pipeline, and the distance between adjustable nut 20 is controlled stretching or the reduction length of rubber expansion adapter.
The above is only better embodiment of the present utility model, and the equivalence of doing according to the described structure of the utility model patent claim, feature and principle therefore all changes or modifies, and is included in the utility model patent claim.
Claims (4)
1. a two eccentric expansion butterfly valve, it comprises valve body (26), valve rod, butterfly plate (11), valve seat (8), gland (7) and rubber expansion adapter, it is characterized in that: described valve rod is comprised of upper valve rod (14) and lower valve rod (9), described upper valve rod (14) one ends are inserted in the upper shaft hole of butterfly plate (11) and are fixedly connected with butterfly plate (11) one ends by being arranged on Upper shaft sleeve (15) on valve body (26), upper valve rod (14) the other end and valve body (26) are sealed and matched; Described lower valve rod (9) one ends are inserted in the lower shaft hole of butterfly plate (11) and are fixedly connected with butterfly plate (11) the other end by being arranged on Lower shaft sleeve (5) on valve body (26), the lower valve rod the other end and valve body (26) are sealed and matched; Described butterfly plate (11) is shaped with the ball-type steel ring with the end face that valve seat (8) is sealed and matched; Described gland (7) front-end face is pushed against the end of valve seat (8) with adjustable being fixedly connected with of valve body (26) front-end face, gland (7) ear end face; Described rubber expansion adapter is fixed on valve body (26) inlet end place.
2. according to claim 1 pair of eccentric expansion butterfly valve, it is characterized in that: described rubber expansion adapter, it comprises flange plate (22), rubber flexible connecting pipe (23) and gland (25), described rubber flexible connecting pipe (23) is arranged in the groove of valve body (26), and two ends are connected with gland (25) and flange plate (22) respectively; Described gland (25) is connected and is fixed on the flanged surface of valve body (26) with rubber flexible connecting pipe (23).
3. according to claim 2 pair of eccentric expansion butterfly valve, it is characterized in that: described rubber flexible connecting pipe (23) intermediate portion is shaped as protruding ball shape.
4. according to claim 1 and 2 pair of eccentric expansion butterfly valve is characterized in that: described for rubber expansion adapter double-screw bolt (21) connect valve body (26) and two ends piping flange, rubber expansion adapter and valve body (26), pipeline are linked together
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220627070 CN202955242U (en) | 2012-11-25 | 2012-11-25 | Double eccentric flexible butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220627070 CN202955242U (en) | 2012-11-25 | 2012-11-25 | Double eccentric flexible butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202955242U true CN202955242U (en) | 2013-05-29 |
Family
ID=48460814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220627070 Expired - Fee Related CN202955242U (en) | 2012-11-25 | 2012-11-25 | Double eccentric flexible butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202955242U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864106A (en) * | 2015-05-26 | 2015-08-26 | 柳州钢铁股份有限公司 | Metal hard sealing butterfly valve with moving valve seat |
| CN109282053A (en) * | 2018-11-30 | 2019-01-29 | 博纳斯威阀门股份有限公司 | Eccentric half-ball valve with Telescopic |
| CN114811116A (en) * | 2021-12-27 | 2022-07-29 | 贵州航天智慧农业有限公司 | Multifunctional three-way intelligent butterfly valve |
-
2012
- 2012-11-25 CN CN 201220627070 patent/CN202955242U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864106A (en) * | 2015-05-26 | 2015-08-26 | 柳州钢铁股份有限公司 | Metal hard sealing butterfly valve with moving valve seat |
| CN109282053A (en) * | 2018-11-30 | 2019-01-29 | 博纳斯威阀门股份有限公司 | Eccentric half-ball valve with Telescopic |
| CN114811116A (en) * | 2021-12-27 | 2022-07-29 | 贵州航天智慧农业有限公司 | Multifunctional three-way intelligent butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20131125 |