CN202132519U - Double-eccentric butterfly valve adopting soft and hard seal - Google Patents
Double-eccentric butterfly valve adopting soft and hard seal Download PDFInfo
- Publication number
- CN202132519U CN202132519U CN201120183064U CN201120183064U CN202132519U CN 202132519 U CN202132519 U CN 202132519U CN 201120183064 U CN201120183064 U CN 201120183064U CN 201120183064 U CN201120183064 U CN 201120183064U CN 202132519 U CN202132519 U CN 202132519U
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- valve
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- stainless steel
- valve rod
- rubber seal
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Abstract
The utility model relates to the technical field of butterfly valves, in particular to a double-eccentric butterfly valve adopting soft and hard seal. The butterfly valve comprises a valve body, a valve core, and a transmission on-off device; the valve core comprises a valve plate, an upper valve rod, and a lower valve rod, wherein the upper end of the upper valve rod is connected with the transmission on-off device, the lower part of the upper valve rod is connected with the upper end of the valve plate, and the upper part of the lower valve rod is connected with the lower end of the valve plate; a valve seat is fixed on the valve body at the periphery of the valve plate, and comprises a stainless steel seal seat and a rubber seal seat; curved convex surface is arranged on the outer circumference of the valve plate, and also arranged on the inner circumference of the stainless steel seal seat and the rubber seal seat; and the curved convex surface on the outer circumference of the valve plate and that on the inner circumference of the stainless steel seal seat and the rubber seal seat are contacted with each other. The stainless steel seal seat and the rubber seal seat are in seal contact with the valve plate simultaneously, overcoming the shortages and the defects of single soft seal or single hard seal, and achieving advantages of both the soft seal and the hard seal.
Description
Technical field
The utility model relates to the butterfly valve technical field, particularly a kind of two eccentric soft and hard seal butterfly valves.
Background technique
In water-feeding & drainaging pipeline, two eccentric sealed butterfly valves can play throttling action, by people are known.The sealing pair form of traditional double eccentric butterfly valve has two kinds of forms of soft seal and hard sealing.Both sides one side of soft sealing butterfly valve sealing pair is a metallic material; Opposite side is that resilient nonmetallic material constitute. the sealability of this sealing is better; But non-refractory is easy to wear, and mechanicalness is relatively poor; Impurity also normally can impel the valve seat damage of soft sealing butterfly valve in the water, thereby causes valve leak.On the contrary, the both sides of hard seal butterfly valve sealing pair all are to be made up of metallic material, and the soft seal that compares of the sealability of this sealing is poor, but it is high temperature resistant, and not easy to wear, mechanicalness is better, and working life is longer.In addition, in the long-term using process of valve, the limit stoper of valve opening and closing can produce displacement, thereby causes hard seal butterfly valve to open and close the valve leak that impels not in place.So in order to improve the sealability of butterfly valve, designing the butterfly valve that a kind of soft and hard seal combines is very to be necessary.
The model utility content
The purpose of the utility model is the deficiency to existing technology, provide a kind of simple in structure, fabricating cost is low, the two eccentric soft and hard seal butterfly valve of good sealing effect.
For realizing above-mentioned purpose, the utility model adopts following technological scheme:
The described a kind of two eccentric soft and hard seal butterfly valves of the utility model comprise valve body, spool and transmission start-stop device; Said spool comprises valve plate, upper valve rod and lower valve rod; The mounting hole that valve body top is passed in said upper valve rod upper end is connected with the transmission start-stop device; The body cavity bottom can be located in said lower valve rod bottom with rotating freely; Said upper valve rod bottom is connected with the valve plate upper end with positioning block through straight pin, and said lower valve rod top is connected with the valve plate lower end through straight pin; Said valve body two ends respectively are provided with a flange; Be fixed with valve seat on the valve body of said valve plate periphery; Said valve seat is made up of stainless steel sealing seat and rubber seal seat; Said sealing surface of valve plate is made as spherical shape, and the inner peripheral surface of said stainless steel sealing seat and rubber seal seat all is made as curved convex surface, and said sealing surface of valve plate contacts with the inner peripheral surface of stainless steel sealing seat with the rubber seal seat simultaneously.
Further, mutual mutually embedding is arranged side by side said stainless steel sealing seat with the rubber seal seat, and the stainless steel sealing seat is located at the inboard of rubber seal seat, is fixed with the O RunddichtringO between stainless steel sealing seat and the valve body.
Further, said stainless steel sealing seat and rubber seal seat are fixed on the valve body through gland.
Further, said lower valve rod bottom is provided with spacer, and said spacer is fixed by end plate.
Further, said upper valve rod top is arranged with the packing support plate cover, and said packing support plate set upper side is provided with hold-down grid, is provided with elastic washer between said packing support plate set upper side and the hold-down grid.
Further, be equiped with clamp-screw on the said straight pin.
The utility model beneficial effect is: the utility model stainless steel sealing seat seals with valve plate simultaneously with the rubber seal seat and contacts; Effectively overcome the deficiency and the defective of single soft seal or single hard sealing, had soft seal and the hard advantage that is had that seals simultaneously concurrently.The utility model structure, good sealing effect and fabricating cost are low.
Description of drawings
Fig. 1 is the sectional structure schematic representation of the utility model;
Fig. 2 is an A place structure for amplifying schematic representation among Fig. 1.
Among the figure:
2, end plate, 4, spacer, 5, valve body, 6, Lower shaft sleeve,
7, straight pin, 8, clamp-screw, 9, lower valve rod, 10, valve plate,
11, upper valve rod, 12, positioning block, 13, the O RunddichtringO, 14, the rubber seal seat,
15, gland, 16, the stainless steel sealing seat, 17, flange, 18, Upper shaft sleeve,
20, packing support plate cover; 23, elastic washer; 24, hold-down grid; 27, transmission start-stop device.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
To shown in Figure 2, a kind of two eccentric soft and hard seal butterfly valves of the utility model comprise valve body 5, spool and transmission start-stop device 27 like Fig. 1, and these three parts are the utility model basic structural components, all adopt hard metal material to be made.
Said spool comprises valve plate 10, upper valve rod 11 and lower valve rod 9; Said upper valve rod 11 bottoms are connected with valve plate 10 upper ends with positioning block 12 through straight pin 7, replace the traditional single straight pin of usefulness or the Placement of taper pin, have improved the stress intensity of the utility model effectively.Said lower valve rod 9 tops are connected with valve plate 10 lower ends through straight pin 7, and promising effect fixed cylinder pin 7 is avoided coming off, and is equiped with clamp-screw 8 on the said straight pin 7.The mounting hole that valve body 5 tops are passed in said upper valve rod 11 upper ends is connected with transmission start-stop device 27; Valve body 5 inner chamber bottoms can be located in said lower valve rod 9 bottoms with rotating freely.
Said upper valve rod 11 tops are arranged with Upper shaft sleeve 18.Said lower valve rod 9 bottoms are arranged with Lower shaft sleeve 6.
Said valve plate 10 peripheries are fixed with valve seat, particularly, are fixed on the valve body 5 through gland 15.Said valve seat is made up of stainless steel sealing seat 16 and rubber seal seat 14; Particularly; Mutual mutually embedding is arranged side by side said stainless steel sealing seat 16 with rubber seal seat 14, promptly on stainless steel sealing seat 16, is provided with the inlaid hole (not shown), and rubber seal seat 14 is inlayed in it.Stainless steel sealing seat 16 is located at the inboard of rubber seal seat 14, is fixed with O RunddichtringO 13 between stainless steel sealing seat 16 and the valve body 5.
Said valve plate 10 peripheries are made as curved convex surface, and the interior Zhou Jun of said stainless steel sealing seat 16 and rubber seal seat 14 is made as curved convex surface, and the curved convex surface of said valve plate 10 peripheries contacts with the curved convex surface of interior week of stainless steel sealing seat 16 and rubber seal seat 14 simultaneously.Be that valve plate 10 peripheral stainless steel sealing seats 16 form two seals with rubber seal seat 14, sealing is the sealing between valve plate 10 and the stainless steel sealing seat 16 together, is hard sealing; Another road sealing is the sealing between valve plate 10 and the rubber seal seat 14, is soft seal.
Said valve body 5 two ends respectively are provided with a flange 17, and said valve body 5 is provided with the stiffening rib (not shown) with flange 17 joints, can effectively increase the join strength of valve body 5 and flange 17.
Said lower valve rod 9 bottoms have spacer 4, can pass through the sealing effect of regulating thickness the utility model of adjustment spacer 4, and said spacer 4 is fixing by end plate 2, is provided with seal ring between end plate 2 and the valve body 5, to increase the tightness of the utility model.
Said upper valve rod 11 tops are arranged with packing support plate cover 20, and said packing support plate overlaps 20 upper ends and is provided with hold-down grid 24; Said packing support plate overlaps between 20 upper ends and the hold-down grid 24 and is provided with elastic washer 23.
The above only is the preferred embodiments of the utility model, so all equivalences of doing according to the described structure of the utility model patent claim, characteristic and principle change or modify, includes in the utility model patent claim.
Claims (6)
1. a two eccentric soft and hard seal butterfly valve comprises valve body (5), spool and transmission start-stop device (27); Said spool comprises valve plate (10), upper valve rod (11) and lower valve rod (9); The mounting hole that valve body (5) top is passed in said upper valve rod (11) upper end is connected with transmission start-stop device (27); Valve body (5) inner chamber bottom can be located in said lower valve rod (9) bottom with rotating freely; Said upper valve rod (11) bottom is connected with valve plate (10) upper end with positioning block (12) through straight pin (7), and said lower valve rod (9) top is connected with valve plate (10) lower end through straight pin (7); Said valve body (5) two ends respectively are provided with a flange (17); It is characterized in that: be fixed with valve seat on the valve body (5) of said valve plate (10) periphery; Said valve seat is made up of stainless steel sealing seat (16) and rubber seal seat (14); Said valve plate (10) sealing surface is made as spherical shape, and the inner peripheral surface of said stainless steel sealing seat (16) and rubber seal seat (14) all is made as curved convex surface, and said valve plate (10) sealing surface contacts with the inner peripheral surface of stainless steel sealing seat (16) with rubber seal seat (14) simultaneously.
2. two eccentric soft and hard seal butterfly valve according to claim 1; It is characterized in that: mutual mutually embedding is arranged side by side said stainless steel sealing seat (16) with rubber seal seat (14); Stainless steel sealing seat (16) is located at the inboard of rubber seal seat (14), is fixed with O RunddichtringO (13) between stainless steel sealing seat (16) and the valve body (5).
3. two eccentric soft and hard seal butterfly valve according to claim 1 and 2, it is characterized in that: said stainless steel sealing seat (16) and rubber seal seat (14) are fixed on the valve body (5) through gland (15).
4. two eccentric soft and hard seal butterfly valve according to claim 3 is characterized in that: said lower valve rod (9) bottom is provided with spacer (4), and said spacer (4) is fixing by end plate (2).
5. two eccentric soft and hard seal butterfly valve according to claim 4, it is characterized in that: said upper valve rod (11) top is arranged with packing support plate cover (20), and said packing support plate cover (20) upper end is provided with hold-down grid (24); Be provided with elastic washer (23) between said packing support plate cover (20) upper end and the hold-down grid (24).
6. two eccentric soft and hard seal butterfly valve according to claim 5 is characterized in that: be equiped with clamp-screw (8) on the said straight pin (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120183064U CN202132519U (en) | 2011-05-31 | 2011-05-31 | Double-eccentric butterfly valve adopting soft and hard seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120183064U CN202132519U (en) | 2011-05-31 | 2011-05-31 | Double-eccentric butterfly valve adopting soft and hard seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202132519U true CN202132519U (en) | 2012-02-01 |
Family
ID=45521286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120183064U Expired - Fee Related CN202132519U (en) | 2011-05-31 | 2011-05-31 | Double-eccentric butterfly valve adopting soft and hard seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202132519U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115468034A (en) * | 2022-09-24 | 2022-12-13 | 江苏丰禾机械制造股份有限公司 | Intelligent conical valve shockproof soft and hard lip type self-sealing device applied to pipeline tail end |
-
2011
- 2011-05-31 CN CN201120183064U patent/CN202132519U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115468034A (en) * | 2022-09-24 | 2022-12-13 | 江苏丰禾机械制造股份有限公司 | Intelligent conical valve shockproof soft and hard lip type self-sealing device applied to pipeline tail end |
| CN115468034B (en) * | 2022-09-24 | 2023-10-13 | 江苏丰禾机械制造股份有限公司 | Adjusting method for shock-proof soft and hard lip type sealing pipeline of conical valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120201 Termination date: 20150531 |
|
| EXPY | Termination of patent right or utility model |