CN208793648U - Low leakage low-load butterfly valve - Google Patents
Low leakage low-load butterfly valve Download PDFInfo
- Publication number
- CN208793648U CN208793648U CN201821369602.4U CN201821369602U CN208793648U CN 208793648 U CN208793648 U CN 208793648U CN 201821369602 U CN201821369602 U CN 201821369602U CN 208793648 U CN208793648 U CN 208793648U
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- valve
- sealing ring
- sealing
- low
- seat
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Abstract
The utility model belongs to valve technology field, it is related to a kind of low leakage low-load butterfly valve, including valve body, rotation setting valve shaft in the valve opening of valve body, valve shaft, which is placed on the axis in body cavity, is arranged valve plate, and the sealing structure at valve plate both ends and the valve seat dynamic sealing of body cavity cooperate；The sealing structure includes the first sealing ring, sealing ring gasket, wherein the first sealing ring is set in the groove body formed on valve seat, groove body outer end is stretched out in first sealing ring outer end, sealing ring gasket is fixed on valve plate close to one side surface of the first sealing ring, another side surface of valve plate is fixed with locking nut, sealing adjustment bolt is threadedly engaged with locking nut to be connect, and the bolt end for sealing adjustment bolt is held out against in sealing ring pad on piece.The butterfly valve seal is reliable, and leakage rate is effectively reduced.
Description
Technical field
The utility model belongs to valve technology field, is related to a kind of low leakage low-load butterfly valve.
Background technique
Low-load butterfly valve is divided into opening and two kinds of back seat type by its structure, and style of opening is no valve seat construction, therefore is leaked
Measure larger, back seat type is that valve seat is increased on the basis of opening mechanism, valve plate and valve seat category hard sealing structure, leakage rate
Make moderate progress compared with opening structure, because valve body valve plate use welded-steel plate construction, precision controlling is poor, thus leakage rate still compared with
Greatly, still there is large effect to energy loss and environmental pollution.
Summary of the invention
For the utility model in view of the above-mentioned problems, providing a kind of low leakage low-load butterfly valve, the butterfly valve seal is reliable, effectively drops
Low leakage.
According to the technical solution of the utility model includes: a kind of low leakage low-load butterfly valve, it is characterised in that: including valve body, valve
In the valve opening of body rotation setting valve shaft, valve shaft, which is placed on the axis in body cavity, is arranged valve plate, the sealing structure at valve plate both ends with
The valve seat dynamic sealing of body cavity cooperates；The sealing structure includes the first sealing ring, sealing ring gasket, wherein the first sealing ring
It is set in the groove body formed on valve seat, groove body outer end is stretched out in the first sealing ring outer end, and sealing ring gasket, which is fixed on valve plate, to be leaned on
Nearly first sealing ring, one side surface, another side surface of valve plate are fixed with locking nut, sealing adjustment bolt and locking nut screw thread
It is cooperatively connected, the bolt end for sealing adjustment bolt is held out against in sealing ring pad on piece.
Correspond on the valve body at axis hole as a further improvement of the utility model, and be provided with condiment seat, valve shaft passes through
The setting of filler seat is worn, the second sealing ring of twice, shape between valve shaft surface and filler seat inner hole are set at filler seat on valve shaft
Circularize direction gap.
As a further improvement of the utility model, the valve plate end close to one side surface of valve seat be arranged the first concave surface,
Second concave surface, sealing ring gasket are fastenedly connected on the first concave surface, have gap between sealing ring gasket and the second concave surface.
The groove body on the valve seat is dovetail groove, the width of the first sealing ring as a further improvement of the utility model,
Dovetail groove is stretched out in the bottom surface of larger one end fitting and dovetail groove, the smaller one end of the width of the first sealing ring.
The utility model has the technical effect that the low leakage low-load butterfly valve of the utility model is primarily adapted for use in low pressure Jie
The flow of matter, pressure control.Have the characteristics that structure is simple and convenient to operate, is light-weight, commonly used in petroleum, chemical industry, metallurgy,
The automatic control of the industries such as power station and light industry and long-range control.Valve body valve plate uses welded-steel plate construction, and valve portion presses its structure
For special back seat type structure, the leakage grade of valve is improved, there is simple structure, light structure, the sky suitable for low-pressure state
The flow of gas or other gases, pressure control, are also applied for condition of high temperature gas.
Detailed description of the invention
Fig. 1 is traditional low-load valve Open architecture schematic diagram.
Fig. 2 is traditional low-load valve back seat type structural schematic diagram.
Fig. 3 is the utility model structure diagram.
Fig. 4 is partial enlarged view at M in Fig. 3.
Fig. 5 is the utility model filler partial structure diagram.
Fig. 6 is partial enlarged view at N in Fig. 5.
Specific embodiment
Specific embodiment of the present utility model is further described with reference to the accompanying drawing.
In Fig. 1 ~ 6, including valve seat 1, valve plate 2, the first concave surface 2-1, the second concave surface 2-2, sealing adjustment bolt 3, locking screw
Female 4, sealing ring gasket 5, the first sealing ring 6, the second sealing ring 7, valve shaft 8, circumferential direction gap 9, filler seat 10, valve body 11
Deng.
As shown in Fig. 1 ~ 6, the utility model is a kind of low leakage low-load butterfly valve, including valve body 11, the valve opening of valve body 11
Valve shaft 8 is arranged in middle rotation, and valve shaft 8 is placed in setting valve plate 2, the sealing structure and valve at 2 both ends of valve plate on the axis in 11 inner cavity of valve body
1 dynamic sealing of valve seat of 11 inner cavity of body cooperates；The sealing structure includes the first sealing ring 6, sealing ring gasket 5, wherein first is close
Seal ring 6 is set in the groove body formed on valve seat 1, and groove body outer end is stretched out in 6 outer end of the first sealing ring, and sealing ring gasket 5 is fixed on
Close to 6 one side surface of the first sealing ring on valve plate 2, another side surface of valve plate 2 is fixed with locking nut 4, sealing adjustment bolt 3 with
Locking nut 4 is threadedly engaged connection, and the bolt end of sealing adjustment bolt 3 is held out against on sealing ring gasket 5.
Correspond at axis hole on valve body 11 and be provided with condiment seat 10, valve shaft 8 is arranged through filler seat 10, close on valve shaft 8
The second sealing ring of twice 7 is set at filler seat 10, forms circumferential direction gap 9 between 10 inner hole of 8 surface of valve shaft and filler seat.
The first concave surface 2-1, the second concave surface 2-2 is arranged close to 1 one side surface of valve seat in 2 end of valve plate, and sealing ring gasket 5 fastens
It is connected on the first concave surface 2-1, there is gap between sealing ring gasket 5 and the second concave surface 2-2.
Groove body on valve seat 1 is dovetail groove, and the larger one end of the width of the first sealing ring 6 is bonded the bottom surface with dovetail groove, the
Dovetail groove is stretched out in the smaller one end of the width of one sealing ring 6.
The utility model product traditional butterfly valve using hard sealing structure, without sealing structure there are aiming at the problem that set
Meter realizes that at work, leakage rate, the bore of product can be effectively reduced in the soft sealing structure of the utility model product, product
For DN100 ~ DN2200, nominal pressure grade: ANSI150#, operating temperature range are 5 DEG C ~ 540 DEG C, and leakage rate grade reaches
ANSI Class Ⅳ。
Claims (4)
1. a kind of low leakage low-load butterfly valve, it is characterised in that: including valve body (11), valve is arranged in rotation in the valve opening of valve body (11)
Axis (8), valve shaft (8) are placed in setting valve plate (2), the sealing structure and valve body at valve plate (2) both ends on the axis in valve body (11) inner cavity
(11) valve seat (1) the dynamic sealing cooperation of inner cavity；The sealing structure includes the first sealing ring (6), sealing ring gasket (5), wherein
First sealing ring (6) is set in the groove body formed on valve seat (1), and groove body outer end, sealing ring are stretched out in the first sealing ring (6) outer end
Gasket (5) is fixed on valve plate (2) close to (6) one side surface of the first sealing ring, and valve plate (2) another side surface is fixed with locking screw
Female (4), sealing adjustment bolt (3) is threadedly engaged with locking nut (4) to be connect, and the bolt end of sealing adjustment bolt (3) is held out against
In on sealing ring gasket (5).
2. low leakage low-load butterfly valve as described in claim 1, it is characterised in that: correspond at axis hole on the valve body (11)
It is provided with filler seat (10), valve shaft (8) is arranged through filler seat (10), and twice are arranged on valve shaft (8) at filler seat (10)
Second sealing ring (7) forms circumferential direction gap (9) between valve shaft (8) surface and filler seat (10) inner hole.
3. low leakage low-load butterfly valve as described in claim 1, it is characterised in that: valve plate (2) end is close to valve seat (1)
The first concave surface (2-1), the second concave surface (2-2) is arranged in one side surface, and sealing ring gasket (5) is fastenedly connected in the first concave surface (2-1)
On, there is gap between sealing ring gasket (5) and the second concave surface (2-2).
4. low leakage low-load butterfly valve as described in claim 1, it is characterised in that: the groove body on the valve seat (1) is dovetail
Slot, the bottom surface of the width of the first sealing ring (6) larger one end fitting and dovetail groove, smaller one end of width of the first sealing ring (6)
Stretch out dovetail groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821369602.4U CN208793648U (en) | 2018-08-24 | 2018-08-24 | Low leakage low-load butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821369602.4U CN208793648U (en) | 2018-08-24 | 2018-08-24 | Low leakage low-load butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208793648U true CN208793648U (en) | 2019-04-26 |
Family
ID=66206810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821369602.4U Active CN208793648U (en) | 2018-08-24 | 2018-08-24 | Low leakage low-load butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208793648U (en) |
-
2018
- 2018-08-24 CN CN201821369602.4U patent/CN208793648U/en active Active
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant |