CN209067856U - It is a kind of with preventing valve rod from corroding and washing away the double eccentric butterfly valve of function - Google Patents
It is a kind of with preventing valve rod from corroding and washing away the double eccentric butterfly valve of function Download PDFInfo
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- CN209067856U CN209067856U CN201821439058.6U CN201821439058U CN209067856U CN 209067856 U CN209067856 U CN 209067856U CN 201821439058 U CN201821439058 U CN 201821439058U CN 209067856 U CN209067856 U CN 209067856U
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- valve rod
- butterfly
- butterfly plate
- valve body
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Abstract
The utility model relates to a kind of with the double eccentric butterfly valve for preventing valve rod from corroding and washing away function, in particular to butterfly valve apparatus field.The utility model includes valve body, valve seat, butterfly plate, valve rod, cylindrical cavity is equipped with inside butterfly plate, valve rod is through cylindrical cavity, valve rod and butterfly plate are fixed by pin, valve rod upper end is equipped with filler group, filler group is compressed by gland, and valve rod lower end is equipped with capping, and capping is fixed by screws on the valve body of lower end.It is long-term exposed easy in the medium because of the problem of corrosivity of medium itself causes stem structure to be damaged to influence butterfly valve service life that the utility model overcomes valve rod in the prior art.Valve rod whole is located in the cylindrical cavity of butterfly plate by the utility model; achieve the purpose that anticorrosion and protection against erosion, sealing is achieved the purpose that by filler group and gland, be protected valve rod can normal operation but also; the problem of reducing corrosion and washing away, improves the service life of butterfly valve.
Description
Technical field
It is the utility model relates to butterfly valve apparatus field, in particular to a kind of with pair for preventing valve rod from corroding and washing away function
Eccentric-butterfly-valve.
Background technique
Butterfly valve is called flap valve, is mainly made of valve body, valve rod, butterfly valve, butterfly plate and sealing ring.Butterfly valve can be used for controlling sky
The flowing of the various types fluids such as gas and water, steam, various corrosive medias, mud, oil product, liquid metal and radiating medium.
In butterfly valve stem structure used at present, the exposed structure in the medium of valve rod is mostly used, when such valve rod application
In powdered granule or corrosive media, in fact it could happen that valve rod is because powdered granule high speed washes away the damage with corrosive media, most
It causes stem structure size to become smaller or deform the situation of fracture eventually, causes valve that can not seal or stuck phenomenon.Because of valve
Not being available causes entire butterfly valve service life to shorten.Therefore, the performance of flushing of butterfly valve valve rod and Corrosion Protection, which become, determines
An important factor for butterfly valve service life, it is therefore desirable to solve the problems, such as this using better scheme.
Utility model content
(1) technical problems to be solved
The utility model overcomes the long-term exposed corrosion being easy in the medium because of medium itself of valve rod in the prior art
Property cause stem structure be damaged to influence butterfly valve service life the problem of.The utility model is in order to solve the technical problem
It provides a kind of with the double eccentric butterfly valve for preventing valve rod from corroding and washing away function.
(2) technical solution
In order to solve the above-mentioned technical problem, the utility model provide it is such a have prevent valve rod from corroding and washing away function
The double eccentric butterfly valve of energy, including valve body, valve seat, butterfly plate, valve rod, the valve rod axle center had both been deviateed the butterfly plate center, had been also offset from
The inner wall at the valve body center, the valve body is equipped with and the matched valve seat of the butterfly plate, valve seat side outer end card
It connects and fixes one piece of pressing ring, the butterfly plate is in the form of annular discs to be located at the valve inner, is equipped with cylindrical cavity, the valve inside the butterfly plate
Bar is fixed through the cylindrical cavity, the valve rod and the butterfly plate by pin, and the valve rod upper end is cased with retaining ring, the valve rod
Lower end and the valve body contact part are equipped with axle sleeve；
The valve rod one is pierced by the valve body, and the other end of the valve rod is located at the valve inner, and the valve rod is worn
The outside contact portion of the valve body is equipped with Packing seat out, filler group is equipped with above the Packing seat, the filler group is by filling out
Expect that gland compresses, the gland is bolted on the valve body；
The valve rod lower end is additionally provided with capping, and the capping is fixed by screws on the valve body of the lower end.
Preferably, it is fixedly connected between the valve rod and the butterfly plate by three pins, three pins and institute
It states and is fixed between butterfly plate by welding manner.
Preferably, the quantity of the retaining ring is two panels, and retaining ring described in two panels is located at valve body described in upper end and described
Valve body described in butterfly plate gap section and lower end and the butterfly plate gap section.
Preferably, cover pad is equipped between the capping and the valve body.
Preferably, the material of the valve rod is stainless steel material, and the material of the filler group is flexible graphite material.
(3) beneficial effect
The support lower margin that the utility model overcomes valve in the prior art is directly welded on valve body, this welding side
The disadvantage that formula causes production efficiency too low.The utility model compared with the existing technology, has the advantage that the utility model by valve
Bar is integrally wrapped in the material of butterfly plate, prevents corrosivity and graininess medium directly washing away to valve rod, medium is in pipeline stream
It is to be directly washed on butterfly plate when logical, is only corroded or can just start in the case where erosion inside corrosion or erosion in butterfly plate
Valve rod；The utility model is sold by will be arranged between butterfly plate and valve rod, plays the purpose for preventing valve rod from blowing out；The utility model exists
Side above axle sleeve sets filler group and gland improves the sealing performance of valve body, so that the protection that valve rod is completed, increases
The service life for having added valve rod and entire butterfly valve, reduces maintenance cost, increases the purpose of economic benefit.
Detailed description of the invention
Fig. 1 is the cross-sectional view that the utility model has the double eccentric butterfly valve for preventing valve rod from corroding and washing away function；
Fig. 2 is the external structure schematic diagram of Fig. 1.
Appended drawing reference are as follows: 1- valve body, 2- pressing ring, 3- valve seat, 4- butterfly plate, 5- valve rod, 6- axle sleeve, 7- filler group, 8- filler
Gland, 9- pin, 10- bolt, 11- retaining ring, 12- Packing seat, 13- capping, 14- cover pad.
Specific embodiment
The utility model is further described in conjunction with the accompanying drawings and embodiments.
In the description of the present invention, it should be understood that term " longitudinal direction ", " transverse direction ", "vertical", "horizontal",
The orientation or positional relationship of the instructions such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outside" be based on
Orientation or positional relationship shown in the drawings is merely for convenience of description the utility model, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
As shown in Figs. 1-2, described in the utility model a kind of with the double eccentric butterflies for preventing valve rod from corroding and washing away function
Valve, including valve body 1, valve seat 3, butterfly plate 4, valve rod 5,5 axle center of valve rod had both deviateed 4 center of butterfly plate, and had also offset from the valve
1 center of body, the inner wall of the valve body 1 are equipped with and the matched valve seat 3 of the butterfly plate 4,3 side outer end of the valve seat clamping
One piece of pressing ring 2 is fixed, the butterfly plate 4 is in the form of annular discs to be located inside the valve body 1, and cylindrical cavity is equipped with inside the butterfly plate 4, described
Valve rod 5 is fixed by pin 9 through the cylindrical cavity, the valve rod 5 and the butterfly plate 4, and 5 upper end of valve rod is cased with retaining ring
11,5 lower end of valve rod and 1 contact portion of the valve body are equipped with axle sleeve 6；The valve rod 5 one is pierced by the valve body 1, institute
The other end for stating valve rod 5 is located inside the valve body 1, and the outside contact portion that the valve rod 5 is pierced by the valve body 1 is equipped with filler
Pad 12 is equipped with filler group 7 above the Packing seat 12, and the filler group 7 is compressed by gland 8, and the gland 8 is logical
Bolt 10 is crossed to be fixed on the valve body 1；5 lower end of valve rod is additionally provided with capping 13, and the capping 13 is fixed by screws in
On the valve body 1 of the lower end.
In order to effectively improve protection against erosion and etch-proof performance, the utility model further includes the quantity of the retaining ring 11
For two panels, retaining ring 11 described in two panels is located at valve body 1 described in valve body 1 described in upper end and 4 gap section of the butterfly plate and lower end
With 4 gap section of butterfly plate, the material of the valve rod 5 is stainless steel material, and the material of the filler group 7 is soft graphite
Material；Prevent blowing chikung energy to improve, the utility model devises between the valve rod 5 and the butterfly plate 4 through three institutes
It states pin 9 to be fixedly connected, be fixed between three pins 9 and the butterfly plate 4 by welding manner；The material of the valve rod 5 is
Stainless steel material, the material of the filler group 7 are flexible graphite material.
Wherein, the filler group 7 in the utility model belongs to the sealing element between valve rod 5 and valve body 1, increases valve rod 5 and valve
Leakproofness between body 1, butterfly plate 4 are equipped with a cylindrical cavity, and it is exactly butterfly plate that valve rod 5 passes through and through cylindrical cavity in simple terms
4 are wrapped in valve rod 5 inside of butterfly plate 4.In the prior art, medium generally directly contacts valve rod 5, and rushes to valve rod 5
Brush and corrosion；But the medium in the present invention, washing away and corroding all is intercepted by the external of butterfly plate 4, unless butterfly plate 4 is complete
Otherwise full corrosion can not be corroded and be washed away to internal valve rod 5, this way high degree protects 5 structure of valve rod
Integrality；It is also connected by pin 9 between valve rod 5 and butterfly plate 4, prevents valve rod 5 from being blown winged.
Embodiment described above is only expressed to the preferred embodiments of the present invention, and description is more specific and detailed
Carefully, but the utility model is not limited only to these embodiments, it is noted that for those of ordinary skill in the art.
Under the premise of without departing from the utility model aims, carried out by any improvement all fall within the protection scope of the utility model.
Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (5)
1. a kind of with preventing valve rod from corroding and washing away the double eccentric butterfly valve of function, including valve body (1), valve seat (3), butterfly plate (4),
Valve rod (5), it is characterised in that: the butterfly plate (4) center had both been deviateed in valve rod (5) axle center, was also offset from the valve body (1)
The inner wall of the heart, the valve body (1) is equipped with and the matched valve seat (3) of the butterfly plate (4), valve seat (3) the side outer end
One piece of pressing ring (2) is connected and fixed, the butterfly plate (4) valve body (1) in the form of annular discs that is located at is internal, sets inside the butterfly plate (4)
There is cylindrical cavity, the valve rod (5) is fixed through the cylindrical cavity, the valve rod (5) and the butterfly plate (4) by pin (9), institute
It states valve rod (5) upper end to be cased with retaining ring (11), valve rod (5) lower end and the valve body (1) contact portion are equipped with axle sleeve (6)；
The valve rod (5) one is pierced by the valve body (1), and the other end of the valve rod (5) is located at the valve body (1) inside, institute
It states valve rod (5) and is pierced by the outside contact portion of the valve body (1) and be equipped with Packing seat (12), be equipped with and fill out above the Packing seat (12)
Material group (7), the filler group (7) are compressed by gland (8), and the gland (8) is fixed on institute by bolt (10)
It states on valve body (1)；
Valve rod (5) lower end is additionally provided with capping (13), and the capping (13) is fixed by screws in the valve of the lower end
On body (1).
2. according to claim 1 a kind of with preventing valve rod from corroding and washing away the double eccentric butterfly valve of function, feature exists
In: it is fixedly connected between the valve rod (5) and the butterfly plate (4) by three pins (9), three pins (9) and institute
It states and is fixed between butterfly plate (4) by welding manner.
3. according to claim 1 a kind of with preventing valve rod from corroding and washing away the double eccentric butterfly valve of function, feature exists
In: the quantity of the retaining ring (11) is two panels, and retaining ring (11) described in two panels is located at valve body described in upper end (1) and the butterfly
Valve body (1) described in plate (4) gap section and lower end and the butterfly plate (4) gap section.
4. according to claim 1 a kind of with preventing valve rod from corroding and washing away the double eccentric butterfly valve of function, feature exists
In: cover pad (14) are equipped between the capping (13) and the valve body (1).
5. according to claim 1 a kind of with preventing valve rod from corroding and washing away the double eccentric butterfly valve of function, feature exists
In: the material of the valve rod (5) is stainless steel material, and the material of the filler group (7) is flexible graphite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821439058.6U CN209067856U (en) | 2018-09-04 | 2018-09-04 | It is a kind of with preventing valve rod from corroding and washing away the double eccentric butterfly valve of function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821439058.6U CN209067856U (en) | 2018-09-04 | 2018-09-04 | It is a kind of with preventing valve rod from corroding and washing away the double eccentric butterfly valve of function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209067856U true CN209067856U (en) | 2019-07-05 |
Family
ID=67091633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821439058.6U Active CN209067856U (en) | 2018-09-04 | 2018-09-04 | It is a kind of with preventing valve rod from corroding and washing away the double eccentric butterfly valve of function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209067856U (en) |
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2018
- 2018-09-04 CN CN201821439058.6U patent/CN209067856U/en active Active
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