CN207406785U - A kind of double eccentric butterfly valve - Google Patents
A kind of double eccentric butterfly valve Download PDFInfo
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- CN207406785U CN207406785U CN201721217575.4U CN201721217575U CN207406785U CN 207406785 U CN207406785 U CN 207406785U CN 201721217575 U CN201721217575 U CN 201721217575U CN 207406785 U CN207406785 U CN 207406785U
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- hole
- valve
- valve rod
- double eccentric
- auxiliary
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Abstract
The utility model discloses a kind of double eccentric butterfly valve, including valve body, main valve stem, auxiliary valve rod and butterfly plate；Two connection boss are symmetrically provided on the joint face of butterfly plate, the connection boss described in two deviates the center line of the butterfly plate and the center of gravity of butterfly plate, to form double eccentric structures；Blind hole is had on the opposite direction on connection boss described in two, one of blind hole is main valve stem connecting hole, another is auxiliary valve rod connecting hole；A blind hole is equipped with as auxiliary valve rod mounting hole with the corresponding position of auxiliary valve rod connecting hole on valve body；Auxiliary valve rod connecting hole and auxiliary valve rod mounting hole are inserted into the both ends of the auxiliary valve rod respectively, and formation is rotatably connected；The bottom of the auxiliary valve rod mounting hole mounting hole is provided with several thrust bearings, the thrust bearing is connected with the auxiliary valve rod being inserted.The utility model has many advantages, such as that sealing is firm, main valve stem is easy to repair.
Description
Technical field
The utility model belongs to valve technology field, and in particular to a kind of double eccentric butterfly valve.
Background technology
As the continuous development of China's economy, the raising of living standards of the people, domestic water and industrial water will be passed constantly
Increase.Rural urbanization, the transformation of the cities and towns network of rivers, waterworks construction, city direct drinking water, waste water control are more and more, people
It is stringenter for the purification requirement of drinking water.Double eccentric butterfly valve is used for realizing pipe-line system break-make and flow control as a kind of
Component, obtain applying extremely widely in many fields such as oil, chemical industry, metallurgy, water power.
Double eccentric butterfly valve is a kind of high-performance butterfly valve, is primarily adapted for use in water factory, power plant, steel mill's smelting, chemical industry, water source work
The Xi Tong Give such as journey, city water diversion system, sewage disposal, environmental facility construction drainings are used, and are particularly suitable for water pipe road, as
It adjusts and equipment use of shutting off is compared with centre-pivoted butterfly valve, double eccentric butterfly valve is more resistant to high pressure, longer life expectancy, and stability is good.And other
Valve is compared, and bore is bigger, and material is lighter, cost just lower with uniform pressure, identical latus rectum gate valve compared with, weight can subtract
It is light by 40~50%.
Double eccentric butterfly valve because its structure length is short, light-weight, long lifespan, low cost due to be widely used in oil, chemical industry,
The industries such as ship and electric power are the main products that butterfly valve is applied in the market, in addition, compared with other metal hard-sealing modes,
Soft seal form enhances sealing performance, reduces the difficulty of processing of valve body butterfly plate, and cost also decreases.The knot of double bias
Structure enable valve opened after butterfly plate depart from valve seat rapidly, significantly eliminate the unnecessary of butterfly plate and valve seat and excessively squeeze
Pressure scrapes phenomenon, alleviates unlatching resistance away from reducing abrasion, improve service life.Due to more than various advantages, plant double inclined
Heart butterfly valve is industrially more and more widely used.
However, the auxiliary valve rod of existing double eccentric butterfly valve is arranged on the bottom of valve body, cut with scissors between butterfly plate using pin hole
Mode is connect, in long-time service, due to getting rusty or impurity deposits to the bottom of pin hole, the resistance of valve opening and closing can be increased, also can
Increase abrasion.Although existing double eccentric butterfly valve using soft seal by the way of sealing effect it is preferable, due to insufficient strength, compared with
It is fragile.In addition, it is not easy to repair using being fixedly connected between existing main valve stem and butterfly plate.
Utility model content
For deficiencies of the prior art, the utility model provides a kind of double eccentric butterfly valve, it is intended to solve present
Double eccentric butterfly valve sealing cracky, the technical problems such as the inconvenient repair of main valve stem.
To achieve these goals, the technical solution adopted in the utility model is as follows：
A kind of double eccentric butterfly valve, including valve body, main valve stem, auxiliary valve rod and butterfly plate；The one side of the butterfly plate is sealing surface, separately
One is joint face；Two connection boss are symmetrically provided on the joint face of butterfly plate, the connection boss described in two deviates
The center line of the butterfly plate and the center of gravity of butterfly plate, to form double eccentric structures；Divide on the opposite direction on connection boss described in two
Blind hole is not provided with, and one of blind hole is main valve stem connecting hole, another is auxiliary valve rod connecting hole；Connect on valve body with main valve stem
It connects the corresponding position in hole and offers through hole through valve body, one end of the main valve stem is located at outside valve body, and the other end is worn
It crosses the through hole and is inserted into main valve lever attachment hole；A blind hole is equipped with as secondary with the corresponding position of auxiliary valve rod connecting hole on valve body
Valve rod mounting hole；Auxiliary valve rod connecting hole and auxiliary valve rod mounting hole are inserted into the both ends of the auxiliary valve rod respectively, and formation is rotatably connected；
Several thrust bearings, the thrust bearing and the auxiliary valve rod being inserted are provided in the bottom of the auxiliary valve rod mounting hole
Connection.
Further, the auxiliary valve rod mounting hole is through hole, is provided with valve deck on the valve body of the through hole connectivity part, the valve
Lid is connected with valve seal, to seal to form blind hole structure one end of the through hole.
Further, several connection through holes are provided on the valve deck, are offered on valve body with being connected through hole relative position
Several tapped blind holes are connected with for valve deck with valve body screw thread.
Further, the section of the main valve lever attachment hole is regular hexagon, and main valve stem insertion main valve stem connects
The section of the one end in hole is also regular hexagon.
Further, one end that the main valve stem is located at outside valve body is opened there are one the avette through hole vertical with its axis, is used
It is connected in driving device.
Further, the edge of the sealing surface of the butterfly plate is provided with ring packing washer, and the ring packing washer is along its week
To being equably provided with several ratchets.
Further, the ratchet is hinged on the ring packing washer, can be rotated along the axis direction of valve body.
Further, the ratchet is arranged on the inner ring surface of the ring packing washer, a diameter of ring packing
The 1/4 of the width of washer.
Further, threaded hole is offered on the sealing surface of the ring packing washer and the butterfly plate, for the two
It is formed and is threadedly coupled.
Further, the material of the main valve stem and auxiliary valve rod is brass.
Compared with prior art, the utility model has the advantages that：
1st, the auxiliary valve rod of the utility model and the contact position of valve body are provided with thrust bearing, so in long-term use, sink
Product object can be deposited on the lower section of bearing, can efficiently reduce abrasion, prolong the service life.
2nd, several ratchets are provided on the seal washer of the utility model, change the sealing means between butterfly plate and valve body
For soft or hard combination, while ensure that sealing effect, also increase intensity and fasten power, which not only improves sealing effect,
Can also effectively it prolong the service life.
3rd, use and be detachably connected between the main valve stem and butterfly plate of the utility model, easy to repair and replacement.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the butterfly plate structure diagram of the utility model；
Fig. 3 is the main valve stem structure diagram of the utility model；
Fig. 4 is the structure diagram of the seal washer of the utility model.
In attached drawing：1-valve body；11-valve deck；2-main valve stem；21-avette through hole；3-auxiliary valve rod；31-thrust bearing
31；4-butterfly plate；41-ring packing washer；410-ratchet；411-sealing ring retaining ring；42-main valve lever attachment hole；43—
Auxiliary valve rod connecting hole.
Specific embodiment
The utility model is described in further detail with reference to specific embodiment.
As shown in Figs 1-4, a kind of double eccentric butterfly valve, including valve body 1, main valve stem 2, auxiliary valve rod 3 and butterfly plate 4；The butterfly plate 4
One side for sealing surface, another is joint face；It is symmetrically provided with two connection boss on the joint face of butterfly plate 4, two
The connection boss deviates the center of gravity of the center line and butterfly plate 4 of the butterfly plate 4, to form double eccentric structures；Connection described in two
Blind hole is had on opposite direction on boss, one of blind hole is main valve stem connecting hole 42, another connects for auxiliary valve rod
Connect hole 43；On valve body 1 through hole through valve body 1, the main valve are offered with 42 corresponding position of main valve lever attachment hole
One end of bar 2 is located at outside valve body 1, and the other end is through the through hole and is inserted into main valve lever attachment hole 42；On valve body 1 with auxiliary valve rod
43 corresponding position of connecting hole is equipped with a blind hole as auxiliary valve rod mounting hole；Secondary valve is inserted at the both ends of the auxiliary valve rod 3 respectively
Lever attachment hole 43 and auxiliary valve rod mounting hole, formation are rotatably connected；It is characterized in that, in the bottom of the auxiliary valve rod mounting hole
Several thrust bearings 31 are provided with, the thrust bearing 31 is connected with the auxiliary valve rod 3 being inserted.
It is relatively reliable in order to install main valve stem 2, auxiliary valve rod 3, it is also had on two connection boss and main valve stem
Connecting hole 42 and auxiliary valve rod connecting hole 43 be vertical and the threaded hole that connects.So can use screw further fix main valve stem 2,
Auxiliary valve rod 3.
As an optimization, the auxiliary valve rod mounting hole is through hole, and valve deck is provided on the valve body 1 of the through hole connectivity part
11, which is tightly connected with valve body 1, to seal to form blind hole structure one end of the through hole.
As further optimization, several connection through holes are provided on the valve deck 11, it is opposite with connection through hole on valve body 1
Position offers several tapped blind holes, is threadedly coupled with for valve deck 11 with valve body 1.
As an optimization, the section of the main valve lever attachment hole 42 is regular hexagon, and the main valve stem 2 is inserted into main valve stem
The section of one end of connecting hole 42 is also regular hexagon.
As further optimization, one end that the main valve stem 2 is located at outside valve body 1 open there are one the ovum vertical with its axis
Shape through hole 21, for being connected with driving device.
As an optimization, the edge of the sealing surface of the butterfly plate 4 is provided with ring packing washer 41, the ring packing washer 41
Circumferentially several ratchets 410 are equably provided with along it.
As further optimization, the ratchet 410 is hinged on the ring packing washer 41, can be along valve body 1
Axis direction rotates.
As further optimization, the ratchet 410 is arranged on the inner ring surface of the ring packing washer 41, a diameter of
The 1/4 of the width of the ring packing washer 41.
As further optimization, screw thread is offered on the sealing surface of the ring packing washer 41 and the butterfly plate 4
Hole is threadedly coupled so that the two is formed.During using being threadedly coupled, several washers can be covered on trip bolt as sealing ring
Retaining ring 411.
In addition, annular groove is equipped with 41 corresponding position of ring packing washer on butterfly plate 4, it is close for installing annular
Seal washer 41.
As further optimization, in order to corrode, prolong the service life, the material of the main valve stem 2 and auxiliary valve rod 3 is
Brass.In addition, the part in main valve stem 2 and auxiliary valve rod 3 in valve body 1, can also be arranged several sealant rubber rings, with partition
Its contact with fluid in valve.Routinely, the outside of main valve stem 2 and auxiliary valve rod 3 is cased with axle sleeve.
It is to illustrate the utility model example that above-described embodiment of the utility model, which is only, and is not to this reality
With the restriction of new embodiment.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other various forms of variations and variation.Here all embodiments can not be exhaustive.It is every to belong to this reality
With new technical solution changes and variations that derived from still in the row of the scope of protection of the utility model.
Claims (10)
1. a kind of double eccentric butterfly valve, including valve body, main valve stem, auxiliary valve rod and butterfly plate；The one side of the butterfly plate is sealing surface, another
A is joint face；Two connection boss are symmetrically provided on the joint face of butterfly plate, the connection boss described in two deviates should
The center line of butterfly plate and the center of gravity of butterfly plate, to form double eccentric structures；On the opposite direction on connection boss described in two respectively
Blind hole is provided with, one of blind hole is main valve stem connecting hole, another is auxiliary valve rod connecting hole；It is connected on valve body with main valve stem
The corresponding position in hole offers the through hole through valve body, and one end of the main valve stem is located at outside valve body, and the other end passes through
The through hole is simultaneously inserted into main valve lever attachment hole；A blind hole is equipped with as secondary valve with the corresponding position of auxiliary valve rod connecting hole on valve body
Bar mounting hole；Auxiliary valve rod connecting hole and auxiliary valve rod mounting hole are inserted into the both ends of the auxiliary valve rod respectively, and formation is rotatably connected；Its
It is characterized in that, several thrust bearings is provided in the bottom of the auxiliary valve rod mounting hole, the thrust bearing is with being inserted into it
In auxiliary valve rod connection.
2. double eccentric butterfly valve according to claim 1, which is characterized in that the auxiliary valve rod mounting hole is through hole, at this
Valve deck is provided on the valve body of through hole connectivity part, which is connected with valve seal, to be formed one end of the through hole to be sealed
Blind hole structure.
3. double eccentric butterfly valve according to claim 2, which is characterized in that several connection through holes are provided on the valve deck,
Several tapped blind holes are offered with being connected through hole relative position on valve body, are connected with for valve deck with valve body screw thread.
4. double eccentric butterfly valve according to claim 1, which is characterized in that the section of the main valve lever attachment hole is positive six
Side shape, the section of one end of main valve stem insertion main valve lever attachment hole is also regular hexagon.
5. double eccentric butterfly valve according to claim 4, which is characterized in that open one end that the main valve stem is located at outside valve body
There are one the avette through hole vertical with its axis, for being connected with driving device.
6. double eccentric butterfly valve according to claim 1, which is characterized in that the edge of the sealing surface of the butterfly plate is provided with ring
Shape seal washer, the ring packing washer are circumferentially equably provided with several ratchets along it.
7. double eccentric butterfly valve according to claim 6, which is characterized in that the ratchet is hinged on the Gask-O-Seal
On circle, it can be rotated along the axis direction of valve body.
8. double eccentric butterfly valve according to claim 6, which is characterized in that the ratchet is arranged on the ring packing washer
Inner ring surface on, the 1/4 of the width of a diameter of ring packing washer.
9. double eccentric butterfly valve according to claim 6, which is characterized in that the ring packing washer and the butterfly plate
Threaded hole is offered on sealing surface, is threadedly coupled so that the two is formed.
10. according to any double eccentric butterfly valves of claim 1-9, which is characterized in that the main valve stem and auxiliary valve rod
Material is brass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721217575.4U CN207406785U (en) | 2017-09-21 | 2017-09-21 | A kind of double eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721217575.4U CN207406785U (en) | 2017-09-21 | 2017-09-21 | A kind of double eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207406785U true CN207406785U (en) | 2018-05-25 |
Family
ID=62406238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721217575.4U Active CN207406785U (en) | 2017-09-21 | 2017-09-21 | A kind of double eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207406785U (en) |
-
2017
- 2017-09-21 CN CN201721217575.4U patent/CN207406785U/en active Active
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