CN207814464U - A kind of tight envelope adjustment type three-eccentric-butterfly-valve - Google Patents
A kind of tight envelope adjustment type three-eccentric-butterfly-valve Download PDFInfo
- Publication number
- CN207814464U CN207814464U CN201721654906.0U CN201721654906U CN207814464U CN 207814464 U CN207814464 U CN 207814464U CN 201721654906 U CN201721654906 U CN 201721654906U CN 207814464 U CN207814464 U CN 207814464U
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- CN
- China
- Prior art keywords
- valve
- shaft sleeve
- valve rod
- mandril
- butterfly
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of tight envelope adjustment type three-eccentric-butterfly-valve, it include mainly valve body, valve board assembly and valve rod, the valve board assembly is set in the middle part of valve rod, the valve body is respectively installed with Upper shaft sleeve and Lower shaft sleeve with valve rod matching part, valve body lower end seals the affixed regulating mechanism that can adjust the valve rod axial position, it is characterized in that the regulating mechanism is by bottom cover, adjust mandril, the cover, locking nut, the compositions such as sealing ring, the adjusting mandril that the aluminium bronze makes, which runs through, to be screwed onto in the middle part of bottom cover, the upper end contradicts in the tapered centre hole of the valve rod lower end, make hexagonal prism shape in the lower end for adjusting mandril stretching bottom cover, adjusting mandril can be rotated with spanner to move axially with regulating valve stem, the Upper shaft sleeve, Lower shaft sleeve is graphite sliding shaft sleeve, advantageous effect caused by the utility model is：It can guarantee the permanent seal between valve plate valve seat, effectively reduce the requirement of actuator output torque.
Description
Technical field
The utility model belongs to valve technology field, more particularly to a kind of tight envelope adjustment type three-eccentric-butterfly-valve.
Background technology
Due to three-eccentric-butterfly-valve be by between valve plate and valve seat good wedge bevel-type coincide contact sealing realize tightly it is close
Envelope, have the characteristics that keying is rapid fast and small without friction, good seal performance, keying torque, in oil, chemical industry, metallurgy, electricity
It is used widely on the industrial pipelines such as power and municipal works, primarily serves fluid flow regulation and acted on cut-off.
But in use as time goes by, valve plate can be gradually with sealing surface of seat for the three-eccentric-butterfly-valve of the prior art
It wears, valve plate will appear under the effect of gravity moves down phenomenon, and influences the identical formedness between valve plate valve seat, to meeting
Reduce butterfly valve seal performance.Each manufacturing firm is all continuously improving its structure design and processing technology, its structure of gradual perfection with
Processing performance, to improve the permanent seal reliability of product.
Invention content
The purpose of the utility model is to overcome the deficiencies in the prior art, and valve rod axial direction position can be adjusted by providing one kind
It sets, is easier to maintain valve plate valve seat optimal seal state, the easy tight envelope adjustment type three-eccentric-butterfly-valve of actuator installation, dismounting.
The technical solution of the utility model is：A kind of tight envelope adjustment type three-eccentric-butterfly-valve, includes mainly valve body, valve
Board group part and valve rod, the valve board assembly are set in the middle part of valve rod, are used in combination multiple taper bolts to be fixed together, the valve body and valve
Bar matching part is respectively installed with Upper shaft sleeve and Lower shaft sleeve, and valve body lower end seals the affixed tune that can adjust the valve rod axial position
Save mechanism, it is characterized in that the regulating mechanism by bottom cover, adjust mandril, the cover, locking nut, sealing ring I, sealing ring II, interior
Hex screw is constituted with bolt, and through being screwed onto in the middle part of bottom cover, the upper end is contradicted in the valve rod lower end adjusting mandril
In tapered centre hole, hexagonal prism shape is made in the lower end for adjusting mandril stretching bottom cover, can be rotated with spanner and adjust mandril to adjust
Save valve rod axial movement.Locking nut is used for after adjusting valve rod axial position, and locking adjusts mandril to prevent it from pine occurs
It is dynamic.Sealing ring I, sealing ring II be respectively used between bottom cover and valve body, adjusts sealing between mandril and bottom cover.
Preferably, the adjusting mandril upper end be made it is hemispherical.Hemispherical head contradicts in the valve rod lower end
In heart bellmouth, self-conductance positive interaction between the two can be played, conducive to good contact to ensure degree of regulation.
Preferably, the adjusting mandril is made of QAL9-4 aluminium bronzes.QAL9-4 aluminium bronzes have excellent abrasive resistance,
And it will not be engaged with the valve rod of stainless steel.
Preferably, the Upper shaft sleeve, Lower shaft sleeve are graphite sliding shaft sleeves.Graphite sliding shaft sleeve has high temperature resistant, corrosion resistant
The excellent properties such as erosion, self-lubricating.
Advantageous effect caused by the utility model is：
1, an axial position regulating mechanism, when valve plate, sealing surface of seat are worn, valve are provided in valve rod lower end
Plate occurs under the effect of gravity to bottom offset and when influencing excellent sealing, can by adjusting adjusting mandril, by valve plate be adjusted to
The most preferably identical state of valve seat, to ensure the permanent seal between valve plate valve seat.
2, valve body and valve rod matching part are set with graphite sliding shaft sleeve, have high temperature resistant, corrosion-resistant, self-lubricating etc. excellent
Anisotropic energy, can reduce the frictional resistance suffered by worst hot case condition lower valve rod, reduce the requirement of actuator output torque.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Fig. 2 is the partial enlarged view in Fig. 1.
In figure：1-valve body, 2-Upper shaft sleeves, 3-valve core plate components, 4-valve rods, 5-taper bolts, 6-Lower shaft sleeves, 7-
Regulating mechanism, 71-bottom covers, 72-adjust mandril, 73-the covers, 74-locking nuts, 75-soket head cap screws, 76-sealings
Enclose that I, 77-sealing rings II, 78-bolts, 721-heads are hemispherical, 722-hexagonal prisms.
Specific implementation mode
Specific embodiment of the utility model is described further below in conjunction with the accompanying drawings.
In embodiment as shown in Figure 1, a kind of tight envelope adjustment type three-eccentric-butterfly-valve, includes mainly valve body 1, valve board assembly
3 and valve rod 4, the valve board assembly 3 is set in the middle part of valve rod, is used in combination multiple taper bolts 5 to be fixed together, the valve body and valve rod
Matching part is respectively installed with Upper shaft sleeve 2 and Lower shaft sleeve 6, and valve body lower end seals the affixed tune that can adjust the valve rod axial position
Save mechanism 7, it is characterized in that the regulating mechanism 7 by bottom cover 71, adjust mandril 72, the cover 73, locking nut 74, sealing ring I 76,
Sealing ring II 77, soket head cap screw 75 and bolt 78 are constituted, and the adjusting mandril 72 through being screwed onto in the middle part of bottom cover, support by the upper end
It touches in the tapered centre hole of the valve rod lower end, hexagonal prism shape 722 is made in the lower end for adjusting mandril stretching bottom cover, is used for
Adjusting mandril is rotated with spanner to move axially with regulating valve stem.Locking nut is used for after adjusting valve rod axial position, locking
Mandril is adjusted to prevent it from loosening.Sealing ring I, sealing ring II are respectively used between bottom cover and valve body, adjust mandril and bottom
Sealing between lid.
72 upper end of adjusting mandril is made hemispherical 721.Hemispherical head contradicts the center cone in the valve rod lower end
In shape hole, self-conductance positive interaction between the two can be played, conducive to good contact to ensure degree of regulation.
The adjusting mandril 72 is made of QAL9-4 aluminium bronzes.QAL9-4 aluminium bronzes have excellent abrasive resistance, and will not
It is engaged with the valve rod of stainless steel.
The Upper shaft sleeve 2, Lower shaft sleeve 6 use graphite sliding shaft sleeve.Graphite sliding shaft sleeve have high temperature resistant, it is corrosion-resistant, from
The excellent properties such as lubrication can reduce the frictional resistance suffered by worst hot case condition lower valve rod, reduce actuator output torque and want
It asks.
Claims (4)
1. a kind of tight envelope adjustment type three-eccentric-butterfly-valve, includes mainly valve body, valve board assembly and valve rod, the valve board assembly is arranged
In the middle part of valve rod, multiple taper bolts is used in combination to be fixed together, the valve body and valve rod matching part be respectively installed with Upper shaft sleeve with
Lower shaft sleeve, valve body lower end seals the affixed regulating mechanism that can adjust the valve rod axial position, it is characterized in that the regulating mechanism
It is made of bottom cover, adjusting mandril, the cover, locking nut, sealing ring I, sealing ring II, soket head cap screw and bolt, the adjusting
Through being screwed onto in the middle part of bottom cover, the upper end contradicts in the tapered centre hole of the valve rod lower end mandril, adjusts mandril and stretches out bottom
Make hexagonal prism shape in the lower end of lid.
2. a kind of tight envelope adjustment type three-eccentric-butterfly-valve according to claim 1, it is characterised in that：On the adjusting mandril
End is made hemispherical.
3. a kind of tight envelope adjustment type three-eccentric-butterfly-valve according to claim 1, it is characterised in that：The adjusting mandril is adopted
It is made of QAL9-4 aluminium bronzes.
4. a kind of tight envelope adjustment type three-eccentric-butterfly-valve according to claim 1, it is characterised in that：The Upper shaft sleeve, under
Axle sleeve is graphite sliding shaft sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721654906.0U CN207814464U (en) | 2017-12-03 | 2017-12-03 | A kind of tight envelope adjustment type three-eccentric-butterfly-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721654906.0U CN207814464U (en) | 2017-12-03 | 2017-12-03 | A kind of tight envelope adjustment type three-eccentric-butterfly-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814464U true CN207814464U (en) | 2018-09-04 |
Family
ID=63334912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721654906.0U Expired - Fee Related CN207814464U (en) | 2017-12-03 | 2017-12-03 | A kind of tight envelope adjustment type three-eccentric-butterfly-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207814464U (en) |
-
2017
- 2017-12-03 CN CN201721654906.0U patent/CN207814464U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180904 Termination date: 20201203 |