CN207527064U - All-metal sealing spherical valve with purging structure - Google Patents
All-metal sealing spherical valve with purging structure Download PDFInfo
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- CN207527064U CN207527064U CN201721417746.8U CN201721417746U CN207527064U CN 207527064 U CN207527064 U CN 207527064U CN 201721417746 U CN201721417746 U CN 201721417746U CN 207527064 U CN207527064 U CN 207527064U
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- valve
- sealing
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Abstract
The utility model is related to valve technology fields, particularly disclose a kind of all-metal sealing spherical valve of band purging structure, including valve body, valve rod, valve plate, stack valve seat and handle, handle is linked with valve rod by turbine apparatus, the valve plate is in eccentric setting relative to valve rod, stack valve seat includes sealing against each other the first sealing pair of cooperation, second sealing pair and third sealing pair, first sealing pair, second sealing pair and third sealing pair are each attached on valve body, first sealing pair forms sealed set with valve plate, first sealing pair is towards the end face of valve plate to be obliquely installed, the surrounding side of valve plate and the first sealing secondary sealing is cambered surface, scavenging conduit is provided in the medium channel of the valve body, it is provided on scavenging conduit towards the purge hole at the sealing of stack valve seat and valve plate.Using the above structure, it provides that a kind of sealing effect is good, can effectively remove the dust stratification on valve seat, simple in structure, the all-metal sealing spherical valve of the band purging structure of service life length.
Description
Technical field
The utility model is related to valve technology field, particularly a kind of all-metal sealing spherical valve of band purging structure.
Background technology
Ball face sealing butterfly valve is that opening and closing element is driven by valve rod, and the valve to rotate around ball valve axis, band purging knot
The ball valve of structure is widely used in chemical field, and primary structure includes valve body, valve seat, valve rod, valve deck, valve plate, filler, filler
The components such as gland and handle after valve opening, blow down the valve seat of valve body with gas, and the residual cleaned in valve is miscellaneous
The purpose of matter, realization prevents the sealing surface of valve body to be scratched, influence leakproofness.
At present, ball valve obtained in engineering it is larger promote the use of, but soft seals such as polytetrafluoroethylene (PTFE), rubber and nylon
Valve seat is not suitable for high-temperature medium, and is not suitable for fire-type valve, so the use scope of ball face sealing butterfly valve is limited, it
Improve the reliability of ball valve and technical parameter, prolong the service life, using metal-seated be the development of ball face sealing butterfly valve must
Right trend.
Invention content
For overcome the deficiencies in the prior art, it is good that the utility model provides a kind of sealing effect, can effectively remove valve seat
On dust stratification, it is simple in structure, service life length band purging structure all-metal sealing spherical valve.
To achieve these goals, the technical solution adopted in the utility model is：A kind of all-metal of band purging structure is close
Spherical valve is sealed, including valve body, valve rod, valve plate, stack valve seat and handle, handle is linked with valve rod by turbine apparatus, the valve
Relative to valve rod in eccentric setting, stack valve seat includes sealing against each other the first sealing pair, the second sealing pair and third of cooperation plate
Sealing pair, the first sealing pair, the second sealing pair and third sealing pair are each attached on valve body, and the first sealing pair forms close with valve plate
Envelope setting, first sealing pair are to be obliquely installed towards the end face of valve plate, the surrounding side of valve plate and the first sealing secondary sealing
For cambered surface, scavenging conduit is provided in the medium channel of the valve body, is provided on scavenging conduit towards the close of stack valve seat and valve plate
Purge hole at envelope.
In above-mentioned technical proposal, the first sealing pair end face be obliquely installed and the cambered surface of valve plate surrounding side setting be in order to
Improve the leakproofness of valve plate and stack valve seat, the whole end face of stack valve seat is in cone, and valve plate is into hyperboloid cake type butterfly plate, valve
Plate is contacted with the contact surface of stack valve seat close to line, can not only improve leakproofness in this way, avoids causing due to surface irregularity close
The situation for sealing effect difference occurs, and reduces the machining accuracy of stack valve seat, and stack valve seat is metal hard-sealing, and application range is wider,
Applicable temperature range is also wider, and purge hole is uniformly distributed along the circumferential direction of scavenging conduit center line, and purge hole face stack valve seat
With the junction of valve plate, the effective dust stratification for removing stack valve seat bottom prevents dust stratification to be adhered with the first sealing pair, influences to seal
Effect, simple in structure, service life is long.
As the further setting of the utility model, the correspondence both sides of the scavenging conduit are connected with ventilation duct, ventilation duct with
Scavenging conduit connection is set, and boring cover is provided on the port of the ventilation duct.
In above-mentioned technical proposal, at least one ventilation duct is connect with external blower device, when needing cleaning, makes scavenging conduit
Interior ventilation, wind out blow to stack valve seat and valve plate out of purge hole, and two ventilation ducts can be divided into blast pipe and discharge pipe, keep away
Exempt from wind and all stay in medium channel and can not discharge, the setting of boring cover is that the booties such as dust enter in scavenging conduit in order to prevent, is avoided
Valve inner is contaminated, simple in structure, keeps health.
As the further setting of the utility model, set between the inner wall of the medium channel and the first sealing pair peripheral surface
Being equipped with mutual cooperation prevents the limited shoulder rank of the first sealing pair movement and positive stop lug boss, the second sealing pair to be set in the first sealing pair
Peripheral surface on, the second sealing pair is abutted with the outside of positive stop lug boss, and third sealing pair lid is located on the first sealing pair and with
Two sealing pairs abut, and the trim ring abutted therewith is provided on the outside of the third sealing pair, and stack valve seat forms removable with valve body
Unload setting.
In above-mentioned technical proposal, limited shoulder rank forms limiting cooperation with positive stop lug boss, avoids the first sealing pair in trim ring
Squeeze it is lower shift, the setting of the second sealing pair is the inner wall sealing in order to make the first sealing pair and valve body, by limited shoulder rank with
The cooperation of positive stop lug boss, the second sealing pair and the first sealing pair with composition sealing cooperation in circumferential direction, pass through trim ring radially
Extruding make third sealing pair and the first sealing pair and the second sealing pair forms sealing cooperation, during dismounting, trim ring need to only be torn open
Under, you can stack valve seat is removed, it is simple in structure, it is convenient for changing, prolongs the service life.
As the further setting of the utility model, the opposite face of the positive stop lug boss and the second sealing pair is to be mutually adapted
Inclined surface, be provided with the groove being adapted to the outer end of the first sealing pair, the outer end of the first sealing pair on third sealing pair
It is embedded in the groove.
In above-mentioned technical proposal, the setting of inclined surface is in order to which the first sealing pair and second is made to seal the tighter of secondary sealing
Close, the section l-shaped of groove, third sealing pair is the equal of to be set on the first sealing pair, is radially and axially had
Sealing effect, mitigate sealing pair between pull problem, avoid it is stuck and deformation.
As the further setting of the utility model, the valve rod includes upper valve rod and lower valve rod, upper valve rod and lower valve rod
It is connected by valve plate, Lower shaft sleeve and plain thrust bearing is provided between lower valve rod and valve body, is set between upper valve rod and valve body
There are filler and gland.
In above-mentioned technical proposal, valve rod is facilitated to rotate, avoid generating gap between valve rod and valve body, cause the feelings such as leakage
Condition, it is simple in structure, it is easy for installation.
The utility model is further described below in conjunction with the accompanying drawings.
Description of the drawings
Attached drawing 1 is the utility model specific embodiment appearance diagram；
Attached drawing 2 is the utility model specific embodiment structure sectional view；
Attached drawing 3 is the partial enlarged view of attached drawing 2；
Attached drawing 4 is the partial enlarged view of attached drawing 2；
Attached drawing 5 is the partial enlarged view of attached drawing 2；
Attached drawing 6 is the utility model specific embodiment structure sectional view.
Specific embodiment
As shown in figures 1 to 6, a kind of all-metal sealing spherical valve of band purging structure wraps specific embodiment of the utility model
Valve body 1, valve rod 2, valve plate 3, stack valve seat 4 and handle 5 are included, handle 5 is linked with valve rod 2 by turbine apparatus, 3 phase of valve plate
For valve rod 2 in eccentric setting, stack valve seat 4 includes sealing against each other the first sealing pair 41 of cooperation, the second sealing pair 42 and the
Three sealing pairs 43, the first sealing pair 41, the second sealing pair 42 and third sealing pair 43 are each attached on valve body 1, the first sealing pair
41 form sealed set with valve plate 3, first sealing pair 41 towards the end face 411 of valve plate 3 to be obliquely installed, valve plate 3 and the
The surrounding side 31 of one sealing pair 41 sealing is cambered surface, and scavenging conduit 111 is provided in the medium channel 11 of the valve body 1, is purged
It is provided on pipe 111 towards the purge hole 1111 at the sealing of stack valve seat 4 and valve plate 3.Incline first sealing pair, 41 end face 411
It is leakproofness in order to improve valve plate 3 and stack valve seat 4 that tiltedly the cambered surface of setting and 3 surrounding side 31 of valve plate, which is set, stack valve seat 4
Whole end face in cone, valve plate 3 contacts into hyperboloid cake type butterfly plate, valve plate 3 with the contact surface of stack valve seat 4 close to line,
Leakproofness can not only be improved in this way, avoids causing the situation of sealing effect difference to occur due to surface irregularity, reduce stack valve seat 4
Machining accuracy, stack valve seat 4 is metal hard-sealing, and application range is wider, and applicable temperature range is also wider, purge hole 1111
It is uniformly distributed along the circumferential direction of 111 center line of scavenging conduit, and 1111 face stack valve seat 4 of purge hole and the junction of valve plate 3, effectively
4 bottom of removing stack valve seat dust stratification, dust stratification is prevented to be adhered with the first sealing pair 41, influences sealing effect, it is simple in structure, make
Use long lifespan.
The correspondence both sides of above-mentioned scavenging conduit 111 are connected with ventilation duct 12, and ventilation duct 12 connects setting, institute with scavenging conduit 111
It states and is provided with boring cover on the port of ventilation duct 12.At least one ventilation duct 12 is connect with external blower device, when needing cleaning,
Make to divulge information in scavenging conduit 111, wind out blows to stack valve seat and valve plate 3 out of purge hole 1111, and two ventilation ducts 111 can divide
For blast pipe and discharge pipe, wind is avoided, which all to stay in medium channel 11, to discharge, and the setting of boring cover is dust etc. in order to prevent
Booty enters in scavenging conduit 111, avoids 1 inside of valve body contaminated, simple in structure, keeps health.
Be provided between 41 peripheral surface of inner wall and the first sealing pair of above-mentioned medium channel 11 mutual cooperation prevent it is first close
The limited shoulder rank 112 of 41 movement of envelope pair and positive stop lug boss 412, the second sealing pair 42 are set in the peripheral surface of the first sealing pair 41
On, the second sealing pair 42 is abutted with the outside of positive stop lug boss 412, and the lid of third sealing pair 43 is located on the first sealing pair 41 and with the
Two sealing pairs 42 abut, and the outside of the third sealing pair 43 is provided with the trim ring 13 abutted therewith, stack valve seat 4 and valve body 1
Form detachable setting.Limited shoulder rank 112 forms limiting cooperation with positive stop lug boss 412, avoids the first sealing pair 41 in trim ring 13
Extruding under shift, the setting of the second sealing pair 42 is to make the first sealing pair 41 and the inner wall sealing of valve body 1, pass through limiting
The cooperation of shoulder rank 112 and positive stop lug boss 412, the second sealing pair 42 and the first sealing pair 41 radially with formed in circumferential direction it is close
Envelope cooperation makes third sealing pair 43 form sealing with the first sealing pair 41 and the second sealing pair 42 and matches by the extruding of trim ring 13
It closes, during dismounting, trim ring 13 need to only be removed, you can stack valve seat 4 is removed, it is simple in structure, it is convenient for changing, extends and use the longevity
Life.
The opposite face of above-mentioned 412 and second sealing pair 42 of positive stop lug boss is the inclined surface 4121,421 being mutually adapted, third
The groove 431 being adapted to the outer end of the first sealing pair 41 is provided on sealing pair 43, the outer end of the first sealing pair 41 is embedded
In the groove 431.The setting of inclined surface 4121,421 is in order to which the first sealing pair 41 and the second sealing pair 42 is made to seal more
Closely, the section l-shaped of groove 431, third sealing pair 43 are the equal of to be set on the first sealing pair 41, radially and axis
There is a sealing effect upwards, mitigate and pull problem between sealing pair, avoid stuck and deformation.
Above-mentioned valve rod 2 includes upper valve rod 21 and lower valve rod 22, and upper valve rod 21 is connect with lower valve rod 22 by valve plate 3, lower valve
Lower shaft sleeve 221 and plain thrust bearing 222 are provided between bar 22 and valve body 1, filler is provided between upper valve rod 21 and valve body 1
211 and gland 212.Situations such as valve rod 2 is facilitated to rotate, avoids generating gap between valve rod 2 and valve body 1, causes leakage, knot
Structure is simple, easy for installation.
The utility model is not limited to above-mentioned specific embodiment, and persons skilled in the art are according to the utility model public affairs
The content opened, may be used other a variety of specific embodiments implement it is the utility model or every using the utility model
Design structure and thinking, do simple change or change, both fall within the scope of protection of the utility model.
Claims (5)
1. a kind of all-metal sealing spherical valve of band purging structure, including valve body, valve rod, valve plate, stack valve seat and handle, handle
It is linked with valve rod by turbine apparatus, it is characterised in that：For the valve plate relative to valve rod in eccentric setting, stack valve seat includes phase
Mutually the first sealing pair, the second sealing pair and the third sealing pair of sealing cooperation, the first sealing pair, the second sealing pair and third sealing
Pair is each attached on valve body, and the first sealing pair forms sealed set with valve plate, and the end face of the first sealing pair towards the valve plate is
It is obliquely installed, the surrounding side of valve plate and the first sealing secondary sealing is cambered surface, and purging is provided in the medium channel of the valve body
It manages, is provided on scavenging conduit towards the purge hole at the sealing of stack valve seat and valve plate.
2. the all-metal sealing spherical valve of band purging structure according to claim 1, it is characterised in that：The scavenging conduit
Corresponding both sides are connected with ventilation duct, and ventilation duct connects setting with scavenging conduit, boring cover is provided on the port of the ventilation duct.
3. the all-metal sealing spherical valve of band purging structure according to claim 1 or 2, it is characterised in that：The medium
Be provided between the inner wall of channel and the first sealing pair peripheral surface cooperate prevent the first sealing pair move limited shoulder rank and
Positive stop lug boss, the second sealing pair are set on the peripheral surface of the first sealing pair, and the second sealing pair is abutted with the outside of positive stop lug boss,
Third sealing pair lid is located on the first sealing pair and is abutted with the second sealing pair, is provided with therewith on the outside of the third sealing pair
The trim ring of abutting, stack valve seat form detachable setting with valve body.
4. the all-metal sealing spherical valve of band purging structure according to claim 3, it is characterised in that：The positive stop lug boss
Opposite face with the second sealing pair is the inclined surface being mutually adapted, and the outer end with the first sealing pair is provided on third sealing pair
The groove of adaptation, the outer end of the first sealing pair are embedded in the groove.
5. the all-metal sealing spherical valve of the band purging structure according to claims 1 or 2 or 4, it is characterised in that：The valve
Bar includes upper valve rod and lower valve rod, and upper valve rod is connect with lower valve rod by valve plate, and Lower shaft sleeve is provided between lower valve rod and valve body
And plain thrust bearing, filler and gland are provided between upper valve rod and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721417746.8U CN207527064U (en) | 2017-10-30 | 2017-10-30 | All-metal sealing spherical valve with purging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721417746.8U CN207527064U (en) | 2017-10-30 | 2017-10-30 | All-metal sealing spherical valve with purging structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207527064U true CN207527064U (en) | 2018-06-22 |
Family
ID=62571448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721417746.8U Active CN207527064U (en) | 2017-10-30 | 2017-10-30 | All-metal sealing spherical valve with purging structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207527064U (en) |
-
2017
- 2017-10-30 CN CN201721417746.8U patent/CN207527064U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |