CN208311500U - The flange sluice valve with screw connected valve cover of novel middle section structure - Google Patents
The flange sluice valve with screw connected valve cover of novel middle section structure Download PDFInfo
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- CN208311500U CN208311500U CN201721781641.0U CN201721781641U CN208311500U CN 208311500 U CN208311500 U CN 208311500U CN 201721781641 U CN201721781641 U CN 201721781641U CN 208311500 U CN208311500 U CN 208311500U
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- transition joint
- clamp nut
- coaxial
- screw thread
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Abstract
The utility model relates to a kind of flange sluice valve with screw connected valve cover of novel middle section structure, including valve body, valve deck, valve rod, transition joint, clamp nut and flashboard, and in the coaxial annular groove in transition joint valve stem passage top, annular groove inner wall is formed with screw thread；The clamp nut is cylindrical shape, clamp nut outer circle is coaxially formed with screw thread, the screw thread is engaged with the threaded coaxial in the annular groove of transition joint, clamp nut upper end end is coaxially radially outward formed with bulge loop, the bulge loop is identical as the external profile diameter on transition joint top, is coaxially pressed on the upper end end of transition joint.The transition joint of the flange sluice valve with screw connected valve cover of novel middle section structure provided by the present application is sealed no longer by the way of same outer shaft sleeve clamp nut on top, but it is improved, form the sealing means of the clamp nut of coaxial inner sleeve, sealing performance is more preferable, installs quicker.
Description
Technical field
The utility model belongs to valve field, is a kind of flange sluice valve with screw connected valve cover of novel middle section structure.
Background technique
Gate valve is an opening and closing element flashboard, and the direction of motion and flow direction of flashboard are perpendicular, gate valve can only make standard-sized sheet and
Quan Guan cannot make adjustments and throttle.Gate valve is sealed by valve seat and rams contact, and usual sealing surface can deposited metal material
To increase wearability, such as built-up welding 1Cr13, STL6, stainless steel.Flashboard has rigid flashboard and flexible disc, not according to flashboard
Together, gate valve is divided into rigid gate valve and resilient gate valve.
By retrieval, it is found that following patent documents and the application correlation are larger, particular content is as follows:
CN201827409U discloses a kind of steel-casting threaded connection gate valve, by being formed with lower component: valve body, valve seat, valve plate, big
Gasket, valve deck, valve rod, transition joint, minipad, Packing seat, stem nut, gland and handwheel, it is mutual between these components
Structure is as follows: valve deck is fixed on valve body, and valve rod passes through valve deck, and outer end is connect with handwheel, and valve plate is located on valve seat simultaneously laterally
Equipped with the channel cooperated with valve seat, valve plate top be equipped with connect with threaded stem cooperation female screw connection, minipad with fill out
Between stem nut and gland, gland is fixed under handwheel backing strap, fixes minipad and Packing seat, big gasket
Between valve plate and valve deck.
A kind of gate valve of CN202901336U, comprising: valve body, the valve body is interior to be equipped with left valve channel, right valve channel；Flashboard, it is described
Between flashboard and the left valve channel, sealing ring is respectively and fixedly provided between the flashboard and the right valve channel, the sealing ring is that copper is close
Seal ring, the copper sealing ring are welded on the flashboard, further include valve deck, the valve deck is fixed on the upper surface of the valve body；
The junction of the valve deck and the valve body is equipped with washer.
The application has carried out larger improvement on the basis of above-mentioned patent, obtains good effect.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of installation effectiveness height, good seal performance,
The flange sluice valve with screw connected valve cover of the novel middle section structure of structure novel.
The utility model realizes that the technical solution of purpose is as follows:
A kind of flange sluice valve with screw connected valve cover of novel middle section structure, including valve body, valve deck, valve rod, transition joint,
Clamp nut and flashboard, the lower end of valve deck are threadedly coupled with the upper end co-axial seal of valve body；The upper end of valve deck is arranged
Internal screw thread is arranged in the lower end of external screw thread, stem nut, and the concentric phase in the upper end of valve deck and the lower end of transition joint is threadedly coupled,
Sealing ring is installed between valve deck and transition joint；Transition joint upper end coaxial threaded engages clamp nut, and the lower end of valve rod is same
Axis penetrates stem nut, valve deck is connected with the end of the intracorporal flashboard of valve, it is characterised in that: in the transition joint valve stem passage
The coaxial annular groove in portion, annular groove inner wall are formed with screw thread；The clamp nut is cylindrical shape, and clamp nut outer circle is coaxially formed with screw thread, should
Screw thread is engaged with the threaded coaxial in the annular groove of transition joint, and clamp nut upper end end is coaxially radially outward formed with bulge loop, should
Bulge loop is identical as the external profile diameter on transition joint top, is coaxially pressed on the upper end end of transition joint.
Moreover, clamp nut lower end and the coaxial embedded sealing ring of diameter of ring groove in annular groove.
The utility model has the following beneficial effects:
1, the transition joint of the flange sluice valve with screw connected valve cover of novel middle section structure provided by the present application top not
It is sealed, but is improved by the way of same outer shaft sleeve clamp nut again, form the compression spiral shell of coaxial inner sleeve
Female sealing means, sealing performance is more preferable, installs quicker.
2, it is embedded in the transition joint of the flange sluice valve with screw connected valve cover of novel middle section structure provided by the present application
Sealing ring can guarantee the leakproofness of the clamp nut of inner sleeve, can adequately guarantee that transition joint is direct with clamp nut
The sealing of contact surface.
3, the flange sluice valve with screw connected valve cover of novel middle section structure provided by the present application improves sealing effect, for the first time
Using upper, middle and lower-ranking seal with elastometic washer, valve rod and stem nut are improved, improves the sealing performance of valve.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the application.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by specific embodiment, and following embodiment is only retouched
The property stated, it is not restrictive, cannot successively limit the protection scope of the utility model.
A kind of flange sluice valve with screw connected valve cover of novel middle section structure, including valve body 1, valve deck 3, valve rod 4, in indirectly
First 5, clamp nut 8 and flashboard 2, the lower end of valve deck are threadedly coupled with the upper end co-axial seal of valve body；The upper end of valve deck
External screw thread is arranged in portion, and internal screw thread, the concentric phase spiral shell in the upper end of valve deck and the lower end of transition joint is arranged in the lower end of stem nut
Line connection, installs sealing ring 6 between valve deck and transition joint；Transition joint upper end coaxial threaded engage clamp nut 5, in indirectly
The coaxial embedded sealing ring 7 of sealing surface of head and clamp nut, the lower end of valve rod coaxially penetrates stem nut, valve deck and the intracorporal lock of valve
The end of plate is connected, and the other end of valve rod can fasten setting handwheel or turbine head.
The innovation of the application is:
1, the transition joint upper end does not use external screw thread in the prior art, and uses internal screw thread mode, in indirectly
The coaxial annular groove of head valve bar upper part of channel, annular groove inner wall are formed with screw thread.Completely novel form, replace seal form after, connection and
It installs all very convenient.
2, the clamp nut is cylindrical shape, and clamp nut outer circle is coaxially formed with screw thread, the ring of the screw thread and transition joint
Threaded coaxial engagement in slot, clamp nut upper end end are coaxially radially outward formed with bulge loop, the bulge loop and transition joint top
External profile diameter it is identical, be coaxially pressed on the upper end end of transition joint.
3, the clamp nut lower end in annular groove and the coaxial embedded sealing ring of diameter of ring groove, guarantee sealing between the two
Property.
It has been embedded in the transition joint of the flange sluice valve with screw connected valve cover of novel middle section structure provided by the present application close
Seal can guarantee the leakproofness of the clamp nut of inner sleeve, can adequately guarantee that transition joint directly connects with clamp nut
The sealing of contacting surface.
Claims (1)
1. a kind of flange sluice valve with screw connected valve cover of novel middle section structure, including valve body, valve deck, valve rod, transition joint, pressure
Tight nut and flashboard, the lower end of valve deck are threadedly coupled with the upper end co-axial seal of valve body；The upper end setting of valve deck is outer
Internal screw thread is arranged in the lower end of screw thread, stem nut, and the concentric phase in the upper end of valve deck and the lower end of transition joint is threadedly coupled, valve
Sealing ring is installed between lid and transition joint；Transition joint upper end coaxial threaded engages clamp nut, and the lower end of valve rod is coaxial
Penetrate stem nut, valve deck is connected with the end of the intracorporal flashboard of valve, it is characterised in that: on transition joint valve stem passage top
Coaxial annular groove, annular groove inner wall are formed with screw thread；The clamp nut is cylindrical shape, and clamp nut outer circle is coaxially formed with screw thread, the spiral shell
Line is engaged with the threaded coaxial in the annular groove of transition joint, and clamp nut upper end end is coaxially radially outward formed with bulge loop, this is convex
Ring is identical as the external profile diameter on transition joint top, is coaxially pressed on the upper end end of transition joint；Compression spiral shell in annular groove
Female lower end and the coaxial embedded sealing ring of diameter of ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721781641.0U CN208311500U (en) | 2017-12-19 | 2017-12-19 | The flange sluice valve with screw connected valve cover of novel middle section structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721781641.0U CN208311500U (en) | 2017-12-19 | 2017-12-19 | The flange sluice valve with screw connected valve cover of novel middle section structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208311500U true CN208311500U (en) | 2019-01-01 |
Family
ID=64731056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721781641.0U Active CN208311500U (en) | 2017-12-19 | 2017-12-19 | The flange sluice valve with screw connected valve cover of novel middle section structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208311500U (en) |
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2017
- 2017-12-19 CN CN201721781641.0U patent/CN208311500U/en active Active
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