CN205446733U - Dual -ball vent valve - Google Patents
Dual -ball vent valve Download PDFInfo
- Publication number
- CN205446733U CN205446733U CN201620192155.4U CN201620192155U CN205446733U CN 205446733 U CN205446733 U CN 205446733U CN 201620192155 U CN201620192155 U CN 201620192155U CN 205446733 U CN205446733 U CN 205446733U
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- CN
- China
- Prior art keywords
- valve
- air bleeding
- nut
- support
- valve body
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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.)
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Abstract
The utility model provides a dual -ball vent valve, including the main valve body, set up in the import of main valve body below, set up and establish valve gap and the gland packing of setting above the valve gap on the main valve body in the internal portion of main valve and with import complex valve clack, the valve rod of being connected and driving the valve clack motion with the valve clack, lid, valve gap and gland packing are passed to the valve rod upper end, dual -ball vent valve is still including installing support on the gland packing, installing the valve -stem nut on the support and install the hand wheel on valve -stem nut, the valve rod follow descends the supreme support that passes, the support is located and is equipped with the packing seal circle between one end and the valve rod of gland packing, valve -stem nut install the other end of support and with valve rod screw -thread fit, be convenient for to observe dual -ball vent valve's the condition of opening and close like this and improve life.
Description
Technical field
This utility model relates to valve field, particularly relates to a kind of double ball air bleeding valve.
Background technology
Air bleeding valve is a kind of conventional valve, is typically mounted on high point or the turning of pipeline, and opening and closing element is ball float and flap.As it is shown in figure 1, flap 3 ' is arranged on the end of valve rod 5 ', being placed in the valve pocket of valve body 1 by ball float 4 ', aperture exhaust end cover 7 ' fastens with valve body 1 ', and cap transmission 9 ' coordinates on valve stem nut 8 ', and valve rod 5 ' and valve stem nut 8 ' are to pass through threaded engagement.When flap 3 ' is lifted off valve body import 2 ', the gas in pipeline is introduced in valve pocket, is discharged by aperture exhaust end cover 7 ', then pressure reduces, liquid flows in the valve pocket of valve body 1 ', and ball float 4 ' rises to aperture exhaust end cover 7 ' and blocked steam vent 6 ', seals.The operation principle of existing design is to drive valve stem nut 8 ' to rotate by rotary drive cap 9 ', and valve rod 5 ' moves up and down in the valve chamber of valve body 1 ', drives flap 3 ' to make keying effect.But valve rod 5 ' of the prior art is placed in the space of closing, exhaust valve operation with do not work from not dividing lobe in appearance；And valve rod 5 ' is placed in the medium in valve pocket, easily by erosion medium resistance, thus affect the service life of air bleeding valve.
In consideration of it, be necessary that a kind of double ball air bleeding valves of design are to solve the problems referred to above.
Utility model content
The technical problems to be solved in the utility model is: provide a kind of can so that observe keying situation and improve service life double ball air bleeding valves.
For reaching above-mentioned purpose, this utility model provides following technical scheme: a kind of double ball air bleeding valves, including main valve body, it is arranged on the import below main valve body, it is arranged on the flap that main valve body is internal and coordinates with import, the valve rod being connected with flap and drive flap to move, cover the valve gap being located on main valve body and be arranged on the stuffing box above valve gap, described valve rod upper end passes valve gap and stuffing box, described pair of ball air bleeding valve also includes the support being arranged on stuffing box, rack-mount valve stem nut and the hands wheel being arranged on valve stem nut, described valve rod from bottom to up through support, described support is provided with packing seal circle between one end and valve rod of stuffing box, described valve stem nut is arranged on the other end of support and coordinates with threaded stem.
Further, the other end of described support is provided with the installing hole coordinated with valve stem nut, and described valve stem nut lower end convex is provided with the holding section of annular, and the outside diameter of described holding section is more than the aperture of installing hole.
Further, described valve rod is provided with the screw thread being positioned on stuffing box.
Further, described valve rod is arranged with the gland being positioned at above packing seal circle.
Further, described pair of ball air bleeding valve also includes connecting with main valve body and symmetrically arranged two auxiliary valve bodies, in described auxiliary valve body is equipped with secondary valve pocket and is arranged on secondary valve pocket and mobile ball float.
Further, being convexly equipped with some guide rail inside described secondary valve pocket, described guide rail the most vertically extends formation from the bottom of secondary valve pocket.
Further, one of them auxiliary valve body described is arranged over first exhaust end cap, be arranged on first exhaust end cap first row pore and the aerofluxus nut coordinated with first row pore, described aerofluxus nut is provided with air discharge duct that is axially in parallel with aerofluxus nut and that connect with first row pore and runs through aerofluxus nut and the exhaust passage connected with air discharge duct along being perpendicular to aerofluxus nut axially direction.
Further, another auxiliary valve body described is arranged over second exhaust end cap, be arranged on second exhaust end cap second row pore and be arranged on the protecting cover on second exhaust end cap, being provided with gap between described second exhaust end cap and protecting cover, the aperture of described second row pore is more than the aperture of first row pore.
Prior art is compared, and this utility model at least has the advantage that and moves up and down when handwheel and valve stem nut rotarily drive valve stem nut simultaneously, can be told the keying situation of air bleeding valve by the thread variations observing valve rod；Valve stem nut and threaded stem are placed in outside cavity, not by erosion medium resistance, can extend the service life of air bleeding valve.
Accompanying drawing explanation
Fig. 1 is the structural representation of the air bleeding valve of prior art.
Fig. 2 is the structural representation of of the present utility model pair of ball air bleeding valve.
Detailed description of the invention
Structure and the utility model content of the double ball air bleeding valve of this utility model are described below in conjunction with Fig. 2.
A kind of double ball air bleeding valve, connect with main valve body 1 including main valve body 1 and symmetrically arranged two auxiliary valve bodies 2, be arranged on the import 3 below main valve body 1, be arranged on main valve body 1 flap 4 that is internal and that coordinate with import 3 be connected with flap 4 and drive valve rod 5 that flap 4 moves, cover be located on main valve body 1 valve gap 6, be arranged on the stuffing box 7 above valve gap 6, the support 8 being arranged on stuffing box 7, the valve stem nut 9 being arranged on support 8 and the handwheel 10 being arranged on valve stem nut 9.
Described valve rod 5 sequentially passes through valve gap 6, stuffing box 7 and support 8 from bottom to up.Described valve rod 5 is provided with the screw thread being positioned on stuffing box 7.
Described support 8 includes the support end 12 coordinated with valve stem nut with the fixing end 11 of stuffing box cooperation and is connected fixing end 11 and some connecting portions 13 of support end 12.Spacing is left between described adjacent connecting portion 13.Described valve rod 5 passes support end 12 from fixing end 11.The kinestate of valve rod 5 can be observed by the spacing between connecting portion 13, and then observe the keying situation of flap 4.
Described support 8 is additionally provided with packing seal circle 14 between the fixing end 11 and valve rod 5 of stuffing box 7.The gland 15 being positioned at above packing seal circle 14 it is arranged with on described valve rod 5.The sealing function of main valve body 1 is achieved by said structure.
The support end 12 of described support 8 is provided with the installing hole (not shown) coordinated with valve stem nut 9.Described valve stem nut 9 lower end convex is provided with the holding section 16 of annular.The outside diameter of described holding section 16 is more than the endoporus aperture of installing hole.The inner surface clamping of two connecting portions 13 that described holding section 16 is relative with support 8 is fixed.
Described valve stem nut 9 is fixed on the support end 12 of support 8 and passes through threaded engagement with valve rod 5.
Described each auxiliary valve body 2 is equipped with secondary valve pocket 17 and is arranged on the secondary interior and mobile ball float 18 of valve pocket 17.Described secondary valve pocket 17 is internal is convexly equipped with some guide rail 19.Described guide rail 19 the most vertically extends formation from the bottom of secondary valve pocket 17.All guide rail 19 surround a host cavity.Described ball float 18 is positioned at host cavity and the track along guide rail 19 moves up and down, and so can limit the movement locus of ball float 18, it is ensured that sealing property.
One of them auxiliary valve body 2 described is arranged over first exhaust end cap 20, be arranged on first exhaust end cap 20 first row pore 21 and the aerofluxus nut 22 coordinated with first row pore 21.Described aerofluxus nut 22 is provided with air discharge duct 23 that is axially in parallel with aerofluxus nut 22 and that connect with first row pore 21 and runs through aerofluxus nut 22 and the exhaust passage 24 connected with air discharge duct along being perpendicular to aerofluxus nut 22 axially direction.This auxiliary valve body 2 achieves aperture aerofluxus, have adjusted capacity.
Another auxiliary valve body 2 described is arranged over second exhaust end cap 25, be arranged on second exhaust end cap 25 second row pore 26 and the protecting cover 27 being arranged on second exhaust end cap 25.Being provided with gap between described second exhaust end cap and protecting cover, the gas in pipeline is discharged to the external world by this gap.The aperture of described second row pore 26 is more than the aperture of first row pore 21, it is achieved macropore aerofluxus.
This utility model rotarily drives valve rod 5 simultaneously move up and down when handwheel 10 and valve stem nut 9, from the most distinguishable go out double ball air bleeding valves keying situation；Valve stem nut is placed in outside main valve body, not acceptor's valve inner erosion medium resistance, can extend the service life of double ball air bleeding valve.
In sum, these are only preferred embodiment of the present utility model, scope of the present utility model should not limited with this.The most every simple equivalence change made according to this utility model claims and description with modify, all should still belong in the range of this utility model patent contains.
Claims (8)
1. a double ball air bleeding valve, including main valve body, it is arranged on the import below main valve body, it is arranged on the flap that main valve body is internal and coordinates with import, the valve rod being connected with flap and drive flap to move, cover the valve gap being located on main valve body and be arranged on the stuffing box above valve gap, described valve rod upper end passes valve gap and stuffing box, it is characterized in that: described pair of ball air bleeding valve also includes the support being arranged on stuffing box, rack-mount valve stem nut and the hands wheel being arranged on valve stem nut, described valve rod from bottom to up through support, described support is provided with packing seal circle between one end and valve rod of stuffing box, described valve stem nut is arranged on the other end of support and coordinates with threaded stem.
2. double ball air bleeding valve as claimed in claim 1, it is characterized in that: the other end of described support is provided with the installing hole coordinated with valve stem nut, described valve stem nut lower end convex is provided with the holding section of annular, and the outside diameter of described holding section is more than the aperture of installing hole.
3. double ball air bleeding valve as claimed in claim 1, it is characterised in that: described valve rod is provided with the screw thread being positioned on stuffing box.
4. double ball air bleeding valve as claimed in claim 1, it is characterised in that: it is arranged with the gland being positioned at above packing seal circle on described valve rod.
5. ball air bleeding valves as claimed in claim 1 double, it is characterised in that: described pair of ball air bleeding valve also includes connect with main valve body and symmetrically arranged two auxiliary valve bodies, and described auxiliary valve body is equipped with secondary valve pocket and is arranged on that secondary valve pocket is interior and mobile ball float.
6. double ball air bleeding valve as claimed in claim 5, it is characterised in that: being convexly equipped with some guide rail inside described secondary valve pocket, described guide rail the most vertically extends formation from the bottom of secondary valve pocket.
7. double ball air bleeding valve as claimed in claim 6, it is characterized in that: one of them auxiliary valve body described is arranged over first exhaust end cap, the first row pore that is arranged on first exhaust end cap and the aerofluxus nut coordinated with first row pore, and described aerofluxus nut is provided with air discharge duct that is axially in parallel with aerofluxus nut and that connect with first row pore and runs through aerofluxus nut and the exhaust passage connected with air discharge duct along being perpendicular to aerofluxus nut axially direction.
8. double ball air bleeding valve as claimed in claim 7, it is characterized in that: another auxiliary valve body described is arranged over second exhaust end cap, the second row pore that is arranged on second exhaust end cap and be arranged on the protecting cover on second exhaust end cap, being provided with gap between described second exhaust end cap and protecting cover, the aperture of described second row pore is more than the aperture of first row pore.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520991401 | 2015-12-04 | ||
| CN2015209914018 | 2015-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205446733U true CN205446733U (en) | 2016-08-10 |
Family
ID=56603666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620192155.4U Active CN205446733U (en) | 2015-12-04 | 2016-03-14 | Dual -ball vent valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205446733U (en) |
-
2016
- 2016-03-14 CN CN201620192155.4U patent/CN205446733U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |