CN208900745U - A kind of shut-off valve - Google Patents
A kind of shut-off valve Download PDFInfo
- Publication number
- CN208900745U CN208900745U CN201821645922.8U CN201821645922U CN208900745U CN 208900745 U CN208900745 U CN 208900745U CN 201821645922 U CN201821645922 U CN 201821645922U CN 208900745 U CN208900745 U CN 208900745U
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- China
- Prior art keywords
- valve
- handwheel
- core bar
- valve rod
- piston
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Abstract
A kind of shut-off valve, including handwheel, valve rod, valve seat, gland, the handwheel lower end is fixedly connected with valve rod, the handwheel is mounted in valve seat with valve rod and is connected through a screw thread with valve seat, the gland is installed between valve seat and valve rod, the valve rod includes valve pipe and positioned at core bar that is interior and can mutually sliding with valve pipe, valve pipe lower end is equipped with the piston end thickeied, the piston head for being fixedly connected with core bar is equipped with below the piston end, the piston end and piston head outer end pass through the elastic sealing film being equipped with and are tightly connected in be formed the air bag chamber for having gas, the tension spring for being separately connected piston end and piston head is equipped in the airbag chamber room, the handwheel is equipped with the centre bore of connection core bar, there is the apical axis that threaded connection is constituted with it in the centre bore, the apical axis abuts against cooperation with core bar composition.
Description
Technical field
The utility model relates to hydraulic valve fields, and in particular to a kind of shut-off valve.
Background technique
Shut-off valve in the prior art includes handwheel, valve rod, valve seat, gland, and liquid flow is made when valve rod moves down
Circulation passage is in the open state, and fluid flow paths is made to be in closed state when valve rod moves down.And valve rod will make
Fluid flow paths are in closed state and must have enough leakproofness, valve rod in the prior art due to use the time compared with
It is long or itself there are dimensional discrepancys to cause leakproofness insufficient, and then influence leakproofness.
Utility model content
To solve the above-mentioned problems, the utility model provides a kind of shut-off valve:
A kind of shut-off valve, including handwheel, valve rod, valve seat, gland, the handwheel lower end are fixedly connected with valve rod, the handwheel
It is mounted in valve seat with valve rod and is connected through a screw thread with valve seat, the gland is installed between valve seat and valve rod, the valve
Bar includes valve pipe and positioned at core bar that is interior and can mutually sliding with valve pipe, and valve pipe lower end is equipped with the piston end thickeied, institute
The piston head for being equipped with below piston end and being fixedly connected with core bar is stated, the piston end and piston head outer end pass through the elastic packing being equipped with
Film is tightly connected the air bag chamber to there is gas in formation, is equipped in the airbag chamber room and is separately connected piston end and piston head
Tension spring, the handwheel is equipped with the centre bore of connection core bar, has the apical axis for constituting threaded connection with it in the centre bore,
The apical axis abuts against cooperation with core bar composition.
Preferably, the apical axis upper end is equipped with nut, and the nut is equipped with cross or a word connector is convenient for screw
The connection of knife rotates.
The utility model has the advantages that when user find valve rod air-tightness deficiency cause leakage when, can by rotating apical axis upwards,
Tension spring reduces the relative distance of piston end piston head, at this time since the indoor gas flow of airbag chamber is fixed value, and then leads
Elastic sealing film is caused to bulge, the air-tightness of the opposite valve seat by improving valve rod.
Detailed description of the invention
Fig. 1 is the diagrammatic cross-section of embodiment.
Fig. 2 is the partial cutaway schematic of valve pipe.
1, handwheel；2, valve seat；3, gland；4, valve pipe；5, core bar；6, piston end；7, piston head；8, tension spring；9, it pushes up
Axis；10, nut.
Specific embodiment
The utility model is further described in 1-2 and embodiment with reference to the accompanying drawing.
Embodiment: a kind of shut-off valve, including handwheel 1, valve rod, valve seat 2, gland 3,1 lower end of handwheel are fixedly connected with valve
Bar, the handwheel 1 and valve rod are mounted in valve seat 2 and are connected through a screw thread with valve seat 2, the gland 3 be installed on valve seat 2 with
Between valve rod.The valve rod includes valve pipe 4 and positioned at core bar 5 that is interior and can mutually sliding with valve pipe 4,4 lower end of valve pipe
Piston end 6 equipped with thickening is equipped with the piston head 7 for being fixedly connected with core bar 5 below the piston end 6.The piston end 6 and piston
First 7 outer end passes through the elastic sealing film being equipped with and is tightly connected in be formed the air bag chamber for having gas.In the airbag chamber room
Equipped with the tension spring 8 for being separately connected piston end 6 Yu piston head 7, the handwheel 1 is equipped with the centre bore of connection core bar 5.In described
There is the apical axis 9 that threaded connection is constituted with it in heart hole, the apical axis 9 abuts against cooperation with the composition of core bar 5.9 upper end of apical axis
Equipped with nut 10 is equipped with, the nut 10 is equipped with cross or a word connector and rotates convenient for the connection of screwdriver.
Operation logic: shut-off valve controls the opening and closing of fluid flow paths by the upper and lower displacement of valve rod, when valve rod to
Make fluid flow paths in the open state when lower mobile.And it is in fluid flow paths and closes
Conjunction state can be by rotating apical axis 9, pulling force at this time when the air-tightness deficiency of user's discovery valve rod leads to leakage upwards
Spring 8 reduces the relative distance of 6 piston head 7 of piston end, at this time since the indoor gas flow of airbag chamber is fixed value, and then causes
Elastic sealing film bulges, and increases the diameter of valve rod, and then improves the air-tightness of the opposite valve seat 2 of valve rod.
Obviously, the above embodiments of the present invention is merely to illustrate that examples for clearly illustrating the present invention, and is not
Limitations of the embodiments of the present invention.For those of ordinary skill in the art, on above explained basis
On can also make other various forms of variations or variation.There is no need and unable to give poor example to all embodiments.
And these connotation changes and variations that derived from for belonging to the utility model still fall within the utility model
Protection scope.
Claims (2)
1. a kind of shut-off valve, including handwheel (1), valve rod, valve seat (2), gland (3), handwheel (1) lower end is fixedly connected with valve
Bar, the handwheel (1) are mounted in valve seat (2) with valve rod and are connected through a screw thread with valve seat (2), gland (3) installation
Between valve seat (2) and valve rod, it is characterised in that: and can be mutual with valve pipe (4) in the valve rod includes valve pipe (4) and is located at
The core bar (5) of sliding, valve pipe (4) lower end are equipped with the piston end (6) thickeied, fixed connect are equipped with below the piston end (6)
The piston head (7) of core bar (5) is connect, the piston end (6) and piston head (7) outer end pass through the elastic sealing film being equipped with and be tightly connected
To there is the air bag chamber of gas in formation, the drawing for being separately connected piston end (6) Yu piston head (7) is equipped in the airbag chamber room
Power spring (8), the handwheel (1) are equipped with the centre bore of connection core bar (5), have in the centre bore and constitute threaded connection with it
Apical axis (9), constituting with core bar (5) for the apical axis (9) abut against cooperation.
2. a kind of shut-off valve according to claim 1, it is characterised in that: apical axis (9) upper end is equipped with nut
(10), the nut (10) is equipped with cross or a word connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821645922.8U CN208900745U (en) | 2018-09-22 | 2018-09-22 | A kind of shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821645922.8U CN208900745U (en) | 2018-09-22 | 2018-09-22 | A kind of shut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208900745U true CN208900745U (en) | 2019-05-24 |
Family
ID=66575299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821645922.8U Active CN208900745U (en) | 2018-09-22 | 2018-09-22 | A kind of shut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208900745U (en) |
-
2018
- 2018-09-22 CN CN201821645922.8U patent/CN208900745U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |