CN209294534U - A kind of more revolution straight stroke valve guide and limit mechanisms - Google Patents
A kind of more revolution straight stroke valve guide and limit mechanisms Download PDFInfo
- Publication number
- CN209294534U CN209294534U CN201822267953.0U CN201822267953U CN209294534U CN 209294534 U CN209294534 U CN 209294534U CN 201822267953 U CN201822267953 U CN 201822267953U CN 209294534 U CN209294534 U CN 209294534U
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- China
- Prior art keywords
- valve
- valve rod
- stem nut
- limit
- straight stroke
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- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 210000004907 gland Anatomy 0.000 claims abstract description 12
- 230000000452 restraining effect Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 206010048669 Terminal state Diseases 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a kind of more revolution straight stroke valve guide and limit mechanisms, it includes valve rod, valve stem nut, bracket, bearing and bearing gland；Valve stem nut is connect with valve rod outside screw, and valve stem nut outside screw connects restraining position ring block；It is connected between valve stem nut bottom end and bracket by bearing, bearing gland is covered on valve stem nut and connect by bearing between valve stem nut；Bearing gland is fixedly connected with the top of bracket；Stop collar is equipped with spacing tongue；Branch is provided with axial spacing tongue guide groove；Spacing tongue is plugged in spacing tongue guide groove；Upper limit screw and lower limit screw are equipped in spacing tongue guide groove；Valve rod is only capable of being axially moveable.One kind of the utility model turns round straight stroke valve guide and limit mechanism, on the top of valve rod, upper limit and lower limit are set, the mechanical position limitation of valve rod travel can be effectively formed, valve rod is prevented to be deformed and destroy because of overtravel, greatly improve the reliability of more revolution straight stroke valves, convenient operating maintenance.
Description
Technical field
The utility model relates to turn round straight stroke valve field, straight stroke valve guiding is turned round more particularly to one kind more more
Position-limit mechanism.
Background technique
More revolution straight stroke valves, in many operating conditions, when carrying out valve opening and closing, valve rod is sometimes because of overtravel
And be deformed and destroy, this requires need to design a mechanical position limitation, to control the stroke of valve rod.
Utility model content
In order to solve the above technical problems, the utility model provides one kind turns round straight stroke valve guide and limit mechanism more,
The setting mechanical upper limit and lower limit on the top of valve rod, and guiding mechanism is set, the stroke limit of valve rod can be effectively formed
Position, prevents valve rod to be deformed and destroy because of overtravel, substantially increases the reliability of more revolution straight stroke valves, operation dimension
Shield is convenient.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of more revolution straight stroke valve guiding limits
Position mechanism, it includes valve rod, valve stem nut, bracket, bearing and bearing gland；The outside spiral shell of the valve stem nut and valve stem tip
The outside screw of line connection, valve stem nut connects restraining position ring block；Connected between the bottom end and bracket of the valve stem nut by bearing
It connects, the bearing gland covers the position top in valve stem nut, and is connect between valve stem nut by bearing；Bearing gland is also
It is fixedly connected with the top of bracket；Spacing tongue is provided on the stop collar；The bracket is in position corresponding with spacing tongue
It is provided with axial spacing tongue guide groove；The spacing tongue is plugged in spacing tongue guide groove；The bracket is led positioned at spacing tongue
The top of slot is provided with upper limit screw, bottom end is provided with lower limit screw；The valve rod is only capable of being axially moveable, Bu Nengzhou
To rotation.
The top of the valve stem nut connects handwheel, can cross the rotation of hand wheel rotating control valve stem nut.
When the valve rod is promoted to unlatching terminal, the stop collar moves to top side, and spacing tongue is against upper limit screw
Place forms the mechanical upper limit to valve rod.
When the valve rod drops to closing terminal, the stop collar moves to lower side, and spacing tongue is against lower limit screw
Place forms the mechanical lower limit to valve rod.
The position of the close bottom side of the bracket is provided with guiding screw pole；On the side wall of the valve rod with guiding screw pole pair
The position answered is provided with axial stem guiding slot；The end of guiding screw pole is inserted in stem guiding slot.
When the valve rod is promoted to unlatching terminal, the end of guiding screw pole is located at the bottom end of stem guiding slot.
When the valve rod drops to closing terminal, the end of guiding screw pole is located at the top of stem guiding slot.
The utility model has the beneficial effects that the utility model provides one kind turns round straight stroke valve guide and limit machine more
Structure, by the design of valve stem nut and stop collar, the setting mechanical upper limit and lower limit on the top of valve rod, and be provided with and lead
To stud and stem guiding slot, valve rod is made to be only capable of being axially moveable, cannot circumferentially rotated；The stroke limit of valve rod can be effectively formed
Position, prevents valve rod to be deformed and destroy because of overtravel, substantially increases the reliability of more revolution straight stroke valves, operation dimension
Shield is convenient.
Detailed description of the invention
Fig. 1 is the schematic diagram of the more revolution straight stroke valve guide and limit mechanisms of one kind of embodiment；
Fig. 2 is that the valve of the more revolution straight stroke valve guide and limit mechanisms of one kind of embodiment closes the part of terminal state
The schematic diagram of amplification；
Fig. 3 is the part of the valve opening terminal state of the more revolution straight stroke valve guide and limit mechanisms of one kind of embodiment
The schematic diagram of amplification；
Fig. 4 is the schematic diagram of the A-A section of Fig. 1.
Specific embodiment
In order to deepen the understanding to the utility model, the utility model is done further below in conjunction with drawings and examples
Detailed description, the embodiment are only used for explaining the utility model, do not constitute and limit to the protection scope of the utility model.
Embodiment
As shown in Figures 1 to 4, one kind of the present embodiment turns round straight stroke valve guide and limit mechanism, it includes valve rod
1, valve stem nut 2, bracket 3, bearing 4 and bearing gland 9；The valve stem nut 2 is connect with the outside screw on 1 top of valve rod, valve
The outside screw of stem nut 2 connects restraining position ring block 5；It is connected between the bottom end and bracket 3 of the valve stem nut 2 by bearing 4, institute
9 sets of the bearing gland positions top in valve stem nut 2 are stated, and are connect between valve stem nut 2 by bearing 4；Bearing gland 9 is also
It is fixedly connected with the top of bracket 3；Spacing tongue 11 is provided on the stop collar 5；The bracket 3 is corresponding with spacing tongue 11
Position be provided with axial spacing tongue guide groove 12；The spacing tongue 11 is plugged in spacing tongue guide groove 12；The bracket 3
The top of spacing tongue guide groove 12 is provided with upper limit screw 6, bottom end is provided with lower limit screw 7；The valve rod 1 is only capable of
It is axially moveable, cannot circumferentially rotate；The top of the valve stem nut 2 connects handwheel, can cross hand wheel rotating and control valve stem nut 2
Rotation；The position of the close bottom side of the bracket 3 is provided with guiding screw pole 8；On the side wall of the valve rod 1 with guiding screw pole
8 corresponding positions are provided with axial stem guiding slot 10；The end of guiding screw pole 8 is inserted in stem guiding slot 10.
One kind of the present embodiment turns round straight stroke valve guide and limit mechanism, when the valve rod 1 is promoted to unlatching terminal,
The stop collar 5 moves to top side, and spacing tongue 11 is against at upper limit screw 6, forms the mechanical upper limit to valve rod 1；Institute
State valve rod 1 be promoted to open terminal when, the end of guiding screw pole 8 is located at the bottom end of stem guiding slot 10.
One kind of the present embodiment turns round straight stroke valve guide and limit mechanism, when the valve rod 1 drops to closing terminal,
The stop collar 5 moves to lower side, and spacing tongue 11 is against at lower limit screw 7, forms the mechanical lower limit to valve rod 1；Institute
State valve rod 1 drop to close terminal when, the end of guiding screw pole 8 is located at the top of stem guiding slot 10.
One kind of the present embodiment turns round straight stroke valve guide and limit mechanism, and by rotation valve rod nut, valve rod is upward
Or move downward, stop collar is also moved upwardly or downwardly, since threaded stem screw pitch is different with stop collar thread pitch；Work as valve rod
When being moved upwardly or downwardly to stroke end, stop collar is also moved upwardly or downwardly to stop screw, and then realizes stop collar
The mechanism of valve rod is limited up and down.
One kind of the present embodiment turns round straight stroke valve guide and limit mechanisms, passes through setting for valve stem nut and stop collar
Meter, the setting mechanical upper limit and lower limit on the top of valve rod, and it is provided with guiding screw pole and stem guiding slot, make valve rod only
It can be axially moveable, cannot circumferentially rotate；The stroke limit that valve rod can be effectively formed, prevents valve rod from generating change because of overtravel
Shape and destruction substantially increase the reliability of more revolution straight stroke valves, convenient operating maintenance.
Above-described embodiment should not in any way limit the utility model, all by the way of equivalent replacement or equivalency transform
The technical solution of acquisition is all fallen in the protection scope of the utility model.
Claims (7)
1. a kind of more revolution straight stroke valve guide and limit mechanisms, it is characterised in that: it includes valve rod, valve stem nut, bracket, axis
It holds and bearing gland；The outside screw connection of the connection of the outside screw of the valve stem nut and valve stem tip, valve stem nut is limited
Position ring；It is connected between the bottom end and bracket of the valve stem nut by bearing, the bearing gland covers top in valve stem nut
Position, and connect between valve stem nut by bearing；Bearing gland is also fixedly connected with the top of bracket；On the stop collar
It is provided with spacing tongue；The bracket is provided with axial spacing tongue guide groove in position corresponding with spacing tongue；The limit
Tongue is plugged in spacing tongue guide groove；The top that the bracket is located at spacing tongue guide groove is provided with upper limit screw, bottom end is set
It is equipped with lower limit screw；The valve rod is only capable of being axially moveable, and cannot circumferentially rotate.
2. a kind of more revolution straight stroke valve guide and limit mechanisms according to claim 1, it is characterised in that: the valve rod
The top of nut connects handwheel, can cross the rotation of hand wheel rotating control valve stem nut.
3. a kind of more revolution straight stroke valve guide and limit mechanisms according to claim 1, it is characterised in that: the valve rod
When being promoted to unlatching terminal, the stop collar moves to top side, and spacing tongue is against at upper limit screw, forms the machine to valve rod
Tool upper limit.
4. a kind of more revolution straight stroke valve guide and limit mechanisms according to claim 1, it is characterised in that: the valve rod
When dropping to closing terminal, the stop collar moves to lower side, and spacing tongue is against at lower limit screw, forms the machine to valve rod
Tool lower limit.
5. a kind of more revolution straight stroke valve guide and limit mechanisms according to claim 1, it is characterised in that: the bracket
The position of close bottom side be provided with guiding screw pole；Position corresponding with guiding screw pole is provided with axis on the side wall of the valve rod
To stem guiding slot；The end of guiding screw pole is inserted in stem guiding slot.
6. a kind of more revolution straight stroke valve guide and limit mechanisms according to claim 5, it is characterised in that: the valve rod
When being promoted to unlatching terminal, the end of guiding screw pole is located at the bottom end of stem guiding slot.
7. a kind of more revolution straight stroke valve guide and limit mechanisms according to claim 5, it is characterised in that: the valve rod
When dropping to closing terminal, the end of guiding screw pole is located at the top of stem guiding slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822267953.0U CN209294534U (en) | 2018-12-29 | 2018-12-29 | A kind of more revolution straight stroke valve guide and limit mechanisms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822267953.0U CN209294534U (en) | 2018-12-29 | 2018-12-29 | A kind of more revolution straight stroke valve guide and limit mechanisms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209294534U true CN209294534U (en) | 2019-08-23 |
Family
ID=67649940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822267953.0U Active CN209294534U (en) | 2018-12-29 | 2018-12-29 | A kind of more revolution straight stroke valve guide and limit mechanisms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209294534U (en) |
-
2018
- 2018-12-29 CN CN201822267953.0U patent/CN209294534U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 215000 No.42, Guijia lane, Suzhou Industrial Park, Suzhou City, Jiangsu Province Patentee after: Harbin Electric Suzhou Dauson Valve Co.,Ltd. Country or region after: China Address before: 215000 No.42, Guijia lane, Suzhou Industrial Park, Suzhou City, Jiangsu Province Patentee before: SUZHOU DOUSON VALVE CO.,LTD. Country or region before: China |