CN208634498U - A kind of valve rod anti-rotation device of tube-in-tube structure - Google Patents
A kind of valve rod anti-rotation device of tube-in-tube structure Download PDFInfo
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- CN208634498U CN208634498U CN201821331407.2U CN201821331407U CN208634498U CN 208634498 U CN208634498 U CN 208634498U CN 201821331407 U CN201821331407 U CN 201821331407U CN 208634498 U CN208634498 U CN 208634498U
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- valve rod
- connecting shaft
- jackscrew
- rod connecting
- sleeve
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Abstract
The utility model announces a kind of valve rod anti-rotation device of tube-in-tube structure, belongs to hydraulic valve technology.Including end cap and valve rod connecting shaft, valve rod connecting shaft inner end is located in end cap, and valve rod connecting shaft outer end is connect with valve rod；Valve rod connecting shaft inner end side is provided with an elongated deep gouge；It is connected through a screw thread in the end cap and jackscrew is installed；The inner end of the jackscrew is located in deep gouge；Sleeve is installed in the inner ends thereof of jackscrew, sleeve is slidably mounted in deep gouge.The utility model realizes that cooperation contacts with the deep gouge of valve rod connecting shaft by the cylindrical side of sleeve, in this way, rotation of the valve rod under hydraulic power effect can be effectively prevent, realizes hydraulic valve rotation preventing function；Secondly, sleeve rotating can lay down part hydraulic power, the stability of flow control accuracy and flow is improved.
Description
Technical field
The utility model relates to hydraulic valve technology, the valve rod anti-rotation device of specifically a kind of tube-in-tube structure.
Background technique
High pressure, big flow are the development trends of hydraulic system and hydraulic components.But high pressure, the liquid stream of big flow are generated
The stability of position and valve rod state of the hydraulic power to valve rod in spool bore can all generate unfavorable factor.Because of high pressure, big stream
The influence for measuring hydraulic power, leads to the unstable of position and state of the valve rod in spool bore, to make valve rod opening throttling channel
Area changes, and then the liquid stream for crossing pasta product by throttling channel is caused to change with the variation of valve rod.
Such as a kind of anti-rotational formula safety valve (106382399 A of CN) that Chinese patent is announced, wherein body base is set
There is valve port, side wall is equipped with steam drain, is equipped with the valve rod with spring in valve body, the spool of stem bottom is connected at valve port, spool
Two sides offer first sliding groove, and body cavity is equipped with the position limiting slide block for being suitable for first sliding groove；Valve stem tip is equipped with slide bar, slide bar
Inside is cavity structure, and slide bar inner sidewall offers second sliding slot, and the top of valve rod is set in slide bar cavity, and valve stem tip is also set
There is protruding portion, protruding portion is fastened in second sliding slot.Wherein the problem is that:
Its anti-rotational form, structure is complicated, is not easy to assemble, it is difficult to realize, operability is not strong；
Anti-rotational formula safety valve structure form is only applicable to definite value structure of relief valve, cannot carry out to pressure limit effective
It adjusts；It is unfavorable for marketing.
Summary of the invention
In order to solve the above technical problems, the utility model provides a kind of valve rod anti-rotation device of tube-in-tube structure.
The utility model is achieved through the following technical solutions: a kind of valve rod anti-rotation device of tube-in-tube structure, including end cap
With valve rod connecting shaft, valve rod connecting shaft inner end is located in end cap, and valve rod connecting shaft outer end is connect with valve rod；The valve rod connecting shaft
Inner end side is provided with an elongated deep gouge；It is connected through a screw thread in the end cap and jackscrew is installed；The inner end position of the jackscrew
In deep gouge；Sleeve is installed in the inner ends thereof of jackscrew, sleeve is slidably mounted in deep gouge.
It is preferred: tapped through hole to be provided on the end cap, jackscrew is connected through a screw thread the tapped through hole being mounted on end cap
In；Jackscrew outer end has hexagonal counterbore, and jackscrew inner end is a cylindrical shaft；The sleeve is sleeved on the cylindrical shaft of jackscrew inner end
On, the screw for positioning to sleeve is installed in cylindrical shaft lower end.
Preferred: the deep gouge left and right ends are semicircle；It is small―gap suture cooperation, set between the sleeve and deep gouge side wall
It is wide arc gap cooperation between cylinder and jackscrew cylindrical shaft.
Preferred: the valve rod connecting shaft is the small second order Step Shaft of outer diameter, and valve rod connecting shaft outer end is provided with outer spiral shell
Line；Valve rod connecting shaft outer end is connected through a screw thread to be connect with valve rod；The front and back side milling of valve rod connecting shaft inner end has opposite plane.
Preferred: the jackscrew is mutually perpendicular to valve rod connecting shaft.
Compared with prior art, the utility model has the beneficial effects that
Realize that cooperation contacts with the deep gouge of valve rod connecting shaft by the cylindrical side of sleeve, in this way, valve rod can be effectively prevent
Rotation under hydraulic power effect, realizes hydraulic valve rotation preventing function；
Secondly, sleeve rotating can lay down part hydraulic power, the stability of flow control accuracy and flow is improved；
Meanwhile displacement of valve rod makes deep gouge both ends and the barrel contacts of valve rod connecting shaft, plays maximum valve rod travel limit
Function；According to the deep gouge of different length and different distributions, non-equivalence at A, B mouthfuls of maximum flow may be implemented and adjust.
Detailed description of the invention
Fig. 1 is the utility model structure diagram；
Fig. 2 is valve rod connecting axle structure schematic diagram；
Fig. 3 is jackscrew structural schematic diagram；
Fig. 4 is tube-in-tube structure schematic diagram；
In figure: 1, end cap；2, valve rod connecting shaft；2-1, deep gouge；3, jackscrew；4, sleeve；5, screw.
Specific embodiment
It is a specific embodiment of the utility model below, the utility model is described further now in conjunction with attached drawing.
In conjunction with shown in Fig. 1 to Fig. 3, a kind of valve rod anti-rotation device of tube-in-tube structure, including end cap 1 and valve rod connecting shaft 2,
2 inner end of valve rod connecting shaft is located in end cap 1, and 2 outer end of valve rod connecting shaft is connect with valve rod.
Valve rod connecting shaft 2 is the small second order Step Shaft of outer diameter, and 2 outer end of valve rod connecting shaft is provided with external screw thread, passes through valve
External screw thread in bar connecting shaft 2 makes it form reliable connection with valve rod.The front and back side milling of 2 inner end of valve rod connecting shaft has opposite
Plane, 2 inner end upper side of valve rod connecting shaft are provided with an elongated deep gouge 2-1, and the left and right ends deep gouge 2-1 are semicircle.
Tapped through hole is provided on end cap 1, jackscrew 3 is connected through a screw thread in the tapped through hole being mounted on end cap 1, jackscrew 3
It is mutually perpendicular to valve rod connecting shaft 2；3 outer end of jackscrew has hexagonal counterbore, easy to disassemble.3 inner end of jackscrew is a cylindrical shaft, set
Cylinder 4 is rotatably sleeved on the cylindrical shaft of 3 inner end of jackscrew, and sleeve 4 is slidably mounted in deep gouge 2-1, is installed in cylindrical shaft lower end
There is the screw 5 for positioning to sleeve 4.It is small―gap suture cooperation, sleeve 4 and 3 cylinder of jackscrew between sleeve 4 and deep gouge 2-1 side wall
It is wide arc gap cooperation between axis.
The cylindrical side of sleeve 4 is matched with deep gouge 2-1 in valve rod connecting shaft 2, is formed and is stablized surface contact structure form, is protected
The stability for having demonstrate,proved limit can effectively prevent rotation of the valve rod under hydraulic power effect, improve the stabilization for passing through valve rod oil liquid
Property and flow accuracy.Secondly, the rotation of sleeve 4 can lay down part hydraulic power, the stability of flow control accuracy and flow is improved.
The utility model not only prevents rotation of the valve rod under hydraulic power effect, reduces the risk of spool clamping stagnation, and can effectively mention
Precision, the stability of high flow capacity, and evaded influence of the hydraulic power to valve rod stability, improve hydraulic valve anti-interference ability.
Claims (5)
1. a kind of valve rod anti-rotation device of tube-in-tube structure, including end cap (1) and valve rod connecting shaft (2), valve rod connecting shaft (2) is interior
End is located in end cap (1), and valve rod connecting shaft (2) outer end is connect with valve rod；
It is characterized by:
Valve rod connecting shaft (2) the inner end side is provided with an elongated deep gouge (2-1)；
It is connected through a screw thread in the end cap (1) and jackscrew (3) is installed；The inner end of the jackscrew (3) is located in deep gouge (2-1)；
It is equipped with sleeve (4) in the inner ends thereof of jackscrew (3), sleeve (4) is slidably mounted in deep gouge (2-1).
2. a kind of valve rod anti-rotation device of tube-in-tube structure according to claim 1, it is characterised in that: the end cap (1)
On be provided with tapped through hole, jackscrew (3) is connected through a screw thread in the tapped through hole being mounted on end cap (1)；Jackscrew (3) outer end has
Hexagonal counterbore, jackscrew (3) inner end are a cylindrical shafts；The sleeve (4) is sleeved on the cylindrical shaft of jackscrew (3) inner end, in circle
Axis of a cylinder lower end is equipped with the screw (5) for positioning to sleeve (4).
3. a kind of valve rod anti-rotation device of tube-in-tube structure according to claim 2, it is characterised in that: the deep gouge (2-
1) left and right ends are semicircle；It is small―gap suture cooperation, sleeve (4) and jackscrew between the sleeve (4) and deep gouge (2-1) side wall
It (3) is wide arc gap cooperation between cylindrical shaft.
4. a kind of valve rod anti-rotation device of tube-in-tube structure according to claim 1, it is characterised in that: the valve rod connection
Axis (2) is the small second order Step Shaft of outer diameter, and valve rod connecting shaft (2) outer end is provided with external screw thread；Valve rod connecting shaft (2) outer end is logical
Threaded connection is crossed to connect with valve rod；The front and back side milling of valve rod connecting shaft (2) inner end has opposite plane.
5. a kind of valve rod anti-rotation device of tube-in-tube structure according to claim 1, it is characterised in that: the jackscrew (3)
It is mutually perpendicular to valve rod connecting shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821331407.2U CN208634498U (en) | 2018-08-17 | 2018-08-17 | A kind of valve rod anti-rotation device of tube-in-tube structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821331407.2U CN208634498U (en) | 2018-08-17 | 2018-08-17 | A kind of valve rod anti-rotation device of tube-in-tube structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208634498U true CN208634498U (en) | 2019-03-22 |
Family
ID=65741762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821331407.2U Active CN208634498U (en) | 2018-08-17 | 2018-08-17 | A kind of valve rod anti-rotation device of tube-in-tube structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208634498U (en) |
-
2018
- 2018-08-17 CN CN201821331407.2U patent/CN208634498U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210517 Address after: 221004 No.18 Taoshan Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Amakai Hydraulic Technology Co.,Ltd. Address before: 221004 No.18, Taoshan Road, Jinshanqiao Development Zone, Xuzhou City, Jiangsu Province Patentee before: XCMG XUZHOU XUGONG HYDRAULIC PARTS Co.,Ltd. |
|
| TR01 | Transfer of patent right |