CN209213162U - Valve position-limit mechanism - Google Patents
Valve position-limit mechanism Download PDFInfo
- Publication number
- CN209213162U CN209213162U CN201822145884.6U CN201822145884U CN209213162U CN 209213162 U CN209213162 U CN 209213162U CN 201822145884 U CN201822145884 U CN 201822145884U CN 209213162 U CN209213162 U CN 209213162U
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- China
- Prior art keywords
- valve
- valve rod
- apical grafting
- rectangular opening
- boss
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- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
Disclosed by the utility model is a kind of valve position-limit mechanism of technical field of valve manufacturing, including apical grafting disk and across the valve rod of apical grafting disk, the middle part of the apical grafting disk is equipped with rectangular opening, the valve rod cross section assumes diamond in shape, and circular arc chamfering is equipped on two opposite angles of diamond shape, chamfer radius is the half of two parallel edges distance of diamond shape, and the distance of two parallel edges of diamond shape is equal with the short side of square hole, and a longer diagonal line is less than the long side of rectangular opening in the valve rod cross section.The beneficial effects of the utility model are: by the way that rectangular opening is arranged on apical grafting disk, valve rod is arranged to the diamond structure to match with rectangular opening, the limit of valve switch position is realized using only two parts of valve rod and apical grafting disk, avoid the cumulative errors of multiple part cooperations, it causes valve switch out of alignment, can effectively ensure that the accuracy of valve limit.
Description
Technical field
The utility model relates to technical field of valve manufacturing more particularly to a kind of valve position-limit mechanisms.
Background technique
Existing valve mechanism, is generally made of valve rod and limiting device, and torsional forces needed for valve rotation is from work
Used in the torsion of valve rod.The limiting device of conventional design is to connect on disk to have on one or two symmetrical crescent moon annular groove and valve rod
Key cooperation, the positioning of the valve switch position of formation, but due to the gap accumulation between multiple parts, the switch of valve limits meeting
Occur not just.In use, since limit part limit part contact area is smaller, in valve use process, pass through
The weaker part of intensity will appear deformation after multiple-contact, eventually lead to the position of the switch of valve not just.For 90 ° of switch valves
Door, valve switch is out of alignment to will cause valve leak.
Utility model content
To overcome existing valve due to the accumulation of part gap and limit part contact area is smaller causes valve vulnerable etc.
Deficiency positions more accurate valve position restrainer the technical problem to be solved by the utility model is to provide a kind of structure is simpler
Structure.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
Valve position-limit mechanism, including apical grafting disk and across the valve rod of apical grafting disk, the middle part of the apical grafting disk is equipped with rectangular opening,
The valve rod cross section assumes diamond in shape, and circular arc chamfering is equipped on two opposite angles of diamond shape, and chamfer radius is that diamond shape two is parallel
The distance of the half of back gauge, two parallel edges of diamond shape is equal with the short side of square hole, longer in the valve rod cross section
One diagonal line is less than the long side of rectangular opening.
Further, the cross section of the valve rod is square.
Further, the valve rod includes round bar and boss, the diameter of the round bar and the short side of rectangular opening are equal, institute
Stating boss includes two, is located at the opposite two sides in round bar surface, and the boss is triangular prism structure, and its two sides and circle
Bar plane tangent.
Further, the angle of the boss two sides is 90 °.
Further, the seamed edge that the boss two sides are crossed is equipped with circular arc chamfering.
The beneficial effects of the utility model are: by the way that rectangular opening is arranged on apical grafting disk, valve rod is arranged to and rectangular opening
The diamond structure to match, the limit of valve switch position is realized using only two parts of valve rod and apical grafting disk, is avoided multiple
The cumulative errors of part cooperation, cause valve switch out of alignment, can effectively ensure that the accuracy of valve limit.
Detailed description of the invention
Fig. 1 is existing valve mechanism schematic diagram.
Fig. 2 is the utility model from standard-sized sheet to the structural schematic diagram closed entirely.
Fig. 3 is the utility model schematic perspective view.
Label is 1- apical grafting disk, 2- valve rod, 3- key, 11- rectangular opening, 12- annular groove, 21- round bar, 22- boss in figure.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
Match as shown in Figure 1, existing valve mainly passes through the annular groove 12 on the key 3 and apical grafting disk 1 being arranged on valve rod 2
The opening and closing to realize valve is closed, due to being easy to produce gap between key 3 and valve rod 2, and the size of key 3 is smaller, and intensity is weaker,
It is out of alignment using will lead to valve switch once for a long time, influence the control precision of valve.
The valve position-limit mechanism of the utility model, including apical grafting disk 1 and across the valve rod 2 of apical grafting disk 1, the apical grafting disk 1
Middle part be equipped with rectangular opening 11,2 cross section of valve rod assumes diamond in shape, and circular arc chamfering is equipped on two opposite angles of diamond shape,
Chamfer radius is the half of two parallel edges distance of diamond shape, and the distance of two parallel edges of diamond shape is equal with the short side of square hole, institute
State the long side that a longer diagonal line in 2 cross section of valve rod is less than rectangular opening 11.
As shown in Fig. 2, when valve is in standard-sized sheet, two parallel edges of diamond-shaped cross-section divide the work process of the utility model
It does not stick in two long sides of rectangular opening 11；When rotating clockwise valve rod 2, make the long-diagonal and rectangular opening 11 of diamond-shaped cross-section
When long side is parallel, valve is in half-open position；Valve rod 2 is continued to rotate, the two other parallel edges and rectangular opening of diamond-shaped cross-section are made
When 11 two long sides contact, valve is in full off state.The utility model eliminates traditional key, makes valve rod 2 and apical grafting disk 1
Direct positioning is realized, positioning accuracy improves, and 2 size of valve rod is larger, and it is wider with the contact surface of apical grafting disk 1, it will not be because strong
Spend the weak problem for causing valve switch out of alignment.
Existing valve generally is 90 ° of limit switches, and the cross section of the valve rod 2, which is arranged to square, can be realized valve
90 ° of limits of door.
Entire 2 section of valve rod, which is designed as diamond structure, will lead to the waste of material, in order to save material, by the valve
Bar 2 is designed to the structure type being made of round bar 21 and boss 22, as shown in figure 3, the two is preferably an integral molding structure, wherein
The diameter of the round bar 21 is equal with the short side of rectangular opening 11, and the boss 22 includes two, is located at 21 surface phase of round bar
Pair two sides, the boss 22 is triangular prism structure, and its two sides and 21 plane tangent of round bar, the height of boss 22 only need to omit
Higher than the thickness of apical grafting disk 1.
Since the angle of 22 two sides of boss is the angle that valve rod 2 is able to rotate, in order to realize general 90 ° of limits
Position, sets 90 ° for the angle of 22 two sides of boss.
In order to reduce the size of rectangular opening 11, while avoiding 22 edge of boss excessively sharp, in 22 two sides of boss
The seamed edge to be crossed is equipped with circular arc chamfering.
Valve rod is arranged to the diamond shape knot to match with rectangular opening by the way that rectangular opening is arranged on apical grafting disk by the utility model
Structure, the limit of valve switch position are realized using only two parts of valve rod and apical grafting disk, avoid the accumulative of multiple part cooperations
Error causes valve switch out of alignment, can effectively ensure that the accuracy of valve limit, before having good practicability and application
Scape.
Claims (5)
1. valve position-limit mechanism, including apical grafting disk (1) and across the valve rod (2) of apical grafting disk (1), it is characterized in that: the apical grafting disk
(1) middle part is equipped with rectangular opening (11), and valve rod (2) cross section assumes diamond in shape, and circle is equipped on two opposite angles of diamond shape
Arc chamfering, chamfer radius are the half of two parallel edges distance of diamond shape, the distance of two parallel edges of diamond shape and the short side of square hole
Equal, a longer diagonal line is less than the long side of rectangular opening (11) in valve rod (2) cross section.
2. valve position-limit mechanism as described in claim 1, it is characterized in that: the cross section of the valve rod (2) is square.
3. valve position-limit mechanism as described in claim 1, it is characterized in that: the valve rod (2) includes round bar (21) and boss
(22), the diameter of the round bar (21) is equal with the short side of rectangular opening (11), and the boss (22) includes two, is located at circle
The opposite two sides in bar (21) surface, the boss (22) are triangular prism structure, and its two sides and round bar (21) plane tangent.
4. valve position-limit mechanism as claimed in claim 3, it is characterized in that: the angle of the boss (22) two sides is 90 °.
5. valve position-limit mechanism as claimed in claim 3, it is characterized in that: on the seamed edge that the boss (22) two sides are crossed
Equipped with circular arc chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145884.6U CN209213162U (en) | 2018-12-20 | 2018-12-20 | Valve position-limit mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145884.6U CN209213162U (en) | 2018-12-20 | 2018-12-20 | Valve position-limit mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209213162U true CN209213162U (en) | 2019-08-06 |
Family
ID=67465343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822145884.6U Active CN209213162U (en) | 2018-12-20 | 2018-12-20 | Valve position-limit mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209213162U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577958A (en) * | 2020-04-26 | 2020-08-25 | 西诺威阀门控制（苏州）有限公司 | Limit structure for fixing valve rod switch of ball valve |
-
2018
- 2018-12-20 CN CN201822145884.6U patent/CN209213162U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577958A (en) * | 2020-04-26 | 2020-08-25 | 西诺威阀门控制（苏州）有限公司 | Limit structure for fixing valve rod switch of ball valve |
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