CN219755500U - Double-acting pneumatic control valve driving device - Google Patents
Double-acting pneumatic control valve driving device Download PDFInfo
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- CN219755500U CN219755500U CN202321148985.3U CN202321148985U CN219755500U CN 219755500 U CN219755500 U CN 219755500U CN 202321148985 U CN202321148985 U CN 202321148985U CN 219755500 U CN219755500 U CN 219755500U
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- worm
- screw rod
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- screw
- sliding block
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
Abstract
The utility model relates to the technical field of valve driving devices, in particular to a double-acting pneumatic control valve driving device, wherein a double-acting cylinder is coaxially connected with an input shaft and is used for pneumatically driving the input shaft to rotate, the other end of a worm, which is coaxially far away from the input shaft, is provided with a screw rod extending out of a box body, a locknut is arranged on the screw rod, a screw rod sliding block is arranged between the locknut and the worm, the screw rod sliding block is in threaded fit with the screw rod, a plurality of track grooves are uniformly arranged on the peripheral wall of the screw rod sliding block, a shell is sleeved outside the screw rod, the shell is fixedly connected with the box body, a plurality of guide grooves matched with the track grooves are uniformly arranged on the inner wall of the shell, and when the screw rod rotates, the screw rod sliding block is in reciprocating motion along the axial direction of the screw rod through the matching of the track grooves and the guide grooves, and a limit structure of the screw rod sliding block coaxially arranged with the worm is used for limiting the worm wheel to drive the valve.
Description
Technical Field
The utility model relates to the technical field of valve driving devices, in particular to a double-acting pneumatic control valve driving device.
Background
The valve driving device in the prior art generally adopts a worm and gear structure for meshing transmission, a pneumatic actuator is adopted as a power source, the pneumatic actuator outputs power to drive a worm to rotate, a worm wheel meshed with the worm transmission rotates to drive a valve rod connected with the worm wheel in a clamping mode to rotate so as to open and close a valve, the structure of the worm and the gear generally needs a limiting device, two limiting bolts are radially arranged on a worm wheel box body to limit the worm wheel, the worm wheel cannot rotate until being abutted with the limiting bolts, and the output end of the worm wheel is limited in a certain angle range.
The worm wheel of the valve driving device is usually a sector worm wheel, the limiting device is arranged on one side of the sector worm wheel, and when the sector worm wheel rotates, a large moment can cause the sector worm wheel to strike the limiting bolt, so that the limiting bolt and the turbine box body are easily damaged to a certain extent, and the service life of the valve driving device is reduced.
Disclosure of Invention
The utility model aims to overcome the defects and the shortcomings of the prior art and provides a double-acting pneumatic control valve driving device.
The technical scheme adopted by the utility model is as follows: the utility model provides a double-acting pneumatic control valve drive arrangement, includes double-acting cylinder, box, worm wheel and worm, worm and worm wheel set up in the box and both periphery are the meshing transmission, the coaxial input shaft that extends to the box that is provided with of worm, the worm wheel coaxial is provided with valve headstock gear complex output groove, double-acting cylinder and input shaft coaxial coupling, and be used for pneumatic drive the input shaft is rotatory, the other end that the input shaft was kept away from to the worm is provided with the lead screw that extends to the box coaxially, be equipped with locknut on the lead screw, be equipped with the lead screw slider between locknut and the worm, lead screw slider and lead screw threaded fit, evenly be equipped with a plurality of track groove on the peripheral wall of lead screw slider, the lead screw overcoat has the casing, casing and box fixed connection, the casing inner wall evenly is equipped with the guide way of a plurality of and track groove looks adaptation, and lead screw slider passes through track groove and guide way cooperation along lead screw axial direction reciprocating motion when the lead screw rotates.
Preferably, a limit nut is further arranged between the locknut and the screw rod sliding block.
Preferably, the axial two ends of the screw rod sliding block are respectively provided with a double-stacked self-locking gasket, the double-stacked self-locking gasket comprises a male gasket and a female gasket, the male gasket and the female gasket are respectively provided with an oblique tooth surface, and the male gasket and the female gasket are meshed through the oblique tooth surfaces.
Preferably, a limiting baffle ring is fixedly connected between the shell and the box body, a through hole for the worm to pass through is formed in the limiting baffle ring, and the diameter of the through hole is larger than that of the worm and smaller than that of the screw rod sliding block.
Preferably, the circumference of the worm wheel is provided with threads, and the worm wheel can rotate three hundred sixty degrees through the worm.
Preferably, bearings are arranged at the matching positions of the two ends of the worm and the box body.
The beneficial effects of the utility model are as follows: the screw rod can drive the screw rod slide block to reciprocate along the guide groove of the shell when rotating, and the screw rod can not rotate to limit the coaxial worm to stop moving when the screw rod slide block is propped against the locknut, and the limit structure of the screw rod slide block coaxially arranged with the worm is used for limiting the worm wheel and worm drive valve, so that the screw rod drive valve has the advantages of being simple and stable in structure and prolonging the service lives of the worm wheel and the box body.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.
FIG. 1 is a schematic cross-sectional view of a double acting pneumatic valve actuator of the present utility model;
FIG. 2 is an enlarged schematic view of FIG. 1 at A;
FIG. 3 is a schematic diagram of a dual function pneumatic valve actuator assembly according to the present utility model;
FIG. 4 is a schematic view of the structure of the screw slider according to the present utility model;
FIG. 5 is a schematic view of the structure of the housing according to the present utility model;
FIG. 6 is a schematic diagram of an exploded construction of a double stack self-locking gasket of the present utility model;
in the figure, a 1-double-acting cylinder, a 2-box body, a 3-worm wheel, a 4-worm, a 5-input shaft, a 6-output groove, a 7-screw rod, an 8-locknut, a 9-screw rod sliding block, a 10-track groove, an 11-shell, a 12-guide groove, a 13-limit nut, a 14-double-stack self-locking washer, a 15-male washer, a 16-female washer, a 17-skewed tooth surface, an 18-limit baffle ring and a 19-bearing are arranged.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.
It should be noted that, in the embodiments of the present utility model, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.
The terms of direction and position in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the utility model and are not intended to limit the scope of the utility model.
As shown in fig. 1 to 6, in an embodiment of the present utility model, a double-acting pneumatic valve driving device includes a double-acting cylinder 1, a box 2, a worm wheel 3, and a worm 4, where the worm 4 and the worm wheel 3 are disposed in the box 2 and are in engaged transmission with each other, the worm 4 is coaxially provided with an input shaft 5 extending out of the box 2, the worm wheel 3 is coaxially provided with an output groove 6 matched with a valve opening and closing member, the double-acting cylinder 1 is coaxially connected with the input shaft 5 and is used for pneumatically driving the input shaft 5 to rotate, the other end of the worm 4, which is coaxially far from the input shaft 5, is provided with a screw rod 7 extending out of the box 2, a locknut 8 is disposed on the screw rod 7, a screw rod slider 9 is disposed between the locknut 8 and the worm 4, the screw rod slider 9 is in threaded fit with the screw rod 7, a plurality of track grooves 10 are uniformly disposed on a peripheral wall of the screw rod slider 9, the screw rod 7 is sleeved with a housing 11, the housing 11 is fixedly connected with the box 2, an inner wall of the housing 11 is uniformly provided with a plurality of guide grooves 12 adapted to the track grooves 10, and the guide grooves 12 are matched with the screw rod slider 7 in the axial direction of the screw rod slider 7 when the screw rod slider moves along the axial direction of the guide grooves 12. The screw rod can drive the screw rod slide block to reciprocate along the guide groove of the shell when rotating, and the screw rod can not rotate to limit the coaxial worm to stop moving when the screw rod slide block is propped against the locknut, and the limit structure of the screw rod slide block coaxially arranged with the worm is used for limiting the worm wheel and worm drive valve, so that the screw rod drive valve has the advantages of being simple and stable in structure and prolonging the service lives of the worm wheel and the box body.
And a limit nut 13 is further arranged between the locknut 8 and the screw rod sliding block 9. The wedge-type design in the limit nut is matched with the limit nut to bite into a whole, so that the anti-loosening effect is further improved, the reciprocating motion stroke of the screw rod sliding block is influenced by manually adjusting the position of the limit nut on the screw rod, the stroke range of the worm gear and the worm rod can be adjusted, and the opening range of the valve is further limited.
The two axial ends of the screw rod sliding block 9 are respectively provided with a double-stacked self-locking gasket 14, the double-stacked self-locking gasket 14 comprises a male gasket 15 and a female gasket 16, the male gasket 15 and the female gasket 16 are respectively provided with an oblique tooth surface 17, and the male gasket 15 and the female gasket 16 are meshed through the oblique tooth surfaces 17. A limiting baffle ring 18 is fixedly connected between the shell 11 and the box body 2, a through hole for the worm 4 to pass through is formed in the limiting baffle ring 18, and the diameter of the through hole is larger than that of the worm 4 and smaller than that of the screw rod sliding block 9. The double-stacked self-locking gasket has the structures of the male gasket and the female gasket, and the bevel gear faces on the male gasket and the female gasket are meshed with each other, the tension between the two gaskets is utilized to achieve the double effects of loosening and tightening, the double-stacked self-locking gasket is arranged at two ends of the screw rod sliding block, friction force is increased when the screw rod sliding block moves to be propped against the limit nut or the limit stop ring, the screw rod sliding block is prevented from sliding excessively to damage the limit nut and the limit stop ring, and the stroke control of the driving device is prevented from being influenced. The limit baffle ring protects the box body and the shell, and damage to the box body and the shell caused by collision of the screw rod sliding block is prevented.
The circumference of the worm wheel 3 is provided with threads, and the worm wheel 3 can rotate three hundred sixty degrees through the worm 4. The double-acting cylinder can output power in two directions, so that the worm can rotate positively and reversely, and the valve driving device can rotate freely to any opening degree by matching with a worm wheel with three hundred and sixty degrees.
Bearings 19 are arranged at the matching positions of the two ends of the worm 4 and the box body 2. The rotation and smoothness of the worm are protected through the bearing, and the bending caused by uneven stress of the worm is prevented.
The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.
Claims (6)
1. The utility model provides a double-acting pneumatic control valve drive arrangement, includes double-acting cylinder (1), box (2), worm wheel (3) and worm (4), worm (4) and worm wheel (3) set up in box (2) and both periphery are the meshing transmission, worm (4) coaxial are provided with input shaft (5) that extend to outside box (2), worm wheel (3) coaxial are provided with valve opening and closing member complex output groove (6), double-acting cylinder (1) and input shaft (5) coaxial coupling, and be used for pneumatic drive input shaft (5) are rotatory, its characterized in that: the utility model discloses a lead screw, including box (2), worm (4), screw (7), lock nut (8), screw slider (9) and screw (7) screw thread fit, evenly be equipped with a plurality of track groove (10) on screw slider (9) the peripheral wall, screw (7) overcoat has casing (11), casing (11) and box (2) fixed connection, casing (11) inner wall evenly is equipped with guide way (12) of a plurality of and track groove (10) looks adaptation, and screw slider (9) are through track groove (10) and guide way (12) cooperation along screw (7) axial direction reciprocating motion when screw (7) rotate.
2. A double acting pneumatic control valve actuation device according to claim 1, wherein: and a limit nut (13) is further arranged between the locknut (8) and the screw rod sliding block (9).
3. A double acting pneumatic control valve actuation device according to claim 1, wherein: the screw rod sliding block (9) is characterized in that double-stack self-locking washers (14) are arranged at two axial ends of the screw rod sliding block, each double-stack self-locking washer (14) comprises a male washer (15) and a female washer (16), oblique tooth surfaces (17) are arranged on each of the male washer (15) and the female washer (16), and the male washer (15) and the female washer (16) are meshed through the oblique tooth surfaces (17).
4. A double acting pneumatic control valve actuation device according to claim 1, wherein: a limiting baffle ring (18) is fixedly connected between the shell (11) and the box body (2), a through hole for the worm (4) to pass through is formed in the limiting baffle ring (18), and the diameter of the through hole is larger than that of the worm (4) and smaller than that of the screw rod sliding block (9).
5. A double acting pneumatic control valve actuation device according to claim 1, wherein: the circumference of the worm wheel (3) is provided with threads, and the worm wheel (3) can rotate three hundred sixty degrees through the worm (4).
6. A double acting pneumatic control valve actuation device according to claim 1, wherein: bearings (19) are arranged at the matching positions of the two ends of the worm (4) and the box body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321148985.3U CN219755500U (en) | 2023-05-11 | 2023-05-11 | Double-acting pneumatic control valve driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321148985.3U CN219755500U (en) | 2023-05-11 | 2023-05-11 | Double-acting pneumatic control valve driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219755500U true CN219755500U (en) | 2023-09-26 |
Family
ID=88078028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321148985.3U Active CN219755500U (en) | 2023-05-11 | 2023-05-11 | Double-acting pneumatic control valve driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219755500U (en) |
-
2023
- 2023-05-11 CN CN202321148985.3U patent/CN219755500U/en active Active
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