CN111486262A - Limiting mechanism of multi-circle stroke valve electric control device - Google Patents
Limiting mechanism of multi-circle stroke valve electric control device Download PDFInfo
- Publication number
- CN111486262A CN111486262A CN202010492436.2A CN202010492436A CN111486262A CN 111486262 A CN111486262 A CN 111486262A CN 202010492436 A CN202010492436 A CN 202010492436A CN 111486262 A CN111486262 A CN 111486262A
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- driven gear
- cam
- driving wheel
- wheel disc
- control device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention provides a limiting mechanism of an electric control device of a multi-circle stroke valve, which comprises a driving wheel disc and a driven gear which are coaxially arranged, wherein the edge of the driving wheel disc extends outwards along the radial direction to form a convex tooth section, a linkage gear is arranged on one side of the driving wheel disc and is simultaneously meshed with the convex tooth section of the driving wheel disc and the driven gear, a cam is arranged on the driven gear, the cam and the driven gear synchronously rotate, the rotating part and the driven gear synchronously move, a touch switch is arranged on one side of the cam, and when the cam rotates, a protruding part can touch the touch switch. The invention adopts a mode of arranging the convex tooth section on the driving wheel disc, the linkage gear drives the driven gear to rotate discontinuously, so as to drive the cam to rotate, when the driving wheel disc rotates for a plurality of circles, the linkage gear and the driven gear driven by the convex tooth section can rotate for a certain angle, so that the cam is contacted with the touch switch, and then the touch switch is utilized to cut off the power supply of the motor of the electric actuating mechanism, thereby protecting the valve.
Description
Technical Field
The invention belongs to the technical field of valve control, and particularly relates to a multi-circle stroke limiting mechanism.
Background
In order to facilitate the control of the opening and closing of the valve, an electric actuator is usually installed on the valve to electrically control the valve, and the electric actuator used on the valve is generally divided into two structural driving modes of multi-rotation and partial rotation, wherein the multi-rotation electric actuator is usually applied to valves such as gate valves and knife gate valves which need multi-rotation operation to change the switching state, and the partial rotation electric actuator is usually applied to valves such as butterfly valves and ball valves which need 90-degree rotation operation to change the switching state.
In order to control the limit switch position of the valve, the conventional multi-turn valve usually limits the working time of a motor or the number of working turns of the motor, but does not rigidly limit the working of an electric actuator, so that in some specific environments (such as high temperature and low temperature), a controller of the electric actuator is easy to damage, the motor cannot be controlled in a power-off mode, the valve is easy to damage under excessive number of turning turns, the valve fails, and production accidents are caused.
Disclosure of Invention
In view of this, the present invention provides a limiting mechanism for an electric control device of a multi-turn valve, so as to limit a multi-turn electric actuator and prevent the number of turns of the electric actuator from being transited.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a limiting mechanism of an electric control device of a multi-circle stroke valve comprises a driving wheel disc and a driven gear which are coaxially arranged, wherein a convex tooth section radially extends outwards from the edge of the driving wheel disc, a linkage gear is arranged on one side of the driving wheel disc, the lower portion of the linkage gear is meshed with the convex tooth section of the driving wheel disc, the upper portion of the linkage gear is meshed with the driven gear, a cam is arranged on the driven gear and comprises a rotating portion and a protruding portion, the rotating portion is coaxially connected with the driven gear and synchronously moves with the driven gear, a touch switch is arranged on one side of the cam, and when the cam rotates, the protruding portion can touch the touch switch.
Furthermore, the driving wheel disc also comprises an idle rotation section, the convex tooth section and the idle rotation section are combined into a circle, and the side wall of the idle rotation section is a smooth surface.
Furthermore, the axle center of the driven gear upwards extends out of a rotating sleeve, a through hole is formed in the rotating portion of the cam, and the rotating portion is sleeved on the rotating sleeve through the through hole.
Furthermore, the side wall of the rotating part is provided with a first screw hole, a first jackscrew is in threaded connection with the first screw hole, and the end part of the first jackscrew can be abutted against the outer wall of the rotating sleeve.
Furthermore, the limiting mechanism further comprises a stroke shaft, wherein a fixed sleeve extends upwards from the middle of the driving wheel disc, and the fixed sleeve is sleeved on the stroke shaft.
Furthermore, a second screw hole is formed in the side wall of the fixing sleeve, a second jackscrew is in threaded connection with the second screw hole, and the second jackscrew can abut against the stroke shaft.
Furthermore, the driven gear is rotatably sleeved on the stroke shaft, and the lower surface of the driven gear wheel sheet abuts against the upper end surface of the fixed sleeve.
Furthermore, the limiting mechanism further comprises a linkage shaft, and the linkage gear is sleeved on the linkage shaft.
Further, the linkage shaft and the stroke shaft are arranged in parallel.
Compared with the prior art, the limiting mechanism of the electric control device of the multi-circle stroke valve has the following advantages:
the invention adopts a mode of arranging the convex tooth section on the driving wheel disc, and the linkage gear drives the driven gear to rotate discontinuously, so as to drive the cam to rotate, so that when the driving wheel disc rotates for a plurality of circles, the linkage gear and the driven gear driven by the convex tooth section can rotate for a certain angle, the cam is in contact with the touch switch, and then the touch switch is utilized to cut off the power supply of the motor of the electric actuating mechanism, thereby protecting the electric actuating mechanism and the valve;
adopt first jackscrew to fix cam and driven gear, the second jackscrew is fixed initiative rim plate and stroke axle to dismantle the position of adjustment initiative rim plate and cam at any time in the installation, play spacing and protection effect with touch switch in order to guarantee the cam.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic cross-sectional view of a spacing mechanism;
FIG. 2 is a three-dimensional schematic view of the overall structure of the limiting mechanism;
fig. 3 is an exploded view of fig. 2.
Description of reference numerals:
1-a stroke axis; 11-a driving wheel disc; 112-idle section; 113-a lobe segment; 114-a fixed sleeve; 115-second screw hole; 116-a second jackscrew; 12-a driven gear; 121-rotating the sleeve; 13-a cam; 131-a rotating part; 132-a first screw hole; 134-a boss; 135-first jackscrew; 2-a linkage shaft; 21-a linkage gear; 3-touching the switch.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The invention relates to a limiting mechanism of an electric control device of a multi-turn stroke valve, which comprises a stroke shaft 1 and a linkage shaft 2, wherein a driving wheel disc 11 and a driven gear 12 are arranged on the stroke shaft 1 from bottom to top, the driving wheel disc 11 and the stroke shaft 1 synchronously rotate, the driven gear 12 can rotate relative to the stroke shaft 1, a linkage gear 21 is sleeved on the linkage shaft 2, a convex tooth section 113 extends outwards from the edge of part of the driving wheel disc 11 along the radial direction, concretely, the driving wheel disc 11 comprises an idle rotation section 112, the convex tooth section 113 and the idle rotation section 112 are combined into a circle, the side wall of the idle rotation section 112 is a smooth surface, the lower part of the linkage gear 21 is meshed with the convex tooth section 113 of the driving wheel disc 11, the upper part is meshed with the driven gear 12, a cam 13 is arranged on the driven gear 12, the cam 13 comprises a rotation part 131 and a bulge 134, and the rotation part 131 is coaxially connected with the driven gear 12, and the rotating part 131 and the driven gear 12 move synchronously, a touch switch 3 is arranged on one side of the cam 13, when the cam 13 rotates, the boss 134 can touch the touch switch 3, the touch switch 3 can control the switch of the motor of the electric actuator, in the work, the stroke shaft 1 is coaxially connected with the valve rod of the valve, the motor of the electric actuator drives the valve rod of the valve to rotate through the stroke shaft 1, meanwhile, due to the gear linkage, the cam 13 rotates, when the boss 134 touches the touch switch 3, the valve rod of the valve is judged to move to the limit position, at the moment, the touch switch 3 cuts off the power supply of the motor, the motor stops working, and the valve rod of the valve is protected from being excessively turned.
In order to facilitate the positioning of the cam 13 during the installation of the electric actuator, a fixed sleeve 114 extends upwards from the middle of the active wheel disc 11, the fixed sleeve 114 is sleeved on the stroke shaft 1, the side wall of the fixed sleeve 114 is provided with a second screw hole 115, a second jackscrew 116 is in threaded connection with the second screw hole 115, and the second jackscrew 116 can prop against the stroke shaft 1, the driven gear 12 is rotatably sleeved on the stroke shaft 1, and the lower surface of the wheel sheet of the driven gear 12 is abutted against the upper end surface of the fixed sleeve 114, the axis of the driven gear 12 extends upwards to form a rotating sleeve 121, a through hole is arranged on the rotating part 131 of the cam 13, the rotating part 131 is sleeved on the rotating sleeve 121 through the through hole, the side wall of the rotating part 131 is provided with a first screw hole 132, a first jackscrew 135 is screwed with the first screw hole 132, and the end of the first jackscrew 135 can be abutted against the outer wall of the rotating sleeve 121.
In the installation process of the limiting mechanism of the multi-circle stroke valve electric control device, the valve is firstly opened or closed to a limit position, then the cam 13 is firstly rotated to a position where the cam can touch the touch switch 3, the convex tooth section 113 of the driving wheel disc 11 is meshed with the linkage gear 21, the second jackscrew 116 is locked, the driven gear 12 is meshed with the upper part of the linkage gear 21, and the first jackscrew 135 is locked, so that the installation is completed; in the course of the work, electric actuator's motor passes through stroke axle 1 and drives the valve rod rotation of valve, simultaneously, because gear linkage, cam 13 takes place to rotate, when bellying 134 touched touch switch 3, then judges that the valve rod of valve moves to extreme position, touch switch 3 pinches off the motor power this moment, stops motor work this moment, and electric actuator's structure and touch switch how to control the motor outage and be prior art, do not give unnecessary details here.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a many rings of stroke valve electric control device stop gear which characterized in that: the automatic transmission mechanism comprises a driving wheel disc (11) and a driven gear (12) which are coaxially arranged, wherein a convex tooth section (113) is arranged at the edge of the driving wheel disc (11), a linkage gear (21) is arranged on one side of the driving wheel disc (11), the lower part of the linkage gear (21) is meshed with the convex tooth section (113) of the driving wheel disc (11), the upper part of the linkage gear is meshed with the driven gear (12), a cam (13) is arranged on the driven gear (12), the cam (13) comprises a rotating part (131) and a protruding part (134), the rotating part (131) is coaxially connected with the driven gear (12), the rotating part (131) and the driven gear (12) synchronously move, a touch switch (3) is arranged on one side of the cam (13), and when the cam (13) rotates, the protruding part (134) can touch the touch switch (3).
2. The limit mechanism of the multi-circle stroke valve electric control device according to claim 1, characterized in that: the driving wheel disc further comprises an idle rotation section (112), the convex tooth section (113) and the idle rotation section (112) are combined into a circle, and the side wall of the idle rotation section (112) is a smooth surface.
3. The limit mechanism of the multi-circle stroke valve electric control device according to claim 1, characterized in that: the axis of the driven gear (12) extends upwards to form a rotating sleeve (121), a through hole is formed in a rotating part (131) of the cam (13), and the rotating part (131) is sleeved on the rotating sleeve (121) through the through hole.
4. The limit mechanism of the multi-circle stroke valve electric control device according to claim 3, characterized in that: the side wall of the rotating part (131) is provided with a first screw hole (132), a first jackscrew (135) is in threaded connection with the first screw hole (132), and the end part of the first jackscrew (135) can be abutted against the outer wall of the rotating sleeve (121).
5. The limit mechanism of the multi-circle stroke valve electric control device according to claim 1, characterized in that: the device is characterized by further comprising a stroke shaft (1), wherein a fixed sleeve (114) extends upwards from the middle of the driving wheel disc (11), and the stroke shaft (1) is sleeved with the fixed sleeve (114).
6. The limit mechanism of the multi-circle stroke valve electric control device according to claim 5, characterized in that: the side wall of the fixed sleeve (114) is provided with a second screw hole (115), a second jackscrew (116) is in threaded connection with the second screw hole (115), and the second jackscrew (116) can abut against the stroke shaft (1).
7. The limit mechanism of the multi-turn travel valve electric control device according to claim 6, characterized in that: the driven gear (12) is rotatably sleeved on the stroke shaft (1), and the lower surface of the wheel sheet of the driven gear (12) is abutted against the upper end surface of the fixed sleeve (114).
8. The limit mechanism of the multi-circle stroke valve electric control device according to claim 1, characterized in that: the linkage device is characterized by further comprising a linkage shaft (2), wherein the linkage gear (21) is sleeved on the linkage shaft (2).
9. The limit mechanism of the multi-turn travel valve electric control device according to claim 8, characterized in that: the linkage shaft (2) and the stroke shaft (1) are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010492436.2A CN111486262A (en) | 2020-06-03 | 2020-06-03 | Limiting mechanism of multi-circle stroke valve electric control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010492436.2A CN111486262A (en) | 2020-06-03 | 2020-06-03 | Limiting mechanism of multi-circle stroke valve electric control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111486262A true CN111486262A (en) | 2020-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010492436.2A Pending CN111486262A (en) | 2020-06-03 | 2020-06-03 | Limiting mechanism of multi-circle stroke valve electric control device |
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| Country | Link |
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| CN (1) | CN111486262A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879521A (en) * | 2021-03-18 | 2021-06-01 | 扬州电力设备修造厂有限公司 | Stroke control mechanism for partial-rotation electric actuating mechanism |
-
2020
- 2020-06-03 CN CN202010492436.2A patent/CN111486262A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879521A (en) * | 2021-03-18 | 2021-06-01 | 扬州电力设备修造厂有限公司 | Stroke control mechanism for partial-rotation electric actuating mechanism |
| CN112879521B (en) * | 2021-03-18 | 2024-05-07 | 扬州电力设备修造厂有限公司 | Stroke control mechanism for partial rotation electric actuating mechanism |
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