CN214946719U - Multi-rotary valve electric device without thrust disc - Google Patents
Multi-rotary valve electric device without thrust disc Download PDFInfo
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- CN214946719U CN214946719U CN202121085319.0U CN202121085319U CN214946719U CN 214946719 U CN214946719 U CN 214946719U CN 202121085319 U CN202121085319 U CN 202121085319U CN 214946719 U CN214946719 U CN 214946719U
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- output shaft
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- nut
- ball bearing
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Abstract
The utility model discloses a many gyration valve electric actuator of no thrust dish has: the center of the output shaft is provided with a through hole; the nut is fixedly arranged in the through hole of the output shaft; the valve rod is slidably arranged in the through hole of the output shaft and is in threaded fit with the nut; the electric device connecting disc is arranged on the output shaft through a thrust ball bearing; the worm wheel and the worm wheel of the electric device are fixedly connected with the output shaft, so that a traditional thrust disc is omitted, the electric device still has the function of bearing axial force of the original electric device, and is also suitable for multi-rotary valves with closure members such as gate valves, stop valves, diaphragm valves and the like which do linear motion. The volume is reduced, the production cost is reduced, and the installation and the use are convenient.
Description
Technical Field
The utility model belongs to the technical field of industrial automation control, especially, relate to a many gyration valve electric actuator of no thrust dish.
Background
The valve electric device is matched with the valve for use, controls and drives the valve to open and close, becomes an electric valve, and can be operated on site or remotely. The multi-rotary valve with the closing members of a gate valve, a stop valve, a diaphragm valve and the like doing linear motion can generate huge axial force due to the lifting of a valve rod in the opening and closing process, and the axial force is finally applied to a valve electric device, so that the electric device matched with the valve needs to be connected between the electric device and the valve, namely, a thrust disc is connected to an electric device connecting disc, and a valve rod nut and a thrust ball bearing are arranged in the thrust disc in order to avoid the axial force from damaging the electric device. When the electric device operates, the three-jaw driving valve rod nut of the output shaft rotates to drive the valve rod to lift, the axial force generated at two ends of the valve rod nut acts on the thrust ball bearing and is transmitted to the thrust disc, and a transmission part in the electric device cannot bear the axial force. So that no damage is caused by axial forces. The magnitude of the axial force depends on factors such as the output torque of the electric device, the size of the valve stem and the nut, the thread pitch and the equivalent friction angle.
In the process of implementing the present invention, the inventor finds that the prior art has at least the following problems: the thrust disc is arranged, so that the size of the product is increased, the cost is increased, and the installation is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a many gyration valve electric actuator of thrust disc that has reduced the volume, has reduced manufacturing cost, installation and convenient to use is provided.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a multi-rotary valve electric actuator without a thrust plate, comprising:
the center of the output shaft is provided with a through hole;
the nut is fixedly arranged in the through hole of the output shaft;
the valve rod is slidably arranged in the through hole of the output shaft, and the valve rod is in threaded fit with the nut;
the electric device connecting disc is arranged on the output shaft through a thrust ball bearing;
and the worm wheel of the electric device is fixedly connected with the output shaft.
The electric device flange is provided with steps, and two sides of each step are respectively provided with a thrust ball bearing.
One side of the first thrust ball bearing is matched with a step on the output shaft; and a locking nut is arranged on the outer side of the second thrust ball bearing.
The nut is connected with the output shaft through a spline.
Still be equipped with and adjust the lock mother, it installs to adjust the lock mother on the electric actuator flange, the tip and the nut contact of adjusting the lock mother.
And an oil seal for sealing the thrust ball bearing is also arranged on the electric device flange.
One of the technical schemes has the following advantages or beneficial effects that the traditional thrust disc is omitted, the electric device still has the function of bearing axial force of the original electric device, and the electric device is also suitable for multi-rotary valves with closure members such as gate valves, stop valves, diaphragm valves and the like which do linear motion. The volume is reduced, the production cost is reduced, and the installation and the use are convenient.
Drawings
Fig. 1 is a schematic structural view of a multi-rotary valve electric device without a thrust disc provided in an embodiment of the present invention;
the labels in the above figures are: 1. the device comprises a worm wheel, 2, a valve rod, 3, an output shaft, 4, a nut, 5, a thrust ball bearing, 6, an electric device flange, 7, an adjusting lock nut, 8, a lock nut, 9 and an oil seal.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, a thrust-disc-less multi-rotary valve electric device has:
the center of the output shaft is provided with a through hole;
the nut is fixedly arranged in the through hole of the output shaft;
the valve rod is slidably arranged in the through hole of the output shaft and is in threaded fit with the nut;
the electric device connecting disc is arranged on the output shaft through a thrust ball bearing;
and the worm wheel of the electric device is fixedly connected with the output shaft.
The electric device flange is provided with a step, and two sides of the step are respectively provided with a thrust ball bearing.
One side of the first thrust ball bearing is matched with a step on the output shaft; and a locking nut is arranged on the outer side of the second thrust ball bearing.
The nut is connected with the output shaft through a spline. Still be equipped with the regulation lock mother, adjust the lock mother and install on electric actuator flange, adjust the end and the nut contact of the lock mother. And an oil seal for sealing the thrust ball bearing is also arranged on the electric device flange.
The inner hole of the output shaft is broached to form four inner key grooves (six or eight can be used), the excircle of the valve rod nut is provided with four outer keys, the two parts are combined and fixed by using an adjustable nut, the thrust ball bearing is installed in a flange of an electric device and fixed by using a lock nut, but a proper axial clearance exists, when the electric device operates, the output shaft and the valve rod nut rotate together to drive the valve rod to lift and operate, the axial force generated by the valve rod nut and the output shaft respectively acts on the upper thrust ball bearing and the lower thrust ball bearing and is transmitted to the flange of the electric device, and a transmission part in the electric device is not influenced.
After the structure is adopted, the traditional thrust disc is omitted, the function that the original electric device can bear axial force is still provided, and the multi-rotary valve is also suitable for the multi-rotary valve with the closure members such as a gate valve, a stop valve, a diaphragm valve and the like which do linear motion. The volume is reduced, the production cost is reduced, and the installation and the use are convenient.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (6)
1. A multi-rotary valve electric actuator without a thrust plate, comprising:
the center of the output shaft is provided with a through hole;
the nut is fixedly arranged in the through hole of the output shaft;
the valve rod is slidably arranged in the through hole of the output shaft, and the valve rod is in threaded fit with the nut;
the electric device connecting disc is arranged on the output shaft through a thrust ball bearing;
and the worm wheel of the electric device is fixedly connected with the output shaft.
2. The thrust-free multi-turn valve electric actuator of claim 1, wherein the electric actuator flange is provided with a step, and one thrust ball bearing is provided on each side of the step.
3. The multi-rotary valve actuator without a thrust plate as set forth in claim 2, wherein the first thrust ball bearing is fitted at one side with a step on the output shaft; and a locking nut is arranged on the outer side of the second thrust ball bearing.
4. The thrust disc-less multiple rotary valve actuator of claim 3 in which said nut is connected to the output shaft by splines.
5. The thrust-disc-free multi-turn valve electric actuator of claim 4, further comprising an adjusting locking nut mounted on the electric actuator flange, an end of the adjusting locking nut being in contact with the nut.
6. The multi-rotary valve actuator without a thrust plate of claim 5, wherein an oil seal for sealing the thrust ball bearing is further provided on the actuator flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121085319.0U CN214946719U (en) | 2021-05-17 | 2021-05-17 | Multi-rotary valve electric device without thrust disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121085319.0U CN214946719U (en) | 2021-05-17 | 2021-05-17 | Multi-rotary valve electric device without thrust disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214946719U true CN214946719U (en) | 2021-11-30 |
Family
ID=79061745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121085319.0U Active CN214946719U (en) | 2021-05-17 | 2021-05-17 | Multi-rotary valve electric device without thrust disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214946719U (en) |
-
2021
- 2021-05-17 CN CN202121085319.0U patent/CN214946719U/en active Active
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