CN217272200U - Feedback connecting device of self-control valve - Google Patents
Feedback connecting device of self-control valve Download PDFInfo
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- CN217272200U CN217272200U CN202220826782.4U CN202220826782U CN217272200U CN 217272200 U CN217272200 U CN 217272200U CN 202220826782 U CN202220826782 U CN 202220826782U CN 217272200 U CN217272200 U CN 217272200U
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Abstract
The utility model discloses a self-control valve feedback connecting device has solved the transverse stress that the pipeline produced among the prior art and has caused metal fatigue to the connecting rod, uses a period can cause the cracked problem of threaded connection pole, has the valve feedback mistake that reduces to cause the connecting rod fracture or a small amount of mechanical displacement to cause because of pipe vibration, has both reduced the maintenance volume, has the beneficial effect who has improved the operating efficiency of equipment, and the concrete scheme is as follows: the utility model provides a self-control valve feedback connecting device, includes coupling mechanism, and coupling mechanism includes the connecting rod, the lower part fixed connection piece of connecting rod bottom connector, and the recess butt joint on connection piece bottom and the valve cylinder top valve shaft is joined in marriage.
Description
Technical Field
The utility model belongs to the technical field of the automatic control valve feedback technique and specifically relates to an automatic control valve feedback connecting device.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The automatic control valve is controlled by means other than manpower such as electric, pneumatic, hydraulic or electromagnetic driving, and the like, and some industries need large-scale accurate flow control, so that the application of valve automation is increasingly wide; in the polymerization kettle interlocking control system, an automatic control valve performs switching according to the sequence set by a program, a valve feedback device is used for judging whether a valve is opened or closed or not, the valve feedback device is connected to a valve shaft by a threaded connecting rod and locked by a backup nut, the valve feedback device belongs to hard link, and the connecting rod rotates along with the 90-degree rotation of the valve shaft to drive a microswitch in the feedback device to be closed or opened, so that a signal is transmitted to the control system;
due to the vibration of the process pipeline, the transverse stress generated by the pipeline causes metal fatigue to the connecting rod, the threaded connecting rod can be broken after the threaded connecting rod is used for a period of time, the feedback device cannot rotate along with the rotation of the valve shaft, the opening and closing state of the valve cannot be transmitted to a control system, and further the subsequent actions of all automatic control valves are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a self-control valve feedback connecting device, simple structure reduces because of the valve feedback mistake that pipeline vibration or a small amount of mechanical displacement caused, has guaranteed the normal operating of equipment.
In order to achieve the above purpose, the present invention is realized by the following technical solution:
a feedback connecting device of a self-control valve comprises a connecting mechanism, wherein the connecting mechanism comprises a connecting rod, a connecting sheet is fixed on the lower portion of a connecting head at the bottom of the connecting rod, and the bottom of the connecting sheet is in butt joint fit with a groove on a valve shaft at the top of a valve cylinder.
The feedback connecting device effectively reduces valve feedback errors caused by pipeline vibration or a small amount of mechanical displacement, reduces maintenance amount, improves the operation efficiency of equipment, and cannot cause fracture of the connecting rod.
According to the self-control valve feedback connecting device, the feedback component is fixedly connected to the top of the connecting rod, and the connecting piece is provided with the bulge along the radial direction of the connecting rod.
In the above self-control valve feedback connecting device, the groove is arranged at the center of the valve shaft.
According to the feedback connection device of the automatic control valve, the center of the bottom of the groove is provided with the center hole of the valve shaft.
The feedback connection device of the self-control valve further comprises a connecting rod fixedly connected with the center of the bottom of the connecting sheet.
According to the self-control valve feedback connecting device, the connecting head is fixedly connected with the center of the top of the connecting sheet.
According to the feedback connection device of the automatic control valve, one end of the connecting rod, which is far away from the connecting piece, is inserted into the central hole of the valve shaft.
According to the feedback connection device of the self-control valve, the elastic washer is arranged on the periphery of the connecting sheet, and a certain movable gap is formed between the connecting sheet and the groove.
According to the feedback connection device of the automatic control valve, the diameter of the connection rod is larger than the width of the connection piece, and the connection rod and the connection piece are located on the same axis.
According to the self-control valve feedback connecting device, the connecting rod and the connecting rod are located on the same axis.
Above-mentioned the utility model has the advantages as follows:
the utility model discloses a change threaded connection pole into non-threaded connection by threaded connection, eliminate the drawback of hard connection, the connector lower part welded connection piece of connecting rod bottom, the recess butt joint of connection piece and valve shaft, connection piece below welded connection rod, insert in the valve shaft centre bore, just so make the connection piece can rotate along with the valve shaft, certain clearance in addition, the effectual valve feedback mistake that causes because of pipe vibration or a small amount of mechanical displacement that has reduced, the maintenance volume has both been reduced, the operating efficiency of equipment has been improved, can not cause the fracture of connecting rod.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic diagram of a prior art autonomous valve feedback system.
Fig. 2 is a schematic diagram of an overall structure of a feedback connection device of a self-control valve according to one or more embodiments of the present invention.
Fig. 3 is a partial schematic view of a feedback connection of a self-regulating valve according to one or more embodiments of the present invention.
In the figure: the spacing or size between each other is exaggerated to show the location of the portions, and the illustration is merely for illustrative purposes.
Wherein: 1. the valve comprises a feedback assembly, a valve cylinder, a threaded connection mechanism, a connector, a connecting piece and a connecting rod, wherein the feedback assembly comprises 2 parts of a valve cylinder, 3 parts of a threaded connection mechanism, 4 parts of a connection mechanism, 4-1 parts of a connector, 4-2 parts of a connecting piece and 4-3 parts of a connecting rod.
Detailed Description
Just as the background art introduces, the transverse stress that the pipeline produced among the prior art causes metal fatigue to the connecting rod, uses the cracked problem of threaded connection pole that can cause for a period of time, in order to solve above technical problem, the utility model provides a self-control valve feedback connecting device.
Example one
In a typical embodiment of the present invention, referring to fig. 2-3, a feedback connection device for a self-control valve comprises a connection mechanism, wherein the connection mechanism comprises a connection rod, a connection rod and a connection piece, the lower part of the connection head 4-1 at the bottom of the connection rod is fixed with the connection piece 4-2, the bottom of the connection piece 4-2 is connected with the connection rod 4-3, the connection rod is arranged at the central position of the connection piece 4-2, and the connection piece 4-2 is located between the connection rod 4-3 and the connection head 4-1.
The upper end of a connecting rod of the connecting mechanism is connected with the feedback assembly 1, a microswitch is arranged in the feedback assembly and connected with a control system, the feedback assembly is the prior art, the lower end of the connecting mechanism is connected with the valve cylinder 2, the top of the valve cylinder 2 is provided with a valve shaft, the center of the top of the valve shaft is provided with a groove, and the center of the groove is provided with a center hole of the valve shaft.
It will be appreciated that the valve shaft is located on the same axis as the valve shaft central bore; the connecting rod 4-3 and the connecting rod are positioned on the same axis;
one end of the connecting rod 4-3, which is far away from the connecting sheet 4-2, namely the lower end of the connecting rod 4-3, is inserted into a valve shaft central hole in a groove of the valve shaft, the connecting sheet is provided with a bulge extending along the radial direction of the left side and the right side of the connecting rod, the shape of the formed connecting sheet 4-2 is matched with that of the groove, the bottom of the connecting sheet 4-2 is in matched butt joint with the groove, a certain movable gap is arranged between the connecting sheet 4-2 and the groove, and an elastic washer is arranged on the peripheral side of the connecting sheet 4-2.
Specifically, the depth of the matching between the connecting sheet 4-2 and the groove is larger than the thickness of the connecting sheet 4-2, so that the better transmission effect of the connecting sheet 4-2 is ensured, two through holes are formed in the side face of the connecting sheet 4-2, elastic pieces can be arranged at the positions, close to the two ends of the side face of the connecting sheet 4-2, of the through holes, so that the connecting sheet 4-2 and the groove can be matched well, and the elastic pieces are made of rubber materials.
It can be understood that the centers of the connecting rod, the connecting rod and the connecting sheet and the center of the groove of the embodiment are all positioned on the same axis, so that the coaxial arrangement is realized, the connecting rod is prevented from being broken, and the working efficiency of the polymerization kettle is reduced.
The diameter of the connecting rod is larger than the width of the connecting sheet, so that the part of the connecting head at the bottom of the connecting rod, which protrudes out of the connecting sheet, abuts against the upper surface of the groove, and the stability of the connection of the connecting sheet and the groove in a matched manner is maintained.
As shown in fig. 1, the threaded connection mechanism is a prior art, adopts a threaded connection mode, belongs to hard connection, and when the transverse stress generated along with the vibration of the process pipeline causes metal fatigue to the connecting rod, the threaded connecting rod is disconnected after being used for a period of time, so that the feedback device cannot rotate along with the rotation of the valve shaft, and further the subsequent actions of all automatic control valves are influenced.
This embodiment changes threaded connecting rod into non-threaded connection by threaded connection, eliminate the drawback of hard joint, the connector lower part welding connection piece of connecting rod bottom, the recess butt joint of connection piece and valve shaft, connection piece below welding connection rod, insert in the valve shaft centre bore, just so make the connection piece can rotate along with the valve shaft, certain clearance in addition, the effectual valve feedback mistake that causes because of pipeline vibration or a small amount of mechanical displacement that has reduced, the maintenance load has both been reduced, the operating efficiency of equipment has been improved, can not cause the fracture of connecting rod.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The feedback connection device of the self-control valve is characterized by comprising a connection mechanism, wherein the connection mechanism comprises a connection rod, a lower part fixed connection sheet of a connector at the bottom of the connection rod is in butt joint fit with a groove on a valve shaft at the top of a valve cylinder, and the bottom of the connection sheet is in butt joint fit with the groove on the valve shaft at the top of the valve cylinder.
2. The self-controlling valve feedback connection device of claim 1, wherein the top of the connecting rod is fixedly connected with the feedback assembly, and the connecting piece has a protrusion along the radial direction of the connecting rod.
3. An automatic control valve feedback connection according to claim 1 wherein said recess is provided in the centre of the valve shaft.
4. A self-controlling valve feedback connection according to claim 3, wherein said recess is centrally provided with a central bore of said valve shaft.
5. The feedback connection device of claim 4, wherein the connection mechanism further comprises a connecting rod fixedly connected to the bottom center of the connecting plate.
6. The feedback connection device of a self-controlling valve as claimed in claim 1, wherein the connecting head is fixedly connected to the top of the connecting piece at a central position.
7. An automatic valve feedback connection according to claim 5 wherein an end of said connecting rod remote from said connecting tab is inserted into said central bore of said valve shaft.
8. The feedback connection device of an automatic control valve as claimed in claim 6, wherein the connecting piece is provided with an elastic washer around the connecting piece, and a certain clearance is provided between the connecting piece and the groove.
9. A self-controlling valve feedback linkage according to claim 1, wherein the diameter of the connecting rod is greater than the width of the connecting tab, the connecting rod and the connecting tab being co-axial.
10. An automatic control valve feedback connection according to claim 5 wherein said connecting rod is co-axial with said connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220826782.4U CN217272200U (en) | 2022-04-08 | 2022-04-08 | Feedback connecting device of self-control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220826782.4U CN217272200U (en) | 2022-04-08 | 2022-04-08 | Feedback connecting device of self-control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217272200U true CN217272200U (en) | 2022-08-23 |
Family
ID=82874772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220826782.4U Active CN217272200U (en) | 2022-04-08 | 2022-04-08 | Feedback connecting device of self-control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217272200U (en) |
-
2022
- 2022-04-08 CN CN202220826782.4U patent/CN217272200U/en active Active
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