Dynamic feedback device based on pneumatic ball valve

Abstract

The utility model relates to the technical field of ball valves, in particular to a feedback device based on the dynamic state of a pneumatic ball valve, which comprises a pneumatic actuator, an output shaft of the pneumatic actuator is connected with the pneumatic ball valve; the positioner is connected with the pneumatic actuator through a pipeline and used for conveying an air source to the pneumatic actuator; the transmission assembly is connected with an output shaft of the pneumatic actuator; the limit switch is rotatably connected with the transmission assembly and is used for monitoring and feeding back the dynamic state of the pneumatic ball valve in real time; according to the utility model, the rotating shaft is arranged on the output shaft of the shifting fork type actuator, then the transmission assembly is arranged on the rotating shaft, the transmission assembly is connected with the display panel, and the synchronous rotation of the pneumatic ball valve and the display panel is realized through the transmission assembly and the rotating shaft, so that the pneumatic ball valve can be accurately displayed by observing the rotating track of the display panel. And the dynamic state of the pneumatic ball valve can be monitored and fed back in real time, so that the dynamic state of the pneumatic ball valve can be accurately mastered.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a dynamic feedback device based on a pneumatic ball valve. Background Art

[0002] A pneumatic ball valve is an automated valve that combines a ball valve with a pneumatic actuator. It mainly controls the air source in the pneumatic actuator to achieve flow regulation or full open / close control of the pneumatic ball valve. In other words, the output end of the pneumatic actuator is fixedly connected to the valve stem of the pneumatic ball valve, and the valve stem is fixedly connected to the ball. When the air source is filled into the pneumatic actuator, the output end of the pneumatic actuator rotates under the action of air pressure, and the output end drives the valve stem to rotate. During the rotation of the valve stem, the ball is driven by the ball to rotate, and the flow regulation function of the pneumatic ball valve or the rapid opening or closing function is achieved through the rotation of the ball.

[0003] However, in actual operation, since the dynamics of the pneumatic ball valve cannot be accurately grasped in real time, only a single adjustment function or switching function of the pneumatic ball valve can be realized. It is impossible to accurately judge whether the pneumatic ball valve is in the fully open or fully closed position while adjusting the pneumatic ball valve. This affects the process system's desire to achieve both the adjustment function for process control and the dynamic judgment of whether the pneumatic ball valve is in the fully open or fully closed position. Utility Model Content

[0004] The purpose of the present utility model is to provide a dynamic feedback device based on a pneumatic ball valve to solve the problems raised in the above background technology.

[0005] The technical solution adopted in this utility model is:

[0006] A dynamic feedback device based on a pneumatic ball valve, comprising:

[0007] A pneumatic actuator, the output shaft of which is connected to the pneumatic ball valve;

[0008] a positioner connected to the pneumatic actuator via a pipeline and used to deliver an air source to the pneumatic actuator;

[0009] a transmission assembly connected to the output shaft of the pneumatic actuator;

[0010] A limit switch is rotatably connected to the transmission assembly and is used for real-time monitoring and feedback of the dynamics of the pneumatic ball valve.

[0011] Optionally, the transmission assembly includes:

[0012] a first connecting member, fixedly arranged on the output shaft of the pneumatic actuator;

[0013] a second connecting member, one end of which is rotatably connected to the first connecting member;

[0014] The third connecting member has one end rotatably connected to one end of the second connecting member and the other end rotatably connected to the limit switch.

[0015] Optionally, the first connecting member is a plate-shaped structure.

[0016] Optionally, also include:

[0017] a rotation axis;

[0018] The rotating shaft is arranged on the output shaft of the pneumatic actuator, and the first connecting member is connected to the output shaft of the pneumatic actuator through the rotating shaft.

[0019] Optionally, the rotating shaft is detachably connected to the output shaft of the pneumatic actuator.

[0020] Optionally, a containing box is further included, in which the rotating shaft and the transmission assembly are located.

[0021] Optionally, the positioner and / or the limit switch are arranged on the containing box.

[0022] Optionally, a display disk is provided on the top of the limit switch, and the display disk is rotatably connected to the third connecting member.

[0023] Optionally, the display panel includes a dial with a pointer and different colors or a scale dial with a pointer.

[0024] Optionally, the pneumatic actuator is a scotch yoke actuator.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] In the utility model, a rotating shaft is provided on the output shaft of the scotch fork actuator, and then a transmission assembly is provided on the rotating shaft. The transmission assembly is connected to the display panel, and the synchronous rotation of the pneumatic ball valve and the display panel is realized through the transmission assembly and the rotating shaft. Therefore, by observing the rotation trajectory of the display panel, the dynamics of the pneumatic ball valve can be monitored and fed back in real time, and the dynamics of the pneumatic ball valve can be accurately grasped. This solves the problem in the prior art that the pneumatic ball valve can only realize a single adjustment function or switching function due to the inability to accurately grasp the dynamics of the pneumatic ball valve in real time, and cannot realize the accurate judgment of whether the pneumatic ball valve has reached the fully open or fully closed position while adjusting the pneumatic ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is a schematic diagram of the overall structure of this application;

[0029] Figure 2 This is a schematic diagram of the structure of an embodiment of the present application.

[0030] Reference numerals:

[0031] 1. Positioner; 2. Rotation axis;

[0032] 3. Transmission assembly; 31. First connecting member; 32. Second connecting member; 33. Third connecting member;

[0033] 4. Limit switch; 41. Display panel;

[0034] 5. Scotch-yoke actuator; 6. Housing; 7. Pneumatic ball valve. DETAILED DESCRIPTION

[0035] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.

[0037] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0038] Considering that the existing pneumatic ball valve cannot accurately grasp the dynamics of the pneumatic ball valve in real time, it can only realize a single adjustment function or switching function, and cannot accurately determine whether the pneumatic ball valve is in the fully open or fully closed position while adjusting the pneumatic ball valve.

[0039] like Figure 1-2 As shown, the present invention provides a dynamic feedback device for a pneumatic ball valve, comprising a positioner 1, a rotating shaft 2, a transmission assembly 3, a limit switch 4, and a pneumatic actuator. Pneumatic actuators are well known in the art and are not described in detail herein.

[0040] One end of the pneumatic actuator's output shaft is fixedly connected to the valve stem of the pneumatic ball valve 7, while the other end is detachably connected to a rotating shaft 2, located above the pneumatic actuator for transmitting torque. The pneumatic actuator primarily provides rotational kinetic energy for the valve stem of the pneumatic ball valve 7 and the rotating shaft 2. A positioner 1 is connected to the pneumatic actuator via a pipeline. Positioner 1 is configured to receive electrical signals from a controller (not shown) or a control system (not shown) and output a corresponding air source based on these signals. The air source is delivered to the pneumatic actuator through a pipeline, causing the pneumatic actuator to operate and act on the pneumatic ball valve 7 and the rotating shaft 2. A transmission assembly 3 is rotationally connected to the rotating shaft 2 at one end and to the limit switch 4 at the other end. Rotation of the rotating shaft 2 activates the transmission assembly 3, which in turn activates the limit switch 4. Since the rotating shaft 2 and the valve stem of the pneumatic ball valve 7 are indirectly connected through the output shaft of the pneumatic actuator, the rotation amplitude of the valve stem of the pneumatic ball valve 7 also represents the rotation amplitude of the rotating shaft 2, and further represents the rotation amplitude of the limit switch 4. Therefore, the dynamics of the pneumatic ball valve 7 can be indirectly monitored and fed back in real time through the limit switch 4.

[0041] Specifically, the transmission assembly 3 includes a first connecting member 31 , a second connecting member 32 and a third connecting member 33 .

[0042] The first connecting member 31 is fixedly mounted on the rotating shaft 2 and has a generally plate-like structure. The second connecting member 32 is rotatably connected to the first connecting member 31 and has a generally "[" shape. The third connecting member 33 is rotatably connected to one end of the second connecting member 32 and has a generally "L" or "T" shape. When the rotating shaft 2 rotates, the rotating shaft 2 drives the first connecting member 31 to rotate, which in turn drives the second connecting member 32 to reciprocate. The reciprocating movement of the second connecting member 32 drives the third connecting member 33 to rotate.

[0043] A display panel 41 is mounted on top of the limit switch 4 and is rotatably connected to one end of the third connector 33. Rotation of the third connector 33 drives the display panel 41 with it. By observing the rotation trajectory of the display panel 41, real-time monitoring and feedback of the dynamics of the pneumatic ball valve 7 can be achieved. Preferably, the display panel 41 in this embodiment can be a dial with a pointer and different colors, or a graduated dial with a pointer. The specific form is not limited, as long as it can display the rotation trajectory.

[0044] Preferably, the pneumatic actuator in this embodiment is a scotch yoke actuator 5 .

[0045] During operation, the controller outputs an electrical signal to the positioner 1. The positioner 1 then outputs a corresponding air source based on the electrical signal. The air source is then delivered to the scotch fork actuator 5 through a pipeline. The output shaft of the scotch fork actuator 5 rotates, driving the valve stem of the pneumatic ball valve 7 and the rotating shaft 2 to rotate synchronously. The valve stem drives the ball to rotate, and during this rotation, the ball opens and closes the pneumatic ball valve 7 and adjusts its opening. The rotating shaft 2 drives the first connecting member 31 to rotate synchronously, which in turn drives the second connecting member 32 to reciprocate. During this reciprocating motion, the second connecting member 32 drives the third connecting member 33 to rotate, and the third connecting member 33 drives the display panel 41 in the limit switch 4 to move synchronously. By observing the rotation trajectory of the display panel 41, real-time monitoring and feedback of the pneumatic ball valve 7's dynamics can be achieved. Therefore, by observing the display panel 41, it is possible to determine whether the pneumatic ball valve 7 is in a fully open / fully closed state or in an adjustable state.

[0046] Furthermore, in order to protect the rotating shaft 2 and the transmission assembly 3 from external force loss, a containing box 6 is also provided on the fork actuator 5. The rotating shaft 2 and the transmission assembly 3 are located in the containing box 6, and the positioner 1 and the limit switch 4 are provided on the containing box 6. Of course, the positioner 1 or the limit switch 4 can also be provided on the containing box 6.

[0047] In another embodiment, the valve stem of the pneumatic ball valve 7 and the transmission assembly 3 are arranged on the same end of the output shaft of the pneumatic actuator. The rotation of the output shaft drives the valve stem of the pneumatic ball valve 7 and the transmission assembly 3 to rotate synchronously, and the transmission assembly 3 then drives the display panel 41 in the limit switch 4 to move synchronously.

[0048] It should be noted that the pneumatic actuator described in the above embodiment includes, but is not limited to, a scotch yoke actuator 5. As long as the output shaft of the pneumatic actuator rotates, its specific structure is not further limited in this embodiment. The structures of the scotch yoke actuator 5 and the pneumatic ball valve 7 are prior art and are therefore not specifically described in this embodiment.

[0049] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A dynamic feedback device based on a pneumatic ball valve, characterized in that: include: A pneumatic actuator, whose output shaft is connected to the pneumatic ball valve; a positioner, connected to the pneumatic actuator through a pipeline, for supplying air to the pneumatic actuator; a transmission assembly, connected to the output shaft of the pneumatic actuator; a limit switch, rotatably connected to the transmission assembly, for real-time monitoring and feedback of the dynamics of the pneumatic ball valve.

2. The feedback device according to claim 1, characterized in that The transmission assembly includes: a first connecting member, fixedly arranged on the output shaft of the pneumatic actuator; a second connecting member, one end of which is rotatably connected to the first connecting member; a third connecting member, one end of which is rotatably connected to one end of the second connecting member, and the other end is rotatably connected to the limit switch.

3. The feedback device according to claim 2, wherein: The first connecting member is a plate-shaped structure.

4. The feedback device according to claim 2, characterized in that Also includes: a rotation axis; The rotating shaft is arranged on the output shaft of the pneumatic actuator, and the first connecting member is connected to the output shaft of the pneumatic actuator through the rotating shaft.

5. The feedback device according to claim 4, characterized in that: The rotating shaft is detachably connected to the output shaft of the pneumatic actuator.

6. The feedback device according to claim 4, characterized in that: It also includes a containing box, in which the rotating shaft and the transmission assembly are located.

7. The feedback device according to claim 6, characterized in that: The positioner and / or the limit switch are arranged on the containing box.

8. The feedback device according to claim 2, wherein: A display disk is provided on the top of the limit switch, and the display disk is rotatably connected to the third connecting member.

9. The feedback device according to claim 8, characterized in that: The display plate includes a dial with a pointer and different colors or a scale plate with a pointer.

10. The feedback device according to claim 1, characterized in that: The pneumatic actuator is a scotch yoke actuator.

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