Stop mechanism for ceramic ball valve and method

Abstract

A stop mechanism for a ceramic ball valve, comprising a ball valve (1) and an actuation structure (2), wherein the actuation structure drives the ball valve to rotate. The stop mechanism further comprises a control module, a spring (3) and a tension sensor (4), wherein the control module is connected to the actuation structure. The ball valve is provided with an integrated ball valve connecting rod (11), and the actuation structure comprises a sleeve (21); the spring is sleeved on the ball valve connecting rod, and has one end connected to the ball valve connecting rod, and the other end connected to the sleeve. The sleeve is sleeved on the outer side of the spring, and the tension sensor is fixed in the sleeve and connected to the spring to monitor the tension of the spring. The stop mechanism has advantages such as high applicability and high safety. Further disclosed is a method for using the stop mechanism.

Description

Stop mechanism and method for ceramic ball valve TECHNICAL FIELD

[0001] The present application relates to the technical field of limestone gypsum slurry conveying equipment, in particular to a stop mechanism and method for ceramic ball valve. BACKGROUND

[0002] Ball valve refers to a valve in which a ball body is driven by a valve stem and rotates around the axis of the ball valve. Ball valves are mainly used to shut off, distribute and change the flow direction of medium in pipelines. They can be tightly closed by rotating 90 degrees and using a small torque. Ball valves are most suitable for use as on-off valves and shut-off valves.

[0003] Currently, the ceramic ball valve body is directly connected with the actuator. When the operator remotely operates, the actual situation of the ball valve cannot be known, and the ball valve is often hard to open and close. However, when the ball valve is used in the pipeline of limestone slurry or gypsum slurry, the valve body and the valve seat will be stuck by the solidified slurry. At this time, the operator cannot know the situation of the ball valve, and forced closing will cause the valve body to break and damage the ball valve. The ceramic fragments falling down will also pose a hidden danger to the operation of downstream equipment. SUMMARY

[0004] The purpose of the present application is to overcome the defects of the prior art that the valve body and the valve seat are stuck by the solidified slurry, and forced closing will cause the valve body to break and damage the ball valve, and to provide a stop mechanism and method for ceramic ball valve.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] The present application provides a stop mechanism for ceramic ball valve, which comprises a ball valve and an actuator. The actuator drives the ball valve to rotate. The stop mechanism further comprises a control module, a spring and a tension sensor. The control module is connected with the actuator.

[0007] An integrated ball valve connecting rod is arranged on the ball valve. The actuator comprises a sleeve. The spring is sleeved on the ball valve connecting rod, with one end connected with the ball valve connecting rod and the other end connected with the sleeve. The sleeve is sleeved on the outside of the spring. The tension sensor is fixed in the sleeve and connected with the spring for monitoring the tension of the spring.

[0008] Preferably, the spring is a torsion spring. The spring is fixed on the ball valve connecting rod. The fulcrum of the torsion spring is fixed on the inner wall of the sleeve.

[0009] Preferably, a hook is arranged on the inner wall of the sleeve. The spring is connected with the hook.

[0010] Preferably, the number of springs is multiple. Each spring is arranged at equal intervals on the ball valve connecting rod.

[0011] Preferably, the control module is further connected with a cleaning structure for flushing the valve body.

[0012] Preferably, the control module is further connected with a camera for acquiring real-time state pictures of the valve body and transmitting to a remote control center.

[0013] The application provides a method for a stop mechanism of a ceramic ball valve, comprising the following steps:

[0014] S1: the tension sensor acquires the tension of the spring and transmits the detection result to the control module in real time, and the control module compares the detection result with a threshold value;

[0015] S2: if the detection result is less than the threshold value, the execution structure continues to drive the valve body to rotate until the valve body rotates to a preset position;

[0016] S3: if the detection result is greater than the threshold value, the control module controls the execution mechanism to stop action.

[0017] Preferably, the control module is further connected with a cleaning structure for flushing the valve body.

[0018] Preferably, when the detection result is greater than the threshold value, after the control module controls the execution mechanism to stop action, the control module controls the cleaning structure to flush the valve body until the detection result of the tension sensor is less than the threshold value.

[0019] Preferably, after the execution mechanism stops action, the execution mechanism drives the sleeve to reset.

[0020] Compared with the prior art, the application has the following advantages:

[0021] (1) In the application, when the brake structure acts, the sleeve and the spring drive the ball valve connecting rod to rotate, the opening and closing state of the ball valve is switched, and the tension sensor detects the tension of the spring; when the ball valve is stuck between the valve seat due to the solidification of lime slurry, since the ball valve needs to be rotated with greater force, the tension of the spring increases during the rotation of the sleeve, and the tension sensor transmits the real-time detection result to the control module; when the tension is too large, the control execution structure stops action.

[0022] By arranging the spring for force transmission transition between the execution structure and the ball valve connecting rod, when the valve body is stuck to the valve seat, the deformation tension of the spring increases, the real-time tension of the spring is fed back to the control module by the tension sensor, when the tension is too large, the control module controls the execution structure to stop action, thereby playing a role in protecting the valve body, avoiding the situation that the ball valve is damaged and ceramic fragments are mixed into the slurry, reducing the cost loss caused by damage, saving the maintenance cost, and improving the automation degree and safety of the device.

[0023] (2) In this scheme, the spring real-time tension detected by the tension sensor is transmitted to the control module, the control module compares the detection result with the preset threshold value, judges whether the valve body is stuck through the tension state of the spring, and controls the cleaning structure to flush the valve body through the control module, so as to eliminate the frozen slurry at the ball valve, prevent the ball valve from being damaged due to forced closing, solve the fault of the ball valve in time, and reduce the influence of the ball valve fault on the production rhythm. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 is a structural schematic view of the stop mechanism provided by the embodiment of the present application;

[0025] Fig. 2 is an A-A sectional view of Fig. 1;

[0026] In the figure: 1, ball valve, 2, execution structure, 3, spring, 4, tension sensor, 11, ball valve connecting rod, 21, sleeve. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0029] It should be noted that: similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] It should be noted that the terms "first", "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0032] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. As "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0033] Embodiment 1

[0034] As shown in FIG. 1 and FIG. 2, the present embodiment provides a stop mechanism of a ceramic ball valve, comprising a ball valve 1 and an execution structure 2 driving the ball valve 1 to rotate, characterized in that the stop mechanism further comprises a control module, a spring 3 and a tension sensor 4, the control module being connected to the execution structure 2.

[0035] The ball valve 1 is provided with an integrated ball valve connecting rod 11, the execution structure 2 comprises a sleeve 21, the spring 3 is sleeved on the ball valve connecting rod 11, one end of the spring 3 is connected to the ball valve connecting rod 11, and the other end is connected to the sleeve 21, the sleeve 21 is sleeved on the outside of the spring 3, and the tension sensor 4 is fixed in the sleeve 21 and connected to the spring 3 for monitoring the spring tension.

[0036] Working principle: when the stop structure 2 acts, the sleeve 21 and the spring 3 drive the ball valve connecting rod 11 to rotate, the switch state of the ball valve is switched, and the tension sensor 4 detects the tension of the spring; when the ball valve and the valve seat are stuck due to the solidification of lime slurry, since the ball valve is stuck and needs more force to rotate, the tension of the spring 3 increases during the rotation of the sleeve 21, the tension sensor 4 transmits the real-time detection result to the control module, and when the tension is too large, the execution structure 2 is controlled to stop acting.

[0037] In the present scheme, when the stop structure 2 acts, the sleeve 21 and the spring 3 drive the ball valve connecting rod 11 to rotate, the switch state of the ball valve is switched, and the tension sensor 4 detects the tension of the spring; when the ball valve and the valve seat are stuck due to the solidification of lime slurry, since the ball valve is stuck and needs more force to rotate, the tension of the spring 3 increases during the rotation of the sleeve 21, the tension sensor 4 transmits the real-time detection result to the control module, and when the tension is too large, the execution structure 2 is controlled to stop acting.

[0038] By setting the spring for force transmission transition between the execution structure 2 and the ball valve connecting rod 11, in the case of sticking of the valve body and the valve seat, the spring 3 is deformed and the tension increases, the tension sensor 4 feeds back the real-time tension of the spring 3 to the control module, when the tension is too large, the control module controls the execution structure to stop acting, which plays a role in protecting the valve body, avoids the situation that the ball valve is damaged and the ceramic fragments are mixed into the mud, reduces the cost loss caused by damage, saves the maintenance cost, and provides the automation degree and safety of the device.

[0039] Specifically, the spring 3 is a torsion spring, the spring 3 is fixed on the ball valve connecting rod 11, and the fulcrum of the torsion spring is fixed on the inner wall of the sleeve 21. The inner wall of the sleeve 21 is provided with a hook, and the spring 3 is connected to the hook. The number of springs 3 is multiple, and each spring is arranged at equal intervals on the ball valve connecting rod 11.

[0040] The control module is further connected with a cleaning structure, and the cleaning structure is used for flushing the valve body.

[0041] The spring drives the ball valve to rotate, and when the ball valve is stuck, the spring can be elongated, so that the valve body will not be directly stressed and broken, and when the spring tension reaches the material limit of the ball valve, the electric actuator is triggered to stop acting, until the ball valve is rotated to the right position by flushing the ball valve, and the electric actuator starts rotating again.

[0042] In a preferred embodiment, the control module is further connected with a camera, and the camera is used to acquire real-time state pictures of the valve body and transmit them to a remote control center. The operating personnel can assist in judging whether the ball valve is malfunctioning and whether the stop structure can be solved according to the photos taken by the camera, thereby improving the accuracy of dealing with ball valve failures and the efficiency of solving them.

[0043] Since the principle of the device is simple, its use is not limited to a certain fixed form, and it can be applied to ball valves of different types and sizes, and has a wider application range and stronger practicality.

[0044] The embodiment also provides a method for the stop structure of the ceramic ball valve, comprising the following steps:

[0045] S1: The tension sensor 4 acquires the tension of the spring 3 and transmits the detection result to the control module in real time, and the control module compares the detection result with a threshold value;

[0046] S2: If the detection result is less than the threshold value, the execution structure 2 continues to drive the valve body to rotate until it rotates to a preset position;

[0047] S3: If the detection result is greater than the threshold value, the control module controls the execution mechanism 2 to stop acting.

[0048] The remote operation lacks feedback of the ball valve jamming, and can only be hard opened and hard closed, and after the spring and the tension sensor are added, the ball valve stress has an upper limit protection, and the ball valve is prompted to be flushed, the frozen slurry at the ball valve is eliminated, and ball valve damage caused by forced closing can be prevented.

[0049] In the preferred embodiment, the control module is further connected with a cleaning structure for flushing the valve body.

[0050] The spring real-time tension detected by the tension sensor is transmitted to the control module, the control module compares the detection result with a preset threshold value, the valve body is judged to be stuck or not through the spring tension state, the valve body is flushed by the cleaning structure controlled by the control module, the frozen slurry at the ball valve is eliminated, ball valve damage caused by forced closing can be prevented, ball valve failure can be solved in time, and the influence of the ball valve failure on the production rhythm is reduced.

[0051] Optionally, after the actuator 2 stops acting, the sleeve is reset by the actuator 2.

[0052] The preferred embodiments of the application are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative labor based on the concept of the application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment based on the existing technology according to the concept of the application shall be within the protection scope defined by the claims.

Claims

1. A stop mechanism for a ceramic ball valve, comprising a ball valve (1) and an actuating structure (2), wherein the actuating structure (2) drives the ball valve (1) to rotate, characterized in that, The braking mechanism also includes a control module, a spring (3) and a tension sensor (4), and the control module is connected to the execution structure (2); The ball valve (1) is provided with an integral ball valve connecting rod (11). The actuating structure (2) includes a sleeve (21). The spring (3) is sleeved on the ball valve connecting rod (11), with one end connected to the ball valve connecting rod (11) and the other end connected to the sleeve (21). The sleeve (21) is sleeved on the outside of the spring (3). The tension sensor (4) is fixed inside the sleeve (21) and connected to the spring (3) for monitoring the spring tension.

2. The stopping mechanism of a ceramic ball valve according to claim 1, characterized in that, The spring (3) is a torsion spring, which is fixed on the ball valve connecting rod (11). The fulcrum of the torsion spring is fixed on the inner wall of the sleeve (21).

3. The stop mechanism of a ceramic ball valve according to claim 2, characterized in that, The sleeve (21) has a hook on its inner wall, and the spring (3) is connected to the hook.

4. The stop mechanism of a ceramic ball valve according to claim 2, characterized in that, The number of springs (3) is multiple, and each spring is equally spaced on the ball valve connecting rod (11).

5. The stopping mechanism of a ceramic ball valve according to claim 1, characterized in that, The control module is also connected to a cleaning structure, which is used to flush the valve body.

6. The stopping mechanism of a ceramic ball valve according to claim 1, characterized in that, The control module is also connected to a camera, which is used to acquire real-time images of the valve body and transmit them to a remote control center.

7. A method for a stop mechanism based on a ceramic ball valve according to any one of claims 1-6, characterized in that, Includes the following steps: S1: The tension sensor (4) acquires the tension of the spring (3) and transmits the detection result to the control module in real time. The control module compares the detection result with the threshold. S2: If the detection result is less than the threshold, the execution structure (2) continues to drive the valve body to rotate until it reaches the preset position; S3: If the detection result is greater than the threshold, the control module controls the actuator (2) to stop its operation.

8. The method according to claim 7, characterized in that, The control module is also connected to a cleaning structure, which is used to flush the valve body.

9. The method according to claim 8, characterized in that, When the detection result is greater than the threshold, the control module controls the actuator (2) to stop operating, and then the control module controls the cleaning structure to flush the valve body until the detection result of the tension sensor (4) is less than the threshold.

10. The method according to claim 7, characterized in that, After the actuator (2) stops operating, the actuator (2) drives the sleeve to reset.

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