Valve opening and closing controller

Abstract

The utility model relates to the technical field of valve opening and closing, and discloses a valve opening and closing controller which comprises a motor for controlling a valve element to rotate, and a limiting structure for limiting the valve element to continuously rotate when the valve element rotates until the valve is completely opened or completely closed is arranged between the motor and the valve element. The limiting structure comprises a mounting block arranged on the motor, a rotating rod rotationally arranged on the mounting block and capable of being connected with the valve element, and a contact block arranged on the outer ring wall of the rotating rod. The signal sensing control part is arranged between the mounting block and the contact block and is in contact with the contact block to control the motor to stop rotating when the valve is completely opened or completely closed in the rotating process of the contact block, and the protection structure is used for limiting the valve element to continuously rotate when the signal sensing control part fails. The valve opening and closing controller feeds back the actual rotating angle of the valve element in real time through the signal sensing control part, meanwhile, a protection structure is additionally arranged to form secondary protection, and it is guaranteed that the valve is opened and closed tightly.

Description

Technical Field

[0001] The utility model relates to the technical field of valve opening and closing, and in particular to a valve opening and closing controller. Background Art

[0002] Mechanical valves are mainly used to control the flow or shutoff of flow in pipelines. Usually, you only need to rotate the valve core 90° to open the mechanical valve, or rotate the valve core 90° in the opposite direction to close the mechanical valve. However, existing mechanical valves require manual operation, which is labor-intensive to open and close and cannot be automated, so electronic valves have emerged.

[0003] A Chinese patent application with application number 201820465060.4 discloses an electronic valve, including a motor, a driving tooth and a driven gear for connecting a valve core, wherein the driving tooth is a worm and is connected to the rotating shaft of the motor, and a reduction gear set is provided between the worm and the driven gear, wherein the reduction gear set includes a worm wheel meshing with the worm and an output gear meshing with the driven gear, and further includes a housing and a control circuit board disposed in the housing and electrically connected to the motor.

[0004] The electronic valve controls the opening and closing of the motor and the reduction gear set through the control circuit board, drives the valve core to rotate or stop, and then adjusts the opening of the electronic valve. However, during long-term use, due to the wear of mechanical transmission parts and the aging of the control circuit board, the signal is unstable, and the actual rotation angle of the valve core cannot be fed back, which will cause errors in the rotation angle of the valve core, resulting in loose opening and closing of the valve. Utility Model Content

[0005] The utility model provides a valve opening and closing controller to solve the problem that the actual rotation angle of the valve core cannot be fed back in the prior art, resulting in the valve not being able to open and close tightly after long-term use.

[0006] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0007] A valve opening and closing controller includes a motor for controlling the rotation of a valve core, a limit structure for limiting the valve core from continuing to rotate when the valve core rotates to fully open or fully close the valve, the limit structure includes a mounting block arranged on the motor, a rotating rod rotatably arranged on the mounting block and connectable to the valve core, a contact block arranged on the outer ring wall of the rotating rod, a signal sensing control unit arranged between the mounting block and the contact block and contacting the contact block when the valve is fully opened or fully closed during the rotation of the contact block to control the motor to stop rotating, and a protective structure for limiting the valve core from continuing to rotate when the signal sensing control unit fails, and the rotation of the rotating rod is controlled by the motor.

[0008] With the above scheme, the prior art drives the valve core to rotate to the corresponding angle by sending a quantitative pulse. However, due to the existence of problems such as signal loss, in order to ensure that the valve core can rotate to the target position, the pulse value needs to be increased. At the same time, in order to avoid excessive pulse value driving the valve core to rotate excessively, a limit structure is added. When the valve core rotates to the target position, the limit structure limits the valve core to continue to rotate. After the pulse value is sent, the motor will stop rotating. The motor drives the rotating rod to rotate, driving the contact block and the valve core to rotate synchronously. When the valve core rotates to the valve is fully closed, the contact block touches the signal sensing control unit, and the signal sensing control unit controls the motor to close, and the valve remains in a fully closed state; conversely, the motor rotates in the opposite direction, and the rotating rod drives the contact block and the valve core to rotate in the opposite direction. When the valve core rotates to the valve is fully opened, the contact block touches the signal sensing control unit, and the signal sensing control unit controls the motor to close, and the valve remains in a fully open state. The actual rotation angle of the valve core is fed back in real time by the signal sensing control unit to reduce or avoid valve opening and closing errors. When the signal sensing control unit fails, the protection structure restricts the valve core from continuing to rotate, forming a secondary protection to ensure that the valve opens and closes tightly.

[0009] Preferably, the contact block rotates within a range of 0° to 90° under the control of the signal sensing control unit. When the valve is fully closed, the contact block rotates to 0°; when the valve is fully opened, the contact block rotates to 90°.

[0010] With the above solution, when the valve is fully closed, the corresponding contact block rotates to 0°; when the valve is fully opened, the corresponding contact block rotates to 90°.

[0011] Preferably, the signal sensing control unit includes two micro switches fixed on the mounting block and a control module electrically connected to the two micro switches. When the contact block rotates to touch the micro switch, the control module controls the motor to stop rotating, and the two micro switches limit the rotation angle of the contact block to 0° to 90°.

[0012] By adopting the above scheme, the two micro switches limit the rotation angle of the contact block to 0°~90°, that is, when the contact block rotates to 0°, the contact block and a micro switch touch to drive the motor to turn off; conversely, when the contact block rotates to 90°, the contact block and another micro switch touch to drive the motor to turn off.

[0013] Preferably, the protection structure includes a limit block fixedly arranged on the mounting block, which limits the valve core from further rotation when the contact block rotates to abut against the limit block, and the limit block limits the contact block from rotating at an angle of -1° to 91°.

[0014] With the above solution, after the micro switch fails, the motor will drive the valve core to continue to rotate. At this time, the contact block abuts against the side wall of the limit block, limiting the continued rotation of the contact block, that is, limiting the continued rotation of the valve core, ensuring that the valve is basically in a fully open or closed state. The angle at which the limit block limits the rotation of the contact block is -1° to 91°, which is slightly larger than the range of the micro switch, and the difference can be basically ignored, thereby forming secondary protection.

[0015] Preferably, transmission is achieved between the motor and the rotating rod through a transmission structure, which includes a first gear rotatably arranged on the mounting block, an arc-shaped rack arranged on the contact block and meshing with the first gear and concentric with the rotating rod, and a gear box arranged between the motor and the mounting block and respectively connected to the motor and the first gear.

[0016] With the above solution, the motor drives the first gear to rotate through the gear box. Since the arc-shaped rack is arranged on the contact block and is concentric with the rotating rod, the first gear rotates, and the rotating rod is driven to rotate through the meshing arc-shaped rack.

[0017] Preferably, the motor, the gear box and the mounting block are detachably connected, and a signal connection structure is provided between the motor and the mounting block. The signal connection structure includes a connector provided on the mounting block and connected to the micro switch signal, and a plug provided on the motor and passing through the gear box and plugged into the connector for signal connection.

[0018] By adopting the above scheme, the motor, gear box and mounting block are produced separately and finally assembled, which is convenient for the replacement of parts. In order to facilitate the rapid assembly of the motor, gear box and mounting block, a connector connected to the micro switch signal is integrated on the mounting block, and a plug is provided on the motor. The signal electrical connection can be realized by simply plugging the plug and the connector.

[0019] Preferably, a cover shell is provided on the mounting block, and an avoidance slot is provided on the cover shell for the rotating rod to pass through.

[0020] By adopting the above solution, the cover shell is provided to make the whole more beautiful and can also protect various structures provided on the mounting block.

[0021] The utility model has significant technical effects due to the adoption of the above technical scheme: through the cooperation of the contact block and the two micro switches, the actual rotation angle of the valve core is fed back in real time, thereby reducing or avoiding the opening and closing errors of the valve; at the same time, a limit block is provided, and the angle at which the limit block limits the rotation of the contact block is slightly larger than the angle at which the micro switch limits the rotation of the contact block. When the micro switch fails, the valve core continues to rotate at a very small angle to cause the contact block and the limit block to abut against each other, thereby limiting the continued rotation of the valve core, thereby forming secondary protection and ensuring that the valve is opened and closed tightly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1is an axonometric diagram of a valve opening and closing controller in an embodiment;

[0023] Figure 2 This is a disassembled diagram of a valve opening and closing controller in an embodiment when a contact block rotates to 0°;

[0024] Figure 3 yes Figure 2 A in the enlarged view;

[0025] Figure 4 This is a partial enlarged view of a valve opening and closing controller in an embodiment when a contact block rotates to 90°;

[0026] Figure 5 This is a partial enlarged view of a valve opening and closing controller in an embodiment when the contact block rotates to -1°;

[0027] Figure 6 It is a partial enlarged view of a valve opening and closing controller in an embodiment when the contact block rotates to 91°;

[0028] Figure 7 This is a disassembled diagram of a valve opening and closing controller in an embodiment;

[0029] Figure 8 yes Figure 7 The enlarged view of point B in the figure;

[0030] Fig. 9 This is a disassembled diagram of a valve opening and closing controller in an embodiment;

[0031] Fig.10 yes Fig. 9 The enlarged view of point C in the figure;

[0032] Fig.11 This is a disassembled diagram of a valve opening and closing controller in an embodiment;

[0033] Fig.12 yes Fig.11 Enlarged view of point D in .

[0034] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Motor; 2. Mounting block; 4. Rotating rod; 5. Contact block; 6. Micro switch; 7. Limit block; 8. First gear; 9. Arc rack; 10. Gear box; 11. Connector; 12. Plug; 13. Cover; 14. Avoidance slot. DETAILED DESCRIPTION

[0035] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] Example

[0037] A valve opening and closing controller, referring to Figures 1 to 12, including a mounting block 2, on which a rotating rod 4 is rotatably arranged, one end of the rotating rod 4 is rotatably connected to the mounting block 2, and the other end is used to be connected to the valve core of the valve, and the rotation of the rotating rod 4 is controlled by a motor 1.

[0038] A contact block 5 is arranged on the outer ring wall of the rotating rod 4, and a signal sensing control unit is arranged between the mounting block 2 and the contact block 5. The rotating rod 4 rotates, driving the contact block 5 and the valve core to rotate synchronously. When the valve core rotates to the point where the valve is fully closed, the contact block 5 touches the signal sensing control unit, and the signal sensing control unit controls the motor 1 to close, and the valve remains in a fully closed state; conversely, the motor 1 rotates in the opposite direction, and the rotating rod 4 drives the contact block 5 and the valve core to rotate in the opposite direction synchronously. When the valve core rotates to the point where the valve is fully opened, the contact block 5 touches the signal sensing control unit, and the signal sensing control unit controls the motor 1 to close, and the valve remains in a fully open state. The actual rotation angle of the valve core is fed back in real time by the signal sensing control unit, so as to reduce or avoid the valve opening and closing error. When the valve is fully closed, the contact block 5 rotates to 0°; when the valve is fully opened, the contact block 5 rotates to 90°, that is, the rotation angle of the valve core and the contact block 5 needs to be limited to 0° to 90° to ensure the tight opening and closing of the valve.

[0039] The signal sensing control unit includes two micro switches 6 fixedly mounted on the mounting block 2, and also includes a control module electrically connected to the two micro switches 6, and the control module is also electrically connected to the motor 1. When the contact 5 rotates to touch the micro switch 6, the control module controls the motor 1 to stop rotating, and the two micro switches 6 limit the rotation angle of the contact 5 to 0° to 90°. That is, when the contact 5 rotates to 0°, the contact 5 and one micro switch 6 touch to drive the motor 1 to turn off; conversely, when the contact 5 rotates to 90°, the contact 5 and another micro switch 6 touch to drive the motor 1 to turn off. The setting of the control module, the signal electrical connection method and the control method between the control module and the micro switch 6 and the motor 1 are prior arts and will not be elaborated here.

[0040] In addition, a protective structure is provided between the mounting block 2 and the rotating rod 4. When the signal sensing control unit fails, the protective structure restricts the valve core from continuing to rotate, thereby forming a secondary protection to ensure that the valve is opened and closed tightly.

[0041] The protection structure includes a limit block 7 fixedly arranged on the mounting block 2. When the contact block 5 rotates to abut against the limit block 7, the valve core is restricted from further rotating. The limit block 7 restricts the rotation angle of the contact block 5 to -1° to 91°. In this embodiment, two micro switches 6 are respectively arranged on the side walls of the limit block 7.

[0042] After the micro switch 6 fails, the motor 1 will drive the valve core to continue to rotate. At this time, the contact block 5 abuts against the side wall of the limit block 7, limiting the continued rotation of the contact block 5, that is, limiting the continued rotation of the valve core. When the excessive pulse value is sent, the motor 1 stops rotating to ensure that the valve is in a fully open or closed state. The limit block 7 limits the rotation angle of the contact block 5 to -1° to 91°, which is slightly larger than the control range of the micro switch 6, thereby forming a secondary protection.

[0043] The transmission structure realizes transmission between the motor 1 and the rotating rod 4. The transmission structure includes a first gear 8 rotating on the mounting block 2. The contact block 5 is provided with an arc-shaped rack 9 concentric with the rotating rod 4, and the arc-shaped rack 9 is meshed with the first gear 8. The motor 1 is detachably provided with a gear box 10, and the gear box 10 is detachably connected to the mounting block 2. The motor 1 drives the first gear 8 to rotate through the gear box 10, and drives the rotating rod 4 to rotate through the arc-shaped rack 9 meshed with the first gear 8. The motor 1, the gear box 10 and the mounting block 2 are produced separately and finally assembled to facilitate the replacement of parts. The detachable connection method is a bolt threaded connection, which is a prior art and will not be described here.

[0044] In order to facilitate the rapid assembly of the motor 1, the gear box 10 and the mounting block 2, a signal connection structure is arranged between the motor 1 and the mounting block 2. The signal connection structure includes a connector 11 arranged on the mounting block 2 and connected to the control module and the micro switch 6 signals. A plug 12 connected to the motor 1 signal is arranged on the motor 1. The plug 12 passes through the gear box 10 and is plugged into the connector 11 for signal connection. The signal electrical connection between the motor 1, the control module and the micro switch 6 can be achieved by simply plugging the plug 12 and the connector 11.

[0045] The mounting block 2 is provided with a cover 13, which makes the whole more beautiful and protects various structures provided on the mounting block 2. The cover 13 is provided with an avoidance slot 14 for the rotating rod 4 to pass through.

[0046] The motor 1 drives the rotating rod 4 to rotate until the valve core rotates to the fully closed state of the valve, that is, the contact block 5 rotates to 0°, and the side wall of one side of the contact block 5 touches a micro switch 6, transmitting a signal to the control module to stop the motor 1 from rotating, and the valve core keeps the valve in the fully closed state; when the micro switch 6 fails, the valve core and the contact block 5 continue to rotate 1°, and the side wall of the contact block 5 on this side will abut against the side wall of the limit block 7, limiting the valve core and the contact block 5 from continuing to rotate. After the pulse emission is completed, the motor 1 stops rotating. On the contrary, the motor 1 drives the rotating rod 4 to rotate in the opposite direction until the valve core rotates to the fully open state of the valve, that is, the contact block 5 rotates to 90°, and the side wall of the other side of the contact block 5 touches another micro switch 6, transmitting a signal to the control module to stop the motor 1 from rotating, and the valve core keeps the valve in the fully open state; when the micro switch 6 fails, the valve core and the contact block 5 continue to rotate by 1°, and the side wall of the contact block 5 on this side will abut against the side wall of the other side of the limit block 7, limiting the valve core and the contact block 5 from continuing to rotate. After the pulse emission is completed, the motor 1 stops rotating.

[0047] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A valve opening and closing controller, comprising a motor (1) for controlling the rotation of a valve core, characterized in that: A limiting structure is provided between the motor (1) and the valve core for limiting the valve core from further rotation when the valve core rotates to the point where the valve is fully opened or fully closed. The limiting structure comprises a mounting block (2) provided on the motor (1), a rotating rod (4) rotatably provided on the mounting block (2) and connectable to the valve core, a contact block (5) provided on the outer ring wall of the rotating rod (4), a signal sensing control unit provided between the mounting block (2) and the contact block (5) and contacting the contact block (5) to control the motor (1) to stop rotating when the valve is fully opened or fully closed during the rotation of the contact block (5), and a protective structure for limiting the valve core from further rotation when the signal sensing control unit fails. The rotation of the rotating rod (4) is controlled by the motor (1), and the contact block (5) is controlled by the signal sensing control unit. The rotation range is 0° to 90°. When the valve is fully closed, the contact (5) rotates to 0°; when the valve is fully opened, the contact (5) rotates to 90°. The signal sensing control unit comprises two micro switches (6) fixedly arranged on the mounting block (2) and a control module electrically connected to the two micro switches (6). When the contact (5) rotates to touch the micro switches (6), the control module controls the motor (1) to stop rotating. The two micro switches (6) limit the rotation angle of the contact (5) to 0° to 90°. The protection structure comprises a limit block (7) fixedly arranged on the mounting block (2). When the contact (5) rotates to abut against the limit block (7), the valve core is limited to continue rotating. The limit block (7) limits the rotation angle of the contact (5) to -1° to 91°.

2. A valve opening and closing controller according to claim 1, characterized in that: Transmission is achieved between the motor (1) and the rotating rod (4) via a transmission structure, the transmission structure comprising a first gear (8) rotatably arranged on the mounting block (2), an arc-shaped rack (9) arranged on the contact block (5) and meshing with the first gear (8) and concentric with the rotating rod (4), and a gear box (10) arranged between the motor (1) and the mounting block (2) and respectively connected to the motor (1) and the first gear (8).

3. A valve opening and closing controller according to claim 2, characterized in that: The motor (1), the gear box (10) and the mounting block (2) are detachably connected, and a signal connection structure is provided between the motor (1) and the mounting block (2), the signal connection structure comprising a connector (11) provided on the mounting block (2) and connected to a signal of a micro switch (6), and a plug (12) provided on the motor (1) and passing through the gear box (10) and plugged into the connector (11) for signal connection.

4. A valve opening and closing controller according to claim 1, characterized in that: A cover shell (13) is arranged on the mounting block (2), and an avoidance slot (14) is arranged on the cover shell (13) for the rotating rod (4) to pass through.

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