Pneumatic control device and method

Abstract

The application discloses a kind of pneumatic control device and method, belong to the remote control technical field of pneumatic device, including mobile positioning platform, mobile positioning platform side is provided with gas supply plate, mobile positioning platform is provided with gas supply adapter pipe, gas supply adapter pipe connects gas supply pipe, gas supply pipe connects control box, control box connects gas source;Gas supply plate is arranged with gas supply through hole, gas supply adapter pipe can slide along the surface of gas supply plate under the drive of mobile positioning platform, when gas supply adapter pipe moves to each gas supply through hole position and the air outlet end of gas supply adapter pipe completely covers gas supply through hole, gas supply adapter pipe can be tightly connected with each gas supply through hole and sealed communication, and gas supply through hole is connected with pneumatic device through air outlet pipe.The present application realizes the remote control of a large number of pneumatic devices by mobile positioning platform driving gas supply pipeline for each pneumatic device, avoids the installation of a large number of mine explosion-proof electrical equipment, and the system is simple, easy to install, safe, suitable for installation and use in coal mine.

Description

Technical Field

[0001] This invention belongs to the field of remote control technology for pneumatic devices, and specifically relates to a pneumatic control device and method. Background Technology

[0002] There are tens of thousands of gas drainage boreholes and pipes in coal mines. These pipes are equipped with mechanical valves to regulate the flow of gas. Currently, these valves are mainly adjusted manually. Due to the large number of boreholes and pipes, the manual labor intensity is high, and the adjustment frequency is low. When problems such as gas leakage or blockage are detected in a borehole, it is impossible to remotely shut it down in time. At the same time, it is also impossible to adjust the flow of gas according to the drainage situation of each borehole in a timely and reasonable manner. This results in problems such as unreasonable negative pressure distribution, which affects the drainage efficiency and effectiveness.

[0003] If a set of electric or pneumatic valves is installed on the borehole to the extraction pipeline, and the pipeline's conduction status is controlled remotely by switching the electric or pneumatic valves, automation can be achieved. However, the control of electric valves requires a large amount of electrical wiring. Existing pneumatic valves also mostly use solenoid valves for control, both of which require a large amount of wiring and PLC or CPU control points. In coal mines, especially in gas extraction sites, there are strict controls on live equipment (e.g., cables are not allowed to be laid above extraction pipelines). Even with explosion-proof electrical equipment for mining, the large number of boreholes means that large-scale installation and use poses a significant risk of explosion failure and safety hazards. Furthermore, the extensive wiring and debugging make system construction complex and maintenance inconvenient. In addition, explosion-proof electrical equipment for mining is generally expensive, resulting in high system costs and making it difficult to promote and apply on a large scale.

[0004] To solve the above problems, there is an urgent need for a pneumatic control device and method to realize remote automatic control of a large number of pneumatic devices (such as pneumatic valves), without requiring a large number of electrical equipment or wiring, and with convenient system installation and maintenance, low cost, and suitable for widespread application. Summary of the Invention

[0005] This invention addresses the aforementioned problems and overcomes the shortcomings of existing technologies by providing a pneumatic control device and method. This invention utilizes a mobile positioning platform to drive the air supply pipeline, providing air to each pneumatic device in a time-sharing manner. This enables remote control of a large number of pneumatic devices, avoiding the need for installing numerous explosion-proof electrical equipment for mining. The system is simple, easy to install, highly safe, and low-cost, making it suitable for installation and use in underground coal mines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution.

[0007] The present invention provides a pneumatic control device, including a mobile positioning platform, an air supply plate on one side of the mobile positioning platform, an air supply adapter pipe on the mobile positioning platform, an air supply pipe connected to an air supply tube, an air supply tube connected to a control box, and a control box connected to an air source; air supply holes are arranged on the air supply plate, and the air supply adapter pipe can slide along the surface of the air supply plate under the action of the mobile positioning platform. When the air supply adapter pipe moves to the position of each air supply hole and the air outlet end of the air supply adapter pipe completely covers the air supply hole, the air supply adapter pipe can be pressed tightly and sealed to each air supply hole, and the air supply holes are connected to the pneumatic device through the air outlet pipe.

[0008] Furthermore, the gas supply plate is provided with one or more rows of gas supply holes, and each row of gas supply holes has multiple holes. One or more gas supply adapters are fixedly installed on the mobile positioning platform. One or more gas supply adapters are connected to one or more rows of gas supply holes in a sealed manner. The number of gas supply pipes is set in correspondence with the number of gas supply adapters.

[0009] Furthermore, an air supply adapter is movably installed on the mobile positioning platform, and an auxiliary clamping device is also fixedly installed on the mobile positioning platform. The auxiliary clamping device is fixedly connected to the sealing end of the air supply adapter. The auxiliary clamping device drives the air supply adapter to clamp and seal with each air supply hole. The auxiliary clamping device adopts a telescopic cylinder.

[0010] Furthermore, the pneumatic device is a pneumatic valve.

[0011] Furthermore, the control box includes a circuit board, an air supply interface, an electrically controlled valve group, and an air source connection pipe. The circuit board is electrically connected to the electrically controlled valve group and is used to control the conduction state of the electrically controlled valve group. The electrically controlled valve group is located between the air supply interface and the air source connection pipe and is used to control the conduction state between the air supply interface and the air source connection pipe. The air supply interface is connected to the air supply pipe.

[0012] Furthermore, the mobile positioning platform is a mining mobile platform with both mobility and positioning functions.

[0013] Furthermore, a track is provided below the mobile positioning platform, and the track is set parallel to the air supply plate, allowing the mobile positioning platform to move on the track.

[0014] Furthermore, a positioning sensor for positioning is provided on the side of the mobile positioning platform opposite to the air supply plate. The positioning sensor is electrically connected to the control box, and an identifier for use in conjunction with the positioning sensor is provided at the position directly below the air supply hole on the air supply plate.

[0015] The present invention provides a pneumatic control method, implemented using the aforementioned pneumatic control device, comprising the following steps:

[0016] S1. When it is necessary to control the operation of a certain pneumatic device, control the moving positioning platform to drive the air supply adapter to slide along the surface of the air supply plate to the position of the air supply through hole connected to the corresponding air outlet pipe of the pneumatic device; since the air supply adapter and the surface of the air supply plate are always in a pressed and sealed state, and when the air outlet end of the air supply adapter completely covers the air supply through hole, the air supply adapter and the air supply through hole are in a sealed and connected state.

[0017] S2. The high-pressure gas output is controlled by the control box. The high-pressure gas flows through the gas supply pipe, gas supply adapter pipe, gas supply through hole, and gas outlet pipe to the pneumatic device, supplying gas to the pneumatic device to perform the action.

[0018] S3. Repeat the above steps to achieve remote control of each pneumatic device.

[0019] The present invention also provides a pneumatic control method, implemented using the aforementioned pneumatic control device, comprising the following steps:

[0020] S1. When it is necessary to control the operation of a certain pneumatic device, control the mobile positioning platform to drive the air supply adapter to slide along the surface of the air supply plate to the position of the air supply through hole connected to the corresponding air outlet pipe of the pneumatic device.

[0021] S2. Control the auxiliary pressing device to drive the air supply adapter to move, so that the air supply adapter is pressed and sealed against the surface of the air supply plate, and then sealed and connected with the air supply through hole opened on the air supply plate.

[0022] S3. The high-pressure gas output is controlled by the control box. The high-pressure gas flows through the gas supply pipe, gas supply adapter pipe, gas supply through hole, and gas outlet pipe to the pneumatic device, supplying gas to the pneumatic device to perform the action.

[0023] S4. After the action is completed, control the auxiliary clamping device to retract the air supply adapter, so that the air supply adapter is separated from the surface of the air supply plate and is in a non-clamping state.

[0024] S5. Repeat the above steps to achieve remote control of each pneumatic device.

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

[0026] This invention enables remote control of a large number of pneumatic devices by using a mobile positioning platform to drive the air supply pipeline to supply air to each pneumatic device in a time-sharing manner. This avoids the need for the installation of a large number of explosion-proof electrical equipment for mining. The system is simple, easy to install, highly safe, and low in cost, making it suitable for installation and use in underground coal mines. Attached Figure Description

[0027] Figure 1 This is one of the structural schematic diagrams of an embodiment of the pneumatic control device of the present invention;

[0028] Figure 2This is a second schematic diagram of the structure of the pneumatic control device according to Embodiment 1 of the present invention;

[0029] Figure 3 This is one of the structural schematic diagrams of the pneumatic control device of the present invention, which has multiple rows of air supply holes.

[0030] Figure 4 This is a second schematic diagram of the structure of the pneumatic control device of the present invention, which has multiple rows of air supply holes in one embodiment.

[0031] Figure 5 This is one of the structural schematic diagrams of a second embodiment of the pneumatic control device of the present invention;

[0032] Figure 6 This is a second schematic diagram of the structure of the pneumatic control device according to a second embodiment of the present invention;

[0033] Figure 7 These are schematic diagrams of the control box structure of Embodiment 1 and Embodiment 2 of the pneumatic control device of the present invention;

[0034] The markings in the diagram are as follows: 1 is the air supply plate, 2 is the air supply adapter, 3 is the air supply pipe, 4 is the control box, 5 is the mobile positioning platform; 11 is the air supply through hole, 12 is the air outlet pipe, 13 is the pneumatic device; 21 is the auxiliary pressing device; 41 is the circuit board, 42 is the air supply interface, 43 is the electric control valve group, 44 is the air source connection pipe; 51 is the track, 52 is the positioning sensor, and 53 is the marker. Detailed Implementation

[0035] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0036] Combination Figures 1 to 4 as well as Figure 7 As shown, Embodiment 1 of the present invention provides a pneumatic control device, including a mobile positioning platform 5, an air supply plate 1 is provided on one side of the mobile positioning platform 5, an air supply adapter 2 is provided on the mobile positioning platform 5, the air supply adapter 2 is connected to an air supply pipe 3, the air supply pipe 3 is connected to a control box 4, and the control box 4 is connected to an air source; air supply holes 11 are arranged on the air supply plate 1, and the air supply adapter 2 can slide along the surface of the air supply plate 1 under the action of the mobile positioning platform 5. When the air supply adapter 2 moves to the position of each air supply hole 11 and the air outlet end of the air supply adapter 2 completely covers the air supply hole 11, the air supply adapter 2 can maintain a tight connection and sealed communication with each air supply hole 11, and the air supply hole 11 is connected to the pneumatic device 13 through the air outlet pipe 12.

[0037] The air supply plate 1 is provided with one or more rows of air supply holes 11, such as Figure 3and Figure 4 The diagram shows a pneumatic control device with multiple rows of air supply holes 11. Each row of air supply holes 11 has multiple holes. One or more air supply adapters 2 are fixedly installed on the mobile positioning platform 5. One or more air supply adapters 2 are connected to one or more rows of air supply holes 11 in a sealed manner. The number of air supply pipes 3 corresponds to the number of air supply adapters 2.

[0038] Preferably, the pneumatic device 13 is a pneumatic valve.

[0039] The control box 4 includes a circuit board 41, an air supply interface 42, an electrically controlled valve group 43, and an air source connection pipe 44. The circuit board 41 is electrically connected to the electrically controlled valve group 43, and the circuit board 41 is used to control the conduction state of the electrically controlled valve group 43. The electrically controlled valve group 43 is located between the air supply interface 42 and the air source connection pipe 44, and the electrically controlled valve group 43 is used to control the conduction state between the air supply interface 42 and the air source connection pipe 44. The air supply interface 42 is connected to the air supply pipe 3.

[0040] The mobile positioning platform 5 is a mining mobile platform with movement and positioning functions. A track 51 is set below the mobile positioning platform 5, and the track 51 is set parallel to the air supply plate 1. The mobile positioning platform 5 moves on the track 51. The mobile positioning platform 5 can drive the air supply adapter 2 to slide and be positioned along the surface of the air supply plate 1, so as to realize the time-division positioning of the air supply adapter 2 at each air supply hole 11. Since the air supply adapter 2 and the air supply plate 1 are in a compressed and sealed connection state, they are sealed and connected to each air supply hole 11.

[0041] The movement of the mobile positioning platform 5 includes, but is not limited to, self-drive via a carrying motor, external drive via a lead screw and slider, or external drive via a winch and rope. Preferably, the mobile positioning platform 5 is pneumatically driven. The mobile positioning platform 5 is connected to the air supply interface 42 of the control box 4 via an air pipe, and the control box 4 controls the start, stop, and direction of travel of the mobile positioning platform 5.

[0042] The positioning method of the mobile positioning platform 5 is as follows: a positioning sensor 52 for positioning is provided on the side of the mobile positioning platform 5 opposite to the air supply plate 1. The positioning sensor 52 is electrically connected to the control box 4. A marker for use with the positioning sensor 52 is provided at the position directly below the air supply hole 11 on the air supply plate 1. When the positioning sensor 52 moves to the position of the marker 53, the positioning sensor 52 receives a signal and transmits the signal to the control box 4. The control box 4 can control the mobile positioning platform 5 to stop moving immediately, and the air supply adapter 2 stops moving at the same time. At this position, the air supply adapter 2 and the air supply hole 11 are in a sealed communication state.

[0043] Embodiment 1 of the present invention also provides a pneumatic control method, implemented using the pneumatic control device of Embodiment 1, comprising the following steps:

[0044] S1. When it is necessary to control the operation of a certain pneumatic device 13, the control mobile positioning platform 5 drives the air supply adapter 2 to slide along the surface of the air supply plate 1 to the position of the air supply through hole 11 connected to the corresponding air outlet pipe 12 of the pneumatic device 13; since the air supply adapter 2 and the surface of the air supply plate 1 are always in a pressed and sealed state, and when the air outlet end of the air supply adapter 2 completely covers the air supply through hole 11, the air supply adapter 2 and the air supply through hole 11 are in a sealed and connected state.

[0045] S2. The high-pressure gas output is controlled by the control box 4. The high-pressure gas flows through the gas supply pipe 3, the gas supply adapter pipe 2, the gas supply through hole 11, and the gas outlet pipe 12 to the pneumatic device 13, supplying gas to the pneumatic device 13 to perform the action.

[0046] S3. Repeat the above steps to achieve remote control of each pneumatic device 13.

[0047] In addition, combined Figures 5 to 7 As shown in the figure, Embodiment 2 of the present invention provides a pneumatic control device, including a mobile positioning platform 5, an air supply plate 1 is provided on one side of the mobile positioning platform 5, an air supply adapter 2 is provided on the mobile positioning platform 5, the air supply adapter 2 is connected to an air supply pipe 3, the air supply pipe 3 is connected to a control box 4, and the control box 4 is connected to an air source; air supply holes 11 are arranged on the air supply plate 1, and the air supply adapter 2 can slide along the surface of the air supply plate 1 under the drive of the mobile positioning platform 5. When the air supply adapter 2 moves to the position of each air supply hole 11 and the air outlet end of the air supply adapter 2 completely covers the air supply hole 11, the air supply adapter 2 can maintain a tight connection with each air supply hole 11 and a sealed connection. The air supply holes 11 are connected to the pneumatic device 13 through the air outlet pipe 12.

[0048] The mobile positioning platform 5 is movably equipped with an air supply transfer pipe 2, and an auxiliary pressing device 21 is also fixedly installed on the mobile positioning platform 5. The auxiliary pressing device 21 is fixedly connected to the sealing end of the air supply transfer pipe 2. The auxiliary pressing device 21 drives the air supply transfer pipe 2 to press and connect with each air supply hole 11 and seal the connection.

[0049] Preferably, the pneumatic device 13 is a pneumatic valve.

[0050] The control box 4 includes a circuit board 41, an air supply interface 42, an electrically controlled valve group 43, and an air source connection pipe 44. The circuit board 41 is electrically connected to the electrically controlled valve group 43, and the circuit board 41 is used to control the conduction state of the electrically controlled valve group 43. The electrically controlled valve group 43 is located between the air supply interface 42 and the air source connection pipe 44, and the electrically controlled valve group 43 is used to control the conduction state between the air supply interface 42 and the air source connection pipe 44. The air supply interface 42 is connected to the air supply pipe 3.

[0051] The mobile positioning platform 5 is a mining mobile platform with movement and positioning functions. A track 51 is set below the mobile positioning platform 5, and the track 51 is set parallel to the air supply plate 1. The mobile positioning platform 5 moves on the track 51. The mobile positioning platform 5 can drive the air supply adapter 2 to slide and be positioned along the surface of the air supply plate 1, so as to realize the time-division positioning of the air supply adapter 2 at each air supply hole 11. Since the air supply adapter 2 and the air supply plate 1 are in a compressed and sealed connection state, they are sealed and connected to each air supply hole 11.

[0052] The movement of the mobile positioning platform 5 includes, but is not limited to, self-drive via a carrying motor, external drive via a lead screw and slider, or external drive via a winch and rope. Preferably, the mobile positioning platform 5 is pneumatically driven. The mobile positioning platform 5 is connected to the air supply interface 42 of the control box 4 via an air pipe, and the control box 4 controls the start, stop, and direction of travel of the mobile positioning platform 5.

[0053] The positioning method of the mobile positioning platform 5 is as follows: a positioning sensor 52 for positioning is provided on the side of the mobile positioning platform 5 opposite to the air supply plate 1. Preferably, the positioning sensor 52 is a proximity or limit switch. The positioning sensor 52 is electrically connected to the control box 4. A marker for use with the positioning sensor 52 is provided at the position directly below the air supply hole 11 on the air supply plate 1. When the positioning sensor 52 moves to the position of the marker 53, the positioning sensor 52 receives a signal and transmits the signal to the control box 4. The control box 4 can control the mobile positioning platform 5 to stop moving immediately, and the air supply adapter 2 stops moving at the same time. At this position, the air supply adapter 2 and the air supply hole 11 are in a sealed communication state.

[0054] Since the air supply pressure of the pneumatic device 13 is generally above 0.2MPa, and the underground compressed air is generally 0.6-0.8MPa, under this high pressure condition, in order to ensure sealing stability and reduce the moving resistance of the mobile positioning platform 5, this embodiment sets up the auxiliary pressing device 21 to ensure the sealing stability of the air supply adapter 2 and each air supply through hole 11 and to reduce the moving resistance of the mobile positioning platform 5. The auxiliary pressing device 21 is connected to the control box 4 through an air pipe or cable, and the operation of the auxiliary pressing device 21 is controlled by the control box 4.

[0055] Preferably, the auxiliary pressing device 21 adopts a telescopic cylinder, which is connected to the air supply interface 42 of the control box 4 through an air pipe. When it is necessary to supply air to the pneumatic device 13, the auxiliary pressing device 21 can push the air supply adapter 2 to move relative to the moving positioning platform 5, so that the air supply adapter 2 is in full contact with the air supply through hole 11 on the air supply plate 1 and is in a pressing state. When the moving positioning platform 5 needs to move, the auxiliary pressing device 21 can be controlled to retract the air supply adapter 2, so that the air supply adapter 2 is released from the pressing state with the air supply through hole 11 on the air supply plate 1, thereby reducing the moving resistance of the moving positioning platform 5.

[0056] Embodiment 2 of the present invention also provides a pneumatic control method, implemented using the pneumatic control device of Embodiment 2, comprising the following steps:

[0057] S1. When it is necessary to control the operation of a certain pneumatic device 13, control the operation of the mobile positioning platform 5 to drive the air supply adapter 2 to slide along the surface of the air supply plate 1 to the position of the air supply through hole 11 connected to the corresponding air outlet pipe 12 of the pneumatic device 13.

[0058] S2. Control the auxiliary pressing device 21 to drive the air supply transfer pipe 2 to move, so that the air supply transfer pipe 2 is pressed and sealed against the surface of the air supply plate 1, and then sealed and connected with the air supply through hole 11 opened on the air supply plate 1.

[0059] S3. Control the output of high-pressure gas through the control box 4. The high-pressure gas flows through the gas supply pipe 3, the gas supply adapter pipe 2, the gas supply through hole 11, and the gas outlet pipe 12 to the pneumatic device 13, supplying gas to the pneumatic device 13 to perform the action.

[0060] S4. After the action is completed, control the auxiliary pressing device 21 to retract the air supply transfer pipe 2, so that the air supply transfer pipe 2 is separated from the surface of the air supply plate 1 and is in a non-pressurized state.

[0061] S5. Repeat the above steps to achieve remote control of each pneumatic device 13.

[0062] It is understood that the above specific description of the present invention is only for illustrating the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of the present invention.

Claims

1. A pneumatic control device, characterized in that: The system includes a mobile positioning platform, an air supply plate on one side of the platform, an air supply adapter pipe on the platform, an air supply pipe connected to an air supply tube, an air supply tube connected to a control box, and a control box connected to an air source. The air supply plate has air supply holes arranged on it. The air supply adapter pipe can slide along the surface of the air supply plate under the action of the mobile positioning platform. When the air supply adapter pipe moves to the position of each air supply hole and the air outlet of the air supply adapter pipe completely covers the air supply hole, the air supply adapter pipe can press tightly against each air supply hole and seal the connection. The air supply holes are connected to a pneumatic device through an air outlet pipe. The mobile positioning platform is movably equipped with an air supply transfer pipe, and an auxiliary pressing device is also fixedly installed on the mobile positioning platform. The auxiliary pressing device is fixedly connected to the sealing end of the air supply transfer pipe. The auxiliary pressing device drives the air supply transfer pipe to press and connect with each air supply hole and seal the connection. The auxiliary clamping device uses a telescopic cylinder, which is connected to the air supply interface of the control box via an air pipe. When air needs to be supplied to the pneumatic device, the auxiliary clamping device pushes the air supply adapter pipe to move relative to the moving positioning platform, thereby making the air supply adapter pipe fully contact the air supply through hole on the air supply plate and put it in a clamping state. When the moving positioning platform needs to move, the auxiliary clamping device is controlled to retract the air supply adapter pipe, so that the air supply adapter pipe is released from the clamping state with the air supply through hole on the air supply plate, thereby reducing the moving resistance of the moving positioning platform.

2. The pneumatic control device according to claim 1, characterized in that: The feature of the above is that the pneumatic device is a pneumatic valve.

3. The pneumatic control device according to claim 1, characterized in that: The control box includes a circuit board, an air supply interface, an electrically controlled valve group, and an air source connection pipe. The circuit board is electrically connected to the electrically controlled valve group and is used to control the conduction state of the electrically controlled valve group. The electrically controlled valve group is located between the air supply interface and the air source connection pipe and is used to control the conduction state between the air supply interface and the air source connection pipe. The air supply interface is connected to the air supply pipe.

4. A pneumatic control device according to claim 1, characterized in that: The mobile positioning platform is a mining mobile platform with both mobility and positioning functions.

5. A pneumatic control device according to claim 1, characterized in that: A track is installed below the mobile positioning platform, and the track is set parallel to the air supply plate, allowing the mobile positioning platform to move on the track.

6. A pneumatic control device according to claim 1, characterized in that: A positioning sensor for positioning is provided on the side of the mobile positioning platform opposite to the air supply plate. The positioning sensor is electrically connected to the control box. A marker for use with the positioning sensor is provided at the position directly below the air supply hole on the air supply plate.

7. A pneumatic control method, characterized in that: Implementing the pneumatic control device according to claim 1 includes the following steps: S1. When it is necessary to control the operation of a certain pneumatic device, control the mobile positioning platform to drive the air supply adapter to slide along the surface of the air supply plate to the position of the air supply through hole connected to the corresponding air outlet pipe of the pneumatic device. S2. Control the auxiliary pressing device to drive the air supply adapter to move, so that the air supply adapter is pressed and sealed against the surface of the air supply plate, and then sealed and connected with the air supply through hole opened on the air supply plate. S3. The high-pressure gas output is controlled by the control box. The high-pressure gas flows through the gas supply pipe, gas supply adapter pipe, gas supply through hole, and gas outlet pipe to the pneumatic device, supplying gas to the pneumatic device to perform the action. S4. After the action is completed, control the auxiliary clamping device to retract the air supply adapter, so that the air supply adapter is separated from the surface of the air supply plate and is in a non-clamping state. S5. Repeat the above steps to achieve remote control of each pneumatic device.

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