Intermittent spraying control device

Abstract

The utility model discloses an intermittent spraying control device. The device is characterized in that an outlet of an air filtering combined duplex piece is connected with an air inlet of a two-lever roller type pneumatic machine control valve, and an air outlet of the two-lever roller type pneumatic machine control valve is connected with control ports at two ends of a two-position five-way pneumatic valve; two air outlets of the two-position five-way pneumatic valve are connected with two air ports of the double-outlet-rod non-rotation air cylinder through connecting pipelines. The first ball valve and the second ball valve are double-acting air valves and are provided with opening ports and closing ports, the opening ports of the first ball valve and the second ball valve are connected into the same connecting pipeline in parallel, and the closing ports of the first ball valve and the second ball valve are connected into the other connecting pipeline in parallel; the two piston rods of the double-outlet-rod non-rotation air cylinder can touch the idler wheels of the two lever idler wheel type pneumatic machine control valves, and the opening and closing states of the lever idler wheel type pneumatic machine control valves are changed. The problem that water is accumulated on the ground due to long-time spraying can be avoided, and a more efficient dust removal mode is achieved in a wind-water linkage mode.

Description

Technical Field

[0001] This utility model relates to the field of coal mine dust removal, specifically to a control device for fine water gap spray dust removal. Background Technology

[0002] Coal production generates a large amount of dust, among which dust particles smaller than 5μm in diameter are called respirable dust. Respirable dust can directly enter the alveoli and deposit, leading to pneumoconiosis, which is a significant occupational hazard that harms workers' health.

[0003] Existing dust control technologies in coal mines include wet drilling, ventilation and dust removal, air purification, roadway spraying, water spraying during rock loading, and roadway wall washing. Among these, spraying is a common and effective method. Currently, most coal mine roadway spraying devices use continuous spraying, which has the drawback of causing water accumulation on the ground after prolonged spraying. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and propose an intermittent spray control device that can avoid the problem of water accumulation on the ground due to prolonged spraying, while achieving a more efficient dust removal method through wind and water linkage.

[0005] To achieve the above objectives, the present invention proposes the following technical solution:

[0006] An intermittent spray control device includes an air filter assembly, a two-position five-way pneumatic valve, a double-outlet non-rotating cylinder, a first ball valve for controlling water supply, a second ball valve for controlling air supply, and two lever-roller type pneumatic control valves.

[0007] The outlet of the air filter assembly is connected to the air inlet of a two-position five-way pneumatic valve and two lever-roller type pneumatic control valves, respectively. The outlet of the two lever-roller type pneumatic control valves is connected to the control ports at both ends of the two-position five-way pneumatic valve.

[0008] The dual-rod non-rotating cylinder is a cylinder with two piston rods that do not rotate during operation. It has two air ports, and the two piston rods can extend from both ends of the cylinder. The two piston rods move in opposite directions, which is a concept already existing in the prior art.

[0009] The two outlets of the two-position five-way pneumatic valve are connected to the two outlets of the double-rod non-rotating cylinder via connecting pipes.

[0010] The first ball valve and the second ball valve are double-acting stainless steel pneumatic ball valves. The valve body is opened and closed by a pneumatic actuator. The pneumatic actuator has two control ports, namely an opening port and a closing port. Gas enters from the opening port to open the first ball valve and the second ball valve, and gas is discharged from the closing port. Gas enters from the closing port to close the first ball valve and the second ball valve, and gas is discharged from the opening port.

[0011] The first ball valve is connected to the water supply pipe of the spray head, and the second ball valve is connected to the air supply pipe of the spray head. The first ball valve and the second ball valve need to be opened or closed at the same time to start and stop the spray. When the first ball valve and the second ball valve are opened at the same time, the spraying starts, and when the first ball valve and the second ball valve are closed at the same time, the spraying stops. This part is already in the prior art.

[0012] The first ball valve and the second ball valve are connected in parallel to the connecting pipes of the two-position five-way pneumatic valve and the double-rod non-rotating cylinder, respectively. The opening ports of the first ball valve and the second ball valve are connected in parallel to the same connecting pipe, and the closing ports of the first ball valve and the second ball valve are connected in parallel to another connecting pipe, so that the first ball valve and the second ball valve open or close synchronously.

[0013] Two lever-roller pneumatic control valves are located on both sides of a double-rod non-rotating cylinder. The two piston rods of the double-rod non-rotating cylinder can touch the rollers of the two lever-roller pneumatic control valves, applying external force to the rollers to change the opening and closing state of the lever-roller pneumatic control valves. This causes the lever-roller pneumatic control valves to open, allowing the pressurized gas from the air filter assembly to enter the control ports at both ends of the two-position five-way pneumatic valve through the lever-roller pneumatic control valves. This switches the valve rod position of the two-position five-way pneumatic valve, changing the outlet state of the two-position five-way pneumatic valve. When the piston rods move away from the two lever-roller pneumatic control valves, the lever-roller pneumatic control valves return to the closed state.

[0014] Preferably, one-way throttle valves are respectively installed on the connecting pipes of the two-position five-way pneumatic valve and the double-outlet non-rotating cylinder to control the flow rate of pressurized gas from the two-position five-way pneumatic valve to the double-outlet non-rotating cylinder. Gas can also flow from the double-outlet non-rotating cylinder to the two-position five-way pneumatic valve without controlling the flow rate. The spraying time or intermittent time can be changed by adjusting the flow rate of the one-way throttle valve.

[0015] Preferably, the opening ports of the first ball valve and the second ball valve are connected to the same connecting pipe at the same parallel connection point, and the closing ports of the first ball valve and the second ball valve are connected to another connecting pipe at the same parallel connection point, so as to better ensure the synchronization of gas and water supply.

[0016] Preferably, the one-way throttle valve is placed between the parallel connection point of the first ball valve and the second ball valve and the air port of the double-rod non-rotating cylinder. It controls the flow rate of the pressurized gas from the two-position five-way pneumatic valve to the double-rod non-rotating cylinder, but does not control the flow rate from the two-position five-way pneumatic valve to the first ball valve and the second ball valve, thus ensuring the timeliness of spraying on and off while ensuring the intermittency of spraying.

[0017] Preferably, an adjustment platform is provided below the lever-roller type pneumatic control valve. A screw and a slider are provided on the adjustment platform, and the screw and slider are threadedly connected. An adjustment wheel is provided on the screw; rotating the adjustment wheel allows the slider to move along the screw axis. A pointer is provided at the bottom of the slider, and a scale is provided below the adjustment platform. The pointer and scale correspond, and the position of the slider is confirmed by the scale. The lever-roller type pneumatic control valve is fixed on the slider of the adjustment platform to form a mechanical control valve device. Rotating the adjustment wheel can drive the lever-roller type pneumatic control valve to move synchronously. By adjusting the position of the adjustment platform, the distance between the piston rod of the double-outlet non-rotating cylinder and the lever-roller type pneumatic control valve can be adjusted, changing the piston rod's movement time and thus changing the spray time or intermittent time.

[0018] Preferably, the device also includes two shuttle valves and two manual two-position three-way valves. The air inlets of the two manual two-position three-way valves are connected to the outlet of the air filter assembly. The two air inlets of the shuttle valves are respectively connected to the air outlet of the manual two-position three-way valve and the air outlet of the lever-roller pneumatic control valve. Pressurized gas enters the shuttle valve through the manual two-position three-way valve or the lever-roller pneumatic control valve, which can open the shuttle valve. The air outlets of the two shuttle valves are respectively connected to the control ports at both ends of the two-position five-way pneumatic valve. The shuttle valves and manual two-position three-way valves enable temporary stopping and starting of the spray, preventing personnel from getting their clothes wet, and allowing for timely spraying when dust removal is needed, thus improving the flexibility of the spraying device.

[0019] Specifically, the two outlets of the two-position five-way pneumatic valve are the first outlet and the second outlet. The left outlet is set as the first outlet and the right outlet as the second outlet. The port on the two-position five-way pneumatic valve that is on the same side as the first outlet is the first control port, and the port on the same side as the second outlet is the second control port.

[0020] In the dual-rod non-rotating cylinder, the port corresponding to the first outlet is the first port, and the port corresponding to the second outlet is the second port. The piston rod on the same side as the first port is the first piston rod, and the piston rod on the same side as the second port is the second piston rod. The lever-roller type pneumatic control valve corresponding to the first piston rod is the first lever-roller type pneumatic control valve, and the lever-roller type pneumatic control valve corresponding to the second piston rod is the second lever-roller type pneumatic control valve.

[0021] The connecting pipe between the first air outlet and the first air port is the first connecting pipe, and the connecting pipe between the second air outlet and the second air port is the second connecting pipe.

[0022] The opening ports of the first ball valve and the second ball valve are connected in parallel to the first connecting pipe, and the closing ports of the first ball valve and the second ball valve are connected in parallel to the second connecting pipe.

[0023] Assuming the initial state, the valve stem of the two-position five-way pneumatic valve is on the right, the first outlet of the two-position five-way pneumatic valve is in the open state, and the second outlet is closed. That is, the pressurized gas from the air filter assembly enters the two-position five-way pneumatic valve, and enters the double-rod non-rotating cylinder through the first outlet, the first connecting pipe, and the first air port of the two-position five-way pneumatic valve. This causes the second piston rod of the double-rod non-rotating cylinder to move to the right. At the same time, the pressurized gas enters the opening ports of the first ball valve and the second ball valve, opening the first ball valve and the second ball valve, and starting the spray dust removal.

[0024] During the rightward movement of the second piston rod, the gas on the right side of the double-rod non-rotating cylinder flows out from the second air port, mixes with the gas flowing out from the closed ports of the first and second ball valves, and is discharged through the exhaust port of the two-position five-way pneumatic valve.

[0025] The second piston rod moves to the right until it touches the second lever roller pneumatic control valve, opening the valve and allowing pressurized air to enter the second control port of the two-position five-way pneumatic valve. This changes the valve stem position of the two-position five-way pneumatic valve, pushing it to the left and closing the first outlet while opening the second outlet. Pressurized gas then enters the right side of the double-rod non-rotating cylinder through the second outlet, the second connecting pipe, and the second port, pushing the first piston rod to the left. Simultaneously, pressurized gas enters the closing ports of the first and second ball valves, closing them and stopping the spray.

[0026] During the leftward movement of the first piston rod, the gas on the left side of the double-rod non-rotating cylinder flows out from the first air port, mixes with the gas flowing out from the opening ports of the first and second ball valves, and is discharged through the exhaust port of the two-position five-way pneumatic valve.

[0027] The first piston rod moves to the left until it touches the first lever-roller pneumatic control valve, opening it. Pressurized gas enters the first control port of the 2-position 5-way pneumatic valve through this valve, changing the valve stem position and pushing it to the right. This closes the second outlet of the 2-position 5-way pneumatic valve and opens the first outlet. Pressurized gas then enters the double-rod non-rotating cylinder through the first outlet and the first port, causing the second piston rod of the cylinder to move to the right. Simultaneously, pressurized gas enters the opening ports of the first and second ball valves, opening them and resuming spraying. During the rightward movement of the second piston rod, gas from the left side of the double-rod non-rotating cylinder flows out from the second port, mixing with the gas flowing out from the closed ports of the first and second ball valves and exiting through the exhaust port of the 2-position 5-way pneumatic valve. Thus, intermittent spraying repeats.

[0028] The beneficial effects of this utility model are as follows:

[0029] This utility model uses an air filter assembly, a two-position five-way pneumatic valve, a double-outlet non-rotating cylinder, a first ball valve to control water supply, a second ball valve to control air supply, and two lever-roller type pneumatic control valves to form an intermittent spraying execution component. This avoids the problem of water accumulation on the ground due to prolonged spraying and achieves a more efficient dust removal method through air-water linkage.

[0030] This invention features an adjustment platform located below the lever-roller type pneumatic control valve. The adjustment platform and the lever-roller type pneumatic control valve together form a mechanical control valve device. Rotating the adjustment wheel of the adjustment platform can drive the lever-roller type pneumatic control valve to move synchronously. The spraying time or intermittent time can be changed by adjusting the position of the adjustment platform.

[0031] This invention, through the setting of a shuttle valve and a manual two-position three-way valve, can realize the temporary stopping and starting of spraying, preventing personnel from getting their clothes wet, and can also spray in time when dust removal is needed, thus improving the flexibility of the spraying device.

[0032] By adopting the above solution, this utility model can avoid the problem of water accumulation on the ground after long-term spraying, and at the same time achieve a more efficient dust removal method through wind and water linkage. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1This is a flowchart of the first embodiment.

[0035] Figure 2 This is a schematic diagram of the first process of the second embodiment.

[0036] Figure 3 This is a schematic diagram of the second process of the second embodiment.

[0037] In the diagram, 1-first shuttle valve, 1-1 second shuttle valve, 2-first manual two-position three-way valve, 2-1-second manual two-position three-way valve, 3-two-position five-way pneumatic valve, 31-first air outlet, 32-second air outlet, 33-first control port, 34-second control port, 4-air filter assembly, 5-first ball valve, 5-1-second ball valve, 6-first adjusting platform, 6-1-second adjusting platform, 7-first lever roller type pneumatic control valve, 7-1-second lever roller type pneumatic control valve, 8-first one-way throttle valve, 8-1-second one-way throttle valve, 9-double rod non-rotating cylinder, 91-first piston rod, 92-second piston rod, 93-first air port, 94-second air port. Detailed Implementation

[0038] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0039] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0040] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] First embodiment:

[0043] like Figure 1 As shown, it includes an air filter assembly 4, a two-position five-way pneumatic valve 3, a double-rod non-rotating cylinder 9, a first ball valve 5 for controlling water supply, a second ball valve 5-1 for controlling air supply, and two lever-roller type pneumatic control valves.

[0044] The outlet of the air filter assembly 4 is connected to the air inlet of the two-position five-way pneumatic valve 3 and the two lever roller type pneumatic control valves, respectively. The air outlet of the two lever roller type pneumatic control valves is connected to the control ports at both ends of the two-position five-way pneumatic valve 3, respectively.

[0045] The dual-rod non-rotating cylinder 9 is a cylinder with two piston rods that do not rotate during operation. It has two air ports, and the two piston rods can extend from both ends of the cylinder. The two piston rods move in opposite directions, which is a concept already existing in the prior art.

[0046] The two outlets of the two-position five-way pneumatic valve 3 are connected to the two outlets of the double-rod non-rotating cylinder 9 via connecting pipes.

[0047] The first ball valve 5 and the second ball valve 5-1 are double-acting stainless steel pneumatic ball valves. The valve body is opened and closed by a pneumatic actuator. The pneumatic actuator has two control ports, namely an opening port and a closing port. Gas enters from the opening port to open the first ball valve 5 and the second ball valve 5-1, and gas is discharged from the closing port. Gas enters from the closing port to close the first ball valve 5 and the second ball valve 5-1, and gas is discharged from the opening port.

[0048] The first ball valve 5 is connected to the water supply pipe of the spray head, and the second ball valve 5-1 is connected to the air supply pipe of the spray head. The first ball valve 5 and the second ball valve 5-1 need to be opened or closed at the same time to start and stop the spray. When the first ball valve 5 and the second ball valve 5-1 are opened at the same time, the spraying starts. When the first ball valve 5 and the second ball valve 5-1 are closed at the same time, the spraying stops. This part is the content already existing in the prior art.

[0049] The first ball valve 5 and the second ball valve 5-1 are connected in parallel to the connecting pipes of the two-position five-way pneumatic valve 3 and the double-rod non-rotating cylinder 9, respectively. The opening ports of the first ball valve 5 and the second ball valve 5-1 are connected in parallel to the same connecting pipe, and the closing ports of the first ball valve 5 and the second ball valve 5-1 are connected in parallel to another connecting pipe, so that the first ball valve 5 and the second ball valve 5-1 open or close synchronously.

[0050] Two lever-roller pneumatic control valves are located on both sides of the double-rod non-rotating cylinder 9. The two piston rods of the double-rod non-rotating cylinder 9 can touch the rollers of the two lever-roller pneumatic control valves, applying external force to the rollers to change the opening and closing state of the lever-roller pneumatic control valves. This causes the lever-roller pneumatic control valves to open, allowing the pressurized gas from the air filter assembly 4 to enter the control ports at both ends of the two-position five-way pneumatic valve 3 through the lever-roller pneumatic control valves. This switches the valve rod position of the two-position five-way pneumatic valve 3, changing the outlet state of the two-position five-way pneumatic valve 3. When the piston rod moves away from the two lever-roller pneumatic control valves, the lever-roller pneumatic control valves return to the closed state.

[0051] Specifically, the two outlets of the two-position five-way pneumatic valve 3 are the first outlet 31 and the second outlet 32. The left outlet is set as the first outlet 31 and the right outlet is set as the second outlet 32. The port on the two-position five-way pneumatic valve 3 that is on the same side as the first outlet 31 is the first control port 33, and the port on the same side as the second outlet 32 ​​is the second control port 34.

[0052] Of the two air ports of the double-outlet non-rotating cylinder 9, the one corresponding to the first air outlet 31 is the first air port 93, and the one corresponding to the second air outlet 32 ​​is the second air port 94. The piston rod on the same side as the first air port 93 is the first piston rod 91, and the piston rod on the same side as the second air port 94 is the second piston rod 92. The lever-roller type pneumatic control valve corresponding to the first piston rod 91 is the first lever-roller type pneumatic control valve 7, and the lever-roller type pneumatic control valve corresponding to the second piston rod 92 is the second lever-roller type pneumatic control valve 7-1.

[0053] The connecting pipe between the first air outlet 31 and the first air port 93 is the first connecting pipe, and the connecting pipe 94 between the second air outlet 32 ​​and the second air port is the second connecting pipe.

[0054] The opening ports of the first ball valve 5 and the second ball valve 5-1 are connected in parallel to the first connecting pipe, and the closing ports of the first ball valve 5 and the second ball valve 5-1 are connected in parallel to the second connecting pipe.

[0055] Assuming the initial state, the valve stem of the two-position five-way pneumatic valve 3 is on the right side, the first outlet 31 of the two-position five-way pneumatic valve 3 is in the connected state, and the second outlet 32 ​​is closed. That is, the pressurized gas from the air filter assembly 4 enters the two-position five-way pneumatic valve 3, and enters the double-rod non-rotating cylinder 9 through the first outlet 31, the first connecting pipe, and the first air port 93 of the two-position five-way pneumatic valve 3. This causes the second piston rod 92 of the double-rod non-rotating cylinder 9 to move to the right. At the same time, the pressurized gas enters the opening ports of the first ball valve 5 and the second ball valve 5-1, opening the first ball valve 5 and the second ball valve 5-1, and starting the spray dust removal.

[0056] During the rightward movement of the second piston rod 92, the gas on the right side of the double-outlet non-rotating cylinder flows out from the second air port 94, mixes with the gas flowing out from the closed ports of the first ball valve 5 and the second ball valve 5-1, and is discharged through the exhaust port of the two-position five-way pneumatic valve 3.

[0057] The second piston rod 92 moves to the right until it touches the second lever roller type pneumatic control valve 7-1, opening the second lever roller type pneumatic control valve 7-1. This allows pressurized air to enter the second control port 34 of the two-position five-way pneumatic valve 3 through the second lever roller type pneumatic control valve 7-1, changing the valve stem position of the two-position five-way pneumatic valve 3 and pushing the valve stem of the two-position five-way pneumatic valve 3 to the left. This causes the first air outlet 31 of the two-position five-way pneumatic valve 3 to close, and the second air outlet 32 ​​to open. Figure 1 As shown, the pressurized gas enters the right side of the double-rod non-rotating cylinder 9 through the second outlet 32, the second connecting pipe, and the second air port 94, pushing the first piston rod 91 to the left. At the same time, the pressurized gas enters the closing ports of the first ball valve 5 and the second ball valve 5-1, causing the first ball valve 5 and the second ball valve 5-1 to close and stop spraying.

[0058] During the leftward movement of the first piston rod 91, the gas on the left side of the double-rod non-rotating cylinder 9 flows out from the first air port 93, mixes with the gas flowing out from the opening ports of the first ball valve 5 and the second ball valve 5-1, and is discharged through the exhaust port of the two-position five-way pneumatic valve 3.

[0059] The first piston rod 91 moves to the left until it touches the first lever roller pneumatic control valve 7, opening the first lever roller pneumatic control valve 7. Pressurized gas enters the first control port 33 of the two-position five-way pneumatic valve 3 through the first lever roller pneumatic control valve 7, changing the valve stem position of the two-position five-way pneumatic valve 3. This pushes the valve stem of the two-position five-way pneumatic valve 3 to the right, causing the second outlet 32 ​​of the two-position five-way pneumatic valve 3 to close and the first outlet 31 to open. Pressurized gas flows through the first outlet 31 and the first port 93. Entering the double-acting non-rotating cylinder 9 causes the second piston rod 92 of the cylinder 9 to move to the right. Simultaneously, pressurized gas enters the opening ports of the first ball valve 5 and the second ball valve 5-1, causing the first ball valve 5 and the second ball valve 5-1 to open and resume spraying. During the rightward movement of the second piston rod 92, the gas on the left side of the double-acting non-rotating cylinder 9 flows out from the second air port 94, mixes with the gas flowing out from the closed ports of the first ball valve 5 and the second ball valve 5-1, and is discharged through the exhaust port of the two-position five-way pneumatic valve 3. Thus, intermittent spraying is repeated.

[0060] Second embodiment:

[0061] like Figure 2 and 3 As shown, it includes an air filter assembly 4, a two-position five-way pneumatic valve 3, a double-rod non-rotating cylinder 9, a first ball valve 5 for controlling water supply, a second ball valve 5-1 for controlling air supply, and two lever-roller type pneumatic control valves.

[0062] The outlet of the air filter assembly 4 is connected to the air inlet of the two-position five-way pneumatic valve 3 and the two lever roller type pneumatic control valves, respectively. The air outlet of the two lever roller type pneumatic control valves is connected to the control ports at both ends of the two-position five-way pneumatic valve 3, respectively.

[0063] The dual-rod non-rotating cylinder 9 is a cylinder with two piston rods that do not rotate during operation. It has two air ports, and the two piston rods can extend from both ends of the cylinder. The two piston rods move in opposite directions, which is a concept already existing in the prior art.

[0064] The two outlets of the two-position five-way pneumatic valve 3 are connected to the two outlets of the double-rod non-rotating cylinder 9 via connecting pipes.

[0065] The first ball valve 5 and the second ball valve 5-1 are double-acting stainless steel pneumatic ball valves. The valve body is opened and closed by a pneumatic actuator. The pneumatic actuator has two control ports, namely an opening port and a closing port. Gas enters from the opening port to open the first ball valve 5 and the second ball valve 5-1, and gas is discharged from the closing port. Gas enters from the closing port to close the first ball valve 5 and the second ball valve 5-1, and gas is discharged from the opening port.

[0066] The first ball valve 5 is connected to the water supply pipe of the spray head, and the second ball valve 5-1 is connected to the air supply pipe of the spray head. The first ball valve 5 and the second ball valve 5-1 need to be opened or closed at the same time to start and stop the spray. When the first ball valve 5 and the second ball valve 5-1 are opened at the same time, the spraying starts. When the first ball valve 5 and the second ball valve 5-1 are closed at the same time, the spraying stops. This part is the content already existing in the prior art.

[0067] The first ball valve 5 and the second ball valve 5-1 are connected in parallel to the connecting pipes of the two-position five-way pneumatic valve 3 and the double-rod non-rotating cylinder 9, respectively. The opening ports of the first ball valve 5 and the second ball valve 5-1 are connected in parallel to the same connecting pipe, and the closing ports of the first ball valve 5 and the second ball valve 5-1 are connected in parallel to another connecting pipe, so that the first ball valve 5 and the second ball valve 5-1 open or close synchronously.

[0068] Two lever-roller pneumatic control valves are located on both sides of the double-rod non-rotating cylinder 9. The two piston rods of the double-rod non-rotating cylinder 9 can touch the rollers of the two lever-roller pneumatic control valves, applying external force to the rollers to change the opening and closing state of the lever-roller pneumatic control valves. This causes the lever-roller pneumatic control valves to open, allowing the pressurized gas from the air filter assembly 4 to enter the control ports at both ends of the two-position five-way pneumatic valve 3 through the lever-roller pneumatic control valves. This switches the valve rod position of the two-position five-way pneumatic valve 3, changing the outlet state of the two-position five-way pneumatic valve 3. When the piston rod moves away from the two lever-roller pneumatic control valves, the lever-roller pneumatic control valves return to the closed state.

[0069] One-way throttle valves are respectively installed on the connecting pipes of the two-position five-way pneumatic valve 3 and the double-outlet non-rotating cylinder 9 to control the flow rate of pressurized gas from the two-position five-way pneumatic valve to the double-outlet non-rotating cylinder. Gas can also flow from the double-outlet non-rotating cylinder 9 to the two-position five-way pneumatic valve 3, but the flow rate is not controlled. The spraying time or intermittent time can be changed by adjusting the flow rate of the one-way throttle valve.

[0070] The opening ports of the first ball valve 5 and the second ball valve 5-1 are connected to the same connecting pipe at the same parallel connection point, and the closing ports of the first ball valve 5 and the second ball valve 5-1 are connected to another connecting pipe at the same parallel connection point, which better ensures the synchronization of gas and water supply.

[0071] The one-way throttle valve is positioned between the parallel connection point of the first ball valve 5 and the second ball valve 5-1 and the air port of the double-rod non-rotating cylinder 9. It controls the flow rate of the pressurized gas from the two-position five-way pneumatic valve 3 to the double-rod non-rotating cylinder 9, but does not control the flow rate from the two-position five-way pneumatic valve 3 to the first ball valve 5 and the second ball valve 5-1, thus ensuring the timeliness of spraying on and off while also ensuring the intermittency of spraying.

[0072] Below the lever-roller type pneumatic control valve is an adjusting platform. The adjusting platform has a screw and a slider, which are threaded together. An adjusting wheel is mounted on the screw; rotating the adjusting wheel moves the slider along the screw axis. A pointer is located at the bottom of the slider, and a scale is located below the adjusting platform. The pointer and scale correspond, and the slider's position is confirmed by the scale. The lever-roller type pneumatic control valve is fixed to the slider on the adjusting platform, forming a mechanical control valve device. Rotating the adjusting wheel drives the lever-roller type pneumatic control valve to move synchronously. By adjusting the position of the adjusting platform, the distance between the piston rod of the double-rod non-rotating cylinder and the lever-roller type pneumatic control valve is adjusted, changing the piston rod's movement time and thus altering the spray time or intermittent time.

[0073] It also includes two shuttle valves and two manual two-position three-way valves. The air inlets of the two manual two-position three-way valves are connected to the outlet of the air filter assembly 4. The two air inlets of the shuttle valves are respectively connected to the air outlet of the manual two-position three-way valve and the air outlet of the lever roller pneumatic control valve. The air outlets of the two shuttle valves are respectively connected to the control ports at both ends of the two-position five-way pneumatic valve. The setting of the shuttle valves and the manual two-position three-way valves can realize the temporary stopping and starting of spraying, preventing personnel from getting their clothes wet, and also allowing timely spraying when dust removal is needed, thus improving the flexibility of the spraying device.

[0074] Specifically, the two outlets of the two-position five-way pneumatic valve 3 are the first outlet 31 and the second outlet 32. The left outlet is set as the first outlet 31 and the right outlet is set as the second outlet 32. The port on the two-position five-way pneumatic valve 3 that is on the same side as the first outlet 31 is the first control port 33, and the port on the same side as the second outlet 32 ​​is the second control port 34.

[0075] Of the two air ports of the double-outlet non-rotating cylinder 9, the one corresponding to the first air outlet 31 is the first air port 93, and the one corresponding to the second air outlet 32 ​​is the second air port 94. The piston rod on the same side as the first air port 93 is the first piston rod 91, and the piston rod on the same side as the second air port 94 is the second piston rod 92. The lever-roller type pneumatic control valve corresponding to the first piston rod 91 is the first lever-roller type pneumatic control valve 7, and the lever-roller type pneumatic control valve corresponding to the second piston rod 92 is the second lever-roller type pneumatic control valve 7-1.

[0076] The regulating platform corresponding to the first lever roller pneumatic control valve 7 is the first regulating platform 6.

[0077] The regulating platform corresponding to the second lever roller pneumatic control valve 7-1 is the second regulating platform 6-1.

[0078] The connecting pipe between the first air outlet 31 and the first air port 93 is the first connecting pipe, and the connecting pipe between the second air outlet 32 ​​and the second air port 94 is the second connecting pipe.

[0079] The opening ports of the first ball valve 5 and the second ball valve 5-1 are connected in parallel to the first connecting pipe, and the closing ports of the first ball valve 5 and the second ball valve 5-1 are connected in parallel to the second connecting pipe.

[0080] The one-way throttle valve on the first connecting pipe is designated as the first one-way throttle valve 8, and the one-way throttle valve on the second connecting pipe is designated as the second one-way throttle valve 8-1.

[0081] The shuttle valve connected to the air outlet of the first lever roller pneumatic control valve 7 is the first shuttle valve 1, and the manual two-position three-way valve connected to the air outlet of the first shuttle valve 1 is the first manual two-position three-way valve 2; the shuttle valve connected to the air outlet of the second lever roller pneumatic control valve 7-1 is the second shuttle valve 1-1, and the manual two-position three-way valve connected to the air outlet of the second shuttle valve 1-1 is the second manual two-position three-way valve 2-1.

[0082] Assuming the initial state, the valve stem of the two-position five-way pneumatic valve 3 is on the right, the first outlet 31 of the two-position five-way pneumatic valve 3 is in the connected state, and the second outlet 32 ​​is closed. That is, the pressurized gas from the air filter assembly 4 enters the two-position five-way pneumatic valve 3, passes through the first outlet 31 of the two-position five-way pneumatic valve 3, the first one-way throttle valve 8 on the first connecting pipe, and the first air port 93, and enters the double-rod non-rotating cylinder 9, causing the second piston rod 92 of the double-rod non-rotating cylinder 9 to move to the right. At the same time, the pressurized gas enters the opening ports of the first ball valve 5 and the second ball valve 5-1, opening the first ball valve 5 and the second ball valve 5-1, and starting the spray dust removal. Figure 2 As shown.

[0083] During the rightward movement of the second piston rod 92, the gas on the right side of the double-outlet non-rotating cylinder 9 flows out from the second air port 94 and mixes with the gas flowing out from the closed ports of the first ball valve 5 and the second ball valve 5-1, and is discharged through the exhaust ports of the second one-way throttle valve 8-1 and the two-position five-way pneumatic valve 3.

[0084] The second piston rod 92 moves to the right until it touches the second lever roller type pneumatic control valve 7-1, opening the second lever roller type pneumatic control valve 7-1. This allows pressurized air to enter the second control port 34 of the two-position five-way pneumatic valve 3 through the second lever roller type pneumatic control valve 7-1 and the second shuttle valve 1-1, changing the valve stem position of the two-position five-way pneumatic valve 3 and pushing the valve stem of the two-position five-way pneumatic valve 3 to the left. This causes the first air outlet 31 of the two-position five-way pneumatic valve 3 to close, and the second air outlet 32 ​​to open. Figure 3 As shown, the pressurized gas enters the right side of the double-rod non-rotating cylinder 9 through the second outlet 32, the second one-way throttle valve 8-1 on the second connecting pipe, and the second air port 94, pushing the first piston rod 91 to the left. At the same time, the pressurized gas enters the closing ports of the first ball valve 5 and the second ball valve 5-1, causing the first ball valve 5 and the second ball valve 5-1 to close and stop spraying.

[0085] During the leftward movement of the first piston rod 91, the gas on the left side of the double-outlet non-rotating cylinder 9 flows out from the first air port 93 and mixes with the gas flowing out from the opening ports of the first ball valve 5 and the second ball valve 5-1, and is discharged through the exhaust ports of the first one-way throttle valve 8 and the two-position five-way pneumatic valve 3.

[0086] The first piston rod 91 continues to move to the left until it touches the first lever roller type pneumatic control valve 7, opening the first lever roller type pneumatic control valve 7. Pressurized gas enters the first control port 33 of the two-position five-way pneumatic valve 3 through the first lever roller type pneumatic control valve 7 and the first shuttle valve 1, changing the valve stem position of the two-position five-way pneumatic valve 3. This pushes the valve stem of the two-position five-way pneumatic valve 3 to the right, causing the second outlet 32 ​​of the two-position five-way pneumatic valve 3 to close and the first outlet 31 to open. Figure 2 As shown, pressurized gas enters the left side of the double-rod non-rotating cylinder 9 through the first outlet 31, the first one-way throttle valve 8 on the first connecting pipe, and the first air port 93. This causes the second piston rod 92 of the double-rod non-rotating cylinder 9 to move to the right. Simultaneously, the pressurized gas enters the opening ports of the first ball valve 5 and the second ball valve 5-1, causing the first ball valve 5 and the second ball valve 5-1 to open and resume spraying. During the rightward movement of the second piston rod 92, the gas on the right side of the double-rod non-rotating cylinder 9 flows out from the second air port 94, mixes with the gas flowing out from the closed ports of the first ball valve 5 and the second ball valve 5-1, and is discharged through the exhaust ports of the second one-way throttle valve 8-1 and the two-position five-way pneumatic valve 3. Thus, intermittent spraying is repeated.

[0087] During intermittent spraying, press the second manual two-position three-way valve 2-1 to open it, and simultaneously cause the second shuttle valve 1-1 to open. This allows pressurized gas to enter the second control port 34 of the two-position five-way pneumatic valve 3 via the second manual two-position three-way valve 2-1 and the second shuttle valve 1-1. This changes or maintains the valve stem position of the two-position five-way pneumatic valve 3, so that the valve stem is on the left side, i.e., the second outlet 32 ​​is open and the first outlet 31 is closed. The pressurized gas enters the right side of the double-rod non-rotating cylinder 9 via the second outlet 32, the second one-way throttle valve 8-1 on the second connecting pipe, and the second air port 94, pushing the first piston rod 91 to the left. At the same time, the pressurized gas enters the closing ports of the first ball valve 5 and the second ball valve 5-1, causing the first ball valve 5 and the second ball valve 5-1 to close, temporarily stopping the spraying. Then, the intermittent spraying will automatically resume.

[0088] During intermittent spraying, press the first manual two-position three-way valve 2 to open it, and simultaneously cause the first shuttle valve 1 to open. This allows pressurized gas to enter the first control port 33 of the two-position five-way pneumatic valve 3 through the first manual two-position three-way valve 2 and the first shuttle valve 1. This changes or maintains the valve stem position of the two-position five-way pneumatic valve 3, so that the valve stem is on the right side, i.e., the first air outlet 31 is open and the second air outlet 32 ​​is closed. The pressurized gas enters the left side of the double-rod non-rotating cylinder 9 through the first air outlet 31, the first one-way throttle valve 8 on the first connecting pipe, and the first air port 93, pushing the first piston rod 91 to the right. At the same time, the pressurized gas enters the opening ports of the first ball valve 5 and the second ball valve 5-1, causing the first ball valve 5 and the second ball valve 5-1 to open, resuming spraying. Subsequently, intermittent spraying will automatically resume.

[0089] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An intermittent spray control device, comprising an air filter assembly, a two-position five-way pneumatic valve, a first ball valve for controlling water supply, and a second ball valve for controlling air supply, wherein the outlet of the air filter assembly is connected to the air inlet of the two-position five-way pneumatic valve, characterized in that: It also includes a double-rod non-rotating cylinder and two lever-roller pneumatic control valves. The outlet of the air filter assembly is connected to the air inlet of the two lever-roller pneumatic control valves, and the air outlet of the two lever-roller pneumatic control valves is connected to the control ports at both ends of a two-position five-way pneumatic valve. The two air outlets of the two-position five-way pneumatic valve are connected to the two air ports of the double-rod non-rotating cylinder through connecting pipes. The first ball valve and the second ball valve are double-acting stainless steel pneumatic ball valves with an opening port and a closing port. The opening ports of the first ball valve and the second ball valve are connected in parallel to the same connecting pipe, and the closing ports of the first ball valve and the second ball valve are connected in parallel to another connecting pipe. The two lever-roller pneumatic control valves are located on both sides of the double-rod non-rotating cylinder. The two piston rods of the double-rod non-rotating cylinder can touch the rollers of the two lever-roller pneumatic control valves to change the opening and closing state of the lever-roller pneumatic control valves, thereby switching the valve stem position of the two-position five-way pneumatic valve.

2. The intermittent spray control device according to claim 1, characterized in that: One-way throttle valves are respectively installed on the connecting pipes of the two-position five-way pneumatic valve and the double-rod non-rotating cylinder to control the flow rate of the pressurized gas flowing from the two-position five-way pneumatic valve to the double-rod non-rotating cylinder.

3. The intermittent spray control device according to claim 1, characterized in that: The opening ports of the first ball valve and the second ball valve are connected to the same connecting pipe at the same parallel connection point, and the closing ports of the first ball valve and the second ball valve are connected to another connecting pipe at the same parallel connection point.

4. The intermittent spray control device according to claim 1, characterized in that: The lever-roller type pneumatic control valve is provided with an adjustment platform below it. The adjustment platform is provided with a screw and a slider, which are threadedly connected. An adjustment wheel is provided on the screw. Rotating the adjustment wheel can move the slider along the screw axis. A pointer is provided at the bottom of the slider. A scale is provided below the adjustment platform, and the pointer and the scale correspond to each other. The lever-roller type pneumatic control valve is fixed on the slider of the adjustment platform to form a control valve device.

5. The intermittent spray control device according to claim 1, characterized in that: It also includes two shuttle valves and two manual two-position three-way valves. The air inlets of the two manual two-position three-way valves are connected to the outlet of the air filter assembly. The two air inlets of the shuttle valves are respectively connected to the air outlet of the manual two-position three-way valve and the air outlet of the lever roller pneumatic control valve. The air outlets of the two shuttle valves are respectively connected to the control ports at both ends of the two-position five-way pneumatic valve.

6. The intermittent spray control device according to claim 2, characterized in that: The one-way throttle valve is positioned between the parallel connection point of the first ball valve and the second ball valve and the air port of the double-rod non-rotating cylinder.

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