Water adding equipment for underground spray water tank

Abstract

The utility model relates to water adding equipment for an underground spray water tank, which comprises a water tank, a water inlet mechanism communicated with the water tank and comprising a water inlet valve configured to control the on-off of the water inlet mechanism, a liquid level monitoring mechanism arranged in the water tank and used for monitoring the water level in the water tank, and a controller arranged in the water tank and used for controlling the on-off of the water inlet valve. The water inlet valve is electrically connected with the controller through a first circuit, a normally-open relay is arranged on the first circuit, and the liquid level monitoring mechanism is electrically connected with the normally-open relay and the controller. The liquid level monitoring mechanism is configured to conduct the normally open relay to open the water inlet valve to supplement water to the water tank when monitoring that the water level in the water tank is a low level. Therefore, the normally open relay is arranged on the first circuit between the controller and the water inlet valve, so that the water inlet valve can be conveniently controlled to be opened and closed to accurately supplement water to the water tank, and the dust removal efficiency is improved.

Description

Technical Field

[0001] This disclosure relates to the technical field of water supply equipment for spray water tanks in underground coal mine working faces, specifically, to a water supply device for underground spray water tanks. Background Technology

[0002] During mining operations, coal mines generate a large amount of dust. Existing dust removal devices mostly use wet dust removal, which involves atomizing water in a water tank and spraying it into the roadway to mix the airborne dust particles with the water mist and bring them to the ground. However, when filling the water tank, the water supply valve may not accurately control the flow rate, resulting in the water level in the tank being too low or too high, thus affecting the dust removal efficiency. Utility Model Content

[0003] The purpose of this disclosure is to provide a water filling device for a downhole spray water tank, which can accurately fill the tank with water to keep the water level within a preset range, thereby at least partially solving the problems in the related art.

[0004] To achieve the above objectives, this disclosure provides a water filling device for a downhole spray water tank, comprising: a water tank, a water inlet mechanism connected to the water tank including a water inlet valve configured to control the on / off state of the water inlet mechanism, a liquid level monitoring mechanism disposed within the water tank for monitoring the water level in the water tank, and a controller. The water inlet valve is electrically connected to the controller via a first circuit, the first circuit being provided with a normally open relay. The liquid level monitoring mechanism is electrically connected to both the normally open relay and the controller. The liquid level monitoring mechanism is configured to activate the normally open relay to open the water inlet valve to replenish water to the water tank when the monitored water level in the water tank is low.

[0005] Optionally, the liquid level monitoring mechanism includes at least two liquid level sensors, which are connected in parallel and electrically connected to the controller respectively.

[0006] Optionally, the liquid level monitoring mechanism includes two liquid level sensors, one of which is a pressure liquid level sensor and the other is a float liquid level sensor.

[0007] Optionally, there are two normally open relays, which are electrically connected to the pressure level sensor and the float level sensor, respectively, and the two normally open relays are connected in series in the first circuit.

[0008] Optionally, the number of liquid level sensors is three, of which two are pressure liquid level sensors and one is a float liquid level sensor.

[0009] Optionally, the water inlet mechanism includes a first water inlet pipe communicating with the side wall of the water tank, and the water inlet valve includes a first water inlet valve disposed on the first water inlet pipe.

[0010] Optionally, the water inlet mechanism further includes a second water inlet pipe communicating with the top wall of the water tank, and the water inlet valve further includes a second water inlet valve disposed on the second water inlet pipe.

[0011] Optionally, a spray pump is provided on the top of the water tank. The spray pump is electrically connected to the controller. The inlet of the spray pump is provided with a water inlet pipe extending to the bottom of the water tank. The outlet of the spray pump is provided with a spray pipe, and the spray pipe is provided with multiple nozzles.

[0012] Optionally, an observation window is provided on the side wall of the water tank.

[0013] Optionally, the bottom of the water tank is provided with a drain pipe communicating with the water tank, and a drain valve is provided on the drain pipe, which is electrically connected to the controller.

[0014] The above technical solution involves installing a normally open relay in the first circuit connecting the inlet valve and the controller. This normally open relay is electrically connected to a liquid level monitoring mechanism. When the water level in the tank is low, the low-level signal from the liquid level monitoring mechanism is triggered, causing the normally open relay to conduct. This connects the controller and the inlet valve, allowing the controller to open the inlet valve to replenish the water tank. When the water level in the tank is high, the high-level signal from the liquid level monitoring mechanism is triggered, causing the normally open relay to disconnect and closing the inlet valve. Thus, by installing a normally open relay in the first circuit between the controller and the inlet valve, the opening and closing of the inlet valve can be conveniently controlled for precise water replenishment to the tank, improving dust removal efficiency.

[0015] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of a water filling device for a downhole spray water tank provided in an exemplary embodiment of this disclosure.

[0018] Explanation of reference numerals in the attached figures

[0019] 1-Water tank; 2-Water inlet mechanism; 21-Water inlet valve; 211-First water inlet valve; 212-Second water inlet valve; 22-First water inlet pipe; 23-Second water inlet pipe; 3-Liquid level monitoring mechanism; 31-Pressure level sensor; 32-Float level sensor; 4-Controller; 5-Normally open relay; 6-Spray pump; 61-Water inlet pipe; 62-Spray pipe; 7-Observation window; 8-Drain pipe; 81-Drain valve. Detailed Implementation

[0020] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0021] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" refer to the outline of the component itself. Furthermore, it should be noted that terms such as "first" and "second" are used to distinguish one element from another and do not indicate sequence or importance. Additionally, in the description with reference to the accompanying drawings, the same reference numerals in different drawings denote the same element.

[0022] In related technologies, a large amount of dust is generated during mining operations in underground coal mines. Existing dust removal devices mostly adopt wet dust removal, which involves atomizing water in a water tank and spraying it into the roadway to mix the airborne dust particles with the water mist and bring them to the ground. However, when filling the water tank, there is a problem that the water supply valve does not accurately control the flow rate, resulting in the water level in the tank being too low or too high, thus leading to low dust removal efficiency.

[0023] like Figure 1 As shown, to solve the above-mentioned technical problems, this disclosure provides a water filling device for a downhole spray water tank, including: a water tank 1, a water inlet mechanism 2, a liquid level monitoring mechanism 3, and a controller 4. The water inlet mechanism 2 is connected to the water tank 1 and includes a water inlet valve 21, which is configured to control the opening and closing of the water inlet mechanism 2. The liquid level monitoring mechanism 3 is located inside the water tank 1 and is used to monitor the water level inside the water tank 1. The water inlet valve 21 is electrically connected to the controller 4 through a first circuit. A normally open relay 5 is provided on the first circuit. The liquid level monitoring mechanism 3 is electrically connected to the normally open relay 5 and the controller 4 respectively. The liquid level monitoring mechanism 3 is configured to conduct the normally open relay 5 to open the water inlet valve 21 to replenish water to the water tank 1 when the water level in the monitored water tank 1 is low.

[0024] Through the above technical solution, a normally open relay 5 is installed on the first circuit connecting the inlet valve 21 and the controller 4. The normally open relay 5 is electrically connected to the liquid level monitoring mechanism 3. When the water level in the water tank 1 is low, the low-level signal of the liquid level monitoring mechanism 3 is triggered, causing the normally open relay 5 to conduct, connecting the controller 4 and the inlet valve 21. This allows the controller 4 to control the inlet valve 21 to open and replenish water to the water tank 1. When the water level in the water tank 1 is high, the high-level signal of the liquid level monitoring mechanism 3 is triggered, causing the normally open relay 5 to open, thus closing the inlet valve 21. Therefore, by installing a normally open relay 5 on the first circuit between the controller 4 and the inlet valve 21, the opening and closing of the inlet valve 21 can be conveniently controlled to precisely replenish water to the water tank 1, improving dust removal efficiency.

[0025] In some feasible methods, in order to improve the accuracy of water level measurement and accurately feed it back to the controller, the liquid level monitoring mechanism 3 includes at least two liquid level sensors. The two liquid level sensors are set in parallel and electrically connected to the controller 4 respectively. Thus, the actual water level in the water tank 1 can be calibrated by the two liquid level sensors. When both are satisfied, the controller 4 will start the water inlet valve 21, thereby further improving the accuracy of the water supply equipment.

[0026] Optionally, the liquid level monitoring mechanism 3 includes two liquid level sensors, one of which is a pressure liquid level sensor 31, and the other is a float liquid level sensor 32. There are two normally open relays 5, each electrically connected to both the pressure liquid level sensor 31 and the float liquid level sensor 32, and the two normally open relays 5 are connected in series in the first circuit. Therefore, when the pressure liquid level sensor 31 outputs a low-level signal, the normally open relay 5 corresponding to the pressure liquid level sensor 31 is activated; when the float liquid level sensor 32 outputs a low-level signal, the normally open relay 5 corresponding to the float liquid level sensor 32 is activated. This activates the controller 4 and the inlet valve 21, allowing the controller 4 to control the inlet valve 21 to open and replenish water to the water tank 1.

[0027] It should be noted that the controller 4 mentioned above may include a power supply and a PLC controller or a microcontroller.

[0028] In some feasible implementations, three level sensors can be used: two pressure level sensors 31 and one float level sensor 32. The two pressure level sensors 31 are spaced apart on the bottom wall of the water tank 1, while the float level sensor 32 is located inside the water tank 1. This allows the water level in the water tank 1 to be calibrated using the two pressure level sensors 31 and the float level sensor 32, enabling the controller 4 to accurately obtain the water level in the water tank 1 and selectively open the inlet valve 21 to fill the water tank 1. Of course, only one of the two pressure level sensors 31 can be used; one can be normally open while the other is normally closed. If the normally open pressure level sensor 31 fails, the other pressure level sensor 31 will be activated. It should be noted that the pressure level sensors 31 and the float level sensor 32 are conventional devices in the art and can be purchased independently.

[0029] In some feasible embodiments, the water inlet mechanism 2 includes a first water inlet pipe 22 communicating with the side wall of the water tank 1, and the water inlet valve 21 includes a first water inlet valve 211. The first water inlet valve 211 is disposed on the first water inlet pipe 22. The water inlet pipe can be a plastic pipe, and the end of the plastic pipe is connected to the water tank 1 through a connector. The first water inlet valve 211 is disposed on the plastic pipe. The first water inlet valve 211 can be a solenoid valve, such as a solenoid butterfly valve. The solenoid butterfly valve is electrically connected to the controller 4. The controller 4 can control the valve opening of the solenoid butterfly valve to control the water inlet volume, so as to meet the water supply requirements of various working conditions.

[0030] In addition, the water inlet mechanism 2 also includes a second water inlet pipe 23 connected to the top wall of the water tank 1, and the water inlet valve 21 also includes a second water inlet valve 212, which is disposed on the second water inlet pipe 23. The structure of the second water inlet pipe 23 can be the same as that of the first water inlet pipe 22. The first water inlet pipe 22 and the second water inlet pipe 23 can be used simultaneously to improve the water replenishment efficiency. Of course, the second water inlet pipe 23 and the first water inlet pipe 22 can also be used selectively. When one of the second water inlet pipe 23 and the first water inlet pipe 22 fails, the other can be started to continuously replenish the water tank 1.

[0031] In some feasible implementations, to facilitate the formation of water mist for dust removal at the working face of the coal mining machine, a spray pump 6 is installed at the top of the water tank 1. The spray pump 6 is electrically connected to the controller 4. The inlet of the spray pump 6 has a water inlet pipe 61 extending to the bottom of the water tank 1, and the outlet of the spray pump 6 has a water spray pipe 62 with multiple nozzles. Thus, when the coal mining machine starts working, the controller 4 can activate the spray pump 6, thereby atomizing the water in the water tank 1 through the water inlet pipe 61 (e.g., the spray pump 6) and spraying it out through the multiple nozzles in the water spray pipe 62, adsorbing the smoke and dust generated at the working face, and completing the dust suppression function. It is understood that there can be multiple water spray pipes 62, and multiple water spray pipes 62 can be set in parallel, with multiple nozzles on each water spray pipe 62, thereby increasing the dust removal efficiency by setting up multiple water spray pipes 62.

[0032] In order to facilitate the staff to inspect the water supply status of water tank 1, in some feasible ways, an observation window 7 is provided on the side wall of water tank 1. The observation window 7 can be a strip of transparent acrylic sheet. Thus, after the water supply equipment of water tank 1 has been running for a period of time, manual inspection is still required. At this time, the staff can observe the water supply status of water tank 1 through the observation window 7 to determine whether the water supply equipment is working properly.

[0033] In some feasible implementations, to facilitate the drainage of water from water tank 1, a drain pipe 8 communicating with water tank 1 is provided at the bottom of water tank 1. A drain valve 81 is provided on drain pipe 8, and drain valve 81 is electrically connected to controller 4. Thus, during prolonged use, the water in water tank 1 can be drained by opening drain valve 81. Of course, to facilitate drainage, the inner wall of water tank 1 has a profile that is lower in the middle and higher on both sides, thereby facilitating water accumulation in drain pipe 8 and drainage by opening drain valve 81. Drain valve 81 can be a solenoid valve, which can be electrically connected to controller 4 via wired or wireless means. Of course, to prevent water from flowing out of water tank 1 if drain valve 81 is damaged, a shut-off valve can also be installed on drain pipe 8 and upstream of drain valve 81.

[0034] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0035] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0036] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A water filling device for an underground spray water tank, characterized in that, include: Water tank, A water inlet mechanism, connected to the water tank, includes an inlet valve configured to control the on / off state of the water inlet mechanism. A liquid level monitoring mechanism, installed inside the water tank, is used to monitor the water level within the tank. The controller includes an inlet valve electrically connected to the controller via a first circuit. The first circuit is equipped with a normally open relay. The liquid level monitoring mechanism is electrically connected to both the normally open relay and the controller. The liquid level monitoring mechanism is configured to activate the normally open relay to open the inlet valve and replenish water to the water tank when the water level in the tank is low.

2. The water filling device for an underground spray water tank according to claim 1, characterized in that, The liquid level monitoring mechanism includes at least two liquid level sensors, which are connected in parallel and electrically connected to the controller respectively.

3. The water filling device for an underground spray water tank according to claim 2, characterized in that, The liquid level monitoring mechanism includes two liquid level sensors, one of which is a pressure liquid level sensor and the other is a float liquid level sensor.

4. The water filling device for an underground spray water tank according to claim 3, characterized in that, There are two normally open relays, which are electrically connected to the pressure level sensor and the float level sensor respectively. The two normally open relays are connected in series in the first circuit.

5. The water filling device for an underground spray water tank according to claim 2, characterized in that, There are three liquid level sensors, two of which are pressure liquid level sensors and one is a float liquid level sensor.

6. The water supply device for a downhole spray water tank according to any one of claims 1-5, characterized in that, The water inlet mechanism includes a first water inlet pipe communicating with the side wall of the water tank, and the water inlet valve includes a first water inlet valve, which is disposed on the first water inlet pipe.

7. The water filling device for an underground spray water tank according to claim 6, characterized in that, The water inlet mechanism also includes a second water inlet pipe communicating with the top wall of the water tank, and the water inlet valve also includes a second water inlet valve, which is disposed on the second water inlet pipe.

8. The water filling device for an underground spray water tank according to claim 1, characterized in that, The top of the water tank is equipped with a spray pump, which is electrically connected to the controller. The inlet of the spray pump is equipped with a water inlet pipe extending to the bottom of the water tank, and the outlet of the spray pump is equipped with a spray pipe with multiple nozzles.

9. The water filling device for an underground spray water tank according to claim 1, characterized in that, The water tank has an observation window on its side wall.

10. The water filling device for an underground spray water tank according to claim 1, characterized in that, The bottom of the water tank is provided with a drain pipe that communicates with the water tank, and a drain valve is provided on the drain pipe. The drain valve is electrically connected to the controller.

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