Dust suppression device for reducing raw material lump coal dust

Abstract

The utility model discloses a dust suppression device for reducing raw material lump coal dust, and belongs to the technical field of raw material coal workshop dust suppression, each tail end spraying unit comprises a spraying controller and a spraying box, the input end of the spraying box is connected with the output end of the corresponding spraying controller, at least one spraying box is located above a hopper of a coal raw material workshop, and the tail end of the spraying box is connected with the corresponding spraying controller. At least one spraying box is positioned in a discharging area of the coal raw material workshop; a grab bucket sensor is arranged above the hopper, a vehicle sensor is arranged in the discharging area, and the output end of the grab bucket sensor and the output end of the vehicle sensor are connected with the input end of the control host. According to the technical scheme, dust generation reasons of the coal raw material workshop are analyzed, the spraying boxes are arranged in the areas where dust is prone to being generated, the sensors are used for sensing, and when a vehicle is sensed in the discharging area or a traveling crane grab bucket is sensed above a hopper, the corresponding spraying boxes are started to spray mist to the area, so that dust generation is reduced from the source.

Description

Technical Field

[0001] The utility model relates to the technical field of dust suppression in the raw coal workshop, and more specifically, to a dust suppression device for reducing the dust of raw lump coal. Background Art

[0002] In the process of synthetic ammonia production, the process in the coal raw material workshop is that the coal transport vehicle enters the coal raw material workshop, unloads the coal in the coal raw material workshop, and then exits the coal raw material workshop; the coal raw material workshop is equipped with a traveling grab controlled by a gantry crane. After the traveling grab grabs the coal raw material, it is put into the chute from above the hopper, and then enters the gas-making process through screening and crushing, dense medium washing, concentration, and pressure filtration by a belt conveyor. In the coal raw material workshop, the dust is relatively large and the environment is poor. How to reduce the internal dust and improve the workshop environment directly affects the safety and health of the workshop workers.

[0003] In view of this, the inventor of the present utility model has conducted in-depth research on this need, and thus this case has been produced. Summary of the Utility Model

[0004] Aiming at the problems in the existing coal raw material workshop, such as relatively large dust and poor environment, which directly affect the safety and health of the workshop workers, the utility model provides a dust suppression device for reducing the dust of raw lump coal. By analyzing the causes of dust generation in the coal raw material workshop, and then adopting dry fog dust suppression to suppress the dust generation sources in the coal raw material workshop, the dust content in the coal raw material workshop is effectively reduced, and the working environment is improved. The specific technical solutions are as follows:

[0005] A dust suppression device for reducing the dust of raw lump coal includes a control host, a gas storage tank, a water storage tank, a plurality of end spray units, and a water-gas distributor for controlling the water-gas supply ratio in the gas storage tank and the water storage tank. The air inlet of each end spray unit is respectively connected to the air outlet of the gas storage tank, and the water inlet of each end spray unit is respectively connected to the water outlet of the water storage tank;

[0006] Each end spray unit includes a spray controller and a spray box. The input end of the spray box is connected to the output end of the corresponding spray controller, and at least one spray box is located above the hopper in the coal raw material workshop, and at least one spray box is located in the unloading area of the coal raw material workshop;

[0007] A grab sensor is also arranged above the hopper in the coal raw material workshop, and a vehicle sensor is arranged in the unloading area of the coal raw material workshop. The output ends of the grab sensor and the vehicle sensor are respectively connected to the input end of the control host, and the output end of the control host is connected to the input ends of the water-gas distributor and the spray controller.

[0008] After analyzing the causes of dust generation in the coal raw material workshop, it is found that during the process of materials entering the belt conveyor through the hopper, disturbing airflows are generated inside the hopper, thus raising dust; during the falling process of the materials, collisions occur between the material particles and between the materials and the hopper, exacerbating dust generation. Moreover, when the coal-carrying vehicle unloads coal, dust will also be raised when the coal is unloaded from the vehicle. These two operation processes are the main factors for dust generation in the coal raw material workshop. By analyzing the causes of dust generation in the coal raw material workshop, spray boxes are set in the areas where dust is easily generated during the operation process, and sensors are used for induction. When a vehicle is sensed in the unloading area or a traveling grab is sensed above the hopper, the corresponding spray box is activated to spray the area, thereby reducing dust generation from the source.

[0009] Preferably, an air outlet pipe is provided at the air outlet of the air storage tank, a water outlet pipe is provided at the water outlet of the water storage tank, an air outlet solenoid valve is provided on the air outlet pipe, a water outlet solenoid valve is provided on the water outlet pipe, and the output end of the water-air distributor is connected to the input ends of the air outlet solenoid valve and the water outlet solenoid valve;

[0010] The air inlet of the end spray unit is connected to the side of the air outlet solenoid valve on the air outlet pipe away from the air storage tank, and the water inlet of the end spray unit is connected to the side of the water outlet solenoid valve on the water outlet pipe away from the water storage tank.

[0011] The water-air distributor is used to adjust the air outlet solenoid valve and the water outlet solenoid valve, and the flow rate of water and the flow rate of air are used to control the mixing ratio of water and air in the spray box to meet the purpose of suppressing dust.

[0012] Preferably, an air source filter is provided at a position close to the air outlet of the air outlet pipe of the air storage tank, and the air inlet of the air storage tank is connected to an air compressor.

[0013] Preferably, a pressure gauge and a pressure regulating valve are provided on the air outlet pipe, a water pressure gauge and a water pressure regulating valve are provided on the water outlet pipe, the output ends of the pressure gauge and the water pressure gauge are connected to the input end of the water-air distributor, and the input ends of the pressure regulating valve and the water pressure regulating valve are connected to the input end of the water-air distributor. The water pressure and air pressure on the water outlet pipe and the air outlet pipe are respectively controlled by the water pressure regulating valve and the pressure regulating valve to avoid the influence of too high or too low pressure on the water-air mixing effect.

[0014] Preferably, an air outlet manual valve is provided on the air outlet pipe, and a water outlet manual valve is provided on the water outlet pipe, and manual adjustment can be performed through the air outlet manual valve and the water outlet manual valve.

[0015] Preferably, the overall shape of the coal raw material workshop is square, with an import gate on one side of its longer side, and an export gate is provided at the corresponding position on the side opposite to the import gate. The hopper is arranged at the position of the export gate; and a gantry crane is installed on the top of the coal raw material workshop, and a traveling grab is installed on the gantry crane.

[0016] On the side walls corresponding to the two longer sides of the coal raw material workshop, a number of spray boxes are arranged, including a first spray box body for spraying above the hopper of the coal raw material workshop, a second spray box body for spraying the unloading area of the coal raw material workshop, and a third spray box body located in the coal stacking area.

[0017] A number of dust concentration sensors are arranged in the coal stacking area of the coal raw material workshop, and the output end of the dust concentration sensor is connected to the input end of the control host.

[0018] A dust concentration sensor is set. When it is detected that the dust concentration in the coal stacking area is higher than the set value, all the spray box bodies or the third spray box body are started to control the dust concentration until the dust concentration reaches the normal range.

[0019] Preferably, a number of humidity sensors and a number of temperature sensors are arranged in the coal stacking area of the coal raw material workshop, and the output ends of the humidity sensor and the temperature sensor are connected to the input end of the control host. Since the dust particles in the air are usually less than 15μm, but have a certain size range, when the water mist particles are similar in size to the dust particles, the adsorption, filtration, and condensation probabilities are the greatest. If the reduction of the dust concentration by spraying is not obvious, it may be that the size of the water mist particles generated by spraying is quite different from that of the dust particles. At this time, it can be detected by the humidity sensor. When the humidity exceeds the set value and the dust concentration is still higher than the set value, it is necessary to control the water-air distributor to adjust the water-air distribution ratio and control the spray pressure to make the water mist particles close to the dust particles.

[0020] In addition, a large amount of coal raw materials are stacked in the coal raw material workshop, and coal dust particles are suspended in the air. When the environment reaches a certain temperature, potential safety hazards may occur. Therefore, the temperature sensor is used to detect the temperature of the coal stacking area. When the temperature, humidity, and dust concentration reach a certain value, the spray box body is started. An alarm device can also be set in the coal raw material workshop to give an alarm at the same time.

[0021] Preferably, a number of universal joint assemblies are installed along the length direction of the spray box. The universal joint assembly includes a universal joint kit and a dry fog nozzle, and the dry fog nozzle is installed in the spray box through the universal joint kit.

[0022] The output end of the water-air distributor is connected to the input end of the universal joint assembly.

[0023] Preferably, it further includes a distribution box, which is electrically connected to the control host, the water and gas distributor, and the spray controller to supply power to the control host, the water and gas distributor, and the spray controller.

[0024] Beneficial effects:

[0025] The beneficial effects of adopting the technical solution of the present utility model are as follows:

[0026] (1) Analyze the causes of dust generation in the coal raw material workshop. Set up spray boxes in areas where dust is likely to be generated during operation, and use sensors to sense. When a vehicle is detected in the unloading area or a traveling grab bucket is detected above the hopper, start the corresponding spray box to spray the area, thereby reducing dust generation from the source.

[0027] (2) Set up dust concentration sensors. When the dust concentration in the coal stacking area is detected to be higher than the set value, start all spray boxes or the third spray box to control the dust concentration until the dust concentration reaches the normal range.

[0028] (3) Use the water and gas distributor to adjust the air outlet solenoid valve and the water outlet solenoid valve, and use the water flow rate and air flow rate to control the mixing ratio of water and gas in the spray box to meet the purpose of suppressing dust. Description of the drawings

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0030] Figure 1 is the overall layout schematic diagram of the coal raw material workshop of the present utility model;

[0031] Figure 2 is the water, gas and electricity connection route diagram of the dust suppression device of the present utility model;

[0032] Figure 3 is the control flow block diagram of the dust suppression device of the present utility model. Specific embodiments

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] As Figures 1-3 shown, a dust suppression device for reducing the dust of raw lump coal includes a control host 1, an air storage tank 2, a water storage tank 3, a plurality of terminal spray units 4, and a water-gas distributor 5 for controlling the water-gas supply ratio in the air storage tank 2 and the water storage tank 3. The air inlet of each terminal spray unit 4 is respectively connected to the air outlet of the air storage tank 2, and the water inlet of each terminal spray unit 4 is respectively connected to the water outlet of the water storage tank 3;

[0035] Each terminal spray unit 4 includes a spray controller 41 and a spray box 42. The input end of the spray box 42 is connected to the output end of the corresponding spray controller 41, and at least one spray box 42 is located above the hopper 101 in the coal raw material workshop 100, and at least one spray box 42 is located in the unloading area 102 of the coal raw material workshop 100;

[0036] A grab sensor 103 is further provided above the hopper 101 in the coal raw material workshop 100, and a vehicle sensor 104 is provided in the unloading area 102 of the coal raw material workshop. The output ends of the grab sensor 103 and the vehicle sensor 104 are respectively connected to the input end of the control host 1, and the output end of the control host 1 is connected to the input ends of the water-gas distributor 5 and the spray controller 41. By analyzing the causes of dust generation in the coal raw material workshop, spray boxes are set in areas where dust is easily generated during the operation process, and sensors are used for induction. When a vehicle is sensed in the unloading area or a hoisting grab is sensed above the hopper, the corresponding spray box is started to spray the area, thereby reducing the generation of dust from the source.

[0037] As a preferred embodiment, an air outlet pipe 21 is provided at the air outlet of the air storage tank 2, a water outlet pipe 31 is provided at the water outlet of the water storage tank 3, an air outlet solenoid valve 22 is provided on the air outlet pipe 21, a water outlet solenoid valve 32 is provided on the water outlet pipe 31, and the output end of the water-gas distributor 5 is connected to the input ends of the air outlet solenoid valve 22 and the water outlet solenoid valve 32;

[0038] The air inlet of the end spray unit 4 is connected to the side of the air outlet solenoid valve 32 on the air outlet pipe 21 away from the gas storage tank 3, and the water inlet of the end spray unit 4 is connected to the side of the water outlet solenoid valve 32 on the water outlet pipe 31 away from the water storage tank 3. The air outlet solenoid valve and the water outlet solenoid valve are adjusted by using a water-air distributor, and the mixing ratio of water and air in the spray box is controlled by using the water flow rate and the air flow rate to meet the purpose of suppressing dust.

[0039] As a preferred embodiment, an air source filter 33 is provided at a position close to the air outlet of the air outlet pipe 31 of the gas storage tank 3, and the air inlet of the gas storage tank 3 is connected to an air compressor 34.

[0040] As a preferred embodiment, a pressure gauge 23 and a pressure regulating valve 24 are provided on the air outlet pipe 21, and a water pressure gauge 35 and a water pressure regulating valve 36 are provided on the water outlet pipe 31. The output ends of the pressure gauge 23 and the water pressure gauge 35 are connected to the input end of the water-air distributor 5, and the input ends of the pressure regulating valve 22 and the water pressure regulating valve 36 are connected to the output end of the water-air distributor 5. The water pressure and the air pressure on the water outlet pipe and the air outlet pipe are respectively controlled by the water pressure regulating valve and the air pressure regulating valve to avoid affecting the water-air mixing effect due to excessive or too small pressure.

[0041] As a preferred embodiment, an air outlet manual valve 25 is provided on the air outlet pipe 21, and a water outlet manual valve (not shown in the figure) is provided on the water outlet pipe 31, and manual adjustment can be performed through the air outlet manual valve and the water outlet manual valve.

[0042] As a preferred embodiment, the coal raw material workshop 100 is square as a whole, and an import gate 105 is provided on one side of its longer side. An export gate 106 is provided at a corresponding position on the side opposite to the import gate 105, and a hopper is provided at the position of the export gate 106; and a gantry crane 107 is provided on the top of the coal raw material workshop 100, and a traveling grab 108 is installed on the gantry crane 107;

[0043] A number of spray boxes 42 are arranged on the side walls corresponding to the two longer sides of the coal raw material workshop 100, including a first spray box body 421 for spraying above the hopper 101 of the coal raw material workshop 100, a second spray box body 422 for spraying the unloading area 102 of the coal raw material workshop, and a third spray box body 423 located in the coal stacking area;

[0044] In the coal stockpiling area of the coal raw material workshop 100, a number of dust concentration sensors 108 are provided, and the output end of the dust concentration sensor 108 is connected to the input end of the control host 1. By setting the dust concentration sensors, when the dust concentration in the coal stockpiling area is detected to be higher than the set value, all spray boxes or the third spray box are started to control the dust concentration until the dust concentration reaches the normal range.

[0045] As a preferred implementation manner, a number of humidity sensors 109 and a number of temperature sensors 110 are provided in the coal stockpiling area of the coal raw material workshop 100, and the output ends of the humidity sensor 109 and the temperature sensor 110 are connected to the input end of the control host 1. Since the dust particles in the air are usually less than 15 μm, but have a certain size range, when the water mist particles are similar in size to the dust particles, the adsorption, filtration, and condensation probabilities are the greatest. If the reduction of the dust concentration by spraying is not obvious, it may be that the size of the water mist particles generated by spraying is quite different from that of the dust particles. At this time, it can be detected by the humidity sensor. When the humidity exceeds the set value and the dust concentration is still higher than the set value, it is necessary to control the water-gas distributor to adjust the water-gas distribution ratio and control the spray pressure to make the water mist particles close to the dust particles.

[0046] In addition, a large amount of coal raw materials are piled up in the coal raw material workshop, and coal dust particles are suspended in the air. When the environment reaches a certain temperature, potential safety hazards may occur. Therefore, the temperature sensor is used to detect the temperature of the coal stockpiling area. When the temperature, humidity, and dust concentration reach a certain value, the spray box is started. An alarm device can also be set in the coal raw material workshop to give an alarm at the same time.

[0047] As a preferred implementation manner, a number of universal joint assemblies 424 are installed in the spray box 42 along its length direction. The universal joint assembly includes a universal joint kit (not shown in the figure) and a dry fog nozzle 425, and the dry fog nozzle 425 is installed in the spray box 42 through the universal joint kit;

[0048] The output end of the water-gas distributor 5 is connected to the input end of the universal joint assembly 424.

[0049] As a preferred implementation manner, it further includes a distribution box 6, and the distribution box 6 is electrically connected to the control host 1, the water-gas distributor 5, and the spray controller 41 through a control cable 61 to supply power to the control host, the water-gas distributor, and the spray controller.

[0050] Working principle: When the coal transport vehicle enters the coal unloading area to unload coal, or when the traveling crane grabs coal and puts it into the hopper, the vehicle sensor and the grab sensor sense the corresponding information, and start the corresponding spray box to spray the area, thereby reducing the generation of dust from the source.

[0051] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A dust suppression device for reducing raw lump coal dust, characterized in that, It includes a control host, an air storage tank, a water storage tank, several terminal spray units, and a water-gas distributor for controlling the water-gas supply ratio in the air storage tank and the water storage tank. The air inlet of each terminal spray unit is respectively connected to the air outlet of the air storage tank, and the water inlet of each terminal spray unit is respectively connected to the water outlet of the water storage tank; Each terminal spray unit includes a spray controller and a spray box. The input end of the spray box is connected to the output end of the corresponding spray controller, and at least one spray box is located above the hopper in the coal raw material workshop, and at least one spray box is located in the unloading area of the coal raw material workshop; A grab sensor is also arranged above the hopper in the coal raw material workshop, and a vehicle sensor is arranged in the unloading area of the coal raw material workshop. The output ends of the grab sensor and the vehicle sensor are respectively connected to the input end of the control host, and the output end of the control host is connected to the input ends of the water-gas distributor and the spray controller.

2. The dust suppression device for reducing raw lump coal dust according to claim 1, characterized in that, An air outlet pipe is arranged at the air outlet of the air storage tank, and a water outlet pipe is arranged at the water outlet of the water storage tank. An air outlet solenoid valve is arranged on the air outlet pipe, and a water outlet solenoid valve is arranged on the water outlet pipe. The output end of the water-gas distributor is connected to the input ends of the air outlet solenoid valve and the water outlet solenoid valve; The air inlet of the terminal spray unit is connected to the side of the air outlet solenoid valve on the air outlet pipe away from the air storage tank, and the water inlet of the terminal spray unit is connected to the side of the water outlet solenoid valve on the water outlet pipe away from the water storage tank.

3. The dust suppression device for reducing raw lump coal dust according to claim 2, characterized in that, An air source filter is arranged at the position of the air outlet pipe of the air storage tank close to the air outlet, and the air inlet of the air storage tank is connected to an air compressor.

4. The dust suppression device for reducing raw lump coal dust according to claim 2, characterized in that A pressure gauge and a pressure regulating valve are arranged on the air outlet pipe, and a water pressure gauge and a water pressure regulating valve are arranged on the water outlet pipe. The output ends of the pressure gauge and the water pressure gauge are connected to the input end of the water-gas distributor, and the input ends of the pressure regulating valve and the water pressure regulating valve are connected to the input end of the water-gas distributor.

5. The dust suppression device for reducing raw lump coal dust according to claim 2, characterized in that, An air outlet manual valve is arranged on the air outlet pipe, and a water outlet manual valve is arranged on the water outlet pipe.

6. The dust suppression device for reducing raw lump coal dust according to claim 1, characterized in that, The coal raw material workshop is square as a whole, and one side of its longer side is an inlet gate. An outlet gate is arranged at the corresponding position on the side opposite to the inlet gate, and the hopper is arranged at the position of the outlet gate; and a gantry crane is arranged on the top of the coal raw material workshop, and a traveling grab is installed on the gantry crane; A number of spray boxes are arranged on the side walls corresponding to the two longer sides of the coal raw material workshop, including a first spray box body for spraying above the hopper in the coal raw material workshop, a second spray box body for spraying in the unloading area of the coal raw material workshop, and a third spray box body located in the coal stacking area; A number of dust concentration sensors are arranged in the coal stacking area of the coal raw material workshop, and the output ends of the dust concentration sensors are connected to the input end of the control host.

7. The dust suppression device for reducing raw lump coal dust according to claim 6, characterized in that, A number of humidity sensors and a number of temperature sensors are arranged in the coal stacking area of the coal raw material workshop, and the output ends of the humidity sensors and the temperature sensors are connected to the input end of the control host.

8. The dust suppression device for reducing raw lump coal dust according to claim 1, characterized in that, A number of universal joint assemblies are installed along the length direction inside the spray box. The universal joint assembly includes a universal joint kit and a dry fog nozzle, and the dry fog nozzle is installed inside the spray box through the universal joint kit; The output end of the water-gas distributor is connected to the input end of the universal joint assembly.

9. The dust suppression device for reducing raw lump coal dust according to claim 1, wherein It further includes a distribution box, and the distribution box is electrically connected to the control host, the water-gas distributor, and the spray controller.

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