Stacking position dust suppression spraying device for stacker-reclaimer

Abstract

The utility model discloses a stack position dust suppression spraying device for a stacker-reclaimer, which relates to the technical field of stack position dust suppression spraying and comprises a medicament tank, an inlet of the medicament tank is respectively connected with a water tank and a dust suppressant tank through a feeding pipeline, a rough filtration device is arranged at an inlet of the water tank, a metering pump is arranged at an outlet of the water tank, and a proportional valve is arranged at an outlet of the dust suppressant tank. An outlet of the medicament tank is sequentially connected with the booster water pump, the fine filtering device and the nozzles through the discharging pipeline, the nozzles are evenly arranged along a cantilever of the stacker-reclaimer, the coarse filtering device and the fine filtering device can effectively reduce the blocking probability and prolong the service life of dust suppression equipment, the booster water pump promotes movement, and the dust suppression efficiency is improved through the micropore high-pressure impact type atomization technology of the nozzles. Multi-stage and multi-section filtration can effectively enhance the anti-blocking characteristic of the system, so that the spraying is more uniform, and the spraying dust removal effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of dust suppression spraying at stack positions, in particular to a dust suppression spraying device for stack positions of a stacker-reclaimer. Background Art

[0002] Stacker-reclaimer, also known as bucket wheel stacker-reclaimer, is a new type of high-efficiency continuous loading and unloading machinery. It continuously grabs materials through the bucket wheel mechanism and transports them to the conveyor belt on the stacker-reclaimer, and then transports the materials to the required equipment through the conveyor belt. Since powdered and blocky materials such as coal are prone to generate dust when being grabbed, stackers are often equipped with spray systems to suppress dust. The crust-type dust suppressant is a water-soluble polymer material with bonding and curing effects added to the sprayed water. After curing according to the amount used, a stable protective film with a thickness of about 1 cm is formed to prevent dust from escaping.

[0003] The atomization effect of water mist dust suppression technology is not very good when the pressure is lower than 0.8MPa, and the atomization effect is good when it is higher than 5.0MPa. Water mist dust suppression uses a dust suppressant mixture to be pressurized by a medium-pressure unit, and then reaches the nozzle through a medium-pressure pipeline. The water vapor is ejected through a small hole under pressure to achieve the conversion of pressure potential energy to kinetic energy, thereby obtaining a higher flow rate relative to the surrounding gas, and the liquid is atomized through the strong shear effect between the gas and the liquid. The parameters are set through the PLC remote control system to set the operating time of the spray system, and the action of the system is controlled by the solenoid valve. However, due to the reserved layout space and power of the stacker and reclaimer, the traditional dust suppression spray equipment often cannot meet the on-site use conditions, is prone to clogging, sprays unevenly, and has poor spray dust removal effect. Utility Model Content

[0004] In order to overcome the defects of uneven spraying, easy clogging and poor spray dust removal effect in the prior art, the utility model provides a dust suppression spray device for a stacking position of a stacker and reclaimer.

[0005] The utility model adopts the following technical scheme to solve the technical problem: a dust suppression spray device for a stack of a stacker and reclaimer, comprising a reagent tank, the inlet of which is respectively connected to a water tank and a dust suppressant tank through a feeding pipeline, the inlet of the water tank is provided with a coarse filtering device, the outlet of the water tank is provided with a metering pump, the outlet of the dust suppressant tank is provided with a quantitative valve, the outlet of the reagent tank is sequentially connected to a booster water pump, a fine filtering device and a nozzle through a discharging pipeline, and the nozzles are evenly arranged along the cantilever of the stacker and reclaimer.

[0006] As a further improvement of the utility model, the filtering mesh number of the coarse filtering device is 100 meshes.

[0007] As a further improvement of the utility model, the filter mesh number of the fine filtration device is 200 meshes.

[0008] As a further improvement of the present utility model, a check valve is provided on the discharge pipeline between the booster pump and the fine filtration device.

[0009] As a further improvement of the present utility model, a stirring device is provided inside the chemical agent tank, and a stirring motor for connecting the stirring device is provided on the outer top of the chemical agent tank.

[0010] As a further improvement of the present utility model, the nozzle is a medium-pressure micro-mist atomizing nozzle.

[0011] Compared with the prior art, the present utility model has the following beneficial effects: In this solution, the nozzles are evenly arranged along the boom of the stacker-reclaimer. The coarse filtration device and the fine filtration device can effectively reduce the probability of blockage and extend the service life of the dust suppression equipment. The booster pump promotes the movement. By using the microporous high-pressure impact atomization technology of the nozzles, multi-stage and multi-section filtration can effectively enhance the anti-blocking characteristics of the system, making the spraying more uniform and achieving better spray dust removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0013] Figure 1 FIG. is a schematic structural diagram of a dust suppression spraying device for a stacker-reclaimer bin of the present utility model.

[0014] In the figure: 1. Coarse filtration device; 2. Water tank; 3. Dust suppressant tank; 4. Metering pump; 5. Dosing valve; 6. Chemical agent tank; 7. Booster pump; 8. Check valve; 9. Fine filtration device; 10. Nozzle; 11. Feeding pipeline; 12. Discharge pipeline; 13. Stirring device; 14. Stirring motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In order to make the technical solution and beneficial effects of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with specific embodiments.

[0016] Refer to Figure 1 , an embodiment of the present utility model discloses a dust suppression spraying device for a stacker-reclaimer bin, which includes a chemical agent tank 6. The inlet of the chemical agent tank 6 is respectively connected to the water tank 2 and the dust suppressant tank 3 through a feeding pipeline 11. A coarse filtration device 1 is provided at the inlet of the water tank 2, a metering pump 4 is provided at the outlet of the water tank 2, a dosing valve 5 is provided at the outlet of the dust suppressant tank 3, and the outlet of the chemical agent tank 6 is sequentially connected to a booster pump 7, a fine filtration device 9 and a nozzle 10 through a discharge pipeline 12. The nozzles 10 are evenly arranged along the boom of the stacker-reclaimer.

[0017] Among them, a check valve 8 is provided on the discharge pipeline 12 between the booster pump 7 and the fine filtration device 9.

[0018] The filtration mesh number of the coarse filtration device 1 is 100 meshes, which is mainly used to filter out larger particulate impurities in water. The coarse filtration device 1 is the basic unit that provides stable water quality guarantee for the entire dust suppression system. The coarse filtration device 1 is installed on the inlet side of the water tank 2 to provide basic guarantee for the water quality of the water tank 2 and prevent large particulate foreign matters from entering the water tank 2 and causing blockage of the pipeline.

[0019] The filtration mesh number of the fine filtration device 9 is 200 meshes. The fine filtration device 9 is installed on the outlet side of the booster water pump 7 to further filter out relatively fine particles in the water source. Ensure that the pressurized water will not cause blockage of the small diameter of the nozzle 10. The coarse filtration device 1 and the fine filtration device 9 can effectively reduce the blockage probability and extend the service life of the dust suppression equipment. Multi-stage and multi-section filtration can effectively enhance the anti-blocking characteristics of the system.

[0020] To ensure the normal operation of the water tank 2 and the chemical agent tank 6 in winter, the water tank 2 and the chemical agent tank 6 are insulated with a closed-cell flame-retardant self-extinguishing polystyrene board or polyurethane as the core layer, and an electric heating tape is wound around the inside of the insulation layer of the water tank 2 and the chemical agent tank 6. The thickness can be made 30 - 100 mm according to the actual on-site conditions. The inner layer is a stainless steel water tank, and the outer layer is a common stainless steel plate or color steel plate. Through optimized combination, the inner and outer layers jointly achieve the best heat preservation effect.

[0021] The nozzles 10 are evenly arranged along the boom of the stacker-reclaimer. During operation, the boom of the stacker-reclaimer rotates to a vertical state with the track. The crust-forming dust suppressant mixture stored in the chemical agent tank 6 is conveyed to the nozzles 10 under the action of the booster water pump 7. Water and gas are ejected through small holes under the action of pressure, realizing the conversion of pressure potential energy into kinetic energy, thereby obtaining a relatively high flow velocity relative to the surrounding gas. The liquid is atomized through the strong shearing action between the gas and the liquid. The operation time of the spraying system is set through the PLC remote control system, and the action of the control system is carried out through the solenoid valve. Spraying operation is carried out on the yard. Through this system, while ensuring the suppression of yard dust, the crust-forming dust suppressant on the stack surface is thinner and more uniform. Even when spraying the crust-forming agent in winter, there will be no problem that the frozen coal is too thick and affects production, and it can also save the crust-forming agent and water resources and avoid unnecessary waste.

[0022] When it is necessary to supplement the crust-forming dust suppressant mixture, the water source is purified by the coarse filtration device 1 and then enters the water tank 2. The water in the water tank 2 passes through the metering pump 4 to add water, and the crust-forming dust suppressant in the dust suppressant tank 3 is weighed and quantitatively added medicine by the metering valve 5. The water and the dust suppressant are mixed in the chemical agent tank 6.

[0023] The booster pump 7 promotes the movement of water. By utilizing the microporous high-pressure impact atomization technology of the nozzle 10, water molecules are instantaneously split into mist molecules, achieving an aerosol state and a suspended state. It covers the dust source in a soft and slow-speed mist-like carpet manner, preventing dust particles from becoming airborne particles, so as to achieve the purpose of dust suppression. The nozzle 10 is a medium-pressure micro-mist atomization nozzle. Under appropriate pressure, the medium-pressure micro-mist atomization nozzle can form very fine atomized particles without using compressed air, with uniform distribution and extremely small particles.

[0024] A stirring device 13 is provided inside the chemical agent tank 6, and a stirring motor 14 connected to the stirring device 13 is provided on the outer top of the chemical agent tank 6 to prevent the mixed liquid from precipitating.

[0025] It should be understood that the specific embodiments described herein are only for understanding the present utility model and are not used to limit the present utility model. All other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present utility model.

Claims

1. A dust suppression spray device for a stacker and reclaimer, characterized in that: The invention comprises a reagent tank (6), the inlet of the reagent tank (6) is respectively connected to a water tank (2) and a dust suppressant tank (3) through a feeding pipeline (11), the inlet of the water tank (2) is provided with a coarse filtering device (1), the outlet of the water tank (2) is provided with a metering pump (4), the outlet of the dust suppressant tank (3) is provided with a quantitative valve (5), the outlet of the reagent tank (6) is sequentially connected to a booster water pump (7), a fine filtering device (9) and a nozzle (10) through a discharge pipeline (12), and the nozzle (10) is evenly arranged along the cantilever of the stacker / reclaimer.

2. The dust suppression spraying device for stacking and reclaiming machine according to claim 1, characterized in that: The filter mesh number of the coarse filter device (1) is 100 meshes.

3. The dust suppression spraying device for stacking and reclaiming machine according to claim 2, characterized in that: The filter mesh number of the fine filter device (9) is 200 meshes.

4. The dust suppression spraying device for stacking and reclaiming machine according to claim 3, characterized in that: A check valve (8) is provided on the discharge pipeline (12) between the booster water pump (7) and the fine filtering device (9).

5. The dust suppression spraying device for stacking and reclaiming machine according to claim 4, characterized in that: A stirring device (13) is arranged inside the medicine tank (6), and a stirring motor (14) connected to the stirring device (13) is arranged on the top of the outside of the medicine tank (6).

6. The dust suppression spraying device for stacking and reclaiming machine according to claim 5, characterized in that: The nozzle (10) is a medium-pressure fine mist atomizing nozzle.

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