Snow crystal induced coagulation dust suppression system and method for crushing station under high-cold and high-altitude working conditions of surface mine

Abstract

The invention discloses a snow crystal induced coagulation dust suppression system and method for a crushing station under high-cold and high-altitude working conditions of a surface mine, and belongs to the technical field of mine dust suppression. The snow crystal induced coagulation dust suppression system comprises a water supply function module, an air supply function module and a snow crystal coagulation dust suppression module; one end of the snow crystal coagulation dust suppression module is connected with the water supply function module, and the other end of the snow crystal coagulation dust suppression module is connected with the air supply function module; the water supply function module is used for providing water mist for the snow crystal condensation dust suppression module; the air supply function module is used for providing high-pressure cold air for the snow crystal condensation dust suppression module; the snow crystal condensation dust suppression module is used for fully impacting and mixing water mist and high-pressure cold air, and internally inducing to generate snow crystals; and a spray head is arranged on the snow crystal condensation dust suppression module and is used for spraying snow crystals. According to the scheme, the flying dust pollution problem of the crushing station under the high-cold and high-altitude working conditions of the surface mine is effectively solved, the mine operation environment quality is improved, and meanwhile, the harm of dust to the surrounding ecological environment and the health of workers is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of mine dust suppression, and more specifically relates to a snow crystal induced condensation dust suppression system and method for a crushing station under the working conditions of high cold and high altitude in open-pit mines. Background Art

[0002] Open-pit mining is to strip the overlying soil and surrounding rocks covering the ore body in an open space within a certain range and extract the ore. Due to the characteristics of open-pit mining, the mining site is in direct contact with the air. In addition to a large amount of dust generated during processes such as drilling, blasting, secondary fragmentation, and loading, dust will also be spontaneously generated under the action of wind. At this time, a dust suppression device is required to prevent the dust from being lifted into the air. However, in high-cold and high-altitude areas of open-pit mines, due to the cold climate and dry air, the traditional spray dust suppression method is prone to icing in this low-temperature environment, affecting the dust suppression effect and resulting in serious waste of water resources. At the same time, ordinary dust suppression equipment is difficult to achieve the ideal dust suppression efficiency in high-cold and high-altitude areas due to reasons such as low air pressure and decreased equipment performance. Therefore, how to provide an efficient dust suppression system and method suitable for the working conditions of high cold and high altitude in open-pit mines is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0003] In view of this, the present invention provides a snow crystal induced condensation dust suppression system and method for a crushing station under the working conditions of high cold and high altitude in open-pit mines, and adopts the following technical solutions: A snow crystal induced condensation dust suppression system for a crushing station under the working conditions of high cold and high altitude in open-pit mines, comprising a water supply function module, an air supply function module, and a snow crystal condensation dust suppression module; one end of the snow crystal condensation dust suppression module is connected to the water supply function module, and the other end is connected to the air supply function module; the water supply function module is used to provide water mist for the snow crystal condensation dust suppression module; the air supply function module is used to provide high-pressure cold air for the snow crystal condensation dust suppression module; the snow crystal condensation dust suppression module is used to fully impact and mix the water mist and the high-pressure cold air to induce the generation of snow crystals inside; a nozzle is arranged on the snow crystal condensation dust suppression module for spraying snow crystals.

[0004] Further, the water supply function module includes a water storage chamber, a pressure pump, and a high-pressure water pump connected in sequence by a water supply pipeline; supply water is arranged in the water storage chamber; the pressure pump feeds water into the high-pressure water pump, and the high-pressure water pump generates high-pressure water mist; the high-pressure water pump is connected to the snow crystal condensation dust suppression module through a high-pressure water pipe.

[0005] Further, a valve is also arranged on the water supply pipeline between the water storage chamber and the pressure pump for controlling water supply; a pressure gauge and a flow regulating valve are also arranged on the water supply pipeline between the pressure pump and the high-pressure water pump.

[0006] Further, the air supply function module includes a high-pressure air compressor, and a high-pressure air outlet is provided on one side of the high-pressure air compressor, which is connected to the high-pressure air inlet of the snow crystal aggregation dust suppression module through an air delivery pipeline.

[0007] Further, the snow crystal aggregation dust suppression module includes an atomization chamber, an air chamber, a snow-making chamber, two groups of impellers and several groups of nozzles; both ends of the snow-making chamber are respectively connected to the atomization chamber and the air chamber; the atomization chamber and the air chamber are respectively fixedly connected to the impellers through impeller fixing piles on the side facing the center of the snow-making chamber; several nozzles are installed on the upper side of the snow-making chamber.

[0008] Further, a high-pressure water mist input port is provided at one end of the atomization chamber, which is connected to the water supply function module, and high-pressure water mist is introduced into the snow-making chamber through the impeller at the other end; a high-pressure air input port is provided at one end of the air chamber, which is connected to the air supply function module, and high-pressure gas is introduced into the snow-making chamber through the impeller at the other end.

[0009] Further, the nozzle includes a nozzle housing, a wind wheel and a hyperbolic guide cylinder; one end of the nozzle housing is threadedly connected to the snow-making chamber, and the other end is connected to the hyperbolic guide cylinder; the wind wheel is arranged at the connection between the hyperbolic guide cylinder and the nozzle housing; several blades spirally surrounding radially along the hyperbolic guide cylinder are uniformly arranged on the outer wall circumference of the hyperbolic guide cylinder; the twisting direction of the wind wheel is the same as that of the blades, and the inclination angle of the blades is greater than that of the wind wheel.

[0010] Further, a sealing ring is also provided at the connection between the nozzle housing and the upper wall of the snow-making chamber.

[0011] A method for snow crystal induced aggregation dust suppression at a crushing station under high-cold and high-altitude working conditions in open-pit mines includes the following steps: Obtain the working environment conditions of the crushing station; Determine the working conditions of the snow crystal aggregation dust suppression module according to the working environment conditions of the crushing station; Adopt a double-layer vacuum insulation + electric tracing heating insulation process for the water supply pipeline and the high-pressure water pipe, and add propylene glycol antifreeze with a concentration of 40% to the water storage chamber before starting the dust suppression system; Adopt a titanium alloy inner cavity and a nano-ceramic coating for the nozzles to prevent the nozzles from freezing inside due to low temperature and avoid blocking the ejection of snow crystals; Start the dust suppression system, operate the water supply function module, the air supply function module and the snow crystal aggregation dust suppression module to manufacture a snow crystal flow for dust suppression.

[0012] Further, the start time of the crushing station is the same as the start time of the dust suppression system, and the stop time of the crushing station is the same as the stop time of the dust suppression system.

[0013] The beneficial effects of the present invention are as follows: The present invention provides a snow crystal induced coagulation dust suppression system and method for a crushing station under high-cold and high-altitude working conditions in open-pit mines. Snow crystals are manufactured in a snow-making cavity and ejected through a nozzle to form a snow crystal flow. The generated snow crystals interact with the dust particles produced by the crushing station. By utilizing the adsorption and coagulation characteristics of the snow crystals, the dust particles agglomerate and become larger, thereby achieving efficient sedimentation. The solution of the present invention does not need to rely on a large number of complex devices and high-energy-consuming treatment processes, makes full use of the environmental conditions itself, and has the advantages of low cost, good effect, environmental friendliness and strong sustainability. It effectively solves the dust pollution problem of the crushing station under high-cold and high-altitude working conditions in open-pit mines, improves the quality of the mine working environment, and at the same time reduces the harm of dust to the surrounding ecological environment and the health of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of snow crystal dust suppression ejected from the snow crystal coagulation dust suppression module of the present invention.

[0017] Figure 3 It is a schematic diagram of the structure of the nozzle in the snow crystal coagulation dust suppression module of the present invention.

[0018] Among them, in the figure: 100 - water supply function module; 101 - water storage chamber; 102 - valve; 103 - pressure pump; 104 - pressure gauge; 105 - flow regulating valve; 106 - high-pressure water pump; 107 - water supply pipeline; 108 - water inlet; 109 - water inlet port; 110 - high-pressure water mist output port; 111 - high-pressure water pipe; 200 - air supply function module; 201 - high-pressure air compressor; 202 - air conveying pipeline; 203 - high-pressure air output port; 300 - snow crystal coagulation dust suppression module; 301 - high-pressure water mist input port; 302 - atomization chamber; 303 - high-pressure air input port; 304 - air chamber; 305 - impeller fixing pile; 306 - impeller; 307 - snow-making cavity; 400 - nozzle; 401 - thread; 402 - sealing ring; 403 - nozzle housing; 404 - hexagonal column; 405 - wind wheel; 406 - blade; 407 - hyperbolic guide cylinder; 408 - snow crystal flow. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to the attached Figures 1-3 , the present invention provides a snow crystal induced condensation dust suppression system for a crushing station under the working conditions of alpine and high altitude in open-pit mines, including a water supply function module 100, an air supply function module 200, and a snow crystal condensation dust suppression module 300.

[0021] One end of the snow crystal condensation dust suppression module 300 is connected to the water supply function module 100, and the other end is connected to the air supply function module 200; the water supply function module 100 is used to provide water mist for the snow crystal condensation dust suppression module 300; the air supply function module 200 is used to provide high-pressure cold air for the snow crystal condensation dust suppression module 300. The snow crystal condensation dust suppression module 300 is used for the water mist and the high-pressure cold air to fully impact and mix, inducing the generation of snow crystals inside for dust suppression.

[0022] The water supply function module 100 includes a water storage chamber 101, a pressure pump 103, and a high-pressure water pump 106 that are sequentially connected through a water supply pipeline 107; supply water is provided in the water storage chamber 101; the pressure pump 103 passes water into the high-pressure water pump 106, and the high-pressure water pump 106 manufactures high-pressure water mist; the high-pressure water pump 106 is connected to the snow crystal condensation dust suppression module 300 through a high-pressure water pipe 111, and conveys the high-pressure water mist to the snow crystal condensation dust suppression module 300.

[0023] An inlet 108 is provided on one side of the water storage chamber 101, which is connected to the water supply pipeline 107; a valve 102 is also provided on the water supply pipeline 107 between the water storage chamber 101 and the pressure pump 103 for controlling water supply; an inlet 109 is provided on one side of the high-pressure water pump 106, which is connected to the water supply pipeline 107; a pressure gauge 104 and a flow regulating valve 105 are also provided on the water supply pipeline 107 between the pressure pump 103 and the high-pressure water pump 106 for adjusting the water supply flow according to the dust suppression demand to avoid waste of water resources.

[0024] A high-pressure water mist output port 110 is provided at the outlet of the high-pressure water pump 106, which is connected to the high-pressure water mist input port 301 of the snow crystal condensation dust suppression module 300 through a high-pressure water pipe 111.

[0025] The air supply function module 200 includes a high-pressure air compressor 201, which is used to compress the cold air in the existing alpine, high-altitude and low-temperature environment and pressurize it to form high-pressure air; a high-pressure air outlet 203 is arranged on one side of the high-pressure air compressor 201, and is connected to the high-pressure air inlet 303 of the snow crystal condensation dust suppression module 300 through an air delivery pipe 202.

[0026] The snow crystal condensation dust suppression module 300 includes an atomization chamber 302, an air chamber 304, a snow-making chamber 307, two groups of impellers 306 and several groups of nozzles 400; both ends of the snow-making chamber 307 are respectively connected to the atomization chamber 302 and the air chamber 304; the atomization chamber 302 and the air chamber 304 are respectively fixedly connected to the impellers 306 through impeller fixing piles 305 on the side facing the center of the snow-making chamber 307. Several nozzles 400 are installed on the upper side of the snow-making chamber 307.

[0027] One end of the atomization chamber 302 is provided with a high-pressure water mist inlet 301, which is connected to the water supply function module 100, and the other end passes through the impeller 306 to introduce high-pressure water mist into the snow-making chamber 307. One end of the air chamber 304 is provided with a high-pressure air inlet 303, which is connected to the air supply function module 200, and the other end passes through the impeller 306 to introduce high-pressure gas into the snow-making chamber 307. The high-pressure water mist and the high-pressure cold air fully impact and mix in the snow-making chamber 307 to induce the formation of snow crystals, which are sprayed out through the nozzles 400.

[0028] The nozzle 400 includes a nozzle housing 403, a wind wheel 405 and a hyperbolic guide cylinder 407; one end of the nozzle housing 403 connected to the snow-making chamber 307 is provided with a thread 401, which is threadedly connected to the upper wall of the snow-making chamber 307, and the other end is connected to the hyperbolic guide cylinder 407; the wind wheel 405 is arranged at the connection between the hyperbolic guide cylinder 407 and the nozzle housing 403; a plurality of blades 406 are evenly arranged circumferentially on the outer wall of the hyperbolic guide cylinder 407 for forming a stable dust suppression effect on the ejected snow crystals. The wind wheel 405 is used to guide the external wind force, the twisting direction of the wind wheel 405 is the same as that of the blades 406, and the inclination angle of the blades 406 is slightly larger than that of the wind wheel 405 to ensure the consistency of the front and rear wind directions. The hyperbolic guide cylinder 407 guides the snow crystals ejected from the snow-making chamber 307, and the ejected snow crystal flow is used for dust suppression. The hyperboloid formed axially by the blades 406 is used to guide the snow crystals, and spirally surrounds along the radial direction of the hyperbolic guide cylinder 407 to increase the flow velocity of the snow crystal flow ejected by the wind wheel 405.

[0029] A sealing ring 402 is also arranged at the connection between the nozzle housing 403 and the upper wall of the snow-making chamber 307 for sealing to prevent the snow crystals in the snow-making chamber from relieving pressure and affecting the snow spraying and dust suppression effect. A hexagonal prism 404 is arranged on the outside of the nozzle housing 403 for assisting rotation.

[0030] The working principle of the present invention is as follows: In the snow-making chamber 307, high-pressure atomized water mist and high-pressure cold air input through the water supply function module 100 and the air supply function module 200 on both sides are fully impacted and mixed in the snow-making chamber 307 to induce the formation of snow crystals, which are ejected through the nozzle 400. The wind wheel 405 at the top of the nozzle 400 ejects the snow crystals, and the snow crystal flow 408 is induced through the blades 406 to suppress dust for the crushing station under the working conditions of high altitude and cold in open-pit mines, improving the quality of the mine operation environment, and at the same time reducing the harm of dust to the surrounding ecological environment and the health of workers.

[0031] The present invention also provides a method for suppressing dust by inducing and aggregating snow crystals in a crushing station under the working conditions of high altitude and cold in open-pit mines. Using the above system, it includes the following steps: Obtain the working environment conditions of the crushing station; According to the working environment conditions of the crushing station, determine the working conditions of the snow crystal aggregation and dust suppression module 300; Adopt a double-layer vacuum insulation + electric tracing heating insulation process for the water supply pipeline 107 and the high-pressure water pipe 111, and add propylene glycol antifreeze with a concentration of 40% to the water storage chamber 101 before starting the dust suppression system; prevent the water supply function module 200 from freezing due to low temperature and avoid the inability to supply water; Adopt a titanium alloy inner cavity and a nano-ceramic coating for the nozzle 400 to prevent the inside of the nozzle 400 from freezing due to low temperature and avoid blocking the ejection of snow crystals; Start the dust suppression system, operate the water supply function module 100, the air supply function module 200 and the snow crystal aggregation and dust suppression module 300 to manufacture a snow crystal flow for dust suppression; The start time of the crushing station is the same as the start time of the dust suppression system, and the stop time of the crushing station is the same as the stop time of the dust suppression system.

[0032] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the relevant parts, reference can be made to the description in the method part.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A snow crystal-induced condensation dust suppression system for a crushing station under the working conditions of high cold and high altitude in open-pit mines, characterized in that, It includes a water supply function module (100), an air supply function module (200), and a snow crystal aggregation dust suppression module (300); one end of the snow crystal aggregation dust suppression module (300) is connected to the water supply function module (100), and the other end is connected to the air supply function module (200); the water supply function module (100) is used to provide water mist for the snow crystal aggregation dust suppression module (300); the air supply function module (200) is used to provide high-pressure cold air for the snow crystal aggregation dust suppression module (300); the snow crystal aggregation dust suppression module (300) is used to fully impact and mix the water mist and the high-pressure cold air to induce the generation of snow crystals inside; a nozzle (400) is arranged on the snow crystal aggregation dust suppression module (300) for spraying snow crystals.

2. The snow crystal-induced aggregation dust suppression system for a crushing station under the working conditions of alpine and high-altitude open-pit mines according to claim 1, wherein, The water supply function module (100) includes a water storage chamber (101), a pressure pump (103), and a high-pressure water pump (106) connected in sequence by a water supply pipeline (107); a supply of water is arranged in the water storage chamber (101); the pressure pump (103) passes water into the high-pressure water pump (106), and the high-pressure water pump (106) generates high-pressure water mist; the high-pressure water pump (106) is connected to the snow crystal aggregation dust suppression module (300) through a high-pressure water pipe (111).

3. A snow crystal-induced coagulation dust suppression system for a crushing station under high-cold and high-altitude working conditions in open-pit mines, characterized in that, A valve (102) is further arranged on the water supply pipeline (107) between the water storage chamber (101) and the pressure pump (103) for controlling water supply; a pressure gauge (104) and a flow regulating valve (105) are further arranged on the water supply pipeline (107) between the pressure pump (103) and the high-pressure water pump (106).

4. The snow crystal-induced coagulation dust suppression system for a crushing station under the working conditions of alpine and high-altitude open-pit mines according to claim 1, characterized in that, The air supply function module (200) includes a high-pressure air compressor (201), and a high-pressure air outlet (203) is arranged on one side of the high-pressure air compressor (201), and is connected to the high-pressure air inlet (303) of the snow crystal aggregation dust suppression module (300) through an air delivery pipeline (202).

5. The snow crystal-induced aggregation dust suppression system for a crushing station under the working conditions of alpine and high altitude in open-pit mines according to claim 1, wherein The snow crystal aggregation dust suppression module (300) includes an atomization chamber (302), an air chamber (304), a snow-making chamber (307), two groups of impellers (306), and several groups of nozzles (400); both ends of the snow-making chamber (307) are respectively connected to the atomization chamber (302) and the air chamber (304); the atomization chamber (302) and the air chamber (304) are respectively fixedly connected to the impellers (306) through impeller fixing piles (305) on the side facing the center of the snow-making chamber (307); several nozzles (400) are installed on the upper side of the snow-making chamber (307).

6. The snow crystal induced coagulation dust suppression system for a crushing station under the working conditions of alpine and high altitude in open-pit mines according to claim 5, characterized in that, One end of the atomization chamber (302) is provided with a high-pressure water mist inlet (301), which is connected to the water supply function module (100), and the other end passes high-pressure water mist into the snow-making chamber (307) through the impeller (306); one end of the air chamber (304) is provided with a high-pressure air inlet (303), which is connected to the air supply function module (200), and the other end passes high-pressure gas into the snow-making chamber (307) through the impeller (306).

7. A snow crystal-induced coagulation dust suppression system for a crushing station under alpine and high-altitude working conditions in open-pit mines, characterized in that, The spray head (400) includes a spray head housing (403), a wind wheel (405), and a hyperbolic guide cylinder (407); one end of the spray head housing (403) is threadedly connected to the snow-making chamber (307), and the other end is connected to the hyperbolic guide cylinder (407); the wind wheel (405) is arranged at the connection between the hyperbolic guide cylinder (407) and the spray head housing (403); a plurality of blades (406) spirally surrounding the hyperbolic guide cylinder (407) in the radial direction are evenly arranged circumferentially on the outer wall of the hyperbolic guide cylinder (407); the twisting direction of the wind wheel (405) is the same as that of the blades (406), and the inclination angle of the blades (406) is greater than that of the wind wheel (405).

8. A snow crystal induced coagulation dust suppression system for a crushing station under the working conditions of alpine and high altitude in open-pit mines, characterized in that, A sealing ring (402) is further arranged at the connection between the upper wall of the spray head housing (403) and the snow-making chamber (307).

9. A method for suppressing dust by snow crystal-induced aggregation in a crushing station under the working conditions of alpine and high-altitude open-pit mines according to any one of claims 1-8, characterized in that It includes the following steps: Obtain the working environment condition of the crushing station; Determine the working condition of the snow crystal agglomeration dust suppression module (300) according to the working environment condition of the crushing station; Adopt a double-layer vacuum insulation + electric tracing heating insulation process for the water supply pipeline (107) and the high-pressure water pipe (111), and add propylene glycol antifreeze with a concentration of 40% to the water storage chamber (101) before the dust suppression system is started; Adopt a titanium alloy inner cavity and a nano-ceramic coating for the spray head (400) to prevent the inside of the spray head (400) from freezing due to low temperature and avoid blocking the ejection of snow crystals; Start the dust suppression system, operate the water supply function module (100), the air supply function module (200), and the snow crystal agglomeration dust suppression module (300) to manufacture a snow crystal flow for dust suppression.

10. A method for suppressing dust by snow crystal induced aggregation in a crushing station under the working conditions of high cold and high altitude in open-pit mines, characterized in that, The start time of the crushing station is the same as the start time of the dust suppression system, and the stop time of the crushing station is the same as the stop time of the dust suppression system.

Images