A dry fog dust-settling system for a rough crushing bin of a copper smelting slag dressing plant

Abstract

The application discloses a dry fog dust falling system for a rough crushing bin of a copper smelting slag dressing plant, a bin house is built at a discharging port of a plant house, the bin house is open on three sides, one side is connected with a wall of the plant house and is communicated to the discharging port, the dry fog dust falling belt is arranged around the roof of the bin house, the dry fog dust falling belt is composed of a plurality of dry fog box assemblies connected one by one, is used for spraying dry fog to form a three-side connected fog curtain and separates the discharging port from the outside space, the dry fog dust falling belt is laid in a linear structure in a head-to-tail mode along the outer edge of the roof of the bin house, the flexible applicability of the actual assembly of the dry fog dust falling spraying equipment is improved, the water mist is sprayed out from top to bottom by the dry fog dust falling belt, one or more fog curtains are formed, the inside and outside space of the bin house can be separated, the whole discharging port forms a separated space composed of the multi-faceted fog curtain, and industrial dust overflow is effectively prevented.

Description

Technical Field

[0001] This invention relates to the field of dust suppression technology in coarse crushing bins of mines, and more specifically to a dry fog dust suppression system for coarse crushing bins in copper smelting slag beneficiation plants. Background Technology

[0002] In recent years, with the needs of national development, the copper smelting industry has grown increasingly larger, resulting in a surge in industrial dust. Currently, industrial dust has become a significant source of atmospheric particulate matter pollution, not only polluting the environment but also posing a threat to human health.

[0003] With the introduction of the green development concept, people are paying increasing attention to environmental protection and air quality, making industrial dust pollution control a crucial issue that the copper smelting industry must address. Currently, in the copper smelting industry, most slag beneficiation plants use dry fog spraying for dust suppression in the coarse crushing bins. This involves spraying dry fog in the feeding and unloading areas of the plant, using accelerating gas to agitate the water droplets from nozzles and direct them at dust-generating points to suppress dust and prevent its spread. However, in existing technologies, the construction of dry fog dust suppression spraying equipment is not only labor-intensive but also occupies a large space, making it difficult to integrate seamlessly with the actual plant environment. Furthermore, traditional dry fog dust suppression spraying equipment typically uses high-speed airflow to directly break the water medium into water droplets within the nozzles before spraying, but the spray diffusion range of the nozzles is limited, which is not conducive to effectively suppressing large areas of dispersed industrial dust. Summary of the Invention

[0004] The present invention provides a dry fog dust suppression system for the coarse crushing bin of a copper smelting slag beneficiation plant that can be flexibly applied to the actual environment of the plant and meet the needs of large-area industrial dust suppression, and can solve at least one of the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a dry fog dust suppression system for the coarse crushing bin of a copper smelting slag beneficiation plant:

[0006] A warehouse is built at the unloading port of the factory building. The warehouse is open on three sides, and one side is connected to the wall of the factory building and connected to the unloading port.

[0007] Includes a dry fog dust suppression belt surrounding the roof of the open three sides of the warehouse. The dry fog dust suppression belt is composed of multiple interconnected dry fog boxes, which are used to spray dry fog to form a three-sided interconnected fog curtain and isolate the unloading port from the external space.

[0008] The dry fog box assembly comprises an outer pipe, an inner pipe, nozzle mechanisms, an air inlet pipe joint and a water inlet pipe joint, the inner pipe is arranged in the outer pipe, the air inlet pipe joint is communicated with and fixed to the outer pipe for high-pressure air supply into the outer pipe, the water inlet pipe joint penetrates through the outer pipe, is communicated with and fixed to the inner pipe for high-pressure water supply into the inner pipe, and the nozzle mechanisms are multiple, are arranged in two rows in front and back and are spaced, each of the nozzle mechanisms penetrates through the inner pipe and extends outward from the outer pipe for forming a double-layer fog curtain.

[0009] Further, the nozzle mechanism comprises a flared pipe, a guide pipe and a pointed pipe.

[0010] The flared pipe is attached to the top of the inner pipe, the guide pipe is rotatably communicated with the bottom of the flared pipe and vertically penetrates into the inner pipe, and the pointed pipe is fixedly communicated with the bottom of the guide pipe and extends downward from the bottom of the inner pipe and the outer pipe.

[0011] Further, the flared pipe is centrally provided with an air inlet communicated with the guide pipe and the pointed pipe, the air inlet is used for filling the high-pressure gas input by the air inlet pipe joint, the bottom of the flared pipe is provided with an inner tangent ring groove around the air inlet, and the top pipe wall of the guide pipe is provided with a flange ring, which is rotatably inserted and matched with the inner tangent ring groove.

[0012] Further, a plurality of water inlet holes are vertically and spacedly arranged on the guide pipe, and the water inlet holes are used for introducing or flowing out the high-pressure water flow input by the water inlet pipe joint.

[0013] Further, the inside of the pointed pipe is provided with a water distribution assembly, and the water distribution assembly comprises a fixed disc, a fixed rod, a sleeve and a blade.

[0014] The fixed disc is attached to the inner wall of the pipe of the pointed pipe in a circumferential direction, a plurality of water distribution grooves are annularly and spacedly arranged on the fixed disc, the water distribution grooves are used for introducing the high-pressure water flow into the inside of the pointed pipe, the fixed rod is vertically and downwardly fixed to the bottom of the fixed disc, the sleeve is rotatably sleeved on the periphery of the fixed rod, and the blade is multiple, annularly and spacedly arranged on the outer wall of the sleeve, and the blade has a movement stroke of freely rotating around the fixed rod under the scouring of the high-pressure water flow.

[0015] Further, the blade of the blade has a structure of being wide at the top and narrow at the bottom, thin inside and thick outside, and the outer periphery of the blade is close to but not attached to the inner wall of the pointed pipe.

[0016] Further, the inner pipeline is fixedly attached to the inner wall bottom surface of the outer pipeline, and gaps are left between the two ends and the top of the inner pipeline and the outer pipeline, and water seepage holes are formed in the inner wall bottom surface of the outer pipeline and the two ends of the inner pipeline.

[0017] Further, the dry fog tank assembly further comprises support hangers, and the support hangers are at least two and are fixed at the two ends of the top of the outer pipeline and are hung along the outer edge of the bottom of the roof of the warehouse.

[0018] Further, the warehouse comprises a warehouse roof and beam columns, the warehouse roof is horizontally located directly above the discharge port and is attached to one side of the wall of the factory building, and the beam columns are two and are vertically and spacedly fixed on the two sides of one side of the warehouse roof away from the discharge port to form a hollow space with three open sides and one side connected to the wall of the factory building.

[0019] Further, the warehouse further comprises:

[0020] An environmental monitoring station is installed on the top of the warehouse and is used for real-time monitoring of the air quality and weather conditions of the coarse crushing warehouse and the surrounding environment.

[0021] A gas storage tank is sealingly connected to the gas inlet pipe joint through a gas conveying pipe and is used for conveying high-pressure gas into the outer pipeline.

[0022] A water storage tank is sealingly connected to the water inlet pipe joint through a water conveying pipe and is used for conveying high-pressure water flow into the inner pipeline.

[0023] A booster pump comprises a booster gas pump and a booster water pump and is connected to the gas storage tank and the water storage tank, respectively, and is used for increasing the conveying pressure of the gas flow and the water flow.

[0024] A multi-stage water purification and filtration module is connected between the water storage tank and the inner pipeline and is used for filtering and purifying the high-pressure water flow.

[0025] A remote control end is wirelessly connected to the environmental monitoring station, the gas storage tank, the water storage tank, the booster pump and the multi-stage water purification and filtration module, and is provided with a DCS interlocking control center and a power distribution control box, the DCS interlocking control center adopts interval control logic and is used for receiving and analyzing the collected signals fed back by the environmental monitoring station and simultaneously controlling the working state of the dry fog dust suppression belt according to the interval conditions met by the collected signals.

[0026] The beneficial effects of the present application are embodied in:

[0027] 1. In the application, a warehouse with three open sides and one connected to the factory wall is built around the factory discharge port, forming a pavilion structure connected to the discharge port. Therefore, a dry mist dust suppression belt is laid along the outer edge of the roof of the three open sides of the warehouse in a linear structure, improving the flexibility and applicability of the actual assembly of the dry mist dust suppression spraying equipment. The water mist is sprayed from top to bottom by the dry mist dust suppression belt, forming one or more layers of mist curtain, which can isolate the inside and outside space of the warehouse, making the entire discharge port form an isolated space composed of multiple mist curtains, effectively preventing industrial dust overflow.

[0028] 2. In the application, the conduit is rotationally connected to the bottom of the flared pipe. Whether in water or air intake conditions, high-pressure gas and high-pressure water flow will impact the conduit, causing the conduit to continuously rotate, which can throw the water medium in the conduit out in a rotating posture, increasing the diffusion range of water mist spraying. At the same time, the high-pressure gas or high-pressure water flow from the conduit to the sharp pipe will be further squeezed when passing through the water distribution groove on the fixed disc, further increasing the pressure, which can improve the jet impact force of the water medium and the degree of water medium crushing by high-pressure gas. In this way, under the impact of the water flow and gas flow, each impeller blade will rotate rapidly around the fixed rod, and the same applies to the above, which can quickly throw the water medium in the sharp pipe out in a rotating posture, further increasing the diffusion range of water mist spraying, effectively inhibiting large-area floating industrial dust. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is the installation schematic diagram of the dry mist dust suppression system of the embodiment of the application.

[0030] Figure 2 is the front structure sectional view of the dry mist box assembly of the embodiment of the application.

[0031] Figure 3 is the side structure sectional view of the dry mist box assembly of the embodiment of the application.

[0032] Figure 4 is the sectional view of the nozzle mechanism of the embodiment of the application.

[0033] Figure 5 is the overall structure schematic diagram of the water distribution assembly of the embodiment of the application.

[0034] The labels of the components in the drawings are as follows: 1, factory building; 101, discharge port; 2, warehouse; 201, warehouse roof; 202, beam column; 3, environmental monitoring station; 4, dry fog box assembly; 5, dry fog dust suppression belt; 6, outer pipeline; 601, water seepage hole; 7, inner pipeline; 8, nozzle mechanism; 9, air inlet pipe joint; 10, water inlet pipe joint; 11, support hanger; 12, flared pipe; 1201, air inlet; 1202, inner ring groove; 13, guide pipe; 1301, water inlet hole; 1302, flange ring; 14, sharp mouth pipe; 15, water distribution assembly; 16, fixed disc; 1601, water distribution groove; 17, fixed rod; 18, sleeve pipe; 19, impeller blade. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. It should be noted that if there is a directional indication (such as up, down, left, right, front, back, etc.) in the embodiments of the present application, the directional indication is only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), if the certain posture changes, the directional indication also changes accordingly. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, "multiple" means more than two.

[0036] Referring to Figures 1-3 The embodiments of the present application provide a dry fog dust falling system for a rough crushing warehouse of a copper smelting slag dressing plant:

[0037] A warehouse 2 is built at the discharge port 101 of the factory building 1, the warehouse 2 is open on three sides, one side is connected with the wall of the factory building 1 and is communicated to the discharge port 101;

[0038] The dry fog dust suppression belt 5 is arranged around the roof of the warehouse 2, the dry fog dust suppression belt 5 is composed of a plurality of dry fog box assemblies 4 connected one by one, for spraying dry fog to form a three-sided connected fog curtain, and isolating the discharge port 101 from the outside space;

[0039] The dry fog box assembly 4 comprises an outer pipe 6, an inner pipe 7, nozzle mechanisms 8, an air inlet pipe joint 9 and a water inlet pipe joint 10, the inner pipe 7 is arranged in the outer pipe 6, the air inlet pipe joint 9 is communicated and fixed to the outer pipe 6 for high-pressure air supply into the outer pipe 6, the water inlet pipe joint 10 penetrates through the outer pipe 6, is communicated and fixed to the inner pipe 7 for high-pressure water supply into the inner pipe 7, and the nozzle mechanisms 8 are arranged in two rows in front and back and are spaced apart, each of the nozzle mechanisms 8 penetrates through the inner pipe 7 and extends outwardly from the outer pipe 6 for forming a double-layer fog curtain.

[0040] In the present application, a warehouse with three open sides and one connected to the wall of the factory building is built around the discharge port of the factory building, and the warehouse forms a pavilion structure connected to the discharge port. Therefore, a dry fog dust suppression belt is arranged along the outer edge of the roof of the three open sides of the warehouse in a linear structure connected at the head and tail, improving the flexible applicability of the actual assembly of the dry fog dust suppression and spraying equipment. The water mist is sprayed downward from the dry fog dust suppression belt to form one or more layers of fog curtain, which can isolate the inside and outside space of the warehouse, so that the entire discharge port forms an isolated space composed of multiple fog curtains, effectively preventing industrial dust from overflowing.

[0041] Referring to Figure 4 In the present embodiment, the nozzle mechanism 8 comprises a flared pipe 12, a guide pipe 13 and a sharp mouth pipe 14.

[0042] The flared pipe 12 is attached to the top of the inner pipe 7, the guide pipe 13 is rotatably communicated at the bottom of the flared pipe 12 and vertically penetrates into the inner pipe 7, and the sharp mouth pipe 14 is fixedly communicated at the bottom of the guide pipe 13 and extends downwardly from the bottom of the inner pipe 7 and the outer pipe 6. In this way, the flared pipe 12, the guide pipe 13 and the sharp mouth pipe 14 are communicated upwardly and downwardly, the flared pipe 12 is arranged outside the inner pipe 7 and inside the outer pipe 6, the high-pressure gas input into the outer pipe 6 by the air inlet pipe joint 9 can be directly filled into the nozzle mechanism 8 through the flared pipe 12, the guide pipe 13 is entirely arranged inside the inner pipe 7, and the high-pressure water flow input into the inner pipe 7 by the water inlet pipe joint 10 can be poured downwardly into the sharp mouth pipe 14 and sprayed out through the guide pipe 13.

[0043] Referring to Figure 4In the embodiment, the flared pipe 12 is centrally provided with an air inlet 1201 connected to the conduit 13 and the spout pipe 14, which is used to fill the high-pressure gas input by the air inlet pipe joint 9, and the bottom of the flared pipe 12 is provided with an inner tangent ring groove 1202 around the air inlet 1201, and the top pipe opening of the conduit 13 is provided with a flange ring 1302 on the inner wall, which is rotationally inserted and matched with the inner tangent ring groove 1202. In this way, the conduit 13 is rotationally connected to the bottom of the flared pipe 12, so that under the conditions of water inlet or air inlet, the high-pressure gas and the high-pressure water flow will impact the conduit 13, so that the conduit 13 can continuously rotate, thereby enabling the water medium in the conduit 13 to be thrown out in a rotating posture, increasing the diffusion range of water mist spraying, and at the same time, the flared pipe 12 is fixedly installed, which can limit and suppress the conduit 13, preventing the conduit 13 from being separated from the inner pipe 7 during rotation.

[0044] Referring to Figure 4 In the embodiment, a plurality of water inlet holes 1301 are vertically spaced apart on the conduit 13, which are used to introduce or flow out the high-pressure water flow input by the water inlet pipe joint 10. In this way, the high-pressure water flow injected into the inner pipe 7 by the water inlet pipe joint 10 flows into the conduit 13 through each water inlet hole 1301, and the water medium flows between each conduit 13 through the water inlet hole 1301, which also enables the same water pressure and air pressure to be maintained between each conduit 13, ensuring that each nozzle mechanism 8 remains stable.

[0045] Referring to Figures 4-5 In the embodiment, the spout pipe 14 is provided with a water distribution assembly 15 inside, which includes a fixed disc 16, a fixed rod 17, a sleeve 18, and an impeller blade 19.

[0046] The fixed disc 16 is installed along the circumference and is attached to the inner wall of the pipe mouth of the sharp mouth pipe 14. A plurality of water distribution grooves 1601 are arranged on the fixed disc 16. The water distribution grooves 1601 are used to introduce high pressure water flow into the inside of the sharp mouth pipe 14. The fixed rod 17 is vertically fixed at the bottom of the fixed disc 16. The sleeve pipe 18 is rotatably sleeved on the outer periphery of the fixed rod 17. The impeller blades 19 are arranged on the outer wall of the sleeve pipe 18. The impeller blades 19 have a movement stroke of freely rotating around the fixed rod 17 under the scouring of high pressure water flow. In this way, whether the high pressure gas or high pressure water flow is poured into the sharp mouth pipe 14 from the guide pipe 13, further extrusion and further pressure increase will occur when passing through the water distribution grooves 1601 on the fixed disc 16, so as to improve the impact force of the water medium jet. In this way, under the impact of the water medium, each of the impeller blades 19 will rapidly rotate around the fixed rod 17. Similarly, the water medium in the sharp mouth pipe 14 can be rapidly thrown out in a rotating posture, so as to further increase the diffusion range of the water mist spraying.

[0047] Referring to Figures 4-5 In this embodiment, the blades of the impeller blades 19 have a structure of being wide at the top and narrow at the bottom, thin inside and thick outside. The outer periphery of the blades is close to but not attached to the inner circumferential wall of the sharp mouth pipe 14. In this way, the impeller blades 19 have a sheet structure with uneven thickness. The thickness of the impeller blades 19 gradually increases as gradually moving outward in the radial direction, which helps to increase the thickness of the outlet edge of the impeller blades 19 and to strengthen the wear resistance. The impeller blades 19 are not attached to the inner circumferential wall of the sharp mouth pipe 14 when rotating, which can reduce the resistance and wear. In addition, the impeller blades 19 have a conical table structure when rotating, which can reduce the use cost.

[0048] Referring to Figures 2-3 In this embodiment, the inner pipe 7 is fixedly attached to the inner wall bottom surface of the outer pipe 6. The inner pipe 7 has gaps between the two ends and the top and the outer pipe 6. The inner wall bottom surface of the outer pipe 6 is provided with water seepage holes 601 at the two ends of the inner pipe 7. In this way, the water flow overflowing from the outer pipe 6 to the outside of the flared pipe 12 can flow downward from the water seepage holes 601 at the two ends. The gas circulation in the outer pipe 6 is formed under the blowing of high pressure gas, so as to avoid water accumulation in the outer pipe 6.

[0049] Referring to Figures 1-2 In this embodiment, the dry fog tank assembly 4 further comprises a support hanger 11. The support hanger 11 has at least two support hangers 11 fixed at the two ends of the top of the outer pipe 6 and hung along the outer edge of the bottom of the roof of the warehouse 2. In this way, the installation and dismounting conditions of the dry fog tank assembly 4 become simple and easy to realize.

[0050] Referring to Figure 1 In the embodiment, the warehouse 2 includes a warehouse roof 201 and beam columns 202. The warehouse roof 201 is horizontally located directly above the discharge port 101 and is attached to one side of the wall of the factory building 1. The beam columns 202 are vertically spaced apart and fixed on the two sides of the side of the warehouse roof 201 away from the discharge port 101, forming a hollow space with three open sides and one side connected to the wall of the factory building 1. In this way, a warehouse 2 with three open sides and one side connected to the wall of the factory building 1 is built around the discharge port 101 of the factory building 1. The warehouse 2 forms a pavilion structure connected to the discharge port 101. Therefore, the dry mist dust suppression belt 5 is arranged in a linear structure connected at both ends along the outer edge of the warehouse roof 201 with three open sides of the warehouse 2, improving the flexibility and applicability of the actual assembly of the dry mist dust suppression spraying equipment. The water mist is sprayed downward from the dry mist dust suppression belt 5, forming one or more layers of the mist curtain, which can isolate the inside and outside of the warehouse 2, forming an isolated space composed of multiple mist curtains around the discharge port 101, effectively preventing industrial dust from overflowing.

[0051] Referring to Figure 1 Figure 1 In the embodiment, it also includes:

[0052] The environmental monitoring station 3 is installed on the top of the warehouse 2 and is used to monitor the air quality and weather conditions of the coarse crushing warehouse and the surrounding area in real time.

[0053] The gas storage tank is sealedly connected to the gas inlet pipe joint 9 through a gas delivery pipe and is used to deliver high-pressure gas into the outer pipeline 6.

[0054] The water storage tank is sealedly connected to the water inlet pipe joint 10 through a water delivery pipe and is used to deliver high-pressure water flow into the inner pipeline 7.

[0055] The booster pump includes a booster gas pump and a booster water pump, which are respectively connected to the gas storage tank and the water storage tank, and are used to increase the delivery pressure of the gas flow and the water flow.

[0056] The multi-stage water purification and filtration module is connected between the water storage tank and the inner pipeline 7 and is used to filter and purify the high-pressure water flow.

[0057] The remote control end is wirelessly connected to the environmental monitoring station 3, the gas storage tank, the water storage tank, the booster pump, and the multi-stage water purification and filtration module, and is provided with a DCS interlocking control center and a power distribution control box. The DCS interlocking control center adopts interval control logic and is used to receive and analyze the collected signals fed back by the environmental monitoring station 3 and to control the working state of the dry mist dust suppression belt 5 according to the interval conditions met by the collected signals.

[0058] In this way, the section control logic of the DCS interlocking control center can be preset as follows: when the environmental monitoring station 3 collects PM10 > 150 μg / m 3 in the current air, the dry fog dust suppression spraying equipment in the system automatically starts to work; when the environmental monitoring station 3 collects PM10 ≤ 100 μg / m 3 in the current air, the dry fog dust suppression spraying equipment automatically stops running; when the environmental monitoring station 3 monitors that it is currently raining or snowing, the dry fog dust suppression spraying equipment automatically stops running.

[0059] The DCS interlocking control center in the system analyzes the real-time monitoring dust concentration data in the air fed back by the environmental monitoring station 3, determines the interval range of the concentration, and issues different operation instructions, which include the start-stop control of the gas tank, the water tank, the booster pump and the multi-stage water purification filter module, so that the dust suppression work of the rough crushing warehouse of the slag preparation plant is realized, and the process is automatically performed through DCS interlocking control without human intervention, and intelligent dust suppression is truly realized.

[0060] In summary, in the present application, on the one hand, a warehouse with three open sides and one connected to the wall of the plant is built around the discharge port of the plant, and the warehouse forms a pavilion structure connected to the discharge port. Therefore, a dry fog dust suppression belt is laid along the outer edge of the roof of the three open sides of the warehouse in a linear structure connected head to tail, improving the flexible applicability of the actual assembly of the dry fog dust suppression spraying equipment. The water mist is sprayed out from top to bottom by the dry fog dust suppression belt, forming one or more mist curtains, which can isolate the inside and outside space of the warehouse, so that the entire discharge port forms an isolated space composed of multiple mist curtains, effectively preventing industrial dust from overflowing. On the other hand, the guide pipe is rotatably connected to the bottom of the flared pipe. Whether in the condition of water inlet or air inlet, the high-pressure gas and high-pressure water flow will impact the guide pipe, so that the guide pipe can continuously rotate, and then the water medium in the guide pipe can be thrown out in a rotating posture, increasing the diffusion range of the water mist spraying. At the same time, the high-pressure gas or high-pressure water flow from the guide pipe to the sharp mouth pipe will be further extruded when passing through the water distribution groove on the fixed disc, and then further pressurized, which can improve the jet impact force of the water medium and the breaking degree of the high-pressure gas to the water medium. In this way, under the impact of the water flow and the gas flow, each impeller blade will rotate quickly around the fixed rod, and the water medium in the sharp mouth pipe can be thrown out in a rotating posture quickly, further increasing the diffusion range of the water mist spraying, and effectively suppressing the large-area floating industrial dust.

[0061] It should be understood that the examples and embodiments described herein are only for illustration and are not intended to limit the present application, and those skilled in the art can make various modifications or changes based on it, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A dry fog dust fall system for a copper smelting slag mill, characterized in that: a warehouse (2) is built at the discharge port (101) of the plant (1), the warehouse (2) is open on three sides, one side is connected with the wall of the plant (1) and communicates with the discharge port (101); a dry fog dust suppression belt (5) is arranged around the roof of the three open sides of the warehouse (2), the dry fog dust suppression belt (5) is composed of a plurality of dry fog tank assemblies (4) connected one by one, for spraying dry fog to form a three-sided connected fog curtain, and isolating the discharge port (101) from the outside space; the dry fog tank assembly (4) comprises an outer pipeline (6), an inner pipeline (7), a nozzle mechanism (8), a gas inlet pipe joint (9) and a water inlet pipe joint (10), the inner pipeline (7) is arranged in the outer pipeline (6), the gas inlet pipe joint (9) is connected and fixed to the outer pipeline (6) for high-pressure gas supply to the outer pipeline (6), the water inlet pipe joint (10) penetrates through the outer pipeline (6) and is connected and fixed to the inner pipeline (7) for high-pressure water supply to the inner pipeline (7), and the nozzle mechanism (8) has a plurality of front and rear rows of interval distribution, and each nozzle mechanism (8) penetrates through the inner pipeline (7) and extends outward from the outer pipeline (6) for forming a double-layer fog curtain. The nozzle mechanism (8) comprises a flared pipe (12), a guide pipe (13) and a sharp mouth pipe (14); the flared pipe (12) is installed on the top of the inner pipeline (7), the guide pipe (13) is rotatably connected to the bottom of the flared pipe (12) and vertically penetrates the inside of the inner pipeline (7), and the sharp mouth pipe (14) is fixedly connected to the bottom of the guide pipe (13) and extends downward from the bottom of the inner pipeline (7) and the outer pipeline (6). The flared pipe (12) is centrally provided with a gas inlet (1201) connected to the guide pipe (13) and the sharp mouth pipe (14), the gas inlet (1201) is used for filling the high-pressure gas input by the gas inlet pipe joint (9), the bottom of the flared pipe (12) is provided with an inner tangent ring groove (1202) around the gas inlet (1201), the top pipe wall of the guide pipe (13) is provided with a flange ring (1302), and the flange ring (1302) is rotatably inserted and matched with the inner tangent ring groove (1202).

2. A dry mist dust suppression system for a copper mill rougher bank as claimed in claim 1 characterised in that: A plurality of water inlet holes (1301) are vertically and spaced apart on the guide pipe (13), and the water inlet holes (1301) are used for introducing or flowing out the high-pressure water flow input by the water inlet pipe joint (10). The inside of the sharp mouth pipe (14) is provided with a water distribution assembly (15), and the water distribution assembly (15) comprises a fixed disc (16), a fixed rod (17), a sleeve (18) and a blade (19).

3. A dry mist dust suppression system for a copper mill rougher bank as claimed in claim 2 characterised in that: ​ 4. A dry mist dust suppression system for a copper mill rougher bank as claimed in claim 2 characterised in that: ​ 5. A dry mist dust suppression system for a copper mill rougher bank as claimed in claim 2 characterised in that: ​ The fixed disc (16) is installed along the circumference and is attached to the inner wall of the pipe mouth of the sharp mouth pipe (14), a plurality of water diversion grooves (1601) are arranged on the fixed disc (16) at intervals, the water diversion grooves (1601) are used to introduce high-pressure water flow into the inside of the sharp mouth pipe (14), the fixed rod (17) is vertically fixed at the bottom of the fixed disc (16), the sleeve pipe (18) is rotatably sleeved on the periphery of the fixed rod (17), a plurality of impeller blades (19) are arranged on the outer wall of the sleeve pipe (18) at intervals, and the impeller blades (19) have a movement stroke of freely rotating around the fixed rod (17) under the scouring of high-pressure water flow.

6. A dry mist dust suppression system for a copper mill rougher bank as claimed in claim 5 characterised in that: The blades of the impeller blades (19) have a structure of being wide at the top and narrow at the bottom, thin inside and thick outside, and the outer periphery of the blades is close to but not attached to the inner circumferential wall of the sharp mouth pipe (14).

7. A dry mist dust suppression system for a copper mill rougher bank as claimed in claim 1 characterised in that: The inner pipe (7) is fixedly attached to the inner wall bottom surface of the outer pipe (6), and gaps are left between the two ends and the top of the inner pipe (7) and the outer pipe (6), and water seepage holes (601) are arranged on the inner wall bottom surface of the outer pipe (6) and located at the two ends of the inner pipe (7).

8. A dry mist dust suppression system for a copper mill rougher bank as claimed in claim 1 characterised in that: The dry fog tank assembly (4) further comprises a support hanger (11), the support hanger (11) has at least two, and is fixed at the two ends of the top of the outer pipe (6) and is hung along the outer edge of the bottom of the roof of the warehouse (2).

9. A dry mist dust suppression system for a copper mill rougher bank as claimed in claim 1 characterised in that: The warehouse (2) comprises a warehouse roof (201) and a beam column (202), the warehouse roof (201) is horizontally located directly above the unloading port (101), and one side is attached to the wall of the factory building (1), the beam column (202) has two, and is vertically and spacedly fixed on the two sides of the side of the warehouse roof (201) away from the unloading port (101), forming a hollow space with three open sides and one side connected to the wall of the factory building (1).

10. A dry mist dust suppression system for a copper mill rougher bank as claimed in claim 1 characterised in that: Further comprising: An environmental monitoring station (3) is installed on the top of the warehouse (2) and is used to monitor the air quality and weather conditions of the coarse crushing warehouse and the surrounding area in real time; A gas storage tank is sealingly connected to the gas inlet pipe joint (9) through a gas conveying pipe and is used to convey high-pressure gas into the outer pipe (6); A water storage tank is sealingly connected to the water inlet pipe joint (10) through a water conveying pipe and is used to convey high-pressure water flow into the inner pipe (7); A booster pump comprises a booster gas pump and a booster water pump, which are respectively connected to the gas storage tank and the water storage tank, and are used to increase the conveying pressure of the gas flow and the water flow; A multi-stage water purification and filtration module is connected between the water storage tank and the inner pipe (7) and is used to filter and purify the high-pressure water flow; A remote control end is wirelessly connected to the environmental monitoring station (3), the gas storage tank, the water storage tank, the booster pump and the multi-stage water purification and filtration module, and is provided with a DCS interlocking control center and a power distribution control box, the DCS interlocking control center adopts interval control logic and is used to receive and analyze the collected signals fed back by the environmental monitoring station (3), and simultaneously controls the working state of the dry fog dust suppression belt (5) according to the interval conditions met by the collected signals.

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