Dust falling machine with multi-nozzle structure for mineral exploitation

By designing a dust reducer with a multi-spray structure and water circulation system, the problems of inflexible spray coverage and waste of water resources are solved, all-round dust coverage and efficient water resource utilization are achieved, and the service life of the equipment is extended.

CN120537588APending Publication Date: 2025-08-26QINGHAI HONGXIN MINING CO LTD
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Patent Information

Application Number
CN202510633942.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-16
Publication Date
2025-08-26

AI Technical Summary

Technical Problem

The existing dust-reducing machine has a single spray coverage, making it difficult to dynamically adapt to dust distribution at different heights and orientations, forming a blind spot for dust reduction, low water resource utilization, direct discharge or return of sewage without filtering, easy to block the pipeline, affecting the life of the equipment and wasting water sources.

Method used

A dust reduction machine with its own multi-spray head structure is designed, including a base, water storage tank, water transfer mechanism, main spray mechanism, secondary spray mechanism, water collection bucket and filter mechanism. The main spray head is driven to rotate through a servo motor, and the electric telescopic rod adjusts the angle of the secondary spray head to form a 360° spray coverage. It combines with a multi-layer filtration system to realize water recycling and avoid direct discharge of sewage.

Benefits of technology

It has achieved full coverage of dust at different heights and orientations, improved dust reduction efficiency, reduced water resource consumption, extended equipment life, and reduced operating costs and environmental pollution.

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Abstract

The invention discloses a dust falling machine with a multi-nozzle structure for mineral development, and relates to the technical field of dust falling equipment, the dust falling machine comprises a base, a water storage tank is arranged in the middle of the bottom wall of the base, a water conveying mechanism transversely penetrates through one side of the water storage tank, and a main spraying mechanism is rotatably connected to the inner wall of the top end of the water conveying mechanism; a plurality of auxiliary spraying mechanisms are arranged at the water outlet end of the side edge of the water conveying mechanism, supporting rods are arranged at the four corners of the top end of the base, and a water collecting hopper is arranged at the top ends of the supporting rods. According to the dust falling machine with the multi-nozzle structure for mineral development, the multiple layers of filtering mechanisms are arranged in the water storage tank, the water collecting hopper can accelerate water flow backflow and improve the water circulation efficiency, water circulation of spraying, water collecting, filtering and re-spraying is achieved jointly, water consumption and pollution are reduced, the main spraying mechanism can drive the main nozzle to rotate by 360 degrees, and the dust falling machine is convenient to use. The auxiliary spraying mechanism can adjust the angle of an auxiliary sprayer through an electric telescopic rod, main spraying and auxiliary spraying cooperate to form a three-dimensional spraying network, and dead-corner-free dust falling is achieved.
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Description

Technical Field

[0001] The invention relates to the technical field of dust suppression equipment, in particular to a dust suppression machine with a multi-nozzle structure for mineral development. Background Art

[0002] Mineral development refers to the production activities that extract mineral resources from the Earth's crust through geological exploration, mining, and mineral processing. This includes open-pit and underground mining, requiring the use of various types of machinery to complete processes such as drilling, blasting, and transportation. This process easily generates a large amount of dust that pollutes the working environment. Dust suppressors are commonly used in mineral development to control the spread of dust. Existing common technologies mainly achieve dust reduction through spraying and vacuuming.

[0003] The current dust suppressors have fixed and single spray coverage, and are mostly fixed nozzles. They are difficult to dynamically adapt to dust distribution at different heights and directions, and are prone to forming dust suppression blind spots. In addition, they have low water resource utilization rates and lack efficient water circulation systems. Sprayed sewage is directly discharged or backflows without being filtered, which can easily clog pipes, affect equipment life, and waste water resources. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a dust suppressor with a multi-nozzle structure for mineral development, which solves the problems proposed in the above background technology, such as the fixed single spray coverage, mostly fixed nozzles, difficulty in dynamically adapting to dust distribution at different heights and orientations, easy formation of dust suppression blind spots, low water resource utilization rate, lack of an efficient water circulation system, and direct discharge or backflow of sprayed sewage without filtration, which easily clogs pipes, affects equipment life and wastes water resources.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a dust suppressor with a multi-nozzle structure for mineral development, comprising a base, a water tank is provided in the middle of the bottom wall of the base, a water supply mechanism is horizontally penetrated on one side of the water tank, the top inner wall of the water supply mechanism is rotatably connected to the main spray mechanism, a number of auxiliary spray mechanisms are provided at the side water outlet end of the water supply mechanism, support rods are provided at the four corners of the top of the base, a water collecting bucket is provided at the top of the support rod, and the inner wall of the water tank is slidably connected to the filtering mechanism.

[0006] Further preferably, the water delivery mechanism includes a water pumping pipe, the water pumping end of the water pumping pipe passes horizontally through one side of the water tank, the water outlet end of the water pumping pipe is plugged into the water inlet end of the water pump, the water outlet end of the water pump is plugged into a main water pipe, the top inner wall of the main water pipe is rotatably connected to the main spray mechanism, four branch water pipes are horizontally passed through the upper outer wall of the main water pipe, and the water outlet ends of the four branch water pipes are provided with auxiliary spray mechanisms.

[0007] Further preferably, the four branch water pipes are distributed in a cross shape.

[0008] Further preferably, the main spray mechanism includes a connecting rotating pipe, the bottom end of the connecting rotating pipe vertically penetrates the top inner wall of the main water diversion pipe, the bottom outer wall of the connecting rotating pipe is sleeved with a driven gear, one side of the driven gear is engaged with a driving gear, a rotating rod is inserted into the inside of the driving gear, the bottom end of the rotating rod is inserted with a servo motor, and the top of the connecting rotating pipe is provided with a main spray head.

[0009] Further preferably, a waterproof box is provided on the outside of the servo motor.

[0010] Further preferably, the auxiliary spray mechanism includes four connecting hoses, the water inlet ends of the four connecting hoses are respectively arranged at the water outlet ends of the four branch water pipes, the water outlet ends of the connecting hoses are provided with auxiliary nozzles, the outer wall of the middle section of the connecting hose is sleeved with a connecting ring, the bottom of the connecting ring is provided with an electric telescopic rod, and the bottom end of the electric telescopic rod is provided at the top of the water collecting bucket.

[0011] Further preferably, the water collecting hopper includes a support plate, which is embedded in the top opening of the funnel, and a bottom plate is embedded in the bottom opening of the funnel. Two return water pipes are provided on both sides of the bottom of the bottom plate, and the bottom ends of the two return water pipes are respectively vertically passed through the two sides of the top of the water tank, the top of the support plate is provided with the bottom end of the electric telescopic rod, and the middle of the top of the support plate is vertically penetrated by the main water supply pipe.

[0012] Further preferably, a plurality of water-permeable holes are provided on the surface of the support plate.

[0013] Further preferably, the filtering mechanism includes a fixed frame, a support net is provided on the upper and lower sides of the fixed frame, a first filter layer, a second filter layer and a third filter layer are provided in sequence inside the fixed frame from top to bottom, and the fixed frame is slidably connected to the inner wall of the water tank.

[0014] The present invention provides a dust suppressor with a multi-nozzle structure for use in mineral development, which has the following beneficial effects:

[0015] This dust suppressor with a multi-nozzle structure used for mineral development has a base that provides a stable foundation for the equipment and adapts to the vibration environment of the mine. The water tank is integrated into the bottom of the base. While storing water, it has a built-in multi-layer filtration mechanism, which can purify the recycled sewage layer by layer to form a closed-loop system of "spraying - water collection - filtration - re-spraying". It not only ensures the continuous supply of water for dust suppression, but also reduces the consumption of new water through water circulation, thereby reducing operating costs and environmental pollution.

[0016] This dust suppressor used for mineral development has a multi-nozzle structure. The main spray mechanism drives the gear set through a servo motor to drive the main nozzle to rotate 360°, forming a circular spray area on the top, covering a large area directly above the working surface. The four auxiliary spray mechanisms supply water through cross-shaped water pipes. The electric telescopic rod can adjust the pitch angle of the auxiliary nozzle in real time, and cooperate with the main nozzle to form a three-dimensional spray network with top rotation coverage and multi-directional adjustment on all sides, which suppresses dust at different heights and directions without dead angles, thereby improving dust reduction efficiency.

[0017] This dust suppressor used in mineral development has a multi-nozzle structure. The electric telescopic rod of the auxiliary nozzle mechanism can dynamically adjust the nozzle angle according to the dust concentration. When there is a lot of dust at high places, the electric telescopic rod is extended to make the auxiliary nozzle spray upward to cover the high-altitude area on the side. When the dust on the ground is serious, the electric telescopic rod is shortened to make the auxiliary nozzle spray downward to suppress the dust near the ground. Its elastic connecting hose ensures smooth water flow when the angle is adjusted, realizing precise positioning and dust reduction on demand, and adapting to the scene of variable dust distribution in mineral development.

[0018] This dust suppressor with a multi-nozzle structure used for mineral development has a water collecting hopper support plate that intercepts larger dust particles through water-permeable holes, allowing only water to pass through and preliminarily purifying the falling sewage. Its funnel structure can accelerate the convergence of water flow, which quickly flows back to the water storage tank through the return pipe, reducing water waste. It not only avoids direct dust backflow to block the pipe, but also reduces the burden on the filtering mechanism through physical separation, improves water circulation efficiency, and enables the equipment to operate continuously and stably in a high-dust environment.

[0019] This dust suppressor used for mineral development has a multi-nozzle structure. The waterproof box on the outside of the servo motor effectively isolates water vapor and dust, ensuring long-term operation of the motor in humid and dusty environments. The filtering mechanism adopts a sliding fixed frame design, and the three-layer filter layer can be removed and cleaned regularly, which is simple to maintain. The combined structure of the connecting hose and the electric telescopic rod is flexible and resistant to bending, which reduces mechanical loss, extends the service life of the overall equipment, and reduces the maintenance frequency and labor costs of mining equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the invention;

[0021] Figure 2 It is a side cross-sectional schematic diagram of the invention;

[0022] Figure 3 It is a schematic diagram of the water collecting bucket in the invention;

[0023] Figure 4 It is a schematic diagram of the water delivery mechanism in the invention;

[0024] Figure 5 It is a schematic diagram of the auxiliary spray mechanism in the invention;

[0025] Figure 6It is a schematic diagram of the main spray mechanism in the invention;

[0026] Figure 7 It is a schematic diagram of the filtering mechanism in the invention.

[0027] In the figure: 1. Base; 2. Water storage tank; 3. Water delivery mechanism; 301. Water suction pipe; 302. Water pump; 303. Main water diversion pipe; 304. Branch water diversion pipe; 4. Main spray mechanism; 401. Connecting rotating pipe; 402. Driven gear; 403. Driving gear; 404. Rotating rod; 405. Servo motor; 406. Main nozzle; 5. Auxiliary spray mechanism; 501. Connecting hose; 502. Auxiliary nozzle; 503. Connecting collar; 504. Electric telescopic rod; 6. Support rod; 7. Water collecting bucket; 701. Support plate; 702. Funnel; 703. Bottom plate; 704. Return pipe; 8. Filter mechanism; 801. Fixing frame; 802. Support net; 803. First filter layer; 804. Second filter layer; 805. Third filter layer. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0031] See also Figures 1 to 7The present invention provides a technical solution: a dust suppressor with a multi-nozzle structure for mineral development, comprising a base 1, a water tank 2 is provided in the middle of the bottom wall of the base 1, a water supply mechanism 3 is horizontally penetrated on one side of the water tank 2, a main spray mechanism 4 is rotatably connected to the inner wall of the top of the water supply mechanism 3, a plurality of auxiliary spray mechanisms 5 are provided at the side water outlet end of the water supply mechanism 3, support rods 6 are provided at the four corners of the top of the base 1, a water collecting bucket 7 is provided at the top of the support rod 6, and a filtering mechanism 8 is slidably connected to the inner wall of the water tank 2.

[0032] In this embodiment, Figure 1 and Figure 2 and Figure 4 As shown, the water delivery mechanism 3 includes a water pumping pipe 301, the water pumping end of the water pumping pipe 301 passes horizontally through one side of the water storage tank 2, the water outlet end of the water pumping pipe 301 is plugged into the water inlet end of the water pump 302, the water outlet end of the water pump 302 is plugged into the main water supply pipe 303, the top inner wall of the main water supply pipe 303 is rotatably connected to the main spray mechanism 4, the upper end outer wall of the main water supply pipe 303 is horizontally penetrated by four branch water supply pipes 304, and the water outlet ends of the four branch water supply pipes 304 are provided with auxiliary spray mechanisms 5.

[0033] In this embodiment, Figure 1 and Figure 2 and Figure 4 As shown, the four branch water pipes 304 are distributed in a cross shape.

[0034] In this embodiment, Figure 4 and Figure 6 As shown, the main spray mechanism 4 includes a connecting rotating pipe 401, the bottom end of the connecting rotating pipe 401 vertically penetrates the top inner wall of the main water supply pipe 303, the bottom outer wall of the connecting rotating pipe 401 is sleeved with a driven gear 402, one side of the driven gear 402 is engaged with a driving gear 403, the inside of the driving gear 403 is plugged with a rotating rod 404, the bottom end of the rotating rod 404 is plugged with a servo motor 405, and the top of the connecting rotating pipe 401 is provided with a main spray head 406.

[0035] In this embodiment, Figure 6 As shown, a waterproof box is provided on the outside of the servo motor 405.

[0036] In this embodiment, Figure 4 and Figure 5 As shown, the auxiliary spray mechanism 5 includes four connecting hoses 501, the water inlet ends of the four connecting hoses 501 are respectively arranged at the water outlet ends of the four branch water pipes 304, the water outlet ends of the connecting hoses 501 are provided with auxiliary nozzles 502, the outer wall of the middle section of the connecting hose 501 is sleeved with a connecting ring 503, the bottom of the connecting ring 503 is provided with an electric telescopic rod 504, and the bottom end of the electric telescopic rod 504 is arranged at the top of the water collecting bucket 7.

[0037] In this embodiment, Figure 3As shown, the water collecting bucket 7 includes a support plate 701, which is embedded in the top opening of the funnel 702, and a bottom plate 703 is embedded in the bottom opening of the funnel 702. Two return water pipes 704 are provided on both sides of the bottom of the bottom plate 703. The bottom ends of the two return water pipes 704 are respectively vertically passed through the two sides of the top of the water tank 2. The top of the support plate 701 is provided with the bottom end of the electric telescopic rod 504, and the middle of the top of the support plate 701 is vertically penetrated by the main water supply pipe 303.

[0038] In this embodiment, Figure 3 As shown, a plurality of water-permeable holes are provided on the surface of the support plate 701 .

[0039] In this embodiment, Figure 7 As shown, the filtering mechanism 8 includes a fixed frame 801, and a support net 802 is provided on the upper and lower sides of the fixed frame 801. The interior of the fixed frame 801 is provided with a first filter layer 803, a second filter layer 804 and a third filter layer 805 from top to bottom. The fixed frame 801 is slidably connected to the inner wall of the water tank 2.

[0040] The dust suppressor with a multi-nozzle structure used for mineral development works as follows:

[0041] like Figures 1 to 7 As shown, the operator can first move the entire device to the designated location. During this period, the base 1 can stably support the entire device, and the filtering mechanism 8 in the water tank 2 in the middle of its bottom wall is waiting to filter the return sewage. At this time, the operator can start the water pump 302 of the water delivery mechanism 3 to start its operation, and extract the preliminarily filtered clean water from the inside of the water tank 2 through the water pump pipe 301 plugged therein. After the water flow is pressurized by the water pump 302, it will be transported vertically upward along the main water pipe 303. When the water flow passes through the four branch water pipes 304 distributed in a cross shape on the outer wall of the upper end of the main water pipe 303, it will be diverted synchronously. At this time, the water flow is evenly guided to the water inlet end of the connecting hose 501 of the four auxiliary spray mechanisms 5.

[0042] At the same time, the operator can start the servo motor 405 to drive the rotating rod 404 connected to it to rotate, so that the driving gear 403 connected to the top of the rotating rod 404 can be driven to rotate together. Because the driving gear 403 is engaged with the driven gear 402 on one side through teeth, in Chongqing Qijiang, it will rotate synchronously with the driven gear 402 and the connecting rotating pipe 401 connected to the inner wall of the driven gear 402, so that the main nozzle 406 provided on the top of the connecting rotating pipe 401 can draw a circular spray area with a diameter of 2 meters, and its water mist will spread in a fan shape to the surroundings, thereby covering the top of the mining operation surface.

[0043] At the same time, the operator can simultaneously start the electric telescopic rod 504 in four directions to make its driving end extend and retract together, and during this period, the auxiliary nozzle 502 connected to the middle section of the connecting hose 501 through the connecting ring 503 will also change its angle together. When it is necessary to increase the spraying, the operator can control the driving end of the electric telescopic rod 504 to extend, during which the connecting ring 503 will pull the connecting hose 501 upward, so that the auxiliary nozzle 502 can gradually rise from a horizontal state to 45 degrees. Due to the elastic material of the connecting hose 501, Ensure that the water flow from the branch water pipe 304 continues to pass stably and is sprayed out in a columnar shape through the auxiliary nozzle 502 to cover the dust at the high side of the working surface. When it is necessary to lower the spraying angle, the operator can control the driving end of the electric telescopic rod 504 to retract, thereby driving the auxiliary nozzle 502 to droop downward to 30°, so that the water flow falls in an umbrella shape to suppress the dust raised from the ground. During the spraying process, the four auxiliary nozzles 502 face four different directions respectively, and cooperate with the main nozzle 406 to form a three-dimensional dust reduction network with top rotating spray and multi-directional adjustment on all sides.

[0044] After the spraying, the water mist will fall back due to gravity after absorbing the dust, and drip onto the support plate 701 at the top of the water collecting bucket 7. During this period, the water flow mixed with the dust will pass through the water-permeable holes opened on the surface of the support plate 701 and fall downward into the interior of the funnel 702. The water flow will accelerate along the slope of the funnel 702 and converge to the bottom plate 703. Under the action of gravity, it will flow back to the water storage tank 2 along the return pipe 704 on both sides of the bottom plate 703. At this time, the return sewage in the water storage tank 2 will first flow through The filter mechanism 8 is connected to the first filter layer 803, the second filter layer 804 and the third filter layer 805 inside it in sequence. During this process, the coarse filter mesh of the first filter layer 803 will intercept the sand and gravel in the water, while the medium-density filter material of the second filter layer 804 will remove the coal dust particles in the water. Finally, the suspended matter in the water is adsorbed by the precision filter cloth of the third filter layer 805. The cleaned water will continue to flow downward and be stored at the bottom of the water storage tank 2 for the water pump 302 to extract again.

[0045] During the entire operation, the support rods 6 at the four corners of the top of the base 1 will firmly support the water collecting bucket 7, keeping it at a vertical distance from the base 1, ensuring a smooth return path for the spray. Through the coordination of mechanical transmission, fluid mechanics and filtration principles, the various components realize water flow circulation, effectively reducing the concentration of inhalable dust in mineral development scenarios.

[0046] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A dust suppressor with a multi-nozzle structure for use in mineral development, comprising a base (1), characterized in that: A water storage tank (2) is provided in the middle of the bottom wall of the base (1), a water delivery mechanism (3) is horizontally passed through one side of the water storage tank (2), a main spray mechanism (4) is rotatably connected to the inner wall of the top end of the water delivery mechanism (3), a plurality of auxiliary spray mechanisms (5) are provided at the side water outlet end of the water delivery mechanism (3), support rods (6) are provided at the four corners of the top end of the base (1), a water collecting bucket (7) is provided at the top end of the support rod (6), and a filtering mechanism (8) is slidably connected to the inner wall of the water storage tank (2).

2. The dust suppressor with a multi-nozzle structure for mineral development according to claim 1, characterized in that: The water delivery mechanism (3) comprises a water pumping pipe (301), the water pumping end of the water pumping pipe (301) is horizontally passed through one side of the water storage tank (2), the water outlet end of the water pumping pipe (301) is plugged into the water inlet end of the water pump (302), the water outlet end of the water pump (302) is plugged into a main water supply pipe (303), the top inner wall of the main water supply pipe (303) is rotatably connected to a main spray mechanism (4), the upper outer wall of the main water supply pipe (303) is horizontally passed through four branch water supply pipes (304), and the water outlet ends of the four branch water supply pipes (304) are provided with auxiliary spray mechanisms (5).

3. The dust suppressor with a multi-nozzle structure for mineral development according to claim 2, characterized in that: The four branch water pipes (304) are distributed in a cross shape.

4. The dust suppressor with a multi-nozzle structure for mineral development according to claim 2, characterized in that: The main spray mechanism (4) comprises a connecting rotating pipe (401), the bottom end of the connecting rotating pipe (401) vertically penetrates the inner wall of the top end of the main water diversion pipe (303), the outer wall of the bottom end of the connecting rotating pipe (401) is sleeved with a driven gear (402), one side of the driven gear (402) is meshed with a driving gear (403), a rotating rod (404) is inserted into the interior of the driving gear (403), the bottom end of the rotating rod (404) is inserted with a servo motor (405), and the top end of the connecting rotating pipe (401) is provided with a main spray head (406).

5. The dust suppressor with a multi-nozzle structure for mineral development according to claim 4, characterized in that: A waterproof box is provided on the outside of the servo motor (405).

6. The dust suppressor with a multi-nozzle structure for mineral development according to claim 2, characterized in that: The auxiliary spray mechanism (5) comprises four connecting hoses (501), the water inlet ends of the four connecting hoses (501) are respectively arranged at the water outlet ends of four branch water pipes (304), the water outlet ends of the connecting hoses (501) are provided with auxiliary spray heads (502), the outer wall of the middle section of the connecting hose (501) is sleeved with a connecting ring (503), the bottom of the connecting ring (503) is provided with an electric telescopic rod (504), and the bottom end of the electric telescopic rod (504) is arranged at the top of the water collecting bucket (7).

7. The dust suppressor with a multi-nozzle structure for mineral development according to claim 2, characterized in that: The water collecting hopper (7) comprises a support plate (701), the support plate (701) is embedded in the top opening of the funnel (702), a bottom plate (703) is embedded in the bottom opening of the funnel (702), two return water pipes (704) are provided on both sides of the bottom of the bottom plate (703), the bottom ends of the two return water pipes (704) respectively pass vertically through the top two sides of the water storage tank (2), the top of the support plate (701) is provided with the bottom end of the electric telescopic rod (504), and the middle part of the top of the support plate (701) is vertically penetrated by the main water supply pipe (303).

8. The dust suppressor with a multi-nozzle structure for mineral development according to claim 8, characterized in that: The surface of the support plate (701) is provided with a plurality of water-permeable holes.

9. The dust suppressor with a multi-nozzle structure for mineral development according to claim 1, characterized in that: The filtering mechanism (8) comprises a fixed frame (801), wherein support nets (802) are provided on the upper and lower sides of the fixed frame (801), and a first filter layer (803), a second filter layer (804) and a third filter layer (805) are sequentially provided inside the fixed frame (801) from top to bottom, and the fixed frame (801) is slidably connected to the inner wall of the water storage tank (2).

Citation Information

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