Dedusting water cannon for coal mining and processing

Abstract

The invention provides a dust removal water cannon for coal mining and processing. The dust removal water cannon comprises a dust removal moving trolley; the dust removal liquid storage conveying mechanism is fixedly mounted on the inner side of the dust removal moving trolley, and the dust removal liquid storage conveying mechanism is electrically connected with the control case through a connecting wire; the positioning lifting mechanism is fixed to the front end of the dust removal liquid storage conveying mechanism, and the positioning lifting mechanism is electrically connected with the control case through a connecting line; according to the dedusting water cannon for coal mining and processing, a dripping liquid collecting frame of the dripping liquid collecting mechanism is used for receiving dripping liquid at a cannon muzzle, a high-low collecting cavity guides the liquid to flow into a recycling frame through a recycling pipeline, and the rotating dedusting cannon barrel is movably mounted on the inner side of the upper end of the positioning lifting mechanism; the problem that an existing device wastes water resources is solved, cyclic utilization of the water resources is achieved, and the use cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of dust control equipment for coal mining, specifically a dust removal water cannon for coal mining and processing. Background Technology

[0002] Coal mines are areas where humans extract coal resources in coal-rich areas. They are generally divided into underground coal mines and open-pit coal mines. Coal mining produces dust, and dust control measures are needed to protect the environment. Dust control measures are achieved by using water cannons for coal mining and processing.

[0003] Existing Chinese patent CN220736853U discloses a dust suppression water cannon, relating to the field of dust suppression technology. It includes a base; a water tank fixed to the top of the base; a connecting seat fixed to the top of the water tank; a hinge seat fixed to the top of the connecting seat; an adjusting seat rotatably connected to the hinge seat; an adjusting mechanism located at the top of the adjusting seat for left and right adjustment of the dust suppression position; a water cannon shell located above the adjusting mechanism, with openings at both ends; a flexible hose fixedly connected to one side of the water tank and one side of the water cannon shell; a connecting pipe fixed to the inner wall of the water cannon shell, one end of which is fixedly connected to the flexible hose; and multiple atomizing nozzles fixedly connected to the connecting pipe.

[0004] However, in actual use, water will accumulate and drip below the nozzle of the aforementioned dust suppression water cannon. Existing dust suppression water cannons lack a suitable water collection structure or mechanism. This technical defect not only causes unnecessary waste of water resources, but also easily pollutes the surrounding working environment. It may even affect the normal operation of surrounding equipment or the operational safety of workers due to the dripping water. Summary of the Invention

[0005] This application aims to address the problem that existing dust suppression water cannons, in actual use, cause water to accumulate and drip below the nozzle, and that existing dust suppression water cannons lack a suitable water collection structure or mechanism. The application provides a dust suppression water cannon for coal mining and processing, including a dust suppression mobile trolley, a dust suppression liquid conveying mechanism, a positioning and lifting mechanism, a rotating dust suppression cannon barrel, and a drip liquid collection mechanism. The dust removal liquid conveying mechanism is fixedly installed on the dust removal mobile trolley; The positioning and lifting mechanism is fixedly installed at the upper front end of the dust removal liquid conveying mechanism; The rotary dust removal cannon is movably installed on the upper inner side of the positioning and lifting mechanism, and the liquid inlet of the rotary dust removal cannon is connected to the liquid outlet of the dust removal liquid storage and conveying mechanism. The dripping liquid collection mechanism is fixedly installed on the positioning and lifting mechanism, and the dripping liquid collection mechanism is located directly below the muzzle of the rotating dust removal barrel. The liquid outlet of the dripping liquid collection mechanism is connected to the liquid storage cavity of the dust removal liquid storage and conveying mechanism.

[0006] In one feasible implementation, the dust removal mobile trolley is a trolley frame, the lower end of which is rotatably equipped with a swivel caster wheel with brakes, and the rear end of the trolley frame is fixed with a push handle; The dust removal and liquid storage conveying mechanism is fixedly installed within the accommodating space enclosed by the inner side of the trolley frame.

[0007] In one feasible implementation, the dust removal liquid conveying mechanism includes a liquid storage tank, an extraction and conveying pipe, a conveying water pump, and a corrugated telescopic pipe. The liquid storage tank is fixedly installed on the dust removal mobile trolley. The upper end face of the liquid storage tank is provided with a liquid inlet, and a tank cover is threadedly connected to the liquid inlet. One end of the extraction and delivery pipe penetrates the side wall of the liquid storage tank and extends to the bottom of the inner cavity of the liquid storage tank, while the other end of the extraction and delivery pipe is fixedly connected to the inlet end of the delivery water pump. The water pump is fixedly installed on the front outer wall of the liquid storage tank. The outlet end of the water pump is fixedly connected to one end of the corrugated expansion tube, and the other end of the corrugated expansion tube is fixedly connected to the inlet end of the rotary dust removal barrel.

[0008] In one feasible implementation, the positioning and lifting mechanism includes a positioning frame, two electric telescopic cylinders, two positioning sleeves, and a concave frame. The positioning and placement frame is fixedly connected to the upper part of the front end face of the liquid storage tank; The two electric telescopic cylinders are symmetrically fixedly installed on the inner side of the upper end face of the positioning frame. The telescopic ends of the two electric telescopic cylinders are both vertically upward, and the two electric telescopic cylinders are synchronized through a synchronizer. The upper surface of the positioning frame has two positioning sleeve holes, which are symmetrically distributed on the outside of the two electric telescopic cylinders. The two positioning sleeves are respectively fitted into the inner side of the two positioning sleeve holes, and the positioning sleeves can slide up and down along the axial direction of the positioning sleeve holes. The concave frame is fixedly connected to the upper end face of the two positioning sleeves, and the lower end face of the concave frame is fixedly connected to the telescopic ends of the two electric telescopic cylinders. The rotating dust removal barrel is movably installed on the inner side of the upper end of the concave frame.

[0009] In one feasible implementation, the rotary dust removal cannon includes a hollow cannon, two rotating shafts, a rotary motor, a fan, and a spray annular perforated plate; The two rotating shafts are symmetrically fixedly connected to the outer walls of both sides of the hollow barrel, and the hollow barrel is rotatably mounted between the two side walls of the concave frame via the two rotating shafts. The rotary motor is fixedly installed on the outer wall of the concave frame, and the output shaft of the rotary motor is fixedly connected to the rotating shaft on the same side through a coupling; The fan and the spray annular perforated plate are both fixedly installed in the inner cavity of the hollow barrel, and the spray annular perforated plate is located at the air outlet of the fan. The spray annular perforated plate has evenly distributed through mesh holes on its body. The hollow barrel has a liquid inlet at its rear end, and the liquid inlet is fixedly connected to the end of the corrugated telescopic pipe away from the water pump.

[0010] In one feasible implementation, the front end of the hollow barrel is provided with an annular groove, and the spray annular perforated plate is fixedly snapped into the annular groove.

[0011] In one feasible implementation, the drip collection mechanism includes a drip collection frame, a recovery pipe, a recovery frame, and a filter screen. The drip collection frame is fixedly connected above the positioning and placement frame, and the drip collection frame is located directly below the front muzzle of the hollow barrel; The upper surface of the drip collection frame is provided with a high and low collection chamber. The bottom of the high and low collection chamber is inclined in the horizontal direction. The inlet end of the recovery pipe is fixedly connected to the position on the drip collection frame corresponding to the lowest point of the bottom of the high and low collection chamber. The outlet end of the recovery pipe is fixedly connected to the inlet end of the recovery frame. The recovery frame is fixedly installed on the side wall of the liquid storage tank, and the inner cavity of the recovery frame is connected to the inner cavity of the liquid storage tank. The filter screen is fixedly installed on the inner side of the liquid outlet end of the recovery frame, and the filter screen has evenly distributed filter holes on its body.

[0012] In one feasible implementation, an inspection port is provided on the side wall of the recovery frame away from the liquid storage tank, and an inspection cover is fixedly installed at the inspection port by screws, with a gap between the inspection cover and the filter screen for liquid flow.

[0013] In one feasible implementation, the recovery frame is a hollow cavity structure with both ends open. The liquid outlet end of the recovery frame penetrates the side wall of the liquid storage tank and extends into the inner cavity of the liquid storage tank. The outer wall of the recovery frame is sealed and fixedly connected to the side wall of the liquid storage tank.

[0014] In one feasible implementation, the outer dimensions of the positioning sleeve plate are adapted to the inner diameter of the positioning sleeve hole, and the outer wall of the positioning sleeve plate slides against the inner wall of the positioning sleeve hole. Both of the electric telescopic cylinders are electrically connected to an external control box, and the synchronizer is integrated inside the control box.

[0015] The dust suppression water cannon for coal mining and processing provided in this application has the following beneficial effects: 1. The drip collection frame of the drip collection mechanism collects the dripping liquid from the gun muzzle. The high and low collection chambers guide the liquid through the recovery pipe into the recovery frame. After the filter screen filters out impurities, the liquid flows back to the storage tank, which solves the problem of water waste in existing devices, realizes water recycling, and reduces operating costs.

[0016] 2. The drip collection mechanism avoids drip accumulation and pollution of the working environment, prevents drips from affecting the operation of surrounding equipment and the safety of personnel, solves the environmental and safety hazards of existing devices, and improves the cleanliness and safety of the working environment. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the implementation of the invention and, together with the description, serve to explain the principles of the embodiments of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a dust removal water cannon for coal mining and processing, as shown in an exemplary embodiment of this application. Figure 2 This is a three-dimensional structural schematic diagram of a dust removal water cannon for coal mining and processing to remove hollow barrels, as shown in an exemplary embodiment of this application. Figure 3 This is a schematic diagram of the combined structure of the positioning lifting mechanism and the rotating dust removal barrel, as shown in an exemplary embodiment of this application. Figure 4 This is a three-dimensional structural schematic diagram of a rotary dust removal barrel shown in an exemplary embodiment of this application; Figure 5 This is a schematic diagram of a drip collection mechanism shown in an exemplary embodiment of this application.

[0019] Attached image captions: 1-Cart frame; 11-Rotating casters; 12-Push handle; 13-Water tank cover; 14-Extraction and delivery pipe; 2-Liquid storage tank; 3-Positioning frame; 31-Electric telescopic cylinder; 32-Positioning sleeve hole; 4-Drip collection frame; 41-High and low collection chambers; 42-Recovery pipe; 43-Recovery frame; 44-Filter screen; 45-Inspection cover; 5-Hollow barrel; 51-Spraying ring-shaped perforated plate; 52-Rotating shaft; 53-Fan; 6-Rotating motor; 61-Positioning sleeve; 62-Concave frame; 7-Water pump; 71-Corrugated telescopic pipe. Detailed Implementation

[0020] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the embodiments of the invention will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a full understanding of how embodiments of the invention are carried out.

[0021] This application provides a dust suppression water cannon for coal mining and processing, referring to... Figure 1 and Figure 2 As shown, it includes a dust removal mobile trolley 1, a dust removal liquid conveying mechanism, a positioning and lifting mechanism, a rotating dust removal cannon, and a dripping liquid collection mechanism.

[0022] The dust removal liquid storage and conveying mechanism is fixedly installed on the dust removal mobile trolley 1 to store the dust removal liquid and provide conveying power. The positioning and lifting mechanism is further fixedly installed on the upper front end of the dust removal liquid storage and conveying mechanism, and its function is to support and adjust the height of the spraying unit.

[0023] The rotary dust removal cannon is rotatably mounted on the upper inner side of the positioning and lifting mechanism. Its inlet end is connected to the outlet end of the dust removal liquid storage and conveying mechanism to receive liquid and perform spray dust removal. The dripping liquid collection mechanism is fixedly mounted on the positioning and lifting mechanism, and its spatial position is clearly defined directly below the muzzle of the rotary dust removal cannon. The outlet end of this mechanism is connected to the liquid storage cavity of the dust removal liquid storage and conveying mechanism to receive and recover the liquid dripping from the muzzle.

[0024] In use, the dust removal mobile trolley 1 can move the entire set of equipment to the dust-generating area of ​​coal mining. During operation, the dust removal liquid storage and conveying mechanism pumps the stored liquid to the rotating dust removal cannon, and the liquid is atomized and sprayed out after passing through the cannon to achieve dust removal.

[0025] During this process, any liquid that is not fully atomized or remains inside the barrel will accumulate and drip at the muzzle. At this point, the drip collection mechanism located directly below the muzzle comes into play, effectively catching these drips and preventing them from directly spilling onto the work surface and causing pollution or safety hazards. The collected liquid then flows back through pipelines to the storage chamber of the dust removal and liquid conveying mechanism, thus achieving internal circulation of water resources.

[0026] The dust suppression water cannon for coal mining and processing disclosed in this application addresses the problems of water waste and environmental pollution caused by the inability to collect dripping liquid from the nozzle during operation, which are common with existing dust suppression water cannons. The mobile dust suppression trolley 1 provides mobility, the dust suppression liquid storage and conveying mechanism is responsible for liquid storage and supply, the positioning and lifting mechanism allows for adjustment of the spray height to adapt to different dust sources, the rotating dust suppression cannon barrel performs multi-angle spraying, and the dripping liquid collection mechanism ensures resource recovery and environmental cleanliness. All components work together to form a mobile, adjustable, and recyclable dust suppression system.

[0027] In some embodiments of this application, the dust removal mobile trolley 1 is specifically a trolley frame. The trolley frame forms the main support frame of the equipment. Braked casters 11 are rotatably mounted at the lower end of the trolley frame. The braked casters 11 allow the equipment to turn flexibly and lock upon reaching the target working position via a braking function to prevent accidental movement during operation. For ease of pushing by the operator, a push handle 12 is fixed at the rear end of the trolley frame.

[0028] Furthermore, the dust removal and liquid storage conveying mechanism is fixedly installed within the accommodating space enclosed by the inner side of the trolley frame. This built-in installation method provides structural protection for the dust removal and liquid storage conveying mechanism from external collisions during movement or in complex operating environments, while also making the overall structure of the equipment more compact and the center of gravity more stable.

[0029] The operator can easily move the entire dust suppression water cannon to the required dust suppression point underground by holding the push handle 12 and utilizing the flexibility of the braked swivel casters 11. Once in position, depressing the brakes on the swivel casters 11 will stably fix the trolley frame to the ground. The dust suppression liquid conveying mechanism is built into the trolley frame, saving external space and allowing for a more organized and protected layout of the liquid conveying pipeline. This design solves the problems of difficulty in moving the equipment in uneven roadways and instability after positioning.

[0030] In some embodiments of this application, the dust removal liquid conveying mechanism includes a liquid storage tank 2, an extraction and conveying pipe 14, a conveying water pump 7, and a corrugated telescopic pipe 71.

[0031] The liquid storage tank 2, serving as a liquid storage container, is fixedly installed on the frame of the dust removal mobile trolley 1. An inlet for adding liquid and observation is provided on the upper surface of the liquid storage tank 2. A tank cover 13 is threadedly connected to this inlet; the threaded connection ensures reliable sealing and facilitates opening and closing.

[0032] The extraction and delivery pipe 14 is used to extract liquid from the liquid storage tank 2. One end of the pipe penetrates the side wall of the liquid storage tank 2 and extends to the bottom of the inner cavity of the liquid storage tank 2 to ensure that the liquid at the bottom of the tank can be effectively extracted and to avoid liquid residue. The other end of the pipe is fixedly connected to the inlet end of the delivery pump 7.

[0033] The water pump 7 is fixedly installed on the front outer wall of the liquid storage tank 2. The outlet end of the water pump 7 is fixedly connected to one end of the corrugated expansion tube 71, while the other end of the corrugated expansion tube 71 is fixedly connected to the inlet end of the rotary dust removal barrel. The expansion and contraction characteristics of the corrugated expansion tube 71 enable it to adapt to the position changes of the rotary dust removal barrel during lifting and rotation, avoiding interference or damage caused by rigid connection.

[0034] Understandably, the dust removal liquid conveying mechanism provides a continuous and controllable water supply for the entire system. Specifically, the operator can open the water tank cover 13 to add clean water or dust removal liquid to the liquid storage tank 2. After starting the conveying water pump 7, liquid is drawn from the bottom of the inner cavity of the liquid storage tank 2 through the extraction conveying pipe 14. The extracted liquid, driven by the pressure of the conveying water pump 7, enters the corrugated expansion pipe 71 and is finally conveyed to the liquid inlet end of the rotary dust removal cannon through the corrugated expansion pipe 71, providing raw materials for atomized dust removal. Moreover, when the positioning lifting mechanism adjusts the height of the rotary dust removal cannon or the rotation angle of the rotary dust removal cannon itself, the corrugated expansion pipe 71 can extend and deform accordingly, always keeping the liquid passage unobstructed, without restricting or hindering the movement of the cannon.

[0035] In some embodiments of this application, reference is made to Figure 3 As shown, the positioning and lifting mechanism includes a positioning frame 3, two electric telescopic cylinders 31, two positioning sleeves 61, and a concave frame 62. The lower end of the positioning frame 3 is fixedly connected to the upper part of the front end face of the liquid storage tank 2, thereby obtaining stable support. The two electric telescopic cylinders 31 serve as lifting drive elements and are symmetrically fixedly installed on the inner side of the upper end face of the positioning frame 3, with their telescopic ends both set vertically upward.

[0036] In some embodiments, to achieve smooth lifting and lowering, the two electric telescopic cylinders 31 are synchronized through a synchronizer, which is typically integrated into an external control cabinet. Two positioning sleeve holes 32 are formed on the upper surface of the positioning frame 3, corresponding to the outer positions of the two electric telescopic cylinders 31. Two positioning sleeve plates 61 are respectively fitted into the inner sides of these two positioning sleeve holes 32.

[0037] Furthermore, the outer dimensions of the positioning sleeve 61 can be adapted to the inner diameter of the positioning sleeve hole 32, allowing the outer wall of the positioning sleeve 61 to slide against the inner wall of the positioning sleeve hole 32. This enables the positioning sleeve 61 to slide up and down along the axial direction of the positioning sleeve hole 32, i.e., the vertical direction. The concave frame 62 serves as the mounting platform for the rotary dust collector, with its lower end face fixedly connected to the upper end face of the two positioning sleeves 61. Simultaneously, the lower end face of the concave frame 62 is also fixedly connected to the telescopic ends of the two electric telescopic cylinders 31. The rotary dust collector is ultimately movably mounted on the inner side of the upper end of this concave frame 62.

[0038] During equipment operation, the positioning and lifting mechanism is responsible for precisely adjusting the spray height of the rotating dust suppression cannon. When dust suppression is required for dust points at different heights, the control box sends synchronous extension and retraction commands to the two electric telescopic cylinders 31. The extension and retraction ends of the electric telescopic cylinders 31 move upward or downward, directly driving the concave frame 62 fixedly connected to them to move synchronously.

[0039] Since the concave frame 62 is fitted with the positioning sleeve hole 32 on the positioning placement frame 3 through the positioning sleeve plate 61, the up and down sliding of the positioning sleeve plate 61 within the positioning sleeve hole 32 provides precise vertical guidance for the movement of the concave frame 62, effectively preventing horizontal deviation or swaying during the lifting process. The lifting movement of the concave frame 62 then drives the rotating dust removal cylinder installed on it to rise or fall as a whole.

[0040] The positioning and lifting mechanism provided in this embodiment is powered by an electric telescopic cylinder 31, and guides and prevents deflection through the cooperation of the positioning sleeve plate 61 and the positioning sleeve hole 32, ensuring the stability and accuracy of the lifting process. This solves the problem of low dust capture efficiency at high or low locations caused by the inability to adjust the spray height of the dust suppression water cannon. The synchronizer ensures the synchronicity of the lifting on both sides, preventing the cannon barrel from tilting during the lifting process.

[0041] In some embodiments of this application, reference is made to Figure 3 and Figure 4 As shown, the rotary dust collector includes a hollow tube 5, two rotating shafts 52, a rotary motor 6, a fan 53, and a spray annular perforated plate 51. The hollow tube 5 constitutes the main outer shell of the tube. The two rotating shafts 52 are symmetrically fixedly connected to the outer walls on both sides of the hollow tube 5. Through these two rotating shafts 52, the hollow tube 5 is rotatably mounted between the two side walls of the concave frame 62, forming a support structure.

[0042] The rotary motor 6 is fixedly installed on the outer wall of the concave frame 62, and its output shaft is fixedly connected to the rotating shaft 52 on the same side through a coupling, thereby providing driving force for the rotation of the gun barrel.

[0043] Inside the hollow barrel 5, a fan 53 and a spray annular perforated plate 51 are fixedly installed. The spray annular perforated plate 51 is installed in front of the air outlet of the fan 53. The spray annular perforated plate 51 has evenly distributed through-holes, which are used to cut and atomize the flowing liquid. A liquid inlet is provided at the rear end of the hollow barrel 5. This liquid inlet is fixedly connected to the end of the corrugated telescopic pipe 71 away from the water pump 7, and is used to receive liquid from the dust removal and liquid storage conveying mechanism.

[0044] During dust removal operations, liquid from the corrugated expansion tube 71 enters the interior of the hollow barrel 5 through the inlet at the rear end and flows towards the spray annular perforated plate 51. As the liquid passes through the dense mesh on the spray annular perforated plate 51, it is dispersed into fine droplets under pressure. Simultaneously, the fan 53 starts, generating a high-speed airflow that blows towards the spray annular perforated plate 51. This airflow further tears and accelerates these droplets, spraying them towards the target area ahead, forming a misted water curtain covering a certain area, thereby capturing and settling dust in the air.

[0045] Furthermore, when it is necessary to change the spray direction to cover a wider area, the rotary motor 6 is activated, driving the rotating shaft 52 to rotate via the coupling. This, in turn, causes the entire hollow barrel 5 to rotate around the axis of the rotating shaft 52 within the concave frame 62, thereby achieving horizontal adjustment of the spray angle. This embodiment combines liquid atomization with wind-assisted propulsion. Atomization is achieved through the spray annular perforated plate 51, long-distance spraying is achieved through the fan 53, and angle adjustment is achieved through the rotary motor 6. Together, these methods solve the problems of short range, narrow coverage, and low dust removal efficiency of traditional water spraying methods.

[0046] In some embodiments of this application, the front end of the hollow barrel 5 is provided with an annular groove. The shape of the annular groove corresponds to the outer contour of the spray annular perforated plate 51. The spray annular perforated plate 51 is configured to be fixedly snapped into the annular groove.

[0047] The annular groove provides circumferential and radial restraint to the annular perforated spray plate 51, ensuring that it is positioned at the designed front end of the hollow cannon barrel 5 after installation, with the mesh area aligned with the air outlet of the fan 53 to guarantee atomization effect. Simultaneously, the snap-fit ​​connection ensures connection stability while also balancing assembly processability and ease of future maintenance.

[0048] In some embodiments of this application, reference is made to Figure 5 As shown, the drip collection mechanism includes a drip collection frame 4, a recovery pipe 42, a recovery frame 43, and a filter screen 44. The drip collection frame 4 is fixedly connected above the positioning and placement frame 3 and located directly below the front muzzle of the hollow barrel 5 to ensure that all dripping liquid can be effectively collected.

[0049] A high-low collection chamber 41 is provided on the upper surface of the drip collection frame 4. The bottom of the high-low collection chamber 41 is inclined in the horizontal direction to guide the liquid to naturally collect at the lowest point. The inlet end of the recovery pipe 42 is fixedly connected to the position on the drip collection frame 4 corresponding to the lowest point of the high-low collection chamber 41, so as to efficiently discharge the liquid collected there. The outlet end of the recovery pipe 42 is fixedly connected to the inlet end of the recovery frame 43. The recovery frame 43 is fixedly installed on the side wall of the liquid storage tank 2, and its internal cavity is connected to the inner cavity of the liquid storage tank 2, forming the final channel for liquid return. Inside the outlet end of the recovery frame 43, a filter screen plate 44 is fixedly installed. The filter screen plate 44 has uniformly distributed filter mesh holes on its plate body for filtering solid impurities such as dust carried in the recovered liquid.

[0050] Understandably, when the rotating dust collector stops or pauses in operation, residual liquid may drip from the nozzle and the spray ring perforated plate 51. This dripping liquid first falls into the drip collection frame 4 directly below. Because the bottom surface of the high and low collection chambers 41 of the drip collection frame 4 is inclined, the liquid does not accumulate there but flows automatically to the lowest point of the chamber under gravity. The liquid collected at the lowest point then flows into the recovery pipe 42 connected to this point. The liquid is guided to the recovery frame 43 via the recovery pipe 42. During its flow through the recovery frame 43, the liquid must pass through the filter screen 44. The dense filter mesh on the filter screen 44 can intercept solid particles such as coal dust and rock powder mixed in with the liquid, achieving preliminary solid-liquid separation.

[0051] The relatively clean liquid after filtration flows back into the inner cavity of the storage tank 2 through the connection between the recovery frame 43 and the storage tank 2, awaiting extraction and reuse by the delivery pump 7. In this embodiment, the drip collection mechanism solves the problem of muzzle drip recovery and purification through steps such as drip collection frame 4 receiving, high and low collection chambers 41 guiding, recovery pipe 42 conveying, filter screen 44 filtering, and recovery frame 43 returning the liquid. This not only saves water resources but also avoids secondary pollution to the environment caused by direct discharge of dust-laden wastewater.

[0052] In some embodiments of this application, an inspection port is provided on the side wall of the recovery frame 43 away from the liquid storage tank 2. An inspection cover 45 is fixedly installed at the inspection port with screws. A certain gap is left between the inspection cover 45 and the filter screen 44 located inside the recovery frame 43 to ensure that the liquid can flow smoothly before and after passing through the filter screen 44 without being blocked by the inspection cover 45.

[0053] Understandably, after long-term operation, the filter screen 44 will intercept and accumulate more and more dust and impurities, which may cause filter pore blockage, affecting liquid return efficiency and even causing overflow. At this time, maintenance personnel do not need to disassemble the entire recovery frame 43. They only need to unscrew the screws fixing the inspection cover 45 to open the inspection cover 45 and directly face the filter screen 44 and the inner cavity of the recovery frame 43, which improves the maintainability and long-term operational reliability of the dripping liquid recovery system.

[0054] In some embodiments of this application, the recovery frame 43 is a hollow cavity structure that extends through both ends. Its liquid outlet end (i.e., the end away from the drip collection frame 4) penetrates the side wall of the liquid storage tank 2 and extends into the inner cavity of the liquid storage tank 2. At the same time, the outer wall of the recovery frame 43 and the side wall of the liquid storage tank 2 are sealed and fixedly connected at the penetration point by welding, flange sealing connection or other sealing processes.

[0055] This through-type connection allows the liquid filtered by the filter screen 44 to flow directly from the outlet of the recovery frame 43 into the interior of the storage tank 2 without the need for additional transfer containers or complex piping connections, resulting in the shortest and most direct return path. The sealed connection between the outer wall of the recovery frame 43 and the side wall of the storage tank 2 ensures a tight seal, preventing leakage at the return interface and avoiding external contaminants from entering the storage tank 2. Extending the outlet of the recovery frame 43 into the interior of the storage tank 2 prevents splashing or air bubbles from the returning liquid falling from a height, allowing it to flow smoothly into the water in the storage tank 2.

[0056] As can be seen from the above embodiments, the overall usage process of the dust suppression water cannon for coal mining and processing provided in this application is as follows: First, the operator holds the push handle of the dust suppression mobile trolley and uses the swivel casters with brakes to push the equipment to the dust-generating operation area in the underground coal mine or open-pit mine. After arriving, the operator steps on the brake device to secure the vehicle. Then, the operator opens the liquid storage tank cover, adds sufficient clean water or prepared dust suppression liquid, and closes the tank cover.

[0057] The control unit first controls the two electric telescopic cylinders of the positioning and lifting mechanism to move synchronously. Their telescopic ends push the concave frame up or down, precisely guiding the rotating dust collector to a suitable position for capturing dust at the current height through the sliding engagement of the positioning sleeve plate and positioning hole. Next, the rotary motor is started, driving the hollow collector to rotate around its rotating shaft within the concave frame, aligning the nozzle with the direction of dust emission. Simultaneously, the water pump is started, drawing liquid from the bottom of the storage tank, pressurizing it, and then delivering it through a corrugated telescopic pipe to the liquid inlet at the rear end of the hollow collector. The liquid enters the hollow collector and flows towards the spray ring perforated plate, where it is initially atomized. At this point, the fan is started, further atomizing the droplets and accelerating the spray, forming a misted water curtain to capture settling dust.

[0058] During operation and pauses, liquid dripping from the spray ring perforated plate and the nozzle is collected by the drip collection frame, flows along the bottom of the chamber to the lowest point, and is then guided into the recovery frame through the recovery pipe. As the liquid flows through the recovery frame, the filter screen intercepts dust particles, and the clean liquid flows back to the storage tank to complete water resource recovery. During regular maintenance, the recovery frame inspection cover is opened to clean impurities. After operation, the delivery water pump, blower, and rotary motor are turned off in sequence, the nozzle is reset, the caster brakes are released, and the equipment is pushed away.

[0059] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the disclosure in the specification and the embodiments. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein.

Claims

1. A dust suppression water cannon for coal mining and processing, characterized in that, It includes a dust removal mobile trolley (1), a dust removal liquid conveying mechanism, a positioning and lifting mechanism, a rotating dust removal cannon, and a dripping liquid collection mechanism; The dust removal liquid conveying mechanism is fixedly installed on the dust removal mobile trolley (1); The positioning and lifting mechanism is fixedly installed at the upper front end of the dust removal liquid conveying mechanism; The rotary dust removal cannon is movably installed on the upper inner side of the positioning and lifting mechanism, and the liquid inlet of the rotary dust removal cannon is connected to the liquid outlet of the dust removal liquid storage and conveying mechanism. The dripping liquid collection mechanism is fixedly installed on the positioning and lifting mechanism, and the dripping liquid collection mechanism is located directly below the muzzle of the rotating dust removal barrel. The liquid outlet of the dripping liquid collection mechanism is connected to the liquid storage cavity of the dust removal liquid storage and conveying mechanism.

2. The dust suppression water cannon for coal mining and processing according to claim 1, characterized in that, The dust removal mobile trolley (1) is a trolley frame. The lower end of the trolley frame is rotatably equipped with a rotating universal wheel (11) with a brake, and the rear end of the trolley frame is fixed with a push handle (12). The dust removal and liquid storage conveying mechanism is fixedly installed within the accommodating space enclosed by the inner side of the trolley frame.

3. The dust suppression water cannon for coal mining and processing according to claim 2, characterized in that, The dust removal liquid conveying mechanism includes a liquid storage tank (2), an extraction and conveying pipe (14), a conveying water pump (7), and a corrugated telescopic pipe (71). The liquid storage tank (2) is fixedly installed on the dust removal mobile trolley (1). The upper end face of the liquid storage tank (2) is provided with a liquid inlet, and a tank cover (13) is threadedly connected to the liquid inlet. One end of the extraction and delivery pipe (14) penetrates the side wall of the liquid storage tank (2) and extends to the bottom of the inner cavity of the liquid storage tank (2), and the other end of the extraction and delivery pipe (14) is fixedly connected to the inlet end of the delivery pump (7). The water pump (7) is fixedly installed on the front outer wall of the liquid storage tank (2). The outlet end of the water pump (7) is fixedly connected to one end of the corrugated telescopic pipe (71), and the other end of the corrugated telescopic pipe (71) is fixedly connected to the inlet end of the rotary dust removal barrel.

4. The dust suppression water cannon for coal mining and processing according to claim 3, characterized in that, The positioning and lifting mechanism includes a positioning frame (3), two electric telescopic cylinders (31), two positioning sleeves (61), and a concave frame (62). The positioning and placement frame (3) is fixedly connected to the upper part of the front end face of the liquid storage tank (2); Two electric telescopic cylinders (31) are symmetrically fixedly installed on the inner side of the upper end face of the positioning frame (3). The telescopic ends of the two electric telescopic cylinders (31) are both vertically upward, and the two electric telescopic cylinders (31) are synchronized through a synchronizer. The upper end face of the positioning placement frame (3) has two positioning sleeve holes (32), which are symmetrically distributed on the outside of the two electric telescopic cylinders (31). The two positioning sleeves (61) are respectively fitted into the inner side of the two positioning sleeve holes (32), and the positioning sleeves (61) can slide up and down along the axial direction of the positioning sleeve holes (32); The concave frame (62) is fixedly connected to the upper end face of the two positioning sleeves (61), and the lower end face of the concave frame (62) is fixedly connected to the telescopic ends of the two electric telescopic cylinders (31). The rotating dust removal barrel is movably installed on the inner side of the upper end of the concave frame (62).

5. The dust suppression water cannon for coal mining and processing according to claim 4, characterized in that, The rotary dust removal cannon includes a hollow cannon (5), two rotating shafts (52), a rotary motor (6), a fan (53), and a spray annular hollow plate (51). Two rotating shafts (52) are symmetrically fixedly connected to the outer walls of the two sides of the hollow barrel (5), and the hollow barrel (5) is rotatably installed between the two side walls of the concave frame (62) through the two rotating shafts (52). The rotary motor (6) is fixedly installed on the outer wall of the concave frame (62), and the output shaft of the rotary motor (6) is fixedly connected to the rotating shaft (52) on the same side through a coupling; The fan (53) and the spray annular perforated plate (51) are both fixedly installed in the inner cavity of the hollow barrel (5), and the spray annular perforated plate (51) is located at the air outlet of the fan (53). The spray annular perforated plate (51) has evenly distributed through mesh holes on its plate body. The hollow barrel (5) has a liquid inlet at its rear end, and the liquid inlet is fixedly connected to the end of the corrugated telescopic pipe (71) away from the water pump (7).

6. The dust suppression water cannon for coal mining and processing according to claim 5, characterized in that, The front end of the hollow barrel (5) is provided with an annular groove, and the spray annular hollow plate (51) is fixedly snapped into the annular groove.

7. The dust suppression water cannon for coal mining and processing according to claim 5, characterized in that, The drip collection mechanism includes a drip collection frame (4), a recovery pipe (42), a recovery frame (43), and a filter screen (44). The drip collection frame (4) is fixedly connected above the positioning and placement frame (3), and the drip collection frame (4) is located directly below the front end of the hollow barrel (5). The upper end face of the drip collection frame (4) is provided with a high and low collection chamber (41). The bottom of the high and low collection chamber (41) is inclined in the horizontal direction. The inlet end of the recovery pipe (42) is fixedly connected to the position on the drip collection frame (4) corresponding to the lowest point of the bottom of the high and low collection chamber (41). The outlet end of the recovery pipe (42) is fixedly connected to the inlet end of the recovery frame (43). The recovery frame (43) is fixedly installed on the side wall of the liquid storage tank (2), and the inner cavity of the recovery frame (43) is connected to the inner cavity of the liquid storage tank (2). The filter plate (44) is fixedly installed on the inner side of the liquid outlet end of the recycling frame (43), and the filter plate (44) has uniformly distributed filter holes.

8. The dust suppression water cannon for coal mining and processing according to claim 7, characterized in that, The recycling frame (43) has an inspection port on the side wall away from the liquid storage tank (2). An inspection cover plate (45) is fixedly installed at the inspection port by screws. A gap is left between the inspection cover plate (45) and the filter screen plate (44) for liquid to flow.

9. The dust suppression water cannon for coal mining and processing according to claim 7, characterized in that, The recovery frame (43) is a hollow cavity structure with both ends through. The liquid outlet end of the recovery frame (43) penetrates the side wall of the liquid storage tank (2) and extends into the inner cavity of the liquid storage tank (2). The outer wall of the recovery frame (43) is sealed and fixedly connected to the side wall of the liquid storage tank (2).

10. The dust suppression water cannon for coal mining and processing according to claim 4, characterized in that, The outer dimensions of the positioning sleeve (61) are adapted to the inner diameter of the positioning sleeve hole (32), and the outer wall of the positioning sleeve (61) slides against the inner wall of the positioning sleeve hole (32). Both of the electric telescopic cylinders (31) are electrically connected to an external control box, and the synchronizer is integrated inside the control box.

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