A coal mining machine with a drum dust removal spray mechanism

Abstract

The present invention relates to a coal mining machine with a roller dust removal spray mechanism, which belongs to the technical field of coal mining machine dust removal; it comprises a control support box, and an adjusting handle is rotatably provided at each end of the control support box, and a coal mining roller and a fixed atomizing spray disc are provided at the end of the two adjusting handles away from the control support box, and the coal mining roller comprises a baffle, a crushing barrel, and a cover plate, and the baffle is fixedly provided at the end of the adjusting handle, and a crushing barrel is rotatably provided inside the baffle, and a cover plate is fixedly provided at the outer opening of the crushing barrel, and an air vent is provided on the cover plate, and an inlet gap adjustment mechanism is provided on the inner side of the cover plate; an impeller is rotatably provided inside the crushing barrel; a rotating dust reduction mechanism is rotatably provided on the baffle; a water supply pipe is provided on the adjusting handle, and the water supply pipe is connected to the fixed atomizing spray disc and the rotating dust reduction mechanism; the problem of limited dust reduction range existing in the current coal mining machine atomizing dust reduction device is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mining machine dust removal, and in particular relates to a coal mining machine with a drum dust removal spray mechanism. Background Art

[0002] During coal mining, shearers generate large amounts of dust. This dust not only reduces visibility in the mining area, affecting operators' sight and increasing operational risks, but also contains tiny particles that, when inhaled, can cause serious damage to workers' respiratory systems and lead to occupational diseases such as pneumoconiosis. Traditional shearers have numerous shortcomings in dust reduction, making them unable to meet increasingly stringent production safety and environmental protection requirements.

[0003] Existing coal mining machine atomization dust reduction devices often have the problem of limited dust reduction range; ordinary atomization nozzles can only generate water mist in local areas, and it is difficult to fully cover the space around the coal mining drum; for example, the atomization nozzles of some coal mining machines are fixed in installation position, and the spray angle and range cannot be flexibly adjusted according to the actual coal mining situation, resulting in dust in certain parts of the coal mining drum, especially the sides and front end. The cleaning problem of the atomization nozzle cannot be effectively suppressed; the cleaning problem of the atomization nozzle is also a key factor; in the coal mining environment, dust is easy to adhere to the surface of the atomization nozzle. As the working time increases, the dirt on the nozzle surface will affect the atomization effect and reduce the dust reduction efficiency; moreover, due to the vibration and frequent use of the coal mining machine during operation, traditional cleaning devices are prone to use fatigue and cannot stably clean the atomization nozzle for a long time, which further affects the dust reduction effect; for this reason, the present application designs a coal mine coal mining machine with a drum dust removal spray mechanism to solve the above problems. Summary of the Invention

[0004] The present invention overcomes the shortcomings of the prior art and proposes a coal mining machine with a drum dust removal spray mechanism, thereby solving the problem of limited dust reduction range in the current coal mining machine atomization dust reduction device.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0006] A coal mining machine with a drum dust removal spray mechanism comprises a control support box, and an adjustment handle is rotatably provided at each end of the control support box, and a coal mining drum and a fixed atomizing spray disc are provided at the end of the two adjustment handles away from the control support box, and the coal mining drum comprises a baffle, a crushing drum, and a cover plate, and the baffle is fixedly provided at the end of the adjusting handle, and a crushing drum is rotatably provided inside the baffle, and a cover plate is fixedly provided at the outer opening of the crushing drum, and an air vent is provided on the cover plate, and an inlet gap adjustment mechanism is provided on the inner side of the cover plate; an impeller is rotatably provided inside the crushing drum; a rotating dust reduction mechanism is rotatably provided on the baffle; a water pipe is provided on the adjusting handle, and the water pipe is connected to the fixed atomizing spray disc and the rotating dust reduction mechanism.

[0007] Furthermore, a support frame is fixedly provided at both ends of the control support box, and a motor box is fixedly provided at one end of the two adjustment handles close to the control support box. An adjustment motor is fixedly provided inside the motor box, and a connecting shaft is fixedly provided on the output shaft of the adjustment motor. The end of the connecting shaft away from the adjustment motor passes through the adjustment handle and is fixedly connected to the support frame on the same side.

[0008] Furthermore, a spray atomizer is provided inside the opening of the fixed atomizing spray disc, and the liquid inlet end of the spray atomizer is connected to the water pipe.

[0009] Furthermore, the shield includes a disc and a bell-shaped mouth, the disc is fixedly arranged inside the narrow end of the bell-shaped mouth, and the center of the outer side surface of the disc is fixedly connected to the end of the adjusting handle; a protective net is arranged on the disc of the shield; the crushing barrel is a trumpet-shaped structure, the narrow end of the crushing barrel is located inside the shield, and the coarse end of the crushing barrel is located outside the shield, and the cover plate is fixedly arranged on the coarse end of the crushing barrel; a crushing blade is fixedly arranged on the outer surface of the crushing barrel; and a circle of air holes arranged in a circular array is provided on the cover plate.

[0010] Furthermore, a mounting bracket is fixedly provided on the inner side surface of the cover plate, and the mounting bracket is located on the inner side of the crushing barrel; the mounting bracket includes a cylinder and a cross, both ends of the cylinder remain open, one end opening of the cylinder is fixedly connected to the inner side surface of the cover plate, and a cross is fixedly provided at the opening of the other end of the cylinder; a rotating connecting shaft is fixedly provided at the center of the cross, one end of the rotating connecting shaft extends into the interior of the mounting bracket and is fixedly provided with the impeller; a driving motor is fixedly provided at the center of the inner side surface of the disc of the baffle cover, and the output shaft of the driving motor is fixedly connected to the end of the rotating connecting shaft away from the impeller.

[0011] Furthermore, the entrance gap adjustment mechanism includes a retraction guide seat, a connecting frame, an electric telescopic rod, and an adjusting top block; the connecting frame includes a circular ring and a circle of radial rods arranged in a circular array, and all radial rods are fixedly connected to the circular ring; the inner ends of all radial rods are fixedly connected to each other, and the outer ends of all radial rods extend to the outside of the circular ring; an adjusting top block is fixedly provided at the outer end of each radial rod of the connecting frame, the adjusting top block corresponds one-to-one to the air vents on the cover plate, the adjusting top block is located on the inner side of the corresponding air vent, and an electric telescopic rod is fixedly provided at the center of the inner side surface of the cover plate, and one end of the piston rod of the electric telescopic rod is fixedly connected to the center of the connecting frame; multiple retraction guide seats are fixedly provided on the connecting frame, the retraction guide seat includes an outer tube, an inner rod, and a spring, the inner rod is slidably inserted into the outer tube, a spring is provided between the inner rod and the outer tube, the end of the inner rod is fixedly connected to the connecting frame, and the end of the outer tube is fixedly connected to the inner side surface of the cover plate.

[0012] Furthermore, the rotating dust reduction mechanism includes a mounting turntable, a rotating motor, a driven gear ring, and a driving gear; a circular ring-shaped mounting turntable is rotatably arranged inside the baffle, and a driven gear ring is fixedly arranged on the inner cylindrical surface of the mounting turntable; a rotating motor is fixedly arranged on the outer surface of the baffle, the output shaft of the rotating motor extends into the inside of the baffle and a driving gear is fixedly arranged on the output shaft of the rotating motor, and the driving gear is meshed with the driven gear ring.

[0013] Furthermore, the rotating dust reduction mechanism also includes a transmission liquid inlet pipe, a spray dust reduction assembly, and a liquid storage tank; a circle of spray dust reduction assembly is provided on the outer side of the mounting turntable, and a circular liquid storage tank is provided on the inner side surface of the mounting turntable, and a connecting hole is provided on the inner wall of the liquid storage tank, and the liquid storage tank is connected to the spray dust reduction assembly through the connecting hole; a circular fixed ring is fixedly provided on the inner side of the baffle, and the fixed ring maintains sliding contact with the inner side surface of the mounting turntable, and a transmission liquid inlet pipe is fixedly provided inside the fixed ring, one end of the transmission liquid inlet pipe passes through the baffle and is connected to the water pipe, and the other end of the transmission liquid inlet pipe extends to the inside of the liquid storage tank.

[0014] Furthermore, the spray dust reduction assembly includes a transmission box, a pushing and fixing box and an electrostatic atomizing sprayer, and the transmission box, the pushing and fixing box and the electrostatic atomizing sprayer are all fixedly arranged on the outer surface of the mounting turntable; a toggle motor and a toggle shaft are provided in the transmission box, and the toggle motor drives the toggle shaft to rotate; an electric pushing device and a liquid guide column are provided in the pushing and fixing box, and the electric pushing device drives the liquid guide column to move, and the electrostatic atomizing sprayer is installed between the liquid guide column and the toggle shaft, and the end of the liquid guide column is provided with a contact sealing gasket; the side end of the toggle shaft is provided with a limiting protrusion inserted into the electrostatic atomizing sprayer.

[0015] Furthermore, a top cover is slidably sleeved on the outer side of the spray port at the upper end of the electrostatic atomizing sprayer; a plurality of connecting springs are provided on the inner end face of the top cover, the upper ends of the connecting springs are fixedly connected to the top cover, and the lower ends of the connecting springs are fixedly connected to magnetic blocks, and a metal block that can be adsorbed by the magnetic block is provided at the lower end of the magnetic block, and the metal block is fixedly provided at the upper end face of the electrostatic atomizing sprayer, and a circle of inclined brush plates is fixedly provided on the inner wall of the top cover, and the inclined brush plates are in contact with the outer side face of the spray port.

[0016] The beneficial effects of the present invention compared to the prior art are:

[0017] 1. The present invention has the advantage of efficient and stable coal mining operations. By controlling the support frames symmetrically arranged on both sides of the support box, a stable structural foundation is provided for the coal mining machine, ensuring that the equipment will not shake due to impact force during the coal mining process, thereby ensuring the stability and reliability of the coal mining operation; the crushing cutter head installed on the crushing drum can effectively crush the coal and realize efficient coal mining operations; the setting of the motor box and the connecting shaft on the adjusting handle contributes to the stable rotation of the adjusting handle, thereby driving the coal mining drum to operate smoothly, further improving the coal mining efficiency.

[0018] 2. The present invention has a good spray dust reduction effect. The water source is provided to the fixed atomizing spray disc and the rotating dust reduction mechanism through the water pipe. The spray atomizer on the fixed atomizing spray disc can spray atomized water during coal mining to reduce the dust in the coal mining area; the rotating motor of the rotating dust reduction mechanism drives the installation turntable to rotate through the transmission structure, so that the spray dust reduction component can perform dust reduction treatment on the coal mining area in all directions, ensuring a wide spray coverage range; the electrostatic atomizing sprayer in the spray dust reduction component uses the electrostatic principle to atomize water more densely, further improving the dust reduction effect, effectively reducing dust pollution in the coal mining process, improving the working environment, and protecting the health of the staff.

[0019] 3. The present invention has a precise internal air pressure control method. The gap of the air holes on the cover plate can be accurately adjusted through the inlet gap adjustment mechanism, and together with the rotation of the impeller on the mounting frame, the precise control of the internal air pressure of the coal mining drum can be achieved; when the internal air flow needs to be increased, the gap of the air holes can be increased and the impeller rotation speed can be accelerated, and vice versa, thereby ensuring the air pressure balance inside the coal mining drum, which is not only conducive to the normal progress of coal mining work, but also enables the water mist to be better diffused inside, further improving the effect of spray dust reduction.

[0020] 4. The present invention has a reliable equipment protection mechanism. The shield provided can prevent coal from splashing. The four protective nets installed at equal intervals on it further enhance the protection of internal rotating dust reduction mechanism, spray dust reduction assembly and other components, prevent larger external particles from entering the coal mining drum, and reduce the risk of component damage; the top cover in the spray dust reduction assembly is tightly closed by connecting springs and magnetic blocks to prevent external dust from entering; the inclined brush plate performs simple cleaning of the electrostatic atomizing sprayer during the opening and closing process of the top cover; the abutment sealing gasket at the end of the liquid guide column prevents liquid leakage; the limiting protrusion of the rotating shaft stabilizes the working state of the electrostatic atomizing sprayer; these designs together constitute the self-protection mechanism of the equipment, which improves the service life and reliability of the equipment.

[0021] 5. The present invention has strong environmental adaptability. Under different coal mining environments, the coal mining machine can perform corresponding adjustment operations; for example, when the dust content is high, the water flow rate of the water pipe can be increased, the rotation speed of the rotating dust reduction mechanism can be adjusted, and the frequency and range of the spray dust reduction can be increased; when the hardness of the coal seam is large, the speed of the coal mining drum can be adjusted, and the power output of the motor box can be increased to ensure the crushing effect; the inlet gap adjustment mechanism can also adjust the air vent gap according to actual conditions to adapt to the requirements of different coal mining environments for internal air pressure and air flow, so that the coal mining machine can operate stably under a variety of complex working conditions.

[0022] 6. The present invention cooperates with the impeller and the inlet gap adjustment mechanism to facilitate the device to disperse the dust on the side end of the cover plate, thereby improving the efficiency of atomization dust reduction, and thus realizing the function of efficient dust reduction by coordinating atomization and blowing. By installing the turntable and coordinating with the spray dust reduction component, the electrostatic atomization sprayer is facilitated to more comprehensively reduce the dust on the coal mining drum, thereby improving the dust reduction efficiency of the device, and thus realizing the function of covering the front of the coal mining drum with atomization dust reduction. The cooperation of the top cover and the inclined brush plate facilitates the flexible cleaning of the end of the electrostatic atomization sprayer, thereby improving the working effect of the electrostatic atomization sprayer, and thus realizing the function of maintaining the stable operation of the electrostatic atomization sprayer, and finally solving the problem of easy dirtiness and fatigue of the cleaning device of the atomization sprayer in the coal mining machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described in detail below with reference to the accompanying drawings:

[0024] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0025] Figure 2 It is a schematic diagram of the connection between the adjustment handle, connecting shaft, water pipe and coal mining drum;

[0026] Figure 3 It is a schematic diagram of the connection between the cover plate and the mounting frame, the impeller, the inlet clearance adjustment mechanism, and the rotating connecting shaft;

[0027] Figure 4 It is a structural diagram of the inlet gap adjustment mechanism;

[0028] Figure 5 It is a structural diagram of the rotating dust suppression mechanism;

[0029] Figure 6 It is a schematic diagram of the connection between the liquid transmission inlet pipe and the liquid storage tank;

[0030] Figure 7 It is a structural diagram of the spray dust suppression component;

[0031] Figure 8 It is a schematic diagram of the connection between the liquid guide column, the abutment sealing gasket, and the limiting protrusion;

[0032] Figure 9 It is a schematic diagram of the connection between the top cover and the connecting spring, magnetic block, and tilting brush plate;

[0033] Among them, 1 is a control support box, 2 is an adjusting handle, 3 is a coal mining drum, 4 is a support frame, 5 is a connecting shaft, 6 is a water pipe, 7 is a fixed atomizing spray disc, 8 is a crushing barrel, 9 is a cover plate, 10 is a rotating dust reduction mechanism, 11 is a mounting frame, 12 is an impeller, 13 is an inlet gap adjustment mechanism, 14 is a rotating connecting shaft, 15 is an electric telescopic rod, 16 is a retraction guide seat, 17 is a connecting frame, 18 is an adjusting top block, 19 is a rotating motor, 20 is a mounting turntable, 21 is a driven gear ring, 22 is a transmission liquid inlet pipe, 23 is a spray dust reduction component, 24 is a liquid storage tank, 25 is a liquid guide column, 26 is a toggle shaft, 27 is an electrostatic atomizing sprayer, 28 is a top cover, 29 is abutting sealing gasket, 30 is a limiting protrusion, 31 is a connecting spring, 32 is a magnetic suction block, and 33 is an inclined brush plate. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. The technical solutions of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0035] like Figure 1As shown in FIG9 , the present invention provides a coal mining machine with a roller dust removal spray mechanism, comprising a control support box 1, wherein an adjusting handle 2 is rotatably provided at each end of the control support box 1, and a coal mining roller 3 and a fixed atomizing spray disc 7 are provided at the end of the two adjusting handles 2 away from the control support box 1, and the coal mining roller 3 comprises a baffle, a crushing barrel 8, and a cover plate 9, wherein the baffle is fixedly provided at the end of the adjusting handle 2, and a crushing barrel 8 is rotatably provided inside the baffle, and a cover plate 9 is fixedly provided at the outer opening of the crushing barrel 8, and an air vent is provided on the cover plate 9, and an inlet gap adjustment mechanism 13 is provided on the inner side of the cover plate 9; an impeller 12 is rotatably provided inside the crushing barrel 8; a rotating dust reduction mechanism 10 is rotatably provided on the baffle; a water supply pipe 6 is provided on the adjusting handle 2, and the water supply pipe 6 is connected to the fixed atomizing spray disc 7 and the rotating dust reduction mechanism 10.

[0036] A support frame 4 is fixedly installed at each end of the control support box 1. A motor box is fixedly installed at the end of the two adjustment handles 2 near the control support box 1. An adjustment motor is fixed inside the motor box. A connecting shaft 5 is fixedly installed on the output shaft of the adjustment motor. The end of the connecting shaft 5 away from the adjustment motor passes through the adjustment handle 2 and is fixedly connected to the support frame 4 on the same side. When the adjustment motor rotates, since the control support box 1 and the support frame 4 cannot rotate, the output shaft of the adjustment motor cannot rotate. The body of the adjustment motor begins to rotate, and the body of the adjustment motor drives the adjustment handle 2 to rotate, thereby adjusting the angle of the adjustment handle 2.

[0037] A spray atomizer is provided inside the opening of the fixed atomizing spray disc 7. The liquid inlet end of the spray atomizer is connected to the water pipe 6. The water pipe 6 provides a water source for the fixed atomizing spray disc 7. The fixed atomizing spray disc 7 and the spray atomizer can spray dust reduction while mining coal to reduce dust pollution. The model of the spray atomizer is NE-C900.

[0038] The shield comprises a disc and a bell mouth, the disc is fixedly arranged inside the narrow end of the bell mouth, and the center of the outer side of the disc is fixedly connected to the end of the adjustment handle 2. Four protective screens arranged in a circular array are arranged on the disc of the shield.

[0039] The crushing barrel 8 is a trumpet-shaped structure, with the narrow end of the crushing barrel 8 located inside the shield and the coarse end of the crushing barrel 8 located outside the shield. The cover plate 9 is fixedly installed on the coarse end of the crushing barrel 8. A crushing cutter head is fixedly installed on the outer surface of the crushing barrel 8.

[0040] A circle of air vents arranged in a circular array is provided on the cover plate 9. A mounting bracket 11 is fixedly provided on the inner side of the cover plate 9, and the mounting bracket 11 is located on the inner side of the crushing barrel 8. The mounting bracket 11 includes a cylinder and a cross, and both ends of the cylinder remain open. The opening at one end of the cylinder is fixedly connected to the inner side of the cover plate 9, and a cross is fixedly provided at the opening at the other end of the cylinder. A rotating connecting shaft 14 is fixedly provided at the center of the cross, and one end of the rotating connecting shaft 14 extends into the interior of the mounting bracket 11 and is fixedly provided with the impeller 12. A driving motor is fixedly provided at the center of the inner side of the disc of the baffle, and the output shaft of the driving motor is fixedly connected to the end of the rotating connecting shaft 14 away from the impeller 12. The driving motor drives the mounting bracket 11, the impeller 12, the crushing barrel 8, and the cover plate 9 to rotate synchronously through the rotating connecting shaft 14.

[0041] The inlet gap adjustment mechanism 13 includes a retracting guide seat 16, a connecting frame 17, an electric telescopic rod 15, and an adjusting top block 18. The connecting frame 17 includes a circular ring and a circle of radial rods arranged in a circular array. All radial rods are arranged along the radial direction of the circular ring and are fixedly connected to the circular ring. The inner ends of all radial rods are fixedly connected to each other, and the outer ends of all radial rods extend to the outside of the circular ring. An adjusting top block 18 is fixedly installed at the outer end of each radial rod of the connecting frame 17. The adjusting top block 18 corresponds to the air vent on the cover plate 9 one by one. The adjusting top block 18 is located on the inner side of the corresponding air vent. The size of the air vent opening is controlled by sliding the adjusting top block 18. An electric telescopic rod 15 is fixedly installed at the center of the inner side of the cover plate 9. One end of the piston rod of the electric telescopic rod 15 is fixedly connected to the center of the connecting frame 17. A circular array of retraction guides 16 is fixedly mounted on the ring of the connecting frame 17. The retraction guides 16 comprise an outer tube, an inner rod, and a spring. The inner rod is slidably inserted into the outer tube, and a spring is disposed between the inner and outer tubes. The end of the inner rod is fixedly connected to the connecting frame 17, and the end of the outer tube is fixedly connected to the inner side of the cover plate 9. When the electric telescopic rod 15 is in the extended state, the spring inside the retraction guide 16 acts to cause the connecting frame 17 to be positioned away from the cover plate 9. The connecting frame 17 drives the adjusting top block 18 to be positioned away from the air vent, thereby maintaining the air vent's opening at its maximum. When the electric telescopic rod 15 is in the retracted state, the connecting frame 17 is positioned closer to the cover plate 9. The spring inside the retraction guide 16 is compressed, and the connecting frame 17 drives the adjusting top block 18 to be positioned inside the air vent, thereby maintaining the air vent's opening at its minimum. By controlling the extension range of the electric telescopic rod 15, the air vent's opening can be adjusted.

[0042] The rotary dust reduction mechanism 10 includes a mounting turntable 20 , a rotary motor 19 , a driven gear ring 21 , a driving gear, a liquid transmission inlet pipe 22 , a spray dust reduction assembly 23 , and a liquid storage tank 24 .

[0043] A circular mounting disc 20 rotates within the housing, with a driven ring gear 21 fixedly mounted on its inner cylindrical surface. A rotating motor 19 is fixedly mounted on the outer surface of the disc. The output shaft of the rotating motor 19 extends into the housing, and a driving gear is fixedly mounted on the output shaft of the rotating motor 19. The driving gear meshes with the driven ring gear 21. The rotating motor 19 rotates the driving gear, which in turn rotates the driven ring gear 21, which in turn rotates the mounting disc 20.

[0044] A spray dust suppression assembly 23 is mounted on the outer side of the mounting turntable 20, and a circular liquid storage tank 24 is mounted on the inner side of the mounting turntable 20. The inner wall of the liquid storage tank 24 is provided with a connection hole, through which the liquid storage tank 24 is connected to the spray dust suppression assembly 23. A circular fixed ring is fixedly mounted on the inner side of the shield. The fixed ring maintains sliding contact with the inner side of the mounting turntable 20, thereby ensuring that the liquid in the rotating liquid storage tank 24 does not leak out. A liquid transfer inlet pipe 22 is fixedly mounted inside the fixed ring. One end of the liquid transfer inlet pipe 22 passes through the shield and is connected to the water supply pipe 6. The other end of the liquid transfer inlet pipe 22 extends into the liquid storage tank 24.

[0045] The spray dust suppression assembly 23 includes a transmission box, a push-fixing box, and an electrostatic atomizing sprayer 27. These are all fixedly mounted on the outer surface of the mounting turntable 20. The transmission box houses a toggle motor and a toggle shaft 26, which rotate the toggle motor. The push-fixing box houses an electric pusher and a liquid guide column 25, which move the column. The electrostatic atomizing sprayer 27 is mounted between the column 25 and the toggle shaft 26. The coordinated operation of the transmission box and the push-fixing box allows the spray dust suppression assembly 23 to precisely control the operation of the electrostatic atomizing sprayer 27, improving the atomization and dust suppression effect. The model of the electrostatic atomizing sprayer 27 is YH120. The end of the liquid guiding column 25 is provided with an abutting sealing gasket 29, which ensures the sealing of the liquid guiding column 25; the side end of the toggle shaft 26 is provided with a limiting protrusion 30 inserted into the electrostatic atomizing sprayer 27, which helps to control the rotation of the electrostatic atomizing sprayer 27 by the toggle shaft 26. A top cover 28 is slidably sleeved on the outer side of the spray port at the upper end of the electrostatic atomizing sprayer 27, and the top cover 28 can slide out of its original position when the mounting turntable 20 rotates rapidly; the inner end face of the top cover 28 is provided with four connecting springs 31 arranged in a circular array, the upper ends of the connecting springs 31 are fixedly connected to the top cover 28, and the lower ends of the connecting springs 31 are fixedly connected to magnetic blocks 32, and the lower ends of the magnetic blocks 32 are provided with metal blocks that can be adsorbed by the magnetic blocks 32, and the metal blocks are fixedly set at the upper end face of the electrostatic atomizing sprayer 27. The setting of the connecting springs 31 and the magnetic blocks 32 helps the top cover 28 to be stably reset when the mounting turntable 20 is at a low speed. A circle of inclined brush plates 33 arranged in a circular array is fixedly provided on the inner wall of the top cover 28, and the inclined brush plates 33 are in contact with the outer side surface of the spray port; the inclined brush plates 33 can be unfolded after the top cover 28 slides off its original position and driven by the impact of the short-distance atomized liquid to clean the upper end of the electrostatic atomizing sprayer 27.

[0046] The present invention also provides a method for using a coal mining machine with a drum dust removal spray mechanism, comprising the following steps:

[0047] Step one, first connect the power to all the electrical components of the device, then connect the water supply device to the water pipe 6, and then slide the control support box 1 so that the sliding control support box 1 provides the necessary control instructions for the operation of the coal mining machine; the support frame 4 is symmetrically arranged on both sides of the control support box 1 to provide stable support for the coal mining machine, ensuring that the equipment will not shake due to the impact force of coal mining during the coal mining process; the adjusting handle 2 is installed on the support frame 4; the crushing head on the crushing drum 8 in the coal mining drum 3 mines and preliminarily crushes the coal; when the coal mining machine is started, the adjusting motor adjusts the angle of the adjusting handle 2, and the driving motor drives the mounting frame 11, impeller 12, crushing drum 8, and cover plate 9 to rotate synchronously through the rotating connecting shaft 14, and the crushing drum 8 and the crushing head cut into the coal seam to crush the coal blocks.

[0048] Step 2: Then the water pipe 6 provides water for the entire spray dust suppression system; at the end of the adjusting handle 2, the spray atomizer on the fixed atomizing spray disc 7 is connected to the water pipe 6; when the coal mining work starts, water enters the spray atomizer through the water pipe 6, and the spray atomizer atomizes the water and sprays it out, forming water mist near the coal mining drum 3, thereby reducing the dust generated during the coal mining process; after the rotating motor 19 is started, the rotating motor 19 drives the driving gear to rotate, and the driving gear drives the driven gear ring 21 inside the mounting turntable 20 to rotate, and the mounting turntable 20 rotates accordingly; the transmission liquid inlet pipe 22 delivers water to the mounting turntable In the liquid storage tank 24 on the mounting turntable 20, the water in the liquid storage tank 24 enters the spray dust reduction assembly 23 through the connecting hole; in the spray dust reduction assembly 23, the toggle shaft 26 in the transmission box rotates under the drive of the toggle motor, pushing the electric pushing device in the fixed box to push the liquid guide column 25, and the two cooperate to make the electrostatic atomizing sprayer 27 work; the electrostatic atomizing sprayer 27 uses the principle of electrostatics to atomize water more densely, and the generated water mist is sprayed out through the spray port inside the top cover 28; since the mounting turntable 20 is rotating, the spray dust reduction assembly 23 can perform dust reduction treatment on the coal mining area in all directions.

[0049] Step three, the entrance gap adjustment mechanism 13 is used to adjust the gap of the air vents on the cover plate 9; the extension and retraction of the electric telescopic rod 15 drives the connecting frame 17 to move, and the adjusting top block 18 on the connecting frame 17 adjusts the gap of the air vents accordingly; the retraction guide seat 16 is pulled back under the traction of the spring to ensure the stability of the adjustment process; the impeller 12 on the mounting frame 11 rotates under the drive of the rotating motor 19, and the rotation of the impeller 12 will affect the gas flow inside the coal mining drum 3; when the entrance gap adjustment mechanism 13 adjusts the gap of the air vents, it works together with the rotation of the impeller 12 to control the air pressure inside the coal mining drum 3; when the internal air flow needs to be increased, the air vent gap can be increased, and at the same time, the rotation of the impeller 12 can speed up the air exchange speed, and vice versa; this can ensure the air pressure balance inside the coal mining drum 3, which is conducive to the normal progress of coal mining work, and also helps to improve the effect of spray dust reduction, because the air pressure balance can make the water mist better diffuse inside the coal mining drum 3.

[0050] Step 4: Then, the various components work together. The protective net on the shield prevents larger particles from entering the coal mining drum 3 while also providing certain protection for the internal rotating dust reduction mechanism 10, the spray dust reduction assembly 23, etc.; the top cover 28 in the spray dust reduction assembly 23 is tightly closed by the connecting spring 31 and the magnetic block 32 to prevent external dust from entering, and the inclined brush plate 33 performs a simple cleaning of the electrostatic atomizing sprayer 27 during the opening and closing process of the top cover 28; the abutting sealing gasket 29 at the end of the liquid guide column 25 prevents liquid leakage, and the limiting protrusion 30 of the rotating shaft 26 stabilizes the working state of the electrostatic atomizing sprayer 27; the entire coal mining machine achieves effective dust reduction and self-protection of the equipment while efficiently mining coal through the coordinated work of various components. The abutting sealing gasket 29 ensures the sealing of the liquid guide column 25, and the limiting protrusion 30 helps to control the rotation of the electrostatic atomizing sprayer 27 by the rotating shaft 26. The top cover 28 can slide out of its original position when the mounting turntable 20 rotates rapidly.

[0051] Step five. Finally, the coal mining machine can be adjusted accordingly under different coal mining environments. If the dust content in the coal mining environment is high, the water flow of the water pipe 6 can be appropriately increased, and the rotation speed of the rotating dust reduction mechanism 10 can be adjusted at the same time to increase the frequency and range of the spray dust reduction. If the hardness of the coal seam is large, the rotation speed of the coal mining drum 3 needs to be adjusted, and the power output of the motor box may need to be increased to ensure that the crushing drum 8 and the crushing cutter head can effectively crush the coal seam. The inlet gap adjustment mechanism 13 can also adjust the air vent gap according to actual conditions. The setting of the connecting spring 31 and the magnetic block 32 helps the top cover 28 to be stably reset when the turntable 20 is installed at a low speed. The inclined brush plate 33 can be unfolded after the top cover 28 slides off its original position and drives the inclined brush plate 33 to clean the upper end of the electrostatic atomizing sprayer 27 under the impact of the short-distance atomized liquid to adapt to the requirements of different coal mining environments for internal air pressure and air flow. The use of the device is now completed.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A coal mining machine with a drum dust removal spray mechanism, characterized in that: The invention comprises a control support box (1), wherein an adjusting handle (2) is rotatably provided at each end of the control support box (1), and a coal mining roller (3) and a fixed atomizing spray disc (7) are provided at one end of the two adjusting handles (2) away from the control support box (1), wherein the coal mining roller (3) comprises a shield, a crushing barrel (8), and a cover plate (9), wherein the shield is fixedly provided at the end of the adjusting handle (2), a crushing barrel (8) is rotatably provided inside the shield, a cover plate (9) is fixedly provided at the outer opening of the crushing barrel (8), an air vent is provided on the cover plate (9), and an inlet gap adjusting mechanism (13) is provided on the inner side of the cover plate (9); an impeller (12) is rotatably provided inside the crushing barrel (8); a rotating dust reduction mechanism (10) is rotatably provided on the shield; a water pipe (6) is provided on the adjusting handle (2), and the water pipe (6) is connected to the fixed atomizing spray disc (7) and the rotating dust reduction mechanism (10); The rotary dust reduction mechanism (10) includes a spray dust reduction component (23), and the spray dust reduction component (23) includes an electrostatic atomizing sprayer (27); a top cover (28) is slidably sleeved on the outer side of the spray port at the upper end of the electrostatic atomizing sprayer (27); a plurality of connecting springs (31) are provided on the inner end surface of the top cover (28), the upper ends of the connecting springs (31) are fixedly connected to the top cover (28), and the lower ends of the connecting springs (31) are fixedly connected to magnetic blocks (32), and the lower ends of the magnetic blocks (32) are provided with metal blocks that can be adsorbed by the magnetic blocks (32), and the metal blocks are fixedly arranged at the upper end surface of the electrostatic atomizing sprayer (27), and a circle of inclined brush plates (33) are fixedly arranged on the inner wall of the top cover (28), and the inclined brush plates (33) are in contact with the outer side surface of the spray port.

2. A coal mining machine with a drum dust removal spray mechanism according to claim 1, characterized in that: A support frame (4) is fixedly provided at each end of the control support box (1), and a motor box is fixedly provided at each end of the two adjustment handles (2) close to the control support box (1). An adjustment motor is fixedly provided inside the motor box, and a connecting shaft (5) is fixedly provided on the output shaft of the adjustment motor. The end of the connecting shaft (5) away from the adjustment motor passes through the adjustment handle (2) and is fixedly connected to the support frame (4) on the same side.

3. The coal mining machine with a drum dust removal spray mechanism according to claim 1, characterized in that: A spray atomizer is provided inside the opening of the fixed atomizing spray disc (7), and the liquid inlet end of the spray atomizer is connected to the water delivery pipe (6).

4. The coal mining machine with a drum dust removal spray mechanism according to claim 1, characterized in that: The shield comprises a disc and a bell mouth, wherein the disc is fixedly arranged inside the narrow end of the bell mouth, and the center of the outer side surface of the disc is fixedly connected to the end of the adjusting handle (2); a protective screen is arranged on the disc of the shield; the crushing cylinder (8) is a trumpet-shaped structure, wherein the narrow end of the crushing cylinder (8) is located inside the shield, and the coarse end of the crushing cylinder (8) is located outside the shield, and the cover plate (9) is fixedly arranged on the coarse end of the crushing cylinder (8); a crushing cutter head is fixedly arranged on the outer surface of the crushing cylinder (8); and a circle of air holes arranged in a circular array is arranged on the cover plate (9).

5. A coal mining machine with a drum dust removal spray mechanism according to claim 4, characterized in that: A mounting frame (11) is fixedly provided on the inner side surface of the cover plate (9), and the mounting frame (11) is located on the inner side of the crushing cylinder (8); the mounting frame (11) includes a cylinder and a cross, and both ends of the cylinder remain open. The opening at one end of the cylinder is fixedly connected to the inner side surface of the cover plate (9), and a cross is fixedly provided at the opening at the other end of the cylinder; a rotating connecting shaft (14) is fixedly provided at the center of the cross, and one end of the rotating connecting shaft (14) extends into the interior of the mounting frame (11) and is fixedly provided with the impeller (12); a driving motor is fixedly provided at the center of the inner side surface of the disc of the baffle, and the output shaft of the driving motor is fixedly connected to the end of the rotating connecting shaft (14) away from the impeller (12).

6. A coal mining machine with a drum dust removal spray mechanism according to claim 4, characterized in that: The inlet gap adjustment mechanism (13) includes a retractable guide seat (16), a connecting frame (17), an electric telescopic rod (15), and an adjustment top block (18); the connecting frame (17) includes a circular ring and a circle of radial rods arranged in a circular array, and all radial rods are fixedly connected to the circular ring; the inner ends of all radial rods are fixedly connected to each other, and the outer ends of all radial rods extend to the outside of the circular ring; an adjustment top block (18) is fixedly provided at the outer end of each radial rod of the connecting frame (17), and the adjustment top block (18) corresponds to the air vent on the cover plate (9) one by one. The regulating top block (18) is located on the inner side of the corresponding air vent, and an electric telescopic rod (15) is fixedly provided at the center of the inner side surface of the cover plate (9), and one end of the piston rod of the electric telescopic rod (15) is fixedly connected to the center of the connecting frame (17); a plurality of retraction guide seats (16) are fixedly provided on the connecting frame (17), and the retraction guide seats (16) include an outer tube, an inner rod, and a spring, and the inner rod is slidably inserted into the inner side of the outer tube, and a spring is provided between the inner rod and the outer tube, and the end of the inner rod is fixedly connected to the connecting frame (17), and the end of the outer tube is fixedly connected to the inner side surface of the cover plate (9).

7. The coal mining machine with a drum dust removal spray mechanism according to claim 1, characterized in that: The rotary dust reduction mechanism (10) further comprises a mounting turntable (20), a rotary motor (19), a driven gear ring (21), and a driving gear; a circular ring-shaped mounting turntable (20) is rotatably arranged inside the shield, and a driven gear ring (21) is fixedly arranged on the inner cylindrical surface of the mounting turntable (20); a rotary motor (19) is fixedly arranged on the outer surface of the shield, an output shaft of the rotary motor (19) extends into the shield, and a driving gear is fixedly arranged on the output shaft of the rotary motor (19), and the driving gear is meshed with the driven gear ring (21).

8. A coal mining machine with a drum dust removal spray mechanism according to claim 7, characterized in that: The rotary dust reduction mechanism (10) further includes a transmission liquid inlet pipe (22) and a liquid storage tank (24); a circle of spray dust reduction components (23) is provided on the outer surface of the mounting turntable (20); a circular liquid storage tank (24) is provided on the inner side surface of the mounting turntable (20); a connecting hole is provided on the inner wall of the liquid storage tank (24); the liquid storage tank (24) is connected to the spray dust reduction component (23) through the connecting hole; a circular fixed ring is fixedly provided on the inner side of the baffle, the fixed ring maintains sliding contact with the inner side surface of the mounting turntable (20), a transmission liquid inlet pipe (22) is fixedly provided inside the fixed ring, one end of the transmission liquid inlet pipe (22) passes through the baffle and is connected to the water pipe (6), and the other end of the transmission liquid inlet pipe (22) extends to the inside of the liquid storage tank (24).

9. A coal mining machine with a drum dust removal spray mechanism according to claim 8, characterized in that: The spray dust suppression assembly (23) further includes a transmission box and a push fixing box, wherein the transmission box, the push fixing box and the electrostatic atomizing sprayer (27) are all fixedly arranged on the outer surface of the mounting turntable (20); a toggle shaft (26) driven by a toggle motor is provided in the transmission box, a liquid guide column (25) driven by an electric push device is provided in the push fixing box, the electrostatic atomizing sprayer (27) is installed between the liquid guide column (25) and the toggle shaft (26), and an abutting sealing gasket (29) is provided at the end of the liquid guide column (25); and a limiting protrusion (30) inserted into the electrostatic atomizing sprayer (27) is provided at the side end of the toggle shaft (26).

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