Onboard spray dust removal device for coal mining machine

Abstract

The utility model relates to the field of spray dust removal, in particular to a machine-mounted spray dust removal device for a coal mining machine, which is characterized in that a conveyor belt for conveying coal and rock products is mounted in the coal mining machine, a fixed column is arranged at the top of one end of the coal mining machine, and a rotary bottom plate is rotatably connected to the bottom of the fixed column; male heads are symmetrically and fixedly connected to the bottom of the rotating bottom plate, clamping grooves are formed in the outer portions of the male heads, quick-release spray heads are symmetrically arranged at the bottom of the rotating bottom plate, steel balls are installed on the two quick-release spray heads at equal intervals, and the multiple steel balls are connected with the corresponding clamping grooves in a clamped mode. According to the onboard spraying dust removal device for the coal mining machine, the rotating bottom plate and the driving assembly are installed at the top end of the conveying belt, so that the quick-release spray head can spray and remove dust, meanwhile, the rotating bottom plate rotates automatically, coal and rock products and coal dust on the conveying belt are effectively removed, the design that steel balls are matched with clamping grooves is adopted between the quick-release spray head and the male head, and the working efficiency is improved. The quick-release nozzle is simple and quick to mount and dismount, and the efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of spray dust suppression, and in particular to an airborne spray dust suppression device for coal mining machines. Background Technology

[0002] A coal mining machine is a large system that integrates mechanics, electrical systems, and hydraulics. It uses a cutting head to cut the mining face to mine and collect coal and rock products. However, coal dust is generated when cutting the mining face, so it is necessary to use an onboard spray dust removal device to spray water mist to remove dust from the working environment.

[0003] Existing equipment typically sprays dust onto the mining face itself during dust suppression, making it difficult to handle coal dust on coal and rock products. Vibrations during the transportation of coal and rock products, as well as collisions and friction between these products, cause coal dust to spread to the working face, obstructing visibility, affecting normal operations, and threatening mine safety. Furthermore, the nozzles of existing equipment are difficult to replace during disassembly and installation, which not only prolongs downtime but also reduces the efficiency of the coal mining machine. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an airborne spray dust removal device for coal mining machines.

[0005] The airborne spray dust suppression device for coal mining machines provided by this utility model includes: a coal mining machine, a cutting head for cutting the mining face installed on one side of the coal mining machine, a conveyor belt for conveying coal and rock products installed inside the coal mining machine, a fixed column at the top of one end of the coal mining machine, the fixed column being located above the conveyor belt, a rotating base plate being rotatably connected to the bottom of the fixed column, male heads being symmetrically fixedly connected to the bottom of the rotating base plate, the male heads having slots on their outer surfaces, quick-release nozzles being symmetrically arranged on the bottom of the rotating base plate, steel balls being installed at equal intervals on both quick-release nozzles, and several steel balls engaging with corresponding slots, a drive assembly being installed on one side of the rotating base plate, the drive assembly driving the rotating base plate to rotate.

[0006] Preferably, the drive assembly includes: a motor, a worm gear, a protective seat, a worm wheel, and a rotating rod. The protective seat is fixedly connected to the top of the inner wall of the fixed column, and the protective seat is rotatably connected to the rotating base plate. The worm wheel is rotatably connected inside the protective seat, and the worm gear is rotatably connected inside the protective seat. The worm wheel and the worm gear are meshed together. The motor is fixedly connected to one end of the coal mining machine. One end of the worm gear extends out of the fixed column and is fixedly connected to the output end of the motor. The rotating rod is rotatably connected inside the protective seat, and the rotating rod is fixedly connected to the worm wheel. One end of the rotating rod extends out of the bottom of the protective seat and is fixedly connected to the rotating base plate.

[0007] Preferably, the outer walls of both quick-release nozzles are provided with a plurality of through holes at equal intervals, and the plurality of steel balls slide within the corresponding plurality of through holes. A spring is slidably connected to the outer wall of the quick-release nozzle, and a sliding sleeve is fitted onto the outer wall of the quick-release nozzle. A baffle is fixedly connected inside the sliding sleeve, and the baffle is slidably connected to the quick-release nozzle. A blocking ring is fixedly connected to the top of the outer wall of the quick-release nozzle, and the blocking ring is used to limit the travel of the sliding sleeve.

[0008] Preferably, the rotating rod, the fixed column, and the worm gear shaft are identical.

[0009] Preferably, the quick-release nozzle output end is tilted at 45 degrees relative to the vertical direction.

[0010] Preferably, the inner diameters at both ends of the plurality of through holes are smaller than the radii of the two steel balls.

[0011] Preferably, a rubber pad is provided on the contact surface between the quick-release nozzle and the front end of the male connector.

[0012] Preferably, the four corners of the outer side of the protective base have a rounded design.

[0013] Compared with related technologies, the airborne spray dust suppression device for coal mining machines provided by this utility model has the following beneficial effects:

[0014] Improved dust removal efficiency: The rotating base plate and drive assembly installed at the top of the conveyor belt enable the quick-release nozzles to rotate during the spray dust removal process. This design not only increases the spray coverage area but also allows coal dust and coal rock products to come into more comprehensive contact with the spray, thereby significantly improving dust removal efficiency and range, and effectively reducing the accumulation of coal dust around coal rock products and the conveyor belt.

[0015] Improved assembly and disassembly efficiency: The quick-release nozzle and male connector are connected by a steel ball and a locking slot, making the installation and disassembly of the quick-release nozzle simple and quick, thus improving efficiency. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the airborne spray dust removal device for coal mining machines provided by this utility model;

[0017] Figure 2 for Figure 1 The diagram shows the structure of the fixed column.

[0018] Figure 3 for Figure 1 The diagram shows the structure of the driving component.

[0019] Figure 4 for Figure 3 The diagram shows the structure of the protective base;

[0020] Figure 5 for Figure 1The diagram shows the structure of the quick-release nozzle.

[0021] The following are the labels in the diagram: 1. Coal mining machine; 2. Cutting head; 4. Conveyor belt; 5. Quick-release nozzle; 6. Fixed column; 7. Male end; 51. Sliding sleeve; 52. Barrier ring; 53. Through hole; 54. Spring; 55. Steel ball; 56. Baffle; 62. Rotating base plate; 64. Worm gear; 65. Protective seat; 66. Rotating rod; 67. Worm wheel; 68. Motor; 71. Slot. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] Please see Figures 1 to 4 A mobile spray dust suppression device for a coal mining machine includes: a coal mining machine 1; a cutting head 2 for cutting the mining face is installed on one side of the coal mining machine 1; a conveyor belt 4 for conveying coal and rock products is installed inside the coal mining machine 1; a fixed column 6 is provided at the top of one end of the coal mining machine 1, the fixed column 6 is located above the conveyor belt 4; a rotating base plate 62 is rotatably connected to the bottom of the fixed column 6; male heads 7 are symmetrically fixedly connected to the bottom of the rotating base plate 62; a slot 71 is provided on the outside of the male head 7; quick-release nozzles 5 are symmetrically provided on the bottom of the rotating base plate 62; steel balls 55 are installed at equal intervals on both quick-release nozzles 5; several steel balls 55 are engaged with the corresponding slots 71; a drive assembly is installed on one side of the rotating base plate 62, the drive assembly drives the rotating base plate 62 to rotate; a rubber pad is provided on the contact surface between the quick-release nozzles 5 and the front end of the male head 7.

[0025] It should be noted that when the coal mining machine 1 is started, the cutting head 2 on the coal mining machine 1 cuts the mining face, and the cut coal and rock products are transported to the rear end through the conveyor belt 4. The high-pressure water flow inside the coal mining machine 1 flows through the inside of the fixed column 6 and through the male head 7 to spray water mist from the quick-release nozzle 5 to remove dust from the coal and rock products. The rubber pad can prevent the high-pressure water flow from seeping out from the contact surface between the quick-release nozzle 5 and the male head 7.

[0026] Please see Figure 2 and Figure 3The drive assembly includes a motor 68, a worm gear 64, a protective seat 65, a worm wheel 67, and a rotating rod 66. The protective seat 65 is fixedly connected to the top of the inner wall of the fixed column 6. The protective seat 65 is rotatably connected to the rotating base plate 62. The worm wheel 67 and the worm gear 64 are rotatably connected inside the protective seat 65. The worm wheel 67 and the worm gear 64 are meshed together. The motor 68 is fixedly connected to one end of the coal mining machine 1. One end of the worm gear 64 extends out of the fixed column 6 and is fixedly connected to the output end of the motor 68. The rotating rod 66 is rotatably connected inside the protective seat 65. The rotating rod 66 is fixedly connected to the worm wheel 67. One end of the rotating rod 66 extends out of the bottom of the protective seat 65 and is fixedly connected to the rotating base plate 62. The rotating rod 66, the fixed column 6, and the worm wheel 67 have the same axis. The four corners of the protective seat 65 have a rounded design.

[0027] It should be noted that: at the same time, the output end of the motor 68 causes the worm 64 to rotate. Since the worm wheel 67 and the worm 64 are meshed, the worm wheel 67 starts to rotate, causing the rotating rod 66, which is fixedly connected to the worm 64, to rotate. The rotating rod 66 drives the rotating base plate 62, which is fixedly connected to it, to rotate, so that the quick-release nozzle 5 at the bottom of the rotating base plate 62 rotates and sprays water mist. The rounded corner design of the protective seat 65 can protect the contact surface of the worm wheel 67 and the worm 64 from the erosion of the high-pressure water flow, and can also reduce the resistance of the high-pressure water flow.

[0028] Please see Figure 1 and Figure 4 Both quick-release nozzles 5 have several through holes 53 equidistantly spaced on their outer walls. Several steel balls 55 slide within the corresponding through holes 53. A spring 54 is slidably connected to the outer wall of the quick-release nozzle 5. A sliding sleeve 51 is fitted onto the outer wall of the quick-release nozzle 5. A baffle 56 is fixedly connected inside the sliding sleeve 51. The baffle 56 is slidably connected to the quick-release nozzle 5. A blocking ring 52 is fixedly connected to the top of the outer wall of the quick-release nozzle 5. The blocking ring 52 is used to limit the stroke of the baffle 56. The output end of the quick-release nozzle 5 is tilted at 45 degrees relative to the vertical direction. The inner diameters of the two ends of the two through holes 53 are smaller than the radii of the two steel balls 55.

[0029] It should be noted that when installing the nozzle, the operator slides the sliding sleeve 51 away from the male head 7. At this time, the quick-release nozzle 5 is inserted into the male head 7. As the outer wall of the male head 7 contacts the inner diameter of the quick-release nozzle 5, the steel ball 55 on the quick-release nozzle 5 is squeezed by the male head 7 and slides from the inside to the outside inside the through hole 53. When the retaining groove 71 on the male head 7 is at the same horizontal line as the steel ball 55, the male head 7 and the quick-release nozzle 5 are tightly fitted. Then, the sliding sleeve 51 is released, and the elastic force of the spring 54 pushes the baffle 56, causing the sliding sleeve 51 to move towards the male head. The 7-direction movement, under the restriction of the blocking ring 52, the sliding sleeve 51 stops sliding. At this time, the baffle 56 pushes the steel ball 55 into the slot 71 and blocks one side of the steel ball 55, so that the steel ball 55 is engaged with the slot 71, completing the quick fixation. The quick-release nozzle 5 output end is designed to be tilted at 45 degrees relative to the vertical direction, which can increase the spraying area and improve the dust removal efficiency. The setting of the blocking ring 52 can not only block the baffle 56 and limit the stroke of the sliding sleeve 51, but also limit the inner diameter of the through hole 53 so that the steel ball 55 can only slide within the through hole 53, preventing the steel ball 55 from falling off.

[0030] The working principle of the airborne spray dust suppression device for coal mining machines provided by this utility model is as follows:

[0031] When the coal mining machine 1 starts, the cutting head 2 on the coal mining machine 1 cuts the mining face. The cut coal and rock products are transported to the rear end by the conveyor belt 4. The high-pressure water flow inside the coal mining machine 1 enters the interior of the fixed column 6 through the water inlet at the top of the fixed column 6. The high-pressure water flow passes through the male head 7 and sprays water mist from the quick-release nozzle 5 to remove dust from the coal and rock products. At the same time, the output end of the motor 68 causes the worm 64 to rotate. Since the worm wheel 67 and the worm 64 are meshed, the worm wheel 67 starts to rotate, causing the rotating rod 66, which is fixedly connected to the worm 64, to rotate. The rotating rod 66 drives the fixed rod 66 to rotate. The rotating base plate 62 rotates, causing the quick-release nozzle 5 at the bottom of the base plate 62 to rotate and spray water mist. The output end of the quick-release nozzle 5 is tilted at 45 degrees relative to the vertical direction to increase the spraying area and improve dust removal efficiency. The rounded corner design of the protective seat 65 can protect the contact surface of the worm gear 67 and worm 64 from the erosion of the high-pressure water flow and also reduce the resistance of the high-pressure water flow. When it is necessary to remove the quick-release nozzle 5, the operator slides the sliding sleeve 51 away from the male head 7. The baffle 56 fixedly connected to the inner wall of the sliding sleeve 51 presses down on the spring 54, and the quick-release nozzle 5 is pulled out. The outer wall of the male head 7 presses against the steel ball 55, causing the steel ball 55 to disengage from the slot 71. The steel ball 55 slides from the inside to the outside inside the through hole 53 until the quick-release nozzle 5 is completely removed. Releasing the sliding sleeve 51 causes the spring 54 to push the baffle 56, and the sliding sleeve 51 returns to its original position, completing the disassembly. When installing the nozzle, the operator slides the sliding sleeve 51 away from the male head 7. At this time, the quick-release nozzle 5 is inserted into the male head 7. As the outer wall of the male head 7 contacts the inner diameter of the quick-release nozzle 5, the steel ball 55 on the quick-release nozzle 5 is pressed by the male head 7 and slides from the inside to the outside inside the through hole 53. When the slot 71 on the male head 7 is at the same level as the steel ball 55, the male head 7 and the quick-release nozzle 5 are tightly fitted together. Then, the sliding sleeve 51 is released, and the spring force of the spring 54 pushes the baffle 56, causing the sliding sleeve 51 to move towards the male head 7. Since the blocking ring 52 prevents the baffle 56 from sliding, the sliding sleeve 51 stops sliding. At this time, the baffle 56 pushes the steel ball 55 into the slot 71 and blocks one side of the steel ball 55, so that the steel ball 55 is engaged with the slot 71, completing the quick fixation. The rubber pad can prevent high-pressure water from seeping out from the contact surface between the quick-release nozzle 5 and the male head 7.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An onboard spray dust suppression device for a coal mining machine, characterized in that, include: A coal mining machine (1) is equipped with a cutting head (2) for cutting the mining face on one side. A conveyor belt (4) for conveying coal and rock products is installed inside the coal mining machine (1). A fixed column (6) is provided at one end of the coal mining machine (1). The fixed column (6) is located above the conveyor belt (4). Rotating base plate (62), the bottom of fixed column (6) is rotatably connected to rotating base plate (62); Male head (7), rotating base plate (62) is symmetrically fixedly connected to the bottom of the male head (7), and the male head (7) has a slot (71) on the outside; Quick-release nozzles (5) are symmetrically provided at the bottom of the rotating base plate (62). Two quick-release nozzles (5) are each equidistantly equipped with steel balls (55), and several steel balls (55) are engaged with corresponding slots (71). The drive assembly is installed on one side of the rotating base plate (62) and drives the rotating base plate (62) to rotate.

2. The onboard spray dust suppression device for coal mining machines according to claim 1, characterized in that, The drive assembly includes: a motor (68), a worm (64), a protective seat (65), a worm wheel (67), and a rotating rod (66). The protective seat (65) is fixedly connected to the top of the inner wall of the fixed column (6). The protective seat (65) is rotatably connected to the rotating base plate (62). The worm wheel (67) is rotatably connected inside the protective seat (65). The worm (64) is rotatably connected inside the protective seat (65). The worm wheel (67) and the worm (64) are meshed. The motor (68) is fixedly connected to one end of the coal mining machine (1). One end of the worm (64) extends out of the fixed column (6) and is fixedly connected to the output end of the motor (68). The rotating rod (66) is rotatably connected inside the protective seat (65). The rotating rod (66) is fixedly connected to the worm wheel (67). One end of the rotating rod (66) extends out of the bottom of the protective seat (65) and is fixedly connected to the rotating base plate (62).

3. The onboard spray dust suppression device for coal mining machines according to claim 1, characterized in that, Both quick-release nozzles (5) have several through holes (53) equidistantly spaced on their outer walls. Several steel balls (55) slide within the corresponding through holes (53). A spring (54) is slidably connected to the outer wall of the quick-release nozzle (5). A sliding sleeve (51) is fitted on the outer wall of the quick-release nozzle (5). A baffle (56) is fixedly connected inside the sliding sleeve (51). The baffle (56) is slidably connected to the quick-release nozzle (5). A blocking ring (52) is fixedly connected to the top of the outer wall of the quick-release nozzle (5). The blocking ring (52) is used to limit the stroke of the baffle (56).

4. The airborne spray dust suppression device for coal mining machines according to claim 2, characterized in that, The rotating rod (66), the fixed column (6), and the worm gear (67) have the same axis.

5. The onboard spray dust suppression device for coal mining machines according to claim 3, characterized in that, The quick-release nozzle (5) has its output end tilted at 45 degrees relative to the vertical direction.

6. The onboard spray dust suppression device for coal mining machines according to claim 3, characterized in that, The inner diameters at both ends of several of the through holes (53) are smaller than the radii of the corresponding several steel balls (55).

7. The onboard spray dust suppression device for coal mining machines according to claim 1, characterized in that, A rubber pad is provided on the front contact surface of the quick-release nozzle (5) and the male nozzle (7).

8. The onboard spray dust suppression device for coal mining machines according to claim 2, characterized in that, The protective base (65) has rounded corners on its four outer corners.

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