Coal mine underground height-adjustable spraying dust-settling device

Abstract

The invention belongs to the technical field of coal mine dust fall, and particularly relates to an underground coal mine height-adjustable spraying dust fall device. The spraying device comprises a spraying device body, the spraying device body comprises atomizing nozzles and further comprises a transverse mounting sleeve, the right end of the mounting sleeve is sleeved with a fixing sleeve, the right end of the fixing sleeve is covered with an end cover, a second mounting opening is formed in the end cover, and a plurality of first mounting openings used for mounting the atomizing nozzles are formed in the portion, between the second mounting opening and the outer wall of the end cover, of the end cover. An adjusting assembly for adjusting the orientation of the atomizing nozzle is arranged in the fixing sleeve, a dust suction pipe is arranged in the fixing sleeve, the inlet end of the dust suction pipe is mounted at the second mounting opening, and gas discharged from the outlet end of the dust suction pipe is filtered, then fed into the mounting sleeve, sequentially blown through the mounting sleeve and the fixing sleeve and then discharged from the first mounting opening; a lifting mechanism is arranged below the mounting sleeve, and a mounting assembly for adjusting the position of the mounting sleeve is mounted at the top of the lifting mechanism. Dust collection can be carried out while spraying dust reduction is carried out, and internal dust collection is carried out through a dust collection air source.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine dust suppression, and in particular relates to an adjustable height spray dust suppression device in underground coal mines. Background Art

[0002] In the process of coal mining, the dust pollution problem in the underground environment has always been an important and thorny problem. In the process of coal mining, the presence of dust has almost penetrated every corner of the underground working environment of the coal mine. Starting from the coal mining stage, with the cutting and crushing of the coal seam, a large number of fine dust particles are generated. These dusts not only come from the coal itself, but also include the wear and decomposition of minerals in the coal seam during the mining process. In the transportation of coal, whether through belt conveyors or mine cars, dust will fly with the movement of coal, further aggravating the dust pollution in the underground space. In addition, tunnel excavation is also an important source of dust generation. When excavation machinery crushes rocks and soil, it will release a large number of dust particles. These dust particles are not only huge in number, but also small and light, and are easily suspended in the air. They permeate the underground space for a long time and are difficult to dissipate. Coal miners face huge health risks in such a high dust concentration environment for a long time. Not only will they inhale a large amount of dust, but these dust particles will also cause direct irritation and damage to the respiratory tract and lungs, gradually accumulate and cause serious occupational diseases such as pneumoconiosis. Pneumoconiosis not only seriously affects the physical health and quality of life of workers, but may also cause workers to lose their ability to work, bringing a heavy burden to their families and society. At the same time, excessive dust concentrations also pose huge safety hazards. When dust reaches a certain concentration in the air, once it encounters a fire source or high temperature, it is very easy to cause an explosion accident. This kind of dust explosion is so powerful that it will not only pose a huge threat to the safe production of coal mines, but may also cause serious casualties and property losses, bringing immeasurable consequences to coal mining enterprises and the entire society. Therefore, how to effectively reduce the dust concentration underground in coal mines, ensure the health and safety of workers, and prevent the occurrence of dust explosion accidents has become one of the key directions of technical research and development in the coal mining industry.

[0003] Traditional dust reduction measures in coal mines mainly rely on relatively simple spray sprinkler devices. These devices are usually installed in fixed positions, and their spray height is fixed, and they cannot be flexibly adjusted according to the actual height of the coal mining surface. For example, during the mining of coal seams at different levels, the height of the working surface may change greatly, but the spray sprinkler device can only maintain the established spray height and cannot adjust the spray height accordingly, resulting in poor dust reduction effect. At the same time, it is also difficult to accurately control the angle and coverage of the spray. Due to the fixed design and installation position of the nozzle, the spray angle cannot be adjusted according to actual needs, and spray dead angles often occur. Around some complex tunnel structures or equipment, the spray cannot cover all areas, so that the dust in some areas cannot be effectively suppressed, resulting in high dust concentrations in some areas, which seriously threatens the improvement of the underground working environment and the respiratory health and safety of workers.

[0004] These devices only use spray to reduce dust, and the settled dust and suspended dust aggregates are not treated, which makes them prone to secondary pollution. Summary of the invention

[0005] The purpose of the present invention is to provide an adjustable height spray dust suppression device in a coal mine, which can perform dust suction while spraying dust suppression and utilize a dust suction air source for internal dust removal.

[0006] The adjustable height spray dust suppression device for underground coal mines comprises a spray device body, the spray device body comprises an atomizing nozzle, and also comprises a transverse mounting sleeve, the right end of the mounting sleeve is mounted with a fixing sleeve, the right end of the fixing sleeve is covered with an end cover, a second mounting opening is arranged on the end cover, a plurality of first mounting openings for mounting the atomizing nozzle are opened on the end cover between the second mounting opening and the outer wall of the end cover, an adjusting component for adjusting the direction of the atomizing nozzle is arranged in the fixing sleeve, a dust suction pipe is arranged in the fixing sleeve, the inlet end of the dust suction pipe is arranged at the second mounting opening, the gas discharged from the outlet end of the dust suction pipe is sent into the mounting sleeve after being filtered, and is discharged from the first mounting opening after blowing through the mounting sleeve and the fixing sleeve in sequence; A lifting mechanism is arranged below the installation sleeve, and a mounting assembly for adjusting the position of the installation sleeve is arranged on the top of the lifting mechanism.

[0007] When in use, the liquid inlet end of the atomizing nozzle is connected to a water source to spray dust on the working environment; while the atomizing nozzle is atomizing and reducing dust, the dust suction pipe absorbs suspended matter in the air to prevent secondary pollution. At the same time, it can also be used alone as dust suction air when there is a lack of water to achieve the effect of dust reduction. The air after dust suction by the dust suction pipe is filtered and sent back to the installation sleeve, which can effectively prevent the accumulation of dust entering the equipment from the first installation port and other places, and effectively reduce the maintenance cost of the device; the adjustment component adjusts the direction of the atomizing nozzle. When the atomizing nozzle on the end cover faces the outside of the end cover, the spray area of ​​the atomizing nozzle increases; when the atomizing nozzle faces the inside of the end cover, the spray area of ​​the atomizing nozzle decreases; the left and right angles and position of the installation sleeve are adjusted by the installation component, so as to facilitate and flexibly adjust the dust reduction position of the atomizing nozzle; the lifting mechanism drives the installation component to rise and fall, and then drives the installation sleeve to rise and fall, thereby realizing the height adjustment of the atomizing nozzle.

[0008] Further, the adjustment assembly includes an adjustment block, a mounting groove is provided on the adjustment block corresponding to each atomizing nozzle, an adjustment frame is fixed on both sides of the groove wall of the mounting groove, a movable shaft is fixed on the left end of the atomizing nozzle corresponding to each adjustment frame, one end of the movable shaft is fixed on the atomizing nozzle, and the other end is independently located in the adjustment frame and can be moved closer to or away from the center of the adjustment block along the adjustment frame; the right end of the atomizing nozzle is rotatably mounted on the end cover at the first mounting port; When the moving shaft approaches the center of the adjusting block, the right end of the atomizing nozzle faces the outside of the end cover; when the moving shaft moves away from the center of the adjusting block, the right end of the atomizing nozzle faces the inside of the end cover.

[0009] The movable axis moves toward or away from the center of the adjusting block along the adjusting frame, and the right end of the atomizing nozzle is adjusted toward the outside or inside of the end cover to realize the spray area of ​​the atomizing nozzle.

[0010] Further, the mounting sleeve comprises a mounting sleeve housing, a connecting sleeve is transversely arranged at the right end of the mounting sleeve housing, and the adjusting block is installed at the right end of the connecting sleeve by bolts; the fixing sleeve comprises a fixing sleeve housing sleeved at the right end of the mounting sleeve housing, a locking ring is arranged at the left end of the fixing sleeve housing, an outer wall of the locking ring is processed with an external thread, notches are arranged at intervals along the circumference of the locking ring, a locking nut threadably matched with the external thread is arranged on the locking ring, and an end cover is installed at the right end of the fixing sleeve housing; The fixed sleeve shell moves leftward along the installation sleeve shell, driving the end cover to move leftward, and the adjustment block does not move, thereby driving the moving shaft to approach the center of the adjustment block along the adjustment frame, and the right end of the atomizing nozzle faces the outside of the end cover; The fixed sleeve shell moves rightward along the installation sleeve shell, driving the end cover to move rightward, while the adjustment block does not move, thereby driving the moving shaft along the adjustment frame away from the center of the adjustment block, and the right end of the atomizing nozzle faces the inner side of the end cover.

[0011] The adjusting block is fixed to the right end of the connecting sleeve by a bolt which is threadedly matched with the connecting sleeve. During the left and right movement of the fixed sleeve shell and the end cover along the mounting sleeve shell, the position of the adjusting block remains unchanged, and the moving shaft can only move toward or away from the center of the adjusting block along the adjusting frame, thereby driving the right end of the atomizing nozzle to rotate, so as to realize the atomizing nozzle facing the outside or inside of the end cover. When the position of the fixed sleeve shell needs to be fixed, the locking nut is tightened to lock the fixed sleeve shell to the outer wall of the mounting sleeve shell. In actual use, the position of the fixed sleeve shell can also remain unchanged, and the way in which the right end cover moves left and right relative to the fixed sleeve shell is changed to realize the moving shaft moving toward or away from the center of the adjusting block along the adjusting frame.

[0012] Furthermore, the bolt is a semi-threaded bolt, the left threaded part is screwed into the connecting sleeve to the left, the adjustment block is located at the smooth rod part on the right side of the semi-threaded bolt, and an electric push rod is installed in the fixed sleeve housing on one side of the connecting sleeve to drive the adjustment block to move left and right along the smooth rod part of the semi-threaded bolt, and the push rod of the electric push rod is connected to the adjustment block.

[0013] The electric push rod drives the adjustment block to move left and right along the smooth rod part of the semi-threaded bolt. The fixed sleeve housing and the end cover are fixed relative to the mounting sleeve housing. The adjustment block drives the moving axis to move closer to or away from the center of the adjustment block along the adjustment frame. The right end of the atomizing nozzle rotates toward the inside or outside of the end cover, saving labor and improving efficiency.

[0014] Furthermore, a partition is provided in the housing of the mounting sleeve, a bundle tube is connected to the partition, the right end of the bundle tube extends from the left end of the mounting sleeve and then passes through the partition to the right, and the right end of the bundle tube includes an air inlet, a first air outlet, a liquid outlet, and a second air outlet; The bolt is a hollow bolt, and the left end of the dust suction pipe passes through the hollow bolt and the connecting sleeve in sequence and is connected to the air inlet; the air inlet end of the atomizing nozzle is connected to the first air outlet through the air pipe, and the liquid inlet end of the atomizing nozzle is connected to the liquid outlet through the water pipe; The left end of the bundle tube is connected to the first air pump, the second air pump and the water pump through the adapter assembly; The first air pump is a bidirectional air pump, the air intake end of the first air pump is connected to the adapter assembly through a filter and communicated with the air inlet; the air outlet end of the first air pump is connected to the adapter assembly and communicated with the second air outlet; the air outlet end of the second air pump is connected to the adapter assembly and communicated with the first air outlet; the liquid inlet end of the water pump is connected to a water source, and the liquid outlet end is connected to the adapter assembly and communicated with the liquid outlet.

[0015] The partition separates the mounting sleeve shell from the right end of the bundle tube, and the wind blown out from the second air outlet blows from the right side of the partition to the fixed sleeve shell on the right side, and is blown out from the first mounting port of the end cover to prevent internal dust accumulation; the combination of the connecting sleeve and the hollow bolt not only facilitates the installation of the adjustment component, but also facilitates the guidance and protection of the dust suction pipe. The dust suction pipe can suck in dust and suspended matter in the air from the second mounting port for further dust removal. It can perform dust suction alone, or together with the atomizing nozzle, it can suck in suspended matter after spray dust reduction.

[0016] Furthermore, the lifting mechanism includes a fixed frame with an opening at the top, a screw rod is vertically arranged in the fixed frame, a telescopic frame is arranged between the screw rod and the fixed frame, the lower end of the telescopic frame is threadedly fitted on the screw rod, and the screw rod rotates to drive the telescopic frame to move upward or downward, and a driving component for driving the screw rod to rotate is arranged at the bottom of the screw rod.

[0017] The screw rod rotates to drive the telescopic frame to move upward or downward, and then telescope in the fixed frame, thereby driving the installation sleeve to rise and fall, thereby realizing the height adjustment of the atomizing nozzle.

[0018] Furthermore, the driving assembly includes a first bevel gear fixed to the lower end of the screw rod, the first bevel gear is rotatably mounted on the inner bottom of the fixed frame, a motor is provided on one side of the first bevel gear, and a second bevel gear meshing with the first bevel gear is connected to the rotating shaft of the motor.

[0019] The motor rotates, the second bevel gear rotates, drives the first bevel gear to rotate, and then drives the lead screw to rotate, and the telescopic frame moves upward or downward along the lead screw.

[0020] Furthermore, the mounting assembly includes a mounting seat for mounting the mounting sleeve, the mounting seat is detachably mounted on the upper end of the telescopic frame via a fixing buckle, and at least three supporting legs for supporting the mounting seat are hingedly mounted on the bottom of the mounting seat.

[0021] Open the fixing buckle, separate the mounting base from the telescopic frame, place the mounting base in a suitable position, and open the supporting legs through the hinges. This method of removing the mounting base from the telescopic frame for use is suitable for locations where the space is relatively small and the dust concentration is relatively high and dust reduction is required. It adapts to the use environment of the device and increases the flexibility of equipment use.

[0022] Furthermore, the mounting seat is a groove structure that is connected to the left and right sides, and the bottom of the left side of the front and rear vertical parts of the mounting seat are both provided with notches. The left end of the mounting sleeve shell is locked in the groove of the mounting seat by a locking assembly. When the locking assembly is locked, the position of the mounting sleeve shell is fixed. When the locking assembly is not locked, the right end of the mounting sleeve shell can swing left and right.

[0023] After the right end of the mounting sleeve shell is swung to a suitable position, it is locked by the locking assembly, thereby adjusting the angle of the atomizing nozzle. The notch facilitates the movement of the bundle tube during the swinging process of the mounting sleeve shell.

[0024] Furthermore, it also includes a cart for placing the filter, the fixing frame, the motor and the water source.

[0025] The filter, fixing frame and motor are all fixed on the loading platform of the cart. The cart can be moved at any time according to the location where dust reduction is required. It is flexible to use and easy to carry.

[0026] Compared with the prior art, the present invention has the following beneficial effects: While the atomizing nozzle is atomizing and reducing dust, the dust suction pipe absorbs suspended matter in the air to prevent secondary pollution. At the same time, it can also be used alone as dust suction air when there is a lack of water to achieve the effect of dust reduction. The air after dust suction by the dust suction pipe is filtered and sent back to the installation sleeve, which can effectively prevent the accumulation of dust entering the equipment from the first installation port and other places, and effectively reduce the maintenance cost of the device; the adjustment component adjusts the direction of the atomizing nozzle. When the atomizing nozzle on the end cover faces the outside of the end cover, the spray area of ​​the atomizing nozzle increases; when the atomizing nozzle faces the inside of the end cover, the spray area of ​​the atomizing nozzle decreases; the installation sleeve is adjusted by the installation component to facilitate the flexible adjustment of the dust reduction position of the atomizing nozzle; the lifting mechanism drives the installation component to rise and fall, and then drives the installation sleeve to rise and fall, thereby realizing the height adjustment of the atomizing nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the main structure of an adjustable height spray dust suppression device in a coal mine; Figure 2 for Figure 1 The enlarged structural diagram at A in the middle; Figure 3 for Figure 1 A schematic diagram of a top view structure; Figure 4 for Figure 1 A schematic diagram of the front view structure of Figure 5 for Figure 4 The structure diagram is enlarged after the section along the BB line; Figure 6 for Figure 4 The middle part is a schematic diagram of the structure after being cut along the CC line; Figure 7 for Figure 4 The middle part is a schematic diagram of the structure after being cut along the DD line; Figure 8 for Figure 2 Schematic diagram of the middle atomizing nozzle after it opens to all sides; Fig. 9 for Figure 2 A schematic diagram of the three-dimensional structure of the middle end cover after enlargement; Fig.10 for Figure 2 A schematic diagram of the three-dimensional structure of the middle adjustment component after enlargement; Fig.11 for Figure 2 A schematic diagram of the three-dimensional structure of the middle fixed sleeve after enlargement; Fig.12 It is a schematic diagram of the three-dimensional structure of an adjustable height spray dust suppression device in a coal mine when the lifting mechanism is used; Fig.13 It is a schematic diagram of the three-dimensional structure of an adjustable height spray dust suppression device in a coal mine when it is used through supporting legs; Fig.14 This is a schematic diagram of the structure of using an electric push rod to adjust the atomizing nozzle.

[0028] The names of the components in the figure are: 1. Cart; 2. Filter; 3. Lifting mechanism; 3.1. Fixed frame; 3.2. First bevel gear; 3.3. Screw rod; 3.4. Second bevel gear; 3.5. Telescopic frame; 4. Motor; 5. Water tank; 6. First air pump; 7. Bundle tube; 7.1. Air inlet; 7.2. First air outlet; 7.3. Liquid outlet; 7.4. Second air outlet; 8. Adapter assembly; 9. Atomizing nozzle; 10. Dust suction pipe; 11. Hollow bolt; 12. End cover; 12.1. Support plate; 12.2. End cover shell; 12.3. Guide column; 12.4. Rotating shaft hole; 12.5. First mounting port; 12.6. Second mounting port; 12.7. Bolt hole; 13. Adjustment assembly ;13.1, adjustment block;13.2, mounting groove;13.3, adjustment frame;13.4, limiting slide groove;13.5, countersunk hole;14, air pipe;15, fixing sleeve;15.1, fixing sleeve shell;15.2, third mounting port;15.3, locking ring;16, locking nut;17, supporting leg;18, hinge;19, mounting seat;20, locking assembly;21, cover;22, partition;23, mounting sleeve;23.1, mounting sleeve shell;23.2, connecting sleeve;23.3, harness hole;24, rotating shaft;25, second air pump;26, water pump;27, pipeline;28, fixing buckle;29, fixing bolt;30, water pipe;31, moving shaft;32, electric push rod. DETAILED DESCRIPTION

[0029] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0030] Example The spray device body in this embodiment refers to the coal mine underground spray dust suppression device in the prior art, which mainly includes a water source system, a spray system, a control system, and a power system. The water source system includes a water tank, a water pump, an air pump, a filter, etc.; the spray system mainly includes a nozzle, a pipeline, a pressure regulating valve, etc., and the nozzle is an air atomizing nozzle; the control system includes a control panel, a sensor, and an automatic control unit; the power system includes an underground power supply or a battery to power the water pump and the control system; the spray device body also includes a support structure for fixing and installing the spray device body. The water pump is connected to the spray system through a pipeline to transport the water in the water tank to the nozzle, and the air pump transports the gas to the nozzle through a pipeline; the control panel is connected to the system that needs to be centrally controlled through a cable, such as adjusting the spray parameters through dust and humidity sensors.

[0031] The adjustable height spray dust suppression device for underground coal mines described in this embodiment is implemented by the following scheme: like Figure 2 As shown, the device includes an atomizing nozzle 9. The atomizing nozzle 9 of this embodiment adopts an air atomizing nozzle with a double-connector structure.

[0032] like Figure 1 As shown, first prepare a cart 1. The left side of the cart 1 is provided with a handrail for convenient pushing, pulling and steering. The specific type can be selected according to the working site environment. Figure 3 As shown, a water tank 5 is fixedly installed; the left half of the front area of ​​the cargo platform of the cart 1 is fixedly installed with a filter 2, and the right half is fixedly installed with a lifting mechanism 3, the lifting mechanism 3 is as shown Figure 1 As shown, it is composed of a fixed frame 3.1, a first bevel gear 3.2, a screw rod 3.3, a second bevel gear 3.4 and a telescopic frame 3.5. The fixed frame 3.1 is an internal hollow structure with an opening at the top. A through hole is provided at the center of the inner bottom surface. The first bevel gear 3.2 is installed at the through hole through a bearing, and the screw rod 3.3 is vertically fixedly connected to the top surface of the first bevel gear 3.2. A circular through hole is provided on the right side of the fixed frame 3.1. The motor 4 is installed on the cargo platform of the cart 1 and is located on the right side of the lifting mechanism 3. The rotating shaft of the motor 4 independently passes through the circular through hole provided on the right side of the fixed frame 3.1 and extends into the fixed frame 3.1. The second bevel gear 3.4 is installed at the end of the rotating shaft extending into the fixed frame 3.1. The second bevel gear 3.4 and the first bevel gear 3.2 are in mutual meshing cooperation. As shown Figure 1As shown, the telescopic frame 3.5 has a hollow structure with an opening at the top. It is located inside the fixed frame 3.1 and is independently located within the fixed frame 3.1. A through hole is provided at the center of the bottom of the telescopic frame 3.5. An internal thread sleeve that is threadedly engaged with the lead screw 3.3 is fixed at this through hole. The sleeve is sleeved on the lead screw 3.3. When the lead screw 3.3 rotates, the telescopic frame 3.5 can axially move in a single degree of freedom along the lead screw 3.3 within the fixed frame 3.1, realizing the telescoping of the telescopic frame 3.5. In actual use, the motor 4 can also be replaced by other structures such as a rocking handle that can rotate the second bevel gear 3.4 engaged with the first bevel gear 3.2.

[0033] As Figure 1 and Figure 2 shown, a mounting seat 19 is connected to the top of the telescopic frame 3.5. As Fig.12 shown, the mounting seat 19 has a "U"-shaped groove structure. As Figure 4 shown, the two vertical parts of the mounting seat 19 are respectively located on the front and back sides. As Figure 4 shown, notches are provided on the left side of the bottoms of the two vertical parts and all open to the right. As Figure 2 shown, a convex block is provided at the bottom of the mounting seat 19. The convex block is matched with the internal dimensions of the telescopic frame 3.5. After the mounting seat 19 is fixed to the telescopic frame 3.5, the lower end of the mounting seat 19 is embedded within the telescopic frame 3.5.

[0034] As Figure 2 shown, at least three support legs 17 are installed at the bottom of the mounting seat 19 through a hinge 18. The support legs 17 are telescopic support rod structures. The specific installation quantity and method can be adjusted according to actual use requirements.

[0035] The mounting seat 19 and the telescopic frame 3.5 are fixed through a fixing buckle 28 as Figure 4 shown. The fixing buckle 28, as Figure 5 and Fig.12 shown, has an inverted "L" - shaped structure. The horizontal part extends into the mounting seat 19 from the notch of the mounting seat 19. The lower end of the vertical part is hinged to the front and back sides near the top of the telescopic frame 3.5, and the fixing buckle 28 is locked with the mounting seat 19 through a wing bolt respectively. Specifically, locking holes are processed on the vertical part of the fixing buckle 28, and threaded holes that are threadedly engaged with the screw rod of the wing bolt are processed at the bottom of the mounting seat 19. After the screw rod of the wing bolt passes through the locking hole, it is screwed into the threaded hole of the mounting seat 19 for tight fixing. It can also be that threaded holes that communicate inside and outside are processed on the front and back vertical parts of the mounting seat 19. The threaded holes are located below the notch. The screw rod of the wing bolt passes through the fixing buckle 28 and the threaded hole in sequence and is locked through a nut. It can also be other detachable connection methods in the prior art.

[0036] As Figure 2As shown, a transverse mounting sleeve 23 is arranged in the mounting seat 19, and the mounting sleeve 23 is composed of a mounting sleeve shell 23.1 and a connecting sleeve 23.2. The mounting sleeve shell 23.1 is a transverse cylindrical structure, which is hollow inside and has an opening on the left side. A cover 21 is installed at the opening, and a circular through hole is opened at the center of the cover 21. A through hole is opened at the center of the right side wall of the mounting sleeve shell 23.1, and a connecting sleeve 23.2 is fixed thereto, and the inner wall of the connecting sleeve 23.2 is processed with an internal thread. Figure 7 As shown, the right side wall of the mounting sleeve housing 23.1 is provided with a plurality of arc-shaped waist-shaped holes distributed in a circumference as the wiring holes 23.3, and the specific number of the arc-shaped waist-shaped holes is determined according to the number of the atomizing nozzles 9.

[0037] A partition plate 22 is vertically fixed to the right half of the installation sleeve housing 23.1. The contact portion between the partition plate 22 and the inner wall of the installation sleeve housing 23.1 is sealed. A through hole communicating with the left and right sides is opened at the center of the partition plate 22.

[0038] The mounting sleeve housing 23.1 is connected to the mounting seat 19 through the locking assembly 20. Figure 2 and Figure 5 As shown, threaded holes are processed on the mounting sleeve housing 23.1 and the upper sides of the front and rear vertical parts of the mounting seat 19, and the locking assembly 20 is composed of a semi-threaded bolt and a nut. The screw rod of the semi-threaded bolt is a smooth rod at one end near the head, and a threaded rod at the other end. The smooth rod part can smoothly pass through the threaded holes of the mounting seat 19 and the mounting sleeve 23, and the threaded rod part cooperates with the nut thread. The mounting seat 19 and the mounting sleeve housing 23.1 are fastened by rotating the nut on one side of the mounting seat 19, so that the mounting sleeve housing 23.1 is clamped and fixed in the mounting seat 19.

[0039] The device also includes a bundle tube 7, such as Figure 5 As shown, the bundle tube 7 is a four-core bundle tube. Figure 2 As shown, the right end of the bundle tube 7 passes through the cover 21 and extends into the mounting sleeve housing 23.1, and is connected to the through hole at the center of the partition 22. The outer wall of the bundle tube 7 is sealed and connected to the through hole. The right end of the bundle tube 7 includes an air inlet 7.1, a first air outlet 7.2, a liquid outlet 7.3 and a second air outlet 7.4.

[0040] like Figure 4As shown, a transfer assembly 8 is installed on the top of the filter 2, and four channels are arranged inside the transfer assembly 8. One side of the transfer assembly 8 is connected to the left end of the bundle tube 7 through a quick-plug connector. The four channels of the transfer assembly 8 are connected to the pipelines in the bundle tube 7 one by one, and the other ends of the corresponding four channels are connected to four separate joints on the transfer assembly 8. The four joints are connected to the first air pump 6, the second air pump 25 and the water storage tank 5 through pipelines 27. The water pump 26, the second air pump 25 and the first air pump 6 are respectively installed on the top surface of the water storage tank 5, wherein the second air pump 25 is a one-way air pump and the first air pump 6 is a two-way air pump.

[0041] The liquid inlet of the water pump 26 is connected to the water tank 5 through the pipeline 27. The water tank 5 is the water source of the water pump 26. The liquid outlet of the water pump 26 is connected to the joint corresponding to the liquid outlet 7.3 on the adapter assembly 8 through the pipeline 27, so as to be connected and communicated with the liquid outlet 7.3 of the bundle tube 7. The second air pump 25 is connected to the joint corresponding to the first air outlet 7.2 on the adapter assembly 8 through the pipeline 27, so as to be connected and communicated with the first air outlet 7.2 of the bundle tube 7. The air outlet of the filter 2 is connected to the air intake of the first air pump 6 through the pipeline 27, and the air inlet of the filter 2 is connected to the joint corresponding to the air inlet 7.1 on the adapter assembly 8 through the pipeline 27, so as to be connected and communicated with the air inlet 7.1 of the bundle tube 7. The air outlet of the first air pump 6 is connected to the joint corresponding to the second air outlet 7.4 on the adapter assembly 8 through the pipeline 27, so as to be connected and communicated with the second air outlet 7.4 of the bundle tube 7.

[0042] like Figure 2 As shown, a fixing sleeve 15 is mounted on the outer wall of the right end of the mounting sleeve housing 23.1; Fig.11 As shown, the fixing sleeve 15 is mainly composed of a fixing sleeve shell 15.1 and a locking ring 15.3. The fixing sleeve shell 15.1 is a cylindrical shell structure as a whole, with both sides being open. A locking ring 15.3 is installed on the left side, and the outer wall of the locking ring 15.3 is processed with external threads, and slots are arranged on the locking ring 15.3 along the circumference. The outer wall of the fixing sleeve shell 15.1 is processed with depressions at equal intervals inwardly to form a plurality of third installation ports 15.2, and each third installation port 15.2 is processed with a through hole that communicates with the left and right, and these through holes are penetrated with fixing bolts 29, and the right end of the fixing sleeve 15 is fixed with the end cover 12 by the fixing bolts 29. A locking nut 16 is mounted on the locking ring 15.3, and the internal thread of the locking nut 16 is threadedly matched with the external thread of the locking ring 15.3. Tightening the locking nut 16 causes the locking ring 15.3 to shrink inward, thereby being fixed on the outer wall of the mounting sleeve shell 23.1.

[0043] The right side of the connecting sleeve 23.2 is connected with an adjusting component 13, which is used to realize the adjustment function of the atomizing nozzle 9. Fig.10As shown, the adjustment component 13 adopts a disc structure design, and the adjustment component 13 includes an adjustment block 13.1, a mounting groove 13.2, an adjustment frame 13.3, a limiting slide groove 13.4 and a countersunk hole 13.5. In this embodiment, four mounting grooves 13.2 are opened at equal intervals along the circumference of the adjustment block 13.1. In actual use, the specific number of the mounting grooves 13.2 is adjusted according to the increase or decrease in the number of atomizing nozzles 9.

[0044] An adjustment frame 13.3 is installed on the two side walls of the installation groove 13.2. The adjustment frame 13.3 adopts an arc-shaped waist hole structure, and the distance between the two ends is determined according to the opening and closing angle that the atomizing nozzle 9 needs to adjust. The outer wall of the adjustment block 13.1 is provided with a limited position slide groove 13.4 in the circumferential direction, and its specific position is consistent with the distribution position of the third installation port 15.2. A countersunk hole 13.5 communicating with the left and right is processed at the center of the adjustment block 13.1. A hollow bolt 11 is installed in the countersunk hole 13.5. After the screw of the hollow bolt 11 passes through the countersunk hole independently, it extends to the left into the connecting sleeve 23.2 and cooperates with the connecting sleeve 23.2 thread to achieve connection.

[0045] The end cover 12 is mounted on the right side of the fixed sleeve housing 15.1. Fig. 9 As shown, the end cover 12 includes an end cover shell 12.2, which is a shell structure with a circular cross-section, an open design on the left side, and a second installation port 12.6 processed at the center of the right side surface. The right end of the outer wall of the end cover shell 12.2 is provided with a first installation port 12.5 that communicates with the inside and outside along the circumferential direction, and the specific number and position of the first installation port 12.5 correspond to the installation groove 13.2. Support plates 12.1 are fixed on both sides of each first installation port 12.5 on the inner side wall of the end cover shell 12.2, and the support plates 12.1 are processed with a shaft hole 12.4. Guide columns 12.3 are fixed to the inner wall of the end cover shell 12.2 along the circumferential direction, and the position of the guide columns 12.3 corresponds to the position of the limiting slide groove 13.4. Bolt holes 12.7 that match the screw thread of the fixing bolt 29 are processed in the guide columns 12.3, and the end cover 12 is fixedly connected to the fixing sleeve 15 through the fixing bolt 29.

[0046] like Figure 2 As shown, the right end of the atomizing nozzle 9 is the mist outlet end, and the left end is the air inlet end and the liquid inlet end. Two rotating shafts 24 are fixed at the center of the outer wall of the atomizing nozzle 9. The rotating shafts 24 are respectively installed in the rotating shaft holes 12.4 on the supporting plates 12.1 on both sides of the first installation opening 12.5, so as to realize the preliminary definition of the atomizing nozzle 9; two moving shafts 31 are also fixed at the left end of the atomizing nozzle 9; Figure 6As shown, the moving shafts 31 are respectively installed in the adjustment frames 13.3 of the adjustment components 13. When the moving shaft 31 approaches the center direction of the adjustment block 13.1 in the adjustment frame 13.3, the atomizing nozzle 9 moves toward the outside direction of the end cover 12 with the rotating shaft 24 as the axis, and the overall radiation spray area formed by the four atomizing nozzles 9 increases; when the moving shaft 31 moves away from the center direction of the adjustment block 13.1 in the adjustment frame 13.3, the atomizing nozzle 9 moves toward the inside direction of the end cover 12 with the rotating shaft 24 as the axis.

[0047] like Figure 2 As shown, the air inlet end of the left end of the atomizing nozzle 9 is connected to the first air outlet 7.2 through the air pipe 14 passing through the corresponding harness hole 23.3, and the liquid inlet end of the left end of the atomizing nozzle 9 is connected to the liquid outlet 7.3 through the water pipe 30 passing through the corresponding harness hole 23.3.

[0048] The dust suction pipe 10 is in the shape of a funnel with its opening facing right. The right end of the dust suction pipe 10, i.e., the funnel mouth, serves as the inlet end of the dust suction pipe 10 and is installed at the second installation opening 12.6 of the end cover 12. The left end of the dust suction pipe 10 is the outlet end, which independently passes through the hollow bolt 11 and the connecting sleeve 23.2 in sequence and is connected to the air inlet 7.1 of the bundle pipe 7.

[0049] The instructions for using the above technical solution are as follows: like Figure 1-Figure 14 As shown, when multiple atomizing nozzles 9 need to be opened and closed, as shown in Figure 2 and Figure 8 As shown, first loosen the locking nut 16, then move the fixing sleeve 15 to the left, and the end cover 12 will also move to the left along the outer wall of the mounting sleeve housing 23.1. During the leftward movement of the end cover 12, the moving shaft 31 is driven to move toward the center direction of the adjustment block 13.1, and the left end of the atomizing nozzle 9 is inward and the right end is outward, so that the mist outlet ends of the four atomizing nozzles 9 are opened outward, and the spray area is increased, thereby realizing precise control of the atomization range. This design enables the atomizing nozzle to flexibly adjust the atomization range according to actual needs, ensuring that the atomization effect covers the required area and improving the dust reduction efficiency.

[0050] When it is necessary to swing the mounting sleeve housing 23.1 left and right to adjust the angle of the atomizing nozzle 9, as shown in FIG. Figure 2 As shown, first loosen the locking assembly 20, and then the mounting sleeve 23 can be swung left and right along the light rod part of the bolt of the locking assembly 20. After adjusting to a suitable position, the locking assembly 20 is locked again, and the left and right angle adjustment of the atomizing nozzle 9 as a whole can be completed. During the angle adjustment process, the bundle tube 7 can move at the notch of the mounting seat 19, which is convenient for the left and right swing of the mounting sleeve shell 23.1. Through the angle adjustment, the atomizing nozzle can be accurately aimed at the target area, ensuring the best atomization effect, and improving the pertinence and effectiveness of dust reduction.

[0051] When the height of the atomizing nozzle 9 needs to be adjusted, Figure 1 and Fig.12 As shown, the motor 4 drives the second bevel gear 3.4 to rotate, and through the meshing of the second bevel gear 3.4 and the first bevel gear 3.2, the first bevel gear 3.2 and the screw rod 3.3 are driven to rotate synchronously. When the screw rod 3.3 rotates in the positive and negative directions, the telescopic frame 3.5 is driven to move up and down along the screw rod 3.3 in the fixed frame 3.1 to achieve telescopic adjustment, thereby achieving height adjustment of the atomizing nozzle 9. If manual adjustment is required, a rocker handle can be used instead of the motor 4, and the telescopic frame 3.5 can be moved up and down by manually rocking the handle in the positive and negative directions, thereby adapting to different working environments and different device cost requirements. This height adjustment method is flexible and convenient, and can quickly adjust the height of the atomizing nozzle according to different working environments and requirements, ensuring the best state of the atomization effect and improving the adaptability and flexibility of dust reduction.

[0052] The dust reduction and dust collection process of the device is as follows: Turn on the water pump 26 and the second air pump 25 on the water storage tank 5. The water pump 26 will transport water to the adapter assembly 8 through the pipeline 27, and then transport it to the atomizing nozzle 9 through the liquid outlet 7.3 of the bundle tube 7. The second air pump 25 will transport gas to the adapter assembly 8 through the pipeline 27, and then transport it to the atomizing nozzle 9 through the first gas outlet 7.2 of the bundle tube 7. Under the joint action of water and gas, the atomizing nozzle 9 starts to work, produces an atomization effect, and performs dust reduction treatment on the dust in the coal mine. The atomization effect of air atomization is better than that of single atomization.

[0053] The dust suction pipe 10 absorbs the atomized dust products in cooperation with the filter 2 and the first air pump 6. This process reduces the residence time of the products in the air on the one hand, and effectively prevents the atomized dust products from being dispersed into the air again on the other hand, reducing the risk of secondary pollution in the working environment. In a dusty working environment, the first air pump 6 can be started intermittently or the suction force can be reduced, so as to flexibly choose whether to absorb the atomized dust or directly use the dust suction mode for dust reduction.

[0054] The air outlet of the first air pump 6 is connected to the adapter assembly 8, and then the air is blown to the right side of the partition 22 through the second air outlet 7.4 of the bundle tube 7, and then blown through the installation sleeve housing 23.1 and the fixed sleeve housing 15.1 in sequence, and blown out from the first installation port 12.5 of the end cover 12, which can effectively prevent dust accumulation in the device, reduce the maintenance cost of the device, and extend the service life of the device.

[0055] When the space of the device is limited, it can also be used flexibly, such as Figure 5 and Fig.13As shown, open the fixing buckle 28, remove the mounting seat 19 from the telescopic frame 3.5, select the mounting seat 19 and place it in a suitable position, open the support leg 17 through the hinge 18, and extend and shorten the support leg 17 according to the use requirements; according to the working environment, the lower end of the support leg 17 can also be made into a pointed structure or a detachable ground-inserting needle to facilitate insertion into the ground and increase stability. This method of removing the mounting seat 19 from the cart 1 for use is suitable for places where the space is relatively small and the dust concentration is relatively high and dust reduction is required, and the cart 1, the filter 2, the water tank 5, the first air pump 6, the second air pump 25 and the water pump 26 are difficult to enter, thereby adapting to the use environment of the equipment and increasing the flexibility of the equipment.

[0056] The opening and closing adjustment of the right end of the atomizing nozzle 9 can also be automatic adjustment, such as Fig.14 As shown, an electric push rod 32 is installed between the mounting sleeve housing 23.1 and the adjustment block 13.1. The electric push rod 32 can realize an automatic push-pull structure by an electric push rod or a pneumatic push rod. The hollow bolt 11 is replaced with a longer semi-threaded hollow bolt, and the bare rod part is the moving stroke of the adjustment component 13. By adjusting the electric push rod 32 to move the left and right positions of the adjustment component 13, the adjustment component 13 moves to the right, the moving shaft 31 moves inward, and the right ends of the multiple atomizing nozzles 9 open outward as a whole; the adjustment component 13 moves to the left, the moving shaft 31 moves outward, and the right ends of the multiple atomizing nozzles 9 close inward, thereby changing the opening and closing angles of the atomizing nozzles 9. It can reduce the links of manual operation and improve the operating efficiency of the equipment.

[0057] An adjustable height spray dust suppression device for underground coal mines can adjust the height and angle of the atomizing nozzle 9, as well as the spray range formed by multiple atomizing nozzles, and can flexibly place the placement of the atomizing nozzle 9. At the same time, it can also choose whether to perform dust suction according to needs, and perform internal dust removal through the second air outlet 7.4.

Claims

1. An adjustable height spray dust suppression device for underground coal mines, comprising a spray device body, the spray device body comprising an atomizing nozzle (9), characterized in that: It also comprises a transverse mounting sleeve (23), the right end of the mounting sleeve (23) being sleeved with a fixing sleeve (15), the right end cover of the fixing sleeve (15) being covered with an end cover (12), the end cover (12) being provided with a second mounting opening (12.6), the end cover (12) being provided with a plurality of first mounting openings (12.5) for mounting an atomizing nozzle (9), an adjusting component (13) for adjusting the direction of the atomizing nozzle (9) being provided in the fixing sleeve (15), a dust suction pipe (10) being provided in the fixing sleeve (15), the inlet end of the dust suction pipe (10) being mounted at the second mounting opening (12.6), the gas discharged from the outlet end of the dust suction pipe (10) being filtered and then sent into the mounting sleeve (23), blown through the mounting sleeve (23) and the fixing sleeve (15) in sequence, and then discharged from the first mounting opening (12.5); A lifting mechanism (3) is provided below the installation sleeve (23), and a mounting assembly for adjusting the position of the installation sleeve (23) is installed on the top of the lifting mechanism (3).

2. The adjustable height spray dust suppression device for underground coal mines according to claim 1 is characterized in that: The adjustment assembly (13) comprises an adjustment block (13.1), a mounting groove (13.2) corresponding to each atomizing nozzle (9) is formed on the adjustment block (13.1), an adjustment frame (13.3) is fixed to both sides of the groove wall of the mounting groove (13.2), a movable shaft (31) is fixed to the left end of the atomizing nozzle (9) corresponding to each adjustment frame (13.3), one end of the movable shaft (31) is fixed to the atomizing nozzle (9), and the other end is independently located in the adjustment frame (13.3) and can move toward or away from the center of the adjustment block (13.1) along the adjustment frame (13.3); the right end of the atomizing nozzle (9) is rotatably mounted on the end cover (12) at the first mounting opening (12.5); When the movable shaft (31) approaches the center of the adjusting block (13.1), the right end of the atomizing nozzle (9) faces the outside of the end cover (12); when the movable shaft (31) moves away from the center of the adjusting block (13.1), the right end of the atomizing nozzle (9) faces the inside of the end cover (12).

3. The adjustable height spray dust suppression device for coal mines according to claim 1 or 2, characterized in that: The mounting sleeve (23) comprises a mounting sleeve shell (23.1), a connecting sleeve (23.2) is transversely arranged at the right end of the mounting sleeve shell (23.1), and the adjusting block (13.1) is mounted on the right end of the connecting sleeve (23.2) by means of bolts; the fixing sleeve (15) comprises a fixing sleeve shell (15.1) sleeved on the right end of the mounting sleeve shell (23.1), a locking ring (15.3) is arranged at the left end of the fixing sleeve shell (15.1), an outer wall of the locking ring (15.3) is processed with an external thread, notches are arranged on the locking ring (15.3) at intervals along the circumference, a locking nut (16) is arranged on the locking ring (15.3) and is threadably matched with the external thread, and the end cover (12) is mounted on the right end of the fixing sleeve shell (15.1); The fixed sleeve housing (15.1) moves leftward along the mounting sleeve housing (23.1), driving the end cover (12) to move leftward, while the adjustment block (13.1) does not move, thereby driving the moving shaft (31) along the adjustment frame (13.3) to approach the center of the adjustment block (13.1), and the right end of the atomizing nozzle (9) faces the outside of the end cover (12); The fixed sleeve housing (15.1) moves rightward along the mounting sleeve housing (23.1), driving the end cover (12) to move rightward, while the adjustment block (13.1) does not move, thereby driving the movable shaft (31) along the adjustment frame (13.3) away from the center of the adjustment block (13.1), and the right end of the atomizing nozzle (9) faces the inner side of the end cover (12).

4. The adjustable height spray dust suppression device for underground coal mines according to claim 3 is characterized in that: The bolt is a semi-threaded bolt, the left threaded portion of which is screwed leftward into the connecting sleeve (23.2), the adjusting block (13.1) is located at the smooth rod portion on the right side of the semi-threaded bolt, and an electric push rod (32) for driving the adjusting block (13.1) to move left and right along the smooth rod portion of the semi-threaded bolt is installed in the fixed sleeve housing (15.1) on one side of the connecting sleeve (23.2), and the push rod of the electric push rod (32) is connected to the adjusting block (13.1).

5. The adjustable height spray dust suppression device for coal mines according to claim 3 or 4, characterized in that: A partition (22) is provided in the installation sleeve shell (23.1), and a bundle tube (7) is connected to the partition (22). The right end of the bundle tube (7) extends from the left end of the installation sleeve (23) and then passes through the partition (22) to the right. The right end of the bundle tube (7) includes an air inlet (7.1), a first air outlet (7.2), a liquid outlet (7.3) and a second air outlet (7.4); The bolt is a hollow bolt (11), and the left end of the dust suction pipe (10) passes through the hollow bolt (11) and the connecting sleeve (23.2) in sequence and is connected to the air inlet (7.1); the air inlet end of the atomizing nozzle (9) is connected to the first air outlet (7.2) through the air pipe (14), and the liquid inlet end of the atomizing nozzle (9) is connected to the liquid outlet (7.3) through the water pipe (30); The left end of the bundle tube (7) is connected to a first air pump (6), a second air pump (25) and a water pump (26) via a switching assembly (8); The first air pump (6) is a bidirectional air pump. The air intake end of the first air pump (6) is connected to the adapter component (8) through the filter (2) and is communicated with the air inlet (7.1); the air outlet end of the first air pump (6) is connected to the adapter component (8) and is communicated with the second air outlet (7.4); the air outlet end of the second air pump (25) is connected to the adapter component (8) and is communicated with the first air outlet (7.2); the liquid inlet end of the water pump (26) is connected to a water source, and the liquid outlet end is connected to the adapter component (8) and is communicated with the liquid outlet (7.3).

6. The adjustable height spray dust suppression device for underground coal mines according to any one of claims 1 to 5, characterized in that: The lifting mechanism (3) comprises a fixed frame (3.1) with an opening at the top, a screw rod (3.3) being vertically arranged in the fixed frame (3.1), a telescopic frame (3.5) being arranged between the screw rod (3.3) and the fixed frame (3.1), the lower end of the telescopic frame (3.5) being threadedly fitted on the screw rod (3.3), the screw rod (3.3) rotating to drive the telescopic frame (3.5) to move upward or downward, and a driving component for driving the screw rod (3.3) to rotate is arranged at the bottom of the screw rod (3.3).

7. The adjustable height spray dust suppression device for underground coal mines according to claim 6 is characterized in that: The driving assembly comprises a first bevel gear (3.2) fixed to the lower end of the screw rod (3.3), the first bevel gear (3.2) being rotatably mounted on the inner bottom of the fixed frame (3.1), a motor (4) being provided on one side of the first bevel gear (3.2), and a second bevel gear (3.4) meshing with the first bevel gear (3.2) being connected to the rotating shaft of the motor (4).

8. The coal mine underground adjustable height spray dust suppression device according to any one of claims 1 to 7, characterized in that: The mounting assembly comprises a mounting seat (19) for mounting a mounting sleeve (23); the mounting seat (19) is detachably mounted on the upper end of the telescopic frame (3.5) via a fixing buckle (28); and at least three supporting legs (17) for supporting the mounting seat (19) are mounted on the bottom of the mounting seat (19) via a hinge (18).

9. The adjustable height spray dust suppression device for underground coal mines according to claim 8, characterized in that: The mounting seat (19) is in the form of a groove structure that is interconnected on the left and right sides. The bottom of the left side of the front and rear vertical parts of the mounting seat (19) is provided with a notch. The left end of the mounting sleeve shell (23.1) is locked in the groove of the mounting seat (19) by a locking assembly (20). When the locking assembly (20) is locked, the position of the mounting sleeve shell (23.1) is fixed. When the locking assembly (20) is not locked, the right end of the mounting sleeve shell (23.1) can swing left and right.

10. The adjustable height spray dust suppression device for underground coal mines according to claim 9, characterized in that: Also included is a cart (1) for placing the filter (2), the fixing frame (3.1), the motor (4) and the water source.

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