Spraying dust-settling device for coal mine respirable dust

Abstract

The invention relates to the technical field of dust falling devices, in particular to a spraying dust falling device for coal mine respirable dust, which comprises a base, a water tank and a power box are fixedly mounted on the top surface of the base, and a dust collecting pipe is arranged above the base; one end of the dust collecting pipe is fixedly connected with a guide cylinder in a through manner; the bottom end of the guide cylinder is connected with the water tank; two symmetrically distributed bypass pipes are fixedly connected to the periphery of the dust collecting pipe in a penetrating manner; an atomizing mechanism is arranged in the bypass pipe; a resonance mechanism is arranged in the middle of the dust collection pipe, and a dust enrichment assembly is arranged in the dust collection pipe; through cooperative arrangement of the dust enrichment assembly, the resonance mechanism and the atomization mechanism, the three-stage treatment process of enrichment, resonance and atomization is integrated, the problems of respiratory dust dispersion and air film obstruction are solved in a targeted mode, and the capture rate of dust particles is remarkably increased. And through the connection of the guide cylinder and the water tank, water recycling is realized, and the problem of water resource waste caused by water mist drifting is solved.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing special equipment for environmental protection, in particular to the technical field of dust suppression devices, and specifically to a spray dust suppression device for respirable dust in coal mines. Background Art

[0002] Respirable dust in coal mines refers to inhalable dust with a particle size of ≤5μm (especially PM2.5), which can penetrate the human alveolar barrier and cause pneumoconiosis and explosion risks.

[0003] The prior art includes a patent with application number CN202210787064.5, which provides a dust reduction device for coal mine mining, including a device pipe, and also including: a water outlet pipe and a water inlet pipe, which are fixedly connected to the upper and lower ends of the device pipe, wherein a nozzle is fixedly installed at the output end of the water outlet pipe; a water receiving trough with an angled opening at the upper end, which is fixedly connected to the lower end of the nozzle, wherein a filter plate is installed in the angled opening, the side wall of the device pipe is fixedly connected to a recovery box, and the bottom of the water receiving trough is fixedly connected to a recovery pipe extending into the recovery box; a buffer pipe, which is slidably connected in the device pipe, wherein a buffer pressurizing mechanism connected to the buffer pipe is provided at the bottom of the device pipe; it can effectively recycle part of the water dripping from the nozzle to reduce resource waste, and can also pressurize the water in the device pipe, thereby improving the water spraying effect of the nozzle.

[0004] However, the above patent still has the following deficiencies when used: 1. The above-mentioned device adopts spraying to reduce dust, but micron-sized respirable dust can easily bypass the water mist, resulting in insufficient capture efficiency and the dust reduction effect needs to be improved.

[0005] Second, the water tank only recycles part of the dripping water, but does not solve the problem of water mist dispersion, and there is still a problem of water waste. Summary of the Invention

[0006] The purpose of the present invention is to provide a spray dust suppression device for respirable dust in coal mines, so as to solve the problems raised in the above background technology.

[0007] The purpose of the present invention can be achieved through the following technical solutions: A spray dust suppression device for respirable dust in coal mines includes a base, a water tank and a power box are fixedly mounted on the top surface of the base, a control module is mounted on the top surface of the power box, a dust collection pipe is provided above the base, and a support is fixedly connected between the outer periphery of the dust collection pipe and the top surface of the base; The dust collecting pipe is fixedly connected to an oblique guide tube at one end close to the water tank, the top of the guide tube is connected to the exhaust pipe of the coal mine wind tube system, and the bottom of the guide tube is connected to the water tank; The outer periphery of the dust collecting pipe is fixedly connected with two symmetrically distributed bypass pipes at a position close to the guide tube, and one end of the bypass pipe away from the dust collecting pipe is connected to the air intake pipe of the coal mine wind tube system; An atomizing mechanism is provided in the bypass pipe; A resonance mechanism is arranged at the middle position of the dust collecting pipe, and a dust enrichment component is arranged in the dust collecting pipe.

[0008] Furthermore, the dust collection assembly includes a fan 1 fixedly mounted in the dust collecting pipe at one end away from the guide cylinder, and a swirl assembly fixedly mounted between the inner walls of the dust collecting pipe, the swirl assembly being located on a side of the fan 1 close to the guide cylinder; The swirl assembly includes a mounting post coaxially arranged in the dust collecting pipe, and a plurality of swirl plates arranged in a circumferential array are fixedly connected between the periphery of the mounting post and the inner wall of the dust collecting pipe; The fan is used to suck the dust-laden airflow into the dust collecting pipe, and after passing through the cyclone component, the dust is spirally transported in the dust collecting pipe so that the dust is enriched in the area close to the inner wall of the dust collecting pipe.

[0009] Furthermore, the resonance mechanism includes a resonance ring fixedly installed in the middle of the dust collecting pipe, the periphery of the resonance ring is provided with a plurality of mounting grooves distributed in an axial array, and the mounting groove is provided with a sonic hole penetrating the interior of the dust collecting pipe at one end thereof close to the dust collecting pipe; A piezoelectric ultrasonic transducer electrically connected to the control module is installed in the installation slot.

[0010] Furthermore, the angle between the bypass pipe and the dust collecting pipe is an acute angle; one end of the bypass pipe away from the dust collecting pipe is fixedly connected to the telescopic pipe 2, and the other end of the telescopic pipe 2 away from the bypass pipe is connected to the air inlet pipe of the coal mine wind duct system; A second blower for blowing air toward the dust collecting pipe is fixedly installed in the bypass pipe at one end away from the dust collecting pipe.

[0011] Furthermore, the atomization mechanism includes an annular tube fixedly mounted on the periphery of the bypass tube, the periphery of the annular tube is fixedly connected to a pipe joint that passes through the annular tube, and the inner side of the annular tube is fixedly connected to a plurality of shunt tubes distributed in a circumferential array, the front end of the shunt tube extends into the bypass tube and is equipped with an ultrasonic atomization head electrically connected to the control module; The atomizing mechanism further comprises a liquid pump arranged outside the water tank, a conduit is fixedly connected between the liquid outlet end of the liquid pump and the end of the pipe joint away from the annular pipe, and the liquid inlet end of the liquid pump extends into the water tank.

[0012] Furthermore, both sides of the water tank are fixedly connected near the bottom with bosses for mounting the liquid pump; A plurality of blocks are fixedly installed at the middle position of the inner wall of the water tank, and a filter is installed in the water tank through the blocks; A box cover is provided at the top of the water tank, and a return port is fixedly installed on the top surface of the box cover. The top of the return port is fixedly connected to a telescopic tube three, and one end of the telescopic tube three away from the return port is fixedly connected to the bottom end of the guide tube.

[0013] Furthermore, one end of the dust collecting pipe away from the guide cylinder is fixedly connected to a fixed-point dust collecting mechanism, and the fixed-point dust collecting mechanism includes a telescopic tube 1 fixedly connected to the end of the dust collecting pipe, and a trumpet-shaped air collecting cover is fixedly installed on the end of the telescopic tube 1 away from the dust collecting pipe; A support assembly is installed on the periphery of the telescopic tube 1 at one end close to the wind collecting cover.

[0014] Furthermore, the support assembly includes a base plate, a hollow rod is fixedly mounted on the top surface of the base plate, a sliding rod is slidably mounted in the hollow rod, and a locking bolt is provided on the periphery of the hollow rod near the top for limiting the sliding between the hollow rod and the sliding rod; A damping spherical hinge seat is fixedly installed on the top of the slide rod, the ball of the damping spherical hinge seat is fixedly connected to a support rod, and one end of the support rod away from the damping spherical hinge seat is connected to a fixing ring fixedly installed on the periphery of the telescopic tube.

[0015] Furthermore, a dust sensor electrically connected to the control module is installed in the dust collecting pipe at a position between the resonance mechanism and the connection between the bypass pipe and the dust collecting pipe.

[0016] Beneficial effects of the present invention: 1. The present invention integrates the three-stage treatment process of "enrichment-resonance-atomization" through the coordinated arrangement of the dust enrichment component, the resonance mechanism and the atomization mechanism, which specifically solves the problems of respiratory dust dispersion and air film obstruction, and significantly improves the capture rate of dust particles.

[0017] 2. The present invention realizes water recycling by connecting the guide tube and the water tank, solving the problem of water waste caused by water mist drifting.

[0018] 3. The present invention cooperates with the second fan through the acute-angle bypass pipe to expand the contact area between the mist droplets and the dust, avoid the escape zone of the single-directional spray, and further improve the dust capture rate.

[0019] 4. A dust sensor inside the dust collection tube monitors dust concentration in real time and transmits a signal to the control module. This module dynamically adjusts the number of times the ultrasonic atomizer opens and closes based on the concentration, for example increasing the atomization volume when PM2.5 concentration is high. This addresses the drawback of traditional equipment where fixed parameters cannot adapt to concentration fluctuations, achieving energy savings through precise control of the atomization volume.

[0020] 5. Through the telescopic tube and the wind collecting hood, fixed-point targeted dust collection is achieved, which is suitable for the scene with multiple dust sources in coal mines, and there is no need to frequently move the main body of the device; through the setting of the support component, the angle of the wind collecting hood can be flexibly adjusted, which can adapt to complex spaces such as low tunnels and equipment gaps in coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, those skilled in the art can derive other drawings based on these drawings without inventive effort. Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 It is a three-dimensional schematic diagram of the present invention as a whole; Figure 3 yes Figure 2 Enlarged view of part A; Figure 4 It is a schematic diagram of the structure inside the dust collecting pipe of the present invention; Figure 5 It is a structural diagram of the connection pipe relationship between the bypass pipe and the dust collecting pipe in the present invention; Figure 6 is a three-dimensional schematic diagram of the resonance mechanism of the present invention; Figure 7 It is a three-dimensional schematic diagram of the atomization mechanism of the present invention; Figure 8 It is a structural schematic diagram of the water tank in the present invention; Figure 9 is a three-dimensional schematic diagram of the swirl assembly of the present invention; The reference numerals in the figures are as follows: 1-base, 2-water tank, 3-liquid pump, 4-conduit, 5-power box, 6-control module, 7-pillar, 8-telescopic tube 1, 9-air hood, 10-support assembly, 11-dust collection tube, 12-resonance mechanism, 13-guide tube, 14-bypass pipe, 15-fixing ring, 16-support rod, 17-damping ball hinge seat, 18-slide rod, 19-locking bolt, 20-hollow rod, 21-base plate, 22-atomization mechanism, 23-Fan 2, 24-Telescopic tube 2, 25-Fan 1, 26-Swirl assembly, 27-Annular tube, 28-Pipe joint, 29-Diverter pipe, 30-Ultrasonic atomizing head, 31-Resonance ring, 32-Mounting slot, 33-Piezoelectric ultrasonic transducer, 34-Sonic hole, 35-Block, 36-Filter, 37-Box cover, 38-Return port, 39-Telescopic tube 3, 40-Mounting column, 41-Swirl plate, 42-Dust sensor. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] Example 1: See also Figure 1 and Figure 2 In an embodiment of the present invention, a spray dust suppression device for respirable dust in coal mines includes a base 1, a water tank 2 and a power box 5 are fixedly mounted on the top surface of the base 1, a control module 6 is mounted on the top surface of the power box 5, a dust collecting pipe 11 is provided above the base 1, and a support 7 is fixedly connected between the outer periphery of the dust collecting pipe 11 and the top surface of the base 1; An oblique guide tube 13 is fixedly connected to one end of the dust collecting pipe 11 near the water tank 2. The top of the guide tube 13 is connected to the exhaust pipe of the coal mine wind tube system, and the bottom of the guide tube 13 is connected to the water tank 2. Two symmetrically distributed bypass pipes 14 are fixedly connected to the outer periphery of the dust collecting pipe 11 near the guide tube 13. The end of the bypass pipe 14 away from the dust collecting pipe 11 is connected to the air intake pipe of the coal mine wind duct system. An atomizing mechanism 22 is provided in the bypass pipe 14; A resonance mechanism 12 is provided in the middle of the dust collecting pipe 11 , and a dust enrichment component is provided in the dust collecting pipe 11 .

[0024] When the present invention is used, the device body is placed at a designated location in a coal mine, and then the top of the guide tube 13 is connected to the exhaust pipe of the coal mine wind duct system through a pipe, and the end of the bypass pipe 14 away from the dust collecting pipe 11 is connected to the air intake pipe of the coal mine wind duct system through a pipe; During dust settling, the dust-laden airflow enters the dust collecting pipe 11, passes through the dust enrichment component, the resonance mechanism 12, and the connection between the bypass pipe 14 and the dust collecting pipe 11, and then enters the guide tube 13. Then, under the guidance of the guide tube 13, it is merged into the exhaust pipe of the coal mine wind tube system. Among them, the dust enrichment component allows the dust-laden airflow to spiral forward in the dust collecting pipe 11, and under the action of centrifugal force, the dust is enriched in a position close to the inner wall of the dust collecting pipe 11. When passing through the resonance mechanism 12, the resonance mechanism 12 thins the thickness of the air film on the surface of PM2.5 through sound pressure fluctuations; at the same time, the acoustic radiation force drives PM2.5 to collide with each other, and the surface viscosity is enhanced after the air film is broken, so that small particles are aggregated into larger particles, thereby significantly improving the inertia of the dust, making it easier to be captured by water mist.

[0025] The sewage formed after atomization and dust reduction flows back into the water tank 2 from the bottom end of the guide tube 13.

[0026] Therefore, in the present invention, a three-stage treatment process of "enrichment-resonance-atomization" is integrated to solve the core problems of respiratory dust dispersion and air film obstruction in a targeted manner; and it is directly connected with the coal mine wind duct system, without the need to modify the tunnel structure, and is easy to install; at the same time, the inclined guide tube 13 realizes gas-liquid separation and sewage backflow to avoid secondary pollution.

[0027] Example 2: See also Figure 1 、 Figure 2 、 Figures 4 to 6 and Figure 9 Based on Example 1, the dust enrichment assembly includes a fan 25 fixedly installed at one end of the dust collecting pipe 11 away from the guide cylinder 13, and a swirl assembly 26 fixedly installed between the inner walls of the dust collecting pipe 11. The swirl assembly 26 is located on the side of the fan 25 close to the guide cylinder 13; The swirl assembly 26 includes a mounting post 40 coaxially arranged in the dust collecting tube 11, and a plurality of swirl plates 41 arranged in a circumferential array are fixedly connected between the periphery of the mounting post 40 and the inner wall of the dust collecting tube 11; The fan 25 is used to suck the dust-laden airflow into the dust collecting pipe 11 , and after passing through the swirl component 26 , the dust is spirally transported in the dust collecting pipe 11 so that the dust is enriched in an area close to the inner wall of the dust collecting pipe 11 .

[0028] The resonance mechanism 12 includes a resonance ring 31 fixedly mounted in the middle of the dust collecting pipe 11. The periphery of the resonance ring 31 is provided with a plurality of mounting grooves 32 distributed in an axial array. The mounting groove 32 is provided with a sonic hole 34 that penetrates the interior of the dust collecting pipe 11 at one end thereof close to the dust collecting pipe 11. A piezoelectric ultrasonic transducer 33 electrically connected to the control module 6 is installed in the installation slot 32 .

[0029] In this embodiment, the fan 1 25 of the dust collection assembly draws the dust-laden airflow into the dust collection pipe 11. The multiple swirl plates 41 of the swirl assembly 26 (circumferentially arranged between the mounting post 40 and the inner wall of the dust collection pipe 11) cause the airflow to spiral forward, and the centrifugal force causes the dust to accumulate on the pipe wall. The resonance ring 31 of the resonance mechanism 12 emits sound waves through the piezoelectric ultrasonic transducer 33 in the mounting groove 32 (electrically connected to the control module 6), which acts on the enriched dust through the sound wave hole 34, thinning the PM2.5 air film through sound pressure fluctuations, and at the same time, the sound radiation force drives the particles to collide and merge into large particles >5μm.

[0030] In this embodiment, the spiral guide design of the swirl plate 41 significantly improves the dust enrichment, providing a high-density target area for subsequent sound wave action; the resonance ring 31 is integrated with the piezoelectric ultrasonic transducer 33, and the sound waves accurately break the air film, thereby improving the PM2.5 aggregation efficiency.

[0031] Example 3: See also Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 7 On the basis of Example 2, the angle between the bypass pipe 14 and the dust collecting pipe 11 is an acute angle; the end of the bypass pipe 14 away from the dust collecting pipe 11 is fixedly connected to the telescopic pipe 24, and the end of the telescopic pipe 24 away from the bypass pipe 14 is connected to the air inlet pipe of the coal mine wind duct system; A second blower 23 for blowing air toward the dust collecting pipe 11 is fixedly installed in the bypass pipe 14 at one end away from the dust collecting pipe 11 .

[0032] The atomizing mechanism 22 includes an annular tube 27 fixedly mounted on the periphery of the bypass tube 14. The periphery of the annular tube 27 is fixedly connected to a pipe joint 28 that passes through the annular tube 27. The inner side of the annular tube 27 is fixedly connected to a plurality of circumferentially arrayed diverter tubes 29. The front end of the diverter tube 29 extends into the bypass tube 14 and is equipped with an ultrasonic atomizing head 30 that is electrically connected to the control module 6. The atomizing mechanism 22 further includes a liquid pump 3 arranged outside the water tank 2 , a conduit 4 is fixedly connected between the liquid outlet of the liquid pump 3 and the end of the pipe joint 28 away from the annular tube 27 , and the liquid inlet of the liquid pump 3 extends into the water tank 2 .

[0033] In this embodiment, the bypass pipe 14 is connected to the dust collecting pipe 11 at an acute angle. In the atomizing mechanism 22, the liquid pump 3 pumps the water in the water tank 2 into the annular pipe 27 through the conduit 4, and transports it to the ultrasonic atomizing head 30 (electrically connected to the control module 6) through the diversion pipe 29 to generate droplets; the fan 23 blows the droplets toward the dust collecting pipe 11, and fully collides with the resonance-treated dust airflow at the acute angle intersection. The symmetrically distributed double bypass pipes 14 form a "wrapped" fog field, which prolongs the contact time.

[0034] In this embodiment, the sharp-angle bypass pipe 14 cooperates with the fan 23 to expand the contact area between the droplets and the dust, avoiding the escape zone of the single-direction spray; the diversion design of the annular pipe 27 and the diversion pipe 29 ensures uniform atomization, solving the problem of uneven droplet distribution in traditional nozzles.

[0035] Example 4: See also Figure 4On the basis of Example 3, a dust sensor 42 electrically connected to the control module 6 is installed in the dust collecting pipe 11 at a position between the resonance mechanism 12 and the connection between the bypass pipe 14 and the dust collecting pipe 11.

[0036] In this embodiment, the dust sensor 42 in the dust collecting pipe 11 monitors the dust concentration in real time and transmits the signal to the control module 6; the control module 6 dynamically adjusts the opening and closing times of the ultrasonic atomizing head 30 according to the concentration value, for example, increasing the atomization amount when the PM2.5 concentration is high.

[0037] Therefore, in this embodiment, the defect that the fixed parameters in the traditional equipment cannot adapt to the concentration fluctuation is solved; by accurately controlling the atomization amount, energy saving function is achieved.

[0038] Example 5: See also Figures 1 to 3 On the basis of Example 4, the end of the dust collecting pipe 11 away from the guide tube 13 is fixedly connected to a fixed-point dust collecting mechanism, and the fixed-point dust collecting mechanism includes a telescopic tube 8 fixedly connected to the end of the dust collecting pipe 11, and the end of the telescopic tube 8 away from the dust collecting pipe 11 is fixedly installed with a trumpet-shaped air collecting cover 9; A support assembly 10 is installed on the periphery of the telescopic tube 8 at one end close to the wind collecting cover 9.

[0039] When in use, the wind collecting hood 9 can be set at a specified position (generally a position where a large amount of dust is generated) within a certain range through the setting of the telescopic tube 8; therefore, there is no need to frequently move the device, which improves the convenience of use.

[0040] In this embodiment, the end of the dust collecting pipe 11 away from the guide tube 13 is connected to the trumpet-shaped wind collecting hood 9 through a telescopic tube 8. The length of the telescopic tube 8 can be adjusted according to the location of the dust source (such as a coal mining machine or an excavation face) to accurately align the wind collecting hood 9 with the high concentration area; the support assembly 10 fixes the telescopic tube 8 to ensure the stability of dust collection.

[0041] In this embodiment, fixed-point targeted dust collection is achieved through the telescopic tube 8 and the wind collecting hood 9, which is suitable for the scene with multiple dust sources in coal mines without the need to frequently move the device body.

[0042] Example 6: See also Figures 1 to 3 Based on Example 5, the support assembly 10 includes a base plate 21, a hollow rod 20 is fixedly mounted on the top surface of the base plate 21, a slide rod 18 is slidably mounted in the hollow rod 20, and a locking bolt 19 is provided near the top of the outer periphery of the hollow rod 20 for limiting the sliding between the hollow rod 20 and the slide rod 18; A damping spherical hinge seat 17 is fixedly installed on the top of the sliding rod 18, and the ball of the damping spherical hinge seat 17 is fixedly connected to the support rod 16. The end of the support rod 16 away from the damping spherical hinge seat 17 is connected to a fixing ring 15 fixedly installed on the periphery of the telescopic tube 8.

[0043] In this embodiment, the hollow rod 20 of the support assembly 10 slides with the slide rod 18, and the height is adjusted by the locking bolt 19; the damping spherical hinge seat 17 at the top of the slide rod 18 drives the support rod 16 to rotate, thereby realizing multi-angle adjustment of the wind collecting hood 9 to adapt to dust sources of different heights and directions.

[0044] With this arrangement, the angle of the wind collecting hood 9 can be flexibly adjusted to adapt to complex spaces such as low tunnels and equipment gaps in coal mines; wherein, the damping ball-shaped hinge seat 17 ensures that there is no looseness after adjustment.

[0045] Example 7: See also Figure 8 On the basis of Example 1, both sides of the water tank 2 are fixedly connected near the bottom with a convex seat for mounting the liquid pump 3; A plurality of blocks 35 are fixedly installed at the middle position of the inner wall of the water tank 2, and a filter 36 is installed in the water tank 2 through the blocks 35; A box cover 37 is provided at the top of the water tank 2, and a return port 38 is fixedly installed on the top surface of the box cover 37. A telescopic tube 39 is fixedly connected to the top of the return port 38, and the end of the telescopic tube 39 away from the return port 38 is fixedly connected to the bottom end of the guide tube 13.

[0046] In the water tank 2, the tank cover 37, the return port 38 and the telescopic tube 39 are arranged so that the water tank 2 and the guide tube 13 are tightly connected. At the same time, the filter screen 36 can filter the returned sewage within a certain period, so that the water used to generate the spray can be recycled.

[0047] In this embodiment, the water tank 2 is installed with a filter screen 36 through a block 35. The sewage returned from the guide tube 13 enters the water tank 2 through the telescopic pipe 3 39 and the reflux port 38. After the sewage is filtered by the filter screen 36, the clean water is pumped back into the atomizing mechanism 22 by the liquid pump 3; the tank cover 37 seals the water tank 2 to prevent sewage volatilization and pollution.

[0048] This arrangement achieves water recycling, is more energy-efficient than conventional devices, and reduces the water supply pressure in coal mines; the filter 36 intercepts particulate impurities, reducing clogging of the ultrasonic atomizing head 30; and the sealed reflux design prevents sewage from overflowing.

[0049] In summary, the present invention solves the problem of low capture rate in the prior art and improves the dust reduction effect through the three-stage synergy of cyclone enrichment, resonance membrane breaking, and targeted atomization.

[0050] The dust sensor 42 is linked to the control module 6 and can respond to concentration fluctuations to avoid excessive spraying or insufficient dusting.

[0051] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A spray dust suppression device for respirable dust in coal mines, characterized in that: The utility model comprises a base (1), a water tank (2) and a power supply box (5) are fixedly mounted on the top surface of the base (1), a control module (6) is mounted on the top surface of the power supply box (5), a dust collecting pipe (11) is arranged above the base (1), and a support (7) is fixedly connected between the periphery of the dust collecting pipe (11) and the top surface of the base (1); An oblique guide tube (13) is fixedly connected to one end of the dust collecting pipe (11) near the water tank (2); the top end of the guide tube (13) is connected to the exhaust pipe of the coal mine wind tube system, and the bottom end of the guide tube (13) is connected to the water tank (2); Two symmetrically distributed bypass pipes (14) are fixedly connected to the periphery of the dust collecting pipe (11) at a position close to the guide tube (13); one end of the bypass pipe (14) away from the dust collecting pipe (11) is connected to the air intake pipe of the coal mine wind duct system; An atomizing mechanism (22) is provided in the bypass pipe (14); A resonance mechanism (12) is provided at the middle of the dust collecting pipe (11), and a dust enrichment component is provided in the dust collecting pipe (11).

2. The spray dust suppression device for coal mine respirable dust according to claim 1, characterized in that: The dust collection assembly comprises a fan 1 (25) fixedly mounted at one end of the dust collecting pipe (11) away from the guide cylinder (13), and a swirl assembly (26) fixedly mounted between the inner walls of the dust collecting pipe (11), wherein the swirl assembly (26) is located on a side of the fan 1 (25) close to the guide cylinder (13); The swirl assembly (26) comprises a mounting post (40) coaxially arranged in the dust collecting tube (11), wherein a plurality of swirl plates (41) arranged in a circumferential array are fixedly connected between the periphery of the mounting post (40) and the inner wall of the dust collecting tube (11); The fan 1 (25) is used to suck the dust-laden airflow into the dust collecting pipe (11), and after passing through the cyclone component (26), the dust is spirally transported in the dust collecting pipe (11) so that the dust is enriched in an area close to the inner wall of the dust collecting pipe (11).

3. The spray dust suppression device for coal mine respirable dust according to claim 1, characterized in that: The resonance mechanism (12) comprises a resonance ring (31) fixedly mounted in the middle of the dust collecting pipe (11); a plurality of mounting grooves (32) arranged in an axial array are provided on the periphery of the resonance ring (31); and a sonic hole (34) penetrating the interior of the dust collecting pipe (11) is provided at one end of the mounting groove (32) close to the dust collecting pipe (11); A piezoelectric ultrasonic transducer (33) electrically connected to the control module (6) is installed in the installation groove (32).

4. The spray dust suppression device for coal mine respirable dust according to claim 1, characterized in that: The angle between the bypass pipe (14) and the dust collecting pipe (11) is an acute angle; one end of the bypass pipe (14) away from the dust collecting pipe (11) is fixedly connected to the second telescopic pipe (24); the other end of the second telescopic pipe (24) away from the bypass pipe (14) is connected to the air inlet pipe of the coal mine wind duct system; A second fan (23) for blowing air toward the dust collecting pipe (11) is fixedly installed in the bypass pipe (14) at one end away from the dust collecting pipe (11).

5. The spray dust suppression device for coal mine respirable dust according to claim 4, characterized in that: The atomizing mechanism (22) comprises an annular tube (27) fixedly mounted on the periphery of the bypass tube (14); the periphery of the annular tube (27) is fixedly connected to a pipe joint (28) that is in communication with the annular tube (27); the inner side of the annular tube (27) is fixedly connected to a plurality of circumferentially arrayed diverter tubes (29); the front end of the diverter tube (29) extends into the bypass tube (14) and is provided with an ultrasonic atomizing head (30) that is electrically connected to the control module (6); The atomizing mechanism (22) further comprises a liquid pump (3) arranged outside the water tank (2), a guide tube (4) being fixedly connected between the liquid outlet end of the liquid pump (3) and the end of the pipe joint (28) away from the annular tube (27), and a liquid inlet end of the liquid pump (3) extending into the water tank (2).

6. The spray dust suppression device for coal mine respirable dust according to claim 5, characterized in that: Both sides of the water tank (2) are fixedly connected at positions close to the bottom with bosses for mounting the liquid pump (3); A plurality of blocks (35) are fixedly installed at the middle position of the inner wall of the water tank (2), and a filter (36) is installed in the water tank (2) through the blocks (35); The top of the water tank (2) is provided with a tank cover (37), a return port (38) is fixedly installed on the top surface of the tank cover (37), the top of the return port (38) is fixedly connected to a telescopic tube (39), and the end of the telescopic tube (39) away from the return port (38) is fixedly connected to the bottom end of the guide tube (13).

7. The spray dust suppression device for coal mine respirable dust according to claim 1, characterized in that: One end of the dust collecting pipe (11) away from the guide tube (13) is fixedly connected to a fixed-point dust collecting mechanism, the fixed-point dust collecting mechanism comprising a telescopic pipe (8) fixedly connected to the end of the dust collecting pipe (11), and a trumpet-shaped air collecting cover (9) is fixedly installed on one end of the telescopic pipe (8) away from the dust collecting pipe (11); A support assembly (10) is installed on the periphery of the telescopic tube (8) at one end close to the wind collecting cover (9).

8. The spray dust suppression device for coal mine respirable dust according to claim 7, characterized in that: The support assembly (10) includes a bottom plate (21), a hollow rod (20) is fixedly mounted on the top surface of the bottom plate (21), a slide rod (18) is slidably mounted in the hollow rod (20), and a locking bolt (19) is provided on the periphery of the hollow rod (20) near the top for limiting the sliding between the hollow rod (20) and the slide rod (18); A damping spherical hinge seat (17) is fixedly mounted on the top end of the slide rod (18), a sphere of the damping spherical hinge seat (17) is fixedly connected to a support rod (16), and an end of the support rod (16) away from the damping spherical hinge seat (17) is connected to a fixing ring (15) fixedly mounted on the periphery of the telescopic tube (8).

9. The spray dust suppression device for coal mine respirable dust according to claim 5, characterized in that: A dust sensor (42) electrically connected to the control module (6) is installed in the dust collecting pipe (11) at a position between the resonance mechanism (12) and the connection point between the bypass pipe (14) and the dust collecting pipe (11).

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