A spray dust-settling device for coal mine respirable dust

Abstract

The present application relates to dust falling device technical field, specifically is a kind of spray dust falling device for coal mine respirable dust, the present application includes base, the top surface of base is fixedly installed with water tank and power box, the top of base is provided with dust collecting pipe;One end of dust collecting pipe is fixedly connected with flow guide cylinder in through type, the bottom end of flow guide cylinder is connected with water tank;The periphery of dust collecting pipe is fixedly connected with two symmetrical distribution bypass pipes in through type;Atomization mechanism is arranged in bypass pipe;Resonance mechanism is arranged in the middle position of dust collecting pipe, dust enrichment assembly is arranged in dust collecting pipe;In the present application, through the cooperation of dust enrichment assembly, resonance mechanism and atomization mechanism, the " enrichment-resonance-atomization " three-stage processing procedure is integrated, the problem of dispersing respirable dust and air film obstruction is solved, and the capture rate of dust particles is significantly improved. Through the connection of flow guide cylinder and water tank, water recycling is realized, and the problem of water resource waste caused by water mist dispersion is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of special equipment manufacturing for environmental protection, in particular to the field of dust reduction device technology, and specifically to a spray dust reduction device for coal mine respirable dust. BACKGROUND

[0002] Coal mine respirable dust refers to inhalable dust with a particle size of ≤5 μm (especially PM2.5), which can penetrate the human lung barrier and cause pneumoconiosis and explosion risk.

[0003] In the prior art, a coal mining dust reduction device is provided in the patent with the application number CN202210787064.5, which includes a device pipe, and further includes a water outlet pipe and a water inlet pipe fixedly connected to the upper and lower ends of the device pipe, wherein the output end of the water outlet pipe is fixedly installed with a spray head; a water receiving groove with an inclined corner is arranged at the upper end, and the lower end of the spray head is fixedly connected to the water receiving groove, wherein a filter plate is installed in the inclined corner, a recovery tank is fixedly connected to the side wall of the device pipe, and a recovery pipe extending into the recovery tank is fixedly connected to the bottom of the water receiving groove; a buffer pipe is slidably connected in the device pipe, wherein the bottom of the device pipe is provided with a buffer pressurizing mechanism connected with the buffer pipe; the device can effectively recover part of the water dripping from the spray head to reduce resource waste, and can also pressurize the water in the device pipe to improve the water spraying effect of the spray head.

[0004] However, the above-mentioned patent still has the following deficiencies when in use:

[0005] I. The above-mentioned device uses spray dust reduction, but micron-level respirable dust can easily bypass the water mist, resulting in insufficient capture efficiency and the dust reduction effect needs to be improved.

[0006] II. The water receiving groove only recovers part of the dripping water, but does not solve the problem of water mist dispersion, and there is still a problem of water resource waste. SUMMARY

[0007] The present application aims to provide a spray dust reduction device for coal mine respirable dust to solve the problems raised in the background art.

[0008] The purpose of the present application can be achieved by the following technical solutions:

[0009] A spray dust reduction device for coal mine respirable dust, comprising a base, a water tank and a power supply box fixedly installed on the top surface of the base, a control module installed on the top surface of the power supply box, a dust collecting pipe arranged above the base, and a support fixedly connected between the periphery of the dust collecting pipe and the top surface of the base;

[0010] One end of the dust collecting pipe close to the water tank is fixedly connected with an inclined flow guide cylinder in a through manner, the top end of the flow guide cylinder is connected with the exhaust pipe of the coal mine chimney system in a through manner, and the bottom end of the flow guide cylinder is connected with the water tank in a through manner.

[0011] The outer periphery of the dust collecting pipe is fixedly connected with two symmetrical bypass pipes in a through manner near the air duct, and the end of the bypass pipe away from the dust collecting pipe is connected with the air inlet pipeline of the coal mine air duct system in a through manner;

[0012] The bypass pipe is provided with an atomizing mechanism;

[0013] The middle part of the dust collecting pipe is provided with a resonance mechanism, and the dust collecting pipe is provided with a dust enrichment assembly.

[0014] Further, the dust enrichment assembly comprises a fan one fixedly installed at the end of the dust collecting pipe away from the air duct, and a cyclone assembly fixedly installed between the inner walls of the dust collecting pipe, and the cyclone assembly is located at the side of the fan one close to the air duct;

[0015] The cyclone assembly comprises an installation column coaxially arranged in the dust collecting pipe, and a plurality of cyclone plates arranged in a circumferential array are fixedly connected between the outer periphery of the installation column and the inner wall of the dust collecting pipe;

[0016] The fan one is used for sucking the dust-containing airflow into the dust collecting pipe, and after passing through the cyclone assembly, the dust is enriched in the area close to the inner wall of the dust collecting pipe through spiral conveying in the dust collecting pipe.

[0017] Further, the resonance mechanism comprises a resonance ring fixedly installed at the middle part of the dust collecting pipe, a plurality of installation grooves are arranged in an axial array on the outer periphery of the resonance ring, and an acoustic wave hole penetrating the inside of the dust collecting pipe is formed at the end of the installation groove close to the dust collecting pipe;

[0018] A piezoelectric ultrasonic transducer electrically connected with the control module is installed in the installation groove.

[0019] Further, the included angle between the bypass pipe and the dust collecting pipe is an acute angle, and a telescopic pipe two is fixedly connected to the end of the bypass pipe away from the dust collecting pipe, and the end of the telescopic pipe two away from the bypass pipe is connected with the air inlet pipeline of the coal mine air duct system in a through manner;

[0020] A fan two blowing air to the dust collecting pipe is fixedly installed at the end of the bypass pipe away from the dust collecting pipe.

[0021] Further, the atomizing mechanism comprises a ring-shaped pipe fixedly installed on the outer periphery of the bypass pipe, a pipe joint penetrating the ring-shaped pipe is fixedly connected to the outer periphery of the ring-shaped pipe, a plurality of shunt pipes arranged in a circumferential array are fixedly connected to the inner side of the ring-shaped pipe in a through manner, the front end of the shunt pipe extends into the bypass pipe, and an ultrasonic atomizing head electrically connected with the control module is installed.

[0022] The atomization mechanism further comprises a liquid pump arranged outside the water tank, a catheter 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.

[0023] Further, the two sides of the water tank are fixedly connected with the convex seats for mounting the liquid pump at positions close to the bottom;

[0024] A plurality of stoppers are fixedly installed in the middle position of the inner wall of the water tank, and a filter screen is installed in the water tank through the stoppers;

[0025] The top end of the water tank is provided with a tank cover, a backflow port is fixedly installed in the top surface of the tank cover in a through manner, a telescopic pipe three is fixedly connected with the top end of the backflow port, and the end of the telescopic pipe three away from the backflow port is fixedly connected with the bottom end of the flow guide cylinder.

[0026] Further, the end of the dust collection pipe away from the flow guide cylinder is fixedly connected with a fixed-point dust collection mechanism, the fixed-point dust collection mechanism comprises a telescopic pipe one fixedly connected with the end of the dust collection pipe, and a horn-shaped air collection cover is fixedly installed at the end of the telescopic pipe one away from the dust collection pipe.

[0027] A support assembly is installed at the end of the periphery of the telescopic pipe one close to the air collection cover.

[0028] Further, the support assembly comprises a bottom plate, a hollow rod is fixedly installed on the top surface of the bottom plate, a sliding rod is slidingly installed in the hollow rod, and locking bolts for limiting the sliding between the hollow rod and the sliding rod are arranged at positions close to the top of the periphery of the hollow rod.

[0029] A damping ball-type hinge seat is fixedly installed at the top end of the sliding rod, a support rod is fixedly connected with the ball of the damping ball-type hinge seat, and a fixing ring fixedly installed on the periphery of the telescopic pipe one is connected with the end of the support rod away from the damping ball-type hinge seat.

[0030] Further, a dust sensor electrically connected with the control module is installed in the dust collection pipe at a position between the resonance mechanism and the connection between the bypass pipe and the dust collection pipe.

[0031] The beneficial effects of the present application are as follows:

[0032] 1. In the present application, the dust enrichment assembly, the resonance mechanism and the atomization mechanism are cooperatively arranged, a three-stage processing flow of "enrichment-resonance-atomization" is integrated, the problems of dispersion of respiratory dust and air film obstruction are solved, and the capture rate of dust particles is significantly improved.

[0033] 2. In the present application, the water circulation is realized through the connection between the flow guide cylinder and the water tank, and the problem of water resource waste caused by water mist scattering is solved.

[0034] 3、The present application is matched with the fan through the acute angle bypass pipe, so that the contact area of the mist droplets and the dust is expanded, the escape area of the single direction spray is avoided, and the dust capture rate is further improved.

[0035] 4、The dust sensor in the dust collecting pipe monitors the dust concentration in real time, and transmits the signal to the control module; the control module dynamically adjusts the opening and closing number of the ultrasonic atomizing head according to the concentration value, for example, the atomizing amount is increased when the PM2.5 concentration is high. The defect that the fixed parameters in the traditional equipment cannot adapt to the concentration fluctuation is solved, the atomizing amount is accurately controlled, and the energy saving function is realized.

[0036] 5、Through the telescopic pipe one and the air collecting hood, the dust is collected at the fixed point target, the coal mine multi-dust source scene is adapted, and the device main body does not need to be frequently moved; through the setting of the supporting assembly, the angle adjustment of the air collecting hood is flexible, and the complex space such as low roadway and equipment gap in the coal mine underground can be adapted. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without creative labor on the premise of not paying creative labor;

[0038] Figure 1 is a structural schematic diagram of the whole of the present application;

[0039] Figure 2 is a three-dimensional schematic diagram of the whole of the present application;

[0040] Figure 3 is Figure 2 is an enlarged view of part A in

[0041] Figure 4 is a structural schematic diagram of the inside of the dust collecting pipe in the present application;

[0042] Figure 5 is a structural schematic diagram of the connection pipe relationship between the bypass pipe and the dust collecting pipe in the present application;

[0043] Figure 6 is a three-dimensional schematic diagram of the resonance mechanism in the present application;

[0044] Figure 7 is a three-dimensional schematic diagram of the atomizing mechanism in the present application;

[0045] Figure 8 is a structural schematic diagram of the water tank in the present application;

[0046] Figure 9 is a three-dimensional schematic diagram of the cyclone assembly in the present application;

[0047] The reference signs in the drawings are as follows:

[0048] 1-base, 2-water tank, 3-liquid pump, 4-conduit, 5-power box, 6-control module, 7-pillar, 8-telescopic pipe one, 9-dust collector, 10-supporting assembly, 11-dust collecting pipe, 12-resonance mechanism, 13-flow guide cylinder, 14-bypass pipe, 15-fixing ring, 16-supporting rod, 17-damping ball-type hinged seat, 18-sliding rod, 19-locking bolt, 20-hollow rod, 21-bottom plate, 22-atomization mechanism, 23-fan two, 24-telescopic pipe two, 25-fan one, 26-cyclone assembly, 27-ring pipe, 28-pipe joint, 29-shunt pipe, 30-ultrasonic atomization head, 31-resonance ring, 32-mounting groove, 34-piezoelectric ultrasonic transducer, 34-acoustic hole, 35-stop block, 36-filter screen, 37-box cover, 38-backflow port, 39-telescopic pipe three, 40-mounting column, 41-cyclone plate, 42-dust sensor. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0050] Embodiment 1

[0051] Please refer to Figure 1 and Figure 2 In the embodiments of the present application, a spray dust-settling device for coal mine respiratory dust comprises a base 1, a water tank 2 and a power box 5 are fixedly installed on the top surface of the base 1, a control module 6 is installed on the top surface of the power box 5, a dust collecting pipe 11 is arranged above the base 1, and a pillar 7 is fixedly connected between the outer periphery of the dust collecting pipe 11 and the top surface of the base 1.

[0052] One end of the dust collecting pipe 11 close to the water tank 2 is fixedly connected with an inclined flow guide cylinder 13 in a through manner, the top end of the flow guide cylinder 13 is connected with the exhaust pipeline of the coal mine chimney system in a through manner, and the bottom end of the flow guide cylinder 13 is connected with the water tank 2 in a through manner.

[0053] Two symmetrically distributed bypass pipes 14 are fixedly connected with the dust collecting pipe 11 in a through manner at a position close to the flow guide cylinder 13, and one end of the bypass pipe 14 away from the dust collecting pipe 11 is connected with the air inlet pipeline of the coal mine chimney system in a through manner.

[0054] The atomization mechanism 22 is arranged in the bypass pipe 14.

[0055] The resonance mechanism 12 is arranged at the middle position of the dust collecting pipe 11, and a dust enrichment assembly is arranged in the dust collecting pipe 11.

[0056] In use, the device body is placed at a designated position in the coal mine, then the top end of the flow guide cylinder 13 is connected through a pipeline with the exhaust pipeline of the coal mine ventilation system, and the bypass pipe 14 is connected through a pipeline with the air inlet pipeline of the coal mine ventilation system away from the end of the dust collection pipe 11;

[0057] When dust is falling, the dust-containing airflow enters the dust collection pipe 11, then enters the flow guide cylinder 13 after passing through the dust enrichment assembly, the resonance mechanism 12 and the connection between the bypass pipe 14 and the dust collection pipe 11 in turn, and then flows into the exhaust pipeline of the coal mine ventilation system under the guidance of the flow guide cylinder 13.

[0058] The dust enrichment assembly makes the dust-containing airflow spiral in the dust collection pipe 11, and the dust is enriched near the inner wall of the dust collection pipe 11 under the action of centrifugal force. When passing through the resonance mechanism 12, the resonance mechanism 12 thins the gas film thickness on the surface of PM2.5 through sound pressure fluctuation; at the same time, the acoustic radiation force drives PM2.5 to collide with each other, and the surface viscosity is enhanced after the gas film is broken, so that small particles are coalesced into larger particles, thereby significantly improving the inertia of the dust, which is convenient for being captured by water mist.

[0059] The sewage formed after atomization and dust falling flows back to the water tank 2 from the bottom end of the flow guide cylinder 13.

[0060] Therefore, in the present application, the three-stage processing process of "enrichment-resonance-atomization" is integrated, and the core problems of dispersed respirable dust and gas film obstruction are solved; and it is directly connected with the coal mine ventilation system without the need to modify the roadway structure, and it is easy to install; at the same time, the inclined flow guide cylinder 13 realizes gas-liquid separation and sewage backflow, avoiding secondary pollution.

[0061] Example 2:

[0062] Please refer to Figure 1 , Figure 2 , Figures 4-6 and Figure 9 , on the basis of example 1, the dust enrichment assembly includes a fan 25 fixedly installed in the dust collection pipe 11 away from the flow guide cylinder 13, and a cyclone assembly 26 fixedly installed between the inner walls of the dust collection pipe 11, the cyclone assembly 26 being located on the side of the fan 25 close to the flow guide cylinder 13.

[0063] The cyclone assembly 26 includes an installation column 40 coaxially arranged in the dust collection pipe 11, and a plurality of cyclone plates 41 arranged in a circumferential array and fixedly connected between the outer periphery of the installation column 40 and the inner wall of the dust collection pipe 11.

[0064] The fan 25 is used to suck the dust-containing airflow into the dust collection pipe 11, and after passing through the cyclone assembly 26, the dust-containing airflow is spirally conveyed in the dust collection pipe 11 to make the dust enriched in the area close to the inner wall of the dust collection pipe 11.

[0065] The resonance mechanism 12 comprises a resonance ring 31 fixedly installed at a middle position of the dust collecting pipe 11, and a plurality of mounting grooves 32 are arranged in an axial array on the periphery of the resonance ring 31, and the mounting grooves 32 are provided with sound wave holes 34 penetrating the inside of the dust collecting pipe 11 at one end close to the dust collecting pipe 11;

[0066] The piezoelectric ultrasonic transducer 33 electrically connected with the control module 6 is installed in the mounting groove 32.

[0067] In the embodiment, the fan one 25 of the dust enrichment assembly inhales the dust-containing airflow into the dust collecting pipe 11, the plurality of cyclone plates 41 (arranged in a circumferential array between the mounting column 40 and the inner wall of the dust collecting pipe 11) of the cyclone assembly 26 make the airflow spiral forward, and the centrifugal force promotes the dust to be enriched on the pipe wall;

[0068] The resonance ring 31 of the resonance mechanism 12 emits sound waves through the piezoelectric ultrasonic transducer 33 (electrically connected with the control module 6) in the mounting groove 32, and acts on the dust enrichment through the sound wave holes 34, and the sound pressure fluctuation thins the PM2.5 gas film, and the acoustic radiation force drives the particles to collide and coalesce into >5μm large particles.

[0069] In the embodiment, the spiral flow guide design of the cyclone plate 41 significantly improves the dust enrichment degree, and provides a high-density target area for subsequent sound wave action; the resonance ring 31 and the piezoelectric ultrasonic transducer 33 are integrated, the sound waves accurately crack the gas film, and the PM2.5 coalescence efficiency is improved.

[0070] Embodiment 3:

[0071] Please refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 7 , on the basis of embodiment 2, the included angle between the bypass pipe 14 and the dust collecting pipe 11 is an acute angle; the bypass pipe 14 is fixedly connected with the telescopic pipe two 24 at the end away from the dust collecting pipe 11, and the end of the telescopic pipe two 24 away from the bypass pipe 14 is connected with the air inlet pipeline of the coal mine wind pipe system in a penetrating manner;

[0072] The fan two 23 fixedly installed in the bypass pipe 14 blows air to the dust collecting pipe 11 at the end away from the dust collecting pipe 11.

[0073] The atomization mechanism 22 comprises a ring-shaped pipe 27 fixedly installed on the periphery of the bypass pipe 14, the ring-shaped pipe 27 is fixedly connected with a pipe joint 28 penetrating the ring-shaped pipe 27 on the periphery, a plurality of shunt pipes 29 are fixedly connected in a circumferential array on the inner side of the ring-shaped pipe 27 in a penetrating manner, the front end of the shunt pipe 29 extends into the bypass pipe 14, and the ultrasonic atomizing head 30 electrically connected with the control module 6 is installed in the shunt pipe 29;

[0074] The atomization mechanism 22 further comprises 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 pipe 27, and the liquid inlet of the liquid pump 3 extends into the water tank 2.

[0075] In the embodiment, the bypass pipe 14 is connected with the dust collecting pipe 11 at an acute angle, and in the atomization mechanism 22, the liquid pump 3 pumps the water in the water tank 2 into the annular pipe 27 through the conduit 4, and then the water is delivered to the ultrasonic atomization head 30 (electrically connected with the control module 6) through the shunt pipe 29 to generate mist droplets; the fan two 23 blows the mist droplets to the dust collecting pipe 11, and the mist droplets fully collide with the dust gas flow processed by resonance at the acute angle intersection, and the double bypass pipes 14 distributed symmetrically form a “wrapping type” mist field to prolong the contact time.

[0076] In the embodiment, the cooperation of the acute angle bypass pipe 14 and the fan two 23 enlarges the contact area between the mist droplets and the dust, and avoids the escape area of the single direction spray; the shunt design of the annular pipe 27 and the shunt pipe 29 ensures uniform atomization, and solves the problem of uneven distribution of mist droplets in the traditional nozzle.

[0077] Embodiment 4:

[0078] Please refer to Figure 4 On the basis of embodiment 3, a dust sensor 42 electrically connected with the control module 6 is arranged in the dust collecting pipe 11 at a position between the resonance mechanism 12 and the position where the bypass pipe 14 is connected with the dust collecting pipe 11.

[0079] In the 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 number of the ultrasonic atomization head 30 according to the concentration value, for example, increases the atomization amount when the PM2.5 concentration is high.

[0080] Therefore, in the embodiment, the defect that the fixed parameters in the traditional equipment cannot adapt to the concentration fluctuation is solved; the atomization amount is accurately controlled, and the energy saving function is achieved.

[0081] Embodiment 5:

[0082] Please refer to Figures 1-3 On the basis of embodiment 4, a fixed-point dust collecting mechanism is fixedly connected to the end of the dust collecting pipe 11 away from the flow guide cylinder 13, the fixed-point dust collecting mechanism comprises a telescopic pipe one 8 fixedly connected with the end of the dust collecting pipe 11, and a horn-shaped air collecting cover 9 is fixedly arranged at the end of the telescopic pipe one 8 away from the dust collecting pipe 11.

[0083] A support assembly 10 is arranged at the end of the periphery of the telescopic pipe one 8 close to the air collecting cover 9.

[0084] In use, the setting of the telescopic pipe 8 can set the dust hood 9 at a specified position (generally at a position with a large amount of dust generation) within a certain range; thus, the device main body does not need to be frequently moved, and the use convenience is improved.

[0085] In this embodiment, the telescopic pipe 8 is connected to the horn-shaped dust hood 9 at the end of the dust collection pipe 11 away from the flow guide cylinder 13, and the length of the telescopic pipe 8 can be adjusted according to the position of the dust source (such as a coal mining machine or a tunneling face), so that the dust hood 9 can be accurately aligned with the high-concentration area; the support assembly 10 fixes the telescopic pipe 8 to ensure the stability of dust suction.

[0086] In this embodiment, the telescopic pipe 8 and the dust hood 9 realize fixed-point targeted dust suction, which is suitable for the multiple dust source scenes in coal mines and does not need to frequently move the device main body.

[0087] Embodiment 6:

[0088] Please refer to Figures 1-3 On the basis of embodiment 5, the support assembly 10 includes a bottom plate 21, the top surface of the bottom plate 21 is fixedly installed with a hollow rod 20, the hollow rod 20 is slidingly installed with a sliding rod 18, and the periphery of the hollow rod 20 is provided with a locking bolt 19 for limiting the sliding between the hollow rod 20 and the sliding rod 18 at a position close to the top.

[0089] The top end of the sliding rod 18 is fixedly installed with a damping ball-type hinge seat 17, the ball body of the damping ball-type hinge seat 17 is fixedly connected with a support rod 16, and the end of the support rod 16 away from the damping ball-type hinge seat 17 is connected with a fixing ring 15 fixedly installed on the periphery of the telescopic pipe 8.

[0090] In this embodiment, the hollow rod 20 and the sliding rod 18 of the support assembly 10 are slidingly matched, and the height is adjusted by the locking bolt 19; the damping ball-type hinge seat 17 at the top end of the sliding rod 18 drives the support rod 16 to rotate, so that the dust hood 9 is adjusted at multiple angles, and the dust source at different heights and directions is adapted.

[0091] Through the setting, the angle of the dust hood 9 is flexibly adjusted, and the complex space such as a low roadway and a device gap in a coal mine can be adapted; wherein the damping ball-type hinge seat 17 ensures that there is no loosening after adjustment.

[0092] Embodiment 7:

[0093] Please refer to Figure 8 On the basis of embodiment 1, the two sides of the water tank 2 are fixedly connected with a convex seat for installing a liquid pump 3 at a position close to the bottom;

[0094] A plurality of stop blocks 35 are fixedly installed in the inner wall of the water tank 2, and a filter screen 36 is installed in the water tank 2 through the stop blocks 35;

[0095] The top end of the water tank 2 is provided with a tank cover 37, the top surface of the tank cover 37 is fixedly provided with a backflow port 38 in a through manner, the top end of the backflow port 38 is fixedly connected with an elastic tube three 39, and the end of the elastic tube three 39 away from the backflow port 38 is fixedly connected with the bottom end of the flow guide cylinder 13.

[0096] In the water tank 2, the tank cover 37, the backflow port 38 and the elastic tube three 39 are arranged to realize the closed connection between the water tank 2 and the flow guide cylinder 13, and the filter screen 36 is arranged to filter the backflow sewage in a certain period, so that the water for generating the spray can be recycled.

[0097] In the embodiment, the water tank 2 is provided with the filter screen 36 through the stop block 35, the backflow sewage of the flow guide cylinder 13 enters the water tank 2 through the elastic tube three 39 and the backflow port 38, the clean water is pumped into the atomization mechanism 22 by the liquid pump 3 after the filter screen 36 filters the sewage, and the tank cover 37 seals the water tank 2 to avoid the pollution caused by the volatilization of the sewage.

[0098] Through the arrangement, the water recycling is realized, the energy consumption is lower than that of the traditional device, and the water supply pressure of the coal mine is reduced; the filter screen 36 intercepts the particulate impurities to reduce the blockage of the ultrasonic atomization head 30; and the sealed backflow design avoids the overflow of the sewage.

[0099] In summary, the present application solves the problem of low capture rate in the prior art through three-stage cooperation of cyclone enrichment, resonance membrane breaking and targeted atomization, and improves the dust suppression effect.

[0100] The dust sensor 42 is linked with the control module 6 and can respond to the concentration fluctuation to avoid excessive spraying or insufficient dust suppression.

[0101] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A spray dust suppression device for respirable dust in coal mines characterised in that, Including base (1), the top surface of base (1) is fixedly installed with water tank (2) and power supply box (5), the top surface of power supply box (5) is installed with control module (6), the upper portion of base (1) is provided with dust collecting pipe (11), the outer periphery between dust collecting pipe (11) and the top surface of base (1) is fixedly connected with support (7); The end of dust collecting pipe (11) close to water tank (2) is fixedly connected with obliquely arranged flow guide cylinder (13) in through type, the top end of flow guide cylinder (13) is connected with exhaust duct of coal mine wind cylinder system in through type, the bottom end of flow guide cylinder (13) is connected with water tank (2) in through type; The outer periphery of dust collecting pipe (11) is fixedly connected with two symmetrically distributed bypass pipes (14) in through type close to flow guide cylinder (13), the end of bypass pipe (14) away from dust collecting pipe (11) is connected with air inlet duct of coal mine wind cylinder system in through type; Atomizing mechanism (22) is arranged in bypass pipe (14); Resonance mechanism (12) is arranged in the middle position of dust collecting pipe (11), dust collecting assembly is arranged in dust collecting pipe (11); The dust collecting assembly includes fan one (25) fixedly installed in dust collecting pipe (11) away from flow guide cylinder (13), and cyclone assembly (26) fixedly installed between the inner walls of dust collecting pipe (11), cyclone assembly (26) is located on the side of fan one (25) close to flow guide cylinder (13); Cyclone assembly (26) includes installation column (40) coaxially arranged in dust collecting pipe (11), a plurality of circumferentially arranged cyclone plates (41) are fixedly connected between the outer periphery of installation column (40) and the inner wall of dust collecting pipe (11); Fan one (25) is used for sucking dust-containing airflow into dust collecting pipe (11), after passing through cyclone assembly (26), the dust-containing airflow is spirally conveyed in dust collecting pipe (11) to make dust enriched in the area close to the inner wall of dust collecting pipe (11); Resonance mechanism (12) includes resonance ring (31) fixedly installed in the middle position of dust collecting pipe (11), a plurality of axially arranged installation grooves (32) are formed in the outer periphery of resonance ring (31), sound wave hole (34) penetrating through the inside of dust collecting pipe (11) is formed in the end of installation groove (32) close to dust collecting pipe (11); Piezoelectric ultrasonic transducer (33) electrically connected with control module (6) is installed in installation groove (32).

2. A spray dust-settling device for respirable dust in coal mines according to claim 1, wherein The included angle between bypass pipe (14) and dust collecting pipe (11) is acute angle, telescopic pipe two (24) is fixedly connected to the end of bypass pipe (14) away from dust collecting pipe (11), the end of telescopic pipe two (24) away from bypass pipe (14) is connected with air inlet duct of coal mine wind cylinder system in through type; Fan two (23) blowing air to dust collecting pipe (11) is fixedly installed in bypass pipe (14) at the position away from dust collecting pipe (11).

3. A spray dust-settling device for respirable dust in coal mines as claimed in claim 1 wherein, The atomization mechanism (22) comprises an annular pipe (27) fixedly installed on the periphery of the bypass pipe (14), a pipe joint (28) fixedly connected with the annular pipe (27) penetrates through the annular pipe (27), a plurality of shunt pipes (29) arranged in a circumferential array are fixedly connected to the inner side of the annular pipe (27) in a penetrating manner, the front ends of the shunt pipes (29) extend into the bypass pipe (14), and an ultrasonic atomization head (30) electrically connected with the control module (6) is installed. The atomization mechanism (22) further comprises a liquid pump (3) arranged outside the water tank (2), a conduit (4) is fixedly connected between the liquid outlet end of the liquid pump (3) and one end of the pipe joint (28) away from the annular pipe (27), and the liquid inlet end of the liquid pump (3) extends into the water tank (2).

4. A spray dust suppression device for respirable dust in coal mines as claimed in claim 3 wherein, The water tank (2) is fixedly connected with a lug (34) for installing the liquid pump (3) at the position close to the bottom on both sides. A plurality of stoppers (35) are fixedly installed in the middle position of the inner wall of the water tank (2), and a filter screen (36) is installed in the water tank (2) through the stoppers (35). A tank cover (37) is arranged at the top end of the water tank (2), a backflow port (38) is fixedly installed in a penetrating manner on the top surface of the tank cover (37), an extension pipe three (39) is fixedly connected to the top end of the backflow port (38), and the end of the extension pipe three (39) away from the backflow port (38) is fixedly connected to the bottom end of the flow guide cylinder (13).

5. A spray dust-settling device for respirable dust in coal mines as claimed in claim 1 wherein, A fixed-point dust collection mechanism is fixedly connected to the end of the dust collection pipe (11) away from the flow guide cylinder (13), the fixed-point dust collection mechanism comprises an extension pipe one (8) fixedly connected to the end of the dust collection pipe (11), and a horn-shaped air collection cover (9) is fixedly installed at the end of the extension pipe one (8) away from the dust collection pipe (11). A support assembly (10) is installed at the end of the extension pipe one (8) close to the air collection cover (9).

6. A spray dust suppression apparatus for respirable dust in coal mines as claimed in claim 5 wherein, The support assembly (10) comprises a bottom plate (21), a hollow rod (20) is fixedly installed on the top surface of the bottom plate (21), a sliding rod (18) is slidingly installed in the hollow rod (20), and lock bolts (19) for limiting the sliding between the hollow rod (20) and the sliding rod (18) are arranged at the position close to the top on the periphery of the hollow rod (20). A damping ball-type hinge seat (17) is fixedly installed at the top end of the sliding rod (18), a support rod (16) is fixedly connected to the ball of the damping ball-type hinge seat (17), and a fixing ring (15) fixedly installed on the periphery of the extension pipe one (8) is connected to the end of the support rod (16) away from the damping ball-type hinge seat (17).

7. A spray dust-settling device for respirable dust in coal mines as claimed in claim 2 wherein, A dust sensor (42) electrically connected with the control module (6) is installed in the dust collection pipe (11) at the position between the resonance mechanism (12) and the connection position of the bypass pipe (14) and the dust collection pipe (11).

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