Mining modularized dust removal spraying device for preventing and controlling coal dust

Abstract

The invention discloses a mining modularized dust removal spraying device for preventing and controlling coal dust, and belongs to the technical field of mining equipment. According to the invention, through a designed liquid spraying adjusting mechanism, rapid connection with a liquid cavity of a spraying frame is realized through an expandable and detachable nozzle, dismounting and maintenance are facilitated, a blocked inner cavity of the spraying frame is cleaned and adjusted, and after a clamping ball is pushed to slide in the axis of a clamping sleeve, the clamping ball can be nested in different limiting hoops to adjust the clamping depth, so that the clamping depth of the clamping ball is adjusted; meanwhile, a rear side direction adjusting rod and a first direction adjusting ball can be pulled to pull a rear end adjusting ring, the adjusting ring is stressed to move so that the relative distance of the radial side of the adjusting ring relative to the fixing ring can be adjusted, and the deviation angle of the direction adjusting ring relative to the fixing ring is adjusted through a plurality of clamping balls on the peripheral side and a fixing rod; the bottom space of the spraying frame is fully covered by adjusting the liquid spraying angles of the multiple nozzles at the bottom of the spraying frame, the spraying direction is rapidly adjusted by adjusting the clamping balls to slide in the limiting hoops, follow-up overhaul and maintenance are facilitated, and the arrangement complexity and difficulty are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of mining equipment, and in particular relates to a mining modular dust removal spray device for preventing and controlling coal dust. Background Art

[0002] A large amount of coal dust is generated during coal mining, which not only pollutes the environment but also may cause serious damage to the miners' respiratory system. In order to prevent coal dust from overflowing, spray devices are installed at key locations such as mining faces and transportation tunnels, and spraying is performed regularly or irregularly, which can effectively reduce the concentration of coal dust in the air.

[0003] Chinese patent publication number CN112627877B discloses a two-fluid sequential atomizing long-range dust collector for drilling and blasting tunnels in mining. It includes a box body with different shapes suitable for various environmental conditions, a plurality of two-fluid sequential atomizing long-range guns with adjustable angles are installed at the front of the box body, and the long-range ports of the two-fluid sequential atomizing long-range guns extend out of the box body, and a compressed gas filter collection device is installed at the rear of the box body, and each output port of the gas filter collection device is connected to the air inlet of each two-fluid sequential atomizing long-range gun at the front by a pipeline, and the inlet end of the gas filter collection device extends out of the box body and is connected to the main air supply pipeline of the air compressor; and a water inlet filter collection device is installed at the rear of the box body, and each output port of the water inlet filter collection device is connected to the water inlet of each two-fluid sequential atomizing long-range gun at the front by a pipeline, and the water inlet interface of the water inlet filter collection device extends out of the box body and is externally connected to the main water supply pipeline. The above scheme uses compressed gas to atomize the spray liquid, but due to the different cross-sectional shapes of the tunnels, a single atomization spray angle often cannot cover the spray dust reduction area well. In addition, when the working face area changes during continuous tunnel excavation, the fixed nozzle cannot match the updated working face area. Therefore, dust reduction gaps are likely to exist, and there is room for improvement. Summary of the invention

[0004] The purpose of the present invention is to propose a modular dust removal spray device for coal dust prevention and control in mining in order to solve the problem that a single atomization spray angle often cannot cover the spray dust reduction area well, and when the working face area changes during continuous tunnel excavation, the fixed nozzle cannot match the updated working face area.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A modular dust removal spray device for preventing and controlling coal dust in a mine, comprising a plurality of spray racks, wherein the plurality of spray racks are connected to each other through an expansion mechanism, wherein the plurality of spray racks are adjusted in installation direction through the expansion mechanism to switch the spray angle, wherein a plurality of liquid spray adjustment mechanisms are arranged in an array along the width direction at the bottom of the spray rack, wherein a nozzle is installed in the liquid spray adjustment mechanism, wherein the nozzle is connected to a liquid cavity in the spray rack, and wherein the installation angle of the nozzle at the bottom of the spray rack is adjusted through the liquid spray adjustment mechanism to switch the liquid spray angle;

[0007] The expansion mechanisms on both sides are equipped with protective brackets through the expansion frame and another expansion mechanism. A liquid mixing mechanism is installed in the protective bracket. The liquid mixing mechanism is connected to an external water supply device and pumps water into the nozzle.

[0008] As a further description of the above technical solution:

[0009] The liquid spray adjustment mechanism includes a fixed ring and an adjustment ring, the fixed ring is connected to the liquid outlet at the bottom of the spray rack, a plurality of adjustment rods are arranged on the circumference of the adjustment ring, the adjustment rods are adjustably installed at corresponding positions on one side of the fixed ring, the inner cavity of the adjustment ring is connected to the outside of the nozzle, one end of the nozzle is connected to an opening on one side of the fixed ring through a bellows, a liquid inlet pipe is connected to the rear side of the fixed ring, the other end of the liquid inlet pipe extends into the liquid cavity of the spray rack, and the nozzle installation position is adjusted by the adjustment rods on the circumference of the adjustment ring.

[0010] As a further description of the above technical solution:

[0011] The first ball bearing seat is connected to the four sides of one side of the adjusting ring, and the first adjustment ball is rotatably connected in the first ball bearing seat. One side of the first adjustment ball is connected to one end of the adjustment rod, and the other end of the adjustment rod is connected to the second adjustment ball. The second adjustment ball is rotatably connected to the second ball bearing seat outside, and one end of the second ball bearing seat is connected to a fixing rod, and the other end of the fixing rod is connected to a clamping ball. A plurality of clamping sleeves are connected to the position of the fixing rod corresponding to the side of the fixing ring away from the adjusting ring, and the clamping balls are inserted and clamped in the clamping sleeves.

[0012] As a further description of the above technical solution:

[0013] The inner cavity of the clamping sleeve is connected with a plurality of limiting hoops at equal distances along the axis, and the limiting position of the direction-adjusting rod is adjusted by clamping the clamping ball in the limiting hoops at corresponding positions.

[0014] As a further description of the above technical solution:

[0015] The end of the bellows is connected with a closed ring, one side of the closed ring is connected with a plurality of filling plates equidistantly along the axis, one side of the liquid inlet pipe is connected with a closed seat, and the filling plates and the closed ring are closed and connected in the closed seat.

[0016] As a further description of the above technical solution:

[0017] The nozzle cavity is equipped with a mixing mechanism, which includes a mixing seat. The mixing seat is installed on one side of the nozzle cavity. One side of the mixing seat is symmetrically provided with an overflow groove. The medium entering the nozzle is sprayed out in a spiral shape through the symmetrical overflow groove.

[0018] As a further description of the above technical solution:

[0019] A guide piece is rotatably connected to the inner cavity side wall of the overflow groove, and the guide piece covers one side of the overflow groove at a spiral angle. The medium in the frequency-vibrating atomizing nozzle passes through the guide piece. A spring piece is attached to one side of the guide piece, and a mounting seat is connected to the end of the spring piece. The mounting seat is installed on the side of the mixing flow seat away from the spray rack. An arc-shaped slow flow portion is opened on one side of the overflow groove.

[0020] As a further description of the above technical solution:

[0021] The expansion mechanism includes a rotating block and a rotating frame, the rotating frame has a U-shaped cross-section, the rotating block is rotatably connected to the inner cavity of the rotating frame, one side of the rotating block is connected to a fixed disk, and the side away from the fixed disk and the rotating frame is connected to the corresponding position of the expansion frame or the end of the spray frame at a corresponding position, a limiting ring is embedded in the top of the rotating block, the inner cavity of the limiting ring is provided with a plurality of second limiting grooves equidistantly along the axis, the position of the rotating frame corresponding to the limiting ring is provided with a first insertion hole, the inner cavity of the first insertion hole is provided with a plurality of first limiting grooves equidistantly around the axis, an insertion rod is inserted and connected between the first insertion hole and the inner cavity of the limiting ring, a plurality of insertion blocks are connected to the outer peripheral side of the insertion rod, the insertion block is penetrated between the second limiting groove and the first limiting groove, and the relative rotation of the rotating block and the rotating frame is limited by the insertion of the insertion rod.

[0022] As a further description of the above technical solution:

[0023] The bottom end of the insertion rod is connected to a telescopic rod, and the other end of the telescopic rod is connected to a fixed block. The fixed block is connected to a chamber opened at the top of the rotating block. A first spring is sleeved on the outside of the telescopic rod, and the two ends of the first spring are respectively connected to corresponding positions of the fixed block and one side of the end of the insertion rod. A pipe hole for extending the pipeline is opened through one side of the rotating block and the fixed disk.

[0024] As a further description of the above technical solution:

[0025] The liquid mixing mechanism comprises a liquid pump, which is arranged at the bottom of the inner cavity of the protective bracket. The top liquid outlet of the liquid pump device is connected with a filter cavity. The top of the filter cavity is extended into the spray rack through a connecting pipe passing through a plurality of rotating blocks and a pipe hole on one side of the rotating rack in sequence.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In the present invention, the designed spray adjustment mechanism can realize quick connection with the liquid cavity of the spray rack through the expandable and detachable nozzle, which is convenient for disassembly and maintenance, and the blocked inner cavity of the spray rack can be cleaned and adjusted. After the card ball is pushed to slide in the axis of the card sleeve, the card ball can be nested in different limit hoop to adjust the card depth, and at the same time, the rear side adjustment rod and the first adjustment ball can be pulled to pull the rear end adjustment ring. The adjustment ring is forced to move and can adjust the relative spacing of its radial side relative to the fixed ring. The offset angle of the adjustment ring compared to the fixed ring is adjusted by multiple card balls on the circumferential side and the fixed rod to adjust the spray direction. The spray angle of multiple nozzles at the bottom of the spray rack is adjusted to fully cover the bottom space of the spray rack. The spray direction is quickly adjusted by adjusting the card ball to slide in the limit hoop, which is convenient for subsequent inspection and maintenance and reduces the complexity of the layout.

[0028] 2. In the present invention, through the designed expansion mechanism, after the peripheral insertion block is separated from the limit ring by pulling the insertion rod, the relative rotation position is adjusted by rotating the rotating block or the rotating frame, which is beneficial to regulating the relative angle of the spray rack or the expansion rack connected on both sides. The assembly arc is adjusted by the relatively rotatable limited rotating block and the rotating frame, which is beneficial to adjust the installation angle when the working surface area changes. Through the setting of the expansion mechanism, the arrangement and use of the dust removal spray will not be affected by the position change of the tunnel area. After the insertion block is inserted into the limit ring and the first limit groove on the side of the first insertion hole, the relative rotation of the limited rotating block relative to the rotating frame is improved to improve the stability after assembly. The medium pumping pipeline can be led out from the bottom mixing mechanism and then pass through the corresponding control in sequence to extend into the spray rack, which is beneficial to improve the safety of pipeline arrangement through the protection of the external rotating block and the rotating frame, and reduce the collision damage to the pipeline caused by the transportation and movement of equipment in the mine.

[0029] 3. In the present invention, through the designed mixing mechanism, when the spray medium mixed by the mixing mechanism is sent into the nozzle through the liquid cavity of the spray rack, the medium entering the nozzle can first contact with the overflow grooves on both sides, and the overflow grooves can guide the medium to flow out of the grooves, and the outflowing medium can be sprayed toward the nozzle opening side at an angle relative to the spiral offset, which is beneficial to enhancing the coverage range of the spirally sprayed atomized medium while improving the dust reduction effect of the mist particles, and through the superposition of multiple spiral atomized media, the gaps generated on the dust reduction surface are reduced. When the medium passes through the overflow groove, the medium can be partially atomized when it contacts the guide piece by spraying, and the guide piece can squeeze the spring piece when it contacts the spring piece. When the medium flow is sent into the nozzle in a pulsed staged manner, the pulsed flow medium can cause the guide piece to vibrate, and the medium is fully atomized by the frequency-vibrating guide piece to improve the uniformity of the mist particles and the dust reduction mass transfer effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of a modular dust removal spray device for coal dust prevention and control proposed by the present invention;

[0031] Figure 2 This is a schematic diagram of the structure from an upward angle of a modular dust removal spray device for preventing and controlling coal dust for use in mining proposed by the present invention;

[0032] Figure 3 This is a schematic diagram of the disassembled structure of a modular dust removal spray device for preventing and controlling coal dust proposed by the present invention;

[0033] Figure 4 This is a schematic diagram of the disassembled structure of a spray adjustment mechanism of a modular dust removal spray device for preventing and controlling coal dust proposed by the present invention;

[0034] Figure 5 This is a schematic diagram of the overall structure of a liquid spray adjustment mechanism of a modular dust removal spray device for preventing and controlling coal dust proposed by the present invention;

[0035] Figure 6 This is a schematic diagram of the lateral split structure of the liquid spray adjustment mechanism of a modular dust removal spray device for preventing and controlling coal dust proposed by the present invention;

[0036] Figure 7 This is a schematic diagram of a transverse half-section structure of a modular dust removal spray device for preventing and controlling coal dust for use in mining proposed by the present invention;

[0037] Figure 8 This is a schematic diagram of the split structure of a mixing mechanism of a modular dust removal spray device for preventing and controlling coal dust proposed by the present invention;

[0038] Fig. 9 A schematic diagram of the lateral structure of a liquid spray adjustment mechanism of a modular dust removal spray device for preventing and controlling coal dust proposed by the present invention;

[0039] Fig.10 This is a schematic diagram of the extended mechanism structure of a modular dust removal spray device for coal dust prevention and control proposed by the present invention;

[0040] Fig.11 A schematic diagram of the lateral structure of an insertion rod of a modular dust removal spray device for preventing and controlling coal dust proposed by the present invention;

[0041] Fig.12 This is a schematic diagram of the disassembled structure of the expansion mechanism of a modular dust removal spray device for preventing and controlling coal dust proposed by the present invention.

[0042] Legend:

[0043] 1. Protective bracket; 2. Spray rack; 3. Extension mechanism; 301. Fixed plate; 302. Rotating block; 303. Rotating rack; 304. Insertion rod; 305. Insertion block; 306. Telescopic rod; 307. First spring; 308. Fixed block; 309. First insertion hole; 310. First limiting groove; 311. Second limiting groove; 312. Limiting ring; 4. Extension rack; 5. Spray adjustment mechanism; 501. Fixed ring; 502. Adjustment ring; 503. First ball bearing seat; 504. First adjustment ball; 505. Adjustment rod ; 506, second steering ball; 507, second ball bearing seat; 508, ferrule; 509, limit hoop; 510, clamping ball; 511, fixing rod; 512, closing ring; 513, filling plate; 514, bellows; 515, liquid inlet pipe; 516, closing seat; 6, mixing flow mechanism; 601, mixing flow seat; 602, overflow groove; 603, guide plate; 604, mounting seat; 605, spring piece; 606, slow flow part; 7, mixing liquid mechanism; 701, liquid pump; 702, filter chamber; 703, connecting pipe; 8, nozzle. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0045] See also Figure 1-Figure 12 The present invention provides a technical solution: a modular dust removal spray device for preventing and controlling coal dust in a mine, comprising a plurality of spray racks 2, the plurality of spray racks 2 are connected to each other through an expansion mechanism 3, the plurality of spray racks 2 are adjusted in installation direction through the expansion mechanism 3 to switch the spray angle, a plurality of liquid spray adjustment mechanisms 5 are arranged in an array along the width direction at the bottom of the spray rack 2, a nozzle 8 is installed in the liquid spray adjustment mechanism 5, the nozzle 8 is connected to the liquid cavity in the spray rack 2, and the installation angle of the nozzle 8 on the bottom side of the spray rack 2 is adjusted through the liquid spray adjustment mechanism 5 to switch the liquid spray angle;

[0046] The expansion mechanism 3 on both sides is installed with a protection bracket 1 through the expansion frame 4 and another expansion mechanism 3, and a liquid mixing mechanism 7 is installed in the protection bracket 1. The liquid mixing mechanism 7 is connected to the external water supply equipment and pumps the water 701 into the nozzle 8;

[0047] The liquid spray adjustment mechanism 5 includes a fixed ring 501 and an adjusting ring 502. The fixed ring 501 is connected to the liquid outlet at the bottom of the spray rack 2. A plurality of direction adjustment rods 505 are arranged around the adjusting ring 502. The direction adjustment rods 505 are adjustably installed at corresponding positions on one side of the fixed ring 501. The inner cavity of the adjusting ring 502 is connected to the outside of the nozzle 8. One end of the nozzle 8 is connected to an opening on one side of the fixed ring 501 through a bellows 514. A liquid inlet pipe 515 is connected to the rear side of the fixed ring 501. The other end of the liquid inlet pipe 515 extends into the liquid cavity of the spray rack 2. The installation position of the nozzle 8 is adjusted by the direction adjustment rods 505 around the adjusting ring 502.

[0048] The first ball bearing seat 503 is connected to the four sides of one side of the adjusting ring 502, and the first adjustment ball 504 is rotatably connected inside the first ball bearing seat 503. One side of the first adjustment ball 504 is connected to one end of the adjustment rod 505, and the other end of the adjustment rod 505 is connected to the second adjustment ball 506. The second adjustment ball 506 is rotatably connected to the second ball bearing seat 507 outside. The second ball bearing seat 507 is connected to one end of the fixing rod 511, and the other end of the fixing rod 511 is connected to a clamping ball 510. A plurality of clamping sleeves 508 are connected to the position of the fixing rod 511 on the side of the fixing ring 501 away from the adjusting ring 502, and the clamping ball 510 is inserted and clamped in the clamping sleeve 508.

[0049] The inner cavity of the clamping sleeve 508 is connected with a plurality of limiting hoops 509 at equal intervals along the axis, and the limiting position of the direction-adjusting rod 505 is adjusted by the clamping of the clamping ball 510 in the limiting hoops 509 at corresponding positions.

[0050] Specifically: through the designed liquid spray adjustment mechanism 5, when the adjustment ring 502 is inserted into the corresponding position of the clamping sleeve 508 through the fixing rod 511 at the end of the plurality of direction adjustment rods 505 on the peripheral side and the clamping ball 510, it can be inserted into the closed seat 516 on one side of the liquid inlet pipe 515 through the closed ring 512 at the end of the bellows 514, which is conducive to the rapid connection with the liquid cavity of the spray rack 2 through the expandable and detachable nozzle 8, convenient for disassembly and maintenance, and conducive to cleaning and adjusting the blocked inner cavity of the spray rack 2;

[0051] When installing the nozzle 8, the installer can manually or through the installation equipment pull the adjustment rod 505 and the second adjustment ball 506 at the end to drive the other side fixed rod 511 and the card ball 510 to be embedded in the card sleeve 508. At this time, after pushing the card ball 510 to slide in the axis of the card sleeve 508, the card ball 510 can be nested in different limit hoops 509 to adjust the card depth. At the same time, the rear side adjustment rod 505 and the first adjustment ball 504 can be pulled to pull the rear end adjustment ring 502. The adjustment ring 502 is forced to move and its radial side relative to the fixed The relative spacing of the fixed ring 501 is conducive to adjusting the offset angle of the adjustment ring compared to the fixed ring 501 through the multiple clamping balls 510 on the peripheral side and the fixed rod 511, and is conducive to controlling the spray direction by adjusting the offset angle of the adjustment ring 502, and is convenient for adjusting the spray angle of the multiple nozzles 8 at the bottom of the spray rack 2 to achieve full coverage of the bottom space of the spray rack 2, and can quickly adjust the spray direction by adjusting the clamping balls 510 to slide in the limiting hoop 509, which is convenient for subsequent inspection and maintenance, without the need to set up additional control equipment, and reducing the complexity of the layout;

[0052] Furthermore, a plurality of collapse grooves are provided on the surface of the limiting hoop 509, so that the collapse grooves can be expanded to separate the clamping sleeve 508 of the limiting hoop 509 when the clamping ball 510 moves, thereby facilitating the convenience of adjusting the position of the front side adjustment ring 502.

[0053] Furthermore, by designing the first adjustment ball 504 and the second adjustment ball 506, when the adjustment ring 502 rotates relative to the fixed ring 501, the first ball bearing seat 503 on one side of the adjustment ring 502 can rotate outside the first adjustment ball 504, which is beneficial for adapting to the rotational offset force of the adjustment ring 502 through the rotation of the first ball bearing seat 503, and is beneficial for improving the support adaptability of the nozzle 8 after the angle is adjusted.

[0054] Furthermore, a closed ring 512 is connected to the end of the bellows 514, and a plurality of filling plates 513 are equidistantly connected to one side of the closed ring 512 along the axis, and a closed seat 516 is connected to one side of the liquid inlet pipe 515. The filling plate 513 and the closed ring 512 are closed and connected in the closed seat 516. The designed bellows 514 can adapt to the adjustment of the installation angle of the spray group, and the bellows 514 can be embedded in the closed seat 516 through the rear closed ring 512. The closed seat 516 has an elastic hoop for limiting the position, and the elastic hoop can be nested in the outer peripheral side groove of the closed ring 512 to press the closed ring 512 inward to achieve a closed connection, and the closed effect after nesting is maintained by the nesting of the closed seat 516 and the closed ring 512.

[0055] See also Figure 4 and Figure 8The inner cavity of the nozzle 8 is provided with a mixing mechanism 6, the mixing mechanism 6 includes a mixing seat 601, the mixing seat 601 is provided on one side of the inner cavity of the nozzle 8, and an overflow groove 602 is symmetrically provided on one side of the mixing seat 601, and the medium entering the nozzle 8 is ejected in a spiral shape through the symmetrical overflow groove 602;

[0056] A guide piece 603 is rotatably connected to the inner cavity side wall of the overflow groove 602, and the guide piece 603 covers one side of the overflow groove 602 at a spiral angle. The medium in the frequency-vibrating atomizing nozzle 8 passes through the guide piece 603. A spring piece 605 is attached to one side of the guide piece 603, and a mounting seat 604 is connected to the end of the spring piece 605. The mounting seat 604 is installed on the side of the mixing flow seat 601 away from the spray rack 2. An arc-shaped slow flow portion 606 is opened on one side of the overflow groove 602.

[0057] Specifically: through the designed mixing mechanism 6, when the spray medium mixed by the mixing mechanism 7 is sent into the nozzle 8 through the liquid cavity of the spray rack 2, the medium entering the nozzle 8 can first contact the overflow grooves on both sides, and the overflow grooves can guide the medium to flow out of the grooves, and the outflowing medium can be sprayed toward the opening side of the nozzle 8 at an angle relative to the spiral offset, which is conducive to enhancing the coverage range of the spirally sprayed atomized medium while improving the dust reduction effect of the mist particles, and through the superposition of multiple spiral atomized media, the gap generated on the dust reduction surface is reduced;

[0058] And through the designed spring piece 605 and guide piece 603, when the medium passes through the overflow groove, the medium can be partially atomized when it contacts the guide piece 603 by spraying, and the guide piece 603 can squeeze the spring piece 605 when it contacts the spring piece 605. When the medium flow is sent into the nozzle 8 in a pulsed stage, the guide piece 603 can generate frequency vibration through the pulsed flow medium, and the medium can be fully atomized by the frequency-vibrating guide piece 603 to improve the uniformity of the mist particles and the dust reduction mass transfer effect;

[0059] In another embodiment, a vibration component, such as a vibration motor with a polarization block, may be installed inside the spring 605, and the guide piece 603 may increase the frequency vibration effect to improve the mist particle refinement effect;

[0060] At the same time, the arc-shaped slow-flow portion 606 is designed to reduce the cutting angle of the overflow groove 602 relative to the medium, thereby reducing the dissipation of kinetic energy.

[0061] See also Figure 10-12The expansion mechanism 3 includes a rotating block 302 and a rotating frame 303. The rotating frame 303 has a U-shaped cross-section. The rotating block 302 is rotatably connected to the inner cavity of the rotating frame 303. A fixed disk 301 is connected to one side of the rotating block 302. The side away from the fixed disk 301 and the rotating frame 303 is connected to the corresponding position of the expansion frame 4 or the corresponding position of the end of the spray frame 2. A limiting ring 312 is embedded on the top of the rotating block 302. A plurality of second limiting grooves 311 are equidistantly opened in the inner cavity of the limiting ring 312 along the axis. The rotating frame 303 A first insertion hole 309 is provided at a position corresponding to the limiting ring 312, and a plurality of first limiting grooves 310 are provided in the inner cavity of the first insertion hole 309 at equal intervals along the axis. An insertion rod 304 is inserted and connected between the first insertion hole 309 and the inner cavity of the limiting ring 312, and a plurality of insertion blocks 305 are connected to the outer circumference of the insertion rod 304. The insertion blocks 305 are inserted between the second limiting groove 311 and the first limiting groove 310, and the relative rotation of the insertion limiting rotating block 302 and the rotating frame 303 is achieved through the insertion of the insertion rod 304;

[0062] The bottom end of the insertion rod 304 is connected to a telescopic rod 306, and the other end of the telescopic rod 306 is connected to a fixed block 308. The fixed block 308 is connected to a chamber opened at the top of the rotating block 302. A first spring 307 is sleeved on the outside of the telescopic rod 306. Both ends of the first spring 307 are respectively connected to the corresponding positions of the fixed block 308 and the end of the insertion rod 304. A pipe hole for the extension of the pipeline is opened through one side of the rotating block 302 and the fixed disk 301.

[0063] The liquid mixing mechanism 7 includes a liquid pump 701, which is installed at the bottom of the inner cavity of the protective bracket 1. The liquid outlet at the top of the liquid pump 701 is connected to the filter chamber 702. The top of the filter chamber 702 passes through a connecting pipe 703 and passes through multiple rotating blocks 302 and a pipe hole on one side of the rotating frame 303 in sequence to extend into the spray rack 2.

[0064] Specifically: through the designed expansion mechanism 3, when the peripheral insertion block 305 is separated from the limiting ring 312 by pulling the insertion rod 304, the relative rotation position can be adjusted by rotating the rotating block 302 or the rotating frame 303, which is beneficial to regulating the relative angle of the spray rack 2 or the expansion frame 4 connected on both sides, so that the assembly arc can be adjusted by the rotating block 302 and the rotating frame 303 that can be relatively rotated and limited, which is beneficial to fully fit through the adaptation of the arc angle, and is beneficial to adjust the installation angle when the working surface area changes. Through the setting of the expansion mechanism 3, the arrangement and use of the dust removal spray will not be affected by the change of the position of the lane area, and after the insertion block 305 is inserted into the limiting ring 312 and the first limiting groove 310 on the peripheral side of the first insertion hole 309, the relative rotation of the rotating block 302 relative to the rotating frame 303 can be limited to improve the stability after assembly;

[0065] Furthermore, through the designed telescopic rod 306 and the first spring 307, the first spring 307 can use its own tension to maintain the tightness of the connection between the insertion rod 304 and the inner side of the rotating block 302, thereby preventing the insertion rod 304 from being separated from the rotating block 302 and the rotating frame 303 due to the impact of excavation, which is conducive to improving the stability after assembly;

[0066] At the same time, through the designed rotating block 302 and the pipe holes opened on one side of the rotating frame 303, the medium pumping pipeline can be led out from the bottom mixing mechanism 7 and then pass through the corresponding control in sequence to extend into the spray rack 2, which is beneficial to improve the safety of pipeline arrangement through the protection of the external rotating block 302 and the rotating frame 303, and reduce the collision damage to the pipeline caused by the transportation and movement of equipment in the mine. In addition, through the designed mixing mechanism 7, the liquid pump 701 can extract water or other dust reduction media in the external medium cavity and send it into the filter cavity 702. The filter cavity 702 can filter the impurities in the sprayed water and then send it into the top connecting pipe 703 and then into the spray rack 2 in sequence, thereby reducing the probability of pipeline blockage and facilitating continuous use and maintenance.

[0067] In the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A modular dust removal spray device for preventing and controlling coal dust in a mine, comprising a plurality of spray racks (2), characterized in that: The plurality of spray racks (2) are connected to each other via an expansion mechanism (3); the plurality of spray racks (2) are installed in an orientation to switch spray angles via the expansion mechanism (3); a plurality of liquid spray adjustment mechanisms (5) are arranged in an array along a width direction at the bottom of the spray rack (2); a nozzle (8) is installed in the liquid spray adjustment mechanism (5); the nozzle (8) is connected to a liquid cavity in the spray rack (2); and the installation angle of the nozzle (8) at the bottom of the spray rack (2) is adjusted via the liquid spray adjustment mechanism (5) to switch the liquid spray angle; The expansion mechanisms (3) located on both sides are installed with a protective bracket (1) through an expansion frame (4) and another expansion mechanism (3), and a liquid mixing mechanism (7) is installed in the protective bracket (1). The liquid mixing mechanism (7) is connected to an external water supply device and delivers water to the nozzle (8) through a water pump (701).

2. A modular dust removal spray device for coal dust prevention and control in mines according to claim 1, characterized in that: The liquid spray adjustment mechanism (5) comprises a fixed ring (501) and an adjustment ring (502); the fixed ring (501) is connected to the liquid outlet at the bottom of the spray rack (2); a plurality of adjustment rods (505) are arranged around the adjustment ring (502); the adjustment rods (505) are adjustably installed at corresponding positions on one side of the fixed ring (501); the inner cavity of the adjustment ring (502) is connected to the outside of the nozzle (8); one end of the nozzle (8) is connected to an opening on one side of the fixed ring (501) through a bellows (514); a liquid inlet pipe (515) is connected to the rear side of the fixed ring (501); the other end of the liquid inlet pipe (515) extends into the liquid cavity of the spray rack (2); and the installation position of the nozzle (8) is adjusted by the adjustment rods (505) around the adjustment ring (502).

3. A modular dust removal spray device for coal dust prevention and control in mines according to claim 2, characterized in that: The first ball bearing seat (503) is connected to the four sides of one side of the adjusting ring (502); a first adjustment ball (504) is rotatably connected inside the first ball bearing seat (503); one side of the first adjustment ball (504) is connected to one end of an adjustment rod (505); the other end of the adjustment rod (505) is connected to a second adjustment ball (506); the second adjustment ball (506) is rotatably connected to a second ball bearing seat (507) outside; one end of the second ball bearing seat (507) is connected to a fixing rod (511); the other end of the fixing rod (511) is connected to a clamping ball (510); a side of the fixing ring (501) away from the adjusting ring (502) is connected to a plurality of clamping sleeves (508) at a position corresponding to the fixing rod (511); the clamping ball (510) is inserted and clamped in the clamping sleeve (508).

4. A modular dust removal spray device for coal dust prevention and control in mines according to claim 3, characterized in that: The inner cavity of the clamping sleeve (508) is connected with a plurality of limiting hoops (509) at equal intervals along the axis, and the limiting position of the direction adjustment rod (505) is adjusted by clamping the clamping ball (510) in the limiting hoops (509) at corresponding positions.

5. A modular dust removal spray device for coal dust prevention and control in mines according to claim 2, characterized in that: The end of the bellows (514) is connected to a closed ring (512), one side of the closed ring (512) is connected to a plurality of filling plates (513) at equal distances along the axis, one side of the liquid inlet pipe (515) is connected to a closed seat (516), and the filling plates (513) and the closed ring (512) are closed and connected in the closed seat (516).

6. A modular dust removal spray device for coal dust prevention and control in mines according to claim 1, characterized in that: The inner cavity of the nozzle (8) is provided with a flow mixing mechanism (6), the flow mixing mechanism (6) comprising a flow mixing seat (601), the flow mixing seat (601) being provided on one side of the inner cavity of the nozzle (8), and an overflow groove (602) being symmetrically provided on one side of the flow mixing seat (601), and the medium entering the nozzle (8) is ejected in a spiral shape through the symmetrical overflow groove (602).

7. A modular dust removal spray device for coal dust prevention and control in mines according to claim 6, characterized in that: A guide piece (603) is rotatably connected to the inner cavity side wall of the overflow groove (602), and the guide piece (603) covers one side of the overflow groove (602) at a spiral angle. The medium in the frequency-vibration atomizing nozzle (8) passes through the guide piece (603). A spring piece (605) is attached to one side of the guide piece (603), and a mounting seat (604) is connected to the end of the spring piece (605). The mounting seat (604) is installed on the side of the mixing seat (601) away from the spray rack (2). An arc-shaped slow-flow portion (606) is opened on one side of the overflow groove (602).

8. A modular dust removal spray device for coal dust prevention and control in mining according to claim 1, characterized in that: The expansion mechanism (3) comprises a rotating block (302) and a rotating frame (303); the rotating frame (303) has a U-shaped cross-section; the rotating block (302) is rotatably connected to the inner cavity of the rotating frame (303); one side of the rotating block (302) is connected to a fixed disk (301); the side away from the fixed disk (301) and the rotating frame (303) is connected to a corresponding position of an expansion frame (4) or a corresponding position of an end of a spray frame (2); a limiting ring (312) is embedded in the top of the rotating block (302); a plurality of second limiting grooves (311) are equidistantly provided in the inner cavity of the limiting ring (312) along the axis; and the rotating frame (303) A first insertion hole (309) is provided at a position corresponding to the limiting ring (312), and a plurality of first limiting grooves (310) are provided in the inner cavity of the first insertion hole (309) at equal intervals around the axis. An insertion rod (304) is inserted and connected between the first insertion hole (309) and the inner cavity of the limiting ring (312), and a plurality of insertion blocks (305) are connected to the outer peripheral side of the insertion rod (304), and the insertion block (305) is inserted between the second limiting groove (311) and the first limiting groove (310), and the relative rotation of the insertion limiting rotating block (302) and the rotating frame (303) is achieved through the insertion of the insertion rod (304).

9. A modular dust removal spray device for coal dust prevention and control in mining according to claim 8, characterized in that: The bottom end of the insertion rod (304) is connected to a telescopic rod (306), and the other end of the telescopic rod (306) is connected to a fixed block (308). The fixed block (308) is connected to a chamber opened at the top of the rotating block (302). A first spring (307) is sleeved on the outside of the telescopic rod (306). The two ends of the first spring (307) are respectively connected to corresponding positions of the fixed block (308) and one side of the end of the insertion rod (304). A pipe hole for extending the pipeline is opened through one side of the rotating block (302) and the fixed plate (301).

10. A modular dust removal spray device for coal dust prevention and control in mining according to claim 1, characterized in that: The liquid mixing mechanism (7) comprises a liquid pump (701), the liquid pump (701) being installed at the bottom of the inner cavity of the protective bracket (1), the liquid outlet at the top of the liquid pump (701) being connected to a filter cavity (702), and the top of the filter cavity (702) being extended into the spray rack (2) by passing through a connecting pipe (703) through a plurality of rotating blocks (302) and a tube hole on one side of the rotating rack (303) in sequence.

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