A mine excavator spray dust falling device

Abstract

The application discloses a mining excavator spraying dust-settling device, belonging to the dust-settling technical field of the mining excavator, which comprises a mining excavator body, an installation frame is arranged on the mining excavator body, a mining head is rotatably arranged at one end of the installation frame, a front spraying assembly is arranged on the outer side of the one end of the installation frame close to the mining head, the front spraying assembly is movably connected with the mining head, and the front spraying assembly is used for spraying dust in the advancing direction of the mining excavator body; a water guide assembly is arranged on the mining excavator body and is connected with the front spraying assembly, the water guide assembly comprises symmetrical water guide pipes movably arranged on the two sides of the mining excavator body, a plurality of side spraying assemblies are equidistantly arranged on the water guide pipes, the side spraying assemblies are used for spraying dust on the lateral sides of the mining excavator body, an automatic adjusting assembly is arranged on the mining excavator body and is connected with the water guide pipes, and the automatic adjusting assembly expands the dust-settling range on the lateral sides of the mining excavator body by driving the side spraying assemblies to reciprocatingly swing.

Description

Technical Field

[0001] This invention relates to the field of dust suppression technology for mining machines, specifically to a spray dust suppression device for mining machines. Background Technology

[0002] Excavators are heavy machines used in mines, tunnels, and engineering projects to directly excavate rocks, coal, and soil. Their core function is to extract ore, coal, and soil from underground or mountains. During the excavation process, a large amount of dust is generated, requiring nozzles to be installed on the excavator to spray and suppress the dust.

[0003] When existing dust suppression spray devices for mining excavators are in use, the nozzles can only spray dust of the same intensity in different areas. This results in key dust areas not being effectively sprayed, while dust in the outer areas is sprayed excessively. The inability to differentiate between dust in different areas reduces the effectiveness of dust suppression spray.

[0004] Therefore, there is a need to provide a dust suppression spray device for mining excavators, which aims to solve the above problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a dust suppression spray device for mining excavators to solve the problems mentioned in the background.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A dust suppression spray device for a mining excavator includes an excavator body, a mounting frame on the excavator body, and a mining head rotatably mounted on one end of the mounting frame. The device also includes: A front spray assembly is located on the outer side of the mounting frame near the mining head. The front spray assembly is movably connected to the mining head and is used to spray dust in the forward direction of the mining machine. A water guiding component is installed on the mining machine body and connected to the front spray component. The water guiding component includes water guiding pipes that are symmetrically and movably distributed on both sides of the mining machine body. A three-way pipe b connected to the front spray component is provided above the end of the mining machine body near the mining head. The side spray assembly is provided with several units that are equally spaced on the water guide pipe. The side spray assembly is used to spray dust on the side of the mining machine body. An automatic adjustment component is installed on the mining machine body and connected to the water pipe. The automatic adjustment component expands the dust suppression range on the side of the mining machine body by driving the side spray component to swing back and forth. The front spray assembly includes a water storage ring cylinder installed on the mounting frame near the mining head. One side of the water storage ring cylinder is connected to a three-way pipe b. Several diversion pipes a are distributed circumferentially on the other side of the water storage ring cylinder. One end of the diversion pipe a is rotatably engaged with the water storage ring cylinder. The end of the diversion pipe a away from the water storage ring cylinder is connected to an atomizing nozzle a. A movable module is provided between the water storage ring cylinder and the mining head. The diversion pipe a is a bend, and the end of the diversion pipe a away from the water storage ring is bent outward.

[0007] As a further embodiment of the present invention, the water guiding assembly further includes a water tank disposed at the end of the mining machine body away from the mining head. The water tank is used to store spray water. A high-pressure water pump is installed on the top of the water tank. The input end of the high-pressure water pump is connected to the spray water inside the water tank through a water inlet pipe. The output end of the high-pressure water pump is connected to a three-way pipe a. The end of the three-way pipe a away from the high-pressure water pump is rotatably connected to the inlet end of the corresponding water guiding pipe. The end of the three-way pipe b near the three-way pipe a is rotatably connected to the outlet end of the corresponding water guiding pipe.

[0008] As a further embodiment of the present invention, the active module includes a cam mounted on the mining head and several transmission pulleys a mounted on the diversion pipe a. The several transmission pulleys a are connected to each other by a transmission belt a. A transmission gear ring is installed on the outer wall of a diversion pipe a located above the mining head. A guide bracket is provided at the top of the water storage ring cylinder. A lifting rack is slidably mounted inside the guide bracket and is movably sleeved on the outside of the corresponding diversion pipe a. The lifting rack meshes with the transmission gear ring. A counterweight abutment plate is provided at the bottom of the lifting rack to abut against the cam.

[0009] As a further embodiment of the present invention, the side spray assembly includes several diversion pipes b equidistantly distributed on the water guide pipe. One end of each diversion pipe b is connected to the interior of the water guide pipe, and the other end of each diversion pipe b is connected to an atomizing nozzle b. An ejector pipe is connected to the upper part of the diversion pipe b near the atomizing nozzle b. An installation frame is installed above the ejector pipe. The bottom of the installation frame has a through hole connected to the ejector pipe. The installation frame has two partitions located at both ends of the through hole. The two partitions divide the internal space of the installation frame into a dust collection chamber, an air intake chamber, and a dust collection chamber. A filter screen is provided between the installation frame and the two partitions. A side groove is provided on the side wall of the installation frame. A counterweight slide plate that slides and engages with the side groove is movably installed inside the installation frame. A scraper plate that movably contacts the upper surface of the partition plate is provided at the bottom of the counterweight slide plate.

[0010] As a further embodiment of the present invention, the automatic adjustment component includes several fixed supports symmetrically arranged on the top of the mining machine body, each fixed support corresponding to both ends of the water guide pipe. A fixed arc plate is provided on the side wall of each fixed support. A U-shaped support plate is installed on the top of each fixed support near the water guide pipe. A spiral groove is spirally arranged on the outer wall of the U-shaped support plate. A sliding column a is slidably arranged within the spiral groove. A movable frame is connected to the end of the sliding column a away from the spiral groove. A connecting frame is installed at the bottom of the water guide pipe. Movable arc plates that rotatably cooperate with the fixed arc plates are provided at both ends of the connecting frame. A support groove is provided on the connecting frame. A support slide plate connected to the movable frame is slidably arranged within the support groove. A power module is provided between the water guide pipe and the movable frame.

[0011] As a further embodiment of the present invention, the power module includes a protruding frame disposed on the upper part of the water guide pipe and connected to the interior of the water guide pipe. A rotating paddle that is in active contact with the spray water is rotatably disposed between the water guide pipe and the protruding frame. One end of the rotating paddle passes through the protruding frame and is connected to the transmission pulley c. A transmission pulley b is rotatably disposed on the connecting frame. The transmission pulley b and the transmission pulley c are connected by a transmission belt b. A sliding column b is disposed on the side wall of the transmission pulley b. A movable groove plate that slides with the sliding column b is connected to the end of the movable frame near the transmission pulley b.

[0012] As a further embodiment of the present invention, the top of the fixed bracket is provided with a Y-shaped part, and the top two ends of the Y-shaped part are respectively provided with U-shaped parts for supporting the tee pipe a, the water guide pipe or the tee pipe b.

[0013] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art: 1. In this invention, by periodically adjusting the spraying direction of several atomizing nozzles a, dust in the tunneling direction can be treated by zoned spraying. That is, the key dust areas in the tunneling direction are treated by concentrated spraying, while the dust in the outer areas of the tunneling direction is treated by zoned spraying. This facilitates precise and flexible spraying treatment of dust in the tunneling direction and improves the dust suppression effect. 2. In this invention, several side spray components are distributed at equal intervals on the water pipes on both sides to spray the dust in the side space of the mining machine. At the same time, the dust-laden airflow in the side space of the mining machine can be drawn into the fog field instead of waiting for the dust to drift over and then touch it. This can actively capture the dust in the side space of the mining machine and form a local purification air curtain to protect the driver's area, thus significantly improving the dust capture efficiency. 3. In this invention, by using the flow of spray water, the water guide pipe can be driven to swing back and forth around its axis. The water guide pipe is connected to the side spray assembly to adjust the spray direction and range of the atomizing nozzle b, as well as the range of active dust collection, thereby disturbing the flow of dust-laden air in the mine, improving the contact efficiency between dust and water mist, effectively improving the efficiency of spray dust suppression, and achieving multi-directional high-efficiency dust suppression. 4. In this invention, when the counterweight slide plate is located at the upper end of the mounting frame, the counterweight slide plate will slide along the side groove towards the lower end of the mounting frame under its own weight. The counterweight slide plate drives the scraper to move synchronously. The scraper can push the dust accumulated on the filter screen into the corresponding dust collection chamber by making active contact with the surface of the filter screen, thus avoiding dust accumulation and clogging of the air holes of the filter screen. At the same time, it can realize the automatic collection of dust on the filter screen, avoiding the low efficiency of manual operation.

[0014] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention.

[0016] Figure 2 This is a schematic diagram of the water guiding component in this invention.

[0017] Figure 3 This is a schematic diagram of the front spray assembly in this invention.

[0018] Figure 4 In this invention Figure 3 A magnified view of part A.

[0019] Figure 5 This is a schematic diagram of the side spray assembly and the automatic adjustment assembly in this invention.

[0020] Figure 6 In this invention Figure 5 Enlarged view of section B in the middle.

[0021] Figure 7 This is a cross-sectional view of the mounting frame in this invention.

[0022] Figure 8 In this invention Figure 5 Enlarged view of a section at point C.

[0023] Figure 9 This is a cross-sectional view of the water guide pipe and the protruding frame in this invention.

[0024] Figure 10 This is a schematic diagram of the fixed bracket in this invention.

[0025] Reference numerals: 1. Mining machine body; 2. Mounting frame; 3. Mining head; 4. Water guiding assembly; 401. Water tank; 402. High-pressure water pump; 403. Water inlet pipe; 404. T-pipe a; 405. Water guiding pipe; 406. T-pipe b; 5. Front spray assembly; 501. Water storage ring cylinder; 502. Diverter pipe a; 503. Atomizing nozzle a; 504. Drive pulley a; 505. Drive belt a; 506. Cam; 507. Counterweight abutment plate; 508. Guide bracket; 509. Lifting rack; 510. Drive gear ring; 6. Side spray assembly; 601. Diverter pipe b; 602. Atomizing nozzle b; 603. Injector tube; 604. Mounting frame; 605. Through hole; 606. Partition plate; 607. Filter screen; 608. Side groove; 609. Counterweight slide plate; 610. Scraper; 7. Automatic adjustment component; 701. Fixed bracket; 7011. Y-shaped part; 7012. U-shaped part; 702. Fixed arc plate; 703. U-shaped support plate; 704. Spiral slide; 705. Slide column a; 706. Movable frame; 707. Connecting frame; 708. Movable arc plate; 709. Support slide; 710. Support slide plate; 711. Movable slot plate; 712. Slide column b; 713. Transmission pulley b; 714. Transmission belt b; 715. Transmission pulley c; 716. Protruding frame; 717. Rotating paddle. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0028] In one embodiment of the present invention, see Figures 1-2A dust suppression spray device for a mining excavator includes an excavator body 1, a mounting frame 2 on the excavator body 1, a mining head 3 rotatably mounted at one end of the mounting frame 2, a front spray component 5 on the outer side of the end of the mounting frame 2 near the mining head 3, the front spray component 5 being movably connected to the mining head 3, the front spray component 5 being used to spray dust in the forward direction of the excavator body 1, a water guiding component 4 connected to the front spray component 5 on the excavator body 1, the water guiding component 4 including water guiding pipes 405 symmetrically and movably distributed on both sides of the excavator body 1, a plurality of side spray components 6 evenly distributed on the water guiding pipes 405, the side spray components 6 being used to spray dust in the side direction of the excavator body 1, an automatic adjustment component 7 connected to the water guiding pipes 405 on the excavator body 1, the automatic adjustment component 7 expanding the dust suppression range in the side direction of the excavator body 1 by driving the side spray components 6 to swing back and forth.

[0029] In this embodiment, the mining machine 1 moves the mounting frame 2 and the mining head 3 within the mine. The mounting frame 2 rotates the mining head 3 to perform mining operations within the mine. During the mining process, a large amount of dust is generated. The water guiding component 4 guides the spray water to the front spray component 5. The front spray component 5 sprays the dust generated during the mining process by spraying the outer ring of the mining head 3. At the same time, the mining head 3 can reciprocate to adjust the spray range of the front spray component 5 by connecting it to the front spray component 5, which can effectively expand the dust suppression range in front of the mining machine 1 and improve dust suppression efficiency. By using several side spray components 6 that are equidistantly distributed on the water pipes 405 on both sides, dust in the side space of the mining machine body 1 can be sprayed. At the same time, the dust-laden airflow in the side space of the mining machine body 1 can be drawn into the fog field instead of waiting for the dust to drift over and then touch it. This achieves active adsorption and collection of dust in the side space of the mining machine body 1. In addition, it can form a local purification air curtain to protect the driver's area and significantly improve dust collection efficiency.

[0030] The automatic adjustment component 7 drives the water guide pipe 405 to swing back and forth along its axis in coordination with the spray water flowing through the water guide pipe 405. The water guide pipe 405 drives several side spray components 6 to swing back and forth synchronously to adjust the real-time side spray range, which can effectively improve the dust collection efficiency and realize multi-directional high-efficiency spray dust suppression treatment of the mining machine body 1.

[0031] In one embodiment of the present invention, see Figure 1 and Figure 2The water guiding component 4 also includes a water tank 401 located at the end of the mining machine body 1 away from the mining head 3. The water tank 401 is used to store spray water. A high-pressure water pump 402 is installed on the top of the water tank 401. The input end of the high-pressure water pump 402 is connected to the spray water inside the water tank 401 through a water inlet pipe 403. The output end of the high-pressure water pump 402 is connected to a three-way pipe a404. The end of the three-way pipe a404 away from the high-pressure water pump 402 is rotatably connected to the inlet end of the corresponding water guiding pipe 405. A three-way pipe b406 is provided above the end of the mining machine body 1 near the mining head 3 and is connected to the front spray component 5. The end of the three-way pipe b406 near the three-way pipe a404 is rotatably connected to the outlet end of the corresponding water guiding pipe 405.

[0032] In this embodiment, the high-pressure water pump 402 draws out the spray water from the water tank 401 through the water inlet pipe 403, and introduces the drawn spray water into two water guide pipes 405 through the three-way pipe a 404. The spray water in the two water guide pipes 405 is collected at the front spray assembly 5 through the three-way pipe b 406. The front spray assembly 5 sprays the collected spray water out towards the outer ring of the mining head 3, which can spray the dust in the forward direction of the mining machine body 1 to achieve effective dust suppression.

[0033] In one embodiment of the present invention, see Figures 1-4 The front spray assembly 5 includes a water storage ring cylinder 501 installed on the mounting frame 2 near one end of the mining head 3. One side of the water storage ring cylinder 501 is connected to a three-way pipe b406. Several diversion pipes a502 are distributed circumferentially on the other side of the water storage ring cylinder 501. One end of the diversion pipe a502 is rotatably engaged with the water storage ring cylinder 501. The end of the diversion pipe a502 away from the water storage ring cylinder 501 is connected to an atomizing nozzle a503. A movable module is provided between the water storage ring cylinder 501 and the mining head 3. The active module includes a cam 506 mounted on the mining head 3 and several transmission pulleys a504 mounted on the diversion pipes a502. The several transmission pulleys a504 are connected by a transmission belt a505. A transmission gear ring 510 is installed on the outer wall of a diversion pipe a502 located above the mining head 3. A guide bracket 508 is provided at the top of the water storage ring cylinder 501. A lifting rack 509 is slidably mounted inside the guide bracket 508 and is movably sleeved on the outside of the corresponding diversion pipe a502. The lifting rack 509 meshes with the transmission gear ring 510. A counterweight abutment plate 507 is provided at the bottom of the lifting rack 509 to abut against the cam 506.

[0034] In this embodiment, in the initial state, the protruding end of the cam 506 is at the lowest point, and the counterweight abutment plate 507 is at the lowest point.

[0035] Furthermore, the high-pressure water pump 402 extracts the spray water from the water tank 401 through the water inlet pipe 403, and introduces the extracted spray water into two water guide pipes 405 through the three-way pipe a404. The spray water in the two water guide pipes 405 is collected at the water storage ring cylinder 501 through the three-way pipe b406. The water storage ring cylinder 501 sprays water onto the outer ring of the mining head 3 through several circumferentially distributed diversion pipes a502 and the diversion pipes a502 and atomizing nozzles a503, thereby effectively spraying and suppressing dust generated during the tunneling process.

[0036] It is worth noting that the diversion pipe a502 is a bent pipe and the end of the diversion pipe a502 away from the water storage ring cylinder 501 is bent outward. In the initial state of the front spray assembly 5, the spray direction of the atomizing nozzle a503 is towards the outer wall of the mining head 3. Through the concentrated spraying of several atomizing nozzles a503, the dust-dense areas generated during the mining head 3 excavation process can be sprayed in a focused manner to improve the dust suppression effect.

[0037] Furthermore, the mounting frame 2 performs tunneling within the mine by rotating the excavator head 3. The excavator head 3 drives the counterweight abutment plate 507 to rotate synchronously. As the protruding end of the cam 506 approaches the counterweight abutment plate 507, the cam 506 pushes the lifting rack 509 upward by moving against the counterweight abutment plate 507 and sliding with the lifting rack 509 and guide bracket 508. The lifting rack 509 drives the diversion pipe a502 synchronously by meshing with the transmission gear ring 510. The rotation is achieved because several drive pulleys a504 are interconnected via the same drive belt a505. Therefore, when one of the diversion pipes a502 rotates, several diversion pipes a502 will rotate synchronously. When several diversion pipes a502 rotate synchronously, the spray direction of the atomizing nozzle a503, which bends outward at the end of the diversion pipe a502, is adjusted, causing the spray direction of the atomizing nozzle a503 to rotate away from the outer wall of the mining head 3. This allows for area spray dust suppression treatment of the outer ring dust in the tunneling direction.

[0038] Furthermore, as the protruding end of the cam 506 moves away from the counterweight abutment plate 507, the lifting rack 509 moves downward under the gravity of the counterweight abutment plate 507. The lifting rack 509 drives the diverter pipe a502 to rotate synchronously by meshing with the transmission gear ring 510. The diverter pipe a502 drives several diverter pipes a502 to rotate synchronously by connecting several transmission pulleys a504 and transmission belts a505. The diverter pipe a502 adjusts the spray direction of the atomizing nozzle a503 by connecting with the atomizing nozzle a503, so that the spray direction of the atomizing nozzle a503 rotates towards the outer wall of the mining head 3, which can carry out key dust suppression spraying in key dust areas in the tunneling direction.

[0039] By periodically adjusting the spray direction of several atomizing nozzles (a503), dust in the tunneling direction can be treated by zoned spraying. Specifically, concentrated spraying can be used to suppress dust in key dust areas along the tunneling direction, while regional spraying can be used to suppress dust in the outer areas of the tunneling direction. This facilitates precise and flexible spraying to suppress dust in the tunneling direction, thus improving the dust suppression effect.

[0040] In one embodiment of the present invention, see Figures 1-2 , Figures 5-7 The side spray assembly 6 includes several diverter pipes b601 evenly distributed on the water guide pipe 405. One end of each diverter pipe b601 is connected to the interior of the water guide pipe 405, and the other end of each diverter pipe b601 is connected to an atomizing nozzle b602. An ejector pipe 603 is connected to the upper part of the diverter pipe b601 near the atomizing nozzle b602. A mounting frame 604 is installed above the ejector pipe 603, and the bottom of the mounting frame 604 has a through hole 605 communicating with the ejector pipe 603. The mounting frame 604 has two partitions 606 located at both ends of the through hole 605. The two partitions 606 divide the internal space of the mounting frame 604 into a dust collection chamber, an air intake chamber, and another dust collection chamber. A filter screen 607 is provided between the mounting frame 604 and the two partitions 606. A side groove 608 is provided on the side wall of the mounting frame 604. A counterweight slide plate 609 is movably installed in the mounting frame 604 and slides in cooperation with the side groove 608. A scraper 610 is provided at the bottom of the counterweight slide plate 609 and movably contacts the upper surface of the partition 606.

[0041] In this embodiment, in the initial state, the counterweight slide plate 609 is slidably engaged with one end of the side groove 608. At this time, the scraper 610 does not contact the filter screen 607.

[0042] Furthermore, the high-pressure water pump 402 draws out the spray water from the water tank 401 through the water inlet pipe 403, and introduces the drawn spray water into the two guide pipes 405 through the three-way pipe a404. The spray water in the guide pipe 405 flows through the diversion pipe b601 and is atomized and sprayed out through the atomizing nozzle b602. Since the diversion pipe b601 and the atomizing nozzle b602 can form a Venturi tube, the spray water has the highest speed and the lowest pressure during the flow process from the diversion pipe b601 to the atomizing nozzle b602, which will create a negative pressure at the ejector pipe 603, drawing the dust-laden air above the mounting frame 604 into the ejector pipe 603, thus realizing the active dust collection of the device.

[0043] Furthermore, during the active dust collection process, the filter screen 607 can filter dust from the outside dusty air and collect it. When the dust content on the filter screen 607 is high, the counterweight slide plate 609 is moved from one end of the side groove 608 to the other end. The counterweight slide plate 609 drives the scraper 610 to move synchronously and the side spray assembly 6 mining machine body 19 and the upper surface of the filter screen 607 to make contact with each other, pushing the dust accumulated on the upper surface of the filter screen 607 into the dust collection chamber inside the mounting frame 604.

[0044] Furthermore, when the device is shut down, the locking connection between the mounting frame 604 and the ejector tube 603 can be released, the dust in the dust collection chamber inside the mounting frame 604 can be cleaned, and a new mounting frame 604 can be reinstalled on the upper end of the ejector tube 603. This avoids the problem of needing to replace the mounting frame 604 during the spray dust suppression process, which would affect the dust suppression efficiency and improve the spray dust suppression effect.

[0045] In one embodiment of the present invention, see Figures 1-2 , Figure 5 , Figures 8-10 The automatic adjustment component 7 includes several fixed supports 701 symmetrically arranged on the top of the mining machine body 1. Each fixed support 701 corresponds to one end of the water guide pipe 405. A fixed arc plate 702 is provided on the side wall of each fixed support 701. A U-shaped support plate 703 is installed on the top of each fixed support 701 near the water guide pipe 405. A spiral groove 704 is spirally arranged on the outer wall of the U-shaped support plate 703, and a sliding column a70 is slidably arranged within the spiral groove 704. 5. The end of the sliding column a705 away from the spiral groove 704 is connected to a movable frame 706. A connecting frame 707 is installed at the bottom of the water guide pipe 405. The two ends of the connecting frame 707 are provided with movable arc plates 708 that rotate with the fixed arc plate 702. A support groove 709 is provided on the connecting frame 707. A support slide plate 710 connected to the movable frame 706 is slidably provided in the support groove 709. A power module is provided between the water guide pipe 405 and the movable frame 706.

[0046] The power module includes a protruding frame 716 disposed on the upper part of the water guide pipe 405 and connected to the interior of the water guide pipe 405. A rotating paddle 717 is rotatably disposed between the water guide pipe 405 and the protruding frame 716 and is in active contact with the spray water. One end of the rotating paddle 717 passes through the protruding frame 716 and is connected to the transmission pulley c715. A transmission pulley b713 is rotatably disposed on the connecting frame 707. The transmission pulley b713 and the transmission pulley c715 are connected by a transmission belt b714. A sliding column b712 is provided on the side wall of the transmission pulley b713. A movable groove plate 711 that slides with the sliding column b712 is connected to one end of the movable frame 706 near the transmission pulley b713.

[0047] In this embodiment, in the initial state, the sliding column a705 slides in the middle of the spiral groove 704, and at this time, the atomizing nozzle b602 sprays in the horizontal direction.

[0048] Furthermore, the high-pressure water pump 402 draws spray water from the water tank 401 through the water inlet pipe 403, and introduces the drawn spray water into two guide pipes 405 through the three-way pipe a404. During the flow of the spray water within the guide pipes 405, it comes into contact with the rotating paddle 717, thereby driving the rotating paddle 717 to rotate. The transmission pulley c715 drives the transmission pulley b713 to rotate through the transmission belt b714. The transmission pulley b713 drives the movable... The movable frame 706 slides back and forth. The movable frame 706 drives the water guide pipe 405 to swing back and forth along its axis by connecting with the sliding column a705 and the sliding cooperation between the sliding column a705 and the spiral slide groove 704. The water guide pipe 405 adjusts the spray direction and range of the atomizing nozzle b602 and the range of active dust collection by connecting with the side spray assembly 6, thereby disturbing the flow of dust-laden air in the mine and improving the contact efficiency between dust and water mist, which can effectively improve the efficiency of spray dust suppression.

[0049] Furthermore, the water guide pipe 405 drives the side spray assembly 6 to reciprocate synchronously. During the reciprocating motion of the side spray assembly 6, the mounting frame 604 also reciprocates synchronously. Since the counterweight slide plate 609 is located at one end of the side groove 608, during the swing of the mounting frame 604, when the counterweight slide plate 609 is at the lower end of the mounting frame 604, the counterweight slide plate 609 will not slide along the side groove 608. At this time, the position of the counterweight slide plate 609 is relatively fixed, that is, the counterweight slide plate 609 swings synchronously with the mounting frame 604; when the counterweight slide plate 609 is at the lower end of the mounting frame 604, the counterweight slide plate 609 will not slide along the side groove 608. At this time, the position of the counterweight slide plate 609 is relatively fixed, that is, the counterweight slide plate 609 swings synchronously with the mounting frame 604. When 609 is located at the upper end of the mounting frame 604, the counterweight slide plate 609 will slide along the side groove 608 towards the lower end of the mounting frame 604 under its own weight. The counterweight slide plate 609 drives the scraper 610 to move synchronously. The scraper 610 can push the dust accumulated on the filter screen 607 into the corresponding dust collection chamber by making active contact with the upper surface of the filter screen 607, so as to avoid dust accumulation and blockage of the air holes of the filter screen 607. At the same time, it can realize the automatic collection of dust on the filter screen 607, avoiding the inefficiency of manual operation.

[0050] It is worth noting that the top of the fixed bracket 701 is provided with a Y-shaped part 7011, and the top two ends of the Y-shaped part 7011 are respectively provided with U-shaped parts 7012 for supporting the tee pipe a404, the water guide pipe 405 or the tee pipe b406. Through the Y-shaped part 7011 and the U-shaped part 7012, the tee pipe a404, the water guide pipe 405 and the tee pipe b406 can be stably supported, thereby improving the stability of the device.

[0051] It is also worth noting that the movable arc plate 708 is a downwardly convex arc plate, and the fixed arc plate 702 is an upwardly concave arc plate that cooperates with the movable arc plate 708. The rotation axis of the movable arc plate 708 is coaxial with the rotation axis of the water guide pipe 405. The movable arc plate 708 provides stable support for the rotation of the water guide pipe 405 by rotating with the fixed arc plate 702.

[0052] It is also worth noting that the size of the transmission pulley c715 is smaller than that of the transmission pulley b713. Specifically, the radius ratio of the transmission pulley c715 and the transmission pulley b713 can be 1:(2+N), where N is any positive number. This facilitates the reduction and transmission of the rotational speed of the rotating paddle 717, avoiding the problem that the water guide pipe 405 may accelerate the wear of parts due to excessive swing speed.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dust suppression spray device for a mining excavator, comprising an excavator body, a mounting frame on the excavator body, and a mining head rotatably mounted at one end of the mounting frame, characterized in that... Also includes: A front spray assembly is located on the outer side of the mounting frame near the mining head. The front spray assembly is movably connected to the mining head and is used to spray dust in the forward direction of the mining machine. A water guiding component is installed on the mining machine body and connected to the front spray component. The water guiding component includes water guiding pipes that are symmetrically and movably distributed on both sides of the mining machine body. A three-way pipe b connected to the front spray component is provided above the end of the mining machine body near the mining head. The side spray assembly is provided with several units that are equally spaced on the water guide pipe. The side spray assembly is used to spray dust on the side of the mining machine body. An automatic adjustment component is installed on the mining machine body and connected to the water pipe. The automatic adjustment component expands the dust suppression range on the side of the mining machine body by driving the side spray component to swing back and forth. The front spray assembly includes a water storage ring cylinder installed on the mounting frame near the mining head. One side of the water storage ring cylinder is connected to a three-way pipe b. Several diversion pipes a are distributed circumferentially on the other side of the water storage ring cylinder. One end of the diversion pipe a is rotatably engaged with the water storage ring cylinder. The end of the diversion pipe a away from the water storage ring cylinder is connected to an atomizing nozzle a. A movable module is provided between the water storage ring cylinder and the mining head. Diverter pipe a is designed as a bend, with the end of diverter pipe a away from the water storage ring bent outwards.

2. The dust suppression spray device for mining excavators according to claim 1, characterized in that, The water guiding assembly also includes a water tank located at the end of the mining machine body away from the mining head. The water tank is used to store spray water. A high-pressure water pump is installed on the top of the water tank. The input end of the high-pressure water pump is connected to the spray water inside the water tank through a water inlet pipe. The output end of the high-pressure water pump is connected to a three-way pipe a. The end of the three-way pipe a away from the high-pressure water pump is rotatably connected to the inlet end of the corresponding water guiding pipe. The end of the three-way pipe b near the three-way pipe a is rotatably connected to the outlet end of the corresponding water guiding pipe.

3. The dust suppression spray device for mining excavators according to claim 2, characterized in that, The active module includes a cam mounted on the mining head and several transmission pulleys a mounted on the diversion pipe a. The several transmission pulleys a are connected by a transmission belt a. A transmission gear ring is installed on the outer wall of a diversion pipe a located above the mining head. A guide bracket is provided at the top of the water storage ring cylinder. A lifting rack is slidably mounted inside the guide bracket and is movably sleeved on the outside of the corresponding diversion pipe a. The lifting rack meshes with the transmission gear ring. A counterweight abutment plate is provided at the bottom of the lifting rack to abut against the cam.

4. The dust suppression spray device for mining excavators according to claim 2, characterized in that, The side spray assembly includes several diversion pipes b evenly distributed on the water guide pipe. One end of each diversion pipe b is connected to the interior of the water guide pipe, and the other end of each diversion pipe b is connected to an atomizing nozzle b. An ejector pipe is connected to the upper part of the diversion pipe b near the atomizing nozzle b. An installation frame is installed above the ejector pipe. The bottom of the installation frame has a through hole connected to the ejector pipe. The installation frame has two partitions located at both ends of the through hole. The two partitions divide the internal space of the installation frame into a dust collection chamber, an air intake chamber, and a dust collection chamber. A filter screen is provided between the installation frame and the two partitions. A side groove is opened on the side wall of the installation frame. A counterweight slide plate that slides and engages with the side groove is movably installed inside the installation frame. A scraper plate that movably contacts the upper surface of the partition plate is provided at the bottom of the counterweight slide plate.

5. The dust suppression spray device for mining excavators according to claim 1, characterized in that, The automatic adjustment assembly includes several fixed supports symmetrically arranged on the top of the mining machine body. Each fixed support corresponds to one end of the water guide pipe. A fixed arc plate is provided on the side wall of each fixed support. A U-shaped support plate is installed on the top of each fixed support near the water guide pipe. A spiral groove is spirally arranged on the outer wall of the U-shaped support plate. A sliding column a is slidably arranged within the spiral groove. A movable frame is connected to the end of the sliding column a away from the spiral groove. A connecting frame is installed at the bottom of the water guide pipe. Movable arc plates that rotate with the fixed arc plates are provided at both ends of the connecting frame. A support groove is provided on the connecting frame. A support slide plate connected to the movable frame slides within the support groove. A power module is provided between the water guide pipe and the movable frame.

6. The dust suppression spray device for mining excavators according to claim 5, characterized in that, The power module includes a protruding frame disposed on the upper part of the water guide pipe and connected to the inside of the water guide pipe. A rotating paddle that is in active contact with the spray water is rotatably disposed between the water guide pipe and the protruding frame. One end of the rotating paddle passes through the protruding frame and is connected to the transmission pulley c. A transmission pulley b is rotatably disposed on the connecting frame. The transmission pulley b and the transmission pulley c are connected by a transmission belt b. A sliding column b is disposed on the side wall of the transmission pulley b. A movable groove plate that slides with the sliding column b is connected to the end of the movable frame near the transmission pulley b.

7. The dust suppression spray device for mining excavators according to claim 5, characterized in that, The top of the fixed bracket is provided with a Y-shaped part, and the top two ends of the Y-shaped part are respectively provided with U-shaped parts for supporting the tee pipe a, the water guide pipe or the tee pipe b.

Images