Continuous miner cutting dust source high-pressure atomization closed dust control device

Abstract

The present application belongs to the technical field of coal mine dust control, and discloses a continuous miner cutting dust source high-pressure atomization closed dust control device, which comprises a continuous miner water supply pipeline pressure increasing assembly, wherein the continuous miner water supply pipeline pressure increasing assembly is connected with a continuous miner cutting dust source external spraying assembly through a spraying pump water pipeline; the continuous miner cutting dust source external spraying assembly comprises an external spraying dust control fixed part, a detachable adjustable ball head is connected to a spraying port of an end surface of the external spraying dust control fixed part, a fan-shaped atomization nozzle or a wide-angle mixed nozzle is detachably connected to the adjustable ball head, and the fan-shaped atomization nozzle and the wide-angle mixed nozzle are staggered distributed. The continuous miner water supply pipeline pressure increasing assembly supplies water to the continuous miner cutting dust source external spraying assembly after pressurizing the water, and the high-pressure water controls and reduces dust in the cutting area through the staggered distributed nozzles; the spraying direction of the nozzle is adjusted by adjusting the adjustable ball head; the nozzle is removed from the adjustable ball head to avoid damaging the internal thread of the spraying device when the nozzle is disassembled.

Description

Technical Field

[0001] This invention belongs to the field of coal mine dust control technology, specifically relating to a high-pressure atomization closed dust control and reduction device for cutting dust sources in continuous mining machines. Background Technology

[0002] A continuous miner is a comprehensive tunneling and shortwall mining equipment that integrates cutting, traveling, transporting, and dust suppression spraying into one unit. A continuous miner consists of a cutting section, a loading section, a traveling section, a hydraulic system, an electrical system, a cooling spray dust suppression device, and safety protection devices. The "drop, loading, transport, and support" production processes at the continuous miner face are completed by the continuous miner and its supporting equipment, generally employing a construction method of alternating and simultaneous excavation and support of two roadways and connecting roadways.

[0003] Dust control at tunneling faces plays a crucial role in underground coal mine dust management. With the increasing emphasis on green and safe production in coal mines, improving dust control at tunneling faces has become a major concern. Therefore, dust control measures are necessary for continuous mining machine tunneling faces.

[0004] Dust control at the tunneling face requires the installation of an external spray dust control device. This device is connected to a surface water source. However, since the water source at the tunneling face is supplied by static pressure water from the surface, the water pressure at the end of the external spray on the continuous mining machine is too low to meet the pressure requirements of the onboard external spray dust control device. Therefore, it is necessary to consider pressurizing the water pressure of the external spray dust control device.

[0005] Meanwhile, nozzles are installed on the dust control and spraying device outside the tunneling face of the continuous mining machine. Since the nozzles are consumables, they are frequently disassembled, which can easily cause the internal threads of some of the female heads of the external spraying device to be worn flat or corroded, greatly reducing their pressure resistance.

[0006] To address this, a high-pressure atomization closed dust control and reduction device is provided for the dust source of a continuous mining machine. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the present invention aims to provide a high-pressure atomization closed dust control device for cutting dust sources in continuous mining machines. This device solves the problem in existing technologies where dust is suppressed at the working face of continuous mining machines by pressurizing the spray water to prevent the internal threads of the external spray device from being worn flat or corroded.

[0008] The objective of this invention can be achieved through the following technical solutions:

[0009] A high-pressure atomization closed dust control and reduction device for cutting dust sources of continuous mining machine includes a pressurization component for the water supply pipeline of continuous mining machine. The pressurization component for the water supply pipeline of continuous mining machine is fixedly connected to the water inlet end of the external spray component of the cutting dust source of continuous mining machine through the water outlet pipeline of the spray pump.

[0010] The dust source external spraying component of the continuous mining machine includes an external spraying dust control and suppression component. The end face of the external spraying dust control and suppression component is provided with spray nozzles in an alternating manner. An adjustable ball head is detachably connected inside the spray nozzle. A fan-shaped atomizing nozzle or a wide-angle mixing nozzle is detachably connected to the adjustable ball head. The fan-shaped atomizing nozzle and the wide-angle mixing nozzle are distributed alternately.

[0011] The principles and technical effects of the above technical solution are as follows:

[0012] The continuous miner's water supply pipeline pressurization component increases the static pressure of the ground water supply. This pressurized water is then supplied to the external dust suppression spray component via a spray pump. The high-pressure water is encapsulated and sprayed through fan-shaped atomizing nozzles to seal and encapsulate dust in the cutting area, while wide-angle mixing nozzles capture and settle the dust. Alternating the use of fan-shaped atomizing nozzles and wide-angle mixing nozzles further enhances dust control. Simultaneously, adjusting the adjustable ball head allows for optimal nozzle spray direction, further improving the effective sealing and settling of dust generated during the mining process. If a nozzle needs replacement, it is simply removed from the adjustable ball head; the ball head itself is not removed, thus avoiding frequent nozzle disassembly and potential damage to the internal threads of the external dust suppression spray component.

[0013] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0014] A fixed connection refers to a connection in which parts or components are fixed in place, with no relative movement between them. These connections are divided into two types: detachable and non-detachable.

[0015] (1) Detachable connections use screws, splines, wedges, etc. to fix parts together. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of bolts, keys, wedges) and properly tightened.

[0016] (2) Non-removable connections mainly refer to welding, riveting, and tenon joints. Since disassembly is required by forging, sawing, or oxy-acetylene cutting during repair or replacement, the parts generally cannot be reused. At the same time, attention should be paid to the process quality, technical inspection, and remedial measures (such as correction, polishing, etc.) when making connections.

[0017] The beneficial effects of this invention are:

[0018] 1. This invention uses a fan-shaped atomizing nozzle to seal and encapsulate dust in the cutting area, reducing dust escape from the continuous mining machine's cutting area; it uses a wide-angle mixing nozzle to capture and settle dust in the cutting area; to facilitate adjustment of the spray direction, an adjustable ball head is set between the nozzle and the external spray dust control and settling device. By adjusting the adjustable ball head, the optimal nozzle spray direction can be found, which can effectively seal, encapsulate, and settle the dust generated by the continuous mining machine during the tunneling process.

[0019] 2. This invention uses an external spray dust control fastener connected to an adjustable ball head, which is connected to a nozzle. The nozzle is a consumable. If the nozzle needs to be replaced, the nozzle only needs to be removed from the adjustable ball head, without removing the adjustable ball head. This avoids the need to frequently disassemble the nozzle and damage the internal threads of the external spray dust control fastener.

[0020] 3. The pressurization component of the water supply pipeline of the continuous mining machine used in this invention can pressurize the water of the spray component at the transfer point of the tunneling face and the external spray component of the dust source of the continuous mining machine, so that the fan-shaped atomizing nozzle and the wide-angle mixing nozzle can achieve the best spray pressure for atomization effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the high-pressure atomization closed dust control and reduction device for cutting dust sources in a continuous mining machine according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the pressurization component of the water supply pipeline of the continuous mining machine according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the external spraying component for cutting dust sources in a continuous mining machine according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the upper external spray dust control section structure according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the two-sided external spray dust control section in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the lower external spray dust control section structure according to an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the connection structure between the atomizing nozzle and the adjustable ball head according to an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the wide-angle hybrid nozzle swirl structure according to an embodiment of the present invention. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0032] like Figure 1-8 As shown, a high-pressure atomization closed dust control device for cutting dust sources of a continuous mining machine includes a continuous mining machine water supply pipeline pressurization component 100, which is fixedly connected to the water inlet end of the continuous mining machine cutting dust source external spray component 300 through the spray pump outlet pipeline 6.

[0033] The dust source external spraying component 300 of the continuous mining machine includes an external spraying dust control and suppression component 310. The end face of the external spraying dust control and suppression component 310 is provided with multiple spray nozzles. An adjustable ball head 330 is detachably connected inside the spray nozzle. The adjustable ball head 330 is detachably connected to a fan-shaped atomizing nozzle 320 or a wide-angle mixing nozzle 370. The fan-shaped atomizing nozzle 320 and the wide-angle mixing nozzle 370 are distributed alternately.

[0034] When the continuous mining machine is working, the pressurization component 100 of the continuous mining machine water supply pipeline pressurizes the static pressure water supply from the ground. The pressurized water source is supplied to the spray component 200 at the transfer point of the tunnel face and the external spray component 300 of the dust source of the continuous mining machine through the spray pump outlet pipeline 6. The high-pressure water seals and wraps the dust in the cutting area through the fan-shaped atomizing nozzle 320 and captures and settles the dust in the cutting area through the wide-angle mixing nozzle 370. The staggered distribution of the fan-shaped atomizing nozzle and the wide-angle mixing nozzle can more effectively control and reduce dust.

[0035] The adjustable ball head 330 allows for easy adjustment of the spray direction. By adjusting the adjustable ball head 330, the optimal nozzle spray direction can be found, which can more effectively seal, encapsulate, and settle the dust generated by the continuous mining machine during the tunneling process.

[0036] The external spray dust control device 310 is connected to the adjustable ball head 330, which is connected to the nozzle. The nozzle is a consumable. If the nozzle needs to be replaced, simply remove the nozzle from the adjustable ball head 330. It is not necessary to remove the adjustable ball head 330, thus avoiding damage to the internal threads of the spray device caused by frequent nozzle disassembly.

[0037] The fan-shaped atomizing nozzle 320 sprays in a fan shape, with the spray area being linear. Multiple fan-shaped atomizing nozzles can be installed through the external spray control dust suppression firmware 310 to seal and control the dust in the cutting area, preventing the dust from escaping outward.

[0038] The 370 wide-angle mixing nozzle has a built-in swirl core, and the spray pattern is a solid cone spray. The spray area is circular, with a large range and uniform atomization, which can effectively capture and settle dust in the cutting area.

[0039] The pressurization assembly 100 of the water supply pipeline of the continuous mining machine consists of a spray pump 110, a motor 120, and an electrical control module 130. The output end of the motor 120 is connected to the spray pump 110, and the electrical control module 130 is electrically connected to the motor 120. The electrical control module 130 controls the motor 120, which drives the spray pump 110 to work, thereby pressurizing the water supply to the external spray assembly 300 of the dust source interception unit of the continuous mining machine.

[0040] The spray pump 110, motor 120, and electrical control module 130 are all fixedly connected to platform 1, which is erected on the upper end of belt 2 at the tail of the conveyor belt at the tunneling face. This setup is both safe and convenient to operate, preventing vibrations and coal dust generated during continuous mining operations from affecting the service life of the spray pump 110, motor 120, and electrical control module 130. It also facilitates the operation and movement of the continuous mining machine's water supply pipeline booster assembly 100 by underground workers, meaning the continuous mining machine's water supply pipeline booster assembly 100 can move forward together with the equipment train on belt 2.

[0041] The spray pump 110 is fixedly connected to a spray pump inlet pipe 3 at its inlet end. A filter 4 is fixedly connected to the inlet end of the spray pump inlet pipe 3, and a tunnel face water supply pipe 5 is fixedly connected to the inlet end of the filter 4. The spray pump 110 is fixedly connected to a spray pump outlet pipe 6 at its outlet end. Low-pressure water from the tunnel face water supply pipe 5 flows through the filter 4 into the spray pump inlet pipe 3, and then into the spray pump 110. The low-pressure water is pressurized by the spray pump 110 and converted into high-pressure water. The high-pressure water flows through the spray pump outlet pipe 6, which is fixedly connected to the inlet end of the continuous mining machine's cutting dust source external spray assembly 300, supplying water to the continuous mining machine's cutting dust source external spray assembly 300. The filter 4 is installed on the tunnel face water supply pipe 5 to prevent dirt and impurities from entering the spray pump 110 and the spray system, thus improving the service life of various valves in the spray pump 110.

[0042] The spray pump 110 is also fixedly connected to a spray pump overflow pipe 7, and the other end of the spray pump overflow pipe 7 is fixedly connected to the drainage pipe 8 at the tunnel face. The overflow from the overflow valve flows into the spray pump overflow pipe 7, so that the pressure in the controlled system is kept constant, thereby realizing pressure regulation, pressure stabilization and pressure limiting.

[0043] The external spray dust control firmware 310 is also equipped with a water inlet 340 and a drain outlet 350.

[0044] Open the drain plug 350 and let water flow into the inlet 340 to create a flowing water stream that flushes the internal space of the external spray, discharging dirt and impurities through the drain plug 350. The drain plug 350 can also serve as a backup inlet.

[0045] The spray pump outlet pipe 6 is also fixedly connected to the water inlet of the continuous mining machine motor cooling module 9, and the water outlet of the continuous mining machine motor cooling module 9 is fixedly connected to the water inlet 340 on the external spray dust control and suppression firmware 310 through the pipe.

[0046] External spray dust control fasteners 310 are fixedly connected to the upper, two sides and the lower end of the cutting section 360 of the continuous mining machine.

[0047] The high-pressure water received from the transfer point is introduced into the continuous mining machine motor cooling module 9 through the spray pump outlet pipe 6, and then into the external spray dust control and suppression firmware 310 through the water inlet 340. The nozzles built into the external spray dust control and suppression firmware 310 fix the spray direction of the nozzles by adjusting the adjustable ball head 330. The spray direction of the fan-shaped atomizing nozzles 320 on the upper, lower and side ends of the external spray dust control and suppression firmware 310 is adjusted outward to implement spray sealing and control of the dust generated by the cutting teeth on the continuous mining machine drum cutting coal and rock.

[0048] The continuous mining machine motor cooling module 9 is a water-cooled motor structure with built-in water in the continuous mining machine. External water is connected to the water-cooled motor, frequency converter box and hydraulic oil cooler to cool the relevant components.

[0049] Specifically, there are three external spray dust control and suppression components 310 at the top. Each external spray dust control and suppression component 310 has nine spray nozzles on its outer end face, which are staggered. Each spray nozzle contains either a fan-shaped atomizing nozzle 320 or a wide-angle mixing nozzle 370. The fan-shaped atomizing nozzle 320 and the wide-angle mixing nozzle 370 are staggered and set in the corresponding spray nozzles.

[0050] Specifically, there are two external spray dust control and suppression devices 310 on the side, one on each side. Each external spray dust control and suppression device 310 has five spray nozzles on its outer end face, which are staggered. Each spray nozzle contains either a fan-shaped atomizing nozzle 320 or a wide-angle mixing nozzle 370. The fan-shaped atomizing nozzle 320 and the wide-angle mixing nozzle 370 are staggered and set in the corresponding spray nozzles.

[0051] Specifically, there are two external spray dust control and suppression components 310 at the lower end. Each external spray dust control and suppression component 310 has 9 spray nozzles on its outer end face, which are staggered. Each spray nozzle contains either a fan-shaped atomizing nozzle 320 or a wide-angle mixing nozzle 370. The fan-shaped atomizing nozzle 320 and the wide-angle mixing nozzle 370 are staggered and set in the corresponding spray nozzles.

[0052] The wide-angle mixing nozzle 370 consists of a nozzle housing 371 and a swirling core 372, with the swirling core 372 located inside the nozzle housing 371. The wide-angle mixing nozzle 370 incorporates the swirling core 372, causing the liquid inside the nozzle to swirl within the swirling chamber under pressure differential, ultimately rotating and atomizing before being ejected from the nozzle. It offers advantages such as low power consumption, excellent atomization effect, and a large atomization cone angle.

[0053] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A high-pressure atomization closed-loop dust control and reduction device for dust sources from continuous mining machines, comprising a pressurization assembly (100) for the water supply pipeline of the continuous mining machine, characterized in that, The pressurization component (100) of the water supply pipeline of the continuous mining machine is fixedly connected to the water inlet end of the external spray component (300) of the dust source of the continuous mining machine through the water outlet pipeline (6); The dust source external spray assembly (300) of the continuous mining machine includes an external spray dust control and suppression component (310). The end face of the external spray dust control and suppression component (310) is provided with multiple spray nozzles. An adjustable ball head (330) is detachably connected inside the spray nozzle. A fan-shaped atomizing nozzle (320) or a wide-angle mixing nozzle (370) is detachably connected to the adjustable ball head (330). The fan-shaped atomizing nozzle (320) and the wide-angle mixing nozzle (370) are staggered. The fan-shaped atomizing nozzle (320) sprays a fan-shaped spray surface, and the spray area is linear; The wide-angle mixing nozzle (370) has a built-in swirl core, and the spray shape is a solid cone spray with a circular spray area; The pressurization assembly (100) of the water supply pipeline of the continuous mining machine consists of a spray pump (110), a motor (120) and an electrical control module (130). The spray pump (110), the motor (120) and the electrical control module (130) are all fixedly connected to the platform (1). The platform (1) is erected on the upper end of the belt (2) at the tail of the conveyor belt at the tunneling face.

2. The high-pressure atomization closed dust control and reduction device for cutting dust sources in a continuous mining machine according to claim 1, characterized in that, The output end of the electric motor (120) is connected to the spray pump (110), and the electronic control module (130) is electrically connected to the electric motor (120).

3. The high-pressure atomization closed dust control and reduction device for cutting dust sources in a continuous mining machine according to claim 2, characterized in that, The spray pump (110) is fixedly connected to a spray pump inlet pipe (3), the spray pump inlet pipe (3) is fixedly connected to a filter (4), and the filter (4) is fixedly connected to a tunnel face water supply pipe (5).

4. The high-pressure atomization closed dust control and reduction device for cutting dust sources in a continuous mining machine according to claim 2, characterized in that, The outlet end of the spray pump (110) is fixedly connected to the spray pump outlet pipe (6).

5. The high-pressure atomization closed dust control and reduction device for cutting dust sources in a continuous mining machine according to claim 2, characterized in that, The spray pump (110) is also fixedly connected to a spray pump overflow pipe (7), and the other end of the spray pump overflow pipe (7) is fixedly connected to the tunnel face drainage pipe (8).

6. The high-pressure atomization closed dust control and reduction device for cutting dust sources in a continuous mining machine according to claim 4, characterized in that, The external spray dust control and suppression firmware (310) is also provided with a water inlet (340) and a sewage outlet (350).

7. The high-pressure atomization closed dust control and reduction device for cutting dust sources in a continuous mining machine according to claim 6, characterized in that, The spray pump outlet pipe (6) is also fixedly connected to the water inlet of the continuous mining machine motor cooling module (9), and the water outlet of the continuous mining machine motor cooling module (9) is fixedly connected to the water inlet (340) on the external spray dust control fastener (310) through a pipe.

8. The high-pressure atomization closed dust control and reduction device for cutting dust sources in a continuous mining machine according to claim 1, characterized in that, The external spray dust control fastener (310) is fixedly connected to the upper end, both sides and the lower end of the cutting section (360) of the continuous mining machine.

9. The high-pressure atomization closed dust control and reduction device for cutting dust sources in a continuous mining machine according to claim 1, characterized in that, The end face of the external spray dust control fastener (310) is provided with a number of spray nozzles, which are staggered. Each spray nozzle is provided with a fan-shaped atomizing nozzle (320) or a wide-angle mixing nozzle (370). The fan-shaped atomizing nozzle (320) and the wide-angle mixing nozzle (370) are staggered and respectively set in the corresponding spray nozzle.

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