A high-efficiency dust prevention and reduction method and device for fast excavation working face

Abstract

The present invention relates to a method and device for efficiently preventing and reducing dust on a fast excavation working face, belonging to the technical field of dust control in coal mines, including a dust prevention device that can prevent dust in front of the front face of the excavation and anchoring machine, and a dust removal device that can purify dust in front of the front face, provided on the front face of the excavation and anchoring machine; the dust prevention device includes an air curtain and a water curtain, the air curtain includes a transverse air curtain rod located above and behind the excavation head and spanning the front face of the excavation and anchoring machine, and vertical air curtain rods provided at both ends of the transverse air curtain rod; the water curtain includes a transverse spray rod located above and behind the excavation head and spanning the groove of the front face of the excavation and anchoring machine to prevent dust from spreading backward from the gap between the rocker arm and the fuselage. The present invention controls dust near the front face by providing a dust prevention device, prevents dust from spreading backward, and timely purifies dust by providing a dust removal device, thereby reducing dust pollution on the fast excavation working face.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine dust control, and relates to a high-efficiency dust prevention and reduction method and device for a fast-digging working face. Background Art

[0002] In recent years, with the continuous development of science and technology, the research and development capabilities of mechanized equipment have been continuously improved, and coal mining equipment has also been rapidly improved. The traditional fast excavation face has a slow excavation speed, and the emergence of new fast excavators has completely solved this problem. However, with the increase in excavation speed, the amount of dust generated has also increased. In addition, due to the large size of the fast excavator, which occupies more than 80% of the entire tunnel section, it is difficult to arrange traditional dust removal methods, making the dust pollution of the fast excavation face high, seriously affecting the physical and mental health of workers and the safe production of coal mines.

[0003] At present, since the fast excavation face belongs to the emerging coal cutting process in coal mines, there are no effective measures for the dust control of the fast excavation face. Usually, traditional dust control measures such as long pressure short extraction dust removal, spray dust reduction, and foam dust removal are used. However, due to the large size of the excavation and anchoring machine, in addition to normal excavation operations, support operations are also required. The excavation and anchoring machine is also equipped with an anchor trolley, and there is not much space to arrange the long pressure short extraction dust removal system. In addition, for spray dust reduction and foam dust removal measures, due to the fast excavation speed and huge dust production of the fast excavation face, the dust cannot be effectively purified. From the on-site investigation, it was found that if the dust generated by the drum coal cutting cannot be purified in time, a large amount of dust will quickly spread to the rear, and the serious pollution distance is as high as 200m. There are no effective control measures for the dust control of the fast excavation face abroad. Summary of the invention

[0004] In view of this, the purpose of this application is to provide a method and device for efficiently preventing and reducing dust in a fast excavation working face, so as to control the dust near the head, prevent the dust from spreading to the rear, and purify the dust in time to reduce dust pollution in the fast excavation working face.

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

[0006] A highly efficient dust prevention and reduction method for a fast excavation working face comprises a dust prevention device which is arranged on the front end face of an integrated digging and anchoring machine and can prevent dust in front of the front end face of the integrated digging and anchoring machine, and a dust removal device which is arranged on the front end face of the integrated digging and anchoring machine and can purify dust in front of the front end face.

[0007] Optionally, the method for setting up the dust blocking device includes: setting an air curtain in the shape of a door frame on the front end face of the drilling and anchoring machine, and setting a water curtain on the upper part of the air curtain, the air curtain includes a transverse air curtain rod and a vertical air curtain rod respectively arranged on the upper part and both sides of the front end face of the drilling and anchoring machine, and the air curtain outlets of the transverse air curtain rod and the vertical air curtain rod are directed toward one side of the drilling head and are arranged obliquely upward, and the water curtain includes a transverse spray rod arranged at the groove on the front end face of the drilling and anchoring machine to prevent dust from spreading to the rear from the gap between the rocker arm and the fuselage.

[0008] Optionally, the method for setting up the dust removal device includes: setting up spray-injected dust collectors on both sides of the front end face of the integrated drilling and anchoring machine, and making the air inlet of the spray-injected dust collector face the drilling head and the air outlet of the spray-injected dust collector face downward.

[0009] The present invention also provides a high-efficiency dust prevention and reduction device for a fast excavation working face, including a dust prevention device located at the front end face of the drilling and anchoring machine to block dust in front of the front end face of the drilling and anchoring machine, the dust prevention device includes an air curtain and a water curtain, the air curtain includes a transverse air curtain rod located above and behind the drilling head and spanning the front end face of the drilling and anchoring machine, and vertical air curtain rods arranged at both ends of the transverse air curtain rod; the water curtain includes a transverse spray rod located above and behind the drilling head and spanning the groove of the front end face of the drilling and anchoring machine to prevent dust from spreading backward from the gap between the rocker arm and the fuselage; and also includes a dust removal device located at the front end face of the drilling and anchoring machine to purify the dust in front of the front end face of the drilling and anchoring machine.

[0010] Optionally, the air curtain outlet of the transverse air curtain rod is arranged toward one side of the tunneling head and obliquely upward.

[0011] Optionally, the transverse air curtain rods and the vertical air curtain rods form a door frame to surround the rocker arm for installing the tunneling head, the transverse air curtain rods are connected to the vertical air curtain rods located on both sides thereof, and the transverse air curtain rods and the vertical air curtain rods are connected to a fan fixed on the drilling and anchoring machine through an air duct.

[0012] Optionally, the dust removal device includes at least one spray-injected dust collector arranged on the front end face of the drilling and anchoring machine, the spray-injected dust collector includes a spray-injected dust collector air inlet and a spray-injected dust collector air outlet, and a spray-injected dust collector water nozzle arranged between the spray-injected dust collector air inlet and the spray-injected dust collector air outlet, the spray-injected dust collector air inlet is arranged toward the drilling head, and the spray-injected dust collector air outlet is arranged downward.

[0013] Optionally, the dust removal device includes two spray-injection dust collectors respectively arranged on both sides of the front end face of the integrated mining and anchoring machine.

[0014] Optionally, the transverse spray rod is evenly distributed with a plurality of fan-shaped nozzles along its length direction.

[0015] Optionally, the dust removal device comprises a water spray dust removal device, and the water inlet of the water spray dust removal device and the water inlet of the lateral spray rod are connected to a water pump station fixed on the anchor drilling machine through a water pipe.

[0016] The beneficial effects of the present invention are as follows: by arranging a dust blocking device, the dust is controlled near the head, and the dust is prevented from spreading rearward; by arranging a dust removal device, the dust is purified in time, and the dust pollution of the fast excavation working surface is reduced; the dust generated by the drum cutting coal of the drilling and anchoring machine can be effectively controlled near the head, and the dust is prevented from spreading rearward; the dust spread to the rear and the dust controlled by the wind curtain in front of the drilling and anchoring machine are purified in time, which significantly reduces the dust pollution problem of the fast excavation working surface.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 Schematic diagram of the structure of the efficient dust prevention and reduction device for fast excavation working face Figure 1 ;

[0020] Figure 2 Schematic diagram of the structure of the efficient dust prevention and reduction device for fast excavation working face Figure 2 .

[0021] Figure numerals: spray rod 1, nozzle 2, vertical air curtain rod 3, air curtain air outlet 4, air duct 5, water pipe 6, fan 7, water pump station 8, spray-injected dust collector air outlet 9, spray-injected dust collector air inlet 10, spray-injected dust collector water nozzle 11, horizontal air curtain rod 12. DETAILED DESCRIPTION

[0022] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0023] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0024] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] See also Figure 1-2 A high-efficiency dust prevention and reduction method for a fast excavation working face is provided. A dust prevention device capable of blocking dust in front of the front end face of the excavator and anchoring machine is provided on the front end face of the excavator and anchoring machine, and a dust removal device capable of purifying dust in front of the front end face is provided on the front end face of the excavator and anchoring machine.

[0026] Preferably, the setting method of the dust blocking device includes: setting an air curtain in the shape of a door frame on the front end face of the drilling and anchoring machine, and setting a water curtain on the upper part of the air curtain, the air curtain includes a transverse air curtain rod 12 and a vertical air curtain rod 3 respectively arranged on the upper part and both sides of the front end face of the drilling and anchoring machine, and the air curtain outlets 4 of the transverse air curtain rod 12 and the vertical air curtain rod 3 are facing one side of the drilling head and are arranged obliquely upward, and the water curtain includes a transverse spray rod arranged at the groove on the front end face of the drilling and anchoring machine to prevent dust from spreading backward from the gap between the rocker arm and the fuselage.

[0027] Preferably, the method for setting up the dust removal device includes: setting up spray-injected dust collectors on both sides of the front end face of the anchor drilling machine, and making the air inlet 10 of the spray-injected dust collector face the drilling head, and the air outlet 9 of the spray-injected dust collector face downward.

[0028] The present invention also provides a high-efficiency dust prevention and reduction device for a fast excavation working face, including a dust prevention device located at the front end face of the drilling and anchoring machine to prevent dust from spreading in front of the front end face of the drilling and anchoring machine, the dust prevention device including an air curtain and a water curtain, the air curtain including a transverse air curtain rod 12 located above and behind the drilling head and spanning the front end face of the drilling and anchoring machine, and vertical air curtain rods 3 arranged at both ends of the transverse air curtain rod 12; the water curtain includes a transverse spray rod 1 located above and behind the drilling head and spanning the groove of the front end face of the drilling and anchoring machine to prevent dust from spreading backwards from the gap between the rocker arm and the fuselage; and also includes a dust removal device located at the front end face of the drilling and anchoring machine to purify the dust located in front of the front end face of the drilling and anchoring machine.

[0029] Preferably, the air curtain outlet 4 of the transverse air curtain rod 12 is arranged toward one side of the tunneling head and obliquely upward.

[0030] Preferably, the transverse air curtain rod 12 and the vertical air curtain rod 3 form a door frame to surround the rocker arm for installing the tunneling head, the transverse air curtain rod 12 is connected to the vertical air curtain rod 3 located on both sides thereof, and the transverse air curtain rod 12 and the vertical air curtain rod 3 are connected to the fan 7 fixed on the drilling and anchoring machine through the air duct 5.

[0031] Preferably, the dust removal device includes at least one spray-injected dust collector arranged on the front end face of the drilling and anchoring machine, the spray-injected dust collector includes a spray-injected dust collector air inlet 10 and a spray-injected dust collector air outlet 9, and a spray-injected dust collector water nozzle 11 arranged between the spray-injected dust collector air inlet 10 and the spray-injected dust collector air outlet 9, the spray-injected dust collector air inlet 10 is arranged toward the drilling head, and the spray-injected dust collector air outlet 9 is arranged downward.

[0032] Preferably, the dust removal device includes two spray-injection dust collectors respectively arranged on both sides of the front end face of the integrated mining and anchoring machine.

[0033] Preferably, the transverse spray rod 1 is evenly distributed with a plurality of fan-shaped nozzles 2 along its length. The fan-shaped nozzles 2 can expand the coverage of the spraying and form a continuous and dense water curtain on the front end of the anchoring machine.

[0034] Preferably, the dust removal device comprises a water spray dust removal device, and the water inlet of the water spray dust removal device and the water inlet of the lateral spray rod 1 are connected to the water pump station 8 fixed on the anchor drilling machine through a water pipe 6.

[0035] Example

[0036] A high-efficiency dust prevention and reduction device for a fast excavation working face includes a dust prevention device and a dust removal device arranged on a drilling and anchoring machine; the dust prevention device is located behind the drilling head, including a wind curtain in the shape of a door frame and a water curtain located above the wind curtain, the wind curtain surrounds a rocker arm connected to the drilling head, and the wind curtain includes a transverse air curtain rod 12 across the front end face of the drilling and anchoring machine and vertical air curtain rods 3 arranged at both ends of the transverse air curtain rod 12; the water curtain includes a transverse spray rod 1 located above and behind the drilling head and across the groove of the front end face of the drilling and anchoring machine to prevent dust from spreading from the gap between the rocker arm and the fuselage to the rear of the front end face. Fan-shaped nozzles 2 are evenly arranged on the transverse spray rod 1 to expand the coverage of the spraying and form a continuous and dense water curtain on the front end face of the drilling and anchoring machine.

[0037] By enclosing the transverse air curtain rod 12 and the vertical air curtain rod 3 into a door frame to surround the rocker arm connected to the tunneling head, and at the same time arranging the transverse spray rod 1 on the upper part of the front end face, the dust generated by the drum cutting coal of the anchor and digging machine can be effectively controlled near the head. In order to facilitate the arrangement of pipelines, the transverse spray rod 1 and the transverse air curtain rod 12 are arranged side by side in this embodiment, and are fixed together by welding. In order to reduce the wiring of air ducts, the transverse air curtain rod 12 is connected to the vertical air curtain rod 3 on both sides thereof in this embodiment, and is fixed to the front end face of the anchor and digging machine by welding. The transverse air curtain rod 12 and the vertical air curtain rod 3 are connected to the fan 7 fixed on the anchor and digging machine through the wind tube 5.

[0038] The dust removal device includes two spray-inducing dust collectors respectively arranged on both sides of the horizontal spray bar 1. The spray-inducing dust collector includes a spray-inducing dust collector air inlet 10 and a spray-inducing dust collector air outlet 9, and a spray-inducing dust collector water nozzle 11 arranged between the spray-inducing dust collector air inlet 10 and the spray-inducing dust collector air outlet 9. The spray-inducing dust collector air inlet 10 is arranged toward the excavation head, and the spray-inducing dust collector air outlet 9 is arranged downward. Dust enters the spray-inducing dust collector from the spray-inducing dust collector air inlet 10 along with the air flow, and is purified by the spray-inducing dust collector water nozzle 11 and discharged through the spray-inducing dust collector air outlet 9. The water inlet of the spray-inducing dust collector and the water inlet of the horizontal spray bar 1 are connected to the water pump station 8 fixed on the anchor-digger through the water pipe 6.

[0039] The dust prevention and dust reduction principle of the present invention is as follows: when the anchor-drilling machine starts to dig, the water pump station 8 and the fan 7 are turned on. At this time, the wind flow coming out of the wind curtain outlet forms a dust-blocking wind curtain near the rocker arm of the anchor-drilling machine, controlling the dust near the end and preventing the dust from spreading to the rear. At the same time, the pump station is turned on. At this time, the water mist coming out of the fan-shaped nozzle 2 on the spray rod 1 can form a water curtain to purify the dust spreading to the rear from the gap between the rocker arm and the fuselage. And the injection nozzle 2 of the spray-injection dust collector is used to form a negative pressure, and the dust in front of the anchor-drilling machine controlled by the wind curtain is sucked in from the air inlet 10 of the spray-injection dust collector, and then purified by the spray-injection dust collector water nozzle 11 and discharged through the spray-injection dust collector outlet 9.

[0040] The present invention can effectively control the dust generated by the drum cutting coal of the integrated digging and anchoring machine near the head, prevent the dust from spreading backwards, and promptly purify the dust spreading backwards and the dust controlled by the wind curtain in front of the integrated digging and anchoring machine, thereby significantly reducing the dust pollution problem on the fast digging working surface. The device has a simple structure, high dust blocking and dust reduction efficiency, and is easy to install and maintain.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A high-efficiency dust prevention and reduction device for fast excavation working face, characterized by: The invention comprises a dust blocking device located at the front end face of the drilling and anchoring machine to block dust in front of the front end face of the drilling and anchoring machine, the dust blocking device comprises an air curtain and a water curtain, the air curtain comprises a transverse air curtain rod located above and behind the drilling head and spanning the front end face of the drilling and anchoring machine, and vertical air curtain rods arranged at both ends of the transverse air curtain rod; the water curtain comprises a transverse spray rod located above and behind the drilling head and spanning the groove of the front end face of the drilling and anchoring machine to block dust from spreading backward from the gap between the rocker arm and the fuselage; the invention also comprises a dust removal device located at the front end face of the drilling and anchoring machine to purify the dust in front of the front end face of the drilling and anchoring machine; the air curtain air outlet of the transverse air curtain rod faces one side of the drilling head and is arranged obliquely upward; The dust removal device includes at least one spray-injected dust collector arranged on the front end of the anchor-digger, the spray-injected dust collector includes an air inlet of the spray-injected dust collector and an air outlet of the spray-injected dust collector, and a water nozzle of the spray-injected dust collector arranged between the air inlet of the spray-injected dust collector and the air outlet of the spray-injected dust collector, the air inlet of the spray-injected dust collector is arranged toward the tunneling head, and the air outlet of the spray-injected dust collector is arranged downward; The dust removal device comprises a water spray dust removal device, and the water inlet of the water spray dust removal device and the water inlet of the lateral spray rod are connected to a water pump station fixed on the anchor-digger through a water pipe.

2. According to claim 1, a high-efficiency dust prevention and reduction device for fast excavation working face is characterized by: The horizontal air curtain rods and the vertical air curtain rods form a door frame to surround the rocker arm for installing the tunneling head. The horizontal air curtain rods are connected to the vertical air curtain rods located on both sides thereof. The horizontal air curtain rods and the vertical air curtain rods are connected to the fan fixed on the drilling and anchoring machine through the air duct.

3. The high-efficiency dust prevention and reduction device for fast excavation working face according to claim 1 is characterized by: The dust removal device comprises two spray-injection dust collectors respectively arranged on both sides of the front end surface of the anchor-digger machine.

4. The high-efficiency dust prevention and reduction device for fast excavation working face according to claim 1 is characterized by: The transverse spray rod is evenly distributed with a plurality of fan-shaped nozzles along its length direction.

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