A method and system for controlling dust removal on the excavation working face of an integrated excavator and anchoring machine

Abstract

The present invention relates to a method and system for controlling dust removal on the excavation working face of an integrated digging and anchoring machine, which belongs to the technical field of dust prevention and control in mines. The dust generated in the production process of the integrated digging and anchoring machine is first moved to the rear side of the integrated digging and anchoring machine or the anchor trolley to solve the problem that large dust removal equipment and hard dust exhaust ducts cannot be arranged near the working face due to the production process of the excavation working face of the integrated digging and anchoring machine. Then, the dust is treated by a high-power dust removal fan that moves along the slideway following the integrated digging and anchoring machine. The present invention adopts the method of "moving the dust first and then treating it later", and the large dust removal equipment is placed at the rear, which overcomes the problem caused by limited space, has a larger processing air volume, and realizes the efficient collection and treatment of dust on the excavation working face of the integrated digging and anchoring machine. The theoretical dust reduction rate reaches 100%, and the actual dust reduction efficiency can reach more than 90%, which can significantly improve the working environment. In addition, it has the advantage of low cost and great promotion value.

Description

Technical Field

[0001] The invention belongs to the technical field of mine dust prevention and control, and relates to a method and system for controlling dust removal on a tunneling working face of a tunneling and anchoring integrated machine. Background Art

[0002] With the increasing mechanization of tunneling equipment, modern large-scale mines have seen the emergence of integrated digging and anchoring machines that integrate tunneling and support, achieving a monthly advance of more than 2,000 meters, greatly promoting the speed of tunneling and alleviating the problem of unbalanced mining. However, this is accompanied by the problem of high-concentration dust hazards. When the advance increases several times a day and the ventilation volume remains basically unchanged, the dust concentration of the digging and anchoring machine excavation face is several times higher than that of the comprehensive excavation face, which has become the first disaster factor for the digging and anchoring machine excavation face.

[0003] The traditional comprehensive excavation face uses a hard dust suction duct arranged in the tunnel space to extend the dust suction port to the tunnel boring machine surface, and the dust suction port is as close to the dust source as possible to achieve a better dust control and removal effect. The equipment matching of the excavation face of the integrated digging and anchoring machine is different from that of the traditional comprehensive excavation face. The integrated digging and anchoring machine is often used in combination with an anchor trolley and a self-moving tail to meet the needs of drilling and support while excavating. The three devices are not rigidly connected. Due to the space limitations of the tunnel, the integrated digging and anchoring machine is equipped with a small hydraulic dust removal fan with limited air volume and poor treatment effect. At the same time, due to the large size of the integrated digging and anchoring machine and the anchor trolley, the effective section of the tunnel is almost blocked, and it is impossible to set up a hard duct to extend the dust suction port to a position close to the head of the integrated digging and anchoring machine, making it difficult to achieve efficient collection and treatment of dust on the excavation face of the integrated digging and anchoring machine. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a method and system for controlling dust removal on the excavation working face of an integrated digging and anchoring machine, so as to realize efficient collection and treatment of dust on the excavation working face of the integrated digging and anchoring machine.

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

[0006] A method for controlling dust removal on the excavation working face of an integrated digger and anchor machine is provided. The dust generated during the production process of the integrated digger and anchor machine is firstly moved to the rear side of the integrated digger and anchor machine or an anchor trolley, and then the dust is processed by a high-power dust removal fan that moves along a slideway following the integrated digger and anchor machine.

[0007] Optionally, the dust generated during the production process of the drilling and anchoring machine is first collected by a dust extraction fan located on the body of the drilling and anchoring machine and equipped with a dust extraction fan, and then moved to the rear side of the drilling and anchoring machine or the anchor trolley through a soft fan arranged at the air outlet of the dust extraction fan, and then sucked into the dust removal fan for airflow purification through a hard negative pressure dust extraction fan connected to the dust suction port of the dust removal fan.

[0008] Optionally, the dust removal air volume Q3 of the dust removal fan is greater than the air supply volume Q1 of the excavation face, so as to form negative pressure ventilation in a tunnel from the dust removal fan suction port to the dust removal fan outlet, thereby controlling the dust within the space from the dust removal fan to the drilling and anchoring machine.

[0009] Optionally, the dust removal air volume Q3 of the dust removal fan>the air supply volume Q1 of the excavation face>the air suction volume Q2 of the dust extraction fan, so that the dust discharged from the soft air duct can be completely sucked into the dust suction port of the dust removal fan.

[0010] A dust removal system for controlling the excavation working face of an integrated digging and anchoring machine comprises a dust extraction fan arranged on the integrated digging and anchoring machine to suck dust from the excavation face, a soft air cylinder is connected to the air outlet of the dust extraction fan to move the dust to the rear side of the integrated digging and anchoring machine or the anchor trolley; and also comprises a dust removal fan located at the rear side of the integrated digging and anchoring machine or the anchor trolley and capable of following the integrated digging and anchoring machine to move along a slideway, the air inlet of the dust removal fan is fixedly connected to a hard negative pressure dust extraction air cylinder, the other end of the negative pressure dust extraction air cylinder extends to the air outlet of the soft air cylinder, and the dust suction port of the negative pressure dust extraction air cylinder is spatially connected to the air outlet of the soft air cylinder to form a front pressure and rear suction form.

[0011] Optionally, the dust removal fan is arranged on a runner or slide.

[0012] Optionally, the length of the negative pressure dust extraction fan is ≥20m.

[0013] The beneficial effects of the present invention are: adopting the method of "moving the dust first and then processing it", placing the large dust removal equipment at the rear, overcoming the problem caused by limited space, solving the problem that large dust removal equipment and hard dust extraction ducts cannot be arranged near the working face due to the production process of the excavation working face of the excavation and anchoring machine, and having a larger processing air volume, realizing the efficient collection and treatment of dust on the excavation working face of the excavation and anchoring machine, the theoretical dust collection volume reaches 100%, and the dust reduction efficiency in on-site use can reach more than 90%, which can significantly improve the working environment, thereby solving the problem of serious dust hazards on the excavation working face of the excavation and anchoring machine. In addition, it has the advantage of low cost and great promotion value.

[0014] 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

[0015] 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:

[0016] Figure 1It is a schematic diagram of the dust removal system for the excavation working face of the integrated excavator and anchor machine of the present invention.

[0017] Figure numerals: dust extraction fan 1, integrated digging and anchoring machine 2, soft air cylinder 3, anchor trolley 4, negative pressure dust extraction air cylinder 5, dust removal fan 6, air supply fan 7. DETAILED DESCRIPTION

[0018] 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.

[0019] 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.

[0020] 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.

[0021] See also Figure 1 A method for controlling dust removal on the excavation working face of an integrated digging and anchoring machine is provided. The dust generated during the production process of the integrated digging and anchoring machine 2 is first moved to the rear side of the integrated digging and anchoring machine 2 or the anchor trolley 4, and then the dust is processed by a high-power dust removal fan 6 that moves along the slideway following the integrated digging and anchoring machine 2.

[0022] The present invention adopts the method of "moving the dust first and then processing it", and places the large-scale dust removal equipment at the end, thus overcoming the problem caused by limited space and having a larger processing air volume; it solves the problem that the airborne dust removal fan of the drilling and anchoring machine is affected by space, the dust removal fan is small in size, and the processing air volume cannot meet the high-intensity dust generated by the drilling and anchoring machine.

[0023] Optionally, the dust generated during the production process of the drilling and anchoring machine 2 is first collected by a dust extraction fan 1 located on the body of the drilling and anchoring machine and provided with a dust extraction fan, and then moved to the rear side of the drilling and anchoring machine 2 or the anchor trolley 4 through a soft fan 3 arranged at the air outlet of the dust extraction fan, and then sucked into the dust removal fan 6 through a hard negative pressure dust extraction fan 5 connected to the dust suction port of the dust removal fan 6 for airflow purification.

[0024] Optionally, the dust removal air volume Q3 of the dust removal fan 6 is greater than the air supply volume Q1 of the excavation face, so as to form negative pressure ventilation in a section of the tunnel from the dust removal fan 6 suction port to the dust removal fan 6 outlet, change the wind flow direction in this area, and control the dust within the space from the dust removal fan 6 to the drilling and anchoring machine 2 without leaking out, thereby achieving efficient dust collection and treatment.

[0025] Optionally, the dust removal air volume Q3 of the dust removal fan 6>the air supply volume Q1 of the excavation face>the air suction volume Q2 of the dust extraction fan 1, so that the dust discharged from the soft air duct 3 can be completely sucked into the dust suction port of the dust removal fan 6.

[0026] A dust removal system for controlling the excavation working face of an integrated digging and anchoring machine comprises a dust extraction fan 1 arranged on the integrated digging and anchoring machine 2 to suck dust from the excavation face, a soft air cylinder 3 is connected to the air outlet of the dust extraction fan 1 to move the dust to the rear side of the integrated digging and anchoring machine 2 or the anchor trolley 4; and a dust removal fan 6 is also included which is located at the rear side of the integrated digging and anchoring machine 2 or the anchor trolley 4 and can follow the integrated digging and anchoring machine 2 to move along a slideway, the air inlet of the dust removal fan 6 is connected to a hard negative pressure dust extraction air cylinder 5, the other end of the negative pressure dust extraction air cylinder 5 extends to the air outlet of the soft air cylinder 3, and the dust suction port of the negative pressure dust extraction air cylinder is spatially connected to the air outlet of the soft air cylinder to form a front-pressure and rear-extraction form, thereby ensuring the maximum efficiency of collecting the transferred dust-laden airflow.

[0027] Optionally, the soft air duct 3 is arranged upwardly at an angle; the dust removal fan 6 is arranged at the tail of the self-moving machine or on a slideway through a trolley; the length of the negative pressure dust extraction air duct 5 is ≥20m, and the dust suction port of the negative pressure dust extraction air duct 5 corresponds to the dust exhaust port of the soft air duct 3.

[0028] The present invention proposes a dust removal theory of "front pressure and back extraction", that is, "move the dust first and then process it", by arranging an exhaust fan on the body of the drilling and anchoring machine 2, and connecting the air outlet of the fan to a section of soft air duct 3, so as to move the dust generated in the production process of the drilling and anchoring machine 2 to the rear side of the drilling and anchoring machine 2 or the anchor trolley 4, and then process the dust through the negative pressure dust extraction air duct 5 and the dust removal fan 6 arranged on the second transport and slideway.

[0029] The present invention changes the local flow field at the head by "pressing in front and pumping out at the back", controls the dust within a limited range at the head, eliminates the dust on the spot, prevents the dust from spreading further, has a significant dust control effect, and reduces the harm of dust to operators. The present invention solves the problem caused by limited space and overcomes many problems existing in the implementation of the long-pressing and short-pumping dust prevention theory in the excavation working face of the excavator-anchor machine.

[0030] Example

[0031] A dust removal system for the excavation working face of a drilling and anchoring machine, such as Figure 1 As shown, F1 is the local air supply fan 7, Q1 is the air supply volume of the excavation face; F2 is the dust extraction fan 1 designed and fixed on the integrated excavator and anchor machine 2, and the air suction volume is Q2; F3 is the dust removal fan 6, and the air processing volume is Q3; the air volume is: Q3>Q1>Q2. Since Q3 is the largest, the head supply volume is less than the air suction volume of the hard air duct, and part of the air volume from the air outlet of the dust removal fan 6 enters the exhaust system at a speed of v3, and the other part of the air volume flows to the head at a speed of v2, from the tunnel to the head. At this time, the travel area from the F3 position to the dust extraction port position area of ​​the hard negative pressure dust extraction air duct 5 is a negative pressure area, creating a local negative pressure ventilation effect, controlling the dust within the dust diffusion boundary, and solving the dust diffusion problem of the excavation working surface of the integrated excavator and anchor machine. Figure 1 In the figure, v1 is the wind speed of the dust extraction fan 1, and v1, v2, and v3 meet the wind speed requirements of the coal mine safety regulations.

[0032] The present invention eliminates the unfavorable influence of the negative pressure dust extraction duct 5 that cannot pass through the integrated digging and anchoring machine 2 and the anchor trolley 4, changes the full negative pressure dust extraction into a "front pressure and rear extraction" type, and treats the dust generated head-on in a "moving first, then processing" manner, with a larger processing air volume, and realizes efficient collection and on-site treatment of dust on the excavation working surface of the integrated digging and anchoring machine; uses wind flow to control dust within the range from the dust suction port to the head, preventing further diffusion of dust, and further improving the dust reduction rate. The dust reduction efficiency of the present invention can reach more than 90%, which can significantly improve the working environment and solve the problem of serious dust hazards on the excavation working surface of the integrated digging and anchoring machine. In addition, it has the advantage of low cost and great promotion value.

[0033] 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 method for controlling dust removal on the excavation working face of an integrated excavator and anchoring machine, characterized in that: It includes a dust extraction fan arranged on the drilling and anchoring machine to suck the dust on the excavation surface, and a soft air cylinder is connected to the air outlet of the dust extraction fan to move the dust to the rear side of the drilling and anchoring machine or the anchor trolley; it also includes a dust removal fan located at the rear side of the drilling and anchoring machine or the anchor trolley and capable of following the drilling and anchoring machine to move along the slideway, and the air inlet of the dust removal fan is fixedly connected to a hard negative pressure dust extraction air cylinder, and the other end of the negative pressure dust extraction air cylinder extends to the air outlet of the soft air cylinder, and the dust suction port of the negative pressure dust extraction air cylinder and the air outlet of the soft air cylinder are arranged relative to each other in space to form a front pressure and rear suction form; The dust generated during the production process of the anchoring and digging machine is first moved to the rear of the anchoring and digging machine or the anchor trolley, and then the dust is treated by a high-power dust removal fan that moves along the slideway with the anchoring and digging machine. The dust generated during the production process of the anchoring and digging machine is first collected by a dust extraction fan located on the body of the anchoring and digging machine and provided with a dust extraction fan, and then moved to the rear side of the anchoring and digging machine or the anchor trolley through a soft fan provided at the air outlet of the dust extraction fan, and then sucked into the dust removal fan through a hard negative pressure dust extraction fan connected to the dust suction port of the dust removal fan for airflow purification; The dust removal air volume Q3 of the dust removal fan> the air supply volume Q1 of the excavation face> the suction volume Q2 of the dust extraction fan, so that the dust discharged from the soft air duct can be completely sucked into the dust suction port of the dust removal fan.

2. The method for controlling dust removal at the excavation working face of an integrated excavator and anchoring machine according to claim 1, characterized in that: The dust removal fan is arranged on the secondary runner or slideway.

3. The method for controlling dust removal at the excavation working face of an integrated excavator and anchoring machine according to claim 1, characterized in that: The length of the negative pressure dust extraction fan is ≥20m.

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