WO2019144663A1

WO2019144663A1 - Mining drill carriage and drilling and dust removal integrated device thereof

Info

Publication number: WO2019144663A1
Application number: PCT/CN2018/112282
Authority: WO
Inventors: 杨威; 林柏泉; 路长征; 宋浩然; 林明华; 贾茹
Original assignee: 中国矿业大学; 徐州博安科技发展有限责任公司
Priority date: 2018-01-25
Filing date: 2018-10-29
Publication date: 2019-08-01
Also published as: CN108561077A

Abstract

A drilling and dust removal integrated device of a mining drill carriage, comprising: a drill pipe (2); a drill carriage motor (1) rotated to drive the drill pipe to drill; a dust hood (10) provided corresponding to the drill pipe; a cyclone dust collector (20) with an air inlet connected to the dust hood by means of a dust-removing duct (40); and an exhaust fan (30) with an exhaust opening connected to an air outlet of the cyclone dust collector by means of the dust-removing duct (40). The exhaust fan is in power connection with the drill carriage motor by means of a transmission mechanism (50), and the drill carriage motor rotates to drive the exhaust fan to operate, so that the dust-containing air generated by means of the drilling of the drill pipe at the dust hood is pumped into the cyclone dust collector to remove dust, and the dust-removed air is pumped to the exhaust fan so as to be discharged from an air outlet of the exhaust fan. The device can ensure the dust removal effect and simplify the structure of the mining drill carriage, so as to improve the flexibility and utilization convenience of the mining drill carriage. Also disclosed is a mining drill carriage comprising the device.

Description

Mining rig and its drilling and dust removal integrated device

Technical field

The invention relates to the technical field of mining equipment, in particular to a drilling and dust removing integrated device for a mining drill car and a mining drilling vehicle.

Background technique

When the wind-driven dry drilling operation is carried out in the mining area, a large amount of dust will flow into the working space. This will not only have a great impact on the health of workers, but also accelerate the wear and tear of mechanical devices. What is more serious is that some of the coal dust in the mine dust is also explosive and explosive, which will bring great security threats to the drilling operation.

According to the provisions of Article 651 of the “Safety Regulations for Coal Mines” (2016 Edition), dry drilling (eye) is required for drilling, and measures such as dust removal by dust collectors are adopted. At present, the air-driven dry dust removal device on the market generally needs to introduce external power during dust removal, for example, using an additional motor to provide dust removal power. The explosion-proof requirements of underground coal mines usually lead to a relatively large volume of drilling equipment. After the external power of the dust removal device is introduced, the volume of the drilling equipment is further increased, which results in the inability of the drilling equipment to move flexibly and is extremely inconvenient to operate.

Summary of the invention

The present invention aims to solve at least one of the technical problems in the above-mentioned techniques to some extent. To this end, an object of the present invention is to provide an integrated drilling and dust removing device for a mining rig, which not only ensures the dust removing effect, but also simplifies the structure of the mining rig, thereby improving the flexibility of the mining boring machine. Easy to use.

A second object of the present invention is to provide a mining rig.

In order to achieve the above object, a drilling and dust removing integrated device for a mining rig according to a first aspect of the present invention includes: a drill pipe; a drill motor, the drill motor driving the drill pipe during operation For the drilling work; the dust collecting hood, the dust collecting cover is disposed corresponding to the drill pipe; the cyclone dust collector, the air inlet of the cyclone dust collector is connected to the dust collecting cover through a dust removing duct; The suction port of the exhaust fan is connected to the air outlet of the cyclone through a dust removal duct, and the exhaust fan is electrically connected to the drill motor through a transmission mechanism, wherein the drill motor drives the motor during operation The exhaust fan is operated to extract dust-containing air generated by drilling the drill rod at the dust collecting hood into the cyclone dust collector for dust removal, and pump the dust-removed air to the exhaust fan to pass The exhaust vent of the exhaust fan is discharged.

According to the embodiment of the present invention, a drilling and dust removing integrated device for a mining rig is provided with a dust collecting hood, a cyclone dust collector and a suction fan which are sequentially connected, and drives the exhaust fan by using a drilling motor driven by the drill pipe. The dust-laden air generated by drilling the drill rod at the dust collecting hood is pumped to the cyclone dust collector for dust removal, thereby not only ensuring the dust removing effect, optimizing the working environment of the drilling work, and improving the safety of the drilling work. It also simplifies the structure of the mining rig, thereby increasing the flexibility and ease of use of the mining machine.

In addition, the drilling and dust removing integrated device for the mining rig according to the above embodiment of the present invention may further have the following additional technical features:

Further, the drilling and dust removing integrated device of the mining rig includes: a gearbox, wherein an input shaft of the gearbox is dynamically connected to the rig motor through a transmission mechanism, and an output shaft of the gearbox A power connection is made to the exhaust fan, and the gearbox is used to adjust the rotational speed of the exhaust fan.

Further, the drilling and dust removing integrated device of the mining rig includes: a dust removing filter screen, the dust removing filter net is disposed at an air exhaust opening of the exhaust fan, and the dust removing filter mesh is used for the opposite The air discharged from the exhaust port of the exhaust fan is filtered.

According to an embodiment of the invention, the cyclone is a plurality of, and the plurality of cyclones are connected in parallel between the dust collecting hood and the exhaust fan.

According to an embodiment of the invention, the transmission mechanism comprises a conveyor belt or a gear.

In order to achieve the above object, a second aspect of the present invention provides a mining rig comprising a drilling and dust removing integrated device for a mining rig according to the first aspect of the present invention.

The mining drill truck according to the embodiment of the invention not only has a dust removing function, but also has a simple structure, high flexibility and convenient use.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

1 is a schematic structural view of a mining rig according to an embodiment of the present invention;

2 is a schematic structural view of a drill motor and an exhaust fan according to an embodiment of the present invention;

3 is a schematic structural view of a drill motor and a gearbox according to an embodiment of the present invention.

Reference mark:

Drilling motor 1, drill pipe 2, track 3,

Dust hood 10, cyclone 20, exhaust fan 30, dust removal duct 40, transmission mechanism 50, dust filter screen 60, gearbox 70,

The wind wheel 31 is a conveyor belt 51.

Detailed ways

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

The mining drill car and the integrated device for drilling and dust removing according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

1 is a schematic structural view of a mining rig according to an embodiment of the present invention.

As shown in FIG. 1 , the drilling and dust removing integrated device of the embodiment of the present invention comprises a drill motor 1 (not shown in FIG. 1 , see FIG. 2 and FIG. 3 ), a drill pipe 2 , a dust collecting cover 10 , and a cyclone dust removal device. The device 20 and the exhaust fan 30. Among them, the drilling motor is an explosion-proof motor, and the drilling motor 1 can drive the drill pipe 2 to drill for drilling work. The mining rig can include a crawler belt 3 that supports the rig body and can drive the rig body to move.

The dust collecting hood 10 is disposed corresponding to the drill pipe 2; the air inlet of the cyclone 20 is connected to the dust collecting hood 10 through the dust removing duct 40; the air vent of the air venting fan 30 passes through the dust removing duct 40 and the air outlet of the cyclone 20 Connected, the exhaust fan 30 is dynamically connected to the drill motor 1 via a transmission mechanism. When the mining rig is started, the rig motor 1 can drive the ventilator 30 to operate, so as to pump the dusty air generated by the drill pipe 2 at the dust collecting hood 10 into the cyclone 20 for dust removal. And the dust-removed air is drawn to the exhaust fan 30 to be discharged through the exhaust port of the exhaust fan 30.

In one embodiment of the invention, the transmission mechanism can include a conveyor belt or gear.

Referring to FIG. 1 and FIG. 2, the working process of the drilling and dust removing integrated device will be described below by taking the transmission mechanism 50 as a conveyor belt 51 as an example. When the mining rig starts and drills into the coal wall, the drilling motor 1 can drive the drill pipe 2 while driving, and the wind wheel 31 in the suction fan 30 can be rotated by the conveyor belt 51, and the wind wheel 31 rotates. The generated negative pressure can provide the cyclone dust 20 with airflow rotational power, and the negative pressure is transmitted to the dust collecting hood 10 to suck the dusty air at the drill hole. When the dusty air enters the cyclone 20, the airflow will change from a linear motion to a circular motion to form a swirling airflow. Most of the swirling airflow spirals down the wall of the cyclone 20 toward the cone of the cyclone 20. The dust-containing gas generates centrifugal force during the rotation process, and the dust particles which are heavier than the gas are deflected toward the wall. Once the dust particles come into contact with the wall, the inertial force is lost and the momentum of the inlet velocity and the downward gravity fall along the surface of the wall to enter the ash discharge pipe of the cyclone 20. The spirally downward swirling airflow approaches the center of the cyclone 20 due to the conical contraction as it reaches the cone. When the rotating airflow reaches a certain position at the lower end of the cone, the same direction of rotation can be from the middle of the cyclone 20, from the bottom to the top, continuing the spiral flow, and entering the exhaust through the air outlet of the cyclone 20. 30, finally discharged through the exhaust vent of the exhaust fan 30.

In other embodiments of the present invention, the exhaust fan 30 can also be powered indirectly by the drill rig, that is, the exhaust fan 30 can be operated by any power source already existing on the mining rig without introducing an additional power source. Thereby achieving the above beneficial effects.

The above-mentioned dust removal process by the cyclone can effectively remove large-diameter dust (for example, coal dust having a diameter of more than 5 μm) in the dust-containing air, and actually includes some small-sized particle-sized respirable dust in the dust-containing air (for example, Dust with a diameter of less than 5 μm). In order to effectively remove the respirable dust, in one embodiment of the present invention, as shown in FIG. 1 and FIG. 2, the drilling and dust removing integrated device may further include a dust filter screen 60, and the dust filter screen 60 may be disposed on the exhaust fan 30. At the exhaust vent, the dust filter 60 can be used to filter the air discharged from the exhaust vent of the blower 30.

Therefore, after the primary purification of the cyclone and the secondary purification of the dust filter, the completely purified air can be discharged, and the dust removal effect is better.

Further, as shown in FIG. 3, the drilling and dust removing integrated device of the mining rig of the embodiment of the present invention may further include a gearbox 70. The input shaft of the gearbox 70 can be dynamically coupled to the drill motor 1 via a transmission mechanism (including, for example, a conveyor belt and a gear, such as the conveyor belt 51 in FIG. 3), and the output shaft of the transmission 70 can be powered by the exhaust fan 30. Connected, the gearbox 70 can be used to adjust the speed of the blower 30. By adjusting the rotational speed of the exhaust fan 30, it is possible to generate negative pressures and suction air volumes of different sizes, thereby facilitating changing the amount of dust removal according to the amount of dust generated by drilling. It should be understood that since the drill motor 1 is used to drive the drill pipe 2 to drill for drilling work, the speed of the drill motor 1 is generally based on the rotational speed requirement or the drilling force requirement of the drill pipe during the drilling operation. It is adjusted and not suitable for adjustment according to the demand of dust removal. In view of this, by providing the transmission 70 having a plurality of gear positions, when the transmission 70 is switched to a different gear position, the rotation speed of the suction fan 30 can be changed, thereby adjusting the amount of dust removal. Thus, by providing the gearbox 70 in the drilling and dust removing integrated device, the drilling and dust removing integrated device for the mining rig according to the embodiment of the present invention can be applied to various occasions.

It should be noted that, in other embodiments of the present invention, the cyclone 20 may be multiple, and the plurality of cyclone 20 are connected in parallel between the dust collecting cover 10 and the exhaust fan 30, that is, each cyclone. The air inlet of the 20 is connected to the dust collecting hood 10 through a dust removing duct, and the air outlet of each cyclone 20 is connected to the air inlet of the exhaust fan 30 through a dust removing duct. Thereby, the dust removing effect can be further improved by the simultaneous operation of the plurality of cyclone 20 .

In order to quickly adapt the mining rig to different application environments, in one embodiment of the present invention, the dust collecting hood 10 can also be connected to the slide of the mining rig through a mobile connecting mechanism. Specifically, the mobile connecting mechanism may include a first rotating disk, a first telescopic rod, a second telescopic rod and a second rotating disc, and the rotating end of the first rotating disc is detachably connected to the sidewall of the dust collecting cover 10; The rod is connected to the fixed end of the first rotating disc by the first bending piece; the second telescopic rod is connected to the first telescopic rod by the second bending part; the rotating end of the second rotating disc is connected with the second telescopic rod, the second The fixed end of the rotating disc is detachably connected to the slide of the mining rig.

Thereby, the dust collecting hood 10 can be moved to adjust the orientation of the dust inlet by the rotation of the first rotating disk; by the extension and contraction of the first telescopic rod, the dust collecting hood 10 and the first rotating disk can be integrally along The first telescopic rod moves in the longitudinal direction; by the extension and contraction of the second telescopic rod, the dust collecting cover 10, the first rotating disc and the first telescopic rod can be moved along the longitudinal direction of the second telescopic rod; The rotation of the second rotating disk allows the dust collecting hood 10, the first rotating disk, the first telescopic rod, and the second telescopic rod to move as a whole. Therefore, the orientation of the dust inlet can be changed according to the application requirements of the mining drill truck, and the shape and the occupied space of the movable dust collecting hood assembly can be changed, so that the mining rig can quickly adapt to different application environments.

In another embodiment of the invention, the dust collecting hood 10 has a special shape and can be worn on the drill pipe 2. Specifically, the dust collecting cover 10 may include a tapered outer cover, a cylindrical outer cover, a tapered inner baffle, a first blocking member, and a second blocking member. Wherein, the top opening of the conical outer cover cooperates with one end opening of the cylindrical outer cover, and the side wall opening of the cylindrical outer cover serves as a dust outlet of the dust collecting cover 10, and the tapered outer cover opens a first notch along the direction of the conical generatrix; The plate is correspondingly disposed in the conical outer cover, and the conical inner baffle opens a second notch at a corresponding position with the first notch, and the conical inner baffle and the conical outer cover are connected by the baffle connecting shaft, and the taper The bottom opening of the inner baffle is smaller than the bottom opening of the conical outer cover, and a first suction opening is formed between the bottom opening of the conical inner baffle and the bottom opening of the conical outer cover, and the side wall of the conical inner baffle is at least a second suction port; the first blocking member cooperates with the other end opening of the cylindrical outer cover, the first sealing member has a first drill rod connection port, and the second sealing member and the top portion of the tapered inner baffle The opening is matched, and the second plug connecting port is opened on the second blocking member. Wherein, the drill pipe of the mining drill car passes through the first drill pipe connection port to pass the dust collecting cover 10 on the drill pipe 2.

When the mining rig is used for drilling work, the internal pressure of the borehole will spray the dust from the hole, and under the influence of the wind flow of the roadway, the dust flows toward the wind direction of the roadway, and the dust collecting hood 10 is arranged under the wind flow. The gap is in the wind, and the dust can be sucked through the first suction port and the second suction port, and passes through a cavity between the tapered inner baffle and the tapered outer cover, a cavity in the cylindrical outer cover, and is discharged from the dust outlet. Can achieve better vacuuming effect. The shape and proportion of the second suction port in the above structure can be designed according to actual application requirements, and a good dust suction effect can be achieved. The first notch and the second notch on the dust collecting cover 10 can cause the massive particles at the drilling hole to be affected by gravity, and naturally fall from the notch, and the operator can observe the dust at the dust collecting cover 10 through the notch. Flow and drilling slag discharge.

Corresponding to the above embodiments, the present invention also proposes a mining rig.

The mining rig of the embodiment of the present invention includes the drilling and dust removing integrated device for the mining rig according to the above embodiment of the present invention, and the specific implementation manner thereof can refer to the above embodiment, in order to avoid redundancy, no longer Narration.

In the description of the present invention, it is to be understood that the meaning of "plurality" is two or more unless otherwise specifically defined and defined. The terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral; it may be directly connected or intermediate The medium is indirectly connected, which may be the internal connection of two elements or the interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the present specification, the description of the terms "one embodiment", "some embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment of the present invention. Or in the example. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A drilling and dust removing integrated device for a mining rig, characterized in that it comprises:

Drill pipe

a drilling rig motor that drives the drill rod to drill for drilling during operation;

a dust collecting cover, wherein the dust collecting cover is disposed corresponding to the drill pipe;

a cyclone, the air inlet of the cyclone is connected to the dust collecting hood through a dust removing duct;

An air blower, wherein the air suction port of the air blower is connected to an air outlet of the cyclone through a dust removal duct, and the air blower is electrically connected to the drill motor through a transmission mechanism,

Wherein the drilling motor drives the exhaust fan to operate during operation to draw dust-laden air generated by the drill rod drilling at the dust collecting hood into the cyclone for dust removal, and The dust-removed air is drawn to the exhaust fan to be discharged through the exhaust port of the exhaust fan.
The integrated drilling and dust removal device for a mining rig according to claim 1, further comprising:

a gearbox, the input shaft of the gearbox is dynamically connected to the drill motor via a transmission mechanism, the output shaft of the gearbox is in power connection with the exhaust fan, and the gearbox is used to adjust the exhaust fan Speed.
The integrated drilling and dust removal device for a mining rig according to claim 1 or 2, further comprising:

The dust filter screen is disposed at an air outlet of the air blower, and the dust filter screen is used for filtering air discharged from an air outlet of the air blower.
The integrated drilling and dust removal device for a mining rig according to claim 3, wherein the cyclone is a plurality of, and the plurality of cyclones are connected in parallel to the dust collecting hood and the Between the exhaust fans.
The drilling and dust removing integrated device for a mining rig according to claim 1 or 2, wherein the transmission mechanism comprises a conveyor belt or a gear.
A mining rig comprising a drilling and dust removing integrated device for a mining rig according to any one of claims 1-5.