RU2623399C1 - Integrated drilling unit for drilling with water drainage for anchor soles production - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: device comprises a cylinder (7) of the charge air, the engine (8), the lever (9), the control knob (11), torque and the muffler (12). The front end of the motor (8) is connected with a mechanism (17) of the optimum water circulation via a regulator (11) of torque. The mechanism (17) comprises a water circulation optimal transmission shaft and filtered water circulation pump mounted on the coupling by means of the transmission shaft. The circulation pump comprises a filtered water conduit (3) collecting the rock powder. Filter mesh is installed on one side of the box (3) for collecting the rock powder. Suction and pressure pump is mounted under the filter mesh. Channel of pure water, which communicates with the release of the suction and pressure pump, is mounted on the other side of the box (3) for collecting the rock powder. Hole of external water pipe is installed on site channel inlet for pure water. The front end of the transmission shaft is provided with an internal annular groove, the inner wall of which is provided with inlet openings for clean water. The rear end of the transmission shaft is provided with a cylindrical inner recess, the inner wall of which is provided with waste water-absorbing holes. Suction and pressure pump pumps the slurry into the storm bore and produces sludge in the sludge chamber through the drain hole of absorbing water. The separated water is pumped into the duct for clean water for reuse.

EFFECT: water resource is saved, as well as the rock powder in a storm hole is promptly collected, improving drilling efficiency.

2 cl, 2 dwg

Description

Technical field

The present invention relates to the field of engineering equipment for mining, in particular to an integrated drilling rig for drilling with drainage for the anchor of the bottom of the mine.

State of the art

It is difficult to change the situation in which coal reserves are in the long run the main source of energy in China. As the economy in China is growing rapidly, more and more electricity is required, while the coal industry is constantly developing in the direction of the trend of mechanization and automation. In most coal mines in China, the soles of a mine are severely damaged by buckling in most coal mines due to the properties of the coal-bearing rock, the depth and stress in the geological environment, etc. Thus, mining operations experience negative impacts and the safety of operations in coal mines is compromised. At the same time, hardening the sole is a difficult task.

Anchor bolts are currently the most effective means of hardening the soles of mining and managing them in coal mines in China. Little research has been done on anchor equipment specifically designed for mining soles in coal mines in China at present. Drill rigs for working sole anchors face difficulties in the drilling process, but their key function in securing the working sole is impossible to ignore. The flushing drilling method used with conventional anchor equipment involves the direct injection of high-pressure water from a fixed source of water into a rotating hollow drill rod to squeeze a mixture of sludge and water from the gap between the drill rod and the coal seam (rock formation) . This flushing drilling method has some technical drawbacks when drilling in the bottom of a mine in coal mines: firstly, a mixture of silt and water squeezed out of the gap is sprayed around when the drill rod rotates and cannot be collected, which negatively affects the usual movement of transport equipment and personnel; in addition, the problem of expansion of the bottom of the mine due to softening of the surrounding rocks soaked in water is exacerbated; secondly, conventional drilling methods can lead to tool sticking and blocking of the drilled hole during drilling of the bottom of the mine, and the extraction of the drill bit and the work of cleaning the drilled hole are very difficult in the drilling process; thirdly, when a drilling method with flushing is used for drilling in the bottom of the mine, the hole drilled in the bottom will definitely be filled with a mass of water and rock powder, which will lead to a decrease in the quality of anchor bolting and a decrease in the effectiveness of reinforcement, as well as a large unproductive water consumption ; fourthly, in workings with difficult working conditions or with restrictions on the use of a water source, a conventional water dedusting system may not provide normal operating conditions; thus, coal (rock) dust in the drilled hole enters the mine, causing increased difficulties in suppressing dust in the mine and endangering the health of workers.

Thus, it will be understood by one of ordinary skill in the art that there is a problem to be solved, i.e. how to quickly and effectively perform drilling and hardening of the bottom of the mine with the prevention of unproductive water consumption, timely collection of rock dust obtained during the drilling process to prevent the health of workers from dust from dusting and pumping water in the drilled hole, and also improve the effectiveness of reinforcement.

Disclosure of invention

Technical problem: to overcome the disadvantages of the prior art, the present invention provides an integrated drilling rig for drilling with water drainage for an output sole anchor, which is configured to effectively control the stability of surrounding rocks of an output sole.

Technical scheme: an integrated drilling rig for drainage with a drain for an output sole anchor proposed in the present invention, comprises a charge air cylinder, an engine, a control lever, a torque regulator and a silencer; a supporting connecting device is installed on the charge air cylinder, the front end of the charge air cylinder is connected to the rear end of the engine, the control lever is installed on the connecting part between the charge air cylinder and the engine, the muffler is installed on the outside of the engine, the front end of the engine is connected via a torque regulator to the mechanism optimal circulation of water, which contains a transmission shaft and a filtered water circulation pump, installed at clutch power on the transmission shaft; the filtered water circulation pump contains a rock powder collection box, a filter screen is installed on one side of the rock powder collection box, a pump and discharge pump is installed under the filter screen, a clear water channel communicating with the discharge pump and discharge pump is located on the other side of the box collecting rock powder, and the opening of the external water pipe is located at the inlet of the channel for clean water; an annular inner groove with a plurality of clean water inlets in the inner wall is located at a front end of the transmission shaft, and a cylindrical inner groove with a plurality of wastewater absorbing openings in the inner wall is located at a rear end of the transmission shaft.

The non-return valve is installed at the outlet of the pumping and discharge pump.

Advantageous effect: Due to the technical scheme described above, in the present invention, the wastewater-absorbing openings and clean water inlet openings are located on the transmission shaft, so that the rock powder obtained during the drilling process can be removed by applying clean water under pressure a drilled hole from the inlets for clean water through the drill rod; it is possible to improve drilling efficiency, reduce the temperature of the drill bit and increase the operational resource of the drill bit. Using pumping by a pumping and discharge pump, sludge (a mixture of water and rock powder) in a drilled hole can be pumped into the inner pipe of the drill rod and ultimately diverted through holes absorbing waste water into the sludge cavity; the sludge cavity is divided into two parts by a filter screen, and the sludge entering the sludge cavity is filtered with separation into rock powder and clean water; a suction and discharge pump is installed on the clean water side and pumps clean water into the clean water channel and then into the drill rod through the clean water inlets; in this case, cyclic use of water is realized, unproductive water consumption is prevented and dust removal is ensured. In addition, the method can also be applied in a production where there is no water. Thus, the sludge in the drilled hole is pumped out, the reinforcement efficiency is improved and the construction of the excavation is accelerated. The method provides a positive effect of the flushing drilling method and additionally solves the problem of the normal operation of a hydro-dusting system in a mine where there are difficult working conditions or the use of water is limited. The device has a simple design, reliable in operation and has a wide scope.

Brief Description of the Drawings

In FIG. 1 is a schematic diagram of a construction of the present invention.

In FIG. 2 shows a schematic diagram of the design of an optimal water circulation system.

In the figures:

1 - filter screen;

2 - pumping and discharge pump;

3 - a box for collecting rock powder;

4 - hole absorbing wastewater;

5 - inlet for clean water;

6 - transmission shaft;

7 - cylinder charge air;

8 - engine;

9 - control lever;

10 - supporting connecting device;

11 - torque control;

12 - a muffler;

13 - hole of the external water pipe;

14 - check valve;

15 - channel for clean water;

16 - sludge cavity;

17 - the mechanism of optimal circulation of water.

Disclosure of invention

One example of the present invention is further described below with reference to the accompanying drawings.

The integrated water boring drilling rig for the production sole anchor proposed in the present invention mainly comprises a charge air cylinder 7, an engine 8, a control lever 9, a torque regulator 11, a silencer 12 and an optimal water circulation mechanism 17. The supporting connecting device 10 is mounted on the charge air cylinder 7, the front end of the charge air cylinder 7 is connected to the rear end of the engine 8, the control lever 9 is mounted on the connecting part between the charge air cylinder 7 and the engine 8, the muffler 12 is mounted on the outside of the engine 8, front the end of the motor 8 is connected via a torque regulator 11 to the mechanism of optimal water circulation 17, which contains a transmission shaft 6 and a filtered water circulation pump renewed by means of a clutch on the transmission shaft 6; the filtered water circulation pump contains a rock powder collecting box 3, a filter screen 1 is installed on one side of a rock powder collecting box 3, a pump and discharge pump 2 is installed under the filter screen 1, a clean water channel 15 in communication with the release of the pump and pump 2, is located on the other side of the rock powder collecting box 3, the hole 13 of the external water pipe is located at the inlet of the channel (15) for clean water, and the check valve 14 is installed on the exhaust outlet amplification of the pressure pump 2; an annular inner groove with a plurality of clean water inlets 5 in the inner wall is located at the front end of the transmission shaft 6, and a cylindrical inner groove with a plurality of wastewater-absorbing holes 4 in the inner wall is located at the rear end of the transmission shaft 6. The transmission shaft 6 is connected to the engine 8, the wastewater-absorbing openings 4 and the clean water inlets 5 are located on the transmission shaft 6, respectively, the wastewater-absorbing openings 4 directly from communicate with the slurry cavity 16 of the rock powder collecting box 3, the rock powder collecting box 3 is located at the bottom of the slurry cavity 16, the filter screen 1 is installed on the slurry cavity 16, the pump and discharge pump 2 is installed on the clean water side of the filter screen 1, check valve 14 is installed at the water outlet of the pump and discharge pump 2, the clean water channel 15 is located on the other side of the check valve 14, and the clean water channel 15 is directly connected to the clean water inlets 5.

Principle of work: problems of expanding the soles of different levels exist in mine workings in most coal mines in China. In workings with a large depth of occurrence or with a sole with negative manifestations of lithology, in particular, swelling of the sole and deformation are so pronounced that the workings cannot be properly exploited. The deformation of the working sole and the surrounding rock can be satisfactorily controlled by anchoring the working sole using a drilling rig for the working sole anchor proposed in the present invention. Before use, the drilling rig is connected through a support connecting device 10 to a support, the intermediate hole 13 for the external water pipe is connected to the external water supply pipe, the engine 8 is connected to the air duct, and the front end of the engine 8 is connected to the torque regulator 11, while the rotation speed of the engine 8 can be adjusted appropriately. A two-layer drill rod equipped with a drill bit is directly inserted into the drill rod mounting socket on the front end of the transmission shaft 6; after that, the sole of the mine can be drilled. During the drilling process, the charge air cylinder 7 generates axial force to move the drill rig forward, the engine generates torque to rotate the drill rod and actuate the drill bit, which destroys the rock to drill the hole. During the drilling process, pure water in the channel for clean water enters the peripheral ring of the drill rod through the inlet openings for clean water and reaches the bottom of the drilled well, where it is mixed with the rock powder obtained during the drilling process to form sludge, while the effect of dust removal is obtained; at the same time, the pumping and injection pump is started to pump the sludge through the internal holes of the drill rod into the sludge cavity, the sludge entering the sludge cavity is filtered and separated by a filter net into rock powder and clean water, rock powder directly falls into the rock powder collection box , and the rock powder collecting box can be pulled out and installed at the right time to conveniently pour out the rock powder; pure water is pumped under pressure by a suction and discharge pump into the clean water channel, and cyclical use of water is obtained. A non-return valve is installed at the water outlet of the pump and discharge pump, and the clean water channel is located on the other side of the check valve, so that clean water can only be pumped by the pump and discharge pump into the clean water channel, but the water in the clean water channel cannot flow back to the pump and discharge pump; the channel for clean water directly communicates with the inlets for clean water. With this technique, dust damage can be reduced, and water and rock powder in a drilled well can be cleaned; in this way, drilling efficiency can be improved, construction of the production can be accelerated, rock powder obtained during the drilling process can be removed in a timely manner and jamming of the drill bit can be prevented. In some special workings with limited use of water, a flushing drilling method cannot be applied, and a drilling method without flushing can create many difficulties during drilling in the sole; moreover, fast drilling becomes impossible, but in such cases the advantages of an integrated drilling rig for drilling with the drainage for the anchor soles of the development proposed in the present invention, become more significant.

Claims (16)

1. An integrated drilling rig for drainage with a drain for an output sole anchor, comprising a charge air cylinder (7), an engine (8), a control lever (9), a torque regulator (11) and a silencer (12), in which: a supporting connecting device (10) is mounted on the cylinder (7) of charge air, the front end of the charge air cylinder (7) is connected to the rear end of the engine (8), the control lever (9) is mounted on the connecting part between the cylinder (7) of charge air and the engine (8), a muffler (12) is installed on the outside of the engine (8), the front end of the engine (8) is connected via a torque regulator (11) to the optimal water circulation mechanism (17), which contains a transmission shaft (6) and a filtered water circulation pump mounted by means of a coupling on the transmission shaft (6); moreover filtered water circulation pump contains a rock powder collecting box (3), filter mesh (1) is installed on one side of the duct (3) collecting rock powder, an exhaust and discharge pump (2) is installed under the filter screen (1), a channel (15) for clean water, in communication with the release of the pumping and discharge pump (2), is located on the other side of the box (3) collecting rock powder, and the hole (13) of the external water pipe is located at the inlet of the channel (15) for clean water; an annular inner groove with a plurality of clean water inlets (5) in the inner wall is located at the front end of the transmission shaft (6), and a cylindrical inner groove with a plurality of wastewater absorbing holes (4) in the inner wall is located at the rear end of the transmission shaft (6). 2. An integrated drilling rig for drilling with drainage for an anchor of the bottom of the mine according to claim 1, in which: a non-return valve (14) is installed on the outlet of the pumping and discharge pump (2).

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