CN212673794U

CN212673794U - Dewatering device of coal mine underground coal sliding system

Info

Publication number: CN212673794U
Application number: CN202021257876.1U
Authority: CN
Inventors: 周志军; 李志�
Original assignee: Jiangsu Saite Mining Engineering Technology Co ltd
Current assignee: Jiangsu Saite Mining Engineering Technology Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-03-09
Anticipated expiration: 2030-06-30

Abstract

The utility model discloses a coal mine underground coal sliding system dehydration device, which comprises a first dehydration part and a second dehydration part; the first dewatering part comprises a deep dewatering screen, and the deep dewatering screen comprises an upper screen surface and a lower screen surface; the second dehydration part comprises a coal slime pool and a high-frequency sieve, a stirring mechanism and a coal slime pumping mechanism are arranged in the coal slime pool, and the output end of the coal slime pump is connected with the feeding end of the high-frequency sieve through a pipeline. The dehydration device of the coal mine underground coal sliding system adopts a horizontal arrangement mode to arrange a first dehydration part and a second dehydration part, so that the arrangement space of original equipment under a coal mine can not be changed; the two-stage dehydration can realize that the dehydration of raw coal can reach more than 95 percent, finally realize that coal particles with the particle size of more than 0.2mm enter a raw coal bin of a coal slipping system, and coal particles with the particle size of less than 0.2mm and water enter a drainage system, thereby greatly reducing the loss amount of peat, and being particularly suitable for the coal slipping system of a coal mine with large water bearing formation amount.

Description

Dewatering device of coal mine underground coal sliding system

Technical Field

The utility model relates to a dewatering device specifically is a dewatering device who is applicable to and carries out dehydration to big colliery underground raw coal swift current coal system of aquifer water yield belongs to colliery underground raw coal and handles technical field.

Background

At present, coal transportation equipment for various large and medium-sized coal mines at home and abroad mainly comprises a belt conveyor and a locomotive traction mine car, and the two types of equipment determine two different transportation modes of underground mine transportation. The transportation mode of the belt conveyor has the advantages of large transportation capacity, long transportation distance, no damage to particles, easiness in maintenance and management and the like, and is widely applied to underground raw coal transportation of coal mines.

The coal slipping system for transporting the raw coal in the underground coal mine generally comprises a crusher, a multistage belt conveyor and a raw coal bunker, the raw coal cut by the coal mining machine is crushed to a set granularity by the crusher, then is conveyed by the multistage belt conveyor to enter the raw coal bunker for temporary storage, and then is conveyed to the upper well by the upper belt conveyor by opening a gate of the raw coal bunker.

Aiming at coal mines with large water-bearing layer occurrence water volume, roof water, fissure water, goaf water and coal seam self water are caused to flow into coal chute systems of raw coal in a large quantity due to mining influence in the process of raw coal mining, gangue in the raw coal has the characteristic of being slimed when meeting water, when the water content of the raw coal is more than about 20%, a coal-water mixture is two-phase fluid in a viscous state and is commonly called as 'water coal', and the occurrence of the water coal can often cause the following adverse conditions: (1) if the inclination angle of the upper belt conveyor is large, raw coal with large water content slips to cause difficult upper conveying; (2) because the water content in coal is large and the phenomenon of mud is increased, the gate is very difficult to control when being opened to discharge the coal, so that the coal is easy to break, and if the volume of the coal is large, a large amount of water coal mud can flow out and even bury equipment and personnel; (3) the problem that the water and coal slime enters the underground drainage system causes difficult drainage, damaged drainage equipment, difficult surface water treatment and the like.

Adopt the vibration classification dewatering screen to carry out earlier coal water separation, rethread multistage belt conveyor to get into the raw coal storehouse and keep in after the breakage usually among the prior art to the big raw coal of water content, however there is the deviation in the prediction water inflow of mine when the design often with the actual water inflow of actual coal mining in-process, and this often leads to the fact: on one hand, the underground space of the coal mine is limited, a large dewatering screen cannot be additionally arranged in the original equipment arrangement space of the underground coal mine, and the original equipment arrangement space is generally required to be changed; on the other hand, the impact of the water coal on the sieve plate can not be accurately estimated, which often causes poor adaptability of the vibrating screen to mine production condition changes and large maintenance amount, thereby causing the problems that the coal-water separation treatment effect is not ideal and a large amount of peat loss still exists.

Disclosure of Invention

The problem to above-mentioned prior art exists, the utility model provides a colliery is swift current coal system dewatering device in pit, occupation space is little, can realize better coal water separating effect under the prerequisite that does not change the colliery in the pit former equipment arrangement space, simultaneously can greatly reduced peat run-off, the swift current coal system of the big colliery mine of specially adapted aquifer water yield.

In order to achieve the purpose, the dehydration device of the coal mine underground coal sliding system comprises a first dehydration part and a second dehydration part;

the first-pass dehydration part comprises a deep dehydration sieve, the deep dehydration sieve is arranged at the lap joint between the multi-stage belt conveyors or at the lap joint between the final-stage belt conveyor positioned above the bin opening at the top end of the raw coal bin and the bin opening of the raw coal bin, the feeding end of the deep dehydration sieve is arranged corresponding to the discharging end of the belt conveyor, and the deep dehydration sieve comprises an upper-layer sieve surface and a lower-layer sieve surface; the upper-layer screen surface is of a sliding rod screen surface structure comprising a plurality of sliding rods which are uniformly distributed at intervals; the lower-layer screen surface is arranged below the upper-layer screen surface and is a roller crossed screen structure which comprises a plurality of uniformly distributed and spaced roller shafts arranged in parallel and screen pieces arranged on the roller shafts, the roller shafts are driven to rotate by a roller shaft driving motor and a gearbox, and a water collecting funnel is also arranged below the lower-layer screen surface;

the second dehydration part comprises a coal mud pool and a high-frequency screen; the entry end in coal slime pond is connected with the exit end intercommunication of funnel that catchments, be equipped with rabbling mechanism and coal slime pump pressure mechanism in the coal slime pond, the rabbling mechanism includes stirring drive part and the puddler of being connected with stirring drive part, coal slime pump pressure mechanism is including the coal slime water pump that has pump pressure drive part, the output of coal slime water pump passes through the pipeline and is connected with the pan feeding end of the high frequency sieve that has high frequency vibration driving motor, the discharge end of high frequency sieve is located the bin mouth top in raw coal storehouse, the sifter below of high frequency sieve is equipped with the drainage funnel of being connected with the escape canal.

As a further improvement of the utility model, the bottom of the deep dewatering screen is provided with a telescopic sliding structure which can be locked.

As a further improvement of the utility model, the feeding end of the high-frequency sieve is provided with a water distributor.

As a further improvement of the utility model, the inlet end of the water distributor is provided with a flow regulating valve.

As a further improvement scheme of the utility model, an electronic liquid level meter is arranged in the coal slime pool; the coal mine underground coal sliding system dehydration device further comprises a centralized electric control part, wherein the centralized electric control part comprises a controller, a first dehydration control loop and a second dehydration control loop, and the controller is respectively electrically connected with a roller shaft driving motor of the deep dehydration sieve, an electronic liquid level meter of the coal slime pool, a stirring driving part of the stirring mechanism, a pumping driving part of the coal slime pumping mechanism and a high-frequency vibration driving motor of the high-frequency sieve.

As a further improvement of the utility model, the controller is a PLC controller.

As a further improvement of the utility model, the upper screen surface and the lower screen surface are respectively installed on the machine body of the deep dewatering screen through the angle positioning adjusting mechanism.

As a further improvement of the utility model, the inclination angle control range of the upper screen surface is 30 ~ 60, and the inclination angle control range of the lower screen surface is 10 ~ 20.

As a further improvement of the utility model, a mud cleaning plate is arranged below the sieve sheet of the lower-layer sieve surface.

As an embodiment of the utility model, clearance between the litter of upper screen face is for being not more than 90mm, and the interval between two adjacent epaxial sieve pieces of roller of lower floor's screen face and the axial interval between the epaxial sieve piece of same root roller are not more than 3mm, and the screen face sieve mesh of high frequency sieve sets up to be not less than 0.2 mm.

Compared with the prior art, the dehydration device of the coal mine underground coal sliding system can adopt a horizontal arrangement mode to arrange a first dehydration part and a second dehydration part, thereby realizing that the arrangement space of the original equipment under the coal mine is not changed; two-stage dehydration can be realized through the first dehydration part and the second dehydration part, raw coal dehydration can reach more than 95%, finally coal particles with the particle size of more than 0.2mm enter a raw coal bin of a coal slipping system, coal particles with the particle size of less than 0.2mm and water enter a drainage system, the loss amount of peat can be greatly reduced, and the coal slipping system is particularly suitable for coal mines with large water-bearing stratum occurrence water.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. the deep dewatering screen comprises a deep dewatering screen 11, an upper screen surface 12, a lower screen surface 2, a coal slime pool 21, a stirring mechanism 22, a coal slime pumping mechanism 3, a high-frequency screen 31, a water distributor 4 and a raw coal bunker.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The dehydration device of the coal mine underground coal sliding system comprises a first dehydration part and a second dehydration part.

The first-pass dehydration part comprises a deep dehydration sieve 1, the deep dehydration sieve 1 is arranged at the lap joint between multi-stage belt conveyors or at the lap joint between a last-stage belt conveyor positioned above a bin opening at the top end of a raw coal bin 4 and a bin opening of the raw coal bin 4, and a feeding end of the deep dehydration sieve 1 is arranged corresponding to a discharging end of the belt conveyor, as shown in figure 1, the deep dehydration sieve 1 is arranged at the lap joint between the last-stage belt conveyor positioned above the bin opening at the top end of the raw coal bin 4 and the bin opening of the raw coal bin 4, and the deep dehydration sieve 1 comprises an upper-layer sieve surface 11 and a lower-layer sieve surface 12; the upper screen surface 11 is installed on the machine body of the deep dewatering screen 1 through an angle positioning adjusting mechanism, the angle positioning adjusting mechanism can be a positioning pin and positioning hole structure which is arranged in a matching way, and also can be other angle positioning adjusting structures such as a positioning block and a positioning clamping groove structure which are arranged in a matching way, the inclination angle of the upper screen surface 11 can be adjusted within the range of 30-60 degrees according to the viscosity and the particle size of materials, so that raw coal can pass through smoothly, the upper screen surface 11 is a sliding rod screen surface structure which comprises a plurality of sliding rods which are uniformly distributed and arranged at intervals, the sliding rods are made of high-strength wear-resistant steel, the sliding rods are impact-resistant and have strong wear resistance, the phenomena of bending and fracture cannot occur, the gap between the sliding rods is not more than 90mm, the oversize materials of the coal blocks, the waste rocks and the like with the diameter of more than 90mm can directly fall into the raw coal bunker 4 through the bunker opening of the raw coal bunker 4, the, Water and the like fall onto the lower screen surface 12 from the gap between the slide rods; lower floor's sifter 12 sets up the below at upper screen surface 11, lower floor's sifter 12 passes through angle positioning adjustment mechanism and installs on the organism of degree of depth dewatering sieve 1, the inclination of lower floor's sifter 12 can be according to the viscosity of material, the adjustment of granule argillization degree at 10 ~ 20 within ranges, lower floor's sifter 12 is including many equipartition intervals, parallel arrangement's roller and the roller cross sieve structure of installing the sieve piece on the roller, the roller is the preparation of high rigidity steel, impact resistance is strong, bending phenomenon can not appear, the roller passes through roller driving motor and gearbox drive rotation, interval between the sieve piece on two adjacent rollers, and the axial interval between the sieve piece on same roller is no more than 3mm, and sieve piece below is equipped with the mud cleaning board, guarantee granule below 3mm, the coal slime, hydroenergy is enough smoothly fallen, the below of lower floor's sifter 12 still is equipped with the collection funnel.

The second dehydration part comprises a coal slime pool 2 and a high-frequency screen 3; the entry end of coal slime pond 2 is connected with the exit end intercommunication of catchment funnel, be equipped with rabbling mechanism 21 and coal slime pump-pressing mechanism 22 in the coal slime pond 2, rabbling mechanism 21 includes stirring drive part and the puddler of being connected with stirring drive part, stirring drive part can be the motor structure, also can be hydraulic motor structure isotructure, coal slime pump-pressing mechanism 22 is including the coal slime water pump that has pumping drive part, pumping drive part can be the motor structure, also can be hydraulic motor structure isotructure, the output of coal slime water pump is connected through pipeline and the pan feeding end of the high frequency sieve 3 that has high frequency vibration driving motor, the discharge end of high frequency sieve 3 is located the bin mouth top of raw coal storehouse 4, the screen face sieve mesh of high frequency sieve 3 sets up to be not less than 0.2mm, the screen face below of high frequency sieve 3 is equipped with the drainage funnel of being connected with the escape canal.

Taking the case that the dewatering device of the coal mine underground coal sliding system is arranged at the lap joint of a final-stage belt conveyor positioned above a bin opening at the top end of a raw coal bin 4 and a bin opening of the raw coal bin 4, water coal conveyed by the final-stage belt conveyor falls onto an upper-layer screen surface 11 of a deep dewatering screen 1, oversize products of the upper-layer screen surface 11 such as coal blocks and waste rocks with the diameters larger than 90mm can directly fall into the raw coal bin 4 through the bin opening of the raw coal bin 4, gaps among self-sliding rods such as the coal blocks, the waste rocks and water with the diameters smaller than 90mm fall onto a lower-layer screen surface 12, oversize products of the lower-layer screen surface 12 such as the coal blocks and the waste rocks with the diameters of 3-90 mm can directly fall into the raw coal bin 4 through the bin opening of the raw coal bin under the stirring of a screen sheet, and undersize products of the lower-layer screen surface 12 such as the coal blocks, the waste rocks and the water and the like with the diameters smaller than 3mm enter a coal; when the coal slime in the coal slime pond 2 is accumulated to a certain amount, the stirring mechanism 21 is started to uniformly stir the coal slime in the coal slime pond 2, the coal slime pumping mechanism 22 is started again, the coal slime water in the coal slime pond 2 is pumped into the feeding end of the high-frequency sieve 3, oversize materials of the high-frequency sieve 3 with the diameter of more than 0.2mm can directly fall into the raw coal bunker 4 through the bin mouth of the raw coal bunker 4 under the high-frequency vibration effect, undersize materials of the high-frequency sieve 3 with the diameter of less than 0.2mm enter the drainage ditch through the drainage funnel, and therefore the loss of the peat is greatly reduced.

Because the overlap joint of degree of depth dewatering screen 1 setting between multistage belt conveyor, perhaps set up the overlap joint of the last stage belt conveyor who is located 4 top mouths in the former coal bunker and 4 mouths in the former coal bunker in the storehouse top, consequently maintain inconveniently, for the sake of convenience maintain, as the utility model discloses a further improvement scheme, the bottom of degree of depth dewatering screen 1 is equipped with the flexible sliding structure that can the locking, and flexible sliding structure can be the direction slide rail and the gyro wheel structure that the cooperation set up, also can be the direction spout and the guide block structure isotructure that the cooperation set up, when needing to overhaul or change spare part, can shift out the whole direction translation along perpendicular to direction of delivery of degree of depth dewatering screen 1.

In order to make coal slime evenly distributed on the sifter of high frequency sieve 3, as the utility model discloses a further improvement scheme, the pan feeding of high frequency sieve 3 is served and is equipped with water-locator 31.

In order to avoid high frequency sieve 3 the screen surface phenomenon of running water on can not appearing in the course of the work, as the utility model discloses a further improvement scheme, the entry end of water-locator 31 is equipped with flow control valve, realizes adjusting the coal slime flow of pump income water-locator 31 through adjusting flow control valve to avoid high frequency sieve 3 the screen surface phenomenon of running water on can not appearing in the course of the work.

In order to realize automatic operation, as a further improvement scheme of the utility model, an electronic liquid level meter is arranged in the coal slime pool 2; the coal mine underground coal sliding system dehydration device further comprises a centralized electric control part, wherein the centralized electric control part comprises a controller, a first dehydration control loop and a second dehydration control loop, and the controller is respectively electrically connected with a roller shaft driving motor of the deep dehydration sieve 1, an electronic liquid level meter of the coal slime pool 2, a stirring driving part of the stirring mechanism 21, a pumping pressure driving part of the coal slime pumping mechanism 22 and a high-frequency vibration driving motor of the high-frequency sieve 3. The controller can control the deep dewatering screen 1 to work firstly through the first dewatering control loop, when the electronic liquid level meter feeds back the coal slime accumulated in the coal slime pool 2 to a certain amount, the controller firstly controls the starting stirring mechanism 21 to uniformly stir the coal slime in the coal slime pool 2, controls the starting coal slime pumping mechanism 22 after the set time, and finally controls the starting high-frequency screen 3 to realize automatic operation.

Claims

1. A coal mine underground coal sliding system dehydration device is characterized by comprising a first dehydration part and a second dehydration part;

the first-pass dehydration part comprises a deep dehydration sieve (1), the deep dehydration sieve (1) is arranged at the lap joint between multi-stage belt conveyors or at the lap joint between a final-stage belt conveyor positioned above a top bin mouth of a raw coal bin (4) and a bin mouth of the raw coal bin (4), a feeding end of the deep dehydration sieve (1) is arranged corresponding to a discharging end of the belt conveyor, and the deep dehydration sieve (1) comprises an upper-layer sieve surface (11) and a lower-layer sieve surface (12); the upper layer screen surface (11) is a sliding rod screen surface structure comprising a plurality of sliding rods which are uniformly distributed at intervals; the lower-layer screen surface (12) is arranged below the upper-layer screen surface (11), the lower-layer screen surface (12) is a roller crossed screen structure which comprises a plurality of uniformly-distributed and parallel roller shafts and screen pieces arranged on the roller shafts, the roller shafts are driven to rotate through a roller shaft driving motor and a gearbox, and a water collecting funnel is further arranged below the lower-layer screen surface (12);

the second dehydration part comprises a coal slime pool (2) and a high-frequency screen (3); the entry end and the exit end intercommunication of catchment funnel of coal slime pond (2) are connected, be equipped with rabbling mechanism (21) and coal slime pump pressure mechanism (22) in coal slime pond (2), rabbling mechanism (21) including stirring drive part and the puddler of being connected with stirring drive part, coal slime pump pressure mechanism (22) are including the coal slime water pump that has pump pressure drive part, the output of coal slime water pump passes through the pipeline and is connected with the pan feeding end that has high frequency vibration driving motor's high frequency sieve (3), the discharge end of high frequency sieve (3) is located the bin mouth top in raw coal storehouse (4), the sifter face below of high frequency sieve (3) is equipped with the drainage funnel of being connected with the escape canal.

2. The coal mine underground coal sliding system dehydration device according to claim 1, characterized in that the bottom of the deep dehydration screen (1) is provided with a locking telescopic sliding structure.

3. The coal mine underground coal sliding system dewatering device according to claim 1, characterized in that a water distributor (31) is arranged on the feeding end of the high-frequency screen (3).

4. The coal mine underground coal sliding system dewatering device according to claim 3, characterized in that the inlet end of the water distributor (31) is provided with a flow regulating valve.

5. The coal mine underground coal sliding system dewatering device according to any one of claims 1 to 4, characterized in that an electronic liquid level meter is arranged in the coal mud pool (2); the coal mine underground coal sliding system dehydration device further comprises a centralized electric control part, wherein the centralized electric control part comprises a controller, a first dehydration control loop and a second dehydration control loop, and the controller is electrically connected with a roller shaft driving motor of the deep dehydration sieve (1), an electronic liquid level meter of the coal slime pool (2), a stirring driving part of the stirring mechanism (21), a pumping pressure driving part of the coal slime pumping mechanism (22) and a high-frequency vibration driving motor of the high-frequency sieve (3) respectively.

6. The coal mine downhole coal slip system dewatering device of claim 5, wherein the controller is a PLC controller.

7. The coal mine underground coal sliding system dewatering device according to any one of claims 1 to 4, characterized in that the upper screen surface (11) and the lower screen surface (12) are respectively mounted on the body of the deep dewatering screen (1) through an angle positioning adjusting mechanism.

8. The coal mine underground coal sliding system dewatering device according to claim 7, wherein the inclination angle of the upper screen surface (11) is adjusted within a range of 30-60 degrees, and the inclination angle of the lower screen surface (12) is adjusted within a range of 10-20 degrees.

9. The coal mine underground coal sliding system dewatering device according to any one of claims 1 to 4, characterized in that a mud cleaning plate is arranged below the screen pieces of the lower screen surface (12).

10. The coal mine underground coal sliding system dewatering device according to any one of claims 1 to 4, characterized in that the gap between the slide rods of the upper screen surface (11) is not more than 90mm, the space between the screen pieces on two adjacent rollers of the lower screen surface (12) and the axial space between the screen pieces on the same roller are not more than 3mm, and the screen surface mesh of the high frequency screen (3) is set to be not less than 0.2 mm.