CN210440082U - Coal mine central sump for on-line continuous dredging - Google Patents

Abstract

The utility model discloses a colliery central sump of online desilting in succession, including the low slope sump of the high one end of two sections at least bottom surface one ends, the low side of slope sump is linked together with the low side of adjacent slope sump, and central water pump house and shaft bottom parking lot alley are connected respectively to the high end of two sections slope sumps at central water sump both ends, are provided with the coal slime thick liquid cold transport tunnel that links to each other with shaft bottom parking lot alley along the low side of each section slope sump, the low side department that the slope sump is connected is provided with the long-pending mud pit, is provided with coal slime thick liquid discharging equipment between long-pending mud pit and the coal slime thick liquid cold transport tunnel, still is provided with storehouse top contact alley intercommunication between the top of slope sump low side and the top of coal slime thick liquid cold transport alley, is provided with online continuous operation's desilting device in slope sump and the storehouse top contact alle. The utility model discloses a continuous miniwatt, high efficiency desilting and coal slurry's high concentration solid attitude transportation even under the not running state of central sump has reduced central sump desilting cost, improves central sump operation security.

Description

Coal mine central sump for on-line continuous dredging

Technical Field

The utility model relates to a coal mine production and safe technical field especially indicate the colliery central sump of online desilting in succession.

Background

The underground central water sump of the coal mine is an indispensable part in a mine drainage system and is a roadway lower than each mining level of the mine. Water gushes from all places of the mine and flows into the central water sump together, and slowly flows to the water pump room through the water sump, in the slow flowing process, solid particles such as coal dust and rock powder carried by the gushing water are clarified and separated from water, clear water is discharged to the ground through the water pump at the outlet of the water sump, the solid particles are precipitated at the bottom of the water sump along the flow, coal slurry is formed, and the coal slurry is finally cleaned and transported to the ground.

The central water sump has certain capacity and can store all mine water gushing within certain time, so that the mine is prevented from flooding under the abnormal conditions of drainage pump failure or sudden increase of the mine water gushing to a certain degree. Because of the influence of mine pressure, the section of the central water sump cannot be too large, the capacity meeting the requirements is generally obtained by changing the length and the number of the central water sumps, at present, more than two central water sumps are generally arranged in parallel, and the length of each central water sump is dozens of meters to hundreds of meters. Along with the long-time operation of central sump, a large amount of coal slime thick liquid siltation not only makes effective volume reduce, increases the risk that the mine was flooded, can lead to the velocity of water to increase moreover, and solid particulate matter is difficult for deposiing and gets into the water pump even, leads to the water pump wearing and tearing to damage even, causes potential safety hazard and economic loss, so the coal slime thick liquid in the central sump must in time be cleared up out of the sump.

At present, the coal slurry in the central water sump is mostly cleaned by alternately stopping the two water sumps, and the water in the water sumps is discharged and then enters the sump to be cleaned manually or mechanically. Manual cleaning is adopted, so that the labor intensity is high, and the working efficiency is low; by adopting mechanical cleaning, the cleaning efficiency is improved, the labor intensity of personnel is reduced, and the shutdown time of the water sump is reduced to a certain extent, but the water sump volume risk caused by water sump siltation and shutdown cannot be solved, and the water sump switching shutdown isolation measures are complex and have certain potential safety hazards.

In recent years, people continuously carry out technological innovation and scientific research and development, make some progress in the aspect of dredging of a central sump without stopping running, and provide some new methods, such as implementing a scraper machine to dive and scrape and discharge coal slime in a short distance of a sump opening; arranging dirt accumulation pits at intervals, and continuously discharging mud by using a submersible mud pump; and a sewage collecting channel submersible pump is arranged to discharge sludge continuously for a long distance. The central sump non-stop dredging modes have respective defects, and the main problems are that underwater equipment is complex and low in reliability, particularly, the concentration of the slurry is required to be controlled in long-distance pipeline solid-liquid two-phase flow transportation, the operation control difficulty is high, the equipment is seriously abraded, the operation and maintenance cost is high, and even the submersible slurry pump can hardly normally operate along with the increase of the length of the pipeline. Therefore, the technical problem of cleaning the underground water sump of the mine is not solved fundamentally, is still a significant restriction factor disturbing the safe production of the mine, and is also an important factor of high production cost of the coal mine.

SUMMERY OF THE UTILITY MODEL

To not enough among the above-mentioned background art, the utility model provides a colliery central water sump of online continuous desilting has solved risk and inconvenience that current central water sump needs desilting after the outage to cause to greatly reduced the collection dredging cost of the coal slurry of siltation in the water sump, improved the whole production efficiency of central water sump.

The technical scheme of the utility model is realized like this: the coal mine central sump for on-line continuous dredging comprises at least two inclined sump sections, wherein one end of the bottom surface of each inclined sump section is higher and the other end of each inclined sump section is lower, a coal slurry cooling transportation roadway is arranged and connected with the inclined sump sections, an emergency sump communication roadway is arranged and connected with the coal slurry cooling transportation roadway, the lower end of each inclined sump section is communicated with the lower end of the adjacent inclined sump section, the higher ends of the two inclined sump sections at the two ends of the central sump section are respectively connected with a central water pump room and a shaft bottom vehicle yard main roadway, the coal slurry cooling transportation roadway connected with the shaft bottom vehicle yard main roadway is arranged along the lower ends of the central sump section, a sludge accumulation pit is arranged at the lower end part connected with the inclined sump sections, a coal slurry discharging device is arranged between the sludge accumulation pit and the coal slurry cooling transportation roadway, a roof communication is arranged between the top of the lower end of the central sump section and the top of the coal slurry cooling transportation roadway, and a.

Furthermore, the dredging device comprises mud pushing jacks arranged in pairs in a bin top connecting roadway, the telescopic ends of the mud pushing jacks are connected with head end steel wire ropes, the head end steel wire ropes are connected with mud pushing devices arranged on the bottom surface of the inclined water sump through head end fixed pulleys, each mud pushing device comprises a framework pipe arranged in the length direction of the inclined water sump, pin sleeves symmetrically arranged in pairs are arranged on two sides of each framework pipe at intervals in the axial direction, rotation stopping clamping plates are arranged on the front sides of the pin sleeves, rotating shafts connected with the mud pushing plates below are inserted into the pin sleeves, the lower end of each framework pipe is connected with one of the mud pushing jacks through the steel wire ropes, a tail end guide pulley is arranged on the front side of the upper end of each framework pipe, the upper end of each framework pipe is connected with a tail end steel wire rope bypassing the tail end guide pulley, and the other end of each tail end steel wire rope is connected with the telescopic end of. The front side is based on the mud pushing device, and the front side inclines towards the upper end along the axial direction of the mud pushing device and is the front side, and the rear side inclines towards the lower end.

Furthermore, the dredging device comprises mud pushing jacks which are arranged in pairs in a bin top connecting roadway, the telescopic ends of the mud pushing jacks are connected with head end steel wire ropes, the head end steel wire ropes are connected with mud pushing devices arranged on the bottom surface of the inclined water bin through head end fixed pulleys, the mud pushing devices are arranged in two groups in parallel, each mud pushing device comprises a framework pipe arranged along the length direction of the inclined water bin, pin sleeves which are symmetrically arranged in pairs are arranged on two sides of each framework pipe at intervals along the axial direction, a rotation stopping clamping plate is arranged on the front side of each pin sleeve, a rotating shaft connected with a mud pushing plate below is inserted into each pin sleeve, a tail end guide pulley is arranged on the front side of the upper end of each framework pipe, the upper ends of the two framework pipes of the two groups of mud pushing devices are connected through tail end steel wire ropes, and the lower ends of the two groups of mud pushing devices are. The front side is based on the mud pushing device, and the front side inclines towards the upper end along the axial direction of the mud pushing device and is the front side, and the rear side inclines towards the lower end.

Further, the diameter of the bottom of the tail end guide pulley groove is equal to the distance between the tail end guide pulley groove and the two framework pipes minus the diameter of the tail end steel wire rope. Furthermore, the pin sleeves are arranged at equal intervals along the length of the framework pipe, the interval distance is greater than the length of the mud pushing plate, the effective stroke of the mud pushing jack is greater than twice of the distance between the upper pin sleeve and the lower pin sleeve, the length of the tail end steel wire rope is greater than the sum of the twice of the distance between the upper pin sleeve and the lower pin sleeve and the diameter of the tail end guide pulley, and the reciprocating distance of the pushing stroke is met.

Furthermore, the mud jack sets up in the connection lane of storehouse top, head end fixed pulley is including setting up the storehouse top guide pulley in the corner of the lateral wall of the connection lane of storehouse top and slope sump, setting up the bottom of the storehouse guide pulley in slope sump low side.

Furthermore, the upper end portion that the pivot passed the pin bushing is provided with the external screw thread, is provided with the nut with the external screw thread phase-match, is provided with the antifriction gasket between nut and the pin bushing, and the top of nut is provided with the tight thin nut of back of the body. Further, the bottom end of the mud pushing plate is higher than the bottom end of the framework pipe.

Furthermore, the cross section of the lower half part of the inclined water sump is in a trapezoid shape with a short bottom edge, an inclined plane with an inclination angle of 45-70 degrees is constructed, coal slurry deposited on the inclined plane can automatically slide down along the inclined plane by means of self weight, a slurry accumulating groove is formed in the bottom surface of the inclined water sump, the coal slurry automatically sliding down is gathered in the slurry accumulating groove, and the slurry pushing device is arranged at the bottom of the slurry accumulating groove and is convenient for cleaning the coal slurry in the slurry accumulating groove.

Furthermore, the inclined water sump comprises a water sump inlet section, a water sump second section, a water sump third section, a water sump fourth section, a water sump fifth section and a water sump outlet section which are connected in sequence in a zigzag manner, wherein the high end of the water sump inlet section is connected with a large roadway of a shaft bottom parking lot, the low end of the water sump inlet section is connected with the low end of the water sump second section, the high end of the water sump second section is connected with the high end of the water sump third section, the low end of the water sump third section is connected with the low end of the water sump fourth section, the high end of the water sump fourth section is connected with the high end of the water sump fifth section, the low end of the water sump fifth section is connected with the low end of the water sump outlet section, and the high end of the water sump outlet section is connected with the central water pump room.

The utility model has the advantages that: the utility model discloses a brand-new design of central sump and desilting device's utility model design, realized the continuous miniwatt low speed desilting of central sump, the high concentration of coal slime thick liquid transportation of solid attitude even, finally realize the storehouse desilting that does not stop of sump, improve central sump operation security, reduce central sump desilting cost simultaneously. Specifically, the central water sump is transversely provided with a rectangular mud accumulation groove with a large-gradient inclined surface, so that coal mud slides by means of self weight and is collected in the mud accumulation groove; the design of a longitudinal small-gradient inclined bottom tunnel of the central water sump changes the storage state and the online transportation condition of the coal slurry, a longitudinally inclined sludge accumulation groove is formed, a multi-point small-thrust sludge pushing device like a polypod is designed and arranged in the groove, and the slow online underwater movement and collection of the coal slurry are realized. The pushing power is a simple and easily controlled large-stroke jack arranged outside the central water bin, so that the control, maintenance and overhaul are convenient; the multistage of central authorities 'sump is turned back and is arranged, not only can carry out convenient effectual collection to the coal slime thick liquid in the department of bending and arrange, makes central authorities' sump can arrange in a flexible way moreover, satisfies the requirement of different water storage capacities and can make equipment part general relatively again, reduces equipment manufacturing and cost of maintenance. In addition, because the central water sump is not required to be stopped for dredging, the dredging time pressure caused by stopping the central water sump is avoided, the coal slurry can be pushed and transported on line at low power and low speed for a long time, and compared with the coal slurry for cleaning the central water sump, which is usually used for cleaning the central water sump, the overall efficiency is greatly improved, and the energy loss is greatly reduced.

The utility model discloses equipment cost is low, operation and maintenance cost are also very low, and the part of working under water is pure mechanical parts, and is simple reliable, and safe life cycle is long and the maintenance is swift, can also make mud pusher functioning speed as low as possible according to coal slime thick liquid deposition dynamic adjustment jack filling speed and pressure during normal operation, and the at utmost reduces mud pushing resistance and reduces power consumption, and the maximum performance energy utilization efficiency also is convenient for realize automatic operation and remote monitoring. The design of the coal slurry cooling and transporting roadway meets the treatment condition after the coal slurry is discharged from the central water sump, so that a small amount of high-concentration coal slurry discharged from the central water sump for many times has enough time and space for standing, air-drying and dewatering. The dehydration concentration and subsequent transportation cost of the high-concentration coal slurry are also greatly reduced, and meanwhile, the coal slurry cooling transportation roadway can be used as an emergency water sump in a special period, so that the safety of the central water sump of the mine is also improved.

Drawings

In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive work.

Fig. 1 is a schematic plan view of the present invention;

FIG. 2 is a cross-sectional view taken along plane F-F of FIG. 1;

FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 1;

FIG. 4 is a view taken along line A of FIG. 3;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 6 is a view taken along line B of FIG. 5;

FIG. 7 is a cross-sectional view taken along plane C-C of FIG. 1;

FIG. 8 is a view taken along line C of FIG. 7;

fig. 9 is a front view of the middle mud-pushing device of the present invention along the axial direction;

fig. 10 is a top view of fig. 9.

In the figure: 1-1, a water sump inlet section; 1-2, a second section of the water sump; 1-3, a third section of the water sump; 1-4, a fourth section of the water sump; 1-5, a fifth section of the water sump; 1-6, a water sump outlet section; 2. a mud accumulation pit; 3. a coal slurry discharge device; 3-1, a pipeline; 3-2, a valve; 4. cooling and transporting the coal slurry into the roadway; 5. a warehouse top connection lane; 6. an emergency sump communication roadway section; 7. a shaft bottom parking lot main roadway; 8. a mud accumulation groove; 9. a mud pushing device; 9-1A, skeleton tube; 9-1B, a mud pushing plate; 9-1C, a rotation stopping snap-gauge; 9-1D, an anti-friction gasket; 9-1E, a nut; 9-1F, tightening the thin nut; 9-1G and pin sleeves; 9-2, a bin bottom guide pulley; 9-3, a guide pulley at the top of the bin; 9-4, a mud jack; 9-5, a tail end guide pulley; 9-6, a semicircular pull ring; 10. a central water pump house.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

Example 1, as shown in fig. 1, a central water sump of a coal mine for on-line continuous dredging includes an inclined water sump connected to a central water pump house 10 and a shaft bottom yard main roadway 7, a coal slurry cold transportation roadway 4 connected to the inclined water sump, a coal slurry discharge device disposed between the coal slurry cold transportation roadway 4 and the inclined water sump, and a dredging device disposed in the inclined water sump and a roof communication roadway. Gushing water in the shaft bottom parking lot roadway 7 is gathered from all places to flow into the inclined sump, coal slime particles in the gushing water are deposited and gathered through the inclined sump, then cleaner water flows to the central water pump room 10, and the central water pump room 10 discharges the cleaner gushing water.

The slope sump includes two sections sumps that the high one end of bottom surface one end is low, and the slope of slope sump is 7, sets up certain slope and can make the sedimentary coal slime oar utilize gravity to form the trend of lapse, reduces the mud pushing resistance of desilting device, reduces the effect of bringing back of going upward the resetting to the coal slime thick liquid of desilting device simultaneously to guarantee the high-efficient low-power consumption mud pushing effect of mud pushing device. The elevation of each high-end roadway bottom of the inclined water sump is lower than the elevation of 7 roadway bottoms of a large roadway of a shaft bottom parking lot so as to ensure that the water sump has a sufficient effective water passing section.

The lower ends of the inclined water bins are communicated with the lower ends of the adjacent inclined water bins, so that the coal slurry gathered in the two sections of the connected inclined water bins has the tendency of sliding downwards towards the lower ends. The high ends of the two sections of inclined water bins at the two ends of the central water bin are respectively connected with the central water pump room 10 and the shaft bottom parking lot roadway 7, so that the smoothness of the water flowing into the central water bin in the shaft bottom parking lot roadway 7 can be ensured, and the impurity amount carried in the water flowing into the central water pump room 10 can be further reduced.

The lower end that the slope sump is connected is provided with amasss pit 2, and the coal slime thick liquid of gathering in the slope sump can be collected to amasss pit 2 under the supplementary promotion of coal slime thick liquid dead weight and mud pusher. And a coal slurry cooling and transporting roadway 4 connected with a shaft bottom parking lot main roadway 7 is arranged and connected with the mud accumulating pit 2. The mud accumulating pit 2 is used for collecting and temporarily storing the coal slurry, the coal slurry can be further concentrated by temporarily storing in the pit, and the coal slurry discharging device 3 leading to the coal slurry cold transportation roadway 4 is arranged at the bottom of the pit. The bottom elevation of the main body section of the coal slurry cold transportation roadway 4 is lower than that of the coal slurry discharging device 3, the two ends of the coal slurry cold transportation roadway 4 are gradually lifted and communicated with the shaft bottom parking lot main roadway 7, and the water inlet end is connected with a water ditch of the shaft bottom parking lot main roadway 7 and is provided with a device for cutting off water flow.

The coal slurry discharging device 3 consists of a section of thick-wall pipeline 3-1 and two series valves 3-2 arranged at the outlet end of the thick-wall pipeline, the valves 3-2 control the discharge of the coal slurry and can safely isolate the inclined water sump and the coal slurry cold transportation roadway 4, so that water bursting is prevented and the maintenance is convenient, and the coal slurry is discharged and conveyed outwards along the pipeline 3-1 by taking the dead weight and the water pressure as power. And waterproof grouting plugging is carried out between the pipeline and the rock wall of the pipe-through hole, so that slurry in the inclined water sump cannot leak into the coal slime slurry cooling and conveying roadway 4 from the outside of the pipe wall.

The central water sump and the sump top connecting roadway 5 are internally provided with dredging devices, each dredging device comprises a mud pushing jack 9-4 which is arranged in the sump top connecting roadway 5 in pairs, the telescopic end of each mud pushing jack 9-4 is connected with a head end steel wire rope, the head end steel wire rope is connected with a mud pushing device 9 arranged on the bottom surface of the inclined water sump through a head end fixed pulley, and the mud pushing device 9 can circularly and repeatedly clean the precipitated coal slurry in the inclined water sump.

As shown in fig. 9 and 10, the mud pushing device 9 comprises a framework pipe 9-1A arranged along the length direction of the inclined sump, semicircular pull rings 9-6 are arranged at both ends of the framework pipe 9-1A, pin sleeves 9-1G symmetrically arranged in pairs are arranged at intervals on both sides of the framework pipe 9-1A along the axial direction, a rotation-stopping snap plate 9-1C is arranged at the front side of the pin sleeve 9-1G, and a rotating shaft connected with a mud pushing plate 9-1B below is inserted into the pin sleeve 9-1G. When the framework pipe 9-1A moves, the mud pushing plate 9-1B can rotate around the pin bush under the resistance of the deposited coal slurry, and the two rotating limit positions are the framework pipe outer wall and the rotation stopping clamping plate respectively. As shown in fig. 4 and 7, the lower end of the framework pipe 9-1A is connected with one of the mud jack 9-4 through a steel wire rope by a semicircular pull ring 9-6, the front side of the upper end of the framework pipe 9-1A is provided with a tail end guide pulley 9-5, the upper end of the framework pipe 9-1A is connected with a tail end steel wire rope which bypasses the tail end guide pulley 9-5 through the semicircular pull ring 9-6, and the other end of the tail end steel wire rope is connected with the telescopic end of the other mud jack 9-4 through a head end fixed pulley. The front side is based on the mud pushing device, and the front side inclines towards the upper end along the axial direction of the mud pushing device and is the front side, and the rear side inclines towards the lower end.

When one mud pushing jack 9-4 moves and contracts, the framework pipe 9-1A is pulled to move downwards along the inclined bottom surface of the inclined water sump to be recorded as a pushing stroke, each mud pushing plate 9-1B rotates to the position of the rotation stopping clamping plate 9-1C under the resistance of coal slime slurry, and at the moment, the mud pushing plates are unfolded to the maximum and do not rotate any more. The mud pushing device 9 continues to slowly push the coal slurry downwards, meanwhile, oil at two ends of a piston of another mud pushing jack 9-4 is balanced, a piston rod is in a free state, and a tail end steel wire rope moves upwards along the inclined bottom surface of the inclined water sump to be recorded as a return stroke. The two mud-pushing jacks 9-4 are operated in a coordinated way to exert force alternately, so that the pushing process and the return process are performed alternately, the mud-pushing plates 9-1B which are symmetrical at two sides are circularly reciprocated like the wings of a pair of birds swinging, the coal slime slurry in the mud-accumulating groove is slowly pushed into the mud-accumulating pit 2, and the mud-pushing plates 9-1B open and push mud and close and reset under the resistance action of the coal slime slurry along with the descending and ascending actions of the mud-pushing device 9, and the operation is circularly reciprocated in such a way, so that the function of continuously pushing mud on line is realized.

Furthermore, the coal slurry cooling and transporting roadway 4 is a narrow high-section roadway passing by the side of the lower end of the inclined water sump, and the elevation of the bottom of the main body section of the roadway is 1 meter lower than that of the coal slurry discharging device 3, so that the coal slurry discharged by the coal slurry discharging device 3 can be smoothly received.

Furthermore, the position of the coal slurry cooling transportation roadway 4 connected with the shaft bottom yard main roadway 7 is as close to the inclined sump inlet as possible, a diversion trench and a corresponding gate plate are arranged, and mine water gushing can be introduced into the coal slurry cooling transportation roadway 4 through the diversion trench by opening the gate plate when necessary; at the other end, a roadway fork is arranged before the coal slurry cold transportation roadway 4 is lifted up to arrange an emergency water sump connecting roadway section 6 leading to the central water pump room 10, so that the coal slurry cold transportation roadway 4 has certain water storage and water passing conditions, and the combination of the coal slurry cold transportation roadway 4 and the emergency water sump connecting roadway section 6 can be used as an emergency water sump. The emergency water sump is not supplied with water at ordinary times and is used for air-drying concentration treatment and discharge transportation of the coal slurry, a seepage groove, a seepage plate and the like for air-drying treatment of the coal slurry can be arranged in the coal slurry cooling transportation roadway 4, and a monorail crane is arranged to serve as a coal slurry conveying and transporting device. When the inclined water sump or the underwater part of the dredging device needs to be maintained, the emergency water sump is used for treating water gushing from the mine.

Mine water enters a central water sump from a large roadway 7 of a shaft bottom parking lot, is precipitated in an inclined water sump along the way, slides into a mud accumulating groove 8 by self weight, then enters a mud accumulating pit 2 by the aid of the self weight and the auxiliary pushing of a mud pushing device 9, then enters a coal slurry cooling and conveying roadway 4 through a coal slurry discharging device 3, and is then air-dried, dehydrated and conveyed to the ground for treatment.

Embodiment 2, coal mine central water sump of online continuous desilting, as shown in fig. 4, the desilting device includes mud jack 9-4 set up in the storehouse top connecting lane 5 in pairs, the flexible end of mud jack 9-4 is connected with head end wire rope, head end wire rope is connected with mud jack 9 set up on the slope water sump bottom surface through head end fixed pulley, mud jack 9 has two sets of in parallel, two sets of mud jack circulation alternate up and down reciprocating motion.

As shown in fig. 5, 6, 9 and 10, the mud pushing device 9 comprises a framework pipe 9-1A arranged along the length direction of the inclined sump, semicircular pull rings 9-6 are arranged at two ends of the framework pipe 9-1A, pin sleeves 9-1G are arranged at intervals in the axial direction at two sides of the framework pipe 9-1A, a rotation stopping snap plate 9-1C is arranged at the front side of each pin sleeve 9-1G, and a rotating shaft connected with a mud pushing plate 9-1B at the lower part is inserted into each pin sleeve 9-1G. When the framework pipe 9-1A moves, the mud pushing plate 9-1B can rotate around the pin bush under the resistance of the deposited coal slurry, and the two rotating limit positions are the framework pipe outer wall and the rotation stopping clamping plate respectively. The front side of the upper end part of the framework pipe 9-1A is provided with a tail end guide pulley 9-5, the semicircular pull rings 9-6 at the upper end parts of the two framework pipes 9-1A of the two groups of mud pushing devices 9 are connected through a tail end steel wire rope, and the semicircular pull rings 9-6 between the lower ends are respectively connected to the telescopic ends of the two mud pushing jacks 9-4 through two head end steel wire ropes. The front side is based on the mud pushing device, and the front side inclines towards the upper end along the axial direction of the mud pushing device and is the front side, and the rear side inclines towards the lower end.

When one mud pushing jack moves and contracts, the framework pipe 9-1A on the corresponding side moves downwards along the inclined bottom surface of the inclined water sump in a pulling mode to be recorded as a pushing range, each mud pushing plate 9-1B rotates to the position of the rotation stopping clamping plate 9-1C under the resistance of the coal slurry, at the moment, the mud pushing plates are unfolded to the maximum and do not rotate any more, and the mud pushing device 9 continues to push the coal slurry downwards slowly. Meanwhile, oil at two ends of a piston of another mud pushing jack 9-4 is balanced, the piston rod is in a free state, the piston rod moves upwards along the inclined bottom surface of the inclined water sump along with the pulling of the corresponding mud pushing device 9 by a tail end steel wire rope to be recorded as a return stroke, each corresponding mud pushing plate 9-1B rotates inwards along a pin sleeve 9-1G under the mud resistance until the corresponding mud pushing plate 9-1B touches a framework pipe 9-1A, and the resistance surface of the corresponding mud pushing plate 9-1B is minimum, so that the mud pushing plate 9-1B is reset with the minimum resistance, the invalid power consumption of circular mud pushing is minimum, and a large amount of coal mud is prevented from being pushed back upwards. The two mud-pushing jacks 9-4 are operated in a coordinated way to exert force alternately, so that the pushing process and the return process are performed alternately, the mud-pushing plates 9-1B which are symmetrical at two sides are circularly reciprocated like the wings of a pair of birds swinging, the coal slime slurry in the mud collection groove is slowly pushed into the mud accumulation pit 2, and the mud-pushing plates 9-1B open and push mud and close and reset under the resistance action of the coal slime slurry along with the descending and ascending actions of the mud-pushing device 9, and the operation is circularly reciprocated in such a way, so that the function of continuously pushing mud on line is realized.

The other structure of this embodiment is the same as embodiment 1.

In the embodiment 3, as shown in fig. 8, in the coal mine central water sump subjected to on-line continuous dredging, the diameter of the bottom of the wheel groove of the tail end guide pulley 9-5 is equal to the distance between the bottom of the wheel groove and the two framework pipes 9-1A minus the diameter of the tail end steel wire rope, so that the mud pushing device 9 cannot move transversely when sliding longitudinally along the inclined bottom surface of the inclined water sump.

The other structure of this embodiment is the same as embodiment 2.

In example 4, as shown in fig. 7 and 8, in the coal mine central water sump subjected to on-line continuous dredging, the pin sleeves 9-1G are equally spaced by 0.3 meter along the length of the framework pipe 9-1A, the distance between the upper and lower adjacent pin sleeves 9-1G is smaller than the effective stroke of the mud jack 9-4, the effective stroke of the mud jack 9-4 is designed to be 1 meter, the length of the tail end steel wire rope is larger than the sum of twice of the distance between the upper and lower adjacent pin sleeves 9-1G and the diameter of the tail end guide pulley 9-5, the example is designed to be 1.3 meters long, the high efficiency of the reciprocating circular motion of the mud jack 9-1B is fully ensured, and the coal mud slurry can be pushed with the maximum effective spreading degree.

The other structure of this embodiment is the same as embodiment 2 or 3.

In embodiment 5, in an on-line continuous desilting coal mine central water sump, as shown in fig. 3, a roof connecting roadway 5 is arranged between the top of the coal slurry cooling roadway 4 and the top of the inclined water sump, and two pairs of mud-pushing jacks 9-4 and related oil pipelines, circuits, monitoring equipment and the like are arranged in each roof connecting roadway 5; the bottom of the horizontal section of the warehouse top connecting roadway 5 is higher than the highest water level of the normal operation of the inclined water warehouse by more than 1 meter, and a waterproof gate is arranged to ensure that water in the inclined water warehouse cannot flow into the coal slurry cold transportation roadway 4.

The head end fixed pulley comprises a bin top guide pulley 9-3 arranged at a corner of the bin top connecting roadway 5 and the side wall of the inclined water bin and a bin bottom guide pulley 9-2 arranged at the lower end of the inclined water bin, so that the tension acting on the framework pipe 9-1A is parallel to the longitudinal center line of the inclined water bin.

The coal slurry cooling and transporting roadway 4 is gradually lifted at two ends, namely the end close to the inlet end of the central water sump and the end close to the connecting roadway 6 of the emergency water sump, and is communicated with the shaft bottom parking lot main roadway 7 to form a ventilation and transportation channel, so that the air drying and transportation of the coal slurry are facilitated.

Any device has a service life and needs to be maintained regularly, and the roadway also needs to be maintained. In case of equipment damage or roadway problems, emergency maintenance is needed, emergency can be carried out by using the coal slurry cooling transportation roadway 4, the coal slurry cooling transportation roadway 4 is required to be communicated with a water channel of a main roadway at a water inlet end of a shaft bottom parking lot main roadway 7 and can be controlled to be opened and closed, an emergency water sump connecting roadway 6 is arranged at a position close to a central water pump room 10, the coal slurry cooling transportation roadway 4 is communicated with the central water pump room 10, and the coal slurry cooling transportation roadway 4 and the emergency water sump connecting roadway 6 jointly form an emergency water sump, so that the emergency water storage and water passing effects are achieved.

The other structure of this embodiment is the same as that of embodiment 1 or 2 or 3 or 4.

In the embodiment 6, as shown in fig. 9 and 10, in the coal mine central sump subjected to on-line continuous dredging, the upper end part of the rotating shaft penetrating through the pin bush 9-1G is provided with an external thread, and a nut 9-1E is arranged to match with the external thread, so that the mud pushing plate 9-1B is prevented from falling off; an anti-friction gasket 9-1D is arranged between the nut 9-1E and the pin sleeve 9-1G to reduce the rotation resistance of the mud pushing plate 9-1B; a back-tightening thin nut 9-1F is arranged above the nut 9-1E to prevent the nut 9-1E from loosening.

The other structures of this embodiment are the same as those of embodiment 1 or 2 or 3 or 4 or 5.

Example 7, in an on-line continuous desilting coal mine central sump, as shown in fig. 9, the bottom end of the mud pushing plate 9-1B is higher than the bottom end of the skeleton pipe 9-1A.

The mud pushing plate 9-1B is hinged in the pin sleeve 9-1G and is suspended and positioned by the nut 9-1E, so that the lowest point of the mud pushing plate 9-1B is 2mm higher than the lowest point of the framework pipe 9-1A, and the upward floating amount is about 5mm relative to the framework pipe 9-1A, a layer of coal slime serous membrane about 2mm is reserved below the mud pushing plate 9-2B in the action process, the friction resistance at the bottom of the groove is reduced, and the upward floating amount can prevent the device from being blocked by bulges or small rock blocks at the bottom of the pit. The distance of each circulation mud pushing is determined by the stroke of the oil cylinder of the mud pushing jack 9-4, and can be conveniently adjusted, and the effective stroke of the mud pushing jack 9-4 is not less than 1 meter in the design of the embodiment.

The other structures of this embodiment are the same as those of embodiment 1 or 2 or 3 or 4 or 5 or 6.

In the embodiment 8, as shown in fig. 2, the cross section of the lower part of the two side walls of the inclined water sump is an isosceles trapezoid with a short bottom edge, the included angle between the waist of the isosceles trapezoid and the horizontal plane is 45-70 degrees, the optimal inclination angle is 60 degrees, and the coal slurry deposited from the inclined water sump can slide down along the slope by self weight. The bottom surface of the inclined water sump is provided with a sludge accumulating groove 8 with the width of 1 meter and the depth of 03-0.5 meter, and the sludge pushing device 9 is arranged at the bottom of the sludge accumulating groove 8, so that the coal slurry can be collected more efficiently.

The other structures of this embodiment are the same as those of embodiment 1 or 2 or 3 or 4 or 5 or 6 or 7.

Example 9, an on-line continuous desilting coal mine central sump, as shown in fig. 1, the inclined sump includes a sump inlet section 1-1, a sump second section 1-2, a sump third section 1-3, a sump fourth section 1-4, a sump fifth section 1-5 and a sump outlet section 1-6 connected in turn in a zigzag shape, a high end of the sump inlet section 1-1 is connected to a shaft bottom yard roadway 7, a low end of the sump inlet section 1-1 is connected to a low end of the sump second section 1-2, a high end of the sump second section 1-2 is connected to a high end of the sump third section 1-3, a low end of the sump third section 1-3 is connected to a low end of the sump fourth section 1-4, a high end of the sump fourth section 1-4 is connected to a high end of the sump fifth section 1-5, a low end of the sump fifth section 1-5 is connected to a low end of the sump outlet section 1-6, the high end of the outlet section 1-6 of the water sump is connected with a central water pump room 10.

The elevation of the high-end roadway bottom of the inclined water sump is about 2-3 meters lower than the elevation of the roadway bottom of a large roadway 7 of a bottom-hole parking lot, the total length of the inclined water sump is 160 meters, the length of each section is 20-30 meters, the inclined water sump is arranged on one side of the large roadway 7 of the bottom-hole parking lot, the section area of the inclined water sump is not lower than 20 square meters, the total water storage capacity can reach 3200 tons, and the safe water storage requirement of the mine water sump with medium water inflow is met.

The other structures of this embodiment are the same as those of embodiment 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8.

The present invention is not exhaustive and is well known to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The coal mine central sump of online continuous desilting, its characterized in that: the underground coal slurry cold transportation system comprises at least two sections of inclined water bins, wherein one end of each section of bottom surface is higher, the other end of each section of bottom surface is lower, the lower ends of the inclined water bins are communicated with the lower ends of adjacent inclined water bins, the high ends of the two sections of inclined water bins at the two ends of the central water bin are respectively connected with a central water pump room (10) and a shaft bottom parking lot roadway (7), a coal slurry cold transportation roadway (4) connected with the shaft bottom parking lot roadway (7) is arranged along the lower ends of the sections of inclined water bins, a sludge accumulation pit (2) is arranged at the lower end part connected with the inclined water bins, a coal slurry discharge device (3) is arranged between the sludge accumulation pit (2) and the coal slurry cold transportation roadway (4), a roof communication roadway (5) is arranged between the top of the lower end of the inclined water bins and the top communication roadway (5), and dredging devices are.

2. The on-line continuous desilting coal mine central sump of claim 1, wherein: the dredging device comprises mud pushing jacks (9-4) which are arranged above the inclined water sump in pairs, the telescopic ends of the mud pushing jacks (9-4) are connected with head end steel wire ropes, the head end steel wire ropes are connected with mud pushing devices (9) which are arranged on the bottom surface of the inclined water sump through head end fixed pulleys, each mud pushing device (9) comprises a framework pipe (9-1A) which is arranged along the length direction of the inclined water sump, pin sleeves (9-1G) which are symmetrically arranged in pairs are arranged on two sides of each framework pipe (9-1A) at intervals along the axial direction, a rotation stopping clamping plate (9-1C) is arranged on the front side of each pin sleeve (9-1G), a rotating shaft which is connected with a mud pushing plate (9-1B) below is inserted into each pin sleeve (9-1G), the lower end part of each framework pipe (9-1A) is connected with one of the mud pushing jacks (9-4) through the steel, the front side of the upper end part of the framework pipe (9-1A) is provided with a tail end guide pulley (9-5), the upper end part of the framework pipe (9-1A) is connected with a tail end steel wire rope which bypasses the tail end guide pulley (9-5), and the other end of the tail end steel wire rope is connected with the telescopic end of another mud jack (9-4) through a head end fixed pulley.

3. The on-line continuous desilting coal mine central sump of claim 1, wherein: the dredging device comprises mud pushing jacks (9-4) which are arranged above the inclined water sump in pairs, the telescopic ends of the mud pushing jacks (9-4) are connected with head end steel wire ropes, the head end steel wire ropes are connected with mud pushing devices (9) which are arranged on the bottom surface of the inclined water sump through head end fixed pulleys, two groups of the mud pushing devices (9) are arranged in parallel, each mud pushing device (9) comprises a framework pipe (9-1A) which is arranged along the length direction of the inclined water sump, pin sleeves (9-1G) which are symmetrically arranged in pairs are arranged on two sides of the framework pipe (9-1A) at intervals along the axial direction, a rotation stopping clamping plate (9-1C) is arranged on the front side of each pin sleeve (9-1G), a rotating shaft which is connected with the mud pushing plate (9-1B) below is inserted into each pin sleeve (9-1G), and a tail end guide pulley (9-5) is arranged on the front side of the upper end part, the upper ends of two framework pipes (9-1A) of the two groups of mud pushing devices (9) are connected through a tail end steel wire rope, and the lower ends of the two framework pipes are respectively connected to the telescopic ends of the two mud pushing jacks (9-4) through two head end steel wire ropes.

4. An on-line continuous desilting coal mine central sump according to claim 3, characterized in that: the diameter of the bottom of the pulley groove of the tail end guide pulley (9-5) is equal to the distance between the two framework pipes (9-1A) minus the diameter of the tail end steel wire rope.

5. The on-line continuous desilting coal mine central sump of claim 4, wherein: the pin sleeves (9-1G) are arranged at equal intervals along the length of the framework pipe (9-1A), the interval distance is greater than the length of the mud pushing plate (9-1B), the effective stroke of the mud pushing jack (9-4) is greater than twice the distance between the adjacent pin sleeves (9-1G), and the length of the tail end steel wire rope is greater than the sum of twice the distance between the two adjacent pin sleeves (9-1G) and the diameter of the tail end guide pulley (9-5).

6. The on-line continuous desilting coal mine central sump of claim 5, wherein: the mud pushing jack (9-4) is arranged in the bin top connecting roadway (5), and the head end fixed pulley comprises a bin top guide pulley (9-3) arranged at the corner of the bin top connecting roadway (5) and the side wall of the inclined water bin and a bin bottom guide pulley (9-2) arranged at the lower end of the inclined water bin.

7. An on-line continuous desilting coal mine central sump according to any one of claims 2 to 6, characterized in that: the rotating shaft penetrates through the upper end part of the pin sleeve (9-1G) to be provided with an external thread, a nut (9-1E) is arranged in match with the external thread, an anti-wear gasket (9-1D) is arranged between the nut (9-1E) and the pin sleeve (9-1G), and a back-tightening thin nut (9-1F) is arranged above the nut (9-1E).

8. The on-line continuous desilting coal mine central sump of claim 7, wherein: the bottom end of the mud pushing plate (9-1B) is higher than the bottom end of the framework pipe (9-1A).

9. The on-line continuous desilting coal mine central sump of claim 8, wherein: the lower parts of the two side walls of the inclined water sump are provided with inclined planes with inclination angles of 45-70 degrees, the bottom surface of the inclined water sump is provided with a mud accumulating groove (8), and the mud pushing device (9) is arranged at the bottom of the mud accumulating groove (8).

10. The on-line continuous desilting coal mine central sump of claim 9, wherein: the inclined water sump comprises a water sump inlet section (1-1), a water sump second section (1-2), a water sump third section (1-3), a water sump fourth section (1-4), a water sump fifth section (1-5) and a water sump outlet section (1-6) which are connected in turn in a zigzag manner, the high end of the water sump inlet section (1-1) is connected with a shaft bottom parking lot roadway (7), the low end of the water sump inlet section (1-1) is connected with the low end of the water sump second section (1-2), the high end of the water sump second section (1-2) is connected with the high end of the water sump third section (1-3), the low end of the water sump third section (1-3) is connected with the low end of the water sump fourth section (1-4), the high end of the water sump fourth section (1-4) is connected with the high end of the water sump fifth section (1-5), the lower end of the fifth section (1-5) of the water sump is connected with the lower end of the outlet section (1-6) of the water sump, the high end of the outlet section (1-6) of the water sump is connected with the central water pump room (10), and the coal slurry cooling and transporting roadway (4) is further connected with an emergency water sump connecting roadway (6) connected with the central water pump room (10).

Images