SU1447982A1 - Method of cleaning slurry collectors of mine water-drawing installation from solid inclusions - Google Patents

Abstract

The invention relates to the water lowering in CTpOHTejjbCTBe, in particular to the cleaning of sludge collectors of underground workings. The purpose of the invention is to improve the reliability and efficiency by primary and secondary deposition of solid inclusions, slam. of the latter with the formation in the area of suction of the slurry pump of the central and ring jet-vortex flows. The subsequent collection of inclusions is made from the central part of the upwardly directed along the suction axis of the slurry flow pump and the discharge of clarified water from the upper part of the annular flow. In this case, in the process of collecting solid inclusions, an additional stream is formed with inclusions of secondary precipitation. This flow is introduced into the central jet-vortex flow, and the primary and secondary sedimentation are carried out in separate sumps. As a result of these measures, the degree of water clarification increases, reducing the degree of pump wear, accelerates the process of primary and secondary precipitation, sampling, thickening and transportation of inclusions. 3 il. i (i

Description

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The invention relates to water lowering in construction, in particular to cleaning slag collectors from solid inclusions of underground workings, and can be used in other industries to condense and transport solid inclusions from storage tanks while simultaneously bleaching and separating a part of the intake medium.

The purpose of the invention is to increase the reliability and efficiency of cleaning.

FIG. 1 shows an installation for the implementation of the proposed method, the general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 section bb in fig. one.

An installation for implementing a method for cleaning slurry accumulators of a mine dewatering installation from solid inclusions has a pumping chamber 1 with pumps 2 for drainage, vassas 3 of which are housed in an adjusting catchment basin made in the form of an in-flow horizontal settling tank 4. Next to the latter is a sludge collector

5, separated from the sump 4 jumper

6, which houses the inlet 7 of the slurry pump 8 and the inlet pipe 9 connected to the groove 10.

Suction 7 contains a conical downward extending umbrella 11, having an inner concave surface 12 and located at a certain height from the bottom 13. A circular nozzle 15 is located above the last inlet 7 and below the umbrella 11 around the suction area 14, which exceeds the diameter of the umbrella 11. 7, a central nozzle 16 is mounted on the bottom 13 and directed in the suction side 7. In the body of the umbrella 11, the axial suction axis 7 is symmetrical to the annular cavity 17, which is in communication with the suction area directed in the direction opposite to the suction 7, the annular channel 18. 17 is connected to the drain pipe 19, the outlet of which is installed in the sump 4.

Nozzles 15 and 16 are supplied with their supply pipelines 20 and 21, respectively. The first one is connected to the discharge part of the pump 22, and the second to the discharge part of the hydraulic elevator 23, the discharge nozzle 24 of which is connected to the discharge part of the pump 22, and the inlet 25 is connected to the perforated pipe 26 placed on the bottom 27 of the sump 4. In the bridge 6 The level of the bottom 27 is placed thin-layer apparatus 28 with plates inclined in the direction of the sludge collector 5.

The sump well 29 is also adjacent to the sump 4, to which it is connected10

slider 33. The well 29 is separated by a jumper 34. The upper edge of the latter corresponds to the emergency water level in the sump 4. The latter also provides for upper (WU) and lower (WELL) water levels. The pipe 19 is equipped with a valve 35.

FIG. 1 shows a second installation variant for implementing the proposed method, in which the branch 31 and the well 29 perform the function of an adjusting water collector (an emergency water collector in the second embodiment is not shown) separated from the sump 4 by a jumper 34. The pumps 2 are absent in this case, their function is performed There are pumps 32, the suction of which is installed in 15 well 29. The main difference is in. placing the outlet of the drain pipe 19 in the well 29.

The method of cleaning sludge collectors of a mine drainage installation from solid inclusions is dried as follows.

After the adjusting catchment basin (settling tank 4) is drained to the level of NU, it is filled with the inflow of it and the sludge accumulator 5. The water with solid inclusions contained in it from the groove 10 goes through the pipeline 9 to the sludge collector 5, where large inclusions are intense, t. e. Primary precipitation occurs. From the sludge accumulator 5, the inflow enters the settling tank 4, the passage through the thin-layer apparatus 28. With the help of the latter only inclusions of a certain size are separated, and small fractions with a particle size of 0.2 mm or less are carried into the settling tank 4. The flow rate -,; - in the settling tank 4 decreases sharply, as a result, there is an intensive precipitation of the fine fraction of inclusions. The filling of the settling tank 4 and the sludge accumulator 5 is carried out to the level of the water of the inlet water.

20

25

thirty

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After that, the pump 22 is turned on and a working flow is created for the hydraulic elevator 23, as a result of which a suction flow is formed by means of the pipe 26 in the direction from the sump 4 to the central nozzle 16 filled with inclusions precipitated during the secondary sedimentation process and directed to the slurry suction area pump 8 in the form of a central flow at the outlet of the nozzle 16.

After entering the pump 8 into operation open the valves 33 and 35 and the liquid from the pump 22 enters the annular nozzle 15. Then turn on the required number of pumps 2 drainage. As a result, the latter give out clear water to the surface. From pona through a normally open valve 30 using a slurry pump 8 is carried out

branch 31, serving as an emergency catchment collection of the slurry simultaneously from the sludge

32

com drainage pumps are connected to well 29. The pipeline 20 is equipped with a zanapitel 5 and a settling tank 4 and transporting it to the set point of discharge

0

slider 33. The well 29 is separated by a jumper 34. The upper edge of the latter corresponds to the emergency water level in the sump 4. The latter also provides for upper (WU) and lower (WELL) water levels. The pipe 19 is equipped with a valve 35.

FIG. 1 shows a second installation variant for implementing the proposed method, in which the branch 31 and the well 29 perform the function of an adjusting sump (an emergency sump in the second variant is not shown) separated from the sump 4 by a jumper 34. The pumps 2 are absent in this case, their function is performed pumps 32, which are mounted in 5 well 29. The main difference is in. placing the outlet of the drain pipe 19 in the well 29.

The method of cleaning sludge collectors of a mine drainage installation from solid inclusions is dried as follows.

After the adjusting catchment basin (settling tank 4) is drained to the level of NU, it is filled with the inflow of it and the sludge accumulator 5. The water with solid inclusions contained in it from the groove 10 goes through the pipeline 9 to the sludge collector 5, where large inclusions are intense, t. e. Primary precipitation occurs. From the sludge accumulator 5, the inflow enters the settling tank 4, the passage through the thin-layer apparatus 28. With the help of the latter only inclusions of a certain size are separated, and small fractions with a particle size of 0.2 mm or less are carried into the settling tank 4. Flow rate; - in the sump 4 decreases sharply, as a result, there is an intensive precipitation of the fine fraction of inclusions. The filling of the settling tank 4 and the sludge accumulator 5 is carried out to the level of the water of the inlet water.

0

five

0

0

five

0

After that, the pump 22 is turned on and a working flow is created for the hydraulic elevator 23, as a result of which a suction flow is formed by means of the pipe 26 in the direction from the sump 4 to the central nozzle 16 filled with inclusions precipitated during the secondary sedimentation process and directed to the slurry suction area pump 8 in the form of a central flow at the outlet of the nozzle 16.

After entering the pump 8 into operation open the valves 33 and 35 and the liquid from the pump 22 enters the annular nozzle 15. Then turn on the required number of pumps 2 drainage. As a result, the latter give out clear water to the surface. Using a slurry pump 8 is carried out

the drive 5 and the sump 4 and transporting it to the set point of discharge

on the surface in the sludge deposit or in the mined space of the mine.

In the process of collecting solid inclusions from the sludge accumulator 5 in the suction 7 suction area 14, a forced transporting inclusions flow consisting of radially converging entraining precipitating inclusions from the periphery of the sludge accumulator 5 to the suction axis 7 of current B and the extension of the last symmetrical axis the suction of the jet G, the central part of which, together with the inclusions condensed in it, is taken by means of the suction 7. Due to the increased kinetic energy of the jet, the layer of inclusions in the bottom of the jet is destroyed The second part in the area between the nozzle 15 and the suction area 14 with the separation of large particles and their entrainment to the area 14.

In the process of turning the flow from the flow B to the jet G due to the curvature of the flow lines of the liquid and the resulting inertia forces, the mass of transported inclusions thickens in the central part of the jet G,

Further, the peripheral annular part of the jet F at some distance from the suction 7 enters the lower surface 12 of the umbrella 11 and when it coalesces with flow B, it collapses into an annular rotating flow D, consisting, especially in its upper part, of the clarified liquid, part of which is drained through the pipe 19 into the sump 4, this reduces the load on the thin layer apparatus 28 and generally improves the effect of water clarification, and also improves the operating conditions of the pumps 2 by pumping out more clarified water.

The process of pumping out water and removing solid inclusions continues to the level of the water in the sump 4. The installation then turns off and the cycle repeats.

In case of emergency conditions

After drying the sump 4 and the sump well 29 with a sump 31, the sump 4 is filled as in the first embodiment. However, the suction well 29 is not filled, and after filling the sump 4, the pumps 22 are turned on and the valve 35 is opened. As a result, the pump 8 is removed, and the clarified water flows through the drain pipe 19 into the well 29. Upon reaching the catchment area 31 with a well, a level 29 WU, include pumps 32 and transport water to the surface. Upon reaching the NU in the sump 4, the valves 35 and 33 are closed and the pumps 8 and 22 are turned off, after reaching the level 29 of the NU in the well 29, the pumps 32 are turned off. Further, the cycle of the installation is repeated. Under emergency conditions, the removal of water is carried out similarly to the first embodiment.

ten

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thirty

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In the proposed method, the processes of sedimentation, intake and thickening of solid inclusions and clarification of water entering pumps 2 and 32 proceed more efficiently due to the formation of a stream filled with inclusions precipitated during the secondary precipitation process, which is directed to the suction area of the slurry pump as a central stream.

Claims (1)

Invention Formula The method of cleaning sludge collectors of a mine drainage installation from solid inline seals, containing primary and secondary sedimentation of solid inclusions in settling tanks, forced vzmuchivanie inclusions of primary sedimentation with the formation of the central and ring-shaped jet-vortex flows directed upwards to the inlet of the slurry pump parts of the ring-shaped while the water level corresponds to the level of the AC, the current, the collection of inclusions and the separate transfer is poured through the jumper 34 into the water intake The well 29 and fills branch 31 through valve 30, while the flow passes through the sump 4 at low speeds, is free from inclusions and does not litter the water collector 31. To release the branch 31, the pump 32 is turned on, and the water is pumped out simultaneously and from septic tank 4 until emergency conditions are eliminated. Pumps 2 are turned off after the water level has been lowered, in the sump 4 to NU..50 The proposed method using the installation according to the second embodiment is carried out as follows. porting the inclusion and clarified water to the surface, respectively, by means of sludge and drainage pumps, characterized in that, in order to increase the reliability and efficiency of cleaning, during the collection of inclusions, an additional flow is formed with secondary sedimentation, the discharge of the clarified water is led to the drainage wells pumps, and the primary and secondary precipitations are carried out in separate septic tanks, with an additional stream introduced into the central jet-vortex stream. . After drying the sump 4 and the sump well 29 with a sump 31, the sump 4 is filled as in the first embodiment. However, the suction well 29 is not filled, and after filling the sump 4, the pumps 22 are turned on and the valve 35 is opened. As a result, the pump 8 is removed, and the clarified water flows through the drain pipe 19 into the well 29. Upon reaching the catchment area 31 with a well, a level 29 WU, include pumps 32 and transport water to the surface. Upon reaching NU in the sump 4, valves 35 and 33 are closed and pumps 8 and 22 are turned off, and when the level 29 NU is reached at the well 29, the outlets 32 are turned off. Further, the cycle of the installation is repeated. Under emergency conditions, the removal of water is carried out similarly to the first embodiment. 0 In the proposed method, the processes of sedimentation, intake and thickening of solid inclusions and clarification of water entering pumps 2 and 32 proceed more efficiently due to the formation of a stream filled with inclusions precipitated during secondary sedimentation, which are directed to the suction area of the slurry pump in the form of a central flow. Invention Formula The method of cleaning sludge collectors of mines, water drainage installation from solid inline seals, containing primary and secondary sedimentation of solid inclusions in settling tanks, forced vzmuchivanie inclusions of primary sedimentation with the formation of the central and ring-shaped jet-vortex flows directed upwards to the intake of the slurry the upper part of the annular flow, the collection of inclusions and the separate transportation of the inclusion and clarified water to the surface, respectively, by sludge and drainage pumps, characterized in that, in order to improve the reliability and efficiency of cleaning, in the process of collecting inclusions, an additional flow is formed with secondary sedimentation, the clarified water is drained into the suction wells of the drainage pumps, and primary and secondary sedimentation in separate sedimentation tanks, with the additional flow being introduced into the central jet-vortex flow. . 30-gz srcg.1 2 ////// (/////////// ////////// Л / J (pa / (rah.Z