CN219314791U

CN219314791U - Deep well mining mud separation system

Info

Publication number: CN219314791U
Application number: CN202320228472.7U
Authority: CN
Inventors: 牟富君; 是健; 谭新君
Original assignee: Jiangsu Juneng Machinery Co ltd; JUNENG MACHINERY (CHINA) CO Ltd
Current assignee: Jiangsu Juneng Machinery Co ltd; JUNENG MACHINERY (CHINA) CO Ltd
Priority date: 2023-01-19
Filing date: 2023-02-16
Publication date: 2023-07-07
Anticipated expiration: 2033-02-16

Abstract

The utility model discloses a deep well mining slurry separation system which is all arranged in a deep well and comprises a collecting tank, a vibrating screen, a first conveying pump and a centrifugal dehydrator which are sequentially connected, wherein a slurry outlet of the centrifugal dehydrator is connected with a slurry inlet end of a conveyor, a liquid outlet of the centrifugal dehydrator is connected with a liquid inlet of a cyclone through a second conveying pump, a bottom flow port of the cyclone is connected to the slurry inlet of the centrifugal dehydrator, and an overflow port is arranged on the cyclone. The utility model is applied to a deep well mining site, the whole system is arranged in the deep well, the on-site collection treatment is directly carried out on the slurry generated by mining, the obtained dry slurry is carried away, the obtained clear water is directly discharged, the slurry is not required to be sent to the ground for subsequent treatment, the use of slurry conveying equipment is greatly saved, the equipment cost and the maintenance cost are greatly reduced, the blocking accident of a plunger pump is avoided, the power consumption is reduced, and the treatment efficiency is improved.

Description

Deep well mining mud separation system

Technical Field

The utility model relates to the technical field of deep well mining slurry treatment, in particular to a deep well mining slurry separation system.

Background

China is a country with abundant mineral resources, the development of the mineral resources is also advancing to the deep part, the chlorine ion content can reach 1000 ppm-26000 ppm due to the severe environment under the ground, and the equipment in the mine is extremely easy to corrode.

In the geological core drilling process, a large amount of drilling waste mud is inevitably generated, and because deep well mining is generally carried out in a deep place under the ground, if the waste mud generated by drilling is not timely processed, the underground environment is affected, the mining work of workers is not facilitated, and moreover, drainage pipelines can be possibly blocked by the mud, even the underground drainage system of the whole mining area is affected, so that great potential safety hazards exist.

Currently, the main method for treating waste mud generated in deep well mining is to carry the waste mud to the ground in stages through a high-pressure plunger pump, and further treat the waste mud on the ground. The main problems of this method are the large number of required slurry conveying equipment (plunger pumps), the easy damage, the high maintenance cost, the high power consumption and the relatively low efficiency.

Disclosure of Invention

Aiming at the defects of the existing deep well mining waste slurry treatment, the applicant provides a deep well mining slurry separation system with reasonable structure, which reduces treatment equipment, equipment cost and maintenance cost, reduces power consumption and improves efficiency.

The technical scheme adopted by the utility model is as follows:

the deep well mining slurry separation system is arranged in a deep well and comprises a collecting tank, a vibrating screen, a first conveying pump and a centrifugal dehydrator which are sequentially connected, wherein a slurry outlet of the centrifugal dehydrator is connected with a slurry inlet end of the conveyor, a liquid outlet of the centrifugal dehydrator is connected with a liquid inlet of a cyclone through a second conveying pump, a bottom flow port of the cyclone is connected to a slurry inlet of the centrifugal dehydrator, and an overflow port is arranged on the cyclone; a spiral conveyer is arranged in the rotary drum of the centrifugal dehydrator, a separation cavity is arranged between the spiral conveyer and the rotary drum, and the separation cavity is communicated with a mud outlet and a liquid outlet; spiral blades are axially arranged on the periphery of the spiral conveyor and positioned in the separation cavity; the feeding end of the screw conveyer is provided with a feeding bin, a plurality of feeding ports are formed in the feeding bin, and the feeding ports are communicated with the feeding bin and the separation cavity.

As a further improvement of the above technical scheme:

the spiral blade is provided with a wear-resistant layer; the feed inlet is provided with a wear-resistant sleeve.

The wear-resistant layer and/or the wear-resistant sleeve adopts wear-resistant alloy or wear-resistant ceramic sleeve.

The outer surface of the shell of the centrifugal dehydrator is provided with an anti-corrosion coating, and the anti-corrosion coating is a thermal aluminum spraying coating.

The control system of the centrifugal dehydrator is an automatic control system, and the rotating speed difference of the rotary drum and the screw conveyor can be automatically adjusted according to different solid contents of the slurry to be matched.

The cyclone adopts the centrifugal sedimentation principle, and particles with small granularity and clear water move upwards along with the internal spiral cyclone and flow out of the overflow port, and particles with large granularity move downwards along with the external spiral cyclone and flow out of the bottom flow port.

The inner surface of the cyclone shell is provided with a wear-resistant lining, and the wear-resistant lining adopts wear-resistant ceramics; the centrifugal dehydrator is connected with a single-stage cyclone or is connected with a plurality of stages of cyclones in parallel.

The conveyor adopts a belt conveyor, and the mud inlet end of the belt conveyor is lower than the mud outlet end.

The screen mesh is arranged in the vibrating screen and is inclined downwards from the inlet to the outlet.

The collecting tank is internally provided with a stirrer.

The beneficial effects of the utility model are as follows:

the utility model is applied to a deep well mining site, the whole system is arranged in the deep well, the on-site collection treatment is directly carried out on the slurry generated by mining, the obtained dry slurry is carried away, the obtained clear water is directly discharged, the slurry is not required to be sent to the ground for subsequent treatment, the use of slurry conveying equipment is greatly saved, the equipment cost and the maintenance cost are greatly reduced, the blocking accident of a plunger pump is avoided, the power consumption is reduced, and the treatment efficiency is improved. The whole system has compact structure, high functional strength and high processing efficiency.

The utility model adopts the wear-resistant alloy or the wear-resistant ceramic sleeve for the spiral blade and the wear-resistant sleeve, can improve the wear resistance of key parts of the equipment, improve the problem of wear failure caused by long-time flushing by mud, effectively adapt to the working condition of mud with high solid content in a mine, prolong the service life and reduce the maintenance cost.

According to the utility model, the steel shell of the centrifugal dehydrator is subjected to hot aluminum spraying treatment, a layer of anti-corrosion coating is formed on the outer surface of the shell, and because aluminum is negative potential, the anti-corrosion coating and the steel matrix of the shell form cathode protection of a sacrificial anode, and even if the anti-corrosion coating is partially damaged in a degradation environment, the anti-corrosion coating still has the effect of sacrificing the self-protection of the steel matrix.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic partial structure of the centrifugal dehydrator.

Fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure: 1. a collection tank; 11. a stirrer; 2. a vibrating screen; 21. a screen; 3. a first transfer pump; 4. a centrifugal dehydrator; 41. a mud inlet; 42. a mud outlet; 43. a liquid outlet; 44. a rotating drum; 45. a screw conveyor; 46. a helical blade; 47. a wear-resistant layer; 48. a feed inlet; 49. a wear-resistant sleeve; 50. a separation chamber; 60. a feeding bin; 5. a second transfer pump; 6. a cyclone; 61. a liquid inlet; 62. an overflow port; 63. a bottom flow port; 64. an outer spiral; 65. an inner spiral; 7. a conveyor; 71. a mud inlet end; 72. a mud outlet end; 8. and (5) a transport vehicle.

Detailed Description

The following describes specific embodiments of the present utility model with reference to the drawings.

As shown in fig. 1, the deep well mining slurry separation system of the utility model is arranged in a deep well and comprises a collecting tank 1, a vibrating screen 2, a first conveying pump 3, a centrifugal dehydrator 4, a second conveying pump 5, a cyclone 6 and a conveyor 7, wherein a slurry outlet of the collecting tank 1 is connected with an inlet of the vibrating screen 2, an outlet of the vibrating screen 2 is connected with a slurry inlet 41 of the centrifugal dehydrator 4 through the first conveying pump 3, a slurry outlet 42 of the centrifugal dehydrator 4 is connected with a slurry inlet 71 of the conveyor 7, a liquid outlet 43 of the centrifugal dehydrator 4 is connected with a liquid inlet 61 of the cyclone 6 through the second conveying pump 5, and a bottom flow port 63 of the cyclone 6 is connected with the slurry inlet 41 of the centrifugal dehydrator 4; the discharge end 72 of the conveyor 7 can deliver dry sludge directly to the conveyor 8 and carried away by the conveyor 8.

Be equipped with agitator 11 in the collection tank 1, agitator 11 can stir the mud of collecting in the collection tank 1, improves the homogeneity of mud, is favorable to improving the separation effect of mud, improves treatment effeciency.

Be provided with screen cloth 21 in the shale shaker 2, screen cloth 21 passes through the vibrator by the motor and drives the vibration, carries out coarse filtration to the mud, and mud flows through from screen cloth 21, can filter coarser solid particle, avoids coarse particle to get into centrifugal dehydrator 4 and causes the damage to centrifugal dehydrator 4, reduces centrifugal dehydrator 4's fault rate, reduces cost of maintenance, prolongs centrifugal dehydrator 4's life-span, improves work efficiency. The screen 21 is inclined downwards from the inlet to the outlet, so that slurry is conveyed from the inlet to the outlet, and conveying efficiency is improved.

As shown in fig. 2 and 3, a screw conveyer 45 is inserted in the drum 44 of the centrifugal dehydrator 4, an annular cavity between the screw conveyer 45 and the drum 44 is a separating cavity 50, and the separating cavity 50 is communicated with the mud outlet 42 and the liquid outlet 43. Screw conveyor 45 is axially provided with screw blades 46 at its periphery, which screw blades 46 are located in separation chamber 50 for pushing the slurry in separation chamber 50 from front to back. The edge of the spiral blade 46 is provided with the wear-resistant layer 47, and the wear-resistant layer 47 adopts wear-resistant alloy or wear-resistant ceramic sleeve, so that the wear resistance of the spiral blade 46 can be improved, the problem of abrasion of the spiral blade 46 caused by long-time slurry flushing is solved, the service life is prolonged, and the maintenance cost is reduced. The feed end of the screw conveyer 45 is provided with a feed bin 60, the feed bin 60 is provided with a plurality of feed inlets 48, the feed inlets 48 are communicated with the feed bin 60 and the separation cavity 50, and slurry firstly enters the feed bin 60 after being conveyed in, and then enters the separation cavity 50 through the feed inlets 48, so that the uniformity of the slurry is improved, and the separation effect and the separation efficiency are improved. The feed inlet 48 is provided with the wear-resistant sleeve 49, and the wear-resistant sleeve 49 is made of wear-resistant alloy or wear-resistant ceramic, so that the wear resistance of the feed inlet 48 can be improved, the problem of abrasion of the feed inlet 48 caused by long-time slurry flushing is solved, the service life is prolonged, and the maintenance cost is reduced.

In order to improve the corrosion resistance of the centrifugal dehydrator 4, the steel shell of the centrifugal dehydrator 4 is subjected to hot aluminum spraying treatment, a layer of corrosion-resistant coating is formed on the outer surface of the shell, and because aluminum is negative potential, the corrosion-resistant coating and the steel matrix of the shell form the cathode protection of a sacrificial anode, and even if the corrosion-resistant coating is partially damaged in a corrosion environment, the corrosion-resistant coating still has the effect of sacrificing the self to protect the steel matrix.

The control system of the centrifugal dehydrator 4 is an automatic control system, and the rotating speed difference of the rotary drum 44 and the screw conveyor 45 can be automatically adjusted according to different solid contents of the slurry so as to adapt to the slurry with different solid contents, ensure the running stability of the equipment and ensure the separation efficiency.

As shown in fig. 1, the liquid inlet 61 of the cyclone 6 is offset arranged on the side surface of the cyclone 6 shell, the bottom flow port 63 is arranged at the bottom of the cyclone 6 shell, and the top of the cyclone 6 shell is provided with the overflow port 62. The cyclone 6 adopts the centrifugal sedimentation principle, and after the clear liquid separated by the centrifugal dehydrator 4 is conveyed by the second conveying pump 5, the clear liquid enters the cyclone 6 along the tangential direction of the shell of the cyclone 6 and rotates at a high speed, and under the action of a centrifugal force field, particles with very fine granularity and clear water are enriched in the center of the axis of the cyclone 6 due to small centrifugal force, and move upwards along with the rotational flow of the internal screw 65 and flow out of the overflow port 62 at the top; the particles with larger granularity are thrown to the inner wall of the cyclone 6 due to larger centrifugal force, and simultaneously, the particles move downwards along with the cyclone of the outer screw 64 under the action of gravity, flow out of the bottom flow port 63 at the bottom, and flow back into the centrifugal dehydrator 4 again through a pipeline for recycling separation. The inner surface of the cyclone 6 shell is provided with the wear-resistant lining, the wear-resistant lining adopts wear-resistant ceramics, the wear resistance is improved, the abrasion problem of the cyclone 6 shell caused by long-time sediment scouring is improved, the service life is prolonged, and the maintenance cost is reduced. In this embodiment, the supernatant separated by the centrifugal dehydrator 4 is filtered by adopting a single-stage cyclone 6, and under the working conditions of other embodiments, the filtering efficiency can be improved by adopting a multi-stage cyclone 6 to be used in parallel.

As shown in fig. 1, the conveyor 7 adopts a belt conveyor, the mud inlet end 71 of the belt conveyor is lower than the mud outlet end 72, and the dry mud is conveyed upwards on the conveyor 7 from the lower slant, so that the dry mud is convenient for further draining water on the conveyor 7, and the dryness of the dry mud is facilitated to be improved.

When the utility model is actually used, the slurry produced by deep well mining is collected in the collecting tank 1, stirred uniformly in the collecting tank 1 and then sent to the vibrating screen 2, coarse filtration is carried out on the vibrating screen 2, solid particles with the diameter of more than 3mm are filtered, and the solid content of the filtered slurry is between 10% and 40%; the slurry after the coarse filtration of the vibrating screen 2 is conveyed to a centrifugal dehydrator 4 through a first conveying pump 3, and solid-liquid separation is carried out on the centrifugal dehydrator 4; the dry mud separated in the centrifugal dehydrator 4 is output to the conveyor 7 from the mud outlet 42, and is sent to the transport vehicle 8 by the conveyor 7 to be sent away; the solid content of the clear liquid separated from the centrifugal dehydrator 4 is between 5 and 10 percent, the clear liquid is sent to the cyclone 6 by the second delivery pump 5 to be filtered again, the clear water separated from the cyclone 6 flows out from the overflow port 62, and the concentrated solution precipitated at the bottom flows back to the centrifugal dehydrator 4 from the bottom flow port 63 to be recycled.

The above description is illustrative of the utility model and is not intended to be limiting, and the utility model may be modified in any form without departing from the spirit of the utility model.

Claims

1. A deep well mining mud separation system, characterized by: all the centrifugal dehydrators are arranged in a deep well and comprise a collecting tank (1), a vibrating screen (2), a first conveying pump (3) and a centrifugal dehydrator (4) which are sequentially connected, a mud outlet (42) of the centrifugal dehydrator (4) is connected with a mud inlet end (71) of a conveyor (7), a liquid outlet (43) of the centrifugal dehydrator (4) is connected with a liquid inlet (61) of a cyclone (6) through a second conveying pump (5), a underflow opening (63) of the cyclone (6) is connected to a mud inlet (41) of the centrifugal dehydrator (4), and an overflow opening (62) is arranged on the cyclone (6);

a spiral conveyer (45) is arranged in a rotary drum (44) of the centrifugal dehydrator (4), a separation cavity (50) is arranged between the spiral conveyer (45) and the rotary drum (44), and the separation cavity (50) is communicated with a mud outlet (42) and a liquid outlet (43); the periphery of the screw conveyor (45) is axially provided with screw blades (46), and the screw blades (46) are positioned in the separation cavity (50); the feeding end of the screw conveyor (45) is provided with a feeding bin (60), a plurality of feeding ports (48) are formed in the feeding bin (60), and the feeding ports (48) are communicated with the feeding bin (60) and the separation cavity (50).

2. The deep well mining mud separation system of claim 1, wherein: the spiral blade (46) is provided with a wear-resistant layer (47); the feed inlet (48) is provided with a wear-resistant sleeve (49).

3. The deep well mining mud separation system of claim 2, wherein: the wear-resistant layer (47) and/or the wear-resistant sleeve (49) are made of wear-resistant alloy or wear-resistant ceramic sleeve.

4. The deep well mining mud separation system of claim 1, wherein: the outer surface of the shell of the centrifugal dehydrator (4) is provided with an anti-corrosion coating, and the anti-corrosion coating is a thermal spraying aluminum coating.

5. The deep well mining mud separation system of claim 1, wherein: the control system of the centrifugal dehydrator (4) is an automatic control system, and the rotating speed difference of the rotary drum (44) and the screw conveyor (45) can be automatically adjusted according to different solid contents of the slurry to be matched.

6. The deep well mining mud separation system of claim 1, wherein: the cyclone (6) adopts a centrifugal sedimentation principle, particles with small granularity and clear water move upwards along with the rotational flow of the inner spiral (65) and flow out of the overflow port (62), and particles with large granularity move downwards along with the rotational flow of the outer spiral (64) and flow out of the underflow port (63).

7. The deep well mining mud separation system of claim 1, wherein: the inner surface of the cyclone (6) shell is provided with a wear-resistant lining, and the wear-resistant lining adopts wear-resistant ceramics; the centrifugal dehydrator (4) is connected with a single-stage cyclone (6) or is connected with a plurality of stages of cyclones (6) in parallel.

8. The deep well mining mud separation system of claim 1, wherein: the conveyor (7) adopts a belt conveyor, and the mud inlet end (71) is lower than the mud outlet end (72).

9. The deep well mining mud separation system of claim 1, wherein: a screen (21) is arranged in the vibrating screen (2), and the screen (21) is inclined downwards from the inlet to the outlet.

10. The deep well mining mud separation system of claim 1, wherein: a stirrer (11) is arranged in the collecting tank (1).