Coal mine water prevention and control equipment

Abstract

The invention discloses coal mine water prevention and control equipment which comprises a sludge pump and a transition cylinder, a suction port of the sludge pump is communicated with a sludge discharge pipe, and one end of the sludge discharge pipe is communicated with the transition cylinder. When the liquid level sensor detects that the liquid level of the in-mine sedimentation tank exceeds a preset value of the PLC, the PLC starts the sludge pump to work to promote the transition cylinder communicated with the sludge discharge pipe to extract upper-layer sewage in the in-mine sedimentation tank through the suction nozzle at the bottom of the transition cylinder, so that the liquid level of the coal mine sewage in the sedimentation tank reaches a dynamic balance state; water damage caused by continuous rising of the liquid level of the sedimentation tank is avoided, in the desilting stage of the sedimentation tank, the motor of the transition barrel is started to work, the motor is promoted to drive the multiple crushing cutter sets of the shaft rod to rotate, and the crushing cutter sets with the strip-shaped blades and the convex columns are made to crush sludge cakes or stone blocks entering the transition barrel.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine water prevention and control equipment, and in particular to a coal mine water prevention and control equipment. Background Art

[0002] The sewage treated underground in coal mines needs to be precipitated in sedimentation tanks. The sedimentation tanks underground in coal mines need to be cleaned of sludge after a certain period of time. Excessive sludge accumulation will affect the effective volume of the sedimentation tank. Cleaning the sludge in the sewage will facilitate the next step of sewage treatment and reduce the pollution caused by coal mine water. However, the manual cleaning of sludge accumulation is inefficient and the sludge cleaning is very inconvenient, which is not conducive to the prevention and control of coal mine water hazards.

[0003] After searching, application number CN202322914363.3 is a dredging equipment for coal mine water hazard prevention and control; it includes a car head and a car plate, a movable plate is installed on the top of the car plate, one end of the movable plate is fixedly connected to a horizontal hydraulic cylinder, the free end of the horizontal hydraulic cylinder is fixedly connected to the side of the movable plate, the fixed end of the horizontal hydraulic cylinder is fixedly connected to the top of the car plate, a guide mechanism is arranged between the movable plate and the car plate, the four corners of the top of the movable plate are fixedly connected to vertically arranged guide columns, a lifting plate is passed through the guide column, a vertically arranged hydraulic cylinder is arranged in the middle position between the lifting plate and the movable plate, a sludge pump is installed on the top of the lifting plate, a sludge suction pipe is connected to the feed inlet of the sludge pump, the sludge suction pipe includes a horizontal part and a vertical part, the bottom of the sludge suction pipe is connected to a protective cover, the protective cover is a rectangular cavity structure with an opening at the bottom, and a sludge breaking device for breaking up the sludge is arranged in the protective cover.

[0004] First, the above scheme does not have a liquid level monitoring structure. The sedimentation tank under the coal mine is prone to a decrease in sewage storage due to the thick silt layer, which in turn causes the liquid level to continue to rise, causing water disasters in the coal mine. Secondly, the disintegration device in the above scheme has limited effect on breaking up the agglomerated silt blocks, which can easily cause blockage in the suction pipeline or the sludge pump. Stones that may exist in the sludge will also cause internal damage to the sludge pump.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies in the prior art, the present invention provides a coal mine water prevention and control device to solve the problems in the above-mentioned background technology.

[0008] (II) Technical solution

[0009] In order to achieve the advantages of water damage prevention, silt removal and sludge pre-crushing treatment, the specific technical scheme adopted by the present invention is as follows:

[0010] A coal mine water prevention and control equipment comprises a sludge pump and a transition tube, the suction port of the sludge pump is connected with a sludge discharge pipe, and one end of the sludge discharge pipe is connected with the transition tube, a motor is fixedly installed on the top of the transition tube, and the output end of the motor passes through the transition tube and is fixed with a shaft rod, a plurality of crushing knife groups are arranged at equal intervals on the lower surface of the shaft rod, and a plurality of strip blades are arranged around each crushing knife group, and a plurality of convex columns are welded on both sides of the strip blades of each crushing knife group, a suction nozzle is connected at the bottom of the transition tube, and a plurality of splicing tubes are threadedly connected at the bottom of the suction nozzle, and a plurality of through holes are opened on the surface of the suction nozzle, a support block is welded on the left side of the upper part of the transition tube, and a liquid level sensor is installed at the bottom of the support block, a placement box is welded on the surface of the transition tube, and a PLC controller and a buzzer are installed in the placement box, the output end of the PLC controller is electrically connected to the sludge pump and the buzzer respectively, and the liquid level sensor is electrically connected to the PLC controller.

[0011] Furthermore, a plurality of the splicing tubes have thread grooves on their tops, and a plurality of the splicing tubes have thread rings integrally cast on their bottoms, and another thread ring is provided at the bottom of the suction nozzle corresponding to the thread groove.

[0012] Furthermore, a hollow disk is welded to the inner wall surface of the transition cylinder, and a mounting hole is opened at the center of the hollow disk corresponding to the shaft rod, and a plurality of fan-shaped openings are opened around the surface of the hollow disk, the mounting hole and the shaft rod are interlaced and connected, and a ball bearing is embedded and installed in the gap between the mounting hole and the shaft rod.

[0013] Furthermore, an air suction nozzle is connected to the edge of the top surface of the transition tube, and the air suction nozzle is connected to an external vacuum pump through an air suction pipeline.

[0014] Furthermore, a connector is provided between the sludge pump and the transition tube, and the connector consists of a cross bar and an annular hoop, the cross bar of the connector is welded to the right side wall of the transition tube, and the annular hoop of the connector is fixedly connected to the outer wall of the casing of the sludge pump.

[0015] Furthermore, the crushing knife group is composed of a plurality of strip-shaped blades arranged around a central ring and an outer ring thereof, and the crushing knife group is located below the hollow disk.

[0016] Furthermore, a communication port connected to a sludge discharge pipe is opened on the right side wall of the transition tube, a circular flange is installed at one end of the sludge discharge pipe away from the sludge pump, and the surface of the circular flange is fixedly connected to the transition tube by bolts.

[0017] Furthermore, the front end surface of the accommodation box is opened, and a partition is welded horizontally inside the accommodation box. The accommodation box is equipped with a power supply, and the power output end is electrically connected to the sludge pump, PLC controller and buzzer respectively. The PLC controller is installed on the top surface of the inner partition of the accommodation box, and the buzzer is installed on the bottom surface of the inner partition of the accommodation box.

[0018] Furthermore, the lengths of the suction nozzle and the plurality of splicing tubes are adapted to the depth of the sedimentation tank in an underground coal mine.

[0019] Furthermore, the liquid level sensor is arranged in parallel with the transition tube, and the probe of the liquid level sensor is arranged toward the liquid surface of the sedimentation tank underground in the coal mine.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the present invention provides a coal mine water prevention and control equipment, which has the following beneficial effects:

[0022] (1) The present invention adopts a sludge pump, a sludge discharge pipe and a transition tube to form a coal mine water prevention and control device. When the liquid level sensor detects that the liquid level of the sedimentation tank in the mine exceeds the preset value of the PLC controller, the PLC controller starts the sludge pump, prompting the transition tube connected to the sludge discharge pipe to use the suction nozzle at the bottom to extract the upper sewage of the sedimentation tank in the mine, so that the coal mine sewage level in the sedimentation tank reaches a dynamic equilibrium state, avoiding water damage caused by the continuous rise of the sedimentation tank liquid level. In the sedimentation tank desilting stage, by starting the motor of the transition tube, the motor drives the several crushing knife groups of the shaft rod to rotate, so that the crushing knife groups with strip blades and protruding columns crush the sludge lumps or stones entering the transition tube. Compared with the prior art, on the one hand, it avoids water damage caused by the continuous rise of the sedimentation tank liquid level, and on the other hand, it avoids the blockage caused by sludge lumps or the damage of the sludge pump by stones while meeting the sedimentation tank desilting requirements.

[0023] (2) The present invention adopts a plurality of splicing tubes which are detachably installed at the suction nozzle at the bottom of the transition tube. Since the top and bottom of each splicing tube are provided with a threaded groove and a threaded ring, and the bottom of the suction nozzle is provided with another mounting ring, the plurality of splicing tubes are sequentially spliced ​​together into a whole by using the threaded groove and the threaded ring disk, and then the whole composed of the plurality of splicing tubes is brought close to the suction nozzle, so that the uppermost splicing tube is threadedly connected with the threaded ring at the bottom of the suction nozzle through the threaded groove, thereby extending the suction length of the suction nozzle, so that the suction length of the suction nozzle can be specifically adjusted according to the depth of the sludge layer at the bottom of the sedimentation tank. Since the surface of the suction nozzle is evenly provided with a plurality of through holes, it is easy to suction and clean the sludge in the sedimentation tank while satisfying the sewage suction, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 Schematic diagram of the overall structure of a coal mine water prevention and control device according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the external structure of a transition tube of a coal mine water prevention and control equipment according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of a transition tube of a coal mine water prevention and control equipment according to an embodiment of the present invention;

[0028] Figure 4 2 is a schematic diagram of the shaft structure of a coal mine water prevention and control equipment according to an embodiment of the present invention;

[0029] Figure 5 2 is a schematic diagram of a hollow plate structure of a coal mine water prevention and control equipment according to an embodiment of the present invention;

[0030] Figure 6 The present invention is a circuit block diagram of a coal mine water prevention and control device according to an embodiment of the present invention.

[0031] In the figure:

[0032] 1. Sludge pump; 2. Sludge discharge pipe; 3. Transition tube; 4. Connector; 5. Motor; 6. Placement box; 7. Support block; 8. Liquid level sensor; 9. PLC controller; 10. Buzzer; 11. Suction nozzle; 12. Through hole; 13. Splicing tube; 14. Exhaust nozzle; 15. Threaded groove; 16. Threaded ring; 17. Shaft; 18. Connecting port; 19. Hollow disk; 20. Crushing knife group; 21. Strip blade; 22. Boss; 23. Fan-shaped mouth; 24. Mounting hole; 25. Power supply. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the invention; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, in the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection", "fixation", "screwing" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Embodiment 1, refer to Figure 1-6A coal mine water prevention and control equipment includes a sludge pump 1 and a transition tube 3. The suction port of the sludge pump 1 is connected to a sludge discharge pipe 2, and one end of the sludge discharge pipe 2 is connected to the transition tube 3. A motor 5 is fixedly installed on the top of the transition tube 3, and the output end of the motor 5 passes through the transition tube 3 and is fixed with a shaft rod 17. A plurality of crushing knife groups 20 are arranged at equal intervals on the lower surface of the shaft rod 17, and each crushing knife group 20 is surrounded by a plurality of strip blades 21, and a plurality of protrusions 22 are welded on both sides of the strip blade 21 of each crushing knife group 20. The bottom of the transition tube 3 is connected to a suction nozzle 11, and the bottom of the suction nozzle 11 is threadedly connected to a plurality of splicing tubes 13, and a plurality of through holes 12 are opened on the surface of the suction nozzle 11. The left side of the upper part of the transition tube 3 is welded A support block 7 is connected, and a liquid level sensor 8 is installed at the bottom of the support block 7. A placement box 6 is welded on the surface of the transition tube 3, and a PLC controller 9 and a buzzer 10 are installed in the placement box 6. The output ends of the PLC controller 9 are electrically connected to the sludge pump 1 and the buzzer 10 respectively. The liquid level sensor 8 is electrically connected to the PLC controller 9. An air suction nozzle 14 is connected to the edge of the top surface of the transition tube 3, and the air suction nozzle 14 is connected to an external vacuum pump through an air suction pipe. A connector 4 is provided between the sludge pump 1 and the transition tube 3, and the connector 4 is composed of a cross bar and an annular hoop. The cross bar of the connector 4 is welded to the right side wall of the transition tube 3, and the annular hoop of the connector 4 is fixedly connected to the outer wall of the shell of the sludge pump 1. The crushing knife group 20 is composed of a center ring and a plurality of outer rings arranged around it. The sludge pump 1 is composed of a plurality of strip blades 21, and the crushing knife group 20 is located below the hollow disk 19. Through the crushing knife groups 20, it is easy to break up the lumps in the sludge, and the stones in the sludge can also be crushed to avoid blockage caused by sludge agglomeration or damage to the sludge pump 1 by stones. The right side wall of the transition tube 3 is provided with a connecting port 18 connected to the sludge discharge pipe 2. A circular flange is installed at the end of the sludge discharge pipe 2 away from the sludge pump 1, and the surface of the circular flange is fixedly connected to the transition tube 3 by bolts. An opening is provided on the front end surface of the placement box 6, and a partition is welded horizontally in the placement box 6. A power supply 25 is installed in the placement box 6, and the output end of the power supply 25 is electrically connected to the sludge pump 1, the PLC controller 9 and the buzzer 10 respectively. The PLC controller 9 is installed It is installed on the top surface of the inner partition of the placement box 6, and the buzzer 10 is installed on the bottom surface of the inner partition of the placement box 6. The liquid level sensor 8 is arranged in parallel with the transition tube 3, and the probe of the liquid level sensor 8 is arranged toward the liquid level of the sedimentation tank in the coal mine. By pointing to the liquid level sensor 8 (non-contact) pointing to the liquid level of the sedimentation tank in the coal mine, it is easy to monitor the liquid level of the sedimentation tank in the coal mine. For the automatic drainage of the sludge pump 1, the control method of the present invention is automatically controlled by the PLC controller 9. The control circuit of the PLC controller 9 can be realized by simple programming by technicians in this field. The provision of the power supply 25 is also common knowledge in this field, so the present invention will no longer explain the control method and circuit connection in detail. For the motor 5, the present invention is provided with a control switch matched with it.The installation position of the control switch is selected according to the actual use requirements, and it is convenient for the operator to operate and control. The sludge pump 1 in the present invention is specifically a mud pump or a mud pump, which is mainly used for dredging and can also be used for sewage discharge for a short time.

[0036] Example 2, refer to Figure 1-3 A threaded groove 15 is provided on the top of several splicing tubes 13, and a threaded ring 16 is integrally cast on the bottom of several splicing tubes 13. Another threaded ring 16 is provided at the bottom of the suction nozzle 11 corresponding to the threaded groove 15. The length of the suction nozzle 11 and several splicing tubes 13 is adapted to the depth of the sedimentation tank underground in the coal mine. Several splicing tubes 13 are spliced ​​in sequence with threaded grooves 15 and threaded rings 16 to form a whole, and then the whole composed of several splicing tubes 13 is threadedly connected to the suction nozzle 11, so as to extend the suction length of the suction nozzle 11, so as to adjust the suction length of the suction nozzle 11 in a targeted manner according to the depth of the sludge layer at the bottom of the sedimentation tank.

[0037] Example 3, refer to Figure 3 and Figure 5 A hollow disk 19 is welded on the inner wall of the transition tube 3, and a mounting hole 24 is opened at the center of the hollow disk 19 corresponding to the shaft rod 17, and a plurality of fan-shaped openings 23 are opened around the surface of the hollow disk 19, the mounting hole 24 and the shaft rod 17 are inserted and connected, and a ball bearing is embedded and installed in the gap between the mounting hole 24 and the shaft rod 17. Through the arrangement of the hollow disk 19 and the plurality of fan-shaped openings 23 on its surface, on the one hand, the lower space inside the transition tube 3 is formed into a crushing chamber, and on the other hand, the sludge that is easily pre-crushed enters the upper space inside the transition tube 3 through the plurality of fan-shaped openings 23, which facilitates the smooth discharge of the sludge.

[0038] Working principle:

[0039] When in use, first fix the sludge pump 1 to the side of the sedimentation tank, so that the bottom end of the transition tube 3 connected to the sludge pump 1 extends to the inside of the sedimentation tank. When the liquid level sensor 8 detects that the liquid level in the sedimentation tank in the mine exceeds the preset value of the PLC controller 9, the PLC controller 9 starts the sludge pump 1 to work, prompting the transition tube 3 connected to the sludge discharge pipe 2 to use the suction nozzle 11 at its bottom to extract the upper sewage of the sedimentation tank in the mine, so that the coal mine sewage level in the sedimentation tank reaches a dynamic equilibrium state, avoiding water damage caused by the continuous rise of the sedimentation tank level. When desilting the sedimentation tank, first connect the suction nozzle 14 to the suction pipe of the external vacuum pump so that The transition tube 3 is in a negative pressure state, and then the sludge pump 1 is started to work, so that the sludge in the sedimentation tank is sucked into the lowest splicing tube 13, and then transferred to the transition tube 3 by the suction nozzle 11 (in this process, several through holes 12 of the suction nozzle 11 are in a blocked state). At this time, by starting the motor 5 of the transition tube 3, the motor 5 drives the several crushing knife groups 20 of the shaft 17 to rotate, so that the crushing knife groups 20 with strip blades 21 and protruding columns 22 crush the sludge lumps or stones entering the transition tube 3, until the sludge enters the sludge pump 1 through the sludge discharge pipe 2 and is discharged from the mud outlet of the sludge pump 1.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal mine water prevention and control equipment, characterized in that: The invention comprises a sludge pump (1) and a transition tube (3), wherein the suction port of the sludge pump (1) is connected to a sludge discharge pipe (2), and one end of the sludge discharge pipe (2) is connected to the transition tube (3), a motor (5) is fixedly installed on the top of the transition tube (3), and the output end of the motor (5) passes through the transition tube (3) and is fixed with a shaft (17), a plurality of crushing knife groups (20) are arranged at equal intervals on the lower surface of the shaft (17), and each crushing knife group (20) is surrounded by a plurality of strip blades (21), and a plurality of protrusions (22) are welded on both sides of the strip blade (21) of each crushing knife group (20), and the bottom of the transition tube (3) is provided with a plurality of convex columns (22). A suction nozzle (11) is connected, and the bottom of the suction nozzle (11) is threadedly connected to a plurality of splicing tubes (13), and a plurality of through holes (12) are opened on the surface of the suction nozzle (11); a support block (7) is welded to the left side of the upper part of the transition tube (3), and a liquid level sensor (8) is installed at the bottom of the support block (7); a placement box (6) is welded to the surface of the transition tube (3), and a PLC controller (9) and a buzzer (10) are installed in the placement box (6); the output end of the PLC controller (9) is electrically connected to the sludge pump (1) and the buzzer (10) respectively, and the liquid level sensor (8) is electrically connected to the PLC controller (9).

2. A coal mine water prevention and control equipment according to claim 1, characterized in that: A thread groove (15) is formed on the top of a plurality of the splicing tubes (13), and a thread ring (16) is integrally cast on the bottom of a plurality of the splicing tubes (13). Another thread ring (16) is provided at the bottom of the suction nozzle (11) corresponding to the thread groove (15).

3. A coal mine water prevention and control equipment according to claim 1, characterized in that: A hollow disk (19) is welded to the inner wall surface of the transition tube (3), and a mounting hole (24) is provided at the center of the hollow disk (19) corresponding to the shaft rod (17), and a plurality of fan-shaped openings (23) are provided around the surface of the hollow disk (19), the mounting hole (24) and the shaft rod (17) are interlaced and connected, and a ball bearing is embedded and installed in the gap between the mounting hole (24) and the shaft rod (17).

4. A coal mine water prevention and control equipment according to claim 1, characterized in that: An air suction nozzle (14) is connected to the edge of the top surface of the transition tube (3), and the air suction nozzle (14) is connected to an external vacuum pump through an air suction pipeline.

5. The coal mine water prevention and control equipment according to claim 1, characterized in that: A connecting piece (4) is provided between the sludge pump (1) and the transition tube (3), and the connecting piece (4) is composed of a cross bar and an annular hoop, the cross bar of the connecting piece (4) is welded to the right side wall of the transition tube (3), and the annular hoop of the connecting piece (4) is fixedly connected to the outer wall of the shell of the sludge pump (1).

6. A coal mine water prevention and control equipment according to claim 3, characterized in that: The crushing knife group (20) is composed of a central ring and a plurality of strip-shaped blades (21) arranged around an outer ring thereof, and the crushing knife group (20) is located below the hollow disk (19).

7. The coal mine water prevention and control equipment according to claim 1, characterized in that: The right side wall of the transition tube (3) is provided with a connecting port (18) connected to the sludge discharge pipe (2); a circular flange is installed at one end of the sludge discharge pipe (2) away from the sludge pump (1), and the surface of the circular flange is fixedly connected to the transition tube (3) by bolts.

8. The coal mine water prevention and control equipment according to claim 1, characterized in that: The front end surface of the placement box (6) is opened, and a partition is welded transversely inside the placement box (6). The placement box (6) is equipped with a power supply (25), and the output end of the power supply (25) is electrically connected to the sludge pump (1), the PLC controller (9) and the buzzer (10), respectively. The PLC controller (9) is installed on the top surface of the inner partition of the placement box (6), and the buzzer (10) is installed on the bottom surface of the inner partition of the placement box (6).

9. The coal mine water prevention and control equipment according to claim 1, characterized in that: The lengths of the suction nozzle (11) and the plurality of splicing tubes (13) are adapted to the depth of the sedimentation tank in the coal mine.

10. The coal mine water prevention and control equipment according to claim 1, characterized in that: The liquid level sensor (8) is arranged in parallel with the transition tube (3), and the probe of the liquid level sensor (8) is arranged toward the liquid surface of the sedimentation tank in the coal mine.

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