Grouting device for coal mine water disaster prevention and control

Abstract

The utility model discloses a grouting device for coal mine water disaster prevention and control, which comprises a stirring tank, a stirring device and a clay slurry settling device, the clay slurry settling device comprises a coarse slurry tank, a sand tank and a fine slurry tank, the coarse slurry tank is positioned above the sand tank, and the fine slurry tank is positioned on the side of the sand tank. A baffle is arranged on the side, close to the refined pulp pool, of the coarse pulp pool in a liftable mode, the coarse pulp pool communicates with a clay pulping machine through a pipeline, and the refined pulp pool is connected with a stirring tank through a clay pulp conveying pump. A stirring device is arranged in the stirring tank, a discharging port is formed in the stirring tank, and the discharging port is connected with a grouting pump. The clay slurry sedimentation device is arranged, sedimentation is carried out in the coarse slurry pool, then the settled clay slurry is conveyed into the fine slurry pool through the downward moving baffle, sand discharging can be carried out on the clay slurry, the operation is simple and convenient, the device can be suitable for the clay cement slurry grouting technology, and meanwhile the clay slurry sedimentation device arranged in the device can effectively prevent the clay slurry from being blocked. And the device is suitable for a single-liquid cement slurry grouting process.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine water hazard prevention and control, in particular to a grouting device used for coal mine water hazard prevention and control. Background Art

[0002] Coal mine water hazard prevention and control requires the use of grouting technology to inject slurry into coal seams or rock formations to seal water sources, reinforce strata, improve coal mine safety, reduce the incidence of coal mine accidents, and ensure the safety and stability of coal production. Therefore, grouting equipment is required.

[0003] In the prior art, a utility model patent with patent number CN202321566348.8 discloses a grouting device for coal mine water hazard prevention and control, including a cart, on the top of which a mixing barrel and a grouting pump are fixed in sequence from near to far, and a mixing assembly for fully mixing the slurry is arranged in the mixing barrel, the mixing assembly includes a motor fixed on the top of the mixing barrel, the output shaft of the motor passes through a fixed sleeve at the top of the inner wall of the mixing barrel, a movable column is provided, a fixed box is fixed at the bottom of the movable column, and a transmission wheel is provided on the top of the inner wall of the fixed box through an axis fixed sleeve.

[0004] The above patent provides a grouting device for preventing and controlling water hazards in coal mines that uses a stirring component and a cleaning component. By starting the motor, the first scraper fixed to the bottom of the fixed bar and the second scraper fixed to the outer wall of the first scraper are rotated, so that the slurry on the inner wall of the mixing barrel can be effectively cleaned; however, the grouting technology for preventing and controlling water hazards in coal mines includes a single-liquid cement slurry grouting process and a clay cement slurry grouting process, and the clay cement slurry grouting process requires sand removal from the clay slurry compared to the single-liquid cement slurry grouting process, while the above grouting device lacks a device for removing sand from the clay slurry and is only applicable to the single-liquid cement slurry grouting process; the applicability is not strong; and further improvement is needed. Utility Model Content

[0005] The purpose of the utility model is to provide a grouting device for coal mine water hazard prevention and control, aiming to improve the problem that the existing grouting device lacks a device for removing sand from clay slurry, resulting in the device being only suitable for single-liquid cement slurry grouting process and cannot be applied to clay cement slurry grouting process.

[0006] The utility model is implemented as follows: a grouting device for preventing and controlling water hazards in coal mines, comprising a stirring tank and a stirring device, and also comprising a clay slurry precipitation device, wherein the clay slurry precipitation device comprises a coarse slurry pool, a sand pool and a refined slurry pool, wherein the coarse slurry pool is located above the sand pool, and the refined slurry pool is located on the side of the sand pool, and a baffle is provided on a side of the coarse slurry pool close to the refined slurry pool, which can be lifted and lowered, the coarse slurry pool is connected to a clay pulping machine through a pipeline, and the refined slurry pool is connected to the stirring tank through a clay slurry delivery pump; the stirring tank is provided with a stirring device, and the stirring tank is provided with a discharge port, and the discharge port is connected with a grouting pump.

[0007] Preferably, a sliding groove extending between the sand pool and the refined pulp pool is provided on the side of the coarse pulp pool close to the refined pulp pool, and the baffle is slidably arranged in the sliding groove.

[0008] Preferably, the baffle comprises a guide plate, and the upper end of the baffle is provided with a guide plate biased toward the refined plasma pool; the guide plate is covered on the sliding groove.

[0009] Preferably, the clay slurry sedimentation device further comprises a sewage discharge hole and a sand discharge port, the bottom side of the sliding trough is provided with a sewage discharge hole; the bottom of the coarse slurry pool is provided with a sand discharge port facing the sand pool.

[0010] Preferably, a threaded sleeve is provided at the upper end of the baffle side, a screw shaft matched with the threaded sleeve is vertically provided on the side of the baffle, a first motor is provided at one end of the screw shaft, and the threaded sleeve is threadedly mounted on the screw shaft.

[0011] Preferably, the clay slurry delivery pump includes an input pipe and an output pipe; the suction end of the clay slurry delivery pump is connected to the input pipe, and the discharge end is connected to the output pipe; the mixing tank includes a feed hopper, and the end of the input pipe away from the clay slurry delivery pump is arranged inside the refined slurry pool, and the end of the output pipe away from the clay slurry delivery pump is arranged in the feed hopper.

[0012] Preferably, the stirring device includes a stirring shaft and a second motor; a plurality of stirring shafts are sequentially arranged on the stirring device along its circumferential direction, the lower ends of the stirring shafts are extended and arranged inside the stirring tank, and sub gears are respectively arranged on the upper ends; a main gear is arranged on the output shaft of the second motor, and the plurality of sub gears are all meshed with the main gear.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model sets a clay slurry sedimentation device to carry out sedimentation in a coarse slurry pool, and then transports the precipitated clay slurry to a fine slurry pool through a downward moving baffle plate, so as to discharge sand from the clay slurry, which is simple and convenient, so that the device can be applied to the clay cement slurry grouting process. At the same time, the clay slurry sedimentation device set in the device does not affect the device's application to the single-liquid cement slurry grouting process.

[0015] 2. The utility model can conveniently discharge the mortar settled in the clay slurry by arranging the sand pool and the sand discharge port, and will not affect the normal use of the clay slurry precipitation device.

[0016] 3. The utility model provides a plurality of stirring shafts on the circumference of the stirring device, so that the plurality of stirring shafts can stir at the same time, thereby increasing the stirring range and improving the stirring efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the connection structure of each structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the clay slurry precipitation device of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the baffle of the utility model;

[0020] Figure 4 This utility model Figure 1 The structural diagram at A in the middle;

[0021] Figure 5 It is a structural schematic diagram of the stirring device of the utility model.

[0022] In the figure: 1. Clay slurry sedimentation device; 101. Coarse slurry pool; 102. Sand pool; 103. Fine slurry pool; 104. Baffle; 105. First motor; 106. Screw shaft; 107. Threaded sleeve; 108. Guide plate; 109. Sliding groove; 120. Drain hole; 121. Sand outlet; 2. Clay slurry delivery pump; 201. Input pipe; 202. Output pipe; 3. Mixing tank; 301. Feed hopper; 302. Discharge port; 4. Mixing device; 401. Mixing shaft; 402. Second motor; 403. Main gear; 404. Sub gear. DETAILED DESCRIPTION

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The following is a further description with reference to the accompanying drawings and specific embodiments: Example 1

[0025] like Figure 1-Figure 4As shown, a grouting device for preventing and controlling water hazards in coal mines includes a stirring tank 3 and a stirring device 4, and also includes a clay slurry precipitation device 1. The clay slurry precipitation device 1 includes a coarse slurry pool 101, a sand pool 102 and a fine slurry pool 103. The coarse slurry pool 101 is located above the sand pool 102. A sand discharge port 121 facing the sand pool 102 is provided at the bottom of the coarse slurry pool 101, and the precipitated mortar is discharged into the sand pool 102 through the sand discharge port 121. The refined slurry pool 103 is located on the side of the sand pool 102. By setting the coarse slurry pool 101 and the refined slurry pool 103, the clay slurry can be precipitated, and the precipitated clay slurry can be directly transported to the refined slurry pool 103 on the side of the coarse slurry pool 101, which is easy to operate. A baffle 104 can be raised and lowered on one side of the coarse slurry pool 101 close to the refined slurry pool 103. By setting the baffle 104, a gap can be formed on the side of the coarse slurry pool 101 by lowering the baffle 104, so that the upper layer of the clay slurry automatically flows into the refined slurry pool 103, and during the flow, the precipitated sand mortar will not be disturbed. A sliding groove 109 extending between the sand pool 102 and the refined pulp pool 103 is arranged on the side of the coarse pulp pool 101 near the refined pulp pool 103. The clay slurry sedimentation device 1 also includes a drain hole 120 and a sand discharge port 121. The bottom side of the sliding groove 109 is provided with a drain hole 120. By setting the drain hole 120, when impurities enter the sliding groove 109, they can be directly cleaned and discharged through the drain port. The baffle 104 is slidably arranged in the sliding groove 109. The baffle 104 includes a guide plate 108. The upper end of the baffle 104 is provided with a guide plate 108 biased towards the refined pulp pool 103; the guide plate 108 is covered on the sliding groove 109, and a threaded sleeve 107 is arranged on the upper end of the side of the baffle 104. A screw shaft 106 adapted to the threaded sleeve 107 is vertically arranged on the side of the baffle 104. A first motor 105 is arranged at one end of the screw shaft 106. The threaded sleeve 107 is threadedly installed on the screw shaft 106. The screw shaft 106 is driven to rotate by the first motor 105, and then the screw shaft 106 rotates to drive the threaded sleeve 107 to move downward, and drive the baffle 104 to move downward.

[0026] like Figure 1 and Figure 5As shown, the coarse pulp pool 101 is connected to the clay pulping machine through a pipeline, and the refined pulp pool 103 is connected to the mixing tank 3 through the clay slurry delivery pump 2; the clay slurry delivery pump 2 includes an input pipe 201 and an output pipe 202; the suction end of the clay slurry delivery pump 2 is connected to the input pipe 201, and the discharge end is connected to the output pipe 202; the mixing tank 3 includes a feed hopper 301, and the end of the input pipe 201 away from the clay slurry delivery pump 2 is arranged inside the refined pulp pool 103, and the end of the output pipe 202 away from the clay slurry delivery pump 2 is arranged in the feed hopper 301. The stirring tank 3 is provided with a stirring device 4, which includes a stirring shaft 401 and a second motor 402; the stirring device 4 is provided with a plurality of stirring shafts 401 in sequence along its circumferential direction, the lower end of the stirring shaft 401 is extended and arranged inside the stirring tank 3, and the upper end is provided with a sub-gear 404; the output shaft of the second motor 402 is provided with a main gear 403, and the plurality of sub-gears 404 are all meshed with the main gear 403, the main gear 403 is driven to rotate by the second motor 402, the sub-gear 404 is driven to rotate by the main gear 403, and the stirring shaft 401 is driven to rotate. The stirring tank 3 is provided with a discharge port 302, and the discharge port 302 is connected to a grouting pump. Example 2

[0027] like Figure 1-Figure 4 As shown, a grouting device for preventing and controlling water hazards in coal mines includes a stirring tank 3 and a stirring device 4, and also includes a clay slurry precipitation device 1, the clay slurry precipitation device 1 includes a coarse slurry pool 101, a sand pool 102 and a refined slurry pool 103, the coarse slurry pool 101 is located above the sand pool 102, and a sand discharge port 121 facing the sand pool 102 is arranged at the bottom of the coarse slurry pool 101. The refined slurry pool 103 is located on the side of the sand pool 102, and a baffle 104 can be lifted and lowered on one side of the coarse slurry pool 101 close to the refined slurry pool 103, and a sliding groove 109 extending between the sand pool 102 and the refined slurry pool 103 is arranged on the side of the coarse slurry pool 101 close to the refined slurry pool 103, and the clay slurry precipitation device 1 also includes a sewage discharge hole 120 and a sand discharge port 121, and a sewage discharge hole 120 is arranged on the bottom side of the sliding groove 109. The baffle 104 is slidably arranged in the sliding groove 109, and the baffle 104 includes a guide plate 108. The upper end of the baffle 104 is provided with a guide plate 108 biased towards the refined pulp pool 103; the guide plate 108 is covered on the sliding groove 109, and a threaded sleeve 107 is arranged on the upper end of the side of the baffle 104. A screw shaft 106 adapted to the threaded sleeve 107 is vertically arranged on the side of the baffle 104, and a first motor 105 is arranged at one end of the screw shaft 106, and the threaded sleeve 107 is threadedly installed on the screw shaft 106.

[0028] like Figure 1 and Figure 5As shown, the rough pulp pool 101 is connected to the clay pulping machine through a pipeline, and the refined pulp pool 103 is connected to the stirring tank 3 through the clay slurry delivery pump 2; the clay slurry delivery pump 2 includes an input pipe 201 and an output pipe 202; the suction end of the clay slurry delivery pump 2 is connected to the input pipe 201, and the discharge end is connected to the output pipe 202; the stirring tank 3 includes a feed hopper 301, and the end of the input pipe 201 away from the clay slurry delivery pump 2 is arranged inside the refined pulp pool 103, and the end of the output pipe 202 away from the clay slurry delivery pump 2 is arranged in the feed hopper 301. The stirring tank 3 is provided with a stirring device 4, and the stirring device 4 includes a stirring shaft 401 and a second motor 402; a plurality of stirring shafts 401 are sequentially arranged on the stirring device 4 along its circumferential direction, the lower end of the stirring shaft 401 is extended and arranged inside the stirring tank 3, and the upper end is respectively provided with a sub gear 404; a main gear 403 is arranged on the output shaft of the second motor 402, and the plurality of sub gears 404 are all meshed with the main gear 403. A discharge port 302 is provided in the mixing tank 3, and a grouting pump is connected to the discharge port 302.

[0029] The working principle of the utility model is as follows: the slurry in the clay pulping machine is transported to the rough slurry pool 101, and then precipitated in the rough slurry pool 101. When the precipitation is completed, the first motor 105 drives the lead screw shaft 106 to rotate, and then the lead screw shaft 106 rotates to drive the threaded sleeve 107 to move downward, and drives the baffle 104 to move downward. During the downward movement of the baffle 104, the precipitated slurry in the rough slurry pool 101 is transported from the upper layer to the refined slurry pool 103. At the same time, during the transportation process, the guide plate 108 can guide the slurry to avoid The sliding groove 109 flows into the refined slurry pool 103. When the upper layer of clay slurry in the coarse slurry pool 101 is transported, the remaining mortar is discharged into the sand pool 102 through the sand discharge port 121. Then, the precipitated clay slurry can be transported to the mixing tank 3 through the clay slurry transport pump 2. The main gear 403 is driven to rotate by the second motor 402, and the sub gear 404 is driven to rotate by the main gear 403. Then, the stirring shaft 401 is driven to rotate, and cement can be continuously added to the mixing tank for stirring. Then, the coal mine water hazard control is carried out through the grouting pump.

[0030] In summary, the utility model sets a clay slurry sedimentation device 1 to carry out sedimentation in a coarse slurry pool 101, and then transports the precipitated clay slurry to a fine slurry pool 103 through a downward baffle plate 104, so as to discharge sand from the clay slurry, which is simple and convenient, so that the device can be applied to a clay cement slurry grouting process. At the same time, the clay slurry sedimentation device 1 set in the device does not affect the device being applicable to a single-liquid cement slurry grouting process; by setting a sand pool 102 and a sand discharge port 121, the mortar precipitated in the clay slurry can be conveniently discharged and processed without affecting the normal use of the clay slurry sedimentation device 1; by arranging a plurality of stirring shafts 401 circumferentially in the stirring device 4, the plurality of stirring shafts 401 can be stirred at the same time, thereby increasing the stirring range and improving the stirring efficiency.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grouting device for preventing and controlling water damage in coal mines, comprising a stirring tank (3) and a stirring device (4), characterized in that: The invention also comprises a clay slurry precipitation device (1), the clay slurry precipitation device (1) comprising a coarse slurry pool (101), a sand pool (102) and a refined slurry pool (103), the coarse slurry pool (101) being located above the sand pool (102), the refined slurry pool (103) being located on the side of the sand pool (102), a baffle (104) being liftably provided on a side of the coarse slurry pool (101) close to the refined slurry pool (103), the coarse slurry pool (101) being connected to a clay slurry making machine via a pipeline, the refined slurry pool (103) being connected to a stirring tank (3) via a clay slurry delivery pump (2); a stirring device (4) being provided in the stirring tank (3), a discharge port (302) being provided in the stirring tank (3), and a grouting pump being connected to the discharge port (302).

2. A grouting device for coal mine water hazard prevention according to claim 1, characterized in that: A sliding groove (109) extending between the sand pool (102) and the refined pulp pool (103) is provided on the side of the rough pulp pool (101) close to the refined pulp pool (103), and the baffle (104) is slidably disposed in the sliding groove (109).

3. A grouting device for coal mine water hazard prevention according to claim 2, characterized in that: The baffle (104) comprises a guide plate (108); the upper end of the baffle (104) is provided with a guide plate (108) biased towards the refined plasma pool (103); the guide plate (108) is covered on the sliding groove (109).

4. A grouting device for coal mine water hazard prevention according to claim 2, characterized in that: The clay slurry sedimentation device (1) further comprises a sewage discharge hole (120) and a sand discharge port (121); the sewage discharge hole (120) is arranged on the bottom side of the sliding groove (109); and the bottom of the rough slurry pool (101) is provided with a sand discharge port (121) facing the sand pool (102).

5. The grouting device for coal mine water hazard prevention according to claim 1, characterized in that: A threaded sleeve (107) is arranged at the upper end of the side surface of the baffle (104), a screw shaft (106) adapted to the threaded sleeve (107) is vertically arranged on the side of the baffle (104), a first motor (105) is arranged at one end of the screw shaft (106), and the threaded sleeve (107) is threadedly mounted on the screw shaft (106).

6. A grouting device for coal mine water hazard prevention according to claim 1, characterized in that: The clay slurry delivery pump (2) comprises an input pipe (201) and an output pipe (202); the suction end of the clay slurry delivery pump (2) is connected to the input pipe (201), and the discharge end is connected to the output pipe (202); the stirring tank (3) comprises a feed hopper (301), an end of the input pipe (201) away from the clay slurry delivery pump (2) is arranged inside the refined pulp pool (103), and an end of the output pipe (202) away from the clay slurry delivery pump (2) is arranged in the feed hopper (301).

7. A grouting device for coal mine water hazard prevention according to claim 1, characterized in that: The stirring device (4) comprises a stirring shaft (401) and a second motor (402); a plurality of stirring shafts (401) are sequentially arranged on the stirring device (4) along its circumferential direction; the lower ends of the stirring shafts (401) are extended and arranged inside the stirring tank (3); and the upper ends are respectively provided with sub-gears (404); a main gear (403) is arranged on the output shaft of the second motor (402), and the plurality of sub-gears (404) are all meshed with the main gear (403).

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