Water control device for coal mine

Abstract

The utility model belongs to the technical field of coal mine water control, and particularly relates to a coal mine water control device which comprises a mixing box and a driving motor, two through grooves are formed in the top of the mixing box, a water injection connecting pipe and a batch hopper are arranged at the tops of the two through grooves respectively, and a first guide pipe and a second guide pipe are arranged at the bottoms of the two through grooves respectively. The first guide pipe and the second guide pipe are both in an inclined state. The convenience of solid material proportioning can be improved through the batch hopper, the first guide pipe and the second guide pipe are in an inclined state, so that solid materials and water are preliminarily mixed when entering the mixing box, and the materials can be further uniformly mixed by centrifugal force through rotation of the rotating disc, so that the mixing efficiency is improved. Therefore, the materials can be mixed in advance before being stirred, the situation of coal gangue layering caused by agglomeration due to frequent collision of the coal gangue due to stirring is reduced, and the uniformity of slurry is improved.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine water control technology, and specifically relates to a coal mine water control device. Background Technology

[0002] Coal mines have complex underground working environments, and water hazards are one of the main threats to coal mine safety. If water control is inadequate, a large amount of water will quickly rush into the underground working area in the event of a water inrush accident, flooding roadways and mining faces, threatening the safety of workers. Therefore, effective coal mine water control measures are needed to reduce the probability of water inrush accidents. There are many types of coal mine water control devices, including water detection and release devices, drainage devices, water blocking devices, water interception devices, and monitoring and early warning devices. Among them, water blocking devices mainly include mixing boxes, grouting pipes, and grouting heads. Grouting materials are mixed and prepared in the mixing box, and the grouting pump delivers the grout to the grouting head through the grouting pipe. The grouting head then injects the grout into the rock fissures, cavities, and other locations that need to be sealed, thereby achieving the purpose of water blocking.

[0003] Coal mining, mine tunneling, and coal washing inevitably produce solid waste such as coal gangue. Coal gangue is a relatively hard, gray-black rock with low carbon content that is associated with coal. The disposal methods of surface accumulation and tunnel burial of coal gangue pose many safety hazards, and the disposal of coal gangue has become an obstacle to mine production. In addition, grouting work in coal mine goaf generally uses readily available loess material. After the loess is mixed with water to make grout, it is transported to the goaf from the surface or underground grouting station. Over-exploitation of loess will damage the surrounding ecological environment. Therefore, using crushed and ground coal gangue to prepare grouting material to replace loess can help solve the problems of coal gangue disposal, grouting material, and environment at the same time.

[0004] When using coal gangue instead of loess to prepare grouting materials, the frequent collisions between coal gangue particles during stirring can easily cause them to attract each other and agglomerate, forming large particle clusters. In addition, the high density of coal gangue particles can easily lead to sedimentation and stratification, affecting the uniformity of the grout. Therefore, it is necessary to improve the uniformity of the mixing of coal gangue and other materials before stirring. Utility Model Content

[0005] This utility model provides a coal mine water control device, which can improve the convenience of solid material proportioning through the batching hopper. Since the guide pipe one and guide pipe two are inclined, the solid material and water will be initially mixed when entering the mixing box. The rotation of the turntable can use centrifugal force to further mix the materials evenly, which is beneficial to improving the uniformity of the slurry.

[0006] This utility model provides the following technical solution: it includes a mixing tank and a drive motor. The top of the mixing tank has two through slots, and the top of the two through slots is respectively provided with a water injection connection pipe and a feeding hopper. The bottom of the two through slots is respectively provided with a guide pipe one and a guide pipe two. Both guide pipe one and guide pipe two are inclined. The inside of the feeding hopper is divided into several material troughs of different sizes by several partitions. A support plate is slidably connected inside the feeding hopper. The bottom of the inner cavity of the mixing tank is rotatably connected to a rotating shaft. The outside of the rotating shaft is provided with a spiral stirring blade. The top of the rotating shaft is provided with a turntable. The top of the turntable is provided with several fixing strips. The bottom of the outside of the mixing tank is provided with a grouting connection pipe.

[0007] The mixing box has several support legs at its bottom, the two through slots are symmetrical to each other, and the water injection connection pipe is located on one side of the bottom of the batching hopper.

[0008] One of the channels is connected to the water injection connection pipe and the first guide pipe, and the other channel is connected to the mixing hopper and the second guide pipe.

[0009] The first guide tube and the second guide tube are symmetrical to each other, and the first guide tube and the second guide tube are located above the turntable.

[0010] The batching hopper has a connecting groove on one side, and the support plate is slidably connected to the connecting groove.

[0011] The support plate has an adjusting rod on one side, which is located outside the mixing hopper and is larger than the connecting groove.

[0012] The turntable has a conical block at its top, and several fixing strips are located on the outer bottom of the conical block.

[0013] The beneficial effects of this utility model are: the batching hopper can improve the convenience of solid material proportioning, and since the guide pipe one and guide pipe two are inclined, the solid materials and water will be initially mixed when entering the mixing box. The rotation of the turntable can use centrifugal force to further mix the materials evenly. Thus, the materials can be mixed in advance before stirring, reducing the situation of coal gangue agglomeration caused by frequent collisions due to stirring, which is conducive to improving the uniformity of the slurry.

[0014] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a top view of the structure of this utility model;

[0017] Figure 3 This is a side view of the structure of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the batching hopper in this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the rotating shaft and turntable in this utility model;

[0020] Figure 6 This is a cross-sectional structural diagram of the batching hopper in this utility model;

[0021] Figure 7 In this utility model Figure 6 A schematic diagram of the motion dynamics;

[0022] In the diagram: 1. Mixing bin; 11. Support leg; 12. Through groove; 13. Water injection connection pipe; 14. Guide pipe one; 15. Guide pipe two; 16. Drive motor; 17. Grouting connection pipe; 2. Batching hopper; 21. Partition plate; 22. Material trough; 23. Connecting groove; 24. Support plate; 241. Adjusting rod; 3. Rotating shaft; 31. Spiral mixing blade; 4. Turntable; 41. Conical block; 42. Fixing strip. Detailed Implementation

[0023] Please see Figures 1-7 The present invention provides the following technical solution: including a mixing box 1 and a drive motor 16, the top of the mixing box 1 has two through slots 12, the top of the two through slots 12 is respectively provided with a water injection connection pipe 13 and a batching hopper 2, the bottom of the two through slots 12 is respectively provided with a guide pipe 14 and a guide pipe 2 15, both of which are inclined, the inside of the batching hopper 2 is divided into several material troughs 22 of different sizes by several partitions 21, the inside of the batching hopper 2 is slidably connected with a support plate 24, the bottom of the inner cavity of the mixing box 1 is rotatably connected with a rotating shaft 3, the outside of the rotating shaft 3 is provided with a spiral stirring blade 31, the top of the rotating shaft 3 is provided with a turntable 4, the top of the turntable 4 is provided with several fixing strips 42, and the bottom of the outside of the mixing box 1 is provided with a grouting connection pipe 17.

[0024] This embodiment includes a mixing tank 1 and a drive motor 16. The drive motor 16 is fixedly connected to the bottom of the mixing tank 1. Two through slots 12 are symmetrically positioned on the top of the mixing tank 1. A water injection pipe 13 and a mixing hopper 2 are respectively located at the top of each through slot 12. Both the water injection pipe 13 and the mixing hopper 2 are fixedly connected to the mixing tank 1. When the water injection pipe is connected to the water injection pipe 13, water can be injected into the mixing tank 1. Solid materials can be proportioned inside the mixing hopper 2. A guide pipe 14 and a guide pipe 2 15 are respectively located at the bottom of each through slot 12. Guide pipe 14 and guide pipe 2 15 are fixedly connected to the mixing tank 1. The dimensions of guide pipe 14 and guide pipe 2 15 are the same. Both guide pipe 14 and guide pipe 2 are inclined. When the material flows downward from the inside of guide pipe 14 and guide pipe 2 15, the two parts of the material will be initially mixed during the falling process. The inside of the batching hopper 2 is divided into several material troughs 22 of different sizes by several baffles 21. When preparing the slurry, the solid mass fraction in the slurry is 50%, and the mass fractions of coal gangue, fly ash and desulfurized gypsum in the total solids are 60%, 10% and 30% respectively, sodium lignosulfonate water-reducing agent with a mass fraction of 0.5% of the total solids is added. The resulting coal gangue-based grouting slurry has similar fluidity and yield stress to general loess slurry, and the viscosity coefficient is slightly higher than that of loess slurry. Therefore, coal gangue can be used to replace loess. The several material troughs 22 The size ratio is the same as that between coal gangue, fly ash, desulfurized gypsum, and sodium lignosulfonate water-reducing agent, which facilitates the proportioning process. A support plate 24 is slidably connected inside the batching hopper 2. The support plate 24 is horizontal and located at the bottom of several partitions 21. The volume of several material troughs 22 is fixed by the support plate 24 and the partitions 21. A rotating shaft 3 is rotatably connected to the bottom of the inner cavity of the mixing box 1. A spiral stirring blade 31 is provided on the outer side of the rotating shaft 3. When the material enters the inner cavity of the mixing box 1, the material can be stirred and mixed by the rotation of the rotating shaft 3 and the spiral stirring blade 31. A turntable 4 is provided on the top of the rotating shaft 3. The turntable 4 is fixedly connected to the rotating shaft 3 and is horizontal. When the rotating shaft 3 rotates, the rotating shaft 3 rotates... The turntable 4 will rotate synchronously. Several fixing bars 42 are centrally symmetrically arranged on the top of the turntable 4. Water and solid materials flowing downwards from the guide pipe 14 and guide pipe 2 15 will fall to the top of the turntable 4 after initial mixing. When the turntable 4 rotates, the centrifugal force generated by its rotation will throw the material on top of the turntable 4 outwards. During this throwing process, the material is dispersed, further mixing it and improving the uniformity of the mixture. A grouting connection pipe 17 is located at the bottom outer side of the mixing tank 1. When the grouting pipe is connected to the grouting connection pipe 17, the grout can be drawn out of the mixing tank 1 by the grouting pump. The batching hopper 2 improves the convenience of solid material proportioning.Because guide pipes 14 and 15 are inclined, the solid materials and water will initially mix upon entering the mixing tank 1. The rotation of turntable 4 utilizes centrifugal force to further homogenize the materials. This pre-mixing of materials before agitation reduces the likelihood of coal gangue agglomeration due to frequent collisions during agitation, thus improving the uniformity of the slurry.

[0025] The bottom of the mixing box 1 is provided with several support legs 11, two through slots 12 are symmetrical to each other, and the water injection connection pipe 13 is located on one side of the bottom of the batching hopper 2; the water injection connection pipe 13 and the batching hopper 2 will not interfere with each other, and the bottom of the batching hopper 2 is in an inclined state.

[0026] One of the channels 12 is connected to the water injection connection pipe 13 and the guide pipe 14, and the other channel 12 is connected to the batching hopper 2 and the guide pipe 2 15. When the water injection pipe is connected to the water injection connection pipe 13, water will enter the interior of the mixing box 1 through the water injection connection pipe 13, the channel 12 and the guide pipe 14. When the solid material is at the bottom of the batching hopper 2, by sliding the support plate 24 outward, the material in several material troughs 22 can flow downward and enter the interior of the mixing box 1 through the channel 12 and the guide pipe 2 15.

[0027] Guide tube 14 and guide tube 2 15 are symmetrical to each other and are located above turntable 4. Guided by guide tube 14 and guide tube 2 15, solid materials and water will be initially mixed at the top of turntable 4, and the initially mixed materials will continue to fall to the top of turntable 4.

[0028] A connecting groove 23 is provided on one side of the batching hopper 2, and the support plate 24 is slidably connected to the connecting groove 23. The dimensions of the connecting groove 23 and the support plate 24 are matched. When the support plate 24 is located inside the batching hopper 2, it can support the material. When the support plate 24 slides outward, the material in several material troughs 22 can fall downward.

[0029] An adjusting rod 241 is provided on one side of the support plate 24. The adjusting rod 241 is located outside the feeding hopper 2 and its size is larger than that of the connecting groove 23. The adjusting rod 241 facilitates the pulling of the support plate 24, thereby adjusting the support plate 24 to support or move the material.

[0030] The top of the turntable 4 is provided with a conical block 41, and several fixing strips 42 are located on the bottom outer side of the conical block 41. The conical block 41 can prevent the material from staying in the middle position of the turntable 4, while the fixing strips 42 can make the material move as the turntable 4 rotates.

[0031] The working principle and usage process of this utility model are as follows: First, coal gangue, fly ash, desulfurized gypsum, and sodium lignosulfonate water-reducing agent are poured into several material troughs 22 with different proportions. Then, the water injection pipe is connected to the water injection connection pipe 13, and the support plate 24 is pulled outwards. Simultaneously, water is injected into the mixing tank 1 through the water injection pipe 14. The solid materials inside the batching hopper 2 enter the mixing tank 1 through the guide pipe 2 15. The solid materials and water are initially mixed at the top of the turntable 4. Then, the materials fall to the top of the turntable 4. The drive motor 16 causes the rotating shaft 3 and the spiral stirring blade 31 to rotate. At the same time, the turntable 4 rotates synchronously. When the turntable 4 rotates, the centrifugal force generated by the rotation of the turntable 4 throws the materials outwards, further mixing them. The mixed materials continue to fall into the stirring range of the spiral stirring blade 31, where the materials are completely mixed through the stirring of the spiral stirring blade 31.

Claims

1. A coal mine water control device, comprising a mixing tank (1) and a drive motor (16), characterized in that: The mixing tank (1) has two through slots (12) on its top. The top of the two through slots (12) is provided with a water injection connection pipe (13) and a batching hopper (2). The bottom of the two through slots (12) is provided with a guide pipe one (14) and a guide pipe two (15). The guide pipe one (14) and the guide pipe two (15) are both inclined. The inside of the batching hopper (2) is divided into several material troughs (22) of different sizes by several partitions (21). The inside of the batching hopper (2) is slidably connected with a support plate (24). The bottom of the inner cavity of the mixing tank (1) is rotatably connected with a rotating shaft (3). The outside of the rotating shaft (3) is provided with a spiral stirring blade (31). The top of the rotating shaft (3) is provided with a turntable (4). The top of the turntable (4) is provided with several fixing strips (42). The bottom of the outside of the mixing tank (1) is provided with a grouting connection pipe (17).

2. The coal mine water control device according to claim 1, characterized in that: The bottom of the mixing box (1) is provided with several support legs (11), the two through slots (12) are symmetrical to each other, and the water injection connection pipe (13) is located on one side of the bottom of the batching hopper (2).

3. A coal mine water control device according to claim 2, characterized in that: One of the channels (12) is connected to the water injection connection pipe (13) and the first guide pipe (14), and the other channel (12) is connected to the mixing hopper (2) and the second guide pipe (15).

4. A coal mine water control device according to claim 3, characterized in that: The first guide tube (14) and the second guide tube (15) are symmetrical to each other, and the first guide tube (14) and the second guide tube (15) are located above the turntable (4).

5. A coal mine water control device according to claim 4, characterized in that: A connecting groove (23) is provided on one side of the batching hopper (2), and the support plate (24) is slidably connected to the connecting groove (23).

6. A coal mine water control device according to claim 5, characterized in that: An adjusting rod (241) is provided on one side of the support plate (24). The adjusting rod (241) is located outside the feeding hopper (2) and the size of the adjusting rod (241) is larger than that of the connecting groove (23).

7. A coal mine water control device according to claim 6, characterized in that: The top of the turntable (4) is provided with a conical block (41), and several fixing strips (42) are located on the bottom outer side of the conical block (41).

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