Underground coal cleaning equipment

Abstract

The utility model relates to downhole coal cleaning equipment which comprises a scraper conveyor, a crushing device, a pumping and discharging pump and dehydration equipment. The scraper conveyor is installed at the coal falling position of the shaft bottom, and an outlet of the scraper conveyor is in butt joint with a feeding port of the crushing device and used for conveying falling coal to the crushing device. The crushing device is arranged above the sedimentation tank at the bottom of the well and is used for crushing the conveyed falling coal at the bottom of the well and discharging the crushed falling coal into the sedimentation tank; the pumping and discharging pump is placed in the sedimentation tank and used for pumping and discharging crushed dropped coal into the dehydration equipment, a discharging port of the pumping and discharging pump is connected with a feeding port of the dehydration equipment through a material conveying pipe, and the dehydration equipment is installed on the upper-layer working face of the well bottom. According to the utility model, the automatic line production of crushing, pumping, stirring, dehydrating and loading of the coal falling at the bottom of the well can be realized, and the whole equipment has the advantages of simple structure, large treatment capacity, high efficiency, no need of manual operation at the bottom of the well and high safety.

Description

Technical Field

[0001] The utility model relates to coal slime cleaning equipment, in particular to coal cleaning equipment at the bottom of a well, and belongs to the field of mining equipment. Background Art

[0002] Coal mine shafts are the main entrances and exits of coal mines. During the hoisting and loading and unloading process, raw coal often spills to the shaft bottom. To ensure safe production in the coal mine, spilled coal from the shaft needs to be cleaned up regularly. Existing methods for cleaning fallen coal from the shaft often require manual labor to enter the shaft and load the coal onto a mine car. This is labor-intensive and poses a harsh underground environment, resulting in poor safety.

[0003] In addition, when mechanical cleaning of fallen coal is usually carried out, manual operation is required at the bottom of the well, which is prone to safety accidents. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a coal cleaning device at the bottom of a well, which can solve the above problems.

[0005] The utility model is realized through the following technical solutions: coal cleaning equipment at the bottom of the well, including a scraper conveyor, a crushing device, a suction pump and a dewatering device; the scraper conveyor is installed at the coal dropping place at the bottom of the well, the scraper conveyor is provided with a scraper conveyor outlet, the crushing device is provided with a crushing device feed port, the scraper conveyor outlet is connected to the crushing device feed port, and is used to transport the coal to the crushing device; the crushing device is arranged above the sedimentation tank at the bottom of the well, and is used to crush the transported coal from the bottom of the well, and discharge the crushed coal into the sedimentation tank; the suction pump is placed in the sedimentation tank, and is used to pump the crushed coal into the dewatering device, and the discharge port of the suction pump is connected to the feed port of the dewatering device through a material conveying pipe, and the dewatering device is installed on the upper working surface of the bottom of the well.

[0006] Furthermore, the dehydration equipment includes a solid-liquid separator and a filter press; the discharge port of the suction pump is connected to the feed port of the solid-liquid separator through a material conveying pipe, and the discharge port of the solid-liquid separator is connected to the feed port of the filter press.

[0007] Furthermore, the solid-liquid separator includes a coarse separator and a buffer container. The coarse separator is arranged on the top of the buffer container. The water outlet of the buffer container is connected to the feed port of the filter press. A stirring device is provided in the buffer container.

[0008] Furthermore, a filter press pump is provided between the water outlet of the buffer container and the feed inlet of the filter press.

[0009] Further, the dehydration device further includes a PLC controller, and the solid-liquid separator and the filter press are controlled by the PLC controller.

[0010] Further, water injection ports are provided at both the feed inlet and the discharge outlet of the crushing device.

[0011] Further, it further includes at least one high-definition camera for monitoring the coal slime situation at the bottom of the well and the working conditions of the equipment.

[0012] Further, it further includes an explosion-proof computer which is installed on the upper working face at the bottom of the well, and the explosion-proof computer is electrically connected to the PLC controller.

[0013] Due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows: It can realize the automated flow operation of crushing, pumping, stirring, dehydration, and loading of the coal falling at the bottom of the well. The whole set of equipment has a simple structure, a large processing capacity, and high efficiency; since a camera is installed at the bottom of the well, the coal falling situation at the bottom of the well and the working conditions of the equipment at the bottom of the well can be observed from the explosion-proof computer on the upper working face at the bottom of the well, avoiding manual inspection at the bottom of the well and having high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the present utility model for the working face at the bottom of the well.

[0015] Figure 2 It is a schematic structural diagram of the dehydration device for the upper working face at the bottom of the well.

[0016] Figure 3 For Figure 2 front view of

[0017] Figure 4 It is a process flow chart of the present utility model.

[0018] In the figure: A. vertical shaft; M. coal falling at the bottom of the well; B. sedimentation tank; D. bottom layer of the well; L. upper working face at the bottom of the well; 1. scraper conveyor; 101. outlet of the scraper conveyor; 2. crushing device; 201. feed inlet of the crushing device; 202. discharge outlet of the crushing device; 3. pumping and discharging pump; 4. material conveying pipe; 5. solid-liquid separator; 501. rough separator; 502. buffer container; 6. filter press; 7. belt conveyor; 8. filter press pump; 9. PLC controller; 10. high-definition camera. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be further described below with reference to the drawings and embodiments. Embodiment

[0020] As Figures 1-3As shown in the figure, the coal cleaning equipment at the bottom of the well includes a scraper conveyor 1, a crushing device 2, a drainage pump 3 and a dehydration device; the scraper conveyor 1 is installed at the coal dropping point M at the bottom layer D of the well, and a scraper conveyor outlet 101 is provided on the scraper conveyor 1. A crushing device feed inlet 201 is provided on the crushing device 2. The scraper conveyor outlet 101 is connected to the crushing device feed inlet 201 for transporting the dropped coal to the crushing device 2; the crushing device 2 is arranged above the bottom sedimentation tank B and is used for crushing the transported coal at the bottom of the well and discharging the crushed coal into the sedimentation tank B; water injection ports (not marked in the figure) are provided at both the crushing device feed inlet 201 and the crushing device discharge outlet 202.

[0021] The drainage pump 3 is placed in the sedimentation tank B and is used for pumping the crushed coal into the dehydration device. The discharge outlet of the drainage pump is connected to the feed inlet of the dehydration device through a material conveying pipe 4. The dehydration device is installed on the upper working surface at the bottom of the well, and the dehydration device is erected above the belt conveyor 7. The dehydrated dry coal slime can be transported to the designated location along with the belt. The start-stop switches of the scraper conveyor 1, the crushing device 2 and the drainage pump 3 are extended to the working area of the upper working surface L at the bottom of the well. The upper working surface L at the bottom of the well is relatively safe, and the operators can work safely.

[0022] The dehydration device includes a solid-liquid separator 5 and a filter press 6; the discharge outlet of the drainage pump 3 is communicated with the feed inlet of the solid-liquid separator 5 through a material conveying pipe 4, and the discharge outlet of the solid-liquid separator 5 is communicated with the feed inlet of the filter press 6.

[0023] The solid-liquid separator 5 includes a rough separator 501 and a buffer container 502. The rough separator 501 is arranged on the top of the buffer container 502. The water outlet of the buffer container 502 is communicated with the feed inlet of the filter press 6. A stirring device (not marked in the figure) is arranged in the buffer container 502. A filter press pump 8 is arranged between the water outlet of the buffer container 502 and the feed inlet of the filter press 6.

[0024] During operation, the slime M of vertical shaft A falls onto the bottom scraper conveyor 1. The scraper conveyor 1 is started to convey the coal fallen at the bottom of the shaft to the crushing device 2. Water is injected through the water injection port at the inlet 201 of the crushing device to prevent sparks from being generated during the crushing of the fallen coal. The crushing device 2 crushes the fallen coal and discharges it into the sedimentation tank B. Water is injected through the water injection port at the outlet 202 of the crushing device to avoid dust and at the same time, the crushed small particle slime can be washed into the sedimentation tank B. The crushed slime ensures that the slime particle size is uniform and small, which is convenient for pumping, conveying and subsequent dehydration treatment. The pumping pump 3 conveys the coal slime water in the sedimentation tank B to the solid-liquid separator 5 on the upper working face L at the bottom of the shaft. The rough separator 501 on the upper layer of the solid-liquid separator 5 preliminarily separates the slime. The large particle coarse slime is directly discharged onto the belt conveyor 7 and transported out. The fine coal slurry enters the buffer stirrer 502 on the lower layer. The stirring device in the buffer stirrer 502 stirs the coal slurry to make it uniform and non-precipitating. Then, the pressure filter pump 8 presses the fine coal slurry in the buffer stirrer 502 into the pressure filter 6 for dehydration. The dehydrated slime is discharged onto the belt conveyor 7 and transported to the designated location. The process circulates until the coal falling cleaning is completed. Embodiment

[0025] On the basis of the first embodiment, the dehydration equipment further includes a PLC controller 9, and the solid-liquid separator 5 and the pressure filter 6 are controlled by the PLC controller 9.

[0026] The bottom coal falling cleaning equipment further includes two high-definition cameras 10. The high-definition cameras 10 are installed at the bottom layer D of the shaft and are used to monitor the situation of the slime M at the bottom of the shaft and the working conditions of the equipment. The explosion-proof computer is installed on the upper working face at the bottom of the shaft. The situation at the bottom of the shaft can be monitored through the pictures taken by the high-definition cameras displayed on the explosion-proof computer. Moreover, the explosion-proof computer is electrically connected to the PLC controller, and the dehydration equipment can be controlled through the explosion-proof computer.

Claims

1. Bottom coal cleaning equipment in the wellbore, characterized in that, It includes a scraper conveyor (1), a crushing device (2), a drainage pump (3) and a dehydration device; The scraper conveyor (1) is installed at the coal dropping place of the bottom layer (D) of the shaft. A scraper conveyor outlet (101) is provided on the scraper conveyor (1). A crushing device inlet (201) is provided on the crushing device (2). The scraper conveyor outlet (101) is docked with the crushing device inlet (201) for conveying the dropped coal to the crushing device (2); The crushing device (2) is arranged above the bottom sedimentation tank (B) of the shaft, and is used for crushing the bottom coal dropped and discharging the crushed coal into the sedimentation tank (B); The drainage pump (3) is placed in the sedimentation tank (B) and is used for pumping and discharging the crushed coal into the dehydration device. The discharge port of the drainage pump (3) is connected to the inlet of the dehydration device through a material conveying pipe (4); The dehydration device is installed on the upper working face (L) of the bottom layer of the shaft.

2. The bottom coal dropping and cleaning equipment according to claim 1, characterized in that The dehydration device includes a solid-liquid separator (5) and a filter press (6); the discharge port of the drainage pump (3) is communicated with the inlet of the solid-liquid separator (5) through a material conveying pipe (4), and the discharge port of the solid-liquid separator (5) is communicated with the inlet of the filter press (6).

3. The coal dropping and cleaning equipment at the bottom of the well according to claim 2, characterized in that, The solid-liquid separator (5) includes a rough separator (501) and a buffer container (502). The rough separator (501) is arranged on the top of the buffer container (502). The water outlet of the buffer container (502) is communicated with the inlet of the filter press (6). A stirring device is arranged in the buffer container (502).

4. The bottom coal falling and cleaning equipment according to claim 3, characterized in that A filter press pump (8) is arranged between the water outlet of the buffer container (502) and the inlet of the filter press (6).

5. The bottom coal dropping and cleaning device according to claim 4, characterized in that The dehydration device further includes a PLC controller (9), and the solid-liquid separator (5) and the filter press (6) are controlled by the PLC controller (9).

6. The coal dropping and cleaning equipment at the bottom of the well according to claim 1, characterized in that, Water injection ports are provided at both the crushing device inlet (201) and the crushing device outlet (202).

7. The bottom coal dropping and cleaning device according to claim 5, characterized in that, It further includes at least one high-definition camera (10) for monitoring the bottom coal slime condition and the working condition of the bottom equipment.

8. The bottom coal dropping and cleaning equipment according to claim 7, characterized in that It further includes an explosion-proof computer. The explosion-proof computer is installed on the upper working face of the bottom layer of the shaft, and the explosion-proof computer is electrically connected to the PLC controller (9).

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