Coarse slime sorting machine with multi-stage sorting function

Abstract

The coarse coal slime sorting machine with the multi-stage sorting function comprises a sorting machine barrel body, a clean coal overflow groove is formed in the top of the sorting machine barrel body, a water inlet pipe is installed on the lower portion of the outer portion of the sorting machine barrel body, and a grading assembly used for grading coal slime is installed on the top of the sorting machine barrel body; the combination of the overflow weir and the clean coal overflow groove is optimized, the separation precision is further improved through the L-shaped grading overflow weir, fine silt and coarse coal slime are separated, the clean coal separation efficiency is improved, the quality of coarse and clean coal is improved, and fine silt pollution is reduced to the maximum extent; coarse clean coal is subjected to free settling concentration in the clean coal overflow groove, a large amount of water and fine silt are discharged through an overflow weir, the concentration of the coarse clean coal is remarkably improved, and the dehydration pressure of subsequent procedures is reduced; through linkage of the liquid level sensor and the automatic control valve, the stability of the liquid level is ensured, the concentration of coarse clean coal and the content of fine silt are flexibly adjusted, human intervention is reduced, and the separation precision and stability are improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal sorting, and in particular to a coarse coal slime sorting machine with a multi-stage sorting function. Background Art

[0002] With the development and utilization of coal resources, coarse coal slime sorting technology has received extensive attention and application as an important link to improve the recovery rate of coal resources. Coarse coal slime sorting is an important part of coal washing and processing. Its main purpose is to separate the clean coal particles from the gangue particles in the coarse coal slime through sorting equipment to improve the utilization rate of coal resources and reduce the pollution of gangue to the environment.

[0003] At present, coarse coal slime sorting technology usually separates and recovers the coarse coal slime generated in the coal washing process through coarse coal slime sorting machines, coal slime heavy media and other means, so as to improve the quality and processing efficiency of coal slime, further improve resource utilization and reduce waste; however, the traditional coarse coal slime sorting machine has poor sorting effect when processing coal slime with a wide particle size range and complex properties, and it is difficult to adapt to the complex distribution of coal slime particle size, especially when fine slime and coarse coal slime coexist, the fine slime is seriously polluted and the sorting effect is poor; in addition, the clean coal concentration is low after coarse coal slime sorting, the subsequent dehydration process has high pressure and poor dehydration effect, resulting in a decrease in the quality of clean coal and high moisture content, which affects the final clean coal quality and thus affects the economic benefits of the coal preparation plant. Summary of the invention

[0004] The object of the present invention is to provide a coarse coal slime separator with a multi-stage separation function to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a coarse coal slime separator with multi-stage separation function, comprising a separator barrel, a clean coal overflow trough is installed on the top of the separator barrel, a water inlet pipe is installed below the outside of the separator barrel, and a grading assembly for screening fine slime and clean coal is installed on the top of the separator barrel; The grading component includes an overflow weir, which is installed on the outside of the clean coal overflow trough. A grading overflow weir is installed on the inner wall of the overflow weir. A first overflow trough is formed between the inside of the grading overflow weir and the outside of the clean coal overflow trough, and a second overflow trough is formed between the inside of the overflow weir and the outside of the grading overflow weir.

[0006] Preferably, a control component is also installed on the inner wall of the overflow weir, and the control component includes an automatic control valve and a liquid level sensor. The liquid level sensor is installed on the inner wall of the overflow weir, and the automatic control valve is installed at the bottom of the overflow weir.

[0007] Preferably, a fine mud pipe is installed on the side of the overflow weir, a clean coal pipe is installed at the bottom of the overflow weir, and a feed port of the fine mud pipe is connected to the second overflow trough.

[0008] Preferably, a discharge piece is installed at the bottom of the barrel of the sorting machine, a turbulence plate group is installed on the top of the discharge piece, a mounting frame is arranged on the top of the barrel of the sorting machine, an actuator and a feed well are arranged on the mounting frame, the bottom of the feed well extends to the interior of the barrel of the sorting machine, and a feed pipe is connected to the outside of the feed well.

[0009] Preferably, the discharge member comprises a discharge valve installed at the bottom of the barrel of the sorting machine, and a discharge pipe is installed inside the discharge valve.

[0010] Preferably, the turbulence plate group includes a first turbulence plate and a second turbulence plate, the first turbulence plate is located above the second turbulence plate, and the water outlet of the water inlet pipe is located between the second turbulence plate and the inner bottom of the sorting machine barrel.

[0011] Preferably, the thin mud pipe is inclined downward from its feed inlet to its discharge outlet.

[0012] Preferably, the automatic control valve is electrically connected to the liquid level sensor via a wire.

[0013] Preferably, the graded overflow weir is constructed in an L-shape.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention realizes the separation of fine mud and coarse coal mud and improves the sorting efficiency of clean coal by optimizing the overflow weir, the clean coal overflow trough and the combined use of the overflow trough, and at the same time further improves the accuracy of coal mud sorting through the setting of the L-shaped grading overflow weir, reduces the mixing of clean coal and gangue, ensures a high recovery rate of clean coal, and the liquid level sensor is linked with the automatic control valve to ensure liquid level stability, reduce human intervention, improve the accuracy and stability of the sorting process, reduce gangue discharge through precise sorting and overflow control, and effectively reduce possible environmental pollution during coal mud sorting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a coarse coal slime separator with a multi-stage separation function according to an embodiment of the present invention; Figure 2 A three-dimensional diagram of a coarse coal slime separator with a multi-stage separation function according to an embodiment of the present invention; Figure 3 It is an internal cross-sectional view of a coarse coal slime separator with a multi-stage separation function according to an embodiment of the present invention; Figure 4 It is a schematic structural diagram of an overflow weir and a liquid level sensor in a coarse coal slime separator with a multi-stage separation function according to an embodiment of the present invention.

[0016] As shown in the figure: 110, sorting machine barrel; 120, feed well; 130, feed pipe; 140, clean coal overflow trough; 150, turbulence plate group; 151, first turbulence plate; 152, second turbulence plate; 160, discharge piece; 161, discharge valve; 162, discharge pipe; 170, actuator; 180, water inlet pipe; 200, grading component; 210, overflow weir; 220, grading overflow weir; 230, fine mud pipe; 240, clean coal pipe; 250, first overflow trough; 260, second overflow trough; 300, control component; 310, automatic control valve; 320, liquid level sensor. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1 The embodiment of the present invention provides a coarse coal slime separator with a multi-stage separation function, including a separator barrel 110, a clean coal overflow trough 140 is installed on the top of the separator barrel 110, a water inlet pipe 180 is installed below the outside of the separator barrel 110, and a classification component 200 for classifying fine slime and clean coal is installed on the top of the separator barrel 110; The grading assembly 200 includes an overflow weir 210, which is installed on the outside of the clean coal overflow trough 140. A grading overflow weir 220 is installed on the inner wall of the overflow weir 210. A first overflow trough 250 is formed between the inside of the grading overflow weir 220 and the outside of the clean coal overflow trough 140, and a second overflow trough 260 is formed between the inside of the overflow weir 210 and the outside of the grading overflow weir 220.

[0019] According to the above scheme, the clean coal overflow trough 140 and the grading assembly 200 form a grading whole, avoiding the connection loss between different equipment in the traditional process. Through the turbulent effect of water flow, the coal slime particles are initially stratified according to density and particle size. The lighter fine slime material enters the upper layer through the overflow effect and is discharged through the fine slime pipe 230, while the heavier coarse-grained material settles to the bottom and is discharged through the clean coal pipe 240, thereby realizing the separation of fine slime and coarse-grained coal slime. In addition, through the setting of the grading overflow weir 220, the separation effect of fine slime and coarse-grained coal slime is further enhanced, thereby improving the purity of the coarse-grained coal slime.

[0020] By setting the first overflow trough 250 and the second overflow trough 260, the material flow path of coal slime sorting and grading is optimized. The first overflow trough 250 is located between the overflow weir 210 and the clean coal overflow trough 140, and can utilize the liquid level height difference and the turbulent characteristics of the water flow to achieve preliminary screening and guidance of the coal slime material overflowing from the clean coal overflow trough 140, so that the material can smoothly enter the overflow weir 210, avoiding confusion and loss of the material during the overflow process. The second overflow trough 260 is located between the overflow weir 210 and the grading overflow weir 220, and is connected to the feed port of the fine mud pipe 230, so as to further screen the fine mud material and smoothly transport the screened fine mud material to the fine mud pipe 230 for discharge, thereby enhancing the separation effect of the fine mud material and ensuring that the coarse-grained coal slime is accurately screened and diverted, further improving its purity, reducing the mixing of clean coal and impurities, and ensuring the quality of the clean coal.

[0021] By using the first overflow trough 250 and the second overflow trough 260 in coordination, the first overflow trough 250 ensures the material flow stability from the clean coal overflow trough 140 into the overflow weir 210, avoiding material disorder during the overflow process, thereby improving the clean coal sorting purity. The second overflow trough 260 is used in coordination with the grading overflow weir 220 to further improve the grading accuracy of fine mud materials, reduce the mixing of clean coal and fine mud, and ensure the recovery rate and quality of the clean coal.

[0022] like Figure 4 As shown, a control component 300 is also installed on the inner wall of the overflow weir 210 , and the control component 300 includes an automatic control valve 310 and a liquid level sensor 320 . The liquid level sensor 320 is installed on the inner wall of the overflow weir 210 , and the automatic control valve 310 is installed at the bottom of the overflow weir 210 .

[0023] According to the above technical solution, the liquid level sensor 320 continuously monitors the liquid level height in the overflow weir 210 to ensure that the liquid level is always in the optimal range during the sorting process. When the liquid level deviates, the liquid level sensor 320 can detect the abnormality in time and transmit the liquid level data to the automatic control valve 310 electrically connected thereto through an electrical signal. The automatic control valve 310 dynamically adjusts the liquid flow in the overflow weir 210 according to the received liquid level data, and accurately controls the intensity of water turbulence during the sorting process. Through this mechanism, the liquid level sensor 320 and the automatic control valve 310 work together to adjust the sedimentation velocity and flow path of the coal slime particles, thereby realizing dynamic control of the coal slime classification intensity, which can not only stabilize the liquid level but also optimize the classification effect according to the density and particle size changes of the coal slime particles, thereby further improving the sorting efficiency and the quality and purity of the clean coal.

[0024] In one embodiment, Figure 2 and Figure 3 As shown, specifically, the graded overflow weir 220 is constructed in an L-shape.

[0025] According to the above technical solution, the L-shaped design enables the grading overflow weir 220 to effectively guide coal slime materials of different particle sizes to flow to different discharge channels, ensuring that fine slime materials and coarse particles are diverted and processed in their respective areas, thereby improving the grading accuracy, and enabling each layer of material to be accurately sorted through different flow channels to avoid material crossover or mixing, thereby improving the overall efficiency of coal slime sorting, reducing the mixing of clean coal and fine slime, and improving the purity of clean coal.

[0026] In one embodiment, further, the thin mud pipe 230 is inclined downward from its feed port to its discharge port.

[0027] According to the above technical solution, by means of the inclined layout in which the fine mud pipe 230 is tilted downward from the feed port to the discharge port, the fine mud pipe 230 can utilize gravity to assist the discharge of fine mud materials, reduce the retention of materials in the pipeline, thereby improving the sorting efficiency, and the inclined design can promote the discharge of materials along the natural flow direction of the pipeline, avoiding the accumulation or blockage of materials in the pipeline, which can not only improve the sorting accuracy, but also ensure that the fine mud materials and coarse particles are effectively separated.

[0028] The inclined slime pipe 230 optimizes the flow path of the coal slime inside the separator, making the material discharge process smoother and reducing sedimentation and accumulation, thereby ensuring the high efficiency of the entire coal slime separation process.

[0029] In one embodiment, Figure 2 and Figure 4 As shown, specifically, the automatic control valve 310 is electrically connected to the liquid level sensor 320 via a wire.

[0030] In the above technical solution, the liquid level sensor 320 monitors the liquid level changes in the overflow weir 210 in real time to ensure that the liquid level is maintained within the optimal range. When the liquid level deviates, the liquid level sensor 320 will detect the abnormality and send a signal.

[0031] The automatic control valve 310 receives the electrical signal from the liquid level sensor 320, and automatically adjusts the liquid flow rate according to the real-time data provided by the liquid level sensor 320, so as to ensure that the liquid level in the overflow weir 210 is always within the set safety range.

[0032] Through the wire connection, the liquid level sensor 320 and the automatic control valve 310 realize automatic control and adjustment. The liquid level sensor 320 continuously monitors the liquid level change and transmits the signal to the automatic control valve 310. The automatic control valve 310 adjusts the water flow in time according to the received signal to avoid the liquid level being too high or too low, thereby ensuring the stability and accuracy of the coal slime sorting process.

[0033] In one embodiment, Figure 3As shown, specifically, a discharge piece 160 is installed at the bottom of the sorting machine barrel 110, a turbulence plate group 150 is installed on the top of the discharge piece 160, a mounting frame is arranged on the top of the sorting machine barrel 110, an actuator 170 and a feed well 120 are arranged on the mounting frame, the bottom of the feed well 120 extends to the interior of the sorting machine barrel 110, and the outside of the feed well 120 is connected to a feed pipe 130.

[0034] According to the above technical solution, the discharge piece 160 is installed at the bottom of the sorting machine barrel 110, which can effectively discharge the sorted materials from the inside of the barrel. The turbulence plate group 150 is installed on the top of the discharge piece 160. By changing the flow direction and flow rate of the water flow, the turbulence of the water flow is promoted, and the stratification effect of the coal slime particles is enhanced. The design of the turbulence plate group 150 effectively prevents the sedimentation or blockage of the material, thereby ensuring the continuity and efficiency of the sorting process.

[0035] The mounting frame arranged on the top of the sorting machine barrel 110 provides stable support, and the actuator 170 arranged on the mounting frame can be used to control the flow rate of the feed or adjust other operating parameters to ensure the stability of the feed. The bottom of the feed well 120 extends to the inside of the sorting machine barrel 110, which can effectively guide the feed flow into the barrel, and combine with the fluid dynamics in the barrel to achieve accurate material sorting.

[0036] In one embodiment, specifically, the discharge member 160 includes a discharge valve 161 installed at the bottom of the sorting machine barrel 110 , and a discharge pipe 162 is installed inside the discharge valve 161 .

[0037] According to the above technical solution, the discharge valve 161 is installed at the bottom of the sorting machine barrel 110 to control the discharge of materials. The design of the discharge valve 161 enables the sorted coal slime material to be discharged from the barrel in an orderly and controllable manner, avoiding instability or blockage of the material during the discharge process.

[0038] The discharge pipe 162 is installed inside the discharge valve 161 and is responsible for guiding the material from the discharge valve 161 to the external discharge area. The design of the discharge pipe 162 can ensure smooth discharge of the material and effectively prevent leakage or blockage, thereby further improving the discharge efficiency of the equipment.

[0039] The coordinated work of the discharge valve 161 and the discharge pipe 162 ensures the stable discharge of materials during the sorting process, which helps to improve the operating efficiency of the overall equipment and ensure the smooth progress of the sorting process.

[0040] In one embodiment, the turbulence plate group 150 includes a first turbulence plate 151 and a second turbulence plate 152 , the first turbulence plate 151 is located above the second turbulence plate 152 , and the water outlet of the water inlet pipe 180 is located between the second turbulence plate 152 and the inner bottom of the sorting machine barrel 110 .

[0041] According to the above technical solution, the first turbulence plate 151 is located above the second turbulence plate 152, and the two work together to adjust the flow direction and flow rate of the water flow. The first turbulence plate 151 changes the flow pattern of the water flow and enhances the turbulent effect of the water flow, so that the coal slime particles can be better stratified, while the second turbulence plate 152 further optimizes the flow path of the water flow, promotes the sorting of materials, improves the dispersion of the coal slime material inside the barrel, and prevents precipitation or blockage between particles.

[0042] The water outlet is located between the second turbulence plate 152 and the inner bottom of the separator barrel 110, which can ensure that the material can flow out smoothly after passing through the turbulence plate. Through this layout, the water outlet can optimize the distribution of water flow, reduce the interference between water flow and coal slime material, and ensure the accuracy of the sorting effect.

[0043] In summary: The present invention integrates the clean coal overflow trough 140 and the grading component 200 to form an organic whole, thereby realizing integrated processing of sorting and grading in the same device. By utilizing the turbulent effect of water flow and the fine grading function of the grading overflow weir 220, the coal slime particles can be effectively stratified according to their density and particle size, and lighter fine slime materials can be discharged through the fine slime pipe 230, while heavier coarse particles are discharged by sedimentation through the clean coal pipe 240, thereby significantly improving the sorting efficiency.

[0044] At the same time, the setting of the control component 300 provides a guarantee for the stable operation of the equipment. The liquid level sensor 320 can monitor the liquid level changes in the overflow weir 210 in real time, and dynamically adjust the liquid flow in the overflow weir 210 by linking the automatic control valve 310 through an electrical signal to ensure that the liquid level is maintained within the optimal range, avoid insufficient sorting or unstable overflow caused by abnormal liquid level, and improve the sorting accuracy of coal slime.

[0045] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coarse coal slime separator with a multi-stage separation function, comprising a separator barrel (110), a clean coal overflow trough (140) being installed on the top of the separator barrel (110), and a water inlet pipe (180) being installed at the lower part of the outside of the separator barrel (110), characterized in that: A classification component (200) for screening fine mud and clean coal is installed on the top of the separator barrel (110); The grading assembly (200) comprises an overflow weir (210), wherein the overflow weir (210) is installed outside the clean coal overflow trough (140), and a grading overflow weir (220) is installed on the inner wall of the overflow weir (210), a first overflow trough (250) is formed between the inside of the grading overflow weir (220) and the outside of the clean coal overflow trough (140), and a second overflow trough (260) is formed between the inside of the overflow weir (210) and the outside of the grading overflow weir (220).

2. The coarse coal slime separator with multi-stage separation function according to claim 1, characterized in that: A control component (300) is also installed on the inner wall of the overflow weir (210). The control component (300) comprises an automatic control valve (310) and a liquid level sensor (320). The liquid level sensor (320) is installed on the inner wall of the overflow weir (210), and the automatic control valve (310) is installed at the bottom of the overflow weir (210).

3. The coarse coal slime separator with multi-stage separation function according to claim 1, characterized in that: A fine mud pipe (230) is installed on the side of the overflow weir (210), a clean coal pipe (240) is installed at the bottom of the overflow weir (210), and a feed inlet of the fine mud pipe (230) is in communication with the second overflow trough (260).

4. The coarse coal slime separator with multi-stage separation function according to claim 1, characterized in that: A discharge piece (160) is installed at the bottom of the sorting machine barrel (110), a turbulence plate group (150) is installed at the top of the discharge piece (160), a mounting frame is arranged at the top of the sorting machine barrel (110), an actuator (170) and a feed well (120) are arranged on the mounting frame, the bottom of the feed well (120) extends to the interior of the sorting machine barrel (110), and the outside of the feed well (120) is connected to a feed pipe (130).

5. The coarse coal slime separator with multi-stage separation function according to claim 4, characterized in that: The discharge member (160) comprises a discharge valve (161) installed at the bottom of the separator barrel (110), and a discharge pipe (162) is installed inside the discharge valve (161).

6. The coarse coal slime separator with multi-stage separation function according to claim 4, characterized in that: The turbulence plate group (150) comprises a first turbulence plate (151) and a second turbulence plate (152), the first turbulence plate (151) being located above the second turbulence plate (152), and the water outlet of the water inlet pipe (180) being located between the second turbulence plate (152) and the inner bottom of the separator barrel (110).

7. The coarse coal slime separator with multi-stage separation function according to claim 3, characterized in that: The thin mud pipe (230) is inclined downward in sequence from its feed inlet to its discharge outlet.

8. The coarse coal slime separator with multi-stage separation function according to claim 2, characterized in that: The automatic control valve (310) is electrically connected to the liquid level sensor (320) via a wire.

9. The coarse coal slime separator with multi-stage separation function according to claim 1, characterized in that: The grading overflow weir (220) is constructed in an L-shape.

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