A spiral chute type coal pre-washing and stratifying device

Abstract

The present invention relates to the technical field of coal pre-washing stratification, and particularly relates to a spiral chute type coal pre-washing stratification device. The present invention provides a spiral chute type coal pre-washing stratification device that can perform stage control on the mud flow rate in the spiral chute and can be flexibly adjusted to adapt to different coal stratification requirements. A spiral chute type coal pre-washing stratification device includes a base, a first support frame, a first mounting column, a second mounting column, etc. The upper sides of the left and right parts of the base are both connected with a first support frame, the first support frames are both connected with a first mounting column, and the tops of the first support frames are both connected with a second mounting column. By rotating the output shaft of the second motor to drive the screw rod to rotate, the rotation of the screw rod controls the up and down movement of the mounting frame, adjusts the distance between the first chute and the second chute, and can perform stage control on the mud flow rate in the spiral chute and can be flexibly adjusted to adapt to different coal stratification requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of coal pre-washing stratification, and particularly to a spiral chute type coal pre-washing stratification device. Background Art

[0002] The spiral chute type coal pre-washing stratification device is a device that utilizes the special geometric shape of the spiral chute and the principle of water flow dynamics to preliminarily clean raw coal and stratify it according to density.

[0003] The existing device mixes ore with water to form pulp, and evenly feeds it into the top of the spiral chute through a feeding trough. As the pulp flows downward along the spiral chute, due to the inclination of the spiral chute itself and the spiral structure, the pulp is not only affected by gravity, but also experiences changes in the centrifugal force field. And in the spiral chute, the particles in the pulp are affected by different forces due to different densities. Larger density particles (such as heavy minerals) tend to overcome the water flow resistance and move towards the inner side or bottom of the chute under the combined action of gravity and centrifugal force, while smaller density particles (such as light minerals and mud) are more easily carried away by the water flow and tend to the outer side or upper part of the chute. This differential movement realizes natural stratification according to density. To achieve the stratification purpose, however, the existing spiral chute structure is fixed, and it is impossible to stage-control the slurry flow rate in the spiral chute, and it is also impossible to flexibly adjust and adapt to different coal stratification requirements after being put into use.

[0004] Therefore, a spiral chute type coal pre-washing stratification device that can stage-control the slurry flow rate in the spiral chute and can be flexibly adjusted to adapt to different coal stratification requirements has now been developed. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art in the above background art, the present invention provides a spiral chute type coal pre-washing stratification device that can stage-control the slurry flow rate in the spiral chute and can be flexibly adjusted to adapt to different coal stratification requirements.

[0006] The technical solution is: a spiral chute type coal pre-washing stratification device, including a base, a first support frame, a first mounting column, a second mounting column, a connecting block, a first chute, a stirring mechanism, an adjusting mechanism, and a stratifying mechanism. The upper sides of the left and right parts of the base are both connected with a first support frame, the first support frames are both connected with a first mounting column, the tops of the first support frames are both connected with a second mounting column, the second mounting columns are both connected with a plurality of connecting blocks, and the connecting blocks on the same second mounting column are connected with a first chute. A stirring mechanism is arranged at the top of the second mounting column, an adjusting mechanism is arranged on each of the first support frames, and a stratifying mechanism is arranged at the lower part of each of the first support frames.

[0007] As an improvement of the above solution, the first chutes are combined to form a double-channel chute structure.

[0008] As an improvement to the above solution, the stirring mechanism includes a mounting table, a slurry mixing barrel, a diversion pipe, a fixing frame, a first motor, and a stirring frame. A mounting table is connected between the tops of the second mounting columns. The mounting table is connected to the slurry mixing barrel at the top. Diversion pipes are connected between the left and right sides of the lower part of the slurry mixing barrel and the adjacent first chutes respectively. The diversion pipes all pass through the adjacent first chutes. A fixing frame is connected to the upper part of the slurry mixing barrel. A first motor is connected to the upper side of the middle of the fixing frame. A stirring frame is connected to the output shaft of the first motor. The rotation of the output shaft of the first motor drives the stirring frame to rotate. The rotation of the stirring frame stirs the coal-water mixture inside the slurry mixing barrel, washes the coal, and introduces the coal-water mixture into the corresponding first chute through the diversion pipe for stratification operation.

[0009] As an improvement to the above solution, the adjusting mechanism includes a second motor, a lead screw, a mounting frame, and a second chute. Second motors are connected to the tops of the first support frames. Lead screws are connected to the output shafts of the second motors respectively. Mounting frames are threadedly connected to the lead screws. The mounting frames are all slidably connected to the adjacent first mounting columns. Second chutes are connected to the mounting frames. The rotation of the output shaft of the second motor drives the lead screw to rotate. The rotation of the lead screw controls the up and down movement of the mounting frame, adjusting the distance between the first chute and the second chute. When the distance between the first chute and the second chute becomes larger, when the coal-water mixture flows from the first chute into the second chute, it will fall at the junction of the first chute and the second chute. The increase in the falling distance will accelerate the flow rate, and the flow rate of the coal-water mixture in the second chute can be adjusted to adapt to different stratification requirements.

[0010] As an improvement to the above solution, the stratification mechanism includes a second support frame, a slurry separation tank, a slurry discharge pipe, a coal mine separation box, and a partition board. Second support frames are connected to the lower parts of the first support frames respectively. Slurry separation tanks are connected to the second support frames. A plurality of slurry discharge pipes are connected to the bottoms of the slurry separation tanks. Coal mine separation boxes are connected to the slurry separation tanks of the second support frames. Partition boards are connected inside the coal mine separation boxes. The slurry part in the coal-water mixture stratified by the second chute flows into the slurry separation tank for diversion and discharge. The coal in the form of lumps and particles will fall on both sides of the partition board according to the different inertia forces due to their different volumes when flying out when being discharged from the second chute, achieving the purpose of slurry-water separation and coal mine separation.

[0011] As an improvement to the above solution, connecting flanges are provided at the bottoms of the slurry discharge pipes.

[0012] As an improvement to the above solution, the lower parts of the coal mine separation box and the partition board are both inclined structures.

[0013] The beneficial effects are as follows: 1. In the present invention, the rotation of the output shaft of the second motor drives the lead screw to rotate. The rotation of the lead screw controls the up and down movement of the mounting frame, adjusting the distance between the first chute and the second chute, enabling the phased control and flexible regulation of the slurry flow rate in the spiral chute to adapt to different coal stratification requirements.

[0014] 2. The present invention can, according to the different inertia forces received by the coal in the form of lumpy particles due to their volume sizes, fall on both sides of the partition plate at different flying distances when exiting the second chute, thus achieving the purpose of mud-water separation and coal mine sorting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the present invention.

[0016] Figure 2 It is a partial three-dimensional structural diagram of the present invention.

[0017] Figure 3 It is a three-dimensional structural diagram of the stirring mechanism of the present invention.

[0018] Figure 4 It is a schematic structural diagram of the adjusting mechanism of the present invention.

[0019] Figure 5 It is a partial three-dimensional structural diagram of the adjusting mechanism of the present invention.

[0020] Figure 6 It is a three-dimensional structural diagram of the layering mechanism of the present invention.

[0021] Figure 7 It is a partial three-dimensional structural diagram of the layering mechanism of the present invention.

[0022] Figure 8 It is a cross-sectional view of the three-dimensional structure of the layering mechanism of the present invention.

[0023] Names of the reference numerals in the figures: 1 - base, 11 - first support frame, 12 - first mounting post, 13 - second mounting post, 14 - connecting block, 15 - first chute, 2 - stirring mechanism, 20 - mounting table, 21 - slurry mixing barrel, 22 - shunt pipe, 23 - fixing frame, 24 - first motor, 25 - stirring frame, 3 - adjusting mechanism, 30 - second motor, 31 - lead screw, 32 - mounting frame, 33 - second chute, 4 - layering mechanism, 40 - second support frame, 41 - mud separation tank, 42 - slurry discharge pipe, 43 - coal mine separation box, 4301 - partition plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following provides a specific introduction to the present invention in combination with the accompanying drawings and specific embodiments.

[0025] A spiral chute type coal pre-washing and layering device, as Figures 1-8As shown in the figure, it includes a base 1, a first support frame 11, a first mounting column 12, a second mounting column 13, a connecting block 14, a first chute 15, a stirring mechanism 2, an adjusting mechanism 3, and a layering mechanism 4. On the upper sides of the left and right parts of the base 1, there are connected first support frames 11. On the first support frames 11, there are connected first mounting columns 12. On the tops of the first support frames 11, there are connected second mounting columns 13. On the second mounting columns 13, there are connected multiple connecting blocks 14. Between the connecting blocks 14 on the same second mounting column 13, there are connected first chutes 15. On the top of the second mounting column 13, there is a stirring mechanism 2. On the first support frames 11, there are adjusting mechanisms 3. On the lower parts of the first support frames 11, there are layering mechanisms 4;

[0026] The stirring mechanism 2 includes a mounting table 20, a slurry mixing barrel 21, a shunt pipe 22, a fixing frame 23, a first motor 24, and a stirring frame 25. Between the tops of the second mounting columns 13, there is a mounting table 20 connected. On the top of the mounting table 20, there is a slurry mixing barrel 21 connected. On the left and right sides of the lower part of the slurry mixing barrel 21, there are connected shunt pipes 22 with the adjacent first chutes 15 respectively. The shunt pipes 22 all pass through the adjacent first chutes 15. On the upper part of the slurry mixing barrel 21, there is a fixing frame 23 connected. On the upper side of the middle of the fixing frame 23, there is a first motor 24 connected. On the output shaft of the first motor 24, there is a stirring frame 25 connected;

[0027] The adjusting mechanism 3 includes a second motor 30, a lead screw 31, a mounting frame 32, and a second chute 33. On the tops of the first support frames 11, there are second motors 30 connected. On the output shafts of the second motors 30, there are lead screws 31 connected. On the lead screws 31, there are mounting frames 32 threadedly connected. The mounting frames 32 are all slidably connected with the adjacent first mounting columns 12. On the mounting frames 32, there are second chutes 33 connected;

[0028] The layering mechanism 4 includes a second support frame 40, a slurry separation tank 41, a slurry discharge pipe 42, a coal mine separation box 43, and a partition board 4301. On the lower parts of the first support frames 11, there are second support frames 40 connected. On the second support frames 40, there are slurry separation tanks 41 connected. On the bottoms of the slurry separation tanks 41, there are multiple slurry discharge pipes 42 connected. On the slurry separation tanks 41 of the second support frames 40, there are coal mine separation boxes 43 connected. Inside the coal mine separation boxes 43, there are partition boards 4301 connected.

[0029] When the present invention is in use, first, the coal mine to be pre-washed and stratified and the cleaning liquid are introduced into the slurry mixing tank 21 for stirring. The output shaft of the first motor 24 rotates to drive the stirring frame 25 to rotate. The rotation of the stirring frame 25 stirs the coal-water mixture inside the slurry mixing tank 21, cleans the coal, and the coal-water mixture is introduced into the corresponding first chute 15 through the shunt pipe 22 for stratification operation. Before pre-washing and stratification, the output shaft of the second motor 30 rotates to drive the lead screw 31 to rotate. The rotation of the lead screw 31 controls the up and down movement of the mounting frame 32 to adjust the distance between the first chute 15 and the second chute 33. When the distance between the first chute 15 and the second chute 33 becomes larger, when the coal-water mixture flows from the first chute 15 into the second chute 33, it will fall at the junction of the first chute 15 and the second chute 33. The increase in the falling distance results in an increase in the flow rate, which can adjust the flow rate of the coal-water mixture in the second chute 33 to adapt to different stratification requirements. The slurry part in the coal-water mixture stratified by the second chute 33 flows into the slurry separation tank 41 for shunt export, while the coal in the form of massive particles, due to different inertia according to their volume sizes, fly out different distances when exported from the second chute 33 and fall on both sides of the partition plate 4301, achieving the purpose of mud-water shunt and coal mine separation.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes can be made therein without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spiral chute type coal pre-washing and stratifying device, characterized in that, It includes a base (1), a first support frame (11), a first mounting post (12), a second mounting post (13), a connecting block (14), a first chute (15), a stirring mechanism (2), an adjusting mechanism (3) and a layering mechanism (4). On the upper sides of the left and right parts of the base (1), there are connected first support frames (11). On the first support frames (11), there are connected first mounting posts (12). On the tops of the first support frames (11), there are connected second mounting posts (13). On the second mounting posts (13), there are connected a plurality of connecting blocks (14). Between the connecting blocks (14) on the same second mounting post (13), there is connected a first chute (15). On the top of the second mounting post (13), there is a stirring mechanism (2). On the first support frames (11), there are adjusting mechanisms (3). On the lower parts of the first support frames (11), there are layering mechanisms (4); The adjusting mechanism (3) includes a second motor (30), a lead screw (31), a mounting frame (32) and a second chute (33). On the tops of the first support frames (11), there are connected second motors (30). On the output shafts of the second motors (30), there are connected lead screws (31). On the lead screws (31), there are threadedly connected mounting frames (32). The mounting frames (32) are all slidably connected to the adjacent first mounting posts (12). On the mounting frames (32), there are connected second chutes (33), and the first chute (15) and the second chute (33) can be joined together.

2. The spiral chute type coal pre-washing and stratifying device according to claim 1, characterized in that, The first chutes (15) form a double-channel chute structure.

3. The spiral chute type coal pre-washing and stratifying device according to claim 2, characterized in that, The stirring mechanism (2) includes a mounting table (20), a slurry mixing barrel (21), a shunt pipe (22), a fixing frame (23), a first motor (24) and a stirring frame (25). Between the tops of the second mounting posts (13), there is connected a mounting table (20). On the top of the mounting table (20), there is connected a slurry mixing barrel (21). On the left and right sides of the lower part of the slurry mixing barrel (21), there are connected shunt pipes (22) to the adjacent first chutes (15). The shunt pipes (22) all pass through the adjacent first chutes (15). On the upper part of the slurry mixing barrel (21), there is connected a fixing frame (23). On the upper side of the middle of the fixing frame (23), there is connected a first motor (24). On the output shaft of the first motor (24), there is connected a stirring frame (25).

4. The spiral chute type coal pre-washing and stratifying device according to claim 3, characterized in that the stratification The mechanism (4) includes a second support frame (40), a slurry separation tank (41), a slurry discharge pipe (42), a coal mine separation box (43) and a partition board (4301). On the lower parts of the first support frames (11), there are connected second support frames (40). On the second support frames (40), there are connected slurry separation tanks (41). On the bottoms of the slurry separation tanks (41), there are connected a plurality of slurry discharge pipes (42). On the slurry separation tanks (41) of the second support frames (40), there are connected coal mine separation boxes (43). Inside the coal mine separation boxes (43), there are connected partition boards (4301).

5. The spiral chute type coal pre-washing and stratifying device according to claim 4, characterized in that, At the bottoms of the slurry discharge pipes (42), there are all provided connecting flanges.

6. The spiral chute type coal pre-washing and stratifying device according to claim 5, characterized in that, The lower parts of the coal mine separation boxes (43) and the partition boards (4301) are both inclined structures.

Images