CN112676050B - Coal slime sorting system - Google Patents
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Abstract
The application relates to a coal slime sorting system relates to the coal slime and selects separately technical field, includes: the upper part of the side wall of the outer cylinder body is provided with an overflow port; the feeding pipe is arranged in the center of the top wall of the outer cylinder body, and the lower end of the feeding pipe extends into the outer cylinder body; the sorting body is arranged at the lower end of the feeding pipe and comprises a cone and a cone barrel arranged along the edge of the bottom of the cone, the axis of the cone is superposed with the axis of the feeding pipe, the tip of the cone faces the lower port of the feeding pipe, and the opening of the cone barrel faces the feeding pipe; the underflow cylinder body is arranged at the lower end of the outer cylinder body and comprises a bottom ring body connected with the lower end face of the outer cylinder body and a lower charging barrel fixedly arranged along the inner side edge of the bottom ring body, a middle flow channel is arranged on the bottom ring body, and an underflow opening is formed at the lower end of the lower charging barrel; the middle flow barrel is connected with the lower part of the bottom flow barrel, a middle flow port is arranged at the lower end of the middle flow barrel, and the lower end of the lower charging barrel penetrates out of the bottom surface of the middle flow barrel downwards. This application has the effect that the sorting effect is strong.
Description
Technical Field
The application relates to the technical field of coal slime separation, in particular to a coal slime separation system.
Background
The separation of coarse slime is an important link in the coal production process. The coarse coal slime separation process always adopts a flotation process, but in practical application, the separation effect of flotation on coarse coal is weak, so that the content of coarse coal or low-ash coal in flotation tail coal is low, the loss amount of flotation clean coal is increased, and the waste of resources is caused.
Disclosure of Invention
In order to improve the sorting effect, reduce the waste of resource, this application provides a coal slime sorting system.
The application provides a coal slime sorting system adopts following technical scheme:
a coal slurry separation system comprising:
the lower end of the outer cylinder is provided with an opening, and the upper part of the side wall of the outer cylinder is provided with an overflow port;
the feeding pipe is arranged in the center of the top wall of the outer cylinder body, and the lower end of the feeding pipe extends into the outer cylinder body;
the sorting body is arranged at the lower end of the feeding pipe and comprises a cone and a cone barrel arranged along the edge of the bottom of the cone, the axis of the cone is superposed with the axis of the feeding pipe, the tip of the cone faces the lower port of the feeding pipe, the opening of the cone barrel faces the feeding pipe, and a material sorting area is formed between the side surface of the cone and the inner wall surface of the cone barrel;
the underflow cylinder is arranged at the lower end of the outer cylinder, is positioned outside the sorting body, and comprises a bottom ring body connected with the lower end face of the outer cylinder and a lower charging barrel fixedly arranged along the inner side edge of the bottom ring body, wherein a middle flow channel is formed on the bottom ring body, a underflow opening is formed at the lower end of the lower charging barrel, and a underflow channel is formed between the inner wall of the lower charging barrel and the outer wall of the conical barrel;
the middle flow barrel is connected with the lower part of the bottom flow barrel, a middle flow port is arranged at the lower end of the middle flow barrel, and the lower end of the lower charging barrel penetrates out of the bottom surface of the middle flow barrel downwards.
Through adopting above-mentioned technical scheme, the coal slime stirs and the misce bene back through the ore pulp agitator, the pump goes into the pan feeding pipe, the coal slime is along pan feeding pipe downstream, the coal slime flows down along the side surface of cone, form the decline sloping flow, at this in-process, the high density coarse grain is at first subsides to the bottom of cone side surface, inferior high density coarse grain is located the upper strata of high density coarse grain, and fine grain and low density are then at the superiors, the automatic layering of material is realized to the settlement in-process at this interference. After the material falls on the bottom of the side surface of the cone, the flow direction is changed, the material flows upwards along the inner wall of the cone due to inertia to form ascending inclined flow, in the process, the material has kinetic energy along the radial direction and the axial direction of the cone at the same time, high-density coarse particles firstly settle, move downwards through an underflow channel, and are discharged from an underflow port along the inner wall surface of a lower charging barrel to become tailings; the secondary high-density coarse particles move in a parabolic track, obliquely upwards cross the lower charging barrel, downwards enter the middle flow barrel through the middle flow channel, and are discharged from the middle flow port to become the middlings; the fine particles and the low-density coarse particles move upwards under the action of a flow field formed by the ascending material flow and are discharged from an overflow port to become clean coal. The coal slime is divided into three parts, namely tailing, middling and clean coal, the separation effect is effectively enhanced, and the waste of resources is reduced.
Preferably, a mounting disc is fixed to the lower end of the feeding pipe, a plurality of screws are arranged on the mounting disc along the circumferential direction, the screws are in threaded connection with the mounting disc, the lower ends of the screws penetrate through the cone downwards, two nuts are in threaded connection with the lower end of each screw respectively, and the two nuts are located on the upper side and the lower side of the cone respectively.
By adopting the technical scheme, the end of the screw abuts against the upper surface of the mounting disc, and the side end faces of the two nuts clamp the cone; through the cooperation of nut and screw rod, not only can realize the installation of selecting separately the body and fix, simultaneously through with selecting separately the body along screw rod axial displacement, still can change the distance between cone and the pan feeding pipe bottom port to change the unloading speed of material and the width of underflow passageway.
Preferably, the side surface of the cone and the inner wall surface of the cone barrel are in smooth transition through a circular arc.
Through adopting above-mentioned technical scheme, when the sloping stream that descends moved to the bottom of cone, can turn to along the arc surface level and smooth, formed ascending sloping stream, avoided the material to collide in the bottom of cone, caused energy loss, guaranteed going on smoothly of material sorting process.
Preferably, a plurality of overflow ports are uniformly arranged along the circumferential direction of the side wall of the outer cylinder.
By adopting the technical scheme, the number of clean coal output channels is increased by arranging the overflow ports, so that the flow field distribution is more uniform, and clean coal is more easily output to the outside of the outer cylinder body.
Preferably, the middle flow channel is uniformly provided with a plurality of groups along the circumferential direction of the bottom ring body, and the cross section of the middle flow channel in each group is arc-shaped.
Through adopting above-mentioned technical scheme, increased the flow area of material, the time high density coarse grain more easily passes through the mesolow passageway.
Preferably, the bottom surface of the middle flow cylinder is an inclined surface, and the middle flow port is arranged at the lowest part of the bottom surface of the middle flow cylinder.
Through adopting above-mentioned technical scheme, after the middlings after the separation fell into the well fluid barrel downwards by well flow channel, can discharge from the midstream mouth along the bottom surface downstream of well fluid barrel, played certain guide effect, more be favorable to the output of middlings.
Preferably, the lower end of the underflow cylinder is fixedly provided with a water inlet pipe, one end of the water inlet pipe extends into the underflow cylinder and is provided with a spray head at the end part, and the side wall of the spray head is circumferentially provided with a plurality of water spray holes.
By adopting the technical scheme, in the separation process of the coal slime, water flow is pumped into the water inlet pipe and upwards sprayed out through the water spraying holes, the spraying direction of the water flow is opposite to the moving direction of materials in the underflow channel, the effective impact effect is exerted on tail coal particles in the underflow channel, coarse particles or fine particles with lower density move upwards along the underflow channel and enter the flow field at the upper part of the underflow barrel again, the tail coal particles move in the opposite water flow to realize secondary separation, the separation effect is further enhanced, and the waste of energy is avoided.
Preferably, the axis of the spray head coincides with the axis of the feeding pipe, and the axis of the water spray hole is obliquely and upwards arranged.
By adopting the technical scheme, the bottom flow channel is an inclined channel, the water spraying holes are arranged in an inclined mode, water flow sprayed out of the water spraying holes can be sprayed upwards in an annular mode in a diverging mode, the movement of the water flow is opposite to that of materials, the water flow jacking force effect is stronger, and secondary separation is facilitated.
To sum up, the application comprises the following beneficial technical effects:
1. the coal slime stirs and behind the misce bene through the ore pulp agitator, pump into the pan feeding pipe, the coal slime is along pan feeding pipe downstream, the coal slime flows downwards along the side surface of cone, form the decline inclined plane and flow, at this in-process, the high density coarse grain is at first subsides to the bottom of cone side surface, inferior high density coarse grain is located the upper strata of high density coarse grain, and fine grain and low density are then at the superiors, the automatic layering of material is realized to the settlement in-process in this interference. After the material falls on the bottom of the side surface of the cone, the flow direction is changed, the material flows upwards along the inner wall of the cone due to inertia to form ascending inclined flow, in the process, the material has kinetic energy along the radial direction and the axial direction of the cone at the same time, high-density coarse particles firstly settle, move downwards through an underflow channel, and are discharged from an underflow port along the inner wall surface of a lower charging barrel to become tailings; the secondary high-density coarse particles move in a parabolic track, obliquely upwards cross the lower charging barrel, downwards enter the middle flow barrel through the middle flow channel, and are discharged from the middle flow port to become the middlings; the fine particles and the low-density coarse particles move upwards under the action of a flow field formed by the ascending material flow and are discharged from an overflow port to become clean coal. The automatic separation of the coal slime is realized in the process, the coal slime is divided into three parts, namely tailing, middling and clean coal, the separation effect is effectively enhanced, and the waste of resources is reduced.
2. The water inlet pipe is arranged at the lower part of the underflow cylinder body, so that the sorted tail coal can be sorted secondarily under the hydraulic action, and the sorting effect is further enhanced.
Drawings
Fig. 1 is a schematic overall structure diagram according to an embodiment of the present application.
FIG. 2 is a cross-sectional view taken along the plane of the axis of the inlet tube in FIG. 1.
Fig. 3 is a schematic structural diagram showing the structure of the laminar flow cylinder in fig. 2 and the position relationship between the laminar flow cylinder and the sorting body.
In the figure, 1, an outer cylinder body; 11. an overflow port; 2. a feeding pipe; 21. mounting a disc; 22. a screw; 23. a nut; 3. sorting the bodies; 31. a cone; 32. a conical cylinder; 4. an underflow cylinder; 41. a bottom ring body; 42. feeding the material barrel; 43. a underflow port; 44. an underflow channel; 45. a middle flow channel; 5. a middle flow cylinder; 51. a middle flow port; 6. a water inlet pipe; 61. a spray head; 62. and (4) water spray holes.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Referring to fig. 1 and 2, a coal slime separation system disclosed in an embodiment of the present application includes an outer cylinder 1, a feeding pipe 2, a separation body 3, an underflow cylinder 4, and an underflow cylinder 5.
The upper end of the outer cylinder body 1 is provided with a closed opening, the lower end of the outer cylinder body 1 is provided with an opening, and the upper part of the side wall of the outer cylinder body 1 is provided with an overflow port 11; the top wall fixed connection of pan feeding pipe 2 and outer barrel 1 sets up with outer barrel 1 is coaxial, and the top surface of outer barrel 1 is upwards passed to the one end of pan feeding pipe 2, and the other end stretches into outside barrel 1 inside downwards.
Referring to fig. 2 and 3, the sorting body 3 is connected to the lower end of the feeding pipe 2, the sorting body 3 comprises a cone 31 and a cone barrel 32, the axis of the cone 31 is coincident with the axis of the feeding pipe 2, and the tip of the cone 31 faces the lower port of the feeding pipe 2; the smaller end of the cone 32 is fixedly connected with the bottom edge of the cone 31, the opening of the cone 32 faces the feeding pipe 2, and a concave material sorting area is formed between the side surface of the cone 31 and the inner wall surface of the cone 32.
The underflow cylinder body 4 comprises a bottom ring body 41 and a blanking cylinder 42, the outer edge of the bottom ring body 41 is fixedly connected with the lower end face of the outer cylinder body 1, and a middle flow channel 45 is formed in the bottom ring body 41; the lower charging barrel 42 is a conical barrel, the upper end of which is fixedly connected with the inner edge of the bottom ring body 41, and the lower end of the lower charging barrel 42 is fixedly provided with a bottom flow port 43. It should be noted that the axes of the blanking cylinder 42 and the conical cylinder 32 are overlapped, and the conicity of the blanking cylinder 42 is the same as that of the conical cylinder 32; the sorting body 3 is integrally positioned in a lower charging barrel 42, and an underflow channel 44 for the falling of materials is formed between the inner wall of the lower charging barrel 42 and the outer wall of the conical barrel 32.
The upper end of the middle flow cylinder body 5 is provided with an opening, the bottom of the middle flow cylinder body is provided with a middle flow port 51, the upper end surface of the middle flow cylinder body 5 is fixedly connected with the lower surface of the bottom ring body 41, and the middle flow cylinder body is covered outside the lower charging barrel 42; the lower end of the lower feed cylinder 42 passes through the bottom surface of the middle flow cylinder 5 downwards and is fixedly connected with the bottom surface of the middle flow cylinder 5, a closed space is formed between the middle flow cylinder 5 and the lower feed cylinder 42, and materials can fall into the middle flow cylinder 5 through the middle flow channel 45 and can be discharged from the middle flow port 51.
In the embodiment of the present application, through holes are formed in the lower end portion of the outer cylinder 1, the bottom ring body 41, and the upper end portion of the middle flow cylinder 5, bolts are inserted into the through holes, and the three are connected into a whole through the bolts, which facilitates the installation and the disassembly.
The coal slime stirs and behind the misce bene through the ore pulp agitator, pump into pan feeding pipe 2, the coal slime moves down along pan feeding pipe 2, the coal slime flows downwards along the side surface of cone 31, form the decline inclined plane and flow, at this in-process, the high density coarse grain is at first subsides to the bottom of cone 31 side surface, inferior high density coarse grain is located the upper strata of high density coarse grain, and fine grain and low density are then in the superiors, the automatic layering of material is realized to the in-process at this interference settlement. After the material falls on the bottom of the side surface of the cone 31, the flow direction is changed, the material flows upwards along the inner wall of the cone 32 due to inertia to form an ascending inclined flow, in the process, the material has kinetic energy along the radial direction and the axial direction of the cone 32 simultaneously, high-density coarse particles firstly settle, move downwards through the underflow channel 44 and are discharged from the underflow port 43 along the inner wall surface of the lower charging barrel 42 to become tailings; the secondary high-density coarse particles move in a parabolic track, obliquely upwards cross the lower charging barrel 42, downwards enter the middle flow barrel body 5 through the middle flow channel 45, and are discharged from the middle flow port 51 to become the middlings; the fine particles and the low-density coarse particles move upwards under the action of a flow field formed by the ascending material flow and are discharged from the overflow port 11 to become clean coal. The automatic separation of the coal slime is realized in the process, the coal slime is divided into three parts, namely tailing, middling and clean coal, the separation effect is effectively enhanced, and the waste of resources is reduced.
Referring to fig. 2, a mounting plate 21 is fixedly connected to the lower end of the feeding pipe 2, a plurality of screws 22 are circumferentially arranged on the mounting plate 21, the screws 22 are in threaded connection with the mounting plate 21, the axis of each screw 22 is parallel to the axis of the feeding pipe 2, the screws 22 downwardly penetrate through the cone 31, two nuts 23 are respectively in threaded connection with the lower end of each screw 22, and the two nuts 23 are respectively located on the upper side and the lower side of the cone 31. The end of the screw 22 is abutted against the upper surface of the mounting disc 21, and the side end faces of the two nuts 23 clamp the cone 31; through the cooperation of the nut 23 and the screw 22, not only can the installation and fixation of the sorting body 3 be realized, but also the distance between the cone 31 and the lower port of the feeding pipe 2 can be changed by moving the sorting body 3 along the axial direction of the screw 22, so as to change the blanking speed of the material and the width of the underflow channel 44.
Referring to fig. 3, the lower portion of the side surface of the cone 31 and the inner wall surface of the cone 32 are in smooth transition through an arc, and when the descending inclined flow moves to the bottom of the cone 31, the descending inclined flow can smoothly turn along the arc surface to form ascending inclined flow, so that the collision of materials at the bottom of the cone 31 is avoided, the energy loss is avoided, and the smooth proceeding of the material sorting process is ensured.
Well flow channel 45 has evenly seted up the multiunit along the circumference of bottom ring body 41, and every well flow channel 45 all sets up to the arc moreover, has increased the flow area of material, and inferior high density coarse grain more passes through well flow channel 45 easily.
Referring to fig. 1 and 2, further, a plurality of overflow ports 11 are uniformly arranged along the circumferential direction of the side wall of the outer cylinder 1, and since the single overflow port 11 causes nonuniformity of the flow field inside the outer cylinder 1, the number of clean coal output channels is increased by the arrangement of the plurality of overflow ports 11, so that the flow field is more uniformly distributed, and clean coal is more easily output to the outside of the outer cylinder 1.
Furthermore, the bottom surface of the middle flow cylinder 5 is provided with an inclined surface, the middle flow port 51 is arranged at the lowest part of the bottom surface of the middle flow cylinder 5, and the sorted middlings fall into the middle flow cylinder 5 from the middle flow channel 45, can move downwards along the bottom surface of the middle flow cylinder 5 and are discharged from the middle flow port 51, so that a certain guiding effect is achieved, and the output of the middlings is more facilitated.
Referring to fig. 2 and 3, the lower end of the underflow cylinder 4 is also fixedly provided with a water inlet pipe 6, the water inlet pipe 6 is fixedly connected with the cylinder wall of the underflow cylinder 4, one end of the water inlet pipe is obliquely arranged and penetrates out of the underflow cylinder 4, and the other end of the water inlet pipe is positioned in the underflow cylinder 4 and is arranged in a vertical state and is superposed with the axis of the feeding pipe 2; the shower nozzle 61 is installed to the upper end of inlet tube 6, and shower nozzle 61 specifically is the cylinder, and its inside and pan feeding pipe 2 intercommunication have evenly seted up a plurality of hole for water spraying 62 along circumference on the lateral wall of shower nozzle 61.
In the process of separating the coal slime, water flow is pumped into the water inlet pipe 6 and is upwards sprayed out through the water spraying holes 62, the spraying direction of the water flow is opposite to the moving direction of materials in the underflow channel 44, the tail coal particles in the underflow channel 44 are effectively impacted, the coarse particles or the fine particles with lower density move upwards along the underflow channel 44 and enter the flow field at the upper part of the underflow barrel 4 again, the tail coal particles move in the opposite water flow to realize secondary separation, the separation effect is further enhanced, and the waste of energy is avoided.
Further, the axes of the water spraying holes 62 are arranged obliquely upward, and in the embodiment of the present application, the angle between the axes of the water spraying holes 62 and the axis of the nozzle 61 is 45 °. Because the underflow passage 44 is an inclined passage, the water spray holes 62 are arranged obliquely, the water flow sprayed out from the water spray holes 62 can be sprayed upwards in a divergent annular shape, and the jacking force effect of the water flow is stronger and is beneficial to secondary separation.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A coal slurry sorting system, comprising:
the lower end of the outer cylinder body (1) is provided with an opening, and the upper part of the side wall of the outer cylinder body is provided with an overflow port (11);
the feeding pipe (2) is arranged in the center of the top wall of the outer cylinder body (1), and the lower end of the feeding pipe extends into the outer cylinder body (1);
the sorting body (3) is arranged at the lower end of the feeding pipe (2) and comprises a cone (31) and a cone cylinder (32) arranged along the edge of the bottom of the cone (31), the axis of the cone (31) is overlapped with the axis of the feeding pipe (2), the tip of the cone (31) faces the lower port of the feeding pipe (2), the opening of the cone cylinder (32) faces the feeding pipe (2), and a material sorting area is formed between the side surface of the cone (31) and the inner wall surface of the cone cylinder (32);
the underflow cylinder body (4) is arranged at the lower end of the outer cylinder body (1), is positioned on the outer side of the sorting body (3), and comprises a bottom ring body (41) connected with the lower end face of the outer cylinder body (1) and a lower charging barrel (42) fixedly arranged along the edge of the inner side of the bottom ring body (41), wherein a middle flow channel (45) is formed in the bottom ring body (41), a underflow opening (43) is formed in the lower end of the lower charging barrel (42), and a bottom flow channel (44) is formed between the inner wall of the lower charging barrel (42) and the outer wall of the conical barrel (32);
the middle flow cylinder body (5) is connected with the lower part of the underflow cylinder body (4), the lower end of the middle flow cylinder body is provided with a middle flow opening (51), and the lower end of the lower charging barrel (42) penetrates out of the bottom surface of the middle flow cylinder body (5) downwards;
the coal slime moves downwards along the feeding pipe (2), the coal slime flows downwards along the side surface of the cone (31) to form a descending inclined flow, in the process, high-density coarse particles firstly sink to the bottom of the side surface of the cone (31), secondary high-density coarse particles are positioned on the upper layer of the high-density coarse particles, fine particles and low density particles are positioned on the uppermost layer, and the automatic layering of materials is realized in the process of disturbing the settling; after the material falls on the bottom of the side surface of the cone (31), the flow direction is changed, the material upwards flows along the inner wall of the cone (32) due to inertia to form an ascending inclined flow, in the process, the material simultaneously has kinetic energy along the radial direction and the axial direction of the cone (32), high-density coarse particles firstly settle, move downwards through the underflow passage (44), and are discharged from the underflow port (43) along the inner wall surface of the lower charging barrel (42) to become tailings; the secondary high-density coarse particles move in a parabolic track, obliquely upwards cross the lower charging barrel (42), downwards enter the middle flow barrel (5) through the middle flow channel (45), and are discharged from the middle flow port (51) to become middlings; the fine particles and the low-density coarse particles move upwards under the action of a flow field formed by the ascending material flow and are discharged from the overflow port (11) to become clean coal.
2. The coal slurry separation system of claim 1, wherein: the lower tip of pan feeding pipe (2) is fixed with mounting disc (21), be provided with a plurality of screw rods (22) along circumference on mounting disc (21), screw rod (22) and mounting disc (21) threaded connection, cone (31) are passed downwards to the lower extreme of screw rod (22), the lower tip of screw rod (22) threaded connection respectively has two nuts (23), two nut (23) are located the upper and lower both sides of cone (31) respectively.
3. The coal slurry separation system of claim 1, wherein: the side surface of the cone (31) and the inner wall surface of the cone cylinder (32) are in smooth transition through an arc.
4. The coal slurry separation system of claim 1, wherein: the overflow ports (11) are uniformly arranged along the circumferential direction of the side wall of the outer cylinder body (1).
5. The coal slurry separation system of claim 1, wherein: the middle flow channels (45) are evenly provided with a plurality of groups along the circumferential direction of the bottom ring body (41), and the cross sections of the middle flow channels (45) in each group are arc-shaped.
6. The coal slurry separation system of claim 1, wherein: the bottom surface of the middle flow cylinder body (5) is an inclined surface, and the middle flow port (51) is arranged at the lowest part of the bottom surface of the middle flow cylinder body (5).
7. The coal slurry separation system according to any one of claims 1 to 6, wherein: the underflow cylinder body (4) is fixedly provided with a water inlet pipe (6) at the lower end, one end of the water inlet pipe (6) extends into the underflow cylinder body (4) and is provided with a spray head (61) at the end part, and the side wall of the spray head (61) is provided with a plurality of water spray holes (62) along the circumferential direction.
8. The coal slurry separation system of claim 7, wherein: the axis of the spray head (61) coincides with the axis of the feeding pipe (2), and the axis of the water spray hole (62) is obliquely and upwards arranged.
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