CN109746183B - Multistage vibration screening equipment for coal and gangue separation - Google Patents
Multistage vibration screening equipment for coal and gangue separation Download PDFInfo
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- CN109746183B CN109746183B CN201910078474.0A CN201910078474A CN109746183B CN 109746183 B CN109746183 B CN 109746183B CN 201910078474 A CN201910078474 A CN 201910078474A CN 109746183 B CN109746183 B CN 109746183B
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Abstract
The invention provides a multistage vibrating screening device for separating coal and gangue. The multistage vibrating screening equipment for separating the coal and the gangue comprises a supporting mechanism; a delivery box; a transport mechanism; the device comprises a blanking mechanism, a feeding mechanism and a transmission mechanism, wherein the blanking mechanism comprises an installation box and a coal powder box; the feeding mechanism is arranged at the top of the pulverized coal box and comprises a first screen, a base and a box body; the transmission mechanism comprises a second screen, a connecting plate, a screen frame, a driving plate, a connecting shaft and a sliding chute, the inside of the installation box is obliquely and slidably connected with the screen frame, one half of the area of the screen frame is of a solid structure, and the other half of the area of the screen frame is relatively welded with a plurality of groups of the second screen and the connecting plate. The multistage vibration screening equipment for coal and gangue separation provided by the invention can be used for carrying out multistage screening on coal and gangue, has strong linkage, avoids blockage and improves the production efficiency.
Description
Technical Field
The invention relates to the technical field of coal gangue screening, in particular to a multistage vibration screening device for coal gangue sorting.
Background
The coal gangue is solid waste discharged in the coal mining process and the coal washing process, and is a black and gray rock which has lower carbon content and is harder than coal and is associated with a coal bed in the coal forming process. Comprises tunneling waste rocks in the tunneling process of a roadway, waste rocks extracted from a top plate, a bottom plate and an interlayer in the mining process, and washing waste rocks extracted in the coal washing process.
The existing coal and gangue screening is directly carried out with X-ray separation, which is very likely to cause blockage, separation precision reduction, influence on normal production and even cause major safety accidents, therefore, large-granularity raw coal particles and gangue mixed in raw coal must be crushed by a grading crusher before vibration screening, and in view of the above, the invention provides a multistage vibration screening device for coal and gangue separation, which has the following characteristics:
(1) the invention provides multistage vibration screening equipment for coal and gangue separation, wherein a first screen welded with a base is installed at the top of a coal powder box, coal and gangue are poured onto the surface of the first screen which is obliquely arranged, so that primary screening of the coal and gangue is realized, the primarily screened coal powder falls into the coal powder box, the coal and gangue falls onto the surface of a screen frame and is secondarily screened by a second screen, and comprehensive and uniform screening of the coal and gangue is realized due to the fact that the diameters of meshes of the first screen and the second screen are the same.
(2) The invention provides multistage vibration screening equipment for coal and gangue separation, wherein a transmission mechanism is arranged on the side wall of an installation box, a motor is connected with a power supply, so that a screen frame is moved along the top and bottom directions of the installation box by a driving plate, the second screen is further shaken inside the installation box, the blanking is convenient, the second screen and a connecting plate which are positioned on the surface of the screen frame are of an inverted V-shaped structure, and the coal and gangue can be shaken on the surface of the second screen conveniently and can be screened comprehensively.
Disclosure of Invention
The invention solves the technical problem of providing a multistage vibration screening device for coal and gangue separation, wherein a first screen welded with a base is arranged at the top of a coal powder box, the coal and gangue are poured on the surface of the first screen which is arranged in an inclined way to realize primary screening of the coal and gangue, the primarily screened coal powder falls into the coal powder box, the coal and gangue falls onto the surface of a screen frame to be screened secondarily by a second screen, the comprehensive and uniform screening of the coal and gangue is realized because the diameters of meshes of the first screen and the second screen are the same, a transmission mechanism is arranged on the side wall of an installation box, a motor is connected with a power supply to realize that a driving plate moves the screen frame along the top and the bottom directions of the installation box, the shaking of the second screen in the installation box is further realized, the blanking is convenient, the second screen and a connecting plate which are positioned on the surface of the screen frame are of an inverted V-shaped structure, the shaking of the coal and gangue on the surface of the second screen is convenient, and (6) screening comprehensively.
In order to solve the technical problems, the multistage vibration screening device for separating the coal and the gangue comprises a supporting mechanism for supporting, a conveying box for separating the coal and the gangue, a conveying mechanism for conveying the coal and the gangue, a discharging mechanism for discharging the screened coal and the gangue, a feeding mechanism for feeding the coal and the gangue, and a transmission mechanism for linking the discharging mechanism; wherein the conveying box is arranged at the top of the supporting mechanism; the conveying mechanism is arranged at the top of the conveying box; the blanking mechanism is arranged at the top of the conveying box and comprises an installation box and a coal powder box, the installation box which is hollow inside, is provided with an opening at the top and an opening on the side wall is arranged at the top of the conveying box, the coal powder box which penetrates through the inside of the installation box is arranged on the side wall of the conveying box, and the coal powder box extends to the side wall of the installation box; the feeding mechanism is arranged at the top of the pulverized coal box; the feeding mechanism comprises a first screen, a base and a box body, the base is installed at the top of the pulverized coal box, the first screen which is obliquely arranged is installed inside the base, and the box body which is hollow inside is installed at the top of the conveying box; the transmission mechanism is arranged in the installation box; the transmission mechanism comprises a second screen, a connecting plate, a screen frame, a driving plate, a connecting shaft and a sliding groove, the inside of the installation box is in inclined sliding connection with the screen frame, one half of the area of the screen frame is of a solid structure, a plurality of groups of the second screen and the connecting plate are welded to the other half of the area of the screen frame in a relative mode, the connecting shaft penetrates through the side wall of the installation box, one end of the sliding groove is welded to the screen frame, one end of the connecting shaft, which deviates from the screen frame, is connected with the driving plate in a rotating mode, and one end of the driving plate, which deviates from the connecting shaft, is connected with the transmission mechanism in a rotating.
Preferably, transport mechanism includes protecting frame, feed inlet, motor, driving roller, conveyer belt and goes out the hopper, the top fixed connection of conveying case the protecting frame, the top of conveying case seted up with the protecting frame corresponds the feed inlet, the inside of conveying case is rotated and is connected two the driving roller, the conveyer belt twines in two the surface of driving roller, the lateral wall of conveying case install with one of them the driving roller rotates to be connected the motor, the welding is installed to the bottom of the one end of conveyer belt the conveying bottom of the case portion go out the hopper, the drive plate deviates from the one end and one of them of connecting axle the lateral wall of driving roller rotates to be connected, the bank of screens extends to the top of protecting frame.
Preferably, the diameters of the meshes of the first screen and the second screen are both 6mm, and the cross sections of the second screen and the connecting plate are in an inverted V-shaped structure.
Preferably, canceling release mechanical system is installed to the medial surface of protection frame, canceling release mechanical system includes spliced pole, slider, traveller, stopper and spring, the medial surface sliding connection of protection frame two with the spliced pole rotates to be connected the slider, the other end of spliced pole with the bank of screens rotates to be connected, the lateral wall welding of slider the traveller, the welding of half department of traveller the stopper is located stopper one side the surface winding of traveller the spring.
Preferably, pneumatic mechanism is installed at the top of transfer box, pneumatic mechanism includes gasbag case, push pedal, inlet port, outlet duct, gasbag and play gas nozzle, the top welding of transfer box has the gasbag case, the traveller slide in the inside one end welding of gasbag case is the arc structure the push pedal, the internally mounted surface of gasbag case is seted up the inlet port the gasbag, the bottom intercommunication of gasbag the outlet duct, the outlet duct runs through the inside one end of buggy incasement portion with go out the gas nozzle intercommunication, the buggy case is relative the lateral wall that goes out the gas nozzle is the arc structure.
Preferably, the supporting mechanism comprises supports, supporting plates, electromagnetic vibrators and pressure springs, the four pressure springs fixedly connected with the supports are installed at the bottom of the conveying box, the supporting plates are installed among the four supports, and the electromagnetic vibrators are installed on the surfaces of the supporting plates, wherein the tops of the electromagnetic vibrators are rotatably connected with the bottom of the conveying box.
Compared with the related art, the multistage vibrating screening equipment for separating the coal and the gangue, provided by the invention, has the following beneficial effects:
(1) the invention provides multistage vibration screening equipment for coal and gangue separation, wherein a first screen mesh welded with an invention base is arranged at the top of a coal powder box, the coal and gangue are poured on the surface of the first screen mesh which is obliquely arranged to realize primary screening of the coal and gangue, the primarily screened coal powder falls into the invention coal powder box, the coal and gangue falls on the surface of an invention screen frame to be screened secondarily by a second screen mesh, and the first screen mesh and the second screen mesh have the same diameter, so that comprehensive and uniform screening of the coal and gangue is realized.
(2) The invention provides multistage vibration screening equipment for coal and gangue separation, wherein a transmission mechanism is arranged on the side wall of an invention mounting box, the invention motor is connected with a power supply to realize that an invention driving plate moves an invention screen frame along the top and bottom directions of the invention mounting box, the invention second screen is shaken inside the invention mounting box to facilitate blanking, and the invention second screen and an invention connecting plate which are positioned on the surface of the invention screen frame are of an inverted V-shaped structure to facilitate the shaking and comprehensive screening of coal and gangue on the surface of the invention second screen.
Drawings
FIG. 1 is a schematic overall structure diagram of a preferred embodiment of a multi-stage vibratory screening apparatus for gangue separation according to the present invention;
FIG. 2 is a schematic view of the connection between the driving roller and the driving mechanism shown in FIG. 1;
FIG. 3 is an enlarged view of the part A shown in FIG. 1;
FIG. 4 is a schematic view of the connection of the protection frame, the reset mechanism and the transmission mechanism shown in FIG. 1;
fig. 5 is a schematic view of the internal structure of the pulverized coal box shown in fig. 1.
Reference numbers in the figures: 1. the device comprises a conveying mechanism, 11, a protective frame, 12, a feeding hole, 13, a motor, 14, a driving roller, 15, a conveying belt, 16, a discharging hopper, 2, a feeding mechanism, 21, a first screen, 22, a base, 23, a box body, 3, a discharging mechanism, 31, an installation box, 32, a coal powder box, 4, a conveying box, 5, a supporting mechanism, 51, a support, 52, a supporting plate, 53, an electromagnetic vibrator, 54, a pressure spring, 6, a driving mechanism, 61, a second screen, 62, a connecting plate, 63, a screen frame, 64, a driving plate, 65, a connecting shaft, 66, a sliding groove, 7, a resetting mechanism, 71, a connecting column, 72, a sliding block, 73, a sliding column, 74, a limiting block, 75, a spring, 8, a pneumatic mechanism, 81, an air bag box, 82, a push plate, 83, an air inlet hole, 84, an air outlet pipe, 85, an.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 in combination, a multistage vibrating screening apparatus for separating coal and gangue includes a supporting mechanism 5 for supporting, a conveying box 4 for separating coal and gangue, a conveying mechanism 1 for conveying coal and gangue, a blanking mechanism 3 for blanking screened coal and gangue, a feeding mechanism 2 for feeding coal and gangue, and a transmission mechanism 6 for linking the blanking mechanism 3, wherein the conveying box 4 is mounted at the top of the supporting mechanism 5; the conveying mechanism 1 is arranged at the top of the conveying box 4; the blanking mechanism 3 is mounted at the top of the conveying box 4, the blanking mechanism 3 comprises a mounting box 31 and a coal powder box 32, the mounting box 31 which is hollow inside, is open at the top and is open on the side wall is mounted at the top of the conveying box 4, the coal powder box 32 which penetrates through the mounting box 31 is mounted on the side wall of the conveying box 4, and the coal powder box 32 extends to the side wall of the mounting box 31; the feeding mechanism 2 is installed at the top of the pulverized coal box 32, the feeding mechanism 2 comprises a first screen 21, a base 22 and a box body 23, the base 22 is installed at the top of the pulverized coal box 32, the first screen 21 which is obliquely arranged is installed inside the base 22, and the box body 23 which is hollow inside is installed at the top of the conveying box 4; the transmission mechanism 6 is installed inside the installation box 31, the transmission mechanism 6 includes a second screen 61, a connecting plate 62, a screen frame 63, a driving plate 64, a connecting shaft 65 and a sliding groove 66, the installation box 31 is connected with the screen frame 63 in an inclined sliding manner, one half of the area of the screen frame 63 is of a solid structure, the other half of the area of the screen frame 63 is welded with a plurality of groups of the second screen 61 and the connecting plate 62, the connecting shaft 65 penetrates through the side wall of the installation box 31, one end of the sliding groove 66 is welded with the screen frame 63, one end of the connecting shaft 65 departing from the screen frame 63 is connected with the driving plate 64 in a rotating manner, and one end of the driving plate 64 departing from the connecting shaft 65 is connected with the transmission mechanism 1 in a rotating manner.
Specifically, transport mechanism 1 includes protecting frame 11, feed inlet 12, motor 13, driving roller 14, conveyer belt 15 and play hopper 16, the top fixed connection of transport case 4 protecting frame 11, the top of transport case 4 seted up with protecting frame 11 corresponds feed inlet 12, the inside of transport case 4 is rotated and is connected two driving roller 14, conveyer belt 15 twines in two the surface of driving roller 14, one of them is installed to the lateral wall of transport case 4 driving roller 14 rotates and is connected motor 13, the welding is installed to the bottom of the one end of conveyer belt 15 the play hopper 16 of transport case 4 bottom, drive plate 64 deviates from the one end of connecting axle 65 and one of them the lateral wall of driving roller 14 rotates and is connected, bank 63 extends to the top of protecting frame 11, the process coal gangue that second screen cloth 61 sieved flows from feed inlet 12 flows the surface of conveyer belt 15 And finally flows into the discharge hopper 16 to flow to the next process to screen the larger coal gangue by using X-rays.
Specifically, first screen cloth 21 with the mesh diameter of second screen cloth 61 is 6mm, second screen cloth 61 with the cross-section of connecting plate 62 is "V" shape structure of falling, has realized screening twice to the coal gangue, and comprehensive sorting of buggy is in the inside of buggy case 32.
Specifically, the reset mechanism 7 is installed on the inner side surface of the protection frame 11, the reset mechanism 7 includes a connection column 71, two sliders 72, a sliding column 73, a limit block 74 and a spring 75, the inner side surface of the protection frame 11 is slidably connected with the two sliders 72 rotatably connected with the connection column 71, the other end of the connection column 71 is rotatably connected with the screen frame 63, the side wall of each slider 72 is welded with the corresponding sliding column 73, the limit block 74 is welded at one half of the corresponding sliding column 73, the surface of the corresponding sliding column 73 located on one side of the limit block 74 is wound around the corresponding spring 75, one of the transmission rollers 14 rotates to drive the drive plate 64 to slide the screen frame 63 up and down in the installation box 31, when the screen frame 63 moves to the bottom of the installation box 31, the sliding column 73 moves towards the spring 75, the spring 75 contracts, and when the screen frame 63 moves towards the top of the installation box 31, the spring 75 resets, the sliding column 73 moves away from the spring 75, so that the shaking of the screen frame 63 shakes the gangue on the surface of the second screen 61.
Specifically, the pneumatic mechanism 8 is installed at the top of the conveying box 4, the pneumatic mechanism 8 comprises an air bag box 81, a push plate 82, an air inlet 83, an air outlet pipe 84, an air bag 85 and an air outlet nozzle 86, the air bag box 81 is welded at the top of the conveying box 4, the sliding column 73 slides in the push plate 82 which is welded at one end inside the air bag box 81 and has an arc-shaped structure, the air bag 85 of the air inlet 83 is arranged on the inner installation surface of the air bag box 81, the bottom of the air bag 85 is communicated with the air outlet pipe 84, the air outlet pipe 84 penetrates through one end inside the coal powder box 32 and is communicated with the air outlet nozzle 86, the coal powder box 32 is of an arc-shaped structure relative to the side wall of the air outlet nozzle 86, when the screen frame 63 moves to the bottom of the installing box 31, the sliding column 73 moves towards the spring 75 and the spring 75 contracts, at this time, the sliding column 73, the push plate 82 will the gasbag 85 is flat, and gas is followed outlet duct 84 blows the inside of going out the tuyere 86, and then has realized that gas will the buggy of buggy case 32 lateral wall is blown down, avoids blockking up, the bank of screens 63 to when the top direction of installing bin 31 moves spring 75 resets, the traveller 73 deviates from when the spring 75 direction removed, gasbag 81 resets.
Specifically, the supporting mechanism 5 comprises a support 51, a supporting plate 52, an electromagnetic vibrator 53 and a pressure spring 54, the bottom of the conveying box 4 is provided with four pressure springs 54 fixedly connected with the support 51, the supporting plate 52 is arranged between the supports 51, the surface of the supporting plate 52 is provided with the electromagnetic vibrator 53, the top of the electromagnetic vibrator 53 is rotatably connected with the bottom of the conveying box 4, the electromagnetic vibrator 53 is connected with a power supply to realize shaking of the top mechanism of the conveying box 4, and the first screen 21 is used for assisting in screening coal powder.
The working principle of the multistage vibration screening equipment for separating the coal and the gangue provided by the invention is as follows:
(1) to the inside gangue that does not sieve of base 22 adds, first screen cloth 21 be the slope install in the inside of base 22, the unloading of being convenient for, the gangue falls into less buggy behind the inside of first screen cloth 21 falls into the inside of buggy case 32, and complete gangue that does not sieve rolls inside install bin 31 the surface of bank 63, less buggy fall by second screen cloth 61 sieves and drops the inside of buggy case 32 will motor 13 switch on power realizes driving roller 14 rotates, further realization drive plate 64 is followed the top of install bin 31, bottom direction remove, and then realized drive plate 64 will connecting axle 65 is in slide from top to bottom in the inside of spout 66, finally realized second screen cloth 61 carries out secondary screening to the gangue, and great gangue falls the surface of conveyer belt 15 is transported to carry out next X ray screening after the inside of play hopper 16 and sieve with the X ray (ii) a
(2) Then, when one of the driving rollers 14 rotates, the driving plate 64 is driven to slide the screen frame 63 up and down in the installation box 31, when the screen frame 63 moves to the bottom of the installation box 31, the sliding column 73 moves towards the spring 75, the spring 75 contracts, when the screen frame 63 moves towards the top of the installation box 31, the spring 75 resets, the sliding column 73 moves away from the spring 75, so that the shaking of the screen frame 63 shakes the coal gangue on the surface of the second screen 61, when the screen frame 63 moves to the bottom of the installation box 31, the sliding column 73 moves towards the spring 75, the spring 75 contracts, when the sliding column 73 slides towards the inside of the air bag box 81, the push plate 82 collapses the air bag 85, and air blows from the air outlet pipe 84 to the inside of the air outlet nozzle 86, the pulverized coal on the side wall of the pulverized coal box 32 is blown down by air, so that blockage is avoided, the spring 75 resets when the sieve frame 63 moves towards the top direction of the installation box 31, and the air bag 81 resets when the sliding column 73 moves away from the spring 75;
(3) finally, when the integral structure works, the electromagnetic vibrator 53 is powered on, so that the conveying box 4 is integrally shaken and matched with the base 22 to shake the coal and gangue on the surface of the first screen 21, and screening is facilitated.
Compared with the related art, the multistage vibrating screening equipment for separating the coal and the gangue, provided by the invention, has the following beneficial effects:
the invention provides multistage vibration screening equipment for coal and gangue separation, wherein a first screen 21 welded with a base 22 is installed at the top of a coal dust box 32, coal and gangue are poured onto the surface of the first screen 21 which is obliquely arranged to realize primary screening of the coal and gangue, the primarily screened coal dust falls into the coal dust box 32, the coal and gangue falls onto the surface of a screen frame 63 to be screened secondarily by a second screen 61, the comprehensive and uniform screening of the coal and gangue is realized due to the fact that the mesh diameters of the first screen 21 and the second screen 61 are the same, a transmission mechanism 6 is installed on the side wall of an installation box 31, a motor 13 is connected with a power supply, the driving plate 64 is enabled to move the screen frame 63 along the top and bottom directions of the installation box 31, and the second screen 61 is further enabled to shake in the installation box 31, make things convenient for the unloading, be located the bank of screens 63 surface second screen cloth 61 the connecting plate 62 is "V" shape structure of falling, and the gangue of being convenient for is in the surface shake of second screen cloth 61, comprehensive screening.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The multistage vibration screening device for coal and gangue separation is characterized by comprising a supporting mechanism (5) for supporting, a conveying box (4) for separating coal and gangue, a conveying mechanism (1) for conveying the coal and gangue, a blanking mechanism (3) for blanking the screened coal and gangue, a feeding mechanism (2) for feeding the coal and gangue and a transmission mechanism (6) for linking the blanking mechanism (3); wherein the conveying box (4) is arranged on the top of the supporting mechanism (5); the conveying mechanism (1) is arranged at the top of the conveying box (4); the blanking mechanism (3) is mounted at the top of the conveying box (4), the blanking mechanism (3) comprises a mounting box (31) and a coal powder box (32), the mounting box (31) which is hollow in the interior, open at the top and open on the side wall is mounted at the top of the conveying box (4), the coal powder box (32) which penetrates through the interior of the mounting box (31) is mounted on the side wall of the conveying box (4), and the coal powder box (32) extends to the side wall of the mounting box (31); the feeding mechanism (2) is arranged at the top of the pulverized coal box (32); the feeding mechanism (2) comprises a first screen (21), a base (22) and a box body (23), the base (22) is installed at the top of the pulverized coal box (32), the first screen (21) which is obliquely arranged is installed inside the base (22), and the box body (23) which is hollow inside is installed at the top of the conveying box (4); the transmission mechanism (6) is arranged in the installation box (31); wherein the transmission mechanism (6) comprises a second screen (61), a connecting plate (62), a screen frame (63), a driving plate (64), a connecting shaft (65) and a sliding groove (66), the inside of the mounting box (31) is connected with the sieve frame (63) in an inclined sliding manner, one half of the area of the sieve frame (63) is of a solid structure, the other half of the area of the screen frame (63) is oppositely welded with a plurality of groups of the second screen cloth (61) and the connecting plate (62), the connecting shaft (65) penetrates through one end of the sliding groove (66) on the side wall of the mounting box (31) and is welded with the screen frame (63), one end of the connecting shaft (65) departing from the sieve frame (63) is rotationally connected with the driving plate (64), one end of the driving plate (64) departing from the connecting shaft (65) is rotatably connected with the transmission mechanism (1).
2. The multistage vibrating and screening device for separating the coal and gangue as claimed in claim 1, wherein the conveying mechanism (1) comprises a protective frame (11), a feeding hole (12), a motor (13), transmission rollers (14), a conveying belt (15) and a discharging hopper (16), the top of the conveying box (4) is fixedly connected with the protective frame (11), the feeding hole (12) corresponding to the protective frame (11) is formed in the top of the conveying box (4), the conveying box (4) is rotatably connected with the two transmission rollers (14), the conveying belt (15) is wound on the surfaces of the two transmission rollers (14), the motor (13) rotatably connected with one of the transmission rollers (14) is installed on the side wall of the conveying box (4), the discharging hopper (16) welded to the bottom of the conveying box (4) is installed at the bottom of one end of the conveying belt (15), one end of the driving plate (64) departing from the connecting shaft (65) is rotatably connected with the side wall of one of the driving rollers (14), and the screen frame (63) extends to the top of the protective frame (11).
3. The multi-stage vibratory screening apparatus for gangue sorting of claim 1, wherein the first screen (21) and the second screen (61) each have a mesh diameter of 6mm, and the second screen (61) and the connecting plate (62) have an inverted "V" shaped cross-section.
4. The multistage vibrating and screening device for coal and gangue sorting according to claim 2, wherein a reset mechanism (7) is installed on the inner side surface of the protective frame (11), the reset mechanism (7) comprises a connecting column (71), a sliding block (72), a sliding column (73), a limiting block (74) and a spring (75), the inner side surface of the protective frame (11) is in sliding connection with the two sliding blocks (72) which are in rotating connection with the connecting column (71), the other end of the connecting column (71) is in rotating connection with the screen frame (63), the sliding column (73) is welded on the side wall of the sliding block (72), the limiting block (74) is welded on one half of the sliding column (73), and the spring (75) is wound on the surface of the sliding column (73) located on one side of the limiting block (74).
5. The multistage vibrating and screening device for coal and gangue separation according to claim 4, wherein a pneumatic mechanism (8) is installed at the top of the conveying box (4), the pneumatic mechanism (8) comprises an air bag box (81), a push plate (82), an air inlet hole (83), an air outlet pipe (84), an air bag (85) and an air outlet nozzle (86), the air bag box (81) is welded at the top of the conveying box (4), the push plate (82) which is of an arc-shaped structure is welded at one end, sliding in the air bag box (81), of the sliding column (73), the air bag (85) of the air inlet hole (83) is arranged on the inner installation surface of the air bag box (81), the air outlet pipe (84) is communicated with the bottom of the air bag (85), and one end, penetrating through the coal powder box (32), of the air outlet pipe (84) is communicated with the air outlet nozzle (86), the coal powder box (32) is of an arc-shaped structure relative to the side wall of the air outlet nozzle (86).
6. The multistage vibratory screening apparatus for gangue sorting according to claim 1, wherein the supporting mechanism (5) comprises supports (51), supporting plates (52), electromagnetic vibrators (53) and compression springs (54), four compression springs (54) fixedly connected with the supports (51) are installed at the bottom of the conveying box (4), the supporting plates (52) are installed among the four supports (51), and the electromagnetic vibrators (53) with the tops rotatably connected with the bottom of the conveying box (4) are installed on the surfaces of the supporting plates (52).
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| CN111781106B (en) * | 2020-07-11 | 2023-09-29 | 安徽省建筑科学研究设计院 | Machine-made sand vibration measurement system |
| CN111957386B (en) * | 2020-08-14 | 2021-11-16 | 唐山圣龙水泥有限公司 | Grind thorough cement milling equipment |
| CN112916421B (en) * | 2021-01-23 | 2021-09-28 | 安徽理工大学 | Photoelectric coal gangue sorting device and sorting method thereof |
| CN114130688B (en) * | 2021-11-09 | 2023-06-16 | 安徽理工大学 | Movable vibration feeding queuing device of gangue sorting machine |
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