Vibrating screening coal separator

Abstract

The invention discloses a vibrating screen separation coal separator, which relates to the technical field of coal separation, and comprises a support seat and a turning mechanism, the support seat is provided with an anti-accumulation mechanism, a coal separation mechanism and a blanking buffer mechanism from left to right in sequence, and the coal separation mechanism is provided with an airflow dispersion mechanism and a turning mechanism. Through cooperation of the coal dressing mechanism and the anti-accumulation mechanism, the situation of coal accumulation during discharging is prevented, impact generated when coal directly enters the coal dressing mechanism is reduced, and the situation that the economic value is affected due to coal breaking is avoided; through cooperation of the coal dressing mechanism and the airflow dispersion mechanism, light coal materials are separated in advance, part of time needed for the light coal materials to reach the lowermost layer through layer-by-layer screening is saved, meanwhile, the dust suppression effect is achieved, and pollution caused by vertical vibration of the light coal materials in the long-time screening process is prevented; and through cooperation of the coal dressing mechanism, the airflow dispersion mechanism and the stirring mechanism, accumulation is avoided, meanwhile, the screening time is prolonged, and screening thoroughness is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of coal preparation, and in particular to a vibrating screening coal preparation machine. Background Art

[0002] Coal preparation is an important part of coal processing. It aims to remove impurities in raw coal by physical or chemical methods and classify the raw coal to improve the quality and calorific value of coal. Vibration screening coal preparation is mainly used for preliminary classification and pretreatment of coal. Vibration screening can effectively separate raw coal according to particle size, providing conditions for subsequent coal preparation processes.

[0003] In the current vibration screening coal selection process, the raw coal is usually poured onto the screen surface. After the material enters the screen box, it is thrown and moved along an approximately straight line trajectory under the action of the exciting force. The larger particles of coal remain in the upper layer due to inertia and gravity, while the smaller particles of coal move through the screen holes to the next layer, so that the coal after preliminary classification and screening is guided to the conveyor belt according to the particle size for discharge; however, when the raw coal is poured onto the screen surface for unloading and unloading, the coal is prone to accumulation. When unloading, the direct collision and impact between the coal causes the coal to break, affecting its economic value; secondly, dust pollution is easily generated during the vibration screening process. Light coal is prone to static electricity and adhesion to the screen during long-term vibration, affecting the screening effect. Finally, during the vibration screening process, the accumulation and aggregation of coal will prolong the screening time, and the coal adhered to or stuck in the screen will cause the screen to be blocked, affecting the screening effect.

[0004] Therefore, in order to improve the effect and efficiency of vibration screening coal preparation and reduce the impact on the economic value of coal, the present invention provides a vibration screening coal preparation machine. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and to propose a vibrating screening coal separator.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a vibrating screening coal preparation machine, including a support seat and a flipping mechanism, the support seat is provided with an anti-accumulation mechanism, a coal preparation mechanism and a material discharge buffer mechanism from left to right, and the coal preparation mechanism is provided with an airflow dispersion mechanism and a flipping mechanism; the coal preparation mechanism includes a linear vibrating screen and a screen, and a linear vibrating screen is installed in the middle of the top wall of the support seat, two screens are installed inside the linear vibrating screen from top to bottom, the screen holes of the upper screen are larger than the screen holes of the lower screen, and the screen divides the interior of the linear vibrating screen into three screening bins: upper, middle and lower.

[0007] The airflow dispersion mechanism includes a double-headed air pump, and a double-headed air pump installed on the top wall of the support seat is arranged at the rear of the coal preparation mechanism, the two air outlets on the top wall of the double-headed air pump are connected to a retractable air duct, and the rear side wall of the linear vibrating screen is fixedly connected to a support frame for supporting the air duct; the flipping mechanism includes a flipping component for flipping the coal on the screen and preventing the screen from being blocked, and a driving component for driving the flipping component.

[0008] In the above-mentioned vibrating screening coal separator, the anti-accumulation mechanism includes a support column, and the left part of the top wall of the support seat is fixedly connected to the support column, the right side wall of the support column is fixedly connected to a stabilizing plate which is slidably connected to the top wall of the linear vibrating screen, and the right side wall of the stabilizing plate is fixedly connected to a semi-conical dispersion table, the bottom wall of the dispersion table is fixedly provided with a buffer folding plate connected to the left side wall of the stabilizing plate, and the right part of the top wall of the buffer folding plate is inclined toward the lower right.

[0009] In the above-mentioned vibrating screening coal separator, an anti-accumulation component is provided on the buffer folding plate, and the anti-accumulation component includes an adjusting member, and the buffer folding plate is symmetrically rotatably connected with the adjusting member, and the adjusting member is composed of a torsion spring rod connected to the buffer folding plate and a protrusion fixed to the outer wall of the torsion spring rod, the top walls of the torsion spring rods of the two adjusting members are fixed with a toggle member arranged above the buffer folding plate, and the top wall of the buffer folding plate is symmetrically provided with a slide rail, and the right part of the bottom wall of the toggle member is fixed with a sliding member adapted to the slide rail on the buffer folding plate.

[0010] In the above-mentioned vibrating screening coal separator, the bottom wall of the torsion spring rod of the adjusting part one is rotatably connected with an L-shaped plate fixed to the bottom wall of the buffer folding plate, and the bottom wall of the buffer folding plate is connected with the adjusting part two and the adjusting part three through a spring for relative sliding back and forth, and the right side walls of the adjusting part two and the adjusting part three are fixed with a protrusion two that matches the protrusion one of the adjusting part one.

[0011] In the above-mentioned vibrating screening coal separator, adjusting part 2 is composed of a rectangular block connected to the buffer folding plate and two wedge blocks fixed symmetrically on the left and right sides of the rear wall of the rectangular block, and adjusting part 3 is composed of a rectangular block connected to the buffer folding plate and a wedge block fixed in the middle of the front side wall of the rectangular block, the bottom wall of the wedge block of adjusting part 2 is inclined rearward and downward, the bottom wall of the wedge block of adjusting part 3 is inclined forward and downward, and the inclination angles of the wedge blocks of adjusting part 2 and adjusting part 3 are consistent.

[0012] In the above-mentioned vibrating screening coal separator, an L-shaped adjusting part is fixed to the upper part of the left inner wall of the linear vibrating screen, and the vertical section top wall of the L-shaped adjusting part is formed into an arrow shape by two front and rear inclined surfaces, and the top wall of the L-shaped adjusting part is adapted to the bottom wall of the wedge block of adjusting parts two and three.

[0013] In the above-mentioned vibrating screening coal preparation machine, the front and rear side walls of the upper screening bin and the middle screening bin of the linear vibrating screen are both provided with air outlet 1, and a blocking net is installed on the air outlet 1, the front side wall of the lower screening bin of the linear vibrating screen is provided with air outlet 2, and the front side wall of the linear vibrating screen is fixed with a guide bin covering the corresponding two air outlets 1 and one air outlet 2.

[0014] In the above-mentioned vibrating screening coal separator, the flipping assembly includes a vertical rod group, and the vertical rod group consists of two vertical rod members distributed on the left and right, the vertical rod group is fixedly connected to the air outlet one, and the two vertical rod groups corresponding to the front and rear are slidably connected to the flipping member front and back, and the flipping member consists of two rod members one distributed on the left and right and slidably connected to the vertical rod group and three rod members two distributed front and back fixed on the two rod members.

[0015] In the above-mentioned vibrating screening coal separator, the right ends of the two rods of the flipping member are connected to anti-clogging balls through flexible ropes, and the rear end of one rod of the flipping member is fixedly connected to an adjusting frame connected to the support frame through a spring, the driving assembly includes a cam, and the interior of the adjusting frame is rotatably connected to the cam, and a paddle member arranged in front of the air outlet of the air guide duct is coaxially fixed above the cam, and the top wall of the paddle member is rotatably connected to a support block fixed to the rear side wall of the linear vibrating screen.

[0016] In the above-mentioned vibrating screening coal separator, the feeding buffer mechanism includes a slide plate, and the right part of the bottom wall of the two screens and the right part of the bottom wall of the linear vibrating screen are hinged with a slide plate, the outer wall of the slide plate is sleeved with a feeding plate, the right part of the top wall of the support seat is symmetrically fixed with a support plate front and back, and the front and rear side walls of the feeding plate are rotatably connected to the support plate, the bottom wall of the feeding plate is connected to a horizontal plate fixed between the two support plates through a spring, and a plurality of rubber pads are evenly fixed to the top wall of the feeding plate.

[0017] Compared with the existing technology, the advantages of the present invention are: 1. By cooperating with the coal selection mechanism and the anti-accumulation mechanism, coal accumulation is prevented during feeding, the impact caused by the coal directly entering the coal selection mechanism is reduced, and the coal is avoided from being broken and affecting its economic value; the coal falls to the dispersion table and is dispersed circumferentially along the inclined side wall of the dispersion table, and the up and down vibration of the linear vibrating screen drives the L-shaped adjusting part to move up and down, driving the toggle part to swing back and forth on the buffer folding plate, and the toggle part further disperses the coal.

[0018] 2. Through the coordination of the coal preparation mechanism and the air flow dispersion mechanism, the air blown out by the double-head air pump is blown to the top of the corresponding screen through the air guide pipe and the air outlet, so as to separate the light coal in advance, saving some of the time required for the light coal to reach the bottom layer after being screened layer by layer. At the same time, it plays a role in dust suppression and prevents pollution caused by the up and down vibration of light coal during the long screening process.

[0019] 3. Through the coordination of the coal selection mechanism, the air flow dispersion mechanism and the flipping mechanism, the wind blown out of the air guide duct drives the paddle parts to rotate, driving the flipping parts to flip and disrupt the coal on the top wall of the screen to avoid accumulation, while extending the screening time to ensure the thoroughness of the screening, driving the anti-blocking ball to vibrate with the vibration of the screen, and the anti-blocking ball moves left and right with the flipping part to increase the moving range of the anti-blocking ball, constantly jumping and rolling to frequently contact the surface of the screen, exerting impact force on the coal adhered or stuck in the screen to make it fall off, thereby avoiding the screen from being blocked and preventing its accumulation from affecting the screening effect, and at the same time, it can also reduce the additional impact load caused by material accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein: Figure 1 A schematic diagram of the overall structure.

[0021] Figure 2 This is a schematic diagram of the overall structure from another perspective.

[0022] Figure 3 It is a partial structural schematic diagram of the air flow dispersion mechanism.

[0023] Figure 4 A partial structural diagram of the anti-accumulation mechanism.

[0024] Figure 5 A partial structural diagram of the anti-accumulation component.

[0025] Figure 6 This is a schematic diagram of the change in the deflection angle of the toggle member caused by the upward movement of the L-shaped adjustment member.

[0026] Figure 7 This is a schematic diagram of the change in which the L-shaped adjusting member moves upward and drives the adjusting member two and the adjusting member three to move closer.

[0027] Figure 8 for Figure 6 Schematic diagram of the enlarged structure at point A in the middle.

[0028] Fig. 9 It is a partial structural diagram of the driving component and the flipping component.

[0029] Fig.10 It is a schematic diagram of another part of the structure of the driving component and the flipping component.

[0030] Fig.11 It is a schematic diagram of the change of the blanking plate from an inclined state to a horizontal state.

[0031] Fig.12 This is a schematic diagram of the structure of the guide warehouse.

[0032] In the figure: 1. support seat; 2. coal preparation mechanism; 21. linear vibrating screen; 22. screen; 3. anti-accumulation mechanism; 31. support column; 32. stabilizing plate; 33. dispersion table; 34. buffer folding plate; 35. anti-accumulation assembly; 351. toggle member; 352. sliding member; 353. L-shaped plate; 354. adjusting member 1; 355. adjusting member 2; 356. adjusting member 3; 357. L-shaped adjusting member; 4. air flow dispersion mechanism; 41. double-head air pump; 42 , air guide duct; 43, air outlet one; 44, baffle; 45, air outlet two; 46, support frame; 47, guide bin; 5, flip mechanism; 51, drive assembly; 511, support block; 512, paddle member; 513, cam; 52, flip assembly; 521, adjustment frame; 522, flip member; 523, anti-clogging ball; 524, vertical rod group; 6, discharge buffer mechanism; 61, support plate; 62, discharge plate; 63, rubber pad; 64, skateboard. DETAILED DESCRIPTION

[0033] 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.

[0034] Reference Figure 1 to Figure 2 A vibrating screening coal preparation machine comprises a support seat 1 and a turning mechanism 5. An anti-accumulation mechanism 3, a coal preparation mechanism 2 and a material discharge buffer mechanism 6 are arranged on the support seat 1 from left to right, and an airflow dispersion mechanism 4 and a turning mechanism 5 are arranged on the coal preparation mechanism 2.

[0035] The coal preparation mechanism 2 is used for vibrating screening operations. The anti-accumulation mechanism 3 is used to prevent coal accumulation during material discharge, and at the same time, the impact caused by the coal directly entering the coal preparation mechanism 2 is reduced to reduce the coal breakage. The light coal on the upper layer is discharged in advance at the front stage of screening through the airflow dispersion mechanism 4, and collected in the corresponding light coal screening bin on the lower layer; the turning mechanism 5 is driven by the airflow dispersion mechanism 4 to turn the coal in the coal preparation mechanism 2 to prevent coal accumulation during the screening process and prevent coal blockage; finally, the screened coal is buffered by the material discharge buffer mechanism 6 and falls onto the conveying equipment.

[0036] Reference Figure 1 The coal preparation mechanism 2 includes a linear vibrating screen 21 and a screen 22. The linear vibrating screen 21 is installed in the middle of the top wall of the support seat 1. Two screens 22 are installed inside the linear vibrating screen 21 from top to bottom. The screen holes of the upper screen 22 are larger than those of the lower screen 22. The screen 22 divides the interior of the linear vibrating screen 21 into three screening bins: upper, middle and lower.

[0037] Reference Figure 1 , Figure 2 and Figure 4 The anti-accumulation mechanism 3 includes a support column 31, the left part of the top wall of the support seat 1 is fixedly connected with the support column 31, the right side wall of the support column 31 is fixedly connected with a stabilizing plate 32 which is slidably connected to the top wall of the linear vibrating screen 21, the right side wall of the stabilizing plate 32 is fixedly connected with a semi-conical dispersion table 33, the bottom wall of the dispersion table 33 is fixed with a buffer folding plate 34 connected to the left side wall of the stabilizing plate 32, the right part of the top wall of the buffer folding plate 34 is inclined toward the lower right, and an anti-accumulation component 35 is arranged on the buffer folding plate 34.

[0038] Reference Figures 4 to 8 The anti-accumulation assembly 35 includes an adjusting member 354, and the buffer folding plate 34 is symmetrically rotatably connected with the adjusting member 354. The adjusting member 354 is composed of a torsion spring rod connected to the buffer folding plate 34 and a protrusion 1 fixed to the outer wall of the torsion spring rod. The top walls of the torsion spring rods of the two adjusting members 354 are fixed with a toggle member 351 arranged above the buffer folding plate 34. The top wall of the buffer folding plate 34 is symmetrically provided with a slide rail, and the right part of the bottom wall of the toggle member 351 is fixed with a sliding member 352 adapted to the slide rail on the buffer folding plate 34; the bottom wall of the torsion spring rod of the adjusting member 354 is correspondingly rotatably connected with an L-shaped plate 353 fixed to the bottom wall of the buffer folding plate 34, and the bottom wall of the buffer folding plate 34 is elastically movable. The spring (not shown in the figure) is connected to the adjusting member 2 355 and the adjusting member 3 356 for relative sliding front and rear, and the right side walls of the adjusting member 2 355 and the adjusting member 3 356 are fixed with a protrusion 2 that matches the protrusion 1 of the adjusting member 1 354; the adjusting member 2 355 consists of a rectangular block connected to the buffer folding plate 34 and two wedge blocks fixed symmetrically on the rear side wall of the rectangular block, and the adjusting member 3 356 consists of a rectangular block connected to the buffer folding plate 34 and a wedge block fixed in the middle of the front side wall of the rectangular block, the bottom wall of the wedge block of the adjusting member 2 355 is inclined rearward and downward, and the bottom wall of the wedge block of the adjusting member 3 356 is inclined forward and downward, and the inclination angles of the wedge blocks of the adjusting member 2 355 and the adjusting member 3 356 are consistent.

[0039] Reference Figure 3 and Figure 6 An L-shaped adjusting member 357 is fixed to the upper left inner wall of the linear vibrating screen 21. The vertical section top wall of the L-shaped adjusting member 357 is formed into an arrow shape by two front and rear inclined surfaces. The top wall of the L-shaped adjusting member 357 is adapted to the bottom walls of the wedge blocks of the adjusting member 2 355 and the adjusting member 3 356.

[0040] The exciting force generated by the vibrator of the linear vibrating screen 21 causes the coal to be thrown in an approximately linear motion on the screen 22 after entering. Coal of different particle sizes is gradually separated according to its own gravity and inertia, with larger particles remaining in the upper layer and smaller particles passing through the screen 22 to move to the next layer. When the coal is discharged, it falls from above the dispersion table 33, and when it falls to the dispersion table 33, it is dispersed circumferentially along the inclined side walls of the dispersion table 33. Some of the undispersed coal is fully broken up when it passes through the anti-accumulation component 35 along the buffer folding plate 34.

[0041] The support column 31 and the stabilizing plate 32 support the buffer folding plate 34 and the dispersion table 33. When the linear vibrating screen 21 vibrates up and down and drives the L-shaped adjusting member 357 to move upward, the arrow-shaped top wall of the L-shaped adjusting member 357 pushes the wedge blocks of the adjusting member 2 355 and the adjusting member 3 356 from a state of small overlap to a state of large overlap. The adjusting member 2 355 and the adjusting member 3 356 slide close to each other on the bottom wall of the buffer folding plate 34. The springs connecting the adjusting member 2 355 and the adjusting member 3 356 to the buffer folding plate 34 are stretched. In the process of the adjusting member 2 355 and the adjusting member 3 356 approaching each other, the protrusion 2 of the adjusting member 2 355 and the adjusting member 3 356 pushes the protrusion 1 of the adjusting member 1 354, and the torsion spring rod of the adjusting member 1 354 drives the toggle member 351 to deflect slightly on the top wall of the buffer folding plate 34, and the sliding member 352 moves on the slide rail of the buffer folding plate 34.

[0042] When the L-shaped adjusting member 357 moves downward, there is no longer an external force between the adjusting member 356 and the adjusting member 2 355, and the springs connecting the adjusting member 2 355 and the adjusting member 3 356 with the buffer folding plate 34 rebound, and the adjusting member 2 355 and the adjusting member 3 356 slide away from each other on the bottom wall of the buffer folding plate 34, and the wedge blocks of the adjusting member 2 355 and the adjusting member 3 356 are reset from a state of mostly overlapping to a state of slightly overlapping, and the protrusion 2 of the adjusting member 2 355 and the adjusting member 3 356 are away from the protrusion 1 of the adjusting member 1 354, and the torsion spring rod of the adjusting member 1 354 drives the toggle member 351 to reset; the up and down movement of the L-shaped adjusting member 357 drives the toggle member 351 to swing back and forth on the buffer folding plate 34 to prevent coal accumulation during unloading, reduce the impact caused by the coal directly entering the coal preparation mechanism 2, and avoid the coal being broken and affecting its economic value.

[0043] Reference Figure 1 to Figure 2 The air flow dispersion mechanism 4 includes a double-headed air pump 41. A double-headed air pump 41 installed on the top wall of the support seat 1 is arranged at the rear of the coal preparation mechanism 2. The two air outlets on the top wall of the double-headed air pump 41 are connected to a retractable air guide duct 42. The rear side wall of the linear vibrating screen 21 is fixedly connected to a support frame 46 for supporting the air guide duct 42.

[0044] Reference Figure 1 , Figure 3 and Fig.12 The front and rear side walls of the upper screening bin and the middle screening bin of the linear vibrating screen 21 are both provided with an air outlet 1 43, and a blocking net 44 is installed on the air outlet 1 43. The front side wall of the lower screening bin of the linear vibrating screen 21 is provided with an air outlet 2 45, and the front side wall of the linear vibrating screen 21 is fixed with a guide bin 47 covering the corresponding two air outlets 1 43 and one air outlet 2 45.

[0045] Reference Figure 1 and Fig. 9 The turning mechanism 5 includes a turning assembly 52 for turning over the coal on the screen 22 and preventing the screen 22 from being blocked, and a driving assembly 51 for driving the turning assembly 52 .

[0046] Reference Figure 3 The flip assembly 52 includes a vertical rod group 524, which consists of two vertical rod members distributed on the left and right. The vertical rod group 524 is fixedly connected to the air outlet 43, and a flip member 522 is slidably connected to the two corresponding vertical rod groups 524 in the front and rear directions. The flip member 522 consists of two rod members 1 distributed on the left and right and slidably connected to the vertical rod group 524 and three rod members 2 distributed in the front and rear directions fixed on the two rod members.

[0047] Reference Figure 2 , Fig. 9 and Fig.10 The two right ends of the rod of the flip member 522 are connected to the anti-blocking ball 523 through a flexible rope, and the rear end of the rod of the flip member 522 is fixedly connected to the adjustment frame 521 connected to the support frame 46 through a spring. The driving assembly 51 includes a cam 513, and the internal rotation of the adjustment frame 521 is connected to the cam 513. The upper part of the cam 513 is coaxially fixed with a paddle member 512 arranged in front of the air outlet of the air guide duct 42, and the top wall of the paddle member 512 is rotatably connected to the support block 511 fixed to the rear side wall of the linear vibrating screen 21.

[0048] During the screening of the coal on the top wall of the screen 22, the wind blown out by the double-head air pump 41 is blown to the top of the corresponding screen 22 through the air guide duct 42 and the air outlet 43. The light materials in the coal during the feeding process and the initial screening stage are blown forward and blown to the inside of the guide bin 47 through the baffle 44. The wind is guided downward inside the guide bin 47 and enters the lowest screening layer through the air outlet 45. The light coal can be separated in advance, saving some time for the light coal to reach the lowest layer after being screened layer by layer. At the same time, it plays a role in dust suppression, preventing pollution caused by the up and down vibration of the light coal during a long screening process.

[0049] When the wind blown out by the double-head air pump 41 passes through the air guide pipe 42 and blows toward the air outlet 43, it will blow the paddle piece 512, and the paddle piece 512 drives the cam 513 to rotate, and the rotation of the cam 513 drives the adjustment frame 521 to move back and forth, and the adjustment frame 521 drives the flipping piece 522 and the anti-clogging ball 523 to move back and forth on the top wall of the screen 22 and the corresponding vertical rod group 524, and the flipping piece 522 flips and disrupts the coal material on the top wall of the screen 22 to avoid accumulation, and at the same time prolongs the screening time to ensure To ensure the thoroughness of screening, the anti-clogging ball 523 vibrates with the vibration of the screen 22, and the anti-clogging ball 523 moves left and right with the flip part 522, which increases the moving range of the anti-clogging ball 523. The anti-clogging ball 523 constantly jumps and rolls and frequently contacts the surface of the screen 22, exerting impact force on the coal material adhered or stuck in the screen 22 to make it fall off, thereby avoiding the screen 22 from being blocked and affecting the screening effect. At the same time, it can also reduce the additional impact load caused by material accumulation.

[0050] Reference Figure 1 and Fig.11 The unloading buffer mechanism 6 includes a slide plate 64, the right part of the bottom wall of the two screens 22 and the right part of the bottom wall of the linear vibrating screen 21 are hinged with the slide plate 64, the outer wall of the slide plate 64 is sleeved with the unloading plate 62, and the right part of the top wall of the support seat 1 is symmetrically fixed with a support plate 61, the front and rear side walls of the unloading plate 62 are rotatably connected to the support plate 61, the bottom wall of the unloading plate 62 is connected to a horizontal plate fixed between the two support plates 61 through a spring, and a plurality of rubber pads 63 are evenly fixed on the top wall of the unloading plate 62.

[0051] The screened coal moves to the right to the discharge plate 62, and the rubber pad 63 acts as a buffer for the coal. The discharge plate 62 rotates rapidly between the support plates 61 as the coal preparation mechanism 2 vibrates up and down, changing from an inclined state to a horizontal state and then to an inclined state. The side of the discharge plate 62 close to the coal preparation mechanism 2 slides on the slide plate 64, and the slide plate 64 rotates around the screen 22 and the bottom wall of the linear vibrating screen 21 to adapt to the change in the inclination angle of the rubber pad 63, so as to buffer the discharged coal.

[0052] Reference Figure 1-Figure 12 The specific operation steps of the vibration screening coal separator are as follows: the linear vibration screen 21 is used for vibration screening operations. When the coal is discharged, it falls from the top of the dispersion table 33. Some undispersed coal is discharged along with the buffer folding plate 34. The toggle member 351 swings back and forth on the buffer folding plate 34 to break it up and prevent accumulation.

[0053] During the screening of the coal on the top wall of the screen 22, the air blown out of the air duct 42 separates the light coal in advance, saving the time required for a portion of the light coal to reach the bottom layer after being screened layer by layer, and at the same time plays a role in dust suppression; at the same time, the paddle member 512 is blown to drive the flipping member 522 and the anti-clogging ball 523 to flip and disrupt the coal on the top wall of the screen 22, thereby avoiding the screen 22 from being blocked and preventing its accumulation from affecting the screening effect.

[0054] The screened coal moves to the right to the unloading plate 62, and the slide plate 64 and the rubber pad 63 play a buffering role for the coal.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vibrating screening coal separator, comprising a support base (1) and a turning mechanism (5), characterized in that: The support seat (1) is provided with an anti-accumulation mechanism (3), a coal selection mechanism (2) and a material discharge buffer mechanism (6) in sequence from left to right, and the coal selection mechanism (2) is provided with an airflow dispersion mechanism (4) and a turning mechanism (5); The coal preparation mechanism (2) comprises a linear vibrating screen (21) and a screen (22), and the linear vibrating screen (21) is installed in the middle of the top wall of the support seat (1), and two screens (22) are installed inside the linear vibrating screen (21) from top to bottom, the screen holes of the upper screen (22) are larger than the screen holes of the lower screen (22), and the screens (22) divide the interior of the linear vibrating screen (21) into three screening bins: upper, middle and lower; The air flow dispersion mechanism (4) comprises a double-headed air pump (41), and a double-headed air pump (41) mounted on the top wall of the support seat (1) is arranged at the rear of the coal separation mechanism (2), two air outlets on the top wall of the double-headed air pump (41) are connected to a retractable air guide pipe (42), and a support frame (46) supporting the air guide pipe (42) is fixedly connected to the rear side wall of the linear vibrating screen (21); The turning mechanism (5) comprises a turning component (52) for turning over the coal on the screen (22) and preventing the screen (22) from being blocked, and a driving component (51) for driving the turning component (52).

2. A vibrating screening coal separator according to claim 1, characterized in that: The anti-accumulation mechanism (3) comprises a support column (31), and the left portion of the top wall of the support seat (1) is fixedly connected to the support column (31), the right side wall of the support column (31) is fixedly connected to a stabilizing plate (32) connected to the top wall of the linear vibrating screen (21) in an up-and-down sliding manner, and the right side wall of the stabilizing plate (32) is fixedly connected to a semi-conical dispersion table (33), and the bottom wall of the dispersion table (33) is fixedly connected to a buffer folding plate (34) connected to the left side wall of the stabilizing plate (32), and the right portion of the top wall of the buffer folding plate (34) is inclined toward the lower right.

3. A vibrating screening coal separator according to claim 2, characterized in that: The buffer folding plate (34) is provided with an anti-accumulation component (35), and the anti-accumulation component (35) includes an adjusting member (354). The buffer folding plate (34) is rotatably connected to the adjusting member (354) in a front-to-back manner, and the adjusting member (354) is composed of a torsion spring rod connected to the buffer folding plate (34) and a protrusion (354) fixed to the outer wall of the torsion spring rod. The top walls of the torsion spring rods of the two adjusting members (354) are both fixed with a toggle member (351) arranged above the buffer folding plate (34), and the top wall of the buffer folding plate (34) is symmetrically provided with a slide rail, and the right part of the bottom wall of the toggle member (351) is fixed with a slide member (352) adapted to the slide rail on the buffer folding plate (34).

4. A vibrating screening coal separator according to claim 3, characterized in that: The bottom wall of the torsion spring rod of the adjusting member 1 (354) is rotatably connected to an L-shaped plate (353) fixed to the bottom wall of the buffer folding plate (34); the bottom wall of the buffer folding plate (34) is connected to the adjusting member 2 (355) and the adjusting member 3 (356) by means of a spring so as to slide relative to each other forward and backward; and the right side walls of the adjusting member 2 (355) and the adjusting member 3 (356) are both fixed with a protrusion 2 that matches the protrusion 1 of the adjusting member 1 (354).

5. A vibrating screening coal separator according to claim 4, characterized in that: The second adjusting member (355) is composed of a rectangular block connected to the buffer folding plate (34) and two wedge blocks fixed symmetrically to the rear side wall of the rectangular block, and the third adjusting member (356) is composed of a rectangular block connected to the buffer folding plate (34) and a wedge block fixed in the middle of the front side wall of the rectangular block. The bottom wall of the wedge block of the second adjusting member (355) is inclined rearward and downward, and the bottom wall of the wedge block of the third adjusting member (356) is inclined forward and downward, and the inclination angles of the wedge blocks of the second adjusting member (355) and the third adjusting member (356) are consistent.

6. A vibrating screening coal separator according to claim 5, characterized in that: An L-shaped adjusting member (357) is fixed to the upper portion of the left inner wall of the linear vibrating screen (21), and the vertical section top wall of the L-shaped adjusting member (357) is formed into an arrow shape by two front and rear inclined surfaces, and the top wall of the L-shaped adjusting member (357) is adapted to the bottom walls of the wedge blocks of the second adjusting member (355) and the third adjusting member (356).

7. A vibrating screening coal separator according to claim 1, characterized in that: The front and rear side walls of the upper screening bin and the middle screening bin of the linear vibrating screen (21) are both provided with air outlet one (43), and a blocking net (44) is installed on the air outlet one (43); the front side wall of the lower screening bin of the linear vibrating screen (21) is provided with air outlet two (45), and a guide bin (47) covering the corresponding two air outlets one (43) and one air outlet two (45) is fixed to the front side wall of the linear vibrating screen (21).

8. A vibrating screening coal separator according to claim 7, characterized in that: The flap assembly (52) comprises a vertical rod group (524), and the vertical rod group (524) is composed of two vertical rod members distributed on the left and right. The vertical rod group (524) is fixedly connected to the air outlet one (43), and the two vertical rod groups (524) corresponding to the front and rear are slidably connected to the flap member (522) in the front and rear direction. The flap member (522) is composed of two rod members one distributed on the left and right and slidably connected to the vertical rod group (524) and three rod members two distributed on the front and rear direction and fixed to the two rod members.

9. A vibrating screening coal separator according to claim 8, characterized in that: The two right ends of the rod of the flipping member (522) are connected to an anti-blocking ball (523) via a flexible rope, and the rear end of the rod of the flipping member (522) is fixedly connected to an adjustment frame (521) connected to the support frame (46) via a spring, the driving assembly (51) comprises a cam (513), and the inside of the adjustment frame (521) is rotatably connected to the cam (513), a paddle member (512) arranged in front of an air outlet of the air guide duct (42) is coaxially fixed above the cam (513), and the top wall of the paddle member (512) is rotatably connected to a support block (511) fixed to a rear side wall of the linear vibration screen (21).

10. A vibrating screening coal separator according to claim 1, characterized in that: The material discharge buffer mechanism (6) comprises a slide plate (64), and the right part of the bottom wall of the two screens (22) and the right part of the bottom wall of the linear vibrating screen (21) are hinged with the slide plate (64), the outer wall of the slide plate (64) is sleeved with a material discharge plate (62), the right part of the top wall of the support seat (1) is symmetrically fixed with a support plate (61) in the front and rear directions, and the front and rear side walls of the material discharge plate (62) are rotatably connected to the support plate (61), the bottom wall of the material discharge plate (62) is connected to a horizontal plate fixed between the two support plates (61) through a spring, and a plurality of rubber pads (63) are evenly fixed to the top wall of the material discharge plate (62).

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