Movable screening station

Abstract

The invention discloses a movable screening station, and belongs to the technical field of green coal dressing, the movable screening station comprises an auxiliary discharging assembly, a screening bin body is arranged on the outer side of the auxiliary discharging assembly, external raw coal falls into the screening bin body through the auxiliary discharging assembly to be screened, and a crushing dust removal assembly, a conveying assembly and a screening assembly are arranged in the screening bin body; the crushing and dust removing assembly is arranged at the top end of the screening bin body, a conveying assembly is arranged below the crushing and dust removing assembly, and a screening assembly is arranged below the conveying assembly. The screening station has the beneficial effects that the crushing and dust removing assembly is arranged, dust particles with tiny particle sizes can be effectively captured through filtering of dust removing cloth, the filtering efficiency of a high-quality cloth bag can reach 99% or above, and even particles with the particle size being 0.1 micrometer or above can be removed, so that dust emission of the screening station can be remarkably reduced, and the screening efficiency is improved. And the air quality of the production environment is improved, so that the purpose of green coal dressing is achieved.

Description

Technical Field

[0001] This application relates to the technical field of green coal preparation, and particularly to a mobile screening station. Background Art

[0002] When processing coal, an important step is coal preparation. By using physical, chemical and other methods to process raw coal, removing useless components such as impurities and gangue can improve the quality and utilization efficiency of coal. In the existing market, the coal preparation process generally first uses a crusher to crush the coal, and then the crushed coal is classified by a screening station. After that, jigging is used for gravity coal preparation, and then a flotation machine is used to separate the coal from the gangue to complete the coal preparation work. Therefore, it can be seen that the screening of coal by a screening station is one of the essential steps in the process of green coal preparation;

[0003] Since the coal mining and processing sites may often change during coal preparation, mobile screening stations have been designed in the existing market to complete the screening of coal. The screening station can be moved to a new working location at any time without complex disassembly, assembly and infrastructure construction. Its principle is that an external traction device or its own crawler drives the entire screening station to move. After reaching the appropriate position, the coal to be screened reaches above the feeding conveyor through the feeding hopper or buffer bin, and then the coal is conveyed above the vibrating screen. High-speed vibration is generated by a vibrating motor or an eccentric vibration mechanism, causing relative movement between the coal and the screen surface. The coal smaller than the screen holes falls, and the coal material larger than the screen holes remains on the screen surface and is then conveyed out, such as the screening principle disclosed in a mobile screening station with a light material separation system with application number 202311641930.0;

[0004] However, when the above screening station is in use, it cannot perform secondary crushing on the coal that enters the screening station again. Moreover, when the coal is screened, a large amount of coal dust is generated during the vibration of the screen surface, and no corresponding dust removal mechanism is provided at the top of the screening station, which leads to a very poor screening environment. Or the method of water mist dust removal is used for dust removal work. However, since the screening time of the entire screening station is very long, a large amount of water resources will be consumed during the dust removal process, which does not meet the standards of green coal preparation. Summary of the Invention

[0005] One of the purposes of this application is to provide a mobile screening station to solve the problem that the existing mobile screening stations in the market cannot effectively remove a large amount of dust generated during the screening process of the vibrating screen when performing coal preparation.

[0006] To achieve the above object, the technical solution adopted in this application is as follows: A mobile screening station includes an auxiliary feeding component, on the outside of which there is a screening bin. Raw coal from the outside falls into the screening bin through the auxiliary feeding component for screening work. Inside the screening bin, there are a crushing and dust removal component, a transportation component, and a screening component. The crushing and dust removal component is arranged at the top position of the screening bin, and below it is the transportation component. Below the transportation component is the screening component. At the top of the screening component, there is a conveying component for transporting the screened coal outwards. The crushing and dust removal component includes a crushing mechanism and a dust removal mechanism. The crushing mechanism is used to crush the raw coal transported by the transportation component. In the middle of the crushing mechanism, there is a dust removal mechanism, which is used to filter and remove the dust generated during the crushing of the raw coal, so as to achieve the purpose of improving the working environment of the screening station. At the bottom of the auxiliary feeding component and the screening bin, there is a moving component for assisting the whole screening station to move;

[0007] The auxiliary feeding component includes a support frame body, a feeding bin, and a feeding hole. On both sides of the feeding bin, there are support frame bodies for support work. On one side of the bottom of the feeding bin, there is a feeding hole. The feeding hole is arranged on the side closer to the screening bin and corresponds to the material receiving port on the screening bin. The raw coal falling through the feeding hole enters the inside of the screening bin through the material receiving port on the screening bin.

[0008] Preferably, the screening bin includes a fixed frame body, an installation top plate, and a screening outer shell. On the outer sides of the screening outer shell, there are fixed frame bodies for support. At the top of the screening outer shell, there is a detachable installation top plate. On one side of the installation top plate, there is a material receiving port for receiving materials. In the middle of the installation top plate, it is set as a convex arc structure for the installation of the crushing and dust removal component.

[0009] Preferably, the crushing mechanism includes a crushing roller body, a limiting roller body, a through cylinder, and a disassembly and assembly mechanism. The crushing roller body and the limiting roller body are connected through the disassembly and assembly mechanism. The outer sides of both the crushing roller body and the limiting roller body are set as mesh hole structures. In the middle of the mesh hole structure penetrated by the crushing roller body, there are protruding blocks. On both sides of the middle of the limiting roller body, there are coaxially connected through cylinders, and the through cylinders penetrate the outer wall of the installation top plate and are connected to it through bearings. The through cylinders penetrate the inside of the limiting roller body;

[0010] The dust removal mechanism includes a dust removal cloth, which is wound around the outside of the limiting roller body for dust removal work.

[0011] Preferably, the disassembly and assembly mechanism is symmetrically arranged at the top ends on both sides of the crushing roll body and the limiting roll body. The disassembly and assembly mechanism includes a mounting block and a mounting seat. Four groups of mounting blocks are equidistantly arranged on the inner wall of the crushing roll body, and four groups of mounting seats are equidistantly arranged on the outer wall of the limiting roll body. A clamping groove is arranged inside the mounting seat for clamping with the mounting block.

[0012] Preferably, the moving assembly includes tires arranged at equal intervals. An external traction device is connected to the traction assembly at the top end of the auxiliary feeding assembly to complete the traction and moving work.

[0013] Preferably, the transportation assembly includes two rotating rollers, a transportation belt and a fixing plate. The two rotating rollers are limited by the fixing plate on both sides, and the rotating rollers are connected to the fixing plate by bearings. A transportation belt is arranged outside the two rotating rollers. A driving motor is arranged outside one of the rotating rollers. A linkage assembly is also arranged outside the rotating roller and is connected to the crushing and dust removal assembly;

[0014] The linkage assembly includes a driving pulley, a transmission belt and a driven pulley. The driving pulley is coaxially connected to the outside of the rotating roller, and a transmission belt and a driven pulley are connected to the outside of the driving pulley. The driven pulley is coaxially connected to the outside of the through barrel.

[0015] Preferably, two groups of screening assemblies are symmetrically arranged inside the screening bin body. The screening assembly includes a screening plate body, a rotating shaft, a fixing assembly, an adjusting assembly and a pushing assembly. The surface of the screening plate body is set as a mesh structure. The mesh sizes of the screening plate bodies on the two screening assemblies are different, and the mesh sizes decrease sequentially from top to bottom. A rotating shaft is arranged in the middle of the screening plate body and is connected to the inner wall of the screening bin body. The top end of one side of the screening plate body is connected to the fixing assembly. An adjusting assembly is arranged inside the fixing assembly, and the bottom of the adjusting assembly is pushed by the pushing assembly. The pushing assembly pushes the adjusting assembly to drive one side of the screening plate body to move upward to control the inclination angle of the screening plate body.

[0016] Preferably, the fixing assembly includes a connecting frame and a vibration motor. The cross section of the connecting frame is arranged in a "U" shape, and a vibration motor is arranged at the top end of the outside thereof to control the vibration screening work of the screening plate body.

[0017] Preferably, the adjusting assembly includes an intermediate cross plate, an extension rod, a moving block, a compression spring, a limit rod and a vibration spring, the intermediate cross plate is arranged in the middle of the connecting frame, and the upper and lower top ends thereof are provided with limit rods penetrating the connecting frame, and the outer side of the limit rod is provided with a vibration spring connected to the intermediate cross plate, extension rods are installed at equal intervals on the outer side of the intermediate cross plate, and a moving block is integrally installed in the middle of the extension rod, the moving block slides in a slide groove on the surface of the screening bin body, and compression springs are provided on the upper and lower parts of the moving block and connected to the inner wall of the slide groove, a pushing assembly is provided at the bottom of the extension rod, the pushing assembly includes a rotating motor and a rotating cam, and the top end of the rotating motor is coaxially connected to the rotating cam.

[0018] Preferably, the conveying assembly includes a first conveying body, a second conveying body and a third conveying body. The first conveying body and the second conveying body are respectively arranged at the top positions of two screening assemblies, and are used to convey the coal falling from the screening assemblies. The third conveying body is arranged at the bottom of the screening bin body, and is used to convey the coal that falls from the screen. The first conveying body, the second conveying body and the third conveying body have the same structure, specifically including a driving device, a conveyor belt and a driving roller. The driving device is an electric motor, and the electric motor transmits power to the driving roller through a reducer and a coupling. The driving roller rotates and drives the conveyor belt to move through the friction between the driving roller and the conveyor belt to complete the coal transportation.

[0019] Compared with the prior art, the beneficial effects of this application are:

[0020] (1) A crushing and dust removal component is provided. When the external coal reaches the top of the transport component, it will move with the transport component and then reach the bottom of the crushing and dust removal component, and be crushed by the crushing roller body outside it. During the crushing process, since the surfaces of the crushing roller body and the limiting roller body are both provided with a mesh structure, and the outside of the limiting roller body is also provided with a dust removal cloth, it will filter the dust generated during the crushing process and the subsequent vibration process. Finally, the filtered flue gas is discharged through the cylinder body, thereby achieving the effect of dust removal. Filtering through the dust removal cloth can effectively capture dust particles with tiny particle sizes. High-quality bags can achieve a filtration efficiency of more than 99%, and can even remove particles with a particle size of more than 0.1 microns. This enables the screening station to significantly reduce dust emissions and improve the air quality of the production environment, thereby achieving the purpose of green coal selection.

[0021] (2) A disassembly and assembly mechanism is provided between the crushing roller body and the limiting roller body, which can separate the crushing roller body from the limiting roller body, thereby making it easy to disassemble the dust removal cloth from the outside of the limiting roller body, thereby achieving the effect of convenient replacement and maintenance;

[0022] (3) An adjustment component is provided on one side of the screening plate body. It can control the up-and-down movement of one side of the screening plate body through the pushing component at the bottom. When it moves up and down, combined with the setting of the rotating shaft, the inclination angle of the entire screening plate body will change. Thus, according to raw coal of different weights and particle sizes, the time of coal on the screening plate body can be controlled, optimizing the entire screening process, achieving the purpose of improving screening efficiency, enhancing the versatility and flexibility of the equipment. In addition, by optimizing the inclination angle of the screening plate, the material can move more smoothly on the screen surface, reducing the accumulation and blockage of materials on the screen surface, thereby reducing the power demand of the screening equipment. A reasonable inclination angle can improve screening efficiency and also reduce the energy consumption required during the screening process, thus achieving energy conservation and consumption reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view structural schematic diagram of the present invention.

[0024] Figure 2 It is a half-sectional structural schematic diagram of the present invention.

[0025] Figure 3 It is a front view structural schematic diagram of the conveying component and the screening component inside the screening bin body of the present invention.

[0026] Figure 4 It is a side view structural schematic diagram of the conveying component and the screening component inside the screening bin body of the present invention.

[0027] Figure 5 It is a partially enlarged structural schematic diagram of the connection between the conveying component and the screening component of the present invention.

[0028] Figure 6 It is a structural schematic diagram of the screening component of the present invention.

[0029] Figure 7 It is a partially enlarged front view structural schematic diagram of the connection between the adjustment component and the pushing component of the present invention.

[0030] Figure 8 It is a partially enlarged bottom view structural schematic diagram of the connection between the adjustment component and the pushing component of the present invention.

[0031] Figure 9 It is an enlarged structural schematic diagram of the crushing and dust removal component of the present invention.

[0032] Figure 10 It is a half-sectional structural schematic diagram of the crushing and dust removal component of the present invention.

[0033] Figure 11 It is a partially enlarged half-sectional structural schematic diagram of the crushing and dust removal component of the present invention.

[0034] Figure 12 It is a top view structural schematic diagram of the blanking bin of the present invention.

[0035] In the figure: 1. Auxiliary blanking component; 11. Support frame body; 12. Blanking bin; 13. Blanking hole; 2. Screening bin body; 21. Fixed frame body; 22. Installation top plate; 23. Screening outer shell; 3. Crushing and dust removal component; 31. Crushing roller body; 32. Limiting roller body; 33. Penetrating cylinder; 34. Dust removal cloth; 35. Protruding block; 36. Disassembly and assembly mechanism; 361. Installation block; 362. Installation seat; 4. First conveying main body; 5. Second conveying main body; 6. Third conveying main body; 7. Moving component; 8. Transportation component; 9. Screening component; 91. Screening plate body; 92. Rotating shaft; 93. Fixed component; 931. Connecting frame; 932. Vibration motor; 94. Adjusting component; 941. Intermediate cross plate; 942. Extension rod; 943. Moving block; 944. Compression spring; 945. Limiting rod; 946. Vibration spring; 95. Pushing component; 951. Rotating motor; 952. Rotating cam; 10. Linkage component; 101. Driving pulley; 102. Transmission belt; 103. Driven pulley. Specific embodiments

[0036] Next, in combination with specific embodiments, the present application will be further described. It should be noted that, on the premise of no conflict, the following described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0037] In the description of the present application, it should be noted that for orientation terms, if there are terms such as "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation and position relationship is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0038] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence.

[0039] One preferred embodiment of the present application is as Figures 1 to 12As shown in the figure, a mobile screening station includes an auxiliary feeding component 1, and a screening bin body 2 is arranged outside it. Raw coal from the outside falls into the screening bin body 2 through the auxiliary feeding component 1 for screening work. A crushing and dust removal component 3, a transportation component 8, and a screening component 9 are arranged inside the screening bin body 2. The crushing and dust removal component 3 is arranged at the top position of the screening bin body 2, and the transportation component 8 is arranged below it. The screening component 9 is arranged below the transportation component 8. A conveying component is arranged at the top of the screening component 9 for transporting the screened coal outwards. The crushing and dust removal component 3 includes a crushing mechanism and a dust removal mechanism. The crushing mechanism is used to crush the raw coal transported by the transportation component 8, and the dust removal mechanism is arranged in the middle of the crushing mechanism for filtering and dust removal of the dust generated during the crushing of the raw coal, so as to improve the working environment of the screening station. A moving component 7 is arranged at the bottom of the auxiliary feeding component 1 and the screening bin body 2 for assisting the entire screening station to move;

[0040] The auxiliary feeding component 1 includes a support frame body 11, a feeding bin 12, and a feeding hole 13. The two sides of the feeding bin 12 are supported by the support frame body 11, and a feeding hole 13 is arranged on one side of the bottom of the feeding bin 12. The feeding hole 13 is arranged on the side closer to the screening bin body 2 and corresponds to the material receiving port position on the screening bin body 2. The raw coal falling from the feeding hole 13 enters the inside of the screening bin body 2 through the material receiving port on the screening bin body 2;

[0041] This application provides a mobile screening station with a crushing and dust removal component 3. Specifically, when in use, first, the coal from the outside is transported into the inside of the feeding bin 12 through the external conveying mechanism. Then, it falls to the position of the material receiving port through the feeding hole 13 inside the feeding bin 12, so that the coal reaches above the transportation component 8 inside the screening bin body 2. Then, the coal moves to the bottom of the crushing and dust removal component 3 along with the transportation component 8 and is initially crushed by the crushing mechanism inside the crushing and dust removal component 3. After that, the crushed coal falls above the screening component 9 for screening work. Finally, the screened coal is output by the conveying component to complete the screening work;

[0042] Among them, when the coal is crushed and during vibration screening, a large amount of dust will be generated and fly upwards, and then reach the inside of the dust removal mechanism inside the crushing and dust removal component 3 for dust removal work, so that there will be no phenomenon of a large amount of dust flying outwards;

[0043] In this application, a feeding mechanism is also arranged inside the feeding bin 12. By controlling the servo motor on the feeding mechanism to drive the auger to rotate, the coal accumulated inside can be transported to the position of the feeding hole 13 to completely control the feeding of the coal inside the feeding bin 12.

[0044] Among them, according to Figure 2 As shown, the screening bin body 2 includes a fixed frame body 21, a mounting top plate 22 and a screening outer shell 23. The outer sides of the screening outer shell 23 are supported by the fixed frame body 21, and a detachable mounting top plate 22 is provided at the top of the screening outer shell 23. A material receiving port is provided on one side of the mounting top plate 22 for receiving materials, and the middle of the mounting top plate 22 is provided with a convex arc structure for the installation of the crushing and dust removal assembly 3;

[0045] Among them, when it is necessary to repair the crushing and dust removal assembly 3, the bolts between the mounting top plate 22 and the screening outer shell 23 can be disassembled, so that the top of the crushing and dust removal assembly 3 is exposed to the external environment, which is convenient for its repair and maintenance work.

[0046] Furthermore, according to Figure 9 , Figure 10 and Figure 11 As shown, the crushing mechanism includes a crushing roller body 31, a limiting roller body 32, a through cylinder 33 and a disassembly and assembly mechanism 36. The crushing roller body 31 and the limiting roller body 32 are connected by the disassembly and assembly mechanism 36, and the outer sides of both the crushing roller body 31 and the limiting roller body 32 are provided with a mesh structure. Among them, a convex block 35 is provided in the middle of the mesh structure penetrated by the crushing roller body 31. Through cylinders 33 are coaxially connected to the middle of both sides of the limiting roller body 32, and the through cylinders 33 penetrate the outer wall of the mounting top plate 22 and are connected to it by bearings. The through cylinders 33 and the inside of the limiting roller body 32 penetrate each other;

[0047] The dust removal mechanism includes a dust removal cloth 34, and the dust removal cloth 34 is wound around the outside of the limiting roller body 32 for dust removal work.

[0048] The disassembly and assembly mechanism 36 is symmetrically arranged at the top ends of both sides of the crushing roller body 31 and the limiting roller body 32, and the disassembly and assembly mechanism 36 includes a mounting block 361 and a mounting seat 362. Four groups of mounting blocks 361 are equidistantly arranged on the inner wall of the crushing roller body 31, and four groups of mounting seats 362 are equidistantly arranged on the outer wall of the limiting roller body 32, and a clamping groove is provided inside for clamping with the mounting block 361;

[0049] The transportation component 8 includes two rotating rollers, a transportation belt and a fixing plate. The two sides of the two rotating rollers are limited by the fixing plate, and the rotating rollers are connected to the fixing plate by bearings. A transportation belt is arranged outside the two rotating rollers. A driving motor is arranged outside one of the rotating rollers, and a linkage component 10 is also arranged outside the rotating roller and is connected to the crushing and dust removal component 3;

[0050] The linkage component 10 includes a driving pulley 101, a conveyor belt 102, and a driven pulley 103. The driving pulley 101 is coaxially connected to the outer side of the rotating roller, and the conveyor belt 102 and the driven pulley 103 are connected to the outer side of the driving pulley 101. The driven pulley 103 is coaxially connected to the outer side of the through cylinder 33.

[0051] Among them, the coal will fall above the conveyor belt. At this time, the driving motor needs to be started to drive the rotating roller to rotate. When the rotating roller rotates, it will cause the conveyor belt to move, achieving the effect of transporting the coal. When the rotating roller rotates, it will cause the driving pulley 101 to rotate. With the setting of the conveyor belt 102, it will cause the driven pulley 103 to rotate. When it rotates, it will drive the through cylinder 33 to rotate. When it rotates, it will drive the limiting roller body 32 to rotate. When the limiting roller body 32 rotates, under the action of the disassembly and assembly mechanism 36, it will cause the crushing roller body 31 to rotate. When the crushing roller body 31 rotates, it will drive the protruding blocks 35 on its surface to contact the coal, achieving the effect of crushing the coal. When the coal is completely crushed by the crushing mechanisms on the two crushing and dust removal components 3, it will continue to move down along the conveyor belt and fall above the screening component 9 for screening work.

[0052] Among them, when crushing, the generated dust moves upward, and it will reach the position of the dust removal cloth 34 through the mesh holes on the surface of the crushing roller body 31. After being dust-removed by the dust removal cloth 34, it reaches the middle of the limiting roller body 32, and finally, it is discharged through the through cylinder 33.

[0053] Furthermore, when it needs to be moved, according to Figure 1 As shown, the moving component 7 includes tires arranged at equal intervals. The external traction device is connected to the traction component at the top of the auxiliary feeding component 1 to complete the traction and moving work. When controlling the entire screening station to move, the external tractor needs to be connected to the traction component at the top of the auxiliary feeding component 1. Thus, the tractor will pull the screening station to move under the action of the moving component 7.

[0054] The screening assembly 9 is symmetrically arranged in two groups inside the screening bin body 2, and it includes a screening plate body 91, a rotating shaft 92, a fixing assembly 93, an adjusting assembly 94, and a pushing assembly 95. The surface of the screening plate body 91 is provided with a mesh structure. The mesh sizes of the screening plate bodies 91 on the two screening assemblies 9 are different, and the mesh sizes decrease sequentially from top to bottom. A rotating shaft 92 is arranged in the middle of the screening plate body 91 and connected to the inner wall of the screening bin body 2. The top end of one side of the screening plate body 91 is connected to the fixing assembly 93. An adjusting assembly 94 is arranged inside the fixing assembly 93, and the bottom of the adjusting assembly 94 is pushed by the pushing assembly 95. The pushing assembly 95 pushes the adjusting assembly 94 to drive one side of the screening plate body 91 to move upward, so as to control the inclination angle of the screening plate body 91.

[0055] The fixing assembly 93 includes a connecting frame 931 and a vibration motor 932. The cross-section of the connecting frame 931 is arranged in a "U" shape, and a vibration motor 932 is arranged at the top end of its outer side, which is used to control the vibration screening work of the screening plate body 91.

[0056] The adjusting assembly 94 includes an intermediate cross plate 941, an extension rod 942, a moving block 943, a compression spring 944, a limiting rod 945, and a vibration spring 946. The intermediate cross plate 941 is arranged in the middle of the connecting frame 931, and limiting rods 945 are arranged at its upper and lower ends and penetrate through the connecting frame 931. A vibration spring 946 is arranged on the outer side of the limiting rod 945 and connected to the intermediate cross plate 941. Extension rods 942 are equidistantly installed on the outer side of the intermediate cross plate 941, and a moving block 943 is integrally installed in the middle of the extension rod 942. The moving block 943 slides in the chute on the surface of the screening bin body 2, and compression springs 944 are arranged above and below the moving block 943 and connected to the inner wall of the chute. The bottom of the extension rod 942 is provided with a pushing assembly 95. The pushing assembly 95 includes a rotating motor 951 and a rotating cam 952. The top end of the rotating motor 951 is coaxially connected with the rotating cam 952;

[0057] Among them, when screening, according to Figure 6 、 Figure 7 and Figure 8As shown in the figure, first, it is necessary to control the inclination angle of the screening plate body 91. It is necessary to start the rotary motor 951 installed on the fixed frame body 21 through the mounting frame, so that it drives the rotary cam 952 to rotate. When it rotates, it will push the extension rod 942 upward, so that it drives the moving block 943 to move in the chute. Thus, the middle horizontal plate 941 drives the entire connecting frame 931 to move upward through the limiting rod 945. In this application, when the middle horizontal plate 941 moves upward, it squeezes the compression spring 944 at its top. Until the middle horizontal plate 941 contacts the bottom of the connecting frame 931, when the middle horizontal plate 941 continues to move upward, it will cause the screening plate body 91 to move upward. The upward movement of the connecting frame 931 drives one side of the screening plate body 91 to move upward, thus causing the screening plate body 91 to rotate around the rotating shaft 92, so the angle change work is completed;

[0058] After the angle reaches the appropriate height, the vibration motor 932 can be started to drive the entire screening plate body 91 to vibrate. When vibrating, the entire connecting frame 931 shakes, so that the connecting frame 931 drives the screening plate body 91 to vibrate. Thus, the purpose of vibrating and screening coal can be achieved.

[0059] In this application, according to Figure 4 、 Figure 5 and Figure 6 As shown, the conveying component includes a first conveying main body 4, a second conveying main body 5 and a third conveying main body 6. The first conveying main body 4 and the second conveying main body 5 are respectively arranged at the top positions of 2 screening components 9 for conveying the coal falling from the screening components 9. The third conveying main body 6 is arranged at the bottom of the screening bin body 2 for conveying the screened coal. The structures of the first conveying main body 4, the second conveying main body 5 and the third conveying main body 6 are the same, specifically including a driving device, a conveyor belt and a driving roller. The driving device is a motor. The motor transmits power to the driving roller through a reducer and a coupling. The rotation of the driving roller drives the conveyor belt to move through the friction force with the conveyor belt to complete the conveying work of coal;

[0060] Among them, the coal screened by the uppermost screening component 9 will fall to the upper part of the first conveying main body 4 and be output along with the first conveying main body 4. The coal falling after being screened by the screening component 9 will fall again to the upper part of the lower screening component 9 for screening work. After screening, the coal falling after being screened by the screening component 9 will fall to the upper part of the third conveying main body 6 and be output. The coal accumulated on the screening component 9 after being screened by the screening component 9 will fall onto the second conveying main body 5 and be output by the second conveying main body 5.

[0061] The foregoing has described the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements will occur to the present application, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A mobile screening station, comprising an auxiliary material unloading component (1), a screening bin (2) is arranged outside the auxiliary material unloading component (1), and raw coal from the outside falls into the screening bin (2) through the auxiliary material unloading component (1) for screening, characterized in that: The screening bin (2) is provided with a crushing and dust removal component (3), a transport component (8) and a screening component (9). The crushing and dust removal component (3) is arranged at the top of the screening bin (2), and a transport component (8) is arranged below it. A screening component (9) is arranged below the transport component (8). A conveying component is arranged at the top of the screening component (9) for transmitting the screened coal to the outside. The crushing and dust removal component (3) comprises a crushing mechanism and a dust removal mechanism, wherein the crushing mechanism is used to crush the raw coal transported by the transport component (8). A dust removal mechanism is arranged in the middle of the crushing mechanism for filtering and removing dust generated during the crushing of the raw coal, so as to improve the working environment of the screening station. The auxiliary unloading component (1) and the bottom of the screening bin (2) are provided with a moving component (7) for assisting the entire screening station in moving. The auxiliary unloading assembly (1) comprises a support frame (11), an unloading bin (12) and an unloading hole (13); support frames (11) are arranged on both sides of the unloading bin (12) for supporting work, and a unloading hole (13) is arranged on one side of the bottom of the unloading bin (12); the unloading hole (13) is arranged on a side biased towards the screening bin (2) and corresponds to the position of a receiving opening on the screening bin (2); the raw coal dropped from the unloading hole (13) enters the interior of the screening bin (2) through the receiving opening on the screening bin (2).

2. A mobile screening station according to claim 1, characterized in that: The screening bin body (2) comprises a fixed frame (21), a mounting top plate (22) and a screening shell (23); the fixed frames (21) are arranged on both sides of the outside of the screening shell (23) for support, and a detachable mounting top plate (22) is arranged on the top of the screening shell (23); a material receiving opening is arranged on one side of the mounting top plate (22) for material receiving, and a convex arc structure is arranged in the middle of the mounting top plate (22) for installation of the crushing and dust removal assembly (3).

3. A mobile screening station as claimed in claim 2, characterized in that: The crushing mechanism comprises a crushing roller body (31), a limiting roller body (32), a penetrating cylinder body (33) and a disassembling mechanism (36); the crushing roller body (31) and the limiting roller body (32) are connected via the disassembling mechanism (36); the outsides of the crushing roller body (31) and the limiting roller body (32) are both arranged as mesh structures, wherein a protruding block (35) is arranged in the middle of the mesh structure penetrated by the crushing roller body (31); the penetrating cylinder body (33) is coaxially connected in the middle of both sides of the limiting roller body (32); the penetrating cylinder body (33) penetrates the outer wall of the mounting top plate (22) and is connected thereto by a bearing; the insides of the penetrating cylinder body (33) and the limiting roller body (32) penetrate each other; The dust removal mechanism comprises a dust removal cloth (34), which is wound around the outside of the limiting roller body (32) and is used for dust removal.

4. A mobile screening station according to claim 3, characterized in that: The disassembly and assembly mechanism (36) is symmetrically arranged at the top ends of both sides of the crushing roller body (31) and the limiting roller body (32), and the disassembly and assembly mechanism (36) comprises a mounting block (361) and a mounting seat (362), wherein four groups of the mounting blocks (361) are arranged at equal intervals on the inner wall of the crushing roller body (31), and four groups of the mounting seats (362) are arranged at equal intervals on the outer wall of the limiting roller body (32), and a snap-fitting groove is arranged inside the mounting seat (362) for snap-fitting with the mounting block (361).

5. A mobile screening station according to claim 1, characterized in that: The moving assembly (7) includes tires arranged at equal intervals, and external traction equipment is connected to the traction assembly at the top of the auxiliary unloading assembly (1) to complete the traction and movement work.

6. A mobile screening station as claimed in claim 2, characterized in that: The transport assembly (8) comprises two rotating rollers, a transport belt and a fixed plate, the two sides of the two rotating rollers are limited by the fixed plate, and the rotating rollers and the fixed plate are connected by bearings, the outsides of the two rotating rollers are provided with a transport belt, the outside of one of the rotating rollers is provided with a drive motor, and the outside of the rotating roller is also provided with a linkage assembly (10) connected to the crushing and dust removal assembly (3); The linkage assembly (10) comprises a driving pulley (101), a transmission belt (102) and a driven pulley (103); the driving pulley (101) is coaxially connected to the outer side of the rotating roller, and a transmission belt (102) and a driven pulley (103) are provided on the outer side of the driving pulley (101) and connected to each other; the driven pulley (103) is coaxially connected to the outer side of the through-tube (33).

7. A mobile screening station as claimed in claim 3, characterized in that: The screening components (9) are symmetrically arranged in two groups inside the screening bin (2), and include a screening plate (91), a rotating shaft (92), a fixing component (93), an adjusting component (94) and a pushing component (95). The surface of the screening plate (91) is arranged as a mesh structure, wherein the mesh sizes of the screening plates (91) on the two screening components (9) are different, and the mesh sizes decrease from top to bottom. A rotating shaft is arranged in the middle of the screening plate (91). The shaft (92) is connected to the inner wall of the screening bin body (2); the top end of one side of the screening plate body (91) is connected to the fixing component (93); an adjusting component (94) is arranged inside the fixing component (93); and the bottom of the adjusting component (94) is pushed by a pushing component (95); the pushing component (95) pushes the adjusting component (94) to drive one side of the screening plate body (91) to move upward, thereby achieving the purpose of controlling the inclination angle of the screening plate body (91).

8. A mobile screening station according to claim 7, characterized in that: The fixing assembly (93) comprises a connecting frame (931) and a vibration motor (932); the connecting frame (931) has a U-shaped cross section and a vibration motor (932) is arranged at the top of the outer side thereof for controlling the screening plate (91) to perform vibration screening.

9. A mobile screening station according to claim 7, characterized in that: The adjustment assembly (94) comprises an intermediate transverse plate (941), an extension rod (942), a moving block (943), a compression spring (944), a limiting rod (945) and a vibration spring (946); the intermediate transverse plate (941) is arranged in the middle of the connecting frame (931), and the limiting rods (945) are arranged at the upper and lower top ends thereof and penetrate the connecting frame (931); the outer side of the limiting rod (945) is provided with a vibration spring (946) connected to the intermediate transverse plate (941); the outer side of the intermediate transverse plate (941) is provided with extension rods (942) and compression springs (944) at equal intervals; An extension rod (942) is provided, and a moving block (943) is integrally installed in the middle of the extension rod (942), the moving block (943) slides in a slide groove on the surface of the screening bin body (2), and compression springs (944) are provided above and below the moving block (943) and connected to the inner wall of the slide groove, a pushing component (95) is provided at the bottom of the extension rod (942), and the pushing component (95) includes a rotating motor (951) and a rotating cam (952), and the top end of the rotating motor (951) is coaxially connected to the rotating cam (952).

10. A mobile screening station according to claim 5, characterized in that: The conveying assembly comprises a first conveying body (4), a second conveying body (5) and a third conveying body (6). The first conveying body (4) and the second conveying body (5) are respectively arranged at the top positions of two screening assemblies (9) for conveying the coal falling from the screening assemblies (9). The third conveying body (6) is arranged at the bottom of the screening bin body (2) for conveying the coal falling from the screening bin. The first conveying body (4), the second conveying body (5) and the third conveying body (6) have the same structure, specifically comprising a driving device, a conveyor belt and a driving roller. The driving device is an electric motor. The electric motor transmits power to the driving roller through a reducer and a coupling. The driving roller rotates to drive the conveyor belt to move through the friction between the driving roller and the conveyor belt, thereby completing the coal conveying work.

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