Coal gangue crushing and filtering device

Abstract

The application provides a coal gangue crushing and filtering device, which comprises a driving shaft, a machine body provided with a feeding hopper and a driving motor at the top, a crushing assembly arranged in the machine body, a first filter screen, a second filter screen, a cleaning assembly and a knocking vibration assembly, the cavity bottom of the machine body is provided with a collecting box, the driving motor is drivingly connected with the driving shaft, the crushing assembly, the first filter screen and the second filter screen are sequentially arranged along the feeding direction between the feeding hopper and the collecting box, the cleaning assembly is rotatably arranged above the second filter screen and comprises bristles for cleaning the upper surface of the second filter screen, the vibration assembly is provided with a plurality of vibration knocking ends for knocking and vibrating the feeding hopper, the first filter screen, the cleaning assembly and the second filter screen respectively, and the driving motor is drivingly connected with the crushing assembly, the cleaning assembly and the plurality of vibration knocking ends through the driving shaft. By adopting the scheme, the filtering effect, the self-cleaning effect and the anti-blocking performance of the coal gangue crushing and filtering device on the coal gangue can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal gangue filtering, in particular to a coal gangue crushing and filtering device. BACKGROUND

[0002] Coal gangue is a solid waste discharged in the process of coal mining and coal washing, which is a black gray rock with low carbon content and harder than coal, associated with coal seams during coal formation. According to the main mineral content, coal gangue can be divided into clay rock, sandstone rock, carbonate and aluminum rock. According to the source and final state, coal gangue can be divided into three categories: tunneling gangue, coal washing gangue and natural gangue. Coal gangue can replace clay as a raw material for brick making, which can save farmland. In order to ensure the quality of the brick, the mixed impurities in the coal gangue and the particles that do not meet the size requirements need to be filtered out, and then a filtering device is used.

[0003] The patent No. CN113417694A discloses a coal gangue crushing and ball milling and grouting device, which realizes the crushing of coal gangue through crushing teeth, realizes the filtering of crushed coal gangue through a filter screen, and repeatedly taps the lower surface of the sliding plate through the rubber tapping piece, so that the filter screen is shaken to prevent the filter screen from being blocked and unable to filter.

[0004] However, the above-mentioned device still has the problems of single filtering effect and cleaning effect of the filter screen, and easy accumulation of coal gangue material at the feed inlet, which limits the filtering effect of the coal gangue and easily causes the coal gangue material to block the filter screen or the feed inlet, thereby affecting the normal use of the device. SUMMARY

[0005] The present application provides a coal gangue crushing and filtering device to improve the filtering effect, self-cleaning effect and anti-blocking performance of the coal gangue crushing and filtering device.

[0006] In order to achieve the above-mentioned purpose, the present application provides a coal gangue crushing and filtering device, which comprises a driving shaft and a machine body provided with a feed hopper and a driving motor at the top, the cavity bottom of the machine body is provided with a collection box, the driving motor is drivingly connected with the driving shaft, the driving shaft penetrates into the machine body and the end thereof extends above the collection box, the coal gangue crushing and filtering device further comprises a crushing assembly, a first filter screen, a second filter screen, a cleaning assembly and a knocking and vibrating assembly arranged in the machine body, the crushing assembly, the first filter screen and the second filter screen are sequentially arranged between the feed hopper and the collection box along the falling direction, the cleaning assembly is rotatably arranged above the second filter screen, the cleaning assembly comprises bristles for cleaning the upper surface of the second filter screen, the vibrating assembly has a plurality of vibrating and knocking ends, the plurality of vibrating and knocking ends are respectively used for knocking and vibrating the feed hopper, the first filter screen, the cleaning assembly and the second filter screen, and the driving motor is drivingly connected with the crushing assembly, the cleaning assembly and the plurality of vibrating and knocking ends through the driving shaft.

[0007] Further, the coal gangue crushing and filtering device further comprises a fixed cylinder, a knocking lever, a knocking rod and a first torsional spring, the fixed cylinder is arranged on the cavity top wall of the machine body and surrounds the driving shaft rod, the side wall of the fixed cylinder is provided with a through opening, the knocking rod passes through the through opening and is hinged to the fixed cylinder, the knocking rod is swingably arranged around the hinged position of the knocking rod and the fixed cylinder, the first torsional spring is installed at the hinged position and connected with the knocking rod and the fixed cylinder respectively, the knocking lever is fixedly arranged on the outer periphery of the driving shaft rod and abuttingly connected with one end of the knocking rod penetrating into the fixed cylinder, the other end of the knocking rod forms a vibration knocking end and abuttingly connected with the outer periphery of the feeding hopper penetrating into the machine body, so as to drive the knocking rod to intermittently knock and vibrate the bottom of the feeding hopper, and the first torsional spring is used to drive the knocking rod to reset.

[0008] Further, the coal gangue crushing and filtering device further comprises a fixed cylinder arranged on the cavity top wall of the machine body and surrounding the driving shaft rod, the crushing assembly comprises a plurality of crushing rollers arranged along the circumference of the driving shaft rod, the crushing rollers are rotatably arranged on the driving shaft rod and connected with the driving shaft rod through bearing members and can rotate around the driving shaft rod, a gear is fixedly arranged on each crushing roller, the bottom end surface of the fixed cylinder is provided with a plurality of protruding teeth, the gears are engaged with the plurality of protruding teeth and can roll along the circumference of the fixed cylinder.

[0009] Further, the first filter screen comprises a first adapter plate and a first filter screen arranged around the first adapter plate, the driving shaft rod is drivingly connected with the first adapter plate, the vibration assembly comprises an adapter gear set, a transmission lever and a cam member for forming a vibration knocking end, the lower side of the first adapter plate is provided with a support plate for supporting the transmission lever, the end of the transmission lever extending to the lower side of the first filter screen is connected with the cam member, the driving shaft rod is drivingly connected with the transmission lever through the adapter gear set, so as to drive the cam member to rotate and intermittently knock and vibrate the first filter screen.

[0010] Further, the transmission lever and the cam member are in multiple groups, the multiple groups of transmission levers and cam members are distributed along the circumference of the driving shaft rod, each transmission lever is drivingly connected with the driving shaft rod through the adapter gear set, and the multiple cam members knock and vibrate different positions of the bottom of the first filter screen along the circumference of the first adapter plate.

[0011] Further, the second filter screen is slidably arranged in the cavity of the machine body and abuttingly connected with the inner wall of the cavity of the machine body, the second filter screen comprises a second adapter plate and a second filter screen arranged around the second adapter plate, the vibration assembly comprises a first protruding block and a second protruding block, the second protruding block is arranged below the second adapter plate, the first protruding block is arranged on the bottom outer periphery of the driving shaft rod, the top of the first protruding block forms a vibration knocking end and partially overlaps with the bottom of the second protruding block in the circumferential direction of the driving shaft rod, and the first protruding block pushes the second protruding block and the second filter screen to intermittently rise and fall as a whole during the rotation of the driving shaft rod.

[0012] Further, the first and second protrusions are multiple, the multiple first protrusions are distributed under the second adapter plate in a circumferential direction of the second adapter plate, the multiple second protrusions are arranged on the outer periphery of the driving shaft in a circumferential direction of the driving shaft, and the vibration assembly further comprises an elastic member arranged between the driving shaft and the second adapter plate, the elastic member being compressed when the first protrusions push the second filter screen to rise as a whole.

[0013] Further, the cleaning assembly is a cleaning brush comprising a mounting plate and bristles, the bristles being arranged on the side of the mounting plate facing the second filter screen and abutting the upper surface of the second filter screen, the mounting plate being fixedly arranged on the outer periphery of the driving shaft in a shape matching that of the second filter screen, the vibration assembly comprising a beating rod arranged above the mounting plate, one end of the beating rod being hinged to the mounting plate, the beating rod being swingably arranged along a vertical direction about the hinged position and forming a vibration knocking end, the inner wall of the machine body being provided with multiple second magnetic sheets in a circumferential direction, the end of the beating rod away from the hinged position being provided with a first magnetic sheet, the multiple second magnetic sheets and the first magnetic sheet being intermittently adsorbed and driving the beating rod to swing back and forth during the rotation of the cleaning assembly along with the driving shaft.

[0014] Further, the beating rod is multiple, the multiple beating rods being distributed in a circumferential direction of the driving shaft, and the vibration assembly further comprises a second torsional spring, one second torsional spring being arranged corresponding to the hinged position of the mounting plate for any beating rod, the second torsional spring being used to drive the beating rod to swing back.

[0015] Further, the first filter screen is a mesh structure with a W-shaped cross section, the shape of the crushing assembly matching that of the first filter screen and the bottom of the crushing assembly being in contact with the top surface of the first filter screen; the second filter screen is a mesh structure with an inverted V-shaped cross section, the machine body being provided with a discharge port on the side wall, the fitting position of the second filter screen and the machine body being below the discharge port, and the cross-sectional shape of the cleaning assembly matching that of the second filter screen.

[0016] The technical scheme of the present application provides a coal gangue crushing and filtering device, which comprises a driving shaft and a machine body provided with a feeding hopper and a driving motor at the top, the bottom of the cavity of the machine body being provided with a collecting box, the driving motor being drivingly connected with the driving shaft, the driving shaft penetrating into the machine body and extending above the collecting box, the coal gangue crushing and filtering device further comprising a crushing assembly, a first filter screen, a second filter screen, a cleaning assembly and a knocking vibration assembly arranged in the machine body, the crushing assembly, the first filter screen and the second filter screen being sequentially arranged between the feeding hopper and the collecting box in a feeding direction, the cleaning assembly being rotatably arranged above the second filter screen, the cleaning assembly comprising bristles for cleaning the upper surface of the second filter screen, the vibration assembly having multiple vibration knocking ends, the multiple vibration knocking ends being used to knock and vibrate the feeding hopper, the first filter screen, the cleaning assembly and the second filter screen respectively, and the driving motor being drivingly connected with the crushing assembly, the cleaning assembly and the multiple vibration knocking ends through the driving shaft.

[0017] With the scheme, the coal gangue enters from the feeding hopper at the top of the machine body, the driving motor drives the driving shaft rod to drive the crushing assembly, the cleaning assembly and the multiple vibration knocking ends to rotate, the coal gangue entering the cavity of the machine body will be crushed by the rotating crushing assembly first, so as to facilitate the filtration of the coal gangue, and then the crushed coal gangue will sequentially pass through the first filter screen and the second filter screen, and the falling coal gangue material after the double filtration of the crushed coal gangue will fall into the collection box, completing the crushing and filtration of the coal gangue. Among them, the double filtration is conducive to improving the filtration effect and filtration efficiency of the crushed coal gangue. On the other hand, during the crushing and filtration of the coal gangue, the cleaning assembly will rotate with the driving shaft rod and clean the upper surface of the second filter screen through the bristles, avoiding the accumulation and blockage of the second filter screen. At the same time, the multiple vibration knocking ends will also intermittently knock and vibrate the feeding hopper, the first filter screen, the second filter screen and the cleaning assembly with the rotation of the driving shaft rod, avoiding the accumulation and blockage of the bristles of the cleaning assembly, and ensuring the reliability and stability of the coal gangue crushing and filtration device. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description of the application, explain the application. The detailed description of the application and its illustrations serve to explain the application without imposing undue limitation on the application. In the drawings:

[0019] Figure 1 A structure schematic view of the coal gangue crushing and filtration device provided by the embodiment of the application is shown;

[0020] Figure 2 A structure schematic view of the coal gangue crushing and filtration device provided by the embodiment of the application is shown; Figure 1 An enlarged view of position A in FIG. 4 is shown;

[0021] Figure 3 An enlarged view of position B in FIG. 4 is shown; Figure 1 An enlarged view of position B in FIG. 4 is shown;

[0022] Figure 4 An enlarged view of position C in FIG. 4 is shown; Figure 1 An enlarged view of position C in FIG. 4 is shown;

[0023] Figure 5 An enlarged view of position D in FIG. 4 is shown; Figure 1 An enlarged view of position D in FIG. 4 is shown;

[0024] Figure 6 An enlarged view of position D in FIG. 4 is shown; Figure 1 A structure top view of the lever, the fixed cylinder, the first torsional spring and the knocking rod in FIG. 4 is shown;

[0025] Figure 7 A structure schematic view of the crushing assembly in FIG. 4 is shown; Figure 1 A structure schematic view of the crushing assembly in FIG. 4 is shown;

[0026] Figure 8 The structure diagram of the knocking rod and the cleaning brush is shown. Figure 1 The structure diagram of the knocking rod and the cleaning brush is shown.

[0027] Wherein, the above-mentioned drawings include the following reference signs:

[0028] 1, machine body; 2, feed hopper; 3, motor; 4, shaft rod; 5, first filter screen; 6, second filter screen; 7, discharge port; 8, collection box; 9, fixed cylinder; 10, through port; 11, knocking rod; 12, first torsional spring; 13, knocking lever; 14, crushing roller; 15, gear; 16, protrusion; 171, adapter gear set; 172, transmission rod; 173, cam piece; 18, elastic piece; 19, first protrusion; 20, second protrusion; 21, cleaning brush; 22, knocking rod; 23, second torsional spring; 24, first magnetic sheet; 25, second magnetic sheet. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0030] As Figures 1 to 8 shown, the embodiment of the present application provides a coal gangue crushing and filtering device, which comprises a machine body 1 provided with a feed hopper 2 and a driving motor 3 at the top and a driving shaft rod 4, the cavity bottom of the machine body 1 is provided with a collection box 8, the driving motor 3 is drivingly connected with the driving shaft rod 4, the driving shaft rod 4 penetrates into the machine body 1 and extends above the collection box 8 at the end, and the coal gangue crushing and filtering device further comprises a crushing assembly, a first filter screen 5, a second filter screen 6, a cleaning assembly and a knocking and vibrating assembly arranged in the machine body 1, the crushing assembly, the first filter screen 5 and the second filter screen 6 are sequentially arranged between the feed hopper 2 and the collection box 8 along the material falling direction, the cleaning assembly is rotatably arranged above the second filter screen 6, the cleaning assembly comprises bristles for cleaning the upper surface of the second filter screen 6, the vibrating assembly is provided with a plurality of vibrating and knocking ends, the plurality of vibrating and knocking ends are respectively used for knocking and vibrating the feed hopper 2, the first filter screen 5, the cleaning assembly and the second filter screen 6, and the driving motor 3 is drivingly connected with the crushing assembly, the cleaning assembly and the plurality of vibrating and knocking ends through the driving shaft rod 4.

[0031] In the embodiment, the coal gangue enters from the feeding hopper 2 on the top of the machine body 1, the driving motor 3 drives the driving shaft rod 4 to drive the crushing assembly, the cleaning assembly and the plurality of vibration knocking ends to rotate, the coal gangue entering the cavity of the machine body 1 is first crushed by the rotating crushing assembly, so as to facilitate the filtration of the coal gangue, and then the crushed coal gangue sequentially passes through the first filter screen 5 and the second filter screen 6. The falling coal gangue material after the double filtration of the crushed coal gangue falls into the collection box 8, and the crushing and filtration of the coal gangue are completed. The double filtration is beneficial to improving the filtration effect and filtration efficiency of the crushed coal gangue. On the other hand, in the process of crushing and filtering the coal gangue, the cleaning assembly rotates with the driving shaft rod 4 and cleans the upper surface of the second filter screen 6 through the bristles, so as to avoid the accumulation and blockage of the second filter screen 6. At the same time, the plurality of vibration knocking ends also intermittently knock and vibrate the feeding hopper 2, the first filter screen 5, the second filter screen 6 and the cleaning assembly with the rotation of the driving shaft rod 4, so as to avoid the accumulation and blockage of the bristles of the feeding hopper 2, the first filter screen 5, the second filter screen 6 and the cleaning assembly, and ensure the reliability and stability of the coal gangue crushing and filtering device.

[0032] It can be understood that the feeding hopper 2 can be multiple, such as two feeding hoppers 2 symmetrically distributed on both sides of the driving assembly in the embodiment.

[0033] As shown in Figure 1 , Figure 2 and Figure 6 , the coal gangue crushing and filtering device further comprises a fixed cylinder 9, a knocking rod 11, a first torsional spring 12 and a knocking rod 11. The fixed cylinder 9 is arranged on the cavity top wall of the machine body 1 and surrounds the driving shaft rod 4. The side wall of the fixed cylinder 9 has a through port 10. The knocking rod 11 passes through the through port 10 and is hinged to the fixed cylinder 9. The knocking rod 11 is swingably arranged around the hinged position of the knocking rod 11 and the fixed cylinder 9. The first torsional spring 12 is installed at the hinged position and connected with the knocking rod 11 and the fixed cylinder 9 respectively. The knocking rod 13 is fixedly arranged on the outer periphery of the driving shaft rod 4 and abuts with one end of the knocking rod 11 penetrating into the fixed cylinder 9. The other end of the knocking rod 11 forms a vibration knocking end and abuts with the outer periphery of the bottom of the feeding hopper 2 penetrating into the machine body 1, so as to drive the knocking rod 11 to intermittently knock and vibrate the bottom of the feeding hopper 2. The first torsional spring 12 is used to drive the knocking rod 11 to reset.

[0034] In the embodiment, the through hole 10 of the fixed cylinder 9 has a parallel adapter rod to the driving shaft rod 4, the adapter rod passes through a knocking rod 11 located in the through hole 10 and forms a swing center, the knocking rod 11 is horizontally swingably arranged around the swing center, a first torsional spring 12 is arranged at the swing center position and connected with the adapter rod of the fixed cylinder 9 and the knocking rod 11 at both ends, and in the initial state, a knocking vibration end of the knocking rod 11 abuts against the bottom of the feeding hopper 2 passing through the machine body 1. In the process of crushing and filtering coal gangue, the knocking rod 11 is pushed to rotate as a whole around the swing center by the abutting and pushing of the push rod 13 passing through one end of the fixed cylinder 9 and rotating with the driving shaft rod 4, the other end of the knocking rod 11 rotates away from the bottom of the feeding hopper 2 passing through the machine body 1, and the first torsional spring 12 is compressed, then the push rod 13 continues to rotate and is disengaged from the knocking rod 11, the knocking rod 11 rotates back to the original position under the action of the first torsional spring 12 and knocks against the bottom of the feeding hopper 2, so as to realize one-time knocking reciprocating swing of the knocking rod 11 to the feeding hopper 2. With the continuous rotation of the driving shaft rod 4, the knocking rod 11 will knock the feeding hopper 2 intermittently for multiple times, so as to avoid the situation that coal gangue is blocked and accumulated in the feeding hopper 2 to cause feeding obstruction.

[0035] It should be noted that the number of the knocking rod 11, the first torsional spring 12 and the push rod 13 can be adjusted according to actual conditions. For example, as shown in the figure, the feeding hopper 2 in the embodiment is two, so two sets of knocking rods 11 and first torsional springs 12 are correspondingly arranged, and the two sets of knocking rods 11 and first torsional springs 12 are symmetrically distributed on both sides of the driving shaft rod 4 and respectively stop against the bottom of the feeding hopper 2 on the corresponding side. Figure 6 The six push rods 13 are equally spaced along the circumference of the driving shaft rod 4 to improve the pushing frequency of the knocking rod 11 on both sides when the driving shaft rod 4 rotates, thereby improving the knocking vibration frequency of the feeding hopper 2 and further ensuring the reliability of the feeding hopper 2.

[0036] Preferably, the push rod 13 is an "L" type rod, the push rod 13 is disengaged from the end of the knocking rod 11 to improve the pushing effect of the knocking rod 11, and the included angle of the swing centers of the two knocking rods 11 on the circumference of the driving shaft rod 4 is equal to the included angle of the two feeding hoppers 2 on the circumference of the driving shaft rod 4.

[0037] As shown in the figure, Figure 1 , Figure 3 and Figure 7As shown, the coal gangue crushing and filtering device also includes a fixed cylinder 9 that passes through the top wall of the cavity of the machine body 1 and is arranged around the drive shaft 4. The crushing component includes a plurality of crushing rollers 14 arranged circumferentially along the drive shaft 4. The crushing rollers 14 are rotatably arranged with the drive shaft 4 and are rotatably connected to the drive shaft 4 through bearing components. A gear 15 is fixedly sleeved on each crushing roller 14. The bottom surface of the fixed cylinder 9 has a plurality of protruding teeth 16. The gear 15 and the plurality of protruding teeth 16 mesh and can roll circumferentially along the gear 15 and the fixed cylinder 9.

[0038] In this embodiment, there are four crushing rollers 14, which are arranged at equal angles along the circumference of the drive shaft 4. Multiple protruding teeth 16 are distributed on the annular surface at the bottom of the fixed cylinder 9. The spacing or angle between any two adjacent protruding teeth 16 is adapted to the gears 15 arranged on the crushing rollers 14 to ensure the reliability of the meshing between the gears 15 and the multiple protruding teeth 16. During the crushing and filtering of coal gangue, the drive shaft 4 drives the multiple crushing rollers 14 to revolve around the drive shaft 4. Since the gears 15 on any crushing roller 14 mesh with the protruding teeth 16, and the crushing roller 14 and the drive shaft 4 are rotatably connected by bearings, the gears 15 will mesh and roll along the extension direction of the multiple protruding teeth 16 during the revolution around the drive shaft 4, and drive the entire crushing roller 14 to rotate. This achieves the simultaneous revolution and rotation of the crushing roller 14, thereby improving the crushing effect on the coal gangue.

[0039] Preferably, the outer periphery of the crushing roller 14 has multiple pointed crushing protrusions to further improve the crushing effect on coal gangue.

[0040] like Figure 1 and Figure 3 As shown, the first filter screen 5 includes a first adapter plate and a first filter screen arranged around the first adapter plate. The drive shaft 4 is driven to the first adapter plate. The vibration assembly includes an adapter gear set 171, a transmission rod 172, and a cam member 173 for forming a vibration striking end. A support plate for supporting the transmission rod 172 is provided below the first adapter plate. The end of the transmission rod 172 that extends horizontally to the bottom of the first filter screen is connected to the cam member 173. The drive shaft 4 is driven to the transmission rod 172 through the adapter gear set 171 to drive the cam member 173 to rotate and intermittently strike and vibrate the first filter screen 5.

[0041] In this embodiment, the adapter gear set 171 is a bevel gear set, and the cam element 173 is eccentrically set at one end of the transmission rod 172. During the crushing and filtering of coal gangue, the drive shaft rod 4 drives the transmission rod 172 to rotate through the adapter gear set. The transmission rod 172 drives the cam element 173 to rotate so that the cam element 173 can intermittently strike the bottom of the first filter screen, thereby realizing the intermittent vibration of the first filter screen 5, which can both accelerate the falling efficiency of coal gangue and prevent the mesh of the first filter screen from becoming clogged.

[0042] Preferably, the rotation radius of the cam 173 is greater than the distance from the cam 173 to the bottom of the first filter screen, so as to ensure the striking effect of the cam 173 on the bottom of the first filter screen and the vibration effect of the first filter screen.

[0043] like Figure 1 As shown, there are multiple sets of transmission rods 172 and cam elements 173, distributed circumferentially along the drive shaft 4. Each transmission rod 172 is connected to the drive shaft 4 via a transition gear set 171. Multiple cam elements 173 strike and vibrate different positions on the bottom of the first filter screen 5 along the circumference of the first transition plate. This arrangement improves the vibration effect and the overall coverage of the first filter screen 5.

[0044] like Figure 1 and Figure 4 As shown, the second filter 6 is slidably disposed in the cavity of the body 1 and is limited to the inner wall of the cavity of the body 1. The second filter 6 includes a second adapter plate and a second filter surrounding the second adapter plate. The vibration assembly includes a first protrusion 19 and a second protrusion 20. The second protrusion 20 is disposed below the second adapter plate. The first protrusion 19 is disposed on the bottom outer periphery of the drive shaft 4. The top of the first protrusion 19 forms a vibration striking end and coincides with the bottom of the second protrusion 20 in the circumferential direction of the drive shaft 4. The first protrusion 19 pushes the second protrusion 20 and the second filter 6 to intermittently rise and fall as a whole during the rotation of the drive shaft 4.

[0045] In this embodiment, the coal gangue filtered by the first filter screen 5 falls onto the second filter screen 6. When the drive shaft 4 rotates, it drives the first protrusion 19 to rotate. During the rotation of the first protrusion 19, it intermittently abuts against the second protrusion 20 at the bottom of the second adapter plate. During the process of the first protrusion 19 and the second protrusion 20 abutting against each other and separating, the second protrusion 20 and the second filter screen 6 as a whole are first lifted up and then lowered with the rotation of the first protrusion 19, thereby realizing the intermittent vibration of the second filter screen 6 as a whole. This can both accelerate the falling efficiency of the coal gangue and prevent the mesh of the second filter screen from becoming clogged.

[0046] Specifically, there are multiple first protrusions 19 and multiple second protrusions 20. Multiple first protrusions 19 are distributed at intervals along the circumference of the second adapter plate below the second adapter plate. Multiple second protrusions 20 are arranged at intervals along the circumference of the drive shaft 4 on the outer periphery of the drive shaft 4. The vibration assembly also includes an elastic element 18 disposed between the drive shaft 4 and the second adapter plate. When the first protrusions 19 push the second filter screen 6 to rise as a whole, the elastic element 18 is compressed.

[0047] In the embodiment, the first and second protrusions are distributed at equal angles along the circumference of the drive shaft 4 to ensure the driving effect of intermittent vibration on the second filter screen 6, avoiding the case that the vibration effect is not obvious due to the too short interval time between two adjacent vibrations. By arranging the elastic member 18, the reliability of the overall reset of the second filter screen 6 is ensured, avoiding the case that the second filter screen 6 is difficult to reset by gravity after being lifted, resulting in poor vibration effect or even vibration failure.

[0048] As shown in Figure 1 , Figure 5 and Figure 8 , the cleaning assembly is a cleaning brush 21 including a mounting plate and bristles, the bristles are arranged on the side of the mounting plate facing the second filter screen 6 and are in contact with the upper surface of the second filter screen 6, the shape of the mounting plate is adapted to the shape of the second filter screen 6 and is fixedly sleeved on the outer periphery of the drive shaft 4, the vibration assembly includes a beating rod 22 arranged above the mounting plate, one end of the beating rod 22 is hinged to the mounting plate, the beating rod 22 is swingably arranged along the vertical direction around the hinged position of the beating rod 22 to the mounting plate and forms a vibration knocking end, a plurality of second magnetic sheets 25 are arranged on the inner wall of the machine body 1 in the circumferential direction, a first magnetic sheet 24 is arranged on the end of the beating rod 22 away from the hinged position, during the rotation of the cleaning assembly with the drive shaft 4, the plurality of second magnetic sheets 25 and the first magnetic sheet 24 are intermittently adsorbed and drive the beating rod 22 to swing back and forth.

[0049] In the embodiment, when the drive shaft 4 drives the cleaning brush 21 to rotate, the beating rod 22 arranged on the top of the mounting plate of the cleaning brush 21 will rotate synchronously, the first magnetic sheet 24 at the end of the beating rod 22 will be intermittently coincidently adsorbed with the plurality of second magnetic sheets 25 on the inner wall of the machine body 1 during the rotation, when the first magnetic sheet 24 coincides with any one of the second magnetic sheets 25 in the position of the drive shaft 4 in the circumferential direction, the corresponding second magnetic sheet 25 will adsorb the first magnetic sheet 24 to rise and further make the beating rod 22 swing upward around the hinged position of the beating rod 22 to the mounting plate, the first magnetic sheet 24 will gradually be spaced apart from the second magnetic sheet 25 in the circumferential direction during the rotation with the drive shaft 4, the adsorption effect disappears, the beating rod 22 swings downward and knocks on the mounting plate to beat the cleaning brush 21 as a whole and knock off the small materials remaining on the bristles of the cleaning brush 21, realizing the self-cleaning of the cleaning brush 21.

[0050] Specifically, the beating rod 22 is a plurality of beating rods 22, the plurality of beating rods 22 are distributed at intervals along the circumference of the drive shaft 4, the vibration assembly further includes a second torsional spring 23, one second torsional spring 23 is arranged corresponding to the hinged position of any one of the beating rods 22 to the mounting plate, the second torsional spring 23 is used to drive the beating rod 22 to swing back.

[0051] In the embodiment, the beating effect on the cleaning brush 21 is improved by the plurality of beating rods 22, and the cleaning effect on the cleaning brush 21 is ensured. On the other hand, the second torsional spring 23 is arranged at the hinged position of any one of the beating rods 22 and the mounting plate in the embodiment, the two ends of the second torsional spring 23 are connected with the mounting plate and the corresponding beating rod 22 respectively, the second torsional spring 23 is compressed when the beating rod 22 swings upward around the hinged position thereof and the mounting plate, and the beating rod 22 swings downward to reset under the elastic force of the second torsional spring 23 in the process of the rotation of the first magnetic sheet 24 and the adsorption effect of the corresponding second magnetic sheet 25. The arrangement ensures the reliability of the reset swing of the beating rod 22, and is beneficial to ensuring the beating effect of the beating rod 22 on the cleaning brush 21 and avoiding the condition that the beating force is small and the vibration effect is poor when the beating rod 22 swings downward to reset by the dead weight.

[0052] As shown in Figure 1 The first filter screen 5 is a mesh structure with a W-shaped cross section, the shape of the crushing assembly is matched with the shape of the first filter screen 5 and the bottom of the crushing assembly is in contact with the top surface of the first filter screen 5; the second filter screen 6 is a mesh structure with an inverted V-shaped cross section, the side wall of the machine body 1 is provided with a discharge port 7, the matching position of the second filter screen 6 and the machine body 1 is located below the discharge port 7, and the cross-sectional shape of the cleaning assembly is matched with the cross-sectional shape of the second filter screen 6.

[0053] In the embodiment, the shape of the crushing roller 14 is matched with the first filter screen 5 and is in contact with the top surface of the first filter screen 5, so that the crushing roller 14 can crush the coal gangue falling on the first filter screen 5 during the rotation of the crushing roller 14, the completeness and the crushing effect of the crushing of the coal gangue between the feed hopper 2 and the first filter screen 5 are ensured, and the condition that the coal gangue is not crushed and directly falls on the first filter screen 5 through the area between the two crushing rollers 14 is avoided. Meanwhile, the second filter screen 6 is inclined downward in the extension direction from the center to the outer periphery, the matching edge of the second filter screen and the inner wall of the machine body 1 is located below the discharge port 7, and the bristles of the cleaning brush 21 can clean the unfiltered coal gangue material on the second filter screen during the rotation of the cleaning brush 21, the concentrated coal gangue material moves along the inclined direction of the second filter screen and is discharged from the discharge port 7, so as to ensure the cleaning effect of the second filter screen. It should be noted that the discharge port 7 can be multiple, and the multiple discharge ports 7 are distributed along the circumference of the machine body 1.

[0054] In summary, the coal gangue crushing and filtering device provided by the application has the following working principle:

[0055] Firstly, the coal gangue is poured from the feeding hopper 2, and then the driving motor 3 is started to drive the driving shaft rod 4 to rotate, the driving shaft rod 4 rotates to drive the push rod 13 to rotate and push the knocking rod 11 to swing and compress the first torsional spring 12, after the push rod 13 and the knocking rod 11 are disengaged, the knocking rod 11 is reset under the action of the first torsional spring 12 and knocks the bottom of the feeding hopper 2, so that the material can be prevented from being blocked in the feeding hopper 2;

[0056] Meanwhile, the driving shaft rod 4 rotates to drive the crushing assembly to rotate, while the crushing roller 14 revolves with the driving shaft rod 4, the self-rotation of the crushing roller 14 is realized through the meshing of the gear 15 and the plurality of protruding teeth 16, so that the coal gangue is crushed and the crushing effect of the entering coal gangue is improved, the crushed coal gangue is leaked through the first filter screen 5, and the coal gangue with large blocks is further crushed by the crushing roller 14;

[0057] Meanwhile, the driving shaft rod 4 rotates to drive the transmission rod 172 and the cam member 173 to rotate through the adapter gear set 171, the intermittent impact on the first filter screen 5 is realized through the rotation of the cam member 173, so that the first filter screen 5 vibrates, which can not only accelerate the falling of the coal gangue, but also prevent the mesh of the first filter screen 5 from being blocked;

[0058] Meanwhile, the driving shaft rod 4 rotates to drive the first protruding block 19 to rotate, the first protruding block 19 rotates to intermittently abut with the second protruding block 20, the up-down sliding of the second filter screen 6 is realized in combination with the second torsional spring 23, so that the second filter screen 6 vibrates, which can not only accelerate the falling of the coal gangue, but also prevent the mesh of the second filter screen 6 from being blocked;

[0059] Meanwhile, the driving shaft rod 4 rotates to drive the cleaning brush 21 to rotate, the coal gangue material on the second filter screen 6 is cleaned after the cleaning brush 21 rotates, and then the impurities on the second filter screen 6 are discharged from the discharge port 7, the coal gangue material filtered through the second filter screen 6 falls into the collecting box 8; the beating rod 22 rotates synchronously with the cleaning brush 21, the beating rod 22 reciprocatingly swings and knocks the cleaning brush 21 under the action of the intermittent coincident adsorption of the first magnetic sheet 24 and the plurality of second magnetic sheets 25 and the assistance of the second torsional spring 23, so that the residual small material on the cleaning brush 21 is knocked and cleaned.

[0060] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and the present application can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0061] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0062] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the application unless specifically so stated. It is to be understood that the drawings are not necessarily to scale of the various parts of the device shown therein. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail in order to avoid obscuring the present application. In each instance herein any specific examples are meant to be illustrative only and not restrictive. Other examples of the example embodiments can have different values. It is noted that like references and designations can indicate like items in the drawings, and once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0063] In the description of the application, it is to be understood that the orientation or positional relationships indicated by orientation words such as "front, back, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description. Without the opposite indication, these orientation words do not indicate and imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the application. The orientation words "inner, outer" refer to the inner and outer relative to the contour of the parts themselves.

[0064] For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical", "horizontal", and derivatives thereof shall relate to the device, as it is shown in the drawings, and shall not be construed as limiting the position of the device during use or operation in a particular orientation unless noted herein. Terms concerning descriptions of spatial orientations, such as "on", "above", "below", "top", "bottom", "side", "front", "back", "positioned on", "positioned above", "positioned below", "positioned on top of", "positioned on bottom of", "positioned to the left of", "positioned to the right of", "positioned above of", "positioned below of", "positioned to the left of", "positioned to the right of", "front", "back", "vertical", "horizontal", and the like, shall relate to the device as it is shown in the figures, unless otherwise noted herein. It is to be understood that such terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" other elements or "below" other elements will then be oriented "below" other elements or "above" other elements. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90° or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0065] In addition, it should be noted that the use of "first", "second", "third", etc. words to describe various components is only intended to distinguish the components from one another, and does not connote a special order or sequence. Unless otherwise stated, the use of these words in the description is not intended to limit the scope of the application.

Claims

1. A coal gangue crushing and filtering device, comprising a driving shaft rod (4) and a machine body (1) with a feeding hopper (2) and a driving motor (3) mounted on the top, the cavity bottom of the machine body (1) is provided with a collecting box (8), the driving motor (3) is drivingly connected with the driving shaft rod (4), the driving shaft rod (4) penetrates into the machine body (1) and extends above the collecting box (8) at the end, characterized in that, The coal gangue crushing and filtering device further comprises a crushing assembly, a first filter screen (5), a second filter screen (6), a cleaning assembly and a knocking and vibrating assembly arranged in the machine body (1), the crushing assembly, the first filter screen (5) and the second filter screen (6) are sequentially arranged between the feeding hopper (2) and the collecting box (8) along a feeding direction, the cleaning assembly is rotatably arranged above the second filter screen (6), the cleaning assembly comprises bristles for cleaning an upper surface of the second filter screen (6), the vibrating assembly has a plurality of vibrating and knocking ends, and the vibrating and knocking ends are respectively used for knocking and vibrating the feeding hopper (2), the first filter screen (5), the cleaning assembly and the second filter screen (6), and the driving motor (3) is drivingly connected with the crushing assembly, the cleaning assembly and the vibrating and knocking ends through the driving shaft (4); The cleaning assembly is a cleaning brush (21) comprising a mounting plate and the bristles, the bristles are arranged on a side of the mounting plate facing the second filter screen (6) and are attached to an upper surface of the second filter screen (6), the mounting plate is shaped to be adapted to the second filter screen (6) and is fixedly sleeved on an outer periphery of the driving shaft (4), the vibrating assembly comprises a beating rod (22) arranged above the mounting plate, one end of the beating rod (22) is hingedly connected to the mounting plate, the beating rod (22) is swingably arranged along a vertical direction around the hinged position of the beating rod (22) to the mounting plate and forms one of the vibrating and knocking ends, a plurality of second magnetic sheets (25) are circumferentially arranged on an inner wall of the machine body (1), a first magnetic sheet (24) is arranged on an end of the beating rod (22) away from the hinged position, and during rotation of the cleaning assembly with the driving shaft (4), the second magnetic sheets (25) and the first magnetic sheet (24) are intermittently adsorbed to reciprocatingly swing the beating rod (22).

2. The coal gangue crushing and filtering device according to claim 1, characterized in that, The coal gangue crushing and filtering device further comprises a fixing cylinder (9), a pushing rod (13), a knocking rod (11) and a first torsional spring (12), the fixing cylinder (9) is arranged on the cavity top wall of the machine body (1) and around the driving shaft rod (4), the side wall of the fixing cylinder (9) is provided with a through opening (10), the knocking rod (11) passes through the through opening (10) and is hinged to the fixing cylinder (9), the knocking rod (11) is swingably arranged around the hinged position of the knocking rod (11) and the fixing cylinder (9), the first torsional spring (12) is arranged at the hinged position and connected with the knocking rod (11) and the fixing cylinder (9) respectively, the pushing rod (13) is fixedly arranged on the outer periphery of the driving shaft rod (4) and abuttingly connected with one end of the knocking rod (11) penetrating into the fixing cylinder (9), the other end of the knocking rod (11) forms a vibration and knocking end and abuttingly connected with the outer periphery of the feeding hopper (2) penetrating into the machine body (1), so as to drive the knocking rod (11) to intermittently knock and vibrate the bottom of the feeding hopper (2), and the first torsional spring (12) is used to drive the knocking rod (11) to reset.

3. The coal gangue crushing and filtering device according to claim 1, characterized in that, The coal gangue crushing and filtering device further comprises a fixing cylinder (9) arranged on the cavity top wall of the machine body (1) and around the driving shaft rod (4), the crushing assembly comprises a plurality of crushing rollers (14) arranged along the circumference of the driving shaft rod (4), the crushing rollers (14) are rotatably arranged with the driving shaft rod (4) and self-rotatably connected to the driving shaft rod (4) through a bearing, a gear (15) is fixedly arranged on any one of the crushing rollers (14), the bottom end surface of the fixing cylinder (9) is provided with a plurality of protrusions (16), the gear (15) is engaged with the plurality of protrusions (16) and the gear (15) is rollable along the circumference of the fixing cylinder (9).

4. The coal gangue crushing and filtering device according to claim 1, characterized in that, The first filtering net (5) comprises a first adapter plate and a first filter screen arranged around the first adapter plate, the vibration assembly comprises an adapter gear set (171), a transmission rod (172) and a cam member (173) used to form a vibration and knocking end, a support plate for supporting the transmission rod (172) is arranged below the first adapter plate, the transmission rod (172) horizontally extends below the first filter screen, the end of the transmission rod (172) is connected with the cam member (173), the driving shaft rod (4) is drivingly connected with the transmission rod (172) through the adapter gear set (171), so as to drive the cam member (173) to rotate and intermittently knock and vibrate the first filtering net (5).

5. The coal gangue crushing and filtering device according to claim 4, characterized in that, The transmission rods (172) and the cam members (173) are in multiple groups, the multiple groups of the transmission rods (172) and the cam members (173) are distributed along the circumference of the drive shaft rod (4), any one of the transmission rods (172) is in transmission connection with the drive shaft rod (4) through the adapter gear set (171), and multiple cam members (173) knock and vibrate different positions of the bottom of the first filter screen (5) along the circumference of the first adapter plate.

6. The coal gangue crushing and filtering device according to claim 1, characterized in that, The second filter screen (6) is slidably arranged in the cavity of the machine body (1) and is in limiting cooperation with the inner wall of the cavity of the machine body (1), the second filter screen (6) comprises a second adapter plate and a second filter screen surrounding the second adapter plate, the vibration assembly comprises a first protrusion (19) and a second protrusion (20), the second protrusion (20) is arranged below the second adapter plate, the first protrusion (19) is arranged at the bottom of the outer circumference of the drive shaft rod (4), the top of the first protrusion (19) forms a vibration knocking end and partially overlaps with the bottom of the second protrusion (20) in the circumference of the drive shaft rod (4), and the first protrusion (19) pushes the second protrusion (20) and the second filter screen (6) to intermittently ascend and descend as a whole in the process of rotating with the drive shaft rod (4).

7. The coal gangue crushing and filtering device according to claim 6, characterized in that, The first protrusions (19) and the second protrusions (20) are in multiple groups, multiple first protrusions (19) are distributed along the circumference of the second adapter plate and are arranged below the second adapter plate, and multiple second protrusions (20) are arranged at the outer circumference of the drive shaft rod (4) along the circumference of the drive shaft rod (4), the vibration assembly further comprises an elastic member (18) arranged between the drive shaft rod (4) and the second adapter plate, and the elastic member (18) is compressed when the first protrusion (19) pushes the second filter screen (6) to ascend as a whole.

8. The coal gangue crushing and filtering device according to claim 1, characterized in that, The beating rods (22) are in multiple groups, multiple beating rods (22) are distributed along the circumference of the drive shaft rod (4), the vibration assembly further comprises a second torsional spring (23), any one of the beating rods (22) is provided with the second torsional spring (23) corresponding to the hinged position of the mounting plate, and the second torsional spring (23) is used to drive the beating rod (22) to swing back to the original position.

9. The coal refuse crushing and filtering device of claim 1, wherein, The first filter screen (5) is in a mesh structure with a W-shaped cross section, the shape of the crushing assembly is matched with the shape of the first filter screen (5) and the bottom of the crushing assembly is in contact with the top surface of the first filter screen (5); the second filter screen (6) is in a mesh structure with an inverted V-shaped cross section, a discharge port (7) is formed in the side wall of the machine body (1), the cooperation position of the second filter screen (6) and the machine body (1) is located below the discharge port (7), and the cross-sectional shape of the cleaning assembly is matched with the cross-sectional shape of the second filter screen (6).

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