New material screening device and method

Abstract

The invention relates to the technical field of new material screening, and discloses a new material screening device and method.The new material screening device comprises a device frame, a storage bin, a screening bin and a collecting bin, a screening mechanism is arranged in the screening bin and comprises an inclined screen drum screen, and a fixed material baffle is fixedly connected to the upper portion in the inclined screen drum screen; a movable material blocking plate is movably connected to the inner lower portion of the inclined rotary screen, a crushing knife rest is rotationally connected to the side, close to the fixed material blocking plate, of the movable material blocking plate, and combined mechanisms are evenly arranged outside the screening bin and comprise knocking blocks, dust suction pipes and axially symmetric abutting blocks. According to the centrifugal screening device, the centrifugal screening function of new materials and the stacking and crushing function of coarse materials of the new materials can be achieved, and mixed materials of the stacked and crushed new materials can be pushed to the position close to the fixed material blocking plate through the movable material blocking plate so as to be subjected to secondary centrifugal screening; and meanwhile, the knocking anti-blocking function of the inclined rotary screen and the dust collection and falling function of the upper portion in the screening bin can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of new material screening, and in particular to a new material screening device and method. Background Art

[0002] New materials refer to newly developed or developing structural materials with excellent performance and functional materials with special properties. Structural materials mainly use their mechanical properties such as strength, toughness, hardness, elasticity, etc. Functional materials mainly use their electrical, optical, acoustic, magnetic, thermal and other functions and physical effects. In the preparation process of new materials, it is often necessary to screen the new materials produced to control the particle size of the raw materials to ensure the production quality and production efficiency of the new materials.

[0003] After searching, the Chinese invention patent with publication number CN110154265A discloses an energy-saving grinding disc fine grinding device for PVC new material processing, including a base, a crushing box, a material dividing device, a driving motor and a screening slot. The material dividing device is provided on the left side of the top of the crushing box, and the upper part of the crushing box is provided with a preliminary crushing chamber. The crushing box is also horizontally welded with a limit slide bar, and the screening slot is slidably installed on the limit slide bar. Compared with the prior art, the Chinese invention patent with publication number CN110154265A can speed up the screening speed of PVC new material powder in the screening slot and avoid the situation where the PVC new material powder blocks the mesh.

[0004] However, in the process of screening through the screening slot, the new material fine materials with uniform particle size obtained by screening can be collected uniformly, but the new material coarse materials intercepted by screening need to be taken out manually for crushing and re-screening operations, and the manual material taking and subsequent crushing and re-screening operations will undoubtedly reduce the screening efficiency of the device; and the horizontally moving screening slot is easy to be blocked and affect the screening effect of the device, and the dust generated in the screening process is easy to fly and affect the working environment. Therefore, a new material screening device and method are needed that can crush and re-screen the new material to improve the screening efficiency, prevent blockage to improve the screening effect, and reduce dust to optimize the working environment. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that manual material collection and subsequent crushing and re-screening operations will undoubtedly reduce the screening efficiency of the device, the horizontally moving screening slot is easily blocked and affects the screening effect of the device, and the dust generated during the screening process is easy to fly and affect the working environment, and a new material screening device and method are proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: The new material screening device comprises a device frame, a storage bin fixedly connected to the inside of the device frame, a screening bin and a collecting bin movably placed inside the device frame, the bottom of the storage bin is fixedly connected with a feed pipe extending to the inside of the screening bin, the bottom of the screening bin is fixedly connected with a discharge pipe extending to the top of the collecting bin, a screening mechanism for screening new materials is arranged inside the screening bin, the screening mechanism comprises an inclined screen drum rotatably connected to the inside of the screening bin, a fixed baffle plate is fixedly connected to the inner upper part of the inclined screen drum, a movable baffle plate is movably connected to the inner lower part of the inclined screen drum, a crushing tool holder is rotatably connected to the movable baffle plate on one side of the movable baffle plate close to the fixed baffle plate, a rotating member connected to the crushing tool holder is arranged inside the inclined screen drum, and a pulling member is arranged on the outer side of the movable baffle plate; The outside of the screening bin is evenly provided with a combined mechanism for preventing blockage and reducing dust, and the combined mechanism includes a knocking block arranged on the top outside the inclined screen drum screen, a dust suction pipe arranged on the top outside the screening bin, and an abutment block axially symmetrically fixedly connected to the outside of the inclined screen drum screen, and the abutment block and the outer side of the knocking block are both provided with abutment inclined surfaces.

[0007] The above technical solution further includes: An electromagnetic switch valve is provided at the outer middle part of the feed pipe, and a touch switch connected to the electromagnetic switch valve and abutting against the movable baffle plate is provided at the inner lower part of the screening bin; when the movable baffle plate abuts against the touch switch, the electromagnetic switch valve is in an open state, so that the new material inside the storage bin enters the inclined screen drum screen through the feed pipe, and when the movable baffle plate is moved away from the touch switch, the electromagnetic switch valve is in a closed state to stop feeding, thereby preventing the inclined screen drum screen from continuing to feed and affecting the secondary screening of the new material mixture.

[0008] The feed pipe is fixedly connected to the fixed baffle plate, a fixed rod group is fixedly connected between the fixed baffle plate and the screening bin, the movable baffle plate is slidably connected to the outside of the fixed rod group, and the outer ring of the movable baffle plate is fixedly connected to an annular brush plate for cleaning the inner wall of the inclined screen drum screen; when the movable baffle plate moves in the direction close to the fixed baffle plate, the crushed new material mixture accumulated at the bottom of the inclined screen drum screen can be pushed to a position close to the fixed baffle plate for secondary screening, and at the same time, it can drive the annular brush plate to clean the inner wall of the inclined screen drum screen to prevent the inclined screen drum screen from being blocked.

[0009] The rotating member comprises an outer cross rotating rod rotatably connected to the inside of the screening bin, the middle parts of the fixed baffle plate and the movable baffle plate are provided with a through hole A for allowing the outer cross rotating rod to pass through, the outer movable sleeve of the outer cross rotating rod is provided with an inner cross rotating sleeve, and the crushing tool holder is rotatably connected to the movable baffle plate through the inner cross rotating sleeve; The rotating member also includes an inner gear ring symmetrically rotatably connected to the inside of the screening bin, the inner gear ring symmetrically fixedly connected to the two ends of the inclined screen drum screen respectively, and the two ends of the outer cross rotating rod are fixedly connected to a sun gear, the outer side of the sun gear is meshed with a planetary gear set meshed with the inner side of the inner gear ring, and the planetary gear set is rotatably connected to the inside of the screening bin; The rotating member also includes a driving motor A installed outside the screening bin, the output end of the driving motor A rotates and extends to the inside of the screening bin and is fixedly connected to the end of the outer cross rotating rod; when the driving motor A is started, the new material fine material can be screened and the new material coarse material can be crushed; When the driving motor A is started, it can drive the outer cross rotating rod to rotate. The rotation of the outer cross rotating rod drives the inclined screen drum screen to rotate in the opposite direction through the sun gear, the planetary gear set and the inner gear ring. The reverse rotating inclined screen drum screen drives the new material inside it for centrifugal screening. At the same time, the outer cross rotating rod can drive the crushing tool holder to rotate through the inner cross rotating sleeve. The rotating crushing tool holder can crush the new material coarse material accumulated on the side of the movable baffle plate.

[0010] The pulling member includes a pulling rope symmetrically fixedly connected to the outside of the movable material baffle plate, a fixed pulley group symmetrically arranged on the outside of the screening bin, and a winding wheel symmetrically rotatably connected to the inside of the device frame. The outside of the fixed material baffle plate is symmetrically provided with a through hole B extending to the outside of the screening bin. One end of the pulling rope away from the movable material baffle plate passes through the through hole B, bypasses the fixed pulley group and is wound around the outside of the winding wheel. The symmetrical winding wheel is rotatably connected to the inside of the device frame through an upper rotating shaft, and an upper meshing gear is fixedly connected to the middle of the upper rotating shaft. The pulling member further comprises a driving motor B installed inside the device frame, the output end of the driving motor B is fixedly connected to a lower rotating shaft rotatably connected to the inner wall of the device frame, and a lower meshing gear is arranged in the middle of the lower rotating shaft; A driving member is provided between the lower rotating shaft and the lower meshing gear, and the driving member includes a driving disk fixedly connected to the outside of the lower rotating shaft and a driving groove axially symmetrically arranged on the inner side of the lower meshing gear, and a built-in groove is axially symmetrically arranged on the outer side of the driving disk, and a driving block that can enter the driving groove is slidably connected inside the built-in groove, and a return spring is fixedly connected between the built-in groove and the driving block; when the driving motor B is started, the winding of the pulling rope can be realized, so that the movable material baffle plate pushes the new material mixture accumulated on its side to a position close to the fixed material baffle plate; When the driving motor B starts to drive the lower rotating shaft and the driving disk to rotate, the axially symmetrical driving block is acted upon by the centrifugal force and enters the driving groove, so that the lower meshing gear rotates counterclockwise and drives the upper meshing gear to rotate clockwise, thereby realizing the winding of the pulling rope.

[0011] A timed start switch connected to the drive motor A is installed on the outside of the screening bin, and a transparent observation window close to the movable baffle plate and the crushing tool holder is also provided on the outside of the screening bin; the timed start switch can start the drive motor B to rotate for a preset time, and the amount of new material mixture accumulated on the side of the movable baffle plate can be observed through the transparent observation window.

[0012] The combined mechanism also includes a U-shaped air pressure bin fixedly connected to the outside of the screening bin, a piston block is arranged inside one end of the U-shaped air pressure bin, a force storage spring is fixedly connected between the piston block and the U-shaped air pressure bin, a piston rod is fixedly connected between the piston block and the knocking block, the other end of the U-shaped air pressure bin is fixedly connected to the dust suction pipe, an upper deflection valve plate and an outer deflection valve plate are respectively arranged inside one end of the U-shaped air pressure bin that is close to the dust suction pipe, an end of the dust suction pipe away from the U-shaped air pressure bin passes through the device frame and extends to the inside of the water tank, and the water tank is fixedly connected to the back of the device frame; When the outward rotating inclined screen drum drives the abutment block to rotate, the abutment block can drive the knocking block to shrink to the inside of the U-shaped air pressure chamber through the abutment inclined surface. The contraction of the knocking block causes the outer deflection valve plate to deflect outward to achieve dust discharge. When the knocking block is reset, it knocks on the inclined screen drum screen to knock off the raw materials blocking its inner and outer walls and causes the upper deflection valve plate to deflect upward to achieve dust inhalation.

[0013] The new material screening method adopts the above-mentioned new material screening device, comprising the following steps: S1. Initial start of the device: Start the driving motor A to rotate the outer cross rotating rod, so that the inclined screen drum screen rotates to prepare for the screening of new materials, and at the same time, the crushing knife frame rotates in the opposite direction to prepare for the crushing of new coarse materials; S2, device feeding: adding new materials into the storage bin, so that the new materials inside the storage bin can enter the interior of the inclined screen drum screen through the feed pipe; S3, screening and crushing: The new material entering the inclined screen drum is centrifugally screened under its drive, and the fine new material after screening enters the collection bin, and the coarse new material intercepted by screening is accumulated on the side of the movable baffle plate and crushed by the rotating crushing knife frame; S4. Knocking and dust collection: The rotating inclined screen drum screen can drive the knocking block to move repeatedly through the axially symmetrical abutment block. The knocking block moves upward to make the outer deflection valve plate deflect outward to achieve dust discharge. The knocking block resets downward to knock the inclined screen drum screen and make the upper deflection valve plate deflect upward to achieve dust suction. S5, crushing and returning materials: the driving motor B is turned off after the starting time is reached, and the continuously rotating crushing knife holder can drive the movable baffle plate to push the new material mixed material accumulated on its side to a position close to the fixed baffle plate while continuously crushing; S6. Secondary screening: The reverse rotating inclined screen drum screen performs secondary centrifugal screening on the new material mixture pushed close to the fixed baffle.

[0014] The present invention has the following beneficial effects: 1. In the present invention, by starting the driving motor A, the incoming new material can be gradually centrifugally screened toward the bottom driven by the inclined screen drum screen, and the new material fine material after screening enters the interior of the screening bin and enters the interior of the collecting bin through the discharge pipe, and the new material coarse material intercepted by the screening is accumulated on the side of the movable baffle plate and is crushed by the rotating crushing tool holder, that is, the centrifugal screening of the new material and the accumulation and crushing of the new material coarse material can be achieved, and the new material mixture after accumulation and crushing can be pushed to a position close to the fixed baffle plate through the movable baffle plate for secondary centrifugal screening. The present invention integrates the functions of screening, crushing and secondary screening, thereby improving the screening efficiency of the device.

[0015] 2. In the process of starting the driving motor A to realize the centrifugal screening of new materials and the accumulation and crushing of new material coarse materials, the present invention can drive the knocking block to move repeatedly through the axially symmetrical abutment block, and the upward movement of the knocking block will cause the outer deflection valve plate to deflect outward to realize the discharge of dust. The knocking block will reset downward and knock the inclined screen drum screen and cause the upper deflection valve plate to deflect upward to realize the inhalation of dust. The present invention integrates the functions of screening, anti-blocking, crushing, dust reduction and secondary screening. While improving the screening efficiency of the device, it can reduce dust to optimize the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front structure of the new material screening device proposed by the present invention; Figure 2 This is a schematic diagram of the back structure of the new material screening device proposed by the present invention; Figure 3 This is a first front cross-sectional structural schematic diagram of the new material screening device proposed by the present invention; Figure 4 This is a second front cross-sectional structural schematic diagram of the new material screening device proposed by the present invention; Figure 5 for Figure 4A schematic diagram of the structure enlargement in the middle; Figure 6 It is a schematic diagram of the side section structure of the screening bin in the present invention; Figure 7 for Figure 6 A magnified schematic diagram of the structure at B in the middle; Figure 8 It is a schematic diagram of the front cross-section structure of the screening bin in the present invention; Fig. 9 It is a schematic diagram of the front cross-section structure of the inclined screen drum screen in the present invention; Fig.10 It is a schematic diagram of the side cross-section structure of the inclined screen drum screen in the present invention; Fig.11 It is a schematic diagram of the front cross-section structure of the movable material baffle plate in the present invention; Fig.12 This is a flow chart of the new material screening method proposed in the present invention.

[0017] In the figure: 1, device frame; 2, storage bin; 3, screening bin; 4, collecting bin; 5, feed pipe; 6, discharge pipe; 7, screening mechanism; 70, inclined screen drum screen; 71, fixed baffle plate; 72, movable baffle plate; 73, crushing tool holder; 74, rotating member; 740, outer cross rotating rod; 741, through hole A; 742, inner cross rotating sleeve; 743, inner gear ring; 744, sun gear; 745, planetary gear set; 746, driving motor A; 75, pulling member; 750, pulling rope; 751, fixed pulley set; 752, winding wheel; 753, through hole B; 754, upper rotating shaft; 755, upper meshing gear; 756, driving motor A Motor B; 757, lower rotating shaft; 758, lower meshing gear; 759, driving member; 7590, driving plate; 7591, driving groove; 7592, built-in groove; 7593, driving block; 7594, reset spring; 76, fixed rod group; 77, annular brush plate; 8, combined mechanism; 80, knocking block; 81, dust suction pipe; 82, U-shaped air pressure chamber; 83, piston block; 84, storage spring; 85, piston rod; 86, upper deflection valve plate; 87, outer deflection valve plate; 88, abutment block; 89, abutment slope; 9, electromagnetic switch valve; 10, touch switch; 11, timed start switch; 12, transparent observation window; 13, water tank. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1 like Figure 1-Figure 6 and Figure 8-Figure 11 As shown, the new material screening device proposed in the present invention includes a device frame 1, a storage bin 2 fixedly connected to the inside of the device frame 1, a screening bin 3 and a collecting bin 4 movably placed inside the device frame 1, the bottom of the storage bin 2 is fixedly connected with a feed pipe 5 extending to the inside of the screening bin 3, the feed pipe 5 is fixedly connected with a fixed baffle plate 71, an electromagnetic switch valve 9 is arranged at the outer middle part of the feed pipe 5, and a touch switch 10 connected to the electromagnetic switch valve 9 and abutting against the movable baffle plate 72 is arranged at the inner lower part of the screening bin 3, when the movable baffle plate 72 abuts against the touch switch 10, the electromagnetic switch valve 9 is in an open state, so that the new material inside the storage bin 2 enters the inside of the inclined screen drum screen 70 through the feed pipe 5, and is moved away from the touch switch by the movable baffle plate 72. When the switch 10 is closed, the electromagnetic switch valve 9 is in a closed state to stop feeding, preventing the inclined screen drum screen 70 from continuing to feed and affecting the secondary screening of the new material mixture. The bottom of the screening bin 3 is fixedly connected to a discharge pipe 6 extending to the top of the collecting bin 4. The new material fines screened by the inclined screen drum screen 70 enter the interior of the collecting bin 4 through the discharge pipe 6. The outside of the screening bin 3 is equipped with a timed start switch 11 connected to the drive motor B756. The timed start switch 11 can start the drive motor B756 to rotate for a preset time. The outside of the screening bin 3 is also provided with a transparent observation window 12 close to the movable baffle plate 72 and the crushing tool holder 73. The amount of new material mixture accumulated on the side of the movable baffle plate 72 can be observed through the transparent observation window 12. The interior of the screening bin 3 is provided with a screening mechanism 7 for screening new materials, the screening mechanism 7 comprises an inclined screen drum screen 70 rotatably connected to the interior of the screening bin 3, a fixed material baffle plate 71 is fixedly connected to the inner upper part of the inclined screen drum screen 70, a movable material baffle plate 72 is movably connected to the inner lower part of the inclined screen drum screen 70, a fixed rod group 76 is fixedly connected between the fixed material baffle plate 71 and the screening bin 3, the movable material baffle plate 72 is slidably connected to the outside of the fixed rod group 76, an annular brush plate 77 for cleaning the inner wall of the inclined screen drum screen 70 is fixedly connected to the outer ring of the movable material baffle plate 72, and the movable baffle plate 72 is fixedly connected to the outer ring of the movable material baffle plate 72. When the material plate 72 moves in the direction close to the fixed material baffle plate 71, the crushed new material mixture accumulated at the bottom of the inclined screen drum 70 can be pushed to a position close to the fixed material baffle plate 71 for secondary screening, and at the same time, the annular brush plate 77 can be driven to clean the inner wall of the inclined screen drum 70 to prevent the inclined screen drum 70 from being blocked. The movable material baffle plate 72 is rotatably connected to a crushing knife frame 73 on one side close to the fixed material baffle plate 71. The interior of the inclined screen drum 70 is provided with a rotating member 74 connected to the crushing knife frame 73, and the outer side of the movable material baffle plate 72 is provided with a pulling member 75. The rotating member 74 includes an outer cross rotating rod 740 rotatably connected to the inside of the screening bin 3, and the middle parts of the fixed baffle plate 71 and the movable baffle plate 72 are provided with a through hole A741 for allowing the outer cross rotating rod 740 to pass through. The outer movable sleeve of the outer cross rotating rod 740 is provided with an inner cross rotating sleeve 742. The crushing tool holder 73 is rotatably connected to the movable baffle plate 72 through the inner cross rotating sleeve 742. The outer cross rotating rod 740 can drive the crushing tool holder 73 to rotate through the inner cross rotating sleeve 742. The rotation of the crushing tool holder 73 can crush the new material coarse material accumulated on the side of the movable baffle plate 72. The rotating member 74 also includes a driving motor A746 installed outside the screening bin 3, and the output end of the driving motor A746 rotates and extends to the screening bin 3 and is fixedly connected to the end of the outer cross rotating rod 740, the rotating member 74 also includes an inner gear ring 743 symmetrically rotatably connected to the inside of the screening bin 3, the symmetrical inner gear ring 743 is respectively fixedly connected to the two ends of the inclined screen drum screen 70, and both ends of the outer cross rotating rod 740 are fixedly connected with a sun gear 744, the outer part of the sun gear 744 is meshed with a planetary gear set 745 meshed with the inner side of the inner gear ring 743, and the planetary gear set 745 is rotatably connected to the inside of the screening bin 3. The rotation of the outer cross rotating rod 740 drives the inclined screen drum screen 70 to rotate in the opposite direction through the sun gear 744, the planetary gear set 745 and the inner gear ring 743, and the reversely rotating inclined screen drum screen 70 drives the new material inside it to be centrifugally screened; The pulling member 75 includes a pulling rope 750 symmetrically fixedly connected to the outside of the movable material baffle plate 72, a fixed pulley group 751 symmetrically arranged on the outside of the screening bin 3, and a winding wheel 752 symmetrically rotatably connected to the inside of the device frame 1. The outside of the fixed material baffle plate 71 is symmetrically provided with a through hole B753 extending to the outside of the screening bin 3. The end of the pulling rope 750 away from the movable material baffle plate 72 passes through the through hole B753, bypasses the fixed pulley group 751 and is wound around the outside of the winding wheel 752. The symmetrical winding wheel 752 is rotatably connected to the inside of the device frame 1 through an upper rotating shaft 754. An upper meshing gear 755 is fixedly connected to the middle part of the upper rotating shaft 754. The upper meshing gear 755 drives the symmetrical winding wheel 752 to rotate along the upper rotating shaft 754. The pulling rope 750 can be wound by clockwise rotation, so that the movable baffle plate 72 pushes the new material mixture accumulated on its side to a position close to the fixed baffle plate 71. The pulling member 75 also includes a driving motor B756 installed inside the device frame 1. The output end of the driving motor B756 is fixedly connected to a lower rotating shaft 757 that is rotatably connected to the inner wall of the device frame 1. A lower meshing gear 758 is arranged in the middle of the lower rotating shaft 757. A driving member 759 is arranged between the lower rotating shaft 757 and the lower meshing gear 758. When the driving motor B756 is started to drive the lower rotating shaft 757 to rotate, the lower rotating shaft 757 can drive the lower meshing gear 758 to rotate counterclockwise through the driving member 759 so that the upper meshing gear 755 rotates clockwise. The driving member 759 includes a driving plate 7590 fixedly connected to the outside of the lower rotating shaft 757 and a driving groove 7591 axially symmetrically opened on the inner side of the lower meshing gear 758. The outer side of the driving plate 7590 is axially symmetrically provided with a built-in groove 7592. The inner part of the built-in groove 7592 is slidably connected with a driving block 7593 that can enter the driving groove 7591. A reset spring 7594 is fixedly connected between the built-in groove 7592 and the driving block 7593. The rotation of the lower rotating shaft 757 causes the driving plate 7590 to rotate, so that the axially symmetrical driving block 7593 enters the driving groove 7591 under the centrifugal force, thereby causing the lower meshing gear 758 to rotate counterclockwise following the driving plate 7590.

[0020] The working principle of this embodiment is as follows: in the initial state, the driving motor A746 needs to be started to drive the outer cross rotating rod 740 to rotate. The rotation of the outer cross rotating rod 740 drives the sun gears 744 at both ends to rotate. The rotation of the sun gears 744 at both ends drives the inner gear ring 743 to rotate in the opposite direction through the planetary gear set 745, so that the inclined screen drum screen 70 rotates in the opposite direction to wait for the screening of new materials. At the same time, the outer cross rotating rod 740 drives the crushing tool holder 73 to rotate through the inner cross rotating sleeve 742 to wait for the crushing of new coarse materials. Then, new materials are added to the interior of the storage bin 2. The new materials in the storage bin 2 enter the interior of the inclined screen drum screen 70 through the feed pipe 5. The new materials entering the interior of the inclined screen drum screen 70 are gradually centrifugally screened toward the bottom under the drive of the inclined screen drum screen 70. The fine materials of the new materials after screening enter the interior of the screening bin 3 and enter the interior of the collecting bin 4 through the discharge pipe 6. The coarse new materials intercepted by screening are accumulated on the side of the movable baffle plate 72 and crushed by the rotating crushing tool holder 73. After the screening time reaches the preset time, the timing start switch 11 starts the driving motor B756 for the preset time, so that the lower rotating shaft 757 and the driving plate 7590 rotate counterclockwise. The counterclockwise rotating driving plate 7590 causes the axially symmetrical driving block 7593 to be subjected to the centrifugal force and enter the driving groove 7591 (in this process, the axially symmetrical reset spring 7594 is stretched), so that the lower meshing gear 758 can rotate counterclockwise with the driving plate 7590. The counterclockwise rotating lower meshing gear 758 The upper meshing gear 755, the upper rotating shaft 754 and the symmetrical winding wheel 752 are driven to rotate clockwise, so that the winding wheel 752 winds the pulling rope 750, and the wound pulling rope 750 pulls the movable baffle plate 72 to disengage from the touch switch 10 and pushes the new material mixture accumulated on its side to a position close to the fixed baffle plate 71 (in this process, the crushing knife frame 73 still rotates to crush the new material mixture), and the movable baffle plate 72 disengages from the touch switch 10 so that the electromagnetic switch valve 9 is closed to stop the feeding inside the inclined screen drum screen 70; When the driving motor B756 is turned off after the starting time reaches the preset time, the axisymmetric driving block 7593 enters the interior of the built-in groove 7592 through the stretched reset spring 7594, that is, the rotation of the lower meshing gear 758 is not affected by the driving member 759, and the continuously rotating crushing knife frame 73 can drive the movable material baffle plate 72 to gradually reset to the bottom end under the action of centrifugal force while performing continuous crushing (in this process, the movable material baffle plate 72 pulls the symmetrical pulling rope 750, so that the symmetrical winding wheel 752 rotates counterclockwise to release the pulling rope 750), and the reverse rotating inclined screen drum screen 70 can perform secondary centrifugal screening on the crushed new material mixture; After the movable baffle plate 72 is reset to its initial state and abuts against the contact switch 10, the electromagnetic switch valve 9 is opened to continue the feeding into the inclined screen drum 70, and then the screening of new materials, the crushing of new material coarse materials and the secondary screening of new material mixtures are repeated, thereby obtaining new material fine materials with uniform particle size.

[0021] The main difference between this embodiment and the prior art is that by starting the driving motor A746, the incoming new material can be gradually centrifugally screened toward the bottom driven by the inclined screen drum screen 70, and the new material fine material after screening enters the interior of the screening bin 3 and enters the interior of the collecting bin 4 through the discharge pipe 6, and the new material coarse material intercepted by the screening is accumulated on the side of the movable baffle plate 72 and crushed by the rotating crushing tool holder 73, that is, the centrifugal screening of the new material and the accumulation and crushing of the new material coarse material can be realized, and the new material mixture after accumulation and crushing can be pushed to a position close to the fixed baffle plate 71 through the movable baffle plate 72 for secondary centrifugal screening. This embodiment integrates the functions of screening, crushing and secondary screening, thereby improving the screening efficiency of the device.

[0022] Embodiment 2 like Figure 1-Figure 4 and Figure 6-Figure 8 As shown, based on the first embodiment, a combination mechanism 8 for preventing dust from blocking is evenly arranged on the outside of the screening bin 3, and the combination mechanism 8 includes a knocking block 80 arranged on the top of the outer side of the inclined screen drum screen 70, a dust suction pipe 81 arranged on the top of the outer side of the screening bin 3, and an abutment block 88 axially symmetrically fixedly connected to the outside of the inclined screen drum screen 70, and the outer sides of the abutment block 88 and the knocking block 80 are both provided with abutment inclined surfaces 89. The knocking block 80 knocks the inclined screen drum 70 to knock off the raw materials blocked on its inner and outer walls, and the dust suction pipe 81 can absorb the dust flying to the upper part of the screening bin 3. When the inclined screen drum 70 rotates outward and drives the abutment block 88 to rotate, the abutment block 88 can drive the knocking block 80 to retract into the inside of the U-shaped air pressure bin 82 through the abutment inclined surface 89; The combined mechanism 8 also includes a U-shaped air pressure chamber 82 fixedly connected to the outside of the screening chamber 3, a piston block 83 is arranged inside one end of the U-shaped air pressure chamber 82, a force storage spring 84 is fixedly connected between the piston block 83 and the U-shaped air pressure chamber 82, and a piston rod 85 is fixedly connected between the piston block 83 and the knocking block 80. When the knocking block 80 contracts, the piston block 83 is driven by the piston rod 85 to move upward to squeeze the force storage spring 84, so as to squeeze the dust entering the U-shaped air pressure chamber 82 into the inside of the dust suction pipe 81, and the knocking block 80 is reset to knock the inclined screen drum screen 70 to knock off the raw materials blocked on its inner and outer walls, and the U-shaped air pressure chamber 82 is opened. The other end of the bin 82 is fixedly connected to the dust suction pipe 81, and an upper deflection valve plate 86 and an outer deflection valve plate 87 are respectively provided inside the end where the U-shaped air pressure bin 82 and the dust suction pipe 81 are close to each other. When the piston block 83 moves upward, the outer deflection valve plate 87 is deflected outward to discharge dust, and when the piston block 83 moves downward, the upper deflection valve plate 86 is deflected upward to inhale dust. The end of the dust suction pipe 81 away from the U-shaped air pressure bin 82 passes through the device frame 1 and extends to the inside of the water tank 13. The water tank 13 is fixedly connected to the back of the device frame 1, and the dust entering the water tank 13 forms a suspension.

[0023] The working principle of this embodiment is as follows: in the process of starting the driving motor A746 to realize the centrifugal screening of new materials and the accumulation and crushing of new material coarse materials, the outward rotating inclined screen drum screen 70 can drive the external axially symmetrical abutment block 88 to rotate, and the rotation of the abutment block 88 can drive the knocking block 80 to shrink to the inside of the U-shaped air pressure bin 82 through the abutment inclined surface 89. The contraction of the knocking block 80 drives the piston block 83 to move upward through the piston rod 85 and squeeze the storage spring 84. The upward movement of the piston block 83 will squeeze the dust inside the U-shaped air pressure bin 82 and open the outer deflection valve plate 87. The dust inside the U-shaped air pressure bin 82 is discharged into the water tank 13 through the dust suction pipe 81. When the abutment block 88 rotates to disengage from the knocking block 80, the squeezed force storage spring 84 drives the knocking block 80 to reset through the piston block 83 and the piston rod 85. The knocking block 80 resets and knocks the inclined screen drum 70 to knock off the raw materials blocked on its inner and outer walls. At the same time, the downward movement of the reset piston block 83 generates negative pressure inside the U-shaped air pressure bin 82 and opens the upper deflection valve plate 86, so that the dust flying to the upper part of the screening bin 3 is sucked into the U-shaped air pressure bin 82. When the abutment block 88 rotates to the point where it can drive the knocking block 80 to contract through the abutment inclined surface 89, it will continue to repeatedly knock on the inclined screen drum 70 to prevent blockage and to vacuum and reduce dust on the upper part of the screening bin 3, thereby preventing the inclined screen drum 70 from being blocked to improve the screening effect, and at the same time reducing the dust on the upper part of the screening bin 3 to optimize the working environment.

[0024] The main difference between this embodiment and the prior art is that: in the process of starting the driving motor A746 to realize the centrifugal screening of new materials and the stacking and crushing of new material coarse materials, the knocking block 80 can be driven to move repeatedly through the axially symmetrical abutment block 88, and the upward movement of the knocking block 80 will cause the outer deflection valve plate 87 to deflect outward to realize the discharge of dust. The knocking block 80 will reset downward and knock the inclined screen drum screen 70 and cause the upper deflection valve plate 86 to deflect upward to realize the suction of dust. This embodiment integrates the functions of screening, anti-blocking, crushing, dust reduction and secondary screening. While improving the screening efficiency of the device, it can reduce dust to optimize the working environment.

[0025] Embodiment 3 like Fig.12 As shown, based on the first and second embodiments, the new material screening method proposed by the present invention comprises the following steps: S1, initial start of the device: start the driving motor A746 to rotate the outer cross rotating rod 740, so that the inclined screen drum screen 70 rotates to prepare for the screening of new materials, and at the same time, the crushing tool holder 73 rotates in the opposite direction to prepare for the crushing of new coarse materials; S2, device feeding: adding new material to the interior of the storage bin 2, so that the new material inside the storage bin 2 enters the interior of the inclined screen drum 70 through the feed pipe 5; S3, screening and crushing: the new material entering the inclined screen drum 70 is centrifugally screened under its drive, and the fine new material after screening enters the inside of the collecting bin 4, and the coarse new material intercepted by screening is accumulated on the side of the movable baffle plate 72 and crushed by the rotating crushing knife frame 73; S4. Knocking and dust collection: The rotating inclined screen drum screen 70 for screening can drive the knocking block 80 to move repeatedly through the axially symmetrical abutment block 88. The knocking block 80 moves upward to make the outer deflection valve plate 87 deflect outward to discharge the dust. The knocking block 80 returns downward to knock the inclined screen drum screen 70 and make the upper deflection valve plate 86 deflect upward to inhale the dust. S5, crushing and returning materials: the driving motor B756 is turned off after the starting time is reached, and the continuously rotating crushing knife holder 73 can drive the movable baffle plate 72 to push the new material mixed material accumulated on its side to a position close to the fixed baffle plate 71 while continuously crushing; S6. Secondary screening: The reversely rotating inclined screen drum screen 70 performs secondary centrifugal screening on the new material mixture pushed to the vicinity of the fixed baffle plate 71 .

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new material screening device, comprising a device frame (1), a material storage bin (2) fixedly connected to the inside of the device frame (1), a screening bin (3), and a collecting bin (4) movably placed inside the device frame (1), characterized in that: The bottom of the storage bin (2) is fixedly connected to a feed pipe (5) extending to the inside of the screening bin (3); the bottom of the screening bin (3) is fixedly connected to a discharge pipe (6) extending to the top of the collecting bin (4); a screening mechanism (7) for screening new materials is arranged inside the screening bin (3); the screening mechanism (7) comprises an inclined screen drum (70) rotatably connected to the inside of the screening bin (3); a fixed baffle plate (71) is fixedly connected to the inner upper part of the inclined screen drum (70); a movable baffle plate (72) is movably connected to the inner lower part of the inclined screen drum (70); a crushing tool holder (73) is rotatably connected to the movable baffle plate (72) on a side of the movable baffle plate (72) close to the fixed baffle plate (71); a rotating member (74) connected to the crushing tool holder (73) is arranged inside the inclined screen drum (70); and a pulling member (75) is arranged on the outer side of the movable baffle plate (72); The outside of the screening bin (3) is evenly provided with a combination mechanism (8) for preventing dust from blocking, the combination mechanism (8) comprising a knocking block (80) arranged at the top of the outside of the inclined screen drum screen (70), a dust suction pipe (81) arranged at the top of the outside of the screening bin (3), and an abutment block (88) axially symmetrically fixedly connected to the outside of the inclined screen drum screen (70), and the outsides of the abutment block (88) and the knocking block (80) are both provided with abutment inclined surfaces (89).

2. The new material screening device according to claim 1 is characterized in that: An electromagnetic switch valve (9) is provided at the outer middle portion of the feed pipe (5), and a touch switch (10) connected to the electromagnetic switch valve (9) and abutting against the movable baffle plate (72) is provided at the inner lower portion of the screening bin (3).

3. The new material screening device according to claim 2 is characterized in that: The feed pipe (5) is fixedly connected to the fixed baffle plate (71); a fixed rod group (76) is fixedly connected between the fixed baffle plate (71) and the screening bin (3); the movable baffle plate (72) is slidably connected to the outside of the fixed rod group (76); and an annular brush plate (77) for cleaning the inner wall of the inclined drum screen (70) is fixedly connected to the outer ring of the movable baffle plate (72).

4. The new material screening device according to claim 3 is characterized in that: The rotating member (74) comprises an outer cross rotating rod (740) rotatably connected to the inside of the screening bin (3); a through hole A (741) for allowing the outer cross rotating rod (740) to pass through is provided in the middle of the fixed material baffle plate (71) and the movable material baffle plate (72); an outer movable sleeve of the outer cross rotating rod (740) is provided with an inner cross rotating sleeve (742); and the crushing tool holder (73) is rotatably connected to the movable material baffle plate (72) via the inner cross rotating sleeve (742); The rotating member (74) further comprises an inner gear ring (743) symmetrically rotatably connected to the interior of the screening bin (3); the inner gear ring (743) is symmetrically fixedly connected to the two ends of the inclined screen drum screen (70), respectively; both ends of the outer cross rotating rod (740) are fixedly connected to a sun gear (744); the outer portion of the sun gear (744) is meshedly connected to a planetary gear set (745) meshed with the inner side of the inner gear ring (743); the planetary gear set (745) is rotatably connected to the interior of the screening bin (3); The rotating member (74) further comprises a driving motor A (746) mounted outside the screening bin (3), wherein the output end of the driving motor A (746) rotates to extend into the interior of the screening bin (3) and is fixedly connected to the end of the outer cross rotating rod (740).

5. The new material screening device according to claim 4 is characterized in that: The pulling member (75) comprises a pulling rope (750) symmetrically fixedly connected to the outside of the movable material baffle plate (72), a fixed pulley group (751) symmetrically arranged outside the screening bin (3), and a winding wheel (752) symmetrically rotatably connected to the inside of the device frame (1); the outside of the fixed material baffle plate (71) is symmetrically provided with a through hole B (753) extending to the outside of the screening bin (3); one end of the pulling rope (750) away from the movable material baffle plate (72) passes through the through hole B (753), bypasses the fixed pulley group (751) and is wound around the outside of the winding wheel (752); the symmetrical winding wheel (752) is rotatably connected to the inside of the device frame (1) via an upper rotating shaft (754); the middle part of the upper rotating shaft (754) is fixedly connected to an upper meshing gear (755); The pulling member (75) further comprises a driving motor B (756) installed inside the device frame (1), the output end of the driving motor B (756) being fixedly connected to a lower rotating shaft (757) rotatably connected to the inner wall of the device frame (1), and a lower meshing gear (758) being provided in the middle of the lower rotating shaft (757); A driving member (759) is provided between the lower rotating shaft (757) and the lower meshing gear (758), and the driving member (759) comprises a driving plate (7590) fixedly connected to the outside of the lower rotating shaft (757) and a driving groove (7591) axially symmetrically arranged on the inner side of the lower meshing gear (758); an inner groove (7592) is axially symmetrically arranged on the outer side of the driving plate (7590); a driving block (7593) capable of entering the inner side of the driving groove (7591) is slidably connected to the inner side of the inner groove (7592); and a return spring (7594) is fixedly connected between the inner groove (7592) and the driving block (7593).

6. The new material screening device according to claim 5, characterized in that: A timed start switch (11) connected to the drive motor B (756) is installed outside the screening bin (3), and a transparent observation window (12) close to the movable material baffle plate (72) and the crushing blade holder (73) is also provided outside the screening bin (3).

7. The new material screening device according to claim 6, characterized in that: The combined mechanism (8) further comprises a U-shaped air pressure chamber (82) fixedly connected to the outside of the screening chamber (3); a piston block (83) is arranged inside one end of the U-shaped air pressure chamber (82); a force storage spring (84) is fixedly connected between the piston block (83) and the U-shaped air pressure chamber (82); a piston rod (85) is fixedly connected between the piston block (83) and the knocking block (80); the other end of the U-shaped air pressure chamber (82) is fixedly connected to the dust suction pipe (81); an upper deflection valve plate (86) and an outer deflection valve plate (87) are respectively arranged inside one end of the U-shaped air pressure chamber (82) and the dust suction pipe (81) close to each other; the end of the dust suction pipe (81) away from the U-shaped air pressure chamber (82) passes through the device frame (1) and extends to the inside of the water tank (13); the water tank (13) is fixedly connected to the back of the device frame (1).

8. A new material screening method, using the new material screening device according to claim 7, characterized in that: The following steps are involved: S1. Initial start of the device: start the driving motor A (746) to rotate the outer cross rotating rod (740), so that the inclined screen drum screen (70) rotates to prepare for the screening of new materials, and at the same time, the crushing knife frame (73) rotates in the opposite direction to prepare for the crushing of new coarse materials; S2, adding materials to the device: adding new materials to the interior of the storage bin (2), so that the new materials in the storage bin (2) enter the interior of the inclined screen drum screen (70) through the feed pipe (5); S3, screening and crushing: the new material entering the inclined screen drum (70) is centrifugally screened under the drive of the inclined screen drum, and the fine new material after screening enters the interior of the collecting bin (4), and the coarse new material intercepted by screening is accumulated on the side of the movable baffle plate (72) and crushed by the rotating crushing knife frame (73); S4, knocking and dust collection: the inclined screen drum screen (70) that rotates for screening can drive the knocking block (80) to move repeatedly through the axisymmetric abutment block (88), the knocking block (80) moves upward to cause the outer deflection valve plate (87) to deflect outward to achieve dust discharge, and the knocking block (80) returns downward to knock the inclined screen drum screen (70) and cause the upper deflection valve plate (86) to deflect upward to achieve dust suction; S5, crushing and returning materials: the driving motor B (756) is turned off after the starting time is reached, and the crushing knife frame (73) is continuously rotating, while continuously crushing, it can drive the movable baffle plate (72) to push the new material mixture accumulated on its side to a position close to the fixed baffle plate (71); S6, secondary screening: the inclined screen drum (70) rotating in the opposite direction performs secondary centrifugal screening on the new material mixture pushed close to the fixed baffle plate (71).

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