Crushing device and method for processing high-purity quartz sand

By designing the driving and pushing device in the quartz sand processing equipment, and using the drive shaft with opposite rotation directions to drive the filter plate inclination, the problem of particle accumulation during the crushing of quartz sand is solved, and the continuous and efficient filtration effect is achieved.

CN119281437AInactive Publication Date: 2025-01-10DONGHAI SILICON IND (JIANGSU) TECH CO LTD
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Patent Information

Application Number
CN202411768145.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-04
Publication Date
2025-01-10
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

During the crushing process of quartz sand, large particles that are not completely broken are easily accumulated on the filter plate, affecting the subsequent filtration effect, and not being discharged in time will affect the production process.

Method used

A crushing device for processing high-purity quartz sand is designed, including a crushing box, a filter device and a pushing device. The filtering device and a pushing device are driven by two drive shafts with opposite rotation directions to push the tilt of the filter plate to ensure that larger particles are timely Exhaust to avoid accumulation.

Benefits of technology

Through the cooperation of the driving device and the pushing device, the filter plate can be continuously tilted and leveled during the rotation period of the crushing roller, ensuring that the larger particles on the filter plate are discharged in time, maintaining the sustainability of the filtration effect, and avoiding particle accumulation and blockage.

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Abstract

The invention relates to the technical field of quartz sand processing, in particular to a crushing device for high-purity quartz sand processing and a method thereof. According to the technical scheme, the device comprises a crushing box body, and a crushing roller set, a filtering device and a pushing device are arranged in the crushing box body from top to bottom. The driving devices are arranged on the two driving shafts with opposite rotating directions, so that the filtering device and the pushing device can be driven by the driving devices to move back and forth in opposite directions, the filtering plate can be pushed by the pushing device to incline, accumulated large particles can be removed in time, and the filtering effect is improved. The U-shaped frame and the pushing frame are continuously overlapped and separated, the filter plate is continuously inclined and flat in the process, and the operation process is completely consistent with the rotation period of the crushing roller, so that the crushing roller rotates for a circle, the filter plate discharges materials once, and the problem of accumulation is avoided.
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Description

Technical Field

[0001] The invention relates to the technical field of quartz sand processing, and in particular to a crushing device and a method for processing high-purity quartz sand. Background Art

[0002] With the development of science and technology, high-purity quartz sand is widely used in semiconductor, photovoltaic and other industries due to its excellent physical and chemical properties. Quartz sand crushing is an important processing process, especially in the production of high-quality quartz sand materials.

[0003] After crushing, the quartz sand needs to be filtered. Only raw materials that meet the crushing requirements can be used. After filtering, larger particles that are not completely crushed will remain on the filter. If the larger particles are not discharged in time, it will affect the subsequent filtration effect. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the background technology and to provide a crushing device and method for processing high-purity quartz sand.

[0005] The technical solution of the present invention is: a crushing device and method for processing high-purity quartz sand, comprising a crushing box, in which a crushing roller group, a filtering device and a pushing device are respectively arranged from top to bottom; The crushing roller group consists of two crushing rollers rotating in opposite directions. Motors are fixed on both sides of the crushing box. A drive shaft for installing the crushing rollers is fixed on the output end of the motor. One end of the drive shaft extends outside the crushing box and is provided with a drive device. The filtering device comprises a U-shaped frame and a filtering plate, and mounting arms and side plates are fixed to the two sides of the U-shaped frame and the filtering plate, respectively. One end of the mounting arm is slidably mounted on the side plate, and the other end is rotatably mounted on the U-shaped frame. A ramp plate is installed at the bottom of the mounting arm. The pushing device comprises a pushing frame, and a pushing rod is fixed to one end of the pushing frame. The two driving devices are arranged in opposite directions, and are respectively used to push the U-shaped frame and the pushing frame to move back and forth, and the moving directions of the two are opposite. When the U-shaped frame and the pushing frame move, the pushing rod pushes the ramp plate to make the filter plate inclined.

[0006] Preferably, the driving device includes a movable plate fixed on one side of the U-shaped frame and the pushing frame, a driving disk fixed on the end of the driving shaft, and a bar frame located on one side of the driving disk, a gear plate is fixed on the movable plate, a driving rod passing through the top of the bar frame is fixed on the driving disk, a fan gear is fixed on the bottom of the bar frame, and the fan gear is meshed with the gear plate.

[0007] Preferably, a first shell and a second shell are fixed outside the crushing box, the end of the drive shaft is located in the second shell, the movable plate and the sector gear are both located in the first shell, a limit shaft is rotatably installed at the center axis of the sector gear, the limit shaft is fixedly installed in the first shell, the first shell is provided with a movable cavity, and the strip frame passes through the movable cavity and extends into the second shell.

[0008] Preferably, the driving device also includes an auxiliary plate fixed on the other side of the U-shaped frame and the pushing frame, the auxiliary plate and the crushing box are slidably connected, the two sides of the filtering device are respectively provided with a debris removal shell and a first movable shell fixed outside the crushing box, the two sides of the pushing device are provided with a second movable shell fixed outside the crushing box, a lower hopper is provided in the debris removal shell, and a feed hopper is provided on the top of the crushing box.

[0009] Preferably, the crushing box, the first shell, the debris removal shell and the first movable shell are interconnected, the second movable shell is interconnected with the crushing box, the movable plate penetrates the wall of the crushing box and can move in the first shell, the debris removal shell and the first movable shell, and it can also move in the second movable shell, and the movable plate and the first shell are slidably connected.

[0010] Preferably, the side plate is provided with an arc groove, one end of the mounting arm is slidably installed in the arc groove, the ramp plate is provided with a track, the push rod is provided with a push wheel adapted to the track, the push wheel is located in the track, and a brush cleaning frame is fixed to the other end of the push frame, and a brush cleaning roller contacting the filter plate is rotatably installed on the brush cleaning frame.

[0011] A method for using a crushing device for processing high-purity quartz sand comprises the following steps: S1: Start the motor to drive the crushing roller to rotate, and then input the raw materials from the feed hopper into the crushing box. The raw materials are crushed by the crushing roller and fall onto the filter plate. The filter plate filters the raw materials and filters out the raw materials that meet the crushing requirements. They will be discharged from the bottom of the crushing box, while the raw materials that fail to meet the crushing requirements will form larger particles and remain on the filter plate; S2: When the motor is started, the driving device will work, the driving shaft will drive the driving disk to rotate, so that the driving rod pushes the bar frame and the fan gear to swing by relying on the limit of the limit shaft, and the meshing gear plate of the fan gear drives the moving plate to move back and forth through swinging, so that the two moving plates will respectively drive the U-shaped frame and the pushing frame to move back and forth, and the two move in opposite directions; S3: The U-shaped frame and the push frame move back and forth and in opposite directions, so that the push rod drives the push wheel to move in the track, and the shape of the ramp plate causes the push rod to push up the mounting arm during the movement, and when it moves to the end, the filter plate is completely tilted in the impurity discharge housing, so that the larger particles on the filter plate are poured into the impurity discharge housing for discharge; S4: The larger particles discharged into the impurity discharge shell will be discharged from the lower hopper and collected. The collected larger particles will be put back into the crushing box for crushing.

[0012] Compared with the existing technology, the beneficial effects of the present invention are: by setting up the filtering device, the driving device and the pushing device, and by setting up the driving device on two driving shafts with opposite rotation directions, the driving device can drive the filtering device and the pushing device to move back and forth and in opposite directions, so that the pushing device can push the filter plate to tilt, so that it can remove the accumulated larger particles in time, and the U-shaped frame and the pushing frame will continue to overlap and move away. In this process, the filter plate will continue to tilt and lie flat, and the operation process will be completely consistent with the rotation cycle of the crushing roller, which makes the crushing roller rotate one circle, and then the filter plate will discharge once, thus ensuring that the problem of accumulation will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the filtering device of the present invention; Figure 3 It is a structural schematic diagram of the driving device of the present invention; Figure 4 An exploded view of the filter device of the present invention; Figure 5 It is a structural schematic diagram of the pushing device of the present invention; Figure 6 It is a structural schematic diagram of the track of the present invention; Figure 7 It is a schematic diagram of the installation position of the filtering device of the present invention.

[0014] Figure numerals: 1, crushing box; 2, feed hopper; 3, crushing roller; 4, motor; 5, drive shaft; 6, filter device; 7, drive device; 8, pushing device; 9, first shell; 10, moving chamber; 11, second shell; 61, U-shaped frame; 62, filter plate; 63, mounting arm; 64, side plate; 65, arc groove; 66, ramp plate; 67, track; 71, moving plate; 72, drive disk; 73, bar frame; 74, drive rod; 75, sector gear; 76, gear plate; 77, limit shaft; 78, auxiliary plate; 81, pushing frame; 82, pushing rod; 83, pushing wheel; 84, brush rack; 85, brush roller; 100, debris removal shell; 200, first moving shell; 300, second moving shell. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] See attached Figure 1-Figure 7 A crushing device and method for processing high-purity quartz sand, comprising a crushing box 1, in which a crushing roller group, a filtering device 6 and a pushing device 8 are respectively arranged from top to bottom; The crushing roller group is composed of two crushing rollers 3 rotating in opposite directions. Motors 4 are fixed on both sides of the crushing box 1. A driving shaft 5 for installing the crushing rollers 3 is fixed at the output end of the motor 4. One end of the driving shaft 5 extends outside the crushing box 1 and is provided with a driving device 7. The filter device 6 includes a U-shaped frame 61 and a filter plate 62. A mounting arm 63 and a side plate 64 are fixed to both sides of the U-shaped frame 61 and the filter plate 62, respectively. One end of the mounting arm 63 is slidably mounted on the side plate 64, and the other end is rotatably mounted on the U-shaped frame 61. A ramp plate 66 is installed at the bottom of the mounting arm 63. The pushing device 8 includes a pushing frame 81. A pushing rod 82 is fixed to one end of the pushing frame 81. The two driving devices 7 are set in opposite directions. The two driving devices 7 are used to push the U-shaped frame 61 and the pushing frame 81 to move back and forth, and the moving directions of the two are opposite. When the U-shaped frame 61 and the pushing frame 81 move, the pushing rod 82 pushes the ramp plate 66 to make the filter plate 62 inclined.

[0017] The raw material is crushed by the crushing roller group and then filtered by the filter plate 62. The larger particles after filtering will fall on the filter plate 62. The U-shaped frame 61 and the pushing frame 81 will move in the opposite direction through the driving device 7. Therefore, during the movement, the pushing rod 82 can push the filter plate 62 to tilt, so that the larger particles on the filter plate 62 can be discharged smoothly. The operation of the filtering device 6 and the driving device 7 is carried out according to the operation cycle of the crushing roller group, so that larger particles can be discharged continuously, avoiding the accumulation of larger particles on the filter plate 62, and continuously ensuring the filtering effect.

[0018] Specifically, the driving device 7 includes a movable plate 71 fixed on one side of the U-shaped frame 61 and the pushing frame 81, a driving disk 72 fixed on the end of the driving shaft 5, and a bar frame 73 located on one side of the driving disk 72. A gear plate 76 is fixed on the movable plate 71, a driving rod 74 passing through the top of the bar frame 73 is fixed on the driving disk 72, a fan gear 75 is fixed to the bottom of the bar frame 73, and the fan gear 75 is meshed with the gear plate 76. A first shell 9 and a second shell 11 are fixed outside the crushing box 1, the end of the driving shaft 5 is located in the second shell 11, the movable plate 71 and the fan gear 75 are both located in the first shell 9, a limit shaft 77 is rotatably installed at the central axis of the fan gear 75, and the limit shaft 77 is fixedly installed in the first shell 9. The first shell 9 is provided with a movable cavity 10, and the bar frame 73 passes through the movable cavity 10 and extends to the second shell 11.

[0019] The rotation of the motor 4 will cause the driving disk 72 to rotate, so that the driving disk 72 can push the driving rod 74 and the fan gear 75 through the bar frame 73 to make a swinging motion relying on the limit of the limit shaft 77, so that the fan gear 75 can mesh and drive the moving plate 71 to move back and forth, so that the moving plate 71 can drive the U-shaped frame 61 and the pushing frame 81 to move.

[0020] In this embodiment, the driving device 7 further includes an auxiliary plate 78 fixed to the other side of the U-shaped frame 61 and the pushing frame 81, the auxiliary plate 78 is slidably connected to the crushing box 1, the two sides of the filtering device 6 are respectively provided with a debris removal shell 100 and a first movable shell 200 fixed outside the crushing box 1, the two sides of the pushing device 8 are provided with a second movable shell 300 fixed outside the crushing box 1, the debris removal shell 100 is provided with a lower hopper, and the top of the crushing box 1 is provided with a feed hopper 2; The auxiliary plate 78 ensures the stability of the movement of the U-shaped frame 61 and the pushing frame 81, and when the U-shaped frame 61 moves into the impurity discharge shell 100, the filter plate 62 will be completely tilted, so that larger particles will be discharged into the impurity discharge shell 100 and then discharged from the lifting hopper.

[0021] Furthermore, the crushing box 1, the first shell 9, the debris removal shell 100 and the first movable shell 200 are mutually connected, the second movable shell 300 is connected with the crushing box 1, the movable plate 71 penetrates the wall of the crushing box 1 and can move in the first shell 9, the debris removal shell 100 and the first movable shell 200, and can also move in the second movable shell 300, and the movable plate 71 is slidably connected with the first shell 9; In this way, the stability of the movement of the U-shaped frame 61 and the pushing frame 81 can be ensured. In addition, when the moving plate 71 moves, it will penetrate the wall of the crushing box 1, but there will not be a large gap between it and the wall of the crushing box 1, so that the raw materials will not go out from there.

[0022] It should also be noted that the side plate 64 is provided with an arc groove 65, one end of the mounting arm 63 is slidably installed in the arc groove 65, the ramp plate 66 is provided with a track 67, the push rod 82 is provided with a push wheel 83 adapted to the track 67, the push wheel 83 is located in the track 67, and the other end of the push frame 81 is fixed with a brush frame 84, and the brush frame 84 is rotatably installed with a brush roller 85 that contacts the filter plate 62.

[0023] In this solution, since the two driving shafts 5 rotate in opposite directions, the driving devices 7 respectively provided therein will drive the U-shaped frame 61 and the pushing frame 81 to move in opposite directions, so that when the U-shaped frame 61 and the pushing frame 81 move, the pushing wheel 83 will continue to move in the track 67, and due to the shape of the ramp plate 66, the pushing rod 82 pushes up the ramp plate 66 during the movement, so that one end of the mounting arm 63 is pushed up and moves in the arc groove 65, and the other end of the mounting arm 63 will rotate on the U-shaped frame 61; In addition, when the U-shaped frame 61 and the pushing frame 81 move, the cleaning roller 85 will move along the filter plate 62, so that the filter plate 62 can be cleaned, so that the raw materials stuck in the filter holes of the filter plate 62 are removed, preventing blockage and ensuring continuous filtering effect.

[0024] Finally, it should be noted that because the gear plate 76 will drive the movable plate 71 to move back and forth, the U-shaped frame 61 and the pushing frame 81 will also move back and forth, so that the two will constantly overlap and move away. During this process, the filter plate 62 will continue to tilt and lie flat, and the arc groove 65 will also continuously clean the bottom of the filter plate 62, and the operation process will be completely consistent with the rotation cycle of the crushing roller 3.

[0025] A method for using a crushing device for processing high-purity quartz sand comprises the following steps: S1: Start the motor 4 to drive the crushing roller 3 to rotate, and then input the raw material from the feed hopper 2 into the crushing box 1. The raw material is crushed by the crushing roller 3 and falls onto the filter plate 62. The filter plate 62 filters the raw material and filters out the raw material that meets the crushing requirements. The raw material will be discharged from the bottom of the crushing box 1, while the raw material that fails to meet the crushing requirements will form larger particles and remain on the filter plate 62. S2: When the motor 4 is started, the driving device 7 will work, the driving shaft 5 will drive the driving disk 72 to rotate, so that the driving rod 74 pushes the bar frame 73 and the sector gear 75 to swing by relying on the limit of the limit shaft 77, and the meshing gear plate 76 of the sector gear 75 drives the moving plate 71 to move back and forth through the swing, so that the two moving plates 71 will respectively drive the U-shaped frame 61 and the pushing frame 81 to move back and forth, and the two move in opposite directions; S3: The U-shaped frame 61 and the push frame 81 move back and forth and in opposite directions, so that the push rod 82 drives the push wheel 83 to move in the track 67, and the shape of the ramp plate 66 causes the push rod 82 to push up the mounting arm 63 during the movement, and when it moves to the end, the filter plate 62 is completely tilted in the impurity discharge housing 100, so that the larger particles on the filter plate 62 are poured into the impurity discharge housing 100 for discharge; S4: The larger particles discharged into the impurity discharge shell 100 will be discharged from the lower hopper and collected, and the collected larger particles will be put back into the crushing box 1 for crushing.

[0026] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A crushing device for high-purity quartz sand processing, characterized in that: It comprises a crushing box (1), wherein a crushing roller group, a filtering device (6) and a pushing device (8) are respectively arranged in the crushing box (1) from top to bottom; The crushing roller group is composed of two crushing rollers (3) rotating in opposite directions. Motors (4) are fixed on both sides of the crushing box (1). A drive shaft (5) for mounting the crushing rollers (3) is fixed to the output end of the motor (4). One end of the drive shaft (5) extends outside the crushing box (1) and is provided with a drive device (7). The filtering device (6) comprises a U-shaped frame (61) and a filtering plate (62); a mounting arm (63) and a side plate (64) are fixed to both sides of the U-shaped frame (61) and the filtering plate (62); one end of the mounting arm (63) is slidably mounted on the side plate (64), and the other end is rotatably mounted on the U-shaped frame (61); a ramp plate (66) is mounted at the bottom of the mounting arm (63); and the pushing device (8) comprises a pushing frame (81); a pushing rod (82) is fixed to one end of the pushing frame (81); The two driving devices (7) are arranged in opposite directions. The two driving devices (7) are respectively used to push the U-shaped frame (61) and the pushing frame (81) to move back and forth, and the two moving directions are opposite. When the U-shaped frame (61) and the pushing frame (81) move, the pushing rod (82) pushes the ramp plate (66) to make the filter plate (62) inclined.

2. A crushing device for processing high-purity quartz sand according to claim 1, characterized in that: The driving device (7) comprises a moving plate (71) fixed to one side of the U-shaped frame (61) and the pushing frame (81), a driving disk (72) fixed to the end of the driving shaft (5), and a bar frame (73) located on one side of the driving disk (72); a gear plate (76) is fixed to the moving plate (71); a driving rod (74) passing through the top of the bar frame (73) is fixed to the driving disk (72); a fan gear (75) is fixed to the bottom of the bar frame (73); and the fan gear (75) and the gear plate (76) are meshed.

3. A crushing device for processing high-purity quartz sand according to claim 2, characterized in that: A first shell (9) and a second shell (11) are fixed outside the crushing box (1), the end of the drive shaft (5) is located in the second shell (11), the movable plate (71) and the sector gear (75) are both located in the first shell (9), a limit shaft (77) is rotatably mounted at the center axis of the sector gear (75), the limit shaft (77) is fixedly mounted in the first shell (9), the first shell (9) is provided with a movable cavity (10), and the strip frame (73) passes through the movable cavity (10) and extends into the second shell (11).

4. A crushing device for processing high-purity quartz sand according to claim 3, characterized in that: The driving device (7) further comprises an auxiliary plate (78) fixed to the other side of the U-shaped frame (61) and the pushing frame (81), the auxiliary plate (78) being slidably connected to the crushing box (1), the two sides of the filtering device (6) being respectively provided with a debris removal shell (100) and a first movable shell (200) fixed outside the crushing box (1), the two sides of the pushing device (8) being provided with a second movable shell (300) fixed outside the crushing box (1), the debris removal shell (100) being provided with a lower hopper, and the top of the crushing box (1) being provided with a feed hopper (2).

5. A crushing device for processing high-purity quartz sand according to claim 4, characterized in that: The crushing box (1), the first shell (9), the debris removal shell (100) and the first movable shell (200) are interconnected, the second movable shell (300) is interconnected with the crushing box (1), the movable plate (71) penetrates the wall of the crushing box (1) and can move within the first shell (9), the debris removal shell (100) and the first movable shell (200), and can also move within the second movable shell (300), and the movable plate (71) and the first shell (9) are slidably connected.

6. A crushing device for processing high-purity quartz sand according to claim 1, characterized in that: The side plate (64) is provided with an arc groove (65), one end of the mounting arm (63) is slidably mounted in the arc groove (65), the ramp plate (66) is provided with a track (67), the push rod (82) is provided with a push wheel (83) adapted to the track (67), the push wheel (83) is located in the track (67), and a brush cleaning frame (84) is fixed at the other end of the push frame (81), and a brush cleaning roller (85) contacting the filter plate (62) is rotatably mounted on the brush cleaning frame (84).

7. A method for using a crushing device for processing high-purity quartz sand, using the crushing device for processing high-purity quartz sand according to any one of claims 1 to 6, characterized in that: The steps include: S1: starting the motor (4) to drive the crushing roller (3) to rotate, and then feeding the raw material from the feed hopper (2) into the crushing box (1). The raw material is crushed by the crushing roller (3) and falls onto the filter plate (62). The filter plate (62) filters the raw material, and filters out the raw material that meets the crushing requirements and is discharged from the bottom of the crushing box (1). The raw material that fails to meet the crushing requirements forms larger particles and remains on the filter plate (62); S2: When the motor (4) is started, the driving device (7) is operated, the driving shaft (5) drives the driving disk (72) to rotate, so that the driving rod (74) drives the bar frame (73) and the fan gear (75) to swing by relying on the limit of the limit shaft (77), and the meshing gear plate (76) of the fan gear (75) drives the moving plate (71) to move back and forth through the swing, so that the two moving plates (71) respectively drive the U-shaped frame (61) and the pushing frame (81) to move back and forth, and the two move in opposite directions; S3: The U-shaped frame (61) and the push frame (81) move back and forth and in opposite directions, so that the push rod (82) drives the push wheel (83) to move in the track (67), and the shape of the ramp plate (66) causes the push rod (82) to push up the mounting arm (63) during the movement, and when it moves to the end, the filter plate (62) is completely tilted in the impurity discharge housing (100), so that the larger particles on the filter plate (62) are poured into the impurity discharge housing (100) and discharged; S4: The larger particles discharged into the impurity discharge shell (100) are discharged from the lower hopper and collected. The collected larger particles are then put back into the crushing box (1) for crushing.

Citation Information

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  • Filtering device for gravel processing

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