A concrete screening device

Abstract

The application discloses a concrete screening device and relates to the field of concrete screening.The concrete screening device comprises a base, a screening box and a feeding cylinder, the screening box is connected to the top of the base, a conveying assembly is arranged in the screening box, the conveying assembly comprises an annular conveying table, two mounting plates are respectively connected to the two sides of the screening box, a guide plate extending along the direction of the conveying table is connected to the screening box, a feeding port is arranged in the feeding cylinder, a feeding hopper is connected to the feeding port, a vibrating motor is connected to the feeding cylinder, a mixing assembly is further arranged in the feeding cylinder, a plurality of filter screens are arranged in the feeding cylinder along the feeding direction of the feeding port, the mesh size of the plurality of filter screens gradually increases, the plurality of filter screens are jointly provided with an arc-shaped plate, and the arc-shaped plate and the mixing assembly are jointly connected with a driving assembly.The mixed concrete of multiple particle sizes is separated by the mixing assembly, the separated concrete is screened on the filter screens, and then the screened concrete is discharged at the other side of the sealing door under the action of the conveying assembly, so that the screened concrete can be conveniently output.

Description

Technical Field

[0001] This invention belongs to the technical field, and in particular relates to a concrete screening device. Background Technology

[0002] Material screening technology separates materials with larger particle sizes from those with smaller particle sizes through the filtering effect of the mesh openings in the screen. When it is necessary to classify and separate materials according to their particle size or to screen materials multiple times to ensure screening quality, a multi-stage screening mechanism is required.

[0003] For multi-stage screening mechanisms, the existing technology has the problem that when some smaller particles are surrounded by larger particles, they are often unable to be distinguished. Especially when different particle sizes are mixed, simple vibration and shaking cannot completely separate the materials, and the separated particles cannot be transported during feeding. Based on this, the present invention designs a concrete screening device. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art and to propose a concrete screening device.

[0005] A concrete screening device includes a base and a screening box. The screening box is connected to the top of the base. A transport component is provided in the screening box. The transport component includes an annular transport platform for transporting concrete of various specifications outwards. Mounting plates are connected to both sides of the screening box. A guide plate extending along the direction of the transport platform is connected to the screening box and restricts the material from leaving the transport component through the guide plate.

[0006] The feeding cylinder has a feed inlet connected to a feed hopper. Concrete enters the feeding cylinder through the feed hopper and is conveyed along the axial direction of the feeding cylinder. The feeding cylinder is connected to a vibrating motor and also contains a mixing assembly. The feeding cylinder contains multiple filter screens arranged along the feed direction of the feed inlet, with the mesh size of the multiple filter screens increasing sequentially. The multiple filter screens share an arc-shaped plate, which is rotatably connected to the bottom of the feeding cylinder. The arc-shaped plate and the mixing assembly are connected to a drive assembly, which drives the mixing assembly to rotate while simultaneously causing the arc-shaped plate to swing.

[0007] In the above-mentioned device, the mixing assembly includes a central roller, which is coaxially arranged with the feed cylinder. The central roller has an air inlet channel along its central axis, and an exhaust hole is provided on the opposite side of the air inlet channel.

[0008] In the above apparatus, the two groups of exhaust vents are all arranged obliquely, the inclination direction of each group of the exhaust vents is opposite, each of the exhaust vents is connected with an air injection pipe arranged along the inclination direction thereof, a side of the air intake channel away from the feed inlet is connected with a pressure pipe, and the pressure pipe is connected to an external pressurization device.

[0009] In the above apparatus, the driving assembly comprises a connecting plate, the connecting plate is fixed on the side surface of an arc-shaped plate, a connecting shaft is inserted into the connecting plate, one end of the connecting shaft is connected to a central roller, the other end of the connecting shaft is connected to a driving motor, an adjusting shaft is fixedly arranged on the end surface of the arc-shaped plate, an arc-shaped groove is formed in the mounting plate, the adjusting shaft is inserted into the arc-shaped groove and drives the arc-shaped plate to swing in cooperation in the arc-shaped groove, the driving assembly further comprises a missing gear connected with the connecting shaft, two sides of the missing gear are respectively connected with a rack plate, each rack plate is inserted with a guide rod in a penetrating manner and the rack plate is slidably connected to the guide rod, the two guide rods are jointly connected with a fixed seat, the fixed seat is fixedly connected with the driving motor, the two rack plates are jointly connected with an adjusting gear, the adjusting gear is rotatably connected with the connecting shaft, the connecting shaft and the adjusting shaft are jointly connected with a connecting plate, and the connecting plate rotates around the connecting shaft.

[0010] In the above apparatus, a plurality of layered parts are arranged in the screening box, the plurality of layered parts divide the screening box into a plurality of independent material storage spaces, the connection part of each material storage space comprises a layered net matched with the upper filter screen, the position of each layered net is directly opposite to the position of the filter screen, and the layered part closest to the driving motor is arranged as a sealing structure.

[0011] In the above apparatus, the transport assembly further comprises an annular conveyor belt, the bottom of the layered part is fixed to the top of the conveyor belt, the conveyor belt is provided with a chute at the bottom of each layered net, a sliding block fixedly connected with the layered part is slidably connected in the chute, the sliding block is connected with a hydraulic cylinder, the hydraulic cylinder is arranged below the conveyor belt, the sliding block is arranged as a convex structure and comprises an upper sliding block and a lower sliding block which can be split from each other, the upper sliding block and the lower sliding block attract each other magnetically, two sides of the upper sliding block are connected with the side wall of the chute through springs, a sealing plate is fixedly arranged on each of two sides of the upper sliding block, the sealing plate is in sealing sliding connection with the side wall of the chute and movably seals the part of the chute above the spring.

[0012] In the above apparatus, a side of the guide plate away from the screening box is provided with a plurality of discharge outlets, each discharge outlet is provided with a sealing door, an auxiliary pushing block is arranged on the opposite side of the sealing door, and the auxiliary pushing block is slidably connected to the conveyor belt through the cooperation of a hydraulic system.

[0013] A concrete screening method, adopting the above apparatus, comprising the following steps:

[0014] S1: The concrete mixed with particles of various sizes is conveyed into the feed cylinder through the feed inlet, and then the vibration motor is started, so that the material gradually moves in the axial direction of the feed cylinder;

[0015] S2: Start the drive motor to make the arc plate swing in the feed cylinder, thereby slowing down the speed of the material moving axially in the feed cylinder by swinging;

[0016] S3: After all the material has entered the screening box, multiple hydraulic cylinders on the conveyor belt are activated, causing multiple layered meshes to move closer to each other, separating concrete particles of various sizes into a storage space composed of multiple layered meshes.

[0017] S4: Start the circular conveyor belt, which drives the materials in multiple storage spaces into the state that cooperates with multiple sealed doors;

[0018] S5: Activate the auxiliary pusher to unload materials from multiple storage spaces. Attached Figure Description

[0019] Figure 1 This is a first-view structural schematic diagram of a concrete screening device proposed in this invention.

[0020] Figure 2 This is a structural schematic diagram from a second perspective of a concrete screening device proposed in this invention.

[0021] Figure 3 This is a schematic diagram of the internal structure of the feed cylinder in a concrete screening device proposed in this invention.

[0022] Figure 4 This is a schematic diagram of the mixing component in a concrete screening device proposed in this invention.

[0023] Figure 5 This is a schematic diagram of the drive component in a concrete screening device proposed in this invention.

[0024] Figure 6 This is a schematic diagram of the transport component in a concrete screening device proposed in this invention.

[0025] Figure 7 yes Figure 6 An enlarged schematic diagram of part A in the middle.

[0026] Figure 8 This is a structural diagram of the slider and sealing plate.

[0027] In the diagram: 1. Base, 2. Screening box, 21. Layering section, 22. Layering screen, 3. Feed cylinder, 4. Feed hopper, 5. Mixing assembly, 51. Center roller, 52. Air inlet channel, 53. Exhaust hole, 54. Pressurizing pipe, 55. Jet pipe, 6. Filter screen, 7. Arc plate, 8. Drive assembly, 81. Connecting plate, 82. Connecting shaft, 83. Drive motor, 84. Adjusting shaft, 85. Arc groove, 86. Gear, 87. Rack plate, 88. Guide rod, 89. Fixed seat, 810. Adjusting gear, 9. Transport assembly, 91. Transport platform, 92. Conveyor belt, 93. Slide chute, 94. Slider, 941. Upper slider, 942. Lower slider, 95. Hydraulic cylinder, 96. Spring, 97. Sealing plate, 10. Mounting plate, 11. Guide plate, 12. Discharge port, 13. Sealing door, 14. Auxiliary push block. Detailed Implementation

[0028] Reference Figures 1-8 A concrete screening device includes a base 1 and a screening box 2. The screening box 2 is connected to the top of the base 1. A transport component 9 is provided in the screening box 2. The transport component 9 includes an annular transport platform 91 for transporting concrete of various specifications outwards. Mounting plates 10 are connected to both sides of the screening box 2. A guide plate 11 extending along the direction of the transport platform 91 is connected to the screening box 2 and the guide plate 11 restricts the material from leaving the transport component 9.

[0029] The feed cylinder 3 has a feed inlet connected to a feed hopper 4. Concrete enters the feed cylinder 3 through the feed hopper and is conveyed along the axial direction of the feed cylinder 3. The feed cylinder 3 is connected to a vibrating motor and also has a mixing assembly 5. The feed cylinder 3 has multiple filter screens 6 arranged along the feed direction of the feed inlet 4. The mesh size of the multiple filter screens 6 increases sequentially. The multiple filter screens 6 are connected to an arc plate 7, which is rotatably connected to the bottom of the feed cylinder 3. The arc plate 7 and the mixing assembly 5 are connected to a drive assembly 8. The drive assembly 8 drives the mixing assembly 5 to rotate while simultaneously causing the arc plate 7 to swing.

[0030] The mixing assembly 5 includes a central roller 51, which is coaxially arranged with the feed cylinder 3. The central roller 51 has an air inlet channel 52 along its central axis, and an exhaust port 53 is provided on the opposite side of the air inlet channel 52. Both sets of exhaust ports 53 are inclined, and the inclination directions of each set of exhaust ports 53 are opposite. Each exhaust port 53 is connected to a jet pipe 55 arranged along its inclination direction. A pressurizing pipe 54 is connected to the side of the air inlet channel 52 away from the feed port 4. The pressurizing pipe 54 is connected to an external pressurizing device.

[0031] The drive assembly 8 includes a connecting plate 81, which is fixed to the side of the arc-shaped plate 7. A connecting shaft 82 is inserted into the connecting plate 81. One end of the connecting shaft 82 is connected to the central roller 51, and the other end is connected to the drive motor 83. An adjusting shaft 84 is fixedly provided on the end face of the arc-shaped plate 7. An arc-shaped groove 85 is provided on the mounting plate 10. The adjusting shaft 84 is inserted into the arc-shaped groove 85 and drives the arc-shaped plate 7 to swing within the arc-shaped groove 85. The drive assembly 8 also includes a missing gear 86 connected to the connecting shaft 82. The two sides of the missing gear 86 are respectively connected to... There is a rack plate 87, and each rack plate 87 is through which a guide rod 88 is inserted and the rack plate 87 is slidably connected to the guide rod 88. The two guide rods 88 are connected to a fixed seat 89, and the fixed seat 89 is fixedly connected to the drive motor 83. The two rack plates 87 are connected to an adjusting gear 810, and the adjusting gear 810 is rotatably connected to a connecting shaft 82. The connecting shaft 82 and the adjusting shaft 84 are connected to a connecting plate 811, and the connecting plate 811 is rotatably connected to the connecting shaft 82. The connecting plate 811 drives the adjusting shaft 84 to swing.

[0032] The screening box 2 is provided with multiple layered sections 21, which divide the screening box 2 into multiple independent storage spaces. Each storage space has a layered mesh 22 that matches the filter screen 6 above at the connection point. The position of each layered mesh 22 is directly opposite the position of the filter screen 6. The layered section 21 closest to the drive motor 83 is set as a sealed structure.

[0033] The conveying assembly 9 further comprises an annular conveyor belt 92, the bottom of the layered part 21 is fixed to the top of the conveyor belt 92, a sliding groove 93 is opened at the bottom of each layered screen 22 on the conveyor belt 92, a sliding block 94 fixedly connected with the layered part 21 is slidably connected in the sliding groove 93, the sliding block 94 is connected with a hydraulic cylinder 95, the hydraulic cylinder 95 is arranged below the conveyor belt 92, the sliding block 94 is arranged in a "convex" structure and comprises an upper sliding block 941 and a lower sliding block 942 which can be separated from each other, the upper sliding block 941 and the lower sliding block 942 attract each other magnetically, both sides of the upper sliding block 941 are connected with the side wall of the sliding groove 93 through springs 96, the lower sliding block 942 is connected with the output shaft of the hydraulic cylinder 95, so that when the two are combined, the lower sliding block 942 can drive the upper sliding block 941 to move, thereby causing the layered screen 22 to reciprocate, which can redistribute the materials in a plurality of material storage spaces, wherein the material storage space near the feed inlet should actually accommodate the part with the smallest material particle size, and the particle size of materials in the material storage space increases gradually along the moving direction of the conveyor belt 92. In this way, when the plurality of layered screens 22 reciprocate, the smaller particle size part contained in the material storage space on the larger particle size side will move to the smaller particle size side, thereby avoiding the problem that when materials pass through the filter screen 6 into different material storage spaces, the smaller particle size part is wrapped inside the larger particle size materials, resulting in low material discrimination after overall screening;

[0034] A sealing plate 97 is fixedly arranged on both sides of the upper sliding block 941, the sealing plate 97 is in sealing sliding connection with the side wall of the sliding groove 93 and movably seals the part of the sliding groove 93 above the spring 96, which can prevent materials from falling out of the sliding groove 93 and ensure that materials are always on the conveyor belt 92. A plurality of discharge ports 12 are opened on the side of the guide plate 11 away from the screening box 2, each discharge port 12 is provided with a sealing door 13, an auxiliary pushing block 14 is arranged on the opposite side of the sealing door 13, and the auxiliary pushing block 14 is slidingly connected to the conveyor belt 92 through cooperation with a hydraulic system.

[0035] The present invention also discloses a method for screening concrete using the above apparatus, comprising the following steps:

[0036] S1: Convey the concrete mixed with multi-size particles into the feeding cylinder 3 through the feeding port, then start the vibration motor to make the materials gradually move along the axial direction of the feeding cylinder 3;

[0037] S2: Start the driving motor 83 to make the arc-shaped plate 7 swing in the feeding cylinder 3, so as to slow down the axial moving speed of the materials in the feeding cylinder 3 through swinging;

[0038] S3: After all the material has entered the screening box 2, the multiple hydraulic cylinders 95 on the conveyor belt 92 are started, causing the multiple layered meshes 22 to move closer to each other, and the concrete particles of various sizes are divided into the storage space composed of multiple layered meshes 22.

[0039] S4: Start the circular conveyor belt 92, which drives the materials in the multiple storage spaces into the state that cooperates with the multiple sealing doors 13 respectively;

[0040] S5: Start the auxiliary pusher block 14 to unload materials from multiple storage spaces.

[0041] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative and not exhaustive. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A concrete screening device, characterized in that, include: Base (1); Screening box (2), the screening box (2) is connected to the top of the base (1), the screening box (2) is provided with a transport component (9), the transport component (9) includes an annular transport platform (91) for transporting concrete of various specifications outwards respectively, the two sides of the screening box (2) are respectively connected with mounting plates (10), the screening box (2) is connected with a guide plate (11) extending along the direction of the transport platform (91) and the guide plate (11) restricts the material from leaving the transport component (9), the guide plate (11) has multiple discharge ports (12) on the side away from the screening box (2), each discharge port (12) is provided with a sealing door (13), and the opposite side of the sealing door (13) is provided with an auxiliary push block (14). Feeding cylinder (3), the feeding cylinder (3) is provided with a feeding port, the feeding port is connected to a feeding hopper (4), the concrete enters the feeding cylinder (3) through the feeding hopper and is conveyed along the axial direction of the feeding cylinder (3) as the feeding direction, the feeding cylinder (3) is connected to a vibrating motor, the feeding cylinder (3) is also provided with a mixing component (5), the feeding cylinder (3) is provided with multiple filter screens (6) arranged along the feeding direction of the feeding port, the screen holes of the multiple filter screens (6) are successively enlarged, the multiple filter screens (6) are jointly provided with an arc plate (7), the arc plate (7) is rotatably connected to the bottom of the feeding cylinder (3), the arc plate (7) and the mixing component (5) are jointly connected with a driving component (8) including a driving motor (83), which is used to drive the mixing component (5) to rotate while driving the arc plate (7) to swing; The screening box (2) is provided with multiple layered sections (21), which divide the screening box (2) into multiple independent storage spaces. Each storage space has a layered mesh (22) that matches the upper filter screen (6) at the connection point. The position of each layered mesh (22) is directly opposite to the position of the filter screen (6). The layered section (21) closest to the drive motor (83) is set as a sealed structure. The conveying assembly (9) further comprises an annular conveying belt (92), the bottom of the layered section (21) is fixed on the top of the conveying belt (92), the conveying belt (92) is provided with a chute (93) at the bottom of each layered screen (22), a sliding block (94) fixedly connected to the layered section (21) is slidably connected in the chute (93), the sliding block (94) is connected with a hydraulic cylinder (95), the hydraulic cylinder (95) is arranged below the conveying belt (92), the sliding block (94) is of a convex-shaped structure and comprises an upper sliding block (941) and a lower sliding block (942) which can be separated from each other, the upper sliding block (941) and the lower sliding block (942) attract each other magnetically, two sides of the upper sliding block (941) are connected with the side wall of the chute (93) through springs (96), a sealing plate (97) is fixedly arranged on each of two sides of the upper sliding block (941), the sealing plate (97) is in sealed sliding connection with the side wall of the chute (93) and movably seals a part of the chute (93) above the spring (96).

2. The concrete screening device according to claim 1, characterized in that, The material mixing assembly (5) comprises a central roller (51), the central roller (51) is arranged coaxially with the feeding cylinder (3), the central roller (51) is provided with an air intake channel (52) along its central axis, and an exhaust hole (53) is provided on the opposite side of the air intake channel (52).

3. The concrete screening device according to claim 2, characterized in that, Two groups of the exhaust holes (53) are arranged obliquely, the inclination direction of each group of the exhaust holes (53) is opposite, each of the exhaust holes (53) is connected with an air injection pipe (55) arranged along the inclination direction thereof, a side of the air intake channel (52) away from the feeding port (4) is connected with a pressure pipe (54), and the pressure pipe (54) is connected to an external pressure device.

4. The concrete screening device according to claim 1, characterized in that, The drive assembly (8) includes a connecting plate (81) fixed to the side of the arc plate (7), a connecting shaft (82) inserted in the connecting plate (81), one end of the connecting shaft (82) connected to the center roller (51), and the other end of the connecting shaft (82) connected to the drive motor (83). An adjusting shaft (84) is fixedly provided on the end face of the arc plate (7). The mounting plate (10) has an arc groove (85). The adjusting shaft (84) is inserted into the arc groove (85) and drives the arc plate (7) to swing in the arc groove (85). The drive assembly (8) also includes a missing gear (8) connected to the connecting shaft (82). 6) A rack plate (87) is connected to each side of the missing gear (86). Each rack plate (87) is inserted through a guide rod (88) and the rack plate (87) is slidably connected to the guide rod (88). The two guide rods (88) are connected to a fixed seat (89). The fixed seat (89) is fixedly connected to the drive motor (83). The two rack plates (87) are connected to an adjusting gear (810). The adjusting gear (810) is rotatably connected to the connecting shaft (82). The connecting shaft (82) and the adjusting shaft (84) are connected to a connecting plate (811). The connecting plate (811) rotates around the connecting shaft (82).

5. The concrete screening device according to claim 2, characterized in that, The auxiliary pusher (14) is slidably connected to the conveyor belt (92) through a hydraulic system.

6. A method for screening concrete, characterized in that, The apparatus of any one of claims 1 to 5 comprises the following steps: S1: The concrete mixed with particles of various sizes is conveyed into the feed cylinder (3) through the feed inlet, and then the vibration motor is started so that the material gradually moves in the axial direction of the feed cylinder (3); S2: Start the drive motor (83) to make the arc plate (7) swing in the feed cylinder (3) to slow down the speed of the material moving axially in the feed cylinder (3); S3: After all the material has entered the screening box (2), start multiple hydraulic cylinders (93) on the conveyor belt (92) to make multiple layered meshes (22) move closer to each other, and divide the concrete of multiple sizes into a storage space composed of multiple layered meshes (22); S4: Start the circular conveyor belt (92) to drive the materials in multiple storage spaces into the state that cooperates with multiple sealing doors (13); S5: Activate the auxiliary push block (14) on the opposite side of the sealing door (13) to unload the material from multiple storage spaces.

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