Concrete screening device

Abstract

The invention discloses a concrete screening device, and relates to the field of concrete screening, the concrete screening device comprises a machine base, a screening box and a feeding cylinder, the screening box is connected to the top of the machine base, a conveying assembly is arranged in the screening box and comprises an annular conveying table, and the two sides of the screening box are connected with mounting plates correspondingly; the screening box is connected with a guide plate extending in the direction of the conveying table, a feeding port is formed in the feeding cylinder, the feeding port is connected with a feeding hopper, the feeding cylinder is connected with a vibration motor, a material mixing assembly is further arranged in the feeding cylinder, and a plurality of filter screens arranged in the feeding direction of the feeding port are arranged in the feeding cylinder. Sieve pores of the multiple filter screens are sequentially increased, the multiple filter screens are jointly provided with an arc-shaped plate, and the arc-shaped plate and the material mixing assembly are jointly connected with a driving assembly. According to the concrete screening device, mixed concrete with multiple particle sizes is separated by arranging the mixing assembly, acts on the filter screen to be screened and enters the sealing door on the other side to be discharged under the action of the conveying assembly, and the screened concrete is conveniently output separately.

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-mentioned device, the two groups of the exhaust holes are both inclined, and the inclination directions of each group of the exhaust holes are opposite. Each of the exhaust holes is connected to a jet pipe arranged along its inclination direction. The side of the intake passage far from the feed port is connected to a pressurization pipe, and the pressurization pipe is connected to an external pressurization device.

[0009] In the above-mentioned device, the driving component includes a connecting plate fixed to the side surface of the arc-shaped plate. A connecting shaft is inserted into the connecting plate. One end of the connecting shaft is connected to the central roller, and the other end of the connecting shaft is connected to the driving motor. An adjusting shaft is fixedly arranged on the end surface of the arc-shaped plate. The mounting plate is provided with an arc-shaped groove. 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 component further includes a deficient gear connected to the connecting shaft. A rack plate is connected to each side of the deficient gear. Each rack plate is penetrated and provided with a guiding rod, and the rack plate is slidably connected to the guiding rod. The two guiding rods are jointly connected to a fixed seat, and the fixed seat is fixedly connected to the driving motor. The two rack plates are jointly connected to an adjusting gear, and the adjusting gear is rotatably connected to the connecting shaft. The connecting shaft and the adjusting shaft are jointly connected to a connecting plate, and the connecting plate rotates around the connecting shaft.

[0010] In the above-mentioned device, a plurality of stratification parts are arranged in the screening box. The plurality of stratification parts divide the screening box into a plurality of independent material storage spaces. The connection part of each material storage space includes a stratification net matching the upper filter net. The position of each stratification net is directly opposite to the position of the filter net. The stratification part closest to the driving motor is set as a sealed structure.

[0011] In the above-mentioned device, the transportation component further includes an annular conveyor belt. The bottom of the stratification part is fixed to the top of the conveyor belt. A chute is opened at the bottom of the conveyor belt corresponding to each stratification net. A slider fixedly connected to the stratification part is slidably connected in the chute. The slider is connected to a hydraulic cylinder, and the hydraulic cylinder is arranged below the conveyor belt. The slider is set as a "convex" structure and includes an upper slider and a lower slider that can be disassembled from each other. The upper slider and the lower slider are magnetically attracted to each other. Both sides of the upper slider are connected to the side wall of the chute through springs. A sealing plate is fixedly arranged on both sides of the upper slider. The sealing plate is hermetically slidably connected to the side wall of the chute and hermetically seals the part of the chute above the spring.

[0012] In the above-mentioned device, a plurality of discharge ports are opened on the side of the guiding plate far from the screening box. A sealing door is arranged at each discharge port. An auxiliary pushing block is arranged on the opposite side of the sealing door. The auxiliary pushing block is slidably connected to the conveyor belt through a hydraulic system.

[0013] A concrete screening method using the above-mentioned device includes 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 transportation component 9 further includes an annular conveyor belt 92. The bottom of the layered part 21 is fixed to the top of the conveyor belt 92. A chute 93 is provided at the bottom of the conveyor belt 92 corresponding to each layered mesh 22. A slider 94 fixedly connected to the layered part 21 is slidably connected in the chute 93. The slider 94 is connected to a hydraulic cylinder 95. The hydraulic cylinder 95 is arranged below the conveyor belt 92. The slider 94 is arranged in a "convex" shape and includes an upper slider 941 and a lower slider 942 that can be disassembled from each other. The upper slider 941 and the lower slider 942 are magnetically attracted to each other. Both sides of the upper slider 941 are connected to the side wall of the chute 93 through springs 96. The lower slider 942 is connected to the output shaft of the hydraulic cylinder 95. In this way, when the two are combined, the lower slider 942 can drive the upper slider 941 to move, so that the layered mesh 22 generates reciprocating movement, and the materials in multiple storage spaces can be redistributed. Among them, the part with the smallest particle size of the materials should actually be in the storage space close to the feed inlet. Along the direction of the conveyor belt 92, the particle size of the materials in the storage space gradually increases. In this way, when the multiple layered meshes 22 move reciprocally, the part with a smaller particle size in the storage space on the side with a larger particle size will enter the side with a smaller particle size, thus avoiding the problem that the part with a smaller particle size is wrapped inside the materials with a larger particle size when the materials pass through the filter screen 6 and enter different storage spaces, resulting in a lower differentiation degree of the materials after overall screening;

[0034] Both sides of the upper slider 941 are fixedly provided with a sealing plate 97. The sealing plate 97 is slidably and sealingly connected to the side wall of the chute 93 and hermetically seals the part of the chute 93 above the spring 96, which can prevent the materials from falling off the chute 93 and ensure that the materials are always on the conveyor belt 92. A plurality of discharge ports 12 are provided 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. On the opposite side of the sealing door 13, an auxiliary push block 14 is provided. The auxiliary push block 14 is slidably connected to the conveyor belt 92 through a hydraulic system.

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

[0036] S1: Convey the concrete mixed with particles of multiple sizes to the feed cylinder 3 through the feed inlet, and then start the vibration motor to make the materials gradually move along the axial direction of the feed cylinder 3;

[0037] S2: Start the driving motor 83 to make the arc plate 7 swing in the feed cylinder 3, and delay the speed of the materials moving axially in the feed cylinder 3 through the swing;

[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); A feeding cylinder (3) is provided with a feeding port, and a feeding hopper (4) is connected to the feeding port. Concrete enters the feeding cylinder (3) through the feeding hopper and is conveyed along the axial direction of the feeding cylinder (3). A vibration motor is connected to the feeding cylinder (3). A mixing component (5) is also provided in the feeding cylinder (3). Multiple filter screens (6) are provided in the feeding cylinder (3) along the feeding direction of the feeding port (4). The sieve holes of the multiple filter screens (6) are progressively larger. The multiple filter screens (6) are 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 connected with a drive component (8). The drive component (8) drives the mixing component (5) to rotate while driving the arc plate (7) to swing.

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

3. The concrete screening device according to claim 1, characterized in that, Both sets of exhaust holes (53) are inclined, and the inclination directions of each set of exhaust holes (53) are opposite. Each exhaust hole (53) is connected to a jet pipe (55) arranged along its inclination direction. The side of the air inlet channel (52) away from the feed port (4) is connected to a pressurizing pipe (54), and the pressurizing pipe (54) is connected to an external pressurizing 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 (85). 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 1, characterized in that, 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.

6. The concrete screening device according to claim 2, characterized in that, The transport assembly (9) further includes an annular conveyor belt (92). The bottom of the layered portion (21) is fixed to the top of the conveyor belt (92). A groove (93) is provided at the bottom of each layered mesh (22) on the conveyor belt (92). A slider (94) fixedly connected to the layered portion (21) is slidably connected in the groove (93). A hydraulic cylinder (95) is connected to the slider (94). The hydraulic cylinder (95) is located below the conveyor belt (92). The slider (94) is positioned... The structure is convex and includes an upper slider (941) and a lower slider (942) that can be separated from each other. The upper slider (941) and the lower slider (942) are magnetically attracted to each other. Both sides of the upper slider (941) are connected to the side wall of the slide groove (93) by springs (96). A sealing plate (97) is fixedly provided on both sides of the upper slider (941). The sealing plate (97) is slidably connected to the side wall of the slide groove (93) and movably seals the part of the slide groove (93) above the spring (96).

7. The concrete screening device according to claim 2, characterized in that, 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). An auxiliary push block (14) is provided on the opposite side of the sealing door (13). The auxiliary push block (14) is slidably connected to the conveyor belt (92) through a hydraulic system.

8. A method for screening concrete, characterized in that, The apparatus of any one of claims 1 to 7 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: Start the auxiliary pusher block (14) to unload the material from multiple storage spaces.

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