Aggregate screening device for recycled ultra-high performance concrete

Abstract

The utility model discloses an aggregate screening device for recycled ultra-high performance concrete, and relates to the technical field of concrete aggregates. The aggregate screening device for the recycled ultra-high performance concrete comprises an outer shell, the bottom of the outer shell communicates with a box through a discharging channel, a screen drum is rotationally arranged in the outer shell, fixing discs are arranged on the left side and the right side of the outer shell correspondingly, the two ends of the screen drum are rotationally connected with the fixing discs on the two sides correspondingly, and a rotating rod is rotationally arranged between the two fixing discs; a spiral conveying blade is arranged on the rotating rod and matched with an inner cavity of the screen drum, aggregate can be conveyed conveniently, a second gear is arranged on the outer wall of the screen drum, a first gear is meshed with the lower side of the second gear, the screen drum is driven to rotate while the aggregate is conveyed conveniently, and the screening effect of the screen drum on the aggregate is effectively improved; and a second-stage screening assembly is arranged on the box body, so that the aggregate screened by the screen drum can be subjected to secondary screening conveniently, and the screening effect of the device on the recycled concrete aggregate is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete aggregates, in particular to an aggregate screening device for recycled ultra-high performance concrete. Background Art

[0002] Recycled concrete refers to new concrete made by crushing, cleaning, and grading discarded concrete blocks, mixing them with grading in a certain proportion, partially or completely replacing natural aggregates such as sand and gravel (mainly coarse aggregates), and then adding cement, water, etc. When using recycled concrete aggregates, screening equipment is required for screening and processing.

[0003] Publication No.: CN218108299U, discloses: a concrete aggregate screening device, wherein a convex disc is driven to rotate by a first motor, a supporting plate is driven to move up and down by the convex disc, the supporting plate is moved and limited by a sliding connection between a limiting cylinder and a limiting rod, a protective shell is driven to move up and down by the supporting plate, materials enter the feeding barrel from the feeding hopper, a second motor is started to drive the spiral conveying blade to rotate to push the concrete aggregate, fine gravel is discharged through the sieve holes, the gravel is discharged through the guide plate, and the aggregate is discharged through the discharge pipe, thereby realizing full screening and classified discharge processing of concrete aggregate.

[0004] The above-mentioned prior art still has the following disadvantages in the specific implementation process:

[0005] When concrete aggregate enters the feeding barrel, the overall weight of the device is relatively large. The convex disc is driven to rotate by the first motor, and the tray is used to drive the overall device to move up and down, which requires a large energy output and is not practical. In addition, when the first motor and the second motor are running, they both require electric drive, which increases the use of electrical appliances in the device. Multiple driving mechanisms are set, which increases energy consumption. The feeding barrel can only move up and down. When a large amount of aggregate is input, the aggregate located in the center is not easy to be turned over, and the aggregate can only be screened once, and the screening effect is not good.

[0006] In view of the above problems, we propose an aggregate screening device for recycled ultra-high performance concrete. Utility Model Content

[0007] Technical Solution

[0008] In order to solve the above technical problems, the utility model provides an aggregate screening device for recycled ultra-high performance concrete, comprising an outer shell, the bottom of the outer shell is connected to a box body through a feeding channel, a screen drum is rotatably arranged inside the outer shell, both ends of the screen drum extend to the outside of the outer shell, and a portion of the screen drum surface located on the inner side of the outer shell is penetrated by a plurality of screen holes, fixed plates are arranged on the left and right sides of the outer shell, a plurality of reinforcement rods are fixed between the fixed plates and the outer shell, two ends of the screen drum are respectively rotatably connected to the fixed plates on both sides, a rotating rod is rotatably arranged between the two fixed plates, a spiral conveying blade is arranged on the rotating rod, which cooperates with the inner cavity of the screen drum, a second gear is arranged on the right side of the outer wall of the screen drum, a rotating shaft is rotatably arranged on the outer shell, a first gear is arranged on the rotating shaft, which meshes with the second gear, a secondary screening assembly is arranged on the box, and a transmission assembly is arranged between the rotating rod and the rotating shaft.

[0009] The secondary screening assembly includes a screen plate, a piston rod, a lifting plate, a return spring and a cam. The screen plate is movably arranged inside the box and is inclined. The two piston rods are movably cooperated with the box. The lower end of the piston rod is fixedly connected to the screen plate, and the lifting plate is fixed to the upper end of the piston rod. The return spring is connected between the lifting plate and the top of the box, and the return spring is sleeved on the outside of the piston rod.

[0010] The rotating shaft passes through the outer shell, the two cams are relatively arranged on the rotating shaft, and the cams cooperate with the lifting plate. A discharge port is opened on the front surface of the box body, the front end of the screen plate passes through the discharge port and extends to the outside of the box body, and the screen plate cooperates with the discharge channel.

[0011] The transmission assembly comprises a pulley and a transmission belt. The two pulleys are respectively arranged on the rotating rod and the rotating shaft, and the transmission belt is arranged between the two pulleys.

[0012] The fixed plate on the left is provided with a discharge pipe, which is communicated with the inner cavity of the screen cylinder. The fixed plate on the right is provided with a feed hopper, which is communicated with the inner cavity of the screen cylinder.

[0013] A mounting bracket is fixed on the right side of the box body, a servo motor is installed inside the mounting bracket, an output end of the servo motor is connected to the right end of the rotating shaft, and a movable door is movably installed on the rear side of the box body.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model drives the rotating shaft to rotate by a servo motor, and realizes the synchronous rotation of the rotating shaft and the rotating rod in combination with the transmission component, wherein the mutual cooperation between the rotating rod and the spiral conveying blade is convenient for conveying the concrete aggregate entering the screen drum, and the screen holes on the surface of the screen drum are convenient for primary screening of the concrete aggregate during the conveying process. At the same time, under the meshing action of the first gear and the second gear, combined with the rotation cooperation of the screen drum and the outer shell, and the rotation connection between the two ends of the screen drum and the fixed plate, it is convenient to drive the screen drum to rotate synchronously in the opposite direction, which effectively improves the screening effect of the screen drum on the concrete aggregate, and combined with the material discharge channel, it is convenient to make the aggregate after primary screening fall downward into the box body;

[0016] Among them, under the action of the secondary screening component, it is convenient to carry out secondary screening of the aggregates after the primary screening, which further improves the screening effect of the device on the concrete aggregate, and there is no need to set up multiple driving mechanisms that require electric drive. The problem in the prior art that when the concrete aggregate enters the feeding barrel, the overall weight of the device is large, and the convex disc is driven by the first motor to rotate, and the tray is used to drive the device as a whole to move up and down, which requires a large energy output and is not practical. In addition, when the first motor and the second motor are running, they both require electric drive, which increases the use of electrical appliances in the device, and multiple driving mechanisms are set, which increases the energy consumption. At the same time, the problem that the feeding barrel in the prior art can only move up and down, when more aggregates are put in, the aggregates located in the center are not easy to be turned over, and the aggregates can only be screened once, resulting in poor screening effect, is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Figure 3 for Figure 2 Structural diagram of the middle section AA;

[0020] Figure 4 for Figure 3 Schematic diagram of the structure of the middle section BB;

[0021] Figure 5 for Figure 3 Schematic diagram of the enlarged structure at C in the middle;

[0022] Figure 6 for Figure 3 Schematic diagram of the enlarged structure at D in the middle;

[0023] Figure 7 for Figure 1 A schematic diagram of the structure from another perspective;

[0024] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at E in the middle.

[0025] The markings in the attached drawings are: 1. outer shell; 2. box body; 3. screen drum; 4. fixed plate; 5. rotating rod; 6. spiral conveying blade; 7. screen plate; 8. piston rod; 9. lifting plate; 10. reset spring; 11. rotating shaft; 12. first gear; 13. second gear; 14. cam; 15. transmission assembly; 16. discharge port; 17. discharge pipe; 18. feed hopper; 19. reinforcement rod; 20. servo motor; 21. movable door. DETAILED DESCRIPTION

[0026] This specific embodiment is an aggregate screening device for recycled ultra-high performance concrete, such as Figure 1-Figure 8 As shown, the aggregate screening device for recycled ultra-high performance concrete comprises an outer shell 1, the bottom of the outer shell 1 is connected with a box body 2 through a material discharge channel, a screen drum 3 is rotatably arranged inside the outer shell 1, both ends of the screen drum 3 extend to the outside of the outer shell 1, and a portion of the surface of the screen drum 3 located on the inner side of the outer shell 1 is penetrated by a plurality of screen holes, fixed disks 4 are arranged on the left and right sides of the outer shell 1, a plurality of reinforcing rods 19 are fixed between the fixed disks 4 and the outer shell 1, both ends of the screen drum 3 are rotatably connected with the fixed disks 4 on both sides, a rotating rod 5 is rotatably arranged between the two fixed disks 4, a spiral conveying blade 6 is arranged on the rotating rod 5, and cooperates with the inner cavity of the screen drum 3, a second gear 13 is arranged on the right side of the outer wall of the screen drum 3, a rotating shaft 11 is rotatably arranged on the outer shell 1, a first gear 12 is arranged on the rotating shaft 11, and meshes with the second gear 13, a secondary screening component is arranged on the box body 2, and a transmission component 15 is arranged between the rotating rod 5 and the rotating shaft 11.

[0027] The transmission assembly 15 facilitates the synchronous rotation of the rotating shaft 11 and the rotating rod 5, wherein the mutual cooperation between the rotating rod 5 and the spiral conveying blade 6 facilitates the transportation of the concrete aggregate entering the screen drum 3, and the sieve holes on the surface of the screen drum 3 facilitate the primary screening of the concrete aggregate during the transportation process. At the same time, under the meshing action of the first gear 12 and the second gear 13, combined with the rotational cooperation of the screen drum 3 and the outer shell 1, and the rotational connection between the two ends of the screen drum 3 and the fixed plate 4, it is convenient to drive the screen drum 3 to rotate synchronously in the opposite direction, which effectively improves the screening effect of the screen drum 3 on the concrete aggregate. Combined with the discharge channel, it is convenient to make the aggregate after the primary screening fall downward into the box body 2. Under the action of the secondary screening assembly, it is convenient to perform secondary screening on the aggregate after the primary screening of the screen drum 3, which further improves the screening effect of the device on the concrete aggregate, and there is no need to set up a plurality of electrical appliances that require electric drive, thereby reducing energy consumption.

[0028] The secondary screening assembly includes a sieve plate 7, a piston rod 8, a lifting plate 9, a return spring 10 and a cam 14. The sieve plate 7 is movably arranged inside the box body 2, and the sieve plate 7 is inclined. The two piston rods 8 are movably matched with the box body 2. The lower end of the piston rod 8 is fixedly connected to the sieve plate 7, and the lifting plate 9 is fixed to the upper end of the piston rod 8. The return spring 10 is connected between the lifting plate 9 and the top of the box body 2, and the return spring 10 is sleeved on the outside of the piston rod 8. The rotating shaft 11 passes through the outer shell 1. The two cams 14 are relatively arranged on the rotating shaft 11, and the cam 14 and the lifting plate 9 cooperate with each other. A discharge port 16 is opened on the front surface of the box body 2. The front end of the sieve plate 7 passes through the discharge port 16 and extends to the outside of the box body 2, and the sieve plate 7 cooperates with the discharge channel.

[0029] Through the mutual cooperation of the cam 14 and the lifting plate 9, combined with the active cooperation of the piston rod 8 and the box body 2, and the elastic action of the return spring 10, it is convenient to drive the screen plate 7 to reciprocate up and down, thereby realizing secondary screening of the aggregates that have entered the box body 2 after preliminary screening, and effectively improving the screening effect of the device on recycled concrete aggregates.

[0030] The transmission assembly 15 includes a pulley and a transmission belt. The two pulleys are respectively arranged on the rotating rod 5 and the rotating shaft 11, and the transmission belt is arranged between the two pulleys.

[0031] A discharge pipe 17 is provided on the left fixed plate 4 , and the discharge pipe 17 is communicated with the inner cavity of the sieve cylinder 3 . A feed hopper 18 is provided on the right fixed plate 4 , and the feed hopper 18 is communicated with the inner cavity of the sieve cylinder 3 .

[0032] A mounting bracket is fixed on the right side of the box body 2, a servo motor 20 is installed inside the mounting bracket, the output end of the servo motor 20 is connected to the right end of the rotating shaft 11, and a movable door 21 is movably installed on the rear side of the box body 2, through which the concrete aggregate collected at the bottom of the inner cavity of the box body 2 can be easily taken out.

[0033] Example:

[0034] When in use, the recycled concrete aggregate to be screened is first put into the feed hopper 18, and enters the screen drum 3 through the feed hopper 18, and the servo motor 20 is started, and the servo motor 20 drives the rotating shaft 11 to rotate, and combined with the transmission assembly 15, the rotating rod 5 is driven to rotate synchronously;

[0035] The rotating rod 5 drives the spiral conveying blade 6 to rotate, and the recycled concrete aggregate put into the screen drum 3 is conveyed to the left side;

[0036] At the same time, during the rotation of the rotating shaft 11, the first gear 12 is driven to rotate. Under the meshing action of the first gear 12 and the second gear 13, combined with the rotational cooperation between the screen drum 3 and the outer shell 1, and the rotational connection between the two ends of the screen drum 3 and the fixed plate 4, the screen drum 3 is driven to rotate synchronously in the opposite direction, which effectively improves the turning effect of the concrete aggregate during the transportation process inside the screen drum 3. The medium and small particles of the recycled concrete aggregate are screened out through the sieve holes on the surface of the screen drum 3 and fall into the box body 2 through the discharge channel. The coarse particles of the recycled concrete aggregate cannot pass through the sieve holes on the surface of the screen drum 3 and are gathered inside the screen drum 3. They continue to be pushed to the left and are finally discharged through the discharge pipe 17, thereby realizing the primary screening of the recycled concrete aggregate.

[0037] The concrete aggregates after primary screening that fall into the box body 2 fall on the sieve plate 7, wherein during the rotation of the rotating shaft 11, the cam 14 is driven to rotate, and when the raised portion of the cam 14 approaches the lifting plate 9, the lifting plate 9 is pressed downward, and the return spring 10 is compressed, and the movable cooperation between the piston rod 8 and the box body 2, and the movable setting of the sieve plate 7, the sieve plate 7 is driven to move downward along the inner cavity of the box body 2, and when the raised portion of the cam 14 is away from the lifting plate 9, the lifting plate 9 is pressed upward to the initial position under the elastic action of the return spring 10, thereby realizing the up and down reciprocating motion of the sieve plate 7, and the small particles of concrete aggregate fall into the lower side of the inner part of the box body 2 through the holes on the sieve plate 7, and are collected uniformly, and finally taken out for use under the action of the movable door 21 on the rear side of the box body 2;

[0038] The medium-sized concrete aggregate stays on the sieve plate 7, slides forward under the inclination of the sieve plate 7, and is finally discharged through the discharge port 16, so as to achieve the purpose of secondary screening of the concrete aggregate, effectively improving the screening effect of the device on the concrete aggregate, and there is no need to set up multiple driving mechanisms that require electric drive, which solves the problem in the prior art that when the concrete aggregate enters the feeding barrel, the overall weight of the device is large, and the convex disc is driven by the first motor to rotate, and the tray is used to drive the device as a whole to move up and down, which requires a large energy output and is not practical. Moreover, when the first motor and the second motor are running, they both require electric drive, which increases the use of electrical appliances in the device, and multiple driving mechanisms are set, which increases the energy consumption. At the same time, it solves the problem in the prior art that the feeding barrel can only move up and down, when more aggregate is put in, the aggregate located in the center is not easy to be turned over, and the aggregate can only be screened once, resulting in poor screening effect.

[0039] It should be further explained that the installation structure, connection method or setting method of each component in the utility model are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented. At the same time, the servo motor 20 in the utility model is purchased on the market, and those skilled in the art can install, connect and use it according to the requirements;

[0040] When screening the recycled concrete aggregate, the staff needs to set up collection boxes at the discharge pipe 17 and the discharge port 16 to collect the screened aggregate for subsequent use.

[0041] All technical features in this embodiment can be freely combined according to actual needs.

[0042] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An aggregate screening device for recycled ultra-high performance concrete, comprising an outer shell (1), characterized in that: The bottom of the outer shell (1) is connected to the box (2) through a material discharge channel. A screen drum (3) is rotatably arranged inside the outer shell (1). Both ends of the screen drum (3) extend to the outside of the outer shell (1). A portion of the surface of the screen drum (3) located inside the outer shell (1) is penetrated by a plurality of screen holes. Fixed plates (4) are arranged on both sides of the outer shell (1). A plurality of reinforcement rods (19) are fixed between the fixed plates (4) and the outer shell (1). Both ends of the screen drum (3) are rotatably connected to the fixed plates (4) on both sides. A rotating rod (5) is rotatably arranged between the fixed disks (4), and a spiral conveying blade (6) is arranged on the rotating rod (5) and cooperates with the inner cavity of the screen cylinder (3). A second gear (13) is arranged on the right side of the outer wall of the screen cylinder (3). A rotating shaft (11) is rotatably arranged on the outer shell (1), and a first gear (12) is arranged on the rotating shaft (11) and meshes with the second gear (13). A secondary screening component is arranged on the box body (2), and a transmission component (15) is arranged between the rotating rod (5) and the rotating shaft (11).

2. The aggregate screening device for recycled ultra-high performance concrete according to claim 1, characterized in that: The secondary screening assembly comprises a screen plate (7), a piston rod (8), a lifting plate (9), a return spring (10) and a cam (14); the screen plate (7) is movably arranged inside the box (2), and the screen plate (7) is arranged to be inclined; the two piston rods (8) are movably matched with the box (2); the lower end of the piston rod (8) is fixedly connected to the screen plate (7); the lifting plate (9) is fixed to the upper end of the piston rod (8); the return spring (10) is connected between the lifting plate (9) and the top of the box (2), and the return spring (10) is sleeved on the outside of the piston rod (8).

3. The aggregate screening device for recycled ultra-high performance concrete according to claim 2, characterized in that: The rotating shaft (11) passes through the outer shell (1), the two cams (14) are arranged on the rotating shaft (11) in a relative manner, and the cams (14) cooperate with the lifting plate (9). A discharge port (16) is provided on the front surface of the box body (2), the front end of the sieve plate (7) passes through the discharge port (16) and extends to the outside of the box body (2), and the sieve plate (7) cooperates with the discharge channel.

4. The aggregate screening device for recycled ultra-high performance concrete according to claim 3, characterized in that: The transmission assembly (15) comprises a pulley and a transmission belt, the two pulleys being arranged on the rotating rod (5) and the rotating shaft (11) respectively, and the transmission belt being arranged between the two pulleys.

5. The aggregate screening device for recycled ultra-high performance concrete according to claim 4, characterized in that: The fixed plate (4) on the left side is provided with a discharge pipe (17), the discharge pipe (17) being in communication with the inner cavity of the sieve cylinder (3); the fixed plate (4) on the right side is provided with a feed hopper (18), the feed hopper (18) being in communication with the inner cavity of the sieve cylinder (3).

6. The aggregate screening device for recycled ultra-high performance concrete according to claim 5, characterized in that: A mounting bracket is fixed to the right side of the box body (2), a servo motor (20) is mounted inside the mounting bracket, an output end of the servo motor (20) is connected to the right end of the rotating shaft (11), and a movable door (21) is movably mounted on the rear side of the box body (2).

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