Aggregate screening device for recycling green high-performance concrete

Abstract

The utility model discloses an aggregate screening device of regenerative green high performance concrete relates to concrete aggregate screening technical field, including screening box, the inside wall fixed mounting of screening box has buffer tank, the first screen cloth and second screen plate are slidably arranged in screening box, the first screen cloth is in abutment with second screen plate, the sliding plate is slidably arranged in buffer tank, the top fixed mounting of sliding plate has slide column, in the utility model discloses, when the aggregate falls in the top of second screen plate, the second screen plate can drive the first screen cloth, slide column and sliding plate to move downward and compress the first spring and absorb the impact force, after the complete absorption of impact force, cooperation first damping jar can make the first spring slowly spring back, and this reciprocation can realize the effect of the buffer of first screen cloth and second screen plate, and it is helpful to reduce the problem that first screen cloth is damaged by aggregate impact, thereby effectively prolongs the service life of first screen cloth and second screen plate.

Description

Technical Field

[0001] This utility model relates to the field of concrete aggregate screening technology, specifically to an aggregate screening device for recycled green high-performance concrete. Background Technology

[0002] Aggregates made from waste concrete are called recycled concrete aggregates, or simply recycled aggregates. In order to make secondary use of energy, it is now necessary to use aggregate screening devices to screen the aggregates by size, so as to classify and collect them according to their size.

[0003] To accommodate different screening specifications, existing aggregate screening devices typically stack two screen plates together and then adjust the position of the lower screen plate to misalign the apertures of the two screen plates, thereby facilitating the adjustment of the screening aperture and achieving the effect of screening aggregates of different diameters.

[0004] Although the existing aggregate screening devices can screen aggregates of different diameters as needed, the aggregates generate a large impact force when falling onto the screening plate. Over time, this impact force can easily damage the screening plate, thereby increasing unnecessary maintenance costs.

[0005] To address these issues, we designed an aggregate screening device for recycled green high-performance concrete. Utility Model Content

[0006] The purpose of this invention is to provide an aggregate screening device for recycled green high-performance concrete to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides an aggregate screening device for recycled green high-performance concrete, including a screening box. A buffer box is fixedly installed on the inner side wall of the screening box. A first screen and a second screen plate are slidably arranged inside the screening box, with the first screen and the second screen plate abutting against each other. A sliding plate is slidably arranged inside the buffer box. A sliding column is fixedly installed on the top of the sliding plate. The other end of the sliding column slides through the buffer box and is fixedly connected to the bottom of the second screen plate. Two first damping cylinders and a first spring are arranged at the bottom of the sliding plate. The other ends of the first damping cylinders and the first spring are arranged on the bottom wall of the buffer box. An electric push rod is fixedly installed on one side of the buffer box, and the driving end of the electric push rod is fixedly connected to one side of the first screen.

[0008] Furthermore, there are two buffer boxes, and the two buffer boxes are respectively fixedly installed on the inner side walls of the screening box, and the number of electric push rods corresponds to the number of buffer boxes.

[0009] Furthermore, a trapezoidal block is fixedly connected to the center of the bottom of the slide plate, and an adjusting frame is fixedly installed at the center of the bottom of the buffer box. A bidirectional lead screw is rotatably installed inside the adjusting frame, and two T-shaped blocks are symmetrically slidably arranged inside the adjusting frame. The T-shaped blocks have threaded holes inside that are adapted to the bidirectional lead screw. The T-shaped blocks are threaded onto the bidirectional lead screw. A motor is fixedly installed on one side of the adjusting frame, and the drive shaft of the motor is connected to one end of the bidirectional lead screw. The top of the T-shaped blocks slides through the adjusting frame and is fixedly installed with a reinforcing buffer. The reinforcing buffer cooperates with the bottom of the trapezoidal block to abut.

[0010] Furthermore, the adjustment frame has a cavity and a sliding opening inside and at the top, respectively. The cavity and the sliding opening are connected. The bidirectional lead screw is rotatably installed in the cavity in the horizontal direction. The T-block is slidably connected in the cavity, and its top end is slidably inserted into the sliding opening.

[0011] Furthermore, the reinforcing buffer includes a second spring, which is fixedly installed on the top of the T-block. The other end of the second spring is provided with a stop plate, and a second damping cylinder is also provided between the stop plate and the T-block. The second spring is movably sleeved on the second damping cylinder.

[0012] Furthermore, a feed hopper is fixedly inserted into the center of the top of the screening box, and a discharge valve is provided at the center of the bottom of the screening box.

[0013] Furthermore, a slag discharge port is provided on the top of one side of the screening box, and a fixing port is provided on the top of the other side of the screening box. A fan is installed in the fixing port, and the fan is flush with the slag discharge port.

[0014] Furthermore, an electromagnet is fixedly installed on the inner side wall of the screening box, and the electromagnet is located between the second screen plate and the fan.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: when the aggregate falls on the top of the second screen plate, the second screen plate can drive the first screen, the sliding column and the sliding plate to move downward and compress the first spring to absorb the impact force. After the impact force is completely absorbed, the first damping cylinder can make the first spring slowly rebound. Repeating this process can achieve a buffering effect on the first screen and the second screen plate, which helps to reduce the problem of the first screen being damaged by the impact of the aggregate, thereby effectively extending the service life of the first screen and the second screen plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are: by turning on the motor, the drive shaft of the motor can drive the bidirectional lead screw to rotate, so that the two T-blocks drive the second spring and the abutment plate to move closer to each other until the two T-blocks abut against each other. At this time, the abutment plate just contacts the bottom of the trapezoidal block, which can increase the buffer elasticity of the system and is suitable for some aggregates with larger diameter and heavier weight.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: by turning on the fan, the blades inside the fan rotate and blow out light impurities in the aggregate through the slag discharge port, which improves the overall quality of the aggregate. By energizing the electromagnet, the electromagnet can adsorb the metallic impurities mixed in the aggregate, which can further improve the quality of the aggregate. Finally, by opening the discharge valve, the screened fine aggregate can be discharged and collected. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram showing a half-section view of the internal structure of the screening box of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the overall external structure of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram showing a half-section view of the interior of the buffer box of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram showing a half-section view of the cavity inside the present invention.

[0022] In the diagram: 1. Screening box; 2. Buffer box; 3. First screen; 4. Slide plate; 5. Sliding column; 6. Second screen plate; 7. First damping cylinder; 8. First spring; 9. Trapezoidal block; 10. Adjusting frame; 11. Two-way lead screw; 12. T-block; 13. Motor; 14. Cavity; 15. Sliding port; 16. Second spring; 17. Support plate; 18. Second damping cylinder; 19. Feed hopper; 20. Discharge valve; 21. Slag discharge port; 22. Fixing port; 23. Fan; 24. Electromagnet; 25. Electric push rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4This utility model provides a technical solution: an aggregate screening device for recycled green high-performance concrete, including a screening box 1, a buffer box 2 fixedly installed on the inner side wall of the screening box 1, a first screen 3 and a second screen plate 6 slidably arranged inside the screening box 1, the first screen 3 abutting against the second screen plate 6, a sliding plate 4 slidably arranged inside the buffer box 2, a sliding column 5 fixedly installed on the top of the sliding plate 4, the other end of the sliding column 5 slidably passing through the buffer box 2 and fixedly connected to the bottom of the second screen plate 6, two first damping cylinders 7 and a first spring 8 arranged at the bottom of the sliding plate 4, the other ends of the first damping cylinders 7 and the first spring 8 arranged on the inner bottom wall of the buffer box 2, an electric push rod 25 fixedly installed on one side of the buffer box 2, the driving end of the electric push rod 25 fixedly connected to one side of the first screen 3, a feed hopper 19 fixedly inserted into the center of the top of the screening box 1, and a discharge valve 20 arranged at the center of the bottom of the screening box 1.

[0025] In practice, the electric push rod 25 is first activated, causing the drive end of the electric push rod 25 to extend and retract, which in turn causes the first screen 3 to slide at the bottom of the second screen plate 6. This allows the first screen 3 and the inner aperture of the second screen plate 6 to be misaligned to a suitable position, thus facilitating the adjustment of the overall aperture size of the screening. Then, the aggregate is poured into the screening box 1 through the feed hopper 19. It should be noted that a vibration motor needs to be installed on the second screen plate 6 (since the installation of a vibration motor is a known technology in existing vibration screening, it is not shown in the figure). The vibration motor is then activated, causing the second screen plate 6 and the first screen 3 to be subjected to the transmitted vibration. At the same time, the aggregate at the top of the second screen plate 6 will be fed through the aperture formed by the first screen 3 and the second screen plate 6, thus achieving the screening effect.

[0026] It should be noted that we can open a discharge port on one side of the screening box 1, and then install a cylinder and a push plate on the side of the screening box 1 away from the discharge port. The drive end of the cylinder is fixedly connected to the push plate, and the push plate slides against the top of the second screen plate 6. The cylinder can be opened, so that the cylinder drives the push plate to move on the top of the second screen plate 6 and discharges the large particles of aggregate blocked on the top of the second screen plate 6 through the discharge port to the designated position.

[0027] When the aggregate falls onto the top of the second screen plate 6, the second screen plate 6 can drive the first screen 3 to press down the sliding column 5, so that the sliding column 5 drives the slide plate 4 to move downward and compress the first spring 8 to absorb the impact force. After the impact force is completely absorbed, the first damping cylinder 7 can make the first spring 8 slowly rebound. Repeating this process can achieve a buffering effect on the first screen 3 and the second screen plate 6, which helps to reduce the problem of the first screen 3 being damaged by the impact of the aggregate, thereby effectively extending the service life of the first screen 3 and the second screen plate 6. Finally, the discharge valve 20 is opened to discharge and collect the screened fine aggregate.

[0028] See Figure 1-4There are two buffer boxes 2, and the two buffer boxes 2 are fixedly installed on the inner side walls of the screening box 1, respectively. The number of electric push rods 25 corresponds to the number of buffer boxes 2. The setting of two buffer boxes 2 can ensure that the two sides of the bottom of the second screen plate 6 are subjected to balanced forces, thereby improving the stability of the second screen plate 6 when sliding.

[0029] See Figure 1-4 A trapezoidal block 9 is fixedly connected to the center of the bottom of the slide plate 4. An adjusting frame 10 is fixedly installed at the center of the bottom of the buffer box 2. A two-way lead screw 11 is rotatably installed inside the adjusting frame 10. Two T-shaped blocks 12 are symmetrically slidably arranged inside the adjusting frame 10. The T-shaped blocks 12 have threaded holes that are compatible with the two-way lead screw 11. The T-shaped blocks 12 are threaded onto the two-way lead screw 11. A motor 13 is fixedly installed on one side of the adjusting frame 10. The drive shaft of the motor 13 is connected to one end of the two-way lead screw 11. The top of the T-shaped blocks 12 slides through the adjusting frame 10 and is fixedly installed with a reinforcing buffer. The reinforcing buffer is engaged with the bottom of the trapezoidal block 9.

[0030] The adjusting frame 10 has a cavity 14 and a sliding opening 15 on its interior and top, respectively. The cavity 14 and the sliding opening 15 are connected. The bidirectional lead screw 11 is installed in the cavity 14 and rotates horizontally. The T-block 12 is slidably connected in the cavity 14 and its top end is slidably inserted into the sliding opening 15. The reinforcing buffer includes a second spring 16, which is fixedly installed on the top of the T-block 12. The other end of the second spring 16 is provided with a stop plate 17. A second damping cylinder 18 is also provided between the stop plate 17 and the T-block 12. The second spring 16 is movably sleeved on the second damping cylinder 18.

[0031] In specific implementation, based on the above implementation, by turning on the motor 13, the drive shaft of the motor 13 can drive the bidirectional lead screw 11 to rotate, so that the two T-blocks 12 drive the second spring 16 and the abutment plate 17 to move closer to each other until the two T-blocks 12 abut against each other. At this time, the abutment plate 17 is in contact with the bottom of the trapezoidal block 9, which can increase the buffer elasticity of the system and is suitable for some aggregates with larger diameter and heavier weight.

[0032] See Figure 1-4 The top of one side of the screening box 1 is provided with a slag discharge port 21, and the top of the other side of the screening box 1 is provided with a fixing port 22. A fan 23 is installed in the fixing port 22, and the fan 23 is flush with the slag discharge port 21.

[0033] In practice, based on the above implementation, before the aggregate falls to the top of the second screen plate 6, the fan 23 needs to be turned on so that the blades inside the fan 23 rotate and blow out the light impurities in the aggregate through the slag discharge port 21, thereby improving the overall quality of the aggregate.

[0034] See Figure 1-4An electromagnet 24 is fixedly installed on the inner wall of the screening box 1, and the electromagnet 24 is located between the second screen plate 6 and the fan 23. By energizing the electromagnet 24, the electromagnet 24 can adsorb the metal impurities mixed in the aggregate, which can further improve the quality of the aggregate. Finally, the discharge valve 20 is opened to discharge and collect the screened fine aggregate.

[0035] It should be noted that we can also open a discharge port on the screening box 1, so that the discharge port is located below the electromagnet 24, and set a guide plate inside the discharge port. When the electromagnet 24 is closed, the metal impurities will slide off the electromagnet 24 and slide out of the screening box 1 to a designated position along the guide plate, which is convenient for collecting the metal impurities.

[0036] Working principle: Before use, all electrical appliances inside and outside the screening box 1 need to be connected to an external power source, or a battery pack needs to be installed in an area outside the screening box 1 that does not obstruct other components. Then, the battery pack is connected to the electrical appliances through a wire. It is also necessary to avoid the problem of the wire getting tangled due to the movement of the components. The wire needs to be buried to provide power to the electrical appliances, thereby ensuring their normal operation. Since connecting the electrical appliances to an external power source or setting up a battery pack for power supply is existing technology and is not a problem that needs to be solved in the background technology of this manual, it will not be explained in detail.

[0037] In use, first turn on the electric push rod 25, causing the drive end of the electric push rod 25 to extend and retract, driving the first screen 3 to slide at the bottom of the second screen plate 6. This allows the first screen 3 and the inner aperture of the second screen plate 6 to be misaligned to a suitable position, thus facilitating the adjustment of the overall aperture size of the screening. Then, the aggregate is poured into the screening box 1 through the feed hopper 19. It should be noted that a vibration motor needs to be installed on the second screen plate 6 (since the installation of a vibration motor is a known technology in existing vibration screening, it is not shown in the figure). Then, turn on the vibration motor, so that the second screen plate 6 and the first screen 3 are subjected to the transmitted vibration. At the same time, the aggregate on the top of the second screen plate 6 will be fed through the aperture formed by the first screen 3 and the second screen plate 6, achieving the screening effect.

[0038] During the above operation, when the aggregate falls on the top of the second screen plate 6, the second screen plate 6 can drive the first screen 3 to press down the sliding column 5, so that the sliding column 5 drives the slide plate 4 to move downward and compress the first spring 8 to absorb the impact force. After the impact force is completely absorbed, the first damping cylinder 7 can make the first spring 8 slowly rebound. Repeating this process can achieve a buffering effect on the first screen 3 and the second screen plate 6, which helps to reduce the problem of the first screen 3 being damaged by the impact of the aggregate, thereby effectively extending the service life of the first screen 3 and the second screen plate 6.

[0039] By turning on the motor 13, the drive shaft of the motor 13 can drive the bidirectional lead screw 11 to rotate, causing the two T-blocks 12 to drive the second spring 16 and the abutment plate 17 to move closer to each other until the two T-blocks 12 touch. At this time, the abutment plate 17 is in contact with the bottom of the trapezoidal block 9, which can increase the buffer elasticity of the system and is suitable for some aggregates with larger diameter and heavier weight.

[0040] Before the aggregate falls onto the top of the second screen plate 6, the fan 23 needs to be turned on so that the blades inside the fan 23 rotate and blow out the light impurities in the aggregate through the slag discharge port 21, which improves the overall quality of the aggregate. In addition, by energizing the electromagnet 24, the electromagnet 24 can adsorb the metal impurities mixed in the aggregate, which can further improve the quality of the aggregate. Finally, the discharge valve 20 is opened to discharge and collect the screened fine aggregate.

Claims

1. A device for screening aggregates of recycled green high-performance concrete, comprising a screening box (1), characterized in that, A buffer box (2) is fixedly installed on the inner side wall of the screening box (1). A first screen (3) and a second screen plate (6) are slidably arranged inside the screening box (1). The first screen (3) abuts against the second screen plate (6). A sliding plate (4) is slidably arranged inside the buffer box (2). A sliding column (5) is fixedly installed on the top of the sliding plate (4). The other end of the sliding column (5) slides through the buffer box (2) and is fixedly connected to the bottom of the second screen plate (6). Two first damping cylinders (7) and a first spring (8) are arranged at the bottom of the sliding plate (4). The other ends of the first damping cylinders (7) and the first spring (8) are arranged on the inner bottom wall of the buffer box (2). An electric push rod (25) is fixedly installed on one side of the buffer box (2). The driving end of the electric push rod (25) is fixedly connected to one side of the first screen (3).

2. The aggregate screening device for recycled green high-performance concrete as described in claim 1, characterized in that: The number of buffer boxes (2) is two, and the two buffer boxes (2) are respectively fixedly installed on the inner side walls of the screening box (1). The number of electric push rods (25) corresponds to the number of buffer boxes (2).

3. The aggregate screening device for recycled green high-performance concrete as described in claim 1, characterized in that: A trapezoidal block (9) is fixedly connected to the center of the bottom of the slide plate (4). An adjustment frame (10) is fixedly installed at the center of the bottom of the buffer box (2). A two-way lead screw (11) is rotatably installed inside the adjustment frame (10). Two T-shaped blocks (12) are symmetrically slidably installed inside the adjustment frame (10). The T-shaped blocks (12) have threaded holes that are compatible with the two-way lead screw (11). The T-shaped blocks (12) are threaded onto the two-way lead screw (11). A motor (13) is fixedly installed on one side of the adjustment frame (10). The drive shaft of the motor (13) is connected to one end of the two-way lead screw (11). The top of the T-shaped blocks (12) slides through the adjustment frame (10) and is fixedly installed with a reinforcing buffer. The reinforcing buffer is engaged with the bottom of the trapezoidal block (9).

4. The aggregate screening device for recycled green high-performance concrete as described in claim 3, characterized in that: The adjustment frame (10) has a cavity (14) and a slide (15) on its interior and top, respectively. The cavity (14) and the slide (15) are connected. The bidirectional lead screw (11) is installed in the cavity (14) in a horizontal direction. The T-block (12) is slidably connected in the cavity (14) and its top end is slidably inserted into the slide (15).

5. The aggregate screening device for recycled green high-performance concrete as described in claim 3, characterized in that: The reinforcing buffer includes a second spring (16), which is fixedly installed on the top of the T-block (12). The other end of the second spring (16) is provided with a stop plate (17). A second damping cylinder (18) is also provided between the stop plate (17) and the T-block (12). The second spring (16) is movably sleeved on the second damping cylinder (18).

6. The aggregate screening device for recycled green high-performance concrete as described in claim 1, characterized in that: A feed hopper (19) is fixedly inserted into the center of the top of the screening box (1), and a discharge valve (20) is provided at the center of the bottom of the screening box (1).

7. The aggregate screening device for recycled green high-performance concrete as described in claim 1, characterized in that: The top of one side of the screening box (1) is provided with a slag discharge port (21), and the top of the other side of the screening box (1) is provided with a fixing port (22). A fan (23) is installed in the fixing port (22), and the fan (23) is flush with the slag discharge port (21).

8. The aggregate screening device for recycled green high-performance concrete as described in claim 1, characterized in that: An electromagnet (24) is fixedly installed on the inner wall of the screening box (1), and the electromagnet (24) is located between the second sieve plate (6) and the fan (23).

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