Concrete aggregate recycling device
The concrete aggregate recycling device, designed with a water spray assembly and a limiting rod, solves the problem of sand adhering to the surface of the aggregate, achieving better sand and gravel separation and more efficient recycling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-25
- Publication Date
- 2026-04-17
AI Technical Summary
When existing vibrating screens separate stone materials, a lot of fine sand adheres to the surface of the stone materials, resulting in a high sand content and affecting the reuse effect.
The system uses a water spray assembly to spray water onto the aggregates. Combined with the design of a vibrating screen plate and a limiting rod, the water spray cleans the sand on the surface of the stone. The guide plate and the limiting rod create a multi-stage leveling and rinsing effect, improving the efficiency of sand and gravel separation.
It effectively reduces the sand content of stone, improves stone quality, achieves more thorough and efficient stone-sand separation, reduces dust, and improves reuse efficiency.
Smart Images
Figure CN121869701A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of concrete technology, and more specifically, to a device for the reuse of concrete aggregates. Background Technology
[0002] A concrete aggregate recycling device is a sand and gravel separator, which is used to screen the stone and sand in concrete aggregates so that waste concrete can be reused.
[0003] After waste concrete is crushed, it contains a mixture of stone and sand. To facilitate more effective reuse, the stone and sand need to be screened. Currently, vibrating screens are generally used to separate the stone and sand for subsequent reuse.
[0004] However, the stone separated using the above method has a high sand content due to the presence of a lot of fine sand on its surface, which needs to be improved. Summary of the Invention
[0005] In order to improve the situation where the sand content of the screened stone is high, this application provides a concrete aggregate recycling device.
[0006] This application provides a concrete aggregate recycling device, which adopts the following technical solution: A concrete aggregate recycling device includes a frame with a screening chamber and a screen plate. The screen plate has sieve holes that restrict the passage of aggregate. The screen plate divides the screening chamber into an upper chamber and a lower chamber. The screen plate is also equipped with a vibration motor, which is configured to drive the screen plate to vibrate when aggregate is placed on it, thereby causing sand to pass through the sieve holes into the lower chamber. The frame is also equipped with a water spraying assembly for spraying water toward the aggregate on the screen plate. The frame is also equipped with a drain outlet communicating with the lower chamber.
[0007] The above technical solution uses a water spraying component to spray water onto the aggregate, which reduces the dust raised during the vibrating screen and washes away the sand adhering to the surface of the stone, making the separation of sand and gravel more thorough and the separation effect of stone and sand better. This reduces the sand content of the stone and improves the quality of the reusable stone.
[0008] Optionally, the screen plate extends downward at an angle along its length, with the lower end of the screen plate extending out of the frame and forming a stone outlet.
[0009] By setting up a stone outlet, aggregates can be continuously conveyed into the screen plate for screening. The screened stone can be discharged from the stone outlet, forming a continuous screening operation, which makes the screening operation more efficient.
[0010] Optionally, the water spray assembly includes a water guide pipe located above the screen plate. The water guide pipe extends along the inclined direction of the screen plate and has several water outlet holes distributed along its length. The water guide pipe is used to connect to a water supply source.
[0011] The above technical solution uses water to spray through the outlet holes of the water pipe, creating a multi-point water spray effect, which makes the washing effect of the stone on the screen plate more thorough and the separation effect of stone and sand better.
[0012] Optionally, the upper chamber is provided with a limiting rod, and a gap is left between the limiting rod and the screen plate for the stone to pass through.
[0013] Through the above technical solution, the limiting rod can create a limiting effect, so that the aggregate on the screen plate is flattened when it passes under the limiting rod, reducing the situation of excessive aggregate stacking, making the water spraying component more thorough, and making the separation effect of stone and sand better.
[0014] Optionally, mounting seats are provided on both sides of the screen plate, and the two ends of the limiting rod are fixed to the two mounting seats one by one. The lower part of the limiting rod gradually increases in size along the inclined direction of the screen plate away from the screen plate, and the rigidity of the limiting rod is greater than that of the screen plate.
[0015] Through the above technical solution, the gradual change in size of the limiting rod along the inclined direction of the screen plate facilitates the introduction of aggregate. The rigidity of the limiting rod is greater than that of the screen plate, so that when the vibration of the screen plate is transmitted to the limiting rod, the deformation vibration amplitude of the screen plate is greater than that of the limiting rod, and the frequency will deviate. When the aggregate passes between the screen plate and the limiting rod, the difference in amplitude and frequency creates a further impact effect, making it easier for the limiting rod to flatten the aggregate, resulting in better and faster flattening.
[0016] Optionally, there are two limiting rods distributed along the inclined direction of the screen plate. The limiting rod located near the stone outlet is the first rod, and the other is the second rod. The second rod is a round rod, and the first rod is a square rod. The gap between the first rod and the screen plate is smaller than the gap between the second rod and the screen plate.
[0017] The above technical solution achieves a two-stage leveling effect through the first and second rods, resulting in better aggregate leveling and a more thorough rinsing process.
[0018] Optionally, the frame is provided with guide plates, which are located above the screen plate. There are two guide plates, which are distributed one-to-one on both sides of the screen plate along the inclined direction. Both guide plates are inclined downwards towards each other. A gap is left between the lower end of the guide plate and the upper surface of the screen plate to restrict the passage of stones. Each guide plate is provided with a relief groove for the limit rod to pass through.
[0019] The above technical solution uses a guide plate to create lateral limiting, which makes the conveying path of aggregate on the screen plate more stable, reduces the occurrence of aggregate falling off the screen plate, makes the rinsing area of the water spray component more stable, and makes the screening effect more stable.
[0020] Optionally, the frame is further provided with a guide plate, which is located above the screen plate and on the side of the first rod away from the second rod. The guide plate is inclined downward toward the first rod, and the inclination direction of the guide plate is opposite to that of the screen plate. The corner of the first rod near the stone outlet is the first corner. The lower end of the guide plate extends to the height of the first corner and leaves a gap of no more than 1 mm between it and the first corner. The upper surface of the guide plate is provided with two side baffles, which are distributed one-to-one on both sides of the guide plate along the length of the first rod. The water guide pipe extends above the guide plate and has a water outlet at the top of the guide plate. The guide plate, the two side baffles, and the first rod form a water storage area.
[0021] Through the above technical solution, when the water pipe flushes along the outlet hole, the outlet hole above the guide plate first sprays water to the water storage area. At this time, the small gap between the first corner and the guide plate ensures the water storage capacity of the water storage area. When the screen plate vibrates, the vibration of the screen plate drives the first rod to vibrate. The vibration of the first rod causes the position of the first corner to change back and forth. During this process, the gap between the first corner and the guide plate is constantly changing in size. When the first corner moves to a position higher than the guide plate, the water in the water storage area is discharged along the gap. Based on the inclined surface of the outer end face of the first rod, the water flows downward along the lower end face of the first rod. When the first rod vibrates downward, it accelerates the water flow through the gap and forms a vibrating spray effect. When the first rod vibrates upward, the water in the water storage area flows downward along the first rod to replenish the water volume on the first rod in time. When the first rod vibrates downward again, it accelerates the water flow, making the aggregate washing effect better. Furthermore, the water flow is guided by the first rod, ensuring that all stones passing under the first rod are washed by the water flow during the flattening process, resulting in a more thorough cleaning of the stones.
[0022] Optionally, the frame is further provided with a sand conveying assembly, which includes a guide cylinder, a screw conveyor, and a drive motor. The guide cylinder is connected to the bottom of the lower chamber and extends upward at an incline away from the frame. The guide cylinder has a sand outlet, the horizontal height of which is higher than that of the drain outlet. The screw conveyor is rotatably connected inside the guide cylinder, and the drive motor drives the screw conveyor to rotate, thereby conveying the sand along the guide cylinder to the sand outlet.
[0023] The above technical solution uses a sand conveying component to transport sand, reducing sand accumulation and making continuous screening more stable.
[0024] In summary, this application includes at least one of the following beneficial technical effects: (1) By spraying water onto the aggregate through the water spraying assembly, the dust raised during the vibrating screen is reduced. At the same time, the water spraying can wash and clean the sand adhering to the surface of the stone, making the separation effect of stone and sand better, reducing the sand content of the stone, and improving the quality of the reused stone. (2) By setting a limiting rod, when the aggregate passes between the screen plate and the limiting rod, a further impact effect is formed based on the difference in amplitude and frequency, making the aggregate easier to be flattened by the limiting rod, and making the aggregate flattened better and faster. (3) A water storage area is formed by the guide plate, two side baffles and the first rod. The water in the water storage area is discharged along the gap. When the first rod vibrates upward, it forms a water flow to supplement the water flow. When the first rod vibrates downward, it accelerates the water flow, resulting in a better spraying effect and better aggregate washing. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of the embodiment; Figure 2 This is a schematic diagram of the rear structure of an embodiment; Figure 3 This is a cross-sectional structural diagram of an embodiment; Figure 4 for Figure 3 Enlarged schematic diagram of part A in the middle.
[0026] Reference numerals: 1. Frame; 2. Screening chamber; 21. Upper chamber; 22. Lower chamber; 3. Screen plate; 4. Stone outlet; 5. Elastic buffer pad; 6. Vibrating motor; 8. Water spray assembly; 81. Water guide pipe; 811. Water outlet; 9. Sand conveying assembly; 91. Guide cylinder; 92. Screw conveyor rod; 93. Drive motor; 10. Drain outlet; 11. Sand outlet; 12. Guide plate; 13. Limiting rod; 131. First rod; 132. Second rod; 14. Mounting base; 15. Clearance groove; 16. Flow guide plate; 17. Side baffle. Detailed Implementation
[0027] The present application will be further described in detail below with reference to the accompanying drawings.
[0028] This application discloses a device for reusing concrete aggregates.
[0029] Example: A concrete aggregate recycling device, see Figure 1 and Figure 2The system includes a frame 1, which has a screening chamber 2. The frame 1 also has a screen plate 3, the upper surface of which has screen holes for sand to pass through while restricting the passage of stone. The screen plate 3 extends downwards at an angle along its length, with its lower end extending out of the frame 1 to form a stone outlet 4. The screen plate 3 is bolted to the frame 1, and an elastic buffer pad 5, which is made of rubber or a spring, is connected between the screen plate 3 and the frame 1.
[0030] See Figure 2 and Figure 3 The screen plate 3 is equipped with a vibration motor 6, which is located on the lower end face of the higher end of the screen plate 3 to drive the screen plate 3 to vibrate up and down. When the vibration motor 6 drives the screen plate 3 to vibrate, the vibration of the screen plate 3 is minimally transmitted to the frame 1 due to the buffering effect of the elastic buffer pad 5. Therefore, in the actual screening operation, the frame 1 is basically stationary.
[0031] See Figure 1 and Figure 3 The sieve plate 3 divides the screening chamber 2 into upper and lower sections. The upper chamber 21 is located above the sieve plate 3, and the lower chamber 22 is located below the sieve plate 3. The upper chamber 21 has a feeding port for feeding the aggregate onto the upper surface of the sieve plate 3. A water spraying assembly 8 is also provided on the frame 1. The water spraying assembly 8 is used to spray water onto the aggregate on the sieve plate 3. The water spraying assembly 8 can be multiple nozzles distributed in the upper chamber 21. In this example, the water spraying assembly 8 includes a water guide pipe 81, which is located above the sieve plate 3. The water guide pipe 81 extends along the inclined direction of the sieve plate 3, and the water guide pipe 81 has several water outlet holes 811 distributed along its length.
[0032] In actual use, the aggregate is poured onto the screen plate 3, and the water pipe 81 is connected to the water supply source. The water supply source supplies water into the water pipe 81 and sprays it out from the water outlet 811. The vibration motor 6 is started, and the vibration motor 6 drives the screen plate 3 to vibrate and screen the aggregate. The stone is discharged from the stone outlet 4 along the screen plate 3, and the sand enters the lower chamber 22 through the screen holes. The water spraying component 8 sprays water on the aggregate, which reduces the dust raised during the vibrating screen. In addition, the water spraying can wash and clean the sand adhering to the surface of the stone, reducing the amount of sand adhering to the stone and making the sand and stone separation more thorough.
[0033] To facilitate continuous and stable screening, the frame 1 is also equipped with a drain outlet 10, which is connected to the lower chamber 22. The water sprayed by the water spraying component 8 is discharged in a timely manner through the drain outlet 10. In actual use, the water discharged through the drain outlet 10 will be guided to the water storage tank, filtered, and then pumped to the water guide pipe 81, thereby realizing the recycling of water resources.
[0034] See Figure 1 and Figure 3The frame 1 is also equipped with a sand conveying assembly 9, which includes a guide cylinder 91, a screw conveyor 92, and a drive motor 93. The lower end of the guide cylinder 91 is connected to the bottom of the lower chamber 22 and extends upward at an incline away from the frame 1. The guide cylinder 91 has a sand outlet 11, which is higher than the drain outlet 10. In this example, the sand outlet 11 is located on the lower end face of the guide cylinder 91 near the higher end. The screw conveyor 92 is rotatably connected inside the guide cylinder 91, and the rotation axis of the screw conveyor is parallel to the extension direction of the guide cylinder 91. The drive motor 93 is installed at the higher end of the guide cylinder 91 and coaxially connected to the screw conveyor 92. The drive motor 93 drives the screw conveyor 92 to rotate, thereby conveying the sand along the guide cylinder 91 to the sand outlet 11 for discharge.
[0035] See Figure 1 and Figure 3 To ensure more stable screening, the frame 1 is also equipped with two guide plates 12. Both guide plates 12 are located above the screen plate 3, and are distributed one-to-one on both sides of the screen plate 3 along its inclined direction. Both guide plates 12 are inclined downwards towards each other, and a gap is left between the lower end of the guide plate 12 and the upper surface of the screen plate 3 to restrict the passage of aggregate. The two guide plates 12 form a lateral restraint, ensuring that the aggregate to be screened is contained within the area between the two guide plates 12, and that the aggregate to be screened is gradually conveyed downwards along the inclined direction of the screen plate 3 during vibration.
[0036] See Figure 2 and Figure 3 A limiting rod 13 is also provided in the upper chamber 21. The length direction of the limiting rod 13 is parallel to the upper end face of the screen plate 3 and perpendicular to the inclination direction of the screen plate 3. A gap is left between the limiting rod 13 and the screen plate 3 for the stone to pass through. The limiting rod 13 can be fixed to the frame 1. In this example, the limiting rod 13 is installed on the screen plate 3. Specifically, mounting seats 14 are fixed on both sides of the screen plate 3, and the two ends of the limiting rod 13 are fixed to the two mounting seats 14 respectively. Each guide plate 12 is provided with a clearance groove 15. The position of the clearance groove 15 is opposite to that of the limiting rod 13 to allow the limiting rod 13 to pass through. The clearance groove 15 is inclined downward toward the side where the stone outlet 4 is located and passes through the corresponding guide plate 12.
[0037] The lower part of the limiting rod 13 gradually increases in size along the inclined direction of the screen plate 3 away from the screen plate 3. There are two limiting rods 13 distributed along the inclined direction of the screen plate 3. The limiting rod 13 located near the stone outlet 4 is the first rod 131, and the other is the second rod 132. The second rod 132 is a round rod, and the first rod 131 is a square rod. The gap between the first rod 131 and the screen plate 3 is smaller than the gap between the second rod 132 and the screen plate 3. The rigidity of the limiting rod 13 is greater than that of the screen plate 3. In this application, rigidity is used to express that when the vibrating motor 6 drives the screen plate 3 to vibrate, the amplitude of the screen plate 3 is greater than the amplitude of the limiting rod 13.
[0038] In practical use, the limiting rod 13 mainly serves to block and limit the flow of aggregate. When aggregate needs to pass through, it passes through the gap between the limiting rod 13 and the screen plate 3, thus flattening the aggregate and making the rinsing of the water spray assembly 8 more thorough. The limiting rod 13 has greater rigidity than the screen plate 3, and the vibration amplitude of the screen plate 3 is greater than that of the limiting rod 13, with a frequency deviation. When the aggregate passes between the screen plate 3 and the limiting rod 13, the difference in amplitude and frequency creates an impact effect, making it easier for the limiting rod 13 to flatten the aggregate. Combined with the first rod 131 and the second rod 132, a two-stage flattening effect is formed, resulting in a better aggregate flattening effect.
[0039] See Figure 3 and Figure 4 The frame 1 is also fixed with a guide plate 16, which is located above the screen plate 3 and on the side of the first rod 131 away from the second rod 132. The guide plate 16 is inclined downward toward the first rod 131, and the inclination direction of the guide plate 16 is opposite to the inclination direction of the screen plate 3. The corner of the first rod 131 near the stone outlet 4 is called the first corner, and the lower end of the guide plate 16 extends to the height of the first corner, leaving a gap of no more than 1 mm between it and the first corner. Two side baffles 17 are also fixed on the upper surface of the guide plate 16. The two side baffles 17 are distributed one-to-one on both sides of the guide plate 16 along the length direction of the first rod 131. The guide plate 16, the two side baffles 17 and the first rod 131 form a water storage area.
[0040] The water pipe 81 extends above the guide plate 16 and also has a water outlet 811 located above the guide plate 16. When the water pipe 81 flushes by flowing water out of the water outlet 811, the water outlet 811 located above the guide plate 16 first sprays water into the water storage area. When the screen plate 3 vibrates, the vibration of the screen plate 3 drives the first rod 131 to vibrate. The vibration of the first rod 131 causes the position of the first corner to change back and forth. During this process, the gap between the first corner and the guide plate 16 is constantly changing in size. When the first corner moves to a position higher than the guide plate 16, the water in the water storage area is discharged along the gap. Based on the inclined surface of the outer end face of the first rod 131, the water flows down along the lower end face of the first rod 131. When the first rod 131 vibrates downward, it accelerates the water flow through the gap and forms a spraying effect. When the first rod 131 vibrates upward, the water in the water storage area flows down along the first rod 131 during the change in the size of the gap, which replenishes the water on the first rod 131 in time. When the first rod 131 vibrates downward again, it accelerates the water flow, making the aggregate washing effect better. Furthermore, the water flow is guided by the first rod 131, ensuring that the stones passing under the first rod 131 are washed by the water flow in time during the flattening process of the first rod 131, making the cleaning of the stones more thorough.
[0041] The working principle of this embodiment is as follows: During the vibrating screen process, water is sprayed by the water spray component 8 to wash and clean the sand adhering to the stone surface, making the sand-stone separation more thorough and improving the separation effect between stone and sand. The aggregate on the screen plate 3 is flattened when it passes through the limiting rod 13. After the aggregate is flattened, the layering of the aggregate is reduced, making the washing more comprehensive. The second rod 132 and the second rod 132 form a secondary flattening. Then, the water is guided to the first rod 131 by the guide plate 16. With the vibration of the first rod 131, the stone is further washed during the flattening process, making the tilting of the stone more thorough. Then, the stone is discharged through the stone outlet 4, and the sand is discharged through the sand conveying component 9, realizing the separation of stone and sand.
[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A concrete aggregate recycling apparatus comprising a frame (1), characterised in that: The frame (1) has a screening chamber (2), and the frame (1) is also provided with a screen plate (3). The screen plate (3) has screen holes that restrict the passage of stone. The screen plate (3) divides the screening chamber (2) into an upper chamber (21) and a lower chamber (22). The screen plate (3) is also provided with a vibration motor (6). The vibration motor (6) is configured to drive the screen plate (3) to vibrate when aggregate is placed on the screen plate (3) for vibrating the screen so that the sand passes through the screen holes and enters the lower chamber (22). The frame (1) is also provided with a water spraying assembly (8). The water spraying assembly (8) is used to spray water toward the aggregate on the screen plate (3). The frame (1) is also provided with a drain outlet (10) that communicates with the lower chamber (22).
2. The concrete aggregate recycling apparatus according to claim 1, characterized by: The screen plate (3) extends downward at an incline along its length, and the lower end of the screen plate (3) extends out of the frame (1) and forms a stone outlet (4).
3. The concrete aggregate recycling apparatus of claim 2, wherein: The water spray assembly (8) includes a water guide pipe (81) located above the sieve plate (3). The water guide pipe (81) extends along the inclined direction of the sieve plate (3). The water guide pipe (81) has a plurality of water outlet holes (811) distributed along its length. The water guide pipe (81) is used to connect to a water supply source.
4. The concrete aggregate recycling apparatus of claim 3, wherein: The upper chamber (21) is provided with a limiting rod (13), and a gap is left between the limiting rod (13) and the sieve plate (3) for the stone to pass through.
5. The concrete aggregate recycling device according to claim 4, characterized in that: The screen plate (3) is provided with mounting seats (14) on both sides. The two ends of the limiting rod (13) are fixed to the two mounting seats (14) respectively. The lower part of the limiting rod (13) gradually increases in size along the inclined direction of the screen plate (3) away from the screen plate (3). The rigidity of the limiting rod (13) is greater than that of the screen plate (3).
6. The concrete aggregate recycling device according to claim 5, characterized in that: Two limiting rods (13) are distributed along the inclined direction of the screen plate (3). The limiting rod (13) located near the stone outlet (4) is the first rod (131), and the other is the second rod (132). The second rod (132) is a round rod, and the first rod (131) is a square rod. The gap between the first rod (131) and the screen plate (3) is smaller than the gap between the second rod (132) and the screen plate (3).
7. The concrete aggregate recycling apparatus of claim 6, wherein: The frame (1) is provided with guide plates (12), which are located above the screen plate (3). There are two guide plates (12), which are distributed one-to-one on both sides of the screen plate (3) along the inclined direction. Both guide plates (12) are inclined downwards towards each other. A gap is left between the lower end of the guide plate (12) and the upper end of the screen plate (3) to restrict the passage of stones. Each guide plate (12) is provided with a relief groove (15), which is used for the limit rod (13) to pass through.
8. The concrete aggregate recycling apparatus of claim 5, wherein: The frame (1) is also provided with a guide plate (16), which is located above the screen plate (3) and on the side of the first rod (131) away from the second rod (132). The guide plate (16) is inclined downward toward the first rod (131), and the inclination direction of the guide plate (16) is opposite to the inclination direction of the screen plate (3). The angle of the first rod (131) near the stone outlet (4) is the first angle, and the lower end of the guide plate (16) extends to the height of the first angle and is aligned with the first angle. A gap of no more than 1 mm is left between the first corners. The upper end face of the guide plate (16) is provided with two side baffles (17). The two side baffles (17) are distributed one-to-one on both sides of the guide plate (16) along the length direction of the first rod (131). The water guide pipe (81) extends to the top of the guide plate (16) and has a water outlet hole (811) at the top of the guide plate (16). The guide plate (16), the two side baffles (17) and the first rod (131) form a water storage area.
9. The concrete aggregate recycling apparatus of claim 1, wherein: The frame (1) is also provided with a sand conveying assembly (9), which includes a guide cylinder (91), a screw conveyor (92) and a drive motor (93). The guide cylinder (91) is connected to the bottom of the lower chamber (22) and extends upward at an inclination away from the frame (1). The guide cylinder (91) has a sand outlet (11), and the horizontal height of the sand outlet (11) is higher than that of the drain outlet (10). The screw conveyor (92) is rotatably connected inside the guide cylinder (91). The drive motor (93) drives the screw conveyor (92) to rotate and drive the sand along the guide cylinder (91) to the sand outlet (11).