Efficient sorting method for recycled concrete aggregate

Abstract

The invention discloses an efficient sorting method for recycled concrete aggregate, an aggregate sorting device is adopted, the aggregate sorting device comprises a first-stage screening mechanism, a second-stage screening mechanism and a third-stage screening mechanism, and the treatment process comprises the steps that to-be-treated materials are screened through the first-stage screening mechanism of the aggregate sorting device; oversize products screened out by the first-stage screening mechanism are screened through a second-stage screening mechanism; and the oversize product screened out by the second-stage screening mechanism is screened out by the third-stage screening mechanism, so that coarse aggregate and fine aggregate are screened out. The coarse aggregate and the fine aggregate are accurately separated in the concrete regeneration process, and the mix proportion of the regenerated concrete is accurate.

Description

Technical Field

[0001] The present invention relates to the field of recycled concrete, and more specifically, to a method for efficiently sorting recycled concrete aggregate. Background Art

[0002] With the development of the construction industry, more and more early building structures need to be renovated and rebuilt, and at the same time, a large amount of construction waste has been derived, among which concrete structure construction waste is the most common. At present, the recycling of concrete construction waste is mostly crushed and filtered, and then directly put into the new concrete production line. Due to the certainty of its components, the aggregate mix ratio in the concrete cannot be accurately controlled, which is an important factor leading to the substandard strength of recycled concrete. Therefore, it is urgent to propose a screening device that can quickly separate coarse aggregate and fine aggregate for concrete recycling. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a method for efficiently sorting recycled concrete aggregates, which can achieve accurate separation of coarse and fine aggregates during concrete regeneration and achieve precise mix ratio of recycled concrete.

[0004] The technical solution adopted by the present invention to solve this technical problem is: a method for efficiently sorting recycled concrete aggregates, using an aggregate sorting device, which includes a primary screening mechanism, a secondary screening mechanism and a tertiary screening mechanism, and the processing flow includes: The material to be processed is screened through the primary screening mechanism of the aggregate sorting device; The oversize material screened out by the primary screening mechanism is screened by the secondary screening mechanism; The oversize material screened out by the secondary screening mechanism is screened through the tertiary screening mechanism to screen out coarse aggregate and fine aggregate.

[0005] As a further solution of the present invention, the aggregate sorting device further comprises a shell, and the primary screening mechanism, the secondary screening mechanism and the tertiary screening mechanism are sequentially installed in the shell from top to bottom.

[0006] As a further solution of the present invention, the primary screening mechanism comprises a feed hopper, an inclined vibrating screen 1, a material collecting trough 1 and a crushing mechanism; the inclined vibrating screen 1 is located below the discharge port of the feed hopper, and the material collecting trough 1 is obliquely arranged below the screen of the inclined vibrating screen 1, for collecting the screened material and discharging it; The structure of the secondary screening mechanism is the same as that of the primary screening mechanism. The feed port of the feed hopper of the secondary screening mechanism is located directly below the crushing mechanism of the primary screening mechanism, and is used to collect the crushed recycled concrete material. The three-stage screening mechanism comprises a feed hopper, an inclined vibrating screen 1, an inclined vibrating screen 2, an inclined vibrating screen 3, a collecting trough 1, a collecting trough 2, a collecting trough 3, a collecting trough 4 and a crushing mechanism; the feed port of the feed hopper of the three-stage screening mechanism is located directly below the crushing mechanism of the two-stage screening mechanism, and is used to collect the crushed recycled concrete material; the discharge port of the feed hopper of the three-stage screening mechanism is located directly above the inclined vibrating screen 1; the underscreen material of the inclined vibrating screen 1 is collected and discharged through the inclined collecting trough 1; the overscreen material of the inclined vibrating screen 1 enters the crushing mechanism of the three-stage screening mechanism, is crushed by the crushing mechanism of the three-stage screening mechanism, and is poured into the inclined vibrating screen 2 for screening; the overscreen material of the inclined vibrating screen 2 is collected for coarse aggregate through the collecting trough 2; the underscreen material of the inclined vibrating screen 2 enters the inclined vibrating screen 3; the overscreen material of the inclined vibrating screen 3 is collected for fine aggregate through the collecting trough 3; and the underscreen material of the inclined vibrating screen 3 is collected for recycled concrete material through the collecting trough 4.

[0007] As a further solution of the present invention, the recycled concrete materials collected by the first and fourth collecting troughs are mixed and collected.

[0008] As a further solution of the present invention, a frame is installed in the shell; the crushing mechanism includes a crushing head assembly and a crushing slot assembly; The crushing head assembly comprises a crushing head and a driving device 1; the crushing head is composed of a shaft and a semicircular rolling head installed at the end of the shaft; the driving device 1 drives the crushing head to move up and down, and the driving device 1 is installed on the frame; The crushing trough assembly comprises a crushing trough and a second driving device; the crushing trough is a bowl-shaped structure, and the second driving device drives the crushing trough opening to face upward / downward.

[0009] As a further solution of the present invention, a plurality of hemispherical protrusions are arranged on the inner wall surface of the crushing groove in a matrix shape; and a plurality of grooves are arranged along the arc surface of the rolling head.

[0010] As a further solution of the present invention, the second driving device comprises a pair of connecting shafts, bearings and a motor; The two ends of the crushing trough are supported and supported with connecting shafts, one end of the connecting shaft is installed on the frame through a bearing, and the other end of the connecting shaft is driven to rotate by a motor, and the motor is installed on the frame through a motor base.

[0011] As a further solution of the present invention, it also includes a controller, and the controller is connected with the inclined vibrating screen 1, the inclined vibrating screen 2, the inclined vibrating screen 3, the driving device 1, and the driving device 2.

[0012] As a further solution of the present invention, the mesh aperture of the inclined vibrating screen 1 of the primary screening mechanism and the secondary screening mechanism is set to be smaller than the particle size of the fine aggregate.

[0013] The present invention includes at least the following beneficial effects: The efficient sorting method of recycled concrete aggregates consists of primary crushing, primary screening, secondary crushing, secondary screening, tertiary crushing, and tertiary screening. Multi-stage crushing and screening can peel off the recycled concrete layer by layer, peel off the aggregate from the concrete, and finally achieve the separation of coarse and fine aggregates of the recycled concrete. While reducing costs, the aggregates can be quickly separated, the mix ratio can be accurately controlled during the regeneration process, and the strength of the recycled concrete can be improved. The method of the present application has a good separation effect, and the fine separation of coarse aggregate and fine aggregate can be achieved through multi-stage filtration and screening; the separation time is shortened, and the separation is fully automated without the need for manual adjustment; the applicability is strong, and the present invention can be replaced by different crushing head components and crushing trough components to achieve aggregate stripping under different particle sizes.

[0014] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the aggregate sorting device of the present invention; Figure 2 It is a structural schematic diagram of the crushing mechanism of the present invention; Figure 3 It is a schematic diagram of the inner wall of the crushing tank of the present invention.

[0016] Among them, 1-primary screening mechanism, 2-secondary screening mechanism, 3-tertiary screening mechanism, 4-feeding hopper, 5-inclined vibrating screen one, 6-receiving trough one, 7-crushing mechanism, 8-receiving trough two, 9-receiving trough three, 10-receiving trough four, 11-frame, 12-crushing head, 13-driving device one, 14-crushing trough, 15-hemispherical protrusion, 16-groove, 17-connecting shaft, 18-bearing, 19-motor. DETAILED DESCRIPTION

[0017] The present invention is described in detail and completely below in conjunction with the accompanying drawings. A person of ordinary skill in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly pointed out that the technical solutions and technical features provided in each part of the present invention, including the following description, can be combined with each other without conflict.

[0018] In addition, the embodiments of the present invention involved in the following description are generally only a part of the embodiments of the present invention, rather than all the embodiments. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and implementations, and its specific implementation process is as follows: like Figures 1 to 3 As shown, the present invention provides a method for efficiently sorting recycled concrete aggregates, using an aggregate sorting device, which includes a primary screening mechanism 1, a secondary screening mechanism 2 and a tertiary screening mechanism 3, and the processing flow includes: The material to be processed is screened through the primary screening mechanism 1 of the aggregate sorting device; The material on the screen screened by the primary screening mechanism 1 is screened by the secondary screening mechanism 2; The oversize material screened out by the secondary screening mechanism 2 is screened by the tertiary screening mechanism 3, thereby screening out the coarse aggregate and the fine aggregate.

[0020] The present technical solution may also include the following technical details to better achieve the technical effect: the aggregate sorting device also includes a shell, and the primary screening mechanism 1, the secondary screening mechanism 2 and the tertiary screening mechanism 3 are sequentially installed in the shell from top to bottom.

[0021] The technical solution may also include the following technical details to better achieve the technical effect: the primary screening mechanism 1 includes a feed hopper 4, an inclined vibrating screen 5, a material receiving trough 6 and a crushing mechanism 7; the inclined vibrating screen 5 is located below the discharge port of the feed hopper 4, and the material receiving trough 6 is obliquely arranged below the screen of the inclined vibrating screen 5 to collect the screened material and discharge it; The structure of the secondary screening mechanism 2 is the same as that of the primary screening mechanism 1. The feed port of the feed hopper 4 of the secondary screening mechanism 2 is located directly below the crushing mechanism 7 of the primary screening mechanism 1, and is used to collect the crushed recycled concrete material. The three-stage screening mechanism 3 comprises a feed hopper 4, an inclined vibrating screen 1 5, an inclined vibrating screen 2, an inclined vibrating screen 3, a collecting trough 1 6, a collecting trough 2 8, a collecting trough 3 9, a collecting trough 4 10 and a crushing mechanism 7; the feed port of the feed hopper 4 of the three-stage screening mechanism 3 is located directly below the crushing mechanism 7 of the two-stage screening mechanism 2, and is used to collect the crushed recycled concrete material; the discharge port of the feed hopper 4 of the three-stage screening mechanism 3 is located directly above the inclined vibrating screen 1 5, and the screened material of the inclined vibrating screen 1 5 is discharged through the inclined device The material on the screen of the inclined vibrating screen 1 enters the crushing mechanism 7 of the tertiary screening mechanism 3, and after being crushed by the crushing mechanism 7 of the tertiary screening mechanism 3, it is poured into the inclined vibrating screen 2 for screening, and the material on the screen of the inclined vibrating screen 2 is collected as coarse aggregate through the material collecting trough 2 8, and the material under the screen of the inclined vibrating screen 2 enters the inclined vibrating screen 3, and the material on the screen of the inclined vibrating screen 3 is collected as fine aggregate through the material collecting trough 3 9, and the material under the screen of the inclined vibrating screen 3 is collected as recycled concrete material through the material collecting trough 4 10.

[0022] The technical solution may also include the following technical details to better achieve the technical effect: the recycled concrete materials collected by the collecting trough 1 6 and the collecting trough 4 10 are mixed and collected.

[0023] The technical solution may also include the following technical details to better achieve the technical effect: a frame 11 is installed in the shell; the crushing mechanism 7 includes a crushing head 12 component and a crushing slot 14 component; The crushing head 12 assembly includes a crushing head 12 and a driving device 13; the crushing head 12 is composed of a shaft and a semicircular rolling head installed at the end of the shaft; the driving device 13 drives the crushing head 12 to move up and down, and the driving device 13 is installed on the frame 11; The crushing trough 14 assembly includes a crushing trough 14 and a second driving device; the crushing trough 14 is a bowl-shaped structure, and the second driving device drives the crushing trough 14 to open upward / downward.

[0024] The present technical solution may also include the following technical details to better achieve the technical effect: the inner wall surface of the crushing groove 14 is provided with a plurality of hemispherical protrusions 15 in a matrix shape; the rolling head is provided with a plurality of grooves 16 along its arc surface, and the size of the grooves 16 is set so that most of the aggregates can be stuck in the grooves 16.

[0025] The recycled cement is irregularly crushed during the crushing process. During the crushing process, the aggregate particle size is larger than the particle size of other materials of the recycled cement. The aggregate as a large particle size is stuck in the groove 16 of the rolling head piece by piece, while the other materials after the cement is crushed have a small particle size and will fall from the groove 16, so that the other materials of the recycled cement can be better crushed by the hemispherical protrusion 15.

[0026] This technical solution may also include the following technical details to better achieve the technical effect: the second driving device includes a pair of connecting shafts 17, bearings 18 and a motor 19; The two ends of the crushing trough 14 are supported and supported with connecting shafts 17, one end of the connecting shaft 17 is installed on the frame 11 through a bearing 18, and the other end of the connecting shaft 17 is driven to rotate by a motor 19, and the motor 19 is installed on the frame 11 through a motor 19 base. The motor 19 drives the connecting shaft 17 to rotate, thereby driving the crushing trough 14 to rotate, so as to pour out the crushed recycled concrete material.

[0027] The present technical solution may also include the following technical details to better achieve the technical effect: it also includes a controller, and the controller is connected to the inclined vibrating screen 1 5, the inclined vibrating screen 2, the inclined vibrating screen 3, the driving device 1 13, and the driving device 2.

[0028] The present technical solution may also include the following technical details to better achieve the technical effect: the mesh aperture of the inclined vibrating screen 5 of the primary screening mechanism 1 and the secondary screening mechanism 2 is set to be smaller than the particle size of the fine aggregate, ensuring that the screened material of the inclined vibrating screen 5 of the secondary screening mechanism 2 is other materials of recycled concrete.

[0029] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the embodiments shown and described herein.

Claims

1. A method for efficiently sorting recycled concrete aggregates, using an aggregate sorting device, which includes a primary screening mechanism, a secondary screening mechanism and a tertiary screening mechanism, characterized in that: The processing flow includes: The material to be processed is screened through the primary screening mechanism of the aggregate sorting device; The oversize material screened out by the primary screening mechanism is screened by the secondary screening mechanism; The oversize material screened out by the secondary screening mechanism is screened through the tertiary screening mechanism to screen out coarse aggregate and fine aggregate.

2. The method for efficiently sorting recycled concrete aggregate according to claim 1, characterized in that: The aggregate sorting device also includes a shell, and the primary screening mechanism, the secondary screening mechanism and the tertiary screening mechanism are installed in the shell in sequence from top to bottom.

3. The method for efficiently sorting recycled concrete aggregate according to claim 2, characterized in that: The primary screening mechanism includes a feed hopper, an inclined vibrating screen 1, a material receiving trough 1 and a crushing mechanism; the inclined vibrating screen 1 is located below the discharge port of the feed hopper, and the material receiving trough 1 is obliquely arranged below the screen of the inclined vibrating screen 1, for collecting the screened material and discharging it; The structure of the secondary screening mechanism is the same as that of the primary screening mechanism. The feed port of the feed hopper of the secondary screening mechanism is located directly below the crushing mechanism of the primary screening mechanism, and is used to collect the crushed recycled concrete material. The three-stage screening mechanism comprises a feed hopper, an inclined vibrating screen 1, an inclined vibrating screen 2, an inclined vibrating screen 3, a collecting trough 1, a collecting trough 2, a collecting trough 3, a collecting trough 4 and a crushing mechanism; the feed port of the feed hopper of the three-stage screening mechanism is located directly below the crushing mechanism of the two-stage screening mechanism, and is used to collect the crushed recycled concrete material; the discharge port of the feed hopper of the three-stage screening mechanism is located directly above the inclined vibrating screen 1; the underscreen material of the inclined vibrating screen 1 is collected and discharged through the inclined collecting trough 1; the overscreen material of the inclined vibrating screen 1 enters the crushing mechanism of the three-stage screening mechanism, is crushed by the crushing mechanism of the three-stage screening mechanism, and is poured into the inclined vibrating screen 2 for screening; the overscreen material of the inclined vibrating screen 2 is collected for coarse aggregate through the collecting trough 2; the underscreen material of the inclined vibrating screen 2 enters the inclined vibrating screen 3; the overscreen material of the inclined vibrating screen 3 is collected for fine aggregate through the collecting trough 3; and the underscreen material of the inclined vibrating screen 3 is collected for recycled concrete material through the collecting trough 4.

4. The method for efficiently sorting recycled concrete aggregate according to claim 3, characterized in that: The recycled concrete materials collected by the first and fourth collecting troughs are mixed and collected.

5. The method for efficiently sorting recycled concrete aggregate according to claim 3, characterized in that: A frame is installed in the shell; the crushing mechanism includes a crushing head assembly and a crushing slot assembly; The crushing head assembly comprises a crushing head and a driving device 1; the crushing head is composed of a shaft and a semicircular rolling head installed at the end of the shaft; the driving device 1 drives the crushing head to move up and down, and the driving device 1 is installed on the frame; The crushing trough assembly comprises a crushing trough and a second driving device; the crushing trough is a bowl-shaped structure, and the second driving device drives the crushing trough opening to face upward / downward.

6. The method for efficiently sorting recycled concrete aggregate according to claim 5, characterized in that: The inner wall surface of the crushing groove is provided with a plurality of hemispherical protrusions in a matrix shape; and the rolling head is provided with a plurality of grooves along its arc surface.

7. The method for efficiently sorting recycled concrete aggregate according to claim 6, characterized in that: The second driving device comprises a pair of connecting shafts, bearings and a motor; The two ends of the crushing trough are supported and supported with connecting shafts, one end of the connecting shaft is installed on the frame through a bearing, and the other end of the connecting shaft is driven to rotate by a motor, and the motor is installed on the frame through a motor base.

8. The method for efficiently sorting recycled concrete aggregate according to claim 7, characterized in that: It also includes a controller, which is connected to the inclined vibrating screen 1, the inclined vibrating screen 2, the inclined vibrating screen 3, the driving device 1, and the driving device 2.

9. The method for efficiently sorting recycled concrete aggregate according to claim 8, characterized in that: The mesh aperture of the inclined vibrating screen 1 of the primary screening mechanism and the secondary screening mechanism is set to be smaller than the particle size of the fine aggregate.

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