Environment-friendly residual concrete recycling equipment for civil construction

Abstract

The invention discloses environment-friendly residual concrete recycling treatment equipment for civil construction, and relates to the technical field of civil construction, the environment-friendly residual concrete recycling treatment equipment comprises a device box body, a material feeding port is formed in the upper end of the device box body, a material discharging port is formed in the bottom of the device box body, and a grinding box body is fixedly mounted in the device box body; through the synergistic effect of the crushing rollers and the conical grinding rollers which rotate in the opposite directions, efficient multi-stage treatment of residual concrete is achieved, it is ensured that large concrete blocks are rapidly crushed into uniform fragments through gear meshing transmission of the crushing rollers, and the conical grinding rollers and the grinding cavity form a gradually-changed extrusion gap during rotation to cooperate with size control of a discharging opening, so that the crushing efficiency is improved. Compared with traditional single-stage crushing equipment, the structure has the advantages that the treatment efficiency is improved by about 40%, the ground particles are better in gradation and can directly serve as recycled aggregate to be used for preparing low-grade concrete, and secondary processing energy is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering, and particularly relates to an environment-friendly residual concrete recycling and treatment device for civil engineering. Background Art

[0002] Concrete: It generally refers to an engineering composite material in which aggregate is cemented into a whole by a cementitious material. Usually, the term "concrete" refers to cement concrete, also known as ordinary concrete, which uses cement as the cementitious material, sand and stone as the aggregate; and is mixed with water (which may contain additives and admixtures) in a certain proportion and stirred. It is widely used in civil engineering. With the acceleration of the urbanization process, the amount of concrete waste generated by the construction industry increases year by year, and its recycling and treatment has become an important topic for environmental protection and resource recycling. Residual concrete mainly consists of waste concrete blocks, mortar, aggregates and hardened cement paste. If directly landfilled or stacked without treatment, it will not only occupy land, but also cause problems such as dust pollution, soil hardening and groundwater pollution.

[0003] Currently, in the actual use process of traditional residual concrete recycling and treatment equipment, most of them adopt a single crushing process (such as jaw crushing or hammer crushing). After crushing, the particle size distribution of the aggregate is uneven, and the proportion of coarse aggregate is high, making it difficult to directly use as recycled aggregate. For example, some equipment only conducts preliminary treatment through crushing rollers and does not set up a multi-stage grinding system, resulting in the residue of cement paste adhering to the surface of the recycled aggregate, affecting the strength and stability of the secondary proportioning of concrete. In view of the above problems, we propose an environment-friendly residual concrete recycling and treatment device for civil engineering. Summary of the Invention

[0004] Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the present invention provides an environment-friendly residual concrete recycling and treatment device for civil engineering, which solves the technical problems that in the actual use process of traditional residual concrete recycling and treatment equipment, most of them adopt a single crushing process (such as jaw crushing or hammer crushing), the particle size distribution of the aggregate after crushing is uneven, and the proportion of coarse aggregate is high, making it difficult to directly use as recycled aggregate.

[0006] Technical Solutions

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions:[[]]END]]

[0008] An environment-friendly residual concrete recycling and processing device for civil construction, including a device box body. A material inlet is arranged at the upper end of the device box body, and a material outlet is arranged at the bottom of the device box body. Two crushing rollers are rotatably installed in the inner cavity of the device box body. A grinding box body is arranged below the two crushing rollers, and the grinding box body is fixedly installed in the device box body. A grinding cavity is arranged in the grinding box body, and a grinding roller is arranged in the grinding cavity. The grinding roller is designed in a conical shape. A support bottom plate is arranged at the bottom end of the grinding roller. A discharge port is formed between the support bottom plate and the inner wall of the grinding cavity. Fixed blocks are fixedly connected to the support bottom plate at equal intervals in the circumferential direction, and the support bottom plate is fixedly connected to the inner wall of the grinding cavity through the fixed blocks. A motor one for driving the grinding roller to rotate is fixedly installed at the bottom end of the support bottom plate. A connecting ring is fixedly installed at the upper end of the grinding box body, and a dispersing member is arranged in the connecting ring. The grinding roller is rotatably installed between the support bottom plate and the dispersing member.

[0009] Preferably, a gear is fixedly installed at one end of each crushing roller, and the two gears are meshed with each other. A motor two is fixedly installed on the device box body, and the output shaft two of the motor two is fixedly connected to the shaft end of the crushing roller. When the motor two is started, its output shaft two drives the connected crushing roller to rotate. Since the gears at one end of the two crushing rollers are meshed with each other, the two crushing rollers will rotate towards each other to extrude and crush the incoming residual concrete, and break the larger concrete blocks into smaller blocks.

[0010] Preferably, a material guiding plate is fixedly installed in the device box body. The material guiding plate is located below the grinding box body and is inclined. Under the action of gravity, the material slides down along the material guiding plate to the material outlet at the bottom of the device box body.

[0011] Preferably, a connecting shaft is fixedly penetrated through the grinding roller, and the upper and lower ends of the connecting shaft are respectively rotatably connected to the dispersing member and the support bottom plate. The output shaft one of the motor one is fixedly connected to the bottom end of the connecting shaft.

[0012] Preferably, the dispersing member is designed in a conical shape with the tip facing upward. Four connecting vertical plates are fixedly installed between the dispersing member and the connecting ring at equal intervals in the circumferential direction. The dispersing member is designed in a conical shape with the tip facing upward, which can make the concrete blocks disperse and slide down along the conical surface under the action of gravity and evenly enter the lower grinding cavity.

[0013] Preferably, a receiving frame is fixedly installed in the device box body. The receiving frame is located below the two crushing rollers and above the connecting ring. The receiving frame is located below the two crushing rollers and above the connecting ring, ensuring a smooth transition of the material from the crushing link to the grinding link and enabling the material to accurately fall into the grinding cavity.

[0014] Beneficial effects

[0015] 1. Through the synergistic effect of the oppositely rotating crushing rollers and the conical grinding rollers, efficient multi-stage treatment of residual concrete is achieved. The gear meshing drive of the crushing rollers ensures that large pieces of concrete are quickly broken into uniform fragments, while the conical grinding rollers form a gradually changing extrusion gap with the grinding chamber during rotation. With the control of the discharge port size, the concrete can be ground into fine particles step by step (the particle size can be controlled). Compared with traditional single-stage crushing equipment, the processing efficiency of this structure is increased by about 40%, and the particle gradation after grinding is better. It can be directly used as recycled aggregate for the preparation of low-strength concrete, reducing secondary processing energy. Through the recycling treatment of residual concrete, the recycling of building materials is realized.

[0016] 2. The conical dispersing part and the connecting vertical plate structure enable the crushed materials to fall evenly into the grinding chamber, avoiding equipment jamming or uneven wear caused by local accumulation, and prolonging the service life of key components. The receiving frame is located below the two crushing rollers and above the connecting ring, ensuring a smooth transition of materials from the crushing stage to the grinding stage, enabling the materials to accurately fall into the grinding chamber, and further ensuring the stability and efficiency of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and be able to implement it according to the content of the specification, the following describes in detail with the preferred embodiments of the present invention and in conjunction with the drawings as follows.

[0018] Figure 1 is a structural diagram of the overall environmental protection type residual concrete recycling treatment equipment for civil engineering of the present invention;

[0019] Figure 2 is a structural diagram of the device box body cut open of the present invention;

[0020] Figure 3 is a structural diagram of the dispersing part of the present invention;

[0021] Figure 4 is a structural diagram of the grinding box body cut open of the present invention.

[0022] Legend: 1. Device box body; 11. Material inlet; 12. Material outlet; 13. Material guiding plate; 2. Crushing roller; 21. Gear; 3. Grinding box body; 31. Grinding chamber; 4. Grinding roller; 41. Connecting shaft; 5. Support bottom plate; 51. Motor 1; 52. Fixed block; 53. Discharge port; 6. Connecting ring; 61. Dispersing part; 62. Connecting vertical plate; 7. Motor 2; 8. Receiving frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The embodiments of the present application provide an environment-friendly residual concrete recycling and processing device for civil construction, which effectively solves the problem that in the actual use process of traditional residual concrete recycling and processing devices, most of them adopt a single crushing process (such as jaw crushing or hammer crushing), resulting in uneven particle size distribution of the crushed aggregate, a high proportion of coarse aggregate, and difficulty in directly using it as recycled aggregate. This environment-friendly residual concrete recycling and processing device for civil construction realizes the efficient multi-stage treatment of residual concrete through the synergistic effect of the oppositely rotating crushing rollers and the conical grinding rollers. The gear meshing drive of the crushing rollers ensures that large pieces of concrete are quickly crushed into uniform fragments, while the conical grinding rollers form a gradually changing extrusion gap with the grinding cavity during rotation. With the control of the size of the discharge port, the concrete can be gradually ground into fine particles (the particle size can be controlled). Compared with traditional single-stage crushing equipment, the processing efficiency of this structure is increased by about 40%, and the particle gradation after grinding is better. It can be directly used as recycled aggregate for the preparation of low-strength concrete, reducing secondary processing energy. Through the recycling and processing of residual concrete, the recycling of building materials is realized. The conical dispersion part and the connecting vertical plate structure make the crushed materials evenly fall into the grinding cavity, avoiding equipment jamming or uneven wear caused by local accumulation, and extending the service life of key components. The receiving frame is located below the two crushing rollers and above the connecting ring, ensuring a smooth transition of the material from the crushing link to the grinding link, enabling the material to accurately fall into the grinding cavity, and further ensuring the stability and efficiency of the equipment operation.

[0024] Embodiment: As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, the technical solutions in the embodiments of the present application effectively solve the technical problem that in the actual use process of traditional residual concrete recycling and processing devices, most of them adopt a single crushing process (such as jaw crushing or hammer crushing), resulting in uneven particle size distribution of the crushed aggregate, a high proportion of coarse aggregate, and difficulty in directly using it as recycled aggregate. The general idea is as follows:

[0025] In view of the problems existing in the prior art, the present invention provides an environment-friendly residual concrete recycling and treatment device for civil engineering construction, including a device box body 1. A material feeding port 11 is arranged at the upper end of the device box body 1, and a material discharging port 12 is arranged at the bottom of the device box body 1. Two crushing rollers 2 are rotatably installed in the inner cavity of the device box body 1. A grinding box body 3 is arranged below the two crushing rollers 2. The grinding box body 3 is fixedly installed in the device box body 1. A grinding cavity 31 is arranged in the grinding box body 3. A grinding roller 4 is arranged in the grinding cavity 31. The grinding roller 4 is designed in a conical shape. A support bottom plate 5 is arranged at the bottom end of the grinding roller 4. A discharge port 53 is formed between the support bottom plate 5 and the inner wall of the grinding cavity 31. Fixing blocks 52 are fixedly connected to the support bottom plate 5 at equal circumferential intervals. The support bottom plate 5 is fixedly connected to the inner wall of the grinding cavity 31 through the fixing blocks 52. A motor 51 for driving the grinding roller 4 to rotate is fixedly installed at the bottom end of the support bottom plate 5. A connecting ring 6 is fixedly installed at the upper end of the grinding box body 3. A dispersing member 61 is arranged in the connecting ring 6. The grinding roller 4 is rotatably installed between the support bottom plate 5 and the dispersing member 61. A gear 21 is fixedly installed at one end of each crushing roller 2. The two gears 21 are meshed with each other. A motor 7 is fixedly installed on the device box body 1. The output shaft two of the motor 7 is fixedly connected to the shaft end of the crushing roller 2. A material guiding plate 13 is fixedly installed in the device box body 1. The material guiding plate 13 is located below the grinding box body 3 and is inclined. A connecting shaft 41 is fixedly penetrated through the grinding roller 4. The upper and lower ends of the connecting shaft 41 are respectively rotatably connected to the dispersing member 61 and the support bottom plate 5. The output shaft one of the motor 51 is fixedly connected to the bottom end of the connecting shaft 41. The dispersing member 61 is designed in a conical shape with the tip facing upward. Four connecting vertical plates 62 are fixedly installed at equal circumferential intervals between the dispersing member 61 and the connecting ring 6. A material receiving frame 8 is fixedly installed in the device box body 1. The material receiving frame 8 is located below the two crushing rollers 2 and above the connecting ring 6;

[0026] Crushing stage: Residual concrete enters the device from the material feeding port 11 at the upper end of the device box body 1. The motor 7 is started, and its output shaft two drives the connected crushing roller 2 to rotate. Since the gears 21 at one end of the two crushing rollers 2 are meshed with each other, the two crushing rollers 2 will rotate towards each other, extruding and crushing the incoming residual concrete, and crushing the larger concrete blocks into smaller blocks;

[0027] Dispersing stage: The crushed concrete blocks fall into the material receiving frame 8 and then onto the dispersing member 61 in the connecting ring 6. The dispersing member 61 is designed in a conical shape with the tip facing upward, which can make the concrete blocks slide down along the conical surface under the action of gravity and evenly enter the lower grinding cavity 31;

[0028] Grinding stage: Motor 1 (51) starts, drives the connecting shaft 41 through the first output shaft, and then drives the grinding roller 4 to rotate. The grinding roller 4 is conical. During rotation, it grinds the concrete blocks in the grinding chamber 31 into finer particles. The ground particles are discharged through the discharge port 53 formed between the support bottom plate 5 and the inner wall of the grinding chamber 31;

[0029] Collection stage: After the fine concrete particles ground are discharged from the discharge port 53, they fall onto the material guiding plate 13 arranged obliquely, and slide down along the material guiding plate 13 under the action of gravity to the material discharge port 12 at the bottom of the device box body 1, where they can be collected to complete the recycling process of the residual concrete;

[0030] Through the coordinated action of the mutually rotating crushing rollers 2 and the conical grinding roller 4, efficient multi-stage treatment of the residual concrete is achieved. The meshing transmission of the gears 21 of the crushing rollers 2 ensures that large concrete blocks are quickly broken into uniform fragments, while the conical grinding roller 4 forms a gradually changing extrusion gap with the grinding chamber 31 during rotation. Combined with the size control of the discharge port 53, the concrete can be ground step by step into fine particles (with controllable particle size). Compared with traditional single-stage crushing equipment, the processing efficiency of this structure is increased by about 40%, and the particle size distribution of the ground particles is better, which can be directly used as recycled aggregates for the preparation of low-strength concrete, reducing the energy consumption of secondary processing.

[0031] Working principle:

[0032] Crushing stage: The residual concrete enters the equipment through the material inlet 11 at the upper end of the device box body 1. Motor 2 (7) starts, and its second output shaft drives the connected crushing rollers 2 to rotate. Since the gears 21 at one end of the two crushing rollers 2 mesh with each other, the two crushing rollers 2 rotate towards each other, squeezing and crushing the incoming residual concrete, and breaking the larger concrete blocks into smaller pieces;

[0033] Dispersion stage: The crushed concrete blocks fall into the receiving frame 8, and then onto the dispersing member 61 inside the connecting ring 6. The dispersing member 61 is designed as a cone with the tip upward, which can make the concrete blocks disperse and slide along the conical surface under the action of gravity and evenly enter the lower grinding chamber 31;

[0034] Grinding stage: Motor 1 (51) starts, drives the connecting shaft 41 through the first output shaft, and then drives the grinding roller 4 to rotate. The grinding roller 4 is conical. During rotation, it grinds the concrete blocks in the grinding chamber 31 into finer particles. The ground particles are discharged through the discharge port 53 formed between the support bottom plate 5 and the inner wall of the grinding chamber 31;

[0035] Collection stage: After the fine concrete particles after grinding are discharged from the discharge port 53, they fall on the inclined material guiding plate 13 and slide down along the material guiding plate 13 under the action of gravity to the material discharge port 12 at the bottom of the device box body 1, where collection can be carried out to complete the recovery treatment of the residual concrete;

[0036] Through the synergistic effect of the rotating counter-directionally crushing rollers 2 and the conical grinding rollers 4, the efficient multi-stage treatment of the residual concrete is realized. The meshing transmission of the gears 21 of the crushing rollers 2 ensures that large pieces of concrete are quickly broken into uniform fragments, and the conical grinding rollers 4 form a gradually changing extrusion gap with the grinding cavity 31 during rotation. With the size control of the discharge port 53, the concrete can be gradually ground into fine particles (with controllable particle size). Compared with traditional single-stage crushing equipment, the processing efficiency of this structure is increased by about 40%, and the particle size distribution of the ground particles is better, which can be directly used as recycled aggregate for the preparation of low-grade concrete, reducing the energy consumption of secondary processing.

[0037] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An environmentally friendly residual concrete recycling and processing device for civil engineering, comprising a device box (1), wherein the upper end of the device box (1) is provided with a material feed port (11), and the bottom of the device box (1) is provided with a material discharge port (12), characterized in that: Two crushing rollers (2) are rotatably mounted in the inner cavity of the device housing (1); a grinding housing (3) is disposed below the two crushing rollers (2); and the grinding housing (3) is fixedly mounted in the device housing (1); The grinding box (3) is provided with a grinding chamber (31), the grinding chamber (31) is provided with a grinding roller (4), the grinding roller (4) is of conical design, a supporting base plate (5) is provided at the bottom end of the grinding roller (4), a discharge port (53) is formed between the supporting base plate (5) and the inner wall of the grinding chamber (31), a fixing block (52) is fixedly connected to the upper circumference of the supporting base plate (5) at equal intervals, the supporting base plate (5) is fixedly connected to the inner wall of the grinding chamber (31) through the fixing block (52), and a motor (51) for driving the grinding roller (4) to rotate is fixedly installed at the bottom end of the supporting base plate (5); Wherein, a connecting ring (6) is fixedly mounted on the upper end of the grinding box (3), a dispersing member (61) is arranged inside the connecting ring (6), and the grinding roller (4) is rotatably mounted between the supporting bottom plate (5) and the dispersing member (61).

2. The environmentally friendly residual concrete recycling and processing equipment for civil engineering and construction according to claim 1 is characterized by: A gear (21) is fixedly mounted on one end of each crushing roller (2), the two gears (21) are meshed with each other, and a second motor (7) is fixedly mounted on the device housing (1); Wherein, the output shaft 2 of the motor 2 (7) is fixedly connected to the shaft end of the crushing roller (2).

3. The environmentally friendly residual concrete recycling and processing equipment for civil engineering and construction according to claim 1 is characterized by: A material-smoothing plate (13) is fixedly installed in the device housing (1); the material-smoothing plate (13) is located below the grinding housing (3) and is arranged in an inclined manner.

4. The environmentally friendly residual concrete recycling and processing equipment for civil engineering and construction according to claim 1 is characterized by: A connecting shaft (41) is fixedly inserted into the grinding roller (4), and the upper and lower ends of the connecting shaft (41) are rotatably connected to the dispersion member (61) and the supporting bottom plate (5) respectively; Wherein, the output shaft 1 of the motor 1 (51) is fixedly connected to the bottom end of the connecting shaft (41).

5. The environmentally friendly residual concrete recycling and processing equipment for civil engineering and construction according to claim 1 is characterized by: The dispersion element (61) is designed to be conical, with the tip facing upward.

6. The environmentally friendly residual concrete recycling and processing equipment for civil engineering and construction according to claim 5 is characterized by: Four connecting vertical plates (62) are fixedly installed at equal intervals around the circumference between the dispersing member (61) and the connecting circular ring (6).

7. The environmentally friendly residual concrete recycling and processing equipment for civil engineering and construction according to claim 1 is characterized by: A material receiving frame (8) is fixedly installed in the device box (1).

8. The environmentally friendly residual concrete recycling and processing equipment for civil engineering and construction according to claim 7 is characterized by: The material receiving frame (8) is located below the two crushing rollers (2) and above the connecting ring (6).

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