Device for preparing recycled aggregate by using construction waste

Abstract

The utility model relates to the technical field of construction waste recovery, and discloses a device for preparing recycled aggregate by using construction waste, which comprises a feeder B, a color sorter, a pure concrete bin, a pure brick bin, an aggregate crusher, a concrete finished product bin and a brick finished product bin, a discharge port of the feeder B is connected with a feed port of the color sorter, the color sorter is provided with two discharge ports, the two discharge ports are respectively connected with feed ports of the pure concrete bin and the pure brick bin, the pure concrete bin is connected with the concrete finished product bin through one aggregate crusher, and the pure brick bin is connected with the brick finished product bin through the other aggregate crusher. The problems that in the prior art, construction waste composed of different materials is directly crushed, mixed aggregate is obtained, the strength of the mixed aggregate is low, the mixed aggregate can only be applied to road foundations, and the mechanical property of the aggregate is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction waste recycling, in particular to a device for preparing recycled aggregate by using construction waste. Background Technique

[0002] The statements herein only provide the background technique related to the utility model and do not necessarily constitute the prior art.

[0003] Construction waste refers to the waste materials generated during construction, demolition, maintenance, renovation and decoration processes, including but not limited to waste concrete, bricks, wood, metal, glass, plastic, stone, soil, sand, asphalt, insulation materials, heat insulation materials and various building decoration materials, etc. These waste materials come from the demolition of building structures, the surplus of building materials, the by-products during the construction process and the renovation of old buildings. The formation of construction waste is an inevitable by-product of construction activities, posing important challenges to environmental and urban management in terms of treatment and resource recycling.

[0004] In the process of urbanization, a large number of demolition projects have led to the generation of a large amount of construction waste, which is mainly composed of waste bricks and concrete. After simple impurity removal, the construction waste is often broken as a whole. For example, CN115231861 B discloses a method for preparing recycled aggregate concrete by using construction waste. After removing substances such as wood, plastic, and metal from the construction waste, it is directly broken and washed with water. The slurry after washing is air-dried to obtain powder, and the large construction waste particles are broken again to obtain aggregate. This technical solution ignores the different strengths of brick aggregate and concrete aggregate, mixes bricks and concrete together for crushing to obtain mixed aggregate, and the strength of the mixed aggregate is low, which can only be applied to subgrade construction with lower strength requirements and has few application scenarios. At the same time, washing with water also causes a large waste of water resources and is not conducive to energy conservation and consumption reduction. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the embodiment of the utility model is to provide a device for preparing recycled aggregate by using construction waste, which at least solves the problem that the prior art directly crushes the mixed construction waste to obtain a mixed aggregate doped with different materials, and the strength of the mixed aggregate doped with different materials is low.

[0006] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solution:

[0007] A device for preparing recycled aggregate by using construction waste includes: a feeding machine B, a color sorter, a pure concrete bin, a pure brick bin, an aggregate crusher, a concrete finished product bin and a brick finished product bin;

[0008] The discharge port of feeder B is connected to the feed port of the color sorter. The color sorter is provided with two discharge ports, which are respectively connected to the feed ports of the pure concrete silo and the pure brick silo. The pure concrete silo is connected to the concrete finished product silo through an aggregate crusher, and the pure brick silo is connected to the brick finished product silo through another aggregate crusher.

[0009] In the present utility model, the color sorter separates bricks and concrete blocks in construction waste, breaks them separately, and obtains aggregates of brick materials and aggregates of concrete materials respectively, so as to separate the aggregates of the two different materials. The strength of the concrete aggregates is high, and the strength of the brick material aggregates is low, which can be respectively applied to construction scenarios with different strength requirements, improving the utilization efficiency of recycled aggregates.

[0010] In some embodiments, it further includes feeder A and feeder C. The discharge port of feeder A is connected to the pure concrete silo, and the discharge port of feeder C is connected to the pure brick silo.

[0011] Multiple feeders are set up to feed the mixed waste of concrete, bricks and concrete bricks through separate channels. When it is only concrete or bricks, the construction waste directly enters the corresponding temporary storage silo without being sorted by the color sorter, which not only improves the working efficiency of the equipment but also reduces the energy consumption of the device.

[0012] In some embodiments, a rotor crusher is further provided between feeder B and the color sorter.

[0013] In some embodiments, wet separators are provided between feeder A and the pure concrete silo, between the rotor crusher and the color sorter, and between feeder C and the pure brick silo. Through the wet separator, wood, plastics, etc. in the construction waste are removed, and the remaining construction waste enters the downstream devices.

[0014] In some embodiments, the aggregate crusher includes a coarse crusher and a medium crusher.

[0015] In some embodiments, the pure concrete silo is connected to the coarse crusher, the coarse crusher is connected to the medium crusher, and the medium crusher is connected to the concrete finished product silo; the pure brick silo is also connected to the brick finished product silo through the coarse crusher and the medium crusher in sequence.

[0016] In some embodiments, magnetic separators are provided between the medium crusher and the concrete finished product silo, and between the medium crusher and the brick finished product silo, for removing metal impurities in the aggregates.

[0017] In some embodiments, a screening device is provided between the magnetic separator and the concrete finished product silo.

[0018] In some embodiments, a screening device is provided between the magnetic separator and the brick finished product silo.

[0019] In some embodiments, the primary crusher is a jaw crusher, the intermediate crusher is a hammer crusher, and the screening device is a specific gravity screen.

[0020] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0021] 1. By setting up a color sorter, the present invention separates bricks and concrete in construction waste, crushes them separately to obtain brick aggregates and concrete aggregates. The strengths of the two aggregates are different and are respectively applied to construction scenarios with different strength requirements. For example, concrete aggregates can be used in load-bearing structures, and brick aggregates can be used as decorative surface aggregates. The process of using construction waste to produce aggregates by this device is simple, and the obtained aggregates have uniform quality, improving the application scenarios and utilization efficiency of recycled aggregates.

[0022] 2. The present invention is provided with multiple feeders, which are designed with different separation methods corresponding to different structures and different sources of construction waste (pure concrete, brick-concrete mixture, pure brick). The mixed waste of concrete, bricks, and brick-concrete is fed through different channels. When it is only concrete or bricks, the construction waste is directly fed into the corresponding temporary storage bin after removing impurities through a wet separator without the need for a color sorter for separation. This not only improves the working efficiency of the equipment but also reduces the energy consumption of the device.

[0023] 3. The present invention transports construction waste to a pure concrete bin and a pure brick bin respectively, and through primary crushing, intermediate crushing, and screening devices, aggregates with different particle sizes are formed, realizing the whole-process production of a wide range of construction waste from impurity removal and separation to brick-concrete separation and aggregate crushing, obtaining brick aggregates and concrete aggregates, which are respectively applied to construction scenarios with different strength requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings forming a part of this specification are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0025] Figure 1 is a schematic diagram of the device for preparing recycled aggregates provided by the embodiments of the present invention;

[0026] Figure 2 is a schematic diagram of the working process of the device for preparing recycled aggregates provided by the embodiments of the present invention;

[0027] In the figure: 1-1, Feeding Machine A1-1; 1-2, Feeding Machine B; 1-3, Feeding Machine C; 2, Rotor Crusher; 3-1, Wet Separator A; 3-2, Wet Separator B; 3-3, Wet Separator C; 4, Color Sorter; 5, Pure Concrete Silo; 6, Pure Brick Silo; 7-1, Coarse Crusher A; 7-2, Coarse Crusher B; 8-1, Medium Crusher A; 8-2, Medium Crusher B; 9-1, Magnetic Separator A; 9-2, Magnetic Separator B; 10-1, Screening Device A; 10-2, Screening Device B; 11, Concrete Finished Product Silo; 12, Brick Finished Product Silo.

[0028] The distances or dimensions between each part are exaggerated for showing the positions of each part, and the schematic diagram is only for illustration. Detailed Implementation Manner

[0029] It should be noted that the following detailed description is exemplary and is intended to provide further illustration of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0030] As introduced in the background art, in the prior art, construction waste composed of different materials (such as bricks and concrete) is often not separated and directly mixed and crushed to obtain a mixed aggregate including two materials of bricks and concrete. The strength of the mixed aggregate is low, which reduces the strength of the concrete aggregate and the mechanical properties of the aggregate. The obtained mixed aggregate can only be applied to highway foundations. To solve the above technical problems, the present utility model proposes a device for preparing recycled aggregate from construction waste.

[0031] As Figure 1 shown, an embodiment of the present utility model discloses a device for preparing recycled aggregate from construction waste, which includes a feeding machine, a color sorter 4, a pure concrete silo 5, a pure brick silo 6, an aggregate crusher, a concrete finished product silo 11 and a brick finished product silo 12. The feeding machine includes a feeding machine B1-2. The discharge port of the feeding machine B1-2 is connected to the feed port of the color sorter 4. The color sorter 4 is provided with two discharge ports, and the two discharge ports are respectively connected to the feed ports of the pure concrete silo 5 and the pure brick silo 6. The pure concrete silo 5 is connected to the concrete finished product silo 11 through an aggregate crusher, and the pure brick silo 6 is connected to the brick finished product silo 12 through another aggregate crusher. The color sorter 4 separates the bricks and concrete blocks in the construction waste by color recognition, and then transports the bricks and concrete blocks to the pure concrete silo 5 or the pure brick silo 6 respectively, and crushes them through the aggregate crusher respectively to obtain different recycled aggregates, which can be applied to construction scenarios with different strength requirements according to actual needs, improving the utilization rate of the recycled aggregate. Separating the bricks and concrete blocks in the construction waste by the color sorter 4 is the prior art.

[0032] In an alternative embodiment, the feeder also includes a feeder A1-1 and a feeder C1-3. The discharge port of the feeder A1-1 is connected to the pure concrete silo 5, and the discharge port of the feeder C1-3 is connected to the pure brick silo 6. The feed inlet of the feeder A1-1 receives concrete block construction waste, the feeder C1-3 receives brick construction waste, and the feeder B1-2 receives mixed construction waste of bricks and concrete blocks. The mixed waste of concrete, bricks, and concrete bricks is fed through separate channels. When it is only concrete or bricks, the construction waste does not need to be sorted by the color sorter 4, which improves the working efficiency of the equipment and reduces the energy consumption of the device.

[0033] In an alternative embodiment, the discharge port of the feeder B1-2 is connected to the feed inlet of the rotor crusher 2, the discharge port of the rotor crusher 2 is connected to the feed inlet of the wet separator B 3-2, and the discharge port of the wet separator B 3-2 is connected to the feed inlet of the color sorter 4.

[0034] In an alternative embodiment, the discharge port of the feeder A1-1 is connected to the feed inlet of the wet separator A3-1, and the discharge port of the wet separator A3-1 is connected to the feed inlet of the pure concrete silo 5. The concrete construction waste received by the feeder A1-1 removes impurities such as plastics and wood in the construction waste through the wet separator A3-1, and the concrete blocks continue to be transported and enter the downstream pure concrete silo 5 for subsequent processing.

[0035] In an alternative embodiment, the discharge port of the feeder C1-3 is connected to the feed inlet of the wet separator C 3-3, and the discharge port of the wet separator C 3-3 is connected to the pure brick silo 6. The brick construction waste received by the feeder C1-3 removes impurities and enters downstream processing.

[0036] In an alternative embodiment, the aggregate crusher is a coarse crusher and a medium crusher. The coarse crusher is a jaw crusher, and the medium crusher is a hammer crusher.

[0037] In an alternative embodiment, the discharge port of the pure concrete silo 5 is connected to the feed inlet of the coarse crusher A7-1, the discharge port of the coarse crusher A 7-1 is connected to the feed inlet of the medium crusher A 8-1, and the discharge port of the medium crusher A 8-1 is connected to the feed inlet of the concrete finished product silo 11; the discharge port of the pure brick silo 6 is connected to the feed inlet of the coarse crusher B 7-2, the discharge port of the coarse crusher B 7-2 is connected to the feed inlet of the medium crusher B 8-2, and the discharge port of the medium crusher B 8-2 is connected to the feed inlet of the concrete finished product silo 11. The construction waste in the pure concrete silo 5 or the pure brick silo 6 is crushed by the crusher, impurities are removed, and then screened to obtain aggregates of different particle sizes.

[0038] In an alternative embodiment, the medium crusher A8-1 is connected to the magnetic separator A 9-1, the magnetic separator A 9-1 is connected to the screening device A10-1, and the screening device A10-1 is connected to the concrete finished product silo 11; the medium crusher B 8-2 is connected to the magnetic separator B 9-2, the magnetic separator B 9-2 is connected to the screening device B10-2, and the screening device B10-2 is connected to the brick finished product silo 12. Metal impurities in the crushed aggregate are removed by the magnetic separator, and then the aggregate is classified according to particle size by the screening device to obtain different particle sizes of 0-5 mm, 5 mm-10 mm, 10 mm-20 mm, and 20 mm-40 mm respectively. The structure and screening principle of the screening device are prior art, and different screening devices can be selected according to needs. The preferred embodiment of the present utility model is a specific gravity screening machine. Inside the screening area, materials of different particle sizes are subject to different gravitational accelerations and centrifugal forces, causing the materials of different particle sizes to have different rising and falling speeds, thereby realizing the classification of the materials. The structure and screening principle of the specific gravity screening machine are prior art and will not be elaborated herein; the magnetic separator is used to remove metal impurities in the aggregate.

[0039] In an alternative embodiment, both the concrete finished product silo 11 and the brick finished product silo 12 are provided with at least 4 partition bins for receiving aggregates of different particle sizes.

[0040] In an alternative embodiment, the primary crusher is a jaw crusher and the medium crusher is a hammer crusher.

[0041] As Figure 2 shown, when the device is in use, the process is as follows:

[0042] 1. Classify the construction waste sources into three categories. The first category is concrete construction waste, the second category is brick-concrete mixed construction waste, and the third category is brick construction waste. Put the first category of concrete construction waste into the feeder A1-1, put the second category of brick-concrete combined construction waste into the feeder B1-2, and put the third category of brick construction waste into the feeder C1-3.

[0043] 2. The first category of concrete construction waste conveyed by the feeder A1-1 is passed through the wet separator A 3-1 to remove impurities such as wood and plastic, and then transported to the pure concrete silo 5; the second category of brick-concrete combined construction waste conveyed by the feeder B1-2 enters the rotor crusher 2 and is crushed into recycled aggregates of 30-60 mm, and then passes through the wet separator B 3-2 to remove impurities such as wood and plastic, and the recycled aggregates are sorted into concrete recycled aggregates and brick recycled aggregates by the color sorter 4 and transported to the pure concrete silo 5 and the pure brick silo 6 respectively; the third category of brick construction waste conveyed by the feeder C1-3 is passed through the wet separator C 3-3 to remove impurities such as wood and plastic, and then transported to the pure brick silo 6.

[0044] 3. The construction waste in the pure concrete silo 5 is first crushed by the coarse crusher A 7-1 in the first round, and then enters the medium crusher A 8-1 for crushing. The obtained aggregate is removed of metal impurities such as iron by the magnetic separator A 9-1, and then screened by the screening device A 10-1 into different particle size aggregates of 0-5 mm, 5-10 mm, 10-20 mm, and 20-40 mm and stored in different partition bins of the concrete finished product silo 11; the construction waste in the pure brick silo 6 is first crushed by the coarse crusher B 7-2 in the first round, and then enters the medium crusher B 8-2 for crushing. The obtained aggregate is removed of metal impurities such as iron by the magnetic separator B 9-2, and then screened by the screening device B 10-2 into different particle size aggregates of 0-5 mm, 5-10 mm, 10-20 mm, and 20-40 mm and stored in different partition bins of the brick finished product silo 12.

[0045] Although the specific implementation manners of the present invention are described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that, based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. A device for preparing recycled aggregate using construction waste, characterized in that: include: Feeder B, color sorter, pure concrete silo, pure brick silo, aggregate crusher, finished concrete silo and finished brick silo; The discharge port of feeder B is connected to the feed port of color sorter. The color sorter is provided with two discharge ports, which are respectively connected to the feed ports of pure concrete bin and pure brick bin. The pure concrete bin is connected to the finished concrete bin through an aggregate crusher, and the pure brick bin is connected to the finished brick bin through another aggregate crusher.

2. The device for preparing recycled aggregate using construction waste according to claim 1, characterized in that: It also includes a feeder A and a feeder C. The discharge port of the feeder A is connected to a pure concrete bin, and the discharge port of the feeder C is connected to a pure brick bin.

3. The device for preparing recycled aggregate using construction waste according to claim 1, characterized in that: A rotor crusher is also provided between the feeder B and the color sorter.

4. The device for preparing recycled aggregate using construction waste as claimed in claim 2, characterized in that: Wet separators are installed between feeder A1-1 and the pure concrete bin, between the rotor crusher and the color sorter, and between feeder C and the pure brick bin.

5. The device for preparing recycled aggregate using construction waste according to claim 1, characterized in that: Aggregate crushers include coarse crushers and secondary crushers.

6. The device for preparing recycled aggregate using construction waste as claimed in claim 5, characterized in that: The pure concrete silo is connected to the coarse crusher, the coarse crusher is connected to the medium crusher, and the medium crusher is connected to the concrete finished product silo; the pure brick silo is also connected to the brick finished product silo through the coarse crusher and the medium crusher in sequence.

7. The device for preparing recycled aggregate using construction waste according to claim 6, characterized in that: Magnetic separators are installed between the medium crusher and the concrete finished product bin, and between the medium crusher and the brick finished product bin to remove metal impurities in aggregates.

8. The device for preparing recycled aggregate using construction waste according to claim 7, characterized in that: A screening device is installed between the magnetic separator and the finished concrete product bin.

9. The device for preparing recycled aggregate using construction waste according to claim 7, characterized in that: A screening device is arranged between the magnetic separator and the finished brick warehouse.

10. The device for preparing recycled aggregate using construction waste according to claim 9, characterized in that: The coarse crusher is a jaw crusher, the medium crusher is a hammer crusher, and the screening device is a specific gravity screen.

Images