Recycled concrete raw material humidifying equipment

Abstract

The utility model relates to recycled concrete raw material humidifying equipment, and belongs to the technical field of concrete production. According to the utility model, through the rotary driving of the drum screen and the design of the spiral blades on the inner wall, the recycled aggregate continuously disperses and falls down in the rolling process, and a dynamic water mist humidifying area is formed by matching with the atomizing nozzle with the upwards inclined bottom, so that the contact area of water and the aggregate is increased, and the humidifying uniformity and effect are improved; the problem that the recycled aggregate is not fully wetted due to traditional one-way spraying is effectively solved, and compared with a traditional soaking type treatment mode, consumption of water resources is greatly reduced, and the water resources are saved.

Description

Technical Field

[0001] This utility model belongs to the field of concrete production technology, specifically relating to a humidification device for recycled concrete raw materials. Background Technology

[0002] With the increasing demands for resource recycling and environmental protection in the construction industry, the application of recycled concrete is becoming more and more widespread. Recycled concrete is mainly made by replacing some or all of the natural aggregate with recycled aggregate obtained from crushing and screening waste concrete. However, the old cement paste adhering to the surface of recycled aggregate and the internal micro-cracks cause its water absorption rate to be significantly higher than that of natural aggregate, and its water absorption performance is unstable. If used directly in concrete production, recycled aggregate will compete with mixing water for adsorption, leading to problems such as poor workability and large strength fluctuations in fresh concrete. Therefore, pre-humidifying recycled aggregate before concrete preparation is one of the key processes for improving the performance of recycled concrete.

[0003] Traditional humidification equipment often uses spraying or soaking to wet aggregates. However, traditional spraying devices are mostly unidirectional sprays, and due to the stacking of aggregates, they can only wet the surface layer. The internal aggregates cannot effectively penetrate the water, resulting in over-wetting of the surface aggregates and insufficient wetting of the internal aggregates. This leads to poor humidification effect and affects the accuracy of subsequent concrete mix proportions. Although soaking can improve the wetting effect, it has problems such as clumping and high water consumption. Utility Model Content

[0004] To overcome the limitations of traditional spraying devices in the background technology, which are mostly unidirectional spraying devices and can only achieve surface wetting due to the influence of aggregate stacking, the internal aggregates are difficult to effectively penetrate with water, resulting in over-wetting of the surface aggregates and insufficient wetting of the internal aggregates, leading to poor humidification effect and affecting the accuracy of subsequent concrete mix proportions. Although soaking treatment can improve the wetting effect, it has the problems of clumping and high water consumption. This utility model provides a humidification device for recycled concrete raw materials. Through the rotation drive of the drum screen and the design of the inner spiral blades, the recycled aggregates are continuously dispersed and fall during the tumbling process. Combined with the upward tilting atomizing nozzles at the bottom to form a dynamic water mist humidification zone, the contact area between water and aggregates is increased, improving the uniformity and effect of humidification. This effectively solves the problem of insufficient wetting of recycled aggregates caused by traditional unidirectional spraying. Compared with the traditional soaking treatment method, it greatly reduces water consumption and saves water resources.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A humidification device for recycled concrete raw materials mainly includes a casing, a drum screen, a rotating shaft, a first motor, spray pipes, a hopper, support feet, and a bracket. The casing has support feet installed at the bottom and a bracket installed on the side wall. One end of the drum screen is mounted inside the casing via a support wheel and has spiral blades on its inner wall. The other end has a rotating shaft installed, with one end of the shaft penetrating the side wall of the casing and mounted on the bracket through a bearing seat. The first motor is mounted on the bracket and connected to the rotating shaft for transmission. A hopper connected to the drum screen is installed on the other side of the casing. Two spray pipes connected to an external pipe are installed on the inner wall of the casing. The spray pipes are located on both sides below the drum screen, and multiple upwardly inclined atomizing nozzles are equidistantly arranged along the axial direction on the spray pipes.

[0006] The inner wall of the casing is equipped with an air duct that is connected to an external fan. Multiple air outlets are equidistantly opened along the axial direction on the air duct. A rectangular discharge trough is provided on the other side wall of the casing, and the discharge trough is located directly below one of the spray pipes. A collection box is provided directly below the discharge trough.

[0007] The bottom of the casing is provided with a V-shaped material collection hopper. A discharge pipe is provided on the side wall of the material collection hopper, and an auger coaxial with the discharge pipe is installed at the bottom of the hopper. A second motor is installed on the other side wall, and the second motor is connected to the shaft end of the auger for transmission.

[0008] The machine casing is equipped with a cleaning pipe that is connected to the external pipe. The cleaning pipe is located above the drum screen, and cleaning nozzles are equidistantly arranged along the axial direction on the cleaning pipe. The cleaning nozzles are inclined along the radial direction of the drum screen.

[0009] The machine casing is equipped with a cleaning brush, which is located above the drum screen and the bristles on the cleaning brush are in contact with the outer wall of the drum screen.

[0010] The top of the chassis is equipped with a protective shell that can be opened to both sides.

[0011] The beneficial effects of this utility model are:

[0012] This invention utilizes the rotation drive of the drum screen and the design of the spiral blades on the inner wall to ensure that the recycled aggregate falls evenly along the screen holes during the tumbling process. Combined with the upward-sloping atomizing nozzles at the bottom, a dynamic water mist humidification zone is formed, which increases the contact area between water and aggregate, improves the uniformity and effect of humidification, and effectively solves the problem of insufficient wetting of recycled aggregate caused by traditional unidirectional spraying. Compared with the traditional soaking treatment method, it greatly reduces water consumption and saves water resources. Attached Figure Description

[0013] Figure 1 This is the isometric drawing of this utility model.

[0014] Figure 2This is a three-dimensional schematic diagram of the internal structure of this utility model.

[0015] Figure 3 This is a three-dimensional cross-sectional view of the present invention.

[0016] Figure 4 This is another sectional perspective view of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] This utility model discloses a humidification device for recycled concrete raw materials. The main components of the humidification device are: a casing 1, a drum screen 2, a rotating shaft 3, a first motor 4, a spray pipe 5, a hopper 6, support legs 7, and a bracket 8. The casing 1 has support legs 7 installed at its bottom and a bracket 8 installed on its side wall. One end of the drum screen 2 is mounted inside the casing 1 via a support wheel, and its inner wall is provided with spiral blades 201. The other end is mounted on the rotating shaft 3, which passes through the side wall of the casing 1 and is mounted on the bracket 8 via a bearing seat. The first motor 4 is mounted on the bracket 8 and is connected to the rotating shaft 3 for transmission. On the other side of the casing 1, a hopper 6 connected to the drum screen 2 is installed. Two spray pipes 5 connected to the external pipe are installed on the inner wall of the casing 1. The spray pipes 5 are located on both sides below the drum screen 2. Multiple upward-sloping atomizing nozzles are equidistantly arranged on the spray pipes 5 along the axial direction. An air guide pipe 9 connected to an external fan is installed on the inner wall of the casing 1 along the longitudinal direction. Multiple air outlets 901 are equidistantly opened on the air guide pipe 9 along the axial direction. A rectangular discharge trough 101 is provided on the other side wall of the casing 1. The discharge trough 101 is located directly below one of the spray pipes 5. A collection box 14 is provided directly below the discharge trough 101.

[0019] In operation, firstly, start the first motor 4 and the water pump on the external pipe. Then, feed the recycled aggregate into the drum screen 2 through the hopper 6 on the side wall of the casing 1. The first motor 4 drives the drum screen 2 to rotate through the rotating shaft 3. During the rotation, the spiral blades 201 on the inner wall of the drum screen 2 create a spiral pushing effect on the aggregate, causing the aggregate to continuously tumble and move axially within the drum screen 2. During this process, the recycled aggregate falls evenly through the screen holes of the drum screen 2. When the falling aggregate passes through the three-dimensional humidification zone formed by the spray pipe 5, water mist is sprayed upward through the inclined atomizing nozzles on the two spray pipes 5, forming a reverse contact with the falling aggregate and humidifying it. When the humidified aggregate falls to the bottom of the casing 1, the external fan blows air into the casing through the air guide pipe 9. A directional airflow is injected into the body and blown out through the air outlets 901 distributed axially through the air duct 9. Aggregates that do not meet the humidity requirements are blown into the rectangular discharge trough 101 by the airflow and finally fall into the collection box 14 for secondary processing, while aggregates that meet the requirements fall directly to the bottom of the casing 1. This utility model uses the rotation drive of the drum screen and the design of the spiral blades on the inner wall to make the recycled aggregate fall evenly along the screen holes during the tumbling process. Combined with the upward tilting atomizing nozzles at the bottom to form a dynamic water mist humidification zone, it increases the contact area between water and aggregate, improves the uniformity and effect of humidification, and effectively solves the problem of insufficient wetting of recycled aggregate caused by traditional unidirectional spraying. Compared with the traditional soaking treatment method, it greatly reduces water consumption and saves water resources.

[0020] The bottom of the casing 1 is provided with a V-shaped collection hopper 102. A discharge pipe 1021 is provided on the side wall of the collection hopper 102. An auger 10 coaxial with the discharge pipe 1021 is installed at the bottom of the collection hopper 102. A second motor 11 is installed on the other side wall. The second motor 11 is connected to the shaft end of the auger 10 for transmission. After being humidified, the recycled aggregate is sorted by the air guide pipe 9. The qualified aggregate falls into the V-shaped collection hopper 102 at the bottom of the casing 1 under the action of gravity. The second motor 11 drives the auger 10 to rotate. The auger blades push the aggregate accumulated at the bottom of the collection hopper 102 axially to the outlet of the discharge pipe 1021 for discharge. The inclined wall design on both sides of the V-shaped collection hopper 102 allows the aggregate to slide naturally towards the auger axis under the action of gravity. Combined with the spiral propulsion action of the auger blades, the continuous directional output of aggregate is achieved, which helps to improve the collection efficiency and reduce the residue of raw materials at the bottom of the collection hopper 102.

[0021] The casing 1 is equipped with a cleaning pipe 12 that is connected to an external connecting pipe. The cleaning pipe 12 is located above the drum screen 2. Cleaning nozzles are equidistantly arranged along the axial direction on the cleaning pipe 12 and are inclined radially along the drum screen 2. When the drum screen 2 needs to be cleaned, the external connecting pipe is connected to a water source and the external water pump is started to inject high-pressure water into the cleaning pipe 12, so that the cleaning nozzles spray a fan-shaped water curtain radially along the drum screen 2, covering the full width of the screen surface, and rinsing the drum screen 2. This can keep the drum screen 2 clean and prevent the accumulation of impurities and residues that may cause blockage.

[0022] The machine casing 1 is equipped with a cleaning brush 13, which is located above the drum screen 2 and the bristles on the cleaning brush 13 are in contact with the outer wall of the drum screen 2. During operation, the bristles on the cleaning brush 13 will continuously brush the outer wall of the drum screen 2 to remove impurities and residues on the drum screen 2, thus removing the impurities and residues attached to it and avoiding clogging of the screen holes, thereby ensuring smooth screening.

[0023] The top of the chassis 1 is equipped with a protective shell 103 that can be opened to both sides; when it is necessary to maintain or repair the equipment inside the chassis 1, the protective shell 103 can be opened to both sides so that the operator can carry out the operation.

[0024] Work process:

[0025] In operation, firstly, start the first motor 4 and the water pump on the external pipe. Then, feed the recycled aggregate into the drum screen 2 through the hopper 6 on the side wall of the casing 1. The first motor 4 drives the drum screen 2 to rotate through the rotating shaft 3. During the rotation, the spiral blades 201 on the inner wall of the drum screen 2 create a spiral pushing effect on the aggregate, causing the aggregate to continuously tumble and move axially within the drum screen 2. During this process, the recycled aggregate falls evenly through the screen holes of the drum screen 2. When the falling aggregate passes through the three-dimensional humidification zone formed by the spray pipes 5, water mist is sprayed upward through the inclined atomizing nozzles on the two spray pipes 5, forming a reverse flow with the falling aggregate. Upon contact, the recycled aggregate is humidified. As the humidified aggregate falls to the bottom of the casing 1, an external fan injects directional airflow into the casing through the air duct 9. This airflow is then blown out through the axially distributed air outlets 901 of the air duct 9. Aggregates that do not meet the humidity requirements are guided by the airflow into the rectangular discharge chute 101 and ultimately fall into the collection box 14 for secondary processing, while compliant aggregates fall directly to the bottom of the casing 1. A second motor 11 drives the auger 10 to rotate, pushing the aggregate accumulated at the bottom of the collection hopper 102 axially to the outlet of the discharge pipe 1021 for discharge. During operation, the cleaning brush 13... The brush bristles continuously scrub the outer wall of the drum screen 2, removing impurities and residues, thus preventing clogging of the screen holes and ensuring smooth screening. This invention utilizes the rotating drive of the drum screen and the spiral blade design on the inner wall to ensure that recycled aggregate falls evenly along the screen holes during tumbling. Combined with the upward-sloping atomizing nozzles at the bottom, a dynamic water mist humidification zone is formed, increasing the contact area between water and aggregate, improving the uniformity and effectiveness of humidification. This effectively solves the problem of insufficient wetting of recycled aggregate caused by traditional unidirectional spraying. Compared to traditional soaking methods, this significantly reduces water consumption and saves water resources.

[0026] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A recycled concrete raw material humidifying apparatus, characterized by: The aforementioned recycled concrete raw material humidification equipment includes a casing (1), a drum screen (2), a rotating shaft (3), a first motor (4), a spray pipe (5), a hopper (6), support feet (7), and a bracket (8). The bottom of the casing (1) is equipped with support feet (7), and the side wall is equipped with a bracket (8). One end of the drum screen (2) is mounted inside the casing (1) through a support wheel. Spiral blades (201) are provided on its inner wall. The other end is equipped with a rotating shaft (3). One end of the rotating shaft (3) passes through the side wall of the casing (1) and is mounted on the bracket (8) through a bearing seat. The first motor (4) is mounted on the bracket (8) and is connected to the rotating shaft (3) for transmission. The other side of the casing (1) is equipped with a hopper (6) that communicates with the drum screen (2). Two spray pipes (5) connected to the external pipe are installed on the inner wall of the casing (1). The spray pipes (5) are located on both sides below the drum screen (2). Multiple upward-sloping atomizing nozzles are equidistantly arranged on the spray pipes (5) along the axial direction.

2. A recycled concrete raw material wetting apparatus according to claim 1, characterized in that: The inner wall of the casing (1) is equipped with an air duct (9) that is connected to an external fan. Multiple air outlets (901) are equidistantly opened along the axial direction on the air duct (9). A rectangular discharge trough (101) is provided on the other side wall of the casing (1), and the discharge trough (101) is located directly below one of the spray pipes (5). A collection box (14) is provided directly below the discharge trough (101).

3. A recycled concrete raw material wetting apparatus as claimed in claim 1 or 2, characterized in that: The bottom of the casing (1) is provided with a V-shaped material collection hopper (102). A discharge pipe (1021) is provided on the side wall of the material collection hopper (102). An auger (10) coaxial with the discharge pipe (1021) is installed at the bottom of the hopper. A second motor (11) is installed on the other side wall. The second motor (11) is connected to the shaft end of the auger (10) via a drive connection.

4. A recycled concrete feedstock humidification apparatus as claimed in claim 3, wherein: The machine casing (1) is equipped with a cleaning pipe (12) that is connected to the external pipe. The cleaning pipe (12) is located above the drum screen (2). Cleaning nozzles are equidistantly arranged on the cleaning pipe (12) along the axial direction. The cleaning nozzles are inclined along the radial direction of the drum screen (2).

5. A recycled concrete raw material wetting apparatus as claimed in claim 1 or 4, characterized in that: The machine casing (1) is equipped with a cleaning brush (13), which is located above the drum screen (2), and the bristles on the cleaning brush (13) are in contact with the outer wall of the drum screen (2).

6. A recycled concrete raw material wetting apparatus as claimed in claim 1, characterized in that: The top of the chassis (1) is equipped with a protective shell (103) that can be opened to both sides.

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