A distributing and storing device for recycled aggregate

Abstract

The application relates to the technical field of cement, and discloses a material distributing and storing device for recycled aggregate. The device comprises a base, a PLC controller, a plurality of material storing hoppers arranged side by side on the base, a collecting groove and a water supply unit. The discharge port of each material storing hopper is connected with a pre-wetting tank through a quantitative valve, and the bottom of the pre-wetting tank is provided with a discharging valve. The pre-wetting tank, the quantitative valve and the water supply unit are integrated. After the material is stored and distributed, the material can be directly and accurately pre-wetted in the same device without being transferred. The application can classify and store different recycled aggregates and quantitatively discharge the aggregates. On this basis, the pre-wetting key process is integrated, so that a single material storing device is upgraded to a comprehensive workstation with pretreatment capacity. Without significantly increasing the floor area, the device function is doubled and the production efficiency is greatly improved.

Description

Technical Field

[0001] This application relates to the field of cement technology, specifically to a material distribution and storage device for recycled aggregates. Background Technology

[0002] In the large-scale production of recycled aggregate concrete, it is usually necessary to use recycled aggregates of different particle sizes or types. In order to meet the material supply requirements of continuous production and achieve precise formula proportioning, the material distribution and storage device has become a key piece of equipment on the production line. Traditional material storage devices typically include multiple storage hoppers arranged in parallel, a collection trough below, and a conveyor. Their main functions are to realize the classification, storage, quantitative feeding, and collection and transportation of materials.

[0003] However, due to their high water absorption rate, recycled aggregates require pre-wetting treatment before entering the mixer to suppress the negative impact of excessive water absorption during mixing. The current mainstream process separates storage / transportation from pre-wetting treatment into two independent stages: the aggregate is first removed from the storage hopper and transported via conveyor equipment to a separate pre-wetting device (such as a soaking tank or mixing chamber) for processing, before being transported to the mixing plant. This separate operation mode has many drawbacks, such as complex process flow, large footprint, low turnover efficiency due to multiple transport and transfer of aggregates, and difficulties in automation integration. Utility Model Content

[0004] In view of the above problems, this application provides a recycling aggregate sorting and storage device, which can deeply integrate pre-wetting treatment capabilities on the basis of the existing recycling aggregate sorting and storage functions, thereby simplifying the process, improving efficiency and ensuring quality.

[0005] According to one aspect of the embodiments of this application, a material distribution and storage device for recycled aggregate is provided. The material distribution and storage device for recycled aggregate includes a base, a PLC controller, storage hoppers, a collection trough, and a water supply unit. Multiple storage hoppers are arranged side-by-side on the base. The outlet of each storage hopper is connected to a pre-wetting tank via a metering valve. A discharge valve is provided at the bottom of the pre-wetting tank. The collection trough, located below all the pre-wetting tanks, is used to collect material from the pre-wetting tanks and has a V-shaped cross-section. A belt conveyor is provided below the outlet of the collection trough. The water supply unit includes a water tank located on the top of the base, a metering pump connected to the water tank, and multiple branch pipes connected to the outlet of the metering pump. Each branch pipe extends above a pre-wetting tank and is equipped with a solenoid valve. The storage hoppers, pre-wetting tanks, and collection troughs are fixedly installed via a support frame. The metering valve, solenoid valve, and metering pump are electrically connected to the PLC controller.

[0006] In some embodiments, the PLC controller is configured to control the metering pump and the corresponding solenoid valve to inject a corresponding mass of water into the pre-wetting tank based on the mass of recycled aggregate fed into the pre-wetting tank through the metering valve.

[0007] In some embodiments, the pre-humidification tank is provided with a stirring device inside, and the stirring device is electrically connected to the PLC controller.

[0008] In some embodiments, the PLC controller is further configured to control the water injection process into the pre-wetting tank to overlap at least partially in time with the operation of the stirring device.

[0009] In some embodiments, the stirring device includes a drive motor, a stirring shaft driven by the drive motor, and a plurality of stirring blades fixed on the stirring shaft. The drive motor is fixedly installed on the top of the pre-humidification tank, and the stirring blades are arranged in multiple layers on the stirring shaft.

[0010] In some embodiments, the inner wall of the V-shaped collection trough is provided with a polymer wear-resistant liner.

[0011] In some embodiments, the end of the branch pipe extending into the pre-humidification tank is provided with an atomizing nozzle.

[0012] In some embodiments, the prehumidification tank is a sealed structure with an observation window or maintenance port on its top.

[0013] The beneficial effects of this application are: 1. This application integrates a pre-humidification tank, a metering valve, and a water supply unit into a single unit, based on a traditional material distribution and storage device. This allows materials to be precisely pre-humidified directly within the same device after storage and distribution without the need for transfer, simplifying the traditional multi-stage "storage-transfer-pre-humidification" process into a single "integrated storage and pre-humidification" stage, greatly streamlining the process flow and equipment layout.

[0014] 2. In this application, the entire process, from feeding aggregate into a specific storage hopper to receiving it in the corresponding pre-wetting tank and then precisely matching the amount of water added, is fully automated through the configuration of a PLC controller. This ensures that each batch of aggregate receives a fixed amount of moisture, fundamentally solving problems such as uneven pre-wetting and uncontrolled water volume caused by the separation of processes. This significantly improves the consistency of product quality and allows for flexible control based on different recycled aggregates, further enhancing the accuracy of the pre-wetting process.

[0015] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the overall structure of the device after removing the base, as provided in the embodiments of this application. Figure 3 This is a partial structural diagram of the device provided in an embodiment of this application.

[0017] The reference numerals in the detailed embodiments are as follows: The recycled aggregate distribution and storage device 100 includes a base 110, a storage hopper 120, an aggregate trough 130, a water supply unit 140, a water tank 141, a metering pump 142, a branch pipe 143, a solenoid valve 144, a metering valve 150, a belt conveyor 160, a mixing device 170, a drive motor 171, a pre-wetting tank 180, an observation window 181, and a discharge valve 182. Detailed Implementation

[0018] The embodiments of the technical solution of this application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and the foregoing description of the accompanying drawings are intended to cover non-exclusive inclusion.

[0019] For details, please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of the overall structure of the device provided in an embodiment of this application. Figure 2 This is a schematic diagram of the overall structure of the device provided in this embodiment after removing the base. Figure 3This is a partial structural diagram of the equipment provided in an embodiment of this application. The recycled aggregate distribution and storage device 100 includes a base 110, a PLC controller, a storage hopper 120, a collection trough 130, and a water supply unit 140. Multiple storage hoppers 120 are arranged side-by-side on the base 110, and each hopper 120 can hold recycled aggregates of different materials (such as recycled concrete aggregates, recycled brick and tile aggregates, mixed recycled aggregates, etc.) or aggregates of different particle sizes. The base 110 is typically made of cast concrete and is supported by concrete columns and beams. The outlet of each storage hopper 120 is connected to a pre-wetting tank 180 via a metering valve 150. It is well known that, to prevent uneven feeding or blockage caused by "bridging" or "material overflow," a vibrating motor can be installed on the outer wall of the cone portion of the storage hopper 120 or on the valve body of the metering valve 150 to assist in feeding. The metering valve 150 can precisely control the flow rate or final total amount of aggregate passing through it according to the instructions issued by the PLC controller, thereby conveying a certain amount of recycled aggregate to the pre-wetting tank 180 according to actual production needs. A discharge valve 182 is installed at the bottom of the pre-wetting tank 180. A collection trough 130, located below all the pre-wetting tanks 180, collects materials from the pre-wetting tanks 180 and has a V-shaped cross-section. The pre-wetted recycled aggregate in the pre-wetting tanks 180 can be discharged into the collection trough 130 through the discharge valve 182. To ensure efficient discharge, a vibrating motor or pneumatic vibrator can also be installed here. A belt conveyor 160 is installed below the discharge port of the collection trough 130, which can transport the corresponding recycled aggregate to subsequent production units. The water supply unit 140 includes a water tank 141 mounted on top of the base 110, a metering pump 142 connected to the water tank 141, and multiple branch pipes 143 connected to the outlet of the metering pump 142. Each branch pipe 143 extends above a pre-wetting tank 180, and each branch pipe 143 is equipped with a solenoid valve 144. The water supply unit 140 is used to supply water to each pre-wetting tank 180 to complete the pre-wetting operation. The storage hopper 120, the pre-wetting tank 180, and the collection trough 130 are fixedly installed by a support frame. The metering valve 150, the solenoid valve 144, and the metering pump 142 are electrically connected to a PLC controller. The PLC controller can be configured to control the metering pump 142 and the corresponding solenoid valve 144 to inject a corresponding mass of water into the pre-wetting tank 180 according to the mass of recycled aggregate fed into the pre-wetting tank 180 through the metering valve 150.

[0020] In this embodiment of the application, during the working process... Different types or sizes of recycled aggregates are pre-stored in multiple parallel storage hoppers 120. When production is required, the PLC controller, according to a preset formula, sends an opening command to the metering valve 150 below one or more target storage hoppers 120. The metering valve 150, according to the PLC settings, precisely measures and releases a specific mass of recycled aggregate, allowing it to flow into the corresponding pre-wetting tank 180 below. The PLC controller calculates the required water volume based on the mass of recycled aggregate added to the pre-wetting tank 180 and the preset water-cement ratio. Subsequently, the PLC controller starts the metering pump 142 and simultaneously opens the solenoid valve 144 on the branch pipe 143 leading to the pre-wetting tank 180. The metering pump 142 draws the calculated precise amount of water from the water tank 141 and injects it into the pre-wetting tank 180 containing the recycled aggregate through the branch pipe 143, completing the quantitative pre-wetting of the aggregate. After the pre-wetting process is completed (which can be set to allow for a period of settling or stirring), the PLC controller opens the discharge valve 182 at the bottom of the pre-wetting tank 180. The pre-wetted recycled aggregate is discharged under gravity and falls into the shared collection trough 130 below. The collection trough 130 collects materials from different pre-wetting tanks 180 and guides them to their outlets, where they fall onto the belt conveyor 160 below. Finally, the belt conveyor 160 continuously and stably transports the pre-wetted recycled aggregate to the subsequent concrete production equipment.

[0021] In some embodiments, a stirring device 170 is provided inside the pre-wetting tank 180, and the stirring device 170 is electrically connected to the PLC controller. In this embodiment, by setting the stirring device 170, the stirring device mechanically forces the recycled aggregate and water to generate convection, shearing, and diffusion within the tank, thereby significantly shortening the pre-wetting cycle and improving production efficiency. Furthermore, since the stirring device 170 is electrically connected to the PLC controller, the system can achieve intelligent control of the stirring process. For example, the PLC controller can be configured to control the water injection process into the pre-wetting tank 180 to overlap at least partially in time with the operation of the stirring device 170, thereby reducing the time required for the entire mixing and pre-wetting process. Moreover, different stirring speeds and durations can be preset according to different types and particle sizes of recycled aggregates to achieve refined processing.

[0022] In some embodiments, the stirring device 170 includes a drive motor 171, a stirring shaft driven by the drive motor 171, and a plurality of stirring blades fixed on the stirring shaft. The drive motor 171 is fixedly installed on the top of the pre-humidification tank 180, and the stirring blades are arranged in multiple layers on the stirring shaft. For ease of explanation, this application provides a specific configuration of the stirring device 170.

[0023] In some embodiments, the inner wall of the V-shaped aggregate trough 130 is provided with a polymer wear-resistant liner. In this embodiment, by providing a wear-resistant liner to protect the V-shaped aggregate trough 130, the wear damage caused to the inner wall of the V-shaped aggregate trough 130 by the falling recycled aggregate is delayed.

[0024] In some embodiments, the end of the branch pipe 143 extending into the pre-humidification tank 180 is provided with an atomizing nozzle. In this embodiment, by providing an atomizing nozzle to spray water evenly, the efficiency of the pre-humidification process is further improved.

[0025] In some embodiments, the prehumidification tank 180 is a sealed structure with an observation window 181 or maintenance port on its top. In this embodiment, the above-described configuration facilitates the detection of the operating status of the prehumidification tank 180 or its maintenance.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although the foregoing embodiments have provided a detailed description of this application, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A material distribution and storage device for recycled aggregate, characterized in that, It includes a base, a PLC controller, a storage hopper, a collection tank, and a water supply unit. There are multiple storage hoppers arranged side by side on the base. The outlet of each storage hopper is connected to a pre-wetting tank through a certain amount valve. The bottom of the pre-wetting tank is provided with a discharge valve. The material collection trough is used to collect materials from the pre-wetting tanks. It is located below all the pre-wetting tanks and has a V-shaped cross-section. A belt conveyor is installed below the discharge port of the material collection trough. The water supply unit includes a water tank located on the top of the base, a metering pump connected to the water tank, and multiple branch pipes connected to the outlet of the metering pump. Each branch pipe extends above a pre-wetting tank and is equipped with a solenoid valve. The storage hopper, the pre-wetting tank, and the collection trough are fixedly installed by a support frame. The metering valve, the solenoid valve, and the metering pump are electrically connected to the PLC controller.

2. The material distribution and storage device for recycled aggregate according to claim 1, characterized in that, The PLC controller is configured to control the metering pump and the corresponding solenoid valve to inject a corresponding mass of water into the pre-wetting tank based on the mass of recycled aggregate fed into the pre-wetting tank through the metering valve.

3. The material distribution and storage device for recycled aggregate according to claim 2, characterized in that, The pre-humidification tank is equipped with a stirring device inside, and the stirring device is electrically connected to the PLC controller.

4. The material distribution and storage device for recycled aggregate according to claim 3, characterized in that, The PLC controller is also configured to control the water injection process into the pre-wetting tank to overlap at least partially in time with the operation of the stirring device.

5. The material distribution and storage device for recycled aggregate according to claim 3, characterized in that, The stirring device includes a drive motor, a stirring shaft driven by the drive motor, and multiple stirring blades fixed on the stirring shaft. The drive motor is fixedly installed on the top of the pre-humidification tank, and the stirring blades are arranged in multiple layers on the stirring shaft.

6. The material distribution and storage device for recycled aggregate according to claim 1, characterized in that, The inner wall of the V-shaped collection trough is lined with a polymer wear-resistant liner.

7. The material distribution and storage device for recycled aggregate according to claim 1, characterized in that, The branch pipe is equipped with an atomizing nozzle at its end extending into the pre-humidification tank.

8. The material distribution and storage device for recycled aggregate according to claim 1, characterized in that, The prehumidification tank is a sealed structure with an observation window or maintenance port on its top.

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