A curtain grouting centralized slurry preparation-intelligent distribution system based on internet of things

Abstract

The utility model relates to a curtain grouting centralized slurry preparation-intelligent distribution system based on internet of things, including upper support platform, lower support platform, slurry preparation module, distribution module and intelligent control module, and slurry preparation module and distribution module set up on upper support platform, slurry preparation module includes at least one bunker, a stirring bin, and be used for conveying material from bunker to the spiral feeder of stirring bin, and the wall of stirring bin is equipped with monitoring sensor group for monitoring slurry parameter, distribution module includes the pump that communicates with the discharge port of stirring bin, the multichannel distribution valve that is connected with pump export, and at least two distribution branches that are led out by multichannel distribution valve, and is equipped with branch control valve and branch flowmeter on each distribution branch, intelligent control module includes the control cabinet that sets up on lower support platform, and is provided with controller in control cabinet, and control cabinet still is provided with internet of things gateway, the utility model discloses high degree of automation, and the proportioning is accurate, and the distribution is intelligent, and it is convenient for quality traceability.

Description

Technical Field

[0001] This utility model relates to the field of curtain grouting construction technology, and in particular to a centralized grout preparation and intelligent distribution system for curtain grouting based on the Internet of Things. Background Technology

[0002] Curtain grouting is a crucial step in the foundation seepage prevention treatment of water conservancy and hydropower projects, and its grouting quality directly affects the safety of dams and other structures. Traditional curtain grouting often employs a decentralized grout preparation and manual distribution model, where each grouting unit carries its own small grout preparation equipment and performs grouting operations nearby. This model has several drawbacks:

[0003] The slurry mix ratio relies on manual experience for control, and key parameters such as water-cement ratio and density fluctuate greatly, making it difficult to ensure uniform and stable slurry quality.

[0004] Production efficiency is low, each unit needs to independently complete the entire process of feeding, pulping, and grouting, resulting in low equipment utilization.

[0005] Material waste is serious; the residual slurry in the pipes and equipment at the end of each shift is difficult to recycle, resulting in waste and environmental pollution.

[0006] Incomplete and opaque data records during the construction process make quality traceability difficult and management efficiency low.

[0007] With the development of IoT technology, intelligent and refined construction processes have become a trend. Therefore, there is an urgent need for a system that can achieve centralized and standardized production of grout and can accurately and intelligently allocate it according to demand, in order to solve the pain points of the traditional construction methods mentioned above. Summary of the Invention

[0008] This invention aims to address the shortcomings of existing technologies by providing an Internet of Things-based centralized grouting and intelligent distribution system for curtain grouting.

[0009] To achieve the above objectives, this utility model adopts the following technical solution: a centralized slurry preparation and intelligent distribution system for curtain grouting based on the Internet of Things, comprising an upper support platform, a lower support platform, a slurry preparation module, a distribution module, and an intelligent control module. Several support rods are provided on the opposite edges of the upper and lower support platforms. The slurry preparation module and the distribution module are mounted on the upper support platform. The slurry preparation module includes at least one silo, a mixing chamber, and a screw conveyor for conveying materials from the silo to the mixing chamber. A water inlet pipe is provided at the top of the mixing chamber, and a set of monitoring sensors for monitoring slurry parameters is provided on the chamber wall. The distribution module includes a discharge port connected to the mixing chamber. The system includes a connected pump, a multi-way distribution valve connected to the pump outlet, and at least two distribution branches extending from the multi-way distribution valve. Each distribution branch is equipped with a branch control valve and a branch flow meter. The intelligent control module includes a control cabinet mounted on a lower support platform, containing a controller. The controller is electrically connected to the screw feeder, monitoring sensor group, pump, multi-way distribution valve, branch control valve, and branch flow meter. It is used to receive sensor data and control the actions of each actuator. The control cabinet also contains an IoT gateway, which is communicatively connected to the controller. It is used to remotely transmit system data to a cloud platform or monitoring center and receive remote control commands.

[0010] Specifically, a metering hopper is installed below the discharge port of the screw feeder. The metering hopper is fixedly connected to the side wall of the mixing chamber via a bracket. A weighing sensor is embedded in the bottom of the metering hopper and is electrically connected to the controller. An inclined feed pipe is connected between the bottom of the side wall of the metering hopper and the side wall of the mixing chamber.

[0011] Specifically, the monitoring sensor group includes a liquid level sensor installed on the top of the mixing chamber and an online density meter for real-time detection of slurry density; the water inlet pipe is equipped with a water inlet flow meter and a water inlet solenoid valve, both of which are electrically connected to the controller.

[0012] Specifically, there are multiple hoppers, which are evenly distributed around the top edge of the upper support platform, while the mixing hopper is located at the center of the upper support platform.

[0013] Specifically, the pump is a variable frequency booster pump, and a pressure sensor is installed on its outlet pipe. Both the pressure sensor and the variable frequency booster pump are electrically connected to the controller, forming a pressure closed-loop control system.

[0014] Specifically, it also includes an automatic flushing pipeline connected to the water inlet pipe, which is equipped with a flushing valve for automatically flushing the mixing chamber and distribution branch after grouting is completed.

[0015] Specifically, the top edge of the upper support platform is equipped with a railing, and a protective net is installed between two adjacent support rods, with openings on the protective net corresponding to the distribution branches.

[0016] Specifically, the top of the lower support platform is equipped with several pipe supports for supporting the distribution branches.

[0017] The beneficial effects of this utility model are:

[0018] By combining a metering hopper with a weighing sensor, precise quantitative feeding of powder materials is achieved; by linking an online density meter, a liquid level sensor, and an inlet solenoid valve, real-time monitoring and automatic adjustment of slurry density are realized, fundamentally ensuring the accuracy and stability of slurry proportions.

[0019] By combining a multi-way distribution valve with flow meters and control valves for each branch, a "centralized grouting and multi-point synchronous grouting" operation mode was achieved, significantly improving equipment utilization and construction efficiency. The intelligent control system can automatically distribute grout according to the needs of each grouting point.

[0020] The system integrates and controls all actions through a controller and uploads data to the cloud platform with the help of an IoT gateway, realizing the automation and remote visual monitoring of processes such as pulping, distribution, and rinsing. This reduces manual intervention, lowers labor intensity, and provides a complete data chain for quality traceability.

[0021] The platform is equipped with railings and safety nets to ensure the safety of operators; the automatic flushing function reduces slurry waste and environmental pollution; the closed-loop control system consisting of a variable frequency booster pump and a pressure sensor can stably deliver pressure and provide early warning and protection against abnormal pressure (such as pipe blockage), thereby improving the reliability and safety of system operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 This is a schematic diagram of the railing and protective net structure of this utility model;

[0025] In the diagram: 1-Upper support platform; 2-Lower support platform; 3-Hopper; 4-Mixing bin; 5-Screw feeder; 6-Inlet pipe; 7-Pump; 8-Multi-way distribution valve; 9-Distribution branch; 10-Branch flow meter; 11-Control cabinet; 12-Metering hopper; 13-Support; 14-Inlet pipe; 15-Level sensor; 16-Online density meter; 17-Inlet flow meter; 18-Guardrail; 19-Support rod; 20-Protective net; 21-Pipe bracket;

[0026] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] like Figures 1-3 As shown, an IoT-based centralized grouting and intelligent distribution system for curtain grouting achieves high-quality centralized production and precise distribution of grout through modular mechanical structures and intelligent control. It includes an upper support platform 1, a lower support platform 2, a grouting module, a distribution module, and an intelligent control module.

[0029] The system adopts a non-layered structure, including an upper support platform 1, a lower support platform 2, and support rods 19 connecting the two. A railing 18 is installed around the top edge of the upper support platform 1, and a protective net 20 is installed between adjacent support rods 19. The main equipment of the pulping module and distribution module is integrated on the upper support platform 1, while the core control cabinet 11 of the intelligent control module is placed on the lower support platform 2. This layout achieves functional zoning, resulting in a compact structure and facilitating equipment maintenance and pipeline layout. The railing 18 and protective net 20 at the edge of the upper support platform 1 constitute a safe operating space, effectively improving construction safety.

[0030] The pulping module includes at least one hopper 3, one mixing chamber 4, and a screw conveyor 5 for conveying materials from the hopper 3 to the mixing chamber 4. Specifically, there are multiple hoppers 3, evenly distributed around the top edge of the upper support platform 1, and the mixing chamber 4 is located at the center of the upper support platform 1. The pulping module is the core component for ensuring slurry quality. The arrangement of multiple hoppers 3 evenly distributed around the edge of the upper support platform 1, with the mixing chamber 4 at the center, minimizes and evenly distributes the conveying path of the screw conveyor 5, improving feeding efficiency.

[0031] A metering hopper 12 is installed below the discharge port of the screw feeder 5. The metering hopper 12 is fixedly connected to the side wall of the mixing chamber 4 via a bracket 13. A weighing sensor is embedded in the bottom of the metering hopper 12 and is electrically connected to the controller. An inclined feed pipe 14 connects the bottom of the side wall of the metering hopper 12 to the side wall of the mixing chamber 4. When the screw feeder 5 continuously feeds, the material accumulates in the metering hopper 12. Once the material level exceeds the inlet of the inclined feed pipe 14 at the bottom of the side wall, the excess material will automatically overflow into the mixing chamber 4. At this time, the stable weight value monitored by the weighing sensor reflects the weight of powder flowing into the mixing chamber 4 per unit time. This dynamic overflow weighing structure realizes high-precision online metering during continuous feeding, avoids production interruptions caused by traditional batch weighing, and ensures the continuity of pulping and the accuracy of metering.

[0032] A water inlet pipe 6 is installed at the top of the mixing chamber 4, and a monitoring sensor group for monitoring slurry parameters is installed on the chamber wall. The monitoring sensor group includes a liquid level sensor 15 installed at the top of the mixing chamber 4 and an online densitometer 16 for real-time detection of slurry density. A water inlet flow meter 17 and a water inlet solenoid valve are installed on the water inlet pipe 6, and both the water inlet flow meter 17 and the water inlet solenoid valve are electrically connected to the controller. The advantage of this structure is that it forms a closed-loop control of slurry quality: the controller calculates the required water volume based on the target water-cement ratio and the powder weight obtained from the weighing sensor, and precisely controls the water addition through the water inlet flow meter 17 and the water inlet solenoid valve. The online densitometer 16 performs real-time verification of the slurry density, and if a deviation is detected, the controller can immediately fine-tune the water addition. This dual control mode of "feedforward + feedback" ensures that the slurry density is always maintained within the set range, fundamentally improving the stability of slurry quality.

[0033] The distribution module includes a pump 7 connected to the discharge port of the mixing chamber 4, a multi-way distribution valve 8 connected to the outlet of the pump 7, and at least two distribution branches 9 led out from the multi-way distribution valve 8. Each distribution branch 9 is equipped with a branch control valve and a branch flow meter 10. The top of the lower support platform 2 is equipped with several pipe supports 21 for supporting the distribution branches 9, and the protective net 20 has openings corresponding to the distribution branches 9. The distribution module is responsible for delivering qualified slurry to each work point as needed. The slurry in the mixing chamber 4 is pumped out by the pump 7, which is preferably a variable frequency booster pump. Its outlet is equipped with a pressure sensor, and both the pressure sensor and the variable frequency booster pump are electrically connected to the controller. The advantage of this is that it forms a pressure closed-loop control system: the controller adjusts the frequency converter in real time based on the feedback from the pressure sensor, thereby controlling the speed of the pump 7 and keeping the system pressure stable. This not only ensures the stability of the grouting pressure, but also automatically reduces the speed or stops the machine when a blockage occurs in a branch, causing a sudden increase in pressure, thus playing a safety protection role.

[0034] The grout is distributed to each distribution branch 9 via a multi-port distribution valve 8. Each branch is equipped with a branch control valve and a branch flow meter 10. The intelligence of this structure is reflected in the fact that operators can set the required grout volume for each branch at a remote monitoring center. The controller will prioritize the supply to the critical lines and compare the feedback value of the branch flow meter 10 with the set value in real time, dynamically adjusting the opening degree of the branch control valve or the switching sequence of the multi-port distribution valve 8. This achieves intelligent scheduling and precise on-demand delivery of grout resources, greatly improving the overall efficiency of grouting operations.

[0035] The intelligent control module includes a control cabinet 11 mounted on the lower support platform 2. The control cabinet 11 contains a controller. The controller is electrically connected to the screw feeder 5, the monitoring sensor group, the pump 7, the multi-way distribution valve 8, the branch control valve, and the branch flow meter 10. It is used to receive sensor data and control the actions of each actuator. The control cabinet 11 also contains an Internet of Things (IoT) gateway. The IoT gateway is communicatively connected to the controller and is used to remotely transmit system data to the cloud platform or monitoring center and receive remote control commands.

[0036] The system's "intelligent" brain consists of a controller (a PLC, Siemens S7-1200 series optional) and an IoT gateway located in control cabinet 11. All sensor data is collected by the PLC, which controls the actions of all actuators according to preset logic. Its core advantage lies in remote and digital management: the IoT gateway uploads all data (such as slurry density, total / branch flow, system pressure, equipment status, etc.) to the cloud platform, allowing technicians to remotely monitor the entire system's operating status in real time and intervene. This not only reduces the number of on-site personnel but also achieves paperless and traceable data in the construction process, providing a solid data foundation for project quality assessment.

[0037] It also includes an automatic flushing pipeline connected to the water inlet pipe 6, which is equipped with a flushing valve for automatically flushing the mixing chamber and distribution branch 9 after grouting is completed. This structure avoids blockages and waste caused by grout solidification in the equipment and pipelines, achieves self-maintenance of the equipment, extends its service life, and is more environmentally friendly.

[0038] In operation, this invention first sets the slurry mixing ratio parameters and the required parameters for each grouting point at the remote monitoring center. After the system is started, the screw conveyor 5 transports the powder from the hopper 3 to the metering hopper 12 for precise metering before it enters the mixing chamber 4. Simultaneously, the water inlet solenoid valve precisely adds water according to instructions, and the online density meter 16 monitors and provides feedback adjustments in real time to form a high-quality slurry. Subsequently, the pump 7 pumps the slurry out, which is intelligently distributed to each working branch through the multi-way distribution valve 8. The branch control valves and branch flow meters 10 on each distribution branch 9 work together to ensure that the slurry is delivered accurately as needed. All process data is uploaded to the cloud via an IoT gateway for remote monitoring and recording. After the operation is completed, an automatic flushing program is initiated to clean the equipment and pipelines. This invention features a high degree of automation, precise mixing ratio, intelligent distribution, and easy quality traceability.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A centralized grout preparation and intelligent distribution system for curtain grouting based on the Internet of Things, characterized in that, The system includes an upper support platform (1), a lower support platform (2), a pulping module, a distribution module, and an intelligent control module. Several support rods (19) are provided on the opposite edges of the upper support platform (1) and the lower support platform (2). The pulping module and the distribution module are located on the upper support platform (1). The pulping module includes at least one silo (3), a mixing chamber (4), and a screw conveyor (5) for conveying materials from the silo (3) to the mixing chamber (4). A water inlet pipe (6) is provided on the top of the mixing chamber (4), and a set of monitoring sensors for monitoring slurry parameters is provided on the wall of the mixing chamber (4). The distribution module includes a pump (7) connected to the outlet of the mixing chamber (4) and a multi-way distribution valve (8) connected to the outlet of the pump (7). The intelligent control module includes a control cabinet (11) set on the lower support platform (2), and a controller set in the control cabinet (11). The controller is electrically connected to the screw feeder (5), the monitoring sensor group, the pump (7), the multi-way distribution valve (8), the branch control valve and the branch flow meter (10), and is used to receive sensor data and control the actions of each actuator. The control cabinet (11) is also equipped with an Internet of Things gateway, which is connected to the controller for remote transmission of system data to the cloud platform or monitoring center and receiving remote control commands.

2. The curtain grouting centralized slurry preparation and intelligent distribution system based on the Internet of Things as described in claim 1, characterized in that, A metering hopper (12) is provided below the discharge port of the screw feeder (5). The metering hopper (12) is fixedly connected to the side wall of the mixing chamber (4) through a bracket (13). A weighing sensor is embedded at the bottom of the metering hopper (12). The weighing sensor is electrically connected to the controller. An inclined feed pipe (14) is connected between the bottom of the side wall of the metering hopper (12) and the side wall of the mixing chamber (4).

3. The curtain grouting centralized slurry preparation and intelligent distribution system based on the Internet of Things as described in claim 1, characterized in that, The monitoring sensor group includes a liquid level sensor (15) installed on the top of the mixing chamber (4) and an online density meter (16) for real-time detection of slurry density; the water inlet pipe (6) is equipped with a water inlet flow meter (17) and a water inlet solenoid valve, both of which are electrically connected to the controller.

4. The curtain grouting centralized slurry preparation-intelligent distribution system based on the Internet of Things as described in claim 1, characterized in that, There are multiple silos (3) and they are evenly distributed around the top edge of the upper support platform (1). The mixing silo (4) is located at the center of the upper support platform (1).

5. The curtain grouting centralized slurry preparation-intelligent distribution system based on the Internet of Things as described in claim 1, characterized in that, Pump (7) is a variable frequency booster pump. A pressure sensor is installed on its outlet pipe. The pressure sensor and the variable frequency booster pump are electrically connected to the controller to form a pressure closed-loop control system.

6. The curtain grouting centralized slurry preparation-intelligent distribution system based on the Internet of Things as described in claim 1, characterized in that, It also includes an automatic flushing pipeline connected to the water inlet pipe (6), and the automatic flushing pipeline is equipped with a flushing valve for automatically flushing the mixing chamber and the distribution branch (9) after the grouting is completed.

7. The curtain grouting centralized slurry preparation and intelligent distribution system based on the Internet of Things as described in claim 1, characterized in that, The upper support platform (1) has a railing (18) around its top edge, and a protective net (20) is provided between two adjacent support rods (19), and the protective net (20) has an opening corresponding to the distribution branch (9).

8. The curtain grouting centralized slurry preparation-intelligent distribution system based on the Internet of Things as described in claim 1, characterized in that, The top of the lower support platform (2) is provided with several pipe brackets (21) for supporting the distribution branch (9).

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