Device for measuring mixing amount and proportion of polycarboxylate superplasticizer

Abstract

The utility model discloses a device for measuring the mixing amount and proportion of a polycarboxylic acid water reducing agent, and relates to the technical field of liquid additive supply devices of concrete batching equipment, the bottom of a water reducing agent storage tank is provided with an outlet; the controller is internally provided with an algorithm to automatically calculate the adding amount of the water reducing agent; the metering unit comprises a liquid flow meter mounted at the outlet, a three-way pipe connected with the liquid flow meter, a peristaltic pump connected with a connector I of the three-way pipe, and a hose connected with a liquid outlet of the peristaltic pump; the cleaning device comprises a three-way electromagnetic directional valve connected with a connector II of the three-way pipe, an air pump connected with a connector III of the three-way electromagnetic directional valve, and a water pump connected with a connector IV of the three-way pipe. The residual water reducing agent in the pipeline is blown into the stirrer through the air pump, water is pumped through the water pump to clean the pipeline, and the problems of residual water reducing agent in the pipeline and cleaning of the pipeline are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of liquid additive supply devices for concrete batching equipment, specifically relating to a polycarboxylate superplasticizer dosage and ratio measuring device. Background Technology

[0002] In the concrete production process, the precise addition of polycarboxylate superplasticizer is crucial to concrete performance. Currently, large-scale production commonly employs pumping systems combined with flow meters to automate the addition of the superplasticizer. However, this system has a significant technical drawback: due to the high adhesiveness and viscosity of polycarboxylate superplasticizer, a considerable amount of superplasticizer remains in the pipes, pump body, and flow meter after delivery. This residue leads to the following problems:

[0003] Residual water-reducing agent directly affects the accuracy of the actual amount added, causing deviations in the concrete mix design and consequently impacting its workability and final strength. With repeated use, residual water-reducing agent gradually accumulates, potentially causing pipe blockages or equipment damage, severely impacting production efficiency. If these residues are not cleaned promptly, they can dry and harden inside the equipment, significantly increasing the difficulty of subsequent cleaning. Utility Model Content

[0004] In order to overcome the problems existing in the background technology, the present invention provides a polycarboxylate superplasticizer dosage ratio measuring device.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a polycarboxylate superplasticizer dosage ratio measuring device, comprising:

[0006] Water-reducing agent storage tank, with an outlet at the bottom;

[0007] The controller is equipped with a control panel for inputting parameters such as total amount of cementitious materials, target dosage range, ambient temperature, and mud content of aggregates, and has a built-in algorithm to automatically calculate the dosage of water-reducing agent;

[0008] The metering unit includes: a liquid flow meter installed at the outlet, a three-way pipe connected to the liquid flow meter, a peristaltic pump connected to interface I of the three-way pipe, and a flexible hose connected to the outlet of the peristaltic pump, wherein the peristaltic pump adjusts the flow rate according to the instructions of the controller;

[0009] The cleaning device includes: a three-way solenoid valve connected to interface II of the three-way pipe, an air pump connected to interface III of the three-way solenoid valve, and a water pump connected to interface IV of the three-way pipe.

[0010] Preferably, a one-way valve I is provided between the liquid flow meter and the three-way pipe.

[0011] Preferably, a one-way valve II is provided between the interface II and the three-way solenoid directional valve.

[0012] Preferably, the water-reducing agent storage tank is equipped with a liquid level sensor I, which is electrically connected to the controller.

[0013] Preferably, the water pump inlet is connected to the bottom outlet of the water storage tank, and the water storage tank is equipped with a liquid level sensor II, which is electrically connected to the controller.

[0014] The beneficial effects of this utility model compared with the prior art are as follows:

[0015] This invention allows for parameter input and calculation of the water-reducing agent dosage via a control panel. The controller, based on a liquid flow meter, controls a peristaltic pump to extract the water-reducing agent from the storage tank. Once the extraction amount reaches the specified value, the controller starts an air pump. Compressed air enters the three-way solenoid valve through interface III, then the three-way pipe through interface II, and finally the peristaltic pump and hose through interface I, spraying the residual water-reducing agent into the concrete mixer. After the compressed air is sprayed, the controller starts a water pump, which extracts clean water from the storage tank. The three-way solenoid valve switches the pipeline, and the clean water enters the three-way pipe through interface IV, finally entering the peristaltic pump and hose through interface I for cleaning. Attached Figure Description

[0016] Figure 1 A schematic diagram of a polycarboxylate superplasticizer dosage measurement device;

[0017] Figure 2 A top view schematic diagram of the polycarboxylate superplasticizer dosage ratio measuring device;

[0018] Figure 3 A schematic diagram of the first side view of the polycarboxylate superplasticizer dosage ratio measuring device;

[0019] Figure 4 This is a schematic diagram of the second side view of the polycarboxylate superplasticizer dosage measurement device.

[0020] In the diagram: 1. Water-reducing agent storage tank; 2. Tank cover I; 3. Controller; 4. Liquid flow meter; 5. Three-way pipe; 6. Peristaltic pump; 7. Hose; 8. Three-way solenoid directional valve; 9. Air pump; 10. Water pump; 11. Check valve I; 12. Check valve II; 13. Liquid level sensor I; 14. Water storage tank; 15. Liquid level sensor II; 16. Mobile trolley; 17. Universal casters. Detailed Implementation

[0021] 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 to facilitate understanding by those skilled in the art.

[0022] Please see Figures 1 to 4 This embodiment provides a polycarboxylate superplasticizer dosage ratio measuring device, including:

[0023] Water-reducing agent storage tank 1, with an outlet at the bottom; water-reducing agent storage tank 1 is made of stainless steel and has a tank cover Ⅰ2 on the top;

[0024] Controller 3 is equipped with a control panel for inputting parameters such as total amount of cementitious materials, target dosage range, ambient temperature, and aggregate mud content. It also has a built-in algorithm to automatically calculate the dosage of water-reducing agent. Controller 3 uses a Siemens S7-1200 PLC, and its control panel has a touch screen that can input parameters such as total amount of cementitious materials, target dosage range (0.1%-0.5%), ambient temperature, and aggregate mud content.

[0025] The metering unit includes: a liquid flow meter 4 installed at the outlet, a three-way pipe 5 connected to the liquid flow meter 4, a peristaltic pump 6 connected to interface I of the three-way pipe 5, and a flexible hose 7 connected to the outlet of the peristaltic pump 6. The peristaltic pump 6 adjusts the flow rate according to the instructions of the controller 3. The flexible hose 7 is a corrosion-resistant hose made of Santoprene material.

[0026] The cleaning device includes: a three-way solenoid valve 8 connected to interface II of the three-way pipe 5, an air pump 9 connected to interface III of the three-way solenoid valve 8, and a water pump 10 connected to interface IV of the three-way pipe 5.

[0027] A one-way valve I11 is provided between the liquid flow meter 4 and the three-way pipe 5. The one-way valve I11 is used to prevent backflow and damage to the liquid flow meter 4 during ventilation and flushing.

[0028] A one-way valve II 12 is provided between the interface II and the three-way solenoid directional valve 8. The one-way valve II 12 is used to prevent the water-reducing agent from entering the three-way solenoid directional valve 8.

[0029] The water-reducing agent storage tank 1 is equipped with a level sensor I13, which is electrically connected to the controller 3. The level sensor I13 is used to detect the remaining amount of water-reducing agent in the water-reducing agent storage tank 1.

[0030] The inlet of the water pump 10 is connected to the bottom outlet of the water storage tank 14. A level sensor II 15 is installed inside the water storage tank 14 and is electrically connected to the controller 3. The water storage tank 14 provides clean water to the water pump 10, and the level sensor II 15 is used to detect the remaining water level in the water storage tank 14. The water storage tank 14 is equipped with a tank cover II.

[0031] In this embodiment, the polycarboxylate superplasticizer dosage ratio measuring device is integrated on the mobile cart 16, which is moved by lockable swivel casters 17.

[0032] The final parameter calculation formula in this embodiment is as follows:

[0033] Final dosage = Total amount of cementitious material × Target dosage × (1 + Temperature coefficient + Mud content coefficient)

[0034] The total amount of cementitious materials is in kg; the target dosage is the mass ratio of cementitious materials, which is input according to the type of concrete in actual application.

[0035] The temperature coefficient is corrected as follows:

[0036]

[0037] The mud content coefficient is corrected as follows:

[0038]

[0039] The above data is for illustrative purposes only.

[0040] When using the polycarboxylate superplasticizer dosage ratio measuring device of this utility model:

[0041] 1) Dosing Stage: Controller 3 calculates the required amount of liquid water-reducing agent based on the input amount of cementitious material and the target dosage. The peristaltic pump 6 is started, and the water-reducing agent, after being metered by the flow meter, is injected into the mixer through the hose 7. The flow meter provides real-time data feedback, and controller 3 dynamically adjusts the pump speed to ensure dosing accuracy.

[0042] 2) Cleaning phase: After the addition is completed, controller 3 executes the following sequentially:

[0043] ① Air blowing mode: Switch the three-way solenoid reversing valve 8, start the air pump 9, and use compressed air to blow the residual water-reducing agent in the hose 7 and peristaltic pump 6 into the mixer for reuse for 15 seconds;

[0044] ② Water flushing mode: Start water pump 10, flush the pipes with clean water for 30 seconds, and discharge the wastewater into the recycling tank;

[0045] ③ Secondary air blowing: Restart air pump 9 to blow away any remaining moisture in the pipe for 10 seconds.

[0046] 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 device for measuring the dosage ratio of polycarboxylate superplasticizer, characterized in that, include: A water-reducing agent storage tank (1) has an outlet at the bottom; a controller (3) has a control panel for inputting parameters such as total amount of cementitious material, target dosage range, ambient temperature, and aggregate mud content, and has a built-in algorithm to automatically calculate the dosage of water-reducing agent; a metering unit includes: a liquid flow meter (4) installed at the outlet, a three-way pipe (5) connected to the liquid flow meter (4), a peristaltic pump (6) connected to interface I of the three-way pipe (5), and a hose (7) connected to the outlet of the peristaltic pump (6), the peristaltic pump (6) adjusting the flow rate according to the instructions of the controller (3); a cleaning device includes: a three-way solenoid valve (8) connected to interface II of the three-way pipe (5), an air pump (9) connected to interface III of the three-way solenoid valve (8), and a water pump (10) connected to interface IV of the three-way pipe (5).

2. The polycarboxylic acid water reducer dosage proportioning measuring device according to claim 1, characterized in that, A one-way valve I (11) is provided between the liquid flow meter (4) and the three-way pipe (5).

3. The polycarboxylate superplasticizer dosage proportioning measuring device according to claim 2, characterized in that, A one-way valve II (12) is provided between the interface II and the three-way solenoid directional valve (8).

4. The polycarboxylate superplasticizer dosage proportioning measuring device according to claim 1, characterized in that, The water-reducing agent storage tank (1) is equipped with a liquid level sensor I (13), which is electrically connected to the controller (3).

5. The polycarboxylate superplasticizer dosage proportioning measuring device according to claim 1, characterized in that, The water pump (10) is connected to the bottom outlet of the water storage tank (14). The water storage tank (14) is equipped with a liquid level sensor II (15), which is electrically connected to the controller (3).

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