A smart control dosing device

Abstract

This utility model relates to the field of water treatment technology, and in particular to an intelligent control dosing device, including a mixing tank. The inner wall of the mixing tank is equipped with dosing components, and a mounting plate is installed on one side wall of the mixing tank. This utility model controls the lifting stroke of a metering cylinder via an electric actuator. When the metering cylinder descends below the water level, it draws the chemical solution by gravity. After rising to a specific position, the chemical solution is again discharged under gravity through a corresponding cylindrical groove, a circular hole, and an outlet pipe, achieving quantitative dosing. Three sets of dosing components are arranged side-by-side on the crossbeam. According to actual needs, all three sets can be selected for simultaneous dosing, significantly improving work efficiency and meeting the needs of large-scale production scenarios. Alternatively, designated valves can be flexibly closed, allowing for individual dosing through designated outlet pipes, enhancing the device's versatility and practicality. The inlet pipe and dosing pipe independently transport water and chemicals. Combined with a bottom motor-driven stirring shaft, this ensures thorough mixing of the chemical solution within the mixing tank, effectively avoiding localized uneven concentrations.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to an intelligent control dosing device. Background Technology

[0002] In the field of water treatment, the mixing and quantitative addition of chemical solutions are key steps, which makes a smart control dosing device particularly needed.

[0003] However, traditional dosing devices mostly rely on manual control of valves or float valves for metering. Although some devices are equipped with flow meters, they require complex electrical control systems and are mostly single-channel dosing devices. Furthermore, the mixing method of the drug solution mixing and addition device is singular, resulting in large differences in drug solution concentration and affecting the drug's effectiveness.

[0004] To address the aforementioned problems, an intelligent control dosing device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide an intelligent control dosing device to solve the problems of existing intelligent control dosing devices mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent control dosing device, comprising a mixing tank, wherein a dosing assembly is provided on the inner wall of the mixing tank, and an mounting plate is installed on one side wall of the mixing tank;

[0007] The dosing assembly includes a metering cylinder installed on the inner wall of the mixing tank. A flow guide connector is sealed at the bottom of the mixing tank. A slide rod is installed at the bottom of the metering cylinder. A cylindrical groove is formed on the inner wall of the slide rod, and the top of the cylindrical groove leads to the inner wall of the metering cylinder. A liquid outlet pipe is provided on one side of the slide rod. A circular hole is formed on one side of the cylindrical groove, and the diameter of the liquid outlet pipe matches that of the circular hole, and their positions correspond.

[0008] Preferably, the dosing assembly further includes limiting plates installed at both ends of the metering cylinder, the end of the slide rod is connected to the output end of the electric actuator, a valve is sealed and connected in the middle of the outlet pipe, and a crossbeam is installed at the bottom of the electric actuator, and the crossbeam is welded to the bottom support end of the mixing tank.

[0009] Preferably, the inner wall of the mixing tank is provided with a water level line, a water inlet pipe is sealed and connected to one side of the mixing tank, a dosing pipe is sealed and connected to one end of the water inlet pipe on one side of the mixing tank, and a stirring shaft is installed on the bottom wall of the mixing tank.

[0010] Preferably, the slide rod passes through the flow guide connector and is slidably connected to the flow guide connector, and the top and bottom walls of the flow guide connector are both sealed to the slide rod.

[0011] Preferably, the inlet end of the outlet pipe is located on the inner wall of the flow guide connector and is sealed to the flow guide connector.

[0012] Preferably, the metering cylinder and the limiting plate are both inserted through the inner wall of the mounting plate, and the metering cylinder and the limiting plate are slidably connected to the mounting plate respectively.

[0013] Preferably, when the circular hole corresponds to the liquid outlet pipe, the top of the metering cylinder is higher than the water level line; when the circular hole is misaligned with the liquid outlet pipe, the top of the metering cylinder is lower than the water level line.

[0014] Preferably, both the water inlet pipe and the dosing pipe are located above the water level line.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The metering cylinder is controlled by an electric actuator to lift and lower the cylinder. When the metering cylinder descends below the water level, it uses gravity to draw up the liquid. After rising to a specific position, the liquid is discharged again by gravity through the corresponding cylindrical groove, round hole and outlet pipe. The dosing components of this device can achieve quantitative dosing without a complicated electrical control system.

[0017] 2. Three sets of dosing components are arranged side by side on the crossbeam. According to actual needs, all three sets can be selected to dosing simultaneously, which greatly improves work efficiency and meets the needs of large-scale production scenarios. Alternatively, designated valves can be closed flexibly, and dosing can be done individually through designated outlet pipes, enhancing the versatility and practicality of the device.

[0018] 3. The water inlet pipe and the dosing pipe independently transport water and chemicals. Together with the bottom motor-driven stirring shaft, they ensure that the chemical solution is fully mixed in the mixing tank, effectively avoiding local uneven concentration and ensuring uniform dispersion of the active ingredients in the chemical. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the structure of the dosing assembly of this utility model;

[0022] Figure 4 This is a cross-sectional view of the dosing assembly of this utility model;

[0023] Figure 5 This is a schematic diagram of the connection structure between the mounting plate and the metering cylinder of this utility model.

[0024] In the diagram: 1. Mixing tank; 2. Dosing assembly; 201. Metering cylinder; 202. Flow guide connector; 203. Slide rod; 204. Cylindrical groove; 205. Discharge pipe; 206. Circular hole; 207. Limiting plate; 208. Electric actuator; 209. Valve; 210. Crossbeam; 3. Mounting plate; 4. Water level line; 5. Inlet pipe; 6. Dosing pipe; 7. Stirring shaft. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] Example

[0027] like Figure 3-5 As shown, the dosing assembly 2 includes a metering cylinder 201 installed on the inner wall of the mixing tank 1. A flow guide connector 202 is sealed and installed at the bottom of the mixing tank 1. A slide rod 203 is installed at the bottom of the metering cylinder 201. A cylindrical groove 204 is opened on the inner wall of the slide rod 203, and the top of the cylindrical groove 204 leads to the inner wall of the metering cylinder 201. A liquid outlet pipe 205 is provided on one side of the slide rod 203. A circular hole 206 is opened on one side of the cylindrical groove 204. The diameter of the liquid outlet pipe 205 matches that of the circular hole 206, and their positions correspond. The dosing assembly 2 also includes limiting plates 207 installed at both ends of the metering cylinder 201. The end of the slide rod 203 is connected to the output end of the electric push rod 208. A valve 209 is sealed and connected in the middle of the liquid outlet pipe 205. A crossbeam 210 is installed at the bottom of the electric push rod 208, and the crossbeam 210 is welded to the bottom support end of the mixing tank 1.

[0028] It should be noted that in this embodiment, before the device is started, the electric actuators 208 in the dosing assembly 2 are all in their initial extended state, driving the slide rod 203 and the metering cylinder 201 to move upwards respectively, so that the circular hole 206 on one side of the cylindrical groove 204 on the inner wall of the slide rod 203 is connected to the outlet pipe 205. At this time, the top of the metering cylinder 201 is higher than the water level line 4 on the inner wall of the mixing tank 1, ensuring that the metering cylinder 201 is not submerged in liquid. At the same time, the valve 209 in the middle of the outlet pipe 205 is closed to prevent the medicine from flowing out accidentally. When adding medicine, the electric actuator 208 is activated to retract, driving the slide rod 203 and the metering cylinder 201 to move downwards. Since the slide rod 203 passes through the flow guide connector 202 and is slidably connected, and the top and bottom walls of the flow guide connector 202 are sealed to the slide rod 203, liquid leakage can be effectively prevented during the movement. As the metering cylinder 201 descends to its top below the water level line 205, the electric actuator 208 is activated to retract, driving the slide rod 203 and the metering cylinder 201 to move downwards. Water level 4. The mixed medicine enters the metering cylinder 201 under gravity until the metering cylinder 201 is full, completing the liquid dispensing operation. During this process, the limiting plate 207 slides on the inner wall of the mounting plate 3 to provide guidance and limit for the metering cylinder 201, ensuring its stable movement. After the liquid dispensing operation is completed, the output end of the electric push rod 208 extends and pushes the slide rod 203 and the metering cylinder 201 upward. When the metering cylinder 201 rises to the point where the round hole 206 on one side of the cylindrical groove 204 on the inner wall of the slide rod 203 is connected to the outlet pipe 205, the valve 209 in the middle of the outlet pipe 205 is opened. Under gravity, the medicine in the metering cylinder 201 flows into the designated link through the cylindrical groove 204, the round hole 206, and the outlet pipe 205. Since the flow guide connector 202 is sealed to the inlet end of the outlet pipe 205, combined with the sealing structure of the slide rod 203 and the flow guide connector 202, it is ensured that there is no leakage during the medicine delivery process.

[0029] Among them, the dosing assembly 2 has three sets arranged side by side on the crossbeam 210, which can dosing simultaneously to improve dosing efficiency, or dosing can be done by closing the designated valve 209 and using the designated liquid outlet pipe 205 as needed.

[0030] Furthermore, the connecting end of the electric actuator 208 controls the raising and lowering of the metering cylinder 201 through telescopic control. The retraction stroke of the electric actuator 208 determines the height to which the metering cylinder 201 descends. When the electric actuator 208 retracts to a specific position, the metering cylinder 201 stops descending. At this time, the amount of liquid medicine contained in the metering cylinder 201 is the preset single dosage, so that the medicine can be added quantitatively as needed. In addition, the control process and principle of the electric actuator 208 and valve 209 in this device are mature technologies in the existing field and will not be described here.

[0031] Optionally, a liquid level sensor is added to the upper part of the mixing tank 1 to monitor the liquid level in real time using the ultrasonic ranging principle. An electromagnetic flow meter and a pressure transmitter are installed on the dosing pipe 6 to collect the flow rate and delivery pressure data of the agent, respectively. All instruments are connected to the PLC controller via a bus and can automatically adjust each actuator according to preset parameters. When the metering cylinder 201 performs liquid dispensing or dispensing, the electric actuator 208 is displaced via the bus. During the dispensing stage, a flow regulating valve is added to the outlet pipe 205 to form a feedback loop with the electromagnetic flow meter. The dispensing rate can be adjusted in real time according to the downstream process requirements. This control process and control components are mature technologies in the existing field and will not be described here.

[0032] like Figure 1-2 As shown, the mixture includes a mixing tank 1, a dosing assembly 2 on the inner wall of the mixing tank 1, an installation plate 3 on one side wall of the mixing tank 1, a water level line 4 on the inner wall of the mixing tank 1, a water inlet pipe 5 sealed to one side of the mixing tank 1, a dosing pipe 6 sealed to one end of the water inlet pipe 5 on one side of the mixing tank 1, and a stirring shaft 7 installed on the bottom wall of the mixing tank 1.

[0033] It should be noted that in this embodiment, both the water inlet pipe 5 and the dosing pipe 6 are located above the water level line 4. The water inlet pipe 5 is connected to an external water pump, which delivers water to the mixing tank 1 at a set flow rate and pressure. The metering pump connected to the outside of the dosing pipe 6 draws the medicine from the storage container and delivers it to the mixing tank 1 through the dosing pipe 6. At the same time, the stirring shaft 7 installed on the bottom wall of the mixing tank 1 is driven by a motor at the bottom of the mixing tank 1 to stir and mix the input liquid and medicine, ensuring uniform mixing of the medicine solution. The concentration sensor and water level sensor installed at both ends of the water level line 4 on the inner wall of the mixing tank 1 monitor the concentration and water level data of the mixed liquid in the tank in real time. If a certain concentration of the mixed liquid is high, the sensor will detect the concentration of the mixed liquid and detect the water level. If the concentration of one or more chemical components is lower than the set value, the control system will increase the chemical flow rate in the corresponding dosing pipe 6, that is, increase the output of the corresponding external metering pump. If the concentration is higher than the set value, the corresponding chemical flow rate will be reduced. For water level control, when the water level is lower than the set value, the control system will increase the liquid flow rate in the inlet pipe 5 and increase the output of the external water pump. When the water level is higher than the set value, the liquid flow rate will be reduced. This achieves control of chemical dosing and water intake, ensuring that the concentration of the mixed liquid and the water level meet the set requirements (the monitoring and control process and principle of the concentration sensor and water level sensor and the control system for each power source are existing mature technologies in this field and will not be described here).

[0034] Working principle of this utility model:

[0035] Refer to the instruction manual appendix Figure 1-5First, the water inlet pipe 5 is connected to an external water pump to deliver water to the mixing tank 1 at a set flow rate and pressure. The metering pump connected to the outside of the dosing pipe 6 draws the medicine from the storage container and delivers it to the mixing tank 1 through the dosing pipe 6. At the same time, the stirring shaft 7 installed on the bottom wall of the mixing tank 1 is driven by the motor at the bottom of the mixing tank 1 to stir and mix the input liquid and medicine to ensure that the medicine is mixed evenly.

[0036] After the medicine solution is mixed evenly, the electric actuator 208 is activated to retract, which drives the slide rod 203 and the metering cylinder 201 to move downward. Since the slide rod 203 passes through the flow guide connector 202 and is slidably connected, and the top and bottom walls of the flow guide connector 202 are sealed to the slide rod 203, liquid leakage can be effectively prevented during the movement. As the metering cylinder 201 descends until its top is below the water level line 4, the mixed medicine solution enters the metering cylinder 201 under the action of gravity until the metering cylinder 201 is full, completing the liquid dispensing operation. During this process, the limiting plate 207 slides on the inner wall of the mounting plate 3 to provide guidance and limit for the metering cylinder 201, ensuring its stable movement.

[0037] After the liquid collection operation is completed, the output end of the electric actuator 208 extends and pushes the slide rod 203 and the metering cylinder 201 to move upward. When the metering cylinder 201 rises to the point where the round hole 206 on one side of the cylindrical groove 204 on the inner wall of the slide rod 203 is connected to the liquid outlet pipe 205, the valve 209 in the middle of the liquid outlet pipe 205 is opened. Under the action of gravity, the liquid in the metering cylinder 201 flows into the designated link through the cylindrical groove 204, the round hole 206, and the liquid outlet pipe 205. Since the flow guide connector 202 is sealed to the liquid inlet end of the liquid outlet pipe 205, combined with the sealing structure of the slide rod 203 and the flow guide connector 202, it is ensured that there is no leakage during the liquid delivery process.

[0038] Among them, the dosing assembly 2 has three sets arranged side by side on the crossbeam 210, which can dosing simultaneously to improve dosing efficiency, or dosing can be done by closing the designated valve 209 and using the designated outlet pipe 205 as needed.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart control dosing device comprising a chemical mixing tank (1), characterized in that: The inner wall of the mixing tank (1) is provided with a dosing assembly (2), and a mounting plate (3) is installed on one side wall of the mixing tank (1). The dosing assembly (2) includes a metering cylinder (201) installed on the inner wall of the mixing tank (1). A flow guide connector (202) is sealed at the bottom of the mixing tank (1). A slide rod (203) is installed at the bottom of the metering cylinder (201). A cylindrical groove (204) is opened on the inner wall of the slide rod (203), and the top of the cylindrical groove (204) leads to the inner wall of the metering cylinder (201). A liquid outlet pipe (205) is provided on one side of the slide rod (203). A circular hole (206) is opened on one side of the cylindrical groove (204), and the diameter of the liquid outlet pipe (205) matches that of the circular hole (206), and their positions correspond.

2. The intelligent control dosing device according to claim 1, characterized in that: The dosing assembly (2) also includes limiting plates (207) installed at both ends of the metering cylinder (201), the end of the slide rod (203) is connected to the output end of the electric push rod (208), the middle of the liquid outlet pipe (205) is sealed with a valve (209), and a crossbeam (210) is installed at the bottom of the electric push rod (208), and the crossbeam (210) is welded to the bottom support end of the mixing tank (1).

3. The intelligent control dosing device according to claim 1, characterized in that: The inner wall of the mixing tank (1) is provided with a water level line (4), a water inlet pipe (5) is sealed and connected to one side of the mixing tank (1), a dosing pipe (6) is sealed and connected to one end of the water inlet pipe (5) on one side of the mixing tank (1), and a stirring shaft (7) is installed on the bottom wall of the mixing tank (1).

4. The intelligent control dosing device according to claim 1, characterized in that: The slide rod (203) passes through the flow guide connector (202) and is slidably connected to the flow guide connector (202). The top and bottom walls of the flow guide connector (202) are sealed to the slide rod (203).

5. The intelligent control dosing device according to claim 1, characterized in that: The inlet end of the outlet pipe (205) is located on the inner wall of the flow guide connector (202) and is sealed to the flow guide connector (202).

6. The intelligent control dosing device according to claim 2, characterized in that: The metering cylinder (201) and the limiting plate (207) are both installed on the inner wall of the mounting plate (3), and the metering cylinder (201) and the limiting plate (207) are slidably connected to the mounting plate (3).

7. The intelligent control dosing device according to claim 1, characterized in that: When the circular hole (206) corresponds to the liquid outlet pipe (205), the top of the metering cylinder (201) is higher than the water level line (4). When the circular hole (206) is misaligned with the liquid outlet pipe (205), the top of the metering cylinder (201) is lower than the water level line (4).

8. The intelligent control dosing device according to claim 3, characterized in that: Both the water inlet pipe (5) and the dosing pipe (6) are located above the water level line (4).

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