Intelligent continuous liquid preparation device

Abstract

The utility model relates to the technical field of chemical solution preparation, in particular to an intelligent continuous solution preparation device which comprises a preparation tank and a controller, an upper inlet of the preparation tank is fixedly communicated with a first solution conveying pipeline, a top inlet of the preparation tank is fixedly communicated with a second solution conveying pipeline, and a lower outlet of the preparation tank is fixedly communicated with a solution output pipeline. A remote flow meter and a flow regulating valve are sequentially and fixedly arranged on the first solution conveying pipeline according to the flow direction of a medium, a solution discharging valve is fixedly arranged on the solution output pipeline, and a solution preparation detector, a stirrer and a remote liquid level meter are fixedly arranged on the preparation tank. The solution preparation device is reasonable and compact in structure and convenient to use, in the solution preparation process, the injection speed of a solution is controlled by adjusting the metering pump and the flow adjusting valve, the stirrer is started during solution preparation, meanwhile, the solution concentration is detected in real time through the solution preparation detector, and continuous, stable, accurate and efficient solution preparation on an industrial production site is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical solution preparation, and is an intelligent continuous liquid preparation device. Background Art

[0002] Solution preparation is a basic operation in chemical experiments, the purpose of which is to prepare solutions of specific concentrations and volumes according to experimental requirements. The experimental principles of solution preparation mainly involve the calculation of the molar concentration and mass fraction of the solute, as well as the principle of solution dilution. During the solution preparation process, some key points need to be noted: First, according to the principle of like dissolves like, polar solutes are easily soluble in polar solvents, and non-polar solutes are easily soluble in non-polar solvents. Secondly, the preparation of the solution needs to consider the boiling point, viscosity, surface tension and other properties of the solvent to ensure the uniformity and stability of the prepared solution.

[0003] Nowadays, many industrial sites, especially sewage treatment sites, use chemical solutions, and many chemical solutions require the chemical raw materials to be transported to the site before they can be prepared. In industrial production, there are many methods for continuous solution preparation. For example, one method is to continuously add ultra-high molecular weight polyethylene powder and solvent to a feeder, then extrude it through a short aspect ratio screw extruder, and then mix it in a static mixer, and finally continuously deliver a uniformly mixed solution. Another method is to use an automatic dosing device that can achieve automatic intermittent, continuous operation and pause cross-stirring functions to ensure uniform solution concentration. However, the continuous preparation of solutions in current industrial production has problems such as inaccurate solution concentration and low automation control.

[0004] Therefore, it is very necessary to research and invent an intelligent continuous liquid preparation device to reduce manual participation, efficiently, accurately and automatically complete the solution preparation work, and solve the problems existing in the on-site preparation of chemical solutions. Summary of the Invention

[0005] The utility model provides an intelligent continuous liquid dispensing device, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems of inaccurate solution concentration and low automation control in the existing liquid dispensing devices.

[0006] The technical solution of the utility model is achieved through the following measures: an intelligent continuous liquid dispensing device, including a preparation tank and a controller, the upper inlet of the preparation tank is fixedly connected to a first solution delivery pipeline, the top inlet of the preparation tank is fixedly connected to a second solution delivery pipeline, the lower outlet of the preparation tank is fixedly connected to a solution output pipeline, a solution preparation detector is fixedly arranged on the preparation tank, and the solution preparation detector is electrically connected to the controller.

[0007] The following are further optimizations and / or improvements to the above-mentioned utility model technical solution:

[0008] A metering pump is fixedly installed on the second solution delivery pipeline.

[0009] As needed, during the solution preparation process, the metering pump measures the amount of high-concentration solution or solute injected into the preparation tank. The metering pump can be a metering pump, and the injection speed can be controlled by installing a frequency converter on the metering pump.

[0010] The first solution delivery pipeline is fixedly provided with a remote flow meter and a flow regulating valve in sequence according to the flow direction of the medium, and the solution output pipeline is fixedly provided with a solution discharge valve.

[0011] A stirrer is fixedly arranged on the top of the preparation tank, and a remote liquid level gauge is fixedly arranged on the preparation tank.

[0012] An interlock is provided between the remote flow meter and the flow regulating valve.

[0013] The controller is a PLC controller, and the remote flow meter, flow regulating valve, solution discharge valve, stirrer, and remote liquid level meter are all electrically connected to the PLC controller.

[0014] The utility model has a reasonable and compact structure and is easy to use. A solution preparation detector is fixedly arranged on the preparation tank. The solution preparation detector performs real-time detection on the solution in the preparation tank. After the solution preparation detector passes the detection, the solution is output through the solution output pipeline, thereby realizing continuous, stable, accurate and efficient solution preparation at the industrial production site. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attachment Figure 1 This is a schematic diagram of the process flow of this utility model.

[0016] Attachment Figure 1 The codes are: 1 for the preparation tank, 2 for the metering pump, 3 for the controller, 4 for the first solution delivery pipeline, 5 for the second solution delivery pipeline, 6 for the solution output pipeline, 7 for the solution preparation detector, 8 for the remote flow meter, 9 for the flow regulating valve, 10 for the solution discharge valve, 11 for the agitator, and 12 for the remote liquid level meter. DETAILED DESCRIPTION

[0017] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0018] In the present invention, unless otherwise specified, the equipment and devices used are all the equipment and devices known and used in the art.

[0019] In this utility model, for the convenience of description, the relative position relationship of each component is described based on the Figure 1The positional relationships of front, back, top, bottom, left, and right are described in the layout of the manual. Figure 1 The layout direction is determined by the

[0020] The present invention will be further described below in conjunction with the embodiments and accompanying drawings:

[0021] Example 1: As shown in the attached Figure 1 As shown, the intelligent continuous liquid dispensing device includes a preparation tank 1 and a controller 3. The upper inlet of the preparation tank 1 is fixedly connected to a first solution delivery pipeline 4, the top inlet of the preparation tank 1 is fixedly connected to a second solution delivery pipeline 5, the lower outlet of the preparation tank 1 is fixedly connected to a solution output pipeline 6, and a solution preparation detector 7 is fixedly provided on the preparation tank 1, and the solution preparation detector 7 is electrically connected to the controller 3.

[0022] As needed, the solution preparation detector 7 can be a pH meter, conductivity meter, sodium ion detector, or other detection instrument. A low-concentration solution or solvent enters the preparation tank 1 through the first solution delivery pipeline 4, and a high-concentration solution or solute enters the preparation tank 1 through the second solution delivery pipeline 5. The solution preparation detector 7 performs real-time testing on the solution in the preparation tank 1. After the solution preparation detector 7 passes the test, the solution is output through the solution output pipeline 6.

[0023] The above intelligent continuous liquid dispensing device can be further optimized and / or improved according to actual needs:

[0024] Example 2: The difference between it and Example 1 is that: Figure 1 As shown, a metering pump 2 is fixedly installed on the second solution delivery pipeline 5.

[0025] Example 3: The difference between it and Example 1 to Example 2 is that: Figure 1 As shown, a remote flow meter 8 and a flow regulating valve 9 are fixedly installed on the first solution delivery pipeline 4 in sequence according to the flow direction of the medium, and a solution discharge valve 10 is fixedly installed on the solution output pipeline 6.

[0026] Example 4: The difference between it and Example 1 to Example 3 is that: Figure 1 As shown, a stirrer 11 is fixedly provided on the top of the preparation tank 1 , and a remote liquid level gauge 12 is fixedly provided on the preparation tank 1 .

[0027] Example 5: The difference between it and Example 1 to Example 4 is that: Figure 1 As shown, an interlock is provided between the remote flow meter 8 and the flow regulating valve 9.

[0028] Example 6: The difference between it and Example 1 to Example 5 is that: Figure 1As shown, the controller 3 is a PLC controller 3 , and the remote flow meter 8 , the flow regulating valve 9 , the solution discharge valve 10 , the stirrer 11 , and the remote liquid level meter 12 are all electrically connected to the PLC controller 3 .

[0029] As needed, when the solution is prepared in a frequency manner (i.e., one tank is prepared before the next tank is prepared): the solution preparation amount and solution concentration are input to the controller 3. The controller 3 calculates and sets the amount of solvent and solute to be input into the preparation tank 1 based on the output solution concentration and the preparation amount. The solution discharge valve 10 is closed, the flow control valve 9 is opened, and the solvent begins to enter the preparation tank 1. At the same time, the remote flow meter 8 is reset and begins cumulative metering. When the solvent entering the preparation tank 1 reaches the required amount of solvent, the flow control valve 9 is closed. During the solution preparation process, the speed of solvent entering the preparation tank 1 is controlled by controlling the opening of the flow control valve 9. The metering pump 2 is started to inject the solute into the preparation tank 1 according to the preset solute amount. After the solute begins to enter, the stirrer 11 is started. At the same time, the solution concentration is detected by the solution preparation detector 7. When the solution concentration reaches the preset concentration, the metering pump 2 is controlled to be closed. After stirring for the required time, the solution preparation detector 7 detects whether the concentration meets the preset concentration. If the concentration is insufficient, the metering pump 2 is started again to add solute to the solution. The solute preset in advance during the frequency preparation process is used as the basic reference value, and the solution preparation detector 7 is the concentration feedback measurement value. By comparing and analyzing the basic reference value and the concentration feedback measurement value, an accurate liquid preparation formula is obtained. When performing frequency preparation subsequently, a new solution can be prepared according to the liquid preparation formula.

[0030] After the liquid preparation formula is obtained through frequency preparation and is verified through one or more frequency preparations, uninterrupted liquid preparation can be performed, that is, the solvent is injected into the preparation tank 1 at a flow rate according to the formula amount.

[0031] As needed, the pipelines and equipment of the intelligent continuous liquid dispensing device can also be equipped with conventional valves, thermometers and pressure gauges known in the art according to production needs. The model of the PLC controller can be Siemens S7-200 Smart controller.

[0032] The above technical features respectively constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the requirements of different situations.

[0033] The usage process of the embodiment of the present utility model is as follows: first, the preparation amount of the solution and the concentration of the solution are input into the controller 3; then, the solution discharge valve 10 is closed, the flow regulating valve 9 is opened, the solvent begins to enter the preparation tank 1, and the metering pump 2 is started to inject the solute into the preparation tank according to the preset solute mass; finally, after the solution preparation detector 7 detects and passes the test, it is output through the solution output pipeline 6.

Claims

1. An intelligent continuous liquid dispensing device, characterized in that It includes a preparation tank and a controller. The upper inlet of the preparation tank is fixedly connected to the first solution delivery pipeline, the top inlet of the preparation tank is fixedly connected to the second solution delivery pipeline, the lower outlet of the preparation tank is fixedly connected to the solution output pipeline, and a solution preparation detector is fixedly installed on the preparation tank, and the solution preparation detector is electrically connected to the controller.

2. The intelligent continuous liquid dispensing device according to claim 1, characterized in that A metering pump is fixedly installed on the second solution delivery pipeline.

3. The intelligent continuous liquid dispensing device according to claim 1 or 2, characterized in that A remote flow meter and a flow regulating valve are fixedly arranged on the first solution delivery pipeline in sequence according to the flow direction of the medium, and a solution discharge valve is fixedly arranged on the solution output pipeline.

4. The intelligent continuous liquid dispensing device according to claim 1 or 2, characterized in that A stirrer is fixedly installed on the top of the preparation tank, and a remote liquid level gauge is fixedly installed on the preparation tank.

5. The intelligent continuous liquid dispensing device according to claim 3, characterized in that A stirrer is fixedly installed on the top of the preparation tank, and a remote liquid level gauge is fixedly installed on the preparation tank.

6. The intelligent continuous liquid dispensing device according to claim 3 or 5, characterized in that An interlock is set between the remote flow meter and the flow control valve.

7. The intelligent continuous liquid dispensing device according to claim 4, characterized in that An interlock is set between the remote flow meter and the flow control valve.

8. The intelligent continuous liquid dispensing device according to claim 4, characterized in that The controller is a PLC controller, and the remote flow meter, flow regulating valve, solution discharge valve, stirrer, and remote liquid level meter are all electrically connected to the PLC controller.

9. The intelligent continuous liquid dispensing device according to claim 5 or 7, characterized in that The controller is a PLC controller, and the remote flow meter, flow regulating valve, solution discharge valve, stirrer, and remote liquid level meter are all electrically connected to the PLC controller.

10. The intelligent continuous liquid dispensing device according to claim 6, characterized in that The controller is a PLC controller, and the remote flow meter, flow regulating valve, solution discharge valve, stirrer, and remote liquid level meter are all electrically connected to the PLC controller.

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