A reagent circulation contamination simulation test device

Abstract

The utility model relates to fluid testing equipment technical field especially relates to a reagent circulation pollution simulation test device, including base, be provided with liquid supply module and simulation module on the base, liquid supply module contains liquid preparation tank and liquid supply pipe, and the top of jar is set controllable exposure and stirring, aeration subassembly, and the bottom of jar is set pumping device, and the liquid supply pipe selects spiral pipeline in limited space and prolongs fluid path, is favorable to observation flow and deposition, simulation module contains simulation bin and control liquid device, and is communicated with liquid preparation tank through inlet pipe and reflux pipe, forms closed circulation, and temperature control device sets up on liquid supply pipeline, ensures that test temperature is stable, and the device is compact and efficient, can accurately reproduce the temperature of wet tissue liquid adding system, flow rate, turbulence and gas-liquid contact environment, effectively simulates the phenomenon such as deposition, adhesion, microorganism breeding, provides high authenticity laboratory test platform for formula research and development.

Description

Technical Field

[0001] This utility model relates to the field of fluid testing equipment technology, and in particular to a reagent circulation contamination simulation testing device. Background Technology

[0002] In the wet wipe production process, the liquid addition system is the core link to ensure product quality and anti-corrosion effect. A typical liquid addition system consists of a liquid preparation tank, a pumping device, a pipeline system, and a spraying or immersion device. Its function is to evenly apply the reagent containing preservatives to the wet wipe substrate. At present, wet wipe liquid addition systems generally adopt a continuous or intermittent circulation mode: the reagent is pumped out from the liquid preparation tank, transported to the production line through pipelines, and some unused reagent is returned to the liquid preparation tank through the return pipeline, thus forming a closed circulation system.

[0003] In existing technologies, there is a lack of experimental-grade simulation devices specifically optimized for the conditions of wet wipe dispensing systems. Industrial-grade production equipment, due to its large size and high cost, is not suitable for rapid iterative testing in laboratory environments. Although general fluid circulation simulators exist, their designs do not fully consider the complexity of wet wipe dispensing systems and cannot accurately reproduce phenomena such as precipitation, pipe wall adhesion, microbial growth, or volatilization. Furthermore, they generally lack stirring devices to simulate dynamic mixing in production and conditions for multivariate control, resulting in insufficient realism and accuracy of simulation results, which seriously restricts the efficiency of new formula development. In addition, for the challenging testing of anti-corrosion systems, there is a lack of comprehensive simulation methods for sedimentation in pipe dead zones, microbial growth at the gas-liquid interface, shear force during long-distance pipeline transportation, and temperature fluctuations, which makes it easy for laboratory data to deviate from production data.

[0004] Based on the above-mentioned technical problems, this utility model proposes a reagent circulation pollution simulation test device. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a reagent circulation contamination simulation test device to solve the above-mentioned technical problems.

[0006] This utility model is achieved through the following technical solution: a reagent circulation pollution simulation test device, including a base, on which a liquid supply module and a simulation module are provided; The liquid supply module includes a liquid mixing tank and a liquid supply pipe. The liquid mixing tank is connected to an aeration device. The simulation module includes a simulation chamber. The simulation chamber is equipped with a liquid control device and a sample. The bottom of the liquid preparation tank is equipped with a pumping device, the liquid supply pipe is a spiral pipe, and both the liquid supply pipe and the return pipe are connected to the simulation chamber of the simulation module.

[0007] Furthermore, the top of the liquid preparation tank is provided with a semi-enclosed tank cover that can be opened and closed in a controlled manner, and the semi-enclosed tank cover is equipped with a stirring device.

[0008] Furthermore, the stirring device includes a motor fixed to the top of the tank and a stirring head extending into the tank body, the stirring head being located in the reflux area inside the liquid preparation tank.

[0009] Furthermore, the aeration device includes an aeration pipe installed inside the liquid mixing tank. The aeration pipe is fixedly installed on the tank cover of the liquid mixing tank, and aeration holes are opened on the pipe wall. One end of the aeration pipe inside the liquid mixing tank is in a closed state, and the other end is connected to an external air source.

[0010] Furthermore, the outlet end of the pumping device is connected to a supply pipe, which is connected to the inlet pipe at the bottom of the simulation chamber.

[0011] Furthermore, a sediment collector is installed at the bottom of the liquid preparation tank, and the sediment collector is located at the inlet of the pumping device.

[0012] Furthermore, a volatile recovery system is installed on the top of the simulation chamber.

[0013] Furthermore, a sedimentation induction module is provided on the reflux pipe, and the sedimentation induction module is wrapped around the outer wall of the reflux pipe.

[0014] Furthermore, the simulation chamber is equipped with a liquid control device, which is connected to the liquid inlet pipe. The liquid control device includes any one of a spray pipe, an atomizing nozzle, or an immersion tank.

[0015] Furthermore, a temperature control device is provided at any location in the liquid preparation tank, the wall of the liquid supply pipe, or the simulation chamber.

[0016] The beneficial effects of this utility model are as follows: A reagent circulation contamination simulation testing device includes a base, on which a liquid supply module and a simulation module are arranged; the simulation module includes a process simulation structure and a terminal simulation structure, the process simulation structure includes an open simulation structure and a closed simulation structure, the open simulation structure is provided with an aeration device connected to the interfering gas, the terminal simulation structure includes a simulation chamber, in which a liquid control device and a sample are arranged; the open simulation structure also includes a liquid preparation tank, which is connected to an aeration pipe, and a pumping device is arranged at the bottom of the liquid preparation tank; the closed simulation structure includes a liquid supply pipe, which is connected to a return pipe, and both the liquid supply pipe and the return pipe are connected to the simulation chamber of the simulation module. By setting up liquid supply, simulation, and temperature control modules, the actual working conditions of the wet wipe liquid dispensing system are accurately reproduced. The spiral circulation tube structure extends the fluid path within a limited space, significantly enhancing the ability to observe the flow state and precipitation phenomena of reagents. The controllable exposure port of the dispensing tank supports the simulation of different environmental exposure conditions, providing a reliable simulation platform for the performance changes of reagents under different exposure conditions. The overall structure of the device is compact and suitable for rapid iterative testing in the laboratory. It can systematically study key issues such as tube wall adhesion and microbial growth, significantly improving the accuracy and efficiency of wet wipe antiseptic formulation development. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall appearance of the device; Figure 2 This is a schematic diagram of the internal structure of the device.

[0018] In the diagram: 1. Base; 2. Liquid preparation tank; 21. Return pipe; 3. Liquid supply module; 31. Liquid supply pipe; 32. Sedimentation induction module; 33. Pump outlet; 34. Sediment collector; 35. Circulation pump; 4. Simulation module; 41. Liquid inlet pipe; 42. Spray pipe; 43. Simulation chamber; 5. Volatilization recovery system; 6. Motor; 61. Stirring head; 62. Aeration pipe; 7. Temperature control device. Detailed Implementation

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1 like Figure 1-2 As shown in the figure, this embodiment discloses a reagent circulation contamination simulation test device, including a base 1, a liquid supply module 3 installed above the base 1, and a simulation module 4 installed above the liquid supply module 3.

[0022] The liquid supply module 3 includes a liquid storage device and a closed simulation structure. The liquid storage device includes a liquid preparation tank 2, which is fixedly installed on the base 1. The upper part of the liquid preparation tank is connected to the closed simulation structure. The closed simulation structure includes a liquid supply pipe 31 and a pumping device at the bottom of the liquid preparation tank 2. The liquid supply pipe 31 is a spiral pipe, or a spiral pipe or other liquid supply pipe can also be selected. The pumping device is a circulating pump 35, which can be a peristaltic pump, centrifugal pump or magnetic pump, etc. Its flow rate adjustment range is 0.05-10 L / min, which is used to accurately pump the reagent from the liquid preparation tank.

[0023] The supply tube 31 is an integrated spiral circulating transparent tube, which can be made of PETG, PVC, or silicone. The supply tube 31 is made with a diameter of 3-20 mm and a length of 0.5-10 m, forming a closed circulation loop. The spiral structure not only extends the fluid path within the limited longitudinal space and increases the residence time of the reagent in the tube, but also facilitates the observation of the adhesion and sedimentation behavior of particles with different specific gravities through centrifugation. It facilitates the observation of reagent flow and precipitation formation. The supply tube 31 is connected to the circulation pump 35, and a temperature control device 7 is installed on the supply tube 31 between the supply tube 31 and the circulation pump 35 to precisely control the test temperature within a certain range. Furthermore, the inner wall of the tube can be coated with a coating simulating the production tube material, such as stainless steel, ceramic, or polymer, with a thickness ranging from 0.05-1 mm, to study the influence of different materials on precipitation adhesion.

[0024] After passing through the supply pipe 31, the reagent enters the simulation module 4 through the inlet pipe 41. The simulation module 4 includes a simulation chamber 43, which is connected to the supply pipe 31. A liquid control device is installed in the simulation chamber 43, which can be a spray pipe 42, an atomizing nozzle, or an immersion tank, etc. By selecting different liquid control methods, the contact stage between the reagent and air during the production process can be realistically reproduced. A return pipe 21 is also installed at the bottom of the simulation chamber 43, allowing the reagent in the simulation chamber 43 to re-enter the mixing tank 2 through the return pipe 21. A precipitation induction module 32 is installed on the return path to accelerate the simulated precipitation process, facilitating the study of the precipitation formation mechanism.

[0025] The top of the mixing tank 2 is equipped with a controllable opening and closing exposure port. A semi-circular movable sealing cover and a semi-circular fixed cover are installed on the top of the mixing tank 2. By opening the movable sealing cover, the situation where the reagent is directly exposed to air during the preparation stage can be simulated. A stirring device and an air injection device 62 are installed on the semi-circular fixed cover. The stirring device includes a stirring motor 6 and a stirring head 61. The stirring head 61 is mounted on the motor shaft and is located in the reflux zone of the upper part of the mixing tank to more realistically simulate the mixing state in production. The aeration pipe 62 is connected to an external air pump to inject air into the mixing tank 2, increasing the contact between the reagent and air, thereby accelerating the reaction process. Furthermore, the air injection into the mixing tank 2 by the aeration pipe 62 is discontinuous, which, in conjunction with the stirring head 61, creates turbulent flow of the reagent in the mixing tank 2, simulating the dynamic mixing state of the reagent in actual production.

[0026] A sediment collector 34 is installed at the bottom of the liquid preparation tank 2. The sediment collector 34 is installed above the pumping port 33 of the circulating pump 35. The sediment collector 34 is equipped with a filter screen with a mesh size of 50-500 mesh. The sediment collector 34 is used to efficiently collect the precipitated sediment for subsequent analysis.

[0027] A status acquisition device is installed in simulation chamber 43. The status acquisition device consists of multiple sensors to facilitate the recording of various status parameters of the reagent during the circulation process.

[0028] When using this device to conduct a cyclic contamination simulation test on the reagents, first add the reagents to be tested into the mixing tank 2 in a certain proportion. Then, the stirring head 61 driven by the motor 6 in the stirring device is stirred thoroughly to make the reagents evenly mixed. At the same time, according to actual needs, an external air pump can be connected to the air injection device 62 to inject an appropriate amount of air into the mixing tank 2 to increase the contact between the reagents and the air and accelerate the reaction process.

[0029] The circulation pump 35 is turned on, pumping the reagent from the preparation tank 2 into the supply pipe 31 through the supply pipe 31. Since the circulation pipe is a one-piece transparent pipe with an inner wall coated to simulate the material used in production, the flow of the reagent and the formation of precipitation can be clearly observed as the reagent flows through the spiral section. By replacing the pipe with one of different materials, the effects of different materials on precipitation adhesion can be studied. The temperature control device 7 installed between the supply pipe 31 and the circulation pump 35 precisely controls the test temperature, ensuring that the test is conducted within the set temperature range.

[0030] After passing through the supply pipe 31, the reagent enters the simulation chamber 43 via the inlet pipe 41. The corresponding stages of the production process are realistically replicated through spraying, atomizing nozzles, or immersion. After completing the simulation process, the reagent in the simulation chamber 43 re-enters the mixing tank 2 through the return pipe 21. The precipitation induction module 32, located on the return path, accelerates the simulated precipitation process, facilitating the study of the precipitation formation mechanism. During reagent circulation, the precipitate collector 34 collects the precipitated material for subsequent analysis. Through the above operating procedure, this device can be used to simulate reagent circulation contamination. By controlling different variables, this testing device can generate diverse test results, providing rich data support for in-depth research on reagent circulation contamination processes.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A reagent circulation contamination simulation testing device, characterized in that, Includes a base (1), on which a liquid supply module (3) and a simulation module (4) are provided; The liquid supply module (3) includes a liquid mixing tank (2) and a liquid supply pipe (31). The liquid mixing tank (2) is connected to an aeration device. The simulation module (4) includes a simulation chamber (43). The simulation chamber (43) is equipped with a liquid control device and a sample. The liquid preparation tank (2) is equipped with a pumping device at the bottom. The liquid supply pipe (31) is a spiral pipe. The liquid supply pipe (31) and the return pipe (21) are both connected to the simulation chamber (43) of the simulation module (4).

2. The reagent circulation contamination simulation test device according to claim 1, characterized in that, The liquid preparation tank (2) is equipped with a semi-closed tank cover that can be opened and closed in a controlled manner, and a stirring device is provided on the semi-closed tank cover.

3. The reagent circulation contamination simulation test device according to claim 2, characterized in that, The stirring device includes a motor (6) fixed to the top of the tank and a stirring head (61) extending into the tank body. The stirring head (61) is located in the reflux area inside the liquid preparation tank (2).

4. The reagent circulation contamination simulation test device according to claim 2, characterized in that, The aeration device includes an aeration pipe (62) installed inside the liquid mixing tank (2). The aeration pipe (62) is fixedly installed on the tank cover of the liquid mixing tank (2), and aeration holes are opened on the pipe wall of the aeration pipe (62). One end of the aeration pipe (62) inside the liquid mixing tank (2) is closed, and the other end is connected to an external air source.

5. The reagent circulation contamination simulation test device according to claim 1, characterized in that, The outlet end of the pumping device is connected to the supply pipe (31), and the supply pipe (31) is connected to the inlet pipe (41) at the bottom of the simulation chamber (43).

6. The reagent circulation contamination simulation test device according to claim 1, characterized in that, The bottom of the liquid preparation tank (2) is equipped with a sediment collector (34), which is located at the inlet of the pumping device.

7. The reagent circulation contamination simulation test device according to claim 1, characterized in that, The top of the simulation chamber (43) is equipped with a volatilization recovery system (5).

8. The reagent circulation contamination simulation test device according to claim 1, characterized in that, A sedimentation induction module (32) is provided on the reflux pipe (21), and the sedimentation induction module (32) covers the outer wall of the reflux pipe (21).

9. The reagent circulation contamination simulation test device according to claim 1, characterized in that, The simulation chamber (43) is equipped with a liquid control device, which is connected to the liquid inlet pipe (41). The liquid control device includes any one of a spray pipe (42), an atomizing nozzle, or an immersion tank.

10. The reagent circulation contamination simulation test device according to claim 1, characterized in that, A temperature control device (7) is provided at any location on the wall of the liquid preparation tank (2), the liquid supply pipe (31), or the simulation chamber (43).

Images