A rossler foam instrument

Abstract

The application discloses a Ross foam tester, which comprises a liquid separator and a test piece, wherein the test piece is arranged below the liquid separator, the test piece is communicated with the liquid separator, a sample inlet pipe is arranged on the side of the test piece away from the liquid separator, the sample inlet pipe is used for allowing a to-be-tested solution to flow into the test piece, and a foam filter is arranged in the sample inlet pipe and used for filtering the to-be-tested solution.

Description

Technical Field

[0001] This application relates to the field of experimental apparatus technology, and in particular to a Roche foam apparatus. Background Technology

[0002] Foam, as a gas dispersion system in a liquid, possesses a simple structure yet boasts wide-ranging applications and has been widely used in numerous industrial and technological fields. In practical applications, the foaming properties of foaming agents and the stability of foam are the primary criteria for evaluating their performance. Foaming properties reflect the ease with which a foaming agent generates foam and the volume of foam produced; while foam stability refers to the persistence of foam after its formation, typically measured by the time from foam formation to collapse. Currently, there are many methods for testing foam performance, such as the airflow method, stirring method, and vibration method. Among these, the Ross-Miles method, adopted by the national standard GB / T 7462-94 "Determination of Foaming Power of Surfactants - Improved Ross-Miles Method," is also a testing method used by many researchers.

[0003] Current Roche foam assays rely on a Roche foam apparatus. This method requires pre-filling a portion of the test solution into a jacketed sleeve, then dropping another portion of the solution from a certain height to form foam, thus testing the foaming properties and foam stability of the solution. However, due to the large volume and long distance between the top and bottom of the jacketed sleeve, foam easily forms on the surface of the test solution, requiring a considerable amount of time to dissipate. This complicates the filling process and reduces experimental efficiency. Utility Model Content

[0004] This application aims to at least solve one of the aforementioned technical problems existing in the prior art. Therefore, the purpose of this application is to provide a Roche foam analyzer that can perform foam filtration on the test solution flowing into the test piece during the initial filling stage, reducing the formation of foam on the surface of the test solution after it enters the test piece, reducing the waiting time for foam to dissipate, simplifying the filling process, saving testing time, and improving experimental efficiency.

[0005] The Roche foam apparatus according to an embodiment of this application includes: Liquid dispensing components; The test piece is disposed below the dispensing component and is in communication with the dispensing component. An injection tube is disposed on the side of the test piece away from the dispensing component. The injection tube is used to allow the test solution to enter the test piece. A foam filter is disposed inside the injection tube to filter the test solution.

[0006] The Roche foam analyzer according to the embodiments of this application has at least the following beneficial effects: An inlet tube is provided on the side of the test piece away from the dispensing element, allowing the test solution to flow into the bottom of the test piece from the inlet tube over a short distance, reducing the foaming phenomenon caused by excessively high injection distances in traditional injection methods. Furthermore, a foam filter is provided inside the inlet tube, which can filter the foam of the test solution flowing into the test piece during the initial filling stage, reducing the formation of foam on the surface of the test solution after it enters the test piece, reducing the waiting time for foam to dissipate, simplifying the filling process, saving testing time, and improving experimental efficiency.

[0007] According to some embodiments of this application, the injection tube includes an open section disposed at one end away from the test piece, and the open section is configured as a funnel.

[0008] According to some embodiments of this application, the injection tube further includes a spiral section disposed between the opening section and the foam filter element, the spiral section being used to reduce the flow rate of the solution to be tested.

[0009] According to some embodiments of this application, the foam filter element is provided with a plurality of filter holes, which are used to filter the foam of the solution to be tested.

[0010] According to some embodiments of this application, the injection tube is provided with a stopcock, which is disposed between the test specimen and the foam filter, and the stopcock is used to open or close the injection tube.

[0011] According to some embodiments of this application, the test piece includes an inner layer, and the inner layer is provided with scale lines.

[0012] According to some embodiments of this application, the scale line includes a minimum line, which is disposed on the side of the test piece away from the dispensing component. Along the axial direction of the test piece, the location of the connection between the injection tube and the test piece is higher than the location of the minimum line.

[0013] According to some embodiments of this application, the scale line further includes a maximum line, and the bottom of the dispensing element is flush with the maximum line.

[0014] According to some embodiments of this application, a connector is provided at one end of the test piece near the liquid dispensing component, and the liquid dispensing component is plugged into the connector.

[0015] According to some embodiments of this application, the central axis of the dispensing element is collinear with the central axis of the test piece.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the Roche foam apparatus according to an embodiment of this application; Figure 2 for Figure 1 The diagram shows the structural schematic of the Roche foam test piece. Figure 3 for Figure 2 The diagram shows the structure of the first sample inlet tube of the test piece. Figure 4 for Figure 2 The diagram shows the structural schematic of the foam filter element in the test piece. Figure 5 for Figure 1 The diagram shows the structure of the dispensing component of the Roche foam analyzer.

[0018] Figure reference numerals: 100, dispensing device; 110, second injection tube; 120, third stopcock; 130, fourth stopcock; 140, flow meter; 150, second graduation mark; 200. Test piece; 210. First inlet tube; 211. Open section; 212. Spiral section; 220. Foam filter element; 230. First stopcock; 240. Inner layer; 250. First graduation line; 251. Lowest line; 252. Highest line; 260. Outer layer; 261. Outlet; 262. Inlet; 270. Circulation chamber; 280. Second stopcock; 300. Constant temperature water bath; 310. Inlet pipe; 320. Outlet pipe; 400. Connectors; 500. Gas cylinder; 510. First gas tube; 520. First needle valve; 600. Intake buffer bottle; 700, Second trachea; 710, Main trachea; 720, First bronchus; 730, Second bronchus; 740, Second needle valve; 750, First pressure gauge; 760, Third needle valve; 800, Exhaust buffer bottle; 810, Third air tube; 820, Second pressure gauge; 830, Fourth needle valve. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0023] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] Reference Figure 1 , Figure 2 An embodiment of this application provides a Roche foam analyzer, including a dispensing element 100 and a test element 200. The test element 200 is disposed below the dispensing element 100 and is in communication with the dispensing element 100. A first injection tube 210 is disposed on the side of the test element 200 away from the dispensing element 100. The first injection tube 210 is used to allow the solution to be tested to enter the test element 200. A foam filter element 220 is disposed inside the first injection tube 210 and is used to filter the solution to be tested.

[0025] Specifically, a first injection tube 210 is provided on the side of the test piece 200 away from the dispensing unit 100. The test solution can flow into the bottom of the test piece 200 from the first injection tube 210 over a short distance, reducing the foaming phenomenon caused by excessive injection distance in traditional injection methods. In addition, a foam filter 220 is provided inside the first injection tube 210, which can filter the foam of the test solution flowing into the test piece 200 at the initial stage of filling, reducing the formation of foam on the surface of the test solution after entering the test piece 200, reducing the waiting time for the foam to dissipate, simplifying the filling process, saving testing time, and improving experimental efficiency.

[0026] Reference Figure 2 , Figure 3 In some embodiments, the first injection tube 210 includes an opening section 211, which is located at the end away from the test piece 200. The opening section 211 is funnel-shaped, which can be adapted to the filling operation of the test solution. The test solution can be introduced into the first injection tube 210 without the need for auxiliary tools such as glass rods, which simplifies the injection operation steps of the test solution, reduces the operation difficulty in the injection process, improves the convenience of the injection operation, reduces the risk of solution spillage during the injection process, and further optimizes the experimental operation process.

[0027] Reference Figure 2 , Figure 3 In some embodiments, the first injection tube 210 further includes a helical section 212, which is disposed between the open section 211 and the foam filter element 220. The helical section 212 is used to reduce the flow rate of the test solution. Specifically, the helical section 212 is connected to both the open section and the foam filter element 220. When the test solution enters the helical section 212 from the open section 211, the helical section 212 can reduce the flow rate of the test solution, making the test solution flow smoothly and reducing the occurrence of air bubbles due to excessive flow rate during the filling process, thus reducing the probability of foaming during filling. At the same time, the test solution flowing down through the helical section 212 flows into the foam filter element 220, which can perform foam filtration on the solution to further remove any air bubbles that may be present in the solution. This reduces the foam content in the test solution from both the flow rate control and filtration perspectives, avoiding interference from foam in subsequent tests and improving the stability and efficiency of the experimental operation.

[0028] Reference Figure 3 , Figure 4In some embodiments, the foam filter element 220 is provided with multiple filter holes for filtering foam from the test solution. Specifically, the filter holes can perform a filtering function as the test solution flows through them, blocking the foam in the solution and intercepting it on one side. This prevents the foam from continuing to flow into the test element 200 with the test solution, thereby further reducing the foam content in the test solution and minimizing the interference of foam on the subsequent foaming and foam stability test results, ensuring the accuracy of the test data. At the same time, it works in conjunction with the spiral section 212 of the first sample inlet tube 210 to achieve a synergistic effect of flow rate control and foam filtration, optimizing the foam generation problem during the filling process and improving experimental efficiency.

[0029] In some embodiments, the foam filter element 220 is made of sponge material. Of course, in actual design, the material of the foam filter element 220 can be designed according to actual needs.

[0030] Reference Figure 2 , Figure 3 In some embodiments, the first injection tube 210 is provided with a first stopcock 230, which is positioned between the test piece 200 and the foam filter 220. The first stopcock 230 is used to open or close the first injection tube 210. When the first stopcock 230 is opened, the first injection tube 210 is connected to the test piece 200, and the test solution is poured into the first injection tube 210. The test solution enters the bottom of the test piece 200 to complete the filling. When the first stopcock 230 is closed, the passage between the first injection tube 210 and the test piece 200 is disconnected. This prevents the test solution or foam in the test piece 200 from flowing back into the first injection tube 210 during the test, and also prevents external impurities from entering the interior of the test piece 200. In addition, the first stopcock 230 on the first injection tube 210 is located close to the test piece 200. When filling, the first stopcock 230 is rotated open. After the test solution is filled to the preset volume of the test piece 200, closing the first stopcock 230 can cut off the connection between the test piece 200 and the first injection tube 210. At the same time, it can isolate the solution in the first injection tube 210 from the solution in the test piece 200, preventing the solution in the first injection tube 210 from affecting the temperature of the solution in the test piece 200 during the constant temperature water bath, and ensuring that the test solution in the test piece 200 always maintains the constant temperature conditions required for the experiment.

[0031] In some embodiments, the first stopcock 230 is a glass stopcock. Of course, in actual design, the structure of the first stopcock 230 can be designed according to actual needs.

[0032] Reference Figure 1 , Figure 2In some embodiments, the test piece 200 includes an inner layer 240 with a first scale line 250, which can intuitively present the initial volume of the test solution inside the test piece 200 and the change in foam height after the solution foams. Experimental data can be read without additional measuring tools, simplifying the operation process of experimental data recording, reducing errors in the data reading process, providing a basis for the quantitative analysis of solution foaming and foam stability, and improving the convenience of experimental operation and the accuracy of data recording.

[0033] Reference Figure 1 , Figure 2 In some embodiments, the first graduation line 250 includes a minimum line 251, which is located on the side of the test piece 200 away from the dispensing component 100. Along the axial direction of the test piece 200, the connection point between the first injection tube 210 and the test piece 200 is higher than the position of the minimum line 251. This ensures that after the test solution enters the test piece 200 through the first injection tube 210, it can be filled to the position of the minimum line 251, ensuring that the filling volume meets the initial volume requirements of the test solution. This avoids situations where the experimental conditions are not met due to insufficient filling to the minimum graduation, ensuring the standardization and consistency of the experimental operation, and facilitating the smooth conduct of subsequent tests on the foaming properties and foam stability of the solution.

[0034] Reference Figure 1 , Figure 2 In some embodiments, the first graduation line 250 further includes a maximum line 252, which is ring-shaped. The bottom of the dispensing component 100 is flush with the maximum line 252, meeting the experimental requirements. The dispensing component 100 drips the test solution into the test piece 200 from the maximum line 252, conforming to the testing standards and meeting the experimental environment requirements. This makes the foaming process of the test solution more in line with the specifications, providing conditions for measuring the foaming properties and foam stability of the test solution. At the same time, it facilitates the experimenter to quickly calibrate the solution volume and drip height, simplifies the experimental operation process, and improves the standardization and convenience of the experimental operation.

[0035] In some embodiments, the highest line 252 of the first scale line 250 is set to 450mm, and the lowest line 251 of the first scale line 250 is set to 50mm. Of course, in actual design, the numerical values ​​represented by the highest line 252 and the lowest line 251 of the first scale line 250 can be designed according to actual needs.

[0036] Reference Figure 1 , Figure 2In some embodiments, the test piece 200 includes an outer layer 260 disposed outside the inner layer 240. A circulation chamber 270 is provided between the outer layer 260 and the inner layer 240. An outlet 261 is provided on the side of the outer layer 260 near the liquid distribution member 100, and an inlet 262 is provided on the side of the outer layer 260 away from the liquid distribution member 100. Both the outlet 261 and the inlet 262 are connected to the circulation chamber 270. The outlet 261 is connected to the inlet pipe 310 of the constant temperature water bath 300, and the inlet 262 is connected to the outlet pipe 320 of the constant temperature water bath 300. This allows the constant temperature liquid in the constant temperature water bath 300 to enter the circulation chamber 270 through the inlet 262 and then flow back to the constant temperature water bath 300 through the outlet 261, forming a stable constant temperature circulation system. The constant temperature liquid in the circulation chamber 270 provides a constant temperature environment for the test solution in the inner layer 240, avoiding interference from external temperature changes on the solution properties and the test process. This ensures that the test solution maintains the set temperature required for the experiment throughout the entire test cycle, providing the temperature conditions for testing the foaming properties and foam stability of the test solution, and ensuring the accuracy and repeatability of the test results.

[0037] Reference Figure 1 , Figure 2 In some embodiments, a connector 400 is provided at the end of the test piece 200 near the dispensing component 100, and the dispensing component 100 is inserted into the connector 400. Specifically, the connector 400 is a rubber stopper. The rubber stopper has good elasticity and sealing performance, and can tightly fit the connection between the dispensing component 100 and the test piece 200 after insertion, ensuring the sealing of the connection between the two, preventing solution leakage or outside air from entering the interior of the test piece 200 during the test, and maintaining the airtightness and stability of the test environment. At the same time, the insertion of the dispensing component 100 and the connector 400 is simple to operate, enabling quick assembly and disassembly of the dispensing component 100 and the test piece 200, facilitating equipment assembly, cleaning and maintenance before and after the experiment, and improving the convenience of experimental operation. In addition, the central axis of the dispensing component 100 is collinear with the central axis of the test piece 200, and the bottom of the dispensing component 100 is located in the exact center of the test piece 200. This ensures that the test solution dripped from the dispensing component 100 falls in the central area of ​​the solution within the test piece 200, preventing the solution from deviating towards the inner wall or edge of the test piece 200 during dripping. This also ensures that the foam formed during the dripping process is evenly distributed within the test piece 200, preventing localized foam accumulation or uneven distribution.

[0038] Reference Figure 1 , Figure 2In some embodiments, a second stopcock 280 is provided at the end of the test piece 200 away from the dispensing member 100, which can be used to open or close the bottom of the test piece 200. After the experiment, opening the second stopcock 280 can drain the solution inside the test piece 200 without disassembling the test piece 200 or using other auxiliary tools, simplifying the solution cleaning process after the experiment.

[0039] In some embodiments, the second stopcock 280 is configured as a glass stopcock. Of course, in actual design, the structure of the second stopcock 280 can be designed according to actual needs.

[0040] Reference Figure 1 In some embodiments, the Roche foam analyzer further includes a gas cylinder 500 and an inlet buffer bottle 600. The gas cylinder 500 is connected to the inlet buffer bottle 600 via a first gas pipe 510, and the inlet buffer bottle 600 is connected to the dispensing unit 100 and the test piece 200 via a second gas pipe 700. This allows the gas output from the gas cylinder 500 to be sequentially delivered through the first gas pipe 510, the inlet buffer bottle 600, and the second gas pipe 700 to the dispensing unit 100 and the test piece 200, creating a stable gas environment for the solution to be tested. Furthermore, the inlet buffer bottle 600 buffers and stabilizes the gas output from the gas cylinder 500, preventing pressure fluctuations or airflow impacts during gas delivery from disturbing the solution to be tested and preventing additional bubbles from affecting the test results. Additionally, in practical design, the type of gas in the gas cylinder 500 can be changed according to actual conditions to ensure that the solution to be tested is in a suitable gas environment.

[0041] Reference Figure 1 In some embodiments, the first gas tube 510 is provided with a first needle valve 520, which can adjust the flow rate and volume of gas delivered from the gas cylinder 500 to the gas inlet buffer bottle 600. By controlling the valve opening, the gas supply parameters required for the experiment can be adapted to avoid the gas delivery being too fast or too slow, which would affect the stability of the test environment. This ensures that the gas pressure and flow rate received by the gas inlet buffer bottle 600 are always maintained within the experimental setting range, further improving the controllability of the gas environment and preventing airflow fluctuations from disturbing the solution to be tested or generating additional bubbles.

[0042] Reference Figure 1In some embodiments, the second air tube 700 is divided into a main air tube 710, a first branch air tube 720, and a second branch air tube 730. The main air tube 710 is connected to the air inlet buffer bottle 600. One end of the first branch air tube 720 is connected to the main air tube 710, and the other end of the first branch air tube 720 is connected to the liquid distribution component 100. One end of the second branch air tube 730 is connected to the main air tube 710, and the other end of the second branch air tube 730 is connected to the test piece 200. This allows the main air tube 710 to be connected to the air inlet buffer bottle 600, enabling the first branch air tube 720 to supply gas to the liquid distribution component 100 and the second branch air tube 730 to the test piece 200, thereby achieving gas supply to the liquid distribution component 100 and the test piece 200. In addition, the first bronchus 720 is equipped with a second needle valve 740 and a first pressure gauge 750. The first bronchus 720 can regulate the gas flow rate and volume to the dispensing unit 100, and the first pressure gauge 750 can monitor the gas pressure in the first bronchus 720 in real time, allowing researchers to intuitively understand and quickly calibrate the gas supply parameters. Furthermore, the second bronchus 730 is equipped with a third needle valve 760, which can regulate the gas flow rate and volume to the test piece 200. The inclusion of the second needle valve 740 and the third needle valve 760 allows the gas environment parameters of the dispensing unit 100 and the test piece 200 to be adjusted separately according to experimental needs, meeting their different gas supply requirements.

[0043] In some embodiments, in conjunction with the gas environment provided by the gas cylinder 500, the dripping flow rate of the test solution with different viscosities can be controlled by adjusting the gas pressure in the liquid distribution component 100. This enables the testing of the foaming performance of the foaming agent under different gas environments and different dripping flow rates, and can also simulate different usage scenarios of the foaming agent.

[0044] Reference Figure 1 , Figure 5 In some embodiments, the dispensing element 100 is configured as a dispensing funnel, and a second sample inlet tube 110 is provided on the side of the dispensing element 100. The second sample inlet tube 110 is connected to the dispensing element 100, and the solution to be tested can be filled into the dispensing element 100 through the second sample inlet tube 110. The addition of the solution to be tested can be completed without disassembling the dispensing element 100 or using other auxiliary structures, simplifying the filling operation process of the dispensing element 100. In addition, the second sample inlet tube 110 is provided with a third stopcock 120. Opening the third stopcock 120 during filling ensures that the solution flows into the dispensing element 100. After filling, closing the third stopcock 120 seals the second sample inlet tube 110, preventing the solution in the dispensing element 100 from leaking or allowing external air or impurities to enter the interior of the dispensing element 100, thus maintaining the stability of the solution state and the testing environment inside the dispensing element 100.

[0045] In some embodiments, the third stopcock 120 is a glass stopcock. Of course, in actual design, the structure of the third stopcock 120 can be designed according to actual needs.

[0046] Reference Figure 1 , Figure 5 In some embodiments, a fourth stopcock 130 and a flow meter 140 are provided on the side of the dispensing component 100 near the test piece 200, with the flow meter 140 positioned between the fourth stopcock 130 and the test piece 200. The fourth stopcock 130 controls the flow of solution from the dispensing component 100 to the test piece 200, enabling the start and stop of solution dripping and preventing accidental leakage of solution when dripping is not needed, thus avoiding interference with the test. Furthermore, the flow meter 140 can monitor the flow rate of solution from the dispensing component 100 to the test piece 200 in real time, providing researchers with intuitive flow data for reference. This facilitates precise adjustment of the solution dripping rate according to experimental requirements, ensuring that the solution dripping volume and speed meet the test standards.

[0047] In some embodiments, the fourth stopcock 130 is a glass stopcock. Of course, in actual design, the structure of the fourth stopcock 130 can be designed according to actual needs.

[0048] Reference Figure 1 , Figure 5 In some embodiments, the dispensing device 100 is provided with a second scale line 150. The second scale line 150 can intuitively show the volume change of the test solution inside the dispensing device 100. Experimenters can quickly read the remaining amount and dripping amount of the solution in the dispensing device 100 without the need for additional measuring tools, so as to control the volume of the solution dripping into the test piece 200 and ensure that the volume of the dripping solution in each test meets the experimental requirements.

[0049] Reference Figure 1 In some embodiments, the Roche foam apparatus further includes an exhaust buffer bottle 800. The test piece 200 is connected to the exhaust buffer bottle 800 via a third gas pipe 810, which is equipped with a second pressure gauge 820 and a fourth needle valve 830. The second pressure gauge 820 can monitor the gas pressure inside the test piece 200 in real time, allowing experimenters to intuitively grasp the pressure status of the test environment and calibrate it in a timely manner. Simultaneously, the fourth needle valve 830 can adjust the flow rate and volume of gas discharged from the test piece 200 to the exhaust buffer bottle 800, thereby controlling the internal pressure of the test piece 200. Furthermore, the exhaust buffer bottle 800 buffers the gas discharged from the test piece 200, preventing sudden pressure changes during exhaust from disturbing the test solution or disrupting foam stability. Simultaneously, through the monitoring of the second pressure gauge 820 and the regulation of the fourth needle valve 830, the stable pressure environment inside the test piece 200 is maintained as required by the experiment, preventing abnormal pressure from affecting foam formation and stability. This provides controllable pressure conditions for testing the foaming properties and stability of the solution, further improving the accuracy and repeatability of experimental data.

[0050] The experimental steps of the Roche foam apparatus in this application are as follows: 1. Open the first needle valve 520, the second needle valve 740, the third needle valve 760, the fourth needle valve 830 and the fourth stopcock 130 on the air tube, and then open the gas cylinder 500 to fill the entire device container with test gas. Observe the readings of the first pressure gauge 750 and the second pressure gauge 820, and keep the gas pressure in the device at a safe pressure.

[0051] 2. Open the constant temperature water tank and set the test temperature so that the circulating water in the constant temperature water tank fills the circulation cavity 270 between the inner layer 240 and the outer layer 260 of the test piece 200, so that the inside of the test piece 200 is at the test temperature.

[0052] 3. Close the second needle valve 740 and the fourth stopcock 130, open the third stopcock 120, and add the liquid to be tested into the dispensing unit 100 through the second injection tube 110.

[0053] 4. Close the third needle valve 760 and the second stopcock 280, open the first stopcock 230, pour the test solution into the first injection tube 210, and when the test solution enters the bottom of the test piece 200 and reaches its lowest line 251, close the first stopcock 230.

[0054] 5. Open the second needle valve 740 and the fourth stopcock 130 to allow the test solution to drip into the test piece 200. By adjusting the opening and closing of the second needle valve 740 and reading the readings of the first pressure gauge 750 and the flow meter 140, the dripping speed of the test solution can be controlled. Furthermore, increasing the gas flow rate increases the pressure inside the dispensing unit 100, thereby accelerating the speed at which the test solution passes through the flow meter 140. When the test solution is viscous, the gas flow rate can be increased by adjusting the second needle valve 740, thus controlling the speed at which the test solution passes through the flow meter 140. When the test liquid is dilute, the gas flow rate can be decreased by adjusting the second needle valve 740, thus controlling the speed at which the test solution passes through the flow meter 140. This allows for comparison of the foaming ability of different test solutions dripping at the same flow rate.

[0055] 6. The test solution in the dispensing component 100 drips from the highest line 252 of the test piece 200 into the test piece 200. When the test solution in the dispensing component 100 decreases to a preset value, the foaming volume in the test piece 200 can be read through the first scale line 250 on the inner layer 240 of the test piece 200 to obtain the foaming test data of the test solution; at the same time, the time from foam generation to collapse is calculated to obtain the foam stability test data.

[0056] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A Roche foam apparatus, characterized in that, include: Liquid dispensing components; The test piece is disposed below the dispensing component and is in communication with the dispensing component. An injection tube is disposed on the side of the test piece away from the dispensing component. The injection tube is used to allow the test solution to enter the test piece. A foam filter is disposed inside the injection tube to filter the test solution.

2. The Roche foam apparatus according to claim 1, characterized in that, The injection tube includes an open section, which is located at the end away from the test piece and is funnel-shaped.

3. The Roche foam apparatus according to claim 2, characterized in that, The sample inlet tube also includes a spiral section disposed between the open section and the foam filter element, the spiral section being used to reduce the flow rate of the solution to be tested.

4. The Roche foam apparatus according to claim 1, characterized in that, The foam filter element is provided with multiple filter holes, which are used to filter the foam of the solution to be tested.

5. The Roche foam apparatus according to claim 1, characterized in that, The injection tube is equipped with a stopcock, which is positioned between the test specimen and the foam filter element. The stopcock is used to open or close the injection tube.

6. The Roche foam apparatus according to claim 1, characterized in that, The test piece includes an inner layer, and the inner layer is provided with scale lines.

7. The Roche foam apparatus according to claim 6, characterized in that, The scale line includes a minimum line, which is located on the side of the test piece away from the dispensing component. Along the axial direction of the test piece, the connection point between the injection tube and the test piece is located higher than the position of the minimum line.

8. The Roche foam apparatus according to claim 6, characterized in that, The scale line also includes a maximum line, and the bottom of the dispensing component is flush with the maximum line.

9. The Roche foam apparatus according to claim 1, characterized in that, A connector is provided at one end of the test piece near the dispensing component, and the dispensing component is inserted into the connector.

10. The Roche foam apparatus according to claim 1, characterized in that, The central axis of the liquid separator is collinear with the central axis of the test piece.

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