Defoaming performance testing device and method with comparative display function

Abstract

This invention discloses a defoaming performance testing device and method with comparative display function, belonging to the field of defoamer testing technology. It includes: a chassis, a fixed frame, and a fixed top frame; at least two transparent observation tubes are provided between the chassis and the fixed top frame; the bottom of each transparent observation tube has a sealed slide seat, and a hollow slide tube slides within the sealed slide seat. The top of the hollow slide tube extends into the interior of the transparent observation tube and is connected to a rotating head, which has several nozzles. The bottom of the hollow slide tube is connected to the first end of a three-way connector, which also connects to an air injection component and a water injection component. The chassis contains a lifting component connected to the hollow slide tube and a material injection component connected to the transparent observation tube; at least one addition component is provided on the fixed frame and the fixed top frame. This invention can not only conduct comparative testing experiments on different dosages of the same type of defoamer, but also conduct comparative testing experiments on the same dosage of different types of defoamers, with high accuracy and reliability of the test results.

Description

Technical Field

[0001] This invention relates to the field of defoamer testing technology, specifically to a defoamer performance testing device and method with a comparative display function. Background Technology

[0002] Defoamers are widely used in numerous industrial and civilian sectors, including chemical, food, pharmaceutical, and coating industries. Their defoaming performance directly impacts product quality, production efficiency, and production safety; therefore, accurate testing of defoamer performance is crucial. Currently, commonly used defoaming performance testing devices in the industry typically use a measuring cylinder as the core carrier. Foam is generated within the measuring cylinder using a foaming device, and the defoaming process is observed to evaluate the defoaming performance.

[0003] For example, the defoaming and foam-suppressing performance testing device for defoamer used in leachate, as proposed in authorization announcement number CN216160385U, includes a graduated transparent container, a heating device for heating the contents of the container, and a foaming device for foaming the contents of the container. During testing, the slurry to be tested is placed in the transparent container, and then the foaming device is used to foam the slurry. When the foam in the slurry reaches a preset height, the defoamer is added to defoam, and the foam height at different times is recorded. The defoaming and foam-suppressing performance of the defoamer can be tested through the above operation.

[0004] However, the above-mentioned testing device is inconvenient for comparison and requires batch testing and recording to achieve a comparative effect, which is quite cumbersome. In addition, the above-mentioned device uses a foaming device to generate foam. After foaming is completed, the foaming device is removed, but foam is easily attached to the surface of the foaming component when it is removed. During the removal process, some foam will be carried out of the measuring cylinder, causing an unexpected change in the initial foam amount in the measuring cylinder. This will interfere with the accurate measurement of core parameters such as defoaming time and defoaming rate, and affect the reliability of subsequent defoaming test results. Summary of the Invention

[0005] The purpose of this invention is to provide a defoaming performance testing device and method with a comparative display function, so as to solve the problems that the prior art is inconvenient to compare the defoaming effect, and that the prior art will bring out foam when the foaming device is removed after foaming.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0007] A defoaming performance testing device with a comparative display function includes: a chassis, a mounting bracket mounted on the chassis, and a fixed top bracket mounted on the mounting bracket;

[0008] At least two transparent observation tubes are provided between the chassis and the fixed top frame. The bottom of the transparent observation tube is provided with a sealing slide. A hollow slide tube slides inside the sealing slide. The top of the hollow slide tube extends into the interior of the transparent observation tube and is connected to a rotating head. The rotating head is provided with several nozzles. The bottom of the hollow slide tube is connected to the first end of the tee connector.

[0009] The machine housing is equipped with an air injection component connected to the second end of the tee connector and a water injection component connected to the third end of the tee connector; the machine housing is also equipped with a lifting component that drives the hollow slide tube to reciprocate in the vertical direction and an injection component for adding raw material liquid that is connected to the transparent observation tube; the fixed frame and the fixed top frame are equipped with at least one addition component for adding defoamer.

[0010] Furthermore, the nozzle is arranged circumferentially along the rotating head, and the spray direction of the nozzle is along the tangential direction of the rotating head. When the nozzle sprays, it enables the rotating head to rotate at the top of the hollow slide tube.

[0011] Furthermore, the aforementioned lifting assembly includes a drive motor and a threaded rod whose bottom end is connected to the motor shaft of the drive motor; the top end of the threaded rod is rotatably connected to the housing, and the threaded rod is threadedly connected to a lifting frame, which is in sliding engagement with all hollow slide tubes.

[0012] Furthermore, the aforementioned air injection assembly includes an air compressor and an air injection hose connected to the output end of the air compressor; the air injection hose is connected to an air injection manifold, which is connected to the second end of all three-way connectors, and the air injection hose is equipped with a first solenoid valve.

[0013] Furthermore, the aforementioned water injection assembly includes a flushing water tank, a flushing water pump connected to the flushing water tank, and a water injection hose connected to the output end of the flushing water pump; the water injection hose is connected to a water injection distribution pipe, which is connected to the third end of all three-way connectors, and the water injection hose is equipped with a fourth solenoid valve.

[0014] Furthermore, the aforementioned addition component includes two sliding rods, a sliding block slidably disposed on the two sliding rods, an L-shaped dosing tube disposed on the sliding block, and a defoamer storage tank disposed on a fixed top frame; the L-shaped dosing tube is used to add defoamer from the top of the transparent observation tube, and the defoamer storage tank is connected to the L-shaped dosing tube through a metering pump and a dosing hose.

[0015] Furthermore, the aforementioned injection assembly includes a liquid tank, a liquid delivery pump, and a delivery pipe connected in sequence; the delivery pipe is connected to all transparent observation tubes through a connecting pipe, and a third solenoid valve is provided at the position where the connecting pipe connects to the corresponding transparent observation tube.

[0016] Furthermore, the bottom of each of the aforementioned transparent observation tubes is connected to a water outlet branch pipe, and all water outlet branch pipes are connected to a drain pipe. Each water outlet branch pipe is equipped with a second solenoid valve.

[0017] A testing method based on the above-mentioned defoaming performance testing device with comparative display function includes the following steps:

[0018] S1: Add an equal amount of raw material liquid to all transparent observation tubes through the injection assembly;

[0019] S2: Gas is injected into all transparent observation tubes through the gas injection assembly to form foam in the raw material liquid;

[0020] S3: Inject the same type of defoamer but different dosages into all transparent observation tubes by adding components, and evaluate the defoaming performance of different dosages of defoamer according to the defoaming rate; or inject different types of defoamer but the same dosages into all transparent observation tubes by adding components, and evaluate the defoaming performance of different types of defoamer according to the defoaming rate.

[0021] S4: After the test is completed, the raw material liquid is discharged, and cleaning solution is injected into all transparent observation tubes through the water injection component for cleaning.

[0022] Furthermore, in step S2 above, during the air injection process, the lifting assembly drives the rotating head to reciprocate in the vertical direction, and the rotating head rotates when the air is injected to form uniform bubbles;

[0023] In step S4, during the water injection process, the lifting assembly drives the rotating head to reciprocate in the vertical direction, and the rotating head rotates while spraying water.

[0024] The present invention has the following beneficial effects:

[0025] (1) The present invention uses multiple transparent observation tubes to conduct simultaneous detection, which can not only conduct comparative detection experiments on defoamers of the same type but also on defoamers of different types but the same dosage, but also ensure that the experimental conditions are basically consistent during the experiment, thus ensuring the accuracy and reliability of the comparative detection.

[0026] (2) The present invention generates bubbles by gas injection through a rotating head, which has the dual bubble effect of stirring and gas injection. Moreover, the rotating head will not be carried out of the transparent observation tube, avoiding the carry-out of foam and the change of foam surface shape, thereby ensuring the accuracy and reliability of the test results. Attached Figure Description

[0027] Figure 1 This is a front structural diagram of the defoaming performance testing device with comparative display function provided in an embodiment of the present invention.

[0028] Figure 2 This is a schematic diagram of the back structure of the defoaming performance testing device with comparative display function provided in an embodiment of the present invention.

[0029] Figure 3 This is a schematic diagram of the internal structure of the chassis provided in an embodiment of the present invention.

[0030] Figure 4 This is a schematic diagram of the structure of the air injection assembly and water injection assembly provided in an embodiment of the present invention.

[0031] Figure 5 This is a schematic diagram of the internal structure of the transparent observation tube provided in an embodiment of the present invention.

[0032] In the diagram: 1. Chassis; 2. Drain pipe; 3. Door; 4. Liquid tank; 5. Fixing frame; 6. Defoamer storage tank; 7. Sliding rod; 8. Fixed top frame; 9. Transparent observation tube; 10. Rinse water tank; 11. Liquid transfer pump; 12. Feed pipe; 13. Sliding block; 14. Hollow slide tube; 15. Air pump; 16. Air injection hose; 17. First solenoid valve; 18. Drive motor; 19. Lifting frame; 20. T-joint; 21. Threaded rod; 22. Sealing slide; 23. Water outlet branch pipe; 24. Second solenoid valve; 25. Third solenoid valve; 26. Connecting pipe; 27. Metering pump; 28. Additive dosing hose; 29. ​​L-shaped additive dosing pipe; 30. Rinse water pump; 31. Water injection hose; 32. Fourth solenoid valve; 33. Water injection branch pipe; 34. Rotating head; 35. Nozzle; 36. Air injection branch pipe. Detailed Implementation

[0033] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0034] like Figures 1 to 5 As shown, this embodiment provides a defoaming performance testing device with a comparative display function, including a housing 1, a fixed frame 5 mounted on the housing 1, and a fixed top frame 8 horizontally mounted on the fixed frame 5. At least two transparent observation tubes 9 are provided between the housing 1 and the fixed top frame 8, preferably two in number. All transparent observation tubes 9 are arranged in a row, their bottoms extending into and fixed within the housing 1, and their tops fixedly connected to the fixed top frame 8 via clamps. The housing 1 is equipped with an air injection component for injecting air into the transparent observation tubes 9 and a water injection component for injecting cleaning fluid. The housing 1 also includes a material injection component for adding raw material liquid. The fixed frame 5 and the fixed top frame 8 are equipped with at least one addition component for adding defoamer. When the number of addition components is one, the same type but different dosage of defoamer can be added to all transparent observation tubes 9. When the number of addition components is greater than one, the same type or different types of defoamer can be added to all transparent observation tubes 9, with the dosage determined according to requirements.

[0035] The bottom of the transparent observation tube 9 is conical, and a sealing slide 22 is provided at the conical bottom of the transparent observation tube 9. A hollow slide tube 14 is slidably provided inside the sealing slide 22. Specifically, the hollow slide tube 14 slides and cooperates with the sealing slide 22 to achieve static and dynamic sealing. Preferably, a sealing ring is provided on the inner side wall of the sealing slide 22, and the sealing ring is sealed and cooperates with the hollow slide tube 14.

[0036] The top of the hollow slide tube 14 extends into the interior of the transparent observation tube 9 and is connected to a rotating head 34. The rotating head 34 and the hollow slide tube 14 can rotate together, achieving both static and dynamic seals. A sealing ring is preferably used for sealing. The side wall of the rotating head 34 is provided with several nozzles 35, all arranged circumferentially around the rotating head 34, with the spray direction along the tangent of the rotating head 34. When the nozzles 35 spray, the rotating head 34 rotates at the top of the hollow slide tube 14. The sprayed gas not only generates foam evenly but also agitates the air. When the cleaning fluid is sprayed, it thoroughly cleans the inner wall of the transparent observation tube 9. The bottom of the hollow slide tube 14 is connected to the first end of the three-way connector 20.

[0037] To move the rotating head 34 within the transparent observation tube 9, in this embodiment, the housing 1 is equipped with a lifting assembly containing hollow slide tubes 14 that reciprocate vertically. The lifting assembly includes a drive motor 18 installed inside the housing 1 and a threaded rod 21 whose bottom end is connected to the motor shaft of the drive motor 18 via a coupling. The top end of the threaded rod 21 is rotatably connected to the housing 1, and a lifting frame 19 is threadedly connected to the threaded rod 21. The lifting frame 19 is in sliding engagement with all the hollow slide tubes 14. When the drive motor 18 drives the threaded rod 21 to rotate, the lifting frame 19 drives all the hollow slide tubes 14 to reciprocate vertically. Preferably, a guide rod is provided inside the housing 1, and the lifting frame 19 is in sliding engagement with the guide rod. The guide rod improves the stress distribution between the hollow slide tubes 14 and the sealing slide seat 22, preventing leakage.

[0038] The air injection assembly includes an air compressor 15 and an air injection hose 16 connected to the output end of the air compressor 15. The air injection hose 16 is connected to an air injection manifold 36, which is connected to the second end of all tee connectors 20. For ease of control, the air injection hose 16 is equipped with a first solenoid valve 17.

[0039] The water injection assembly includes a flushing water tank 10, a flushing water pump 30 connected to the flushing water tank 10, and a water injection hose 31 connected to the output end of the flushing water pump 30. The water injection hose 31 is connected to a water injection branch pipe 33, which is connected to the third end of all three-way connectors 20. For ease of control, the water injection hose 31 is equipped with a fourth solenoid valve 32.

[0040] Preferably, the air injection hose 16 and the water injection hose 31 are each equipped with a one-way valve to prevent fluid backflow.

[0041] The addition assembly includes two sliding rods 7, a sliding block 13 slidably mounted on the two sliding rods 7, an L-shaped dosing tube 29 mounted on the sliding block 13, and a defoamer storage tank 6 mounted on the fixed top frame 8. The L-shaped dosing tube 29 is used to add defoamer from the top of the transparent observation tube 9, and the defoamer storage tank 6 is connected to the L-shaped dosing tube 29 via a metering pump 27 and a dosing hose 28.

[0042] When the number of added components is greater than 2, all added components can share the sliding rod 7 and the defoamer tank 6, or the sliding rod 7 and the defoamer tank 6 can be set independently to match different detection scenarios.

[0043] The filling assembly includes a liquid tank 4, a liquid delivery pump 11, and a delivery pipe 12 connected in sequence. The delivery pipe 12 is connected to all the transparent observation tubes 9 via a connecting pipe 26. A third solenoid valve 25 is provided at the position where the connecting pipe 26 connects to the corresponding transparent observation tube 9.

[0044] To facilitate cleaning of the transparent observation tube 9, in this embodiment, each transparent observation tube 9 is connected to a water outlet branch pipe 23 at its bottom. All water outlet branch pipes 23 are connected to a drain pipe 2, and each water outlet branch pipe 23 is equipped with a second solenoid valve 24. During cleaning, waste liquid and cleaning liquid can be discharged by opening and closing the second solenoid valve 24.

[0045] In this embodiment, the chassis 1 is provided with a door 3, and the side wall of the chassis 1 and / or the door 3 are provided with several ventilation holes, and the side wall of the transparent observation tube 9 is provided with scale lines.

[0046] This embodiment also provides a test method based on the above-mentioned defoaming performance detection with comparative display, including the following steps:

[0047] S1: Add an equal amount of raw material liquid to the transparent observation tube 9 through the injection assembly. Specifically, open the third solenoid valve 25 to add raw material liquid to all transparent observation tubes 9, and ensure that the amount of raw material liquid added to all transparent observation tubes 9 is the same by comparison or scale lines.

[0048] S2: Gas is injected into all transparent observation cylinders 9 through the air injection assembly to form foam in the raw material liquid. Specifically, the air compressor 15 and the first solenoid valve 17 are turned on to fill the raw material liquid in all transparent observation cylinders 9 with air to form foam. During the foam formation process, the drive motor 18 drives the lifting frame 19 to reciprocate in the vertical direction, thereby driving the rotating head 34 to reciprocate in the vertical direction. At the same time, the rotating head 34 rotates under the drive of the airflow to improve the foaming uniformity and foaming efficiency.

[0049] S3: Turn on metering pump 27 to inject the same type but different doses of defoamer into all transparent observation cylinders 9, and evaluate the defoaming performance of different doses of defoamer according to the defoaming rate; or turn on metering pump 27 to inject different types but the same doses of defoamer into all transparent observation cylinders 9, and evaluate the defoaming performance of different types of defoamer according to the defoaming rate.

[0050] S4: After the test is completed, open the second solenoid valve 24 to discharge the raw material liquid in the transparent observation tube 9.

[0051] S5: Open the fourth solenoid valve 32 and the flushing water pump 30 to inject cleaning fluid into the transparent observation tube 9 to clean the tube wall of the transparent observation tube 9. During the injection of cleaning fluid, the drive motor 18 drives the lifting frame 19 to reciprocate in the vertical direction, thereby driving the rotating head 34 to reciprocate in the vertical direction. At the same time, the rotating head 34 rotates under the drive of the water flow, improving the cleaning degree of the tube wall of the transparent observation tube 9.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A defoaming performance testing device having a contrast display function, characterized by, include: Chassis (1), mounting bracket (5) mounted on chassis (1), and mounting top bracket (8) mounted on mounting bracket (5); At least two transparent observation tubes (9) are provided between the chassis (1) and the fixed top frame (8). The bottom of the transparent observation tube (9) is provided with a sealing slide (22). A hollow slide tube (14) is slidably provided inside the sealing slide (22). The top of the hollow slide tube (14) extends into the interior of the transparent observation tube (9) and is connected to a rotating head (34). The rotating head (34) is provided with several nozzles (35). The bottom of the hollow slide tube (14) is connected to the first end of the three-way connector (20). The housing (1) is provided with an air injection component connected to the second end of the three-way connector (20) and a water injection component connected to the third end of the three-way connector (20); the housing (1) is provided with a lifting component that drives the hollow slide tube (14) to reciprocate in the vertical direction and an injection component for adding raw material liquid that is connected to the transparent observation tube (9); the fixed frame (5) and the fixed top frame (8) are provided with at least one addition component for adding defoamer.

2. The antifoaming property testing device having a contrast display function according to claim 1, characterized by, The nozzle (35) is arranged circumferentially along the rotating head (34), and the spraying direction of the nozzle (35) is along the tangential direction of the rotating head (34). When the nozzle (35) sprays, it enables the rotating head (34) to rotate at the top of the hollow slide tube (14).

3. The antifoam performance testing device with a contrast display function according to claim 1, characterized by, The lifting assembly includes a drive motor (18) and a threaded rod (21) whose bottom end is connected to the motor shaft of the drive motor (18); the top end of the threaded rod (21) is rotatably connected to the housing (1), and the threaded rod (21) is threadedly connected to a lifting frame (19), which is in sliding engagement with all the hollow slide tubes (14).

4. The antifoaming property testing device having a contrast display function according to claim 1, characterized by, The air injection assembly includes an air compressor (15) and an air injection hose (16) connected to the output end of the air compressor (15); the air injection hose (16) is connected to an air injection manifold (36), the air injection manifold (36) is connected to the second end of all the three-way connectors (20), and the air injection hose (16) is provided with a first solenoid valve (17).

5. The antifoaming property testing device having a contrast display function according to claim 1, wherein The water injection assembly includes a flushing water tank (10), a flushing water pump (30) connected to the flushing water tank (10), and a water injection hose (31) connected to the output end of the flushing water pump (30); the water injection hose (31) is connected to a water injection branch pipe (33), and the water injection branch pipe (33) is connected to the third end of all the three-way connectors (20); the water injection hose (31) is equipped with a fourth solenoid valve (32).

6. The antifoaming property testing device having a contrast display function according to claim 1, wherein The addition assembly includes two sliding rods (7), a sliding block (13) slidably disposed on the two sliding rods (7), an L-shaped dosing tube (29) disposed on the sliding block (13), and a defoamer storage tank (6) disposed on the fixed top frame (8); the L-shaped dosing tube (29) is used to add defoamer from the top of the transparent observation tube (9), and the defoamer storage tank (6) is connected to the L-shaped dosing tube (29) through a metering pump (27) and a dosing hose (28).

7. The defoaming performance testing device with comparative display function according to claim 1, characterized in that, The injection assembly includes a liquid tank (4), a liquid delivery pump (11), and a delivery pipe (12) connected in sequence; the delivery pipe (12) is connected to all the transparent observation tubes (9) through a connecting pipe (26), and a third solenoid valve (25) is provided at the position where the connecting pipe (26) connects to the corresponding transparent observation tube (9).

8. The defoaming performance testing device with comparative display function according to claim 1, characterized in that, The bottom of each transparent observation tube (9) is connected to a water outlet branch pipe (23), and all the water outlet branch pipes (23) are connected to a drain pipe (2). Each water outlet branch pipe (23) is equipped with a second solenoid valve (24).

9. A testing method for a defoaming performance testing device with a comparative display function as described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1: Add an equal amount of raw material liquid to all transparent observation tubes (9) through the injection assembly; S2: Gas is injected into all transparent observation tubes (9) through the gas injection assembly to form foam in the raw material liquid; S3: By adding components, inject the same type but different doses of defoamer into all transparent observation tubes (9) and evaluate the defoaming performance of different doses of defoamer according to the defoaming rate; or by adding components, inject different types but the same doses of defoamer into all transparent observation tubes (9) and evaluate the defoaming performance of different types of defoamer according to the defoaming rate. S4: After the test is completed, the raw material liquid is discharged and cleaning liquid is injected into all transparent observation tubes (9) through the water injection component for cleaning.

10. The test method according to claim 9, characterized in that, In step S2, during the air injection process, the lifting assembly drives the rotating head (34) to reciprocate in the vertical direction, and the rotating head (34) rotates when the air is injected to form uniform bubbles; In step S4, during the water injection process, the lifting assembly drives the rotating head (34) to reciprocate in the vertical direction, and the rotating head (34) rotates when spraying water.

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