Hydrophilic aluminum foil dry and wet hydrophilic angle pretreatment testing device
By using stepper motors and transmission devices in the temperature and humidity box, the problem of poor reproducibility of the dry and wet test results of hydrophilic aluminum foil in the prior art is solved, and higher experimental accuracy and convenience are achieved. Testing process.
Patent Information
- Application Number
- CN202420733126.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-10
AI Technical Summary
In the prior art, the dry-wet-infiltrating hydrophilic pretreatment equipment of hydrophilic aluminum foil cannot accurately control the temperature and humidity, resulting in poor reproducibility of the test results and a high-pressure air source is required, which limits the placement and convenience of use of the equipment.
The temperature and humidity box is used to combine the stepper motor and the transmission device to accurately control the temperature and humidity, and to achieve dry and wet wetness of the sample through the stepper motor, avoiding the use of high-pressure air sources, ensuring the accuracy and repeatability of the test conditions.
The test is realized under a precisely controlled temperature and humidity environment, ensuring the stability and repeatability of experimental results, simplifying the equipment structure, expanding the selection adaptability of the placement, and independently controlling the test environment and infiltration process.
Smart Images
Figure CN222299289U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hydrophilic aluminum foil performance testing, and particularly relates to a hydrophilic aluminum foil dry and wet hydrophilic angle pre-treatment testing device. Background Art
[0002] Hydrophilic aluminum foil is usually used to make air conditioner radiator fins. It has a strong affinity for water, allowing condensed water to spread quickly on the fins, effectively eliminating the "water bridge" phenomenon between the fins and ensuring good ventilation of the air conditioner.
[0003] The quality of hydrophilic aluminum foil is usually characterized by measuring the contact angle formed by water droplets on the surface of the hydrophilic aluminum foil, that is, hydrophilicity. Hydrophilicity can be divided into initial hydrophilicity, continuous hydrophilicity, dry and wet infiltration hydrophilicity, etc. Dry and wet infiltration hydrophilicity mainly simulates the change in hydrophilicity of hydrophilic aluminum foil after a period of use. The detection requirement is to fix the hydrophilic aluminum foil on the sample holder in a closed and clean environment with a temperature of 25℃±5℃ and a humidity of not less than 80%, immerse the sample in distilled water for 2 minutes, and dry it naturally for 6 minutes as a cycle. Repeat 300 cycles and then dry it. After the above pre-treatment, test the hydrophilic angle.
[0004] In the prior art, the pre-treatment equipment for wet-dry infiltration hydrophilicity is usually carried out through a wet-dry cycle test machine, the principle of which is to adjust the relative humidity and temperature in the test chamber through an air dryer; the sample rack brought into the test chamber by a circulating cylinder is wet-dry, and the lifting time and cycle number are controlled by a controller. The shortcomings of the prior art are: the use of a high-pressure air source is required, which has restrictions on the placement location; the temperature and humidity cannot be accurately controlled, and it is difficult to ensure the reproducibility of the test results.
[0005] Therefore, there is an urgent need for a hydrophilic aluminum foil dry and wet hydrophilic angle pretreatment test device to improve the defects and shortcomings of the existing technology. Utility Model Content
[0006] The utility model aims to provide a hydrophilic aluminum foil dry and wet hydrophilic angle pre-treatment test device, which is characterized by comprising:
[0007] Temperature and humidity chamber, liquid storage tank, stepper motor, motor controller, transmission device, sample rack, test hole and several sample clamps;
[0008] Outside the temperature and humidity chamber, the stepper motor is connected to the motor controller via a control line;
[0009] A test hole is opened in the middle of the top of the temperature and humidity chamber, a stepper motor is fixed on the top of the temperature and humidity chamber, the stepper motor is fixedly connected to the transmission device through threads, the transmission device passes through the test hole and is fixedly connected to the sample rack in the temperature and humidity chamber through threads; a plurality of sample clips are evenly arranged at the bottom of the sample rack, and the interval between each sample clip is greater than the length of the sample to be tested;
[0010] A liquid storage tank is arranged inside the temperature and humidity box. The liquid storage tank is located just below the sample rack. The orthographic projection of the sample rack at the bottom of the temperature and humidity box falls into the orthographic projection of the liquid storage tank at the bottom of the temperature and humidity box.
[0011] The stepper motor is a fixed-shaft linear stepper motor, and the transmission device is a linear guide rail of the fixed-shaft linear stepper motor.
[0012] The sample holder is of a centrally symmetrical shape.
[0013] A sealing device is arranged at the test hole.
[0014] A liquid inlet of the liquid storage tank is arranged on the side wall of the liquid storage tank; and a liquid outlet of the liquid storage tank is arranged on the bottom surface of the liquid storage tank.
[0015] A support block is placed below the reservoir.
[0016] The beneficial effects of the utility model are:
[0017] In view of the defects and shortcomings of the prior art, the utility model provides a hydrophilic aluminum foil dry and wet hydrophilic angle pretreatment test device, which adopts a linear stepper motor to accurately control the lifting speed and holding time, and adopts a temperature and humidity test chamber to accurately control the temperature and humidity, so as to ensure the stability and repeatability of the test results. The circulation device and the temperature and humidity environment device are independently controlled, and are easy to separate and operate independently. The entire experiment is carried out in an environment with precisely controlled temperature and humidity conditions, which ensures the accuracy and reproducibility of the experimental conditions; a combination of a stepper motor and a transmission device is used to achieve dry and wet infiltration of the sample, without the need for a high-pressure gas source, which is more convenient to use, more compact in structure, and more adaptable to the choice of placement location; the test environment control part and the dry and wet infiltration part are relatively independent, and can be used independently under different test requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of a hydrophilic aluminum foil dry and wet hydrophilic angle pre-treatment test device of the utility model;
[0019] In the figure, 1-temperature and humidity chamber, 2-liquid storage tank, 3-stepping motor, 4-motor controller, 5-transmission device, 6-sample rack, 7-test hole, 8-sample clamp, 9-liquid inlet of liquid storage tank, 10-liquid discharge port of liquid storage tank. DETAILED DESCRIPTION
[0020] The utility model provides a hydrophilic aluminum foil dry and wet hydrophilic angle pre-treatment testing device, and the utility model is further described in detail below in conjunction with the accompanying drawings.
[0021] like Figure 1The embodiment of the utility model shown discloses a hydrophilic aluminum foil dry and wet hydrophilic angle pretreatment test device, comprising: a temperature and humidity chamber 1, a liquid storage tank 2, a stepper motor 3, a motor controller 4, a transmission device 5, a sample rack 6, a test hole 7 and a plurality of sample clamps 8;
[0022] Outside the temperature and humidity chamber 1, the stepper motor 3 is connected to the motor controller 4 via a control line;
[0023] A test hole 7 is opened in the middle of the top of the temperature and humidity chamber 1, a stepper motor 3 is fixed on the top of the temperature and humidity chamber 1, the stepper motor 3 is fixedly connected to the transmission device 5 by threads, the transmission device 5 passes through the test hole 7 and is fixedly connected to the sample rack 6 in the temperature and humidity chamber 1 by threads; a plurality of sample clamps 8 are evenly arranged at the bottom end of the sample rack 6, and the interval between each sample clamp 8 is greater than the length of the sample to be tested;
[0024] A liquid storage tank 2 is provided inside the temperature and humidity chamber 1 . The liquid storage tank 2 is located directly below the sample rack 6 . The orthographic projection of the sample rack 6 at the bottom of the temperature and humidity chamber 1 falls within the orthographic projection of the liquid storage tank 2 at the bottom of the temperature and humidity chamber 1 .
[0025] In this embodiment, the transmission device 5 converts the rotational motion of the rotor of the stepper motor 3 into the linear motion of the lead screw connected to the rotor of the stepper motor 3. For example, a ball screw or a linear guide rail of a fixed-axis linear stepper motor in the prior art, which is not specifically limited in this embodiment.
[0026] In this embodiment, the functions of the motor controller 4 in the prior art are utilized to set the rotation direction, number of rotations and rotation step length of the stepper motor 3, thereby realizing the control of the linear reciprocating motion of the transmission device 5 in a direction perpendicular to the bottom surface of the temperature and humidity chamber 1, thereby further realizing the control of the moving direction, moving distance and moving speed of the sample rack 6, setting the forward and reverse dwell time and number of cycles of the stepper motor 3, and controlling the reciprocating motion of the sample rack 6.
[0027] In this embodiment, the stepper motor 3, the motor controller 4, the transmission device 5 and the sample rack 6 form a circulation device, through which the lifting speed and the holding time are precisely controlled, thereby improving the experimental accuracy of the pretreatment test of the dry and wet hydrophilic angle of the hydrophilic aluminum foil.
[0028] The combination of the stepper motor 3 and the transmission device 5 is used to achieve dry and wet infiltration of the sample without using a high-pressure gas source. The test process is more convenient, the structure is more compact, and the adaptability to the selection of the test device placement location is wider.
[0029] In this embodiment, the temperature and humidity chamber 1 is used as a temperature and humidity environment device, which is used to accurately control the temperature and humidity of the test environment, ensuring that the temperature of the test environment is controlled at 25℃±5℃ and the relative humidity of the test environment is greater than 80%RH, thereby ensuring the stability and repeatability of the test results.
[0030] In this embodiment, the circulation device and the temperature and humidity environment device are independently controlled, easy to separate and operate independently, and the test environment control and dry and wet immersion control are relatively independent and can be used independently under different test requirements. The entire test process is carried out in an environment with precisely controlled temperature and humidity conditions, ensuring the accuracy, stability and reproducibility of the test conditions.
[0031] In this embodiment, the intervals between the sample clamps 8 are greater than the length of the sample to be tested, ensuring that during the test, the hydrophilic aluminum foils as the sample to be tested will not contact each other, which would affect the test results.
[0032] In this embodiment, those skilled in the art should select the size and shape of the corresponding liquid storage tank 2 and the sample rack 6, as well as the shape and number of the sample clamps 8 according to the specific requirements of the test items. No specific limitation is made in this embodiment.
[0033] When using the hydrophilic aluminum foil dry and wet hydrophilic angle pretreatment test device disclosed in this embodiment, the experimental solution is injected into the liquid reservoir 2, the liquid reservoir 2 is placed directly below the sample rack 6 in the temperature and humidity box 1, the sample is placed on the sample clamp 8 at the bottom of the sample rack 6, and the temperature and humidity conditions of the temperature and humidity box are set to 25°C and 85% RH. By setting parameters in the motor controller 4, the sample rack 6 moves in a reciprocating direction, the moving speed is 5mm / s, the moving distance is 50mm, the forward residence time is 6min, the reverse residence time is 2min, and the number of cycles is 300 times. When the test starts, the stepper motor 3 drives the sample of the sample rack 6 in the liquid reservoir 2 through the transmission device 5 according to the program set by the motor controller 4, and performs reciprocating motion of immersion and drying. During the test, the entire test environment is maintained at 25°C and 85% RH, and the test stops after 300 cycles. Take out the liquid reservoir 2 from the temperature and humidity box 1 and discharge the experimental solution.
[0034] In an optional embodiment, the stepper motor 3 is a fixed-axis linear stepper motor, and the transmission device 5 is a linear guide rail of the fixed-axis linear stepper motor. The fixed-axis linear stepper motor is not only more compact in structure, but also more precise in linear motion control.
[0035] In an optional embodiment, the sample rack 6 is of a centrally symmetrical shape. The centrally symmetrical shape of the sample rack 6 can improve the stability of the sample rack 6 during the linear motion, such as the sample rack 6 is of a rectangular shape.
[0036] In an optional embodiment, a sealing device is provided at the test hole 7. The sealing device can further improve the precise control of temperature and humidity during the entire test process. For example, the sealing device is a sealing strip.
[0037] In an optional embodiment, a liquid reservoir inlet 9 is provided on the side wall of the liquid reservoir 2. During the test, the experimental solution is injected into the liquid reservoir 2 through the liquid reservoir inlet 9 to further improve the stability and accuracy of the injected experimental solution. A liquid reservoir drain port 10 is provided on the bottom surface of the liquid reservoir 2. After the test, the experimental solution is discharged through the liquid reservoir drain port 10.
[0038] In an optional embodiment, in order to make the liquid storage tank 2 compatible with more test conditions, such as to adapt to the linear motion range of the stepper motor 3, a support block is placed under the liquid storage tank 2 to improve the adaptability of the test device.
Claims
1. A hydrophilic aluminum foil dry and wet hydrophilic angle pretreatment test device, characterized in that: include: A temperature and humidity chamber (1), a liquid storage tank (2), a stepping motor (3), a motor controller (4), a transmission device (5), a sample rack (6), a test hole (7), and a plurality of sample clamps (8); Outside the temperature and humidity chamber (1), the stepper motor (3) is connected to the motor controller (4) via a control line; A test hole (7) is provided in the middle of the top of the temperature and humidity chamber (1); a stepper motor (3) is fixed to the top of the temperature and humidity chamber (1); the stepper motor (3) is fixedly connected to the transmission device (5) by means of threads; the transmission device (5) passes through the test hole (7) and is fixedly connected to the sample rack (6) in the temperature and humidity chamber (1) by means of threads; a plurality of sample clamps (8) are evenly arranged at the bottom end of the sample rack (6); and the intervals between the sample clamps (8) are greater than the length of the sample to be tested; A liquid storage tank (2) is provided inside the temperature and humidity chamber (1). The liquid storage tank (2) is located directly below the sample rack (6). The orthographic projection of the sample rack (6) at the bottom of the temperature and humidity chamber (1) falls within the orthographic projection of the liquid storage tank (2) at the bottom of the temperature and humidity chamber (1).
2. The hydrophilic aluminum foil dry and wet hydrophilic angle pretreatment test device according to claim 1, characterized in that: The stepper motor (3) is a fixed-axis linear stepper motor, and the transmission device (5) is a linear guide rail of the fixed-axis linear stepper motor.
3. The hydrophilic aluminum foil dry and wet hydrophilic angle pretreatment test device according to claim 1, characterized in that: The sample rack (6) is of a centrally symmetrical shape.
4. The hydrophilic aluminum foil dry and wet hydrophilic angle pretreatment test device according to claim 1, characterized in that: A sealing device is provided at the test hole (7).
5. The hydrophilic aluminum foil dry and wet hydrophilic angle pretreatment test device according to claim 1, characterized in that: A liquid storage tank liquid inlet (9) is arranged on the side wall of the liquid storage tank (2); and a liquid storage tank liquid discharge port (10) is arranged on the bottom surface of the liquid storage tank (2).
6. The hydrophilic aluminum foil dry and wet hydrophilic angle pretreatment test device according to claim 1, characterized in that: A support block is placed below the liquid storage tank (2).