Aerodynamic abrasion wear testing device for textile materials

Abstract

The application discloses a kind of pneumatic wear and tear test device for textile material, including cabin and rotating device in cabin, by setting up air scattering hole on the specific position of the stirrer of rotating device, and the direction of air scattering is 55 degrees with the plane where the stirrer is, the diameter of the air scattering nozzle is 1.2mm, the pressure value suitable for the textile material of different unit surface mass range is set, when the force value fluctuation range shown by sensor is ±1% and lasts 1.0s, alarm device sends alarm sound, by setting the above parameters matched with the state of cabin and textile material, the test time of textile material wear and tear test is reduced, locking device is set on rotating position, the degree of automation is improved, and the test precision is improved.

Description

Technical Field

[0001] This invention relates to the field of textile technology, and in particular to a pneumatic consumption testing device for textile materials. Background Technology

[0002] Currently, the abrasion and wear resistance of textile materials is one of the main mechanical properties of textile materials, and its durability directly affects the performance and application of textile materials. The main testing method for abrasion and wear resistance is to conduct abrasion tests by contacting the textile material with an abrasive, and then evaluate the abrasion and wear resistance of the textile material through methods such as appearance evaluation or mass loss.

[0003] However, existing testing equipment has a long testing time, affecting experimental efficiency. Increasing the friction of the abrasive and the weight of the test block can reduce the testing time, but it can easily wear through the textile material after only a few wear tests, rendering the test invalid. Therefore, frequent checks are required during the testing process, resulting in low automation, high time and labor costs, and an increased number of invalid tests, affecting the accuracy and efficiency of the test. Summary of the Invention

[0004] To overcome the aforementioned shortcomings, this device employs a rotating mechanism within a chamber, with abrasive particles placed on the chamber's inner walls. Textile samples are placed inside the chamber, and the rotation of the mechanism causes the samples to wear down under the influence of the abrasive. The wear and tear performance of the textile samples is then tested by measuring the mass loss over a specific time period. The rotating mechanism's speed is adjustable, allowing for rapid testing of textile materials with varying unit area mass and styles, thus shortening testing time and improving efficiency.

[0005] Meanwhile, since this device measures mass loss based on a time-lapse mechanism, ensuring the accuracy of the test results requires that the sample maintain normal rotation within the specified test time. However, during the agitation of the textile sample within the chamber, the sample can easily become stuck in a certain position, preventing normal rotation and requiring manual intervention, which affects both work efficiency and the accuracy of the test results. Therefore, the structural design of this device prevents the sample from sticking to a certain position within the chamber, reducing manual intervention and ensuring the accuracy of the test results.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] The pneumatic abrasion testing device for textile materials of the present invention includes a chamber and a rotating device. The chamber is cylindrical, and an abrasive is disposed on the inner surface of the chamber. A door is disposed on the front side of the chamber. The rotating device is rotatably disposed in the chamber and includes a rotating position and stirring elements. The rotating position is located at the center of the rotating device, and multiple stirring elements are evenly arranged around the rotating position. A first switch is provided for controlling the opening and closing of the device.

[0008] Optionally, the portion of the stir bar near the rotation position is a first portion, which is rectangular with a length of 20 mm and a width of 10 mm. The portion far from the rotation position is a second portion, which includes an upper line and a lower line, both of which are arcs. The intersection of the upper and lower lines is A. An extension line OB is obtained by extending the width of the first portion near the rotation position end to one side. The intersection of the extension line OB and the boundary line between the first and second portions is P, and ∠APB is 23°. The intersection of the extension line OB and the lower line 7 is the first intersection point M.

[0009] Optionally, the inner diameter of the chamber is 140 mm and the depth is 70 mm; the total length of the rotating device is 114 mm, and there are two stirring elements 3.

[0010] Optionally, the agitator is provided with a vent hole, which can be used to vent air into the chamber.

[0011] Optionally, the vent is located at the first intersection point. The vent can disperse air into the cabin.

[0012] Optionally, the vent is provided with a vent nozzle, and the same vent nozzle emits a first gas and a second gas. The first gas and the second gas form a 30-degree angle. The second gas is close to the plane where the lower line 7 is located, and the second gas forms a 50-degree angle with the plane at the first intersection point of the lower line 7.

[0013] Optionally, the total diameter of the air diffuser is 1.2 mm, and the total pressure of the air diffuser is 0.36 Pa.

[0014] Optionally, for samples with a unit area mass (g / m²) ≥ 300, the total pressure of each vent is 0.36 Pa; for samples with a unit area mass (g / m²) 200 ≤ m < 300, the total pressure of each vent is 0.34 Pa; and for samples with a unit area mass (g / m²) m < 200, the total pressure of each vent is 0.32 Pa.

[0015] Optionally, it may also include a control device, a sensor, and an alarm device. The sensor is disposed on the stir bar and / or the side wall.

[0016] Optionally, when the force value displayed by the sensor fluctuates within ±1% for 1.0s, it indicates that the sample is rotating abnormally, such as being attached to a certain position, which affects the experimental results, and the alarm device will sound an alarm.

[0017] Optionally, the rotating device can be detached and installed.

[0018] Optionally, the method of using the pneumatic abrasion and wear testing device for textile materials includes the following steps: Step 1, turn on the pneumatic abrasion and wear testing device for textile materials, weigh the unit area weight of the sample, cut the sample to the required square sample, weigh the square sample before the test, and set the pressure of the air vent to a pressure corresponding to the unit area mass of the square sample; Step 2, open the chamber door, install the rotating device and abrasive, place the sample into the chamber, close the chamber door, turn on the second switch, keep the sample rotating under the action of the air vent of the rotating device, and start timing; Step 3, after the set time is reached, take out the square sample and weigh the mass of the square sample after the test; Step 4, repeat the above steps and calculate the abrasion and wear performance of the square sample.

[0019] Optionally, a locking device is provided on the rotating position.

[0020] The beneficial effects of this invention are as follows:

[0021] This apparatus uses a rotating device within a chamber, with abrasive particles placed on the chamber walls. Textile samples are placed inside, and the rotation of the device causes the samples to wear down under the influence of the abrasive. The wear resistance of the textile samples is tested by measuring the mass loss over a specific time period. The rotating device has an adjustable speed, allowing for rapid testing of textile materials with varying unit area mass and styles, thus shortening testing time and improving efficiency.

[0022] During the agitation of textile samples within the chamber, the samples can easily stick to a certain position, preventing normal rotation. This necessitates manual intervention, such as maneuvering, which affects both work efficiency and the accuracy of the test results. Therefore, this device prevents samples from sticking to a certain position within the chamber, reducing manual intervention and ensuring the accuracy of the test results.

[0023] Specifically, the location, number, direction, diameter, and pressure of the gas vents in this device are all set in accordance with the chamber specifications, the structure of the rotating device, and the properties of the test sample. Overall, this achieves the effect of completing the test in a short time and improving the accuracy of the test.

[0024] Regarding the pressure of the air diffuser, if the pressure is too low, it will have little effect, only delaying the time of the first contact with the wall, but it cannot guarantee that the normal rotation will continue throughout the test. If the pressure is too high, it will directly blow the sample to a certain point where it will contact the wall, which is also not conducive to the test. Therefore, based on the wide range of uses and large differences in basis weight of textile materials, this invention sets different air diffuser pressures according to different basis weight ranges, so as to ensure normal rotation during the test while being as scientific and energy-efficient as possible.

[0025] Because this test method is completed within a short time, it generally requires observation of the test process to avoid situations where the sample does not rotate normally during the test period. If this is not detected in time and included in the normal test values, it will directly affect the test results. Therefore, the entire test process requires observation by the test personnel, resulting in low automation and affecting work efficiency. This device is equipped with sensors and alarm devices. When the force value of the sensor fluctuates within the specified range and persists for a period of time, it indicates that the sample is not rotating normally, and an alarm is triggered in time, improving the degree of automation and work efficiency.

[0026] In cases where the object is partially stuck to the wall, it can automatically resume rotation within a short time. Therefore, the sensor only issues an alarm when the force value fluctuation range is within ±1% and remains stable for 1.0s, which is beneficial for the test.

[0027] Because the rotating device operates at a high speed, it is prone to coming loose, which can affect the experimental results and pose a safety hazard. Therefore, a locking device is installed on the rotating position. Attached Figure Description

[0028] Figure 1 This is a front view of the compartment according to an embodiment of the present invention;

[0029] Figure 2 This is a side view of the stir bar according to an embodiment of the present invention;

[0030] 1-Cavity; 2-Rotation position; 3-Agitator; 4-First section; 5-Second section; 6-Upper line; 7-Lower line. Detailed Implementation

[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0032] The pneumatic abrasion testing device for textile materials of the present invention includes a chamber 1 and a rotating device. The chamber 1 is cylindrical, and an abrasive is disposed on the inner surface of the chamber. A door is disposed on the front side of the chamber. The rotating device is rotatably disposed in the chamber and includes a rotating position 2 and stirring elements 3. The rotating position 2 is located at the center of the rotating device, and multiple stirring elements 3 are evenly arranged around the rotating position 2. A first switch is provided for controlling the opening and closing of the device.

[0033] In another embodiment of the present invention, the portion of the stir bar 3 near the rotation position 2 is a first portion 4, which is rectangular with a length of 20 mm and a width of 10 mm. The portion far from the rotation position 2 is a second portion 5, which includes an upper line 6 and a lower line 7. Both the upper line 6 and the lower line 7 are arcs. The intersection point of the upper line 6 and the lower line 7 is A. An extension line OB is obtained by extending the width of the first portion near the rotation position 2 end to one side. The intersection point of the extension line OB and the boundary line between the first portion and the second portion is P. ∠APB is 23°. The intersection point of the extension line OB and the lower line 7 is the first intersection point.

[0034] In another embodiment of the present invention, the inner diameter of the chamber 1 is 140 mm and the depth is 70 mm; the total length of the rotating device is 114 mm, and there are two stirring elements 3.

[0035] In another embodiment of the present invention, the stirrer 3 is provided with a vent hole, which can be used to vent air into the chamber.

[0036] In another embodiment of the present invention, the vent is located at the first intersection point. The vent can disperse air into the cabin.

[0037] In another embodiment of the present invention, the vent is provided with a vent nozzle, and the same vent nozzle emits a first gas and a second gas. The first gas and the second gas form a 30-degree angle. The second gas is close to the plane where the lower line 7 is located. The second gas and the plane at the first intersection point of the lower line 7 form a 50-degree angle.

[0038] In another embodiment of the present invention, the total diameter of the air diffuser is 1.2 mm and the total pressure of the air diffuser is 0.36 Pa.

[0039] In another embodiment of the present invention, for a sample with a unit area mass (g / m²) ≥ 300, the total pressure of each vent is 0.36 Pa; for a sample with a unit area mass (g / m²) 200 ≤ m < 300, the total pressure of each vent is 0.34 Pa; and for a sample with a unit area mass (g / m²) m < 200, the total pressure of each vent is 0.32 Pa.

[0040] In another embodiment of the invention, a control device, a sensor, and an alarm device are also included. The sensor is disposed on the stir bar and / or the side wall.

[0041] In another embodiment of the present invention, when the force value displayed by the sensor fluctuates within ±1% for 1.0s, it indicates that the sample is rotating abnormally, for example, it is attached to a certain position, affecting the experimental results, and the alarm device will sound an alarm.

[0042] In another embodiment of the present invention, the rotating device is detachable and installable.

[0043] In another embodiment of the present invention, a locking device is provided on the rotating position 2. The locking device can be an axial locking ring or an axial insertion locking device.

[0044] Another embodiment of the present invention provides a method for using the pneumatic abrasion and wear testing device for textile materials, comprising the following steps: Step 1, turning on the pneumatic abrasion and wear testing device for textile materials, weighing the unit area weight of the sample, cutting the sample to the required square sample, weighing the square sample before the test, and setting the pressure of the air vent to a pressure corresponding to the unit area mass of the square sample; Step 2, opening the chamber door, installing the rotating device and abrasive, placing the sample into chamber 1, closing the chamber door, turning on the second switch, keeping the sample rotating under the action of the air vent of the rotating device, and starting the timer; Step 3, after the set time is reached, removing the square sample and weighing the mass of the square sample after the test; Step 4, repeating the above steps and calculating the abrasion and wear performance of the square sample.

[0045] The structure and specific parameters of this device were obtained through extensive creative work, and the development process will not be detailed here. The verification results are also based on a large number of samples and variables, such as verification with and without vents, with vents placed at multiple different locations, angles, and pressures. Only representative variables and results are briefly described here. The test samples involved multiple samples from four different weight ranges, with multiple samples in each weight range. This table illustrates the average time (in seconds) for samples within each weight range.

[0046] As a result, the placement of the air diffuser holes and the specific setting of the air diffuser pressure in this invention, combined with the dimensions of the chamber and rotating device, the shape of the sample material, and the weight, achieve the overall effect of reducing test time and improving the accuracy of test data.

[0047] Sample weight m (g / m²) Time to first adhere to the wall without air vents (s) The time (s) for the first contact between the vent and the wall at point A. The ventilation hole is located in the center of the second part. The first time it adheres to the wall (s) The first and second gas streams are both approximately perpendicular to the second part of the plane. The first contact time with the wall is (s). The total pressure of the same vent nozzle is 0.5 Pa. The first contact time with the wall is (s). The time (s) for the first adhesion of the air vent to the wall in this invention. ≥300 180 270 289 280 295 ＞300 200≤m＜300 174 255 274 274 ＞300 ＞300 100≤m＜200 150 200 198 187 288 ＞300 m＜100 100 180 175 190 283 ＞300

[0048] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A pneumatic abrasion testing device for textile materials, comprising a chamber (1), a rotating device, a control device, a sensor, an alarm device, a first switch, and a second switch, wherein the chamber (1) is a cylinder, the inner surface of the chamber (1) is provided with abrasive, a door is provided on the front side of the chamber, and the rotating device is rotatably disposed within the chamber (1), characterized in that: The rotating device includes a rotating position (2) and a stirring element (3). The rotating position (2) is located at the center of the rotating device. There are two stirring elements (3) evenly distributed on the rotating position (2). The first switch is used to control the opening and closing of the rotating device. A locking device is provided on the rotating position (2). The part of the stir bar (3) near the rotation position (2) is the first part (4), which is rectangular with a length of 20 mm and a width of 10 mm. The part of the stir bar (3) away from the rotation position (2) is the second part (5), which includes an upper line (6) and a lower line (7). Both the upper line (6) and the lower line (7) are arcs. The intersection of the upper line (6) and the lower line (7) is A. The extension line OB is obtained by extending the width of the first part (4) near the rotation position (2) to one side. The intersection of the extension line OB with the boundary line of the first part (4) and the second part (5) is P. ∠APB is 23°. The intersection of the extension line OB with the lower line (7) is the first intersection point M. The inner diameter of the chamber (1) is 140 mm and the depth is 70 mm; the total length of the rotating device is 114 mm; the stirrer (3) is provided with a vent hole, which is located at the first intersection point M.

2. The pneumatic wear test device for textile materials as described in claim 1, wherein the air outlet is provided with an air outlet nozzle, and the same air outlet nozzle emits a first gas and a second gas, the first gas and the second gas forming a 30-degree angle, the second gas being close to the plane where the lower line (7) is located, and the second gas forming a 50-degree angle with the plane at the first intersection point of the lower line (7); the second switch is used to control the opening and closing of the air outlet nozzle; the total diameter of the same air outlet nozzle is 1.2 mm.

3. The pneumatic wear test device for textile materials as described in claim 2, wherein for samples with a unit area mass (g / m²) ≥ 300, the total pressure of the same air diffuser is 0.36 Pa; for samples with a unit area mass (g / m²) 200 ≤ m < 300, the total pressure of the same air diffuser is 0.34 Pa; and for samples with a unit area mass (g / m²) m < 200, the total pressure of the same air diffuser is 0.32 Pa.

4. The pneumatic wear test device for textile materials as described in claim 3, wherein the sensor is disposed on the side wall of the stir bar and / or the chamber (1); when the force value displayed by the sensor fluctuates within ±1% for 1.0s, the alarm device emits an alarm sound.

5. A method of using the pneumatic abrasion testing device for textile materials as described in any one of claims 1-4, comprising the following steps: Step 1: Turn on the pneumatic abrasion and wear testing device for textile materials, weigh the sample by unit area, and cut the sample to the required square size. Weigh the square sample before the test, and set the pressure of the air vent to correspond to the unit area mass of the square sample. Step 2: Open the chamber door, install the rotating device and abrasive, place the sample into the chamber, close the chamber door, turn on the second switch, and keep the sample rotating under the action of the air vent of the rotating device. Start timing. Step 3: After the set time is reached, remove the square sample and weigh the square sample after the test. Step 4: Repeat the above steps and calculate the abrasion and wear performance of the square sample.

6. The pneumatic wear and tear testing device for textile materials according to claim 1, characterized in that: The speed of the rotating device is adjustable.

7. The pneumatic wear and tear testing device for textile materials according to claim 1, characterized in that: The hatch is made of transparent material.

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