A garment fabric permeation flow rate measuring device

Abstract

The utility model relates to a kind of clothing fabric permeation flow measuring devices, it is related to fabric detection device technical field, including annular clamping mechanism, gas circuit pipeline, set on the negative pressure gas source module of gas circuit pipeline output shaft, flowmeter and pressure regulating valve and dust removal component being set in gas circuit pipeline, dust removal component includes detachably set in the connecting pipe of gas circuit pipeline, the spiral flow guide that fixedly set in connecting pipe, airflow is converted into forced rotating flow, dust is centrifuged to pipe wall;Annular dust collection groove is recessed on the pipe wall downstream of spiral flow guide, and a circle of annular flow guide baffle that is inwards convex is equipped on the side wall of dust collection groove towards clean gas output port, the baffle forms pneumatic barrier in notch, so that dust wall-slips into groove and cannot be rolled out by main airflow.The utility model can realize filter element-free high-efficiency gas-solid separation by spiral flow guide, and interception efficiency is high and without additional air resistance, without interfering the stable transmission of test airflow.

Description

Technical Field

[0001] This application relates to the field of fabric testing equipment technology, and in particular to a device for measuring the permeation flow of clothing fabric. Background Technology

[0002] The fabric permeability measurement device is a specialized textile testing equipment based on the differential pressure method or constant flow method, used to detect the air permeability performance of clothing fabrics. This device can accurately quantify key indicators such as fabric air permeability and air volume, providing standardized and traceable precise data support for fabric research and development, production quality control, and garment performance optimization. It is widely used in the textile and apparel industry and quality inspection fields.

[0003] The existing fabric permeability measurement device is a core specialized device used in the textile and apparel industry for standardized testing of fabric air permeability. It is widely used in fabric research and development, production quality control, third-party quality inspection and other scenarios. The core is based on the constant pressure method or constant flow method test principle. By measuring the gas flow rate through the fabric under constant pressure difference, the core indicator of fabric air permeability is quantified. During actual testing, when the airflow vertically penetrates the fabric sample, it will carry short fibers, yarn fuzz, and residual dust particles from the fabric surface into the negative pressure air circuit system. These impurities will continuously adhere to and accumulate in the precision pressure regulating valve core mating surface, mass flow meter sensor probe, and air circuit filter element pores in the air circuit. Long-term accumulation can easily cause valve core jamming, throttling channel blockage, and a sharp reduction in filter screen flow area. This problem directly leads to the loss of control over the airflow stability in the air path, and the test pressure difference on both sides of the fabric cannot be maintained within the constant range specified by the standard. The flow rate data is severely distorted, resulting in significant deviations in the air permeability test results. This makes it impossible to meet the rigid requirements of domestic and international standards such as GB / T5453 and ISO9237 for test accuracy and repeatability. At the same time, this failure occurs frequently, which greatly shortens the service life of precision components. The equipment needs to be frequently shut down for disassembly, cleaning, and replacement of parts, resulting in high maintenance costs and making it difficult to adapt to the application needs of textile enterprises for continuous quality inspection of large batches of fabrics.

[0004] Therefore, it is necessary to propose a device for measuring the permeation flow of clothing fabrics to solve the above problems. Utility Model Content

[0005] This application provides a device for measuring the permeation flow of clothing fabrics. In order to improve the existing clothing fabric ventilation flow detection devices in the related technology, the device addresses the technical problem that fibers and dust falling off the fabric during testing can easily enter the air path, clogging the precision pressure regulating valve, flow meter and filter screen, causing unstable air flow and inability to maintain the test pressure difference. This results in distorted test data, high frequency equipment failures, increased maintenance costs, and difficulty in meeting the technical requirements of batch continuous quality inspection.

[0006] This application provides a garment fabric permeation flow measurement device, including an annular clamping mechanism, an air passage pipe, a negative pressure air source module installed on the output shaft of the air passage pipe, a flow meter installed in the air passage pipe, a pressure regulating valve, and a dust removal component. The dust removal component includes a connecting pipe detachably installed in the air passage pipe, and a spiral guide fixedly installed in the connecting pipe to convert the airflow into a forced rotation flow and centrifugally throw the dust to the pipe wall. The downstream pipe wall of the spiral guide is recessed with an annular dust collection groove. The side wall of the dust collection groove facing the clean gas outlet is provided with an inwardly protruding annular guide baffle. This baffle forms an aerodynamic barrier at the groove opening, causing dust to slide into the groove and not be swept out by the main airflow.

[0007] The technical solutions described above in this application embodiment have at least the following technical effects: the spiral guide transforms the straight airflow in the air path into a forced rotating flow, and centrifugal force is used to throw the fibers and dust carried in the airflow to the pipe wall; in conjunction with the aerodynamic barrier formed by the downstream annular dust collection groove and the annular guide baffle, the separated impurities can be prevented from being rolled out again by the main airflow, achieving filter-free high-efficiency gas-solid separation, with high interception efficiency and no additional air resistance, and without interfering with the stable transmission of the test airflow.

[0008] In this embodiment, a conical diffuser filter is provided between the annular clamping mechanism and the air inlet end of the air pipeline. The cone apex of the conical diffuser filter faces the fabric sample inside the annular clamping mechanism, and a non-contact constant gap is provided between the cone apex and the fabric sample.

[0009] Through this technical solution, the conical diffuser filter adopts a non-contact design, which can efficiently intercept fibers and dust in the test airflow from the source without interfering with the normal testing of fabric samples or affecting the accuracy of test data, thus greatly reducing the risk of blockage of precision components in the air path.

[0010] In this embodiment, the two ends of the connecting pipe are detachably connected by clamps, and a fluororubber sealing ring is embedded at the joint.

[0011] This technical solution employs a quick-release clamp design combined with fluororubber sealing, resulting in a simple structure and convenient assembly and disassembly. Dust removal components can be maintained and replaced without the need for special tools. At the same time, it ensures reliable sealing of air circuit connections, eliminates the risk of air leakage, guarantees stable testing accuracy of the device, and effectively reduces the difficulty of daily equipment maintenance and operating costs.

[0012] In this embodiment, the spiral guide abuts against the inner wall of the pipe.

[0013] This technical solution features a simple and convenient design for the spiral guide to contact the inner wall of the pipe. It can achieve reliable radial positioning of the guide, avoiding structural loosening and flow field disturbance caused by airflow impact. It can also completely eliminate short circuits of untreated airflow, ensuring the centrifugal separation effect of fiber dust, reducing the risk of airway blockage from the source, and continuously ensuring the accuracy of device detection data and operational reliability.

[0014] In this embodiment, the annular dust collection trough and the connecting pipe can be detachably connected by a threaded sealing connection.

[0015] This technical solution features a detachable threaded seal design for the annular dust collection tank and connecting pipe, resulting in a simple structure and convenient assembly. The dust collection tank can be quickly disassembled and cleaned without the need for special tools, meeting the high-frequency maintenance requirements of the device. At the same time, it ensures the sealing performance of the connection, eliminates the risk of air leakage and impurity backflow, continuously guarantees the gas-solid separation effect and the device's testing accuracy, and effectively reduces the difficulty of daily equipment maintenance and operating costs.

[0016] In this embodiment, the connecting tube is made of a transparent material to allow for observation of the amount of dust accumulated in the dust collection tank and quick disassembly and cleaning.

[0017] This technical solution, with its transparent connecting pipe design, enables visual monitoring of dust accumulation inside the gas path, facilitating precise control of cleaning timing by operators and preventing backflow of impurities and potential blockages caused by excessive dust accumulation. Furthermore, the structure is easy to disassemble and clean, requiring no special tools for routine maintenance, effectively reducing equipment operation and maintenance difficulty and ensuring the accuracy of device testing data and long-term operational stability.

[0018] Beneficial effects: Constructing a full-link gradient anti-blocking system that combines unobstructed source interception with centrifugal swirl separation, it efficiently intercepts fibers and dust in the test airflow, completely eliminates blockage failures in core components such as precision pressure regulating valves and flow meters, ensures stable airflow and constant test pressure difference, and significantly extends the fault-free operation time of the equipment; Secondly, the non-contact conical filter and low-resistance centrifugal separation structure do not compress the fabric and change its original state, nor do they interfere with the test flow field. Combined with the full-link sealing design, it ensures the airtightness of the air path and ensures the accuracy and compliance of the test data. Third, the core components adopt a quick-disassembly and visual design, which can be disassembled and maintained without special tools. The dust accumulation status can be monitored in real time, adapting to the needs of batch continuous quality inspection, and greatly reducing the difficulty of equipment operation and maintenance and operating costs. Attached Figure Description

[0019] Figure 1 A three-dimensional structural schematic diagram of the garment fabric permeation flow measurement device provided in the embodiments of this application; Figure 2An exploded structural diagram of the connecting pipe and the annular dust collection tank provided in the embodiments of this application; Figure 3 A cross-sectional structural diagram of the connecting pipe and the annular dust collection trough provided in the embodiments of this application; Figure 4 An exploded view of the annular clamping mechanism and the filter screen provided in the embodiments of this application; The following are the labeling elements in the figure: 1. Annular clamping mechanism; 2. Air pipeline; 3. Negative pressure air source module; 4. Dust removal component; 41. Connecting pipe; 42. Spiral guide; 43. Annular dust collection trough; 44. Annular guide baffle; 5. Filter screen; 6. Clamp. Detailed Implementation

[0020] The existing fabric permeability measurement device is a core specialized device used in the textile and apparel industry for standardized testing of fabric air permeability. It is widely used in fabric research and development, production quality control, third-party quality inspection and other scenarios. The core is based on the constant pressure method or constant flow method test principle. By measuring the gas flow rate through the fabric under constant pressure difference, the core indicator of fabric air permeability is quantified. During actual testing, when the airflow vertically penetrates the fabric sample, it will carry short fibers, yarn fuzz, and residual dust particles from the fabric surface into the negative pressure air circuit system. These impurities will continuously adhere to and accumulate in the precision pressure regulating valve core mating surface, mass flow meter sensor probe, and air circuit filter element pores in the air circuit. Long-term accumulation can easily cause valve core jamming, throttling channel blockage, and a sharp reduction in filter screen flow area. This problem directly leads to the loss of control over the airflow stability in the air path, and the test pressure difference on both sides of the fabric cannot be maintained within the constant range specified by the standard. The flow rate data is severely distorted, resulting in significant deviations in the air permeability test results. This makes it impossible to meet the rigid requirements of domestic and international standards such as GB / T5453 and ISO9237 for test accuracy and repeatability. At the same time, this failure occurs frequently, which greatly shortens the service life of precision components. The equipment needs to be frequently shut down for disassembly, cleaning, and replacement of parts, resulting in high maintenance costs and making it difficult to adapt to the application needs of textile enterprises for continuous quality inspection of large batches of fabrics.

[0021] Based on this, in order to improve the technical problems of existing clothing fabric ventilation flow detection devices in related technologies, such as the easy entry of fabric fibers and dust into the air path during testing, which can clog precision pressure regulating valves, flow meters and filters, causing unstable air flow and inability to maintain test pressure difference, resulting in distorted test data, high frequency equipment failure, increased maintenance costs, and difficulty in adapting to the needs of batch continuous quality inspection, the embodiments of this application provide the following solutions.

[0022] Please refer to the following: Figures 1 to 4This application provides a garment fabric permeation flow measurement device, which includes an annular clamping mechanism 1, an air passage pipe, a negative pressure air source module 3 installed on the output shaft of the air passage pipe 2, a flow meter installed in the air passage pipe 2, a pressure regulating valve, and a dust removal component 4. The dust removal component 4 includes a connecting pipe 41 detachably installed in the air passage pipe 2, and a spiral guide 42 fixedly installed in the connecting pipe 41 to convert the airflow into a forced rotation flow and centrifugally throw the dust to the pipe wall. A ring-shaped dust collection groove 43 is recessed on the pipe wall downstream of the spiral guide 42. A ring-shaped guide baffle 44 protruding inward is provided on the side wall of the dust collection groove facing the clean gas outlet. The baffle forms an aerodynamic barrier at the groove opening, causing the dust to slide into the groove and not be swept out by the main airflow.

[0023] The garment fabric permeation flow measurement device provided in this application embodiment has a dust removal component 4 connected in series in the air circuit 2 via a detachable connecting pipe 41. It is located between the annular clamping mechanism 1 and the pressure regulating valve and flow meter. Without changing the original test air circuit layout and core test logic of the device, it can pre-purify the test airflow, effectively preventing fibers and dust from clogging the valve core of the precision pressure regulating valve and the flow meter sensor probe, ensuring the stability of the device's test pressure difference and the accuracy of flow detection, and significantly reducing the frequency of equipment failure and maintenance costs. The dust removal structure adopts a detachable centrifugal separation design, which can efficiently separate and intercept fibers and dust in the test airflow without additional power or filter elements, effectively preventing the clogging of precision air circuit components, ensuring the detection accuracy and operational stability of the device, and is simple in structure and convenient to disassemble and maintain.

[0024] In this embodiment, a conical diffuser filter 5 is provided between the air inlet end of the annular clamping mechanism 1 and the air inlet end of the air pipe 2. The cone tip of the conical diffuser filter 5 faces the fabric sample inside the annular clamping mechanism 1, and a non-contact constant gap is provided between the cone tip and the fabric sample.

[0025] With this configuration, the technical feature employs a conical diffuser filter 5 with its cone apex facing the fabric sample. Through a non-contact, constant gap design between the cone apex and the fabric sample, it avoids compressing the sample and altering its original porosity, preventing interference with the uniform airflow field in the test area and ensuring that the test data meets standard requirements. Simultaneously, the conical structure significantly expands the effective interception area, efficiently intercepting fibers and dust detached from the fabric at the source, and is less prone to filter clogging, resulting in excellent airflow permeability. This conical diffuser filter 5 is positioned between the annular clamping mechanism 1 and the air inlet of the airway 2, serving as a pre-positioned protective structure for the device's anti-clogging system. It performs coarse filtration and interception of fibers and dust before they enter the airway 2, significantly reducing the impurity load on the downstream dust removal components 4, pressure regulating valve, and flow meter. Together with the centrifugal dust removal structure in the downstream airway, it forms a gradient protection, reducing airway blockage at the source, ensuring the testing accuracy and long-term operational stability of the entire device. Furthermore, the structure is compatible with existing clamping mechanisms, requiring no changes to the original core layout of the device.

[0026] In this embodiment, the two ends of the connecting pipe 41 are detachably connected by clamps 6, and a fluororubber sealing ring is embedded at the joint mating point.

[0027] With this design, the technical feature enables a detachable connection between the connecting pipe 41 and the gas pipeline 2 via the clamp 6, allowing for manual assembly and disassembly without the need for special tools, significantly reducing the difficulty of disassembling and maintaining the dust removal component 4. The fluororubber sealing ring embedded at the joint is suitable for negative pressure testing conditions, ensuring the sealing performance of the gas connection and preventing inaccurate test pressure differentials caused by leakage. It also exhibits excellent aging and corrosion resistance and a long service life. This quick-release sealing structure is located at both ends of the connecting pipe 41 of the dust removal component 4, allowing for rapid disassembly and cleaning of the dust removal component 4 without altering the original gas pipeline layout or disassembling the entire pipeline, thus meeting the high-frequency maintenance requirements of continuous batch testing. Combined with the reliable sealing of the fluororubber sealing ring, it ensures the stable airtightness of the entire test gas pipeline, preventing leakage from affecting the test accuracy of the device, and forming a complete anti-clogging maintenance system with the front and rear protection structures.

[0028] In this embodiment, the spiral guide 42 abuts against the inner wall of the pipe.

[0029] With this configuration, the annular gap between the spiral guide 42 and the inner wall of the pipe can be completely sealed through the contact design between the spiral guide 42 and the inner wall of the pipe. This prevents the test airflow from forming an untreated short-circuit airflow from the gap, ensuring that all airflow is converted into a stable forced rotating flow through the spiral guide 42. This ensures that the centrifugal separation effect of fibers and dust is stable and controllable. At the same time, it can also form a radial limit on the spiral guide 42 to prevent it from being displaced or shaking due to airflow impact, thus ensuring the continuous stability of the airflow field.

[0030] In this embodiment, the annular dust collection trough 43 and the connecting pipe 41 can be detachably connected by a threaded sealing connection.

[0031] With this configuration, the detachable threaded seal structure is located at the impurity collection end of the dust removal component 4, working in synergy with the upstream spiral guide 42 and the annular guide baffle 44. This allows for the rapid cleaning and maintenance of the dust collection tank without disassembling the entire dust removal component 4 or interrupting the testing process, perfectly meeting the high-frequency maintenance requirements of continuous batch quality inspection of fabrics. At the same time, the reliable threaded seal ensures the airtightness of the entire test air circuit, preventing impurities from flowing back into the main air circuit, continuously protecting precision components such as the downstream pressure regulating valve and flow meter, and ensuring the testing accuracy and long-term operational stability of the entire testing device.

[0032] In this embodiment, the connecting pipe 41 is made of transparent material so that the amount of dust accumulated in the dust collection tank can be observed and the pipe can be quickly disassembled for cleaning.

[0033] With this configuration, the transparent connecting pipe 41 is installed on the main body of the dust removal component 4, and works in conjunction with the front-end conical diffuser filter 5, the internal spiral guide 42, and the detachable annular dust collection tank 43. This allows for real-time monitoring of the impurity separation effect and dust accumulation status in the air path without interrupting the device's testing process or disassembling the entire air path. This ensures the continuous and stable operation of the entire gradient anti-clogging system, effectively avoids clogging failures of precision components such as the downstream pressure regulating valve and flow meter, and continuously guarantees the device's testing accuracy and batch continuous testing efficiency.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for measuring the permeation flow rate of clothing fabric, comprising an annular clamping mechanism (1), an air passage pipe, a negative pressure air source module (3) disposed on the output shaft of the air passage pipe (2), a flow meter disposed in the air passage pipe (2), a pressure regulating valve, and a dust removal assembly (4), characterized in that: The dust removal assembly (4) includes a detachable connecting pipe (41) installed in the air pipeline (2), and a spiral guide (42) is fixedly installed inside the connecting pipe (41) to convert the airflow into a forced rotation flow and centrifugally throw the dust to the pipe wall; The spiral guide (42) has an annular dust collection groove (43) recessed on the pipe wall downstream. The side wall of the dust collection groove facing the clean gas outlet has an inwardly protruding annular guide baffle (44). The baffle forms an aerodynamic barrier at the groove opening, causing the dust to slide into the groove and not be swept out by the main airflow.

2. The garment fabric permeation flow measuring device according to claim 1, characterized in that: A conical diffuser filter (5) is provided between the annular clamping mechanism (1) and the air inlet of the air pipeline (2). The cone tip of the conical diffuser filter (5) faces the fabric sample inside the annular clamping mechanism (1), and a non-contact constant gap is provided between the cone tip and the fabric sample.

3. The garment fabric permeation flow measuring device according to claim 1, characterized in that: The two ends of the connecting pipe (41) are detachably connected by clamps (6), and a fluororubber sealing ring is embedded at the joint.

4. The garment fabric permeation flow measuring device according to claim 1, characterized in that: The spiral guide (42) abuts against the inner wall of the pipe.

5. The garment fabric permeation flow measuring device according to claim 4, characterized in that: The annular dust collection trough (43) and the connecting pipe (41) can be detachably connected by a threaded sealing connection.

6. The garment fabric permeation flow measuring device according to claim 5, characterized in that: The connecting pipe (41) is made of transparent material so that the amount of dust accumulated in the dust collection tank can be observed and the pipe can be quickly disassembled and cleaned.

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