A test apparatus for detecting effluent materials from impregnated activated carbon

Abstract

The utility model belongs to test device technical field relates to impregnated activated carbon, disclose a kind of test device of detection impregnated activated carbon escaping material, including gas source processing device, compressed air passes through gas source processing device and enters temperature and humidity adjusting device adjustment, and the gas after adjustment enters escaping material test device, and after connecting gas detector detection escaping gas by sample measuring tube.The utility model adds computer control device, uses touch control display panel, carries out the setting of test condition, can accurately control test condition, so that test parameter control is more accurate, stable, improves test precision, enhances test consistency.

Description

Technical Field

[0001] This utility model belongs to the technical field of test devices, and relates to impregnated activated carbon, specifically a test device for detecting substances released from impregnated activated carbon. Background Technology

[0002] Impregnated activated carbon is a core filtration and purification material in protective equipment such as gas masks, personal protective equipment filters, and air purifiers. While the performance of impregnated activated carbon has been significantly improved with continuous advancements in the impregnation process, a new problem has emerged that urgently needs to be addressed. When users utilize protective equipment containing impregnated activated carbon in enclosed environments, an irritating odor may be produced, severely impacting the user experience, especially in high-temperature and high-humidity environments.

[0003] This invention addresses the aforementioned problems by simulating the temperature and humidity conditions of impregnated activated carbon in actual use, and testing the actual substances released from impregnated activated carbon and their content under different formulation systems and process conditions. Utility Model Content

[0004] In response to the issue that impregnated activated carbon can produce an irritating odor during actual use, affecting the user experience, this invention establishes an experimental device to detect substances emanating from impregnated activated carbon by simulating various temperature and humidity conditions close to actual use, providing guidance for the development and process improvement of impregnated activated carbon.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a test device for detecting substances leached from impregnated activated carbon, comprising:

[0006] An air source processing device, the air source processing device including a regulating filter, one end of the regulating filter is connected to compressed air and the other end is connected to a refrigerated dryer;

[0007] A temperature and humidity control device, wherein the inlet end of the temperature and humidity control device is connected to a refrigerated dryer and the outlet end is connected to an effluent testing device;

[0008] An efflux testing device includes a buffer tank, the inlet of which is connected to a temperature and humidity control device, and the outlet of which is divided into two paths: one is a test gas path and the other is a sample test gas path. The outlet of the test gas path serves as an exhaust outlet, and the sample test gas path includes a sample measuring tube connected to a gas detector.

[0009] Furthermore, the entire effluent testing device is located inside a constant temperature chamber, which maintains the test temperature through its constant temperature function.

[0010] Furthermore, it also includes a computer control device, which is located on one side of the constant temperature chamber; the computer control device includes a touch screen computer, which controls the temperature and humidity adjustment device and the constant temperature chamber.

[0011] Furthermore, solenoid valves are installed in the debugging gas path and the sample test gas path respectively, and the computer control device regulates the solenoid valves.

[0012] Furthermore, a stainless steel coil is connected between the temperature and humidity regulating device and the buffer tank. The stainless steel coil is embedded in the constant temperature chamber. When the temperature and humidity are regulated, the airflow passes through the stainless steel coil, making the temperature of the entire air path more uniform and stable.

[0013] Furthermore, a pressure sensor and a temperature and humidity sensor are connected to the buffer tank; a mass flow meter is connected to the outlet end of the buffer tank to control the airflow required for the test; the pressure sensor, temperature and humidity sensor, and mass flow meter are connected to a computer control device.

[0014] Furthermore, the effluent testing device is equipped with a test gas path panel.

[0015] Furthermore, the constant temperature chamber adopts a light-transmitting glass sliding door, which is located directly in front of the test air circuit panel to ensure that the test conditions inside the chamber can be observed throughout the entire test temperature range.

[0016] Furthermore, the sample measuring tube is fixed to the test gas pavement slab by a measuring tube clamp. The measuring tube clamp is designed according to the external dimensions of the sample measuring tube for easy installation and disassembly.

[0017] The working principle and operation process of this utility model are as follows:

[0018] Compressed air is introduced into the air source, purified by a regulating filter, and then connected to a refrigerated dryer for drying, reducing the humidity of the air source. The airflow passes through a temperature and humidity regulating device, which first heats and then humidifies to control the airflow to the temperature and humidity set for the test conditions. It then enters the stainless steel coil between the temperature and humidity regulating device and the buffer tank, making the temperature of the entire air path more uniform and stable. The buffer tank is connected to a pressure sensor and a temperature and humidity sensor, and a mass flow meter is connected to the outlet of the buffer tank to control the airflow required for the test. The outlet of the buffer tank branches into two paths: one for debugging and the other for sample testing.

[0019] During the preparation phase, the gas flow is first discharged through the test gas path. After the temperature, humidity, and gas flow rate stabilize, the sample measurement tube is connected, and the test begins. At this time, the computer control device controls the solenoid valve to automatically switch from the test gas path to the sample test gas path. After the gas with constant temperature, humidity, and flow rate passes through the sample measurement tube, it is connected to a gas detector to monitor in real time and automatically record the type and content of the exhaust gas from the sample measurement tube.

[0020] The touchscreen computer allows for setting test parameters, performing airtightness self-checks, preparing test conditions, and purging pipelines. Before starting the test, turn on the air source and power to all equipment; set the test parameters, enter the preparation state, and adjust the temperature and humidity; once preparation is complete, the test can begin.

[0021] After the test, switch to purging mode to purge the pipeline and gas detector. After purging, turn off the temperature and humidity control device, the effluent test device, the gas source, and the power supply.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] This invention incorporates a computer control device and a touch-screen display panel for setting test conditions, enabling precise control of experimental conditions. This results in more accurate and stable control of test parameters, improving test precision and consistency. The entire device uses corrosion-resistant piping connections and a high-precision corrosion-resistant mass flow meter, further enhancing the control accuracy of test conditions. Attached Figure Description

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 This is the overall system air circuit diagram of this utility model.

[0026] Figure 2 This is a front structural diagram of the present invention.

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the constant temperature chamber.

[0028] Figure 4 Diagram of the internal air circuit panel of the constant temperature chamber.

[0029] In the diagram, 1-adjusting filter; 2-refrigerated dryer; 3-temperature and humidity control device; 4-constant temperature chamber; 41-test gas path panel; 42-transparent glass sliding door; 5-buffer tank; 51-pressure sensor; 52-temperature and humidity sensor; 53-mass flow meter; 6-exhaust outlet; 7-sample measuring tube; 71-measuring tube clamp; 8-gas detector; 9-touchscreen computer. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example: Reference Figure 1-4 The apparatus shown is a test device for detecting substances escaping from impregnated activated carbon. It includes a gas source treatment device. Compressed air enters the temperature and humidity control device 3 through the gas source treatment device for adjustment. The adjusted gas enters the escaping substance test device and is connected to a gas detector 8 after passing through the sample measuring tube 7 to detect the escaping gas.

[0032] 1. Gas source processing device

[0033] Please see Figures 1-2 The air source treatment device includes a regulating filter 1, one end of which is connected to compressed air and the other end is connected to a refrigerated dryer 2. The outlet of the refrigerated dryer 2 is connected to a temperature and humidity regulating device 3.

[0034] 2. Temperature and humidity control device

[0035] Please see Figure 2 The inlet of the temperature and humidity control device 3 is connected to the refrigerated dryer 2, and the outlet is connected to the effluent test device.

[0036] Among them, a stainless steel coil is connected between the temperature and humidity control device 3 and the buffer tank 5. The stainless steel coil is embedded in the constant temperature box 4. When the temperature and humidity are controlled, the airflow flows through the stainless steel coil, making the temperature of the entire air path more uniform and stable.

[0037] 3. Escapee testing apparatus

[0038] Please see Figures 2-4 The effluent testing device includes a buffer tank 5, with a temperature and humidity control device 3 connected to the inlet end of the buffer tank 5. The outlet end has two branches: one is a test gas path, and the other is a sample test gas path. The outlet of the test gas path serves as the exhaust outlet 6. The sample test gas path includes a sample measuring tube 7, which is connected to a gas detector 8. The gas detector 8 monitors and automatically records the type and content of the exhaust gas from the sample measuring tube 7 in real time.

[0039] The entire effluent testing device is located inside the constant temperature chamber 4, and the constant temperature chamber 4 ensures the test temperature.

[0040] Please see Figure 2A pressure sensor 51 and a temperature and humidity sensor 52 are connected to the buffer tank 5. The pressure sensor 51 can provide a more stable airflow for the test. A mass flow meter 53 is connected to the outlet of the buffer tank 5 to control the airflow required for the test. The pressure sensor 51, temperature and humidity sensor 52 and mass flow meter 53 are controlled by a computer control device.

[0041] Please see Figure 3 The effluent testing device is equipped with a test gas path panel 41. The constant temperature chamber 4 uses a light-transmitting glass sliding door 42, which is located directly in front of the test gas path panel 41 to ensure that the test conditions inside the chamber can be observed throughout the entire test temperature range.

[0042] Please see Figure 4 The sample measuring tube 7 is fixed to the test gas path panel 41 by the measuring tube clamp 71. The measuring tube clamp 71 is designed according to the external dimensions of the sample measuring tube 7, which facilitates installation and disassembly.

[0043] 4. Computer control device

[0044] Please see Figure 1 The computer control device is located on one side of the constant temperature chamber 4; the computer control device includes a touch screen computer 9, which controls the temperature and humidity regulating device 3 and the constant temperature chamber 4.

[0045] Furthermore, solenoid valves are installed in the debugging gas path and the sample test gas path, respectively, and the computer control device regulates the solenoid valves.

[0046] The touchscreen computer 9 features a buzzer and indicator lights at the bottom; it uses the Windows CE operating system and allows for parameter settings and related software operations via the touchscreen.

[0047] I. Test conditions required for the test apparatus for detecting substances leached from impregnated activated carbon

[0048] Test airflow temperature: 40.0±0.5℃.

[0049] The relative humidity of the test airflow was 80±1%RH.

[0050] Airflow specific velocity: 1.5L ± 0.02 / min·cm 2 .

[0051] Carbon layer height: 5cm.

[0052] II. Working principle and operation procedure of the test device for detecting substances released from impregnated activated carbon

[0053] Compressed air is introduced into the air source, filtered by the regulating filter 1, and then connected to the refrigerated dryer 2 for drying to reduce the humidity of the air source. The airflow passes through the temperature and humidity regulating device 3, which first heats up and then humidifies to regulate the airflow to the temperature and humidity set for the test conditions; then it flows into the stainless steel coil between the temperature and humidity regulating device 3 and the buffer tank 5, making the temperature of the entire air path more uniform and stable. The buffer tank 5 is equipped with a pressure sensor 51 and a temperature and humidity sensor 52. The outlet of the buffer tank 5 is connected to a mass flow meter 53 to control the airflow required for the test; the outlet of the buffer tank 5 is divided into two paths, one for debugging and the other for sample testing.

[0054] During the preparation phase, the gas flow is first discharged through the debugging gas path. After the temperature, humidity, and gas flow rate stabilize, it is connected to the sample measuring tube 7 to begin the test. At this time, the computer control device controls the solenoid valve to automatically switch from the debugging gas path to the sample test gas path. After the gas with constant temperature, humidity, and flow rate passes through the sample measuring tube 7, it is connected to the gas detector 8 to monitor in real time and automatically record the type and content of the exhaust gas from the sample measuring tube 7.

[0055] The touch panel of the touch-screen computer 9 allows for setting test parameters, performing airtightness self-tests, preparing test conditions, and purging pipelines. Before the test begins, turn on the air source and power to all equipment; set the test parameters, enter the preparation state, and adjust the temperature and humidity; once preparation is complete, the test can begin.

[0056] After the test, switch to purging mode to purge the pipeline and gas detector. After purging, turn off the temperature and humidity control device, the effluent test device, the gas source, and the power supply.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A test apparatus for detecting substances leached from impregnated activated carbon, characterized in that: include: An air source processing device, the air source processing device includes a regulating filter (1), one end of the regulating filter (1) is connected to compressed air and the other end is connected to a refrigerated dryer (2). Temperature and humidity control device (3), the inlet end of the temperature and humidity control device (3) is connected to the refrigerated dryer (2), and the outlet end is connected to the effluent test device; The efflux testing device includes a buffer tank (5), the inlet end of which is connected to a temperature and humidity control device (3), and the outlet end is divided into two paths, one being a test gas path and the other being a sample test gas path; the outlet of the test gas path is used as an exhaust outlet (6), and the sample test gas path includes a sample measuring tube (7), which is connected to a gas detector (8).

2. The test apparatus for detecting substances leached from impregnated activated carbon according to claim 1, characterized in that: The entire effluent testing device is located inside the constant temperature chamber (4).

3. The test apparatus for detecting substances leached from impregnated activated carbon according to claim 2, characterized in that: It also includes a computer control device, which is located on one side of the constant temperature chamber (4); the computer control device includes a touch screen computer (9), which controls the temperature and humidity regulating device (3) and the constant temperature chamber (4).

4. The test apparatus for detecting substances leached from impregnated activated carbon according to claim 3, characterized in that: The computer control device is connected to a solenoid valve, which is connected to both the debugging gas path and the sample test gas path.

5. The test apparatus for detecting substances leached from impregnated activated carbon according to claim 3, characterized in that: A stainless steel coil is connected between the temperature and humidity regulating device (3) and the buffer tank (5), and the stainless steel coil is embedded in the constant temperature box (4).

6. The test apparatus for detecting substances leached from impregnated activated carbon according to claim 5, characterized in that: A pressure sensor (51) and a temperature and humidity sensor (52) are connected to the buffer tank (5), and a mass flow meter (53) is connected to the outlet end of the buffer tank (5); the pressure sensor (51), the temperature and humidity sensor (52) and the mass flow meter (53) are connected to a computer control device.

7. The test apparatus for detecting substances leached from impregnated activated carbon according to claim 1, characterized in that: The effluent testing device is equipped with a test gas path panel (41).

8. The test apparatus for detecting substances leached from impregnated activated carbon according to claim 5, characterized in that: The constant temperature chamber (4) adopts a light-transmitting glass sliding door (42), which is located in front of the test gas circuit panel (41) to ensure that the test conditions inside the chamber are visible.

9. The test apparatus for detecting substances leached from impregnated activated carbon according to claim 8, characterized in that: The sample measuring tube (7) is fixed on the test gas circuit panel (41) by the measuring tube clamp (71).

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