A multi-channel air filter material air blowing aging test device

Abstract

The present invention discloses a multi-channel air filter material air blowing aging test device, which includes an intake air flow main line, a temperature and humidity sensor, a flow equalizing orifice plate, an atmospheric dust concentration detection device and at least two filter material test units, the intake air flow main line is provided with a temperature and humidity sensor and a flow equalizing orifice plate, the filter material test unit includes a pneumatic module, a filter material fixture and a flow control module, the pneumatic module is used to drive the filter material fixture to open and close, the filter material fixture is used to clamp the filter material to be tested, the flow control module is used to draw air into the filter material fixture and pass through the filter material, the inlet and outlet ends of the filter material fixture are connected to the atmospheric dust concentration detection device to detect the atmospheric dust concentration at both ends. The present invention uses atmospheric dust as a test dust source, which is conducive to analyzing the performance of the filter material under practical working conditions; and multiple filter material test units are set up, which can analyze the performance differences of different filter materials under the same working conditions, and can also analyze the performance differences of the same filter material under different test parameters.

Description

Technical Field

[0001] The invention relates to an air blowing aging test device for a multi-channel air filter material, belonging to the technical field of air purification. Background Art

[0002] With the enhancement of people's environmental awareness and the continuous improvement of national laws and regulations, the requirements for air quality are getting higher and higher, and the air filtration industry has maintained a high-speed development in the domestic market. There are many types of air filtration materials with different performances. According to the fiber material, the filter material is divided into natural fiber and synthetic fiber filter material. According to the preparation process, the filter material is divided into woven, knitted, non-woven filter material, etc. For the air filtration industry, it is a basic requirement to comprehensively evaluate the performance of various filter materials, combine factors such as material cost, production process, and customer needs, and launch matching filtration products for customers.

[0003] At present, the main method for evaluating filter material performance in China is to evaluate the resistance, efficiency, dust holding capacity and other indicators of the filter material under the test standard conditions based on relevant test standards, test aerosol, test dust, test temperature and humidity, test air volume and other parameters. The test conditions set by the test standards are to simulate the practical working conditions of the filter material, accelerate the aging process of the filter material, and facilitate the comparison of the performance indicators of different filter materials on the market under the same test conditions. However, this cannot fully reflect the performance of the filter material during its actual life cycle.

[0004] Currently, there is very little research on air-blowing aging tests for filter media, and there is a lack of corresponding testing equipment on the market. Enterprises with testing needs generally make non-standard customizations. Most of the test benches currently known are single-channel test benches, which can only test one type of filter media at a time and cannot compare the performance of different filter media in the same atmospheric environment.

[0005] Patent search for similar test devices also yielded few results. Patent application number 201820963974.3 proposes a dust filter material performance test device that can use atmospheric dust or special test dust as the test dust source to test the performance of the filter material in actual use conditions. However, the device only has one test air duct and cannot compare the performance of different filter materials under the same working conditions at the same time. Patent application number 201820867389.3 proposes a multi-channel gaseous pollutant purification filter material performance test system that can simultaneously measure the gaseous pollutant filtration performance of multiple filter materials under the same test conditions. However, the device uses specific gaseous pollutants as test aerosols and does not have an aerosol sampling port. This is different from the purpose of the filter material air blowing aging test, and the results cannot automatically obtain the real-time efficiency of the filter material in the system. Summary of the invention

[0006] The object of the present invention is to provide a multi-channel air filter material air blowing aging test device to achieve the test performance of different filter materials under the same working conditions or the test performance of the same filter material under different working conditions.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a multi-channel air filter material air blowing aging test device, which includes an intake air flow main line, a temperature and humidity sensor, a flow balancing orifice plate, an atmospheric dust concentration detection device and at least two filter material test units, the temperature and humidity sensor and the flow balancing orifice plate are arranged on the pipeline of the intake air flow main line, the flow balancing orifice plate is used to evenly disperse the atmospheric dust concentration in the test air, the outlet end of the intake air flow main line is connected to each filter material test unit through an intake diversion pipeline, the filter material test unit includes a pneumatic module, a filter material fixture and a flow control module, the pneumatic module is used to drive the filter material fixture to open and close, the filter material fixture is used to clamp the filter material to be tested, the flow control module is arranged at the rear end of the filter material fixture, and is used to absorb the air in the intake air flow main line into the filter material fixture and pass through the filter material to be tested, the inlet and outlet ends of the filter material fixture are connected to the atmospheric dust concentration detection device through an atmospheric dust sampling pipeline, and the atmospheric dust concentration at its inlet and outlet ends is detected by the atmospheric dust concentration detection device.

[0008] Furthermore, the testing device also includes a computer control system, which controls the operation and data collection of the entire testing device, and includes a computer, a touch screen, an electrical control system, and a software operating system. The temperature and humidity sensors, the atmospheric dust concentration detection device, and the filter material testing unit are respectively communicated with the computer control system. The computer control system is also remotely connected to the Internet of Things remote monitoring platform through the Internet of Things, and the Internet of Things remote monitoring platform realizes operation status perception, fault diagnosis and remote control.

[0009] Furthermore, the filter material clamp includes an upstream clamp and a downstream clamp, the upstream clamp is connected to a pneumatic module, and the opening and closing of the upstream clamp is controlled by the pneumatic module. The upstream clamp and the downstream clamp are both provided with a pressure difference sampling port and an atmospheric dust sampling port.

[0010] Furthermore, a differential pressure sensor is provided between the upstream fixture and the downstream fixture, and both ends of the differential pressure sensor are respectively connected to the differential pressure sampling ports on the upstream fixture and the downstream fixture. The differential pressure data collected by the differential pressure sensor is sent to the computer for processing, display, recording and storage.

[0011] Furthermore, the atmospheric dust sampling ports on the upstream fixture and the downstream fixture are connected to the atmospheric dust concentration detection device through upstream and downstream atmospheric dust sampling pipelines, wherein the air inlet ends of the upstream atmospheric dust sampling pipeline and the downstream atmospheric dust sampling pipeline are connected to the atmospheric dust sampling ports on the filter material fixture, and the air outlet ends are connected to the main pipeline of the atmospheric dust concentration detection device.

[0012] Furthermore, the upstream and downstream atmospheric dust sampling pipelines are both provided with sampling distributors, and the pipeline switches are automatically controlled by the sampling distributors, so that an atmospheric dust concentration detection device is used to cyclically sample the upstream and downstream atmospheric dust concentrations of each test filter material, and the detected atmospheric dust concentration data is sent to a computer for processing, display, recording and storage.

[0013] Furthermore, the pneumatic modules are connected to compressed air pipelines, and the compressed air pipelines are used to provide required compressed air for each pneumatic module.

[0014] Furthermore, the pneumatic module includes a speed regulating valve, a solenoid valve and a cylinder, and controls the opening and closing of the filter material clamp by driving the cylinder to move through compressed air, wherein the speed regulating valve is used to control the operating speed of the cylinder, and the solenoid valve is used to control the start and stop of the cylinder.

[0015] Furthermore, the flow control module includes a capsule filter, a gas flow meter and a power adsorption unit. The capsule filter is used to purify atmospheric dust after filtration by the test filter material and protect the gas flow meter at the rear end. The gas flow meter and the power adsorption unit are interconnected with the computer control system. The corresponding test flow is set in the operation interface through the computer control system, and the gas flow meter and the power adsorption unit automatically adjust the test flow to keep the flow stable.

[0016] Furthermore, the power adsorption unit adopts a frequency converter + centrifugal fan or a pressure regulating valve + vacuum pump.

[0017] Furthermore, the atmospheric dust concentration detection device is an environmental dust meter or a particle counter, which is used to measure the mass concentration or number concentration of atmospheric dust upstream and downstream of the filter material, and send the monitoring data to the computer control system, and the system automatically calculates the filtration efficiency of the filter material; wherein a particle counter is preferably used to detect the atmospheric dust concentration, and an aerosol diluter needs to be installed at the front end of the particle counter to dilute the atmospheric dust particle concentration and protect the particle counter.

[0018] The beneficial effects of the present invention are as follows:

[0019] (1) The present invention uses atmospheric dust as the test dust source to monitor the changes in atmospheric dust temperature and humidity, filter material resistance and filter material efficiency during the air blowing aging process of the filter material in real time, which is conducive to analyzing the performance of the filter material under practical working conditions;

[0020] (2) The present invention provides multiple filter material testing units, each of which can be operated independently and can be set with different test parameters, which is conducive to analyzing the performance differences of different filter materials under the same working conditions, and can also analyze the performance differences of the same filter material under different test parameters;

[0021] (3) The present invention uses a computer control system to control each filter material test unit, and uses an atmospheric dust concentration detection device to cyclically sample the upstream and downstream atmospheric dust concentrations of each filter material through different pipeline switches, which has a high degree of automation and is convenient for atmospheric dust sampling;

[0022] (4) The present invention establishes an Internet of Things remote monitoring system, adopts Internet of Things technology to remotely collect test device data, and realizes functions such as test device operating status perception, fault diagnosis and remote control. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the filter material fixture structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the workflow of the present invention.

[0026] Marked in the figure: 1-speed regulating valve, 2-solenoid valve, 3-cylinder, 4-temperature and humidity sensor, 5-filter material fixture, 6-pressure difference sensor, 7-sampling distributor, 8-capsule filter, 9-gas flow meter, 10-frequency converter, 11-centrifugal fan, 12-atmospheric dust concentration detection device, 13-computer control system, 14-Internet of Things remote monitoring platform, 15-pressure difference sampling port, 16-atmospheric dust sampling port, 17-flow equalizing orifice plate. DETAILED DESCRIPTION

[0027] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1 and 2 The present invention provides an embodiment: a multi-channel air filter material air blowing aging test device, comprising: an Internet of Things remote monitoring platform 14, a computer control system 13, a test box, an air flow pipeline, a temperature and humidity sensor 4, a flow equalizing orifice plate 17, a compressed air pipeline, an atmospheric dust concentration detection device 12 and a filter material test unit. Among them:

[0029] Internet of Things remote monitoring platform 14: It uses Internet of Things technology to remotely communicate with the computer control system 13, collects test device data, and realizes functions such as test bench operation status perception, fault diagnosis and remote control.

[0030] Computer control system 13: controls the operation and data collection of the entire test device, including a computer / touch screen, an electrical control system, a software operating system, a temperature and humidity sensor 4, an atmospheric dust concentration detection device 4, and a filter material test unit are respectively connected to the computer control system for communication.

[0031] Test box: Made of aluminum alloy and stainless steel, the filter material clamping module is installed on the box table, and the filter material clamping surface is parallel to the box table.

[0032] Air flow pipeline: including the main air intake pipeline, multiple filter material test unit branch pipelines, negative pressure pipelines, etc.

[0033] Temperature and humidity sensor 4: placed in the main air intake path, measures the temperature and humidity of atmospheric dust at the intake end, and the ambient temperature and humidity data are sent to the computer, processed by software, displayed, recorded and saved.

[0034] Flow equalizing orifice plate 17: placed in the main air intake air flow path, used to evenly disperse the atmospheric dust concentration in the test air.

[0035] Compressed air pipeline: used to introduce compressed air. The pipeline is equipped with a speed regulating valve 1 and a solenoid valve 2 to provide the compressed air required by the pneumatic modules of each filter material test unit.

[0036] Atmospheric dust concentration detection device 12: It can be an environmental dust meter or a particle counter. By measuring the mass concentration or number concentration of atmospheric dust upstream and downstream of the filter material, the system automatically calculates the filtration efficiency of the filter material. It is preferred to use a particle counter to detect the atmospheric dust concentration, and an aerosol diluter needs to be installed at the front end to dilute the atmospheric dust particle concentration and protect the particle counter.

[0037] Filter material test unit: The test device can be equipped with 1-10 filter material test units, and each test unit can operate independently. Each test unit includes: pneumatic module, filter material fixture 5, differential pressure sensor 6, atmospheric dust sampling module, and flow control module. Among them:

[0038] (a) Filter material test unit branch pipeline: Provide test air dust for each filter material test unit, and adjust the test flow rate through the flow control module;

[0039] (b) Pneumatic module: including a speed regulating valve 1, a solenoid valve 2 and a cylinder 3, which is used to control the opening and closing of the clamp;

[0040] (c) Filter material fixture 5: including an upstream fixture and a downstream fixture, the upstream fixture is connected to a pneumatic module, and the opening and closing of the upstream fixture is controlled by the pneumatic module, and a pressure difference sampling port 15 and an atmospheric dust sampling port 16 are provided on both the upstream fixture and the downstream fixture;

[0041] (d) Differential pressure sensor 6: A differential pressure sensor 6 is provided between the upstream fixture and the downstream fixture, and both ends of the differential pressure sensor 6 are connected to the upstream and downstream differential pressure sampling ports 15 on the fixture, respectively. The differential pressure data is sent to the computer, processed by the software, and displayed, recorded, and saved;

[0042] (e) The atmospheric dust sampling module includes: an atmospheric dust sampling pipeline, a sampling distributor 7 and an atmospheric dust concentration detection device 12. The air inlet ends of the upstream atmospheric dust sampling pipeline and the downstream atmospheric dust sampling pipeline are connected to the atmospheric dust sampling port 16 on the filter material fixture, and the air outlet ends are connected to the main pipeline of the atmospheric dust concentration detection device 12. By arranging the sampling distributor 7 in the atmospheric dust sampling pipeline to automatically control the pipeline switch, the use of an atmospheric dust concentration detection device 12 can cyclically sample the upstream and downstream atmospheric dust concentrations of each tested filter material, and the atmospheric dust concentration data is sent to the computer, processed by the software, and displayed, recorded and saved.

[0043] (f) The flow control module includes: capsule filter 8, gas flow meter 9, frequency converter 10 + centrifugal fan 11 or pressure regulating valve + vacuum pump, preferably frequency converter + centrifugal fan, which has low noise and high operation efficiency. The capsule filter is used to purify atmospheric dust after being filtered by the test filter material, and protect the gas flow meter, frequency converter and centrifugal fan at the rear end. The gas flow meter, frequency converter and centrifugal fan are linked with the computer control system 13. By setting the corresponding test flow in the operation interface, the gas flow meter, frequency converter and centrifugal fan automatically adjust the test flow to keep the flow stable.

[0044] like Figure 3 The working principle of the present invention is as follows: first, the filter material clamp is opened through the pneumatic module, and then the filter material to be tested is placed between the filter material clamps. After the placement is completed, the filter material clamp is closed through the pneumatic module, and then the test parameters are input through the computer control system and the fan is started. After the fan is running, the atmospheric dust is sucked into the clamp through the pipeline and passes through the filter material to be tested. During this process, the temperature and humidity sensor 4, the atmospheric dust concentration detection device 12 and the pressure difference sensor 6 will detect the temperature and humidity of the atmospheric dust in the test, the mass concentration or number concentration of the atmospheric dust upstream and downstream of the filter material, and the pressure difference data between the upstream clamp and the downstream clamp, and the detection data will be sent to the computer control system for calculation and analysis.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the protection scope of the present invention in any form, and all technical solutions obtained by equivalent replacement and the like fall within the protection scope of the present invention.

[0046] The parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art.

Claims

1. A multi-channel air filter material air blowing aging test device, characterized in that: It comprises an intake air flow main line, a temperature and humidity sensor, a flow balancing orifice plate, an atmospheric dust concentration detection device and at least two filter material test units, wherein the temperature and humidity sensor and the flow balancing orifice plate are arranged on the pipeline of the intake air flow main line, and the air outlet end of the intake air flow main line is connected to each filter material test unit through an intake air diversion pipeline, and the filter material test unit comprises a pneumatic module, a filter material fixture and a flow control module, wherein the pneumatic module is used to drive the filter material fixture to open and close, and the filter material fixture is used to clamp the filter material to be tested, and the flow control module is arranged at the rear end of the filter material fixture, and is used to draw air in the intake air flow main line into the filter material fixture and pass through the filter material to be tested, and the inlet and outlet ends of the filter material fixture are connected to the atmospheric dust concentration detection device through an atmospheric dust sampling pipeline, and the atmospheric dust concentration at its inlet and outlet ends is detected by the atmospheric dust concentration detection device; The filter material fixture comprises an upstream fixture and a downstream fixture, the upstream fixture is connected to a pneumatic module, the opening and closing of the upstream fixture is controlled by the pneumatic module, and a pressure differential sampling port and an atmospheric dust sampling port are provided on the upstream fixture and the downstream fixture; a pressure differential sensor is provided between the upstream fixture and the downstream fixture, and two ends of the pressure differential sensor are respectively connected to the pressure differential sampling ports on the upstream fixture and the downstream fixture, and the pressure differential data collected by the pressure differential sensor is sent to a computer for processing, display, recording, and storage; The atmospheric dust sampling ports on the upstream fixture and the downstream fixture are connected to the atmospheric dust concentration detection device through upstream and downstream atmospheric dust sampling pipelines, wherein the air inlet ends of the upstream atmospheric dust sampling pipeline and the downstream atmospheric dust sampling pipeline are connected to the atmospheric dust sampling ports on the filter material fixture, and the air outlet ends are connected to the main pipeline of the atmospheric dust concentration detection device; the upstream and downstream atmospheric dust sampling pipelines are both provided with sampling distributors, and the pipeline switches are automatically controlled by the sampling distributors, so that the upstream and downstream atmospheric dust concentrations of each tested filter material are cyclically sampled by using one atmospheric dust concentration detection device, and the detected atmospheric dust concentration data are sent to a computer for processing, display, recording and storage.

2. A multi-channel air filter material air blowing aging test device according to claim 1, characterized in that: The test device also includes a computer control system, which controls the operation and data collection of the entire test device. The computer control system includes a computer, a touch screen, an electrical control system, and a software operating system. The temperature and humidity sensor, the atmospheric dust concentration detection device, and the filter material testing unit are respectively communicated with the computer control system. The computer control system is also remotely connected to the Internet of Things remote monitoring platform through the Internet of Things, and the Internet of Things remote monitoring platform realizes operation status perception, fault diagnosis and remote control.

3. The multi-channel air filter material air blowing aging test device according to claim 1, characterized in that: The pneumatic module is connected to a compressed air pipeline, which provides the required compressed air to each pneumatic module; the pneumatic module includes a speed regulating valve, a solenoid valve and a cylinder, which controls the opening and closing of the filter material clamp by driving the cylinder to move through compressed air, wherein the speed regulating valve is used to control the operating speed of the cylinder, and the solenoid valve is used to control the start and stop of the cylinder.

4. The multi-channel air filter material air blowing aging test device according to claim 1, characterized in that: The flow control module includes a capsule filter, a gas flow meter and a power adsorption unit. The capsule filter is used to purify atmospheric dust after being filtered by the test filter material and protect the gas flow meter at the rear end. The gas flow meter and the power adsorption unit are interconnected with the computer control system. The corresponding test flow is set on the operation interface through the computer control system, and the gas flow meter and the power adsorption unit automatically adjust the test flow to keep the flow stable.

5. A multi-channel air filter material air blowing aging test device according to claim 4, characterized in that: The power adsorption unit adopts a frequency converter + a centrifugal fan or a pressure regulating valve + a vacuum pump.

6. The multi-channel air filter material air blowing aging test device according to claim 1, characterized in that: The atmospheric dust concentration detection device is an environmental dust meter or a particle counter, which is used to measure the mass concentration or number concentration of atmospheric dust upstream and downstream of the filter material, and send the monitoring data to the computer control system, and the system automatically calculates the filtration efficiency of the filter material; wherein an aerosol diluter is installed at the front end of the particle counter to dilute the atmospheric dust particle concentration and protect the particle counter.

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