A self-cleaning filter test device

Abstract

The utility model relates to filter testing device technical field discloses a kind of self-cleaning filter testing device, including first box and second box, air duct is opened in the first box, flow equalizing plate and filter piece mounting portion are sequentially arranged from left to right in the second box, fan mounting portion is installed in the side of the second box, and cleaning assembly is also provided in the second box, for cleaning filter piece, the filter efficiency, resistance, dust capacity of medium filter can be detected under different cleaning water pressure and flow by filter piece mounting portion and cleaning assembly, filter efficiency, resistance, dust capacity of filter after cleaning, when detection is completed, it can directly clean, it is convenient for user operation, solve the problem that the cost of test bench in prior art is higher, and not easy to operate.

Description

Technical Field

[0001] This utility model relates to the technical field of filter testing devices, and in particular to a self-cleaning filter testing device. Background Technology

[0002] Test filters, including media filters and electrostatic filters, are devices used to remove particulate matter and other contaminants from fluids (usually air or liquid). They are widely used in industrial, commercial, and residential environments to ensure air quality, process purity, and product quality. Media filters are devices that use physical interception mechanisms to capture and remove particles from fluids, while electrostatic filters use electrostatic forces to capture particulate matter.

[0003] In the existing technology, the test bench for testing media filters is expensive, and the efficiency decline after cleaning is uncertain, which increases the cost of equipment purchase and maintenance for enterprises, and is not easy to operate. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a self-cleaning filter testing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A self-cleaning filter testing device includes a first chamber and a second chamber. The first chamber has an air duct. The second chamber has a flow equalization plate and a filter element mounting part arranged from left to right. A fan mounting part is installed on one side of the second chamber. The second chamber also has a cleaning component for cleaning the filter element.

[0007] Preferably, the second housing is also provided with an electrostatic precipitator mounting section.

[0008] Preferably, the cleaning assembly includes a lifting drive assembly installed in the second housing and a water distributor installed at the drive end of the lifting drive assembly. The lifting drive assembly is located between the filter mounting part and the electrostatic precipitator mounting part. Several nozzles are installed on both sides of the water distributor. A water pumping assembly is provided on one side of the second housing. A connecting pipe is installed at the output end of the water pumping assembly, and the other end of the connecting pipe is connected to the water distributor.

[0009] Preferably, an electric water curtain is installed at the top of the inner cavity of the second box, and the electric water curtain is located between the cleaning component and the fan mounting part.

[0010] Preferably, the lifting drive assembly includes a connecting plate disposed between the filter mounting part and the electrostatic precipitator mounting part, a screw drive device fixedly mounted on the top of one side of the connecting plate, a screw disposed at the drive end of the screw drive device, and a slider spirally connected to the outside of the screw. The water distributor is disposed on one side of the slider, and one side of the slider is movably abutting against the connecting plate.

[0011] Preferably, the pumping assembly includes a water storage tank, a water pump is provided on one side of the water storage tank, the output end of the water pump is connected to a connecting pipe, and a regulating valve, a pressure gauge and a flow meter are installed sequentially on the connecting pipe.

[0012] Preferably, a water storage tank is provided at the bottom of the second box, and a water outlet is provided on one side of the water storage tank.

[0013] Preferably, an air inlet is provided at the top of the first housing, and a dust feeder is installed on one side of the air inlet.

[0014] Preferably, two particulate matter sensors are installed on the inner wall of the second chamber, and the two particulate matter sensors are respectively located on both sides of the filter element mounting part. A first differential pressure sensor and a second differential pressure sensor are installed on the inner wall of the second chamber, and the two ends of the first differential pressure sensor are respectively located on both sides of the filter element mounting part, and the two ends of the second differential pressure sensor are respectively located on both sides of the electrostatic precipitator mounting part.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention features a filter mounting section for installing a media filter and a fan mounting section for installing a fan. The fan drives airflow to test the filtration efficiency of the media filter. After testing, the media filter can be cleaned using a cleaning component. Compared to existing technologies, this device has a simple structure. Through the filter mounting section and cleaning component, it can test the filtration efficiency, resistance, and dust holding capacity of the media filter, as well as the filtration efficiency, resistance, and dust holding capacity of the cleaned filter under different cleaning water pressures and flow rates. After testing, it can be cleaned directly, making it easy for users to operate. This invention solves the problems of high cost and difficult operation of existing test benches. Attached Figure Description

[0017] Figure 1 This is a plan view of a self-cleaning filter testing device proposed in this utility model;

[0018] Figure 2 This is a three-dimensional internal schematic diagram of a self-cleaning filter testing device proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the lifting drive assembly of a self-cleaning filter testing device proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the water storage tank of a self-cleaning filter test device proposed in this utility model.

[0021] In the diagram: 1. First housing; 2. Second housing; 3. Air duct; 4. Flow equalization plate; 5. Filter mounting section; 6. Electrostatic precipitator mounting section; 7. Fan mounting section; 8. Water distributor; 9. Nozzle; 10. Connecting pipe; 11. Connecting plate; 12. Screw drive device; 13. Screw; 14. Slider; 15. Water storage tank; 16. Water pump; 17. Regulating valve; 18. Pressure gauge; 19. Flow meter; 20. Water storage tank; 21. Water outlet; 22. Electric water curtain; 23. Air inlet; 24. Dust feeder; 25. Particulate matter sensor; 26. First differential pressure sensor; 27. Second differential pressure sensor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1 to 4 A self-cleaning filter testing device includes a first housing 1 and a second housing 2. The first housing 1 has an air duct 3. The second housing 2 has a flow equalization plate 4 and a filter element mounting part 5 arranged from left to right. A fan mounting part 7 is installed on one side of the second housing 2. The air duct 3 is connected to the fan mounting part 7 through the flow equalization plate 4 and the filter element mounting part 5. The second housing 2 also has a cleaning component for cleaning the filter element.

[0024] The filter element mounting part 5 is used to install a filter screen or a media filter;

[0025] The second housing 2 is also equipped with an electrostatic precipitator mounting section 6, which houses an electrostatic filter.

[0026] The fan mounting section 7 includes a mounting bracket on one side of the second housing 2 and an air outlet on one side of the second housing 2. A fan is mounted on the mounting bracket. When the fan draws air, it can drive the air flow in the air duct 3.

[0027] Two particulate matter sensors 25 are installed on the inner wall of the inner cavity of the second housing 2. The two particulate matter sensors 25 are respectively located on both sides of the filter element mounting part 5. A first differential pressure sensor 26 and a second differential pressure sensor 27 are installed on the inner wall of the inner cavity of the second housing 2. The two ends of the first differential pressure sensor 26 are respectively located on both sides of the filter element mounting part 5, and the two ends of the second differential pressure sensor 27 are respectively located on both sides of the electrostatic precipitator mounting part 6. The particulate matter sensors 25 are used to detect the amount of dust on both sides of the media filter, and the first differential pressure sensor 26 is used to detect the pressure difference on both sides of the media filter to calculate the air resistance and purification efficiency at this time (the test method refers to GB / T 14295-2019 "Air Filters"). The second differential pressure sensor 27 is used to detect the pressure difference on both sides of the electrostatic filter to detect the filtration effect of the electrostatic filter.

[0028] A wind speed sensor is installed between the flow equalization plate 4 and the filter to detect wind speed. It works in conjunction with the control processor in the prior art to detect the filtration efficiency at different wind speeds by adjusting the wind speed (the wind speed sensor sends a signal to the control processor, the control processor processes the signal to obtain the current wind speed, and then the filtration performance is tested at the current wind speed to obtain the filtration efficiency at the current wind speed).

[0029] In use, the media filter and electrostatic filter are installed in the filter mounting section 5 and the electrostatic precipitator mounting section 6, respectively. Dust from the dust feeder 24 is fed into the air duct 3 through the air inlet 23. The fan draws air, causing the dust to pass through the flow equalization plate 4, achieving a uniform airflow. The dust then passes through the media filter and electrostatic filter and is discharged from the air outlet. The particulate matter sensor 25, the first differential pressure sensor 26, and the second differential pressure sensor 27 are used to calculate the air resistance and purification efficiency of the media filter and electrostatic filter, thus detecting their filtration effect. After the test is completed, water is pumped into the water distributor 8 through the water pumping assembly, and the water is sprayed out through the nozzles 9 on both sides, simultaneously cleaning the media filter and electrostatic filter on both sides. Compared with the prior art, this device has a simple structure, integrates detection and cleaning functions, is convenient to test, and is easy to operate. It solves the problems of high cost of test benches, difficulty in detecting the filter efficiency decay rate after cleaning, and difficulty in operation in the prior art.

[0030] The media filter and the electrostatic filter can be installed onto the filter element mounting part 5 and the electrostatic precipitator mounting part 6 respectively by bolts.

[0031] Furthermore, the cleaning assembly includes a lifting drive assembly installed inside the second housing 2 and a water distributor 8 installed at the drive end of the lifting drive assembly. The lifting drive assembly is located between the filter mounting part 5 and the electrostatic precipitator mounting part 6. Several nozzles 9 are installed on both sides of the water distributor 8, respectively facing the media filter and the electrostatic filter. A water pumping assembly is provided on one side of the second housing 2. A connecting pipe 10 is installed at the output end of the water pumping assembly, and the other end of the connecting pipe 10 is connected to the water distributor 8. The lifting drive assembly includes a connecting plate 11 disposed between the filter mounting part 5 and the electrostatic precipitator mounting part 6, a screw drive device 12 fixedly installed on the top of one side of the connecting plate 11, a screw 13 installed at the drive end of the screw drive device 12 via a coupling, and a slider 14 spirally connected to the outside of the screw 13. The water distributor 8 is disposed on one side of the slider 14, and one side of the slider 14 movably abuts against the connecting plate 11. The water pumping assembly includes a water storage tank 1. 5. A water pump 16 is installed on one side of the water storage tank 15. The output end of the water pump 16 is connected to the connecting pipe 10. A regulating valve 17, a pressure gauge 18, and a flow meter 19 are installed sequentially on the inlet pipe. The water pump 16 allows water to enter the water distributor 8 through the connecting pipe 10 and then spray it out through the nozzles 9 on both sides, simultaneously cleaning the media filter and electrostatic filter installed on both sides, increasing cleaning efficiency. A screw drive device 12 drives the screw 13 to rotate, and the rotation of the screw 13 drives the slider 14 to move up and down, thereby moving the water distributor 8 up and down and moving the nozzles 9 to different positions to clean different positions of the media filter and electrostatic filter. The regulating valve 17 can regulate the water flow rate. The pressure gauge 18 can provide real-time pressure readings to help operators understand the current pressure status of the connecting pipe 10. The flow meter 19 can detect the rate of water flow in the connecting pipe 10.

[0032] Furthermore, an electric water curtain 22 is installed at the top of the inner cavity of the second housing 2. The electric water curtain 22 is located between the cleaning component and the fan mounting part 7. When the nozzle 9 cleans the media filter and the electrostatic filter, the electric water curtain 22 can be released to isolate the electrostatic filter and the fan mounting part 7, preventing water from splashing onto the fan.

[0033] The electric water curtain 22 includes a roller and a motor. The roller is rotatably installed inside the second housing 2, and the motor is installed on one side of the second housing 2. The drive end of the motor is connected to the roller through a coupling. The electric water curtain 22 is wound around the outer circumference of the roller. The electric water curtain 22 is automatically wound and unwound by rotating the motor.

[0034] Furthermore, a water storage tank 20 is provided at the bottom of the second housing 2, and a water outlet 21 is provided on one side of the water storage tank 20. After the water sprayed by the nozzle 9 cleans the two filters, the sewage flows into the water storage tank 20 at the bottom of the second housing 2. The sewage can be discharged into the sewer through the water outlet 21 connected to the pipe 10.

[0035] Furthermore, an air inlet 23 is provided at the top of the first housing 1, and a dust feeder 24 is installed on one side of the air inlet 23.

[0036] The testing process in this embodiment is as follows:

[0037] When the test begins, the wind speed is first adjusted to the set value by the variable frequency fan (the wind speed sensor is located between the flow equalization plate 4 and the filter). After the wind speed is uniform, the dust is generated by the dust feeder (standard test dust). The dust generation port is close to the air inlet 23 and the dust is generated from above.

[0038] After passing through a long duct and the flow equalization plate 4, the dust reaches a uniform state and then passes through the filter. The air resistance and purification efficiency can be calculated by using the particulate matter sensor 25 and the differential pressure sensor before and after the filter. (The test method refers to GB / T 14295-2019 "Air Filters").

[0039] When the purification efficiency decreases or the pressure increases to a certain extent, the self-cleaning system is activated, and the roller shutter door after the filter opens to prevent water from splashing onto other functional sections.

[0040] The self-cleaning screw 13 drives the water distributor 8 to move up and down. The water distributor 8 has nozzles 9 that spray high-pressure water forward and backward to rinse the filter. The rinsed wastewater flows into the bottom tank along the filter. The cleaning water volume and water pressure are displayed on the instrument on the inlet pipe.

[0041] The particulate matter sensor 25 and the differential pressure sensor are both existing technologies and will not be described in detail here.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A self-cleaning filter testing device, comprising a first chamber (1) and a second chamber (2), characterized in that: The first housing (1) has an air duct (3) inside. The second housing (2) has a flow equalization plate (4) and a filter installation part (5) arranged from left to right. A fan installation part (7) is installed on one side of the second housing (2). A cleaning component is also provided in the second housing (2) for cleaning the filter.

2. The self-cleaning filter testing device according to claim 1, characterized in that: The second housing (2) is also equipped with an electrostatic precipitator installation part (6).

3. The self-cleaning filter testing device according to claim 2, characterized in that: The cleaning assembly includes a lifting drive assembly installed in the second housing (2) and a water distributor (8) installed at the drive end of the lifting drive assembly. The lifting drive assembly is located between the filter installation part (5) and the electrostatic precipitator installation part (6). Several nozzles (9) are installed on both sides of the water distributor (8). A water pumping assembly is provided on one side of the second housing (2). A connecting pipe (10) is installed at the output end of the water pumping assembly. The other end of the connecting pipe (10) is connected to the water distributor (8).

4. The self-cleaning filter testing device according to claim 3, characterized in that: An electric water curtain (22) is installed at the top of the inner cavity of the second housing (2), and the electric water curtain (22) is located between the cleaning assembly and the fan installation part (7).

5. The self-cleaning filter testing device according to claim 3, characterized in that: The lifting drive assembly includes a connecting plate (11) disposed between the filter mounting part (5) and the electrostatic precipitator mounting part (6), a screw drive device (12) fixedly mounted on the top of one side of the connecting plate (11), a screw (13) disposed at the driving end of the screw drive device (12), and a slider (14) spirally connected to the outside of the screw. The water distributor (8) is disposed on one side of the slider (14), and one side of the slider is in contact with the connecting plate.

6. The self-cleaning filter testing device according to claim 3, characterized in that: The pumping assembly includes a water storage tank (15), and a water pump (16) is provided on one side of the water storage tank (15). The output end of the water pump (16) is connected to a connecting pipe (10), and a regulating valve (17), a pressure gauge (18), and a flow meter (19) are installed on the connecting pipe in sequence.

7. The self-cleaning filter testing device according to claim 1, characterized in that: The bottom of the second box (2) is provided with a water storage tank (20), and a water outlet (21) is provided on one side of the water storage tank (20).

8. The self-cleaning filter testing device according to claim 1, characterized in that: The top of the first box (1) is provided with an air inlet (23), and a dust feeder (24) is installed on one side of the air inlet (23).

9. The self-cleaning filter testing device according to claim 1, characterized in that: Two particulate matter sensors (25) are installed on the inner wall of the inner cavity of the second housing (2). The two particulate matter sensors (25) are located on both sides of the filter element mounting part (5). A first differential pressure sensor (26) and a second differential pressure sensor (27) are installed on the inner wall of the inner cavity of the second housing (2). The two ends of the first differential pressure sensor (26) are located on both sides of the filter element mounting part (5), and the two ends of the second differential pressure sensor (27) are located on both sides of the electrostatic precipitator mounting part (6).

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