Filtering efficiency and resistance detector

Abstract

A filtering efficiency and resistance detector disclosed by the present invention comprises an installation box, a testing mechanism is installed on the installation box, and the testing mechanism comprises a counter, a particle dust generator, a proportional valve, a first sampler, a second sampler, a flow controller, an air pump, a dilution assembly and a clamping assembly. The problems that the accuracy of the test result of the filter paper filtering efficiency and filtering resistance of a test device on the market at present is low, and if the concentration of dust particles in the test process is high, the reading of a counter cannot be displayed, so that the concentration of the dust particles in the test process needs to be controlled; however, manual reduction of the number of dust particles is easy to cause deviation of a test result, and meanwhile, the working efficiency of a factory is also reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of filtration detection, and particularly relates to a filtration efficiency and resistance detector. Background Art

[0002] High-efficiency filters are used to filter dust particles in the air, thereby improving and enhancing the air quality of the working environment. Therefore, they are widely applied in fields such as semiconductors, precision electronics, pharmaceuticals, medical treatment, food, military machinery, metallurgy, light industry, printing and dyeing, and coating. The filter paper in the filter determines the filtration performance of the filter, so it is necessary to test the filtration efficiency and filtration resistance of the filter paper.

[0003] However, the accuracy of the test results of the filtration efficiency and filtration resistance of filter paper by the current test devices on the market is relatively low. Moreover, if the concentration of dust particles is relatively high during the test, the reading of the counter will not be displayed. This requires controlling the concentration of dust particles during the test. However, artificially reducing the number of dust particles easily causes deviation in the test results and also reduces the working efficiency of the factory. Summary of the Invention

[0004] The present application provides a filtration efficiency and resistance detector to solve the problems mentioned in the above background art.

[0005] In the present application, a filtration efficiency and resistance detector is provided, including an installation box. It is characterized in that a test mechanism is installed on the installation box. The test mechanism includes a counter, a particle dust generator, a proportional valve, a sampler one, a sampler two, a flow controller, an air pump, a dilution component, and a clamping component. The counter is installed on the installation box. A clamping component is arranged on one side of the counter and is installed on the installation box. The dilution component is installed on the installation box. The proportional valve is installed inside the installation box. A particle dust generator is arranged below the proportional valve and is installed inside the installation box. One end of the particle dust generator is provided with an air pump, and the air pump is installed inside the installation box. A flow controller is arranged on one side of the air pump and is installed inside the installation box. A sampler one is installed inside the installation box. A sampler two is arranged on one side of the sampler one and is installed inside the installation box. A dilution component is installed at the front end of the installation box. All components of the test mechanism are connected through connecting pipes.

[0006] Further, the particle dust generator is divided into a containing bottle and an installation table. A sealing cover is fixedly connected inside the installation table. A hose is fixedly connected to the top of the sealing cover. The containing bottle is detachably connected below the sealing cover. A sealing valve is fixedly connected to the containing bottle.

[0007] Further, the containing bottle can be divided into an aerosol containing bottle and a sodium chloride containing bottle.

[0008] Further, a heater is provided between the particulate dust generator and the proportional valve, and the heater is fixedly connected to the installation box. The proportional valve is connected to the heater through a connecting pipe, and the particulate dust generator is connected to the heater through a connecting pipe.

[0009] Further, the clamping assembly includes a support table, an upper cylinder body, a lower cylinder body, and a cylinder. The support table is fixedly connected to the upper surface of the installation box. The cylinder is installed inside the support table. The output shaft of the cylinder is fixedly connected to the upper cylinder body, and the upper cylinder body is located outside the support table. A lower cylinder body is provided below the upper cylinder body, and the lower cylinder body is fixedly connected to the support table.

[0010] Further, a sealing ring is fixedly connected to the upper cylinder body.

[0011] Further, the dilution assembly includes a first diluter, a second diluter, a third diluter, a first pipe, a second pipe, a third pipe, a fourth pipe, a first solenoid valve, and a second solenoid valve. The right end of the first diluter is connected to the second solenoid valve through a connecting pipe. The second solenoid valve is fixedly connected to the installation box. The left end of the first diluter is connected to the right end of the first pipe through a connecting pipe. The left end of the first pipe is connected to the first solenoid valve through a connecting pipe. The left end of the first pipe is connected to the right end of the second diluter through a connecting pipe. The left end of the second diluter is connected to the right end of the second pipe through a connecting pipe. The left end of the second pipe is connected to the first solenoid valve through a connecting pipe. The left end of the second pipe is connected to the right end of the third diluter through a connecting pipe. The left end of the third diluter is connected to the right end of the third pipe through a connecting pipe. The left end of the third pipe is connected to the first solenoid valve through a connecting pipe. The right end of the fourth pipe is connected to the first solenoid valve through a connecting pipe. The left end of the fourth pipe is connected to the counter through a connecting pipe. The counter is connected to the second solenoid valve through a connecting pipe. The first sampler is connected to the second solenoid valve through a connecting pipe.

[0012] In summary, in the present application, a filter efficiency and resistance detector has the beneficial effects of simple operation, high accuracy in testing filter paper, and no need for manual control of the dust particle concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a perspective view of the invention; Figure 2 is a front view of the invention; Figure 3 is Figure 2 a cross-sectional view taken along AA in ; Figure 4 is Figure 2 a cross-sectional view taken along BB in ; Figure 5 is Figure 4 the partial enlarged view of part C in Figure 6 the flow chart of the dilution component.

[0014] Reference numerals: 1, installation box; 2, testing mechanism; 201, counter; 202, particle dust generator; 203, proportional valve; 204, sampler one; 205, sampler two; 206, flow controller; 207, air pump; 208, dilution component; 209, clamping device; 3, sealing cover; 4, hose; 5, receiving bottle; 6, sealing valve; 7, heater; 2091, support table; 2092, upper cylinder body; 2093, lower cylinder body; 2094, cylinder; 8, sealing ring; 2081, first diluter; 2082, second diluter; 2083, pipeline one; 2084, pipeline two; 2085, pipeline three; 2086, pipeline four; 2087, solenoid valve one; 2088, solenoid valve two. Specific embodiments

[0015] The following description is only the preferred embodiment of the present invention, and the scope of protection is not limited to this embodiment. All technical solutions within the idea of the present invention should fall within the scope of protection of the present invention. At the same time, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the scope of protection of the present invention.

[0016] such as Figures 1 to 5As shown in the figure, a filter efficiency and resistance detector includes an installation box 1, on which a test device is installed. The test device includes a counter 201, a particle dust generator 202, a proportional valve 203, a sampler one 204, a sampler two 205, a flow controller 206, an air pump 207, a dilution component 208 and a clamping component. The counter 201 is installed on the installation box 1. A clamping component is arranged beside the counter 201 and is installed on the installation box 1. The clamping component is used to clamp the filter paper material. The particle dust generator 202 is installed at the bottom inside the installation box 1 and is used to generate particulate matter for testing. A proportional valve 203 is arranged above the particle dust generator 202, and the proportional valve 203 is connected to the particle dust generator through a connecting pipe. An air pump 207 is arranged at the left end of the particle dust generator 202, and the air pump 207 is installed at the bottom inside the installation box 1. The proportional valve 203 is connected to the air pump 207 through a connecting pipe. The proportional valve 203 is used to control the flow rate of the particle dust generator 202. The greater the flow rate, the more particles are generated, and the smaller the flow rate, the fewer particles are generated. A flow controller 206 is arranged on one side of the air pump 207, and the air pump 207 is connected to the flow controller 206 through a connecting pipe. The flow controller 206 is connected to the clamping component through a connecting pipe. The flow controller 206 is used to control the flow rate inside the clamping component. The dilution component 208 is installed on the installation box 1. A sampler one 204 is fixedly connected to the top inside the installation box 1. The sampler one 204 is connected to the dilution component 208 through a connecting pipe and is connected to the clamping component through a connecting pipe. A sampler two 205 is arranged on one side of the sampler one 204, and the sampler two 205 is fixedly connected to the top inside the installation box 1. The sampler two 205 is connected to the counter 201 through a connecting pipe. The dilution component 208 is connected to the technology through a connecting pipe. When testing is required, the filter paper is placed inside the clamping component. The particulate dust is sent into the clamping device 209 through the particle dust generator 202, and the flow controller 206 is used to control the flow rate inside the clamping device 209. The sampler one 204 samples the part that has not been filtered. However, since the concentration of this part is too high, it needs to be diluted by the dilution component 208 and then sent to the counter 201 for reading. The sampler two 205 samples the part after the filter paper is diluted, so it can be directly sent into the counter 201 without being diluted by the dilution component 208. In this way, the accuracy of the filter paper test can be greatly increased.

[0017] The particle dust generator 202 is divided into a receiving bottle 5 and an installation platform. A sealing cover 3 is fixedly connected inside the installation platform. A hose 4 is fixedly connected to the top of the sealing cover 3. A receiving bottle 5 is arranged below the sealing cover 3. The receiving bottle 5 is detachably connected to the sealing cover 3. A thread is provided at the mating part of the receiving bottle 5 and the sealing cover 3. The receiving bottle 5 can be removed by rotating the receiving bottle 5. A sealing valve 6 is fixedly connected to the receiving bottle 5. The connecting pipe on the proportional valve 203 extends into the receiving bottle 5 from the sealing valve 6. The sealing valve 6 is used to ensure the sealing performance of the connection. The receiving bottle 5 can be divided into an aerosol receiving bottle 5 and a sodium chloride receiving bottle 5. Since the filter paper has different requirements for dust particles in terms of filtration efficiency and filtration resistance, the gas generated by the air pump 207 enters the receiving bottle 5 in a certain proportion under the control of the proportional valve 203, causing atomization in the bottle to form dust particles and then flowing out from the hose 4. The sodium chloride receiving bottle 5 is used when testing the filtration efficiency of the filter paper, and the aerosol receiving bottle 5 is used when testing the resistance of the filter paper.

[0018] Further, a heater 7 is arranged between the proportional valve 203 and the particle dust generator 202. The heater 7 is fixedly connected to the installation box 1. The heater 7 is connected to the hose 4 at the top of the sealing cover 3 through a connecting pipe, and the heater 7 is connected to the clamping device 209 through a connecting pipe. When using the sodium chloride receiving bottle 5 for dust generation, the generated dust particles are likely to carry moisture, which can easily have a certain impact on the test results. The heater 7 can dry the dust particles with moisture.

[0019] The clamping device 209 includes a support platform 2091, an upper cylinder body 2092, a lower cylinder body 2093, and a cylinder 2094. The support platform 2091 is installed on the installation box 1. A cylinder 2094 is fixedly connected inside the support platform 2091. The output shaft of the cylinder 2094 is fixedly connected to the upper cylinder body 2092, and the upper cylinder body 2092 is located outside the support platform 2091. A lower cylinder body 2093 is arranged below the upper cylinder body 2092, and the upper cylinder body 2092 and the lower cylinder body 2093 are on the same vertical line. A sealing ring 8 is fixedly connected to the upper cylinder body 2092. The upper cylinder body 2092 is connected to the heater 7 through a connecting pipe, the upper cylinder body 2092 is connected to the sampler 1 204 through a connecting pipe, and the upper cylinder body 2092 is connected to the flow controller 206 through a connecting pipe. The lower cylinder body 2093 is connected to the sampler 2 205 through a connecting pipe. The filter paper to be tested is placed on the lower cylinder body 2093. The cylinder 2094 pushes the upper cylinder body 2092 to fit with the lower cylinder body 2093. At the same time, the sealant is clamped into the lower cylinder body 2093 to ensure the sealing performance between the upper and lower cylinder bodies, and at the same time clamp the filter paper. The dust particles of the particle dust generator 202 enter the upper cylinder body 2092 through the connecting pipe, and the airflow generated by the air pump 207 enters the upper cylinder body 2092 through the connecting pipe after being controlled by the flow controller 206.

[0020] AsFigure 1 and Figure 6As shown, the dilution assembly 208 includes a first diluter 2081, a second diluter 2082, a third diluter, a first pipe 2083, a second pipe 2084, a third pipe 2085, a fourth pipe 2086, a first solenoid valve 2087, and a second solenoid valve 2088. The first diluter 2081 is fixedly connected to the mounting box 1. The first solenoid valve 2087 is fixedly connected inside the mounting box 1. A sampler 204 and the first solenoid valve 2087 are connected by a connecting pipe. The first solenoid valve 2087 and the right end of the first diluter 2081 are connected by a connecting pipe. The left end of the first diluter 2081 and the right end of the first pipe 2083 are connected by a connecting pipe. The left end of the first pipe 2083 and the first solenoid valve 2088 are connected by a connecting pipe. The left end of the first pipe 2083 and the right end of the second diluter 2082 are connected by a pipe. The left end of the second diluter 2082 and the right end of the second pipe 2084 are connected by a connecting pipe. The left end of the second pipe 2084 and the first solenoid valve 2088 are connected by a connecting pipe. The left end of the second pipe 2084 and the right end of the third diluter are connected by a connecting pipe. The left end of the third pipe 2085 and the first solenoid valve 2088 are connected by a connecting pipe. The right end of the fourth pipe 2086 and the first solenoid valve 2088 are connected by a connecting pipe. The left end of the fourth pipe 2086 and the counter 201 are connected by a connecting pipe. The counter 201 and the first solenoid valve 2087 are connected by a connecting pipe. Since there is a certain upper limit to the counting range of the counter 201, when the measured particle concentration is too high, a diluter is needed to dilute it, and then the final count is multiplied by the multiple of the diluter to obtain the result. Moreover, the dilution capabilities of the first diluter 2081 and the second diluter 2082 differ by 100 times, and the dilution capabilities of the second diluter 2082 and the third diluter differ by 100 times. The sampler 204 samples the inside of the upper cylinder 2092, and then enters the counter 201 through the first solenoid valve 2087. At this time, the connecting pipe between the first diluter 2081 and the first solenoid valve 2087 will be cut off by the first solenoid valve 2087. When the counter 201 detects that the concentration is too high, it will send the sampled part into the pipeline of the first diluter 2081. After being diluted by the first diluter 2081, it enters the first solenoid valve 2088 through the first pipe 2083. At this time, the connecting pipes between the second pipe 2084 and the third pipe 2085 and the first solenoid valve 2088 will be cut off by the first solenoid valve 2088 to prevent the sampled part from flowing turbulently. The first solenoid valve 2088 sends the sampled part into the fourth pipe 2086 and then enters the counter 201 through the fourth pipe 2086. If the count can display the technique, there is no need to dilute it through the second diluter 2082 anymore. If the concentration is already too high, it is sent back into the first solenoid valve 2087 by the counter 201. However, when passing through the first diluter 2081 this time, the first diluter 2081 will not dilute it again, but will dilute it when the sampled part passes through the second diluter 2082, and so on until the counter 201 can normally display the value.While the sampler two 205 extracts the content from inside the lower cylinder block 2093, and the concentration inside the lower cylinder block 2093 will be very low after being filtered by the filter paper, so the part sampled by the sampler two 205 does not need to be sent into the dilution component 208 and can be directly sent into the counter 201 for reading.

Claims

1. A filtration efficiency and resistance tester, comprising a mounting box (1), characterized in that: The installation box (1) is provided with a test mechanism (2), the test mechanism (2) comprising a counter (201), a particle dust generator (202), a proportional valve (203), a sampler 1 (204), a sampler 2 (205), a flow controller (206), an air pump (207), a dilution component (208) and a clamping component. The counter (201) is installed on the installation box (1), a clamping component is arranged on one side of the counter (201), and the clamping component is installed on the installation box (1), the dilution component (208) is installed on the installation box (1), the proportional valve (203) is installed in the installation box (1), and a particle dust generator (202) is arranged below the proportional valve (203). 202), and the particle emitter is installed in an installation box (1), an air pump (207) is provided at one end of the particle emitter (202), and the air pump (207) is installed in the installation box (1), a flow controller (206) is provided on one side of the air pump (207), and the flow controller (206) is installed in the installation box (1), a sampler 1 (204) is installed in the installation box (1), a sampler 2 (205) is provided on one side of the sampler 1 (204), and the sampler 2 (205) is installed in the installation box (1), a dilution component (208) is installed at the front end of the installation box (1), and the various components of the test mechanism (2) are connected by connecting pipes.

2. A filtration efficiency and resistance detector according to claim 1, characterized in that: The particle dust generator (202) is divided into a containing bottle (5) and a mounting platform, a sealing cover (3) is fixedly connected inside the mounting platform, a hose (4) is fixedly connected to the top of the sealing cover (3), a containing bottle (5) is detachably connected below the sealing cover (3), and a sealing valve (6) is fixedly connected to the containing bottle (5).

3. A filtration efficiency and resistance detector according to claim 2, characterized in that: The containing bottle (5) can be divided into an aerosol containing bottle (5) and a sodium chloride containing bottle (5).

4. A filtration efficiency and resistance detector according to claim 3, characterized in that: A heater (7) is provided between the particle dust generator (202) and the proportional valve (203), and the heater (7) is fixedly connected to the installation box (1); the proportional valve (203) and the heater (7) are connected via a connecting pipe; and the particle dust generator (202) and the heater (7) are connected via a connecting pipe.

5. A filtration efficiency and resistance detector according to claim 4, characterized in that: The clamping assembly comprises a support platform (2091), an upper cylinder body (2092), a lower cylinder body (2093) and a cylinder (2094); the support platform (2091) is fixedly connected to the upper surface of the installation box (1); the cylinder (2094) is installed inside the support platform (2091); the output shaft of the cylinder (2094) is fixedly connected to the upper cylinder body (2092), and the upper cylinder body (2092) is located outside the support platform (2091); a lower cylinder body (2093) is arranged below the upper cylinder body (2092), and the lower cylinder body (2093) is fixedly connected to the support platform (2091).

6. A filtration efficiency and resistance detector according to claim 5, characterized in that: A sealing ring (8) is fixedly connected to the upper cylinder body (2092).

7. A filtration efficiency and resistance detector according to claim 1, characterized in that: The dilution assembly (208) comprises a first diluter (2081), a second diluter (2082), a third diluter, a pipe 1 (2083), a pipe 2 (2084), a pipe 3 (2085), a pipe 4 (2086), a solenoid valve 1 (2087) and a solenoid valve 2 (2088); the right end of the first diluter (2081) is connected to the solenoid valve 2 (2088) via a connecting pipe; the solenoid valve 2 is fixedly connected to the installation box (1); the left end of the first diluter (2081) is connected to the right end of the pipe 1 (2083) via a connecting pipe; the left end of the pipe 1 (2083) is connected to the solenoid valve 1 (2087) via a connecting pipe; the left end of the pipe 1 (2083) is connected to the right end of the second diluter (2082) via a connecting pipe; the left end of the second diluter (2082) is connected to the pipe 2 The right end of the second pipe (2084) is connected by a connecting pipe, the left end of the second pipe (2084) is connected to the electromagnetic valve one (2087) by a connecting pipe, the left end of the second pipe (2084) is connected to the right end of the third diluter by a connecting pipe, the left end of the third diluter is connected to the right end of the third pipe (2085) by a connecting pipe, the left end of the third pipe (2085) is connected to the electromagnetic valve one (2087) by a connecting pipe, the right end of the fourth pipe (2086) is connected to the electromagnetic valve one (2087) by a connecting pipe, the left end of the fourth pipe (2086) is connected to the counter (201) by a connecting pipe, the counter (201) is connected to the second electromagnetic valve (2088) by a connecting pipe, and the sampler one (204) is connected to the second electromagnetic valve (2088) by a connecting pipe.

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