CN109238939B - Integral dustproof performance testing device for canister - Google Patents
Integral dustproof performance testing device for canister Download PDFInfo
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- CN109238939B CN109238939B CN201811145628.5A CN201811145628A CN109238939B CN 109238939 B CN109238939 B CN 109238939B CN 201811145628 A CN201811145628 A CN 201811145628A CN 109238939 B CN109238939 B CN 109238939B
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- canister
- box body
- side wall
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/084—Testing filters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/0866—Sorption
Abstract
The invention provides a device for testing the integral dustproof performance of a canister, which comprises a testing box body and two box doors hinged to the front side wall of the testing box body through hinges, wherein the inner top wall of the testing box body is fixedly connected with a hydraulic cylinder, the output end of the hydraulic cylinder is connected with a fixing device, the fixing device is in through connection with the output end of a simulated breathing device through a connecting hose, and the simulated breathing device is fixedly inserted on the top wall of the testing box body. The invention overcomes the defects of the prior art, has reasonable design and compact structure, can measure the dustproof performance of the canister by sealing the inlet and the outlet of the canister, inputting airflow according to the characteristic of simulating human breath in a targeted manner, counting the air supplement quantity in unit time through the air mass flow, and comparing the air supplement quantity with a standard range colorimetric plate through the filter paper, and effectively solves the problems of simple dustproof performance test structure and unsatisfactory test result.
Description
Technical Field
The invention relates to the technical field of fire-fighting test equipment, in particular to a device for testing the integral dustproof performance of a canister.
Background
The canister is a device for removing dust and toxic and harmful substances in the air through physical adsorption and chemical reaction and providing people with breath. Often the canister is used in conjunction with a gas mask. The canister is an important epidemic prevention and protection article in social life, and especially plays an important role in the epidemic of disasters such as earthquakes, floods, infectious diseases (such as SARS) and the like.
Since the canister is usually used in combination with a gas mask, the quality of the canister is mainly determined by the filtration and adsorption functions of the canister, and the canister body of the canister must be kept good in dust resistance, so that the dust resistance of the canister is especially important to detect.
The patent of grant bulletin number CN101587028B has announced a canister dustproof performance test device, and it includes air supply, air gas flow control system, canister mounting fixture and time-recorder, its characterized in that: the air flow control system is directly connected with the built-in air source, the air flow is adjusted and then connected with a respirator system, the device has the advantages of simplicity, reliability and air flow adjustment, but the device cannot effectively and pertinently imitate the characteristics of human breathing to input air flow during testing, so that the testing result is not ideal, and therefore, the device for testing the integral dustproof performance of the canister is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a device for testing the integral dustproof performance of a canister, which overcomes the defects of the prior art, has reasonable design and compact structure, can test the dustproof performance of the canister by sealing the inlet and outlet of the canister, inputting airflow by specifically simulating the characteristics of human breathing, counting the air supplement amount in unit time through the mass flow of air, and finally comparing the air supplement amount with a standard range colorimetric plate through filter paper, and effectively solves the problems of simple structure and unsatisfactory test result of the dustproof performance test.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a device for testing the integral dustproof performance of a canister comprises a test box body and two box doors hinged with the front side wall of the test box body through hinges, wherein a hydraulic cylinder is fixedly connected to the inner top wall of the test box body, the output end of the hydraulic cylinder is connected with a fixing device, the fixing device is connected with the output end of a simulated breathing device through a connecting hose in a penetrating manner, the simulated breathing device is fixedly inserted on the top wall of the test box body, a canister body is arranged below the fixing device, the lower end of the canister body is placed in a placing groove formed in the upper end of a base, the lower end of the base is fixedly connected with the inner bottom wall of the test box body, an L-shaped through hole penetrating through the side wall of the base is formed in the inner bottom wall of the placing groove, a second exhaust pipe is connected with a transverse section of the L-shaped through hole in a penetrating, the output end of the testing device is connected with a first exhaust pipe in a penetrating way, and the other end of the first exhaust pipe penetrates through the side wall of the testing box body and reaches the outer cavity of the testing box body;
the testing device comprises a testing box, the input end of the testing box is in through connection with a second exhaust pipe, the output end of the testing box is in through connection with a first exhaust pipe, the upper end of the testing box is in through connection with a rectangular frame, a rubber plug is inserted into the inner side wall of the rectangular frame in a sliding mode, the lower end of the rubber plug is fixedly connected with a test paper mounting frame, and filter paper is detachably and fixedly installed on the inner side wall of the test paper mounting frame;
the simulated breathing device comprises a sleeve which is fixedly inserted on the top wall of the test box body, a plurality of air inlets are arranged on the top wall of the sleeve, the inner side wall of the sleeve is connected with a rubber bowl in a sliding way, and the upper end of the rubber bowl is vertically connected with a push-pull rod, the upper end of the push-pull rod reaches the outer cavity of the sleeve and is vertically connected with a cross rod, and the side wall of the cross bar is provided with a strip-shaped through hole, a slide block is connected in the strip-shaped through hole in a sliding way, the rear end of the slide block is fixedly connected with the edge of the front side wall of the circular turntable, the middle part of the rear side wall of the circular turntable is connected with a driving shaft on a servo motor, the servo motor is fixedly connected with the upper end of the sleeve through a bracket, the lower end of the sleeve reaches the inner cavity of the test box body and is connected with a one-way valve in a penetrating way, and the output end of the one-way valve is communicated with the input end of the connecting hose, and the connecting hose is provided with a gas flowmeter.
Preferably, the fixing device comprises a lower pressing plate, the upper end of the lower pressing plate is connected with the output end of the hydraulic cylinder, a metal pipe is inserted in the middle of the lower pressing plate in a sliding mode, the upper end of the metal pipe is connected with the input end of the connecting hose in a penetrating mode, the lower end of the metal pipe is connected with the upper fixing seat in a penetrating mode, the upper end of the upper fixing seat is connected with the lower end of the lower pressing plate through a plurality of supporting springs, a first copper contact piece is attached to the upper end of the upper fixing seat, and a second copper contact piece matched with the first copper contact piece is attached to the lower end of the lower pressing plate.
Preferably, the lower end of the upper fixing seat is fixedly connected with a rubber pad matched with the upper end of the canister body.
Preferably, a slide rheostat is fixedly mounted on the side wall of the test box body.
Preferably, the side wall of the canister body is sleeved with a rubber ring, and the lower end of the rubber ring is fixedly connected with the upper end of the base.
Preferably, the upper end of the base is connected with the lower end of the lower pressing plate through two symmetrically arranged telescopic rods.
Preferably, the lower end of the test box body is fixedly connected with four supporting legs, and the supporting legs are distributed in a matrix.
(III) advantageous effects
The embodiment of the invention provides a device for testing the integral dustproof performance of a canister. The method has the following beneficial effects:
1. through the integrated configuration between fixing device and the base, the effectual exit with the canister body seals up, guarantees the leakproofness of canister body, fully ensures the accuracy of testing result.
2. Through the combined structure of the rubber bowl and the push-pull rod, when the push-pull rod is pulled upwards, the air volume below the rubber bowl is increased, the pressure is reduced, and the air above the rubber bowl is extruded to the lower part from the periphery of the rubber bowl.
3. Through the integrated configuration of rectangle frame and rubber buffer, the effectual inner chamber of impressing the rubber buffer rectangle frame guarantees the sealed of test box, and simultaneously, the elastic construction of rubber buffer can guarantee that the rubber buffer can not be easy the air by the test box and push up, and sealed effect is better.
4. By adding the sliding rheostat and matching with the servo motor, the respiratory frequency of people in different crowds and different environments is effectively simulated, and the accuracy of a detection result is ensured.
5. Through the integrated configuration of check valve and gas flowmeter, after the poison filtering tank body is fixed, the accurate flow that lets in the air of detection of gas flowmeter detects the dustproof effect of the unit air of poison filtering tank body.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an external view of the structure of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a rear view of the structure of the present invention;
FIG. 4 is a schematic view of the fixing device;
FIG. 5 is a schematic view of a simulated breathing apparatus;
FIG. 6 is a schematic structural diagram of a testing apparatus.
In the figure: the device comprises a test box body 1, a box door 2, a hydraulic cylinder 3, a fixing device 4, a lower pressing plate 41, a metal pipe 42, an upper fixed seat 43, a supporting spring 44, a first copper contact piece 45, a second copper contact piece 46, a rubber pad 47, a simulated breathing device 5, a sleeve 51, a rubber bowl 52, a push-pull rod 53, a cross rod 54, a circular turntable 55, a one-way valve 56, a gas flowmeter 57, a slide rheostat 58, a servo motor 59, a connecting hose 6, a canister body 7, a base 8, a testing device 9, a testing box 91, a rectangular frame 92, a rubber plug 93, a test paper mounting frame 94, filter paper 95, a first exhaust pipe 10, a telescopic rod 11 and a rubber ring 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings, the integral dustproof performance testing device of the canister comprises a testing box body 1 and two box doors 2 hinged to the front side wall of the testing box body 1 through hinges, a hydraulic cylinder 3 is fixedly connected to the inner top wall of the testing box body 1, the output end of the hydraulic cylinder 3 is connected with a fixing device 4, the fixing device 4 is connected with the output end of a simulated breathing device 5 through a connecting hose 6 in a penetrating manner, the simulated breathing device 5 is fixedly inserted and connected onto the top wall of the testing box body 1, a canister body 7 is arranged below the fixing device 4, the lower end of the canister body 7 is placed in a placing groove formed in the upper end of a base 8, the lower end of the base 8 is fixedly connected with the inner bottom wall of the testing box body 1, an L-shaped through hole penetrating through the side wall of the base 8 is formed in the inner bottom wall of the placing groove, and a second exhaust pipe is, the other end of the second exhaust pipe is connected with the input end of the testing device 9 in a penetrating manner, the output end of the testing device 9 is connected with the first exhaust pipe 10 in a penetrating manner, and the other end of the first exhaust pipe 10 penetrates through the side wall of the testing box body 1 and reaches the outer cavity of the testing box body 1;
the testing device 9 comprises a testing box 91, the input end of the testing box 91 is in through connection with a second exhaust pipe, the output end of the testing box 91 is in through connection with a first exhaust pipe 10, the upper end of the testing box 91 is in through connection with a rectangular frame 92, a rubber plug 93 is inserted into the inner side wall of the rectangular frame 92 in a sliding mode, the lower end of the rubber plug 93 is fixedly connected with a test paper mounting frame 94, filter paper 95 is fixedly mounted on the inner side wall of the test paper mounting frame 94 in a detachable mode, the rubber plug 93 is effectively pressed into the inner cavity of the rectangular frame 92, sealing of the testing box 91 is guaranteed, meanwhile, due to the elastic structure of the rubber plug 93, the rubber plug 93 cannot be easily pushed open by air in the testing box 91, and the sealing;
the simulated respiration device 5 comprises a sleeve 51, the sleeve 51 is fixedly inserted on the top wall of the test box body 1, a plurality of air inlets are formed in the top wall of the sleeve 51, the inner side wall of the sleeve 51 is connected with a rubber bowl 52 in a sliding manner, the upper end of the rubber bowl 52 is vertically connected with a push-pull rod 53, the upper end of the push-pull rod 53 reaches the outer cavity of the sleeve 51 and is vertically connected with a cross rod 54, the side wall of the cross rod 54 is provided with a strip-shaped through hole, a sliding block is connected in the strip-shaped through hole in a sliding manner, the rear end of the sliding block is fixedly connected with the edge of the front side wall of a circular turntable 55, the middle part of the rear side wall of the circular turntable 55 is connected with a driving shaft of a servo motor 59, the servo motor 59 is fixedly connected with the upper end of the sleeve 51 through a bracket, the lower end, the gas flowmeter 57 is installed on the connecting hose 6, when the push pull rod 53 is pulled upwards, the air volume below the rubber bowl 52 is increased, the pressure intensity is reduced, the air above the rubber bowl 52 is extruded to the lower part from the periphery of the rubber bowl 52, when the push pull rod 53 is pressed downwards, the air volume below the rubber bowl 52 is reduced, the pressure intensity is increased, the rubber bowl 52 is tightly pressed against the wall of the barrel, the air in the sleeve 51 is extruded into the connecting hose 6, the breathing of people is simulated, and the accuracy of the detection structure is ensured.
Fixing device 4 includes holding down plate 41, the upper end of holding down plate 41 is connected with the output of pneumatic cylinder 3, and the middle part of holding down plate 41 slides and pegs graft and have tubular metal resonator 42, tubular metal resonator 42's upper end and the input through connection of coupling hose 6, and tubular metal resonator 42's lower extreme through connection has last fixing base 43, the upper end of going up fixing base 43 is connected with the lower extreme of holding down plate 41 through a plurality of supporting spring 44, and the upper end of going up fixing base 43 pastes and covers and have first copper contact 45, the lower extreme of holding down plate 41 pastes and covers and has second copper contact 46 with first copper contact 45 assorted, and the effectual exit with canister body 7 seals, guarantees the leakproofness of canister body 7, fully ensures the accuracy of testing result.
The lower extreme fixedly connected with of going up fixing base 43 and the upper end assorted rubber pad 47 of canister body 7, the leakproofness of effectual assurance canister body 7 upper end import and export guarantees the accuracy of test result.
The sliding rheostat 58 is fixedly mounted on the side wall of the testing box body 1, and the rotating speed of the servo motor 59 can be adjusted by adjusting the sliding rheostat 58, so that the respiratory frequency of people in different crowds and different environments can be simulated, and the accuracy of a detection result is ensured.
The lateral wall of the canister body 7 is sleeved with a rubber ring 12, and the lower end of the rubber ring 12 is fixedly connected with the upper end of the base 8, so that the sealing performance of the inlet and the outlet at the lower end of the canister body 7 is effectively ensured, and the accuracy of a test result is ensured.
The upper end of the base 8 is connected with the lower end of the lower pressing plate 41 through two symmetrically arranged telescopic rods 11, the descending track of the lower pressing plate 41 is effectively limited, and the upper inlet and the outlet of the upper end of the canister body 7 are accurately sealed by the upper fixing seat 43.
The lower extreme fixedly connected with four supporting legss of test box 1, and a plurality of supporting legss are the matrix and distribute, and effectual support lives test box 1, guarantees testing arrangement's even running.
The hydraulic cylinder 3 and an external power supply jointly form a series circuit through a conducting wire, and the first copper contact piece 45, the second copper contact piece 46, the sliding rheostat 58, the servo motor 59 and the external power supply jointly form a series circuit through a conducting wire.
As shown in fig. 1-6, the working principle of the device for testing the integral dustproof performance of the canister is as follows: after the debugging of workers, the box door 2 is opened, the lower end inlet and outlet of the canister body 7 are placed in the placing groove formed in the upper end of the base 8, then the box door 2 is closed, an external power supply is switched on, the hydraulic cylinder 3 is started, the lower pressing plate 41 is pushed to move downwards, the upper fixing seat 43 is abutted to and covers the upper end inlet and outlet of the canister body 7, the lower pressing plate 41 continues to move downwards, and the upper fixing seat 43 is matched with the base 8 to seal and fix the canister body 7;
at the moment, the first copper contact 45 is abutted to the second copper contact 46, the circuit is communicated, the servo motor 59 is started to drive the circular turntable 55 to rotate, a sliding block fixed on the front side wall of the circular turntable 55 slides in the strip-shaped through hole to push the rubber bowl 52 to slide up and down in the inner cavity of the sleeve 51, when the push-pull rod 53 moves upwards, the air volume below the rubber bowl 52 is increased, the pressure is reduced, and the air above the rubber bowl 52 is extruded to the lower part from the periphery of the rubber bowl 52;
meanwhile, the rotating speed of the servo motor 59 can be adjusted by adjusting the slide rheostat 58, so that the respiratory frequency of people under different crowds and different environments can be simulated, and the accuracy of a detection result is ensured;
then, the air in the connecting hose 6 enters the canister body 7 through the metal tube 42, is filtered and purified by the canister body 7, enters the test box 91 through the L-shaped through hole and the second exhaust pipe, and is discharged through the first exhaust pipe 10 through the filter paper;
and (3) determining accurate unit time, after the time is up, driving the lower pressing plate 41 to be lifted upwards by the hydraulic cylinder 3, pulling the first copper contact piece 45 to be separated from the second copper contact piece 46, closing the servo motor 59, opening the box door 2, pulling down the rubber plug 93, taking out the filter paper 95, comparing the filter paper 95 with a standard range colorimetric board, and measuring the dustproof performance of the canister in unit time.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The utility model provides a whole dustproof capability test device of canister, passes through two chamber doors of hinge joint, its characterized in that including the preceding lateral wall of test box and test box: the inner top wall of the test box body is fixedly connected with a hydraulic cylinder, the output end of the hydraulic cylinder is connected with a fixing device, the fixing device is communicated with the output end of the simulated breathing device through a connecting hose, the simulated breathing device is fixedly inserted on the top wall of the test box body, a canister body is arranged below the fixing device, the lower end of the canister body is arranged in a placing groove arranged at the upper end of the base, the lower end of the base is fixedly connected with the inner bottom wall of the testing box body, the inner bottom wall of the placing groove is provided with an L-shaped through hole which penetrates through the side wall of the base, and a transverse section of the L-shaped through hole is connected with a second exhaust pipe in a penetrating way, the other end of the second exhaust pipe is connected with the input end of the testing device in a penetrating way, the output end of the testing device is connected with a first exhaust pipe in a penetrating way, and the other end of the first exhaust pipe penetrates through the side wall of the testing box body and reaches the outer cavity of the testing box body;
the testing device comprises a testing box, the input end of the testing box is in through connection with a second exhaust pipe, the output end of the testing box is in through connection with a first exhaust pipe, the upper end of the testing box is in through connection with a rectangular frame, a rubber plug is inserted into the inner side wall of the rectangular frame in a sliding mode, the lower end of the rubber plug is fixedly connected with a test paper mounting frame, and filter paper is detachably and fixedly installed on the inner side wall of the test paper mounting frame;
the simulated breathing device comprises a sleeve which is fixedly inserted on the top wall of the test box body, a plurality of air inlets are arranged on the top wall of the sleeve, the inner side wall of the sleeve is connected with a rubber bowl in a sliding way, and the upper end of the rubber bowl is vertically connected with a push-pull rod, the upper end of the push-pull rod reaches the outer cavity of the sleeve and is vertically connected with a cross rod, and the side wall of the cross bar is provided with a strip-shaped through hole, a slide block is connected in the strip-shaped through hole in a sliding way, the rear end of the slide block is fixedly connected with the edge of the front side wall of the circular turntable, the middle part of the rear side wall of the circular turntable is connected with a driving shaft on a servo motor, the servo motor is fixedly connected with the upper end of the sleeve through a bracket, the lower end of the sleeve reaches the inner cavity of the test box body and is connected with a one-way valve in a penetrating way, and the output end of the one-way valve is communicated with the input end of the connecting hose, and the connecting hose is provided with a gas flowmeter.
2. The device for testing the integral dustproof performance of the canister as claimed in claim 1, wherein: the fixing device comprises a lower pressing plate, the upper end of the lower pressing plate is connected with the output end of the hydraulic cylinder, a metal pipe is inserted into the middle of the lower pressing plate in a sliding mode, the upper end of the metal pipe is connected with the input end of the connecting hose in a penetrating mode, an upper fixing seat is connected to the lower end of the metal pipe in a penetrating mode, the upper end of the upper fixing seat is connected with the lower end of the lower pressing plate through a plurality of supporting springs, a first copper contact piece is covered on the upper end of the upper fixing seat in a sticking mode, and a second copper contact piece matched with the first copper contact piece is covered on the lower end.
3. The device for testing the integral dustproof performance of the canister as claimed in claim 2, wherein: the lower end of the upper fixing seat is fixedly connected with a rubber pad matched with the upper end of the canister body.
4. The device for testing the integral dustproof performance of the canister as claimed in claim 1, wherein: and a sliding rheostat is fixedly mounted on the side wall of the test box body.
5. The device for testing the integral dustproof performance of the canister as claimed in claim 1, wherein: the lateral wall of the canister body is sleeved with a rubber ring, and the lower end of the rubber ring is fixedly connected with the upper end of the base.
6. The device for testing the integral dustproof performance of the canister as claimed in claim 1, wherein: the upper end of the base is connected with the lower end of the lower pressing plate through two symmetrically arranged telescopic rods.
7. The device for testing the integral dustproof performance of the canister as claimed in claim 1, wherein: the lower extreme fixedly connected with four supporting legss of test box, and a plurality of supporting legss are the matrix and distribute.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811145628.5A CN109238939B (en) | 2018-09-29 | 2018-09-29 | Integral dustproof performance testing device for canister |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811145628.5A CN109238939B (en) | 2018-09-29 | 2018-09-29 | Integral dustproof performance testing device for canister |
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| CN109238939B true CN109238939B (en) | 2020-10-02 |
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| CN113220053B (en) * | 2021-04-30 | 2022-05-06 | 湖北华强科技股份有限公司 | Test device for simulating canister protecting time against steam and using method |
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| CN101587028A (en) * | 2009-06-26 | 2009-11-25 | 上海大学 | Testing device for dustproof property of canister |
| KR20140146860A (en) * | 2013-06-18 | 2014-12-29 | (주)에이치시티 | Mask Filter Test System |
| CN107741392A (en) * | 2017-09-27 | 2018-02-27 | 浙江省纺织测试研究院 | A kind of mouth mask protection effect method for real-timely testing synchronous with load respiratory resistance |
| CN107907469A (en) * | 2017-12-25 | 2018-04-13 | 天津市滨海净化设施有限公司 | A kind of filter detection device |
| CN108287127A (en) * | 2018-01-08 | 2018-07-17 | 佛山市顺德区阿波罗环保器材有限公司 | Air filter testing and analysis system |
| CN207636451U (en) * | 2017-10-30 | 2018-07-20 | 东莞市宏图仪器有限公司 | A kind of protective mask mask comprehensive test machine |
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|---|---|---|---|---|
| CN101587028A (en) * | 2009-06-26 | 2009-11-25 | 上海大学 | Testing device for dustproof property of canister |
| KR20140146860A (en) * | 2013-06-18 | 2014-12-29 | (주)에이치시티 | Mask Filter Test System |
| CN107741392A (en) * | 2017-09-27 | 2018-02-27 | 浙江省纺织测试研究院 | A kind of mouth mask protection effect method for real-timely testing synchronous with load respiratory resistance |
| CN207636451U (en) * | 2017-10-30 | 2018-07-20 | 东莞市宏图仪器有限公司 | A kind of protective mask mask comprehensive test machine |
| CN107907469A (en) * | 2017-12-25 | 2018-04-13 | 天津市滨海净化设施有限公司 | A kind of filter detection device |
| CN108287127A (en) * | 2018-01-08 | 2018-07-17 | 佛山市顺德区阿波罗环保器材有限公司 | Air filter testing and analysis system |
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| CN109238939A (en) | 2019-01-18 |
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