Mask performance detection device
By using a mask performance testing device that simulates mask deformation and environmental changes, the problems of incomplete testing and low efficiency in existing technologies have been solved, enabling more accurate performance evaluation and efficient multi-condition testing.
Patent Information
- Application Number
- CN202520174609.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-26
AI Technical Summary
Existing mask performance testing devices fail to fully simulate the morphological changes of masks under different environments and usage conditions, resulting in inaccurate test results and low testing efficiency.
A mask performance testing device was designed, comprising a simulation unit, a clamping assembly, and a test piece. The clamping assembly simulates the deformation of the mask, while color-changing particles and a hot air blower simulate environmental changes. Combined with a controller to control the test conditions, performance evaluation under multiple conditions can be achieved.
It can more accurately assess the filtration performance of masks under different environments and usage conditions, improving testing efficiency and the comparability of results.
Smart Images
Figure CN223841722U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mask testing, and more specifically, to a mask performance testing device. Background Technology
[0002] A face mask is a hygiene and epidemic prevention product, generally referring to a mask worn over the mouth and nose to filter the air entering the mouth and nose, so as to block harmful gases, odors, droplets, viruses and other substances. It is made of materials such as gauze or paper.
[0003] Publication number CN214703239U discloses a mask protective performance testing device, including an air intake mechanism, a testing mechanism, and a channel mechanism. The air intake mechanism includes an air intake pipe, a flow sensor, and a flow control valve. The flow sensor is installed in the middle of the air intake pipe, and the flow control valve is installed at the right end of the air intake pipe. The testing mechanism is installed to the right of the flow control valve. An internal air intake pipe is installed inside the testing box, and an internal air intake chamber is provided inside the internal air intake pipe. A humanoid model is installed to the right of the internal air intake pipe. The humanoid model has a simulated nose air outlet in the middle and a simulated mouth air outlet below the simulated nose air outlet. The channel mechanism is installed to the right of the testing box. This invention employs a humanoid model with simulated mouth and external vent holes to mimic how a person actually wears a mask. It simultaneously detects environmental factors such as wind and temperature to assess mask performance under different conditions. While the device can simulate human beards and detect the impact of wind and humidity on mask performance, it neglects the effects of mask shape changes. For example, repeated pulling can cause the mask's elasticity to decrease, and factors such as temperature, humidity, and wrinkles can all reduce the mask's fit and seal. Therefore, the test cannot simulate the actual filtration situation of masks in real-world use. Furthermore, the testing method and operation are inconvenient, making it difficult to quickly compare the filtration performance of various samples. Utility Model Content
[0004] To overcome the shortcomings of existing technologies, such as insufficient testing conditions and low testing comparison efficiency, this utility model provides a mask performance testing device, including a simulation part. The front of the simulation part has a placement groove, and the inner wall of the placement groove is provided with a sliding strip. A test piece is slidably connected inside the placement groove. The bottom of the simulation part has a groove. Clamping components are fixedly installed on the top of the simulation part and the inner wall of the groove. A simulated protrusion is fixedly installed on the front of the simulation part, and an air outlet is opened at the bottom of the simulated protrusion. A small hot air blower is fixedly installed on the top of the simulation part.
[0005] Preferably, both clamping components include a fixing plate, the two fixing plates are fixedly connected to the simulation part and the groove respectively, and the two fixing plates are both L-shaped. A small electric push rod is fixedly installed inside the two fixing plates. A bearing seat is fixedly installed at the output end of the two small electric push rods. A spherical shaft is provided inside the two bearing seats. A mask clamp is fixedly installed on the outer wall of the two spherical shafts.
[0006] The clamping component can pull the mask up and down to simulate the changes that occur when wearing a mask during daily use, thereby testing the mask's resistance to wrinkles and its elasticity.
[0007] Preferably, the test piece includes a placement box, which is slidably connected to the inside of the placement groove. The outer wall of the placement box is provided with a slide rail, which is slidably installed outside the slide bar. The top of the placement box is provided with a through groove, and a baffle is inserted into the inside of the through groove. A limit rod is threadedly installed on the side wall of the placement box.
[0008] The test box can hold various particles to simulate the impact of environmental particles on the mask as much as possible. The color-changing test particles can be reused repeatedly, and the filtration effect between different masks can be intuitively compared by the degree and quantity of color change.
[0009] Preferably, there are two placement slots and two placement boxes, and the two placement boxes respectively contain potassium permanganate particles and activated carbon particles for testing.
[0010] Preferably, a ventilation pipe is fixedly installed inside the simulation part, with one end of the ventilation pipe extending into the interior of the simulation protrusion and the other end fixedly connected to the air outlet of a small hot air blower.
[0011] By using a small hot air blower to generate hot gas and deliver it to the mask's surface, the internal and external temperatures are altered, causing changes in humidity and temperature. This also reflects the changes in the mask's shape caused by temperature and humidity.
[0012] Preferably, a rope-hanging ball bar is fixedly installed on both the left and right side walls of the simulation part.
[0013] Preferably, a controller is fixedly mounted on the top of the simulation unit.
[0014] Preferably, both clamping assemblies and the small hot air blower are electrically connected to the controller.
[0015] The controller allows for quick operation of the equipment to stop and start, thus changing test conditions.
[0016] Beneficial effects:
[0017] The beneficial effects of adopting the technical solution of this utility model are as follows:
[0018] (1) The simulated part, groove and simulated protrusion simulate human facial features. At the same time, the inside of the placement box is filled with detection particles that adsorb particulate matter and change color. The mask covers the simulated part to cover the placement box. The blocking performance of the mask is tested by static test or by specifically delivering particulate matter to the mask. The blocking effect of different masks on particulate matter can be judged intuitively by the degree and number of color change of the detection particles.
[0019] (2) By installing two clamping components, the upper and lower edges of the mask are clamped, and the process of putting on and taking off a mask by a small electric push rod can be simulated by the human body. This reflects the anti-wrinkle and elasticity reduction of the mask. At the same time, the small hot air blower, ventilation pipe and simulated bump can simulate the temperature and humidity changes inside and outside the mask caused by human breathing, thereby increasing the comparison conditions and data. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the structure of this utility model;
[0022] Figure 2 This is a bottom view of the groove structure of this utility model;
[0023] Figure 3 This is a schematic diagram of the structure of the placement groove of this utility model;
[0024] Figure 4 This is a utility model Figure 3 Enlarged structural diagram of section A in the middle;
[0025] Figure 5 This is a schematic diagram of the structure of the test piece of this utility model;
[0026] Figure 6 This is a cross-sectional view of the simulation part of this utility model.
[0027] In the diagram: 1. Simulation section; 10. Placement slot; 11. Sliding bar; 12. Hanging rope ball bar; 13. Groove; 2. Test piece; 20. Placement box; 21. Slide rail; 22. Baffle; 23. Limiting rod; 3. Simulation protrusion; 31. Air outlet; 4. Clamping assembly; 40. Fixing plate; 41. Small electric push rod; 42. Bearing seat; 43. Spherical shaft; 44. Mask clamp; 5. Small hot air blower; 6. Ventilation pipe; 7. Controller. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments. The specific embodiments are as follows:
[0030] like Figures 1 to 6 As shown, a mask performance testing device includes a simulation unit 1. A placement groove 10 is formed on the front of the simulation unit 1, and a slide bar 11 is provided on the inner wall of the placement groove 10. A test piece 2 is slidably connected inside the placement groove 10. A groove 13 is formed at the bottom of the simulation unit 1. Clamping components 4 are fixedly installed on the top of the simulation unit 1 and the inner wall of the groove 13. A simulated protrusion 3 is fixedly installed on the front of the simulation unit 1, and an air outlet 31 is formed at the bottom of the simulated protrusion 3. A small hot air blower 5 is fixedly installed on the top of the simulation unit 1. The shape of the simulated protrusion 3 is used to mimic the protrusions of a human face, making the simulation unit 1 fit the facial features more closely when installing a mask. Two clamping components... Each of the two components includes a fixing plate 40, which is fixedly connected to the simulation part 1 and the groove 13 respectively. The two fixing plates 40 are both L-shaped. Small electric push rods 41 are fixedly installed inside the two fixing plates 40. Bearing seats 42 are fixedly installed at the output ends of the two small electric push rods 41. Ball shafts 43 are provided inside the two bearing seats 42. Mask clamps 44 are fixedly installed on the outer walls of the two ball shafts 43. The two clamping components 4 are used to clamp the upper edge and lower edge of the mask respectively. The device simulates the situation of people wearing masks in daily life by electric drive and reflects the changes in the mask's wrinkle resistance, tensile strength and elasticity.
[0031] It should be noted that the spherical shaft 43 can drive the mask clamp 44 to rotate more flexibly, so that the clamping angle can meet the mask's fit requirements. In order to reduce wear on the mask, the outer surface of the simulation part 1 can be made of silicone. The soft silicone material not only reduces wear but also better conforms to the characteristics of human skin.
[0032] Test piece 2 includes a placement box 20, which is slidably connected to the inside of the placement slot 10. A slide rail 21 is provided on the outer wall of the placement box 20, and the slide rail 21 is slidably installed on the outside of the slide bar 11. A through slot is provided on the top of the placement box 20, and a baffle 22 is inserted into the inside of the through slot. A limit rod 23 is threaded onto the side wall of the placement box 20. There are two placement slots 10 and two placement boxes 20, and the two placement boxes 20 respectively contain potassium permanganate granules and activated carbon granules for testing. Potassium permanganate granules have a strong adsorption capacity and can convert harmful substances such as formaldehyde and TVOC into carbon dioxide and water. This conversion process causes the granules to change color, which can be observed... The color change can easily estimate the usage time and filtration effect. The color of activated carbon particles also changes after adsorbing particulate matter. For example, purple activated carbon particles will gradually turn black when adsorbing harmful substances. This color change mechanism is mainly achieved through the combined action of physical adsorption and chemical adsorption. Therefore, the mask can be worn on the front of the simulation unit 1 and the two placement boxes 20 can be covered for natural placement experiments. Alternatively, the simulation unit 1 can be placed in an environment such as a test chamber to accelerate the experimental efficiency. The filtration effect of different masks on particulate matter can be judged by observing the degree of color change of activated carbon particles and potassium permanganate particles. It is also very convenient and efficient to replace the reference object and the experimental object.
[0033] It should be noted that a ventilation pipe 6 is fixedly installed inside the simulation section 1, and one end of the ventilation pipe 6 extends into the interior of the simulation protrusion 3, while the other end is fixedly connected to the air outlet of the small hot air blower 5. The small hot air blower 5 injects hot gas into the interior of the simulation protrusion 3 through the ventilation pipe 6 and discharges it into the area covered by the mask through the air outlet 31, which can simulate the temperature and humidity changes caused by human breathing. Since the objective conditions of the experimental environment need to be considered as optional additional conditions for mask performance testing, hanging rope ball rods 12 are fixedly installed on both the left and right side walls of the simulation section 1. The hanging rope ball rods 12 are used to hook the mask rope to fix the mask to the front of the simulation section 1. A controller 7 is fixedly installed on the top of the simulation section 1. The two clamping components 4 and the small hot air blower 5 are all electrically connected to the controller 7. The controller 7 is used to control the start and stop of the electrically connected equipment.
[0034] Working principle: First, fill the placement box 20 with potassium permanganate granules and activated carbon granules. At the same time, lift the baffle 22 and rotate the limiting rod 23 to stop the bottom of the baffle 22, so that the potassium permanganate granules and activated carbon granules can be naturally ventilated. The mask is fixed to the front of the simulation part 1 and covers the simulation protrusion 3 by the hanging rope ball rod 12. The two clamping components 4 can pull the mask up or down according to the experimental requirements, so as to test the mask's anti-wrinkle and deformation ability. As needed, the small hot air blower 5 can also work with the ventilation pipe 6 to deliver hot gas into the simulation protrusion 3 to simulate the temperature and humidity changes caused by human breathing. The simulation part 1 can be placed in the test environment for natural placement experiments, or the particles can be blown towards the front of the simulation part 1 for targeted experiments.
[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A mask performance testing device, characterized in that, The simulation part (1) includes a placement groove (10) on the front side of the simulation part (1), a slide bar (11) on the inner wall of the placement groove (10), a test piece (2) slidably connected inside the placement groove (10), a groove (13) on the bottom of the simulation part (1), a clamping assembly (4) fixedly installed on the top of the simulation part (1) and the inner wall of the groove (13), a simulation protrusion (3) fixedly installed on the front side of the simulation part (1), an air outlet (31) on the bottom of the simulation protrusion (3), and a small hot air blower (5) fixedly installed on the top of the simulation part (1).
2. The mask performance testing device according to claim 1, characterized in that, Both clamping assemblies (4) include a fixing plate (40), which is fixedly connected to the simulation part (1) and the groove (13) respectively. Both fixing plates (40) are L-shaped. Small electric push rods (41) are fixedly installed inside both fixing plates (40). Bearing seats (42) are fixedly installed at the output ends of both small electric push rods (41). Ball bearings (43) are provided inside both bearing seats (42). Mask clamps (44) are fixedly installed on the outer walls of both ball bearings (43).
3. The mask performance testing device according to claim 2, characterized in that, The test piece (2) includes a placement box (20), which is slidably connected to the inside of the placement groove (10). The outer wall of the placement box (20) is provided with a slide rail (21), and the slide rail (21) is slidably installed on the outside of the slide bar (11). The top of the placement box (20) is provided with a through groove, and a baffle (22) is inserted into the inside of the through groove. A limit rod (23) is threadedly installed on the side wall of the placement box (20).
4. The mask performance testing device according to claim 3, characterized in that, The number of the placement slots (10) and the placement boxes (20) are both two, and the two placement boxes (20) respectively contain potassium permanganate particles and activated carbon particles for testing.
5. The mask performance testing device according to claim 1, characterized in that, The simulation unit (1) is equipped with a ventilation pipe (6), one end of which extends into the interior of the simulation protrusion (3), and the other end is fixedly connected to the air outlet of the small hot air blower (5).
6. The mask performance testing device according to claim 5, characterized in that, The simulation unit (1) has rope-hanging ball rods (12) fixedly installed on both the left and right side walls.
7. The mask performance testing device according to claim 6, characterized in that, A controller (7) is fixedly mounted on the top of the simulation unit (1).
8. The mask performance testing device according to claim 7, characterized in that, Both clamping assemblies (4) and the small hot air blower (5) are electrically connected to the controller (7).