Nano graphene medical mask material falling generation and collection device

Abstract

The utility model discloses a nano graphene medical mask material falling generation and collection device, and relates to the technical field of material falling collection equipment. The device structurally comprises a test box, a mask clamp, a falling material collector and an air supply control box, the mask clamp is mounted in the test box; a nano graphene medical mask is clamped and mounted on the mask clamp to divide the interior of the test box into a left cavity part and a right cavity part which are independent from each other; an air inlet guide pipe penetrates through and is fixed on the right wall of the test box; the other end of the air inlet conduit is connected with the air outlet end of the air supply control box; an air outlet conduit penetrates through and is fixed on the left wall of the test box; the other end of the air outlet guide pipe is connected with an air inlet of the falling material collector; and an air outlet of the falling material collector is communicated with the air inlet end of the air supply control box through a backflow air pipe. The utility model aims to solve the problem that the material of the nano-graphene medical mask may fall off, and effectively collect the fallen materials for subsequent safety and effectiveness evaluation.

Description

Technical Field

[0001] The utility model belongs to the technical field of material shedding and collection equipment, and in particular relates to a nano-graphene medical mask material shedding generation and collection device. Background Art

[0002] Nanomaterials exhibit excellent volume effects, surface effects, quantum effects, and dielectric field effects. As an emerging material, nanomaterials are being developed and designed for use in certain medical devices due to their excellent biocompatibility and safety. For example, nanosilver, due to its excellent antibacterial properties, is used in products such as Band-Aids, antimicrobial agents, and dressings. Nanoceramics, due to their small grain size and surface effects, can significantly enhance material strength, hardness, toughness, and superplasticity, and are being developed for use in products such as bone repair materials. Nanographene, due to its enhanced electrostatic adsorption properties, is being designed for use in respiratory anesthetic filtration products such as medical masks and respirators.

[0003] Medical masks can effectively cover the wearer's mouth, nose and mandible during clinical use, preventing pathogens, microorganisms, droplets, etc. from directly contaminating the user, patients or the environment. Its key performance, particle filtration efficiency, is the main performance indicator reflecting particle filtration. It mainly achieves filtering through physical filtration of the mask's meltblown cloth and electrostatic adsorption filtration. The use of nanographene materials can effectively improve the electrostatic adsorption capacity while maintaining physical isolation, thereby greatly improving the particle filtration efficiency of medical masks.

[0004] While most medical device products already have national or pharmaceutical industry standards for safety and effectiveness, there are currently no standards, established testing methods, or devices for effectively evaluating the safety and effectiveness of new materials like nanographene. For nanographene masks, the size, distribution, and morphology of nanomaterials in medical devices are primarily characterized through methods such as X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FTIR). However, nanographene medical masks may pose a risk of material shedding and entering the respiratory system, and there are currently no established devices to detect material shedding.

[0005] To this end, this application document provides a material shedding generation and collection device for a nanographene medical mask to test the possible shedding of nanomaterials in the nanographene medical mask. Utility Model Content

[0006] The purpose of the utility model is to provide a device for generating and collecting the material shedding of a nanographene medical mask, which can effectively capture and collect the material shedding of the nanographene medical mask by providing a closed and automated testing environment.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] The utility model discloses a device for generating and collecting the shedding of nano-graphene medical mask materials, comprising a test box, a mask fixture, a shedding material collector and an air supply control box; the mask fixture is installed inside the test box; the mask fixture clamps a nano-graphene medical mask to divide the interior of the test box into two independent left and right cavity parts; an air inlet duct is fixed through the right wall of the test box, and the inner end of the air inlet duct is close to the right side of the nano-graphene medical mask installed on the mask fixture; the other end of the air inlet duct is connected to the air outlet end of the air supply control box; an air outlet duct is fixed through the left wall of the test box, and the inner end of the air outlet duct is close to the left side of the nano-graphene medical mask installed on the mask fixture; the other end of the air outlet duct is connected to the air inlet of the shedding material collector; the air outlet of the shedding material collector and the air inlet end of the air supply control box are connected through a return air pipe.

[0009] As a preferred technical solution of the present invention, it also includes a test bench; the test box and the falling material collector are respectively installed on the test bench; and the air supply control box is installed on the test box.

[0010] As an optimal technical solution of the present invention, the shed material collector includes a cavity and a sealing cover connected by threads; a partition steel mesh is provided in the middle of the cavity; a multi-layer filter membrane is installed on the partition steel mesh; the air inlet and the air outlet are respectively opened on the cavity, and the air inlet is located above the partition steel mesh; the air outlet is located below the partition steel mesh.

[0011] As an optimal technical solution of the present invention, the test box includes a rectangular box body with an open front end and a box cover; the mask clamp is fixed on the upper and lower inner walls and the rear wall of the rectangular box body, and the front end of the mask clamp is flush with the open end of the rectangular box body; a rubber pad is provided between the rectangular box body, the mask clamp and the box cover; the box cover and the rectangular box body are fixed by a number of quick buckles.

[0012] As an optimal technical solution of the present invention, the mask fixture includes a fixed rectangular flange plate and a movable rectangular flange plate; a nanographene medical mask is placed between the fixed rectangular flange plate and the movable rectangular flange plate and fixed by bolts; the fixed rectangular flange plate is fixed to the inner wall of the test box; and a right-angle plate for guiding the movable rectangular flange plate is respectively fixed at the four corners of one side of the fixed rectangular flange plate.

[0013] As an optimal technical solution of the present utility model, the air supply control box includes an outer box body, a PLC controller, an air pump, and a start-stop switch; the PLC controller and the air pump are installed in the outer box body; the air intake duct is connected to the air outlet end of the air pump; the return air pipe is connected to the air inlet end of the air pump; the PLC controller controls the start and stop of the air pump through a relay switch.

[0014] As a preferred technical solution of the present invention, a diffuser cover is fixed to the free end of the air inlet duct and the free end of the air outlet duct inside the test box, respectively, and the two diffuser covers are coaxially arranged.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model forms a circulating airflow impacting the nano-graphene medical mask through a test box, a mask fixture, a shedding material collector, an air supply control box, an air inlet duct, an air outlet duct and a return air pipe, thereby realizing the process of mask material shedding and filtering and collecting.

[0017] 2. This utility model utilizes a filter membrane to collect nanomaterials, including graphene, that fall from the mask. Its split structure facilitates the removal of fallen materials from the filter membrane, facilitating subsequent testing and analysis. Using a filter membrane, such as a polytetrafluoroethylene (PTFE) filter, effectively collects nanoparticles, providing essential physical evidence for safety assessments.

[0018] 3. This test chamber, combined with a mask fixture for securing nanographene medical masks, creates a closed environment that simulates actual usage conditions and allows shed materials to be collected in a controlled environment. This helps achieve precise capture of shed materials, providing reliable samples for analysis.

[0019] 4. This utility model returns purified air to the air supply control box through a return air duct, forming a closed-loop system, reducing the possibility of external contamination while also improving resource utilization efficiency. Diffusers are used at the free ends of the inlet and outlet ducts to help smooth the airflow, reduce the escape of debris, and improve collection efficiency.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the nanographene medical mask material shedding and collection device of the utility model.

[0023] Figure 2 for Figure 1 Top view of .

[0024] Figure 3 Schematic diagram of the axial section of the shedding material collector.

[0025] Figure 4 Schematic cross-section of the test chamber, mask fixture, air inlet duct, and air outlet duct.

[0026] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0027] 1-test chamber, 2-mask fixture, 3-shedding material collector, 4-air supply control box, 5-inlet duct, 6-outlet duct, 7-return air pipe, 8-test bench, 9-expansion mask, 11-rectangular box, 12-box cover, 13-quick buckle, 14-rubber pad, 21-fixed rectangular flange plate, 22-movable rectangular flange plate, 23-bolt, 24-right-angle plate, 31-cavity, 32-sealing cover, 33-air inlet, 34-air outlet, 35-partition steel mesh, 36-filter membrane. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Specific embodiment one:

[0030] See also Figure 1-4As shown, the present invention is a device for detecting and collecting material shedding from nanographene medical masks, comprising a test chamber 1, a mask fixture 2, a shedding material collector 3, and an air supply control box 4. The test chamber 1, in conjunction with the mask fixture 2, secures the nanographene medical mask within the enclosed chamber. The shedding material collector 3 is used to filter and collect material shed from the graphene medical mask, including graphene and other materials within the mask. The air supply control box 4 drives the airflow circulation throughout the device.

[0031] The mask fixture 2 is installed inside the test box 1, and the nano-graphene medical mask is clamped and installed on the mask fixture 2, dividing the inside of the test box 1 into two independent left and right cavity parts.

[0032] An air inlet duct 5 is fixed through the right wall of the test box 1, and the inner end of the air inlet duct 5 is close to the right side of the nano-graphene medical mask installed on the mask fixture 2. The other end of the air inlet duct 5 is connected to the air outlet end of the air supply control box 4. An air outlet duct 6 is fixed through the left wall of the test box 1, and the inner end of the air outlet duct 6 is close to the left side of the nano-graphene medical mask installed on the mask fixture 2. The above-mentioned close distance is not more than 1 cm. The other end of the air outlet duct 6 is connected to the air inlet 33 of the shedding material collector 3. The nano-graphene medical mask takes in air on the right side and exhausts air on the left side. The air inlet duct 5 and the air outlet duct 6 are coaxially arranged on both sides of the nano-graphene medical mask to ensure that the material that falls off during the air inlet and outlet process can be smoothly guided from the air outlet duct 6 to the shedding material collector 3, realizing the shedding and collection process of the graphene medical mask material.

[0033] The air outlet 34 of the shedding material collector 3 is connected to the air inlet of the air supply control box 4 via a return air pipe 7. The air supply control box 4, the air inlet pipe 5, the nanographene medical mask held by the mask fixture 2 in the test chamber 1, the air outlet pipe 6, the shedding material collector 3, and the return air pipe 7 form a cyclical airflow process that impacts the nanographene medical mask and collects the shedding material. The shedding material is collected by the air outlet pipe 6 and directed to the shedding material collector 3 for filtration and collection.

[0034] Before the test begins, open the test box 1, install the nanographene medical mask on the mask fixture 2, and then close the test box 1. Figure 1-2The device shown is connected to an air inlet duct 5, an air outlet duct 6, and a return air pipe 7 to form a closed air circulation device. The air supply control box 4 is started, and the circulating air flow consisting of the air supply control box 4, the air inlet duct 5, the nanographene medical mask clamped on the mask fixture 2 in the test chamber 1, the air outlet duct 6, the shed material collector 3, and the return air pipe 7 impacts the nanographene medical mask. The material shed by the mask is filtered and collected in the shed material collector 3, and the purified gas without shed material is returned to the air supply control box 4 to achieve the effect of recycling without introducing interference from external air. According to the above experimental process, the shed material of the nanographene medical mask is collected, and the collected shed material is convenient for subsequent detection and analysis.

[0035] To prevent interference from other equipment during operation, an independent test bench 8 is installed. The test chamber 1 and the shedding material collector 3 are mounted on the test bench 8. An air supply control box 4 is mounted on the test chamber 1. During operation, the air supply control box 4 generates vibrations, which are transmitted to the nanographene medical mask installed in the test chamber 1. The combined effects of airflow impact and vibration help to reduce the shedding of nanographene medical mask material.

[0036] The shed material collector 3 includes a cavity 31 and a sealing cover 32 connected by threads. A partition steel mesh 35 is provided in the middle of the cavity 31. A multi-layer filter membrane 36 is installed on the partition steel mesh 35. The air inlet 33 and the air outlet 34 are respectively opened on the cavity 31, and the air inlet 33 is located above the partition steel mesh 35. The air outlet 34 is located below the partition steel mesh 35. The filter membrane 36 used in this solution is a polytetrafluoroethylene (PTFE) filter membrane. The split structure of the shed material collector 3 facilitates the collection of filtered nanographene medical mask shed materials for further analysis and detection.

[0037] The test box 1 includes a rectangular box body 11 with an open front end and a box cover 12. The mask fixture 2 is fixed to the upper and lower inner walls and the rear wall of the rectangular box body 11, and the front end of the mask fixture 2 is flush with the open end of the rectangular box body 11. A rubber pad 14 is provided between the rectangular box body 11, the mask fixture 2, and the box cover 12. The box cover 12 is connected and fixed to the rectangular box body 11 by a number of quick buckles 13. The seal between the test box 1 itself and the mask fixture 2 is good, which is conducive to avoiding interference from the external environment and ensuring the shedding and collection of materials when the airflow impacts the mask.

[0038] The mask fixture 2 specifically includes a fixed rectangular flange plate 21 and a movable rectangular flange plate 22. A nanographene medical mask is placed between the fixed rectangular flange plate 21 and the movable rectangular flange plate 22, and is connected and fixed by bolts 23. The fixed rectangular flange plate 21 is fixed to the inner wall of the test chamber 1. A right-angle plate 24 for guiding the movable rectangular flange plate 22 is fixed to each of the four corners of one side of the fixed rectangular flange plate 21. The outer diameter of the movable rectangular flange plate 22 is smaller than the outer diameter of the fixed rectangular flange plate 21. The movable rectangular flange plate 22 is placed along the four right-angle plates 24, and alignment is fast and accurate when fixed with bolts.

[0039] The air supply control box 4 includes an outer housing, a PLC controller, an air pump, and a start-stop switch. The PLC controller and air pump are mounted within the outer housing. The air inlet duct 5 is connected to the air pump's outlet. The return air pipe 7 is connected to the air pump's inlet. The PLC controller controls the air pump's start and stop via a relay switch. The PLC controller can program a start time, specifically, the continuous operation time of the air pump when the start-stop switch activates the PLC controller program.

[0040] The free ends of the air inlet duct 5 and the air outlet duct 6 inside the test chamber 1 are each fixed with a diffuser cover 9, and the two diffuser covers 9 are coaxially arranged. The use of the diffuser cover 9 helps to smoothly guide the detached material around the outlet duct 6 along with the air flow and transport it to the outlet duct 6, thereby reducing the escape of detached material.

[0041] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0042] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A nanographene medical mask material shedding generation and collection device, characterized by: It includes a test box (1), a mask fixture (2), a falling material collector (3) and an air supply control box (4); The mask fixture (2) is installed inside the test box (1); the mask fixture (2) clamps and installs a nanographene medical mask, dividing the inside of the test box (1) into two independent left and right cavity parts; An air intake duct (5) is fixedly provided through the right wall of the test box (1), and the inner end of the air intake duct (5) is close to the right side of the nanographene medical mask mounted on the mask fixture (2); the other end of the air intake duct (5) is connected to the air outlet end of the air supply control box (4); An air outlet duct (6) is fixedly provided through the left wall of the test box (1), and the inner end of the air outlet duct (6) is close to the left side of the nanographene medical mask mounted on the mask fixture (2); the other end of the air outlet duct (6) is connected to the air inlet (33) of the shedding material collector (3); The air outlet (34) of the fallen material collector (3) is connected to the air inlet end of the air supply control box (4) via a return air pipe (7).

2. The nano-graphene medical mask material shedding generation and collection device according to claim 1, characterized in that, It also includes a test bench (8); the test box (1) and the falling material collector (3) are respectively installed on the test bench (8); and the air supply control box (4) is installed on the test box (1).

3. The nano-graphene medical mask material shedding generation and collection device according to claim 1, characterized in that, The shed material collector (3) comprises a cavity (31) and a sealing cover (32) connected by threads; a separating steel mesh (35) is provided in the middle of the cavity (31); a multi-layer filter membrane (36) is installed on the separating steel mesh (35); the air inlet (33) and the air outlet (34) are respectively opened on the cavity (31), and the air inlet (33) is located above the separating steel mesh (35); and the air outlet (34) is located below the separating steel mesh (35).

4. The nano-graphene medical mask material shedding generation and collection device according to claim 1, characterized in that, The test box (1) comprises a rectangular box body (11) with an open front end and a box cover (12); the mask fixture (2) is fixed to the upper and lower inner walls and the rear wall of the rectangular box body (11), and the front end of the mask fixture (2) is flush with the open end of the rectangular box body (11); a rubber pad (14) is provided between the rectangular box body (11), the mask fixture (2) and the box cover (12); the box cover (12) and the rectangular box body (11) are connected and fixed by a plurality of quick buckles (13).

5. The nano-graphene medical mask material shedding generation and collection device according to claim 1, characterized in that, The mask fixture (2) comprises a fixed rectangular flange plate (21) and a movable rectangular flange plate (22); a nanographene medical mask is placed between the fixed rectangular flange plate (21) and the movable rectangular flange plate (22), and is connected and fixed by bolts (23); the fixed rectangular flange plate (21) is fixed on the inner wall of the test box (1); and a right-angle plate (24) for guiding the movable rectangular flange plate (22) is fixed to each of the four corners of one side of the fixed rectangular flange plate (21).

6. The nano-graphene medical mask material shedding generation and collection device according to claim 1, characterized in that, The air supply control box (4) comprises an outer box body, a PLC controller, an air pump, and a start-stop switch; the PLC controller and the air pump are installed in the outer box body; the air inlet duct (5) is connected to the air outlet end of the air pump; the return air pipe (7) is connected to the air inlet end of the air pump; the PLC controller controls the start and stop of the air pump via a relay switch.

7. The nano-graphene medical mask material shedding generation and collection device according to claim 1, characterized in that, A diffuser cover (9) is fixed to the free end of the air inlet duct (5) and the free end of the air outlet duct (6) inside the test box (1), and the two diffuser covers (9) are coaxially arranged.

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