CN212235347U

CN212235347U - Mask disinfection device

Info

Publication number: CN212235347U
Application number: CN202020320574.8U
Authority: CN
Inventors: 卢山; 郑浩巍
Original assignee: Beijing Jishuitan Hospital
Current assignee: Beijing Jishuitan Hospital
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-12-29
Anticipated expiration: 2030-03-13

Abstract

The utility model relates to a gauze mask degassing unit, it includes parts such as casing, heating element, fan, motor, even axle, hob, adapter sleeve and gauze mask frame, the device is through designing into coaxial mode with motor, fan, even axle, hob and adapter sleeve for a motor plays the effect that drives fan and gauze mask frame rotation simultaneously, is favorable to realizing abundant air flow and temperature conduction, optimizes disinfection effect.

Description

Mask disinfection device

Technical Field

The utility model relates to a mask degassing unit belongs to disinfecting equipment technical field.

Background

The mask is a protective article frequently used by medical staff and is used for protecting personal health and sanitation in daily work. For the general public, the mask is also an important protection means for ensuring personal health and preventing respiratory infectious diseases from spreading in public places.

However, masks for health care and disease protection purposes (e.g., disposable surgical masks, N95 masks) are mostly disposable, and although disposable ensures hygienic safety, the corresponding material costs and demands are enormous. During the epidemic transmission of infectious diseases, especially during special periods, such as the current time when new coronavirus (nCoV-19) is abused, the originally limited mask supply resources and productivity are greatly challenged, which causes an undesirable situation for masks and even worldwide shortages and outages.

In reality, in many cases, the time for wearing the mask once when people go out is often limited, and at the moment, the mask often does not lose or lose the filtering and adsorbing functions completely, and is very pity if the mask is directly discarded. Especially for the public use in the non-medical environment, the mask possibly has great use value after being used once, and if the mask is discarded, great waste of materials and consumables is caused, especially in the emergency situation of epidemic situation. However, if the mask is to be used continuously, the possibility of infection due to contamination of germs on the surface of the touch mask is not excluded. Therefore, masks for medical protective purposes are not generally intended to be used directly after one use without treatment.

It is known that electrostatic adsorption is a very important filtering mode in a mask, and any cleaning agent and disinfectant cannot be adopted during mask disinfection, because the cleaning agent and the disinfectant can destroy the electrostatic adsorption of electrets in mask materials, so that the mask efficiency is obviously reduced. Water and alcohol can seriously attenuate the electret charge of a filter layer of the mask, so that the filtering efficiency is greatly reduced. In addition, 75% alcohol sprayed on the surface of the medical mask hardly has a disinfection effect on the interior of the medical mask, and on the other hand, the alcohol can also damage the waterproof structure of the outer layer of the mask, because the surface tension of the alcohol is greatly different from that of water, the absorption of the mask material treated by the alcohol to water (blood and saliva) can be enhanced, and the failure of the filter layer of the mask can be accelerated.

It would be particularly advantageous and socially significant if the used masks (especially the N95 standard mask with excellent protective properties) could be sterilized to effectively kill the pathogenic microorganisms attached to the surface without affecting the adsorption and filtration properties. The method has particularly important significance and great value for effectively resisting epidemic situations, guaranteeing public health and stabilizing people.

Obviously, this subject has a real enormous need and significance. However, there is no ideal solution to this problem in particular in the prior art. CN108653771A discloses a mask disinfection device, which is a disinfection device for the production industry in the production process, and is not suitable for the disinfection requirement of the public in the use process for the purpose of reusing the mask.

In summary, there is a strong need in the art for a convenient, easy-to-use device that can effectively disinfect used masks, particularly the N95 standard mask, which is highly protective, to address the urgent need for the transmission of infectious diseases, particularly the current resistance to the new coronavirus (nCoV-19).

Disclosure of Invention

An object of the utility model is to provide a can realize carrying out the gauze mask of disinfection demand to the gauze mask especially accords with N95 standard or the gauze mask of corresponding standard in the use link.

The inventors propose that with appropriate dry heat conditions (e.g., between 50 and 75 degrees celsius, such as 56 degrees celsius for 30 minutes), microorganisms such as viruses, bacteria, etc. can be effectively killed while substantially not adversely affecting the performance of the mask. Based on this, the present inventors have designed and completed a mask sterilizing device of the present invention.

Gauze mask degassing unit include casing (1), heating element (2), fan (4), motor (5), even axle (7), gauze mask frame (8), threaded rod (9), adjusting nut (10), clip (11) and adapter sleeve (12), its characterized in that, the axle center part of fan (4) with even axle (7) link to each other and are driven by motor (5), even axle (7) pass through adapter sleeve (12) with the threaded rod (9) is coaxial links to each other, gauze mask frame (8) are fixed in the suitable position department of threaded rod (9) through adjusting nut (10).

The heating element (2) of the present invention may be any suitable heating element, for example in the form of a heating tube or heating plate. An electric heating wire (3) is arranged in the heating element (2), and the heating element can be made of ceramic or metal materials.

The mask frame (8) consists of an upper annular rod and a lower annular rod (18), the annular rods (18) are fixed on an internal thread circular sleeve through connecting rods (17), and the internal thread circular sleeve is matched with the threaded rod (9); the annular rod (18) is provided with a clip (11) for clamping and fixing the mask. The number of the clips (11) can be determined according to the requirement, and can be a plurality of clips, such as 3 clips, 4 clips, 5 clips, 6 clips, 7 clips, 8 clips, 9 clips or 10 clips.

The utility model discloses a gauze mask degassing unit can be provided with accessory parts such as stabilizer blade (13) and handle (14), is convenient for place and draw.

The housing of the mask device of the present invention may be any suitable shape, but preferably has a symmetrical shape, such as a cylinder, a cube, a cuboid, a (regular) hexagonal prism, or other polyhedron.

The mask disinfection device of the invention can be additionally provided with a temperature control unit, a rotating speed adjusting unit and a time adjusting unit which are respectively used for adjusting the heating temperature (the temperature of the space in the device), the rotating speed of the fan and the disinfection treatment time (which are respectively realized by adjusting the operation time of the heating fan and the fan). More preferably, gauze mask degassing unit can include the PLC control unit, it is connected with heating wire and motor among the heating element to realize controlled temperature (heating power) and rotational speed, in addition, this PLC control unit preferably has timing function, can realize disinfection time (including heating time, rotation time) settlement and control. In a preferred aspect, the heating element (2) is connected to a slide rheostat to regulate the temperature of the desired heating by controlling the heating power.

The utility model discloses have following unique design, realized a plurality of favourable effects:

1) the dry heat disinfection mode is realized by heating the heating element, so that the performance of the mask can be prevented from being reduced on the premise of effectively realizing the disinfection purpose;

2) the fan is driven by the motor to rotate, so that the air in the device is kept to flow properly, the balance of temperature conduction is facilitated, the phenomenon that the mask performance is damaged due to overhigh local temperature is avoided, and the safety is ensured;

3) by arranging the mask frame which comprises the upper annular rod, the lower annular rod and the upper adjusting nut and the lower adjusting nut, the distance between the two annular rods can be adjusted according to the actual size of the mask, so that the mask can be fully unfolded and fixed on the mask frame;

4) the clamps on the annular rod of the mask frame can be designed to be fixed at specific positions on the annular rod according to requirements, and can also be designed to be in a mode of freely sliding on the annular rod through the slidable circular ring, or a part of the clamps are fixed at specific positions on the annular rod, and other clamps freely slide on the annular rod through the slidable circular ring, so that the design greatly improves the adaptability, is beneficial to fully unfolding masks of different types and sizes during disinfection, and further ensures good disinfection effect;

5) the motor, the fan, the connecting shaft, the screw rod and the connecting sleeve are all designed into a coaxial mode (preferably coaxial along the vertical direction), so that one motor simultaneously plays a role in driving the fan and the mask frame to rotate, the fan is rotated to be favorable for air flow and temperature conduction, and the mask frame is rotated to be favorable for different surfaces and positions of the mask to be sufficiently sterilized.

Preferably, the outer surface of the shell of the mask disinfection device of the present invention is provided with a temperature setting knob, a temperature display window, a time setting knob and a rotation speed setting knob.

The design of the utility model is found through experiments that the device of the invention can realize good disinfection effect under the low-speed rotation of the fan and the proper power of the heating unit. Preferably, the heating unit is adjusted so that the temperature inside the device is maintained in the temperature range of 55-75 degrees celsius, and the heating time is maintained in the range of 20 to 80 minutes, preferably 30 to 60 minutes; particularly preferably, it is set at 70 ℃ for 30 minutes or 70 ℃ for 60 minutes.

The fan speed of the present invention is preferably designed and controlled within a relatively low speed range, such as 60 to 300 revolutions per minute.

The utility model discloses a different sizes can be designed into to gauze mask degassing unit according to actual need. Preferably, 3 common-size masks are placed at most in the circumferential direction of the annular rod of the mask frame, so that the mask disinfection device can be manufactured to be relatively compact in size and convenient to use at home.

In a preferred embodiment of the invention, the shafts of the motor, the fan, the coupling shaft, the screw rod and the connecting sleeve are preferably all cylindrical.

In the mask disinfection device of the utility model, the disinfection mode is realized mainly by the heating unit through the heating mode of 'dry heat'. In some more preferred solutions, in addition to the "dry heat" mode by the heating unit, an ultraviolet disinfection mode is additionally included in order to ensure a better disinfection effect or to increase the choice of disinfection mode.

In the scheme including the ultraviolet disinfection mode, an ultraviolet lamp is additionally arranged in the shell. The ultraviolet lamp is preferably arranged on the side surface of the inner wall of the shell; more preferably, two uv lamps are provided, one of which is disposed on the side of the inner wall of the housing (the outer uv lamp) and the other is disposed near and parallel to the screw rod (see fig. 3) or inside the screw rod (the inner uv lamp), so that the two uv lamps respectively irradiate the outward surface of the mask and the inward surface of the mask (the surface facing the axial center). The inner uv lamp remains relatively stationary as the mask frame rotates, which can be achieved by fixing it to an outer sleeve (not shown in fig. 3) that is independent of the axis; in addition, the position of the inboard UV lamp can be fine tuned up and down so that it is just between the upper and lower ring bars of the mask frame.

In the case of the above-mentioned arrangement of the double uv lamps, it is preferable that the inner uv lamps are arranged inside the screw (i.e. the uv lamps are coaxial with the screw), in which case the screw is preferably made of transparent thin glass or plastic, or the screw is made of non-transparent material (e.g. metal) but designed in the form of spaced hollows, which do not affect the continuity of the thread, so as to allow the uv radiation to exit. The inner ultraviolet lamp and the screw rod are independent of each other, namely the inner ultraviolet lamp does not rotate along with the rotation of the screw rod, and the inner ultraviolet lamp can be fixed on a base of the device through a metal wire in a cavity of the screw rod.

In the mask disinfection apparatus of the present invention, the fan blades may be in a vertical direction, but preferably exhibit a non-horizontal non-vertical direction to promote sufficient air flow.

In the mask disinfection device of the present invention, the position of the heating element is not limited, and is not limited to be placed at the lower position of the device, and it can be set at any suitable position to meet the actual manufacturing and use requirements.

In the embodiment of the present invention which relates only to the "dry heat" sterilization mode, the heating temperature is preferably set at 70 ℃ for 30 minutes; in embodiments of the invention involving a "dry heat" + "uv" disinfection mode, the uv wavelength is preferably set at 254nm and the uv exposure time is preferably set between 10 minutes and 1 hour, for example between 30 minutes and 1 hour. The mask disinfection device of the utility model can comprise a switch for independently turning on or off the heating, the fan and the ultraviolet lamp; the switch may also be integrated in the function of the PLC control unit.

Drawings

Fig. 1 is a schematic front view of a mask sterilizing apparatus according to an embodiment of the present invention (dry heat sterilizing mode).

In the figure: 1-a shell; 2-a heating unit; 3-electric heating wire; 4-a fan; 5-a motor; 7-connecting shaft; 8-mask frame; 9-a screw rod; 10-adjusting the nut; 11-a clamp; 12-a connection sleeve; 13-a leg; 14-a handle; 16-fixed base

Fig. 2 is a schematic view of a mask frame used in the mask sterilizer of the present invention.

In the figure: 9-a screw rod; 10-adjusting the nut; 11-a clamp; 12-a connection sleeve; 17: a connecting rod; 18-ring rod

Fig. 3 is a schematic front view of a mask sterilizing device according to an embodiment of the present invention (dry heat + uv sterilizing mode).

In the figure: 1-a shell; 2-a heating unit; 3-electric heating wire; 4-a fan; 5-a motor; 6-ultraviolet lamp (outside ultraviolet lamp); 7-connecting shaft; 8-mask frame; 9-a screw rod; 10-adjusting the nut; 11-a clamp; 12-a connection sleeve; 13-a leg; 14-a handle; 15-ultraviolet lamp (inside ultraviolet lamp); 16-fixed base

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. It should be noted that the description is only illustrative of some embodiments of the invention. All other embodiments obtained by a person skilled in the art without creative work based on the exemplary embodiments of the present invention belong to the protection scope of the present invention.

Fig. 1 shows a mask disinfection device according to the present invention, which is based on "dry heat" disinfection, and comprises a housing (1), wherein a heating element (2), a fan (4), a motor (5), a connecting shaft (7), a mask frame (8), a threaded rod (9), an adjusting nut (10), a clip (11), a connecting sleeve (12) and other components are arranged in the housing (1), a heating wire (3) is arranged inside the heating element (2), wherein the fan (4) is coaxially connected with the connecting shaft (7) and driven by the motor (5), the connecting shaft (7) is coaxially connected with the threaded rod (9) through the connecting sleeve (12), and the mask frame (8) is fixed at a proper position of the threaded rod (9) through the adjusting nut (10); the mask frame (8) is composed of an upper annular rod and a lower annular rod (18), the annular rods (18) are fixed on an internal thread circular sleeve through connecting rods (17), and the internal thread circular sleeve is connected with a threaded rod. The housing can be dimensioned as desired to accommodate the above-mentioned components as well as several masks to be sterilized (e.g. 1, 2, 3, 4, 5 or 6 or more) and to ensure a suitable space for the circulation and circulation of the hot air. The distance between the upper annular rod (18) and the lower annular rod (18) of the mask frame (8) is adjusted through the upper adjusting nut and the lower adjusting nut (10) so as to be consistent with the actual size of the mask to be disinfected, and the mask is fully unfolded and fixed; the clamps (11) on the annular rod (18) of the mask frame can be designed to be fixed at specific positions on the annular rod (18) according to requirements, and can also be designed to be in a mode of freely sliding on the annular rod (18) through a slidable ring, or a part of the clamps (11) are fixed at specific positions on the annular rod (18), and other clamps (11) freely slide on the annular rod (18) through the slidable ring, so that the adaptability can be greatly improved, masks of different types and sizes can be fully unfolded during disinfection, and a good disinfection effect is further ensured. In addition, motor (5), fan (4), even axle (7), hob (9) and adapter sleeve (12) all design into coaxial mode (preferably along vertical direction coaxial) for a motor can play the rotatory effect of drive fan and gauze mask frame simultaneously, and the fan is rotatory to be favorable to air flow and temperature conduction, and the gauze mask frame is rotatory then to be favorable to the different surfaces and the position of gauze mask by abundant disinfection, and this is very important to guaranteeing the disinfection effect.

Fig. 2 shows a mask frame (8) in the mask disinfection device of the present invention, which comprises two annular rods (18) arranged in parallel, wherein the two annular rods (18) are connected by a screw rod (9), and each annular rod (18) is connected to an internal thread circular sleeve (not shown in the figure) through a connecting rod (17) (preferably 3 connecting rods), and the internal thread circular sleeve is matched with the threaded rod (9); the annular rod (18) can be further fixed in position on the threaded rod (9) by means of an adjusting nut (10). When the disinfection operation is carried out, the mask frame (8) is connected with other parts (a connecting shaft, a fan and a motor) of the device through a connecting sleeve (12) so as to realize one-time rotation along with the fan; after the sterilization operation is finished, the mask frame (8) can be separated from other parts of the device so as to conveniently re-clamp the mask or take the mask out of the device.

Fig. 3 is a schematic front view showing a mask sterilizing apparatus according to an embodiment of the present invention (dry heat + uv sterilizing mode), in which uv lamps (6) disposed at the side of the inner wall of the housing (outer uv lamps) and uv lamps (15) disposed near and parallel to the spiral rods (inner uv lamps) are additionally added to the apparatus shown in fig. 1. The device has additionally increased the ultraviolet disinfection mode, helps guaranteeing better disinfection effect and increases the selection of disinfection mode, can further adapt to different disinfection demands. In particular, an inner and an outer UV lamps are arranged so that the two UV lamps can irradiate the outward surface of the mask and the inward surface of the mask (the surface facing the axis) respectively. The inner uv lamp (15) remains relatively stationary as the mask frame rotates, which is achieved by fixing it to an outer sleeve (not shown in fig. 3, attached to it in the manner shown by the dotted lines) independent of the axis; in addition, the actual operating position of the inner uv lamp (15) can be fine-tuned up and down (e.g. by means of wires attached thereto) so that it is located exactly between the upper and lower two annular bars (18) of the mask frame (8). With regard to the power and wavelength of the ultraviolet lamp, a general power and wavelength may be employed, for example a power of 2W to 100W, a wavelength of 150nm to 280nm, for example 185nm to 254nm, etc.

In the present invention, the heating element and the fan and the ultraviolet lamp are preferably connected to the PLC control unit. Through the control effect of PLC, can play the switching action to and play and adjust heating power, fan speed, ultraviolet wavelength, and further carry out time setting (including the time of heating, rotation and ultraviolet irradiation), thereby realize controlling as required. In practice, the selection of the above-mentioned specific adjustment parameters is related to the actual sterilization requirements, such as the number of masks to be sterilized, the size of the shell, etc.

The utility model discloses a gauze mask degassing unit can realize the high efficiency and the convenient disinfection to using the gauze mask, and the demand of epidemic prevention when the public epidemic prevention material is in short supply during the specially adapted epidemic situation emergency is particularly suitable for the use at home, has great social meaning.

Through the above description of the present invention, those skilled in the art can easily understand and implement the technical solutions of the present invention. Various modifications to these preferred embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application.

Claims

1. A gauze mask degassing unit, characterized in that, it includes casing (1), heating element (2), fan (4), motor (5), even axle (7), gauze mask frame (8), threaded rod (9), adjusting nut (10), clip (11) and adapter sleeve (12), wherein the said fan (4) links to each other with the said even axle (7) is coaxial and is driven by motor (5), the said even axle (7) links to each other with the said threaded rod (9) is coaxial through the said adapter sleeve (12), the said gauze mask frame (8) is fixed in the appropriate position of the threaded rod (9) through the adjusting nut (10); the mask frame (8) consists of an upper annular rod and a lower annular rod (18), the annular rods (18) are fixed on an internal thread circular sleeve through connecting rods (17), and the internal thread circular sleeve is matched with the threaded rod (9); the annular rod (18) is provided with a clip (11) for clamping and fixing the mask.

2. Mask disinfection apparatus according to claim 1, characterized in that an ultraviolet lamp is also provided in the housing (1).

3. The mask sterilizer of claim 2, wherein the ultraviolet lamps comprise ultraviolet lamps disposed at the side of the inner wall of the housing and ultraviolet lamps disposed near and parallel to the screw bar or inside the screw bar.

4. Mask disinfection apparatus according to anyone of claims 1 to 3, further comprising a PLC control unit connected to the heating wires (3) in the heating element (2) and to the motor (5) to control the temperature and the rotation speed.

5. Mask disinfection apparatus according to anyone of claims 1 to 3, characterized in that the outer surface of the housing (1) is provided with a temperature setting knob, a temperature display window, a time setting knob and a rotation speed setting knob.

6. Mask disinfection apparatus according to claim 4, characterized in that the outer surface of the shell (1) is provided with a temperature setting knob, a temperature display window, a time setting knob and a rotation speed setting knob.

7. Mask disinfection apparatus according to anyone of claims 1 to 3, characterized in that the heating element (2) is connected with a slide rheostat to regulate the temperature of the required heating by controlling the heating power.

8. Mask disinfection apparatus according to claim 4 characterized in that the heating element (2) is connected with a slide rheostat to regulate the temperature of the required heating by controlling the heating power.

9. Mask disinfection apparatus according to claim 5 characterized in that the heating element (2) is connected with a slide rheostat to regulate the temperature of the required heating by controlling the heating power.