Mural degerming equipment

Abstract

The embodiment of the utility model provides mural degerming equipment, which relates to the technical field of cultural relic protection, is used for being matched with a cleaning soft brush for use, and comprises a box body, a vacuum pump, a purification mechanism and a negative pressure pipe. The vacuum pump, the purification mechanism and the negative pressure pipe are all installed in the box body, the negative pressure pipe communicates with the vacuum pump through the box body, and the vacuum pump is used for generating negative pressure in a pipe cavity of the negative pressure pipe. The negative pressure pipe is provided with an adsorption end located outside the box body, and the adsorption end is used for facing the mural body to form a negative pressure area on the mural body. And the purification mechanism is used for purifying gas sucked through the adsorption end. By means of the design of the device, diffusion and propagation of bacterial colonies in the cultural relic cleaning process can be reduced, pollution to the environment is reduced, and the adverse effect on the health of operators during cultural relic maintenance is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cultural relics protection, and particularly relates to a mural degerming equipment. BACKGROUND

[0002] Ancient murals are an important part of cultural heritage, and are facing or suffering from physical, chemical, biological and other factors of deterioration and damage due to long time and changes in the preservation environment. Among them, the microbial colonies formed on the surface of ancient murals will form colored patches or biofilms on their surface, and some strains will even leave pigments on the surface of ancient murals that are difficult to remove, affecting the aesthetic value of ancient murals. In addition, various biological enzymes produced by microbial metabolism will cause the degradation of the pigment binder in ancient murals, and even corrode the plant fibers in the ground, thereby reducing the adhesion of the pigment layer and the stability of the ground structure.

[0003] The inventor found that the related art of cultural relic protection has at least the following disadvantages:

[0004] Currently, there is no professional degerming equipment for microbial diseases in the cultural heritage protection industry. After discovering similar microbial diseases, protection workers generally directly use soft brushes to remove them or use cotton swabs to remove them. This operation process will cause the microbial propagules to spread and spread in the air, not only posing a potential threat to the health of the operators, but also expanding the pollution range of the microbial propagules to the cultural relics. UTILITY MODEL CONTENT

[0005] The purpose of the utility model includes providing a mural degerming equipment, which can reduce the spread and spread of microorganisms and dust during the cleaning process of cultural relics, reduce environmental pollution, and reduce the adverse effects on the health of operators during the maintenance of cultural relics.

[0006] The embodiment of the utility model can be implemented as follows:

[0007] In a first aspect, the utility model provides a mural degerming equipment for use with a cleaning soft brush, comprising:

[0008] The box, vacuum pump, purification mechanism and negative pressure pipe are all installed in the box, the negative pressure pipe is connected to the vacuum pump through the box, and the vacuum pump is used to generate negative pressure in the lumen of the negative pressure pipe; the negative pressure pipe has an adsorption end outside the box, and the adsorption end is used to face the mural body to form a negative pressure area on the mural body; the purification mechanism is used to purify the gas sucked in through the adsorption end.

[0009] In an optional embodiment, the negative pressure pipe comprises a main pipe body and a negative pressure cover, one end of the main pipe body is installed on the box body, the other end of the main pipe body is connected with the negative pressure cover, and the adsorption end is located on the side of the negative pressure cover away from the main pipe body; the cross-sectional inner contour of the negative pressure cover gradually decreases in the direction from the adsorption end to the main pipe body. The negative pressure cover is made of transparent material, so that the operator can observe the removal of the wall surface microbial colonies in real time, and the distance between the negative pressure cover and the wall painting body.

[0010] Based on the above scheme, the negative pressure cover covers a larger area, and when cleaning the bacterial colonies on the surface of the wall painting body, a large negative pressure area is generated on the corresponding position of the wall painting surface, so that as many bacterial colonies and other substances cleaned by the soft brush as possible can be adsorbed into the negative pressure cover, and then enter the box body through the main pipe body, and then be discharged after being purified by the purification mechanism in the box body, so that the space is not easily polluted, and the operator's health is not easily affected. The negative pressure cover can cover a larger area, and the diameter of the main pipe body can be set to be smaller than the diameter of the negative pressure cover, so that the volume of the main pipe body will not be too large, the space occupied is small, and the shape is easy to adjust.

[0011] In an optional embodiment, the main pipe body is provided as a shaped hose, so that the position of the main pipe body can be adjusted relative to the wall painting body and fixed after adjustment.

[0012] Based on the above scheme, since the distribution areas of the wall painting surface are different, the negative pressure cover generally moves relative to the wall painting surface during cleaning, so as to cover the corresponding area and adsorb the bacterial colonies and other impurities. Therefore, when the position of the negative pressure cover body needs to be adjusted, force is applied to the shaped hose, and the shaped hose can deform under the external force, so as to adjust the position of the negative pressure cover. The operation is convenient and flexible. The shaped hose not only can deform by a certain amount, but also can automatically shape after deformation, that is, the position of the shaped hose is kept in a set shape after adjustment, and will not deform freely, which is beneficial to keeping the stability of the position of the negative pressure cover body.

[0013] In an optional embodiment, the negative pressure pipe further comprises an operation handle, the operation handle is installed at the end of the negative pressure cover, the operation handle is used for the operator to hold, and the operation handle is provided with a first function button for adjusting the pressure or air volume generated by the negative pressure cover port and a second function button for presetting an alarm value relative to the distance of the wall painting body.

[0014] Based on the above scheme, the operator holds the operation handle, which is beneficial to applying force to the negative pressure pipe, so that the main pipe body deforms, the position of the negative pressure cover is adjusted, time and labor are saved.

[0015] In an optional embodiment, an end surface of the negative pressure cover is provided with a distance sensor, the distance sensor is in communication connection with the vacuum pump, and the distance sensor is used to obtain the distance between the adsorption end and the mural body.

[0016] Based on the above scheme, when the negative pressure cover approaches the mural body, the distance sensor obtains the distance between the negative pressure cover and the mural body in real time, and issues a prompt when the distance information obtained by the distance sensor is less than a threshold value, such as issuing sound and light information through an alarm to prompt the operator to adjust the action, so as to avoid the negative pressure cover directly colliding with the mural body, thereby improving the safety during operation. At the same time, after the distance between the negative pressure cover and the mural body is obtained by the distance sensor, the power of the vacuum pump is adjusted according to the distance information, for example, when the distance increases, the power of the vacuum pump increases, and the adsorption force increases, and vice versa, when the distance decreases, the suction force of the vacuum pump decreases, thereby saving energy.

[0017] In an optional embodiment, the box is provided with a purification chamber, the purification chamber stores a purification liquid, one end of the negative pressure pipe is in communication with the purification chamber, and the one end of the negative pressure pipe is below the liquid level of the purification liquid.

[0018] Based on the above scheme, after the impurities such as colonies on the surface of the mural body are adsorbed into the box by the negative pressure pipe, they enter the liquid containing the sterilizing agent, and part of the microbial bodies and spores carried by the gas can be filtered and killed, and a small amount of microorganisms move to the purification mechanism together with the gas and are purified again, thereby improving the purification effect through multiple purification measures.

[0019] In an optional embodiment, the box is provided with a mounting plate and a spoiler, the mounting plate cooperates with the inner wall surface of the box to define a gas outlet, the negative pressure pipe penetrates through the mounting plate and is in sealing cooperation with the mounting plate; the spoiler is installed in the mounting plate and the box, one side of the spoiler is in sealing cooperation with the mounting plate, and the other side of the spoiler has a spacing with the bottom wall of the box, so that a filtering channel is formed between the spoiler and the bottom wall.

[0020] Based on the above scheme, the gas and the colony impurities carried by the negative pressure pipe enter the liquid, and the gas and the colony impurities need to bypass the spoiler to be discharged from the filtering channel under the blockage of the spoiler, and then exit the liquid from the gas outlet and enter the position of the purification mechanism. When the gas moves in the liquid, the path is increased, the time of staying in the liquid is increased, and the purification effect is improved.

[0021] In an optional embodiment, a device chamber is further arranged in the box independently of the purification chamber, the purification chamber is communicated with the device chamber, and the vacuum pump is arranged in the device chamber; and the purification mechanism comprises a HEPA filter film which is arranged in the box and between the purification chamber and the device chamber.

[0022] Based on the above scheme, the HEPA filter film has good filtering effect.

[0023] In an optional embodiment, the device chamber is provided with an air outlet hole, the air outlet hole is provided with a HEPA filter film, and the air outlet end of the vacuum pump is communicated with the air outlet hole.

[0024] Based on the above scheme, the purification effect is further improved by arranging two HEPA filter films.

[0025] In an optional embodiment, the end face where the suction end of the negative pressure pipe is located is provided with a buffer layer.

[0026] Based on the above scheme, by arranging the buffer layer at the front end of the negative pressure cover, in the case of misoperation, the buffer layer of the negative pressure cover contacts the mural body, the buffer layer has the effect of buffering and absorbing energy, and the mural body can be prevented from being subjected to rigid collision and damage.

[0027] The mural sterilization equipment provided by the embodiment of the utility model has the following beneficial effects:

[0028] In summary, the mural sterilization equipment provided by the embodiment utilizes the soft brush to clean the bacterial colonies on the mural body, aligns the suction end of the negative pressure pipe with the surface of the mural body to be cleaned, starts the vacuum pump first, adjusts the suction force of the vacuum pump, and makes the suction end always generate a local negative pressure area to adsorb and process the bacterial colonies falling from the surface of the mural body. In this way, the bacterial colonies are not easy to spread everywhere, pollute the air, and adversely affect the health of the operator. Moreover, the bacterial colonies are not easy to spread, so the pollution range of the microorganism propagules on cultural relics is not enlarged. The bacterial colonies and impurities adsorbed by the negative pressure pipe enter the box and can be directly discharged after being purified by the purification mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as limiting the scope, and for those skilled in the art, other related drawings can be obtained without creative labor on the basis of these drawings.

[0030] Figure 1A structure schematic diagram of the mural sterilization equipment is provided.

[0031] Icon:

[0032] 100-positioning frame; 200-mural body; 300-box body; 310-purification chamber; 320-purification liquid; 330-mounting plate; 340-damper plate; 350-equipment chamber; 400-vacuum pump; 500-purification mechanism; 510-HEPA filter membrane; 600-negative pressure pipe; 610-main pipe body; 620-negative pressure cover; 700-distance sensor. DETAILED DESCRIPTION

[0033] In the prior art, when cleaning the bacterial colony impurities on the mural surface, a soft brush or a cotton swab is generally used for cleaning. During the cleaning process, for example, when the soft brush sweeps the mural surface, the bacterial colony falls from the mural surface and spreads everywhere, which not only causes adverse effects on the health of the operator, but also expands the pollution range of the microorganism propagules to the cultural relics, and has great disadvantages.

[0034] In view of this, the designer provides a mural sterilization equipment which can adsorb the bacterial colony generated during the cleaning of the mural surface, improve the phenomenon of the bacterial colony spreading everywhere, and is not easy to cause adverse effects on the health of the operator and expand the pollution range.

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0037] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0038] In the description of the utility model, it needs to be explained that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0039] In addition, if the terms "first", "second" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0041] Please refer to Figure 1 In this embodiment, the mural sterilization equipment is used in cooperation with the cleaning soft brush, which comprises a box body 300, a vacuum pump 400, a purification mechanism 500 and a negative pressure pipe 600. The vacuum pump 400, the purification mechanism 500 and the negative pressure pipe 600 are all installed on the box body 300, the negative pressure pipe 600 is connected to the vacuum pump 400 through the box body 300, and the vacuum pump 400 is used to generate negative pressure in the lumen of the negative pressure pipe 600. The negative pressure pipe 600 has an adsorption end outside the box body 300, and the adsorption end is used to face the mural body 200 to form a negative pressure area on the mural body 200. The purification mechanism 500 is used to purify the gas sucked through the adsorption end.

[0042] Based on the above, the working mode of the mural sterilization equipment provided in this embodiment includes, for example:

[0043] Before the soft brush is used to clean the colonies on the mural body 200, the adsorption end of the negative pressure pipe 600 is aligned with the surface to be cleaned of the mural body 200, the vacuum pump 400 is started first, the suction force of the vacuum pump 400 is adjusted, the adsorption end always generates a local negative pressure area, and the colonies falling off the surface of the mural body 200 can be adsorbed and treated. Then the surface of the mural body 200 is cleaned with the soft brush. In this way, after the colonies are brushed off the surface of the mural body 200, they are directly adsorbed into the negative pressure pipe 600 by the adsorption end, are not easy to spread and spread everywhere, are not easy to pollute the air, and are not easy to adversely affect the health of the operator. Moreover, the colonies are not easy to spread, so the pollution range of the microorganism propagules to cultural relics will not be enlarged. The colonies and impurities adsorbed by the negative pressure pipe 600 enter the box body 300 and can be directly discharged after being purified by the purification mechanism 500.

[0044] It should be understood that the mural sterilization device provided in the embodiment can also include a positioning frame for positioning the mural body. The bottom side of the mural body is in contact with the groove on the positioning frame, the top side is in contact with the side wall of the positioning frame, the mural body is in an inclined state, and the position is stable and reliable.

[0045] The following embodiments illustrate the details of the mural sterilization device provided in the present application by way of example.

[0046] In the embodiment, the negative pressure pipe 600 can include a main pipe body 610 and a negative pressure cover 620, which can be provided in an integrated structure, facilitating processing and manufacturing, and reducing the possibility of leakage. One end of the main pipe body 610 is installed in the box 300, the other end of the main pipe body 610 is connected with the negative pressure cover 620, and the adsorption end is located on the side of the negative pressure cover 620 away from the main pipe body 610. The cross-sectional inner contour of the negative pressure cover 620 gradually decreases in the direction from the adsorption end to the main pipe body 610. For example, the negative pressure cover 620 is provided in a conical cylindrical shape, the negative pressure adsorption area is large, the coverage area is large, and the adsorption efficiency is improved.

[0047] It should be understood that the negative pressure cover 620 is provided in a gradually changing structure, the covered area is large, and when the bacterial colonies on the surface of the mural body 200 are cleaned, a large negative pressure area is generated at the corresponding position on the mural surface, so that as many bacterial colonies and other substances cleaned by the soft brush as possible can be adsorbed into the negative pressure cover 620, and then enter the box 300 through the main pipe body 610, and be discharged after being purified by the purification mechanism 500 in the box 300, so that the space is not easily contaminated and the health of the operator is not easily affected. The negative pressure cover 620 can cover a large area, and the diameter of the main pipe body 610 can be smaller than that of the negative pressure cover 620. In this way, the volume of the main pipe body 610 will not be too large, the space occupied will be small, and the shape can be adjusted.

[0048] In the embodiment, the main pipe body 610 can be provided in a shaped hose, so that the position of the main pipe body 610 can be adjusted relative to the positioning frame 100 and fixed after adjustment. The shaped hose can be a serpentine tube or a corrugated tube, etc. Since the mural surface is distributed in different areas, the negative pressure cover 620 will generally move relative to the mural surface during cleaning, so as to be covered in the corresponding area for adsorption and treatment of bacterial colonies and other impurities. Therefore, when the position of the negative pressure cover 620 needs to be adjusted, force is applied to the shaped hose, and the shaped hose can deform under the external force, so as to adjust the position of the negative pressure cover 620, which is convenient and flexible to operate. The shaped hose not only can deform by a certain amount, but also can automatically shape after deformation, that is, the position of the shaped hose is kept in a set shape after adjustment, and will not deform freely, which is beneficial to maintaining the stability of the position of the negative pressure cover 620.

[0049] In the embodiment, the negative pressure pipe 600 can further include an operation handle, which is installed on the negative pressure cover 620 and used for the operator to hold and adjust the position of the negative pressure cover 620 relative to the mural body 200. The operator holds the operation handle, which is beneficial to apply force to the negative pressure pipe 600, so that the main pipe body 610 is deformed, the position of the negative pressure cover 620 is adjusted, time and labor are saved. In addition, the operation handle can be provided with a first function button for adjusting the pressure or air volume generated by the port of the negative pressure cover 620 and a second function button for presetting an alarm value of the distance relative to the mural body 200. The first function button is electrically connected with the vacuum pump.

[0050] In the embodiment, the end surface of the negative pressure cover 620 is provided with a distance sensor 700, which is in communication connection with the control module of the vacuum pump 400 and used for obtaining the distance between the adsorption end and the mural body 200. Meanwhile, an alarm can be installed on the negative pressure cover 620 and in communication connection with the distance sensor 700. The alarm can be a horn or a lamp body, etc. The second function button is electrically connected with the alarm. When the negative pressure cover 620 approaches the mural body 200, the distance sensor 700 obtains the distance between the negative pressure cover 620 and the mural body 200 in real time and sends a prompt when the distance information obtained by the distance sensor 700 is less than a threshold value, for example, sends sound and light information through the alarm to prompt the operator to adjust the action, so as to avoid the negative pressure cover 620 directly colliding with the mural body 200 and improve the safety in the operation process. Meanwhile, after the distance between the negative pressure cover 620 and the mural body 200 is obtained by the distance sensor 700, the power of the vacuum pump 400 is adjusted according to the distance information, for example, when the distance increases, the power of the vacuum pump 400 increases and the adsorption force is enhanced, and vice versa, when the distance decreases, the suction force of the vacuum pump 400 decreases and energy is saved.

[0051] In the embodiment, the box body 300 is provided with a purification chamber 310, the purification chamber 310 stores a purification liquid 320, one end of the negative pressure pipe 600 is communicated with the purification chamber 310, and the one end of the negative pressure pipe 600 is located below the liquid level of the purification liquid 320. After the bacteria and other impurities cleaned from the surface of the mural body 200 are adsorbed into the box body 300 by the negative pressure pipe 600, they enter the liquid containing the sterilizing agent, part of the microorganism and spores carried in the gas can be filtered and killed, and a small amount of microorganisms move to the purification mechanism 500 together with the gas and are purified again, multiple purification measures are adopted to improve the purification effect.

[0052] Please refer to Figure 1Optionally, the box 300 is provided with a mounting plate 330 and a spoiler plate 340. The mounting plate 330 is parallel to the bottom wall of the box 300. The mounting plate 330 cooperates with the inner wall of the box 300 to define a gas outlet on the right side of the mounting plate 330. The negative pressure pipe 600 penetrates the mounting plate 330 and is in sealing cooperation with the mounting plate 330. The position of the negative pressure pipe 600 is stable and reliable. The spoiler plate 340 is installed in the box 300 and the mounting plate 330. The spoiler plate 340 is vertically arranged. The top side of the spoiler plate 340 is in sealing cooperation with the mounting plate 330. The bottom side of the spoiler plate 340 opposite to the top side has a spacing with the bottom wall of the box 300, so that a filtering channel is formed between the spoiler plate 340 and the bottom wall.

[0053] It should be understood that the gas and the colony impurities carried by the gas are adsorbed into the liquid from the negative pressure pipe 600. Under the blockage of the spoiler plate 340, the gas and the colony impurities need to bypass the spoiler plate 340 and then be discharged from the filtering channel, and then be discharged from the gas outlet to the position where the purification mechanism 500 is located. When the gas moves in the liquid, the path is increased, the time of staying in the liquid is increased, and the purification effect is improved.

[0054] In the embodiment, the box 300 is further provided with a device chamber 350 independent of the purification chamber 310. The purification chamber 310 is in communication with the device chamber 350. The vacuum pump 400 is arranged in the device chamber 350. The purification mechanism 500 includes a HEPA filter membrane 510. The HEPA filter membrane 510 is arranged in the box 300 and located between the purification chamber 310 and the device chamber 350. The HEPA filter membrane 510 has good filtering effect. It should be understood that the HEPA filter membrane 510 is a known structure. In the embodiment, the specific description is not given to avoid repetition.

[0055] Further, the device chamber 350 is provided with an air outlet hole. The HEPA filter membrane 510 is arranged at the air outlet hole. The air outlet end of the vacuum pump 400 is in communication with the air outlet hole. By arranging two HEPA filter membranes 510, the purification effect is further improved.

[0056] Optionally, the end face where the adsorption end of the negative pressure pipe 600 is located is provided with a buffer layer. By arranging the buffer layer, the buffer layer can be arranged at the front end of the negative pressure cover 620. In the case of misoperation, the buffer layer of the negative pressure cover 620 contacts the mural body 200. The buffer layer has a buffer energy absorption effect, which can avoid rigid collision of the mural body 200 and reduce damage to the mural body 200.

[0057] It should be understood that the buffer layer can be a rubber layer.

[0058] The mural sterilization equipment provided by the embodiment utilizes a soft brush or the like to clean the bacterial colonies on the surface of the mural body 200, and the brushed-off bacterial colonies are directly sucked to the purification mechanism 500 by the negative pressure pipe 600, discharged after purification, and difficult to contaminate the air, harm the health of the operator, and expand the contamination range.

[0059] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which shall be covered within the protection scope of the present application.

Claims

1. A mural sterilization device, used in conjunction with a cleaning soft brush, characterized in that, include: The enclosure (300), vacuum pump (400), purification mechanism (500), and negative pressure pipe (600) are all installed in the enclosure (300). The negative pressure pipe (600) is connected to the vacuum pump (400) through the enclosure (300). The vacuum pump (400) is used to generate negative pressure in the cavity of the negative pressure pipe (600). The negative pressure pipe (600) has an adsorption end located outside the enclosure (300). The adsorption end is used to face the mural body (200) to form a negative pressure area on the mural body (200). The purification mechanism (500) is used to purify the gas drawn in through the adsorption end. The housing (300) is provided with a purification chamber (310), which stores purification liquid (320). One end of the negative pressure pipe (600) is connected to the purification chamber (310), and one end of the negative pressure pipe (600) is located below the liquid surface of the purification liquid (320). The housing (300) is provided with an mounting plate (330) and a baffle plate (340). The mounting plate (330) fits with the inner wall of the housing (300) to define a gas outlet. The negative pressure pipe (600) passes through the mounting plate (330) and is sealed with the mounting plate (330). The baffle plate (340) is installed in the housing (300) and the mounting plate (330). One side of the baffle plate (340) is sealed with the mounting plate (330), and the other side of the baffle plate (340) has a gap with the bottom wall of the housing (300) so that a filter channel is formed between the baffle plate (340) and the bottom wall.

2. The mural sterilization device according to claim 1, characterized in that: The negative pressure tube (600) includes a main body (610) and a negative pressure cover (620). One end of the main body (610) is installed in the box (300), and the other end of the main body (610) is connected to the negative pressure cover (620). The adsorption end is located on the side of the negative pressure cover (620) away from the main body (610). The inner contour of the cross-section of the negative pressure cover (620) gradually decreases in the direction from the adsorption end to the main body (610).

3. The mural sterilization device according to claim 2, characterized in that: The main tube (610) is configured as a fixed flexible tube so that the position of the main tube (610) can be adjusted relative to the mural body and remain fixed after adjustment.

4. The mural sterilization device according to claim 3, characterized in that: The negative pressure pipe (600) also includes an operating handle, which is installed at the end of the negative pressure cover (620). The operating handle is for the operator to hold, and the operating handle is equipped with a first function button for adjusting the pressure or air volume generated at the port of the negative pressure cover (620) and a second function button for setting an alarm value relative to the distance of the mural body (200).

5. The mural sterilization device according to claim 2, characterized in that: A distance sensor (700) is provided on the end face of the negative pressure cover (620). The distance sensor (700) is communicatively connected to the vacuum pump (400). The distance sensor (700) is used to obtain the distance between the adsorption end and the mural body (200).

6. The mural sterilization device according to claim 1, characterized in that: The housing (300) also has an independent equipment chamber (350) separate from the purification chamber (310). The purification chamber (310) is connected to the equipment chamber (350). The vacuum pump (400) is located in the equipment chamber (350). The purification mechanism (500) includes a HEPA filter membrane (510). The HEPA filter membrane (510) is installed in the housing (300) and located between the purification chamber (310) and the equipment chamber (350).

7. The mural sterilization device according to claim 6, characterized in that: The equipment chamber (350) is provided with an air outlet, and a HEPA filter membrane (510) is provided at the air outlet. The air outlet end of the vacuum pump (400) is connected to the air outlet.

8. The mural sterilization device according to claim 1, characterized in that: A buffer layer is provided on the end face where the adsorption end of the negative pressure tube (600) is located.

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