Mural degerming equipment

Abstract

The embodiment of the invention 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 invention relates to the technical field of cultural relics protection, and in particular to a mural sterilization device. Background Art

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

[0003] The inventors have found that the cultural relics protection methods of the related art have at least the following disadvantages:

[0004] At present, there is no professional sterilization equipment for microbial diseases in the cultural heritage protection industry. When conservation workers find similar microbial diseases, they usually use a soft brush to sweep them away or use a cotton swab to remove them. This operation process will cause a large number of microbial propagules to spread and spread in the air, which not only poses a potential threat to the health of operators, but also expands the scope of contamination of cultural relics by microbial propagules. Summary of the invention

[0005] The purpose of the present invention includes providing a mural sterilization device, which can reduce the diffusion and spread of microorganisms and dust during the cleaning process of cultural relics, reduce pollution to the environment, and reduce the adverse effects on the health of operators during cultural relics maintenance.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] In a first aspect, the present invention provides a mural sterilization device for use with a cleaning soft brush, comprising:

[0008] Box body, vacuum pump, purification mechanism and negative pressure pipe. The vacuum pump, purification mechanism and negative pressure pipe are all installed in the box body. The negative pressure pipe is connected to the vacuum pump through the box body. The vacuum pump is used to generate negative pressure in the tube cavity of the negative pressure pipe; the negative pressure pipe has an adsorption end located outside the box body, 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 inhaled through the adsorption end.

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

[0010] Based on the above scheme, the negative pressure hood covers a larger area. When cleaning the colonies on the surface of the mural, the negative pressure area generated at the corresponding position on the surface of the mural is large, so that as many colonies and other substances cleaned with a soft brush as possible can be adsorbed into the negative pressure hood, and then enter the box through the main pipe, and are discharged after being purified by the purification mechanism in the box, which is not easy to pollute the space and affect the health of the operator. The negative pressure hood can cover a larger area, and the diameter of the main pipe can be set to be smaller than the diameter of the negative pressure hood. In this way, the volume of the main pipe will not be too large, and the space occupied is small, which is conducive to adjusting the shape.

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

[0012] Based on the above scheme, since the surface of the mural is distributed in different areas, the negative pressure hood will generally move relative to the surface of the mural during cleaning, so that the hood is set in the corresponding area to adsorb impurities such as bacteria. In this way, when it is necessary to adjust the position of the negative pressure hood body, force is applied to the shaping hose, and the shaping hose can produce a certain deformation under external force, thereby adjusting the position of the negative pressure hood, which is convenient and flexible to operate. The shaping hose can not only produce a certain amount of deformation, but also automatically shape after deformation, that is, after the position of the shaping hose is adjusted, it will remain in the set shape and will not deform freely, which is conducive to maintaining the stability of the position of the negative pressure hood body.

[0013] In an optional embodiment, the negative pressure tube also includes an operating handle, which is installed at the end of the negative pressure hood, and is used for an operator to hold. The operating handle is equipped with a first function button for adjusting the pressure or air volume generated by the negative pressure hood port and a second function button for presetting an alarm value relative to the mural body.

[0014] Based on the above solution, the operator holds the operating handle to apply force to the negative pressure tube, thereby causing the main tube body to deform, making it easier to adjust the position of the negative pressure cover, saving time and effort.

[0015] In an optional embodiment, a distance sensor is provided on the end surface of the negative pressure cover, the distance sensor is communicatively connected 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 hood approaches the mural body, the distance sensor obtains the distance between the negative pressure hood 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, such as sending sound and light information through an alarm, prompting the operator to adjust the action to avoid the negative pressure hood directly colliding with the mural body, thereby improving the safety during the operation. At the same time, after the distance between the negative pressure hood 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. Conversely, when the distance decreases, the suction force of the vacuum pump decreases, thereby saving energy.

[0017] In an optional embodiment, the housing is provided with a purification chamber, in which purification liquid is stored, one end of the negative pressure tube is connected to the purification chamber, and one end of the negative pressure tube is located below the liquid surface of the purification liquid.

[0018] Based on the above solution, the negative pressure pipe adsorbs impurities such as colonies cleaned from the surface of the mural body into the box, and then enters the liquid containing the bactericide. Some microorganisms and spores carried in the gas can be filtered and killed. A small amount of microorganisms move with the gas to the purification mechanism and are purified again. Multiple purification measures are taken to improve the purification effect.

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

[0020] Based on the above scheme, the gas adsorbed from the negative pressure tube and the bacterial impurities carried enter the liquid. Under the obstruction of the spoiler, the gas and bacterial impurities need to bypass the spoiler and be discharged from the filter channel, and then leave the liquid from the gas outlet and enter the location of the purification mechanism. When the gas moves in the liquid, the path increases, the time it stays in the liquid increases, and the purification effect is improved.

[0021] In an optional embodiment, an equipment chamber independent of the purification chamber is further provided in the casing, the purification chamber is connected to the equipment chamber, and the vacuum pump is arranged in the equipment chamber; the purification mechanism includes a HEPA filter membrane, and the HEPA filter membrane is installed in the casing and located between the purification chamber and the equipment chamber.

[0022] Based on the above scheme, the filtering effect of the HEPA filter membrane is good.

[0023] In an optional embodiment, the equipment chamber is provided with an air outlet, a HEPA filter membrane is provided at the air outlet, and the air outlet end of the vacuum pump is connected to the air outlet.

[0024] Based on the above solution, two HEPA filter membranes are provided to further improve the purification effect.

[0025] In an optional embodiment, a buffer layer is provided on the end surface of the negative pressure tube where the adsorption end is located.

[0026] Based on the above scheme, by setting a buffer layer, the buffer layer can be set 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 a buffering and energy-absorbing effect, which can prevent the mural body from being subjected to rigid collision and reduce damage to the mural body.

[0027] The beneficial effects of the mural sterilization device provided by the embodiment of the present invention include:

[0028] In summary, the mural sterilization equipment provided in this embodiment uses a soft brush to clean the colonies on the mural body. The adsorption end of the negative pressure tube is aligned with the surface of the mural body to be cleaned, and the vacuum pump is started first. The suction force of the vacuum pump is adjusted so that the adsorption end always produces a local negative pressure area, and the colonies brushed off the surface of the mural body can be adsorbed. In this way, after the colonies are brushed off, it is not easy to spread around, pollute the air, and cause adverse effects on the health of the operator. In addition, the colonies are not easy to spread, so as not to expand the scope of contamination of cultural relics by large microbial propagules. The colony impurities adsorbed by the negative pressure tube enter the box and can be directly discharged after purification by the purification mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1This is a schematic diagram of the structure of the mural sterilization equipment provided in this embodiment.

[0031] icon:

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

[0033] In the prior art, when cleaning bacterial impurities and the like on the surface of murals, soft brushes or cotton swabs are generally used for cleaning. During the cleaning process, for example, when a soft brush is used to sweep the surface of the mural, bacterial colonies fall from the surface of the mural and are easily spread everywhere, which not only has an adverse effect on the health of the operators, but also expands the scope of contamination of cultural relics by microbial reproductive bodies, posing a major disadvantage.

[0034] In view of this, the designer provides a mural sterilization device that can absorb the colonies produced in the process of cleaning the surface of the mural, improve the phenomenon of the spread of the colonies, and is not likely to cause adverse effects on the health of the operator or expand the scope of pollution.

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0040] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0041] Please combine Figure 1 In this embodiment, the mural sterilization device is used in conjunction with a cleaning soft brush, and includes a box 300, a vacuum pump 400, a purification mechanism 500, and a negative pressure tube 600. The vacuum pump 400, the purification mechanism 500, and the negative pressure tube 600 are all installed in the box 300. The negative pressure tube 600 is connected to the vacuum pump 400 through the box 300. The vacuum pump 400 is used to generate negative pressure in the tube cavity of the negative pressure tube 600. The negative pressure tube 600 has an adsorption end located outside the box 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 inhaled through the adsorption end.

[0042] Based on the above, the working methods of the mural sterilization device provided in this embodiment include, for example:

[0043] Before using a soft brush to clean the colonies on the mural body 200, align the adsorption end of the negative pressure tube 600 with the surface of the mural body 200 to be cleaned, start the vacuum pump 400 first, adjust the suction force of the vacuum pump 400, so that the adsorption end always produces a local negative pressure area, and can adsorb the colonies brushed off the surface of the mural body 200. Then use softening to clean the surface of the mural body 200. In this way, after the colonies are brushed off the surface of the mural body 200, they are directly adsorbed into the negative pressure tube 600 by the adsorption end, and are not easy to spread around, pollute the air, and have an adverse effect on the health of the operator. In addition, the colonies are not easy to spread, so as not to expand the scope of contamination of cultural relics by large microbial propagules. The colony impurities adsorbed by the negative pressure tube 600 enter the box 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 this embodiment may also include a positioning frame for positioning the mural body. The bottom side of the mural body contacts the groove on the positioning frame, and the top side contacts the side wall of the positioning frame. The mural body is inclined and the position is stable and reliable.

[0045] The following embodiments illustrate the details of the mural sterilization equipment provided in this application by way of examples.

[0046] In this embodiment, optionally, the negative pressure tube 600 includes a main body 610 and a negative pressure cover 620, and the two can be set as an integrated structure, which is convenient for processing and manufacturing, reduces seams, and is not prone to leakage. One end of the main body 610 is installed on the box body 300, and the other end of the main body 610 is connected to the negative pressure cover 620, and 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. For example, the negative pressure cover 620 is set to a conical cylinder, with a large negative pressure adsorption area and a large coverage area, which improves the adsorption efficiency.

[0047] It should be understood that the negative pressure cover 620 is set as a gradual structure, and the cover area is relatively large. When the colonies on the surface of the mural body 200 are cleaned, the negative pressure area generated at the corresponding position on the mural surface is large, so that as many 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 body 610, and are discharged after being purified by the purification mechanism 500 in the box 300, which is not easy to pollute the space and affect the health of the operator. The negative pressure cover 620 can cover a larger area, and the diameter of the main body 610 can be set to be smaller than the diameter of the negative pressure cover 620. In this way, the volume of the main body 610 will not be too large, and the space occupied is small, which is conducive to adjusting the shape.

[0048] In this embodiment, optionally, the main body 610 is set as a shaping hose, so that the position of the main body 610 can be adjusted relative to the positioning frame 100 and remain fixed after adjustment. The shaping hose can be a serpentine tube or a bellows, etc. Due to the different distribution areas of the mural surface, the negative pressure cover 620 will generally move relative to the mural surface during cleaning, so that the cover is set in the corresponding area to adsorb impurities such as bacterial colonies. In this way, when it is necessary to adjust the position of the negative pressure cover 620 body, force is applied to the shaping hose, and the shaping hose can produce a certain deformation under external force, thereby adjusting the position of the negative pressure cover 620, and the operation is convenient and flexible. The shaping hose can not only produce a certain amount of deformation, but also can be automatically shaped after deformation, that is, after the position of the shaping hose is adjusted, it remains in the set shape and will not deform freely, which is conducive to maintaining the stability of the position of the negative pressure cover 620 body.

[0049] In this embodiment, the negative pressure tube 600 may also include an operating handle, which is mounted on the negative pressure cover 620. The operating handle is used for the operator to hold in order to adjust the position of the negative pressure cover 620 relative to the mural body 200. The operator holds the operating handle, which facilitates the application of force to the negative pressure tube 600, thereby deforming the main body 610, facilitating the adjustment of the position of the negative pressure cover 620, and saving time and effort. In addition, 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 relative to the mural body 200 may be installed on the operating handle. The first function button is electrically connected to the vacuum pump.

[0050] In this embodiment, optionally, a distance sensor 700 is provided on the end face of the negative pressure cover 620, and the distance sensor 700 is connected to the control module of the vacuum pump 400 in communication, and the distance sensor 700 is used to obtain the distance between the adsorption end and the mural body 200. At the same time, an alarm connected to the distance sensor 700 in communication can be installed on the negative pressure cover 620, and the alarm can be a speaker or a lamp body, etc., and the second function button is electrically connected to 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 issues a prompt when the distance information obtained by the distance sensor 700 is less than a threshold value, such as sending sound and light information through the alarm, prompting the operator to adjust the action to avoid the negative pressure cover 620 directly colliding with the mural body 200, thereby improving the safety during the operation. At the same time, 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. Conversely, when the distance decreases, the suction force of the vacuum pump 400 decreases, saving energy.

[0051] In this embodiment, the box 300 is optionally provided with a purification chamber 310, in which a purification liquid 320 is stored, and one end of the negative pressure tube 600 is connected to the purification chamber 310, and one end of the negative pressure tube 600 is located below the liquid surface of the purification liquid 320. After the negative pressure tube 600 adsorbs the impurities such as the colonies cleaned from the surface of the mural body 200 into the box 300, it enters the liquid containing the bactericide, and some microbial cells and spores carried in the gas can be filtered and killed, and a small amount of microorganisms move to the purification mechanism 500 with the gas and are purified again, and multiple purification measures are taken to improve the purification effect.

[0052] Please combine Figure 1Optionally, a mounting plate 330 and a spoiler 340 are provided in the box body 300. The mounting plate 330 is provided parallel to the bottom wall of the box body 300. The mounting plate 330 cooperates with the inner wall surface of the box body 300 to define a gas outlet on the right side of the mounting plate 330. The negative pressure pipe 600 passes through the mounting plate 330 and is sealed with the mounting plate 330. The position of the negative pressure pipe 600 is stable and reliable. The spoiler 340 is installed in the mounting plate 330 and the box body 300. The spoiler 340 is vertically arranged. The top side of the spoiler 340 is sealed with the mounting plate 330. There is a gap between the bottom side of the spoiler 340 opposite to the top side and the bottom wall of the box body 300, so that a filtering channel is formed between the spoiler 340 and the bottom wall.

[0053] It should be understood that the gas adsorbed from the negative pressure tube 600 and the bacterial impurities carried enter the liquid. Under the obstruction of the spoiler 340, the gas and bacterial impurities need to bypass the spoiler 340 and be discharged from the filter channel, and then leave the liquid from the gas outlet and enter the location of the purification mechanism 500. When the gas moves in the liquid, the path increases, the time it stays in the liquid increases, and the purification effect is improved.

[0054] In this embodiment, optionally, an equipment chamber 350 independent of the purification chamber 310 is further provided in the housing 300, the purification chamber 310 is connected to the equipment chamber 350, and the vacuum pump 400 is provided in the equipment chamber 350; the purification mechanism 500 includes a HEPA filter membrane 510, which is installed in the housing 300 and located between the purification chamber 310 and the equipment chamber 350. The HEPA filter membrane 510 has a good filtering effect. It should be understood that the HEPA filter membrane 510 is an existing well-known structure, and in order to avoid repeated description, it is not specifically introduced in this embodiment.

[0055] Furthermore, the equipment chamber 350 is provided with an air outlet, and a HEPA filter membrane 510 is provided at the air outlet, and the air outlet end of the vacuum pump 400 is connected to the air outlet. By providing two HEPA filter membranes 510, the purification effect is further improved.

[0056] In this embodiment, a buffer layer is optionally provided on the end surface where the adsorption end of the negative pressure tube 600 is located. By providing the buffer layer, the buffer layer can be provided 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 buffering energy absorption effect, which can prevent the mural body 200 from being subjected to rigid collision and reduce damage to the mural body 200.

[0057] It should be understood that the buffer layer may be a rubber layer or the like.

[0058] When the mural sterilization equipment provided in this embodiment uses a soft brush or other tools to clean the bacterial colonies on the surface of the mural body 200, the brushed-off bacterial colonies are directly adsorbed by the negative pressure tube 600 to the purification mechanism 500 and discharged after purification, which is not easy to pollute the air, damage the health of the operator, or expand the scope of pollution.

[0059] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A mural sterilization device for use with a soft cleaning brush, characterized in that: include: A box (300), a vacuum pump (400), a purification mechanism (500) and a negative pressure tube (600); the vacuum pump (400), the purification mechanism (500) and the negative pressure tube (600) are all installed on the box (300); the negative pressure tube (600) is connected to the vacuum pump (400) through the box (300); the vacuum pump (400) is used to generate negative pressure in the tube cavity of the negative pressure tube (600); the negative pressure tube (600) has an adsorption end located outside the box (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 in through the adsorption end.

2. The mural sterilization device according to claim 1 is characterized in that: The negative pressure tube (600) comprises a main body (610) and a negative pressure cover (620), one end of the main body (610) is mounted on the box body (300), the other end of the main body (610) is connected to the negative pressure cover (620), and 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 is characterized in that: The main pipe body (610) is configured as a shaped hose so that the position of the main pipe body (610) can be adjusted relative to the mural body and remains fixed after adjustment.

4. The mural sterilization device according to claim 3 is characterized in that: The negative pressure tube (600) also includes an operating handle, which is installed at the end of the negative pressure cover (620) and is used for an operator to hold. The operating handle is installed 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 relative to the distance of the mural body (200).

5. The mural sterilization device according to claim 2 is characterized in that: The end surface of the negative pressure cover (620) is provided with a distance sensor (700), and the distance sensor (700) is communicatively connected with the vacuum pump (400), and 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 is characterized in that: The box body (300) is provided with a purification chamber (310), and the purification liquid (320) is stored in the purification chamber (310). One end of the negative pressure tube (600) is connected to the purification chamber (310), and one end of the negative pressure tube (600) is located below the liquid surface of the purification liquid (320).

7. The mural sterilization device according to claim 6 is characterized in that: A mounting plate (330) and a spoiler (340) are arranged in the box body (300); the mounting plate (330) cooperates with the inner wall surface of the box body (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 spoiler (340) is installed in the mounting plate (330) and the box body (300); one side of the spoiler (340) is sealed with the mounting plate (330), and a distance is provided between the other side of the spoiler (340) and the bottom wall of the box body (300), so that a filtering channel is formed between the spoiler (340) and the bottom wall.

8. The mural sterilization device according to claim 6 is characterized in that: The housing (300) is also provided with an equipment chamber (350) independent of the purification chamber (310); the purification chamber (310) is connected to the equipment chamber (350); the vacuum pump (400) is arranged in the equipment chamber (350); the purification mechanism (500) comprises a HEPA filter membrane (510); the HEPA filter membrane (510) is installed in the housing (300) and is located between the purification chamber (310) and the equipment chamber (350).

9. The mural sterilization device according to claim 8, characterized in that: The equipment chamber (350) is provided with an air outlet, a HEPA filter membrane (510) is provided at the air outlet, and the air outlet end of the vacuum pump (400) is connected to the air outlet.

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

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