CN215194016U

CN215194016U - Low-temperature plasma subway disinfection and sterilization device

Info

Publication number: CN215194016U
Application number: CN202121010513.2U
Authority: CN
Inventors: 赵乾; 赵武; 于淼; 郭鑫; 张凯; 陈领; 聂志浩; 周峻羽
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-12-17
Anticipated expiration: 2031-05-12

Abstract

The utility model discloses a low-temperature plasma subway disinfection and sterilization device, which comprises a tubular shell, a plasma spray head connected with the front end of the tubular shell, a discharge assembly arranged in the plasma spray head and a power supply assembly for supplying power to the plasma spray head; the power supply assembly comprises a power supply and a high-voltage generator which are sequentially arranged in the tubular shell from top to bottom; the discharge assembly comprises a discharge plate and a plurality of discharge electrodes fixed on the discharge plate; the bottom of the plasma nozzle is provided with a plurality of through holes matched with the positions and the number of the discharge electrodes, and the end parts of the discharge electrodes penetrate out of the plasma nozzle through the through holes; the power supply, the high voltage generator and the discharge plate are electrically connected in sequence. The low-temperature plasma subway disinfection and sterilization device can provide low-temperature plasma with stable operation; the discharge electrodes are arranged on the discharge plate and distributed equidistantly, so that a large-area uniform low-temperature plasma discharge area can be generated, the purification effect is good, and the efficiency is high.

Description

Low-temperature plasma subway disinfection and sterilization device

Technical Field

The utility model belongs to the technical field of sterilization, disinfection or deodorization of air, relate to and use low temperature plasma technique to carry out sterilization, disinfection and deodorization of air, concretely relates to low temperature plasma subway sterilization apparatus.

Background

With the continuous development of urban rail transit lands, subways become the first choice vehicles for people to go out daily, so the sanitation and safety of the subways are directly related to the sanitation and safety of passengers. People flow densely on the subway, air fluidity is weak, and timing disinfection treatment is needed. At present, the disinfection modes mainly applied to the living environment mainly comprise: (1) sterilizing with the disinfectant, and sterilizing germs on the surface of the environment or objects with the disinfectant. Common disinfectant is 84 disinfectant, potassium permanganate, peroxyacetic acid and the like, but in use, the disinfectant is not thoroughly sterilized, the disinfecting effect is influenced, potential safety hazards exist in the storage process, and the human body is possibly injured; (2) ultraviolet ray disinfection, disinfection by the photochemical transformation of ultraviolet ray. The wavelength range of the ultraviolet rays is 200-275 nm, wherein the wave band with the strongest sterilization effect is 250-270 nm. The ultraviolet lamp used for ultraviolet disinfection and sterilization is a high-ozone ultraviolet lamp, and the ultraviolet lamp can generate ozone at the same time, thereby playing a role in sterilization. However, ultraviolet radiation energy is low, penetration is weak, only microorganisms directly irradiated can be killed, and areas which cannot be irradiated cannot be disinfected. Therefore, it is necessary to sufficiently expose the sterilized site to ultraviolet rays during sterilization. A disinfection gun that disinfects by ultraviolet light alone is not suitable for disinfection of most environments and objects. Moreover, exposure to uv light may cause changes in redness, pain, desquamation, etc. If irradiated for a long time, it may cause canceration of the skin and the occurrence of tumors of the skin.

The low-temperature plasma technology is a technology which can be applied to powerful sterilization, purification and deodorization of air, and is a cross comprehensive technology integrating physics, chemistry, biology and environmental science. The technology has the obvious characteristics of having physical effect, chemical effect and biological effect on pollutants, and has the obvious advantages of low energy consumption, high efficiency, no secondary pollution and the like. The plasma is generated between two electrodes, the gas between the electrodes is broken down to form plasma, the plasma is ionized gas which contains a large amount of electrons, ions and free radicals and is electrically neutral to the outside, and due to the unique physical and chemical properties of the plasma, the plasma can be used for realizing the effects of modifying the surface of an object, cleaning the surface, grafting new materials and sterilizing lamps on the surface. Tests have also demonstrated that: the plasma discharge can be used for quickly killing bacteria, when the discharge power is smaller, the temperature of the plasma is very low, the plasma can be in contact with the skin of a human body, the skin cannot be burnt, and seamless sterilization and disinfection can be performed on some fine equipment.

However, the currently commonly used plasma beam sterilization equipment is usually large in size, is not suitable for carrying or moving at any time, is high in use cost, and is difficult to complete when some gaps or places difficult to be easily processed by general equipment need to be processed, and especially cannot be applied to a moving environment which is similar to a subway and needs efficient, timed and repeated sterilization and purification. Therefore, research and development of the plasma beam sterilization equipment which is convenient to use, efficient and economical has very important significance for ensuring the safety of the daily living environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem, a low temperature plasma subway sterilization device is provided, the device is small, conveniently removes and carries, applicable in the purification treatment that disinfects of multiple daily life environment, is particularly useful for the disinfection and sterilization of subway, economy and high efficiency.

In order to solve the technical problem, the utility model provides a low-temperature plasma subway disinfection and sterilization device, which comprises a tubular shell, a plasma nozzle connected with the front end of the tubular shell, a discharge assembly arranged in the plasma nozzle and a power supply assembly for supplying power to the plasma nozzle; the power supply assembly comprises a power supply and a high-voltage generator which are sequentially arranged in the tubular shell from top to bottom; the discharge assembly comprises a discharge plate and a plurality of discharge electrodes fixed on the discharge plate; the bottom of the plasma nozzle is provided with a plurality of through holes matched with the positions and the number of the discharge electrodes, and the end parts of the discharge electrodes penetrate out of the plasma nozzle through the through holes; the power supply, the high voltage generator and the discharge plate are electrically connected in sequence.

Above-mentioned low temperature plasma subway degassing unit, the power can adopt the mode of taking out to charge, for the messenger charges convenient and fast more the utility model discloses in, the device still is provided with the charging panel, carries out wireless charging to the power through the charging panel. The charging panel is provided with a clamping groove matched with the middle tube body for use, and the charging output end of the charging panel is arranged at the clamping groove position and is opposite to the power charging receiving end.

Above-mentioned low temperature plasma subway disinfection and isolation device, tubulose casing mainly used installation power, high voltage generator also are convenient for simultaneously the handheld disinfection and isolation operation that disinfects of operator, and on the basis that reaches this purpose, the design can be rationally selected according to actual conditions to the specific structure bending design appearance of tubulose casing. Preferably, the tubular shell comprises an upward bending tube body, a middle tube body and a switching tube body which are sequentially connected from top to bottom, the switching tube body is connected with the plasma nozzle, and the power supply and the high-voltage generating device are arranged in the middle tube body. Preferably, the upper end of the middle pipe body is connected with the upper end of the upper bent pipe body through threads, the lower end of the middle pipe body is connected with the upper end of the adapter pipe body through threads, and the lower end of the adapter pipe body is connected with the plasma nozzle through threads. The mode of threaded connection is conventional simple easily operation, and convenient to detach maintenance. It will be appreciated that the manner of secure attachment is not limited to threaded attachment and other attachment configurations conventional in the art may be used. Furthermore, the middle pipe body is made of a conductive material so as to be convenient for charging the power supply through the charging plate.

Above-mentioned low temperature plasma subway disinfection and isolation device for further being convenient for getting of device puts and the handheld operation of operator, still preferably be provided with the handle on the lateral surface of the body of bending upward. Further preferably, the handle of the device is also provided with a switch electrically connected with a power supply, so that the device is convenient to open and close.

According to the low-temperature plasma subway disinfection and sterilization device, at least two rows of discharge electrodes are arranged on the discharge plate, and the discharge electrodes in each row are distributed at equal intervals. The equal distance distribution is favorable for generating large-area uniform low-temperature plasma discharge areas, and the purification effect is effectively improved.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model provides a low-temperature plasma subway disinfection and sterilization device which can provide low-temperature plasma with stable operation; the discharge electrodes are arranged on the discharge plate and distributed equidistantly, so that a large-area uniform low-temperature plasma discharge area can be generated, the purification effect is good, and the efficiency is high.

(2) The utility model provides a disinfection and isolation device sets up the plasma shower nozzle through the front end at the tubulose casing, and low temperature plasma discharges the region and is located the lower extreme, safe and reliable, and the tubulose casing can handheld operation, has overcome traditional fixed sterilizing equipment's immobility, and the device can remove wantonly according to the processing demand, realizes having good suitability and very strong practicality to the no dead angle sterilization of processing environment.

(3) The utility model provides a disinfection and isolation device compares traditional sterilizing installation, and is whole small, has reduced manufacturing cost, and structural design is reasonable and simple, and easily industrial production can effectively satisfy the disinfection and isolation demand among the daily life environment, is particularly useful for the portable environment of this type of needs regularly high-efficient many times sterilization and isolation of subway.

Drawings

Fig. 1 is a perspective view of the low-temperature plasma subway disinfection and sterilization device.

Fig. 2 is the decomposition schematic diagram of the low-temperature plasma subway disinfection and sterilization device.

Fig. 3 is another perspective view of the low-temperature plasma subway disinfection and sterilization device.

Fig. 4 is an enlarged schematic view of the plasma showerhead of fig. 3.

Fig. 5 is a cross-sectional view of a plasma showerhead.

Description of reference numerals: 1. a tubular housing; 11. bending the pipe body upwards; 12. a middle tube body; 13. switching the pipe body; 2. a plasma shower head; 21. an interface; 3. a power source; 4. a high voltage generator; 5. a discharge plate; 6. a discharge electrode; 7. a charging plate; 7-1, a clamping groove; 8. a handle; 9. and (4) switching.

Detailed Description

In order that the technical solutions of the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings, it is obvious that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the present invention.

As shown in fig. 1-2, the low-temperature plasma subway disinfection and sterilization apparatus provided in this embodiment includes a tubular housing 1, a plasma nozzle 2 installed at a front end of the tubular housing, a discharge assembly disposed in the plasma nozzle, and a power supply assembly for supplying power to the discharge assembly.

As shown in fig. 1 to 3, the tubular housing 1 includes an upward bending tube 11, an intermediate tube 12, and an adapter tube 13, which are sequentially screwed from top to bottom. The intermediate tubular body 12 is made of a conductive material. The outer side surface of the upward bending pipe body 11 is provided with a handle 8. The handle 8 is a hollow structure and is in a semicircular bent pipe shape.

As shown in fig. 3, the power supply assembly includes a power supply 3 and a high voltage generator 4, and the power supply 3 and the high voltage generator 4 are sequentially disposed in the intermediate pipe 12 from top to bottom and connected by a cable. The handle 8 is also provided with a switch 9 connected with the power supply 3, and the power supply and the switch are connected through a cable.

As shown in fig. 2, in the present embodiment, the power supply 3 is a dc power supply; the power supply is a rechargeable power supply and charges the power supply 3 in a wireless charging mode; wireless charging techniques that have been disclosed in the art may be employed. Therefore, the low-temperature plasma disinfection device provided by the embodiment is further provided with the charging panel 7, the charging panel 7 is of a plate type structure, the clamping groove 71 matched with the middle pipe body for use is arranged on the charging panel 7, and the charging output end of the charging panel 7 is arranged at the clamping groove position and is opposite to the power charging receiving end. The charging plate 7 is connected to an external power supply device, and the power supply 3 is wirelessly charged by the charging plate 7. The charging panel can be arranged at any position of a subway or a subway station where power supply equipment exists according to the requirement.

As shown in fig. 3 to 5, the plasma nozzle 2 has a rectangular parallelepiped structure, and a port 21 is extended from one side of the rectangular parallelepiped structure to be connected to the adapter tube 13 by a screw. Two rows of through holes distributed at equal intervals are arranged at the bottom of the plasma nozzle 2. The plasma shower head internally forms a cavity for accommodating the discharge assembly. The discharge assembly includes a discharge plate 5 and two rows of discharge electrodes 6 fixed to the discharge plate. The discharge plate 5 is a rectangular structure and is fixed in the plasma nozzle. The number of the discharge electrodes 6 is equal to that of the through holes, the mounting positions of the discharge electrodes on the discharge plate are opposite to the through holes formed in the bottom of the plasma nozzle, and the end parts of the discharge electrodes 6 penetrate out of the plasma nozzle from the through holes. In order to protect the discharge electrode, an inward concave groove is formed at the bottom of the plasma spray head, and the depth of the groove is slightly larger than the length of the discharge electrode extending from the through hole.

In this embodiment, the high voltage generator 4 is used to provide high voltage electricity for the plasma nozzle, and the input end of the high voltage generator is connected with the power output end, and the output end is connected with the discharge plate through a cable.

The use method of the low-temperature plasma subway disinfection and sterilization device provided by the embodiment comprises the following steps: a worker holds the disinfection and sterilization device by hand and aims the low-temperature plasma nozzle at the part to be disinfected of the subway; the high-voltage electricity generated by the high-voltage generator is transmitted to the discharge plate and further transmitted to the discharge electrode by the discharge plate, and low-temperature plasma is generated under the action of a strong electric field generated by the discharge electrode, so that the surrounding environment is disinfected.

When above-mentioned low temperature plasma subway disinfection and sterilization device need charge, go into the charging panel draw-in groove with the middle body card of disinfection and sterilization device's tubulose casing to with the receiving terminal that charges of power and the output contact that charges of charging panel, the outside battery charging outfit of switch-on and charging panel connection charges through wireless charging mode to power 3.

It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.

Claims

1. The utility model provides a low temperature plasma subway degassing unit which characterized in that: the plasma spraying device comprises a tubular shell (1), a plasma nozzle (2) connected with the front end of the tubular shell (1), a discharge assembly arranged in the plasma nozzle and a power supply assembly for supplying power to the plasma nozzle; the power supply assembly comprises a power supply (3) and a high-voltage generator (4) which are sequentially arranged in the tubular shell (1) from top to bottom; the discharge assembly comprises a discharge plate (5) and a plurality of discharge electrodes (6) fixed on the discharge plate; the bottom of the plasma nozzle is provided with a plurality of through holes matched with the positions and the number of the discharge electrodes, and the end parts of the discharge electrodes penetrate out of the plasma nozzle through the through holes; the power supply (3), the high-voltage generator (4) and the discharge plate (5) are electrically connected in sequence.

2. The low-temperature plasma subway disinfection and sterilization device as claimed in claim 1, wherein: the device is also provided with a charging plate (7) through which the power supply (3) is wirelessly charged.

3. The low-temperature plasma subway disinfection and sterilization device as claimed in claim 2, wherein: the charging panel is provided with a clamping groove (71) matched with the middle tube body for use, and the charging output end of the charging panel is arranged at the clamping groove position and is opposite to the power charging receiving end.

4. The low-temperature plasma subway disinfection and sterilization device as claimed in claim 1, wherein: tubulose casing (1) includes from last to down bend body (11), middle body (12) and switching body (13) that connect gradually, switching body (13) are connected with plasma nozzle (2), install in middle body (12) power (3) and high voltage generator (4).

5. The low-temperature plasma subway disinfection and sterilization device as claimed in claim 4, wherein: a handle (8) is arranged on the outer side surface of the upward bending pipe body (11),

6. the low-temperature plasma subway disinfection and sterilization device as claimed in claim 5, wherein: a switch (9) electrically connected with the power supply (3) is arranged at the handle (8).

7. The low-temperature plasma subway disinfection and sterilization device as claimed in claim 4, wherein: the intermediate pipe body (12) is made of a conductive material.

8. The low-temperature plasma subway disinfection and sterilization device as claimed in claim 1, wherein: at least two rows of discharge electrodes are arranged on the discharge plate, and the discharge electrodes (6) in each row are distributed at equal intervals.