58 results about "Plasma sterilization" patented technology

A plasma sterilization packaging device for agricultural products includes a feeding unit and a packaging unit, where the packaging unit includes a first conveyor belt, an encapsulation conveyor belt and a second conveyor belt, the lower side of the first conveyor belt is provided with a roll film, the upper side of the encapsulation conveyor belt is provided with a roll film adjustment device and an upper sealing device, and a cutting sealing device is arranged between the encapsulation conveyor belt and the second conveyor belt; the upper sealing device is fixedly connected to both sides of the encapsulation conveyor belt through a first mounting frame, the lower side of the first mounting frame is provided with a hot pressing roller, the hot pressing roller is provided with a sealing positioning wheel, and one side of the sealing positioning wheel is connected to a plasma processing unit.

The utility model provides a kind of for hot pepper seed sterilization plasma disinfection device, including sterilization box and support frame, elastic member is connected on the support frame, the sterilization box is connected with the support frame by the elastic member;The sterilization box is set down obliquely, and the sterilization box is installed with plasma disinfection module, and the plasma disinfection module is used to input plasma into the sterilization box;Several material blocking blocks are installed on the sterilization box, and the material blocking block is provided with guide arc surface, and the sterilization box is installed with vibration motor;Air outlet system is provided on the sterilization box, and the air outlet of air outlet system is set up obliquely upwards;The utility model can solve the problem that the seed cannot be turned over in the sterilization process of the sterilization box in the prior art, so that the seed cannot be fully contacted with sterilization medium, resulting in incomplete sterilization treatment of the seed.

The utility model discloses an air purifier adopting a plasma sterilization mechanism, and relates to the technical field of air purifiers, the air purifier comprises a main machine body and a filtering assembly, the bottom of the main machine body is provided with supporting column feet, and the filtering assembly is arranged on the front side in the main machine body; the filter assembly comprises a mounting frame, bearing grooves, spring damping rods, limiting balls, a primary filter screen, limiting through grooves, an activated carbon filter screen and an HEPA filter screen, the bearing grooves are formed in the two sides of the interior of the mounting frame, the spring damping rods are mounted in the bearing grooves, the limiting balls are mounted at the front ends of the spring damping rods, the primary filter screen is connected into the mounting frame, and the activated carbon filter screen is connected with the limiting through grooves. Limiting through grooves are formed in the two sides of the interior of the primary filter screen, and an activated carbon filter screen is arranged at the rear end of the primary filter screen. According to the air purifier adopting the plasma sterilization mechanism, a filter screen arranged in the air purifier can be quickly disassembled and assembled, so that time and labor are saved during cleaning of the filter screen, and the overall practicability and the use efficiency of the air purifier are improved.

A system for sterilization of a medical device comprising at least one medical device and at least one sterilization device. The sterilization device comprises at least one plasma generator and at least one water source and / or water vapor source for providing water and / or water vapor. The sterilization device is configured to generate plasma-activated water vapor and the system is configured to at least partially conduct the plasma-activated water vapor through the medical device.

This invention relates to the field of air purification technology, specifically to a plasma sterilization device, an air purification module, and an air purifier. The plasma sterilization device includes sterilization modules adapted to be disposed on both sides of a filter. Each sterilization module includes: a grounding electrode adapted to the surface shape of the filter and suitable for contacting or approaching the filter; a blocking medium disposed on the side of the grounding electrode opposite to the filter; and a high-voltage electrode disposed on the side of the blocking medium opposite to the grounding electrode. This plasma sterilization device simultaneously provides sterilization modules on both sides of the filter, sterilizing from both sides simultaneously, thereby effectively and efficiently killing bacteria in the filter without harming human health.

The invention belongs to the technical field of agricultural product processing, and discloses a sterilization method of cold dressed cucumbers, which comprises the following steps: 1) checking and accepting cucumber raw materials; 2) washing with clean water; 3) cleaning with acidic electrolyzed water; 4) washing with clean water; 5) segmenting; 6) performing low-temperature plasma sterilization; 7) adding a seasoning bag; and 8) packaging. According to the invention, a non-thermal processing technology is selected, acidic electrolyzed water is coupled with a low-temperature plasma technology, the cold-dressed cucumber is treated, and the color, fragrance, taste, nutritional ingredients and edible safety of the cold-dressed cucumber are maintained to the greatest extent. The technical process is green, pollution-free, convenient to operate and high in efficiency.

1. Name of the design product: biological reader (new type of express). 2. Use of the design product: for fast and effective monitoring of the processes of pressure steam sterilization, hydrogen peroxide low-temperature plasma sterilization, ethylene oxide sterilization, low-temperature steam formaldehyde sterilization, peracetic acid sterilization, etc. performed in medical equipment, in combination with the corresponding express biological indicator. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The invention provides a preparation method of prefabricated quick-frozen fried pseudosciaena crocea based on physical field auxiliary sterilization. The method comprises the following steps: S1, immersing pseudosciaena crocea with fish scales and internal organs removed into a fishy smell removing agent, taking out the pseudosciaena crocea after 1 hour, washing the pseudosciaena crocea with pure water for 5 minutes, and wiping the pseudosciaena crocea to S2, frying the fishy-smell-removed pseudosciaena crocea, cooling, packaging and sealing; s3, performing low-temperature plasma sterilization; and S4, refrigerating at 4 DEG C for 12 hours, and freezing when the center temperature of the large yellow croaker reaches-18 DEG C. According to the preparation method disclosed by the invention, the sensory score of the fishy smell of the pseudosciaena crocea is remarkably reduced, the microbial inactivation effect is remarkable, the freezing time is shortened to 38.17 min, the unfreezing loss, the centrifugal loss and the cooking loss are reduced to the maximum extent, stable water-holding capacity and moisture distribution in the fish meat are maintained, uniform and fine ice crystals are formed, and the fish meat is close to a fresh state in texture; and the quality of the fish meat is well maintained.

This invention discloses a bladeless air sterilization device based on plasma flow control, comprising an induced airflow array and a plasma sterilization array arranged sequentially along the airflow direction. The induced airflow array consists of several SDBD (Solid State Difference) units, and the plasma sterilization array consists of several DBD (Deep State Difference) units. Each SDBD unit includes an SDBD unit dielectric layer, within which an SDBD unit high-voltage electrode is embedded, and an SDBD unit grounding electrode is disposed outside the SDBD unit dielectric layer. Each DBD unit includes two DBD unit dielectric layers, within which a DBD unit grounding electrode and a DBD unit high-voltage electrode are respectively embedded. This bladeless air sterilization device uses an induced airflow array instead of a bladed device, simplifying the structure and reducing costs; the high-voltage electrode is embedded in the dielectric layer, increasing safety; and multi-stage sterilization improves the sterilization rate.

The invention belongs to the technical field of disinfection of breathing machines for critical patients, and provides a breathing rehabilitation nursing device. The breathing rehabilitation nursing device comprises a nursing breathing machine main body which is used for breathing rehabilitation training of critical patients; one end of the plasma disinfecting and killing module is communicated with the direction of the air outlet of the nursing breathing machine main body, and the other end of the plasma disinfecting and killing module is communicated with a critical patient; the plasma disinfection module comprises a main shell and an ionization assembly; the ionization assembly is arranged in the main shell; the device is reasonable in design and easy to operate, the structural compactness of the whole device can be effectively improved, equipment redundancy is reduced, and the efficiency is guaranteed by adopting a real-time ionization disinfection mode; and by adopting the magnetic field pre-reinforcement design, the comprehensiveness of air flow sterilization is greatly improved, so that the device is suitable for industrial popularization.

The utility model relates to a plasma sterilization double-cone mixer, and belongs to the technical field of mixing processing. Comprising a rack and a double-cone barrel body, hollow shafts are symmetrically arranged on the side faces of the double-cone barrel body, bearings are symmetrically arranged at the top of the rack, and the hollow shafts penetrate through the corresponding bearings, so that the double-cone barrel body is erected on the rack, the hollow shafts are driven to rotate, and the double-cone barrel body is driven to rotate synchronously; a feeding hole is formed in the top of the double-cone barrel body, and a discharging hole is formed in the bottom of the double-cone barrel body; a vacuumizing pipe penetrates through one hollow shaft, one end of the vacuumizing pipe penetrates through an inner cavity of the barrel body, the other end of the vacuumizing pipe is connected with a vacuumizing device, a plasma conveying pipe penetrates through the other hollow shaft, and one end of the plasma conveying pipe penetrates through the inner cavity of the barrel body. And the other end of the plasma conveying pipe is connected with a plasma generating device through a rotary joint. The device is simple in structure and convenient to operate, powder in the barrel body can be fully mixed, and the sterilization effect of plasma on the powder can reach 99.99%.

The utility model discloses a plasma sterilization, deodorization and purification module with a self-cleaning function, and relates to the technical field of plasma sterilization, deodorization and purification. The electrode cleaning brush comprises an upper bottom shell and a wiring hole, the bottom of the upper bottom shell is clamped with a lower bottom shell, the bottom of the inner wall of the lower bottom shell is fixedly connected with a fixing mechanism, and the fixing mechanism comprises a circuit board positioning block and a circuit board lock catch. Firstly, the power supply is started, the power supply releases positive and negative ions through the plasma emission electrode to sterilize air, and then after the specified time is up, the circuit board sends out a signal, so that the rotating motor rotates to drive the electrode cleaning brush to rotate, dust on the plasma emission electrode is brushed away, and cleaning of the plasma emission electrode is achieved. In practical application, a proper number of modules can be selected for free combination according to requirements.

The application discloses a kind of sterilization device and air conditioner, including lamp, first electrode, second electrode and optical filter structure, lamp two ends axial opening, the inner wall of lamp and the outer wall of lamp form the gas storage cavity for storing luminous gas;First electrode is set to the inside of lamp, the cross-sectional dimension of first electrode is less than the cross-sectional dimension of the inner wall of lamp, the inner wall of lamp and first electrode form sterilization air duct, sterilization air duct is integrated in the air outlet air duct of air conditioner;Second electrode is set to the outside of the outer wall of lamp;Optical filter structure is located the axial end surface of lamp, and optical filter structure is opened with the air outlet of sterilization air duct communication.This application embodiment provides the sterilization device to combine medium resistance barrier discharge generation plasma sterilization mode with ultraviolet sterilization mode, realizes double synergic sterilization effect, can carry out efficient sterilization and deodorization to indoor environment.

The utility model discloses a plasma disinfection cover with multiple air ducts, which relates to the technical field of air purification, and adopts the technical scheme that the plasma disinfection cover comprises a flow guide cover and a plasma fan, the flow guide cover comprises an upper shell and a lower shell, a cavity for accommodating the plasma fan is formed between the upper shell and the lower shell, the plasma fan is provided with a filter block, and the filter block is connected with the flow guide cover. A positioning disc is arranged in the cavity, a plurality of plasma emitters and guide plates are arranged on the positioning disc in an array mode, a first air channel is formed in the outer edge of the lower shell, a second air channel is formed in the center of the lower shell, a through hole is formed in the center of the upper shell, and the filter block is located in the center of the through hole. By arranging the filter block and a plurality of air channels, multiple protection can be formed when the device is used, airflow forms a plasma air curtain through the first air channel, airflow protection and plasma air protection are achieved, fresh air protection can be formed through the second air channel, and viruses and bacteria can be effectively isolated from the environment where a transfusion patient is located.

The vehicle-mounted refrigerator with the plasma sterilization function is characterized in that the vehicle-mounted refrigerator comprises a refrigerator body, a containing cavity is formed in the refrigerator body, a refrigerator door is arranged on the outer side of the containing cavity, and one side of the refrigerator door is hinged to the refrigerator body; a storage box is arranged in the storage cavity, the storage box comprises an upper storage box and a lower storage box, and the upper storage box and the lower storage box are each provided with a through hole and a plasma sterilization assembly matched with the through hole; when the box door is closed, the plasma sterilization assembly starts to work; and when the box door is opened, the plasma sterilization assembly stops working. The plasma sterilization cabinet is reasonable in structural design and simple in structure, articles in the storage area are sterilized and disinfected through the plasma sterilization assembly, and food safety of a user is guaranteed; the plasma sterilization assembly is matched with opening and closing of the box door to start working and stop working, energy is saved, environmental protection is achieved, the plasma sterilization assembly is convenient to install, and the assembling efficiency is improved.

The utility model relates to a hand-held sterilization instrument based on plasma sterilization, including sterilization instrument body, the both sides of sterilization instrument body all are separately provided with no. One air inlet and no. Two air inlets, the top of sterilization instrument body is fixedly connected with handle, is provided with control button on the handle, the bottom of sterilization instrument body is provided with plasma sterilization mechanism, the middle part of sterilization instrument body is provided with blowing mechanism, the top of sterilization instrument body one side is provided with child lock button, the outside of child lock button is provided with protection mechanism, and the protection mechanism includes lock block and closed baffle, and the beneficial effect is: the utility model discloses the setting of protection mechanism, through the locking of closed baffle and lock block, can effectively close the protection of child lock button, effectively avoid the situation of child mistaken touch, simultaneously through pressing the spacing clamping block and makes it separate from corresponding spacing clamping groove, and pulls closed baffle and can leak out child lock button and use to be unlocked, in avoiding child mistaken touch unlocking equipment's simultaneously not affecting the convenience of equipment use.

The invention discloses a selenium-rich beverage raw material plasma sterilization device, and relates to the technical field of biomedical engineering.The selenium-rich beverage raw material plasma sterilization device comprises a sterilization mechanism, an auxiliary mechanism comprises a gas storage tank, a double-shaft motor is arranged at the top of the gas storage tank, and a main shaft and an auxiliary shaft of the double-shaft motor are both connected with fan bodies through electromagnetic clutches; filtering membranes and fixing rings are placed at gas inlets of two gas outlet ends of the flow dividing shell, a vent hole is pre-formed between two grooves of the double-groove treatment box, and adsorption layers are arranged in the two grooves of the double-groove treatment box. By arranging the auxiliary mechanism, not only is the environment-friendly emission problem of mixed gas solved, but also the environment-friendly emission problem of the mixed gas is solved, and the environment-friendly emission problem of the mixed gas is solved; the efficient utilization of ozone resources can be realized, so that the consumption of disinfection consumables in equipment operation is reduced, and the use efficiency of the plasma sterilization device is further improved.

The invention discloses fruit and vegetable modified atmosphere packaging equipment based on a plasma technology and a fresh-keeping method. The method comprises the following steps: pre-cooling fruits and vegetables, and putting the pre-cooled fruits and vegetables into a packaging bag with a one-way valve; oxygen, carbon dioxide and nitrogen are mixed according to a specific proportion through a gas distribution system; introducing the mixed gas into a plasma generating device to generate low-temperature plasma; and finally, injecting the plasma gas into a packaging bag to finish modified atmosphere packaging. According to the method, modified atmosphere packaging and plasma sterilization are combined, respiration of fruits and vegetables can be effectively inhibited, enzyme activity can be reduced, microorganisms can be killed, the fresh-keeping period is prolonged, and the quality is kept. The equipment for realizing the method comprises a gas distribution system for mixing gas; the plasma generation device is communicated with the gas distribution system and is used for converting the mixed gas into low-temperature plasma; the air blowing gun is used for injecting the plasma gas into the packaging bag; and the control device is used for controlling the operation of the whole equipment. The equipment is high in integration level, convenient to operate and suitable for household and industrial production.

The invention discloses a hydrogen peroxide low-temperature plasma sterilization chemical indicator card and a preparation method and a verification system thereof, the hydrogen peroxide low-temperature plasma sterilization chemical indicator card comprises a base material and color-changing ink, the color-changing ink comprises the following components by weight: 3.5-8.0 wt% of a porous material, 5-50 wt% of a binder, 1-3.0 wt% of an alkaline substance, 0.8-1.5 wt% of a redox indicator, 0.2-2.0 wt% of a synergistic color developing agent, 0.2-1.2 wt% of a nano stabilizer, and the balance of a solvent; the porous material is a metal organic framework material MOFs or a covalent organic framework material COFs. By utilizing the characteristics of porosity and large specific surface area of MOFs or COFs, effective adsorption and rapid mass transfer of H2O2 can be ensured, and the phenomena that many indicators in the current market are poor in discoloration due to weak penetrating power of hydrogen peroxide and are naturally discolored when placed at normal temperature within the shelf life are improved.

The invention is suitable for the technical field of medicine packaging material processing, and provides a plasma sterilization device for a medicine packaging material, the plasma sterilization device comprises a support, a worm, a motor, a flattening roller and a wind-up roller, the worm is rotatably connected to the back of the support, the motor is installed on the back of the support and connected with the end of the worm, the flattening roller is installed on the surface of the support, and the wind-up roller is installed on the surface of the support. The winding roller is mounted on the surface of the bracket; the aluminum foil winding device has the beneficial effects that the inner wall of the aluminum foil is scraped in a reciprocating mode through the rubber belts, creases left on the surface of the aluminum foil can be smeared evenly, it is guaranteed that the winding process is not affected by stripes when the aluminum foil is wound, it is guaranteed that the time of friction between the single rubber belt and the aluminum foil is short through the arrangement of the multiple rubber belts, and the service life of the aluminum foil is prolonged. Dust attached to the surface of the aluminum foil due to generation of static electricity is avoided, and meanwhile, the multiple rubber belts uniformly share the contact time with the aluminum foil, so that the problem that the cleaning effect becomes poor due to the fact that the rubber belts are overheated due to friction can be effectively prevented.

The application discloses a kind of plasma sterilization and deodorization device and control method thereof, it is related to low-temperature plasma application technical field.A kind of plasma sterilization and deodorization device, comprising: fan guide flow circulation module, fan guide flow circulation module has interface module, discharge module, decomposition module in turn sealed series along gas flow direction, discharge module includes insulating layer, the outer surface of insulating layer is provided with the discharge electrode layer formed by the winding of conductive wire, and the inside is attached with the rod-shaped conductive electrode.Installing is discharged when discharge module, insulating layer is attached with conductive electrode, so that discharge form is medium resistance discharge surface discharge, replaces traditional needle discharge form, avoids needle-shaped electrode condensate aggregation short-circuit problem, by adjusting the winding length of conductive wire cooperates voltage regulation, from source control the ozone amount generated by discharge, realize the controllable generation of low concentration of ozone, after further reducing ozone concentration after the catalyst decomposition of decomposition module, improve safety.

The invention relates to the technical field of vegetable oil, in particular to original-flavor high-oleic-acid peanut oil and a preparation method thereof.The preparation method comprises the six steps of raw material pretreatment, medium-temperature gradient squeezing, multi-stage condensation and recovery of aroma components, composite chelating treatment, aroma readdition and post-treatment and nitrogen-filled packaging; a tight synergistic effect is formed among the steps, raw material pretreatment provides a proper material state for medium-temperature gradient squeezing, waste gas synchronously collected in the squeezing process provides a source for flavor recovery, and the return addition of a flavor concentrated solution makes up for the loss of a small amount of flavor in the squeezing process; impurities affecting grease stability are removed through composite chelating treatment, and a comprehensive fresh-keeping system is formed through subsequent ceramic membrane deoxidation, plasma sterilization and nitrogen-filled packaging, so that efficient extraction of the high-oleic-acid peanut oil is achieved, the treatment effect of each link is guaranteed, and meanwhile, the yield of the high-oleic-acid peanut oil is increased. The comprehensive effects of rich original flavor, excellent physical and chemical indexes and remarkably prolonged shelf life are achieved.

The invention provides a plasma sterilization, disinfection and purification device for air in a livestock breeding house, and belongs to the technical field of air sterilization and purification. The plasma sterilization, disinfection and purification device for air in the livestock breeding house comprises a disinfection box, a shell and a disinfection and purification device, the disinfection and purification device comprises a driving mechanism, the driving mechanism comprises a driving motor and a rotating shaft, and the rotating shaft is rotationally arranged in the disinfection chamber; the sterilization assembly is arranged in the disinfection chamber and comprises a rotating drum mounted on a rotating shaft, a wave-shaped groove is formed in the rotating drum, and an electric wire used for generating plasma is arranged in the wave-shaped groove; by arranging the rotary drum and the wave-shaped grooves in the rotary drum and arranging the electric wires along the wave-shaped grooves, the length of the electric wires in unit volume is greatly prolonged, the density of plasma generation and the contact area with air are increased, and therefore the sterilization and disinfection effect is remarkably improved.

The utility model discloses a kind of stable low-temperature plasma sterilization bacteriostatic generating device, comprising: main unit and angle adjusting mechanism, the main unit includes shell, battery compartment, inverter, step-up transformer and overload protector are fixedly installed on the inner wall of shell, two dry batteries are provided in the battery compartment, it has beneficial effect to be as follows: the bending characteristic of flexible medium layer and the elastic performance of metal net itself are utilized, so that metal net can be tightly adhered on uneven surface, therefore, non-flat surface object can be implemented to sterilization and disinfection, and by rotating knob driving adjusting screw rotation, by adjusting screw driving slider movement, by the setting of slider, fixed plate and connecting rod driving flexible medium layer protection device rotation, its angle is adjusted, so as to implement effective treatment to micro-gap area or those conventional equipment difficult to reach complex parts, bring convenience to operator.

The invention relates to the technical field of public health detection, and discloses a plasma disinfection numerical value testing method and system for a train compartment environment. According to the method, a complete numerical simulation framework is established, and a prediction model of the ion concentration is constructed through the actually measured ion release intensity and ion disinfection efficiency of the plasma equipment. Spatial disinfection efficiency distribution of plasma equipment at different arrangement positions and under different working parameters can be quantitatively analyzed, the disinfection effect of a passenger breathing area is scientifically predicted in combination with airflow organization characteristics in train carriages, and a theoretical basis is provided for optimal configuration of the plasma disinfection equipment.

The present invention provides a process and system for waste treatment that provides the benefits of both bio-digestion and plasma sterilization. The process and system of the present invention ensures effective breakdown of organic material and thorough elimination of pathogens, resulting in safe and efficient waste management of waste streams comprising a compostable bio-degradable breathable Personal Protective Equipment (PPE) article comprising a compostable plant-based material wherein the compostable plant-based material comprises a compostable starch-based polymer and wherein the compostable bio-degradable breathable PPE meets the requirements of a Class 1 medical device as classified according to the Medical Device Regulation (EU) 2017 / 745 (MDR).

The application provides a plasma disinfection air shower, which comprises an air shower, a plasma generating device and an air duct; wherein the air shower comprises a door, the air duct is installed on the side wall of the air shower, a filter screen is arranged in the air duct, and the plasma generating device is located in the air duct. The application has the beneficial effects that: the plasma generating device can generate high-concentration plasma, the air entering the air duct can be disinfected and sterilized, the bacteria on the filter screen can be effectively disinfected and sterilized, the problem of secondary pollution caused by the bacteria breeding on the high-efficiency filter screen of the traditional air shower is solved, and no chemical reagent or other medical consumables are used, which is economic and environmentally friendly.

The utility model discloses an air return type plasma disinfection device for air purification, which comprises a shell, a first partition plate is arranged on one side in the shell, a second partition plate is arranged on one side, far away from the first partition plate, in the shell, and plasma discharge devices are arranged on the first partition plate and the second partition plate. A disinfection assembly is arranged on the inner side of the plasma discharge device in the shell, a fan is arranged on the side, away from the plasma discharge device, of the disinfection assembly in the shell, a volute is arranged on the outer side of the fan, a flow guide pipe is arranged on one side of the volute, and a cover plate is arranged on the portion, between the first partition plate and the second partition plate, of the shell. A plurality of air inlets distributed at equal intervals are formed in the cover plate, and an air outlet is formed in the side, away from the cover plate, of the second partition plate of the shell. And through the air return type arrangement, air flow can be circularly disinfected, bacterial cross infection is effectively avoided, and the air purification effect is improved.

This invention provides a plasma sterilization cabinet with a rotating structure, belonging to the field of medical devices. It includes a cabinet body with a door rotatably mounted on the front. A support is fixedly mounted on the bottom of the outer surface of the cabinet body, and an adjustment component is fixedly mounted on the back of the outer surface. The bottom of the adjustment component extends through the bottom of the cabinet body into the interior, and both the left and right sides of the top of the adjustment component extend into the interior of the cabinet body. A drive device is fixedly mounted on the top of the outer surface of the cabinet body, and the bottom end of the drive device penetrates the cabinet body and extends into the interior. By mounting multiple connecting components and holding components on the surface of the drive device, the drive device can drive the multiple connecting components and holding components to rotate together. This allows the instruments stored in the holding components to make effective and uniform contact with the sterilizing agent sprayed from the cabinet body, thereby ensuring the sterilization effect of the instruments.

The invention relates to the technical field of pet supplies, in particular to a plasma sterilization and deodorization device for pet supplies, which comprises a shell, and a plasma preparation mechanism, a placement mechanism and a monitoring control mechanism which are arranged in the shell, a partition plate is arranged in the shell, and the space in the shell is divided into a preparation cavity and a working cavity by the partition plate; the plasma preparation mechanism is located in the preparation cavity, and the placement mechanism is located in the working cavity; the plasma preparation mechanism comprises a gas compressor, a dielectric barrier discharge generator, a connecting base, a high-voltage positive electrode and a grounding negative electrode, the high-voltage positive electrode is fixedly connected with the shell through the connecting base, the grounding negative electrode is fixedly connected with the shell, the input end of the gas compressor is externally connected with the shell, and the dielectric barrier discharge generator is connected with the high-voltage positive electrode; by means of the flow guide plate, the dispersion plate and accurate flow control, generated plasma airflow can be fully disturbed and stably acts on the surface of an object after being uniformly diffused, and sterilization dead angles are avoided.