CN112089864A

CN112089864A - Low-temperature plasma disinfection and sterilization device for public toilet dryer

Info

Publication number: CN112089864A
Application number: CN202010888560.0A
Authority: CN
Inventors: 蒋晓燕; 张涛; 程祎航; 陈琳; 张良; 陈颖
Original assignee: Changzhou Institute of Technology
Current assignee: Changzhou Institute of Technology
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2020-12-18

Abstract

The invention relates to the technical field of drying machine disinfection and sterilization devices, and discloses a low-temperature plasma disinfection and sterilization device for a public toilet drying machine, which comprises a U-shaped plate, a drying machine body and a low-temperature plasma generating device, wherein the low-temperature plasma generating device is fixedly arranged on the back of the drying machine body, the low-temperature plasma generating device comprises a top cover, five piezoelectric ceramic electrodes and a control circuit board, wherein the four piezoelectric ceramic electrodes are respectively and fixedly connected to four corners of the top cover, the other piezoelectric ceramic electrode is fixedly connected to the center of the top cover, one ends of the five piezoelectric ceramic electrodes, which are far away from the top cover, are electrically connected with the control circuit board, and a servo motor is fixedly arranged on the top of. This a low temperature plasma disinfection and sterilization device for public latrine drying-machine adopts low temperature plasma sterilization technique, need not to use chemical, and low cost not only does not have any harm to the user, has effectively blocked the germ propagation that arouses by the drying-machine moreover.

Description

Low-temperature plasma disinfection and sterilization device for public toilet dryer

Technical Field

The invention relates to the technical field of drying machine disinfection and sterilization devices, in particular to a low-temperature plasma disinfection and sterilization device for a public toilet drying machine.

Background

In the beginning of 2020, the new coronary pneumonia intruding into it was a disconcerting source of disconcerting and has been essentially torqued in national conditions since its national religion. In China, although various provinces and cities have been subjected to continuous re-work and normal production is recovered, epidemic prevention and control and public health cannot be relaxed.

Relevant research shows that the pure wind dryer not only hides bacteria, but also spreads the bacteria in a large quantity. Pure wind dryers spread bacteria 1300 times as much as paper towels and the bacteria were blown out by the wind to within 10 feet of the dryer starting point. The filter element in the dryer can not be replaced in time, so that various bacteria are bred in a humid place, and the filter effect of some filter elements is poor. The potential risks of cross contamination and microbial growth in the process of moisture are of great concern. And the public toilet is in a discontinuous closed space, the distance between people is short, people frequently and densely enter and exit, the spreading infection of virus, bacteria and mould is easily caused, and the public toilet is more likely to become an important way for spreading new coronavirus at present. Meanwhile, the influence of the replacement of the filter element on the working personnel is also avoided. Therefore, in view of public health problems, the structure and the cleaning method of the dryer need to be considered again, and a low-temperature plasma disinfection and sterilization device for the public toilet dryer is needed. The existing market has the following relevant disinfection and sterilization modes:

ultraviolet ray disinfection, the ultraviolet lamp used for ultraviolet ray disinfection is a high ozone ultraviolet lamp, and the ultraviolet ray is disinfected by utilizing the photochemical transformation effect of the 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 can generate ozone at the same time, and also has the sterilization effect. 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, the skin may be cancerated and tumors of the skin may occur;

the disinfection solution is used for sterilization, germs are killed and killed by utilizing the disinfection solution on the surface of an environment or an object, the common disinfection solution is 84 disinfection solution, potassium permanganate, peroxyacetic acid and the like, the disinfection and killing is incomplete in use, the disinfection effect is influenced by the environment, potential safety hazards exist in the storage process, and the human body is possibly injured. Alcohol coating is also adopted, but the pungent smell is large, and open fire needs to be avoided.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the low-temperature plasma disinfection and sterilization device for the public toilet dryer, which has the advantage of cutting off the virus propagation path and solves the problems in the background technology.

(II) technical scheme

In order to achieve the purpose of cutting off the virus propagation path, the invention provides the following technical scheme: a low temperature plasma disinfection and sterilization device for public latrine drying-machine, including U template, drying-machine body and low temperature plasma generating device, low temperature plasma generating device fixed mounting is at the back of drying-machine body, low temperature plasma generating device includes top cap, five piezoceramics electrodes and control circuit board, four of them piezoceramics electrodes fixed connection is in the four corners department of top cap respectively, another one piezoceramics electrode fixed connection is in the center department of top cap, five the piezoceramics electrode is kept away from the one end and the control circuit board electric connection of top cap, the top fixed mounting of U template has servo motor, servo motor's output fixedly connected with lead screw, the other end of lead screw runs through the top of U template and downwardly extending, the lead screw rotates with the top of U template to be connected, and rotates through the bearing to be connected between the bottom of lead screw and U template, the U template is internally provided with a supporting plate, the drying machine body is arranged on the upper surface of the supporting plate and is connected with the supporting plate through a dismounting mechanism, the lead screw penetrates through the supporting plate and is connected with the supporting plate in a threaded mode, the side wall of the vertical part of the U template is provided with a sliding groove, one side of the supporting plate is fixedly connected with a sliding block matched with the sliding groove, and the sliding block is connected with the sliding groove in a sliding mode.

Preferably, dismouting mechanism includes the L type pole of fixed connection at drying-machine body back, the last fixed surface of backup pad is connected with the montant corresponding with L type pole, the arc piece of the equal fixedly connected with halfcylinder structure of the end in opposite directions of L type pole and montant, two the arc piece sets up of laminating each other, and the outside of two arc pieces all is equipped with the external screw thread, common cover is equipped with the butt joint section of thick bamboo of matcing on L type pole and the montant, and is equipped with the internal thread on the inner tube wall of butt joint section of thick bamboo, two the arc piece all is located and sets up in the butt joint section of thick bamboo, and two common threaded connection of arc piece and connecting cylinder.

Preferably, the top and the bottom of the U-shaped plate are fixedly connected with mounting blocks, and positioning holes are symmetrically formed in the mounting blocks.

Preferably, the upper surface of the supporting plate is provided with a butt joint groove which is matched with the bottom of the dryer body, and the butt joint groove is provided with an opening at one side.

Preferably, a ball groove is formed in one side, close to the bottom of the sliding groove, of the sliding block, matched balls are installed in the ball groove, one end, far away from the bottom of the ball groove, of each ball penetrates through a groove opening of the corresponding ball groove and extends outwards, and the ball groove is in rolling connection with the bottom of the sliding groove.

Preferably, the outer side of the servo motor is provided with a protective cover, and the protective cover is fixedly installed at the top of the U-shaped plate.

Preferably, the wall of the L-shaped rod is fixedly sleeved with a baffle ring, and the lower surface of the baffle ring is attached to the edge of the top end of the butt-joint cylinder.

Preferably, the outer cylinder wall of the butt joint cylinder is fixedly sleeved with a matched anti-skidding sleeve.

(III) advantageous effects

Compared with the prior art, the invention provides a low-temperature plasma disinfection and sterilization device for a public toilet dryer, which has the following beneficial effects:

the low-temperature plasma disinfection device for the public toilet dryer is characterized in that a U-shaped plate, a dryer body, a low-temperature plasma generating device, piezoelectric ceramic electrodes, a servo motor, a lead screw, a supporting plate, a dismounting mechanism, a sliding chute and a sliding block are arranged, the low-temperature plasma generating device is arranged behind the dryer body and adopts dielectric barrier discharge (DBD discharge), compared with other low-temperature plasma discharge technologies, the low-temperature plasma generating device has smaller equipment volume and is convenient to install, after the low-temperature plasma generating device discharges by using voltage, plasma jet flow is released, disinfection and sterilization are firstly carried out on the interior of the dryer body, then hands of people are disinfected and sterilized, bacteria breeding is avoided in the dryer body, the propagation path of viruses is effectively cut off, five piezoelectric ceramic electrodes are used as discharge electrodes, and the low-temperature plasma generating device can serve as a transformer, the discharge voltage of more than 5000V is realized, the use of a coil transformer is omitted, the volume of the whole discharge device is reduced, the discharge device can be used as a discharge electrode which is high temperature resistant and long in service life, sufficient low-temperature plasma jet flow is generated, a low-temperature plasma sterilization technology is adopted, chemical agents are not needed, the cost is low, and the like, the plasma is distributed in a diffuse manner in a dryer, the sterilization has no dead angle, and in comparison, the pure ultraviolet sterilization easily generates sterilization dead angle due to the directivity of light, and the sterilization effect on fungi is poor; the main effective components of the low-temperature plasma comprise charged particles, active particles and free radicals (oxygen atoms, hydroxyl groups, active oxygen and active nitrogen), VUV and UVC wave band high-energy ultraviolet rays, thermal effect generated by discharge, bombardment of the charged particles and an alternating electric field, and the low-temperature plasma has a spectrum antibacterial effect on bacteria and fungi, has no chemical residue and drug resistance after being used, is efficient in sterilization, and is environment-friendly and safe; the temperature of low temperature plasma is at 40 ℃ -60 ℃, compare with the 100 ℃ hot water of high temperature sterilization method, the temperature will be much lower, can not cause the ageing of plastics original paper and circuit components, can not scald the staff more, especially, no harm to the user, the germ that arouses by the drying-machine has also been blocked and has been propagated, start servo motor drives the lead screw and rotate, make threaded connection's backup pad can drive the slider and go up and down along the spout, thereby make the highly convenient as required regulation and control of drying-machine body, be convenient for adapt to the people of different heights and use, dismouting mechanism makes things convenient for and carries out quick assembly disassembly between drying-machine body and the backup pad, thereby be convenient for maintain it as required.

Drawings

FIG. 1 is a schematic structural diagram of a low-temperature plasma disinfection and sterilization device for a public toilet dryer according to the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

FIG. 4 is a schematic structural diagram of a low-temperature plasma generating device of the low-temperature plasma disinfecting and sterilizing device for the public toilet dryer provided by the invention;

FIG. 5 is a schematic structural view of a connecting part of a piezoelectric ceramic electrode and a top cover of the low-temperature plasma disinfection and sterilization device for a public toilet dryer provided by the invention.

In the figure: the device comprises a 1U-shaped plate, a 2 dryer body, a 3 low-temperature plasma generating device, a 301 top cover, 302 piezoelectric ceramic electrodes, a 303 control circuit board, a 4 servo motor, a 5 lead screw, a 6 supporting plate, a 7 sliding groove, an 8 sliding block, a 9L-shaped rod, a 10 vertical rod, a 11 arc-shaped block, a 12 butt joint cylinder, a 13 mounting block, a 14 butt joint groove, a 15 ball groove, a 16 ball, a 17 protective cover, an 18 retaining ring and a 19 anti-slip sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a low-temperature plasma disinfection and sterilization device for a public toilet dryer comprises a U-shaped plate 1, a dryer body 2 and a low-temperature plasma generating device 3, the low-temperature plasma generating device 3 is fixedly installed at the back of the dryer body 2, the low-temperature plasma generating device 3 comprises a top cover 301, five piezoelectric ceramic electrodes 302 and a control circuit board 303, wherein four piezoelectric ceramic electrodes 302 are respectively and fixedly connected at four corners of the top cover 301, the other piezoelectric ceramic electrode 302 is fixedly connected at the center of the top cover 301, one ends of the five piezoelectric ceramic electrodes 302 far away from the top cover 301 are electrically connected with the control circuit board 303, a servo motor 4 is fixedly installed at the top of the U-shaped plate 1, an output end of the servo motor 4 is fixedly connected with a lead screw 5, the other end of the lead screw 5 penetrates through the top of the U-shaped plate 1 and extends downwards, the lead screw, the screw rod 5 is rotatably connected with the bottom of the U-shaped plate 1 through a bearing, a supporting plate 6 is arranged in the U-shaped plate 1, the dryer body 2 is arranged on the upper surface of the supporting plate 6, the dryer body 2 is connected with the supporting plate 6 through a dismounting mechanism, the screw rod 5 penetrates through the supporting plate 6, the screw rod 5 is in threaded connection with the supporting plate 6, a chute 7 is arranged on the side wall of the vertical part of the U-shaped plate 1, a slide block 8 matched with the chute 7 is fixedly connected to one side of the supporting plate 6, the slide block 8 is in sliding connection with the chute 7, the low-temperature plasma generating device 3 is arranged behind the dryer body 2, the low-temperature plasma generating device 3 adopts dielectric barrier discharge (DBD discharge), compared with other low-temperature plasma discharge technologies, the low-temperature plasma generating device has smaller equipment volume and is convenient to install, and, the plasma jet is released, the inside of the dryer body 2 is disinfected and sterilized firstly, then the hands of the people are disinfected and sterilized, the dryer body 2 is free from bacteria breeding, the propagation path of viruses is effectively cut off, five piezoelectric ceramic electrodes 302 are used as discharge electrodes, the piezoelectric ceramic electrodes can be used as transformers to realize discharge voltage above 5000V, coil transformers are omitted, the size of the whole discharge device is reduced, the piezoelectric ceramic electrodes can also be used as discharge electrodes with high temperature resistance and long service life to generate enough low-temperature plasma jet flow, a low-temperature plasma sterilization technology is adopted, chemical agents are not needed, the cost is low, and the like, the plasma is distributed in a diffuse mode inside the dryer, sterilization has no dead angle, and compared with the prior art, pure ultraviolet sterilization easily generates sterilization dead angles due to the directivity of light, and has a poor sterilization effect on fungi; the main effective components of the low-temperature plasma comprise charged particles, active particles and free radicals (oxygen atoms, hydroxyl groups, active oxygen and active nitrogen), VUV and UVC wave band high-energy ultraviolet rays, thermal effect generated by discharge, bombardment of the charged particles and an alternating electric field, and the low-temperature plasma has a spectrum antibacterial effect on bacteria and fungi, has no chemical residue and drug resistance after being used, is efficient in sterilization, and is environment-friendly and safe; the temperature of low temperature plasma is at 40 ℃ -60 ℃, compare with the 100 ℃ hot water of high temperature sterilization method, the temperature will be much lower, can not cause the ageing of plastics original paper and circuit components, can not scald the staff, especially, no harm to the user, the germ that has also been blocked and has been aroused by the drying-machine is propagated, start servo motor 4 drives lead screw 5 and rotates, make threaded connection's backup pad 6 can drive slider 8 and go up and down along spout 7, thereby make the highly convenient regulation and control as required of drying-machine body 2, be convenient for adapt to the people of different heights and use.

The dismounting mechanism comprises an L-shaped rod 9 fixedly connected to the back of the dryer body 2, a vertical rod 10 corresponding to the L-shaped rod 9 is fixedly connected to the upper surface of the supporting plate 6, arc-shaped blocks 11 of a semi-cylinder structure are fixedly connected to opposite ends of the L-shaped rod 9 and the vertical rod 10, the two arc-shaped blocks 11 are mutually attached, external threads are arranged on the outer sides of the two arc-shaped blocks 11, a matched butt-joint cylinder 12 is sleeved on the L-shaped rod 9 and the vertical rod 10 together, internal threads are arranged on the inner cylinder wall of the butt-joint cylinder 12, the two arc-shaped blocks 11 are both positioned in the butt-joint cylinder 12, the two arc-shaped blocks 11 are in common threaded connection with the connecting cylinder 12, the butt-joint cylinder 12 is rotated to be separated from the two arc-shaped blocks 11, the dismounting separation between the dryer body 2 and the supporting plate 6 can be convenient, the arc-shaped blocks 11 at the end part of the L, so that the installation can be completed by the common threaded connection of the arc-shaped blocks 11.

The equal fixedly connected with installation piece 13 in top and the bottom of U template 1, and the symmetry has seted up the locating hole on the installation piece 13, makes things convenient for the installation of U template 1 location.

The upper surface of backup pad 6 is seted up and is corresponded to groove 14 with 2 bottoms of drying-machine body, and just butt joint groove 14 is one side opening setting, makes things convenient for to fix a position the installation between drying-machine body 2 and backup pad 6.

The ball groove 15 has been seted up to one side that slider 8 is close to the spout 7 tank bottom, and installs the ball 16 of matcing in the ball groove 15, and the ball 16 is kept away from the one end of ball groove 15 tank bottom and is passed the notch of ball groove 15 and outwards extend, and with the tank bottom roll connection of spout 7, reduces the frictional force between slider 8 and the spout 7.

The outside of servo motor 4 is equipped with protection casing 17, and protection casing 17 fixed mounting is at the top of U template 1, conveniently protects servo motor 4.

The wall of the L-shaped rod 9 is fixedly sleeved with a baffle ring 18, the lower surface of the baffle ring 18 is attached to the top edge of the butt joint cylinder 12, and the butt joint cylinder 12 can be installed when abutting against the baffle ring 18.

The outer cylinder wall of the butting cylinder 12 is fixedly sleeved with a matched anti-skidding sleeve 19, so that the adhesive force is increased, and the butting cylinder 12 is conveniently driven to rotate.

In summary, the low-temperature plasma disinfection and sterilization device for the public toilet dryer is characterized in that the low-temperature plasma generation device 3 is arranged behind the dryer body 2, the low-temperature plasma generation device 3 adopts dielectric barrier discharge (DBD discharge) technology, has smaller equipment volume than other low-temperature plasma discharge technologies, is convenient to install, discharges the low-temperature plasma generation device 3 by using voltage, releases plasma jet, disinfects and sterilizes the interior of the dryer body 2 firstly, then disinfects and sterilizes hands of people, so that no bacteria are bred in the dryer body 2, effectively cuts off a virus propagation path, uses five piezoelectric ceramic electrodes 302 as discharge electrodes, can serve as transformers, realizes discharge voltages of more than 5000V, omits coil transformers, reduces the volume of the whole discharge device, and can serve as a high-temperature resistant material, The discharge electrode with long service life generates enough low-temperature plasma jet, the low-temperature plasma sterilization technology is adopted, chemical agents are not needed, the cost is low, and the like, the plasma is distributed in a diffuse manner in the dryer, no dead angle exists in sterilization, and in comparison, the pure ultraviolet sterilization easily generates sterilization dead angles due to the directivity of light, and the sterilization effect on fungi is poor; the main effective components of the low-temperature plasma comprise charged particles, active particles and free radicals (oxygen atoms, hydroxyl groups, active oxygen and active nitrogen), VUV and UVC wave band high-energy ultraviolet rays, thermal effect generated by discharge, bombardment of the charged particles and an alternating electric field, and the low-temperature plasma has a spectrum antibacterial effect on bacteria and fungi, has no chemical residue and drug resistance after being used, is efficient in sterilization, and is environment-friendly and safe; the temperature of the low-temperature plasma is 40-60 ℃, compared with 100 ℃ hot water of a high-temperature sterilization method, the temperature is much lower, the aging of plastic elements and circuit components can not be caused, workers can not be scalded, particularly, the low-temperature plasma does not have any harm to users, the germ transmission caused by a dryer is blocked, the servo motor 4 is started to drive the screw rod 5 to rotate, the supporting plate 6 in threaded connection can drive the sliding block 8 to lift along the sliding groove 7, and therefore the height of the dryer body 2 can be conveniently regulated and controlled as required, and the high-temperature plasma can be conveniently suitable for people with different heights; rotate a butt joint section of thick bamboo 12 and make its and two arc pieces 11 separation, can make things convenient for to dismantle the separation between drying-machine body 2 and the backup pad 6, laminate the arc piece 11 of L type pole 9 tip and the arc piece 11 of montant 10 tip, rotate a butt joint section of thick bamboo 12, make its and two common threaded connection of arc piece 11, can accomplish the installation.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A low temperature plasma disinfection and sterilization device for public latrine drying-machine, including U template (1), drying-machine body (2) and low temperature plasma generating device (3), its characterized in that: the low-temperature plasma generating device (3) is fixedly installed at the back of the dryer body (2), the low-temperature plasma generating device (3) comprises a top cover (301), five piezoelectric ceramic electrodes (302) and a control circuit board (303), wherein four piezoelectric ceramic electrodes (302) are respectively and fixedly connected at four corners of the top cover (301), the other piezoelectric ceramic electrode (302) is fixedly connected at the center of the top cover (301), five piezoelectric ceramic electrodes (302) are kept away from one end of the top cover (301) and electrically connected with the control circuit board (303), a servo motor (4) is fixedly installed at the top of the U-shaped plate (1), a lead screw (5) is fixedly connected with the output end of the servo motor (4), the other end of the lead screw (5) penetrates through the top of the U-shaped plate (1) and extends downwards, the lead screw (5) is rotatably connected with the top of the U-shaped plate (1), and rotate through the bearing between the bottom of lead screw (5) and U template (1) and be connected, be equipped with backup pad (6) in U template (1), drying-machine body (2) are located the upper surface setting of backup pad (6), and are connected through dismouting mechanism between drying-machine body (2) and backup pad (6), lead screw (5) run through backup pad (6) and set up, and lead screw (5) and backup pad (6) threaded connection, spout (7) have been seted up on the lateral wall of the vertical portion of U template (1), one side fixedly connected with and spout (7) assorted slider (8) of backup pad (6), and slider (8) and spout (7) sliding connection.

2. The low-temperature plasma disinfection and sterilization device for the public toilet dryer according to claim 1, characterized in that: dismouting mechanism includes L type pole (9) of fixed connection at drying-machine body (2) back, the last fixed surface of backup pad (6) is connected with montant (10) corresponding with L type pole (9), arc piece (11) of the equal fixedly connected with half-cylinder structure in the end in opposite directions of L type pole (9) and montant (10), two arc piece (11) laminating setting each other, and the outside of two arc pieces (11) all is equipped with the external screw thread, the common cover is equipped with the butt joint section of thick bamboo (12) of matching on L type pole (9) and montant (10), and is equipped with the internal thread on the interior section of thick bamboo wall of butt joint section of thick bamboo (12), two arc piece (11) all are located and set up in butt joint section of thick bamboo (12), and two arc pieces (11) and the common threaded connection of connecting section of thick bamboo (12).

3. The low-temperature plasma disinfection and sterilization device for the public toilet dryer according to claim 1, characterized in that: the top and the bottom of the U-shaped plate (1) are fixedly connected with mounting blocks (13), and the mounting blocks (13) are symmetrically provided with positioning holes.

4. The low-temperature plasma disinfection and sterilization device for the public toilet dryer according to claim 1, characterized in that: the upper surface of the supporting plate (6) is provided with a butt joint groove (14) which is matched with the bottom of the dryer body (2), and the butt joint groove (14) is arranged with an opening at one side.

5. The low-temperature plasma disinfection and sterilization device for the public toilet dryer according to claim 1, characterized in that: ball groove (15) have been seted up to one side that slider (8) are close to spout (7) tank bottom, and install ball (16) that match in ball groove (15), ball (16) are kept away from the one end of ball groove (15) tank bottom and are passed the notch in ball groove (15) and outwards extend, and with the tank bottom roll connection of spout (7).

6. The low-temperature plasma disinfection and sterilization device for the public toilet dryer according to claim 1, characterized in that: the outer side of the servo motor (4) is provided with a protective cover (17), and the protective cover (17) is fixedly arranged at the top of the U-shaped plate (1).

7. The low-temperature plasma disinfection and sterilization device for the public toilet dryer according to claim 2, characterized in that: the wall of the L-shaped rod (9) is fixedly sleeved with a baffle ring (18), and the lower surface of the baffle ring (18) is attached to the top edge of the butt joint cylinder (12).

8. The low-temperature plasma disinfection and sterilization device for the public toilet dryer according to claim 2, characterized in that: and the outer cylinder wall of the butt joint cylinder (12) is fixedly sleeved with a matched anti-slip sleeve (19).