A vacuum plasma sterilization and disinfection device to avoid secondary contamination

Abstract

The present invention discloses a vacuum plasma sterilization and disinfection device for avoiding secondary pollution, and relates to the technical field of sterilization and disinfection. The vacuum plasma sterilization and disinfection device comprises a box body, a box door and a shell, wherein the box door is arranged on the front side of the box body, and the shell is arranged on the side of the box body away from the box door. Compared with the existing vacuum plasma sterilization and disinfection device, the present invention is provided with a circulation device, through which ozone and other substances remaining in the box body after sterilization and disinfection can be quickly removed. In addition, the circulation device can replace the internal failed catalytic unit at any time without stopping the machine. When the ozone and other substances remaining in the box body are purified, clean air is transported into the box body through an external fan, an air filter device and a second air inlet pipe, so as to avoid secondary pollution of the workpiece during the taking-out process. The present invention is also provided with a support mechanism, through which the physical shielding phenomenon of the contact area between the workpiece and the supporting component is eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of sterilization and disinfection, in particular to a vacuum plasma sterilization and disinfection device for avoiding secondary pollution. Background Art

[0002] In today's society, people are paying more and more attention to health and hygiene, and sterilization has become an indispensable part of many fields. Among them, vacuum plasma sterilization and disinfection equipment is widely used in major industries such as medical care, food, and electronic manufacturing due to its advantages such as large sterilization range, high sterilization efficiency, and no hidden dangers of chemical residues.

[0003] For example, the patents "CN220967772U A plasma sterilization and disinfection device" and "CN215082616U A plasma sterilization and repair device" each disclose a technical solution for sterilization and disinfection using plasma. However, most of the existing plasma sterilization and disinfection devices do not fully consider the problem of secondary pollution after work. After the sterilization and disinfection of the workpiece is completed, the untreated air from the outside can easily carry pollutants such as bacteria and dust into the plasma sterilization and disinfection device, thereby causing secondary pollution of the workpiece; in addition, the current plasma sterilization and disinfection device is usually provided with supporting components, but there will be contact areas between these supporting components and the workpiece, so that the workpiece cannot be fully exposed to the plasma environment, thereby affecting the sterilization and disinfection effect; finally, in order to ensure the effect of sterilization and disinfection, oxygen is usually used as a reactant to sterilize and disinfect the workpiece, but oxygen will produce substances such as ozone during the ionization process, and the existing plasma sterilization and disinfection device is usually unable to quickly eliminate the ozone and other substances remaining in the device after the work is completed. On the one hand, these residual ozone will damage the components inside the device, and on the other hand, it will affect human health after flowing into the external environment. Summary of the invention

[0004] The purpose of the present invention is to provide a vacuum plasma sterilization device which can avoid secondary contamination, so as to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vacuum plasma sterilization and disinfection device for avoiding secondary pollution, the vacuum plasma sterilization and disinfection device comprising a box body, a box door and a shell, the box door is arranged at the front side of the box body, the shell is arranged at a side of the box body away from the box door, a bracket is arranged inside the box body, a plurality of groups of supporting mechanisms are arranged inside the bracket from top to bottom, each group of supporting mechanisms is provided with a group of electrode plates, and two adjacent groups of electrode plates are arranged alternately with positive and negative poles, an air outlet pipe and a first air inlet pipe are arranged at one end of the box body close to the shell, the air outlet pipe is connected to an external vacuum system, and the first air inlet pipe is connected to an external gas supply system. When the present invention is working, the staff needs to place the workpiece on the supporting mechanism, then close the box body, and then evacuate the box body through the air outlet pipe and the external vacuum system, and then transport oxygen into the box body through the first air inlet pipe and the external gas supply system, and oxygen is transported into the box body through the two adjacent groups of electrode plates. Gas decomposition and ionization are carried out to sterilize and disinfect the workpiece. Compared with the current vacuum plasma sterilization and disinfection device, the present invention is provided with a second air inlet pipe and a circulation device, one end of the second air inlet pipe extends into the box body, and the other end of the second air inlet pipe is connected to the external fan. The air inlet end of the external fan is provided with an air filtering device, and the circulation device is arranged in the shell. After the workpiece is sterilized and disinfected, the ozone and other substances remaining in the box body after the sterilization and disinfection are first quickly removed by the circulation device to avoid the ozone remaining in the box body damaging the internal parts of the equipment or flowing to the external environment to affect human health after the box door is opened. After the ozone and other substances remaining in the box body are purified, clean air is transported into the box body through the external fan, the air filtering device and the second air inlet pipe to make the air pressure in the box body higher than the external environment, so that after the box door is opened, bacteria, viruses and other microorganisms in the external air are effectively prevented from entering the box body, so as to avoid the workpiece from being contaminated again during the removal process.

[0006] Furthermore, the supporting mechanism includes a mounting frame, a first linear motor, a supporting frame and a supporting rod. The mounting frame is provided with two groups. The two groups of mounting frames are relatively arranged at the two ends of the interior of the frame. A group of supporting frames is provided on the side close to each other of each group of mounting frames. Several groups of supporting rods are provided between the two groups of supporting frames. Several groups of grooves are provided on the side close to the frame of each group of mounting frames. A group of first linear motors are provided in each group of grooves. Each group of supporting frames is connected to the mounting frame through several groups of first linear motors. When the present invention is working, the workpiece is supported by several groups of supporting rods, and the lifting of the two groups of supporting frames is controlled by several groups of first linear motors, so that the staff can adjust the distance between the several groups of supporting rods and the electrode plates according to the size of the workpiece.

[0007] Furthermore, a group of partitions are provided at one end of each group of grooves close to the mounting frame, each group of partitions are made of plastic, a group of electromagnets are provided at the working end of each group of first linear motors, and each group of support frames are made of ferromagnetic materials. The present invention uses electromagnets to enable the support frame and the working end of the first linear motor to move synchronously, and reduces the dead angle in the box body through the partitions, thereby preventing the dead bodies of microorganisms from gathering on the first linear motor, thereby affecting the subsequent sterilization and disinfection of workpieces.

[0008] Furthermore, a rack and several groups of gears are provided inside the support frame, and a second linear motor is provided below the rack. Each group of gears is connected to a group of support rods, and several groups of gears are meshed with the rack. In the process of sterilizing and disinfecting the workpiece of the present invention, the second linear motor drives the rack to move back and forth, thereby causing the several groups of gears and several groups of support rods to rotate. When the several groups of support rods rotate, the workpiece located above the several groups of support rods will be positionally shifted, thereby ensuring that all areas of the workpiece can be sterilized. Compared with the current vacuum plasma sterilization and disinfection device, the present invention can ensure that the workpiece is exposed to the plasma environment in all directions, eliminating the physical shielding phenomenon in the contact area between the workpiece and the support component.

[0009] Furthermore, the support mechanism also includes a rubber strip, which is a rectangular structure and is arranged at the upper ends of the two groups of support frames. The rubber strip is used to prevent the workpiece from moving excessively on several groups of support rods, so that the workpiece is detached from several groups of support rods.

[0010] Furthermore, the circulation device includes a first exhaust pipe, a second exhaust pipe, a purification mechanism and an air pump. One end of the purification mechanism is connected to the box through the second exhaust pipe, the other end of the purification mechanism is connected to the air outlet end of the air pump through a connecting pipe, and the air inlet end of the air pump is connected to the box through the first exhaust pipe. After the workpiece is sterilized and disinfected, the staff can first turn on the air pump, and the air pump allows the gas in the box to flow along the connecting pipe, the purification mechanism and the second exhaust pipe, and the purification mechanism removes residual ozone and other substances in the box.

[0011] Furthermore, the purification mechanism includes a fixing frame, a first mounting seat, a purification frame, a second mounting seat and a connecting groove, the first mounting seat and the second mounting seat are relatively arranged at the inner two ends of the fixing frame, the purification frame is provided with a plurality of groups, the plurality of purification frames are arranged from top to bottom between the first mounting seat and the second mounting seat, the plurality of purification frames are connected end to end through a plurality of connecting grooves, one group of connecting grooves is connected to the connecting pipe, and the other group of connecting grooves is connected to the second exhaust pipe, each group of purification frames is provided with a group of first cavities, each group of first cavities is provided with a group of catalytic units, when the ozone-containing gas in the box enters the purification mechanism, it will flow along the plurality of first cavities and the plurality of connecting grooves, and the ozone will be quickly decomposed through the catalytic units in the plurality of first cavities to prevent the residual ozone in the box from damaging the internal parts of the equipment or flowing to the external environment and affecting human health after the box door is opened.

[0012] Furthermore, a group of end cover plates are provided at the side ends of each group of first cavities, and each group of end cover plates is connected to the first cavity by a first bolt. A baffle plate is provided on the side of the shell close to the end cover plate, and the baffle plate and the shell are detachably connected by a second bolt. According to the needs, the present invention can set a group of gas detection elements at the air outlet end of each group of first cavities, so that the staff can promptly discover the failure of the catalytic unit in a certain group of first cavities. When the failure of the catalytic unit in a certain group of first cavities is detected, the staff can replace the failed catalytic unit by removing the baffle plate and the corresponding end cover plate, thereby ensuring the normal operation of the subsequent purification mechanism.

[0013] Furthermore, a second cavity and a sealing assembly are provided inside the purification rack. The sealing assembly is provided with two groups. The two groups of sealing assemblies are relatively arranged at the two ends of the purification rack. The connection state between the first cavity and the second cavity and the connecting groove is controlled by the two groups of sealing assemblies. When the catalytic unit in the first cavity is not invalid, the second cavity is separated from the connecting groove by the two groups of sealing assemblies. At this time, the gas in the box will flow along the first cavity. When the catalytic unit in the first cavity is invalid, the first cavity is separated from the connecting groove by the two groups of sealing assemblies. At this time, the gas in the box will flow along the second cavity. Then the staff can directly take out the invalid catalytic unit and replace it with a new one. Compared with the current direct arrangement of the ozone decomposition device, the present invention can replace the invalid catalytic unit without stopping the machine, thereby ensuring that after the workpiece is sterilized and disinfected, the staff can open the box door after a short waiting time.

[0014] Furthermore, the sealing assembly includes a cylinder, a first sealing plate and a second sealing plate, the cylinder is fixedly installed in the connecting groove, the first sealing plate is arranged in the first cavity, the first sealing plate is connected to the working end of the cylinder, the second sealing plate is arranged between the first cavity and the second cavity, the side end of the second sealing plate is connected to the second cavity through a sealing spring rod, a first magnetic block is arranged at one end of the first sealing plate close to the second cavity, a second magnetic block is arranged at one end of the second sealing plate close to the first cavity, the ends of the first magnetic block and the second magnetic block close to each other repel each other, and when the first cavity is connected to the connecting groove, the first sealing plate is located on the side of the second sealing plate close to the catalytic unit, and the second sealing plate is connected to the first cavity. The second cavity is separated from the connecting groove by the second sealing plate. When the first cavity needs to be separated from the connecting groove, the staff can use the cylinder to move the first sealing plate to the upper side of the second sealing plate. At this time, the first cavity is separated from the connecting groove by the first sealing plate. At the same time, under the action of the first magnetic block and the second magnetic block, the second sealing plate will move down, thereby connecting the second cavity with the connecting groove. Through the above technical scheme, it is ensured that the staff can change the connection state between the first cavity and the second cavity and the connecting groove at any time, so as to facilitate the subsequent staff to replace the failed catalytic unit at any time without stopping the machine, and reduce the time for the staff to wait for the gas in the box to be completely purified after the workpiece is sterilized.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: compared with the current vacuum plasma sterilization and disinfection device, the present invention is provided with a second air inlet pipe and a circulation device, and the ozone and other substances remaining in the box after sterilization and disinfection can be quickly removed through the circulation device, so as to avoid the ozone remaining in the box damaging the internal parts of the equipment or flowing into the external environment to affect human health after the box door is opened; when the ozone and other substances remaining in the box are purified, clean air is transported into the box through the external fan, the air filter device and the second air inlet pipe, so that the air pressure in the box is higher than that of the external environment, so that after the box door is opened, bacteria, viruses and other microorganisms in the external air are effectively prevented from entering the box, so as to avoid the workpiece from being contaminated again during the removal process; and In addition, the circulation device in the present invention can replace the failed internal catalytic unit at any time without stopping the machine, thereby reducing the time for the staff to wait for the gas in the box to be completely purified after the workpiece is sterilized. The present invention is also provided with a supporting mechanism. Compared with the workpiece placement components currently used in the vacuum plasma sterilization and disinfection device, the supporting mechanism in the present invention can place workpieces of different sizes on the one hand, and on the other hand, it will produce fewer dead corners, avoiding the accumulation of microbial corpses in the dead corners. Finally, in the process of sterilization and disinfection, the supporting mechanism in the present invention eliminates the physical shielding of the contact area between the workpiece and the supporting component, thereby ensuring that the workpiece is fully exposed to the plasma environment and each area can be effectively sterilized and disinfected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the appearance of the present invention from a first viewing angle; Figure 2 This is a schematic diagram of the appearance of the present invention from a second viewing angle; Figure 3 It is a schematic diagram of the internal structure of the box of the present invention; Figure 4 It is a schematic diagram of the support mechanism structure of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the structure of the middle A part; Figure 6 It is a schematic diagram of the internal structure of the support frame of the present invention; Figure 7 It is a schematic diagram of the structure of the interior of the box body of the present invention near one end of the shell; Figure 8 It is a schematic diagram of the internal structure of the housing of the present invention; Fig. 9 It is a schematic diagram of the purification mechanism structure of the present invention; Fig.10 It is a schematic diagram of the internal structure of the purification rack of the present invention; Fig.11 For the present invention Fig.10 Schematic diagram of the structure of the middle B part; Fig.12 It is a schematic diagram of the position of the sealing component after the first cavity and the connecting groove are separated from each other in the present invention.

[0017] In the figure: 1, box body; 11, air outlet pipe; 12, first air inlet pipe; 13, second air inlet pipe; 14, block; 15, first exhaust pipe; 16, second exhaust pipe; 2, box door; 3, shell; 31, baffle; 32, purification mechanism; 321, fixing frame; 322, first mounting seat; 323, purification frame; 3231, first cavity; 3232, second cavity; 3233, catalytic unit; 3234, cylinder; 3235, first seal Sealing plate; 3236, second sealing plate; 324, second mounting seat; 325, connecting groove; 326, connecting pipe; 33, air pump; 4, bracket; 41, supporting mechanism; 411, mounting frame; 412, first linear motor; 4121, electromagnet; 413, rubber strip; 414, supporting frame; 4141, gear; 4142, rack; 4143, second linear motor; 415, support rod; 416, partition; 42, electrode plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0019] Example: Figure 1-Figure 8 As shown, the present invention provides a technical solution, a vacuum plasma sterilization and disinfection device for avoiding secondary pollution, the vacuum plasma sterilization and disinfection device comprises a box body 1, a box door 2 and a shell 3, the box door 2 is arranged on the front of the box body 1, the shell 3 is arranged on the side of the box body 1 away from the box door 2, a bracket 4 is arranged inside the box body 1, and a plurality of groups of supporting mechanisms 41 are arranged inside the bracket 4 from top to bottom, each group of supporting mechanisms 41 is provided with a group of electrode plates 42, and two adjacent groups of electrode plates 42 are arranged alternately with positive and negative poles, and the box body 1 is close to the shell 3. One end of the housing 1 is provided with an air outlet pipe 11 and a first air inlet pipe 12, the air outlet pipe 11 is connected to an external vacuum system, the first air inlet pipe 12 is connected to an external gas supply system, and a stopper 14 is provided at one end of the housing 1 near the first air inlet pipe 12. When the present invention is working, the staff needs to place the workpiece on the support mechanism 41, and then close the housing 1, and then evacuate the housing 1 through the air outlet pipe 11 and the external vacuum system, and deliver oxygen to the housing 1 through the first air inlet pipe 12 and the external gas supply system, and then pass the stopper 14. The oxygen intake is guided and dispersed, and the oxygen is decomposed and ionized through two adjacent groups of electrode plates 42, so as to sterilize and disinfect the workpiece. Compared with the current vacuum plasma sterilization and disinfection device, the present invention is provided with a second air intake pipe 13 and a circulation device, one end of the second air intake pipe 13 extends into the box body 1, and the other end of the second air intake pipe 13 is connected to the external fan. The air intake end of the external fan is provided with an air filter device, and the circulation device is arranged in the shell 3. After the workpiece is sterilized and disinfected, the ozone and other substances remaining in the box body 1 after the sterilization and disinfection are first quickly removed by the circulation device to avoid the residual ozone in the box body 1 damaging the internal parts of the equipment or flowing to the external environment to affect human health after the box door 2 is opened. After the ozone and other substances remaining in the box body 1 are purified, clean air is transported into the box body 1 through the external fan, the air filter device and the second air intake pipe 13, so that the air pressure in the box body 1 is higher than that of the external environment, so that after the box door 2 is opened, bacteria, viruses and other microorganisms in the external air are effectively prevented from entering the box body 1, and the workpiece is prevented from being secondary contaminated during the removal process.

[0020] like Figure 3-Figure 5As shown, the support mechanism 41 includes a mounting frame 411, a first linear motor 412, a support frame 414 and a support rod 415. The mounting frame 411 is provided with two groups. The two groups of mounting frames 411 are relatively arranged at the two ends of the inside of the bracket 4. A group of support frames 414 is arranged on the side close to each other of each group of mounting frames 411, and several groups of support rods 415 are arranged between the two groups of support frames 414. A plurality of groups of grooves are arranged on the side close to the bracket 4 of each group of mounting frames 411, and a group of first linear motors 412 are arranged in each group of grooves. Each group of support frames 414 is connected to the mounting frame 411 through several groups of first linear motors 412. When the present invention is working, the workpiece is supported by several groups of support rods 415, and the lifting of the two groups of support frames 414 is controlled by several groups of first linear motors 412, so as to facilitate the staff to adjust the distance between the several groups of support rods 415 and the electrode plate 42 according to the size of the workpiece.

[0021] like Figure 5 As shown, a group of partitions 416 are provided at one end of each group of grooves close to the mounting frame 411, and each group of partitions 416 are made of plastic. A group of electromagnets 4121 are provided at the working end of each group of first linear motors 412, and each group of support frames 414 are made of ferromagnetic materials. The present invention enables the support frame 414 and the working end of the first linear motor 412 to move synchronously through the electromagnet 4121, and reduces the dead angle in the box body 1 through the partition 416, so as to avoid the accumulation of dead microorganisms on the first linear motor 412, so as to affect the subsequent sterilization and disinfection of workpieces.

[0022] like Figure 5-Figure 6 As shown, a rack 4142 and several groups of gears 4141 are provided inside the support frame 414, and a second linear motor 4143 is provided below the rack 4142. Each group of gears 4141 is connected to a group of support rods 415, and several groups of gears 4141 are meshed with the rack 4142. In the process of sterilizing and disinfecting the workpiece of the present invention, the second linear motor 4143 drives the rack 4142 to move back and forth, thereby causing the several groups of gears 4141 and several groups of support rods 415 to rotate. When the several groups of support rods 415 rotate, the workpiece located above the several groups of support rods 415 will be positionally shifted, thereby ensuring that all areas of the workpiece can be sterilized. Compared with the current vacuum plasma sterilization and disinfection device, the present invention can ensure that the workpiece is exposed to the plasma environment in all directions, eliminating the physical shielding phenomenon in the contact area between the workpiece and the support component.

[0023] like Figure 5-Figure 6 As shown, the support mechanism 41 also includes a rubber strip 413, which is a rectangular structure and is arranged at the upper end of two groups of support frames 414. The rubber strip 413 prevents the workpiece from moving excessively on the several groups of support rods 415, so that the workpiece is detached from the several groups of support rods 415.

[0024] like Figure 7-Figure 8 As shown, the circulation device includes a first exhaust pipe 15, a second exhaust pipe 16, a purification mechanism 32 and an air pump 33. One end of the purification mechanism 32 is connected to the box body 1 through the second exhaust pipe 16, and the other end of the purification mechanism 32 is connected to the air outlet end of the air pump 33 through the connecting pipe 326. The air inlet end of the air pump 33 is connected to the box body 1 through the first exhaust pipe 15. In the present invention, after the workpiece is sterilized, the staff can first turn on the air pump 33, and the air in the box body 1 is made to flow along the connecting pipe 326, the purification mechanism 32, and the second exhaust pipe 16 through the air pump 33, and the ozone and other substances remaining in the box body 1 are removed through the purification mechanism 32.

[0025] like Figure 8-Figure 10 As shown, the purification mechanism 32 includes a fixing frame 321, a first mounting seat 322, a purification frame 323, a second mounting seat 324 and a connecting groove 325. The first mounting seat 322 and the second mounting seat 324 are relatively arranged at the two ends of the interior of the fixing frame 321. The purification frame 323 is provided with a plurality of groups. The plurality of groups of purification frames 323 are arranged from top to bottom between the first mounting seat 322 and the second mounting seat 324. The plurality of groups of purification frames 323 are connected end to end through a plurality of groups of connecting grooves 325. One group of connecting grooves 325 is connected to the connecting pipe 326, and the other group of connecting grooves 325 is connected to the connecting pipe 326. 5 is connected to the second exhaust pipe 16, each group of purification racks 323 is provided with a group of first cavities 3231, and each group of first cavities 3231 is provided with a group of catalytic units 3233. When the gas containing ozone in the box body 1 enters into the purification mechanism 32, it will flow along the plurality of first cavities 3231 and the plurality of connecting grooves 325, and the ozone will be quickly decomposed by the catalytic units 3233 in the plurality of first cavities 3231, so as to prevent the residual ozone in the box body 1 from damaging the internal parts of the equipment or flowing to the external environment to affect human health after the box door 2 is opened.

[0026] like Figure 8-Figure 10 As shown, a group of end cover plates are provided at the side end of each group of first cavities 3231, and each group of end cover plates is connected to the first cavity 3231 by a first bolt. A baffle plate 31 is provided on the side of the shell 3 close to the end cover plate, and the baffle plate 31 and the shell 3 are detachably connected by a second bolt. According to the needs, the present invention can set a group of gas detection elements at the air outlet end of each group of first cavities 3231, so that the staff can promptly discover the failure of the catalytic unit 3233 in a certain group of first cavities 3231. When the failure of the catalytic unit 3233 in a certain group of first cavities 3231 is detected, the staff can replace the failed catalytic unit 3233 by removing the baffle plate 31 and the corresponding end cover plate, thereby ensuring the normal operation of the subsequent purification mechanism 32.

[0027] like Figure 8-Figure 12As shown, the purification rack 323 is further provided with a second cavity 3232 and a sealing assembly inside. The sealing assembly is provided with two groups. The two groups of sealing assemblies are relatively arranged at the two ends of the purification rack 323. The two groups of sealing assemblies are used to control the connection state between the first cavity 3231 and the second cavity 3232 and the connecting groove 325. When the catalytic unit 3233 in the first cavity 3231 is not invalid, the second cavity 3232 is separated from the connecting groove 325 by the two groups of sealing assemblies. At this time, the gas in the box body 1 will flow along the first cavity 3231. When the first cavity When the catalytic unit 3233 in 3231 fails, the first cavity 3231 is separated from the connecting groove 325 by two sets of sealing components. At this time, the gas in the box body 1 will flow along the second cavity 3232, and then the staff can directly take out the failed catalytic unit 3233 and replace it with a new catalytic unit 3233. Compared with the current direct setting of the ozone decomposition device, the present invention can replace the failed catalytic unit 3233 without stopping the machine, thereby ensuring that after the workpiece is sterilized, the staff can open the box door 2 after a short waiting time.

[0028] like Figure 8-Figure 12 As shown, the sealing assembly includes a cylinder 3234, a first sealing plate 3235 and a second sealing plate 3236. The cylinder 3234 is fixedly installed in the connecting groove 325. The first sealing plate 3235 is arranged in the first cavity 3231. The first sealing plate 3235 is connected to the working end of the cylinder 3234. The second sealing plate 3236 is arranged between the first cavity 3231 and the second cavity 3232. The side end of the second sealing plate 3236 is connected to the second cavity 3232 through a sealing spring rod. The sealing plate 3235 is provided with a first magnetic block at one end close to the second cavity 3232, and the second sealing plate 3236 is provided with a second magnetic block at one end close to the first cavity 3231. The first magnetic block and the second magnetic block repel each other at their respective ends. When the first cavity 3231 is connected to the connecting groove 325, the first sealing plate 3235 is located at a side of the second sealing plate 3236 close to the catalytic unit 3233, and the second cavity 3232 is separated from the connecting groove 325 by the second sealing plate 3236 (such as Fig.11 As shown in FIG. 3 ), when it is necessary to separate the first cavity 3231 from the connecting groove 325, the staff can use the cylinder 3234 to move the first sealing plate 3235 to the upper side of the second sealing plate 3236. At this time, the first cavity 3231 is separated from the connecting groove 325 by the first sealing plate 3235 (as shown in FIG. 3 ). Fig.12As shown), at the same time, under the action of the first magnetic block and the second magnetic block, the second sealing plate 3236 will move downward, thereby connecting the second cavity 3232 with the connecting groove 325. Through the above technical solution, it is ensured that the staff can change the connection state of the first cavity 3231 and the second cavity 3232 with the connecting groove 325 at any time, so as to facilitate the subsequent staff to replace the failed catalytic unit 3233 at any time without stopping the machine, thereby reducing the time for the staff to wait for the gas in the box 1 to be completely purified after the workpiece is sterilized.

[0029] The working principle of the present invention is as follows: during operation, the workpiece is placed on the support mechanism 41, and then the box 1 is closed, and then the box 1 is evacuated through the air outlet pipe 11 and the external vacuum system, oxygen is transported into the box 1 through the first air inlet pipe 12 and the external gas supply system, and the oxygen is decomposed and ionized through two adjacent groups of electrode plates 42 to sterilize the workpiece. During the process of sterilizing the workpiece, the second linear motor 4143 is turned on to cause the workpiece located above the several groups of support rods 415 to deviate, thereby ensuring that all areas of the workpiece can be sterilized. After the workpiece is sterilized, The staff can first turn on the air pump 33, and through the air pump 33, the gas in the box 1 flows along the connecting pipe 326, the purification mechanism 32, and the second exhaust pipe 16, and the ozone and other substances remaining in the box 1 are removed through the purification mechanism 32. After the ozone and other substances remaining in the box 1 are purified, clean air is transported into the box 1 through the external fan, the air filter device and the second air inlet pipe 13, so that the air pressure in the box 1 is higher than the external environment, so that after the box door 2 is opened, bacteria, viruses and other microorganisms in the outside air are effectively prevented from entering the box 1, thereby avoiding secondary contamination of the workpiece during the removal process.

[0030] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. The embodiments should therefore be considered exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A vacuum plasma sterilization and disinfection device for avoiding secondary contamination, characterized in that: The vacuum plasma sterilization and disinfection device comprises a box body (1), a box door (2) and a shell (3), wherein the box door (2) and the shell (3) are arranged on opposite sides of the box body (1), a bracket (4) is arranged inside the box body (1), and a plurality of groups of supporting mechanisms (41) are arranged inside the bracket (4) from top to bottom, each group of supporting mechanisms (41) is provided with a group of electrode plates (42), and two adjacent groups of electrode plates (42) are arranged alternately in positive and negative polarity, and an air outlet pipe (11), a first air inlet pipe (12) and a second air inlet pipe (13) are arranged at one end of the box body (1) close to the shell (3), wherein the air outlet pipe (11) is connected to an external vacuum system, the first air inlet pipe (12) is connected to an external gas supply system, and the second air inlet pipe (13) is connected to an external fan and an air filter device, and a circulation device is arranged inside the shell (3), and the residue in the box body (1) after sterilization and disinfection is removed by the circulation device.

2. A vacuum plasma sterilization and disinfection device for avoiding secondary contamination according to claim 1, characterized in that: The support mechanism (41) comprises a mounting frame (411), a first linear motor (412), a support frame (414) and a support rod (415); the mounting frame (411) is provided with two groups, the two groups of mounting frames (411) are arranged at two opposite ends inside the support (4); a group of support frames (414) is arranged on a side close to each other of each group of mounting frames (411); a plurality of groups of support rods (415) are arranged between the two groups of support frames (414); a plurality of groups of grooves are arranged on a side close to the support (4) of each group of mounting frames (411); a group of first linear motors (412) are arranged in each group of grooves; and each group of support frames (414) is connected to the mounting frame (411) via the plurality of groups of first linear motors (412).

3. A vacuum plasma sterilization and disinfection device for avoiding secondary contamination according to claim 2, characterized in that: A group of partitions (416) is provided at one end of each group of grooves close to the mounting frame (411), and each group of partitions (416) is made of plastic material. A group of electromagnets (4121) is provided at the working end of each group of first linear motors (412), and each group of support frames (414) is made of ferromagnetic material.

4. A vacuum plasma sterilization and disinfection device for avoiding secondary contamination according to claim 2, characterized in that: A rack (4142) and a plurality of groups of gears (4141) are arranged inside the support frame (414); a second linear motor (4143) is arranged below the rack (4142); each group of gears (4141) is connected to a group of support rods (415); and a plurality of groups of gears (4141) are meshed with the rack (4142).

5. A vacuum plasma sterilization and disinfection device for avoiding secondary contamination according to claim 2, characterized in that: The support mechanism (41) further comprises a rubber strip (413), the rubber strip (413) being a rectangular structure, and the rubber strip (413) being arranged at the upper ends of the two groups of support frames (414).

6. A vacuum plasma sterilization and disinfection device for avoiding secondary contamination according to claim 1, characterized in that: The circulation device comprises a first exhaust pipe (15), a second exhaust pipe (16), a purification mechanism (32) and an air pump (33); one end of the purification mechanism (32) is connected to the housing (1) via the second exhaust pipe (16); the other end of the purification mechanism (32) is connected to the air outlet end of the air pump (33) via a connecting pipe (326); and the air inlet end of the air pump (33) is connected to the housing (1) via the first exhaust pipe (15).

7. A vacuum plasma sterilization and disinfection device for avoiding secondary contamination according to claim 6, characterized in that: The purification mechanism (32) comprises a fixing frame (321), a first mounting seat (322), a purification frame (323), a second mounting seat (324) and a connecting groove (325); the first mounting seat (322) and the second mounting seat (324) are arranged opposite to each other at two ends of the fixing frame (321); the purification frame (323) is provided with a plurality of groups; the plurality of groups of purification frames (323) are arranged from top to bottom between the first mounting seat (322) and the second mounting seat (324); the plurality of groups of purification frames (323) are connected end to end through a plurality of groups of connecting grooves (325); one group of connecting grooves (325) is connected to a connecting pipe (326); another group of connecting grooves (325) is connected to a second exhaust pipe (16); each group of purification frames (323) is provided with a group of first cavities (3231); each group of first cavities (3231) is provided with a group of catalytic units (3233).

8. A vacuum plasma sterilization and disinfection device for avoiding secondary contamination according to claim 7, characterized in that: A group of end cover plates are provided at the side ends of each group of first cavities (3231), and each group of end cover plates are connected to the first cavities (3231) via first bolts; a baffle plate (31) is provided on one side of the shell (3) close to the end cover plates, and the baffle plate (31) is detachably connected to the shell (3) via second bolts.

9. A vacuum plasma sterilization and disinfection device for avoiding secondary contamination according to claim 8, characterized in that: A second cavity (3232) and a sealing component are also provided inside the purification rack (323), and two groups of sealing components are provided, and the two groups of sealing components are arranged opposite to each other at two ends of the purification rack (323).

10. A vacuum plasma sterilization and disinfection device for avoiding secondary contamination according to claim 9, characterized in that: The sealing assembly comprises a cylinder (3234), a first sealing plate (3235) and a second sealing plate (3236); the cylinder (3234) is fixedly mounted in the connecting groove (325); the first sealing plate (3235) is arranged in the first cavity (3231); the first sealing plate (3235) is connected to the working end of the cylinder (3234); the second sealing plate (3236) is arranged between the first cavity (3231) and the second cavity (3232); the side end of the second sealing plate (3236) is connected to the second cavity (3232) via a sealing spring rod; a first magnetic block is arranged at one end of the first sealing plate (3235) close to the second cavity (3232); a second magnetic block is arranged at one end of the second sealing plate (3236) close to the first cavity (3231); and the ends of the first magnetic block and the second magnetic block close to each other repel each other.

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