Device for improving VHP sterilization vaporized hydrogen peroxide concentration of isolator

Abstract

The utility model relates to the technical field of isolators, and discloses a device for improving the VHP sterilization vaporized hydrogen peroxide concentration of an isolator, which comprises a sterilization mechanism, an air inlet mechanism and an air return mechanism, the sterilization mechanism comprises an operation cabin and a delivery cabin which are integrally mounted, a first air-tight door and a second air-tight door which are mounted in a switch mode are respectively arranged on the operation cabin and the delivery cabin, and a temperature and humidity sensor, a concentration sensor and a pressure difference transmitter are respectively mounted in the position, above the first air-tight door, of the operation cabin. According to the device and the method for improving the VHP sterilization vaporized hydrogen peroxide concentration of the isolator, the problems that as the sterilization process is carried out, the humidity in the isolator is gradually increased, when the humidity in the isolator is at a higher level, the condensation of vaporized hydrogen peroxide is accelerated and far exceeds a trace condensation state, and the vaporized hydrogen peroxide is decomposed into water and oxygen; further, the concentration of vaporized hydrogen peroxide in the isolator cabin body is influenced, and adverse effects on the killing effect are generated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of isolator, concretely to a device for improving the concentration of vaporized hydrogen peroxide of VHP sterilization of isolator. BACKGROUND

[0002] The isolator is a kind of equipment for sterilization in pharmaceutical industry, more than 90% of which is "sterilized" using vaporized hydrogen peroxide (VHP), and hydrogen peroxide is only water and oxygen after decomposition, which is more environmentally friendly and safe than formaldehyde, ozone and other disinfection methods, so it is also widely used in disinfection of clean room, laboratory and other environments.

[0003] The basic principle of the current sterilization system is to send hydrogen peroxide solution to the evaporation tray of the isolator, evaporate it into vaporized hydrogen peroxide by heating the evaporation tray, and circulate it inside the isolator cabin, so that the surface of the sterilized environment is fully contacted within the verified time, so that a small amount of condensation of hydrogen peroxide is formed on the surface, thereby quickly killing the microorganisms on the surface.

[0004] The current technical problem is that, along with the evaporation of hydrogen peroxide solution in the evaporation tray, a large amount of water vapor is generated at the same time as the vaporized hydrogen peroxide, and as the sterilization process proceeds, the humidity in the isolator also gradually rises, when the humidity in the isolator is at a high level, it will accelerate the condensation of vaporized hydrogen peroxide, far exceeding the state of trace condensation, decomposing into water and oxygen, and then affecting the concentration of vaporized hydrogen peroxide in the isolator cabin, and having adverse effects on the killing effect. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a device and method for improving the concentration of vaporized hydrogen peroxide of VHP sterilization of isolator, which solves the problems mentioned in the above background.

[0006] The utility model provides the following technical scheme: a device for improving the concentration of vaporized hydrogen peroxide of VHP sterilization of isolator, comprising: a sterilization mechanism, an air inlet mechanism and a gas return mechanism;

[0007] The sterilization mechanism comprises an integrated operation cabin and a delivery cabin, the operation cabin and the delivery cabin are respectively provided with a first sealed door and a second sealed door installed in a switch mode, the operation cabin is provided with a temperature and humidity sensor, a concentration sensor and a differential pressure transmitter inside above the first sealed door, the display of the temperature and humidity sensor, the concentration sensor and the differential pressure transmitter all penetrates the front wall of the operation cabin and is sealingly installed therewith, the operation cabin is provided with an evaporation mechanism inside close to the side, two through grooves are provided on the partition layer between the operation cabin and the delivery cabin in a penetrating mode, and a delivery mechanism and an air guide cover are respectively arranged on the two through grooves, a storage table is arranged on the through groove above the air guide cover in the operation cabin, and a supporting leg is arranged on the bottom of the delivery cabin.

[0008] The air inlet mechanism comprises an air feeding mechanism installed on the top of the operation cabin, the top of the air feeding mechanism is connected with the air return mechanism, and the side of the air feeding mechanism is provided with an air drying mechanism, one end of the air drying mechanism away from the air feeding mechanism is connected with sterile dry compressed air;

[0009] The air return mechanism comprises an air return cover installed on the side of the operation cabin, the side of the air return cover close to the bottom end is connected with the air guide cover through the end of the delivery cabin, the bottom of the air return cover is connected with the inside of the delivery cabin through the installation of the air guide pipe, the air return cover is sequentially provided with a waste filter mechanism and an air return pipe along the direction of the steam flow, and the top of the waste filter mechanism is provided with a pressure relief valve.

[0010] Preferably, the air drying mechanism comprises a throttle valve, the air outlet end of the throttle valve is installed on the air inlet of the side of the air feeding mechanism, the air inlet end of the throttle valve is sequentially connected with a related shut-off valve, a flow meter and a pressure regulating valve through pipelines in the reverse direction of the gas flow, the air inlet end of the pressure regulating valve is provided with a three-way pipe through a pipeline, the other two interfaces of the three-way pipe are respectively provided with a pressure transmitter and a total switch hand valve through pipelines, and the air inlet of the total switch hand valve is connected with sterile dry compressed air.

[0011] Preferably, the waste filter mechanism comprises a waste filter cover, the bottom of the inner wall of the waste filter cover is provided with a second high-efficiency filter, and the side of the inner wall of the waste filter cover is provided with a second axial flow fan, and the position of the second axial flow fan corresponds to the position of the air return pipe.

[0012] Preferably, the air feeding mechanism comprises an air guide shell, the air drying mechanism is installed on the side of the air guide shell, the air return pipe is installed on the top of the air guide shell, the center of the inside of the air guide shell is provided with a static pressure box, the air guide shell and the static pressure box are both sealingly installed on the top of the operation cabin, the top of the static pressure box is provided with a first axial flow fan, and the position of the first axial flow fan corresponds to the position of the air outlet of the air return pipe.

[0013] Preferably, the front and back sides of the static pressure box are provided with air inlet channels, the first high-efficiency filter is installed in the air inlet channel of the static pressure box, and the bottom of the static pressure box is provided with air guide plates which are extended downward into the inside of the operation cabin.

[0014] Preferably, the side of the static pressure box is provided with a steam pipe in a penetrating mode, one end of the steam pipe away from the static pressure box penetrates the air guide shell and is installed on the evaporation mechanism arranged in the operation cabin.

[0015] Preferably, the delivery mechanism comprises a delivery table located inside the delivery cabin, sliding rods are installed at the four corners of the delivery table, a top pressing plate is installed at the top of the sliding rods, a placing table is arranged on the top pressing plate, an internally threaded sleeve is integrally arranged on one side of the delivery table, a lead screw is arranged in the internally threaded sleeve, the top of the lead screw is rotatably arranged in the delivery cabin through a bearing, and the bottom of the lead screw penetrates through the delivery cabin and is connected with the output shaft of the motor installed at the bottom of the delivery cabin.

[0016] Preferably, the sliding rods are slidingly arranged on the partition layer between the operation cabin and the delivery cabin, and rubber rings are arranged at the outer edges of the upper surface of the delivery table and the lower surface of the top pressing plate.

[0017] Preferably, the placing table comprises a sterilization plate, a side guide shell is formed on one side of the sterilization plate, and a through hole is formed in the side surface of the side guide shell, and the ventilation direction of the through hole is aligned with the delivery mechanism.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The device and method for improving the VHP sterilization vaporized hydrogen peroxide concentration of the isolator, by arranging an air drying mechanism, sterile dry compressed air is injected into the isolator, a filtering air flow containing water vapor after return air is mixed with the sterile dry compressed air by using a gas feeding mechanism, the humidity in the isolator during VHP sterilization is reduced, the condensation of vaporized hydrogen peroxide is avoided, the effect of controlling the vaporized hydrogen peroxide concentration in the isolator cabin is achieved, the VHP sterilization vaporized hydrogen peroxide concentration of the isolator is improved, and the VHP sterilization efficiency is ensured.

[0020] 2. The device and method for improving the VHP sterilization vaporized hydrogen peroxide concentration of the isolator, by arranging a delivery mechanism, during the sterilization process of the isolator, the lifting of the delivery mechanism is controlled, according to the difference in sterilization time of the sterilized objects, the sterilized objects are placed in the delivery mechanism, the delivery cabin is isolated by blocking the through slot after the delivery mechanism is lowered, and the sterilized objects in the sterilization process can be directly taken out without waiting for all the objects to be sterilized together. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the side view structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the operation cabin of the utility model;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the gas feeding mechanism of the utility model;

[0025] Figure 5 The utility model discloses Figure 4 Amplification structure schematic diagram at middle A place;

[0026] Figure 6 The utility model discloses

[0027] Figure 7 The utility model discloses

[0028] Figure 8 The utility model discloses

[0029] In the drawing: 1, operating cabin;2, delivery cabin;3, gas delivery mechanism;31, air guide shell;32, static pressure box;33, first axial flow fan;34, first high efficiency filter;35, steam pipe;36, air guide plate;4, air drying mechanism;41, throttle valve;42, shut-off valve;43, flowmeter;44, pressure regulating valve;45, three-way pipe;46, pressure transmitter;47, total switch hand valve;5, return air cover;6, filter waste mechanism;61, filter waste cover;62, second axial flow fan;63, second high efficiency filter;7, pressure relief valve;8, return air pipe;9, first airtight door;10, evaporation mechanism;11, temperature and humidity sensor;12, concentration sensor;13, differential pressure transmitter;14, second airtight door;15, supporting leg;16, delivery mechanism;161, delivery table;162, sliding rod;163, top pressing plate;164, placing table;165, internal thread sleeve;166, screw rod;167, motor;17, air guide cover;18, object placing table;181, sterilization plate;182, side guide shell;183, through-flow hole;19, air guide pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, but not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the utility model.

[0031] Please refer to Figures 1-8 A device and method for improving the concentration of vaporized hydrogen peroxide in a sterilizer VHP, comprising: a sterilization mechanism, an air inlet mechanism and a gas return mechanism.

[0032] The sterilization mechanism comprises an integrated operation cabin 1 and a delivery cabin 2, the operation cabin 1 and the delivery cabin 2 are respectively provided with a first airtight door 9 and a second airtight door 14 which are installed in an on-off mode, the operation cabin 1 is provided with a temperature and humidity sensor 11, a concentration sensor 12 and a differential pressure transmitter 13 which are respectively installed in an inner part above the first airtight door 9, the displays of the temperature and humidity sensor 11, the concentration sensor 12 and the differential pressure transmitter 13 are all penetrated through the front wall of the operation cabin 1 and are sealedly installed, an evaporation mechanism 10 is arranged in an inner part close to the side of the operation cabin 1, two through grooves are provided on the partition layer between the operation cabin 1 and the delivery cabin 2 in a penetrating mode, and a delivery mechanism 16 and a gas guide cover 17 are respectively arranged on the two through grooves, a storage table 18 is arranged in the through groove of the operation cabin 1 and is located directly above the gas guide cover 17, and a supporting leg 15 is arranged on the bottom of the delivery cabin 2, wherein the temperature and humidity sensor 11 can adopt a common type on the market HH-1 and other types suitable for hydrogen peroxide environment, the concentration sensor 12 can adopt a common type on the market such as B12-34-7-2000-1C, TEC-H2O2 gas detection probe and Deluge hydrogen peroxide gas sensor HC6809675;

[0033] The air inlet mechanism comprises an air feeding mechanism 3 installed on the top of the operation cabin 1, the top of the air feeding mechanism 3 is connected with the air return mechanism and the side surface of the air feeding mechanism 3 is provided with an air drying mechanism 4, and the end of the air drying mechanism 4 away from the air feeding mechanism 3 is connected with sterile dry compressed air;

[0034] The air return mechanism comprises an air return cover 5 installed on the side of the operation cabin 1, the side surface close to the bottom end of the air return cover 5 is connected with the end of the delivery cabin 2 penetrating the gas guide cover 17, and the bottom of the air return cover 5 is connected with the inside of the delivery cabin 2 through the installation of a gas guide pipe 19, the air return cover 5 is sequentially provided with a waste filtering mechanism 6 and an air return pipe 8 along the steam flow direction, and the top of the waste filtering mechanism 6 is provided with a pressure relief valve 7, wherein the pressure relief valve 7 adopts an electric valve, when the isolator is sterilized, the pressure in the cabin body will rise with the injection of compressed air, and the pressure in the cabin body is maintained within a set range by the intermittent opening and closing of the pressure relief valve 7.

[0035] The air drying mechanism 4 comprises a throttle valve 41, the air outlet end of the throttle valve 41 is installed on the air inlet of the side surface of the air feeding mechanism 3, the air inlet end of the throttle valve 41 sequentially passes through a pipeline to connect a related valve 42, a flow meter 43 and a pressure regulating valve 44 in reverse gas flow direction, the air inlet end of the pressure regulating valve 44 is provided with a three-way pipe 45 through a pipeline, the other two interfaces of the three-way pipe 45 are respectively provided with a pressure transmitter 46 and a total switch hand valve 47 through a pipeline, and the air inlet of the total switch hand valve 47 is connected with sterile dry compressed air;

[0036] In addition, the total switch hand valve 47 adopts a manual valve, which is used for opening and closing the total gas source, and is in a normally open state in a normal state and is closed when the gas circuit is overhauled;

[0037] The pressure transmitter 46 can adopt a pressure transmitter 46 without display for monitoring the pressure of the gas source;

[0038] The pressure regulating valve 44 can adopt a filtering pressure regulating valve 44 for adjusting the pressure of the gas circuit to provide appropriate pressure for subsequent components;

[0039] The flow meter 43 can adopt a flow sensor for monitoring the amount of compressed air injected into the isolator;

[0040] The shut-off valve 42 can adopt an electric valve for opening and closing the injection of compressed air, which is automatically opened when the sterilization program of the isolator runs to the sterilization stage;

[0041] The throttle valve 41 can adopt a step-adjustable throttle valve 41 for adjusting the amount of compressed air injected into the isolator.

[0042] The filter 6 includes a filter cover 61, a second high-efficiency filter 63 is installed on the bottom of the inner wall of the filter cover 61, and a second axial flow fan 62 is installed on the side of the inner wall of the filter cover 61. The position of the second axial flow fan 62 corresponds to the position of the return air pipe 8. As the return air passes through the return air cover 5 and enters the filter 6, the second high-efficiency filter 63 directly filters the return air, allowing the air in the isolator to circulate.

[0043] The air supply mechanism 3 includes an air guide shell 31, the air drying mechanism 4 is installed on the side of the air guide shell 31, the return air pipe 8 is installed on the top of the air guide shell 31, a static pressure tank 32 is arranged at the center of the inside of the air guide shell 31, the air guide shell 31 and the static pressure tank 32 are both sealed and installed on the top of the operation cabin 1, the first axial flow fan 33 is installed between the top of the static pressure tank 32 and the air guide shell 31, and the position of the first axial flow fan 33 corresponds to the position of the outlet of the return air pipe 8. The sterile dry compressed air is introduced into the air guide shell 31 by the air drying mechanism 4, so that the sterile dry compressed air is mixed with the circulating air, the humidity in the circulating air is reduced, and excessive decomposition of hydrogen peroxide into water and oxygen is avoided.

[0044] The front and back sides of the static pressure tank 32 are provided with air inlet channels, and the first high-efficiency filter 34 is installed in the air inlet channel of the static pressure tank 32. The air guide plate 36 is extended downward from the four corners of the bottom of the static pressure tank 32 into the inside of the operation cabin 1. By installing the first high-efficiency filter 34, the sterile dry compressed air is filtered first before being mixed with the circulating air, removing impurities therein.

[0045] The side of the static pressure box 32 is provided with a steam pipe 35 in a penetrating manner, one end of the steam pipe 35 penetrating the air guide shell 31 and being arranged on the evaporation mechanism 10 arranged in the operation cabin 1, and the air outlet of the steam pipe 35 is below the first axial flow fan 33 and can be directly blown by the first axial flow fan 33, mixed with the backflow air and the sterile dry compressed air synchronously entering the static pressure box 32 to form the sterilization gas blown downward.

[0046] The delivery mechanism 16 comprises a delivery table 161 arranged in the interior of the delivery cabin 2, sliding rods 162 arranged at four corners of the delivery table 161, top pressing plates 163 arranged at the top of the sliding rods 162, placement tables 164 arranged on the top pressing plates 163, an inner threaded sleeve 165 arranged at one side of the delivery table 161 in an integral manner, a lead screw 166 arranged in the interior of the inner threaded sleeve 165 in a threaded manner, the top of the lead screw 166 being rotatably arranged in the delivery cabin 2 through a bearing, and the bottom of the lead screw 166 penetrating the delivery cabin 2 and being assembled with the output shaft of a motor 167 arranged at the bottom of the delivery cabin 2, so that the sterilization articles can also be directly delivered from the bottom to the operation cabin 1 by the lifting capacity of the delivery mechanism 16, without the need of opening the first sealing door 9 to expose the operation cabin 1 to the external air.

[0047] The sliding rods 162 slidingly penetrate the partition layer between the operation cabin 1 and the delivery cabin 2, and rubber rings are arranged at the outer edges of the upper surface of the delivery table 161 and the lower surface of the top pressing plate 163, so that the delivery table 161 and the top pressing plate 163 can press on the partition layer when the delivery mechanism 16 is raised and lowered, to achieve the isolation effect of the operation cabin 1 and the delivery cabin 2, and when the delivery mechanism 16 is raised, the gas in the operation cabin 1 can enter the delivery cabin 2 through the through slot, and then the gas in the delivery cabin 2 can be pushed into the back air cover 5, to avoid the air in the delivery cabin 2 from entering the operation cabin 1 to affect the sterilization effect.

[0048] The placement table 18 comprises a sterilization plate 181, a side guide shell 182 formed at one side of the sterilization plate 181, and through flow holes 183 formed in the side surface of the side guide shell 182 and arranged in the air flow direction of the delivery mechanism 16, so that when the top pressing plate 163 of the delivery mechanism 16 is pressed on the partition layer during sterilization, if the sterilization articles are placed on the placement table 164, the air passing through the sterilization articles can directly enter the air guide cover 17 through the through flow holes 183, to avoid the air passing through the sterilization articles on the placement table 164 from being blown to the sterilization plate 181.

[0049] A method for improving the concentration of VHP sterilization vaporized hydrogen peroxide of an isolator, comprising the following steps:

[0050] S1, placing sterilization articles in the operation cabin 1, and then connecting the sterile dry compressed air to the air drying mechanism 4 to run the isolator;

[0051] S2, after the vaporized hydrogen peroxide is injected into the operating cabin 1, the temperature and humidity sensor 11, the concentration sensor 12 and the pressure difference transmitter 13 start to monitor the temperature and humidity level, the concentration of the vaporized hydrogen peroxide and the pressure difference between the isolator cabin and the surrounding environment respectively;

[0052] S3, when the concentration of the vaporized hydrogen peroxide decreases due to the excessive humidity in the operating cabin 1, the air drying mechanism 4 injects a certain amount of sterile dry compressed air into the air feeding mechanism 3, and the circulating return air is mixed with the sterile dry compressed air in the air feeding mechanism 3 to reduce the humidity in the operating cabin 1.

[0053] S4, with the injection of the sterile dry compressed air, the pressure in the isolator cabin will rise, and the pressure in the isolator cabin is maintained within a certain range by the intermittent opening and closing of the pressure relief valve 7.

[0054] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for increasing vaporized hydrogen peroxide concentration for isolator VHP sterilization, characterized by, The utility model relates to a sterilization mechanism, air inlet mechanism and air return mechanism are included: Sterilization mechanism includes integral installation operating cabin (1) and delivery cabin (2), operating cabin (1) and delivery cabin (2) are provided with switch type installation first airtight door (9) and second airtight door (14) respectively, the inside of operating cabin (1) is located first airtight door (9) above and is installed humidity transducer (11), concentration sensor (12) and differential pressure transmitter (13) respectively, the display of humidity transducer (11), concentration sensor (12) and differential pressure transmitter (13) all penetrate operating cabin (1) front wall and are sealed type installation, the inside of operating cabin (1) is provided with evaporation mechanism (10) near side, the partition between operating cabin (1) and delivery cabin (2) is provided with two through grooves, and two the through grooves are provided with delivery mechanism (16) and air guide cover (17) respectively, the inside of operating cabin (1) is located air guide cover (17) directly above and is erected with goods table (18) in the through groove, the bottom of delivery cabin (2) is installed with support (15); Air inlet mechanism includes air feeding mechanism (3) installed on the top of operating cabin (1), the top of air feeding mechanism (3) is communicated with air return mechanism, and air drying mechanism (4) is installed on the side of air feeding mechanism (3), one end of air drying mechanism (4) away from air feeding mechanism (3) is connected with sterile dry compressed air; Air return mechanism includes air return cover (5) installed on the side of operating cabin (1), the end of air return cover (5) near the bottom is installed on the end of air guide cover (17) penetrating delivery cabin (2), and the bottom of air return cover (5) is communicated with the inside of delivery cabin (2) through air guide pipe (19), air return cover (5) is sequentially provided with waste filtering mechanism (6) and air return pipe (8) along the direction of steam flow, and the top of waste filtering mechanism (6) is provided with pressure relief valve (7). Air drying mechanism (4) includes throttle valve (41), the air outlet end of throttle valve (41) is installed on the air inlet of the side of air feeding mechanism (3), the air inlet end of throttle valve (41) is sequentially installed on related stop valve (42), flowmeter (43) and pressure regulating valve (44) through pipeline in reverse direction of gas flow, the air inlet end of pressure regulating valve (44) is installed with three-way pipe (45) through pipeline, the other two interfaces of three-way pipe (45) are respectively installed with pressure transmitter (46) and total switch hand valve (47) through pipeline, the air inlet of total switch hand valve (47) is connected with sterile dry compressed air.

2. A device for increasing vaporized hydrogen peroxide concentration for VHP sterilization of an isolator according to claim 1, characterized in that, Waste filtering mechanism (6) includes waste filtering cover (61), the bottom of inner wall of waste filtering cover (61) is installed with second high efficiency filter (63), the side of inner wall of waste filtering cover (61) is installed with second axial flow fan (62), the position of second axial flow fan (62) corresponds with the position of air return pipe (8).

3. The device for increasing vaporized hydrogen peroxide concentration for VHP sterilization of an isolator according to claim 1, wherein, ​ 4. The device for increasing vaporized hydrogen peroxide concentration for VHP sterilization of an isolator according to claim 1, characterized in that, The air feeding mechanism (3) comprises an air guide shell (31), the air drying mechanism (4) is installed on the side of the air guide shell (31), the air return pipe (8) is installed on the top of the air guide shell (31), a static pressure box (32) is arranged at the center of the inside of the air guide shell (31), the air guide shell (31) and the static pressure box (32) are both sealingly installed on the top of the operation cabin (1), a first axial flow fan (33) is installed between the top of the static pressure box (32) and the air guide shell (31), and the position of the first axial flow fan (33) corresponds to the position of the air outlet of the air return pipe (8).

5. A device for increasing the vapor pressure of hydrogen peroxide concentration for VHP sterilization of an isolator as claimed in claim 4, wherein, Air inlet channels are formed on the front and back sides of the static pressure box (32), and a first high-efficiency filter (34) is installed in the air inlet channel of the static pressure box (32); the bottom of the static pressure box (32) is extended downward to the inside of the operation cabin (1) at the four corners and is provided with an air guide plate (36).

6. A device for increasing vaporized hydrogen peroxide concentration for VHP sterilization of an isolator as claimed in claim 4, wherein, A steam pipe (35) is installed on the side of the static pressure box (32) in a penetrating manner, one end of the steam pipe (35) away from the static pressure box (32) penetrates the air guide shell (31) and is installed on the evaporation mechanism (10) arranged in the operation cabin (1).

7. The device for increasing vaporized hydrogen peroxide concentration for VHP sterilization of an isolator according to claim 1, wherein, The delivery mechanism (16) comprises a delivery table (161), the delivery table (161) is located in the inside of the delivery cabin (2), a slide rod (162) is installed at the four corners of the delivery table (161), a top pressing plate (163) is installed on the top of the slide rod (162), a placing table (164) is arranged on the top pressing plate (163), an inner threaded sleeve (165) is integrally arranged on one side of the delivery table (161), a lead screw (166) is threadedly sleeved in the inner threaded sleeve (165), the top of the lead screw (166) is rotatably arranged in the delivery cabin (2) through a bearing, and the bottom of the lead screw (166) penetrates the delivery cabin (2) and is connected with the output shaft of a motor (167) installed on the bottom of the delivery cabin (2).

8. A device for increasing the vapor pressure of hydrogen peroxide concentration for VHP sterilization of an isolator as claimed in claim 7, wherein, The slide rod (162) is slidingly arranged on the partition layer between the operation cabin (1) and the delivery cabin (2), and rubber rings are arranged on the outer edges of the upper surface of the delivery table (161) and the lower surface of the top pressing plate (163).

9. The device for increasing vaporized hydrogen peroxide concentration for VHP sterilization of an isolator according to claim 1, wherein, The placing table (18) comprises a sterilization plate (181), a side guide shell (182) is formed on one side of the sterilization plate (181), a through hole (183) is formed on the side surface of the side guide shell (182), and the ventilation direction of the through hole (183) is aligned with the delivery mechanism (16).

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