VHP sterility test isolator

Abstract

The utility model discloses a VHP sterility test isolator which comprises an installation frame, a plurality of steering wheels arranged at the bottom end of the installation frame, an air circulation box arranged on one side in the installation frame, a power distribution cabinet arranged on the other side in the installation frame, and a transmission mechanism arranged on one side of the top end of the installation frame. An isolation mechanism matched with the transmission mechanism is arranged on the other side of the top end of the mounting frame, a hydrogen peroxide generating device is arranged at the top end of the isolation mechanism, and one side of the hydrogen peroxide generating device is connected with one side of the air circulation box through a U-shaped communicating pipe. The device is scientific and novel in structure, vaporized hydrogen peroxide can quickly cover all the surfaces of the working area by adopting a mode of directly spraying vaporized hydrogen peroxide to the working area, and the vaporized hydrogen peroxide can be more uniformly distributed in the working area by matching with the design of the gas spraying assembly, the gas output assembly and the gas spraying assembly; the disinfection effect is better.

Description

Technical Field

[0001] The utility model relates to the field of biomedical engineering technology equipment, in particular to a VHP sterile inspection isolator. Background Art

[0002] With the development of biomedical engineering technology, the requirements for sterile operating environment are getting higher and higher. Traditional sterile isolators mainly use high-temperature and high-pressure steam sterilization, which consumes a lot of steam and has high operating costs. At the same time, high temperature and high pressure can easily damage optical equipment, electronic equipment and heat-sensitive materials. In addition, steam condensation will leave moisture on the equipment and surface, which is not good for precision equipment. Due to the many problems and limitations of traditional high-pressure steam sterilization, it is difficult to meet the needs of biomedical engineering, and hydrogen peroxide steam sterilization technology came into being.

[0003] Vapor hydrogen peroxide (VHP) sterilization technology is a low-temperature gas sterilization technology that can inactivate various microorganisms and decompose them into water and oxygen in a short time without causing damage to the environment or processed items. It can inactivate microorganisms in the air and on exposed surfaces. The VHP sterility inspection isolator combines vapor hydrogen peroxide sterilization technology with isolation chamber technology to form a closed working chamber where workers can perform sterile operations to avoid contamination of samples or instruments. This equipment meets the requirements of biological laboratories and pharmaceutical workshops for a sterile environment and promotes the development of biomedical engineering technology.

[0004] For example, Chinese patent CN212763577U discloses a VHP sterility inspection isolator, comprising a main body, a display operating mechanism rotatably connected to one side of the main body, a groove provided on the outer wall of the main body, the groove being adapted to the display operating mechanism, and the display operating mechanism including an L-shaped bracket, which can prevent the device from moving and level the device, thereby reducing interference with the inspection by external factors. However, in the specific application process, the above-mentioned VHP sterility inspection isolator has the following shortcomings: First, the device mainly relies on a gas circulation system to achieve gas diffusion within the chamber, without additional spraying or auxiliary devices to assist diffusion, resulting in the VHP gas being unable to quickly diffuse to all areas within the chamber in a short period of time. Multiple cycles are required to achieve uniform distribution of the gas within the chamber, resulting in a long cycle and low disinfection efficiency. At the same time, due to the slow gas diffusion rate, the gas is difficult to quickly penetrate some stacked or sealed objects, resulting in the risk of the interior or back area of the objects being missed due to disinfection, resulting in incomplete disinfection and low practicality of the device.

[0005] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0006] In response to the problems in the related technology, the present invention proposes a VHP sterility inspection isolator to overcome the above technical problems existing in the existing related technology.

[0007] To this end, the specific technical solutions adopted in this utility model are as follows:

[0008] A VHP sterile inspection isolator comprises a mounting frame, a plurality of steering wheels being provided at the bottom end of the mounting frame, an air circulation box being provided on one side of the interior of the mounting frame, a power distribution cabinet being provided on the other side of the interior of the mounting frame, a transmission mechanism cooperating with the air circulation box being provided on one side of the top end of the mounting frame, an isolation mechanism cooperating with the transmission mechanism being provided on the other side of the top end of the mounting frame, a hydrogen peroxide generator being provided on the top end of the isolation mechanism, and one side of the hydrogen peroxide generator being connected to one side of the air circulation box via a U-shaped connecting pipe.

[0009] Furthermore, in order to achieve isolated transfer of samples from the non-sterile area to the sterile area and prevent contamination, the transfer mechanism includes a transfer box arranged on one side of the top of the mounting frame, the bottom end of one side of the transfer box is provided with an air outlet grille connected to the air circulation box, the bottom and top of the other side of the transfer box are provided with inspection windows, one end of the transfer box is provided with an electric airtight transfer port connected to the isolation mechanism, the other end of the transfer box is provided with a feed door, the top of the transfer box is provided with a jet assembly connected to the hydrogen peroxide generator, the jet assembly includes a jet base arranged at the top of the transfer box, the bottom end of the jet base is provided with a jet valve, jet tubes are provided on both sides of the bottom end of the jet valve, the bottom end of the jet tube is provided with an expansion tube, and the bottom end of the jet valve is provided with a sensor probe 1.

[0010] Furthermore, in order to provide a closed sterile environment for operators to perform various sterile operations and experimental research, the isolation mechanism includes an isolation box arranged on the other side of the top of the mounting frame, an exhaust grille connected to the air circulation box is provided at the bottom end of one side of the isolation box, isolation windows are provided at the bottom and top of the other side of the isolation box, and circular operation ports are provided on both sides of the isolation window at the bottom, a gas output component connected to the hydrogen peroxide generator is provided at the top of one end of the isolation box, and a gas outlet connected to the hydrogen peroxide generator is provided at the top of the other end of the isolation box. The gas output assembly includes a gas pipe arranged at the top of one end of the isolation box, a diverter pipe is arranged at the bottom of one end of the gas pipe, a sensor probe 2 is arranged at the bottom of the diverter pipe, exhaust pipes are arranged on both sides of the diverter pipe, a plurality of exhaust holes are opened on the outside of the exhaust pipe, a nozzle is arranged at one end of the exhaust pipe, the gas injection assembly includes a solenoid valve arranged at the top of the other end of the isolation box, a gas delivery hose is arranged at one end of the solenoid valve, a gas delivery hose is arranged at one end of the gas delivery hose, and a hook matching the gas injection gun is arranged at the middle of one side of the isolation box.

[0011] The beneficial effects of the utility model are:

[0012] 1. The structure of the utility model is scientific and novel. By directly spraying vaporized hydrogen peroxide on the working area, the vaporized hydrogen peroxide can more fully cover all surfaces of the working area, thereby achieving a more thorough disinfection effect. At the same time, since it no longer relies on gas circulation, the time of the entire disinfection process is greatly shortened and the work efficiency is significantly improved. In addition, by providing an electric airtight transfer port and a circular operating port, the operator's work is also more convenient and flexible. With the design of the jet assembly, gas output assembly and gas jet assembly, the vaporized hydrogen peroxide can be fully atomized, so that it is more evenly distributed in the working area and the disinfection effect is better. In summary, the isolator has more thorough disinfection, shorter cycle time, more flexible operation, and overall improved working performance of the VHP sterile inspection isolator.

[0013] 2. By setting up a transfer mechanism, the isolated transfer of samples from the non-sterile area to the sterile area is achieved to prevent contamination; among them, the electric airtight transfer port makes the sample transfer operation more convenient and controllable, and the jet component makes the sprayed hydrogen peroxide gas reach the optimal atomization state, which improves the effect of surface disinfection inside the transfer box and shortens the disinfection cycle. Through the coordination of various components, disinfection, gas replacement and sealing operations can be carried out in the transfer box, ensuring the sterility of the transfer.

[0014] 3. By setting up an isolation mechanism, a closed sterile environment is provided for operators to perform various sterile operations and experimental research. At the same time, hydrogen peroxide gas is transported inside the isolation box through the gas output component to fully disinfect the interior of the isolation box, ensuring the cleanliness and sterility of the interior of the isolation box. The isolation window allows the operator to observe the situation inside the box, and the circular operating port allows operation without destroying the airtightness of the isolation box. The gas injection component can perform targeted injection on specific areas in the isolation box and the back of the sample to improve the disinfection effect. Through the cooperation of various components, the functions of closed isolation and full disinfection are achieved, preventing samples and instruments from being contaminated, and improving work efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a structural diagram of a VHP sterility inspection isolator according to an embodiment of the present utility model;

[0017] Figure 2This is a schematic structural diagram from another angle of a VHP sterility inspection isolator according to an embodiment of the present utility model;

[0018] Figure 3 This is a partial structural diagram of a VHP sterility inspection isolator according to an embodiment of the present utility model;

[0019] Figure 4 yes Figure 1 A partial enlarged view of point A in the middle;

[0020] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle;

[0021] Figure 6 yes Figure 3 A partial enlarged view of point C in the middle;

[0022] Figure 7 The figure is a partial structural diagram of a gas output assembly in a VHP sterility inspection isolator according to an embodiment of the present utility model.

[0023] In the picture:

[0024] 1. Mounting frame; 2. Steering wheel; 3. Air circulation box; 4. Power distribution cabinet; 5. Transfer mechanism; 501. Transfer box; 502. Air outlet grille; 503. Inspection window; 504. Electric airtight transfer port; 505. Feed door; 506. Jet assembly; 5061. Jet base; 5062. Jet valve; 5063. Jet pipe; 5064. Expansion pipe; 5065. Sensor probe 1; 6. Isolation mechanism; 601. Isolation box; 602. Exhaust Grille; 603, isolation window; 604, circular operating port; 605, gas output assembly; 6051, gas delivery pipe; 6052, diverter pipe; 6053, sensor probe 2; 6054, exhaust pipe; 6055, exhaust hole; 6056, nozzle; 606, gas injection assembly; 6061, solenoid valve; 6062, gas delivery hose; 6063, gas injection gun; 6064, hook; 7, hydrogen peroxide generator; 8, U-shaped connecting pipe. DETAILED DESCRIPTION

[0025] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] According to an embodiment of the present utility model, a VHP sterility inspection isolator is provided.

[0027] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1-Figure 7 As shown, the VHP sterile inspection isolator according to an embodiment of the present invention includes a mounting frame 1, a plurality of steering wheels 2 are provided at the bottom end of the mounting frame 1, an air circulation box 3 is provided on one side of the interior of the mounting frame 1, a power distribution cabinet 4 is provided on the other side of the interior of the mounting frame 1, a transmission mechanism 5 that cooperates with the air circulation box 3 is provided on one side of the top of the mounting frame 1, an isolation mechanism 6 that cooperates with the transmission mechanism 5 is provided on the other side of the top of the mounting frame 1, and a hydrogen peroxide generator 7 is provided on the top of the isolation mechanism 6 (in addition, in specific applications, a control panel is provided on one side of the hydrogen peroxide generator 7, and the air circulation box 3, the power distribution cabinet 4, the electric airtight transmission port 504, the solenoid valve 6061 and the hydrogen peroxide generator 7 are electrically connected in sequence through the control panel. This is a prior art and will not be elaborated on here), and one side of the hydrogen peroxide generator 7 is connected to one side of the air circulation box 3 through a U-shaped connecting pipe 8.

[0028] In addition, it should be noted that the air circulation box 3 includes a box body, a fan, a filtering system and a control system, wherein: the box body provides a closed internal space to receive the gas transmitted from the air outlet grille 502 and the exhaust grille 602; the fan provides gas circulation inside the transfer box 501 and the isolation box 601, accelerating the flow of gas in the device; the filtering system is used to filter the circulating gas, remove particulate contamination, and ensure the cleanliness of the gas in the device; the control system is used to control the fan and the filtering system to maintain the environmental parameters in the box.

[0029] The hydrogen peroxide generator 7 includes a hydrogen peroxide storage tank, a liquid supply pump, an evaporator, a temperature and humidity sensor, a gas concentration sensor, and a gas output module. The hydrogen peroxide storage tank is used to safely store hydrogen peroxide stock; the liquid supply pump is used to pump the hydrogen peroxide stock from the storage tank to the evaporator; the evaporator is used to vaporize the hydrogen peroxide liquid into gas using electrical heating; the temperature and humidity sensor is used to obtain data from sensor probe 1 5065 and sensor probe 2 6053 and to promptly adjust the evaporator and gas output module; the gas concentration sensor is used to detect the concentration of generated hydrogen peroxide gas; and the gas output module is used to output the generated hydrogen peroxide gas to the injection assembly 506, the gas output assembly 605, and the gas injection assembly 606. The air circulation box 3 and the hydrogen peroxide generator 7 are prior art and will not be described in detail here.

[0030] With the help of the above-mentioned technical solution of the present invention, the structure of the present invention is scientific and novel. By directly spraying vaporized hydrogen peroxide on the working area, the vaporized hydrogen peroxide can more fully cover all surfaces of the working area, thereby achieving a more thorough disinfection effect. At the same time, since it no longer relies on gas circulation, the time of the entire disinfection process is greatly shortened and the work efficiency is significantly improved. In addition, through the design of the jet assembly 506, the gas output assembly 605 and the gas injection assembly 606, the vaporized hydrogen peroxide can be fully atomized, so that it is more evenly distributed in the working area, the disinfection effect is better, and the cycle time is shortened, thereby improving the working performance of the VHP sterility inspection isolator.

[0031] In one embodiment, for the above-mentioned transfer mechanism 5, the transfer mechanism 5 includes a transfer box 501 arranged on one side of the top of the mounting frame 1 (in addition, in specific applications, the side wall of the transfer box 501 is provided with an air duct connected to the gas output module of the hydrogen peroxide generator 7), the bottom end of one side of the transfer box 501 is provided with an air outlet grille 502 connected to the air circulation box 3, the bottom and top of the other side of the transfer box 501 are provided with inspection windows 503, one end of the transfer box 501 is provided with an electric airtight transfer port 504 connected to the isolation mechanism 6, and the other end of the transfer box 501 is provided with a feed door 505 (in addition, in specific applications, A rubber sealing strip that matches the transfer box 501 is provided on the inner side of the feed door 505), and a jet assembly 506 connected to the hydrogen peroxide generator 7 is provided at the top of the transfer box 501. The jet assembly 506 includes a jet base 5061 provided at the top of the transfer box 501, and a jet valve 5062 is provided at the bottom end of the jet base 5061. Jet pipes 5063 are provided on both sides of the bottom end of the jet valve 5062, and an expansion pipe 5064 is provided at the bottom end of the jet pipe 5063. A sensor probe 5065 is provided at the bottom end of the jet valve 5062, thereby improving the disinfection effect of the inner surface of the transfer box 501 and ensuring the sterility of the sample transfer.

[0032] In addition, it should be noted that the electric airtight transfer port 504 includes an electric actuator, a transfer door, an airtight sealing device and a control system, wherein the electric actuator is an electric cylinder driven by electricity; the transfer door can be controlled to open and close by the electric actuator to achieve an airtight connection between the transfer box 501 and the isolation box 601; the airtight sealing device is an airtight gasket to ensure the airtightness of the transfer door when it is closed; the control system enables the operator to control the opening and closing of the transfer door through the control panel. This is an existing technology and will not be elaborated here.

[0033] The working principle of the transfer mechanism 5 is as follows: first, open the feed door 505, put the sample into the transfer box 501, close the feed door 505, and then start the hydrogen peroxide generator 7 to disinfect the transfer box 501; the jet assembly 506 is fixedly installed on the top of the transfer box 501 through the jet base 5061 and is connected to the hydrogen peroxide generator 7. The jet valve 5062 controls the flow and injection of vaporized hydrogen peroxide, and the jet pipe 5063 guides the gas to the nozzle. Since the diameter of the expansion tube 5064 is larger than that of the jet pipe 5063, When the vaporized hydrogen peroxide enters the expansion tube 5064 from the jet tube 5063, it expands due to the sudden increase in the cross-section of the tube, and the pressure decreases. The low pressure is conducive to the full vaporization and atomization of the gas, so that the vaporized hydrogen peroxide can be more fully atomized. The injection effect is monitored by the sensor probe 5065 to achieve feedback control. Then, when the transfer box 501 is disinfected, the electric airtight transfer port 504 is opened to place the sample from the transfer box 501 into the isolation mechanism 6, and the electric airtight transfer port 504 is closed to carry out subsequent operations.

[0034] In one embodiment, for the above-mentioned isolation mechanism 6, the isolation mechanism 6 includes an isolation box 601 arranged on the other side of the top of the mounting frame 1 (in addition, in specific applications, the side wall of the isolation box 601 is provided with an air duct connected to the gas output module of the hydrogen peroxide generator 7), the bottom end of one side of the isolation box 601 is provided with an exhaust grille 602 connected to the air circulation box 3, the bottom and top of the other side of the isolation box 601 are provided with isolation windows 603, and circular operation ports 604 are provided on both sides of the isolation window 603 at the bottom (in addition, in specific applications, neoprene gloves are provided in the circular operation port 604, and the operator can perform sterile operations through the gloves without destroying the air tightness of the isolation box 601), the top of one end of the isolation box 601 is provided with a gas output component 605 connected to the hydrogen peroxide generator 7, and the top of the other end of the isolation box 601 is provided with a gas output component 605 connected to the hydrogen peroxide generator 7. The connected gas injection assembly 606, the gas output assembly 605 includes a gas supply pipe 6051 arranged at the top of one end of the isolation box 601, a diverter pipe 6052 is arranged at the bottom of one end of the gas supply pipe 6051, a sensor probe 2 6053 is arranged at the bottom of the diverter pipe 6052, and an exhaust pipe 6054 is arranged on both sides of the diverter pipe 6052. A plurality of exhaust holes 6055 are opened on the outside of the exhaust pipe 6054, and a nozzle 6056 is arranged at one end of the exhaust pipe 6054. The gas injection assembly 606 includes a solenoid valve 6061 arranged at the top of the other end of the isolation box 601, a gas delivery hose 6062 is arranged at one end of the gas delivery hose 6062, and a gas spray gun 6063 is arranged at one end of the gas delivery hose 6062, and a hook 6064 cooperating with the gas spray gun 6063 is arranged in the middle of one side of the isolation box 601, thereby realizing the functions of closed isolation and sufficient disinfection to prevent samples and instruments from being contaminated.

[0035] The working principle of the isolation mechanism 6 is as follows: first, the operator can check the inside of the isolation box 601 through the isolation window 603, and then operate the samples and instruments inside the isolation box 601 through the gloves in the circular operating port 604; when the inside of the isolation box 601 needs to be sterilized, by starting the hydrogen peroxide generator 7, the gas output component 605 passes the vaporized hydrogen peroxide into the diversion pipe 6052 through the gas pipe 6051, and outputs it to the isolation box 601 through the exhaust hole 6055 on the outside of the exhaust pipe 6054 for disinfection; at the same time, by starting the solenoid valve 6061, the gas injection component 606 passes the vaporized hydrogen peroxide into the gas delivery hose 6062, and sprays it out through the gas injection gun 6063, so that specific areas in the isolation box 601 and the back of the sample can be sprayed in a targeted manner, thereby improving the disinfection effect.

[0036] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0037] In actual application, first, power is supplied to the air circulation box 3 and the hydrogen peroxide generator 7 through the power distribution cabinet 4, the sample is placed in the transfer mechanism 5, and then the hydrogen peroxide generator 7 is started through the control panel. The generated vaporized hydrogen peroxide enters the transfer mechanism 5 for aseptic disinfection (the working principle of the transfer mechanism 5 is as described above), and then the disinfected sample is sent to the isolation mechanism 6, where the vaporized hydrogen peroxide further disinfects the sample and the equipment in the isolation mechanism 6 (the working principle of the isolation mechanism 6 is as described above). Thus, a closed sterile environment is obtained through more efficient and thorough disinfection, realizing the functions of closed isolation and sufficient disinfection of the device, preventing the sample and instrument from being contaminated, and improving work efficiency and product quality.

[0038] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A VHP sterility inspection isolator, comprising a mounting frame (1), characterized in that: The bottom end of the mounting frame (1) is provided with a plurality of steering wheels (2), an air circulation box (3) is provided on one side of the interior of the mounting frame (1), a power distribution cabinet (4) is provided on the other side of the interior of the mounting frame (1), a transmission mechanism (5) cooperating with the air circulation box (3) is provided on one side of the top end of the mounting frame (1), an isolation mechanism (6) cooperating with the transmission mechanism (5) is provided on the other side of the top end of the mounting frame (1), a hydrogen peroxide generator (7) is provided on the top end of the isolation mechanism (6), and one side of the hydrogen peroxide generator (7) is connected to one side of the air circulation box (3) through a U-shaped connecting pipe (8); The transfer mechanism (5) comprises a transfer box (501) arranged on one side of the top end of the mounting frame (1); an air outlet grille (502) connected to the air circulation box (3) is provided at the bottom end of one side of the transfer box (501); and inspection windows (503) are provided at the bottom and top of the other side of the transfer box (501); an electric airtight transfer port (504) connected to the isolation mechanism (6) is provided at one end of the transfer box (501); a feed door (505) is provided at the other end of the transfer box (501); and an injection assembly (506) connected to the hydrogen peroxide generator (7) is provided at the top end of the transfer box (501).

2. A VHP sterility inspection isolator according to claim 1, characterized in that: The jet assembly (506) includes a jet base (5061) arranged at the top of the transfer box (501), a jet valve (5062) is arranged at the bottom of the jet base (5061), jet pipes (5063) are arranged on both sides of the bottom of the jet valve (5062), an expansion pipe (5064) is arranged at the bottom of the jet pipe (5063), and a sensor probe (5065) is arranged at the bottom of the jet valve (5062).

3. A VHP sterility inspection isolator according to claim 1, characterized in that: The isolation mechanism (6) comprises an isolation box (601) arranged on the other side of the top of the mounting frame (1); an exhaust grille (602) connected to the air circulation box (3) is provided at the bottom end of one side of the isolation box (601); isolation windows (603) are provided at the bottom and top of the other side of the isolation box (601); and circular operating ports (604) are provided on both sides of the isolation window (603) at the bottom; a gas output assembly (605) connected to the hydrogen peroxide generator (7) is provided at the top of one end of the isolation box (601); and a gas injection assembly (606) connected to the hydrogen peroxide generator (7) is provided at the top of the other end of the isolation box (601).

4. A VHP sterility inspection isolator according to claim 3, characterized in that: The gas output assembly (605) includes a gas pipe (6051) arranged at the top of one end of the isolation box (601), a diverter pipe (6052) is provided at the bottom of one end of the gas pipe (6051), a sensor probe 2 (6053) is provided at the bottom of the diverter pipe (6052), exhaust pipes (6054) are provided on both sides of the diverter pipe (6052), a plurality of exhaust holes (6055) are provided on the outside of the exhaust pipe (6054), and a nozzle (6056) is provided at one end of the exhaust pipe (6054).

5. A VHP sterility inspection isolator according to claim 3, characterized in that: The gas injection assembly (606) includes a solenoid valve (6061) arranged at the top of the other end of the isolation box (601), a gas delivery hose (6062) is provided at one end of the solenoid valve (6061), a gas injection gun (6063) is provided at one end of the gas delivery hose (6062), and a hook (6064) that cooperates with the gas injection gun (6063) is provided in the middle of one side of the isolation box (601).

Images