A fogging safety protection device

Abstract

This invention discloses a misting safety protection device, belonging to the field of cleanroom technology, comprising: a housing with a personnel entrance and a personnel exit; a first sealing door installed at the personnel entrance and a second sealing door installed at the personnel exit; a liquid storage tank and a pump both installed on the housing, with the pump's inlet connected to the inside of the liquid storage tank; multiple atomizing nozzles all installed on the housing, with the spray ends of the atomizing nozzles located inside the housing, and all atomizing nozzles connected to the pump's outlet; a drain outlet at the bottom of the housing connected to external wastewater treatment equipment; filter element one and filter element two both installed on the housing, with an air inlet and an air outlet on the housing; the inlet of filter element one connected to the atmosphere outside the housing, and the outlet of filter element one connected to the air inlet; the inlet of filter element two connected to the air outlet, and the outlet of filter element two connected to the air inlet of a fan; the air outlet of the fan connected to the atmosphere outside the housing. This application can reliably clean and purify personnel entering its interior.

Description

Technical Field

[0001] This invention relates to the field of cleanroom technology, and in particular to a misting safety protection device. Background Technology

[0002] In industrial production, laboratories, cleanrooms, medical protective equipment, new energy lithium batteries, highly toxic / highly active / highly allergenic pharmaceutical industries, and the nuclear industry, before personnel or objects exit high-risk or highly polluted rooms (such as highly toxic and highly active workshops, P3 / P4 laboratories, lithium battery cathode material workshops, powder material workshops, and other high-toxic / highly active / highly allergenic pharmaceutical and nuclear industries), it is essential to effectively remove dust particles, harmful particles, highly active dust, aerosols, and microorganisms adhering to their surfaces. This prevents the spread of pollution, preventing external pollutants from entering the clean area and avoiding the leakage of harmful dust from within. It also prevents dust from drifting and polluting the environment and being inhaled by humans, mitigating the risk of occupational poisoning and achieving dual protection. Fog shower safety protection devices, as a commonly used cleaning and purification equipment, are widely applied in these scenarios.

[0003] Currently, most existing fog shower safety protection devices only have basic spray cleaning functions. They spray liquid onto people or objects entering the room through nozzles to remove particles attached to the surface. However, these fog shower safety protection devices generally suffer from poor cleaning effect, insufficient environmental protection, and unreasonable structural design. In terms of cleaning effect, the nozzle arrangement of existing fog shower safety protection devices is often relatively simple, failing to achieve multi-directional and all-round spray coverage. This results in incomplete removal of particles from the surface of people or objects, leaving a risk of impurities remaining. At the same time, some fog shower safety protection devices lack effective ventilation structures, preventing the dust-laden water mist formed indoors after spraying from being discharged and purified in a timely manner. This not only affects the subsequent cleaning effect but may also lead to abnormal indoor humidity, impacting personnel comfort and the service life of the equipment.

[0004] In terms of environmental protection, existing fogging safety devices mostly discharge fogging wastewater directly without proper collection and treatment, easily causing pollution to the surrounding environment. Simultaneously, the dust-laden exhaust gas generated during the fogging process is directly discharged outdoors, and the particulate matter in the exhaust gas pollutes the atmosphere, failing to meet current environmental emission standards. Furthermore, existing fogging safety devices have poor sealing performance; during cleaning, dust-laden water mist and exhaust gas inside can easily leak from the gaps between the door and frame, reducing the cleaning and purification effect and causing secondary pollution to the outdoor environment.

[0005] In terms of structural design and functionality, the existing misting safety protection device's liquid storage mechanism lacks effective inlet filtration, liquid level monitoring, and temperature regulation functions, which can easily lead to nozzle clogging, unstable liquid supply, and an inability to adjust the temperature of the spray liquid according to usage needs, affecting the cleaning experience and effectiveness. The door structure design is unreasonable, lacking reliable locking and observation mechanisms, making it impossible to ensure that personnel do not leave before the misting cleaning is completed, and also making it inconvenient for external personnel to observe the indoor cleaning status. At the same time, the existing misting safety protection device's ventilation and filtration structure is relatively simple, using only a single filter element for filtration, which cannot fully purify the exhaust gas and is difficult to meet the high environmental protection and high cleanliness requirements.

[0006] Therefore, how to provide a fogging safety protection device that can overcome the above-mentioned problems is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] To achieve the above objectives, the present invention provides a fogging safety protection device, comprising: The box is arranged vertically and has a personnel entrance and a personnel exit on each of its two side walls. The personnel entrance is equipped with a sealing door 1 that can be blocked, and the personnel exit is equipped with a sealing door 2 that can be blocked. A misting assembly includes a liquid storage tank, a pump, and atomizing nozzles. The liquid storage tank and the pump are both mounted on a housing. The liquid storage tank contains liquid, and the inlet of the pump is connected to the interior of the liquid storage tank. Multiple atomizing nozzles are provided and mounted on the housing, with their spray ends located inside the housing. All atomizing nozzles are connected to the outlet of the pump. A drain port is located at the bottom of the housing and is connected to external wastewater treatment equipment. A ventilation assembly includes a first filter element, a second filter element, and a fan. Both the first and second filter elements are mounted on the housing. The housing has an air inlet and an air outlet communicating with its interior. The inlet of the first filter element is connected to the atmosphere outside the housing, and the outlet of the first filter element is connected to the air inlet. The inlet of the second filter element is connected to the air outlet, and the outlet of the second filter element is connected to the air inlet of the fan. The air outlet of the fan is connected to the atmosphere outside the housing.

[0008] Preferably, the box is a rectangular body, and the personnel entrance and the personnel exit are provided on two opposite side walls of the box. The atomizing nozzles are installed on the other two opposite side walls of the box and the top of the box. Each of the sealing door one and the sealing door two is provided with a transparent observation window one and a transparent observation window two.

[0009] Preferably, the misting assembly further includes an inlet pipe, an inlet solenoid valve, an inlet filter, an outlet filter, and an air breathing valve. One end of the inlet pipe is connected to an external liquid supply source, and the other end of the inlet pipe is fixed and connected to the storage tank. The inlet solenoid valve and the inlet filter are connected in series on the inlet pipe. The inlet filter is arranged between the inlet solenoid valve and the storage tank along the length of the inlet pipe. The inlet end of the pump is connected to the storage tank through a pipe, and the outlet filter is connected in series between them. The upper end of the storage tank is fixed and connected to the air breathing valve.

[0010] Preferably, the misting assembly further includes a liquid-permeable mesh plate and a liquid collection shell. The liquid-permeable mesh plate is horizontally arranged inside the housing and covers the drain port. The liquid collection shell is vertically arranged with an opening at its upper end. The opening end of the liquid collection shell is sealed and fixed to the bottom of the housing. The drain port is connected to the liquid collection shell. The bottom of the liquid collection shell is provided with a waste liquid outlet, which is connected to an external waste liquid treatment device.

[0011] Preferably, the misting assembly further includes a main drain pipe, a branch drain pipe, and a drain solenoid valve. One end of the main drain pipe is fixed and connected to the waste liquid outlet, and the other end of the main drain pipe is connected to an external waste liquid treatment device. The bottom of the storage tank is provided with a discharge port. One end of the branch drain pipe is fixed and connected to the discharge port, and the other end of the branch drain pipe is fixed and connected to the main drain pipe. The drain solenoid valve is connected in series with the branch drain pipe.

[0012] Preferably, the sealed door is hollow inside, and the outlet of the external air source is connected to the interior of the sealed door. The internal air pressure of the sealed door is greater than the atmospheric pressure outside the box.

[0013] Preferably, the ventilation assembly further includes a perforated mesh plate, a mounting shell, and a normally closed air valve. The perforated mesh plate is located inside the housing and covers the air inlet. The mounting shell is fixed to the housing and has an air inlet and an air outlet at both ends. The filter element is tightly embedded in the mounting shell, and its inlet and outlet are connected to the air inlet and the air outlet, respectively. The normally closed air valve is fixed to the mounting shell. Its air inlet is connected to the atmosphere outside the housing, its air outlet is connected to the air inlet, and its air outlet is connected to the air inlet.

[0014] Preferably, the ventilation assembly further includes a second perforated plate, a second mounting shell, a third filter element, a third mounting shell, a partition, a cover, a second normally closed air valve, and a fourth filter element. The air outlet is arranged on the side wall of the housing. The second perforated plate is located inside the housing and covers the air outlet. The second mounting shell is located outside the housing, with one end open and sealed to the housing. The second filter element is arranged inside the second mounting shell, with its outlet located inside the housing. The liquid collection shell has ventilation holes located above the drain outlet. The outlet of the third filter element is located inside the second mounting shell, and its inlet communicates with the ventilation holes. The fan is fixed inside the second mounting shell, with its inlet located inside the second mounting shell. The second mounting shell is installed inside; the third mounting shell is open at one end and its sealing buckle is attached to the outer side wall of the housing; the partition is fixed inside the third mounting shell, and the partition divides the interior of the third mounting shell into a mounting cavity and a ventilation cavity; the side wall of the housing is provided with a mounting opening that communicates with the interior of the mounting cavity, and the cover plate is detachably sealed at the mounting opening; the second normally closed air valve is fixed on the third mounting shell, the air inlet of the second normally closed air valve communicates with the interior of the mounting cavity, and the air outlet of the second normally closed air valve communicates with the atmosphere outside the housing; the fourth filter element is fixed on the partition, the fourth filter element is located inside the mounting cavity, the outlet of the fourth filter element is located inside the mounting cavity, the partition is provided with a ventilation hole, and the inlet of the fourth filter element communicates with the ventilation hole; the air outlet of the fan communicates with the ventilation cavity.

[0015] Preferably, the control components include a lighting lamp, an electric bolt lock, a door opening switch, a photoelectric switch, an electromagnetic lock, and a controller. The lighting lamp is installed on the top of the enclosure; the electric bolt lock is installed on the second sealed door; there are two door opening switches, each installed inside the enclosure and on the outer wall of the enclosure where the first sealed door is located; the photoelectric switch is arranged inside the enclosure, located between the first and second sealed doors, with its emitting and reflecting ends fixed to the two inner side walls of the enclosure; the electromagnetic lock is installed on the first sealed door; the controller is installed on the enclosure; and the lighting lamp, the electric bolt lock, the door opening switch, the emitting end of the photoelectric switch, and the electromagnetic lock are all electrically connected to the controller.

[0016] Preferably, the misting assembly further includes a heating wire, a temperature sensor, and a liquid level sensor, all mounted on the liquid storage tank. The heating end of the heating wire, the detection end of the temperature sensor, and the detection end of the liquid level sensor are all located inside the liquid storage tank, and the heating wire, the temperature sensor, and the liquid level sensor are all electrically connected to the controller.

[0017] The advantages and positive effects of the fogging safety protection device described in this invention are: 1. This application designs a misting component and a ventilation component. When personnel enter the chamber, the atomizing nozzles spray mist onto them, thereby removing particles adhering to their clothing or skin and clearing dust particles from their surfaces. Combined with the ventilation component, air filtered by filter element one enters the chamber, while the gas inside the chamber is filtered by filter element two before being discharged. This completes the gas replacement within the chamber, achieving reliable cleaning of personnel inside. The gas discharged from the chamber needs to be filtered by filter element two, ensuring that the misting safety protection device meets environmental standards and does not pollute the atmosphere during operation.

[0018] 2. A drain outlet is provided at the bottom of the tank, and the waste liquid generated inside the tank will be discharged in a timely manner.

[0019] 3. By designing transparent observation window one and transparent observation window two, the internal condition of the enclosure can be known in a timely manner.

[0020] 4. By designing an inlet solenoid valve, the liquid inlet can control the opening and closing of the liquid path in the inlet pipe; by designing an inlet filter and an outlet filter, the liquid entering the storage tank will first pass through the inlet filter, and the liquid exiting the storage tank will first pass through the outlet filter; by designing an air breathing valve, the air pressure inside and outside the storage tank is balanced, ensuring that the storage tank can normally receive and discharge liquid.

[0021] 5. By designing a permeable mesh plate and a collection shell, personnel inside the tank can stand on the permeable mesh plate, which provides support for them. At the same time, waste liquid inside the tank can pass through the permeable mesh plate and enter the collection shell, which can collect the waste liquid inside the tank.

[0022] 6. Waste liquid in the collection tank and residual liquid in the storage tank can be discharged to external waste liquid treatment equipment through the main drain pipe; the drain solenoid valve can control the liquid flow of the drain branch pipe.

[0023] 7. The sealed door is filled with air. This design ensures the airtightness between the sealed door and the personnel entrance, meaning that gas or impurities inside or outside the box will not pass through the gap between the sealed door and the personnel entrance.

[0024] 8. Through the design and installation of the housing and filter element, the air perforated plate can be reliably installed and arranged. It can prevent large particles of impurities outside the housing from entering the housing. When the fan stops, the normally closed air valve is in the closed state, so external air and impurities will not enter the housing, and the gas or impurities inside the housing will not be discharged from the housing.

[0025] 9. By designing the second perforated mesh plate, large particles, personnel body parts, and items inside the chamber will not enter the air outlet; by designing the second mounting shell, filter element two and filter element three can be reliably installed, and the exhaust gas in the liquid collection shell can also be drawn away by the fan; by designing the fourth filter element, the gas filtered by filter element two and filter element three can be fully filtered by filter element four, ensuring that the gas discharged outside the chamber meets environmental protection standards and will not pollute the atmosphere; by designing the cover plate and mounting port, this design facilitates the disassembly and assembly of filter element four; by designing the partition plate and mounting shell three, filter element four can be reliably arranged, and the fan and normally closed air valve two can be reliably installed and arranged.

[0026] 10. The lighting can provide illumination inside the chamber; by designing an electric lock and door switch, personnel inside the chamber cannot leave before the mist spraying is completed; by designing a photoelectric switch, the pump and fan can only work when personnel enter the chamber.

[0027] 11. The heating wire can heat the liquid in the storage tank, the temperature sensor can monitor the temperature of the liquid in the storage tank in real time, and the liquid level sensor can monitor the amount of liquid in the storage tank in real time. Attached Figure Description

[0028] Figure 1 For the overall isometric projection of the present invention Figure 1 ; Figure 2 For the overall isometric projection of the present invention Figure 2 ; Figure 3 This is an exploded isometric view of the present invention; Figure 4 This is a partial isometric view of the present invention; Figure 5 This is a partial isometric schematic diagram of the present invention; Figure 6 This is an isometric sectional view of the present invention.

[0029] Figure Labels 01. Housing; 02. Sealed door one; 020. Transparent observation window one; 03. Sealed door two; 030. Transparent observation window two; 04. Liquid storage tank; 05. Pump; 06. Atomizing nozzle; 07. Inlet pipe; 08. Inlet solenoid valve; 09. Inlet filter; 10. Outlet filter; 11. Air breather valve; 12. Perforated plate; 13. Liquid collection shell; 14. Main drain pipe; 15. Branch drain pipe; 16. Drain solenoid valve; 17. Heating wire; 18. Temperature sensor ; 19. Liquid level sensor; 20. Filter element one; 21. Filter element two; 22. Fan; 23. Ventilation mesh plate one; 24. Mounting housing one; 25. Normally closed air valve one; 26. Ventilation mesh plate two; 27. Mounting housing two; 28. Filter element three; 29. ​​Mounting housing three; 30. Partition plate; 31. Cover plate; 32. Normally closed air valve two; 33. Filter element four; 34. Lighting lamp; 35. Electric bolt lock; 36. Door opening switch; 37. Photoelectric switch; 38. Controller; 39. Electromagnetic lock. Detailed Implementation

[0030] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] In this application, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. In case of any inconsistency, the meaning set forth in this specification or derived from the content described herein shall prevail. Furthermore, the terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit the scope of this application.

[0032] See appendix Figure 1-6 This is a schematic diagram of the overall and partial structure of one embodiment of the present invention. Specifically, the present invention discloses a fogging safety protection device, comprising: Box 01 is a rectangular box, vertically arranged, with a personnel entrance and exit on each of its two opposite side walls. A sealing door 1 02 is installed at the personnel entrance, connected to box 01 via a hinge. A sealing door 2 03 is installed at the personnel exit, also connected to box 01 via a hinge. The outer surface of box 01 is covered by an outer shell, and the space between the outer side wall of box 01 and the inner side wall of the outer shell forms a device mounting space.

[0033] The misting assembly includes a storage tank 04, a pump 05, and atomizing nozzles 06. Both the storage tank 04 and the pump 05 are fixedly mounted on a housing 01, located within the device mounting space. The storage tank 04 contains purified water. The inlet of the pump 05 is connected to the interior of the storage tank 04. Multiple atomizing nozzles 06 are provided and mounted on the housing 01, with their spray ends located inside the housing 01. All atomizing nozzles 06 are connected to the outlet of the pump 05. The pump 05 draws the purified water from the storage tank 04, which is then sprayed out from the atomizing nozzles 06. A drain port is located at the bottom of the housing 01, connected to external wastewater treatment equipment. When personnel enter the housing 01, the atomizing nozzles 06 spray the atomized liquid, while the wastewater inside the housing 01 is discharged through the drain port.

[0034] The ventilation assembly includes filter element 20, filter element 21, and fan 22. Filter element 20 and filter element 21 are both mounted on housing 01, which has an air inlet and an air outlet communicating with its interior. The inlet of filter element 20 is connected to the atmosphere outside housing 01, and the outlet of filter element 20 is connected to the air inlet. External air entering housing 01 must be filtered by filter element 20. The inlet of filter element 21 is connected to the air outlet, and the outlet of filter element 21 is connected to the air inlet of fan 22. The air outlet of fan 22 is connected to the atmosphere outside housing 01. Gas exiting housing 01 must be filtered by filter element 21. When the atomizing nozzle 06 stops spraying, fan 22 starts, thereby achieving gas circulation within housing 01.

[0035] The two opposite side walls of the enclosure 01, which lack personnel entrances and exits, as well as the top of the enclosure 01, are equipped with atomizing nozzles 06. After personnel enter the enclosure 01, multi-directional spraying can be achieved inside, allowing personnel inside to fully contact the water mist sprayed from the atomizing nozzles 06. Seal door 1 02 and seal door 2 03 are each equipped with a transparent observation window 1 020 and a transparent observation window 2 030, respectively. Personnel outside the enclosure 01 can observe the situation inside, and similarly, personnel inside the enclosure 01 can observe the situation outside.

[0036] More specifically, the misting assembly also includes an inlet pipe 07, an inlet solenoid valve 08, an inlet filter 09, an outlet filter 10, and an air breathing valve 11. The inlet pipe 07, the inlet solenoid valve 08, the inlet filter 09, the outlet filter 10, and the air breathing valve 11 are all located within the device installation space. One end of the inlet pipe 07 is connected to an external liquid supply source, and the other end of the inlet pipe 07 is fixed and connected to the liquid storage tank 04. The inlet solenoid valve 08 and the inlet filter 09 are connected in series on the inlet pipe 07. The inlet filter 09 is arranged between the inlet solenoid valve 08 and the liquid storage tank 04 along the length of the inlet pipe 07. The external liquid supply source replenishes the liquid into the liquid storage tank 04 through the inlet pipe 07. The inlet solenoid valve 08 can control the opening and closing of the liquid path of the inlet pipe 07, and the inlet filter 09 can filter the liquid from the external liquid supply source. The inlet of pump 05 is connected to the storage tank 04 via a pipe, and an outlet filter 10 is connected in series between them. The liquid discharged from the storage tank 04 will be filtered by the outlet filter 10 before entering the pump 05. An air breathing valve 11 is fixed and connected to the upper end of the storage tank 04. When the storage tank 04 is filled and discharged, the air breathing valve 11 is designed to achieve pressure balance inside and outside the storage tank 04.

[0037] More specifically, the misting assembly also includes a permeable mesh plate 12 and a liquid collection shell 13. The permeable mesh plate 12 is horizontally arranged inside the housing 01, covering the drain port. Personnel entering the housing 01 can step on the permeable mesh plate 12, which provides support for personnel inside the housing 01 and allows waste liquid inside the housing 01 to pass through it. The liquid collection shell 13 is vertically arranged with an opening at its top. The liquid collection shell 13 is located within the device installation space, and its open end is sealed and fixed to the bottom of the housing 01. The drain port is connected to the liquid collection shell 13, and the bottom of the liquid collection shell 13 has a waste liquid outlet connected to external waste liquid treatment equipment. The liquid collection shell 13 can collect waste liquid inside the housing 01.

[0038] More specifically, the misting assembly also includes a main drain pipe 14, a branch drain pipe 15, and a solenoid valve 16. All three are located within the device mounting space. One end of the main drain pipe 14 is fixed and connected to a waste liquid outlet, and the other end is connected to an external waste liquid treatment device. Waste liquid in the collection tank 13 can be discharged through the main drain pipe 14. A discharge port is provided at the bottom of the storage tank 04. One end of the branch drain pipe 15 is fixed and connected to the discharge port, and the other end is fixed and connected to the main drain pipe 14. Residual liquid at the bottom of the storage tank 04 can also enter the main drain pipe 14. The solenoid valve 16 is connected in series with the branch drain pipe 15, and the opening and closing of the solenoid valve 16 controls the flow of liquid in the branch drain pipe 15. A clearance hole is provided on the outer casing for the main drain pipe 14 and the inlet pipe 07 to pass through.

[0039] The interior of the sealing door 02 is hollow, and the outlet of the external air source is connected to the interior of the sealing door 02. That is, the external air compressor provides compressed air to the sealing door 02, ensuring that the internal air pressure of the sealing door 02 is greater than the atmospheric pressure outside the box 01. In other words, the interior of the sealing door 02 is in a positive pressure state, ensuring the airtightness between the sealing door 02 and the personnel entrance.

[0040] More specifically, the ventilation assembly also includes a perforated mesh plate 23, a mounting shell 24, and a normally closed air valve 25. The perforated mesh plate 23 is located inside the housing 01. The surface of the perforated mesh plate 23 is arranged vertically. The perforated mesh plate 23 covers the air inlet. The perforated mesh plate 23 can both allow air to pass through and prevent large particles of impurities from outside the housing 01 from entering the air inlet. Mounting housing 24 is fixed on housing 01 and is located within the device mounting space. Mounting housing 24 has an air inlet and an air outlet at both ends. Filter element 20 is tightly embedded in mounting housing 24, with its inlet and outlet connected to the air inlet and outlet respectively. Normally closed air valve 25 is fixed on mounting housing 24. The air inlet of normally closed air valve 25 is connected to the atmosphere outside housing 01, and the air outlet of normally closed air valve 25 is connected to the air inlet. When fan 22 is stopped, normally closed air valve 25 is closed. When fan 22 is started, normally closed air valve 25 opens, allowing outside air to enter mounting housing 24 through normally closed air valve 25.

[0041] More specifically, the ventilation assembly also includes a second perforated plate 26, a second mounting shell 27, a third filter element 28, a third mounting shell 29, a partition 30, a cover plate 31, a second normally closed damper 32, and a fourth filter element 33. The second mounting shell 27, the third mounting shell 29, and the second normally closed damper 32 are all located within the device installation space. The outer shell has a second clearance hole for the first normally closed damper 25 and the second normally closed damper 32 to pass through. The air outlet is located on the side wall of the housing 01. The second perforated plate 26 is located inside the housing 01 and covers the air outlet. The second perforated plate 26 allows air to pass through while preventing large particles or personnel from entering the air outlet. Mounting housing 27 has an open end, and its sealing buckle is attached to housing 01. Filter element 21 is located inside mounting housing 27, with its outlet inside. Filter element 21 is a waterproof nylon filter element. The liquid collection housing 13 has a vent hole located above the drain port. The outlet of filter element 3 28 is located inside mounting housing 27, and its inlet connects to the vent hole. Filter element 3 28 is also a waterproof nylon filter element. Exhaust gas inside the liquid collection housing 13 can be drawn away by the fan 22. Before entering the fan 22, the exhaust gas inside the liquid collection housing 13 is filtered by filter element 3 28. The fan 22 is fixed inside mounting housing 27, with its inlet located inside the housing. Mounting housing 29 has an open end and its sealing buckle is located on the outer wall of housing 01. Partition 30 is fixed inside mounting housing 29, dividing the interior of mounting housing 29 into an installation cavity and a ventilation cavity. Housing 01 has an installation port on its side wall that communicates with the interior of the installation cavity. Cover 31 is detachably sealed at the installation port. Filter element 33 can be replaced by opening cover 31. Normally closed damper 32 is fixed to mounting housing 29. The air inlet of normally closed damper 32 communicates with the interior of the installation cavity, and the air outlet of normally closed damper 32 communicates with the atmosphere outside housing 01. When fan 22 is stopped, normally closed damper 32 is closed; when fan 22 is started, normally closed damper 32 is opened. Filter element 4 33 is fixed on partition plate 30. Filter element 4 33 is a high-efficiency filter element, such as a HEPA filter element. Filter element 4 33 is located in the mounting cavity, and the outlet of filter element 4 33 is located in the mounting cavity. Ventilation holes are opened on partition plate 30. The inlet of filter element 4 33 is connected to the ventilation holes. The air outlet of fan 22 is connected to the ventilation cavity. Fan 22 draws gas from the inside of mounting shell 27 and delivers it to mounting shell 3 29. The gas entering mounting shell 3 29 will be filtered by filter element 4 33 to ensure that the gas discharged from normally closed air valve 2 32 meets environmental protection requirements.

[0042] More specifically, it also includes control components, including lighting lamps 34, electric bolt locks 35, door opening switches 36, photoelectric switches 37, electromagnetic locks 39, and controllers 38. Four lighting lamps 34 are provided, all mounted on the top of the enclosure 01. The electric bolt lock 35 is mounted on the second sealing door 03. Two door opening switches 36 are provided, each mounted inside the enclosure 01 and on the outer wall of the enclosure 01 where the first sealing door 02 is located. The photoelectric switch 37 is arranged inside the enclosure 01, located between the first sealing door 02 and the second sealing door 03. The emitting and reflecting ends of the photoelectric switch 37 are fixed to the two inner side walls of the enclosure 01. The electromagnetic lock 39 is mounted on the first sealing door 02. The electromagnetic component of the electromagnetic lock 39 is fixed to the enclosure 01. An adsorption component is fixed on the first sealing door 02. When the first sealing door 02 is closed, the electromagnetic component can attract the adsorption component. The controller 38 is installed on the enclosure 01. The transmitters of the lighting lamp 34, electric bolt lock 35, door opening switch 36, photoelectric switch 37, and electromagnetic lock 39 are all electrically connected to the controller 38.

[0043] Personnel open the door switch 36 to enter the enclosure 01, and the lighting 34 is powered on. Personnel entering the enclosure 01 will trigger the photoelectric switch 37, and the pump 05 and the fan 22 will operate in sequence. Before the fan 22 stops, neither the first sealing door 02 nor the second sealing door 03 will be opened, that is, the electric bolt lock 35 and the electromagnetic lock 39 are both locked. After the fan 22 stops, personnel can open the door switch 36 inside the enclosure 01, thereby opening the second sealing door 03 and allowing personnel to exit the enclosure 01.

[0044] More specifically, the misting assembly also includes a heating wire 17, a temperature sensor 18, and a liquid level sensor 19, all mounted on the liquid storage tank 04. The heating end of the heating wire 17, the detection end of the temperature sensor 18, and the detection end of the liquid level sensor 19 are all located inside the liquid storage tank 04. The heating wire 17, temperature sensor 18, and liquid level sensor 19 are all electrically connected to the controller 38. The heating wire 17 heats the liquid in the liquid storage tank 04, the temperature sensor 18 monitors the temperature of the liquid in the liquid storage tank 04 in real time, and the liquid level sensor 19 monitors the amount of liquid in the liquid storage tank 04.

[0045] When using this mist shower safety protection device: Personnel open the sealed door 02 and enter the chamber 01. Once inside, they trigger the photoelectric switch 37, causing the pump 05 to start and run for a period of time. The atomizing nozzle 06 then begins spraying mist onto the personnel inside the chamber 01. After the pump 05 stops, the fan 22 starts, and outside air enters the chamber 01 after being filtered through filter element 20. Gas replacement occurs inside the chamber 01, and the exhaust gas is discharged after being filtered through filter elements 21, 28, and 33. After the fan 22 stops, personnel can open the sealed door 03 and exit the chamber 01. Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of the present invention, and these modifications or equivalent substitutions should not cause the modified technical solution to deviate from the spirit and scope of the present invention.

Claims

1. A fogging safety protection device, characterized in that, include: The box is arranged vertically and has a personnel entrance and a personnel exit on each of its two side walls. The personnel entrance is equipped with a sealing door 1 that can be blocked, and the personnel exit is equipped with a sealing door 2 that can be blocked. A misting assembly includes a liquid storage tank, a pump, and atomizing nozzles. The liquid storage tank and the pump are both mounted on a housing. The liquid storage tank contains liquid, and the inlet of the pump is connected to the interior of the liquid storage tank. Multiple atomizing nozzles are provided and mounted on the housing, with their spray ends located inside the housing. All atomizing nozzles are connected to the outlet of the pump. A drain port is located at the bottom of the housing and is connected to external wastewater treatment equipment. A ventilation assembly includes a first filter element, a second filter element, and a fan. Both the first and second filter elements are mounted on the housing. The housing has an air inlet and an air outlet communicating with its interior. The inlet of the first filter element is connected to the atmosphere outside the housing, and the outlet of the first filter element is connected to the air inlet. The inlet of the second filter element is connected to the air outlet, and the outlet of the second filter element is connected to the air inlet of the fan. The air outlet of the fan is connected to the atmosphere outside the housing.

2. The fogging safety protection device according to claim 1, characterized in that, The box is a rectangular body, with personnel entrance and personnel exit on two opposite side walls. Atomizing nozzles are installed on the other two opposite side walls and the top of the box. Each of the sealing door one and the sealing door two is provided with a transparent observation window one and a transparent observation window two.

3. The fogging safety protection device according to claim 1, characterized in that, The misting assembly also includes an inlet pipe, an inlet solenoid valve, an inlet filter, an outlet filter, and an air breathing valve. One end of the inlet pipe is connected to an external liquid supply source, and the other end of the inlet pipe is fixed and connected to the storage tank. The inlet solenoid valve and the inlet filter are connected in series on the inlet pipe. The inlet filter is arranged between the inlet solenoid valve and the storage tank along the length of the inlet pipe. The inlet end of the pump is connected to the storage tank through a pipe, and the outlet filter is connected in series between them. The upper end of the storage tank is fixed and connected to the air breathing valve.

4. The fogging safety protection device according to claim 3, characterized in that, The misting assembly also includes a permeable mesh plate and a liquid collection shell. The permeable mesh plate is horizontally arranged inside the housing and covers the drain port. The liquid collection shell is vertically arranged with an opening at its upper end. The opening end of the liquid collection shell is sealed and fixed to the bottom of the housing. The drain port is connected to the liquid collection shell. The bottom of the liquid collection shell is provided with a waste liquid outlet, which is connected to external waste liquid treatment equipment.

5. A fogging safety protection device according to claim 4, characterized in that, The misting assembly also includes a main drain pipe, a branch drain pipe, and a drain solenoid valve. One end of the main drain pipe is fixed and connected to the waste liquid outlet, and the other end of the main drain pipe is connected to an external waste liquid treatment device. The bottom of the storage tank is provided with a discharge port. One end of the branch drain pipe is fixed and connected to the discharge port, and the other end of the branch drain pipe is fixed and connected to the main drain pipe. The drain solenoid valve is connected in series with the branch drain pipe.

6. The fogging safety protection device according to claim 1, characterized in that, The sealed door is hollow inside, and the outlet of the external air source is connected to the inside of the sealed door. The internal air pressure of the sealed door is greater than the atmospheric pressure outside the box.

7. A fogging safety protection device according to claim 1, characterized in that, The ventilation assembly further includes a perforated mesh plate, a mounting shell, and a normally closed air valve. The perforated mesh plate is located inside the housing and covers the air inlet. The mounting shell is fixed to the housing and has an air inlet and an air outlet at both ends. The filter element is tightly embedded in the mounting shell, and its inlet and outlet are connected to the air inlet and the air outlet, respectively. The normally closed air valve is fixed to the mounting shell. Its air inlet is connected to the atmosphere outside the housing, its air outlet is connected to the air inlet, and its air outlet is connected to the air inlet.

8. A fogging safety protection device according to claim 4, characterized in that, The ventilation assembly further includes a second perforated plate, a second mounting shell, a third filter element, a third mounting shell, a partition, a cover, a second normally closed air valve, and a fourth filter element. The air outlet is arranged on the side wall of the housing. The second perforated plate is located inside the housing and covers the air outlet. The second mounting shell is located outside the housing, with one end open and sealed to the housing. The second filter element is arranged inside the second mounting shell, with its outlet located inside the housing. The liquid collection shell has ventilation holes located above the drain outlet. The outlet of the third filter element is located inside the second mounting shell, and its inlet communicates with the ventilation holes. The fan is fixed inside the second mounting shell, with its air inlet located inside the second mounting shell. The second housing has an interior; the third mounting housing has an open end and its sealing buckle is attached to the outer wall of the housing; the partition is fixed inside the third mounting housing, dividing the interior of the third mounting housing into a mounting cavity and a ventilation cavity; the side wall of the housing has a mounting opening communicating with the interior of the mounting cavity, and the cover is detachably sealed at the mounting opening; the second normally closed air valve is fixed on the third mounting housing, the air inlet of the second normally closed air valve is communicating with the interior of the mounting cavity, and the air outlet of the second normally closed air valve is communicating with the atmosphere outside the housing; the fourth filter element is fixed on the partition, the fourth filter element is located inside the mounting cavity, the outlet of the fourth filter element is located inside the mounting cavity, the partition has ventilation holes, and the inlet of the fourth filter element is communicating with the ventilation holes; the outlet of the fan is communicating with the ventilation cavity.

9. A fogging safety protection device according to claim 5, characterized in that, It also includes a control component, which includes a lighting fixture, an electric bolt lock, a door opening switch, a photoelectric switch, an electromagnetic lock, and a controller. The lighting fixture is installed on the top of the enclosure; the electric bolt lock is installed on the second sealed door; there are two door opening switches, each installed inside the enclosure and on the outer wall of the enclosure where the first sealed door is located; the photoelectric switch is arranged inside the enclosure, located between the first and second sealed doors, with its emitting and reflecting ends fixed to the two inner side walls of the enclosure; the electromagnetic lock is installed on the first sealed door; the controller is installed on the enclosure; and the lighting fixture, the electric bolt lock, the door opening switch, the emitting end of the photoelectric switch, and the electromagnetic lock are all electrically connected to the controller.

10. A fogging safety protection device according to claim 9, characterized in that, The misting assembly also includes a heating wire, a temperature sensor, and a liquid level sensor, all mounted on the liquid storage tank. The heating end of the heating wire, the detection end of the temperature sensor, and the detection end of the liquid level sensor are all located inside the liquid storage tank. The heating wire, the temperature sensor, and the liquid level sensor are all electrically connected to the controller.

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