PP chemical cleaning air drying cabinet

Abstract

The utility model relates to the technical field of air drying cabinets, and discloses a PP chemical cleaning air drying cabinet which comprises a cabinet body and an efficient filtering assembly, the cabinet body is formed by sealing and welding PP plates, one side of the cabinet body is a hollowed-out air inlet plate, an inner side plate made of the PP plates is arranged at the position, close to the air inlet plate, in the cabinet body, and the efficient filtering assembly is arranged on the inner side plate. The inner side plate comprises a pore plate and bent edge strips formed on the periphery of the pore plate in a bent mode, the bent edge strips are welded to a top plate, a bottom plate, a front plate and a rear plate of the cabinet body in a sealed mode, the air inlet plate and the inner side plate are detachably and fixedly connected through PP screws, and the efficient filtering assembly is located between the air inlet plate and the pore plate; the PP chemical cleaning air drying cabinet solves the problem that an existing air drying cabinet is difficult to conduct high-cleanliness air drying.

Description

Technical Field

[0001] The utility model relates to the technical field of air-drying cabinets, in particular to a PP chemical clean air-drying cabinet. Background Art

[0002] In an ultra-clean laboratory for inorganic chemical element analysis, ensuring the cleanliness of the experimental environment and the cleanliness of the laboratory utensils is an indispensable aspect. After the experiment is completed, the laboratory utensils are sometimes needed to be used for the next experiment as soon as possible. However, since the cleaned laboratory utensils contain moisture, their cleanliness cannot be maintained if they are dried by natural air drying and wiping with other items. If samples and strong acid solvents are rashly added to laboratory utensils that do not meet the cleanliness requirements, serious deviations in the experimental results will occur, and even contamination of the experimental samples will occur. At this time, the laboratory utensils need to be air-dried in a Class 100 clean air environment. However, in order to ensure the reuse and preservation of the laboratory utensils in the ultra-clean laboratory for inorganic chemical element analysis, and in order not to affect the accurate performance of the experiment, the air-drying process requires a more stringent processing environment. In order to quickly improve the work efficiency of the laboratory and make full use of the experimental instruments used, and in order to be able to better put them into the experiment, the experimental instruments must maintain their own cleanliness so as not to affect the accuracy of the next stage of the experiment. Therefore, these experimental instruments must be dried under the blowing of 100-level clean air and quickly reach the standard for use.

[0003] There are three main types of air drying cabinets available on the market. One is a large air drying cabinet with a height of more than two meters. One is a metal air drying cabinet used in various laboratories or an air drying cabinet containing metal components. The last one is a natural air drying cabinet that uses natural wind.

[0004] The first type of large air drying cabinet is actually a simplified version of an air drying room. In chemical laboratories performing elemental analysis, air drying rooms are often used to air dry laboratory instruments to prevent contamination and quickly transfer cleaned laboratory instruments to the next stage of the experiment. Smaller laboratories use large air drying cabinets, which are cumbersome to operate, waste space, and are inefficient. They are primarily used for drying and preliminary processing large quantities of large laboratory instruments.

[0005] The second type of metal drying cabinet is more suitable for handling small laboratory utensils. 90% of the materials on the market are metal. To prevent the metal material from affecting the service life of the drying cabinet and the secondary impact on cleaned laboratory utensils, some parts of the cabinet are replaced with non-metallic materials such as plastic and ceramic. However, this cannot completely eliminate the impact caused by the metal material. Such drying cabinets are mostly used in general laboratories, biological laboratories, and laboratories with less stringent requirements for metal quality. They cannot be used for pretreatment experiments for inorganic element analysis.

[0006] Regarding the third type of air drying cabinet, the main problem is its working principle and method. It can avoid the use of metal parts, but its function is limited to utilizing the circulation of natural wind indoors and outdoors, and thus a simple treatment of laboratory equipment. It cannot adjust the speed of the air flow in the air drying cabinet, let alone the cleanliness of the gas. Its role and function are more like a storage cabinet for cleaned laboratory equipment, and it cannot quickly dry the residual moisture in the laboratory equipment. Due to the uncontrollable cleanliness of the air flow, the laboratory equipment may be contaminated, which in turn affects the subsequent experiments.

[0007] No matter which type of air drying cabinet is used, it cannot meet the needs of ultra-clean laboratories for chemical element analysis. The laboratory utensils washed with pure water cannot reach Class 100 clean air, which will cause secondary contamination of the laboratory utensils. Utility Model Content

[0008] The purpose of the utility model is to provide a PP chemical clean air drying cabinet to solve at least one of the above problems existing in the prior art.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A PP chemical clean air drying cabinet, comprising a cabinet body and a high-efficiency filter assembly, wherein the cabinet body is formed by sealing and welding PP sheets, one side of the cabinet body is a hollow air inlet plate, and an inner side plate made of PP sheet material is provided near the air inlet plate in the cabinet body, wherein the inner side plate comprises a perforated plate and a bent edge strip bent around the perforated plate, wherein the bent edge strip is respectively sealed and welded to the top plate, bottom plate, front plate and rear plate of the cabinet body, wherein the air inlet plate and the inner side plate are detachably fixedly connected by PP screws, and the high-efficiency filter assembly is located between the air inlet plate and the perforated plate;

[0011] An exhaust passage is provided on a side of the cabinet away from the inner panel, the exhaust passage extends to the top of the cabinet, an exhaust port is provided on the top of the cabinet, the exhaust port is connected to the exhaust passage to discharge the gas in the cabinet, and a plurality of layer plates are provided in the area between the exhaust passage and the inner panel of the cabinet;

[0012] The cabinet body includes a door panel, and the door panel includes a door frame and a transparent plate arranged in the middle of the door frame.

[0013] This technical solution features a main body constructed entirely of PP, which is bent using sheet metal processing, and then welded to ensure a sealed cabinet. Furthermore, unlike conventional metal products, this design utilizes a single PP sheet, which is then carved, bent, and welded. This completely eliminates the impact of metal on inorganic chemical element analysis experiments, enabling ultra-clean labs to conduct experiments with greater precision and accuracy. It also prevents metal from reacting with acidic solvents during the air-drying process, potentially contaminating freshly cleaned labware with metal elements and significantly impacting experimental accuracy. Long-term use of strong and concentrated acids in pre-processing for inorganic chemical element analysis not only compromises the analysis of metal elements, but also significantly reduces their service life due to their corrosion resistance. Over time, their efficiency and usability decrease. Using PP prevents acidic gases from reacting with the metal during the air-drying process, thus preventing contamination of the labware.

[0014] Since one side of the cabinet is a hollow air inlet plate with a large air inlet area, the air flow into the cabinet can be more evenly distributed, the air inlet area is wider, the air intake volume is more sufficient, and the efficiency of the air drying cabinet is higher; the air flow in the cabinet enters the cabinet through the air inlet plate. Since the high-efficiency filter component is located between the air inlet plate and the orifice plate, the air flow into the cabinet from one side is filtered by the high-efficiency filter component, making the incoming air flow cleaner and more hygienic, which can better protect laboratory utensils that have been washed with pure water after the experiment from being contaminated.

[0015] The PP clean air drying cabinet in this technical solution is installed in a Class 1000 pre-treatment clean room, and a high-efficiency filter component is added to its air inlet side, so that the cleanliness of the airflow entering the air drying cabinet can be further improved, so that the airflow for air drying has a higher level of cleanliness. Such airflow will not bring impurities from the outside air into the air drying cabinet to cause secondary pollution to the laboratory vessels during the process of treating pure water on the surface of laboratory vessels. During the process of air drying acidic solvents, the clean airflow in the air drying cabinet is filtered, and the possibility of adhesion and precipitation with impurities in the air is eliminated. It is also more possible to determine the purity of the laboratory vessels after air drying, thereby achieving the purpose of protecting the samples. Since the air inlet plate and the inner plate are detachably fixed by PP screws, if the high-efficiency filter component is replaced and maintained, the PP screws are removed, and then the high-efficiency filter component is maintained and replaced.

[0016] Since the area between the exhaust duct and the inner panel in the cabinet is provided with multiple shelves, the shelves are used to place laboratory utensils. The internal shelf structure can make better use of space and is suitable for storing commonly used laboratory utensils. The clean airflow passes through the shelf area, dries the laboratory utensils in the cabinet and then enters the exhaust duct on the other side. Since the exhaust duct extends to the top of the cabinet, the top of the cabinet is provided with an exhaust port, which can make the air drying cabinet close to the wall or other instruments without being affected by the exhaust, and its placement freedom is higher. The exhaust port is connected to the exhaust port to discharge the gas in the cabinet, and the gas in the cabinet is drawn out by the exhaust fan through the exhaust port on the top. The exhaust route is also smoother, which can better prevent gas blockage between airflows, thereby causing airflow accumulation, and the inability of fresh air to enter, resulting in various problems such as the air drying cabinet not being able to work normally.

[0017] In summary, this technical solution mainly solves the problem of air-drying experimental utensils after being washed with pure water in the ultra-clean pretreatment laboratory for inorganic element analysis chemistry. After the previous experiment is completed, the experimental utensils can be quickly air-dried with no pollution and high cleanliness after being washed with pure water to ensure the requirements of the next stage of the experiment.

[0018] Furthermore, the exhaust port is connected to a pipe, the air outlet end of the pipe is located outside the laboratory, and the pipe is connected to an exhaust fan, which transports the exhaust gas to the exhaust gas treatment unit.

[0019] Compared with the air supply method of hair dryer, the exhaust fan is not installed in the air drying cabinet itself, which reduces the use of redundant devices in the chemical clean room and effectively reduces the noise problem in the chemical clean room.

[0020] The exhaust fan conveys exhaust gas to the exhaust gas treatment unit. This prevents the airflow from processing laboratory instruments in the air drying cabinet from being discharged directly into the laboratory, potentially contaminating other samples being processed or not, and preventing it from compromising the cleanliness of the cleanroom for chemical and inorganic element analysis. After being treated by the exhaust gas treatment unit, the airflow meets national emission standards before being discharged into the atmosphere, which is also more beneficial for environmental protection. Compared to the market practice of adding a filtration system directly to the exhaust, this solution purifies and discharges the airflow passing through the air drying cabinet directly, eliminating the need for redundant exhaust ducting and the need for integration with the overall cleanroom system. This technical solution eliminates the need for an exhaust device within the air drying cabinet. Firstly, this avoids overly complex structures that could limit the cabinet's primary function and use; secondly, it reduces its size, making it more suitable for use in cleanrooms for inorganic chemical element analysis, without taking up space; and thirdly, it completely eliminates the airflow from the air drying cabinet from being discharged into the laboratory, potentially polluting and impacting laboratory environmental indicators. Furthermore, its connection to the overall laboratory system allows for more regular and efficient cleaning and maintenance, extending its service life.

[0021] Furthermore, a hollow exhaust plate is provided on the side of the cabinet away from the inner plate, the exhaust channel is located between the exhaust plate and the outer plate of the cabinet, and the layer plate is fixed between the orifice plate, the rear plate and the exhaust plate.

[0022] The shelves divide the interior space into three zones: upper, middle, and lower. Each zone is evenly distributed, improving cabinet space utilization. Air flows from left to right in each zone, maintaining consistent air volume and cleanliness. The shelves are fixed between the perforated plate, rear panel, and exhaust panel, further strengthening the internal structure of the PP chemical drying cabinet.

[0023] Furthermore, the exhaust duct is an L-shaped duct. Air enters the duct from the right side and is then exhausted through the top. The right side outer panel must be intact and tightly connected to the top and bottom panels to prevent exhaust gas from entering the laboratory air through gaps and causing contamination.

[0024] The L-shaped exhaust duct is formed by tightly welding the space formed by the bent top plate to the right frame. The top plate must be tightly welded to the inner side panels to prevent exhaust gas from being discharged into the left side through the top space, where it could mix with the gas entering the PP chemical drying cabinet and cause the cleanliness level inside the cabinet to fail to meet the standard.

[0025] Furthermore, in order to achieve a better air intake effect, the air intake holes on the air intake plate are in the shape of long strips.

[0026] Furthermore, the HEPA filter assembly includes an intermediate filter body and an outer frame. The outer frame is made of a non-metallic material, and a sealing strip is affixed between the outer frame and the intermediate filter body. This allows for a better fit between the HEPA filter assembly, the air inlet plate, and the inner side plate, preventing airflow from scattering. The HEPA filter assembly itself further filters the air entering the cabinet, ensuring that the air inside the air drying cabinet reaches Class 100 cleanliness standards. The HEPA filter assembly is a consumable item and requires regular maintenance and replacement to ensure the Class 100 cleanliness standard for the air inside the PP chemical clean air drying cabinet.

[0027] Furthermore, in order to facilitate opening of the cabinet door, a handle is provided on the door panel.

[0028] Furthermore, the door panel comprises two door frames, with a transparent plate sandwiched between them. The two door frames are glued together using a special PP glue to secure the transparent plate between the two door frames, preventing the door panel from deforming or falling off. It should be noted that the cabinet's rear panel is a standard PP sheet, welded to the inner side panels, top panel, exhaust plate, and bottom panel without bending or perforating. To ensure the tightness of each component, the rear panel is also fully welded.

[0029] Furthermore, in order to facilitate observation of the drying situation in the cabinet, the transparent plate is made of acrylic plate.

[0030] Furthermore, in order to facilitate pipeline connection, the exhaust port is located at the rear of the top plate.

[0031] The beneficial effects of the present invention are as follows: the main body of this technical solution is made entirely of PP material, which is bent using sheet metal processing and then completely welded to the adjacent PP sheets, ensuring the cabinet's sealing effect. In addition, compared to metal products on the market, the use of a single PP sheet, which is then carved and then bent and welded, completely avoids the impact of metal on inorganic chemical element analysis experiments, allowing ultra-clean laboratories for inorganic chemical element analysis to conduct experiments with higher precision and accuracy. It also prevents metal substances from reacting with acidic solvents during the air-drying process, causing metal elements to be mixed into freshly cleaned laboratory vessels, thereby significantly affecting the accuracy of the experiment. Metal materials in inorganic chemical element analysis pretreatment environments, such as those involving long-term use of strong and concentrated acids, not only affect the experimental analysis of metal elements, but also significantly reduce their service life due to their lack of corrosion resistance. Over time, their efficiency and usability also gradually decrease. Using PP material prevents acidic gases in the laboratory from chemically reacting with the metal materials during the air-drying process, thus avoiding contamination of the laboratory vessels.

[0032] Since one side of the cabinet is a hollow air inlet plate with a large air inlet area, the air flow into the cabinet can be more evenly distributed, the air inlet area is wider, the air intake volume is more sufficient, and the efficiency of the air drying cabinet is higher; the air flow in the cabinet enters the cabinet through the air inlet plate. Since the high-efficiency filter component is located between the air inlet plate and the orifice plate, the air flow into the cabinet from one side is filtered by the high-efficiency filter component, making the incoming air flow cleaner and more hygienic, which can better protect laboratory utensils that have been washed with pure water after the experiment from being contaminated.

[0033] The PP clean air drying cabinet in this technical solution is installed in a Class 1000 pre-treatment clean room, and a high-efficiency filter component is added to its air inlet side, so that the cleanliness of the airflow entering the air drying cabinet can be further improved, so that the airflow for air drying has a higher level of cleanliness. Such airflow will not bring impurities from the outside air into the air drying cabinet to cause secondary pollution to the laboratory vessels during the process of treating pure water on the surface of laboratory vessels. During the process of air drying acidic solvents, the clean airflow in the air drying cabinet is filtered, and the possibility of adhesion and precipitation with impurities in the air is eliminated. It is also more possible to determine the purity of the laboratory vessels after air drying, thereby achieving the purpose of protecting the samples. Since the air inlet plate and the inner plate are detachably fixed by PP screws, if the high-efficiency filter component is replaced and maintained, the PP screws are removed, and then the high-efficiency filter component is maintained and replaced.

[0034] Since the area between the exhaust duct and the inner panel in the cabinet is provided with multiple shelves, the shelves are used to place laboratory utensils. The internal shelf structure can make better use of space and is suitable for storing commonly used laboratory utensils. The clean airflow passes through the shelf area, dries the laboratory utensils in the cabinet and then enters the exhaust duct on the other side. Since the exhaust duct extends to the top of the cabinet, the top of the cabinet is provided with an exhaust port, which can make the air drying cabinet close to the wall or other instruments without being affected by the exhaust, and its placement freedom is higher. The exhaust port is connected to the exhaust port to discharge the gas in the cabinet, and the gas in the cabinet is drawn out by the exhaust fan through the exhaust port on the top. The exhaust route is also smoother, which can better prevent gas blockage between airflows, thereby causing airflow accumulation, and the inability of fresh air to enter, resulting in various problems such as the air drying cabinet not being able to work normally.

[0035] In summary, this technical solution mainly solves the problem of air-drying experimental utensils after being washed with pure water in the ultra-clean pretreatment laboratory for inorganic element analysis chemistry. After the previous experiment is completed, the experimental utensils can be quickly air-dried with no pollution and high cleanliness after being washed with pure water to ensure the requirements of the next stage of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural diagram of the utility model;

[0037] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0038] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0039] In the figure: high-efficiency filter assembly 1; air inlet plate 2; perforated plate 3; bent edge strip 4; top plate 5; bottom plate 6; front plate 7; exhaust duct 9; exhaust port 10; shelf 11; door frame 12; transparent plate 13; exhaust plate 14; cabinet outer panel 15; handle 16. DETAILED DESCRIPTION

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures of the drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0041] Example 1:

[0042] like Figure 1-Figure 3 As shown, this embodiment provides a PP chemical clean air drying cabinet, including a cabinet body and a high-efficiency filter assembly 1. The cabinet body is made of PP sheets sealed and welded. One side of the cabinet body is a hollow air inlet plate 2. An inner side plate made of PP sheets is provided in the cabinet body near the air inlet plate 2. The inner side plate includes a perforated plate 3 and a bent edge strip 4 bent and formed around the perforated plate 3. The bent edge strip 4 is sealed and welded to the top plate 5, bottom plate 6, front plate 7 and back plate of the cabinet body respectively. The bent edge strip 4 is welded to the inside of the cabinet body. The welding requirement must be complete welding. No gaps can be left at the welding point or the welding rods cannot be incomplete. If the welding is incomplete, external gas will enter the cabinet body through the gap, which will cause the cleanliness of the airflow inside to decrease and fail to meet the requirements of the laboratory. The air inlet plate 2 and the inner side plate are detachably fixed by PP screws (not shown in the figure). The high-efficiency filter assembly 1 is located between the air inlet plate 2 and the perforated plate 3;

[0043] An exhaust duct 9 is provided on one side of the cabinet away from the inner panel. The exhaust duct 9 extends to the top of the cabinet. An exhaust port 10 is provided on the top of the cabinet. The exhaust port 10 is connected to the exhaust duct 9 to discharge the gas in the cabinet. A plurality of shelves 11 are provided in the area between the exhaust duct 9 and the inner panel.

[0044] The cabinet body includes a door panel, and the door panel includes a door frame 12 and a transparent plate 13 arranged in the middle of the door frame 12 .

[0045] This technical solution features a main body constructed entirely of PP, which is bent using sheet metal processing, and then welded to ensure a sealed cabinet. Furthermore, unlike conventional metal products, this design utilizes a single PP sheet, which is then carved, bent, and welded. This completely eliminates the impact of metal on inorganic chemical element analysis experiments, enabling ultra-clean labs to conduct experiments with greater precision and accuracy. It also prevents metal from reacting with acidic solvents during the air-drying process, potentially contaminating freshly cleaned labware with metal elements and significantly impacting experimental accuracy. Long-term use of strong and concentrated acids in pre-processing for inorganic chemical element analysis not only compromises the analysis of metal elements, but also significantly reduces their service life due to their corrosion resistance. Over time, their efficiency and usability decrease. Using PP prevents acidic gases from reacting with the metal during the air-drying process, thus preventing contamination of the labware.

[0046] Since one side of the cabinet is a hollow air inlet plate 2 with a large air inlet area, the air flow into the cabinet can be more evenly distributed, the air inlet area is wider, the air intake is more sufficient, and the efficiency of the air drying cabinet is higher; the air flow in the cabinet enters the cabinet through the air inlet plate 2, and since the high-efficiency filter component 1 is located between the air inlet plate 2 and the orifice plate 3, the air flow into the cabinet from one side is filtered by the high-efficiency filter component 1, so that the cleanliness of the incoming air flow is higher and cleaner, which can better protect the laboratory utensils that have been washed with pure water after the experiment from being contaminated.

[0047] The PP clean air drying cabinet in this technical solution is installed in a Class 1000 pre-treatment clean room, and a high-efficiency filter assembly 1 is added to its air inlet side, so that the cleanliness of the airflow entering the air drying cabinet can be further improved, so that the airflow for air drying has a higher level of cleanliness. Such airflow will not bring impurities from the outside air into the air drying cabinet to cause secondary pollution to the laboratory vessels during the process of treating pure water on the surface of laboratory vessels. During the process of air drying acidic solvents, the clean airflow in the air drying cabinet is filtered, and the possibility of adhesion and precipitation with impurities in the air is eliminated. It is also more possible to determine the purity of the laboratory vessels after air drying, thereby achieving the purpose of protecting the samples. Since the air inlet plate 2 and the inner plate are detachably fixed by PP screws, if the high-efficiency filter assembly 1 is replaced and maintained, the PP screws are removed, and then the high-efficiency filter assembly 1 is maintained and replaced.

[0048] Since the area between the exhaust duct 9 and the inner panel in the cabinet is provided with multiple shelves 11, the shelves 11 are used to place laboratory utensils. The internal increase of the shelf 11 structure can make better use of space and is suitable for the storage of commonly used laboratory utensils. The clean airflow passes through the shelf 11 area, dries the laboratory utensils in the cabinet and then enters the exhaust duct 9 on the other side. Since the exhaust duct 9 extends to the top of the cabinet, the top of the cabinet is provided with an exhaust port 10, which can make the air drying cabinet close to the wall or other instruments without being affected by the exhaust, and its placement freedom is higher. The exhaust port 10 is connected to the exhaust duct 9 to discharge the gas in the cabinet, and the gas in the cabinet is drawn out by the exhaust fan through the exhaust port 10 on the top. The exhaust route is also smoother, which can better prevent gas blockage between airflows, thereby causing airflow accumulation, and fresh air cannot enter, resulting in various problems that the air drying cabinet cannot work normally.

[0049] In summary, this technical solution mainly solves the problem of air-drying experimental utensils after being washed with pure water in the ultra-clean pretreatment laboratory for inorganic element analysis chemistry. After the previous experiment is completed, the experimental utensils can be quickly air-dried with no pollution and high cleanliness after being washed with pure water to ensure the requirements of the next stage of the experiment.

[0050] Example 2:

[0051] This embodiment is optimized based on the above embodiment 1.

[0052] The exhaust port 10 is connected to a pipe, the air outlet end of the pipe (not shown in the figure) is located outside the laboratory, the pipe (not shown in the figure) is connected to an exhaust fan (not shown in the figure), and the exhaust fan (not shown in the figure) transports the exhaust gas to the exhaust gas treatment unit (not shown in the figure).

[0053] Compared with the air supply method of hair dryer, the exhaust fan is not installed in the air drying cabinet itself, which reduces the use of redundant devices in the chemical clean room and effectively reduces the noise problem in the chemical clean room.

[0054] The exhaust fan conveys exhaust gas to the exhaust gas treatment unit. This prevents the airflow from processing laboratory instruments in the air drying cabinet from being discharged directly into the laboratory, potentially contaminating other samples being processed or not, and preventing it from compromising the cleanliness of the cleanroom for chemical and inorganic element analysis. After being treated by the exhaust gas treatment unit, the airflow meets national emission standards before being discharged into the atmosphere, which is also more beneficial for environmental protection. Compared to the market practice of adding a filtration system directly to the exhaust, this solution purifies and discharges the airflow passing through the air drying cabinet directly, eliminating the need for redundant exhaust ducting and the need for integration with the overall cleanroom system. This technical solution eliminates the need for an exhaust device within the air drying cabinet. Firstly, this avoids overly complex structures that could limit the cabinet's primary function and use; secondly, it reduces its size, making it more suitable for use in cleanrooms for inorganic chemical element analysis, without taking up space; and thirdly, it completely eliminates the airflow from the air drying cabinet from being discharged into the laboratory, potentially polluting and impacting laboratory environmental indicators. Furthermore, its connection to the overall laboratory system allows for more regular and efficient cleaning and maintenance, extending its service life.

[0055] Example 3:

[0056] This embodiment is optimized based on the above embodiment 1.

[0057] A hollow exhaust plate 14 is provided on the side of the cabinet away from the inner plate. The exhaust duct 9 is located between the exhaust plate 14 and the cabinet outer plate 15. The layer plate 11 is fixed between the orifice plate 3, the back plate and the exhaust plate 14.

[0058] Shelf plate 11 divides the interior space into three evenly spaced zones: upper, middle, and lower. Each zone is evenly distributed, improving cabinet space utilization. Airflow in each zone flows from left to right, maintaining consistent air volume and cleanliness. Shelf plate 11 is secured between perforated plate 3, the rear panel, and exhaust plate 14, further strengthening the internal structure of the PP chemical drying cabinet.

[0059] Example 4:

[0060] This embodiment is optimized based on the above embodiment 1.

[0061] The exhaust duct 9 is an L-shaped exhaust duct 9. The air enters the exhaust duct 9 from the right side and then is discharged through the top. The right side outer panel of the cabinet must ensure its integrity and tightness of connection with the top and bottom panels 6 to prevent exhaust gas from being discharged into the laboratory air through the gap, thereby causing pollution.

[0062] The L-shaped exhaust duct 9 is formed by tightly welding the space formed by the bending of the top plate 5 to the L-shaped exhaust plate 3. The top plate 5 must be tightly welded to the inner side panels to prevent exhaust gas from being discharged to the left through the top space and mixing with the gas entering the PP chemical drying cabinet, resulting in substandard cleanliness inside the cabinet.

[0063] Example 5:

[0064] This embodiment is optimized based on the above embodiment 1.

[0065] In order to achieve a better air intake effect, the air intake holes on the air intake plate 2 are in the shape of long strips.

[0066] Example 6:

[0067] This embodiment is optimized based on the above embodiment 1.

[0068] The high-efficiency filter assembly 1 includes an intermediate filter body and an outer frame (not shown in the figure). The outer frame (not shown in the figure) is made of a non-metallic material. A sealing strip (not shown in the figure) is affixed between the outer frame (not shown in the figure) and the intermediate filter body. This allows the high-efficiency filter assembly 1 to better fit the air inlet plate 2 and the inner plate, preventing airflow from wandering around. The function of the high-efficiency filter assembly 1 itself is to further filter the air entering the cabinet, ensuring that the air inside the air drying cabinet reaches Class 100 cleanliness. The high-efficiency filter assembly 1 is a consumable item and requires regular maintenance and replacement to ensure the Class 100 cleanliness standard for the air inside the PP chemical clean air drying cabinet.

[0069] Example 7:

[0070] This embodiment is optimized based on the above embodiment 1.

[0071] In order to facilitate opening the cabinet door, a handle 16 is provided on the door panel.

[0072] Example 8:

[0073] This embodiment is optimized based on the above embodiment 1.

[0074] The door panel consists of two door frames 12, with a transparent panel 13 sandwiched between them. The two door frames 12 are glued together using a special PP glue to secure the transparent panel 13 between them, preventing the door panel from deforming or falling off. It should be noted that the cabinet's rear panel is a standard PP sheet, welded to the inner side panels, top panel 5, exhaust panel 14, and bottom panel 6 without bending or perforating. To ensure the tightness of each component, the rear panel is also fully welded.

[0075] Example 9:

[0076] This embodiment is optimized based on the above embodiment 1.

[0077] In order to facilitate observation of the drying situation in the cabinet, the transparent plate 13 is made of acrylic plate.

[0078] Example 10:

[0079] This embodiment is optimized based on the above embodiment 1.

[0080] In order to facilitate pipeline connection, the exhaust port 10 is located at the rear of the top plate 5 .

[0081] It should be noted that full welding requirements are strictly implemented between all panels that need to be connected in the PP chemical air drying cabinet. In most places, double-sided welding is used to completely replace gluing to achieve absolute sealing at the joints of the air drying cabinet.

[0082] The air drying cabinet is compact and small, does not take up space, and can be placed anywhere with an exhaust duct. In addition, the air drying cabinet utilizes its own exhaust port 10 to combine with the exhaust gas treatment system of the entire clean room, reducing the need for independent maintenance of the air drying cabinet and enhancing its exhaust gas treatment capability.

[0083] The top plate 5 is also formed by bending and welding a plate, and an exhaust port 10 and an exhaust interface are provided at the rear outer side of the top to connect to the exhaust duct of the clean laboratory.

[0084] To maintain the aesthetics of the PP chemical drying cabinet, the bottom plate 6 is essentially identical to the top plate 5, with the only difference being that no holes are reserved in the plates. Gas does not pass through the space created by the bottom plate 6, and no airflow passes through the interlayer formed by the bottom plate 6. Therefore, the welds between the bottom plate 6 and the other components must be completely welded to prevent any gas leakage or ingress.

[0085] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A PP chemical clean air drying cabinet, characterized by: It includes a cabinet body and a high-efficiency filter assembly. The cabinet body is made of PP sheets sealed and welded. One side of the cabinet body is a hollow air inlet plate. An inner plate made of PP sheets is provided near the air inlet plate in the cabinet body. The inner plate includes a perforated plate and a bent edge strip bent around the perforated plate. The bent edge strip is sealed and welded to the top plate, bottom plate, front plate and rear plate of the cabinet body respectively. The air inlet plate and the inner plate are detachably fixedly connected by PP screws. The high-efficiency filter assembly is located between the air inlet plate and the perforated plate. An exhaust passage is provided on a side of the cabinet away from the inner panel, the exhaust passage extends to the top of the cabinet, an exhaust port is provided on the top of the cabinet, the exhaust port is connected to the exhaust passage to discharge the gas in the cabinet, and a plurality of layer plates are provided in the area between the exhaust passage and the inner panel of the cabinet; The cabinet body includes a door panel, and the door panel includes a door frame and a transparent plate arranged in the middle of the door frame.

2. A PP chemical clean air drying cabinet according to claim 1, characterized in that: The exhaust port is connected to a pipe, the air outlet end of the pipe is located outside the laboratory, and the pipe is connected to an exhaust fan, which transports the exhaust gas to the exhaust gas treatment unit.

3. The PP chemical clean air drying cabinet according to claim 1, characterized in that: A hollow exhaust plate is provided on one side of the cabinet away from the inner plate, the exhaust passage is located between the exhaust plate and the cabinet outer plate, and the layer plate is fixed between the orifice plate, the rear plate and the exhaust plate.

4. The PP chemical clean air drying cabinet according to claim 1, characterized in that: The exhaust passage is an L-shaped exhaust passage.

5. The PP chemical clean air drying cabinet according to claim 1, characterized in that: The air inlet holes on the air inlet plate are in the shape of long strips.

6. The PP chemical clean air drying cabinet according to claim 1, characterized in that: The high-efficiency filter assembly includes a middle filter body and an outer frame. The outer frame is made of non-metallic material. A sealing strip is pasted between the outer frame and the middle filter body.

7. The PP chemical clean air drying cabinet according to claim 1, characterized in that: A handle is provided on the door panel.

8. The PP chemical clean air drying cabinet according to claim 1, characterized in that: The door panel comprises two door frames, a transparent plate is sandwiched between the two door frames, and the two door frames are glued together using PP special glue to fix the transparent plate between the two door frames.

9. The PP chemical clean air drying cabinet according to claim 8, characterized in that: The transparent plate is made of an acrylic plate.

10. The PP chemical clean air drying cabinet according to claim 1, characterized in that: The air outlet is located at the rear of the top plate.

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