Tray drying equipment and drying method

Abstract

The invention discloses tray drying equipment and a drying method, the tray drying equipment is used for drying cleaned trays, and the tray drying equipment comprises a conveying device used for conveying the trays; each drying chamber is provided with a chamber air outlet connector communicated with the drying chamber; the air blower is provided with an environment air inlet connector, a cavity air inlet connector, an air blower air outlet connector, a first valve body and a second valve body; the air blower is a high-pressure air blower, and the number of air outlet connectors of the air blower corresponds to the number of the drying cavities. Air outlet joints of the air blowers are communicated with the drying chambers respectively and are used for drying the trays; the cavity air outlet connector is communicated with the cavity air inlet connector, and the cavity air inlet connector is communicated with an air inlet of the air blower through the first valve body. The environment air inlet connector is communicated with an air inlet of the air blower through the second valve body. According to the technical scheme, the drying effect and drying speed of the equipment are improved, and the drying yield of the equipment is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of drying equipment, and in particular to a tray drying equipment and a drying method. Background Art

[0002] In the electronics field, pallets are widely used to store and transport sophisticated electronic products. Since these products have high requirements for appearance, pallets need to be thoroughly cleaned to prevent contamination by foreign matter. Usually, the cleaning process includes steps such as water washing, wind cutting, and drying. Among them, drying is one of the key steps. In the drying stage of the existing technical solution, the pallet undergoes four drying processes to ensure that its surface is completely dry. A blower is used in each drying process. The return air intake of the blower uses ambient air and is controlled by an electric control method with a frequency converter to achieve the best drying effect.

[0003] However, the blowers in the prior art use open-loop control for air outlet and return air, which leads to several technical problems. On the one hand, when the air outlet pressure of the blower increases, its temperature will rise rapidly. Once the chamber temperature exceeds the preset temperature of the temperature control table, it is necessary to reduce the air outlet pressure of the blower through the inverter to control the temperature. However, this reduction in air outlet pressure will significantly affect the drying effect and drying speed. Furthermore, due to the diversity and complexity of tray design, if the wind knife pressure and chamber temperature cannot meet the requirements, uneven drying will often result. After the drying process is completed, water vapor and a small amount of foreign matter may still remain on the surface of the tray, which directly affects the quality of the product and reduces the yield.

[0004] In order to improve the drying effect, in many cases, the drying time can only be extended by reducing the running speed of the equipment. Although this approach can improve the drying effect, it will also significantly affect the production rhythm and increase production costs. Therefore, those skilled in the art are in urgent need of improving the existing technology to achieve a more efficient and uniform drying process. Summary of the invention

[0005] The object of the present invention is to provide a tray drying device to solve the technical problems of low drying efficiency and low yield rate of existing devices.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A pallet drying device, used for drying cleaned pallets, comprising:

[0008] A conveying device, used for conveying the tray;

[0009] at least one drying chamber, each of the drying chambers being provided with a chamber air outlet connector communicating with the drying chamber; and

[0010] A blower, wherein the blower is provided with an environment air inlet connector, a chamber air inlet connector, a blower air outlet connector, a first valve body and a second valve body;

[0011] Among them, the blower is a high-pressure blower, and the number of the blower outlet connectors corresponds to the number of the drying chambers; the blower outlet connectors are respectively connected to the drying chambers for drying the trays; the chamber outlet connector is connected to the chamber inlet connector, and the chamber inlet connector is connected to the air inlet of the blower through the first valve body; the ambient air inlet connector is connected to the air inlet of the blower through the second valve body.

[0012] In one embodiment, the drying chamber is provided with an air knife assembly, the blower air outlet connector is connected to the air knife assembly, and the air knife assembly is used to dry both sides of the tray simultaneously.

[0013] In one embodiment, the first valve body and the second valve body are manual valves.

[0014] In one embodiment, the air outlet of the blower is further provided with a pressure detection head and a temperature detection head; the pressure detection head and the temperature detection head are used to monitor the air outlet pressure and air outlet temperature of the blower.

[0015] In one embodiment, the air outlet of the blower is further provided with an electric heater, and the electric heater is used to heat the air outlet of the blower.

[0016] In one embodiment, the ambient air inlet connector is further provided with a filter, and the filter is used to filter the ambient air.

[0017] In one embodiment, a cooling chamber is further included, and the tray is conveyed to the cooling chamber by the conveying device;

[0018] The cooling chamber is provided with a compressed air wind power component, and the gas used by the compressed air wind power component is filtered air.

[0019] In one embodiment, it also includes a material unloading station.

[0020] After the tray is cooled in the cooling chamber, the conveying device can convey the tray to the unloading station;

[0021] The unloading station is provided with a cylinder positioning assembly and a conveying assembly. The conveying assembly is used to cooperate with the conveying device, and the cylinder positioning assembly is used to limit the height direction of the pallet.

[0022] The present invention also provides a tray drying method, which is applied to any of the above tray drying devices, and the method comprises the steps of:

[0023] S1. Place the cleaned pallet on a conveyor, which conveys the pallet to the first drying chamber; each drying chamber is provided with an air knife assembly;

[0024] S2, the blower starts and sends air to the air knife assembly of each drying chamber through the air outlet connector; the air knife assembly uses high-speed airflow to air-dry the pallet and remove moisture from the surface of the pallet;

[0025] S3, connecting the chamber air outlet joint with the chamber air inlet joint to enhance the air circulation power;

[0026] S4. During the air drying process, the pressure sensor and temperature sensor installed at the air outlet of the blower are used to monitor the air outlet pressure and air outlet temperature of the blower to ensure that the air outlet pressure and air outlet temperature are within the preset threshold value;

[0027] S5. When the parameters obtained by the pressure detection head and the temperature detection head are greater than or less than the preset threshold value, the first valve body and the second valve body are manually adjusted to change the opening ratio of the ambient air inlet connector and the chamber air inlet connector, thereby maintaining the air outlet pressure and air outlet temperature of the blower within the preset threshold value.

[0028] Furthermore, the method further comprises the steps of:

[0029] S6. The air-dried pallet is transferred to a cooling chamber through a conveyor. In the cooling chamber, a compressed air wind component uses filtered clean air to cool the pallet, so that the pallet is cooled quickly.

[0030] S7. The cooled pallet is continuously conveyed to the unloading station by the conveying device, and the cylinder positioning assembly can be used to fix the pallet.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The technical solution of the present invention configures the blower as a high-pressure blower by setting a blower, wherein the air outlet of the blower is connected to the blower air outlet connector, the blower air inlet connector is connected to the drying chamber, the chamber air outlet connector is connected to the chamber air inlet connector, and the chamber air inlet connector is connected to the air inlet of the blower. Therefore, the setting of the chamber air outlet connector enables the blower and the drying chamber to form a return air closed loop, and the air discharged from the chamber air outlet connector directly enters the blower, which reduces the power consumption of the blower, thereby reducing the rising speed of the motor temperature in the blower, which is conducive to continuous and efficient production operations.

[0033] Furthermore, the technical solution of the present invention sets an environmental air inlet joint and a chamber air inlet joint on the blower, so that the air outlet and air inlet of the blower form a return air closed loop. When the air outlet pressure of the blower is constant, if the temperature of the drying chamber is too high or too low, it is only necessary to control the opening and closing degree of the first valve body and the second valve body to adjust the air inlet ratio of the environmental air inlet joint and the chamber air inlet joint, so as to realize the temperature control of the drying chamber. Under this setting, the air outlet pressure of the blower will not change, and the chamber temperature can also meet the process requirements. Therefore, the setting of the technical solution of the present invention improves the drying effect and drying speed as well as the yield rate of the equipment drying from the source. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative labor.

[0035] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0036] Figure 1 It is a structural schematic diagram of an embodiment of a tray drying device of the present invention;

[0037] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0038] Figure 3 It is a structural schematic diagram of an embodiment of a drying chamber in the present invention;

[0039] Figure 4 It is a structural schematic diagram of an embodiment of a cooling chamber in the present invention;

[0040] Figure 5 It is a structural schematic diagram of an embodiment of a material unloading station in the present invention;

[0041] Figure 6 It is a structural schematic diagram of an embodiment of a blower in the present invention;

[0042] Illustration: 100. Tray drying equipment;

[0043] 110. Conveying device;

[0044] 120, drying chamber; 121, air knife assembly; 122, chamber air outlet connector; 123, pressure display device; 124, temperature display device;

[0045] 130, blower; 131, environment air inlet connector; 1311, filter; 132, chamber air inlet connector; 133, blower air outlet connector; 134, first valve body; 135, second valve body; 136, pressure detection head; 137, temperature detection head;

[0046] 140. Cooling chamber; 141. Compressed air wind power assembly;

[0047] 150, unloading station; 151, cylinder positioning assembly; 152, transmission assembly;

[0048] 200. Pallet. DETAILED DESCRIPTION

[0049] In order to make the technical purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0051] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0052] The embodiment of the present invention provides a tray 200 drying device 100 .

[0053] See also Figures 1 to 6 In one embodiment of the present invention, the tray 200 drying device 100 is used to dry the cleaned tray 200, and comprises:

[0054] A conveying device 110, used for conveying the tray 200;

[0055] At least one drying chamber 120, each of the drying chambers 120 is provided with a chamber air outlet connector 122 communicating with the drying chamber 120; and,

[0056] A blower 130, wherein the blower 130 is provided with an environment air inlet connector 131, a chamber air inlet connector 132, a blower air outlet connector 133, a first valve body 134 and a second valve body 135;

[0057] Among them, the blower 130 is a high-pressure blower 130, and the number of the blower air outlet connectors 133 corresponds to the number of the drying chambers 120; the blower air outlet connectors 133 are respectively connected to the drying chambers 120 for drying the trays 200; the chamber air outlet connector 122 is connected to the chamber air inlet connector 132, and the chamber air inlet connector 132 is connected to the air inlet of the blower 130 through the first valve body 134; the environmental air inlet connector 131 is connected to the air inlet of the blower 130 through the second valve body 135.

[0058] It can be understood that the technical solution of the present invention configures the blower 130 as a high-pressure blower 130 by setting the blower 130, the air outlet of the blower 130 is connected to the blower air outlet connector 133, the air inlet connector of the blower 130 is connected to the drying chamber 120, the chamber air outlet connector 122 is connected to the chamber air inlet connector 132, and the chamber air inlet connector 132 is connected to the air inlet of the blower 130. Therefore, the setting of the chamber air outlet connector 122 enables the blower 130 and the drying chamber 120 to form a return air closed loop, and the air discharged from the chamber air outlet connector 122 directly enters the blower 130, which reduces the power consumption of the blower 130, thereby reducing the rising speed of the motor temperature in the blower 130, which is conducive to continuous and efficient production operations.

[0059] It is also understandable that in the field of electronics, the tray 200 is widely used to store and transport precision electronic products. Since the appearance requirements of electronic products are relatively high, in order to prevent foreign matter from being contaminated, the tray 200 needs to be cleaned. This type of tray 200 is usually decontaminated by washing, air cutting, drying and other processes, and drying is one of the steps.

[0060] In conventional drying equipment, the air inlet of the blower 130 and the air outlet of the drying chamber 120 are usually designed to superficially improve the drying effect, and an open-loop setting is used, that is, the air inlet of the blower 130 is only ambient air, and the drying chamber 120 is not provided with a special air outlet. The air outlet of the drying chamber 120 is used to circulate between the drying chambers 120 to improve the drying effect of the tray 200. However, in such a situation, due to the continuous operation of the equipment, the air outlet pressure of the blower 130 will become larger and larger, and then the temperature rise rate of the motor of the blower 130 will also increase accordingly. Furthermore, if the motor temperature exceeds the preset temperature, it is necessary to reduce the air outlet pressure of the blower 130 through the inverter control to reduce the temperature. At this time, if the air outlet pressure is reduced, it will greatly affect the drying effect and drying speed of the tray 200.

[0061] On this basis, the technical solution of the present invention sets an environment air inlet joint 131 and a chamber air inlet joint 132 on the blower 130, so that the air outlet and air inlet of the blower 130 form a return air closed loop. When the air outlet pressure of the blower 130 is constant, if the temperature of the drying chamber 120 is too high or too low, it is only necessary to control the opening and closing degree of the first valve body 134 and the second valve body 135 to adjust the air inlet ratio of the environment air inlet joint 131 and the chamber air inlet joint 132, so as to realize the temperature control of the drying chamber 120. Under this setting, the air outlet pressure of the blower 130 will not change, and the chamber temperature can also meet the process requirements. Therefore, the setting of the technical solution of the present invention improves the drying effect and drying speed as well as the yield rate of the equipment drying from the source.

[0062] Based on traditional drying equipment, due to the diversity and complexity of the grids of the tray 200, if the wind pressure and the temperature of the drying chamber 120 cannot meet the requirements, it is difficult to dry the tray 200 evenly. After the drying process is completed, there is still water vapor and a small amount of foreign matter attached to the surface of the tray 200, which ultimately results in a low yield of the dried product. As a result, the drying effect can only be achieved by reducing the operating speed of the equipment and increasing the drying time. However, this will seriously affect the production rhythm and increase the production cost. Therefore, the setting of the technical solution of the present invention does not need to reduce the operating speed of the equipment, and can improve the drying yield and reduce the production cost while ensuring the drying effect, which has significant technical effects and economic value.

[0063] It can also be understood that, in the technical solution of the present invention, the blower 130 does not need to be provided with a frequency converter, thereby reducing the production cost of the tray drying device 100.

[0064] It should also be noted that the drying chamber 120 is provided with an air knife assembly 121, the blower outlet connector 133 is connected to the air knife assembly 121, and the air knife assembly 121 is used to dry both sides of the tray 200 at the same time, thereby further improving the drying efficiency.

[0065] Optionally, the number of the drying chambers 120 is one, two or three; the number of the blowers 130 can be the same as the number of the drying chambers 120 or less than the number of the drying chambers 120, so that at least two drying chambers 120 share one blower 130, thereby reducing the production cost of the tray 200 drying equipment 100.

[0066] like Figure 1 As shown, in a specific embodiment, the number of the drying chambers 120 is four, and the four drying chambers are arranged in sequence and share one blower 130 .

[0067] Optionally, an electric heater is further provided at the air outlet of the blower 130, and the electric heater is used to heat the air outlet of the blower 130 to improve the drying efficiency.

[0068] It can also be understood that when hot air is needed to dry the tray 200 , the provision of the chamber air inlet connector 132 can also improve the utilization rate of hot air and reduce energy consumption.

[0069] Optionally, the ambient air inlet connector 131 is further provided with a filter 1311, and the filter 1311 is used to filter the ambient air.

[0070] Optionally, the first valve body 134 and the second valve body 135 are proportional valves, solenoid valves or ball valves.

[0071] Specifically, since the first valve body 134 and the second valve body 135 are both normally open, the first valve body 134 and the second valve body 135 are preferably manual valves, such as ball valves.

[0072] Furthermore, in a specific embodiment, a pressure probe 136 and a temperature probe 137 are also provided in the air outlet of the blower 130. The pressure probe 136 and the temperature probe 137 are used to monitor the air outlet pressure and air outlet temperature of the blower 130, so as to guide the staff to adjust the opening and closing ratio of the first valve body 134 and the second valve body 135. In this way, the air outlet temperature can be adjusted while the air outlet pressure of the blower 130 remains unchanged.

[0073] Specifically, a pressure display device 123 and a temperature display device 124 are provided on the outer surface of the drying chamber 120 . The pressure display device 123 is connected to the pressure detection head 136 through an air pipe, and the temperature display device 124 is connected to the temperature detection head 137 through a wire.

[0074] The pressure display device 123 and the temperature display device 124 monitor the outlet air pressure and outlet air temperature of the blower 130 in real time, thereby ensuring stable operation and operation of the equipment.

[0075] Please continue reading Figure 1 , Figure 2 and Figure 4 , the tray 200 drying device 100 further includes a cooling chamber 140, and the tray 200 is conveyed to the cooling chamber 140 by the conveying device 110;

[0076] The cooling chamber 140 is provided with a compressed air wind power component 141 , and the compressed air wind power component 141 includes an air filter device, an air compressor, and a bidirectional air knife.

[0077] The air filter device is used to filter and purify air, and the air compressor is used to compress the purified air to provide an air source for the bidirectional air knife; the bidirectional air knife is used to cool down both the front and back sides of the tray 200 at the same time.

[0078] See also Figure 1 and Figure 5 The tray 200 drying device 100 further includes a material unloading station 150. After the tray 200 is cooled in the cooling chamber 140, the conveying device 110 can convey the tray 200 to the material unloading station 150.

[0079] The unloading station 150 is provided with a cylinder positioning assembly 151 and a conveying assembly 152 . The conveying assembly 152 is used to cooperate with the conveying device 110 , and the cylinder positioning assembly 151 is used to limit the height direction of the tray 200 .

[0080] Specifically, the cylinder positioning assembly 151 can be used to fix the tray 200, so as to prevent the tray 200 from accidentally falling after entering the unloading station 150. It can also be understood that, due to the different sizes of different trays 200, the provision of the cylinder positioning assembly 151 can further improve the applicability of the unloading station 150.

[0081] Specifically, the transmission component 152 includes a driving motor, and the driving motor is connected to the transmission device 110 through a coupling, so as to achieve synchronous control of the transmission component 152 and the transmission device 110, reduce the number of driving motors used, and save production costs.

[0082] Furthermore, the conveying device 110 and the conveying assembly 152 are independently controlled. Specifically, the independent control of the conveying device 110 and the conveying assembly 152 is conducive to realizing the automatic unloading of the pallet 200, or the intermittent time of the manual unloading process can be flexibly adjusted, thereby improving the user experience of the operator.

[0083] The technical solution of the present invention further provides a method for drying a tray 200, which is applied to any of the above-mentioned tray 200 drying devices 100, and the method comprises the following steps:

[0084] S1, placing the cleaned tray 200 on the conveying device 110, and the conveying device 110 conveys the tray 200 to the first drying chamber 120; each drying chamber 120 is provided with an air knife assembly 121;

[0085] S2, the blower 130 is started, and the blower 130 sends airflow to the air knife assembly 121 of each drying chamber 120 through the air outlet connector; the air knife assembly 121 uses high-speed airflow to air-dry the tray 200 to remove moisture on the surface of the tray 200;

[0086] S3, connecting the chamber air outlet connector 122 with the chamber air inlet connector 132 to enhance air circulation power;

[0087] S4. During the air drying process, the pressure sensor 136 and the temperature sensor 137 installed at the air outlet of the blower 130 are used to monitor the air outlet pressure and air outlet temperature of the blower 130 to ensure that the air outlet pressure and air outlet temperature are within the preset threshold value;

[0088] S5. When the parameters obtained by the pressure detection head 136 and the temperature detection head 137 are greater than or less than the preset threshold value, manually adjust the first valve body 134 and the second valve body 135 to change the opening ratio of the ambient air inlet connector 131 and the chamber air inlet connector 132, thereby maintaining the outlet air pressure and outlet air temperature of the blower 130 within the preset threshold value.

[0089] Furthermore, the tray 200 drying method further comprises the steps of:

[0090] S6. The air-dried tray 200 is transferred to the cooling chamber 140 through the conveying device 110. In the cooling chamber 140, the compressed air wind component 141 uses filtered clean air to cool the tray 200, so that the tray 200 is cooled quickly.

[0091] S7. The cooled pallet 200 is further conveyed to the unloading station 150 through the conveying device 110, and the cylinder positioning assembly 151 can be used to fix the pallet 200.

[0092] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tray drying device for drying cleaned trays, characterized in that: include: A conveying device, used for conveying the tray; At least one drying chamber, each of the drying chambers being provided with a chamber air outlet connector communicating with the drying chamber; as well as, A blower, wherein the blower is provided with an environment air inlet connector, a chamber air inlet connector, a blower air outlet connector, a first valve body and a second valve body; Among them, the blower is a high-pressure blower, and the number of the blower outlet connectors corresponds to the number of the drying chambers; the blower outlet connectors are respectively connected to the drying chambers for drying the trays; the chamber outlet connector is connected to the chamber inlet connector, and the chamber inlet connector is connected to the air inlet of the blower through the first valve body; the ambient air inlet connector is connected to the air inlet of the blower through the second valve body.

2. The tray drying device according to claim 1, characterized in that: The drying chamber is provided with an air knife assembly, the blower air outlet connector is connected to the air knife assembly, and the air knife assembly is used to dry both sides of the tray simultaneously.

3. The tray drying device according to claim 2, characterized in that: The first valve body and the second valve body are manual valves.

4. The tray drying device according to claim 1, characterized in that: The air outlet of the blower is also provided with a pressure probe and a temperature probe; the pressure probe and the temperature probe are used to monitor the air outlet pressure and air outlet temperature of the blower.

5. The tray drying device according to claim 1, characterized in that: The air outlet of the blower is also provided with an electric heater, and the electric heater is used to heat the air outlet of the blower.

6. The tray drying device according to claim 1, characterized in that: The environmental air inlet connector is also provided with a filter screen, and the filter screen is used to filter the environmental air inlet.

7. The tray drying device according to claim 1, characterized in that: Also included is a cooling chamber, the tray is conveyed to the cooling chamber by the conveying device; The cooling chamber is provided with a compressed air wind power component, and the gas used by the compressed air wind power component is filtered air.

8. The tray drying device according to claim 7, characterized in that: It also includes a material unloading station, and after the pallet is cooled in the cooling chamber, the conveying device can convey the pallet to the material unloading station; The unloading station is provided with a cylinder positioning assembly and a conveying assembly. The conveying assembly is used to cooperate with the conveying device, and the cylinder positioning assembly is used to limit the height direction of the pallet.

9. A tray drying method, applied to the tray drying device according to any one of claims 1 to 8, characterized in that: The method comprises the steps of: S1. Place the cleaned pallet on a conveyor, which conveys the pallet to the first drying chamber; each drying chamber is provided with an air knife assembly; S2, the blower starts and sends air to the air knife assembly of each drying chamber through the air outlet connector; the air knife assembly uses high-speed airflow to air-dry the pallet and remove moisture from the surface of the pallet; S3, connecting the chamber air outlet joint with the chamber air inlet joint to enhance the air circulation power; S4. During the air drying process, the pressure sensor and temperature sensor installed at the air outlet of the blower are used to monitor the air outlet pressure and air outlet temperature of the blower to ensure that the air outlet pressure and air outlet temperature are within the preset threshold value; S5. When the parameters obtained by the pressure detection head and the temperature detection head are greater than or less than the preset threshold value, the first valve body and the second valve body are manually adjusted to change the opening ratio of the ambient air inlet connector and the chamber air inlet connector, thereby maintaining the air outlet pressure and air outlet temperature of the blower within the preset threshold value.

10. The tray drying method according to claim 9, characterized in that: Also includes the steps: S6. The air-dried pallet is transferred to a cooling chamber through a conveyor. In the cooling chamber, a compressed air wind component uses filtered clean air to cool the pallet, so that the pallet is cooled quickly. S7. The cooled pallet is continuously conveyed to the unloading station by the conveying device, and the cylinder positioning assembly can be used to fix the pallet.

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