Tunnel sterilizing dryer

Abstract

The utility model provides a tunnel sterilizing dryer which comprises a shell, a first air supply fan, a first motor, a cooling device and a cooling circulation system, a drying channel is defined in the shell, and the drying channel comprises a high-temperature sterilizing section. The first air supply fan is used for conveying high-temperature airflow to the high-temperature sterilization section. The first motor is connected with the first air supply fan so as to provide power for the first air supply fan. The cooling medium is configured to cool the first motor, and the cooling medium is contained in the cooling device. The cooling circulation system comprises a cooling pipeline and a return pipe, an outlet of the cooling device is connected with an inlet of the first motor through the cooling pipeline, and an inlet of the cooling device is connected with an outlet of the first motor through the return pipe, so that the cooling medium circularly flows between the cooling device and the motor. The tunnel sterilizing dryer provided by the utility model can solve the problem that the cooling effect of the motor is not stable, and achieves the effect of stably cooling the motor.

Description

Technical Field

[0001] This utility model relates to the field of sterilization and drying technology, and in particular to a tunnel sterilization and drying machine. Background Technology

[0002] Tunnel sterilization dryers are key pieces of equipment widely used in the pharmaceutical industry, primarily for drying, sterilizing, depyrogenating, and cooling pharmaceutical glass containers such as vials and ampoules. During operation, a motor drives a blower to deliver high-temperature airflow into the tunnel, directly exposing the items inside to the hot air for sterilization. The motor generates significant heat during prolonged operation, requiring timely cooling. Traditional cooling methods involve flowing cooling water over the motor's heat-generating components to remove heat. However, traditional methods can suffer from intermittent cooling due to water supply issues, leading to unstable cooling and potential safety hazards. Furthermore, the direct discharge of used cooling water results in substantial water waste. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide a tunnel sterilization dryer that overcomes or at least partially solves the above problems.

[0004] One objective of this invention is to solve the problem of unstable motor cooling effect and achieve stable motor cooling.

[0005] Another objective of this invention is to save water and reduce the waste of water resources.

[0006] Specifically, this utility model provides a tunnel sterilization and drying machine, comprising:

[0007] A housing, wherein a drying channel is defined within the housing, the drying channel including a high-temperature sterilization section;

[0008] The first air supply fan is used to deliver high-temperature airflow to the high-temperature sterilization section.

[0009] A first motor is connected to the first air blower to provide power to the first air blower;

[0010] A cooling device, wherein the cooling medium is configured to cool the first motor, and the cooling device contains the cooling medium.

[0011] A cooling circulation system is provided, comprising a cooling pipe and a return pipe. The outlet of the cooling device is connected to the inlet of the first motor through the cooling pipe, and the inlet of the cooling device is connected to the outlet of the first motor through the return pipe, so that the cooling medium circulates between the cooling device and the first motor.

[0012] Optionally, multiple first air supply fans are provided, and each first motor is provided in a one-to-one correspondence with a first air supply fan; all multiple first motors are connected to the cooling device.

[0013] Optionally, the cooling circulation system further includes:

[0014] A pipe visualization device is installed on the cooling pipe and / or the return pipe.

[0015] Optionally, the pipe visualization device includes a glass pipe sight glass;

[0016] The cooling pipe includes a first cooling pipe section and a second cooling pipe section, and the two ends of the glass pipe sight glass are respectively sealed to the first cooling pipe section and the second cooling pipe section; and / or

[0017] The return pipe includes a first return pipe section and a second return pipe section, and the two ends of the glass pipe sight glass are respectively sealed to the first return pipe section and the second return pipe section.

[0018] Optionally, the pipe visualization device includes a flow rate viewing window.

[0019] Alternatively, the cooling medium may be purified water or air.

[0020] Optionally, the cooling medium is purified water; the cooling device includes:

[0021] Water tank, the water tank being used to store purified water;

[0022] A refrigeration unit, used to cool the purified water in the water tank;

[0023] The inlet of the water tank is connected to the outlet of the return pipe, and the outlet of the water tank is connected to the inlet of the cooling pipe; or

[0024] The inlet of the water tank is connected to the outlet of the return pipe, the outlet of the water tank is connected to the inlet of the chiller, and the outlet of the chiller is connected to the inlet of the cooling pipe.

[0025] Optionally, the tunnel sterilization dryer further includes:

[0026] A temperature sensor is installed at the outlet of the water tank and is used to monitor the temperature of the purified water in the water tank.

[0027] A control cabinet is provided, in which the temperature sensor and the chiller are connected. The control cabinet includes a display screen and an operation panel. The display screen is used to display the temperature of the purified water in the water tank, and the operation panel is used to adjust the cooling temperature of the chiller.

[0028] Optionally, the tunnel sterilization dryer further includes:

[0029] A water supply pipe, one end of which is connected to a water source, and the other end of which is connected to the inlet of the water tank or the inlet of the first motor;

[0030] A water supply valve is installed on the water supply pipe to allow the water supply pipe to be opened or closed.

[0031] Optionally, the drying channel further includes a preheating section and a cooling section, wherein the preheating section, the high-temperature sterilization section, and the cooling section are arranged sequentially;

[0032] The tunnel sterilization and drying machine also includes:

[0033] The second air supply fan is used to deliver high-temperature airflow to the preheating section;

[0034] A third air supply fan is used to deliver low-temperature airflow to the cooling section;

[0035] The second motor is connected to the second air blower and provides power to the second air blower;

[0036] The third motor is connected to the third air supply fan and provides power to the third air supply fan;

[0037] A conveyor belt is disposed at the bottom of the drying channel;

[0038] An exhaust fan is provided below the conveyor belt. Multiple exhaust fans are provided, and the multiple exhaust fans are respectively provided in the preheating section, the high-temperature sterilization section and the cooling section.

[0039] This utility model discloses a tunnel sterilization and drying machine, which includes a high-temperature sterilization section, a first air supply fan, a first motor, and a cooling device. The first motor is connected to the first air supply fan, which delivers high-temperature airflow to the high-temperature sterilization section. A cooling pipe and a return pipe connect the first motor and the cooling device. During operation, the first motor drives the first air supply fan, which delivers high-temperature airflow to the high-temperature sterilization section. Simultaneously, the cooling medium in the cooling device enters the first motor through the cooling pipe, exchanging heat with the motor to cool it. After heat exchange, the cooling medium returns to the cooling device through the return pipe for further cooling, repeating the cycle. The cooling medium circulates between the cooling device and the first motor through the cooling pipe and the return pipe, creating a closed-loop cooling system. The cooling medium continuously cools the first motor, resulting in a stable cooling effect and avoiding safety hazards caused by intermittent cooling. Furthermore, the recycling of the cooling medium significantly saves water resources, reduces energy waste, and lowers production costs.

[0040] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0041] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0042] Figure 1 This is a schematic structural diagram of the internal structure of a tunnel sterilization dryer according to an embodiment of the present invention;

[0043] Figure 2 This is a schematic system diagram of the cooling process of a first motor according to an embodiment of the present invention. Detailed Implementation

[0044] The following reference Figure 1 and Figure 2This invention describes a tunnel sterilization and drying machine according to an embodiment of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0045] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] Figure 1This is a schematic structural diagram of the internal structure of a tunnel sterilization dryer according to an embodiment of the present invention, as shown below. Figure 1 As shown, and with reference Figure 2 This utility model provides a tunnel sterilization dryer, including a housing 10, a first air supply fan 210, a first motor 310, a cooling device 40, and a cooling circulation system 50. The housing 10 defines a drying channel 110, which includes a high-temperature sterilization section 111. The first air supply fan 210 delivers high-temperature airflow to the high-temperature sterilization section 111. The first motor 310 is connected to the first air supply fan 210 to provide power to it. A cooling medium is configured to cool the first motor 310, and the cooling device 40 contains the cooling medium. The cooling circulation system 50 includes a cooling pipe 510 and a return pipe 520. The outlet of the cooling device 40 is connected to the inlet of the first motor 310 via the cooling pipe 510, and the inlet of the cooling device 40 is connected to the outlet of the first motor 310 via the return pipe 520, so that the cooling medium circulates between the cooling device 40 and the first motor 310.

[0049] In this embodiment, the tunnel sterilization dryer includes a high-temperature sterilization section 111, a first air supply fan 210, a first motor 310, and a cooling device 40. The first motor 310 is connected to the first air supply fan 210, which delivers high-temperature airflow to the high-temperature sterilization section 111. A cooling pipe 510 and a return pipe 520 connect the first motor 310 and the cooling device 40. When the tunnel sterilization dryer is running, the first motor 310 drives the first air supply fan 210, which delivers high-temperature airflow to the high-temperature sterilization section 111. Simultaneously, the cooling medium in the cooling device 40 enters the first motor 310 through the cooling pipe 510, where it exchanges heat with the motor to cool it down. After heat exchange, the cooling medium returns to the cooling device 40 through the return pipe 520 for further cooling, and the cycle repeats. The cooling medium circulates between the cooling device 40 and the first motor 310 through the cooling pipe 510 and the return pipe 520. The cooling circulation system 50 is a closed loop, and the cooling medium continuously cools the first motor 310, resulting in a relatively stable cooling effect and avoiding safety accidents caused by intermittent cooling. Furthermore, the recycling of the cooling medium significantly saves water resources, reduces energy waste, and lowers production costs.

[0050] In some embodiments of this utility model, such as Figure 1As shown, the drying channel 110 also includes a preheating section 112 and a cooling section 113, arranged sequentially from front to back. The tunnel sterilization dryer also includes a second air supply fan 220, a third air supply fan 230, a second motor 320, a third motor 330, a conveyor belt 90, and an exhaust fan 240. The second air supply fan 220 is located at the top of the preheating section 112, supplying high-temperature airflow to it. The third air supply fan 230 is located at the top of the cooling section 113, supplying low-temperature airflow to it. The second motor 320 is connected to the second air supply fan 220, providing power to it. The third motor 330 is connected to the third air supply fan 230, providing power to it as well. The conveyor belt 90 is located at the bottom of the drying channel 110. The exhaust fan 240 is located below the conveyor belt 90. There are multiple exhaust fans 240, which are respectively located in the preheating section 112, the high-temperature sterilization section 111, and the cooling section 113.

[0051] In this embodiment, the drying channel 110 inside the tunnel sterilization dryer is divided into a preheating section 112, a high-temperature sterilization section 111, and a cooling section 113. A second air supply fan 220 is installed at the top of the preheating section 112 and is driven to rotate by a second motor 320. A third air supply fan 230 is installed at the top of the cooling section 113 and is driven to rotate by a third motor 330. A conveyor belt 90 is installed at the bottom of the drying channel 110. Multiple exhaust fans 240 are installed below the conveyor belt 90 to drive airflow outward from the drying channel 110. During operation of the tunnel sterilization dryer, the second air supply motor blows high-temperature airflow into the preheating section 112, the first air supply motor blows high-temperature airflow into the high-temperature sterilization section 111, and the third air supply motor blows low-temperature airflow into the cooling section 113. The conveyor belt 90 carries the items to be dried from the preheating section 112 to the cooling section 113. The items are first preheated in the preheating section 112, then dried and sterilized in the high-temperature sterilization section 111, and finally cooled in the cooling section 113, thus completing the drying process of the items.

[0052] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, multiple first air supply fans 210 are provided, and one first motor 310 is provided in correspondence with each first air supply fan 210. All of the multiple first motors 310 are connected to the cooling device 40.

[0053] In this embodiment, multiple first air supply fans 210 are provided, and multiple first air supply fans 210 operate simultaneously to increase the air intake in the high-temperature sterilization section 111, thereby improving the drying and sterilization efficiency.

[0054] Furthermore, there are two first air supply fans 210, and correspondingly, there are two first motors 310. The two first motors 310 are connected in parallel, and the cooling device 40 is used to cool the first motors 310.

[0055] In some embodiments of this utility model, such as Figure 2 As shown, the cooling circulation system 50 also includes a pipe visualization device 530, which is installed on the cooling pipe 510.

[0056] In this embodiment, a pipe visualization device 530 is installed on the cooling pipe 510, specifically between the outlet of the cooling device 40 and the inlet of the first motor 310. When the cooling medium flows from the cooling device 40 to the first motor 310, it can be observed through the pipe visualization device 530. This solves the problem of difficult-to-detect faults in the cooling circulation system 50, avoids intermittent cooling of the first motor 310, improves the stability of the first motor 310's operation, reduces the occurrence of safety accidents, and ultimately enhances the stability and safety of the tunnel sterilization dryer's operation.

[0057] In some embodiments of this utility model, such as Figure 2 As shown, the pipe visualization device 530 includes a glass pipe sight glass 531, and the cooling pipe 510 includes a first cooling pipe section 511 and a second cooling pipe section 512. The two ends of the glass pipe sight glass 531 are respectively sealed and connected to the first cooling pipe section 511 and the second cooling pipe section 512.

[0058] In this embodiment, the pipeline visualization device 530 includes a glass pipeline sight glass 531, and the cooling pipeline 510 includes a first cooling pipeline section 511 and a second cooling pipeline section 512. The glass pipeline sight glass 531 is installed between the first cooling pipeline section 511 and the second cooling pipeline section 512. When the cooling circulation system 50 is running, the cooling medium flows from the cooling device 40 to the first cooling pipeline section 511, passes through the glass pipeline sight glass 531, and then flows through the second cooling pipeline section 512 to the first motor 310 to cool it down. By observing whether the cooling medium is flowing through the glass pipeline sight glass 531, the operating status of the cooling circulation system 50 is more intuitive, thereby enabling timely detection of malfunctions in the cooling circulation system 50, avoiding intermittent cooling of the first motor 310, improving the stability of the first motor 310's operation, reducing the occurrence of safety accidents, and thus improving the stability and safety of the tunnel sterilization dryer's operation.

[0059] In some other embodiments of the present invention, the tunnel sterilization dryer further includes a pipe visualization device 530, which is installed on the return pipe 520.

[0060] In this embodiment, a pipe visualization device 530 is installed on the return pipe 520, specifically between the outlet of the first motor 310 and the inlet of the cooling device 40. When the cooling medium flows from the first motor 310 to the cooling device 40, it can be observed through the pipe visualization device 530. This solves the problem of difficult-to-detect faults in the cooling circulation system 50, avoids intermittent cooling of the first motor 310, improves the stability of the first motor 310's operation, reduces the occurrence of safety accidents, and ultimately enhances the stability and safety of the tunnel sterilization dryer's operation.

[0061] In some other embodiments of the present invention, the pipe viewing device 530 includes a glass pipe sight glass 531, the return pipe 520 includes a first return pipe section and a second return pipe section, and the two ends of the glass pipe sight glass 531 are respectively sealed and connected to the first return pipe section and the second return pipe section.

[0062] In this embodiment, the pipeline visualization device 530 includes a glass pipeline sight glass 531, and the return pipeline 520 includes a first return pipeline section and a second return pipeline section. The glass pipeline sight glass 531 is installed between the first return pipeline section and the second return pipeline section. When the cooling circulation system 50 is running, the cooling medium flows from the first motor 310 to the first return pipeline section, passes through the glass pipeline sight glass 531, and then flows through the second return pipeline section to the cooling device 40. Observing whether the cooling medium is flowing through the glass pipeline sight glass 531 makes the operating status of the cooling circulation system 50 more intuitive, thereby enabling timely detection of malfunctions in the cooling circulation system 50, avoiding intermittent cooling of the first motor 310, improving the stability of the first motor 310's operation, reducing the occurrence of safety accidents, and thus improving the stability and safety of the tunnel sterilization dryer's operation.

[0063] In some other embodiments of the present invention, the tunnel sterilization dryer further includes a pipe visualization device 530, which is installed on the cooling pipe 510 and the return pipe 520.

[0064] In this embodiment, both the cooling pipe 510 and the return pipe 520 are equipped with pipe visualization devices 530, making the flow of the cooling medium visible in the cooling pipe 510 and the return pipe 520. When the cooling circulation system 50 malfunctions, the location of the fault can be quickly determined, leading to faster problem resolution. For example, if cooling medium is flowing through the pipe visualization device 530 on the cooling pipe 510, but not through the pipe visualization device 530 on the return pipe 520, it can be determined that the fault occurs between the outlet of the first motor 310 and the inlet of the cooling pipe 510.

[0065] In some other embodiments of this utility model, the pipe viewing device 530 includes a glass pipe sight glass 531, the cooling pipe 510 includes a first cooling pipe section 511 and a second cooling pipe section 512, and the two ends of the glass pipe sight glass 531 are respectively sealed and connected to the first cooling pipe section 511 and the second cooling pipe section 512. The return pipe 520 includes a first return pipe section and a second return pipe section, and the two ends of the glass pipe sight glass 531 are respectively sealed and connected to the first return pipe section and the second return pipe section.

[0066] In some embodiments of this utility model, the pipe visualization device 530 includes a flow rate viewing window.

[0067] In this embodiment, the pipe visualization device 530 includes a flow window, through which the flow window is used to observe whether there is cooling medium flowing in the cooling pipe 510 or the return pipe 520.

[0068] In some embodiments of this invention, the cooling medium is purified water or air.

[0069] In this embodiment, the cooling medium is purified water or air, meaning the first motor 310 can be cooled by water cooling or air cooling. When purified water is used as the cooling medium, it is less prone to scaling, improving the cooling effect of the cooling circulation system 50, preventing equipment blockage in the cooling circulation system 50, extending the service life of the equipment, and reducing costs. Furthermore, purified water is pure, free of impurities and microorganisms, and will not pollute the environment even when discharged, thus contributing to the protection of the ecological environment.

[0070] In some embodiments of this invention, the cooling medium is purified water. The cooling device 40 includes a water tank 410 and a chiller 420. The water tank 410 is used to store purified water. The inlet of the water tank 410 is connected to the outlet of the return pipe 520, and the outlet of the water tank 410 is connected to the inlet of the cooling pipe 510. The chiller 420 is used to cool the purified water in the water tank 410.

[0071] In this embodiment, water cooling is used to cool the first motor 310. The cooling device 40 includes a water tank 410 and a chiller 420, with the water tank 410 located between the return pipe 520 and the cooling pipe 510. During the operation of the cooling circulation system, low-temperature purified water flows from the water tank 410 to the cooling pipe 510, then passes through the first motor 310, carrying away heat from it. The purified water temperature rises and returns to the water tank 410 through the return pipe 520. During the purified water circulation process, the chiller 420 continuously cools the purified water in the water tank 410. The water tank 410 can be used to store purified water, acting as a buffer when the operating conditions of the cooling circulation system 50 change. In case of leakage, it can quickly replenish purified water, improving the cooling effect of the cooling circulation system 50 on the first motor 310, thereby enhancing the stability and safety of the first motor 310's operation.

[0072] In some embodiments of this utility model, such as Figure 2 As shown, the inlet of water tank 410 is connected to the outlet of return pipe 520, the outlet of water tank 410 is connected to the inlet of chiller 420, and the outlet of chiller 420 is connected to the inlet of cooling pipe 510.

[0073] In this embodiment, the return pipe 520, water tank 410, chiller 420, and cooling pipe 510 are connected in sequence. When the cooling circulation system is running, the chiller 420 lowers the temperature of the purified water. The low-temperature purified water flows to the first motor 310 through the cooling pipe 510, carrying away the heat in the first motor 310. The purified water temperature rises and flows through the return pipe 520 into the water tank 410, and then flows from the water tank 410 to the chiller 420 for cooling.

[0074] In some embodiments of this utility model, such as Figure 2 As shown, the tunnel sterilization dryer also includes a temperature sensor 60 and a control cabinet 70. The temperature sensor 60 is located at the outlet of the water tank 410 and is used to monitor the temperature of the purified water in the water tank 410. The temperature sensor 60 and the chiller 420 are connected to the control cabinet 70. The control cabinet 70 includes a display screen 710 and an operation panel 720. The display screen 710 is used to display the temperature of the purified water in the water tank 410, and the operation panel 720 is used to adjust the cooling temperature of the chiller 420.

[0075] In this embodiment, the tunnel sterilization dryer also includes a temperature sensor 60 and a control cabinet 70. The temperature sensor 60 is located at the outlet of the water tank 410. The temperature sensor 60 is connected to the control cabinet 70, which includes a display screen 710 and an operation panel 720. The temperature sensor 60 detects the temperature of the purified water in the water tank 410 and transmits the data to the control cabinet 70, where it is displayed on the display screen 710. When the temperature of the purified water is outside the preset range, the cooling temperature of the chiller 420 can be adjusted manually on the operation panel 720. Alternatively, the cooling temperature of the chiller 420 can be automatically controlled based on the temperature of the purified water. The purified water carries away the heat from the first motor 310 as it passes through it. When the first motor 310 is generating significant heat, the temperature of the purified water is high, thus raising the temperature of the purified water in the water tank 410 as it flows into the water tank. Therefore, the temperature of the purified water detected by the temperature sensor 60 can indirectly reflect the heating status of the first motor 310. Temperature sensor 60 and control cabinet 70 monitor the temperature of purified water in water tank 410, and adjust the cooling temperature of chiller 420 according to the temperature of purified water in water tank 410, thereby enabling the first motor 310 to operate at the correct temperature, thus improving the stability and safety of the tunnel sterilization dryer.

[0076] In some embodiments of this utility model, such as Figure 2 As shown, the tunnel sterilization dryer also includes a water supply pipe 820 and a water supply valve 830. One end of the water supply pipe 820 is connected to a water source, and the other end is connected to the inlet of the water tank 410 or the inlet of the first motor 310. The water supply valve 830 is installed on the water supply pipe 820 to allow the water supply pipe 820 to be opened or closed.

[0077] In this embodiment, the tunnel sterilization dryer also includes a water supply pipe 820 and a water supply valve 830. The water supply pipe 820 is connected to the inlet of the water tank 410 or the inlet of the first motor 310, and the water supply valve 830 is installed on the water supply pipe 820. When adding water to the water tank 410, the water supply valve 830 is opened manually or automatically, and the water supply valve 830 is closed after the water supply is completed.

[0078] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A tunnel sterilization and drying machine, characterized in that, include: A housing, wherein a drying channel is defined within the housing, the drying channel including a high-temperature sterilization section; The first air supply fan is used to deliver high-temperature airflow to the high-temperature sterilization section. A first motor is connected to the first air blower to provide power to the first air blower; A cooling device configured to cool the first motor, the cooling device containing a cooling medium; A cooling circulation system is provided, comprising a cooling pipe and a return pipe. The outlet of the cooling device is connected to the inlet of the first motor through the cooling pipe, and the inlet of the cooling device is connected to the outlet of the first motor through the return pipe, so that the cooling medium circulates between the cooling device and the first motor.

2. The tunnel sterilization and drying machine according to claim 1, characterized in that, Multiple first air supply fans are provided, and each first motor is configured in a one-to-one correspondence with a first air supply fan; all multiple first motors are connected to the cooling device.

3. The tunnel sterilization and drying machine according to claim 1, characterized in that, The cooling circulation system also includes: A pipe visualization device is installed on the cooling pipe and / or the return pipe.

4. The tunnel sterilization and drying machine according to claim 3, characterized in that, The pipeline visualization device includes a glass pipeline sight glass; The cooling pipe includes a first cooling pipe section and a second cooling pipe section, and the two ends of the glass pipe sight glass are respectively sealed to the first cooling pipe section and the second cooling pipe section; and / or The return pipe includes a first return pipe section and a second return pipe section, and the two ends of the glass pipe sight glass are respectively sealed to the first return pipe section and the second return pipe section.

5. The tunnel sterilization and drying machine according to claim 4, characterized in that, The pipeline visualization device includes a flow rate viewing window.

6. The tunnel sterilization and drying machine according to claim 1, characterized in that, The cooling medium is purified water or air.

7. The tunnel sterilization and drying machine according to claim 6, characterized in that, The cooling medium is purified water; the cooling device includes: Water tank, the water tank being used to store purified water; A refrigeration unit, used to cool the purified water in the water tank; The inlet of the water tank is connected to the outlet of the return pipe, and the outlet of the water tank is connected to the inlet of the cooling pipe; or The inlet of the water tank is connected to the outlet of the return pipe, the outlet of the water tank is connected to the inlet of the chiller, and the outlet of the chiller is connected to the inlet of the cooling pipe.

8. The tunnel sterilization and drying machine according to claim 7, characterized in that, Also includes: A temperature sensor is installed at the outlet of the water tank and is used to monitor the temperature of the purified water in the water tank. A control cabinet is provided, in which the temperature sensor and the chiller are connected. The control cabinet includes a display screen and an operation panel. The display screen is used to display the temperature of the purified water in the water tank, and the operation panel is used to adjust the cooling temperature of the chiller.

9. The tunnel sterilization and drying machine according to claim 8, characterized in that, Also includes: A water supply pipe, one end of which is connected to a water source, and the other end of which is connected to the inlet of the water tank or the inlet of the first motor; A water supply valve is installed on the water supply pipe to allow the water supply pipe to be opened or closed.

10. The tunnel sterilization and drying machine according to claim 1, characterized in that, The drying channel further includes a preheating section and a cooling section, wherein the preheating section, the high-temperature sterilization section, and the cooling section are arranged sequentially. The tunnel sterilization and drying machine also includes: The second air supply fan is used to deliver high-temperature airflow to the preheating section; A third air supply fan is used to deliver low-temperature airflow to the cooling section; The second motor is connected to the second air blower and provides power to the second air blower; The third motor is connected to the third air supply fan and provides power to the third air supply fan; A conveyor belt is disposed at the bottom of the drying channel; An exhaust fan is provided below the conveyor belt. Multiple exhaust fans are provided, and the multiple exhaust fans are respectively provided in the preheating section, the high-temperature sterilization section and the cooling section.

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