Cooling module and oven

Abstract

Provided in the present invention are a cooling module and an oven. The cooling module is internally provided with a cooling chamber, the cooling module is formed with a communicating position for communicating the cooling chamber with the outside, the cooling module is provided with a cold-spot heating device, and the cold-spot heating device is arranged close to the communicating position so as to heat, by means of the cold-spot heating device, an area of the cooling chamber that is close to the communicating position. The cold-spot heating device of the present invention is installed at a cold-spot position on the cooling module, the cold-spot heating device synchronously heats while an original heating element of the cooling module performs sterilization by heating, such that all spots in the whole cooling module are subjected to effective sterilization and depyrogenation, and the temperature in the cooling module can be set to be a standard sterilization temperature, which can reduce energy consumption caused by excessive heating, and can also prevent normal production from being affected by the overheating of medicine bottles and generation of black spots.

Description

Cooling module and oven Cross-references

[0001] This application claims priority to Chinese patent applications filed on April 23, 2024, entitled "Cooling Module and Oven" (application number 202410498243.6) and "Heating Door and Automated Production Equipment" (application number 202420860531.7). Technical Field

[0002] This invention relates to the field of automated production equipment technology, and in particular to a cooling module and an oven. Background Technology

[0003] In automated filling line equipment, especially in tunnel ovens with cooling module sterilization processes, sterilization and pyrogen removal processes cannot guarantee complete sterilization of the sterile area. This results in unsterilized areas, known as cold spots. The sterilization and pyrogen removal effect at these cold spot locations does not meet pharmaceutical standards. In the pharmaceutical field, if the FH (Fahrenheit Hours) value of the sterilized vials does not meet requirements due to cold spots, subsequent production cannot proceed, potentially rendering the entire batch unusable. Existing tunnel oven equipment lacks a design to eliminate sterilization cold spots, leading to frequent questions during equipment acceptance regarding its sterilization requirements and the effectiveness of sterilization and pyrogen removal. To dispel this concern, many pharmaceutical machinery companies use methods such as increasing the sterilization temperature of the cooling module sterilization process to eliminate cold spots, thereby ensuring that all areas are sterilized. However, this method, due to its excessively high temperature, may damage the medicine bottles, causing them to overheat, and even poses a risk of black spots. Furthermore, it increases energy consumption. Summary of the Invention

[0004] The purpose of this invention is to provide a cooling module and an oven, which aims to solve the cold spot problem existing in the current cooling module.

[0005] To solve the above-mentioned technical problems, embodiments of the present invention provide a cooling module, wherein a cooling chamber is provided within the cooling module, a communication position is formed on the cooling module connecting the cooling chamber to the outside, and a cold point heating device is provided on the cooling module, the cold point heating device being positioned close to the communication position, so as to heat the area of ​​the cooling chamber close to the communication position through the cold point heating device.

[0006] The cold point heating device of the present invention is installed at the cold point position of the cooling module. While the original heating element of the cooling module heats and sterilizes, the cold point heating device heats simultaneously, so that all points in the entire cooling module are effectively sterilized and depyrogens are removed. The temperature in the cooling module can be set to the standard sterilization temperature. This not only reduces the energy consumption caused by excessive heating, but also avoids overheating of medicine bottles and the formation of black spots, which would affect normal production.

[0007] To achieve the above objectives, the present invention also provides an oven including the cooling module described above. Attached Figure Description

[0008] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0009] Figure 1 is a schematic diagram of the structure of the drying oven provided in an embodiment of the present invention;

[0010] Figure 2 is a schematic diagram of the airtight door module in Figure 1;

[0011] Figure 3 is a schematic diagram of the internal structure of the airtight door module in Figure 2;

[0012] Figure 4 is a schematic diagram of the cold point heating device in Figure 3;

[0013] Figure 5 is a cross-sectional view of the cold point heating device in Figure 4;

[0014] Figure 6 is a schematic diagram of the structure of the door in Figure 1;

[0015] Figure 7 is a partial structural schematic diagram of the oven in Figure 1;

[0016] Figure 8 is a schematic diagram of the oven in Figure 1;

[0017] Figure 9 is a magnified view of part A in Figure 8;

[0018] Figure 10 is a schematic diagram of the structure of a proximity sensor in Figure 8;

[0019] Figure 11 is a schematic diagram of another proximity sensor in Figure 8;

[0020] Figure 12 is a schematic diagram of the lifting gate in Figure 1;

[0021] Figure 13 is a schematic diagram of the joint between the lifting gate and the gate drive shaft in Figure 12;

[0022] Figure 14 is a cross-sectional view of the connection between the lifting gate and the gate drive shaft in Figure 12;

[0023] Figure 15 is a schematic diagram of the fixed flange in Figure 12;

[0024] Figure 16 is a schematic diagram of the transition flange in Figure 12;

[0025] Figure 17 is a schematic diagram of the conveying device in Figure 1;

[0026] Figure 18 is a structural schematic diagram of the mesh belt forward rotation drive module in Figure 1;

[0027] Figure 19 is a schematic diagram of the structure of the mesh belt reverse drive module in Figure 1;

[0028] Figure 20 is a schematic diagram of the assembled structure of the mesh belt and bottle pusher in Figure 19;

[0029] Figure 21 is a magnified view of part B in Figure 20;

[0030] Figure 22 is a schematic diagram of the bottle pusher device in Figure 20;

[0031] Figure 23 is a magnified view of a portion of point C in Figure 22;

[0032] Figure 24 is a structural schematic diagram of the bottle-pushing device in Figure 22 from another perspective;

[0033] Figure 25 is a schematic diagram of the spray device of the oven in Figure 1;

[0034] Figure 26 is a schematic diagram of the structure at the injection pipe in Figure 25;

[0035] Figure 27 is a magnified view of a portion of point E in Figure 26;

[0036] Figure 28 is a magnified view of part F in Figure 26;

[0037] Figure 29 is a cross-sectional view of the oven in Figure 1;

[0038] Figure 30 is another sectional view of the oven in Figure 1;

[0039] Figure 31 is a schematic diagram of the flow guide in Figure 29;

[0040] Figure 32 is a schematic diagram of the static pressure box in Figure 29;

[0041] Figure 33 is a structural schematic diagram of the static pressure box in Figure 32 from another perspective;

[0042] Figure 34 is a cross-sectional view of the static pressure box in Figure 32;

[0043] Figure 35 is another sectional view of the static pressure box in Figure 32;

[0044] Figure 36 is a schematic diagram of the structure of the flow guide mesh inclined plate and flow guide mesh flat plate in Figure 32;

[0045] Figure 37 is a schematic diagram of the return air device in Figure 29;

[0046] Figure 38 is a cross-sectional view of the return air device in Figure 37;

[0047] Figure 39 is one of the structural schematic diagrams of the baffle in Figure 37, in which the baffle is in a vertical state;

[0048] Figure 40 is one of the structural schematic diagrams of the baffle in Figure 37, in which the baffle is in a horizontal state.

[0049] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0051] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), these directional indications are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. Furthermore, if the embodiments of the present invention involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0052] This invention provides a cooling module that can be used in automated production equipment such as ovens. The following description will take the use of the cooling module in an oven as an example. Figures 1 to 40 show a preferred embodiment of the oven provided by this invention.

[0053] Please refer to Figures 1 and 8. In this embodiment, a cooling chamber 153 is provided inside the cooling module 150. A communication position is formed on the cooling module 150 that connects the cooling chamber 153 to the outside. A cold point heating device 510 is provided on the cooling module 150. The cold point heating device 510 is positioned close to the communication position so as to heat the area of ​​the cooling chamber 153 close to the communication position.

[0054] Specifically, the oven 1000 includes a preheating module 130, a heating module 140, and a cooling module 150 connected sequentially. A conveying device 300 is installed inside the oven 1000 to convey bottles sequentially through the preheating module 130, the heating module 140, and the cooling module 150. The cold point of the cooling module 150 is typically located at the connection point between the cooling chamber 153 and the outside. A cold point heating device 510 is installed near this connection point to specifically sterilize and remove pyrogens from the cold point, ensuring that the temperature at the cold point reaches the optimal sterilization temperature during the sterilization process.

[0055] A communication position is formed on the cooling module 150. The specific arrangement of this communication position on the cooling module 150 is not particularly limited; for example, it can be a conveying channel or an opening. Optionally, referring to Figures 1 and 8, in this embodiment, a module outlet 154 is provided on the housing of the cooling module 150 at the communication position to connect the cooling chamber 153 to the outside. The module outlet 154 is provided on the side wall of the cooling module 150 away from the heating module 140, corresponding to the conveying device 300, thus forming a communication position on the cooling module 150. The following description uses the cooling module 150 with a module outlet 154 as an example.

[0056] The cold point heating device 510 is located near the module outlet 154. The cold point heating device 510 can be located inside the module outlet 154; it can also be located on the side of the module outlet 154 away from the cooling chamber 153; or it can be located on the side of the module outlet 154 near the cooling chamber 153. Optionally, referring to Figures 2, 3, and 8, in this embodiment, the cold point heating device 510 is arranged in a door shape and can be movably located at the module outlet 154 to open and close the module outlet 154. Specifically, the cold point heating device 510 is a heating door, and it can move relative to the housing of the cooling module 150, allowing the module outlet 154 to be opened and closed by moving the cold point heating device 510. After the active cold point heating device 510 closes the module outlet 154, it can heat the cold point position of the cooling chamber 153. After the active cold point heating device 510 opens the module outlet 154, the conveying device 300 can convey the bottle through the module outlet 154. The movement mode of the active cold point heating device 510 can be set according to the actual situation. For example, the active cold point heating device 510 can be rotated along the vertical axis or the horizontal axis; the active cold point heating device 510 can also be slidable along the vertical axis or the horizontal axis.

[0057] Optionally, referring to Figures 1 to 3, in this embodiment, an airtight door module 500 is provided at the module outlet 154. The airtight door module 500 includes an airtight door for opening and closing the module outlet 154. Specifically, an airtight door module 500 is usually provided at the module outlet 154 to ensure the sealing of the module outlet 154. When the cold point heating device 510 is a heating door, the airtight door of the airtight door module 500 and the cold point heating device 510 can be two separate doors. For example, the cold point heating device 510 is located on the side of the airtight door closer to the cooling chamber 153; the airtight door of the airtight door module 500 and the cold point heating device 510 can also be the same door, i.e., the cold point heating device 510 is an airtight door. For example, referring to Figures 1 to 3, in this embodiment, the cold point heating device 510 is an airtight door, and the following will describe the case of the cold point heating device 510 being an airtight door.

[0058] Further, referring to Figures 1 to 3, in this embodiment, the airtight door module 500 also includes an airtight frame 530 and a door drive mechanism 520. The airtight frame 530 is disposed on the housing of the cooling module 150, and the airtight door is movably disposed on the airtight frame 530. The door drive mechanism 520 is dynamically coupled to the airtight door to drive the airtight door to move. Specifically, the airtight frame 530 is typically disposed on the outside of the housing of the cooling module 150, and the door drive mechanism 520 drives the cold point heating device 510 to open and close the module outlet 154. The cold point heating device 510 typically moves in a lifting manner. For example, in this embodiment, the cold point heating device 510 is connected to a guide rail 540 fixed on an airtight frame 530, and the drive end of the door drive mechanism 520 is connected to the cold point heating device mounting block 518 on the cold point heating device 510, thereby enabling the cold point heating device 510 to move up and down on the airtight frame 530 via the door drive mechanism 520. The controller of the oven 1000 is electrically connected to the door drive mechanism 520 and the cold point heating device 510. During the sterilization process of the cooling module 150, the controller of the oven 1000 (e.g., a PLC) drives the cold point heating device 510 to descend via the door drive mechanism 520, so that the cold point heating device 510 covers the outlet of the cooling module 150. The controller of the oven 1000 then controls the cold point heating device 510 to start heating.

[0059] Optionally, referring to Figure 8, in this embodiment, a chamber heating device 155 is provided on the cooling module 150. The chamber heating device 155 is used to heat the cooling chamber 153. The chamber heating device 155 and the communicating position are respectively located on two adjacent side walls of the housing of the cooling module 150. The chamber heating device 155 is usually the original heating element of the cooling module 150, and the chamber heating device 155 is mainly used to heat the entire cooling chamber 153. The cold point heating device 510 is located on the side wall of the housing of the cooling module 150 away from the heating module 140, while the chamber heating device 155 is usually located on one side wall of the housing of the cooling module 150 in the width direction of the conveying device 300. The chamber heating device 155 can also be a movable heating door.

[0060] The cold point heating device 510 of the present invention is installed at the cold point position of the cooling module 150. While the original heating element of the cooling module 150 is heating and sterilizing, the cold point heating device 510 heats simultaneously, so that all points in the entire cooling module 150 are effectively sterilized and depyrogens are removed. The temperature in the cooling module 150 can be set to the standard sterilization temperature. This not only reduces the energy consumption caused by excessive heating, but also avoids overheating of medicine bottles and the formation of black spots, which would affect normal production.

[0061] When the cold point heating device 510 is a heated door, its specific configuration can be set according to actual conditions. For example, the cold point heating device 510 includes a door body and a heater. The door body is located at the module outlet 154, and the heater is located on the door body. The specific style of the heater can be set according to actual conditions. For example, the heater can be a heating rod, heating tube, heating wire, or heating plate. Optionally, referring to Figures 4 and 5, in this embodiment, the heater is a heating plate 517. The following description will use a heating plate 517 as an example. The heating plate 517 is located on the door body. The heating plate 517 can be located inside the door body or outside the door body. The door body can protect the heating plate 517. The door body is usually made of materials with good thermal conductivity, such as stainless steel, and the door body is usually filled with insulation materials such as insulation cotton. The specific style of the door body is not particularly limited. Optionally, please refer to Figures 4 and 5. In this embodiment, the door body includes a heated door body 511 and a cover plate 514. The heated door body 511 has an installation groove 512 on its surface near the cooling chamber 153. The cover plate 514 is located on the side of the heated door body 511 near the cooling chamber 153 and is disposed in a sealing manner at the opening of the installation groove 512. The heating plate 517 is located in the installation groove 512.

[0062] Specifically, the cold point heating device 510 includes a heating plate 517. The heating plate 517 specifically targets the cold point of the cooling module 150 for sterilization and pyrogen removal, ensuring that the temperature at the cold point reaches the optimal sterilization temperature during the sterilization process, thus achieving the required sterilization and pyrogen removal effect. The heating plate 517 can be mounted on the heating door 511 or the cover plate 514, and is typically positioned near the heating chamber of the cold point heating device 510. For example, referring to Figures 4 and 5, in this embodiment, the heating plate 517 is fitted snugly onto the cover plate 514. The cover plate 514 on the cold point heating device 510, with the heating plate 517 tightly mounted on it, increases the heating area of ​​the heating plate 517. Furthermore, the cover plate 514 encapsulates the heating plate 517 within the heating door 511, preventing damage to the heating plate 517. The cold point heating device 510 also features a simple structural design and is easy to install. The heating door 511 is typically filled with insulation materials such as insulation cotton. This insulation material is inserted before the heating door 511 is welded and sealed to prevent heat loss from the oven 1000 during sterilization, thus achieving a heat insulation effect. The specific arrangement of the mounting groove 512 on the heating door 511 can be set according to actual conditions. Optionally, referring to Figures 4 and 5, in this embodiment, the shell wall of the heating door 511 near the cover plate 514 is partially recessed inward to form the mounting groove 512. The heating door 511 is a U-shaped part, and a cold point heating device mounting block 518 is fixedly mounted on the heating door 511 by welding or other methods. The cold point heating device 510 is connected to the door drive mechanism 520 through the cold point heating device mounting block 518.

[0063] Optionally, in this embodiment, a second temperature sensor is provided on the heating plate 517. The second temperature sensor can be a PT100 temperature probe, etc. The heating plate 517 has a built-in second temperature sensor, which can monitor the temperature of the heating plate 517 in real time. The second temperature sensor detects the temperature of the heating plate 517 in real time and feeds it back to the controller of the oven 1000. When the heating plate 517 malfunctions, it can provide timely feedback.

[0064] Optionally, referring to Figures 4 and 5, in this embodiment, a sleeve 513 is provided inside the heating door body 511. The heating door body 511 is provided with a sleeve 513 for passing through the cable of the heating plate 517 and the cable of the second temperature sensor. After passing through the sleeve 513, the cable of the heating plate 517 and the cable of the second temperature sensor are sealed and fixed by the cable fixing connector, and then connected to the controller of the oven 1000.

[0065] The cover plate 514 and the heating door body 511 are typically detachably connected. Optionally, referring to Figures 4 and 5, in this embodiment, a cover plate mounting stud 515 is provided on the surface of the cover plate 514 near the heating door body 511. The cover plate mounting stud 515 passes through the heating door body 511, and a cover plate mounting nut is installed on the cover plate mounting stud 515. The cover plate mounting nut is located on the side of the heating door body 511 away from the cover plate 514. The detachable connection between the cover plate 514 and the heating door body 511 is achieved through the cover plate mounting stud 515. Multiple cover plate mounting studs 515 are typically arranged at intervals along the circumference of the cover plate 514, and are arranged around the periphery of the cover plate 514. The entire cold point heating device 510 appears as a single unit from the outside; the internal structure of the cold point heating device 510 can be seen after removing the cover plate 514.

[0066] The heated door body 511 has multiple bolt mounting holes corresponding to the cover plate mounting studs 515. These bolt mounting holes can be located outside or inside the mounting groove 512. Optionally, referring to Figures 4 and 5, in this embodiment, the cover plate mounting studs 515 are located outside the mounting groove 512, meaning the multiple bolt mounting holes on the heated door body 511 are located outside the mounting groove 512.

[0067] The cover plate 514 and the heating plate 517 are typically detachably connected. Optionally, referring to Figures 4 and 5, in this embodiment, a heating plate mounting stud 516 is provided on the surface of the cover plate 514 near the heating plate 517. The heating plate mounting stud 516 passes through the heating plate 517, and a heating plate mounting nut is installed on the heating plate mounting stud 516. The heating plate mounting nut is located on the side of the heating plate 517 away from the cover plate 514. The cover plate 514 and the heating plate 517 are detachably connected by the heating plate mounting stud 516. Multiple heating plate mounting studs 516 are typically spaced apart along the circumference of the cover plate 514. The heating plate 517 is made of a high-temperature plate, and a high-temperature resistant cable is wound inside the heating plate 517. Multiple bolt mounting holes are pre-drilled on the heating plate 517 corresponding to the heating plate mounting studs 516. Multiple cover plate mounting studs 515 and multiple heating plate mounting studs 516 are fixedly installed on the cover plate 514 by means of spot welding, etc. The heating plate 517 is fixed on the cover plate 514 by multiple heating plate mounting studs 516 to form an integral part with the cover plate 514. After the heating plate 517 and the cover plate 514 are installed, they are installed together on the heating door body 511 by multiple cover plate mounting studs 515.

[0068] Optionally, in this embodiment, a first temperature sensor is provided on the cooling module 150. The first temperature sensor is used to detect the temperature of the area near the communication position in the cooling chamber 153. A first temperature sensor is also provided at the cold spot location of the cooling module 150. During the sterilization process of the cooling module 150, the temperature at the cold spot location can be detected in real time by the first temperature sensor. The probe end of the first temperature sensor can be fixed to the housing of the cooling module 150 by a fixed connection structure such as a threaded connection structure. The probe end of the first temperature sensor extends into the cooling module 150 and is located at the cold spot location of the cooling module 150.

[0069] During the sterilization process in the cooling module 150, the heating temperature is controlled by a controller. A second temperature sensor detects the temperature of the heating plate 517 in real time and feeds it back to the controller. This allows for timely feedback in case of a malfunction in the heating plate 517. A first temperature sensor installed on the cooling module 150 feeds back the temperature at the cold spot to the controller in real time. Heating stops when the set temperature is reached; if the temperature is lower than the set temperature, heating continues until the set temperature is reached. The set temperature is typically slightly higher than the sterilization temperature to ensure that the sterilization and pyrogen removal effects meet the requirements.

[0070] The present invention also provides an oven including a cooling module. Since the cooling module adopts the technical solution of the above embodiments, it has the beneficial effects brought about by the technical solution of the above embodiments. Figures 1 to 40 show a preferred embodiment of the oven provided by the present invention.

[0071] Please refer to Figures 1 to 3. In this embodiment, the oven 1000 includes a preheating module 130, a heating module 140, and a cooling module 150 connected in sequence. A conveying device 300 is provided inside the oven 1000. The conveying device 300 is used to convey the bottle body through the preheating module 130, the heating module 140, and the cooling module 150 in sequence.

[0072] Optionally, referring to Figures 1 and 6, in this embodiment, the oven 1000 has an opening on its body 100, and an insulation door 600 is installed on the opening. The insulation door 600 includes a first door 610, a second door 620, and a heat insulation pad 630. The first door 610 is located outside the body 100 and is closedly disposed at the opening. The second door 620 enters the body 100 through the opening. The heat insulation pad 630 is spaced between the first door 610 and the second door 620.

[0073] Specifically, the oven 100 has an opening in its wall, which connects the inside and outside of the oven 100. During normal operation of the oven 1000, the area outside the oven 100 is a low-temperature zone, while the area inside is a high-temperature zone. The overall insulating door 600 consists of a first door 610 and a second door 620. The first door 610 is located outside the oven 100, in the low-temperature zone, and completely covers the opening of the oven 100. The second door 620 can enter the oven 100 through the opening, and is located inside the oven 100 in the high-temperature zone.

[0074] Heat insulation pads 630 are spaced apart between the first door 610 and the second door 620, preventing them from contacting each other. This effectively isolates the second door 620 (located in a high-temperature area) from the first door 610 (located in a low-temperature area), thereby effectively reducing the surface temperature of the enclosure 100, minimizing heat transfer and loss. Furthermore, the effective isolation of heat from the high-temperature area significantly reduces the risk of burns to operators, making the working environment safer. The heat insulation pads 630 can be made of heat-insulating cotton or fireproof blankets, and the specific installation method of the heat insulation pads 630 will be described in more detail below.

[0075] The first door body 610 is typically a closed metal door panel such as a stainless steel door panel, and its interior is filled with sufficient thermal insulation material such as insulating cotton. Optionally, referring to Figure 6, in this embodiment, the first door body 610 is filled with a first insulation layer 612. The first door body 610 is an independent, closed component, and its interior is filled with sufficient thermal insulation material such as insulating cotton to form the first insulation layer 612, thereby giving the first door body 610 a better thermal insulation effect.

[0076] Similarly, the second door 620 is typically a closed metal door panel such as a stainless steel door panel, and its interior is filled with sufficient thermal insulation material such as insulating cotton. Optionally, referring to Figure 6, in this embodiment, a second insulation layer 621 is filled inside the second door 620. The first insulation layer 612 and the second insulation layer 621 can be made of cotton-like fiberglass wool, which can be formed into any shape as needed, making it easy to insert into the first door 610 and the second door 620 and manually press it in. The shape of the heat insulation pad 630 is also usually adapted to the shape of the second door 620, and the area and size of the heat insulation pad 630 and the second door 620 can be set according to the actual situation. Optionally, referring to Figure 6, in this embodiment, the area and size of the heat insulation pad 630 are equal to the area and size of the second door 620. In this way, the heat insulation pad 630 can completely cover the surface of the second door 620 near the first door 610, so that the heat insulation pad 630 can completely and effectively isolate the second door 620 in the high temperature area and the first door 610 in the low temperature area.

[0077] Optionally, referring to Figure 6, in this embodiment, the insulated door 600 further includes a fixing member 640, which is disposed between the first door body 610 and the second door body 620 to limit the deformation of the heat insulation pad 630 in the direction from the second door body 620 to the first door body 610. The heat insulation pad 630 is clamped and fixed between the first door body 610 and the second door body 620. The fixing member 640 can limit the distance between the first door body 610 and the second door body 620, thereby protecting the heat insulation pad 630 and preventing the heat insulation pad 630 from being squeezed out, deformed, or damaged.

[0078] Optionally, referring to Figure 6, in this embodiment, a gap is provided between the fastener 640 and the second door 620. The thickness of the fastener 640 is its dimension in the direction from the second door 620 to the first door 610. The thickness of the fastener 640 is less than the distance between the first door 610 and the second door 620, thereby allowing a gap to be provided between the fastener 640 and the second door 620. This prevents heat from the second door 620 from being transferred to the first door 610 through the fastener 640. Furthermore, the gap between the fastener 640 and the second door 620 is less than the minimum gap required for the heat insulation pad 630 to be extruded, deformed, or damaged.

[0079] Optionally, referring to Figure 6, in this embodiment, a receiving hole 631 is provided through the surface of the heat insulation pad 630 near the second door 620, corresponding to the fixing member 640, and the fixing member 640 is located within the receiving hole 631. The shape of the fixing member 640 is usually adapted to the shape of the receiving hole 631. The fixing member 640 is installed in the receiving hole 631 of the second door 620, thereby embedding the fixing member 640 on the heat insulation pad 630, and together they are installed between the first door 610 and the second door 620. This enables the fixing member 640 to be installed and positioned between the first door 610 and the second door 620. For example, the heat insulation pad 630 is a flat plate of aerogel glass fiber cotton with a certain degree of hardness. The outer dimensions of the heat insulation pad 630 are consistent with the outer dimensions of the second door 620, and the heat insulation pad 630 is provided with a receiving hole 631 for installing the fixing member 640.

[0080] Further, referring to Figure 6, in this embodiment, a first screw connector 650 is installed on the second door body 620 corresponding to the fixing member 640. The fixing member 640 is a fixing ring fitted onto the first screw connector 650. The tail of the first screw connector 650 passes through the second door body 620 and the fixing member 640 in sequence and is threadedly connected to the first door body 610. The first door body 610, the second door body 620, and the heat insulation pad 630 are locked and fixed together by the first screw connector 650. The fixing member 640 is added between the first door body 610 and the second door body 620. Depending on the different tightening pressure of the first screw connector 650, the gap between the fixing member 640 and the second door body 620 is less than the minimum gap at which the heat insulation pad 630 is squeezed out and deformed under the pressure. The fixing member 640 protects the heat insulation pad 630 and also limits the tightening of the first screw connector 650, preventing damage to the heat insulation pad 630 due to overtightening of the first screw connector 650.

[0081] When the door panel of the insulation door 600 has a large area, the weight of the entire insulation door 600 after inserting insulation material will be significant, making it difficult for one person to disassemble and assemble, extremely inconvenient to operate, and highly unsafe for the operator. The first door body 610, the second door body 620, and the insulation pad 630 are detachably connected by the first screw connector 650, allowing the entire insulation door 600 structure to be disassembled into a modular assembly structure. The insulation door 600 can be disassembled during installation and removal, making it more convenient.

[0082] Optionally, referring to Figure 6, in this embodiment, a handle 613 is installed on the surface of the first door 610 away from the second door 620. By providing the handle 613 on the first door 610, it facilitates the operator's disassembly and assembly of the door insulation 600. The handle 613 is installed before the first door 610 is bent and sealed, and is welded on the inside to ensure its firmness. The handle 613 can be a foldable structure, etc., and the mounting end of the handle 613 has a built-in thread, which is locked to the outer surface of the first door 610 with a built-in nut.

[0083] When the heat insulation pad 630 is a fire blanket, since the fire blanket will not experience crystal displacement due to external pressure, a fixing member 640 can be provided or not provided between the first door body 610 and the second door body 620, depending on the actual situation. Optionally, in this embodiment, a first screw connector 650 is installed on the surface of the second door body 620 away from the first door body 610. The tail of the first screw connector 650 passes through the second door body 620 and the heat insulation pad 630 in sequence before being threadedly connected to the first door body 610. That is, no fixing member 640 is provided at the location of the heat insulation pad 630 corresponding to the first screw connector 650, and the first screw connector 650 directly passes through the heat insulation pad 630.

[0084] The first door body 610 is provided with a threaded hole corresponding to the first screw connector 650. The specific arrangement of the threaded hole on the first door body 610 can be set according to the actual situation. Optionally, referring to Figure 6, in this embodiment, a screw sleeve 611 is provided on the inner surface of the shell wall of the first door body 610 near the second door body 620 corresponding to the first screw connector 650, so that the first door body 610 is threadedly connected to the first screw connector 650 through the screw sleeve 611. The screw sleeve 611 is embedded in the first door body 610. The screw sleeve 611 is installed and welded before the first door body 610 is bent and sealed, so that it is threadedly connected to the first screw connector 650 through the screw sleeve 611.

[0085] Further, referring to Figure 6, in this embodiment, the first insulation layer 612 covers the threaded sleeve 611. The threaded sleeve 611 is embedded in the first insulation layer 612, and the threaded sleeve 611 is surrounded by insulation material. After the heat is transferred to the threaded sleeve 611 through the first screw connector 650, it will be isolated by the first insulation layer 612 inside the first door body 610 and will not be transferred to the outer surface of the first door body 610.

[0086] Optionally, referring to Figure 6, in this embodiment, a sealing gasket 680 is provided on the surface of the first door 610 near the second door 620, and the sealing gasket 680 is sandwiched between the first door 610 and the outer wall of the housing 100. The first door 610 and the outer wall of the housing 100 are fixedly connected by bolts, and the sealing gasket 680 is made of high-temperature resistant silicone rubber, and the sealing gasket 680 is provided with bolt mounting holes for bolts to pass through.

[0087] Optionally, referring to Figure 1, in this embodiment, the preheating module 130, the heating module 140, and the cooling module 150 are all equipped with insulation doors 600. For example, the heating module 140 is provided with a housing opening for replacing the high-efficiency filter, and the insulation door 600 is installed at the housing opening.

[0088] Optionally, referring to Figures 1, 7, and 8, in this embodiment, the preheating module 130 is provided with a recovered air inlet 131; the cooling module 150 is provided with a cooling module exhaust outlet 151, so that the clean air in the cooling module 150 is discharged from the cooling module exhaust outlet 151; the oven 1000 also includes a clean air recovery pipe 110, the two ends of which are connected to the recovered air inlet 131 and the cooling module exhaust outlet 151, so that the clean air discharged from the cooling module 150 enters the preheating module 130 from the recovered air inlet 131 after passing through the clean air recovery pipe 110.

[0089] Specifically, a preheating chamber is formed within the preheating module 130, and the air inlet 131 is connected to the preheating chamber. A cooling chamber 153 is formed within the cooling module 150, and an exhaust duct is provided on the cooling module 150. The exhaust duct of the cooling module 150 is connected to the cooling chamber 153, so that the air inside the cooling module 150 can be discharged to the outside through the exhaust duct. The exhaust duct of the cooling module 150 is provided with a cooling module exhaust port 151, so that the air inside the cooling module 150 can be discharged to the outside through the cooling module exhaust port 151 after passing through the exhaust duct.

[0090] The clean air recovery duct 110 connects to the cooling module exhaust port 151 of the cooling module 150 and the preheating module 130 recovery air inlet 131 at both ends. Air discharged from the cooling module exhaust port 151 in the cooling module 150 can pass through the clean air recovery duct 110 and enter the preheating module 130 through the recovery air inlet 131. Since the air discharged from the cooling module 150 is the air after cooling the bottle and meets the cleanliness requirements, direct discharge would be wasteful to some extent. The oven 100 recovers all the clean air discharged from the cooling module 150 and supplies it to the recovery air inlet 131 of the preheating module 130. This reduces the amount of air the preheating module 130 draws from the cleanroom, which is beneficial for stabilizing the pressure difference in the room and equipment, reducing energy loss, lowering equipment operating costs, and reducing external exhaust.

[0091] Since the exhaust duct of the cooling module 150 is no longer connected to the exhaust system of the cleanroom, all the clean air discharged from the cooling module 150 is recovered and reused by the preheating module 130 through the clean air recovery duct 110. Optionally, in this embodiment, an airflow regulating valve is provided on the clean air recovery duct 110. The airflow regulating valve can control the exhaust volume of the cooling module 150, thereby ensuring the pressure differential balance inside the equipment.

[0092] Optionally, referring to Figures 1 and 7, in this embodiment, the preheating module 130 is provided with a cleanroom air inlet, allowing air from the cleanroom to enter the preheating module 130 from the cleanroom air inlet. The recovery air inlet 131 is connected to the cleanroom air inlet. The preheating module 130 is provided with an exhaust device, which connects the cleanroom air inlet and the preheating chamber. When the exhaust device is working, a negative pressure is formed in the preheating chamber, allowing air from the cleanroom to enter the preheating module 130 from the cleanroom air inlet.

[0093] Optionally, referring to Figures 1 and 7, in this embodiment, the cleanroom air inlet is located on the top surface of the preheating module 130, and a fan hood 132 is provided on the top surface of the preheating module 130, covering the upper side of the cleanroom air inlet. A recovery air inlet 131 is located on the fan hood 132. The fan hood 132 guides the airflow, facilitating air entry into the preheating module 130 from the cleanroom air inlet. The recovery air inlet 131 can be fixed to the fan hood 132 by welding or other methods.

[0094] Further, referring to Figures 1 and 7, in this embodiment, the recovered air inlet 131 is disposed on the side wall of the shroud 132 near the cooling module 150. The recovered air inlet 131 is disposed on the side wall of the shroud 132 facing the cooling module 150, and the recovered air inlet 131 is oriented horizontally and towards the cooling module 150, which facilitates the connection between the clean air recovery pipe 110 and the recovered air inlet 131.

[0095] Optionally, referring to Figures 1 and 7, in this embodiment, a cooling module exhaust pipe 152 is provided on the cooling module 150. The lower end of the cooling module exhaust pipe 152 is connected to the bottom of the cooling module 150, and the upper end of the cooling module exhaust pipe 152 protrudes upward from the cooling module 150. The cooling module exhaust port 151 is provided at the upper end of the cooling module exhaust pipe 152.

[0096] Optionally, referring to Figures 1 and 7, in this embodiment, the clean air recovery duct 110 includes an air recovery channel 111 and a recovery channel adapter 112. One end of the air recovery channel 111 is connected to the recovered air inlet 131, and the other end of the air recovery channel 111 is connected to one end of the recovery channel adapter 112. The other end of the recovery channel adapter 112 is connected to the cooling module exhaust outlet 151. The air recovery channel 111 is typically a metal corrugated flexible hose, for example, a stainless steel corrugated flexible hose. Utilizing the flexibility and bending capability of the metal corrugated flexible hose, it is convenient to connect the recovered air inlet 131 to the cooling module exhaust outlet 151 through the clean air recovery duct 110.

[0097] Optionally, referring to Figures 1 and 7, in this embodiment, a first flange structure 113 is provided between the recycling channel adapter 112 and the cooling module exhaust port 151, so that the recycling channel adapter 112 and the cooling module exhaust port 151 can be connected through the first flange structure 113.

[0098] Optionally, referring to Figures 1 and 7, in this embodiment, a second flange structure 114 is provided between the air recovery channel 111 and the recovery channel transfer pipe 112, so that the air recovery channel 111 and the recovery channel transfer pipe 112 can be connected through the second flange structure 114.

[0099] Optionally, referring to Figures 1 and 7, in this embodiment, a third flange structure 115 is provided between the recovered air inlet 131 and the air recovery channel 111 so that the recovered air inlet 131 and the air recovery channel 111 can be connected through the third flange structure 115.

[0100] During normal operation of the oven 1000, the clean air discharged from the cooling module exhaust pipe 152 is recycled by the preheating module 130 through the recycling channel transfer pipe 112 and the air recycling channel 111. At the same time, the preheating module 130 draws fresh air from the clean room air inlet. Since part of the air volume required by the preheating module 130 has been provided by the clean air discharged from the cooling module 150, the amount of air drawn from the clean room will be reduced, which is more conducive to the stability of the pressure difference in the clean room and the equipment.

[0101] Optionally, referring to Figures 1, 8, and 9, in this embodiment, gate lifting devices 700 are provided between the preheating module 130 and the heating module 140, between the heating module 140 and the cooling module 150, and at the outlet of the cooling module 150. The gate lifting device 700 includes a frame 710, a lifting gate 720, and a proximity sensor 730. An interval structure 711 is mounted on the frame 710, and a conveying channel 712 is provided on the interval structure 711 corresponding to the conveying device 300, so that the conveying device 300... The object to be tested can pass through the interval structure 711 from the conveying channel 712; the lifting gate 720 is installed on the frame 710 and is used to open and close the conveying channel 712; the proximity sensor 730 is installed on the frame 710 and is located on the entrance side of the lifting gate 720. The proximity sensor 730 is used to detect the object to be tested on the conveying device 300. The proximity sensor 730 is electrically connected to the lifting gate 720 so that the lifting gate 720 can be driven to open the conveying channel 712 according to the proximity sensor 730.

[0102] Specifically, the following description will take the gate lifting device 700 located between the preheating module 130 and the heating module 140 as an example. The frame 710 is typically mounted on the housing 100. Spacing structures 711 on the frame 710 are spaced apart between the preheating module 130 and the heating module 140. A conveying channel 712 passes through the spacing structures 711 in the conveying direction of the conveying device 300. Objects placed on the conveyor belt of the conveying device 300 (such as bottles, bottle-blocking blocks, and bottle-pushing blocks) can pass through the spacing structures 711 from the conveying channel 712 and enter the heating module 140 from the preheating module 130. The conveying direction of the conveying device 300 is typically horizontal, and the conveying channel 712 is usually located above the conveyor belt of the conveying device 300.

[0103] The lifting gate 720 typically includes a gate and a gate drive mechanism. The gate drive mechanism is dynamically coupled to the gate so that it can drive the gate to rise and fall. The gate's rising and falling direction is typically up and down. When the gate drive mechanism drives the gate to fall, the gate closes the conveyor channel 712 on the partition structure 711, forming a barrier between the preheating module 130 and the heating module 140, preventing objects placed on the conveyor belt from passing through the partition structure 711 via the conveyor channel 712. When the gate drive mechanism drives the gate to rise, the gate opens the conveyor channel 712 on the partition structure 711, connecting the preheating module 130 and the heating module 140, allowing objects placed on the conveyor belt to pass through the partition structure 711 via the conveyor channel 712 and enter the heating module 140 from within the preheating module 130.

[0104] The proximity sensor 730 is located on the entrance side of the lifting gate 720, that is, the proximity sensor 730 is located inside the preheating module 130. The proximity sensor 730 is used to detect the object to be detected on the conveyor 300. The object to be detected can be a bottle, a bottle blocking block, or a bottle pushing block placed on the mesh belt. The following will take the bottle blocking block and the bottle pushing block as examples of the objects to be detected.

[0105] During the operation of the oven 1000, the proximity sensor 730 can accurately detect the bottle-blocking blocks and bottle-pushing blocks before they reach the lifting gate 720, providing timely feedback on their movement positions on the conveyor belt. Since the proximity sensor 730 is electrically connected to the lifting gate 720, it transmits the detected signal to the gate, causing the gate drive mechanism to lift the gate. This allows the bottles, bottle-blocking blocks, or bottle-pushing blocks to pass through the lifting gate 720 promptly, preventing collisions and damage caused by the gate not lifting in time. The proximity sensor 730 enables actual physical judgment; its actual installation position is close to the lifting gate 720, unlike existing logical judgments, allowing for a better determination of the opening time of the lifting gate 720.

[0106] To prevent the proximity sensor 730 from being damaged by the high temperature inside the heating module 140, the proximity sensor 730 needs to be able to withstand high temperatures. Optionally, referring to Figures 8, 10, and 11, in this embodiment, the proximity sensor 730 is a proximity switch or a through-beam fiber optic sensor. The proximity switch can withstand a temperature of 120 degrees Celsius, while the through-beam fiber optic sensor can withstand a temperature of 350 degrees Celsius. When the gate lifting device 700 is located between the preheating module 130 and the heating module 140, the proximity sensor 730 is located inside the preheating module 130. The proximity sensor 730 is either a proximity switch or a through-beam fiber optic sensor, which can prevent the high temperature overflow from the heating module 140 from damaging the proximity sensor 730. When the gate lifting device 700 is located between the heating module 140 and the cooling module 150, the proximity sensor 730 is located inside the heating module 140. The proximity sensor 730 is a through-beam fiber optic sensor, which can prevent the high temperature of the heating sterilization process inside the heating module 140 from damaging the proximity sensor 730. When the gate lifting device 700 is located at the outlet of the cooling module 150, the proximity sensor 730 is located inside the cooling module 150. The proximity sensor 730 is a through-beam fiber optic sensor, which can prevent the high temperature of the heating sterilization inside the cooling module 150 from damaging the proximity sensor 730.

[0107] Depending on the location of the proximity sensor 730, two types of sensors were selected: a proximity switch and a through-beam fiber optic sensor. This ensures that the proximity sensor 730 can withstand temperatures far exceeding the actual temperatures during production, guaranteeing its normal operation even under extreme conditions. Furthermore, after the lifting gate 720 is raised, the high-temperature overflow within the heating module 140 will not damage the proximity sensor 730, thus preventing the risk of the lifting gate 720 malfunctioning.

[0108] Optionally, referring to Figures 8 to 10, in this embodiment, the proximity sensor 730 is installed on both sides of the conveying channel 712 in the width direction of the conveying device 300. When the proximity sensor 730 is a through-beam fiber optic sensor, the transmitter and receiver of the through-beam fiber optic sensor are respectively installed on both sides of the conveying device 300 in the width direction. When the proximity sensor 730 is a proximity switch, the proximity sensor 730 can be installed on only one side of the conveying device 300, or the proximity sensor 730 can be installed on both sides of the conveying device 300.

[0109] Optionally, referring to Figures 9 to 11, in this embodiment, a mounting base 740 is installed on the frame 710, and the proximity sensor 730 is mounted on the mounting base 740. The proximity sensor 730 is mounted on the frame 710 via the mounting base 740. This mounting structure is more convenient than directly mounting the proximity sensor 730 on the frame 710. Further, referring to Figures 9 to 11, in this embodiment, the mounting base 740 is adjustable on the frame 710 along the conveying direction of the conveying device 300. By adjusting the mounting position of the mounting base 740 on the frame 710 along the conveying direction of the conveying device 300, the distance between the proximity sensor 730 and the lifting gate 720 can be adjusted, thus allowing for finding a suitable fixing position for the proximity sensor 730 according to actual conditions.

[0110] The specific installation method of the mounting base 740 on the frame 710 can be set according to the actual situation. Optionally, referring to Figures 10 and 11, in this embodiment, the mounting base 740 is fixedly installed on the frame 710 by the second screw connector 750. The mounting base 740 is provided with a first oblong hole 741 for the second screw connector 750 to pass through. The first oblong hole 741 extends along the conveying direction of the conveying device 300. The mounting base 740 is installed on the frame 710 by the second screw connector 750, and the mounting base 740 is provided with the first oblong hole 741 corresponding to the second screw connector 750. Through the cooperation of the first oblong hole 741 and the second screw connector 750, the installation position of the mounting base 740 on the frame 710 can be adjusted along the conveying direction of the conveying device 300, thereby realizing the distance between the proximity sensor 730 and the lifting gate 720. The second screw connector 750 can be a screw, etc., and a flat washer 751, a spring washer 752, etc. can also be installed on the second screw connector 750. Further, referring to Figures 10 and 11, in this embodiment, the mounting base 740 is provided with a plurality of first oblong holes 741 at intervals along the conveying direction of the conveying device 300. By selectively installing the second screw connector 750 at different first oblong holes 741, the mounting position of the mounting base 740 on the frame 710 can also be adjusted along the conveying direction of the conveying device 300.

[0111] The detection end of the proximity sensor 730 is located on the upper side of the conveying device 300. Optionally, referring to Figures 9 to 11, in this embodiment, the proximity sensor 730 is mounted on the mounting base 740 in an adjustable manner along the lifting direction of the lifting gate 720. Since the mounting position of the proximity sensor 730 on the mounting base 740 is adjustable up and down, the proximity sensor 730 can be adjusted to a suitable height position according to the actual situation, so that the proximity sensor 730 can accurately detect the bottle-blocking blocks and bottle-pushing blocks on the conveyor belt.

[0112] The specific installation method of the proximity sensor 730 on the mounting base 740 can be set according to the actual situation. Optionally, referring to Figures 10 and 11, in this embodiment, the mounting base 740 is provided with a second oblong hole 742 for the proximity sensor 730 to pass through. The second oblong hole 742 extends along the lifting direction of the lifting gate 720. The proximity sensor 730 is fixedly installed in the second oblong hole 742 by a locking nut 760. After inserting the detection end of the proximity sensor 730 into the second oblong hole 742 and adjusting the height of the proximity sensor 730 up and down along the second oblong hole 742, the proximity sensor 730 on the mounting base 740 is locked and fixed by the locking nut 760. Through the cooperation between the second oblong hole 742 and the detection end of the proximity sensor 730, the installation position of the proximity sensor 730 on the mounting base 740 can be adjusted up and down, thereby adjusting the proximity sensor 730 to a suitable height according to the actual situation.

[0113] The specific design of the mounting base 740 is not particularly limited. Optionally, referring to Figures 10 and 11, in this embodiment, the mounting base 740 includes a first plate portion 743 and a second plate portion 744. The first plate portion 743 is fitted onto the frame 710, and the second plate portion 744 is formed by bending and extending from the end of the first plate portion 743 near the conveying device 300. The proximity sensor 730 is mounted on the second plate portion 744. The mounting base 740 is L-shaped and has a relatively simple structure.

[0114] Optionally, referring to Figures 1, 12, and 13, in this embodiment, the lifting gate 720 includes a fixed flange 721, a motor module 723, a transition flange 724, and a limit pin 725. The fixed flange 721 is installed on the outer wall of the housing 100, allowing one end of the gate drive shaft 722 to extend from the fixed flange 721 to the outside of the housing 100. The motor module 723 is located on the side of the fixed flange 721 away from the housing 100, and the transition flange 724 is installed on the motor module 723. The transition flange 724 and the fixed flange 725 are connected. 1. The gate drive shaft 722 is spaced apart axially, allowing one end of the gate drive shaft 722 located outside the housing 100 to extend into the motor module 723 from the transition flange 724, so that the motor module 723 and the end of the gate drive shaft 722 located outside the housing 100 are dynamically coupled; the limit pin 725 is arranged to extend axially along the gate drive shaft 722, and the two ends of the limit pin 725 are respectively connected to the fixed flange 721 and the transition flange 724, so as to limit the rotation of the motor module 723 relative to the housing 100 by the limit pin 725. Specifically, the lifting gate 720 also includes a gate and a gate drive shaft 722. The gate is located inside the housing 100, and the gate drive shaft 722 is inserted into the housing 100. The portion of the gate drive shaft 722 inside the housing 100 is dynamically coupled to the gate, while one end of the gate drive shaft 722 is located outside the housing 100 and is dynamically coupled to the motor module 723. The motor module 723 drives the gate drive shaft 722 to rotate, thereby causing the gate to rise and fall within the housing 100. The end of the gate drive shaft 722 that is dynamically coupled to the motor module 723 is defined as the drive end of the gate drive shaft 722, and the drive end of the gate drive shaft 722 is located outside the housing 100.

[0115] A limiting structure is provided between the transmission end of the gate drive shaft 722 and the motor module 723. This limiting structure not only limits the axial movement of the gate drive shaft 722 and the motor module 723, but also limits their movement circumferentially, thereby fixing the motor module 723 to the transmission end of the gate drive shaft 722. The specific configuration of the limiting structure will be described in more detail below.

[0116] The motor module 723 is located outside the housing 100. The motor module 723 is connected to the housing 100 through a fixed flange 721, a transition flange 724, and a limit pin 725. This not only effectively prevents the motor module 723 from rotating with the gate drive shaft 722, but also prevents the motor module 723 from getting stuck or jammed due to direct connection with the housing 100, thus avoiding damage to the motor module 723 and improving the installation accuracy and operational stability of the motor module 723.

[0117] The fixed flange 721 is installed on the outer wall of the housing 100. Optionally, as shown in Figures 12 to 14, in this embodiment, a housing flange 120 is provided on the outer wall of the housing 100. The fixed flange 721 is connected to the end of the housing flange 120 near the motor module 723, and the fixed flange 721 and the housing flange 120 are detachably connected. The housing flange 120 can be fixed to the outer wall of the housing 100 by welding or other means. The fixed flange 721 is connected to the housing flange 120 on the housing 100, and the drive end of the gate drive shaft 722 can extend from the housing flange 120 to the outside of the housing 100, and the drive end of the gate drive shaft 722 can pass through the fixed flange 721.

[0118] Since the fixed flange 721 and the housing flange 120 are detachably connected, the fixed flange 721, motor module 723, transition flange 724, limit pin 725, and gate drive shaft 722 can be assembled into a module, and then passed through the housing 100 from the housing flange 120 to fix the fixed flange 721 to the housing flange 120. This makes the assembly and disassembly of the lifting gate 720 more convenient. The specific method of the detachable connection between the fixed flange 721 and the housing flange 120 can be set according to the actual situation. Optionally, please refer to Figures 12, 13, and 15. In this embodiment, the fixed flange 721 and the housing flange 120 are fixedly connected by a first screw connector. The detachable connection between the fixed flange 721 and the housing flange 120 is achieved by the first screw connector. Multiple first screw connectors are usually arranged at intervals along the circumference of the fixed flange 721. The first screw connector can be a screw, etc.

[0119] The transition flange 724 is mounted on the motor module 723. The drive end of the gate drive shaft 722 extends into the motor module 723 from the transition flange 724. The transition flange 724 can be fixedly mounted on the motor module 723 by welding or bolting. Optionally, referring to Figures 13, 14, and 16, in this embodiment, the transition flange 724 and the motor module 723 are fixedly connected by a third bolt. The transition flange 724 and the motor module 723 are detachably connected by the third bolt. Multiple third bolts are typically spaced along the circumference of the transition flange 724, and the third bolts can be screws or the like.

[0120] The motor module 723 is typically a geared motor. Optionally, as shown in Figures 12 to 14, in this embodiment, the motor module 723 includes a reducer 7231. One end of the gate drive shaft 722 located outside the housing 100 is dynamically coupled to the reducer 7231. A transition flange 724 is mounted on the reducer 7231. The drive end of the gate drive shaft 722 extends into the reducer 7231 from the transition flange 724. A limit structure is provided between the drive end of the gate drive shaft 722 and the reducer 7231, forming a dynamic coupling connection between them.

[0121] As described above, a limiting structure is provided between the transmission end of the gate drive shaft 722 and the motor module 723. Optionally, referring to Figures 12 to 14, in this embodiment, a limiting key 726 is provided between the gate drive shaft 722 and the motor module 723 to limit the gate drive shaft 722 and the motor module 723 in the circumferential direction. Keyways are provided on the circumferential side of the transmission end of the gate drive shaft 722 and the inner side of the reducer 7231 corresponding to the limiting key 726. The limiting structure includes the limiting key 726, the keyway on the gate drive shaft 722, and the keyway on the reducer 7231. Through the cooperation of the keyway on the gate drive shaft 722, the keyway on the reducer 7231, and the limiting key 726, the gate drive shaft 722 and the motor module 723 can be limited in the circumferential direction.

[0122] Optionally, referring to Figures 12 to 14, in this embodiment, a second screw connector 7232 is installed on the motor module 723. The tail of the second screw connector 7232 extends into the motor module 723 and is threadedly connected to the end face of the gate drive shaft 722 away from the housing 100. The limiting structure includes the second screw connector 7232, which is installed on the end face of the reducer 7231 away from the transition flange 724. The tail of the second screw connector 7232 is threadedly connected to the end face of the drive end of the gate drive shaft 722. Through the engagement of the second screw connector 7232 with the threaded hole on the gate drive shaft 722, the gate drive shaft 722 and the motor module 723 can be limited axially. The second screw connector 7232 can be a screw or the like.

[0123] Further referring to Figures 12 to 14, in this embodiment, an end cover 7233 is installed on the end face of the reducer 7231 away from the transition flange 724. A second threaded connector 7232 is installed on the end cover 7233, and a spring clip 7235 and a washer 7234 are sequentially installed on the second threaded connector 7232. The end cover 7233 can be a flat cover, and a circular hole for installing the second threaded connector 7232 is provided on the end cover 7233.

[0124] A limiting pin 725 connects the fixed flange 721 and the transition flange 724 to restrict the rotation of the transition flange 724 and the motor module 723. Optionally, referring to Figures 13 and 16, in this embodiment, a second limiting groove 7241 is provided on the end face of the transition flange 724 near the fixed flange 721, and one end of the limiting pin 725 near the transition flange 724 extends into the second limiting groove 7241. The shape of the end of the limiting pin 725 near the transition flange 724 is usually adapted to the shape of the second limiting groove 7241. Through the cooperation between one end of the limiting pin 725 and the second limiting groove 7241 on the transition flange 724, the limiting pin 725 can be inserted and fixed on the transition flange 724.

[0125] Optionally, referring to Figure 16, in this embodiment, the second limiting groove 7241 penetrates the end face of the transition flange 724 away from the fixed flange 721. That is, the second limiting groove 7241 penetrates the transition flange 724 axially along the gate drive shaft 722.

[0126] The shapes of the limiting pin 725 and the second limiting groove 7241 can be set according to the actual situation. For example, please refer to Figures 13 and 16. The limiting pin 725 is cylindrical, and the second limiting groove 7241 is a circular hole. The transition flange 724 is a circular flange with a mounting hole. The transition flange 724 has a circular hole for mounting the limiting pin 725.

[0127] Optionally, referring to Figures 13 and 15, in this embodiment, a first limiting groove 7211 is provided on the end face of the fixed flange 721 near the transition flange 724, and one end of the limiting pin 725 near the fixed flange 721 extends into the first limiting groove 7211. After one end of the limiting pin 725 is inserted and fixed in the second limiting groove 7241 on the transition flange 724, the other end of the limiting pin 725 is then inserted into the first limiting groove 7211, thus completing the assembly between the fixed flange 721, the transition flange 724, and the limiting pin 725.

[0128] Optionally, referring to Figure 15, in this embodiment, the first limiting groove 7211 penetrates the end face of the fixed flange 721 away from the transition flange 724. That is, the first limiting groove 7211 penetrates the fixed flange 721 axially along the gate drive shaft 722.

[0129] Optionally, referring to Figure 15, in this embodiment, the first limiting groove 7211 penetrates the peripheral side surface of the fixed flange 721. The first limiting groove 7211 is provided as a slotted hole, and one end of the first limiting groove 7211 in the extending direction penetrates the peripheral side surface of the fixed flange 721, thereby forming an entrance to the first limiting groove 7211 on the peripheral side surface of the fixed flange 721, so that one end of the limiting pin 725 can be inserted into the first limiting groove 7211 from the entrance.

[0130] Optionally, referring to Figures 13 and 15, in this embodiment, the first limiting groove 7211 extends vertically, with its upper end penetrating the circumferential side of the fixed flange 721, and its lower end abutting against the limiting pin 725. The shape of the lower end of the first limiting groove 7211 matches the shape of the end of the limiting pin 725 near the fixed flange 721. An upward-facing inlet of the first limiting groove 7211 is formed on the circumferential side of the fixed flange 721, and the shape of the lower end of the first limiting groove 7211 matches the shape of the limiting pin 725, allowing one end of the limiting pin 725 to be engaged into the first limiting groove 7211 from top to bottom.

[0131] Optionally, referring to Figures 17 to 19, in this embodiment, the conveying device 300 includes a mesh belt 310, a drive shaft 320, a mesh belt forward rotation drive module 330, and a mesh belt reverse rotation drive module 340. The drive shaft 320 extends along the width direction of the mesh belt 310, with both ends of the drive shaft 320 extending beyond the mesh belt 310. Multiple drive shafts 320 are spaced apart along the circumference of the mesh belt 310. Each drive shaft 320 is fitted with a pulley 321, which abuts against the lower side of the mesh belt 310. At least one end of each of the multiple drive shafts 320 is fitted with a drive sprocket 322. Multiple drive sprockets located at the same end of the multiple drive shafts 320... The moving sprocket 322 is connected via a chain 323; one of the multiple drive shafts 320 is a forward drive shaft 320a, one end of which is poweredly coupled to the mesh belt forward drive module 330, so that the mesh belt forward drive module 330 drives the multiple drive shafts 320 to rotate in the forward direction, thereby driving the mesh belt 310 to move in the forward direction; one of the multiple drive shafts 320 is a reverse drive shaft 320b, one end of which is poweredly coupled to the mesh belt reverse drive module 340, so that the mesh belt reverse drive module 340 drives the multiple drive shafts 320 to rotate in the reverse direction, thereby driving the mesh belt 310 to move in the reverse direction.

[0132] Specifically, the drive shaft 320 is rotatably mounted on the housing of the oven 1000. For example, the drive shaft 320 is a solid shaft with a shoulder and keyway. The shaft end of the drive shaft 320 is provided with a flange plate 325 and a shaft mounting seat 326. The drive shaft 320 is mounted on the housing of the oven 1000 via the flange plate 325 and the shaft mounting seat 326. The middle part of the drive shaft 320 is located inside the oven 1000, and both the drag wheel 321 and the drive sprocket 322 are mounted in the middle part of the drive shaft 320; that is, both the drag wheel 321 and the drive sprocket 322 are located inside the oven 1000. One or both ends of the drive shaft 320 are equipped with drive sprockets 322. For example, as shown in Figures 17 to 19, two drive sprockets 322 are respectively installed at both ends of the drive shaft 320. The transmission device 300 also includes two chains 323. The multiple drive sprockets 322 located at the same end of the multiple drive shafts 320 are connected by the chains 323, so that the multiple drive shafts 320 can rotate synchronously.

[0133] Each drive shaft 320 typically has multiple pulleys 321 spaced apart along its width. For example, referring to Figures 17 to 19, in this embodiment, each drive shaft 320 has two pulleys 321 spaced apart along its width. The following description will use an example where each drive shaft 320 has two drive sprockets 322 and two pulleys 321. The pulleys 321 are located between the two drive sprockets 322. The pulleys 321 can both support the conveyor belt 310 and limit its movement in the width direction to prevent deviation during transmission.

[0134] The conveyor belt forward rotation drive module 330 is located outside the oven 1000. One of the multiple drive shafts 320 is a forward rotation drive shaft 320a, one end of which is located outside the oven 1000 and is power-coupled to the conveyor belt forward rotation drive module 330. During normal production, the controller of the oven 1000 controls the conveyor belt forward rotation drive module 330 to start working. The conveyor belt forward rotation drive module 330 drives the forward rotation drive shaft 320a to rotate forward, causing the multiple drive shafts 320 to rotate forward synchronously. This drives the conveyor belt 310 to move forward through the multiple drive shafts 320, so as to normally transport the bottles on the conveyor belt 310 to the downstream equipment.

[0135] The mesh belt reverse drive module 340 is also located outside the oven 1000. One of the multiple drive shafts 320 is a reverse drive shaft 320b. One end of the reverse drive shaft 320b is located outside the oven 1000 and is power-coupled to the mesh belt reverse drive module 340. The mesh belt forward drive module 330 and the mesh belt reverse drive module 340 exert opposite directions of tension on the mesh belt 310, thus ensuring the tension of the mesh belt 310. After the last batch of bottles is conveyed, when the bottle pusher 900 needs to be removed, the controller of the oven 1000 controls the mesh belt reverse drive module 340 to start working. The mesh belt reverse drive module 340 drives the reverse drive shaft 320b to rotate in the reverse direction, causing multiple drive shafts 320 to rotate synchronously in the opposite direction. This drives the mesh belt 310 to move in the reverse direction through multiple drive shafts 320, so as to convey the bottle pusher 900 to the front opening of the oven 1000 for removal, thereby achieving the removal of the bottle pusher 900 without affecting downstream equipment.

[0136] Optionally, referring to Figures 1 and 19, in this embodiment, the mesh belt reversing drive module 340 includes a reversing motor 341 and a reversing reducer 342 mounted on the reversing motor 341. The reversing reducer 342 is dynamically coupled to one end of the reversing drive shaft 320b. The reversing motor 341 can be a variable frequency motor. Using a variable frequency motor drive provides high transmission torque, ensuring smooth operation of the conveying device 300 during the conveying of the bottle pushing device 900.

[0137] Optionally, referring to Figures 1 and 19, in this embodiment, the conveying device 300 further includes a reverse drive module mounting plate 343. The mesh belt reverse drive module 340 is mounted on the reverse drive module mounting plate 343 so that the mesh belt reverse drive module 340 is mounted on the outer wall of the oven 1000 via the reverse drive module mounting plate 343. The reverse motor 341, the reverse reducer 342, and the reverse drive module mounting plate 343 are connected as a whole. After the reverse drive shaft 320b and the shaft mounting seat 326 are fixed on the outer wall of the oven 1000, the entire assembly of the reverse motor 341, the reverse reducer 342, and the reverse drive module mounting plate 343 is fitted with the reverse drive shaft 320b and fixed to the outer wall of the oven 1000 with bolts. Alternatively, the reverse motor 341, reverse reducer 342, and reverse drive module mounting plate 343 can be removed as a whole. When it is necessary to repair or replace the reverse drive shaft 320b and shaft parts, the entire assembly can be removed simply by removing the end limit screws, simplifying the disassembly and assembly work and greatly reducing the workload of the staff.

[0138] Optionally, referring to Figures 1 and 18, in this embodiment, the conveyor belt forward drive module 330 includes a forward motor 332, a forward reducer 333 mounted on the forward motor 332, and a clutch 334 mounted on the forward reducer 333. The clutch 334 is dynamically coupled to one end of the forward drive shaft 320a. The forward motor 332 can be a three-phase variable frequency motor. Using a variable frequency motor drive provides high transmission torque, ensuring smooth operation of the conveying device 300 during bottle conveying.

[0139] Optionally, referring to Figures 1 and 18, in this embodiment, the conveying device 300 further includes a forward rotation drive module mounting plate 335, on which the mesh belt forward rotation drive module 330 is mounted, so that the mesh belt forward rotation drive module 330 is mounted on the outer wall of the oven 1000 through the forward rotation drive module mounting plate 335.

[0140] Optionally, referring to Figures 1 and 18, in this embodiment, the mesh belt forward rotation drive module 330 is connected to one end of the forward rotation drive shaft 320a via a chain and sprocket transmission mechanism 331. The chain and sprocket transmission mechanism 331 between the mesh belt forward rotation drive module 330 and the forward rotation drive shaft 320a increases the driving force of the mesh belt forward rotation drive module 330 on the forward rotation drive shaft 320a and reduces the rotational speed of the forward rotation drive shaft 320a, thereby ensuring the smooth operation of the conveying device 300 during bottle conveying.

[0141] Optionally, referring to Figures 1 and 17, in this embodiment, the forward drive shaft 320a and the reverse drive shaft 320b are respectively disposed at both ends of the conveying device 300 in the conveying direction. This arrangement of the forward drive shaft 320a and the reverse drive shaft 320b helps ensure that the conveyor belt forward drive module 330 and the conveyor belt reverse drive module 340 can drive the conveyor belt 310 to smoothly rotate in both directions.

[0142] Optionally, referring to Figures 17 to 19, in this embodiment, each drive shaft 320 is fitted with a retaining ring 324. Two retaining rings 324 are respectively provided on both sides of the drag wheel 321 and the drive sprocket 322 in the width direction, so as to fix the drag wheel 321 and the drive sprocket 322 onto the drive shaft 320 through the retaining rings 324. The retaining ring 324 has a threaded hole radially and an axial gap of approximately 2mm. After the drag wheel 321 and the drive sprocket 322 are installed and positioned on the drive shaft 320, retaining rings 324 are installed on both sides of the drag wheel 321 and the drive sprocket 322, and bolts are used to lock the retaining rings 324, limiting the movement of the drag wheel 321 and the drive sprocket 322 and preventing the drag wheel 321 and the drive sprocket 322 from shifting during the operation of the conveyor device 300.

[0143] Optionally, referring to Figures 17 to 19, in this embodiment, the peripheral side of the pulley 321 is provided with protruding teeth corresponding to the mesh holes of the mesh belt 310. During the rotation of the drive shaft 320, the protruding teeth on the pulley 321 will sequentially enter the mesh holes of the mesh belt 310 along the conveying direction, thereby pulling the mesh belt 310. Specifically, the pulley 321 on the drive shaft 320 inserted into the area enclosed by the mesh belt 310 is provided with protruding teeth, while the pulley 321 on the drive shaft 320 located below the mesh belt 310 may or may not have protruding teeth.

[0144] Referring to Figure 20, the conveyor 300 also includes a bottle pusher 900, which is mounted on the conveyor belt 310. Placing the bottle pusher 900 on the conveyor belt 310 assists in emptying the last bottle. The specific design of the bottle pushing device 900 can be set according to the actual situation. Optionally, please refer to Figures 20 to 22. In this embodiment, the bottle pushing device 900 includes a bottle pushing fixing member 910, a bottle pushing stop member 920, and a support wheel 930. The bottle pushing fixing member 910 is used to be installed on the mesh belt 310 of the conveying device 300. The bottle pushing stop member 920 is located at one end of the bottle pushing device 900 away from the bottle pushing fixing member 910 in the conveying direction of the conveying device 300. The bottle pushing stop member 920 is used to abut against one side of the bottle on the mesh belt 310 in the conveying direction. The support wheel 930, which can rotate along the axis in the width direction of the mesh belt 310, is installed on the bottle pushing stop member 920 so that the bottle pushing stop member 920 abuts against the mesh belt 310 through the support wheel 930.

[0145] Specifically, the bottle pusher 900 can be fixed to the conveyor belt 310 via the bottle pusher fixing member 910. When the conveyor belt 310 moves along the conveying direction, it can drive the bottle pusher 900 to move along the conveying direction as well. The bottle pusher fixing member 910 and the bottle pusher stop 920 are respectively disposed at both ends of the bottle pusher 900 in the conveying direction, with the bottle pusher stop 920 located on the side of the bottle pusher fixing member 910 closer to the bottle body. After the bottle pusher 900 is fixed to the conveyor belt 310, the bottle pusher 900 can abut against the bottle body on the conveyor belt 310 via the bottle pusher stop 920, providing support for the bottle body in the conveying direction, thereby enabling the bottle body to be smoothly conveyed to the downstream filling machine via the bottle pusher 900. A connecting transition plate is provided between the oven 1000 and the filling machine. During the process of the bottle pusher 900 conveying the bottle to the downstream filling machine, the bottle pusher 920 may come into contact with the surface of the connecting transition plate. Since the bottle pusher 920 is equipped with a support wheel 930, the support wheel 930 can support the bottle pusher 920. In this way, the bottle pusher 920 will not directly contact the surface of the connecting transition plate, but will form a rolling contact with the connecting transition plate through the support wheel 930. This can avoid the problem of the bottle pusher 920 damaging or scratching the surface of the connecting transition plate.

[0146] One or more support wheels 930 may be installed on the bottle pusher 920. Optionally, referring to Figures 22 to 24, in this embodiment, multiple support wheels 930 are installed at intervals along the width direction of the mesh belt 310 on the bottle pusher 920. The bottle pusher 920 is arranged in an elongated strip shape extending along the width direction of the mesh belt 310, and the multiple support wheels 930 are evenly spaced on the bottle pusher 920 along the width direction of the mesh belt 310. Furthermore, all the multiple support wheels 930 protrude from the surface of the bottle pusher 920 near the mesh belt 310, thus enabling the multiple support wheels 930 to support the bottle pusher 920.

[0147] The support wheel 930 is mounted on the bottle pusher stop 920. Specifically, the support wheel 930 can be mounted on the surface of the bottle pusher stop 920 near the mesh belt 310 or on the surface of the bottle pusher stop 920 near the bottle pusher fixing member 910. Optionally, referring to Figures 20 to 22, in this embodiment, the support wheel 930 is mounted on the surface of the bottle pusher stop 920 near the bottle pusher fixing member 910. The surface of the bottle pusher stop 920 away from the bottle pusher fixing member 910 is used to abut against the bottle body, and by mounting the support wheel 930 on the surface of the bottle pusher stop 920 near the bottle pusher fixing member 910, contact between the support wheel 930 and the bottle body can be avoided.

[0148] Optionally, referring to Figures 22 and 23, in this embodiment, the support wheel 930 is adjustablely mounted on the bottle pusher 920 in a direction perpendicular to the plane of the mesh belt 310. By adjusting the support wheel 930 on the bottle pusher 920 in a direction perpendicular to the plane of the mesh belt 310, the distance between the bottle pusher 920 and the mesh belt 310 in a direction perpendicular to the plane of the mesh belt 310 can be adjusted. That is, the height of the bottle pusher 920 can be adjusted by the support wheel 930, so that the height of the bottle pusher 920 can be adjusted according to the height of the bottle in actual production.

[0149] Further, please refer to Figures 22 and 23. In this embodiment, a support wheel bracket 931 is installed on the bottle pusher 920. The support wheel 930 is rotatably mounted on the support wheel bracket 931. The support wheel bracket 931 is fixedly mounted on the bottle pusher 920 by a first screw connector 932. The support wheel bracket 931 is provided with a support wheel waist-shaped hole 933 through which the first screw connector 932 passes. The support wheel waist-shaped hole 933 extends in a direction perpendicular to the plane of the mesh belt 310. The support wheel 930 is mounted on the bottle pusher stop 920 via the support wheel bracket 931, and the support wheel bracket 931 is mounted on the bottle pusher stop 920 via the first screw connector 932. The support wheel bracket 931 is provided with a support wheel waist-shaped hole 933 corresponding to the first screw connector 932. Through the cooperation between the support wheel waist-shaped hole 933 and the first screw connector 932, the installation position of the support wheel bracket 931 on the bottle pusher stop 920 can be adjusted in a direction perpendicular to the plane of the mesh belt 310, thereby realizing the adjustment of the support wheel 930 on the bottle pusher stop 920 in a direction perpendicular to the plane of the mesh belt 310.

[0150] Optionally, referring to Figures 20 and 22, in this embodiment, the bottle pusher 920 has two side pulleys 950 mounted on two opposite end faces of the conveyor belt 310 in the width direction. The two side pulleys 950 are rotatably arranged along an axis perpendicular to the plane of the conveyor belt 310. The two side pulleys 950 are respectively positioned corresponding to the two fins 350 of the conveying device 300, so that the bottle pusher 920 is centered and aligned through contact between the side pulleys 950 and the fins 350. The conveying device 300 also includes two fins 350 located on both sides of the conveyor belt 310 in the width direction. When the bottle pusher 920 is in the centered position, the two side pulleys 950 do not contact the two fins 350. If the bottle pusher 920 tilts to one side, the side pulley 950 on that side forms a rolling contact with the fin 350, thereby allowing the bottle pusher 920 to automatically return to the centered position. Thus, the two side pulleys 950 can provide stable guidance for the bottle pushing device 900. The bottle pushing device 900 can automatically correct and center itself in the width direction of the mesh belt 310 through the two side pulleys 950, thereby ensuring that the bottle pushing device 900 will not tilt during the conveying process of the mesh belt 310.

[0151] Optionally, referring to Figures 20 and 22, in this embodiment, the bottle pusher 920 has a detection block 960 mounted on at least one of its two opposite end faces in the width direction of the conveyor belt 310, so that the proximity sensor 730 can detect the bottle pusher 900 through the detection block 960. The detection block 960 may be mounted on one of the two opposite end faces of the conveyor belt 310, i.e., one detection block 960 is mounted on the bottle pusher 920; or the detection blocks 960 may be mounted on both opposite end faces of the conveyor belt 310, i.e., two detection blocks 960 are mounted on the bottle pusher 920. The detection block 960 protrudes from the surface of the bottle pusher 920 away from the conveyor belt 310. The proximity sensor 730 is triggered by the end of the detection block 960 protruding from the bottle pusher 920, so that the proximity sensor 730 can detect the bottle pusher 900.

[0152] The bottle pusher 900 can be fixed to the conveyor belt 310 via a bottle pusher fixing member 910. The bottle pusher fixing member 910 is typically detachably mounted on the conveyor belt 310. The specific installation method between the bottle pusher fixing member 910 and the conveyor belt 310 can be set according to actual conditions. Optionally, referring to Figures 20 and 24, in this embodiment, a bottle pusher block buckle 911 for snapping and fixing with the conveyor belt 310 is installed on the surface of the bottle pusher fixing member 910 near the conveyor belt 310. The bottle pusher fixing member 910 forms a snap-fit ​​with the conveyor belt 310 through the bottle pusher block buckle 911, thereby achieving detachable mounting and dismounting of the bottle pusher 900.

[0153] The specific shape and style of the bottle pusher buckle 911 can be set according to the actual situation. For example, the bottle pusher buckle 911 can be hook-shaped or similar. Optionally, referring to Figures 20 and 24, in this embodiment, the surface of the bottle pusher buckle 911 near the mesh belt 310 is provided with teeth 912 that engage with the mesh holes of the mesh belt 310. The bottle pusher buckle 911 has a cuboid structure, and the bottom surface of the bottle pusher buckle 911 is provided with teeth 912. Each tooth 912 on the bottle pusher buckle 911 engages with the corresponding mesh hole on the mesh belt 310, thereby securing the bottle pusher buckle 911 to the mesh belt 310, and the bottom surface of the bottle pusher buckle 911 can fit against the mesh belt 310.

[0154] Optionally, referring to Figure 24, in this embodiment, a plurality of bottle pusher buckles 911 are provided at intervals along the width direction of the mesh belt 310 on the bottle pusher fixing member 910. Further, referring to Figures 20 to 22, in this embodiment, the plurality of bottle pusher buckles 911 are arranged in a single row in the transmission direction, which is beneficial to reducing the size of the bottle pusher fixing member 910 in the transmission direction.

[0155] Optionally, referring to Figures 20, 22, and 24, in this embodiment, the bottle pushing device 900 further includes a bottle pushing connector 940 extending along the conveying direction. The two ends of the bottle pushing connector 940 are respectively connected to a bottle pushing fixture 910 and a bottle pushing stop 920. Both the bottle pushing fixture 910 and the bottle pushing stop 920 are elongated strips extending along the width direction of the mesh belt 310. One or more bottle pushing connectors 940 are installed between the bottle pushing fixture 910 and the bottle pushing stop 920. By extending the length of the bottle pushing connector 940, the bottle pushing distance of the bottle pushing device 900 can be increased.

[0156] The bottle pusher connector 940 and the bottle pusher stop 920 can be fixed by welding or by screws. Optionally, as shown in Figures 20, 22 and 24, in this embodiment, one end of the bottle pusher connector 940 extends into the bottle pusher stop 920 from the surface of the bottle pusher stop 920 near the bottle pusher fixing member 910. A second screw 941 is installed on the surface of the bottle pusher stop 920 away from the mesh belt 310. The tail of the second screw 941 extends into the bottle pusher stop 920 and is threadedly connected to the bottle pusher connector 940. The second screw connector 941 is installed on the surface of the bottle pusher stop 920 away from the conveyor belt 310. The tail of the second screw connector 941 forms a threaded engagement with the circumferential side of the end of the bottle pusher connector 940 located inside the bottle pusher stop 920, thereby fixing the bottle pusher connector 940 to the bottle pusher stop 920. One end of the bottle pusher connector 940 extends into the bottle pusher stop 920, which can prevent the bottle pusher stop 920 from falling off. Furthermore, this installation method of the second screw connector 941 can avoid contact between the second screw connector 941 and the bottle body.

[0157] Further, please refer to Figures 20, 22 and 24. In this embodiment, an annular abutment surface is provided on the peripheral side of the bottle pusher connector 940 near the bottle pusher stop 920. The annular abutment surface abuts against the surface of the bottle pusher stop 920 near the bottle pusher fixing member 910. By providing the annular abutment surface, the installation and positioning between the bottle pusher connector 940 and the bottle pusher stop 920 can be achieved.

[0158] Similarly, the bottle pusher connector 940 and the bottle pusher fixing member 910 can also be fixed by welding or screw fastening. Optionally, referring to Figures 20, 22, and 24, in this embodiment, one end of the bottle pusher connector 940 extends into the bottle pusher fixing member 910 from the surface of the bottle pusher fixing member 910 near the bottle pusher stop 920. A third screw fastener 942 is installed on the surface of the bottle pusher fixing member 910 away from the bottle pusher stop 920. The tail of the third screw fastener 942 extends into the bottle pusher fixing member 910 and is threadedly connected to the bottle pusher connector 940. The third screw fastener 942 is installed on the surface of the bottle pusher fixing member 910 away from the bottle pusher stop 920, and the tail of the third screw fastener 942 forms a threaded engagement with the end face of the end of the bottle pusher connector 940 located inside the bottle pusher fixing member 910, thereby achieving the fixation between the bottle pusher connector 940 and the bottle pusher fixing member 910. Furthermore, this installation method of the third screw connector 942 helps to reduce the size of the bottle pusher fixing part 910 in the transmission direction.

[0159] The bottle pushing distance of the bottle pushing device 900 is the sum of the dimensions of the bottle pusher stop 920 and the bottle pusher connector 940 in the conveying direction. With the dimension of the bottle pushing device 900 in the conveying direction remaining constant, by arranging a single row of bottle pusher block latches 911 on the bottle pusher fixing member 910, the overall dimension of the bottle pusher fixing member 910 in the conveying direction can be reduced. This relatively increases the sum of the dimensions of the bottle pusher stop 920 and the bottle pusher connector 940 in the conveying direction, thereby increasing the bottle pushing distance of the bottle pushing device 900. This avoids the problem of a short bottle pushing distance and achieves the effect of conveying the bottle to the filling machine without damaging or scratching the connecting transition plate. Specifically, the bottle pushing distance of the bottle pushing device 900 is not less than four-fifths of its dimension in the conveying direction.

[0160] An injection device 800 is typically provided on the oven 1000. For example, an injection device 800 is provided on the preheating module 130 and located below the conveying device 300. Optionally, referring to Figures 25 and 28, in this embodiment, the injection device 800 includes an injection pipe 810 and a first connector 820. The injection pipe 810 is mounted on the housing 100, with one end of the injection pipe 810 located inside the housing 100. An injection hole 811 is provided at the end of the injection pipe 810 located inside the housing 100. The first connector 820 is mounted on the end of the injection pipe 810 away from the injection hole 811 and is located outside the housing 100. A mark 821 is provided on the outer surface of the first connector 820, and the mark 821 is opposite to the injection hole 811 in the axial direction of the injection pipe 810.

[0161] Specifically, the spraying device 800 can be an air spraying device or a water spraying device, which can clean and dry the conveyor belt 310. The spraying pipe 810 is usually a straight pipe extending along the width direction of the conveyor belt 310. One end of the spraying pipe 810 is inserted into the wall of the housing 100 and connected to an external pipeline (i.e., an external water pipe or an external air pipe). The end of the spraying pipe 810 located inside the housing 100 is provided with a spray hole 811, from which water or air can be sprayed onto the conveyor belt 310 to achieve the function of cleaning and drying the conveyor belt 310 by the spraying device 800. Referring to Figures 25, 26 and 28, multiple spray holes 811 are usually provided at intervals along the axial direction of the spraying pipe 810 on the peripheral sidewall of the spraying pipe 810.

[0162] The first connector 820 is fixedly installed at one end of the spray pipe 810 that connects to the external pipeline. The first connector 820 is located outside the housing 100. The first connector 820 is usually arranged in a ring or cylindrical shape. The outer surface of the first connector 820 includes the outer peripheral side surface and two end faces. A mark 821 is provided on the outer surface of the first connector 820. Since the mark 821 and the spray hole 811 are opposite each other in the axial direction of the spray pipe 810, the mark 821 and the spray hole 811 are located on the same plane. The angle of the mark 821 is equal to the angle of the spray hole 811. The spray hole 811 can be quickly identified and located without removing the spray device 800 through the mark 821. Thus, the angle of the spray hole 811 can be quickly and conveniently adjusted after the spray device 800 is installed.

[0163] A mark 821 is provided on the first connector 820. The mark 821 can be designed in various ways, such as as a protrusion, a recess, or a dot. Optionally, referring to Figures 25 to 27, in this embodiment, the mark 821 is a hole. A hole is drilled on the outer surface of the first connector 820 to serve as the mark 821; this method of marking the mark 821 is relatively simple. Furthermore, the mark hole is usually a blind hole, meaning it does not penetrate the inner surface of the first connector 820. The size of the mark hole is usually equal to the size of the spray hole 811. For example, referring to Figures 26 and 27, in this embodiment, both the mark 821 and the spray hole 811 are circular holes, and the diameter of the mark 821 is equal to the diameter of the spray hole 811.

[0164] Optionally, referring to Figures 25 to 27, in this embodiment, the identifier 821 is disposed on the outer peripheral side of the first connector 820. The identifier 821 is disposed on the outer peripheral side of the first connector 820, which is the exposed surface of the spraying device 800, thus facilitating the operator's identification of the identifier 821 on the first connector 820 during installation. A housing connector 130 is typically installed on the outer wall of the housing 100, and an external pipeline connector is also typically installed on the external pipeline. Correspondingly, a connector for mating with the housing connector 130 and a connector for mating with the external pipeline connector are fixedly installed on the spraying pipe 810. The first connector 820 can be either the connector on the spraying pipe 810 for mating with the housing connector 130 or the connector on the spraying pipe 810 for mating with the external pipeline connector.

[0165] Optionally, referring to Figures 25 to 27, in this embodiment, a housing connector 130 is installed on the outer wall of the housing 100. One end of the spray pipe 810 is inserted into the housing 100 through the housing connector 130, and a first connector 820 is mated with the housing connector 130. That is, the first connector 820 is a connector on the spray pipe 810 for mating with the housing connector 130.

[0166] The identifier 821 can be located at the end of the first connector 820 away from the housing connector 130, or it can be located at the end of the first connector 820 closer to the housing connector 130. Optionally, referring to Figures 25 to 27, in this embodiment, the identifier 821 is located at the end of the first connector 820 away from the housing connector 130. This makes it easier for the operator to identify the identifier 821 when adjusting the angle of the spray hole 811 according to the identifier 821.

[0167] Optionally, referring to Figures 25 to 27, in this embodiment, the spraying device 800 further includes a second connector 830. The second connector 830 is located outside the housing 100 and is connected to the end of the spraying pipe 810 away from the spray hole 811, so as to connect the spraying pipe 810 to an external pipeline through the second connector 830. The second connector 830 is a connector on the spraying pipe 810 for connecting with an external pipeline connector. One end of the spraying pipe 810 is located outside the housing 100, and the end of the spraying pipe 810 located outside the housing 100 is connected and fixed to the second connector 830.

[0168] Further, referring to Figures 25 to 27, in this embodiment, the first connector 820 is fitted onto the end of the second connector 830 near the spray pipe 810. The second connector 830 and the spray pipe 810, as well as the second connector 830 and the first connector 820, can be fixed by welding or other methods. For example, the second connector 830 and the first connector 820 can be welded together to form a single unit, and then the entire unit can be welded to the spray pipe 810, ensuring that the marking 821 on the first connector 820 and the spray hole 811 on the spray pipe 810 are on the same plane.

[0169] An air supply device 400 is typically installed inside the oven 1000 to blow air onto the bottles on the conveying device 300. Optionally, referring to Figures 29 to 31, in this embodiment, the air supply device 400 includes a housing 410 and a guide 430. The housing 410 forms at least two adjacent air outlets 411. The guide 430 is disposed in the housing 410 and located between the two adjacent air outlets 411. The guide 430 extends along the air outlet 411 in the air outlet direction, and the width of the guide 430 gradually decreases in the air outlet direction.

[0170] Specifically, the housing 410 typically has multiple air outlets 411, and these outlets 411 usually have the same shape, size, and airflow direction. The airflow direction of the outlets 411 is perpendicular to the plane on which the outlets 411 are located. The following description will use a horizontal plane as an example, with the airflow direction of the outlets 411 being from top to bottom. The upper end of the guide vane 430 is located on the outer surface of the housing 410. The guide vane 430 is located below two adjacent air outlets 411, and the two adjacent air outlets 411 are spaced apart horizontally. The guide vane 430 is located between the two adjacent air outlets 411. The width of the flow guide 430 is the dimension of the flow guide 430 in the interval direction between two adjacent air outlets 411. The width of the flow guide 430 gradually decreases from top to bottom, thereby forming two flow guide surfaces 431 on the flow guide 430 corresponding to the two adjacent air outlets 411 respectively. The two flow guide surfaces 431 are two opposing surfaces of the flow guide 430 in the interval direction between the two adjacent air outlets 411.

[0171] A guide vane 430 is installed between two adjacent air outlets 411. When the housing 410 has N+1 air outlets 411, N guide vanes 430 can be set for each of the N+1 air outlets 411, so that a guide vane 430 can be set between any two adjacent air outlets 411. The following will be described using the example of a housing 410 having two air outlets 411 and a guide vane 430 between the two air outlets 411. The air supply device 400 is located above the conveying device 300, and the two air outlets 411 on the housing 410 are vertically opposite to the conveyor belt of the conveyor device 300, so that the airflow blown from the two air outlets 411 can be blown towards the bottle on the conveyor belt. Because a flow guide 430 is provided in the blind area between the two air outlets 411, the flow guide 430 can increase the airflow velocity in the lower middle part of the two air outlets 411, making the airflow blown out from the two air outlets 411 more uniform. In addition, the flow guide 430 is provided with two flow guiding surfaces 431 corresponding to the two air outlets 411. The two flow guiding surfaces 431 guide the airflow in the lower middle part of the two air outlets 411 downward, so that the airflow can flow downward smoothly and evenly, achieving the requirements of laminar flow, so that the airflow can be blown evenly onto the bottle on the mesh belt and heated evenly. In this way, the blind area between the two air outlets 411 is effectively eliminated, and the problem of turbulence under the two air outlets 411 is avoided.

[0172] The two guide surfaces 431 can guide the airflow downwards. The guide surfaces 431 can be curved or planar. Optionally, referring to Figures 29 to 31, in this embodiment, both guide surfaces 431 are planar. The surface of the guide 430 near the air outlet 411 is defined as the top surface of the guide 430. The top surface of the guide 430 is connected to the housing 410 and is parallel to the horizontal plane. The top surface of the guide 430 is connected between the upper ends of the two guide surfaces 431. Both guide surfaces 431 are inclined relative to the top surface of the guide 430 along the interval direction of two adjacent air outlets 411. Setting the two guide surfaces 431 as inclined planes improves the downward guiding effect and reduces the likelihood of vortices.

[0173] When both guide surfaces 431 are inclined planes, the cross-sectional shape of the guide 430 can be triangular or trapezoidal. Optionally, referring to Figures 29 to 31, in this embodiment, the guide 430 is arranged in a triangular prism shape. The lower ends of the two guide surfaces 431 are connected, making the cross-sectional shape of the guide 430 triangular, and the overall shape of the guide 430 triangular prism. When the guide 430 is arranged in a triangular prism shape, simulation of the air supply device 400 shows that the airflow from the two air outlets 411 is more uniform.

[0174] Optionally, referring to Figures 29 to 31, in this embodiment, the inclination angles of the two guide surfaces 431 relative to the top surface of the guide 430 are equal. Since the shapes and sizes of the two air outlets 411 are usually the same, the inclination angles of the two guide surfaces 431 are correspondingly equal or approximately equal.

[0175] Optionally, referring to Figures 29 to 31, in this embodiment, the width of the end of the air guide 430 near the air outlet 411 is equal to the distance between two adjacent air outlets 411. The end of the air guide 430 near the air outlet 411 is the upper end of the air guide 430. The width of the air guide 430 gradually decreases from top to bottom, and the width of the upper end of the air guide 430 is the width of the air guide 430 at its widest point, which is also the width of the top surface of the air guide 430. When the width of the upper end of the air guide 430 is equal to or approximately equal to the distance between the two air outlets 411, the air guide 430 can completely cover the area between the two air outlets 411.

[0176] When the width of the upper end of the air guide 430 is equal to the distance between the two air outlets 411, the air supply device 400 is simulated. The simulation results show that the airflow from the two air outlets 411 is more uniform. The specific shape of the air outlets 411 is not particularly limited. Optionally, referring to Figure 29, in this embodiment, the air outlets 411 are square, and the spacing between two adjacent air outlets 411 is along the length of one side of the air outlets 411.

[0177] Optionally, referring to Figure 29, in this embodiment, two adjacent air outlets 411 are symmetrically arranged about the guide vane 430 in the interval direction between the two adjacent air outlets 411. This helps to avoid turbulence under the two air outlets 411 and makes the airflow blown out from the two air outlets 411 more uniform.

[0178] Optionally, referring to Figure 29, in this embodiment, a flow equalization plate 412 is installed at each air outlet 411. The flow equalization plate 412 is usually a perforated plate. Covering and installing the flow equalization plate 412 at the air outlet 411 is beneficial for the airflow blown from the air outlet 411 to be blown evenly towards the bottle.

[0179] Optionally, referring to Figures 29 and 30, in this embodiment, the housing 410 includes at least one channel housing unit 410a, with an air outlet 411 at one end. The housing 410 may include one or more channel housing units 410a, each channel housing unit 410a having one or more air outlets 411 at its lower end, and each channel housing unit 410a having a fan 440 connected to its upper end. When the lower end of the channel housing unit 410a has multiple air outlets 411, a guide vane 430 may be provided between two adjacent air outlets 411 on one channel housing unit 410a. When there are multiple channel housing units 410a, the air outlets 411 of the multiple channel housing units 410a are flush, and a guide vane 430 may be provided between two adjacent air outlets 411 on two adjacent channel housing units 410a.

[0180] Optionally, referring to Figure 29, in this embodiment, one end of the channel housing unit 410a is provided with a plurality of air outlets 411 spaced apart along the first side length direction of the air outlet 411. Between two adjacent air outlets 411 on the channel housing unit 410a, a guide 430 is provided arranged in a direction perpendicular to the first side length direction. The first side length direction of the air outlet 411 is the width direction or the conveying direction of the conveying device 300. The following description will take the first side length direction of the air outlet 411 as the width direction of the conveying device 300 as an example. The direction perpendicular to the first side length direction is the conveying direction of the conveying device 300. The guide 430 is arranged along the conveying direction of the conveying device 300 such that the intersection line of the top surface of the guide 430 and the guide surface 431 is parallel to the conveying direction of the conveying device 300. The guide 430 arranged along the conveying direction is defined as the first guide 430a. The first guide 430a is disposed on the channel housing unit 410a.

[0181] Optionally, referring to Figure 30, in this embodiment, multiple channel housing units 410a are arranged side by side, and the multiple channel housing units 410a are arranged along the second side length direction of the air outlet 411. Between two adjacent air outlets 411 on two adjacent channel housing units 410a, a guide 430 is arranged in a direction perpendicular to the second side length direction. The second side length direction of the air outlet 411 is perpendicular or approximately perpendicular to the first side length direction, so the second side length direction of the air outlet 411 is the conveying direction of the conveying device 300, and the direction perpendicular to the second side length direction is the width direction of the conveying device 300. The guide 430 is arranged along the width direction of the conveying device 300 such that the intersection line of the top surface of the guide 430 and the guide surface 431 is parallel to the width direction of the conveying device 300. The guide 430 arranged along the width direction of the conveying device 300 is defined below as the second guide 430b, and the second guide 430b is disposed between two channel housing units 410a.

[0182] Optionally, referring to Figures 29 and 30, in this embodiment, the channel housing unit 410a includes an air duct 413, a static pressure box 420, and a high-efficiency filter 414. The air duct 413 is connected to the static pressure box 420, and the high-efficiency filter 414 is installed at the end of the static pressure box 420 away from the air duct 413. The high-efficiency filter 414 is connected to the air outlet 411 on the channel housing unit 410a in a one-to-one correspondence. The air duct 413, the static pressure box 420, and the high-efficiency filter 414 are all installed inside the oven housing 100, and a fan 440 is installed on the housing 100. The upper end of the duct 413 is provided with an air inlet of the channel housing unit 410a. The fan 440 is connected to the upper end of the ventilation duct 413. The lower end of the duct 413 is connected to the upper end of the static pressure box 420. The lower end of the static pressure box 420 is connected to the high-efficiency filter 414. The part of the housing 100 connected to the high-efficiency filter 414 forms the air outlet 411. That is, the channel housing unit 410a includes part of the structure of the housing 100.

[0183] When the oven is working, the fan 440 draws in air, pressurizes it, and sends it to the static pressure box 420 through the air duct 413. After passing through the high-efficiency filter 414, the air is blown down from the air outlet 411. The air is guided by the inverted conical guide 430 between the two air outlets 411, which increases the airflow velocity between the two air outlets 411, avoids the generation of turbulence, and allows the airflow to be blown evenly onto the bottles on the conveyor device 300.

[0184] Optionally, referring to Figure 29, in this embodiment, a return air device 200 is installed on the lower side of the conveyor 300, and an air concentrator 460 is installed at the air inlet of the fan 440. An airflow circulation channel is formed inside the housing 100, and the housing 410, fan 440, return air device 200, and air concentrator 460 are all disposed in the airflow circulation channel. After the airflow blown out from the air outlet 411 processes the bottles on the mesh belt, it passes through the return air device 200 and the air concentrator 460 in sequence and returns to the air inlet of the fan 440, and then blows the next batch of bottles after passing through the fan 440.

[0185] The air guide 430 is installed between the two air outlets 411, that is, the air guide 430 is installed on the housing 100. The specific installation method of the air guide 430 on the housing 100 is not particularly limited. Optionally, referring to Figures 29 to 31, in this embodiment, the air guide 430 is fixed to the housing 410 by a screw connector. The surface of the air guide 430 near the air outlet 411 has a threaded hole 432 that engages with the screw connector. The top surface of the air guide 430 also has a threaded hole 432. The air guide 430 is fixed between the two air outlets 411 and to the housing 100 by a screw connector. The screw connector can be a screw, etc., and the threaded holes 432 are typically provided in multiple intervals along the extension direction of the air guide 430.

[0186] As described above, a static pressure chamber 420 is provided inside the oven 1000 and above the conveying device 300. Optionally, referring to Figures 32, 33, and 36, in this embodiment, the static pressure chamber 420 includes a main body 421 and a flow guide 424. The main body 421 forms a channel, with a chamber inlet 4211 at one end and a chamber outlet 4212 at the other end. The channel connects the chamber inlet 4211 and the chamber outlet 4212. The flow guide 424 is at least partially located within the channel and covers the chamber inlet 4211. The flow guide 424 includes a central region 4241 and a peripheral region 4242. The central region 4241 has a plurality of first ventilation holes 4243, and the peripheral region 4242 has a plurality of second ventilation holes 4244. The average diameter of the plurality of first ventilation holes 4243 is greater than the average diameter of the plurality of second ventilation holes 4244.

[0187] Specifically, the guide section 424 is hood-shaped, allowing it to cover the inside of the box inlet 4211. Airflow can enter the channel of the main body 421 from the box inlet 4211, and after passing through the guide section 424, it can exit the main body 421 from the box outlet 4212. The box inlet 4211 and the box outlet 4212 are usually arranged opposite each other with a gap. Hereinafter, the gap direction between the box inlet 4211 and the box outlet 4212 is defined as vertical, and the box inlet 4211 faces upward, while the box outlet 4212 faces downward. The flow guide 424 can guide the airflow entering the main body 421 from the box inlet 4211. The flow guide 424 includes a central region 4241 and a peripheral region 4242. The central region 4241 is usually the area on the flow guide 424 that is vertically opposite to the center of the box inlet 4211, while the peripheral region 4242 is the area on the flow guide 424 located outside the central region 4241. The central region 4241 is closer to the center of the box inlet 4211 in the horizontal direction than the peripheral region 4242.

[0188] The central region 4241 is provided with a plurality of first ventilation holes 4243 through which airflow passes. The diameters of the plurality of first ventilation holes 4243 in the central region 4241 may be equal or not completely equal, and the average diameter of the plurality of first ventilation holes 4243 is the average of the diameters of all first ventilation holes 4243 in the central region 4241. Similarly, the peripheral region 4242 is provided with a plurality of second ventilation holes 4244 through which airflow passes. The diameters of the plurality of second ventilation holes 4244 in the peripheral region 4242 may be equal or not completely equal, and the average diameter of the plurality of second ventilation holes 4244 is the average of the diameters of all second ventilation holes 4244 in the peripheral region 4242.

[0189] The airflow entering from the inlet 4211 typically accelerates closer to the center of the inlet 4211. Therefore, the airflow velocity towards the central region 4241 is greater than that towards the peripheral region 4242. The design of the average diameter of the multiple first ventilation holes 4243 within the central region 4241 being larger than the average diameter of the multiple second ventilation holes 4244 within the peripheral region 4242 ensures that the airflow velocity through the central region 4241 is equal to or approximately equal to the airflow velocity through the peripheral region 4242. This arrangement, with different opening sizes in different areas of the guide section 424, provides different guiding effects for the airflow at different locations, ensuring a uniform airflow distribution after passing through the static pressure box 420 and preventing turbulence.

[0190] The flow guide 424 is hood-shaped, and the specific style of the flow guide 424 can be set according to the actual situation. Optionally, please refer to Figures 32, 33 and 36. In this embodiment, the peripheral area 4242 includes multiple flow guide mesh inclined plates 422, and multiple second ventilation holes 4244 are provided on the multiple flow guide mesh inclined plates 422. The multiple flow guide mesh inclined plates 422 are connected sequentially along the circumference of the box inlet 4211. The same end of the multiple flow guide mesh inclined plates 422 is connected to the main body 421. The multiple flow guide mesh inclined plates 422 are gradually arranged closer to each other in the direction from the box inlet 4211 to the box outlet 4212. Multiple flow guide mesh inclined plates 422 are inclined from bottom to top in a direction away from the center of the box inlet 4211. The multiple flow guide mesh inclined plates 422 are arranged in a cylindrical shape around the box inlet 4211. The upper ends of the multiple flow guide mesh inclined plates 422 are connected to the main body 421 and are located on the periphery of the box inlet 4211. Each flow guide mesh inclined plate 422 is provided with at least two second ventilation holes 4244 arranged in an array. The following will be described using the peripheral area 4242 of the flow guide part 424 composed of multiple flow guide mesh inclined plates 422 as an example.

[0191] Further, please refer to Figures 32, 33, and 36. In this embodiment, the central region 4241 includes a perforated plate 423 facing the box inlet 4211. The perforated plate 423 is covered by multiple perforated inclined plates 422 at the end away from the box inlet 4211. Multiple first ventilation holes 4243 are provided on the perforated plate 423. The perforated plate 423 is perpendicular or approximately perpendicular to the vertical direction. The perforated plate 423 covers the lower ends of the multiple perforated inclined plates 422. The multiple perforated inclined plates 422 and the perforated plate 423 are connected together and form a certain angle to facilitate the guidance of airflow entering the main body 421. The following description will take the central region 4241, in which the perforated plate 423 forms the flow guide section 424, as an example.

[0192] The flow guiding mesh plate 423 and the multiple flow guiding mesh inclined plates 422 can be fixedly connected together by welding or other means to form a cover-shaped flow guiding part 424; the flow guiding mesh plate 423 and the multiple flow guiding mesh inclined plates 422 can also be integrally formed to form a cover-shaped flow guiding part 424.

[0193] Since the perforated plate 423 is located in the central region 4241, while multiple perforated plates 423 are located in the peripheral region 4242, the airflow velocity blowing onto the perforated plate 423 is greater than the airflow velocity blowing onto the inclined plates 422. Furthermore, the average diameter of the multiple first ventilation holes 4243 is designed to be larger than the average diameter of the multiple second ventilation holes 4244, so that the opening size of the perforated plate 423 is larger than the opening size of the inclined plates 422. This ensures that the airflow velocity passing through the perforated plate 423 is equal to or approximately equal to the airflow velocity passing through the inclined plates 422. Thus, the perforated plates at different positions (i.e., the multiple inclined plates 422 and the perforated plate 423) play different guiding roles on the airflow at different positions, thereby ensuring that the airflow becomes a uniformly distributed airflow after passing through the static pressure box 420, avoiding the generation of turbulence.

[0194] As described above, the diameters of the multiple first ventilation holes 4243 within the central region 4241 may be equal or not completely equal. Optionally, referring to Figures 34 to 36, in this embodiment, the diameters of the multiple first ventilation holes 4243 are equal. That is, the diameters of all the first ventilation holes 4243 on the flow guide mesh plate 423 are equal, thus making the processing difficulty of the flow guide mesh plate 423 relatively low.

[0195] Optionally, referring to Figures 34 to 36, in this embodiment, the diameters of the plurality of first ventilation holes 4243 and / or the plurality of second ventilation holes 4244 all do not exceed 5 mm. Compared with the larger opening size of the perforated plate, the smaller opening size of the perforated plate results in better uniformity of airflow passing through the perforated plate. For example, in this embodiment, the opening size of the guide mesh plate 423 is 4 mm, and the opening size of the plurality of guide mesh inclined plates 422 is 1.5 mm. The diameters of all the second ventilation holes 4244 on any one of the guide mesh inclined plates 422 can be equal or not completely equal. The following description will take the case where the diameters of all the second ventilation holes 4244 on any one of the guide mesh inclined plates 422 are equal as an example. The opening size of the multiple flow guiding mesh inclined plates 422 can be designed based on the simulation results. For example, the opening size of the multiple flow guiding mesh inclined plates 422 can be designed to be equal; the opening size of the multiple flow guiding mesh inclined plates 422 can be designed to be unequal; or some of the flow guiding mesh inclined plates 422 can be designed to have equal opening sizes.

[0196] Optionally, referring to Figures 34 to 36, in this embodiment, the diameters of the plurality of second ventilation holes 4244 are equal. All the second ventilation holes 4244 on each guide mesh inclined plate 422 have the same diameter, and the diameters of the second ventilation holes 4244 on any two guide mesh inclined plates 422 are equal, thus reducing the processing difficulty of the plurality of guide mesh inclined plates 422. For example, in this embodiment, the opening size of the plurality of guide mesh inclined plates 422 is 1.5mm.

[0197] Optionally, referring to Figures 33, 34, and 36, in this embodiment, the spacing between the plurality of first ventilation holes 4243 gradually increases from the edge to the center of the central region 4241. The opening spacing of the guide mesh plate 423 gradually increases from the edge to the center of the guide mesh plate 423. The center of the guide mesh plate 423 is usually vertically opposite to the center of the box inlet 4211. The airflow entering from the box inlet 4211 generally has a larger air volume as it gets closer to the center of the box inlet 4211. By designing the opening spacing of the guide mesh plate 423 to gradually increase towards the center, the air volume of the airflow passing through different positions of the guide mesh plate 423 can be equal or approximately equal.

[0198] Similarly, referring to Figures 34 to 36, in this embodiment, the average spacing between the plurality of first ventilation holes 4243 is greater than the average spacing between the plurality of second ventilation holes 4244. The average spacing between the plurality of first ventilation holes 4243 in the central region 4241 is greater than the average spacing between the plurality of second ventilation holes 4244 in the peripheral region 4242. That is, the opening spacing of the guide mesh plate 423 is greater than the opening spacing of the plurality of guide mesh inclined plates 422, and the opening spacing at the minimum point of the guide mesh plate 423 is greater than the opening spacing of the plurality of guide mesh inclined plates 422. The design of the opening spacing of the guide mesh plate 423 being greater than the opening spacing of the plurality of guide mesh inclined plates 422 ensures that the airflow through the guide mesh plate 423 is equal to or approximately equal to the airflow through the plurality of guide mesh inclined plates 422.

[0199] The spacing between the second ventilation holes 4244 on any one of the multiple flow guide mesh inclined plates 422 can be equal; the spacing between the second ventilation holes 4244 on any one of the flow guide mesh inclined plates 422 can also gradually decrease in the direction away from the central region 4241. The opening spacing between any two flow guide mesh inclined plates 422 can be designed to be equal or unequal based on simulation results, which will be elaborated below.

[0200] The center of the flow-guiding mesh plate 423 is typically vertically aligned with the center of the box inlet 4211, and at least a portion of the box inlet 4211 is also typically vertically aligned with the flow-guiding mesh plate 423. Optionally, referring to Figures 32, 34, and 35, in this embodiment, at least a portion of the box inlet 4211 is vertically aligned with the flow-guiding mesh plate 423 in the direction from the box inlet 4211 to the box outlet 4212. The size and positional relationship between the box inlet 4211 and the flow-guiding mesh plate 423 can be designed based on simulation results. For example, the entire box inlet 4211 can be designed to be vertically aligned with the flow-guiding mesh plate 423; alternatively, a portion of the box inlet 4211 can be designed to be vertically aligned with the flow-guiding mesh plate 423, while the remaining portion of the box inlet 4211 is vertically aligned with the flow-guiding mesh inclined plate 422.

[0201] Multiple guide mesh inclined plates 422 and guide mesh flat plates 423 are disposed within the main body 421. Optionally, referring to Figures 32 and 33, in this embodiment, the main body 421 includes a gradually expanding section 4213. The gradually expanding section 4213 is gradually expanded outward in the direction from the box inlet 4211 to the box outlet 4212. The guide mesh flat plate 423 and multiple guide mesh inclined plates 422 are all disposed within the gradually expanding section 4213. The gradually expanding section 4213 is gradually expanded outward from top to bottom. After the airflow passes through the multiple guide mesh inclined plates 422 and guide mesh flat plates 423, it enters the gradually expanding section 4213. The gradually expanding section 4213 can also guide the airflow, thereby ensuring that the airflow can be blown out evenly from the box outlet 4212.

[0202] Further, referring to Figures 32 and 33, in this embodiment, the expanding section 4213 includes a top plate 4214 and side plates 4215. The top plate 4214 is provided with a box inlet 4211, and the side plates 4215 are connected to the top plate 4214. Multiple side plates 4215 are provided corresponding to multiple flow guide mesh inclined plates 422, and these side plates 4215 are sequentially connected along the circumference of the top plate 4214. Each flow guide mesh inclined plate 422 connects to the connection point between a corresponding side plate 4215 and the top plate 4214. The multiple side plates 4215 and the multiple flow guide mesh inclined plates 422 are arranged in a one-to-one correspondence. The upper end of each side plate 4215 is connected to the upper end of a corresponding flow guide mesh inclined plate 422 and a corresponding edge of the top plate 4214. Each side plate 4215 can guide the airflow passing through its corresponding flow guide mesh inclined plate 422.

[0203] The specific number of flow guiding mesh inclined plates 422 can be set according to the actual situation. Optionally, referring to Figures 33 and 36, in this embodiment, there are four flow guiding mesh inclined plates 422, which include a first flow guiding mesh inclined plate 422a, a second flow guiding mesh inclined plate 422b, a third flow guiding mesh inclined plate 422c, and a fourth flow guiding mesh inclined plate 422d connected in sequence. The static pressure box 420 is provided with five mesh plates, namely the first flow guiding mesh inclined plate 422a, the second flow guiding mesh inclined plate 422b, the third flow guiding mesh inclined plate 422c, the fourth flow guiding mesh inclined plate 422d, and the flow guiding mesh plate 423. The flow guiding mesh plate 423 is a rectangular or similar square mesh plate, while the first flow guiding mesh inclined plate 422a, the second flow guiding mesh inclined plate 422b, the third flow guiding mesh inclined plate 422c, and the fourth flow guiding mesh inclined plate 422d are all trapezoidal mesh plates.

[0204] The first flow guiding mesh inclined plate 422a, the second flow guiding mesh inclined plate 422b, the third flow guiding mesh inclined plate 422c, the fourth flow guiding mesh inclined plate 422d, and the flow guiding mesh plate 423 can be fixedly connected together by welding. Referring to Figure 34, when welding the first flow guiding mesh inclined plate 422a, the third flow guiding mesh inclined plate 422c, and the flow guiding mesh plate 423, the three form an angle during welding. The tilt angles of the multiple flow guiding mesh inclined plates 422 can be designed based on simulation results. For example, the tilt angles of the multiple flow guiding mesh inclined plates 422 can be designed to be equal; alternatively, the tilt angles of at least two of the multiple flow guiding mesh inclined plates 422 can be designed to be different.

[0205] Optionally, referring to Figures 33 to 35, in this embodiment, the tilt angles of the multiple flow guiding mesh inclined plates 422 are not equal. For example, the tilt angle of the first flow guiding mesh inclined plate 422a is 21.63°, the tilt angle of the second flow guiding mesh inclined plate 422b is 32.47°, the tilt angle of the third flow guiding mesh inclined plate 422c is 60.26°, and the tilt angle of the fourth flow guiding mesh inclined plate 422d is 45.29°.

[0206] The spacing between the openings of the flow-guiding mesh plate 423 is greater than the spacing between the openings of the multiple flow-guiding mesh inclined plates 422. The spacing between any two flow-guiding mesh inclined plates 422 can be designed to be equal or unequal based on simulation results. Optionally, referring to Figures 33, 34, and 36, in this embodiment, the spacing between the second ventilation holes 4244 on the first flow-guiding mesh inclined plate 422 is equal to the spacing between the second ventilation holes 4244 on the third flow-guiding mesh inclined plate 422. For example, the spacing between the openings of the first flow-guiding mesh inclined plate 422a and the third flow-guiding mesh inclined plate 422c are both 8 mm.

[0207] Optionally, referring to Figures 33, 35, and 36, in this embodiment, the spacing between the second ventilation holes 4244 on the second guide mesh inclined plate 422 is equal to the spacing between the second ventilation holes 4244 on the fourth guide mesh inclined plate 422. For example, the opening spacing of the second guide mesh inclined plate 422b and the opening spacing of the fourth guide mesh inclined plate 422d are both 9mm.

[0208] Optionally, referring to Figures 34 to 36, in this embodiment, the spacing between the second ventilation holes 4244 on the second guide mesh inclined plate 422 is not equal to the spacing between the second ventilation holes 4244 on the first guide mesh inclined plate 422. For example, the opening spacing of the first guide mesh inclined plate 422a is 8mm, while the opening spacing of the second guide mesh inclined plate 422b is 9mm. The static pressure box 420 is designed with five mesh plates with different opening spacings, so that the five mesh plates can play different guiding roles for the airflow at different positions according to the airflow volume at different positions.

[0209] The static pressure box 420 reduces the opening size of the perforated plate, making the airflow more uniform as it passes through the perforated plate. Five perforated plates are welded together, and the optimal data results are obtained through simulation. The optimal angle is set to facilitate airflow guidance. By setting different opening sizes and hole spacings for the perforated plates at different positions, different airflow guidance effects can be achieved at different positions, thus improving the uniformity of airflow.

[0210] A return air device 200 is provided inside the oven 1000 and below the conveyor 300. Optionally, as shown in Figures 37, 39 and 40, in this embodiment, the return air device 200 includes a return air box 210 and a baffle 220. The return air box 210 is provided with a box inlet 211 and a box outlet 212. An airflow return air channel 213 is formed inside the return air box 210, which connects the box outlet 212 and the box inlet 211. The baffle 220 is movably and adjustablely installed at the box outlet 212 so as to adjust the size of the box outlet 212.

[0211] Specifically, the return air device 200 connects to the airflow circulation channel within the module. After passing through the conveying device, the airflow within the module enters the airflow return channel 213 from the box inlet 211 of the return air device 200, and then flows back into the airflow circulation channel from the box outlet 212 of the return air device 200. Since the airflow passing through the conveying device 300 is typically blown downwards towards the return air device 200, the box inlet 211 of the return air box 210 is typically positioned upwards. Optionally, referring to Figures 37 and 38, in this embodiment, the upper box wall of the return air box 210 is open, forming the box inlet 211. This arrangement of the box inlet 211 facilitates the airflow entering the airflow return channel 213 from the box inlet 211.

[0212] The return air box 210 is typically placed at the bottom of the module. The lower wall of the return air box 210 is flush with the module's housing. Therefore, the box outlet 212 of the return air box 210 is usually located on the side wall of the return air box 210, and the orientation of the box outlet 212 is horizontal. Optionally, referring to Figures 37 and 38, in this embodiment, the box outlet 212 is located on one side wall of the return air box 210 along its length, and the orientation of the box outlet 212 is along the length of the return air box 210. The following description will use the example of the box outlet 212 being located on one side wall of the return air box 210 along its length.

[0213] An adjustable baffle 220 is installed at the outlet 212 of the return air box 210. Increasing the baffle 220 reduces the speed at which airflow enters the return air channel 213 within the module, thus achieving a pressure-retaining effect within the module. Furthermore, during the adjustment of the baffle 220, the area of ​​the baffle 220 blocking the outlet 212 along the length of the return air box 210 changes. This allows for adjustment of the size of the outlet 212, thereby adjusting the size of the return air channel 213. Therefore, the size of the return air channel 213 can be adjusted as needed via the baffle 220 to control the airflow circulation speed, thereby stabilizing the pressure difference within the module. This achieves pressure balance within the module without blocking the fresh air intake. The return air device 200 can quickly and reliably adjust the pressure difference balance within the module, achieving a pressure-retaining, slow-flowing, and stable pressure effect. The baffle 220 can be a perforated plate, for example, as shown in Figures 37, 39, and 40. In this embodiment, the baffle 220 is a flow-equalizing perforated plate.

[0214] The size of the airflow return channel 213 can be adjusted by the movable baffle 220. The movable baffle 220 can be configured in various ways; for example, it can slide horizontally or vertically; or it can rotate along an axis in the horizontal or vertical direction. Optionally, referring to Figures 37, 39, and 40, in this embodiment, one end of the baffle 220 is rotatably connected to the bottom wall of the airflow return channel 213 along its width direction.

[0215] Specifically, the width of the airflow return channel 213 is typically the same as the width of the return air box 210, and the bottom wall of the airflow return channel 213 is the channel wall that is vertically opposite to the box inlet 211. The size of the airflow return channel 213 can be adjusted by rotating the angle of the adjusting baffle 220. This rotational adjustment method makes the size adjustment of the airflow return channel 213 more convenient, reliable, and precise, and the operation is also relatively simple.

[0216] A rotation adjustment structure is provided between the baffle 220 and the channel wall of the airflow return channel 213. The rotation adjustment structure can be configured in various ways, such as a snap-fit ​​connection or a gear and rack connection. Optionally, referring to Figures 37, 39, and 40, in this embodiment, the baffle 220 is provided with a connecting arm 230. The connecting arm 230 is fixedly installed on the channel wall of the airflow return channel 213 via a first screw connector 214. The connecting arm 230 is provided with a sliding groove 231 through which the first screw connector 214 passes, and the sliding groove 231 extends along the rotation direction of the baffle 220.

[0217] Specifically, the connecting arm 230 is locked and fixed to the channel wall of the airflow return channel 213 by the first screw connector 214, and the connecting arm 230 is provided with a sliding groove 231 extending through the width direction of the return air box 210. The sliding groove 231 is an arc-shaped groove extending along the rotation direction of the baffle 220, and the first screw connector 214 can slide relative to the connecting arm 230 along the sliding groove 231. Through the cooperation of the first screw connector 214 and the sliding groove 231, the rotation adjustment of the baffle 220 can be realized, and the baffle 220 can also be guided by rotation.

[0218] Further, please refer to Figures 37, 39 and 40. In this embodiment, the first screw 214 is a screw fixed to the channel wall of the airflow return channel 213. A nut 218 is installed on the first screw 214. The nut 218 is located on the side of the connecting arm 230 away from the channel wall of the airflow return channel 213.

[0219] Specifically, the first screw connector 214 can be fixed to the channel wall of the airflow return channel 213 by welding or other means. After loosening the nut 218 on the first screw connector 214, the angle of the baffle 220 can be rotated and adjusted. After adjusting the angle of the baffle 220, the nut 218 is tightened so that the connecting arm 230 is clamped and fixed between the nut 218 and the channel wall of the airflow return channel 213, thus fixing the baffle 220.

[0220] The connecting arm 230 is typically arc-shaped, extending along the rotation direction of the baffle 220. This design minimizes interference between the connecting arm 230 and the channel wall of the airflow return channel 213 during the rotation adjustment of the baffle 220. (See Figures 39 and 40). An angle scale can also be provided on the connecting arm 230, facilitating precise adjustment of the baffle 220's angle based on these scale markings. Alternatively, (see Figures 37, 39, and 40), in this embodiment, the connecting arm 230 is a dial extending along the rotation direction of the baffle 220. One end of the dial can be fixedly connected to the baffle 220 by welding or other means. A groove 231 is provided in the center of the dial. An angle scale is provided on the surface of the dial away from the channel wall of the airflow return channel 213, positioned at the opening of the groove 231. This dial design facilitates adjustment of the baffle 220's angle.

[0221] The connecting arm 230 can be installed on the inner side or the outer side of the airflow return channel 213. Optionally, referring to Figures 37, 39 and 40, in this embodiment, the connecting arm 230 is fixedly installed on the inner channel wall of the airflow return channel 213 by the first screw connector 214, that is, the connecting arm 230 is installed on the inner side of the airflow return channel 213.

[0222] One or more connecting arms 230 may be provided on the baffle 220. Optionally, as shown in Figures 37, 39, and 40, in this embodiment, two connecting arms 230 are respectively provided at both ends of the baffle 220 in the width direction. The two connecting arms 230 are respectively installed on the two channel side walls of the airflow return channel 213 in the width direction. The baffle 220 is rotatably connected to the channel wall of the airflow return channel 213 through the two connecting arms 230. In this way, when the baffle 220 is rotated and adjusted, the force on the baffle 220 will be more balanced, which is conducive to the smooth rotation and adjustment of the angle of the baffle 220. Furthermore, two first screw connectors 214 are respectively fixed on the two channel side walls of the airflow return channel 213 in the width direction. At least one of the two first screw connectors 214 is equipped with a nut 218. That is, two nuts 218 can be installed on each of the two first screw connectors 214; or only one first screw connector 214 is equipped with a nut 218, and the other first screw connector 214 is not equipped with a nut 218.

[0223] Optionally, referring to Figures 37, 39, and 40, in this embodiment, a hinge 260 is provided between the baffle 220 and the channel wall of the airflow return channel 213. The two ends of the hinge 260 are respectively connected to the surface of the baffle 220 near the box outlet 212 and the bottom wall of the inner channel of the airflow return channel 213. The two ends of the hinge 260 can be fixedly connected to the baffle 220 and the bottom wall of the airflow return channel 213 by welding or screw fasteners. For example, both ends of the hinge 260 are fixedly connected to the baffle 220 and the bottom wall of the airflow return channel 213 by countersunk screws 270.

[0224] Optionally, referring to Figures 37, 39, and 40, in this embodiment, a fixing block 240 is provided on the inner channel wall at the box outlet 212. The fixing block 240 is equipped with a detachable connector for detachably connecting to the baffle 220 in a vertical position. When the baffle 220 is in a vertical position, its angle is 0°, and the detachable connector on the fixing block 240 can be detachably connected to the baffle 220, thereby allowing the fixing block 240 to fix the baffle 220 at 0°. When the angle of the baffle 220 is not 0°, the locking nut 218 can fix the baffle 220 at the desired angle position.

[0225] The fixing block 240 can be fixed to the inner channel wall of the airflow return channel 213 by means of welding or other methods. The fixing block 240 can be fixed to the inner channel side wall or the inner channel bottom wall of the airflow return channel 213. Optionally, referring to Figures 39 and 40, in this embodiment, the fixing block 240 is fixed to the inner channel bottom wall of the airflow return channel 213. Since the first screw connector 214 is fixed on the inner channel side wall of the airflow return channel 213, fixing the fixing block 240 to the inner channel bottom wall of the airflow return channel 213, and the fixing block 240 is close to the middle of the baffle 220, will not cause interference between the fixing block 240 and the connecting arm 230.

[0226] The specific shape and style of the fixing block 240 can be set according to the actual situation. Optionally, please refer to Figures 37, 39 and 40. In this embodiment, the fixing block 240 is an L-shaped bend. The fixing block 240 includes a first plate and a second plate. The first plate faces the box inlet 211 and is fixed to the bottom wall of the inner channel of the airflow return channel 213. The second plate extends upward from the end of the first plate near the box outlet 212 and faces the box outlet 212. A detachable connector is provided on the second plate.

[0227] Optionally, referring to Figures 37 and 39, in this embodiment, when the baffle 220 is in a vertical state, the surface of the baffle 220 near the box outlet 212 abuts against the fixing block 240. When the baffle 220 is rotated to the 0° position, the baffle 220 abuts against the second plate portion of the fixing block 240, thereby achieving rotational positioning of the baffle 220 to the 0° position.

[0228] Optionally, referring to Figures 39 and 40, in this embodiment, the detachable connector includes a second threaded connector 241 and a locking nut that threadedly engages with the second threaded connector 241. The fixing block 240 has a pre-drilled mounting hole (not shown in the figures) corresponding to the second threaded connector 241. When the baffle 220 is at the 0° position, the tail of the second threaded connector 241 passes through the baffle 220, and then the locking nut is installed on the second threaded connector 241. Thus, the baffle 220 at the 0° position can be fixed by the second threaded connector 241 and the locking nut.

[0229] Optionally, referring to Figures 37, 38 and 40, in this embodiment, a first partition 215 facing the box inlet 211 is provided inside the return air box 210, so as to form multiple airflow return channels 213 at intervals inside the return air box 210 through the first partition 215. Multiple box outlets 212 are provided on the same side wall of the return air box 210, and the multiple box outlets 212 are connected to the multiple airflow return channels 213 in a one-to-one correspondence. Multiple baffles 220 are installed at the multiple box outlets 212 respectively.

[0230] Specifically, the return air box 210 is provided with one or more upward-facing first partitions 215 to form multiple airflow return channels 213 at vertical intervals within the return air box 210, and the ends of the multiple airflow return channels 213 are flush with the box outlets 212. One side wall of the return air box 210 is open in the length direction, and one end of the first partition 215 is flush with the opening to divide the opening into multiple box outlets 212.

[0231] When multiple first partitions 215 are spaced apart within the return air box 210 along a direction away from the box inlet 211, the dimensions of the multiple first partitions 215 in the direction away from the box outlet 212 gradually increase along the direction away from the box inlet 211. The direction away from the box inlet 211 is from top to bottom, and the direction away from the box outlet 212 is the length direction of the return air box 210. The dimension of the first partition 215 in the direction away from the box outlet 212 is the length of the first partition 215. The ends of the multiple first partitions 215 near the box outlet 212 are flush, and the lengths of the multiple first partitions 215 gradually increase from top to top, thereby enabling the ends of the multiple airflow return channels 213 away from the box outlet 212 to communicate with the box inlet 211.

[0232] The specific number of first partitions 215 can be set according to the actual situation. For example, please refer to Figures 37 and 38. In this embodiment, there are three first partitions 215, and the three first partitions 215 form four airflow return channels 213 at intervals within the return air box 210. The following description will take the case where there are three first partitions 215 within the return air box 210 as an example. The four airflow return channels 213 are arranged from top to bottom as the first layer airflow return channel, the second layer airflow return channel, the third layer airflow return channel, and the fourth layer airflow return channel. The lengths of the first layer airflow return channel, the second layer airflow return channel, the third layer airflow return channel, and the fourth layer airflow return channel decrease sequentially. The lengths of the first layer airflow return channel, the second layer airflow return channel, and the third layer airflow return channel are the lengths of the three first partitions 215, and the length of the fourth layer airflow return channel is the length of the return air box 210.

[0233] The difference in size between any two adjacent airflow return channels 213 in the direction away from the box outlet 212 is the interlayer spacing. Multiple airflow return channels 213 form multiple interlayer spacings. The length difference between the first and second airflow return channels, the length difference between the second and third airflow return channels, and the length difference between the third and fourth airflow return channels are all interlayer spacings. These three interlayer spacings can be equal, unequal, or not all equal.

[0234] Optionally, in this embodiment, the difference in size between any two adjacent airflow return channels 213 in the direction away from the box outlet 212 is the interlayer spacing, and the multiple airflow return channels 213 form multiple interlayer spacings, all of which are equal. Similarly, the heights of the multiple airflow return channels 213 can be equal, or the heights of the multiple airflow return channels 213 can be unequal or not completely equal.

[0235] Optionally, referring to Figures 37 and 38, in this embodiment, a second partition 216 is provided on the surface of the first partition 215 near the box inlet 211, facing the box outlet 212. The second partition 216 is located at the end of the first partition 215 away from the box outlet 212, and the end of the second partition 216 away from the first partition 215 is flush with the box inlet 211. The lower end of the second partition 216 is fixedly connected to the end of the first partition 215 away from the box outlet 212, and the upper end of the second partition 216 is flush with the box inlet 211. The second partition 216, the first partition 215, and the return air box 210 can be fixedly connected by welding or other means, so that the return air box 210 is formed by multi-layer welding. The height and length of each layer of airflow return air channel 213 are different, and the layer spacing is consistent. The layer spacing and the size of each layer baffle 220 are the optimal values ​​obtained through airflow simulation analysis experiments.

[0236] Each layer of the return air box 210 has a baffle 220 installed at its outlet 212. Optionally, as shown in Figures 37, 39, and 40, in this embodiment, the return air device 200 also includes a connecting rod 250. Multiple baffles 220 are connected to the connecting rod 250, allowing the connecting rod 250 to drive the multiple baffles 220 to rotate synchronously. The connecting rod 250 is installed at least one end of each baffle 220 in the width direction, and each baffle 220 is rotatably connected to the connecting rod 250 along its axis in the width direction. Connecting the baffles 220 of each layer via the connecting rod 250 ensures that the adjustment angle of each baffle 220 remains consistent and can be adjusted simultaneously, resulting in simple operation and high precision.

[0237] Optionally, referring to Figures 37, 39, and 40, in this embodiment, the connecting rod 250 is provided with multiple screws (not shown in the figures) corresponding to multiple baffles 220, and each screw is rotatably connected to a corresponding baffle 220. The multiple screws can be fixed to the connecting rod 250 by welding or other methods. After connecting the multiple screws on the connecting rod 250 to the multiple baffles 220, a nut is used to lock each screw, thereby forming a linkage mechanism that enables synchronous movement of the multiple baffles 220.

[0238] Optionally, referring to Figures 38 and 40, in this embodiment, the return air device 200 is provided with a connecting arm 230, a first screw connector 214, a fixing block 240, and a hinge 260 for the uppermost baffle 220 among the multiple baffles 220. The return air device 200 is not provided with a connecting arm 230, a first screw connector 214, a fixing block 240, and a hinge 260 for the other baffles 220.

[0239] Optionally, referring to Figure 37, in this embodiment, a pull-out portion 217 is provided on the side wall of the return air box 210 away from the box inlet 211. The pull-out portion 217 facilitates pushing the return air device 200 into the bottom of the module and pulling it out of the module. The pull-out portion 217 can be a handle, a boss, or a perforation, etc.

[0240] The working principle of the 1000 oven can be summarized as follows:

[0241] After the preheating module 130, heating module 140, and cooling module 150 are equipped with the high-efficiency filter 414, the insulation door 600 is placed at the opening of the mounting box of the high-efficiency filter 414 and locked to the box 100 to block the opening. When installing the spray device 800, the air and water inlets of the spray device 800 can be accurately aligned with the mesh belt 310 through the clear marking 821, which facilitates effective cleaning of the mesh belt 310 during the CIP process.

[0242] Once everything is ready and the oven 1000 starts operating, the conveyor belt 310 of the conveyor device 300 transports bottles from the upstream bottle washing machine sequentially through the preheating module 130, heating module 140, and cooling module 150. A chain prevents the first batch of bottles from tipping over. When the proximity sensor 730 in front of the lifting gate 720 detects the chain, it sends a signal to the controller, which then controls the lifting gate 720 to rise, allowing the bottles to move forward in an orderly manner. Simultaneously, the airflow from the fan 440 becomes evenly distributed after passing through the static pressure chamber 420. After passing through the high-efficiency filter 414, it acts evenly on the bottles. Because an inverted conical guide 430 is installed between the two high-efficiency filters 414, the airflow after passing through the high-efficiency filters 414 can flow smoothly and evenly downwards without generating turbulence. The return air device 200 can control the airflow circulation speed by adjusting the angle of the baffle 220, thereby stabilizing the pressure difference within the chamber and achieving a pressure-stabilizing effect through slow flow. During production, the clean air discharged from the cooling module 150 is recycled by the preheating module 130 through the clean air recovery pipe 110, thereby reducing the amount of air taken from the clean room by the preheating module 130 and stabilizing the indoor pressure difference.

[0243] When the SIP (Sterilization In Place) function of the cooling module 150 is performed, the cold point heating device 510 comes into play. While the heating element of the cooling module 150 itself is heating and sterilizing, the heating plate 517 inside the cold point heating device 510 is heated synchronously under the control of the controller, so that all points in the entire cooling module 150 chamber are effectively sterilized and depyrogenated. Temperature probes are designed at the cold point locations to monitor the cold point temperature in real time and ensure that the gas temperature meets the sterilization and depyrogenation requirements.

[0244] After production is completed, the bottle pusher 900, along with the mesh belt 310, successfully pushes the last batch of bottles to the filling turntable. The controller controls the mesh belt reversal drive module 340 to drive the mesh belt 310 to reverse, sending the bottle pusher 900 back to the preheating module 130, and then taking them out from the opening of the preheating module 130.

[0245] The oven 1000 features a simple structure, reliable operation, reduced energy consumption, minimized heat transfer, low surface temperature, and safe operation. It eliminates cold spots, ensuring satisfactory sterilization and pyrogen removal. The static pressure chamber 420 and return air device 200 promote uniform airflow within the tunnel. The conveyor device 300 facilitates the placement and removal of the bottle pusher 900 and verification instruments without affecting other equipment or subsequent production. It allows for the recycling of clean air, saving costs and reducing room pressure variations. The unique lifting gate control method and the reducer installation structure, independent of assembly precision, result in a simple and reliable design. The markings 821 on the spray device 800 easily indicate the direction of the air and water holes, contributing to its simple structure, low cost, and high practicality.

[0246] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A cooling module, wherein a cooling chamber is provided within the cooling module, a communication position is formed on the cooling module connecting the cooling chamber to the outside, and a cold point heating device is provided on the cooling module, the cold point heating device being positioned close to the communication position, so as to heat the area of ​​the cooling chamber close to the communication position through the cold point heating device.

2. The cooling module as described in claim 1, wherein, The cooling module has a module outlet located on its housing at the communication position, which connects the cooling chamber to the outside.

3. The cooling module as described in claim 2, wherein, The cold point heating device is arranged in the shape of a door and can be movably installed at the module outlet to open and close the module outlet.

4. The cooling module as described in claim 3, wherein, The cold spot heating device includes a door body and a heater. The door body is located at the module outlet, and the heater is located on the door body.

5. The cooling module as described in claim 4, wherein, The door body is filled with thermal insulation material.

6. The cooling module as described in claim 4, wherein, The door body includes a heated door body and a cover plate. The heated door body has an installation groove on its surface near the cooling chamber. The cover plate is located on the side of the heated door body near the cooling chamber and is disposed in a sealing manner at the opening of the installation groove. The heater is located in the installation groove and is disposed on the cover plate.

7. The cooling module as described in claim 2, wherein, An airtight door module is provided at the outlet of the module, and the airtight door module includes an airtight door for opening and closing the outlet of the module.

8. The cooling module as described in claim 7, wherein, The cold point heating device is the airtight door.

9. The cooling module as described in claim 7, wherein, The airtight door module also includes an airtight frame and a door drive mechanism. The airtight frame is disposed on the housing of the cooling module, and the airtight door is movably disposed on the airtight frame. The door drive mechanism is dynamically coupled to the airtight door so as to drive the airtight door to move.

10. The cooling module according to any one of claims 1-9, wherein, The cooling module is equipped with a chamber heating device for heating the cooling chamber. The chamber heating device and the communicating position are respectively located on two adjacent side walls of the cooling module housing.

11. The cooling module according to any one of claims 1-9, wherein, The cooling module is equipped with a first temperature sensor, which is used to detect the temperature of the area of ​​the cooling chamber near the communication position.

12. An oven comprising a cooling module as described in any one of claims 1-11.

13. The oven as claimed in claim 12, wherein, The cooling module is provided with a cooling module exhaust port to allow clean air inside the cooling module to be discharged from the cooling module exhaust port; the oven also includes a preheating module and a clean air recovery pipe. The preheating module is provided with a recovery air inlet. The two ends of the clean air recovery pipe are respectively connected to the recovery air inlet and the cooling module exhaust port, so that the clean air discharged from the cooling module passes through the clean air recovery pipe and enters the preheating module from the recovery air inlet.

14. The oven as claimed in claim 12, wherein, The oven body has an opening, and an insulation door is installed at the opening. The insulation door includes a first door, a second door, and a heat insulation pad. The first door is located outside the oven body and is closedly disposed at the oven body opening. The second door enters the oven body through the oven body opening. The heat insulation pad is disposed between the first door and the second door at intervals.

15. The oven as claimed in claim 12, wherein, The oven body is equipped with a spraying device, which includes a spray pipe and a first connector. The spray pipe is installed on the oven body, with one end of the spray pipe located inside the oven body. The end of the spray pipe inside the oven body is provided with a spray hole. The first connector is installed on the end of the spray pipe away from the spray hole and is located outside the oven body. The outer surface of the first connector is provided with a mark, which is opposite to the spray hole in the axial direction of the spray pipe.

16. The oven as claimed in claim 12, wherein, The oven includes a preheating module, a heating module, and a cooling module that are connected in sequence. A conveying device is provided inside the oven to convey objects through the preheating module, the heating module, and the cooling module in sequence. Gate lifting devices are provided between the preheating module and the heating module, between the heating module and the cooling module, and at the module outlet of the cooling module. The gate lifting device includes a frame, a lifting gate, and a proximity sensor. A spacer structure is mounted on the frame, and a conveying channel is provided on the spacer structure corresponding to the conveying device, allowing objects on the conveying device to pass through the spacer structure via the conveying channel. The lifting gate is mounted on the frame and is used to open and close the conveying channel. The proximity sensor is mounted on the frame and located on the entrance side of the lifting gate. The proximity sensor is used to detect objects on the conveying device and is electrically connected to the lifting gate to drive the lifting gate to open the conveying channel based on the proximity sensor readings.

17. The oven as claimed in claim 16, wherein, The lifting gate includes a gate, a gate drive shaft, a fixed flange, a motor module, a transition flange, and a limit pin. The gate is located inside the oven. The fixed flange is installed on the outer wall of the oven. One end of the gate drive shaft extends from the fixed flange to the outside of the oven. The portion of the gate drive shaft inside the oven is dynamically coupled to the gate. The motor module is located on the side of the oven away from the fixed flange. The transition flange is installed on the motor module. The transition flange and the fixed flange are axially spaced opposite to the gate drive shaft. One end of the gate drive shaft outside the oven extends into the motor module from the transition flange. The motor module is dynamically coupled to the other end of the gate drive shaft outside the oven. The limit pin extends axially along the gate drive shaft. Both ends of the limit pin are connected to the fixed flange and the transition flange, respectively, to limit the rotation of the motor module relative to the oven.

18. The oven as claimed in claim 12, wherein, The oven is equipped with a conveying device and an air supply device to blow air onto the object on the conveying device. The air supply device includes a housing and a guide vane. The housing forms at least two adjacent air outlets. The guide vane is disposed in the housing and located between the two adjacent air outlets. The guide vane extends along the air outlet direction and the width of the guide vane gradually decreases in the air outlet direction.

19. The oven as claimed in claim 18, wherein, The housing includes at least one channel housing unit, one end of which is provided with the air outlet, and the channel housing unit includes a static pressure box; The static pressure chamber includes a main body and a flow guide. The main body forms the channel. One end of the main body has a chamber inlet and the other end has a chamber outlet. The channel connects the chamber inlet and the chamber outlet. The flow guide is at least partially located within the channel and covers the chamber inlet. The flow guide includes a central region and a peripheral region. The central region has multiple first ventilation holes, and the peripheral region has multiple second ventilation holes. The average diameter of the multiple first ventilation holes is greater than the average diameter of the multiple second ventilation holes.

20. The oven as claimed in claim 12, wherein, The oven is equipped with a conveying device, and an airflow circulation channel is formed inside the oven. A return air device is installed on the lower side of the conveying device and is located in the airflow circulation channel. The return air device includes a return air box and a baffle. The return air box is provided with a box inlet and a box outlet. An airflow return channel is formed inside the return air box, and the airflow return channel connects the box outlet and the box inlet. The baffle is movably and adjustablely installed at the box outlet to adjust the size of the box outlet.

21. The oven as claimed in claim 12, wherein, The oven is equipped with a conveying device, which includes a mesh belt, drive shafts, a mesh belt forward rotation drive module, and a mesh belt reverse rotation drive module. The drive shafts extend along the width of the mesh belt, with both ends extending beyond the mesh belt. Multiple drive shafts are spaced apart circumferentially along the mesh belt. Each drive shaft is fitted with a pulley, which abuts against the underside of the mesh belt. At least one end of each drive shaft is fitted with a drive sprocket, and the drive sprockets at the same end of the drive shafts are connected via chain drive. One of the drive shafts is a forward rotation drive shaft, and one end of the forward rotation drive shaft is dynamically coupled to the mesh belt forward rotation drive module, so that the mesh belt can be driven to rotate forward, thereby driving the mesh belt to move forward. One of the plurality of drive shafts is a reverse drive shaft, one end of which is dynamically coupled to the reverse drive module of the mesh belt, so that the mesh belt reverse drive module drives the plurality of drive shafts to rotate in the opposite direction, thereby driving the mesh belt to move in the opposite direction.

22. The oven as claimed in claim 21, wherein, The conveying device further includes a bottle pushing device, which includes a bottle pushing fixing member and a bottle pushing stop. The bottle pushing fixing member is used to be installed on the mesh belt. The bottle pushing stop is located at the end of the bottle pushing device away from the bottle pushing fixing member in the conveying direction of the conveying device. The bottle pushing stop is used to abut against an object on the mesh belt on one side in the conveying direction. The bottle pushing stop is equipped with a support wheel that can rotate along the axis in the width direction of the mesh belt, so that the bottle pushing stop abuts against the mesh belt through the support wheel.

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