Equipment for drying food

Abstract

The utility model relates to a drying technology, in particular to food drying equipment which comprises a drying room, the drying room comprises a heat preservation board room, and a middle wind shield used for dispersing hot air is fixed to the inner wall of the heat preservation board room; and the circulating fan system is arranged in the cavity of the heat preservation board room. Cooperative work of all the systems and parts is optimized, the food drying quality and efficiency are improved, the circulating fan system and the heating system are tightly matched, it is ensured that hot air can evenly cover all corners in the drying room and make contact with all layers of materials, efficient drying is achieved, linkage of the air supplementing system and the humidity discharging system is achieved, and the drying efficiency is improved. The air pressure balance in the drying room is maintained, the drying environment is optimized, the drying effect is further improved, the heating system rapidly and evenly transfers steam heat to air through efficient heat exchange, the heat energy utilization efficiency is improved, and energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to a drying technology, specifically a device for drying food. Background Technology

[0002] To extend shelf life and improve storage performance, food is often dried. Food drying equipment is a device specifically designed to remove excess moisture from food. It uses heating and air circulation to dry the food, thereby extending its shelf life, improving its storage performance, or meeting specific processing needs.

[0003] Existing food drying equipment suffers from technical problems, primarily because traditional horizontal double-circulation dryers use a flat blower wall structure, where hot air is directly blown onto the material surface, resulting in uneven drying. Specifically, areas where hot air can reach experience localized over-drying, potentially causing the bottom silicone pad to lift, leading to material deformation and unevenness; while areas where hot air cannot reach dry slowly. Furthermore, for non-breathable materials such as peony bark, or when using stainless steel plates as tray molds, hot air has difficulty penetrating the material, further exacerbating the uneven drying. These problems seriously affect the quality and efficiency of food drying. Utility Model Content

[0004] The purpose of this invention is to provide a device for drying food, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An apparatus for drying food includes a drying chamber, the drying chamber comprising:

[0007] The insulated prefabricated house has an intermediate windbreak plate fixed to its inner wall for dispersing hot air.

[0008] A circulating fan system is installed inside the cavity of the insulated prefabricated house, and the circulating fan system is connected to a heating system installed inside the cavity of the insulated prefabricated house.

[0009] A makeup air system is installed on the insulated prefabricated house. The makeup air system is indirectly connected to the circulating fan system. The cold air introduced by the makeup air system is heated by the heating system and then enters the circulating fan system.

[0010] A dehumidification system is installed on the insulated prefabricated house and is linked to the air supply system to remove moisture from the drying room.

[0011] A heating system is installed inside the cavity of the insulated prefabricated house to provide hot air to the circulating fan system;

[0012] A steam control system is installed inside the cavity of the insulated prefabricated house and connected to the heating system. The steam control system is also connected to a condensate drainage system installed inside the insulated prefabricated house.

[0013] A turnover cart is installed inside the insulated prefabricated house to carry materials.

[0014] An apparatus for drying food as described above: the circulating fan system includes:

[0015] Inner frame, fan baffle installed on the inner frame;

[0016] A circulating fan, installed on the fan baffle, is used to provide power for hot air circulation;

[0017] An air distribution plate is installed on the inner frame below the fan baffle. The air distribution plate has irregularly shaped holes for evenly dispersing hot air.

[0018] The top baffle plate, fixed to the inner frame between the fan baffle and the air distribution plate, is used to guide the flow of hot air.

[0019] An apparatus for food drying as described above: the air supply system includes:

[0020] An electric air valve, and a first sheet metal part located on one side of the electric air valve;

[0021] A protective net is located on the other side of the electric air valve to prevent foreign objects from entering.

[0022] An apparatus for drying food as described above: the heating system includes:

[0023] A radiator is used to transfer the heat of steam to the air;

[0024] The third sheet metal part is used to support the radiator and form a heating channel.

[0025] An apparatus for drying food as described above: the steam control system includes:

[0026] Pipeline, and regulating valve connected to the pipeline for regulating steam flow;

[0027] A shut-off valve, located on the pipeline on one side of the regulating valve, is used to control the flow of steam.

[0028] A filter, located on the pipeline on one side of the shut-off valve, is used to filter impurities in the steam.

[0029] An apparatus for drying food as described above: the transfer cart includes:

[0030] A frame, consisting of several round steel bars fixed at equal intervals on the frame, the round steel bars being used to support the material pallet;

[0031] Wheels are installed at the four corners of the bottom of the frame to facilitate the movement of the transfer cart within the drying room.

[0032] As described above, a food drying device includes a condensate drainage system comprising:

[0033] Pipe fitting, and a check valve connected to the pipe fitting, the check valve being used to prevent condensate backflow;

[0034] A steam trap, located on the side of the check valve, is installed on the pipe fitting to automatically drain condensate without leaking steam.

[0035] A bypass shut-off valve is connected at both ends to the pipe fittings on one side of the check valve and the other side of the drain valve.

[0036] Compared with the prior art, the beneficial effects of this utility model are:

[0037] By optimizing the coordinated operation of various systems and components, the quality and efficiency of food drying are improved. The insulated prefabricated houses are assembled with high-efficiency heat insulation materials, effectively reducing heat loss and improving energy utilization efficiency. The setting of the middle baffle guides the hot air to be evenly distributed, avoiding problems such as local overheating or uneven drying, and significantly improving the uniformity and efficiency of drying. The close cooperation between the circulating fan system and the heating system ensures that the hot air can evenly cover every corner of the drying room and contact every layer of material, achieving efficient drying. The linkage between the air supply system and the dehumidification system maintains the air pressure balance in the drying room, optimizes the drying environment, and further improves the drying effect. The heating system, through efficient heat exchange, quickly and evenly transfers the heat of steam to the air, improving thermal energy utilization efficiency and reducing energy consumption.

[0038] The connection between the steam control system and the condensate drainage system enables automatic discharge of condensate, preventing damage to the equipment caused by condensate accumulation and ensuring the safe operation of the steam system. The design of the trolley, with its bottom rails, effectively prevents collisions between trolleys, ensuring the stability of materials during the drying process and reducing the risk of material damage. The condensate drainage system, through the coordinated operation of check valves, steam traps, and bypass shut-off valves, achieves efficient discharge of condensate and stable system operation, while also providing convenience for maintenance. Overall, this invention's food drying equipment significantly reduces energy consumption and improves equipment reliability while improving drying efficiency and quality. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of a device used for food drying.

[0040] Figure 2 This is a schematic diagram of the circulating fan system in equipment used for food drying.

[0041] Figure 3 This is a schematic diagram of the turnover cart and air distribution plate in equipment used for food drying.

[0042] Figure 4 This is a schematic diagram of the air supply system in equipment used for food drying.

[0043] Figure 5 This is a schematic diagram of the dehumidification system in equipment used for food drying.

[0044] Figure 6 This is a schematic diagram of another embodiment of a dehumidification system in a food drying apparatus.

[0045] Figure 7 This is a schematic diagram of the heating system in equipment used for food drying.

[0046] Figure 8 This is a schematic diagram of the steam control system in a food drying equipment.

[0047] Figure 9 This is a schematic diagram of the condensate drainage system in equipment used for food drying.

[0048] Figure 10 This is a schematic diagram of the structure of a turnover cart in equipment used for food drying.

[0049] In the diagram: 1. Insulated prefabricated house; 2. Circulating fan system; 201. Circulating fan; 202. Internal frame; 203. Fan baffle; 204. Air distribution plate; 205. Top wind deflector; 3. Make-up air system; 301. Electric air valve; 302. First sheet metal part; 303. Protective net; 4. Dehumidification system; 401. Fan; 402. Air duct; 403. Elbow; 404. Second sheet metal part; 5. Heating System; 501, Radiator; 502, Third sheet metal part; 6, Intermediate baffle plate; 7, Steam control system; 701, Regulating valve; 702, Shut-off valve; 703, Filter; 704, Pipeline; 8, Turnover cart; 801, Frame; 802, Round steel; 803, Wheel; 9, Condensate drainage system; 901, Steam trap; 902, Check valve; 903, Bypass shut-off valve; 904, Pipe fittings. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0051] Please see Figure 1 In this embodiment of the present invention, a device for drying food includes a drying chamber, the drying chamber comprising:

[0052] Insulated panel house 1, the inner wall of which is fixed with an intermediate windbreak plate 6 for dispersing hot air;

[0053] A circulating fan system 2 is installed inside the cavity of the insulated prefabricated house 1, and the circulating fan system 2 is connected to the heating system 5 installed inside the cavity of the insulated prefabricated house 1.

[0054] Makeup air system 3 is installed on the insulated prefabricated house 1. Makeup air system 3 is indirectly connected to the circulating fan system 2. The cold air introduced by makeup air system 3 is heated by heating system 5 and then enters the circulating fan system 2.

[0055] Dehumidification system 4, which is installed on the insulated panel house 1 and linked with the air supply system 3, is used to remove moisture from the drying room.

[0056] Heating system 5, which is installed inside the cavity of the insulated prefabricated house 1, is used to provide hot air to the circulating fan system 2;

[0057] A steam control system 7 is installed inside the cavity of the insulated prefabricated house 1 and connected to the heating system 5. The steam control system 7 is also connected to the condensate drainage system 9 installed inside the insulated prefabricated house 1.

[0058] A turnover cart 8 is installed inside the insulated prefabricated house 1 to carry materials.

[0059] In this embodiment, the insulated panel 1 is assembled from polyurethane panels or rock wool panels, which has good thermal insulation performance and can effectively reduce heat loss and ensure energy utilization efficiency during the drying process. The middle baffle 6 fixed on its inner wall can guide the hot air to be evenly distributed in the drying room, avoiding local overheating or uneven drying, thereby significantly improving the uniformity and efficiency of drying.

[0060] The circulating fan system 2 is installed inside the cavity of the insulated panel house 1 and is closely connected to the heating system 5. The circulating fan system 2 evenly delivers the heated hot air to every corner of the drying room, ensuring that the hot air can fully contact each layer of material, thereby achieving a high-efficiency drying effect. This not only improves the drying efficiency but also avoids the problem of uneven drying in some areas that is common in traditional drying equipment.

[0061] The make-up air system 3 is installed on the insulated panel house 1 and is indirectly connected to the circulating fan system 2. The cold air introduced by it is heated by the heating system 5 and then re-enters the circulating fan system 2 to participate in the circulation of hot air. This design not only replenishes the air consumed during the drying process, but also maintains the air pressure balance in the drying room, ensuring the stability and safety of the drying process. At the same time, the make-up air system 3 is linked with the dehumidification system 4. When the dehumidification system 4 discharges moisture, the make-up air system 3 automatically replenishes fresh air, further optimizing the drying environment.

[0062] The heating system 5, as the source of hot air, is installed inside the cavity of the insulated panel house 1 to provide stable hot air for the circulating fan system 2. The heating system 5 can quickly transfer the heat of the steam to the air, ensuring that the temperature of the hot air is uniform and stable. This design improves the drying efficiency.

[0063] The steam control system 7 is connected to the condensate drainage system 9, which can automatically drain condensate to prevent condensate from accumulating and damaging the equipment, while ensuring the safe operation of the steam system. The steam control system 7 improves the automation level of the equipment and reduces the complexity of manual operation.

[0064] The turnover cart 8 is installed inside the insulated prefabricated house 1 to carry materials. The bottom of the turnover cart 8 is equipped with a track, which can effectively prevent collisions between turnover carts 8 and ensure the stability of materials during the drying process. This design not only improves drying efficiency but also reduces the risk of damage to materials during the drying process.

[0065] Please see Figure 2 As a further embodiment of this utility model, the circulating fan system 2 includes:

[0066] Inner frame 202, fan baffle 203 installed on the inner frame 202;

[0067] A circulating fan 201 is installed on the fan baffle 203 to provide power for hot air circulation;

[0068] The air distribution plate 204 is disposed on the inner frame 202 below the fan baffle 203. The air distribution plate 204 has irregularly shaped holes for uniformly dispersing hot air.

[0069] The top baffle plate 205 is fixed on the inner frame 202 between the fan baffle plate 203 and the air distribution plate 204, and is used to guide the flow of hot air.

[0070] In this embodiment, the inner frame 202 serves as the basic support structure of the entire system, ensuring the stable installation of each component and the stability of the overall structure. The fan baffle 203 installed on the inner frame 202 not only serves to fix the circulating fan 201, but also effectively guides the flow of hot air, preventing hot air from directly impacting other components, thereby extending the service life of the equipment.

[0071] The circulating fan 201 is installed on the fan baffle 203. The circulating fan 201 is a single axial fan, an external rotor fan, or a combination of both. It generates a strong airflow through high-speed rotation, which delivers the hot air provided by the heating system 5 to various areas of the drying room. The air distribution plate 204 is set on the inner frame 202 below the fan baffle 203. It has irregularly shaped holes, which can be irregular shapes including but not limited to circles, squares, rhombuses, squares, straight grooves, etc. The number of holes N on the air distribution plate 204 is greater than or equal to 1, which makes the circulating air more uniform. The N of the circulating fan system 2 is greater than or equal to 1, which makes the drying effect better. It can evenly disperse the hot air and ensure that the hot air can evenly cover every corner of the drying room. This uniform hot air distribution method effectively avoids the problem of local overheating or uneven drying, and significantly improves the drying quality.

[0072] The top baffle 205 is fixed on the inner frame 202 between the fan baffle 203 and the air distribution plate 204. It plays an important guiding role. Through reasonable design, the top baffle 205 can guide the hot air to the correct direction and further optimize the flow path of the hot air.

[0073] Please see Figure 4 As a further embodiment of this utility model, the air supply system 3 includes:

[0074] Electric air valve 301, and first sheet metal part 302 located on one side of the electric air valve 301;

[0075] The protective net 303 is located on the other side of the electric air valve 301 and is used to prevent foreign objects from entering.

[0076] In this embodiment, the electric air valve 301, as the core component of the air supply system 3, can precisely control the opening and closing of the air supply, ensuring that fresh air can be replenished in time when the dehumidification system 4 is working, and maintaining the air pressure balance in the drying room. The first sheet metal part 302 on one side not only plays a role in fixing and supporting, but also guides the direction of airflow, so that the replenished cold air can smoothly enter the heating system 5 for heating treatment.

[0077] The protective net 303 located on the other side of the electric air valve 301 plays a key safety protection role. The protective net 303 can effectively prevent foreign objects, such as dust, insects or other impurities, from entering the air supply system 3, thereby preventing these foreign objects from being brought into the drying room and affecting the hygiene and quality of the food. This design not only ensures the hygiene and safety of the food during the drying process.

[0078] Please see Figure 5 For example, in one embodiment, the dehumidification system 4 includes:

[0079] A fan 401 is provided, and a duct 402 for guiding airflow is installed on one side of the fan 401. The port of the duct 402 is connected to the electric air valve 301.

[0080] In this embodiment, the fan 401, as the core power component for dehumidification, can quickly expel moisture according to the humidity level in the drying room. A duct 402 is installed on one side of the fan 401. The duct 402 not only guides airflow but also ensures that moisture can be smoothly discharged from the drying room to the external environment. The port of the duct 402 is connected to an electric air valve 301. This design allows the dehumidification system 4 to work in conjunction with the air supply system 3. When the dehumidification system 4 is working, the electric air valve 301 automatically opens, and the air supply system 3 replenishes fresh air, maintaining the air pressure balance in the drying room. One or two fans 401 can be selected for use depending on the specific site conditions to meet different dehumidification needs. The type of fan 401 can also be selected as a centrifugal fan or an axial fan according to actual needs. Centrifugal fans are suitable for applications requiring higher air pressure, while axial fans excel in high-flow-rate exhaust. This flexible design allows the dehumidification system 4 to adapt to various complex drying environments, ensuring the high efficiency and stability of the drying process.

[0081] Please see Figure 6 In another exemplary embodiment, the dehumidification system 4 includes:

[0082] A fan 401, with a second sheet metal part 404 installed at its port, and the fan 401 is connected to the electric air valve 301;

[0083] Air duct 402, and an elbow 403 connecting the air duct 402 and the electric air valve 301.

[0084] In this embodiment, the fan 401, as a key component for dehumidification, has a second sheet metal part 404 installed at its port. The second sheet metal part 404 not only fixes and protects the fan 401 but also optimizes the airflow direction, allowing moisture to be discharged from the drying chamber more smoothly. The connection between the fan 401 and the electric air valve 301 ensures the linkage between the dehumidification system 4 and the air supply system 3. When the dehumidification system 4 is started, the electric air valve 301 automatically opens, and the air supply system 3 promptly replenishes fresh air to maintain the air pressure balance in the drying chamber. The duct 402 is connected to the electric air valve 301 via an elbow 403. The design of the elbow 403 not only... The design guides airflow direction and reduces airflow resistance within the channel, improving dehumidification efficiency. This makes the dehumidification system 4 more efficient and stable during operation, while also facilitating installation and maintenance. The number of fans 401 can be selected as one or two according to specific site requirements to meet different dehumidification needs. The type of fan 401 can also be selected as centrifugal or axial fan according to the actual application scenario. Centrifugal fans are suitable for occasions requiring higher air pressure, while axial fans perform well in high-flow exhaust. This flexible design allows the dehumidification system 4 to adapt to various complex drying environments, ensuring the high efficiency and stability of the drying process.

[0085] Please see Figure 7 As a further embodiment of this utility model, the heating system 5 includes:

[0086] Radiator 501 is used to transfer the heat of steam to the air;

[0087] The third sheet metal part 502 is used to support the radiator 501 and form a heating channel.

[0088] In this embodiment, the radiator 501 uses a highly efficient heat exchange principle to quickly and evenly transfer the heat in the steam to the air flowing over its surface. This design not only ensures the temperature uniformity of the hot air, but also improves the utilization efficiency of thermal energy.

[0089] The third sheet metal part 502 plays an important supporting and guiding role. It not only firmly supports the radiator 501 and ensures its stability during operation, but also forms a heating channel through its structural design. This channel can guide the air to flow through the radiator 501 in an orderly manner, thereby maximizing the absorption of heat and further improving the heating efficiency.

[0090] Please see Figure 8 As a further embodiment of this utility model, the steam control system 7 includes:

[0091] Pipeline 704, and regulating valve 701 connected to pipeline 704 for regulating steam flow;

[0092] A shut-off valve 702 is located on the pipeline 704 on one side of the regulating valve 701 and is used to control the on / off of steam.

[0093] The filter 703 is located on the pipe 704 on one side of the shut-off valve 702 and is used to filter impurities in the steam.

[0094] In this embodiment, pipe 704 serves as the main channel for steam transmission, connecting various key components to ensure smooth steam flow within the system. Regulating valve 701 is installed on pipe 704. Through the combination of valve groups and the installation of a temperature sensing element at the main unit's air outlet, the control system adjusts the opening size of regulating valve 701 based on the signal feedback from the temperature sensing element, thereby controlling the main unit's air outlet temperature. By precisely adjusting its opening, the steam flow rate can be flexibly controlled, thus dynamically adjusting the heat output of heating system 7 according to the actual needs of the drying process, ensuring the stability and uniformity of the drying temperature.

[0095] The shut-off valve 702 is located on the side of the regulating valve 701 and is also installed on the pipeline 704. It is mainly used to control the on / off of steam and can quickly cut off the steam supply when needed to ensure the safe operation of the equipment. The filter 703 is located on the side of the shut-off valve 702 and is also installed on the pipeline 704. Its main function is to filter impurities in the steam, such as rust, dust and other particulate matter. By filtering these impurities, the filter 703 can effectively prevent impurities from entering the heating system 5 and avoid the decrease in thermal efficiency or equipment failure caused by the accumulation of impurities.

[0096] Please see Figure 10 As a further embodiment of this utility model, the turnover cart 8 includes:

[0097] A frame 801, and several round steel bars 802 fixed at equal intervals on the frame 801, the round steel bars 802 being used to support the material pallet;

[0098] Wheels 803 are installed at the four corners of the bottom of the frame 801 to facilitate the movement of the transfer cart 8 in the drying room.

[0099] In this embodiment, several round steel bars 802 are fixed at equal intervals on the frame 801. The round steel bars 802 can evenly distribute the weight of the material tray and ensure the stability of the material during the drying process. The wheels 803 are installed at the four corners of the bottom of the frame 801. This design allows the turnover cart 8 to move easily in the drying room. The wheels 803 not only have good load-bearing capacity, but also can turn flexibly, making it convenient for operators to push the turnover cart 8 into or out of the drying room as needed.

[0100] Please see Figure 9 As a further embodiment of this utility model, the condensate drainage system 9 includes:

[0101] Pipe fitting 904, check valve 902 connected to the pipe fitting 904, the check valve 902 is used to prevent condensate backflow;

[0102] A steam trap 901 is located on the pipe fitting 904 on one side of the check valve 902 and is used to automatically drain condensate without leaking steam.

[0103] The bypass shut-off valve 903 is connected at both ends to the pipe fitting 904 on one side of the check valve 902 and the other side of the drain valve 901.

[0104] In this embodiment, pipe fitting 904, as a major component of the system, is used to connect various key components and ensure that condensate can flow smoothly. Check valve 902 is installed on pipe fitting 904, and its core function is to prevent condensate backflow. This design can effectively prevent condensate from flowing back into the steam system during the discharge process due to pressure changes or other factors, thereby protecting the equipment from water hammer effect damage and ensuring the normal operation of the steam system. Steam trap 901 is located on the same side as check valve 902 and is also installed on pipe fitting 904. It can automatically open and close according to the accumulation of condensate, thereby realizing automatic discharge of condensate. The design of steam trap 901 can not only efficiently discharge condensate, but also ensure that steam does not leak, thereby improving the safety and reliability of the system.

[0105] The two ends of the bypass shut-off valve 903 are connected to the pipe fitting 904 between the check valve 902 and the steam trap 901, respectively. This design provides the system with a backup drainage channel. When the steam trap 901 needs maintenance or malfunctions, the bypass shut-off valve 903 can be manually operated to drain the condensate, ensuring that the normal operation of the equipment is not affected.

[0106] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A device for drying food, comprising a drying chamber, characterized in that, The drying room includes: Insulated panel house (1), the inner wall of which is fixed with an intermediate wind baffle (6) for dispersing hot air; A circulating fan system (2) is installed inside the cavity of the insulated panel house (1), and the circulating fan system (2) is connected to a heating system (5) installed inside the cavity of the insulated panel house (1). Makeup air system (3), the makeup air system (3) is installed on the insulation panel house (1), the makeup air system (3) is indirectly connected to the circulating fan system (2), the cold air introduced by the makeup air system (3) is heated by the heating system (5) and then enters the circulating fan system (2); A dehumidification system (4) is installed on the insulated panel house (1) and linked with the air supply system (3) to remove moisture from the drying room; Heating system (5), which is installed in the cavity of the insulated panel house (1) and is used to provide hot air to the circulating fan system (2); A steam control system (7) is installed in the cavity of the insulated panel house (1) and connected to the heating system (5). The steam control system (7) is connected to the condensate drainage system (9) installed inside the insulated panel house (1). A turnover cart (8) is installed inside the insulated prefabricated house (1) to carry materials.

2. The equipment for drying food according to claim 1, characterized in that, The circulating fan system (2) includes: Inner frame (202), fan baffle (203) installed on the inner frame (202); A circulating fan (201) is installed on the fan baffle (203) to provide power for hot air circulation; A uniform air distribution plate (204) is provided on the inner frame (202) below the fan baffle (203). The uniform air distribution plate (204) has irregularly shaped holes for uniformly dispersing hot air. The top baffle (205) is fixed on the inner frame (202) between the fan baffle (203) and the air distribution plate (204) to guide the flow of hot air.

3. The equipment for drying food according to claim 1, characterized in that, The make-up air system (3) includes: An electric air valve (301), and a first sheet metal part (302) located on one side of the electric air valve (301); A protective net (303) is located on the other side of the electric air valve (301) to prevent foreign objects from entering.

4. The equipment for drying food according to claim 1, characterized in that, The heating system (5) includes: Radiator (501) is used to transfer the heat of steam to the air; The third sheet metal part (502) is used to support the radiator (501) and form a heating channel.

5. The equipment for drying food according to claim 1, characterized in that, The steam control system (7) includes: Pipeline (704), and regulating valve (701) connected to said pipeline (704) for regulating steam flow; A shut-off valve (702) is located on the pipeline (704) on one side of the regulating valve (701) and is used to control the on / off of steam; A filter (703), located on the side of the shut-off valve (702) and mounted on the pipe (704), is used to filter impurities in the steam.

6. The equipment for drying food according to claim 1, characterized in that, The turnover vehicle (8) includes: A frame (801) and several round steel bars (802) fixed at equal intervals on the frame (801), the round steel bars (802) being used to support the material pallet; Wheels (803) are installed at the four corners of the bottom of the frame (801) to facilitate the movement of the transfer vehicle in the drying room.

7. The equipment for drying food according to claim 1, characterized in that, The condensate drainage system (9) includes: A fitting (904), and a check valve (902) connected to the fitting (904), the check valve (902) being used to prevent condensate backflow; A steam trap (901) is located on the side of the check valve (902) and installed on the pipe fitting (904) for automatically draining condensate without leaking steam. A bypass shut-off valve (903) is connected at both ends to the fitting (904) on one side of the check valve (902) and the other side of the drain valve (901).

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