Low-temperature air conduction type vacuum freeze dryer

Abstract

The utility model relates to the technical field of freeze-drying machines, in particular to a low-temperature air conduction type vacuum freeze-drying machine which comprises a water spraying pipe and a spraying head. The water pan is mounted below the conveying mesh belt; the water spraying pipe is arranged between the upper layer and the lower layer of the conveying mesh belt, and a plurality of nozzles spraying downwards are arranged on the water spraying pipe; the water spraying pipe is respectively connected with a water source and an air source through a three-way joint and a valve; the rotary cleaning part is rotationally arranged below the spray head; the scraping plate is arranged at the downstream of the rotary cleaning component; the airflow distribution cover is fixedly arranged on the downstream of the scraping plate between the upper layer and the lower layer of the conveying mesh belt, and an air outlet of the airflow distribution cover faces downwards; by improving the low-temperature air conduction type vacuum freeze dryer, the low-temperature air conduction type vacuum freeze dryer has the advantages that the conveying net belt is brushed and blow-dried, the use sanitation of the device is ensured, and the use efficiency of the device is improved, so that the problems and defects in the prior art and equipment are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of quick-freezing equipment technology, and more specifically, to a low-temperature air conduction vacuum freeze dryer. Background Technology

[0002] Vacuum freeze-drying technology utilizes the principle of the three states of water under low temperature and low pressure. The material to be dried is first cooled and frozen, so that the liquid water in the material becomes solid ice. Then, the material is heated under vacuum conditions, so that the ice directly sublimates into water vapor and is removed, thereby obtaining a dried product dehydrated at low temperature.

[0003] Materials need to be quick-frozen before drying. Existing quick-freezing equipment usually places the materials on a conveyor belt and freezes them through a quick-freezing box. Material residue and frost easily adhere to the surface of the conveyor belt, affecting the hygiene of use and increasing the running resistance of the conveyor belt.

[0004] In view of this, we have studied and improved the existing problems and provided a low-temperature air conduction vacuum freeze dryer, aiming to solve the problems and improve its practical value through this technology. Utility Model Content

[0005] The purpose of this invention is to provide a low-temperature air conduction vacuum freeze dryer to solve the problems and deficiencies mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides a low-temperature air conduction vacuum freeze dryer, which is achieved through the following specific technical means:

[0007] A low-temperature air-conduction vacuum freeze dryer includes: a housing, a conveyor belt, evaporators, a circulating fan, a water tray, a drain pipe, a baffle, a water spray pipe, a nozzle, a tee connector, a valve, a rotating cleaning component, a drive motor, a scraper, an airflow distribution hood, a heating element, a blower, an airflow collection hood, and a return air pipe. The conveyor belt passes through the housing, with both ends extending out of the housing. The evaporators are spaced apart along the conveyor belt's conveying direction, and each evaporator is equipped with a circulating fan. The water tray is installed below the conveyor belt, and a drain pipe is connected to the lower part of the water tray. The baffle is installed on one side of the conveyor belt. The water spray pipe is positioned between the upper and lower layers of the conveyor belt, and the water spray pipe is equipped with... Multiple downward-spraying nozzles; the water spray pipes are connected to a water source and an air source respectively via tee connectors and valves; the rotating cleaning component is rotatably positioned below the nozzles, and is driven by a drive motor and abuts against the surface of the conveyor belt; the scraper is positioned downstream of the rotating cleaning component; the airflow distribution hood is fixedly positioned downstream of the scraper between the upper and lower layers of the conveyor belt, and the air outlet of the airflow distribution hood faces downward; the heating pipe is fixed inside the airflow distribution hood; the blower is fixed outside the baffle, and the air outlet of the blower is connected to the airflow distribution hood; the airflow collection hood is positioned below the airflow distribution hood; the airflow collection hood is connected to the air inlet of the blower via a return air pipe.

[0008] As a further optimization of this technical solution, the air outlet of the air distribution hood of the low-temperature air conduction vacuum freeze dryer of this utility model is a gradually narrowing guide structure.

[0009] As a further optimization of this technical solution, the airflow collection hood of the low-temperature air conduction vacuum freeze dryer of this utility model has a vertical guide section at the top and a conical converging section at the bottom.

[0010] As a further optimization of this technical solution, the rotating cleaning component of the low-temperature air conduction vacuum freeze dryer of this utility model is a roller structure with a flexible cleaning medium on its surface.

[0011] As a further optimization of this technical solution, the scraper of the low-temperature air conduction vacuum freeze dryer of this utility model is a plate-shaped structure with a soft edge at the top.

[0012] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0013] 1. The water spray pipe of this utility model is installed between the upper and lower layers of the conveyor belt, and the water spray pipe is equipped with multiple downward spray nozzles. The rotating cleaning component is rotatably installed below the nozzles and is set to abut against the surface of the conveyor belt. Through the coordinated action of the water spray pipe and the rotating cleaning component, the conveyor belt is cleaned to ensure the cleanliness and hygiene of the conveyor belt.

[0014] 2. The airflow distribution hood of this utility model is fixedly installed downstream of the scraper between the upper and lower layers of the conveyor belt, and the air outlet of the airflow distribution hood faces downward. The airflow collection hood is installed below the airflow distribution hood. The airflow distribution hood dries the conveyor belt, so that the device can be put into use quickly and improve the efficiency of the device. The airflow collection hood recovers the airflow, reduces the diffusion of heat, and saves energy.

[0015] 3. This utility model improves the low-temperature air conduction vacuum freeze dryer, which has the advantages of cleaning and drying the conveyor belt, ensuring the hygiene of the device, and improving the efficiency of the device, thus effectively solving the problems and shortcomings of the existing technology and equipment. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 This is a partial structural schematic diagram of the present invention;

[0020] Figure 4 This is a schematic diagram of the rotating cleaning component of this utility model;

[0021] Figure 5 This is a cross-sectional view of the airflow distribution hood of this utility model.

[0022] In the diagram: 1. Box body; 2. Conveyor belt; 3. Evaporator; 4. Circulating fan; 5. Water tray; 6. Drain pipe; 7. Baffle; 8. Spray pipe; 9. Nozzle; 10. T-joint; 11. Valve; 12. Rotary cleaning component; 13. Drive motor; 14. Scraper; 15. Airflow distribution hood; 16. Heating element; 17. Blower; 18. Airflow collection hood; 19. Return air pipe. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1 to 5 This utility model provides a specific technical implementation scheme for a low-temperature air conduction vacuum freeze dryer:

[0025] A low-temperature air-conduction vacuum freeze dryer includes: a housing 1, a conveyor belt 2, evaporators 3, a circulating fan 4, a water tray 5, a drain pipe 6, a baffle 7, a water spray pipe 8, a nozzle 9, a tee connector 10, a valve 11, a rotating cleaning component 12, a drive motor 13, a scraper 14, an airflow distribution hood 15, a heating element 16, a blower 17, an airflow collection hood 18, and a return air pipe 19; the conveyor belt 2 passes through the housing 1, and both ends of the conveyor belt 2 extend out of the housing 1; the evaporators 3 are arranged at intervals along the conveying direction of the conveyor belt 2, and each evaporator 3 is equipped with a circulating fan 4; the water tray 5 is installed below the conveyor belt 2, and the lower part of the water tray 5 is connected to the drain pipe 6; the baffle 7... Installed on one side of the conveyor belt 2; the water spray pipe 8 is set between the upper and lower layers of the conveyor belt 2, and the water spray pipe 8 is equipped with multiple downward spray nozzles 9; the water spray pipe 8 is connected to the water source and the air source respectively through the three-way connector 10 and the valve 11. By connecting to the air source, the water in the water spray pipe 8 can be discharged to prevent the water spray pipe 8 from freezing; the rotating cleaning component 12 is rotatably set below the nozzles 9, and the rotating cleaning component 12 is driven by the drive motor 13 and abuts against the surface of the conveyor belt 2; the rotating cleaning component 12 is a roller structure with a flexible cleaning medium on its surface; the coordinated action of the water spray pipe 8 and the rotating cleaning component 12 cleans the conveyor belt 2 to ensure the cleanliness and hygiene of the conveyor belt 2.

[0026] Scraper 14 is located downstream of rotating cleaning component 12; scraper 14 is a plate-like structure with a soft edge at the top, used to scrape off water droplets on conveyor belt 2; airflow distribution hood 15 is fixedly located downstream of scraper 14 between upper and lower layers of conveyor belt 2, and the air outlet of airflow distribution hood 15 faces downward; the air outlet of airflow distribution hood 15 is a tapered guide structure; heating pipe 16 is fixed inside airflow distribution hood 15; blower 17 is fixed outside baffle 7, and the air outlet of blower 17 is connected to airflow distribution hood 15; airflow collection hood 18 is located below airflow distribution hood 15; the upper part of airflow collection hood 18 is a vertical guide section, and the lower part is a conical converging section; airflow collection hood 18 is connected to the air inlet of blower 17 through return air pipe 19; airflow distribution hood 15 dries conveyor belt 2, allowing the device to be put into use quickly and improving the efficiency of the device; airflow collection hood 18 recovers airflow, reduces heat diffusion, and saves energy.

[0027] Specific implementation steps

[0028] When the conveyor belt 2 needs cleaning, start the conveyor belt 2, open the valve 11 connected to the water source in the water spray pipe 8, and spray water from the nozzle 9. The drive motor 13 drives the rotating cleaning component 12 to clean the conveyor belt 2. When the conveyor belt 2 moves to the scraper 14, the scraper 14 scrapes away the water droplets on the surface of the conveyor belt 2. The blower 17 causes air to enter the airflow distribution hood 15. The air is heated by the heating pipe 16 and then blown onto the conveyor belt 2, making the conveyor belt 2 dry quickly. The airflow collection hood 18 recovers the hot air, and the hot air re-enters the blower 17 through the return air pipe 19, reducing energy consumption.

[0029] In summary, this low-temperature air-conduction vacuum freeze dryer uses a water spray pipe positioned between the upper and lower layers of a conveyor belt. The water spray pipe has multiple downward-spraying nozzles, and a rotating cleaning component is positioned below the nozzles, contacting the surface of the conveyor belt. The coordinated action of the water spray pipe and the rotating cleaning component cleans the conveyor belt, ensuring its cleanliness and hygiene. An airflow distribution hood is fixed downstream of the scraper between the upper and lower layers of the conveyor belt, with its outlet facing downwards. An airflow collection hood is positioned below the airflow distribution hood, drying the conveyor belt through the airflow distribution hood. This allows for rapid deployment and improves the efficiency of the device. The airflow collection hood recovers airflow, reducing heat loss and saving energy. This invention, through improvements to the low-temperature air-conduction vacuum freeze dryer, offers advantages such as cleaning and drying the conveyor belt, ensuring hygiene, and improving the device's efficiency, effectively solving the problems and shortcomings of existing technologies and equipment.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-temperature air-conduction vacuum freeze dryer, comprising: The components are: housing (1), conveyor belt (2), evaporator (3), circulating fan (4), water tray (5), drain pipe (6), baffle (7), spray pipe (8), nozzle (9), tee connector (10), valve (11), rotating cleaning component (12), drive motor (13), scraper (14), airflow distribution hood (15), heating pipe (16), blower (17), airflow collection hood (18), and return air pipe (19); characterized in that: the conveyor belt (2) passes through... The conveyor belt (2) extends out of the box (1) at both ends; the evaporators (3) are arranged at intervals along the conveying direction of the conveyor belt (2), and each evaporator (3) is equipped with a circulating fan (4); the water receiving tray (5) is installed below the conveyor belt (2), and the lower part of the water receiving tray (5) is connected to a drain pipe (6); the baffle (7) is installed on one side of the conveyor belt (2); the water spray pipe (8) is set between the upper and lower layers of the conveyor belt (2), and the water spray pipe (8) is... The conveyor belt (2) is equipped with multiple downward-spraying nozzles (9); the water spray pipe (8) is connected to the water source and the air source respectively through a three-way connector (10) and a valve (11); the rotating cleaning component (12) is rotatably arranged below the nozzles (9), and the rotating cleaning component (12) is driven by a drive motor (13) and abuts against the surface of the conveyor belt (2); the scraper (14) is arranged downstream of the rotating cleaning component (12); the airflow distribution cover (15) is fixedly arranged on the conveyor belt (2). Downstream of the scraper (14) between the upper and lower layers, and the air outlet of the air distribution hood (15) faces downward; the heating tube (16) is fixed inside the air distribution hood (15); the blower (17) is fixed on the outside of the baffle (7), and the air outlet of the blower (17) is connected to the air distribution hood (15); the air collection hood (18) is set below the air distribution hood (15); the air collection hood (18) is connected to the air inlet of the blower (17) through the return air pipe (19).

2. The low-temperature air conduction vacuum freeze dryer according to claim 1, characterized in that: The air outlet of the airflow distribution hood (15) is a tapered flow guide structure.

3. The low-temperature air conduction vacuum freeze dryer according to claim 1, characterized in that: The upper part of the airflow collection hood (18) is a vertical guide section, and the lower part is a conical converging section.

4. A low-temperature air conduction vacuum freeze dryer according to claim 1, characterized in that: The rotating cleaning component (12) is a roller structure with a flexible cleaning medium on its surface.

5. A low-temperature air-conduction vacuum freeze dryer according to claim 1, characterized in that: The scraper (14) is a plate-like structure with a soft edge at the top.

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