Search

CN-224230592-U - Low-temperature air conduction type vacuum freeze dryer

CN224230592UCN 224230592 UCN224230592 UCN 224230592UCN-224230592-U

Abstract

The utility model relates to the technical field of speed machines, in particular to a low-temperature air conduction type vacuum freeze dryer which comprises a water spraying pipe and a spray nozzle, wherein the water receiving tray is arranged below a conveying mesh belt, the water spraying pipe is arranged between the upper layer and the lower layer of the conveying mesh belt, the spray nozzle is provided with a plurality of spray nozzles which spray downwards, the water spraying pipe is respectively connected with a water source and an air source through a three-way connector and a valve, the rotary cleaning part is rotatably arranged below the spray nozzle, the scraping plate is arranged at the downstream of the rotary cleaning part, the air flow distribution cover is fixedly arranged at the downstream of the scraping plate between the upper layer and the lower layer of the conveying mesh belt, and the air outlet of the air flow distribution cover faces downwards.

Inventors

  • HAN LEI

Assignees

  • 韩磊

Dates

Publication Date
20260512
Application Date
20250402

Claims (5)

  1. 1. A low-temperature air conduction type vacuum freeze dryer comprises a box body (1), a conveying mesh belt (2), evaporators (3), a circulating fan (4), water receiving discs (5), a drain pipe (6), a baffle plate (7), spray pipes (8), spray heads (9), three-way connectors (10), valves (11), rotary cleaning components (12), a driving motor (13), scraping plates (14), an air flow distribution cover (15), heating pipes (16), a blower (17), an air flow collecting cover (18) and an air return pipe (19), and is characterized in that the conveying mesh belt (2) penetrates through the box body (1) and two ends of the conveying mesh belt (2) extend out of the box body (1), the evaporators (3) are arranged at intervals along the conveying direction of the conveying mesh belt (2), the circulating fan (4) is arranged on each evaporator (3), the water receiving discs (5) are arranged below the conveying mesh belt (2), the lower portions of the water receiving discs (5) are connected with the drain pipes (6), the baffle plates (7) are arranged on one side of the conveying mesh belt (2), the spray pipes (8) are arranged between the upper layers and the lower layers of the conveying mesh belt (2), the water spraying pipe (8) is provided with a plurality of spray heads (9) which spray downwards, the water spraying pipe (8) is connected with a water source and a gas source through a three-way joint (10) and a valve (11), the rotary cleaning component (12) is rotatably arranged below the spray heads (9) and is driven by a driving motor (13) to abut against the surface of the conveying net belt (2), the scraping plate (14) is arranged at the downstream of the rotary cleaning component (12), the gas distribution cover (15) is fixedly arranged at the downstream of the scraping plate (14) between the upper layer and the lower layer of the conveying net belt (2) and the gas outlet of the gas distribution cover (15) faces downwards, the heating pipe (16) is fixedly arranged in the gas distribution cover (15), the air blower (17) is fixedly arranged at the outer side of the baffle plate (7) and is connected with the gas outlet of the air blower (17) and is arranged below the gas distribution cover (15), and the gas collection cover (18) is connected with the gas inlet of the air blower (17) through a gas return pipe (19).
  2. 2. The vacuum freeze dryer of claim 1, wherein the air outlet of the air distribution cover (15) is of a tapered flow guiding structure.
  3. 3. A low temperature air conduction vacuum freeze dryer as claimed in claim 1 wherein the upper part of the air flow collection cover (18) is a vertical diversion section, and the lower part is a conical convergence section.
  4. 4. A low temperature air conduction vacuum freeze dryer as claimed in claim 1 wherein the rotary cleaning member (12) is a roll-like structure having a flexible cleaning medium disposed on a surface thereof.
  5. 5. A low temperature air conduction type vacuum freeze dryer as claimed in claim 1 wherein the scraper (14) is of a plate-like structure with a soft edge at the upper part.

Description

Low-temperature air conduction type vacuum freeze dryer Technical Field The utility model relates to the technical field of quick-freezing devices, in particular to a low-temperature air conduction type vacuum freeze dryer. Background The vacuum freeze-drying technology utilizes the tri-state change principle of low-temperature low-pressure water to cool and freeze the material to be dried, so that liquid water in the material is changed into solid ice, and then the material is heated under the vacuum condition, so that the ice is sublimated directly into water vapor to be removed, and a low-temperature dehydrated dried product is obtained. Before the materials are dried, quick-freezing treatment is needed, the materials are generally placed on a conveyor belt by the conventional quick-freezing equipment, quick-freezing is realized through a quick-freezing box, residues and frost are easy to adhere to the surface of the conveyor belt, the use sanitation is affected, and the running resistance of the conveyor belt is increased. In view of the above, the present invention provides a low-temperature air conduction type vacuum freeze dryer which solves the problems and improves the practical value. Disclosure of utility model The utility model aims to provide a low-temperature air conduction type vacuum freeze dryer so as to solve the problems and the defects in the background technology. In order to achieve the above purpose, the utility model provides a low-temperature air conduction type vacuum freeze dryer, which is achieved by the following specific technical means: A low-temperature air conduction type vacuum freeze dryer comprises a box body, a conveying mesh belt, an evaporator, a circulating fan, a water receiving disc, a drain pipe, a baffle plate, a water spraying pipe, a spray head, a three-way joint, a valve, a rotary cleaning component, a driving motor, a scraping plate, an air flow distribution cover, a heating pipe, a blower, an air flow collection cover and an air return pipe; the conveying net belt penetrates through the box body, two ends of the conveying net belt extend out of the box body, the evaporators are arranged at intervals along the conveying direction of the conveying net belt, circulating fans are arranged on the evaporators, the water receiving disc is arranged below the conveying net belt, the lower portion of the water receiving disc is connected with a drain pipe, the baffle plate is arranged on one side of the conveying net belt, the water spraying pipe is arranged between the upper layer and the lower layer of the conveying net belt, a plurality of spray heads which spray downwards are arranged on the water spraying pipe, the water spraying pipe is respectively connected with a water source and a gas source through a three-way joint and a valve, the rotary cleaning part is arranged below the spray heads in a rotating mode, the rotary cleaning part is driven by a driving motor and is in contact with the surface of the conveying net belt, the scraping plates are arranged at the downstream of the rotary cleaning part, the gas distribution cover is fixedly arranged at the downstream of the scraping plates between the upper layer and the lower layer of the conveying net belt, the gas outlet of the gas distribution cover faces downwards, the blower is fixedly arranged in the gas distribution cover, the air outlet of the blower is fixedly arranged on the outer side of the baffle plate, the blower is connected with the gas distribution cover, the gas outlet of the blower is respectively connected with the gas distribution cover, the gas collecting cover is arranged below the gas distribution cover, and the gas distribution cover is connected with the gas inlet of the gas collector through the gas return pipe. As a further optimization of the technical scheme, the air outlet of the air flow distribution cover of the low-temperature air conduction type vacuum freeze dryer is of a tapered flow guiding structure. As a further optimization of the technical scheme, the upper part of the airflow collecting cover of the low-temperature air conduction type vacuum freeze dryer is provided with a vertical flow guiding section, and the lower part of the airflow collecting cover is provided with a conical converging section. As a further optimization of the technical scheme, the rotary cleaning component of the low-temperature air conduction type vacuum freeze dryer is of a roller-shaped structure with flexible cleaning media arranged on the surface. As a further optimization of the technical scheme, the scraper of the low-temperature air conduction type vacuum freeze dryer is of a plate-shaped structure with a soft edge at the upper part. Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: 1. The water spraying pipe is arranged between the upper layer and the lower layer of the conveying net belt, a plurality of spray head