CN219368153U

CN219368153U - Vacuum drying equipment

Info

Publication number: CN219368153U
Application number: CN202320587169.6U
Authority: CN
Inventors: 李军; 王海民; 耿旭伟
Original assignee: Baoding Haikang Food Manufacturing Co ltd
Current assignee: Baoding Haikang Food Manufacturing Co ltd
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2023-07-18
Anticipated expiration: 2033-03-23

Abstract

The utility model relates to the technical field of food processing, and particularly discloses vacuum drying equipment, which comprises a drying box, wherein a drying table and a heating pipe positioned at the bottom of the drying table are arranged in the drying box, a feeding end and a discharging end are arranged at the front and the back of the drying box, an air suction hole is formed in the top of the drying box, a vacuum sealing valve is arranged at the feeding end, and a pressure door is arranged at the discharging end; the vacuumizing device is connected with the drying box and is used for vacuumizing the drying box; the feeding device is positioned at the feeding end of the drying box and is in sealing and isolating connection with the drying box; and the air extraction unit is arranged at an air extraction hole at the top of the drying box and is used for extracting water and air. The vacuum drying equipment provided by the utility model can dry food materials in a certain vacuum environment, effectively improve the drying effect and improve the drying efficiency.

Description

Vacuum drying equipment

Technical Field

The utility model belongs to the technical field of food processing, and particularly relates to vacuum drying equipment.

Background

In food processing enterprises, the processing of fruit and vegetable series products often involves the link of drying and dewatering, such as seasoning powder, fruit and vegetable powder, prepared vegetables and the like, and due to the large quantity and variety of industrial processing, professional drying equipment is generally adopted for dewatering.

In the existing drying equipment, the low-temperature drying technology has wide application because of the advantage of keeping the original taste of food to a large extent, however, the existing low-temperature drying equipment has low efficiency and cannot take into account the dual functions of quick drying and effective food quality keeping.

Disclosure of Invention

In view of the above, the present utility model provides a vacuum drying apparatus, which comprises:

a vacuum drying apparatus comprising:

the drying box is internally provided with a drying table and a heating pipe positioned at the bottom of the drying table, the front and the rear of the drying box are provided with a feeding end and a discharging end, the top of the drying box is provided with a suction hole, the feeding end is provided with a vacuum sealing valve, and the discharging end is provided with a pressure door;

the vacuumizing device is connected with the drying box and is used for vacuumizing the drying box;

the feeding device is positioned at the feeding end of the drying box and is in sealing and isolating connection with the drying box;

and the air extraction unit is arranged at an air extraction hole at the top of the drying box and is used for extracting water and air.

The utility model aims to provide drying equipment with a vacuumizing function, so that food materials are dried in a certain vacuum environment, the drying effect can be effectively improved, and the drying efficiency can be improved.

Optionally, the number of the air extracting units is multiple, and the air extracting units are uniformly distributed at the top of the drying box; can evenly bleed to each position of drying cabinet.

Optionally, a one-way sealing valve is arranged at the air extraction unit; when the air extraction unit is in a non-working state, the air extraction hole can be sealed, and the vacuum environment inside the drying box is prevented from being damaged.

Optionally, a humidity sensor is arranged at the air suction hole; the device is used for monitoring the humidity value of the air pumped out from the air pumping hole so as to judge the drying condition of the material at the position and the humidity condition in the whole drying box.

Optionally, the bottom that the drying bench is close to the feed end is equipped with lifting mechanism, lifting mechanism can make the drying bench slope to the discharge end direction.

Optionally, a pushing component is arranged at the top of the drying table, and the pushing component reciprocates from a feeding end to a discharging end; the pushing component is contacted with the drying table surface and can be used as a discharging component for pushing materials out of the drying box.

Optionally, the pushing component is provided with a lifting mechanism, so that the pushing component can be lifted away from the drying table for a certain distance; the pushing component has a distance lifting function, and when the pushing component is lifted, the pushing component has a certain distance from the drying table and can be used as a material distribution component for uniformly spreading materials on the drying table.

Optionally, a centrifugal dehydration device is further arranged between the feeding device and the drying box; the material is pre-dehydrated before entering the drying box, and the moisture on the surface of the material is removed.

Optionally, a spin-drying screen frame is arranged in the centrifugal dehydration device and is driven by a rotary motor; the material is driven by the spin-drying net frame to rotate at high speed, and the water on the surface of the material is removed under the action of centrifugal force.

Optionally, a feed valve is arranged between the centrifugal dehydration device and the feed device; a discharge valve is arranged between the centrifugal dewatering device and the drying box; the feed valve can control the amount of material entering the centrifugal dewatering device, and the discharge valve can control the amount of material entering the drying box.

Compared with the prior art, the vacuum drying equipment has the following beneficial effects:

the materials are dried under the vacuum condition to replace the traditional drying equipment; the centrifugal pre-dehydration is carried out before the vacuum drying, so that the technical problem that the low-temperature drying effect and the drying efficiency cannot be considered can be solved, and meanwhile, the quality of the food material can be maintained to the greatest extent; the water content of the food and the condiment prepared by the drying equipment and the drying method can be reduced to between 2 and 5 percent, and meanwhile, the drying efficiency is improved by about 20 percent.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

fig. 2 is a top view of a drying box in an embodiment of the utility model.

In the figure, a 1-feeding device, a 11-feeding valve, a 2-centrifugal dehydration device, a 21-discharging valve, a 3-drying box, a 31-vacuum sealing valve, a 32-drying table, a 33-heating pipe, a 34-air extraction unit, a 35-pressure door and a 4-vacuumizing device.

Detailed Description

For a better understanding of the objects, structures and functions of the present utility model, a vacuum drying apparatus according to the present utility model will be described in further detail with reference to the accompanying drawings.

The embodiment provides a vacuum drying device, referring to fig. 1, which is mainly used for drying and dehydrating food and seasonings, and comprises a drying box 3 with a main structure and a centrifugal dehydration device 2 arranged at the front end of the drying box 3 for pre-dehydrating materials; wherein, the top of the centrifugal dehydration device 2 is provided with a feeding device 1, the feeding device 1 can adopt a funnel-shaped electric feeding structure in the prior art, a feeding valve 11 is arranged between the feeding device 1 and the centrifugal dehydration device 2 to control the amount of materials entering the centrifugal dehydration device 2, the centrifugal dehydration device 2 is driven by a high-speed rotating motor, a spin-drying screen frame is arranged in the device, the materials are driven by the spin-drying screen frame to rotate at a high speed, and the moisture on the surfaces of the materials is removed under the action of centrifugal force; the discharge end of the centrifugal dehydration device 2 is connected with a drying box 3, a discharge valve 21 is arranged at the discharge port of the centrifugal dehydration device 2, and the amount of materials in the drying box 3 is controlled. A drying table 32 is arranged in the drying box 3, the materials are flatly paved above the drying table 32 for drying, a heating pipe 33 is arranged below the drying table 32, and the materials are heated through heating equipment and temperature control equipment; in order to enable materials to be dried rapidly, the whole drying box 3 adopts a structural design capable of being vacuumized, a vacuumizing device 4 is arranged outside the drying box 3, a vacuum sealing valve 31 is arranged at the inlet end of the drying box, a pressure door 35 is arranged at the outlet end of the drying box, the vacuumizing device 4 can be used for carrying out pressure sealing, the drying box is vacuumized according to process setting, the inside of the drying box is enabled to reach and maintain stable vacuum degree, and then moisture in the material is evaporated rapidly under the heating of a heating pipe 33. A plurality of air extraction holes are arranged at the top of the drying box 3 corresponding to each position of the drying table 32, and air extraction units 34 are connected outside the air extraction holes and are used for extracting evaporated water from the drying box.

In this embodiment, in order to monitor the drying effect in real time and monitor the local drying conditions at each position of the drying table 32, a humidity sensor is further disposed in the air extraction hole, and is used to monitor the humidity value of the air extracted from the air extraction hole, so as to determine the drying condition of the material at the position and the humidity condition in the whole drying box.

In this embodiment, as shown in fig. 2, 6 air suction holes, i.e., air suction units 34, are provided at the top of the drying box 3, at the four corners of the top, and at the two edges of the middle of the long side, respectively.

In this embodiment, the pressure door 35 can be opened rapidly to take out the material in the drying oven 3, and for this reason, the pressure door 35 is connected by a connection manner of staggered engagement with the oven body of the drying oven 3, so that the purpose of bearing the pressure difference between the inside and outside can be achieved, and the opening and closing are convenient.

In some embodiments, an automatic collection device may be provided outside the pressure gate 35, and after the drying of the material is completed, the material is automatically sent out and collected.

In this embodiment, for facilitating the material taking out, the bottom of the drying table 32 near the feeding end is provided with a lifting mechanism, so that the side of the drying table 32 can be lifted, the drying table 32 is in an inclined state, and the material is conveniently sent out to the outlet end.

In this embodiment, a pushing component is provided at the top of the drying table 32, where the pushing component has a distance lifting function, and when the pushing component lifts up, the pushing component has a certain distance from the drying table 32, and can be used as a material distribution component for uniformly spreading the material on the drying table 32, and when the pushing component sinks, the pushing component is in surface contact with the drying table 32, and can be used as a material discharging component for pushing the material out of the drying box 3.

In the present embodiment, the heating pipes 33 are provided in two front and rear parts which can be controlled individually, so that individual temperature control is performed at different positions.

In this embodiment, the air extraction unit 34 is provided with a one-way sealing valve, so that the air extraction unit 34 can maintain sealing of the air extraction hole when in a non-working state, and the vacuum environment inside the drying oven 3 is prevented from being damaged.

The working principle of the embodiment is as follows:

the material enters the centrifugal dehydration device 2 through the feeding device 1 to be pre-dehydrated, the moisture on the surface of the material is removed, the material enters the drying box 3, the vacuum sealing valve 31 is closed, the vacuumizing device 4 is started to enable the inside of the drying box 3 to reach and keep stable vacuum degree, then the heating pipe 3 is heated, the material paved on the drying table 32 is dried, and the moisture is pumped out through the air pumping unit 34. After the material is dried, the vacuum sealing valve 31 is opened, and then the pressure door 35 is opened, so that the material is taken out from the drying oven 3.

The vacuum degree of the vacuumizing device 4 can be adjusted according to different materials, and the vacuumizing device is respectively carried out under the preferable vacuum condition according to the requirements of different water contents. Experiments prove that the water content of the finally obtained materials can be reduced to 2% -5% by drying pumpkin powder and purple sweet potato powder under the condition of 0.03-0.06 MPa of vacuum degree.

The technical effects of the present embodiment are described in the summary section, and are not described herein.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. A vacuum drying apparatus, characterized by comprising:

a drying cabinet (3) is internally provided with a drying table (32) and a heating pipe (33) positioned at the bottom of the drying table (32), a feed end and a discharge end are arranged at the front and the back, an air suction hole is formed in the top of the drying cabinet, a vacuum sealing valve (31) is arranged at the feed end, and a pressure door (35) is arranged at the discharge end;

the vacuumizing device (4) is connected with the drying box (3) and is used for vacuumizing the drying box (3);

the feeding device (1) is positioned at the feeding end of the drying box (3) and is in sealing and isolating connection with the drying box (3);

and the air extraction unit (34) is arranged at an air extraction hole at the top of the drying box (3) and is used for extracting water and air.

2. Vacuum drying apparatus according to claim 1, characterized in that the number of air extraction units (34) is a plurality, evenly distributed on top of the drying cabinet (3).

3. Vacuum drying apparatus according to claim 1, characterized in that the suction unit (34) is provided with a one-way sealing valve.

4. A vacuum drying apparatus according to claim 1, 2 or 3, wherein a humidity sensor is provided at the suction hole.

5. Vacuum drying apparatus according to claim 1, characterized in that the drying table (32) is provided with a lifting mechanism near the bottom of the feed end, which lifting mechanism enables the drying table (32) to be tilted in the direction of the discharge end.

6. Vacuum drying apparatus according to claim 1 or 5, characterized in that a pushing assembly is provided on top of the drying table (32), which pushing assembly reciprocates from a feed end to a discharge end.

7. Vacuum drying apparatus according to claim 6, characterized in that the pushing assembly is provided with a lifting mechanism for lifting the pushing assembly a distance from the drying table (32).

8. Vacuum drying apparatus according to claim 1, characterized in that a centrifugal dewatering device (2) is also arranged between the feeding device (1) and the drying cabinet (3).

9. Vacuum drying apparatus according to claim 8, characterized in that the centrifugal dewatering device (2) is provided with a spin-drying screen frame, which is driven by a rotating motor.

10. Vacuum drying apparatus according to claim 8, characterized in that a feed valve (11) is provided between the centrifugal dewatering device (2) and the feed device (1); a discharge valve (21) is arranged between the centrifugal dewatering device (2) and the drying box (3).