CN215002576U

CN215002576U - Pulsating vacuum pressure difference drying and freeze-drying equipment

Info

Publication number: CN215002576U
Application number: CN202121280974.1U
Authority: CN
Inventors: 王海凤
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2021-12-03
Anticipated expiration: 2031-06-08

Abstract

The utility model discloses a dry freeze-drying equipment of pulsation vacuum pressure differential, including vacuum tank and a plurality of drying can, the lateral wall parcel of drying can has hollow intermediate layer, intercommunication valve and vacuum tank intercommunication are passed through to the one end of drying can, every drying can is provided with the pressure-relief valve respectively, vacuum tank one side is provided with the vacuum pump that is used for vacuum tank evacuation, the air compressor machine passes through intercommunication in compressed air pipeline and every drying can, compressed air pipeline is provided with the compressed air solenoid valve respectively with drying can intercommunication position, high low temperature conduction oil reation kettle communicates through the heat transfer drying device in supply line and every intermediate layer and the drying can, supply line and every intermediate layer, heat transfer drying device intercommunication position is provided with the supply solenoid valve respectively, high low temperature conduction oil reation kettle still communicates through return line and every intermediate layer and heat transfer drying device. The utility model discloses constancy of temperature and even, drying effect is good, and the yields is high, solves material form and color finished product problem itself, realizes that an equipment can process multiple material.

Description

Pulsating vacuum pressure difference drying and freeze-drying equipment

Technical Field

The utility model relates to a food processing equipment, a pulsation vacuum pressure differential drying freeze-drying equipment specifically says so.

Background

Vegetables and fruits are important sources of mineral substances, vitamins and dietary fiber nutrients of human bodies. China is a large country for producing fruits and vegetables, due to the fact that fruits and vegetables are high in seasonality and excessive in production, due to the fact that roads are blocked under special conditions such as rain and snow, a large number of agricultural products are lost, most of the agricultural products are not beneficial to storage, and resource waste is caused. The material is dehydrated in a vacuum oil-free state, and the variable-temperature differential-pressure puffing equipment is in a popular state, but the limitation of the current equipment technology causes less material processing varieties, insufficient product phases and unbalanced color.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model aims to provide a drying and freeze-drying equipment with pulsating vacuum pressure difference

In order to achieve the above purpose, the technical scheme of the utility model is that: a kind of pulsating vacuum pressure difference dries the freeze-drying apparatus, including vacuum tank and multiple drying tanks, the outer sidewall of the drying tank wraps up the hollow intermediate layer, the body of the intermediate layer is that 4MM-8MM stainless steel plate turns round, weld in the periphery of pan body, the top of the intermediate layer opens and has multiple long notches, or round notch, can also open on the bottom according to the material technological need heating mode, or two sides of left and right sides, used for entering heating medium (steam, water, heat conduction oil, etc.), the bottom surface sets up the discharge port of the pipeline, is used for discharging the heating cooling medium (steam, water, heat conduction oil, etc.), set up the drain outlet below the pan body and is used for discharging the internal medium of heater; the inner container of the drying tank body is 304 stainless steel, and the thickness is as follows: 6-8mm and the inner diameter of the tank body is 1000 mm;

one end of the drying tank is communicated with the vacuum tank through a communicating valve, the other end of the drying tank is provided with a tank door, each drying tank is provided with a pressure relief valve, one side of the vacuum tank is provided with a vacuum pump for vacuumizing the vacuum tank, an air compressor is communicated with each drying tank through a compressed air pipeline, a compressed air electromagnetic valve is arranged at the communication part of the compressed air pipeline and the drying tank, the high-low temperature heat conduction oil reaction kettle is communicated with each interlayer and a heat exchange drying device in the drying tank through a supply pipeline, the supply pipeline is provided with a supply electromagnetic valve respectively at the communication part of each interlayer and the heat exchange drying device, the high-low temperature heat conduction oil reaction kettle is also communicated with each interlayer and the heat exchange drying device through a return pipeline, and each branch of the return pipeline is provided with a return electromagnetic valve respectively at the communication part of each interlayer and the heat exchange drying device;

the heat exchange drying device comprises hollow bent pipes with two symmetrical ends and a plurality of horizontal hollow long pipes communicated with the hollow bent pipes with two symmetrical ends, wherein the hollow long pipes with the left and right symmetrical ends are communicated through a plurality of horizontal hollow short pipes, so that the hollow bent pipes, the hollow long pipes and the hollow short pipes form a communicated multi-layer frame structure.

Furthermore, a lateral pot body center temperature measuring temperature sensor is respectively arranged at the left and right center openings of two sides of each drying tank or the center part of one side.

Furthermore, one end of the drying tank is provided with a tank door which can be buckled on a flange of the opening of the tank body through a crank arm, and the tank door is fixed through manual interlocking or automatic interlocking.

Furthermore, two sides of the bottom of each drying tank are respectively supported with a support leg.

Further, the bottom and the top of the interlayer are respectively provided with a notch for entering and exiting the heating medium.

Further, a heat-resistant fan for forming a circulating air flow is arranged in the drying tank.

Further, the heat conducting medium communicated with the supply pipeline, the return pipeline, the interlayer and the heat exchange drying device of the high-low temperature heat conducting oil reaction kettle is one of water and heat conducting oil.

Compared with the prior art, the utility model has the advantages of as follows:

1. the temperature rising and reducing speed is high, the crispness of the food is good, the setting color is good, the storage time period is long, and the production period is short.

2. Realizes the mutual butt joint and joint production of vacuum drying, differential pressure puffing and freeze-drying processes, and can realize the multifunction of equipment.

3. The structure design is reasonable, no wearing parts exist, and the production cost is reduced. The heat exchange temperature is controlled evenly through the inner and outer (inner heat exchange drying device and outer interlayer), and the color and luster of the product material are consistent.

4. The utility model discloses overall structure is stable does not have the leakage, and the clearance of being convenient for is washd to inside moreover.

Drawings

The present invention will now be further described with reference to the accompanying drawings.

Fig. 1 is a schematic view of the structure of the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 is a schematic perspective view of the heat exchange drying device of the present invention;

fig. 4 is a schematic view of the heat exchange drying device according to the present invention.

Detailed Description

As shown in fig. 1-4, a drying and freeze-drying device with pulsating vacuum pressure difference comprises a vacuum tank 1 and a plurality of drying tanks 2, wherein the outer side wall of each drying tank 2 is wrapped with a hollow interlayer 10, in order to further preserve heat, the outside of the interlayer 10 can be wrapped with heat preservation materials, one end of the drying tank 2 is communicated with the vacuum tank 1 through a communicating valve 7, the other end of the drying tank 2 is provided with a tank door 6, each drying tank 2 is respectively provided with a pressure relief valve, one side of the vacuum tank 1 is provided with a vacuum pump 3 for vacuumizing the vacuum tank 1, the vacuum pump 3 and the Roots pump set are combined into a bipolar vacuum pump for use, one end of the drying tank 2 is provided with a tank door 6 which can be buckled on an opening flange of the tank body through a crank arm, the tank door 6 is fixed through manual interlocking or automatic interlocking, two sides of the bottom of each drying tank 2 are respectively supported with a support leg, and the bottom and the top of the interlayer 10 are respectively provided with a notch for feeding and discharging a heating medium;

the air compressor 4 is communicated with the interior of each drying tank 2 through a compressed air pipeline 14, a compressed air electromagnetic valve 8 is arranged at the communication part of the compressed air pipeline 14 and the drying tanks 2 respectively, the high-low temperature heat conduction oil reaction kettle 5 is communicated with each interlayer 10 and a heat exchange drying device in the drying tanks 2 through a supply pipeline 15, a supply electromagnetic valve 16 is arranged at the communication part of the supply pipeline 15, each interlayer 10 and the heat exchange drying device respectively, the high-low temperature heat conduction oil reaction kettle 5 is also communicated with each interlayer 10 and the heat exchange drying device through a return pipeline 17, and a return electromagnetic valve 9 is arranged at the communication part of each branch of the return pipeline 17, each interlayer 10 and the heat exchange drying device respectively;

the heat exchange drying device comprises a hollow bent pipe 18 with two symmetrical ends and a plurality of horizontal hollow long pipes 11 which are communicated with the hollow bent pipe 18 with two symmetrical ends in a drying tank 2, the hollow long pipes 11 with bilateral symmetry are communicated through a plurality of horizontal hollow short pipes 13, so that the hollow bent pipes 18 are made, the hollow long pipes 11 and the hollow short pipes 13 form a multi-layer frame structure which is communicated, the hollow bent pipes 18, the hollow long pipes 11 and the hollow short pipes 13 are welded by adopting seamless stainless steel pipes made of 304 materials, the heat exchange drying device is formed by welding the seamless hollow bent pipes 18, the hollow short pipes 13 and the vertical hollow long pipes 11 in a cross mode, the heat exchange drying device can be based on the size of equipment, the material is increased in level, and the temperature is guaranteed to be balanced and stable.

The automatic control system adopts PLC control, the stability of electrical components is strong, and the electric control system and the software system can adopt the prior art.

In order to facilitate the mastering of the temperature in each drying tank 2, the central parts of the two sides of each drying tank 2 are respectively provided with a lateral pot body central temperature measuring temperature sensor 12.

In order to make the internal heat exchange more uniform, a heat-resistant fan for forming a circulating air flow is provided in the drying tank 2.

The heat conducting medium communicated with the supply pipeline 15, the return pipeline 17, the interlayer 10 and the heat exchange drying device of the high-low temperature heat conducting oil reaction kettle 5 is one of water, steam and heat conducting oil, and steam can be adopted during heating.

The utility model discloses the theory of operation: the heating mode of the drying tanks 2 adopts a high-low temperature heat conduction oil reaction kettle 5 of heat conduction oil, which is also called a kinetic energy converter, a heat conduction oil cooling and heating all-in-one machine and the like, the cooled or heated heat conduction oil is sent into equipment for cooling or heating, the materials are subjected to temperature change dehydration through a heating mode of kinetic energy exchange circulating flow, one high-low temperature heat conduction oil reaction kettle 5 is most practical in effect for every two drying tanks 2, the heat conduction oil enters from the bottom, the circulating flow is realized from the top, the temperature control balance is achieved, the temperature rising and falling speed is rapid, and the reforming combination effect is realized on the whole processing technology;

the heat exchange drying device is arranged in the drying tank 2 and exchanges heat inside the drying tank 2, the heat exchange drying device is formed by communicating a plurality of hollow pipes and forms a frame structure, the heat exchange is more comprehensive and more uniform, the heat exchange can be ensured to be carried out fully in the drying tank 2, the material is placed in the drying tank 2, the temperature in the drying tank 2 is raised through the high-low temperature heat-conducting oil reaction kettle 5, the moisture of the material in the drying tank 2 is continuously evaporated under a high-temperature heated state, the pressure in the drying tank 2 is increased, the pressure in the bin can be further increased by starting the air compressor 4, after the high pressure is maintained for a period of time, the pressure relief valve is rapidly opened, the vacuum pump 3 is vacuumized to enable the pressure in the drying tank 2 to be instantly reduced, the moisture in the material is instantly evaporated, the internal tissue of the fruits and vegetables is rapidly expanded to form a honeycomb structure, then the material enters a vacuum drying stage, the heating is stopped after the vacuum drying moisture reaches the required safe moisture content for a period of time, the normal pressure state is recovered for room temperature after leading through heat conduction oil medium to drying cylinder 2 internal temperature in high low temperature conduction oil reation kettle 5, and technical scheme more than adopting, constancy of temperature and even, drying effect is good, and the yields is high, solves material form and color finished product problem itself, realizes that a equipment can process multiple material.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims

1. The utility model provides a dry freeze-drying equipment of pulsation vacuum pressure differential which characterized in that: the vacuum drying system comprises a vacuum tank (1) and a plurality of drying tanks (2), hollow interlayers (10) are wrapped on the outer side walls of the drying tanks (2), one ends of the drying tanks (2) are communicated with the vacuum tank (1) through communicating valves (7), tank doors (6) are arranged at the other ends of the drying tanks (2), a pressure relief valve is arranged on each drying tank (2), a vacuum pump (3) used for vacuumizing the vacuum tank (1) is arranged on one side of the vacuum tank (1), an air compressor (4) is communicated with each drying tank (2) through a compressed air pipeline (14), compressed air pipelines (14) are respectively provided with compressed air electromagnetic valves (8) at the communicating positions of the drying tanks (2) and high-low-temperature heat conduction oil reaction kettles (5) are communicated with each interlayer (10) and a heat exchange drying device in each drying tank (2) through supply pipelines (15), and each interlayer (10) are communicated through the supply pipelines (15), and the drying tanks (2), A supply electromagnetic valve (16) is respectively arranged at the communication part of the heat exchange drying device, the high-low temperature heat conduction oil reaction kettle (5) is also communicated with each interlayer (10) and the heat exchange drying device through a return pipeline (17), and each branch of the return pipeline (17) is respectively provided with a return electromagnetic valve (9) at the communication part of the interlayer (10) and the heat exchange drying device;

the heat exchange drying device comprises hollow bent pipes (18) with two symmetrical ends and a plurality of horizontal hollow long pipes (11) communicated with the hollow bent pipes (18) with two symmetrical ends in a drying tank (2), wherein the hollow long pipes (11) with the left and right symmetrical ends are communicated through a plurality of horizontal hollow short pipes (13), so that the hollow bent pipes (18), the hollow long pipes (11) and the hollow short pipes (13) form a communicated multilayer frame structure.

2. The pulsating vacuum pressure differential drying freeze-drying apparatus of claim 1, wherein: the central parts of the two sides of each drying tank (2) are respectively provided with a lateral temperature measuring temperature sensor (12).

3. The pulsating vacuum pressure differential drying freeze-drying apparatus of claim 1, wherein: one end of the drying tank (2) is provided with a tank door (6) which can be buckled on the flange of the opening of the tank body through a crank arm, and the tank door (6) is fixed through manual interlocking or automatic interlocking.

4. The pulsating vacuum pressure differential drying freeze-drying apparatus of claim 1, wherein: two sides of the bottom of each drying tank (2) are respectively supported with a support leg.

5. The pulsating vacuum pressure differential drying freeze-drying apparatus of claim 1, wherein: notches for feeding and discharging the heating and refrigerating medium are respectively arranged at the bottom and the top of the interlayer (10).

6. The pulsating vacuum pressure differential drying freeze-drying apparatus of claim 1, wherein: a heat-resistant fan for forming circulating air flow is arranged in the drying tank (2).

7. The pulsating vacuum pressure differential drying freeze-drying apparatus of claim 1, wherein: the heat conducting medium communicated with the high-low temperature heat conducting oil reaction kettle (5), the supply pipeline (15), the return pipeline (17), the interlayer (10) and the heat exchange drying device is one of water and heat conducting oil.