Fruit and vegetable differential pressure puffing and drying equipment combining infrared heating and water circulation cooling

Abstract

The utility model belongs to the technical field of fruit and vegetable processing machinery, and relates to fruit and vegetable differential pressure puffing and drying equipment combining infrared heating with water circulation cooling. The equipment comprises a puffing tank, a heating device, a cooling pipe group, a water tank, a vacuum tank and a controller, a material rack is arranged in the puffing tank, and a material tray is arranged on the material rack; the heating device comprises a heating assembly arranged above the charging tray, and a first temperature sensor is arranged on the heating assembly; the cooling pipe group is spirally mounted around the rack and provided with an input end and an output end, the input end is connected with the water inlet pipe orifice, the output end is connected with the water outlet pipe orifice, the water outlet pipe orifice is connected with a second temperature sensor, and the water outlet pipe and the water inlet pipe are both connected with the water tank; pressure gauges are arranged on the vacuum tank and the puffing tank, and a pressure release valve is arranged between the vacuum tank and the puffing tank; the controller is electrically connected with the heating device, the temperature sensor, the pressure gauge and the pressure release valve. According to the equipment, infrared and water circulation are creatively combined, so that heating is uniform and rapid in the drying process, and cooling is convenient and efficient.

Description

Technical Field

[0001] The utility model belongs to the technical field of drying, and in particular relates to a pressure difference puffing drying device for fruits and vegetables combining infrared heating and water circulation cooling. Background Art

[0002] Fruit and vegetable drying is also a key technology for processing high-quality food and plays an important role in the food processing industry. The traditional drying process has high dehydration temperature and long time, which will destroy the nutrition and tissue structure of fruits and vegetables and has low production efficiency; high-quality production equipment is often too expensive and is not suitable for promotion and use.

[0003] The variable temperature and pressure difference puffing device for fruits and vegetables is to place the fruit and vegetable raw materials that have been pre-treated and part of the water is removed, and then place them in a variable temperature and pressure difference puffing tank to increase the temperature and pressurize them. After keeping them warm for a period of time, the pressure is released instantly, and the water inside the material is instantly vaporized and evaporated, and the material expands instantly, and is dehydrated and dried under a vacuum state, thereby producing natural fruit and vegetable puffed and dried foods with expanded volume and crisp taste. The pressure difference puffing drying equipment mainly uses steam as a heat source for heating, and heat is transferred by heat conduction. This heating method of contacting the material not only consumes too much energy in pre-heating the steam, but also loses heat during the heat transfer process, resulting in uneven heating of the material, affecting the drying effect. In addition, cooling is generally directly cooled by cold water or natural cooling, which leads to problems such as waste of water resources and slow drying process. Moreover, after puffing and drying, the current pressure difference puffing device is also more cumbersome in the discharging process, affecting production efficiency.

[0004] In summary, in order to solve the problems of slow heating, uneven heating, single cooling method, low efficiency and complicated process in the existing puffing and drying equipment, it is urgent to study an efficient fruit and vegetable pressure difference puffing and drying equipment to solve the above problems. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a fruit and vegetable pressure difference puffing drying equipment with infrared heating and water circulation cooling, which creatively combines infrared and water circulation to make the drying process heated evenly and quickly, and the cooling conveniently and efficiently.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] A fruit and vegetable pressure difference puffing and drying device with infrared heating combined with water circulation cooling, the fruit and vegetable pressure difference puffing and drying device is composed of a puffing tank, a heating device, a cooling pipe group, a water inlet pipe, a water outlet pipe, a water tank, a vacuum tank and a controller;

[0008] A multi-layer material rack is arranged in the expansion tank, and a material tray is arranged on the material rack;

[0009] The heating device comprises a heating assembly arranged above each material tray, and the heating assembly is also provided with a first temperature sensor;

[0010] The cooling tube group is spirally installed around the material rack, and the cooling tube group is provided with an input end and an output end;

[0011] The water inlet pipe is connected to the input end of the cooling tube group; the water outlet pipe is connected to the output end of the cooling tube group, and a second temperature sensor is connected to the outlet of the water outlet pipe;

[0012] One end of the water tank is connected to the water inlet pipe, and the other end is connected to the water outlet pipe; forming a water circulation cooling pipeline formed by the water inlet pipe, the cooling pipe group, the water outlet pipe and the water tank; while improving the cooling efficiency, it also saves water resources;

[0013] One end of the vacuum tank is connected to the expansion tank through a pipeline, and a pressure relief valve is provided on the connecting pipeline; the other end of the vacuum tank is connected to a vacuum pump through a pipeline, and a vacuum valve is provided on the connecting pipeline;

[0014] A first pressure gauge is provided on the expansion tank, and a second pressure gauge is provided on the vacuum tank;

[0015] The controller is electrically connected to the first pressure gauge, the second pressure gauge, the first temperature sensor, the second temperature sensor, the pressure relief valve and the vacuum valve respectively.

[0016] Furthermore, the material tray and the heating assembly in the puffing tank are arranged in parallel, which is more conducive to uniform heating and improves drying efficiency.

[0017] Furthermore, the material rack is in a hexagonal shape, and this design improves the space utilization rate in the puffing tank, which is conducive to cost saving.

[0018] Furthermore, the heating component is an infrared radiation plate; heating is performed by infrared radiation, the material is heated evenly, and installation is simple.

[0019] Furthermore, the infrared radiation panel is connected to a controller.

[0020] Furthermore, a water valve is provided on the water inlet pipe connected to the water tank.

[0021] Furthermore, the water valve is connected to a controller.

[0022] Furthermore, the water tank is provided with a refrigerant and a fan; the heat in the water is absorbed by the refrigerant, and the heat is dissipated into the external air by the cooling fan.

[0023] Furthermore, there is a water pump between the water tank and the water valve.

[0024] Furthermore, the water pump is connected to a controller.

[0025] The water tank described in the utility model adopts an air-cooled cooler to cool the water, and there is no need to build a large cooling tower, which greatly reduces the floor space, and is also very convenient to install, effectively saving economic and labor costs.

[0026] Beneficial effects of the utility model:

[0027] (1) The utility model can timely observe the temperature change through the controller by setting the temperature sensor, so that the drying process is simple and efficient. The first temperature sensor is set on the heating device, which can monitor the temperature in real time, thereby controlling the drying effect, reducing material loss and improving the drying efficiency. The second temperature sensor is set at the water outlet to monitor the real-time cooling condition of the equipment, so as to control the water valve through the controller to increase or decrease the flow rate, improve the utilization rate of water resources and speed up the drying process;

[0028] (2) The utility model cools the equipment and materials through water circulation cooling, which can save water resources and quickly and evenly reduce the temperature, thereby improving the working efficiency of the equipment, compared with single cold water cooling and natural cooling methods; moreover, the water circulation cooling pipeline has low maintenance cost and longer service life.

[0029] (3) The utility model utilizes an infrared radiation plate to heat the material by radiation, replacing the traditional steam heating method; the operation is simple and does not require medium heat transfer, and can achieve uniform heating of the heating area. In addition, the infrared radiation plate pipeline is relatively simple, which is conducive to cost control. The utility model creatively combines infrared and water circulation, solving the problems of low thermal efficiency and uneven heating of traditional differential pressure puffing drying equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is the front view of the utility model.

[0031] Figure 2 It is a side view of the utility model.

[0032] Figure 3 It is a schematic diagram of the cooling tube group structure in the utility model.

[0033] Wherein: 1-expansion tank, 2-material tray, 3-infrared radiation plate, 4-first pressure gauge, 5-water outlet pipe, 6-second temperature sensor, 7-controller, 8-pressure relief valve, 9-second pressure gauge, 10-vacuum valve, 11-vacuum pump, 12-vacuum tank, 13-first temperature sensor, 14-cooling pipe group, 15-material rack, 16-water inlet pipe, 17-water valve, 18-water pump, 19-water tank. DETAILED DESCRIPTION

[0034] Various exemplary embodiments of the present invention are now described in detail. This detailed description should not be considered as limiting the present invention, but should be understood as a more detailed description of certain aspects, features and embodiments of the present invention.

[0035] Unless otherwise specified, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art in the field of the utility model. Although the utility model only describes preferred methods and materials, any methods and materials similar or equivalent to those described herein may also be used in the implementation or testing of the utility model. All documents mentioned in this specification are incorporated by reference to disclose and describe methods and / or materials related to the documents. In the event of a conflict with any incorporated document, the content of this specification shall prevail.

[0036] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present invention without departing from the scope or spirit of the present invention. Other embodiments derived from the present invention will be apparent to those skilled in the art. The present invention description and examples are merely exemplary.

[0037] like Figure 1-3 As shown, a pressure difference puffing and drying equipment for fruits and vegetables with infrared heating combined with water circulation cooling is provided, and the pressure difference puffing and drying equipment for fruits and vegetables is composed of a puffing tank 1, a heating device, a cooling pipe group 14, a water inlet pipe 5, a water outlet pipe 16, a water tank 19, a vacuum tank 12 and a controller; wherein a material rack 15 is arranged in the puffing tank 1, and a material tray 2 is arranged on the material rack 15; wherein the material rack is in a hexagonal shape, and this design not only improves the space utilization rate in the puffing tank, but also helps to save costs.

[0038] The heating device includes a heating component arranged above each material tray 2, and the heating component is provided with a first temperature sensor 13, preferably a thermocouple temperature sensor; wherein the heating component is an infrared radiation plate 5, preferably a carbon fiber infrared radiation plate, which has the advantages of energy saving, safety and high precision; the infrared radiation plate 5 is fixed on the material rack 15, and is located directly above the material tray 2, and is arranged parallel to the material tray 2. Specifically, between the two parallel sides of the hexagonal material rack 15, they are arranged at intervals in the manner of infrared radiation plates, material trays, and infrared radiation plates, which is more conducive to uniform heating and improves drying efficiency.

[0039] The cooling tube group 14 is spirally installed around the material rack 15, and the cooling tube group 14 is provided with an input end and an output end; wherein the water inlet pipe 16 is connected to the input end of the cooling tube group 14; the water outlet pipe 5 is connected to the output end of the cooling tube group 14, and a second temperature sensor 6 is connected to the pipe mouth of the water outlet pipe 5; the second temperature sensor 6 is arranged above the infrared radiation plate; preferably, the second temperature sensor 6 is a thermocouple temperature sensor, which measures the temperature of the water outlet pipe 5 and feeds back to the controller, thereby controlling the water flow rate.

[0040] One end of the water tank 19 is connected to the water inlet pipe 16, and the other end is connected to the water outlet pipe 5; a water circulation cooling pipeline is formed by the water inlet pipe 16, the cooling pipe group 14, the water outlet pipe 16 and the water tank 19; one end of the vacuum tank 12 is connected to the expansion tank 1 through a pipeline, and a pressure relief valve 8 is provided on the connecting pipeline; the other end of the vacuum tank 12 is connected to the vacuum pump 11 through a pipeline, and a vacuum valve 10 is provided on the connecting pipeline;

[0041] A first pressure gauge 4 is provided on the expansion tank 1, and a second pressure gauge 9 is provided on the vacuum tank 12;

[0042] A water valve 17 is provided on the water inlet pipe 16 connected to the water tank 19; preferably, the water valve 17 is an electric or pneumatic valve.

[0043] Moreover, the water tank 19 is also provided with a refrigerant and a fan; the heat in the water is absorbed by the refrigerant, and the heat is dissipated into the external air by the cooling fan; preferably, the water tank 19 is an air-cooled refrigerator.

[0044] There is a water pump 18 between the water tank 19 and the water valve 17.

[0045] The controller 7 is electrically connected to the water pump 18, the water valve 17, the first temperature sensor 13, the second temperature sensor 6, the infrared radiation plate 5, the vacuum pump 11, the vacuum valve 10, the pressure relief valve 8, the first pressure gauge 4, and the second pressure gauge 9, respectively, to achieve real-time monitoring and control of the temperature and pressure of the puffing tank 1, the water flow, the temperature of the infrared radiation plate 5, and the pressure of the vacuum tank 12 during the pressure difference puffing and drying process.

[0046] Note: The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention; therefore, although this specification has described the present invention in detail with reference to the above embodiments, a person skilled in the art should understand that the present invention can still be modified or replaced by equivalents; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A fruit and vegetable pressure difference puffing and drying equipment with infrared heating combined with water circulation cooling, characterized in that: The fruit and vegetable pressure difference puffing and drying equipment comprises a puffing tank (1), a heating device, a cooling pipe group (14), a water inlet pipe (16), a water outlet pipe (5), a water tank (19), a vacuum tank (12) and a controller; A material rack (15) is provided in the expansion tank (1), and a material tray (2) is provided on the material rack (15); The heating device comprises a heating component arranged above each material tray (2), the heating component being provided with a first temperature sensor (13); The cooling tube group (14) is spirally installed around the material rack (15), and the cooling tube group (14) is provided with an input end and an output end; The water inlet pipe (16) is connected to the input end of the cooling pipe group (14); the water outlet pipe (5) is connected to the output end of the cooling pipe group (14), and a second temperature sensor (6) is connected to the pipe mouth of the water outlet pipe (5); One end of the water tank (19) is connected to the water inlet pipe (16), and the other end is connected to the water outlet pipe (5); forming a water circulation cooling pipeline formed by the water inlet pipe (16), the cooling pipe group (14), the water outlet pipe (5) and the water tank (19); One end of the vacuum tank (12) is connected to the expansion tank (1) via a pipeline, and a pressure relief valve (8) is provided on the connecting pipeline; the other end of the vacuum tank (12) is connected to a vacuum pump (11) via a pipeline, and a vacuum valve (10) is provided on the connecting pipeline; A first pressure gauge (4) is provided on the expansion tank (1), and a second pressure gauge (9) is also provided on the vacuum tank (12); The controller (7) is electrically connected to the first pressure gauge (4), the second pressure gauge (9), the first temperature sensor (13), the second temperature sensor (6), the pressure relief valve (8) and the vacuum valve (10), respectively.

2. The infrared heating combined with water circulation cooling pressure difference puffing and drying equipment for fruits and vegetables according to claim 1 is characterized in that: The material tray (2) and the heating component in the puffing tank (1) are arranged in parallel.

3. The infrared heating combined with water circulation cooling pressure difference puffing and drying equipment for fruits and vegetables according to claim 1 is characterized in that: The material rack (15) is in a hexagonal shape.

4. The infrared heating combined with water circulation cooling pressure difference puffing and drying equipment for fruits and vegetables according to claim 1 or 2, characterized in that: The heating component is an infrared radiation plate (3).

5. The infrared heating combined with water circulation cooling pressure difference puffing and drying equipment for fruits and vegetables according to claim 4 is characterized in that: The infrared radiation panel (3) is connected to a controller (7).

6. The infrared heating combined with water circulation cooling pressure difference puffing and drying equipment for fruits and vegetables according to claim 1, characterized in that: A water valve (17) is also provided on the water inlet pipe (16) connected to the water tank (19).

7. The infrared heating combined with water circulation cooling pressure difference puffing and drying equipment for fruits and vegetables according to claim 6, characterized in that: The water valve (17) is connected to the controller (7).

8. The infrared heating combined with water circulation cooling pressure difference puffing and drying equipment for fruits and vegetables according to claim 1 is characterized in that: The water tank (19) is provided with a refrigerant and a fan; the refrigerant absorbs heat in the water and the cooling fan dissipates the heat into the external air.

9. The infrared heating combined with water circulation cooling pressure difference puffing and drying equipment for fruits and vegetables according to claim 1, characterized in that: A water pump (18) is also provided between the water tank (19) and the water valve (17).

10. The infrared heating combined with water circulation cooling pressure difference puffing and drying equipment for fruits and vegetables according to claim 9, characterized in that: The water pump (18) is connected to the controller (7).

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