Fruit juice concentration device

Abstract

The utility model relates to the technical field of fruit juice concentration, in particular to a fruit juice concentration device which comprises a distillation retort, a condensation retort, a water storage retort and a gas circulation mechanism, the condensation retort and the water storage retort are vertically stacked on one side of the distillation retort, and an interlayer is arranged at the bottom of the distillation retort. An electric heating rod is mounted in the interlayer and is used for heating the interior of the distillation retort; the distillation tank, the condensation tank and the water storage tank are communicated through the gas circulation mechanism, so that water vapor generated in the fruit juice concentration process is guided out and collected. According to the utility model, the condition of function stagnation of other parts does not occur during the operation of the vacuum pump of the air circulation mechanism, and resource waste caused by direct discharge of water vapor is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of juice concentration, in particular to a juice concentration device. Background Art

[0002] Concentrated juice is made by evaporating some of the water from the fruit juice using a low-temperature vacuum concentration method. Juice is a heat-sensitive material, and low-temperature vacuum concentration can preserve its nutrients and natural flavor.

[0003] Chinese patent "Application No.: CN202320246274.3" discloses "a juice production and concentration device, including a tank body for juice concentration, a heating plate for heating juice is symmetrically connected to the inner tank wall of the tank body, and the juice is heated by the heating plate. The tank top of the tank body is sealed and connected to a driving cover, and an impeller is rotatably arranged in the driving cover, and the lower end of the impeller is connected to an agitator, which is rotatably connected to the center of the tank top of the tank body through a sealed bearing, and the lower end of the agitator is arranged in the juice of the tank body. When the impeller is driven by steam in the driving cover, it will drive the agitator to rotate, and the juice is stirred by the agitator, so that the juice is fully heated, and the two sides of the driving cover are symmetrically connected with an air inlet pipe and an air outlet pipe. The utility model utilizes the kinetic energy and heat of steam generated in the process of juice concentration, thereby improving the concentration effect of the juice."

[0004] The solution provided by this patent uses the characteristic that the boiling point of water decreases as the pressure decreases. The pressure in the tank is reduced by a vacuum pump to reduce the boiling point of the water in the juice. The juice in the tank is then heated at low temperature by a heating plate, so that part of the water in the juice is quickly vaporized into water vapor, thereby completing the low-temperature concentration process of the juice. In order to maintain the nutritional components and natural flavor of the concentrated juice, the pressure value in the tank must be maintained within a set range, but the water vapor generated during the low-temperature heating process will increase the air pressure in the tank, and the vacuum pump needs to be operated to keep the pressure in the tank from exceeding the set value. During the operation of the vacuum pump, the amount of water vapor entering the water inlet pipe is very small, or even non-existent, resulting in the stagnation of the water vapor condensation process during the operation of the vacuum pump, the agitator does not rotate, and the waste heat of the water vapor cannot be utilized. Utility Model Content

[0005] The main purpose of the utility model is to provide a juice concentrating device, aiming to solve the above technical problems.

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

[0007] A juice concentration device, characterized in that it comprises: a distillation tank, a condensation tank, a water storage tank and an air circulation mechanism, the condensation tank and the water storage tank are stacked up and down on one side of the distillation tank, the bottom of the distillation tank is provided with an interlayer, an electric heating rod is installed in the interlayer and is used to heat the inside of the distillation tank; the air flow circulation structure comprises a vacuum pump arranged on the top of the distillation tank, the input end of the vacuum pump is connected with the inner top of the distillation tank through an exhaust pipe, the output end of the vacuum pump is connected with one end of a first air guide pipe, the other end of the first air guide pipe is respectively connected with one end of a second air guide pipe and an exhaust pipe through a first three-way valve, the other end of the second air guide pipe passes through the condensation tank from top to bottom and then extends into the inner top of the water storage tank, the inner top of the water storage tank is connected with one end of an air supply pipe, and the other end of the air supply pipe is connected with the inner bottom of the distillation tank.

[0008] As a further improvement of the present invention, the juice concentration device also includes a water circulation mechanism, which includes a water pump arranged outside the water storage tank, the input end of the water pump is connected to the inner bottom of the water storage tank through a pumping pipe, and the output end of the water pump is respectively connected to one end of two first water pipes through a second three-way valve, one end of one first water pipe away from the three-way valve is connected to the input end of a cooling tower, the output end of the cooling tower is connected to the inner top of the condensation tank through a water injection pipe, and the inner bottom of the condensation tank is connected to the inner top of the water storage tank through a drain pipe; the other end of the first water pipe away from the second three-way valve is connected to one end of at least one second water pipe through an adapter, the other end of each second water pipe is connected to the input port of a nozzle, and the output port of each nozzle extends into the inner top of the distillation tank.

[0009] As a further improvement of the utility model, the juice concentrating device also includes a stirring mechanism, which includes a motor arranged in the distillation tank, the rotating shaft of the motor is connected to one end of a stirring rod, the other end of the stirring rod extends into the distillation tank and is rotatably connected to the inner bottom of the distillation tank, the end of the stirring rod away from the motor is connected to one end of at least one stirring blade, the other end of each stirring blade extends toward the inner wall of the distillation tank, and the angles between two adjacent stirring blades are consistent.

[0010] As a further improvement of the utility model, the distillation tank is provided with an injection port and a discharge port connected to its internal space, and the injection port and the discharge port are both provided with a first control valve, and the first control valve is used to control the opening and closing of the injection port or the discharge port; the distillation tank is provided with a first liquid level detector, an air pressure sensor and a temperature sensor, the first liquid level detector is used to detect the actual liquid level in the distillation tank in real time, the air pressure sensor is used to monitor the internal air pressure of the distillation tank in real time, and the temperature sensor is used to monitor the temperature of the liquid inside the distillation tank in real time.

[0011] As a further improvement of the utility model, a water filling port connected to the internal space is arranged on the top of the water storage tank, and a drainage port connected to the internal space is arranged on the bottom of the water storage tank, the water filling port is connected to an external water source, and the drainage port is connected to an external water collection mechanism, and a second control valve is arranged on the water filling port and the drainage port; a second liquid level detector is arranged on the side wall of the water storage tank, and the second liquid level detector is used to detect the actual water level in the water storage tank in real time.

[0012] As a further improvement of the utility model, a one-way valve is provided at the end of the gas pipe located in the distillation tank, which is connected from the water storage tank to the distillation tank, and the minimum air pressure value of the one-way valve is not lower than the maximum air pressure value when the distillation tank is in operation.

[0013] As a further improvement of the present invention, the juice concentrating device also includes a controller electrically connected to the electric heating rod, the vacuum pump, the first control valve, the first liquid level detector, the air pressure sensor, the temperature sensor, the water pump, the second three-way valve, the cooling tower, the second control valve, the second liquid level detector and the motor respectively; the controller stores a plurality of control instructions, and when receiving signals from the first liquid level detector, the air pressure sensor, the temperature sensor and the second liquid level detector, and receiving external input signals, the controller matches the corresponding control instructions and controls the electric heating rod, the vacuum pump, the water pump and the cooling tower to work, controls the flow direction of the first three-way valve and the second three-way valve, and controls the opening and closing of each first control valve and each second control valve.

[0014] Beneficial effects of the utility model:

[0015] In the utility model, the fruit juice is put into the distillation tank, and the characteristic that the boiling point of water decreases as the air pressure decreases is utilized to make the first air duct flow to the exhaust pipe, and the vacuum pump is used to extract part of the gas in the distillation tank and discharge it, so that the fruit juice is in a low-pressure or near-vacuum environment, and then the electric heating rod is used to heat the fruit juice at a low temperature, so that the temperature of the water in the fruit juice reaches the boiling point and quickly vaporizes into water vapor; the first air duct flows to the second air duct and is connected, and the vacuum pump works to extract the generated water vapor and transport it to the water storage tank, and at the same time, a heat exchange medium with a temperature lower than that of the water vapor in the second air duct is input into the condensation tank, and heat transfer occurs when the water vapor in the second air duct flows through the condensation tank, and part of the water vapor releases heat and condenses into water and flows into the water storage tank for storage under the action of gravity, and the remaining water vapor will enter the distillation tank again through the air transmission pipe and heat the fruit juice; during the whole process, the vacuum pump operates continuously, and there is no stagnation of the functions of other components when the vacuum pump is operating, and the waste of resources caused by direct discharge of water vapor is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a juice concentration device;

[0017] Figure 2 It is another structural schematic diagram of a juice concentrating device.

[0018] Description of reference numerals:

[0019] 1. Distillation tank; 11. Electric heating rod; 12. Liquid filling port; 13. Liquid discharge port; 14. First control valve; 15. First liquid level detector; 16. Air pressure sensor; 17. Temperature sensor; 2. Condensation tank; 3. Water storage tank; 31. Water filling port; 32. Drain port; 33. Second control valve; 34. Second liquid level detector; 4. Air circulation mechanism; 41. Vacuum pump; 42. Air extraction pipe; 43. First air guide pipe ; 44. First three-way valve; 45. Second air pipe; 46. Exhaust pipe; 47. Air pipe; 48. One-way valve; 5. Water circulation structure; 51. Water pump; 52. Water extraction pipe; 53. Second three-way valve; 54. First water pipe; 55. Cooling tower; 56. Water injection pipe; 57. Drain pipe; 58. Second water pipe; 59. Nozzle; 6. Stirring mechanism; 61. Motor; 62. Stirring rod; 63. Stirring blade. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Figure 1 An embodiment of a juice concentrating device of the utility model is shown, see Figure 1 In this embodiment, the juice concentration device includes: a distillation tank 1, a condensation tank 2, a water storage tank 3 and an air circulation mechanism 4.

[0022] Among them, see Figure 1The condensation tank 2 and the water storage tank 3 are stacked up and down on one side of the distillation tank 1. The bottom of the distillation tank 1 is provided with an interlayer, and an electric heating rod 11 is installed in the interlayer. The electric heating rod 11 works to heat the inside of the distillation tank 1 at a low temperature; the air flow circulation structure includes a vacuum pump 41 arranged on the top of the distillation tank 1, and the input end of the vacuum pump 41 is connected to the inner top of the distillation tank 1 through an exhaust pipe 42. The vacuum pump 41 works to extract part of the gas in the distillation tank 1, so as to reduce the air pressure in the distillation tank 1, and even make the inside of the distillation tank 1 close to a vacuum state. The output end of the vacuum pump 41 is connected to one end of a first air guide pipe 43, and the other end of the first air guide pipe 43 is connected to one end of a second air guide pipe 45 and an exhaust pipe 46 respectively through a first three-way valve 44. The other end of the second air guide pipe 45 penetrates the condensing tank 2 from top to bottom and then extends into the top of the water storage tank 3. The part of the second air guide pipe 45 located in the condensing tank 2 is spiral-shaped. Before the low-temperature concentration of the juice, the air pressure in the distillation tank 1 needs to be reduced, and the first three-way valve 44 is adjusted to make the first air guide pipe 43 to the exhaust pipe 46 46 is connected, and the gas extracted by the vacuum pump 41 is directly discharged through the exhaust pipe 46; during the low-temperature concentration process, the first three-way valve 44 is adjusted to connect the first air conduit 43 to the second air conduit 45, and at the same time, a heat exchange medium with a temperature lower than the temperature of the gas in the second conduit is injected into the condenser 2. During the process of the gas in the second air conduit 45 flowing into the condenser 2, the heat will be transferred from the high temperature area to the low temperature area, and the water vapor in the second air conduit 45 will release heat and condense into water and flow into the water storage tank 3 under the action of gravity; the inner top of the water storage tank 3 is connected to a One end of the air pipe 47 is connected, and the other end of the air pipe 47 is connected to the inner bottom of the distillation tank 1. When the vacuum pump 41 continues to work, the gas pressures in the second air pipe 45, the water storage tank 3 and the air pipe 47 are consistent and are all greater than the gas pressure in the distillation tank 1. The water vapor that has not released heat in the second air pipe will enter the water storage tank 3 with the air flow, and finally be discharged into the distillation tank 1 again through the air pipe 47, and the juice in the distillation tank 1 is heated by the waste heat of the uncondensed steam. At the same time, the water vapor can enter the exhaust pipe 46 again for condensation.

[0023] Further, see Figure 1 A one-way valve 48 is provided at the end of the air pipe 47 located in the distillation tank 1 to conduct air from the water storage tank 3 to the distillation tank 1. The minimum air pressure value conducted by the one-way valve 48 is not lower than the maximum air pressure value when the distillation tank 1 is in operation, so as to prevent the juice in the distillation tank 1 from flowing back into the water storage tank 3 through the air pipe 47.

[0024] Further, see Figure 1A liquid injection port 12 communicating with the internal space of the distillation tank 1 is provided at the top, and a liquid discharge port 13 communicating with the internal space of the distillation tank 1 is provided at the bottom. First control valves 14 are provided on the liquid injection port 12 and the liquid discharge port 13. The two first control valves 14 are respectively used to control the opening and closing of the liquid injection port 12 and the liquid discharge port 13. The juice to be concentrated can be injected into the distillation tank 1 through the liquid injection port 12, and the juice can be taken out through the liquid discharge port 13 after the juice concentration process is completed.

[0025] Preferably, the first control valve 14 is initially closed so that a sealed space can be formed in the distillation tank 1 after the juice is injected into the distillation tank 1.

[0026] Further, see Figure 1 A first liquid level detector 15 is installed on the inner wall of the distillation tank 1. The first liquid level detector 15 is used to detect the actual liquid level in the distillation tank 1 in real time, so as to compare the actual liquid level with the initial liquid level. By comparing the two, the amount of water separated from the juice can be known, and then the concentration progress of the juice can be judged.

[0027] Further, see Figure 1 A pressure sensor 16 is provided on the inner top wall of the distillation tank 1, and a temperature sensor 17 is provided on the inner bottom wall of the distillation tank 1. The pressure sensor 16 is used to detect the gas pressure in the distillation tank 1 in real time, and the temperature sensor 17 is used to detect the temperature of the juice in the distillation tank 1 in real time; in order to retain the nutrients and flavor of the juice after concentration, the temperature of the juice and the internal air pressure of the distillation tank 1 during the distillation process shall not exceed the set value; the working frequency of the vacuum pump 41 is adjusted by the value change detected by the pressure sensor 16, so that the internal air pressure of the distillation tank 1 is always within the set value range; the working frequency of the electric heating rod 11 is adjusted by the value detected by the temperature sensor 17, so that the temperature of the juice in the distillation tank 1 is always within the set value range.

[0028] In this embodiment, the boiling point of water decreases as the pressure decreases, and the juice to be concentrated is injected into the distillation tank 1 through the liquid injection port 12, and the distillation tank 1 is sealed; the first three-way valve 44 is adjusted to allow the first air pipe 43 to flow to the exhaust pipe 46, and the vacuum pump 41 is controlled to work to exhaust part of the gas in the distillation tank 1 to reduce the air pressure in the distillation tank 1; when the air pressure value in the distillation tank 1 drops to a set range, the first three-way valve 44 is adjusted to allow the first air pipe 43 to flow to the second air pipe 45, and the electric heating rod 11 is controlled to work to heat the juice in the distillation tank 1, and the vacuum pump 41 is controlled to work, and the working frequency of the electric heating rod 11 and the vacuum pump 41 is adjusted in real time according to the values ​​detected by the air pressure sensor 16 and the temperature sensor 17, so that during the low-temperature concentration process, the distillation The temperature and air pressure of the juice in tank 1 are both within the set numerical range; during the low-temperature concentration process, the water in the juice is vaporized into water vapor, and the water vapor in the distillation tank 1 is pumped by the vacuum pump 41 to the second air duct 45, and finally flows to the water storage tank 3; in this process, a heat exchange medium with a lower temperature is injected into the condensation tank 2. As long as the temperature of the water vapor in the second air duct 45 is higher than the temperature of the heat exchange medium, the heat of the water vapor flowing through the condensation tank 2 will be transferred to the heat exchange medium, and the water vapor will condense into water during the heat release process. The condensed water flows into the water storage tank 3 under the action of gravity, and the uncondensed water vapor will enter the distillation tank 1 again through the air pipe 47. This part of the steam can heat the juice in the distillation tank 1, and at the same time, it can enter the second air duct 45 again under the action of the vacuum pump 41 to enter the secondary condensation.

[0029] It should be noted that the present embodiment focuses on the working principles of the electric heating rod 11, the vacuum pump 41, the first control valve 14, the first liquid level detector 15, the air pressure sensor 16 and the temperature sensor 17. The specific structures of the electric heating rod 11, the vacuum pump 41, the first control valve 14, the first liquid level detector 15, the air pressure sensor 16 and the temperature sensor 17 are not the focus of the present embodiment and are all prior arts. The present embodiment and the accompanying drawings have explained the installation positions of the electric heating rod 11, the vacuum pump 41, the first control valve 14, the first liquid level detector 15, the air pressure sensor 16 and the temperature sensor 17, and the specific structures of the electric heating rod 11, the vacuum pump 41, the first control valve 14, the first liquid level detector 15, the air pressure sensor 16 and the temperature sensor 17 are not repeated.

[0030] In order to utilize the water generated during the concentration process, based on the above embodiment, see Figure 2 The juice concentration device also includes a water circulation mechanism, which includes: a water pump 51 and a cooling tower 55.

[0031] Among them, see Figure 2The input end of the water pump 51 is connected to one end of a water pumping pipe 52, and the other end of the water pumping pipe 52 extends into the inner bottom of the water storage tank 3; the output end of the water pump 51 is connected to one end of two first water pipes 54 through a second three-way valve 53, respectively, the other end of one of the first water pipes 54 is connected to the input end of the cooling tower 55, the output end of the cooling tower 55 is connected to one end of a water injection pipe 56, the other end of the water injection pipe 56 extends into the inner top of the condensation tank 2, the bottom of the condensation tank 2 is connected to one end of a drainage pipe 57, and the other end of the drainage pipe 57 extends into the inner top of the water storage tank 3; the end of the other first water pipe 54 away from the second three-way valve 53 is connected to one end of at least one second water pipe 58 through an adapter, the other end of each second water pipe 58 is connected to the input port of a nozzle 59, and the output port of each nozzle 59 extends into the distillation tank 1; adjust the second three-way valve 53 to make the pumping pipe 52 flow to the cooling tower 55, control the water pump 51 to work to pump out the water in the water storage tank 3 and transport it to the condensing tank 2, the cooling tower 55 works to reduce the temperature of the water flowing through, so that the temperature of the water flowing into the condensing tank 2 is lower than the temperature of the steam in the second air guide pipe 45, and the water in the condensing tank 2 exchanges heat with the water vapor in the second air guide pipe 45 and flows into the water storage tank 3 again through the drain pipe 57, so that the water in the water storage tank 3 is continuously input into the condensing tank 2 as a heat exchange medium, so as to realize the recycling of the water separated in the low-temperature concentration process; adjust the second three-way valve 53 to make the pumping pipe 52 flow to the second water guide pipe 58, control the water pump 51 to work to pump out the water in the water storage tank 3 and transport it to the second water guide pipe 58, and finally inject it into the distillation tank 1 through the nozzle 59, so as to rinse the inside of the distillation tank 1 after the juice is low-temperature concentrated.

[0032] Further, see Figure 2 A water injection port 31 communicating with the internal space thereof is provided at the top of the water storage tank 3, and a water discharge port 32 communicating with the internal space thereof is provided at the bottom of the water storage tank 3. Both the water injection port 31 and the water discharge port 32 are provided with a second control valve 33. The water injection port 31 is connected to an external water source. When the amount of water in the water storage tank 3 for condensation circulation is insufficient, water is injected into the water storage tank 3 by opening the second control valve 33 of the water injection port 31; when there is more water in the water storage tank 3, the second control valve 33 of the water discharge port 32 is controlled to open to discharge excess water, thereby preventing the second air guide pipe 45 from being blocked at one end away from the first three-way valve 44, and preventing the water in the water storage tank 3 from entering the air supply pipe 47.

[0033] Further, see Figure 2 A second liquid level detector 34 is provided on the inner wall of the water storage tank 3. The second liquid level detector 34 is used to detect the actual water level in the water storage tank 3 in real time so as to control the amount of water in the water storage tank 3. When the water in the water storage tank 3 is insufficient for condensation circulation, water is added. When the water in the water storage tank 3 is excessive, part of the water is discharged.

[0034] In this embodiment, when water is transported to the condenser 2 as a heat exchange medium, the second three-way valve 53 is adjusted to allow the water pump 51 to flow to the cooling tower 55, and the water pump 51 works to transport the water in the water storage tank 3 to the condenser 2. The cooling tower 55 works to reduce the temperature of the water flowing to the condenser 2, so as to condense the water vapor flowing through the second air conduit 45 into water as a heat exchange medium. When the distillation tank 1 needs to be cleaned, the second three-way valve 53 is adjusted to allow the water pump 51 to flow to the second water conduit 58, and the water pump 51 works to transport the water in the water storage tank 3 to each second water conduit 58, and finally injects it into the distillation tank 1 through the nozzle 59 to clean the inside of the distillation tank 1.

[0035] It should be noted that the present embodiment focuses on the working principles of the water pump 51, the second three-way valve 53, the cooling tower 55, the second control valve 33 and the second liquid level detector 34. The specific structures of the water pump 51, the second three-way valve 53, the cooling tower 55, the second control valve 33 and the second liquid level detector 34 are not the focus of the present embodiment and are all prior arts. The present embodiment and the accompanying drawings have described the installation area or position of the water pump 51, the second three-way valve 53, the cooling tower 55, the second control valve 33 and the second liquid level detector 34, and the specific structures of the water pump 51, the second three-way valve 53, the cooling tower 55, the second control valve 33 and the second liquid level detector 34 are no longer repeated.

[0036] In order to make the juice in each part of the distillation tank 1 be heated evenly, based on the above embodiment, see Figure 2 The juice concentrating device further includes a stirring mechanism 6 , which includes a motor 61 , a stirring rod 62 and a stirring blade 63 .

[0037] Among them, see Figure 2 The motor 61 is arranged on the outer top of the distillation tank 1, and the rotating shaft of the motor 61 is coaxially connected to one end of the stirring rod 62. The other end of the stirring rod 62 extends into the distillation tank 1 and is rotatably connected to the inner bottom of the distillation tank 1. The end of the stirring rod 62 away from the motor 61 is connected to one end of at least one stirring blade 63, and the other end of each stirring blade 63 extends toward the side wall of the distillation tank 1, and the angles between two adjacent stirring blades 63 are consistent.

[0038] Preferably, in this embodiment, providing two first stirring blades 63 is the best embodiment.

[0039] In this embodiment, the control motor 61 can drive the first stirring rod 62 to rotate clockwise or counterclockwise around its own axis, thereby driving each first stirring blade 63 to rotate clockwise or counterclockwise around the axis of the stirring rod 62, so as to promote the flow of juice in the distillation tank 1 and balance the temperature of the juice in each part of the distillation tank 1.

[0040] It should be noted that this embodiment focuses on the working principle of the motor 61, and its specific structure is not the focus of this embodiment and is the prior art. This embodiment and the accompanying drawings have explained the installation position or area of ​​the motor 61, and the specific structure of the motor 61 will not be repeated.

[0041] In order to realize intelligent control of the juice concentrator, on the basis of the above embodiment, the juice concentrator further includes a controller electrically connected to the electric heating rod 11, the vacuum pump 41, the first control valve 14, the first liquid level detector 15, the air pressure sensor 16, the temperature sensor 17, the water pump 51, the second three-way valve 53, the cooling tower 55, the second control valve 33, the second liquid level detector 34 and the motor 61, respectively. The controller stores a plurality of control instructions. When receiving signals from the first liquid level detector 15, the air pressure sensor 16, the temperature sensor 17 and the second liquid level detector 34, as well as external input signals, the controller matches the corresponding control instructions and controls the electric heating rod 11, the vacuum pump 41, the water pump 51 and the cooling tower 55 to work, respectively controls the flow direction of the first three-way valve 44 and the second three-way valve 53, and controls the opening and closing of each first control valve 14 and each second control valve 33.

[0042] It should be noted that this embodiment focuses on the control principle of the controller. The specific structure of the controller is not the focus of this embodiment and is a prior art. This embodiment and the drawings in the specification no longer elaborate on the specific structure of the controller, as well as the installation area or location.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A juice concentrating device, characterized in that: include: A distillation tank, a condensation tank, a water storage tank and an air circulation mechanism, wherein the condensation tank and the water storage tank are stacked up and down on one side of the distillation tank, a mezzanine is provided at the bottom of the distillation tank, an electric heating rod is installed in the mezzanine and is used to heat the inside of the distillation tank; the air flow circulation structure comprises a vacuum pump provided at the top of the distillation tank, the input end of the vacuum pump is connected to the inner top of the distillation tank through an exhaust pipe, the output end of the vacuum pump is connected to one end of a first air guide pipe, the other end of the first air guide pipe is respectively connected to one end of a second air guide pipe and an exhaust pipe through a first three-way valve, the other end of the second air guide pipe passes through the condensation tank from top to bottom and then extends into the inner top of the water storage tank, the inner top of the water storage tank is connected to one end of an air supply pipe, and the other end of the air supply pipe is connected to the inner bottom of the distillation tank.

2. The juice concentrating device according to claim 1, characterized in that: It also includes a water circulation mechanism, which includes a water pump arranged outside the water storage tank, the input end of the water pump is connected to the inner bottom of the water storage tank through a pumping pipe, the output end of the water pump is connected to one end of two first water pipes through a second three-way valve, one end of one first water pipe away from the three-way valve is connected to the input end of a cooling tower, the output end of the cooling tower is connected to the inner top of the condensation tank through a water injection pipe, and the inner bottom of the condensation tank is connected to the inner top of the water storage tank through a drain pipe; the other end of the first water pipe away from the second three-way valve is connected to one end of at least one second water pipe through an adapter, the other end of each second water pipe is connected to the input port of a nozzle, and the output port of each nozzle extends into the inner top of the distillation tank.

3. The juice concentrating device according to claim 1, characterized in that: It also includes a stirring mechanism, which includes a motor arranged on the distillation tank, the rotating shaft of the motor is connected to one end of a stirring rod, the other end of the stirring rod extends into the distillation tank and is rotatably connected to the inner bottom of the distillation tank, the end of the stirring rod away from the motor is connected to one end of at least one stirring blade, the other end of each stirring blade extends toward the inner wall of the distillation tank, and the angles between two adjacent stirring blades are consistent.

4. The juice concentrating device according to claim 1, characterized in that: The distillation tank is provided with an injection port and a discharge port connected to its internal space, and the injection port and the discharge port are both provided with a first control valve, and the first control valve is used to control the opening and closing of the injection port or the discharge port; the distillation tank is provided with a first liquid level detector, an air pressure sensor and a temperature sensor, the first liquid level detector is used to detect the actual liquid level in the distillation tank in real time, the air pressure sensor is used to monitor the internal air pressure of the distillation tank in real time, and the temperature sensor is used to monitor the temperature of the liquid inside the distillation tank in real time.

5. The juice concentrating device according to claim 1, characterized in that: A water inlet communicating with the internal space of the water storage tank is arranged on the top of the water storage tank, and a drain outlet communicating with the internal space of the water storage tank is arranged on the bottom of the water storage tank. The water inlet is connected to an external water source, and the drain outlet is connected to an external water collection mechanism. A second control valve is arranged on the water inlet and the drain outlet; a second liquid level detector is arranged on the side wall of the water storage tank, and the second liquid level detector is used to detect the actual water level in the water storage tank in real time.

6. The juice concentrating device according to claim 1, characterized in that: A one-way valve is provided at the end of the gas pipe located inside the distillation tank, which conducts air from the water storage tank to the distillation tank. The minimum air pressure value conducted by the one-way valve is not lower than the maximum air pressure value when the distillation tank is in operation.

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