Concentration tank for extracting tea cream

Abstract

The utility model relates to a tea re-extraction technology and solves the problem of tea cream concentration. A concentration tank for tea cream extraction comprises an evaporator, a separator, a condenser and a liquid receiving tank, the separator is connected with a steam outlet of the evaporator, a liquid outlet of the separator is connected with a barrel of the evaporator, a gaseous outlet of the separator is connected with the condenser, the liquid receiving tank is connected to the bottom of the condenser, and the liquid receiving tank is connected with the evaporator. A liquid inlet pipe and a liquid outlet pipe of a circulating coil pipe in the condenser are located at the upper end and the lower end respectively, an air inlet pipe is arranged at the top over the condenser, an air outlet pipe is vertically installed on the side wall of the upper end of the liquid receiving tank, and the ends, located on the outer side of the condenser, of the air inlet pipe and the air outlet pipe are communicated through a circulating pipeline which is an annular coil pipe. A speed regulating fan is arranged on the circulating pipeline; and a gas-liquid separator is arranged between the air outlet pipe and the speed regulating fan. And circulation is enhanced, steam is timely discharged for cooling, and meanwhile, condenser residues are reduced through air blowing.

Description

Technical Field

[0001] The utility model relates to a tea re-extraction technology, in particular to a concentration tank used for extracting tea paste. Background Art

[0002] Tea paste is a highly concentrated essence of the beneficial substances in tea, so the purpose of making tea paste is to better preserve and refine the aroma, color and taste of tea. If the made tea paste is not as good as the tea itself, then the drinking value of such tea paste is not as good as the tea itself.

[0003] Concentrators (concentrators) are suitable for concentrating materials such as traditional Chinese medicine, western medicine, starch sugar, and dairy products, and recovering industrial organic solvents (such as alcohol). For example, CN105617695A discloses a vacuum scraper concentrator with high concentration efficiency, including: an evaporator, a separator, a condenser, and a liquid receiving tank. The separator is connected to the steam outlet of the evaporator, and the liquid outlet of the separator is connected to the cylinder of the evaporator. The gas outlet of the separator is connected to the condenser, and the liquid receiving tank is connected to the bottom of the condenser. A wall-attached agitator is installed at the bottom of the evaporator. The condenser and the liquid receiving tank of the above-mentioned concentration tank are connected together, and the gas generated by evaporation passively passes through the separator and then enters the condenser. The poor gas circulation leads to low efficiency, and there is a lot of residue in the condenser after the concentration is completed. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a concentration tank suitable for extracting tea paste from tea leaves, which has high extraction efficiency and uses negative pressure to form an active circulation of evaporated gas for extracting tea paste.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a concentration tank for tea paste extraction, including an evaporator, a separator, a condenser and a liquid receiving tank, the separator is connected to the steam outlet of the evaporator, and the liquid outlet of the separator is connected to the cylinder of the evaporator, the gas outlet of the separator is connected to the condenser, the liquid receiving tank is connected to the bottom of the condenser, the liquid inlet pipe and the liquid outlet pipe of the circulation coil in the condenser are respectively located at the upper and lower ends, an air inlet pipe is arranged on the top just above the condenser, an air outlet pipe is arranged on the upper side wall of the liquid receiving tank, the air inlet pipe and the air outlet pipe are located at one end outside the condenser and are connected through a circulation pipe, a speed regulating fan is arranged on the circulation pipe, and a gas-liquid separator is arranged between the air outlet pipe and the speed regulating fan.

[0006] In a more preferred solution, the air outlet pipe is installed vertically upward on the outer side wall of the upper end of the liquid receiving tank. In this way, the liquid carried away by the circulating wind can flow back into the liquid receiving tank as much as possible, reducing the amount entering the circulation pipeline.

[0007] A better solution is that the circulation duct adopts an annular coil. In this way, the air in the circulation duct can be effectively cooled, and under the premise of ensuring the circulating air volume, cold air can be well provided to cooperate with the condenser to achieve a double cooling effect.

[0008] In a better solution, the air inlet pipe is located inside the condenser and is set as a showerhead outlet structure. This increases the blowing area, and through the speed-adjustable fan, after the end of the later production, the wind speed can be increased to remove the residue on the condenser pipe.

[0009] In a more preferred solution, a temperature sensor is provided in the pipeline between the separator and the evaporator, and connected to the controller of the speed-adjusting fan. The wind speed of the fan is adjusted according to the temperature feedback on the evaporator.

[0010] The utility model has the following beneficial effects: circulating air is added to the side of the condenser and the liquid receiving tank, and a certain negative pressure environment is formed at the joint of the condenser and the separator, which is conducive to guiding the steam generated by the evaporator into the condenser for cooling, and the gas from the separator is blown to the condenser by the circulating air for cooling and recovery. The circulating air itself is directed to the coil of the condenser to avoid the formation of liquid residue on the coil after the evaporated gas is condensed, thereby accelerating the falling efficiency. After the circulating air is circulated out and naturally cooled by the annular coil, it takes away part of the heat in the condenser, achieving a better cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 for Figure 1 A partial enlarged view of point A in the figure.

[0013] Figure 3 for Figure 1 A partial enlarged view of point B in FIG.

[0014] In the figure: evaporator 1, separator 2, condenser 3, liquid inlet pipe 31, liquid outlet pipe 32, liquid receiving tank 4, air inlet pipe 5, air outlet pipe 6, circulation pipe 7, speed regulating fan 8, gas-liquid separator 9. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. The drawings are all in very simplified form and use inaccurate ratios, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. Example

[0017] like Figure 1 As shown, a concentration tank for tea paste extraction includes an evaporator 1, a separator 2, a condenser 3 and a liquid receiving tank 4, the separator 2 is connected to the steam outlet of the evaporator 1, and the liquid outlet of the separator 2 is connected to the cylinder of the evaporator 1, the gas outlet of the separator 2 is connected to the condenser 3, and the liquid receiving tank 4 is connected to the bottom of the condenser 3.

[0018] like Figure 2 , 3 As shown, the liquid inlet pipe 31 and the liquid outlet pipe 32 of the circulation coil in the condenser 3 are respectively located at the upper and lower ends, the air inlet pipe 5 is arranged at the top directly above the condenser 3, and the upper side wall of the liquid receiving tank 4 is provided with an air outlet pipe 6. The air inlet pipe 5 and the air outlet pipe 6 are located at one end outside the condenser and are connected through a circulation pipe 7. A speed regulating fan 8 is arranged on the circulation pipe 7, and a gas-liquid separator 9 is arranged between the air outlet pipe 6 and the speed regulating fan 8. The liquid outlet of the gas-liquid separator 9 is connected to the cylinder of the liquid receiving tank. The air outlet pipe 6 is vertically installed on the upper outer wall of the liquid receiving tank 4, the circulation pipe 7 adopts an annular coil, the air inlet pipe 5 is located inside the condenser 3 and is set as a showerhead outlet structure, and the pipe between the separator 2 and the evaporator 1 is provided with a temperature sensor connected to the controller of the speed regulating fan 8.

[0019] Working principle: when the concentration work starts, the temperature is low and the speed-regulating fan works at a low speed to ensure that the temperature in the evaporator increases. When liquid begins to return from the liquid outlet in the separator, the speed-regulating fan is started, and the air inlet pipe blows air to the condenser to take away the gas from the separator and blow it to the condenser for condensation recovery. According to the feedback of the outlet steam temperature in the evaporator, the wind speed is increased to ensure that the gas generated by evaporation is sucked in.

[0020] When the evaporation and concentration process is about to end, the speed-regulating fan works at full speed to ensure that the evaporated gas is sucked out as much as possible to avoid secondary cooling in the evaporator and reflux into the concentrated liquid. At the same time, it can also blow air to the condenser tube in the condenser to reduce the residue in the condenser tube, which is more conducive to healthy production.

[0021] For the sake of clarity, not all features of the actual embodiments are described. In the following description, well-known functions and structures are not described in detail because they would obscure the present invention with unnecessary detail. It should be recognized that in the development of any actual embodiment, a large number of implementation details must be made to achieve the specific goals of the developer, such as changing from one embodiment to another according to relevant system or business limitations. In addition, it should be recognized that such development work may be complex and time-consuming, but is merely routine work for those skilled in the art.

Claims

1. A concentration tank for extracting tea paste, comprising an evaporator, a separator, a condenser and a liquid receiving tank, wherein the separator is connected to the steam outlet of the evaporator, the liquid outlet of the separator is connected to the cylinder of the evaporator, the gas outlet of the separator is connected to the condenser, and the liquid receiving tank is connected to the bottom of the condenser, characterized in that: The liquid inlet pipe and liquid outlet pipe of the circulating coil in the condenser are respectively located at the upper and lower ends. The air inlet pipe is arranged on the top directly above the condenser, and the air outlet pipe is vertically installed on the upper side wall of the liquid receiving tank. The air inlet pipe and the air outlet pipe are located at one end outside the condenser and are connected by a circulating pipe. The circulating pipe adopts an annular coil, and a speed-regulating fan is arranged on the circulating pipe, and a gas-liquid separator is arranged between the air outlet pipe and the speed-regulating fan.

2. A concentration tank for extracting tea paste as claimed in claim 1, characterized in that: The air inlet pipe is located on the inner side of the condenser and is arranged as a showerhead air outlet structure.

3. A concentration tank for extracting tea paste as claimed in claim 1 or 2, characterized in that: A temperature sensor is provided on the pipeline between the separator and the evaporator and is connected to the controller of the speed regulating fan.

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