Stevioside refining and concentrating device

Abstract

The utility model belongs to the technical field of stevioside concentration, and particularly discloses a stevioside refining and concentrating device which comprises a concentrating tank, a storage tank and a condensing box, a stirring paddle is arranged in the concentrating tank and connected with a stirring motor, an electric heating plate is fixedly connected to the lower portion in the concentrating tank, and a discharging port is fixedly connected to the outer side of the bottom of the concentrating tank. The concentration tank is communicated with the storage tank through a liquid supply pipeline, a liquid supply pump and a liquid supply valve are sequentially mounted on the liquid supply pipeline, a steam discharge pipeline is fixedly connected above the concentration tank, a heat exchange pipeline is arranged in the storage tank, and the steam discharge pipeline is communicated with the input end of the heat exchange pipeline; the output end of the heat exchange pipeline is fixedly connected with the condensation box through a steam recovery pipeline. The heat exchange pipeline is arranged in the stevioside liquid storage tank, steam generated in the concentration tank is led out and introduced into the heat exchange pipeline, heat carried by the steam can preheat stevioside liquid in the storage tank, waste heat of the steam can be utilized by the device, and waste of the heat is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of stevioside concentration, in particular to a stevioside refining and concentrating device. Background Art

[0002] Stevia, also known as stevia and sugar grass, belongs to the genus Stevia of the Asteraceae family. The steviol glycoside extracted from stevia leaves is a mixture of a series of steviol glycosides, including a variety of glycosides. Stevia is a natural low-calorie sweetener. The calorific value of stevia is only 1 / 300 of that of sucrose. It is not absorbed by the human body after ingestion and does not generate calories. It is a sweetener suitable for patients with diabetes and obesity. When stevia is mixed with sucrose fructose or isomerized sugar, its sweetness can be increased and the taste can be improved. It can be used in candies, cakes, beverages, solid beverages, fried snacks, seasonings and candied fruits. Use it in appropriate amounts according to production needs.

[0003] In the production and processing of stevioside, the leaves of stevia need to be processed and extracted multiple times to obtain an extract. The extract can be filtered, washed with alcohol, decolorized, and other steps to obtain a stevioside liquid. The manufacturer will produce a stevioside concentrate of corresponding concentration through a refining and concentration device according to the concentration requirements of different orders. The steam generated by the current stevioside refining and concentration device will directly enter the condenser for treatment, and the waste heat is not used, resulting in a waste of resources. Therefore, it is necessary to design a stevioside refining and concentration device that can utilize the waste heat of the generated steam. Utility Model Content

[0004] In view of the above technical problems, the utility model provides a stevioside refining and concentrating device which can utilize the generated steam waste heat.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a stevioside refining and concentrating device, comprising a concentrating tank, a storage tank, and a condensing tank, wherein a stirring motor is fixedly connected to the top of the concentrating tank, the output end of the stirring motor passes through the top of the concentrating tank and is fixedly connected to the stirring paddle, an electric heating plate is fixedly connected to the lower part of the concentrating tank, a discharge port is fixedly connected to the outer side of the bottom of the concentrating tank, a discharge valve is installed on the discharge port, the concentrating tank and the storage tank are connected through a liquid supply pipe, a liquid supply pump and a liquid supply valve are installed on the liquid supply pipe in sequence, a steam exhaust pipe is fixedly connected to the top of the concentrating tank, a heat exchange pipe is arranged inside the storage tank, the steam exhaust pipe is connected to the input end of the heat exchange pipe, and the output end of the heat exchange pipe is fixedly connected to the condensing tank through a steam recovery pipe.

[0006] Furthermore, a feeding port is provided at the upper end of the storage tank, and a cover plate is hinged on the feeding port.

[0007] Furthermore, a pressure relief safety valve is installed on the steam exhaust pipeline.

[0008] Furthermore, a concentration detection device is fixedly connected to the side of the concentration tank, and the concentration detection device includes a concentration sensor located inside the concentration tank and a display terminal located outside the concentration tank.

[0009] Furthermore, a support leg is fixedly connected to the bottom of the concentration tank.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1. The utility model sets a heat exchange pipe in the stevioside liquid storage tank, draws out the steam generated in the concentration tank and passes it into the heat exchange pipe. The heat carried by the steam can preheat the stevioside liquid in the storage tank. The device can utilize the waste heat of the steam to avoid heat waste. At the same time, after the preheated stevioside liquid with a higher temperature is added to the concentration tank, the time used by the electric heating plate to heat the stevioside liquid can be reduced, further saving electricity resources.

[0012] 2. The utility model can detect and display the real-time concentration of the stevioside concentrate in the tank by installing a concentration detection device on the concentration tank, so that the operator can know the concentration of the concentrate in time and perform subsequent work accordingly. The safety of the operation of the device is ensured by installing a pressure relief safety valve on the steam pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] In the figure: 1. concentration tank, 2. storage tank, 3. condensation box, 4. stirring paddle, 5. stirring motor, 6. electric heating plate, 7. discharge port, 71. discharge valve, 8. liquid supply pipeline, 81. liquid supply valve, 9. liquid supply pump, 10. steam discharge pipeline, 11. heat exchange pipeline, 12. steam recovery pipeline, 13. feeding port, 14. pressure relief safety valve, 15. concentration detection device, 16. support leg. DETAILED DESCRIPTION

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] like Figure 1The device for refining and concentrating stevioside shown in the figure comprises a concentration tank 1, a storage tank 2, and a condensation tank 3. The top of the concentration tank 1 is rotatably connected to a stirring paddle 4 through a bearing. The upper end of the stirring paddle 4 is fixedly connected to the output end of a stirring motor 5. The stirring motor 5 is fixedly connected to the outer side of the top of the concentration tank 1. The lower part of the concentration tank 1 is fixedly connected to an electric heating plate 6. The electric heating plate 6 is integrally fitted to the bottom and inner wall of the concentration tank 1. The bottom of the concentration tank 1 is fixedly connected to a discharge port 7. Correspondingly, the bottom of the concentration tank 1 and the bottom of the electric heating plate 6 are provided with The discharge port 7 is connected to an opening, the discharge port 7 is connected to the finished product tank of the subsequent process, the discharge port 7 is installed with a discharge valve 71, the concentration tank 1 is connected to the storage tank 2 through a liquid supply pipe 8, the liquid supply pump 9 and the liquid supply valve 81 are installed on the liquid supply pipe 8 in sequence, a steam exhaust pipe 10 is fixedly connected above the concentration tank 1, a heat exchange pipe 11 is arranged inside the storage tank 2, the steam exhaust pipe 10 is connected to the input end of the heat exchange pipe 11, and the output end of the heat exchange pipe 11 is fixedly connected to the condensation tank 3 through a steam recovery pipe 12.

[0017] In order to facilitate the addition of the stevioside solution that needs to be refined and concentrated into the storage tank 2, a feeding port 13 is provided at the upper end of the storage tank 2. In order to prevent impurities from falling into the feeding port 13 and contaminating the stevioside solution inside, a cover plate is hinged on the feeding port.

[0018] In order to prevent the dangerous situation caused by excessive pressure in the steam pipeline due to abnormal reasons such as blockage, a pressure relief safety valve 14 is installed on the steam discharge pipeline 10. When the pressure in the pipeline is too high, the pressure relief safety valve 14 will be flushed open to relieve the pressure in the pipeline.

[0019] In order to facilitate the operator to know the concentration of concentrated stevioside in the concentration tank 1, a concentration detection device 15 is fixedly connected to the side of the concentration tank 1. The concentration detection device includes a concentration sensor located inside the concentration tank and a display terminal located outside the concentration tank. The concentration sensor inside the tank can detect the concentration of the concentrated liquid in the tank in real time and send an electrical signal, and the display terminal outside the tank receives the converted electrical signal and displays it.

[0020] In order to support the concentration tank and increase the stability of the equipment, a support leg 16 is fixedly connected to the bottom of the concentration tank 1 .

[0021] The specific working process of the utility model is as follows:

[0022] The liquid supply valve 81 and the liquid supply pump 9 are opened, and the preheated stevioside liquid is pumped from the storage tank 2 into the concentration tank 1 through the liquid supply pipe 8. The electric heating plate 6 and the stirring motor 5 are started to heat and heat the stevioside liquid in the concentration tank 1 while stirring it, and it is continuously refined and concentrated. The steam generated by the concentration enters the heat exchange pipe 11 through the steam discharge pipe 10, and exchanges heat with the newly added stevioside liquid. After that, the steam enters the steam recovery pipe 12 through the heat exchange pipe 11, and finally enters the condensation box 3 for cooling treatment. The concentration sensor of the concentration detection device 15 detects the concentration of the concentrated liquid in the tank in real time and sends an electrical signal. The display terminal outside the tank receives the converted electrical signal and displays it. When the operator observes that the concentration displayed on the display terminal reaches a predetermined value, the electric heating plate is closed, and the discharge valve 71 is opened. The concentrated stevioside concentrate enters the finished product tank through the discharge port 7, and waits for subsequent processing.

Claims

1. A stevioside refining and concentrating device, comprising a concentrating tank (1), a storage tank (2), and a condensing tank (3), wherein a stirring motor (5) is fixedly connected to the top of the concentrating tank (1), an output end of the stirring motor (5) passes through the top of the concentrating tank (1) and is fixedly connected to a stirring paddle (4), an electric heating plate (6) is fixedly connected to the lower part of the concentrating tank (1), a discharge port (7) is fixedly connected to the bottom of the concentrating tank (1), a discharge valve (71) is installed on the discharge port (7), the concentrating tank (1) and the storage tank (2) are connected through a liquid supply pipe (8), a liquid supply pump (9) and a liquid supply valve (81) are installed on the liquid supply pipe (8) in sequence, and the characteristics are as follows: A steam exhaust pipe (10) is fixedly connected above the concentration tank (1), a heat exchange pipe (11) is arranged inside the storage tank (2), the steam exhaust pipe (10) is connected to the input end of the heat exchange pipe (11), and the output end of the heat exchange pipe (11) is fixedly connected to the condensation tank (3) via a steam recovery pipe (12).

2. The device for refining and concentrating steviol glycosides according to claim 1, characterized in that: A feeding port (13) is provided at the upper end of the storage tank (2), and a cover plate is hingedly connected to the feeding port (13).

3. The device for refining and concentrating steviol glycosides according to claim 1, characterized in that: A pressure relief safety valve (14) is installed on the steam discharge pipeline (10).

4. The device for refining and concentrating steviol glycosides according to claim 1, characterized in that: A concentration detection device (15) is fixedly connected to the side of the concentration tank (1), and the concentration detection device comprises a concentration sensor located inside the concentration tank and a display terminal located outside the concentration tank.

5. The device for refining and concentrating steviol glycosides according to claim 1, characterized in that: The bottom of the concentration tank (1) is fixedly connected with a support leg (16).

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