Intelligent vacuum concentration device

Abstract

An intelligent vacuum concentration device comprises a vacuum control system, a cooling water circulation system and a vacuum parallel evaporation system, and the vacuum control system comprises a control terminal, a condenser, a collection bottle, a steam temperature sensor, a pressure sensor, a proportional electromagnetic valve and a vacuum pump. The cooling water circulation system comprises a cooling water circulation instrument, an outlet water temperature sensor and a return water temperature sensor, and the vacuum parallel evaporation system comprises a vacuum parallel concentrator, an optical constant volume sensor, a vortex mechanism and a container. The steam temperature sensor, the pressure sensor, the proportional electromagnetic valve, the vacuum pump, the cooling water circulation instrument, the outlet water temperature sensor, the return water temperature sensor, the vacuum parallel concentrator, the optical constant volume sensor and the vortex mechanism are all connected with the control terminal, a coiled pipe is arranged in the condenser, the condenser is provided with six interfaces which are respectively a first interface to a sixth interface, and the control terminal is connected with the control terminal. A sealing cover is arranged at the upper part of the container, and the lower part of the container is placed in the vacuum parallel concentrator.

Description

Technical Field

[0001] The utility model relates to the field of vacuum concentration, and more specifically, to an intelligent vacuum concentration device. Background Art

[0002] Parallel vacuum concentration technology is widely used in the fields of food, traditional Chinese medicine, environment, etc. It is an evaporation technology that uses conditions such as heating, vacuum, and shaking to accelerate the volatilization of solvents. Parallel vacuum concentration technology is commonly applied to external equipment cooling water circulation, vacuum parallel concentrators, and vacuum control systems.

[0003] In the prior art, a vacuum concentrator usually uses a water bath or metal as a heating medium to conduct heat to a sample bottle containing a solvent; at the same time, the vacuum concentrator has a function of shaking the sample bottles in parallel to increase the surface area of the liquid and accelerate the volatilization rate.

[0004] The vacuum control system controls the start of the vacuum pump to apply negative pressure to the sample bottle containing the solvent. There are two ways to control the negative pressure. First, the vacuum pump can be a variable-frequency type, and the vacuum degree is changed by changing the efficiency of the pump itself; second, the vacuum pump is a fixed-frequency type, and air is supplemented into the vacuum flow path through a solenoid valve to adjust the vacuum degree. No matter which method is used, it is to reduce the boiling point of the volatile solvent and at the same time make the volatilized steam be taken out by the vacuum.

[0005] The vacuum tube leads to the top of the sample bottle containing the solvent in the vacuum concentrator. The vacuum will export the volatilized solvent to the condenser. The spiral tubes in the condenser lead to the inlet and outlet of the cooling water circulation respectively. The spiral tubes condense the volatilized solvent vapor into a liquid state to achieve the purpose of solvent recovery.

[0006] In summary, the overall application process in the prior art is as follows: set the heating temperature and oscillation frequency of the vacuum concentrator, set the temperature and water circulation rate of the cooling water circulation, and set the vacuum degree of the vacuum control system or the vacuum degree changing with time. Although the prior art realizes the overall functions, it still has certain limitations and disadvantages:

[0007] In actual applications, when concentrating different solvents or different mixed solvents, the vacuum degree of vacuum concentration needs to be pre-tested. At the same time, in order to improve the concentration efficiency and prevent the solvent from boiling violently, it is necessary to set the vacuum degree in stages according to the amount and type of the experimental solvent. The efficiency is low and the process cannot be automated;

[0008] For environmental protection and secondary utilization of solvents, the solvent recovery rate is particularly important. Usually, the way to increase the solvent recovery rate is to increase the condensation area of the spiral tube in the condenser or improve the condensation efficiency of the water cycle. In the prior art, the circulating water temperature of the cooling water cycle can be set, but when aiming to improve the condensation efficiency, a relatively low temperature is usually set. During the actual concentration process, the volatilized steam shows a changing trend. Generally, a higher condensation efficiency is required when there is more solvent in the early stage, and when approaching the end of evaporation, there is less steam. There is no control for such a situation in the prior art, resulting in problems such as unstable condensation rate or energy consumption.

[0009] As an automated instrument, before the concentration work is carried out, preliminary experiments are needed to determine the approximate duration required for the completion of the concentration work. When the duration of the concentration work approaches the set duration, it is necessary for manual confirmation of whether the concentration work has been completed.

[0010] Generally, when carrying out the concentration work, there are usually two requirements: completely evaporating the solvent or retaining a certain volume, and neither of these two requirements can be automatically achieved in the prior art. Utility Model Content

[0011] The present utility model provides an intelligent vacuum concentration device to solve the technical problems existing in the above prior art.

[0012] To achieve the above object, the present utility model provides an intelligent vacuum concentration device, which includes: a vacuum control system, a cooling water circulation system, and a vacuum parallel evaporation system, wherein:

[0013] The vacuum control system includes a control terminal, a condenser, a collection bottle, a steam temperature sensor, a pressure sensor, a proportional solenoid valve, and a vacuum pump.

[0014] The cooling water circulation system includes a cooling water circulation instrument, an outlet water temperature sensor, and a return water temperature sensor.

[0015] The vacuum parallel evaporation system includes a vacuum parallel concentration instrument, an optical constant volume sensor, a vortex mechanism, and a container.

[0016] The steam temperature sensor, the pressure sensor, the proportional solenoid valve, the vacuum pump, the cooling water circulation instrument, the outlet water temperature sensor, the return water temperature sensor, the vacuum parallel concentration instrument, the optical constant volume sensor, and the vortex mechanism are all connected to the control terminal.

[0017] The condenser is internally provided with a serpentine tube. The condenser has six interfaces, namely the first interface to the sixth interface. The first interface is located at the lower side position of the condenser. The steam temperature sensor is arranged at the first interface or on the pipeline between the condenser and the vacuum parallel concentrator. The second interface is located at the upper side position of the condenser. The proportional solenoid valve is connected to the pipeline between the second interface and the vacuum pump. The pressure sensor is arranged on the pipeline between the vacuum pump and the proportional solenoid valve or on the pipeline between the condenser and the vacuum parallel concentrator. The third interface and the fourth interface are arranged at the upper side position of the condenser. The third interface is the cooling water circulation inlet, and the fourth interface is the cooling water circulation outlet. The cooling water circulator is arranged between the third interface and the fourth interface. The outlet water temperature sensor is arranged on the pipeline between the cooling water circulator and the third interface. The return water temperature sensor is arranged on the pipeline between the cooling water circulator and the fourth interface. The fifth interface is arranged at the lower side position of the condenser and is connected to the upper opening of the container. The sixth interface is located at the bottom of the condenser and is connected to the upper opening of the collection bottle.

[0018] The upper part of the container is provided with a sealing cover. The lower part of the container is placed inside the vacuum parallel concentrator, which is used to heat the container by water bath or metal bath. The bottom of the container has a tail tube. The optical constant volume sensor is arranged outside the tail tube. The vortex mechanism is located at the bottom of the vacuum parallel concentrator and is used to shake the container.

[0019] In an embodiment of the present invention, the optical constant volume sensor includes a light emitting diode and a photosensitive diode.

[0020] In an embodiment of the present invention, the optical constant volume sensor includes an optical fiber, a light emitting diode and a photosensitive diode. The light emitting diode and the photosensitive diode are arranged outside the vacuum parallel concentrator. The optical fiber is arranged outside the tail tube and is connected to the light emitting diode and the photosensitive diode. The emitted light and the received light are guided to the light emitting diode and the photosensitive diode by the optical fiber.

[0021] In an embodiment of the present invention, the vortex mechanism is provided with a motor to drive the container to shake.

[0022] The intelligent vacuum concentration device provided by the present invention can monitor and control the cooling water, steam temperature, vacuum degree, etc. in the concentration process in real time, thus realizing a high degree of automation of the concentration work, reducing the participation of manual labor, and improving the concentration efficiency. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural diagram of an intelligent vacuum concentration device according to an embodiment of the present invention. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Figure 1 It is a schematic structural diagram of an intelligent vacuum concentration device according to an embodiment of the present invention. As Figure 1 shown, the intelligent vacuum concentration device provided by the present invention includes: a vacuum control system, a cooling water circulation system, and a vacuum parallel evaporation system, where:

[0027] The vacuum control system includes a control terminal 1, a condenser 2, a collection bottle 3, a steam temperature sensor 7, a pressure sensor 5, a proportional solenoid valve 6, and a vacuum pump 4.

[0028] The cooling water circulation system includes a cooling water circulation instrument 100, an outlet water temperature sensor 101, and a return water temperature sensor 102.

[0029] The vacuum parallel evaporation system includes a vacuum parallel concentration instrument 200, an optical constant volume sensor 203, a vortex mechanism 202, and a container 201.

[0030] The steam temperature sensor 7, the pressure sensor 5, the proportional solenoid valve 6, the vacuum pump 4, the cooling water circulation instrument 100, the outlet water temperature sensor 101, the return water temperature sensor 102, the vacuum parallel concentration instrument 100, the optical constant volume sensor 203, and the vortex mechanism 202 are all connected to the control terminal 1.

[0031] As Figure 1As shown, a serpentine tube is provided inside the condenser 2. The serpentine tube increases the condensation area inside the condenser 2, thereby improving the condensation efficiency. The condenser 2 has six interfaces, namely the first interface 21 to the sixth interface 26. The first interface 21 is located at the lower side position of the condenser 2. The steam temperature sensor 7 is arranged at the first interface 21 (or on the pipeline between the condenser 2 and the vacuum parallel concentrator 200), and is used to sense the temperature of the steam evaporated from the vacuum parallel concentrator 200. The second interface 22 is located at the upper side position of the condenser 2. The proportional solenoid valve 6 is connected to the pipeline between the second interface 22 and the vacuum pump 4. The proportional solenoid valve 6 can adjust the opening degree to control the vacuum degree of the vacuum control system. The pressure sensor 5 is arranged on the pipeline between the vacuum pump 4 and the proportional solenoid valve 6 (or on the pipeline between the condenser 2 and the vacuum parallel concentrator 200). The third interface 23 and the fourth interface 24 are arranged at the upper side position of the condenser 2. The third interface 23 is the cooling water circulation inlet, and the fourth interface 24 is the cooling water circulation outlet. The cooling water circulator 100 is arranged between the third interface 23 and the fourth interface 24. The cooling water circulator 100 is used to drive the cooling water to flow inside the serpentine tube. The outlet water temperature sensor 101 is arranged on the pipeline between the cooling water circulator 100 and the third interface 23, and is used to measure the temperature of the water flowing out from the cooling water circulator 100. The return water temperature sensor 102 is arranged on the pipeline between the cooling water circulator 100 and the fourth interface 24, and is used to measure the temperature of the water flowing out from the condenser 2. The fifth interface 25 is arranged at the lower side position of the condenser 2 and is connected to the upper opening of the container 201. The sixth interface 26 is located at the bottom of the condenser 2 and is connected to the upper opening of the collection bottle 3. The condenser 2 condenses the steam into a liquid solvent, and the collection bottle 3 is used to recover the solvent.

[0032] A sealing cover is provided at the upper part of the container 201. The lower part of the container 201 is placed inside the vacuum parallel concentrator 100. The vacuum parallel concentrator 100 is used to perform water bath or metal bath heating on the container 201 so that the solvent in the container evaporates into steam. The bottom of the container 201 has a tail pipe A. As Figure 1 shown in the figure, the tail pipe A is in the shape of a funnel. The optical constant volume sensor 203 is arranged outside the tail pipe A. The vortex mechanism 202 is located at the bottom of the vacuum parallel concentrator 100. The vortex mechanism 202 is used to shake the container 201 so that the solvent inside the container 201 swings in a vortex, thereby increasing the evaporation area of the liquid inside the container 201 and improving the uniform heating of the solvent.

[0033] In an embodiment of the present utility model, the optical constant volume sensor 203 includes a light emitting diode and a photosensitive diode. The principle is that when the liquid level in the container 201 is higher than the detection position of the optical constant volume sensor 203, the water bath, the container 201, and the liquid in the container 201 in the vacuum parallel concentrator 100 are all penetrated by the light emitted by the light source. When the liquid level in the container 201 reaches the detection position of the optical constant volume sensor 203, the light emitted by the light source is refracted. In these two cases, the electrical signals output by the optical constant volume sensor 203 are different, and the change in the electrical signal is used to determine whether the liquid level that needs to be constant volume has been reached.

[0034] In an embodiment of the present utility model, the optical constant volume sensor 203 includes an optical fiber, a light emitting diode, and a photosensitive diode. The light emitting diode and the photosensitive diode are arranged outside the vacuum parallel concentrator 100. The optical fiber is arranged outside the tail pipe and is connected to the light emitting diode and the photosensitive diode. The emitted light (the light directly emitted by the light source) and the received light (the light refracted by the light emitted by the light source) are guided to the light emitting diode and the photosensitive diode by the optical fiber.

[0035] In an embodiment of the present utility model, a motor is provided in the vortex mechanism 202, and the container is shaken by the motor.

[0036] The intelligent vacuum concentration device provided by the present utility model can perform real-time monitoring and control on the cooling water, steam temperature, vacuum degree, etc. during the concentration process, thereby realizing a high degree of automation of the concentration work, reducing the participation of manual labor, and thus improving the concentration efficiency.

[0037] Those of ordinary skill in the art can understand that the drawings are only schematic diagrams of an embodiment, and the modules or processes in the drawings are not necessarily essential for implementing the present utility model.

[0038] Those of ordinary skill in the art can understand that the modules in the device in the embodiment can be distributed in the device of the embodiment according to the description of the embodiment, or can be correspondingly changed to be located in one or more devices different from this embodiment. The modules of the above embodiment can be combined into one module, or can be further split into multiple sub-modules.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An intelligent vacuum concentration device, characterized in that, Including: A vacuum control system, a cooling water circulation system, and a vacuum parallel evaporation system, where: The vacuum control system includes a control terminal, a condenser, a collection bottle, a steam temperature sensor, a pressure sensor, a proportional solenoid valve, and a vacuum pump. The cooling water circulation system includes a cooling water circulator, an outlet water temperature sensor, and a return water temperature sensor. The vacuum parallel evaporation system includes a vacuum parallel concentrator, an optical constant volume sensor, a vortex mechanism, and a container. The steam temperature sensor, the pressure sensor, the proportional solenoid valve, the vacuum pump, the cooling water circulator, the outlet water temperature sensor, the return water temperature sensor, the vacuum parallel concentrator, the optical constant volume sensor, and the vortex mechanism are all connected to the control terminal. The condenser is internally provided with a serpentine tube. The condenser has 6 interfaces, which are the first interface to the sixth interface respectively. The first interface is located at the lower side position of the condenser. The steam temperature sensor is arranged at the first interface or on the pipeline between the condenser and the vacuum parallel concentrator. The second interface is located at the upper side position of the condenser. The proportional solenoid valve is connected to the pipeline between the second interface and the vacuum pump. The pressure sensor is arranged on the pipeline between the vacuum pump and the proportional solenoid valve or on the pipeline between the condenser and the vacuum parallel concentrator. The third interface and the fourth interface are arranged at the upper side position of the condenser. The third interface is the cooling water circulation inlet, and the fourth interface is the cooling water circulation outlet. The cooling water circulator is arranged between the third interface and the fourth interface. The outlet water temperature sensor is arranged on the pipeline between the cooling water circulator and the third interface. The return water temperature sensor is arranged on the pipeline between the cooling water circulator and the fourth interface. The fifth interface is arranged at the lower side position of the condenser and is connected to the upper opening of the container. The sixth interface is located at the bottom of the condenser and is connected to the upper opening of the collection bottle. The upper part of the container is provided with a sealing cover. The lower part of the container is placed inside the vacuum parallel concentrator. The vacuum parallel concentrator is used to heat the container by water bath or metal bath. The bottom of the container has a tail pipe. The optical constant volume sensor is arranged outside the tail pipe. The vortex mechanism is located at the bottom of the vacuum parallel concentrator. The vortex mechanism is used to shake the container.

2. The intelligent vacuum concentration device according to claim 1, characterized in that, The optical constant volume sensor includes a light emitting diode and a photodiode.

3. The intelligent vacuum concentration device according to claim 1, wherein The optical constant volume sensor includes an optical fiber, a light emitting diode, and a photodiode. The light emitting diode and the photodiode are arranged outside the vacuum parallel concentrator. The optical fiber is arranged outside the tail pipe. The optical fiber is connected to the light emitting diode and the photodiode. The emitted light and the received light are guided to the light emitting diode and the photodiode by the optical fiber.

4. The intelligent vacuum concentration device according to claim 1, characterized in that, A motor is provided in the vortex mechanism to drive the container to shake.

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