WO2021147457A1 - 一种除气系统 - Google Patents

一种除气系统 Download PDF

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Publication number
WO2021147457A1
WO2021147457A1 PCT/CN2020/126540 CN2020126540W WO2021147457A1 WO 2021147457 A1 WO2021147457 A1 WO 2021147457A1 CN 2020126540 W CN2020126540 W CN 2020126540W WO 2021147457 A1 WO2021147457 A1 WO 2021147457A1
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Prior art keywords
degassing
pump
control
solvent
degassing system
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PCT/CN2020/126540
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English (en)
French (fr)
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冯赫天
彭民伟
康炎
李乔乔
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深圳达远辰光科技有限公司
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Publication of WO2021147457A1 publication Critical patent/WO2021147457A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0073—Degasification of liquids by a method not covered by groups B01D19/0005 - B01D19/0042

Definitions

  • the invention relates to the technical fields of chromatography, ultrasound and dissolution media, and in particular to a degassing system for chromatography, ultrasound and dissolution media.
  • degassing machines are often used to degas reagents.
  • ultrasonic defoaming equipment is often used to degas the reagents;
  • HPLC solvents ultrasonic defoaming, helium replacement or vacuum degassing is often used for degassing; for many application requirements in the chemical industry, it is often used Degassing is carried out by vacuuming and purging with nitrogen.
  • Ultrasonic defoaming equipment uses an ultrasonic vibrator to generate ultrasonic waves, so that the ultrasonic waves are transmitted in the liquid. Part of the energy of the ultrasonic waves is transferred to the liquid. Under the action of the ultrasonic waves, the liquid and gas rub against and separate each other, and finally the gas gathers into bubbles and dissolves out.
  • the disadvantage of this method of degassing is that there is strong noise in the degassing process, and the degassing effect is not good.
  • Vacuum degassing refers to the use of a vacuum pump to pump the solvent bottle to a negative pressure to separate the gas in the solvent from the solvent.
  • the size of negative pressure affects the effect of vacuum degassing.
  • vacuum degassing can achieve better degassing effect and high degassing efficiency.
  • the structure of vacuum degassing equipment is complicated, and the plastic film in the degassing equipment It is easy to be blocked, requires frequent maintenance, and is very troublesome to use.
  • the present invention provides a degassing system for chromatography, ultrasound and dissolution media, which aims to suck out the solvent in the solvent bottle through a degassing pump and perform a circulating flow, and realize the separation of gas during the circulating flow, and finally the solvent is returned In the solvent bottle, the gas is completely separated; in the process of circulation, the principle that the environmental pressure decreases, the solubility of the gas in the solvent decreases, and the principle of separation caused by gas-liquid friction is used to realize the separation of gas from the solvent.
  • a degassing system includes a solvent bottle forming a circulating liquid path and a degassing pump.
  • the circulating liquid path includes a multi-section pump tube whose inner diameter gradually increases.
  • the multi-stage pump tube set in the circulating liquid path increases the internal space after the inner diameter increases, and the solvent enters the other section of the pump tube with the larger inner diameter from the pump tube with the smaller inner diameter.
  • the air pressure decreases in a larger space
  • the gas solubility of the solvent decreases, and the gas that has been dissolved in the solvent is separated from the solvent; at the same time, because the solvent enters the larger section of the pump from the smaller section of the pump tube
  • the collision and friction between the inner wall of the tube, the solvent and the pump tube accelerate the rate of gas precipitation from the solvent.
  • the gas in the solvent gradually separates out of the solvent, achieving the purpose of degassing.
  • the solvent is discharged from the solvent bottle to the degassing pump, during which the degassing process can be realized, that is, a multi-stage pump tube is arranged between the discharge port of the solvent bottle and the liquid inlet section of the degassing pump, Specifically, the structure of the circulating liquid path is optimized here, and a feasible way is given: at least two sections of pump tube are set between the solvent bottle and the liquid inlet end of the degassing pump, and the inner diameter of the pump tube is from the solvent The liquid inlet end of the bottle to the degassing pump increases step by step.
  • three sections of pump tubes are arranged between the solvent bottle and the liquid inlet end of the degassing pump, and the inner diameter of the pump tube gradually increases from the solvent bottle to the liquid inlet end of the degassing pump.
  • the two adjacent sections of pump pipes are connected by adapters, and the first section of pump pipe is deep below the liquid level of the solvent bottle, and the third section of pump pipe is connected to the liquid inlet end of the degassing pump.
  • the solvent discharged from the liquid outlet end of the degassing pump finally returns to the solvent bottle.
  • the solvent and air returned to the solvent bottle are separated.
  • the air needs to be discharged after returning to the solvent bottle to avoid re-dissolving into the solvent.
  • the structure of the bottle is optimized, and a feasible solution is given: the solvent bottle is provided with a gas-permeable structure.
  • ventilation holes or gaps are provided on the solvent bottle, so as to realize the discharge of air.
  • the degassing system further includes a control device for controlling the degassing pump, and the control device includes a control board electrically connected to the degassing pump.
  • control device disclosed in the above technical solution is optimized to more reasonably control the operation of the degassing pump, and the following feasible solutions are listed.
  • control device includes a speed regulation for controlling the rotation speed of the degassing pump
  • the speed regulating device is electrically connected to the degassing pump.
  • the control device further includes a timing device arranged on the control board, and the timing device is used to send timing information to the control board, thereby controlling the working time of the degassing pump.
  • the timing device can be arranged on the control board.
  • control device further includes an operation and display device connected to the control board, and the operation and display device is used for human
  • the computer interacts and sends interactive instructions to the control board. After setting up the operation and display device, it can cooperate with the control panel to design the operation and display interface program, which is convenient for man-machine interaction.
  • the operation and display device may adopt a touch screen.
  • control device is connected to the reminding device, the reminding device is electrically connected to the control board, and the control board controls the opening and closing.
  • the reminding device may adopt an audible and visual alarm, such as a buzzer, etc., whose function is to activate the reminding device to remind the operator when a degassing process is over.
  • an audible and visual alarm such as a buzzer, etc.
  • the degassing system disclosed in the above technical solutions is optimized, and the following feasible solutions are listed.
  • the degassing system includes a control power source, and the control power source is used to supply power to the control device and control The connection between the power supply and the control device is controlled by a control switch.
  • the degassing system disclosed in the above technical solutions is optimized, and the following feasible solutions are listed.
  • the degassing system further includes a driving power source, and the driving power source is used to supply power to the degassing pump, and The connection between the driving power supply and the control device is controlled through a driving switch.
  • the driving power supply and/or the control power supply are both powered by a 220V DC power supply, and a rechargeable power supply can also be used. While providing power supply for energy, it can also realize electricity storage through charging.
  • the degassing system is applied to the technical fields of chromatography, ultrasound and dissolution media.
  • the degassing system disclosed by the present invention is provided with a pump tube whose inner diameter is gradually increased, and the air is separated from the solvent by reducing the pressure and reducing the solubility of the air. At the same time, the collision and friction between the solvent and the tube wall promote the gas from the solvent. The precipitation improves the degassing efficiency of the degassing system, and the overall structure is simple, the operation is convenient, and the realization is easy.
  • Figure 1 is a schematic diagram of the structure of the degassing system
  • Figure 2 is a schematic diagram of the connection of the functional modules of the degassing system.
  • the functions/acts that appear may differ from the order in which they appear in the figures. For example, depending on the functions/actions involved, it may actually be executed concurrently in nature, or sometimes two diagrams shown in succession may be executed in reverse order.
  • this embodiment provides a degassing system, which includes a solvent bottle 2 forming a circulating liquid path and a degassing pump 5.
  • the circulating liquid path includes a multi-section pump tube 3 whose inner diameter is gradually increased. .
  • the multi-stage pump tube 3 arranged in the circulating liquid path increases the internal space after the inner diameter increases, and the solvent enters the other section of the pump tube with the larger inner diameter from the pump tube with the smaller inner diameter. Later, when the air pressure decreases in a larger space, the gas solubility of the solvent decreases, and the gas that has been dissolved in the solvent is separated from the solvent; at the same time, because the solvent enters the larger section from the smaller section of the pump tube The collision and friction between the pump tube, the solvent and the inner wall of the pump tube 3 accelerate the speed of gas precipitation from the solvent. Under the above circumstances, the gas in the solvent gradually separates out of the solvent, achieving the purpose of degassing.
  • the solvent is discharged from the solvent bottle 2 and then discharged to the degassing pump 5.
  • the degassing process can be realized, that is, a multi-stage pump tube is arranged between the discharge port of the solvent bottle 2 and the liquid inlet section of the degassing pump 5 3.
  • the structure of the circulating liquid path is optimized here, and a feasible way is given: at least two sections of pump pipe 3 are set between the solvent bottle 2 and the liquid inlet end of the degassing pump 5, and the pump The inner diameter of the tube 3 gradually increases from the solvent bottle 2 to the liquid inlet end of the degassing pump 5.
  • three sections of pump tube 3 are arranged between the solvent bottle 2 and the liquid inlet end of the degassing pump 5, and the inner diameter of the pump tube 3 gradually increases from the solvent bottle 2 to the liquid inlet end of the degassing pump 5.
  • two adjacent sections of pump pipes 3 are connected through the adapter 4, and the first section of pump pipe is deep below the liquid level of the solvent bottle 2, and the third section of pump pipe 3 is connected to the liquid inlet end of the degassing pump 5.
  • the specific setting is that the inner diameter of the first section of the pump tube from the solvent bottle 2 to the degassing pump 5 is 1mm, the wall thickness of the pump tube 3 is 1mm, and the length is 150mm; the first section of the pump tube passes a 2.4mm to 1.6mm adapter 4 Connect the second section of the pump tube, the inner diameter of the second section of pump tube is 2mm, the wall thickness of the pump tube 3 is 1mm, and the length of the second section of pump tube is 40mm; the second section of pump tube is rotated by 4.0mm to 2.4mm The connector 4 is connected to the third section of the pump tube.
  • the inner diameter of the pump tube 3 is 5mm, the wall thickness of the pump tube 3 is 1.5mm, and the length of the third section of the pump tube is 500mm.
  • the third section of the pump tube is connected to the The liquid inlet of the air pump 5.
  • the discharge end of the degassing pump 5 is connected to the fourth section of the pump tube through a 1/8 joint.
  • the inner diameter of the fourth section of the pump tube is 5mm
  • the wall thickness of the pump tube 3 is 1.5mm
  • the length of the pump tube 3 is 700mm. Connect the pump tubing to the solvent bottle 2.
  • the degassing pump 5 can be a LY57CDC24V miniature magnetic drive gear pump.
  • the flow rate of the solvent 2 through the degassing pump 5 is 1 L/min, and the degassing effect is 1.0 ppm.
  • the pump tube 3, the adapter 4, the joint and the degassing pump 5 are all subjected to corrosion-resistant treatment, and the pump tube 3, the adapter 4 and the joint are all made of corrosion-resistant materials, and the inside of the degassing pump 5 It is equipped with a corrosion-resistant Teflon coating; after this setting, the degassing system is chemically inert and can be used for analytical grade chemical applications and degassing of strong acid and alkali solvents.
  • the solvent discharged from the liquid outlet end of the degassing pump 5 finally returns to the solvent bottle 2, and the solvent 2 returning to the solvent bottle 2 is separated from the air.
  • the air needs to be discharged after returning to the solvent bottle 2 to avoid re-dissolving into the solvent 2. Therefore, the structure of the solvent bottle 2 is optimized, and a feasible solution is given: the solvent bottle 2 is provided with a gas-permeable structure.
  • the solvent bottle 2 is provided with vent holes or vent gaps, so as to realize the discharge of air.
  • the degassing system further includes a control device for controlling the degassing pump 5, and the control device includes a control board electrically connected to the degassing pump 5.
  • control device includes a speed regulating device for controlling the speed of the degassing pump 5
  • the potentiometer is electrically connected to the degassing pump.
  • the control device further includes a timing device arranged on the control board, and the timing device is used to send timing instructions to the control board to control the working time of the degassing pump.
  • the timing device can be set on the control board.
  • the timing device can adopt a conventional time module to realize time recording and sending of time commands.
  • control device further includes an operation and display device connected to the control board, and the operation and display device is used for man-machine interaction and Send interactive instructions to the control board. After setting up the operation and display device, it can cooperate with the control panel to design the operation and display interface program, which is convenient for man-machine interaction.
  • the operation and display device adopts a 5-inch capacitive touch screen.
  • control device is connected to the reminding device, the reminding device is electrically connected to the control board, and the control board controls the opening and closing.
  • the reminding device can be an audible and visual alarm, such as a buzzer, etc., whose function is to activate the reminding device to remind the operator when a degassing process is over.
  • the degassing system disclosed in the above technical scheme is optimized, and the following feasible schemes are listed. Specifically: the degassing system includes a control power supply, and the control power supply is used to supply power to the control device, and the control power supply and control The connection between the devices is controlled by a control switch.
  • control power supply adopts a 5V (2A) DC power supply.
  • the degassing system disclosed in the above technical scheme is optimized, and the following feasible schemes are listed.
  • the degassing system further includes a driving power supply, and the driving power supply is used to supply power to the degassing pump 5, and the driving power supply
  • the connection with the control device is controlled through a drive switch.
  • the driving power supply supplies power to the degassing pump 5 through the control board, so that more accurate power-on, power-off, etc. are realized, so as to accurately control the start and stop of the degassing pump 5.
  • the driving power supply adopts a 24V (5A) DC power supply.
  • control switch and the drive switch are both relays, and both the drive power supply and/or the control power supply can adopt a rechargeable power supply. While supplying power, it can also realize electricity storage through charging.
  • ⁇ P 8Q ⁇ l/( ⁇ R ⁇ 4), where ⁇ P is the pressure difference, Q is the volume flow, l is the length of the pump tube, R is the inner diameter of the pump tube, and ⁇ is the viscosity coefficient. Assuming that the viscosity of water at 25degC is 0.8949X10 ⁇ -3Pas, the total pressure drop of each pipeline is calculated to be 66.5kPa.
  • the air pressure value of each pump pipe section is shown in the following table:
  • the atmospheric pressure is 101kPa
  • the pressure drop after the solvent enters the first section of the pump tube has reached 56.7kPa
  • the total pressure drop at the liquid inlet of the pump reaches 66.5kPa
  • the actual pressure at the second section of the pump tube and the third section of the pump tube is 30 ⁇ 40kPa, much lower than atmospheric pressure.
  • the solubility of the gas decreases sharply, and the gas in the solvent forms a bubble precipitation system.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Degasification And Air Bubble Elimination (AREA)

Abstract

一种除气系统，包括形成循环液路的溶剂瓶(1)和除气泵(5)，所述的循环液路包括内径逐级增大的多段泵管(3)。通过设置内径逐级增加的泵管(3)，通过降低压强减小空气溶解度的方式使空气从溶剂中析出，同时借助溶剂与管壁的碰撞和摩擦促进气体从溶剂中析出，提高了除气系统的除气效率，而且整体结构简单，操作方便，实现也容易。

Description

一种除气系统 技术领域
本发明涉及层析、超声和溶出介质技术领域，具体涉及一种用于层析、超声和溶出介质的除气系统。
背景技术
实验室中，常采用除气机对试剂进行除气。对于一般试剂，常采用超声波消泡设备对试剂进行除气；对于HPLC溶剂，常采用超声消泡、通氦气置换或者真空除气的方式进行除气；对于化工领域的诸多应用需求，常采用抽真空和通氮气进行置换的方式进行除气。
超声波消泡设备是利用超声振子产生超声波，使超声波在液体中传递，超声波的一部分能量传递给液体，在超声波作用下，液体和气体相互摩擦、分离，最后气体聚集成气泡溶出。这种方法除气的缺点是除气过程中存在很强的噪音，并且除气效果不佳。
真空除气是指利用真空泵将溶剂瓶抽成负压，使溶剂中的气体与溶剂实现分离。负压的大小影响真空除气的效果，一般来说真空除气可以达到比较好的除气效果，除气效率也比较高，但是真空除气的设备结构复杂，而且除气设备中的塑料膜容易被堵塞，需要经常维护，使用起来非常麻烦。
通氦气和氮气置换的缺点是无法达到很好的除气效果，且操作较为复杂。
因此，鉴于现有技术中的不足，还需要提出更为合理的技术方案，解决现有技术中存在的技术问题。
发明内容
本发明提供一种用于层析、超声和溶出介质的除气系统，旨在通过除气泵将溶剂瓶内的溶剂吸出并进行循环流动，在循环流动的过程中实现气体的分离，最终溶剂回到溶剂瓶中，而气体彻底分离；在循环的过程中，利用了环境压强减小，溶剂中气体的溶解度减小的原理，以及气液摩擦导致分离的原理，从而实现气体从溶剂中分离。
为了实现上述效果，本发明所采用的技术方案为：
一种除气系统，包括形成循环液路的溶剂瓶和除气泵，所述的循环液路包括内径逐级增大的多段泵管。
上述公开的除气系统，在循环液路中设置的多级泵管，内径在增大后其内部的空间增大，溶剂从内径较小的一段泵管进入内径较大的另一段泵管后，在更大的空间内气压减小，则溶剂的气体溶解度减小，原本已经溶于溶剂的气体便从溶剂中析出；同时，由于溶剂从较小的一段泵管进入较大的另一段泵管，溶剂与泵管的内壁之间发生碰撞和摩擦，加速了气体从溶剂中析出的速度。在上述情况下，溶剂中的气体逐渐从溶剂中析出，实现了除气的目的。
进一步的，所述的溶剂从溶剂瓶导出后被排向除气泵，在该期间可实现除气的过程，即溶剂瓶的排出口与除气泵的进液段之间设置为多级泵管，具体的，此处对循环液路的结构进行优化，举出一种可行的方式：所述的溶剂瓶与除气泵的进液端之间至少设置两段泵管，且泵管的内径从溶剂瓶往除气泵的进液端逐级增大。
优选的，所述的溶剂瓶与除气泵的进液端之间设置有三段泵管，且泵管的内径从溶剂瓶往除气泵的进液端逐级增大。其中，相邻的两段泵管通过转接头实现连接，且第一段泵管深入溶剂瓶的液面以下，第三段泵管连通至除气泵的进液端。
进一步的，从除气泵的出液端排出的溶剂最终回到溶剂瓶，回到溶剂瓶的溶剂与空气实现了分离，空气回到溶剂瓶后需要排出，避免重新溶入溶剂中，故对溶剂瓶的结构进行优化，举出一种可行的方案：所述的溶剂瓶上设置有透气结构。
优选的，所述的溶剂瓶上设置透气孔或透气间隙，从而实现空气的排出。
进一步的，除气泵的运转速度、运转时间会影响循环液路中溶剂的流速，合理的流速可以促进气体从溶剂中高效析出，为提高气体析出的效率，对除气系统进行优化，具体的，举出如下可行的方案：所述的除气系统还包括用于控制除气泵的控制装置，所述的控制装置包括与除气泵电连接的控制板。
进一步的，对上述技术方案中公开的控制装置进行优化，以更加合理地控制除气泵的运转，举出如下可行的方案，具体的：所述的控制装置包括用于控制除气泵转速的调速装置，调速装置与除气泵电连接。
进一步的，对除气泵的的工作运转，可进行预约设置，实现启动倒计时、停止倒计时等控制，以达到更加精确的运行控制管理，因此对上述技术方案中公开的控制装置进行优化，举出如下可行的技术方案：所述的控制装置还包括设置在控制板上的定时装置，定时装置用于发送定时信息给控制板，从而控制除气泵的工作时长。
优选的，所述的定时装置可设置于控制板上。
进一步的，对上述技术方案中公开的控制装置进行优化，举出如下可行的方案：所述的控制装置还包括与控制板连接的操作及显示装置，所述的操作及显示装置用于进行人机交互并将交互指令发送给控制板。设置操作及显示装置后，可与控制板配合设计操作及显示界面程序，方便人机交互。
优选的，所述的操作及显示装置可采用触控屏。
进一步的，对上述技术方案中公开的控制装置进行优化，举出如下可行的方案：所述的控制装置连接提醒装置，提醒装置与控制板电连接并由控制板控制打开和关闭。
优选的，所述的提醒装置可采用声光报警器，例如可采用蜂鸣器等，其作用在于，当一个除气过程结束后，提醒装置启动用以提醒操作者。
进一步的，对上述技术方案中公开的除气系统进行优化，举出如下可行的方案，具体的：所述的除气系统包括控制电源，所述的控制电源用于给控制装置供电，且控制电源与控制装置之间通过控制开关控制连接通断。
进一步的，对上述技术方案中公开的除气系统进行优化，举出如下可行的方案，具体的：所述的除气系统还包括驱动电源，所述的驱动电源用于给除气泵供电，且驱动电源与控制装置之间通过驱动开关控制连接通断。
优选的，驱动电源和/或控制电源均通过220V直流电源供电，也可采用可 充电电源，在提供电源供能的同时，也能够通过充电的方式实现蓄电。
优选的，所述的除气系统应用于层析、超声和溶出介质技术领域。
与现有技术相比，本发明的有益效果为：
本发明公开的除气系统，通过设置了内径逐级增加的泵管，通过降低压强减小空气溶解度的方式使空气从溶剂中析出，同时借助溶剂与管壁的碰撞和摩擦促进气体从溶剂中析出，提高了除气系统的除气效率，而且整体结构简单，操作方便，实现也容易。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅表示出了本发明的部分实施例，因此不应看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它相关的附图。
图1是除气系统的组成结构示意图；
图2是除气系统的功能模块连接示意图。
上述附图中，各个标号的含义为：1、溶剂瓶；2、溶剂；3、泵管；4、转接头；5、除气泵。
具体实施方式
下面结合附图及具体实施例对本发明做进一步阐释。
在此需要说明的是，对于这些实施例方式的说明用于帮助理解本发明，但并不构成对本发明的限定。本文公开的特定结构和功能细节仅用于描述本发明的示例实施例。然而，可用很多备选的形式来体现本发明，并且不应当理解为本发明限制在本文阐述的实施例中。
本文使用的术语仅用于描述特定实施例，并且不意在限制本发明的示例实施例。如本文所使用的，单数形式“一”、“一个”以及“该”意在包括复数 形式，除非上下文明确指示相反意思。还应当理解术语“包括”、“包括了”、“包含”、和/或“包含了”当在本文中使用时,指定所声明的特征、整数、步骤、操作、单元和/或组件的存在性,并且不排除一个或多个其他特征、数量、步骤、操作、单元、组件和/或他们的组合存在性或增加。
还应当注意到在一些备选实施例中，所出现的功能/动作可能与附图出现的顺序不同。例如,取决于所涉及的功能/动作,实际上可以实质上并发地执行,或者有时可以以相反的顺序来执行连续示出的两个图。
在下面的描述中提供了特定的细节,以便于对示例实施例的完全理解。然而,本领域普通技术人员应当理解可以在没有这些特定细节的情况下实现示例实施例。例如可以在框图中示出系统，以避免用不必要的细节来使得示例不清楚。在其他实施例中，可以不以非必要的细节来示出众所周知的过程、结构和技术，以避免使得示例实施例不清楚。
实施例
如图1、图2所示，本实施例提供一种除气系统，包括形成循环液路的溶剂瓶2和除气泵5，所述的循环液路包括内径逐级增大的多段泵管3。
上述公开的除气系统，在循环液路中设置的多级泵管3，内径在增大后其内部的空间增大，溶剂从内径较小的一段泵管进入内径较大的另一段泵管后，在更大的空间内气压减小，则溶剂的气体溶解度减小，原本已经溶于溶剂的气体便从溶剂中析出；同时，由于溶剂从较小的一段泵管进入较大的另一段泵管，溶剂与泵管3的内壁之间发生碰撞和摩擦，加速了气体从溶剂中析出的速度。在上述情况下，溶剂中的气体逐渐从溶剂中析出，实现了除气的目的。
所述的溶剂从溶剂瓶2导出后被排向除气泵5，在该期间可实现除气的过程，即溶剂瓶2的排出口与除气泵5的进液段之间设置为多级泵管3，具体的，此处对循环液路的结构进行优化，举出一种可行的方式：所述的溶剂瓶2与除气泵5的进液端之间至少设置两段泵管3，且泵管3的内径从溶剂瓶2往除气泵5的进液端逐级增大。
本实施例中，所述的溶剂瓶2与除气泵5的进液端之间设置有三段泵管3， 且泵管3的内径从溶剂瓶2往除气泵5的进液端逐级增大。其中，相邻的两段泵管3通过转接头4实现连接，且第一段泵管深入溶剂瓶2的液面以下，第三段泵管3连通至除气泵5的进液端。
具体设置的是，从溶剂瓶2到除气泵5的第一段泵管内径为1mm，泵管3壁厚度为1mm，且长度为150mm；第一段泵管通过2.4mm转1.6mm的转接头4连接第二段泵管，第二段泵管的内径为2mm，泵管3壁厚为1mm，且第二段泵管的长度为40mm；第二段泵管通过4.0mm转2.4mm的转接头4连接第三段泵管，泵管3的内径为5mm，泵管3壁厚为1.5mm，且第三段泵管的长度为500mm，第三段泵管通过1/8接头连通至除气泵5的进液端。除气泵5的出液端通过1/8接头连接第四段泵管，第四段泵管的内径为5mm，泵管3壁厚为1.5mm，且泵管3的长度为700mm，第四段泵管连接至溶剂瓶2。
同时，所述的除气泵5可采用LY57CDC24V微型磁驱动齿轮泵，在运转时，通过除气泵5的溶剂2流速为1L/min，除气效果为1.0ppm。
在本实施例中，所述的泵管3、转接头4、接头和除气泵5均经过耐腐蚀处理，其中泵管3、转接头4和接头均采用耐腐蚀材料制成，除气泵5内设置有耐腐蚀的特氟龙涂层；这样设置后，除气系统的化学惰性好，可用于分析级化学应用和强酸碱溶剂的除气。
从除气泵5的出液端排出的溶剂最终回到溶剂瓶2，回到溶剂瓶2的溶剂2与空气实现了分离，空气回到溶剂瓶2后需要排出，避免重新溶入溶剂2中，故对溶剂瓶2的结构进行优化，举出一种可行的方案：所述的溶剂瓶2上设置有透气结构。
本实施例中，所述的溶剂瓶2上设置透气孔或透气间隙，从而实现空气的排出。
除气泵5的运转速度、运转时间会影响循环液路中溶剂2的流速，合理的流速可以促进气体从溶剂2中高效析出，为提高气体析出的效率，对除气系统进行优化，具体的，举出如下可行的方案：所述的除气系统还包括用于控制除气泵5的控制装置，所述的控制装置包括与除气泵5电连接的控制板。
对上述技术方案中公开的控制装置进行优化，以更加合理地控制除气泵5的运转，举出如下可行的方案，具体的：所述的控制装置包括用于控制除气泵5转速的调速装置，在本实施例中，电位器与除气泵电连接。
对除气泵5的的工作运转，可进行预约设置，实现启动倒计时、停止倒计时等控制，以达到更加精确的运行控制管理，因此对上述技术方案中公开的控制装置进行优化，举出如下可行的技术方案：所述的控制装置还包括设置在控制板上的定时装置，定时装置用于向控制板发送定时指令，从而控制除气泵的工作时长。
具体的，所述的定时装置可设置于控制板上。具体的，所述的定时装置可采用常规的时间模块以实现时刻记录和时间指令的发送。
对上述技术方案中公开的控制装置进行优化，举出如下可行的方案：所述的控制装置还包括与控制板连接的操作及显示装置，所述的操作及显示装置用于进行人机交互并将交互指令发送给控制板。设置操作及显示装置后，可与控制板配合设计操作及显示界面程序，方便人机交互。
本实施例中，所述的操作及显示装置采用5寸电容触控屏。
对上述技术方案中公开的控制装置进行优化，举出如下可行的方案：所述的控制装置连接提醒装置，提醒装置与控制板电连接并由控制板控制打开和关闭。
本实施例中，所述的提醒装置可采用声光报警器，例如可采用蜂鸣器等，其作用在于，当一个除气过程结束后，提醒装置启动用以提醒操作者。
对上述技术方案中公开的除气系统进行优化，举出如下可行的方案，具体的：所述的除气系统包括控制电源，所述的控制电源用于给控制装置供电，且控制电源与控制装置之间通过控制开关控制连接通断。
在本实施例中，所述的控制电源采用5V(2A)的直流电源。
对上述技术方案中公开的除气系统进行优化，举出如下可行的方案，具体的：所述的除气系统还包括驱动电源，所述的驱动电源用于给除气泵5供电， 且驱动电源与控制装置之间通过驱动开关控制连接通断。具体的，驱动电源通过控制板给除气泵5供电，如此实现更为精确的通电、断电等，以精确控制除气泵5的启动、停止等。
本实施例中，所述的驱动电源采用24V(5A)的直流电源。
本实施例中，控制开关和驱动开关均为继电器，驱动电源和/或控制电源均可采用可充电电源，在提供电源的同时，也能够通过充电的方式实现蓄电。
在具体使用本实施例中公开的除气系统时，可获取如下对应的数据，能够反映出除气的有效性：
根据泊肃叶定律，△P＝8Qηl/(πR^4)，其中△P为压差，Q为体积流量，l为泵管长度，R为泵管内径，η为粘滞系数。设水在25degC下的粘度为0.8949X10^-3Pas，计算各个管路总压降为66.5kPa。各个泵管段的气压值如下表所示：
  第一段泵管 第二段泵管 第三段泵管 总压降
压降(Pa) 302.63943 9457.482 56744.89 66505.01
大气压为101kPa，溶剂进入第一段泵管后压降已经达到56.7kPa，泵的进液口总压降达到66.5kPa，因此在第二段泵管和第三段泵管处的实际压力为30～40kPa左右，远低于大气压。在较低的压力下，气体的溶解度急剧降低，溶剂中的气体形成气泡析出体系。
以上即为本发明列举的实施方式，但本发明不局限于上述可选的实施方式，本领域技术人员可根据上述方式相互任意组合得到其他多种实施方式，任何人在本发明的启示下都可得出其他各种形式的实施方式。上述具体实施方式不应理解成对本发明的保护范围的限制，本发明的保护范围应当以权利要求书中界定的为准，并且说明书可以用于解释权利要求书。

Claims (11)

  1. 一种除气系统，其特征在于：包括形成循环液路的溶剂瓶(1)和除气泵(5)，所述的循环液路包括内径逐级增大的多段泵管(3)。
  2. 根据权利要求1所述的除气系统，其特征在于：所述的溶剂瓶(1)与除气泵(5)的进液端之间至少设置两段泵管(3)，且泵管(3)的内径从溶剂瓶(1)往除气泵(5)的进液端逐级增大。
  3. 根据权利要求1或2所述的除气系统，其特征在于：所述的溶剂瓶(1)上设置有透气结构。
  4. 根据权利要求1所述的除气系统，其特征在于：所述的除气系统还包括用于控制除气泵(5)的控制装置，所述的控制装置包括与除气泵(5)电连接的控制板。
  5. 根据权利要求4所述的除气系统，其特征在于：所述的控制装置包括用于控制除气泵(5)转速的调速装置，调速装置与除气泵(5)电连接。
  6. 根据权利要求4所述的除气系统，其特征在于：所述的控制装置还包括设置在控制板上的定时装置，定时装置用于控制除气泵的工作时长。
  7. 根据权利要求4所述的除气系统，其特征在于：所述的控制装置还包括与控制板连接的操作及显示装置，所述的操作及显示装置用于进行人机交互并将交互指令发送给控制板。
  8. 根据权利要求4所述的除气系统，其特征在于：所述的控制装置连接提醒装置，提醒装置与控制板电连接并由控制板控制打开和关闭。
  9. 根据权利要求4所述的除气系统，其特征在于：所述的除气系统包括控制电源，所述的控制电源用于给控制装置供电，且控制电源与控制装置之间通过控制开关控制连接通断。
  10. 根据权利要求1所述的除气系统，其特征在于：所述的除气系统还包括驱动电源，所述的驱动电源用于给除气泵(5)供电，且驱动电源与控制装置之间通过驱动开关控制连接通断。
  11. 根据权利要求1～10任一项所述的除气系统，其在层析、超声和溶出介质方面的应用。
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