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Blowoff valve and liquid chromatograph

An evacuation valve and valve body technology, applied in the field of liquid chromatography, can solve the problems of cumbersome operation of the evacuation valve, damage to the system seal, increase in system pressure, etc. Effect

Pending Publication Date: 2019-06-14
山东悟空仪器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The operation of the traditional venting valve is cumbersome, and it is easy to cause the problem that the system pressure increases due to misoperation and the system seal is damaged

Method used

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  • Blowoff valve and liquid chromatograph
  • Blowoff valve and liquid chromatograph
  • Blowoff valve and liquid chromatograph

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] see figure 1 and figure 2 , this embodiment provides an emptying valve 01 for use with a transfer pump. The emptying valve 01 includes a valve body 001, a valve core 002 and a detection component 003. The valve core 002 is installed on the valve body 001 and can be relatively Move on the valve body 001 to adjust the working state of the valve body 001; the detection component 003 is installed on the valve body 001 or the valve core 002, and the detection component 003 is used to detect the working position of the valve core 002 relative to the valve body 001; the detection component 003 It is used for communication connection with the controller, the controller is used for communication connection with the delivery pump, and the controller adjusts the working state of the delivery pump according to the working position.

[0046] The emptying valve 01 provided by the present invention changes the working state of the valve body 001 by adjusting the position of the valv...

Embodiment 2

[0068] This embodiment provides a liquid chromatograph, including a delivery pump, a controller, and the emptying valve 01 mentioned in the above-mentioned embodiment 1. The outlet 1022 of the delivery pump communicates with the inlet 1012 of the valve body 001; the detection component 003 and the control The controller is connected in communication with the delivery pump, and the controller adjusts the working state of the delivery pump according to the working position of the spool 002. When there are air bubbles in the mobile phase, turn the spool 002 to move the spool 002 to the position of opening the exhaust port 1032. The controller detects that the spool 002 is at this position and controls the delivery pump to be in a state of high flow rate, and the air bubbles are discharged from the exhaust port. Hole 1032 vents.

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PUM

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Abstract

The invention provides a blowoff valve and a liquid chromatograph. The blowoff valve and the liquid chromatograph are used for cooperating with a conveying pump for use. The blowoff valve comprises avalve body, a valve element and a detection assembly, wherein the valve element is arranged on the valve body and can move relative to the valve body so as to adjust the working state of the valve body, the detection assembly is arranged on the valve body or the valve element, the detection assembly is used for detecting the working position of the valve element relative to the valve body, the detection assembly is used for being in communication connection with a controller, the controller is used for being in communication connection with the conveying pump, and the controller adjusts the working state of the conveying pump according to the working position. Thus, the control is convenient, fast and reliable. The liquid chromatograph comprises the blowoff valve and has all the advantagesof the blowoff valve.

Description

technical field [0001] The invention relates to the field of liquid chromatography, in particular to an emptying valve and a liquid chromatography. Background technique [0002] In the liquid chromatography system, when the bubbles in the mobile phase enter the chromatography system, it will cause system pressure fluctuations and affect the accuracy of detection. Therefore, it is necessary to quickly discharge the air bubbles in the system from the vent valve at a large flow rate. The working mode of the traditional emptying valve is to set the emptying flow rate through the workstation software or the instrument button operation after opening the emptying valve. After emptying, it is necessary to adjust the delivery pump again through the workstation software or the instrument button to set the delivery pump operating flow rate and close the vent valve. [0003] The inventor found in the research that the existing emptying valve has at least the following disadvantages du...

Claims

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Application Information

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IPC IPC(8): F16K11/04F16K31/04F16K31/50G01N30/02
Inventor 罗阁张振方薛术宋瑶王超王志刚
Owner 山东悟空仪器有限公司
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