Tuning agent sampling device with flow control function

Abstract

The utility model relates to the technical field of tuning agent sampling devices, in particular to a tuning agent sampling device with a flow control function, which comprises an electromagnetic valve, a sample valve seat is fixedly connected to the bottom of the electromagnetic valve, a micro-flow regulating valve for regulating flow is arranged on one side of the sample valve seat, and the sample valve seat is fixedly connected with a vacuum flange. A micro-flow regulating valve sample inlet pipe and a micro-flow regulating valve sample outlet pipe are arranged on the sample valve seat, a compression nut is arranged in the sample valve seat, a capillary tube is connected to the lower end of the compression nut, a connector is arranged at the lower end of the capillary tube, and a reagent bottle used for containing a tuning agent is arranged at the lower end of the connector. The micro-flow regulating valve is added before the sample outlet pipe enters the ion source cavity, and the micro-flow control unit is introduced, so that the flow of the tuning agent is more stable and accurate, the correct mass distribution of the tuning agent is ensured, the flow difference is reduced, the stability of the response intensity of a mass spectrum tuning signal is improved, the structure is simple, and the regulation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of tuning agent sampling devices, and particularly to a tuning agent sampling device with flow control. Background Art

[0002] A mass spectrometer is a precision, efficient, and multi-functional analytical instrument that separates molecules of different molecular weights according to the mass-to-charge ratio (m / z) of ions, determines the molecular weight, and performs component and structure analysis. The mass spectrometer has an ion source, a mass analyzer, and an ion detector as its core. After the molecules are ionized by the ion source, they are further fragmented into multiple fragment ions and neutral particles of smaller mass, enter the mass analyzer, and the separated ions enter the ion detector in sequence, where the ion signals are collected and amplified, and then processed by a computer to draw a mass spectrum.

[0003] During the application process of the mass spectrometer, in order to obtain better data, it is necessary to optimize the parameters of the mass spectrometer using a tuning agent before sample analysis, and this process is called the tuning of the mass spectrometer. During tuning, the voltage of the ion source component is set to obtain the correct peak width, and the mass axis is set to ensure correct mass distribution. A good tuning result is the premise for the stable and efficient operation of the mass spectrometer.

[0004] The tuning agent sampling device is a device that introduces the tuning agent into the ion chamber of the mass spectrometer. The design of the tuning device should ensure the stability of the introduced amount of the tuning agent, improve the ionization efficiency, and ensure no interference with the inlet of the mass spectrometer. The traditional tuning device volatilizes the tuning agent and freely enters the ion source through a solenoid valve, and its flow rate cannot be controlled. The difference in flow rate will affect the stability of the response intensity of the mass spectrometry tuning signal.

[0005] When the tuning agent freely enters the ion source through the solenoid valve and the flow rate cannot be controlled, there is a problem that the difference in flow rate affects the stability of the response intensity of the mass spectrometry tuning signal. In view of this, a tuning agent sampling device with flow control is provided. Summary of the Utility Model

[0006] The main purpose of the utility model is to provide a tuning agent sampling device with flow control to solve the problem that when the tuning agent freely enters the ion source through the solenoid valve and the flow rate cannot be controlled, the difference in flow rate affects the stability of the response intensity of the mass spectrometry tuning signal as proposed in the related art.

[0007] To achieve the above purpose, according to one aspect of the utility model, a tuning agent sampling device with flow control is provided, including a solenoid valve. The bottom of the solenoid valve is fixedly connected to a sample valve seat. A micro flow regulating valve for regulating the flow rate is arranged on one side of the sample valve seat. The sample valve seat is fixedly connected to a vacuum flange.

[0008] Among them, a micro-flow regulating valve sampling tube and a micro-flow regulating valve sample outlet tube are installed on the sample valve seat. A compression nut is arranged inside the sample valve seat. A capillary tube is connected to the lower end of the compression nut. A joint is arranged at the lower end of the capillary tube. A reagent bottle for loading the tuning agent is installed at the lower end of the joint.

[0009] As a preferred technical solution of the present utility model, the vacuum flange and the sample valve seat are connected through a pipeline.

[0010] As a preferred technical solution of the present utility model, the solenoid valve and the micro-flow regulating valve sampling tube are connected through a conduit.

[0011] As a preferred technical solution of the present utility model, the sampling port of the micro-flow regulating valve is fixedly connected to the micro-flow regulating valve sampling tube, and the sample outlet of the micro-flow regulating valve is fixedly connected to the micro-flow regulating valve sample outlet tube.

[0012] As a preferred technical solution of the present utility model, the capillary tube is fixed on the sample valve seat through the compression nut, and the reagent bottle is fixed on the sample valve seat through the joint.

[0013] As a preferred technical solution of the present utility model, the micro-flow regulating valve is fixed on the sample valve seat through the micro-flow regulating valve sampling tube and the micro-flow regulating valve sample outlet tube.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] In the tuning agent sampling device with flow control, by adding a micro-flow regulating valve before the sample outlet tube enters the ion source cavity and introducing a micro-flow control unit, the flow rate of the tuning agent is made more stable and accurate, ensuring the correct mass distribution of the tuning agent, reducing the flow rate difference, improving the stability of the response intensity of the mass spectrometry tuning signal, with a simple structure and convenient adjustment. Description of the Drawings

[0016] Figure 1 It is a front view schematic diagram of the tuning agent sampling device with flow control in the preferred embodiment of the present utility model;

[0017] Figure 2 It is a sectional view schematic diagram of the tuning agent sampling device with flow control in the preferred embodiment of the present utility model.

[0018] Illustration:

[0019] 1. Solenoid valve;

[0020] 2. Micro-flow regulating valve sampling tube;

[0021] 3. Micro-flow regulating valve sample outlet tube;

[0022] 4. Microflow regulating valve;

[0023] 5. Vacuum flange;

[0024] 6. Compression nut;

[0025] 7. Capillary tube;

[0026] 8. Sample valve seat;

[0027] 9. Connector;

[0028] 10. Reagent bottle. Detailed implementation manners

[0029] To further elaborate on the technical means and effects adopted by the present utility model to achieve the intended utility model purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features and their effects of the present utility model as follows.

[0030] Please refer to Figure 1 - Figure 2 As shown in the figure, the purpose of this embodiment is to provide a tuning agent sampling device with flow control, including a solenoid valve 1. The bottom of the solenoid valve 1 is fixedly connected to a sample valve seat 8. A microflow regulating valve 4 for regulating the flow rate is installed on one side of the sample valve seat 8. The sample valve seat 8 is fixedly connected to a vacuum flange 5, and the vacuum flange 5 and the sample valve seat 8 are connected through a pipeline.

[0031] A microflow regulating valve sampling inlet pipe 2 and a microflow regulating valve sampling outlet pipe 3 are installed on the sample valve seat 8. The microflow regulating valve 4 is fixed on the sample valve seat 8 through the microflow regulating valve sampling inlet pipe 2 and the microflow regulating valve sampling outlet pipe 3. And symmetric screws are provided on the sample valve seat 8. The sampling inlet of the microflow regulating valve 4 is fixedly connected to the microflow regulating valve sampling inlet pipe 2, and the sampling outlet of the microflow regulating valve 4 is fixedly connected to the microflow regulating valve sampling outlet pipe 3. The other ends of the microflow regulating valve sampling inlet pipe 2 and the microflow regulating valve sampling outlet pipe 3 are connected to the sample valve seat 8.

[0032] The solenoid valve 1 and the microflow regulating valve sampling inlet pipe 2 are connected through a conduit. The tuning agent enters the microflow regulating valve sampling inlet pipe 2 from the solenoid valve 1 through the conduit. A compression nut 6 is arranged in the sample valve seat 8. A capillary tube 7 is connected to the lower end of the compression nut 6. A connector 9 is arranged at the lower end of the capillary tube 7. A reagent bottle 10 for containing the tuning agent is installed at the lower end of the connector 9. The capillary tube 7 is fixed on the sample valve seat 8 through the compression nut 6, and the reagent bottle 10 is fixed on the sample valve seat 8 through the connector 9.

[0033] When the utility model is specifically used, first, the tuning agent is filled in the reagent bottle 10, and each part is fixedly connected to form a tuning agent sampling device. Then, the electromagnetic valve 1 is opened. Under the action of the negative pressure in the mass spectrometry vacuum chamber, the gas volatilized from the tuning agent enters the mass spectrometry ion source through the capillary 7, the electromagnetic valve 1, the micro-flow regulating valve sampling tube 2, the micro-flow regulating valve 4, the micro-flow regulating valve sampling tube 3, the sample valve seat 8, and the vacuum flange 5, thereby realizing the tuning function.

[0034] The above is only the preferred embodiment of the utility model, and it does not impose any form of limitation on the utility model. Although the utility model has been disclosed above with the preferred embodiment, it is not intended to limit the utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the utility model. However, as long as it does not depart from the content of the technical solution of the utility model, any brief modification, equivalent change, and modification made to the above embodiment according to the technical essence of the utility model still fall within the scope of the technical solution of the utility model.

Claims

1. A tuning agent injection device with flow control, including a solenoid valve (1), characterized in that, The bottom of the solenoid valve (1) is fixedly connected to a sample valve seat (8). A micro flow regulating valve (4) for regulating the flow rate is installed on one side of the sample valve seat (8). The sample valve seat (8) is fixedly connected to a vacuum flange (5). Among them, a micro flow regulating valve sampling tube (2) and a micro flow regulating valve sample outlet tube (3) are installed on the sample valve seat (8). A compression nut (6) is arranged inside the sample valve seat (8). A capillary tube (7) is connected to the lower end of the compression nut (6). A joint (9) is arranged at the lower end of the capillary tube (7). A reagent bottle (10) for loading tuning agent is installed at the lower end of the joint (9).

2. The tuning agent injection device with flow control according to claim 1, wherein, The vacuum flange (5) and the sample valve seat (8) are connected through a pipeline.

3. The tuning agent injection device with flow control according to claim 1, characterized in that, The solenoid valve (1) and the micro flow regulating valve sampling tube (2) are connected through a conduit.

4. The tuning agent injection device with flow control according to claim 1, wherein, The sampling port of the micro flow regulating valve (4) is fixedly connected to the micro flow regulating valve sampling tube (2), and the sample outlet port of the micro flow regulating valve (4) is fixedly connected to the micro flow regulating valve sample outlet tube (3).

5. The tuning agent injection device with flow control according to claim 1, characterized in that, The capillary tube (7) is fixed on the sample valve seat (8) through the compression nut (6), and the reagent bottle (10) is fixed on the sample valve seat (8) through the joint (9).

6. The tuning agent injection device with flow control according to claim 4, characterized in that, The micro flow regulating valve (4) is fixed on the sample valve seat (8) through the micro flow regulating valve sampling tube (2) and the micro flow regulating valve sample outlet tube (3).

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