High-precision beryllium window device for protecting detector of fluorescence analyzer

Abstract

The utility model discloses a beryllium window device for protecting a detector of a fluorescence analyzer with high precision. The vacuum pressure gauge is arranged at a first port of the bottom bracket; one end of the flange is connected with the second port of the bottom bracket, and the other end of the flange is connected with the cavity of the analyzer detector; one end of the electromagnetic valve is connected with a third port of the five-way valve, and the other end of the electromagnetic valve is connected with a three-way valve; one end of the air exhaust proportional valve is connected with a fourth port of the five-way joint, and the other end of the air exhaust proportional valve is connected to the three-way joint through a hose; the rest end of the tee joint is connected with the vacuum pump; the deflation proportional valve is connected with a fifth port of the five-way valve; the air exhaust caliber controlled by the electromagnetic valve is larger than the air exhaust caliber controlled by the air exhaust proportional valve and the air exhaust caliber controlled by the air exhaust proportional valve.

Description

TECHNICAL FIELD

[0001] The utility model relates to a high-precision protection fluorescence analysis appearance detector beryllium window device. BACKGROUND

[0002] The measurement and analysis of samples in the fluorescence analysis appearance industry sometimes need to be measured under vacuum environment, but because the detector beryllium window installed in the cavity is relatively thin, there is a requirement for the speed of vacuumizing. If the speed of vacuumizing is too fast, the beryllium window may be broken by the particles in the air. The current processing mode and defects are mainly as follows:

[0003] 1. If the air in the cavity is not controlled when vacuumizing and directly uses the fixed dead vacuum pipeline caliber to exhaust, the important component detector beryllium window cannot be guaranteed not to be damaged by the impact of gas and the impact of particles contained in the air;

[0004] 2. If the fixed small caliber vacuum pipeline is selected to vacuumize, although the detector beryllium window can be guaranteed not to be damaged, after the cavity vacuum degree reaches a certain degree, a bottleneck point will be reached, and the required vacuum degree cannot be reached. Secondly, if the fixed small caliber vacuum pipeline wants to improve the vacuum degree after the cavity vacuum degree reaches a certain degree, it needs a very long time to reach, which will cause the lengthening of the measurement time and affect the use experience of the instrument. CONTENT OF THE UTILITY MODEL

[0005] The application provides a high-precision protection fluorescence analysis appearance detector beryllium window device, which aims to solve the problem that the existing fluorescence analysis appearance has poor speed control and causes the beryllium window to be broken.

[0006] In order to achieve the above technical purpose, the application adopts the following technical scheme:

[0007] A high-precision protection fluorescence analysis appearance detector beryllium window device, comprising: a five-way joint; a vacuum pressure gauge arranged at a first port of the five-way joint; a flange, one end of which is connected to a second port of the five-way joint, and the other end of which is connected to a cavity of an analysis appearance detector; an electromagnetic valve, one end of which is connected to a third port of the five-way joint, and the other end of which is connected to a three-way joint; an air exhaust proportional valve, one end of which is connected to a fourth port of the five-way joint, and the other end of which is connected to the three-way joint through a hose; the three-way joint, one end of which is connected to a vacuum pump; and an air release proportional valve, which is connected to a fifth port of the five-way joint; wherein the air exhaust caliber controlled by the electromagnetic valve is larger than the air exhaust caliber controlled by the air exhaust proportional valve and the air release proportional valve.

[0008] Preferably, the inlet end of the air release proportional valve is connected to a first filter.

[0009] Preferably, a second filter is connected between the three-way joint and the vacuum pump.

[0010] By adopting the technical scheme, the high-precision protective fluorescence analyzer detector beryllium window device of the utility model realizes the switching of different diameters in the vacuumizing and air releasing process through the cooperation of the five-way, the electromagnetic valve, the air extraction proportional valve and the air releasing proportional valve, can improve the vacuumizing speed under the premise of ensuring the vacuum environment of the cavity and ensure that the detector beryllium window is not damaged. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structural schematic view of an embodiment of the utility model. DETAILED DESCRIPTION

[0012] The technical scheme of the utility model will be further specifically explained below by combining with the drawings.

[0013] Referring to Figure 1 The high-precision protective fluorescence analyzer detector beryllium window device of the utility model comprises the following structures: a KF16 flange 1, a G1 / 4-G3 / 8 right-angle adapter 2, a first filter 3, a G3 / 8 to G1 / 8 straight-through adapter 4, an air releasing proportional valve 5, a G1 / 8 wire pair adapter 6, a lengthened KF16 flange 7, a G1 / 4 to G1 / 4 right-angle adapter 8, an air extraction proportional valve 9, a G1 / 4-pyramid (10mm) right-angle adapter 10, a hose 11, a five-way 12, a G1 / 8 wire pair adapter 13, a vacuum pressure gauge 14, a G1 / 4-pyramid (10mm) straight-through adapter 15, a three-way 16, an electromagnetic valve 17, a G1 / 4 wire pair adapter 18 and a filter 19.

[0014] The working connection process is as follows:

[0015] The five-way 12, the G1 / 8 wire pair adapter 13, the vacuum pressure gauge 14, the electromagnetic valve 17 and the G1 / 4 wire pair adapter 18 are assembled in the position relationship as shown in the figure. Figure 1 The first filter 3, the G3 / 8 to G1 / 8 straight-through adapter 4, the air releasing proportional valve 5 and the G1 / 8 wire pair adapter 6 are assembled in the position relationship as shown in the figure. Figure 1After assembling as shown, install the whole assembly on the five-way valve 1. Then, assemble the G1 / 4 to G1 / 4 right-angle adapter 8 and the exhaust proportional valve 9 into a subassembly according to the positional relationship shown in the figure, and then install the whole assembly on the five-way valve 12. Then, assemble the KF16 flange 1, the G1 / 4-G3 / 8 right-angle adapter 2, the second filter 19, the G1 / 4-pagoda (10mm) straight-through adapter 15, and the tee 16 into a subassembly according to the positional relationship shown in the figure, and then install the whole assembly on the five-way valve 12. Then, assemble the extended KF16 flange 7, the G1 / 4-pagoda (10mm) right-angle adapter 10, and the hose 11 according to the positional relationship shown in the figure. Finally, connect the KF16 flange 1 to the vacuum pump via a hose, and connect the extended KF16 flange 7 to the analyzer detector via a hose. At this point, the system is assembled.

[0016] Workflow:

[0017] During vacuuming: When the two proportional valves and one solenoid valve are not energized, they are all in the normally closed state. First, the vacuum proportional valve 9 will be energized at the beginning, and the aperture of the valve port inside the proportional valve 9 will be adjusted by controlling the current. When the digital display value of the vacuum pressure gauge 14 reaches the set value, it means that the gas that can flow in the cavity has become thinner. At this time, the flow rate of the gas in the vacuum cavity will not damage the beryllium window of the detector by replacing the valve with a larger diameter. At this time, the solenoid valve 17 is energized and the vacuum proportional valve 9 is de-energized. At this time, the valve port of the solenoid valve 17 is opened, and the remaining air in the analyzer detector cavity passes through this valve. When the vacuum pressure gauge 14 displays 101.3Kpa, it means that the cavity is now in a relative vacuum environment and the vacuuming action is completed.

[0018] During deflation: After measuring the sample, de-energize the solenoid valve 17, turn off the vacuum pump, and energize the deflation proportional valve 5. By controlling the current, the aperture of the valve port inside the deflation proportional valve 5 is adjusted to control the flow rate of the outside air entering the cavity. This ensures that the gas entering the cavity will not damage the detector beryllium window. When the number on the vacuum pressure gauge 14 becomes 0, it indicates that the deflation action is completed.

[0019] The utility model is provided with two air passages of different diameters, which can be adjusted according to actual conditions. Compared with the existing fixed diameters, the advantages are:

[0020] This new device precisely controls the gas flow rate while ensuring the detector's beryllium window remains intact. It adjusts the gas flow rate in real time based on the vacuum level within the chamber, protecting critical components during evacuation. It also optimizes the time required for the chamber to reach vacuum. This extends the detector's lifespan, significantly saving customers significant maintenance costs and significantly improving instrument efficiency and measurement accuracy.

[0021] The above-described embodiments are only used for illustrating the present application and not used for limiting the scope of the present application. Any equivalent change and modification of the present application made by those skilled in the art shall belong to the scope of the claims of the present application.

Claims

1. A high-precision protection beryllium window device for a fluorescence analyzer detector, characterized in that: include: Five-way; A vacuum pressure gauge, which is provided at the first port of the five-way valve; a flange, one end of which is connected to the second port of the five-way valve and the other end of which is connected to the cavity of the analyzer detector; a solenoid valve, one end of which is connected to the third port of the five-way valve, and the other end of the solenoid valve is connected to a three-way valve; an exhaust proportional valve, one end of which is connected to the fourth port of the five-way valve, and the other end of which is connected to the three-way valve via a hose; The remaining end of the tee is connected to the vacuum pump; a deflation proportional valve connected to the fifth port of the five-way valve; The air extraction caliber controlled by the solenoid valve is larger than the air extraction calibers controlled by the air extraction proportional valve and the air release proportional valve.

2. The high-precision protection fluorescence analyzer detector beryllium window device according to claim 1, characterized in that: The inlet end of the air release proportional valve is connected to a first filter.

3. The high-precision protection fluorescence analyzer detector beryllium window device according to claim 1 or 2, characterized in that: A second filter is connected between the tee and the vacuum pump.

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