Efficient cleaning device for mass spectrum taper hole

Abstract

The utility model relates to a mass spectrum taper hole automatic cleaning device in a mass spectrometer maintenance technology, and belongs to the field of experimental instrument maintenance. The utility model discloses an efficient cleaning device for mass spectrum taper holes. The efficient cleaning device comprises a cleaning tank, a cleaning tank top cover, an ultrasonic assembly and a taper hole cleaning assembly. The ultrasonic assembly is composed of a power source, an ultrasonic generator and an ultrasonic transducer and can generate ultrasonic waves in the cleaning process to achieve effective decontamination and cleaning. And the top of a supporting rod in the taper hole cleaning assembly adopts a taper design so as to be accurately butted with the position of the mass spectrum taper hole. According to the mass spectrum taper hole cleaning system, efficient cleaning of mass spectrum taper holes is achieved through an automatic process, especially in a preferable implementation mode, the automatic level of the cleaning system is greatly improved by setting an automatic liquid preparation function, and the labor requirement can be greatly reduced. Compared with a traditional manual cleaning mode, the cleaning device has the advantages that time can be remarkably saved, and cleaning is more thorough. And the reliability of experimental results and the long-acting stable operation of the mass spectrometer are ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of experimental instrument maintenance, in particular to the field of daily maintenance technology of mass spectrometer, and more particularly to a high-efficiency cleaner for mass spectrometry cone hole. BACKGROUND

[0002] The mass spectrometry cone hole is a core component for screening and filtering ions in the mass spectrometer, and its design is usually a metal structure with a conical inner hole. Common mass spectrometry cone holes include four-stage rod cone holes, ion reflector cone holes, and time-of-flight mass spectrometry cone holes.

[0003] These cone holes utilize the direction and intensity of the electric field to guide the motion trajectory of ions, thereby achieving ion separation and transmission. Through such a working mechanism, the mass spectrometry cone hole can effectively eliminate interference, thereby improving the detection sensitivity and accuracy of the mass spectrometer.

[0004] In long-term use, the surface of the mass spectrometry cone hole will be affected by the attachment of ion deposits and other impurities, thus requiring regular cleaning. Current cleaning methods mainly rely on manual operation, which typically includes using a cotton swab to dip diluted formic acid to gently wipe the surface of the mass spectrometry cone hole, then using a formic acid-water-methanol mixed solution, an aqueous solution, and a methanol solution for ultrasonic cleaning. After the cleaning solution evaporates, the dried mass spectrometry cone hole is reinstalled into the mass spectrometer.

[0005] However, due to the small size of the mass spectrometry cone hole, the cleaning operation needs to be performed by holding the cone hole with tweezers, which not only requires a high labor intensity, but also the cleaning effect often depends on the stability and precision of manual operation. SUMMARY

[0006] The present application aims to solve the problem of low automation and high dependence on manual operation in existing mass spectrometry cone hole cleaning methods, and provides a high-efficiency cleaner for mass spectrometry cone hole, which is efficient and precise. It includes a cleaning tank, a cleaning tank top cover, an ultrasonic assembly, and a cone hole cleaning assembly. The ultrasonic assembly includes a power supply, an ultrasonic generator, and an ultrasonic transducer, which is fixedly installed on the bottom plate of the cleaning tank and connected to the power supply through the ultrasonic generator to realize the conduction of ultrasonic vibration. The cone hole cleaning assembly includes a support rod, a base, a cleaning brush, and a cleaning brush driving motor. The base is fixedly installed on the bottom plate of the cleaning tank, the upper end of the support rod is conical and matches the inner structure of the mass spectrometry cone hole for accurate placement of the cone hole, and the cleaning brush is fixed to the cleaning tank top cover and includes a brush rod and bristles fixed to the end of the brush rod. The brush rod is divided into an in-tank brush rod part and an out-of-tank brush rod part by the cleaning tank top cover, and the end of the out-of-tank brush rod is driven by the cleaning brush driving motor.

[0007] Specifically, the base is fixed to the cleaning tank bottom plate, and the bottom plate is connected with the ultrasonic transducer. After the ultrasonic generator is connected to the power supply, a high-frequency electric signal is generated through an electric oscillation circuit, and the ultrasonic transducer converts the electric signal into mechanical vibration, causing the bottom plate to vibrate and generate a large number of tiny bubbles. When these bubbles burst in the cleaning liquid, they can effectively remove the dirt on the surface of the cone hole, thereby significantly improving the cleaning efficiency and effect. The support rod is stably installed on the base, and the top end of the support rod is designed as a conical structure, which accurately matches the inner shape of the mass spectrometry cone hole, facilitating the stable placement and positioning of the mass spectrometry cone hole. The cleaning brush is fixed to the cleaning tank top cover, and the structure thereof includes a brush rod and brush hairs installed at the end. The cleaning tank top cover separates the brush rod into inner and outer parts, and the tail end of the brush rod outside the cleaning tank is connected to the cleaning brush driving motor. The driving motor drives the brush rod to rotate, thereby causing the brush hairs to rotate synchronously in the horizontal direction, ensuring that the inner wall of the mass spectrometry cone hole is fully and uniformly cleaned.

[0008] In the cleaning operation, formic acid can be first added to the cleaning tank, and then replaced with a formic acid-water-methanol mixed solution, an aqueous solution, and a methanol solution in sequence to achieve comprehensive cleaning.

[0009] The preferred technical solution includes that the base and the bottom plate are fixed by bolts, which facilitates installation and disassembly, so that the cleaner is not only easy to maintain, but also can clean other articles; at the same time, the stability and operation precision of the base can be ensured through bolt fixation.

[0010] The number of support rods is six, which are arranged in a circular or matrix manner to ensure that the cleaning brush can fully cover the surface of the mass spectrometry cone hole, and the cleaning is more uniform, thereby optimizing the cleaning effect.

[0011] Further improvements include setting a liquid inlet on the side wall of the cleaning tank for the introduction of liquid medium, and cooperating with the pipeline to conveniently inject the cleaning liquid. Further preferably, when a liquid outlet is arranged on the side wall or the bottom plate, the pipeline can be connected to a waste liquid recovery device to realize rapid discharge of the cleaning liquid.

[0012] The positions of the liquid inlet and the liquid outlet optimize the liquid level and the discharge amount of the cleaning liquid. In addition, a four-way valve is installed at the liquid inlet to connect three liquid inlet pipelines and a main pipeline, and each pipeline is provided with a separate valve to select methanol, formic acid, and water as the cleaning liquid according to the needs, thereby controlling the introduction of different media and realizing multi-step automatic cleaning.

[0013] It should be noted that the position of the liquid inlet determines the maximum liquid level of the cleaning liquid in the cleaning tank, and the liquid outlet determines the remaining residual liquid amount after the liquid is discharged from the cleaning tank. Therefore, generally, the liquid outlet is arranged on the bottom plate, and the liquid inlet is arranged at a position about 5-10 cm away from the top of the cleaning tank.

[0014] Finally, preferably, each liquid inlet pipeline is provided with a flow meter and an electromagnetic valve, and the electromagnetic valve can be automatically opened and closed through program control, so that the liquid flow and the opening state are accurately controlled, the cleaning liquid proportion is accurately adjusted, the liquid is efficiently mixed, and the purpose of improving the automatic cleaning effect is achieved.

[0015] The mass spectrometry cone hole is automatically cleaned, in the preferred technical solution, liquid can be automatically mixed, thereby further improving the automation degree. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A schematic view of a cleaning tank part of the mass spectrometry cone hole cleaner.

[0017] Figure 2 A schematic view of an ultrasonic assembly of the mass spectrometry cone hole cleaner.

[0018] Figure 3 A schematic view of a cleaning tank top cover part of the mass spectrometry cone hole cleaner. DETAILED DESCRIPTION

[0019] In order to better understand the present application, the present application is described in detail below in combination with specific embodiments.

[0020] As Figures 1 to 3 shown, the mass spectrometry cone hole cleaner of the present application as a whole comprises a cleaning tank 1, a cleaning tank top cover 2, an ultrasonic assembly and a cone hole cleaning assembly, so as to realize efficient and automatic cleaning of the mass spectrometry cone hole. The ultrasonic assembly comprises a power supply (not shown in the figure), an ultrasonic generator 3 and an ultrasonic transducer 4, which provides high-frequency vibration for cleaning to produce a "cavitation" effect and realize thorough cleaning. The cone hole cleaning assembly is composed of a support rod 5, a base 6, a cleaning brush 7 and a cleaning brush driving motor 8. Through Figure 1 It can be seen that the base 6 is firmly installed on the bottom plate of the cleaning tank 1. Figure 2 In the base 6, the bottom plate 101 is connected with the ultrasonic transducer 4, so that the ultrasonic vibration is conducted to the cleaning liquid through the bottom plate.

[0021] Particular attention Figure 1 is paid to the fact that the support rod 5 is fixed on the base 6, and the top is designed as a conical structure, which is completely matched with the inner wall of the mass spectrometry cone hole, so as to ensure stable placement. Figure 3 In combination with , the cleaning brush 7 is installed on the cleaning tank top cover 2, and the brush rod 701 is divided into an inner part and an outer part through the top cover. The tail end of the outer brush rod is connected with the cleaning brush driving motor 8, and the brush is controlled to rotate horizontally through the driving motor, so as to ensure omnidirectional cleaning of the inner surface of the cone hole.

[0022] In a preferred embodiment, the base 6 is fixed to the bottom plate 101 by bolts, which is easy to disassemble and maintain. The support rods 5 are arranged in a circle or matrix on the base, and cooperate with the cleaning brush to effectively improve the cleaning effect.

[0023] Further, if Figure 2 As shown, this embodiment provides a liquid inlet 9 on the side wall of the cleaning tank and a liquid drain 10 on the bottom plate. The liquid inlet is connected to a pipeline to enable automatic injection of cleaning liquid, while the liquid drain is used to discharge waste liquid. A four-way valve is provided at the liquid inlet, connecting the three liquid inlet lines and the main line. Each liquid inlet line is equipped with an independent valve for easy control. Each line is also equipped with a flow meter and solenoid valve, namely a formic acid line flow meter 11, a formic acid line solenoid valve 12, a water line flow meter 13, a water line solenoid valve 14, a methanol line flow meter 15, and a methanol line solenoid valve 16, to ensure precise control of the injected liquid ratio.

[0024] During use, the experimenter places the mass spectrometer cone on top of the support rod and closes the cleaning cover. The bristles attached to the cover now cover the surface of the mass spectrometer cone. After starting the cleaning process, the system sequentially activates the formic acid, solenoid valve, flowmeter, and other devices to ensure that the predetermined flow rate of formic acid is injected into the cleaning tank. Subsequently, the cleaning brush drive motor starts, rotating the brush to perform formic acid scrubbing. Once scrubbing is complete, the drain valve 17 opens to discharge the formic acid solution.

[0025] The system then sequentially injects a cleaning solution consisting of formic acid, water, and methanol in a predetermined ratio (e.g., 45:45:10) for optimal cleaning results. The ultrasonic component then activates, creating tiny bubbles in the cleaning solution through ultrasonic "cavitation" that explode on the surface of the tapered hole, removing dirt. After the mixed cleaning solution is cleaned, valve 17 is opened again to drain the waste liquid.

[0026] By turning on the ultrasonic generator, high-frequency vibrations create tiny bubbles in the cleaning fluid. These bubbles, blasted and carried away dirt through the "cavitation" effect, achieve a deep clean of the mass spectrometer cone. The entire process involves multiple steps, including formic acid scrubbing, ultrasonic cleaning with a mixed cleaning fluid, water cleaning, and methanol cleaning. Finally, after removing the top cover, the mass spectrometer cone is exposed to air to dry naturally.

[0027] After the formic acid mixed solution is injected into the cleaning tank and the scrubbing procedure is completed, the further water washing stage begins. First, the water pipeline solenoid valve 14 is opened, and the water pipeline flowmeter 13 starts counting at the same time, and water is injected into the cleaning tank at a preset flow rate. When the preset water volume is reached, the water pipeline solenoid valve is closed to ensure that the cleaning tank is full of water. At this time, the power supply of the ultrasonic generator 3 is started, and the ultrasonic transducer 4 generates high-frequency vibration under the drive of the power supply, forming tiny bubbles in the water through the "cavitation" effect, generating a strong impact force, thereby further deep cleaning the mass spectrometer cone. After cleaning is completed, the valve 17 of the drain port is opened to discharge the water for the next step.

[0028] Next, the methanol line cleaning procedure is initiated. The methanol line solenoid valve 16 opens and the methanol line flow meter 15 begins counting, ensuring accurate control of the methanol flow. When the methanol flow reaches the pre-set value, the methanol line solenoid valve closes and the cleaning cell is now full of methanol. The ultrasonic generator power is again activated, generating ultrasonic waves in the methanol, completing the final cleaning step of the cone via the "cavitation" effect. After the cleaning is complete, the drain valve 17 is again opened, draining the methanol, in preparation for the drying process of the mass spectrometry cone.

[0029] After the cleaning procedure is complete, the cleaning cell top cover 2 is opened, exposing the mass spectrometry cone to the air, allowing it to dry naturally. Once completely dry, the mass spectrometry cone can be reloaded into the instrument, ensuring its good performance and cleanliness.

[0030] The above constitutes the specific embodiment of the present application. For those skilled in the art, appropriate modifications and refinements can be made without deviating from the core technology of the present application, and these changes and adjustments are within the scope of protection of the present application.

Claims

1. A high efficiency cleaner for a mass spectrometry orifice, characterized by, The utility model relates to a mass spectrometer cleaning device, comprising a cleaning tank, a cleaning tank top cover, an ultrasonic assembly and a conical hole cleaning assembly; wherein the ultrasonic assembly comprises a power supply, an ultrasonic generator and an ultrasonic transducer, the ultrasonic transducer is fixedly installed on the bottom plate of the cleaning tank and is connected with the power supply through the ultrasonic generator; the conical hole cleaning assembly comprises a support rod, a base, a cleaning brush and a cleaning brush driving motor, the base is fixedly installed on the bottom plate of the cleaning tank, the upper end of the support rod is conical and matches the inner side structure of the mass spectrometer conical hole, the cleaning brush is fixed on the cleaning tank top cover and comprises a brush rod and bristles fixed on the end of the brush rod, the brush rod is divided into an in-tank brush rod part and an out-tank brush rod part by the cleaning tank top cover, and the out-tank brush rod end is driven by the cleaning brush driving motor.

2. The high efficiency cleaner for mass spectrometry orifice according to claim 1, characterized by, The base is fixed to the bottom plate by bolts.

3. The high efficiency cleaner for mass spectrometry orifice according to claim 1, characterized in that, Six support rods are arranged on the base, and the position of the cleaning brush corresponds to the support rods.

4. The high efficiency cleaner for mass spectrometry orifice according to claim 1, characterized by, The utility model further comprises a liquid inlet, which is arranged on the side wall of the cleaning tank.

5. The high efficiency cleaner for mass spectrometry orifice according to claim 1, characterized in that, The utility model further comprises a liquid outlet, which is arranged on the side wall or the bottom plate of the cleaning tank.

6. The high efficiency cleaner for mass spectrometry orifice according to claim 4, characterized in that, The liquid inlet is connected to a four-way valve, the four-way valve is respectively connected to three liquid inlet pipelines and a main pipeline, and each liquid inlet pipeline is provided with an independent valve.

7. The high efficiency cleaner for mass spectrometry orifice according to claim 6, characterized in that, Flow meters and electromagnetic valves are arranged on the three liquid inlet pipelines.

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