Powder sample preparation device of glow discharge mass spectrometer

Abstract

The utility model relates to the field of metal sample processing, in particular to a powder sample preparation device of a glow discharge mass spectrometer. The device comprises a device base, an oscillating mechanism and a pressing pot. Firstly, a powdery sample is arranged on a screen of an oscillating mechanism, powder is evenly laid on the lower surface of a pressing pot through the oscillating mechanism, then a high-purity indium rod is placed at the initial position of a rotating wheel, an upper pressing cover is fastened, a rotating arm is rotated, the rotating arm stops after rotating for a circle, and the process of pressing the powder on the surface of the indium rod is completed. The to-be-detected powder prepared by the device is uniformly distributed on the indium rod and is firmly combined with the matrix, so that the precision and the stability of detection data are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of metal sample preparation, and specifically relates to a powder sample preparation device for glow discharge mass spectrometer. BACKGROUND

[0002] In recent years, the use of glow discharge mass spectrometer to detect and analyze the purity of high-purity metal and alloy is becoming a trend. The glow discharge mass spectrometer can detect and analyze trace and ultra-trace elements of solid samples. However, solid powder samples need to be fixed on the corresponding carrier for detection. Usually, indium sheets are used as carriers, and the powder is pressed on the surface of the indium sheet to prepare the sample. However, the pressed sample may have problems such as local uneven distribution and poor bonding with the matrix. When the powder sample is unevenly distributed on the indium sheet matrix, it will cause the detection data to fluctuate and have poor repeatability. When the measured powder has poor bonding with the matrix, it may enter the device gas path and damage the device.

[0003] Therefore, the present application designs a powder sample preparation device for glow discharge mass spectrometer, which can tightly bond with the measured powder and uniformly distribute on the carrier, to meet the needs of sample preparation during detection. SUMMARY

[0004] To solve the problems in the prior art, the present application provides a powder sample preparation device for glow discharge mass spectrometer, which can ensure that the measured powder is tightly bonded with the carrier and uniformly distributed on the carrier. The technical scheme of the present application is as follows:

[0005] A powder sample preparation device for glow discharge mass spectrometer, the device includes a device base, a compression pot, and an oscillation mechanism. The compression pot includes a compression cover and a compression pot body, which are fixed by a stopper and a fastening bolt. The compression pot body is fixed on the device base. The oscillation mechanism includes a screen and an oscillator. The screen is placed above the oscillator and can be replaced. The oscillator is arranged in the device base. The device base includes a control panel and a base. The control panel is fixed on the upper surface of the base.

[0006] Further, the preferred embodiment of the powder sample preparation device of the glow discharge mass spectrometer is that the pressing cover comprises a limiting middle column, a pressing upper cover, a hard rubber upper contact surface, a rotating arm, an upper through hole, an upper plug column, an upper through hole limiter and an upper fastening screw; the pressing pot body comprises a pot body, a hard rubber lower contact surface, a limiting boss, a lower through hole, a lower plug column, a lower through hole limiter and a lower fastening screw; the hard rubber upper contact surface is fixed to the inner surface of the pressing upper cover, the limiting middle column is located at the center of the pressing upper cover and is fixed to the pressing upper cover and extends downward to cooperate with the limiting boss and extends upward to be fixed to the rotating arm; the upper through hole penetrates through the pressing upper cover, the upper plug column is placed in the upper through hole, the upper through hole limiter is arranged on the upper surface of the pressing upper cover and is fixed to the upper through hole limiter through the upper fastening screw; the pot body is fixed to the base, and the hard rubber lower contact surface is fixed to the lower part of the inner surface of the pot body; the limiting boss is located at the center of the inner part of the pot body, the lower through hole penetrates through the pot body and the base, the lower plug column is placed in the lower through hole, and the lower through hole limiter is arranged on the bottom of the base and is fixed to the lower through hole limiter through the lower fastening screw.

[0007] Further, the preferred embodiment of the powder sample preparation device of the glow discharge mass spectrometer is that the hard rubber upper contact surface, the hard rubber lower contact surface and the limiting boss are detachable.

[0008] The use method of the powder sample preparation device of the glow discharge mass spectrometer is as follows.

[0009] Firstly, the screen is adjusted to a proper position, the powder sample is uniformly placed on the screen, the oscillation effect is controlled through the control panel, and the oscillation is stopped when the powder of a proper mesh number is uniformly spread on the hard rubber lower contact surface of the pressing pot.

[0010] When different powder samples are replaced, the hard rubber upper and lower contact surfaces need to be replaced, the upper and lower plug column limiters are opened, the upper and lower plug columns are taken out, the hard rubber upper and lower contact surfaces are ejected from the upper and lower through holes, the upper and lower plug columns are inserted into the upper and lower through holes after replacement, and the upper and lower plug column limiters are buckled.

[0011] The powder sample preparation device of the glow discharge mass spectrometer has the advantages and beneficial effects that:

[0012] 1. The measured powder is combined with the carrier closely and uniformly, and the device is small in size and flexible.

[0013] 2. The limiting rotating pressing mode is adopted to ensure that the measured powder is combined with the carrier closely and the size of the indium rod is stable.

[0014] 3, The utility model discloses simple and convenient operation has no security risk. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is device schematic drawing;

[0016] Figure 2 It is device plan view;

[0017] Figure 3 It is device elevation;

[0018] Figure 4 It is device left view;

[0019] Figure 5 It is roll pressure schematic drawing;

[0020] In the drawing, 100 is a pressing pot, 110 is a pressing cover, 111 is an upper pressing cover, 112 is a limiting middle column, 113 is a rotating arm, 114 is an upper through hole, 115 is an upper plug column, 116 is an upper through hole limiter, 117 is an upper fastening screw, 118 is a hard rubber upper contact surface, 120 is a pressing pot body, 121 is a pot body, 122 is a limiting boss, 123 is a lower through hole, 124 is a lower plug column, 125 is a lower through hole limiter, 126 is a lower fastening screw, 127 is a hard rubber lower contact surface, 200 is a device base, 201 is a base, 202 is a control panel,

[0021] 300 is an oscillation mechanism, and 301 is an oscillator. DETAILED DESCRIPTION

[0022] The specific embodiments of the utility model will be further explained in detail in combination with the drawings and examples of the specification. Example 1

[0023] As Figures 1-4As shown in the figure, this embodiment discloses a powder sample preparation device for a glow discharge mass spectrometer. The device includes a base 200, a pressure vessel 100, and an oscillation mechanism 300. The oscillation mechanism 300 includes an oscillator 301 and a sieve. The sieve is placed above the oscillator 301 and is replaceable. The oscillator 301 is disposed in the base 200. The base 200 includes a control panel 202 and a base 201. The control panel 202 is fixed to the upper surface of the base 201. The pressure vessel 100 includes a pressure cover 110 and a pressure vessel body 110. 20. The clamping cover includes a limiting central column 112, a clamping upper cover 111, a hard rubber upper contact surface 118, a rotating arm 113, an upper through hole 114, an upper plug 115, an upper through hole limiter 116, and an upper fastening screw 117; the clamping pot body 120 includes a pot body 121, a hard rubber lower contact surface 127, a limiting boss 122, a lower through hole 123, a lower plug 124, a lower through hole limiter 125, and a lower fastening screw 126; the hard rubber upper contact surface 118 is fixed to the inner surface of the clamping upper cover 111 and is detachable. The limiting column 112 is located at the center of the pressing cover 111 and fixed on the pressing cover 111, extending downward to cooperate with the limiting boss 122 and upward to be fixed with the rotating arm 113; the upper through hole 114 passes through the pressing cover 11, the upper plug 115 is placed in the upper through hole 114, and the upper through hole limiter 116 is set on the upper surface of the pressing cover 111 and fixed by the upper fastening screw 117; the pot body 12 1. Fixed to the base 201, the hard rubber lower contact surface 127 is fixed to the lower part of the inner surface of the pot body 121 and is detachable; the limiting boss 122 is located at the center inside the pot body 121 and is detachable; the lower through hole 123 passes through the pot body 121 and the base 201; the lower plug 124 is placed in the lower through hole 123; the lower through hole limiter 125 is set at the bottom of the base 201 and is fixed by the lower fastening screw 126.

[0024] like Figure 5 The diagram shows a simplified operation process. The indium rod is placed in the pressure pot, and the rotating arm of the device is rotated clockwise to complete the sample rolling process.

Claims

1. A powder sample preparation device for glow discharge mass spectrometry, characterized in that, The device includes a device base, a pressure pot, and a vibration mechanism; wherein the pressure pot includes a pressure cover and a pressure pot body, the pressure cover and the pressure pot body are fixed by a limiter and fastening bolts, the pressure pot body is fixed on the device base, the vibration mechanism includes a screen and a vibrator, the screen is placed above the vibrator and is replaceable, the vibrator is set in the device base, the device base includes a control panel and a base, the control panel is fixed on the upper surface of the base.

2. The powder sample preparation device for glow discharge mass spectrometry according to claim 1, characterized in that, The clamping cover includes a limiting central post, a clamping upper cover, a hard rubber upper contact surface, a rotating arm, an upper through hole, an upper plug, an upper through hole limiter, and an upper fastening screw; the clamping pot body includes a pot body, a hard rubber lower contact surface, a limiting boss, a lower through hole, a lower plug, a lower through hole limiter, and a lower fastening screw; the hard rubber upper contact surface is fixed to the inner surface of the clamping upper cover, the limiting central post is located at the center of the clamping upper cover and fixed to the clamping upper cover, and extends downward to cooperate with the limiting boss, and extends upward to cooperate with the rotating arm. The arm is fixed; the upper through hole passes through and presses the upper cover, the upper plug is placed in the upper through hole, and the upper through hole limiter is set on the upper surface of the press upper cover and fixed by the upper fastening screw; the pot body is fixed on the base, and the hard rubber lower contact surface is fixed on the lower part of the inner surface of the pot body; the limiting boss is located at the center of the pot body, the lower through hole passes through the pot body and the base, the lower plug is placed in the lower through hole, and the lower through hole limiter is set at the bottom of the base and fixed by the lower fastening screw.

3. The powder sample preparation device for glow discharge mass spectrometry according to claim 2, characterized in that, The upper contact surface of the hard rubber, the lower contact surface of the hard rubber, and the limiting boss are all removable.

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