Handheld X-ray fluorescence spectrometer

Abstract

The utility model provides a handheld X-ray fluorescence spectrophotometer. The handheld X-ray fluorescence spectrophotometer comprises a machine body, a handle located below the machine body and a machine head located at the front end of the machine body. The machine head comprises an outer shell, a fixing shell and a protective film, the outer shell is sleeved with the fixing shell, and the protective film wraps the front end of the outer shell and is clamped between the outer shell and the fixing shell. The shell is provided with a front end face and a plurality of outer side faces, the front end face is provided with a detection window, the fixed shell is provided with a front opening, and the protective film completely wraps the front end face and penetrates out of the detection window through the front opening. According to the handheld X-ray fluorescence spectrometer, the front end of the machine head is integrally coated with the protective film through the fixing shell, the waterproofness of the machine head is improved, the machine head can extend into large-area liquid for direct detection, operation is faster, and the fixing shell can be conveniently detached to replace the protective film.

Description

TECHNICAL FIELD

[0001] The present application relates to a handheld X-ray fluorescence spectrometer. BACKGROUND

[0002] A handheld X-ray fluorescence spectrometer (XRF spectrometer) is a handheld analyzer based on X-ray fluorescence analysis technology. The atomic nucleus of the constituent element of the measured substance emits X-rays with the characteristic of the element after the outer electron of the measured substance is excited and transitions. The energy and intensity of the characteristic rays can be detected to analyze the composition and content of the substance. The X-ray fluorescence spectrometer is designed based on this principle. This type of device has the advantages of short detection time, no damage to the detected object, and simple pretreatment.

[0003] The handheld X-ray fluorescence spectrometer generally includes a body, a handle located below the body, and a head located at the front end of the body. The utility model discloses a head of a handheld X-ray fluorescence spectrometer, which comprises a detection head, a cover shell and an outer frame. The detection head is located inside the cover shell. The outer frame is hinged to the cover shell. An inner frame is embedded in the outer frame. A gasket is embedded in the inner frame. A protective film is installed between the gasket and the inner frame. The detection head irradiates the measured substance through the protective film, and the protective film can prevent the measured substance from contaminating the detection head. The protective film is easily contaminated by contacting the measured substance, so it needs to be replaced frequently. When replacing the protective film, the outer frame is first opened, the inner frame is removed, the gasket is removed from the inner frame, and finally the protective film is removed. The replacement process of the protective film is slightly complex. In addition, when detecting liquid samples, the head of this handheld X-ray fluorescence spectrometer has the risk of liquid leakage at the front end, so it cannot be directly inserted into the measured liquid for detection, but needs to be loaded into a sample cup for testing. The operation process is not convenient enough.

[0004] Therefore, it is necessary to provide an improved handheld X-ray fluorescence spectrometer. CONTENT OF THE UTILITY MODEL

[0005] The present application provides a handheld X-ray fluorescence spectrometer that is easier and faster to operate.

[0006] Specifically, the present application is realized by the following technical scheme: a handheld X-ray fluorescence spectrometer, comprising a body, a handle located below the body, and a head located at the front end of the body. The head comprises an outer shell, a fixed shell, and a protective film. The fixed shell is sleeved outside the outer shell. The protective film is wrapped around the front end of the outer shell and clamped between the outer shell and the fixed shell. The outer shell is provided with a front end face and a plurality of outer side faces. The front end face is provided with a detection window. The fixed shell is provided with a front opening. The protective film completely wraps the front end face and protrudes through the front opening to the detection window.

[0007] Further, the protective film wraps the several outer sides of the shell.

[0008] Further, the machine head is provided with a detection head, and the detection window is provided with a film for sealing the detection head in the machine head.

[0009] Further, the fixed shell is fixed to the shell by a buckle connection.

[0010] Further, the fixed shell is an integrally formed part.

[0011] Further, the rear end of the machine body is provided with a display device.

[0012] Further, the display device is a magnetically fixed mobile phone.

[0013] The handheld X-ray fluorescence spectrometer of the present application wraps the protective film on the front end of the machine head through the fixed shell, improves the waterproofness of the machine head, can directly detect by exploring into a large area of liquid, operates more quickly, and can conveniently replace the protective film by removing the fixed shell.

[0014] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a perspective assembly view of the handheld X-ray fluorescence spectrometer according to an embodiment of the present application;

[0016] Figure 2 is Figure 1 is a partial perspective exploded view of the handheld X-ray fluorescence spectrometer in

[0017] Figure 3 is Figure 2 is a perspective assembly view of the fixed shell and the protective film of the handheld X-ray fluorescence spectrometer in

[0018] Figure 4 is Figure 3 is a perspective exploded view of the fixed shell and the protective film in

[0019] Figure 5 is Figure 4 is another perspective view of the fixed shell in

[0020] EXPLANATION OF REFERENCE NUMERALS:

[0021] Handheld X-ray fluorescence spectrometer 100, machine body 1, handle 2, machine head 3, display device 4, shell 31, front end face 311, outer side 312, detection window 313, buckle hole 314, fixed shell 32, front opening 321, rear opening 322, side wall 323, buckle block 324, protective film 33. Detailed Implementation

[0022] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses, systems, devices, and methods consistent with some aspects of this application.

[0023] refer to Figure 1 As shown, a handheld X-ray fluorescence spectrometer 100 according to one embodiment of this application includes a body 1, a handle 2 located below the body 1, a head 3 located at the front of the body 1, and a display device 4 located at the rear of the body 1. In this embodiment, the display device 4 is a mobile phone that is magnetically fixed. In use, the user holds the handle 2 and aligns the head 3 with the substance to be tested for detection. The display device 4 then displays the elemental types and contents of the substance to be tested.

[0024] refer to Figure 2 As shown, the head unit 3 includes a housing 31, a fixed housing 32, and a protective film 33. The rear end of the housing 31 is connected to the body 1. A probe (not shown) is provided inside the housing 31. The housing 31 has a front end face 311 and several outer sides 312. A detection window 313 is provided on the front end face 311. A film (not shown) is fixed at the detection window 313. The film (not shown) seals the probe (not shown) inside the housing 31 inside the housing 31 to prevent the probe (not shown) from being contaminated or damaged.

[0025] Combination Figures 3 to 5 As shown, the shape of the fixing shell 32 is basically the same as that of the outer shell 31. It fits over the outer shell 31 from front to back. The fixing shell 32 is cylindrical with openings at both the front and rear ends, and is smaller at the front and larger at the rear. The fixing shell 32 is a one-piece molded part, which can be injection molded from plastic material or drawn from metal material. The fixing shell 32 includes a front opening 321, a rear opening 322, and several side walls 323 arranged along its circumference. The side walls 323 cover several outer surfaces 312 of the outer shell 31. The size of the front opening 321 is slightly larger than the size of the front end face 311 of the outer shell 31, so that the detection window 313 can be fully exposed.

[0026] Multiple outer surfaces 312 of the outer shell 31 are provided with snap holes 314, and the inner surface of the corresponding side wall 323 of the fixed shell 32 is provided with snap blocks 324. The snap blocks 324 are snapped into the snap holes 314, so that the fixed shell 32 can be fixed to the outside of the outer shell 31.

[0027] The protective film 33 is clamped between the shell 31 and the fixed shell 32, the protective film 33 covers the front end surface 311 of the shell 31 and several outer side surfaces 312 thereof, due to the fixation and protection of the fixed shell 32, only the front side surface 331 of the protective film 33 is exposed from the front opening 321 of the fixed shell 32 and transmits the detection window 313 of the shell 31. The material of the protective film 33 can be the same as that of the film (not shown), which is an ultra-thin film with a thickness of about several microns, and does not affect the detection result.

[0028] The front end of the handpiece 3 forms good waterproofness by means of the covering of the protective film 33, so the handheld X-ray fluorescence spectrometer 100 can directly probe the front end of the handpiece 3 into a large area of liquid to be detected, and the problem of liquid penetration does not occur, and the film (not shown) at the detection window 313 does not directly contact the liquid to be detected. After the detection is completed, the fixed shell 32 is removed, the protective film 33 is replaced, and the fixed shell 32 is reinstalled to detect other substances again. The handheld X-ray fluorescence spectrometer 100 of the present application can realize rapid detection of a large area of liquid, and can conveniently replace the protective film, thereby improving the operation convenience.

[0029] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hand-held X-ray fluorescence spectrometer comprising a body, a handle located below the body, and a head located at a front end of the body, characterized in that: The machine head comprises a shell, a fixed shell and a protective film, the fixed shell is sleeved outside the shell, the protective film is wrapped around the front end of the shell and is clamped between the shell and the fixed shell, the shell is provided with a front end face and a plurality of outer side faces, the front end face is provided with a detection window, the fixed shell is provided with a front opening, and the protective film completely wraps the front end face and transmits the detection window through the front opening.

2. The handheld X-ray fluorescence spectrometer of claim 1, wherein: The protective film wraps a plurality of the outer side faces of the shell.

3. The handheld X-ray fluorescence spectrometer of claim 2, wherein: A detection head is arranged in the machine head, and a film is arranged at the detection window to seal the detection head in the machine head.

4. The handheld X-ray fluorescence spectrometer of claim 3, wherein: The fixed shell is fixed to the shell by buckle connection.

5. The handheld X-ray fluorescence spectrometer of claim 4, wherein: The fixed shell is an integral forming part.

6. The handheld X-ray fluorescence spectrometer of claim 5, wherein: The rear end of the machine body is provided with a display device.

7. The handheld X-ray fluorescence spectrometer of claim 6, wherein: The display device is a mobile phone fixed by magnetic attraction.

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