A dust-proof energy dispersive X-ray fluorescence spectrometer

Abstract

The present invention discloses a dust-proof energy dispersive X-ray fluorescence spectrometer, comprising a housing, the interior of which is divided into a test chamber and a sample chamber arranged above and below by a sample partition; a hollow vacuum chamber is provided in the test chamber, the vacuum chamber is connected to the sample partition and is provided with a test window; the sample partition is provided with an escape opening for exposing the test window; a sample chamber is provided in the sample chamber, the top surface of which is provided with a sample cavity, the sample cavity is located directly below the test window, an elastic support assembly is provided inside the cavity, and a sealing assembly is provided at the cavity opening; the sample cavity is connected to a sample delivery mechanism; a mounting port is provided on one side of the vacuum chamber, the mounting port being connected to the interior of the vacuum chamber and the sample chamber via a gas pipeline; the mounting port is connected to a vacuum pipe joint of a vacuum pump via a hollow connecting rod; the air inlet of the vacuum pump is connected to a dustproof assembly; one end of the connecting rod is located in the mounting port and is connected to a dustproof valve. The dust-proof energy dispersive X-ray fluorescence spectrometer has good dustproof effect.

Description

Technical Field

[0001] The present invention relates to the technical field of X-ray fluorescence spectrometers, in particular to a dust-proof energy dispersion X-ray fluorescence spectrometer. Background Art

[0002] At the oil industry's logging site, due to the extremely simple testing conditions and heavy dust, a large amount of dust will enter the conventional testing instrument shortly after it is put into operation, accumulating on the detector window surface, light tube surface, test window and other locations, thus affecting the test results.

[0003] Therefore, it is necessary to design a dust-proof energy dispersive X-ray fluorescence spectrometer to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a dust-proof energy dispersive X-ray fluorescence spectrometer with good dust-proof effect.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A dust-proof energy dispersive X-ray fluorescence spectrometer comprises a housing, the interior of the housing being divided into a test chamber and a sample chamber arranged one above the other by a sample partition; a hollow vacuum chamber is provided in the test chamber, the vacuum chamber is connected to the sample partition and is provided with a test window; the sample partition is provided with an escape opening for exposing the test window;

[0007] The sample chamber is provided with a sample cavity having a sample cavity on its top surface. The sample cavity is located directly below the test window and is provided with an elastic support component for supporting the sample. A sealing component is provided at the cavity opening. The sample cavity is connected to a sample feeding mechanism that drives it to move upward so that the sample supported by the elastic support component and the sealing component are tightly fitted with the sample partition.

[0008] A mounting port is provided on one side of the vacuum chamber, and the mounting port can be connected to the interior of the vacuum chamber and the sample chamber through a gas pipeline; the mounting port is connected to the vacuum pipe joint of the vacuum pump through a hollow connecting rod; the air inlet of the vacuum pump is connected to a dustproof component; one end of the connecting rod is located in the mounting port and is connected to a dustproof valve.

[0009] Furthermore, an annular step hole is provided at the cavity mouth of the sample cavity; the sealing assembly includes a sealing ring arranged on the inner side of the step hole and a sealing retaining ring arranged on the inner side of the sealing ring, the sealing retaining ring is connected to the sample cavity by screws, and the inner bottom surface has an extension portion extending downward along the inner side surface of the sample cavity.

[0010] Furthermore, the elastic support assembly includes a sample ring support ring and a spring that are in upward and downward sliding contact with the inner side surface of the extension portion. The inner bottom surface of the sample cavity and / or the bottom surface of the sample ring support ring are provided with guide columns in the vertical direction, and the spring is sleeved on the guide columns.

[0011] Furthermore, the dustproof component includes a pipe joint connected to the air inlet of the vacuum pump, a speed control valve connected to the pipe joint, and a dust cover connected to the speed control valve, the dust cover is provided with a trumpet-shaped opening, the inner bottom surface of the opening is provided with a through hole connected to the air inlet end of the speed control valve; the outer port of the opening is covered with a filter component.

[0012] Furthermore, the filter assembly includes a partition, dustproof cotton and a cover plate arranged in sequence from the inside to the outside, and the cover plate is locked and connected to the end face of the dust cover through a locking bolt; the partition and the cover plate are both provided with multiple small holes in an array.

[0013] Furthermore, the gas pipeline includes a first channel opened between the vacuum chamber and the sample partition and a second channel opened in the vacuum chamber, the first channel connects the avoidance port and the test window, and the second channel connects the first channel and the installation port.

[0014] Furthermore, the sample delivery mechanism includes a tray placed in the sample chamber and used to carry the sample cavity, a top block that can slide up and down, and a lifting component that drives the top block to slide up and down to lift the tray.

[0015] Furthermore, a detector assembly is provided in the test chamber, the window end of the detector assembly is located in the vacuum chamber, and a block for blocking the detector window is provided in the vacuum chamber; the block is connected to the filter holder located in the vacuum chamber through a connecting piece, and the filter holder is connected to a driving assembly that drives it to move along the filter switching direction.

[0016] Furthermore, the connecting member includes a shielding plate located above the test window and a support plate connecting the shielding plate and the filter holder, and the stopper is connected to the shielding plate.

[0017] The beneficial effects of the present invention are as follows: the dust-proof energy dispersive X-ray fluorescence spectrometer of the present invention performs dust-proof treatment by arranging a dust-proof component at the air inlet of the vacuum pump, performs dust-proof treatment on the detector window and the test window in the vacuum chamber, and performs integrated dust-proof treatment between the vacuum chamber, the sample chamber and the pipeline, thereby realizing control from the source, then specifically to the test window inside the instrument, and finally the connection of the vacuum chamber, the sample chamber and the pipeline, thereby forming an overall dust-proof system, greatly reducing the dust from the large-scale logging site entering the interior of the instrument. The equipment has low manufacturing cost, easy operation and reliable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a dust-proof energy dispersive X-ray fluorescence spectrometer provided by the present invention;

[0019] Figure 2 This is a schematic structural diagram of a dustproof assembly connected to a vacuum pump in a dustproof energy dispersive X-ray fluorescence spectrometer provided by the present invention;

[0020] Figure 3 yes Figure 1 Schematic diagram of the structure of the sample chamber;

[0021] Figure 4 yes Figure 1 Schematic diagram of the structure of the sample chamber and vacuum chamber in use;

[0022] Figure 5 yes Figure 1 Schematic diagram of the structure of the vacuum chamber;

[0023] Figure 6 yes Figure 5 Schematic diagram of the structure of the stopper. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0025] like Figures 1 to 6 As shown, a dust-proof energy dispersive X-ray fluorescence spectrometer comprises a housing 1, the interior of which is divided into a test chamber and a sample chamber arranged above and below by a sample partition 11. The test chamber houses a hollow vacuum chamber 3, a detector assembly 2, and a light pipe assembly. The sample chamber houses a sample chamber 4 with a sample cavity 41 defined in its top surface. The sample chamber 4 is connected to a sample feed mechanism 5 that drives the sample chamber upward.

[0026] Specifically, the vacuum chamber 3 is connected to the sample diaphragm 11 and is provided with a test window 31. The sample diaphragm 11 has a clearance opening for exposing the test window 31. The sample chamber 4 is located directly below the test window 31 and contains an elastic support assembly 42 for holding the sample. A sealing assembly 43 is located at the chamber opening. Driven by the sample delivery mechanism 5, the sample chamber 4 moves upward so that the sample supported by the elastic support assembly 42 and the sealing assembly 43 are tightly attached to the sample diaphragm 11.

[0027] A mounting port 32 is provided on one side of the vacuum chamber 3, which connects the interior of the vacuum chamber 3 and the sample chamber 41 via a gas pipe 6. This mounting port 32 is connected to a vacuum pipe joint 81 of a vacuum pump 8 via a hollow connecting rod 7. One end of the connecting rod 7 is located within the mounting port 32 and is connected to a dust valve 71. Seals 72 are provided at the connection between the connecting rod 7 and the vacuum pipe joint 81, as well as at the connection between the connecting rod 7 and the mounting port 32.

[0028] Furthermore, the gas conduit 6 includes a first channel 61 opened between the vacuum chamber 3 and the sample partition 11 and a second channel 62 opened in the vacuum chamber 3. The first channel 61 connects the avoidance port and the test window 31, and the second channel 62 connects the first channel 61 and the installation port 32.

[0029] The air inlet of the vacuum pump 8 is connected to a dustproof component 9. Figure 2 As shown, the dustproof assembly 9 includes a pipe joint 91 connected to the air inlet of the vacuum pump 8, a speed control valve 92 connected to the pipe joint 91, and a dust cover 93 connected to the speed control valve 92. The dust cover 93 has a trumpet-shaped opening 931, and the inner bottom surface of the opening 931 has a through hole 932 connected to the air inlet of the speed control valve 92. The outer end of the opening 931 is covered and connected with a filter assembly 94. The filter assembly 94 includes a partition 941, dustproof cotton 942, and a cover plate 943, which are arranged in order from the inside to the outside. The cover plate 943 is locked to the end surface of the dustproof cover 93 by a locking bolt 944. The partition 941 and the cover plate 943 are both provided with a plurality of small holes in an array.

[0030] When in use, the speed control valve 92 can effectively control the gas flow rate at the air inlet of the vacuum pump 8, thereby improving the situation where the air flow impact is generated at the air inlet when the vacuum pump 8 is started; the filter component 94 can prevent particulate dust from entering the vacuum pump 8.

[0031] like Figure 3As shown, an annular stepped hole is provided at the cavity opening of the sample cavity 41; the sealing assembly 43 includes a sealing ring 431 arranged on the inner side of the stepped hole and a sealing retaining ring 432 arranged on the inner side of the sealing ring 431. The sealing retaining ring 432 is connected to the sample cavity 4 by screws 433, and an extension portion 4321 extends downward along the inner side surface of the sample cavity 41 from the inner bottom surface.

[0032] Among them, the elastic supporting assembly 42 includes a sample ring support ring 421 and a spring 422 that slide up and down in contact with the inner side surface of the extension portion 4321. A guide column 423 is provided in the vertical direction on the inner bottom surface of the sample cavity 41 and / or the bottom surface of the sample ring support ring 421, and the spring 422 is sleeved on the guide column 423.

[0033] During use, the cake-shaped sample 100 formed by the sample pressing device is placed on the sample ring stripping ring 421. In order to ensure the integrity of the sample, a mesh ring 110 can be set on the outside of the sample pressing ring of the cake-shaped sample 100, and a mesh ring pressing ring 120 can be set on the outside of the mesh ring 110.

[0034] In the present invention, the sample delivery mechanism 5 includes a tray 51 placed in the sample chamber and used to support the sample chamber 4, a top block 52 that can slide up and down, and a lifting assembly that drives the top block 52 to slide up and down to lift the tray 51. The lifting assembly includes a sliding shaft 53 that can slide horizontally and has a sliding curved surface, and a trigger that drives the sliding shaft 53 to move horizontally. The top block 52 slides in conjunction with the sliding curved surface of the sliding shaft 53 to achieve up and down movement.

[0035] like Figure 5 and 6 As shown, the window end of the detector assembly 2 is located within the vacuum chamber 3. A block 21 for shielding the detector window is provided within the vacuum chamber 3. This block 21 is connected to a filter holder 33 located within the vacuum chamber 3 via a connector. The filter holder 33 is connected to a drive assembly 34 that drives it in the filter switching direction. The connector includes a shielding plate 23 located above the test window 31 and a support plate 22 connecting the shielding plate 23 to the filter holder 33. The block 21 is connected to the shielding plate 23. The drive assembly 34 utilizes a screw assembly and a motor. Since this is conventional technology, it will not be described in detail here.

[0036] In the non-working state, the block 21 completely blocks the detector window to prevent dust from accumulating on the detector window and affecting the test results; the shielding plate 23 can block most of the test window 31 to prevent dust from accumulating on the test window 31 and affecting the test results.

[0037] The dust-proof energy dispersive X-ray fluorescence spectrometer of the present invention performs dust-proof treatment by arranging a dust-proof component 9 at the air inlet of the vacuum pump 8, performs dust-proof treatment on the detector window and the test window in the vacuum chamber 3, and performs integrated dust-proof treatment between the vacuum chamber 3, the sample chamber 4 and the pipeline, thereby achieving control from the source, then specifically to the test window inside the instrument, and finally the connection between the vacuum chamber 3, the sample chamber 4 and the pipeline, thereby forming an overall dust-proof system, greatly reducing the dust from entering the instrument at a large-scale logging site. The equipment has low manufacturing cost, easy operation and reliable operation.

[0038] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will readily conceive of other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the present invention.

Claims

1. A dust-proof energy dispersive X-ray fluorescence spectrometer, characterized in that: The invention comprises a box body (1), wherein the interior of the box body (1) is divided into a test chamber and a sample chamber arranged above and below by a sample partition (11); a hollow vacuum cavity (3) is provided in the test chamber, the vacuum cavity (3) is connected to the sample partition (11) and is provided with a test window (31); the sample partition (11) is provided with an avoidance opening for exposing the test window (31); The sample chamber is provided with a sample cavity (4) with a sample cavity (41) on the top surface. The sample cavity (41) is located directly below the test window (31). An elastic supporting component (42) for supporting the sample is provided inside the sample cavity, and a sealing component (43) is provided at the cavity opening. The sample cavity (4) is connected to a sample delivery mechanism (5) for driving it to move upward, so that the sample supported by the elastic supporting component (42) and the sealing component (43) are tightly fitted with the sample partition (11). A mounting port (32) is provided on one side of the vacuum chamber (3), and the mounting port (32) can be connected to the interior of the vacuum chamber (3) and the sample chamber (41) through a gas pipe (6); the mounting port (32) is connected to a vacuum pipe joint (81) of a vacuum pump (8) through a hollow connecting rod (7); the air inlet of the vacuum pump (8) is connected to a dustproof component (9); one end of the connecting rod (7) is located in the mounting port (32) and is connected to a dustproof valve (71); The dustproof component (9) comprises a pipe joint (91) connected to the air inlet of the vacuum pump (8), a speed control valve (92) connected to the pipe joint (91) and a dust cover (93) connected to the speed control valve (92), the dust cover (93) is provided with a trumpet-shaped opening (931), and the inner bottom surface of the opening (931) is provided with a through hole (932) connected to the air inlet end of the speed control valve (92); the outer end of the opening (931) is covered and connected with a filter component (94); the filter component (94) comprises a partition (941), dustproof cotton (942) and a cover plate (943) arranged in sequence from the inside to the outside, the cover plate (943) is locked and connected to the end face of the dustproof cover (93) by a locking bolt (944); the partition (941) and the cover plate (943) are both provided with a plurality of small holes in an array.

2. The dust-proof energy dispersive X-ray fluorescence spectrometer according to claim 1, characterized in that: An annular stepped hole is provided at the opening of the sample cavity (41); the sealing assembly (43) comprises a sealing ring (431) arranged on the inner side of the stepped hole and a sealing retaining ring (432) arranged on the inner side of the sealing ring (431); the sealing retaining ring (432) is connected to the sample cavity (4) via a screw (433), and an extension portion (4321) is extended downwardly from the inner bottom surface along the inner side surface of the sample cavity (41).

3. The dust-proof energy dispersive X-ray fluorescence spectrometer according to claim 2, characterized in that: The elastic supporting assembly (42) includes a sample ring support ring (421) and a spring (422) that are in upward and downward sliding contact with the inner side surface of the extension portion (4321). A guide column (423) is provided in the vertical direction on the inner bottom surface of the sample cavity (41) and / or the bottom surface of the sample ring support ring (421), and the spring (422) is sleeved on the guide column (423).

4. The dust-proof energy dispersive X-ray fluorescence spectrometer according to claim 1, characterized in that: The gas pipeline (6) includes a first channel (61) opened between the vacuum chamber (3) and the sample partition (11) and a second channel (62) opened in the vacuum chamber (3), wherein the first channel (61) is connected to the avoidance port and the test window (31), and the second channel (62) is connected to the first channel (61) and the installation port (32).

5. The dust-proof energy dispersive X-ray fluorescence spectrometer according to claim 1, characterized in that: The sample delivery mechanism (5) comprises a tray (51) placed in the sample chamber and used to carry the sample cavity (4), a top block (52) that can slide up and down, and a lifting component that drives the top block (52) to slide up and down to lift the tray (51).

6. The dust-proof energy dispersive X-ray fluorescence spectrometer according to any one of claims 1 to 5, characterized in that: A detector assembly (2) is provided in the test chamber, a window end of the detector assembly (2) is located in the vacuum chamber (3), and a block (21) for blocking the detector window is provided in the vacuum chamber (3); the block (21) is connected to a filter holder (33) located in the vacuum chamber (3) via a connecting piece, and the filter holder (33) is connected to a driving assembly (34) for driving the filter holder (33) to move along a filter switching direction.

7. The dust-proof energy dispersive X-ray fluorescence spectrometer according to claim 6, characterized in that: The connecting member comprises a shielding plate (23) located above the test window (31) and a support plate (22) connecting the shielding plate (23) and the filter holder (33), and the stopper (21) is connected to the shielding plate (23).

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