Self-calibration X-ray ash analyzer

Abstract

The utility model relates to the technical field of ash content detection, in particular to a self-calibration X-ray ash content meter. The self-calibration X-ray ash analyzer comprises a detection mechanism, a standard component and a driving mechanism, wherein the detection mechanism is provided with a detection end and is used for detecting the ash content value of a material below the detection end; the standard component has a calibration state and a normal detection state; in the calibration state, at least part of the structure of the standard component is located below the detection end; in a normal detection state, the standard component is positioned on one side of the detection end; the driving mechanism is used for driving the standard component to be switched between the calibration state and the normal detection state. The X-ray ash analyzer can be remotely calibrated, so that the self-calibration requirement of a user on the X-ray ash analyzer is met; through regular calibration, the long-term reliability of the detection mechanism can be ensured, and the accuracy of the ash content value detected by the detection mechanism is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of ash content detection, in particular to a self-calibrating X-ray ash content instrument. Background Art

[0002] The ash content in coal is one of the coal pricing standards. Currently, X-ray ash analyzers that use ray transmission technology are mostly used to detect the ash content in coal.

[0003] The radioactive source has a half-life, and the intensity of the radioactive source will decrease over time. In addition, the changes in the particle size composition or density composition of the coal will lead to inaccurate measurements of the ash meter after a period of use. The ash meter must be calibrated regularly. However, the unit using the ash meter does not have a dedicated person to calibrate the ash meter, and the ash meter manufacturer is far away from the site, resulting in the ash meter not being calibrated in time, and the measured ash value has lost its guiding significance for coal preparation production and equipment operation. Utility Model Content

[0004] The utility model aims to provide a self-calibrating X-ray ash meter to solve the technical problem in the prior art that the X-ray ash meter cannot be calibrated in time, resulting in inaccurate ash values ​​measured.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A self-calibrating X-ray ash analyzer, comprising:

[0007] A detection mechanism having a detection end; the detection mechanism is used to detect the ash value of the material located below the detection end;

[0008] The standard part has a calibration state and a normal detection state; in the calibration state, at least a part of the structure of the standard part is located below the detection end; in the normal detection state, the standard part is located on one side of the detection end;

[0009] The driving mechanism is used to drive the standard component to switch between the calibration state and the normal detection state.

[0010] Furthermore, the driving mechanism comprises a fixed end and a telescopic end, and the standard component is connected to the telescopic end of the driving mechanism.

[0011] Furthermore, it also includes a box body, and a radiation detection port is opened at the bottom of the box body;

[0012] The detection mechanism is disposed in the box, and the detection end faces the ray detection port.

[0013] Furthermore, the driving mechanism is disposed in the box;

[0014] The bottom of the box body is provided with a slide groove;

[0015] The standard part comprises a calibration part and a connecting part; the calibration part is slidably arranged in the slide groove, and two ends of the connecting part are respectively connected to the calibration part and the driving mechanism.

[0016] Furthermore, a avoidance groove is provided at the bottom of the box body, and the radiation detection port is provided on the bottom wall of the avoidance groove;

[0017] The slide groove is connected to the avoidance groove.

[0018] Furthermore, a blocking plate is provided on the standard component, and the blocking plate is used to block the gap formed between the standard component and the slide groove.

[0019] Furthermore, the outer edge portion of the blocking plate is overlapped on the box body.

[0020] Furthermore, it also includes a sealing gasket arranged between the sealing plate and the box body.

[0021] Furthermore, the sealing gasket is fixed on the sealing plate or the box body.

[0022] Furthermore, the upper end surface of the calibration portion is flush with the lower end surface of the box body;

[0023] Or, the lower end surface of the calibration part is flush with the lower end surface of the box body, a protruding structure is provided on the lower end surface of the calibration part, and a groove is provided on the upper end surface of the calibration part corresponding to the position of the protruding structure, and the bottom surface of the groove is flush with the lower end surface of the box body; in the calibration state, the bottom surface of the groove is located below the detection end.

[0024] Beneficial effects of the utility model:

[0025] The utility model provides a self-calibration X-ray ash meter, which comprises a detection mechanism, a standard part and a driving mechanism; wherein: the detection mechanism has a detection end for detecting the ash value of a material located below the detection end; the standard part has a calibration state and a normal detection state; in the calibration state, at least part of the structure of the standard part is located below the detection end; in the normal detection state, the standard part is located at one side of the detection end; the driving mechanism is used to drive the standard part to switch between the calibration state and the normal detection state.

[0026] When the X-ray ash analyzer is working normally, the standard part is in the normal detection state. At this time, the standard part is located on one side of the detection end, so as not to affect the X-ray ash analyzer's detection of the ash value of the material; after the X-ray ash analyzer has been used for a period of time, the control driving mechanism drives the standard part to switch the standard part from the normal detection state to the calibration state. At this time, at least part of the structure of the standard part is located below the detection end, and the control detection mechanism measures the standard part and records the measurement results. According to the known characteristics of the standard part, the response error of the detection mechanism can be calculated and corrected. By regular calibration, the long-term reliability of the detection mechanism can be guaranteed, and the accuracy of the ash value measured by the detection mechanism can be ensured. The self-calibration X-ray ash analyzer can be calibrated remotely, thereby solving the problem that the user unit does not have the calibration capability and the ash analyzer manufacturer is far away from the site, making the X-ray ash analyzer more humane and meeting the user's self-calibration needs for the X-ray ash analyzer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the internal structure of a self-calibrating X-ray ash analyzer when a standard part is in a normal detection state is provided for an embodiment of the utility model;

[0029] Figure 2 A schematic diagram of the internal structure of a self-calibrating X-ray ash analyzer when a standard part is in a calibration state is provided for an embodiment of the utility model;

[0030] Figure 3 A three-dimensional structural schematic diagram of a self-calibrating X-ray ash analyzer is provided for an embodiment of the utility model;

[0031] Figure 4 A schematic diagram of the structure of a detection mechanism provided by an embodiment of the utility model;

[0032] Figure 5 The embodiment of the utility model provides a standard part in a normal detection state. Figure 3 Enlarged view at B;

[0033] Figure 6 The embodiment of the utility model provides a method for adjusting the calibration state of the standard part. Figure 3 Enlarged view at B;

[0034] Figure 7A schematic diagram of the structure of a standard part and a sealing gasket provided in one embodiment of the utility model;

[0035] Figure 8 A schematic diagram of the structure of a standard part and a sealing gasket provided in another embodiment of the utility model;

[0036] Fig. 9 A structural schematic diagram of a standard part provided in an embodiment of the utility model when a protruding structure is provided on the standard part.

[0037] icon:

[0038] 1-detection mechanism; 11-X-ray tube; 12-detector; 13-collimator;

[0039] 2-standard parts; 21-blocking plate;

[0040] 3- Driving mechanism;

[0041] 4-box; 41-ray detection port; 42-slideway; 43-avoidance slot;

[0042] 5-Sealing gasket. DETAILED DESCRIPTION

[0043] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] It should be noted that in the description of the present invention, the terms "connection" and "installation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or connected through an intermediate medium; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the prior art, the unit using the ash meter does not have a dedicated person to calibrate the ash meter, and the ash meter manufacturer is far away from the site, which results in the ash meter not being calibrated in time and the measured ash value being inaccurate.

[0047] Based on this, the present invention provides a self-calibrating X-ray ash analyzer. Figure 1 and Figure 2 , the X-ray ash analyzer comprises:

[0048] The detection mechanism 1 has a detection end; the detection mechanism 1 is used to detect the ash value of the material located below the detection end;

[0049] The standard part 2 has a calibration state and a normal detection state; in the calibration state, at least part of the structure of the standard part 2 is located below the detection end; in the normal detection state, the standard part 2 is located on one side of the detection end;

[0050] The driving mechanism 3 is used to drive the standard component 2 to switch between a calibration state and a normal detection state.

[0051] In the above structure, the standard part 2 is used for the calibration of the detection mechanism 1. Specifically, when the X-ray ash analyzer is working normally, the standard part 2 is in a normal detection state. At this time, the standard part 2 is located on one side of the detection end, so as not to affect the X-ray ash analyzer's detection of the ash value of the material; after the X-ray ash analyzer has been used for a period of time, the control driving mechanism 3 drives the standard part 2 to switch the standard part 2 from the normal detection state to the calibration state. At this time, at least part of the structure of the standard part 2 is located below the detection end, and the detection mechanism 1 is controlled to measure the standard part 2 and record the measurement results. According to the known characteristics of the standard part 2, the response error of the detection mechanism 1 can be calculated and corrected. By performing calibration regularly, the long-term reliability of the detection mechanism 1 can be guaranteed, and the accuracy of the ash value measured by the detection mechanism 1 can be ensured.

[0052] The self-calibration X-ray ash meter provided by the present application can be calibrated remotely, thereby solving the problem that the user unit does not have the calibration capability and the ash meter manufacturer is far away from the site, making the X-ray ash meter more user-friendly and meeting the user's self-calibration needs for the X-ray ash meter; and, since the standard part 2 has a set motion trajectory, the standard part 2 can be in the optimal calibration position during each calibration process, thereby ensuring the effect of each calibration; in addition, when calibrating the X-ray ash meter provided by the present application, it is only necessary to control the standard part 2 to switch between the calibration state and the normal detection state, without moving and / or disassembling the equipment, making the calibration process convenient and quick.

[0053] The standard part 2 is made of pure element materials; for example, the standard part 2 can be made of pure metal element materials such as iron, copper, aluminum, etc. The above setting can avoid mutual interference between different elements, making the calibration more accurate and convenient.

[0054] In this embodiment, the driving mechanism 3 includes a fixed end and a telescopic end, and the standard component 2 is connected to the telescopic end of the driving mechanism 3 .

[0055] Optionally, the driving mechanism 3 includes driving parts such as air cylinders, oil cylinders, and motors. The output end of the driving part can be directly connected to the standard part 2, or indirectly connected to the standard part 2 through a gear rack structure or a connecting rod structure, both of which can drive the standard part 2 to switch between a calibration state and a normal detection state.

[0056] Reference Figure 2 and Figure 3 The X-ray ash analyzer further comprises a box body 4, and a ray detection port 41 is provided at the bottom of the box body 4;

[0057] The detection mechanism 1 is disposed in the box 4 , with the detection end facing the radiation detection port 41 .

[0058] During operation, the box 4 is suspended above the conveyor belt, and the material is transported through the conveyor belt; when the material passes through the box 4, the material on the conveyor belt that is higher than the lower end surface of the box 4 is pushed away by the side of the box 4, and the lower end surface of the box 4 directly contacts the material and smoothes the material passing through the box 4. Since the distance between the lower end surface of the box 4 and the conveyor belt is fixed, the distance between the detection mechanism 1 and the material is also fixed, thereby improving the detection accuracy of the detection mechanism 1 and the accuracy of the detection results. In addition, the box 4 can protect the detection mechanism 1 and other internal electronic equipment from interference and collisions from external objects, thereby improving the service life of the detection mechanism 1 and other internal electronic equipment.

[0059] Reference Figure 4 The detection mechanism 1 includes an X-ray tube 11, a detector 12 and a collimator 13; the output end of the X-ray tube 11 and the receiving end of the detector 12 are all facing the ray detection port 41; the collimator 13 is arranged at the output end of the X-ray tube 11.

[0060] During operation, the light source output by the X-ray tube 11 passes through the ray detection port 41 and irradiates the material. The collimator 13 is used to eliminate scattered X-rays. The detector 12 is used to receive the X-ray fluorescence rays excited by the light source after irradiating the material, and the ash content of the coal is detected through the signal received by the detector 12.

[0061] In this embodiment, a dustproof film is laid at the ray detection port 41. The dustproof film can prevent impurities such as coal powder from entering the box body 4, and play a certain protective role on the detection mechanism 1 and some other electronic components inside the box body 4.

[0062] Reference Figure 5 and Figure 6 , the driving mechanism 3 is arranged in the box body 4;

[0063] A slide groove 42 is provided at the bottom of the box body 4;

[0064] The standard part 2 includes a calibration part and a connecting part; the calibration part is slidably disposed in the slide groove 42, and two ends of the connecting part are respectively connected to the calibration part and the driving mechanism 3.

[0065] Specifically, the calibration part and the connecting part are connected in an L shape, the calibration part is laid flat in the slide groove 42 and can slide in the slide groove 42 in a direction away from or close to the radiation detection port 41; the lower end of the connecting part is connected to the calibration part, and the upper end of the connecting part extends into the box body 4 and is connected to the driving mechanism 3; when the telescopic end of the driving mechanism 3 is extended or retracted, the calibration part is driven by the connecting part to slide in the slide groove 42 in a direction away from or close to the radiation detection port 41, so that the standard part 2 can switch between the normal detection state and the calibration state.

[0066] Furthermore, a avoidance groove 43 is provided at the bottom of the box body 4, and the radiation detection port 41 is provided on the bottom wall of the avoidance groove 43;

[0067] The slide groove 42 is connected to the avoidance groove 43 .

[0068] In the above structure, the avoidance groove 43 can separate the material and the radiation detection port 41, thereby preventing the radiation detection port 41 and the dust-proof film at the radiation detection port 41 from direct contact with the material; on the one hand, the above arrangement can reduce the wear of the material on the dust-proof film and increase the service life of the dust-proof film; on the other hand, it can alleviate the problem of the material entering the interior of the box 4 from the radiation detection port 41 after the dust-proof film is worn.

[0069] Since the radiation detection port 41 is arranged on the bottom wall of the avoidance groove 43, and the slide groove 42 is connected to the avoidance groove 43; when the X-ray ash analyzer needs to be calibrated, the standard part 2 is controlled to move so that part of the calibration part moves from the slide groove 42 to the avoidance groove 43, and moves to the bottom of the radiation detection port 41. At this time, the light source output outward by the detection mechanism 1 can pass through the radiation detection port 41 to irradiate the calibration part to achieve the measurement of the standard part 2; when the X-ray ash analyzer does not need to be calibrated, the standard part 2 is controlled to move so that the calibration part in the avoidance groove 43 moves back to the slide groove 42. At this time, the radiation detection port 41 is not blocked and does not affect the detection of the material.

[0070] The X-ray ash analyzer provided in the present application can also cover the radiation detection port 41 through the standard part 2 when not in use, thereby protecting the dust-proof film at the radiation detection port 41 to avoid damage to the dust-proof film during long-term non-use and transportation, and at the same time prevent external objects from passing through the radiation detection port 41 to damage the internal structure of the box 4.

[0071] Continue to refer to Figure 5 and Figure 6A blocking plate 21 is provided on the standard part 2 , and the blocking plate 21 is used to block the gap formed between the standard part 2 and the slide groove 42 .

[0072] Reference Figure 5 When the standard part 2 is in a normal detection state, the calibration part is located on one side of the radiation detection port 41. At this time, the calibration part and the slide groove 42 are tightly fitted, and there is no gap between the two. Figure 6 When the standard part 2 is in the calibration state or is switched from the normal detection state to the calibration state, a gap is formed between the calibration part and the slide groove 42, and the gap is covered by the blocking plate 21, thereby preventing external dust or materials from entering the box body 4 through the gap.

[0073] Specifically, the blocking plate 21 and the calibration part are respectively fixed on opposite sides of the connecting part. The blocking plate 21, the calibration part and the connecting part can be synchronously extended and retracted under the drive of the driving mechanism 3, so that the blocking plate 21 can timely block the gap formed between the standard part 2 and the slide groove 42.

[0074] Reference Figure 6 and Figure 7 , the outer edge of the blocking plate 21 overlaps the box body 4. In this embodiment, the width of the marking portion is the same as the width of the slide groove 42, and the width of the blocking plate 21 is greater than the width of the marking portion and the slide groove 42, so the outer edge of the blocking plate 21 can overlap the upper part of the box body 4 located around the slide groove 42.

[0075] On the basis of the above structure, the X-ray ash analyzer further includes a sealing gasket 5 disposed between the blocking plate 21 and the housing 4. The sealing gasket 5 is made of elastic material such as rubber, and is tightly clamped between the blocking plate 21 and the housing 4, thereby preventing external dust or materials from entering the housing 4 from the gap between the blocking plate 21 and the chute 42.

[0076] Optionally, the sealing gasket 5 is fixed on the sealing plate 21 or the box body 4 .

[0077] When the sealing gasket 5 is fixed on the blocking plate 21, the sealing gasket 5 moves synchronously with the standard part 2. Figure 7 , the sealing gasket 5 may be a U-shaped structure, which is laid on the outer edge of the blocking plate 21; Figure 8 The sealing gasket 5 may also be a square or rectangular structure, which covers the lower end surface of the blocking plate 21.

[0078] When the sealing gasket 5 is fixed on the box body 4, refer to Figure 7 The sealing gasket 5 may be a U-shaped structure, which is laid on the box body 4 located around the slide groove 42. The calibration part can enter or move out of the sealing gasket 5 through the opening of the sealing gasket 5, thereby preventing the sealing gasket 5 from hindering the movement of the standard part 2.

[0079] As an optional embodiment, the upper end surface of the calibration part is flush with the lower end surface of the box body 4. In this embodiment, the lower end surface of the box body 4 is in direct contact with the material; the upper end surface of the calibration part is flush with the lower end surface of the box body 4, that is, the upper end surface of the calibration part and the detection surface of the material are located at the same horizontal plane, making the calibration more accurate and reliable.

[0080] As another optional embodiment, refer to Fig. 9 , the lower end surface of the calibration part is flush with the lower end surface of the box 4, a convex structure is provided on the lower end surface of the calibration part, and a groove is provided on the upper end surface of the calibration part corresponding to the position of the convex structure, and the bottom surface of the groove is flush with the lower end surface of the box 4; in the calibration state, the bottom surface of the groove is located below the detection end. In this embodiment, the bottom surface of the groove and the detection surface of the material are located at the same horizontal plane; the lower end surface of the calibration part is flush with the lower end surface of the box 4, thereby reducing the blocking effect of the standard part 2 on the material.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A self-calibrating X-ray ash analyzer, characterized in that: include: A detection mechanism (1) having a detection end; the detection mechanism (1) is used to detect the ash value of a material located below the detection end; A standard part (2) having a calibration state and a normal detection state; In the calibration state, at least part of the structure of the standard component (2) is located below the detection end; in the normal detection state, the standard component (2) is located on one side of the detection end; A driving mechanism (3) is used for driving the standard component (2) to switch between the calibration state and the normal detection state.

2. The self-calibrating X-ray ash analyzer according to claim 1, characterized in that: The driving mechanism (3) comprises a fixed end and a telescopic end, and the standard component (2) is connected to the telescopic end of the driving mechanism (3).

3. The self-calibrating X-ray ash analyzer according to claim 2, characterized in that: It also includes a box body (4), the bottom of which is provided with a radiation detection port (41); The detection mechanism (1) is arranged in the box (4), and the detection end faces the radiation detection port (41).

4. The self-calibrating X-ray ash analyzer according to claim 3, characterized in that: The driving mechanism (3) is arranged in the box (4); The bottom of the box body (4) is provided with a slide groove (42); The standard part (2) comprises a calibration part and a connecting part; the calibration part is slidably arranged in the slide groove (42), and two ends of the connecting part are respectively connected to the calibration part and the driving mechanism (3).

5. The self-calibrating X-ray ash analyzer according to claim 4, characterized in that: The bottom of the box body (4) is provided with an avoidance groove (43), and the radiation detection port (41) is arranged on the bottom wall of the avoidance groove (43); The sliding groove (42) is connected to the avoidance groove (43).

6. The self-calibrating X-ray ash analyzer according to claim 4, characterized in that: A blocking plate (21) is provided on the standard component (2), and the blocking plate (21) is used to block a gap formed between the standard component (2) and the slide groove (42).

7. The self-calibrating X-ray ash analyzer according to claim 6, characterized in that: The outer edge portion of the blocking plate (21) overlaps the box body (4).

8. The self-calibrating X-ray ash analyzer according to claim 7, characterized in that: It also includes a sealing gasket (5) arranged between the sealing plate (21) and the box body (4).

9. The self-calibrating X-ray ash analyzer according to claim 8, characterized in that: The sealing gasket (5) is fixed on the sealing plate (21) or the box body (4).

10. The self-calibrating X-ray ash analyzer according to claim 4, characterized in that: The upper end surface of the calibration portion is flush with the lower end surface of the box body (4); Alternatively, the lower end surface of the calibration portion is flush with the lower end surface of the box (4), a protruding structure is provided on the lower end surface of the calibration portion, and a groove is provided on the upper end surface of the calibration portion corresponding to the position of the protruding structure, and the bottom surface of the groove is flush with the lower end surface of the box (4); in the calibration state, the bottom surface of the groove is located below the detection end.

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