XRF detection system

Abstract

The invention belongs to the technical field of XRF detection, and discloses an XRF detection system which comprises an XRF detector, a detection box, a material box assembly and a vacuum pump, the detection box is provided with a containing cavity and a first through hole, the XRF detector is arranged in the containing cavity, a detection part of the XRF detector right faces the first through hole, the material box assembly comprises a material box, the material box is provided with a containing groove, and the containing groove is communicated with the material box. Detection materials can be placed at the bottom of the containing groove, a groove opening of the containing groove right faces the first through hole, and the edge of the containing groove can be tightly pressed on the edge of the first through hole in a sealed mode so that the containing groove can be communicated with the containing cavity in a sealed mode through the first through hole, and at least one of the containing cavity and the containing groove is communicated with the air suction end of the vacuum pump. The XRF detection system can provide a vacuum environment for the detection process of the XRF detector, so that powerful guarantee can be provided for the XRF detection precision.

Description

Technical Field

[0001] The present invention relates to the technical field of XRF detection, and in particular to an XRF detection system. Background Art

[0002] With the development of non-ferrous metal smelting technology and modern information technology, in order to improve the precise control of the smelting process, researchers have paid more attention to the accurate information of the types and contents of the corresponding elements contained in the non-ferrous metal ores. At present, XRF detectors (X-ray spectrometers) are often used to detect the types and contents of elements in non-ferrous metal ores.

[0003] When using an XRF detector for detection, substances in the air have a significant impact on the detection process and detection results. Therefore, it is urgent to provide an XRF detection system to solve the above technical problems. Summary of the invention

[0004] The object of the present invention is to provide an XRF detection system, which has the effect of improving the XRF detection accuracy.

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

[0006] XRF testing system, including:

[0007] XRF detector;

[0008] A detection box, wherein the detection box is provided with a receiving cavity and a first through hole, the XRF detector is arranged in the receiving cavity, and the detection part of the XRF detector is directly opposite to the first through hole;

[0009] A material box assembly, the material box assembly includes a material box, the material box is provided with a receiving groove, the test material can be placed at the bottom of the receiving groove, the notch of the receiving groove is directly opposite to the first through hole, and the edge of the receiving groove can be sealed and pressed against the edge of the first through hole, so that the receiving groove is sealed and connected with the receiving cavity through the first through hole;

[0010] The vacuum pump, at least one of the accommodating chamber and the accommodating groove is communicated with the suction end of the vacuum pump.

[0011] Optionally, the XRF detection system also includes a driving unit, which includes a first support member and a driving assembly. The fixed end of the driving assembly is arranged on the first support member, the driving end of the driving assembly is drivingly connected to a side of the material box away from the detection box, and the driving direction of the driving assembly is parallel to the axial direction of the first through hole.

[0012] Optionally, the material box assembly further includes a first elastic member, and the driving end of the driving assembly is elastically connected to the material box via the first elastic member.

[0013] Optionally, the material box assembly also includes a supporting box, a fixed seat and a movable seat, the supporting box is provided with an open cavity, the opening of the open cavity is arranged toward the detection box, the fixed seat is fixed in the open cavity, a concave platform is provided on the side of the fixed seat facing the detection box, the movable seat is provided with a first limiting groove, the two ends of the first elastic member are respectively embedded in the concave platform and the first limiting groove, the driving end of the driving assembly is connected to the side of the supporting box away from the fixed seat, the material box is connected to the side of the movable seat away from the first elastic member, and when the edge of the accommodating groove is not sealed and pressed against the edge of the first through hole, the side of the material box with the accommodating groove extends out of the open cavity.

[0014] Optionally, the first elastic member has a first compression state and a second compression state. When the first elastic member is in the first compression state, the edge of the accommodating groove is sealed and pressed against the edge of the first through hole, and the edge of the opening of the opening cavity is spaced apart from the detection box. When the first elastic member is in the second compression state, the edge of the accommodating groove is sealed and pressed against the edge of the first through hole, and the edge of the opening of the opening cavity is sealed and pressed against the side of the detection box facing the material box.

[0015] Optionally, the driving assembly includes a driving member and a second elastic member, the fixed end of the driving member is arranged on the first supporting member, and the driving end of the driving member is elastically connected to the supporting box through the second elastic member.

[0016] Optionally, the driving assembly also includes a transmission member, one end of the transmission member is connected to a side of the support box away from the fixed seat, the other end of the transmission member is provided with a second limiting groove, the second elastic member is inserted in the second limiting groove, and the two ends of the second elastic member are respectively connected to the bottom of the second limiting groove and the driving end of the driving member.

[0017] Optionally, the material box assembly further includes a limiting cylinder, which is sleeved on the fixed seat and fixed in the opening cavity, and the movable seat is movably inserted into the limiting cylinder along the axial direction of the limiting cylinder.

[0018] Optionally, the material box is detachably connected to a side of the movable seat facing away from the first elastic member.

[0019] Optionally, one of the side of the material box facing the movable seat and the side of the movable seat facing the material box is provided with a protrusion, and the other is provided with a socket, and the protrusion is detachably plugged into the socket.

[0020] Beneficial effects of the present invention:

[0021] In the XRF detection system provided by the present invention, the XRF detector is arranged in the accommodating cavity of the detection box, and the detection part of the XRF detector is opposite to the first through hole of the detection box, and the notch of the accommodating groove of the material box is opposite to the first through hole, the detection material is placed on the groove bottom of the accommodating groove, and the edge of the accommodating groove is sealed and pressed against the edge of the first through hole, so that the accommodating groove is sealed and connected with the accommodating cavity through the first through hole, the vacuum pump is started, and the air in the accommodating cavity and the accommodating groove is extracted, so that the XRF detector and the detection material are in a vacuum environment, and the detection part of the XRF detector detects the detection material in the accommodating groove through the first through hole. It can be seen that the XRF detection system realizes the detection of the detection material in a vacuum environment, which has the effect of improving the XRF detection accuracy.

[0022] Secondly, compared with placing the XRF detector and the test material in two different vacuum environments respectively, or placing only one of the XRF detector and the test material in a vacuum environment, the receiving slot of the XRF detection system is sealed and connected to the receiving cavity through the first through hole, so that the XRF detector and the test material can be in the same vacuum environment, avoiding the interference problem caused by the different environments of the XRF detector and the test material, and thus can further improve the XRF detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the XRF detection system provided by the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the detection box, the material box assembly and the driving unit provided by the present invention;

[0025] Figure 3 is a schematic structural diagram of the material box assembly provided by the present invention without showing the first elastic member;

[0026] Figure 4 It is a schematic diagram of the structure of the detection box provided by the present invention.

[0027] In the figure:

[0028] 1. XRF detector; 2. Detection box; 21. Accommodation cavity; 22. Cover body; 221. Second through hole; 23. Support plate; 231. First through hole; 24. Second sealing ring; 25. Conductive column; 26. Data guide column; 3. Material box assembly; 31. Material box; 311. Accommodation groove; 312. Protrusion; 313. Material hammer; 314. Material tube; 3141. Convex edge; 32. First elastic member; 33. Support box; 331. Open cavity; 332. First sealing ring; 34. Fixed seat; 341. Concave platform; 35. Movable seat; 351. First limiting groove; 36. Limiting cylinder; 4. Vacuum pump; 5. Driving unit; 51. First supporting member; 52. Driving assembly; 521. Driving member; 5211. Connecting head; 522. Second elastic member; 523. Transmission member; 524. End cover; 53. Second supporting member; 54. Linear bearing; 6. Air detection assembly; 7. Controller. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0033] This embodiment provides an XRF detection system, which is mainly used in the feeding section of non-ferrous metal smelting / melting furnace to detect the content of key elements (such as copper, lead, zinc, cadmium, arsenic, silicon, nitrogen and carbon) in the ore. The XRF detection system is suitable for laboratories and industrial sites, can provide a stable and reliable vacuum environment for the XRF detection process, and also realizes automated detection, which has the effect of improving the XRF detection accuracy and detection efficiency.

[0034] Specifically, if Figure 1 and Figure 2 As shown, the XRF detection system includes an XRF detector 1, a detection box 2, a material box assembly 3 and a vacuum pump 4, wherein the detection box 2 is provided with a accommodating chamber 21 and a first through hole 231, the XRF detector 1 is arranged in the accommodating chamber 21, and the detection part of the XRF detector 1 faces the first through hole 231, the material box assembly 3 includes a material box 31, the material box 31 is provided with a accommodating groove 311, the detection material (not shown in the figure) can be placed at the bottom of the accommodating groove 311, the notch of the accommodating groove 311 faces the first through hole 231, the edge of the accommodating groove 311 can be sealed and pressed against the edge of the first through hole 231, so that the accommodating groove 311 is sealed and communicated with the accommodating chamber 21 through the first through hole 231, and at least one of the accommodating chamber 21 and the accommodating groove 311 is communicated with the suction end of the vacuum pump 4.

[0035] First, the XRF detector 1 is arranged in the accommodating cavity 21 of the detection box 2, and the detection part of the XRF detector 1 is opposite to the first through hole 231 of the detection box 2, and the notch of the accommodating groove 311 of the material box 31 is opposite to the first through hole 231, the detection material is placed on the bottom of the accommodating groove 311, and the edge of the accommodating groove 311 is sealed and pressed against the edge of the first through hole 231, so that the accommodating groove 311 is sealed and connected with the accommodating cavity 21 through the first through hole 231, and the vacuum pump 4 is started to extract the air in the accommodating cavity 21 and the accommodating groove 311, so that the XRF detector 1 and the detection material are in a vacuum environment, and the detection part of the XRF detector 1 detects the detection material in the accommodating groove 311 through the first through hole 231 (exemplarily, the detection part of the XRF detector 1 irradiates the detection material through the first through hole 231 and receives the dispersed fluorescence reflected by the detection material to realize the detection of key elements in the detection material). It can be seen that the XRF detection system realizes the detection of the detection material in a vacuum environment, which has the effect of improving the XRF detection accuracy.

[0036] Secondly, compared with placing the XRF detector 1 and the test material in two different vacuum environments respectively, or placing only one of the XRF detector 1 and the test material in a vacuum environment, the receiving slot 311 of the XRF detection system is sealed and connected to the receiving cavity 21 through the first through hole 231, so that the XRF detector 1 and the test material can be in the same vacuum environment, avoiding the interference problem caused by the different environments of the XRF detector 1 and the test material, thereby further improving the XRF detection accuracy.

[0037] It should be pointed out that, in this embodiment, the specific structure and detection principle of the XRF detector 1 are prior arts in the art and will not be described in detail here.

[0038] Alternatively, if Figure 1 and Figure 2 As shown, the XRF detection system also includes a driving unit 5, which includes a first support member 51 and a driving component 52. The fixed end of the driving component 52 is arranged on the first support member 51, and the driving end of the driving component 52 is drivingly connected to the side of the material box 31 away from the detection box 2. The driving direction of the driving component 52 is parallel to the axial direction of the first through hole 231. Under the driving action of the driving component 52, the material box 31 can move in the direction toward the detection box 2 so that the edge of the receiving groove 311 is sealed and pressed against the edge of the first through hole 231. Compared with the manual pressing method, in this embodiment, the edge of the receiving groove 311 is sealed and pressed against the edge of the first through hole 231 by the driving component 52, which improves the effectiveness and stability of the edge of the receiving groove 311 being pressed against the edge of the first through hole 231, thereby providing a stable and reliable vacuum environment for XRF detection.

[0039] Alternatively, if Figure 1 and Figure 2 As shown, the material box assembly 3 also includes a first elastic member 32, and the driving end of the driving assembly 52 is elastically connected to the material box 31 through the first elastic member 32. When the edge of the accommodating groove 311 is sealed and pressed against the edge of the first through hole 231, the first elastic member 32 is in a compressed state, and the rebound force of the first elastic member 32 is applied to the material box 31, thereby increasing the pressing force of the edge of the accommodating groove 311 pressed against the edge of the first through hole 231, and further increasing the effectiveness and stability of the edge of the accommodating groove 311 pressed against the edge of the first through hole 231.

[0040] It should be noted that the first elastic member 32 may be an elastic element with a certain elasticity such as a spring or rubber.

[0041] Alternatively, if Figures 1 to 3 As shown, the material box assembly 3 also includes a support box 33, a fixed seat 34 and a movable seat 35. The support box 33 is provided with an open cavity 331, and the opening of the open cavity 331 is arranged toward the detection box 2. The fixed seat 34 is fixed in the open cavity 331. The side of the fixed seat 34 facing the detection box 2 is provided with a recessed platform 341, and the movable seat 35 is provided with a first limiting groove 351. The two ends of the first elastic member 32 are respectively embedded in the recessed platform 341 and the first limiting groove 351 to achieve the fixation of the first elastic member 32. The driving end of the driving assembly 52 is connected to the side of the support box 33 away from the fixed seat 34, and the material box 31 is connected to the side of the movable seat 35 away from the first elastic member 32. When the edge of the accommodating groove 311 is not sealed and pressed against the edge of the first through hole 231, the side of the material box 31 provided with the accommodating groove 311 extends out of the open cavity 331.

[0042] Furthermore, the first elastic member 32 has a first compression state and a second compression state. When the first elastic member 32 is in the first compression state, the edge of the accommodating groove 311 is sealed and pressed against the edge of the first through hole 231, and the edge of the opening of the opening cavity 331 is spaced apart from the detection box 2. When the first elastic member 32 is in the second compression state, the edge of the accommodating groove 311 is sealed and pressed against the edge of the first through hole 231, and the edge of the opening of the opening cavity 331 is sealed and pressed against the side of the detection box 2 facing the material box 31 (that is, the compression amount of the first elastic member 32 in the second compression state is greater than the compression amount in the first compression state). When the first elastic member 32 reaches the first compression state, at the time of the drive assembly 52 Under the driving action, the material box 31 continues to move in the direction toward the detection box 2 until the edge of the opening of the opening cavity 331 is pressed against the side of the detection box 2 facing the material box 31, so that the detection box 2 blocks the opening of the support box 33, and a sealed closed chamber is formed between the detection box 2 and the opening cavity 331. When the air in the accommodating cavity 21 and the accommodating groove 311 is evacuated, the material box 31 located in the opening cavity 331 is in the closed chamber. Compared with placing the material box 31 in the air, the design of placing the material box 31 in the closed chamber can improve the stability and effectiveness of the vacuum environment in the accommodating groove 311 and the accommodating cavity 21, thereby providing a further guarantee for the XRF detection accuracy. In addition, after the first elastic member 32 reaches the first compression state, under the driving action of the driving assembly 52, the material box 31 continues to move in the direction toward the detection box 2. In this process, the first elastic member 32 continues to be compressed, so that the edge of the accommodating groove 311 is further pressed against the edge of the first through hole 231, thereby improving the sealing between the two.

[0043] It should be pointed out that, in order to ensure that the edge of the opening of the opening cavity 331 can be effectively sealed and pressed against the detection box 2, when the first elastic member 32 is in the second compression state, the first elastic member 32 has not yet reached the maximum compression state.

[0044] It should also be pointed out that in order to ensure that the first elastic member 32 is compressed under the driving action of the driving assembly 52, in this embodiment, when the first elastic member 32 is in a natural state, the distance between the edge of the recess 341 and the edge of the first limiting groove 351 is greater than the compression amount when the first elastic member 32 is in the second compression state.

[0045] Furthermore, if Figures 1 to 3 As shown, a first groove is provided at the edge of the opening of the opening cavity 331, a first sealing ring 332 is embedded in the first groove, and the side of the first sealing ring 332 away from the bottom of the first groove protrudes out of the first groove. When the edge of the opening of the opening cavity 331 is pressed against the side of the detection box 2 facing the material box 31, the first sealing ring 332 is compressed to improve the sealing between the edge of the opening of the opening cavity 331 and the detection box 2.

[0046] Furthermore, if Figure 1 and Figure 2 As shown, the driving assembly 52 includes a driving member 521 and a second elastic member 522. The fixed end of the driving member 521 is arranged on the first support member 51. The driving end of the driving member 521 is elastically connected to the support box 33 through the second elastic member 522. When the edge of the opening of the opening cavity 331 is pressed against the side of the detection box 2 facing the material box 31, the second elastic member 522 is in a compressed and deformed state, thereby buffering and balancing the driving force applied by the driving member 521 to the support box 33, avoiding the problem of the edge of the opening of the opening cavity 331 and the side of the detection box 2 facing the material box 31 being crushed.

[0047] It should be noted that the driving member 521 may be a linear driving mechanism such as an electric push rod or a screw-type motor. The second elastic member 522 may be an elastic element with a certain elasticity such as a spring or rubber.

[0048] Furthermore, if Figure 2 and Figure 3 As shown, the driving assembly 52 also includes a transmission member 523, one end of the transmission member 523 is connected to the side of the support box 33 away from the fixed seat 34 by a bolt or other connecting member, and the other end of the transmission member 523 is provided with a second limiting groove, and the second elastic member 522 is inserted in the second limiting groove, and the two ends of the second elastic member 522 are respectively connected to the groove bottom of the second limiting groove and the driving end of the driving member 521, and the design of the second elastic member 522 being inserted in the second limiting groove realizes radial support and limitation of the second elastic member 522, and has the function of preventing the second elastic member 522 from radial deformation, so that in the process of the driving member 521 driving the material box assembly 3 to move toward the detection box 2, the notch of the accommodating groove 311 can always remain in a state of being opposite to the first through hole 231, ensuring that the edge of the accommodating groove 311 can be accurately pressed against the edge of the first through hole 231, and also ensuring that the detection part of the XRF detector 1 can detect the detection material in the accommodating groove 311 through the first through hole 231.

[0049] It should be noted that, in order to ensure the buffering and balancing effect of the second elastic member 522 on the driving force of the driving member 521 , when the edge of the opening of the opening cavity 331 is pressed against the side of the detection box 2 facing the material box 31 , the second elastic member 522 has not yet reached the maximum compression state.

[0050] Furthermore, if Figures 1 to 3 As shown, the drive assembly 52 also includes an end cover 524, which covers the notch of the second limiting groove to form a closed space inside the second limiting groove, thereby improving the overall structural consistency of the drive assembly 52 and protecting the second elastic member 522.

[0051] Furthermore, if Figures 1 to 3 As shown, the drive unit 5 also includes a second support member 53 and a linear bearing 54. The outer ring of the linear bearing 54 is fixed to the second support member 53 by bolts and other fixing members, and the transmission member 523 is passed through the inner ring of the linear bearing 54, thereby achieving a guiding effect on the movement of the transmission member 523, and the second support member 53 can also support the transmission member 523, further improving the stability and reliability of the guiding effect.

[0052] It should be pointed out that in order to ensure that the test material in the receiving groove 311 can be aligned with the detection part of the XRF detector 1, the edge of the opening of the opening cavity 331 can be sealed and pressed on the detection box 2, and the edge of the receiving groove 311 can be sealed and pressed on the edge of the first through hole 231, the receiving cavity 21, the first through hole 231, the receiving groove 311, the opening cavity 331, the concave platform 341 and the first limiting groove 351 need to be coaxially arranged, and the coaxiality of the above-mentioned components is less than 0.5mm, for example, the coaxiality can be 0.5mm, 0.3mm or 0.2mm, etc. In this embodiment, the driving unit 5 is provided with one, therefore, the second support member 53 also needs to maintain a coaxiality of less than 0.5mm with the above-mentioned components, and the coaxiality can be 0.5mm, 0.3mm or 0.2mm, etc.

[0053] Alternatively, if Figures 1 to 3 As shown, the driving end of the driving member 521 is provided with a connecting head 5211, the connecting head 5211 passes through the end cover 524 and extends into the second limiting groove, and the end surface of the connecting head 5211 extending into the second limiting groove is provided with a boss, and the boss is embedded in one end of the second elastic member 522 facing the driving member 521, thereby realizing the connection between the second elastic member 522 and the driving end of the driving member 521.

[0054] Alternatively, if Figures 1 to 3 As shown, the material box assembly 3 also includes a limiting cylinder 36, which is sleeved on the fixed seat 34 and fixed in the opening cavity 331, and the movable seat 35 can be movably inserted into the limiting cylinder 36 along the axial direction of the limiting cylinder 36, thereby achieving the effect of radial limiting the movable seat 35, so that the first elastic member 32 only has axial deformation but no radial deformation during the compression process. During the compression of the first elastic member 32, the notch of the accommodating groove 311 always remains in a state of being opposite to the first through hole 231, ensuring that the edge of the accommodating groove 311 can be accurately pressed against the edge of the first through hole 231, and also ensuring that the detection part of the XRF detector 1 can detect the detection material in the accommodating groove 311 through the first through hole 231.

[0055] Optionally, the material box 31 is detachably connected to the side of the movable seat 35 away from the first elastic member 32. During actual testing, the material box 31 can be removed from the movable seat 35 before the test material is taken in and placed, so as to reduce the operating difficulty of the XRF testing system.

[0056] In this embodiment, before the material box 31 is installed on the movable seat 35, the side of the movable seat 35 facing the detection box 2 extends out of the opening cavity 331, or the side of the movable seat 35 facing the detection box 2 is flush with the edge of the opening of the opening cavity 331, so that the operator or an automated device such as a manipulator can install the material box 31 on the movable seat 35. After the material box 31 is installed on the movable seat 35, the side of the material box 31 facing the detection box 2 extends out of the opening cavity 331, and the distance between the side of the material box 31 facing the detection box 2 and the material box 31 is smaller than the distance between the side of the first sealing ring 332 facing the detection box 2 and the material box 31, so as to ensure that the material box 31 can be sealed and pressed against the detection box 2, that is, the edge of the accommodating groove 311 is sealed and pressed against the edge of the first through hole 231.

[0057] Furthermore, if Figures 1 to 3 As shown, one of the side of the material box 31 facing the movable seat 35 and the side of the movable seat 35 facing the material box 31 is provided with a protrusion 312, and the other is provided with a socket, and the protrusion 312 is detachably plugged into the socket to achieve a detachable connection between the material box 31 and the movable seat 35. In this embodiment, the protrusion 312 is provided on the material box 31, and the socket is provided on the movable seat 35. Of course, in other embodiments, the protrusion 312 can also be provided on the movable seat 35, and the socket is provided on the material box 31.

[0058] It is understandable that the material box 31 and the movable seat 35 can also be detachably connected by other structures. For example, a dovetail groove is provided on the side of the movable seat 35 facing the material box 31, and a dovetail slider is provided on the side of the material box 31 facing the movable seat 35, and the dovetail slider is detachably connected to the dovetail groove. Alternatively, a bolt is passed through one of the material box 31 and the movable seat 35, and the bolt is threadedly connected to the other of the material box 31 and the movable seat 35. Other detachable connection structures between the material box 31 and the movable seat 35 are not listed here one by one.

[0059] Alternatively, if Figures 1 to 3As shown, the material box 31 includes a material hammer 313 and a material tube 314. The two opposite ends of the material hammer 313 are a first end and a second end respectively. The diameter of the first end is larger than the diameter of the second end. The first end is inserted and fixed in the material tube 314. A receiving groove 311 is formed between the end surface of the first end away from the second end and the inner wall of the material tube 314. The second end of the material hammer 313 extends out of the material tube 314, and the part of the material hammer 313 extending out of the material tube 314 forms a protrusion 312. When the protrusion 312 is inserted into the socket of the movable seat 35, the end of the material tube 314 facing the movable seat 35 is pressed on the movable seat 35 to improve the stability of the connection between the material box 31 and the movable seat 35. In addition, in order to improve the sealing reliability between the edge of the accommodating groove 311 and the edge of the first through hole 231, a convex edge 3141 is provided on the side wall of the end of the material tube 314 facing the detection box 2. The convex edge 3141 extends in a direction perpendicular to the axis of the material tube 314. When the convex edge 3141 is sealed and pressed against the edge of the first through hole 231, the edge of the accommodating groove 311 is sealed and pressed against the edge of the first through hole 231.

[0060] It should be pointed out that in the above structure, there is a first fitting gap between the material hammer 313 and the inner wall of the material tube 314, and there is a second fitting gap between the material tube 314 and the movable seat 35, and the accommodating groove 311 can be connected with the open cavity 331 through the first fitting gap and the second fitting gap. Therefore, when the first elastic member 32 is in the second compression state, the edge of the receiving groove 311 is sealed and pressed against the edge of the first through hole 231 (that is, the convex edge 3141 is sealed and pressed against the edge of the first through hole 231), and the edge of the opening of the opening cavity 331 is sealed and pressed against the side of the detection box 2 facing the material box 31, so that the material box 31 as a whole is in the closed chamber formed by the opening cavity 331 and the detection box 2. After the vacuum pump 4 is started, the air in the closed chamber, the receiving cavity 21 and the receiving groove 311 can be extracted together, and then when performing XRF detection, the closed chamber is also in a vacuum state, and the vacuum degrees in the closed chamber, the receiving cavity 21 and the receiving groove 311 are the same, which provides a guarantee for the effectiveness of the vacuum environment in which the XRF detector 1 and the detection material are located during XRF detection, thereby further improving the XRF detection accuracy.

[0061] Alternatively, if Figure 1 , Figure 2 as well as Figure 4 As shown, the detection box 2 includes a cover body 22, a support plate 23 and a second sealing ring 24, wherein the cover body 22 is snap-fitted with the support plate 23 and sealed by the second sealing ring 24 to form a accommodating chamber 21 between the cover body 22 and the support plate 23, the XRF detector 1 is arranged on the support plate 23, the first through hole 231 is opened on the support plate 23, the cover body 22 is provided with a second through hole 221, and the suction end of the vacuum pump 4 is connected to the accommodating chamber 21 through the second through hole 221.

[0062] In order to facilitate the assembly of the suction end of the vacuum pump 4 and the cover body 22, a quick-connect connector is provided on the second through hole 221. The size of the quick-connect connector can be determined according to the actual application. In this embodiment, a 6mm-8mm quick-connect connector is used.

[0063] It is understandable that in other embodiments, the second through hole 221 may be provided on the tube wall of the material tube 314 (i.e., the second through hole 221 is provided on the material box 31) so that the suction end of the vacuum pump 4 is connected to the receiving groove 311. Alternatively, the second through hole 221 may be provided on both the tube wall of the material tube 314 and the cover body 22 so that both the receiving chamber 21 and the receiving groove 311 are connected to the suction end of the vacuum pump 4.

[0064] Furthermore, if Figures 1 to 4 As shown, the XRF detection system also includes an air detection component 6, which includes a vacuum digital pressure gauge, an air filter, a pressure reducing valve and an oil mist collector. The suction end of the vacuum pump 4 is connected to the second through hole 221 through the vacuum digital pressure gauge, the air filter, the pressure reducing valve and the oil mist collector, so that after starting the vacuum pump 4, the vacuum degree in the closed chamber, the accommodating chamber 21 and the accommodating groove 311 is detected, and the air drawn from the closed chamber, the accommodating chamber 21 and the accommodating groove 311 is filtered and decompressed, so as to reduce the damage probability of the vacuum pump 4 and extend the service life of the vacuum pump 4.

[0065] Alternatively, if Figure 4 As shown, a conductive column 25 is installed on the cover body 22, and the conductive column 25 is conductively connected to the XRF detector 1, and the conductive column 25 is used to be conductively connected to an external power supply. In this embodiment, a two-core or three-core single-strand wire (bare wire) is provided in the center of the conductive column 25, and the outer periphery of the wire is wrapped with polypropylene (PP) material for injection molding. After injection molding, it is inserted into the assembly hole on the cover body 22 to complete the assembly of the conductive column 25 and the cover body 22. In the actual assembly process, the conductive column 25 and the assembly hole should be in an interference fit relationship to ensure the stability of the connection between the conductive column 25 and the cover body 22. In actual applications, if there is a gap between the conductive column 25 and the hole wall of the assembly hole, glue can be dripped into the gap for sealing.

[0066] Alternatively, if Figure 1 and Figure 4 As shown, a data guide post 26 is also installed on the cover body 22, and the XRF detection system also includes a controller 7. The XRF detector 1 is connected to the controller 7 through the data guide post 26, so that the controller 7 can control the start and stop of the XRF detector 1, and the XRF detector 1 can transmit data such as the detection result and the detection working status to the controller 7. In this embodiment, the structure of the data guide post 26 is the same as that of the conductive post 25, and the assembly structure of the data guide post 26 and the cover body 22 is the same as the assembly structure of the conductive post 25 and the cover body 22, which will not be repeated here.

[0067] Furthermore, the driving member 521, the vacuum pump 4 and the vacuum digital pressure gauge are all connected to the controller 7 by signal, so that the controller 7 can control the start and stop of the driving member 521, and then control the pressing state of the edge of the receiving groove 311 and the edge of the first through hole 231 (i.e. the sealing state between the material box 31 and the support plate 23), and the pressing state of the edge of the opening 331 and the detection box 2 (i.e. the sealing state between the support box 33 and the support plate 23). In addition, it is also convenient for the controller 7 to control the start and stop of the vacuum pump 4, realize the automatic detection of the XRF detection system, reduce manual operation, on the one hand, can improve the detection efficiency, and on the other hand, can solve the problem of reduced detection accuracy due to human error.

[0068] It should be pointed out that the signal connection method between the controller 7 and the XRF detector 1, the driving member 521, the vacuum pump 4 and the vacuum digital pressure gauge, and the control method of the controller 7 are all existing technologies in the field and will not be repeated here.

[0069] In this embodiment, the cover body 22 is made of 45# steel or cast iron material by turning process. Compared with the cover body 22 made by welding process, the cover body 22 made by turning process has no weld, which can avoid the problem of low air tightness at the weld position. The cover body 22 is provided with a second groove on the side facing the support plate 23, and the second sealing ring 24 is embedded in the second groove to achieve the fixing of the second sealing ring 24 on the cover body 22. The second sealing ring 24 can be selected from O-type nitrile sealing rings, and the wire diameter of the second sealing ring 24 is 3mm to 5mm.

[0070] The support plate 23 is made of 35# steel or 45# steel by turning process, and the surface of the support plate 23 facing the cartridge assembly 3 is polished to ensure that the first sealing ring 332 can be tightly pressed against the surface. A threaded blind hole is provided on the side of the support plate 23 facing the cover body 22, and a bolt is passed through the mounting portion of the XRF detector 1 and matched with the threaded blind hole to fix the XRF detector 1 on the support plate 23.

[0071] The support box 33 is made of No. 35 steel or No. 45 steel through a turning process, and the fixed seat 34 and the support box 33 are an integrated structure, that is, during the turning process, the fixed seat 34 and the support box 33 are turned together. The edge of the opening of the opening cavity 331 is provided with a first groove, that is, the side of the support box 33 facing the detection box 2 is provided with a first groove, and the inner wall and the bottom of the first groove are polished. The first sealing ring 332 is embedded in the first groove, which can improve the sealing between the first sealing ring 332 and the inner wall of the first groove, and the sealing between the first sealing ring 332 and the bottom of the first groove. The movable seat 35 and the limiting cylinder 36 are both made of stainless steel materials, and then assembled with the support box 33 respectively.

[0072] In this embodiment, the first elastic member 32 is a spring made of steel. In a natural state, the length of the first spring is 70 mm, the wire diameter of the first spring is 2 mm, the diameter of the first spring is 32 mm, and the maximum rebound force of the first spring is 150N.

[0073] The second elastic member 522 is a spring made of steel. In a natural state, the length of the second elastic member 522 is 40 mm, the wire diameter of the second elastic member 522 is 3 mm, the diameter of the second elastic member 522 is 34 mm, and the maximum rebound force of the second elastic member 522 is 250N.

[0074] In this embodiment, the transmission member 523 and the second support member 53 can be made of No. 35 steel or No. 45 steel. The side wall of the transmission member 523 is polished and grease is applied on the side wall of the transmission member 523 to reduce the friction between the transmission member 523 and the inner ring of the linear bearing 54.

[0075] In this embodiment, the connector 5211 and the end cover 524 can be made of No. 35 steel or No. 45 steel.

[0076] In this embodiment, the driving member 521 is an electric push rod, the driving speed of the electric push rod is 7 mm / s, the maximum thrust is 1400 N, and under the control of the controller 7, the position accuracy of the electric push rod is 0.2 mm.

[0077] See also Figures 1 to 4 When the XRF detection system provided in this embodiment is used for detection, the detection material is placed in the receiving groove 311, and then the operator holds the material box 31 (or clamps the material box 31 through an automated device such as a manipulator) so that the protrusion 312 of the material box 31 is located directly above the insertion hole of the movable seat 35. The driving member 521 is started, and under the driving action of the driving member 521, the support box 33 moves upward, so that the protrusion 312 of the material box 31 is inserted into the insertion hole of the movable seat 35, and then the operator releases the material box 31 (if an automated device such as a manipulator is used to clamp the material box 31, after the protrusion 312 is inserted into the movable seat 35, the manipulator releases the material box 31).

[0078] The driving member 521 continues to drive the support box 33 to move upward, and the material box 31 moves upward together with the support box 33, that is, moves in the direction toward the detection box 2. When the material box 31 contacts the detection box 2 (that is, the convex edge 3141 of the material tube 314 contacts the support plate 23 of the detection box 2), as the support box 33 moves, the first elastic member 32 is compressed until the material box 31 and the detection box 2 are sealed and pressed, so that the accommodating groove 311 and the accommodating cavity 21 both become sealed spaces. The driving member 521 continues to drive the support box 33 to move upward. After the first sealing ring 332 contacts the detection box 2 (that is, the first sealing ring 332 contacts the support plate 23 of the detection box 2), as the support box 33 moves, the second elastic member 522 is compressed, and the first elastic member 32 continues to be compressed until the support box 33 and the detection box 2 are sealed and pressed tightly (in this embodiment, under the driving action of the driving member 521, the first sealing ring 332 is first pressed tightly on the support plate 23 of the detection box 2, and then the edge of the opening of the opening cavity 331 is pressed tightly on the support plate 23 of the detection box 2), so that the closed chamber, the accommodating groove 311 and the accommodating cavity 21 all become sealed spaces, and the driving member 521 stops driving at this time. In this state, the first elastic member 32 always remains in a compressed state, so that the material box 31 always remains in a sealed and pressed state with the detection box 2, and the second elastic member 522 always remains in a compressed state, so that the support box 33 always remains in a sealed and pressed state with the detection box 2. In addition, the second elastic member 522 can also buffer and balance the driving force of the driving member 521, thereby reducing the probability of the first sealing ring 332 and the support plate 23 being crushed due to excessive driving force.

[0079] After the driving member 521 stops driving, the vacuum pump 4 is started, and the air in the closed chamber, the containing groove 311 and the containing cavity 21 is evacuated by the vacuum pump 4. When the preset vacuum degree is reached, the XRF detector 1 is started, so that the XRF detector 1 detects the test material in the containing groove 311 under a vacuum environment, and during the detection process, the XRF detector 1 transmits the detection data to the controller 7.

[0080] The XRF detection system provided in this embodiment realizes automated vacuum detection, which not only improves detection accuracy and detection efficiency, but also reduces the impact of human factors on the detection process and detection results, and is suitable for wide promotion and use.

[0081] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. XRF detection system, characterized in that, include: XRF detector (1); A detection box (2), the detection box (2) being provided with a receiving cavity (21) and a first through hole (231), the XRF detector (1) being arranged in the receiving cavity (21), and the detection part of the XRF detector (1) facing the first through hole (231); A material box assembly (3), the material box assembly (3) comprising a material box (31), the material box (31) being provided with a receiving groove (311), the detection material being able to be placed at the bottom of the receiving groove (311), the notch of the receiving groove (311) being directly opposite to the first through hole (231), the edge of the receiving groove (311) being able to be sealed and pressed against the edge of the first through hole (231), so that the receiving groove (311) is in sealed communication with the receiving cavity (21) through the first through hole (231); A vacuum pump (4), wherein at least one of the accommodating chamber (21) and the accommodating groove (311) is connected to a suction end of the vacuum pump (4).

2. The XRF detection system according to claim 1, characterized in that: The XRF detection system further comprises a driving unit (5), the driving unit (5) comprising a first support member (51) and a driving assembly (52), the fixed end of the driving assembly (52) being arranged on the first support member (51), the driving end of the driving assembly (52) being drivingly connected to a side of the material box (31) facing away from the detection box (2), and the driving direction of the driving assembly (52) being parallel to the axial direction of the first through hole (231).

3. The XRF detection system according to claim 2, characterized in that: The material box assembly (3) further comprises a first elastic member (32), and the driving end of the driving assembly (52) is elastically connected to the material box (31) via the first elastic member (32).

4. The XRF detection system according to claim 3, characterized in that: The material box assembly (3) further comprises a support box (33), a fixed seat (34) and a movable seat (35); the support box (33) is provided with an open cavity (331); the opening of the open cavity (331) is arranged toward the detection box (2); the fixed seat (34) is fixed in the open cavity (331); a concave platform (341) is provided on a side of the fixed seat (34) facing the detection box (2); the movable seat (35) is provided with a first limiting groove (351); and the two ends of the first elastic member (32) are respectively embedded in the first cavity (331). The driving end of the driving assembly (52) is arranged in the recessed platform (341) and the first limiting groove (351), and is connected to the side of the supporting box (33) facing away from the fixed seat (34). The material box (31) is connected to the side of the movable seat (35) facing away from the first elastic member (32). When the edge of the accommodating groove (311) is not sealed and pressed against the edge of the first through hole (231), the side of the material box (31) provided with the accommodating groove (311) protrudes out of the opening (331).

5. The XRF detection system according to claim 4, characterized in that: The first elastic member (32) has a first compression state and a second compression state. When the first elastic member (32) is in the first compression state, the edge of the accommodating groove (311) is sealed and pressed against the edge of the first through hole (231), and the edge of the opening of the opening cavity (331) is spaced apart from the detection box (2). When the first elastic member (32) is in the second compression state, the edge of the accommodating groove (311) is sealed and pressed against the edge of the first through hole (231), and the edge of the opening of the opening cavity (331) is sealed and pressed on the side of the detection box (2) facing the material box (31).

6. The XRF detection system according to claim 5, characterized in that: The driving assembly (52) comprises a driving member (521) and a second elastic member (522); a fixed end of the driving member (521) is arranged on the first supporting member (51); and the driving end of the driving member (521) is elastically connected to the supporting box (33) via the second elastic member (522).

7. The XRF detection system according to claim 6, characterized in that: The driving assembly (52) further comprises a transmission member (523), one end of the transmission member (523) being connected to a side of the supporting box (33) facing away from the fixing seat (34), and the other end of the transmission member (523) being provided with a second limiting groove, the second elastic member (522) being inserted into the second limiting groove, and the two ends of the second elastic member (522) being respectively connected to the groove bottom of the second limiting groove and the driving end of the driving member (521).

8. The XRF detection system according to any one of claims 4 to 7, characterized in that: The material box assembly (3) further comprises a limiting cylinder (36), wherein the limiting cylinder (36) is sleeved on the fixed seat (34) and fixed in the opening cavity (331), and the movable seat (35) is movably inserted into the limiting cylinder (36) along the axial direction of the limiting cylinder (36).

9. The XRF detection system according to any one of claims 4 to 7, characterized in that: The material box (31) is detachably connected to a side of the movable seat (35) facing away from the first elastic member (32).

10. The XRF detection system according to any one of claims 4 to 7, characterized in that: One of the side of the material box (31) facing the movable seat (35) and the side of the movable seat (35) facing the material box (31) is provided with a protrusion (312), and the other is provided with an insertion hole, and the protrusion (312) is detachably inserted into the insertion hole.

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