Automated pressure sample testing device for simultaneous testing of powder materials

Abstract

The present application discloses an automated sample pressing detection device for synchronous detection of powder materials, which relates to the technical field of analysis and detection. A control unit controls a quantitative feeding unit, a drying unit, a screening unit, a sample pressing unit, a material transfer unit, a first analysis and detection unit, and a second analysis and detection unit to realize automated LIBS analysis and detection and XRF analysis and detection processing of powder materials, thereby eliminating the need for manual participation in the pretreatment process of powder materials, improving the analysis and detection efficiency, and the pretreated powder materials can be collaboratively detected by LIBS and XRF, and the obtained analysis and detection results can be complementary, thereby ensuring the stability and consistency of the detection results.

Description

Technical Field

[0001] The present application relates to the technical field of analysis and detection, and in particular to an automated sample pressing detection device for synchronous detection of powder materials. Background Art

[0002] XRF detection (X-ray fluorescence spectrometry) is a method to determine the type and content of trace elements in a substance. LIBS (Laser-Induced Breakdown Spectroscopy) is a non-contact, almost non-destructive, fast and highly sensitive spectral analysis technology that can identify the type of elements and their corresponding content in a sample, thereby realizing the identification, classification, qualitative and quantitative analysis of materials. XRF technology and LIBS technology can be widely used in the analysis of the composition of non-ferrous metal materials.

[0003] The applicant found that the elemental composition information test results of the same material by LIBS and XRF can achieve collaborative testing in the laboratory with shared samples, stable test data, and complementary accuracy. However, in the relevant technology, LIBS detection and XRF analysis technology are carried out in two steps, and the compression test of non-ferrous metal samples is mostly carried out in the laboratory. The pre-treatment process of the materials involved is generally manually operated by researchers. This has poor step-by-step detection efficiency and is bound to increase the impact of human factors on the consistency of pre-treatment of metal-containing sample materials. Summary of the invention

[0004] The embodiment of the present application provides an automated sample pressing detection device for synchronous detection of powder materials, which can solve the technical problems in the related art of poor detection efficiency and the influence of human factors on the consistency of pretreatment of metal-containing sample materials.

[0005] The embodiment of the present application provides an automated sample pressing detection device for synchronous detection of powder materials, comprising a cabinet and a control unit, a quantitative feeding unit, a drying unit, a screening unit, a sample pressing unit, a material transfer unit, a first analysis and detection unit, and a second analysis and detection unit arranged inside the cabinet;

[0006] The quantitative feeding unit is used to quantitatively transport the powder to the drying unit for drying;

[0007] The screening unit is connected to the drying unit and is used to screen the powder dried by the drying unit to obtain a first powder with a preset particle size;

[0008] The material transfer unit is connected with the screening unit and is used to receive the first powder material. The material transfer unit can move in a horizontal direction to have a first analysis and detection position, a second analysis and detection position, a material receiving position and a sample pressing position sequentially arranged along the moving direction of the material transfer unit.

[0009] When the material transfer unit is in the sample pressing position, the sample pressing unit can press the powder on the material transfer unit;

[0010] When the material transfer unit is in the second detection position, the second analysis and detection unit can perform LIBS analysis and detection on the powder material after the mold on the material transfer unit;

[0011] When the material transfer unit is in the first detection position, the first analysis and detection unit can perform XRF analysis and detection on the powder material after the mold on the material transfer unit;

[0012] The control unit is communicatively connected with the quantitative feeding unit, the drying unit, the screening unit, the sample pressing unit, the material transfer unit, the first analysis and detection unit, and the second analysis and detection unit.

[0013] In some embodiments, the material transfer unit includes a pressing die, and the pressing die includes:

[0014] The outer mold, the core mold and the damping member are provided. The outer mold is provided with a pressing hole which penetrates in the vertical direction. One end of the core mold is slidably connected with the inner wall of the pressing hole, and the other end extends out of the pressing hole. The damping member is arranged between the outer mold and the core mold to limit the sliding of the core mold.

[0015] In some embodiments, the material transfer unit further comprises:

[0016] A first horizontal driving mechanism is disposed in the cabinet; and

[0017] The clamping mechanism is connected with the horizontal driving mechanism, and the clamping mechanism can clamp or release the pressing die.

[0018] In some embodiments, the first analysis and detection unit includes a box body, a detection cavity is formed in the box body, and a detection port connected to the detection cavity is opened on the box body, and the sample compression detection device also includes:

[0019] The partition unit is formed with an installation cavity. The partition unit is movably arranged at the lower side of the first analysis and detection unit in the vertical direction. When the material transfer unit is in the first analysis and detection position, the partition unit can support the pressing mold, and the installation cavity forms a sealed cavity with the detection cavity through the detection port, and the pressing mold is located in the sealed cavity.

[0020] In some embodiments, the sample pressing unit includes a sample pressing mechanism, a demoulding mechanism, and a reset mechanism arranged in sequence along a horizontal direction, and the reset mechanism is closer to the first analysis and detection unit than the sample pressing mechanism;

[0021] Among them, the pressing mechanism can press the powder on the material transfer unit, the demoulding mechanism can remove the powder after pressing, and the resetting mechanism can reset the core mold.

[0022] In some embodiments, the quantitative feeding unit includes:

[0023] A second horizontal driving mechanism is disposed in the cabinet; and

[0024] A loading box is connected to the second horizontal driving mechanism, the loading box has a first position and a second position, and the loading box has a loading bin and a discarding bin;

[0025] Wherein, when the feeding box is in the first position, the feeding bin is used to receive the powder, and when the feeding box is in the second position, the feeding bin is used to transport the powder to the drying unit.

[0026] In some embodiments, the drying unit comprises:

[0027] A first pipeline, the first pipeline is used to receive the powder delivered by the quantitative feeding unit;

[0028] a heating mechanism, fixed relative to the first pipe and used for heating the first pipe; and

[0029] The first spiral feeding mechanism is arranged in the first pipeline and is used for driving the material in the first pipeline to move back and forth in the horizontal direction.

[0030] In some embodiments, the screening unit comprises:

[0031] The second pipeline extends in the horizontal direction and has a feed opening at its lower side;

[0032] The screen is cylindrical and is arranged in the second pipe in a horizontal direction; and

[0033] The second spiral feeding mechanism is arranged in the screen and is used for driving the material in the screen to move back and forth in the horizontal direction.

[0034] In some of the embodiments, a second spiral feeding mechanism is installed at one end of the third pipeline, and a discharge port is opened at the other end of the third pipeline.

[0035] In some embodiments, the compression sample detection device further comprises:

[0036] A first transfer hopper, which is arranged between the drying unit and the screening unit to transport the powder dried by the drying unit to the screening unit;

[0037] Wherein, the first transfer hopper is rotatably arranged on the cabinet body around the axis of the first transfer hopper, and the axis is parallel to the vertical direction.

[0038] Based on the automated sample pressing detection device for simultaneous detection of powders in the embodiment of the present application, the quantitative feeding unit, the drying unit, the screening unit, the sample pressing unit, the material transfer unit, the first analysis and detection unit and the second analysis and detection unit are controlled by the control unit to realize automated LIBS analysis and detection and XRF analysis and detection processing of the powders, thereby eliminating manual participation in the pretreatment process of the powders and improving the analysis and detection efficiency. The pretreated powders can be collaboratively detected by LIBS and XRF, and the obtained analysis and detection results can be complementary, thereby ensuring the stability and consistency of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 A schematic diagram of the structure of an automated sample pressing detection device for synchronous detection of powder materials provided in an embodiment of the present application;

[0041] Figure 2 for Figure 1 A schematic structural diagram of another perspective of the structure shown;

[0042] Figure 3 A schematic diagram of the structure of a quantitative feeding unit provided in an embodiment of the present application;

[0043] Figure 4 A schematic diagram of the structure of a drying unit provided in an embodiment of the present application;

[0044] Figure 5 A schematic diagram of the structure of the screening unit and the pushing unit provided in the embodiment of the present application;

[0045] Figure 6 A schematic diagram of the structure of the auxiliary quantitative feeding unit provided in the embodiment of the present application;

[0046] Figure 7 for Figure 6 A schematic structural diagram of another perspective of the structure shown;

[0047] Figure 8 A schematic diagram of the structure of a material transfer unit provided in an embodiment of the present application;

[0048] Fig. 9 A schematic diagram of the structure of the pressing die provided in the embodiment of the present application;

[0049] Fig.10A schematic diagram of the structure of the sample pressing unit and the partition unit provided in the embodiment of the present application.

[0050] Reference numerals in the figures:

[0051] 1000, cabinet; 1100, first mounting plate; 1100a, first opening; 1100b, second opening; 1200, first discard pipe; 1300, second discard pipe; 1400, second mounting plate; 1400a, third opening; 1400b, fourth opening; 1500, rack;

[0052] 10. quantitative feeding unit; 11. second horizontal driving mechanism; 12. feeding box; 12a. feeding bin; 12b. first discarded bin;

[0053] 20. Drying unit; 21. First pipeline; 22. First bolt feeding mechanism;

[0054] 30. First transfer hopper;

[0055] 40. Screening unit; 41. Second pipeline; 41a. Feeding port; 41b. Discharging port; 42. Second spiral feeding mechanism;

[0056] 50. Pushing unit; 51. Pushing mechanism; 52. Three-way pipe;

[0057] 60. Second transfer hopper;

[0058] 70. Auxiliary quantitative feeding unit; 71. Pushing mechanism; 72. Material receiving box; 72a. Material receiving bin; 72b. Second waste bin;

[0059] 80. Material transfer unit; 81. Pressing die; 811. External die; 812. Core die; 811a. Pressing hole; 813. Annular wing ear; 82. First horizontal driving mechanism; 83. Clamping mechanism;

[0060] 90, sample pressing unit; 91, sample pressing mechanism; 911, lifting drive member; 912, bottom support; 913, upper pressing head; 914, elastic member; 92, demoulding mechanism; 921, demoulding top column; 93, reset mechanism; 931, reset vertical plate;

[0061] 100. A first analysis and detection unit;

[0062] 200. A second analysis and detection unit;

[0063] 300, partition unit; 301, lifting mechanism; 302, cover shell; 303, boss. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0065] The purpose of the present application is to provide an automated sample pressing detection device for simultaneous detection of powder materials, so as to solve the problems existing in the prior art, realize automated pretreatment and analytical detection of powder materials, improve the consistency and stability of sample processing, reduce human interference, save labor costs and time costs, and be convenient and fast. The pretreated powder materials can be analyzed and detected by LIBS and XRF in turn, and the obtained test results can be coordinated, thereby improving the accuracy of the test results.

[0066] See also Figure 1 as well as Figure 2 The embodiment of the present application provides an automated sample pressing detection device for synchronous detection of powder materials, including a cabinet 1000 and a control unit, a quantitative loading unit 10, a drying unit 20, a screening unit 40, a sample pressing unit 90, a material transfer unit 80, a first analysis and detection unit 100, and a second analysis and detection unit 200 arranged inside the cabinet 1000.

[0067] The cabinet 1000 serves as the protection and support structure of the entire automated sample pressing detection device. It has good sealing and dustproof properties and can be placed in the pretreatment process. Metal-containing dust will drift outside the cabinet 1000 and cause environmental pollution. The cabinet 1000 includes a main body and a cabinet door. The cabinet door can be opened and closed relative to the main body, which can facilitate the user to debug and repair the internal units. It can be understood that a transparent window can also be provided on the cabinet door so that when the cabinet door is closed, the operation of each unit in the cabinet 1000 can be observed through the transparent window.

[0068] The quantitative feeding unit 10 is used to obtain a quantitative amount of powder. Through precise measurement, a certain amount of powder is sent to the subsequent processing unit, which helps to ensure that the sample size for each test is roughly equal or basically equal, improve the accuracy of the test results, and minimize the impact of factors such as different particle size or density on the test accuracy.

[0069] A certain amount of powder is conveyed to the drying unit 20 for drying. Drying at a preset temperature for a certain period of time can remove a large proportion of moisture in the material, thereby reducing the influence of moisture on the detection accuracy of the first analysis and detection unit 100 and the second analysis and detection unit 200.

[0070] The screening unit 40 is connected to the drying unit 20, and is used to screen the powder dried by the drying unit 20 to obtain a first powder of a preset particle size. The sieved first powder can meet the pressing requirements of the subsequent pressing unit 90, avoiding the larger particle size affecting the consistency and uniformity of the powder.

[0071] The material transfer unit 80 is connected with the screening unit 40 and is used to receive the first powder. The material transfer unit 80 can move in the horizontal direction to have a first analysis and detection position, a second analysis and detection position, a material receiving position and a sample pressing position arranged in sequence along the moving direction of the material transfer unit 80.

[0072] When the material transfer unit 80 is in the sample pressing position, the sample pressing unit 90 can press the powder on the material transfer unit 80;

[0073] When the material transfer unit 80 is in the second detection position, the second analysis and detection unit 200 can perform LIBS analysis and detection on the powder material after the molding on the material transfer unit 80;

[0074] When the material transfer unit 80 is in the first detection position, the first analysis and detection unit 100 can perform XRF analysis and detection on the powder material after the compression molding on the material transfer unit 80;

[0075] In the embodiment of the present application, by moving the material transfer unit 80 in the horizontal direction, rapid switching between different positions is achieved, thereby completing material receiving, sample pressing, LIBS analysis and detection, and XRF analysis and detection. There is no need to cooperate with other mechanical grasping equipment and transfer units. Switching of various positions can be achieved, and it can cooperate with other units, thereby reducing detection time and improving overall detection efficiency.

[0076] The control unit is communicatively connected with the quantitative feeding unit 10, the drying unit 20, the screening unit 40, the sample pressing unit 90, the material transfer unit 80, the first analysis and detection unit 100 and the second analysis and detection unit 200. The control unit may include a programmable controller with a built-in program, which controls each independent unit to operate in sequence according to a time sequence, and finally realizes automated XRF analysis and detection and LIBS analysis and detection of metal-containing solid powder, and obtains the element type and content information of the metal-containing solid powder.

[0077] During the pretreatment process, the control unit can control the operation of each unit and monitor the working status of each unit, including powder metering, drying temperature and time, screening time, sample pressing time, and analysis and detection of the first analysis and detection unit 100 and the second analysis and detection unit 200.

[0078] Optionally, the control unit is an external power supply access point of the sample pressing detection device, and is also an output point of the power supply of each independent unit in the cabinet 1000.

[0079] The control unit can automatically perform quantitative feeding, drying, screening, sample pressing and analysis and testing. The automated testing process reduces the number of manual operations, thereby reducing errors caused by human factors, while also improving the efficiency of analysis and testing.

[0080] See also Figure 2 as well as Figure 3 , wherein the quantitative loading unit 10 is arranged at the upper end of the cabinet 1000, the quantitative loading unit 10 may include a second horizontal driving mechanism 11 and a loading box 12, the second horizontal driving mechanism 11 is arranged in the cabinet 1000, the loading box 12 is connected to the second horizontal driving mechanism 11, the loading box 12 has a first position and a second position, the loading box 12 has a loading bin 12a and a first discard bin 12b.

[0081] There is a loading hopper on the top of the cabinet 1000, and the loading port of the loading hopper is located outside the cabinet 1000, and the unloading port 41a of the loading hopper is located inside the cabinet 1000. There is a first mounting plate 1100 inside the cabinet 1000 to install the second horizontal driving mechanism 11 and to carry the loading box 12. In the specific loading process, the second horizontal driving mechanism 11 drives the loading box 12 to be in the first position. At this time, the loading bin 12a is directly opposite to the unloading end of the upper hopper. When the user loads the material through the upper hopper, the powder material will first be concentrated in the loading bin 12a, and the excess powder material will overflow from the loading bin 12a to the first waste bin 12b. In this process, the material located in the loading bin 12a is a quantitative material.

[0082] The first mounting plate 1100 is provided with a first opening 1100a and a second opening 1100b, and the bottom of the loading bin 12a and the bottom of the first waste bin 12b are also openings. When in the first position, the first opening 1100a of the first mounting plate 1100 is offset from the opening at the bottom of the loading bin 12a, and the second opening 1100b of the first mounting plate 1100 is connected to the bottom opening of the first waste bin 12b, and the second opening 1100b can be connected to the first waste pipe 1200 and extend outside the cabinet 1000 for subsequent centralized processing.

[0083] The second horizontal driving mechanism 11 can push the loading box 12 to switch between the first position and the second position. In the second position, the opening at the bottom of the loading bin 12a is opposite to the first opening 1100a, and a drying unit 20 is arranged below the first opening 1100a. In this way, a certain amount of material in the loading bin 12a can be transported to the drying unit 20, thereby completing the transfer of a certain amount of powder.

[0084] In the embodiment of the present application, quantitative loading is possible by limiting the volume of the loading bin 12a, without weighing the powder in the loading hopper, and excess powder can also be discharged through the first discard pipe 1200, thereby improving the efficiency of quantitative loading.

[0085] In some embodiments, see Figure 4 The drying unit 20 includes a first pipe 21, a heating mechanism and a first spiral feeding mechanism 22. One end of the first pipe 21 is an open structure, and the other end is equipped with the first spiral feeding mechanism 22. The side wall of the first pipe 21 can also be provided with a notch to receive the powder delivered by the quantitative feeding unit 10, and can also be directly delivered to the first pipe 21 through the opening structure at one end of the first pipe 21.

[0086] Optionally, the heating mechanism can be arranged on the outer wall of the first pipe 21 in the form of an electric heating plate, the control unit can heat the temperature and the heating time, the first spiral feeding mechanism 22 can rotate forward and reverse, the forward rotation is to push the powder to the end away from the opening structure, and the reverse rotation is to push the powder to the end close to the opening structure. Through the forward rotation of the first spiral feeding mechanism 22, the heating time of the powder in the first pipe 21 can be controlled, and the forward rotation of the first spiral feeding mechanism 22 can also keep the powder in a moving state at all times, thereby ensuring sufficient heating of the powder and removing a large proportion of moisture in the powder, so as to reduce the influence of moisture on the detection accuracy of subsequent XRF and LIBS detection and analysis.

[0087] By providing the first spiral feeding mechanism 22 and the heating plate, the powder can be fully heated, and during the heating process, the powder can be automatically unloaded, which reduces manual intervention and improves work efficiency.

[0088] It can be understood that the heating plate heats the first pipe 21 according to the temperature set by the control unit. At the same time, a temperature sensor for feeding back the temperature of the first pipe 21 is also attached to the outside of the first pipe 21 to feed back the temperature value of the first pipe 21 to the control unit in real time, thereby forming feedback control of the temperature of the first pipe 21.

[0089] Please return to Figure 2 In the embodiment of the present application, a first transfer hopper 30 is provided between the drying unit 20 and the screening unit 40 , so that the dried powder can be quickly transferred to the screening unit 40 .

[0090] The inventors found that the powder after drying still has a certain degree of stickiness, and some of the powder may stick to the side wall of the first transfer hopper 30, making it difficult to slide down under the action of gravity. Therefore, in an embodiment of the present application, the first transfer hopper 30 is rotatable around the axis of the first transfer hopper 30 and is arranged in the cabinet 1000, and the axis is parallel to the vertical direction.

[0091] Optionally, the first transfer hopper 30 can rotate under the action of a driving mechanism. In one embodiment, the driving mechanism may include a motor and a gear. A rack is provided on the first transfer hopper 30. The gear is meshed with the rack, and the gear is driven to rotate by the motor, thereby driving the rack to move, and then driving the first transfer hopper 30 to rotate.

[0092] In some other possible embodiments, the driving mechanism may include a motor, a pulley and a belt, and the outer wall of the first transfer hopper 30 is also formed with a pulley structure. The belt connects the pulley and the first transfer hopper 30, and the pulley is driven to rotate by the motor. Under the action of the belt transmission, the first transfer hopper 30 can also be driven to rotate.

[0093] The rotation of the first transfer hopper 30 can generate centrifugal force, so that the powder attached to the side wall of the first transfer hopper 30 can fall to the screening unit 40 below, avoiding the attached powder from mixing with the powder to be tested subsequently, thereby affecting the detection accuracy of the powder.

[0094] Since the dried powder still has a certain viscosity, the conical first transfer hopper 30 can also prevent the dried powder from falling outside the first transfer hopper 30, thereby accumulating at the operation point of each unit, which may affect the normal use of the machine. At the same time, in the embodiment of the present application, the first transfer hopper 30 and the drying unit 20 have a certain height difference, so the dried powder will also be broken when it falls into the first transfer hopper 30, which is convenient for the subsequent screening by the screening unit 40.

[0095] In some embodiments, see Figure 5 The screening unit 40 includes a second pipe 41, a screen and a second spiral feeding mechanism 42. The second pipe 41 extends in the horizontal direction and has a discharge port 41a at its lower side. The screen is cylindrical and is arranged in the second pipe 41 in the horizontal direction. The second spiral feeding mechanism 42 is arranged in the screen to drive the material in the screen to move back and forth in the horizontal direction.

[0096] The second pipe 41 and the screen both have an open structure at one end, so that the powder in the first transfer hopper 30 can pass through the opening structure into the screen. At the same time, the opening structure of the second pipe 41 also forms a discharge port 41b. The other end of the second pipe 41 is installed with a second spiral feeding mechanism 42, and the second spiral feeding mechanism 42 can also rotate forward and reverse. Through forward rotation, the powder in the screen will move toward the end away from the opening structure. Through reverse rotation, the powder in the screen will move toward the end close to the opening structure. Under the continuous alternation of forward and reverse rotation, the powder can move back and forth, thereby improving the screening efficiency. During this screening process, powder with smaller particle size can pass through the screen and the discharge port 41a of the second pipe 41 and fall to the outside of the second pipe 41, and fall into the material transfer unit 80 below.

[0097] The forward and reverse rotation of the second spiral feeding mechanism 42 in the screen realizes the reciprocating motion of the material in the screen. Compared with static screening, this dynamic screening method can more effectively promote the contact between the material and the screen, increase the screening opportunities, and thus significantly improve the screening efficiency. The powder remaining in the screen can be discharged through the discharge port 41b of the second pipe 41 under the reversal of the second spiral feeding mechanism 42. In some embodiments, a second waste pipe 1300 can be set to collect excess waste discharged through the discharge port 41b of the second pipe 41.

[0098] Please continue reading Figure 5 In order to facilitate the dried powder to enter the screen more easily, the embodiment of the present application is also provided with a pushing unit 50, which includes a pushing mechanism 51 and a three-way pipe 52. The three-way pipe 52 has a first channel distributed in the vertical direction and a second channel distributed in the horizontal direction. The first channel is arranged below the first transfer hopper 30, for receiving the dried powder and further falling into the second channel. The pushing mechanism 51 is arranged in the second channel, and the second channel extends into the screen. The pushing mechanism 51 can push the powder in the second channel into the screen for screening.

[0099] For powders from different batches, after quantitative feeding, drying and screening, the amount of the first powder obtained cannot be guaranteed to be the same or roughly the same. In order to further improve the accuracy of the test and avoid interference with the final analysis and test results of the powder due to different amounts of the first powder, please return to refer to Figure 1 as well as Figure 2 , and see Figure 6 In the embodiment of the present application, a second transfer hopper 60 and an auxiliary quantitative loading unit 70 may also be provided. The second transfer hopper 60 is mainly used to transfer the first powder material after screening.

[0100] The auxiliary quantitative feeding unit 70 includes a pushing mechanism 71 and a receiving box 72. The cabinet 1000 has a second mounting plate 1400, which can support the pushing mechanism 71 and the receiving box 72. The receiving box 72 has a mutually independent receiving bin 72a and a second discarding bin 72b, and the bottoms of the receiving bin 72a and the second discarding bin 72b are also provided with openings, and the second mounting plate 1400 has a third opening 1400a and a fourth opening 1400b, such as Figure 7 shown.

[0101] Under the pushing action of the pushing mechanism 71, the material receiving box 72 can also move horizontally and has a first position and a second position. In the first position, the material receiving bin 72a is misaligned with the third opening 1400a, and the first powder material dropped through the second transfer hopper 60 can fall into the material receiving bin 72a and be supported by the second mounting plate 1400. After the material receiving bin 72a is full, the excess first powder material can overflow into the adjacent second waste bin 72b. The second waste bin 72b is connected to the fourth opening 1400b. A waste box can be set under the second mounting plate 1400, and the waste material dropped through the fourth opening 1400b can be received by the waste box, so as to avoid causing environmental pollution in the cabinet 1000 and affecting the normal operation of the entire device.

[0102] The pushing mechanism 71 pushes the material receiving box 72, so that the material receiving box 72 moves from the first position to the second position. At this time, the opening of the material receiving bin 72a is connected to the third opening 1400a, and the quantitative first powder in the material receiving bin 72a can fall into the material transfer unit 80 below through the third opening 1400a. In this way, the consistency of the first powder received by the material transfer unit 80 can be ensured, thereby improving the consistency and accuracy of the results obtained by subsequent LIBS analysis and XRF analysis on the first powder.

[0103] Optionally, the pushing mechanism 71 may be a cylinder, or a servo slide or other structure in the prior art, which will not be further explained here.

[0104] In some embodiments, see Figure 8 as well as Fig. 9 The material transfer unit 80 includes a pressing mold 81, which includes an outer mold 811, a core mold 812 and a damping member. The outer mold 811 is provided with a pressing hole 811a which passes through in a vertical direction. One end of the core mold 812 is slidably connected to the inner wall of the pressing hole 811a, and the other end extends out of the pressing hole 811a. The damping member is arranged between the outer mold 811 and the core mold 812 to limit the sliding of the core mold 812.

[0105] The first powder falling through the third opening 1400a can fall into the pressing hole 811a, and the core mold 812 includes a support plate and a support column connected to each other, and the support plate and the support column are in a "T" shape as a whole, and a damping member is arranged between the inner side of the outer mold 811 and the support column, and the damping member is installed between the support column, the support plate and the outer mold 811. Through the damping member, the core mold 812 and the outer mold 811 can maintain a relative position, and the core mold 812 and the outer mold 811 can move relative to each other only when a certain force is applied. In this way, after the first powder is detected, it is convenient to take the first powder out of the pressing hole 811a.

[0106] Optionally, the damping is mechanical damping or other damping in products currently on the market, which is not limited here.

[0107] See also Fig.10 A frame 1500 is arranged in the cabinet 1000, and the sample pressing unit 90 includes a sample pressing mechanism 91, a demolding mechanism 92 and a reset mechanism 93 which are arranged in sequence along the horizontal direction. The sample pressing mechanism 91, the demolding mechanism 92 and the reset mechanism 93 are all installed on the frame 1500, and the reset mechanism 93 is closer to the first analysis and detection unit 100 than the sample pressing mechanism 91.

[0108] The pressing mechanism 91 can press the powder on the material transfer unit 80. The pressing mechanism 91 includes a lifting drive member 911, a bottom support 912, and an upper pressing head 913. The upper pressing head 913 is fixed relative to the frame 1500. Figure X , an annular wing ear 813 is provided on the top of the outer mold 811, and an elastic member 914 is provided on the bottom support 912. The elastic member 914 is used to press the outer mold 811 against the upper pressure head 913 through the annular wing ear 813 during the powder pressing process. Specifically, during the pressing process, the elastic member 914, driven by the rise of the bottom support 912, first supports the annular wing ear 813, and drives the elastic member 914 to make the upper surface of the outer mold 811 abut against the upper pressure head 913, and the elastic member 914 will be compressed. Under the action of the elastic restoring force of the elastic member 914, a pre-pressure will be formed between the outer mold 811 and the upper pressure head 913. The pre-pressure can ensure the stability of the position of the sample pressing mold during the process of the lifting drive member 911 driving the bottom support 912 to apply pressure to the sample pressing mold. At the same time, after the pressing is completed, the pre-pressure will be slowly released during the pressure release process, thereby improving the stability of the pressing.

[0109] Optionally, the lifting drive member 911 adopts hydraulic lifting or cylinder lifting, and the elastic member 914 can adopt a spring, rubber, a spring buffer, etc.

[0110] Please continue reading Fig.10 The demoulding mechanism 92 includes a demoulding top column 921 and a demoulding pressure column (not shown in the figure). The demoulding top column 921 is installed on the bottom support 912, and the demoulding pressure column is relatively fixed on the frame 1500. The lifting drive 911 drives the bottom support 912 to rise, so that the demoulding pressure column presses against the annular wing ear 813, and the demoulding top column 921 presses against the other end of the core mold 812 to realize the demoulding of the powder. After the demoulding is completed, the lifting drive 911 drives the bottom support 912 to reset. The demoulding mechanism 92 has a simple structure and good demoulding reliability.

[0111] Due to the presence of the damping member, after the demolding mechanism 92 completes demolding, the core mold 812 does not descend, and the pressed powder is supported outside the pressing hole 811a. In this way, when the material transfer unit 80 moves, the second mounting plate 1400 can come into contact with the powder, thereby scraping the powder off and dropping it into the waste material box below, and then reset under the action of the reset mechanism 93, waiting for the next pressing test. The entire device can realize automated pretreatment, testing, and unloading of metal-containing powder without manual intervention, which can greatly improve the consistency and accuracy of the test.

[0112] Please continue reading Fig.10 The reset mechanism 93 includes a reset pin (not shown in the figure) and a reset plate 931. The reset pin is relatively fixed on the frame 1500, and the reset plate 931 is installed on the bottom support 912. The reset plate 931 and the reset pin are arranged opposite to each other. After demoulding is completed, the material transfer unit 80 drives the pressing mold 81 to move there, and the lifting drive member 911 drives the bottom support 912 to rise. The reset plate 931 is supported on the annular wing ear 813. When the bottom support 912 continues to rise, the reset pin can push against the core mold 812 and gradually extend into the pressing hole 811a, thereby realizing the reset of the core mold 812. When the reset is completed, the lifting drive member 911 drives the bottom support 912 to reset. The whole process is realized by the lifting drive member 911, and no manual reference is required, and the degree of automation is high.

[0113] See also Fig. 9 The material transfer unit 80 also includes a first horizontal driving mechanism 82 and a clamping mechanism 83. The first horizontal driving mechanism 82 is arranged in the cabinet 1000. The clamping mechanism 83 is connected to the horizontal driving mechanism. The clamping mechanism 83 includes two clamping arms that can be relatively close to or far away. The clamping arms can stably clamp the outer mold 811 to avoid the outer mold 811 from deflecting or shaking during the powder receiving process, so that the powder falls outside the pressing hole 811a, thereby ensuring the consistency and accuracy of the detection.

[0114] Optionally, the first horizontal driving mechanism 82 may adopt a driving mechanism such as a cylinder, a servo slide, etc., and no further limitation is made here.

[0115] Since the outer mold 811 needs to move relative to the clamping mechanism 83 during the pressing, demolding and resetting processes, in order to guide the lifting and lowering of the outer mold 811, the material transfer unit 80 may also include a guide sleeve, which is installed at the first horizontal driving mechanism 82 and has a notch so that the outer mold 811 can horizontally detach from the guide sleeve from the notch, and the outer mold 811 can be sleeved on the guide sleeve, cooperating with the clamping mechanism 83 to clamp the outer mold 811, the stability of the pressing mold at the first analysis and detection position, the second analysis and detection position, the material receiving position and the pressing position can be ensured, thereby ensuring the stability of the detection results.

[0116] It should be understood that in the embodiment of the present application, the material transfer unit 80 first drives the first powder to be pressed, and after the pressing is completed, LIBS analysis and XRF analysis are performed, and finally the first powder passes through the demolding mechanism 92.

[0117] It should be understood that when performing XRF analysis on powder, it may be disturbed by the ambient air, affecting the accuracy of the analysis. Fig.10 A partition unit 300 is also provided, through which a vacuum is formed with the first analysis and detection unit 100, thereby reducing the influence of external ambient air on the detection.

[0118] Specifically, the partition unit 300 is formed with an installation cavity, and the partition unit 300 is movably arranged in the vertical direction at the lower side of the first analysis and detection unit 100. When the material transfer unit 80 is in the first analysis and detection position, the partition unit 300 can support the pressing mold 81, and the installation cavity forms a sealed cavity with the detection cavity through the detection port, and the pressing mold 81 is located in the sealed cavity.

[0119] The first analysis and detection unit 100 includes a box body, a detection cavity is formed in the box body, and a detection port connected to the detection cavity is opened on the box body. An XRF detector is also arranged in the detection cavity.

[0120] The partition unit 300 includes a lifting mechanism 301 and a cover shell 302. The cover shell 302 forms an installation cavity. The bottom wall of the installation cavity is provided with a boss 303. The boss 303 is provided with an installation groove. When the material transfer unit 80 moves to the first detection position, that is, the XRF detection position, the lifting mechanism 301 rises, so that the core mold 812 is inserted into the installation groove. At this time, the clamping mechanism 83 releases the clamping of the outer mold 811, and is driven by the first horizontal driving mechanism 82 to break away from the rising area of ​​the cover shell 302. The lifting mechanism 301 rises, which can make the upper edge of the cover shell 302 press against the lower side wall of the box body and cover the detection port. Then, the detection cavity is evacuated through the vacuum negative pressure mechanism, so that a vacuum environment can be obtained, so that the powder material is not easily affected by the external environment during XRF detection, thereby improving the accuracy of detection.

[0121] After the detection is completed, the lifting mechanism 301 descends, and the clamping mechanism 83 returns to its original position under the action of the first horizontal driving mechanism 82, and then the clamping mechanism 83 clamps the outer mold 811 again to ensure stability.

[0122] Optionally, the lifting mechanism 301 may be a cylinder or a hydraulic cylinder, and a sealing strip may be provided on the upper edge of the cover shell 302 to improve the sealing effect.

[0123] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application 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. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0124] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An automated sample pressing detection device for synchronous detection of powder materials, characterized in that: It includes a cabinet body and a control unit, a quantitative feeding unit, a drying unit, a screening unit, a sample pressing unit, a material transfer unit, a first analysis and detection unit and a second analysis and detection unit arranged inside the cabinet body; The quantitative feeding unit is used to quantitatively transport the powder to the drying unit for drying; The screening unit is connected to the drying unit and is used to screen the powder dried by the drying unit to obtain a first powder with a preset particle size; The material transfer unit is connected with the screening unit and is used to receive the first powder material. The material transfer unit can move in a horizontal direction to have a first analysis and detection position, a second analysis and detection position, a material receiving position and a sample pressing position arranged in sequence along the moving direction of the material transfer unit; When the material transfer unit is in the sample pressing position, the sample pressing unit can perform compression molding on the powder on the material transfer unit; When the material transfer unit is in the second detection position, the second analysis and detection unit can perform LIBS analysis and detection on the powder material after the molding on the material transfer unit; When the material transfer unit is in the first detection position, the first analysis and detection unit can perform XRF analysis and detection on the powder material after the mold on the material transfer unit; The control unit is in communication connection with the quantitative feeding unit, the drying unit, the screening unit, the sample pressing unit, the material transfer unit, the first analysis and detection unit, and the second analysis and detection unit; The material transfer unit includes a pressing die, a first horizontal driving mechanism and a clamping mechanism, and the pressing die includes: An outer mold, a core mold and a damping member, wherein a pressing hole penetrating in a vertical direction is provided in the outer mold, one end of the core mold is slidably connected to the inner wall of the pressing hole, and the other end extends out of the pressing hole, and the damping member is arranged between the outer mold and the core mold to limit the sliding of the core mold; The first horizontal driving mechanism is disposed in the cabinet, the clamping mechanism is connected to the horizontal driving mechanism, and the clamping mechanism can clamp or release the pressing die; The first analysis and detection unit includes a box body, a detection cavity is formed in the box body, and a detection port connected to the detection cavity is opened on the box body. The sample compression detection device also includes a partition unit: The partition unit includes a lifting mechanism and a cover shell. The lifting mechanism moves vertically on the lower side of the first analysis and detection unit. The cover shell forms an installation cavity. The bottom wall of the installation cavity is provided with a boss. The boss is provided with a mounting groove. When the material transfer unit moves to the first detection position and the lifting mechanism rises, the core mold is inserted into the mounting groove, and the cover shell is covered on the detection port. The installation cavity forms a sealed cavity with the detection cavity through the detection port, and the core mold is located in the sealed cavity.

2. The automatic sample pressing detection device for synchronous detection of powder materials according to claim 1 is characterized in that: The sample pressing unit comprises a sample pressing mechanism, a demoulding mechanism and a reset mechanism which are arranged in sequence along the horizontal direction, and the reset mechanism is closer to the first analysis and detection unit than the sample pressing mechanism; The pressing mechanism can press the powder on the material transfer unit, the demoulding mechanism can remove the powder after pressing, and the resetting mechanism can reset the core mold.

3. The automatic sample pressing detection device for synchronous detection of powder materials according to claim 1 is characterized in that: The quantitative feeding unit comprises: A second horizontal driving mechanism is disposed in the cabinet; and A loading box connected to the second horizontal driving mechanism, the loading box having a first position and a second position, and having a loading bin and a discarding bin; Wherein, when the feeding box is in the first position, the feeding bin is used to receive the powder, and when the feeding box is in the second position, the feeding bin is used to transport the powder to the drying unit.

4. The automatic sample pressing detection device for synchronous detection of powder materials according to claim 1 is characterized in that: The drying unit comprises: a first pipeline, the first pipeline being used to receive the powder delivered by the quantitative feeding unit; a heating mechanism, fixed relative to the first pipe and used for heating the first pipe; and The first spiral feeding mechanism is arranged in the first pipeline and is used for driving the material in the first pipeline to move back and forth in a horizontal direction.

5. The automatic sample pressing detection device for synchronous detection of powder materials according to claim 1 is characterized in that: The screening unit comprises: The second pipeline extends in the horizontal direction and has a feed opening at its lower side; a screen in a cylindrical shape and arranged in the second pipe in a horizontal direction; and The second spiral feeding mechanism is arranged in the screen and is used for driving the material in the screen to move back and forth in the horizontal direction.

6. The automatic sample pressing detection device for synchronous detection of powder materials according to claim 5, characterized in that: The second spiral feeding mechanism is installed at one end of the second pipeline, and a discharge port is opened at the other end of the second pipeline.

7. The automatic sample pressing detection device for synchronous detection of powder materials according to claim 1 is characterized in that: The sample compression detection device also includes: a first transfer hopper, the first transfer hopper being arranged between the drying unit and the screening unit to transport the powder dried by the drying unit to the screening unit; Wherein, the first transfer hopper is rotatably arranged on the cabinet around an axis of the first transfer hopper, and the axis is parallel to the vertical direction.

Images