Mineral spectrum analysis device and analysis method

Abstract

The invention belongs to the technical field of mineral spectrum analysis, and particularly relates to a mineral spectrum analysis device and method, and the device comprises a housing, a sample preparation unit, a sample transfer unit and a spectrum detection unit. The to-be-detected mineral powder formed by crushing is placed in the sample preparation cup of the sample preparation unit, the mineral powder can be vibrated by using the vibrating rod, the vibrated mineral powder can fall towards the sample loading mechanism through the sample outlet mechanism below the sample preparation cup, and a powder layer sample is formed on the sample loading mechanism, so that the design is simple in sample preparation and high in detection efficiency. And moreover, continuous multiple sample preparation detection can be conveniently carried out, the component distribution uniformity, authenticity and reliability of the sample can be improved in cooperation with the vibration effect on the mineral powder, the detection precision and the detection efficiency are improved, and meanwhile, the component detection deviation is also eliminated. Meanwhile, the equipment is portable, the sample preparation process does not need to depend on a tabletting mechanism and other large instruments, the requirements for field or on-site sample preparation and detection can be met, and the problems existing in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mineral spectral analysis, in particular to a mineral spectral analysis device and method. BACKGROUND

[0002] The conventional spectral analysis device mainly uses high-energy X-rays to excite the sample when detecting mineral components such as tourmaline. The mineral sample needs to be made into powder first, then the powder sample is mixed with adhesive (microcrystalline cellulose or boric acid), and is pressed into a smooth round tablet in a tablet press, and then is placed into the spectral analysis device to determine the element composition by detecting the characteristic X-ray energy and intensity emitted.

[0003] However, due to the complex chemical composition of tourmaline, the prepared and shaped tablet sample may contain different mineral particles or micro-area distribution, resulting in that the sample is not representative, not only the composition detection deviation is large, but also it is impossible to continuously sample and detect analysis multiple times. Moreover, the preparation process of the tablet sample is complicated, the equipment is large, and it is not convenient to carry, which cannot meet the needs of field or on-site detection. SUMMARY

[0004] The purpose of the present application is to provide a new mineral spectral analysis device which can realize continuous sample preparation and detection analysis, has high sample authenticity and strong reliability, improves the detection accuracy, eliminates the composition detection deviation, and has portability, so as to meet the needs of field or on-site sample preparation and detection.

[0005] To achieve the above purpose, the present application provides the following solutions: On the one hand, the present application provides a mineral spectral analysis device, comprising: A housing, the housing is internally provided with a working space one and a working space two which are separated by a partition plate, and the bottom of the partition plate or a position close to the bottom of the partition plate is provided with a through-type passage opening; A sample preparation unit, the sample preparation unit is arranged in one of the working space one and the working space two, and comprises a sample preparation cup and a sample tamping member, the sample preparation cup is used for placing the mineral powder to be detected, the sample tamping member is located above the sample preparation cup and is used for vibrating the mineral powder to scatter and uniformly distribute the components of the mineral powder, and the bottom of the sample preparation cup is further provided with a sample discharge mechanism, the sample discharge mechanism can discharge the mineral powder after vibration; A sample transfer unit, comprising a sample loading mechanism and a transfer mechanism, the sample loading mechanism can receive the mineral powder discharged by the sample discharge mechanism and spray a sealing layer on the mineral powder to form a powder layer sample, and the transfer mechanism can transfer the sample loading mechanism between the working space one and the working space two through the through-type passage opening; A spectrum detection unit is arranged in the other of the workspace one and the workspace two, and is capable of performing spectrum analysis detection on the powder layer sample on the sample carrying mechanism.

[0006] In some embodiments, the sample tamping member comprises a horizontal guide rail, a moving plate, a positioning plate, a lead screw, a rotating seat, a support arm and a vibrating rod, wherein: The horizontal guide rail is arranged on the partition plate, and the moving plate is slidingly installed on the horizontal guide rail; the moving plate is connected with a driving source to drive the moving plate to slide along the horizontal guide rail; The lead screw is vertically connected to a side end surface of the moving plate away from the partition plate, and is perpendicular to the horizontal guide rail; The positioning plate is slidingly connected to the moving plate, the lead screw penetrates the positioning plate in the vertical direction and is threadedly connected with the positioning plate, and a motor is connected to a top of the lead screw to drive the positioning plate to adjust the lifting relative to the moving plate; The rotating seat is fixed to a side end surface of the positioning plate away from the moving plate, and the support arm is rotatably connected to the rotating seat; the vibrating rod is arranged on the support arm, and is used to extend into the sample preparation cup to internally vibrate the ore powder; at least one of the rotating seat and the moving plate can adjust the oblique insertion angle of the vibrating rod relative to the sample preparation cup during tamping and vibration.

[0007] In some embodiments, the sample tamping member further comprises an end cover capable of being sealingly fitted with a cup opening of the sample preparation cup; a mounting hole is formed in the end cover, the vibrating rod penetrates the mounting hole and is rotatably matched with the mounting hole through a roller.

[0008] In some embodiments, a plurality of mounting holes are formed in the end cover, a plurality of vibrating rods are equidistantly arranged on the support arm along the extension direction of the horizontal guide rail, and the vibrating rods are one-to-one fitted with the mounting holes.

[0009] In some embodiments, a closable airtight door is further fitted at the through-type passage opening.

[0010] In some embodiments, the transfer mechanism comprises a guide rail frame, a sliding seat, a transfer drive and an upper layer plate, wherein: The guide rail frame is arranged below the inside of the machine shell and is perpendicular to the horizontal guide rail and the lead screw; the guide rail frame penetrates the through-type passage opening and spans between the workspace one and the workspace two; The sliding seat is slidingly installed on the guide frame and connected with a transfer drive, which is used to drive the sliding seat to move along the guide frame, so as to drive the sample loading mechanism to transfer between the working space one and the working space two; A plurality of supports are vertically fixed on the upper end surface of the sliding seat, and a plurality of the supports are arranged on two sides, and a support plate is horizontally connected between the supports on the same side; The upper layer plate is arranged above the sliding seat in parallel, a mounting groove is formed in the middle of the upper layer plate, and the sample preparation cup is detachably fixed in the mounting groove; The sample loading mechanism is arranged between the upper layer plate and the sliding seat, the upper end surface of the sliding seat is fixed with a sliding rail in parallel, the sliding rail is parallel to the guide frame, and the sample loading mechanism is slidingly connected with the sliding rail; the sample loading mechanism is connected with a sample loading drive, and the sample loading drive is used to drive the sample loading mechanism to move along the sliding rail.

[0011] In some embodiments, the sample discharging mechanism comprises a sample distribution disc and sand holes formed in the bottom of the sample preparation cup, the cup body of the sample preparation cup is provided with double-layer cup bottoms arranged in an up-down manner, a plurality of sand holes are formed in any one of the cup bottoms, and the sand holes are distributed in a straight line along the radial direction of the sample preparation cup; The sample distribution disc is rotatably installed between the double-layer cup bottoms, two groups of through holes are formed in the sample distribution disc, any one group of the through holes comprises two through hole regions arranged in a single radial direction of the sample distribution disc and symmetrically centered on the center of the sample distribution disc, and the through hole regions of the two groups of through holes are distributed vertically, wherein the hole diameter of one group of the through holes is greater than that of the other group of the through holes; A gear ring is arranged on the outer ring of the sample distribution disc, an opening is formed in the sidewall between the two layers of cup bottoms of the sample preparation cup to expose the gear ring, a sample distribution motor is arranged below the upper layer plate and close to the opening, a driving gear is coaxially connected to the output end of the sample distribution motor, and the driving gear is engaged with the gear ring at the position of the opening to drive the sample distribution disc to rotate and switch different groups of the through holes to be aligned with the sand holes.

[0012] In some embodiments, the upper layer plate is connected above the support plate through a vibration adding mechanism, the vibration adding mechanism comprises connecting shafts, connecting shaft frames and ultrasonic vibrators, two connecting shafts are vertically arranged on each of the support plates in a symmetrical manner, a connecting shaft frame is fixed on the upper end of each connecting shaft, and the top end of each connecting shaft frame is rotatably connected to the position corresponding to the four corners of the upper layer plate; a support spring is arranged on the outer sleeve of the connecting shaft; The ultrasonic vibrator is vertically fixed on one side of each connecting shaft on the support plate, the output end of the ultrasonic vibrator is fixed with the connecting shaft, and the ultrasonic vibrator can vibrate the mineral powder in the sample preparation cup.

[0013] In some embodiments, the sample loading mechanism comprises a preparation bin, a fixed clamping plate, a rack, an air flow seat, an air guide cylinder and a spraying pipe, wherein: A sand dropping groove is formed on the upper end surface of the preparation bin, two fixed clamping plates are symmetrically arranged in the preparation bin, a carbon tape parallel to the horizontal guide rail is connected between the two fixed clamping plates, the carbon tape is located directly below the sand dropping groove, can adhere and collect the mineral powder in the sand dropping groove, and forms a powder layer on the surface of the carbon tape; The rack is vertically arranged above the carbon tape, and the two ends of the rack are slidingly installed in the preparation bin; the lower end surface of the rack is fixed with two lifting plates, the carbon tape is located between the two lifting plates, a support roller with a middle convex portion and two sharp ends is rotatably connected between the two lifting plates, the support roller is located below the carbon tape, can support the carbon tape and roll with the carbon tape; the rack is connected with a rack drive, and the rack drive can drive the rack to move along the length direction of the carbon tape; The air flow seat is embedded and fixed in the rack, an air guide disc is installed on the lower end surface of the air flow seat, a plurality of air holes are arranged on the lower end surface of the air guide disc, the air guide cylinder is horizontally arranged on the rack, one end of the air guide cylinder is connected with the air flow seat, an air flow channel is formed in the air guide cylinder, and an air inlet is arranged on the other end of the air guide cylinder; the air guide cylinder can transport air flow to the air flow seat through the air flow channel, so that the air flow is sprayed downward through the air holes to blow off the excess mineral powder on the surface of the carbon tape; The spraying pipe is arranged in the air flow channel, one end of the spraying pipe is connected with an adapter, and the spraying pipe can spray a nano-carbon film on the powder layer on the carbon tape after blowing, so as to form a sample of the powder layer.

[0014] In some embodiments, the sample loading mechanism further comprises a lifting unit and a positioning pressure plate, the lifting unit is fixed on the rack, the positioning pressure plate is vertically connected below the lifting unit, the positioning pressure plate is located behind the support roller, and the positioning pressure plate can press the sample of the powder layer after blowing and film coating.

[0015] In some embodiments, the rack is further provided with a detection segment screening device.

[0016] In some embodiments, the detection segment screening device comprises an image acquisition device and a data processor.

[0017] In another aspect, the present application provides a mineral spectrum analysis method using the above mineral spectrum analysis device, wherein the rack is further provided with a detection segment screening device, and the mineral spectrum analysis method comprises: Place the mineral powder to be detected in the sample preparation cup, and vibrate the mineral powder in the sample preparation cup through at least one of the ultrasonic vibrator and the vibrating rod; Adhesively collect the mineral powder falling in the drop sand groove through the carbon adhesive tape to form a powder layer on the surface of the carbon adhesive tape; Drive the rack to slide along the length direction of the carbon adhesive tape to blow off the excess mineral powder on the surface of the carbon adhesive tape during the sliding process, and meanwhile, detect the integrity of the powder layer after blowing off through the detection section screening device, if the powder layer is detected to be completely spread on the surface of the carbon adhesive tape, select it as a detection section, and spray and press the powder layer of the detection section to form a powder layer sample. After all the detection sections are screened out by the carbon adhesive tape, move the whole sample loading mechanism to the working space where the spectral detection unit is located through the guide rail frame, and sequentially analyze the spectral of each detection section on the surface of the carbon adhesive tape through the spectral detection unit.

[0018] The present application has the following technical effects compared with the prior art: The mineral spectral analysis device of the present application places the detection mineral powder formed by crushing in the sample preparation cup, can vibrate the mineral powder through the vibrating rod, and the vibrated mineral powder can fall through the sample outlet mechanism below the sample preparation cup to the sample loading mechanism to form a powder layer sample. This design not only simplifies the sample preparation, but also facilitates continuous multiple sample preparation and detection. In combination with the vibration of the mineral powder, the composition distribution uniformity, authenticity and reliability of the sample can be improved, the detection accuracy and efficiency can be improved, and the composition detection deviation can be eliminated. At the same time, the equipment is portable, and the sample preparation process does not need to rely on large instruments such as a tablet pressing mechanism, which can adapt to field or on-site sample preparation and detection requirements, and solves the problems existing in the prior art.

[0019] In some technical solutions of the present application, the sample loading mechanism collects the mineral powder falling through the adhesion of the carbon adhesive tape, in combination with the blowing of the air cylinder, to form a mineral powder sample layer with uniform thickness and integrity on the surface of the carbon adhesive tape, and in combination with the film plating of the spraying pipe and the pressing of the pressing disc, a reliable belt mineral sample can be formed, which is suitable for continuous sample preparation and detection.

[0020] The mineral spectral analysis method of the present application is implemented by using the above mineral spectral analysis device, not only realizes continuous sample preparation and detection, but also detects the integrity of the powder layer after blowing off through the detection section screening device, which can screen out the belt sections that do not meet the detection requirements, and only the powder layer that is completely spread on the surface of the carbon adhesive tape is coated, pressed and detected, avoiding the energy waste and process consumption of coating, pressing and detecting unqualified samples, improving the detection reliability and detection accuracy, and also improving the mineral spectral analysis detection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed in the embodiments will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0022] Figure 1 The overall structure schematic diagram of the mineral spectrum analysis device disclosed in the embodiments of the present application is shown in the figure. Figure 2 The structure schematic diagram of the sample preparation unit disclosed in the embodiments of the present application is shown in the figure. Figure 3 The assembly schematic diagram of the sample preparation unit and the sample transfer unit disclosed in the embodiments of the present application is shown in the figure. Figure 4 The structure schematic diagram of the sample preparation cup disclosed in the embodiments of the present application is shown in the figure. Figure 5 The structure schematic diagram of the sample distribution disc disclosed in the embodiments of the present application is shown in the figure. Figure 6 The structure schematic diagram of the preparation bin disclosed in the embodiments of the present application is shown in the figure. Figure 7 The internal structure schematic diagram of the preparation bin disclosed in the embodiments of the present application is shown in the figure. Figure 8 The structure schematic diagram of the air guide cylinder disclosed in the embodiments of the present application is shown in the figure. Figure 9 The structure schematic diagram of the positioning pressure disc disclosed in the embodiments of the present application is shown in the figure.

[0023] In the figure: 100-mineral spectrum analysis device; 1-casing; 11-separation plate; 12-work space one; 13-work space two; 14-through type passage opening; 2-sample preparation cup; 21-upper cup bottom; 22-lower cup bottom; 23-sand hole; 24-sample distribution disc; 25-through hole; 26-tooth ring; 3-sampling member; 31-horizontal guide rail; 32-transport plate; 33-positioning plate; 34-screw rod; 35-rotating seat; 36-support arm; 37-vibrating rod; 38-end cover; 39-roller; 4-sample loading mechanism; 41-preparation bin; 42-sand dropping groove; 43-fixing clamping plate; 44-rack; 45-lifting plate; 46-air flow seat; 47-air guide disc; 48-air hole; 49-air guide cylinder; 410-air inlet interface; 411-spraying pipe; 412-adaptor; 413-supporting roller; 414-rotation shaft; 415-eccentric block; 416-lifting unit; 417-positioning pressure disc; 418-carbon tape; 5 - transfer mechanism; 51 - guide frame; 52 - sliding seat; 53 - support; 54 - upper layer plate; 55 - sliding rail; 56 - connecting shaft; 57 - connecting shaft frame; 58 - ultrasonic vibrator; 59 - support plate; 6 - spectral detection unit. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0025] One of the purposes of the present application is to provide a new mineral spectrum analysis device, which can realize continuous sample preparation detection and analysis, has high sample authenticity and strong reliability, improves detection precision, eliminates component detection deviation, and has portability, thereby meeting the needs of field or on-site sample preparation and detection.

[0026] Another purpose of the present application is to provide a mineral spectrum analysis method using the above mineral spectrum analysis device.

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0028] As Figure 1As shown, the embodiment provides a mineral spectrum analysis device 100, which comprises a shell 1, a sample preparation unit, a sample transfer unit and a spectrum detection unit 6. The shell 1 is internally provided with a working space one 12 and a working space two 13 separated by a partition plate 11, and the bottom of the partition plate 11 or a position close to the bottom of the partition plate 11 is provided with a through-type access port 14; the sample preparation unit is arranged in one of the working space one 12 and the working space two 13, which comprises a sample preparation cup 2 and a sample tamping member 3, the sample preparation cup 2 is used to place the powder of the pre-processed mineral to be detected (hereinafter referred to as "mineral powder"), and the sample tamping member 3 is located above the sample preparation cup 2 and is used to vibrate the mineral powder to scatter and evenly distribute the mineral powder; the bottom of the sample preparation cup 2 is also provided with a sample discharge mechanism, which can discharge the vibrated mineral powder; the sample transfer unit comprises a sample loading mechanism 4 and a transfer mechanism 5, the sample loading mechanism 4 can receive the mineral powder discharged by the sample discharge mechanism and spray a sealing layer on the mineral powder to form a powder layer sample, and the transfer mechanism 5 can transfer the sample loading mechanism 4 between the working space one 12 and the working space two 13 through the through-type access port 14; the spectrum detection unit 6 is arranged in the other one of the working space one 12 and the working space two 13, and can perform spectrum analysis and detection on the coated mineral powder layer formed on the sample loading mechanism 4, i.e. the powder layer sample. In actual application, the mineral to be detected includes but is not limited to tourmaline and other minerals.

[0029] In some possible implementation manners, as shown in the drawings, Figure 1 As shown, the shell 1 is preferably a spatially closed box structure, and the partition plate 11 is vertically arranged inside the shell 1 to separate the shell 1 into the left and right arranged working space one 12 and working space two 13, wherein the spectrum detection unit 6 is located in the working space one 12, and the sample preparation unit is located in the working space two 13. A taking and delivering port is formed in the upper part of the working space two 13, and a shell cover is arranged outside the taking and delivering port to seal the taking and delivering port as a whole, so that the sealing property of the working space two 13 can be realized after the taking and delivering port completes the feeding and taking of materials. Correspondingly, the working space one 12 can also be provided with a detachable or openable and closable cover, so as to facilitate the feeding and taking of materials or the maintenance and repair of the spectrum detection unit 6. Considering that all the unit structures in the shell 1 have electrical devices, a corresponding power connection port or charging port can also be arranged on the outer wall of the shell 1, so as to facilitate the normal use of the device.

[0030] In some possible implementation manners, the spectrum detection unit 6 preferably adopts a spectrometer. The excitation source (X-ray source) of the spectrometer comprises a micro-focus X-ray tube, and the micro-focus light beam is coupled with the ultra-flat powder layer sample (Ra<0.5 μm), which can eliminate the X-ray incident angle deviation caused by the surface undulation and can perform high-precision spectrum analysis and detection on the flatly prepared strip-shaped mineral powder.

[0031] In some possible implementation manners, the tamping member 3 of the sample preparation unit comprises a horizontal guide rail 31, a moving plate 32, a positioning plate 33, a lead screw 34, a rotating base 35, a support arm 36 and a vibrating rod 37. The horizontal guide rail 31 is arranged on the partition plate 11, the moving plate 32 is slidingly arranged on the horizontal guide rail 31, and the moving plate 32 is connected with a driving source. The driving source can be a lead screw provided with a motor or a driving cylinder, so as to drive the moving plate 32 to slide along the horizontal guide rail 31 (when the driving source is the lead screw, the lead screw penetrates through and is threadedly connected with the moving plate 32, the lead screw is parallel to the horizontal guide rail 31, and driving the lead screw to rotate can drive the moving plate 32 to slide along the horizontal guide rail 31). If the guide rail frame 51 is arranged along the X direction, the horizontal guide rail 31 is arranged along the Y direction, and the X direction and the Y direction are perpendicular. Meanwhile, the height (vertical) direction of the shell 1 is defined as the Z direction, and the X direction and the Y direction are both perpendicular to the Z direction. Further, the lead screw 34 is vertically and rotationally connected to the side end face of the moving plate 32 away from the partition plate 11, the lead screw 34 is arranged along the aforementioned Z direction, the positioning plate 33 is vertically and slidingly connected to the moving plate 32 through a track, the lead screw 34 penetrates through the positioning plate 33 in the vertical direction and is threadedly connected with the positioning plate 33, and the top of the lead screw 34 is connected with a motor. When the motor is started and drives the lead screw 34 to rotate, the positioning plate 33 can be driven to adjust the vertical displacement relative to the moving plate 32. The rotating base 35 is fixed to the side end face of the positioning plate 33 away from the moving plate 32, the support arm 36 is rotationally connected to the rotating base 35, and a plurality of vertically distributed vibrating rods 37 are equidistantly arranged on the support arm 36 along the Y direction. When the driving source connected with the moving plate 32 drives the moving plate 32 to slide along the horizontal guide rail 31, the plurality of vibrating rods 37 can be horizontally and longitudinally (i.e., along the Y direction) displaced, and in the process of adjusting the sliding of the sample cup 2 along the slide rail 55, the vibrating rods 37 can be horizontally and transversely (i.e., along the X direction) displaced relative to the sample cup 2, so as to realize the flexible adjustment of the vibrating rods 37 in the horizontal direction. When the support arm 36 is driven to rotate around the rotating base 35, the vibrating rods 37 can be obliquely inserted into the ore powder in the sample cup 2 at a corresponding angle, so as to further improve the internal vibration effect of the vibrating rods 37 on the ore powder. The vibrating rods 37 are mature product components, such as vibrating rods or ultrasonic amplitude rods, which are generally provided with a vibrating motor, and details are not described herein again. The rotating base 35 can be a conventional rotary mechanical arm or a motor rotation driving structure. The motor rotation driving structure comprises a motor, a support connected with the output shaft of the motor, and a support arm connected with the support. When the motor is started, the output end of the motor can drive the support to rotate, and then drive the support arm 36 to rotate around the rotating base 35.

[0032] In some possible implementation manners, as Figure 2As shown, the lower part of the support arm 36 is horizontally provided with an end cover 38, which can be sealingly fitted with the cup mouth of the sample preparation cup 2. A plurality of mounting holes are formed on the end cover 38, the number of the mounting holes is the same as the number of the vibrating rods 37, and each vibrating rod 37 penetrates through a corresponding mounting hole. A roller shaft 39 is sleeved on the vibrating rod 37, and the roller shaft 39 is rotatably connected with the mounting hole of the end cover 38. The roller shaft 39 can be a universal bearing, such as a ball hinge structure. This design not only realizes the assembly connection between the end cover 38 and the vibrating rods 37, but also facilitates the swinging of the vibrating rods 37 relative to the end cover 38, so as to internally vibrate the mineral powder at different angles. It should be noted that when the vibrating rod 37 is used, the end cover 38 needs to be moved downward under the driving of the lead screw 34 until the end cover 38 reaches the cup mouth of the sample preparation cup 2 and is sealed on the cup mouth of the sample preparation cup 2. At this time, the bottom end of the vibrating rod 37 extends into the sample preparation cup 2. During the vibrating process, the end cover 38 can be sealingly fitted with the sample preparation cup 2 to prevent the mineral powder from leaking. At the same time, since the end cover 38 is limited and positioned by the cup mouth of the sample preparation cup 2, the end cover 38 basically remains stationary during the vibrating process, so that the vibrating rod 37 can swing relative to the end cover 38 to complete the multi-angle vibrating. After the vibrating is completed, or when the next batch of mineral powder needs to be vibrated, the lead screw 34 can be driven in the reverse direction to pull the end cover 38 away from the sample preparation cup 2. After the end cover 38 is opened, the sample can be added into the sample preparation cup 2.

[0033] In actual application, in order to ensure reliable operation of the equipment, if the bottom end of the vibrating rod 37 is inclined to one side of the horizontal guide rail 31 (left inclination), the rotating seat 35 drives the support arm 36 to rotate clockwise relative to the rotating seat 35, so as to form an oblique insertion and vibration shaking effect on the mineral powder. During this process, the sample preparation cup 2 on the guide rail frame 51 should be matched to move left to ensure that the end cover 38 is always sealed with the sample preparation cup 2. Conversely, if the bottom end of the vibrating rod 37 is inclined away from one side of the horizontal guide rail 31 (right inclination), the sample preparation cup 2 on the guide rail frame 51 should be matched to move right to ensure that the end cover 38 is always sealed with the sample preparation cup 2.

[0034] In some preferred embodiments, the end cover 38 includes but is not limited to a circular, square, diamond or other irregularly shaped cover plate, and the cup mouth shape of the sample preparation cup 2 is adapted thereto. A sealing ring is arranged on the outer periphery of the end cover 38 to ensure the sealing between the end cover 38 and the cup mouth when they are connected.

[0035] In some feasible embodiments, the transfer mechanism 5 of the sample transfer unit includes but is not limited to a mechanical hand, a linear slide rail and the like. Considering that the linear slide rail structure is simpler, more stable in operation and lower in cost, the transfer mechanism 5 in the embodiment preferably realizes sample transfer based on a linear slide rail structure. Specifically: Figure 3As shown, the transfer mechanism 5 includes a guide rail frame 51, a sliding seat 52, a transfer drive and an upper layer plate 54. The guide rail frame 51 is arranged below the inside of the casing 1 along the X direction, penetrates the aforementioned through-type passage opening 14, and spans between the working space one 12 and the working space two 13. The sliding seat 52 is slidingly installed on the guide rail frame 51 and connected with the transfer drive, which is used to drive the sliding seat 52 to move along the guide rail frame 51 to realize the transfer of the sample between the working space one 12 and the working space two 13.

[0036] The upper end surface of the sliding seat 52 is vertically fixed with a plurality of supports 53, which are arranged on both sides along the Y direction. Taking the example of arranging two supports 53 on each side, the two supports 53 on each side are arranged along the X direction, and the two supports 53 on the same side are connected with a support plate 59 horizontally. The upper layer plate 54 is arranged above the sliding seat 52 in parallel, the middle part of the upper layer plate 54 is provided with a mounting groove matched with the sample preparation cup 2, the sample preparation cup 2 is detachably fixed in the mounting groove, and the ore powder can be placed in the sample preparation cup 2. The upper layer plate 54 is arranged above the support plate 59. The sample loading mechanism 4 is arranged between the upper layer plate 54 and the sliding seat 52, and the upper end surface of the sliding seat 52 is fixed with a sliding rail 55 in parallel, which is parallel to the guide rail frame 51. The sample loading mechanism 4 is slidingly connected with the sliding rail 55 through a sliding block, and the sample loading mechanism 4 is connected with a sample loading drive, which is used to drive the sample loading mechanism 4 to move along the sliding rail 55. As shown, Figure 3 As shown, the support 53 is installed at one end of the sliding rail 55 away from the partition plate 11, and the sample loading drive preferably adopts a cylinder or a hydraulic cylinder assembled on the sliding seat 52, which is connected with the sample loading mechanism 4 to drive the sample loading mechanism 4 to move along the sliding rail 55, so that the sample loading mechanism 4 moves to the directly below or away from the sample preparation cup 2.

[0037] In practical application, the aforementioned transfer drive can adopt a cylinder or a hydraulic cylinder, which is assembled in the casing 1, and one end of the cylinder or the hydraulic cylinder is connected with the end of the guide rail frame 51, and the other end of the cylinder or the hydraulic cylinder is connected with the sliding seat 52. By driving the cylinder or the hydraulic cylinder to extend or retract, the sliding seat 52 can move along the guide rail frame 51; the sample preparation cup 2 always moves synchronously relative to the guide rail frame 51. In other feasible schemes, in addition to the cylinder and the hydraulic cylinder, the transfer drive can also adopt a lead screw drive, that is, a lead screw and a lead screw motor are further configured between the sliding seat 52 and the guide rail frame 51. The lead screw is parallel to the guide rail frame 51 and is rotatably installed on the guide rail frame 51, and at the same time, the lead screw penetrates the sliding seat 52 and is threadedly matched with the sliding seat 52. At this time, the lead screw, the sliding seat 52 and the guide rail frame 51 constitute an electric sliding table assembly, and the lead screw motor can be started to drive the sliding seat 52 to move along the guide rail frame 51.

[0038] In some feasible implementations, an airtight door is preferably installed at the through-type channel opening 14. When the airtight door is sealed with the channel opening, the sample preparation unit and the sample transfer unit are located in one working space, while the spectral detection unit 6 is located in another working space, achieving independent sealing of the two working spaces. Opening the airtight door allows for the transfer of the sample carrier 4. The airtight door can adopt a sliding curtain structure, with a metal counterweight rod installed at the bottom of the curtain to ensure it hangs vertically. Side sealing brushes or flanges that cooperate with the guide rails are provided on both sides of the curtain to reduce side gaps. Existing products are used for the airtight door, and details will not be elaborated here.

[0039] In some feasible embodiments, the sample dispensing mechanism at the bottom of the sample preparation cup 2 includes a sand hole 23 formed at the bottom of the sample preparation cup 2 and a sample dispensing disk 24 rotatably mounted on the inner wall of the bottom of the cup body. The surface of the sample dispensing disk 24 is distributed with multiple sets of through holes 25. For example Figures 3-5 As shown, the sample preparation cup 2 has a double-layered bottom arranged vertically. Taking a cylindrical cup with a circular cross-section as an example, multiple sand holes 23 are opened on each layer of the bottom. These sand holes 23 are linearly distributed along the radial direction of the sample preparation cup 2. The diameter and distribution of the sand holes 23 on both layers of the bottom are the same, and the opening areas of the two layers of the bottom are aligned vertically. The sample distribution plate 24 is rotatably installed between the double-layered bottoms. Specifically, preferably, the sample distribution plate 24 is placed directly between the upper and lower layers of the bottom, and the upper and lower surfaces of the sample distribution plate 24 are respectively fitted with the upper and lower layers of the bottom. The outer circumferential wall of the sample preparation cup 2 can limit the circumference of the sample distribution plate 24, ensuring that the sample distribution plate 24 only rotates in its original position. Figure 5As shown in the figure, two sets of through holes 25 are provided on the sample dividing plate 24. Any one set of through holes 25 includes two through hole regions arranged along a single radial direction and symmetrically centered on the center of the sample dividing plate 24. The through hole regions of the two sets of through holes 25 are arranged vertically, that is, the four through hole regions are evenly distributed at intervals of 90° in the circumferential direction, and the two through hole regions of the same set are aligned in a "one" character arrangement. Among them, the apertures of the through holes in the same set are the same, and the aperture of one set of through holes 25 is larger than the aperture of the other set of through holes 25. A gear ring 26 is provided on the outer ring of the sample dividing plate 24. At the same time, a notch for exposing the gear ring 26 is provided on the lower side wall of the upper cup bottom 21 of the sample making cup 2. A sample dividing motor is provided below the upper plate 54 near the notch. The output end of the sample dividing motor is coaxially connected with a driving gear. The driving gear meshes with the gear ring 26 at the notch position. Starting the sample dividing motor can drive the driving gear to rotate. The driving gear rotates and drives the sample dividing plate 24 to rotate in place, so that a certain set of through holes 25 on the sample dividing plate 24 is aligned with the sand hole 23 opening regions of the upper and lower cup bottoms (at this time, the sand holes 23 and the through holes 25 on the upper and lower cup bottoms are aligned one by one up and down), realizing sample output. By rotating and adjusting the sample dividing plate 24, different aperture-sized through holes 25 can be switched to be aligned with the sand holes 23, so as to adjust the particle size of the ore powder sample output. Based on the division of different particle sizes of the ore powder, samples of each different particle size of the ore powder can be prepared and spectroscopically analyzed. On the one hand, it ensures the flatness of the overall sample during each sample preparation, improves the spectroscopic analysis accuracy, and avoids uneven light paths caused by the mixing of large particles and fine powders. On the other hand, appropriate spectroscopic analysis methods can be adopted according to the powder layers formed by the spreading of ore powders with different particle sizes, with stronger flexibility and higher detection and analysis accuracy.

[0040] In practical applications, in addition to the above scheme where the two sets of through holes 25 are arranged vertically and crosswise, three or more sets of through holes can also be provided. For example, the three sets of through holes 25 are arranged in a "rice" character crosswise. The apertures of the three sets of through holes 25 are different. Compared with the design of the two sets of through holes 25, the three sets of through holes 35 can further refine the particle size grades of the ore powder sample output and realize the preparation and detection of more specifications of samples.

[0041] As a preferred implementation manner, in this embodiment, the upper plate 54 is connected above the support plate 59 through a vibration adding mechanism. The vibration adding mechanism includes a connecting shaft 56, a connecting shaft frame 57 and an ultrasonic vibrator 58, as Figure 3 and Figure 4As shown, two connecting shafts 56 are vertically arranged symmetrically on each support plate 59, the lower end of each connecting shaft 56 penetrates the support plate 59 and is in gap sliding fit with the support plate 59, so that a relative sliding allowance is reserved between each connecting shaft 56 and the support plate 59; the upper end of the connecting shaft 56 is fixed with a connecting shaft bracket 57, the top end of each connecting shaft bracket 57 is rotatably connected with the corresponding position of the four corners of the upper layer plate 54; a support spring is sleeved on the connecting shaft 56 and is supported between the connecting shaft bracket 57 and the support plate 59 to elastically support the connecting shaft bracket 57; the ultrasonic vibrator 58 is vertically fixed on one side of each connecting shaft 56 on the support plate 59, and the output end of the ultrasonic vibrator 58 is fixed with the connecting shaft 56 or the connecting shaft bracket 57. The connecting shaft 56 and the connecting shaft bracket 57 are fixed as a whole, and the two can be driven by the ultrasonic vibrator 58 to produce a sliding displacement relative to the support plate 59, so as to realize the shaking and tamping of the upper layer plate 54.

[0042] The crushed ore powder inevitably contains sand particles of different particle sizes. Therefore, by adjusting the rotation of the sample dividing disc 24, a corresponding group of through holes 25 is connected with the sand holes 23, so that the appropriate particle size range of the ore powder is selected for feeding. Specifically, in order to ensure the flatness of the ore powder after sampling, the smallest through hole 25 is preferentially connected with the sand hole 23. At this time, the ore powder can be freely fed under the action of gravity and at least one of the vibration mechanism and the vibrating rod 37, and enter the lower sample carrying mechanism 4. During feeding, at least one of the vibration mechanism and the vibrating rod 37 is turned on, so that the vibrating feeding can be realized, the sand hole 23 is prevented from being blocked, and the particle size screening is accelerated. At the same time, each ultrasonic vibrator 58 on the support plate 59 can be activated in sequence along the clockwise direction, and the excitation frequency is synchronized with the feeding period (such as 0.5 Hz-2 Hz). The excitation waveforms of adjacent ultrasonic vibrators 58 are superimposed to form a traveling wave field (not a standing wave), so that the ore powder layer produces directional migration (migration speed ≥8 mm / s). Compared with the synchronous activation of each ultrasonic vibrator 58 (synchronous activation feeding efficiency is generally low, and the sand hole may be blocked during preliminary ore powder feeding), the ore powder blocked in the sand hole can be further shaken out by sequentially activating each ultrasonic vibrator 58 in a specific sequence, so as to ensure uniform and smooth feeding in the subsequent process.

[0043] As a preferred embodiment, as Figure 6 and Figure 7As shown, the sample loading mechanism 4 comprises a preparation bin 41, a fixed clamping plate 43, a rack 44, an airflow seat 46 and a gas guide cylinder 49. The upper end surface of the preparation bin 41 is provided with a linear sand dropping groove 42 along the Y direction. When the preparation bin 41 is located below the sample preparation cup 2, the sand hole 23 area at the bottom of the sample preparation cup 2 can be aligned with the sand dropping groove 42 up and down, so that the mineral powder passing through the sand hole 23 can be linearly dropped into the preparation bin 41. As an optional solution, in order to avoid waste of mineral powder, the groove length of the sand dropping groove 42 is not shorter than the length of the sand hole 23 area, and the groove width of the sand dropping groove 42 is not smaller than the width of the sand hole 23 area. The fixed clamping plate 43 is provided with two and symmetrically distributed in the preparation bin 41. The fixed clamping plate 43 is connected with a carbon tape 418 parallel to the Y direction. The carbon tape 418 has high adhesion, which can adhere and collect the mineral powder dropped in the sand dropping groove 42, so that a powder layer is formed on the surface. The rack 44 is arranged parallel to the X direction. The two ends of the rack 44 are slidingly installed in the preparation bin 41 through guide rods. The rack 44 is vertically arranged with the carbon tape 418. The lower end surface of the rack 44 is fixed with a lifting plate 45. The carbon tape 418 is located between the two lifting plates 45. The two lifting plates 45 are transversely (i.e. X direction) rotatably connected with a middle convex and two-end sharp support roller 413. The carbon tape 418 is located above the support roller 413 and attached to the surface of the support roller 413. The support roller 413 is in rolling cooperation with the carbon tape 418 and can form a certain lifting and supporting effect on the carbon tape 418. The airflow seat 46 is embedded and fixed in the rack 44. The lower end surface of the airflow seat 46 is provided with a gas guide disc 47. The lower end surface of the gas guide disc 47 is provided with a plurality of air holes 48. The gas guide disc 47 is located directly above the carbon tape 418. The gas guide cylinder 49 is horizontally arranged on the rack 44 and one end thereof is communicated with the airflow seat 46. The gas guide cylinder 49 is provided with an airflow channel. The other end of the gas guide cylinder 49 is provided with an air inlet 410 for connecting a high-pressure gas source (such as a compressor). That is, the high-pressure gas delivered in the air inlet 410 can enter the airflow seat 46 through the airflow channel and be sprayed out through each air hole 48 of the gas guide disc 47 below the airflow seat 46, so as to realize blowing of the excess mineral powder on the surface of the carbon tape 418 and ensure that the upper surface of the carbon tape 418 forms a uniform and flat single-layer powder layer.

[0044] In some feasible embodiments, the lower surface of the gas guide disc 47 is provided with a concave arc structure, and each air hole 48 vertically faces the surface of the carbon tape 418. In this case, when the rack 44 slides along the length direction of the carbon tape 418, the support roller 413 can form a bottom supporting effect on the carbon tape 418, and the carbon tape 418 can form an outer convex arc surface after spreading along the surface of the support roller 413. At this time, each air hole 48 of the gas guide disc 47 can vertically blow air to the surface of the carbon tape 418, further ensuring that there is no residual mineral powder on the surface of the carbon tape 418 and ensuring the flatness of the powder layer. Only one row of air holes 48 can be arranged on the gas guide disc 47, or 2-3 rows of air holes 48 can be arranged side by side along the length direction of the carbon tape 418.

[0045] In some possible implementation manners, the supporting roller 413 comprises a middle convex, two-end pointed roller body and a rotating shaft 414 rotatably installed in the roller body, the roller body is in an oval shape in the axial cross section of the supporting roller 413, the rotating shaft 414 is rotatably installed on the two lifting plates 45 through bearings at both ends, and the roller body is rotatably connected with the two lifting plates 45 through bearings at both ends, so as to ensure that the roller body is in rolling contact with the carbon adhesive tape 418. An eccentric block 415 is fixed on the rotating shaft 414, the rotating shaft 414 can be rotated under the driving of an external motor, so that the eccentric block 415 generates centrifugal vibration, and the roller body of the supporting roller 413 can form a vibration shaking effect on the carbon adhesive tape 418.

[0046] In some possible implementation manners, a spraying pipe 411 is fixed in the airflow channel of the air guide cylinder 49, one end of the spraying pipe 411 is connected with an adapter 412, and the adapter 412 is used for connecting the nanometer carbon film supply device. The rack 44 can be provided with a detection section screening device (not shown in the figure), and the detection section screening device comprises an image acquisition device and a data processor in communication connection with the image acquisition device. The image acquisition device can specifically adopt a visual sensor (or an industrial camera). After the residual ore powder on the surface of the carbon adhesive tape 418 is completely blown away, the visual sensor (or the industrial camera) can be used to acquire the surface image of the carbon adhesive tape 418, capture the topological image of the surface of the carbon adhesive tape 418, and the data processor can identify the complete area of the powder layer through an edge detection algorithm (Sobel operator), and select the powder layer on the surface of the carbon adhesive tape 418 which is spread more completely as a detection section. The spraying pipe 411 can spray the nanometer carbon film on the selected detection section (at this time, the carbon adhesive tape 418 is still spread in a curved surface through the supporting roller 413). In this way, the nanometer carbon film is deposited (the film thickness is 20±2 nm) under the condition that the carbon adhesive tape 418 maintains a constant curvature (R is about 150 mm), and the curved surface tension makes the carbon film-powder bonding strength increased to 3 times (up to 18 MPa) of that of a flat substrate. The nanometer carbon film is fully combined with the ore powder on the surface of the carbon adhesive tape 418, and a relatively flat plated layer structure is formed. The above-mentioned detection section screening device detects the detection section during the movement of the rack 44. If a qualified detection section is detected, the spraying pipe 411 is started to spray the nanometer carbon film. If it is detected that the powder layer has local defects, the spraying pipe 411 stops spraying. After a qualified detection section is detected again, the spraying pipe 411 is started to spray again. In this way, the blowing, detection and spraying of the entire carbon adhesive tape 418 are completed. The opening and closing device of the spraying pipe 411 can be in communication connection with the detection section screening device through a controller, so that the spraying pipe 411 can be automatically opened and closed in real time according to the image recognition result.

[0047] As Figure 9As shown, the rack 44 is also fixed with a lifting unit 416, and a positioning pressure disc 417 is vertically connected below the lifting unit 416, which is located behind the supporting roller 413 and can assist in pressing the detection section after blowing and plating at 5-15 MPa. After pressing, the detection section can be scanned again, and the plating completeness can be fed back in real time and marked as unqualified area. The lifting unit 416 includes but is not limited to a lifting cylinder or a lifting hydraulic cylinder arranged vertically.

[0048] In some possible embodiments, the sample loading mechanism 4 is also provided with a rack drive (not shown in the figure). The rack drive can be a cylinder or a hydraulic cylinder arranged along the Y direction, which is connected with the rack 44 to drive the rack 44 to move along the length direction of the carbon tape 418. The carbon tape 418 is completely exposed in the shakeout tank 42. During the extension and retraction movement of the cylinder or the hydraulic cylinder to drive the rack 44 to move along the carbon tape 418, the blowing and spraying of all the powder layers on the carbon tape 418 are continuously completed until the carbon tape surface is completely distributed with the mineral powder and sprayed with the nano-carbon film. Then, the rack 44 moves to one end of the carbon tape 418 to avoid affecting the full exposure of the carbon tape 418 in the shakeout tank 42.

[0049] Then, the cylinder or the hydraulic cylinder connected with the sample loading mechanism 4 is used to move the sample loading mechanism 4 loaded with the mineral powder layer after film plating to the end of the slide rail 55 away from the sample preparation cup 2. Then, the slide seat 52 is driven to move along the guide rail frame 51 to move the sample loading mechanism 4 to the working space 12, and the exposed powder layer sample on the carbon tape 418 in the shakeout tank 42 is detected and analyzed by using the spectrometer. During the detection process, the carbon tape 418 is static, and when a certain detection section is completed, the spectrometer can be moved to detect the next detection section until all the detection sections on the carbon tape 418 are detected. In addition, the fixed clamping plate 43 can be replaced by a conveying mechanism such as a conveyor wheel. During the detection process, the position of the spectrometer is always fixed, and when a detection section on the carbon tape 418 is detected, the next detection section can be replaced by the conveying mechanism and conveyed to the position below the spectrometer for detection until all the detection sections on the carbon tape 418 are detected.

[0050] The working principle of the mineral spectrum analysis device 100 in the embodiment will be described in detail below by taking the analysis and detection of tourmaline minerals as an example. The mineral powder to be detected formed by crushing the tourmaline minerals can be placed in the sample preparation cup 2. The sample preparation cup 2 can uniformly vibrate the mineral powder by using the multiple ultrasonic vibrators 58, and the vibration rod 37 in the working space 2 can further assist in vibrating the mineral powder in the sample preparation cup 2. In actual application, only one of the vibration rod 37 and the ultrasonic vibrator 58 can be used. The mineral powder after vibrating can be vertically dropped to the carbon adhesive tape 418 through the sand hole 23 below the sample preparation cup 2 to form a powder layer on the surface of the carbon adhesive tape 418, so as to facilitate continuous multiple sample preparation detection; The rack 44 in the preparation bin 41 is driven to slide along the length direction of the carbon adhesive tape 418, and the downward jet air flow of the air flow seat 46 is used to blow off the excess mineral powder on the surface of the carbon adhesive tape 418 during the sliding process; after comparison, a plurality of suitable detection sections are selected, the nano-carbon film is sprayed by the spraying pipe 411 in the air guide cylinder 49, and the powder layer after film plating is uniformly pressed and formed by the positioning pressure plate 417; Finally, the airtight door is opened, the whole sample loading mechanism 4 is moved to the working space 12 through the guide rail frame 51, and each detection section on the surface of the carbon adhesive tape 418 is sequentially analyzed by the spectrometer, so that the tourmaline mineral composition detection is realized.

[0051] It should be understood that the structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and do not have technical significance, any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect and purpose of the application, should still fall within the scope of the disclosed technology.

[0052] The principles and implementation modes of the application are described by using specific examples, and the above examples are only used to help understand the method and core idea of the application; meanwhile, for those skilled in the art, according to the idea of the application, the specific implementation mode and application range can be changed. In summary, the content of the specification should not be understood as a limitation of the application.

Claims

1. A mineral spectral analysis device, characterized in that, include: The housing (1) has a working space 1 (12) and a working space 2 (13) separated by a partition plate (11), and a through passage (14) is provided at the bottom or near the bottom of the partition plate (11). The sample preparation unit is located in one of the working space one (12) and the working space two (13). It includes a sample preparation cup (2) and a sample tamping device (3). The sample preparation cup (2) is used to place the mineral powder to be tested. The sample tamping device (3) is located above the sample preparation cup (2) and is used to tamp the mineral powder to disperse the mineral powder and make the composition evenly distributed. The bottom of the sample preparation cup (2) is also provided with a sample discharge mechanism, which can discharge the tamped mineral powder. The sample transfer unit includes a sample carrying mechanism (4) and a transfer mechanism (5). The sample carrying mechanism (4) can receive the mineral powder discharged by the sample discharging mechanism and spray a sealing layer onto the mineral powder to form a powder layer sample. The transfer mechanism (5) can transfer the sample carrying mechanism (4) between the working space one (12) and the working space two (13) through the through-type channel opening (14). The spectral detection unit (6) is located in one of the working space one (12) and the working space two (13), and the spectral detection unit (6) is capable of performing spectral analysis on the powder layer sample on the sample carrier (4).

2. The mineral spectroscopic analysis apparatus according to claim 1, characterized in that, The tamping component (3) includes a horizontal guide rail (31), a transfer plate (32), a positioning plate (33), a lead screw (34), a rotating seat (35), a support arm (36), and a vibrating rod (37), wherein: The horizontal guide rail (31) is disposed on the partition plate (11), and the transfer plate (32) is slidably mounted on the horizontal guide rail (31); the transfer plate (32) is connected to a drive source to drive the transfer plate (32) to slide along the horizontal guide rail (31); The lead screw (34) is vertically rotatably connected to the end face of the transfer plate (32) away from the partition plate (11), and the lead screw (34) is perpendicular to the horizontal guide rail (31). The positioning plate (33) is slidably connected to the transfer plate (32), the lead screw (34) passes through the vertical direction of the positioning plate (33) and is threadedly connected to the positioning plate (33), and a motor is connected to the top of the lead screw (34) to drive the positioning plate (33) to adjust its height relative to the transfer plate (32); The rotating seat (35) is fixed on the end face of the positioning plate (33) away from the transfer plate (32), and the support arm (36) is rotatably connected to the rotating seat (35); the vibrating rod (37) is disposed on the support arm (36), and the vibrating rod (37) is used to extend into the sample cup (2) to internally vibrate the mineral powder; at least one of the rotating seat (35) and the transfer plate (32) can adjust the angle of the vibrating rod (37) relative to the sample cup (2) during the vibration process.

3. The mineral spectroscopic analysis apparatus according to claim 2, characterized in that, The tamping component (3) also includes an end cap (38) that can be sealed and assembled with the mouth of the sample preparation cup (2); the end cap (38) has an installation hole, the tamping rod (37) passes through the installation hole and rotates with the installation hole through a roller (39).

4. The mineral spectroscopic analysis apparatus according to claim 2 or 3, characterized in that, The through passageway (14) is also equipped with an airtight door that can be opened and closed.

5. The mineral spectroscopic analysis apparatus according to claim 2 or 3, characterized in that, The transfer mechanism (5) includes a guide rail (51), a sliding seat (52), a transfer drive, and an upper plate (54), wherein: The guide rail frame (51) is located inside the lower part of the housing (1) and is perpendicular to the horizontal guide rail (31) and the lead screw (34); the guide rail frame (51) passes through the through-type channel opening (14) and spans between the first workspace (12) and the second workspace (13); The sliding seat (52) is slidably mounted on the guide rail frame (51) and connected to the transfer drive. The transfer drive is used to drive the sliding seat (52) to move along the guide rail frame (51) so as to drive the sample carrier (4) to transfer between the first workspace (12) and the second workspace (13). The upper end face of the sliding seat (52) is vertically fixed with multiple brackets (53), the multiple brackets (53) are arranged on both sides, and the brackets (53) located on the same side are horizontally connected by a support plate (59). The upper plate (54) is arranged parallel above the sliding seat (52), and an installation groove is provided in the middle of the upper plate (54). The sample cup (2) is detachably fixed in the installation groove. The sample carrier (4) is disposed between the upper plate (54) and the sliding seat (52). The upper end face of the sliding seat (52) is fixed with a slide rail (55) parallel to the guide rail frame (51). The sample carrier (4) is slidably connected to the slide rail (55). The sample carrier (4) is connected to a sample carrier drive, which is used to drive the sample carrier (4) to move along the slide rail (55).

6. The mineral spectroscopic analysis apparatus according to claim 5, characterized in that, The sampling mechanism includes a sampling plate (24) and sand holes (23) opened at the bottom of the sample preparation cup (2). The bottom of the sample preparation cup (2) is provided with a double-layer cup bottom arranged vertically. Multiple sand holes (23) are opened on any layer of the cup bottom, and the sand holes (23) are distributed in a straight line along the radial direction of the sample preparation cup (2). The sample distribution plate (24) is rotatably installed between the double-layer cup bottoms. The sample distribution plate (24) has two sets of through holes (25). Each set of through holes (25) includes two through hole areas arranged along a single radial direction of the sample distribution plate (24) and symmetrical about the center of the sample distribution plate (24). The through hole areas of the two sets of through holes (25) are vertically distributed. The diameter of one set of through holes (25) is larger than the diameter of the other set of through holes (25). The outer ring of the sample distribution plate (24) is provided with a toothed ring (26). A notch is opened on the side wall between the two cup bottoms of the sample preparation cup (2) to expose the toothed ring (26). A sample distribution motor is provided below the upper plate (54) near the notch. The output end of the sample distribution motor is coaxially connected to an active drive gear. The active drive gear meshes with the toothed ring (26) at the notch position to drive the sample distribution plate (24) to rotate and switch different sets of through holes (25) to align with the sand holes (23).

7. The mineral spectroscopic analysis apparatus according to claim 5, characterized in that, The upper plate (54) is connected to the support plate (59) above by a vibration mechanism. The vibration mechanism includes a connecting shaft (56), a coupling frame (57), and an ultrasonic vibrator (58). Two connecting shafts (56) are symmetrically and vertically arranged on each support plate (59). The upper end of the connecting shaft (56) is fixed with a coupling frame (57). The top end of each coupling frame (57) is rotatably connected to the four corners of the upper plate (54). The connecting shaft (56) is sleeved with a support spring. The ultrasonic vibrator (58) is vertically fixed on one side of each of the connecting shafts (56) on the support plate (59). The output end of the ultrasonic vibrator (58) is fixed to the connecting shaft (56) and can vibrate the mineral powder in the sample cup (2).

8. The mineral spectroscopic analysis apparatus according to claim 5, characterized in that, The sample carrier mechanism (4) includes a preparation chamber (41), a fixing clamp (43), a frame (44), an airflow seat (46), an air guide cylinder (49), and a spraying pipe (411), wherein: The preparation chamber (41) has a sand drop trough (42) on its upper surface. Two fixed clamps (43) are provided and symmetrically distributed in the preparation chamber (41). A carbon tape (418) parallel to the horizontal guide rail (31) is connected between the two fixed clamps (43). The carbon tape (418) is located directly below the sand drop trough (42) and can adhere and collect the mineral powder falling into the sand drop trough (42) and form a powder layer on the tape surface. The frame (44) is vertically mounted above the carbon tape (418), and both ends of the frame (44) are slidably installed in the preparation chamber (41). A support plate (45) is fixed on the lower end face of the frame (44), and the carbon tape (418) is located between the two support plates (45). A support roller (413) with a convex center and pointed ends is rotatably connected between the two support plates (45). The support roller (413) is located below the carbon tape (418), can support the carbon tape (418), and rolls with the carbon tape (418). The frame (44) is connected to a frame drive, which can drive the frame (44) to move along the length direction of the carbon tape (418). The airflow seat (46) is embedded and fixed in the frame (44). An air guide plate (47) is installed on the lower end face of the airflow seat (46). A number of air holes (48) are distributed on the lower end face of the air guide plate (47). The air guide cylinder (49) is horizontally arranged on the frame (44). One end of the air guide cylinder (49) is connected to the airflow seat (46). An airflow channel is opened in the air guide cylinder (49). An air inlet (410) is provided at the other end of the air guide cylinder (49). The air guide cylinder (49) can deliver airflow to the airflow seat (46) through the airflow channel so that the airflow is sprayed downward through the air holes (48) to blow away excess mineral powder on the surface of the carbon tape (418). The spraying tube (411) is disposed in the airflow channel. One end of the spraying tube (411) is connected to an adapter (412). The spraying tube (411) can perform nano-carbon film spraying on the powder layer that has been blown off on the carbon tape (418) to form the powder layer sample.

9. The mineral spectroscopic analysis apparatus according to claim 8, characterized in that, The sample carrying mechanism (4) further includes a lifting unit (416) and a positioning pressure plate (417). The lifting unit (416) is fixed on the frame (44). The positioning pressure plate (417) is vertically connected below the lifting unit (416). The positioning pressure plate (417) is located behind the support roller (413). The positioning pressure plate (417) can press the powder layer sample after it has been blown and coated.

10. A mineral spectroscopic analysis method implemented using the mineral spectroscopic analysis apparatus of claim 9, characterized in that, The frame (44) is also equipped with a screening device for the detection section, and the mineral spectral analysis method includes: The mineral powder to be tested is placed in the sample preparation cup (2), and the mineral powder in the sample preparation cup (2) is vibrated by at least one of the ultrasonic vibrator (58) and the vibrating rod (37); The carbon tape (418) is used to adhere and collect the mineral powder falling into the sand drop trough (42) to form a powder layer on the surface of the carbon tape (418). The frame (44) is driven to slide along the length of the carbon tape (418) to blow away excess mineral powder on the surface of the carbon tape (418) during the sliding process. At the same time, the integrity of the powder layer after blowing is detected by the screening device of the detection section. If the powder layer is detected to be completely spread on the surface of the carbon tape (418), it is selected as the detection section, and the powder layer of the detection section is subjected to nano carbon film spraying and pressing to form the powder layer sample. After all the detection segments are screened out by the carbon tape (418), the entire sample carrier (4) is moved to the working space of the spectral detection unit (6) by the guide rail frame (51), and the spectral detection unit (6) performs spectral analysis on each of the detection segments on the surface of the carbon tape (418) in sequence.

Images