A sample placement mechanism and element analyzer

Abstract

The present invention discloses a sample placing mechanism and an element analyzer. The sample placing mechanism comprises a turntable mechanism and a driving mechanism. The turntable mechanism comprises a sample placing plate and a sample placing plate rotatably connected to the top of the sample placing plate, a sample placing hole is arranged through the sample placing plate, and at least two sample placing holes are arranged in sequence on the sample placing plate around its rotation center line. One of the bottom surface of the sample placing plate and the top surface of the sample placing plate is a positioning surface and an elastic positioning member is arranged on the other, and a positioning groove is arranged on the positioning surface. The driving mechanism is used to drive the sample placing plate to rotate so that each sample placing hole moves in sequence to align with the sample placing hole, and when each sample placing hole is aligned with the sample placing hole, the elastic positioning member is ejected and plugged into the positioning groove, and when each sample placing hole deviates from the sample placing hole, the elastic positioning member is compressed by the positioning surface to avoid hindering the rotation of the sample placing plate. Due to the cooperation of the elastic positioning member and the positioning groove, reliable positioning of the sample placing plate when it stops can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of detection equipment, and in particular to a sample placing mechanism and an element analyzer. Background Art

[0002] The sample placement and sample delivery mechanism of the element analyzer in the coal quality testing instrument industry on the market is complex in structure and has poor reliability. The typical sample placement and sample delivery mechanism consists of three parts: a turntable mechanism, a slider mechanism and a sample delivery mechanism. These three mechanisms are linked and coordinated to complete a variety of sample placement and sample delivery processes for experimental analysis.

[0003] The turntable mechanism includes a sample drop plate and a sample placement plate rotatably connected to the sample drop plate, a sample placement hole is arranged on the sample placement plate, and a sample drop hole is arranged on the sample drop plate. The sample feeding mechanism drives the sample placement plate to rotate by driving the slider mechanism, so that each sample placement hole on the sample placement plate is aligned with the sample drop hole in sequence, so that the samples in each sample placement hole fall into the sample drop hole in sequence. However, each time the sample placement plate stops rotating, it is difficult for the sample drop hole to maintain the state of being aligned with the sample placement hole, which affects the falling of the sample.

[0004] Therefore, how to achieve reliable positioning of the sample placing plate when it stops rotating is a technical problem that those skilled in the art need to solve at present. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a sample placing mechanism, which can realize reliable positioning of the sample placing plate when the sample placing plate stops rotating. Another object of the present invention is to provide an element analyzer including the sample placing mechanism, which can realize reliable positioning of the sample placing plate when the sample placing plate stops rotating.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A sample placing and dropping mechanism, comprising a turntable mechanism and a driving mechanism;

[0008] The turntable mechanism includes a sample drop plate and a sample placement plate rotatably connected to the sample drop plate, the sample drop plate is provided with sample drop holes, and at least two sample placement holes are sequentially provided on the sample placement plate around its rotation center line;

[0009] One of the bottom surface of the sample placing plate and the top surface of the sample dropping plate is a positioning surface and an elastic positioning member is arranged on the other, and a positioning groove is arranged on the positioning surface;

[0010] The driving mechanism is used to drive the sample plate to rotate so that each of the sample plates moves in sequence to align with the sample drop hole, and when each of the sample plates is aligned with the sample drop hole, the elastic positioning member pops into and is inserted into the positioning groove, and when each of the sample plates deviates from the sample drop hole, the elastic positioning member is compressed by the positioning surface to avoid hindering the rotation of the sample plate.

[0011] Preferably, the positioning groove is a tapered hole.

[0012] Preferably, the elastic positioning member includes a steel ball and a compression spring for pressing the steel ball toward the positioning surface.

[0013] Preferably, the turntable mechanism further comprises a turntable bearing, an outer ring of the turntable bearing is fixedly connected to the sample placement plate, and an inner ring of the turntable bearing is fixedly connected to the sample placement plate.

[0014] Preferably, the turntable mechanism also includes a pad provided under the sample dropping plate, on which a positioning pin and a limit pin are fixedly arranged, and a round hole and a waist-shaped hole are arranged on the sample dropping plate; the round hole is rotatably sleeved on the positioning pin to prevent the sample dropping plate from linearly moving on the pad; the waist-shaped hole is sleeved on the limit pin to prevent the sample dropping plate from rotating relative to the positioning pin.

[0015] Preferably, the sample-laying disk includes a disk body and a toothed disk coaxially fixed to the disk body, and the outer peripheral surface of the toothed disk is a tooth surface; the driving mechanism includes a linear driving device, and an elastic pin is arranged at the output end of the linear driving device, and the elastic pin fits with the tooth surface by utilizing its elasticity; when each of the sample-laying holes is aligned with the sample-falling holes respectively, the elastic pin extends into the tooth groove of the tooth surface; the linear driving device drives the elastic pin to move linearly to push the teeth on the tooth surface, thereby driving the toothed disk to rotate.

[0016] Preferably, the tooth is formed by connecting a first inclined surface and a second inclined surface, the length of the first inclined surface is greater than that of the second inclined surface, and the tooth surface is formed by connecting the first inclined surface and the second inclined surface in sequence along the circumferential direction.

[0017] Preferably, the linear drive device includes a sample feeding mechanism and a slider mechanism; the sample feeding mechanism includes a sample dropping head and a driver that outputs linear motion, a linear guide is arranged above the sample dropping head, and a sample dropping head channel is arranged through the sample dropping head; the slider mechanism includes a slider fixedly connected to the output end of the driver, the slider is slidably connected to the linear guide, the elastic pin is arranged on the top surface of the slider, and a slider channel is arranged through the slider; when each of the sample placement holes is respectively aligned with the sample dropping hole, the sample dropping hole, the slider channel and the sample dropping head channel are connected in sequence from top to bottom.

[0018] Preferably, a roller is rotatably arranged on the side of the sliding block, and the roller is arranged in a guide groove of the linear guide rail.

[0019] An element analyzer comprises the above sample placing and dropping mechanism.

[0020] The sample placing and dropping mechanism provided by the present invention comprises a turntable mechanism and a driving mechanism. The turntable mechanism comprises a sample dropping plate and a sample placing plate rotatably connected to the top of the sample dropping plate, the sample dropping hole is arranged through the sample dropping plate, and at least two sample placing holes are arranged in sequence on the sample placing plate around its rotation center line. One of the bottom surface of the sample placing plate and the top surface of the sample dropping plate is a positioning surface and an elastic positioning member is arranged on the other, and a positioning groove is arranged on the positioning surface. The driving mechanism is used to drive the sample placing plate to rotate so that each sample placing hole moves in sequence to align with the sample dropping hole, and when each sample placing hole is aligned with the sample dropping hole, the elastic positioning member is ejected and plugged into the positioning groove, and when each sample placing hole deviates from the sample dropping hole, the elastic positioning member is compressed by the positioning surface to avoid hindering the rotation of the sample placing plate.

[0021] When in use, the sample placing plate rotates under the drive of the driving mechanism. When a sample placing hole is aligned with a sample drop hole, the driving mechanism stops driving, and the elastic positioning member pops in and plugs into the positioning slot, and the sample in the sample placing hole falls into the sample drop hole. Afterwards, the driving mechanism is started again, the sample placing plate rotates again, and the elastic positioning member is compressed by the positioning surface to avoid hindering the rotation of the sample placing plate, so that the next sample placing hole is aligned with the sample drop hole. After the driving mechanism stops driving, the elastic positioning member pops in and plugs into the positioning slot again, and the sample placing plate is positioned again. Repeat the above process so that the samples in each sample placing hole can fall into the sample drop hole in turn.

[0022] Due to the coordinated positioning of the elastic positioning member and the positioning groove, the placement holes on the placement plate and the sample drop holes on the sample drop plate can be aligned each time and remain in the aligned position, thereby realizing reliable positioning of the placement plate when it stops. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention 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 embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 A top view of a specific embodiment 1 of the sample placing and placing mechanism provided by the present invention;

[0025] Figure 2 It is a front view of a specific embodiment 1 of the sample placing and dropping mechanism provided by the present invention;

[0026] Figure 3 It is a top view of the sample feeding mechanism in the specific embodiment 1 of the sample placing and dropping mechanism provided by the present invention;

[0027] Figure 4 It is a side view of the sample feeding mechanism in the specific embodiment 1 of the sample placing and dropping mechanism provided by the present invention;

[0028] Figure 5 It is a top view of the turntable mechanism in the specific embodiment 1 of the sample placing and placing mechanism provided by the present invention;

[0029] Figure 6 for Figure 5 AA section view;

[0030] Figure 7 for Figure 5 BB cross-sectional view;

[0031] Figure 8 It is a bottom view of the turntable mechanism in the specific embodiment 1 of the sample placing and dropping mechanism provided by the present invention;

[0032] Fig. 9 It is a cross-sectional view of the toothed disc in the specific embodiment 1 of the sample placing and dropping mechanism provided by the present invention;

[0033] Fig.10 for Fig. 9 A magnified view of point I;

[0034] Fig.11 It is a bottom view of the toothed disc in the specific embodiment 1 of the sample placing and dropping mechanism provided by the present invention;

[0035] Fig.12 A top view of a sample placing plate in a specific embodiment 1 of a sample placing and placing mechanism provided by the present invention;

[0036] Fig.13 It is a bottom view of the sample placing plate in the specific embodiment 1 of the sample placing and dropping mechanism provided by the present invention;

[0037] Fig.14 It is a front view of the sample placing plate in the specific embodiment 1 of the sample placing and dropping mechanism provided by the present invention;

[0038] Fig.15 A top view of the sample placement plate in the first specific embodiment of the sample placement mechanism provided by the present invention;

[0039] Fig.16 It is a bottom view of the sample placement plate in the specific embodiment 1 of the sample placement and placement mechanism provided by the present invention;

[0040] Fig.17 A cross-sectional view of a sample placement plate in a specific embodiment 1 of a sample placement mechanism provided by the present invention;

[0041] Fig.18 It is a front view of the elastic positioning member in the specific embodiment 1 of the sample placing and dropping mechanism provided by the present invention;

[0042] Fig.19 A top view of the elastic positioning member in the specific embodiment 1 of the sample placing and dropping mechanism provided by the present invention;

[0043] Fig. 20A top view of a turntable bearing in a specific embodiment 1 of a sample placing and dropping mechanism provided by the present invention;

[0044] Fig.21 It is a cross-sectional view of the turntable bearing in the specific embodiment 1 of the sample placing and dropping mechanism provided by the present invention;

[0045] Fig. 22 A top view of the slider mechanism in the first specific embodiment of the sample placing and dropping mechanism provided by the present invention;

[0046] Fig.23 for Fig. 22 AA section view;

[0047] Fig.24 for Fig.23 BB cross-sectional view.

[0048] Reference numerals:

[0049] Turntable mechanism 1, toothed disc 11, first inclined surface 111, second inclined surface 112, sample drop disc 12, sample drop hole 121, waist-shaped hole 122, disc body 13, sample placement hole 131, positioning groove 132, elastic positioning member 14, steel ball 141, turntable bearing 15, backing plate 16, limit pin 161, positioning pin 162, fixed mandrel 17, sample placement disc 18;

[0050] Slider mechanism 2, fixed block 21, pressure plate 211, detent pin inner hole 212, elastic pin 22, detent pin 221, spring 222, slider 23, slider channel 231, slider connecting plate 24, slider connecting pin 25, bearing 26, rotating shaft 27, window 28;

[0051] Sample delivery mechanism 3 , sample drop head 31 , sample drop head channel 311 , cylinder 32 , cylinder frame 33 , linear guide rail 34 . DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] The core of the present invention is to provide a sample placing and dropping mechanism, which can realize reliable positioning of the sample placing plate when the sample placing plate stops rotating. Another core of the present invention is to provide an element analyzer including the sample placing and dropping mechanism, which can realize reliable positioning of the sample placing plate when the sample placing plate stops rotating.

[0054] In the specific embodiment 1 of the sample placing and dropping mechanism provided by the present invention, please refer to Figures 1 to 24 , including a turntable mechanism 1 and a driving mechanism.

[0055] The turntable mechanism 1 includes a sample tray 12 and a sample placing tray 18 rotatably connected to the sample tray 12. A sample placing hole 121 is provided through the sample tray 12. Specifically, one sample placing hole 121 is provided on the sample tray 12. At least two sample placing holes 131 are sequentially provided on the sample placing tray 18 around its rotation center line.

[0056] One of the bottom surface of the sample placing plate 18 and the top surface of the sample dropping plate 12 is a positioning surface and the other is provided with an elastic positioning member 14, and the positioning surface is provided with a positioning groove 132. Specifically, in this embodiment, the positioning groove 132 is provided on the bottom surface of the sample placing plate 18, and the elastic positioning member 14 is provided on the top surface of the sample dropping plate 12.

[0057] The driving mechanism is used to drive the sample plate 18 to rotate so that each sample hole 131 moves in sequence to align with the sample hole 121, and the sample in the sample hole 131 aligned with the sample hole 121 will fall into the sample hole 121 under the action of gravity.

[0058] When each sample hole 131 is aligned with the sample hole 121, the elastic positioning member 14 is inserted into the positioning groove 132. When each sample hole 131 deviates from the sample hole 121, the elastic positioning member 14 is compressed by the positioning surface to avoid hindering the sample plate 18 from rotating.

[0059] When in use, the sample plate 18 rotates under the drive of the driving mechanism. When a sample hole 131 is aligned with the sample hole 121, the driving mechanism stops driving, and the elastic positioning member 14 pops up and plugs into the positioning groove 132, and the sample in the sample hole 131 falls into the sample hole 121. After that, the driving mechanism is started again, the sample plate 18 rotates again, and the elastic positioning member 14 is compressed by the positioning surface to avoid hindering the rotation of the sample plate 18, so that the next sample hole 131 is aligned with the sample hole 121. After the driving mechanism stops driving, the elastic positioning member 14 pops up and plugs into the positioning groove 132 again, and the sample plate 18 is positioned again. Repeat the above process so that the samples in each sample hole 131 can fall into the sample hole 121 in sequence.

[0060] In this embodiment, due to the coordinated positioning of the elastic positioning member 14 and the positioning groove 132, the sample placement hole 131 on the sample placement plate 18 can be aligned with the sample placement hole 121 on the sample placement plate 12 each time and remain in the aligned position unchanged, thereby achieving reliable positioning of the sample placement plate 18 when it stops.

[0061] Furthermore, if Fig. 9 and Fig.10 As shown, the positioning groove 132 is a tapered hole, and the positioning groove 132 has an inclined surface. When the sample hole 131 aligned with the sample hole 121 rotates away from the sample hole 121, the inclined surface can gradually compress the elastic positioning member 14 to improve the smoothness of the rotation of the sample plate 18.

[0062] Furthermore, if Fig.15 , Fig.18 and Fig.19 The elastic positioning member 14 is an elastic bead plug, specifically including a steel ball 141 and a compression spring for pressing the steel ball 141 toward the positioning surface. Since the steel ball 141 is a sphere, the smoothness of the rotation of the sample plate 18 can be further improved. Of course, in other embodiments, the positioning groove 132 can also be a square groove, which can also cooperate with the steel ball 141 to make the sample plate 18 rotate smoothly.

[0063] Furthermore, if Figure 6 , Figure 7 , Fig. 20 and Fig.21 As shown, the turntable mechanism 1 also includes a turntable bearing 15, the outer ring of the turntable bearing 15 is fixedly connected to the sample placing plate 18, specifically fixed by a pin. The inner ring of the turntable bearing 15 is fixedly connected to the sample placing plate 12, specifically fixed by a pin. Through the connection of the turntable bearing 15, the smoothness of the rotation of the sample placing plate 18 can be ensured.

[0064] Furthermore, if Figure 6 , Fig.15 and Fig.16 As shown, the turntable mechanism 1 also includes a pad 16 disposed below the sample tray 12. A positioning pin 162 and a stop pin 161 are fixedly disposed on the pad 16, and a round hole and a waist-shaped hole 122 are disposed on the sample tray 12. The round hole is rotatably sleeved on the positioning pin 162 to prevent the sample tray 12 from linearly moving on the pad 16, and the waist-shaped hole 122 is sleeved on the stop pin 161 to prevent the sample tray 12 from rotating relative to the positioning pin 162. Specifically, the center line of the positioning pin 162, the rotation center line of the sample tray 18, and the rotation center line of the turntable bearing 15 are colinearly disposed.

[0065] In this embodiment, the positioning pin 162 cooperates with the limiting pin 161 to achieve reliable positioning of the sample tray 12 on the pad 16, which can reduce the difficulty of processing and facilitate assembly.

[0066] Furthermore, the sample plate 18 includes a plate body 13 and a toothed plate 11 coaxially fixed to the plate body 13, and the outer peripheral surface of the toothed plate 11 is a toothed surface. The driving mechanism includes a linear driving device, and an elastic pin 22 is arranged at the output end of the linear driving device, and the elastic pin 22 uses its elasticity to fit with the toothed surface.

[0067] Among them, Figure 6 and Figure 7As shown, the toothed disc 11 and the disc body 13 are annular bodies, and the toothed disc 11 is fixedly arranged on the bottom surface of the disc body 13, specifically between the sample drop disc 12 and the disc body 13. The positioning groove 132 is arranged on the bottom surface of the toothed disc 11. The disc body 13 is fixedly connected to the outer ring of the turntable bearing 15. In addition, the sample placement hole 131 is formed by connecting the through hole penetrating the disc body 13 and the toothed disc 11. In addition, as shown in FIG. Figure 6 As shown, the fixed core shaft 17 is arranged in the middle through hole of the disc body 13 and fixed above the inner ring of the turntable bearing 15 so that the disc body 13 can rotate stably.

[0068] Specifically, the turntable bearing 15 is a plane rotary bearing, and the multi-layer disk body 13 can be placed on the sample plate 18 for matching use.

[0069] Specifically, a first virtual circle and a second virtual circle are set on the disk body 13 with the rotation center line of the disk body 13 as the center, each lofting hole 131 is evenly set on the first virtual circle along the circumferential direction, each positioning groove 132 is evenly set on the second virtual circle along the circumferential direction, and a third virtual circle is set on the toothed disk 11 with the rotation center line of the toothed disk 11 as the center, and each tooth groove is evenly set on the third virtual circle along the circumferential direction. The tooth grooves, lofting holes 131, and positioning grooves 132 are set in a one-to-one correspondence, and the centers of the corresponding lofting holes 131, the centers of the positioning grooves 132, and the bottoms of the tooth grooves are located on the same plane where the rotation center line of the disk body 13 is located.

[0070] In addition, one or at least two elastic positioning members 14 can be provided, so that one elastic positioning member 14 is plugged into a corresponding positioning groove 132 each time, or multiple elastic members are plugged into different positioning grooves 132 at the same time, for example, each elastic positioning member 14 is plugged into each positioning groove 132 one by one.

[0071] Among them, Figure 1 As shown, when each lofting hole 131 is aligned with the sample-dropping hole 121, the elastic pin 22 extends into the tooth groove of the tooth surface, cooperates with the insertion between the elastic positioning member 14 and the positioning groove 132, and synchronously positions the lofting disk 18, thereby improving the reliable positioning of the lofting disk 18 when it stops. The linear drive device drives the elastic pin 22 to move linearly to push the teeth on the tooth surface, thereby driving the toothed disk 11 to rotate. Specifically, the linear motion direction output by the linear drive device, the telescopic direction of the elastic pin 22, and the rotation centerline direction of the lofting disk 18 are perpendicular to each other.

[0072] like Figure 1 As shown, in this state, the linear drive device is started, the elastic pin 22 moves linearly and pushes the teeth, which can drive the sample plate 18 to rotate. At the same time, the elastic pin 22 is compressed and deformed. As the toothed disc 11 rotates, the elastic pin 22 will extend into the next tooth groove of the toothed disc 11.

[0073] Furthermore, if Figure 1 and Fig.11 As shown, the teeth are formed by the first inclined surface 111 and the second inclined surface 112 butting together, the length of the first inclined surface 111 is greater than the second inclined surface 112, and the tooth surface is formed by the first inclined surface 111 and the second inclined surface 112 butting together in sequence along the circumferential direction. Specifically, according to the control of the rotation direction of the toothed disc 11, the elastic pin 22 can be moved to the next tooth groove along the first inclined surface 111. Since the first inclined surface 111 is long and has a large angle, the elastic pin 22 can be slowly compressed, ensuring that the elastic pin 22 can be smoothly extended and retracted, thereby improving the smoothness of the rotation of the sample plate 18.

[0074] Furthermore, if Figure 1 As shown, the linear drive device includes a sample feeding mechanism 3 and a slider mechanism 2.

[0075] Among them, the sample delivery mechanism 3 is the power and support fixed reference of the entire sample placement mechanism. Figure 3 and Figure 4 As shown, the sample delivery mechanism 3 includes a sample drop head 31 and a driver for outputting linear motion, a linear guide rail 34 is arranged above the sample drop head 31, and a sample drop head channel 311 is arranged through the sample drop head 31. Specifically, the driver is a cylinder 32, the sample drop head 31 is fixedly connected to the cylinder frame 33, the shell of the cylinder 32 is fixedly connected to the cylinder frame 33 and the piston rod is its output shaft. The pad 16 is fixed to the sample drop head 31.

[0076] Among them, Fig. 22 , Fig.23 and Fig.24 As shown, the slider mechanism 2 includes a slider 23 fixedly connected to the output end of the driver, and the slider 23 is slidably connected to the linear guide 34. The elastic pin 22 is arranged on the top surface of the slider 23, and the slider channel 231 is arranged through the slider 23. Specifically, the slider mechanism 2 includes a slider connecting plate 24, the slider connecting plate 24 is fixedly connected to the piston rod of the cylinder 32, and the slider 23 is connected through the slider connecting pin 25. In addition, a fixed block 21 is fixedly arranged above the slider 23, specifically connected by screws. The elastic pin 22 is arranged on the fixed block 21, specifically, the elastic pin 22 includes a pin 221 slidably connected to the pin inner hole 212 of the fixed block 21 and a spring 222 arranged in the pin inner hole 212, the spring 222 presses the pin 221 on the tooth surface, specifically, the pin 221 and the pin inner hole 212 have a small amount of shaking, and semi-automatic telescopic movement can be performed through the spring 222, and the spring 222 has a very small telescopic stroke. In addition, a window 28 is provided on the slider 23 , and the window 28 is specifically adhered to the slider 23 .

[0077] When each sample-laying hole 131 is aligned with the sample-dropping hole 121, the sample-dropping hole 121, the slider channel 231 and the sample-dropping head channel 311 are sequentially connected from top to bottom, so that the sample in the sample-laying hole 131 can sequentially fall through the sample-dropping hole 121, the slider channel 231 and the sample-dropping head channel 311. The arrangement of the slider 23 can improve the stability of the movement of the elastic pin 22.

[0078] Furthermore, if Figure 4 and Fig. 22 As shown, a roller is rotatably arranged on the side of the slider 23, specifically connected to the bearing 26 of the slider 23 through a rotating shaft 27. The roller is arranged in the guide groove of the linear guide rail 34, which can reduce the friction between the slider 23 and the linear guide rail 34.

[0079] The sample placing and dropping mechanism provided in this embodiment can cooperate to complete various sample placing and dropping to carry out the sample delivery process of experimental analysis through the linkage of the turntable mechanism 1, the slider mechanism 2 and the sample delivery mechanism 3.

[0080] The movement of the whole set of sample placement and sample dropping mechanism can be divided into sample dropping action and reset action:

[0081] 1. The order of sample placement is as follows: Figure 1 As shown, the cylinder 32 retracts to the right, and the slider 23 is dragged to the right by the slider connecting plate 24. The elastic pin 22 is pulled by the slider 23 to push the toothed disk 11 on the turntable mechanism 1, so that the sample plate 18 rotates one hole position, and the elastic positioning member 14 installed on the sample drop plate 12 presses against the positioning groove 132 at the bottom of the sample plate 18, clamping the sample plate 18 for positioning, and the sample in the sample hole 131 on the sample plate 18 that is aligned with the sample drop hole 121 of the sample drop plate 12 falls off, thereby achieving the purpose of sample drop.

[0082] 2. The reset action sequence is as follows: Figure 1 As shown, the cylinder 32 extends to the left and pushes the slider 23 to move through the slider connecting plate 24. The elastic pin 22 withdraws from the tooth groove of the toothed disc 11 while shrinking due to the inclined surface of the tooth groove. After the elastic pin 22 completely withdraws from the tooth groove, it extends into the next tooth groove under the action of the elastic force to complete the reset.

[0083] In addition to the above-mentioned sample placement mechanism, the present invention also provides an element analyzer, which includes a sample placement mechanism, which can be specifically a sample placement mechanism provided in any of the above embodiments, and the beneficial effects can be referred to the above embodiments accordingly. The structures of other parts of the element analyzer can be referred to the prior art, and will not be repeated herein.

[0084] It should be noted that when an element is said to be "fixed" to another element, it may be directly on the other element or there may be an intermediate element. When an element is said to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0085] The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0086] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0087] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0088] The above is a detailed introduction to the sample placing and dropping mechanism and element analyzer provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A sample placement mechanism, It is characterized in that It comprises a turntable mechanism (1) and a driving mechanism; The turntable mechanism (1) comprises a sample drop plate (12) and a sample placement plate (18) rotatably connected to the sample drop plate (12), a sample drop hole (121) being provided through the sample drop plate (12), and at least two sample placement holes (131) being provided in sequence on the sample placement plate (18) around its rotation center line; One of the bottom surface of the sample placing plate (18) and the top surface of the sample placing plate (12) is a positioning surface and an elastic positioning member (14) is provided on the other, and a positioning groove (132) is provided on the positioning surface; The driving mechanism is used to drive the sample placing plate (18) to rotate so that each of the sample placing holes (131) moves in sequence to align with the sample dropping hole (121), and when each of the sample placing holes (131) is aligned with the sample dropping hole (121), the elastic positioning member (14) is ejected into and inserted into the positioning groove (132), and when each of the sample placing holes (131) deviates from the sample dropping hole (121), the elastic positioning member (14) is compressed by the positioning surface to avoid hindering the rotation of the sample placing plate (18); The elastic positioning member (14) comprises a steel ball (141) and a compression spring used for pressing the steel ball (141) toward the positioning surface; The turntable mechanism (1) further comprises a turntable bearing (15), the outer ring of the turntable bearing (15) being fixedly connected to the sample placing plate (18), and the inner ring of the turntable bearing (15) being fixedly connected to the sample dropping plate (12); the turntable mechanism (1) further comprises a pad (16) arranged below the sample dropping plate (12), a positioning pin (162) and a limit pin (161) being fixedly arranged on the pad (16), and a round hole and a waist-shaped hole (122) being arranged on the sample dropping plate (12); the round hole is rotatably sleeved on the positioning pin (162) to prevent the sample dropping plate (12) from linearly moving on the pad (16); the waist-shaped hole (122) is sleeved on the limit pin (161) to prevent the sample dropping plate (12) from rotating relative to the positioning pin (162); The sample-laying disc (18) comprises a disc body (13) and a toothed disc (11) coaxially fixed to the disc body (13), the outer peripheral surface of the toothed disc (11) being a toothed surface; the driving mechanism comprises a linear driving device, an elastic pin (22) is arranged at the output end of the linear driving device, the elastic pin (22) is in close contact with the toothed surface by utilizing its elasticity; when each of the sample-laying holes (131) is aligned with the sample-falling holes (121), the elastic pin (22) extends into the tooth groove of the toothed surface; the linear driving device drives the elastic pin (22) to move linearly to push the teeth on the toothed surface, thereby driving the toothed disc (11) to rotate.

2. The sample placing and placing mechanism according to claim 1, It is characterized in that The positioning groove (132) is a tapered hole.

3. The sample placing and placing mechanism according to claim 1 or 2, It is characterized in that The tooth is formed by a first inclined surface (111) and a second inclined surface (112) butted together, the first inclined surface (111) is longer than the second inclined surface (112), and the tooth surface is formed by the first inclined surface (111) and the second inclined surface (112) being butted together in sequence along the circumferential direction.

4. The sample placing and placing mechanism according to claim 1 or 2, It is characterized in that The linear drive device comprises a sample feeding mechanism (3) and a slider mechanism (2); the sample feeding mechanism (3) comprises a sample drop head (31) and a driver for outputting linear motion, a linear guide rail (34) is arranged above the sample drop head (31), and a sample drop head channel (311) is provided through the sample drop head (31); the slider mechanism (2) comprises a slider (23) fixedly connected to the output end of the driver, the slider (23) is slidably connected to the linear guide rail (34), the elastic pin (22) is arranged on the top surface of the slider (23), and a slider channel (231) is provided through the slider (23); when each of the sample placement holes (131) is aligned with the sample drop hole (121), the sample drop hole (121), the slider channel (231) and the sample drop head channel (311) are sequentially connected from top to bottom.

5. The sample placing and placing mechanism according to claim 4, It is characterized in that A roller is rotatably arranged on the side of the slider (23), and the roller is arranged in a guide groove of the linear guide rail (34).

6. An element analyzer, It is characterized in that It comprises the sample placing and dropping mechanism as described in any one of claims 1 to 5.

Images