CN113884696A

CN113884696A - Lofting and sample-setting mechanism and element analyzer

Info

Publication number: CN113884696A
Application number: CN202111319424.0A
Authority: CN
Inventors: 何彬; 徐开群; 康希平; 罗建文
Original assignee: Changsha Kaiyuan Instruments Co Ltd
Current assignee: Changsha Kaiyuan Instruments Co Ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-01-04

Abstract

The invention discloses a lofting and sample-setting mechanism and an element analyzer. The lofting and setting-out mechanism comprises a turntable mechanism and a driving mechanism. The rotary table mechanism comprises a sample dropping plate and a sample placing plate which is rotatably connected above the sample dropping plate, sample dropping holes are arranged on the sample dropping plate in a penetrating mode, and at least two sample placing holes are sequentially arranged on the sample placing plate around the rotating center line of the sample placing plate. One of the bottom surface of the sample placing plate and the top surface of the sample dropping plate is a positioning surface, an elastic positioning piece is arranged on the other one of the bottom surface of the sample placing plate and the top surface of the sample dropping plate, and a positioning groove is arranged on the positioning surface. The driving mechanism is used for driving the lofting disc to rotate so that each lofting hole sequentially moves to be aligned with the corresponding lofting hole, when each lofting hole is aligned with the corresponding lofting hole, the elastic positioning piece is inserted into the positioning groove in an elastic mode and is inserted into the positioning groove, and when each lofting hole deviates from the corresponding lofting hole, the elastic positioning piece is compressed by the positioning face to avoid blocking the rotation of the lofting disc. Due to the cooperation of the elastic positioning piece and the positioning groove, the reliable positioning of the lofting disc during stalling can be realized.

Description

Lofting and sample-setting mechanism and element analyzer

Technical Field

The invention relates to the technical field of detection equipment, in particular to a lofting and setting-out mechanism and an element analyzer.

Background

The lofting and sample-dropping mechanism of the element analyzer in the coal quality detecting instrument industry in the current market is complex in structure and poor in reliability. A typical lofting and setting mechanism consists of three parts: carousel mechanism, slider mechanism and sample presentation mechanism, through the mutual linkage cooperation of these three mechanisms accomplish various lofting and setting out the appearance and carry out experimental analysis's sample presentation flow.

The rotary table mechanism comprises a sample dropping disc and a sample placing disc connected above the sample dropping disc in a rotating mode, sample placing holes are formed in the sample placing disc, sample dropping holes are formed in the sample dropping disc, and the sample sending mechanism drives the sample dropping disc to rotate through the driving slider mechanism, so that the sample dropping holes are sequentially aligned with the sample placing holes in the sample dropping disc, and samples in the sample dropping holes sequentially drop to the sample dropping holes. However, each time the stack tray is stopped, the sample drop hole is difficult to maintain a state of alignment with the stack hole, and the dropping of the sample is affected.

Therefore, how to achieve reliable positioning when the lofting disc stops is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, the present invention provides a lofting and setting mechanism, which can reliably position a lofting tray when the lofting tray stops rotating. Another object of the present invention is to provide an elemental analyzer including the lofting and setting mechanism described above, which can achieve reliable positioning of a lofting reel when it is stalled.

In order to achieve the purpose, the invention provides the following technical scheme:

a lofting and setting-out mechanism comprises a turntable mechanism and a driving mechanism;

the rotary disc mechanism comprises a sample dropping disc and a sample placing disc which is rotationally connected above the sample dropping disc, sample dropping holes are arranged on the sample dropping disc in a penetrating mode, and at least two sample placing holes are sequentially arranged on the sample placing disc around the rotating center line of the sample placing disc;

one of the bottom surface of the sample placing disc and the top surface of the sample dropping disc is a positioning surface, an elastic positioning piece is arranged on the other of the bottom surface of the sample placing disc and the top surface of the sample dropping disc, and a positioning groove is arranged on the positioning surface;

the driving mechanism is used for driving the lofting disc to rotate so that the lofting holes sequentially move to be aligned with the sample dropping holes, when the lofting holes are respectively aligned with the sample dropping holes, the elastic positioning piece is inserted into the positioning groove in an elastic mode and is inserted into the positioning groove, and when the lofting holes deviate from the sample dropping holes, the elastic positioning piece is compressed by the positioning face to avoid blocking the rotation of the lofting disc.

Preferably, the positioning groove is a taper hole.

Preferably, the elastic positioning piece comprises a steel ball and a pressure spring for pressing the steel ball towards the positioning surface.

Preferably, the turntable mechanism further comprises a turntable bearing, an outer ring of the turntable bearing is fixedly connected with the sample placing disc, and an inner ring of the turntable bearing is fixedly connected with the sample dropping disc.

Preferably, the turntable mechanism further comprises a base plate arranged below the sample dropping plate, a positioning pin and a limiting pin are fixedly arranged on the base plate, and a round hole and a waist-shaped hole are formed in the sample dropping plate; the round hole is rotatably sleeved on the positioning pin so as to prevent the sample dropping plate from linearly moving on the base plate; waist shape pot head is located the spacer pin to avoid the appearance dish that falls rotates for the locating pin.

Preferably, the lofting disc comprises a disc body and a fluted disc coaxially fixed on the disc body, and the outer peripheral surface of the fluted disc is a tooth surface; the driving mechanism comprises a linear driving device, an output end of the linear driving device is provided with an elastic pin, and the elastic pin is in fit with the tooth surface by utilizing elasticity of the elastic pin; when the sample placing holes are respectively aligned with the sample dropping holes, the elastic pin extends into the tooth socket of the tooth surface; the linear driving device drives the elastic pin to linearly move so as to push the teeth on the tooth surface and further drive the fluted disc to rotate.

Preferably, the tooth is formed by butt joint of a first inclined plane and a second inclined plane, the length of the first inclined plane is larger than that of the second inclined plane, and the tooth surface is formed by sequentially butt joint of the first inclined plane and the second inclined plane along the circumferential direction.

Preferably, the linear driving device comprises a sample feeding mechanism and a sliding block mechanism; the sample feeding mechanism comprises a sample dropping head and a driver for outputting linear motion, a linear guide rail is arranged above the sample dropping head, and a sample dropping head channel is arranged on the sample dropping head in a penetrating manner; the sliding block mechanism comprises a sliding block fixedly connected to the output end of the driver, the sliding block is connected to the linear guide rail in a sliding mode, the elastic pin is arranged on the top surface of the sliding block, and a sliding block channel is arranged on the sliding block in a penetrating mode; when the sample placing holes are respectively aligned with the sample falling holes, the slider channels and the sample falling head channels are sequentially communicated from top to bottom.

Preferably, the side surface of the sliding block is rotatably provided with a roller, and the roller is arranged in a guide groove of the linear guide rail.

An element analyzer comprises the lofting and setting-out mechanism.

The lofting and setting-out mechanism provided by the invention comprises a turntable mechanism and a driving mechanism. The rotary table mechanism comprises a sample dropping plate and a sample placing plate which is rotatably connected above the sample dropping plate, sample dropping holes are arranged on the sample dropping plate in a penetrating mode, and at least two sample placing holes are sequentially arranged on the sample placing plate around the rotating center line of the sample placing plate. One of the bottom surface of the sample placing plate and the top surface of the sample dropping plate is a positioning surface, an elastic positioning piece is arranged on the other one of the bottom surface of the sample placing plate and the top surface of the sample dropping plate, and a positioning groove is arranged on the positioning surface. The driving mechanism is used for driving the lofting disc to rotate so that each lofting hole sequentially moves to be aligned with the corresponding lofting hole, when each lofting hole is aligned with the corresponding lofting hole, the elastic positioning piece is inserted into the positioning groove in an elastic mode and is inserted into the positioning groove, and when each lofting hole deviates from the corresponding lofting hole, the elastic positioning piece is compressed by the positioning face to avoid blocking the rotation of the lofting disc.

When the automatic sample placing device is used, the sample placing disc rotates under the driving of the driving mechanism, when the sample placing holes are aligned with the sample falling holes, the driving mechanism stops driving, the elastic positioning pieces are inserted into the positioning grooves in an elastic mode, and samples in the sample placing holes fall into the sample falling holes. And then, the driving mechanism is started again, the lofting disc rotates again, and the elastic positioning piece is compressed by the positioning surface to avoid blocking the rotation of the lofting disc, so that the next lofting hole is aligned with the lofting hole. After the driving mechanism stops driving, the elastic positioning piece is inserted into the positioning groove in a bouncing manner again and is connected with the positioning groove, and the lofting disc is positioned again. The above processes are repeated, so that the samples in the sample placing holes can sequentially fall to the sample falling holes.

Due to the matched positioning of the elastic positioning piece and the positioning groove, the sample placing holes in the sample placing plate and the sample dropping holes in the sample dropping plate are aligned at the same aligned position at each time, and the reliable positioning of the sample placing plate during the stalling can be realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a top view of a first embodiment of a lofting and setting mechanism according to the present invention;

FIG. 2 is a front view of a first embodiment of a lofting and setting-out mechanism according to the present invention;

FIG. 3 is a top view of a sample presentation mechanism according to an embodiment of the lofting and setting mechanism of the present invention;

FIG. 4 is a side view of a sample presentation mechanism according to one embodiment of the lofting and setting mechanism of the present invention;

FIG. 5 is a top view of a turntable mechanism according to an embodiment of the lofting and setting-out mechanism of the present invention;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

FIG. 7 is a cross-sectional view B-B of FIG. 5;

FIG. 8 is a bottom view of a turntable mechanism in an embodiment of the lofting and setting-out mechanism provided in the present invention;

FIG. 9 is a cross-sectional view of a fluted disc in a lofting and setting-out mechanism according to an embodiment of the present invention;

FIG. 10 is an enlarged view at I of FIG. 9;

FIG. 11 is a bottom view of a middle toothed disc of the lofting and setting mechanism embodiment of the present invention;

FIG. 12 is a top view of a sample tray in a first embodiment of a setting out and setting out mechanism provided in the present invention;

FIG. 13 is a bottom view of a sample tray in one embodiment of a lofting and setting mechanism provided in the present invention;

FIG. 14 is a front view of a sample tray in a first embodiment of a setting out and setting out mechanism provided in the present invention;

FIG. 15 is a top view of a sample plate in a first embodiment of a lofting and setting mechanism according to the present invention;

FIG. 16 is a bottom view of a sample plate in a first embodiment of a lofting and sample-dropping mechanism provided in the present invention;

FIG. 17 is a cross-sectional view of a sample plate in a first embodiment of a lofting and sample-setting mechanism provided in the present invention;

FIG. 18 is a front view of an elastic positioning member in an embodiment of the lofting and setting mechanism of the present invention;

FIG. 19 is a top view of an elastic positioning member in an embodiment of the lofting and setting-out mechanism of the present invention;

FIG. 20 is a top view of a turntable bearing in an embodiment of the lofting and setting mechanism of the present invention;

FIG. 21 is a cross-sectional view of a turntable bearing in a lofting and setting-out mechanism according to an embodiment of the present invention;

FIG. 22 is a top view of a slider mechanism in one embodiment of the lofting mechanism of the present invention;

FIG. 23 is a cross-sectional view A-A of FIG. 22;

fig. 24 is a sectional view taken along line B-B of fig. 23.

Reference numerals:

the automatic sample setting device comprises a turntable mechanism 1, a fluted disc 11, a first inclined plane 111, a second inclined plane 112, a sample setting disc 12, a sample setting hole 121, a kidney-shaped hole 122, a disc body 13, a sample placing hole 131, a positioning groove 132, an elastic positioning piece 14, a steel ball 141, a turntable bearing 15, a backing plate 16, a limiting pin 161, a positioning pin 162, a fixing mandrel 17 and a sample setting disc 18;

the sliding block mechanism 2, a fixed block 21, a pressure plate 211, a shifting pin inner hole 212, an elastic pin 22, a shifting pin 221, a spring 222, a sliding block 23, a sliding block channel 231, a sliding block connecting plate 24, a sliding block connecting pin 25, a bearing 26, a rotating shaft 27 and a window 28;

the sample feeding mechanism 3, the sample dropping head 31, the sample dropping head channel 311, the air cylinder 32, the air cylinder frame 33 and the linear guide rail 34.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide a lofting and setting-out mechanism which can realize reliable positioning when a lofting disc stops rotating. The other core of the invention is to provide an element analyzer comprising the lofting and setting mechanism, which can realize reliable positioning when the lofting disc stops rotating.

In a first embodiment of the lofting and setting mechanism provided by the present invention, please refer to fig. 1 to 24, which include a turntable mechanism 1 and a driving mechanism.

The carousel mechanism 1 includes a sample tray 12 and a loft tray 18 rotatably attached above the sample tray 12. The sample dropping plate 12 is provided with sample dropping holes 121 in a penetrating manner, and specifically, the sample dropping plate 12 is provided with one sample dropping hole 121. At least two sample placing holes 131 are sequentially formed in the sample placing plate 18 around the rotation center line thereof.

One of the bottom surface of the sample tray 18 and the top surface of the sample tray 12 is a positioning surface on which the positioning groove 132 is formed, and the other is provided with the elastic positioning member 14. Specifically, in the present embodiment, the positioning groove 132 is disposed on the bottom surface of the loft tray 18, and the elastic positioning member 14 is disposed on the top surface of the sample tray 12.

The driving mechanism is used for driving the sample placing disc 18 to rotate, so that each sample placing hole 131 sequentially moves to be aligned with the sample dropping hole 121, and samples in the sample placing holes 131 aligned with the sample dropping holes 121 fall into the sample dropping holes 121 under the action of gravity.

When the sample placing holes 131 are aligned with the sample dropping holes 121, the elastic positioning member 14 is inserted into the positioning groove 132. When each sample aperture 131 is offset from the sample aperture 121, the elastic positioning member 14 is compressed by the positioning surface so as not to hinder the rotation of the sample tray 18.

In use, the loft tray 18 is rotated by the drive mechanism, and when the loft holes 131 are aligned with the sample-receiving holes 121, the drive mechanism stops driving, and the elastic positioning members 14 are inserted into the positioning grooves 132, so that the samples in the loft holes 131 fall into the sample-receiving holes 121. Thereafter, the drive mechanism is again actuated, the sample tray 18 is rotated again, and the elastic positioning member 14 is compressed by the positioning surface so as not to hinder the rotation of the sample tray 18, so that the next sample well 131 is aligned with the sample drop well 121. After the driving mechanism stops driving, the elastic positioning member 14 is inserted into the positioning groove 132 again, and the lofting tray 18 is positioned again. The above process is repeated so that the samples in the respective wells 131 can sequentially fall down to the wells 121.

In this embodiment, due to the matching positioning of the elastic positioning member 14 and the positioning groove 132, the sample placing holes 131 on the sample placing tray 18 and the sample dropping holes 121 on the sample dropping tray 12 are aligned and kept at the aligned positions, and the reliable positioning of the sample placing tray 18 during the stop of the rotation can be realized.

Further, as shown in fig. 9 and 10, the positioning groove 132 is a tapered hole, and the positioning groove 132 has an inclined surface, so that when the lofting hole 131 aligned with the lofting hole 121 rotates away from the lofting hole 121, the inclined surface can gradually compress the elastic positioning member 14, thereby improving the smoothness of the rotation of the lofting tray 18.

Further, as shown in fig. 15, 18 and 19, the elastic positioning member 14 is an elastic ball plug, and specifically includes a steel ball 141 and a pressure spring for pressing the steel ball 141 toward the positioning surface, and since the steel ball 141 is a sphere, the smoothness of rotation of the sample placing disk 18 can be further improved. Of course, in other embodiments, the positioning groove 132 may be a square groove, which can also cooperate with the steel ball 141 to allow the sample tray 18 to rotate smoothly.

Further, as shown in fig. 6, 7, 20 and 21, the turntable mechanism 1 further includes a turntable bearing 15, and an 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 with the sample dropping plate 12, and is fixed through a pin shaft. Through the connection of the turntable bearing 15, the smoothness of the rotation of the sample placing disc 18 can be ensured.

Further, as shown in fig. 6, 15 and 16, the turntable mechanism 1 further includes a backing plate 16 disposed below the sample tray 12. The backing plate 16 is fixedly provided with a positioning pin 162 and a limiting pin 161, and the sample dropping plate 12 is provided with a round hole and a waist-shaped hole 122. The positioning pin 162 is rotatably sleeved in the circular hole to prevent the sample plate 12 from moving linearly on the backing plate 16, and the limit pin 161 is sleeved in the slotted hole 122 to prevent the sample plate 12 from rotating relative to the positioning pin 162. Specifically, the center line of the positioning pin 162, the rotation center line of the loft tray 18, and the rotation center line of the turntable bearing 15 are arranged in line.

In this embodiment, through locating pin 162 and spacer pin 161 cooperation, can realize reducing the processing degree of difficulty to the reliable location of the sample plate 12 on backing plate 16, the assembly of being convenient for.

Further, the lofting disc 18 includes a disc body 13 and a toothed disc 11 coaxially fixed to the disc body 13, and an outer peripheral surface of the toothed disc 11 is a tooth surface. The driving mechanism comprises a linear driving device, an output end of the linear driving device is provided with an elastic pin 22, and the elastic pin 22 is in fit with the tooth surface by utilizing elasticity of the elastic pin.

As shown in fig. 6 and 7, the toothed disc 11 and the disc body 13 are annular bodies, and the toothed disc 11 is fixedly disposed on the bottom surface of the disc body 13, specifically, between the sample dropping disc 12 and the disc body 13. The positioning groove 132 is provided on the bottom surface of the toothed disc 11. The disc body 13 is fixedly connected with the outer ring of the turntable bearing 15. The sample placement hole 131 is formed by a through hole penetrating the disk 13 and the toothed disk 11. In addition, as shown in fig. 6, a fixing spindle 17 is provided in the central through hole of the disc body 13 and fixed above the inner race of the turntable bearing 15 so that the disc body 13 can stably rotate.

Specifically, the turntable bearing 15 is a plane rotation bearing, and the lofting disc 18 can be used with the multilayer disc body 13.

Specifically, a first virtual circle and a second virtual circle are arranged on the tray body 13 with the rotation center line of the tray body 13 as the center, the sampling holes 131 are uniformly arranged on the first virtual circle along the circumferential direction, the positioning grooves 132 are uniformly arranged on the second virtual circle along the circumferential direction, a third virtual circle is arranged on the fluted disc 11 with the rotation center line of the fluted disc 11 as the center, and the tooth grooves are uniformly arranged on the third virtual circle along the circumferential direction. The tooth grooves, the lofting holes 131 and the positioning grooves 132 are arranged in a one-to-one correspondence manner, and the centers of the corresponding lofting holes 131, the centers of the positioning grooves 132 and the groove bottoms of the tooth grooves are located on a plane where the rotation center line of the same tray body 13 is located.

In addition, the elastic positioning element 14 may be provided with one or at least two elastic positioning elements, so that one elastic positioning element 14 and one positioning groove 132 are correspondingly inserted at each time, or a plurality of elastic elements are respectively inserted with different positioning grooves 132 at the same time, for example, each elastic positioning element 14 and each positioning groove 132 are inserted in a one-to-one correspondence.

As shown in fig. 1, when the sample placing holes 131 are aligned with the sample dropping holes 121, the elastic pins 22 extend into the tooth grooves of the tooth surface, and the sample placing discs 18 are positioned synchronously by the insertion between the elastic positioning members 14 and the positioning grooves 132, so that the reliable positioning of the sample placing discs 18 during the stop of rotation is improved. The linear driving device drives the elastic pin 22 to move linearly to push the teeth on the tooth surface, and further drives the toothed disc 11 to rotate. Specifically, the linear motion direction output by the linear driving device, the stretching direction of the elastic pin 22 and the rotation center line direction of the lofting disc 18 are perpendicular to each other.

As shown in fig. 1, in this state, when the linear driving device is activated, the elastic pin 22 moves linearly and pushes the teeth, so as to drive the sample placing plate 18 to rotate, and at the same time, the elastic pin 22 deforms under pressure, and as the toothed plate 11 rotates, the elastic pin 22 extends into the next tooth groove of the toothed plate 11.

Further, as shown in fig. 1 and 11, the tooth is formed by abutting a first inclined surface 111 and a second inclined surface 112, the length of the first inclined surface 111 is greater than that of the second inclined surface 112, and the tooth surface is formed by sequentially abutting the first inclined surface 111 and the second inclined surface 112 in the circumferential direction. Specifically, according to the control of the rotation direction of the toothed disc 11, the elastic pin 22 can move to the next tooth groove along the first inclined plane 111, and because the length of the first inclined plane 111 is large and the angle of the inclined plane is large, the elastic pin 22 can be slowly compressed, so that the elastic pin 22 can stretch smoothly, and the smoothness of the rotation of the sample placing disc 18 is improved.

Further, as shown in fig. 1, the linear driving device includes a sample feeding mechanism 3 and a slider mechanism 2.

Wherein, the sample feeding mechanism 3 is the power and supporting and fixing reference of the whole lofting and sample dropping mechanism. As shown in fig. 3 and 4, the sample feeding mechanism 3 includes a sample dropping head 31 and a driver for outputting linear motion, a linear guide 34 is disposed above the sample dropping head 31, and a sample dropping head passage 311 is disposed on the sample dropping head 31. Specifically, the driver is a cylinder 32, the sample drop head 31 is fixedly connected to a cylinder frame 33, a housing of the cylinder 32 is fixedly connected to the cylinder frame 33, and the piston rod is an output shaft thereof. The pad 16 is fixed to the drop head 31.

As shown in fig. 22, 23 and 24, 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 disposed on the top surface of the slider 23, and a slider passage 231 is disposed through the slider 23. Specifically, the slider mechanism 2 includes a slider connecting plate 24, and the slider connecting plate 24 is fixedly connected to the piston rod of the cylinder 32 and connected to the slider 23 through a slider connecting pin 25. In addition, a fixed block 21 is fixedly arranged above the sliding block 23, and is connected with a screw specifically. The elastic pin 22 is arranged on the fixed block 21, specifically, the elastic pin 22 comprises a shifting pin 221 which is connected in a shifting pin inner hole 212 of the fixed block 21 in a sliding mode and a spring 222 which is arranged in the shifting pin inner hole 212, the spring 222 presses the shifting pin 221 on a tooth surface, specifically, the shifting pin 221 and the shifting pin inner hole 212 are matched, the shaking amount is small, semi-automatic telescopic movement can be carried out through the spring 222, and the spring 222 has a very small telescopic stroke. In addition, a window 28 is further arranged on the sliding block 23, and the window 28 is specifically adhered to the sliding block 23.

When each sample placing hole 131 is aligned with the sample dropping hole 121, the slider channel 231 and the sample dropping head channel 311 are sequentially communicated from top to bottom, so that a sample in the sample placing hole 131 can sequentially fall through the sample dropping hole 121, the slider channel 231 and the sample dropping head channel 311. Through the arrangement of the sliding block 23, the movement smoothness of the elastic pin 22 can be improved.

Further, as shown in fig. 4 and 22, a roller is rotatably disposed on a side surface of the slider 23, and specifically, a bearing 26 connected to the slider 23 through a rotating shaft 27. The rollers are disposed in the guide grooves of the linear guide 34, and can reduce the frictional force between the slider 23 and the linear guide 34.

The lofting and sample-dropping mechanism that this embodiment provided, through the mutual linkage of three mechanisms of carousel mechanism 1, slider mechanism 2, the mechanism of delivering samples 3, can cooperate the various lofting and sample-dropping of completion in order to carry out experimental analysis's the flow of delivering samples.

The movement of the whole set of lofting and setting-out mechanism can be divided into a lofting action and a resetting action:

the sample dropping operation sequence is as follows: as shown in figure 1, the air cylinder 32 retracts rightwards, the slider 23 is dragged to move rightwards through the slider connecting plate 24, the elastic pin 22 is pulled by the slider 23 to push the fluted disc 11 on the turntable mechanism 1, the lofting disc 18 rotates by a hole position, the elastic positioning piece 14 arranged on the lofting disc 12 is propped against the positioning groove 132 at the bottom of the lofting disc 18 to clamp the lofting disc 18 for positioning, and samples in the lofting holes 131 aligned with the lofting holes 121 of the lofting disc 12 on the lofting disc 18 fall off to achieve the purpose of lofting.

Secondly, the reset action sequence is as follows: as shown in FIG. 1, the cylinder 32 extends to the left, the slider 23 is pushed by the slider connecting plate 24 to move, the elastic pin 22 withdraws from the tooth groove of the fluted disc 11 and contracts under the action of the inclined plane of the tooth groove, and after the elastic pin 22 completely withdraws from the tooth groove, the elastic pin extends into the next tooth groove under the action of elasticity, so that the resetting is completed.

In addition to the lofting and setting-out mechanism, the invention further provides an elemental analyzer, which includes the lofting and setting-out mechanism, specifically, the lofting and setting-out mechanism provided in any one of the above embodiments, and the beneficial effects can be obtained by referring to the above embodiments. For the structure of other parts of the element analyzer, please refer to the prior art, and the description is omitted here.

It will be understood that when an element is referred to as being "secured" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The lofting and setting-out mechanism and the elemental analyzer provided by the present invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A lofting and setting-out mechanism is characterized by comprising a turntable mechanism (1) and a driving mechanism;

the rotary table mechanism (1) comprises a sample dropping disc (12) and a sample placing disc (18) which is rotatably connected above the sample dropping disc (12), sample dropping holes (121) are arranged on the sample dropping disc (12) in a penetrating mode, and at least two sample placing holes (131) are sequentially arranged on the sample placing disc (18) around the rotating center line of the sample placing disc;

one of the bottom surface of the sample placing disc (18) and the top surface of the sample dropping disc (12) is a positioning surface, the other is provided with an elastic positioning piece (14), and the positioning surface is provided with a positioning groove (132);

the driving mechanism is used for driving the sample placing disc (18) to rotate so that the sample placing holes (131) sequentially move to be aligned with the sample dropping holes (121), when the sample placing holes (131) are respectively aligned with the sample dropping holes (121), the elastic positioning piece (14) is inserted into the positioning groove (132) in an elastic mode and is inserted into the positioning groove, and when the sample placing holes (131) deviate from the sample dropping holes (121), the elastic positioning piece (14) is compressed by the positioning surface to avoid blocking the rotation of the sample placing disc (18).

2. A lofting and setting mechanism according to claim 1, wherein the positioning slot (132) is a tapered hole.

3. A lofting and setting mechanism according to claim 1, wherein the elastic positioning member (14) comprises a steel ball (141) and a compression spring for pressing the steel ball (141) towards the positioning surface.

4. A lofting and setting mechanism according to claim 1, wherein the turntable mechanism (1) further comprises a turntable bearing (15), an outer ring of the turntable bearing (15) is fixedly connected with the lofting disc (18), and an inner ring of the turntable bearing (15) is fixedly connected with the lofting disc (12).

5. The lofting and setting mechanism of claim 1, wherein the turntable mechanism (1) further comprises a backing plate (16) disposed below the sample setting disc (12), a positioning pin (162) and a limiting pin (161) are fixedly disposed on the backing plate (16), and a circular hole and a waist-shaped hole (122) are disposed on the sample setting disc (12); the round hole is rotatably sleeved on the positioning pin (162) so as to prevent the sample dropping disc (12) from linearly moving on the backing plate (16); the waist-shaped hole (122) is sleeved on the limiting pin (161) to prevent the sample dropping plate (12) from rotating relative to the positioning pin (162).

6. The lofting and setting mechanism according to any one of claims 1 to 5, wherein the lofting disc (18) comprises a disc body (13) and a fluted disc (11) coaxially fixed on the disc body (13), and the outer peripheral surface of the fluted disc (11) is a tooth surface; the driving mechanism comprises a linear driving device, an output end of the linear driving device is provided with an elastic pin (22), and the elastic pin (22) is in fit with the tooth surface by utilizing elasticity of the elastic pin; when the sample placing holes (131) are respectively aligned with the sample dropping holes (121), the elastic pin (22) extends into a tooth groove of the tooth surface; the linear driving device drives the elastic pin (22) to linearly move so as to push teeth on the tooth surface and further drive the fluted disc (11) to rotate.

7. A lofting and setting mechanism according to claim 6, wherein the tooth is formed by a first inclined plane (111) and a second inclined plane (112) in butt joint, the length of the first inclined plane (111) is larger than that of the second inclined plane (112), and the tooth surface is formed by the first inclined plane (111) and the second inclined plane (112) in butt joint in sequence along the circumferential direction.

8. A lofting and setting mechanism according to claim 6, wherein the linear drive comprises a sample feeding mechanism (3) and a slide block mechanism (2); the sample feeding mechanism (3) comprises a sample dropping head (31) and a driver for outputting linear motion, a linear guide rail (34) is arranged above the sample dropping head (31), and a sample dropping head channel (311) is arranged on the sample dropping head (31) in a penetrating manner; the sliding block mechanism (2) comprises a sliding block (23) fixedly connected to the output end of the driver, the sliding block (23) is connected to the linear guide rail (34) in a sliding mode, the elastic pin (22) is arranged on the top surface of the sliding block (23), and a sliding block channel (231) penetrates through the sliding block (23); when the sample placing holes (131) are respectively aligned with the sample dropping holes (121), the slider channels (231) and the sample dropping head channels (311) are sequentially communicated from top to bottom.

9. A lofting and setting mechanism according to claim 8, characterized in that the side of the slide (23) is rotatably provided with a roller wheel, which is arranged in a guide groove of the linear guide (34).

10. An elemental analyzer comprising the lofting and setting-out mechanism of any one of claims 1 to 9.