CN218272141U

CN218272141U - Automatic sample injector for full-automatic thermal desorption instrument

Info

Publication number: CN218272141U
Application number: CN202222208216.XU
Authority: CN
Inventors: 刘坤; 周磊; 李丽
Original assignee: Shanghai Taite Ruijie Information Technology Co ltd
Current assignee: Shanghai Taite Ruijie Information Technology Co ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-01-10
Anticipated expiration: 2032-08-22

Abstract

The utility model provides an automatic sample injector for full-automatic thermal desorption appearance, which comprises a bod, the fixed fixing base that is equipped with in bottom of organism one side, the center department on fixing base top rotates and is connected with the pivot, slewing mechanism is installed to the bottom of pivot, the top fixed mounting of pivot has the carousel, a plurality of standing grooves have been seted up to the avris equidistance on carousel top, and is a plurality of the inside of standing groove is inlayed and is equipped with size assorted sample bottle, the fixed kicking block that is equipped with in top of organism one side. The utility model discloses a slewing mechanism drives the rotation of carousel to when detecting the sampling bottle through photoelectric sensing switch, control slewing mechanism closes and opens telescopic machanism, inserts through telescopic machanism control sample straw and carries out the autoinjection in the sampling bottle, replaces traditional cooperation control sampling tube through X axle, Y axle and Z axle and removes the sample, has not only improved sampling efficiency, compares in traditional simple structure, and it is more simple and convenient to operate.

Description

Automatic sample injector for full-automatic thermal desorption instrument

Technical Field

The utility model belongs to the technical field of thermal desorption appearance, a autoinjector for full-automatic thermal desorption appearance is related to.

Background

The full-automatic thermal desorption instrument is an analytical instrument used in the fields of environmental science and technology and resource science and technology, and has the main function of carrying out secondary analysis on gas samples collected by a thermal desorption tube, an air bag, a Suma tank and the like.

According to the Chinese patent number 'CN 211402267U' an automatic sample injector and a full-automatic thermal desorption instrument for the full-automatic thermal desorption instrument are disclosed, namely, on one hand, by arranging a Z-axis assembly, an X-axis assembly and a Y-axis assembly, an adsorption tube grabbing sample feeding action and an adsorption tube returning action can be carried out in the upper area of a tray assembly, and on the other hand, by arranging a beam assembly, a cover taking assembly, a loading assembly and a valve island assembly, the adsorption tubes for sample feeding can be sequentially subjected to complete sample feeding and sample discharging actions such as cross-over, cap taking, loading, unloading, cap returning and the like, so that the full-automatic thermal desorption instrument is particularly suitable for the full-automatic thermal desorption instrument, the manual workload is greatly reduced, and time and labor are saved. In addition, the automatic sample injector has the advantages of convenience in loading/unloading, high grabbing success rate, capability of automatically detecting errors, simple structure, easiness in implementation and the like, and is convenient for practical application and popularization.

Above-mentioned technical scheme mainly realizes taking a sample the three-dimensional space motion of sample straw through the cooperation of X axle, Y axle and Z axle, adopts this kind of mode sample, and complex operation has increased the mechanical structure of autosampler, damages easily in the long-term use, overhauls the difficulty, influences the use.

Disclosure of Invention

An object of the utility model is to provide an autosampler for full-automatic thermal desorption appearance to solve the problem that provides among the above-mentioned background art.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an autosampler for full-automatic thermal desorption appearance, includes the organism, the fixed fixing base that is equipped with in bottom of organism one side, the center department on fixing base top rotates and is connected with the pivot, slewing mechanism is installed to the bottom of pivot, the top fixed mounting of pivot has the carousel, a plurality of standing grooves have been seted up to the avris equidistance on carousel top, and is a plurality of the inside of standing groove inlays and is equipped with size assorted sample bottle, the fixed kicking block that is equipped with in top of organism one side, the mounting groove has been seted up to the bottom of kicking block, the internally mounted of mounting groove has telescopic machanism, telescopic machanism's one end fixed mounting has the sample straw, the mid-mounting of organism one side has the photoelectric sensing switch, and slewing mechanism and telescopic machanism all pass through photoelectric sensing switch and external power supply electric connection. The purpose that sets up like this is through the rotation of slewing mechanism drive carousel to when detecting the sampling bottle through photoelectric sensing switch, control slewing mechanism closes and opens telescopic machanism, inserts through telescopic machanism control sample suction pipe and carries out autoinjection in the sampling bottle, replaces traditional cooperation control sampling tube through X axle, Y axle and Z axle and removes the sample, has not only improved sampling efficiency, compares in traditional simple structure, and it is more simple and convenient to operate.

In foretell autosampler for full-automatic thermal desorption appearance, slewing mechanism includes gear motor, driving gear and driven gear, the bottom fixed mounting of pivot has driven gear, the inside fixed mounting of fixing base has gear motor, gear motor's output shaft fixed mounting has the driving gear, the driving gear is connected with the driven gear meshing. The purpose of this arrangement is to drive the rotation of the turntable 4 through the arrangement of the rotating mechanism.

In foretell an autoinjector for full-automatic thermal desorption appearance, telescopic machanism includes servo motor, slider and lead screw, the spout has been seted up to one side cell wall of mounting groove, the inside sliding connection of spout has the slider, one side of slider and the outer wall fixed connection of sample straw, it is connected with the lead screw to rotate between the top of spout and the bottom, the middle part threaded connection of lead screw and slider, the top fixed mounting of spout has servo motor, servo motor's output shaft and the top fixed connection of lead screw. The purpose of setting up like this is through telescopic machanism's setting control sample suction's lift and injection.

In the automatic sample injector for the full-automatic thermal desorption instrument, the bottom end of the sampling suction pipe is aligned with the central position of the placement groove at the most lateral side. The purpose of setting up like this is to guarantee that the sample suction pipe can be accurate insert to in the sample bottle.

In foretell autoinjector for full-automatic thermal desorption appearance, the round hole has all been seted up, two to the both sides of standing groove inner wall the equal fixed mounting in inside of round hole has reset spring, two the equal fixed mounting in one end of reset spring has the arc piece, two the arc piece is connected with the outer wall contact of sampling bottle. The purpose that sets up like this is fixed the sample bottle through the arc piece, guarantees the stability of sample bottle in rotation and sample process.

In foretell an autoinjector for full-automatic thermal desorption appearance, the top fixed mounting of sample straw has the hose, the one end of hose and the feed end fixed connection of organism internally mounted's pump. The purpose of this arrangement is to bring the sample from the sample bottle into the detection zone.

Compared with the prior art, the utility model relates to an autosampler for full-automatic thermal desorption appearance's advantage does: through the rotation of slewing mechanism drive carousel to when detecting the sampling bottle through photoelectric sensing switch, control slewing mechanism closes and opens telescopic machanism, inserts through telescopic machanism control sample straw and carries out autoinjection in the sampling bottle, replace traditional cooperation control sampling tube through X axle, Y axle and Z axle and remove the sample, not only improved sampling efficiency, compare in traditional simple structure, it is more simple and convenient to operate.

Drawings

Fig. 1 is a schematic structural diagram of an autosampler for a full-automatic thermal desorption instrument.

Fig. 2 is an internal structure schematic diagram of an automatic sample injector for a full-automatic thermal desorption instrument.

Fig. 3 is a partial enlarged view of a part a in fig. 2 of an autosampler for a full-automatic thermal desorption apparatus of the present invention.

Fig. 4 is a schematic view of the cross-sectional structure of the rotary table of the automatic sample injector for the full-automatic thermal desorption apparatus of the present invention.

In the figure, 1, a machine body; 2. a fixed seat; 3. a top block; 4. a turntable; 5. sampling a bottle; 6. a reduction motor; 7. a rotating shaft; 8. a driving gear; 9. a driven gear; 10. a placement groove; 11. a photoelectric sensing switch; 12. mounting grooves; 13. a sampling straw; 14. a servo motor; 15. a chute; 16. a slider; 17. a screw rod; 18. an arc-shaped block; 19. a circular hole; 20. a return spring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figures 1-4, the utility model relates to an automatic sample injector for a full-automatic thermal desorption instrument, which comprises a machine body 1, a fixed seat 2 is fixedly arranged at the bottom of one side of the machine body 1, a rotating shaft 7 is rotatably connected at the center of the top end of the fixed seat 2, a rotating mechanism is arranged at the bottom end of the rotating shaft 7, a rotating disc 4 is fixedly arranged at the top end of the rotating shaft 7, a plurality of placing grooves 10 are equidistantly arranged at the side edge of the top end of the rotating disc 4, sampling bottles 5 with matched sizes are embedded in the plurality of placing grooves 10,

the rotating mechanism is arranged to drive the rotating disc 4 to rotate, and the sampling bottle 5 automatically enters a sampling station to sample by rotating the rotating disc 4;

the top of one side of the machine body 1 is fixedly provided with a top block 3, the bottom end of the top block 3 is provided with a mounting groove 12, a telescopic mechanism is arranged in the mounting groove 12, one end of the telescopic mechanism is fixedly provided with a sampling suction pipe 13, the middle of one side of the machine body 1 is provided with a photoelectric induction switch 11, and the rotating mechanism and the telescopic mechanism are both electrically connected with an external power supply through the photoelectric induction switch 11;

the work of the telescopic mechanism and the rotating mechanism is controlled by the photoelectric sensing switch 11, and when the sample enters a sample injection station, the rotation is stopped for sample injection.

As shown in fig. 1 and fig. 2, the utility model relates to an automatic sample injector for full-automatic thermal desorption instrument, the rotating mechanism includes a gear motor 6, a driving gear 8 and a driven gear 9, the bottom of a rotating shaft 7 is fixedly provided with the driven gear 9, the interior of a fixed seat 2 is fixedly provided with the gear motor 6, the output shaft of the gear motor 6 is fixedly provided with the driving gear 8, and the driving gear 8 is meshed with the driven gear 9;

the gear motor 6 drives the driving gear 8 to rotate, the driving gear 8 is meshed with the driven gear 9, so as to drive the rotating shaft 7 to rotate, and the rotating shaft 7 rotates to drive the rotating disc 4 to rotate

As shown in fig. 1, fig. 2 and fig. 3, the utility model relates to an automatic sample injector for full-automatic thermal desorption instrument, the telescopic mechanism includes servo motor 14, slider 16 and lead screw 17, spout 15 has been seted up to one side cell wall of mounting groove 12, the inside sliding connection of spout 15 has slider 16, one side of slider 16 and the outer wall fixed connection of sample suction pipe 13, rotate between the top of spout 15 and the bottom and be connected with lead screw 17, lead screw 17 and the middle part threaded connection of slider 16, the top fixed mounting of spout 15 has servo motor 14, the output shaft of servo motor 14 and the top fixed connection of lead screw 17;

the screw rod 17 is driven to rotate by the servo motor 14, the slide block 16 is driven to lift by the screw rod 17, and the sampling suction pipe 13 is driven to lift by the lifting of the slide block 16.

As shown in fig. 1, 2 and 3, the bottom end of the sampling pipette 13 is aligned with the center of the most lateral placement groove 10 to ensure that the sampling pipette 13 can enter the sampling bottle 5 precisely.

Round hole 19 has all been seted up to the both sides of standing groove 10 inner wall, and the equal fixed mounting in inside of two round holes 19 has reset spring 20, and the equal fixed mounting in one end of two reset spring 20 has arc piece 18, and two arc pieces 18 are connected with the outer wall contact of sampling bottle 5, fix sampling bottle 5 through arc piece 18, guarantee to rotate the in-process and sample the time stability of sampling bottle 5.

The top end of the sampling suction pipe 13 is fixedly provided with a hose, and one end of the hose is fixedly connected with the feed end of a material pumping pump arranged inside the machine body 1 for sample introduction operation.

When the automatic sample injector for the full-automatic thermal desorption instrument is used, firstly, a PLC (programmable logic controller) with the model of 'PLC FX3U-16 MR' manually passes through a machine body 1 to control a speed reducing motor 6 to work, the speed reducing motor 6 works to drive a driving gear 8 to rotate, the driving gear 8 is meshed with a driven gear 9, so that a rotating shaft 7 is driven to rotate, a rotating disc 4 is driven to rotate through the rotating shaft 7, when a photoelectric induction switch 11 detects a sample bottle 5, the speed reducing motor 6 is closed to turn on a servo motor 14, the servo motor 14 drives a screw rod 17 to rotate, a sample suction pipe 13 is controlled to descend and insert into the sample bottle 5 with the aligned position through the rotation of the screw rod 17, then a sample pump is opened for automatic sample injection, the servo motor 14 reversely rotates to drive the sample suction pipe 13 to return, the programmable PLC controls the speed reducing motor 6 to continue working, the sample bottle 5 after sampling enters the next station, and the sample bottle 5 to be sampled enters the sample station.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an autosampler for full-automatic thermal desorption appearance, includes organism (1), its characterized in that, the fixed fixing base (2) that is equipped with in bottom of organism (1) one side, the center department on fixing base (2) top rotates and is connected with pivot (7), slewing mechanism is installed to the bottom of pivot (7), the top fixed mounting of pivot (7) has carousel (4), a plurality of standing grooves (10) have been seted up to the avris equidistance on carousel (4) top, and is a plurality of the inside of standing groove (10) is inlayed and is equipped with size assorted sample bottle (5), the fixed kicking block (3) that is equipped with in top of organism (1) one side, mounting groove (12) have been seted up to the bottom of kicking block (3), the internally mounted of mounting groove (12) has telescopic machanism, telescopic machanism's one end fixed mounting has sample straw (13), the mid-mounting of organism (1) one side has photoelectric sensing switch (11), and slewing mechanism and telescopic machanism all pass through photoelectric sensing switch (11) and external power supply electric connection.

2. The autosampler for the full-automatic thermal desorption instrument according to claim 1, wherein the rotating mechanism comprises a speed reduction motor (6), a driving gear (8) and a driven gear (9), the driven gear (9) is fixedly mounted at the bottom of the rotating shaft (7), the speed reduction motor (6) is fixedly mounted inside the fixed seat (2), the driving gear (8) is fixedly mounted on an output shaft of the speed reduction motor (6), and the driving gear (8) is meshed with the driven gear (9).

3. The automatic sample injector for the full-automatic thermal desorption instrument according to claim 1, wherein the telescoping mechanism comprises a servo motor (14), a sliding block (16) and a screw rod (17), a sliding groove (15) is formed in one side groove wall of the mounting groove (12), the sliding block (16) is slidably connected inside the sliding groove (15), one side of the sliding block (16) is fixedly connected with the outer wall of the sampling suction pipe (13), the screw rod (17) is rotatably connected between the top and the bottom of the sliding groove (15), the screw rod (17) is in threaded connection with the middle of the sliding block (16), the servo motor (14) is fixedly mounted at the top end of the sliding groove (15), and an output shaft of the servo motor (14) is fixedly connected with the top end of the screw rod (17).

4. The autosampler for a fully automatic thermal desorption apparatus according to claim 1, characterized in that the bottom end of the sampling pipette (13) is aligned with the center of the most lateral placement groove (10).

5. The automatic sample injector for the full-automatic thermal desorption instrument according to claim 4, characterized in that round holes (19) are respectively formed in two sides of the inner wall of the placing groove (10), return springs (20) are respectively and fixedly mounted in the two round holes (19), an arc-shaped block (18) is respectively and fixedly mounted at one end of each of the two return springs (20), and the two arc-shaped blocks (18) are in contact connection with the outer wall of the sampling bottle (5).

6. The autosampler for full-automatic thermal desorption instrument according to claim 1, characterized in that the top end of the sampling suction pipe (13) is fixedly provided with a hose, and one end of the hose is fixedly connected with the feeding end of a pumping pump arranged in the machine body (1).