Sample transfer device of full-automatic headspace sampler

Abstract

The utility model discloses a full-automatic headspace sample injector sample transfer device which comprises a sample disc, the outer surface of the sample disc is rotatably sleeved with a fixed seat, the bottom of the sample disc is attached to the inner bottom of the fixed seat, two through holes penetrating to the top are symmetrically formed in the bottom of the fixed seat, and the two through holes are communicated with the fixed seat. The bottom of the fixed seat is fixedly connected with a third motor, and the driving end of the third motor penetrates through the fixed seat and is fixedly connected with the sample disc. According to the utility model, through the arrangement of the fixed seat, the through hole, the fixed frame, the electric transverse moving assembly, the mounting groove, the mounting frame, the electric screw rod, the sliding block, the sample frame, the bottom plate, the round hole and the upward pushing assembly, samples in the sample frame can be transferred into the sample disc, and samples extracted from the sample disc can also be transferred into the sample frame, so that the sample placing capacity is increased; when the samples to be detected are more, an operator does not need to wait beside all the time to place the samples, so that the operation is more convenient, and the waste of manpower is avoided.

Description

Technical Field

[0001] This utility model relates to the field of sample transfer technology, and in particular to a fully automatic headspace sample transfer device. Background Technology

[0002] A fully automated headspace sampler is a sample pretreatment device used in gas chromatography analysis, capable of automatically completing the headspace extraction and injection process. This equipment is widely used for the detection of volatile compounds in various fields, including residual solvents and organic pollutants in drinking water, food, pharmaceuticals, and packaging materials.

[0003] A fully automatic headspace sampling device with prior art disclosure number CN206096050U includes a chassis, a support and a housing. The device is characterized by further including a sample area, a sample heating area, a gas pressure control area, a sampling and injection area, a program control area and an overall device power supply area; the chassis is located at the bottom and the support is vertically fixed to the upper side of the chassis.

[0004] The device uses a disc-shaped sample tray with a ring of empty sample spaces. However, the disc-shaped sample tray has a limited sample capacity. If there are many samples to be tested, operators need to wait to place the samples, which is inconvenient and wastes manpower. Therefore, a fully automatic headspace sample transfer device is proposed. Utility Model Content

[0005] This invention is a fully automatic headspace sample transfer device proposed to overcome the shortcomings of existing technologies.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a fully automatic headspace sample transfer device, including a sample tray, a fixed base rotatably sleeved on the outer surface of the sample tray, and the bottom of the sample tray fitting against the inner bottom of the fixed base. The bottom of the fixed base has two through holes symmetrically opened to the top. A third motor is fixedly connected to the bottom of the fixed base, and the drive end of the third motor passes through the fixed base and is fixedly connected to the sample tray.

[0007] A fixed frame is fixedly connected to the bottom of the fixed base. An electric horizontal movement component is fixedly installed on one side of the outer surface of the fixed frame. A mounting frame is fixedly connected to the movable end of the electric horizontal movement component. A mounting groove is opened on one side inner wall of the mounting frame. An electric screw is installed between the mounting groove and the mounting frame.

[0008] The mounting bracket has sliders slidably connected to both inner walls, and an electric screw is connected to the adjacent slider. A sample holder is fixedly connected between the two sliders.

[0009] The bottom of the sample holder is fitted with a base plate, and the bottom of the base plate has a through hole extending to the top, and the through hole matches the through hole. The bottom of the base plate is fixedly installed with an upward push assembly, and the upward push assembly matches the through hole.

[0010] Furthermore, both the sample tray and the sample holder have multiple sample holes extending to the bottom at their tops, and the sample holes match the through holes.

[0011] Furthermore, the electric traverse assembly includes a mounting base, and the mounting base is fixedly connected to the fixed frame. A first motor is fixedly mounted on one side of the outer surface of the mounting base. A first screw is fixedly connected to the drive end of the first motor. The first screw passes through the mounting base and is rotatably connected to it. A slide is threaded onto the outer surface of the first screw, and the slide is fixedly connected to the mounting frame.

[0012] Furthermore, the slide block and the mounting base are slidably connected.

[0013] Furthermore, the electric screw includes a second motor, which is fixedly mounted on one side of the outer surface of the mounting frame. The drive end of the second motor is fixedly connected to the second screw, which extends through the outer wall of the mounting frame into the mounting groove, and the second screw is threadedly connected to the adjacent slider.

[0014] Furthermore, the second screw is rotatably connected to the mounting bracket.

[0015] Furthermore, the push assembly includes an electric push rod, which is fixedly installed at the bottom of the base plate. The movable end of the electric push rod is fixedly connected to a push plate, and the push plate matches the circular hole.

[0016] The beneficial effects of this utility model are:

[0017] In use, this fully automatic headspace sample transfer device, through a fixed base, through hole, fixed frame, electric transverse component, mounting groove, mounting bracket, electric screw, slider, sample rack, base plate, round hole, and push-up component, can transfer samples from the sample rack to the sample tray, and can also transfer samples that have been extracted from the sample tray to the sample rack, increasing the sample holding capacity. When there are many samples to be tested, operators do not need to wait by the side to place samples, making the operation more convenient and avoiding waste of manpower. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 : A perspective view of this utility model;

[0020] Figure 2 : A cross-sectional view of this utility model;

[0021] Figure 3 : Schematic diagram of the installation of the electric screw of this utility model.

[0022] The attached figures are labeled as follows:

[0023] 1. Sample tray; 2. Fixing base; 3. Base plate; 4. Sample holder; 5. First motor; 6. Slider; 7. Second motor; 8. Push plate; 9. Electric push rod; 10. Fixing frame; 11. Mounting base; 12. Round hole; 13. Slide block; 14. First screw; 15. Sample hole; 16. Through hole; 17. Mounting frame; 18. Second screw; 19. Mounting slot; 20. Third motor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 3 As shown, a fully automatic headspace sample transfer device is disclosed, including a sample tray 1. A fixed base 2 is rotatably sleeved on the outer surface of the sample tray 1, and the bottom of the sample tray 1 is in contact with the inner bottom of the fixed base 2. Two through holes 16 are symmetrically opened at the bottom of the fixed base 2, extending to the top. A third motor 20 is fixedly connected to the bottom of the fixed base 2. The driving end of the third motor 20 is disposed through the fixed base 2 and fixedly connected to the sample tray 1. The third motor 20 can drive the sample tray 1 to rotate.

[0026] A fixed frame 10 is fixedly connected to the bottom of the fixed base 2. An electric lateral movement assembly is fixedly installed on one side of the outer surface of the fixed frame 10. A mounting frame 17 is fixedly connected to the movable end of the electric lateral movement assembly. The electric lateral movement assembly includes a mounting base 11, and the mounting base 11 is fixedly connected to the fixed frame 10. A first motor 5 is fixedly installed on one side of the outer surface of the mounting base 11. A first screw 14 is fixedly connected to the drive end of the first motor 5. The first screw 14 passes through the mounting base 11 and is rotatably connected to it. The first screw 14 and the mounting base 11 are rotatably connected through a bearing. The inner ring of the bearing is fixedly connected to the first screw 14, and the outer ring of the bearing is fixedly connected to the mounting base 11. A slide 13 is threaded onto the outer surface of the first screw 14, and the slide 13 is fixedly connected to the mounting frame 17. The slide 13 and the mounting base 11 are slidably connected. The mounting base 11 has a limiting function for the slide 13, which can ensure the stability of the movement of the slide 13.

[0027] A mounting groove 19 is provided on one inner wall of the mounting bracket 17. An electric screw is installed between the mounting groove 19 and the mounting bracket 17. Slider 6 is slidably connected to both inner walls of the mounting bracket 17. The mounting bracket 17 has a limiting function for the slider 6, which can ensure the stability of the slider 6 movement. The electric screw is connected to the adjacent slider 6. The electric screw includes a second motor 7, which is fixedly installed on one side of the outer surface of the mounting bracket 17. The drive end of the second motor 7 is fixedly connected to a second screw 18, which extends through the outer wall of the mounting bracket 17 into the mounting groove 19. The second screw 18 is threadedly connected to the adjacent slider 6. The second screw 18 is rotatably connected to the mounting bracket 17. The second screw 18 is connected to the mounting bracket 17 through a bearing. The inner ring of the bearing is fixedly connected to the second screw 18, and the outer ring of the bearing is fixedly connected to the mounting bracket 17.

[0028] A sample holder 4 is fixedly connected between the two sliders 6. The top of both the sample tray 1 and the sample holder 4 are provided with multiple sample holes 15 that extend to the bottom. The sample holes 15 are matched with the through holes 16. The setting of the sample holes 15 is conducive to the placement of the sample.

[0029] The bottom of the sample holder 4 is fitted with a base plate 3. The bottom of the base plate 3 has a through hole 12 extending to the top, and the through hole 12 matches the through hole 16. The bottom of the base plate 3 is fixedly installed with an upward push assembly, which matches the through hole 12. The upward push assembly includes an electric push rod 9, which is fixedly installed at the bottom of the base plate 3. The movable end of the electric push rod 9 is fixedly connected to a push plate 8, which matches the through hole 12. A vertical plate is fixedly installed on one side of the outer surface of the electric push rod 9. The vertical plate is connected to the base plate 3 by bolts, which facilitates the disassembly and assembly of the electric push rod 9.

[0030] Working principle: First, the third motor 20 drives the sample tray 1 to rotate slowly, placing multiple sample vials into the corresponding sample holes 15. At this time, the push plate 8 is located in the through hole 16 above it and is flush with the bottom of the fixed base 2. The other through hole 16 is blocked by the bottle-top rod inside the fully automatic headspace sampler. Then, the remaining sample vials are placed sequentially into the sample holes 15 on the sample rack 4. During the detection process, when the sample vials that have been sampled move above the push plate 8, the electric push rod 9 drives the push plate 8 to descend, and the sample vials also descend and fall into the sample rack 4. When the top of the push plate 8 is flush with the top of the base plate 3 (controlled by the built-in controller of the fully automatic headspace sampler), the electric push rod 9 stops running, and then the second motor 7 runs, driving the second screw 18 to rotate. The second screw 18 pushes the slider 6 to move along the mounting bracket 17, thereby pushing the sample holder 4 to move and move the unsampled sample bottle to the top of the push plate 8. Then, the electric push rod 9 pushes it into the sample hole 15 in the sample tray 1. Next, the third motor 20 drives the sample tray 1 to rotate and switch the position of the sample bottle. When the next sample bottle that has been sampled moves to the top of the push plate 8, the operation is the same as above to complete the transfer operation. When the sample holes 15 in the same row of the sample holder 4 are filled with sample bottles that have been sampled, the first motor 5 runs and drives the first screw 14 to rotate. The first screw 14 drives the mounting bracket 17 to move laterally through the slide block 13. The mounting bracket 17 drives the sample holder 4 to move laterally through the slider 6, moving the next row of sample holes 15 to below the through hole 16.

[0031] It should be noted that, in actual use, the first motor 5, the second motor 7, the third motor 20, and the electric push rod 9 are all electrically connected to the built-in controller of the fully automatic headspace sampler to facilitate overall control. The specific data analysis and processing involved to further realize the control function are methods that can be implemented by those skilled in the art based on common knowledge. These methods are not within the scope of this solution. The above description is only to illustrate the beneficial effects that can be achieved by this hardware structure improvement in conjunction with common knowledge.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fully automated headspace sample transfer device, comprising a sample tray (1), characterized in that: The outer surface of the sample tray (1) is rotatably fitted with a fixing seat (2), and the bottom of the sample tray (1) is in contact with the inner bottom of the fixing seat (2). The bottom of the fixing seat (2) has two through holes (16) symmetrically opened to the top. The bottom of the fixing seat (2) is fixedly connected with a third motor (20). The driving end of the third motor (20) passes through the fixing seat (2) and is fixedly connected to the sample tray (1). The bottom of the fixed base (2) is fixedly connected to a fixed frame (10). An electric horizontal movement component is fixedly installed on one side of the outer surface of the fixed frame (10). The movable end of the electric horizontal movement component is fixedly connected to a mounting frame (17). An installation groove (19) is opened on one side of the inner wall of the mounting frame (17). An electric screw is installed between the installation groove (19) and the mounting frame (17). The mounting bracket (17) has sliders (6) slidably connected to both inner walls, and the electric screw is connected to the adjacent sliders (6). The sample holder (4) is fixedly connected between the two sliders (6). The bottom of the sample holder (4) is fitted with a base plate (3), and the bottom of the base plate (3) has a through hole (12) extending to the top, and the through hole (12) matches the through hole (16). The bottom of the base plate (3) is fixedly installed with an upward push assembly, and the upward push assembly matches the through hole (12).

2. The fully automated headspace sample transfer device according to claim 1, characterized in that: The sample tray (1) and the sample holder (4) are both provided with multiple sample holes (15) extending to the bottom, and the sample holes (15) are matched with the through holes (16).

3. The fully automated headspace sample transfer device according to claim 1, characterized in that: The electric traverse assembly includes a mounting base (11), and the mounting base (11) is fixedly connected to the fixing frame (10). A first motor (5) is fixedly mounted on one side of the outer surface of the mounting base (11). A first screw (14) is fixedly connected to the drive end of the first motor (5). The first screw (14) passes through the mounting base (11) and is rotatably connected to it. A slide (13) is threaded onto the outer surface of the first screw (14), and the slide (13) is fixedly connected to the mounting frame (17).

4. The fully automated headspace sample transfer device according to claim 3, characterized in that: The slide (13) is slidably connected to the mounting base (11).

5. The fully automated headspace sample transfer device according to claim 1, characterized in that: The electric screw includes a second motor (7), and the second motor (7) is fixedly installed on one side of the outer surface of the mounting bracket (17). The drive end of the second motor (7) is fixedly connected to a second screw (18), and the second screw (18) extends through the outer wall of the mounting bracket (17) into the mounting groove (19). The second screw (18) is threadedly connected to the adjacent slider (6).

6. The fully automated headspace sample transfer device according to claim 5, characterized in that: The second screw (18) is rotatably connected to the mounting bracket (17).

7. The fully automated headspace sample transfer device according to claim 1, characterized in that: The push assembly includes an electric push rod (9), which is fixedly installed at the bottom of the base plate (3). The movable end of the electric push rod (9) is fixedly connected to a push plate (8), and the push plate (8) matches the round hole (12).

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