Filtering and pipetting equipment for pretreatment of organic analysis

Abstract

The utility model discloses filtering and pipetting equipment for pretreatment of organic analysis. The filtering and pipetting equipment comprises a machine table, a conveying mechanism, a small bottle feeding mechanism, a filter screen feeding mechanism, a small bottle transferring mechanism, a large bottle transferring mechanism, a large bottle feeding mechanism, a large bottle fixing mechanism and a pipetting mechanism. According to the utility model, small bottles and filter screens are respectively fed through the small bottle feeding mechanism and the filter screen feeding mechanism, meanwhile, the small bottles are moved to the conveying mechanism by adopting the small bottle transferring mechanism to be conveyed, and the filter screens are placed on the small bottles, so that in the process that sample liquid is injected into the small bottles by the liquid transferring mechanism, the sample liquid is fed into the small bottles by adopting the filter screen feeding mechanism; a sample solution is filtered through the filter screen, so that substances such as particles, impurities and residues in the sample solution and other impurities are filtered and separated, and the influence on the authenticity of a detection result in subsequent detection is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automated testing of organic chemical micro / trace substance analysis, in particular to a filtering and liquid transfer device used for pre-treatment of organic analysis. Background Art

[0002] In the detection process of organic chemical micro / trace substance analysis, it is generally necessary to divide and cut the sample or component, and divide the cut sample to be analyzed into sample bottles of different specifications and volumes, and inject the specified type and volume of organic solvent into the sample bottle according to the standard requirements to digest and extract the sample. After the digestion is completed, it is necessary to transfer an appropriate amount of digestion solution to a small bottle for subsequent detection. At present, in the prior art, the sample is treated with chemical reagents in a large bottle (dissolution container). If there are particles, residues and other substances in the sample liquid, these substances exist in the injection headspace bottle, which will affect the test results and block the infusion line. However, in the existing pipetting process, no corresponding filtering operation is set, which easily leads to deviations in the experimental data and affects the test results.

[0003] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a filtering and liquid transfer device for organic analysis pre-processing.

[0005] The technical solution of the utility model is as follows: a liquid transfer device for organic analysis pretreatment is provided, comprising: a machine platform, a conveying mechanism arranged on the machine platform, a small bottle feeding mechanism arranged beside one end of the conveying mechanism, a filter feeding mechanism, a small bottle transfer mechanism suspended above the end of the conveying mechanism, a large bottle transfer mechanism arranged beside the small bottle transfer mechanism, a large bottle feeding mechanism arranged beside the large bottle transfer mechanism, a large bottle fixing mechanism arranged beside the large bottle feeding mechanism, and a liquid transfer mechanism suspended above the large bottle fixing mechanism, the small bottle transfer mechanism moves above the conveying mechanism, the small bottle feeding mechanism and the filter feeding mechanism, the large bottle transfer mechanism moves above the large bottle feeding mechanism and the large bottle fixing mechanism, and the liquid transfer mechanism moves above the conveying mechanism and the large bottle fixing mechanism.

[0006] Furthermore, the conveying mechanism is provided with a plurality of vial clamping jigs, and the vial clamping jigs include: a jig seat provided on the conveying mechanism, a vial clamping cylinder provided at one end of the jig seat, a vial clamping block connected to the output end of the vial clamping cylinder, and a jig fixing block provided at the other end of the jig seat, and a plurality of vial clamping grooves matching the outer diameter of the vial are provided on the joint surface between the vial clamping block and the jig fixing block.

[0007] Furthermore, the vial transfer mechanism includes: a vial multi-axis moving module mounted on the machine platform, a vial transfer bracket arranged on the output end of the vial multi-axis moving module, a vial picking air claw and a filter picking air claw arranged on the vial transfer bracket, and the vial multi-axis moving module drives the vial transfer bracket to move in multi-axis directions.

[0008] Furthermore, the large bottle transfer mechanism comprises: a large bottle multi-axis moving module mounted on the machine platform, and a rotating clamping claw arranged on a moving end of the large bottle multi-axis moving module.

[0009] Furthermore, a code scanning mechanism is provided beside the large bottle transfer mechanism.

[0010] Furthermore, a gun tip feeding mechanism is arranged beside the pipetting mechanism, and the gun tip feeding mechanism includes: a gun tip moving module arranged on the machine platform, and a gun tip material rack arranged on the moving end of the gun tip moving module, a plurality of gun tips are placed on the gun tip material rack, and a recovery hopper is arranged beside the gun tip feeding mechanism, and a scraper is arranged above the recovery hopper.

[0011] Furthermore, the large bottle feeding mechanism includes: a large bottle moving module arranged on the machine platform, and a large bottle material rack arranged on the large bottle moving module.

[0012] Furthermore, a vial discharging mechanism is arranged on the side of the other end of the conveying mechanism relative to the vial feeding mechanism, and a vial discharging transfer mechanism is arranged above the conveying mechanism and the vial discharging mechanism, and the vial discharging transfer mechanism comprises: a discharging multi-axis moving module mounted on the machine platform, and a vial discharging clamp connected to the moving end of the discharging multi-axis moving module, and the vial discharging mechanism comprises: a vial material rack moving module arranged on the machine platform, and a vial material rack arranged on the moving end of the vial material rack moving module.

[0013] Furthermore, a bottle cap feeding mechanism is arranged beside the vial discharging and transferring mechanism, and the vial discharging clamping jaws are rotating clamping jaws.

[0014] By adopting the above scheme, the utility model feeds the vial and the filter respectively through the vial feeding mechanism and the filter feeding mechanism, and simultaneously uses the vial transfer mechanism to move the vial to the conveying mechanism for conveyance, and places the filter on the vial. Therefore, when the pipetting mechanism injects the sample liquid into the vial, the sample liquid is filtered through the filter, so that the particles, residual substances and other impurities in the sample liquid are filtered and separated, so as to avoid affecting the authenticity of the test results in subsequent tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a top view of the utility model. DETAILED DESCRIPTION

[0017] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] See also Figure 1 , Figure 2 The utility model provides a filtering and liquid transfer device for organic analysis pretreatment, comprising: a machine platform 1, a conveying mechanism 2 arranged on the machine platform 1, a small bottle feeding mechanism 31 arranged beside one end of the conveying mechanism 2, a filter feeding mechanism 32, a small bottle transfer mechanism 33 suspended above the end of the conveying mechanism 2, a large bottle transfer mechanism 41 arranged beside the small bottle transfer mechanism 33, a large bottle feeding mechanism 42 arranged beside the large bottle transfer mechanism 41, a large bottle fixing mechanism 43 arranged beside the large bottle feeding mechanism 42, and a liquid transfer mechanism 51 suspended above the large bottle fixing mechanism 43, the small bottle transfer mechanism 33 moves above the conveying mechanism 2, the small bottle feeding mechanism 31 and the filter feeding mechanism 32, the large bottle transfer mechanism 41 moves above the large bottle feeding mechanism 42 and the large bottle fixing mechanism 43, and the liquid transfer mechanism 51 moves above the conveying mechanism 2 and the large bottle fixing mechanism 43.

[0019] When it is necessary to transfer the sample liquid in the large bottle, first place the large bottle to be transferred on the large bottle feeding mechanism 42, and put a clean small bottle in the small bottle feeding mechanism 31, and put a clean filter in the filter feeding mechanism 32. In some embodiments, the small bottle feeding mechanism 31 and the filter feeding mechanism 32 respectively use a vibrating screen, which is vibrated by the vibrating screen, and guided and fed through a guide groove connected to the outlet end of the vibrating screen, so as to ensure that the small bottle or filter fed each time can meet the set direction for feeding, so that the small bottle transfer mechanism 33 can pick up the small bottle and the filter. After the small bottle feeding mechanism 31 and the filter feeding mechanism 32 feed the small bottle and the filter respectively, the small bottle transfer mechanism 33 first moves to the top of the small bottle feeding mechanism 31 to pick up the small bottle, and places the small bottle on the conveying mechanism 2, and then moves to the top of the filter feeding mechanism 32 to pick up the filter, and places the filter at the bottle mouth of the small bottle. The transport mechanism 2 moves the vial with the filter to the corresponding position of the pipetting mechanism 51. At the same time, the large bottle transfer mechanism 41 picks up the large bottle to be pipetted from the large bottle feeding mechanism 42, and places the large bottle on the large bottle fixing mechanism 43 for clamping and fixing. Then the pipetting mechanism 51 moves to the top of the large bottle fixing mechanism 43, and extends into the large bottle to draw the sample liquid, and then moves to the top of the small bottle to inject the drawn sample liquid into the small bottle. Since a filter is placed at the mouth of the small bottle, the sample liquid injected into the small bottle will be filtered through the filter, thereby separating the mixed particles and residual substances in the drawn sample liquid to avoid affecting the subsequent detection.

[0020] The conveying mechanism 2 is provided with a plurality of vial clamping jigs 21, which include: a jig seat provided on the conveying mechanism 2, a vial clamping cylinder 211 provided at one end of the jig seat, a vial clamping block 212 connected to the output end of the vial clamping cylinder 211, and a jig fixing block 213 provided at the other end of the jig seat, wherein the joint surface of the vial clamping block 212 and the jig fixing block 213 is provided with a plurality of vial clamping grooves matching the outer diameter of the vial. After the vial transfer mechanism 33 picks up the vial, the vial is moved to the vial clamping jig 21 on the conveying mechanism 2, and the vial clamping cylinder 211 drives the vial clamping block 212 to move, thereby clamping and fixing the vial in the vial clamping groove between the vial clamping block 212 and the jig fixing block 213, and clamping and fixing the vial.

[0021] In some embodiments, two sets of vial clamping slots are provided on the vial clamping block 212 and the fixture fixing block 213, so as to facilitate the injection of sample liquid taken from the same large bottle into two vials, so that when performing detection, it can be determined by comparison whether there is any abnormality in the sample liquid concentration.

[0022] The vial transfer mechanism 33 includes: a vial multi-axis moving module 331 mounted on the machine 1, a vial transfer bracket 332 arranged on the output end of the vial multi-axis moving module 331, a vial picking air gripper 333 and a filter picking air gripper 334 arranged on the vial transfer bracket 332, and the vial multi-axis moving module 331 drives the vial transfer bracket 332 to move in a multi-axis direction. By providing independent vial picking air grippers 333 and filter picking air grippers 334, the vial or the filter is picked up respectively, so that when the outer diameters of the vial and the filter at the clamping position are different, the picking effect is avoided to be affected by the deviation of the clamping claw size.

[0023] The large bottle transfer mechanism 41 comprises: a large bottle multi-axis moving module 411 mounted on the machine platform 1, and a rotating clamp 412 disposed on the moving end of the large bottle multi-axis moving module 411. Since the bottle mouth cover of the large bottle is provided with an upper cover, the rotating clamp 412 is adopted, and after the large bottle is grasped and moved to the large bottle fixing mechanism 43, the upper cover of the large bottle can be rotated by the rotating clamp 412 to remove the upper cover, so that the liquid transfer mechanism 51 can extend into the large bottle to take liquid.

[0024] A barcode scanning mechanism is provided beside the large bottle transfer mechanism 41. In order to facilitate the traceability of the sample liquid, the large bottle is pasted with corresponding barcode information. After the large bottle transfer mechanism 41 picks up the large bottle, the large bottle is first moved to the barcode scanning mechanism for barcode scanning and identification, so as to enter and bind the corresponding information on the system.

[0025] A gun tip feeding mechanism 52 is arranged beside the pipetting mechanism 51, and the gun tip feeding mechanism 52 includes: a gun tip moving module 521 arranged on the machine 1, and a gun tip material rack 522 arranged on the moving end of the gun tip moving module 521, a plurality of gun tips are placed on the gun tip material rack 522, and a recovery hopper is arranged beside the gun tip feeding mechanism 52, and a scraper is arranged above the recovery hopper. Before taking liquid, the pipetting mechanism 51 moves to the top of the gun tip material rack 522, and a group of clean gun tips are set on the liquid taking end of the pipetting mechanism 51. When taking liquid from a large bottle, the sample liquid taken is retained in the gun tip, which will not cause pollution to the pipetting mechanism, and after the sample liquid is injected into the small bottle, the gun tip is discarded, and a clean gun tip is replaced to absorb the subsequent sample liquid, so as to avoid the sample liquid in different large bottles from remaining and mixing into the sample liquid in other large bottles, thereby affecting the detection results.

[0026] The large bottle feeding mechanism 42 includes: a large bottle moving module 421 disposed on the machine 1, and a large bottle material rack 422 disposed on the large bottle moving module 421. The position of the large bottle material rack 422 is adjusted by the large bottle moving module 421, so that the large bottle transfer mechanism 41 can pick up the large bottle placed on the large bottle material rack 422, and after the large bottle is taken, the large bottle is placed back to the corresponding placement position when it is taken, so as to facilitate the recycling of the large bottle.

[0027] A vial discharge mechanism 62 is arranged beside the other end of the conveying mechanism 2 relative to the vial feeding mechanism 31, and a vial discharge transfer mechanism 61 is arranged above the conveying mechanism 2 and the vial discharge mechanism 62. The vial discharge transfer mechanism 61 comprises: a discharge multi-axis moving module 611 mounted on the machine 1, and a vial discharge clamp 612 connected to the moving end of the discharge multi-axis moving module 611. The vial discharge mechanism 62 comprises: a vial material rack moving module 621 arranged on the machine 1, and a vial material rack 622 arranged on the moving end of the vial material rack moving module 621. A printer is arranged beside the vial discharge transfer mechanism 61. A bottle cap feeding mechanism 63 is arranged beside the vial discharge transfer mechanism 61, and the vial discharge clamp 612 adopts a rotating clamp. After the transfer work is completed, the vial discharge transfer mechanism 61 moves to the top of the bottle cap feeding mechanism 63, picks up the bottle cap and moves to the top of the conveying mechanism 2, tightens the bottle cap of the vial that has completed the transfer work, and at the same time, the vial clamping fixture 21 releases the vial, and then the vial is lifted by the vial discharge transfer mechanism 61 and placed on the vial rack 622 for discharge. In some embodiments, the bottle cap feeding mechanism 63 uses a vibrating screen to feed the bottle cap.

[0028] In a specific embodiment, the overall workflow of the pipetting device is:

[0029] The large bottle transfer mechanism 41 moves to the top of the large bottle rack 422, grabs the large bottle and moves it to the code scanning mechanism, and reads the barcode or QR code on the large bottle through the code scanning mechanism, reads the sample information and saves it in the system. After completing the code scanning, the large bottle transfer mechanism 41 moves the large bottle to the large bottle fixing mechanism 43, clamps and fixes the bottom of the large bottle, and then the rotating clamp 412 of the large bottle transfer mechanism 41 unscrews the bottle cap on the large bottle, and keeps the action of clamping the bottle cap to make way.

[0030] The pipetting mechanism 51 moves to the top of the gun tip rack 522, and the gun tip is placed on the pipetting mechanism 51 and transported to the top of the large bottle after the cap is screwed. The gun tip is inserted into the large bottle to absorb the sample liquid in the large bottle, and the sample liquid is retained inside the gun tip. Then the pipetting mechanism 51 moves to the small bottle injection position, and at the same time, the large bottle transfer mechanism 41 tightens the bottle cap of the large bottle on the large bottle that has completed the liquid extraction, and places the large bottle at the corresponding placement position of the large bottle rack 422 when it is used, and then the large bottle transfer mechanism 41 picks up the next large bottle to be pipetted.

[0031] While the large bottles are being transferred, the filter screen feeding mechanism 32 is activated to sequentially transfer the arranged filter screens to a fixed position. Similarly, the small bottle feeding mechanism 31 transfers the arranged small bottles to a fixed position. The small bottle transfer mechanism 33 sequentially picks up the small bottles and the filter screens, and after the small bottle clamping fixture 21 clamps and fixes the small bottles, the filter screens are placed at the mouth of the small bottles. Then the transport mechanism 2 moves the small bottles to the bottom of the transfer mechanism 51.

[0032] The pipetting mechanism 51 moves downward along the Z-axis direction, so that the gun tip is inserted into the filter screen, and the valve connecting the pipetting mechanism 51 to the compressed air source is opened, and the sample liquid in the gun tip is injected into the vial through the filter screen by the pressure of the compressed air. After the pipetting is completed, the pipetting mechanism 51 lifts the used gun tip and filter screen, and transports them to the top of the recovery funnel on the side, and separates the gun tip and filter screen from the pipetting mechanism 51 through a scraper, so that the gun tip and filter screen fall into the recovery funnel for recycling.

[0033] The vial containing the sample liquid continues to move forward along with the conveying mechanism 2, and the vial discharge transfer mechanism 61 moves to above the bottle cap feeding mechanism 63, picks up the bottle cap and moves to above the conveying mechanism 2, tightens the bottle cap at the bottle mouth of the vial that has completed the pipetting work, and then the vial clamping fixture 41 releases the vial, and then the vial is lifted by the vial discharge transfer mechanism 61, and the vial is moved to the corresponding position of the inkjet printer. The inkjet printer prints the sample information saved by the system on the body of the vial, and finally the vial is placed on the vial rack 622 for discharge through the vial discharge transfer mechanism 61.

[0034] To summarize, the utility model feeds vials and filter screens respectively through a vial feeding mechanism and a filter screen feeding mechanism, and simultaneously uses a vial transfer mechanism to move the vial to a transport mechanism for transport, while placing the filter screen on the vial. Thus, in the process of the pipetting mechanism injecting the sample liquid into the vial, the sample liquid is filtered through the filter screen, thereby filtering and separating particles, residual substances and other impurities in the sample liquid, to avoid affecting the authenticity of the test results in subsequent tests.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A filtering and liquid transfer device for pre-processing of organic analysis, characterized in that: include: A machine platform, a conveying mechanism arranged on the machine platform, a small bottle feeding mechanism arranged beside one end of the conveying mechanism, a filter feeding mechanism, a small bottle transferring mechanism suspended above the end of the conveying mechanism, a large bottle transferring mechanism arranged beside the small bottle transferring mechanism, a large bottle feeding mechanism arranged beside the large bottle transferring mechanism, a large bottle fixing mechanism arranged beside the large bottle feeding mechanism, and a pipetting mechanism suspended above the large bottle fixing mechanism, wherein the small bottle transferring mechanism moves above the conveying mechanism, the small bottle feeding mechanism and the filter feeding mechanism, the large bottle transferring mechanism moves above the large bottle feeding mechanism and the large bottle fixing mechanism, and the pipetting mechanism moves above the conveying mechanism and the large bottle fixing mechanism.

2. The filtering and liquid transfer device for organic analysis pretreatment according to claim 1, characterized in that: The conveying mechanism is provided with a plurality of vial clamping jigs, which include: a jig seat provided on the conveying mechanism, a vial clamping cylinder provided at one end of the jig seat, a vial clamping block connected to the output end of the vial clamping cylinder, and a jig fixing block provided at the other end of the jig seat, wherein the joint surface between the vial clamping block and the jig fixing block is provided with a plurality of vial clamping grooves matching the outer diameter of the vial.

3. The filtering and liquid transfer device for organic analysis pretreatment according to claim 1, characterized in that: The vial transfer mechanism includes: a vial multi-axis moving module mounted on the machine platform, a vial transfer bracket arranged on the output end of the vial multi-axis moving module, a vial picking air claw and a filter picking air claw arranged on the vial transfer bracket, and the vial multi-axis moving module drives the vial transfer bracket to move in multi-axis directions.

4. The filtering and liquid transfer device for organic analysis pretreatment according to claim 1, characterized in that: The large bottle transfer mechanism comprises: a large bottle multi-axis moving module mounted on the machine platform, and a rotating clamping claw arranged on the moving end of the large bottle multi-axis moving module.

5. The filtering and liquid transfer device for organic analysis pretreatment according to claim 1, characterized in that: A code scanning mechanism is arranged beside the large bottle transfer mechanism.

6. The filtering and liquid transfer device for organic analysis pretreatment according to claim 1, characterized in that: A gun tip feeding mechanism is arranged beside the pipetting mechanism, and the gun tip feeding mechanism includes: a gun tip moving module arranged on the machine platform, and a gun tip material rack arranged on the moving end of the gun tip moving module, a plurality of gun tips are placed on the gun tip material rack, a recovery hopper is arranged beside the gun tip feeding mechanism, and a scraper is arranged above the recovery hopper.

7. The filtering and liquid transfer device for organic analysis pretreatment according to claim 1, characterized in that: The large bottle feeding mechanism comprises: a large bottle moving module arranged on the machine platform, and a large bottle material rack arranged on the large bottle moving module.

8. The filtering and liquid transfer device for organic analysis pretreatment according to claim 1, characterized in that: A vial discharging mechanism is arranged beside the other end of the conveying mechanism relative to the vial feeding mechanism, a vial discharging transfer mechanism is arranged above the conveying mechanism and the vial discharging mechanism, the vial discharging transfer mechanism comprises: a discharging multi-axis moving module mounted on the machine platform, and a vial discharging clamp connected to the moving end of the discharging multi-axis moving module, the vial discharging mechanism comprises: a vial material rack moving module arranged on the machine platform, and a vial material rack arranged on the moving end of the vial material rack moving module, and an inkjet printer is arranged beside the vial discharging transfer mechanism.

9. The filtering and liquid transfer device for organic analysis pretreatment according to claim 8, characterized in that: A bottle cap feeding mechanism is arranged beside the vial discharging and transferring mechanism, and the vial discharging clamping jaw adopts a rotating clamping jaw.

Images