Multifunctional pipette

Abstract

The utility model relates to a multifunctional pipette which comprises a pipette main body, a liquid suction cavity and a moving cavity are arranged in the pipette main body, the outer surface of the pipette main body is connected with a limiting ring in a sliding mode, the limiting ring is connected with the pipette main body through a first lifting mechanism, and a detachable circular plate is arranged at the lower end of the pipette main body. An external thread ring in threaded connection with the interior of the liquid suction cavity is fixed to the upper end face of the detachable circular plate, a liquid suction pipe penetrating through the detachable circular plate and fixedly connected with the penetrating part is arranged in the middle of the detachable circular plate, a transparent window is arranged at the position, on the surface of the pipette body, of the front end of the liquid suction cavity, and a liquid level line is arranged on one side of the transparent window; a circular rod which penetrates through the pipette main body and is in sliding connection with the penetrating part is arranged in the moving cavity. According to the multifunctional pipette disclosed by the utility model, a worker can quantitatively adjust the liquid pumping amount of the whole device before liquid pumping, so that the worker can accurately complete quantitative liquid pumping treatment, and the multifunctional pipette is relatively practical.

Description

Technical Field

[0001] The utility model relates to the technical field of food detection, in particular to a multifunctional pipette. Background Technique

[0002] The intelligent detection of food and drugs refers to the rapid qualitative and quantitative detection of food and drug samples by using a Raman spectrometer with surface-enhanced Raman scattering technology (SERS) in an intelligent laboratory. During the detection process, a pipette is needed to quantitatively discharge liquid.

[0003] When the existing food detection pipette is used for liquid suction, it is usually through the staff observing the liquid level line on the pipette with the naked eye to perform quantitative liquid suction processing, which is likely to cause more or less liquid suction than the required liquid level amount, and it is not convenient to accurately control the suction amount. For this reason, we propose a multifunctional pipette. Content of the Utility Model

[0004] The utility model provides a multifunctional pipette, which solves the technical problems put forward in the background technique of the existing technology.

[0005] The solution of the utility model to the above technical problems is as follows: It includes a pipette body. An aspiration chamber and a moving chamber are opened inside the pipette body. A limiting ring is slidably connected to the outer surface of the pipette body, and the limiting ring is connected to the pipette body through a first lifting mechanism. A detachable circular plate is arranged at the lower end of the pipette body. An external thread ring fixedly connected to the inside of the aspiration chamber by thread is fixed on the upper end surface of the detachable circular plate. A suction pipe passing through the detachable circular plate and fixedly connected to the passing part is arranged in the middle of the detachable circular plate. A transparent window is arranged on the surface of the pipette body at the front end of the aspiration chamber, and a liquid level line is arranged on one side of the transparent window. A circular rod passing through the pipette body and slidably connected to the passing part is arranged inside the moving chamber. A moving piston slidably connected to the inner wall of the aspiration chamber is fixedly connected to the lower end of the circular rod. The circular rod is connected to the pipette body through a second lifting mechanism. A sliding through groove is opened on the surface of the pipette body on one side of the moving chamber. A moving slide plate is slidably connected to the inner wall of the sliding through groove. One end of the moving slide plate is fixedly connected to the surface of the circular rod. A connecting rod passing through the limiting ring and slidably connected to the passing part is fixedly connected to the lower end surface of the moving slide plate. A circular limiting block is fixedly connected to the lower end of the connecting rod.

[0006] On the basis of the above technical solution, the utility model can be further improved as follows.

[0007] Further, a control button is arranged on the front end surface of the pipette body. The second lifting mechanism includes a thread groove opened inside the circular rod. A rubber gasket is fixedly connected to the upper end surface of the detachable circular plate.

[0008] Further, a second threaded rod is threadedly connected inside the threaded groove. The second threaded rod passes through the pipette body and is rotatably connected to the penetrated part through a bearing. A bidirectional motor fixedly connected to the upper end of the pipette body is arranged at the upper end of the second threaded rod, and the output end of the bidirectional motor is fixedly connected to the upper end of the second threaded rod.

[0009] Further, the first lifting mechanism includes two fixing plates fixedly connected to the surface of the pipette body. A threaded block fixedly connected to the limiting ring is arranged between the two fixing plates.

[0010] Further, a first threaded rod passing through the threaded block and threadedly connected to the penetrated part is arranged at the middle of the threaded block. The first threaded rod passes through the two fixing plates and is rotatably connected to the penetrated part through a bearing.

[0011] Further, a rotating cap is fixedly connected to the upper end of the first threaded rod. A limiting rod fixedly connected to the two fixing plates is arranged on one side of the first threaded rod. The limiting rod passes through the limiting ring and is slidably connected to the penetrated part.

[0012] The beneficial effects of the present utility model are as follows: The present utility model provides a multifunctional pipette, which has the following advantages:

[0013] Through the cooperative action of the transparent window, liquid level line, limiting ring, first lifting mechanism, pipette body, liquid suction cavity, moving cavity, moving piston, circular rod, second lifting mechanism, sliding through groove, moving slide plate, connecting rod, circular limiting block, disassembly circular plate, liquid suction pipe and external thread ring, it is convenient for staff to accurately perform quantitative pipetting treatment, improving the practicability.

[0014] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly and implement it according to the content of the specification, the following takes the preferred embodiments of the present utility model and combines with the attached drawings to describe in detail as follows. The specific implementation manners of the present utility model are given in detail by the following embodiments and their attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The attached drawings described herein are used to provide a further understanding of the present utility model, form a part of this application, and the schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0016] Figure 1 is a schematic structural diagram of a multifunctional pipette provided by an embodiment of the present utility model;

[0017] Figure 2 is Figure 1 a schematic front sectional view of the structure in a multifunctional pipette provided;

[0018] Figure 3 For Figure 2 the enlarged schematic view of the partial structure at location A in a multifunctional pipette provided.

[0019] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0020] 1. Bidirectional motor; 2. Control button; 3. Pipette body; 4. Moving slide plate; 5. Connecting rod; 6. Rotating cap; 7. Fixed plate; 8. First threaded rod; 9. Threaded block; 10. Limiting rod; 11. Limiting ring; 12. Circular limiting block; 13. Suction tube; 14. Transparent window; 15. Liquid level line; 16. Demountable round plate; 17. Rubber gasket; 18. Suction cavity; 19. Moving cavity; 20. Sliding through slot; 21. Second threaded rod; 22. Circular rod; 23. Threaded groove; 24. Moving piston; 25. External threaded ring. Specific embodiments

[0021] The following will describe the principles and features of the present utility model in conjunction with the attached Figures 1 - 3 drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model. In the following paragraphs, the present utility model will be described more specifically by way of example with reference to the attached drawings. According to the following description and the claims, the advantages and features of the present utility model will be clearer. It should be noted that the attached drawings are all in a very simplified form and use non-precise scales, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present utility model.

[0022] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] Such as Figures 1 - 3As shown in the figure, the utility model provides a multifunctional pipette, which includes a pipette body 3. An aspiration chamber 18 and a moving chamber 19 are opened inside the pipette body 3. A limiting ring 11 is slidably connected to the outer surface of the pipette body 3. The limiting ring 11 is connected to the pipette body 3 through a first lifting mechanism. A detachable circular plate 16 is arranged at the lower end of the pipette body 3. An external thread ring 25 which is threadedly connected to the inside of the aspiration chamber 18 is fixed on the upper end surface of the detachable circular plate 16. A suction tube 13 which penetrates the detachable circular plate 16 and is fixedly connected to the penetrated part is arranged at the middle of the detachable circular plate 16. A transparent window 14 is arranged on the surface of the pipette body 3 at the front end of the aspiration chamber 18. A liquid level line 15 is arranged on one side of the transparent window 14. A circular rod 22 which penetrates the pipette body 3 and is slidably connected to the penetrated part is arranged inside the moving chamber 19. A moving piston 24 which is slidably connected to the inner wall of the aspiration chamber 18 is fixedly connected to the lower end of the circular rod 22. The circular rod 22 is connected to the pipette body 3 through a second lifting mechanism. A sliding through groove 20 is opened on the surface of the pipette body 3 on one side of the moving chamber 19. A moving slide plate 4 is slidably connected to the inner wall of the sliding through groove 20. One end of the moving slide plate 4 is fixedly connected to the surface of the circular rod 22. A connecting rod 5 which penetrates the limiting ring 11 and is slidably connected to the penetrated part is fixedly connected to the lower end surface of the moving slide plate 4. A circular limiting block 12 is fixedly connected to the lower end of the connecting rod 5.

[0025] Preferably, a control button 2 is arranged on the front end surface of the pipette body 3. The second lifting mechanism includes a threaded groove 23 opened inside the circular rod 22. A rubber sealing pad 17 is fixedly connected to the upper end surface of the detachable circular plate 16. The arrangement of the rubber sealing pad 17 can improve the sealing performance when the detachable circular plate 16 is connected to the pipette body 3.

[0026] Preferably, a second threaded rod 21 is threadedly connected inside the threaded groove 23. The second threaded rod 21 penetrates the pipette body 3 and is rotatably connected to the penetrated part through a bearing. A two-way motor 1 which is fixedly connected to the upper end of the pipette body 3 is arranged at the upper end of the second threaded rod 21. The output end of the two-way motor 1 is fixedly connected to the upper end of the second threaded rod 21. The arrangement of the two-way motor 1 can make the second threaded rod 21 rotate forward and backward.

[0027] Preferably, the first lifting mechanism includes two fixing plates 7 both fixedly connected to the surface of the pipette body 3. A threaded block 9 which is fixedly connected to the limiting ring 11 is arranged between the two fixing plates 7. The arrangement of the threaded block 9 can drive the limiting ring 11 to move up and down.

[0028] Preferably, a first threaded rod 8 which penetrates the threaded block 9 and is threadedly connected to the penetrated part is arranged at the middle of the threaded block 9. The first threaded rod 8 penetrates the two fixing plates 7 and is rotatably connected to the penetrated part through a bearing.

[0029] Preferably, a rotating cap 6 is fixedly connected to the upper end of the first threaded rod 8. A limiting rod 10 fixedly connected to the two fixing plates 7 is arranged on one side of the first threaded rod 8. The limiting rod 10 penetrates through the limiting ring 11 and is slidably connected to the penetrated part. The arrangement of the limiting rod 10 can make the limiting ring 11 slide stably.

[0030] The specific working principle and usage method of the present utility model are as follows:

[0031] The present utility model provides a multifunctional pipette. When in use, the staff first controls the bidirectional motor 1 to rotate the second threaded rod 21. Under the action of the thread groove 23, the circular rod 22 drives the moving piston 24 to move downward, so that the moving piston 24 moves to the inner bottom end of the liquid suction cavity 18. When the circular rod 22 moves downward, it will also drive the connecting rod 5 and the circular limiting block 12 to move downward through the sliding through groove 20 and the moving slide plate 4. Then the staff rotates the rotating cap 6 to rotate the first threaded rod 8. By rotating the first threaded rod 8, the threaded block 9 drives the limiting ring 11 to slide on the surface of the pipette body 3. When the limiting ring 11 slides to the position of the required liquid level line 15 and stops, then the staff can insert the liquid suction pipe 13 into the liquid to be pipetted. Then control the bidirectional motor 1 to drive the second threaded rod 21 to reverse, and the circular rod 22 can drive the moving piston 24 to rise. At this time, the moving slide plate 4 will also drive the connecting rod 5 and the circular limiting block 12 to rise until it stops controlling the bidirectional motor 1 when the circular limiting block 12 is blocked by the limiting ring 11. At this time, the position of the bottom surface of the moving piston 24 is flush with the position of the bottom surface of the limiting ring 11, so that accurate quantitative liquid extraction treatment can be carried out, without the staff observing quantitatively by the naked eye while extracting liquid, thus facilitating the staff to carry out quantitative pipetting operation.

[0032] The above is only the preferred embodiment of the present utility model, and it does not impose any form of limitation on the present utility model; any ordinary technician in the industry can smoothly implement the present utility model according to the description in the specification drawings and the above; however, any slight changes, modifications and evolutions made by those skilled in the art within the scope of the technical solution of the present utility model using the technical content disclosed above are equivalent embodiments of the present utility model; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A multifunctional pipette, comprising a pipette body (3), characterized in that, A liquid transfer pipette body (3) is internally provided with a liquid suction chamber (18) and a moving chamber (19). A limiting ring (11) is slidably connected to the outer surface of the liquid transfer pipette body (3). The limiting ring (11) is connected to the liquid transfer pipette body (3) through a first lifting mechanism. A detachable circular plate (16) is provided at the lower end of the liquid transfer pipette body (3). An external thread ring (25) that is threadedly connected to the inside of the liquid suction chamber (18) is fixed to the upper end surface of the detachable circular plate (16). A liquid suction tube (13) that penetrates the detachable circular plate (16) and is fixedly connected to the penetrated part is provided at the middle of the detachable circular plate (16). A transparent window (14) is provided on the surface of the liquid transfer pipette body (3) at the front end of the liquid suction chamber (18). A liquid level line (15) is provided on one side of the transparent window (14). A circular rod (22) that penetrates the liquid transfer pipette body (3) and is slidably connected to the penetrated part is provided inside the moving chamber (19). A moving piston (24) that is slidably connected to the inner wall of the liquid suction chamber (18) is fixedly connected to the lower end of the circular rod (22). The circular rod (22) is connected to the liquid transfer pipette body (3) through a second lifting mechanism. A sliding through groove (20) is provided on the surface of the liquid transfer pipette body (3) on one side of the moving chamber (19). A moving slide plate (4) is slidably connected to the inner wall of the sliding through groove (20). One end of the moving slide plate (4) is fixedly connected to the surface of the circular rod (22). A connecting rod (5) that penetrates the limiting ring (11) and is slidably connected to the penetrated part is fixedly connected to the lower end surface of the moving slide plate (4). A circular limiting block (12) is fixedly connected to the lower end of the connecting rod (5).

2. The multifunctional pipette according to claim 1, characterized in that, A control button (2) is provided on the front end surface of the liquid transfer pipette body (3). The second lifting mechanism includes a threaded groove (23) provided inside the circular rod (22). A rubber sealing pad (17) is fixedly connected to the upper end surface of the detachable circular plate (16).

3. The multifunctional pipette according to claim 2, characterized in that, A threaded rod two (21) is threadedly connected to the inside of the threaded groove (23). The threaded rod two (21) penetrates the liquid transfer pipette body (3) and is rotatably connected to the penetrated part through a bearing. A bidirectional motor (1) fixedly connected to the upper end of the liquid transfer pipette body (3) is provided at the upper end of the threaded rod two (21). The output end of the bidirectional motor (1) is fixedly connected to the upper end of the threaded rod two (21).

4. The multifunctional pipette according to claim 1, wherein The first lifting mechanism includes two fixing plates (7) both fixedly connected to the surface of the liquid transfer pipette body (3). A threaded block (9) fixedly connected to the limiting ring (11) is provided between the two fixing plates (7).

5. The multifunctional pipette according to claim 4, characterized in that, A threaded rod one (8) that penetrates the threaded block (9) and is threadedly connected to the penetrated part is provided at the middle of the threaded block (9). The threaded rod one (8) penetrates the two fixing plates (7) and is rotatably connected to the penetrated part through a bearing.

6. The multifunctional pipette according to claim 5, wherein A rotating cap (6) is fixedly connected to the upper end of the threaded rod one (8). A limiting rod (10) fixedly connected to the two fixing plates (7) is provided on one side of the threaded rod one (8). The limiting rod (10) penetrates the limiting ring (11) and is slidably connected to the penetrated part.

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