Biochemicals pipettor

Abstract

The utility model provides a kind of biochemical preparation sample adding pipette, it is related to sample adding pipette technical field, including shell, shell one end is provided with top cover, top cover bottom is provided with piston, piston top is fixedly installed with moving rod, moving rod top is fixedly installed with push plate and is penetrated top cover, push plate top is fixedly installed with storage box, and first bevel gear is rotatably installed in storage box inside, and first bevel gear top is fixedly installed with support rod.The utility model in the middle, when using, staff pushes push plate to move, push plate moves and drives third gear to descend, because third gear is engaged with rack connection, so third gear rotates, and then second bevel gear is driven to rotate by placing rod, so first bevel gear rotates, rotating shaft drives stirring rod to rotate, so it can enter stirring to solution, only need to push push plate to move to drive stirring rod to rotate, reduce the difficulty of use.

Description

Technical Field

[0001] This utility model relates to the field of pipette technology, and in particular to a pipette for biochemical products. Background Technology

[0002] A pipette, also called a pipette gun, is a measuring tool used to transfer liquid from one container to another within a certain volume range. It is widely used in fields such as biology and chemistry.

[0003] In the prior art, such as the multi-channel rapid sampling pipette described in Chinese Patent CN 221907181 U, it includes a tube body, a push rod slidably connected inside the tube body, a push plate fixedly connected to the bottom of the push rod, connecting tubes equidistantly arranged at the bottom of the tube body, and a slider slidably connected inside the tube body and below the push plate at equal intervals. The slider has a second groove inside that cooperates with the connecting tube. The beneficial effect achieved by this utility model is that the connecting block can slide into the interior of the second groove, thereby driving the slider to squeeze the second spring. At the same time, the spring piece enters the interior of the slot, which facilitates the connection between the connecting tube and the tube body, enabling the pipette to simultaneously add samples through multiple channels, thereby improving the sampling efficiency of the pipette and enhancing the practicality of the device. However, this patent also has the following problems.

[0004] In the aforementioned patent, although the rotating rod rotates during the process of pushing the push plate to move, and the rotating rod drives the stirring blade to rotate, so as to stir the liquid in the tube and avoid precipitation, thereby improving the efficiency of sample liquid transfer and adding and improving the practicality of the device, it requires the operator to push the push plate to move and rotate the rotating rod at the same time, which is cumbersome and increases the difficulty of use. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing technologies require operators to simultaneously push the push plate and rotate the rotating rod during stirring, which is cumbersome and increases the difficulty of use. Therefore, this invention proposes a biochemical product pipette.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a biochemical product pipette, comprising a shell, a top cover at one end of the shell, a piston at the bottom of the top cover, a moving rod fixedly mounted on the top of the piston, a push plate fixedly mounted on the top of the moving rod penetrating the top cover, a storage box fixedly mounted on the top of the push plate, a first bevel gear rotatably mounted inside the storage box, a support rod fixedly mounted on the top of the first bevel gear, a rotating rod fixedly mounted on the top of the support rod penetrating the storage box, a rotating shaft fixedly mounted on the bottom of the first bevel gear, the bottom of the rotating shaft penetrating the push plate, the moving rod, and the piston, two stirring rods fixedly mounted on the outer wall of the rotating shaft, a second bevel gear rotatably mounted on the inner wall of the storage box, the first bevel gear meshing with the second bevel gear, a placement rod fixedly mounted on the outer wall of the second bevel gear, a third gear fixedly mounted on one end of the placement rod penetrating the storage box, and a rack fixedly mounted on the top of the top cover, the rack meshing with the third gear.

[0007] Preferably, the inner wall of the housing has two openings, a placement seat is slidably installed inside the openings, a needle tube is fixedly installed on the inner wall of the placement seat, and a connecting groove is provided on the outer wall of the placement seat.

[0008] Preferably, a limiting groove is formed on the inner wall of the opening, a second spring is fixedly installed on the inner wall of the limiting groove, a connecting block is fixedly installed on one end of the second spring, a connecting rod is fixedly installed on the outer wall of the connecting block, and a pull plate is fixedly installed on one end of the connecting rod through the housing.

[0009] Preferably, a protective plate is fixedly installed on the outer wall of the needle tube, and a retaining ring is fixedly installed on the outer wall of the protective plate.

[0010] Preferably, two sealing grooves are formed at the bottom of the housing, and sealing rings are fixedly installed on the inner wall of the sealing grooves.

[0011] Preferably, two fixing plates are fixedly installed on the outer wall of the housing. The top of the fixing plate has a slot, the inner wall of the slot has a storage groove, the inner wall of the storage groove has a threaded hole, the threaded hole has a threaded rod connected to it, one end of the threaded rod has a handle fixedly installed, and the end of the threaded rod away from the handle has a locking block fixedly installed.

[0012] Preferably, a first spring is fixedly connected between the piston and the top cover.

[0013] Preferably, two insert plates are fixedly installed at the bottom of the top cover, and the outer wall of the insert plates is provided with a slot.

[0014] Preferably, a limiting ring is fixedly installed on the outer wall of the rotating shaft, and the top of the limiting ring is in contact with the bottom of the piston.

[0015] Preferably, the outer wall of the placement seat is in contact with the inner wall of the opening, and the outer wall of the connecting block is in contact with the inner wall of the connecting groove.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. In this utility model, when in use, the operator pushes the push plate to move. When the push plate moves, it drives the third gear to descend. Since the third gear is meshed with the rack, the third gear rotates. This, in turn, drives the second bevel gear to rotate through the placement rod. As a result, the first bevel gear rotates, which in turn drives the stirring rod to rotate through the rotating shaft. In this way, the solution can be stirred. Only the push plate needs to be pushed to drive the stirring rod to rotate, which reduces the difficulty of use.

[0018] 2. In this utility model, when it is necessary to replace the needle with a needle of another size, the operator pulls the pull plate. The pull plate drives the connecting block away from the connecting groove through the connecting rod. At this time, the operator can pull out the placement seat and insert the new needle into the opening. The inclined surface of the connecting block contacts the placement seat. The connecting block is squeezed into the limiting groove and the second spring is compressed. When the connecting groove moves to the side of the connecting block, the elastic force of the second spring pushes the connecting block into the connecting groove. At this time, the outer wall of the protective plate is in contact with the shell. In this way, the replacement can be completed, which improves the replacement efficiency. Attached Figure Description

[0019] Figure 1 This utility model provides an overall three-dimensional view of a biochemical product pipette;

[0020] Figure 2 This invention provides a three-dimensional view of the internal structure of a biochemical product pipette shell;

[0021] Figure 3 A cross-sectional view of a storage box for a biochemical product pipette is provided for this utility model;

[0022] Figure 4 A cross-sectional view of the fixing plate of a biochemical product pipette is provided for this utility model;

[0023] Figure 5 for Figure 2 Enlarged view of point A.

[0024] Legend: 1. Shell; 2. Top cover; 3. Rack; 4. Moving rod; 5. Push plate; 6. Storage box; 7. Fixing plate; 8. Needle; 9. Rotating shaft; 10. First spring; 11. Piston; 12. Limiting ring; 13. Stirring rod; 14. First bevel gear; 15. Support rod; 16. Rotating rod; 17. Second bevel gear; 18. Placement rod; 19. Third gear; 20. Slot; 21. Insert plate; 22. Slot; 23. Storage slot; 24. Threaded hole; 25. Threaded rod; 26. Handle; 27. Locking block; 28. Opening; 29. ​​Placement seat; 30. Connecting groove; 31. Limiting groove; 32. Second spring; 33. Connecting block; 34. Connecting rod; 35. Pull plate; 36. Protective plate; 37. Sealing groove; 38. Insert ring; 39. Sealing ring. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Example 1, such as Figures 1-5 As shown, this utility model provides a biochemical product pipette, including a housing 1, a top cover 2 at one end of the housing 1, a piston 11 at the bottom of the top cover 2, a moving rod 4 fixedly mounted on the top of the piston 11, a push plate 5 fixedly mounted on the top of the moving rod 4 through the top cover 2, a storage box 6 fixedly mounted on the top of the push plate 5, a first bevel gear 14 rotatably mounted inside the storage box 6, a support rod 15 fixedly mounted on the top of the first bevel gear 14, and a rotating rod 16 fixedly mounted on the top of the support rod 15 through the storage box 6. The bottom of the first bevel gear 14 is fixedly mounted with a rotating shaft 9. The bottom of the rotating shaft 9 passes through the push plate 5, the moving rod 4 and the piston 11. Two stirring rods 13 are fixedly mounted on the outer wall of the rotating shaft 9. The inner wall of the storage box 6 is rotatably mounted with a second bevel gear 17. The first bevel gear 14 and the second bevel gear 17 are meshed and connected. The outer wall of the second bevel gear 17 is fixedly mounted with a placement rod 18. One end of the placement rod 18 passes through the storage box 6 and is fixedly mounted with a third gear 19. The top of the top cover 2 is fixedly mounted with a rack 3, which is meshed and connected with the third gear 19.

[0028] The effect achieved by the entire embodiment 1 is that, when in use, the staff pushes the push plate 5 to move, and when the push plate 5 moves, it drives the third gear 19 to descend. Since the third gear 19 is meshed with the rack 3, the third gear 19 rotates, which in turn drives the second bevel gear 17 to rotate through the placement rod 18. Therefore, the first bevel gear 14 rotates, which drives the stirring rod 13 to rotate through the rotating shaft 9. In this way, the solution can be stirred. Only pushing the push plate 5 to move is needed to drive the stirring rod 13 to rotate, which reduces the difficulty of use.

[0029] Example 2, as Figures 1-5 As shown, further, the inner wall of the housing 1 has two openings 28, and a placement seat 29 is slidably installed inside the openings 28. A needle tube 8 is fixedly installed on the inner wall of the placement seat 29, and a connecting groove 30 is provided on the outer wall of the placement seat 29.

[0030] Furthermore, a limiting groove 31 is provided on the inner wall of the opening 28, and a second spring 32 is fixedly installed on the inner wall of the limiting groove 31. A connecting block 33 is fixedly installed on one end of the second spring 32, and a connecting rod 34 is fixedly installed on the outer wall of the connecting block 33. One end of the connecting rod 34 passes through the housing 1 and is fixedly installed with a pull plate 35.

[0031] Furthermore, a protective plate 36 is fixedly installed on the outer wall of the needle tube 8, and a retaining ring 38 is fixedly installed on the outer wall of the protective plate 36.

[0032] Furthermore, two sealing grooves 37 are provided at the bottom of the housing 1, and sealing rings 39 are fixedly installed on the inner wall of the sealing grooves 37.

[0033] Furthermore, two fixing plates 7 are fixedly installed on the outer wall of the housing 1. The top of the fixing plate 7 is provided with a slot 20. The inner wall of the slot 20 is provided with a storage groove 23. The inner wall of the storage groove 23 is provided with a threaded hole 24. A threaded rod 25 is threadedly connected inside the threaded hole 24. A handle 26 is fixedly installed at one end of the threaded rod 25. A locking block 27 is fixedly installed at the end of the threaded rod 25 away from the handle 26.

[0034] Furthermore, a first spring 10 is fixedly connected between the piston 11 and the top cover 2. When the operator pushes the push plate 5, the first spring 10 is stretched. When the operator releases the push plate 5, the elastic force of the first spring 10 drives the piston 11 to reset, and the solution can enter the housing 1 from the needle tube 8.

[0035] Furthermore, two insert plates 21 are fixedly installed at the bottom of the top cover 2, and slots 22 are provided through the outer wall of the insert plates 21.

[0036] Furthermore, a limiting ring 12 is fixedly installed on the outer wall of the rotating shaft 9. The top of the limiting ring 12 is in contact with the bottom of the piston 11, and the bottom of the first bevel gear 14 is in contact with the top of the push plate 5. This can prevent the rotating shaft 9 from shaking up and down.

[0037] Furthermore, the outer wall of the placement seat 29 fits against the inner wall of the opening 28, and the outer wall of the connecting block 33 fits against the inner wall of the connecting groove 30. When the connecting block 33 enters the connecting groove 30, the placement seat 29 can be fixed.

[0038] The effect achieved by the entire embodiment 2 is that when it is necessary to replace the needle tube 8 of other sizes, the operator pulls the pull plate 35. The pull plate 35 drives the connecting block 33 away from the connecting groove 30 through the connecting rod 34. At this time, the operator can pull out the placement seat 29 and insert the new needle tube 8 into the opening 28. The inclined surface of the connecting block 33 contacts the placement seat 29. The connecting block 33 is squeezed into the limiting groove 31 and the second spring 32 is compressed. When the connecting groove 30 moves to the side of the connecting block 33, the elastic force of the second spring 32 pushes the connecting block 33 into the connecting groove 30. At this time, the outer wall of the protective plate 36 is in contact with the shell 1, thus completing the replacement and improving the replacement efficiency.

[0039] Working principle: When in use, the operator pushes the push plate 5 to move. When the push plate 5 moves, it drives the third gear 19 to descend. Since the third gear 19 is meshed with the rack 3, the third gear 19 rotates. This, in turn, drives the second bevel gear 17 to rotate through the placement rod 18. As a result, the first bevel gear 14 rotates, which drives the stirring rod 13 to rotate through the rotating shaft 9. In this way, the solution can be stirred. Only the push plate 5 needs to be moved to drive the stirring rod 13 to rotate, which reduces the difficulty of use. When a needle tube of a different size needs to be replaced, the operator pulls the pull plate 35. The pull plate 35, through the connecting rod 34, moves the connecting block 33 away from the connecting groove 30. At this time, the operator can pull out the placement seat 29 and insert the new needle tube 8 into the opening 28. The inclined surface of the connecting block 33 contacts the placement seat 29, and the connecting block 33 is squeezed into the limiting groove 31. The second spring 32 is compressed. When the connecting groove 30 moves to the side of the connecting block 33, the elastic force of the second spring 32 pushes the connecting block 33 into the connecting groove 30. At this time, the outer wall of the protective plate 36 is in contact with the shell 1, thus completing the replacement and improving the replacement efficiency. During installation, the inclined surface of the insertion ring 38 contacts the sealing ring 39, and the sealing ring 39 is compressed. When the insertion ring 38 is fully inserted into the sealing groove 37, the elastic force of the sealing ring 39 reduces the gap between the two and improves the sealing performance. During cleaning, the staff rotates the handle 26, which drives the threaded rod 25 to rotate, thereby causing the locking block 27 to leave the slot 22. This allows the insert plate 21 to be pulled out, separating the housing 1 from the top cover 2 for easy cleaning.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A biochemical product pipette, comprising a housing (1), characterized in that: The housing (1) has a top cover (2) at one end, a piston (11) at the bottom of the top cover (2), a moving rod (4) fixedly installed on the top of the piston (11), a push plate (5) fixedly installed on the top of the moving rod (4) through the top cover (2), a storage box (6) fixedly installed on the top of the push plate (5), a first bevel gear (14) rotatably installed inside the storage box (6), a support rod (15) fixedly installed on the top of the first bevel gear (14), a rotating rod (16) fixedly installed on the top of the support rod (15) through the storage box (6), and a rotating rod (16) fixedly installed on the bottom of the first bevel gear (14). Shaft (9), the bottom of the shaft (9) passes through the push plate (5), the moving rod (4) and the piston (11), two stirring rods (13) are fixedly installed on the outer wall of the shaft (9), a second bevel gear (17) is rotatably installed on the inner wall of the storage box (6), the first bevel gear (14) meshes with the second bevel gear (17), a placement rod (18) is fixedly installed on the outer wall of the second bevel gear (17), one end of the placement rod (18) passes through the storage box (6) and a third gear (19) is fixedly installed, a rack (3) is fixedly installed on the top of the top cover (2), and the rack (3) meshes with the third gear (19).

2. The biochemical product pipette according to claim 1, characterized in that: The inner wall of the housing (1) has two openings (28) through it. A placement seat (29) is slidably installed inside the opening (28). A needle tube (8) is fixedly installed on the inner wall of the placement seat (29). A connecting groove (30) is provided on the outer wall of the placement seat (29).

3. The biochemical product pipette according to claim 2, characterized in that: A limiting groove (31) is provided on the inner wall of the opening (28). A second spring (32) is fixedly installed on the inner wall of the limiting groove (31). A connecting block (33) is fixedly installed on one end of the second spring (32). A connecting rod (34) is fixedly installed on the outer wall of the connecting block (33). One end of the connecting rod (34) passes through the shell (1) and is fixedly installed with a pull plate (35).

4. The biochemical product pipette according to claim 2, characterized in that: A protective plate (36) is fixedly installed on the outer wall of the needle tube (8), and a plug ring (38) is fixedly installed on the outer wall of the protective plate (36).

5. A biochemical product pipette according to claim 1, characterized in that: The bottom of the housing (1) has two sealing grooves (37), and a sealing ring (39) is fixedly installed on the inner wall of the sealing groove (37).

6. The biochemical product pipette according to claim 1, characterized in that: Two fixing plates (7) are fixedly installed on the outer wall of the housing (1). The top of the fixing plate (7) is provided with a slot (20). The inner wall of the slot (20) is provided with a storage groove (23). The inner wall of the storage groove (23) is provided with a threaded hole (24). A threaded rod (25) is threadedly connected inside the threaded hole (24). A handle (26) is fixedly installed at one end of the threaded rod (25). A locking block (27) is fixedly installed at the end of the threaded rod (25) away from the handle (26).

7. The biochemical product pipette according to claim 1, characterized in that: A first spring (10) is fixedly connected between the piston (11) and the top cover (2).

8. A biochemical product pipette according to claim 1, characterized in that: The top cover (2) has two insert plates (21) fixedly installed at the bottom, and the outer wall of the insert plate (21) has a slot (22) through it.

9. A biochemical product pipette according to claim 1, characterized in that: A limiting ring (12) is fixedly installed on the outer wall of the rotating shaft (9), and the top of the limiting ring (12) is in contact with the bottom of the piston (11).

10. A biochemical product pipette according to claim 3, characterized in that: The outer wall of the placement seat (29) is in contact with the inner wall of the opening (28), and the outer wall of the connecting block (33) is in contact with the inner wall of the connecting groove (30).

Images