Multi-channel adjustable pipettor

Abstract

The multi-channel adjustable pipettor comprises an upper shell, the bottom of the upper shell is fixedly communicated with a lower shell, a first pressing rod is installed in the upper shell in a sliding mode in the vertical direction, and the top end of the first pressing rod is fixedly connected with a push plate; the bottom end of the first pressing rod sequentially penetrates through the upper shell and the lower shell, extends into the lower shell and is fixedly connected with a pressing plate, and an adjusting mechanism is arranged in the lower shell. Through mutual cooperation of the upper shell, the lower shell, the first pressing rod, the push plate, the pressing plate, a guide groove, a guide block, a suction pipe, a liquid suction head, a piston, a connecting rod, an adjusting mechanism, a top plate, a bearing, a stud, a handle, a connecting plate, a vertical rod, a check block and a sleeve spring, the effect that the length of the suction pipe can be adjusted according to needs is achieved, and the liquid suction device can be suitable for sucking liquid in different scenes; and the pollution to the pipette is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipettes, in particular to a multi-channel adjustable pipette. Background Art

[0002] A pipette, also called a pipette gun, is a measuring tool that transfers liquid from one container to another within a certain range. It is widely used in biology, chemistry and other fields. A pipette is a precision instrument that is often used to transfer small or trace amounts of liquid in laboratories.

[0003] At present, as shown in the patent application number CN202022872090.7, the utility model discloses a single-channel anti-contamination pipette, which includes a main body, a suction tube and a pipette head. The suction tube consists of an upper tube section and a lower tube section. The upper end of the upper tube section is connected to the inner cavity of the main body, the upper tube section and the lower tube section are threaded, and the lower end of the lower tube section is detachably connected to the upper end of the pipette head. A backflow prevention channel is provided in the lower tube section, and a protective cap is provided in the pipette head. The protective cap is cylindrical and the upper end closes the lower end opening. The lower end opening of the protective cap is fixedly connected to the inner wall of the pipette head through an outer flange, and a plurality of air holes are provided on the cylindrical wall near the upper end of the protective cap.

[0004] However, in actual use, the above patent has the following defects: the length of the suction tube cannot be adjusted according to needs, it cannot be used to absorb liquid in different scenarios, and it is easy to cause contamination to the pipette. For this reason, we propose a multi-channel adjustable pipette. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-channel adjustable pipette to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a multi-channel adjustable pipette, comprising:

[0007] Upper shell;

[0008] A lower shell, the bottom of the upper shell is fixedly connected to the lower shell;

[0009] A first pressure rod, wherein the first pressure rod is slidably mounted in the upper housing along a vertical direction;

[0010] A push plate, the top end of the first pressure rod is fixedly connected with the push plate;

[0011] A pressure plate, wherein the bottom end of the first pressure rod sequentially penetrates the upper shell and the lower shell and extends to the interior of the lower shell and is fixedly connected with the pressure plate;

[0012] An adjusting mechanism is arranged inside the lower shell.

[0013] Furthermore, guide grooves are provided on both left and right sides of the inner wall of the lower shell, and guide blocks are slidably connected to the upper part of the inner part of the guide grooves.

[0014] Furthermore, the side of the guide block away from the guide groove penetrates the guide groove and extends to the outside of the guide groove and is fixedly connected with a suction tube, and the bottom of the suction tube penetrates the lower shell and extends to the outside of the lower shell and is threadedly connected with a liquid suction head.

[0015] Furthermore, the piston is movably connected to the inside of the suction tube, the top of the piston is fixedly connected to a connecting rod, the top of the connecting rod passes through the suction tube and extends to the outside of the suction tube and is fixedly connected to the pressure plate.

[0016] Furthermore, the adjustment mechanism includes a top plate, a bearing, a stud, a handle and a connecting plate, the top plate is fixedly connected to the rear side of the inner wall of the lower shell, the bottom of the top plate is fixedly installed with a bearing, the bottom of the bearing is rotatably connected to a stud, the bottom end of the stud passes through the lower shell and extends to the outside of the lower shell and is fixedly connected to a handle.

[0017] Furthermore, a connecting plate is threadedly connected to the surface of the stud, and a side of the connecting plate close to the suction pipe is fixedly connected to the suction pipe.

[0018] Furthermore, the top of the pressure plate is fixedly connected to two symmetrically arranged vertical rods, the tops of the vertical rods penetrate the lower shell and extend to the outside of the lower shell and are fixedly connected to a stopper, the vertical rods are movably connected to the lower shell, and a sleeve spring is sleeved on the surface of the vertical rod and located outside the lower shell.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0020] The utility model achieves the effect of adjusting the length of the suction tube according to needs through the cooperation of the upper shell, the lower shell, the first pressure rod, the push plate, the pressure plate, the guide groove, the guide block, the suction tube, the liquid suction head, the piston, the connecting rod, the adjustment mechanism, the top plate, the bearing, the stud, the handle, the connecting plate, the vertical rod, the stopper and the sleeve spring. The utility model can be suitable for sucking liquid in different scenarios and reduces the pollution to the pipette gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view structural schematic diagram of the utility model;

[0022] Figure 2 It is a front view structural cross-sectional view of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the pressing plate of the utility model;

[0024] Figure 4It is a structural schematic diagram of the regulating mechanism of the utility model.

[0025] In the figure: 1. upper shell; 2. lower shell; 3. first pressure rod; 4. push plate; 5. pressure plate; 6. guide groove; 7. guide block; 8. suction tube; 9. liquid suction head; 10. piston; 11. connecting rod; 12. adjustment mechanism; 121. top plate; 122. bearing; 123. stud; 124. handle; 125. connecting plate; 13. vertical rod; 14. stopper; 15. sleeve spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figure 1-4A multi-channel adjustable pipette includes an upper shell 1, the bottom of which is fixedly connected to a lower shell 2, a first pressure rod 3 is slidably installed in the upper shell 1 along the vertical direction, the top of the first pressure rod 3 is fixedly connected to a push plate 4, the bottom end of the first pressure rod 3 passes through the upper shell 1 and the lower shell 2 in sequence and extends to the interior of the lower shell 2 and is fixedly connected to a pressure plate 5, and an adjustment mechanism 12 is arranged inside the lower shell 2.

[0030] Specifically, guide grooves 6 are provided on both left and right sides of the inner wall of the lower shell 2 , and guide blocks 7 are slidably connected to the upper part of the inner part of the guide grooves 6 .

[0031] During the specific implementation, the side of the guide block 7 away from the guide groove 6 passes through the guide groove 6 and extends to the outside of the guide groove 6 and is fixedly connected with a suction tube 8. The bottom of the suction tube 8 passes through the lower shell 2 and extends to the outside of the lower shell 2 and is threadedly connected with a liquid suction head 9.

[0032] Specifically, the piston 10 is movably connected to the interior of the suction tube 8 , and the top of the piston 10 is fixedly connected to a connecting rod 11 . The top of the connecting rod 11 penetrates the suction tube 8 and extends to the outside of the suction tube 8 and is fixedly connected to the pressure plate 5 .

[0033] During specific implementation, the adjustment mechanism 12 includes a top plate 121, a bearing 122, a stud 123, a handle 124 and a connecting plate 125. The top plate 121 is fixedly connected to the rear side of the inner wall of the lower shell 2, the bottom of the top plate 121 is fixedly installed with a bearing 122, the bottom of the bearing 122 is rotatably connected to the stud 123, the bottom end of the stud 123 passes through the lower shell 2 and extends to the outside of the lower shell 2 and is fixedly connected to the handle 124.

[0034] Specifically, a connecting plate 125 is threadedly connected to the surface of the stud 123 , and a side of the connecting plate 125 close to the suction pipe 8 is fixedly connected to the suction pipe 8 .

[0035] During the specific implementation, the top of the pressure plate 5 is fixedly connected to two symmetrically arranged vertical rods 13, the top of the vertical rod 13 passes through the lower shell 2 and extends to the outside of the lower shell 2 and is fixedly connected to a stopper 14, the vertical rod 13 is movably connected to the lower shell 2, and a sleeve spring 15 is sleeved on the surface of the vertical rod 13 and located on the outside of the lower shell 2.

[0036] In actual application: when it is necessary to adjust the length of the suction tube 8, just turn the handle 124 counterclockwise or clockwise to drive the stud 123 to rotate, and then under the action of the thread, the connecting plate 125 moves downward or upward on the stud 123, thereby driving the suction tube 8, the guide block 7 and the liquid pipetting head 9 to move downward or upward, and then the suction tube 8 moves to a suitable position in the vertical direction. Through the above steps, the relative position of the suction tube 8 and the lower shell 2 can be changed to adjust the length of the suction tube 8, which can be suitable for sucking liquid in different scenarios and effectively avoid contamination of the pipette.

[0037] All components in the present invention are universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods. At the same time, standard parts used in the present application documents can be purchased from the market, and each component in the present application document can be customized according to the description in the specification and drawings. The specific connection method of each component adopts conventional means such as mature bolts, rivets, welding, etc. in the prior art, and machinery, parts and equipment adopt conventional models in the prior art.

[0038] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the working principle, and the electrical connection between the electrical components should be completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The utility model mainly introduces the working principle and process, and no longer explains the electrical control.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-channel adjustable pipette, characterized in that: include: Upper housing (1); A lower shell (2), the bottom of the upper shell (1) being fixedly connected to the lower shell (2); A first pressure rod (3), the first pressure rod (3) being slidably mounted in the upper housing (1) along a vertical direction; A push plate (4), the top end of the first pressure rod (3) is fixedly connected to the push plate (4); A pressure plate (5), wherein the bottom end of the first pressure rod (3) sequentially penetrates the upper shell (1) and the lower shell (2) and extends to the interior of the lower shell (2) and is fixedly connected to the pressure plate (5); An adjusting mechanism (12), wherein an adjusting mechanism (12) is arranged inside the lower shell (2).

2. A multi-channel adjustable pipette according to claim 1, characterized in that: The inner wall of the lower shell (2) is provided with guide grooves (6) on both the left and right sides, and a guide block (7) is slidably connected to the upper part of the inner part of the guide groove (6).

3. A multi-channel adjustable pipette according to claim 2, characterized in that: The side of the guide block (7) away from the guide groove (6) passes through the guide groove (6) and extends to the outside of the guide groove (6) and is fixedly connected to a suction tube (8); the bottom of the suction tube (8) passes through the lower shell (2) and extends to the outside of the lower shell (2) and is threadedly connected to a liquid suction head (9).

4. A multi-channel adjustable pipette according to claim 3, characterized in that: The suction tube (8) is movably connected to a piston (10) inside, and the top of the piston (10) is fixedly connected to a connecting rod (11). The top of the connecting rod (11) passes through the suction tube (8) and extends to the outside of the suction tube (8) and is fixedly connected to the pressure plate (5).

5. A multi-channel adjustable pipette according to claim 4, characterized in that: The adjusting mechanism (12) comprises a top plate (121), a bearing (122), a stud (123), a handle (124) and a connecting plate (125); the top plate (121) is fixedly connected to the rear side of the inner wall of the lower shell (2); the bearing (122) is fixedly installed at the bottom of the top plate (121); the stud (123) is rotatably connected to the bottom of the bearing (122); the bottom end of the stud (123) passes through the lower shell (2) and extends to the outside of the lower shell (2) and is fixedly connected to the handle (124).

6. A multi-channel adjustable pipette according to claim 5, characterized in that: A connecting plate (125) is threadedly connected to the surface of the stud (123), and the connecting plate (125) is fixedly connected to the suction tube (8) at a side close to the suction tube (8).

7. A multi-channel adjustable pipette according to claim 6, characterized in that: The top of the pressure plate (5) is fixedly connected to two symmetrically arranged vertical rods (13); the top of the vertical rod (13) passes through the lower shell (2) and extends to the outside of the lower shell (2) and is fixedly connected to a stopper (14); the vertical rod (13) is movably connected to the lower shell (2); a sleeve spring (15) is sleeved on the surface of the vertical rod (13) and located outside the lower shell (2).

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