Pipette fixing device and pipetting workstation

Abstract

The utility model belongs to the technical field of pipetting work stations, and discloses a pipetting gun fixing device and a pipetting work station, the pipetting gun fixing device is used for fixing a pipetting gun, the pipetting gun fixing device comprises a fixing seat, a gun handle bracket and a gun handle fixing assembly, the gun handle bracket is arranged at the bottom of the fixing seat, the gun handle bracket is provided with a penetrating cavity, and the pipetting gun can penetrate through the penetrating cavity; a horizontal placing surface is arranged at the upper end of the gun handle bracket and is used for overlapping the pipette; the gun handle fixing assembly comprises an adjusting block and a surrounding piece, the adjusting block and the surrounding piece are both arranged on the fixing base, and the surrounding piece is provided with an abutting groove. When the pipette is installed, the pipette is arranged in the penetrating cavity in a penetrating mode and connected to the horizontal placing face in a lap joint mode, the adjusting block and the abutting groove correspondingly abut against the two opposite sides of the pipette respectively, the axis of the pipette is perpendicular to the horizontal placing face, the pipette can be positioned and fixed, the perpendicularity of the pipette is guaranteed, and the volume of liquid sucked by the pipette is accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid transfer workstations, in particular to a liquid transfer gun fixing device and a liquid transfer workstation. Background Art

[0002] The pipette is a commonly used tool in the laboratory, used for the precise extraction and transfer of small or trace amounts of liquid in the laboratory. When sampling in the laboratory, one person usually holds the pipette in one hand and the container in the other, and inserts the pipette into the container to take out the quantitative solution. Sampling requires manual operation, and manual operation will bring many human errors, resulting in low pipetting accuracy in sample processing.

[0003] A pipetting workstation is an automated liquid handling platform system that can automatically complete high-precision liquid handling tasks such as gradient dilution, pipetting, and merging liquids. It includes a moving mechanism and a pipette placed on the moving mechanism. The moving mechanism can move the pipette, wherein the pipette includes a handle and a pipette tip. Existing pipetting workstations have low positioning accuracy for the pipette, and cannot guarantee the verticality of the pipette, which will result in inaccurate volume of liquid absorbed by the pipette. Utility Model Content

[0004] The utility model aims to provide a pipette fixing device and a pipette workstation, which can position and fix the pipette, ensure the verticality of the pipette, and make the pipette absorb the liquid volume accurately.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] On the one hand, a pipette fixing device is provided, which is used to fix the pipette, comprising:

[0007] Fixed seat;

[0008] A gun handle bracket is arranged at the bottom of the fixing seat, and the gun handle bracket is provided with a through-hole for the pipette to be passed through; the upper end of the gun handle bracket is provided with a horizontal placement surface for overlapping the pipette;

[0009] The gun handle fixing assembly includes an adjustment block and a surrounding member, both of which are arranged on the fixing seat, and the surrounding member is provided with an abutment groove. The adjustment block and the abutment groove are respectively used to abut against the opposite sides of the pipette gun, and make the axis of the pipette gun perpendicular to the horizontal placement surface.

[0010] Preferably, one end of the enclosure is rotatably connected to the fixing seat, and the other end of the enclosure is detachably connected to the fixing seat.

[0011] Preferably, the pipette fixing device further comprises at least two limit blocks, at least two of the limit blocks are spaced apart on the fixing seat, and the limit blocks are configured to limit the positions of the other two sides of the pipette.

[0012] Preferably, the limiting block is provided with a limiting groove, and the shape of the limiting groove follows the shape of the part of the pipette gun to be abutted.

[0013] Preferably, the gun handle bracket comprises a gun handle bracket body and two brackets, the gun handle bracket body is fixed to the bottom of the fixing seat, the two brackets are relatively arranged on both sides of the gun handle bracket body, and the gun handle bracket body and the two brackets together form the penetration cavity.

[0014] Preferably, the bracket includes a supporting portion and an extending portion, the supporting portion is arranged on the gun handle bracket body, the extending portion is vertically arranged on the supporting portion, and the inner surface of the extending portion is in contact with the outer wall of the pipette gun.

[0015] Preferably, the two brackets are both arranged on the gun handle bracket body in an adjustable manner.

[0016] Preferably, the thickness of the adjustment block is adjustable.

[0017] Preferably, a fixing groove is provided at the upper end of the gun handle bracket, the fixing groove is connected to the penetration cavity, the bottom surface of the fixing groove is the horizontal placement surface, and the shape of the inner side wall of the fixing groove follows the shape of the part of the pipette gun to be abutted.

[0018] On the other hand, a pipetting workstation is provided, comprising a moving mechanism and a pipette fixing device as described in any of the above schemes, wherein the pipette fixing device comprises a fixing seat, and the fixing seat is connected to the moving mechanism.

[0019] Beneficial effects of the utility model:

[0020] The pipette fixing device provided by the utility model is used to fix the pipette, and includes a fixing seat, a gun handle bracket and a gun handle fixing assembly. The gun handle bracket is arranged at the bottom of the fixing seat, the gun handle bracket is provided with a through cavity, and the upper end of the gun handle bracket is provided with a horizontal placement surface; the gun handle fixing assembly includes an adjustment block and a surrounding member, and the adjustment block and the surrounding member are both arranged on the fixing seat, and the surrounding member is provided with an abutment groove. When installing the pipette, the pipette is inserted into the through cavity and overlapped on the horizontal placement surface, and the adjustment block and the abutment groove are respectively correspondingly abutted with the opposite sides of the pipette, so that the axis of the pipette is perpendicular to the horizontal placement surface, the pipette can be positioned and fixed, and the verticality of the pipette is ensured, so that the volume of liquid absorbed by the pipette is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the pipette fixing device provided by the utility model;

[0022] Figure 2 It is a partial structural schematic diagram of the pipette gun fixing device involved in the utility model.

[0023] In the figure:

[0024] 1. Fixed seat;

[0025] 2. gun handle bracket; 21. penetration cavity; 22. gun handle bracket body; 23. bracket; 231. support part; 232. extension part; 24. fixing groove;

[0026] 3. Gun handle fixing assembly; 31. Adjustment block; 32. Enclosure member; 321. Abutment groove; 33. U-shaped hinge seat; 34. Rotating shaft; 35. Fixing block; 36. Fastener;

[0027] 4. Limit block; 41. Limit slot. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] like Figure 1 to Figure 2 As shown, the utility model provides a pipette fixing device for fixing the pipette, the pipette fixing device comprises a fixing seat 1, a gun handle bracket 2 and a gun handle fixing assembly 3, the gun handle bracket 2 is arranged at the bottom of the fixing seat 1, the gun handle bracket 2 is provided with a penetration cavity 21, for the pipette to be penetrated therein; the upper end of the gun handle bracket 2 is provided with a horizontal placement surface, for overlapping the pipette; the gun handle fixing assembly 3 comprises an adjustment block 31 and a surrounding member 32, the adjustment block 31 and the surrounding member 32 are both arranged on the fixing seat 1, the surrounding member 32 is provided with an abutment groove 321, the adjustment block 31 and the abutment groove 321 are respectively used to abut with the opposite sides of the pipette correspondingly, and make the axis of the pipette perpendicular to the horizontal placement surface. When installing the pipette, the pipette is inserted into the insertion cavity 21 and placed on a horizontal placement surface. The adjustment block 31 and the abutment groove 321 are respectively abutted against the opposite sides of the pipette, so that the axis of the pipette is perpendicular to the horizontal placement surface. The pipette can be positioned and fixed to ensure the verticality of the pipette, so that the pipette can absorb the volume of liquid accurately.

[0033] Optionally, in this embodiment, the fixing seat 1 is an inverted T-shaped structure to save materials. Optionally, in this embodiment, the adjustment block 31 is a rectangular block, and the adjustment block 31 is detachably connected to the fixing seat 1. The structure is simple and easy to install. In order to meet the fixation of different types of pipettes, the thickness of the adjustment block 31 is adjustable.

[0034] Optionally, in the present embodiment, the shape of one side of the adjustment block 31 close to the abutment groove 321 follows the shape of the part of the pipette to be abutted, and the shape of the abutment groove 321 follows the shape of the part of the pipette to be abutted, thereby increasing the abutment area and making the fixation of the pipette more secure. In addition, in other embodiments, the abutment groove 321 may not follow the shape of the part of the pipette to be abutted, as long as abutment can be achieved. In order to meet the fixing requirements of different types of pipettes, optionally, in the present embodiment, the gun handle fixing assembly 3 also includes an adjustment strip with adjustable thickness, the adjustment strip is arranged in the abutment groove 321, one side of the adjustment strip is in contact with the abutment groove 321, and the other side of the adjustment strip abuts with the part of the pipette to be abutted.

[0035] Optionally, in the present embodiment, one end of the enclosure 32 is rotatably connected to the fixed seat 1, and the other end of the enclosure 32 is detachably connected to the fixed seat 1. After the pipette gun is overlapped and placed on the horizontal placement surface, the two sides of the pipette gun are respectively abutted against the adjustment block 31 and the abutment groove 321 by rotating and fixing the enclosure 32, and the clamping is convenient and fast, and the quick replacement of the pipette gun can be realized. Optionally, in the present embodiment, the gun handle fixing assembly 3 also includes a U-shaped hinge seat 33 and a rotating shaft 34, one end of the enclosure 32 is arranged in the U-shaped hinge seat 33, and the rotating shaft 34 passes through the U-shaped hinge seat 33 and one end of the enclosure 32, and the structure is simple. Further, in the present embodiment, the gun handle fixing assembly 3 also includes a fixing block 35 and a fastener 36, the fixing block 35 is arranged on the fixed seat 1, and the other end of the enclosure 32 is connected to the fixed seat 1 through the fastener 36, and is firmly installed. Furthermore, in the present embodiment, the fastener 36 is a hand-tightening bolt, a through hole is provided at the other end of the enclosure 32, a threaded hole is provided on the fixing block 35, and the hand-tightening bolt is threadedly connected with the threaded hole through the through hole.

[0036] Optionally, in other embodiments, both ends of the enclosure 32 are detachably connected to the fixing seat 1. After the pipette gun is overlapped and placed on a horizontal placement surface, the two ends of the enclosure 32 are respectively connected to the fixing seat 1, which is simple to install and can realize the positioning and fixing of the pipette gun.

[0037] To achieve more accurate positioning of the pipette, optionally, the pipette fixing device also includes at least two limit blocks 4, at least two limit blocks 4 are arranged at intervals on the fixed seat 1, and the limit blocks 4 are configured to limit the positions of the other two sides of the pipette. To further achieve more accurate positioning of the pipette, optionally, in this embodiment, the limit block 4 is provided with a limit groove 41, and the shape of the limit groove 41 is in accordance with the shape of the part to be abutted by the pipette. Optionally, in this embodiment, the limit block 4 is an L-shaped structure. Optionally, in this embodiment, the limit block 4 is provided with two, and the two limit blocks 4 are symmetrically distributed on the fixed seat 1. Such a setting is simple to process and saves costs. Optionally, in other embodiments, at least two limit blocks 4 are asymmetrically cross-distributed on the fixed seat 1, which can achieve the restriction of the positions of the other two sides of the pipette, and is not limited to this embodiment. In order to meet the fixing requirements of different types of pipettes, optionally, the position of the limit block 4 on the fixed seat 1 is adjustable.

[0038] Optionally, in the present embodiment, the gun handle bracket 2 includes a gun handle bracket body 22 and two brackets 23, the gun handle bracket body 22 is fixed to the bottom of the fixing seat 1, and the two brackets 23 are relatively arranged on both sides of the gun handle bracket body 22, and the gun handle bracket body 22 and the two brackets 23 are surrounded to form a through cavity 21. Such an arrangement has a simple structure and saves costs. In order to achieve more accurate positioning of the pipette gun, optionally, in the present embodiment, the bracket 23 includes a support portion 231 and an extension portion 232, the support portion 231 is arranged on the gun handle bracket body 22, and the extension portion 232 is vertically arranged on the support portion 231, and the inner surface of the extension portion 232 is in contact with the outer wall of the pipette gun. In order to meet the fixing requirements for different types of pipette guns, optionally, in the present embodiment, the two brackets 23 are both arranged on the gun handle bracket body 22 in an adjustable position.

[0039] Optionally, in other embodiments, the gun handle bracket 2 includes a gun handle bracket body 22 and a U-shaped bracket, the gun handle bracket body 22 is fixed to the bottom of the fixing seat 1, and the two ends of the U-shaped bracket are respectively fixed to the two sides of the gun handle bracket body 22, and the gun handle bracket body 22 and the U-shaped bracket surround and form a through cavity 21. Such a configuration has a simple structure.

[0040] To further increase the positioning accuracy of the pipette gun, optionally, in this embodiment, the upper end of the gun handle bracket 2 is provided with a fixing groove 24, the fixing groove 24 is connected to the through cavity 21, the bottom surface of the fixing groove 24 is a horizontal placement surface, and the shape of the inner side wall of the fixing groove 24 follows the shape of the part to be abutted by the pipette gun. Optionally, in other embodiments, the upper surface of the gun handle bracket 2 is a horizontal placement surface. The pipette gun is overlapped on the upper surface of the gun handle bracket 2, which has a simple structure and is easy to process.

[0041] The use process of the pipette fixing device provided in this embodiment is as follows: first, the pipette is passed through the penetration cavity 21 and overlapped and placed on a horizontal placement surface, and is located in the limit groove 41 of the limit block 4, then the enclosure 32 is rotated and fixed by the hand-tightening bolts, so that the adjustment block 31 and the abutment groove 321 respectively abut against the opposite sides of the pipette, so that the axis of the pipette is perpendicular to the horizontal placement surface, and the installation is completed. When replacing the pipette, loosen the hand-tightening bolts, open the enclosure 32, and take out the pipette.

[0042] The utility model also provides a liquid transfer workstation, including a mobile mechanism and a liquid transfer gun fixing device, wherein the liquid transfer gun fixing device includes a fixing seat 1, and the fixing seat 1 is connected to the mobile mechanism. The fixing seat 1 is connected to the mobile mechanism of the liquid transfer workstation, and when the liquid transfer gun is installed, the liquid transfer gun can be positioned and fixed, so as to ensure the verticality of the liquid transfer gun and enable the liquid transfer gun to absorb the liquid accurately.

[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A pipette fixing device, used for fixing a pipette, characterized in that: include: Fixed seat (1); A gun handle bracket (2) is arranged at the bottom of the fixing seat (1), and the gun handle bracket (2) is provided with a penetration cavity (21) for allowing the liquid transfer gun to be penetrated therein; a horizontal placement surface is provided at the upper end of the gun handle bracket (2) for overlapping the liquid transfer gun; The gun handle fixing assembly (3) comprises an adjustment block (31) and a surrounding member (32), wherein the adjustment block (31) and the surrounding member (32) are both arranged on the fixing seat (1), and the surrounding member (32) is provided with an abutment groove (321), and the adjustment block (31) and the abutment groove (321) are respectively used to abut against opposite sides of the pipette gun, and make the axis of the pipette gun perpendicular to the horizontal placement surface.

2. The pipette fixing device according to claim 1, characterized in that: One end of the enclosure member (32) is rotatably connected to the fixing seat (1), and the other end of the enclosure member (32) is detachably connected to the fixing seat (1).

3. The pipette fixing device according to claim 1, characterized in that: The pipette fixing device further comprises at least two limit blocks (4), wherein at least two limit blocks (4) are arranged on the fixing seat (1) at intervals, and the limit blocks (4) are configured to limit the positions of the other two sides of the pipette.

4. The pipette fixing device according to claim 3, characterized in that: The limiting block (4) is provided with a limiting groove (41), and the shape of the limiting groove (41) follows the shape of the part of the pipette gun to be abutted.

5. The pipette fixing device according to claim 1, characterized in that: The gun handle bracket (2) comprises a gun handle bracket body (22) and two brackets (23); the gun handle bracket body (22) is fixed to the bottom of the fixing seat (1); the two brackets (23) are arranged on both sides of the gun handle bracket body (22) opposite to each other; the gun handle bracket body (22) and the two brackets (23) together form the penetration cavity (21).

6. The pipette fixing device according to claim 5, characterized in that: The bracket (23) comprises a supporting portion (231) and an extending portion (232); the supporting portion (231) is arranged on the gun handle bracket body (22); the extending portion (232) is vertically arranged on the supporting portion (231); and the inner surface of the extending portion (232) is in contact with the outer wall of the pipette gun.

7. The pipette fixing device according to claim 5, characterized in that: The two brackets (23) are both arranged on the gun handle bracket body (22) in an adjustable manner.

8. The pipette fixing device according to claim 1, characterized in that: The thickness of the adjustment block (31) is adjustable.

9. The pipette fixing device according to claim 1, characterized in that: A fixing groove (24) is provided at the upper end of the gun handle bracket (2), the fixing groove (24) is in communication with the penetration cavity (21), the bottom surface of the fixing groove (24) is the horizontal placement surface, and the shape of the inner side wall of the fixing groove (24) follows the shape of the portion of the pipette gun to be abutted.

10. A liquid transfer workstation, characterized in that: It comprises a moving mechanism and a pipette fixing device as claimed in any one of claims 1 to 9, wherein the pipette fixing device comprises a fixing seat (1), and the fixing seat (1) is connected to the moving mechanism.

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