Suction head assembly for pipettor

Abstract

The utility model discloses a suction head assembly for a pipettor, which comprises a suction head body, the top of the suction head body is in threaded connection with a pipettor connector, and a detachable filter screen is arranged at the upper part in the suction head body. When the filter screen is disassembled, the suction head body is rotated anticlockwise, so that the suction head body is separated from the pipettor connector, then the rubber hook is pulled towards one side far away from the fixed groove, so that the movable plate, the movable rod, the baffle and the clamping block are driven to move towards one side close to the pull ring, and meanwhile, the spring is compressed, so that the filter screen is disassembled. The filter screen can be taken down as long as the pull ring is pulled upwards, the filter screen and the positioning block are driven to move upwards, the positioning block is separated from the positioning groove, the filter screen is separated from the suction head body, and the filter screen can be conveniently detached through the steps. The operation is simple, and any tool is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipettor technical field, concretely is a kind of suction head subassembly for pipettor. BACKGROUND

[0002] Pipettor is also called pipette, is a kind of measuring tool in a certain range, liquid is moved from original container to another container, is widely used in biology, chemistry and other fields.Pipettor is often used to move a small amount or trace amount of liquid in laboratory, and it is a precision instrument.

[0003] According to the patent with the application number CN201621313199.4, a pipettor suction head is disclosed, which includes a suction head body, a pipettor connecting port and a liquid inlet are arranged at both ends of the suction head body respectively; the liquid inlet is a bevel; the angle of the dihedral angle formed between the plane where the liquid inlet is located and the plane where the pipettor connecting port is located is 45°-60°.

[0004] However, the above-mentioned patent has the following defects in actual use: it is not convenient to replace the filter screen, and it is difficult to meet the actual needs of users. Therefore, we propose a suction head subassembly for pipettor. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a suction head subassembly for pipettor to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a suction head subassembly for pipettor, including suction head body, the top of the suction head body is threadedly connected with pipettor connecting head, the inside of the suction head body is provided with detachable filter screen.

[0007] Further, the surface of the filter screen is in movable contact with the inner wall of the suction head body, the top end of the filter screen is fixedly connected with a pull ring, and the left and right sides of the bottom of the filter screen are movably connected with supporting blocks.

[0008] Further, one side of the supporting block is fixedly connected with the inner wall of the suction head body, a positioning groove is formed in the top of the supporting block, a positioning block is movably connected in the positioning groove, the top of the positioning block is fixedly connected with the bottom of the filter screen, and a fixing groove is formed in the top of the left and right sides of the inner wall of the suction head body, a movable clamping block is clamped in the fixing groove.

[0009] Further, the top of the filter screen is fixedly connected with vertical plates on the left and right sides, the side of the vertical plate close to the pull ring is movably connected with a movable plate, and the side of the movable plate close to the pull ring is fixedly connected with a rubber hook.

[0010] Further, the movable plate is fixedly connected with two moving rods on the side away from the pull ring, one end of the moving rods away from the movable plate penetrates through the vertical plate and extends to the outside of the vertical plate, and the same baffle is fixedly connected with the ends of the two moving rods away from the movable plate.

[0011] Further, the movable plate is fixedly connected with two moving rods on the side away from the pull ring, one end of the moving rods away from the movable plate penetrates through the vertical plate and extends to the outside of the vertical plate, and the same baffle is fixedly connected with the ends of the two moving rods away from the movable plate.

[0012] Further, the movable plate is fixedly connected with two moving rods on the side away from the pull ring, one end of the moving rods away from the movable plate penetrates through the vertical plate and extends to the outside of the vertical plate, and the same baffle is fixedly connected with the ends of the two moving rods away from the movable plate.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The utility model discloses when disassembling the filter screen, only need to rotate the suction head body counterclockwise, and then only need to pull the rubber hook to the side away from the fixed groove, and then drive the movable plate, moving rod, baffle and card block to the side close to the pull ring, and the spring is compressed, and then make the card block separate from the fixed groove, then the rubber hook hooks the pull ring, and then only need to pull the pull ring upward, and then drive the filter screen and the positioning block to move upward, and then make the positioning block separate from the positioning groove, and make the filter screen separate from the suction head body, so that the filter screen can be taken down, through above steps, the filter screen can be conveniently disassembled, and the operation is simple, and any tool is not needed. ACCURACY OF DRAWINGS

[0015] Figure 1 It is the front view structure schematic diagram of the utility model;

[0016] Figure 2 It is the front view structure section view of the utility model;

[0017] Figure 3 It is the assembly structure schematic diagram of the suction head body and the pipette connector of the utility model;

[0018] Figure 4 It is the structure schematic diagram of the vertical plate of the utility model;

[0019] Figure 5 It is the bottom view structure schematic diagram of the utility model.

[0020] In the drawing: 1, suction head body;2, pipette connector;3, filter screen;4, pull ring;5, supporting block;6, positioning groove;7, positioning block;8, fixed groove;9, card block;10, vertical plate;11, movable plate;12, rubber hook;13, moving rod;14, baffle;15, spring. SPECIFIC IMPLEMENTATION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0022] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0023] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] Please refer to Figures 1-5 A tip assembly for a pipette, comprising a tip body 1, a pipette connector 2 is threadedly connected to the top of the tip body 1, and a detachable filter screen 3 is arranged above the inside of the tip body 1.

[0025] Specifically, the surface of the filter screen 3 is in movable contact with the inner wall of the tip body 1, a pull ring 4 is fixedly connected to the top middle of the filter screen 3, and support blocks 5 are movably connected to the left and right sides of the bottom of the filter screen 3. By arranging the pull ring 4, the user can easily pull the filter screen 3 out of the tip body 1.

[0026] In the embodiment, the support block 5 is fixedly connected to the inner wall of the suction head body 1 on one side, a positioning groove 6 is formed in the top of the support block 5, a positioning block 7 is movably clamped in the positioning groove 6, the top of the positioning block 7 is fixedly connected to the bottom of the filter screen 3, and a fixed groove 8 is formed in the top of the left and right sides of the inner wall of the suction head body 1, and a clamping block 9 capable of moving horizontally is clamped in the fixed groove 8.

[0027] Specifically, vertical plates 10 are fixedly connected to the top of the left and right sides of the filter screen 3, a movable plate 11 is movably connected to one side of the vertical plate 10 close to the pull ring 4, and a rubber hook 12 is fixedly connected to one side of the movable plate 11 close to the pull ring 4. By arranging the rubber hook 12, when the clamping block 9 is separated from the fixed groove 8, the rubber hook 12 can be hooked on the pull ring 4 to prevent the clamping block 9 from being reset under the elastic force of the spring 15.

[0028] In the embodiment, two moving rods 13 are fixedly connected to one side of the movable plate 11 away from the pull ring 4, one end of each moving rod 13 extends to the outside of the vertical plate 10 through the vertical plate 10, and the same baffle 14 is fixedly connected to the ends of the two moving rods 13 away from the movable plate 11.

[0029] Specifically, the moving rod 13 is movably connected to the vertical plate 10, and the baffle 14 is fixedly connected to the clamping block 9 away from the moving rod 13.

[0030] In the embodiment, the baffle 14 is movably connected to the inner wall of the suction head body 1, and the spring 15 is sleeved on the surface of the moving rod 13 between the baffle 14 and the vertical plate 10.

[0031] In actual application: when the filter screen 3 needs to be disassembled, the suction head body is only needed to be counterclockwise rotated to separate the suction head body 1 from the pipette connector 2, then the rubber hook 12 is only needed to be pulled away from the fixed groove 8 to drive the movable plate 11, the moving rod 13, the baffle 14 and the clamping block 9 to move towards the pull ring 4, and the spring 15 is compressed, so that the clamping block 9 is separated from the fixed groove 8, then the rubber hook is hooked on the pull ring 4, and then the pull ring 4 is only needed to be pulled upwards to drive the filter screen 3 and the positioning block 7 to move upwards, so that the positioning block 7 is separated from the positioning groove 6, and the filter screen 3 is separated from the suction head body 1, thereby the filter screen 3 can be removed, the filter screen 3 can be conveniently disassembled through the above steps, the operation is simple, and any tool is not needed.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A tip assembly for a pipette, comprising a tip body (1), characterized in that: The top of the suction head body (1) is threadedly connected with a pipette connector (2), and the inside of the suction head body (1) is provided with a detachable filter screen (3) above.

2. A pipette tip assembly according to claim 1, characterized in that: The surface of the filter screen (3) is in movable contact with the inner wall of the suction head body (1), the middle of the top end of the filter screen (3) is fixedly connected with a pull ring (4), and the left and right sides of the bottom of the filter screen (3) are movably connected with support blocks (5).

3. A tip assembly for a pipette according to claim 2, wherein: One side of the support block (5) is fixedly connected with the inner wall of the suction head body (1), the top of the support block (5) is provided with a positioning groove (6), the positioning groove (6) is movably connected with a positioning block (7) inside, the top of the positioning block (7) is fixedly connected with the bottom of the filter screen (3), and the left and right sides of the top of the inner wall of the suction head body (1) are provided with fixed grooves (8) inside.

4. A tip assembly for a pipette according to claim 3, wherein: The left and right sides of the top of the filter screen (3) are fixedly connected with vertical plates (10), one side of the vertical plate (10) close to the pull ring (4) is movably connected with a movable plate (11), and one side of the movable plate (11) close to the pull ring (4) is fixedly connected with a rubber hook (12).

5. A tip assembly for a pipette according to claim 4, wherein: One side of the movable plate (11) away from the pull ring (4) is fixedly connected with two moving rods (13), one end of the moving rod (13) away from the movable plate (11) penetrates through the vertical plate (10) and extends to the outside of the vertical plate (10), and the two moving rods (13) are fixedly connected with the same baffle (14) at the end away from the movable plate (11).

6. A tip assembly for a pipette according to claim 5, wherein: The movable plate (11) is movably connected between the moving rod (13) and the vertical plate (10), and one side of the baffle (14) away from the moving rod (13) is fixedly connected with the clamping block (9).

7. A tip assembly for a pipette according to claim 6, wherein: The surface of the baffle (14) is in movable contact with the inner wall of the suction head body (1), and the surface of the moving rod (13) and the position between the baffle (14) and the vertical plate (10) are sleeved with a spring (15).

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