Low-adsorption filter element suction head of pipettor

Abstract

The utility model discloses a pipettor low-adsorption filter element suction head which comprises a liquid suction pipe, a reverse blocking pipe, a mounting pipe and an L-shaped clamping block, the reverse blocking pipe is connected with the liquid suction pipe in a clamping mode, the mounting pipe is connected with the reverse blocking pipe in a clamping mode, and the L-shaped clamping block is fixedly connected to the top of the liquid suction pipe. According to the low-adsorption filter element suction head of the pipettor, the liquid suction pipe, the reverse blocking pipe and the mounting pipe are matched with one another, the mounting pipe is inserted into the bottom of the pipettor, and after the suction head is used, the liquid suction pipe is rotated, so that the L-shaped clamping block is separated from the L-shaped clamping groove, and the liquid suction pipe is disassembled, so that the liquid suction pipe is replaced and disassembled, and the labor intensity of workers is reduced. And meanwhile, the filter element is convenient to disassemble and replace, the reverse blocking pipe is rotated, so that the mounting block is separated from the mounting groove, the reverse blocking pipe is disassembled, the bouncy ball is convenient to replace, in the long-time use process, only the independent component in the suction head needs to be replaced, and the use cost is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to biological experiment equipment technical field, concretely relates to a low adsorption filter core suction head of pipettor. BACKGROUND

[0002] The pipettor is also called a liquid transfer gun, which is a device for quantitatively transferring liquid. It is used for precise liquid suction in biological and chemical experiments. In the analysis and testing research, a pipettor is generally used to take a small amount or trace amount of liquid. The suction head is a component used in the liquid suction process with the pipettor and is also a component that greatly affects the liquid suction effect.

[0003] For example, the publication (announcement) number: CN215996716U discloses a low adsorption filter core suction head of pipettor, which includes a suction head body, an interface and a liquid suction port arranged on the top and bottom of the suction head body, a backflow prevention mechanism arranged inside the suction head body, the backflow prevention mechanism includes a sleeve, a spherical plug body and a spring, the inside of the sleeve is a coaxial and unequal diameter cylindrical first cavity and a second cavity, the diameter of the first cavity is larger than that of the second cavity and the first cavity is located above the second cavity, the first cavity and the second cavity are connected by a gradually expanding third cavity, a support plate is arranged on the top of the first cavity, a through hole is arranged on the support plate, a filter core is arranged on the bottom of the second cavity, the plug body is connected with the support plate through the spring, the diameter of the plug body is smaller than the pore diameter of the first cavity and larger than the pore diameter of the second cavity; the utility model effectively solves the problem that the existing pipettor suction head is easy to cause backflow of the suction liquid, resulting in inaccurate quantity and easy pollution, which affects the experimental results.

[0004] However, the low adsorption filter core suction head of the pipettor disclosed above needs to be replaced after use to avoid the mixing of the sampling samples, which makes the use cost of the enterprise higher, so a low adsorption filter core suction head of pipettor is needed. Utility model content

[0005] In view of the problems existing in the prior art, the utility model provides a low adsorption filter core suction head of pipettor.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A low adsorption filter core suction head of pipettor, comprising: a liquid suction tube, a reverse blocking tube and a mounting tube, the reverse blocking tube is connected with the liquid suction tube, and the mounting tube is connected with the reverse blocking tube.

[0008] Preferably, it further comprises:

[0009] An L-shaped clamping block is fixedly connected to the top of the liquid suction tube.

[0010] A limiting ring is fixedly connected to the inner wall of the liquid suction pipe.

[0011] Preferably, the device further comprises:

[0012] An inner tube is fixedly connected to the inside of the reverse flow pipe.

[0013] A rubber pressing piece is fixedly connected to the inner wall of the reverse flow pipe and is located above the inner tube.

[0014] A spring ball is embedded below the rubber pressing piece.

[0015] A seating groove is formed in the top of the reverse flow pipe.

[0016] Preferably, the device further comprises:

[0017] An L-shaped clamping groove is formed in the inner wall of the reverse flow pipe, and an L-shaped clamping block is clamped in the L-shaped clamping groove.

[0018] A positioning ring is fixedly connected to the inner wall of the reverse flow pipe.

[0019] A filter core is installed between the positioning ring and the limiting ring.

[0020] Preferably, the device further comprises:

[0021] A pressing ring is installed on the top of the seating groove.

[0022] A breathable mesh is formed on the surface of the pressing ring.

[0023] Preferably, the device further comprises:

[0024] An installation block is fixedly connected to the surface of the reverse flow pipe.

[0025] An installation groove is formed in the inner wall of the installation pipe.

[0026] A locking ring is fixedly connected to the inner wall of the installation pipe.

[0027] Preferably, the device further comprises:

[0028] A sealing gasket is installed on the inner wall of the installation pipe.

[0029] A reinforcing rib is fixedly connected to the surface of the installation pipe.

[0030] A triangular block is fixedly connected to the inner wall of the installation pipe.

[0031] Compared with the prior art, the device has the following beneficial effects:

[0032] 1. The utility model discloses a low adsorption filter element suction head of pipettor is realized by the cooperation between the suction tube, the reverse pipe and the installation pipe, the installation pipe is inserted in the bottom of pipettor, after the use of the suction head, rotates the suction tube, makes L type joint block separate from L type joint groove, and the suction tube is disassembled to replace and disassemble the suction tube conveniently, also convenient to the filter core is disassembled and is replaced, rotates the reverse pipe, makes the mounting block separate from the installation groove, and the reverse pipe is disassembled to replace the elastic ball, in the long use process, only need to replace the individual component in the suction head, greatly reduced the use cost.

[0033] 2. The utility model discloses a rubber pressing piece is arranged, so that the elastic ball is not easy to deviate in the lifting process, guarantee the accuracy when the elastic ball falls.

[0034] 3. The utility model discloses a sealing gasket is arranged, guarantee the sealing property of installation pipe installation.

[0035] 4. The utility model discloses a triangular block is arranged, improves the friction of installation pipe installation, improves the stability of installation pipe installation. DRAWINGS

[0036] Figure 1 It is the structure section view of the utility model front view;

[0037] Figure 2 It is the structure diagram of the suction tube and L type joint block of the utility model;

[0038] Figure 3 It is the structure section view of the reverse pipe, inner tube, installation groove, L type joint groove and mounting block of the utility model;

[0039] Figure 4 It is the structure section view of the installation pipe, installation groove and reinforcing rib of the utility model;

[0040] Figure 5 It is the structure diagram of the utility model lower pressure ring and breathable mesh.

[0041] In the drawing:

[0042] 1 suction tube, 2 reverse pipe, 3 installation pipe, 4 L type joint block, 5 limit ring, 6 inner tube, 7 rubber pressing piece, 8 elastic ball, 9 installation groove, 10 L type joint groove, 11 positioning ring, 12 filter core, 13 lower pressure ring, 14 breathable mesh, 15 mounting block, 16 installation groove, 17 locking ring, 18 sealing gasket, 19 reinforcing rib, 20 triangular block. DETAILED DESCRIPTION

[0043] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope of the utility model protection.

[0044] As Figures 1-5 shown, the utility model provides an embodiment, a low adsorption filter head of pipette, include: pipette 1, block pipe 2 with installation pipe 3, block pipe 2 with pipette 1 are jointed, installation pipe 3 with block pipe 2 are jointed.

[0045] Mounting block 15, mounting block 15 fixedly connected at the surface of block pipe 2.

[0046] Mounting groove 16, mounting groove 16 is set up in the inner wall of installation pipe 3, rotates block pipe 2, so that mounting block 15 is separated from mounting groove 16, block pipe 2 is disassembled, so as to replace elastic ball 8, only the individual component in the suction head needs to be replaced in the long use process, greatly reduces the use cost.

[0047] Locking ring 17, locking ring 17 fixedly connected in the inner wall of installation pipe 3, the lower pressing ring 13 is limited, avoids the loosening of lower pressing ring 13.

[0048] L-shaped joint block 4, L-shaped joint block 4 is fixedly connected at the top of pipette 1.

[0049] Limiting ring 5, limiting ring 5 is fixedly connected in the inner wall of pipette 1.

[0050] Inner tube 6, inner tube 6 is fixedly connected in the inside of block pipe 2, the aperture in the top of inner tube 6 is same diameter with elastic ball 8 and can be closely attached with elastic ball 8.

[0051] Rubber pressing sheet 7, rubber pressing sheet 7 is fixedly connected in the inner wall of block pipe 2 and is located above inner tube 6, so that elastic ball 8 is not easy to deviate in the lifting process, guarantee the accuracy when elastic ball 8 falls.

[0052] Elastic ball 8, elastic ball 8 is embedded below rubber pressing sheet 7.

[0053] Arrangement groove 9, arrangement groove 9 is set up in the top of block pipe 2.

[0054] Lower pressing ring 13, lower pressing ring 13 is installed at the top of arrangement groove 9.

[0055] Breathable mesh 14, breathable mesh 14 is set up in the surface of lower pressing ring 13, limits elastic ball 8 at the same time without affecting the suction effect.

[0056] The L-shaped clamping groove 10 is arranged on the inner wall of the reverse prevention pipe 2, the L-shaped clamping block 4 is clamped in the L-shaped clamping groove 10, the mounting pipe 3 is inserted into the bottom of the pipette, after the use of the suction head, the suction tube 1 is rotated, so that the L-shaped clamping block 4 is separated from the L-shaped clamping groove 10, the suction tube 1 is disassembled, so that the replacement and disassembly of the suction tube 1 are completed, and the filter element 12 is also disassembled and replaced.

[0057] The positioning ring 11 is fixedly connected to the inner wall of the reverse prevention pipe 2.

[0058] The filter element 12 is arranged between the positioning ring 11 and the limiting ring 5.

[0059] The sealing gasket 18 is arranged on the inner wall of the mounting pipe 3, so that the sealing performance of the mounting pipe 3 is ensured.

[0060] The reinforcing rib 19 is fixedly connected to the surface of the mounting pipe 3, so that the strength of the mounting pipe 3 is enhanced, and the stability during use is ensured.

[0061] The triangular block 20 is fixedly connected to the inner wall of the mounting pipe 3, so that the friction during installation of the mounting pipe 3 is improved, and the stability during installation of the mounting pipe 3 is improved.

[0062] In order to facilitate the understanding of the above technical scheme of the present application, the working principle or operation mode of the present application in the actual process will be described in detail.

[0063] The low-adsorption filter element suction head of the pipette is used, the mounting pipe 3 is arranged on the suction head, after the completion of the pipetting operation, the suction tube 1 is rotated, so that the L-shaped clamping block 4 is separated from the L-shaped clamping groove 10, the suction tube 1 is disassembled, so that the replacement and disassembly of the suction tube 1 are completed, and the filter element 12 is also disassembled and replaced, the reverse prevention pipe 2 is rotated, so that the mounting block 15 is separated from the mounting groove 16, the reverse prevention pipe 2 is disassembled, so that the elastic ball 8 is replaced, different components are replaced according to requirements, and the use cost is reduced.

[0064] To sum up, the low-adsorption filter element suction head of the pipette is matched among the suction tube 1, the reverse prevention pipe 2 and the mounting pipe 3, and the problems in the background art are solved.

[0065] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pipette low-adsorption filter cartridge tip, comprising: The utility pipe (1), the reverse pipe (2) and the installation pipe (3) are characterized in that: the reverse pipe (2) is clamped with the utility pipe (1), and the installation pipe (3) is clamped with the reverse pipe (2).

2. The low-adsorption filter tip for a pipette of claim 1, wherein: Also include; The L-shaped clamping block (4) is fixedly connected to the top of the utility pipe (1); The limiting ring (5) is fixedly connected to the inner wall of the utility pipe (1).

3. The low-adsorption filter tip for a pipette of claim 2, wherein: Also include; The inner pipe (6) is fixedly connected to the inside of the reverse pipe (2); The rubber pressing sheet (7) is fixedly connected to the inner wall of the reverse pipe (2) and is located above the inner pipe (6); The elastic ball (8) is embedded below the rubber pressing sheet (7); The installation groove (9) is arranged on the top of the reverse pipe (2).

4. The low-adsorption filter tip for a pipette of claim 3, wherein: Also include; The L-shaped clamping groove (10) is arranged on the inner wall of the reverse pipe (2), and the L-shaped clamping block (4) is clamped in the L-shaped clamping groove (10); The positioning ring (11) is fixedly connected to the inner wall of the reverse pipe (2); The filter core (12) is installed between the positioning ring (11) and the limiting ring (5).

5. The low-adsorption filter tip for a pipette of claim 4, wherein: Also include; The lower pressing ring (13) is installed on the top of the installation groove (9); The air-permeable mesh (14) is arranged on the surface of the lower pressing ring (13).

6. The low-adsorption filter tip for a pipette of claim 5, wherein: Also include; The mounting block (15) is fixedly connected to the surface of the reverse pipe (2); The installation groove (16) is arranged on the inner wall of the installation pipe (3); The locking ring (17) is fixedly connected to the inner wall of the installation pipe (3).

7. The low-adsorption filter tip for a pipette of claim 6, wherein: Also include; The sealing gasket (18) is installed on the inner wall of the installation pipe (3); The reinforcing rib (19) is fixedly connected to the surface of the installation pipe (3); The triangular block (20) is fixedly connected to the inner wall of the installation pipe (3).

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