CN219239656U - Injector assembly with good leak resistance - Google Patents

Abstract

The utility model discloses a syringe component with good leak resistance, and particularly relates to the technical field of syringes. The utility model is convenient for improving the tightness of the inner diameters of the piston and the glass tube, preventing the phenomenon of liquid leakage and prolonging the service life of the injector.

Description

Injector assembly with good leak resistance

Technical Field

The utility model relates to the technical field of syringes, in particular to a syringe assembly with good leak resistance.

Background

In the field of research of genetic engineering and protein engineering technology, nucleic acid molecules are main research objects, at present, a main nucleic acid extraction method is a magnetic bead method, and in particular, a liquid-transfering type magnetic bead method is widely applied, namely, extraction and purification of nucleic acid are realized through transferring a reaction solution, and the method comprises the following steps: adding a lysate into a sample, blowing and mixing uniformly, separating nucleic acid from biomacromolecules such as proteins, and repeating the operations of magnetic bead adsorption, removing the lysate, adding a washing liquid to wash the magnetic beads, adsorbing the magnetic beads, removing the washing liquid, adding an elution buffer and the like, thereby obtaining purified nucleic acid. During the above operation, it is important to extract the solution and accurately measure the amount of the reagent used for the reaction result. The syringe is needed for drawing the solution, and the syringe on the market at present is used for a long time, and the joint of the piston and the glass tube has the risk of liquid leakage.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present utility model provide a syringe assembly with good leak-tightness, so as to solve the above-mentioned problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a syringe subassembly that leak protection nature is good, includes glass pipe, piston, connector, end cover, nipple, rand, sealing washer and piston rod, be equipped with the piston in the glass pipe, the outside of piston is equipped with the rand, the sealing washer is established in the draw-in groove between two rands, the right-hand member fixed mounting of glass pipe has the connector, the nipple is installed to the right-hand member of connector, just the end cover is installed to the left end joint of glass pipe, just the piston rod is installed to the left end of piston, the left end of piston rod runs through the outside that the end cover extends to the end cover.

In a preferred embodiment, the piston is made of PTFE material.

In a preferred embodiment, the connector and the nipple are integrally formed, and the connector and the nipple are made of stainless steel materials.

In a preferred embodiment, the collar and the sealing ring are provided with two sets.

In a preferred embodiment, the piston rod is provided with a connecting hole.

Compared with the prior art, the utility model has the technical effects and advantages that:

the piston is arranged in the glass tube, the clamping ring is arranged on the outer side of the piston, the sealing ring is arranged in the clamping groove between the two clamping rings, the piston is made of PTFE material, the piston made of PTFE material has higher matching precision with the inner diameter of the glass tube, and the clamping ring and the sealing ring are provided with two groups, so that the tightness of the inner diameters of the piston and the glass tube is improved, the phenomenon of liquid leakage is prevented, and the service life of the injector is prolonged.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

fig. 2 is a schematic view of the structure of the piston head of the present utility model.

The reference numerals are: 1. a glass tube; 2. a piston; 3. a connector; 4. an end cap; 5. nipple; 6. a collar; 7. a seal ring; 8. a piston rod; 9. and a connection hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

According to the syringe subassembly that leak protection nature is good that fig. 1-2 shows, including glass pipe 1, piston 2, connector 3, end cover 4, nipple 5, rand 6, sealing washer 7 and piston rod 8, be equipped with piston 2 in the glass pipe 1, the outside of piston 2 is equipped with rand 6, the sealing washer 7 is established in the draw-in groove between two rands 6, the right-hand member fixed mounting of glass pipe 1 has connector 3, nipple 5 is installed to the right-hand member of connector 3, just the end cover 4 is installed in the left end joint of glass pipe 1, just piston rod 8 is installed to the left end of piston 2, the left end of piston rod 8 runs through end cover 4 and extends to the outside of end cover 4.

In a preferred embodiment, the piston 2 is made of a PTFE material, and the piston 2 made of the PTFE material has high matching accuracy with the inner diameter of the glass tube 1, so as to prevent leakage.

In a preferred embodiment, the connector 3 and the nipple 5 are integrally formed, and the connector 3 and the nipple 5 are made of stainless steel materials, and the connector 3 and the nipple 5 made of 304-grade stainless steel materials are high in corrosion resistance, not easy to damage and long in service life.

In a preferred embodiment, the collar 6 and the sealing ring 7 are provided with two groups, so that the tightness of the inner diameters of the piston 2 and the glass tube 1 is improved, and leakage is prevented.

In a preferred embodiment, the piston rod 8 is provided with a connecting hole 9, the piston rod 8 is conveniently connected with the piston rod driving structure through the connecting hole 9, and the piston rod driving structure is convenient for driving the piston rod 8 and the piston 2 to suck and discharge liquid.

In summary, the utility model provides a syringe assembly with good leak resistance, the glass tube 1 is provided with the piston 2, the outer side of the piston 2 is provided with the clamping ring 6, the sealing ring 7 is arranged in the clamping groove between the two clamping rings 6, the piston 2 is made of PTFE material, the piston 2 made of PTFE material has higher matching precision with the inner diameter of the glass tube 1, and the clamping ring 6 and the sealing ring 7 are provided with two groups, so that the leak resistance of the piston 2 and the inner diameter of the glass tube 1 is improved, the phenomenon of liquid leakage is prevented, and the service life of the syringe is prolonged.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (5)

1. The utility model provides a syringe subassembly that leak protection nature is good, includes glass pipe (1), piston (2), connector (3), end cover (4), nipple (5), rand (6), sealing washer (7) and piston rod (8), its characterized in that: be equipped with piston (2) in glass pipe (1), the outside of piston (2) is equipped with collar (6), sealing washer (7) are established in the draw-in groove between two collars (6), the right-hand member fixed mounting of glass pipe (1) has connector (3), nipple (5) are installed to the right-hand member of connector (3), just end cover (4) are installed in the left end joint of glass pipe (1), just piston rod (8) are installed to the left end of piston (2), the left end of piston rod (8) runs through the outside that end cover (4) extended to end cover (4).

2. The leak resistant syringe assembly as set forth in claim 1, wherein: the piston (2) is made of PTFE material.

3. The leak resistant syringe assembly as set forth in claim 1, wherein: the nipple (5) and the connector (3) are integrally formed, and the nipple (5) and the connector (3) are made of stainless steel materials.

4. The leak resistant syringe assembly as set forth in claim 1, wherein: the clamping ring (6) and the sealing ring (7) are provided with two groups.

5. The leak resistant syringe assembly as set forth in claim 1, wherein: the piston rod (8) is provided with a connecting hole (9).

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