CN213633308U - Syringe filtering membrane for detection - Google Patents

Abstract

The utility model relates to a food detection technology field, concretely relates to syringe filtration membrane of usefulness detects, its structure includes the syringe, the filtration membrane ware of being connected with the syringe, the injection mouth of syringe is established to the injection mouthpiece, the both sides of filtering the membrane ware are equipped with the feed liquor mouthpiece respectively and go out the liquid mouthpiece, the feed liquor mouthpiece outwards extends one section screwed pipe that can with injection mouthpiece threaded connection, or the injection mouthpiece outwards extends one section screwed pipe that can be connected with the feed liquor mouthpiece, the bore of injection mouthpiece and the bore of feed liquor mouthpiece all are greater than the bore of screwed pipe, the injection mouthpiece comes mutual butt with the feed liquor mouthpiece and is in the same place through the screwed pipe, this syringe filtration membrane can prevent that sample solution from spattering outward, and is simple in structure, easy operation's advantage.

Description

Syringe filtering membrane for detection

Technical Field

The utility model relates to a food detects technical field, concretely relates to syringe filtration membrane of usefulness detects.

Background

The residue of additives, illegally added substances, pesticides and veterinary drugs is measured by a liquid chromatograph or a liquid chromatograph tandem mass spectrometer for food detection. In practice, the sample to be tested needs to pass through a liquid chromatography column. In order to prevent the liquid chromatographic column from being blocked and scrapped, the execution standard requires that a sample to be detected passes through an organic or water-based filter membrane with the diameter of 13mm and the diameter of 0.22 mu m before entering the liquid chromatographic column, wherein the specific operation steps for filtering the sample to be detected are as follows: the disposable syringe was then attached to a 0.22 μm filter, and the sample to be filtered was added to the syringe, and the syringe plunger rod was then squeezed, filtering the sample into the injection vial. However, the above-mentioned filtering devices still have the disadvantages: the syringe is only simply emboliaed with the filter membrane and is connected, when filtering and gluing thick sample, in case exert oneself improper or too big, because the interior pressure that the interface of syringe and filter membrane received is too big, syringe and filter membrane will be separated, and liquid in the syringe will splash out with it, so not only threatens laboratory technician's personal safety, has still led to experimental error and has brought the inconvenience for the experiment operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a syringe filtration membrane of detection usefulness that can prevent that sample solution from spattering outward, it has simple structure, easy to operate's advantage.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a syringe filtration membrane of usefulness detects, include the syringe, with the filtration membrane ware that the syringe is connected, the injection mouth of syringe is established to the injection mouthpiece, the both sides of filtering the membrane ware are equipped with the feed liquor mouthpiece respectively and go out the liquid mouthpiece, the feed liquor mouthpiece outwards extend can with one section screwed pipe of injection mouthpiece threaded connection, or the injection mouthpiece outwards extend can with one section screwed pipe that the feed liquor mouthpiece is connected, the bore of injection mouthpiece with the bore of feed liquor mouthpiece all is greater than the bore of screwed pipe, the injection mouthpiece with the feed liquor mouthpiece passes through the mutual butt of screwed pipe is together.

Wherein, the bore of feed liquor mouthpiece with the bore of injection mouthpiece is the same, the feed liquor mouthpiece with the injection mouthpiece can splice into the straight tube body.

Wherein, the opening of inlet pipe mouth is along week or the opening of injection nozzle is along being equipped with the sealing washer, thereby inlet pipe mouth with between the injection nozzle via the sealing washer mutual butt.

The liquid inlet pipe nozzle is characterized in that a groove ring is arranged on the opening peripheral edge of the liquid inlet pipe nozzle or the opening peripheral edge of the injection pipe nozzle, and the sealing ring is embedded into the groove ring and is fixed on the opening peripheral edge.

The periphery of the opening of the liquid inlet pipe nozzle protrudes outwards for a circle of insertion tongue, and the periphery of the opening of the injection pipe nozzle is provided with a circle of insertion groove for the insertion tongue to insert; or the periphery of the opening of the injection nozzle protrudes outwards for a circle of insertion tongue, and the periphery of the opening of the liquid inlet nozzle is provided with a circle of insertion groove for the insertion tongue to insert.

Wherein, filter membrane ware is including sealed casing, filter membrane is accompany in the middle part of casing, the both sides of casing extend the feed liquor mouth of pipe with go out the liquid mouth of pipe.

Still provide a body coupling syringe filtration membrane of detection usefulness, including the syringe, with the filtration membrane ware that the syringe is connected, the both sides of filtering the membrane ware are equipped with feed liquor mouthpiece and play liquid mouthpiece respectively, the injection nozzle of syringe with the feed liquor mouthpiece body coupling of filter membrane.

Compared with the prior art, the beneficial effects of the utility model are that:

the syringe and the filtering membrane device of the utility model are connected together through the threaded pipe, and the threaded pipe effectively strengthens the connection strength of the syringe and the filtering membrane device, thereby preventing the sample solution at the interface of the syringe and the filtering membrane device from leaking or splashing out, so that not only can the sample be rapidly filtered by increasing the force, but also the problem that the content loss of the sample solution affects the detection precision is avoided; in addition, the injector and the filtering membrane device of the utility model can be connected integrally; the syringe filtering membrane has the advantages of easy operation and simple structure, and is suitable for large-scale production and application.

Drawings

Fig. 1 is a schematic structural diagram of a filtering membrane of a syringe for detection according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural diagram of the working states of the sealing ring and the groove ring;

FIG. 4 is a schematic structural view of the tongue and the slot in operation;

fig. 5 is a schematic structural diagram of an integrally connected syringe filtering membrane for detection according to the present invention.

Reference numerals:

an injector 1; a filtering membrane device 2; an injection nozzle 3; a liquid inlet pipe mouth 4; a liquid outlet pipe nozzle 5; a threaded pipe 6; a seal ring 7; a groove ring 8; a tongue 9; a slot 11; a housing 12; an opening peripheral edge 13; threads 14.

Detailed Description

To better illustrate the objects, technical solutions and advantages of the present invention, the present invention will be described in detail with reference to the following embodiments and accompanying drawings.

The syringe filter membrane for detection of the embodiment is shown in fig. 1, and includes a syringe 1 and a filter membrane device 2, an injection nozzle of the syringe 1 is an injection nozzle 3, the injection nozzle 3 is in a tubular shape, a liquid inlet nozzle 4 and a liquid outlet nozzle 5 are respectively arranged at two sides of the filter membrane device 2, the liquid inlet nozzle 4 and the liquid outlet nozzle 5 are also in a tubular shape, as shown in fig. 2, a section of threaded pipe 6 capable of being connected with a thread 14 of the injection nozzle 3 extends outwards from the liquid inlet nozzle 4, where an external thread 14 is arranged at the outer peripheral side of the threaded pipe 6, and an internal thread 14 is arranged in the injection nozzle 3; or the injection nozzle 3 extends outwards to form a section of threaded pipe 6 which can be connected with the liquid inlet nozzle 4, wherein the outer periphery of the threaded pipe 6 is provided with an external thread 14, and the inside of the liquid inlet nozzle 4 is provided with an internal thread 14; the bore of injection mouthpiece 3 and the bore of feed liquor mouthpiece 4 all are greater than the bore of screwed pipe 6, and screwed pipe 6 is formed with the butt face with the junction of injection mouthpiece 3 or feed liquor mouthpiece 4 like this, and feed liquor mouthpiece 4 and injection mouthpiece 3 can be in the same place each other butt when connecting through screwed pipe 6 to improved feed liquor mouthpiece 4 and injection mouthpiece 3 be connected closely the degree, further prevented that sample solution from spattering outward. Preferably, the caliber of the liquid inlet pipe mouth 4 is the same as that of the injection pipe mouth 3, and the liquid inlet pipe mouth 4 and the injection pipe mouth 3 can be spliced into a straight pipe body, so that the sealing performance can be kept while materials are saved.

In this embodiment, as shown in fig. 3, the opening peripheral edge 13 of the inlet nozzle 4 or the opening peripheral edge 13 of the injection nozzle 3 is provided with the gasket 7, the gasket 7 is arranged along the opening peripheral edge 13, the inlet nozzle 4 and the injection nozzle 3 are abutted against each other via the gasket 7, and the gasket 7 can further improve the connection sealing property. Wherein, the opening peripheral edge 13 of the liquid inlet nozzle 4 or the opening peripheral edge 13 of the injection nozzle 3 is provided with a groove ring 8, and the sealing ring 7 is embedded into the groove ring 8 so as to be fixed on the opening peripheral edge 13, thus the sealing ring 7 is stably installed.

Alternatively, as shown in fig. 4, a circle of insertion tongues 9 protrudes outwards from the opening peripheral edge 13 of the liquid inlet nozzle 4, and a circle of insertion grooves 11 for the insertion tongues 9 to insert into is formed in the opening peripheral edge 13 of the injection nozzle 3; or the opening peripheral edge 13 of the injection nozzle 3 protrudes outwards for a circle of insertion tongue 9, the opening peripheral edge 13 of the liquid inlet nozzle 4 is provided with a circle of insertion for the insertion tongue 9 to insert, the insertion tongue 9 and the insertion groove 11 are matched to completely seal the interface of the liquid inlet nozzle 4 and the injection nozzle 3, and the connection sealing performance is further improved.

In this embodiment, the filtering membrane device 2 comprises a sealed shell 12, a filtering membrane is clamped in the middle of the shell 12, a liquid inlet pipe nozzle 4 and a liquid outlet pipe nozzle 5 extend out of two sides of the shell 12, and the filtering membrane can be directly purchased from the market.

Still provide an organic whole connection syringe filtration membrane of usefulness, figure 5 shows, including syringe 1, the filtration membrane ware 2 of being connected with syringe 1, the both sides of filtering membrane ware 2 are equipped with feed liquor mouthpiece 4 and play liquid mouthpiece 5 respectively, and the injection nozzle of syringe 1 and the feed liquor mouthpiece 4 an organic whole of filter membrane are connected to more can save the time of installation syringe 1 and filtration membrane ware 2, be more convenient for improve experimental efficiency.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims (7)

1. A syringe filter membrane for detection, characterized in that: including the syringe, with the filtration membrane ware that the syringe is connected, the injection mouth of syringe is established to the injection mouthpiece, the both sides of filtering the membrane ware are equipped with the feed liquor mouthpiece respectively and go out the liquid mouthpiece, the feed liquor mouthpiece outwards extend can with one section screwed pipe of injection mouthpiece threaded connection, or the injection mouthpiece outwards extends can with one section screwed pipe that the feed liquor mouthpiece is connected, the bore of injection mouthpiece with the bore of feed liquor mouthpiece all is greater than the bore of screwed pipe, the injection mouthpiece with the feed liquor mouthpiece passes through the screwed pipe comes mutual butt and is in the same place.

2. A syringe filter membrane for detection according to claim 1, wherein: the bore of the liquid inlet pipe nozzle is the same as that of the injection pipe nozzle, and the liquid inlet pipe nozzle and the injection pipe nozzle can be spliced into a straight pipe body.

3. A syringe filter membrane for detection according to claim 2, wherein: still include the sealing washer, the sealing washer is followed the opening week of feed liquor mouthpiece is followed or the opening week of injection nozzle is followed and is set up, thereby the feed liquor mouthpiece with the injection nozzle is cliied the mutual butt of sealing washer.

4. A syringe filter membrane for detection according to claim 3, wherein: the opening periphery of the liquid inlet pipe nozzle or the opening periphery of the injection pipe nozzle is provided with a groove ring, and the sealing ring is embedded into the groove ring and is fixed on the opening periphery.

5. A syringe filter membrane for detection according to claim 1, wherein: the periphery of the opening of the liquid inlet pipe nozzle protrudes outwards for a circle of insertion tongue, and the periphery of the opening of the injection pipe nozzle is provided with a circle of insertion groove for the insertion tongue to insert; or the periphery of the opening of the injection nozzle protrudes outwards for a circle of insertion tongue, and the periphery of the opening of the liquid inlet nozzle is provided with a circle of insertion groove for the insertion tongue to insert.

6. A syringe filter membrane for detection according to claim 1, wherein: the filtration membrane ware is including sealed casing, filtration membrane is accompany in the middle part of casing, the both sides of casing extend the feed liquor mouth of pipe with go out the liquid mouth of pipe.

7. The utility model provides an integrative connection syringe filtration membrane of usefulness detects which characterized in that: including the syringe, with the filtration membrane ware that the syringe is connected, the both sides of filtering the membrane ware are equipped with feed liquor mouthpiece respectively and go out the liquid mouthpiece, the injection nozzle of syringe with the feed liquor mouthpiece body coupling of filter membrane.

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