CN218530457U

CN218530457U - Needle type filter

Info

Publication number: CN218530457U
Application number: CN202223158266.8U
Authority: CN
Inventors: 桂青云; 刘忠; 桑亚奇
Original assignee: TIANJIN NAVIGATOR LAB INSTRUMENT CO Ltd
Current assignee: TIANJIN NAVIGATOR LAB INSTRUMENT CO Ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-02-28
Anticipated expiration: 2032-11-28

Abstract

The utility model discloses a pin type filter, including last connecting pipe, the bottom fixed mounting who goes up the connecting pipe has the device upper cover, logical groove has been seted up to the both sides of device upper cover. In the utility model, the convex lines are arranged in the upper cover and the body of the device and are used for supporting the filter membrane, so that the filter membrane keeps smaller deformation under the pressure of the sample solution, and the pressure resistance of the filter membrane is improved; meanwhile, partitions for partially blocking liquid are arranged in the upper cover of the device and the device body, so that sample solution in the injector is prevented from directly impacting the filter membrane, and the reliability of the filter is improved; the shell of the needle type filter of the utility model is provided with anti-skid lines, which is convenient for installing and disassembling the filter; the utility model discloses pin filter's filter membrane is double-deck filter membrane, and prefiltration membrane protection millipore filtration avoids the filter to block up.

Description

Needle type filter

Technical Field

The utility model relates to a filter equipment field, concretely relates to pin type filter.

Background

In the fields of conventional quality control analysis, food analysis, environmental sample analysis, dissolution testing, and protein precipitation separation, it is often necessary to filter a sample solution to be analyzed. The needle type filter can be matched with an injector to quickly filter a sample, the needle type filter is disposable, a filter membrane does not need to be replaced, a filter head does not need to be cleaned, and the needle type filter is very convenient to use. Therefore, the needle filter has wide application in various works needing filtering, the inside of the existing needle filter has a larger space, and a large amount of sample solution remains in the filter after filtering is finished, so that the high residue rate of the filter is caused; and the filter membrane of the existing needle filter directly faces the impact of the sample solution, so that the pressure resistance of the filter membrane is poor. In combination with the above-mentioned problems of the needle filter in use, a needle filter has been proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a needle type filter to solve the above-mentioned weak point in the technique.

In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a needle filter, includes the last connecting pipe, the bottom fixed mounting who goes up the connecting pipe has the device upper cover, logical groove has been seted up to the both sides of device upper cover, fixed mounting has the rotation ball on the outside of going up the connecting pipe, the outside of device upper cover is provided with the device body, fixed mounting has the dog on the inside lateral wall of device body, be provided with sealed the pad on the inside lateral wall of device body, just sealed pad is located the top of device upper cover, the bottom fixed mounting of device body has lower connecting pipe, the inlet has been seted up to the inside of going up the connecting pipe, the inside of device upper cover is provided with first protruding line, just the inlet has first wall with the fixed mounting of meeting of device upper cover, the inside of device body is provided with the protruding line of second, the liquid outlet has been seted up to the inside of connecting pipe down, just the fixed mounting of meeting of liquid outlet and device body has the second to cut off, the inside fixed mounting of device body has the filter membrane, just the filter membrane is located between first protruding line of second arch.

As an optimal scheme of the utility model, it rotates the ball to go up to be equipped with on the face of connecting pipe orientation dog, it inlays the surface and rotatable of establishing the connecting pipe on the dog to rotate the ball, and the increase prevents that the needle filter from droing with the friction of syringe needle head.

As a preferred embodiment of the present invention, the stopper installed on the inner side wall of the device body is used in cooperation with the through groove.

As an optimized scheme, the inlet communicates with each other with the inside of device body, moreover the liquid outlet communicates with each other with the inside of device body, and is convenient the utility model discloses a normal use.

As an optimized scheme, be provided with anti-skidding line on the device body, easy to assemble and dismantle the filter.

As an optimized scheme, the filter membrane includes prefiltration membrane and microfiltration membrane, and prefiltration membrane is located the inlet port side, and microfiltration membrane is located the outlet port side, and prefiltration membrane's average pore size is greater than 0.8 microns, and microfiltration membrane's average pore size is less than 0.5 microns, and the filter membrane is double-deck filter membrane, and prefiltration membrane protection microfiltration membrane avoids the filter to block up.

As a preferred scheme, go up this internal being provided with by a plurality of bellied first protruding lines of connecting pipe and device, and a plurality of the network structure that first protruding line constitutes for support the filter membrane for the filter membrane keeps less deformation under the pressure of sample solution, has improved the compressive capacity of filter membrane.

As an optimized scheme of the utility model, go up and be provided with the sealing member between connecting pipe and the device body, and the sealing member is the annular, makes the device airtight, makes things convenient for the device to use.

In the technical scheme, the utility model provides a technological effect and advantage:

in the utility model, the convex lines are arranged in the upper cover and the body of the device and are used for supporting the filter membrane, so that the filter membrane keeps smaller deformation under the pressure of the sample solution, and the pressure resistance of the filter membrane is improved; meanwhile, partitions for partially blocking liquid are arranged in the upper cover of the device and the device body, so that sample solution in the injector is prevented from directly impacting the filter membrane, and the reliability of the filter is improved; the shell of the needle type filter of the utility model is provided with anti-skid lines, which is convenient for installing and disassembling the filter; the utility model discloses pin filter's filter membrane is double-deck filter membrane, and prefiltration membrane protection millipore filtration avoids the filter to block up.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a schematic perspective view of a needle filter according to the present invention;

fig. 2 is a schematic perspective view of an upper connection tube of a needle filter according to the present invention;

fig. 3 is a schematic view of the internal structure of a needle filter according to the present invention.

Description of reference numerals:

1. an upper connecting pipe; 2. an upper cover of the device; 3. a device body; 4. a stopper; 5. a lower connecting pipe; 6. a gasket; 7. rotating the ball; 8. a through groove; 9. a liquid inlet; 10. a first partition; 11. a first raised pattern; 12. filtering the membrane; 13. a second raised pattern; 14. a second partition; 15. and a liquid outlet.

Detailed Description

In order to explain and explain the technical solution and implementation of the present invention more clearly, several preferred embodiments for implementing the technical solution of the present invention are introduced below.

The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, identical or similar reference numerals indicate identical or similar parts and features. The drawings are only schematic representations of the concepts and principles of the embodiments of the disclosure, and do not necessarily show specific dimensions or proportions of the various embodiments of the disclosure. While certain features of the present disclosure and certain embodiments thereof have been illustrated in detail and described in detail in the accompanying drawings, the present disclosure is not limited to the details of the illustrated embodiments, and it is to be understood that such details are not limited to the details of construction and that like reference numerals refer to the same or similar parts throughout the several views.

In the description of the present invention, unless explicitly specified or limited otherwise, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected" and "fixed" are used broadly, and for example, "connected" may be a fixed connection or a detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described with reference to the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

Examples

Referring to the attached drawings 1-3 of the specification, a needle filter, wherein the bottom of an upper connecting pipe 1 is fixedly provided with an upper device cover 2, two sides of the upper device cover 2 are provided with through grooves 8, the outside of the upper connecting pipe 1 is fixedly provided with a rotating ball 7, the outside of the upper device cover 2 is provided with a device body 3, the inside side wall of the device body 3 is fixedly provided with a stop block 4, the inside side wall of the device body 3 is provided with a sealing gasket 6, the sealing gasket 6 is positioned above the upper device cover 2, the bottom of the device body 3 is fixedly provided with a lower connecting pipe 5, the inside of the upper connecting pipe 1 is provided with a liquid inlet 9, the inside of the upper device cover 2 is provided with a first raised grain 11, the joint of the liquid inlet 9 and the upper device cover 2 is fixedly provided with a first partition 10, the inside of the device body 3 is provided with a second raised grain 13, the inside of the lower connecting pipe 5 is provided with a liquid outlet 15, the joint of the filter membrane 15 and the device body 3 is fixedly provided with a second partition 14, the inside of the device body 3 is fixedly provided with a filter membrane 12, and the filter membrane 12 is positioned between the first raised grain 11 and the second raised grain 13;

firstly, when a needle filter is used, a first raised grain 11 and a second raised grain 13 are arranged inside the device upper cover 2 and the device body 3 and are used for supporting the filter membrane 12, so that the filter membrane 12 keeps small deformation under the pressure of a sample solution, and the pressure resistance of the filter membrane 12 is improved; meanwhile, a first partition 10 and a second partition 14 for partially blocking liquid are arranged in the upper cover 2 and the device body 3 of the device, so that the sample solution in the injector is prevented from directly impacting the filter membrane 12, and the reliability of the filter is improved; the device body 3 of the needle type filter of the utility model is provided with anti-skid lines, which is convenient for mounting and dismounting the filter; the utility model discloses needle filter's filter membrane 12 is double-deck filter membrane, including prefiltration membrane and millipore filtration membrane, prefiltration membrane is located inlet 9 sides, and millipore filtration membrane is located the second and cuts off 14 sides, and prefiltration membrane's average pore diameter is greater than 0.8 micron, and millipore filtration membrane's average pore diameter is less than 0.5 micron, and prefiltration membrane protection millipore filtration membrane avoids the filter to block up.

Wherein, last connecting pipe 1 is equipped with rotation ball 7 on the face towards dog 4, rotation ball 7 inlays and establishes the surface and rotatable at connecting pipe 1, increase and the friction of syringe head, prevent that the syringe filter from droing, the dog 4 of installing on the inside side wall of device body 3 all uses with leading to groove 8 mutually supporting, inlet 9 communicates with each other with the inside of device body 3, and liquid outlet 15 communicates with each other with the inside of device body 3, it is convenient the utility model discloses a normal use is provided with anti-skidding line on the device body 3, easy to assemble and dismantlement filter, filter membrane 12 includes prefilter membrane and millipore filtration membrane, prefilter membrane is located inlet 9 side, millipore filtration membrane is located liquid outlet 15 side, prefilter membrane's average pore diameter is greater than 0.8 micron, millipore filtration membrane's average pore diameter is less than 0.5 micron, filter membrane 12 is double-layer filter membrane, prefilter membrane protection millipore filtration membrane avoids the filter jam, it is provided with by a plurality of bellied first protruding 11 to go up connecting pipe 1 and device body 3, and the network structure that a plurality of protruding 11 constitutes, be used for supporting filter membrane 12, make the filter membrane 12 keep less deformation under the pressure line of sample solution, improved, sealed sealing member is provided with the sealing member between the device body and the sealing device, make things convenient for use.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. A needle filter, comprising an upper connecting tube (1), characterized in that: go up the bottom fixed mounting of connecting pipe (1) have device upper cover (2), logical groove (8) have been seted up to the both sides of device upper cover (2), go up fixed mounting on the outside of connecting pipe (1) and have rotation ball (7), the outside of device upper cover (2) is provided with device body (3), fixed mounting has dog (4) on the inside lateral wall of device body (3), be provided with sealed pad (6) on the inside lateral wall of device body (3), just sealed pad (6) are located the top of device upper cover (2), the bottom fixed mounting of device body (3) has lower connecting pipe (5), inlet (9) have been seted up to the inside of going up connecting pipe (1), the inside of device upper cover (2) is provided with first protruding line (11), just inlet (9) and the meeting of device upper cover (2) department fixed mounting have first wall (10), the inside of device body (3) is provided with second arch (13), liquid outlet (15) have been seted up to the inside of connecting pipe (5) down, just the liquid outlet (15) and the device body (3) department fixed mounting have second arch (12) and filter membrane (12) are located protruding device (12) and the filter membrane (12) are located protruding line (11), the inside of filter membrane (12) and the filter membrane (12) are cut off the filter membrane (12) and install ) In the meantime.

2. The needle filter of claim 1, wherein: the upper connecting pipe (1) is provided with a rotating ball (7) on the surface facing the stop block (4), and the rotating ball (7) is embedded on the surface of the upper connecting pipe (1) of the stop block and can rotate.

3. A needle filter according to claim 1, wherein: the stop blocks (4) arranged on the inner side wall of the device body (3) are matched with the through grooves (8) for use.

4. The needle filter of claim 1, wherein: the liquid inlet (9) is communicated with the inside of the device body (3), and the liquid outlet (15) is communicated with the inside of the device body (3).

5. A needle filter according to claim 1, wherein: the device body (3) is provided with anti-skid grains.

6. A needle filter according to claim 1, wherein: the filter membrane (12) comprises a pre-filter membrane and a microporous filter membrane, the pre-filter membrane is positioned on the liquid inlet (9) side, the microporous filter membrane is positioned on the liquid outlet (15) side, the average pore diameter of the pre-filter membrane is larger than 0.8 micrometer, and the average pore diameter of the microporous filter membrane is smaller than 0.5 micrometer.

7. The needle filter of claim 1, wherein: go up connecting pipe (1) and device body (3) and be provided with by a plurality of bellied first protruding line (11), and a plurality of the network structure that first protruding line (11) constitute.

8. A needle filter according to claim 1, wherein: a sealing element is arranged between the upper connecting pipe (1) and the device body (3), and the sealing element is annular.