CN217829579U

CN217829579U - Needle filter

Info

Publication number: CN217829579U
Application number: CN202222262674.1U
Authority: CN
Inventors: 赵印; 粟丽; 赵怀萍
Original assignee: Guizhou Primitive Qingmang Technology Co ltd
Current assignee: Guizhou Primitive Qingmang Technology Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-11-18
Anticipated expiration: 2032-08-26

Abstract

The utility model discloses a syringe needle filter, including filtering the cavity, the top of filtering the cavity connects the inlet tube, and the bottom connects the outlet tube, is provided with a bearing structure who possesses unsmooth structure at filtration cavity middle part level, is equipped with the filtration membrane that possesses the fold on bearing structure, filtration membrane laminating is supported its fold by bearing structure on bearing structure, and filtration membrane will filter the cavity and separate for the two parts that do not communicate each other. The utility model has the advantages of under the condition that does not enlarge original filtration cavity, increased filtration membrane's filter area, through carrying out fold processing to filtration membrane, very big increase the see-through area, reduce the filtration resistance, do not resume the horizontality under long-term hydraulic state in order to guarantee the fold, still increased bearing structure and supported filtration membrane for it can keep the shape undeformability of fold.

Description

Needle filter

Technical Field

The utility model relates to a syringe needle filter.

Background

Before the liquid sample is subjected to spectral analysis, a needle filter is generally required to be additionally arranged for treatment due to the influence of impurities, but the filtering membrane of the conventional needle filter is arranged in a plane, the volume of a filtering chamber is limited, and the filtering chamber cannot be large, so that the area of the filtering membrane is limited, the filtering resistance is large due to the limited area during pressure filtering, the filtering efficiency is low on one hand, and the filtering membrane is broken on the other hand.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a can effectively reduce and strain the needle head filter that hinders, and does not need the increase to filter the cavity volume.

The technical scheme of the utility model is that:

the utility model provides a syringe needle filter, includes and filters the cavity, filters the top of cavity and connects the inlet tube, and the bottom connects the outlet tube, is provided with a bearing structure who possesses unsmooth structure at filtration cavity middle part level, lays the filtration membrane that possesses the fold on bearing structure, filtration membrane laminating is supported its fold by bearing structure on bearing structure, and filtration membrane separates the filtration cavity for two parts that do not communicate each other.

Furthermore, the supporting structure comprises a horizontal cross support and a supporting ring which is arranged on the horizontal cross support in a multilayer surrounding manner, the filtering membrane is provided with a plurality of layers of annular concave parts and convex parts which are arranged in a staggered manner, and the convex parts are erected on the supporting ring.

Furthermore, the cross section of the concave part is trapezoidal.

Furthermore, the filtering chamber is composed of an upper cavity body and a lower cavity body which are buckled with each other, the top of the lower cavity body is integrally connected with a clamping ring, and the inner wall of the clamping ring is provided with an annular step which is matched with a pressing platform at the bottom of the upper cavity body to fix the edge of the filtering membrane.

Furthermore, the upper cavity and the lower cavity are funnel-shaped.

The utility model discloses an useful part lies in:

the utility model has the advantages of under the condition that does not enlarge original filtration cavity, increased filtration membrane's filter area, through carrying out fold treatment to filtration membrane, very big increase the see-through area, reduce the filtration resistance, do not resume horizontality under long-term hydraulic state in order to guarantee the fold, still increased bearing structure and supported filtration membrane for its shape that can keep the fold is indeformable.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is a schematic view of the structure of the lower cavity.

In the figure: 1-upper cavity, 11-liquid inlet pipe, 12-pressing table, 2-clamping ring, 21-annular ladder, 22-horizontal cross bracket, 23-supporting ring, 3-filtering membrane, 31-convex part, 32-concave part, 4-lower cavity and 41-liquid inlet pipe.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-2:

the utility model provides a syringe needle filter, includes and filters the cavity, filters the top of cavity and connects inlet tube 4111, and the liquid outlet pipe is connected to the bottom, is provided with a bearing structure who possesses unsmooth structure at filtration cavity middle part level, lays the filtration membrane 3 that possesses the fold on bearing structure, filtration membrane 3 laminates on bearing structure, is supported its fold by bearing structure, and filtration membrane 3 separates the filtration cavity for two parts that do not communicate each other.

The utility model has the advantages of under the condition that does not enlarge original filtration cavity, increased filtration membrane 3's filter area, through carrying out fold processing to filtration membrane 3, very big increase the see-through area, reduce the filtration resistance, do not resume the horizontality under long-term hydraulic state in order to guarantee the fold, still increased bearing structure and supported filtration membrane 3 for its shape that can keep the fold is indeformable.

Specifically, the supporting structure includes horizontal cross support 22 and is that the multilayer encircles the support ring 23 that sets up on horizontal cross support 22 and constitutes, filtration membrane 3 possesses multilayer staggered arrangement annular depressed part 32 and bellying 31, its bellying 31 sets up on support ring 23, support through support ring 23 to bellying 31, thereby play the effect of fixed depressed part 32 shape, make its firm of guaranteeing the form under long-term hydraulic pressure state, consider that processing is convenient, and simple to operate, the cross section of depressed part 32 is trapezoidal.

The filtering chamber can be composed of an upper cavity 1 and a lower cavity 4 which are mutually buckled, the split structure is convenient for production and die sinking, the top of the lower cavity 4 is integrally connected with a clamping ring 2, the inner wall of the clamping ring 2 is provided with an annular step 21, and the edge of the filtering membrane 3 is fixed by a pressing platform 12 at the bottom of the upper cavity 1 in a matching manner, so that the sealing purpose is achieved, and the liquid to be treated is filtered.

The upper cavity 1 and the lower cavity 4 may be funnel-shaped, so as to guide the liquid.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. A needle filter, comprising: including filtering the cavity, the top of filtering the cavity connects the inlet tube, and the bottom connects the liquid outlet pipe, is provided with a bearing structure who possesses unsmooth structure at the level of filtering cavity middle part, lays the filtration membrane that possesses the fold on bearing structure, filtration membrane laminating is supported its fold by bearing structure on bearing structure, and filtration membrane will filter the cavity and separate for two parts that do not communicate each other.

2. The needle filter of claim 1, wherein: the supporting structure comprises a horizontal cross support and a supporting ring which is arranged on the horizontal cross support in a multi-layer surrounding mode, the filtering membrane is provided with a plurality of layers of annular concave parts and convex parts which are arranged in a staggered mode, and the convex parts are erected on the supporting ring.

3. The needle filter of claim 2, wherein: the cross section of the concave part is trapezoidal.

4. The needle filter of claim 1, wherein: the filtering cavity is composed of an upper cavity body and a lower cavity body which are buckled with each other, the top of the lower cavity body is integrally connected with a clamping ring, and the inner wall of the clamping ring is provided with an annular ladder which is matched with a pressing table at the bottom of the upper cavity body to fix the edge of the filtering membrane.

5. The needle filter of claim 4, wherein: the upper cavity and the lower cavity are funnel-shaped.