Pre-assembled primary filter

Abstract

The utility model provides a preassembled primary filter which comprises a filter screen with a filter section and a connector section, a supporting piece arranged on the filter section and a connector piece arranged on the connector section, and the connector piece and the supporting piece are both located on the same side of the filter screen; the interface piece is provided with a first connecting piece; the supporting piece is provided with a second connecting piece; after the first connecting piece is connected with the second connecting piece, the connector section is perpendicular to the filtering section. According to the invention, the overall size of the whole primary filter can be reduced under the condition that the size of the filter screen is not changed by utilizing the connection relationship between the two structural members on the primary filter, so that the filtering efficiency and the dust holding capacity of the primary filter are ensured, and the assembly requirement of a limited space can be met.

Description

Technical Field

[0001] The present invention belongs to the technical field of filters, and particularly relates to a pre-assembled primary filter. Background Art

[0002] Currently, in an automotive fuel system, the filter is sometimes restricted by the spatial structure and needs to be installed in a limited space. In this case, either the size of the filter is made smaller, or the structure of the filter is changed. The former cannot meet the performance requirements of the filtration efficiency and dust capacity of the filter, and the latter cannot achieve the purpose of changing the overall structure of the filter by changing the structure of the filter screen because the filter screen is made of flexible material. Summary of the Invention

[0003] The purpose of the present invention is to provide a pre-assembled primary filter, which realizes the change of the overall structure of the primary filter by connecting the structural members at two different parts of the primary filter to meet the assembly requirements of the limited space.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A pre-assembled primary filter includes a filter screen having a filtering section and an interface section, a support member provided on the filtering section, and an interface member provided on the interface section. The interface member and the support member are both located on the same side of the filter screen; the interface member is provided with a first connecting member; the support member has a second connecting member; after the first connecting member connects the second connecting member, the interface section is perpendicular to the filtering section.

[0005] Further, the first connecting member is a columnar structure body, and its central axis is perpendicular to the surface of the interface section; the second connecting member is a structure body having a clamping hole, and the central axis of the clamping hole is parallel to the surface of the filtering section.

[0006] Further, the first connecting member is a structure body having a clamping hole, and the central axis of the clamping hole is parallel to the surface of the interface section. The second connecting member is a columnar structure body, and its central axis is perpendicular to the surface of the filtering section

[0007] Further, the columnar structure body has a main column body for clamping and a rib-shaped body located on one side of the main column body for strengthening.

[0008] Further, the main column body has a positioning step.

[0009] Further, the interface member has a connecting portion connecting the interface section, and several notches are provided on the parts of the connecting portion located above and below the filter screen respectively, so that each part forms several tooth portions. The tooth portions and notches of the upper and lower parts are staggered with each other, and the tooth portions of one part can cover the notches of the other part.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] 1) The present invention utilizes the connection relationship between two structural members on the primary filter to reduce the overall size of the entire primary filter without changing the filter mesh size, which not only ensures the filtration efficiency and dust capacity of the primary filter but also meets the assembly requirements of limited spaces.

[0012] 2) The connection part of the interface part in the present invention is designed with alternating slots, which can increase the contact area between the solidified particle flow material and the filter mesh, avoid virtual connection, and improve the connection strength between the interface part and the filter mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional structural view of a preferred embodiment of the present invention before pre-assembly;

[0014] Figure 2 is a three-dimensional structural view of a preferred embodiment of the present invention after pre-assembly;

[0015] Figure 3 is Figure 2 a partial enlarged view of part A in

[0016] Figure 4 is a top view of a preferred embodiment of the present invention after pre-assembly;

[0017] Figure 5 is a side view of a preferred embodiment of the present invention after pre-assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] As Figures 1 to 5 shown, the present invention discloses a pre-assembled primary filter, which includes a filter mesh 1 having a filtering section 1.2 and an interface section 1.1, a support member 3 disposed in the filtering section 1.2, and an interface member 2 disposed in the interface section 1.1. The filter mesh 1 is made of a mesh cloth through cutting and welding processes in sequence, and weld seams 1.3 are formed at the edges to connect the edges. The support member 3 and the interface member 2 are both injection-molded parts and are disposed on the filter mesh 1 by injection molding.

[0020] The interface part 2 and the support part 3 are both located on the same side of the filter net 1. The interface part 2 is connected to the fuel pump, and fuel enters the filter net 1 from the inlet of the interface part 2 and then passes through the filter and enters the subsequent process. The support part 3 is used to support the filter net 1 to prevent it from expanding excessively during filtration.

[0021] The interface part 2 is provided with a first connecting part 4; the support part 3 has a second connecting part 5. The first connecting part 4 can be connected to the second connecting part 5. Before the two are connected, the filter net 1 is in an unfolded state, that is, the interface section 1.1 and the filtering section 1.2 are in the same plane. At this time, the length of the primary filter is relatively large and it is not convenient for installation. After the two are connected, the interface section 1.1 and the filtering section 1.2 are in a perpendicular state. It can be seen that the overall length dimension of the primary filter at this time is reduced, and it can meet the installation requirements of a smaller installation space.

[0022] As a preferred example, the first connecting part 4 is a columnar structure body, the central axis of which is perpendicular to the surface of the interface section 1.1, and the first connecting part 4 is integrally injection-molded with the interface part 2. The second connecting part 5 is a structure body with a clamping hole 5.1, and the second connecting part 5 is integrally injection-molded with the support part 3. The central axis of the clamping hole 5.1 is parallel to the surface of the filtering section 1.2.

[0023] Obviously, the clamping structures of the first connecting part 4 and the second connecting part 5 can also be interchanged, that is, the first connecting part 4 is a structure body with a clamping hole 5.1, and the central axis of the clamping hole 5.1 is parallel to the surface of the interface section 1.1. The second connecting part 5 is a columnar structure body, the central axis of which is perpendicular to the surface of the filtering section 1.2.

[0024] As a preferred example, the columnar structure body has a main column body 4.1 that plays a clamping role and a rib-like body 4.2 that is located on one side of the main column body and plays a strengthening role. The bottom of the main column body 4.1 and the bottom of the rib-like body 4.2 are integrally connected to the connecting part 2.1 of the interface part 2 through a connecting rib.

[0025] As a preferred example, the main column body 4.1 has a positioning step 4.3. After the first connecting part 4 and the second connecting part 5 are connected, the connection position of the two is positioned through the positioning step 4.3. The diameter of the columnar structure body gradually increases from the top to the bottom, so that it forms a conical structure. In this way, when the first connecting part 4 and the second connecting part 5 are connected, a connection can be formed at the part with a smaller diameter, and then a stable clamping state can be achieved through the positioning step 4.3.

[0026] As a preferred example, the interface member 2 has a connecting portion 2.1 for connecting the interface section 1.1. A plurality of notches 2.2 are provided in the portions of the connecting portion 2.1 respectively above and below the filter net 1, so that a plurality of tooth portions 2.3 are respectively formed in each portion. The tooth portions 2.3 and the notches 2.2 in the upper and lower portions are staggered with each other, and the tooth portions 2.3 of one portion can cover the notches 2.2 of the other portion. This structure can reduce the volume of the cavity, enable the particle flow material to better contact the filter net 1 before curing, avoid virtual connection, and thus improve the bonding strength after curing.

[0027] Those not detailed in the present invention are all well-known technologies to those skilled in the art.

[0028] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A pre-assembled primary filter, comprising a filter screen having a filter section and an interface section, a support member arranged on the filter section and an interface member arranged on the interface section, wherein the interface member and the support member are both located on the same side of the filter screen; characterized in that: The interface member is provided with a first connecting member; the support member has a second connecting member; after the first connecting member is connected to the second connecting member, the interface section is perpendicular to the filtering section.

2. A pre-assembled primary filter according to claim 1, characterized in that: The first connecting member is a columnar structure, the central axis of which is perpendicular to the surface of the interface segment; the second connecting member is a structure having a snap-fit ​​hole, the central axis of which is parallel to the surface of the filter segment.

3. A pre-assembled primary filter according to claim 1, characterized in that: The first connecting member is a structure having a snap-in hole, the central axis of which is parallel to the surface of the interface segment; the second connecting member is a columnar structure, the central axis of which is perpendicular to the surface of the filter segment.

4. A pre-assembled primary filter according to claim 2 or 3, characterized in that: The columnar structure comprises a main column body which plays a clamping role and a rib-shaped body which is located at one side of the main column body and plays a reinforcing role.

5. A pre-assembled primary filter according to claim 4, characterized in that: The main column has a positioning step.

6. A pre-assembled primary filter according to claim 1, characterized in that: The interface member has a connecting portion connected to the interface section, and the portions of the connecting portion located above and below the filter net are provided with a plurality of notches so that each portion forms a plurality of teeth, the teeth and notches of the upper and lower portions are staggered, and the teeth of one portion can cover the notches of the other portion.

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