CN110873007A

CN110873007A - Air inlet system for filtering air

Info

Publication number: CN110873007A
Application number: CN201811010901.3A
Authority: CN
Inventors: 黄方兴
Original assignee: Mann and Hummel Filter Shanghai Co Ltd
Current assignee: Mann and Hummel Filter Shanghai Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2020-03-10

Abstract

The invention relates to an air inlet system for filtering air, which comprises a metal lower cover (3), a metal shell (5), a metal air inlet pipe (8) and a plastic air outlet pipe (7), wherein the metal lower cover (3) and the metal shell (5) are connected through a clamp spring (4), the metal air inlet pipe (8) is arranged on the side wall of the metal shell (5), and the plastic air outlet pipe (7) is arranged on the metal shell (5). Compared with the prior art, the invention has the advantages of high strength, flexible use, low cost and the like.

Description

Air inlet system for filtering air

Technical Field

The present invention relates to air filters, and more particularly, to an air intake system for filtering air.

Background

At present, many places need to use an air filter, for example, an air filter installed in an engine compartment, which is mainly used for filtering air sucked into an engine to protect a cylinder, a piston ring and the like of the engine from abrasion of abrasive materials and abrasive particles, so that the engine can obtain an optimal air-fuel ratio mixture under different working conditions, the dynamic property and the economical efficiency of the engine are improved, and exhaust pollution is reduced. On the other hand, since the housing for filtering air in the construction machine requires a small amount of air, it is manufactured by using a metal steel plate for cost saving. In order to meet the performance requirements of customers, the plastic is required to be formed by injection molding.

Because of the large size of such housings, the use of injection molds requires a high investment in mold cost. And once the customer needs to change the money on the basis, only the version with different angles of the air inlet and the air outlet is needed, the customer requirements can be met only by newly opening the mold, and the flexibility is low.

The metal shell has the defects of complex processing, large tolerance range of product size, large tolerance range of an air outlet, incapability of meeting the assembly requirements of customers and the like.

Disclosure of Invention

The present invention is directed to overcoming the above-mentioned disadvantages of the prior art and providing an air intake system for filtering air that is strong, flexible and inexpensive.

The purpose of the invention can be realized by the following technical scheme: the utility model provides an air intake system for filtered air, its characterized in that includes metal lower cover, metal casing, metal intake pipe, plastics outlet duct, metal lower cover and metal casing pass through the jump ring and connect, the metal intake pipe install at the metal casing lateral wall, the plastics outlet duct install on metal casing.

The plastic air outlet pipe can be rotatably connected to the metal shell and is positioned and fixed through rivets.

The metal casing upper end be equipped with the arch, plastics outlet duct lower extreme be equipped with corresponding recess, the arch insert in the recess, and can rotate to the angle position of setting for in the recess, rethread fix with rivet can adjust the angle of plastics outlet duct and metal casing in a flexible way.

The metal casing on protruding in the middle of be equipped with 1 ~ 2 mm's the groove of letting back, protruding elasticity that utilizes the metal act on and to letting back in the groove to with the recess chucking in the in-process of inserting the recess.

The corresponding positions of the bulges and the grooves are provided with a plurality of positioning holes, and when the bulges and the grooves rotate to a set angle, the bulges and the grooves are fixed by rivets penetrating through the corresponding positioning holes.

The metal lower cover is connected with a dust exhaust valve through a metal pipe.

The metal shell is internally provided with a filter element.

The shell part adopts a metal shell, and only the air outlet pipe is designed by plastic, so that the cost of the die is reduced. The angles of the plastic air outlet and the air inlet pipe on the metal shell can be flexibly adjusted. A groove is designed on the plastic air outlet pipe, and one side of the metal shell is pressed with a rib (namely a bulge) which is inwards concave. The metal shell is assembled in the groove of the plastic air outlet pipe, so that the metal shell can play a role in sealing and can not easily fall off from the plastic air outlet pipe. In order to increase the strength of the connection, the rivet is used for fixing more reliably.

Compared with the prior art, the invention has the following beneficial effects:

1. the strength is high: the metal shell is less prone to damage than the plastic shell;

2. flexibility: the angles of the air inlets and the air outlets can be flexibly changed according to the requirements of customers;

3. the cost investment is low: if the whole shell is a plastic piece, the development difficulty of the mold is high, and the cost of the mold is high. The plastic part only needs to be provided with the air port part, so that the mold is low in cost.

Drawings

FIG. 1 is a schematic view of an air filtration assembly of the present invention;

FIG. 2 is a schematic view of the connection between plastic and metal components of the air filtration assembly of the present invention.

The reference numbers in the figures indicate:

1. dust exhausting valve, 2, metal pipe, 3, metal lower cover, 4, snap spring, 5, metal shell, 6, rivet, 7, plastic air outlet, 8, metal air inlet pipe.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

Example 1

As shown in fig. 1, an air intake system for filtering air comprises a metal lower cover 3, a metal shell 5, a metal air intake pipe 8 and a plastic air outlet pipe 7, wherein the metal lower cover 3 and the metal shell 5 are connected through a clamp spring 4, the metal air intake pipe 8 is installed on the side wall of the metal shell 5, and the plastic air outlet pipe 7 is installed on the metal shell 5.

The plastic air outlet pipe 7 is rotatably connected to the metal shell 5 and is positioned and fixed through a rivet 6. The upper end of the metal shell 5 is provided with a protrusion 51, the lower end of the plastic outlet pipe 7 is provided with a corresponding groove 71, the protrusion 51 is inserted into the groove 71 and can rotate to a set angle position in the groove 71, and then the plastic outlet pipe and the metal shell can be flexibly adjusted through fixing by a rivet 6. The middle of the bulge 51 on the metal shell 5 is provided with a 1-2 mm yielding groove 52, and the bulge 51 is yielding to the yielding groove 52 in the process of inserting into the groove 71 by utilizing the elastic action of metal and is clamped with the groove 71. The corresponding positions of the bulge 51 and the groove 71 are provided with a plurality of positioning holes, and when the bulge 51 and the groove are rotated to a set angle, the bulge is fixed through the corresponding positioning holes by the rivets 6. As shown in fig. 2.

The metal lower cover 3 is connected with a dust exhaust valve 1 through a metal pipe 2.

A filter element is arranged in the metal shell 5.

Claims

1. The utility model provides an air intake system for filtered air, its characterized in that includes metal lower cover (3), metal casing (5), metal intake pipe (8), plastics outlet duct (7), metal lower cover (3) and metal casing (5) connect through jump ring (4), metal intake pipe (8) install at metal casing (5) lateral wall, plastics outlet duct (7) install on metal casing (5).

2. An air inlet system for filtering air according to claim 1, characterized in that the plastic outlet pipe (7) is rotatably connected to the metal housing (5) and is fixed in place by rivets (6).

3. The air inlet system for filtering air according to claim 1 or 2, wherein a protrusion (51) is arranged at the upper end of the metal shell (5), a corresponding groove (71) is arranged at the lower end of the plastic air outlet pipe (7), and the protrusion (51) is inserted into the groove (71), can rotate in the groove (71) to a set angle position, and is fixed by a rivet (6).

4. The air inlet system for filtering air according to claim 3, wherein a relief groove (52) with a thickness of 1-2 mm is formed in the middle of the protrusion (51) of the metal shell (5), and the protrusion (51) is relieved into the relief groove (52) during the process of being inserted into the groove (71) by the elastic action of metal and is clamped with the groove (71).

5. The air intake system for filtering air according to claim 3, wherein the protrusions (51) and the grooves (71) are provided with a plurality of positioning holes at corresponding positions, and when the protrusions and the grooves are rotated to a set angle, the protrusions and the grooves are fixed by passing the rivets (6) through the corresponding positioning holes.

6. An air inlet system for filtering air according to claim 1, characterized in that the metal lower cover (3) is connected to a dust exhaust valve (1) through a metal pipe (2).

7. An air inlet system for filtering air according to claim 1, characterized in that the metal casing (5) is provided with a filter element.