Combined air filter

Abstract

The utility model discloses a combined type air filter, which belongs to the field of air filters and comprises a filter shell, a filter element is placed in the filter shell, a preliminary filtering structure is placed in the filter shell and at the upper end of the filter element, and the preliminary filtering structure is composed of a bottom frame, a top enclosure frame and a conical filter screen. The top enclosure frame and the conical filter screen are both fixedly installed at the upper end of the bottom frame, the conical filter screen is located on the inner side of the top enclosure frame, the preliminary filtering structure is arranged above the filter element of the filter, the preliminary filtering structure can pre-filter air entering the filter shell, and therefore large particles in the air are blocked, and the air can be effectively filtered. According to the filter element of the filter, large particles are effectively prevented from entering the filter element of the filter, accumulation of impurities on the filter element of the filter is slowed down, the burden of the filter element of the filter is reduced, meanwhile, the filter element of the filter can keep a good filtering effect for a long time, and then the replacement frequency of the filter element of the filter is reduced.

Description

Technical Field

[0001] The utility model relates to the field of air filters, in particular to a combined air filter. Background Art

[0002] The automobile air filter is a key component in the intake system of the automobile engine. Its main function is to filter the air entering the engine, remove dust, particles and other impurities in it, so as to ensure that the engine can inhale clean air. The automobile air filter is usually composed of a filter element and a housing. The filter element is the core part of the filter. Its material is mostly paper or fiber material, with high efficiency filtering performance. When the air flows through the filter, the filter element can capture and block impurities in the air, allowing only clean air to pass through and enter the engine. The housing plays the role of protecting the filter element and fixing the installation. It is usually made of metal or plastic, with a sturdy structure and good sealing performance to prevent unfiltered air from bypassing the filter element and directly entering the engine. As the use time increases, the filter element will gradually accumulate impurities and the filtering effect will decrease. Therefore, regular replacement of the filter element is one of the important measures to maintain engine performance. However, frequent replacement of the filter element will cause a certain waste of resources and increase the user's cost of use. Therefore, a combined air filter is needed to solve the above problems. Utility Model Content

[0003] The main purpose of the utility model is to provide a combined air filter, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A combined air filter comprises a filter housing, a filter element is placed in the filter housing, a preliminary filtering structure is placed in the filter housing and on the upper end of the filter element, the preliminary filtering structure is composed of a bottom frame, a top enclosure frame, and a conical filter screen, the top enclosure frame and the conical filter screen are both fixedly mounted on the upper end of the bottom frame, and the conical filter screen is located on the inner side of the top enclosure frame, four supporting springs are symmetrically fixedly mounted on the lower end of the bottom frame, and a contact gasket is fixedly mounted on the lower end of each of the four supporting springs.

[0006] Preferably, an air outlet pipe is fixedly mounted on the side wall of the filter housing, and a placement frame is fixedly mounted on the inner wall of the filter housing and above the air outlet pipe.

[0007] Preferably, a filter cover is installed at the upper end of the filter housing, and the filter cover can be fixedly connected to the filter housing by bolts, and an air intake pipe is fixedly installed on the upper side wall of the filter cover.

[0008] Preferably, the filter element is placed on a placement frame.

[0009] Preferably, the conical filter screen on the preliminary filtering structure is a conical structure with a higher height in the middle and a lower height at the edge, and the bottom frame is placed on the upper end of the filter element.

[0010] Preferably, the four contact gaskets are all in contact with the upper end of the filter element.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] By arranging a preliminary filtering structure above the filter element, the preliminary filtering structure can pre-filter the air entering the filter housing, thereby blocking larger particles in the air, and then effectively blocking large particles from entering the filter element, slowing down the accumulation of impurities on the filter element, reducing the burden on the filter element, and at the same time enabling the filter element to maintain a good filtering effect for a long time, thereby reducing the frequency of filter element replacement, ultimately reducing resource waste, reducing user costs, and also improving the dust filtering effect of the air filter; by supporting the spring on the preliminary filtering structure, the preliminary filtering structure can be lifted up and disassembled, thereby facilitating the cleaning of the preliminary filtering structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a disassembled diagram of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the preliminary filtering structure, the supporting spring and the contact gasket of the utility model;

[0016] Figure 4 For the utility model Figure 3 A magnified view of point A.

[0017] In the figure: 1. filter housing; 2. filter cover; 3. filter element; 4. primary filtering structure; 5. exhaust pipe; 6. placement frame; 7. intake pipe; 8. bottom frame; 9. top enclosure frame; 10. conical filter screen; 11. support spring; 12. contact gasket. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a combined air filter comprises a filter housing 1, a filter element 3 is placed in the filter housing 1, an air outlet pipe 5 is fixedly mounted on the side wall of the filter housing 1, a placement frame 6 is fixedly mounted on the inner wall of the filter housing 1 and above the air outlet pipe 5, a filter cover 2 is mounted on the upper end of the filter housing 1, and the filter cover 2 can be fixedly connected to the filter housing 1 by bolts, an air inlet pipe 7 is fixedly mounted on the upper side wall of the filter cover 2, and the filter element 3 is placed on the placement frame 6.

[0020] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a preliminary filtering structure 4 is placed in the filter housing 1 and at the upper end of the filter element 3. The preliminary filtering structure 4 consists of a bottom frame 8, a top enclosure frame 9, and a conical filter screen 10. The top enclosure frame 9 and the conical filter screen 10 are both fixedly mounted on the upper end of the bottom frame 8, and the conical filter screen 10 is located on the inner side of the top enclosure frame 9. Four supporting springs 11 are symmetrically fixedly mounted on the lower end of the bottom frame 8, and a contact gasket 12 is fixedly mounted on the lower end of the four supporting springs 11. The conical filter screen 10 on the preliminary filtering structure 4 is a conical structure with a higher middle height and a lower edge height. The bottom frame 8 is placed on the upper end of the filter element 3, and the four contact gaskets 12 are in contact with the upper end of the filter element 3. A preliminary filtering structure 4 is arranged above the filter element 3. The preliminary filtering structure 4 can pre-filter the air entering into the filter housing 1, thereby blocking larger particles in the air, and further effectively preventing large particles from entering the filter element 3, slowing down the accumulation of impurities on the filter element 3, reducing the burden on the filter element 3, and at the same time enabling the filter element 3 to maintain a good filtering effect for a long time, thereby reducing the frequency of replacing the filter element 3, ultimately reducing the waste of resources, reducing the user's use cost, and further improving the dust filtering effect of the air filter. By supporting the spring 11 on the preliminary filtering structure 4, the preliminary filtering structure 4 can be lifted up and disassembled, thereby facilitating the cleaning of the preliminary filtering structure 4.

[0021] It should be noted that the utility model is a combined air filter. When in use, air will enter the filter housing 1 through the air inlet pipe 7 on the filter upper cover 2. At this time, the preliminary filtering structure 4 will perform preliminary filtering on the air, thereby blocking larger particles in the air. At this time, the larger particles will roll down the inclined surface of the conical filter screen 10 to the upper end of the bottom frame 8, thereby effectively blocking the large particles in the air from entering the filter element 3, slowing down the accumulation of impurities on the filter element 3, reducing the burden on the filter element 3, and at the same time enabling the filter element 3 to maintain a good filtering effect for a long time, thereby reducing the frequency of replacing the filter element 3, and ultimately reducing resource waste. The user's use cost is reduced and the dust filtering effect of the air filter can be improved. Then, the air preliminarily filtered by the preliminary filtering structure 4 will enter the filter element 3. At this time, the filter element 3 will further filter the air, thereby filtering out smaller dust in the air. Finally, the filtered air will enter the automobile engine through the exhaust pipe 5; when the preliminary filtering structure 4 needs to be cleaned, the filter cover 2 can be removed from the filter housing 1. After the filter cover 2 is removed, the preliminary filtering structure 4 will be lifted up under the elastic force of the support spring 11, and finally the lifted preliminary filtering structure 4 can be taken out from the filter housing 1 for cleaning.

[0022] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A combined air filter, comprising a filter housing (1), wherein a filter element (3) is placed in the filter housing (1), characterized in that: A preliminary filtering structure (4) is placed inside the filter housing (1) and at the upper end of the filter element (3). The preliminary filtering structure (4) is composed of a bottom frame (8), a top enclosure frame (9), and a conical filter screen (10). The top enclosure frame (9) and the conical filter screen (10) are both fixedly mounted on the upper end of the bottom frame (8), and the conical filter screen (10) is located on the inner side of the top enclosure frame (9). Four supporting springs (11) are symmetrically fixedly mounted on the lower end of the bottom frame (8), and a contact gasket (12) is fixedly mounted on the lower end of each of the four supporting springs (11).

2. A combined air filter according to claim 1, characterized in that: An air outlet pipe (5) is fixedly mounted on the side wall of the filter housing (1), and a placement frame (6) is fixedly mounted on the inner wall of the filter housing (1) and above the air outlet pipe (5).

3. A combined air filter according to claim 2, characterized in that: A filter upper cover (2) is installed at the upper end of the filter housing (1), and the filter upper cover (2) can be fixedly connected to the filter housing (1) by bolts, and an air intake pipe (7) is fixedly installed on the upper side wall of the filter upper cover (2).

4. A combined air filter according to claim 3, characterized in that: The filter element (3) is placed on a placement frame (6).

5. A combined air filter according to claim 4, characterized in that: The conical filter screen (10) on the preliminary filtering structure (4) is a conical structure with a higher middle height and a lower edge height, and the bottom frame (8) is placed on the upper end of the filter element (3).

6. A combined air filter according to claim 5, characterized in that: The four contact gaskets (12) are all in contact with the upper end of the filter element (3).

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