Primary air filter

Abstract

The utility model relates to the technical field of filters, in particular to a primary air filter which comprises a filter cartridge, and a filter assembly is arranged in the filter cartridge. The filter assembly comprises a pair of protective nets arranged in the filter cartridge, a folding filter element is fixedly connected between the protective nets, the folding filter element is of a V-shaped structure formed by folding a plurality of layers of ceramic fiber materials, and a pair of reinforcing ribs are arranged on the inner side of the folding filter element in a penetrating mode. According to the utility model, through the arrangement of the folding filter element, the filtering area is increased, the filtering efficiency is improved, pollutants such as large-particle dust and impurities in air can be effectively intercepted, and through the arrangement of the reinforcing ribs, the structural strength of the filter element can be enhanced, the filter element is prevented from being deformed under the impact of airflow, and the stability of the filtering effect is ensured; and water can be used for washing for many times, and materials are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technology field especially relates to a primary efficiency air filter. BACKGROUND

[0002] Air filter is generally constituted by filter layer and frame, and air filter can be divided into primary efficiency, medium efficiency and high efficiency and multiple grades according to filtering effect. The primary efficiency air filter is mainly used for trapping the particle dust and various suspensions with the diameter of 5 to 10 microns. The air filter is the equipment that traps dust from gas-solid two-phase flow through the action of porous filter material, and part of the filter adopts single-layer polyester fiber filter material.

[0003] In view of the related technology in the above, the defects of the existing filter are that the filter core in the existing filter can intercept 80% of the ≥5 μm particulate matter, but the filter material is easy to deform, leading to sealing failure. Therefore, the utility model provides a primary efficiency air filter. UTILITY MODEL CONTENT

[0004] The purpose of the present application is to provide a primary efficiency air filter to solve the problem that the filter core in the existing filter can intercept 80% of the ≥5 μm particulate matter, but the filter material is easy to deform, leading to sealing failure.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a primary efficiency air filter, comprising a filter cartridge, a filter assembly is arranged in the filter cartridge; the filter assembly comprises a pair of protective nets arranged in the interior of the filter cartridge, a folding type filter core is fixedly connected between the pair of protective nets, the folding type filter core is folded into a V-shaped structure by a plurality of layers of ceramic fiber material, and a pair of reinforcing ribs are arranged on the inner side of the folding type filter core.

[0006] Preferably, the outer side of the protective net is fixedly connected with a pair of fixed blocks, the outer side of the fixed block is provided with a bolt, and the inner wall side of the fixed block and the inner wall side of the filter cartridge are both provided with threaded holes matched with the bolt.

[0007] Preferably, a groove is arranged at one end of the filter cartridge, and a sealing gasket is arranged on the inner wall side of the groove. The sealing gasket is made of EPDM rubber.

[0008] Preferably, the reinforcing rib is made of PET plastic.

[0009] Preferably, a differential pressure alarm is arranged in the filter cartridge, and the filter cartridge is made of aluminum alloy.

[0010] Preferably, a plurality of hanging ears are arranged on the outer side of the filter cartridge, and a threaded groove is arranged on the inner side of the hanging ear.

[0011] In summary, the technical effects and advantages of the utility model are:

[0012] The utility model discloses, through the setting of folding filter core, increased the filtration area, improved the filtration efficiency, can effectively intercept the dust, impurity and other pollutants of larger particle in air, and through the setting of reinforcing rib, can strengthen the structural strength of filter core, prevent filter core from deforming under the impact of airflow, ensure the stability of filtration effect, and can support multiple use water washing, save material. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiment of the present application or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description is only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0014] Figure 1 It is the first perspective axial side structure schematic diagram of the utility model;

[0015] Figure 2 It is the second perspective axial side structure schematic diagram of the utility model;

[0016] Figure 3 It is the structure schematic diagram of reinforcing rib in the utility model;

[0017] Figure 4 It is Figure 1 The enlarged structure schematic diagram of A of

[0018] In the drawing: 1, filter drum;2, ear;3, protective net;4, sealing washer;5, folding filter core;6, reinforcing rib;7, fixed block;8, screw hole;9, bolt. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0020] In the description of the utility model, it is necessary to explain, unless another definite provision and limitation, the term "installation", "set with", "sleeve set / interface", "connection" and the like, should do broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected; can be mechanical connection, also can be electrical connection; can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the intercommunication. For ordinary skilled person in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.

[0021] Embodiment: reference Figures 1-4 The utility model provides an initial effect air filter, including filter cartridge 1, filter cartridge 1 is made of aluminium alloy, has good strength and corrosion resistance, can effectively protect internal component, simultaneously aluminium alloy material weight is lighter, is convenient for installation and carrying, be provided with filter assembly in filter cartridge 1, filter assembly includes a pair of setting in the protection net 3 of filter cartridge 1 inside, protection net 3 is used for protecting folding filter element 5, prevents its from being damaged by external force in the use process, simultaneously to the airflow plays the preliminary flow guiding effect, makes the airflow more evenly through filter element, a pair of protection net 3 is fixedly connected with folding filter element 5 between, folding filter element 5 is folded into V type structure by multiple layers of ceramic fiber material, this structure increases the filtration area, improves the filtration efficiency, can effectively intercept the dust, impurity and other pollutants of relatively large particle in air, multiple layers of ceramic fiber material has good filtration performance and high temperature resistance, can work stably under a variety of environments, the inside of folding filter element 5 is provided with a pair of reinforcing ribs 6 and penetrates, reinforcing rib 6 is PET plastic, can strengthen the structural strength of filter element, prevents filter element from deforming under the airflow impact, ensures the stability of filtration effect, the outside of protection net 3 is fixedly connected with a pair of fixed blocks 7, fixed block 7 is used for connecting protection net 3 and filter cartridge 1, guarantees the relative position of protection net 3 and fixed between filter cartridge 1, the outside of fixed block 7 is provided with bolt 9, the inner wall side surface of fixed block 7 and filter cartridge 1 is all set up with the screw hole 8 of adaptation with bolt 9, through the cooperation of bolt 9 and screw hole 8, realizes the detachable connection of protection net 3 and filter cartridge 1, makes installation, disassembly and maintenance to filter assembly is convenient, the recess is seted up in one end of filter cartridge 1, the inner wall side surface of recess is provided with sealing washer 4, sealing washer 4 is EPDM rubber, has good elasticity and sealing property, can effectively prevent the air that has not been filtered from leaking from the connecting place, guarantees filtration effect, be provided with pressure difference alarm in filter cartridge 1, pressure difference alarm can monitor the pressure difference of filter before and after in real time, when filter element is blocked and leads to pressure difference and exceeds the set value, timely sends out alarm signal, prompts staff to need to clean or replace filter element of filter, avoids the influence of filter element excessive blockage on filtration efficiency and ventilation effect, the outside of filter cartridge 1 is provided with a plurality of hanger ears 2, the inside of hanger ear 2 is set up with the thread groove, hanger ear 2 is used for fixing installation filter on ventilation duct or other equipment, through the cooperation of thread groove and connecting piece such as bolt, realizes the stable installation of filter.

[0022] The utility model discloses a working principle: when air flows through the folding filter core channel, large particle is intercepted gradually by multilayer fiber, and the protective net prevents folding filter core from deforming, and differential pressure alarm prompts cleaning when pressure difference exceeds the set value, supports multiple use water washing, and the setting of fixed block 7 is convenient for the quick disassembly of folding filter core 5 and protective net 3.

[0023] Finally, it should be pointed out that: the above only for the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A primary air filter, comprising a filter cartridge (1), characterized in that: The filter cartridge (1) is equipped with a filter assembly; The filter assembly includes a pair of protective nets (3) disposed inside the filter cartridge (1), and a pleated filter element (5) is fixedly connected between the pair of protective nets (3). The pleated filter element (5) is made of multiple layers of ceramic fiber material folded into a V-shaped structure, and a pair of reinforcing ribs (6) are provided through the inner side of the pleated filter element (5).

2. A primary air filter according to claim 1, characterized in that: A pair of fixing blocks (7) are fixedly connected to the outer side of the protective net (3). Bolts (9) are provided on the outer side of the fixing blocks (7). Threaded holes (8) that are compatible with the bolts (9) are opened on the inner wall side of both the fixing blocks (7) and the filter cylinder (1).

3. A primary air filter according to claim 2, characterized in that: The filter cartridge (1) has a groove at one end, and a sealing gasket (4) is provided on the inner wall side of the groove. The sealing gasket (4) is made of EPDM rubber.

4. A primary air filter according to claim 1, characterized in that: The reinforcing rib (6) is made of PET plastic.

5. A primary air filter according to claim 4, characterized in that: The filter cartridge (1) is equipped with a differential pressure alarm and is made of aluminum alloy.

6. A primary air filter according to claim 4, characterized in that: The filter cartridge (1) is provided with a plurality of hanging ears (2) on the outside, and the inner side of the hanging ears (2) is provided with threaded grooves.

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