Compressed air precision filter element

Abstract

The utility model relates to the technical field of filter elements, and discloses a compressed air precision filter element which comprises an outer filter layer, an inner filter layer, a metal fiber sintering felt layer and a wind disturbing piece, the inner filter layer is detachably arranged in the outer filter layer, the outer filter layer and the inner filter layer can rotate relatively, the metal fiber sintering felt layer is arranged in the inner filter layer, and the wind disturbing piece is arranged in the metal fiber sintering felt layer. A glass fiber layer is arranged on the lower end face of the metal fiber sintering felt layer, and the wind disturbing piece is used for dispersing and disturbing the flow direction of compressed air. The air flow can be combed and shunted by the aid of the first air disturbing plates and the second air disturbing plates, originally concentrated and powerful compressed air is divided into a plurality of air flow branches which are relatively independent and more controllable in flow speed, impact force of the air flow is dispersed, excessive accumulation of local pressure is avoided, and the air flow distribution effect is improved. A foundation is built for subsequent pressure reduction and stable filtration, and a loose and stable air pressure environment is created for the subsequent fine filtration process.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter core technical field, especially point to a compressed air precision filter core. BACKGROUND

[0002] The compressed air precision filter core is a component specially designed for purifying compressed air systems to remove particulate matter, oil mist, moisture and other impurities therein. These filter cores are crucial for ensuring the quality of compressed air, especially in applications with strict requirements for air quality, such as food processing, pharmaceuticals, electronics manufacturing, spraying, etc.

[0003] Currently, the compressed air precision filter core usually faces strong compressed air. Generally, in the air supply system of various factory workshops and large mechanical equipment, compressed air is usually delivered in a centralized mode and is strongly pushed into the internal space of the filter core. The resulting strong pressure difference is extremely unevenly distributed, and the local area of the filter core may instantaneously bear forces far exceeding the designed bearing limit, which can easily cause local structural distortion and concave deformation, seriously affecting the precision and overall effect of filtration. SUMMARY

[0004] The utility model provides a compressed air precision filter core to solve the problem that the existing compressed air is delivered into the internal space of the filter core in a centralized mode, and the filter core is prone to local structural distortion and concave deformation.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a compressed air precision filter core, comprising:

[0006] An outer filter layer and an inner filter layer, the inner filter layer can be detachably arranged in the outer filter layer, and the outer filter layer and the inner filter layer can rotate relative to each other;

[0007] A metal fiber sintered felt layer, the metal fiber sintered felt layer is arranged inside the inner filter layer, and the lower end surface of the metal fiber sintered felt layer is provided with a glass fiber layer, and the metal fiber sintered felt layer and the glass fiber layer are both perforated layers;

[0008] A wind disturbing piece, the wind disturbing piece is arranged inside the inner filter layer, and the wind disturbing piece is used to disperse and disturb the flow direction of compressed air.

[0009] Preferably, the outer wall of the inner filter layer is fixed with an embedded block at the lower end, the inner wall of the outer filter layer is vertically provided with an embedded groove, and the inner wall of the outer filter layer and below the embedded groove is provided with an annular groove.

[0010] Preferably, the upper and lower ends of the embedded block are both fixed with elastic protrusions.

[0011] Preferably, the air disturbance member comprises a plurality of first air disturbance plates and second air disturbance plates, the second air disturbance plates are arranged below the glass fiber layer, and the first air disturbance plates are arranged above the metal fiber sintered felt layer.

[0012] Preferably, the first air disturbance plates and the second air disturbance plates are both composed of staggered first air guide portions and second air guide portions, and the inclination angle of the first air guide portions is smaller than the inclination angle of the second air guide portions.

[0013] Preferably, the top end of the first air disturbance plate is connected with a metal filter plate, and the metal filter plate is fixed to the inner wall of the inner filter layer.

[0014] Preferably, the upper end surface of the metal fiber sintered felt layer is fixed with a moisture absorption layer.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are as follows:

[0016] (1) By arranging the air disturbance member, the plurality of arranged first air disturbance plates and second air disturbance plates can comb and distribute the airflow, and according to the specific angle, spacing and geometric shape of the first air guide portions and the second air guide portions, the originally concentrated and strong compressed air is divided into a plurality of relatively independent airflow branches with more controllable flow rate, the impact force of the airflow is dispersed, the local pressure is prevented from excessively accumulating, the foundation for subsequent pressure reduction and stable filtration is laid, and a relaxed and stable air pressure environment is created for the subsequent fine filtration process.

[0017] (2) By utilizing the excellent strength and toughness of the metal fiber sintered felt layer, the structure can still be kept intact in the face of higher fluid pressure or external mechanical impact, stable support is provided for the filtration process, the high strength of the glass fiber can further improve the stability of the overall filtration. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating creative labor.

[0019] Figure 1 It is a three-dimensional schematic view of the utility model;

[0020] Figure 2 It is a sectional structure schematic view of the utility model;

[0021] Figure 3 It is a structure schematic view of the first air disturbance plate, the metal fiber sintered felt layer and the second air disturbance plate of the utility model.

[0022] Figure 4 It is the sectional view structure schematic view of the outer filter layer and the inner filter layer of the utility model;

[0023] Figure 5 It is the A place enlarged view in the utility model Figure 4 ;

[0024] In the drawing: 1, outer filter layer;2, inner filter layer;3, metal filter plate;4, first wind disturbing plate;5, moisture absorbing layer;6, metal fiber sintered felt layer;7, glass fiber layer;8, second wind disturbing plate;9, annular groove;10, first air guide part;11, second air guide part;12, slot;13, embedded block;14, elastic protrusion. Specific implementation

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described below with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the 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.

[0026] As Figures 1-5 shown, a compressed air precision filter element, comprising outer filter layer 1, inner filter layer 2, metal fiber sintered felt layer 6 and wind disturbing piece, inner filter layer 2 can be set in outer filter layer 1, and outer filter layer 1 and inner filter layer 2 can rotate relative to each other, metal fiber sintered felt layer 6 is arranged inside inner filter layer 2, the upper end surface of metal fiber sintered felt layer 6 is fixed with moisture absorbing layer 5, moisture absorbing layer 5 is a composite layer of moisture absorbing cotton and moisture absorbing fiber, which can effectively absorb water vapor in air, and the lower end surface of metal fiber sintered felt layer 6 is provided with glass fiber layer 7, metal fiber sintered felt layer 6 has excellent strength and toughness, even if facing higher fluid pressure or external mechanical impact, it can still maintain the structure of integrity, providing stable support for the filtering process, glass fiber has high strength, which can further improve the stability of the overall filtration, metal fiber sintered felt layer 6 and glass fiber layer 7 are both leak hole layers, the leak hole layer is a layer with a plurality of leak holes, for the passage of gas, wind disturbing piece is arranged inside inner filter layer 2, and the wind disturbing piece is used for dispersing and disturbing the flow direction of compressed air.

[0027] Among them, refer to Figure 1 and Figures 4-5As shown, the lower end of the outer wall of the inner filter layer 2 is fixed with an embedded block 13, the upper and lower ends of the embedded block 13 are fixed with elastic protrusions 14, the elastic protrusions 14 play a certain pressure resistance role, and the relative rotation of the inner filter layer 2 and the outer filter layer 1 is limited, the inner wall of the outer filter layer 1 is vertically provided with an embedded groove 12, and the inner wall of the outer filter layer 1 and below the embedded groove 12 is provided with an annular groove 9, when the inner filter layer 2 is installed in the outer filter layer 1, the embedded block 13 can be aligned with the embedded groove 12 and put in, after being put in place, the outer filter layer 1 is rotated, the embedded block 13 can be embedded into the annular groove 9, that is, the outer filter layer 1 can be avoided from separating from the inner filter layer 2, wherein, by rotating the inner filter layer 2, the position of the outer filter layer 1 can be adjusted, and the filter hole coincidence degree of the outer filter layer 1 and the inner filter layer 2 is changed.

[0028] Referring to Figures 2-3 As shown, the wind disturbing member includes a plurality of first wind disturbing plates 4 and second wind disturbing plates 8, the top end of the first wind disturbing plate 4 is connected with a metal filter plate 3, the metal filter plate 3 is fixed on the inner wall of the inner filter layer 2, the second wind disturbing plate 8 is arranged below the glass fiber layer 7, the first wind disturbing plate 4 is arranged above the metal fiber sintered felt layer 6, the first wind disturbing plate 4 and the second wind disturbing plate 8 are both staggered by the inclined first air guide part 10 and the second air guide part 11, and the inclination angle of the first air guide part 10 is smaller than that of the second air guide part 11.

[0029] In summary, after the compressed air passes downward from the metal filter plate 3, part of it can pass through the moisture absorbing layer 5 for water absorption, a layer of moisture absorbing layer 5 can be arranged below the metal filter plate 3, so that the compressed air passing through the metal filter plate 3 can be subjected to moisture absorbing operation through the moisture absorbing layer 5, and the plurality of arranged first wind disturbing plates 4 and second wind disturbing plates 8 can comb and distribute the compressed air, according to the specific angle, spacing and geometric shape of the first air guide part 10 and the second air guide part 11, the originally concentrated and strong compressed air is divided into a plurality of relatively independent and flow rate controllable air flow branches, the impact force of the air flow is dispersed, the local pressure is prevented from excessive accumulation, the foundation for subsequent pressure reduction and stable filtration is laid, and a relaxed and stable air pressure environment is created for the subsequent fine filtration process.

[0030] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A compressed air precision filter cartridge, characterized in that, It comprises: An outer filter layer (1) and an inner filter layer (2), which is detachably arranged in the outer filter layer (1), and the outer filter layer (1) and the inner filter layer (2) can rotate relative to each other; A metal fiber sintered felt layer (6) is arranged inside the inner filter layer (2), and the lower end surface of the metal fiber sintered felt layer (6) is provided with a glass fiber layer (7), and the metal fiber sintered felt layer (6) and the glass fiber layer (7) are both leaky layers; A wind disturbing piece is arranged inside the inner filter layer (2), and the wind disturbing piece is used to disperse and disturb the flow direction of compressed air.

2. The compressed air precision filter cartridge of claim 1, wherein: The lower end of the outer wall of the inner filter layer (2) is fixed with an embedded block (13), the inner wall of the outer filter layer (1) is vertically provided with an embedded groove (12), and the inner wall of the outer filter layer (1) below the embedded groove (12) is provided with an annular groove (9).

3. The compressed air precision filter cartridge of claim 2, wherein: The upper and lower ends of the embedded block (13) are both fixed with elastic protrusions (14).

4. The compressed air precision filter cartridge of claim 1, wherein: The wind disturbing piece comprises a plurality of first wind disturbing plates (4) and second wind disturbing plates (8), the second wind disturbing plates (8) are arranged below the glass fiber layer (7), and the first wind disturbing plates (4) are arranged above the metal fiber sintered felt layer (6).

5. The compressed air precision filter cartridge of claim 4, wherein: The first wind disturbing plates (4) and the second wind disturbing plates (8) are both composed of staggered first wind guiding parts (10) and second wind guiding parts (11), and the inclination angle of the first wind guiding part (10) is smaller than that of the second wind guiding part (11).

6. The compressed air precision filter cartridge of claim 4, wherein: The top end of the first wind disturbing plate (4) is connected with a metal filter plate (3), and the metal filter plate (3) is fixed to the inner wall of the inner filter layer (2).

7. The compressed air precision filter element of claim 1, wherein: The upper end surface of the metal fiber sintered felt layer (6) is fixed with a moisture absorbing layer (5).

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