A glass fiber filter element for oil mist purification

Abstract

The present invention belongs to the technical field of environmentally friendly air purification and discloses a glass fiber filter element for oil mist purification. The element comprises a frame and a composite layer; the composite layer is composed of several aluminum partitions and multiple glass fiber filter layers; the multiple glass fiber filter layers have a continuous S-shaped curved structure, and aluminum partitions are provided within the semi-enclosed structural space within the S-shaped curved structure of the multiple glass fiber filter layers; and a frame is provided around the outer periphery of the composite layer. The frame can be of a flat sealing type, a knife-edge embedded type, or a liquid tank sealing type, depending on the sealing form. The filter element has the advantages of low operating resistance, high purification efficiency, and a long service life.

Description

Technical Field

[0001] The invention belongs to the technical field of environmentally friendly air purification, and relates to a glass fiber filter core for oil mist purification. Background Art

[0002] Glass fiber, a filter material with a rational structure and excellent performance, is currently widely used in industrial filtration and flue gas purification. However, existing glass fiber filter core products on the market are either glass fiber filter paper, which has high purification efficiency but high resistance and a short lifespan, or coarse and medium-efficiency plate filters, which have low resistance and low purification efficiency. Single-layer glass fiber materials for oil mist purification cannot achieve the required combination of purification effectiveness and service life. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a glass fiber filter core suitable for oil mist purification in workshops and factories, which has the advantages of low operating resistance, high purification efficiency and long service life.

[0004] The above-mentioned purpose of the present invention is achieved through the following technical solutions: a glass fiber filter core for oil mist purification; including a frame and a composite layer; the composite layer is composed of several aluminum partitions and multiple layers of glass fiber filter layers; the multiple layers of glass fiber filter layers are continuous S-shaped curved structures, and aluminum partitions are arranged in the semi-closed structural space within the S-shaped curved structure of the multiple layers of glass fiber filter layers; a frame is arranged around the outside of the composite layer.

[0005] The frame can be any one of a flat sealing type, a knife-edge embedded type, and a liquid tank sealing type according to different sealing forms;

[0006] The aluminum partition is a corrugated pleated structure with a pleat depth of 3 to 6 mm;

[0007] The multi-layer glass fiber filter layer is a composite of non-woven fabric and three layers of glass fiber products with different structures treated with a modifier. The multi-layer glass fiber filter layer is specifically composed of an air inlet end non-woven fabric, glass fiber cotton a, glass fiber mesh fabric, glass fiber cotton b, and an air outlet end non-woven fabric layered in this order.

[0008] Furthermore, the glass fiber cotton a and the glass fiber mesh fabric are compounded by needle punching;

[0009] Furthermore, the modifier is a surface treatment agent that can change the wettability of the fiber surface, and the modifier can be a mixed solution of heptadecafluorodecyltriethoxysilane and isopropyl alcohol;

[0010] Furthermore, the glass fiber wool a is made by needle-punching chopped glass fiber, and the diameter of the chopped fiber is 10 to 20 μm and the length is 20 to 50 mm;

[0011] Furthermore, the glass fiber mesh fabric is woven from glass fiber yarns, the diameter of the glass fiber yarns is 10 to 20 μm, and the mesh side length is 5 to 15 mm;

[0012] Furthermore, the glass fiber cotton b is formed by plying glass fibers, and the glass fibers have a diameter of 3 to 10 μm and a length of 50 to 100 mm.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The present invention proposes a glass fiber filter core for oil mist purification. The filter core is made of a composite of an aluminum partition and multiple glass fiber filter layers. By using a combination of multiple glass fiber cotton layers with different fiber diameters and different thicknesses, the purpose of efficient and long-lasting oil mist filtration is achieved. The aluminum partition supports the glass fiber filter cotton, establishes an air flow channel, and increases the filtration area. The non-woven fabric at the air inlet end blocks large particles of foreign matter and metal chips, and protects the multiple layers of glass fiber filter cotton. The glass fiber cotton a plays a role in coarse filtration, used to intercept oil mist with larger particle size and protect the subsequent filter cotton. The glass fiber mesh fabric plays a role in supporting and establishing a vertical drainage channel, which is conducive to the discharge of oil mist from the filter cotton and effectively slows down the increase rate of resistance; the glass fiber mesh fabric can improve the uniformity of oil mist saturation in the filter cotton, improve the filter cotton quality factor, and improve the filtration efficiency. The glass fiber cotton b plays a role in deep filtration, capturing, condensing, transporting, and releasing oil mist with smaller particle size through gas-liquid coalescence filtration, thereby achieving deep purification of the oil mist-containing gas. The non-woven fabric at the air outlet reduces droplet entrainment and improves filtration efficiency.

[0015] (2) The glass fiber cotton of the present invention is treated with a surface modifier to change its affinity for oil mist, making it easier for an oil film to form on the surface of the glass fiber cotton, resulting in higher overall purification efficiency, better release of oil mist, delayed increase in operating resistance, and extended service life of the filter element (up to 2 to 3 years). BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 It is a structural schematic diagram of a glass fiber filter core for oil mist purification in the present invention.

[0018] Figure 2 It is a schematic diagram of the cross section of the filter element.

[0019] In the figure, 1. frame, 2. aluminum partition, 3. multi-layer glass fiber filter layer, 4. non-woven fabric at the air inlet end, 5. glass fiber cotton a, 6. glass fiber mesh fabric, 7. glass fiber cotton b, 8. non-woven fabric at the air outlet end. DETAILED DESCRIPTION

[0020] The present invention is described in detail below by specific examples, but the scope of protection of the present invention is not limited. Unless otherwise specified, the experimental methods adopted in the present invention are all conventional methods, and the experimental equipment, materials, reagents, etc. used can be obtained from commercial channels.

[0021] Example 1

[0022] A glass fiber filter element for oil mist purification, such as Figure 1 As shown, it includes a frame 1 and a composite layer; the composite layer is composed of several aluminum partitions 2 and a multi-layer glass fiber filter layer 3; the multi-layer glass fiber filter layer 3 is a continuous S-shaped curved structure, and aluminum partitions 2 are arranged in the semi-closed structural space within the S-shaped curved structure of the multi-layer glass fiber filter layer 3; a frame 1 is arranged around the outside of the composite layer.

[0023] The frame 1 is made of galvanized sheet or stainless steel sheet, and the four sides are fixed by rivets. The frame 1 can be made into a flat sealing type, a knife-edge embedded type, or a liquid tank sealing type according to different sealing forms. The flat sealing type requires a sealing strip to be attached to the air outlet end frame of the filter element. When the frame 1 is installed, it must ensure that there is no gap with the multi-layer glass fiber filter layer 3 and no air leakage. If necessary, glue injection can be used for sealing.

[0024] The aluminum partition 2 is made by corrugating machine pleating, and the pleat depth is 3 to 6 mm;

[0025] The multi-layer glass fiber filter layer 3, such as Figure 2 As shown, it includes the air inlet end non-woven fabric 4, glass fiber cotton a5, glass fiber mesh fabric 6, glass fiber cotton b7, and air outlet end non-woven fabric 8 laid in sequence;

[0026] The glass fiber wool a5 is formed by needle punching process, using short-cut glass fibers with a diameter of 10 to 20 μm and a length of 20 to 50 mm. After being opened, carded into a web, and gathered into a mat, it is needle punched together with the glass fiber mesh fabric 6 and staggeredly connected.

[0027] The glass fiber mesh fabric 6 is woven from glass fiber yarns, the diameter of the glass fiber yarns is 10 to 20 μm, and the mesh side length is 5 to 15 mm;

[0028] The glass fiber wool b7 adopts a cotton laying process, using glass fiber filaments with a diameter of 3 to 10 μm and a length of 50 to 100 mm, which are air-laid and then gathered into a felt.

[0029] The glass fiber cotton a5, glass fiber mesh fabric 6, and glass fiber cotton b7 are treated with a surface treatment agent that can change the wettability of the fiber surface;

[0030] The air inlet end non-woven fabric 4, glass fiber cotton a5, glass fiber mesh fabric 6, glass fiber cotton b7, and air outlet end non-woven fabric 8 are laminated and then used.

[0031] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made thereto. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A glass fiber filter element for oil mist purification, characterized in that: The invention comprises a frame (1) and a composite layer; the composite layer is composed of a plurality of aluminum partitions (2) and a multi-layer glass fiber filter layer (3); the multi-layer glass fiber filter layer (3) is a continuous S-shaped curved structure, and aluminum partitions (2) are arranged in the semi-enclosed structural space within the S-shaped curved structure of the multi-layer glass fiber filter layer (3); and a frame (1) is arranged around the outside of the composite layer; The multi-layer glass fiber filter layer (3) is a composite of a non-woven fabric and three layers of glass fiber products with different structures treated with a modifier. The multi-layer glass fiber filter layer (3) is specifically a composite of an air inlet end non-woven fabric (4), glass fiber cotton a (5), glass fiber mesh fabric (6), glass fiber cotton b (7), and an air outlet end non-woven fabric (8) which are layered in this order. Glass fiber wool a (5) plays the role of coarse filtering, glass fiber mesh fabric (6) plays the role of supporting and establishing vertical drainage channels, and glass fiber wool b (7) plays the role of deep filtering. The glass fiber cotton a (5) is formed by needle punching together with the glass fiber mesh fabric (6) and connected in an interlaced manner; the glass fiber cotton b (7) is formed by a cotton laying process; The modifier is a surface treatment agent that can change the wettability of the fiber surface. The modifier is a mixed solution of heptadecafluorodecyltriethoxysilane and isopropyl alcohol.

2. A glass fiber filter element for oil mist purification according to claim 1, characterized in that: The aluminum partition (2) is a corrugated pleated structure with a pleat depth of 3 to 6 mm.

3. A glass fiber filter element for oil mist purification according to claim 2, characterized in that: The glass fiber cotton a (5) and the glass fiber mesh fabric (6) are compounded by needle punching.

4. A glass fiber filter element for oil mist purification as claimed in claim 3, characterized in that: The glass fiber wool a (5) is made by needle-punching short glass fiber chopped fibers, and the diameter of the short chopped fibers is 10-20 μm and the length is 20-50 mm.

5. A glass fiber filter element for oil mist purification as claimed in claim 4, characterized in that: The glass fiber mesh fabric (6) is woven from glass fiber filaments, the diameter of the glass fiber filaments is 10-20 μm, and the mesh side length is 5-15 mm.

6. A glass fiber filter element for oil mist purification as claimed in claim 5, characterized in that: The glass fiber cotton b (7) is made of glass fiber layers, the glass fiber diameter is 3-10 μm, and the length is 50-100 mm; The frame (1) is any one of a plane sealing type, a knife edge embedded type, and a liquid tank sealing type according to different sealing forms.

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