Film-coated anti-static dust removal filter bag

Abstract

The utility model relates to dust filter bag technical field, and disclose a kind of film-coated anti-static dust filter bag, including dust filter bag body, dust filter bag body includes by outer to inner sequentially arranged film-coated layer, wear-resistant layer, reinforcing layer, anti-static layer and base cloth layer;Film-coated layer uses PTFE film;Wear-resistant layer is woven from ultra-high molecular weight polyethylene fiber;Reinforcing layer is woven from warp and weft interlaced polyester industrial silk;Anti-static layer is woven from stainless steel fiber and carbon fiber blended spinning;Base cloth layer is made of glass fiber and aramid fiber blended spinning.The utility model in the present application, through setting film-coated layer, realize the efficient filtration of fine dust, wear-resistant layer dust filter bag body overall wear resistance, reinforcing layer improves the tensile and tear resistance of dust filter bag body, anti-static layer effectively prevents static electricity accumulation, base cloth layer improves the service life of dust filter bag body, realize the improvement of dust filter bag body anti-static and overall performance.

Description

Technical Field

[0001] This utility model relates to the field of dust removal filter bag technology, specifically a membrane-coated antistatic dust removal filter bag. Background Technology

[0002] Dust collector filter bags are the core component of baghouse dust collectors and are widely used in dust control in industries such as power, metallurgy, chemical, and building materials. Their performance directly affects the dust removal efficiency and operational stability of the dust collector. With the continuous development of industrial production, the requirements for dust collector filter bags are increasing. They not only need to have high-efficiency filtration performance, but also need to adapt to complex working environments, such as high temperature, high humidity, and environments containing flammable and explosive dust.

[0003] The base materials of existing membrane filter bags are mostly polymer materials such as polyester and polypropylene. These materials have strong insulation properties. During the filtration of dust-laden gas, the friction between dust and the filter bag surface can easily generate static electricity. When the static electricity accumulates to a certain level, it may cause spark discharge. This poses a great safety hazard when handling flammable and explosive dust (such as coal powder, aluminum powder, flour, etc.), and may even lead to an explosion. Although some filter bags use the addition of conductive fibers to achieve anti-static properties, the distribution of conductive fibers is uneven, the anti-static effect is unstable, and it will reduce the filtration accuracy and air permeability of the filter bag. Therefore, there is an urgent need in this field to improve dust collector filter bags to overcome the shortcomings of the existing technology. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a membrane-coated antistatic dust collector filter bag, which improves the antistatic properties and overall performance of the dust collector filter bag.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a membrane-coated antistatic dust removal filter bag, comprising a dust removal filter bag body, wherein the dust removal filter bag body comprises a membrane layer, a wear-resistant layer, a reinforcing layer, an antistatic layer and a base fabric layer arranged sequentially from the outside to the inside;

[0006] The coating layer is made of PTFE film;

[0007] The wear-resistant layer is woven from ultra-high molecular weight polyethylene fibers;

[0008] The reinforcing layer is woven from interlaced polyester industrial yarns in both warp and weft directions;

[0009] The antistatic layer is made of a blend of stainless steel fiber and carbon fiber;

[0010] The base fabric layer is made of a blend of glass fiber and aramid fiber;

[0011] It also includes a support unit for supporting and fixing the dust collector filter bag.

[0012] Preferably, the support unit includes a lower fixing ring located at the bottom of the dust collector filter bag and an upper fixing ring located at the top of the dust collector filter bag. The lower part of the upper fixing ring is provided with a snap-fit ​​groove adapted to the upper part of the dust collector filter bag. Several locking threaded rods are passed through the lower fixing ring. The upper and lower ends of the dust collector filter bag are reserved with reserved holes adapted to the locking threaded rods. The upper fixing ring is provided with threaded holes adapted to the ends of the locking threaded rods.

[0013] Preferably, a conductive grounding pad is fitted on the side of the locking threaded rod, and a conductive grounding wire is fixedly installed on the side of the grounding pad, with the other end of the grounding wire grounded.

[0014] Preferably, the upper fixing ring has a snap-fit ​​step on its side that matches the mounting hole on the mounting base plate, and a locking ring is threadedly connected to the upper side of the upper fixing ring.

[0015] Preferably, one side of the locking ring abuts against the upper part of the fixing ring, and the side of the locking ring is polygonal.

[0016] Preferably, the lower inner and outer sides of the upper fixing ring are provided with inclined guide angles.

[0017] Preferably, the reserved hole is located between the reinforcing layer and the antistatic layer.

[0018] To address the shortcomings of existing technologies, this utility model provides a membrane-coated antistatic dust removal filter bag, overcoming the deficiencies of the prior art. The beneficial effects of this utility model are as follows:

[0019] 1. In this utility model, a membrane layer is set to achieve efficient filtration of fine dust, a wear-resistant layer to enhance the overall wear resistance of the dust filter bag, a reinforcing layer to improve the tensile and tear resistance of the dust filter bag, an antistatic layer to effectively prevent static electricity accumulation, and a base fabric layer to improve the service life of the dust filter bag, thereby improving the antistatic properties and overall performance of the dust filter bag.

[0020] 2. In this utility model, the lower fixing ring, the upper fixing ring, and the locking threaded rod facilitate the fixing of the dust collector filter bag body, and the locking ring facilitates the installation and fixing of the dust collector filter bag body to the mounting base plate.

[0021] 3. In this utility model, by setting a grounding pad and a grounding wire, the grounding pad is sleeved on the side of the locking threaded rod, which can quickly release the static electricity generated on the surface of the dust collector filter bag through the grounding pad and the grounding wire, thereby further improving the anti-static effect of the dust collector filter bag.

[0022] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0023] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a cross-sectional structural schematic diagram of the dust removal filter bag body of this utility model;

[0026] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0027] Figure 4 for Figure 2 Enlarged structural diagram at point B.

[0028] In the diagram: 1. Dust collector filter bag body; 2. Support unit; 3. Coating layer; 4. Wear-resistant layer; 5. Reinforcing layer; 6. Antistatic layer; 7. Base fabric layer; 8. Lower fixing ring; 9. Upper fixing ring; 10. Locking threaded rod; 11. Reserved hole; 12. Threaded hole; 13. Snap-fit ​​groove; 14. Grounding pad; 15. Grounding wire; 16. Snap-fit ​​step; 17. Mounting base plate; 18. Locking ring; 19. Guide bevel. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] Please see Figures 1-4 A membrane-coated antistatic dust removal filter bag includes a dust removal filter bag body 1, which includes a membrane layer 3, a wear-resistant layer 4, a reinforcing layer 5, an antistatic layer 6 and a base fabric layer 7 arranged sequentially from the outside to the inside.

[0032] The coating layer 3 is made of PTFE film. The film thickness is 0.01-0.03 mm, the micropore diameter is 0.1-0.5 μm, and the porosity is 85%-90%. PTFE film has excellent chemical stability, high and low temperature resistance (-200℃ to 260℃) and non-stickiness. The microporous structure can achieve high-efficiency filtration of fine dust (filtration efficiency ≥99.99%), while reducing dust adhesion and reducing filtration resistance (initial filtration resistance ≤100 Pa).

[0033] The wear-resistant layer 4 is woven from ultra-high molecular weight polyethylene fiber. The fiber surface is treated with silane coupling agent. Ultra-high molecular weight polyethylene fiber has excellent wear resistance (more than 5 times that of polyester) and impact resistance. The silane coupling agent treatment can improve the bonding strength between the wear-resistant layer 4 and the reinforcing layer 5 and prevent interlayer delamination.

[0034] The reinforcing layer 5 is woven from interwoven polyester industrial yarns in the warp and weft directions. The diameter of the polyester industrial yarns is 0.1-0.2 mm, and the warp and weft density is 50-60 yarns / cm. The reinforcing layer can enhance the structural strength of the filter bag body, improve its tensile and tear resistance (breaking strength ≥800N / 5cm), and prevent the filter bag from being damaged due to excessive force during installation and use.

[0035] The antistatic layer 6 is made of stainless steel fiber and carbon fiber blended weaving. The stainless steel fiber accounts for 70% to 80% and the carbon fiber accounts for 20% to 30%. The weaving density is 30 to 40 threads / cm. Both stainless steel fiber and carbon fiber have good conductivity (volume resistivity ≤10-3Ω·cm). The blending of the two can make the conductivity of the antistatic layer uniform and stable, effectively preventing the accumulation of static electricity.

[0036] The base fabric layer 7 is made of a blend of glass fiber and aramid fiber, with glass fiber accounting for 60% to 70% and aramid fiber accounting for 30% to 40%. Glass fiber has excellent high temperature resistance (long-term operating temperature can reach 260℃), while aramid fiber has high strength and corrosion resistance. The blending of the two allows the base fabric layer to have the characteristics of high temperature resistance, high strength and corrosion resistance, thereby improving the service life of the dust collector filter bag 1 (service life can reach 12-18 months).

[0037] It also includes a support unit 2 for supporting and fixing the dust collector filter bag 1. The support unit 2 supports and fixes the dust collector filter bag 1, which facilitates the installation of the dust collector filter bag 1 during use.

[0038] Example 2

[0039] Please see Figure 3 and Figure 4 This embodiment includes the above embodiment, wherein the support unit 2 includes a lower fixing ring 8 located at the bottom of the dust collector filter bag 1 and an upper fixing ring 9 located at the upper part of the dust collector filter bag 1. The lower part of the upper fixing ring 9 is provided with a snap-fit ​​groove 13 adapted to the upper part of the dust collector filter bag 1. Several locking threaded rods 10 are passed through the lower fixing ring 8. The upper and lower ends of the dust collector filter bag 1 are reserved with reserved holes 11 adapted to the locking threaded rods 10. The upper fixing ring 9 is provided with a threaded hole 12 adapted to the end of the locking threaded rod 10. A conductive grounding pad 14 is sleeved on the side of the locking threaded rod 10. A conductive grounding wire 15 is fixedly installed on the side of the grounding pad 14. The other end of the grounding wire 15 is grounded.

[0040] In this embodiment, the specific implementation method is as follows: When it is necessary to fix the dust collector filter bag 1, the lower fixing ring 8 is placed at the lower part of the dust collector filter bag 1, and the upper fixing ring 9 is snapped onto the upper part of the dust collector filter bag 1 through the snap-fit ​​groove 13. The position of the threaded hole 12 is aligned with the position of the reserved hole 11 on the dust collector filter bag 1. The locking threaded rod 10 passes through the lower fixing ring 8 and the reserved hole 11, and the upper end of the locking threaded rod 10 is threadedly connected to the threaded hole 12 on the upper fixing ring 9, thereby supporting the dust collector filter bag 1. One or more of these... When the locking threaded rod 10 is installed, a grounding pad 14 is fitted on its side. The grounding wire 15 on the side of the grounding pad 14 is connected to the external ground wire or the ground. When static electricity is generated in the dust collector filter bag 1, it is conducted to the grounding pad 14 through the locking threaded rod 10 and released through the grounding wire 15. This can quickly release the static electricity generated on the surface of the dust collector filter bag 1 through the grounding pad 14 and the grounding wire 15 (static dissipation time ≤ 0.1s), further improving the antistatic effect of the dust collector filter bag 1.

[0041] Example 3

[0042] Please see Figures 1-3 This embodiment includes all the above embodiments, and further includes: the upper fixing ring 9 has a snap-fit ​​step 16 on its side that is adapted to the mounting hole on the mounting base plate 17; a locking ring 18 is threadedly connected to the upper side of the upper fixing ring 9; one side of the locking ring 18 is tightly against the upper part of the upper fixing ring 9; the side of the locking ring 18 is polygonal; the lower inner and outer sides of the upper fixing ring 9 are provided with inclined guide angles 19; and the reserved hole 11 is located between the reinforcing layer 5 and the antistatic layer 6.

[0043] In this embodiment, the dust filter bag 1 and the mounting base plate 17 are installed together. The upper fixing ring 9 passes through the mounting hole on the mounting base plate 17 and the locking step 16 is engaged with the mounting hole on the mounting base plate 17. The locking ring 18 is threaded onto the side of the upper fixing ring 9. The two sides of the locking ring 18 are tightly abutted against the mounting base plate 17 and the upper part of the upper fixing ring 9, respectively, to limit and fix the position of the upper fixing ring 9. The locking ring 18 also blocks the position of the threaded hole 12 to prevent impurities from entering the threaded hole 12 and making it difficult to disassemble later. The polygonal shape of the locking ring 18 makes it easy to tighten. The guide angle 19 reduces the resistance to the gas rising. The locking thread rod 10 is located between the reinforcing layer 5 and the antistatic layer 6, which is more conducive to the transmission of static electricity.

[0044] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A membrane-coated antistatic dust collector filter bag, comprising a dust collector filter bag body (1), characterized in that, The dust collector filter bag (1) includes, from the outside to the inside, a membrane layer (3), a wear-resistant layer (4), a reinforcing layer (5), an antistatic layer (6), and a base fabric layer (7); The coating layer (3) is made of PTFE film; The wear-resistant layer (4) is woven from ultra-high molecular weight polyethylene fibers; The reinforcing layer (5) is woven from interwoven polyester industrial yarns in the warp and weft directions; The antistatic layer (6) is made of stainless steel fiber and carbon fiber blended and woven. The base fabric layer (7) is made of a blend of glass fiber and aramid fiber; It also includes a support unit (2) for supporting and fixing the dust collector filter bag (1).

2. The membrane-coated antistatic dust removal filter bag according to claim 1, characterized in that, The support unit (2) includes a lower fixing ring (8) located at the bottom of the dust collector filter bag body (1) and an upper fixing ring (9) located at the top of the dust collector filter bag body (1). The lower part of the upper fixing ring (9) is provided with a snap-fit ​​groove (13) adapted to the upper part of the dust collector filter bag body (1). Several locking threaded rods (10) are passed through the lower fixing ring (8). The upper and lower ends of the dust collector filter bag body (1) are reserved with reserved holes (11) adapted to the locking threaded rods (10). The upper fixing ring (9) is provided with threaded holes (12) adapted to the ends of the locking threaded rods (10).

3. The membrane-coated antistatic dust removal filter bag according to claim 2, characterized in that, A conductive grounding pad (14) is fitted on the side of the locking thread rod (10), and a conductive grounding wire (15) is fixedly installed on the side of the grounding pad (14), with the other end of the grounding wire (15) grounded.

4. The membrane-coated antistatic dust removal filter bag according to claim 2, characterized in that, The upper fixing ring (9) has a snap-fit ​​step (16) on its side that is adapted to the mounting hole on the mounting base plate (17), and a locking ring (18) is threadedly connected to the upper side of the upper fixing ring (9).

5. The coated antistatic dust removal filter bag according to claim 4, characterized in that, The locking ring (18) is pressed against the upper part of the fixing ring (9) on one side, and the side of the locking ring (18) is polygonal.

6. The membrane-coated antistatic dust removal filter bag according to claim 2, characterized in that, The lower inner and outer sides of the upper fixing ring (9) are provided with inclined guide angles (19).

7. The membrane-coated antistatic dust removal filter bag according to claim 2, characterized in that, The reserved hole (11) is located between the reinforcing layer (5) and the antistatic layer (6).

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