Exhaust filtering device for powder bin

Abstract

The utility model relates to the field of powder closed pneumatic conveying, and discloses a powder bin exhaust filtering device which comprises a fixing plate, the outer wall of the fixing plate is fixedly connected with a plurality of stainless steel exhaust filtering net cylinders, the convex faces of the stainless steel exhaust filtering net cylinders are installed in a powder bin container, and the concave faces of the stainless steel exhaust filtering net cylinders face outwards. The air permeability of the stainless steel exhaust filter screen cylinder is 40-70 L / m < 2 >. S. An inner stainless steel main air pipe is installed outside the fixing plate, and inner stainless steel branch air pipes are fixedly connected to the positions, corresponding to the stainless steel exhaust filter screen cylinder, of the outer wall of the inner stainless steel main air pipe. Compared with the prior art, the fixing mode of the stainless steel filter screen cylinder overcomes the defects of a conventional design structure, the filter screen cylinders of different specifications are matched in a modularized and multi-dimensional mode, and dismounting and mounting operation is convenient and efficient; the design defects and hidden dangers caused by cloth bag filtration are solved, and the stability of equipment operation and the product quality are ensured.

Description

Technical Field

[0001] This utility model relates to the field of closed pneumatic conveying of powder, and in particular to a powder silo exhaust filtration device. Background Technology

[0002] The powder silo exhaust filter is mainly used for filtering compressed air in the powder during pneumatic conveying of powdered materials. High-pressure closed conveying is used for long-distance powder transportation.

[0003] In existing technology, when powder is conveyed under high pressure to the inlet of a sealed temporary powder storage silo, the compressed air and powder generate dust after the powder spreads in the large space. As the pressure and powder material increase, the pressure is released through the side dust collector bags, which block and separate the dust used to release the pressure. However, this technology has the following drawbacks: short continuous use cycle, large adhesion of fibers on the contact surface, poor backflushing cleaning effect, resulting in high cleaning and disinfection frequency, pilling of internal fibers after cleaning and disinfection, slow disassembly process, and a hard compression seal between the dust collector bag and the powder silo. This sealing method is not conducive to the maintenance of the dust collector bag. Due to production frequency and environmental factors, the backflushing pressure of the dust collector bag is not enough to shake off the dust adhering to the bag due to irregular production. Long-term use causes fiber friction to cause damage and fiber shedding, resulting in high replacement frequency and maintenance. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a powder silo exhaust filtration device, which aims to improve the defects and hidden dangers of existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a powder silo exhaust filtration device, comprising a fixed plate, wherein a plurality of stainless steel exhaust filter cylinders are fixedly connected to the outer wall of the fixed plate, the convex surface of the stainless steel exhaust filter cylinders is installed inside the powder silo container, the concave surface of the stainless steel exhaust filter cylinders faces outward, the air permeability of the stainless steel exhaust filter cylinders is 40-70L / m².S, and an inner stainless steel main air pipe is installed on the outside of the fixed plate, wherein an inner stainless steel branch air pipe is fixedly connected to the outer wall of the inner stainless steel main air pipe at the position corresponding to the stainless steel exhaust filter cylinders.

[0006] As a further description of the above technical solution:

[0007] The stainless steel exhaust filter cylinder has a fixed single-sided chuck and an outer single-sided chuck installed on both sides of the opening, and a clamp is installed between the fixed single-sided chuck and the outer single-sided chuck.

[0008] As a further description of the above technical solution:

[0009] A first silicone sealing gasket and a second silicone sealing gasket are respectively provided on both sides between the fixing plate and the powder hopper container.

[0010] As a further description of the above technical solution:

[0011] The length of the inner stainless steel air distribution pipe extending into the stainless steel exhaust filter cylinder is greater than 100mm.

[0012] This utility model has the following beneficial effects:

[0013] Compared with existing technologies, this utility model's stainless steel filter cylinder fixing method breaks through the drawbacks of conventional design structures, and its modular and multi-dimensional matching of filter cylinders of different specifications makes disassembly and assembly operations convenient and efficient; it solves the design defects and hidden dangers caused by bag filters, ensuring the stability of equipment operation and product quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a powder silo exhaust filtration device proposed in this utility model;

[0015] Figure 2 This utility model provides a structural diagram of a stainless steel exhaust filter cylinder for a powder silo exhaust filtration device.

[0016] Figure 3 This is a schematic diagram of the bottom of a stainless steel exhaust filter cylinder for a powder silo exhaust filtration device proposed in this utility model;

[0017] Figure 4 The bottom and top view of the stainless steel exhaust filter cylinder of the powder silo exhaust filtration device proposed in this utility model are shown.

[0018] Legend:

[0019] 1. Inner stainless steel main air pipe; 2. Inner stainless steel branch air pipe; 3. Fixing plate; 4. Fixing chuck on one side; 5. Clamp; 6. Outer chuck on one side; 7. Stainless steel exhaust filter screen; 8. First silicone sealing gasket; 9. Second silicone sealing gasket. Detailed Implementation

[0020] 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.

[0021] To further understand the contents of this utility model, a detailed description of this utility model will be provided with reference to the accompanying drawings.

[0022] Reference Figure 1-4This utility model provides an embodiment of a powder silo exhaust filtration device, comprising a fixed plate 3, with a plurality of stainless steel exhaust filter cylinders 7 fixedly connected to the outer wall of the fixed plate 3. The convex surfaces of the stainless steel exhaust filter cylinders 7 are installed inside the powder silo container, and the concave surfaces of the stainless steel exhaust filter cylinders 7 face outwards. The air permeability of the stainless steel exhaust filter cylinders 7 is 40-70 L / m². An inner stainless steel main air pipe 1 is installed on the outside of the fixed plate 3, and an inner stainless steel branch air pipe 2 is fixedly connected to the outer wall of the inner stainless steel main air pipe 1 at positions corresponding to the stainless steel exhaust filter cylinders 7. A fixed single-sided chuck 4 and an outer single-sided chuck 6 are respectively installed on both sides of the opening of the stainless steel exhaust filter cylinders 7, and a clamp 5 is installed between the fixed single-sided chuck 4 and the outer single-sided chuck 6. A first silicone sealing gasket 8 and a second silicone sealing gasket 9 are respectively provided on both sides between the fixed plate 3 and the powder silo container. The length of the inner stainless steel branch air pipe 2 extending into the interior of the stainless steel exhaust filter cylinder 7 is greater than 100 mm.

[0023] A powder silo exhaust filtration device includes four internal stainless steel main air pipes, nine internal stainless steel branch air pipes, one fixing plate, nine fixed single-sided chucks, nine 101 clamps, nine external single-sided chucks, nine stainless steel exhaust filter cylinders, one set of first silicone sealing gaskets, and one set of second silicone sealing gaskets. The exhaust filtration device is installed on the powder silo backflushing system. The exhaust filtration device is modular, with each stainless steel filter cylinder being 500mm in diameter, 101mm in diameter, and 3mm in wall thickness. It is made of 316L stainless steel, which has good corrosion resistance, good heat resistance, and extremely high mechanical and pressure resistance. The convex surface of the filter cylinder serves as the powder filtering surface, while the concave surface serves as the pressure release port. The nine stainless steel filter cylinders are evenly distributed on the fixing plate, ensuring uniform air permeability. The fixing method of the stainless steel filter cylinders breaks away from the drawbacks of conventional design structures, and the modular design allows for more dimensional matching of filter cylinders of different specifications, making assembly and disassembly convenient and efficient.

[0024] Working principle: A fixed plate component 3 is installed between the original powder silo and the backflushing main body, and a single-sided chuck component 4 is welded to it. The first silicone sealing gasket 8 and the second silicone sealing gasket component 9 are used for shock absorption and sealing, serving as a modular support. A stainless steel exhaust filter cylinder 7 and an outer single-sided chuck 6 are used to create a modular unit for the exhaust filter device. When the modular unit of the exhaust filter device is assembled with the modular support, a new type of powder silo exhaust filter device is formed. When the powder spreads in the sealed space, the compressed air and powder generate dust. As the pressure and powder material increase, the stainless steel filter cylinder filter layer protects and blocks the powder, and the pressure is diverted and released. The stainless steel filter cylinder filter layer maintains the normal function of exhaust filtration by using the inner stainless steel main air pipe 1 and the inner stainless steel branch air pipe 2 for timed backflushing.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A powder silo exhaust filtration device, comprising a fixed plate (3), characterized in that: The outer wall of the fixed plate (3) is fixedly connected with several stainless steel exhaust filter cylinders (7). The convex surface of the stainless steel exhaust filter cylinder (7) is installed inside the powder silo container, and the concave surface of the stainless steel exhaust filter cylinder (7) faces outward. The air permeability of the stainless steel exhaust filter cylinder (7) is 40-70L / m². The outer side of the fixed plate (3) is equipped with an inner stainless steel main air pipe (1). The outer wall of the inner stainless steel main air pipe (1) is fixedly connected with an inner stainless steel branch air pipe (2) at the position corresponding to the stainless steel exhaust filter cylinder (7).

2. The powder silo exhaust filtration device according to claim 1, characterized in that: The stainless steel exhaust filter cylinder (7) has a fixed single-sided chuck (4) and an outer single-sided chuck (6) installed on both sides of the opening, and a clamp (5) is installed between the fixed single-sided chuck (4) and the outer single-sided chuck (6).

3. The powder silo exhaust filtration device according to claim 1, characterized in that: A first silicone sealing gasket (8) and a second silicone sealing gasket (9) are respectively provided on both sides between the fixing plate (3) and the powder hopper container.

4. The powder silo exhaust filtration device according to claim 1, characterized in that: The length of the inner stainless steel gas distribution pipe (2) extending into the stainless steel exhaust filter cylinder (7) is greater than 100 mm.

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