Air curtain type filter

Abstract

The air curtain type filter comprises a hollow disc, the hollow disc is of an annular structure, an air source air inlet connector is connected to the hollow disc, an included angle is formed between the air source air inlet connector and the hollow disc, the inner arc of the hollow disc is connected with a plurality of reverse blowing openings, all the reverse blowing openings are arranged in an arc array around the circle center of the hollow disc, and included angles are formed between the reverse blowing openings and the tangent line of the inner arc of the hollow disc; in conclusion, due to the design of the hollow disc, gas can be transmitted to each reverse blowing opening through an internal channel, and uniform distribution of gas flow is ensured; the utility model aims to overcome the defects of a traditional security filter in a pneumatic conveying system, and prevents materials from directly entering an air return pipeline by forming an air curtain, so that the possibility of pipeline blockage is reduced, and the risk that the materials penetrate through the filter is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of pneumatic conveying technology, specifically relating to an air curtain filter. Background Technology

[0002] In industries such as sodium and lithium battery materials, pneumatic conveying return air systems typically use safety filters to protect the return air ducts. However, this method has drawbacks when protecting powdered materials. For example, materials can easily enter the ducts and cause blockages, or they can penetrate the safety filters and enter the return air ducts or air compressors, damaging high-value equipment. Utility Model Content

[0003] The present invention aims to provide an air curtain filter to solve the technical problem that materials in existing pneumatic conveying return air systems can easily enter the pipes and cause blockages, or enter the return air pipes and air compressors and cause damage.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] An air curtain filter includes a hollow disc, which has a circular structure. An air source inlet is connected to the hollow disc, and the air source inlet is at an angle to the hollow disc. Several backflush ports are connected to the inner arc of the hollow disc. All the backflush ports are arranged in an arc array around the center of the hollow disc, and the backflush ports are at an angle to the tangent of the inner arc of the hollow disc.

[0006] Furthermore, the hollow disc is made of 304 or 316 stainless steel.

[0007] Furthermore, the outer wall of the hollow disc is coated with a PTFE protective layer.

[0008] Furthermore, an intake regulating valve is installed at the air source intake interface.

[0009] Compared with existing technologies, the beneficial effects of this invention are as follows: The hollow disc design allows gas to be transmitted through internal channels to each backflush port, ensuring uniform airflow distribution; the air source inlet is at a certain angle to the hollow disc, which helps guide the airflow direction; the backflush ports are arranged along the inner arc of the hollow disc and form a certain angle with the tangent of the inner arc. This layout helps to create an effective air curtain, blocking material from entering the pipeline while allowing air to pass through; because this invention reduces pipeline blockage, it can reduce production downtime and costs caused by maintenance; by preventing material from entering the return air duct and air compressor, it can prevent damage to these devices and extend their service life. Attached Figure Description

[0010] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0011] Figure 1 This is a schematic diagram of the structure of the air curtain filter of this utility model. Detailed Implementation

[0012] 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.

[0013] The present invention will be further described in detail below with reference to the embodiments.

[0014] like Figure 1 As shown, a specific embodiment of the air curtain filter provided by this utility model is as follows:

[0015] An air curtain filter includes a hollow disc 1, which has a circular structure. An air source inlet 2 is connected to the hollow disc 1. The air source inlet 2 and the hollow disc 1 have an angle. Several back-blowing ports 3 are connected to the inner arc of the hollow disc 1. All the back-blowing ports 3 are arranged in an arc array around the center of the hollow disc 1. The back-blowing ports 3 have an angle with the tangent of the inner arc of the hollow disc 1.

[0016] In this embodiment, the hollow disc 1 of the air curtain filter housing is hollow and has an air source inlet 2. The inner arc is provided with a backflush port 3. The air curtain filter is installed at the feed inlet of the hopper. When the material enters the hopper, the air source enters the backflush port 3 inside the hollow disc 1 through the air source inlet and is sprayed out from the backflush port 3 to form an air curtain protection. The air curtain blocks the material powder in the feed hopper, while the gas can pass through. The air curtain can effectively solve the problems of blocking the material from entering the pipeline and causing pipeline blockage (reducing downtime losses caused by pipeline blockage, reducing labor costs and frequent disassembly and replacement of the safety filter element), as well as reducing the problem of material penetrating the safety filter and entering the return air duct and air compressor, which could damage high-value equipment. It is easy to use and greatly reduces downtime losses and labor costs caused by pipeline blockage and avoids damage to high-value equipment.

[0017] In addition, the hollow disc 1 is made of 304 or 316 stainless steel. The use of 304 or 316 stainless steel as the material for the hollow disc 1 is due to its good corrosion resistance, making it suitable for use in industrial environments, especially when handling chemicals.

[0018] Preferably, the outer wall of the hollow disc 1 is coated with a PTFE protective layer. The PTFE coating not only increases mechanical strength but also reduces the possibility of material adhering to the filter surface because PTFE has a very low coefficient of friction and non-adhesive properties.

[0019] An air inlet regulating valve 4 is installed at the air source inlet interface 2 to adjust the gas pressure and flow rate entering the hollow disc 1, ensuring that the strength of the air curtain is moderate, which can effectively block materials without wasting too much compressed air resources.

[0020] It should be noted that, in this document, terms such as “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.

[0021] 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. An air curtain filter, characterized in that: It includes a hollow disc, which is a circular structure. An air source inlet is connected to the hollow disc, and the air source inlet is at an angle to the hollow disc. Several back-blowing ports are connected to the inner arc of the hollow disc. All the back-blowing ports are arranged in an arc array around the center of the hollow disc, and the back-blowing ports are at an angle to the tangent of the inner arc of the hollow disc.

2. The air curtain filter according to claim 1, characterized in that: The hollow plate is made of 304 or 316 stainless steel.

3. The air curtain filter according to claim 1, characterized in that: The outer wall of the hollow disc is coated with a PTFE protective layer.

4. The air curtain filter according to claim 1, characterized in that: An air intake regulating valve is installed at the air source inlet interface.

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