Waste gas filtering equipment capable of recovering waste heat

Abstract

The utility model discloses waste heat recovery waste gas filtering equipment which comprises a filtering box body, a base, air inlets, a non-woven fabric layer I, an electrostatic spinning film layer, a non-woven fabric layer II, an exhaust pipe and a heat recovery component, the filtering box body is installed on the base, the air inlets are formed in the two sides of the filtering box body, and the heat recovery component is installed on the base. A first non-woven fabric layer, an electrostatic spinning film layer and a second non-woven fabric layer are installed on the two sides in the filter box body respectively, the first non-woven fabric layer and the second non-woven fabric layer are installed on the two sides of the electrostatic spinning film layer respectively, exhaust pipes are arranged on the two sides of the filter box body, heat recovery components are arranged on the two sides of the filter box body, and the exhaust pipes are communicated with the heat recovery components. According to the utility model, pollutants with different particle sizes in waste gas are efficiently filtered, the overall filtering and purifying effect is improved, the exhausted waste gas meets the stricter environmental protection standard, heat energy can be recycled, the energy cost of enterprises is reduced, and the energy utilization rate is improved.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to a waste gas filtration device with waste heat recovery capability. Background Technology

[0002] Casting is a method of pouring liquid metal into a casting cavity that conforms to the shape of the part, and then cooling and solidifying it to obtain the part or blank. With the development of casting technology, my country's casting industry has widely adopted self-hardening furan resin and phenolic resin sand molding. Resin sand molds emit a lot of waste gas during pouring and cooling. The existing waste gas treatment is to filter it with non-woven filter materials in the treatment device.

[0003] However, existing nonwoven filter materials are all composed of multi-layer fiber materials, and most of them are natural or chemical fibers. They have poor adsorption capacity for hydrophilic particulate matter in exhaust gas. In addition, conventional equipment needs to maintain a constant temperature during operation, regardless of whether it is working or not, which leads to the waste of waste heat and resources. Utility Model Content

[0004] The purpose of this invention is to provide a waste gas filtration device with waste heat recovery capability to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a waste gas filtration device with waste heat recovery capability, comprising a filter box, a base, an air inlet, a non-woven fabric layer one, an electrospun membrane layer, a non-woven fabric layer two, an exhaust pipe, and a heat recovery component. The filter box is installed on the base, and air inlets are provided on both sides of the filter box. Non-woven fabric layer one, an electrospun membrane layer, and non-woven fabric layer two are respectively installed on both sides of the filter box. Non-woven fabric layer one and non-woven fabric layer two are respectively installed on both sides of the electrospun membrane layer. An exhaust pipe is provided on both sides of the filter box, and a heat recovery component is provided on both sides of the filter box.

[0006] In a preferred embodiment: the heat recovery component includes a heat conduction element, a pipe and a heat recovery box, both sides of the filter box are connected to pipes, and the end of the pipe away from the filter box is connected to the heat recovery box, and the heat conduction element is disposed inside the filter box and the pipe.

[0007] In a preferred embodiment: the heat conduction element includes a first metal wire mesh and a second metal wire mesh, the first metal wire mesh being welded into the filter box, the second metal wire mesh being welded into the pipe, and the first and second metal wire meshes being welded to each other at their closest ends.

[0008] In a preferred embodiment, the wire mesh is an alternating mesh structure or a weft-arranged structure.

[0009] In a preferred embodiment: liquid water is provided at the lower end of the interior of the heat recovery box, and both the first nonwoven fabric layer and the second nonwoven fabric layer are glass fiber nonwoven fabrics.

[0010] In a preferred embodiment: the equipment body is installed on the upper end of the base, and an air pump is provided on the outer wall of the exhaust pipe.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0012] This invention, through the arrangement of a filter box, base, air inlet, non-woven fabric layer one, electrospun membrane layer, non-woven fabric layer two, exhaust pipe, and heat recovery components, ensures efficient filtration of pollutants of different particle sizes in exhaust gas through the composite structure of non-woven fabric layer one and electrospun membrane layer, improving the overall filtration and purification effect and enabling the discharged exhaust gas to meet stricter environmental standards. On the one hand, non-woven fabric layer two effectively reduces heat loss from the filter box to the external environment, improving heat recovery efficiency. Regarding heat recovery, the liquid water in the heat recovery box absorbs heat and can be used for other industrial processes or domestic purposes, such as preheating production water or heating, achieving secondary energy utilization and reducing energy costs for enterprises. This reduces costs and improves energy efficiency. On the other hand, as the outermost protective structure of the equipment, the second nonwoven layer effectively isolates the internal high-temperature components from the production personnel during equipment operation, avoiding the risk of burns to operators due to accidental contact with the equipment. This provides reliable safety protection for operators and meets the requirements of safe production. At the same time, when particulate matter in the exhaust gas passes through the filter material at high speed, the presence of the first and second metal meshes effectively prevents excessive accumulation of static electricity due to the charge transfer between the particulate matter and the metal wires, thus preventing sparks or discharges caused by static electricity. This greatly reduces the safety hazards caused by static electricity in the nonwoven filter material, ensuring the stable operation and safe use of the equipment. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate 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, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the metal wire mesh of this utility model with a weft-oriented arrangement structure;

[0017] Figure 4 This is a schematic diagram of the metal wire mesh of this utility model, which has an alternating mesh structure.

[0018] In the diagram: 1. Filter box; 2. Base; 3. Air inlet; 4. Nonwoven fabric layer one; 5. Electrospun membrane layer; 6. Nonwoven fabric layer two; 7. Exhaust pipe; 8. Heat conduction component; 81. Metal wire mesh one; 82. Metal wire mesh two; 9. Pipeline; 10. Heat recovery box; 11. Equipment body. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-4 This utility model provides a technical solution: a waste gas filtration device with waste heat recovery capability, comprising a filter box 1, a base 2, an air inlet 3, a nonwoven fabric layer 4, an electrospun membrane layer 5, a nonwoven fabric layer 6, an exhaust pipe 7, and a heat recovery component. The filter box 1 is installed on the base 2, and air inlets 3 are provided on both sides of the filter box 1. The nonwoven fabric layer 4, the electrospun membrane layer 5, and the nonwoven fabric layer 6 are respectively installed on both sides of the filter box 1. The nonwoven fabric layer 4 and the nonwoven fabric layer 6 are respectively installed on both sides of the electrospun membrane layer 5. An exhaust pipe 7 is provided on both sides of the filter box 1, and a heat recovery component is provided on both sides of the filter box 1.

[0021] The heat recovery component includes a heat conduction element 8, a pipe 9, and a heat recovery box 10. Both sides of the filter box 1 are connected to the pipe 9, and the end of the pipe 9 away from the filter box 1 is connected to the heat recovery box 10. The heat conduction element 8 is located inside the filter box 1 and the pipe 9.

[0022] The heat conduction component 8 includes a first metal wire mesh 81 and a second metal wire mesh 82. The first metal wire mesh 81 is welded inside the filter box 1, and the second metal wire mesh 82 is welded inside the pipe 9. The first metal wire mesh 81 and the second metal wire mesh 82 are welded to each other at their closest ends.

[0023] The metal wire mesh 81 has an alternating mesh structure or a weft arrangement structure. When the metal wire mesh 81 has an alternating mesh structure, the mesh size is 0.5 square centimeters. When the metal wire mesh 81 has a weft arrangement structure, the arrangement density is 2 wires per centimeter.

[0024] Liquid water is provided at the lower end of the interior of the heat recovery box 10, and both the nonwoven fabric layer 4 and the nonwoven fabric layer 6 are glass fiber nonwoven fabrics.

[0025] The equipment body 11 is installed on the upper end of the base 2, and an air pump is provided on the outer wall of the exhaust pipe 7.

[0026] The working principle of this utility model is as follows: Waste gas is drawn into the filter box 1 by a vacuum pump for filtration. The waste gas is first filtered through a non-woven fabric layer 4, and then through an electrostatic spun membrane layer 5 to adsorb fine particles. Since the filter material contains metal mesh 1 and metal mesh 2, static electricity generated during high-speed filtration can be avoided, reducing safety hazards caused by static electricity in the non-woven filter material. Then, it is filtered through a non-woven fabric layer 6. The outermost non-woven fabric layer 6 reduces residual heat loss and protects production personnel from contact with the equipment, reducing the risk of burns. The filtered waste gas is discharged from the filter box 1 through the exhaust pipe 7. The high temperature heat in the filter box 1 is transferred to the heat recovery box 10 through the heat transfer conductor and pipe 9. Then, through heat exchange with liquid water, the heat in the filter box 1 can be recovered and utilized. This avoids the waste of heat energy and reduces carbon emissions when the equipment body 11 is in use or not.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A waste gas filtration device with waste heat recovery capability, characterized in that: The filter box includes a filter housing (1), a base (2), an air inlet (3), a nonwoven fabric layer (4), an electrospun membrane layer (5), a nonwoven fabric layer (6), an exhaust pipe (7), and a heat recovery component. The filter housing (1) is installed on the base (2). An air inlet (3) is provided on both sides of the filter housing (1). A nonwoven fabric layer (4), an electrospun membrane layer (5), and a nonwoven fabric layer (6) are respectively installed on both sides of the filter housing (1). The nonwoven fabric layer (4) and the nonwoven fabric layer (6) are respectively installed on both sides of the electrospun membrane layer (5). An exhaust pipe (7) is provided on both sides of the filter housing (1). A heat recovery component is provided on both sides of the filter housing (1).

2. The waste gas filtration device with waste heat recovery capability according to claim 1, characterized in that: The heat recovery component includes a heat conduction element (8), a pipe (9) and a heat recovery box (10). Both sides of the filter box (1) are connected to the pipe (9). The end of the pipe (9) away from the filter box (1) is connected to the heat recovery box (10). The heat conduction element (8) is located inside the filter box (1) and the pipe (9).

3. The waste gas filtration device with waste heat recovery capability according to claim 2, characterized in that: The heat conduction component (8) includes a first metal wire mesh (81) and a second metal wire mesh (82). The first metal wire mesh (81) is welded inside the filter box (1), and the second metal wire mesh (82) is welded inside the pipe (9). The first metal wire mesh (81) and the second metal wire mesh (82) are welded to each other at their closest ends.

4. The waste gas filtration device with waste heat recovery capability according to claim 3, characterized in that: The metal wire mesh (81) has an alternating mesh structure or a weft arrangement structure.

5. The waste gas filtration device with waste heat recovery capability according to claim 2, characterized in that: Liquid water is provided at the lower end of the interior of the heat recovery box (10), and both the first nonwoven fabric layer (4) and the second nonwoven fabric layer (6) are glass fiber nonwoven fabrics.

6. The waste gas filtration device with waste heat recovery capability according to claim 1, characterized in that: The base (2) is equipped with the equipment body (11) at its upper end, and the exhaust pipe (7) is equipped with an air pump on its outer wall.

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