Dry waste gas treatment device

Abstract

The utility model discloses a dry waste gas treatment device which comprises a box body, a filtering piece and a heat exchange pipe, the box body is provided with an upper opening and a lower opening, and the opening in the lower part of the box body is provided with a gas inlet and an ash discharge hopper which are communicated with the box body; the filter piece comprises a fixed frame and a filter screen, and the filter screen is arranged in the fixed frame; the heat exchange pipes are partially arranged in the fixing frame, and the heat exchange pipes are arranged between the filter screens. One or more heat exchange pipes capable of exchanging heat are arranged on the filter screen, when hot air enters from the air inlet, dust and impurities in the air can be filtered through the filter screen, heat in the passing air is taken away through heat exchange light, redundant heat is reasonably utilized, and the heat exchange efficiency is improved. Meanwhile, hollow filter screens are arranged on the heat exchange pipes, the heat exchange effect is enhanced, and heat waste is avoided; meanwhile, the filter screen located above the dust outlet is obliquely arranged, when air supply is stopped, filtered dust directly falls into the dust outlet, and direct cleaning of the dust is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of papermaking production, in particular to a drying waste gas treatment device. Background Art

[0002] Papermaking is an important invention of the working people in ancient China. It is divided into two forms: mechanical and manual. The mechanical process is carried out continuously on a papermaking machine. The pulp suitable for paper quality is diluted with water to a certain concentration, and initially dehydrated on the wire of the papermaking machine to form wet paper sheets, which are then squeezed and dehydrated, and then dried into paper. With the development of society, papermaking has now changed from traditional manual papermaking to mechanical papermaking. However, in papermaking, the two processes of pulping and papermaking are very likely to produce a large amount of waste gas in these two processing links. These air have certain pollution and cannot be directly discharged into the air. Now they are treated.

[0003] Existing waste gas recycling devices need to recover waste heat from waste gas, etc. Existing mechanisms simply filter dust, which is inefficient and has poor waste gas filtering effects. In addition, they are set separately from waste heat from waste gas, occupying a large space. Utility Model Content

[0004] One object of the utility model is to provide a dry waste gas treatment device which can solve at least any aspect of the above-mentioned technical problems.

[0005] A further object of the present invention is to avoid heat waste.

[0006] Another further object of the utility model is to improve the utilization effect of heat and filter dust in the gas.

[0007] In particular, the utility model provides a dry waste gas treatment device, comprising a box body, the box body having upper and lower openings, and the opening at the lower part of the box body is provided with an air inlet and an ash hopper connected to the box body;

[0008] A filter element, the filter element is arranged inside the box, and the filter element comprises a fixing frame and a filter net, the filter net is arranged inside the fixing frame;

[0009] A heat exchange tube, wherein the heat exchange tube portion is arranged in the fixing frame, and the heat exchange tube is arranged between the filter screens.

[0010] Furthermore, the filter screen close to the heat exchange tube is a hollow structure.

[0011] Furthermore, the ash outlet hopper is arranged on both sides of the air inlet, and the upper part of the ash outlet is funnel-shaped.

[0012] Furthermore, the filter screen corresponding to the ash outlet is arranged tilted.

[0013] Furthermore, at least two heat exchange tubes are provided and located between the filter screens.

[0014] Technical effects and advantages of the utility model:

[0015] The utility model arranges one or more heat exchange tubes capable of performing heat exchange on the filter screen. When hot air enters from the air inlet, dust impurities in the gas can be filtered through the filter screen, and heat in the passing gas can be taken away by heat exchange light, thereby rationally utilizing excess heat. At the same time, a hollow filter screen is arranged on the heat exchange tube to enhance the heat exchange effect and avoid heat waste. At the same time, the filter screen located above the ash outlet is arranged at an angle. When the air supply is stopped, the filtered dust directly falls into the ash outlet, which is convenient for direct cleaning of the dust, thereby forming an integrated arrangement of waste heat treatment and dust filtering, saving installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the structure of the utility model from top view.

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-sectional structure along the AA direction.

[0020] Figure 4 This is a schematic diagram of the structure of the filter element of the utility model.

[0021] In the figure: 1, box body, 2, air inlet, 3, ash outlet, 4, heat exchange tube, 5, ash hopper, 6, filter element, 601, fixing frame, 602, filter screen. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Figure 1 It is a schematic diagram of the structure of the utility model. Figure 2 It is a schematic diagram of the structure of the utility model from top view. Figure 3 For this utility model Figure 2 Schematic diagram of the cross-sectional structure along the AA direction. Figure 4 This is a schematic diagram of the structure of the filter element of the utility model.

[0024] The scheme of this embodiment provides a dry waste gas treatment device, including a box body 1, a filter element 6 and a heat exchange tube 4, wherein the box body 1 has a box body 1 with upper and lower openings, and the lower opening of the box body 1 is provided with an air inlet 2 and an ash hopper 5 connected to the box body 1; the filter element 6 is arranged inside the box body 1, and the filter element 6 includes a fixed frame 601 and a filter screen 602, and the filter screen 602 is arranged in the fixed frame 601; the heat exchange tube 4 is partially arranged in the fixed frame 601, and the heat exchange tube 4 The filter screen 602 is arranged between the filter screens 602, and the filter screen 602 close to the heat exchange tube 4 is a hollow structure, which can better absorb and take away the heat. The ash hopper 5 is arranged on both sides of the air inlet 2, and the upper part of the ash outlet 3 is funnel-shaped. The filter screen 602 corresponding to the ash outlet 3 is arranged obliquely. When in use, the filter screen directly above the air inlet is replaced with a solid airtight plate. When the air is taken in, the gas moves to both sides to prevent the filtered dust from falling into the channel of the air inlet again and being unable to be discharged after repeated cycles.

[0025] It should be further explained that at least two heat exchange tubes 4 are provided and are located between the filter screens 602 , so that the excess heat in the gas can be utilized without affecting the gas filtration.

[0026] Working principle of this utility model:

[0027] When in use, the utility model arranges one or more heat exchange tubes 4 capable of heat exchange on the filter. When hot air enters from the air inlet 2, dust and impurities in the gas can be filtered through the filter 602, and the heat in the passing gas is taken away by the heat exchange light, so as to reasonably utilize the excess heat. At the same time, a hollow filter 602 is arranged on the heat exchange tube 4 to enhance the heat exchange effect and avoid heat waste. At the same time, the filter 602 located above the ash outlet 3 is arranged at an angle. When the air supply is stopped, the filtered dust directly falls into the ash outlet 3, so as to facilitate the direct cleaning of the dust.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dry waste gas treatment device, characterized in that: include, A box body (1), the box body (1) having upper and lower openings, and the lower opening of the box body (1) is provided with an air inlet (2) and an ash hopper (5) which are in communication with the box body (1); A filter element (6), the filter element (6) being arranged inside the box body (1), and the filter element (6) comprising a fixing frame (601) and a filter net (602), the filter net (602) being arranged inside the fixing frame (601); A heat exchange tube (4), wherein a portion of the heat exchange tube (4) is disposed in the fixing frame (601), and the heat exchange tube (4) is disposed between the filter screens (602).

2. A dry waste gas treatment device according to claim 1, characterized in that: The filter screen (602) close to the heat exchange tube (4) is a hollow structure.

3. A dry waste gas treatment device according to claim 1, characterized in that: The ash outlet hopper (5) is arranged on both sides of the air inlet (2), and the upper part of the ash outlet (3) is funnel-shaped.

4. A dry waste gas treatment device according to claim 3, characterized in that: The filter screen (602) corresponding to the ash outlet (3) is arranged tilted.

5. A dry waste gas treatment device according to claim 1, characterized in that: At least two heat exchange tubes (4) are provided and are located between the filter screens (602).

Images