Needled felt surface powder spraying device

Abstract

The utility model discloses a needled felt surface powder spraying device which comprises a bottom box body, an opening is formed in the side wall of the bottom box body, a large round roller is installed in an inner cavity of the bottom box body, a needled felt is wound on the outer wall of the large round roller, a top box body is connected to the upper surface of the bottom box body through a flange, and a spray gun head is arranged on the upper surface of a partition plate. The side wall of the spray gun head is fixedly connected with an inner cavity of the top box body, a through hole is formed in the center of the top of the top box body, and the through hole is in a long strip shape. When the needled felt is subjected to coating processing, the PTFE emulsion and the thickening agent are mixed firstly, the needled felt is soaked in the mixed emulsion firstly, then the external redundant mixed emulsion is scraped off, and then the micro-powder granular denitration agent is sprayed through the spray gun head, so that the surface of the needled felt is uniformly coated with the denitration agent; according to the utility model, the denitration agent can be uniformly coated on the surface of the needled felt through the spraying of the spray gun head, so that the manual coating time and difficulty are reduced, the processing efficiency is improved, and the durability and adaptability of the needled felt are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of needle felt processing, and specifically relates to a needle felt surface powder spraying device. Background Art

[0002] When the needle felt is processed, the denitrifier needs to be solidified on the surface of the needle felt. Currently, the surface coating method is used. It is necessary to mix PTFE emulsion, thickener and denitrifier into a yogurt-like form, and then apply it to the surface of the needle felt. This process will inevitably involve the PTFE emulsion being solidified and then coating the denitrifier. This prevents the denitrifier from being exposed to the outside in a large area, and it cannot come into contact with a large amount of nitrogen oxides in the flue gas during operation. If the coating process is uneven, the coating in some areas will be thin or missing, which will affect the performance of the needle felt. The unevenness will also cause local failure of the coating, requiring the needle felt to be reprocessed or replaced, wasting time and materials, and requiring re-coating or replacement of the needle felt, which will also increase production costs and maintenance time. Therefore, we propose a needle felt surface powder spraying device. Utility Model Content

[0003] The utility model aims to provide a needle felt surface powder spraying device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a needle felt surface powder spraying device, comprising a bottom box body, the side wall of the bottom box body is provided with an opening, the inner cavity of the bottom box body is installed with a large round roller, the outer wall of the large round roller is wrapped with needle felt, the upper surface flange of the bottom box body is connected to a top box body, the inner cavity of the top box body is symmetrically fixedly connected with partitions, the inner side walls of the two partitions are gap-matched with the side walls of the needle felt, the upper surface of the partition is provided with a spray gun head, the side wall of the spray gun head is fixedly connected to the inner cavity of the top box body, and a through hole is opened at the top center of the top box body, and the shape of the through hole is a long strip.

[0005] Preferably, an inner air duct is fixedly connected to the top of the inner wall of the top box body, an air inlet head is fixedly connected to the lower surface of the inner air duct, an outer air duct is fixedly connected to the other side of the inner air duct, a concave base is fitted on the outer wall of the outer air duct, a support rod is fixedly connected to the lower surface of the concave base, and the other end of the support rod is fixedly connected to the upper surface of the top box body.

[0006] Preferably, a scraper is symmetrically fixedly connected to the inner wall of the bottom box, the inner side walls of the two scrapers are in contact with the side wall of the needle felt, and the scraper is in the shape of a triangular prism with rounded corners.

[0007] Preferably, a feed pipe is fixedly connected to one symmetrical side of the opening of the bottom box body.

[0008] Preferably, a small round roller is installed at the opening of the bottom box, and the side wall of the small round roller is in contact with the side wall of the needle felt.

[0009] Preferably, the inner corners of the two partitions are rounded.

[0010] Compared with the prior art, the utility model has the following beneficial effects: when the needle felt is coated, the PTFE emulsion and the thickener are first mixed, the needle felt is first immersed in the mixed emulsion, and then the excess mixed emulsion on the outside is scraped off to make the outer emulsion of the needle felt evenly coated, and then the micro-powder granular denitrification agent is sprayed through the spray gun head to make the denitrification agent evenly coated on the surface of the needle felt, and the denitrification agent is firmly adhered to the surface of the needle felt by relying on the emulsion that is evenly coated on the surface of the needle felt in the early stage to play a bonding role, so as to ensure that the surface of the denitrification agent particles is exposed to the air in a large area, and the denitrification agent particles are exposed to the air in the later stage. When working, it can fully contact with the nitrogen oxides in the industrial flue gas to be treated, adsorb and intercept them, and improve the denitrification efficiency. This design can avoid the previous method of only relying on mixing the denitrifier with the emulsion and then coating the surface of the needle-punched felt. This method causes a certain amount of denitrifier to be immersed in the emulsion and cannot be exposed to the air, and cannot directly participate in the denitrification work, which greatly reduces the denitrification efficiency. In the utility model, the denitrifier can be evenly coated on the surface of the needle-punched felt through the spray of the spray gun head, which reduces the time and difficulty of manual coating, improves processing efficiency, and improves its durability and adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 for Figure 1 Structural details of the middle and inner air duct;

[0013] Figure 3 for Figure 1 A three-dimensional cutaway view of the midsole box and the top box;

[0014] Figure 4 for Figure 3 3D detail of the center partition;

[0015] Figure 5 for Figure 3 3D detail of the middle scraper;

[0016] In the figure: 1. bottom box; 2. large round roller; 3. small round roller; 4. top box; 5. partition; 6. spray gun head; 7. inner air duct; 8. air inlet head; 9. outer air duct; 10. concave base; 11. support rod; 12. scraper; 13. feed pipe. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-5 The utility model provides: a needle felt surface powder spraying device, comprising a bottom box body 1, the side wall of the bottom box body 1 is provided with an opening, the inner cavity of the bottom box body 1 is installed with a large round roller 2, the outer wall of the large round roller 2 is wrapped with needle felt, the upper surface flange of the bottom box body 1 is connected with a top box body 4, the inner cavity of the top box body 4 is symmetrically fixedly connected with a partition 5, the inner side walls of the two partitions 5 are gap-matched with the side walls of the needle felt, the upper surface of the partition 5 is provided with a spray gun head 6, the side wall of the spray gun head 6 is fixedly connected to the inner cavity of the top box body 4, and a through hole is opened at the top center of the top box body 4, and the shape of the through hole is a long strip.

[0019] When the needle felt is coated, the PTFE emulsion and the thickener are first mixed, and the thickener is used to make the PTFE emulsion viscous, so that the whole is yogurt-like, which is easier to coat, and then poured into the bottom box 1. An opening is provided on one side of the bottom box 1, and the needle felt enters from the opening and is wound around the outer wall of the large round roller 2. The needle felt is immersed in the mixed emulsion through the large round roller 2. The other end of the needle felt is connected to other processing equipment, and the large round roller 2 rotates to move the needle felt, and the needle felt covered with the mixed emulsion enters the top box 4. The top box body 4 and the bottom box body 1 are separately arranged and fixed by a flange. When the needle felt moves, it will fit with the internal partition 5 of the top box body 4. The partition 5 is symmetrically arranged with a gap in the center. When the needle felt passes through, the excess mixed emulsion on the outside is scraped off to evenly coat the emulsion on the outside of the needle felt. Then, the micro-powder granular denitrifier is sprayed through the spray gun head 6 to evenly coat the denitrifier on the surface of the needle felt, so that the mixed emulsion cannot be completely covered by solidification, preventing the denitrifier from being exposed to the outside over a large area and avoiding contact with nitrogen oxides during subsequent processing.

[0020] An inner air duct 7 is fixedly connected to the top of the inner wall of the top box body 4, an air inlet head 8 is fixedly connected to the lower surface of the inner air duct 7, an outer air duct 9 is fixedly connected to the other side of the inner air duct 7, a concave base 10 is fitted on the outer wall of the outer air duct 9, a support rod 11 is fixedly connected to the lower surface of the concave base 10, and the other end of the support rod 11 is fixedly connected to the upper surface of the top box body 4. The outer air duct 9 is connected to the exhaust device, and is connected to the inner air duct 7. When the exhaust device is started, excess denitrification agent inside is extracted through the air inlet head 8, and the inside of the top box body 4 can be cleaned regularly to reduce the consumption of denitrification agent.

[0021] The inner wall of the bottom box body 1 is symmetrically fixedly connected with a scraper 12, and the inner walls of the two scrapers 12 are in contact with the side walls of the needle-punched felt. The scraper 12 is in the shape of a triangular prism with rounded corners. By arranging the scraper 12 at the bottom of the partition 5, the scraper 12 assists the partition 5 in scraping off the mixed emulsion, so that the mixed emulsion on the surface of the needle-punched felt is more uniform, which is convenient for the subsequent powder spraying of the denitrification agent.

[0022] A feeding pipe 13 is fixedly connected to one symmetrical side of the opening of the bottom box body 1. By providing the feeding pipe 13, it is more convenient when the bottom box body 1 needs to add mixed emulsion.

[0023] A small round roller 3 is installed at the opening of the bottom box body 1, and the side wall of the small round roller 3 fits with the side wall of the needle felt. The small round roller 3 prevents the needle felt from being worn against the corners when entering the bottom box body 1.

[0024] The inner corners of the two partitions 5 are rounded.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A needle felt surface powder spraying device, characterized in that: The invention comprises a bottom box body (1), the side wall of which is provided with an opening, the inner cavity of the bottom box body (1) is provided with a large round roller (2), the outer wall of the large round roller (2) is wound with a needle-punched felt, the upper surface of the bottom box body (1) is flange-connected to a top box body (4), the inner cavity of the top box body (4) is symmetrically fixedly connected with a partition (5), the inner side walls of the two partitions (5) are gap-matched with the side walls of the needle-punched felt, the upper surface of the partition (5) is provided with a spray gun head (6), the side wall of the spray gun head (6) is fixedly connected to the inner cavity of the top box body (4), and a through hole is opened at the top center of the top box body (4), and the through hole is in the shape of a long strip.

2. A needle felt surface powder spraying device according to claim 1, characterized in that: An inner air duct (7) is fixedly connected to the top of the inner wall of the top box body (4), an air inlet head (8) is fixedly connected to the lower surface of the inner air duct (7), an outer air duct (9) is fixedly connected to the other side of the inner air duct (7), a concave base (10) is fitted to the outer wall of the outer air duct (9), a support rod (11) is fixedly connected to the lower surface of the concave base (10), and the other end of the support rod (11) is fixedly connected to the upper surface of the top box body (4).

3. The needle felt surface powder spraying device according to claim 1, characterized in that: The inner wall of the bottom box (1) is symmetrically fixedly connected with a scraper (12), the inner side walls of the two scrapers (12) are in contact with the side wall of the needle felt, and the scraper (12) is in the shape of a triangular prism with rounded corners.

4. The needle felt surface powder spraying device according to claim 1, characterized in that: A feed pipe (13) is fixedly connected to one symmetrical side of the opening of the bottom box (1).

5. The needle felt surface powder spraying device according to claim 1, characterized in that: A small round roller (3) is installed at the opening of the bottom box (1), and the side wall of the small round roller (3) is in contact with the side wall of the needle felt.

6. The needle felt surface powder spraying device according to claim 1, characterized in that: The inner corners of the two partitions (5) are rounded.

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