Coal gas heater with quick-release filter function

Abstract

The utility model relates to the technical field of heater, especially relates to a gas heater with quick detachable filter function, including gas side header, flue gas side header and the baffle between both, both sides of gas side header are equipped with filter box, the first grating and second grating are provided in parallel in filter box, after the first grating and second grating top pass through filter box top wall, all are equipped with grating fixed lid, grating fixed lid is equipped with grating handle and at least two first fixed column, the fixed ring is equipped on first fixed column, and first fixed column and fixed ring are connected through screw thread, the outer wall of filter box is equipped with second fixed column correspondingly, and the hooking hooking recess is equipped on the other end of hooking piece and is matched with first fixed column, fix the grating through hooking piece, when needing to clean the grating, just loosen the fixed ring, then open hooking piece, and the grating handle is lifted upwards and can be taken out grating.

Description

Technical Field

[0001] This utility model relates to the field of heater technology, and in particular to a gas heater with a quick-release filtration function. Background Technology

[0002] The gas heater is mainly composed of a partition, an outer shell, and thousands of heat pipes welded together. The partition divides the outer shell into a flue gas side and a gas side that are not connected to each other, while the heat pipes are connected from top to bottom, which can transfer the heat of the flue gas to the gas, effectively reducing the heat loss of the flue gas and improving the thermal efficiency. Since the gas contains impurities and corrosive gases, it is easy to clog or corrode the heat exchange surface, so the gas needs to be filtered.

[0003] Utility model patent CN222438180U discloses a gas heater with anti-clogging and corrosion heating tube bundle. It involves installing a first threaded retaining ring and a second threaded retaining ring inside the tapered pipe at the right end of the gas-side header. The first threaded retaining ring has a first galvanized channel steel arranged horizontally inside, and the second threaded retaining ring has a second galvanized channel steel arranged horizontally inside. The second and first galvanized channel steels are arranged in a crisscross pattern, so that when gas passes through, it first impacts the first and second galvanized channel steels before passing through the gaps, adhering impurities in the gas to the galvanized channel steel, thus reducing impurities in the gas. However, after the above device is applied in the field, the first and second threaded retaining rings need to be frequently removed to clean the impurities on the surface of the galvanized channel steel; otherwise, the adsorption effect of the galvanized channel steel will be greatly reduced. Since the threaded retaining rings are located inside the tapered pipe, the tapered pipe needs to be disassembled before the threaded retaining rings can be removed. Therefore, there is a need for a gas heater that is easily disassembled and has a filtering function. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides a gas heater with a simple disassembly process and the ability to filter impurities in cold gas.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A gas heater with quick-release filtration function includes a gas-side header, a flue gas-side header, and a partition between the two. Filter boxes are provided on both sides of the gas-side header. A first grid and a second grid are arranged parallel to each other inside the filter box. Each of the first and second grids has a grid fixing cover after passing through the top wall of the filter box. The grid fixing cover has a grid handle and at least two first fixing posts. A fixing ring is provided on each first fixing post, and the first fixing post and the fixing ring are connected by threads. A second fixing post is correspondingly provided on the outer wall of the filter box. A hook lever is hinged to the second fixing post, and the other end of the hook lever has a hook groove that mates with the first fixing post.

[0007] The gas heater with quick-release filtration function described above has guide grooves on both the inner side wall and bottom wall of the filter box, and the first and second grilles move up and down along the guide grooves on both sides.

[0008] In the gas heater with quick-release filtration function described above, first partitions are installed at equal intervals on the first grid, and scraper fixing plates are provided on the outer sleeves of multiple first partitions. Scrapers are provided on both sides of the scraper fixing plates corresponding to the first partitions. The scrapers are inclined and their end faces near the first partitions abut against the surface of the first partitions.

[0009] The gas heater with quick-release filtration function described above has second partitions installed at equal intervals on the second grid, and the gaps between multiple second partitions correspond one-to-one with the gaps between two adjacent first partitions. The second grid is also equipped with a scraper fixing plate and a scraper.

[0010] In the gas heater with quick-release filtration function described above, both ends of the scraper fixing plate are provided with through holes, and a limiting rod is provided in the through holes. The upper ends of the first and second partitions are provided with limiting holes, which are located on the first and second partitions near the side wall of the filter box. One end of the limiting rod passes through the through hole and is located in the limiting hole.

[0011] The gas heater with quick-release filtration function described above has a threaded connection between the limiting rod, the through hole, and the limiting hole, and the limiting rod is provided with a handle.

[0012] The gas heater with quick-release filtration function described above has a sealing gasket on the side of the grille fixing cover near the filter box.

[0013] The gas heater with quick-release filtration function described above has a filter box at one end of the gas side header connected to the gas inlet pipe, and a filter box at the other end connected to the gas outlet pipe. The gas side header, filter box, gas inlet pipe and gas outlet pipe are all provided with flanges, and multiple bolts are inserted on the flanges. Each bolt is fitted with a nut through a thread. Sealing gaskets are installed at the connection points of the gas side header, filter box, gas inlet pipe and gas outlet pipe.

[0014] The beneficial effects of adopting the above technical solution are as follows:

[0015] This invention features filter boxes on both sides of the gas-side manifold. A first and second grid are inserted into the filter box from the top wall. The grids are then secured using a first fixing post, a fixing ring, a second fixing post, and a hook lever. To clean the grids, simply loosen the fixing ring, open the hook lever, and lift the grid handle to remove the grid. Guide grooves are provided on the inner and bottom walls of the filter box to guide the grid's vertical movement. Once the grid is in position, its bottom end is secured. Furthermore, to simplify the cleaning process, the first and second grids are equipped with a scraper fixing plate and a scraper. The scraper is angled, with its end face near the partition bar contacting the partition bar surface. The scraper fixing plate drives the scraper downwards, removing impurities adhering to the partition bar surface during the movement.

[0016] This invention filters impurities in cold gas through the partition bars on the grille. The grille disassembly process is simple, and the surface of the partition bars is easy to clean, reducing downtime for maintenance and thus improving production efficiency. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model (not drawn to scale);

[0019] Figure 2 for Figure 1 Enlarged view of part A in the middle (not drawn to scale);

[0020] Figure 3 This is a sectional view of the present invention (not drawn to scale);

[0021] Figure 4 This is a schematic diagram of the first grille structure of this utility model (not drawn to scale);

[0022] Figure 5 for Figure 4 Enlarged view of part B in the middle (not drawn to scale).

[0023] In the diagram: 1. Gas-side header; 2. Flue gas-side header; 3. Partition plate; 4. Filter box; 41. Second fixing post; 42. Hook lever; 43. Hook groove; 44. Guide groove; 5. First grille; 51. Grille fixing cover; 511. Sealing gasket; 52. Grille handle; 53. First fixing post; 54. Fixing ring; 55. First spacer; 56. Scraper fixing plate; 561. Scraper; 57. Through hole; 58. Limiting rod; 59. Limiting hole; 6. Second grille; 61. Second spacer; 7. Gas inlet pipe; 8. Gas outlet pipe; 9. Heat exchanger tube; 10. Flanged edge. Detailed Implementation

[0024] like Figure 1-5 As shown, this utility model includes a gas-side header 1, a flue gas-side header 2, and a partition 3 located between the two. Filter boxes 4 are provided on both sides of the gas-side header 1. A first grille 5 and a second grille 6 are arranged parallel to each other inside the filter box 4. The tops of the first grille 5 and the second grille 6, passing through the top wall of the filter box 4, are each provided with a grille fixing cover 51. The grille fixing cover 51 is provided with a grille handle 52 and at least two first fixing posts 53. A fixing ring 54 is provided on each of the first fixing posts 53. The first fixing posts 53 and the fixing rings 54 are connected by threads. A second fixing post is correspondingly provided on the outer wall of the filter box 4. 41. A hook lever 42 is hinged to the second fixing post 41. The other end of the hook lever 42 is provided with a hook groove 43 that cooperates with the first fixing post 53. By rotating the hook lever 42, the first fixing post 53 is located in the hook groove 43. Then, the fixing ring 54 is turned to move the fixing ring 54 downward until it presses against the hook lever 42 and keeps the hook lever 42 fixed. The first grid 5 and the second grid 6 are fixed by multiple hook levers 42. When it is necessary to clean the grid, simply loosen the fixing ring 54 and then open the hook lever 42 to remove the first grid 5 and the second grid 6.

[0025] like Figure 3 As shown, the inner sidewall and bottom wall of the filter box 4 are provided with guide grooves 44. When the first grid 5 and the second grid 6 are inserted into the filter box 4, the first grid 5 and the second grid 6 move downward along the guide grooves 44 on both sides until the bottom end enters the guide groove 44 on the bottom wall of the filter box 4.

[0026] like Figure 4 , 5 As shown, vertically arranged first partition bars 55 are installed at equal intervals on the first grid 5. A scraper fixing plate 56 is provided on the outer sleeve of the first partition bars 55. Scrapers 561 are provided on both sides of the scraper fixing plate 56 corresponding to the first partition bars 55. The scrapers 561 are inclined and their end face near the first partition bar abuts against the surface of the first partition bar. The scraper fixing plate 56 drives the scraper 561 to move downward, and during the movement, the scraper 561 removes the impurities adhering to the surface of the partition bar.

[0027] like Figure 3 As shown, the second grid 6 is equipped with vertically arranged second spacers 61 at equal intervals. The gaps between the multiple second spacers 61 and the gaps between the two adjacent first spacers 55 are installed one by one. The second grid 6 is also provided with a scraper fixing plate 56 and a scraper 561.

[0028] like Figure 5As shown, both ends of the scraper fixing plate 56 are provided with through holes 57, and a limiting rod 58 is provided in the through hole 57. The upper ends of the first partition 55 and the second partition 61 are provided with limiting holes 59. The limiting holes 59 are located on the first partition 55 and the second partition 61 near the side wall of the filter box 4. One end of the limiting rod 58 is passed through the through hole 57 and enters the limiting hole 59 to limit the scraper fixing plate 56 and fix the scraper fixing plate 56 at the upper end of the partition. When it is necessary to clean the grid, the limiting rod 58 is turned to remove it from the limiting hole 59.

[0029] The limiting rod 58, through hole 57 and limiting hole 59 of this utility model are threaded together, and the limiting rod 58 is provided with a handle.

[0030] like Figure 5 As shown, the grid fixing cover 51 is provided with a sealing gasket 511 on the side near the filter box 4 to ensure the airtightness of the filter box.

[0031] It should be noted that the multiple first partition bars 55 and multiple second partition bars 61 are staggered to completely block the projection direction of the gas-side header 1. The filter box 4 at one end of the gas-side header 1 is connected to the gas inlet pipe 7, and the filter box 4 at the other end is connected to the gas outlet pipe 8. Cold gas is introduced through the gas inlet pipe 7, and the gas outlet pipe 8 is connected to the gas burner inlet. One end of the flue gas-side header 2 is connected to the exhaust outlet of the gas burner. During normal use, cold gas is introduced from the gas inlet pipe 7. The gas first impacts the first partition bars 55 of the first grid 5, and then impacts the second partition bars 61 of the second grid 6 through the gaps between the multiple first partition bars 55. Finally, it enters the gas-side header 1 through the gaps between the multiple second partition bars 61. After passing through multiple heat exchange tubes 9, impurities first adhere to the first partition 55 and the second partition 61, reducing the adhesion of impurities on the multiple heat exchange tubes 9 and preventing blockage caused by reduced gas flow space in the gas-side header 1. This allows for more complete gas heating and also prevents corrosion of the heat exchange tubes 9, thereby improving the overall service life of the gas heater. The gas then passes through the first grid 5 and the second grid 6 set in the filter box 4 at the other end of the gas-side header 1 for further filtration, further improving the purity of the gas and extending the life of the gas burner. The heating medium flows through the multiple heat exchange tubes 9, and the high-temperature flue gas enters the flue gas-side header 2 to heat the heating medium flowing through the multiple heat exchange tubes 9, preheating the cold gas and improving the utilization rate of flue gas waste heat.

[0032] like Figure 1 , 3As shown, flanges 10 are provided on the gas-side header 1, filter box 4, gas inlet pipe 7, and gas outlet pipe 8. Multiple bolts are inserted into the flanges 10, and each bolt is fitted with a nut through a thread. Sealing gaskets are installed at the connection points of the gas-side header 1, filter box 4, gas inlet pipe 7, and gas outlet pipe 8 for disassembly and assembly of the equipment, facilitating internal maintenance of the gas-side header 1, filter box 4, gas inlet pipe 7, and gas outlet pipe 8. The sealing gaskets are used to ensure the sealing of the equipment connection points.

[0033] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this invention.

Claims

1. A gas heater with quick-release filtration function, comprising a gas-side header (1), a flue gas-side header (2), and a partition (3) located between the two, characterized in that: The gas side manifold (1) is provided with filter boxes (4) on both sides. The filter boxes (4) are provided with a first grid (5) and a second grid (6) arranged in parallel inside. The tops of the first grid (5) and the second grid (6) pass through the top wall of the filter box (4) and are provided with grid fixing covers (51). The grid fixing covers (51) are provided with grid handles (52) and at least two first fixing posts (53). The first fixing posts (53) are provided with fixing rings (54). The first fixing posts (53) and the fixing rings (54) are connected by threads. The outer wall of the filter box (4) is provided with a second fixing post (41). The second fixing post (41) is hinged with a hook lever (42). The other end of the hook lever (42) is provided with a hook groove (43) that cooperates with the first fixing post (53).

2. The gas heater with quick-release filtration function according to claim 1, characterized in that: The filter box (4) is provided with guide grooves (44) on both the inner side wall and the bottom wall. The first grid (5) and the second grid (6) move up and down along the guide grooves (44) on both sides.

3. The gas heater with quick-release filtration function according to claim 1 or 2, characterized in that: The first grid (5) is provided with first partition bars (55) installed at equal intervals. Multiple first partition bars (55) are covered with scraper fixing plates (56). Scrapers (561) are provided on both sides of the scraper fixing plate (56) corresponding to the first partition bars (55). The scrapers (561) are inclined and their end faces near the first partition bars (55) abut against the surface of the first partition bars (55).

4. The gas heater with quick-release filtration function according to claim 3, characterized in that: The second grid (6) is provided with second spacers (61) installed at equal intervals. The gaps between the multiple second spacers (61) and the two adjacent first spacers (55) are installed one by one. The second grid (6) is also provided with a scraper fixing plate (56) and a scraper (561).

5. The gas heater with quick-release filtration function according to claim 4, characterized in that: Both ends of the scraper fixing plate (56) are provided with through holes (57), and a limiting rod (58) is provided in the through hole (57). The upper ends of the first partition (55) and the second partition (61) are provided with limiting holes (59). The limiting holes (59) are located on the first partition (55) and the second partition (61) near the side wall of the filter box (4). One end of the limiting rod (58) passes through the through hole (57) and is located in the limiting hole (59).

6. The gas heater with quick-release filtration function according to claim 5, characterized in that: The limiting rod (58), through hole (57) and limiting hole (59) are threaded together, and the limiting rod (58) is provided with a handle.

7. The gas heater with quick-release filtration function according to claim 1, characterized in that: The grid fixing cover (51) is provided with a sealing gasket (511) on the side near the filter box (4).

8. The gas heater with quick-release filtration function according to claim 1, characterized in that: The filter box (4) at one end of the gas side header (1) is connected to the gas inlet pipe (7), and the filter box (4) at the other end is connected to the gas outlet pipe (8). The gas side header (1), filter box (4), gas inlet pipe (7) and gas outlet pipe (8) are all provided with flanges (10). Multiple bolts are inserted on the flanges (10), and each bolt is fitted with a nut through a thread. Sealing gaskets are installed at the connection of the gas side header (1), filter box (4), gas inlet pipe (7) and gas outlet pipe (8).

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