Air preheater for boiler

Abstract

The utility model discloses an air preheater for a boiler, which relates to the technical field of air preheating and comprises a gas collecting bin, a first fan and a second fan, the first fan and the second fan are fixedly arranged on the side wall of the gas collecting bin through a first mounting frame and a second mounting frame respectively, a first filter plate is arranged on the inner wall of the gas collecting bin, and a second filter plate is arranged on the inner wall of the gas collecting bin. And a cleaning brush is attached to the bottom of the first filter plate. Through the arrangement of the first draught fan, the second draught fan and the cleaning brush, the first draught fan can smoothly suck hot air into the air collecting bin, the cleaning brush can be driven by the transmission mechanism to be attached to the first filter plate to rotate, and therefore the hot air can be filtered, and the hot air filtering effect can be improved; and the filtered hot air is smoothly conveyed into the hollow plate and the multiple hot air pipes through the second fan, so that dust and impurities can be prevented from polluting the pipeline, the use efficiency of the hot air is improved, and the heating effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air preheating, in particular to an air preheater for a boiler. Background Art

[0002] The air preheater, also referred to as an air preheater, is a preheating device that improves the heat exchange performance of the boiler and reduces heat loss. The function of the air preheater is to transfer the heat carried in the flue gas discharged from the tail flue of the boiler to the air before entering the boiler through the heat sink, and preheat the air to a certain temperature.

[0003] After searching, a boiler air preheater with publication number CN212961700U is found, which includes a support base, the left and right sides of the top of the support base are fixedly connected with external brackets, the top of the support base is fixedly connected with a power box, a wind power mechanism is arranged inside the power box, the top of the power box is movably connected with an air preheater body, and the wind power mechanism includes an air inlet fan and an air outlet fan.

[0004] However, the existing air preheater for boilers has certain drawbacks when in use. Although the device can smoothly discharge the hot air through the air inlet and outlet, the filter mechanism cannot be automatically cleaned. The user needs to disassemble it for cleaning, which is not only time-consuming and labor-intensive, but also reduces the hot air passing rate and is difficult to improve the heating effect and heating efficiency. Utility Model Content

[0005] In view of the above problems existing in the existing air preheater for boiler, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide an air preheater for a boiler, which solves the problem that although the device can smoothly discharge the hot air through the air inlet and outlet, the filtering mechanism cannot be automatically cleaned and the user needs to disassemble it for cleaning, which is not only time-consuming and labor-intensive, but also reduces the passing rate of the hot air and makes it difficult to improve the heating effect and heating efficiency.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An air preheater for a boiler comprises an air collecting bin, a first fan and a second fan, wherein the first fan and the second fan are fixedly arranged on the side wall of the air collecting bin by means of a first mounting frame and a second mounting frame respectively, an air outlet end of the first fan passes through the interior of the air collecting bin and is fixedly connected to the air collecting bin, an air inlet end of the second fan passes through the interior of the air collecting bin and is fixedly connected to the air collecting bin, a first filter plate is arranged on the inner wall of the air collecting bin, a cleaning brush is fitted on the bottom of the first filter plate, a transmission mechanism is arranged inside the air collecting bin, the cleaning brush matches the transmission mechanism, a hollow plate is fixedly arranged on the top of the air collecting bin by means of a plurality of first fixing rods, a plurality of hot air pipes are fixedly sleeved on the side wall of the hollow plate

[0009] Preferably, the transmission mechanism includes a duct, a rotating rod and a wind wheel, the air outlet end of the first fan is fixedly connected to the duct, the rotating rod is rotatably arranged on the inner wall of the air collecting bin, the wind wheel is fixedly sleeved on the rod wall of the rotating rod, and one end of the duct is arranged on one side of the wind wheel and matches the wind wheel.

[0010] Preferably, a fixed box is fixedly provided on the inner wall of the air collecting bin via a plurality of second fixed rods, one end of the conduit passes through the interior of the fixed box and is fixedly connected to the fixed box, the rod wall of the rotating rod passes through the fixed box and is movably connected to the fixed box, and the wind wheel is arranged inside the fixed box.

[0011] Preferably, a second filter plate is provided on the inner wall of the hollow plate, an air outlet of the second fan is provided below the second filter plate, and each of the hot air pipes is provided above the second filter plate.

[0012] Preferably, the side wall of the gas collecting bin is movably connected with a plurality of first bolts, and the side wall of the hollow plate is movably connected with a plurality of second bolts, the other end of each of the first bolts is threadedly connected to the side wall of the first filter plate, and the other end of each of the second bolts is threadedly connected to the side wall of the second filter plate.

[0013] Preferably, a plurality of air outlet holes are provided on the side wall of the fixing box.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. The utility model, through the provision of the first fan, the second fan and the cleaning brush, the first fan can smoothly draw the hot air into the interior of the air collecting bin, and the transmission mechanism can drive the cleaning brush to rotate in contact with the first filter plate, thereby not only filtering the hot air, but also improving the filtering effect of the hot air. The filtered hot air is smoothly transported to the interior of the hollow plate and multiple hot air pipes through the second fan, thereby not only preventing dust and impurities from contaminating the pipes, but also improving the use efficiency of the hot air and the heating effect.

[0016] 2. The utility model starts the first fan by setting up a transmission mechanism, which includes a conduit, a rotating rod and a wind wheel. The output shaft of the first fan is fixedly connected to the conduit. The conduit is arranged on one side of the wind wheel and matches the wind wheel, so that the wind wheel can rotate. When the wind wheel rotates, it can drive the rotating rod and the cleaning brush to rotate synchronously, so that the cleaning brush can smoothly brush the bottom of the first filter plate, thereby accelerating the filtering effect of the hot air, and also accelerating the use efficiency of the hot air, and improving the heating effect.

[0017] 3. The utility model, through the setting of the fixed box, the wind wheel is set inside the fixed box, the fixed box can limit the hot air sprayed from the duct, reduce the diffusion degree of the hot air, ensure that a large amount of hot air can smoothly act on one side of the wind wheel, and ensure that the wind wheel can rotate smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is the front view of the utility model;

[0020] Figure 2 For the utility model Figure 1 A schematic cross-sectional structure diagram of ;

[0021] Figure 3 For the utility model Figure 2 A schematic diagram of the top cross-sectional structure of a fixed box.

[0022] Description of reference numerals:

[0023] 1. Gas collecting bin; 2. First fan; 3. Second fan; 4. First filter plate; 5. Cleaning brush; 6. Hollow plate; 7. Hot air pipe; 8. Conduit; 9. Rotating rod; 10. Wind wheel; 11. Fixed box; 12. Second filter plate; 13. First bolt; 14. Second bolt. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The utility model embodiment discloses an air preheater for a boiler.

[0026] The utility model provides Figure 1-2An air preheater for a boiler is shown, comprising an air collecting bin 1, a first fan 2 and a second fan 3. The first fan 2 and the second fan 3 are fixedly arranged on the side walls of the air collecting bin 1 by means of a first mounting frame and a second mounting frame respectively. The air outlet end of the first fan 2 passes through the interior of the air collecting bin 1 and is fixedly connected to the air collecting bin 1. The air inlet end of the second fan 3 passes through the interior of the air collecting bin 1 and is fixedly connected to the air collecting bin 1. A first filter plate 4 is arranged on the inner wall of the air collecting bin 1. A cleaning brush 5 is fitted on the bottom of the first filter plate 4. A transmission mechanism is arranged inside the air collecting bin 1, and the cleaning brush 5 matches the transmission mechanism. A hollow plate 6 is fixedly arranged on the top of the air collecting bin 1 by means of a plurality of first fixing rods. A plurality of hot air pipes 7 are fixedly sleeved on the side walls of the hollow plate 6.

[0027] In order to accelerate the filtering effect of hot air, the use efficiency of hot air is also accelerated, and the heating effect is improved. Figure 1-3 As shown, the transmission mechanism includes a duct 8, a rotating rod 9 and a wind wheel 10. The air outlet end of the first fan 2 is fixedly connected to the duct 8, the rotating rod 9 is rotatably arranged on the inner wall of the air collecting bin 1, the wind wheel 10 is fixedly sleeved on the rod wall of the rotating rod 9, and one end of the duct 8 is arranged on one side of the wind wheel 10 and matches the wind wheel 10.

[0028] In order to reduce the diffusion of hot air, ensure that a large amount of hot air can smoothly act on one side of the wind wheel 10, and ensure that the wind wheel 10 can rotate smoothly, as shown in FIG. Figure 1-3 As shown, the inner wall of the air collecting bin 1 is fixedly provided with a fixed box 11 by a plurality of second fixed rods, one end of the conduit 8 penetrates into the interior of the fixed box 11 and is fixedly connected to the fixed box 11, the rod wall of the rotating rod 9 penetrates the fixed box 11 and is movably connected to the fixed box 11, and the wind wheel 10 is arranged inside the fixed box 11.

[0029] In order to filter the hot air for the second time and further improve the heating effect of the hot air, Figure 1-2 As shown, the inner wall of the hollow plate 6 is provided with a second filter plate 12 , the air outlet of the second fan 3 is arranged below the second filter plate 12 , and each hot air pipe 7 is arranged above the second filter plate 12 .

[0030] In order to be able to install and remove the first filter plate 4 and the second filter plate 12, as shown in FIG. Figure 1-2 As shown, the side wall of the gas collecting bin 1 is movably connected with a plurality of first bolts 13, and the side wall of the hollow plate 6 is movably connected with a plurality of second bolts 14. The other end of each first bolt 13 is threadedly sleeved on the side wall of the first filter plate 4, and the other end of each second bolt 14 is threadedly sleeved on the side wall of the second filter plate 12.

[0031] Finally, in order to smoothly discharge the hot gas discharged from the conduit 8, Figure 2-3 As shown, the side wall of the fixing box 11 is provided with a plurality of air outlet holes.

[0032] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An air preheater for a boiler, comprising an air collecting bin (1), a first fan (2) and a second fan (3), characterized in that: The first fan (2) and the second fan (3) are fixedly arranged on the side wall of the air collecting bin (1) by means of a first mounting frame and a second mounting frame respectively; the air outlet end of the first fan (2) penetrates into the interior of the air collecting bin (1) and is fixedly connected to the air collecting bin (1); the air inlet end of the second fan (3) penetrates into the interior of the air collecting bin (1) and is fixedly connected to the air collecting bin (1); the inner wall of the air collecting bin (1) is provided with a first filter plate (4); a cleaning brush (5) is fitted on the bottom of the first filter plate (4); a transmission mechanism is arranged inside the air collecting bin (1); the cleaning brush (5) matches the transmission mechanism; a hollow plate (6) is fixedly arranged on the top of the air collecting bin (1) by means of a plurality of first fixing rods; a plurality of hot air pipes (7) are fixedly sleeved on the side wall of the hollow plate (6).

2. The air preheater for a boiler according to claim 1, characterized in that: The transmission mechanism comprises a duct (8), a rotating rod (9) and a wind wheel (10); the air outlet end of the first fan (2) is fixedly connected to the duct (8); the rotating rod (9) is rotatably arranged on the inner wall of the air collecting bin (1); the wind wheel (10) is fixedly sleeved on the rod wall of the rotating rod (9); one end of the duct (8) is arranged on one side of the wind wheel (10) and matches the wind wheel (10).

3. The air preheater for a boiler according to claim 2, characterized in that: The inner wall of the gas collecting bin (1) is fixedly provided with a fixed box (11) via a plurality of second fixed rods; one end of the conduit (8) penetrates into the interior of the fixed box (11) and is fixedly connected to the fixed box (11); the rod wall of the rotating rod (9) penetrates the fixed box (11) and is movably sleeved with the fixed box (11); and the wind wheel (10) is arranged inside the fixed box (11).

4. The air preheater for a boiler according to claim 1, characterized in that: The inner wall of the hollow plate (6) is provided with a second filter plate (12), the air outlet end of the second fan (3) is arranged below the second filter plate (12), and each of the hot air pipes (7) is arranged above the second filter plate (12).

5. The air preheater for a boiler according to claim 1, characterized in that: The side wall of the gas collecting bin (1) is movably connected with a plurality of first bolts (13), and the side wall of the hollow plate (6) is movably connected with a plurality of second bolts (14), the other end of each of the first bolts (13) is threadedly sleeved on the side wall of the first filter plate (4), and the other end of each of the second bolts (14) is threadedly sleeved on the side wall of the second filter plate (12).

6. The air preheater for a boiler according to claim 3, characterized in that: The side wall of the fixed box (11) is provided with a plurality of air outlet holes.

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