A boiler air preheater

Abstract

The utility model discloses a kind of boiler air preheaters, belong to boiler air preheating technical field, to solve the mechanism lacking to clean the fin base under prior art boiler air preheater, dust and other particulate matters in flue gas are easily attached on the heat dissipation base, the heat conduction efficiency of fin needs to be promoted.Problems include main part, main part both ends side surface thread movable installation has side door, main part inside is equipped with fin, cleaning assembly is installed on side door, cleaning assembly is in main part inside, main part lower portion middle position is equipped with connecting portion.The boiler air preheater, by the setting of cleaning assembly, it is convenient to clean the dust of fin base, prevent dust and other particulate matters in flue gas from being easily attached on the heat dissipation base, prevent the heat conduction efficiency of fin from being reduced, improve practicality, and chute is set in box bottom, dust can also be prevented from entering chute to affect normal use of screw rod, ensure normal use.

Description

Technical Field

[0001] This utility model belongs to the field of boiler air preheating technology, and specifically relates to a boiler air preheater. Background Technology

[0002] An air preheater, also known simply as an air preheater, is a preheating device that improves the heat exchange performance of a boiler and reduces heat loss. The function of an air preheater is to transfer the heat carried by the flue gas discharged from the boiler tail flue to the air entering the boiler through heat sinks, preheating the air to a certain temperature.

[0003] When the flue gas discharged from the boiler tail flue comes into contact with the heat sink base (the heat sink includes the heat sink base and heat sink fins, where the heat sink base is in contact with the high-temperature flue gas), dust and other particulate matter in the flue gas easily adheres to the heat sink base, thereby reducing the heat transfer efficiency. Therefore, a technical measure is proposed to solve the problem that the existing boiler air preheater lacks a mechanism for cleaning the heat sink base, making it easy for dust and other particulate matter in the flue gas to adhere to the heat sink base, and the heat transfer efficiency of the heat sink needs to be improved. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a boiler air preheater that solves the problem that existing boiler air preheaters lack a mechanism for cleaning the heat sink base, making it easy for dust and other particulate matter in the flue gas to adhere to the heat sink base, and thus the heat transfer efficiency of the heat sink needs to be improved.

[0006] (2) Technical solution

[0007] To address the aforementioned technical problems, this utility model provides a boiler air preheater comprising a main body with side doors threadedly mounted on both ends of the main body. Heat sinks are installed inside the main body, and a cleaning component is mounted on each side door. The cleaning component is located inside the main body, and a connecting part is installed at the lower center of the main body, converging downwards. Thanks to the cleaning component, dust on the heat sink base is easily cleaned, preventing dust and other particulate matter in the flue gas from easily adhering to the heat sink base and reducing the heat transfer efficiency of the heat sink, thus improving practicality. Furthermore, the sliding groove located at the bottom of the housing also prevents dust from entering the groove and affecting the normal operation of the screw, ensuring normal use.

[0008] Furthermore, there are two sets of side doors: one set has an air inlet pipe installed through the upper end of the side door, and the other set has an air outlet pipe installed at the upper end of the side door.

[0009] Furthermore, an exhaust gas inlet pipe is installed through the lower end of the main body, and the exhaust gas inlet pipe is close to the air inlet pipe.

[0010] Furthermore, an exhaust pipe is installed through the lower end of the main body, and the exhaust pipe is close to the air exhaust pipe.

[0011] Furthermore, a vertical pipe is installed at the lower part of the connecting part, a sealing plate is slidably passed through the vertical pipe, and two sets of bolts are threaded through the sealing plate, the bolts being threadedly connected to the vertical pipe.

[0012] Furthermore, the cleaning component includes a housing, which is installed on the side of a set of side doors. A groove is provided in the middle of the lower surface of the housing. A screw is rotatably connected to the middle of the side of the housing. The screw is connected to a motor, which is fixedly installed on the outer surface of the side door. A movable plate is threadedly connected to the screw. The movable plate is L-shaped. A vertical rod is installed at the horizontal end of the movable plate. A scraper is installed at the upper end of the vertical rod. The scraper is inclined and tilted towards the heat sink base. The scraper contacts the heat sink base.

[0013] Furthermore, the movable plate is slidably adapted to the slide groove.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model features a side door, which allows for easy opening of the main body, facilitating the inspection and maintenance of the cleaning components and the removal of dust.

[0017] The cleaning components facilitate the removal of dust from the heatsink base, preventing dust and other particles from easily adhering to the base and reducing the heatsink's heat transfer efficiency, thus improving practicality. Furthermore, the sliding groove located at the bottom of the housing prevents dust from entering and affecting the screw's normal operation, ensuring proper functioning. The starting motor drives the screw to rotate, which in turn moves the moving plate along the sliding groove. This movement of the moving plate then moves the vertical rod, which in turn moves the scraper, which removes the dust from the heatsink base, completing the cleaning process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3 This is a schematic diagram of the internal structure of the main body;

[0022] Figure 4 To clean up the component structure diagram;

[0023] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0024] Figure 6 This is a schematic diagram of the cross-sectional structure of the box.

[0025] The labels in the attached diagram are as follows: 1. Main body; 2. Cleaning assembly; 3. Side door; 4. Air inlet pipe; 5. Exhaust gas inlet pipe; 6. Exhaust gas outlet pipe; 7. Air outlet pipe; 8. Connecting part; 9. Vertical pipe; 10. Sealing plate; 11. Bolt; 12. Heat sink; 201. Box body; 202. Screw; 203. Motor; 204. Scraper; 205. Vertical rod; 206. Moving plate; 207. Slide groove. Detailed Implementation

[0026] 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.

[0027] This specific embodiment is a boiler air preheater, and its structural schematic diagram is shown below. Figure 1 , Figure 2 , Figure 3As shown, the system includes a main body 1. Side doors 3 are threadedly installed on both ends of the main body 1. Heat sinks 12 are installed inside the main body 1. A cleaning assembly 2 is installed on the side doors 3, located inside the main body 1. A connecting part 8 is installed in the lower middle of the main body 1, converging downwards. There are two sets of side doors 3: one set has an air inlet pipe 4 installed through its upper end, and the other set has an air outlet pipe 7 installed through its upper end. A waste gas inlet pipe 5 is installed through its lower end of the main body 1, close to the air inlet pipe 4. A waste gas outlet pipe 6 is also installed through its lower end of the main body 1, close to the air outlet pipe 7. A vertical pipe 9 is installed below the connecting part 8, through which a sealing plate 10 slides. Two sets of bolts 11 are threaded through the sealing plate 10 and connected to the vertical pipe 9. In actual use, the air inlet pipe 4 is connected to the air inlet pipe, the air outlet pipe 7 and waste gas inlet pipe 5 are connected to the boiler, and the waste gas outlet pipe 6 is connected to the exhaust pipe. Subsequently, waste gas passes through... The exhaust gas enters the main body 1 through the exhaust pipe 5. The high-temperature exhaust gas then transfers heat to the upper part of the main body 1 via the heat sink 12 (the heat sink 12 operates on the principle of heat transfer, meaning heat transfer relies on a thermally conductive material and a heat transfer medium. The heat sink 12 itself is made of thermally conductive metal, transferring heat from the radiator or other heat dissipation devices to it, and transferring heat to the environment through its high surface area. Simultaneously, under appropriate speed, forced flow of gas through the heat sink 12 can accelerate heat transfer). This heats the air entering the upper part of the main body 1. The air then enters the boiler through the air exhaust pipe 7. When cleaning the base of the heat sink 12 is required, the cleaning assembly 2 is activated. The cleaned dust falls into the lower part of the main body 1. When there is a large amount of dust, a set of side doors 3 (near the exhaust pipe 6) are opened, and tools are used to sweep and scrape the dust into the connecting part 8, then into the vertical pipe 9. The sealing plate 10 is then opened to complete the dust cleaning.

[0028] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, the cleaning component 2 includes a housing 201, which is installed on the side of a set of side doors 3. A groove 207 is provided in the middle of the lower surface of the housing 201. A screw 202 is rotatably connected to the middle of the side of the housing 201. The screw 202 is connected to a motor 203, which is fixedly installed on the outer surface of the side door 3. A movable plate 206 is threadedly connected to the screw 202. The movable plate 206 is L-shaped, and a vertical rod 205 is installed at the horizontal end of the movable plate 206. A scraper 204 is installed at the upper end of the vertical rod 205. The scraper 204 is inclined and faces the base of the heat sink 12. The scraper 204 contacts the base of the heat sink 12. The moving plate 206 slides and adapts to the slide groove 207. The motor 203 is started, which drives the screw 202 to rotate. The rotation of the screw 202 drives the moving plate 206 to slide along the slide groove 207. The movement of the moving plate 206 drives the vertical rod 205 to move. The movement of the vertical rod 205 drives the scraper 204 to move. The movement of the scraper 204 scrapes off the dust from the base of the heat sink 12, completing the cleaning.

[0029] Working Principle: In actual use, the air inlet pipe 4 is connected to the intake pipe, the air outlet pipe 7 and the exhaust gas inlet pipe 5 are connected to the boiler, and the exhaust gas outlet pipe 6 is connected to the exhaust pipe. The exhaust gas then enters the main body 1 through the exhaust gas inlet pipe 5. The high-temperature exhaust gas then transfers heat to the upper part of the main body 1 through the heat sink 12. (The working principle of the heat sink 12 is based on the principle of heat transfer, that is, heat transfer must rely on thermally conductive materials and heat transfer media. The heat sink 12 itself is made of thermally conductive metal, transferring heat from the radiator or other heat dissipation devices to it, and transferring heat to the environment through its high surface area. Simultaneously, under appropriate speed conditions...) The air entering the upper part of the main body 1 is heated by the forced flow of gas through the heat sink 12 to accelerate heat transfer. The air then enters the boiler through the air exhaust pipe 7. When it is necessary to clean the base of the heat sink 12, the cleaning component 2 is activated to clean it. The cleaned dust falls into the lower part of the main body 1. When there is a lot of dust, a set of side doors 3 (near the exhaust pipe 6) is opened, and the dust is swept or scraped into the connecting part 8 with tools. Then it enters the vertical pipe 9, and the sealing plate 10 is opened to complete the cleaning of the dust. The side doors 3 make it easy to open the main body 1, which makes it easy to inspect the cleaning component 2 and clean the dust.

[0030] The cleaning component 2 works as follows: the motor 203 is started, which drives the screw 202 to rotate. The rotation of the screw 202 causes the moving plate 206 to slide along the slide groove 207. The movement of the moving plate 206 causes the vertical rod 205 to move, which in turn causes the scraper 204 to move. The scraper 204 scrapes off the dust from the base of the heat sink 12, thus completing the cleaning. The cleaning component 2 facilitates the cleaning of dust from the base of the heat sink 12, preventing dust and other particles in the flue gas from easily adhering to the heat sink base and reducing the heat transfer efficiency of the heat sink 12, thereby improving practicality. Furthermore, the slide groove 207 is located at the bottom of the box 201, which also prevents dust from entering the slide groove 207 and affecting the normal use of the screw 202, ensuring normal operation.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A boiler air preheater, comprising a main body (1), characterized in that, Side doors (3) are threadedly installed on both sides of the main body (1). Heat sinks (12) are installed inside the main body (1). A cleaning component (2) is installed on the side door (3). The cleaning component (2) is inside the main body (1). A connecting part (8) is installed in the middle of the lower part of the main body (1). The connecting part (8) converges downwards.

2. A boiler air preheater according to claim 1, characterized in that, The side door (3) has two sets. One set of the side door (3) has an air inlet pipe (4) installed through the upper end, and the other set of the side door (3) has an air outlet pipe (7) installed at the upper end.

3. A boiler air preheater according to claim 2, characterized in that, The lower end of the main body (1) is provided with an exhaust gas inlet pipe (5), and the exhaust gas inlet pipe (5) is close to the air inlet pipe (4).

4. A boiler air preheater according to claim 3, characterized in that, The lower end of the main body (1) is provided with an exhaust pipe (6), which is close to the air exhaust pipe (7).

5. A boiler air preheater according to claim 1, characterized in that, A vertical pipe (9) is installed at the lower part of the connecting part (8). A sealing plate (10) slides through the vertical pipe (9). Two sets of bolts (11) are threaded through the sealing plate (10). The bolts (11) are threadedly connected to the vertical pipe (9).

6. A boiler air preheater according to claim 1, characterized in that, The cleaning component (2) includes a box (201), which is installed on the side of a set of side doors (3). A groove (207) is provided in the middle of the lower surface of the box (201). A screw (202) is rotatably connected to the middle of the side of the box (201). A motor (203) is connected to the screw (202). The motor (203) is fixedly installed on the outer surface of the side door (3). A movable plate (206) is threadedly connected to the screw (202). The movable plate (206) is L-shaped. A vertical rod (205) is installed at the horizontal end of the movable plate (206). A scraper (204) is installed at the upper end of the vertical rod (205). The scraper (204) is inclined and tilted towards the heat sink (12) base. The scraper (204) contacts the heat sink (12) base.

7. A boiler air preheater according to claim 6, characterized in that, The movable plate (206) is slidably adapted to the slide groove (207).

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