Steam boiler

Abstract

The utility model belongs to the technical field of boilers, particularly relates to a steam boiler, and aims to solve the problems that an existing steam boiler is inconvenient to clean, a waste gas treatment device can be blocked by direct waste gas treatment, and follow-up treatment is affected. According to the utility model, by adopting the design of the wave-shaped outer wall of the water tank, the contact area with flue gas is obviously increased, the heat exchange efficiency is improved, and meanwhile, the built-in cleaning mechanism can automatically clean the inner wall and the outer wall of the water tank, so that the accumulation of incrustation and dirt is effectively prevented, and the service life of the water tank is prolonged. In addition, a filtering mechanism and a collecting piece are arranged in the smoke discharging barrel, large impurities in smoke can be effectively filtered out and collected, a filtering plate can be cleaned, and the maintenance efficiency and the environment-friendly performance of the boiler are further improved.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, and in particular to a steam boiler. Background Technology

[0002] A steam boiler is an energy conversion device. The energy input into a steam boiler can be in the form of chemical energy from fuel, electrical energy, or high-temperature flue gas heat energy. After being converted by the boiler, it outputs steam, high-temperature water, or organic heat carrier with a certain amount of heat energy.

[0003] A search revealed that utility model CN221811326U discloses a biomass steam boiler, but this boiler has the following drawbacks during use:

[0004] During use, a large amount of boiler ash will adhere to the outer wall of the vaporization chamber. If it is not cleaned for a long time, it will affect the heat transfer. Cleaning requires people to enter the boiler, which makes cleaning inconvenient.

[0005] Furthermore, the combustion of biomass generates a large amount of particulate dust, which can clog the waste gas treatment device if directly treated as waste gas, affecting subsequent treatment. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies, such as inconvenient cleaning and the potential for blockage of waste gas treatment devices by direct waste gas treatment, which would affect subsequent treatment. Therefore, this invention proposes a steam boiler.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A steam boiler includes a boiler body, a burner connected to one side of the boiler body, and symmetrically arranged water inlet pipes and exhaust pipes fixed on the outer wall of the boiler body. A water tank located inside the boiler body is connected to one end of the water inlet pipes and exhaust pipes that are close to each other for holding water.

[0009] The outer wall of the water tank is corrugated to increase the contact area with the flue gas;

[0010] A flue, which is connected to and installed at the top of the furnace body, is used to exhaust flue gas;

[0011] A cleaning mechanism, installed on the water tank, is used to clean the inner wall of the water tank.

[0012] A filtration mechanism is installed inside the flue to filter impurities in the flue gas. The flue is also equipped with a collection device for collecting the filtered impurities.

[0013] In one possible design, the cleaning mechanism includes a rotating shaft that rotates through the top of the water tank, a motor that is fixedly mounted on the top of the furnace body, the top end of the rotating shaft that passes through the top of the furnace body and is fixedly connected to the output end of the motor, and a first scraper located inside the water tank that is fixedly mounted on the outer wall of the rotating shaft for cleaning the inner wall of the water tank.

[0014] In one possible design, a second scraper located on the outer wall of the bottom end of the rotating shaft is fixedly provided for cleaning the outer wall of the water tank.

[0015] In one possible design, a drain pipe is fixedly installed through the outer wall of the furnace body, a groove is provided at the bottom end of the rotating shaft, and multiple drain holes communicating with the groove are opened on the outer wall of the rotating shaft. The top end of the drain pipe is rotatably located at the bottom end of the rotating shaft for discharging sewage and scale.

[0016] In one possible design, the filtration mechanism includes a bend on the exhaust stack, one end of which is sealed, and an extension tube is connected to the middle of the bend. A filter plate corresponding to the extension tube is fixed on the inner wall of the bend for filtering impurities.

[0017] In one possible design, the collecting component includes a collecting cylinder threaded onto the inner wall of one end of the bent portion, with a blocking plate fixedly provided at the bottom end of the collecting cylinder. One side of the blocking plate abuts against the bent portion to limit the movement of the collecting cylinder.

[0018] In one possible design, a connecting shaft is fixedly provided on the top of the blocking plate, and the outer wall of the connecting shaft is provided with multiple brushes for cleaning the filter plate, which drive the connecting shaft to rotate while the collection cylinder is turned.

[0019] In one possible design, both the first scraper and the arc groove are L-shaped, and the sides of the first scraper and the arc groove that are close to each other are provided with arc grooves that are adapted to the outer wall of the water tank.

[0020] Beneficial effects:

[0021] In this utility model, the steam boiler, by designing a corrugated outer wall of the water tank, greatly increases the contact area with the flue gas, allowing the heat in the flue gas to be transferred more fully to the water in the water tank, thereby improving the heat exchange efficiency and making the steam boiler heat up faster and more energy efficient.

[0022] In this utility model, the steam boiler, through a cleaning mechanism including a motor-driven rotating shaft and a first scraper and a second scraper thereon, can regularly clean the inner and outer walls of the water tank, effectively preventing the accumulation of scale and dirt, extending the service life of the boiler. At the same time, the design of the drain pipe and drain hole also facilitates the discharge of sewage, further simplifying the cleaning work.

[0023] In this utility model, a steam boiler is provided with a filter mechanism in the flue gas stack. The filter plate filters out larger impurities in the flue gas, and a collection device is provided to collect the filtered impurities. This effectively reduces the emission of pollutants in the flue gas and improves the environmental protection standards of flue gas emissions. The collection device adopts a threaded connection, which is convenient for disassembly and replacement. At the same time, by designing a connecting shaft with a brush, the filter plate can be cleaned while the collection cylinder is turned, which not only facilitates the handling of impurities but also extends the service life of the filter plate.

[0024] In this invention, the corrugated outer wall design of the water tank significantly increases the contact area with flue gas, improving heat exchange efficiency. Simultaneously, the built-in cleaning mechanism automatically cleans the inner and outer walls of the water tank, effectively preventing the accumulation of scale and dirt and extending the boiler's service life. Furthermore, the filter mechanism and collector inside the flue gas stack effectively filter and collect larger impurities in the flue gas, reducing environmental pollution from flue gas emissions. In particular, the brush design in the cleaning mechanism allows for cleaning of the filter plates while removing impurities, further improving the boiler's maintenance efficiency and environmental performance. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of a steam boiler proposed in this utility model;

[0026] Figure 2 This is a cross-sectional structural diagram of a steam boiler proposed in this utility model;

[0027] Figure 3 This is a cross-sectional view of the water tank structure of a steam boiler proposed in this utility model;

[0028] Figure 4 For this Figure 3 Enlarged structural diagram of section A in the middle;

[0029] Figure 5 For this Figure 3 Another perspective structural diagram;

[0030] Figure 6 This is a cross-sectional structural diagram of the flue of a steam boiler proposed in this utility model.

[0031] In the diagram: 1. Furnace body; 2. Water inlet pipe; 3. Exhaust pipe; 4. Drain pipe; 5. Burner; 6. Exhaust stack; 7. Motor; 8. Rotating shaft; 9. Water tank; 10. First scraper; 11. Groove; 12. Drain hole; 13. Second scraper; 14. Arc groove; 15. Bending section; 16. Extension pipe; 17. Filter plate; 18. Collection cylinder; 19. Blocking plate; 20. Connecting shaft; 21. Brush. Detailed Implementation

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Example 1: Refer to Figures 1-6 A steam boiler, used in the boiler industry, includes: a boiler body 1, which serves as the main body of the boiler and is used to contain the heat and water generated by combustion. A burner 5 is connected to one side of the boiler body 1. The burner 5 adopts the burner described in patent document CN102330970B and is used to provide the fuel required for combustion to generate heat. A water tank 9 located inside the boiler body 1 is connected to one end of a water inlet pipe 2 and an exhaust pipe 3. The water tank 9 is used to hold water and heat the water into steam by absorbing heat from the boiler body 1. Symmetrically arranged water inlet pipes 2 and exhaust pipes 3 are fixed to the outer wall of the boiler body 1. The water inlet pipe 2 is used to add water to the water tank 9, while the exhaust pipe 3 is used to discharge the steam or high-temperature gas generated in the water tank 9.

[0034] A flue duct 6 is connected to the top of the furnace body 1, and the flue duct 6 is used to discharge the flue gas generated by boiler combustion. In order to filter impurities in the flue gas, a filtration mechanism is installed inside the flue duct 6. The filtration mechanism includes a bend 15 provided on the flue duct 6, one end of the bend 15 is sealed, and an extension pipe 16 is connected in the middle. A filter plate 17 corresponding to the extension pipe 16 is fixedly provided on the inner wall of the bend 15. The filter plate 17 can block larger impurities in the flue gas and cause them to be deposited inside the bend 15.

[0035] To collect impurities deposited within the bend 15, a collection component is provided. The collection component includes a collection cylinder 18 threaded onto the inner wall of one end of the bend 15. A stopper 19 is fixedly provided at the bottom end of the collection cylinder 18, with one side of the stopper 19 abutting against the bend 15 to limit the movement of the collection cylinder 18. When it is necessary to clean the impurities, simply unscrew the collection cylinder 18 from the bend 15 to remove the impurities deposited within it.

[0036] A cleaning mechanism is provided for cleaning the inner wall of the water tank 9. The cleaning mechanism includes a rotating shaft 8 that rotates through the top of the water tank 9. A motor 7 is fixedly mounted on the top of the furnace body 1, and the top end of the rotating shaft 8 passes through the top of the furnace body 1 and is fixedly connected to the output end of the motor 7. When the motor 7 starts, it drives the rotating shaft 8 to rotate. A first scraper 10 located inside the water tank 9 is fixedly mounted on the outer wall of the rotating shaft 8. The first scraper 10 rotates with the rotation of the rotating shaft 8, thereby cleaning the inner wall of the water tank 9.

[0037] To further improve the cleaning effect, a second scraper 13 is fixedly installed on the outer wall of the bottom end of the rotating shaft 8, located on the outer wall of the water tank 9. The second scraper 13 also rotates with the rotation of the rotating shaft 8 to clean the outer wall of the water tank 9. In this way, both the inner and outer walls of the water tank 9 can be effectively cleaned.

[0038] To facilitate the discharge of wastewater and scale from the water tank 9, a drain pipe 4 is fixedly installed through the outer wall of the furnace body 1. A groove 11 is provided at the bottom of the rotating shaft 8, and multiple drain holes 12 communicating with the groove 11 are opened on the outer wall of the rotating shaft 8. The top end of the drain pipe 4 is rotatably located at the bottom end of the rotating shaft 8. When wastewater and scale need to be discharged, simply connect the drain pipe 4 to an external drainage pipe, open the valve on the drain pipe 4, and start the motor 7 to rotate the rotating shaft 8. At this time, the wastewater and scale will be carried into the groove 11 and discharged into the drain pipe 4 through the drain holes 12.

[0039] Example 2: Reference Figures 1-6 An improvement on Example 1 is made by designing the outer wall of the water tank 9 as a wave shape to increase the contact area between the water tank 9 and the flue gas and improve heat exchange efficiency. This design not only increases the surface area of ​​the water tank 9, but also allows the flue gas to make more full contact with the outer wall of the water tank 9 when it flows through it, thereby improving heat exchange efficiency.

[0040] In addition, a connecting shaft 20 is fixedly provided on the top of the blockage plate 19 for cleaning the filter plate 17. The outer wall of the connecting shaft 20 is provided with multiple brushes 21 for cleaning the filter plate 17. When the collection cylinder 18 is turned, the connecting shaft 20 rotates, causing the brushes 21 to clean the filter plate 17. This not only collects impurities deposited in the bend 15 but also cleans the filter plate 17, preventing it from becoming clogged.

[0041] Both the first scraper 10 and the arc-shaped groove 14 are L-shaped, and the sides of the first scraper 10 and the arc-shaped groove 14 that are close to each other are provided with arc-shaped grooves 14 that are adapted to the outer wall of the water tank 9. This design allows the first scraper 10 and the arc-shaped groove 14 to fit more tightly against the inner and outer walls of the water tank 9, thereby improving the cleaning effect.

[0042] In this application, when in use, the burner 5 and motor 7 are connected to the power supply and gas supply, and the external water pump is started. Water can enter the water tank 9 through the water inlet pipe 2. Then the burner 5 is started to burn. The heat generated by the combustion will be transferred to the water inside the water tank 9. When the water temperature reaches boiling, water vapor will be generated. The water vapor will be discharged into the connected equipment through the exhaust pipe 3, while the generated flue gas will enter the flue 6 and flow into the bend 15. Finally, it will be filtered through the filter plate 17 and discharged through the extension pipe 16.

[0043] When the water tank 9 needs to be cleaned, the motor 7 is started. The motor 7 drives the rotating shaft 8 to rotate, which in turn drives the first scraper 10 and the second scraper 13 to rotate, so that the inner and outer walls of the water tank 9 can be cleaned at the same time. The dust cleaned up flows with the flue gas and is filtered through the filter plate 17, while the scale inside the water tank 9 remains inside the water tank 9. Then, the external water pump is started to send water into the water tank 9, and at the same time, the valve on the drain pipe 4 is opened. At this time, the water and scale in the water tank 9 will enter the drain pipe 4 through the drain hole 12 and the groove 11, and finally be discharged through the drain pipe 4.

[0044] However, as is well known to those skilled in the art, the working principles and wiring methods of burner 5 and motor 7 are commonplace and are all conventional methods or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0045] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steam boiler, characterized in that, The furnace includes a furnace body (1), a burner (5) is connected to one side of the furnace body (1), and a symmetrically arranged water inlet pipe (2) and exhaust pipe (3) are fixed on the outer wall of the furnace body (1). A water tank (9) located inside the furnace body (1) is connected to one end of the water inlet pipe (2) and the exhaust pipe (3) for holding water. The outer wall of the water tank (9) is wavy to increase the contact area with the flue gas; A flue (6) is connected to the top of the furnace body (1) for exhausting flue gas; A cleaning mechanism is installed on the water tank (9) for cleaning the inner wall of the water tank (9); A filtration mechanism is installed inside the flue (6) to filter impurities in the flue gas. The flue (6) is also equipped with a collection device for collecting the filtered impurities.

2. A steam boiler according to claim 1, characterized in that, The cleaning mechanism includes a rotating shaft (8) that is rotatably mounted on the top of the water tank (9). A motor (7) is fixedly mounted on the top of the furnace body (1). The top end of the rotating shaft (8) is fixedly connected to the output end of the motor (7) through the top of the furnace body (1). A first scraper (10) located inside the water tank (9) is fixedly mounted on the outer wall of the rotating shaft (8) for cleaning the inner wall of the water tank (9).

3. A steam boiler according to claim 2, characterized in that, The bottom outer wall of the rotating shaft (8) is fixedly provided with a second scraper (13) located on the outer wall of the water tank (9) for cleaning the outer wall of the water tank (9).

4. A steam boiler according to claim 2, characterized in that, The outer wall of the furnace body (1) is fixedly provided with a drain pipe (4), the bottom end of the rotating shaft (8) is provided with a groove (11), the outer wall of the rotating shaft (8) is provided with a plurality of drain holes (12) communicating with the groove (11), and the top end of the drain pipe (4) is rotatably provided at the bottom end of the rotating shaft (8) for discharging sewage and scale.

5. A steam boiler according to claim 1, characterized in that, The filtering mechanism includes a bent section (15) provided on the exhaust pipe (6), one end of the bent section (15) is sealed, an extension tube (16) is connected to the middle of the bent section (15), and a filter plate (17) corresponding to the extension tube (16) is fixedly provided on the inner wall of the bent section (15) for filtering impurities.

6. A steam boiler according to claim 5, characterized in that, The collecting component includes a collecting cylinder (18) with a threaded arrangement on the inner wall of one end of the bending portion (15). A blocking plate (19) is fixedly provided at the bottom end of the collecting cylinder (18). One side of the blocking plate (19) abuts against the bending portion (15) to limit the collecting cylinder (18).

7. A steam boiler according to claim 6, characterized in that, The top of the blocking plate (19) is fixedly provided with a connecting shaft (20), and the outer wall of the connecting shaft (20) is provided with a plurality of brushes (21) for cleaning the filter plate (17). When the collection cylinder (18) is turned, the connecting shaft (20) is rotated.

8. A steam boiler according to claim 4, characterized in that, The first scraper (10) and the arc groove (14) are both L-shaped. The first scraper (10) and the arc groove (14) are provided with an arc groove (14) that is adapted to the outer wall of the water tank (9) on the side that is close to each other.

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