A fully automatic steam boiler and its accessories

Abstract

The present invention relates to the technical field of steam boilers, and specifically provides a fully automatic steam boiler and its accessories, including a boiler body, a furnace core arranged in the boiler body, a cleaning roller arranged on the periphery of the furnace core, a cleaning wheel arranged on the cleaning roller, and cleaning blades on the periphery of the cleaning wheel having raised and recessed parts, and the raised and recessed parts of the cleaning blades are adapted to the shape of the corrugated side walls of the furnace core. The raised parts can penetrate into the troughs to effectively remove stubborn scale in the scale accumulation area, and the recessed parts contact the wave crests at a smaller angle, thereby reducing excessive wear on the wave crests while ensuring the cleaning effect. At the same time, the angle between the raised part of the cleaning blade and the periphery of the cleaning wheel is close to 90° and is greater than the angle between the recessed part of the cleaning blade and the periphery of the cleaning wheel. The raised part can vertically cut the scale in the wave troughs, with strong cleaning force, and the recessed part has a smaller angle, which acts gently on the wave crests, thereby balancing the cleaning effect and equipment protection.

Description

Technical Field

[0001] The present invention relates to the technical field of steam boilers, in particular to a full-automatic steam boiler and accessories thereof. Background Art

[0002] A steam boiler is a device that uses fuel or other energy to generate steam. It is widely used in industrial production, power generation, heating, ships and other fields.

[0003] The combustion of fuel inside the furnace of a steam boiler produces high-temperature flue gas, which flows around the water pipes in the furnace wall and heats the water through heat transfer and converts it into steam. The steam is then directed to equipment or systems that require steam, providing heat or activity for industrial processes. After transferring heat, the steam cools down and converts into water, which is reheated and recycled. As the boiler is used, a large amount of scale is adsorbed on the outer wall of the furnace, affecting the boiler's operating efficiency. Therefore, the scale on the outer wall of the furnace needs to be cleaned in a timely manner.

[0004] For example, Chinese patent CN219083048U discloses a boiler with an automatic descaling device. The boiler body of this solution has a furnace shell inside, and a ring body is slidably provided on the side wall of the furnace shell. A folding rod is connected to the ring body, and a hydraulic pump is provided at the other end of the folding rod. The hydraulic pump can drive the folding rod to move back and forth up and down, and the folding rod drives the ring body to move back and forth up and down, thereby continuously scraping the outer wall of the furnace shell to prevent scale from adhering to the outer wall of the furnace shell and maintaining the heat absorption efficiency of the liquid in the boiler on the furnace shell.

[0005] The furnace in the above scheme is cylindrical in shape and has a smooth surface, which can be cleaned by scraping. However, it is difficult to clean the corrugated outer wall of the furnace by scraping. Scraping requires contact with the outer wall of the furnace. If the contact force is too large, it will cause surface scratches. If the contact force is too small or the contact is incomplete, the cleaning effect is poor. In addition, the trough position on the outer wall of the corrugated furnace is more prone to scaling, making the scale in this area more difficult to clean. Summary of the Invention

[0006] Based on this, it is necessary to provide a fully automatic steam boiler and its accessories to address the problem that it is difficult to clean the scale on the outer wall of the corrugated furnace inside the current steam boiler.

[0007] The above purpose is achieved through the following technical solutions:

[0008] A fully automatic steam boiler comprising:

[0009] The boiler body is horizontally arranged and has a furnace inside. The interior of the furnace is a combustion chamber, and the exterior of the furnace is an evaporation chamber. A plurality of cleaning rollers are evenly arranged around the exterior of the furnace, and the axes of the cleaning rollers are parallel to the axis of the furnace.

[0010] A cleaning wheel, wherein the cleaning wheel is rotatably arranged on a cleaning roller, the rotation axis of the cleaning wheel is perpendicular to the axis of the cleaning roller, cleaning blades are evenly distributed on the circumference of the cleaning wheel, one end of the cleaning blade is connected to the circumference of the cleaning wheel in a spiral shape, and the end of the cleaning blade away from the cleaning wheel has a convex and concave part, the cleaning blade is adapted to the corrugated shape of the side wall of the furnace, the area of the convex part of the cleaning blade is larger than the area of the concave part, and the angle between the convex part of the cleaning blade and the circumference of the cleaning wheel is larger than the angle between the concave part of the cleaning blade and the circumference of the cleaning wheel;

[0011] A driving assembly is provided, wherein the driving assembly can drive a plurality of cleaning rollers to revolve around the axis of the furnace and drive the cleaning wheel to move along the axial direction of the cleaning roller.

[0012] Furthermore, the drive assembly includes a transmission gear, an inner gear ring, an outer gear ring and a first drive motor, the transmission gear is coaxial with the cleaning roller and is fixedly connected, the cleaning roller is spirally connected with a moving block, the inner gear ring and the outer gear ring are coaxial and rotatably connected to the outer periphery of the furnace, the transmission gear is simultaneously engaged with the inner periphery of the outer gear ring and the outer periphery of the inner gear ring, and the rotating shaft of the first drive motor is engaged with the inner periphery of the inner gear ring.

[0013] Furthermore, a plurality of guide plates are slidingly provided on the side wall of the outer gear ring, the number of the guide plates is the same as the number of the cleaning rollers, the guide plates are parallel to the axes of the cleaning rollers, the guide plates and the cleaning rollers revolve synchronously around the axis of the furnace, a slide groove extending along the axial direction of the cleaning roller is provided on the guide plate, and the movable block is slidingly provided in the slide groove.

[0014] Furthermore, a connecting shaft is fixedly provided on the movable block, the cleaning wheel is coaxial with the connecting shaft and is rotatably connected thereto, a through hole extending radially thereof is provided on one end of the connecting shaft away from the fixed block, and a pin is passed through the through hole.

[0015] Furthermore, the drive assembly also includes a second drive motor, the rotating shaft of the second drive motor is engaged with the outer periphery of the outer gear ring, and the second drive motor is configured to start when the cleaning wheel moves from one end of the cleaning roller to the other end, and the second drive motor drives the outer gear ring to rotate a preset angle.

[0016] Furthermore, the cleaning blade is elastic.

[0017] Furthermore, a connecting chamber is provided inside the boiler body, and the connecting chamber is connected to the combustion chamber. A front smoke box is provided at the front end of the boiler body, and the front smoke box is connected to the connecting chamber. A rear smoke box is provided at the rear end of the boiler body, and the rear smoke box is connected to the front smoke box. The end of the furnace away from the connecting chamber is connected to a burner.

[0018] Furthermore, a plurality of first connecting tubes are provided between the connecting chamber and the front smoke box, and a plurality of second connecting tubes are provided between the front smoke box and the rear smoke box.

[0019] Furthermore, an energy saver is provided on the rear smoke box.

[0020] The present invention also provides an accessory for a fully automatic steam boiler, comprising a plurality of limit gears, which are rotatably connected and circumferentially uniformly arranged on the outer periphery of both ends of the furnace, and the plurality of limit gears are meshed with the inner gear ring.

[0021] The beneficial effects of the present invention are:

[0022] The present invention arranges a cleaning roller on the periphery of the furnace, and a cleaning wheel is arranged on the cleaning roller. The cleaning blades on the periphery of the cleaning wheel have raised and recessed parts, and the raised and recessed parts of the cleaning blades are adapted to the shape of the corrugated side walls of the furnace. The raised parts can penetrate into the troughs to effectively remove stubborn scale in the scale accumulation area, and the recessed parts contact the wave crests at a smaller angle, thereby reducing excessive wear on the wave crests while ensuring the cleaning effect. At the same time, the angle between the raised part of the cleaning blade and the periphery of the cleaning wheel is close to 90° and is greater than the angle between the recessed part of the cleaning blade and the periphery of the cleaning wheel. The raised part can vertically cut the scale in the wave troughs, with a strong cleaning force, and the recessed part has a smaller angle, which acts gently on the wave crests, thereby balancing the cleaning effect and equipment protection.

[0023] The present invention drives the cleaning roller to revolve around the axis of the furnace by arranging a driving component. At the same time, the cleaning wheel is passively rotated under the action of the contact between the cleaning blades and the side walls of the furnace. The cleaning blades stir the liquid in the evaporation chamber, breaking the laminar flow state, promoting uniform heating of the liquid, reducing the scaling tendency caused by local overheating, and enhancing the heat transfer efficiency. At the same time, the driving component enables the cleaning wheel to move along a spiral trajectory. Combined with the revolution of the cleaning roller and the axial movement of the cleaning wheel, the outer periphery of the furnace can be covered without dead angles, avoiding cleaning omissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a fully automatic steam boiler provided in one embodiment of the present invention;

[0025] Figure 2 for Figure 1 A left side view of a fully automatic steam boiler provided in one embodiment;

[0026] Figure 3 for Figure 2 A cross-sectional view of a fully automatic steam boiler along line AA provided in one embodiment;

[0027] Figure 4 for Figure 3A partial enlarged view of part X of a fully automatic steam boiler provided in an embodiment;

[0028] Figure 5 for Figure 1 A rear view of a fully automatic steam boiler provided in one embodiment;

[0029] Figure 6 for Figure 5 A cross-sectional view of a fully automatic steam boiler along line BB provided in an embodiment;

[0030] Figure 7 for Figure 6 A partial enlarged view of part Y of a fully automatic steam boiler provided in an embodiment;

[0031] Figure 8 A schematic structural diagram of a cleaning roller and a drive assembly of a fully automatic steam boiler provided in one embodiment of the present invention;

[0032] Figure 9 for Figure 8 A left side view of a cleaning roller and drive assembly of a fully automatic steam boiler provided in one embodiment;

[0033] Figure 10 for Figure 9 A cross-sectional view of a fully automatic steam boiler along CC provided in one embodiment;

[0034] Figure 11 for Figure 10 A partial enlarged view of part Z of a fully automatic steam boiler provided in an embodiment;

[0035] Figure 12 A schematic structural diagram of a cleaning wheel and cleaning blades for a fully automatic steam boiler provided in one embodiment of the present invention;

[0036] Figure 13 for Figure 12 A front view of a cleaning wheel and cleaning blades of a fully automatic steam boiler provided in one embodiment;

[0037] Figure 14 for Figure 13 A cross-sectional view of a cleaning wheel and cleaning blades of a fully automatic steam boiler provided in an embodiment along line DD;

[0038] Figure 15 for Figure 13 A cross-sectional view of a cleaning wheel and cleaning blades of a fully automatic steam boiler provided in an embodiment of the present invention along line EE;

[0039] Figure 16 for Figure 13 A cross-sectional view of a cleaning wheel and cleaning blades of a fully automatic steam boiler provided in one embodiment along line FF.

[0040] in:

[0041] 100, boiler body; 101, water inlet; 102, drain valve; 103, steam valve; 104, water level gauge; 110, furnace; 120, combustion chamber; 130, burner; 140, evaporation chamber; 150, connecting chamber; 160, front smoke box; 161, first connecting pipe; 170, rear smoke box; 171, second connecting pipe; 172, economizer; 180, bracket;

[0042] 200, cleaning roller; 210, cleaning wheel; 220, cleaning blade; 221, protrusion; 222, depression; 230, transmission gear; 240, moving block; 241, connecting shaft; 242, through hole; 250, inner gear ring; 260, outer gear ring; 261, annular groove; 270, guide plate; 271, slide groove; 280, first drive motor; 290, second drive motor. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0045] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0046] Refer to the following Figures 1-16 To describe a fully automatic steam boiler provided by the present invention.

[0047] A fully automatic steam boiler generates steam using fuel or other energy sources, including a boiler body 100. The boiler body 100 is arranged horizontally, and a bracket 180 is provided between the boiler body 100 and the ground. The bracket 180 supports the boiler pump body. A furnace 110 is provided inside the boiler body 100, and the furnace 110 is also arranged horizontally. The interior of the furnace 110 is a combustion chamber 120, which is filled with fuel. The combustion of the fuel provides heat. The outside of the furnace 110 is an evaporation chamber 140. A water inlet 101 is provided on the boiler body 100 of the present invention. A pump body (not shown in the figure) is connected to the water inlet 101. The pump body inputs evaporative liquid into the evaporative chamber 140. The evaporative liquid absorbs the heat generated by the combustion chamber 120 and evaporates. The side wall of the furnace 110 is corrugated. The corrugated furnace 110 can improve the heat exchange efficiency between the combustion chamber 120 and the evaporation chamber 140. A steam valve 103 is provided on the boiler body 100. The steam valve 103 opens when the steam pressure inside the boiler body 100 reaches a certain value. As the usage time increases, a large amount of scale is adsorbed on the outer wall of the furnace 110, thereby affecting the working efficiency of the boiler. Therefore, it is necessary to clean the scale on the outer wall of the furnace 110 in time.

[0048] like Figure 3 、 Figure 10 and Figure 11 As shown, in order to clean the scale on the outer wall of the furnace 110, a plurality of cleaning rollers 200 are evenly arranged on the circumference of the outer side of the furnace 110, and the axes of the plurality of cleaning rollers 200 are parallel to the axis of the furnace 110. A cleaning wheel 210 is rotatably arranged on the outer periphery of the cleaning roller 200, and the rotation axis of the cleaning wheel 210 is perpendicular to the axis of the cleaning roller 200. Cleaning blades 220 are evenly distributed axially on the outer periphery of the cleaning wheel 210. A driving assembly is provided on the outer periphery of the furnace 110, and the driving assembly is used to drive the cleaning roller 200 to revolve around the axis of the furnace 110, and at the same time drive the cleaning wheel 210 to move along the axial direction of the cleaning roller 200, so that the cleaning wheel 210 can move in a spiral trajectory on the outer side of the furnace 110.

[0049] like Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 and Figure 16As shown, one end of the cleaning blade 220 is connected to the outer periphery of the cleaning wheel 210 in a spiral shape, and the other end of the cleaning blade 220 has a protrusion 221 and a recess 222, and the portion of the protrusion 221 is larger than the portion of the recess 222. The end shape of the cleaning blade 220 is similar to an S shape. The protrusion 221 and the recess 222 of the cleaning blade 220 are adapted to the corrugated side wall of the furnace 110, and the two ends of the blade have a certain twist angle, so that all parts of the cleaning blade 220 are not in the same plane. When the cleaning wheel 210 moves outside the furnace 110, the cleaning blades 220 will contact the outer wall of the furnace 110, the raised portion 221 of the cleaning blade 220 will contact the trough area of the side wall of the furnace 110, and the recessed portion 222 of the cleaning blade 220 will contact the peak area of the side wall of the furnace 110 (this process is similar to the meshing process of two gears). As the cleaning wheel 210 moves, the cleaning blades will continuously contact the outer wall of the furnace 110, thereby removing scale attached to the outer wall.

[0050] It should be noted that, since one end of the cleaning blade 220 is spirally connected to the outer periphery of the cleaning wheel 210 and has a certain twist angle, when the protrusion 221 of the cleaning blade 220 is located in the trough of the outer wall of the furnace 110, the concave 222 of the cleaning blade 220 is just separated from the crest of the outer wall of the furnace 110, and the angle between the protrusion 221 of the cleaning blade 220 and the outer periphery of the cleaning wheel 210 is close to 90 degrees, as shown in FIG. Figure 6 and Figure 7 As shown, when the protruding portion 221 of the cleaning blade 220 contacts the trough of the outer wall of the furnace 110, the protruding portion 221 of the cleaning blade 220 can cut the scale attached to the inner trough of the outer wall of the furnace 110 more vertically. The vertical angle can generate a large shear force, effectively cutting and peeling off the hard scale attached to the trough, avoiding scale residue; and the angle between the concave portion 222 of the cleaning blade 220 and the outer peripheral wall of the cleaning wheel 210 is smaller than the angle between the protruding portion 221 and the cleaning wheel 210 The angle between the outer peripheries, that is, the concave 222 portion of the cleaning blade 220 is inclined to the outer periphery of the cleaning wheel 210, and the degree of inclination is relatively large, so that the angle between the concave 222 portion of the cleaning blade 220 and the wave crest of the outer wall of the furnace 110 when in contact is reduced, and the positive pressure of the concave 222 portion of the cleaning blade 220 on the wave crest of the outer wall of the furnace 110 can be reduced, and the concave 222 can smoothly pass over the wave crest, while removing surface dirt and protecting the structural integrity of the furnace 110.

[0051] By disposing the cleaning blades 220, when the cleaning wheel 210 cleans the peaks and troughs of the outer wall of the furnace 110, the cleaning force on the inside of the troughs of the outer wall of the furnace 110 is greater, while the cleaning force on the peaks of the outer wall of the furnace 110 is less, thereby ensuring the cleaning effect while reducing the damage to the outer side of the furnace 110 caused by the cleaning blades 220.

[0052] It can be understood that in the process of cleaning the outside of the furnace 110 by the cleaning wheel 210 and the cleaning blades 220 of the present invention, the cleaning wheel 210 rotates passively, thereby driving the cleaning blades 220 to rotate synchronously. While cleaning the outside of the furnace 110, the cleaning blades 220 can also disturb the evaporating liquid in the evaporation chamber 140, promote the flow of the evaporating liquid, improve the heat exchange efficiency, and make the evaporating liquid in the evaporation chamber 140 more evenly heated, thereby reducing the risk of laminar scaling.

[0053] Specifically, such as Figure 8 、 Figure 9 、 Figure 10 and Figure 11 As shown, the drive assembly of the present invention includes a transmission gear 230, an inner gear ring 250, an outer gear ring 260 and a first drive motor 280. The transmission gear 230 is coaxial with the cleaning roller 200 and is fixedly connected. In order to facilitate the connection between the cleaning roller 200 and the cleaning wheel 210, a moving block 240 is spirally connected to the outer periphery of the cleaning roller 200. When the cleaning roller 200 rotates around its own axis, the moving block 240 can be driven to move in the axial direction of the cleaning roller 200. The moving block 240 is rotationally connected to the cleaning wheel 210, and the moving block 240 drives the cleaning wheel 210 to move synchronously. The inner gear ring 250 and the outer gear ring 260 are coaxial and rotationally connected to the outer periphery of the furnace 110. The diameter of the inner gear ring 250 is smaller than that of the outer gear ring 2 60 in diameter, and the inner gear ring 250 and the outer gear ring 260 are on the same plane, the inner and outer circumferences of the inner gear ring 250 and the outer gear ring 260 are provided with teeth, the transmission gear 230 is meshed with the inner circumference of the outer gear ring 260 and the outer circumference of the inner gear ring 250 at the same time, the inner gear ring 250, the outer gear ring 260 and the transmission gear 230 together constitute a planetary gear set, the first drive motor 280 is fixedly provided on the outer circumference of the furnace 110, and the rotating shaft of the first drive motor 280 is meshed with the inner circumference of the inner gear ring 250. When the first drive motor 280 drives the inner gear ring 250 to rotate, the inner gear ring 250 rotates relative to the outer gear ring 260, thereby driving the transmission gear 230 to rotate around its own axis while revolving around the axis of the furnace 110.

[0054] The transmission gear 230 drives the cleaning roller 200 to rotate around its own axis and revolve around the axis of the furnace 110. The cleaning roller 200 drives the moving block 240 to move along the axial direction of the cleaning roller 200. The moving block 240 drives the cleaning wheel 210 to move along the axial direction of the cleaning roller 200. At the same time, the cleaning roller 200 drives the cleaning wheel 210 to revolve around the axis of the furnace 110, so that the cleaning wheel 210 can move in a spiral trajectory. Since the cleaning blades 220 on the outer periphery of the cleaning wheel 210 contact the corrugated side wall of the furnace 110, the cleaning wheel 210 rotates around its own axis.

[0055] It should be noted that if Figure 11 As shown, in order to ensure that the cleaning roller 200 stably revolves around the axis of the furnace 110, an annular groove 261 is provided on the side wall of the outer gear ring 260. A plurality of guide plates 270 are slidably provided in the annular groove 261. The number of the guide plates 270 is the same as the number of the cleaning roller 200. The guide plates 270 are provided with a chute 271 extending along the axial direction thereof. The cleaning roller 200 is rotatably provided in the chute 271. The axes of the guide plates 270 and the cleaning roller 200 are parallel to each other. Figure 8 As described above, the inner gear ring 250 and the outer gear ring 260 in this embodiment are arranged in pairs, and the transmission gear 230 is also arranged in pairs. A pair of transmission gears 230 are coaxially and fixedly connected to the two ends of the cleaning roller 200, and a pair of inner gear rings 250 and outer gear rings 260 are rotatably connected to the outer periphery of the two ends of the furnace 110. An annular groove 261 is opened on the end surfaces of a pair of outer gear rings 260 close to each other. The two ends of the guide plate 270 are respectively slidably set in the two annular grooves 261, and the moving block 240 is simultaneously slidably set in the slide groove 271 of the guide plate 270. The moving block 240 is a rectangular block, and the slide groove 271 is a rectangular groove. The slide groove 271 limits the rotation of the moving block 240, and the moving block 240 can only move along the axial direction of the cleaning roller 200 in the slide groove 271.

[0056] Specifically, such as Figure 11 As shown, in order to facilitate the installation and disassembly of the cleaning wheel 210, a connecting shaft 241 is fixedly provided on the moving block 240, and the center of the cleaning wheel 210 passes through the connecting shaft 241. A part of the connecting shaft 241 extends out of the cleaning wheel 210, that is, the part of the connecting shaft 241 extending out of the cleaning wheel 210, that is, the end of the connecting shaft 241 away from the moving block 240 is provided with a through hole 242 extending along its radial direction, and a pin (not shown in the figure) is passed through the through hole 242 to prevent the cleaning wheel 210 from separating from the moving block 240. When disassembly is required, it is only necessary to pull out the pin from the through hole 242 and then remove the cleaning wheel 210 from the connecting shaft 241, so as to facilitate the replacement and maintenance of the cleaning wheel 210.

[0057] More specifically, the drive assembly in this embodiment also includes a second drive motor 290, which is also fixedly arranged on the outer periphery of the furnace 110. The rotating shaft of the second drive motor 290 is engaged with the outer periphery of the outer gear ring 260. The second drive motor 290 is configured to start when the cleaning wheel 210 moves from one end of the cleaning roller 200 to the other end. The second drive motor 290 drives the outer gear ring 260 to rotate a certain angle. At this time, the first drive motor 280 stops and the inner gear ring 250 stops rotating. Only the outer gear ring 260 rotates relative to the inner gear ring 250, so that the outer gear ring 260 drives the cleaning roller 200 to move a certain distance along the circumference of the outer gear ring 260. After the movement is completed, the second drive motor 290 stops rotating, and then the first drive motor 280 rotates in the opposite direction. The first drive motor 280 drives the inner gear ring 250 to rotate in the opposite direction, and the cleaning roller 200 rotates in the opposite direction at the same time. The cleaning wheel 210 on the cleaning roller 200 also moves in the opposite direction, and drives the cleaning roller 200 to move a certain distance in the circumferential direction through the outer gear ring 260, so that when the cleaning roller 200 is reset in the opposite direction, it is reset along a new trajectory instead of the original trajectory. The first drive motor 280 and the second drive motor 290 repeat the above steps continuously, so that the cleaning wheel 210 can clean the entire periphery of the furnace 110, avoiding the omission of cleaning.

[0058] It should be noted that the cleaning blades 220 on the periphery of the cleaning wheel 210 of the present invention are elastic and have a certain hardness, for example, polyurethane elastic material, thermoplastic material or polyurethane material, etc., which are not specifically limited here. The elastic cleaning blades 220 cause less damage to the outside of the furnace 110, and at the same time have a certain hardness and can ensure the ability to clean scale.

[0059] Specifically, the boiler body 100 in this embodiment is further provided with a connecting chamber 150, which is connected to the combustion chamber 120. A front smoke box 160 is provided at the front end of the boiler body 100, which is connected to the connecting chamber 150. A rear smoke box 170 is provided at the rear end of the boiler body 100, which is connected to the front smoke box 160. The flue gas generated by combustion in the combustion chamber 120 can enter the connecting chamber 150, the flue gas in the connecting chamber 150 enters the front smoke box 160, and the flue gas in the front smoke box 160 finally enters the rear smoke box 170.

[0060] More specifically, Figure 2 and Figure 3As shown, a plurality of first connecting holes are provided on one end of the front smoke box 160 close to the boiler body 100, and a plurality of first connecting holes are also provided on one end surface of the connecting chamber 150 close to the front smoke box 160. A first connecting pipe 161 is provided between the front smoke box 160 and the connecting chamber 150. One end of the first connecting pipe 161 is connected to the first connecting hole on the front smoke box 160, and the other end of the first connecting pipe 161 is connected to the first connecting hole on the connecting chamber 150. The flue gas in the connecting chamber 150 enters the front smoke box 160 through the first connecting pipe 161. The first connecting pipe 161 is located in the evaporation chamber 140 and contacts the evaporating liquid. The flue gas in the first connecting pipe 161 can improve the heat exchange efficiency of the steam chamber. A plurality of second connecting holes are also provided on one end of the box 160 close to the connecting chamber 150, and a plurality of second connecting holes are also provided on one end surface of the rear smoke box 170 close to the boiler body 100. A plurality of second connecting pipes 171 are provided between the front smoke box 160 and the rear smoke box 170. One end of the second connecting pipe 171 is connected to the second connecting hole on the front smoke box 160, and the other end of the second connecting pipe 171 is connected to the second connecting hole on the rear smoke box 170, so that the flue gas in the front smoke box 160 enters the rear smoke box 170 through the second connecting pipe 171. The second connecting pipe 171 is also located in the evaporation chamber 140. The flue gas in the second connecting pipe 171 can further improve the heat exchange efficiency in the evaporation chamber 140.

[0061] It should be noted that the rear smoke box 170 of the present invention is equipped with an economizer 172. Economizer 172 recovers waste heat from the exhaust gas of the boiler body 100, improving energy efficiency and reducing operating costs while meeting both environmental and energy conservation requirements. During operation, the exhaust gas temperature of the boiler body 100 is typically high (e.g., 150-250°C). Heat loss from the exhaust gas is a major component of boiler heat loss (approximately 5%-15%). The economizer 172 (typically a tubular or plate heat exchanger) utilizes the waste heat from the exhaust gas to heat boiler feed water or other media, lowering the exhaust gas temperature (generally to below 100°C), thereby reducing heat waste. For example, if the exhaust gas temperature is reduced from 200°C to 100°C, the boiler's thermal efficiency can be increased by approximately 5%-8%. Furthermore, the water heated by the economizer 172 entering the boiler reduces the boiler body's fuel consumption. For example, for every 10°C increase in water temperature, fuel consumption can be reduced by approximately 2%-3%.

[0062] A drain valve 102 is also provided below the boiler body 100 and is connected to the evaporation chamber 140. When the boiler body 100 is in operation, calcium, magnesium and other ion impurities in the evaporating liquid will precipitate due to heat to form scale that adheres to the outer wall of the furnace 110. After this scale is cleaned, it will be deposited at the lower end of the boiler body 100. The drain valve 102 is opened regularly to discharge the scale deposited at the lower end of the boiler body 100. By discharging impurities and controlling water quality and water level, the drain valve 102 achieves all-round protection for the safety, efficiency and life of the boiler body 100.

[0063] like Figure 1 As shown, the boiler body 100 is also provided with a water level gauge 104, which is used to monitor the amount of evaporated liquid inside the boiler body 100. When the water level gauge 104 alarms, it means that the evaporated liquid in the evaporation chamber 140 is lower than the normal value and the evaporated liquid needs to be replenished in time.

[0064] The working process of a fully automatic steam boiler provided by the present invention is described in combination with the above embodiments:

[0065] The pump body (not shown in the figure) is started to transport the evaporated liquid into the evaporation chamber 140 of the boiler body 100. At the same time, the burner 130 is started. The burner 130 sprays oil into the furnace 110 for combustion. The combustion inside the furnace 110 generates flue gas, which enters the connecting chamber 150 and then enters the front smoke box 160 through the first connecting pipe 161 in the connecting chamber 150. Then, the flue gas enters the rear smoke box 170 through the second connecting pipe 171 in the front smoke box 160. The flue gas finally passes through the economizer 172 and is discharged from the rear smoke box 170. The first connecting pipe 161 and the second connecting pipe 171 through which the flue gas passes are both located in the evaporation chamber 140 and come into contact with the evaporated liquid. The heat generated by the flue gas can evaporate the evaporated liquid. When the steam pressure in the boiler body 100 reaches the set value of the steam valve 103, the steam valve 103 opens, and the steam inside the boiler body 100 is discharged through the steam valve 103.

[0066] As the boiler body 100 is used for a longer time, scale will form on the outer wall of the furnace 110. Since the side wall of the furnace 110 is corrugated, more scale will gather at the trough position of the outer wall of the furnace 110, while relatively less scale will gather at the peak position of the outer wall of the furnace 110.

[0067] When cleaning is required, the first drive motor 280 is started first. The rotating shaft of the first drive motor 280 drives the inner gear ring 250 to rotate. Since the second drive motor 290 is not started, the outer gear ring 260 is stationary, and the inner gear ring 250 rotates relative to the outer gear ring 260. The transmission gear 230 between the inner gear ring 250 and the outer gear ring 260 is driven to rotate around its own axis and revolve around the axis of the furnace 110. The transmission gear 230 drives the cleaning roller 200 to rotate synchronously. Since the spirally arranged moving block 240 on the cleaning roller 200 can only move along the slide groove 271 of the guide plate 270, the cleaning roller 200 rotates to drive the moving block 240 to move along the slide groove 271 of the wire plate, and the cleaning wheel 210 connected to the moving block 240 rotates. As the cleaning blade 220 contacts the corrugated side wall of the furnace 110 and begins to rotate around its own axis, the raised portion 221 on the cleaning blade 220 can extend more vertically into the trough of the side wall of the furnace 110, thereby being able to cut off the scale accumulated in the trough, reducing the adhesion force of the scale, and the recessed portion 222 on the cleaning blade 220 can contact the peak of the side wall of the furnace 110 at a relatively inclined angle to reduce the contact pressure of the recessed portion 222 of the cleaning blade 220 on the side wall of the furnace 110, thereby reducing damage to the peak portion of the side wall of the furnace 110. Therefore, the cleaning blade 220 can clean the trough where more scale is accumulated, and can also clean the peak where less scale is accumulated with less force, while having a better cleaning effect.

[0068] When the moving block 240 drives the cleaning wheel 210 to move from one end to the other end on the cleaning roller 200 and needs to be reset, the first drive motor 280 is stopped and the second drive motor 290 is started. The second drive motor 290 drives the outer gear ring 260 to rotate a small angle, and the outer gear ring 260 drives the transmission gear 230 to rotate a small angle. The transmission gear 230 moves a small distance in the circumferential direction of the inner periphery of the outer gear ring 260, and the transmission gear 230 drives the cleaning roller 200 to move synchronously. Then the second drive motor 290 is stopped and the first drive motor 280 is restarted. The first drive motor 280 rotates in the opposite direction, and the first drive motor 280 drives the inner gear ring 250 to rotate in the opposite direction. The inner gear ring 250 drives the transmission gear 230 to rotate in the opposite direction, so that the cleaning roller 200 and the cleaning wheel 210 move in the opposite direction and reset. However, since the position of the cleaning roller 200 changes before the reverse reset, the reset trajectory of the cleaning wheel 210 on the cleaning roller 200 will also change, thereby gradually increasing the area cleaned by the cleaning blade 220. In addition, in this embodiment, multiple cleaning rollers 200 and cleaning wheels 210 are provided, and it only takes a short time to clean the entire outer wall of the furnace 110, with a certain cleaning efficiency. At the same time, the passive rotation of the cleaning blade 220 can also disturb the evaporating liquid, thereby improving the heat exchange efficiency of the evaporating liquid.

[0069] The drain valve 102 on the boiler body 100 is opened regularly to discharge the scale deposited at the bottom of the boiler body 100 and the scale cleaned by the cleaning blades 220. When the water level gauge 104 alarms, it indicates that the evaporated liquid in the evaporation chamber 140 is low and needs to be replenished in time.

[0070] The present invention also provides an accessory for a fully automatic steam boiler, which includes multiple limiting gears, which are rotatably connected to the outer periphery of the two ends of the furnace 110 and are evenly distributed circumferentially on the outer periphery of the two ends of the furnace 110. The multiple limiting gears are all engaged with the inside of the inner gear ring 250, and the multiple limiting gears are used to limit the inner gear ring 250 to the outer periphery of the two ends of the furnace 110.

[0071] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A fully automatic steam boiler, characterized in that: include: The boiler body is horizontally arranged and has a furnace inside. The interior of the furnace is a combustion chamber, and the exterior of the furnace is an evaporation chamber. A plurality of cleaning rollers are evenly arranged around the exterior of the furnace, and the axes of the cleaning rollers are parallel to the axis of the furnace. A cleaning wheel, wherein the cleaning wheel is rotatably arranged on a cleaning roller, the rotation axis of the cleaning wheel is perpendicular to the axis of the cleaning roller, cleaning blades are evenly distributed on the circumference of the cleaning wheel, one end of the cleaning blade is connected to the circumference of the cleaning wheel in a spiral shape, and the end of the cleaning blade away from the cleaning wheel has a convex and concave part, the cleaning blade is adapted to the corrugated shape of the side wall of the furnace, the area of the convex part of the cleaning blade is larger than the area of the concave part, and the angle between the convex part of the cleaning blade and the circumference of the cleaning wheel is larger than the angle between the concave part of the cleaning blade and the circumference of the cleaning wheel; A driving assembly is provided, wherein the driving assembly can drive a plurality of cleaning rollers to revolve around the axis of the furnace and drive the cleaning wheel to move along the axial direction of the cleaning roller.

2. The fully automatic steam boiler according to claim 1, characterized in that: The driving assembly includes a transmission gear, an inner gear ring, an outer gear ring and a first driving motor. The transmission gear is coaxial with and fixedly connected to the cleaning roller. A moving block is spirally connected to the cleaning roller. The inner gear ring and the outer gear ring are coaxial and rotatably connected to the outer periphery of the furnace. The transmission gear is simultaneously engaged with the inner periphery of the outer gear ring and the outer periphery of the inner gear ring. The rotating shaft of the first driving motor is engaged with the inner periphery of the inner gear ring.

3. The fully automatic steam boiler according to claim 2, characterized in that: A plurality of guide plates are slidingly arranged on the side wall of the outer gear ring. The number of the guide plates is the same as the number of the cleaning rollers. The guide plates are parallel to the axes of the cleaning rollers. The guide plates and the cleaning rollers revolve synchronously around the axis of the furnace. A sliding groove extending along the axial direction of the cleaning roller is provided on the guide plate, and the moving block is slidingly arranged in the sliding groove.

4. The fully automatic steam boiler according to claim 3, characterized in that: A connecting shaft is fixedly provided on the moving block, the cleaning wheel is coaxial with the connecting shaft and is rotatably connected thereto, a through hole extending radially thereof is provided on one end of the connecting shaft away from the moving block, and a pin is passed through the through hole.

5. The fully automatic steam boiler according to claim 2, characterized in that: The drive assembly also includes a second drive motor, the rotating shaft of the second drive motor is engaged with the outer periphery of the outer gear ring, and the second drive motor is configured to start when the cleaning wheel moves from one end of the cleaning roller to the other end, and the second drive motor drives the outer gear ring to rotate a preset angle.

6. The fully automatic steam boiler according to claim 1, characterized in that: The cleaning blade has elasticity.

7. The fully automatic steam boiler according to claim 1, characterized in that: A connecting chamber is provided inside the boiler body, and the connecting chamber is communicated with the combustion chamber. A front smoke box is provided at the front end of the boiler body, and the front smoke box is communicated with the connecting chamber. A rear smoke box is provided at the rear end of the boiler body, and the rear smoke box is communicated with the front smoke box. The end of the furnace away from the connecting chamber is connected to a burner.

8. The fully automatic steam boiler according to claim 7, characterized in that: A plurality of first connecting tubes are provided between the connecting chamber and the front smoke box, and a plurality of second connecting tubes are provided between the front smoke box and the rear smoke box.

9. The fully automatic steam boiler according to claim 7, characterized in that: The rear smoke box is provided with an energy saver.

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