Vertical energy-saving waste heat boiler

Abstract

The utility model discloses a vertical energy-saving waste heat boiler which comprises a boiler body and a recovery shell. By the adoption of the recovery shell, the heat conduction cavity and the heat exchange cavity, when the boiler operates, heat generated by the outer surface of the boiler can be transmitted into the heat conduction cavity through the multiple sets of heat conduction fins, then water in the heat conduction cavity is heated, meanwhile, high-temperature flue gas generated by the boiler body can be discharged into the gas inlet pipe through the gas conveying pipe, and the heat exchange efficiency is improved. The high-temperature flue gas is discharged into the heat exchange cavity through the gas inlet pipe, at the moment, the high-temperature flue gas can make contact with the multiple sets of heat exchange pipes in the heat exchange cavity, then heat is transmitted to water in the heat exchange pipes, heating of the water is achieved, and the heated water can be used for external heating. And in addition, the device can effectively enrich the overall waste heat utilization types through dual utilization of heat overflowing from the outer surface of the boiler and heat of high-temperature flue gas, meanwhile, the overall waste heat utilization effect is improved, and the device has the advantages of multiple utilization of waste heat and full utilization of the waste heat.

Description

Technical Field

[0001] This utility model relates to the field of waste heat boiler technology, specifically to a vertical energy-saving waste heat boiler. Background Technology

[0002] Waste heat boilers are boilers that use the waste heat from waste gas, waste materials, or waste liquid in various industrial processes, as well as the heat generated after the combustion of combustible substances, to heat water to a certain temperature. Oil-fired boilers, gas-fired boilers, and coal-fired boilers with waste heat recovery and utilization in the smoke box and flue are also called waste heat boilers. Waste heat boilers can produce hot water or steam through waste heat recovery to supply other processes.

[0003] The existing publicly available technology, application number CN202121290801.8, describes a vertical waste heat boiler. The flue gas chamber within the boiler facilitates the introduction and discharge of flue gas, and the heating tubes enable the flue gas to fully exchange heat with water, thus absorbing the heat from the flue gas and ensuring full utilization of heat, avoiding resource waste. Furthermore, the wastewater can be fully discharged through the drain outlet.

[0004] However, after long-term use, the surface of the heat exchange pipes of existing waste heat boilers is prone to a large amount of soot, which leads to a decrease in heat exchange efficiency and the inability to fully utilize the heat generated by the flue gas, resulting in a waste of resources. Moreover, most of them only utilize the waste heat in the generated flue gas, while the heat overflowing from the boiler itself cannot be effectively utilized, resulting in an overall waste heat utilization type and utilization effect that is not ideal.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides a vertical energy-saving waste heat boiler, which has the advantages of multiple utilization of waste heat, dust cleanliness, and full utilization of waste heat, thereby solving the problems mentioned in the background technology.

[0008] (II) Technical Solution

[0009] To achieve the advantages of multiple utilization of waste heat, dust removal, and full utilization of waste heat, the specific technical solution adopted by this utility model is as follows:

[0010] A vertical energy-saving waste heat boiler includes a boiler body and a recovery shell. Several sets of recovery shells are attached to the outer surface of the boiler body. A sealing plate is welded inside the recovery shell. A heat conduction cavity and a heat exchange cavity are respectively opened on both sides of the sealing plate inside the recovery shell. The heat conduction cavity is close to the boiler body, and the heat exchange cavity is far away from the boiler body. Several sets of heat conduction fins are evenly installed on one side of the inner surface of the heat conduction cavity. A diversion plate is symmetrically welded on both sides of the inner surface of the heat exchange cavity. Several sets of heat exchange tubes are installed between the diversion plates. A main inlet water pipe and a main outlet water pipe are respectively installed on the surface of the diversion plate. The main inlet water pipe and the main outlet water pipe are connected to the heat exchange tubes and the heat conduction cavity through pipes.

[0011] Furthermore, a cleaning plate is slidably connected to the outer periphery of the heat exchange tube. A push rod is welded to one end of the cleaning plate, and one end of the push rod penetrates one side of the recovery shell. A circular hole for sliding is opened on the surface of the cleaning plate, and a brush layer is provided inside the circular hole and on the outer surface of the cleaning plate.

[0012] Furthermore, an air inlet pipe is installed at the bottom of the surface of the recovery shell, and the air inlet pipe is connected to the boiler body through an air supply pipe. An exhaust pipe is installed at the top of the surface of the recovery shell.

[0013] Furthermore, the main water inlet pipe is located at the bottom of the surface of the recovery shell.

[0014] Furthermore, the main water outlet is located at the top of the surface of the recovery shell.

[0015] Furthermore, a channel for the push rod to move is provided on the surface of one side of the diversion plate.

[0016] Furthermore, a base is fixedly installed at the bottom of the boiler body, and several sets of support legs are symmetrically welded around the bottom of the base.

[0017] Furthermore, an ash discharge door is installed at the bottom of the surface of the recycling shell.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, this utility model provides a vertical energy-saving waste heat boiler, which has the following beneficial effects:

[0020] (1) This utility model adopts a recovery shell, a heat conduction cavity, and a heat exchange cavity. When the boiler is running, the heat generated on the outer surface of the boiler can be transferred to the heat conduction cavity through multiple sets of heat conduction fins, thereby heating the water inside the heat conduction cavity. At the same time, the high-temperature flue gas generated by the boiler body can be discharged into the air inlet pipe through the air delivery pipe, and then into the heat exchange cavity through the air inlet pipe. At this time, the high-temperature flue gas can come into contact with multiple sets of heat exchange tubes inside the heat exchange cavity, thereby transferring heat to the water in the heat exchange tubes, thus heating the water and realizing the utilization of waste heat. The heated water can be used for external heating. Furthermore, by making dual use of the heat overflowing from the outer surface of the boiler and the heat of the high-temperature flue gas, the device can effectively enrich the overall waste heat utilization types and improve the overall waste heat utilization effect. It has the advantages of multiple utilization of waste heat and full utilization of waste heat.

[0021] (2) This utility model adopts a push rod, a cleaning plate, and a brush layer. After the heat exchange tube has been used for a period of time, the cleaning plate can be moved by pulling the push rod back and forth, so that the cleaning plate can move along the heat exchange tube. At this time, the brush layer on the surface of the cleaning plate can scrape off the soot on the heat conduction cavity and the surface of the heat exchange tube, so as to avoid the soot from affecting the heat transfer, thereby ensuring the overall heat conduction efficiency, facilitating better utilization of waste heat, and reducing energy consumption. It has the advantage of dust cleaning. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a vertical energy-saving waste heat boiler proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the recycling shell of this utility model;

[0025] Figure 3 This is a schematic diagram showing the connection between the flow distribution plate and the heat exchange tube of this utility model;

[0026] Figure 4 This is a schematic diagram showing the connection between the cleaning disc and the push rod of this utility model.

[0027] In the picture:

[0028] 1. Boiler body; 2. Gas transmission pipe; 3. Recovery shell; 4. Heat exchange chamber; 5. Heat exchange tube; 6. Cleaning plate; 7. Exhaust pipe; 8. Push rod; 9. Main water outlet pipe; 10. Brush layer; 11. Sealing plate; 12. Heat conduction chamber; 13. Heat conduction fins; 14. Diverter plate; 15. Main water inlet pipe; 16. Support leg; 17. Base; 18. Gas inlet pipe; 19. Ash discharge door. Detailed Implementation

[0029] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0030] According to an embodiment of the present invention, a vertical energy-saving waste heat boiler is provided.

[0031] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4 As shown, a vertical energy-saving waste heat boiler according to an embodiment of the present invention includes a boiler body 1 and a recovery shell 3. Several sets of recovery shells 3 are attached to the outer surface of the boiler body 1. A sealing plate 11 is welded inside the recovery shell 3. A heat conduction cavity 12 and a heat exchange cavity 4 are respectively opened on both sides of the sealing plate 11 inside the recovery shell 3. The heat conduction cavity 12 is close to the boiler body 1, and the heat exchange cavity 4 is away from the boiler body 1. Several sets of heat conduction fins 13 are evenly installed on one side of the inner surface of the heat conduction cavity 12. A diversion plate 14 is symmetrically welded on both sides of the inner surface of the heat exchange cavity 4. Several sets of heat exchange tubes 5 are installed between the diversion plates 14. A water inlet pipe 15 and a water outlet pipe 9 are respectively installed on the surface of the diversion plate 14. The water inlet pipe 15 and the water outlet pipe 9 are connected to the heat exchange tubes 5 and the heat conduction cavity 12 through pipes.

[0032] In one embodiment, a cleaning plate 6 is slidably connected to the outer periphery of the heat exchange tube 5. A push rod 8 is welded to one end of the cleaning plate 6, and one end of the push rod 8 passes through one side of the recovery shell 3. A circular hole for sliding is opened on the surface of the cleaning plate 6, and a brush layer 10 is provided inside the circular hole and on the outer surface of the cleaning plate 6. The brush layer 10 is provided to wipe and clean the heat exchange tube 5 and the inner wall of the heat exchange chamber 4, so as to remove the soot attached to the surface and avoid the presence of soot affecting the heat conduction of the flue gas.

[0033] In one embodiment, an air inlet pipe 18 is installed at the bottom of the surface of the recovery shell 3. The air inlet pipe 18 is connected to the boiler body 1 through an air supply pipe 2. An exhaust pipe 7 is installed at the top of the surface of the recovery shell 3. The exhaust pipe 7 is designed to discharge the flue gas after the waste heat utilization is completed, so as to facilitate the subsequent treatment of the flue gas.

[0034] In one embodiment, the water inlet main pipe 15 is located at the bottom of the surface of the recovery shell 3. The water inlet main pipe 15 is set up to add water required for the utilization of waste heat. The water inlet main pipe 15 is located below the air inlet pipe 18. Meanwhile, the ash discharge door 19 is located between the water inlet main pipe 15 and the air inlet pipe 18. The installation of multiple sets of pipes is to avoid interference during subsequent use.

[0035] In one embodiment, the water outlet pipe 9 is located at the top of the surface of the recovery shell 3. The water outlet pipe 9 is configured to discharge the water after the waste heat is utilized, and the water outlet pipe 9 is located above the exhaust pipe 7.

[0036] In one embodiment, a channel is provided on the surface of one side of the distribution plate 14 for the push rod 8 to move. The channel is provided to facilitate the smooth movement of the push rod 8, thereby enabling the cleaning plate 6 to move along the heat exchange tube 5 to remove soot from its own surface and the surface of the heat exchange chamber 4, ensuring the subsequent heat conduction effect.

[0037] In one embodiment, a base 17 is fixedly installed at the bottom of the boiler body 1, and several sets of support legs 16 are symmetrically welded around the bottom of the base 17.

[0038] In one embodiment, an ash discharge door 19 is installed at the bottom of the surface of the recycling shell 3. The ash discharge door 19 is provided to facilitate the removal of the cleaned-up soot, ensure the cleanliness of the inside of the recycling shell 3, thereby reducing the impact of soot on heat conduction and improving the waste heat utilization effect.

[0039] Working Principle: In actual use, multiple sets of heat recovery shells 3 can be installed around the outer surface of the boiler body, ensuring the inner side of the shells 3 is firmly attached to the boiler body. This facilitates the transfer of heat generated on the outer surface to the heat recovery shells 3 during boiler operation. After the heat recovery shells 3 are assembled, the outlet water pipe 9, inlet water pipe 15, gas transmission pipe 2, and exhaust pipe 7 can be connected to facilitate the smooth flow of water for waste heat utilization and high-temperature flue gas requiring treatment. During boiler operation, the heat generated on the outer surface of the boiler can be transferred to the heat conduction chamber 12 through multiple sets of heat-conducting fins 13, thereby heating the water inside the heat conduction chamber 12. Simultaneously, the high-temperature flue gas generated by the boiler body 1 can be discharged into the inlet pipe 18 through the gas transmission pipe 2, and then into the heat exchange chamber 4 through the inlet pipe 18. At this time, the high-temperature flue gas can interact with the multiple sets of heat exchange fins inside the heat exchange chamber 4. The heat pipe 5 makes contact with the water inside, thus heating the water and utilizing waste heat. The heated water can then be used for external heating. The device effectively enriches the types of waste heat utilization and improves the overall waste heat utilization efficiency by utilizing both the heat overflowing from the boiler's outer surface and the heat from the high-temperature flue gas. After the heat pipe 5 has been used for a period of time, the cleaning plate 6 can be moved by pulling the push rod 8 back and forth, allowing it to move along the heat pipe 5. At this time, the brush layer 10 on the surface of the cleaning plate 6 can scrape off the soot on the heat conduction cavity 12 and the surface of the heat pipe 5, preventing soot from affecting heat transfer and ensuring overall heat conduction efficiency. This facilitates better waste heat utilization, reduces energy consumption, and achieves energy saving. The device as a whole has the advantages of multiple waste heat utilization, dust cleaning, and full utilization of waste heat.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 vertical energy-saving waste heat boiler, comprising a boiler body (1) and a recovery shell (3), characterized in that, Several sets of recovery shells (3) are attached to the outer surface of the boiler body (1). A sealing plate (11) is welded inside the recovery shell (3). A heat conduction cavity (12) and a heat exchange cavity (4) are respectively opened on both sides of the sealing plate (11) inside the recovery shell (3). The heat conduction cavity (12) is close to the boiler body (1), and the heat exchange cavity (4) is far away from the boiler body (1). Several sets of heat conduction fins (13) are evenly installed on one side of the inner surface of the heat conduction cavity (12). A diversion plate (14) is symmetrically welded on both sides of the inner surface of the heat exchange cavity (4). Several sets of heat exchange tubes (5) are installed between the diversion plates (14). A water inlet pipe (15) and a water outlet pipe (9) are respectively installed on the surface of the diversion plate (14). The water inlet pipe (15) and the water outlet pipe (9) are connected to the heat exchange tubes (5) and the heat conduction cavity (12) through pipes.

2. A vertical energy-saving waste heat boiler according to claim 1, characterized in that, The heat exchange tube (5) is slidably connected to a cleaning plate (6). A push rod (8) is welded to one end of the cleaning plate (6). One end of the push rod (8) passes through one side of the recovery shell (3). A circular hole for sliding is opened on the surface of the cleaning plate (6). A brush layer (10) is provided inside the circular hole and on the outer surface of the cleaning plate (6).

3. A vertical energy-saving waste heat boiler according to claim 1, characterized in that, An air inlet pipe (18) is installed at the bottom of the surface of the recovery shell (3). The air inlet pipe (18) is connected to the boiler body (1) through an air supply pipe (2). An exhaust pipe (7) is installed at the top of the surface of the recovery shell (3).

4. A vertical energy-saving waste heat boiler according to claim 1, characterized in that, The main water inlet pipe (15) is located at the bottom of the surface of the recovery shell (3).

5. A vertical energy-saving waste heat boiler according to claim 1, characterized in that, The main water outlet pipe (9) is located at the top of the surface of the recovery shell (3).

6. A vertical energy-saving waste heat boiler according to claim 1, characterized in that, A channel for the push rod (8) to move is provided on the surface of the diversion plate (14) on one side.

7. A vertical energy-saving waste heat boiler according to claim 1, characterized in that, A base (17) is fixedly installed at the bottom of the boiler body (1), and several sets of support legs (16) are symmetrically welded around the bottom of the base (17).

8. A vertical energy-saving waste heat boiler according to claim 7, characterized in that, A ash discharge door (19) is installed at the bottom of the surface of the recycling shell (3).

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