A steam boiler with multi-stage energy recovery function
The steam boiler design with multi-stage energy recovery function solves the problems of energy waste and safety hazards during high-temperature heating, and achieves efficient heat recovery and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU YUTAI ENERGY EQUIP CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-21
AI Technical Summary
Existing steam boilers generate a large amount of high-temperature exhaust gas and wastewater during the high-temperature heating process, resulting in energy waste and safety hazards. In particular, solid impurities that are not removed in time can easily cause local overheating or corrosion.
The design includes a steam boiler with multi-stage energy recovery, comprising a tank assembly, a flue gas assembly, and a blowdown assembly. The first energy recovery assembly recovers heat from the high-temperature flue gas, the second energy recovery assembly recovers heat from the wastewater and solid impurities, and the flow rate detection assembly optimizes the heat recovery efficiency.
It effectively recovers heat from high-temperature flue gas and wastewater, reduces energy waste, improves safety, prevents safety issues caused by solid impurities, and enhances overall energy utilization efficiency.
Smart Images
Figure CN120825083B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of steam boiler technology, specifically a steam boiler with multi-stage energy recovery function. Background Technology
[0002] A steam boiler refers to a boiler equipment that produces steam. A gas-fired steam boiler is a heat energy conversion device that uses gaseous fuels such as natural gas, liquefied petroleum gas, and city gas as fuels. The heat released by the combustion of these fuels in the furnace heats the water in the boiler and vaporizes it into steam.
[0003] Steam boilers heat water through high-temperature combustion to produce high-temperature steam. However, during high-temperature heating, the burner generates a large amount of high-temperature exhaust gas, resulting in unnecessary energy waste. Although the burner heats the water to high temperature, turning it into high-temperature steam, there will still be wastewater residue that needs to be discharged. This wastewater contains impurities such as mineral crystals and sludge. If these solid impurities are not removed in time due to the high temperature, they can easily lead to safety problems such as localized overheating or corrosion. Summary of the Invention
[0004] The purpose of this invention is to provide a steam boiler with multi-stage energy recovery function to solve the problems raised in the prior art.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A steam boiler with multi-stage energy recovery function includes a tank assembly, a flue gas assembly, and a blowdown assembly. The flue gas assembly is located at the top of the tank assembly, and the blowdown assembly is located at the bottom of the tank assembly. A first energy recovery assembly is located on the flue gas assembly for recovering heat from the exhaust gas in the flue gas assembly. A second energy recovery assembly is located at the bottom of the blowdown assembly for recovering heat from wastewater and solid impurities. A flow rate detection assembly is located inside the first energy recovery assembly for detecting the liquid flow rate in the pipeline.
[0007] Furthermore, the steam boiler heats water through high-temperature combustion to generate high-temperature steam. However, during high-temperature heating, the combustion engine produces a large amount of high-temperature exhaust gas. Although the water is heated to high temperature by the combustion engine and converted into high-temperature steam, wastewater remains and needs to be discharged. The wastewater contains impurities such as mineral crystals and sludge. Due to the high temperature, if these solid impurities are not removed in time, they can easily lead to local overheating or corrosion. The tank assembly is the main structure. The flue gas exhaust assembly is used to allow the high-temperature exhaust gas to flow and heat the water in the tank. The sewage discharge assembly is used to discharge the wastewater and solid impurities. The first energy recovery assembly is used to collect the high-temperature flue gas and recover heat from it, improving the recovery efficiency based on the working time. The second energy recovery assembly is used to recover heat from the high-temperature wastewater and solid impurities, and the working time is determined by the quantity and temperature of the solid impurities. The flow rate detection assembly is used to detect the liquid flow rate in the first energy recovery assembly, thereby determining the heat recovery efficiency.
[0008] The tank assembly includes a boiler body, a combustion unit, a support frame, and a connecting frame. The support frame is located on a horizontal ground. The boiler body is located at the top of the support frame. The bottom of the boiler body is fixedly connected to the support frame. The connecting frame is located at the top of the boiler body. A through hole is opened on one side of the boiler body. The output end of the combustion unit is connected to the through hole.
[0009] Furthermore, the boiler drum body is used to store water, the combustion unit is used to provide a high-temperature heat source, the support frame is located at the bottom of the boiler drum body to support the boiler drum body to stand on a horizontal bottom surface, the connecting frame is located at the top of the boiler drum body to support the flue gas assembly located on the boiler drum body, the through hole is used to connect with the input end of the combustion unit so that the combustion unit can heat the water in the boiler drum body at a high temperature, and the fixed end of the combustion unit is fixedly connected to the boiler drum body.
[0010] The smoke exhaust assembly includes a smoke outlet pipe, a front smoke chamber, and a rear smoke chamber. The front smoke chamber is located on one side of the boiler drum body, and the rear smoke chamber is located on the other side of the boiler drum body. A smoke exhaust hole is opened at the top of the rear smoke chamber. The smoke outlet pipe is located at the top of the boiler drum body and is connected to the smoke exhaust hole. A threaded smoke pipe is provided between the front smoke chamber and the rear smoke chamber.
[0011] Furthermore, the front and rear smoke chambers are located at both ends of the boiler drum body. The top of the rear smoke chamber has a smoke exhaust hole for discharging high-temperature exhaust gas. The threaded smoke pipe connects the boiler drum body, the front smoke chamber, and the rear smoke chamber. When the burner is working, it sprays a high-temperature flame and generates high-temperature flue gas. The flue gas moves through the boiler drum body to the front smoke chamber, and then through the front smoke chamber to the rear smoke chamber. During the movement, it passes through water again, and finally the flue gas is discharged through the rear smoke chamber, thereby increasing the utilization of high-temperature flue gas.
[0012] The first energy recovery component includes an outer shell and a liquid pipe. The outer shell is fitted onto the smoke outlet pipe and is fixedly connected to the smoke outlet pipe. A valve assembly is provided inside the outer shell to control the flow rate of the liquid pipe. The liquid pipe is located inside the outer shell and is wrapped around the smoke outlet pipe.
[0013] Furthermore, the outer casing is fitted onto the flue pipe, and the flue gas is discharged through the flue hole and flows into the flue pipe. Then, the liquid pipe is wrapped around the flue pipe, and the liquid pipe is used for liquid flow. Thus, when the flue gas passes through the flue pipe, the liquid pipe absorbs heat from the high-temperature flue gas inside the flue pipe. The outer casing wraps around the liquid pipe, providing a sealed environment and protection, reducing the heat loss from the flue pipe, and improving the heat absorption efficiency of the liquid pipe. The valve assembly is used to control the flow speed of the liquid pipe, thereby controlling the working efficiency of the first energy recovery component. When it first starts working, the flow is slow, reducing the heat recovery efficiency. Because the high temperature generated by the combustion unit is still rising during operation, and the content and temperature of the generated exhaust gas are relatively low, the automatic control of the flow rate reduces liquid waste and increases the contact time between the liquid and the high-temperature flue gas, indirectly improving the heat absorption efficiency of the liquid on a small amount of flue gas.
[0014] The valve body assembly includes a connecting ring, a drive push rod, and a blocking block. The connecting ring is sleeved on the flue pipe and is located on one side of the liquid pipe. A movable groove is opened inside the connecting ring, and the drive push rod is located inside the movable groove. The bottom end of the drive push rod is fixedly connected to the flue pipe. The blocking block is located at the top of the movable groove and is slidably connected to the inner wall of the movable groove. A liquid passage hole is opened on the connecting ring, and a circular groove is opened on the blocking block. The top end of the drive push rod is fixedly connected to the blocking block.
[0015] Furthermore, the valve body assembly is used to control the outlet of the liquid pipe, thereby controlling the liquid flow rate. The connecting ring provides installation space for the blockage block, allowing it to move up and down. The circular groove in the blockage block connects to the inlet of the liquid pipe. The input end of the drive push rod is fixedly connected to the bottom of the blockage block. The drive push rod acts as a power source to control the movement of the blockage block, which in turn controls the movement of the circular groove, thus controlling the size of the valve outlet. The drive push rod is controlled by the second energy recovery assembly. The higher the efficiency of the second energy recovery assembly, the farther the drive push rod can be pushed. When the liquid passage hole and the circular groove are coaxial, the liquid flow rate is at its maximum and the heat recovery efficiency is at its maximum. The greater the misalignment between the two, the lower the liquid flow rate and the lower the efficiency.
[0016] The flow rate detection assembly includes a fan blade, a rotating rod, and a coil. A groove is provided inside the liquid tube, and the rotating rod is located inside the groove. Both ends of the rotating rod are rotatably connected to the inner wall of the groove. A fan blade is provided on the rotating rod and is fixedly connected to the rotating rod. Magnetic blocks are provided at both ends of the rotating rod, and the coil is sleeved on the magnetic blocks.
[0017] Furthermore, the flow rate detection component is used to detect the flow rate of the liquid in the liquid pipeline, and then determine the opening size of the valve based on the liquid flow, and finally determine the working efficiency of the second energy recovery component. The groove is located inside the liquid pipe. When the liquid flows, it will pass through the groove, which will drive the fan blade. The fan blade will rotate due to the liquid. The rotation of the fan blade will drive the rotating rod to rotate, which will drive the magnetic block to rotate. The magnetic block will then rotate in the coil, which will generate current in the coil. The faster the rotation speed, the greater the current, and the larger the valve opening.
[0018] The sewage discharge assembly includes a sewage discharge pipe and a collection chamber. A sewage discharge hole is provided at the bottom of the rear smoke chamber, and a sewage discharge pipe is provided at the sewage discharge hole. One end of the sewage discharge pipe extends to the boiler drum body, and one end of the sewage discharge hole is connected to the internal space of the boiler drum body. A collection chamber is provided at the end of the sewage discharge pipe away from the rear smoke chamber. A filter screen is provided in the collection chamber, and a solid collection trough is opened at the bottom of the collection chamber. The bottom chamber is located at the bottom of the collection chamber.
[0019] Furthermore, the sewage discharge assembly is used to filter out solid impurities in the wastewater and collect them separately, preventing solid impurities from causing unnecessary damage to the pipeline, improving the quality of the wastewater, reducing filtration steps, and facilitating the subsequent reheating of the wastewater. The wastewater in the boiler drum body will enter the sewage discharge hole and be discharged into the sewage discharge pipe. Finally, the wastewater in the boiler drum body will enter the collection chamber through the sewage discharge pipe and reach the filter screen. The solid impurities in the liquid will be intercepted by the filter screen and fall into the solid collection tank.
[0020] The second energy recovery component includes a main semiconductor, a secondary semiconductor, and a heat insulation plate. A bottom frame is provided at the bottom end of the bottom compartment. The main semiconductor is located inside the bottom frame and is situated on the side of the bottom frame closest to the bottom compartment. A heat insulation plate is located on the side of the main semiconductor away from the bottom compartment. The heat insulation plate is fixedly connected to the bottom frame. The secondary semiconductor is located inside the bottom frame and is situated at the end of the bottom frame closest to the bottom surface. A valve is provided inside the bottom compartment and is rotatably connected to the bottom compartment. An electromagnet is provided at the bottom end of the valve.
[0021] Furthermore, the second energy recovery component converts the heat from solid impurities into electrical energy to control the valve and valve port. The main semiconductor and secondary semiconductor are connected in series. During operation, wastewater passes through the collection chamber and, due to the fluidity of the liquid, also passes through the solid collection tank, thus affecting the main semiconductor. The main semiconductor, affected by heat, continuously heats up, creating a temperature difference with the secondary semiconductor. Due to the difference in thermal motion, electrons migrate directionally within the semiconductors, moving from the main semiconductor to the secondary semiconductor, generating electrical energy. If the device has just started operating, the high-speed flow of wastewater results in a lower temperature rise, which, while affecting the main semiconductor, has a limited impact and generates a relatively low current. The valve is rotatably connected to the bottom chamber and controlled by an electromagnet. When the main and secondary semiconductors generate current, they control the electromagnet to become magnetic, causing the valve to close. As wastewater continues to flow and solid impurities accumulate, the temperature of the solid collection tank increases, increasing the impact on the main semiconductor and generating a larger current. This excess current supplies power to the drive push rod. As the current increases, the push rod's pushing distance also increases, and the valve opening widens, thus increasing the valve opening over time.
[0022] Compared with the prior art, the beneficial effects of the present invention are:
[0023] 1. When the device first starts working, the temperature rise is relatively low due to the high-speed flow of wastewater, which has a limited impact on the main semiconductor and generates a relatively low current. When the main semiconductor and the secondary semiconductor generate current, they control the electromagnet to generate magnetism, causing the valve to close. This causes solid impurities to accumulate in the solid collection tank, increasing the temperature of the solid collection tank and having a greater impact on the main semiconductor. This also increases the current generated, thereby improving the energy recovery efficiency.
[0024] 2. In this invention, as the current of the main semiconductor and the secondary semiconductor increases, the driving distance of the push rod also increases, and the movement distance of the blockage block also increases, so that the circular groove and the liquid passage hole become more and more compatible, thereby increasing the valve opening size. This allows the valve opening to become larger as the working time increases, preventing liquid waste due to the low temperature at the beginning of operation.
[0025] 3. When the present invention is in operation, the flue gas is discharged through the flue gas outlet and flows into the flue gas outlet pipe. The liquid pipe absorbs the heat of the high-temperature flue gas in the flue gas outlet pipe. The outer shell wraps around the liquid pipe to provide a sealed environment and protection, reduce the heat dissipation of the flue gas outlet pipe and improve the heat absorption efficiency of the liquid pipe. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0027] Figure 2 This is a schematic diagram of the support frame of the present invention;
[0028] Figure 3 This is a schematic diagram of the rear smoke chamber of the present invention;
[0029] Figure 4 This is a schematic diagram of the structure of the smoke exhaust hole of the present invention;
[0030] Figure 5 This is a schematic diagram of the smoke extraction assembly of the present invention;
[0031] Figure 6 This is a schematic diagram of the valve body assembly of the present invention;
[0032] Figure 7 This is a schematic diagram of the structure of the sewage discharge component of the present invention;
[0033] Figure 8 This is a schematic diagram of the structure of the second energy recovery component of the present invention;
[0034] Figure 9 This is a schematic diagram of the flow rate detection component of the present invention.
[0035] In the diagram: 1. Tank assembly; 11. Boiler drum body; 12. Combustion unit; 13. Support frame; 14. Connecting frame; 2. Smoke exhaust assembly; 21. Smoke outlet pipe; 22. Front smoke chamber; 23. Rear smoke chamber; 231. Smoke exhaust port; 232. Sewage discharge port; 3. Sewage discharge assembly; 31. Sewage discharge pipe; 32. Collection chamber; 33. Filter screen; 34. Bottom chamber; 4. First energy recovery assembly; 41. Outer shell; 42. Liquid pipe; 5. Second energy recovery assembly; 51. Main semiconductor; 52. Secondary semiconductor; 53. Heat insulation plate; 54. Bottom frame; 55. Valve; 56. Electromagnet; 6. Flow rate detection assembly; 61. Fan blade; 62. Rotating rod; 63. Coil; 64. Magnetic block; 7. Valve body assembly; 71. Connecting ring; 72. Drive push rod; 73. Blocking block. Detailed Implementation
[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0037] Example: Figures 1-9As shown, the present invention provides a steam boiler technical solution with multi-stage energy recovery function. The steam boiler includes a tank assembly 1, a flue gas assembly 2, and a sewage discharge assembly 3. The flue gas assembly 2 is provided at the top of the tank assembly 1, and the sewage discharge assembly 3 is provided at the bottom of the tank assembly 1. A first energy recovery assembly 4 is provided on the flue gas assembly 2, which is used to recover heat from the exhaust gas in the flue gas assembly 2. A second energy recovery assembly 5 is provided at the bottom of the sewage discharge assembly 3, which is used to recover heat from wastewater and solid impurities. A flow rate detection assembly 6 is provided inside the first energy recovery assembly 4, which is used to detect the liquid flow rate in the pipeline.
[0038] Specifically, a steam boiler heats water through high-temperature combustion to produce high-temperature steam. However, during high-temperature heating, the burner generates a large amount of high-temperature exhaust gas. Although the water is heated to high temperature by the burner and converted into high-temperature steam, wastewater remains and needs to be discharged. This wastewater contains impurities such as mineral crystals and sludge. If these solid impurities are not removed in time due to the high temperature, they can easily cause local overheating or corrosion. The tank assembly 1 is the main structure. The flue gas assembly 2 is used to allow the high-temperature exhaust gas to flow and heat the water in the tank. The sewage discharge assembly 3 is used to discharge the wastewater and solid impurities. The first energy recovery assembly 4 is used to collect the high-temperature flue gas and recover heat from it, improving the recovery efficiency based on the working time. The second energy recovery assembly 5 is used to recover heat from the high-temperature wastewater and solid impurities, and the working time is determined by the quantity and temperature of the solid impurities. The flow rate detection assembly 6 is used to detect the liquid flow rate in the first energy recovery assembly 4, thereby determining the heat recovery efficiency.
[0039] like Figures 1-4 As shown, the tank assembly 1 includes a boiler body 11, a combustion unit 12, a support frame 13 and a connecting frame 14. The support frame 13 is located on a horizontal ground. The boiler body 11 is provided at the top of the support frame 13. The bottom end of the boiler body 11 is fixedly connected to the support frame 13. The connecting frame 14 is provided at the top of the boiler body 11. A through hole is provided on one side of the boiler body 11. The output end of the combustion unit 12 is connected to the through hole.
[0040] Specifically, the boiler drum body 11 is used to store water, the combustion unit 12 is used to provide a high-temperature heat source, the support frame 13 is located at the bottom of the boiler drum body 11 and is used to support the boiler drum body 11 to stand on a horizontal bottom surface, the connecting frame 14 is located at the top of the boiler drum body 11 and is used to support the smoke exhaust assembly 2 located on the boiler drum body 11, the through hole is used to connect with the input end of the combustion unit 12 so that the combustion unit 12 can heat the water in the boiler drum body 11 at high temperature when it is working, and the fixed end of the combustion unit 12 is fixedly connected to the boiler drum body 11.
[0041] like Figures 2-4As shown, the smoke exhaust assembly 2 includes a smoke outlet pipe 21, a front smoke chamber 22 and a rear smoke chamber 23. The front smoke chamber 22 is located on one side of the boiler drum body 11, and the rear smoke chamber 23 is located on the other side of the boiler drum body 11. A smoke exhaust hole 231 is provided at the top of the rear smoke chamber 23. The smoke outlet pipe 21 is located at the top of the boiler drum body 11 and is connected to the smoke exhaust hole 231. A threaded smoke pipe is provided between the front smoke chamber 22 and the rear smoke chamber 23.
[0042] Specifically, the front smoke chamber 22 and the rear smoke chamber 23 are located at both ends of the boiler drum body 11. The top of the rear smoke chamber 23 is provided with a smoke exhaust hole 231, which is used to discharge high-temperature exhaust gas. The threaded smoke pipe is used to connect the boiler drum body 11, the front smoke chamber 22 and the rear smoke chamber 23. When the burner is working, it sprays a high-temperature flame and generates high-temperature flue gas. The flue gas moves through the boiler drum body 11 to the front smoke chamber 22, and then through the front smoke chamber 22 to the rear smoke chamber 23. During the movement, it will pass through water again. Finally, the flue gas is discharged through the rear smoke chamber 23, thereby increasing the utilization of high-temperature flue gas.
[0043] like Figure 3 , Figure 5 , Figure 6 As shown, the first energy recovery component 4 includes an outer shell 41 and a liquid pipe 42. The outer shell 41 is sleeved on the smoke outlet pipe 21 and is fixedly connected to the smoke outlet pipe 21. A valve assembly 7 is provided inside the outer shell 41. The valve assembly 7 is used to control the flow speed of the liquid pipe 42. The liquid pipe 42 is located inside the outer shell 41 and is wrapped around the smoke outlet pipe 21.
[0044] Specifically, the outer casing 41 is fitted onto the smoke outlet pipe 21. The flue gas is discharged through the smoke outlet hole and flows into the smoke outlet pipe 21. Then, the liquid pipe 42 is wrapped around the smoke outlet pipe 21 and is used for liquid flow. Thus, when the flue gas passes through the smoke outlet pipe 21, the liquid pipe 42 absorbs heat from the high-temperature flue gas inside the smoke outlet pipe 21. The outer casing 41 wraps around the liquid pipe 42, providing a sealed environment and protection, reducing the heat dissipation from the smoke outlet pipe 21, and improving the heat absorption efficiency of the liquid pipe 42. The valve assembly 7 is used to control the flow speed of the liquid pipe 42, thereby controlling the working efficiency of the first energy recovery assembly 4. When it first starts working, the flow is slow, reducing the heat recovery efficiency. Because the high temperature generated by the combustion unit 12 is still rising during operation, and the content and temperature of the generated exhaust gas are relatively low, the flow rate is automatically controlled to reduce liquid waste and increase the contact time between the liquid and the high-temperature flue gas, indirectly improving the heat absorption efficiency of the liquid on a small amount of flue gas.
[0045] like Figure 3 , Figure 5 , Figure 6As shown, the valve body assembly 7 includes a connecting ring 71, a drive push rod 72, and a blocking block 73. The connecting ring 71 is sleeved on the smoke outlet pipe 21 and is located on one side of the liquid pipe 42. A movable groove is opened inside the connecting ring 71, and the drive push rod 72 is located inside the movable groove. The bottom end of the drive push rod 72 is fixedly connected to the smoke outlet pipe 21. The blocking block 73 is located at the top of the movable groove and is slidably connected to the inner wall of the movable groove. A liquid passage hole is opened on the connecting ring 71, and a circular groove is opened on the blocking block 73. The top end of the drive push rod 72 is fixedly connected to the blocking block 73.
[0046] Specifically, valve body assembly 7 is used to control the outlet of liquid pipe 42, thereby controlling the liquid flow rate. Connecting ring 71 is used to provide installation space for block block 73, allowing block block 73 to move up and down. The circular groove in block block 73 is used to connect with the inlet of liquid pipe 42. The inlet of drive push rod 72 is fixedly connected to the bottom of block block 73. Drive push rod 72 serves as a power source to control the movement of block block 73, thereby controlling the movement of circular groove to achieve the purpose of controlling the valve size. Drive push rod 72 is controlled by second energy recovery assembly 5. The higher the efficiency of second energy recovery assembly 5, the farther the push distance of drive push rod 72. When the liquid passage hole and circular groove are coaxial, the liquid flow rate is the maximum and the heat recovery efficiency is the maximum. The greater the misalignment between the two, the minimum liquid flow rate and the lower the efficiency.
[0047] like Figure 9 As shown, the flow rate detection component 6 includes a fan blade 61, a rotating rod 62, and a coil 63. A groove is provided inside the liquid tube 42, and the rotating rod 62 is located inside the groove. Both ends of the rotating rod 62 are rotatably connected to the inner wall of the groove. The fan blade 61 is provided on the rotating rod 62, and the fan blade 61 is fixedly connected to the rotating rod 62. Magnetic blocks 64 are provided at both ends of the rotating rod 62, and the coil 63 is sleeved on the magnetic blocks 64.
[0048] Specifically, the flow rate detection component 6 is used to detect the flow rate of the liquid in the liquid pipe 42, and then determine the opening size of the valve based on the liquid flow, and finally determine the working efficiency of the second energy recovery component 5. The groove is located inside the liquid pipe 42. When the liquid flows, it will pass through the groove, which will drive the fan blade 61. The fan blade 61 will rotate due to the liquid. The rotation of the fan blade 61 will drive the rotating rod 62 to rotate. The rotation of the rotating rod 62 will drive the magnetic block 64 to rotate. The magnetic block 64 will then rotate in the coil 63, which will generate current in the coil 63. The faster the rotation speed, the greater the current, and the larger the valve opening.
[0049] like Figure 2 , Figure 7 , Figure 8As shown, the sewage discharge assembly 3 includes a sewage discharge pipe 31 and a collection chamber 32. The bottom end of the rear smoke chamber 23 is provided with a sewage discharge hole 232, and the sewage discharge hole 232 is provided with a sewage discharge pipe 31. One end of the sewage discharge pipe 31 extends to the boiler drum body 11, and one end of the sewage discharge hole 232 is connected to the internal space of the boiler drum body 11. The end of the sewage discharge pipe 31 away from the rear smoke chamber 23 is provided with a collection chamber 32. The collection chamber 32 is provided with a filter screen 33. A solid collection trough is opened at the bottom end of the collection chamber 32, and the bottom chamber 34 is located at the bottom end of the collection chamber 32.
[0050] Specifically, the sewage discharge component 3 is used to filter out solid impurities in the wastewater and collect them separately to prevent solid impurities from causing unnecessary damage to the pipeline, improve the quality of the wastewater, reduce filtration steps, and facilitate the subsequent reheating of the wastewater. The wastewater in the boiler drum body 11 will enter the sewage discharge hole 232 and be discharged into the sewage discharge pipe 31. Finally, the wastewater in the boiler drum body 11 enters the collection chamber 32 through the sewage discharge pipe 31 and reaches the filter screen 33. The solid impurities in the liquid are intercepted by the filter screen 33 and fall into the solid collection tank.
[0051] like Figure 8 As shown, the second energy recovery component 5 includes a main semiconductor 51, a secondary semiconductor 52, and a heat insulation plate 53. The bottom of the bottom chamber 34 is provided with a bottom frame 54, and the main semiconductor 51 is located inside the bottom frame 54. The main semiconductor 51 is located on the side of the bottom frame 54 close to the bottom chamber 34. The side of the main semiconductor 51 away from the bottom chamber 34 is provided with a heat insulation plate 53, which is fixedly connected to the bottom frame 54. The secondary semiconductor 52 is located inside the bottom frame 54, and the secondary semiconductor 52 is located at the end of the bottom frame 54 close to the bottom surface. The bottom chamber 34 is provided with a valve 55, which is rotatably connected to the bottom chamber 34. An electromagnet 56 is provided at the bottom of the valve 55.
[0052] Specifically, the second energy recovery component 5 is used to convert the heat from solid impurities into electrical energy, controlling valve 55 and valve port. The main semiconductor 51 and secondary semiconductor 52 are connected in series. During operation, wastewater passes through collection chamber 32, and due to the liquid's fluidity, it also passes through a solid collection tank, thus affecting the main semiconductor 51. The main semiconductor 51 continuously heats up, creating a temperature difference with the secondary semiconductor 52. Due to the difference in thermal motion, electrons within the semiconductor migrate directionally, moving from the main semiconductor 51 to the secondary semiconductor 52, generating electrical energy. If the device has just started operating, the high-speed flow of wastewater results in a lower temperature rise, although it will affect the main semiconductor... Conductor 51 has an effect, but the effect is limited, and the generated current is relatively low. Valve 55 is rotatably connected to bottom chamber 34 and is controlled by electromagnet 56. When the main semiconductor 51 and the secondary semiconductor 52 generate current, they control electromagnet 56 to generate magnetism, causing valve 55 to close. As wastewater continues to pass through and solid impurities continue to accumulate, the temperature of the solid collection tank will become higher and higher, and the effect on the main semiconductor 51 will become greater and greater, and the generated current will also increase. In turn, the excess current supplies the drive push rod 72 to work. As the current increases, the pushing distance of the drive push rod 72 is also greater, and the valve opening is also larger, so that the valve opening becomes larger as the working time increases.
[0053] Working principle: During operation, the combustion unit 12 sprays high-temperature flames and generates high-temperature flue gas. The flue gas moves through the boiler body 11 to the front smoke chamber 22, and then through the front smoke chamber 22 to the rear smoke chamber 23. During this movement, it passes through water again. Finally, the flue gas is discharged through the rear smoke chamber 23. Then, the wastewater generated enters the collection chamber 32 through the drain pipe 31 and reaches the filter screen 33. Solid impurities in the liquid are intercepted by the filter screen 33 and fall into the solid collection tank. The solid collection tank is continuously heated by the high-temperature wastewater and solid impurities. The main semiconductor 51 in the bottom frame 54 is also continuously heated by the heat, creating a temperature difference with the secondary semiconductor 52, generating electricity. When the main semiconductor 51 and the secondary semiconductor 52 generate electricity... The flow will control the electromagnet 56 to generate magnetism, causing the valve 55 to close. As wastewater continues to flow through and solid impurities continue to accumulate, the temperature of the solid collection tank will increase, which will have a greater impact on the main semiconductor 51 and generate an increased current. The excess current will then supply the drive push rod 72 to work. As the current increases, the push distance of the drive push rod 72 will also increase, and the valve opening will also increase. As the working time increases, the valve opening will become larger. As the valve opening becomes larger, the flow speed of the liquid pipe 42 will also increase. Thus, at the beginning of operation, the liquid can improve the heat absorption efficiency of a small amount of flue gas by using a lower flow rate, reducing liquid waste. As the working time increases, the temperature of the device will increase, and the liquid flow rate will also increase.
[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A steam boiler with multi-stage energy recovery function, characterized in that: The steam boiler includes a tank assembly (1), a flue gas assembly (2), and a sewage discharge assembly (3). The top of the tank assembly (1) is provided with the flue gas assembly (2), and the bottom of the tank assembly (1) is provided with the sewage discharge assembly (3). The flue gas assembly (2) is provided with a first energy recovery assembly (4), which is used to recover heat from the exhaust gas in the flue gas assembly (2). The bottom of the sewage discharge assembly (3) is provided with a second energy recovery assembly (5), which is used to recover heat from wastewater and solid impurities. The first energy recovery assembly (4) is provided with a flow rate detection assembly (6), which is used to detect the flow rate of liquid in the pipeline. The smoke exhaust assembly (2) includes a smoke outlet pipe (21); The first energy recovery component (4) includes an outer shell (41) and a liquid pipe (42). The outer shell (41) is sleeved on the smoke outlet pipe (21). The outer shell (41) and the smoke outlet pipe (21) are fixedly connected. A valve assembly (7) is provided inside the outer shell (41). The valve assembly (7) is used to control the flow rate of the liquid pipe (42). The liquid pipe (42) is located inside the outer shell (41) and is wrapped around the smoke outlet pipe (21). The smoke exhaust assembly (2) also includes a front smoke chamber (22) and a rear smoke chamber (23); The valve body assembly (7) includes a connecting ring (71), a drive push rod (72), and a blocking block (73). The connecting ring (71) is sleeved on the smoke outlet pipe (21). The connecting ring (71) is located on one side of the liquid pipe (42). A moving groove is opened in the connecting ring (71). The drive push rod (72) is located in the moving groove. The bottom end of the drive push rod (72) is fixedly connected to the smoke outlet pipe (21). The blocking block (73) is located at the top of the moving groove. The blocking block (73) is slidably connected to the inner wall of the moving groove. A liquid passage hole is opened on the connecting ring (71). A circular groove is opened on the blocking block (73). The top end of the drive push rod (72) is fixedly connected to the blocking block (73). The sewage discharge assembly (3) includes a sewage discharge pipe (31), a collection chamber (32) and a bottom chamber (34). The bottom end of the rear smoke chamber (23) is provided with a sewage discharge hole (232). The sewage discharge hole (232) is provided with a sewage discharge pipe (31). One end of the sewage discharge pipe (31) extends to the boiler body (11). One end of the sewage discharge hole (232) is connected to the internal space of the boiler body (11). The end of the sewage discharge pipe (31) away from the rear smoke chamber (23) is provided with a collection chamber (32). The collection chamber (32) is provided with a filter screen (33). The bottom end of the collection chamber (32) is provided with a solid collection trough. The bottom chamber (34) is located at the bottom end of the collection chamber (32). The second energy recovery component (5) includes a main semiconductor (51), a secondary semiconductor (52), and a heat insulation plate (53). The bottom end of the bottom chamber (34) is provided with a bottom frame (54). The main semiconductor (51) is located inside the bottom frame (54). The main semiconductor (51) is located on the side of the bottom frame (54) close to the bottom chamber (34). The side of the main semiconductor (51) away from the bottom chamber (34) is provided with a heat insulation plate (53). The heat insulation plate (53) is fixedly connected to the bottom frame (54). The secondary semiconductor (52) is located inside the bottom frame (54). The secondary semiconductor (52) is located at the end of the bottom frame (54) close to the bottom surface. The bottom chamber (34) is provided with a valve (55). The valve (55) is rotatably connected to the bottom chamber (34). The bottom end of the valve (55) is provided with an electromagnet (56).
2. A steam boiler with multi-stage energy recovery function according to claim 1, characterized in that: The tank assembly (1) includes a boiler body (11), a combustion unit (12), a support frame (13), and a connecting frame (14). The support frame (13) is located on a horizontal ground. The top of the support frame (13) is provided with the boiler body (11). The bottom of the boiler body (11) is fixedly connected to the support frame (13). The top of the boiler body (11) is provided with the connecting frame (14). A through hole is opened on one side of the boiler body (11). The output end of the combustion unit (12) is connected to the through hole.
3. A steam boiler with multi-stage energy recovery function according to claim 2, characterized in that: The front smoke chamber (22) is located on one side of the boiler body (11), and the rear smoke chamber (23) is located on the other side of the boiler body (11). The rear smoke chamber (23) has a smoke exhaust hole (231) at the top. The smoke outlet pipe (21) is located at the top of the boiler body (11). The smoke outlet pipe (21) is connected to the smoke exhaust hole (231). A threaded smoke pipe is provided between the front smoke chamber (22) and the rear smoke chamber (23).
4. A steam boiler with multi-stage energy recovery function according to claim 3, characterized in that: The flow rate detection component (6) includes a fan blade (61), a rotating rod (62), and a coil (63). A groove is provided inside the liquid tube (42), and the rotating rod (62) is located inside the groove. Both ends of the rotating rod (62) are rotatably connected to the inner wall of the groove. The rotating rod (62) is provided with a fan blade (61), and the fan blade (61) is fixedly connected to the rotating rod (62). Both ends of the rotating rod (62) are provided with magnetic blocks (64), and the coil (63) is sleeved on the magnetic blocks (64).