A waste heat utilization device based on hot galvanizing

Abstract

The application relates to a waste heat utilization device based on hot galvanizing and belongs to the technical field of waste heat utilization, which comprises a water tank and a filter box, and the filter box is arranged on the side of the water tank. The first rotating motor is arranged, the water in the water tank can be stirred through the operation of the first rotating motor, the stirring structure can effectively improve the heat exchange efficiency between the water and the spiral heat conducting pipe, the problem of uneven heat exchange caused by the static water body is avoided, in addition, the water flow formed in the stirring process can also reduce the local overheating phenomenon of the inner wall of the water tank, prolong the service life of the equipment, and ensure that the heat exchange process is more stable and efficient, wherein, in order to enhance the stirring effect, the first disturbance plate is designed as an arc-shaped structure, the surface of the first disturbance plate is provided with a plurality of guide grooves, the water flow can be guided to form a more complex motion track in the rotating process, the design can not only improve the overall fluidity of the water body, but also make the heat distribution more uniform, so that the heat exchange performance is further optimized.

Description

Technical Field

[0001] This application relates to waste heat utilization, and more particularly to a waste heat utilization device based on hot-dip galvanizing. Background Technology

[0002] Power plant accessories and photovoltaic solar panels are commonly used components in power systems. In their production, hot-dip galvanizing is required. Hot-dip galvanizing, also known as hot-dip zinc plating, is an effective method of metal corrosion protection, primarily used in metal structures across various industries. It involves immersing rust-removed steel components in molten zinc at approximately 500°C, causing a zinc layer to adhere to the surface and thus providing corrosion protection. The hot-dip galvanizing process requires heating multiple steps, such as heating the zinc pot and the fluxing bath. Currently, the waste heat from the flue gas generated by the hot-dip galvanizing boiler cannot be utilized.

[0003] The existing patent (publication number: CN216688279U) discloses a waste heat utilization device for hot-dip galvanizing, including a heat exchanger, a galvanizing furnace, a fluxing bath, and a heat recovery unit. The galvanizing furnace contains a zinc pot, which is heated by natural gas. A high-temperature flue gas pipe is connected to one side of the galvanizing furnace, and the output end of the high-temperature flue gas pipe is connected to the inlet end of the heat exchanger. The outlet end of the heat exchanger is connected to a low-temperature flue gas pipe. The zinc pot of this invention is heated by natural gas. The waste heat from the high-temperature, high-heat flue gas is passed into the heat exchanger and the heat exchange liquid in the heat recovery unit for heat exchange. The heated heat exchange liquid is then discharged into the secondary heat exchange unit to heat the fluxing agent in the fluxing bath. The heat exchange liquid then circulates back to the heat recovery unit. Through two heat exchanges, the waste heat from the flue gas is converted into the heat energy required by the process, meeting the process temperature, improving production efficiency, improving the working environment, and achieving energy conservation, emission reduction, and low carbon emissions.

[0004] While the device in the aforementioned comparative document solves the problem of not being able to utilize the waste heat from the flue gas generated by the combustion of hot-dip galvanized boilers, it lacks an agitation structure. During use, it cannot agitate the water in the tank, which easily leads to low heat exchange efficiency and is quite inconvenient to use. To solve the above problems, a waste heat utilization device based on hot-dip galvanizing is proposed. Utility Model Content

[0005] The purpose of this application is to provide a waste heat utilization device based on hot-dip galvanizing, which has advantages such as a stirring structure, and solves the problem that the water in the tank cannot be stirred during use, which easily leads to low heat exchange efficiency and inconvenience in use.

[0006] The waste heat utilization device based on hot-dip galvanizing provided in this application adopts the following technical solution: it includes a water tank and a filter box, wherein the filter box is disposed on the side of the water tank; The water tank contains two spiral heat-conducting tubes arranged vertically. The input ends of both tubes are located on the side of the water tank and are fixedly connected to a U-shaped inlet pipe. The output ends of both tubes are located on the other side of the water tank and are fixedly connected to an outlet U-shaped pipe. The outlet U-shaped pipe has an inlet pipe and a connecting pipe. The output end of the connecting pipe is located inside the filter box. A first fixed shell is fixedly connected to the side of the water tank. A first rotary motor is fixedly connected to the side of the first fixed shell. The output end of the first rotary motor rotates through the side of the first fixed shell and is fixedly connected to a first gear. Two first rotating rods are tightly nested on the side of the water tank via bearings. A second gear is fixedly connected to one end of each first rotating rod. A gear chain is driven through the surfaces of the first and second gears. The first rotating rods are located inside the spiral heat-conducting tubes. Multiple first disturbance plates are fixedly connected to the surface of each first disturbance plate, and guide grooves are provided on the surface of each disturbance plate. By adopting the above technical solution, a first rotating motor is installed. When the first rotating motor runs, it drives the first gear to rotate. Through the transmission of the gear chain, it drives the second gear to rotate, thereby causing the two first rotating rods to rotate synchronously. Multiple first disturbance plates on the surface of the first rotating rods rotate accordingly, stirring the water in the water tank. This stirring structure can effectively improve the heat exchange efficiency between the water and the spiral heat pipe, avoiding uneven heat exchange caused by the stillness of the water. In addition, the water flow formed during the stirring process can also reduce local overheating of the inner wall of the water tank, extend the service life of the equipment, and ensure a more stable and efficient heat exchange process. In order to enhance the stirring effect, the first disturbance plate is designed with an arc-shaped structure, and its surface is provided with several guide grooves, which can guide the water flow to form a more complex motion trajectory during rotation. This design not only improves the overall fluidity of the water, but also makes the heat distribution more uniform, thereby further optimizing the heat exchange performance.

[0007] Preferably, the water tank is provided with an inlet pipe at the top and a drain pipe at the bottom, and the inlet end of the inlet pipe is connected to an external water pump device; By adopting the above technical solution and setting up inlet and outlet pipes, the water in the tank can be efficiently renewed and circulated.

[0008] Preferably, the filter box is provided with three annular inclined plates inside, the three annular inclined plates are arranged vertically inside the filter box, the surface of the filter box is provided with three annular tubes, and the top of the filter box is provided with a second fixed shell; By adopting the above technical solution and setting three annular inclined plates, the water entering the filter box can be diverted and guided in multiple stages, effectively slowing down the water flow speed. At the same time, it can also block the flow of smoke, further reducing the impurities carried in the smoke from entering the subsequent treatment stage, thereby improving the purification efficiency of the entire device. It can also perform preliminary sedimentation on the water, allowing larger particles to settle quickly and preventing them from entering the next stage with the water flow, thus reducing the burden on the subsequent filter components.

[0009] Preferably, the surface of the annular tube is provided with a plurality of atomizing nozzles, the output end of the atomizing nozzles is disposed inside the filter box, and the output ends of the three sets of atomizing nozzles are respectively disposed at the bottom of the three annular inclined plates; By adopting the above technical solution and setting multiple atomizing nozzles, the liquid entering the annular pipe can be uniformly atomized and sprayed into the filter box. With three sets of atomizing nozzles corresponding to the bottom positions of the three annular inclined plates, it can be ensured that the water flow after each stage of diversion can be fully atomized, thereby improving the device's ability to capture fine particulate matter and soluble pollutants.

[0010] Preferably, a riser is fixedly connected to the surface of the three annular tubes, and an inlet pipe is fixedly connected to the side of the riser. The input end of the inlet pipe is connected to an external pump for adding purified liquid. A smoke exhaust pipe is provided on the side of the filter box, and a drain pipe is provided at the bottom of the filter box. By adopting the above technical solution and setting up a combination structure of riser and inlet pipe, the purified liquid delivered by the external pump equipment can be evenly introduced into the three annular pipes, ensuring a balanced liquid flow in each annular pipe.

[0011] Preferably, a second rotary motor is provided on the top of the second fixed shell, the output end of the second rotary motor rotates through the top of the second fixed shell and is fixedly connected to a third gear, a second rotating rod is tightly nested on the top of the filter box through a bearing, a fourth gear is fixedly connected to the top of the second rotating rod, the third gear and the fourth gear mesh with each other, and a plurality of second disturbance plates are provided on the surface of the second rotating rod, the positions of the plurality of second disturbance plates are respectively located at the bottom of three annular inclined plates; By adopting the above technical solution, and by setting up a second rotating motor, the operation of the second rotating motor can drive the third gear to rotate, thereby driving the fourth gear and the second rotating rod connected to it to rotate synchronously. The multiple second disturbance plates can effectively stir the atomized liquid at the bottom of the three annular inclined plates as the second rotating rod rotates, so that the liquid can fully contact the air and further improve the purification effect.

[0012] Preferably, a cross support frame is fixedly connected inside the annular inclined plate, and the second rotating rod is rotatably connected inside the cross support frame; By adopting the above technical solution and setting up a cross support frame, a stable support can be provided for the second rotating rod, ensuring that it remains stable during high-speed rotation and avoiding the impact of vibration or displacement on the normal operation of the equipment.

[0013] Preferably, the bottom of both the water tank and the filter box are fixedly connected with multiple support feet, a thermometer is provided on the front of the water tank, and an observation window is provided on the front of the water tank; By adopting the above technical solution and setting support feet, the stability of the water tank and filter box can be enhanced, preventing the equipment from shaking or tipping over during operation. The setting of the thermometer facilitates real-time monitoring of temperature changes inside the water tank.

[0014] In summary, this application includes at least one of the following beneficial technical effects: This waste heat utilization device based on hot-dip galvanizing utilizes a first rotating motor. The motor drives a first gear, which in turn drives a second gear via a gear chain. This causes the two first rotating rods to rotate synchronously. Multiple first agitator plates on the surface of the first rotating rods rotate accordingly, agitating the water in the tank. This agitation structure effectively improves the heat exchange efficiency between the water and the spiral heat pipe, avoiding uneven heat exchange caused by stagnant water. Furthermore, the water flow generated during agitation reduces localized overheating on the inner wall of the tank, extending the equipment's lifespan and ensuring a more stable and efficient heat exchange process. To enhance the agitation effect, the first agitator plates are designed with an arc shape and several guide grooves on their surface. These grooves guide the water flow to form more complex trajectories during rotation. This design not only improves the overall fluidity of the water but also makes the heat distribution more uniform, further optimizing heat exchange performance. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional structural diagram of this application; Figure 2 This is a schematic diagram of the structure in frontal cross-section in this application; Figure 3 This is a schematic diagram of the spiral heat pipe in this application; Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 for Figure 3 Enlarged structural diagram at point B.

[0016] In the picture: 1. Water tank; 101. Spiral heat pipe; 102. Smoke inlet U-shaped pipe; 103. Smoke inlet pipe; 104. Smoke outlet U-shaped pipe; 105. Connecting pipe; 106. Water inlet pipe; 107. Drain pipe; 108. Thermometer; 109. First fixed shell; 1010. First rotary motor; 1011. First gear; 1012. First rotating rod; 1013. Second gear; 1014. Gear chain; 1015. First disturbance plate; 1016. Guide channel; 2. Filter box; 201. Exhaust pipe; 202. Annular inclined plate; 203. Annular pipe; 204. Atomizing nozzle; 205. Riser; 206. Liquid inlet pipe; 207. Liquid outlet pipe; 208. Second fixed shell; 209. Second rotary motor; 2010. Third gear; 2011. Second rotating rod; 2012. Fourth gear; 2013. Second disturbance plate; 2014. Cross support frame; 3. Support feet. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0018] Example 1: A waste heat utilization device based on hot-dip galvanizing, referring to... Figure 1 , Figure 3 and Figure 4 It includes a water tank 1 and a filter box 2, with the filter box 2 located on the side of the water tank 1; The water tank 1 contains two spiral heat pipes 101 arranged vertically. The inlet ends of both spiral heat pipes 101 are located on the side of the water tank 1 and are fixedly connected to a smoke inlet U-shaped pipe 102. The outlet ends of both spiral heat pipes 101 are located on the other side of the water tank 1 and are fixedly connected to a smoke outlet U-shaped pipe 104. A smoke inlet pipe 103 is provided on the surface of the smoke inlet U-shaped pipe 102, and a connecting pipe 105 is provided on the surface of the smoke outlet U-shaped pipe 104. The outlet end of the connecting pipe 105 is located on the inner side of the filter box 2. A first fixed... A first fixed shell 109 has a first rotary motor 1010 fixedly connected to its side. The output end of the first rotary motor 1010 rotates through the side of the first fixed shell 109 and is fixedly connected to a first gear 1011. Two first rotating rods 1012 are tightly nested on the side of the water tank 1 via bearings. A second gear 1013 is fixedly connected to one end of each first rotating rod 1012. A gear chain 1014 is driven through the surfaces of the first gear 1011 and the second gear 1013. The first rotating rods 1012 are located inside the spiral heat pipe 101. The surface of the first rotating rods 1012 is fixedly connected to the first rotating rod 1012. A plurality of first disturbance plates 1015 are fixedly connected, and the surface of the first disturbance plate 1015 is provided with a guide groove 1016. By setting a first rotary motor 1010, the operation of the first rotary motor 1010 can drive the first gear 1011 to rotate. Through the transmission of the gear chain 1014, the second gear 1013 can be driven to rotate, thereby causing the two first rotating rods 1012 to rotate synchronously. The plurality of first disturbance plates 1015 on the surface of the first rotating rod 1012 rotate accordingly, stirring the water in the water tank 1. This stirring structure can effectively improve the interaction between the water and the spiral heat conduction pipe 101. The heat exchange efficiency is improved, avoiding uneven heat exchange caused by still water. In addition, the water flow formed during the stirring process can reduce local overheating of the inner wall of the water tank 1, extend the service life of the equipment, and ensure a more stable and efficient heat exchange process. In order to enhance the stirring effect, the first disturbance plate 1015 is designed with an arc structure and has several guide grooves 1016 on its surface, which can guide the water flow to form a more complex motion trajectory during rotation. This design not only improves the overall fluidity of the water, but also makes the heat distribution more uniform, thereby further optimizing the heat exchange performance.

[0019] Please see Figure 2 and Figure 3 The water tank 1 is equipped with an inlet pipe 106 at the top and a drain pipe 107 at the bottom. The inlet end of the inlet pipe 106 is connected to an external water pump. By setting the inlet pipe 106 and the drain pipe 107, the water in the water tank 1 can be efficiently renewed and circulated.

[0020] Please see Figure 2 and Figure 4The filter box 2 has three annular inclined plates 202 arranged vertically inside. Three annular tubes 203 are mounted on the surface of the filter box 2, and a second fixed shell 208 is mounted on the top. The three annular inclined plates 202 allow for multi-stage diversion and guidance of the water entering the filter box 2, effectively slowing the water flow. Simultaneously, they block the flow of smoke, further reducing the amount of impurities carried in the smoke entering subsequent treatment stages, thereby improving the overall purification efficiency of the device. They also provide initial sedimentation for the water, allowing larger particles to settle quickly and preventing them from entering the next stage with the water flow, thus reducing the burden on subsequent filtration components. Multiple atomizing nozzles 204 are mounted on the surface of the annular tubes 203, with their output ends located inside the filter box 2. The output ends of the three sets of atomizing nozzles 204 are respectively mounted on the three annular inclined plates. At the bottom of the filter box 202, multiple atomizing nozzles 204 are installed to uniformly atomize the liquid entering the annular pipe 203 and spray it into the filter box 2. The three sets of atomizing nozzles 204 correspond to the bottom positions of the three annular inclined plates 202, which can ensure that the water flow after each stage of diversion can be fully atomized, thereby improving the device's ability to capture fine particulate matter and soluble pollutants. The surface of the three annular pipes 203 is fixedly connected to the riser 205, and the side of the riser 205 is fixedly connected to the liquid inlet pipe 206. The input end of the liquid inlet pipe 206 is connected to the external pump equipment for adding purification liquid. The side of the filter box 2 is provided with a smoke exhaust pipe 201, and the bottom of the filter box 2 is provided with a liquid drain pipe 207. Through the combination structure of the riser 205 and the liquid inlet pipe 206, the purification liquid delivered by the external pump equipment can be uniformly introduced into the three annular pipes 203, ensuring that the liquid flow in each annular pipe 203 is balanced.

[0021] Please see Figure 3 and Figure 5A second rotary motor 209 is mounted on the top of the second fixed housing 208. The output end of the second rotary motor 209 rotates through the top of the second fixed housing 208 and is fixedly connected to a third gear 2010. A second rotating rod 2011 is tightly nested in the top of the filter box 2 via bearings. A fourth gear 2012 is fixedly connected to the top of the second rotating rod 2011. The third gear 2010 and the fourth gear 2012 mesh with each other. Multiple second disturbance plates 2013 are provided on the surface of the second rotating rod 2011. The positions of the multiple second disturbance plates 2013 are respectively located at the bottom of the three annular inclined plates 202. By setting the second rotary motor 209, the operation of the second rotary motor 209 can drive the third gear 2010. The rotation of 010 drives the fourth gear 2012 and the second rotating rod 2011 connected to it to rotate synchronously. Multiple second disturbance plates 2013 rotate with the second rotating rod 2011, which can effectively stir the atomized liquid at the bottom of the three annular inclined plates 202, so that the liquid and air can fully contact each other and further improve the purification effect. A cross support frame 2014 is fixedly connected inside the annular inclined plate 202. The second rotating rod 2011 is rotatably connected inside the cross support frame 2014. By setting the cross support frame 2014, a stable support can be provided for the second rotating rod 2011, ensuring that it remains stable during high-speed rotation and avoiding the normal operation of the equipment due to vibration or displacement.

[0022] Please see Figure 1 Both the water tank 1 and the filter box 2 are fixedly connected to multiple support feet 3 at the bottom. A thermometer 108 and an observation window are provided on the front of the water tank 1. By setting the support feet 3, the stability of the water tank 1 and the filter box 2 can be enhanced, preventing the equipment from shaking or tipping over during operation. The thermometer 108 is set to facilitate real-time monitoring of the temperature changes inside the water tank 1.

[0023] The implementation principle of this application embodiment is as follows: During the operation of the equipment, external water is first introduced into the water tank 1 through the water inlet pipe 106. After the introduction is completed, the smoke flows into the spiral heat conduction pipe 101 through the smoke inlet pipe 103 and the smoke inlet U-shaped pipe 102. Through the action of the spiral heat conduction pipe 101, the high-temperature smoke flowing inside can exchange heat with the water in the water tank 1. At this time, the first rotary motor 1010 drives the first gear 1011 to rotate, and drives the second gear 1013 to operate synchronously through the gear chain 1014. This causes the two first rotating rods 1012 and the first disturbance plate 1015 on their surfaces to stir the water in the water tank 1. This stirring can not only improve the heat exchange efficiency between the water and the spiral heat conduction pipe 101, but also avoid the problem of uneven heat exchange caused by the stillness of the water. After heat exchange is completed, the high-temperature flue gas enters the filter box 2 through the exhaust U-shaped pipe 104. At the same time, the external pump equipment delivers the purified liquid to the riser 205 through the inlet pipe 206 and distributes it evenly into the three annular pipes 203. Subsequently, the atomizing nozzle 204 atomizes the liquid and sprays it onto the bottom area of ​​the corresponding annular inclined plate 202, thereby achieving multi-stage diversion and efficient capture of fine particulate matter. During this process, the second rotary motor 209 starts, driving the third gear 2010, the fourth gear 2012 and the second rotating rod 2011 to rotate, causing multiple second disturbance plates 2013 to stir the atomized liquid, further promoting the contact between the liquid and the air and improving the purification effect. Finally, the treated flue gas is discharged from the exhaust pipe 201, while the liquid containing impurities is discharged from the filter box 2 through the drain pipe 207.

[0024] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waste heat utilization device based on hot-dip galvanizing, comprising a water tank (1) and a filter box (2), characterized in that: The filter box (2) is located on the side of the water tank (1); The water tank (1) is equipped with two spiral heat conduction tubes (101) arranged vertically. The input ends of the two spiral heat conduction tubes (101) are located on the side of the water tank (1) and are fixedly connected to a smoke inlet U-shaped pipe (102). The output ends of the two spiral heat conduction tubes (101) are located on the other side of the water tank (1) and are fixedly connected to a smoke outlet U-shaped pipe (104). A smoke inlet pipe (103) is provided on the surface of the smoke inlet U-shaped pipe (102), and a connecting pipe (105) is provided on the surface of the smoke outlet U-shaped pipe (104). The output end of the connecting pipe (105) is located on the inner side of the filter box (2). A first fixed shell (109) is fixedly connected to the side of the water tank (1). A first rotary motor (1010) is fixedly connected. The output end of the first rotary motor (1010) rotates through the side of the first fixed shell (109) and is fixedly connected to a first gear (1011). The side of the water tank (1) has two first rotating rods (1012) tightly nested by bearings. One end of the first rotating rod (1012) is fixedly connected to a second gear (1013). The surfaces of the first gear (1011) and the second gear (1013) are connected by a gear chain (1014). The first rotating rod (1012) is located inside the spiral heat pipe (101). Multiple first disturbance plates (1015) are fixedly connected to the surface of the first rotating rod (1012). The surface of the first disturbance plate (1015) is provided with a flow guide groove (1016).

2. The waste heat utilization device based on hot-dip galvanizing according to claim 1, characterized in that: The water tank (1) is provided with an inlet pipe (106) at the top and a drain pipe (107) at the bottom. The inlet end of the inlet pipe (106) is connected to an external water pump device.

3. The waste heat utilization device based on hot-dip galvanizing according to claim 1, characterized in that: The filter box (2) is provided with three annular inclined plates (202) inside, and the three annular inclined plates (202) are arranged vertically inside the filter box (2). The surface of the filter box (2) is provided with three annular tubes (203), and the top of the filter box (2) is provided with a second fixed shell (208).

4. The waste heat utilization device based on hot-dip galvanizing according to claim 3, characterized in that: The surface of the annular tube (203) is provided with a plurality of atomizing nozzles (204), the output end of the atomizing nozzles (204) is located inside the filter box (2), and the output ends of the three sets of atomizing nozzles (204) are respectively located at the bottom of the three annular inclined plates (202).

5. The waste heat utilization device based on hot-dip galvanizing according to claim 4, characterized in that: A riser (205) is fixedly connected to the surface of the three annular tubes (203). An inlet pipe (206) is fixedly connected to the side of the riser (205). The input end of the inlet pipe (206) is connected to an external pump for adding purified liquid. A smoke exhaust pipe (201) is provided on the side of the filter box (2). A drain pipe (207) is provided at the bottom of the filter box (2).

6. The waste heat utilization device based on hot-dip galvanizing according to claim 3, characterized in that: A second rotary motor (209) is provided on the top of the second fixed shell (208). The output end of the second rotary motor (209) rotates through the top of the second fixed shell (208) and is fixedly connected to a third gear (2010). A second rotating rod (2011) is tightly nested on the top of the filter box (2) through a bearing. A fourth gear (2012) is fixedly connected to the top of the second rotating rod (2011). The third gear (2010) and the fourth gear (2012) mesh with each other. A plurality of second disturbance plates (2013) are provided on the surface of the second rotating rod (2011). The positions of the plurality of second disturbance plates (2013) are respectively located at the bottom of three annular inclined plates (202).

7. A waste heat utilization device based on hot-dip galvanizing according to claim 6, characterized in that: The annular inclined plate (202) is fixedly connected to a cross support frame (2014), and the second rotating rod (2011) is rotatably connected inside the cross support frame (2014).

8. The waste heat utilization device based on hot-dip galvanizing according to claim 1, characterized in that: The bottom of the water tank (1) and the filter box (2) are both fixedly connected with multiple support feet (3). A thermometer (108) is provided on the front of the water tank (1), and an observation window is provided on the front of the water tank (1).

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