Waste heat recycling device of glass bead heating furnace

Abstract

The utility model discloses a waste heat recycling device of a glass bead heating furnace, which comprises a heating furnace body for heating glass beads, and relates to the technical field of waste heat utilization of heating furnaces. According to the waste heat recycling device for the glass bead heating furnace, smoke can be filtered and waste heat of the smoke can be utilized through a second connecting pipe and a first filter screen, and when the waste heat recycling device is used, the smoke generated by fuel in a heating cavity of the heating furnace body can be exhausted into a placing frame through an exhaust pipe; dust and pollutants in the flue gas are filtered through a first filter screen and a second filter screen, then part of the flue gas flows into an annular pipe through an air inlet pipe and is sprayed out from an anti-backflow pipe, the heat efficiency of the heating furnace body is improved, and the other part of the flue gas is discharged out of the device through a second connecting pipe; and when the flue gas is exhausted through the second connecting pipe, cooling water in the water storage tank is heated, heat in the flue gas is recycled, and meanwhile unnecessary heat pollution to the surrounding environment is avoided.

Description

Technical Field

[0001] This utility model relates to the field of waste heat utilization technology of heating furnaces, specifically a waste heat reuse device for glass microsphere heating furnaces. Background Technology

[0002] Waste heat utilization in heating furnaces is a type of equipment specifically designed for heating products and workpieces. Waste heat utilization in glass microsphere heating furnaces is a type of equipment that uses a high-temperature environment to heat glass microspheres, thereby enhancing their hardness and making them more wear-resistant, thus making them suitable for a wider range of applications. However, during the production of glass microspheres, a large amount of waste heat is generated during the waste heat utilization process. If this waste heat cannot be effectively utilized, it will not only result in energy waste.

[0003] Referring to patent application CN215336441U, a boiler waste heat recovery device is disclosed, comprising a heating plate installed inside the boiler cavity to heat the water inside the boiler to generate steam; an ash collection cylinder installed at the bottom of the boiler cavity to collect ash generated during fuel combustion, with a ventilation pipe and an ash discharge pipe on the outside of the ash collection cylinder; and an energy storage mechanism that uses the steam generated by the boiler to drive a generator to generate electricity and store electrical energy. The boiler waste heat recovery device uses steam to generate electricity and heat cooling water, ensuring full utilization of steam and more effectively utilizing boiler waste heat.

[0004] However, the above-mentioned technology uses steam generated from hot water to generate electricity and heat cooling water, thus recovering and utilizing waste heat. In contrast, most existing devices filter the flue gas directly after combustion, making it difficult to recover and utilize the heat in the flue gas. This results in heat waste and unnecessary thermal pollution to the surrounding environment, making it generally impractical. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a waste heat recovery device for glass microsphere heating furnaces. This solves the problem that existing waste heat recovery devices for glass microsphere heating furnaces are not convenient for recovering and utilizing heat from flue gas, which leads to heat waste, causes unnecessary thermal pollution to the surrounding environment, and has limited practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waste heat recovery device for a glass microsphere heating furnace, comprising a furnace body for heating glass microspheres, including:

[0007] A heat recovery assembly is disposed on the outside of the heating furnace body. The heat recovery assembly includes a water storage tank fixedly installed at the top of the outside of the heating furnace body for storing cooling water. A first connecting pipe is provided inside the water storage tank and outside the heating furnace body, which can communicate with the inside of the heating furnace body. When the first connecting pipe is connected to the inside of the heating furnace body, high-temperature hot gas flows through the first connecting pipe. A rack is fixedly installed on the bottom surface of the inner cavity of the heating furnace body for placing fuel.

[0008] The flue gas recovery assembly is installed on the outside of the heating furnace body to utilize the waste heat in the flue gas to heat the cooling water, and can improve the thermal efficiency of the heating furnace body.

[0009] Preferably, the flue gas recovery assembly includes a fixed box disposed outside the heating furnace body. The fixed box is divided into a first space away from the heating furnace body and a second space close to the heating furnace body by a movable placement frame. A first filter screen for filtering pollutants in the high-temperature hot gas and a second filter screen for filtering dust in the high-temperature hot gas are fixedly installed in the inner cavity of the placement frame. The second space is connected to the heating furnace body through an exhaust pipe. The first space is connected to a second connecting pipe. The second connecting pipe passes through the fixed box and extends into the water storage tank. The second connecting pipe located in the water storage tank is spiral-shaped to increase the contact area with the cooling water, thereby improving its heat transfer efficiency.

[0010] Preferably, the second space is also connected to an air inlet pipe, and the end of the air inlet pipe away from the second space is connected to an annular pipe installed on the top surface of the placement frame. Several anti-backflow pipes are fixedly installed on the top surface of the annular pipe. The anti-backflow pipes are used to spray out the high-temperature hot air in the first space after being filtered by the first filter and the second filter.

[0011] Preferably, the front side of the placement frame extends through the interior of the fixed box and reaches the front side of the fixed box, and the placement frame is fixed inside the fixed box by a snap fastener.

[0012] Preferably, the heat recovery assembly further includes a storage cylinder fixedly installed inside the heating furnace body. The storage cylinder contains heating material and filter material for filtering harmful gases in the high-temperature hot gas. The filter material can adsorb harmful gases generated by the heated glass microspheres inside the heating furnace body. A vent pipe communicating with the inside of the storage cylinder is fixedly installed on the top surface of the storage cylinder, and the vent pipe is connected to the first connecting pipe. A thermometer for monitoring the temperature of the cooling water inside the water storage tank is fixedly installed on the right side of the top surface of the heating furnace body. A water filling pipe communicating with the first connecting pipe is fixedly installed on the top surface of the water storage tank. A drain valve pipe for discharging the cooled water after heating is fixedly installed on the right side of the water storage tank.

[0013] Preferably, the first connecting pipe is spirally installed inside the water storage tank to increase the contact area with the cooling water and improve its heat transfer efficiency. The bottom end of the first connecting pipe penetrates the interior of the water storage tank and extends to the bottom surface of the water storage tank for discharging hot air. The right end of the vent pipe penetrates the interior of the heating furnace body and the top surface of the water storage tank and is connected to the top end of the first connecting pipe for transporting hot air. The sensing end of the thermometer penetrates the top surface of the water storage tank and extends into the interior of the water storage tank.

[0014] This invention provides a device for reusing waste heat from a glass microsphere heating furnace. Compared with the prior art, it has the following advantages:

[0015] (1) The waste heat recovery device of the glass microsphere heating furnace can filter the flue gas and utilize the waste heat of the flue gas through the second connecting pipe and the first filter screen. When in use, the flue gas generated by the fuel in the heating chamber of the heating furnace body will be discharged into the interior of the placement frame through the exhaust pipe, and the dust and pollutants in the flue gas will be filtered out through the first filter screen and the second filter screen. Then, part of the flue gas will flow into the annular pipe through the air inlet pipe and be sprayed out from the anti-backflow pipe to further utilize this part of the heat and improve the thermal efficiency of the heating furnace body. Another part of the flue gas will be discharged outside the device through the second connecting pipe. When the flue gas is discharged through the second connecting pipe, it will pass through the interior of the water storage tank and use the waste heat to heat the cooling water in the water storage tank. The heat in the flue gas can be recovered and utilized to avoid the waste of heat and avoid unnecessary thermal pollution to the surrounding environment.

[0016] (2) The waste heat recovery device of the glass microsphere heating furnace can use the heat in the hot air to heat the cooling water through the set vent pipe and the first connecting pipe. When in use, the hot air generated by heating the glass microsphere will enter the interior of the first connecting pipe through the vent pipe and then be discharged from the device. When the hot air passes through the first connecting pipe, it will come into contact with the cooling water in the water storage tank. At this time, the waste heat in the hot air can be used to heat the cooling water, avoiding the waste of heat and making it practical. Attached Figure Description

[0017] Figure 1 This is a right-view stereoscopic view of the present invention;

[0018] Figure 2 This is a left-side stereoscopic view of the present invention.

[0019] Figure 3 This is a front cross-sectional perspective view of the present invention.

[0020] Figure 4 This is a partial cross-sectional three-dimensional appearance diagram of the present invention.

[0021] In the diagram: 1-Heating furnace body, 21-Heat gas recovery component, 211-Water storage tank, 212-Thermometer, 213-Vent pipe, 214-First connecting pipe, 215-Drain valve pipe, 216-Material storage cylinder, 217-Placement rack, 218-Water supply pipe, 22-Flue gas recovery component, 221-Air inlet pipe, 222-Fixing box, 223-Placement frame, 224-Second connecting pipe, 225-Exhaust pipe, 226-Anti-backflow pipe, 227-Annular pipe, 228-First filter screen, 229-Second filter screen. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] See Figures 1-4 This utility model provides two technical solutions:

[0024] First embodiment: A waste heat recovery device for a glass microsphere heating furnace, comprising a heating furnace body 1 for heating glass microspheres, wherein the heating furnace body 1 is an existing device for heating glass microspheres, and will not be described in detail here, including:

[0025] A heat recovery assembly 21 is disposed on the outside of the heating furnace body 1. The heat recovery assembly 21 includes a water storage tank 211 fixedly installed on the top of the outside of the heating furnace body 1 for storing cooling water. A first connecting pipe 214 is provided inside the water storage tank 211 and outside the heating furnace body 1, which can communicate with the inside of the heating furnace body 1. When the first connecting pipe 214 is connected to the inside of the heating furnace body 1, high-temperature hot gas flows through the first connecting pipe 214. A placement rack 217 is fixedly installed on the bottom surface of the inner cavity of the heating furnace body 1 for placing fuel.

[0026] The flue gas recovery assembly 22, located outside the furnace body 1, is used to heat cooling water using waste heat from the flue gas and can improve the thermal efficiency of the furnace body 1. The flue gas recovery assembly 22 includes a fixed box 222 located outside the furnace body 1. The fixed box 222 is divided into a first space away from the furnace body 1 and a second space near the furnace body 1 by a movable placement frame 223. A first filter screen 228 for filtering pollutants in the high-temperature hot gas and a second filter screen 229 for filtering dust in the high-temperature hot gas are fixedly installed inside the placement frame 223. The second space is connected to the furnace body 1 via an exhaust pipe 225, and flue gas can enter the interior of the fixed box 222 through the exhaust pipe 225 and be filtered by the first filter screen 228 and the second filter screen 229. The first space is connected by a second connecting pipe 224. The connecting pipe 224 passes through the fixed box 222 and extends into the water storage tank 211. The second connecting pipe 224 located in the water storage tank 211 is spiral-shaped to increase the contact area with the cooling water and thus improve its heat transfer efficiency. The second space is also connected to the air inlet pipe 221. The end of the air inlet pipe 221 away from the second space is connected to the annular pipe 227 installed on the top surface of the placement frame 217. Several anti-backflow pipes 226 are fixedly installed on the top surface of the annular pipe 227, and the several anti-backflow pipes 226 are evenly distributed in a circle on the top surface of the annular pipe 227. The anti-backflow pipes 226 are used to spray out the high-temperature hot air filtered by the first filter screen 228 and the second filter screen 229 in the first space. The front side of the placement frame 223 moves through the interior of the fixed box 222 and extends to the front side of the fixed box 222. The placement frame 223 is fixed inside the fixed box 222 by a buckle.

[0027] The flue gas can be filtered and its waste heat can be utilized through the second connecting pipe 224 and the first filter screen 228. During use, the flue gas generated by the fuel in the heating chamber of the furnace body 1 will be discharged into the interior of the placement frame 223 through the exhaust pipe 225, and the dust and pollutants in the flue gas will be filtered out by the first filter screen 228 and the second filter screen 229. Then, part of the flue gas will flow into the annular pipe 227 through the air inlet pipe 221 and be sprayed out from the anti-backflow pipe 226, further utilizing this part of the heat to improve the thermal efficiency of the furnace body 1. Another part of the flue gas will be discharged outside the device through the second connecting pipe 224. When the flue gas is discharged through the second connecting pipe 224, it will pass through the interior of the water storage tank 211 and use the waste heat to heat the cooling water in the water storage tank 211. The heat in the flue gas can be recovered and utilized, avoiding heat waste and unnecessary thermal pollution to the surrounding environment.

[0028] The second embodiment differs from the first embodiment in that: the heat recovery assembly 21 further includes a storage cylinder 216 fixedly installed inside the heating furnace body 1, and a sealing door on the front side of the storage cylinder 216 penetrates the interior of the heating furnace body 1 and extends to the front side of the heating furnace body 1. The storage cylinder 216 contains heating material and filter material for filtering harmful gases in the high-temperature hot gas. The filter material can adsorb harmful gases generated by the heated glass microspheres inside the heating furnace body 1. A vent pipe 213 communicating with the inside of the storage cylinder 216 is fixedly installed on the top surface of the storage cylinder 216, and the vent pipe 213 is connected to the first connecting pipe 214. A thermometer 212 for monitoring the temperature of the cooling water inside the water storage tank 211 is fixedly installed on the right side of the top surface of the heating furnace body 1, and a thermometer 212 communicating with the first connecting pipe 214 is fixedly installed on the top surface of the water storage tank 211. The water supply pipe 218 is connected to the connecting pipe 214. A drain valve pipe 215 for discharging the cooling water after heating is fixedly installed on the right side of the water storage tank 211. The first connecting pipe 214 is spirally installed inside the water storage tank 211 to increase the contact area with the cooling water and improve its heat transfer efficiency. The bottom end of the first connecting pipe 214 penetrates the interior of the water storage tank 211 and extends to the bottom surface of the water storage tank 211 for discharging hot air. The right end of the vent pipe 213 penetrates the interior of the heating furnace body 1 and the top surface of the water storage tank 211 and is connected to the top end of the first connecting pipe 214 for transporting hot air. The sensing end of the thermometer 212 penetrates the top surface of the water storage tank 211 and extends to the interior of the water storage tank 211. The model of the water storage tank 211 is not specifically required for monitoring the water temperature inside the water storage tank 211.

[0029] The vent pipe 213 and the first connecting pipe 214 can be used to heat the cooling water. When in use, the hot air generated by heating the glass microspheres will enter the interior of the first connecting pipe 214 through the vent pipe 213 and then be discharged from the device. When the hot air passes through the first connecting pipe 214, it will come into contact with the cooling water in the water storage tank 211. At this time, the residual heat in the hot air can be used to heat the cooling water, avoiding heat waste and making it practical.

[0030] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0031] In use, open the sealed door of the storage cylinder 216 and place the glass microspheres inside the storage cylinder 216. Then close the sealed door. Next, open the discharge door of the heating furnace body 1 and place the fuel on top of the placement rack 217 to heat the glass microspheres inside the storage cylinder 216. At this time, the flue gas generated by the fuel in the heating chamber of the heating furnace body 1 will be discharged into the placement frame 223 through the exhaust pipe 225, and the dust and pollutants in the flue gas will be filtered out by the first filter screen 228 and the second filter screen 229. Then, part of the flue gas will flow into the annular pipe 227 through the inlet pipe 221 and exit through the anti-backflow pipe 22. 6. The exhaust gas is further utilized to improve the thermal efficiency of the heating furnace body 1. Another part of the flue gas will be discharged outside the device through the second connecting pipe 224. When the flue gas is discharged through the second connecting pipe 224, it will pass through the interior of the water storage tank 211 and use the residual heat to heat the cooling water in the water storage tank 211. The hot gas generated by heating the glass microspheres will enter the interior of the first connecting pipe 214 through the vent pipe 213 and then be discharged from the device. When the hot gas passes through the first connecting pipe 214, it will come into contact with the cooling water in the water storage tank 211. At this time, the residual heat in the hot gas can heat the cooling water.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for a glass microsphere heating furnace, comprising a furnace body (1) for heating glass microspheres, characterized in that: include: A heat recovery assembly (21) is disposed on the outside of the heating furnace body (1). The heat recovery assembly (21) includes a water storage tank (211) fixedly installed on the top of the outside of the heating furnace body (1) for storing cooling water. A first connecting pipe (214) is provided inside the water storage tank (211) and outside the heating furnace body (1) for communicating with the inside of the heating furnace body (1). When the first connecting pipe (214) is connected to the inside of the heating furnace body (1), high-temperature hot gas flows through the first connecting pipe (214). A placement rack (217) is fixedly installed on the bottom surface of the inner cavity of the heating furnace body (1) for placing fuel. The flue gas recovery component (22) is installed on the outside of the heating furnace body (1) to use the residual heat in the flue gas to heat the cooling water and can improve the thermal efficiency of the heating furnace body (1).

2. The waste heat recovery device for a glass microsphere heating furnace according to claim 1, characterized in that: The flue gas recovery assembly (22) includes a fixed box (222) located outside the heating furnace body (1). The fixed box (222) is divided into a first space away from the heating furnace body (1) and a second space close to the heating furnace body (1) by a movable placement frame (223). A first filter screen (228) for filtering pollutants in high-temperature hot gas and a second filter screen (229) for filtering dust in high-temperature hot gas are fixedly installed in the inner cavity of the placement frame (223). The second space is connected to the heating furnace body (1) through an exhaust pipe (225). The first space is connected to a second connecting pipe (224). The second connecting pipe (224) passes through the fixed box (222) and extends into the water storage tank (211). The second connecting pipe (224) located in the water storage tank (211) is spiral-shaped to increase the contact area with the cooling water and thus improve its heat transfer efficiency.

3. The waste heat recovery device for a glass microsphere heating furnace according to claim 2, characterized in that: The second space is also connected to an air inlet pipe (221). The end of the air inlet pipe (221) away from the second space is connected to an annular pipe (227) installed on the top surface of the placement rack (217). Several anti-backflow pipes (226) are fixedly installed on the top surface of the annular pipe (227). The anti-backflow pipes (226) are used to spray out the high-temperature hot air in the first space that has been filtered by the first filter screen (228) and the second filter screen (229).

4. The waste heat recovery device for a glass microsphere heating furnace according to claim 2, characterized in that: The front side of the placement frame (223) extends through the interior of the fixed box (222) and to the front side of the fixed box (222). The placement frame (223) is fixed inside the fixed box (222) by a snap fastener.

5. The waste heat recovery device for a glass microsphere heating furnace according to claim 1, characterized in that: The heat recovery assembly (21) also includes a storage cylinder (216) fixedly installed inside the heating furnace body (1). The storage cylinder (216) contains heating material and filter material for filtering harmful gases in high-temperature hot gas. The filter material can adsorb harmful gases generated by heating glass microspheres inside the heating furnace body (1). A vent pipe (213) communicating with the inside of the storage cylinder (216) is fixedly installed on the top surface of the storage cylinder (216). The vent pipe (213) is connected to the first connecting pipe (214). A thermometer (212) for monitoring the temperature of the cooling water inside the water storage tank (211) is fixedly installed on the right side of the top surface of the heating furnace body (1). A water supply pipe (218) communicating with the first connecting pipe (214) is fixedly installed on the top surface of the water storage tank (211). A drain valve pipe (215) for discharging the cooling water after heating is fixedly installed on the right side of the water storage tank (211).

6. The waste heat recovery device for a glass microsphere heating furnace according to claim 5, characterized in that: The first connecting pipe (214) is spirally installed inside the water storage tank (211) to increase the contact area with the cooling water and improve its heat transfer efficiency. The bottom end of the first connecting pipe (214) penetrates the interior of the water storage tank (211) and extends to the bottom surface of the water storage tank (211) to discharge hot air. The right end of the vent pipe (213) penetrates the interior of the heating furnace body (1) and the top surface of the water storage tank (211) and is connected to the top end of the first connecting pipe (214) to transport hot air. The sensing end of the thermometer (212) penetrates the top surface of the water storage tank (211) and extends to the interior of the water storage tank (211).

Images