A curing furnace waste heat recycling device

Abstract

The application discloses the technical field of tail gas recycling, and relates to a solidification furnace waste heat recycling device, both ends of the solidification furnace are connected with an inlet assembly and an outlet assembly through conveyer belts respectively, the inlet assembly comprises an inlet box, a heat transfer pipeline and a plurality of heat transfer water pipes, the conveyer belt penetrates through both ends of the inlet box and is located at the middle part of the inlet box, the plurality of heat transfer water pipes are located at the bottom end of the conveyer belt, both ends of the plurality of heat transfer water pipes are communicated with the outside world, the heat transfer pipeline is connected with the gas outlet end of the solidification furnace, the other end of the heat transfer pipeline is communicated with the bottom end of the inlet box, one end of the inlet box away from the heat transfer pipeline is connected with a transportation pipeline, and the transportation pipeline is communicated with the outlet assembly.

Description

Technical Field

[0001] This invention relates to the field of exhaust gas recovery and utilization technology, specifically to a device for recovering and utilizing waste heat from a curing furnace. Background Technology

[0002] In industrial production, curing ovens, as important heat treatment equipment, are widely used for curing various materials. During operation, curing ovens generate a large amount of waste heat exhaust gas, which typically has high temperatures and a certain amount of thermal energy. However, in traditional production processes, this waste heat exhaust gas is often directly released into the atmosphere, wasting valuable thermal energy resources and potentially causing thermal pollution to the environment.

[0003] Currently, with the increasing prominence of energy issues and the continuous improvement of environmental protection requirements, the recovery and utilization of waste heat in industrial production processes has become an urgent need. Waste heat recovery and utilization can not only reduce energy waste and lower production costs, but also reduce thermal pollution to the environment and achieve green production.

[0004] In the field of exhaust gas recovery and utilization technology, although there are some devices and technologies for the recovery and utilization of waste heat exhaust gas in industrial production, these devices and technologies often suffer from low efficiency and low utilization rate when applied to the recovery and utilization of waste heat from curing furnaces. Summary of the Invention

[0005] The present invention aims to provide a waste heat recovery and utilization device for curing furnaces, so as to solve the problem that the existing waste heat and exhaust gas recovery and utilization devices in industrial production have low utilization rates and cannot fully utilize the waste heat and exhaust gas.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a waste heat recovery and utilization device for a curing furnace, comprising a curing furnace, with a feeding component and a discharging component connected to both ends of the curing furnace via conveyor belts, the feeding component comprising a feeding box, a heat transfer pipe and multiple hot water transfer pipes, the conveyor belt passing through both ends of the feeding box and located in the middle of the feeding box, the multiple hot water transfer pipes located at the bottom end of the conveyor belt, both ends of the multiple hot water transfer pipes being connected to the outside, the heat transfer pipe being connected to the air outlet of the curing furnace, the other end of the heat transfer pipe being connected to the bottom end of the feeding box, and a transport pipe being connected to the end of the feeding box away from the heat transfer pipe, the transport pipe being connected to the discharging component.

[0007] Working principle of this invention: During the operation of the curing oven, waste heat exhaust gas is generated. At this time, the waste heat exhaust gas enters the feeding box through the heat transfer pipe. The waste heat exhaust gas passes through multiple hot water transfer pipes, which are heated at the same time. Simultaneously, the conveyor belt in the feeding box is heated, so the product parts in the feeding box can be preheated. After the waste heat exhaust gas has finished heating the multiple hot water transfer pipes, the temperature drops. At this time, the waste heat exhaust gas reaches the discharging box through the transport pipe. The lower temperature waste heat exhaust gas cools the cured product parts on the conveyor belt with hot air.

[0008] Furthermore, a filter screen is connected to the bottom of the feed box, and the filter screen is connected to the heat transfer pipe, located at one end of multiple heat transfer pipes. The filter screen allows for the filtration of residues and fine particles contained in the waste heat exhaust gas.

[0009] Furthermore, the heat transfer pipe is arranged diagonally between the curing oven and the feed box. This diagonal design allows waste heat and exhaust gases to be transferred to the feed box more quickly.

[0010] Furthermore, the discharge assembly includes a discharge box and a venting plate. The conveyor belt passes through both ends of the discharge box and is located in the middle of the discharge box. The venting plate is connected to the inner bottom of the discharge box and is located at the bottom of the conveyor belt. The venting plate is provided with through holes. The transport pipe is connected to the bottom of the discharge box. The venting plate allows the conveyor belt inside the discharge box to receive air evenly.

[0011] Furthermore, multiple hot water transfer pipes are connected in series to form a single circuit. By connecting multiple hot water transfer pipes in series, the water flow time within the pipes is increased, resulting in a longer heating time.

[0012] Furthermore, the outlet end of the hot water transfer pipe is close to the filter screen, and the inlet end is close to the transport pipe. By determining the positions of the inlet and outlet ends of the hot water transfer pipe, the water inside the pipe can be heated to the maximum extent.

[0013] The beneficial effects of this invention are as follows: 1. This invention achieves effective recovery and utilization of waste heat generated during the operation of the curing oven. The device uses the waste heat for multiple processes, including water heating, product preheating, and finished product cooling, achieving a three-in-one effect and significantly improving the utilization rate of the waste heat. 2. Because the waste heat is fully utilized, the demand for external energy in traditional production processes is reduced, thereby lowering production costs. Simultaneously, preheating the product to be cured shortens the curing time, further improving production efficiency. 3. This device effectively reduces the direct emission of waste heat, avoiding thermal pollution and energy waste, and meeting the current requirements of green production and environmental protection and energy conservation. Carbon emissions are reduced through the recovery and utilization of waste heat. 4. The device has a compact structure, is easy to install and maintain, and is suitable for curing ovens of different sizes and types. Furthermore, by adjusting the parameters of components such as the hot water transfer pipes and transport pipes, it can adapt to the waste heat recovery and utilization needs under different production conditions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a waste heat recovery and utilization device for a curing furnace according to the present invention;

[0015] Figure 2 for Figure 1 Schematic diagram of the structure of the discharge box;

[0016] Figure 3 for Figure 1 A schematic diagram of the feed box structure. Detailed Implementation

[0017] The following detailed description illustrates the specific implementation method:

[0018] The reference numerals in the accompanying drawings include: discharge assembly 1, discharge box 101, vent plate 102, through hole 103, curing oven 2, heat transfer pipe 3, feeding assembly 4, feeding box 401, filter bag 402, hot water transfer pipe 403, conveyor belt 5, and transport pipe 6.

[0019] The basic implementation examples are as follows: Figure 1 - Appendix Figure 3As shown: A waste heat recovery and utilization device for a curing oven includes a curing oven 2, a feeding assembly 4, and a discharging assembly 1. A conveyor belt 5 is slidably connected through the middle of the curing oven 2, the feeding assembly 4, and the discharging assembly 1. The feeding assembly 4 includes a feeding box 401, a heat transfer pipe 3, and a hot water transfer pipe 403. The conveyor belt 5 passes through both ends of the feeding box 401. A filter screen 402 is fixedly connected to the bottom left side of the feeding box 401. The hot water transfer pipe 403 is fixedly connected to the bottom inner end of the feeding box 401 and located at the bottom end of the conveyor belt 5. The hot water transfer pipe 403 is arranged in a spiral shape from left to right. Both ends of the heat transfer pipe 403 are connected to the outside. The left end of the heat transfer pipe 403 is the water outlet, which is close to the filter screen 402. The right end of the heat transfer pipe 403 is the water inlet. The heat transfer pipe 3 is connected to the air outlet of the curing oven 2. The other end of the heat transfer pipe 3 is connected to the bottom of the feed box 401. The heat transfer pipe 3 is fixedly connected between the curing oven 2 and the feed box 401 in an oblique line. The heat transfer pipe 3 is connected to the filter screen 402. The bottom right side of the feed box 401 is fixedly connected to the transport pipe 6, which is close to the water outlet of the heat transfer pipe 403.

[0020] The discharge assembly 1 includes a discharge box 101 and a vent plate 102. The conveyor belt 5 passes through both ends of the discharge box 101. The vent plate 102 is fixedly connected to the inner bottom of the discharge box 101. The vent plate 102 is located at the bottom of the conveyor belt 5. The vent plate 102 is provided with through holes 103. The transport pipe 6 is connected to the bottom of the discharge box 101.

[0021] The specific implementation process is as follows: During the operation of the curing oven 2, waste heat exhaust gas is generated. At this time, the waste heat exhaust gas will enter the feed box 401 through the heat transfer pipe 3. The waste heat exhaust gas is filtered once through the filter screen 402 and transported from the outlet end of the hot water pipe 403. At this time, the hot water pipe 403 is heated, and at the same time, the conveyor belt 5 in the feed box 401 is heated. The product parts in the feed box 401 can be preheated. After the waste heat exhaust gas is heated, the temperature of the hot water pipe 403 decreases. The heated hot water flows out from the outlet end to continue heating. At this time, the waste heat exhaust gas reaches the discharge box 101 through the transport pipe 6. The lower temperature waste heat exhaust gas is evenly cooled by hot air through the through holes 103 on the vent plate 102.

[0022] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A device for recovering and utilizing waste heat from a curing oven, comprising a curing oven, characterized in that: The curing oven has a feeding assembly and a discharging assembly connected to its two ends via conveyor belts. The feeding assembly includes a feeding hopper, a heat transfer pipe, and multiple hot water transfer pipes. The conveyor belt runs through both ends of the feeding hopper and is located in the middle of the hopper. The multiple hot water transfer pipes are located at the bottom of the conveyor belt, with both ends connected to the outside. The heat transfer pipe is connected to the air outlet of the curing oven, and the other end of the heat transfer pipe is connected to the bottom of the feeding hopper. A transport pipe is connected to the end of the feeding hopper furthest from the heat transfer pipe, and the transport pipe is connected to the discharging assembly. A filter bag is connected to the bottom of the feeding hopper. The heat transfer system is connected to the heat transfer pipes, with the filter screen located at one end of multiple heat transfer pipes. The heat transfer pipes are arranged diagonally between the curing oven and the feed box. The discharge assembly includes a discharge box and a venting plate. The conveyor belt passes through both ends of the discharge box and is located in the middle of the discharge box. The venting plate is connected to the inner bottom of the discharge box and is located at the bottom of the conveyor belt. The venting plate has through holes. The transport pipe is connected to the bottom of the discharge box. Multiple heat transfer pipes are connected in series to form a single passage. The outlet end of the heat transfer pipe is close to the filter screen, and the inlet end of the heat transfer pipe is close to the transport pipe.

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