Curing oven waste heat recycling device

Abstract

The invention discloses a curing oven waste heat recycling device in the technical field of tail gas recycling, the two ends of a curing oven are connected with a feeding assembly and a discharging assembly through conveying belts correspondingly, the feeding assembly comprises a feeding box, a heat transfer pipeline and a plurality of heat transfer water pipes, and the conveying belts penetrate through the two ends of the feeding box and are located in the middle of the feeding box; the multiple heat transfer water pipes are located at the bottom end of the conveying belt, the two ends of each heat transfer water pipe communicate with the outside, the heat transfer pipeline is connected with the air outlet end of the curing oven, the other end of the heat transfer pipeline communicates with the bottom end of the feeding box, and the end, away from the heat transfer pipeline, of the feeding box is connected with a conveying pipeline which communicates with the discharging assembly. A tail gas running path with one path to the bottom is adopted, hot gas is subjected to water heating, meanwhile, a product to be cured is preheated, the heated and utilized tail gas is conveyed to the discharging box to cool a machined object, and three purposes are achieved through one gas.

Description

Technical Field

[0001] The invention relates to the technical field of tail gas recovery and utilization, and in particular to a curing furnace waste heat recovery and utilization device. Background Art

[0002] In the industrial production process, curing furnace is an important heat treatment equipment, which is widely used in the curing treatment of various materials. Curing furnace will generate a lot of waste heat exhaust gas during operation, which usually has a high temperature and a certain amount of thermal energy. However, in the traditional production process, these waste heat exhaust gases are often directly discharged into the atmosphere, which not only wastes precious thermal energy resources, but also may cause thermal pollution to the environment.

[0003] At present, 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 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 from industrial production, these devices and technologies often have problems of 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 curing furnace waste heat recovery and utilization device to solve the problem that the existing industrial production waste heat tail gas recovery and utilization devices have low utilization rates and cannot fully utilize the waste heat tail gas.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a curing furnace waste heat recovery device, including a curing furnace, wherein the two ends of the curing furnace are respectively connected with a feed assembly and a discharge assembly through a conveyor belt, the feed assembly includes a feed box, a heat transfer pipe and a plurality of hot water pipes, the conveyor belt passes through the two ends of the feed box and is located in the middle of the feed box, the plurality of hot water pipes are located at the bottom end of the conveyor belt, both ends of the plurality of hot water pipes are connected to the outside world, the heat transfer pipe is connected to the air outlet end of the curing furnace, the other end of the heat transfer pipe is connected to the bottom end of the feed box, the end of the feed box away from the heat transfer pipe is connected to a transport pipe, and the transport pipe is connected to the discharge assembly.

[0007] The working principle of the present invention is as follows: waste heat exhaust gas is generated during the operation of the curing furnace. At this time, the waste heat exhaust gas will enter the feed box through the heat transfer pipe, and the waste heat exhaust gas passes through multiple hot water transfer pipes. At this time, the hot water transfer pipes are heated, and at the same time, the conveyor belt part in the feed box is heated, and the product parts passing through the feed box can be heated in advance. After the waste heat exhaust gas heats multiple hot water transfer pipes, the temperature drops. At this time, the waste heat exhaust gas reaches the discharge box through the transportation pipe, and the waste heat exhaust gas with a lower temperature uses hot air to cool the product parts that have been cured on the conveyor belt.

[0008] Furthermore, a filter net bag is connected to the bottom end of the feed box, the filter net bag is connected to the heat transfer pipeline, and the heat transfer net bag is located at one end of the plurality of heat transfer water pipes. Through the setting of the filter net bag, the residue and fine particles contained in the waste heat tail gas can be filtered.

[0009] Furthermore, the heat transfer pipe is arranged in an oblique line and connected between the curing furnace and the feed box. Through the arrangement of the shape of the heat transfer pipe, the waste heat tail gas can be transferred to the feed box more quickly.

[0010] Furthermore, the discharge assembly includes a discharge box and a ventilation plate, the conveyor belt passes through both ends of the discharge box and is located in the middle of the discharge box, the ventilation plate is connected to the inner bottom end of the discharge box, the ventilation plate is located at the bottom end of the conveyor belt, through holes are provided on the ventilation plate, and the transport pipeline is connected to the bottom of the discharge box. Through the provision of the ventilation plate, the conveyor belt in the discharge box can be evenly exposed to wind.

[0011] Furthermore, a plurality of the heat transfer pipes are connected in series to form a passage. By connecting a plurality of heat transfer pipes in series, the time for water to flow in the pipes is increased, and the water is heated for a longer time.

[0012] Furthermore, the outlet of the hot water transfer pipe is close to the filter net bag, and the inlet of the hot water transfer pipe is close to the transport pipeline. By determining the positions of the inlet and outlet of the hot water transfer pipe, the water in the hot water transfer pipe can be heated to the maximum extent.

[0013] Beneficial effects of the present invention: 1. The present invention realizes the effective recovery and utilization of waste heat tail gas generated during the operation of the curing furnace. The device uses waste heat tail gas for multiple links such as water heating, product preheating and finished product cooling, achieving the effect of three uses of one gas, and significantly improving the utilization rate of waste heat tail gas. 2. Since the waste heat tail gas is fully utilized, the demand for external energy in the traditional production process is reduced, thereby reducing production costs. At the same time, by preheating the product to be cured, the curing time can be shortened and production efficiency can be further improved. 3. The device effectively reduces the direct emission of waste heat tail gas, avoids thermal pollution and energy waste, and meets the current requirements of green production and environmental protection and energy conservation. By recycling and utilizing waste heat tail gas, carbon emissions are reduced. 4. The device has a compact structure, is easy to install and maintain, and is suitable for curing furnaces of different sizes and types. At the same time, by adjusting the parameters of components such as heat transfer pipes and transport pipelines, it can adapt to the needs of waste heat recovery and utilization under different production conditions. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 for Figure 1 Structural schematic diagram of the middle discharge box;

[0016] Figure 3 for Figure 1 Schematic diagram of the structure of the middle feed box. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods:

[0018] The figure marks in the drawings of the specification include: discharge assembly 1, discharge box 101, air permeable plate 102, through hole 103, curing furnace 2, heat transfer pipe 3, feed assembly 4, feed box 401, filter net bag 402, hot water transfer pipe 403, conveyor belt 5, and transportation pipe 6.

[0019] The embodiment is basically as shown in the attached Figure 1 -Attached Figure 3As shown: a curing furnace waste heat recovery device, including a curing furnace 2, a feed assembly 4 and a discharge assembly 1, the curing furnace 2, the feed assembly 4 and the discharge assembly 1 are penetrated by a conveyor belt 5 in a sliding connection in the middle, the feed assembly 4 includes a feed box 401, a heat transfer pipeline 3 and a hot water transfer pipe 403, the conveyor belt 5 passes through both ends of the feed box 401, the left bottom end of the feed box 401 is fixedly connected with a filter net bag 402, the hot water transfer pipe 403 is fixedly connected to the inner bottom end of the feed box 401 and is located at the bottom end of the conveyor belt 5, and the hot water transfer pipe 403 is spirally arranged from left to right Both ends of the hot water transfer pipe 403 are connected to the outside world. The left end of the hot water transfer pipe 403 is the water outlet end, which is close to the filter net bag 402. The right end of the hot water transfer pipe 403 is the water inlet end. The heat transfer pipe 3 is connected to the air outlet end of the curing furnace 2. The other end of the heat transfer pipe 3 is connected to the bottom end of the feed box 401. The heat transfer pipe 3 is arranged in an oblique line and is fixedly connected between the curing furnace 2 and the feed box 401. The heat transfer pipe 3 is connected to the filter net bag 402. The right bottom end of the feed box 401 is fixedly connected with a transport pipe 6, which is close to the water outlet end of the hot water transfer pipe 403.

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

[0021] The specific implementation process is as follows: waste heat exhaust gas is generated during the operation of the curing furnace 2. At this time, the waste heat exhaust gas will enter the feed box 401 through the heat transfer pipe 3, and the waste heat exhaust gas will be filtered once through the filter net bag 402, and will be transported from the water outlet end of the hot water transfer pipe 403. At this time, the hot water transfer pipe 403 is heated, and at the same time, the conveyor belt 5 in the feed box 401 is heated, and the product parts passing through the feed box 401 can be heated in advance. After the waste heat exhaust gas is heated, the temperature of the hot water transfer pipe 403 decreases, and the heated hot water flows out from the water outlet end for heating. At this time, the waste heat exhaust gas reaches the discharge box 101 through the transportation pipe 6, and the waste heat exhaust gas with lower temperature passes through the through holes 103 on the air permeable plate 102 to evenly cool the cured product parts on the conveyor belt 5 with hot air.

[0022] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A curing furnace waste heat recovery device, comprising a curing furnace, characterized in that: The two ends of the curing furnace are respectively connected with a feeding assembly and a discharging assembly through a conveyor belt. The feeding assembly includes a feeding box, a heat transfer pipe and a plurality of hot water transfer pipes. The conveyor belt runs through the two ends of the feeding box and is located in the middle of the feeding box. The plurality of hot water transfer pipes are located at the bottom end of the conveyor belt. Both ends of the plurality of hot water transfer pipes are connected with the outside world. The heat transfer pipe is connected with the air outlet end of the curing furnace, and the other end of the heat transfer pipe is connected with the bottom end of the feeding box. The end of the feeding box away from the heat transfer pipe is connected with a transport pipe, and the transport pipe is connected with the discharging assembly.

2. The device for recovering waste heat from a curing furnace according to claim 1, characterized in that: The bottom end of the feed box is connected with a filter net bag, which is communicated with the heat transfer pipeline. The heat transfer net bag is located at one end of a plurality of hot water transfer pipes.

3. The device for recovering waste heat from a curing furnace according to claim 2, characterized in that: The heat transfer pipeline is arranged in an oblique line and connected between the curing furnace and the feed box.

4. The device for recovering waste heat from a curing furnace according to claim 3, characterized in that: The discharging assembly includes a discharging box and a breathable plate. The conveyor belt passes through both ends of the discharging box and is located in the middle of the discharging box. The breathable plate is connected to the inner bottom end of the discharging box. The breathable plate is located at the bottom end of the conveyor belt. Through holes are provided on the breathable plate. The transport pipeline is connected to the bottom of the discharging box.

5. The device for recovering waste heat from a curing furnace according to claim 4, characterized in that: A plurality of the heat transfer pipes are connected in series to form a passage.

6. The device for recovering waste heat from a curing furnace according to claim 5, characterized in that: The water outlet end of the hot water transfer pipe is close to the filter net bag, and the water inlet end of the hot water transfer pipe is close to the transport pipeline.

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