Waste gas waste heat recovery device of setting machine

Abstract

The utility model relates to the technical field of production and manufacturing of setting machines, in particular to a waste gas waste heat recovery device of a setting machine, which comprises a casing of a rectangular box structure, the casing is hollow, a waste gas inlet is arranged at one end outside the casing, a waste gas outlet is arranged at the other end outside the casing, and a cold air inlet is arranged at the bottom of the casing close to the waste gas outlet. A waste gas inlet is formed in the shell, a hot air recycling opening is formed in the top, close to the waste gas inlet, of the shell, a plurality of layers of corrugated plates formed by stacking are arranged in the shell, the longitudinal section of each corrugated plate is in a wave shape, a recycling channel is formed between every two adjacent corrugated plates, and the recycling channels are separated through waste gas channels formed by the adjacent corrugated plates. And the corrugated plates forming the recovery channel and the waste gas channel can horizontally and relatively move, so that the problems that a plate heat exchanger in a device in the prior art is small in heat exchange area and low in heat exchange efficiency, airflow only exchanges heat on the surface of the plate, and the interior does not participate in heat exchange are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of production and manufacturing of shaping machines, in particular to a waste gas waste heat recovery device for shaping machines. Background Art

[0002] The textile printing and dyeing industry is a wide-ranging industrial sector that is primarily concerned with the manufacture, processing and finishing of fibers, yarns and fabrics to achieve specific appearance, performance and functional requirements. Printing and dyeing is the process of adding dyes or pigments to textiles to achieve the desired color, pattern and texture.

[0003] In the textile printing and dyeing process, the setting machine is a key equipment used to heat treat and set the fabric. Setting is to fix the dyes and prints in the fiber or fabric by heating and pressurizing it to improve the color fastness, twist and gloss of the fabric. The appearance, surface characteristics and dyeing quality of the product can be improved through setting treatment.

[0004] During the working process of the setting machine, the fabric is heated and pressurized by high-temperature steam treatment or hot flat pressing, so that the dye molecules and fabric fiber molecules are more closely combined, achieving printing fixation and dyeing setting. Setting machines are generally divided into two types: hot roller and hot air, and their working principles are slightly different. The hot roller setting machine presses the fabric between the hot rollers to heat it through the rotation of the hot rollers, while the hot air setting machine heats the fabric to a certain temperature and then enters the high-temperature uniform airflow heating zone. In short, the setting machine plays a vital role in the textile printing and dyeing industry. By using the setting machine for heat treatment and setting, the performance and appearance quality of textiles can be effectively improved and enhanced.

[0005] The setting machine is one of the equipment with the highest energy consumption in the textile printing and dyeing industry. The average medium-pressure steam consumption of a single setting machine exceeds 1 ton / hour, and the natural gas consumption exceeds 70m 3 / hour, and the energy consumption of a single machine in 24 hours exceeds 6,000-10,000 yuan. As energy prices continue to rise, the country's requirements for energy consumption and carbon emissions continue to increase, and enterprises are increasingly urgent to transform and upgrade energy conservation and emission reduction. Therefore, an efficient waste heat recovery device for the exhaust gas of the setting machine has become the main demand today.

[0006] The traditional waste heat recovery device of the waste gas of the setting machine generally uses finned tubes as the heat exchange element. However, due to the particularity of the flue gas of the printing and dyeing setting machine, the flue gas of the setting machine contains a lot of grease, fiber dust, particulate matter and corrosive chemical principles. The finned tubes are easy to scale and clog in the flue gas, are easy to be corroded, and are not resistant to high temperatures. They need to be manually cleaned every day, and are easy to fall over during cleaning. The heat exchange efficiency decays over time. The ordinary plate heat exchanger cannot be used in the waste heat recovery of the setting machine due to its low heat exchange efficiency. Utility Model Content

[0007] The utility model provides a waste heat recovery device for exhaust gas of a shaping machine, which solves the problems in the prior art that the plate heat exchanger has a small heat exchange area, low heat exchange efficiency, the airflow only exchanges heat on the plate surface, the interior does not participate in heat exchange, the heat exchange performance is fixed, the variable adjustment range is small, and it is not suitable for most complex use environments.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A waste heat recovery device for waste gas of a stenting machine comprises a shell which is a rectangular box structure. The interior of the shell is hollow, an exhaust gas inlet is provided at one end of the exterior of the shell, and an exhaust gas outlet is provided at the other end. A cold air inlet is provided at the bottom of the shell near the exhaust gas outlet, and a hot air recycling port is provided at the top of the shell near the exhaust gas inlet. Several layers of stacked corrugated plates are provided inside the shell, and the longitudinal section of the corrugated plates is wavy. Recovery channels are formed between adjacent corrugated plates, and the recovery channels are separated by exhaust gas channels formed by adjacent corrugated plates, and the corrugated plates forming the recovery channel and the exhaust gas channel can move horizontally relative to each other.

[0010] Preferably, one recovery channel and one exhaust gas channel form a recovery unit, and the recovery unit is formed by three corrugated plates stacked in parallel, and the middle corrugated plate among the three corrugated plates in the recovery unit is fixed to the shell, and the corrugated plates on both sides can slide relative to each other along the extension direction of the corrugated plates.

[0011] Preferably, a plurality of recovery units stacked in parallel are provided in the shell, and in the recovery unit, the channel cross-sectional area of ​​the exhaust gas channel is larger than the channel cross-sectional area of ​​the recovery channel, and the channel cross-sectional area of ​​the exhaust gas channel is 1.5 to 3 times the channel cross-sectional area of ​​the recovery channel.

[0012] Preferably, a plurality of guide rings smaller than the cross-sectional area of ​​the exhaust gas channel are provided in the exhaust gas channel. The guide rings are arranged in the entire exhaust gas channel, and the intervals between adjacent guide rings are equal. The cross-sectional area of ​​the guide rings is 0.1 to 0.4 times the cross-sectional area of ​​the exhaust gas channel.

[0013] Preferably, one end of several recovery channels in the shell near the cold air inlet is interconnected and sealed with the cold air inlet, and one end of the recovery channels near the hot air recycling port is interconnected and sealed with the hot air recycling port.

[0014] Preferably, several exhaust channels in the shell are parallel to the line between the exhaust inlet and the exhaust outlet, one end of several exhaust channels close to the exhaust inlet is interconnected and sealed with the exhaust inlet, and the other ends of several exhaust channels are interconnected and sealed with the exhaust outlet.

[0015] Preferably, in the recovery unit, the two outer corrugated plates can be moved along the exhaust gas outlet direction so that the corrugations of the two outer corrugated plates are parallel to the corrugations of the middle corrugated plate. At the same time, the two outer corrugated plates can be moved along the exhaust gas inlet direction so that the corresponding positions of the peak sections of the two corrugated plates of the recovery channel are the same, and the corresponding positions of the peak sections and trough sections of the two corrugated plates of the exhaust gas channel are the same.

[0016] Preferably, the inner walls of the recovery channel and the exhaust gas channel are covered with heat-conductive and temperature-resistant coatings.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model adopts high thermal conductivity corrugated plates made of special materials as heat exchange plates, and selects different corrugated plate intersection forms according to the types of flue gas of different setting machines and different Reynolds numbers, so that the flue gas flowing through is subjected to different extrusions inside, forming vortices, and the flue gas exchanges heat inside and outside, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic front view of a shell structure of an embodiment of the utility model.

[0020] Figure 2 This is a schematic diagram of the gas flow path of a recovery channel in a normal state of an embodiment of the utility model.

[0021] Figure 3 This is a schematic diagram of the gas flow path of an exhaust gas channel in a high efficiency state according to an embodiment of the utility model.

[0022] Figure 4 The figure is a schematic diagram of the gas flow path of an exhaust gas channel in a transition state according to an embodiment of the present utility model.

[0023] Figure 5 This is a schematic diagram of the gas flow path of an exhaust gas channel in a normal state according to an embodiment of the utility model.

[0024] Figure 6 This is a schematic cross-sectional view of the corrugated plate structure of a recovery unit in a normal state according to an embodiment of the utility model.

[0025] Figure 7 This is a schematic cross-sectional view of the corrugated plate structure of a recovery unit in a high efficiency state according to an embodiment of the utility model.

[0026] In the figure: waste gas inlet 1, waste gas outlet 2, hot air recycling port 3, cold air inlet 4, shell 5, corrugated plate 6, gas channel 6.1, trough section 6.2, peak section 6.3, recovery channel 7, waste gas channel 8. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The textile printing and dyeing industry is a wide-ranging industrial sector that is primarily concerned with the manufacture, processing and finishing of fibers, yarns and fabrics to achieve specific appearance, performance and functional requirements. Printing and dyeing is the process of adding dyes or pigments to textiles to achieve the desired color, pattern and texture.

[0029] In the textile printing and dyeing process, the setting machine is a key equipment used to heat treat and set the fabric. Setting is to fix the dyes and prints in the fiber or fabric by heating and pressurizing it to improve the color fastness, twist and gloss of the fabric. The appearance, surface characteristics and dyeing quality of the product can be improved through setting treatment.

[0030] During the working process of the setting machine, the fabric is heated and pressurized by high-temperature steam treatment or hot flat pressing, so that the dye molecules and fabric fiber molecules are more closely combined, achieving printing fixation and dyeing setting. Setting machines are generally divided into two types: hot roller and hot air, and their working principles are slightly different. The hot roller setting machine presses the fabric between the hot rollers to heat it through the rotation of the hot rollers, while the hot air setting machine heats the fabric to a certain temperature and then enters the high-temperature uniform airflow heating zone. In short, the setting machine plays a vital role in the textile printing and dyeing industry. By using the setting machine for heat treatment and setting, the performance and appearance quality of textiles can be effectively improved and enhanced.

[0031] The setting machine is one of the equipment with the highest energy consumption in the textile printing and dyeing industry. The average medium-pressure steam consumption of a single setting machine exceeds 1 ton / hour, and the natural gas consumption exceeds 70m 3 / hour, and the energy consumption of a single machine in 24 hours exceeds 6,000-10,000 yuan. As energy prices continue to rise, the country's requirements for energy consumption and carbon emissions continue to increase, and enterprises are increasingly urgent to transform and upgrade energy conservation and emission reduction. Therefore, an efficient waste heat recovery device for the exhaust gas of the setting machine has become the main demand today.

[0032] The traditional waste heat recovery device of the waste gas of the setting machine generally uses fin tubes as the heat exchange element. However, due to the particularity of the flue gas of the printing and dyeing setting machine, the flue gas of the setting machine contains a large amount of grease, fiber dust, particulate matter and corrosive chemical principles. The fin tubes are easy to scale and clog in the flue gas, are easy to be corroded, and are not resistant to high temperatures. They need to be manually cleaned every day. They are easy to fall over during cleaning, and the heat exchange efficiency decays over time. The ordinary plate heat exchanger cannot be used in the waste heat recovery of the setting machine due to its low heat exchange efficiency. In order to solve the above problems, this embodiment 1 is provided. This embodiment 1 includes a waste gas inlet 1, a waste gas outlet 2, a hot air recovery port 3, a cold air inlet 4, a shell 5, a corrugated plate 6, a gas channel 6.1, a trough section 6.2, a peak section 6.3, a recovery channel 7, and a waste gas channel 8.

[0033] Reference Figure 1 , Figure 6 , Figure 7 For this embodiment 1, refer to Figure 1 Schematic diagram of the main view of the shell structure, this embodiment 1 is a waste heat recovery device for a setting machine, including a shell 5, which is a rectangular box structure, the shell is hollow inside, an exhaust gas inlet 1 is provided at one end of the shell 5, and an exhaust gas outlet 2 is provided at the other end, the exhaust gas inlet 1 and the exhaust gas outlet 2 are located on the same plane, a cold air inlet 4 is provided at the bottom of the shell near the exhaust gas outlet, a hot air recycling port 3 is provided at the top of the shell 5 near the exhaust gas inlet 1, and a plurality of layers of corrugated plates 6 are provided inside the shell 5, and the corrugated plates 6 are The longitudinal section is wavy, and recovery channels 7 are formed between adjacent corrugated plates 6. An exhaust gas channel 8 is also provided between adjacent recovery channels. The exhaust gas channel 8 is also composed of adjacent corrugated plates 6, and the cross-sectional area of ​​the exhaust gas channel 8 is larger than that of the recovery channel 7, so that more exhaust gas enters the exhaust gas pipe at the same time, increasing the heat conduction efficiency. The recovery channel has a smaller cross-sectional area, so the cold air inside it is more contracted, which makes it convenient for the pipe wall of the exhaust gas channel to heat the cold air in the recovery channel. In addition, the corrugated plates constituting the recovery channel and the exhaust gas channel can move horizontally relative to each other.

[0034] A recovery channel 7 and an exhaust gas channel 8 form a recovery unit, and the recovery unit is formed by stacking three corrugated plates in parallel, and the corrugated plate 6 in the middle of the three corrugated plates of the recovery unit is fixed to the shell 5, and the corrugated plates 6 on both sides can slide relatively along the extension direction of the corrugated plates. The entire recovery unit is provided with a monitoring device to monitor the temperature, pressure, flow and other parameters in the channel in real time to ensure that the system operates in a safe and stable state. The monitoring device will be connected to the sensors in the recovery channel 7 and the exhaust gas channel 8, and transmit the real-time collected data to the central processing unit for processing. The central processing unit will analyze the data, judge the system operation status, and issue an alarm in time when an abnormality is found to remind the operator to take corresponding measures.

[0035] In order to ensure smooth gas flow in the recovery channel and exhaust gas channel, the system is also equipped with a gas flow regulating device. The device automatically adjusts the gas flow rate in the channel according to the changes in gas flow and pressure difference to prevent the gas from drastically fluctuating in the channel, thereby reducing energy consumption and improving recovery efficiency.

[0036] A sealing device is provided at the connection between the recovery channel and the exhaust gas channel to ensure the airtightness of the gas in the channel. The sealing device is made of high-strength metal material with good tensile strength and compressive strength, and can effectively prevent gas leakage when the channel is subjected to high pressure difference.

[0037] In summary, the recovery system has the advantages of high efficiency, safety, and environmental protection, and can provide reliable waste gas recovery solutions for factories and enterprises under various working conditions.

[0038] In addition, the recycling system is also equipped with a cleaning device to regularly clean the recycling channel and the exhaust channel to prevent the accumulation in the channel from affecting the gas flow. The cleaning device uses high-pressure water flow to flush the accumulation on the inner surface of the channel in a short time. During the cleaning process, the system will automatically close the exhaust channel to ensure that the cleaning wastewater will not pollute the environment.

[0039] The inner walls of the recovery channel 7 and the exhaust channel 8 are both covered with heat-conducting and temperature-resistant coatings, which can maintain good stability in a high-temperature environment and effectively prevent the inner wall from being corroded and worn. The coating material is a high-performance ceramic material with high hardness, high wear resistance and high thermal conductivity, ensuring that the channel always maintains good performance during long-term operation.

[0040] Reference Figure 6 This is a cross-sectional diagram of the corrugated plate structure of the recovery unit in normal state, refer to Figure 7 The schematic diagram of the cross-section of the corrugated plate structure when the recovery unit is in a high-efficiency state, in which a plurality of parallel stacked recovery units are arranged in the shell, and in the recovery unit, the channel cross-sectional area of ​​the exhaust gas channel is larger than the channel cross-sectional area of ​​the recovery channel, and the channel cross-sectional area of ​​the exhaust gas channel is 1.5 to 3 times the channel cross-sectional area of ​​the recovery channel. The parallel stacked recovery units in the shell 5 can greatly improve the treatment efficiency of the exhaust gas. Since the channel cross-sectional area of ​​the exhaust gas channel 8 is larger than the recovery channel 7, the exhaust gas can be better captured and processed by the recovery unit when passing through the channel. At the same time, the channel cross-sectional area of ​​the exhaust gas channel 8 is 1.5 to 3 times that of the recovery channel 7. Such a proportional design enables the exhaust gas to generate a suitable flow rate when flowing in the channel, thereby improving the recovery efficiency.

[0041] Secondly, this design is conducive to improving the service life of the entire shell. Since the exhaust gas has a moderate flow rate in the channel, it can reduce the degree of wear on the channel wall and extend the service life of the channel. At the same time, the parallel stacking design of the recovery unit makes the airflow distribution in the channel more uniform, further reducing the wear on the channel wall.

[0042] In addition, this design is also conducive to reducing the operating cost of the equipment. Due to the reasonable design of the channel cross-sectional area, the exhaust gas can flow smoothly in the channel, avoiding the increase in energy consumption caused by the channel cross-sectional area being too large or too small. At the same time, the parallel stacking design of the recovery unit enables the equipment to achieve efficient recovery and treatment of exhaust gas during operation, reducing operating costs.

[0043] Finally, this design also helps improve the reliability of the equipment. The reasonable ratio design of the channel cross-sectional area and the recovery channel enables the equipment to maintain stable working performance during long-term operation. The parallel stacking recovery unit design greatly reduces the risk of equipment failure and improves the reliability of the equipment.

[0044] In short, this shell design has significant advantages in improving exhaust gas treatment efficiency, extending equipment service life, reducing operating costs and improving equipment reliability.

[0045] In the exhaust gas channel, there are also several guide rings smaller than the cross-sectional area of ​​the exhaust gas channel. The guide rings are arranged in the entire exhaust gas channel 7, and the intervals between adjacent guide rings are equal. The cross-sectional area of ​​the guide rings is 0.1 to 0.4 times the cross-sectional area of ​​the exhaust gas channel. The diameter of the circular tube is adjusted according to the different Reynolds numbers of the flue gas, and guide rings of different sizes are selected, so that the flue gas forms a vortex of the Karman vortex street when passing through the guide rings, further increasing the heat exchange efficiency.

[0046] In the shell 5, one end of a plurality of recovery channels 7 close to the cold air inlet 4 is interconnected and sealed with the cold air inlet, and one end of the recovery channels 7 close to the hot air recycling port 3 is interconnected and sealed with the hot air recycling port.

[0047] Several exhaust gas channels 8 in the shell 5 are parallel to the connecting line between the exhaust gas inlet 1 and the exhaust gas outlet 2, and one end of several exhaust gas channels close to the exhaust gas inlet is interconnected and sealed with the exhaust gas inlet, and the other ends of several exhaust gas channels are interconnected and sealed with the exhaust gas outlet.

[0048] In the recovery unit, the two outer corrugated plates can be moved along the direction of the exhaust gas outlet 2 so that the corrugations of the two outer corrugated plates are parallel to the corrugations of the middle corrugated plate. At the same time, the two outer corrugated plates 6 can be moved along the direction of the exhaust gas inlet 1 so that the corresponding positions of the peak sections of the two corrugated plates of the recovery channel are the same, and the corresponding positions of the peak sections and trough sections of the two corrugated plates of the exhaust gas channel are the same.

[0049] In this recovery unit, the design cleverly utilizes the movement of the corrugated plates to achieve effective waste gas recovery. The two outer corrugated plates can move not only in the direction of the waste gas outlet, but also in the direction of the waste gas inlet. This flexible movement design enables the corrugated plates of the recovery channel and the waste gas channel to be precisely aligned, greatly improving the recovery efficiency.

[0050] When the corrugations of the two outer corrugated plates are parallel to the corrugations of the middle corrugated plate, the exhaust gas will encounter uniform resistance when passing through the channel, which helps the exhaust gas flow smoothly. At the same time, the corresponding positions of the peak sections of the two corrugated plates in the recovery channel are the same, and the corresponding positions of the peak sections and trough sections of the two corrugated plates in the exhaust channel are the same. This design can effectively reduce the pressure loss of the exhaust gas when passing through the channel and improve the recovery effect.

[0051] In actual application, the operation of the recovery unit is also very simple. Efficient recovery can be achieved by simply adjusting the position of the corrugated plate according to the nature and needs of the exhaust gas. Moreover, this design makes the recovery unit have good maintainability and durability, reducing the maintenance cost of the equipment and increasing its service life.

[0052] In short, this recovery unit makes full use of the moving characteristics of the corrugated plate to achieve effective recovery of waste gas, and has the advantages of high efficiency, environmental protection, and energy saving.

[0053] exist Figure 1 and Figure 6 , Figure 7 On the basis of the above, the technical schemes such as shape, structure, position relationship, connection relationship are further refined to obtain Example 2. This Example 2 is the same as Example 1, both of which are a waste heat recovery device for exhaust gas of a stenting machine, including a shell, which is a rectangular box structure. The interior of the shell is hollow, and an exhaust gas inlet is provided at one end of the outside of the shell, and an exhaust gas outlet is provided at the other end. The straight line connecting the exhaust gas inlet and the exhaust gas outlet is parallel to the box, a cold air inlet is provided at the bottom of the shell near the exhaust gas outlet, and a hot air recycling port is provided at the top of the shell near the exhaust gas inlet. The straight line connecting the cold air inlet and the hot air recycling port is the diagonal line of the side of the shell, and several layers of corrugated plates formed by stacking are provided inside the shell, and the longitudinal section of the corrugated plates is wavy. Recovery channels are formed between adjacent corrugated plates, and the recovery channels are separated by exhaust gas channels composed of adjacent corrugated plates, and the corrugated plates constituting the recovery channel and the exhaust gas channel can move horizontally relative to each other.

[0054] Reference Figures 2 to 5 This is the third embodiment. This is a different working state structure of the recovery unit of the device of the first embodiment. Figure 2 FIG. 1 is a schematic diagram of the gas flow path of the recovery channel of Example 3 in a normal state. In the figure, adjacent corrugated plates are placed in parallel with the corrugations, which is a conventional usage state. Figure 3The schematic diagram of the gas flow path of the exhaust gas channel in the high-efficiency state of the present embodiment 3 is shown. In the figure, adjacent corrugated plates are arranged and placed in a manner that the peaks and troughs correspond to each other. In this manner, the cross-section of the exhaust gas channel is gourd-shaped. When the exhaust gas enters, the exhaust gas enters the expanded opening after shrinking through the narrow opening, so that the exhaust gas moves closely to the tube wall, thereby increasing the thermal conductivity. However, this working state diagram requires the exhaust gas to have a high initial velocity, which is suitable for high-pressure and low-density flue gas types. The schematic diagram of the gas flow path of the exhaust gas channel in the transition state of the present embodiment 3 is shown. The transition state in the figure is a transition state in which the exhaust gas channel changes from a high-efficiency state to a normal state. When the flue gas enters, the flue gas moves both closely to the tube wall and in a straight line, so it is suitable for most flue gas types. Figure 5 This is a schematic diagram of the gas flow path of the exhaust gas channel in the normal state of this embodiment 3. In the figure, the adjacent corrugated plates of the exhaust gas channel are arranged in a parallel corrugation manner, which is a traditional normal working state with good stability and moderate efficiency.

[0055] The beneficial effects of the first and second embodiments are as follows:

[0056] This embodiment uses high thermal conductivity corrugated plates made of special materials as heat exchange plates. Different corrugated plate intersections are selected according to the types of flue gas in different setting machines and different Reynolds numbers, so that the flue gas flowing through is subjected to different extrusions inside, forming vortices, and the flue gas exchanges heat inside and outside, thereby improving the heat exchange efficiency.

[0057] The high thermal conductivity corrugated plate heat exchanger of this embodiment is innovative in structural design. First, various corrugated shapes and intersection forms are designed according to the characteristics of flue gas of different setting machines, such as the type, temperature, humidity and other parameters of flue gas, as well as the size of Reynolds number. These corrugations and intersection forms can cause flue gas to be squeezed to different degrees inside the heat exchange plate, forming vortices, thereby increasing the contact area between flue gas and heat exchange plate and improving heat exchange efficiency.

[0058] Secondly, the corrugated plate in this embodiment is made of a special material with good high thermal conductivity, corrosion resistance and wear resistance. This material can ensure that the heat exchanger always maintains stable heat exchange performance during long-term operation and prolong the service life of the heat exchanger.

[0059] In addition, this embodiment also takes into account the flow characteristics of the flue gas, and optimizes the structure of the heat exchange plate so that the flue gas can form a stable flow when passing through the heat exchanger, avoiding air flow turbulence and reducing the heat exchange effect. At the same time, this structure can also effectively reduce the flow resistance of the flue gas and reduce energy consumption.

[0060] The high thermal conductivity corrugated plate heat exchanger of this embodiment has achieved significant energy-saving effects in practical applications. Through the refined treatment of flue gas from different setting machines, the maximum utilization of flue gas heat is achieved, and the production cost is reduced. At the same time, the heat exchanger of this embodiment has a simple structure, is easy to install and maintain, and has high practical value.

[0061] In summary, this embodiment provides a high thermal conductivity corrugated plate heat exchanger with a reasonable structure and excellent performance, and provides a high-efficiency and energy-saving flue gas treatment solution for my country's sizing machine industry.

[0062] The above are only preferred embodiments of the present invention and do not constitute any limitation to the present invention. Any simple modification, change and equivalent transformation made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A waste heat recovery device for waste gas from a setting machine, characterized in that: It includes: a shell body, which is a rectangular box structure. The interior of the shell body is hollow. One end of the shell body is provided with an exhaust gas inlet, and the other end is provided with an exhaust gas outlet. The bottom of the shell body near the exhaust gas outlet is provided with a cold air inlet, and the top of the shell body near the exhaust gas inlet is provided with a hot air recycling port. The shell body is provided with a plurality of layers of stacked corrugated plates. The longitudinal section of the corrugated plates is wavy. Recovery channels are formed between adjacent corrugated plates. The recovery channels are separated by exhaust gas channels formed by adjacent corrugated plates, and the corrugated plates forming the recovery channel and the exhaust gas channel can move horizontally relative to each other.

2. The waste heat recovery device for waste gas from a setting machine according to claim 1, characterized in that: A recovery channel and an exhaust gas channel form a recovery unit, and the recovery unit is formed by three corrugated plates stacked in parallel. Among the three corrugated plates in the recovery unit, the middle corrugated plate is fixed to the shell, and the corrugated plates on both sides can slide relative to each other along the extension direction of the corrugated plates.

3. The waste heat recovery device for waste gas from a setting machine according to claim 2, characterized in that: A plurality of recovery units stacked in parallel are arranged in the shell, and in the recovery unit, the channel cross-sectional area of ​​the exhaust gas channel is larger than the channel cross-sectional area of ​​the recovery channel, and the channel cross-sectional area of ​​the exhaust gas channel is 1.5 to 3 times the channel cross-sectional area of ​​the recovery channel.

4. A waste heat recovery device for waste gas from a setting machine according to claim 1 or 3, characterized in that: In the exhaust gas channel, there are also several guide rings smaller than the cross-sectional area of ​​the exhaust gas channel. The guide rings are arranged in the entire exhaust gas channel, and the intervals between adjacent guide rings are equal. The cross-sectional area of ​​the guide rings is 0.1 to 0.4 times the cross-sectional area of ​​the exhaust gas channel.

5. The waste heat recovery device for waste gas from a setting machine according to claim 1, characterized in that: One end of a plurality of recovery channels in the shell near the cold air inlet is interconnected and sealed with the cold air inlet, and one end of the recovery channels near the hot air recycling port is interconnected and sealed with the hot air recycling port.

6. The waste heat recovery device for waste gas from a setting machine according to claim 1, characterized in that: Several exhaust channels in the shell are parallel to the line between the exhaust inlet and the exhaust outlet, one end of several exhaust channels close to the exhaust inlet is interconnected and sealed with the exhaust inlet, and the other ends of several exhaust channels are interconnected and sealed with the exhaust outlet.

7. The waste heat recovery device for waste gas from a setting machine according to claim 2 or 3, characterized in that: In the recovery unit, the two outer corrugated plates can be moved along the exhaust gas outlet direction so that the corrugations of the two outer corrugated plates are parallel to the corrugations of the middle corrugated plate. At the same time, the two outer corrugated plates can be moved along the exhaust gas inlet direction so that the corresponding positions of the peak sections of the two corrugated plates in the recovery channel are the same, and the corresponding positions of the peak sections and trough sections of the two corrugated plates in the exhaust gas channel are the same.

8. The waste heat recovery device for waste gas from a setting machine according to claim 1 or 2, characterized in that: The inner walls of the recovery channel and the exhaust gas channel are both covered with heat-conductive and temperature-resistant coatings.

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