Waste heat recovery system of fabric treatment equipment and fabric treatment equipment

Abstract

The utility model provides a waste heat recovery system of fabric treatment equipment and the fabric treatment equipment, the waste heat recovery system of the fabric treatment equipment is connected with a fabric treatment body, the waste heat recovery system of the fabric treatment equipment comprises an oil smoke treatment device, a waste gas pipeline and a fresh air pipeline; a heat exchange unit included in the oil fume treatment device performs first heat exchange on fresh air and waste gas to form first hot air after first heating, and supplies the first hot air to a fresh air pipeline; the fresh air pipeline partially sleeves the outer side of the waste gas pipeline so as to perform secondary heat exchange on the primary hot air and waste gas in the waste gas pipeline to form secondary hot air after secondary heating, and the secondary hot air is supplied to the fabric treatment body; the flowing direction of primary hot air in the fresh air pipeline is opposite to the flowing direction of waste gas in the waste gas pipeline. According to the waste heat recovery system of the fabric treatment equipment and the fabric treatment equipment, the utilization efficiency of heat energy in waste gas is improved.

Description

Technical Field

[0001] This utility model relates to the field of fabric processing equipment technology, and in particular to a waste heat recovery system and fabric processing equipment for fabric processing. Background Technology

[0002] Fabric processing equipment such as tenter frame machines use high-temperature hot air generated by a heat source to dry and set fabrics within a heated chamber. Upon contact with the fabric, the high-temperature hot air generates waste gas containing oil mist, particulate matter, and volatile organic compounds, requiring continuous emission to maintain a healthy production environment. Since this waste gas carries a significant amount of heat, direct emission would result in energy waste. However, current waste heat recovery systems do not adequately recover the heat from the waste gas, leading to low thermal efficiency.

[0003] It should be noted that the above description of the background technology is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background technology section of this application. Utility Model Content

[0004] The purpose of this utility model is to disclose a waste heat recovery system and a fabric processing device, which is used to solve many defects in the existing waste heat recovery system, especially to improve the efficiency of heat energy utilization in waste gas.

[0005] To achieve the above objectives, in a first aspect, this utility model provides a waste heat recovery system for a fabric processing equipment, which is connected to the fabric processing body. The waste heat recovery system for the fabric processing equipment includes: an oil fume treatment device, an exhaust gas duct for transmitting the exhaust gas generated by the fabric processing body to the oil fume treatment device, and a fresh air duct connecting the fabric processing body and the oil fume treatment device.

[0006] The oil fume treatment device includes a heat exchange unit that performs a first heat exchange between fresh air and exhaust gas to form primary hot air after the first heating, and supplies the primary hot air to the fresh air duct.

[0007] The fresh air duct is partially sleeved on the outside of the exhaust gas duct to allow for a second heat exchange between the primary hot air and the exhaust gas in the exhaust gas duct, thereby forming secondary hot air after a second heating, and supplying the secondary hot air to the fabric treatment body.

[0008] The flow direction of the primary hot air in the fresh air duct is opposite to the flow direction of the exhaust gas in the exhaust gas duct.

[0009] As a further improvement of this utility model, the fresh air duct includes: an inner pipe and an outer pipe with inner and outer sleeves, the inner pipe being attached to the outer surface of the exhaust gas duct, and a fresh air channel being formed between the inner pipe and the outer pipe. The fresh air channel is configured to connect the air inlet and air outlet of the heat exchange unit and the fabric treatment body, respectively.

[0010] As a further improvement of this utility model, the fresh air duct includes: a heat exchange pipe sleeved on the outside of the exhaust gas duct, the heat exchange pipe and the exhaust gas duct forming a fresh air channel, the fresh air channel being constructed to connect the air inlet and air outlet of the heat exchange unit and the fabric processing body respectively.

[0011] As a further improvement of this utility model, the fabric treatment body includes: a tenter frame, a steaming and drying integrated machine, a steaming machine, or a calendering machine.

[0012] As a further improvement of this utility model, the fabric treatment body is a tenter frame formed by splicing multiple setting heat boxes. Each setting heat box is equipped with an exhaust pipe connected to the exhaust gas pipe, and two adjacent setting heat boxes are spliced ​​along the width extension direction of their longitudinal sidewalls.

[0013] As a further improvement of this utility model, the exhaust gas duct includes: a first collecting pipe arranged along the splicing direction of the shaping heat box, and a second collecting pipe partially sleeved by the fresh air duct and connected to the first collecting pipe;

[0014] The exhaust pipe is connected to the first manifold, and a number of adapter pipes connecting to the second manifold are disposed in the middle or near the middle of the first manifold.

[0015] As a further improvement of this utility model, the second manifold is constructed with an upwardly bent anti-clogging section, and a connecting pipe connecting the anti-clogging section to the fume treatment device.

[0016] As a further improvement of this utility model, the fresh air duct further includes: a plurality of heat-conducting support blocks arranged at equal intervals along the circumference between the inner pipe and the outer pipe, the heat-conducting support blocks being arranged in a spiral shape along the extension direction of the exhaust gas duct.

[0017] As a further improvement of this utility model, the fresh air duct further includes: a plurality of heat-conducting support blocks arranged at equal intervals along the circumference between the heat exchange pipe and the exhaust gas duct, wherein the heat-conducting support blocks are arranged in a spiral shape along the extension direction of the exhaust gas duct.

[0018] Secondly, the present invention also provides a fabric processing device, comprising: a fabric processing body, and a waste heat recovery system of the fabric processing device as described in any one of the first aspects, wherein the waste heat recovery system of the fabric processing device is connected to the fabric processing body.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] The heat exchange unit included in the fume treatment device performs a first heat exchange between fresh air and high-temperature exhaust gas, transferring heat from the exhaust gas to the fresh air and supplying primary hot air to the fresh air duct. The fresh air duct is partially fitted outside the exhaust gas duct to allow for a second heat exchange between the high-temperature exhaust gas in the exhaust gas duct and the primary hot air in the fresh air duct. Since the exhaust gas in the exhaust gas duct is directly discharged from the fabric treatment body without any heat recovery treatment, the exhaust gas in the exhaust gas duct has a high heat content. The flow direction of the primary hot air in the fresh air duct is opposite to that of the exhaust gas in the exhaust gas duct, so that the heat in the exhaust gas is further recovered and reheated to form secondary hot air, which further increases the temperature of the secondary hot air, thereby improving the efficiency of heat energy utilization in the exhaust gas. Attached Figure Description

[0021] Figure 1 This is an overall schematic diagram of the waste heat recovery system of the fabric processing equipment disclosed in this utility model;

[0022] Figure 2 This is an overall schematic diagram of the waste heat recovery system of the fabric processing equipment in another embodiment;

[0023] Figure 3 A schematic diagram of a heat-conducting support block configured between the heat exchange tube and the exhaust gas pipe;

[0024] Figure 4 This is a schematic diagram of a heat-conducting support block positioned between the inner and outer tubes. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0026] The accompanying drawings in this application are not drawn to scale; the specific dimensions of each structure can be determined according to actual needs. The drawings described in this application are merely structural schematic diagrams. The lines shown in the accompanying drawings of this application can be understood as components with a certain actual thickness.

[0027] Please refer to Figures 1 to 4 A specific implementation of the waste heat recovery system 100 of a fabric processing device disclosed herein.

[0028] Refer to Figure 1 As Figure 2 shown, in this embodiment, the waste heat recovery system 100 of the fabric processing device is connected to the fabric processing body 10. The waste heat recovery system 100 of the fabric processing device includes: an oil fume treatment device 20, an exhaust gas pipeline 30 for transmitting the exhaust gas generated by the fabric processing body 10 to the oil fume treatment device 20, and a fresh air pipeline 40 connecting the fabric processing body 10 and the oil fume treatment device 20; a heat exchange unit 21 included in the oil fume treatment device 20 performs a first heat exchange between the fresh air and the exhaust gas to form primary hot air after the first heating, and supplies the primary hot air to the fresh air pipeline 40; a part of the fresh air pipeline 40 is sleeved outside the exhaust gas pipeline 30 to perform a second heat exchange between the primary hot air and the exhaust gas in the exhaust gas pipeline 30 to form secondary hot air after the second heating, and supplies the secondary hot air to the fabric processing body 10; wherein, the flow direction of the primary hot air in the fresh air pipeline 40 is opposite to the flow direction of the exhaust gas in the exhaust gas pipeline 30.

[0029] The waste heat recovery system 100 of the fabric processing device disclosed in this application is used by the fabric processing body 10 to dry and shape the fabric. The fabric processing body 10 generates high-temperature exhaust gas during operation. The high-temperature exhaust gas generated by the fabric processing body 10 is transmitted to the oil fume treatment device 20 through the exhaust gas pipeline 30 to treat the high-temperature exhaust gas generated by the fabric processing body 10 through the oil fume treatment device 20. After removing the oil mist and particulate matter in the exhaust gas, the exhaust gas is discharged to the outside along Figure 1 the direction shown by the arrow F4 in Figure 1 . At the same time, fresh air from the outside (hereinafter referred to as "fresh air") enters the oil fume treatment device 20 along the direction shown by the arrow X1 in Figure 1The direction indicated by the middle arrow X2) and the flow direction of the exhaust gas in the exhaust gas duct 30 (as shown by...) Figure 1 (In the opposite direction shown by the middle arrow F3) to further recover heat from the exhaust gas and reheat the primary hot air to form secondary hot air, further increasing its temperature and thus improving the efficiency of heat energy utilization from the exhaust gas. The secondary hot air is then transported through the fresh air duct 40 along... Figure 1 The fresh air is supplied to the fabric treatment body 10 in the direction indicated by the middle arrow X3. Since the fresh air undergoes two heat exchanges, the fabric treatment body 10 only needs to provide less heat energy to heat the fresh air to the target temperature, thereby reducing the energy consumption required for the fabric treatment body 10 to operate.

[0030] In some examples, the parameter Figure 1 As shown, the fresh air duct 40 includes an inner pipe 411 and an outer pipe 412, which are fitted together. The inner pipe 411 is attached to the outer surface of the exhaust gas duct 30, and a fresh air passage 410 is formed between the inner pipe 411 and the outer pipe 412. The fresh air passage 410 is constructed with an air inlet 420 and an air outlet 430 that respectively connect the heat exchange unit 21 and the fabric treatment body 10. The high-temperature exhaust gas in the exhaust gas duct 30 transfers heat to the primary hot air in the fresh air passage 410 through the contact surface between the inner pipe 411 and the exhaust gas duct 30, so that the primary hot air can fully absorb the residual heat in the exhaust gas to achieve heat exchange. The fresh air undergoes the first heat exchange with the exhaust gas in the heat exchange unit 21. The heated primary hot air enters the fresh air passage 410 through the air inlet 420. The primary hot air flows along the air in the fresh air passage 410. Figure 1 The gas flows in the direction indicated by the middle arrow X2, and is absorbed by the inner pipe 411 along the exhaust gas pipe 30. Figure 1 The high-temperature exhaust gas flowing in the direction indicated by the middle arrow F3 has a high heat value because the exhaust gas in the exhaust gas duct 30 is directly discharged from the fabric processing body 10 without any heat recovery treatment. This heat is used to perform a second heat exchange on the primary hot air, further increasing the temperature of the hot air. The heated secondary hot air then enters the fabric processing body 10 through the air outlet 430, thereby reducing the heating requirement of the fabric processing body 10 for fresh air and thus reducing the energy consumption required for the operation of the fabric processing body 10.

[0031] In some examples, the parameter Figure 2As shown, the fresh air duct 40 includes a heat exchange pipe 42 sleeved outside the exhaust gas duct 30, forming a fresh air passage 410 between the heat exchange pipe 42 and the exhaust gas duct 30. The fresh air passage 410 is constructed with an air inlet 420 and an air outlet 430 respectively connecting the heat exchange unit 21 and the fabric treatment body 10. The high-temperature exhaust gas in the exhaust gas duct 30 transfers heat to the primary hot air in the fresh air passage 410 through its pipe wall (not shown), allowing the primary hot air to fully absorb the residual heat in the exhaust gas to achieve heat exchange. The fresh air undergoes a first heat exchange with the exhaust gas in the heat exchange unit 21, and the heated primary hot air enters the fresh air passage 410 through the air inlet 420. The primary hot air moves along the air in the fresh air passage 410. Figure 2 The exhaust gas flows in the direction indicated by the middle arrow X2. Since the exhaust gas in the exhaust duct 30 is directly discharged from the fabric processing body 10 without any heat recovery treatment, the exhaust gas in the exhaust duct 30 has a high heat content. The exhaust duct 30 then directs the heat through its pipe wall along... Figure 2 The heat in the high-temperature exhaust gas flowing in the direction indicated by the middle arrow F3 exchanges heat with the primary hot air a second time to further increase the temperature of the hot air. The heated secondary hot air then enters the fabric treatment body 10 through the air outlet 430, thereby reducing the heating requirement of the fabric treatment body 10 for fresh air and thus reducing the energy consumption required for the operation of the fabric treatment body 10.

[0032] In some examples, the parameter Figure 1 and Figure 2 As shown, the fresh air duct 40 also includes an air inlet pipe 43 and an air outlet pipe 44, which are respectively connected to the air inlet section 420 and the air outlet section 430. The end of the air inlet pipe 43 away from the air inlet section 420 is connected to the heat exchange unit 21, and the end of the air outlet pipe 44 away from the air outlet section 430 is connected to the fabric processing body 10. The primary hot air, after being heated for the first time by the heat exchange unit 21, is transported from the heat exchange unit 21 to the air inlet section 420 of the fresh air duct 410 through the air inlet pipe 43, allowing the primary hot air to enter the fresh air duct 410 for secondary heating. The secondary hot air is transported from the air outlet section 430 of the fresh air duct 410 to the fabric processing body 10 through the air outlet pipe 44.

[0033] In some examples, the fabric treatment body 10 includes: a tenter frame, a steaming and drying machine, a steaming machine, or a calendering machine. The aforementioned fabric treatment body 10 refers to any fabric treatment equipment that treats textile articles by means of natural gas heating, steam heating, or heat transfer oil heating during operation.

[0034] In some examples, the parameter Figure 1 and Figure 2As shown, the fabric treatment body 10 is a tenter frame formed by splicing multiple setting heat boxes 11. Each setting heat box 11 is equipped with an exhaust pipe 12 connected to the exhaust gas pipeline 30. Adjacent setting heat boxes 11 are spliced ​​along the width extension direction of their longitudinal sidewalls. The setting heat boxes 11 dry and set the fabric using high-temperature hot air. During the setting process, the setting heat boxes 11 generate high-temperature exhaust gas containing oil mist, particulate matter, etc. The high-temperature exhaust gas generated by the setting heat boxes 11 is transported to the exhaust gas pipeline 30 through the exhaust pipe 12, and finally flows along... Figure 1 or Figure 2 The exhaust gas enters the fume treatment device 20 in the direction indicated by the middle arrow F3 for treatment, so as to ensure that the exhaust gas can be discharged in a timely and efficient manner, maintain a stable working environment inside the shaping heat box 11, and provide a heat source for subsequent heat exchange, so that the heat in the exhaust gas can be fully recovered.

[0035] In some examples, the parameter Figure 1 and Figure 2 As shown, the exhaust gas duct 30 includes: a first collecting pipe 31 arranged along the splicing direction of the shaping heat box 11, and a second collecting pipe 32 partially sleeved by the fresh air duct 40 and connected to the first collecting pipe 31; an exhaust pipe 12 is connected to the first collecting pipe 31, and several connecting pipes 33 connected to the second collecting pipe 32 are arranged in the middle or near the middle of the first collecting pipe 31. The first collecting pipe 31 is arranged along the splicing direction of the shaping heat box 11 and is used to collect the high-temperature exhaust gas discharged from each shaping heat box 11. The high-temperature exhaust gas discharged from each shaping heat box 11 is arranged along the splicing direction of the first collecting pipe 31. Figure 1 or Figure 2 The gas is transported in the direction indicated by arrows F1 and F2 to the transfer pipe 33, and then the high-temperature exhaust gas is concentrated and transported to the second collecting pipe 32 through the transfer pipe 33. Since the shaping heat box 11 is made of steel plate, which has good heat transfer performance, heat is transferred between adjacent shaping heat boxes 11. Due to heat accumulation, the temperature in the middle area of ​​multiple shaping heat boxes 11 is higher, and the exhaust gas generated is also more hot. The high-heat exhaust gas in the middle area is transported to the second collecting pipe 32 through the transfer pipe 33 to improve the secondary heating effect of the fresh air in the fresh air duct 40, so as to make full use of the heat energy of the exhaust gas and improve the waste heat recovery efficiency.

[0036] In some examples, the secondary hot air in the fresh air duct 410 can be preferentially delivered to the shaping heat box 11 adjacent to the fabric feeding device (not shown) through the air outlet duct 44, or preferentially delivered to the shaping heat box 11 that is close to the fabric feeding device and has a relatively low temperature, or simultaneously delivered to multiple shaping heat boxes 11 through multiple branch pipes (not shown).

[0037] In some examples, the parameter Figure 1 and Figure 2As shown, the second collecting pipe 32 is constructed with an upwardly bent anti-clogging section 321 and a connecting pipe 322 connecting the anti-clogging section 321 to the fume treatment device 20. The upward bend of the anti-clogging section 321 allows oil mist and condensate in the exhaust gas to flow back naturally, preventing accumulation in the exhaust gas pipe 30, reducing the risk of blockage, and ensuring that the exhaust gas can be smoothly transported to the fume treatment device 20. The second collecting pipe 32 transports the exhaust gas to the fume treatment device 20 through the anti-clogging section 321 and the connecting pipe 322. The fume treatment device 20 further treats the exhaust gas, ensuring that oil mist, particulate matter, etc., in the exhaust gas are effectively removed, reducing environmental pollution. To improve the anti-clogging effect of the anti-clogging section 321, it can be configured to extend upward in a vertical direction.

[0038] In some examples, the parameter Figure 1 and Figure 2 As shown, the fume treatment device 20 also includes a filter 22 for removing oil mist and particulate matter from the exhaust gas. In actual use, the connecting pipe 322 connected to the fume treatment device 20 can be considered as a pipe that can smoothly deliver exhaust gas into the fume treatment device 20, and has a certain length, which is not specifically shown in this embodiment. This sufficiently widens and increases the distance between the fume treatment device 20 and the fabric treatment body 10. Typically, the filter 22 is installed outdoors to avoid the safety hazard of potential fire caused by filter clogging during indoor operation, thereby improving the operational safety of the waste heat recovery system 100 of the fabric treatment equipment.

[0039] In some examples, the parameter Figure 4 As shown, the fresh air duct 40 also includes a plurality of thermally conductive support blocks 45 evenly spaced circumferentially between the inner pipe 411 and the outer pipe 412. The thermally conductive support blocks 45 are evenly spaced circumferentially to fix the relative position between the inner pipe 411 and the outer pipe 412, preventing deformation or displacement of the fresh air duct 40 due to thermal expansion or mechanical vibration, and improving the stability of the fresh air duct 40. The thermally conductive support blocks 45 are made of a high thermal conductivity material (e.g., aluminum alloy) to increase the heat exchange area and improve heat transfer efficiency, efficiently transferring the heat absorbed by the inner pipe 411 to the primary hot air in the fresh air duct 410, ensuring that the primary hot air can fully absorb the heat from the exhaust gas.

[0040] In some examples, the parameter Figure 3As shown, the fresh air duct 40 also includes a plurality of thermally conductive support blocks 45 evenly spaced circumferentially between the heat exchange pipe 42 and the exhaust gas duct 30. The thermally conductive support blocks 45 are evenly spaced circumferentially to fix the relative position between the heat exchange pipe 42 and the exhaust gas duct 30, preventing deformation or displacement of the fresh air duct 40 due to thermal expansion or mechanical vibration, and improving the stability of the fresh air duct 40. The thermally conductive support blocks 45 are made of a high thermal conductivity material (e.g., aluminum alloy) to increase the heat exchange area and improve heat transfer efficiency, efficiently transferring the heat from the exhaust gas duct 30 to the primary hot air in the fresh air duct 410, ensuring that the primary hot air can fully absorb the heat from the exhaust gas.

[0041] In some examples, the parameter Figure 3 and Figure 4 As shown, the heat-conducting support blocks 45 are arranged in a spiral shape along the extension direction of the exhaust gas duct 30. The spiral arrangement of the heat-conducting support blocks 45 increases the heat exchange area with the primary hot air, improves heat transfer efficiency, and ensures that the primary hot air can fully absorb the heat from the exhaust gas. In various embodiments of this application, by extending the contact time between the primary hot air and the exhaust gas duct 30 or inner pipe 411 during the flow of the primary hot air within the fresh air duct 40, it is beneficial to further recover the waste heat from the exhaust gas and improve the thermal energy utilization rate.

[0042] Based on the same inventive concept, this embodiment also discloses a fabric treatment device (not shown), which includes: a fabric treatment body 10, and a waste heat recovery system 100 of the fabric treatment device as disclosed in the above embodiments, wherein the waste heat recovery system 100 is connected to the fabric treatment body 10. The fabric treatment body 10 can be any one of a tenter frame, a steaming and drying integrated machine, a steaming machine, or a calendering machine. The specific technical solution of the waste heat recovery system 100 of the fabric treatment device included in this embodiment is the same as that in the foregoing embodiments, and will not be repeated here.

[0043] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A waste heat recovery system for a fabric processing device, connected to the fabric processing body, Its features are, The waste heat recovery system of the fabric processing equipment includes: An oil fume treatment device is used to transmit the exhaust gas generated by the fabric treatment body to the exhaust gas duct of the oil fume treatment device, and to connect the fabric treatment body and the oil fume treatment device with a fresh air duct. The oil fume treatment device includes a heat exchange unit that performs a first heat exchange between fresh air and exhaust gas to form primary hot air after the first heating, and supplies the primary hot air to the fresh air duct. The fresh air duct is partially sleeved on the outside of the exhaust gas duct to allow for a second heat exchange between the primary hot air and the exhaust gas in the exhaust gas duct, thereby forming secondary hot air after a second heating, and supplying the secondary hot air to the fabric treatment body. The flow direction of the primary hot air in the fresh air duct is opposite to the flow direction of the exhaust gas in the exhaust gas duct.

2. The waste heat recovery system of a fabric treatment apparatus according to claim 1, characterized in that, The fresh air duct includes an inner pipe and an outer pipe, the inner pipe is attached to the outer surface of the exhaust gas duct, and a fresh air channel is formed between the inner pipe and the outer pipe. The fresh air channel is configured to connect the air inlet and air outlet of the heat exchange unit and the fabric treatment body, respectively.

3. The waste heat recovery system of a fabric treatment apparatus according to claim 1, characterized in that, The fresh air duct includes a heat exchange pipe sleeved on the outside of the exhaust gas duct, and a fresh air channel is formed between the heat exchange pipe and the exhaust gas duct. The fresh air channel is configured to have an air inlet and an air outlet that respectively connect the heat exchange unit and the fabric treatment body.

4. The waste heat recovery system of a fabric treatment apparatus according to claim 1, characterized in that, The fabric processing body includes: a tenter frame, a steaming and drying integrated machine, a steaming machine, or a calender.

5. The waste heat recovery system of a fabric treatment apparatus according to claim 4, characterized in that, The fabric processing body is a tenter frame formed by splicing multiple setting heat boxes. Each setting heat box is equipped with an exhaust pipe connected to the exhaust gas pipe. Adjacent setting heat boxes are spliced ​​along the width extension direction of their longitudinal sidewalls.

6. The waste heat recovery system of a fabric treatment apparatus according to claim 5, wherein The exhaust gas duct includes: a first collecting pipe arranged along the splicing direction of the shaping heat box, and a second collecting pipe partially sleeved by the fresh air duct and connected to the first collecting pipe; The exhaust pipe is connected to the first manifold, and a number of adapter pipes connecting to the second manifold are disposed in the middle or near the middle of the first manifold.

7. The waste heat recovery system of a fabric treatment apparatus according to claim 6, characterized in that, The second manifold is configured with an upwardly bent anti-clogging section and a connecting pipe that connects the anti-clogging section to the fume treatment device.

8. The waste heat recovery system of a fabric treatment apparatus according to claim 2, wherein The fresh air duct also includes a plurality of heat-conducting support blocks that are equally spaced along the circumference between the inner pipe and the outer pipe, and the heat-conducting support blocks are arranged in a spiral shape along the extension direction of the exhaust gas duct.

9. The waste heat recovery system of a fabric treatment apparatus according to claim 3, characterized in that, The fresh air duct also includes a plurality of heat-conducting support blocks that are equally spaced along the circumference between the heat exchange pipe and the exhaust gas duct, the heat-conducting support blocks being arranged in a spiral shape along the extension direction of the exhaust gas duct.

10. A fabric treatment apparatus characterised in that, include: The fabric processing body, and the waste heat recovery system of the fabric processing equipment as described in any one of claims 1 to 9, wherein the waste heat recovery system of the fabric processing equipment is connected to the fabric processing body.

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