A flue gas waste heat recovery system for textile fabric setting machines

Abstract

The present invention relates to the field of textile waste heat recovery, and in particular to a waste heat recovery system for flue gas from a textile fabric setting machine. The system comprises a plurality of waste heat recovery units, which are arranged longitudinally and connected head to tail. Flue gas enters from the tail end of one waste heat recovery unit, passes through a plurality of waste heat recovery units, and is discharged from the head end of another waste heat recovery unit. The waste heat recovery unit comprises a waste heat discharge pipe, a transverse rotating pipe fitting, and a waste heat recovery pipe fitting. The transverse rotating pipe fitting passes through the waste heat discharge pipe transversely, and the diameter of the transverse rotating pipe fitting is smaller than the inner diameter of the waste heat discharge pipe. The waste heat recovery pipe fitting is installed at both ends of the transverse rotating pipe fitting. A water pipe assembly is provided on the waste heat recovery pipe fitting, and the water pipe assembly is located inside the transverse rotating pipe fitting. The system can be set as an assembly structure, and the exhaust ports of multiple setting machines are respectively connected to the multiple waste heat discharge pipes, which effectively saves occupied space and improves the efficiency of waste heat utilization.

Description

Technical Field

[0001] The present invention relates to the field of textile waste heat recovery, and in particular to a fume waste heat recovery system for a textile fabric setting machine. Background Art

[0002] A loom is the full name for a tool that processes raw materials such as thread, silk, and linen into silk threads and then weaves them into cloth. After weaving the fabric, it also needs to be shaped, and at this time a shaping machine is needed.

[0003] The temperature of the setting machine during operation is generally around 180 to 220 degrees, the exhaust temperature can reach around 160 to 200 degrees, and the exhaust air volume is 10,000 cubic meters per hour. The existing exchange method is mainly air-duct heat exchange, with fresh air going through the outer wall of the duct and exhaust air going through the inner wall of the duct.

[0004] However, this traditional heat exchange method has certain problems. Since there is a large amount of lint and grease in the exhaust gas of the stentering machine, it is difficult to clean the waste heat using the traditional method. Once scale forms on the pipe wall, it will affect the heat exchange efficiency and there will also be fire safety hazards. Summary of the Invention

[0005] Based on this, it is necessary to provide a textile fabric setting machine flue gas waste heat recovery system to address the above technical problems, which can more easily remove the lint and grease on its surface. Since the waste heat recovery system is composed of multiple waste heat recovery units, the system can be set as an assembly structure, and the exhaust ports of multiple setting machines are respectively connected to multiple waste heat exhaust pipes, which effectively saves occupied space and improves the waste heat utilization efficiency.

[0006] The present invention provides a flue gas waste heat recovery system for a textile fabric setting machine, comprising:

[0007] Multiple waste heat recovery units are arranged longitudinally and connected end to end. Flue gas enters from the tail end of one waste heat recovery unit, passes through the multiple waste heat recovery units, and is discharged from the head end of another waste heat recovery unit.

[0008] The waste heat recovery unit includes a waste heat discharge pipe, a transverse rotating pipe and a waste heat recovery pipe; the transverse rotating pipe passes through the waste heat discharge pipe transversely, the diameter of the transverse rotating pipe is smaller than the inner diameter of the waste heat discharge pipe, the waste heat recovery pipe is installed at both ends of the transverse rotating pipe, and a water pipe assembly is provided on the waste heat recovery pipe, the water pipe assembly is located in the transverse rotating pipe, both ends of the water pipe assembly pass through the waste heat recovery pipe, and the water pipe assembly is used to pass water.

[0009] In one embodiment, mounting openings are provided on two opposite sides of the waste heat discharge pipe, and fixing seats are provided on the other two opposite sides of the waste heat discharge pipe. One side of the fixing seat is located in the waste heat discharge pipe, and the side is set as an arc surface.

[0010] In one embodiment, the fixing seat is hollow inside, and first connecting pipes are provided at both side ends of the fixing seat. A water spray hole is opened on the arc surface. One of the first connecting pipes is used for water inlet, and the other first connecting pipe is used for water outlet.

[0011] In one embodiment, the transversely rotating tube includes a first curved plate, a second curved plate, a third curved plate and a fixed ring; the two first curved plates are arranged opposite to each other, and the third curved plate is arranged between the side edges of the two first curved plates, the third curved plate is connected to the first curved plate through the second curved plate, the third curved plate is bent toward the center of the first curved plate, the two ends of the first curved plate are connected to the fixed ring, and the radius of the first curved plate is the same as the radius of the fixed ring.

[0012] In one embodiment, the first curved plate is rotatably mounted in the mounting opening at the connection between the first curved plate and the fixing ring, and curved baffles are provided on the outer surfaces of the second curved plate and the third curved plate, and the curved baffles are used to close the mounting opening. Flat baffles are provided at the ends of the second curved plate and the third curved plate, and the flat baffles are used to close the opening between the fixing ring and the first curved plate.

[0013] In one embodiment, the water spray hole is located above or below the bisector of the arc-shaped surface, and the water spray hole is inclined toward the second arc-shaped plate, and the inclined direction is away from the center line of the arc-shaped surface.

[0014] In one embodiment, in the first state, the two first curved surfaces are arranged longitudinally opposite to each other, the curved surfaces are facing the third curved plate, and there are gaps between the curved surfaces and the first curved plate, the second curved plate and the third curved plate. In the second state, the curved surfaces are movably fitted with the first curved plate.

[0015] In one embodiment, the waste heat recovery pipe fitting includes a mounting seat and a water pipe; the mounting seat is detachably mounted on the fixing ring, both ends of the water pipe pass through the mounting seat, and the two penetration positions are symmetrical to each other with respect to the central axis of the mounting seat, and a second connecting pipe is provided at the center position of the mounting seat.

[0016] In one embodiment, the water pipe includes a water inlet pipe body, a water outlet pipe body, a first arc-shaped pipe, a third connecting pipe and a second arc-shaped pipe; the water inlet pipe body and the water outlet pipe body are both arranged through the mounting seat, and both sides of the end of the water inlet pipe body and the water outlet pipe body are connected to one end of the first arc-shaped block, and the other end of the first arc-shaped block is connected to one end of the third connecting pipe, and the second arc-shaped pipe is connected between the other ends of two adjacent third connecting pipes.

[0017] In one embodiment, the cross-section of the water inlet pipe body and the water outlet pipe body consists of four arcs, two of which are parallel and the other two are relatively symmetrical.

[0018] The above-mentioned textile fabric setting machine flue gas waste heat recovery system first installs the transverse rotating pipe into the waste heat exhaust pipe. When the high-temperature flue gas passes through the waste heat exhaust pipe, it will first contact the surface of the transverse rotating pipe, and then rise upward over the transverse rotating pipe. At the same time, since the transverse rotating pipe is in direct contact with the high-temperature flue gas, the waste heat recovery pipe arranged inside it will absorb the conversion heat, so that the water flow passing through the water pipe absorbs the heat of the high-temperature flue gas. Due to the long-term flow of flue gas, the surface of the transverse rotating pipe will be covered with lint and grease. At this time, the transverse rotating pipe can be rotated by a certain angle to achieve the effect of changing the surface. At the same time, since the transverse rotating pipe in the system is relatively large and has a simple structure, it is also easier to remove the lint and grease on its surface. It should also be noted that since the waste heat recovery system is composed of multiple waste heat recovery units, the system can be set as an assembly structure, and the exhaust ports of multiple setting machines are respectively connected to multiple waste heat exhaust pipes, which effectively saves occupied space and improves the waste heat utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of the waste heat recovery system provided by the present invention;

[0021] Figure 2 A schematic cross-sectional view of the waste heat recovery unit provided by the present invention;

[0022] Figure 3 This is a schematic diagram of the planar structure of the waste heat recovery unit provided by the present invention;

[0023] Figure 4A schematic diagram of the structure of the waste heat discharge pipeline provided by the present invention;

[0024] Figure 5 A schematic structural diagram of the transversely rotating pipe provided by the present invention;

[0025] Figure 6 This is one of the structural schematic diagrams of the waste heat recovery pipe provided by the present invention;

[0026] Figure 7 This is the second structural schematic diagram of the waste heat recovery pipe provided by the present invention.

[0027] Reference numerals:

[0028] 100. Waste heat recovery unit; 110. Waste heat discharge pipe; 120. Mounting port; 130. Fixing seat; 140. First connecting pipe; 150. Arc surface; 160. Water spray hole; 210. First arc plate; 220. Second arc plate; 230. Third arc plate; 240. Fixing ring; 250. Flat baffle; 260. Arc baffle; 310. Mounting seat; 320. Water inlet pipe body; 330. Water outlet pipe body; 340. Second connecting pipe; 350. First arc pipe; 360. Third connecting pipe; 370. Second arc pipe. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0030] The following combination Figures 1 to 7 The present invention describes a waste heat recovery system for smoke from a textile fabric setting machine.

[0031] like Figures 1 to 3As shown, in one embodiment, a waste heat recovery system for flue gas of a textile fabric setting machine includes a plurality of waste heat recovery units 100, which are arranged longitudinally and connected end to end. The flue gas enters from the tail end of one waste heat recovery unit 100, passes through the plurality of waste heat recovery units 100, and is discharged from the head end of another waste heat recovery unit 100; the waste heat recovery unit 100 includes a waste heat discharge pipe 110, a transverse rotating pipe fitting and a waste heat recovery pipe fitting; the transverse rotating pipe fitting passes through the waste heat discharge pipe 110 transversely, the diameter of the transverse rotating pipe fitting is smaller than the inner diameter of the waste heat discharge pipe 110, the waste heat recovery pipe fitting is installed at both ends of the transverse rotating pipe fitting, a water pipe assembly is provided on the waste heat recovery pipe fitting, the water pipe assembly is located in the transverse rotating pipe fitting, both ends of the water pipe assembly pass through the waste heat recovery pipe fitting, and the water pipe assembly is used to pass water.

[0032] The above-mentioned textile fabric setting machine flue gas waste heat recovery system first installs the transverse rotating pipe into the waste heat exhaust pipe 110. When the high-temperature flue gas passes through the waste heat exhaust pipe 110, it will first contact the surface of the transverse rotating pipe, and then rise upward over the transverse rotating pipe. At the same time, since the transverse rotating pipe is in direct contact with the high-temperature flue gas, the waste heat recovery pipe arranged inside it will absorb the conversion heat, so that the water flow passing through the water pipe absorbs the heat of the high-temperature flue gas. Due to the long-term flow of flue gas, the surface of the transverse rotating pipe will be covered with lint and grease. At this time, the transverse rotating pipe can be rotated by a certain angle to achieve the effect of changing the surface. At the same time, since the transverse rotating pipe in the system is relatively large and has a simple structure, it is also easier to remove the lint and grease on its surface. It should also be noted that since the waste heat recovery system is composed of multiple waste heat recovery units 100, the system can be set as an assembly structure, and the exhaust ports of multiple setting machines are respectively connected to multiple waste heat exhaust pipes 110, which effectively saves space and improves the waste heat utilization efficiency.

[0033] like Figure 4 As shown, in one embodiment, mounting openings 120 are provided on two opposite sides of the waste heat discharge pipe 110, and fixing seats 130 are provided on the other two opposite sides of the waste heat discharge pipe 110. One side of the fixing seat 130 is located inside the waste heat discharge pipe 110, and the side is set as an arc surface 150.

[0034] Specifically, the mounting port 120 is used to install the transversely rotating pipe, and the fixing seat 130 is arranged on both sides of the waste heat exhaust pipe 110 where the mounting port 120 is not opened. It should be noted that when setting the fixing seat 130, it is necessary to make an opening on the surface of the waste heat exhaust pipe 110, and then the fixing seat 130 is installed at the opening for welding. Therefore, one side of the fixing seat 130 protrudes and is located in the waste heat exhaust pipe 110. In order to achieve the cleaning effect when the transversely rotating pipe is rotated, in this embodiment, the side of the fixing seat 130 located in the waste heat exhaust pipe 110 is set to an arc surface 150, so that the transversely rotating pipe can come into contact with the arc surface 150 when rotating, thereby scraping off the hair and grease attached to the surface of the transversely rotating pipe.

[0035] like Figure 5 As shown, in one embodiment, the transversely rotating tube includes a first curved plate 210, a second curved plate 220, a third curved plate 230 and a fixing ring 240; the two first curved plates 210 are arranged opposite to each other, and a third curved plate 230 is arranged between the sides of the two first curved plates 210, the third curved plate 230 is connected to the first curved plate 210 through the second curved plate 220, the third curved plate 230 is bent toward the center of the first curved plate 210, and both ends of the first curved plate 210 are connected to the fixing ring 240, and the radius of the first curved plate 210 is the same as the radius of the fixing ring 240.

[0036] Specifically, in the first state, the two first curved surfaces 150 are longitudinally opposed, facing the third curved plate 230. There are gaps between the curved surfaces 150 and the first, second, and third curved plates 210, 220, and 230, allowing high-temperature smoke to rise and be discharged along the gaps between them. In the second state, the curved surfaces 150 are flexibly engaged with the first curved plate 210. At the moment of contact, the upper and lower ends of the curved surfaces 150 remove lint and grease from the surface of the first curved plate 210. Furthermore, since there are two first curved plates 210, reversing the positions of the two first curved plates 210 during use allows the surface of the first curved plate 210 to be cleaned.

[0037] In one embodiment, the interior of the fixing seat 130 is hollow, and first connecting pipes 140 are provided on both sides of the fixing seat 130. A water spray hole 160 is opened on the arc surface 150. One first connecting pipe 140 is used for water intake, and the other first connecting pipe 140 is used for water discharge.

[0038] Specifically, since the curved surface 150 can only clean the surface of the first curved plate 210, hair and grease will also adhere to the surfaces of the second curved plate 220 and the third curved plate 230. However, since the contact area of the first curved plate 210 is larger and it is in direct contact with the high-temperature flue gas, the second curved plate 220 and the third curved plate 230 have little effect on waste heat recovery. In order to avoid excessive adhesion on the surfaces of the second curved plate 220 and the third curved plate 230, an external water pump can be started at this time to allow water to flow through a first connecting pipe 140 into the fixed seat 130 and be sprayed along the water spray hole 160. The sprayed water will flush the surfaces of the second curved plate 220 and the third curved plate 230. Preferably, the water spray hole 160 is located above or below the bisector of the curved surface 150, and the water spray hole 160 is inclined toward the second curved plate 220, and the inclination direction is away from the center line of the curved surface 150. This orientation setting enables the water flow sprayed from the water spray hole 160 to flush the surfaces of the second curved plate 220 and the third curved plate 230 to the greatest extent.

[0039] When there is no need to flush the second curved plate 220 and the third curved plate 230, the external water pump can be started to allow water to flow into one first connecting pipe 140 and water to flow out of the other first connecting pipe 140. At this time, the water flow will flow through the fixing seat 130 and clean up floating objects in the smoke that may exist inside the fixing seat 130.

[0040] In one embodiment, the first curved plate 210 is rotatably mounted at the connection with the fixing ring 240 in the mounting port 120, and curved baffles 260 are provided on the outer surfaces of the second curved plate 220 and the third curved plate 230, and the curved baffles 260 are used to close the mounting port 120, and flat baffles 250 are provided at the ends of the second curved plate 220 and the third curved plate 230, and the flat baffles 250 are used to close the opening between the fixing ring 240 and the first curved plate 210.

[0041] like Figure 6 and Figure 7 As shown, in one embodiment, the waste heat recovery pipe fitting includes a mounting seat 310 and a water pipe; the mounting seat 310 is detachably mounted on the fixing ring 240, both ends of the water pipe pass through the mounting seat 310, and the two penetration positions are symmetrical to each other with respect to the central axis of the mounting seat 310, and a second connecting pipe 340 is provided at the center position of the mounting seat 310.

[0042] Specifically, the water pipe includes an inlet pipe body 320, an outlet pipe body 330, a first arc pipe 350, a third connecting pipe 360 and a second arc pipe 370; the inlet pipe body 320 and the outlet pipe body 330 are both arranged on the mounting seat 310, and both sides of the ends of the inlet pipe body 320 and the outlet pipe body 330 are connected to one end of the first arc block, and the other end of the first arc block is connected to one end of the third connecting pipe 360, and the second arc pipe 370 is connected between the other ends of two adjacent third connecting pipes 360.

[0043] In one embodiment, the cross-section of the water inlet pipe body 320 and the water outlet pipe body 330 is composed of four arcs, two of which are parallel and the other two are relatively symmetrical.

[0044] Specifically, the cross-sections of the water inlet pipe 320 and the water outlet pipe 330 can be viewed as curved elongated holes. This structural arrangement facilitates the connection of the first curved pipe 350 and significantly increases the water inlet and outlet volumes. Furthermore, the provision of the second connecting pipe 340 allows for water injection by rotating the pipe laterally, thereby changing the heat transfer medium.

[0045] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A waste heat recovery system for flue gas from a textile fabric setting machine, characterized in that: include: Multiple waste heat recovery units are arranged longitudinally and connected end to end. Flue gas enters from the tail end of one waste heat recovery unit, passes through the multiple waste heat recovery units, and is discharged from the head end of another waste heat recovery unit. The waste heat recovery unit includes a waste heat discharge pipe, a transverse rotating pipe and a waste heat recovery pipe; the transverse rotating pipe transversely passes through the waste heat discharge pipe, the diameter of the transverse rotating pipe is smaller than the inner diameter of the waste heat discharge pipe, the waste heat recovery pipe is installed at both ends of the transverse rotating pipe, and a water pipe assembly is provided on the waste heat recovery pipe, the water pipe assembly is located in the transverse rotating pipe, both ends of the water pipe assembly pass through the waste heat recovery pipe, and the water pipe assembly is used to pass water; Mounting openings are provided on opposite sides of the waste heat discharge pipe, and fixing seats are provided on other opposite sides of the waste heat discharge pipe, wherein one side of the fixing seat is located in the waste heat discharge pipe and is configured as an arc-shaped surface; The fixing seat is hollow inside, and first connecting pipes are provided on both sides of the fixing seat. A water spray hole is opened on the arc surface, one of the first connecting pipes is used for water inlet, and the other first connecting pipe is used for water outlet; The transversely rotating tube includes a first curved plate, a second curved plate, a third curved plate and a fixing ring; the two first curved plates are arranged opposite to each other, and the third curved plate is arranged between the sides of the two first curved plates. The third curved plate is connected to the first curved plate through the second curved plate. The third curved plate is bent toward the center of the first curved plate. Both ends of the first curved plate are connected to the fixing ring. The radius of the first curved plate is the same as that of the fixing ring. The first curved plate and the fixing ring are rotatably mounted in the mounting opening at their connection points. The second curved plate and the third curved plate are provided with curved baffles on their outer surfaces for closing the mounting opening. The second curved plate and the third curved plate are provided with flat baffles at their ends for closing the opening between the fixing ring and the first curved plate. The water spray hole is located above or below the bisector of the arc surface, and the water spray hole is inclined toward the second arc plate, and the inclined direction is away from the center line of the arc surface; In the first state, the two arcuate surfaces are arranged longitudinally opposite to each other, the arcuate surfaces are facing the third arcuate plate, and there are gaps between the arcuate surfaces and the first arcuate plate, the second arcuate plate and the third arcuate plate. In the second state, the arcuate surfaces are movably fitted with the first arcuate plate.

2. The textile fabric setting machine flue gas waste heat recovery system according to claim 1 is characterized in that: The waste heat recovery pipe fitting includes a mounting seat and a water pipe; the mounting seat can be detachably mounted on the fixing ring, both ends of the water pipe pass through the mounting seat, and the two penetration positions are symmetrical to each other with the central axis of the mounting seat, and a second connecting pipe is provided at the center position of the mounting seat.

3. The textile fabric setting machine flue gas waste heat recovery system according to claim 2 is characterized in that: The water pipe includes a water inlet pipe body, a water outlet pipe body, a first arc-shaped pipe, a third connecting pipe and a second arc-shaped pipe; the water inlet pipe body and the water outlet pipe body are both arranged through the mounting seat, and the ends of the water inlet pipe body and the water outlet pipe body are connected to two of the first arc-shaped pipes, one end of the first arc-shaped pipe away from the water inlet pipe body or the water outlet pipe body is connected to one end of the third connecting pipe, and the other ends of two adjacent third connecting pipes are connected with the second arc-shaped pipe.

4. The textile fabric setting machine flue gas waste heat recovery system according to claim 3 is characterized in that: The cross-section of the water inlet pipe body and the water outlet pipe body consists of four arcs, two of which are parallel and the other two are relatively symmetrical.

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