Flue gas waste heat recovery system of textile fabric setting machine

Abstract

The invention relates to the field of textile waste heat recovery, in particular to a flue gas waste heat recovery system of a textile fabric setting machine. Comprising a plurality of waste heat recovery units, the waste heat recovery units are longitudinally arranged and connected end to end, and smoke enters from the tail end of one waste heat recovery unit, passes through the waste heat recovery units and is discharged from the head end of the other waste heat recovery unit; the waste heat recovery unit comprises a waste heat discharge pipeline, a transverse rotating pipe fitting and a waste heat recovery pipe fitting; the transverse rotating pipe fitting transversely penetrates through the waste heat discharging pipeline, the diameter of the transverse rotating pipe fitting is smaller than the inner diameter of the waste heat discharging pipeline, the waste heat recycling pipe fittings are installed at the two ends of the transverse rotating pipe fitting, and water pipe assemblies are arranged on the waste heat recycling pipe fittings and located in the transverse rotating pipe fitting. The system can be arranged to be of an assembly structure, smoke outlets of a plurality of setting machines are connected into a plurality of waste heat discharging pipelines respectively, the occupied space is effectively saved, and the waste heat utilization efficiency is improved.

Description

Technical Field

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

[0002] A loom is the full name of a tool that processes raw materials such as threads, silk, and hemp into silk threads and then weaves them into fabrics. After the fabric is woven, it is necessary to set the fabric, and at this time, a setting machine is required.

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

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

[0005] Based on this, in view of the above technical problems, it is necessary to provide a flue gas waste heat recovery system for a textile fabric setting machine, which is easier to remove the fluff and grease on its surface. Since the waste heat recovery system is composed of multiple waste heat recovery units, this system can be set as an assembly structure, and the exhaust ports of multiple setting machines are respectively connected to multiple waste heat discharge pipelines, effectively saving the occupied space and improving the waste heat utilization efficiency.

[0006] The present invention provides a flue gas waste heat recovery system for a textile fabric setting machine, including: Multiple waste heat recovery units, which are longitudinally arranged and connected end to end. The flue gas enters from the tail end of one of the waste heat recovery units, passes through multiple waste heat recovery units, and exits from the head end of another waste heat recovery unit; The waste heat recovery unit includes a waste heat discharge pipeline, a laterally rotating pipe fitting, and a waste heat recovery pipe fitting; the laterally rotating pipe fitting horizontally penetrates the waste heat discharge pipeline, the diameter of the laterally rotating pipe fitting is smaller than the inner diameter of the waste heat discharge pipeline, the waste heat recovery pipe fittings are installed at both ends of the laterally rotating pipe fitting, a water pipe assembly is arranged on the waste heat recovery pipe fitting, the water pipe assembly is located inside the laterally rotating pipe fitting, and both ends of the water pipe assembly penetrate the waste heat recovery pipe fitting, and the water pipe assembly is used for passing water flow.

[0007] In one embodiment, mounting openings are provided on both 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 surface of the fixing seat is located inside the waste heat discharge pipe, and this side surface is set as an arc surface.

[0008] In one embodiment, the inside of the fixing seat is hollow, and first connecting pipes are provided at both ends of the fixing seat. Spray holes are provided 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.

[0009] In one embodiment, the transverse rotating pipe fitting includes a first arc plate, a second arc plate, a third arc plate and a fixing ring; the two first arc plates are arranged oppositely, and the third arc plate is arranged between the sides of the two first arc plates. The third arc plate is connected to the first arc plate through the second arc plate. The third arc plate bends towards the center of the circle of the first arc plate. Both ends of the first arc plate are connected to the fixing ring, and the radius of the first arc plate is the same as the radius of the fixing ring.

[0010] In one embodiment, the connection part between the first arc plate and the fixing ring is rotatably installed in the mounting opening. Arc-shaped baffles are provided on the outer surfaces of the second arc plate and the third arc plate, and the arc-shaped baffles are used to close the mounting opening. Plane baffles are provided at the ends of the second arc plate and the third arc plate, and the plane baffles are used to close the opening between the fixing ring and the first arc plate.

[0011] In one embodiment, the spray holes are located above or below the bisector of the arc surface, the spray holes are inclined towards the second arc plate, and the inclination direction is away from the midline of the arc surface.

[0012] In one embodiment, in the first state, the two first arc surfaces are arranged longitudinally opposite to each other, the arc surface faces the third arc plate, and there are intervals between the arc surface and the first arc plate, the second arc plate and the third arc plate. In the second state, the arc surface is movably attached to the first arc plate.

[0013] In one embodiment, the waste heat recovery pipe fitting includes a mounting seat and a water pipe; the mounting seat is detachably installed on the fixing ring. Both ends of the water pipe penetrate through the mounting seat, and the two penetration positions are symmetrical with respect to the central axis of the mounting seat. A second connecting pipe is provided at the central position of the mounting seat.

[0014] In one embodiment, the water pipe includes an inlet pipe body, an outlet pipe body, a first arc pipe, a third connecting pipe and a second arc pipe; the inlet pipe body and the outlet pipe body are both arranged on the mounting seat, and both sides of the ends of the inlet pipe body and the outlet pipe body 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, and the second arc pipe is connected between the other ends of two adjacent third connecting pipes.

[0015] In one embodiment, the cross-sections of the water inlet pipe body and the water outlet pipe body are composed of four arcs, two of which are parallel and the other two are relatively symmetrical.

[0016] In the above-mentioned textile fabric setting machine flue gas waste heat recovery system, the transverse rotating pipe is first installed in 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 in size 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 utilization efficiency of waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces 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 creative work.

[0018] Figure 1 A schematic diagram of the structure of the waste heat recovery system provided by the present invention; Figure 2 A schematic cross-sectional structure diagram of a waste heat recovery unit provided by the present invention; Figure 3 A schematic diagram of the planar structure of the waste heat recovery unit provided by the present invention; Figure 4 A schematic diagram of the structure of the waste heat discharge pipeline provided by the present invention; Figure 5Schematic structural diagram of the laterally rotating pipe fitting provided by the present invention; Figure 6 One of the schematic structural diagrams of the waste heat recovery pipe fitting provided by the present invention; Figure 7 Another schematic structural diagram of the waste heat recovery pipe fitting provided by the present invention.

[0019] Reference numerals: 100, waste heat recovery unit; 110, waste heat discharge pipe; 120, installation opening; 130, fixed 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 implementation manners

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] The following combines Figures 1 to 7 to describe a waste heat recovery system for the flue gas of a textile fabric stenter provided by the present invention.

[0022] As Figures 1 to 3 shown, in one embodiment, a waste heat recovery system for the flue gas of a textile fabric stenter includes a plurality of waste heat recovery units 100. The plurality of waste heat recovery units 100 are longitudinally arranged 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 laterally rotating pipe fitting, and a waste heat recovery pipe fitting. The laterally rotating pipe fitting horizontally penetrates the waste heat discharge pipe 110. The diameter of the laterally 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 laterally rotating pipe fitting. A water pipe assembly is provided on the waste heat recovery pipe fitting. The water pipe assembly is located inside the laterally rotating pipe fitting. Both ends of the water pipe assembly penetrate the waste heat recovery pipe fitting. The water pipe assembly is used for passing water flow.

[0023] In the above-mentioned textile fabric setting machine flue gas waste heat recovery system, the transverse rotating pipe is first installed in 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 in size 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 occupied space and improves the waste heat utilization efficiency.

[0024] like Figure 4 As shown, in one embodiment, installation openings 120 are opened on two opposite sides of the waste heat discharge pipe 110, and fixing seats 130 are arranged on the other two opposite sides of the waste heat discharge pipe 110. One side of the fixing seat 130 is located in the waste heat discharge pipe 110, and the side is arranged as an arc surface 150.

[0025] Specifically, the installation opening 120 is used to install the transverse rotating pipe, and the fixing seat 130 is arranged on both sides of the waste heat discharge pipe 110 where the installation opening 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 discharge 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 discharge pipe 110. In order to achieve the effect of cleaning when the transverse rotating pipe is rotated, in this embodiment, the side of the fixing seat 130 located in the waste heat discharge pipe 110 is set to an arc surface 150, so that the transverse 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 transverse rotating pipe.

[0026] like Figure 5As shown, in one embodiment, the laterally rotatable pipe fitting includes a first arc-shaped plate 210, a second arc-shaped plate 220, a third arc-shaped plate 230, and a fixing ring 240; two first arc-shaped plates 210 are arranged oppositely, and a third arc-shaped plate 230 is arranged between the sides of the two first arc-shaped plates 210. The third arc-shaped plate 230 is connected to the first arc-shaped plate 210 through the second arc-shaped plate 220. The third arc-shaped plate 230 bends towards the center of the circle of the first arc-shaped plate 210. Both ends of the first arc-shaped plate 210 are connected to the fixing ring 240, and the radius of the first arc-shaped plate 210 is the same as the radius of the fixing ring 240.

[0027] Specifically, in the first state, the two first arc-shaped surfaces 150 are arranged longitudinally opposite to each other, the arc-shaped surface 150 faces the third arc-shaped plate 230, and there are intervals between the arc-shaped surface 150 and the first arc-shaped plate 210, the second arc-shaped plate 220, and the third arc-shaped plate 230. Therefore, the high-temperature flue gas will rise and discharge along the intervals among the four. In the second state, the arc-shaped surface 150 is in active contact with the first arc-shaped plate 210. At the moment of contact, the upper and lower ends of the arc-shaped surface 150 will remove the fluff and grease on the surface of the first arc-shaped plate 210. And since there are two first arc-shaped plates 210, during use, while reversing the positions of the two first arc-shaped plates 210, it is also possible to clean the surfaces of the first arc-shaped plates 210.

[0028] In one embodiment, the fixing seat 130 is hollow inside, and first connecting pipes 140 are arranged at both side ends of the fixing seat 130. Water spraying holes 160 are formed on the arc-shaped surface 150. One first connecting pipe 140 is used for water inlet, and the other first connecting pipe 140 is used for water outlet.

[0029] Specifically, since the arc-shaped surface 150 can only clean the surface of the first arc-shaped plate 210, fluff and grease will also adhere to the surfaces of the second arc-shaped plate 220 and the third arc-shaped plate 230. However, since the contact area of the first arc-shaped plate 210 is larger and it is in direct contact with the high-temperature flue gas, the second arc-shaped plate 220 and the third arc-shaped plate 230 have little impact on waste heat recovery. In order to avoid excessive adhesion on the surfaces of the second arc-shaped plate 220 and the third arc-shaped plate 230, an external water pump can be started at this time to make the water flow into the fixing seat 130 through one first connecting pipe 140 and spray out along the water spraying holes 160. The sprayed water flow will wash the surfaces of the second arc-shaped plate 220 and the third arc-shaped plate 230. Preferably, the water spraying holes 160 are located above or below the bisector of the arc-shaped surface 150, the water spraying holes 160 are inclined towards the second arc-shaped plate 220, and the inclination direction is away from the midline of the arc-shaped surface 150. This orientation setting enables the water flow sprayed from the water spraying holes 160 to wash the surfaces of the second arc-shaped plate 220 and the third arc-shaped plate 230 in the largest range.

[0030] When it is not necessary to flush the second arc plate 220 and the third arc plate 230, an external water pump can be started to make one first connecting pipe 140 intake water and the other first connecting pipe 140 discharge water. At this time, the water flow will flow through the fixing seat 130 and clean the floating substances in the flue gas that may exist inside the fixing seat 130.

[0031] In one embodiment, the connection between the first arc plate 210 and the fixing ring 240 is rotatably installed in the installation opening 120. Arc-shaped baffles 260 are provided on the outer surfaces of the second arc plate 220 and the third arc plate 230. The arc-shaped baffles 260 are used to close the installation opening 120. Plane baffles 250 are provided at the ends of the second arc plate 220 and the third arc plate 230. The plane baffles 250 are used to close the opening between the fixing ring 240 and the first arc plate 210.

[0032] As Figure 6 and Figure 7 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 installed on the fixing ring 240. Both ends of the water pipe penetrate through the mounting seat 310, and the two penetration positions are symmetrical with respect to the central axis of the mounting seat 310. A second connecting pipe 340 is provided at the central position of the mounting seat 310.

[0033] Specifically, the water pipe includes a water inlet pipe body 320, a water outlet pipe body 330, a first arc pipe 350, a third connecting pipe 360, and a second arc pipe 370; the water inlet pipe body 320 and the water outlet pipe body 330 are both penetratingly arranged on the mounting seat 310. One end of each of the two sides of the ends of the water inlet pipe body 320 and the water outlet pipe body 330 is connected to one end of a first arc-shaped block, and the other end of each first arc-shaped block is connected to one end of a third connecting pipe 360. A second arc pipe 370 is connected between the other ends of two adjacent third connecting pipes 360.

[0034] In one embodiment, the cross-sections of the water inlet pipe body 320 and the water outlet pipe body 330 are composed of four arcs, two of which are parallel and the other two are relatively symmetrical.

[0035] Specifically, the cross-sections of the water inlet pipe body 320 and the water outlet pipe body 330 can both be regarded as curved long holes. This structural setting facilitates the connection of the first arc pipe 350 and greatly increases the water intake and water output. At the same time, the setting of the second connecting pipe 340 enables water injection to be carried out inside the laterally rotatable pipe fitting, thereby changing the heat-conducting medium.

[0036] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0037] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. A waste heat recovery system for flue gas from a textile fabric setting machine, characterized in that: include: A plurality of waste heat recovery units are arranged longitudinally and connected head to tail, and flue gas enters from the tail end of one waste heat recovery unit, passes through the plurality of 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 penetrates 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 arranged on the waste heat recovery pipe, the water pipe assembly is located in the transverse rotating pipe, both ends of the water pipe assembly penetrate the waste heat recovery pipe, and the water pipe assembly is used to pass water.

2. The textile fabric setting machine flue gas waste heat recovery system according to claim 1 is characterized in that: The waste heat discharge pipe is provided with installation openings on two opposite sides thereof, and fixed seats are provided on the other two opposite sides thereof. A side surface of the fixed seat is located in the waste heat discharge pipe, and the side surface is provided as an arc surface.

3. The textile fabric setting machine flue gas waste heat recovery system according to claim 2 is characterized in that: The fixing seat is hollow inside, and first connecting pipes are arranged 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.

4. The textile fabric setting machine flue gas waste heat recovery system according to claim 3 is characterized in that: The transversely rotating tube includes a first arc plate, a second arc plate, a third arc plate and a fixed ring; the two first arc plates are arranged opposite to each other, and the third arc plate is arranged between the side edges of the two first arc plates, the third arc plate is connected to the first arc plate through the second arc plate, the third arc plate is bent toward the center of the first arc plate, the two ends of the first arc plate are connected to the fixed ring, and the radius of the first arc plate is the same as the radius of the fixed ring.

5. The textile fabric setting machine flue gas waste heat recovery system according to claim 4 is characterized in that: The first arc plate is rotatably installed in the installation opening at the connection between the first arc plate and the fixing ring, and the outer surfaces of the second arc plate and the third arc plate are provided with arc baffles, and the arc baffles are used to close the installation opening. The ends of the second arc plate and the third arc plate are provided with flat baffles, and the flat baffles are used to close the opening between the fixing ring and the first arc plate.

6. The textile fabric setting machine flue gas waste heat recovery system according to claim 5, characterized in that: 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.

7. The textile fabric setting machine flue gas waste heat recovery system according to claim 6 is characterized in that: In the first state, the two first curved surfaces are arranged longitudinally opposite to each other, the curved surfaces are opposite to 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.

8. The textile fabric setting machine flue gas waste heat recovery system according to claim 4 is characterized in that: 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 penetrate 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 arranged at the center position of the mounting seat.

9. The textile fabric setting machine flue gas waste heat recovery system according to claim 8, characterized in that: The water pipe includes an inlet pipe body, an outlet pipe body, a first arc pipe, a third connecting pipe and a second arc pipe; the inlet pipe body and the outlet pipe body are both arranged through the mounting seat, and both sides of the ends of the inlet pipe body and the outlet pipe body are connected to one end of the first arc block, the other end of the first arc block is connected to one end of the third connecting pipe, and the second arc pipe is connected between the other ends of two adjacent third connecting pipes.

10. The textile fabric setting machine flue gas waste heat recovery system according to claim 9, characterized in that: The cross-sections of the water inlet pipe body and the water outlet pipe body are composed of four arcs, two of which are parallel and the other two are relatively symmetrical.

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