Waste heat recovery device of setting machine

Abstract

The waste heat recovery device of the setting machine comprises a recovery box, a heat exchange pipe, an air inlet pipe, an air outlet pipe and a plurality of partition plates, the air inlet pipe and the air outlet pipe are arranged on the two opposite side walls of the recovery box respectively, the partition plates are located in the recovery box, and the partition plates are distributed in the direction from the air inlet pipe to the air outlet pipe. The adjacent partition plates are arranged on the opposite inner side walls of the recycling box respectively, the heat exchange pipe is located in the recycling box, the two ends of the heat exchange pipe penetrate out of the recycling box, the heat exchange pipe is a coiled pipe, and the heat exchange pipe is distributed in the moving direction of waste gas. The waste gas preheating device has the effect that the waste gas preheating utilization rate is increased by prolonging the retention time of waste gas in the heat exchange box.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of waste heat recovery, in particular to a waste heat recovery device of a setting machine. BACKGROUND

[0002] The heat setting machine is one of the main energy-consuming equipment in the textile dyeing and finishing industry. The heat setting machine is a device that uses hot air to dry and finish the fabric and make it set. The supply of hot air can be achieved in various ways, such as directly burning gas or light diesel oil in the setting machine, using circulating heat transfer oil or steam heating, or electric heating. A large amount of heat energy generated by fabric processing and setting is lost to the atmosphere with waste gas. The lost heat not only wastes energy but also pollutes the environment.

[0003] At present, the Chinese utility model patent with publication number CN218270305U discloses a waste heat recovery system of a setting machine, which comprises a setting machine body, a filter box and a heat exchange box. A waste gas pipe is connected between the top of the setting machine body and the filter box. A connecting pipe is connected between the filter box and the heat exchange box. A waste gas outlet pipe is fixedly connected to the side of the heat exchange box away from the filter box. A spiral air inlet pipe is fixedly installed inside the heat exchange box. An air inlet is arranged at one end of the spiral air inlet pipe. A backflow pipe is fixedly connected to the end of the spiral air inlet pipe away from the air inlet. The backflow pipe is connected to the setting machine body. The application increases the residence time of the air to be heated, thereby utilizing more waste heat.

[0004] Since the waste gas is introduced into the heat exchange box for heat exchange and then discharged from the waste gas outlet pipe, although the spiral air inlet pipe has a large contact area with the waste gas, the residence time of the waste gas in the heat exchange box is short, resulting in a large amount of waste gas required for the actual air to be heated. Utility model content

[0005] In order to increase the residence time of the waste gas in the heat exchange box and thereby improve the utilization rate of waste gas preheating, the present application provides a waste heat recovery device of a setting machine.

[0006] The waste heat recovery device of a setting machine provided by the present application adopts the following technical scheme:

[0007] A waste heat recovery device of a setting machine, comprising a recovery box, a heat exchange pipe, an air inlet pipe, an air outlet pipe and a plurality of partitions. The air inlet pipe and the air outlet pipe are respectively arranged on the opposite two side walls of the recovery box. The partitions are located inside the recovery box. The plurality of partitions are respectively distributed along the direction from the air inlet pipe to the air outlet pipe. Adjacent partitions are respectively arranged on the opposite inner side walls of the recovery box. The heat exchange pipe is located inside the recovery box. Both ends of the heat exchange pipe pass out of the recovery box. The heat exchange pipe is a serpentine pipe. The heat exchange pipe is distributed along the moving direction of the waste gas.

[0008] By adopting the above technical solution, the air inlet pipe is used to introduce the exhaust gas from the stenter, the air outlet pipe is used to discharge the exhaust gas after waste heat recovery from the recovery box, the heat exchange pipe is used to introduce the air to be heated, and the baffle is used to guide the movement path of the exhaust gas from the stenter, so that the exhaust gas from the stenter moves along a path that meanders multiple times in the plane. The heat exchange pipe is a serpentine pipe, which is a pipe that meanders multiple times in the plane. The shape of the heat exchange pipe and the baffle form the same path for the movement of the exhaust gas. The movement path of the exhaust gas from the stenter in the recovery box is increased, the residence time of the exhaust gas from the stenter in the recovery box is increased, and at the same time, the contact area and time between the exhaust gas and the heat exchange pipe are improved, thus improving the utilization rate of the exhaust gas.

[0009] Optionally, the heat exchange tube is provided with a number of fins.

[0010] By adopting the above technical solution, fins can increase the outer surface area of ​​the heat exchange tube and the contact area between the heat exchange tube and the exhaust gas, thereby improving the heat exchange efficiency.

[0011] Optionally, a filter assembly is provided between the partition and the air inlet pipe. The filter assembly includes two filter frames and two filter screens. The two filter frames are distributed along the direction from the air inlet pipe to the air outlet pipe. The filter frames are disposed in the recycling bin. The two filter screens are slidably installed on the two filter frames respectively. The mesh size of the two filter screens gradually decreases along the direction from the air inlet pipe to the air outlet pipe. The two filter screens are used to filter lint and oil vapor respectively.

[0012] By adopting the above technical solution, since the exhaust gas includes carbon dioxide, sulfur dioxide, oxygen, lint, and oil, when the exhaust gas enters the recovery box, the lint is filtered by the filter screen with larger mesh, and some of the oil is filtered by the filter screen with smaller mesh, reducing the contact between lint and oil with the heat exchange tube. The staff can replace the filter screen in a timely manner as needed to maintain the filtration effect of the filter screen.

[0013] Optionally, a handle is provided on the filter screen.

[0014] By adopting the above technical solution, since the oil and gas are located inside the recovery box, the recovery box is in an oily state. The handle makes it easy for staff to remove the filter screen for timely replacement.

[0015] Optionally, the filter screen is provided with a positioning element, which includes a positioning rod and a positioning spring. The length direction of the positioning rod is perpendicular to the installation direction of the filter screen. The filter frame is provided with a positioning groove, and the positioning spring is used to keep one end of the positioning rod located in the positioning groove.

[0016] By adopting the technical scheme, when the filter screen is replaced, the staff moves the positioning rod against the elastic force of the positioning spring to the direction away from the positioning groove, and after the positioning rod is separated from the positioning groove, the staff can take down the filter screen from the filter frame through the handle, and the structure is simple and convenient for the staff to operate.

[0017] Optionally, the positioning rod is located in the handle, and the positioning rod further comprises a push plate, the push plate is arranged on the positioning rod, and the push plate penetrates out of the handle.

[0018] By adopting the technical scheme, the staff first holds the handle and pushes the push plate with fingers, the push plate drives the positioning rod to move against the elastic force of the positioning spring to the direction away from the positioning groove, and then the staff can take down the filter screen from the filter frame without changing the holding state, and the operation is simple and convenient.

[0019] Optionally, the recycling box comprises a box body, a cover body and a locking piece, the cover body is rotationally connected to the box body, the locking piece comprises a locking plate, a locking block, a limiting block and a torsional spring, the locking plate is arranged on the cover body, the locking block is rotationally connected to the box body, the limiting block is arranged on the locking block, a limiting groove is arranged on the locking plate, and the torsional spring is used to keep the limiting block in the limiting groove.

[0020] By adopting the technical scheme, the cover body is used to cover the box body, and the cover body and the box body form a sealed space, when the filter screen needs to be replaced or the surface of the heat exchange pipe needs to be cleaned, the staff can rotate the locking block against the elastic force of the torsional spring, so that the limiting block is separated from the limiting groove on the locking plate, the cover body is rotated relative to the box body, and the filter screen and the heat exchange pipe are exposed.

[0021] Optionally, the locking block is further provided with a flip plate which is convenient for the staff to push.

[0022] By adopting the technical scheme, the flip plate is convenient for the staff to operate the locking block, and the convenience of operation is improved.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. The distribution of the partition plate prolongs the time of the setting machine waste gas in the recycling box, and the setting machine waste gas contacts with the heat exchange pipe through the shape of the heat exchange pipe, so that the contact area of the setting machine waste gas and the heat exchange pipe is increased, and the heat exchange efficiency is improved.

[0025] 2. The filter assembly is used to filter the waste gas, so that the lint and the oil gas are reduced to contact the heat exchange pipe.

[0026] 3. The positioning piece is convenient for the staff to disassemble and assemble the filter screen, and the convenience of installation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structure diagram of the waste heat recovery device of the setting machine.

[0028] Figure 2 is Figure 1 is an enlarged view of A in FIG. 1.

[0029] Figure 3 is Figure 1 is a structure diagram of the inside of the box body in FIG. 1.

[0030] Figure 4 is Figure 3 is a sectional view of the filter screen in FIG. 1, for showing the positioning member.

[0031] Figure 5 is Figure 3 is a layout diagram of the heat exchange pipe in the box body in FIG. 1.

[0032] Reference signs: 1, recovery box; 11, box body; 12, cover body; 13, locking member; 131, locking plate; 132, locking block; 133, limiting block; 134, torsional spring; 135, flap; 136, limiting groove; 2, heat exchange pipe; 3, air inlet pipe; 4, air outlet pipe; 5, partition plate; 6, filter assembly; 61, filter frame; 611, positioning groove; 62, filter screen; 63, handle; 7, positioning member; 71, positioning rod; 72, positioning spring; 73, push plate; 74, sliding groove; 8, fin. DETAILED DESCRIPTION

[0033] The following will be described in detail in combination with the accompanying drawings. Figure 1 - the accompanying drawings Figure 5 The present application is further described in detail.

[0034] The embodiments of the present application disclose a waste heat recovery device of a setting machine. Referring to Figure 1 and Figure 2The waste heat recovery device of the setting machine comprises a recovery box 1, a plurality of heat exchange pipes 2, an air inlet pipe 3, an air outlet pipe 4, a plurality of partitions 5 and a filter assembly 6. The recovery box 1 comprises a box body 11, a cover body 12 and a locking piece 13. The air inlet pipe 3 and the air outlet pipe 4 are distributed along the length direction of the box body 11. The air inlet pipe 3 and the air outlet pipe 4 are respectively located on both sides of the box body 11. One end of the air inlet pipe 3 is fixedly arranged on the box body 11. The air inlet pipe 3 is communicated with the box body 11. One end of the air outlet pipe 4 is fixedly arranged on the box body 11. The cover body 12 is rotationally connected to the box body 11. The cover body 12 is used for covering the opening of the box body 11. The locking piece 13 comprises a locking plate 131, a locking block 132, a limiting block 133 and a torsional spring 134. The locking plate 131 is fixedly arranged on the cover body 12. The locking block 132 is rotationally connected to the box body 11 along the length direction of the box body 11. The limiting block 133 is fixedly arranged on the locking block 132. The torsional spring 134 is coaxially arranged with the axis of the locking block 132. One end of the torsional spring 134 is fixedly arranged on the box body 11. The other end of the torsional spring 134 is fixedly arranged on the locking block 132. A limiting groove 136 is arranged on the locking plate 131. The limiting groove 136 is used for clamping cooperation with the limiting block 133. A flap 135 is further arranged on the locking block 132. The flap 135 facilitates the staff to move the locking block 132.

[0035] Reference Figure 2 And Figure 3 The plurality of partitions 5, the filter assembly 6 and the heat exchange pipes 2 are located in the box body 11. The filter assembly 6 and the plurality of partitions 5 are distributed along the direction from the air inlet pipe 3 to the air outlet pipe 4. The filter assembly 6 comprises two filter frames 61 and two filter screens 62. The two filter frames 61 are distributed along the direction from the air inlet pipe 3 to the air outlet pipe 4. The filter frame 61 is fixedly arranged in the box body 11. The filter screen 62 is slidingly connected to the filter frame 61 along the depth direction of the box body 11. The pore size of the filter screen 62 close to the air inlet pipe 3 is larger than the pore size of the filter screen 62 close to the air outlet pipe 4. The filter screen 62 close to the air inlet pipe 3 is used for filtering fluff. The filter screen 62 close to the air outlet pipe 4 is used for filtering oil gas.

[0036] Reference Figure 3 And Figure 4The filter screen 62 is fixedly arranged on the inner bottom wall of the box body 11 and is provided with a handle 63 away from the box body 11, and the filter screen 62 is provided with a positioning piece 7, the positioning piece 7 comprises a positioning rod 71, a positioning spring 72 and a push plate 73, the length direction of the positioning rod 71 is parallel to the width direction of the box body 11, the handle 63 is provided with a sliding groove 74 extending along the width direction of the box body 11, the positioning rod 71 is slidably connected in the sliding groove 74, the push plate 73 is fixedly arranged on the positioning rod 71 and exposed from the sliding groove 74, the filter frame 61 is provided with a positioning groove 611 for clamping the one end of the positioning rod 71, and the length of the positioning spring 72 is parallel to the length direction of the positioning rod 71, one end of the positioning spring 72 is fixedly arranged on the inner side wall of the sliding groove 74, and the other end of the positioning spring 72 is fixedly arranged on the positioning rod 71.

[0037] Reference Figure 3 And Figure 5 The plurality of partitions 5 are arranged at intervals and are parallel to the width direction of the box body 11, adjacent partitions 5 are fixedly arranged on the opposite two inner side walls of the box body 11 respectively, the plurality of heat exchange pipes 2 are distributed along the depth direction of the box body 11, the heat exchange pipes 2 are serpentine pipes, both ends of the heat exchange pipes 2 pass through the inner side walls of the box body 11, the heat exchange pipes 2 are located between adjacent partitions 5 and pass through the intervals between the partitions 5 and the box body 11, the heat exchange pipes 2 are distributed along the moving direction of the exhaust gas, and a plurality of fins 8 are distributed on the heat exchange pipes 2 along the length direction of the heat exchange pipes 2.

[0038] The implementation principle of the waste heat recovery device of the setting machine is as follows: when the waste heat recovery device is running, the exhaust gas of the setting machine passes into the box body 11 through the air inlet pipe 3, the lint and oil gas in the exhaust gas are blocked by the filter screen 62 in sequence, the exhaust gas passes through the filter screen 62 and is distributed through the partitions 5, moves along the multiple detours towards the air outlet pipe 4, the heat exchange pipes 2 are shaped in accordance with the movement direction of the exhaust gas, and the heat of the exhaust gas is transferred to the heat exchange pipes 2, and the fins 8 on the heat exchange pipes 2 can improve the heat exchange effect of the exhaust gas.

[0039] When the filter screen 62 needs to be replaced, the staff can separate the cover body 12 from the box body 11 through the locking piece 13, rotate the cover body 12, expose the filter screen 62, hold the handle 63 and push the push plate 73 to make the positioning rod 71 away from the positioning groove 611, and then the filter screen 62 can be detached from the filter frame 61.

[0040] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A waste heat recovery device for a setting machine, characterized in that: The system includes a recovery box (1), a heat exchange tube (2), an inlet pipe (3), an outlet pipe (4), and several partitions (5). The inlet pipe (3) and the outlet pipe (4) are respectively located on opposite side walls of the recovery box (1). The partitions (5) are located inside the recovery box (1). Several partitions (5) are distributed along the direction from the inlet pipe (3) to the outlet pipe (4). Adjacent partitions (5) are respectively located on opposite inner side walls of the recovery box (1). The heat exchange tube (2) is located inside the recovery box (1). Both ends of the heat exchange tube (2) extend out of the recovery box (1). The heat exchange tube (2) is a serpentine tube and is distributed along the direction of waste gas movement.

2. The waste heat recovery device for a stenter according to claim 1, characterized in that: The heat exchange tube (2) is provided with several fins (8).

3. The waste heat recovery device for a setting machine according to claim 1, characterized in that: A filter assembly (6) is provided between the partition (5) and the air inlet pipe (3). The filter assembly (6) includes two filter frames (61) and two filter screens (62). The two filter frames (61) are distributed along the direction from the air inlet pipe (3) to the air outlet pipe (4). The filter frames (61) are located inside the recycling box (1). The two filter screens (62) are slidably installed on the two filter frames (61). The mesh size of the two filter screens (62) gradually decreases along the direction from the air inlet pipe (3) to the air outlet pipe (4). The two filter screens (62) are used to filter lint and oil gas, respectively.

4. The waste heat recovery device for a stenter according to claim 3, characterized in that: A handle (63) is provided on the filter screen (62).

5. The waste heat recovery device for a stenter according to claim 4, characterized in that: The filter screen (62) is provided with a positioning element (7), which includes a positioning rod (71) and a positioning spring (72). The length direction of the positioning rod (71) is perpendicular to the installation direction of the filter screen (62). The filter frame (61) is provided with a positioning groove (611). The positioning spring (72) is used to keep one end of the positioning rod (71) in the positioning groove (611).

6. The waste heat recovery device for a stenter according to claim 5, characterized in that: The positioning rod (71) is located inside the grip (63). The positioning rod (71) also includes a lever (73), which is disposed on the positioning rod (71) and extends out of the grip (63).

7. The waste heat recovery device for a stenter according to claim 1, characterized in that: The recycling bin (1) includes a bin body (11), a cover (12), and a locking element (13). The cover (12) is rotatably connected to the bin body (11). The locking element (13) includes a locking plate (131), a locking block (132), a limiting block (133), and a torsion spring (134). The locking plate (131) is disposed on the cover (12). The locking block (132) is rotatably connected to the bin body (11). The limiting block (133) is disposed on the locking block (132). A limiting groove (136) is provided on the locking plate (131). The torsion spring (134) is used to keep the limiting block (133) within the limiting groove (136).

8. The waste heat recovery device for a stenter according to claim 7, characterized in that: The locking block (132) is also equipped with a flip plate (135) that is easy for staff to operate.

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