High-temperature waste gas waste heat recovery device of printing and dyeing setting machine

Abstract

The utility model belongs to the field of setting equipment and relates to a high-temperature waste gas waste heat recovery device of a printing and dyeing setting machine. The high-temperature waste gas waste heat recovery device comprises a rack, a setting machine body, a preheating box and a conveying belt assembly, the conveying belt assembly and the preheating box are both arranged on the rack, the conveying belt assembly penetrates through the preheating box and the setting machine body, the waste heat recovery device further comprises a heat exchange box and a waste gas discharge pipe, and the heat exchange box is provided with a first heat exchange cavity; one end of the waste gas discharge pipe is communicated with an inner cavity of the setting machine body, the other end of the waste gas discharge pipe penetrates through the first heat exchange cavity and extends out of the heat exchange box, the first heat exchange cavity is connected with a first air inlet pipeline and a first air outlet pipeline, the first air inlet pipeline is communicated with the external environment, and the first air outlet pipeline is connected with the preheating box. While the high-temperature waste gas waste heat of the setting machine is recovered, the influence on the fabric quality is reduced, and the fabric quality is improved.

Description

Technical Field

[0001] The present application belongs to the field of setting equipment and relates to a device for recovering waste heat from high-temperature exhaust gas of a printing and dyeing setting machine. Background Art

[0002] The setting machine is a machine used for industrial manufacturing and is mainly used for setting fabrics. During the use of the setting machine, the fabric is usually heated. When the fabric reaches a certain temperature, it will maintain a certain

[0003] Time causes the fabric structure to change and achieve the purpose of shaping.

[0004] Patent CN217839424U discloses a waste heat recycling printing and dyeing setting machine, including a setting machine body, a support platform is provided at the feeding end of the setting machine body, a material shaking part and a preheating part are provided on the support platform in sequence along the delivery direction of the fabric, a transmission part is provided between the preheating part and the material shaking part, and an air supply part is provided between the preheating part and the setting machine body. The air supply part is used to send the hot air in the setting machine body into the preheating part, and under the action of the preheating part, the preheating treatment of the passing fabric is realized, thereby improving the overall setting quality of the fabric.

[0005] However, the above-mentioned setting machine still has the following defects: the exhaust gas of the setting machine directly acts on the fabric, which will affect the quality of the fabric. Utility Model Content

[0006] In order to recover the waste heat of high-temperature exhaust gas from a setting machine while reducing the impact on fabric quality, the present application provides a waste heat recovery device for high-temperature exhaust gas from a printing and dyeing setting machine.

[0007] The present application provides a high-temperature waste heat recovery device for waste gas from a printing and dyeing setting machine, which adopts the following technical solution:

[0008] A waste heat recovery device for high-temperature exhaust gas from a printing and dyeing setting machine comprises a frame, a setting machine body, a preheating box, and a conveyor belt assembly. The conveyor belt assembly and the preheating box are both arranged on the frame, and the conveyor belt assembly passes through the preheating box and the setting machine body. The waste heat recovery device also comprises a heat exchange box and a waste gas discharge pipe. The heat exchange box is provided with a heat exchange cavity 1, one end of the waste gas discharge pipe is communicated with the inner cavity of the setting machine body, and the other end of the waste gas discharge pipe passes through the heat exchange cavity 1 and extends to the outside of the heat exchange box. The heat exchange cavity 1 is connected with an air inlet pipeline 1 and an air outlet pipeline 1, the air inlet pipeline 1 is communicated with the external environment, and the air outlet pipeline 1 is connected to the preheating box.

[0009] By adopting the above technical solution, the heat generated when the shaping machine body is running is discharged through the exhaust gas discharge pipe. Since the exhaust gas discharge pipe passes through the heat exchange chamber one, the fresh air entering the heat exchange chamber one from the air inlet pipe one can exchange heat with the exhaust gas discharge pipe, and become hot air to flow into the preheating box through the air outlet pipe one to heat the fabric in the preheating box. Compared with the exhaust gas, the hot air coming out of the heat exchange chamber one has less effect on the fabric, thereby improving the quality of the fabric.

[0010] Preferably, the inner cavity of the heat exchange box is provided with a partition in the horizontal direction, and the partition divides the inner cavity of the heat exchange box into heat exchange chamber one and heat exchange chamber two. The heat exchange chamber two is connected to air inlet pipe two and air outlet pipe two, the air inlet pipe two is connected to the external environment, the air outlet pipe two is connected to the insulation box, and the exhaust gas exhaust pipe passes through heat exchange chamber one and heat exchange chamber two.

[0011] By adopting the above technical solution, after designing the heat exchange chamber 2 and the insulation box, the insulation box can store hot air for use in other scenarios.

[0012] Preferably, the partition is an insulating partition, and a connecting pipe connecting heat exchange chamber one and heat exchange chamber two is arranged on the partition, a control valve is arranged on the connecting pipe, and the exhaust gas discharge pipe passes through heat exchange chamber two and heat exchange chamber one in sequence along the exhaust direction.

[0013] By adopting the above technical solution, the partition is designed as a heat-insulating partition. When the fabric needs to be preheated at a low temperature, the control valve is closed, and the gas in the exhaust pipe first passes through the heat exchange chamber 2 for heat exchange, and then passes through the heat exchange chamber 1 to reduce the gas temperature, so that the gas temperature in the heat exchange chamber 1 is reduced, and the fabric in the preheating box is preheated at a low temperature through the air outlet pipe 1; when the fabric needs to be preheated at a high temperature, the control valve is opened, and the gas in the heat exchange chamber 1 can flow into the heat exchange chamber 2, so that the gas temperature in the heat exchange chamber 2 is increased, and the fabric in the preheating box is preheated at a high temperature through the air outlet pipe 1.

[0014] Preferably, the first air outlet pipeline is provided with a first fan and a first air outlet regulating valve, and the second air outlet pipeline is provided with a second fan and a second air outlet regulating valve.

[0015] By adopting the above scheme, after designing the fan 1 and the fan 2, the air flow speed can be increased, and the air outlet regulating valve 1 and the air outlet regulating valve 2 can control the air speed flowing into the preheating box and the insulation box.

[0016] Preferably, the fan 1 includes a fan body, the fan body is arranged on the heat exchange box, a fan shaft is rotatably arranged in the fan body, and blades are fixed to the fan shaft; the conveyor belt assembly includes a conveyor belt body, a roller shaft and a motor, the conveyor belt body is arranged on the frame through the roller shaft, the motor is connected to one of the roller shafts, and a transmission device is arranged between the roller shaft and the fan shaft so that the two can rotate synchronously.

[0017] By adopting the above technical solution, the motor drives the conveyor belt body to move through the roller shaft, and the roller shaft drives the fan shaft to rotate through the transmission device to make the fan one run. The two share a motor. When the conveyor belt body needs to stop, the motor stops running, and the corresponding fan one also stops running to avoid empty blowing.

[0018] Preferably, the transmission device includes bevel gear 1, bevel gear 2, a transmission shaft, pulley 1, a transmission belt and pulley 2, the bevel gears are coaxially fixed on the fan shaft, the transmission shaft is rotatably set on the frame, bevel gear 2 is fixed on the transmission shaft, bevel gear 2 is meshed with bevel gear 1, pulley 2 is coaxially fixed on the transmission shaft and cooperates with pulley 1 through the transmission belt, and the pulleys are coaxially fixed on the roller shaft.

[0019] By adopting the above technical solution, the roller drives the first pulley to rotate, and the transmission shaft is driven to rotate through the transmission belt and the second pulley, so that the second bevel gear rotates, and the fan shaft is driven to rotate through the first bevel gear.

[0020] Preferably, the air inlet pipeline one is provided with an air suction regulating valve one, the air inlet pipeline two is provided with an air suction regulating valve two, and the inner wall of the heat exchange chamber one and the inner wall of the heat exchange chamber two are both provided with a thermal insulation layer.

[0021] By adopting the above technical scheme, the flow of air in the heat exchange chamber 1 and the heat exchange chamber 2 can be controlled by the air suction regulating valve 1, the air suction regulating valve 2, the air outlet regulating valve 1 and the air outlet regulating valve 2. When each regulating valve is closed, the heat exchange box can play the role of an insulation box. When each regulating valve is opened, it can play a normal preheating role. By adjusting the opening of each regulating valve, the preheating temperature and the gas temperature in the insulation box can be adjusted.

[0022] Preferably, the air suction regulating valve 1, air suction regulating valve 2, air outlet regulating valve 1, air outlet regulating valve 2, control valve, motor and fan 2 are all connected to the controller, and the heat exchange chamber 1, heat exchange chamber 2, insulation box and preheating box are all provided with temperature sensors, and the temperature sensors are connected to the controller.

[0023] By adopting the above technical scheme, the temperatures in heat exchange chamber 1, heat exchange chamber 2, insulation box and preheating box can be detected through temperature sensors and controllers, and the temperatures can be adjusted through air suction regulating valve 1, air suction regulating valve 2, air outlet regulating valve 1, air outlet regulating valve 2, control valve, motor and fan 2.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The present application preheats the fabric by hot air coming out of the heat exchange chamber. Compared with exhaust gas, it has less impact on the fabric and improves the quality of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0027] Figure 2 It is a top view of an embodiment of the present application.

[0028] Figure 3 is along Figure 2 Cross-sectional view along line AA.

[0029] Figure 4 yes Figure 1 Enlarged view of part A.

[0030] Explanation of the reference numerals: 1. frame; 2. shaping machine body; 3. preheating box; 4. conveyor belt assembly; 41. conveyor belt body; 42. roller; 5. heat exchange box; 51. heat exchange chamber 1; 52. air inlet pipeline 1; 521. air suction regulating valve 1; 53. air outlet pipeline 1; 531. fan 1; 5311. fan body; 5312. fan shaft; 532. air outlet regulating valve 1; 54. partition; 55. heat exchange chamber 2; 56. air inlet pipeline 2; 561. air suction regulating valve 2; 57. air outlet pipeline 2; 571. fan 2; 572. air outlet regulating valve 2; 6. exhaust pipe; 7. insulation box; 8. transmission device; 81. bevel gear 1; 82. bevel gear 2; 83. transmission shaft; 84. pulley 1; 85. transmission belt; 86. pulley 2; 9. control valve. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] like Figure 1 , Figure 2 As shown, the exhaust gas waste heat recovery device includes a frame 1, a shaping machine body 2, a preheating box 3, and a conveyor belt assembly 4. The conveyor belt assembly 4 and the preheating box 3 are both arranged on the frame 1, and the conveyor belt assembly 4 passes through the preheating box 3 and the shaping machine body 2.

[0033] In this embodiment, the frame 1 is in an elongated shape, and the conveyor belt assembly 4 includes a conveyor belt body 41, a roller shaft 42 and a motor. The conveyor belt body 41 is arranged along the length direction of the frame 1 and is arranged on the frame 1 through the roller shaft 42. The motor is connected to one of the roller shafts 42.

[0034] A conveyor belt body 41 may be provided in each of the setting machine body 2 and the preheating box 3, or a conveyor belt body 41 may be shared.

[0035] like Figure 1 , Figure 3 As shown, the waste heat recovery device also includes a heat exchange box 5 and an exhaust gas discharge pipe 6. The heat exchange box 5 is provided with a heat exchange chamber 51. One end of the exhaust gas discharge pipe 6 is connected to the inner cavity of the molding machine body 2. The other end of the exhaust gas discharge pipe 6 passes through the heat exchange chamber 51 and extends to the outside of the heat exchange box 5. The heat exchange chamber 51 is connected to an air inlet pipeline 52 and an air outlet pipeline 53. The air inlet pipeline 52 is connected to the external environment, and the air outlet pipeline 53 is connected to the preheating box 3.

[0036] Preferably, an air suction regulating valve 521 is provided on the air inlet pipeline 52, a filter is provided at the air inlet end of the air inlet pipeline 52, a fan 531 and an air outlet regulating valve 532 are provided on the air outlet pipeline 53, and an insulation layer is provided on the inner surface of the heat exchange chamber 51, and the insulation layer can be made of asbestos or the like.

[0037] like Figure 1 , Figure 3 As shown, the inner cavity of the heat exchange box 5 is provided with a partition 54 in the horizontal direction, and the partition 54 divides the inner cavity of the heat exchange box 5 into a heat exchange chamber 1 51 and a heat exchange chamber 2 55. The heat exchange chamber 2 55 is connected to an air inlet pipe 2 56 and an air outlet pipe 2 57. The air inlet pipe 2 56 is connected to the external environment, and the air outlet pipe 2 57 is connected to the insulation box 7. The exhaust gas discharge pipe 6 passes through the heat exchange chamber 2 55 and the heat exchange chamber 1 51 in sequence along the exhaust direction. The exhaust gas discharge pipe 6 can be additionally provided with a purification device, such as a spray washing device, to further purify the exhaust gas discharged into the air and reduce the impact on the external environment.

[0038] Preferably, the air inlet pipe 56 is provided with an air suction regulating valve 561, the air inlet end of the air inlet pipe 56 is provided with a filter, the air outlet pipe 57 is provided with a fan 571 and an air outlet regulating valve 572, and the inner wall of the heat exchange chamber 55 is provided with an insulation layer, which may also be made of asbestos.

[0039] Preferably, the partition 54 is a heat insulating partition 54, which may be made of asbestos board, glass wool board or the like.

[0040] A connecting pipeline connecting the heat exchange chamber 1 51 and the heat exchange chamber 2 55 is arranged on the partition plate 54 , and a control valve 9 is arranged on the connecting pipeline.

[0041] As another solution, when the partition 54 does not have a heat insulation function, the fabric can also be preheated and the hot air in the heat preservation box 7 can be stored, but the temperature cannot be adjusted.

[0042] like Figure 1 , Figure 3 , Figure 4 As shown, the fan 1 531 includes a fan body 5311, which is arranged on the heat exchange box 5, and a fan shaft 5312 is rotatably arranged in the fan body 5311, and a blade is fixed to the fan shaft 5312; a transmission device 8 is arranged between the roller shaft 42 and the fan shaft 5312 to enable the two to rotate synchronously. The fan 2 571 is driven by a self-contained motor.

[0043] In this embodiment, the transmission device 8 includes a bevel gear 1 81, a bevel gear 2 82, a transmission shaft 83, a pulley 1 84, a transmission belt 85 and a pulley 2 86. The bevel gear 1 81 is coaxially fixed on the fan shaft 5312. The transmission shaft 83 is rotatably arranged on the frame 1. The bevel gear 2 82 is fixed on the transmission shaft 83. The bevel gear 2 82 meshes with the bevel gear 1 81, and the bevel gear 1 81 plays a role of speed increase relative to the bevel gear 2 82 to meet the requirements of slow fabric conveying and high-speed rotation of the fan shaft 5312. The pulley 2 86 is coaxially fixed on the transmission shaft 83 and cooperates with the pulley 1 84 through the transmission belt 85. The pulley 1 84 is coaxially fixed on the roller shaft 42.

[0044] As another solution, the transmission device 8 can also be designed as a combination of gears.

[0045] like Figure 1 , Figure 3 , Figure 4 As shown, the air suction regulating valve 1 521, the air suction regulating valve 2 561, the air outlet regulating valve 1 532, the air outlet regulating valve 2 572, the control valve 9, the motor and the fan 2 571 are all connected to the controller, and the heat exchange chamber 1 51, the heat exchange chamber 2 55, the insulation box 7, and the preheating box 3 are all provided with temperature sensors, and the temperature sensors are connected to the controller.

[0046] The working principle of this embodiment is as follows: the motor drives the conveyor belt body 41 to move through the roller shaft 42, and the roller shaft 42 drives the fan shaft 5312 to rotate through the transmission device 8, so that the fan 531 is running, and the fresh air entering the heat exchange chamber 51 from the air inlet pipe 52 can exchange heat with the exhaust gas discharge pipe 6;

[0047] When the fabric needs to be preheated at low temperature, the control valve 9 is closed, and the gas from the exhaust pipe first passes through the heat exchange chamber 2 55 for heat exchange, and then passes through the heat exchange chamber 1 51 to reduce the temperature of the gas, so that the temperature of the gas in the heat exchange chamber 1 51 is reduced, and the fabric in the preheating box 3 is preheated at low temperature through the air outlet pipe 1 53;

[0048] When the fabric needs to be preheated at high temperature, the control valve 9 is opened, and the gas in the heat exchange chamber 1 51 can flow into the heat exchange chamber 2 55, so that the temperature of the gas in the heat exchange chamber 2 55 increases, and the fabric in the preheating box 3 is preheated at high temperature through the air outlet pipe 1 53.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A waste heat recovery device for high-temperature exhaust gas from a printing and dyeing setting machine, characterized in that: The waste heat recovery device comprises a frame (1), a shaping machine body (2), a preheating box (3), and a conveyor belt assembly (4); the conveyor belt assembly (4) and the preheating box (3) are both arranged on the frame (1); the conveyor belt assembly (4) passes through the preheating box (3) and the shaping machine body (2); the waste heat recovery device further comprises a heat exchange box (5) and an exhaust gas discharge pipe (6); the heat exchange box (5) is provided with a heat exchange chamber (51); one end of the exhaust gas discharge pipe (6) is communicated with the inner cavity of the shaping machine body (2); the other end of the exhaust gas discharge pipe (6) passes through the heat exchange chamber (51) and extends to the outside of the heat exchange box (5); the heat exchange chamber (51) is connected with an air inlet pipeline (52) and an air outlet pipeline (53); the air inlet pipeline (52) is communicated with the external environment; and the air outlet pipeline (53) is connected to the preheating box (3).

2. The device for recovering waste heat from high-temperature exhaust gas of a printing and dyeing setting machine according to claim 1 is characterized in that: The inner cavity of the heat exchange box (5) is provided with a partition (54) in the horizontal direction, and the partition (54) divides the inner cavity of the heat exchange box (5) into a heat exchange chamber 1 (51) and a heat exchange chamber 2 (55). The heat exchange chamber 2 (55) is connected to an air inlet pipeline 2 (56) and an air outlet pipeline 2 (57). The air inlet pipeline 2 (56) is in communication with the external environment, and the air outlet pipeline 2 (57) is connected to an insulation box (7). The exhaust gas discharge pipe (6) passes through the heat exchange chamber 1 (51) and the heat exchange chamber 2 (55).

3. The device for recovering waste heat from high-temperature exhaust gas of a printing and dyeing setting machine according to claim 2 is characterized in that: The partition (54) is a heat-insulating partition. A connecting pipeline connecting the first heat exchange chamber (51) and the second heat exchange chamber (55) is provided on the partition (54). A control valve (9) is provided on the connecting pipeline. The exhaust gas discharge pipe (6) passes through the second heat exchange chamber (55) and the first heat exchange chamber (51) in sequence along the exhaust direction.

4. The device for recovering waste heat from high-temperature exhaust gas of a printing and dyeing setting machine according to claim 3 is characterized in that: The first air outlet pipeline (53) is provided with a fan (531) and a first air outlet regulating valve (532), and the second air outlet pipeline (57) is provided with a fan (571) and a second air outlet regulating valve (572).

5. The device for recovering waste heat from high-temperature exhaust gas of a printing and dyeing setting machine according to claim 4 is characterized in that: The fan 1 (531) comprises a fan body (5311), the fan body (5311) being arranged on the heat exchange box (5), a fan shaft (5312) being rotatably arranged inside the fan body (5311), and blades being fixed to the fan shaft (5312); the conveyor belt assembly (4) comprises a conveyor belt body (41), a roller shaft (42) and a motor, the conveyor belt body (41) being arranged on the frame (1) via the roller shaft (42), the motor being connected to one of the roller shafts (42), and a transmission device (8) being arranged between the roller shaft (42) and the fan shaft (5312) so as to enable the two to rotate synchronously.

6. The device for recovering waste heat from high-temperature exhaust gas of a printing and dyeing setting machine according to claim 5 is characterized in that: The transmission device (8) comprises a bevel gear 1 (81), a bevel gear 2 (82), a transmission shaft (83), a pulley 1 (84), a transmission belt (85) and a pulley 2 (86); the bevel gear 1 (81) is coaxially fixed to the fan shaft (5312); the transmission shaft (83) is rotatably arranged on the frame (1); the bevel gear 2 (82) is fixed to the transmission shaft (83); the bevel gear 2 (82) meshes with the bevel gear 1 (81); the pulley 2 (86) is coaxially fixed to the transmission shaft (83) and cooperates with the pulley 1 (84) via the transmission belt (85); and the pulley 1 (84) is coaxially fixed to the roller shaft (42).

7. The device for recovering waste heat from high-temperature exhaust gas of a printing and dyeing setting machine according to claim 6, characterized in that: The first air inlet pipeline (52) is provided with a first air suction regulating valve (521), the second air inlet pipeline (56) is provided with a second air suction regulating valve (561), and the inner wall of the first heat exchange chamber (51) and the inner wall of the second heat exchange chamber (55) are both provided with a thermal insulation layer.

8. The device for recovering waste heat from high-temperature exhaust gas of a printing and dyeing setting machine according to claim 7, characterized in that: The air suction regulating valve 1 (521), the air suction regulating valve 2 (561), the air outlet regulating valve 1 (532), the air outlet regulating valve 2 (572), the control valve (9), the motor and the fan 2 (571) are all connected to the controller, and the heat exchange chamber 1 (51), the heat exchange chamber 2 (55), the insulation box (7) and the preheating box (3) are all provided with temperature sensors, and the temperature sensors are connected to the controller.

Images