Waste heat recovery device of setting machine

Abstract

The utility model belongs to the technical field of textile setting, and particularly relates to a waste heat recovery device of a setting machine, which comprises a heat exchanger, a smoke inlet of the heat exchanger is communicated with an inner cavity of the setting machine, a fresh air outlet of the heat exchanger is connected with two branches, one branch is communicated with the inner cavity of the setting machine, and the other branch is communicated with a fresh air inlet of a burner. Smoke of the heat exchanger is driven by the first fan to flow out through a smoke outlet of the heat exchanger, and fresh air of the heat exchanger is driven by the second fan to flow in through a fresh air inlet of the heat exchanger. Flue gas exhausted by the setting machine is fully utilized, waste heat is recycled, energy waste is little, and energy consumption is low.

Description

Technical field:

[0001] The utility model belongs to the technical field of textile shaping, in particular to a waste heat recovery device of a shaping machine. Background technology:

[0002] The textile industry is a major energy consumer, of which the printing and dyeing industry accounts for about 58.7% of the total energy consumption of the entire textile industry, and the stentering and shaping process accounts for 40% of the total energy consumption of the printing and dyeing process. Only 29% of the heat energy consumed by shaping is actually absorbed by fabrics and cloth, and about 10% is lost to the heat of the machine body. The rest of the heat energy (more than 60%) is lost to the atmosphere with the exhaust gas, resulting in a large amount of energy waste and high energy consumption. Summary of the invention:

[0003] The utility model aims to provide a waste heat recovery device for a setting machine, which fully utilizes the smoke exhausted by the setting machine to recover waste heat, with less energy waste and low energy consumption.

[0004] The utility model is achieved in this way:

[0005] A waste heat recovery device for a setting machine comprises a heat exchanger, wherein a smoke inlet of the heat exchanger is connected to an inner cavity of the setting machine, and a fresh air outlet of the heat exchanger is connected to two branches, one branch is connected to the inner cavity of the setting machine, and the other branch is connected to a fresh air inlet of a burner. The smoke of the heat exchanger is driven by a first fan to flow out through the smoke outlet of the heat exchanger, and the fresh air of the heat exchanger is driven by a second fan to flow in through the fresh air inlet of the heat exchanger.

[0006] In the above-mentioned waste heat recovery device of a stenting machine, the fresh air outlet of the heat exchanger is connected to the fresh air main pipe, and the fresh air main pipe is connected to fresh air branch pipe 1 and fresh air branch pipe 2. One branch is fresh air branch pipe 1 connected to the inner cavity of the stenting machine, and the other branch is fresh air branch pipe 2 connected to the fresh air inlet of the burner.

[0007] In the above-mentioned waste heat recovery device of a setting machine, the setting machine includes a plurality of machine bodies with interconnected inner cavities, each machine body is provided with a burner, and the second fresh air branch pipe is connected to the fresh air inlet of each burner.

[0008] In the above-mentioned waste heat recovery device of a setting machine, the second fresh air branch pipe is connected to the branch main pipe, the branch main pipe is connected to the fresh air inlet of each burner through the corresponding branch pipes, and a cold air valve is provided on the branch main pipe.

[0009] In the above-mentioned waste heat recovery device of a stenting machine, when a stenting machine and a waste heat recovery device are provided in one group, a fresh air branch pipe 1 is connected to the body cavity at both ends; when a stenting machine and a waste heat recovery device are provided in two groups, and the right end of one stenting machine is connected to the left end of another stenting machine, a fresh air branch pipe 1 of the waste heat recovery device on the left side is connected to the body cavity at the left end of the stenting machine on the left side, and a fresh air branch pipe 1 of the waste heat recovery device on the right side is connected to the body cavity at the right end of the stenting machine on the right side.

[0010] In the above-mentioned waste heat recovery device of a setting machine, the smoke outlets of each machine body are connected to the smoke main pipe through corresponding smoke branch pipes, and the smoke main pipe is connected to the smoke inlet of the heat exchanger.

[0011] In the above-mentioned waste heat recovery device of a stenting machine, a pressure sensor is provided on the fresh air main pipe, fresh air branch pipe one or fresh air branch pipe two, and a pressure-stabilizing butterfly valve is provided on the fresh air main pipe, fresh air branch pipe one or fresh air branch pipe two.

[0012] In the above-mentioned waste heat recovery device of a setting machine, a temperature sensor is provided on the fresh air main pipe, the fresh air branch pipe 1 or the fresh air branch pipe 2.

[0013] In the above-mentioned waste heat recovery device of a setting machine, a controller is also included, and the fan 1, fan 2, burner, cold air valve, pressure sensor, pressure-stabilizing butterfly valve, and temperature sensor are electrically connected to the controller respectively.

[0014] In the above-mentioned waste heat recovery device of a setting machine, the setting positions of fan 1 and fan 2 can be: fan 1 is connected to the flue gas outlet of the heat exchanger, and fan 2 is connected to the fresh air inlet of the heat exchanger.

[0015] In the above-mentioned waste heat recovery device of a setting machine, the setting positions of fan 1 and fan 2 can also be: fan 1 is set on the flue gas main pipe, and fan 2 is set on the fresh air main pipe.

[0016] The outstanding advantages of the utility model compared with the prior art are:

[0017] 1. The utility model makes full use of the flue gas discharged from the setting machine through the heat exchanger to recover the waste heat. A part of the heated fresh air flows into the inner cavity of the setting machine, so that the flue gas with a lower temperature can be used to achieve the same drying effect, effectively saving energy; another part of the heated fresh air flows into the burner, so that less fuel can be used to achieve the same heat energy, further saving energy; the utility model has low energy consumption;

[0018] 2. The utility model is provided with a cold air valve on the branch main pipe. When the second fan fails to work, the cold air valve is opened, and the burner can work normally with normal temperature cold air, effectively ensuring the operation of the burner;

[0019] 3. The utility model is equipped with a pressure sensor and a pressure-stabilizing butterfly valve to effectively ensure the total amount of fresh air and the stability of the pressure of the burner;

[0020] 4. The utility model is provided with a temperature sensor and adjusts the air door size of the burner to effectively ensure the combustion state of the burner. Description of the drawings:

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure numerals: 1. heat exchanger; 2. shaping machine; 3. burner; 4. fan 1; 5. fan 2; 6. fresh air main pipe; 7. fresh air branch pipe 1; 8. fresh air branch pipe 2; 9. branch main pipe; 10. branch branch pipe; 11. cold air valve; 12. flue gas branch pipe; 13. flue gas main pipe; 14. pressure sensor; 15. pressure-stabilizing butterfly valve; 16. temperature sensor. Specific implementation method:

[0023] The present invention is further described below with reference to specific embodiments. Figure 1 :

[0024] A waste heat recovery device for a setting machine comprises a heat exchanger 1, wherein the smoke inlet of the heat exchanger 1 is connected to the inner cavity of the setting machine 2, and the fresh air outlet of the heat exchanger 1 is connected to two branches, one branch is connected to the inner cavity of the setting machine 2, and the other branch is connected to the fresh air inlet of the burner 3. The smoke of the heat exchanger 1 is driven by a fan 4 to flow out through the smoke outlet of the heat exchanger 1, and the fresh air of the heat exchanger 1 is driven by a fan 5 to flow into the fresh air inlet of the heat exchanger 1.

[0025] Figure 1 In the figure, the arrows indicate the direction of gas flow.

[0026] The working principle of the utility model is as follows: Figure 1 As shown, after the setting machine 2 receives the heat load demand, all equipment starts to run, the burner 3 starts to work, part of the heat energy generated by the burner 3 is absorbed by the cloth, and the other part is driven by the smoke through the fan 1 4 to flow into the heat exchanger 1 through the smoke inlet of the heat exchanger 1, and flows out through the smoke outlet of the heat exchanger 1 after heat exchange with the fresh air in the heat exchanger 1; the fresh air is driven by the fan 2 5 to flow into the heat exchanger 1 through the fresh air inlet of the heat exchanger 1, and becomes hot air after heat exchange with the smoke in the heat exchanger 1. The hot air flows out through the fresh air outlet of the heat exchanger 1 and is divided into two branches. One part of the fresh air flows into the inner cavity of the setting machine 2 and is mixed with the smoke generated by the burner 3 and the cold air drawn in by the cold air fan to dry the cloth, and the other part of the fresh air flows into the burner 3 and is mixed with the inflowing gas for combustion.

[0027] The utility model makes full use of the flue gas exhausted by the setting machine 2 through the heat exchanger 1 to recover the waste heat. A part of the heated fresh air flows into the inner cavity of the setting machine 2, so that the flue gas with a lower temperature can be used to achieve the same drying effect, effectively saving energy; another part of the heated fresh air flows into the burner 3, so that less fuel can be used to achieve the same thermal energy, further saving energy; the utility model has low energy consumption, and the comprehensive energy consumption is reduced by about 25%.

[0028] The specific structure of the two branches of the fresh air outlet of the heat exchanger 1 is as follows: Figure 1 As shown, the fresh air outlet of the heat exchanger 1 is connected to the fresh air main pipe 6, and the fresh air main pipe 6 is connected to a fresh air branch pipe 1 7 and a fresh air branch pipe 2 8. One branch is a fresh air branch pipe 1 7 connected to the inner cavity of the shaping machine 2, and the other branch is a fresh air branch pipe 2 8 connected to the fresh air inlet of the burner 3.

[0029] Furthermore, the shaping machine 2 includes a plurality of bodies with interconnected inner cavities, each of which is provided with a burner 3 , and the fresh air branch pipe 2 8 is connected to the fresh air inlet of each burner 3 .

[0030] In order to ensure that the burner 3 can work normally when the fan 2 5 fails to work, the fresh air branch pipe 2 8 is connected to the branch main pipe 9, and the branch main pipe 9 is connected to the fresh air inlet of each burner 3 through the corresponding branch pipe 10. The branch main pipe 9 is provided with a cold air valve 11. When the cold air valve 11 is opened, the burner 3 can work normally using normal temperature cold air.

[0031] In actual use, the heat preservation effect at both ends of the setting machine 2 is usually the worst, and the energy consumption of the burner 3 is the highest.

[0032] In order to rationally utilize the heated fresh air, when the molding machine 2 and the waste heat recovery device are provided in one group, the fresh air branch pipe 7 is connected to the body cavity at both ends; when the molding machine 2 and the waste heat recovery device are provided in two groups, and the right end of one molding machine 2 is connected to the left end of the other molding machine 2, the fresh air branch pipe 7 of the waste heat recovery device on the left side is connected to the body cavity of the left end of the molding machine 2 on the left side, and the fresh air branch pipe 7 of the waste heat recovery device on the right side is connected to the body cavity of the right end of the molding machine 2 on the right side.

[0033] The specific connection structure between the smoke inlet of the heat exchanger 1 and the inner cavity of the setting machine 2 is as follows: the smoke outlets of each machine body are connected to the smoke main pipe 13 through the corresponding smoke branch pipes 12, and the smoke main pipe 13 is connected to the smoke inlet of the heat exchanger 1.

[0034] Because the fresh air is circulated in the fresh air main pipe 6, the fresh air branch pipe 1 7, and the fresh air branch pipe 2 8, the pressure and temperature in the fresh air main pipe 6, the fresh air branch pipe 1 7, and the fresh air branch pipe 2 8 are the same.

[0035] In order to ensure the stability of the total amount and pressure of the fresh air entering the burner 3, a pressure sensor 14 is provided on the fresh air main pipe 6, the fresh air branch pipe 1 7 or the fresh air branch pipe 2 8, and a pressure stabilizing butterfly valve 15 is provided on the fresh air main pipe 6, the fresh air branch pipe 1 7 or the fresh air branch pipe 2 8. In this embodiment, the pressure sensor 14 is arranged on the fresh air branch pipe 2 8, and the pressure stabilizing butterfly valve 15 is arranged on the fresh air branch pipe 1 7. When the total load changes, when the flue gas temperature and the total amount change, the total amount of fresh air after heat exchange will also change. The pressure sensor will receive the change signal, and adjust the pressure stabilizing butterfly valve 15 according to the signal to ensure the stability of the total amount and pressure of the fresh air entering the burner 3.

[0036] The higher the fresh air temperature, the less oxygen per unit volume; the lower the fresh air temperature, the more oxygen per unit volume.

[0037] In order to ensure the combustion state of the burner 3, a temperature sensor 16 is provided on the fresh air main pipe 6, the fresh air branch pipe 1 7 or the fresh air branch pipe 2 8. In this embodiment, the temperature sensor 16 is provided on the fresh air branch pipe 2 8. When the fresh air temperature changes (the oxygen content per unit volume changes), the damper of the burner 3 is fine-tuned to ensure the combustion state.

[0038] In order to realize intelligent control, a controller is also included, and the fan 1 4, fan 2 5, burner 3, cold air valve 11, pressure sensor 14, pressure-stabilizing butterfly valve 15, and temperature sensor 16 are electrically connected to the controller respectively.

[0039] The setting positions of fan 1 4 and fan 2 5 are as follows: fan 1 4 is connected to the smoke outlet of the heat exchanger 1 , and fan 2 5 is connected to the fresh air inlet of the heat exchanger 1 .

[0040] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A waste heat recovery device for a setting machine, characterized in that: The invention comprises a heat exchanger (1), wherein the smoke inlet of the heat exchanger (1) is connected to the inner cavity of the setting machine (2), and the fresh air outlet of the heat exchanger (1) is connected to two branches, one branch is connected to the inner cavity of the setting machine (2), and the other branch is connected to the fresh air inlet of the burner (3). The smoke of the heat exchanger (1) is driven by a first fan (4) to flow out through the smoke outlet of the heat exchanger (1), and the fresh air of the heat exchanger (1) is driven by a second fan (5) to flow into the fresh air inlet of the heat exchanger (1).

2. The waste heat recovery device of a setting machine according to claim 1, characterized in that: The fresh air outlet of the heat exchanger (1) is connected to a fresh air main pipe (6), and a fresh air branch pipe 1 (7) and a fresh air branch pipe 2 (8) are connected to the fresh air main pipe (6), one branch is the fresh air branch pipe 1 (7) connected to the inner cavity of the setting machine (2), and the other branch is the fresh air branch pipe 2 (8) connected to the fresh air inlet of the burner (3).

3. The waste heat recovery device of a setting machine according to claim 2, characterized in that: The shaping machine (2) comprises a plurality of machine bodies with interconnected inner cavities, each of which is provided with a burner (3), and the second fresh air branch pipe (8) is connected to the fresh air inlet of each burner (3).

4. The waste heat recovery device of a setting machine according to claim 3, characterized in that: The second fresh air branch pipe (8) is connected to the branch main pipe (9), and the branch main pipe (9) is connected to the fresh air inlet of each burner (3) through a corresponding branch branch pipe (10), and a cold air valve (11) is provided on the branch main pipe (9).

5. The waste heat recovery device of a setting machine according to claim 3, characterized in that: When the setting machine (2) and the waste heat recovery device are provided in one group, the fresh air branch pipe 1 (7) is connected to the inner cavity of the machine body at both ends; when the setting machine (2) and the waste heat recovery device are provided in two groups, and the right end of one setting machine (2) is connected to the left end of the other setting machine (2), the fresh air branch pipe 1 (7) of the waste heat recovery device located on the left side is connected to the inner cavity of the machine body at the left end of the setting machine (2) located on the left side, and the fresh air branch pipe 1 (7) of the waste heat recovery device located on the right side is connected to the inner cavity of the machine body at the right end of the setting machine (2) located on the right side.

6. The waste heat recovery device of a setting machine according to claim 3, characterized in that: The smoke outlets of each machine body are connected to a smoke main pipe (13) via corresponding smoke branch pipes (12), and the smoke main pipe (13) is connected to a smoke inlet of the heat exchanger (1).

7. The waste heat recovery device of a setting machine according to claim 2, characterized in that: A pressure sensor (14) is provided on the fresh air main pipe (6), the fresh air branch pipe one (7) or the fresh air branch pipe two (8), and a pressure-stabilizing butterfly valve (15) is provided on the fresh air main pipe (6), the fresh air branch pipe one (7) or the fresh air branch pipe two (8).

8. The waste heat recovery device of a setting machine according to claim 2, characterized in that: A temperature sensor (16) is provided on the fresh air main pipe (6), the fresh air branch pipe one (7) or the fresh air branch pipe two (8).

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