Waste heat recovery device of setting machine

Abstract

The utility model discloses a waste heat recovery device of a setting machine, which relates to the technical field of waste heat recovery, comprises a box body, and is characterized in that three cavities are arranged in the box body and comprise a first cavity, a second cavity and a third cavity, the first cavity is provided with a setting machine waste gas inlet, the second cavity is arranged above the first cavity, and the third cavity is arranged above the second cavity. The third cavity is installed on one side of the first cavity, the heat exchanger is arranged in the third cavity, the heat exchanger is provided with a waste gas inlet, a waste gas outlet, a fresh air inlet and a fresh air outlet, the waste gas inlet is formed in one side of the waste gas inlet of the setting machine of the first cavity, and the waste gas outlet is opposite to the waste gas inlet; the fresh air inlet is formed in one side of the fresh air inlet, and the fresh air outlet is opposite to the fresh air inlet. By adopting the unique cavity design and the air duct arrangement of the heat exchanger, waste gas and fresh air of the setting machine can be fully subjected to heat exchange, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery device for a stenter. Background Art

[0002] The heat setting process is an important process in the printing and dyeing industry. The stenter is the main equipment for the heat setting process. The stenter is huge in volume. In the heat setting process, a large amount of heat energy is consumed. According to statistics, in the total emissions of printing and dyeing waste gas, the waste gas emissions from the heat setting process account for more than 1 / 2 of the total. In addition, a large amount of heat energy is consumed in the heat setting process, and most of it is discharged with the waste gas. The discharge temperature of the stenter waste gas can reach 100-190°C. Therefore, how to recycle and utilize the stenter waste gas is an important part of realizing energy conservation and consumption reduction and green printing and dyeing.

[0003] Currently, the waste heat recovery device of the stenter is mainly realized through a heat exchanger (also known as a heat exchanger). However, since the stenter oil fume waste gas is a gaseous fluid containing solid, liquid, and gas three-phase substances, specifically, the oil agent and fiber contained in the stenter often cause the heat exchanger to be blocked, and even the waste oil produced will flow back into the stenter, posing a safety hazard. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a waste heat recovery device for a stenter that is convenient for installation and maintenance and can effectively handle waste oil and fiber.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A waste heat recovery device for a stenter includes a box body, characterized in that: three cavities are arranged in the box body, including a first cavity, a second cavity, and a third cavity. A stenter waste gas inlet is arranged in the first cavity. The second cavity is arranged above the first cavity. A fresh air inlet is arranged in the second cavity. A fan is installed in the second cavity for pressurizing the fresh air. The third cavity is installed on one side of the first cavity. A filter screen is arranged between the third cavity and the first cavity. One end of the third cavity is provided with a stenter waste gas discharge port, and the other end of the third cavity is provided with a fresh air discharge port; a heat exchanger is arranged in the third cavity. The heat exchanger has an exhaust gas inlet, an exhaust gas outlet, a fresh air inlet, and a fresh air outlet. Among them, the exhaust gas inlet is arranged on the side of the stenter waste gas inlet in the first cavity, and the exhaust gas outlet is arranged opposite to the exhaust gas inlet; the fresh air inlet is arranged on one side of the fresh air inlet, and the fresh air outlet is arranged opposite to the fresh air inlet.

[0007] Further settings are as follows:

[0008] The box body is made of heat-insulating material.

[0009] The setting inlet of the setting machine waste gas is arranged at the lower left end of the box body, the fresh air inlet is arranged at the upper left end of the box body, the setting machine waste gas discharge outlet is arranged at the upper right end of the box body, and the fresh air discharge outlet is arranged at the lower right end of the box body.

[0010] The second cavity is separated from the first cavity by a cold and hot air isolation plate.

[0011] An air duct is arranged inside the heat exchanger. The waste gas channel is composed of the waste gas inlet, the air duct, and the waste gas outlet, and the fresh air channel is composed of the fresh air inlet, the air duct, and the fresh air outlet. The waste gas and the fresh air form an intersection inside the heat exchanger to complete the heat exchange.

[0012] A brush mechanism is also arranged inside the first cavity. The brush mechanism includes a brush. The brush is arranged on one side of the filter screen, installed on the chain, and driven by a motor to move reciprocally. The brush is used to clean the fiber fine hairs accumulated on the filter screen.

[0013] For the described heat exchanger, its four corners are installed inside the first cavity through double angle iron rails. The double angle iron rails form an "L" - shaped rail, which fits with the four corners of the heat exchanger. During installation, the heat exchanger is embedded into the double angle iron rails at the four corners to complete the installation and fixation of the heat exchanger.

[0014] Tightening screws and sealing strips are arranged around the heat exchanger to clamp the heat exchanger.

[0015] The heat exchanger is obliquely arranged inside the box body. An oil - receiving tray is arranged at the bottom end where the heat exchanger is obliquely arranged.

[0016] A first heat - insulating movable door is installed at the first cavity and the second cavity, and a second heat - insulating movable door is installed at the third cavity.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. The unique chamber design and the air duct setting of the heat exchanger enable the waste gas and fresh air of the setting machine to fully exchange heat, improving the heat exchange efficiency.

[0019] 2. The four corners of the heat exchanger are all installed using double angle iron rails, which facilitates the installation, disassembly, and cleaning of the heat exchanger.

[0020] 3. The unique filter screen and oil - receiving tray design collect the waste oil and fibers contained in the waste gas of the setting machine, preventing blockage caused by long - term accumulation.

[0021] The following further explains the present invention in conjunction with the attached drawings and specific implementation manners. Description of the Drawings

[0022] Figure 1This is the overall structural schematic diagram of the present utility model.

[0023] Figure 2 This is the structural schematic diagram of the heat exchanger of the present utility model.

[0024] Figure 3 This is the structural schematic diagram after installing the heat preservation movable door of the present utility model. Specific embodiments

[0025] Refer to Figure 1 , a waste heat recovery device for a stenter, comprising a box body 1, and the box body 1 is preferably made of heat preservation materials.

[0026] There are three cavities arranged in the box body 1, including a first cavity 11, a second cavity 12, and a third cavity 13. A stenter waste gas inlet 10 is arranged in the first cavity 11. The second cavity 12 is arranged above the first cavity 11, and the second cavity 12 and the first cavity 11 are separated by a cold and hot air isolation plate 4. A fresh air inlet 14 is arranged in the second cavity 12. A fan 3 is installed in the second cavity 12 for pressurizing the fresh air. The third cavity 13 is installed on one side of the first cavity 11. A filter screen 5 is arranged between the third cavity 13 and the first cavity 11. One end of the third cavity 13 is provided with a stenter waste gas discharge port 15, and the other end of the third cavity 13 is provided with a fresh air discharge port 16.

[0027] In order to improve air convection and strengthen heat exchange, preferably, the stenter waste gas inlet 10 is arranged at the lower left end of the box body 1, the fresh air inlet 14 is arranged at the upper left end of the box body 1, the stenter waste gas discharge port 15 is arranged at the upper right end of the box body 1, and the fresh air discharge port 16 is arranged at the lower right end of the box body 1.

[0028] Combined with Figure 2 as shown, a heat exchanger 2 is arranged in the third cavity 13. The heat exchanger 2 has an exhaust gas inlet 21, an exhaust gas outlet 23, a fresh air inlet 22, and a fresh air outlet 24. Among them, the exhaust gas inlet 21 is arranged on one side of the stenter waste gas inlet 10 of the first cavity 11, and the exhaust gas outlet 23 is arranged opposite to the exhaust gas inlet 21; the fresh air inlet 22 is arranged on one side of the fresh air inlet 14, and the fresh air outlet 24 is arranged opposite to the fresh air inlet 22. An air duct is arranged inside the heat exchanger 2, and the exhaust gas and the fresh air form an intersection at the air duct inside the heat exchanger 2 to complete heat exchange.

[0029] A brush mechanism is also arranged in the first cavity 11. The brush mechanism includes a brush 6. The brush 6 is arranged on one side of the filter screen 5. The brush 6 is installed on a chain 7 and is driven by a motor 8 to move reciprocally. The brush 6 is used to clean the fiber fine hairs accumulated on the filter screen 5.

[0030] The heat exchanger 2 of the present utility model is installed in the first cavity 11 through double angle iron rails 20 at its four corners. Specifically, the double angle iron rails 20 form an "L" - shaped rail, which fits with the four corners of the heat exchanger 2. During installation, the heat exchanger 2 is embedded into the double angle iron rails 20 at the four corners, and thus the installation and fixation of the heat exchanger 2 can be completed. When disassembly and cleaning are required, it can also be conveniently taken out from the rails, and the single - machine disassembly time does not exceed 1 minute.

[0031] To prevent the heat exchanger 2 from deforming at high temperatures, fastening screws 26 and sealing strips 27 are arranged around the heat exchanger 2 of the present utility model to clamp the heat exchanger 2 and prevent it from deforming at high temperatures.

[0032] As a preferred setting, the heat exchanger 2 is obliquely arranged in the box body 1. At the bottom end where the heat exchanger 2 is obliquely arranged, an oil - receiving tray 9 is also provided. The oil - receiving tray 9 is used to collect the waste oil generated by the heat exchanger 2 due to cooling.

[0033] As Figure 3 shown, a first heat - insulating movable door 17 is installed at the first chamber 11 and the second chamber 12. A second heat - insulating movable door 18 is installed at the third chamber 13. The design of the heat - insulating movable door is mainly to facilitate opening for cleaning the internal hygiene (waste oil, fiber fine hairs, etc.).

[0034] The working process of the present utility model is as follows:

[0035] The waste gas of the setting machine enters from the waste gas inlet 10 of the setting machine. First, it is filtered by the filter screen 5, and then enters the heat exchanger 2 through the waste gas inlet 21 of the heat exchanger 2. The fresh air enters from the fresh air inlet 14 and is sent into the fresh air inlet 22 of the heat exchanger 2 by the fan 3. The fresh air and the waste gas complete heat exchange in the air duct of the heat exchanger 2. The waste gas after heat exchange is discharged successively through the waste gas outlet 23 of the heat exchanger 2 and the waste gas discharge outlet 15 of the setting machine. The fresh air after heat exchange is discharged successively through the fresh air outlet 24 of the heat exchanger 2 and the fresh air discharge outlet 16.

[0036] The above - mentioned is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent replacements or changes, should be covered within the protection scope of the present utility model.

Claims

1. A waste heat recovery device for a setting machine, comprising a box, characterized in that: Three cavities are arranged in the box, including a first cavity, a second cavity and a third cavity. The first cavity is provided with an exhaust gas inlet of the stenter, the second cavity is arranged above the first cavity, and the second cavity is provided with a fresh air inlet. The fan is installed in the second cavity for pressurizing the fresh air. The third cavity is installed on one side of the first cavity, and a filter is arranged between the third cavity and the first cavity. A stenter exhaust gas outlet is arranged at one end of the third cavity, and a fresh air outlet is arranged at the other end of the third cavity; a heat exchanger is arranged in the third cavity, and the heat exchanger has an exhaust gas inlet and an exhaust gas outlet, as well as a fresh air inlet and a fresh air outlet, wherein the exhaust gas inlet is arranged on one side of the exhaust gas inlet of the stenter in the first cavity, and the exhaust gas outlet is arranged opposite to the exhaust gas inlet; the fresh air inlet is arranged on one side of the fresh air inlet, and the fresh air outlet is arranged opposite to the fresh air inlet.

2. The waste heat recovery device of a setting machine according to claim 1, characterized in that: The box body is made of thermal insulation material.

3. The waste heat recovery device of a setting machine according to claim 1, characterized in that: The waste gas inlet of the setting machine is arranged at the lower left end of the box body, the fresh air inlet is arranged at the upper left end of the box body, the waste gas outlet of the setting machine is arranged at the upper right end of the box body, and the fresh air outlet is arranged at the lower right end of the box body.

4. The waste heat recovery device of a setting machine according to claim 1, characterized in that: The second cavity is separated from the first cavity by a cold and hot air isolation plate.

5. The waste heat recovery device of a setting machine according to claim 1, characterized in that: An air duct is arranged inside the heat exchanger. The exhaust gas channel is composed of an exhaust gas inlet, an air duct, and an exhaust gas outlet. The fresh air channel is composed of a fresh air inlet, an air duct, and a fresh air outlet. The exhaust gas and the fresh air meet in the heat exchanger to complete the heat exchange.

6. The waste heat recovery device of a setting machine according to claim 1, characterized in that: A brush mechanism is also provided in the first cavity. The brush mechanism includes a brush. The brush is provided on one side of the filter screen. The brush is installed on a chain and driven by a motor to make reciprocating motion. The brush is used to clean the fiber hair accumulated on the filter screen.

7. The waste heat recovery device of a setting machine according to claim 1, characterized in that: The heat exchanger is installed in the first cavity at its four corners through double-angle iron tracks. The double-angle iron tracks form an "L"-shaped track that fits the four corners of the heat exchanger. During installation, the heat exchanger is embedded in the double-angle iron tracks at the four corners to complete the installation and fixation of the heat exchanger.

8. The waste heat recovery device of a setting machine according to claim 1, characterized in that: Fastening screws and sealing strips are arranged around the heat exchanger to clamp the heat exchanger.

9. The waste heat recovery device of a setting machine according to claim 1, characterized in that: The heat exchanger is arranged obliquely in the box body, and an oil receiving pan is arranged at the bottom end of the obliquely arranged heat exchanger.

10. The waste heat recovery device of a setting machine according to claim 1, characterized in that: A first heat-insulating movable door is installed at the first chamber and the second chamber, and a second heat-insulating movable door is installed at the third chamber.

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