Boiler flue gas waste heat utilization device for bleaching and dyeing

Abstract

The utility model relates to the technical field of waste heat utilization, in particular to a boiler flue gas waste heat utilization device for bleaching and dyeing, which comprises a heat exchanger, a gas inlet pipe, a gas outlet pipe and the like. The front side of the heat exchanger communicates with an air inlet pipe, and the rear side of the air storage tank communicates with an air outlet pipe. Flue gas enters the heat exchanger through the gas inlet pipe, heat in the flue gas is absorbed by water in the water pipe, the temperature of water in the water pipe rises, meanwhile, air in the heat exchanger is heated, then the lead screw motor is started, the lead screw motor rotates to drive the baffle to move backwards along the threads, the notch in the baffle and the circular notch of the limiting plate are completely overlapped, and then the flue gas enters the heat exchanger. The cover plates are rotated upwards, the cover plates on the two sides of the connecting shaft are locked through the buckles, a channel is formed between the limiting plate and the air storage tank through connection of the cover plates, smoke enters the air storage tank through the channel and is exhausted through the air outlet pipe, the whole waste heat utilization process is completed, water and air are preheated at the same time, smoke waste heat is fully utilized, and the utilization rate of the smoke is increased. And the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of waste heat utilization technology, and in particular to a waste heat utilization device for boiler flue gas used in dyeing and bleaching. Background Technology

[0002] Waste heat recovery devices for boiler flue gas in dyeing and finishing are industrial energy-saving equipment mainly used in steam boiler systems in the textile printing and dyeing industry. In traditional industrial production, the high-temperature flue gas generated by boilers is directly discharged into the atmosphere, which is not only a huge waste of energy but may also cause environmental pollution. Flue gas waste heat recovery systems, namely boiler flue gas waste heat recovery devices, are an important means to improve energy efficiency and play a key role in industrial production. These systems are widely used for various purposes such as preheating air and preheating water, which helps to improve economic efficiency and save energy and reduce emissions.

[0003] Existing waste heat recovery devices for boiler flue gas in dyeing and bleaching often have limitations in their design. During the preheating process, they may lack an effective mechanism to preheat air simultaneously. Since the heat energy in flue gas is a limited resource, if it is only used for preheating water, some potential usable heat energy cannot be captured, especially when a large amount of preheated air is required. This leads to insufficient utilization of heat energy and reduces overall work efficiency. Therefore, there is an urgent need for a high-efficiency waste heat recovery device for boiler flue gas in dyeing and bleaching. Utility Model Content

[0004] In order to overcome the shortcomings of existing waste heat recovery devices for dyeing boilers, which cannot preheat air while preheating water, resulting in low working efficiency, this utility model provides a high-efficiency waste heat recovery device for dyeing boilers.

[0005] The technical solution of this utility model: In order to solve the above-mentioned technical problems, this utility model provides a waste heat utilization device for boiler flue gas in dyeing and finishing, including a heat exchanger, an inlet pipe, a water pipe, a gas storage tank, a support, an outlet pipe, a screw motor, and a baffle. The inlet pipe is connected to the front of the heat exchanger, the support is installed on one side of the heat exchanger, the gas storage tank is installed on the support, the outlet pipe is connected to the rear of the gas storage tank, the screw motor is installed at the rear of the heat exchanger, the screw motor is threadedly connected to the baffle through a coupling, the baffle has a notch, the water pipe is installed inside the heat exchanger, one end of the water pipe extends out of the heat exchanger, and the other end of the water pipe passes through the heat exchanger and the baffle in sequence, and extends out of the gas storage tank.

[0006] Preferably, it also includes a limiting plate, which is provided on one side of the heat exchanger. The limiting plate has a circular notch that matches the baffle, and the notch of the limiting plate and the notch of the baffle slide to overlap.

[0007] Preferably, it also includes a connecting shaft, which is rotatably mounted on the limiting plate.

[0008] Preferably, it also includes a cover plate, with cover plates symmetrically installed on both sides of the connecting shaft. The cover plates are located between the limiting plate and the gas storage tank, and a passage is formed between the limiting plate and the gas storage tank through the connection of the cover plates.

[0009] Preferably, it also includes a snap fastener, with a snap fastener provided on the top of the cover plate.

[0010] Preferably, it also includes activated carbon, which is movably installed on the inner wall of the cover plate, with the activated carbon facing the circular notch of the limiting plate.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model allows the flue gas to enter the heat exchanger through the inlet pipe. The heat in the flue gas is absorbed by the water in the water pipe, raising the water temperature. Simultaneously, it also heats the air in the heat exchanger. Then, the lead screw motor is started, and its rotation drives the baffle to move backward along the thread, so that the notch on the baffle completely overlaps with the circular notch on the limiting plate. Then, the cover plate is rotated upward, and the cover plates on both sides of the connecting shaft are locked by the buckle. The connection of the cover plates creates a passage between the limiting plate and the gas storage tank. The flue gas enters the gas storage tank through the passage and is discharged through the outlet pipe, completing the entire waste heat utilization process. It not only preheats water and air simultaneously but also makes fuller use of the waste heat of the flue gas, thus improving work efficiency.

[0013] 2. This utility model features activated carbon installed on the inner wall of the cover plate. Before the high-temperature flue gas enters the gas storage tank through the gap between the baffle and the limiting plate, the flue gas first passes through the activated carbon layer installed on the inner wall of the cover plate. The activated carbon adsorbs harmful substances in the flue gas, playing a preliminary role in flue gas purification. The purified flue gas then enters the gas storage tank and is discharged through the outlet pipe. This not only protects the environment but also improves the efficiency of subsequent treatment, further enhancing work efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the water pipe, limiting plate, air outlet pipe, cover plate, buckle, connecting shaft, activated carbon, lead screw motor and baffle of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the limiting plate and baffle of this utility model.

[0017] The labels in the attached diagram are: 1-heat exchanger, 2-air inlet pipe, 3-water pipe, 4-limiting plate, 5-air storage tank, 51-bracket, 52-air outlet pipe, 6-cover plate, 61-buckle, 62-connecting shaft, 63-activated carbon, 7-screw motor, 71-baffle. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Example 1: A device for utilizing waste heat from boiler flue gas used in dyeing and bleaching, such as... Figure 1 As shown, the system includes a heat exchanger 1, an inlet pipe 2, a water pipe 3, a gas storage tank 5, a support 51, an outlet pipe 52, a lead screw motor 7, and a baffle 71. The inlet pipe 2 is connected to the front of the heat exchanger 1. The heat exchanger 1 is the core component of the system, used for heat exchange. High-temperature flue gas generated by the boiler enters the heat exchanger 1 through the inlet pipe 2. The support 51 is installed on the right side of the heat exchanger 1, serving as support and mounting. The gas storage tank 5 is installed on the support 51 to store the treated gas. The outlet pipe 52 is connected to the rear of the gas storage tank 5 to discharge the gas from the storage tank 5. A lead screw motor 7 is installed on the rear side of the heat exchanger 1. The lead screw motor 7 is threadedly connected to a baffle 71 via a coupling. The lead screw motor 7 drives the baffle 71 to move along the thread via the coupling. A notch is opened on the baffle 71. A water pipe 3 is installed inside the heat exchanger 1. The left end of the water pipe 3 extends out of the heat exchanger 1, and the right end of the water pipe 3 passes through the heat exchanger 1 and the baffle 71 in sequence, and extends out of the gas storage tank 5. Inside the heat exchanger 1, the flue gas exchanges heat with the water in the water pipe 3. The heat in the flue gas is absorbed by the water in the water pipe 3, which raises the temperature of the water in the water pipe 3. At the same time, it also heats the air in the heat exchanger 1.

[0020] like Figure 2 and Figure 3 As shown, it also includes a limiting plate 4. A limiting plate 4 is provided on the right side of the heat exchanger 1. The limiting plate 4 has a circular notch that matches the baffle 71. The notch of the limiting plate 4 and the notch of the baffle 71 slide to coincide. When the rotation of the lead screw motor 7 drives the baffle 71 to move backward along the thread, the notch on the baffle 71 gradually slides to coincide with the circular notch of the limiting plate 4 until the two are completely matched. At this time, the position of the baffle 71 ensures that the flue gas can flow smoothly from the heat exchanger 1 into the next processing area.

[0021] like Figure 1 and Figure 2 As shown, it also includes a connecting shaft 62, a cover plate 6, and a buckle 61. The connecting shaft 62 is rotatably mounted on the limiting plate 4, and the cover plate 6 is symmetrically mounted on both sides of the connecting shaft 62. The connecting shaft 62 serves as the rotation fulcrum of the cover plate 6, allowing the cover plate 6 to open and close. The top of the cover plate 6 is provided with a buckle 61 to lock the cover plate 6 in the closed position, ensuring the sealing and safety of the system during operation. The cover plate 6 is located between the limiting plate 4 and the gas storage tank 5. Through the connection of the cover plate 6, a passage is formed between the limiting plate 4 and the gas storage tank 5, which facilitates the entry of high-temperature flue gas into the gas storage tank 5 through the gap between the baffle 71 and the limiting plate 4.

[0022] like Figure 2As shown, it also includes activated carbon 63. Activated carbon 63 is movably installed on the inner wall of the cover plate 6. The activated carbon 63 is directly opposite the circular notch of the limiting plate 4. Before the high-temperature flue gas enters the gas storage tank 5 through the notch between the baffle 71 and the limiting plate 4, the flue gas will first pass through the activated carbon 63 layer installed on the inner wall of the cover plate 6. The activated carbon 63 adsorbs harmful substances in the flue gas, playing a preliminary role in flue gas purification.

[0023] First, the high-temperature flue gas generated by the boiler enters the heat exchanger 1 through the inlet pipe 2. Inside the heat exchanger 1, the flue gas exchanges heat with the water in the water pipe 3. The heat in the flue gas is absorbed by the water in the water pipe 3, raising the water temperature in the water pipe 3. At the same time, it also heats the air in the heat exchanger 1 for subsequent heat energy utilization. The lead screw motor 7 is started, and the rotation of the lead screw motor 7 drives the baffle 71 to move backward along the thread. As the baffle 71 moves, the notch on the baffle 71 gradually slides to coincide with the circular notch on the limiting plate 4 until the two are completely matched. At this time, the position of the baffle 71 ensures that the flue gas can flow smoothly from the heat exchanger 1 into the next processing area. Then, activated carbon 63 is placed on the inner wall of the cover plate 6, and the cover plate 6 is rotated upward. The cover plate 6 on both sides of the connecting shaft 62 is locked by the buckle 61. The connection of the cover plate 6 creates a passage between the limiting plate 4 and the gas storage tank 5. To facilitate flue gas flow, before the high-temperature flue gas enters the gas storage tank 5 through the gap between the baffle 71 and the limiting plate 4, the flue gas first passes through the activated carbon 63 layer installed on the inner wall of the cover plate 6. The activated carbon 63 adsorbs harmful substances in the flue gas, playing a preliminary role in flue gas purification. The purified flue gas then enters the gas storage tank 5 and is discharged through the exhaust pipe 52, completing the entire waste heat utilization process. The limiting plate 4 set on one side of the heat exchanger 1 physically restricts the movement range of the baffle 71, ensuring that the baffle 71 can move on a predetermined trajectory. The cover plate 6 is set to form a passage between the baffle 71 and the gas storage tank 5. The buckle 61 is used to lock the cover plate 6, ensuring that the cover plate 6 is stable and reliable during operation. When the flue gas passes through the gap formed by the limiting plate 4 and the baffle 71, it will come into contact with the activated carbon 63 layer on the inner wall of the cover plate 6, and the harmful substances will be adsorbed. The cleaned flue gas continues to move forward.

[0024] The above-described embodiments are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A waste heat recovery device for boiler flue gas used in dyeing and bleaching, comprising a heat exchanger (1), an inlet pipe (2), and an outlet pipe (52), wherein the inlet pipe (2) is connected to the front side of the heat exchanger (1), and the outlet pipe (52) is connected to the rear side of the gas storage tank (5), characterized in that, It also includes a water pipe (3), an air tank (5), a bracket (51), a screw motor (7) and a baffle (71). A bracket (51) is installed on one side of the heat exchanger (1), and an air tank (5) is installed on the bracket (51). A screw motor (7) is installed on the rear side of the heat exchanger (1). The screw motor (7) is threadedly connected to the baffle (71) through a coupling. A notch is opened on the baffle (71). A water pipe (3) is installed inside the heat exchanger (1). One end of the water pipe (3) extends out of the heat exchanger (1), and the other end of the water pipe (3) passes through the heat exchanger (1) and the baffle (71) in sequence, and extends out of the air tank (5).

2. The waste heat recovery device for boiler flue gas used in dyeing and bleaching according to claim 1, characterized in that, It also includes a limiting plate (4). A limiting plate (4) is provided on one side of the heat exchanger (1). The limiting plate (4) has a circular notch that matches the baffle (71). The notch of the limiting plate (4) and the notch of the baffle (71) slide to overlap.

3. The waste heat recovery device for boiler flue gas used in dyeing and bleaching according to claim 2, characterized in that, It also includes a connecting shaft (62), which is rotatably mounted on the limiting plate (4).

4. The waste heat recovery device for boiler flue gas used in dyeing and bleaching according to claim 3, characterized in that, It also includes a cover plate (6), and the cover plate (6) is symmetrically installed on both sides of the connecting shaft (62). The cover plate (6) is located between the limiting plate (4) and the gas storage tank (5). Through the connection of the cover plate (6), a passage is formed between the limiting plate (4) and the gas storage tank (5).

5. The waste heat recovery device for boiler flue gas used in dyeing and bleaching according to claim 4, characterized in that, It also includes a buckle (61), and the top of the cover plate (6) is provided with a buckle (61).

6. The waste heat recovery device for boiler flue gas used in dyeing and bleaching according to claim 5, characterized in that, It also includes activated carbon (63), which is movably installed on the inner wall of the cover plate (6), and the activated carbon (63) is directly opposite the circular notch of the limiting plate (4).

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