Air exhaust duct water vapor condensation collection device

Abstract

The utility model discloses a kind of exhaust duct water vapor condensation collection devices, it is related to tobacco processing equipment technical field, exhaust duct inside close to the export of fan is parallel to the condensing plate of dense arrangement in flow direction, heat pipe is embedded into each condensing plate, with each condensing plate heat conduction connection fixed, and communicate to in circulating water cooling loop;The bottom of condensing plate is inclined plate structure by two sides respectively downward, and form the flow guide portion at the intersection of two side inclined plate structure, and the flow guide portion is directly below the liquid guide plate fixedly arranged with exhaust duct installation.The utility model condenses water vapor in high-humidity flue gas by condensing plate, and condensate is directly discharged exhaust duct by the flow of condensing plate and liquid guide plate in the position close to fan export;Circulating water cooling loop carries out circulating heat dissipation cooling to condensing plate, effectively solve the problem of exhaust duct inner wall scale caused by high-humidity flue gas, conducive to the control of equipment maintenance cost and the guarantee of production continuity.

Description

Technical Field

[0001] This utility model relates to the technical field of tobacco processing equipment, specifically to a device for condensing and collecting water vapor in exhaust ducts. Background Technology

[0002] In tobacco processing, some key processes, such as leaf moistening and feeding, generate high-humidity smoke with temperatures of 60-120℃ and relative humidity of 30-80%, which is discharged through exhaust ducts.

[0003] In actual production, high humidity flue gas leads to scale buildup on the inner walls of exhaust ducts, requiring frequent shutdowns for cleaning and maintenance. This not only increases maintenance costs but also disrupts normal production. Furthermore, as the temperature of the high-humidity flue gas naturally decreases within the exhaust ducts, moisture in the gas condenses and accumulates. Some of this condensate flows back along the inner wall of the duct into the fan, increasing internal resistance and affecting its normal operation. It also easily causes pitting corrosion on the inner wall of the exhaust duct, further impacting the fan's lifespan.

[0004] Existing technology collects condensate in the exhaust duct by opening a drain hole at the bottom of the exhaust duct and connecting the drain hole to a water collection tank. Although this can solve the problem of condensate backflow, it cannot solve the problem of scale buildup on the inner wall of the exhaust duct caused by high humidity flue gas. Utility Model Content

[0005] This invention aims to overcome the shortcomings of the existing technology by providing a water vapor condensation and collection device for exhaust pipes.

[0006] The present invention adopts the following technical solution to solve the technical problem: a water vapor condensation and collection device for an exhaust duct, wherein the exhaust duct is connected to the outlet of a fan, and includes a condensation plate, a heat conduction pipe, a liquid guide plate and a drainage pipe;

[0007] The condenser plates are arranged in a dense array parallel to the flow direction near the outlet of the fan in the exhaust duct. The heat pipe is embedded in each of the condenser plates, and is thermally connected and fixed to each of the condenser plates, and is connected to the circulating water cooling circuit.

[0008] The bottom edge of the condenser plate has a sloping plate structure that slopes downward from both sides, and a flow guide is formed at the intersection of the sloping plate structures on both sides. A liquid guide plate that is installed and fixed to the exhaust duct is provided directly below the flow guide.

[0009] Furthermore, the portion of the heat pipe that is thermally connected and fixed to each of the condensing plates has a meandering tubular structure. Furthermore, the portion of the heat pipe that is thermally connected and fixed to each of the condensing plates has a serpentine tube structure.

[0010] Furthermore, the liquid guide plate is disposed in close to one inner side wall of the exhaust duct, and the flow guide portion is disposed close to the inner side wall accordingly.

[0011] Furthermore, the liquid guide plate is connected to a drain pipe.

[0012] According to the exhaust duct water vapor condensation and collection device according to claim 1, the heat-conducting pipe is a copper pipe and the condensation plate is an aluminum alloy plate;

[0013] The heat pipe and the condenser plate are fixed together by a seamless heat conduction connection through brazing.

[0014] Furthermore, the condenser plates are densely arranged along the flow cross section inside the exhaust pipe.

[0015] Furthermore, the circulating water cooling circuit includes a pump, the heat pipe, a radiator, and a water tank connected in sequence by pipes. A temperature sensor and a pressure sensor with their measuring ends located inside the pipe are provided on the pipe between the heat pipe and the radiator.

[0016] Furthermore, the liquid guiding plate is inclined downward along the liquid guiding direction.

[0017] Furthermore, the surface of the liquid guiding plate is coated with a hydrophobic layer.

[0018] This utility model provides a water vapor condensation collection device for exhaust pipes, which has the following beneficial effects:

[0019] 1. This utility model uses a condenser plate to condense water vapor in high-humidity flue gas, causing the water vapor to form condensate on the condenser plate. The condensate is then guided by the condenser plate and the liquid guide plate to be directly discharged into the exhaust duct near the fan outlet. The circulating water cooling circuit circulates heat to cool the condenser plate, ensuring the high efficiency, stability, and continuity of the condensation effect. This effectively solves the problem of scale buildup on the inner wall of the exhaust duct caused by high-humidity flue gas, which is beneficial for controlling equipment maintenance costs and ensuring production continuity.

[0020] 2. The condenser plates of this utility model are densely arranged, which increases the heat exchange area between the condenser plates and the high-humidity flue gas. The heat pipe is set as a tortuous tubular structure, which increases the heat exchange area between the heat pipe and the condenser plates, resulting in high condensation efficiency and good effect.

[0021] 3. This utility model greatly reduces the amount of water vapor emitted into the environment, realizes the recovery of condensate for reuse, reduces water waste, and has certain environmental benefits.

[0022] 4. This utility model has a simple structure, is easy to maintain and clean, and is particularly suitable for exhaust ducts of high-temperature airflow in various types of smoke-making equipment.

[0023] Especially in processes with high humidity, it has significant practical application value. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the connection of the circulating water cooling circuit of this utility model.

[0026] In the picture:

[0027] 1. Exhaust duct, 2. Fan, 3. Condensate plate, 4. Heat pipe, 5. Temperature sensor, 6. Pressure sensor, 7. Liquid guide plate, 8. Radiator, 9. Water tank. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] A water vapor condensation collection device for exhaust ducts, such as Figures 1-2 As shown, its structural relationship is as follows: the exhaust duct is connected to the outlet of the fan 2, and includes the condenser plate 3, the heat conduction pipe 4, the liquid guide plate 7 and the drain pipe;

[0030] Condensing plates 3 are arranged in a dense array parallel to the flow direction near the outlet of the fan 2 in the exhaust duct. The dense array of condensing plates increases the heat exchange area between the condensing plates 3 and the high-humidity flue gas, thereby improving the heat exchange efficiency. Heat pipes 4 are embedded in each condensing plate 3, are thermally connected and fixed to each condensing plate 3, and are connected to the circulating water cooling circuit.

[0031] The bottom edge of the condenser plate 3 is a sloping plate structure that slopes downward from both sides, and a guide section is formed at the intersection of the two sloping plate structures. A liquid guide plate 7 is installed and fixed to the exhaust duct directly below the guide section.

[0032] The condenser plate 3 is preferably made of aluminum alloy plate with a thickness of 1.5mm, and adjacent condenser plates 3 are preferably evenly arranged at a spacing of 40-60mm to increase the heat exchange area.

[0033] Preferably, the portion where the heat pipe 4 is thermally connected and fixed to each condenser plate 3 has a meandering tubular structure. This increases the heat exchange area between the condenser plate 3 and the heat pipe 4, thereby improving heat exchange efficiency.

[0034] Preferably, the part where the heat pipe 4 is fixed to each condenser plate 3 for heat conduction is a serpentine tube structure.

[0035] The heat pipe 4 preferably has a wall thickness of 0.8-1.5mm, and the spacing between adjacent pipe sections is preferably 10-20mm.

[0036] Preferably, the liquid guide plate 7 is disposed in close to the inner side wall of one side of the exhaust duct, and the flow guide part is disposed close to the inner side wall accordingly.

[0037] Preferably, the liquid guide plate 7 is connected to a drain pipe.

[0038] Heat pipe 4 is made of copper, and condenser plate 3 is made of aluminum alloy.

[0039] The heat pipe 4 and the condenser plate 3 are fixed together by a seamless heat conduction connection through brazing.

[0040] Preferably, the exhaust pipe is covered with densely arranged condenser plates 3 along its flow cross section.

[0041] Preferably, the circulating water cooling circuit includes a pump, a heat pipe 4, a radiator 8 and a water tank 9 connected in sequence by pipes. A temperature sensor and a pressure sensor with their measuring ends located inside the pipe are provided on the pipe between the heat pipe 4 and the radiator 8.

[0042] Temperature sensors are used to monitor the cooling effect by measuring the temperature of the circulating cooling water, so as to adjust the power of the pump accordingly and ensure that the cooling effect meets the needs of stable and safe operation of the fan. Pressure sensors are used to monitor the working status of the circulating water cooling circuit. When the pressure measured by the pressure sensor is lower than the set safety value, the circulating water cooling circuit should be inspected and repaired, and attention should be paid to leakage problems in the circulating water cooling circuit.

[0043] Preferably, the liquid guiding plate 7 is inclined downward along the liquid guiding direction, and the inclination angle is preferably 25°~40°.

[0044] Preferably, the surface of the liquid guiding plate 7 is coated with a hydrophobic layer, and the hydrophobic layer material is preferably polytetrafluoroethylene, silica sol or silicon carbide.

[0045] The above-mentioned water vapor condensation and collection device is used to collect water vapor from high-humidity flue gas near the outlet of fan 2 in the exhaust duct, including the following process:

[0046] High-humidity flue gas enters the exhaust duct 1 through the outlet of the fan 2 under the action of the fan 2. When it flows through the densely arranged condenser plates 3, the water vapor in it is quickly liquefied into condensate under the condensation effect of the condenser plates 3. The condensate flows downward along the condenser plates 3 under the action of gravity and the guiding effect of the condenser plates 3, and falls from the guide section to the liquid guide plate 7 below the guide section. Then, under the guiding effect of the liquid guide plate 7, it is discharged and collected through the drain pipe for recycling.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A water vapor condensation and collection device for an exhaust duct, wherein the exhaust duct is connected to the outlet of a fan (2), characterized in that: It includes a condenser plate (3), a heat pipe (4), a liquid guide plate (7), and a drain pipe; The condenser plates (3) are arranged in a dense array parallel to the flow direction near the outlet of the fan (2) in the exhaust duct. The heat pipe (4) is embedded in each of the condenser plates (3), and is heat-conducted and fixed to each of the condenser plates (3), and connected to the circulating water cooling circuit. The bottom edge of the condenser plate (3) is a sloping plate structure that slopes downward from both sides, and a flow guide is formed at the intersection of the sloping plate structures on both sides. A liquid guide plate (7) that is installed and fixed to the exhaust pipe is provided directly below the flow guide.

2. The exhaust duct water vapor condensation collection device according to claim 1, characterized in that: The portion of the heat pipe (4) that is thermally connected and fixed to each of the condenser plates (3) has a meandering tubular structure.

3. The exhaust duct water vapor condensation collection device according to claim 2, characterized in that: The heat pipe (4) and each of the condenser plates (3) are connected and fixed by heat conduction in a serpentine tube structure.

4. The exhaust duct water vapor condensation collection device according to claim 1, characterized in that: The liquid guide plate (7) is set against the inner side wall of one side of the exhaust pipe, and the flow guide part is set close to the inner side wall accordingly.

5. A water vapor condensation and collection device for exhaust ducts according to claim 1, characterized in that: The liquid guide plate (7) is connected to a drain pipe.

6. The exhaust duct water vapor condensation collection device according to claim 1, characterized in that: The heat pipe (4) is a copper pipe, and the condenser plate (3) is an aluminum alloy plate; The heat pipe (4) and the condenser plate (3) are fixed together by a seamless heat conduction connection through brazing.

7. The exhaust duct water vapor condensation collection device according to claim 1, characterized in that: The condenser plates (3) are densely arranged in the flow section inside the exhaust duct.

8. The exhaust duct water vapor condensation collection device according to claim 1, characterized in that: The circulating water cooling circuit includes a pump, the heat pipe (4), the radiator (8) and the water tank (9) connected in sequence by pipes. A temperature sensor and a pressure sensor with the measuring end located inside the pipe are provided on the pipe between the heat pipe (4) and the radiator (8).

9. A water vapor condensation collection device for exhaust ducts according to claim 1, characterized in that: The liquid guiding plate (7) is inclined downward along the liquid guiding direction.

10. A water vapor condensation and collection device for exhaust ducts according to claim 1, characterized in that: The surface of the liquid guide plate (7) is coated with a hydrophobic layer.

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