Wind and rain sealing structure in ventilating duct

Abstract

The invention relates to the technical field of ship ventilation pipeline sealing, in particular to a ventilation pipeline internal wind and rain sealing structure which comprises a ventilation pipeline and further comprises a detection mechanism which comprises a wind power detection assembly used for detecting wind power intensity, a humidity detection assembly used for detecting air humidity and a rainwater detection assembly used for detecting rainwater. The wind power detection assembly comprises a rotating structure which can be blown by wind power. The wind power detection assembly detects the real-time wind power by utilizing a rotating structure and magnetic induction line cutting current, the rainwater detection assembly detects the rainfall capacity in real time through a water level monitor, and when strong wind and no heavy rain exist, a rotating sealing plate can block a main air inlet channel, so that air enters from a secondary air inlet channel, and the rainwater detection assembly detects the rainfall capacity in real time. And excessive air is prevented from entering a garage or a warehouse in the roll-on-roll-off ship, and the risk possibly caused by the excessive air to the stable operation of the ventilation system is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation, and particularly relates to a wind and rain sealing structure inside a ventilation duct. Background Art

[0002] The ventilation duct is an important system to ensure the air circulation inside the ship. It is mainly used to exhaust the waste gas, hot air and humid air inside the ship, and at the same time introduce fresh air. The design and installation of the ship ventilation duct system are crucial for the safety and comfort of the ship.

[0003] The air inlets of the ventilation ducts in ships are designed differently according to different needs and usage scenarios. Among them, horizontal air inlets are usually used in ro-ro ships. The horizontal air inlets are usually designed on the side or deck. These air inlets help to introduce the external fresh air into the garage and cargo holds of the ro-ro ship, and natural ventilation improves the air circulation. For example, a ventilation duct system disclosed in the application number CN202111531534.3 is an air inlet with a horizontal air inlet.

[0004] To ensure the efficiency of the ventilation system in the ventilation duct and the safety of the ship, a sealing structure is usually provided. The existing sealing structure is either completely sealed or completely open, and cannot automatically adjust according to the actual weather conditions (wind, rain, air humidity), which may lead to a decrease in the efficiency of the ventilation system. For example, a fixed seal may not provide the best sealing effect during strong winds or heavy rains, resulting in air leakage. Or in the case of light winds and light rains, the ventilation effect may not meet expectations, and the gentle breeze cannot be fully utilized to increase the air circulation, thus affecting the internal air circulation and ventilation efficiency. And in a high humidity environment, the fixed sealing structure may not effectively prevent moisture from entering, and excessive moisture will damage the materials inside the ship (such as wood, insulation materials, etc.). Summary of the Invention

[0005] Aiming at the above-mentioned disadvantages of the prior art, the present invention provides a wind and rain sealing structure inside a ventilation duct, which can effectively solve the problem that the existing sealing structure cannot automatically adjust the sealing structure according to the actual weather conditions (wind, rain, air humidity).

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: The present invention provides a wind and rain sealing structure inside a ventilation duct, including a ventilation duct, and further including: Detection mechanism, the detection mechanism includes a wind force detection component for detecting wind force intensity, a humidity detection component for detecting air humidity, and a rain detection component for detecting rain. The wind force detection component includes a rotating structure that can be blown by wind force. The other side of the rotating structure is used to cut magnetic induction lines to generate current and detect the magnitude of the current generated by cutting magnetic induction lines. The humidity detection component includes a moisture absorption detection plate for absorbing moisture. A fixed frame is fixedly connected to the outer wall of the moisture absorption detection plate. A moving frame is slidably arranged on the outer wall of the fixed frame. A sliding rheostat is jointly arranged on the outer walls of the moving frame and the fixed frame. The rain detection component includes a water level monitor for detecting the height of rainwater; Sealing mechanism, the sealing mechanism includes a lifting sealing plate and a rotating sealing plate, and the lifting sealing plate and the rotating sealing plate automatically block the ventilation duct according to the detection mechanism; Dehumidification mechanism, the dehumidification mechanism includes a first dehumidification plate for dehumidifying under normal conditions and a second dehumidification plate and a third dehumidification plate for alternating dehumidification under strong wind conditions.

[0007] Preferably, a partition is fixedly connected to the inner wall of the ventilation duct. The partition divides the ventilation duct into a main air inlet channel and a secondary air inlet channel up and down. The wind force detection component and the humidity detection component are both arranged in the main air inlet channel.

[0008] Preferably, the wind force detection component further includes a wind force detection box fixedly connected to the top of the partition. The rotating structure includes a rotating rod that rotates through the wind force detection box. A wind wheel is fixedly connected to the outer wall of the rotating rod. A conductive rod is fixedly connected to the outer wall near the other end of the rotating rod. N-level magnets and S-level magnets are fixedly connected to the inner wall of the wind force detection box, and the conductive rod is between the N-level magnets and the S-level magnets and is parallel to each other. The conductive rod is electrically connected to a PLC controller to form a wind force detection circuit.

[0009] Preferably, the humidity detection component includes a drying box fixedly connected to the top of the partition. A first electric telescopic rod is fixedly connected to the inner wall of the drying box. The telescopic end of the first electric telescopic rod is fixedly connected to the moving frame. Sliding grooves are respectively opened on the inner walls of the opposite sides of the moving frame. Sliding blocks are respectively slidably connected to the inner walls of the sliding grooves. First springs are respectively fixedly connected to the bottom ends of the sliding blocks and the top ends of the sliding grooves. The sliding blocks are jointly fixedly connected to the outer wall of the fixed frame. The sliding rheostat includes a resistance plate fixedly connected to the inner wall of one of the sliding grooves. A conductive sheet that slidably contacts the resistance plate is fixedly connected to the outer wall of the sliding block. The PLC controller is electrically connected to the sliding rheostat to form a humidity detection circuit. The resistance of the humidity detection circuit gradually decreases during the process of the conductive sheet sliding down on the resistance plate. Two symmetrically arranged first heating plates are fixedly connected to the inner wall of the drying box.

[0010] Preferably, the rainwater detection component includes a water receiving tank fixedly connected to the top end of the ventilation duct. The inner bottom wall of the water receiving tank is fixedly connected to a water level monitor. The outer walls on both sides of the water receiving tank are respectively communicated with a thin drain pipe and a thick drain pipe. The water level monitor is electrically connected to the PLC controller to form a precipitation detection circuit.

[0011] Preferably, the sealing mechanism includes a sliding groove opened at the top end of the ventilation duct. A clamping groove communicated with and vertically corresponding to the sliding groove is opened at the top end of the partition plate. The inner wall of the sliding groove is hermetically slidably connected to the outer wall of the lifting sealing plate. The bottom end of the lifting sealing plate can contact the clamping groove. A moving groove is opened on the inner wall of the sliding groove. An electromagnet and two symmetrically arranged second springs are fixedly connected to the inner wall of the moving groove. The other ends of the second springs are jointly fixedly connected to a permanent magnet attracted magnetically by the electromagnet. A through hole for clamping the permanent magnet is opened on the outer wall of the lifting sealing plate. A driving motor is fixedly connected to the outer wall of the ventilation duct. The output end of the driving motor is fixedly connected to the outer wall of the rotating sealing plate. A push rod is fixedly connected to the bottom end of the lifting sealing plate. The other end of the push rod slidably penetrates through the clamping groove, extends into the main air inlet channel and can contact the outer wall of the rotating sealing plate.

[0012] Preferably, the dehumidification mechanism includes a ventilation groove opened on the outer wall of the partition plate. The ventilation groove is located between the rotating sealing plate and the push rod. Two symmetrically arranged telescopic grooves are opened on the inner wall of the ventilation groove. A communication groove is opened between the two telescopic grooves. A second electric telescopic rod is fixedly connected to the inner wall of the upper telescopic groove. The telescopic end of the second electric telescopic rod is fixedly connected to a second dehumidification plate. The inner wall of the lower telescopic groove is slidably connected to a third dehumidification plate. Tooth plates are fixedly connected to the bottom end of the second dehumidification plate and the top end of the third dehumidification plate. A gear meshing with the tooth plates is rotatably connected to the inner wall of the communication groove. Second heating plates are fixedly connected to the top end of the upper telescopic groove and the bottom end of the lower telescopic groove.

[0013] Preferably, heating shells are fixedly connected in both the main air inlet channel and the secondary air inlet channel. A third heating plate is fixedly connected to the inner wall of the heating shell. A plurality of heat conducting plates are linearly arrayed on the outer wall of the third heating plate. A first dehumidification plate is fixedly connected between the heating shell and the inner wall of the ventilation duct. The heat conducting plates penetrate through the heating shell and extend into the first dehumidification plate. A plurality of ventilation holes are opened on the outer wall of the heating shell. The PLC controller is electrically connected to the second heating plate, the first heating plate and the third heating plate to form a drying circuit.

[0014] The technical solution provided by the present invention has the following beneficial effects compared with the known prior art: 1. The wind detection component uses a rotating structure and magnetic induction line cutting to detect the real-time wind force. The rain detection component uses a water level monitor to detect the rainfall in real time. When there is strong wind but no heavy rain, the rotating sealing plate can block the main air inlet channel, allowing air to enter through the secondary air inlet channel, preventing excessive air volume from entering the garage or cargo hold of the roll-on / roll-off ship, as excessive air volume may pose a risk to the stable operation of the ventilation system. When there is strong wind and heavy rain, the lifting sealing plate seals the secondary air inlet channel, allowing air to enter the garage and cargo hold through the ventilation slots. Therefore, the sealing mechanism can automatically adjust the sealing according to wind force and rain, ensuring the best sealing effect of the system under different weather conditions.

[0015] 2. During the process of air entering through the ventilation slots, the dehumidification mechanism adsorbs the moisture in the air through the second dehumidification plate or the third dehumidification plate, and automatically activates the dehumidification function when the detected humidity reaches the threshold, automatically dehumidifying the second dehumidification plate or the third dehumidification plate, improving the automation level and dehumidification efficiency of the system. In the normal ventilation state, when the humidity detection component detects high humidity in the air, the PLC controller increases the power of the third heating plate to raise the heating temperature, and then transfers the heat to the first dehumidification plate through the heat conduction plate, thereby drying the moisture in the first dehumidification plate and enabling the first dehumidification plate to maintain its moisture absorption function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 Schematic three-dimensional structure of the present invention Figure 1 ; Figure 2 Schematic three-dimensional structure of the present invention Figure 2 ; Figure 3 Schematic sectional three-dimensional structure diagram of the wind detection component of the present invention; Figure 4 Schematic sectional three-dimensional structure diagram of the humidity detection component of the present invention; Figure 5 Schematic exploded three-dimensional structure diagram of a part of the humidity detection component of the present invention; Figure 6 Schematic sectional three-dimensional structure diagram of the present invention; Figure 7 Schematic three-dimensional structure diagram of a part of the dehumidification mechanism of the present invention; Figure 8Schematic sectional three-dimensional structure diagram of the partial dehumidification mechanism of the present invention.

[0018] Reference numerals: 1, ventilation duct; 2, detection mechanism; 21, wind force detection component; 211, wind force detection box; 212, rotating rod; 213, wind wheel; 214, conductive rod; 215, N-level magnet; 216, S-level magnet; 22, humidity detection component; 221, moisture absorption detection plate; 222, fixed frame; 223, moving frame; 224, drying box; 225, first electric telescopic rod; 226, chute; 227, slider; 228, first spring; 229, resistance plate; 2210, conductive sheet; 2211, first heating plate; 23, rain detection component; 231, water level monitor; 232, water receiving tank; 233, thin drain pipe; 234, thick drain pipe; 3, sealing mechanism; 31, lifting sealing plate; 32, rotating sealing plate; 33, sliding groove; 34, clamping groove; 35, moving groove; 36, electromagnet; 37, second spring; 38, permanent magnet block; 39, through hole; 310, drive motor; 311, push rod; 4, dehumidification mechanism; 41, first dehumidification plate; 42, second dehumidification plate; 43, third dehumidification plate; 44, ventilation groove; 45, telescopic groove; 46, communication groove; 47, second electric telescopic rod; 48, toothed plate; 49, gear; 410, second heating plate; 411, heating shell; 412, third heating plate; 413, heat conduction plate; 414, ventilation hole; 5, partition board; 6, main air inlet channel; 7, secondary air inlet channel. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Embodiment: Refer to Figures 1 to 8 , a wind and rain sealing structure inside a ventilation duct, including a ventilation duct 1, and further including: A partition board 5 is fixedly connected to the inner wall of the ventilation duct 1. The partition board 5 divides the ventilation duct into a main air inlet channel 6 and a secondary air inlet channel 7 up and down. The wind force detection component 21 and the humidity detection component 22 are both arranged in the main air inlet channel 6, and the air inlet area of the main air inlet channel 6 is much larger than that of the secondary air inlet channel 7.

[0022] Through the following structure, the wind, rain and air humidity can be detected. Refer to Figures 1 to 5, the detection agency 2, which includes a wind detection component 21 for detecting wind intensity, a humidity detection component 22 for detecting air humidity, and a rain detection component 23 for detecting rain. The wind detection component 21 includes a rotating structure that can be blown by the wind. The other side of the rotating structure is used to cut magnetic induction lines to generate current and detect the magnitude of the current generated by cutting the magnetic induction lines. The humidity detection component 22 includes a moisture absorption detection plate 221 for absorbing moisture. A fixed frame 222 is fixedly connected to the outer wall of the moisture absorption detection plate 221. A moving frame 223 is slidably arranged on the outer wall of the fixed frame 222. A sliding rheostat is jointly arranged on the outer walls of the moving frame 223 and the fixed frame 222. The rain detection component 23 includes a water level monitor 231 for detecting the rain height; Among them, the wind is detected through the following specific structure. Refer to Figure 2 Figure 3 , the wind detection component 21 further includes a wind detection box 211 fixedly connected to the top of the partition 5. The rotating structure includes a rotating rod 212 that rotates through the wind detection box 211. A wind wheel 213 is fixedly connected to the outer wall of the rotating rod 212. A conductive rod 214 is fixedly connected to the outer wall near the other end of the rotating rod 212. An N - pole magnet 215 and an S - pole magnet 216 are fixedly connected to the inner wall of the wind detection box 211. And the conductive rod 214 is located between the N - pole magnet 215 and the S - pole magnet 216 and is parallel to them. The conductive rod 214 is electrically connected to a PLC controller to form a wind detection circuit.

[0023] Among them, the humidity in the air can be detected through the following specific structure. Refer to Figure 2 , Figure 4 , Figure 5, the humidity detection component 22 includes a drying box 224 fixedly connected to the top of the partition plate 5. The inner wall of the drying box 224 is fixedly connected with a first electric telescopic rod 225. The telescopic end of the first electric telescopic rod 225 is fixedly connected with a moving frame 223. The inner walls of the opposite sides of the moving frame 223 are both provided with sliding grooves 226. The inner walls of the sliding grooves 226 are both slidably connected with sliders 227. The bottom ends of the sliders 227 and the top ends of the sliding grooves 226 are both fixedly connected with first springs 228. The outer wall of the fixed frame 222 is fixedly connected between the two sliders 227. The sliding rheostat includes a resistance plate 229 fixedly connected to the inner wall of one of the sliding grooves 226. The outer wall of the slider 227 is fixedly connected with a conductive sheet 2210 that is in sliding contact with the resistance plate 229. The PLC controller is electrically connected to the sliding rheostat to form a humidity detection circuit. The resistance of the humidity detection circuit gradually decreases during the process of the conductive sheet 2210 sliding downwards on the resistance plate 229. The inner wall of the drying box 224 is fixedly connected with two symmetric first heating plates 2211. When the moisture absorption detection plate 221 reaches the threshold, the PLC controller controls the first electric telescopic rod 225 to drive the moisture absorption detection plate 221 to contract into the drying box 224, and then the PLC controller controls the first heating plates 2211 to start to dry the moisture absorption detection plate 221.

[0024] Among them, the rainfall can be detected through the following specific structure. Refer to Figure 1 , Figure 2 , the rainwater detection component 23 includes a water receiving tank 232 fixedly connected to the top of the ventilation duct 1. The inner bottom wall of the water receiving tank 232 is fixedly connected with a water level monitor 231. The two outer walls of the water receiving tank 232 are respectively communicated with a thin drain pipe 233 and a thick drain pipe 234. The water level monitor 231 is electrically connected to the PLC controller to form a precipitation detection circuit. Among them, the thick drain pipe 234 is provided with a normally closed solenoid valve, and the PLC controller controls the closing of the normally closed solenoid valve. During heavy rain, the PLC controller controls the normally closed solenoid valve to open every preset time interval. During this preset time, the rainwater is completely discharged through the thick drain pipe 234, and then it is closed to continue the detection.

[0025] Through the following specific structure, the ventilation duct 1 can be sealed. Refer to Figure 6 , the sealing mechanism 3. The sealing mechanism 3 includes a lifting sealing plate 31 and a rotating sealing plate 32. The lifting sealing plate 31 and the rotating sealing plate 32 automatically block the ventilation duct 1 according to the detection mechanism 2; Among them, the sealing mechanism 3 includes a sliding groove 33 opened at the top end of the ventilation duct 1. A clamping groove 34 that is vertically corresponding and communicated with the sliding groove 33 is opened at the top end of the partition plate 5. The inner wall of the sliding groove 33 is hermetically and slidably connected to the outer wall of the lifting sealing plate 31. The bottom end of the lifting sealing plate 31 can contact the clamping groove 34. A moving groove 35 is opened on the inner wall of the sliding groove 33. An electromagnet 36 and two symmetrically arranged second springs 37 are fixedly connected to the inner wall of the moving groove 35. The other ends of the second springs 37 are jointly fixedly connected to a permanent magnet 38 that is magnetically attracted to the electromagnet 36. A through hole 39 that is clamped with the permanent magnet 38 is opened on the outer wall of the lifting sealing plate 31. A driving motor 310 is fixedly connected to the outer wall of the ventilation duct 1. The output end of the driving motor 310 is fixedly connected to the outer wall of the rotating sealing plate 32. A push rod 311 is fixedly connected to the bottom end of the lifting sealing plate 31. The other end of the push rod 311 slidably penetrates through the clamping groove 34, extends into the main air inlet passage 6, and can contact the outer wall of the rotating sealing plate 32. And the second spring 37 is made of a non-ferromagnetic material.

[0026] Through the following specific structure, the air entering the ventilation duct 1 can be dehumidified. Refer to Figures 6 to 8 , the dehumidification mechanism 4. The dehumidification mechanism 4 includes a first dehumidification plate 41 for dehumidifying under normal conditions and a second dehumidification plate 42 and a third dehumidification plate 43 for alternating dehumidification under strong wind conditions.

[0027] The dehumidification mechanism 4 includes a ventilation groove 44 opened on the outer wall of the partition plate 5. The ventilation groove 44 is located between the rotating sealing plate 32 and the push rod 311. Two symmetrically arranged telescopic grooves 45 are opened on the inner wall of the ventilation groove 44. A communication groove 46 is opened between the two telescopic grooves 45. A second electric telescopic rod 47 is fixedly connected to the inner wall of the upper telescopic groove 45. The telescopic end of the second electric telescopic rod 47 is fixedly connected to the second dehumidification plate 42. The inner wall of the lower telescopic groove 45 is slidably connected to the third dehumidification plate 43. Tooth plates 48 are fixedly connected to the bottom end of the second dehumidification plate 42 and the top end of the third dehumidification plate 43. A gear 49 that meshes with the tooth plates 48 is rotatably connected to the inner wall of the communication groove 46. Second heating plates 410 are fixedly connected to the top end of the upper telescopic groove 45 and the bottom end of the lower telescopic groove 45.

[0028] A heating shell 411 is fixedly connected inside both the main air inlet channel 6 and the secondary air inlet channel 7. A third heating plate 412 is fixedly connected to the inner wall of the heating shell 411. A plurality of heat conducting plates 413 are arranged in a linear array on the outer wall of the third heating plate 412. A first dehumidifying plate 41 is fixedly connected between the heating shell 411 and the inner wall of the ventilation duct 1. The heat conducting plates 413 penetrate through the heating shell 411 and extend into the first dehumidifying plate 41. A plurality of ventilation holes 414 are formed in the outer wall of the heating shell 411. The PLC controller is electrically connected to the second heating plate 410, the first heating plate 2211, and the third heating plate 412 to form a drying circuit. Among them, the excess heat is dissipated through the ventilation holes 414 to prevent the hot air from accumulating in the heating shell 411.

[0029] Among them, the first electric telescopic rod 225 and the second electric telescopic rod 47 are electrically connected to the PLC controller. Therefore, the first electric telescopic rod 225 and the second electric telescopic rod 47 are controlled by the PLC controller.

[0030] The working principle of the present invention is as follows: First, the wind detection component 21 is used to detect the wind force. The wind blows the wind wheel 213, which then drives the rotating rod 212 to rotate. Then, the rotating rod 212 drives the conductive plate to rotate to cut the magnetic induction lines between the N - level magnet 215 and the S - level magnet 216 (the principle of cutting magnetic induction lines). Then, the current monitoring module in the PLC controller monitors the current generated by cutting the magnetic induction lines. The greater the wind, the faster the magnetic induction lines are cut and the greater the generated current. Therefore, the wind speed is proportional to the current. The humidity detection component 22 is used to detect the humidity in the air. By controlling the first electric telescopic rod 225 to extend outwards, the moisture absorption detection plate 221 is extended. Then, the moisture absorption detection plate 221 adsorbs the moisture in the air. As the moisture is adsorbed, the weight of the moisture absorption detection plate 221 gradually increases, which then drives the conductive sheet 2210 to slide down on the surface of the resistance plate 229. The current calculation module in the PLC controller monitors and records the current transmitted by the resistance plate 229 in real time. When the current suddenly increases within a certain period of time, it means that the moisture is relatively large during that period. The rainwater detection component 23 is used to detect the rainfall. The rainwater is collected by the water receiving tank 232, and then a small amount of rainwater is slowly discharged through the thin drainage pipe 233. When the rainfall increases, the thin drainage pipe 233 is not fast enough to drain it. Then, the water level monitor 231 can monitor the water level change in real time and record it in real time. When the water level suddenly increases within a certain period of time, it means that the rainfall has increased during that period.

[0031] Through the above wind and rain detections, when strong wind is detected but no heavy rain, the PLC controller is used to control the driving motor 310 to start. Then, the driving motor 310 drives the rotating sealing plate 32 to rotate 90 degrees to seal the main air inlet channel 6, so that air enters from the secondary air inlet channel 7, preventing excessive air volume from entering the garage or cargo hold of the ro-ro ship, and avoiding the situation where excessive air volume may pose a risk to the stable operation of the ventilation system and even damage the ventilation ducts 1 and equipment; When heavy rain is detected but no strong wind, or when both heavy rain and strong wind coexist, it is necessary to seal the two ventilation channels. The reason is to prevent rainwater from entering the garage or cargo hold through the ventilation duct 1. The PLC controller is used to control the energization of the electromagnet 36 to adsorb the permanent magnet block 38, so that the permanent magnet block 38 disengages from the through hole 39. Due to the action of gravity, the lifting sealing plate 31 drops to block the secondary air inlet channel 7, and the main air inlet channel 6 is sealed according to the above operation, so that air enters the secondary air inlet channel 7 from the main air inlet channel 6 through the ventilation slot 44. At this time, the secondary air inlet channel 7 no longer admits air. When the wind passes through the ventilation slot 44, the moisture in the air is adsorbed by the second dehumidifying plate 42 or the third dehumidifying plate 43. Through the detection of the humidity detection component 22, since the moisture absorption detection plate 221 is made of the same material as the second dehumidifying plate 42 and the third dehumidifying plate 43, only the sizes are different, so when the moisture absorption detection plate 221 reaches the threshold during detection, the second dehumidifying plate 42 and the third dehumidifying plate 43 also reach the threshold. Therefore, when the moisture absorption of the moisture absorption detection plate 221 drives the conductive sheet 2210 to no longer slide downward on the resistance plate 229, the threshold is reached. Therefore, the PLC controller is used to control the electric telescopic rod to extend, and then push the second dehumidifying plate 42 or 43 to extend outward. Through the movement of the second dehumidifying plate 42 or 43, the rack 48 will be driven to move synchronously to rotate the gear 49, and then move the third dehumidifying plate 43 or 42 into the telescopic groove 45. At the same time, the PLC controller is used to control the second heating plate 410 to start, and then the second heating plate 410 dries the third dehumidifying plate 43 or the second dehumidifying plate 42 for subsequent use.

[0032] In the normal ventilation state, when the humidity detection component 22 detects that the humidity in the air is relatively high, the PLC controller is used to control the power of the third heating plate 412 to increase to raise the heating temperature, and then the heat is transferred to the first dehumidifying plate 41 through the heat conduction plate 413, so as to dry the moisture in the first dehumidifying plate 41 and keep the first dehumidifying plate 41 with the moisture absorption function.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind and rain sealing structure inside a ventilation duct, comprising a ventilation duct (1), characterized in that: Also includes: A detection mechanism (2), the detection mechanism (2) comprising a wind detection component (21) for detecting wind strength, a humidity detection component (22) for detecting air humidity, and a rain detection component (23) for detecting rain, the wind detection component (21) comprising a rotating structure that can be blown by wind, the other side of the rotating structure being used to cut magnetic flux lines to generate current, and detecting the magnitude of the current generated by cutting the magnetic flux lines, the humidity detection component (22) comprising a moisture absorption detection plate (221) for absorbing moisture, the outer wall of the moisture absorption detection plate (221) being fixedly connected to a fixed frame (222), the outer wall of the fixed frame (222) being slidably provided with a moving frame (223), the outer wall of the moving frame (223) and the fixed frame (222) being jointly provided with a sliding rheostat, and the rain detection component (23) comprising a water level monitor (231) for detecting the height of rain; A sealing mechanism (3), the sealing mechanism (3) comprising a lifting sealing plate (31) and a rotating sealing plate (32), the lifting sealing plate (31) and the rotating sealing plate (32) automatically sealing the ventilation duct (1) according to the detection mechanism (2); A dehumidification mechanism (4), the dehumidification mechanism (4) comprising a first dehumidification plate (41) for dehumidifying in a normal state, and a second dehumidification plate (42) and a third dehumidification plate (43) for dehumidifying in turn in a strong wind state.

2. A ventilation duct internal wind and rain sealing structure according to claim 1, characterized in that: A partition plate (5) is fixedly connected to the inner wall of the ventilation duct (1), and the partition plate (5) divides the ventilation duct into a main air inlet channel (6) and a secondary air inlet channel (7) at the top and bottom. The wind force detection component (21) and the humidity detection component (22) are both arranged in the main air inlet channel (6).

3. A ventilation duct internal wind and rain sealing structure according to claim 2, characterized in that: The wind force detection assembly (21) further comprises a wind force detection box (211) fixedly connected to the top of the partition (5); the rotating structure comprises a rotating rod (212) rotating through the wind force detection box (211); a wind wheel (213) is fixedly connected to the outer wall of the rotating rod (212); a conductive rod (214) is fixedly connected to the outer wall near the other end of the rotating rod (212); an N-grade magnet (215) and an S-grade magnet (216) are fixedly connected to the inner wall of the wind force detection box (211); the conductive rod (214) is located between the N-grade magnet (215) and the S-grade magnet (216) and is parallel to each other; and the conductive rod (214) is electrically connected to a PLC controller to form a wind force detection circuit.

4. A ventilation duct internal wind and rain sealing structure according to claim 3, characterized in that: The humidity detection assembly (22) comprises a drying box (224) fixedly connected to the top of the partition (5); a first electric telescopic rod (225) is fixedly connected to the inner wall of the drying box (224); the telescopic end of the first electric telescopic rod (225) is fixedly connected to the moving frame (223); a slide groove (226) is provided on the inner wall of the opposite side of the moving frame (223); a slider (227) is slidably connected to the inner wall of the slide groove (226); a first spring (228) is fixedly connected to the bottom end of the slider (227) and the top end of the slider (226); and a spring (228) is fixedly connected between the two sliders (227). The sliding rheostat comprises a resistor plate (229) fixedly connected to the inner wall of one of the slide slots (226); the outer wall of the slider (227) is fixedly connected to a conductive sheet (2210) in sliding contact with the resistor plate (229); the PLC controller is electrically connected to the sliding rheostat to form a humidity detection circuit; the resistance of the humidity detection circuit gradually decreases during the downward sliding of the conductive sheet (2210) on the resistor plate (229); and the inner wall of the drying box (224) is fixedly connected to two symmetrical first heating plates (2211).

5. A ventilation duct internal wind and rain sealing structure according to claim 4, characterized in that: The rainwater detection component (23) comprises a water receiving box (232) fixedly connected to the top of the ventilation duct (1); the inner bottom wall of the water receiving box (232) is fixedly connected to a water level monitor (231); the outer walls on both sides of the water receiving box (232) are respectively connected to a thin drainage pipe (233) and a thick drainage pipe (234); the water level monitor (231) is electrically signal-connected to a PLC controller to form a precipitation detection circuit.

6. A ventilation duct internal wind and rain sealing structure according to claim 2, characterized in that: The sealing mechanism (3) comprises a sliding groove (33) provided at the top end of the ventilation duct (1); a clamping groove (34) which is connected to and vertically corresponds to the sliding groove (33) is provided at the top end of the partition plate (5); the inner wall of the sliding groove (33) is airtightly slidably connected to the outer wall of the lifting sealing plate (31); the bottom end of the lifting sealing plate (31) can contact the clamping groove (34); the inner wall of the sliding groove (33) is provided with a moving groove (35); the inner wall of the moving groove (35) is fixedly connected to an electromagnet (36) and two symmetrical second springs (37); the other end of the second spring (37) is A permanent magnet block (38) magnetically attracted to the electromagnet (36) is fixedly connected together; the outer wall of the lifting sealing plate (31) is provided with a through hole (39) engaged with the permanent magnet block (38); the outer wall of the ventilation duct (1) is fixedly connected to a driving motor (310); the output end of the driving motor (310) is fixedly connected to the outer wall of the rotating sealing plate (32); the bottom end of the lifting sealing plate (31) is fixedly connected to a push rod (311); the other end of the push rod (311) slides through the card slot (34), extends into the main air inlet channel (6), and can contact the outer wall of the rotating sealing plate (32).

7. A ventilation duct internal wind and rain sealing structure according to claim 3, characterized in that: The dehumidification mechanism (4) comprises a ventilation slot (44) provided on the outer wall of the partition (5), the ventilation slot (44) being located between the rotating sealing plate (32) and the push rod (311), the inner wall of the ventilation slot (44) being provided with two symmetrical telescopic slots (45), a connecting slot (46) being provided between the two telescopic slots (45), the inner wall of the upper telescopic slot (45) being fixedly connected with a second electric telescopic rod (47), the telescopic end of the second electric telescopic rod (47) being connected to the first telescopic rod (47) and the second telescopic end of the second electric telescopic rod (47) being connected to the first telescopic rod (47). The two dehumidification plates (42) are fixedly connected, and the inner wall of the telescopic groove (45) at the bottom is slidably connected to the third dehumidification plate (43). The bottom end of the second dehumidification plate (42) and the top end of the third dehumidification plate (43) are fixedly connected to a toothed plate (48), and the inner wall of the connecting groove (46) is rotatably connected to a gear (49) meshing with the toothed plate (48). The top end of the telescopic groove (45) at the top and the bottom end of the telescopic groove (45) at the bottom are fixedly connected to a second heating plate (410).

8. A ventilation duct internal wind and rain sealing structure according to claim 7, characterized in that: A heating shell (411) is fixedly connected to the main air inlet channel (6) and the secondary air inlet channel (7); a third heating plate (412) is fixedly connected to the inner wall of the heating shell (411); a plurality of heat conducting plates (413) are arranged in a linear array on the outer wall of the third heating plate (412); a first dehumidification plate (41) is fixedly connected to the inner wall of the heating shell (411) and the ventilation duct (1); the heat conducting plate (413) penetrates the heating shell (411) and extends into the first dehumidification plate (41); a plurality of ventilation holes (414) are provided on the outer wall of the heating shell (411); and the PLC controller is connected to the second heating plate (410), the first heating plate (2211), and the third heating plate (412) via electrical signals to form a drying circuit.

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