A wind duct structure for preventing rainwater from flowing back

Abstract

The present invention relates to an air duct structure for preventing rainwater from backflowing, and belongs to the technical field of air conditioning. The air duct structure for preventing rainwater from backflowing comprises a first air duct and a sealing pad fixedly connected between the first air duct and the wall mounting end, and further comprises: a water removal cylinder; a water catching mechanism; a drainage mechanism; a water removal mechanism; and a deformation blowing mechanism. The present invention can capture the moisture in the air containing moisture entering the water removal cylinder and capture the dust in the air by setting the water catching mechanism, thereby purifying the air while capturing the moisture in the air, and the captured moisture and dust will flow downward along the outer surface of the water catching mechanism and be discharged to the outside through the drainage pipe, thereby reducing the water content of the moisture in the air entering the room, improving the anti-backflow performance of the air duct structure, and ensuring the cleanliness of the air, thereby avoiding the leakage of the indoor ceiling and the relatively humid indoor situation, ensuring the comfort of the indoor environment, and avoiding safety hazards.

Description

Technical Field

[0001] The invention belongs to the technical field of air conditioning, and in particular relates to an air duct structure for preventing rainwater from flowing back. Background Art

[0002] The air duct is a piping system used for air transportation and distribution. It plays an important role in air conditioning systems, ventilation systems, industrial exhaust systems, etc.; the air duct can be divided into circular air duct, rectangular air duct, etc. according to the cross-sectional shape; it can be divided into metal air duct (such as galvanized iron air duct, stainless steel air duct), composite air duct (such as phenolic aluminum foil composite air duct, inorganic glass air duct), etc. according to the material.

[0003] At present, the air ducts on the outer wall often flow along the air ducts into the ceiling mezzanine or remain in the air ducts on rainy days, and the air containing rain will also enter the room along the air ducts, thereby causing water leakage in the indoor ceiling, causing certain safety hazards, and also causing the room to be more humid, affecting the comfort of the indoor environment. Based on this, an air duct structure for preventing rainwater backflow is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a reasonably designed air duct structure for preventing rainwater backflow in order to solve the above-mentioned problem.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] An air duct structure for preventing rainwater from flowing back includes a first air duct and a sealing pad fixedly connected between the first air duct and a wall mounting end, and further includes:

[0007] A water removal cylinder, the water removal cylinder is fixedly connected to the first air duct and is internally communicated with the first air duct, and a drain pipe is fixedly connected to the bottom of the water removal cylinder;

[0008] A water catching mechanism, which is installed in the water removal cylinder and is used to catch moisture in the air flowing through the interior of the water removal cylinder;

[0009] A drainage mechanism, which is installed at the bottom of the water-catching mechanism and is located in the drainage pipe, and is used to dredge the drainage pipe;

[0010] A water removal mechanism, which is installed in the water capture mechanism and is used to remove moisture from the air captured by the water capture mechanism;

[0011] The deformation blowing mechanism is installed in the water removal mechanism and is used to drive the water removal mechanism to work.

[0012] As a further optimization scheme of the present invention, the side wall of the dewatering cylinder is fixedly connected to a second air duct, a water guide plate is fixedly connected inside the second air duct, and the water guide plate is inclined, and the inclination direction is toward the end of the second air duct away from the dewatering cylinder, and a water guide plate is fixedly connected inside the first air duct, the water guide plate is arranged at one end of the first air duct close to the sealing gasket, and the water guide plate is inclined downward, and is used to drain water leaking from the first air duct and the wall installation portion into the dewatering cylinder.

[0013] As a further optimization scheme of the present invention, the water catching mechanism includes a motor installed in the middle position of the top of the water removal cylinder, the output end of the motor is fixedly connected to a rotating shaft, the outer surface of the rotating shaft is fixedly connected to a water catching frame, the side wall of the water catching frame is provided with a plurality of square grooves, a plurality of the square grooves are provided with grooves, a plurality of the square grooves are provided with two first fog catching nets, the top of one of the first fog catching nets is fixedly connected to the inner top of the square groove, the bottom of the other first fog catching net is fixedly connected to the inner bottom of the square groove, the adjacent sides of the two first fog catching nets are fixedly connected to sliding rods, the adjacent sides of the two sliding rods are fixedly connected to second fog catching nets, and the bottom of the water catching frame is fixedly connected to a wiper rod.

[0014] As a further optimization scheme of the present invention, the rotating shaft passes through the top of the dewatering cylinder and is rotatably connected to the dewatering cylinder, the end of the sliding rod is slidably connected to the inner surface of the groove, the two sides of the first fog catching net are located in the groove, the two sides of the second fog catching net are located in the groove, and the second fog catching net is located in the middle position of the groove and is fixedly connected to the groove, and the wiper rod is in contact with the inner surface of the dewatering cylinder.

[0015] As a further optimization scheme of the present invention, the drainage mechanism includes a fixed gear fixedly connected to the top of the water removal barrel, the outer surface of the fixed gear is meshed with a transmission gear, the bottom of the transmission gear is fixedly connected to a transmission shaft, the outer surface of the transmission shaft is fixedly connected to a first bevel gear, the bottom of the transmission shaft is fixedly connected to a reciprocating screw, the outer surface of the reciprocating screw is threadedly connected to a lifting ring, the bottom of the lifting ring is fixedly connected to a connecting rod, the bottom of the connecting rod is fixedly connected to a drainage spiral plate, the inner surface of the drainage spiral plate is fixedly connected to a limiting rod, a limiting groove is provided at the bottom position of the outer surface of the rotating shaft, and the limiting rod is slidably connected to the limiting groove.

[0016] As a further optimization scheme of the present invention, the fixed gear is rotatably connected to the rotating shaft, the transmission shaft passes through the water collecting frame and is rotatably connected to the water collecting frame, the inner surface of the drainage spiral plate is slidably connected to the outer surface of the rotating shaft, and the drainage spiral plate is located in the drain pipe.

[0017] As a further optimization scheme of the present invention, the dewatering mechanism includes a dewatering box fixedly connected in the water catching frame, a fixed pipe is fixedly connected to the middle position of a side of the dewatering box close to the second fog catching net, an end of the fixed pipe away from the dewatering box is fixedly connected to a limiting plate, a sliding groove is provided at the edge of the limiting plate, and a through hole is provided on one side of the fixed pipe of the dewatering box.

[0018] As a further optimization scheme of the present invention, the second mist catching net is divided into two parts by a limiting plate, the adjacent side edge portions of the second mist catching net of the two parts are located in the slide groove, and the middle portions of the adjacent side edge portions of the second mist catching net of the two parts are fixedly connected to the middle portion of the slide groove, and the sliding rod is located in the slide groove and is slidably connected to the slide groove.

[0019] As a further optimization scheme of the present invention, the deformation blowing mechanism includes a second bevel gear meshing with the first bevel gear, a rotating rod is fixedly connected to one side of the second bevel gear, the outer surface of the rotating rod is threadedly connected to a piston plate, a connecting rope is fixedly connected to the side of the piston plate close to the first fog catching net, and an end of the connecting rope away from the piston plate is fixedly connected to two sliding rods on the upper and lower sides of the second fog catching net.

[0020] As a further optimization scheme of the present invention, the rotating rod passes through the water removal tank and is rotatably connected to the water removal tank. The part of the rotating rod located in the water removal tank is configured as a reciprocating screw. The outer surface of the piston plate is sealingly and slidably connected to the inner surface of the water removal tank. The connecting rope passes through the side wall of the fixed tube and is sealingly and slidably connected to the fixed tube. The end of the rotating rod is rotatably connected to the limit plate.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention can capture moisture in the air containing moisture entering the dewatering cylinder and capture dust in the air by setting a water-capturing mechanism, thereby achieving air purification while capturing moisture in the air, and the captured moisture and dust will flow downward along the outer surface of the water-capturing mechanism and be discharged outward through a drain pipe, thereby reducing the water content of the air entering the room, improving the anti-backflow performance of the air duct structure, ensuring the cleanliness of the air, thereby avoiding water leakage in the indoor ceiling and relatively humid indoor conditions, ensuring the comfort of the indoor environment, and avoiding safety hazards.

[0023] 2. The present invention uses an inclined water guide plate and an inclined water diversion plate in coordination. When air containing moisture enters the second air duct, the inclined water guide plate can slow down the speed of air entering the dewatering cylinder through the second air duct, so that more moisture in the air can adhere to the outer surface of the water guide plate. At the same time, the inclined water guide plate can facilitate the discharge of water attached to the second air duct, thereby reducing the humidity in the air duct structure, and the inclined water diversion plate can divert water leaked from the first air duct and the wall installation portion into the dewatering cylinder. The inclined water diversion plate facilitates the circulation of indoor air and prevents water leaked from the first air duct and the wall installation portion from flowing into the room.

[0024] 3. The present invention uses a water-catching mechanism and a drainage mechanism in coordination. When the water-catching mechanism is working, it will drive the drainage mechanism to work, so that the drainage mechanism moves up and down during the process of rotating and draining water, and pushes the dust in the air captured by the water-catching mechanism out of the drainage pipe, thereby avoiding blockage of the drainage pipe, so that the water flow in the dewatering cylinder can be discharged in time, and the humidity in the dewatering cylinder is reduced, thereby improving the quality and efficiency of the water-catching mechanism in capturing moisture in the air. In addition, through the arrangement of the drainage spiral plate, when the water-catching mechanism is not in a rotating state, the speed at which the air containing moisture enters the dewatering cylinder through the drainage pipe can be slowed down, thereby further improving the anti-backflow performance of the air duct structure.

[0025] 4. The present invention uses a dewatering mechanism and a deformation blowing mechanism in coordination. When the drainage mechanism rotates, the deformation blowing mechanism can be operated. On the one hand, the connecting rope is used to pull the slide bar to slide into the groove, so that the first mist catching net and the second mist catching net are deformed, and the apertures of the first mist catching net and the second mist catching net are changed, so that the apertures of the first mist catching net and the second mist catching net are intermittently enlarged and reduced. The smaller the mesh size, the more mesh size per unit area, thereby increasing the chance of water contacting the net surface, improving the capture efficiency, and increasing the contact area between dust and the net surface, thereby capturing more dust. At the same time, due to the first mist catching net and the second mist catching net When deformation occurs, the moisture and dust captured by the first mist catching net and the second mist catching net will be gathered, and will be vibrated and separated from the first mist catching net and the second mist catching net under the action of deformation, so that the first mist catching net and the second mist catching net can capture more moisture and dust. On the other hand, the dehydration mechanism will blow air to the first mist catching net and the second mist catching net to blow droplets formed by the accumulation of moisture and dust off the outer surfaces of the first mist catching net and the second mist catching net, further improving the capture efficiency and capture quality of moisture and dust by the first mist catching net and the second mist catching net, thereby further improving the anti-backflow performance of the air duct structure and ensuring the cleanliness of the air entering the room. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the present invention cut away from the middle of the front side;

[0028] Figure 3 The present invention Figure 2 The enlarged structural diagram at A in the middle;

[0029] Figure 4 The present invention Figure 2 The enlarged structural diagram at B in the middle;

[0030] Figure 5 It is a schematic diagram of the structure of the fog catching net of the present invention;

[0031] Figure 6 It is a schematic diagram of the top cutaway structure of the present invention;

[0032] Figure 7 The present invention Figure 6 The enlarged structural diagram at C in the middle;

[0033] Figure 8 The present invention Figure 6 The enlarged structural diagram at D in the middle;

[0034] Fig. 9 It is a schematic diagram of a three-dimensional partially cutaway structure viewed from above of the present invention;

[0035] Fig.10 The present invention Fig. 9 The enlarged structural diagram at E in the middle;

[0036] Fig.11 It is a schematic diagram of a three-dimensional partially cutaway structure of a water-catching frame of the present invention;

[0037] Fig.12 It is a three-dimensional partially cutaway back structural schematic diagram of the water removal mechanism of the present invention;

[0038] Fig.13 It is a three-dimensional partially cutaway front structural schematic diagram of the water removal mechanism of the present invention.

[0039] In the figure: 1, first air duct; 2, sealing pad; 3, water removal cylinder; 4, second air duct; 5, water guide plate; 6, water guide plate; 7, water catching mechanism; 701, motor; 702, rotating shaft; 703, water catching frame; 704, groove; 705, first fog catching net; 706, sliding rod; 707, second fog catching net; 708, wiper rod; 8, drainage mechanism; 801, fixed gear; 802, transmission gear; 803, transmission shaft; 804, first bevel gear Wheel; 805, reciprocating screw; 806, lifting ring; 807, connecting rod; 808, drainage spiral plate; 809, limiting rod; 8010, limiting groove; 9, water removal mechanism; 901, water removal tank; 902, fixed pipe; 903, limiting plate; 904, slide groove; 905, through hole; 10, deformation blowing mechanism; 1001, second bevel gear; 1002, rotating rod; 1003, piston plate; 1004, connecting rope; 11, drainage pipe. DETAILED DESCRIPTION

[0040] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0041] Example: Figure 1 , Figure 2 , Figure 6 and Fig. 9As shown, an air duct structure for preventing rainwater from backflowing includes a first air duct 1 and a sealing gasket 2 fixedly connected to the first air duct 1 and the wall mounting end. The setting of the sealing gasket 2 can reduce the amount of rainwater leaking into the first air duct 1 through the first air duct 1 and the wall mounting portion. The structure also includes: a dewatering cylinder 3, which is fixedly connected to the first air duct 1 and is internally connected. The bottom of the dewatering cylinder 3 is fixedly connected to a drain pipe 11, and the side wall of the dewatering cylinder 3 is fixedly connected to a second air duct 4. A water guide plate 5 is fixedly connected inside the second air duct 4, and there is a distance between the bottom of the water guide plate 5 and the inner bottom of the second air duct 4. The water guide plates 5 are arranged in plurality, and the water guide plates 5 are arranged obliquely, with the inclination direction toward the end of the second air duct 4 away from the dewatering cylinder 3. The inclined water guide plates 5 can slow down the flow of rainwater through the second air duct 4. The speed of air entering the dewatering cylinder 3 is increased, so that the moisture in the air can be more attached to the outer surface of the water guide plate 5. At the same time, the inclined water guide plate 5 can facilitate the discharge of water attached to the second air duct 4 and the outer surface of the water guide plate 5. A water guide plate 6 is fixedly connected to the first air duct 1. There are multiple water guide plates 6. There is partial overlap between the multiple water guide plates 6, so as to further prevent rainwater from dripping directly on the inner bottom of the first air duct 1. The water guide plate 6 is arranged at one end of the first air duct 1 close to the sealing gasket 2, and the water guide plate 6 is inclined downward, which is used to drain the water leaking from the first air duct 1 and the wall installation part into the dewatering cylinder 3. The inclined water guide plate 6 facilitates the circulation of indoor air and prevents the water leaking from the first air duct 1 and the wall installation part from flowing into the room.

[0042] When in use, one end of the first air duct 1 with the sealing gasket 2 is installed on the installation position of the wall air duct through bolts. When the sealing gasket 2 is fatigued due to long-term use, rainwater on rainy days will leak through the sealing gasket 2 into the installation position of the first air duct 1 and the wall air duct. At this time, the rainwater will fall on the inclined water guide plate 6. The leaked rainwater is gradually guided into the first air duct 1 through multiple water guide plates 6, avoiding rainwater from directly falling on the installation position of the first air duct 1 and the wall air duct, causing rainwater to enter the room. In addition, even if the existing air duct is tilted as a whole, the direct dripping of rainwater will cause splashing, causing the splashed rainwater to enter the room, while the present embodiment The arrangement of multiple water guide plates 6 will prevent rainwater from splashing into the room. During normal use, when the air containing moisture generated on rainy days flows into the dewatering cylinder 3 through the second air duct 4, the speed of the air entering the dewatering cylinder 3 through the second air duct 4 can be slowed down by the inclined water guide plate 5, so that more moisture in the air can adhere to the outer surface of the water guide plate 5. When water is attached to the inner surface of the second air duct 4 and the outer surface of the water guide plate 5, the water will flow to the end of the second air duct 4 away from the dewatering cylinder 3 under the action of the inclined water guide plate 5, thereby facilitating the discharge of moisture and reducing the amount of moisture-containing air flowing back into the room.

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Fig. 9 , Fig.11 , Fig.12 and Fig.13 As shown, the wind duct structure for preventing rainwater from backflowing also includes: a water catching mechanism 7, which is installed in the water removing cylinder 3 and is used to capture moisture in the air flowing through the inside of the water removing cylinder 3. The water catching mechanism 7 includes a motor 701 installed in the middle position of the top of the water removing cylinder 3, and the output end of the motor 701 is fixedly connected to a rotating shaft 702, and the outer surface of the rotating shaft 702 is fixedly connected to a water catching frame 703, and the side wall of the water catching frame 703 is provided with a plurality of square grooves, and a groove 704 is provided in each of the plurality of square grooves, and two first mist catching nets 705 are arranged in each of the plurality of square grooves, wherein the top of one of the first mist catching nets 705 is fixedly connected to the inner top of the square groove, and the bottom of the other first mist catching net 705 is fixedly connected to the inner bottom of the square groove. Then, the adjacent sides of the two first mist catching nets 705 are fixedly connected with sliding rods 706, the adjacent sides of the two sliding rods 706 are fixedly connected with the second mist catching net 707, the bottom of the water catching frame 703 is fixedly connected with a wiper rod 708, the rotating shaft 702 passes through the top of the dewatering cylinder 3 and is rotatably connected to the dewatering cylinder 3, the end of the sliding rod 706 is slidably connected to the inner surface of the groove 704, the two sides of the first mist catching net 705 are located in the groove 704, the two sides of the second mist catching net 707 are located in the groove 704, and the second mist catching net 707 is located in the middle position of the groove 704 and is fixedly connected to the groove 704, the wiper rod 708 fits with the inner surface of the dewatering cylinder 3, and the first mist catching net 705 and the second mist catching net 707 are both elastic.

[0044] When used on rainy days, the motor 701 is started to make the rotating shaft 702 drive the water catching frame 703 to rotate, thereby making the first mist catching net 705 and the second mist catching net 707 rotate to capture the moisture and dust in the air flowing into the dewatering cylinder 3 through the second air duct 4, and at the same time, the wiper rod 708 is rotated along the inner bottom of the dewatering cylinder 3 to scrape the moisture and dust captured by the first mist catching net 705 and the second mist catching net 707 from the inner bottom of the dewatering cylinder 3, thereby capturing the moisture in the moisture-containing air entering the dewatering cylinder 3. , and at the same time, dust in the air is captured, and the air is purified while capturing moisture in the air. The captured moisture and dust will flow downward along the outer surface of the first mist capture net 705 and the second mist capture net 707, and be discharged to the outside through the drain pipe 11, thereby reducing the moisture content in the air entering the room, improving the anti-backflow performance of the air duct structure, ensuring the cleanliness of the air, thereby avoiding indoor ceiling leakage and relatively humid indoor conditions, ensuring the comfort of the indoor environment, and avoiding safety hazards.

[0045] like Figure 3 , Fig.10 , Fig.11 , Fig.12 and Fig.13 As shown, the wind duct structure for preventing rainwater backflow also includes: a drainage mechanism 8, which is installed at the bottom of the water-catching mechanism 7 and is located in the drainage pipe 11. The drainage mechanism 8 is used to dredge the drainage pipe 11. The drainage mechanism 8 includes a fixed gear 801 fixedly connected to the top of the water-removing cylinder 3, and the outer surface of the fixed gear 801 is meshed with a transmission gear 802. The bottom of the transmission gear 802 is fixedly connected to a transmission shaft 803, and the outer surface of the transmission shaft 803 is fixedly connected to a first bevel gear 804. The bottom of the transmission shaft 803 is fixedly connected to a reciprocating screw 805, and the outer surface of the reciprocating screw 805 is threadedly connected to a lifting gear. Ring 806, the bottom of the lifting ring 806 is fixedly connected with a connecting rod 807, the bottom of the connecting rod 807 is fixedly connected with a drainage spiral plate 808, the inner surface of the drainage spiral plate 808 is fixedly connected with a limiting rod 809, a limiting groove 8010 is provided at the bottom position of the outer surface of the rotating shaft 702, the limiting rod 809 is slidably connected with the limiting groove 8010, the fixed gear 801 is rotationally connected with the rotating shaft 702, the transmission shaft 803 passes through the water catching frame 703 and is rotationally connected with the water catching frame 703, the inner surface of the drainage spiral plate 808 is slidably connected with the outer surface of the rotating shaft 702, and the drainage spiral plate 808 is located in the drain pipe 11.

[0046] When in use, the rotation of the water-catching frame 703 will drive the transmission shaft 803 to revolve, and at this time, the transmission shaft 803 will rotate by the action of the transmission gear 802 and the fixed gear 801, so that the transmission shaft 803 will rotate while revolving, and the reciprocating screw 805 will rotate while revolving, and in this process, the drainage spiral plate 808 will rotate with the rotation of the rotating shaft 702 under the action of the limiting rod 809 and the limiting groove 8010, and the rotation of the reciprocating screw 805 will make the lifting ring 806 move up and down under the action of the outer surface thread of the reciprocating screw 805, and then drive the drainage spiral plate 808 to move in the limit rod 809 through the connecting rod 807. 09 and the limiting groove 8010 move up and down, and push the dust in the air captured by the first mist catching net 705 and the second mist catching net 707 into the drain pipe 11, avoiding the blockage of the drain pipe 11, so that the water flow in the dewatering cylinder 3 can be discharged in time, reducing the humidity in the dewatering cylinder 3, thereby improving the first mist catching net 705 and the second mist catching net 707 to capture the moisture in the air The quality and efficiency of capturing, and through the setting of the drainage spiral plate 808, when the water catching mechanism 7 is not in a rotating state, it can slow down the speed of the air containing moisture entering the dewatering cylinder 3 through the drain pipe 11, thereby further improving the anti-backflow performance of the air duct structure.

[0047] like Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Fig.11 , Fig.12 and Fig.13 As shown, the wind duct structure for preventing rainwater backflow also includes: a water removal mechanism 9, which is installed in the water capture mechanism 7 and is used to remove moisture from the air captured by the water capture mechanism 7. The water removal mechanism 9 includes a water removal box 901 fixedly connected to the water capture frame 703, and a fixed pipe 902 is fixedly connected to the middle position of one side of the water removal box 901 close to the second fog capture net 707. The end of the fixed pipe 902 away from the water removal box 901 is fixedly connected to a limiting plate 903, and a slide groove 904 is provided at the edge of the limiting plate 903. Fig.12As shown, a cross bar is fixedly connected to the middle position of the limiting plate 903. Except for the cross bar, the other internal parts of the limiting plate 903 are all slide grooves 904. A through hole 905 is provided on one side of the fixed pipe 902 of the water removal tank 901. The through hole 905 is arranged opposite to the first mist catching net 705 and the second mist catching net 707. The second mist catching net 707 is divided into two parts by the limiting plate 903. The adjacent side edge parts of the second mist catching net 707 of the two parts are located in the slide groove 904, and the middle positions of the adjacent side edge parts of the second mist catching net 707 of the two parts are fixedly connected to the middle position of the slide groove 904. The slide bar 706 is located in the slide groove 904 and is slidably connected to the slide groove 904. The deformation blowing mechanism 10 is installed in the dewatering mechanism 9 to drive the dewatering mechanism 9 to work. The deformation blowing mechanism 10 includes a first bevel gear 804 meshing with the first bevel gear 804. The second bevel gear 1001 is fixedly connected to a rotating rod 1002 on one side of the second bevel gear 1001, and a piston plate 1003 is threadedly connected to the outer surface of the rotating rod 1002, and a connecting rope 1004 is fixedly connected to the side of the piston plate 1003 close to the first mist catching net 705, and one end of the connecting rope 1004 away from the piston plate 1003 is fixedly connected to two sliding rods 706 on the upper and lower sides of the second mist catching net 707, the rotating rod 1002 passes through the dewatering tank 901 and is rotatably connected to the dewatering tank 901, the part of the rotating rod 1002 located in the dewatering tank 901 is arranged in the form of a reciprocating screw, the outer surface of the piston plate 1003 is sealingly and slidably connected to the inner surface of the dewatering tank 901, the connecting rope 1004 passes through the side wall of the fixed tube 902 and is sealingly and slidably connected to the fixed tube 902, and the end of the rotating rod 1002 is rotatably connected to the limit plate 903.

[0048] When in use, the rotation of the transmission shaft 803 will drive the first bevel gear 804 to rotate, and then drive the rotating rod 1002 to rotate, so that the piston plate 1003 moves back and forth in the water removal box 901, so that the water removal box 901 is evacuated and exhausted through the through hole 905, and the sliding rod 706 is pulled back and forth by the connecting rope 1004 to slide into the sliding groove 904, so that the first mist catching net 705 and the second mist catching net 707 are deformed, and because the first mist catching net 705 and the second mist catching net 707 themselves have elasticity, the first mist catching net 705 and the second mist catching net 707 are reciprocated. The aperture of the first mist catching net 705 and the second mist catching net 707 is changed, so that the aperture of the first mist catching net 705 and the second mist catching net 707 intermittently increases and decreases. The smaller the mesh size, the more mesh size per unit area, thereby increasing the chance of water contacting the net surface, improving the capture efficiency, and And the contact area between the dust and the net surface is increased, so as to capture more dust. At the same time, due to the deformation of the first mist catching net 705 and the second mist catching net 707, the moisture and dust captured by the first mist catching net 705 and the second mist catching net 707 will be gathered, and vibrated and detached from the first mist catching net 705 and the second mist catching net 707 under the action of the deformation, so that the first mist catching net 705 and the second mist catching net 707 can capture more moisture and dust. On the other hand, the dehydration mechanism 9 will blow air toward the first mist catching net 705 and the second mist catching net 707 to blow droplets formed by the accumulation of moisture and dust from the outer surface of the first mist catching net 705 and the second mist catching net 707, further improving the capture efficiency and capture quality of moisture and dust by the first mist catching net 705 and the second mist catching net 707, thereby further improving the anti-backflow performance of the air duct structure and ensuring the cleanliness of the air entering the room.

[0049] The specific working principle of the present invention is as follows: when in use, one end of the first air duct 1 with the sealing gasket 2 installed is installed at the installation position of the wall air duct through bolts. When the sealing gasket 2 is sealed due to long-term use, rainwater on rainy days will leak through the sealing gasket 2 into the installation position of the first air duct 1 and the wall air duct. At this time, the rainwater will fall on the inclined water guide plate 6. The leaked rainwater is guided step by step into the first air duct 1 through multiple water guide plates 6, avoiding rainwater from directly falling on the installation position of the first air duct 1 and the wall air duct, causing rainwater to enter the room. Under normal circumstances, When in use, when the air containing moisture generated on rainy days flows into the dewatering cylinder 3 through the second air duct 4, the speed of the air entering the dewatering cylinder 3 through the second air duct 4 can be slowed down by the inclined water guide plate 5, so that more moisture in the air can adhere to the outer surface of the water guide plate 5. When water adheres to the inner surface of the second air duct 4 and the outer surface of the water guide plate 5, the water will flow to the end of the second air duct 4 away from the dewatering cylinder 3 under the action of the inclined water guide plate 5, so as to facilitate the discharge of moisture and reduce the amount of air containing moisture flowing back into the room.

[0050] When used in rainy or foggy days or in environments with high humidity, the motor 701 is started to make the rotating shaft 702 drive the water catching frame 703 to rotate, thereby making the first mist catching net 705 and the second mist catching net 707 rotate to capture the moisture and dust in the air flowing into the dewatering cylinder 3 through the second air duct 4, and at the same time, the wiper rod 708 is rotated along the inner bottom of the dewatering cylinder 3 to scrape the moisture and dust captured by the first mist catching net 705 and the second mist catching net 707 from the inner bottom of the dewatering cylinder 3, thereby achieving the purpose of removing moisture from the air containing moisture entering the dewatering cylinder 3. The first mist capture net 705 and the second mist capture net 707 are used to capture the moisture in the air and the dust in the air. The air is purified while the moisture in the air is captured. The captured moisture and dust flow downward along the outer surface of the first mist capture net 705 and the second mist capture net 707 and are discharged outward through the drain pipe 11, thereby reducing the moisture content of the air entering the room, improving the anti-backflow performance of the air duct structure, ensuring the cleanliness of the air, thereby avoiding the leakage of the indoor ceiling and the relatively humid indoor situation, ensuring the comfort of the indoor environment, and avoiding safety hazards.

[0051] At the same time, the rotation of the water-catching frame 703 will drive the transmission shaft 803 to revolve, and at this time the transmission shaft 803 will rotate by the action of the transmission gear 802 and the fixed gear 801, so that the transmission shaft 803 will rotate while revolving, and the reciprocating screw 805 will rotate while revolving, and in this process, the drainage spiral plate 808 will rotate with the rotation of the rotating shaft 702 under the action of the limiting rod 809 and the limiting groove 8010, and the rotation of the reciprocating screw 805 will make the lifting ring 806 move up and down under the action of the outer surface thread of the reciprocating screw 805, and then drive the drainage spiral plate 808 to move in the limit rod 809 through the connecting rod 807. 09 and the limiting groove 8010 move up and down, push the dust in the air captured by the first mist catching net 705 and the second mist catching net 707 out of the drain pipe 11, avoid the blockage of the drain pipe 11, so that the water flow in the dewatering cylinder 3 can be discharged in time, reduce the humidity in the dewatering cylinder 3, thereby improving the capture quality and capture efficiency of the first mist catching net 705 and the second mist catching net 707 for moisture in the air, and through the setting of the drainage spiral plate 808, when the water catching mechanism 7 is not in a rotating state, it can slow down the speed of the air containing moisture entering the dewatering cylinder 3 through the drain pipe 11, thereby further improving the anti-backflow performance of the air duct structure;

[0052] And the rotation of the transmission shaft 803 will drive the first bevel gear 804 to rotate, and then drive the rotating rod 1002 to rotate, so that the piston plate 1003 moves back and forth in the water removal box 901, so that the water removal box 901 is evacuated and exhausted through the through hole 905, and the sliding rod 706 is pulled back and forth by the connecting rope 1004 to slide into the sliding groove 904, so that the first mist catching net 705 and the second mist catching net 707 are deformed, and because the first mist catching net 705 and the second mist catching net 707 themselves have elasticity, the first mist catching net 705 and the second mist catching net 707 are deformed back and forth, on the one hand, the aperture of the first mist catching net 705 and the second mist catching net 707 is changed, so that the aperture of the first mist catching net 705 and the second mist catching net 707 intermittently increases and decreases, and the smaller the mesh size, the more mesh size per unit area, thereby increasing the chance of water contacting the net surface and improving the capture efficiency, and The contact area between the dust and the net surface is increased, thereby capturing more dust. At the same time, due to the deformation of the first mist catching net 705 and the second mist catching net 707, the moisture and dust captured by the first mist catching net 705 and the second mist catching net 707 will be gathered, and vibrated and detached from the first mist catching net 705 and the second mist catching net 707 under the action of the deformation, so that the first mist catching net 705 and the second mist catching net 707 can capture more moisture and dust. On the other hand, the dehydration mechanism 9 will blow air toward the first mist catching net 705 and the second mist catching net 707 to blow droplets formed by the accumulation of moisture and dust off the outer surface of the first mist catching net 705 and the second mist catching net 707, further improving the capture efficiency and capture quality of moisture and dust by the first mist catching net 705 and the second mist catching net 707, thereby further improving the anti-backflow performance of the air duct structure and ensuring the cleanliness of the air entering the room.

[0053] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. An air duct structure for preventing rainwater from flowing back, comprising a first air duct (1) and a sealing pad (2) fixedly connected between the first air duct (1) and a wall mounting end, characterized in that: Also includes: A water removal cylinder (3), the water removal cylinder (3) being fixedly connected to the first air duct (1) and being internally communicated with the first air duct (1), and the bottom of the water removal cylinder (3) being fixedly connected to a drainage pipe (11); A water catching mechanism (7), the water catching mechanism (7) being installed in the dewatering cylinder (3) and used for catching moisture in the air flowing through the dewatering cylinder (3), the water catching mechanism (7) comprising a motor (701) installed in the middle of the top of the dewatering cylinder (3), the output end of the motor (701) being fixedly connected to a rotating shaft (702), the outer surface of the rotating shaft (702) being fixedly connected to a water catching frame (703), the side wall of the water catching frame (703) being provided with a plurality of square grooves, each of the plurality of square grooves being provided with a groove (701). 4), two first mist catching nets (705) are arranged in each of the plurality of square grooves, wherein the top of one of the first mist catching nets (705) is fixedly connected to the inner top of the square groove, and the bottom of the other first mist catching net (705) is fixedly connected to the inner bottom of the square groove, adjacent sides of the two first mist catching nets (705) are fixedly connected to sliding rods (706), adjacent sides of the two sliding rods (706) are fixedly connected to second mist catching nets (707), and the bottom of the water catching frame (703) is fixedly connected to a water scraper rod (708); A drainage mechanism (8), the drainage mechanism (8) being installed at the bottom of the water-collecting mechanism (7) and located in the drainage pipe (11), the drainage mechanism (8) being used to clear the drainage pipe (11); A dewatering mechanism (9), the dewatering mechanism (9) being installed in the water capturing mechanism (7) and used for removing moisture from the air captured by the water capturing mechanism (7), the dewatering mechanism (9) comprising a dewatering box (901) fixedly connected to the water capturing frame (703), a fixed pipe (902) being fixedly connected to the middle of a side of the dewatering box (901) close to the second mist capturing net (707), an end of the fixed pipe (902) away from the dewatering box (901) being fixedly connected to a limiting plate (903), a sliding groove (904) being provided at an edge of the limiting plate (903), and a through hole (905) being provided on a side of the dewatering box (901) located on the fixed pipe (902); A deformation blowing mechanism (10), the deformation blowing mechanism (10) being installed in a water removal mechanism (9) and used to drive the water removal mechanism (9) to work, the deformation blowing mechanism (10) comprising a second bevel gear (1001) meshing with a first bevel gear (804), a rotating rod (1002) being fixedly connected to one side of the second bevel gear (1001), a piston plate (1003) being connected to the outer surface of the rotating rod (1002) via a thread, a connecting rope (1004) being fixedly connected to one side of the piston plate (1003) close to the first mist catching net (705), and an end of the connecting rope (1004) away from the piston plate (1003) being fixedly connected to two sliding rods (706) at upper and lower sides of the second mist catching net (707).

2. The air duct structure for preventing rainwater backflow according to claim 1, characterized in that: The side wall of the dewatering cylinder (3) is fixedly connected to a second air duct (4), the interior of the second air duct (4) is fixedly connected to a water guide plate (5), and the water guide plate (5) is arranged in an inclined direction, with the inclination direction being toward an end of the second air duct (4) away from the dewatering cylinder (3), and the interior of the first air duct (1) is fixedly connected to a water guide plate (6), the water guide plate (6) is arranged at an end of the first air duct (1) close to the sealing gasket (2), and the water guide plate (6) is arranged in an inclined downward direction, and is used to guide water leaking from the first air duct (1) and the wall installation portion into the dewatering cylinder (3).

3. The air duct structure for preventing rainwater backflow according to claim 1, characterized in that: The rotating shaft (702) passes through the top of the dewatering cylinder (3) and is rotatably connected to the dewatering cylinder (3); the end of the sliding rod (706) is slidably connected to the inner surface of the groove (704); both sides of the first mist catching net (705) are located in the groove (704); both sides of the second mist catching net (707) are located in the groove (704); the second mist catching net (707) is located in the middle of the groove (704) and is fixedly connected to the groove (704); and the wiper rod (708) is in contact with the inner surface of the dewatering cylinder (3).

4. The air duct structure for preventing rainwater backflow according to claim 1, characterized in that: The drainage mechanism (8) comprises a fixed gear (801) fixedly connected to the top of the water removal cylinder (3); the outer surface of the fixed gear (801) is meshed with a transmission gear (802); the bottom of the transmission gear (802) is fixedly connected to a transmission shaft (803); the outer surface of the transmission shaft (803) is fixedly connected to a first bevel gear (804); the bottom of the transmission shaft (803) is fixedly connected to a reciprocating screw (805); the outer surface of the reciprocating screw (805) is threadedly connected to a lifting ring (806); the bottom of the lifting ring (806) is fixedly connected to a connecting rod (807); the bottom of the connecting rod (807) is fixedly connected to a drainage spiral plate (808); the inner surface of the drainage spiral plate (808) is fixedly connected to a limiting rod (809); a limiting groove (8010) is provided at the bottom position of the outer surface of the rotating shaft (702); the limiting rod (809) is slidably connected to the limiting groove (8010).

5. The air duct structure for preventing rainwater backflow according to claim 4, characterized in that: The fixed gear (801) is rotationally connected to the rotating shaft (702), the transmission shaft (803) penetrates the water collecting frame (703) and is rotationally connected to the water collecting frame (703), the inner surface of the drainage spiral plate (808) is slidably connected to the outer surface of the rotating shaft (702), and the drainage spiral plate (808) is located in the drainage pipe (11).

6. The air duct structure for preventing rainwater backflow according to claim 1, characterized in that: The second mist catching net (707) is divided into two parts by a limiting plate (903); the adjacent side edge portions of the second mist catching net (707) of the two parts are located in the slide groove (904); and the middle portions of the adjacent side edge portions of the second mist catching net (707) of the two parts are fixedly connected to the middle portion of the slide groove (904); and the sliding rod (706) is located in the slide groove (904) and is slidably connected to the slide groove (904).

7. The air duct structure for preventing rainwater backflow according to claim 1, characterized in that: The rotating rod (1002) passes through the dewatering tank (901) and is rotatably connected to the dewatering tank (901); the portion of the rotating rod (1002) located inside the dewatering tank (901) is configured as a reciprocating screw; the outer surface of the piston plate (1003) is sealingly and slidably connected to the inner surface of the dewatering tank (901); the connecting rope (1004) passes through the side wall of the fixed tube (902) and is sealingly and slidably connected to the fixed tube (902); and the end of the rotating rod (1002) is rotatably connected to the limit plate (903).

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