Warming, filtering and ventilating device

Abstract

The invention belongs to the technical field of ventilation devices, and particularly relates to a warm air filter ventilation device which comprises a transfer box body, a main ventilation pipeline is inserted into the upper surface of the transfer box body, a first branch pipe and a second branch pipe are inserted into the surface of the main ventilation pipeline, and transmission assemblies are arranged in the first branch pipe and the second branch pipe correspondingly. Each transmission assembly comprises a first gear, a rectangular frame body, a main rotating shaft, an air plate with holes, a first connecting guide rod, a first toothed plate and a second toothed plate, and branch pipe judging assemblies are arranged on the surfaces of the first branch pipe and the second branch pipe respectively; it can be judged that no gas flows in the first branch pipe and the second branch pipe when the first warning lamp runs, the wind power condition in the pipeline can be judged by observing the running states of the third warning lamp and the second warning lamp, and stress in the rotating process of the first connecting shaft tends to be balanced; and the resistance in the rotating process of the first connecting shaft is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of ventilation devices, and in particular relates to a warm-pass filtering ventilation device. Background Art

[0002] HVAC is an integral part of a building, including: heating, ventilation, and air conditioning. When HVAC is used, air needs to be transported through ventilation devices;

[0003] Most of the existing ventilation methods are to inject fresh air from the outside into the room through fans. However, after long-term use, the ventilation ducts are easily blocked. The ventilation conditions inside the ducts are judged only by checking or troubleshooting one by one. This operation is inefficient. If the specific blocked ventilation duct cannot be determined in time and is not cleaned in time, the purification effect, wind speed and air volume will be affected.

[0004] Therefore, a warm-pass filtering ventilation device is designed to solve the above problems. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a warm pass filtering ventilation device, which can effectively solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a warm-pass filtering ventilation device, comprising a transfer box, a main ventilation duct is inserted into the upper surface of the transfer box, and a first branch pipe and a second branch pipe are inserted into the surface of the main ventilation duct;

[0007] The first branch pipe and the second branch pipe are both provided with transmission components, and each group of the transmission components includes a first gear, a rectangular frame, a main rotating shaft, a perforated air plate, a first connecting guide rod, a first tooth plate and a second tooth plate;

[0008] The surfaces of the first branch pipe and the second branch pipe are respectively provided with branch pipe judgment components, and each group of the branch pipe judgment components includes a first connecting shaft, a first pull rope, a first insulating rod, a second warning light, a third warning light, a first guide plate, a second guide plate, a third guide plate, a first counterweight block, a second counterweight block, a third counterweight block, a first bracket and a second bracket;

[0009] A balanced force component is disposed on the surface of each of the first connecting shafts, and the balanced force component includes a second gear, a third gear, a second connecting shaft, a first balance block, a second balance block, a third balance block, a first balance rod, a fourth counterweight block, a fifth counterweight block and a sixth counterweight block;

[0010] A main pipe determination assembly is disposed on the surface of the second branch pipe, and the main pipe determination assembly includes a first single-side guide rod, a middle guide rod, a second single-side guide rod, a first spring and an auxiliary conductor pressing block.

[0011] As a preferred warm-pass filtering and ventilation device of the present invention, a perforated air plate is provided inside the first branch pipe, and the upper end of the perforated air plate is fixedly connected to the main rotating shaft, and the two end surfaces of the main rotating shaft are respectively sleeved with a first bearing, and the first bearing is installed in a through hole 1 opened in the first branch pipe, and the main rotating shaft is rotatably connected to the first branch pipe through the first bearing, and a rectangular frame is installed on the surface of the first branch pipe, one end of the main rotating shaft extends to the outside of the first branch pipe and is inserted in a through hole 2 opened in the surface of the rectangular frame, the main rotating shaft and the rectangular frame are rotatably connected, and a second tooth plate and a first tooth plate are provided inside the rectangular frame, and the second tooth plate and the first tooth plate are both slidably connected to the rectangular frame, and a first gear is provided between the first tooth plate and the second tooth plate, and the first gear is sleeved on the surface of the main rotating shaft and fixedly connected to the main rotating shaft, the first tooth plate and the second tooth plate are both meshed with the first gear, and the top end of the second tooth plate is fixedly connected to the first connecting guide rod.

[0012] As a preferred warm-pass filtering ventilation device of the present invention, the upper surface of the first branch pipe is fixedly connected to the upper box body, the upper surface of the upper box body is equipped with a first warning light, the upper surface of the upper box body is equipped with a battery, the upper box body is provided with a middle guide rod inside the upper box body, the bottom surface of the middle guide rod is fixedly connected to the support plate, the bottom end of the support plate is fixedly connected to the upper box body, and the interior of the upper box body is fixedly connected with a first single-side guide rod and a second single-side guide rod which are symmetrically arranged, the middle guide rod is located between the first single-side guide rod and the second single-side guide rod, the bottom surface of the upper box body is provided with a slot matching the first tooth plate and the second tooth plate, the first tooth plate and the second tooth plate are respectively inserted into the slots provided on the bottom surface of the upper box body, the first tooth plate and the second tooth plate are respectively slidably connected to the upper box body, and the first connecting guide rod is located inside the upper box body.

[0013] As a preferred warm-pass filtering ventilation device of the present invention, auxiliary conductor pressure blocks and first springs are provided in rectangular grooves respectively opened at both ends of the middle guide rod, and both ends of the first spring are respectively fixedly connected to the middle guide rod and the auxiliary conductor pressure block, and the auxiliary conductor pressure block and the middle guide rod are slidably connected.

[0014] As a preferred warm-pass filtering and ventilation device of the present invention, a first box is provided on one side of the first branch pipe, a first connecting block is provided between the first box and the first branch pipe, two ends of the first connecting block are fixedly connected to the first branch pipe and the first box respectively, a third warning light and a second warning light are installed on the upper surface of the first box, a first connecting shaft is fixedly connected to a side of the first gear away from the main rotating shaft, one end of the first connecting shaft passes through the rectangular frame and extends to the outside of the rectangular frame, the first connecting shaft is rotatably connected to the rectangular frame, a first pull rope is fixedly connected to the surface of the first connecting shaft, a first guide plate is provided inside the first box, a first insulating rod is fixedly connected to one side of the first guide plate, the first insulating rod is inserted into a rectangular groove provided on the surface of the first box, and is slidably connected to the first box, a second guide plate and a third guide plate are sleeved on the surface of the first insulating rod, the second guide plate is located between the third guide plate and the first guide plate, and the second guide plate and the third guide plate are both slidably connected to the first insulating rod, the third guide plate, the second guide plate and the first guide plate are all slidably connected to the inside of the first box, and one end of the first insulating rod away from the first guide plate is fixedly connected to one end of the first pull rope.

[0015] As a preferred warm-pass filtering and ventilation device of the present invention, a first long L-shaped rod is fixedly connected to the bottom surface of the first box body, a first counterweight block is provided on the surface sliding sleeve of the first long L-shaped rod, a fourth pull rope is provided in a first square groove opened on one side of the first box body, two ends of the fourth pull rope are respectively fixedly connected to the upper surface of the first counterweight block and one side of the first guide plate, a first bracket and a second bracket are fixedly connected to one side of the first box body, and the first bracket is located inside the second bracket, a first middle L-shaped rod is fixedly connected to the bottom surface of the first bracket, a second counterweight block is provided on the surface sliding sleeve of the first middle L-shaped rod, and the bottom surface of the second bracket is fixed A first short L-shaped rod is connected, and a third counterweight block is provided on the surface sliding sleeve of the first short L-shaped rod. A third pull rope is provided in two second square grooves opened on one side of the first box body, and two ends of each third pull rope are respectively fixedly connected to one side of the second guide plate and the upper surface of the second counterweight block, and the third pull rope passes through the first through hole opened on the surface of the first guide plate, and a second pull rope is provided in two third-party grooves opened on one side of the first box body, and two ends of the second pull rope are respectively fixedly connected to one side of the third guide plate and the upper surface of the third counterweight block, and the second pull rope passes through the second through hole opened on the surface of the first guide plate and the third through hole opened on the surface of the second guide plate.

[0016] As a preferred warm-pass filtering and ventilation device of the present invention, a first slider is inserted into a first groove opened inside the first box body, the first slider is slidably connected to the first box body, the first slider is fixedly connected to the surface of the third guide plate, a second slide groove connected to the first groove is opened inside the first box body, a second slider is fixedly connected to the surface of the second guide plate, the second slider is inserted inside the second slide groove, and is slidably connected to the first box body.

[0017] As a preferred warm-pass filtering and ventilation device of the present invention, the end of the first connecting shaft away from the first gear is fixedly connected to the second gear, the surface of the second gear is meshingly connected to the third gear, the second connecting shaft is fixedly connected at the center position of one side of the third gear, the surface of the second connecting shaft is sleeved with a second bearing, the second connecting shaft is rotatably connected to the surface of the rectangular frame through the second bearing, and the surface of the second connecting shaft is fixedly connected to one end of the eighth pull rope.

[0018] As a preferred warm-pass filtering and ventilation device of the present invention, a second box is provided on the side of the first branch pipe close to the first box, the second box and the first branch pipe are fixedly connected, a first balance block, a second balance block and a third balance block are provided inside the second box, the first balance block, the second balance block and the third balance block are all slidably connected to the second box, the second balance block is located between the first balance block and the third balance block, a first balance rod is inserted in the square through groove opened inside the second balance block and the third balance block, the first balance rod is slidably connected to the inside of the second balance block and the third balance block, and one end of the first balance rod is fixedly connected to the first balance block, the other end of the first balance rod passes through the second box and is fixedly connected to the end of the eighth pull rope away from the second connecting axis, and the first balance rod and the second box are slidably connected.

[0019] As a preferred warm-pass filtering and ventilation device of the present invention, a second long L-shaped rod is fixedly connected to the bottom surface of the second box body, a fourth counterweight is provided on the surface sliding sleeve of the second long L-shaped rod, a fifth pull rope is provided in a fourth square groove opened on one side of the second box body, two ends of the fifth pull rope are fixedly connected to the fourth counterweight and the first balance block respectively, a fourth bracket and a third bracket are fixedly connected to one side of the second box body, the fourth bracket is located inside the third bracket, a second middle L-shaped rod is fixedly connected to the bottom surface of the fourth bracket, a sixth counterweight is provided on the surface sliding sleeve of the second middle L-shaped rod, and two fifth A sixth pull rope is respectively arranged in the square groove, and two ends of the sixth pull rope are respectively fixedly connected to the sixth counterweight block and the second balance block, and the two sixth pull ropes respectively pass through the two fourth through holes opened on the surface of the first balance block, and a second short L-shaped rod is fixedly connected to the bottom surface of the third bracket, and a fifth counterweight block is slidingly sleeved on the surface of the second short L-shaped rod, and a seventh pull rope is respectively arranged in the two sixth square grooves opened on one side of the second box body, and two ends of the seventh pull rope are respectively fixedly connected to the fifth counterweight block and the third balance block, and the seventh pull rope respectively passes through the fifth through hole opened on the surface of the first balance block and the sixth through hole opened on the surface of the second balance block.

[0020] Compared with the prior art, the invention has the following beneficial effects: the invention has a scientific and reasonable structure and is safe and convenient to use:

[0021] 1. A transmission component is provided. As the wind force is applied to the perforated wind plate, the perforated wind plate rotates around the main rotation axis. The wind force inside the pipeline can be judged by the rotation of the perforated wind plate;

[0022] Through the use of the first gear, the rectangular frame, the main rotating shaft, the perforated air plate, the first connecting guide rod, the first tooth plate and the second tooth plate, a plurality of air holes are opened on the surface of the perforated air plate to facilitate gas circulation, so that when the fan is damaged, some oxygen can still circulate;

[0023] The common weight of the first connecting guide rod and the second tooth plate is the same as the gravity of the first tooth plate, thereby reducing the resistance during the rotation of the main rotating shaft, avoiding the situation where it is difficult for the perforated wind plate to rotate when the wind is flowing, and achieving the effect of facilitating the rotation of the perforated wind plate when there is gas flowing.

[0024] 2. A branch pipe judgment component is provided. By observing the operating status of the third warning light and the second warning light, the wind force inside the pipeline can be judged. When the third warning light and the second warning light are not operating, it can be judged that there is no gas flow or a little gas flow inside the pipeline, and whether the pipeline is blocked can be judged. When the third warning light and the second warning light are operating normally, it can be judged that the wind force inside the pipeline is normal;

[0025] By using the first connecting shaft, the first pull rope, the first insulating rod, the second warning light, the third warning light, the first guide plate, the second guide plate, the third guide plate, the first counterweight, the second counterweight, the third counterweight, the first bracket and the second bracket, when the surfaces of the first guide plate and the second guide plate are in contact with each other, the third warning light and the battery form a closed circuit, and the third warning light at this time emits a flashing light. When the two sides of the second guide plate are respectively in contact with the surfaces of the third guide plate and the first guide plate, the third warning light and the second warning light form a parallel circuit with the battery, and both the third warning light and the second warning light emit flashing lights. By observing the operating status of the third warning light and the second warning light, the wind force condition inside the pipeline can be judged;

[0026] 3. A balanced force component is provided, which is conducive to making the force of the first connecting shaft during the rotation process close to balance and reducing the resistance during the rotation of the first connecting shaft;

[0027] By using the second gear, the third gear, the second connecting shaft, the first balancing block, the second balancing block, the third balancing block, the first balancing rod, the fourth counterweight block, the fifth counterweight block and the sixth counterweight block, when the rotation of the first connecting shaft pulls the first insulating rod and the first guide plate to move through the first pull rope, the rotation of the second connecting shaft pulls the first balancing block and the first balancing rod to move through the eighth pull rope, so that the force during the rotation of the first connecting shaft approaches balance, and the resistance during the rotation of the first connecting shaft is reduced, which is conducive to making the force during the rotation of the first connecting shaft approach balance, reducing the resistance during the rotation of the first connecting shaft, and achieving the effect of allowing the first connecting shaft to rotate in windy conditions;

[0028] 4. A main pipe judgment component is provided, which is conducive to judging that there is no gas flow inside the first branch pipe and the second branch pipe when the first warning light is running. When the first warning light stops running, there may be gas flow inside the first branch pipe and the second branch pipe or one of the first branch pipe and the second branch pipe. By observing the operation of the warning light, the blocked area of ​​the ventilation duct can be quickly judged, the judgment efficiency is high, and it is convenient to clean in time, so as to ensure the filtering ventilation purification effect, wind speed and air volume;

[0029] By using the first single-sided guide rod, the middle guide rod, the second single-sided guide rod, the first spring and the auxiliary conductor pressure block, the positive electrode of the battery is connected to the second single-sided guide rod through a wire, the inlet end of the first warning light is connected to the first single-sided guide rod through a wire, and the outlet end of the first warning light is connected to the negative electrode of the battery through a wire. When the first warning light is running, there are three conclusions. The first conclusion is that there is no gas flow inside the main ventilation duct, which can be judged that the fan inside the main ventilation duct is damaged or the main ventilation duct is blocked. The second conclusion is that the pipes of the first branch pipe and the second branch pipe are blocked. The third conclusion is that the pipes of the main ventilation duct, the first branch pipe and the second branch pipe are blocked or the fan inside the main ventilation duct is damaged;

[0030] When the first warning light stops working, there are three conclusions. The first conclusion is that gas flows inside both the first branch pipe and the second branch pipe, and the second conclusion is that gas flows inside one of the first branch pipe or the second branch pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 For the present invention Figure 1 Sectional view at AA in the middle;

[0034] Figure 3 It is a schematic structural diagram of the first connecting guide rod and the middle guide rod in the present invention;

[0035] Figure 4 It is a schematic diagram of the structure of the perforated air plate and the main rotating shaft in the present invention;

[0036] Figure 5 For the present invention Figure 4 The enlarged view of point A in the middle;

[0037] Figure 6 It is a structural schematic diagram of the first tooth plate and the rectangular frame in the present invention;

[0038] Figure 7 It is a structural schematic diagram of the first box body and the first insulating rod in the present invention;

[0039] Figure 8 For the present invention Figure 7 Sectional view at the middle BB;

[0040] Fig. 9 For the present invention Figure 8 The enlarged view of point B in the middle;

[0041] Fig.10 For the present invention Figure 8 Enlarged view of point C in the middle;

[0042] Fig.11 It is a schematic diagram of the structure of the second guide plate and the first guide plate in the present invention;

[0043] Fig.12 A circuit diagram of the second warning light, the third warning light and the first warning light connected to a battery in the present invention;

[0044] In the figure:

[0045] 1. Main ventilation duct; 2. Transfer box; 3. First branch pipe; 4. Second branch pipe;

[0046] 5. Transmission assembly; 51. First gear; 53. Rectangular frame; 54. Main rotating shaft; 55. First bearing; 56. Air plate with holes; 511. First connecting guide rod; 512. First tooth plate; 513. Second tooth plate;

[0047] 6. Branch pipe judgment component; 61. First connecting shaft; 62. First pull rope; 63. First insulating rod; 64. First connecting block; 65. Second warning light; 66. Third warning light; 67. First box; 68. First guide plate; 69. Second guide plate; 610. Third guide plate; 611. First groove; 612. First slider; 613. Second slider; 614. Second slide; 615. First long L-shaped rod; 616. First middle L-shaped rod; 617. First short L-shaped rod; 618. First counterweight; 619. Second counterweight; 620. Third counterweight; 621. Second pull rope; 622. Third pull rope; 623. Fourth pull rope; 624. First bracket; 625. Second bracket;

[0048] 7. Balanced force component; 71. Second gear; 72. Third gear; 73. Second connecting shaft; 74. Second bearing; 75. First balance block; 76. Second balance block; 77. Third balance block; 78. First balance pull rod; 79. Fifth pull rope; 710. Sixth pull rope; 711. Seventh pull rope; 712. Second box; 714. Third bracket; 715. Fourth bracket; 716. Second long L-shaped rod; 717. Second middle L-shaped rod; 718. Second short L-shaped rod; 719. Fourth counterweight; 720. Fifth counterweight; 721. Sixth counterweight; 722. Eighth pull rope;

[0049] 8. Supervisory judgment component; 81. First warning light; 82. Upper box; 83. Battery; 84. First single-side guide rod; 85. Middle guide rod; 86. Support plate; 87. Second single-side guide rod; 88. First spring; 89. Rectangular groove; 810. Auxiliary conductor pressing block. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] Example: Figure 1 - Fig.12 As shown, the present invention provides a technical solution, a warm-pass filtering ventilation device, comprising a transfer box 2, a main ventilation duct 1 is inserted on the upper surface of the transfer box 2, and a first branch pipe 3 and a second branch pipe 4 are inserted on the surface of the main ventilation duct 1;

[0052] Transmission components 5 are disposed inside the first branch pipe 3 and the second branch pipe 4. Each transmission component 5 includes a first gear 51, a rectangular frame 53, a main rotating shaft 54, a perforated air plate 56, a first connecting guide rod 511, a first tooth plate 512 and a second tooth plate 513.

[0053] The surfaces of the first branch pipe 3 and the second branch pipe 4 are respectively provided with branch pipe determination components 6, and each group of branch pipe determination components 6 includes a first connecting shaft 61, a first pull rope 62, a first insulating rod 63, a second warning light 65, a third warning light 66, a first guide plate 68, a second guide plate 69, a third guide plate 610, a first counterweight block 618, a second counterweight block 619, a third counterweight block 620, a first bracket 624 and a second bracket 625;

[0054] A balanced force component 7 is disposed on the surface of each first connecting shaft 61, and the balanced force component 7 includes a second gear 71, a third gear 72, a second connecting shaft 73, a first balancing block 75, a second balancing block 76, a third balancing block 77, a first balancing rod 78, a fourth counterweight block 719, a fifth counterweight block 720 and a sixth counterweight block 721;

[0055] A main pipe determination assembly 8 is disposed on the surface of the second branch pipe 4 . The main pipe determination assembly 8 includes a first single-side guide rod 84 , a middle guide rod 85 , a second single-side guide rod 87 , a first spring 88 and an auxiliary conductor pressing block 810 .

[0056] A perforated air plate 56 is provided inside the first branch pipe 3, and a main rotating shaft 54 ​​is fixedly connected to the upper end of the perforated air plate 56. First bearings 55 are respectively sleeved on the surfaces of both ends of the main rotating shaft 54. The first bearing 55 is installed in a through hole 1 opened inside the first branch pipe 3. The main rotating shaft 54 ​​is rotatably connected to the first branch pipe 3 through the first bearing 55. A rectangular frame 53 is installed on the surface of the first branch pipe 3. One end of the main rotating shaft 54 ​​extends to the outside of the first branch pipe 3 and is inserted into a through hole 2 opened on the surface of the rectangular frame 53. The main rotating shaft 54 ​​and the rectangular frame 53 are connected to each other. The rectangular frame 53 is rotatably connected, and a second tooth plate 513 and a first tooth plate 512 are arranged inside the rectangular frame 53. The second tooth plate 513 and the first tooth plate 512 are both slidably connected to the rectangular frame 53. A first gear 51 is arranged between the first tooth plate 512 and the second tooth plate 513. The first gear 51 is sleeved on the surface of the main rotating shaft 54 ​​and fixedly connected to the main rotating shaft 54. The first tooth plate 512 and the second tooth plate 513 are both meshed and connected to the first gear 51. The top of the second tooth plate 513 is fixedly connected to the first connecting guide rod 511.

[0057] The upper surface of the first branch pipe 3 is fixedly connected with an upper box body 82, and a first warning light 81 is installed on the upper surface of the upper box body 82. A battery 83 is installed inside the upper box body 82. A middle guide rod 85 is arranged inside the upper box body 82, and a support plate 86 is fixedly connected to the bottom surface of the middle guide rod 85. The bottom end of the support plate 86 is fixedly connected to the upper box body 82. A first unilateral guide rod 84 and a second unilateral guide rod 87 which are symmetrically arranged are fixedly connected inside the upper box body 82. The middle guide rod 85 is located between the first unilateral guide rod 84 and the second unilateral guide rod 87. A slot matching the first tooth plate 512 and the second tooth plate 513 is provided on the bottom surface of the upper box body 82. The first tooth plate 512 and the second tooth plate 513 are respectively inserted into the slots provided on the bottom surface of the upper box body 82. The first tooth plate 512 and the second tooth plate 513 are respectively slidably connected to the upper box body 82, and the first connecting guide rod 511 is located inside the upper box body 82.

[0058] Auxiliary conductor pressing blocks 810 and first springs 88 are disposed in rectangular grooves 89 respectively opened at both ends of the middle guide rod 85. Both ends of the first spring 88 are fixedly connected to the middle guide rod 85 and the auxiliary conductor pressing blocks 810 respectively. The auxiliary conductor pressing blocks 810 and the middle guide rod 85 are slidably connected.

[0059] A first box body 67 is provided on one side of the first branch pipe 3, a first connecting block 64 is provided between the first box body 67 and the first branch pipe 3, two ends of the first connecting block 64 are fixedly connected to the first branch pipe 3 and the first box body 67 respectively, a third warning light 66 and a second warning light 65 are installed on the upper surface of the first box body 67, a first connecting shaft 61 is fixedly connected to a side of the first gear 51 away from the main rotating shaft 54, one end of the first connecting shaft 61 passes through the rectangular frame body 53 and extends to the outside of the rectangular frame body 53, the first connecting shaft 61 and the rectangular frame body 53 are rotatably connected, a first pull rope 62 is fixedly connected to the surface of the first connecting shaft 61, and a first guide is provided inside the first box body 67. Plate 68, one side of the first guide plate 68 is fixedly connected with the first insulating rod 63, the first insulating rod 63 is inserted into a rectangular groove opened on the surface of the first box body 67, and is slidably connected with the first box body 67, the surface of the first insulating rod 63 is sleeved with a second guide plate 69 and a third guide plate 610, the second guide plate 69 is located between the third guide plate 610 and the first guide plate 68, and the second guide plate 69 and the third guide plate 610 are both slidably connected with the first insulating rod 63, the third guide plate 610, the second guide plate 69 and the first guide plate 68 are all slidably connected to the inside of the first box body 67, and the end of the first insulating rod 63 away from the first guide plate 68 is fixedly connected to one end of the first pull rope 62.

[0060] The bottom surface of the first box body 67 is fixedly connected to a first long L-shaped rod 615, and a first counterweight block 618 is slidably sleeved on the surface of the first long L-shaped rod 615. A fourth pull rope 623 is arranged in a first square groove opened on one side of the first box body 67, and both ends of the fourth pull rope 623 are respectively fixedly connected to the upper surface of the first counterweight block 618 and one side of the first guide plate 68. A first bracket 624 and a second bracket 625 are fixedly connected to one side of the first box body 67, and the first bracket 624 is located inside the second bracket 625. The bottom surface of the first bracket 624 is fixedly connected to a first middle L-shaped rod 616, and a second counterweight block 619 is slidably sleeved on the surface of the first middle L-shaped rod 616. The bottom surface of the second bracket 625 is fixedly connected to a first short L-shaped rod 617, a third counterweight 620 is provided on the surface sliding sleeve of the first short L-shaped rod 617, and a third pull rope 622 is provided in two second square grooves opened on one side of the first box body 67, and two ends of each third pull rope 622 are respectively fixedly connected to one side of the second guide plate 69 and the upper surface of the second counterweight 619, and the third pull rope 622 passes through the first through hole opened on the surface of the first guide plate 68, and a second pull rope 621 is provided in two third party grooves opened on one side of the first box body 67, and two ends of the second pull rope 621 are respectively fixedly connected to one side of the third guide plate 610 and the upper surface of the third counterweight 620, and the second pull rope 621 passes through the second through hole opened on the surface of the first guide plate 68 and the third through hole opened on the surface of the second guide plate 69.

[0061] A first sliding block 612 is inserted into a first groove 611 opened inside the first box body 67, the first sliding block 612 is slidably connected to the first box body 67, the first sliding block 612 is fixedly connected to the surface of the third guide plate 610, a second sliding groove 614 connected to the inside of the first groove 611 is opened inside the first box body 67, a second sliding block 613 is fixedly connected to the surface of the second guide plate 69, the second sliding block 613 is inserted inside the second sliding groove 614, and is slidably connected to the first box body 67.

[0062] The end of the first connecting shaft 61 away from the first gear 51 is fixedly connected to the second gear 71, the surface of the second gear 71 is meshingly connected to the third gear 72, and the second connecting shaft 73 is fixedly connected to the center position of one side of the third gear 72. The surface of the second connecting shaft 73 is sleeved with a second bearing 74, and the second connecting shaft 73 is rotatably connected to the surface of the rectangular frame 53 through the second bearing 74. The surface of the second connecting shaft 73 is fixedly connected to one end of the eighth pull rope 722.

[0063] A second box body 712 is provided on the side of the first branch pipe 3 close to the first box body 67, and the second box body 712 is fixedly connected to the first branch pipe 3. A first balancing block 75, a second balancing block 76 and a third balancing block 77 are provided inside the second box body 712. The first balancing block 75, the second balancing block 76 and the third balancing block 77 are all slidably connected to the second box body 712. The second balancing block 76 is located between the first balancing block 75 and the third balancing block 77. A first balancing rod 78 is inserted into the square through groove provided inside the second balancing block 76 and the third balancing block 77. The first balancing rod 78 is slidably connected to the inside of the second balancing block 76 and the third balancing block 77, and one end of the first balancing rod 78 is fixedly connected to the first balancing block 75, and the other end of the first balancing rod 78 passes through the second box body 712 and is fixedly connected to the end of the eighth pull rope 722 away from the second connecting shaft 73. The first balancing rod 78 is slidably connected to the second box body 712.

[0064] A second long L-shaped rod 716 is fixedly connected to the bottom surface of the second box body 712, and a fourth counterweight 719 is slidingly sleeved on the surface of the second long L-shaped rod 716. A fifth pull rope 79 is arranged in a fourth square groove opened on one side of the second box body 712, and both ends of the fifth pull rope 79 are fixedly connected to the fourth counterweight 719 and the first balance block 75, respectively. A fourth bracket 715 and a third bracket 714 are fixedly connected to one side of the second box body 712, and the fourth bracket 715 is located inside the third bracket 714. A second middle L-shaped rod 717 is fixedly connected to the bottom surface of the fourth bracket 715, and a sixth counterweight 721 is slidingly sleeved on the surface of the second middle L-shaped rod 717. The two fifth square grooves opened on one side of the second box body 712 are respectively provided with the fourth counterweight 721. There are six pull ropes 710, and both ends of the sixth pull rope 710 are fixedly connected to the sixth counterweight 721 and the second balance block 76 respectively. The two sixth pull ropes 710 respectively pass through the two fourth through holes opened on the surface of the first balance block 75. The bottom surface of the third bracket 714 is fixedly connected with the second short L-shaped rod 718, and the surface of the second short L-shaped rod 718 is slidably sleeved with the fifth counterweight 720. The two sixth square grooves opened on one side of the second box body 712 are respectively provided with the seventh pull rope 711, and both ends of the seventh pull rope 711 are fixedly connected to the fifth counterweight 720 and the third balance block 77 respectively. The seventh pull rope 711 respectively passes through the fifth through hole opened on the surface of the first balance block 75 and the sixth through hole opened on the surface of the second balance block 76.

[0065] It should be noted that: the main ventilation duct 1 connects the external and indoor pipes, the transfer box 2 is installed indoors and connected to different areas through the first branch pipe 3 and the second branch pipe 4, and a fan and a filter component are installed inside the main ventilation duct 1 (which is a conventional setting in this field and will not be described here. At the same time, the first branch pipe 3 and the second branch pipe 4 can also be equipped with a filter component). When the fan inside the main ventilation duct 1 is running, the external air flows into the interior of the transfer box 2 along the interior of the main ventilation duct 1, is filtered by the filter component, and flows into different areas along the interior of the first branch pipe 3 and the second branch pipe 4.

[0066] It should be noted that: the weight of the first balancing block 75 and the first guide plate 68 are the same, the weight of the second balancing block 76 and the second guide plate 69 are the same, the weight of the third guide plate 610 and the third balancing block 77 are the same, and the weight of the first counterweight block 618, the second counterweight block 619, the third counterweight block 620, the fourth counterweight block 719, the sixth counterweight block 721 and the fifth counterweight block 720 are all the same, thereby reducing the resistance during the rotation of the perforated wind plate 56. The gravity of the first connecting guide rod 511 and the second tooth plate 513 together is the same as the gravity of the first tooth plate 512, thereby reducing the resistance to the rotation of the main rotating shaft 54 ​​and avoiding the situation where the perforated wind plate 56 cannot rotate when the wind force is small.

[0067] It should be noted that: the positive electrode of the battery 83 is connected to the second single-sided guide rod 87 through a wire, the inlet end of the first warning light 81 is connected to the first single-sided guide rod 84 through a wire, and the outlet end of the first warning light 81 is connected to the negative electrode of the battery 83 through a wire. When the interiors of the first branch pipe 3 and the second branch pipe 4 are not ventilated, the perforated air plate 56 naturally moves downward under the action of gravity, and the two ends of the first connecting guide rod 511 above the first branch pipe 3 are respectively fitted with the first single-sided guide rod 84 and the middle guide rod 85, and the second branch pipe 4 When the two ends of the first connecting guide rod 511 above are respectively in contact with the middle guide rod 85 and the second single-sided guide rod 87, the battery 83 and the first warning light 81 form a closed circuit, and the first warning light 81 emits a warning light. When one of the first connecting guide rods 511 is higher than the middle guide rod 85 and does not contact the middle guide rod 85, or the two first connecting guide rods 511 are higher than the middle guide rod 85 and do not contact the middle guide rod 85, the battery 83 and the first warning light 81 form an open circuit, and the first warning light 81 stops working.

[0068] It should be noted that: the positive electrode of the battery 83 is connected to the first guide plate 68 through a wire, and the negative electrode of the battery 83 is connected to two wires, one end of the wire away from the battery 83 is connected to the outlet end of the third warning light 66, and the other end of the wire away from the battery 83 is connected to the outlet end of the second warning light 65, the inlet end of the third warning light 66 is connected to the second guide plate 69 through a wire, and the inlet end of the second warning light 65 is connected to the third guide plate 610 through a wire. When the surfaces of the first guide plate 68 and the second guide plate 69 are in contact with each other, the third warning light 66 and the battery 83 form a closed circuit, and the third warning light 66 emits a flashing light. When the two sides of the second guide plate 69 are in contact with the surfaces of the third guide plate 610 and the first guide plate 68, respectively, the third warning light 66 and the second warning light 65 form a parallel circuit with the battery 83, and both the third warning light 66 and the second warning light 65 emit flashing lights.

[0069] Working principle: When the device is in use, the fan inside the main ventilation duct 1 is operated. When the fan inside the main ventilation duct 1 is in operation, the external gas flows into the interior of the transfer box 2 along the interior of the main ventilation duct 1, and flows into various areas along the interior of the first branch pipe 3 and the second branch pipe 4. When the gas flows inside the first branch pipe 3 and the second branch pipe 4, the gas exerts a force on the perforated air plate 56 inside the first branch pipe 3 and the second branch pipe 4. As the wind force is exerted on the perforated air plate 56, the perforated air plate 56 rotates with the main rotation axis 54 as the axis.

[0070] In the process of driving the main rotating shaft 54 ​​to rotate, the perforated air plate 56 causes the first gear 51 to rotate inside the rectangular frame 53. The rotation of the first gear 51 causes the second tooth plate 513 and the first tooth plate 512 to move in opposite directions at the same time, so that the first connecting guide rod 511 is higher than the position of the middle guide rod 85. When the interiors of the first branch pipe 3 and the second branch pipe 4 are both ventilated, the perforated air plate 56 rotates, so that the two first connecting guide rods 511 are higher than the middle guide rod 85, and the two first connecting guide rods 511 are not in contact with the middle guide rod 85. At this time, the battery 83 and the first warning light 81 are disconnected, and the first warning light 81 stops working. When the gas in one of the first branch pipe 3 and the second branch pipe 4 stops flowing, the perforated air plate 56 drives the main rotating shaft 54 ​​to rotate under the action of gravity, so that the first connecting guide rod 511 at the corresponding position moves downward until it moves to fit with the end of the middle guide rod 85, and the other first branch pipe 3 or the second branch pipe 4 is in contact with the other first branch pipe 3 or the second branch pipe 4. 4. The first connecting guide rod 511 at the corresponding position is still higher than the middle guide rod 85 and does not contact the middle guide rod 85. At this time, the first warning light 81 and the storage battery 83 are still disconnected, and the first warning light 81 is still not running. Therefore, it can be judged that a closed circuit is formed between the first warning light 81 and the storage battery 83. When the first warning light 81 emits light, there is no gas flow inside the first branch pipe 3 and the second branch pipe 4. When the first warning light 81 and the storage battery 83 are disconnected and the first warning light 81 stops running, two situations may occur at this time, namely, there is gas flow inside the first branch pipe 3 and the second branch pipe 4, or there is gas flow inside one of the first branch pipe 3 and the second branch pipe 4. This is conducive to judging that there is no gas flow inside the first branch pipe 3 and the second branch pipe 4 when the first warning light 81 is running. When the first warning light 81 stops running, it may be that there is gas flow inside the first branch pipe 3 and the second branch pipe 4, or there is gas flow inside one of the first branch pipe 3 and the second branch 4.

[0071] The common weight of the first connecting guide rod 511 and the second tooth plate 513 is the same as the gravity of the first tooth plate 512, thereby reducing the resistance of the main rotating shaft 54 ​​during rotation, avoiding the situation that the perforated air plate 56 is difficult to rotate when the wind is flowing, and achieving the effect of facilitating the rotation of the perforated air plate 56 when there is gas flow;

[0072] When the first warning light 81 is on, there are three conclusions. The first conclusion is that there is no gas flow inside the main ventilation duct 1, which can be judged that the fan inside the main ventilation duct 1 is damaged or the main ventilation duct 1 is blocked. The second conclusion is that the pipes of the first branch pipe 3 and the second branch pipe 4 are blocked. The third conclusion is that the pipes of the main ventilation duct 1, the first branch pipe 3 and the second branch pipe 4 are blocked or the fan inside the main ventilation duct 1 is damaged.

[0073] When the first warning light 81 stops running, there are three conclusions: the first conclusion is that gas flows inside both the first branch pipe 3 and the second branch pipe 4; the second conclusion is that gas flows inside one of the first branch pipe 3 or the second branch pipe 4;

[0074] When gas flows in the first branch pipe 3 or the second branch pipe 4, the perforated air plate 56 drives the first gear 51 to rotate, and the rotation of the first gear 51 drives the first connecting shaft 61 to rotate, so that the first pull rope 62 is wound around the surface of the first connecting shaft 61. As the first pull rope 62 is wound around the surface of the first connecting shaft 61, the first guide plate 68 can be pulled by the first insulating rod 63 to slide inside the first box 67. As the first guide plate 68 moves, when the first guide plate 68 moves to just fit the surface of the second guide plate 69, the perforated air plate 56 rotates to 30 degrees. At this time, the third warning light 66 emits a flashing light, and the second guide plate 69 does not fit the surface of the third guide plate 610. At this time, the second warning light 65 does not light up, so it can be judged that the gas flow rate inside the pipeline is slow.

[0075] As the perforated air plate 56 rotates, the first guide plate 68 continues to move, and the movement of the first guide plate 68 at this time drives the second guide plate 69 to move synchronously. When the perforated air plate 56 rotates to just 60 degrees, the surfaces of the second guide plate 69 and the third guide plate 610 fit together. At this time, the third warning light 66 and the second warning light 65 form a parallel circuit with the battery 83, and the third warning light 66 and the second warning light 65 both emit flashing lights. When the third warning light 66 and the second warning light 65 both emit flashing lights, it indicates that the wind force inside the pipeline meets the standard requirements. When the wind force inside the pipeline increases, the rotation angle of the perforated air plate 56 continues to increase, and as the perforated air plate 56 rotates to just 60 degrees, the surfaces of the second guide plate 69 and the third guide plate 610 fit together. The continuous rotation increases the rotation angle of the perforated air plate 56. As the rotation angle of the perforated air plate 56 increases, the surfaces of the first guide plate 68, the second guide plate 69 and the third guide plate 610 always move in close contact, so that the second warning light 65 and the third warning light 66 are always in operation. By observing the operation states of the third warning light 66 and the second warning light 65, the wind force inside the pipeline can be judged. When the third warning light 66 and the second warning light 65 are not in operation, it can be judged that there is no gas flow or a little gas flow inside the pipeline, and whether the pipeline is blocked can be judged. When the third warning light 66 and the second warning light 65 are operating normally, it can be judged that the wind force inside the pipeline is normal.

[0076] According to the operation of the first warning light 81, combined with the operation of the third warning light 66 and the second warning light 65, the gas flow inside the first branch pipe 3 and the second branch pipe 4 can be judged, that is, when the first warning light 81 stops running, according to the operation of the second warning light 65 and the third warning light 66 at the corresponding positions of the first branch pipe 3 and the second branch pipe 4, it can be judged whether there is a blockage inside the first branch pipe 3 or the second branch pipe 4;

[0077] When the first branch pipe 3 or the second branch pipe 4 is blocked, the first guide plate 68, the second guide plate 69 and the third guide plate 610 can be pulled to slide inside the first box body 67 under the action of the gravity of the first counterweight block 618, the second counterweight block 619 and the third counterweight block 620, and the sliding of the second slider 613 inside the second slide groove 614 can limit the moving position of the second guide plate 69, and the sliding of the first slider 612 inside the first groove 611 can limit the moving position of the third guide plate 610, so that when the gas inside the pipeline changes, the positions of the third guide plate 610, the second guide plate 69 and the first guide plate 68 change accordingly, thereby controlling the operation of the second warning light 65 and the third warning light 66. By observing the operation of the warning light, the blocked area of ​​the ventilation duct can be quickly determined, the determination efficiency is high, and it is convenient to clean in time, thereby ensuring the filtering, ventilation and purification effect, wind speed and air volume of the device;

[0078] When the first connecting shaft 61 rotates, it drives the second gear 71 to move. The rotation of the second gear 71 drives the third gear 72 to rotate, and then drives the second connecting shaft 73 to rotate. That is, when the first pull rope 62 is wrapped around the surface of the first connecting shaft 61, the eighth pull rope 722 can be wrapped around the surface of the second connecting shaft 73. When the rotation of the first connecting shaft 61 pulls the first insulating rod 63 and the first guide plate 68 to move through the first pull rope 62, the rotation of the second connecting shaft 73 pulls the first balancing block 75 and the first balancing rod 78 to move through the eighth pull rope 722, and the gravity of the first counterweight block 618 and the fourth counterweight block 719 are the same, so that the force during the rotation of the first connecting shaft 61 tends to be balanced, reducing the resistance during the rotation of the first connecting shaft 61. When the second guide plate 69 moves synchronously, the first balance block 75 drives the second balance block 76 to move synchronously. Since the gravity of the sixth counterweight block 721 and the second counterweight block 619 are the same, the force of the first connecting shaft 61 during the rotation process is further balanced. When the first guide plate 68 drives the second guide plate 69 and the third guide plate 610 to move synchronously, the first balance block 75 drives the second balance block 76 and the third balance block 77 to move synchronously, and the gravity of the third counterweight block 620 and the fifth counterweight block 720 are the same, which can once again balance the force of the first connecting shaft 61 during the rotation process and reduce the resistance of the first connecting shaft 61 during the rotation process, which is beneficial to making the force of the first connecting shaft 61 during the rotation process close to balance and reducing the resistance of the first connecting shaft 61 during the rotation process.

[0079] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A warm-pass filtering ventilation device, comprising a transfer box (2), a main ventilation duct (1) is inserted into the upper surface of the transfer box (2), and a first branch pipe (3) and a second branch pipe (4) are inserted into the surface of the main ventilation duct (1); Features: The first branch pipe (3) and the second branch pipe (4) are both provided with a transmission assembly (5), and each group of the transmission assembly (5) comprises a first gear (51), a rectangular frame (53), a main rotating shaft (54), a perforated air plate (56), a first connecting guide rod (511), a first tooth plate (512), and a second tooth plate (513); The surfaces of the first branch pipe (3) and the second branch pipe (4) are respectively provided with branch pipe identification components (6), and each group of the branch pipe identification components (6) comprises a first connecting shaft (61), a first pull rope (62), a first insulating rod (63), a second warning light (65), a third warning light (66), a first guide plate (68), a second guide plate (69), a third guide plate (610), a first counterweight block (618), a second counterweight block (619), a third counterweight block (620), a first bracket (624) and a second bracket (625); A balanced force component (7) is disposed on the surface of each of the first connecting shafts (61), and the balanced force component (7) comprises a second gear (71), a third gear (72), a second connecting shaft (73), a first balancing block (75), a second balancing block (76), a third balancing block (77), a first balancing rod (78), a fourth counterweight block (719), a fifth counterweight block (720) and a sixth counterweight block (721); A main pipe determination assembly (8) is provided on the surface of the second branch pipe (4), and the main pipe determination assembly (8) comprises a first single-side guide rod (84), a middle guide rod (85), a second single-side guide rod (87), a first spring (88) and an auxiliary conductor pressing block (810).

2. The warm pass filtering ventilation device according to claim 1, characterized in that: A perforated air plate (56) is arranged inside the first branch pipe (3), and a main rotating shaft (54) is fixedly connected to the upper end of the perforated air plate (56). First bearings (55) are respectively sleeved on the surfaces of both ends of the main rotating shaft (54). The first bearing (55) is installed in a through hole 1 opened inside the first branch pipe (3). The main rotating shaft (54) is rotatably connected to the first branch pipe (3) through the first bearing (55). A rectangular frame (53) is installed on the surface of the first branch pipe (3). One end of the main rotating shaft (54) extends to the outside of the first branch pipe (3) and is inserted into a through hole 2 opened on the surface of the rectangular frame (53). The main rotating shaft (54) and the rectangular frame (53) are connected to each other. The rectangular frame (53) is rotatably connected to the main rotating shaft (54); a second tooth plate (513) and a first tooth plate (512) are arranged inside the rectangular frame (53); the second tooth plate (513) and the first tooth plate (512) are both slidably connected to the rectangular frame (53); a first gear (51) is arranged between the first gear plate (512) and the second gear plate (513); the first gear (51) is sleeved on the surface of the main rotating shaft (54) and is fixedly connected to the main rotating shaft (54); the first tooth plate (512) and the second tooth plate (513) are both meshedly connected to the first gear (51); and a first connecting guide rod (511) is fixedly connected to the top end of the second tooth plate (513).

3. The warm pass filtering ventilation device according to claim 1, characterized in that: The upper surface of the first branch pipe (3) is fixedly connected to an upper box body (82), the upper surface of the upper box body (82) is equipped with a first warning light (81), a storage battery (83) is installed inside the upper box body (82), a middle guide rod (85) is arranged inside the upper box body (82), a support plate (86) is fixedly connected to the bottom surface of the middle guide rod (85), the bottom end of the support plate (86) is fixedly connected to the upper box body (82), and a first single-side guide rod (84) and a second single-side guide rod (86) are fixedly connected inside the upper box body (82) in a symmetrical manner. The side guide rod (87), the middle guide rod (85) is located between the first single-side guide rod (84) and the second single-side guide rod (87), the bottom surface of the upper box body (82) is provided with a slot matching the first tooth plate (512) and the second tooth plate (513), the first tooth plate (512) and the second tooth plate (513) are respectively inserted into the slots provided on the bottom surface of the upper box body (82), the first tooth plate (512) and the second tooth plate (513) are respectively slidably connected to the upper box body (82), and the first connecting guide rod (511) is located inside the upper box body (82).

4. The warm pass filtering ventilation device according to claim 1, characterized in that: An auxiliary conductor pressing block (810) and a first spring (88) are arranged in rectangular grooves (89) respectively formed at two ends of the middle guide rod (85); two ends of the first spring (88) are respectively fixedly connected to the middle guide rod (85) and the auxiliary conductor pressing block (810); and the auxiliary conductor pressing block (810) and the middle guide rod (85) are slidably connected.

5. The warm pass filtering ventilation device according to claim 1, characterized in that: A first box body (67) is provided on one side of the first branch pipe (3), a first connecting block (64) is provided between the first box body (67) and the first branch pipe (3), two ends of the first connecting block (64) are fixedly connected to the first branch pipe (3) and the first box body (67) respectively, a third warning light (66) and a second warning light (65) are installed on the upper surface of the first box body (67), a first connecting shaft (61) is fixedly connected to a side of the first gear (51) away from the main rotating shaft (54), one end of the first connecting shaft (61) passes through the rectangular frame (53) and extends to the outside of the rectangular frame (53), the first connecting shaft (61) and the rectangular frame (53) are rotatably connected, a first pull rope (62) is fixedly connected to the surface of the first connecting shaft (61), and a first connecting shaft (61) is provided inside the first box body (67). A guide plate (68), one side of which is fixedly connected with a first insulating rod (63), the first insulating rod (63) is inserted into a rectangular groove provided on the surface of a first box body (67), and is slidably connected with the first box body (67), the surface of the first insulating rod (63) is sleeved with a second guide plate (69) and a third guide plate (610), the second guide plate (69) is located between the third guide plate (610) and the first guide plate (68), and the second guide plate (69) and the third guide plate (610) are both slidably connected with the first insulating rod (63), the third guide plate (610), the second guide plate (69) and the first guide plate (68) are all slidably connected inside the first box body (67), and one end of the first insulating rod (63) away from the first guide plate (68) is fixedly connected with one end of a first pull rope (62).

6. The warm pass filtering ventilation device according to claim 5, characterized in that: The bottom surface of the first box body (67) is fixedly connected to a first long L-shaped rod (615), and a first counterweight (618) is slidingly sleeved on the surface of the first long L-shaped rod (615). A fourth pull rope (623) is arranged in a first square groove opened on one side of the first box body (67), and two ends of the fourth pull rope (623) are respectively fixedly connected to the upper surface of the first counterweight (618) and one side of the first guide plate (68). A first bracket (624) and a second bracket (625) are fixedly connected to one side of the first box body (67), and the first bracket (624) is located inside the second bracket (625). The bottom surface of the first bracket (624) is fixedly connected to a first middle L-shaped rod (616), and a second counterweight (619) is slidingly sleeved on the surface of the first middle L-shaped rod (616). The bottom surface of the second bracket (625) is fixedly connected to a first short An L-shaped rod (617), a surface sliding sleeve of the first short L-shaped rod (617) is provided with a third counterweight (620), and a third pull rope (622) is provided in two second square grooves opened on one side of the first box body (67), and the two ends of each of the third pull ropes (622) are respectively fixedly connected to one side of the second guide plate (69) and the upper surface of the second counterweight (619), and the third pull rope (622) passes through the first through hole opened on the surface of the first guide plate (68), and a second pull rope (621) is provided in two third party grooves opened on one side of the first box body (67), and the two ends of the second pull rope (621) are respectively fixedly connected to one side of the third guide plate (610) and the upper surface of the third counterweight (620), and the second pull rope (621) passes through the second through hole opened on the surface of the first guide plate (68) and the third through hole opened on the surface of the second guide plate (69).

7. The warm pass filtering ventilation device according to claim 5, characterized in that: A first sliding block (612) is inserted into a first groove (611) provided inside the first box body (67); the first sliding block (612) is slidably connected to the first box body (67); the first sliding block (612) is fixedly connected to the surface of the third guide plate (610); a second sliding groove (614) connected to the inside of the first groove (611) is provided inside the first box body (67); a second sliding block (613) is fixedly connected to the surface of the second guide plate (69); the second sliding block (613) is inserted into the inside of the second sliding groove (614) and is slidably connected to the first box body (67).

8. The warm pass filtering ventilation device according to claim 1, characterized in that: The end of the first connecting shaft (61) away from the first gear (51) is fixedly connected to the second gear (71), the surface of the second gear (71) is meshingly connected to the third gear (72), and the center position of one side of the third gear (72) is fixedly connected to the second connecting shaft (73), the surface of the second connecting shaft (73) is sleeved with a second bearing (74), the second connecting shaft (73) is rotatably connected to the surface of the rectangular frame (53) through the second bearing (74), and the surface of the second connecting shaft (73) is fixedly connected to one end of the eighth pull rope (722).

9. The warm pass filtering ventilation device according to claim 1, characterized in that: A second box (712) is arranged on one side of the first branch pipe (3) close to the first box (67); the second box (712) and the first branch pipe (3) are fixedly connected; a first balancing block (75), a second balancing block (76) and a third balancing block (77) are arranged inside the second box (712); the first balancing block (75), the second balancing block (76) and the third balancing block (77) are all slidably connected to the second box (712); the second balancing block (76) is located between the first balancing block (75) and the third balancing block (77); A first balancing rod (78) is inserted into a square through groove opened inside the second balancing block (76) and the third balancing block (77), and the first balancing rod (78) is slidably connected inside the second balancing block (76) and the third balancing block (77), and one end of the first balancing rod (78) is fixedly connected to the first balancing block (75), and the other end of the first balancing rod (78) passes through the second box body (712) and is fixedly connected to one end of the eighth pull rope (722) away from the second connecting shaft (73), and the first balancing rod (78) is slidably connected to the second box body (712).

10. The warm pass filtering ventilation device according to claim 9, characterized in that: The bottom surface of the second box (712) is fixedly connected with a second long L-shaped rod (716), and a fourth counterweight (719) is slidingly sleeved on the surface of the second long L-shaped rod (716). A fifth pull rope (79) is arranged in a fourth square groove opened on one side of the second box (712), and two ends of the fifth pull rope (79) are respectively fixedly connected to the fourth counterweight (719) and the first balance block (75). A fourth bracket (715) and a third bracket (714) are fixedly connected to one side of the second box (712), and the fourth bracket (715) is located inside the third bracket (714). The bottom surface of the fourth bracket (715) is fixedly connected with a second middle L-shaped rod (717), and a sixth counterweight (721) is slidingly sleeved on the surface of the second middle L-shaped rod (717). Two fifth square grooves opened on one side of the second box (712) are respectively provided with A sixth pull rope (710) is arranged, and the two ends of the sixth pull rope (710) are respectively fixedly connected to the sixth counterweight (721) and the second balance block (76), and the two sixth pull ropes (710) respectively penetrate the two fourth through holes opened on the surface of the first balance block (75), and the bottom surface of the third bracket (714) is fixedly connected to the second short L-shaped rod (718), and the surface of the second short L-shaped rod (718) is slidably sleeved with the fifth counterweight (720), and the two sixth square grooves opened on one side of the second box body (712) are respectively provided with seventh pull ropes (711), and the two ends of the seventh pull rope (711) are respectively fixedly connected to the fifth counterweight (720) and the third balance block (77), and the seventh pull rope (711) respectively penetrates the fifth through hole opened on the surface of the first balance block (75) and the sixth through hole opened on the surface of the second balance block (76).

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