A closed valve for ventilation and air conditioning

Abstract

The present invention relates to the technical field of sealing valves, and discloses a sealing valve for ventilation and air conditioning, which solves the problem that the baffle in the sealing valve needs to be manually rotated, resulting in a low degree of automation of the sealing valve, and at the same time, the air-conditioning duct will bring in dust during ventilation, which will cause the dust to enter the air-conditioning through the sealing valve, thereby affecting the service life of the air-conditioning. The sealing valve comprises a sealing valve body, a cavity is provided in the middle position of the sealing valve body, a receiving groove 1 is provided at the top of the sealing valve body, and a receiving groove 2 is provided on one side of the cavity, and the cavity and the receiving groove 2 are connected by connecting holes provided at equal distances, and four rotating doors are provided in sequence from top to bottom inside the cavity; the design realizes the intelligent opening and closing of the sealing valve, avoids manual opening, and realizes the cleaning of the filter screen, thereby improving the ventilation performance of the sealing valve after opening, effectively reducing the entry of dust into the air-conditioning, and thereby realizing the protection of the air-conditioning.

Description

Technical Field

[0001] The present invention belongs to the technical field of airtight valves, and in particular relates to an airtight valve for ventilation and air conditioning. Background Art

[0002] The closed valve device for ventilation and air conditioning is a sealing device used in the air conditioning and ventilation process, which can seal the air conditioning pipe. It is widely used in the field of sealing devices. The existing closed valve device for ventilation and air conditioning includes a valve body, a working chamber is provided in the valve body, and a baffle is provided in the working chamber. This closed valve device for ventilation and air conditioning needs to be manually rotated to realize the rotation of the baffle when in use, so as to achieve the sealing and opening of the working chamber, thereby realizing the opening or sealing of the air conditioning pipe.

[0003] This closed valve device for ventilation and air conditioning has a low degree of automation because the baffle needs to be rotated manually. At the same time, dust will be brought into the air conditioning duct during ventilation, and the dust will enter the air conditioner through the closed valve, which will affect the service life of the air conditioner. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a closed valve for ventilation and air conditioning, which effectively solves the problem in the above background technology that the baffle in the closed valve needs to be manually rotated, resulting in a low degree of automation of the closed valve, and at the same time, the air-conditioning pipe will bring in dust during ventilation, which will cause the dust to enter the air conditioner through the closed valve, thereby affecting the service life of the air conditioner.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a sealing valve for ventilation and air conditioning, comprising a sealing valve body, wherein a cavity is formed in the middle position of the sealing valve body, a receiving groove 1 located above the cavity is formed at the top of the sealing valve body, a receiving groove 2 located on one side of the cavity is formed on the sealing valve body, the cavity and the receiving groove 2 are connected by connecting holes provided at equal distances, the interior of the cavity is sequentially provided with four rotating doors from top to bottom, the four rotating doors are tightly connected, a rotating shaft is installed in the middle position of the rotating door, one end of the rotating shaft passes through the connecting hole and extends to the interior of the receiving groove 2, and one end of the rotating shaft is provided with a bevel gear 1, the four bevel gears 1 are connected by an opening and closing linkage, a fixing block is installed on the inner wall of the cavity, a filter screen is provided on the fixing block, dust cleaning mechanisms are symmetrically provided on both sides of the filter screen, and a driving mechanism connected with the opening and closing linkage and the dust cleaning mechanism is provided inside the receiving groove 1;

[0006] The driving mechanism includes a dual-axis motor, a worm, a transmission shaft, a worm gear and a transmission unit. A dual-axis motor is installed on one side of the inner bottom end of the accommodating groove, and the dual-axis motor is connected to the opening and closing linkage. A worm is installed at the inner bottom end of the accommodating groove. A pulley is provided on the worm and one of the output shafts of the dual-axis motor. The two pulleys are connected by a connecting belt. A transmission shaft is installed on the inner wall of the accommodating groove. A worm gear is provided on the transmission shaft. The worm gear is meshed with the worm, and a transmission unit connected to the dust cleaning mechanism is provided on the transmission shaft.

[0007] Preferably, both sides of the rotating door are provided with stop plates arranged symmetrically with respect to the center, the inner wall of the cavity is provided with a sliding opening slidably connected to the stop plate, the sliding opening is an arc structure, and the cross section of the stop plate is a triangular structure.

[0008] Preferably, the opening and closing linkage includes a rotating shaft and a bevel gear four, the other output shaft of the dual-axis motor is connected to the rotating shaft, the rotating shaft is installed inside the accommodating groove two, and bevel gear four is installed on the rotating shaft at equal distances, there are four bevel gears four, and bevel gear four is meshed with bevel gear one.

[0009] Preferably, the dust cleaning mechanism includes a mobile box, a storage box, a cleaning brush plate, an opening, a lifting member and a blowing group. The mobile boxes are symmetrically provided on both sides of the filter screen. The bottom end of the mobile box close to the rotating door is installed with a storage box. The two mobile boxes are installed with a cleaning brush plate on the side close to the filter screen. The cleaning brush plate is slidably connected to the filter screen, and the two mobile boxes are connected to the transmission unit through the lifting member, and the two mobile boxes are provided with a blowing group connected to the transmission unit.

[0010] Preferably, the transmission unit includes two worm barrels, bevel gear 2, bevel gear 3 and a pushing group. The two worm barrels are fixedly connected to the transmission shaft. Bevel gear 2 and bevel gear 3 are respectively provided on the side away from each other of the two worm barrels, and bevel gear 2 and bevel gear 3 are both installed on the outside of the transmission shaft, and a pushing group is provided inside the accommodating groove 1.

[0011] Preferably, the lifting member includes a thread groove and a screw rod. A thread groove is provided on both movable boxes. A screw rod is rotatably installed on the cavity. The screw rod is inserted into the interior of the thread groove and is threadedly connected to the thread groove. The top of the thread groove is provided with a bevel gear five that is meshed with bevel gear two and bevel gear three.

[0012] Preferably, the blowing group includes a worm shaft, a mounting shaft, a second pulley, a second connecting belt, a suction fan, a transmission member and a blowing fan. A worm shaft and a mounting shaft located on one side of the worm shaft are installed on the inner wall of the mobile box. The worm shaft and the mounting shaft are both sleeved with a second pulley, and the two pulleys are connected by a second connecting belt. One end of one of the worm shafts and one of the mounting shafts is provided with a suction fan, and the suction fan is located in the mobile box near the side of the rotating door. The other worm shaft and one end of the mounting shaft are both provided with a blowing fan. The suction fan and the blowing fan are both arranged near the opening, and the two worm shafts are connected to the pushing group through a transmission member.

[0013] Preferably, the transmission member includes a rotating rod, a rotating cylinder, a limit block, a limit groove and a worm gear three. The rotating rod is installed at the top of the accommodating groove one, and a rotating cylinder sleeved on the outside of the rotating rod is rotatably installed on the movable box. The bottom end of the rotating cylinder is provided with a worm gear three meshing with the worm shaft, and the bottom end of the rotating rod is symmetrically provided with a limit block, and the inner wall of the rotating cylinder is provided with a limit groove slidably connected to the limit block.

[0014] Preferably, the pushing group includes an electric push rod, a push plate, a sleeve, a ring, a worm gear 2, a clip and a slot. The inner top of the accommodating slot 1 is equipped with an electric push rod, the electric push rod is connected to the push plate, the outer side of the rotating rod is provided with a sleeve, the bottom end of the sleeve is provided with a worm gear 2 meshing with the worm barrel, the outer side of the sleeve is provided with a ring connected to the push plate, the outer wall of the rotating rod is symmetrically provided with clips, and the inner wall of the sleeve is provided with a slot slidably connected to the clip.

[0015] Preferably, the limiting block, limiting groove, clamping strip and clamping groove are all rectangular structures.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) During operation, the airtight valve body, the cavity, the first receiving slot, the second receiving slot, the rotating door, the rotating shaft, the connecting hole, the first bevel gear and the driving mechanism are provided to provide power for the rotation of the rotating door, thereby facilitating the opening of the cavity and realizing the intelligent opening and closing of the airtight valve, thereby avoiding manual opening. At the same time, power is provided for the dust cleaning mechanism, thereby facilitating the scraping operation of the filter, realizing the cleaning of the filter, improving the cleanliness of the filter, and improving the ventilation performance of the airtight valve after opening. At the same time, the filter can block dust, reducing the dust from entering the air conditioner, thereby protecting the air conditioner;

[0018] (2) Through the design of the rotating shaft and the bevel gear 4, it is easy to realize the synchronous rotation of the four rotating doors, realize the opening and closing operation of the cavity, and then realize the intelligent opening and closing control of the closed valve;

[0019] (3) The design of the moving box, the storage box, the cleaning brush plate, the opening, the lifting member and the blowing group facilitates the downward movement of the moving box when it is opened, thereby facilitating the cleaning brush plate to scrape the filter screen, thereby cleaning the filter screen, and simultaneously realizing the rotation of the suction fan and the blowing fan, thereby facilitating the blowing fan to blow dust toward the suction fan, and allowing the suction fan to suck the dust into the storage box for collection, thereby realizing the dust collection operation;

[0020] (4) The electric push rod, push plate, sleeve, collar, worm gear 2, card strip and card slot effectively provide the possibility for the action of the blowing group, so that the suction fan and the blowing fan can be rotated when the rotating door is opened, and the suction fan and the blowing fan are not operated when the rotating door is closed. This design facilitates the blowing of dust in one direction toward the rotating door, thereby protecting the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0022] In the attached figure:

[0023] Figure 1 This is a schematic structural diagram of a closed valve for ventilation and air conditioning according to the present invention;

[0024] Figure 2 For the present invention Figure 1 Schematic diagram of the side section structure;

[0025] Figure 3 For the present invention Figure 2 Schematic diagram of the side section structure;

[0026] Figure 4 It is a schematic diagram of a partial top view of the dust cleaning mechanism of the present invention;

[0027] Figure 5 For the present invention Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 6 For the present invention Figure 3 Schematic diagram of the enlarged structure at B in the middle;

[0029] Figure: 1. Sealed valve body; 2. Cavity; 3. Accommodating slot 1; 4. Accommodating slot 2; 5. Rotating door; 6. Rotating shaft; 7. Connecting hole; 8. Bevel gear 1; 9. Stop plate; 10. Slide; 11. Fixed block; 12. Filter; 13. Dual-shaft motor; 14. Worm 1; 15. Transmission shaft; 16. Worm gear 1; 17. Pulley 1; 18. Connecting belt 1; 19. Worm cylinder; 20. Bevel gear 2; 21. Bevel gear 3; 22. Rotating shaft; 23. Bevel gear 4; 24. Moving box; 25. Storage box; 26. Cleaning brush plate; 27. Bevel gear five; 28. Bevel gear six; 29. ​​Electric push rod; 30. Push plate; 31. Sleeve; 32. Ring; 33. Worm gear two; 34. Rotating rod; 35. Rotating cylinder; 36. Screw; 37. Threaded groove; 38. Limit block; 39. Limit groove; 40. Worm gear three; 41. Worm shaft; 42. Mounting shaft; 43. Pulley two; 44. Connecting belt two; 45. Suction fan; 46. Opening; 47. Card strip; 48. Card slot; 49. Blowing fan. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Embodiment 1, by Figures 1 to 6 The present invention includes a sealed valve body 1, a cavity 2 is provided in the middle position of the sealed valve body 1, a receiving groove 3 is provided at the top of the sealed valve body 1, and a receiving groove 2 4 is provided on one side of the cavity 2. The cavity 2 and the receiving groove 2 4 are communicated by a connecting hole 7 provided at equal distances. The interior of the cavity 2 is provided with four rotating doors 5 in sequence from top to bottom. The four rotating doors 5 are tightly connected. A rotating shaft 6 is installed in the middle position of the rotating door 5. One end of the rotating shaft 6 passes through the connecting hole 7 and extends to the interior of the receiving groove 2 4, and one end of the rotating shaft 6 is provided with a bevel gear 1 8. The four bevel gears 8 are connected by an opening and closing linkage. A fixed block 11 is installed on the inner wall of the cavity 2, and a filter screen 12 is provided on the fixed block 11. Dust cleaning mechanisms are symmetrically provided on both sides of the filter screen 12. A driving mechanism connected to the opening and closing linkage and the dust cleaning mechanism is provided inside the receiving groove 3.

[0032] The driving mechanism includes a dual-axis motor 13, a worm 14, a transmission shaft 15, a worm gear 16 and a transmission unit. The dual-axis motor 13 is installed on one side of the inner bottom end of the accommodating groove 3. The dual-axis motor 13 is connected to the opening and closing linkage. The inner bottom end of the accommodating groove 3 is installed with a worm 14. The worm 14 and one of the output shafts of the dual-axis motor 13 are both provided with a pulley 17. The two pulleys 17 are connected by a connecting belt 18. The inner wall of the accommodating groove 3 is installed with a transmission shaft 15. The transmission shaft 15 is provided with a worm gear 16. The worm gear 16 is meshed with the worm 14. The transmission shaft 15 is provided with a transmission unit connected to the dust cleaning mechanism. The rotating door 5 Both sides of the cavity 2 are provided with a stop plate 9 arranged symmetrically with the center, and the inner wall of the cavity 2 is provided with a sliding opening 10 that is slidably connected to the stop plate 9. The sliding opening 10 is an arc-shaped structure, and the cross-section of the stop plate 9 is a triangular structure. Through the design of the stop plate 9 and the sliding opening 10, the connection tightness between the two adjacent rotating doors 5 is effectively improved; the opening and closing linkage includes a rotating shaft 22 and a bevel gear four 23, and the other output shaft of the dual-axis motor 13 is connected to the rotating shaft 22. The rotating shaft 22 is installed inside the accommodating groove 24, and bevel gears four 23 are installed at equal distances on the rotating shaft 22. There are four bevel gears four 23, and the bevel gear four 23 is meshed with the bevel gear one 8;

[0033] By starting the dual-axis motor 13, the dual-axis motor 13 drives the rotating shaft 22 to rotate, and the rotating shaft 22 drives the bevel gear four 23 to rotate. Through the meshing connection relationship between the bevel gear four 23 and the bevel gear one 8, the bevel gear one 8 will rotate, and the bevel gear one 8 will drive the rotating shaft 6 to rotate, and then the rotating shaft 6 will realize the rotation of the four rotating doors 5, and realize the maximum rotation of the rotating door 5 to ninety degrees, thereby realizing the opening of the cavity 2, facilitating the ventilation of the cavity 2, and when the rotating door 5 is flipped to the vertical state, the four rotating doors 5 are tightly connected, thereby realizing the closure of the cavity 2, and realizing the closure of the sealing valve. Operation, at the same time, the dual-axis motor 13 will drive one of the pulleys 17 to rotate, and through the connection relationship of the connecting belt 18, the other pulley 17 will rotate, and then the pulley 17 will drive the worm 14 to rotate, and through the meshing connection relationship between the worm 14 and the worm wheel 16, the worm wheel 16 will rotate, and the worm wheel 16 drives the transmission shaft 15 to rotate, and then the dust cleaning mechanism is realized through the transmission unit, which effectively scrapes and collects the dust on the filter 12, thereby improving the cleanliness of the filter 12, and improving the ventilation performance of the filter 12 after the sealing valve is opened.

[0034] Example 2, based on Example 1, Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6The dust cleaning mechanism includes a mobile box 24, a storage box 25, a cleaning brush plate 26, an opening 46, a lifting member and a blowing group. The mobile boxes 24 are symmetrically provided on both sides of the filter 12. The bottom end of the mobile box 24 close to the rotating door 5 is installed with a storage box 25. The two mobile boxes 24 are installed with a cleaning brush plate 26 on the side close to the filter 12. The cleaning brush plate 26 is slidably connected to the filter 12, and the two mobile boxes 24 are connected to the transmission unit through a lifting member, and the two mobile boxes 24 are provided with a blowing group connected to the transmission unit. The transmission unit includes two worm barrels 19, a bevel gear 20, a bevel gear 3 21 and a pushing group. Two worm barrels 19 are fixedly connected to the driving shaft 15. The two worm barrels 19 are respectively provided with a bevel gear 20 and a bevel gear 3 21 on the side away from each other, and the bevel gear 20 and the bevel gear 3 21 are both installed on the outside of the transmission shaft 15. A pushing group is provided inside the accommodating groove 3. The lifting member includes a thread groove 37 and a screw rod 36. The two moving boxes 24 are provided with a thread groove 37. The screw rod 36 is rotatably installed on the cavity 2. The screw rod 36 is inserted into the interior of the thread groove 37 and is threadedly connected to the thread groove 37. The top of the thread groove 37 is provided with a bevel gear 5 27 that is meshed with the bevel gear 20 and the bevel gear 3 21.

[0035] When the worm gear 16 rotates and drives the transmission shaft 15 to rotate, the transmission shaft 15 will realize the rotation of the worm barrel 19, the bevel gear 2 20 and the bevel gear 3 21. Through the meshing connection relationship between the bevel gear 5 27 and the bevel gear 2 20 and the meshing connection relationship between the bevel gear 3 21 and the bevel gear 6 28, the bevel gear 5 27 and the bevel gear 6 28 will rotate in the opposite direction. Then the bevel gear 5 27 and the bevel gear 6 28 will drive the screw rod 36 to rotate. Through the threaded connection relationship between the screw rod 36 and the thread groove 37 and the meshing connection relationship between the filter screen 12 The sliding connection with the cleaning brush plate 26 will cause the movable box 24 to move downward on the screw rod 36, and then the movable box 24 will cause the cleaning brush plate 26 to slide downward on the filter 12, so that the cleaning brush plate 26 can scrape the filter 12, effectively cleaning the dust on the surface of the filter 12, thereby improving the cleanliness of the filter 12. At the same time, the cooperation between the blowing group and the pushing group makes it convenient for the blowing group to work when the rotating door 5 is opened, effectively facilitating the collection of dust, and the blowing group stops working during the closing process of the rotating door 5.

[0036] Example 3, based on Example 1, Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6The blowing group includes a worm shaft 41, a mounting shaft 42, a pulley 43, a connecting belt 44, a suction fan 45, a transmission member and a blowing fan 49. The inner wall of the mobile box 24 is installed with a worm shaft 41 and a mounting shaft 42 located on one side of the worm shaft 41. The worm shaft 41 and the mounting shaft 42 are both sleeved with a pulley 43. The two pulleys 43 are connected by a connecting belt 44. One end of one of the worm shafts 41 and the mounting shaft 42 is provided with a suction fan 45, and the suction fan 45 is located in the mobile box 24 near the side of the rotating door 5. The other worm shaft 41 and one end of the mounting shaft 42 are both provided with a suction fan 45. There is a blowing fan 49, and the suction fan 45 and the blowing fan 49 are both arranged near the opening 46, and the two worm shafts 41 are connected to the pushing group through a transmission member. The transmission member includes a rotating rod 34, a rotating cylinder 35, a limit block 38, a limit groove 39 and a worm gear three 40. The top of the accommodating groove 3 is installed with a rotating rod 34, and the rotating cylinder 35 is rotatably installed on the mobile box 24 and is sleeved on the outside of the rotating rod 34. The bottom end of the rotating cylinder 35 is provided with a worm gear three 40 engaged with the worm shaft 41. The bottom end of the rotating rod 34 is symmetrically provided with a limit block 38, and the inner wall of the rotating cylinder 35 is provided with a limit groove 39 slidably connected to the limit block 38;

[0037] The rotation of the worm barrel 19 will realize the rotation of the worm gear 2 33. Through the clamping relationship between the clamping strip 47 and the clamping groove 48, the worm gear 2 33 will drive the rotating rod 34 to rotate. Through the clamping effect of the threaded groove 37 and the limit block 38, the rotating rod 34 will drive the rotating barrel 35 to rotate. The rotating barrel 35 will drive the worm gear 3 40 to rotate. Through the meshing connection relationship between the worm gear 3 40 and the worm shaft 41, the worm shaft 41 will rotate. The worm shaft 41 drives the pulley 2 43 to rotate. Through the connection relationship between the connecting belt 2 44, the other pulley 2 43 will rotate, and then The rotation of the mounting shaft 42 is achieved, which in turn causes the worm shaft 41 and the mounting shaft 42 to drive the suction fan 45 and the blowing fan 49 to rotate, making it convenient for the blowing fan 49 to blow air toward the filter 12, so as to blow the dust toward the suction fan 45. At the same time, the suction fan 45 will suck the filter 12, thereby facilitating the dust to enter the movable box 24 through the opening 46, and then the dust will fall into the storage box 25, effectively realizing the collection of dust, improving the cleanliness of the filter 12, and solving the problem of low ventilation caused by the blockage of the filter 12 after long-term use.

[0038] Example 4, based on Example 1, Figure 1 、 Figure 2 、 Figure 3 and Figure 6It is given that the pushing group includes an electric push rod 29, a push plate 30, a sleeve 31, a collar 32, a worm gear 23, a clip 47 and a slot 48. The inner top of the accommodating slot 1 is equipped with an electric push rod 29, and the electric push rod 29 is connected to the push plate 30. The outer surface of the rotating rod 34 is sleeved with a sleeve 31, and the bottom end of the sleeve 31 is provided with a worm gear 23 engaged with the worm barrel 19. The outer surface of the sleeve 31 is sleeved with a collar 32 connected to the push plate 30. The outer wall of the rotating rod 34 is symmetrically provided with a clip 47, and the inner wall of the sleeve 31 is provided with a slot 48 slidably connected to the clip 47. The limit block 38, the limit slot 39, the clip 47 and the slot 48 are all rectangular structures.

[0039] By starting the electric push rod 29, the electric push rod 29 drives the push plate 30 to move downward, and the push plate 30 drives the collar 32 to move downward, and the collar 32 drives the sleeve 31 to move downward on the outside of the rotating rod 34, and then the sleeve 31 will drive the worm gear 2 33 to move downward, and the worm gear 2 33 is meshed with the worm barrel 19, thereby effectively facilitating the collection of dust. When the cleaning brush plate 26 moves to the bottom of the filter screen 12, the electric push rod 29 is started to drive the push plate 30 to move upward, and then the push plate 30 drives the collar 32 and the sleeve 31 to move upward, so that the worm gear 2 33 is disengaged from the meshing connection relationship with the worm barrel 19, and then the blowing group stops working when the dual-axis motor 13 is reversed, effectively facilitating the collection of dust by the blowing group.

[0040] Working principle: During operation, when the airtight valve needs to be opened, the cavity 2 is opened, and then the revolving door 5 needs to be turned over. Before the revolving door 5 turns over, the electric push rod 29 is first started, and the electric push rod 29 drives the push plate 30 to move downward, and the push plate 30 drives the collar 32 to move downward, and the collar 32 drives the sleeve 31 to move downward outside the rotating rod 34, and then the sleeve 31 drives the worm gear 33 to move downward, and the worm gear 33 is meshed with the worm barrel 19;

[0041] Then, the dual-axis motor 13 is started to rotate forward, and the dual-axis motor 13 drives the rotating shaft 22 to rotate, and the rotating shaft 22 drives the bevel gear 4 23 to rotate. Through the meshing connection relationship between the bevel gear 4 23 and the bevel gear 1 8, the bevel gear 1 8 is rotated, and the bevel gear 1 8 drives the rotating shaft 6 to rotate, and then the rotating shaft 6 realizes the rotation of the four rotating doors 5, and realizes the maximum rotation of the rotating doors 5 to 90 degrees, thereby realizing the opening of the cavity 2, and facilitating the ventilation of the cavity 2;

[0042] At the same time, the rotation of the transmission shaft 15 will realize the rotation of the worm barrel 19, the bevel gear 20 and the bevel gear 3 21. Through the meshing connection relationship between the bevel gear 5 27 and the bevel gear 2 20 and the meshing connection relationship between the bevel gear 3 21 and the bevel gear 6 28, the bevel gear 5 27 and the bevel gear 6 28 will rotate in opposite directions, and then the bevel gear 5 27 and the bevel gear 6 28 will drive the screw rod 36 to rotate. Through the threaded connection relationship between the screw rod 36 and the thread groove 37 and the sliding connection relationship between the filter screen 12 and the cleaning brush plate 26, the movable box 24 will move downward on the screw rod 36, and then the movable box 24 will cause the cleaning brush plate 26 to slide downward on the filter screen 12, so that the cleaning brush plate 26 scrapes the filter screen 12;

[0043] And because the worm barrel 19 is meshed with the worm gear 2 33, the rotation of the worm barrel 19 will realize the rotation of the worm gear 2 33, and the engagement relationship between the clamping strip 47 and the clamping groove 48 will cause the worm gear 2 33 to drive the rotating rod 34 to rotate, and the engagement effect between the threaded groove 37 and the limit block 38 will cause the rotating rod 34 to drive the rotating barrel 35 to rotate, and the rotating barrel 35 will drive the worm gear 3 40 to rotate, and the meshing connection relationship between the worm gear 3 40 and the worm shaft 41 will cause the worm shaft 41 to rotate, and the worm shaft 41 will drive the pulley 2 43 to rotate, and through the connection relationship between the connecting belt 2 44, the other belt The second wheel 43 rotates, thereby realizing the rotation of the mounting shaft 42, which in turn causes the worm shaft 41 and the mounting shaft 42 to drive the suction fan 45 and the blowing fan 49 to rotate, so that the blowing fan 49 blows air toward the filter 12, so that the dust is blown toward the suction fan 45. At the same time, the suction fan 45 sucks the filter 12, thereby facilitating the dust to enter the movable box 24 through the opening 46, and then the dust will fall into the storage box 25, effectively realizing the collection of dust, improving the cleanliness of the filter 12, and solving the problem of low ventilation caused by the blockage of the filter 12 after long-term use;

[0044] When the cleaning brush plate 26 moves to the bottom of the filter 12, the dual-axis motor 13 is stopped to keep the airtight valve open. When the airtight valve needs to be closed, the rotary door 5 needs to be rotated to a vertical state. At this time, the electric push rod 29 is started first to drive the push plate 30 to move upward, and then the push plate 30 drives the collar 32 and the sleeve 31 to move upward, so that the worm gear 33 is disengaged from the worm barrel 19, effectively disconnecting the drive to the blowing group, and then starting the dual-axis motor 13 to reverse, so as to facilitate the upward movement of the moving box 24, thereby not causing the blowing fan 49 and the suction fan 45 to reverse, and thus this design can only move the dust on the filter 12 to one side of the rotary door 5, realizing one-way movement of dust, preventing dust from entering the air conditioner, and thus protecting the air conditioner. This design realizes the cleaning of the dust on the surface of the filter 12, which can improve the cleanliness of the filter 12 and provide convenience for the collection of dust, thereby improving the ventilation performance of the filter 12, and thereby improving the ventilation performance of the airtight valve after opening.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A closed valve for ventilation and air conditioning, comprising a closed valve body (1), characterized in that: The sealed valve body (1) is provided with a cavity (2) in the middle, a receiving groove (3) located above the cavity (2) is provided at the top of the sealed valve body (1), a receiving groove (4) located on one side of the cavity (2) is provided on the sealed valve body (1), the cavity (2) and the receiving groove (4) are connected via connecting holes (7) provided at equal distances, four rotating doors (5) are provided in sequence from top to bottom in the cavity (2), the four rotating doors (5) are tightly connected, and a rotating door (5) is installed in the middle of the rotating door (5). A moving shaft (6), one end of the rotating shaft (6) passes through the connecting hole (7) and extends to the inside of the receiving groove (4), and one end of the rotating shaft (6) is provided with a bevel gear (8), and the four bevel gears (8) are connected by an opening and closing linkage. A fixed block (11) is installed on the inner wall of the cavity (2), and a filter (12) is provided on the fixed block (11). Dust cleaning mechanisms are symmetrically provided on both sides of the filter (12). A driving mechanism connected to the opening and closing linkage and the dust cleaning mechanism is provided inside the receiving groove (3); The driving mechanism includes a dual-axis motor (13), a worm (14), a transmission shaft (15), a worm wheel (16) and a transmission unit. The dual-axis motor (13) is installed on one side of the inner bottom end of the receiving groove (3). The dual-axis motor (13) is connected to the opening and closing linkage. The inner bottom end of the receiving groove (3) is installed with a worm (14). The worm (14) and one of the output shafts of the dual-axis motor (13) are both provided with a pulley (17). The two pulleys (17) are connected by a connecting belt (18). The inner wall of the receiving groove (3) is provided with a transmission shaft (15). The transmission shaft (15) is provided with a worm wheel (16). The worm wheel (16) is meshed with the worm (14). The transmission unit connected to the dust cleaning mechanism is provided on the transmission shaft (15). The dust cleaning mechanism comprises a moving box (24), a receiving box (25), a cleaning brush plate (26), an opening (46), a lifting member and a blowing group. The moving boxes (24) are symmetrically arranged on both sides of the filter (12). The bottom end of the moving box (24) close to the rotating door (5) is installed with a receiving box (25). The two moving boxes (24) are both installed with a cleaning brush plate (26) on the side close to the filter (12). The cleaning brush plate (26) is slidably connected to the filter (12). The two moving boxes (24) are both connected to the transmission unit through the lifting member, and the two moving boxes (24) are both provided with a blowing group connected to the transmission unit. The blowing group includes a worm shaft (41), a mounting shaft (42), a second pulley (43), a second connecting belt (44), a suction fan (45), a transmission member and a blowing fan (49). The inner wall of the mobile box (24) is installed with a worm shaft (41) and a mounting shaft (42) located on one side of the worm shaft (41). The worm shaft (41) and the mounting shaft (42) are both sleeved with a second pulley (43). The two second pulleys (43) are connected by a second connecting belt (44). One end of one worm shaft (41) and one mounting shaft (42) is provided with a suction fan (45), and the suction fan (45) is located in the mobile box (24) near the side of the rotating door (5). One end of the other worm shaft (41) and the mounting shaft (42) is provided with a blowing fan (49). The suction fan (45) and the blowing fan (49) are both arranged near the opening (46), and the two worm shafts (41) are connected to the pushing group through the transmission member. The transmission member includes a rotating rod (34), a rotating cylinder (35), a limiting block (38), a limiting groove (39) and a worm gear three (40). The top of the accommodating groove one (3) is provided with a rotating rod (34). The rotating cylinder (35) is rotatably installed on the movable box (24) and is sleeved on the outside of the rotating rod (34). The bottom end of the rotating cylinder (35) is provided with a worm gear three (40) meshingly connected to the worm shaft (41). The bottom end of the rotating rod (34) is symmetrically provided with a limiting block (38). The inner wall of the rotating cylinder (35) is provided with a limiting groove (39) slidably connected to the limiting block (38). The pushing group includes an electric push rod (29), a push plate (30), a sleeve (31), a collar (32), a worm gear 2 (33), a clamping strip (47) and a clamping groove (48). The inner top of the accommodating groove 1 (3) is equipped with an electric push rod (29), the electric push rod (29) is connected to the push plate (30), the outer sleeve of the rotating rod (34) is provided with a sleeve (31), the bottom end of the sleeve (31) is provided with a worm gear 2 (33) meshingly connected to the worm barrel (19), the outer sleeve (31) is provided with a collar (32) connected to the push plate (30), the outer wall of the rotating rod (34) is symmetrically provided with a clamping strip (47), and the inner wall of the sleeve (31) is provided with a clamping groove (48) slidably connected to the clamping strip (47).

2. The airtight valve for ventilation and air conditioning according to claim 1, characterized in that: Both sides of the rotating door (5) are provided with stop plates (9) arranged symmetrically with respect to the center. The inner wall of the cavity (2) is provided with a sliding opening (10) slidably connected to the stop plate (9). The sliding opening (10) is an arc-shaped structure, and the cross section of the stop plate (9) is a triangular structure.

3. The airtight valve for ventilation and air conditioning according to claim 1, characterized in that: The opening and closing linkage comprises a rotating shaft (22) and a bevel gear four (23). The other output shaft of the dual-shaft motor (13) is connected to the rotating shaft (22). The rotating shaft (22) is installed inside the accommodating groove two (4). Bevel gear four (23) is installed on the rotating shaft (22) at equal distances. There are four bevel gears four (23), and the bevel gear four (23) is meshed with the bevel gear one (8).

4. The airtight valve for ventilation and air conditioning according to claim 1, characterized in that: The transmission unit comprises two worm barrels (19), a bevel gear 2 (20), a bevel gear 3 (21) and a pusher group. The two worm barrels (19) are fixedly connected to the transmission shaft (15). The two worm barrels (19) are provided with a bevel gear 2 (20) and a bevel gear 3 (21) on the side away from each other, and the bevel gear 2 (20) and the bevel gear 3 (21) are both installed on the outside of the transmission shaft (15). The pusher group is provided inside the receiving groove 1 (3).

5. The airtight valve for ventilation and air conditioning according to claim 1, characterized in that: The lifting member includes a thread groove (37) and a screw rod (36). The thread groove (37) is provided on each of the two moving boxes (24). The screw rod (36) is rotatably mounted on the cavity (2). The screw rod (36) is inserted into the interior of the thread groove (37), and the screw rod (36) is threadedly connected to the thread groove (37). The top end of the thread groove (37) is provided with a bevel gear five (27) that is meshed with the bevel gear two (20) and the bevel gear three (21).

6. The airtight valve for ventilation and air conditioning according to claim 1, characterized in that: The limiting block (38), limiting groove (39), clamping strip (47) and clamping groove (48) are all rectangular structures.

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