Ceiling with movable shutters

Abstract

The ceiling comprises a locomotive mechanism, a shutter mechanism and a limiting mechanism, the locomotive mechanism comprises a shed and a ceiling body arranged on the top of the shed, and a ventilation opening is formed in the bottom of the ceiling body; the shutter mechanism comprises two vertical plates which are arranged on the top of the ceiling and located above the ventilation opening, a plurality of blades are sequentially and rotationally connected between the two vertical plates, and the tail portions of the blades are rotationally connected between the two vertical plates. The limiting mechanism comprises closing limiting pins which are arranged on the two vertical plates and located below the head portions of the blades, and opening limiting pins are arranged on the two vertical plates and located below the tail portions of the blades. And after the ventilator on the electric cabinet is closed, the blades abut against the closed limiting pins under the action of the gravity of the blades, the blades are closed, automatic opening and closing of the blades are achieved, and energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The invention relates to the field of locomotive shed production, and in particular to a ceiling with movable shutters. Background Art

[0002] The brake resistor cabinet on the locomotive is used to consume the feedback current when the locomotive brakes. The large amount of heat energy generated by this needs to be discharged outside the vehicle by a ventilator. Since the brake resistor cabinet itself has a relatively large structure, when placed inside the narrow locomotive, the air guide cover is often very compact, affecting the ventilation effect. Opening ventilation windows directly on the top of the locomotive will cause rainwater to enter, causing a series of safety hazards.

[0003] In the related art, an energy-saving cooling system for a diesel locomotive is proposed, including a radiator of a diesel engine, the radiator is located at the front end of the locomotive carriage, the bottom plane of the radiator is installed on the locomotive chassis surface, and the height of the radiator is lower than the lower plane of the ceiling of the locomotive fan room. A fan motor unit is arranged behind the radiator, and a shutter is arranged between the radiator and the fan motor unit. Each group of shutters includes a guide shutter and a side shutter, and the two groups of guide shutters are surrounded by a wedge shape, the tip of the wedge faces the radiator, and the side shutter is connected to the end of the guide shutter, and the fan motor unit is located in the space surrounded by the guide shutter and the side shutter. The shutter includes a window blade fixed to the shutter mounting shaft and rotating around it, and the axis of the shutter mounting shaft is perpendicular to the locomotive chassis surface. It also includes a pneumatic two-position angle valve for driving the shutter mounting shaft, the pneumatic two-position angle valve includes a valve body, a driving shaft located in the center and a driving leaf fixedly connected to the driving shaft, the valve body has a fan-shaped cavity, the driving leaf moves in the fan-shaped cavity and divides the fan-shaped cavity into a first air cavity and a second air cavity which are sealed respectively, the valve body has a first air hole corresponding to the position of the first air cavity and a second air hole corresponding to the position of the second air cavity, the first air hole and the second air hole are respectively connected to an intake pipe and an exhaust pipe, the intake pipe is connected to the locomotive air pipe, and the exhaust pipe is connected to the atmosphere. It also includes an intake solenoid valve and an exhaust solenoid valve for controlling the opening and closing of the intake pipe and the exhaust pipe, the intake solenoid valve and the exhaust solenoid valve are both two-position solenoid valves, the first air hole and the second air hole are respectively connected to the A port and the B port of the intake solenoid valve through the intake pipe, and the first air hole and the second air hole are respectively connected to the B port and the A port of the exhaust solenoid valve through the exhaust pipe.

[0004] Regarding the above-mentioned related technologies, there are the following defects: the opening and closing of the guide shutters and the side shutters need to be controlled by pneumatic angle valves and solenoid valves, which consumes a lot of energy and wastes resources. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and to provide a ceiling with movable shutters to solve the technical problem in the prior art that the opening and closing of the guide shutters and the side shutters need to be controlled by pneumatic angle valves and solenoid valves.

[0006] In order to achieve the above technical objectives, the technical solution of the present invention provides a ceiling with movable shutters, including a locomotive mechanism, the locomotive mechanism includes a carport and a ceiling arranged on the top of the carport, the ceiling is fixed to the carport through a fixing assembly, and a ventilating opening docking with an electric cabinet is provided at the bottom of the ceiling; The shutter mechanism comprises two vertical plates arranged on the top of the ceiling and above the vents, two overlapping plates are arranged on the other two sides of the ceiling, a plurality of blades are rotatably connected between the two vertical plates in sequence, and the tail of the blades is rotatably connected between the two vertical plates; and, The limiting mechanism comprises a closed limiting pin disposed on two vertical plates and located below the blade head for limiting the rotation of the blade, and an open limiting pin disposed on the two vertical plates and located below the blade tail for limiting the rotation of the blade.

[0007] In some embodiments, a rotating shaft is provided at the tail of the blade, a threaded shaft is provided between the two vertical plates, and the rotating shaft is rotatably connected to the threaded shaft.

[0008] In some embodiments, the blade head is provided with a lap joint, and the blade tail is provided with a lap groove for accommodating the lap joint.

[0009] In some embodiments, the vertical plate is arched, and a water guide groove is provided on the vertical plate, and the water guide groove is connected to the outlets at both ends of the overlapping groove.

[0010] In some embodiments, the fixing assembly includes a bolt seat arranged at the bottom of the ceiling, a pin shaft is rotatably connected to the bolt seat, a cotter pin is passed through the end of the pin shaft, the cotter pin abuts against the side wall of the bolt seat, a movable bolt is provided on the pin shaft, the movable bolt is used to be passed through the carport, a nut is threadedly connected to the movable bolt, and the nut is used to abut against the carport.

[0011] In some embodiments, a torsion spring is sleeved on the pin shaft, one end of the torsion spring is connected to the bolt seat, and the other end of the torsion spring is overlapped on the movable bolt, and the torsion spring makes the movable bolt tend to rotate toward the center of the ceiling.

[0012] In some embodiments, a gasket is sleeved on the pivot bolt, and the gasket is located between the nut and the carport.

[0013] In some embodiments, a filter is provided on the ceiling, and the filter is located between the blades and the vents.

[0014] In some embodiments, an impeller is rotatably connected to the ceiling below the filter, a brush is provided on the top of the impeller, and the brush abuts against the filter.

[0015] In some embodiments, an ash guide groove is provided on the impeller below the brush, the ash guide groove extends along the length direction of the impeller, the ash guide groove is inclined, and the ash guide groove gradually decreases from the middle of the impeller toward the periphery of the impeller. An ash collecting box is provided on the periphery of the impeller, and the outlet of the ash guide groove is connected to the top of the ash collecting box.

[0016] Compared with the prior art, the beneficial effects of the present invention include: when the ventilator on the electrical cabinet is ventilating, a large amount of airflow rushes into the vent, the airflow pushes open the blades, the blades abut on the opening limit pin, and the airflow is discharged out of the vehicle; when the ventilator on the electrical cabinet is turned off, the blades abut on the closing limit pin under the action of their own gravity, and the blades are closed, realizing automatic opening and closing of the blades, which is energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the ceiling provided by the present invention; Figure 2 is a cross-sectional view of the overall structure of the filter provided by the present invention; Figure 3 This is a schematic diagram of the overall structure of the fixing assembly provided by the present invention from a first perspective; Figure 4 is a second perspective overall structural diagram of the fixing assembly provided by the present invention; Figure 5 It is a schematic diagram of the overall structure of the blade provided by the present invention; Figure 6 It is a schematic diagram of the overall structure of the shutter mechanism provided by the present invention in an open state; Figure 7 It is a schematic diagram of the overall structure of the shutter mechanism provided by the present invention in a closed state; Description of reference numerals: 1. Locomotive mechanism; 12. Ceiling; 13. Ventilation port; 14. Filter; 15. Impeller; 16. Brush; 17. Ash guide chute; 18. Ash collecting box; 2. Fixing assembly; 21. Bolt seat; 22. Pin shaft; 23. Open pin; 24. Visible bolt; 25. Nut; 26. Torsion spring; 27. Gasket; 3. Shutter mechanism; 31. Vertical plate; 32. Lap plate; 33. Blade; 34. Rotating shaft; 35. Threaded shaft; 36. Lap joint; 37. Lap chute; 4. Limiting mechanism; 41. Closing limit pin; 42. Opening limit pin; 38. Water guide chute. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The present invention provides a ceiling with movable shutters, the structure of which is as follows: Figure 1 - Figure 7 As shown, it includes a locomotive mechanism 1, a shutter mechanism 3 and a limiting mechanism 4.

[0020] The locomotive mechanism 1 includes a carport and a ceiling 12 arranged on the top of the carport. The ceiling 12 is fixed to the carport through a fixing assembly 2. A vent 13 is provided at the bottom of the ceiling 12 to connect with the electric cabinet.

[0021] The shutter mechanism 3 includes two vertical plates 31 arranged on the top of the ceiling 12 and above the vent 13, and two overlapping plates 32 are arranged on the other two sides of the ceiling 12. A plurality of blades 33 are rotatably connected between the two vertical plates 31 in sequence, and the tails of the blades 33 are rotatably connected between the two vertical plates 31.

[0022] The limiting mechanism 4 includes a closing limiting pin 41 disposed on the two vertical plates 31 and located below the head of the blade 33 for limiting the rotation of the blade 33 , and an opening limiting pin 42 disposed on the two vertical plates 31 and located below the tail of the blade 33 for limiting the rotation of the blade 33 .

[0023] When in use, the vent 13 at the bottom of the ceiling 12 is connected to the electric cabinet inside the locomotive, providing a ventilation and heat dissipation channel for the electric cabinet. The blade 33 can rotate freely around the connecting shaft within a certain angle range. When the shutter needs to be closed, under the action of the gravity of the blade 33 itself, the blade 33 rotates downward until the head of the blade 33 contacts the closing limit pin 41. The closing limit pin 41 prevents the blade 33 from continuing to rotate downward, so that the shutter is in a closed state, preventing external debris, rainwater, etc. from entering the vent 13. When the shutter needs to be opened, under the action of the airflow generated by the ventilator, the blade 33 rotates upward until the tail of the blade 33 contacts the opening limit pin 42. The opening limit pin 42 prevents the blade 33 from continuing to rotate upward, so that the shutter is in a maximum open state, ensuring that the ventilation volume of the vent 13 reaches the maximum.

[0024] In the present invention, when the ventilator on the electrical cabinet is ventilated, a large amount of airflow rushes into the vent 13, the airflow pushes open the blade 33, the blade 33 abuts on the opening limit pin 42, and the airflow is discharged out of the vehicle; when the ventilator on the electrical cabinet is turned off, the blade 33 abuts on the closing limit pin 41 under the action of its own gravity, and the blade 33 is closed, realizing the automatic opening and closing of the blade 33, which is energy-saving and environmentally friendly.

[0025] To facilitate the rotation of blade 33, please refer to Figure 1 In a preferred embodiment, a rotating shaft 34 is provided at the tail of the blade 33 , a threaded shaft 35 is provided between the two vertical plates 31 , and the rotating shaft 34 is rotatably connected to the threaded shaft 35 .

[0026] When in use, when an external force acts on the blade 33, the rotating shaft 34 at the tail of the blade 33 starts to rotate on the threaded shaft 35. Due to the rotational connection relationship between the rotating shaft 34 and the threaded shaft 35, the rotating shaft 34 can rotate around the axis of the threaded shaft 35. The rotational connection structure between the rotating shaft 34 at the tail of the blade 33 and the threaded shaft 35 between the two vertical plates 31 enables the blade 33 to rotate flexibly when needed, thereby adjusting the ventilation volume of the vent 13, providing suitable ventilation and heat dissipation conditions for the electric cabinet inside the locomotive, and adapting to different external environments.

[0027] In order to improve the airtightness and stability of the blade 33 when it is closed, please refer to Figure 5 In a preferred embodiment, a lap joint 36 is provided at the head of the blade 33 , and a lap groove 37 for accommodating the lap joint 36 is provided at the tail of the blade 33 .

[0028] When in use, as the closing operation proceeds, each blade 33 begins to rotate around the rotating shaft 34. The blade 33 gradually changes from a tilted or open state to a horizontal or nearly horizontal state. As the blade 33 rotates, the head and tail of the adjacent blades 33 gradually approach each other. The lap joint 36 at the head of the blade 33 moves toward the lap groove 37 at the tail of the adjacent blade 33. When the blade 33 is fully closed, the lap joint 36 at the head of a blade 33 is just inserted into the lap groove 37 at the tail of the adjacent blade 33. The lap joint 36 and the lap groove 37 are tightly matched to form a continuous closed structure. The cooperation between the lap joint 36 and the lap groove 37 can effectively prevent external rainwater, dust, debris, etc. from entering the vent 13 through the gaps between the blades 33. This structure improves the sealing of the shutter in the closed state and protects the electric cabinet inside the locomotive from being affected by external environmental factors. The connection between the lap joint 36 and the lap groove 37 can also increase the overall stability of the shutter in the closed state. Adjacent blades 33 are connected and supported by the overlap joints 36 and the overlap grooves 37, thereby reducing the shaking and deformation of the blades 33 under the action of external wind or other external forces, and ensuring that the shutters can maintain a good closed state.

[0029] In order to drain the rainwater on the blade 33 in time, please refer to Figure 1 In a preferred embodiment, the vertical plate 31 is arched, and a water guide groove is provided on the vertical plate 31 , and the water guide groove is connected to the outlets at both ends of the overlapping groove 37 .

[0030] When in use, when encountering rainy weather, rainwater will fall on the blades 33 of the blinds. Due to the inclination angle of the blades 33 and the shape of the arched vertical plate 31, the rainwater will flow along the blades 33 to the tail of the blades 33. Part of the rainwater may flow into the overlap between adjacent blades 33 and enter the overlap groove 37. Since the overlap joint 36 at the head of the blade 33 is inserted into the overlap groove 37 at the tail of the adjacent blade 33, the rainwater flows in the overlap groove 37. The outlets at both ends of the overlap groove 37 are connected to the water guide groove on the vertical plate 31. When the rainwater accumulates to a certain extent in the overlap groove 37, it will flow into the water guide groove from the outlet of the overlap groove 37. The main function of the water guide groove is to guide the rainwater flowing into the overlap groove 37 to the ceiling 12. Since the vertical plate 31 is arched, the water guide groove is arranged along the shape of the arch, which can effectively guide the rainwater to flow to the ceiling 12, and prevent the rainwater from accumulating on the blinds or flowing into the vents 13 inside the locomotive.

[0031] To facilitate the installation and removal of the ceiling 12, please refer to Figure 3 In a preferred embodiment, the fixing assembly 2 includes a bolt seat 21 arranged at the bottom of the ceiling 12, and a pin shaft 22 is rotatably connected to the bolt seat 21. A cotter pin 23 is passed through the end of the pin shaft 22, and the cotter pin 23 abuts against the side wall of the bolt seat 21. A movable bolt 24 is provided on the pin shaft 22, and the movable bolt 24 is used to be passed through the carport. A nut 25 is threadedly connected to the movable bolt 24, and the nut 25 is used to abut against the carport.

[0032] When in use, the roof 12 is placed at a predetermined position on the top of the carport so that the vent 13 at the bottom of the roof 12 matches the docking position of the electric cabinet on the carport. The hinge bolt 24 on the pin 22 is passed through the corresponding mounting hole on the carport. The hinge bolt 24 is designed so that it can be adjusted in a certain range, which is convenient for connection with the carport. The cotter pin 23 is inserted into the end of the pin 22 so that it abuts against the side wall of the bolt seat 21. The function of the cotter pin 23 is to prevent the pin 22 from accidentally coming out of the bolt seat 21 and ensure the stability of the connection. The nut 25 is screwed on the hinge bolt 24 and gradually tightened. During the tightening process, the nut 25 will gradually approach the surface of the carport and finally abut against the carport. Through the cooperation of the pin 22, the hinge bolt 24, the nut 25 and the cotter pin 23, a firm connection and stable fixation between the roof 12 and the carport are achieved. During the installation and disassembly process, the operation is relatively simple, and at the same time, a reliable fixing effect can be provided to ensure the normal use and safety of the locomotive roof 12.

[0033] In order to further improve the convenience of installing and removing the ceiling 12, please refer to Figure 3In a preferred embodiment, a torsion spring 26 is sleeved on the pin shaft 22, one end of the torsion spring 26 is connected to the bolt seat 21, and the other end of the torsion spring 26 is overlapped on the movable bolt 24, and the torsion spring 26 makes the movable bolt 24 tend to rotate toward the center of the ceiling 12.

[0034] When in use, the torsion spring 26 is installed on the pin shaft 22. Under the action of the torsion spring 26, the movable bolt 24 is always twisted toward the center position of the ceiling 12. In this way, when the ceiling 12 is installed and disassembled, no additional personnel are required to hold the movable bolt 24, thereby reducing the safety risks such as collision damage caused by misoperation during installation and disassembly.

[0035] In order to improve the stability of the ceiling 12, please refer to Figure 3 In a preferred embodiment, a washer 27 is sleeved on the movable bolt 24, and the washer 27 is located between the nut 25 and the carport.

[0036] When in use, the nut 25 will exert a large pressure on the surface of the carport during the tightening process. The presence of the gasket 27 can disperse the pressure of the nut 25 to a larger area, reduce the pressure per unit area of ​​the carport surface, and prevent the carport surface from being damaged due to excessive local pressure. The contact between the gasket 27, the nut 25 and the carport can increase the friction force, preventing the nut 25 from loosening due to vibration or external force during the operation of the locomotive. The rough surface or special material of the gasket 27 can provide a larger friction coefficient, making the nut 25 more firmly fixed. The gasket 27 can protect the surface of the carport. It can prevent the nut 25 from directly contacting the carport and reduce friction and wear between metals. At the same time, the gasket 27 can also prevent the nut 25 from scratching the coating or decoration on the surface of the carport during the tightening process.

[0037] To ensure the vent 13 is unobstructed and the cabinet is clean, please refer to Figure 2 In a preferred embodiment, a filter screen 14 is provided on the ceiling 12 , and the filter screen 14 is located between the blades 33 and the vent 13 .

[0038] During use, when the electric cabinet inside the locomotive needs ventilation and heat dissipation, the outside air will enter the vent 13 through the gaps between the blades 33 of the shutter. The air will pass through the filter 14 during the flow. The main function of the filter 14 is to filter the air entering the vent 13. The filtering effect of the filter 14 can keep the vent 13 and the inside of the electric cabinet clean. Avoid dust and debris from accumulating inside the electric cabinet, which will affect the heat dissipation effect of the electric cabinet and the normal operation of electrical equipment. At the same time, it also reduces the cleaning and maintenance work of the electric cabinet. In addition, the presence of the filter 14 can effectively prevent the vent 13 from being blocked, ensuring that the air can flow smoothly into the electric cabinet for heat dissipation.

[0039] To clean the filter 14, refer to Figure 2 In a preferred embodiment, an impeller 15 is rotatably connected to the ceiling 12 below the filter 14 , and a brush 16 is provided on the top of the impeller 15 , and the brush 16 abuts against the filter 14 .

[0040] When in use, when the electric cabinet inside the locomotive needs to be ventilated and heat dissipated, when the outside air enters the vent 13 through the louver blades 33, the flow of air will drive the impeller 15 located below the filter 14 to rotate. As the impeller 15 rotates, the brush 16 on the top of the impeller 15 will brush the filter 14. Since the brush 16 abuts against the filter 14, when the impeller 15 rotates, the brush 16 will continuously move on the surface of the filter 14 to clean the filter 14. Through the cleaning of the brush 16, the filter 14 can always maintain a good filtering effect and effectively prevent dust and debris from entering the electric cabinet inside the locomotive. This helps to keep the electric cabinet clean and improve the heat dissipation efficiency of the electric cabinet and the reliability of electrical equipment.

[0041] To collect dust on the filter 14, please refer to Figure 2 In a preferred embodiment, an ash guide groove 17 is provided on the impeller 15 below the brush 16, and the ash guide groove 17 extends along the length direction of the impeller 15. The ash guide groove 17 is inclined and gradually decreases from the middle of the impeller 15 toward the periphery of the impeller 15. An ash collecting box 18 is provided on the periphery of the impeller 15, and the outlet of the ash guide groove 17 is connected to the top of the ash collecting box 18.

[0042] When in use, the brush 16 brushes off the dust and debris on the filter 14 during the process of cleaning the filter 14. These dust and debris fall naturally under the action of gravity. Since the impeller 15 is provided with an ash guide groove 17 below the brush 16, and the ash guide groove 17 is inclined, it gradually descends from the middle of the impeller 15 to the side of the impeller 15. When dust and debris fall, they will fall into the ash guide groove 17. The inclined design of the ash guide groove 17 allows the dust to slide toward the side of the impeller 15 along the inclined direction. The ash guide groove 17 guides the dust and debris to the side of the impeller 15, and the ash collecting box 18 is provided on the side of the impeller 15. The outlet of the ash guide groove 17 is connected to the top of the ash collecting box 18, and the dust and debris finally fall into the ash collecting box 18 along the ash guide groove 17. The main function of the ash collecting box 18 is to collect the dust and debris cleaned from the filter 14. It provides a centralized storage space to prevent dust from flying again into the ventilation system or polluting the surrounding environment. When the dust in the dust box 18 accumulates to a certain extent, the dust box 18 can be removed from the side of the impeller 15 for cleaning and disposal. The detachable design of the dust box 18 makes it convenient and quick to clean the dust.

[0043] In order to better understand the present invention, the following Figure 1 - Figure 7The working principle of the ceiling 12 with movable shutters of the technical solution of the present invention is described in detail: the vent 13 at the bottom of the ceiling 12 is connected to the electric cabinet inside the locomotive, providing a ventilation and heat dissipation channel for the electric cabinet. The blade 33 can rotate freely around the connecting shaft within a certain angle range. When the shutter needs to be closed, under the action of the gravity of the blade 33 itself, the blade 33 rotates downward until the head of the blade 33 contacts the closing limit pin 41. The closing limit pin 41 prevents the blade 33 from continuing to rotate downward, so that the shutter is in a closed state, preventing external debris, rainwater, etc. from entering the vent 13. When the shutter needs to be opened, under the action of the airflow generated by the ventilator, the blade 33 rotates upward until the tail of the blade 33 contacts the opening limit pin 42. The opening limit pin 42 prevents the blade 33 from continuing to rotate upward, so that the shutter is in a maximum open state, ensuring that the ventilation volume of the vent 13 reaches the maximum.

[0044] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A ceiling with movable shutters, It is characterized in that include: A locomotive mechanism, the locomotive mechanism comprising a carport and a ceiling arranged on the top of the carport, the ceiling being fixed to the carport by a fixing assembly, and a ventilating opening docking with an electric cabinet being arranged at the bottom of the ceiling; The shutter mechanism comprises two vertical plates arranged on the top of the ceiling and above the vents, two overlapping plates are arranged on the other two sides of the ceiling, a plurality of blades are rotatably connected between the two vertical plates in sequence, and the tail of the blades is rotatably connected between the two vertical plates; and, The limiting mechanism comprises a closed limiting pin disposed on two vertical plates and located below the blade head for limiting the rotation of the blade, and an open limiting pin disposed on the two vertical plates and located below the blade tail for limiting the rotation of the blade.

2. A ceiling with movable shutters according to claim 1, It is characterized in that A rotating shaft is provided at the tail of the blade, a threaded shaft is provided between the two vertical plates, and the rotating shaft is rotatably connected to the threaded shaft.

3. A ceiling with movable shutters according to claim 1, It is characterized in that The blade head is provided with a lap joint, and the blade tail is provided with a lap groove for accommodating the lap joint.

4. A ceiling with movable shutters according to claim 1, It is characterized in that The vertical plate is in an arched shape and is provided with a water guide groove, which is connected to outlets at both ends of the overlapping groove.

5. A ceiling with movable shutters according to claim 1, It is characterized in that The fixing assembly includes a bolt seat arranged at the bottom of the ceiling, a pin shaft is rotatably connected to the bolt seat, a cotter pin is passed through the end of the pin shaft, the cotter pin abuts against the side wall of the bolt seat, a movable bolt is provided on the pin shaft, the movable bolt is used to be passed through the carport, a nut is threadedly connected to the movable bolt, and the nut is used to abut against the carport.

6. A ceiling with movable shutters according to claim 5, It is characterized in that A torsion spring is sleeved on the pin shaft, one end of the torsion spring is connected to the bolt seat, and the other end of the torsion spring is overlapped on the movable bolt. The torsion spring makes the movable bolt have a tendency to rotate toward the center of the ceiling.

7. A ceiling with movable shutters according to claim 5, It is characterized in that A washer is sleeved on the movable bolt and is located between the nut and the carport.

8. A ceiling with movable shutters according to claim 1, It is characterized in that A filter screen is arranged on the ceiling and is located between the blades and the vent.

9. A ceiling with movable shutters according to claim 8, It is characterized in that An impeller is rotatably connected to the ceiling below the filter screen, and a brush is provided on the top of the impeller, and the brush abuts against the filter screen.

10. A ceiling with movable shutters according to claim 9, It is characterized in that An ash guide groove is provided on the impeller below the brush. The ash guide groove extends along the length direction of the impeller. The ash guide groove is inclined and gradually decreases from the middle of the impeller toward the periphery of the impeller. An ash collecting box is provided on the periphery of the impeller, and the outlet of the ash guide groove is connected to the top of the ash collecting box.

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