A ventilation device with adjustable air inlets

Abstract

The present invention relates to the technical field of air conditioning, and provides a ventilation device with adjustable air outlets, including a ventilation duct with an exhaust duct connected to its end, and at least two bellows pipes arranged at the bottom of the ventilation duct. The bottom end of the bellows pipe is connected with a dust suction frame; it also includes being installed on the side wall of the dust suction frame, etc.; and a filter plate slidably arranged in the dust suction frame and having a flat key shaft at its end. When the filter plate is inserted into the dust suction frame, the flat key shaft thereon is docked with the key sleeve on the gear box. In the present invention, the filter plate is docked with the key sleeve on the gear box through the flat key shaft. When the servo motor I drives the rotating cover to rotate from the vertical state to the horizontal state, the filter plate will be flipped 180° under the action of the gear box and the key sleeve, making the side with impurities face upwards, avoiding the impurities from falling down when pulled out subsequently. And when the rotating cover rotates to the vertical state, it can support the filter plate and provide guidance for its insertion, making the flat key shaft on the filter plate easier to be docked with the key sleeve on the gear box.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and particularly to a ventilation device with adjustable air outlets. Background Art

[0002] Ventilation devices are widely used in industrial production, commercial buildings, and residential environments, aiming to improve indoor air quality, remove harmful gases and particulate matters. Its basic principle is to discharge the polluted air indoors through the air flow generated by a fan and introduce fresh air, thereby maintaining a healthy indoor environment.

[0003] In an industrial production workshop, especially when performing operations such as soldering that generate a large amount of harmful smoke and particulate matter, it is necessary to timely discharge the pollutants. Otherwise, it will not only pose a threat to the health of workshop personnel but also may deposit on the surface of equipment, affecting the normal operation of the equipment. Currently, such workshops mainly use a local exhaust system for ventilation, and capture the smoke generated during the welding process by installing air collection hoods (such as umbrella-shaped hoods, side suction hoods, etc.) above or near the welding points. All the air collection hoods are connected via pipes, and finally, the collected soot and harmful gases are uniformly discharged to the outside of the workshop. However, the air outlets of such systems are usually fixed, which requires workshop personnel to move the workpieces to the air outlet for operation, thus bringing great limitations. In addition, after being used for a period of time, a large amount of solid impurities will accumulate in the air collection hoods and pipes, and it is necessary to disassemble them as a whole for cleaning and reinstall them after cleaning. This process is rather cumbersome. Moreover, when disassembling the air collection hoods and pipes, the soot and particulate matter attached to them may scatter, causing secondary pollution and increasing the difficulty of cleaning. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a ventilation device that is easy to clean and has adjustable air outlets.

[0005] Technical Solution: A ventilation device with adjustable air outlets includes a ventilation duct with an exhaust pipe connected to one end, and at least two corrugated pipes arranged at the bottom of the ventilation duct. The bottom end of the corrugated pipe is connected to a dust suction frame. It also includes a gear box installed on the side wall of the dust suction frame and rotatably provided with a key sleeve in the upper inner part, and a filter plate slidably arranged in the dust suction frame and having a flat key shaft at one end. When the filter plate is inserted into the dust suction frame, the flat key shaft on it is docked with the key sleeve on the gear box, and a pull rod is arranged at the other end of the filter plate. It further includes a servo motor I installed on the side wall of the dust suction frame, and a rotating shaft rotatably arranged at the lower part of the dust suction frame, with one end connected to the output shaft of the servo motor I and the other end cooperating with the lower part of the gear box. An installation plate is fixedly arranged on the rotating shaft, and a rotating cover that can cover the opening of the dust suction frame is detachably arranged on the installation plate.

[0006] In addition, it is particularly preferred that the rotation directions between the upper and lower parts of the gearbox are opposite, and the rotational speed of the upper part of the gearbox is twice that of the lower part; when the rotating cover rotates to the vertical state, it can contact and support the filter plate.

[0007] In addition, it is particularly preferred that a diversion frame is provided at the bottom of the dust suction frame, the top opening of the diversion frame is smaller than the bottom opening, and it gradually expands from the top to the bottom.

[0008] In addition, it is particularly preferred that it further includes a mounting bracket with a runner fixedly provided on the lower surface of the ventilation duct, and a servo motor II mounted on the lower surface of the ventilation duct, the output shaft of which is fixedly connected to the runner on the mounting bracket. An electric push rod is fixedly installed at the bottom of the runner, and the movable end of the electric push rod is connected to the dust suction frame.

[0009] In addition, it is particularly preferred that it further includes a docking pipe sleeve fixedly provided on the exhaust pipe. A limit sleeve is provided on the side wall of the docking pipe sleeve. A steering pipe with a rod sleeve is rotatably provided on the docking pipe sleeve. A limit rod is slidably connected in the rod sleeve of the steering pipe, and the limit rod is inserted into the limit sleeve on the side wall of the docking pipe sleeve.

[0010] In addition, it is particularly preferred that it further includes a filter frame slidably arranged in the exhaust pipe and capable of being pulled outwards.

[0011] In addition, it is particularly preferred that it further includes two groups of guide shafts fixedly provided on the side wall of the exhaust pipe. A clamping plate is slidably arranged on each group of guide shafts, and a spring is provided between the clamping plate and the corresponding guide shaft. The two clamping plates cooperate to limit the filter frame.

[0012] In addition, it is particularly preferred that it further includes a rotating rod arranged in the exhaust pipe and a baffle fixedly provided on the rotating rod. A reset structure is provided between the rotating rod and the exhaust pipe, and the baffle contacts the filter frame.

[0013] Beneficial effects: The filter plate of the present invention is docked with the key sleeve on the gearbox through a flat key shaft. When the servo motor I drives the rotating cover to rotate from the vertical state to the horizontal state, the filter plate will be flipped 180° under the action of the gearbox and the key sleeve, making the side with impurities face upward, avoiding the impurities from falling downward during the subsequent pulling out. In addition, when the rotating cover rotates to the vertical state, it can support the filter plate and provide guidance for its insertion, making the flat key shaft on the filter plate easier to dock with the key sleeve on the gearbox; through the cooperation of the servo motor II, the mounting frame and the electric push rod, the distance between the dust suction frame and the dust source and the orientation of the dust suction frame can be adjusted, so as to better extract the dust, thereby improving the ventilation efficiency; the design of the docking pipe sleeve allows the exhaust duct to be flexibly docked with the exhaust equipment or the pipeline system, and the direction can be adjusted, facilitating on-site installation and subsequent adjustment; the design of the filter frame can intercept and purify the particulate matter in the dust without affecting the ventilation efficiency, avoiding the direct discharge of the dust to the outside and polluting the environment. Brief Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the internal structure of the dust suction frame of the present invention.

[0016] Figure 3 It is Figure 2 A schematic diagram after changing the viewing angle.

[0017] Figure 4 It is a schematic diagram of the structure of the gearbox of the present invention.

[0018] Figure 5 It is a schematic diagram of the structure of the baffle, the rotating shaft and the mounting plate of the present invention.

[0019] Figure 6 It is a schematic diagram of the structure of the steering part of the present invention.

[0020] Figure 7 It is a schematic diagram of the internal structure of the exhaust duct of the present invention.

[0021] Figure 8 It is a schematic diagram of the structure of the limiting part of the present invention.

[0022] Figure 9 It is a schematic diagram of the connection relationship between the servo motor II, the mounting frame and the electric push rod of the present invention.

[0023] In the figure: 1 - ventilation duct, 11 - exhaust duct, 2 - corrugated pipe, 21 - dust suction frame, 221 - diversion frame, 3 - gearbox, 31 - key sleeve, 32 - filter plate, 321 - flat key shaft, 322 - pull rod, 4 - rotating cover, 41 - servo motor I, 42 - rotating shaft, 43 - mounting plate, 5 - servo motor II, 51 - mounting bracket, 511 - runner, 52 - electric push rod, 6 - docking pipe sleeve, 61 - limiting sleeve, 62 - steering pipe, 621 - rod sleeve, 63 - limiting rod, 7 - filter frame, 8 - clamping plate, 81 - guiding shaft, 9 - rotating rod, 91 - baffle plate. Detailed implementation manners

[0024] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to be able to fully convey the scope of the present invention to those skilled in the art.

[0025] The term "including" and its variants used herein mean open inclusion, that is, "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "an exemplary embodiment" and "an embodiment" mean "at least one exemplary embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects.

[0026] Please refer to Figure 1 , an embodiment of the present invention provides a ventilation device with adjustable air outlets, including a ventilation duct 1 with an exhaust duct 11 connected to the end and a corrugated pipe 2 arranged at the bottom of the ventilation duct 1. The number of corrugated pipes 2 can be two or more. In this embodiment, two are taken as an example for description.

[0027] Please refer to Figures 2 - 4 , in the embodiment of the present invention, the bottom end of the corrugated pipe 2 is connected to a dust suction frame 21, and the corrugated pipe 2 and the dust suction frame 21 are interconnected. Refer to Figure 2 , a diversion frame 221 is arranged at the bottom of the dust suction frame 21. The diversion frame 221 is designed as a hollow trapezoidal shape, the top opening of which is smaller than the bottom opening, and the whole expands outward from top to bottom. The large opening at the bottom can form a larger collection surface, effectively attracting and collecting pollutants from different directions, and the trapezoidal design can reduce the resistance loss when the air flow enters the pipe, thereby improving the overall extraction efficiency of the device, so as to better extract the soot, and refer to Figure 3, a gearbox 3 is installed on the right side wall of the dust suction frame 21. A key sleeve 31 is rotatably arranged in the upper part of the gearbox 3. Under the meshing action of the internal gear structure of the gearbox 3, the rotation directions between its upper part and lower part are opposite, and the rotation speed of the upper part of the gearbox 3 is twice that of the lower part. Refer to Figure 2 , a filter plate 32 is slidably arranged in the upper part of the dust suction frame 21. The front and rear side walls of the filter plate 32 are both chamfered and fit the inner wall of the dust suction frame 21, and can filter the solid impurities in the smoke and dust drawn into the dust suction frame 21 and isolate them on its lower surface. Refer to Figure 4 , a flat key shaft 321 is arranged at the right end of the filter plate 32. When the filter plate 32 is inserted into the dust suction frame 21, the flat key shaft 321 will be inserted into the key sleeve 31. At this time, if the key sleeve 31 rotates, the flat key shaft 321 and the filter plate 32 will rotate accordingly. Refer to Figure 2 , a pull rod 322 is arranged at the left end of the filter plate 32. The filter plate 32 can be conveniently pulled by using the pull rod 322, and the pull rod 322 will not prevent the filter plate 32 from rotating in the dust suction frame 21.

[0028] Please refer to Figure 2 、 Figure 3 and Figure 5 , in the embodiment of the present invention, a servo motor I 41 is installed at the lower part of the left side wall of the dust suction frame 21. A rotating shaft 42 is rotatably arranged in the dust suction frame 21. The left end of the rotating shaft 42 is fixedly connected to the output shaft of the servo motor I 41. The right end of the rotating shaft 42 is inserted into the lower part of the gearbox 3 and cooperates with the internal gear structure of the gearbox 3; starting the servo motor I 41 can drive the rotating shaft 42 to rotate and drive the internal gear structure of the gearbox 3 to operate through the rotating shaft 42. Refer to Figure 5 , a mounting plate 43 is fixedly arranged on the rotating shaft 42. A rotating cover 4 is fixedly arranged on the mounting plate 43 through bolts. When the rotating cover 4 is in a horizontal state, it can close the bottom opening of the dust suction frame 21. And because the rotating cover 4 and the mounting plate 43 are connected by bolts, the bolts can be unscrewed to remove the rotating cover 4 and clean it.

[0029] Please refer to Figure 2 and Figure 3 , in the embodiment of the present invention, when the rotating cover 4 rotates to a vertical state, it can contact the filter plate 32 and support it. At this time, the filter plate 32 can be replaced. When the old filter plate 32 is pulled out and the new filter plate 32 is inserted, the rotating cover 4 can provide guidance for the filter plate 32, so that the old filter plate 32 is smoothly pulled out and the flat key shaft 321 of the new filter plate 32 is more easily docked with the key sleeve 31 on the gearbox 3.

[0030] Please refer to Figure 1 、 Figure 2 and Figure 9, in the embodiment of the present invention, mounting brackets 51 are fixedly arranged on both sides of the bellows 2 on the lower surface of the ventilation duct 1. A runner 511 is rotatably arranged at the bottom of the mounting bracket 51. A servo motor II 5 matching the mounting bracket 51 is also installed on the lower surface of the ventilation duct 1. The output shaft of the servo motor II 5 is fixedly connected to the runner 511 on the mounting bracket 51, and an electric push rod 52 is fixedly installed at the bottom of the runner 511. The movable end of the electric push rod 52 is connected to the dust suction frame 21. When the movable end of the electric push rod 52 extends or contracts, the bellows 2 will be stretched or folded accordingly, and the dust suction frame 21 will then descend or ascend. And in cooperation with the servo motor II 5 and the runner 511 on the mounting bracket 51, the dust suction frame 21 can swing back and forth to change the orientation of the bottom opening of the dust suction frame 21, and according to the specific requirements in the workshop, the air outlet can be adjusted to the optimal position to obtain the best ventilation effect.

[0031] In the embodiment of the present invention, the workshop workers can cooperate with the servo motor II 5 and the runner 511 to change the amplitude of the forward or backward swing of the electric push rod 52 and the dust suction frame 21, so as to change the orientation of the bottom opening of the dust suction frame 21. Then, the electric push rod 52 is started to adjust the distance between the bottom opening of the dust suction frame 21 and the smoke source, so as to better extract the smoke and improve the ventilation efficiency. After the device has been used for a period of time, the servo motor I 41 is started to make its output shaft rotate clockwise by 90°. The rotating shaft 42 also rotates accordingly, and the rotary cover 4 changes from the vertical state to the horizontal state. And under the drive of the rotating shaft 42, the internal gear structure of the gear box 3 starts to operate, and the key sleeve 31 rotates counterclockwise by 180°. The flat key shaft 321 and the filter plate 32 also rotate counterclockwise by 180° accordingly, so that the side of the filter plate 32 blocked by impurities faces upward. Subsequently, the pull rod 322 is pulled to take out the filter plate 32 from the dust suction frame 21. And because the side of the filter plate 32 with impurities faces upward, when the filter plate 32 is taken out, the impurities can be greatly reduced from falling downward. Even if a small amount of impurities fall, they will be caught by the rotary cover 4. Subsequently, when the rotary cover 4 is opened, a trash can can be used in advance to catch at the bottom opening of the dust suction frame 21 to avoid the impurities falling onto the workbench or the workpiece and causing secondary pollution. And because the rotary cover 4 and the filter plate 32 rotate in opposite directions, even if the filter plate 32 is flipped by 180°, there will be no collision between them. After that, the servo motor I 41 still needs to be started to make the rotary cover 4 continue to rotate clockwise by 90°, changing from the horizontal state to the vertical state, and then a new filter plate 32 is inserted into the dust suction frame 21. Under the support and guiding action of the rotary cover 4, the flat key shaft 321 can be more easily docked with the key sleeve 31 on the gear box 3.

[0032] Please refer to Figure 1 and Figure 6, in the embodiment of the present invention, a docking sleeve 6 is fixedly arranged at the pipe orifice of the exhaust duct 11. Four limiting sleeves 61 are symmetrically arranged on the side wall of the docking sleeve 6. A steering pipe 62 with a rod sleeve 621 is rotatably arranged on the docking sleeve 6. The steering pipe 62 is used to be connected with an external exhaust device. A limiting rod 63 is slidably connected in the rod sleeve 621 of the steering pipe 62, and a spring is connected between the limiting rod 63 and the rod sleeve 621. The limiting rod 63 is in an N shape, and the other end thereof is inserted into the limiting sleeve 61 on the side wall of the docking sleeve 6. When the limiting rod 63 is inserted into the limiting sleeve 61, the pipe orifice orientation of the steering pipe 62 will also be fixed accordingly. Pull out the limiting rod 63 from the initial limiting sleeve 61 and rotate the steering pipe 62, and then insert the limiting rod 63 into another limiting sleeve 61, which can realize the change of the pipe orifice orientation of the steering pipe 62 to adapt to different exhaust devices.

[0033] Please refer to Figures 6 - 8 , in the embodiment of the present invention, a filter frame 7 is slidably arranged in the exhaust duct 11. An activated carbon plate or other substances capable of purifying gas can be placed in the filter frame 7 to purify the gas extracted from the workshop. Refer to Figure 7 From the perspective of , the filter frame 7 can be pulled out from the rear side wall of the exhaust duct 11, and two groups of guide shafts 81 are fixedly arranged on this side wall. Clamping plates 8 are slidably arranged on both groups of guide shafts 81. Springs are arranged between the clamping plates 8 and the corresponding guide shafts 81. Initially, under the elastic force of the springs, the two clamping plates 8 limit and block the filter frame 7, making it unable to be pulled out from the exhaust duct 11. When the filter frame 7 needs to be cleaned subsequently, slide the two clamping plates 8 apart, and the filter frame 7 can be pulled out. A rotating rod 9 is also rotatably arranged in the exhaust duct 11. A torsion spring is arranged between the rotating rod 9 and the exhaust duct 11, and a baffle 91 is fixedly connected to the rotating rod 9. Refer to Figure 7 , when the filter frame 7 is loaded into the exhaust duct 11, the baffle 91 will be pushed open by the filter frame 7. After the filter frame 7 is pulled out subsequently, under the action of the torsion spring, the baffle 91 resets and blocks the opening on the exhaust duct 11 through which the filter frame 7 can pass.

[0034] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary technical personnel in the technical field to understand the disclosed embodiments.

[0035] The above are only optional embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A ventilation device with adjustable air outlets, comprising a ventilation duct (1) whose end is connected to an exhaust pipe (11) and at least two bellows (2) arranged at the bottom of the ventilation duct (1), wherein the bottom end of the bellows (2) is connected to a dust collection frame (21); Its characteristics are: It also comprises a gear box (3) mounted on the side wall of the dust collecting frame (21) and having a key sleeve (31) rotatably arranged on the upper inner portion, and a filter plate (32) slidably arranged in the dust collecting frame (21) and having a flat key shaft (321) at the end thereof, wherein when the filter plate (32) is inserted into the dust collecting frame (21), the flat key shaft (321) thereon docks with the key sleeve (31) on the gear box (3), and a pull rod (322) is arranged at the other end of the filter plate (32); It also includes a servo motor I (41) mounted on the side wall of the dust collection frame (21), and a rotating shaft (42) rotatably arranged at the lower part of the dust collection frame (21), one end of which is connected to the output shaft of the servo motor I (41) and the other end of which is matched with the lower part of the gear box (3), the rotating shaft (42) being fixedly provided with a mounting plate (43), and the mounting plate (43) being detachably provided with a rotating cover (4) capable of covering the opening of the dust collection frame (21); The upper part and the lower part of the gear box (3) rotate in opposite directions, and the rotation speed of the upper part of the gear box (3) is twice that of the lower part; when the rotating cover (4) rotates to a vertical state, it can contact the filter plate (32) and support it; A guide frame (221) is provided at the bottom of the dust collection frame (21); the top opening of the guide frame (221) is smaller than the bottom opening, and gradually expands from the top to the bottom; It also comprises a mounting frame (51) fixedly mounted on the lower surface of the ventilation duct (1) and having a rotating wheel (511), and a servo motor II (5) mounted on the lower surface of the ventilation duct (1) and having an output shaft fixedly connected to the rotating wheel (511) on the mounting frame (51), an electric push rod (52) fixedly mounted on the bottom of the rotating wheel (511), and a movable end of the electric push rod (52) connected to the dust collection frame (21); It also comprises a butt joint pipe sleeve (6) fixedly arranged on the exhaust pipe (11), a limiting sleeve (61) being arranged on the side wall of the butt joint pipe sleeve (6), a steering pipe (62) with a rod sleeve (621) being rotatably arranged on the butt joint pipe sleeve (6), a limiting rod (63) being slidably connected in the rod sleeve (621) of the steering pipe (62), and the limiting rod (63) being inserted into the limiting sleeve (61) on the side wall of the butt joint pipe sleeve (6).

2. A ventilation device with adjustable air outlet according to claim 1, characterized in that: It also includes a filter frame (7) which is slidably disposed in the exhaust pipe (11) and can be pulled outward.

3. A ventilation device with adjustable air outlet according to claim 2, characterized in that: It also includes two groups of guide shafts (81) fixedly arranged on the side wall of the exhaust pipe (11), each group of the guide shafts (81) is slidably provided with a retaining plate (8), and a spring is provided between the retaining plate (8) and the corresponding guide shaft (81), and the two retaining plates (8) cooperate to limit the filter frame (7).

4. A ventilation device with adjustable air outlet according to claim 3, characterized in that: It also comprises a rotating rod (9) arranged in the exhaust pipe (11) and a baffle (91) fixedly arranged on the rotating rod (9), a reset structure is provided between the rotating rod (9) and the exhaust pipe (11), and the baffle (91) is in contact with the filter frame (7).

Images