air filter

Abstract

The embodiment of the present invention relates to an air filter, which involves the field of air purification technology, and its main purpose is to provide an air filter that is easy to operate. The main technical solution adopted is: the air filter includes: a cyclone filter chamber, including an air inlet chamber, a dust collecting chamber, an exhaust chamber and a cyclone filter; a sewage exhaust fan, the air inlet of the sewage exhaust fan is connected to the dust collecting chamber; the first end of the sewage exhaust pipe is connected to the sewage outlet of the sewage exhaust fan; the first end of the sewage exhaust movable port is connected to the second end of the sewage exhaust pipe; the cap seals the sewage exhaust movable port in the air inlet of the air inlet chamber; a linkage drive device is used to drive the cap to open the air inlet of the air inlet chamber and drive the sewage exhaust movable port to extend from the air inlet of the air inlet chamber to the outside of the air inlet of the air inlet chamber. Through one drive, the double action of opening the air inlet of the cyclone filter and releasing the sewage exhaust movable port can be realized.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of air purification, and in particular to an air filter. Background Art

[0002] Before the absorption purifier is used to purify poisonous gases, a particulate purifier is usually required.

[0003] A commonly used particulate matter purifier is a cyclone dust collector. It has a cyclone chamber with an air inlet, an air outlet, and a dust outlet. External air enters the cyclone chamber through the air inlet, generating a cyclone that separates particulate matter and discharges it through the dust outlet. The clean, filtered air is then discharged through the exhaust outlet.

[0004] Cyclone dust collectors are typically installed within the locomotive's chassis, while the air inlet and dust outlet must be connected to the outside of the chassis. Therefore, two through-holes are required to connect the air inlet and dust outlet, respectively. In situations such as war, natural disasters, and industrial accidents, where the outside world is exposed to dangerous gas environments, the air inlet and dust outlets must be capped when not in use. These caps must be manually removed before use. This increases the time required to activate the cyclone dust collector in emergency situations, increasing the risk to personnel exposed to hazardous gas environments. Summary of the Invention

[0005] In view of this, an embodiment of the present invention provides an air filter, the main purpose of which is to provide an air filter that is easy to operate.

[0006] To achieve the above objectives, the embodiments of the present invention mainly provide the following technical solutions:

[0007] An embodiment of the present invention provides an air filter, comprising:

[0008] A cyclone filter chamber, comprising an air inlet chamber, a dust collection chamber, an exhaust chamber, and a cyclone filter, wherein the air inlet chamber is provided with an air inlet, the air inlet of the cyclone filter is provided in the air inlet chamber, the dust exhaust port of the cyclone filter is provided in the dust collection chamber, and the exhaust port of the cyclone filter is provided in the exhaust chamber;

[0009] a sewage exhaust fan, wherein the air inlet of the sewage exhaust fan is connected to the dust collecting chamber;

[0010] A sewage discharge pipe, wherein a first end of the sewage discharge pipe is connected to a sewage discharge port of the sewage discharge fan;

[0011] A movable sewage discharge port, wherein a first end of the movable sewage discharge port is connected to the second end of the sewage discharge pipe;

[0012] A cover cap is used to seal and buckle the movable sewage discharge port into the air inlet of the air inlet chamber;

[0013] The linkage driving device is used to drive the cover cap to open the air inlet of the air inlet chamber and drive the sewage discharge movable port to extend from the air inlet of the air inlet chamber to the outside of the air inlet of the air inlet chamber.

[0014] The objectives of the embodiments of the present invention and the solutions to the technical problems thereof can be further achieved by adopting the following technical measures.

[0015] Optionally, the aforementioned air filter, wherein the linkage drive device includes: a connecting component and a driving component, the connecting component connects the cap and the sewage discharge active port, and the driving end of the driving component is used to drive the cap or the sewage discharge active port to link the cap and the sewage discharge active port.

[0016] Optionally, in the aforementioned air filter, the first end of the cap is rotatably connected to the air inlet chamber;

[0017] The first end of the connecting member is rotatably connected to the cap, and the first end of the connecting member is rotatably connected to the sewage discharge port;

[0018] The second end of the movable sewage discharge port is rotatably disposed in the air inlet chamber;

[0019] The driving end of the driving component is used to drive the cover cap to rotate relative to the air inlet chamber, or the driving end of the driving component is used to drive the sewage discharge movable port to rotate relative to the connecting component.

[0020] Optionally, in the aforementioned air filter, the movable sewage discharge port is a bent pipe port;

[0021] When the movable sewage discharge port rotates relative to the connecting component and extends from the air inlet of the air inlet chamber to the outside of the air inlet of the air inlet chamber, the second end of the movable sewage discharge port faces the side of the air inlet of the air inlet chamber.

[0022] Optionally, in the aforementioned air filter, the air inlet of the air inlet chamber is provided with an air outlet bracket;

[0023] The air outlet bracket includes an annular tray and a connecting frame. The annular tray is fixed to the outer wall of the air inlet of the air inlet chamber. The connecting frame is fixed to the annular tray and extends into the air inlet chamber.

[0024] The first end of the cover cap is connected to the annular tray via a first rotating shaft;

[0025] The second end of the movable sewage discharge port is rotatably connected to the connecting frame via a second rotating shaft.

[0026] Optionally, in the aforementioned air filter, the linkage drive device comprises: a first paddle that rotates synchronously with the sewage discharge movable port;

[0027] The driving component includes: a driving motor, and a second paddle is provided at the power output end of the driving motor, and the second paddle is opposite to the first paddle, and is used for, under the drive of the driven motor, the second paddle drives the first paddle to rotate, so that the cap rotates to open the air inlet of the air inlet chamber and the second end of the sewage discharge active port is flipped from the air inlet of the air inlet chamber to extend out of the air inlet of the air inlet chamber.

[0028] Optionally, in the aforementioned air filter, the linkage drive device comprises: a torque spring;

[0029] The second rotating shaft rotates synchronously with the sewage discharge movable port;

[0030] The first end of the torsion spring is fixed to the second rotating shaft, and the second end of the torsion spring is fixed to the air outlet bracket.

[0031] Optionally, the aforementioned air filter, wherein

[0032] The linkage drive device includes: an electromagnetic brake, which is arranged between the second rotating shaft and the air outlet bracket, and is used to limit the rotation of the second rotating shaft in a power-off state, and release the restriction on the rotation of the second rotating shaft in a power-on state.

[0033] Optionally, the aforementioned air filter further comprises:

[0034] a first Hall sensing element for detecting a position where the sewage discharge movable port extends out of the air inlet of the air inlet chamber;

[0035] A second Hall sensing element is used to detect the position of the sewage discharge movable port extending out of the air inlet of the air inlet chamber.

[0036] Optionally, the aforementioned air filter further comprises:

[0037] A filter fan, wherein the air inlet side of the filter fan is communicated with the interior of the exhaust chamber, and the air outlet side of the filter fan is connected to the exhaust port of the exhaust chamber.

[0038] By means of the above technical solution, the air filter provided by the technical solution of the present invention has at least the following advantages:

[0039] In the technical solution provided by the embodiment of the present invention, compared with the prior art, there is no need to set up a separate dust exhaust port. During use, the linkage drive device can jointly drive the cap to open the air inlet of the air inlet chamber and drive the sewage discharge active port from the air inlet of the air inlet chamber to the outside of the air inlet of the air inlet chamber. Through one drive, the air inlet of the cyclone filter is opened and the sewage discharge active port is released (the sewage discharge active port is extended from the air inlet of the air inlet chamber to the outside of the air inlet of the air inlet chamber). The double action of reducing the operation time of the air filter opening process and reducing the risk to people in hazardous gas environments can be achieved.

[0040] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the embodiments of the present invention and to implement them according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0042] Figure 1 This is a schematic structural diagram of a ventilation and purification device provided by an embodiment of the present invention;

[0043] Figure 2 is a schematic cross-sectional view of a ventilation and purification device provided by an embodiment of the present invention;

[0044] Figure 3 This is a schematic diagram of an exploded structure of a ventilation and purification device provided by an embodiment of the present invention from a first perspective;

[0045] Figure 4 is a schematic diagram of an exploded structure of a ventilation and purification device provided by an embodiment of the present invention from a second perspective;

[0046] Figure 5 is a schematic cross-sectional view of a cyclone filter of a ventilation and purification device provided by an embodiment of the present invention;

[0047] Figure 6 This is a schematic diagram of the axonometric structure of the air inlet end of a purification component of a ventilation purification device provided by an embodiment of the present invention;

[0048] Figure 7 1 is a left-side structural schematic diagram of a purification component of a ventilation purification device provided by an embodiment of the present invention;

[0049] Figure 8This is a schematic diagram of the main structure of a purification component of a ventilation purification device provided by an embodiment of the present invention;

[0050] Figure 9 yes Figure 8 Schematic diagram of the cross-sectional structure of AA;

[0051] Figure 10 This is a schematic diagram of the axonometric structure of an air outlet end of a purification component of a ventilation and purification device provided by an embodiment of the present invention;

[0052] Figure 11 yes Figure 7 Schematic diagram of the cross-sectional structure of the middle BB;

[0053] Figure 12 This is a structural diagram of a linkage drive device, a cap, and a sewage discharge movable port in an air filter provided by an embodiment of the present invention;

[0054] Figure 13 It is a partial structural diagram of a linkage drive device, a cover cap, and a sewage discharge movable port in an air filter provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0055] To further illustrate the technical means and effectiveness of the present invention to achieve the intended objectives of the embodiments, the following detailed description of the specific implementation, structure, features, and effectiveness of the air filter according to the embodiments of the present invention is provided in conjunction with the accompanying drawings and preferred embodiments. In the following description, different references to "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0056] Figures 1 to 11 For an embodiment of the ventilation and purification device provided by the present invention, please refer to Figures 1 to 11 A ventilation and purification device provided in one embodiment of the present invention includes at least: a purification component 10 and a purification fan 20.

[0057] The purification component 10 includes a first air flow channel and a second air flow channel.

[0058] The first airflow channel is provided with a polluted gas purification unit, which can be used to purify harmful gases in the air. This unit serves as a purification channel 11, and is provided with a purification valve 31. The specific material and structure can be determined according to the type of polluted gas to be filtered. It can be set to filter a single type of harmful gas, or it can be set to filter at least two types of harmful and hazardous gases as required. The second airflow channel can serve as a channel for direct airflow, serving as a ventilation channel 12, and is provided with a ventilation valve 32.

[0059] The air outlet side of the purification fan 20 leads to the inlet of the ventilation channel 12 and the inlet of the purification channel 11 .

[0060] Two air flow channels are provided in the purification component 10. When the air needs to be ventilated separately, the ventilation valve 32 can be opened, the purification valve 31 can be closed, and the purification fan 20 can be turned on. The air volume can be discharged from the outlet of the ventilation channel 12 to realize the ventilation mode. When the air needs to be purified separately, the ventilation valve 32 can be closed, the purification valve 31 can be opened, and the purification fan 20 can be turned on. The air volume can be purified by the polluted gas purification unit of the purification channel and discharged to realize the purification mode. Compared with the prior art, the ventilation and purification device provided in this embodiment can realize the dual functions of ventilation and polluted gas purification. It can be assembled in a safety isolation tent. Only one set of equipment needs to be assembled, which is easy to assemble.

[0061] The first and second airflow channels are independent channels and can be arranged adjacent to each other, that is, separated by a barrier. The first airflow channel is used to filter polluted gases, and the second airflow channel is used when polluted gases are not required. The first and second airflow channels can be arranged in a stacked or annular manner. For example, the second airflow channel is an annular airflow channel surrounding the outer periphery of the first airflow channel.

[0062] The first end plate 110 at the outlet end of the first air flow channel has a first air outlet 111, and the air inlet end of the first air flow channel has a first air inlet 112, which serves as the entrance to the purification channel 11; the second end plate 120 at the outlet end of the second air flow channel has a second air outlet 121, and the air inlet end of the second air flow channel has a second air inlet 122, which serves as the entrance to the ventilation channel 12; the second air flow channel surrounds the outer periphery of the first air flow channel, and the second air flow channel can be an integral annular air flow channel, or can include multiple independent air flow channels. In implementation, the second air inlet 122 of each independent air flow channel is connected, serving as the entrance to the ventilation channel 12. There is an air flow gap space between the first end plate 110 and the second end plate 120, and the air flow gap space is respectively connected to each independent second air flow channel 12, the first air outlet 111, and the second air outlet 121. Among them, the second air outlet 121 can serve as the total air outlet of the purification component 10, and different ventilation channels can be selected by adjusting the opening and closing of the ventilation valve 32 and the purification valve 31.

[0063] In practice, the outlet of the ventilation channel 12 and the outlet of the purification channel 11 can be connected to a unified outlet, and the unified outlet can be connected to the safety isolation tent, so as to provide clean and safe air for the people in the safety isolation tent.

[0064] The purification fan 20 includes a motor 21 and a blade area 22. The blade area 22 is arranged on the drive shaft of the motor 21 and generates airflow according to the driving rotation of the drive shaft. The air outlet formed by the blade area 22 is sealed and connected to the inlet of the ventilation channel 12 and the inlet of the purification channel 11.

[0065] The ventilation and purification device proposed in one embodiment of the present invention, based on the ventilation and purification device provided in the above embodiment, may further include: a filter component 40. The filter component 40 has a filter air inlet and a filter air outlet, and the air inlet side of the purification fan 20 can be connected to the filter air outlet of the filter component 30. Therefore, when it is necessary to filter the air separately, the ventilation valve 32 can be opened, the purification valve 31 can be closed, and the purification fan 20 can be turned on. The air volume can be filtered by the filter component 30 for particulate matter, and then discharged from the outlet of the ventilation channel 12 to realize the filtering mode. When it is necessary to purify the air, the ventilation valve 32 can be closed, the purification valve 31 can be opened, and the purification fan 30 can be turned on. The air volume can be filtered by the filter component 30 for particulate matter, and then purified by the polluted gas purification unit of the purification channel 11 and discharged to realize the purification mode.

[0066] The filter component 40 may include a cyclone filter chamber 41, an exhaust fan 42, and a exhaust pipe 43. The cyclone filter chamber 41 includes an air inlet chamber 411, a dust collecting chamber 412, an exhaust chamber 413 and a cyclone filter 414. The air inlet chamber 411 is provided with an air inlet, the air inlet of the cyclone filter 414 is arranged in the air inlet chamber 411, the dust exhaust port of the cyclone filter 414 is arranged in the dust collecting chamber 412, and the air exhaust port of the cyclone filter 414 is arranged in the exhaust chamber 413; the air inlet of the exhaust fan 42 is connected to the dust collecting chamber 412, the first end of the exhaust pipe 43 is connected to the exhaust port of the exhaust fan 42, and the second end of the exhaust pipe 43 can be led to the outside of the air inlet set in the air inlet chamber 411; the air inlet side of the purification fan 20 is connected to the exhaust chamber 413.

[0067] The air inlet of the air inlet chamber 413 can be provided with a sealing cover to prevent external gas from entering the air inlet chamber 413 when ventilation and purification are not needed. The sealing cover can be opened and covered on the outside of the air inlet chamber 413.

[0068] In some embodiments, the second end of the drainage pipe 43 can be used to discharge dust through an independent drainage port defined in the filter element 40. In some embodiments, dust can also be discharged through the air inlet provided in the air inlet chamber 411. When the sealing cover is opened, the second end of the drainage pipe 43 can be directed to the air inlet provided in the air inlet chamber 411. The directions of the air inlet of the air inlet chamber 411 and the drainage port at the second end of the drainage pipe 43 can be different.

[0069] When ventilation and purification are not needed, the second end of the sewage pipe 43 can be set in the air inlet chamber 411, and the sealing cover simultaneously seals the air inlet of the air inlet chamber 411 and the second end of the sewage pipe 43 (the air inlet of the air inlet chamber and the second end of the sewage pipe are sealed in the sealed space formed between the sealing cover and the air inlet chamber).

[0070] The number of the cyclone filters 414 is not limited to one, and may be one or more. For example, a plurality of cyclone filters 414 are arranged in parallel.

[0071] The cyclone filter 414 includes an air duct 4141 and a conical barrel 4142. A cyclone impeller is disposed within the first end of the air duct 4141. The first port of the conical barrel 4142 extends into the second end of the air duct 4141. The first port of the conical barrel 4142 is smaller than the second port of the conical barrel 4142. The air inlet chamber 411, the dust collection chamber 412, and the exhaust chamber 413 are arranged sequentially. The air inlet of the first end of the air duct 4141 is disposed in the air inlet chamber 411, the second end of the air duct 4141 is disposed in the dust collection chamber 412, and the second port of the conical barrel 4142 is disposed in the exhaust chamber 413. The cyclone impeller can be fixed to the first end of the air duct 4141 or can be integrally formed within the first end of the air duct 4141. The specific form of the impeller is not limited.

[0072] During operation, the outside air enters the air inlet chamber 411 from the air inlet of the air inlet chamber 411, and after passing through the cyclone impeller inside the first end of the air duct 4141, a cyclone is generated in the air duct 4141, and the particulate matter with increased weight is swirled to the inner wall of the air duct 4141, and discharged to the dust collecting chamber 412 through the gap between the inner wall of the port at the second end of the air duct 4141 and the outer wall of the first port of the conical cylinder 4142. The lighter clean air flows from the center of the air duct 4141 through the first port of the conical cylinder 4142, and enters the exhaust chamber 413 through the second port of the conical cylinder 4142, thereby completing the screening of particulate matter in the air.

[0073] The air inlet formed by the fan blade area 22 is connected to the exhaust chamber 413. When the purification fan 20 is in operation, a negative pressure area is formed on the air inlet side of the purification fan 20, and a positive pressure area is formed on the air outlet side of the purification fan 20. In the purification mode, the ventilation valve 32 is closed and the purification valve 31 is open. Since the outlet of the ventilation channel 12 and the outlet of the purification channel 11 are connected, if the ventilation valve 32 is not sealed tightly, unpurified air will leak from the ventilation channel 32 and be transported to the safety isolation tent. This leads to excessively high sealing requirements for the ventilation valve 32, significantly increasing production costs. In some embodiments, the ventilation valve 32 may include a first valve disposed at the inlet of the ventilation channel 12 and a second valve disposed at the outlet of the ventilation channel, thereby improving the sealing effect by using two valves. In addition, in the purification mode, when the first valve and the second valve are closed, clean positive pressure gas can be introduced into the ventilation channel 12 between the first valve and the second valve, so that the pressure in the ventilation channel 12 between the first valve and the second valve is greater than the pressure in the purification channel, thereby preventing leakage of contaminated gas from the first valve into the ventilation channel 12. In addition, in the purification mode, the first valve and the second valve are closed, and a negative pressure pipeline can be applied to the ventilation channel 12 between the first valve and the second valve so that the pressure of the ventilation channel 12 between the first valve and the second valve is lower than the pressure of the purification channel, so that the polluted gas leaking from the first valve into the ventilation channel 12 can be discharged through the negative pressure pipeline.

[0074] Figures 12 to 13 This is an embodiment of the present invention, which can be based on the ventilation and purification device described in the above embodiment. Figures 12 to 13 An air filter according to one embodiment of the present invention comprises:

[0075] The cyclone filter chamber 41 includes an air inlet chamber 411, a dust collection chamber 412, an exhaust chamber 413, and a cyclone filter 414. The air inlet chamber 411 is provided with an air inlet. The air inlet of the cyclone filter 414 is provided in the air inlet chamber 411. The dust exhaust port of the cyclone filter 414 is provided in the dust collection chamber 412. The exhaust port of the cyclone filter 414 is provided in the exhaust chamber 413.

[0076] A sewage exhaust fan 42, wherein the air inlet of the sewage exhaust fan 42 is connected to the dust collecting chamber 412;

[0077] A sewage pipe 43, a first end of which is connected to a sewage outlet of the sewage exhaust fan 42;

[0078] A sewage discharge movable port 44, a first end of which is connected to the second end of the sewage discharge pipe 43;

[0079] A cover cap 45 seals and covers the movable sewage discharge port in the air inlet of the air inlet chamber 411;

[0080] The linkage drive device 46 is used to drive the cover cap 45 to open the air inlet of the air inlet chamber 411 and drive the sewage discharge movable port 44 to extend from the air inlet of the air inlet chamber 411 to the outside of the air inlet of the air inlet chamber 411.

[0081] In the technical solution provided by the embodiment of the present invention, compared with the prior art, there is no need to set up a separate dust exhaust port. During use, the linkage drive device 46 can jointly drive the cap 45 to open the air inlet of the air inlet chamber 411 and drive the sewage discharge active port 44 from the air inlet of the air inlet chamber 411 to the outside of the air inlet of the air inlet chamber 411. Through one drive, the air inlet of the cyclone filter 414 is opened and the sewage discharge active port 44 is released (the sewage discharge active port 44 is extended from the air inlet of the air inlet chamber 411 to the outside of the air inlet of the air inlet chamber 411). The double action can be realized, which reduces the operation time of the air filter opening process and reduces the risk of personnel in a hazardous gas environment.

[0082] In achieving the joint drive movement of the sewage discharge movable port 44 and the cap 45, the linkage drive device 46 can drive the sewage discharge movable port 44 and the cap 45 respectively. In some embodiments, the linkage drive device 46 includes: a connecting component 461 and a driving component 462. The connecting component 461 connects the cap 45 and the sewage discharge movable port 44, and the driving end of the driving component 462 is used to drive the cap 45 or the sewage discharge movable port 44, so that the cap 45 and the sewage discharge movable port 44 are linked.

[0083] If the movable sewage discharge port 44 and the cover 45 are directly driven to move in the opposite direction of the air inlet of the air inlet chamber 411, a longer travel distance in the air inlet direction inside the air inlet chamber 411 will be occupied, resulting in an excessive increase in the volume of the air inlet chamber 411. In order to maintain the miniaturization of the air inlet chamber 411, in some embodiments, the first end of the cover 45 is rotatably connected to the air inlet chamber 411; the first end of the connecting member 461 is rotatably connected to the cover 45, and the first end of the connecting member 461 is rotatably connected to the movable sewage discharge port 44; the second end of the movable sewage discharge port 44 is rotatably disposed in the air inlet chamber 411; and the driving end of the driving member is used to drive the movable sewage discharge port 44 to rotate relative to the connecting member 461. In this embodiment, in realizing the joint driving movement of the sewage discharge movable port 44 and the cover cap 45, the second end of the sewage discharge movable port 44 is rotatably arranged in the air inlet chamber 411. Compared with the structure of moving into the air inlet chamber 411 in the direction of air inlet into the air inlet chamber 411, the space occupied in the direction of air inlet into the air inlet chamber 411 can be effectively reduced.

[0084] In practice, in addition to using the driving end of the driving component to drive the sewage discharge movable port 44 to rotate relative to the connecting component 461, the driving end of the driving component can also be used to drive the cap 45 to rotate relative to the air inlet chamber 411.

[0085] In this embodiment, when the sewage discharge movable port 44 and the cap 45 are jointly driven to move, the cap 45 is driven to open the air inlet of the air inlet chamber 411 and the sewage discharge movable port 44 is driven to extend from the air inlet of the air inlet chamber 411 to the outside of the air inlet of the air inlet chamber 411, the direction of the sewage discharge movable port 44 is exactly opposite to the air inlet direction of the air inlet of the air inlet chamber 411. When the sewage discharge movable port 44 and the air inlet of the air inlet chamber 411 are close to each other, a large amount of discharged dust will be re-sucked into the air inlet of the air inlet chamber 411. In order to alleviate the impact of the above-mentioned problem, in some embodiments, the sewage discharge movable port 44 is a bent pipe mouth; when the sewage discharge movable port 44 rotates relative to the connecting component 461 and extends from the air inlet of the air inlet chamber 411 to the outside of the air inlet of the air inlet chamber 411, the second end of the sewage discharge movable port 44 is toward the side of the air inlet of the air inlet chamber 411. According to the specific design, the bent pipe mouth can be extended out of the side wall of the air inlet of the air inlet chamber 411, thereby achieving a good dust removal effect.

[0086] In actual implementation, the air inlet of the air inlet chamber 411 is provided with an air outlet bracket 47; the air outlet bracket includes a ring-shaped tray 471 and a connecting frame 472. The ring-shaped tray 471 is fixed to the outer wall of the air inlet of the air inlet chamber 411, and the connecting frame 472 is fixed to the ring-shaped tray 471 and extends into the air inlet chamber 411. The first end of the cap 45 is connected to the ring-shaped tray 471 via a first rotating shaft. The second end of the active sewage discharge port 44 is rotatably connected to the connecting frame 472 via a second rotating shaft 473. During assembly, the active sewage discharge port 44 and the linkage drive device 46 can be first installed on the connecting frame 472, and then the ring-shaped tray 471 can be fixed to the air inlet of the air inlet chamber 411, thereby facilitating assembly. In addition, the inner ring of the ring-shaped tray 471 can also be formed with a protruding air inlet guide channel, which can differentiate the directions of the airflow for intake and the airflow for dust discharge, thereby further achieving a good dust discharge effect.

[0087] Regarding the linkage drive device 46 driving the sewage discharge port 44 and the cap 45, the following embodiment of the present application only takes the linkage drive device 46 driving the sewage discharge port 44 and indirectly driving the cap 45 as an example. It is easy to understand that in the implementation, the linkage drive device 46 can also be used to drive the cap 45 and indirectly drive the sewage discharge port 44. The above-mentioned air filter, wherein the linkage drive device 46 includes: a first paddle 441 that rotates synchronously with the sewage discharge port 44; the driving component includes: a driving motor, the power output end of the driving motor is provided with a second paddle 442, the second paddle 442 is opposite to the first paddle 441, and is used to be driven by the driving motor, so that the second paddle 442 paddles the first paddle 441 to rotate, causing the cap 45 to rotate to open the air inlet of the air inlet chamber 411 and the second end of the sewage discharge port 44 to flip out of the air inlet of the air inlet chamber 411.

[0088] For energy conservation purposes, during the long operation of the air filter, the cover retaining cap is rotated to open the air inlet of the air inlet chamber 411 and the second end of the active sewage discharge port 44 is flipped out of the air inlet of the air inlet chamber 411 to stabilize its position outside the air inlet of the air inlet chamber 411. The linkage drive device 46 includes a torque spring 463; a second rotating shaft 473 that rotates synchronously with the active sewage discharge port 44; a first end of the torque spring 463 is fixed to the second rotating shaft 473, and a second end of the torque spring 463 is fixed to the air outlet bracket 471. The drive motor is a servo. The linkage drive device 46 includes an electromagnetic brake 464, disposed between the second rotating shaft 473 and the air outlet bracket 471, for limiting the rotation of the second rotating shaft 473 when power is off and releasing the restriction on the rotation of the second rotating shaft 473 when power is on. The specific operating principle is as follows: driven by the drive motor, the second paddle 442 rotates the first paddle 441, causing the cover 45 to rotate and open the air inlet of the air inlet chamber 411. The second end of the active waste discharge port 44 flips out of the air inlet of the air inlet chamber 411 and extends out of the air inlet of the air inlet chamber 411. Simultaneously, the second rotating shaft 473 rotates synchronously with the active waste discharge port 44, causing the torque spring 463 to accumulate force. De-energizing the electromagnetic brake 464 allows the electromagnetic brake 464 to rotate the second rotating shaft 473, thereby restricting the rotation of the active waste discharge port 44 and the cover 45. When the air filter needs to be closed, the electromagnetic brake can be energized to release the restriction on the rotation of the second rotating shaft. Under the force of the stored torque spring, the cap 45 rotates to close the air inlet of the air inlet chamber 411 and the second end of the movable sewage discharge port 44, flipping from the outside of the air inlet of the air inlet chamber 411 to extend into the air inlet of the air inlet chamber 411. The electromagnetic brake and the torque spring can cooperate to quickly close the air inlet of the air inlet chamber 411 and the movable sewage discharge port 44 (in practice, it can be less than 0.1 seconds). The air filter provided in this embodiment is suitable for special emergency accident environments.

[0089] To further enhance safety, the air filter further includes: a first Hall effect sensor for detecting the position of the active sewage discharge port 44 extending outside the air inlet of the air inlet chamber 411; and a second Hall effect sensor for detecting the position of the active sewage discharge port 44 extending inside the air inlet of the air inlet chamber 411. By monitoring the position of the active sewage discharge port 44, the position of the active sewage discharge port 44 can be determined in real time.

[0090] The fan that provides air volume to the air filter can be an external fan. In some embodiments, an internally configured filter fan can also be used. The air inlet side of the filter fan is connected to the exhaust chamber 413, and the air outlet side of the filter fan is connected to the exhaust port of the exhaust chamber 413.

[0091] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0092] It is understood that the related features in the above devices can be referenced to each other. In addition, the "first", "second", etc. in the above embodiments are used to distinguish between the embodiments, and do not represent the advantages and disadvantages of the embodiments.

[0093] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0094] Similarly, it should be understood that in order to streamline the present disclosure and aid understanding of one or more of the various inventive aspects, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed apparatus should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Accordingly, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of the invention.

[0095] It will be appreciated by those skilled in the art that the components of the apparatus in the embodiment may be adaptively changed and arranged in one or more apparatuses different from the embodiment. The components in the embodiment may be combined into one component, and furthermore they may be divided into a plurality of subcomponents. All features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all components of any apparatus so disclosed may be combined in any combination, except that at least some of such features are mutually exclusive. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0096] Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of the present invention and to form different embodiments. For example, in the claims below, any of the claimed embodiments may be used in any combination. The various component embodiments of the present invention may be implemented in hardware, or in combinations thereof.

[0097] It should be noted that the above embodiments illustrate rather than limit the invention, and that alternative embodiments may be devised by a person skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs placed between brackets should not be construed as limiting the claims. The word "comprising" does not exclude the presence of parts or components not listed in the claims. The word "a" or "an" preceding a part or component does not exclude the presence of a plurality of such parts or components. The invention may be implemented by means of an apparatus comprising several different parts. In claims enumerating several parts, several of these parts may be embodied by the same component item. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

[0098] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiment based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An air filter, characterized in that: include: A cyclone filter chamber, comprising an air inlet chamber, a dust collection chamber, an exhaust chamber, and a cyclone filter, wherein the air inlet chamber is provided with an air inlet, the air inlet of the cyclone filter is provided in the air inlet chamber, the dust exhaust port of the cyclone filter is provided in the dust collection chamber, and the exhaust port of the cyclone filter is provided in the exhaust chamber; There are multiple cyclone filters, which are arranged in parallel; a sewage exhaust fan, wherein the air inlet of the sewage exhaust fan is connected to the dust collecting chamber; A sewage discharge pipe, wherein a first end of the sewage discharge pipe is connected to a sewage discharge port of the sewage discharge fan; A movable sewage discharge port, wherein a first end of the movable sewage discharge port is connected to the second end of the sewage discharge pipe; A cover cap is used to seal and buckle the movable sewage discharge port into the air inlet of the air inlet chamber; A linkage drive device, used for driving the cover cap to open the air inlet of the air inlet chamber and driving the movable sewage discharge port to extend from the air inlet of the air inlet chamber to the outside of the air inlet of the air inlet chamber; The linkage drive device includes: a first paddle that rotates synchronously with the sewage discharge movable port, and a driving component; The driving component includes: a driving motor, a second paddle is provided at the power output end of the driving motor, and a driving component, the second paddle is opposite to the first paddle, and is used for, under the drive of the driven motor, the second paddle to paddle the first paddle to rotate, so that the cap rotates to open the air inlet of the air inlet chamber and the second end of the sewage discharge active port is flipped from the air inlet of the air inlet chamber to extend out of the air inlet of the air inlet chamber.

2. The air filter according to claim 1, characterized in that The linkage drive device includes: a connecting component, the connecting component connects the cap and the sewage discharge movable port, and the driving end of the driving component is used to drive the cap or the sewage discharge movable port to make the cap and the sewage discharge movable port linked.

3. The air filter according to claim 2, characterized in that The first end of the cap is rotatably connected to the air inlet chamber; The first end of the connecting member is rotatably connected to the cap, and the first end of the connecting member is rotatably connected to the sewage discharge port; The second end of the movable sewage discharge port is rotatably disposed in the air inlet chamber; The driving end of the driving component is used to drive the cover cap to rotate relative to the air inlet chamber, or the driving end of the driving component is used to drive the sewage discharge movable port to rotate relative to the connecting component.

4. The air filter according to claim 3, characterized in that The sewage discharge movable port is a bent pipe mouth; When the movable sewage discharge port rotates relative to the connecting component and extends from the air inlet of the air inlet chamber to the outside of the air inlet of the air inlet chamber, the second end of the movable sewage discharge port faces the side of the air inlet of the air inlet chamber.

5. The air filter according to claim 3, characterized in that The air inlet of the air inlet chamber is provided with an air outlet bracket; The air outlet bracket includes an annular tray and a connecting frame. The annular tray is fixed to the outer wall of the air inlet of the air inlet chamber. The connecting frame is fixed to the annular tray and extends into the air inlet chamber. The first end of the cover cap is connected to the annular tray via a first rotating shaft; The second end of the movable sewage discharge port is rotatably connected to the connecting frame via a second rotating shaft.

6. The air filter according to claim 5, characterized in that The linkage drive device includes: a torque spring; The second rotating shaft rotates synchronously with the sewage discharge movable port; The first end of the torsion spring is fixed to the second rotating shaft, and the second end of the torsion spring is fixed to the air outlet bracket.

7. The air filter according to claim 6, characterized in that The linkage drive device includes: an electromagnetic brake, which is arranged between the second rotating shaft and the air outlet bracket, and is used to limit the rotation of the second rotating shaft in a power-off state, and release the restriction on the rotation of the second rotating shaft in a power-on state.

8. The air filter according to claim 7, characterized in that Also includes: a first Hall sensing element for detecting a position where the sewage discharge movable port extends out of the air inlet of the air inlet chamber; A second Hall sensing element is used to detect the position of the sewage discharge movable port extending out of the air inlet of the air inlet chamber.

9. The air filter according to any one of claims 1 to 8, characterized in that: Also includes: A filter fan, wherein the air inlet side of the filter fan is communicated with the interior of the exhaust chamber, and the air outlet side of the filter fan is connected to the exhaust port of the exhaust chamber.

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