499 results about "Air cleaner" patented technology

The invention discloses a crankcase air supply system, a crankcase air supply control method, a controller and a vehicle, and relates to the field of hydrogen internal combustion engines. The crankcase air supply system comprises a first air supply pipeline communicating with an air outlet of a supercharger and a first end of a four-way valve, and a second air supply pipeline communicating with an air outlet of a pressurized air storage tank and a second end of the four-way valve; the air outlet of the air filter of the hydrogen internal combustion engine is communicated with the third end of the four-way valve, the four-way valve is communicated with the air supply port of the crankcase, and when the hydrogen internal combustion engine is in a high-load and high-moisture state, the opening degree of the first flow adjusting valve is controlled to be larger than that of the second flow adjusting valve. The opening degree of the second flow adjusting valve is larger than that of the third flow adjusting valve. The method is implemented on the basis of the supercharger, the pressurized gas storage tank and the air filter, and the opening degree of each flow regulating valve is regulated, so that the inlet gas water content is reduced while the gas supplementing requirement of the crankcase is met, and the aim of improving the operation reliability of the hydrogen internal combustion engine is achieved.

The invention relates to a flat filter element and an air filter. A filter medium body of the flat filter element is completely enclosed by a seal. Within the area enclosed by the seal, the filter medium of the filter medium body has an interruption. In the area of ​​the interruption, the filter medium body is closed by a sealing element. The sealing element prevents the passage of unfiltered air from the raw side to the clean side. The sealing element is dome-shaped. In the assembled state, a support finger of a first housing part engages the sealing element from a first side and extends completely through the filter medium body parallel to the main flow direction, so that the support finger protrudes from the filter medium body on a second side. The dome-shaped area of ​​the sealing element spans the protruding support finger.The sealing element is positioned between the support finger of the first housing part and a support element of a second housing part. The support finger and the support element provide support for the filter medium body on both sides by means of the sealing element.

An air filter for an air filter assembly in an air conditioner is provided, in particular for filtering out particles, preferably pollutants, from air. The air filter contains a filter element with an electrically conductive layer. The air filter also has a housing that partially encompasses a housing interior into which the filter element is inserted. The air filter also has a terminal on the housing that can be contacted from outside the housing interior, which is made of an electrically conductive material and is connected to the conductive layer of the filter element.

The utility model discloses a special-shaped air filter which comprises a shell, the shell is forwards connected with an air outlet end cover, the shell is backwards connected with a rear end cover, a filter element is arranged in the shell, an air inlet is formed in the shell, and an air outlet is formed in the air outlet end cover. The axial direction of the filter element extends in the front-back direction, a supporting cylinder used for supporting the front end of the filter element is arranged on the front end face of the shell, and the front end of the filter element is inserted into the supporting cylinder. A cavity between the filter element and the shell forms an air inlet cavity, the air inlet cavity is communicated with an air inlet, and the air inlet is in a big-end-down horn mouth shape. The filter element comprises an outer filter element and an inner filter element which are coaxially sleeved together; two groups of filter elements are arranged in the shell side by side up and down at intervals. The air inlet with the small outside and the large inside enables airflow to be better expanded to all the air inlet cavities, flow collection of all parts of the surface of the filter element is more uniform, and the situation that some parts of the filter element are blocked in advance and the overall service life of the filter element is shortened is avoided. The two groups of filter elements are arranged in parallel, so that the same air filtering capacity requirement is met, the diameters of the filter elements are reduced, and the device is more matched with an in-vehicle mounting space which is narrower in the left-right direction and higher in height.

A system and methods are provided for an air filter that detects a pressure differential across the filter, due to contaminant buildup, and indicates when the filter needs to be serviced. The air filter comprises a filter medium supported within a frame and a differential pressure detector incorporated into the frame. The frame supports the filter medium within a HVAC system, and the filter medium removes contaminants from an airstream flowing through the HVAC system. The differential pressure detector signals when the pressure differential across the air filter reaches a threshold value due to contaminant buildup within the filter medium. The differential pressure detector includes circuitry that wirelessly signals an application stored on a user's mobile device to display a notification to the user when the air filter needs to be cleaned or replaced to minimize energy consumption by the HVAC system.

The invention relates to the technical field of combustion engine filters, and discloses an air filter shell component and an air filter element structure for a vehicle, and the air filter shell component and the air filter element structure for the vehicle structurally comprise an upper shell, a lower shell, a filter device, an outer filter shell, blades and a filter element structure. The upper shell and the lower shell can be detached, the internal filtering device can be conveniently maintained and replaced, the replacement efficiency is improved, a vibration piece is arranged on the outer filtering shell, an elastic column is in contact with a shifting piece, the shifting piece shifts the elastic column to vibrate left and right, a brush is driven to shake together, and the vibration piece is arranged on the outer filtering shell. The pre-filtering net is arranged on the base, dust adhering to the filtering net is cleaned, the filtering and intercepting effect of the pre-filtering net is guaranteed, the multiple elastic columns are connected into a whole through the springs on the elastic columns, linkage is generated among the multiple elastic columns, the vibration effect of the elastic columns is improved, the vibration frequency of the elastic columns is higher, and the cleaning effect of the brush on the filtering net is improved.

Air inlet holes are formed in the surface of the air filter, the self-cleaning air filter comprises a cleaning device, the cleaning device comprises a cleaning frame arranged outside the air filter in a sleeving mode, the cleaning frame is detachably provided with a cleaning brush, and bristles of the cleaning brush abut against the outer wall of the air filter. The cleaning device comprises a driving assembly in transmission connection with the cleaning frame, and the driving assembly drives the cleaning frame to drive the cleaning brush to rotate in the circumferential direction of the air filter so as to brush off sundries at the air inlet holes. In the rotating process of the cleaning frame, the cleaning brush is driven to rotate around the outer wall of the air filter in the circumferential direction, sundries attached to the air inlet holes in the outer wall are cleaned, the situation that the sundries block the air inlet holes is avoided, the cleaning brush conducts cleaning work in the working process of the air filter, the air inlet holes are kept not blocked in the working process of the air filter, and the service life of the air filter is prolonged. The air filter can work stably and reliably, manual cleaning is not needed, the work efficiency can be improved, and potential safety hazards existing in manual operation are avoided.

An apparatus and methods are provided for an air filter precleaner for an open air filter box. The air filter precleaner includes a filter medium between a base and a grating that are fastened over an opening into an interior of the air filter box. The filter medium comprises a sheet of filter material having a shape and a size suitable for being supported between the base and the grating. The base is a rigid member that supports the filter medium in a sheet configuration, such that the airstream passes through the filter medium before entering the air filter box. The grating is a rigid member comprising a screen portion surrounded by a frame that is configured to be fastened onto the air filter box. The screen portion comprises a shaped lattice that allows the airstream to pass through the filter medium before entering the air filter box.

The outlet of a blower extends through a hole in a circuit board to which the blower is attached. Electronics on the board control operation of the blower. The blower can be configured as two blowers in series, to provide more precise control of airflow. An air filter, such as an N95 filter is releasably attached to the blower intake on a front side of the circuit board. The front side of the board can be attached to a support panel, with a gap therebetween, and the air filter facing and in fluid communication with the gap. An air filter gasket is positioned around the edges of the front side of the circuit board, such that air sucked through the air filter over the intake of the blower, first passes through the air filter gasket between the circuit board and the support panel. The air filter gasket can be coarser than the air filter. The blower is well suited for use in a fuel cell apparatus, for supplying an electronically controlled airflow to the fuel cell.

The utility model belongs to the technical field of waste liquid recycling equipment, and particularly relates to a dichlorofluoroethane waste liquid recycling device which comprises a waste liquid cylinder, the interior of the waste liquid cylinder is of a cavity structure, waste liquid is layered after being poured into the waste liquid cylinder for standing, and the waste liquid in the cylinder is divided into three layers, namely an upper floating oil layer, a middle standing layer and a lower particle layer; an observation window and an air filter are respectively arranged at the top of the waste liquid cylinder; a waste liquid outlet communicated with the waste liquid cylinder is formed in one side of the bottom of the waste liquid cylinder; a collector communicated with the waste liquid cylinder is arranged outside the waste liquid cylinder; and a recycling part is also arranged in the cylinder body of the waste liquid cylinder. According to the recycling device, the recycling component is arranged in the waste liquid cylinder, the purposes of recycling and reusing the dichlorofluoroethane waste liquid and reusing the dichlorofluoroethane waste liquid by using a middle standing layer are achieved by adopting a physical method and through natural standing, layering, semi-automatic liquid taking and filtering of the waste liquid, the purposes of no power consumption, safety and environment-friendly recycling are achieved, the using cost is low, and the recycling device is suitable for industrial production. And benefits are brought to enterprises.

The invention discloses an air filter for a vehicle, and relates to the field of automobile accessories, the air filter comprises a filter main body, the outer side wall of the filter main body is fixedly connected with a mounting lug, and the inner hexagon bolt penetrates through the mounting lug and is in threaded connection with the vehicle; the filter element is rotationally arranged in the lower shell and used for filtering air entering the engine; the dust removal mechanism comprises a wind speed detector fixedly connected to the interior of the connecting pipe, a clamping spring fixedly connected to the inner side wall of the lower shell and a movable plate movably arranged in the lower shell and used for knocking the filter element, and the outer side wall of the movable plate is fixedly connected with the outer side wall of the clamping spring. According to the air filter for the vehicle, periodic collision is formed between the movable plate and the edges of the filter element in the rotating state, the vibration frequency of the movable plate is in positive correlation with the rotating speed of the filter element, and dust attached to the inner surface of the movable plate can be separated through vibration generated by collision.

The invention discloses a constant-resistance maintenance-free air filter powered by a vehicle gas turbine. The constant-resistance maintenance-free air filter comprises an air inlet waterproof unit, an inertia separation unit, a dust extraction system and a gas turbine air inlet connecting section. The air inlet waterproof unit, the inertia separation unit and the gas turbine air inlet connecting section are sequentially connected in a sealed mode. A grating is arranged at the upstream end of the air inlet waterproof unit, and a drainage hole is formed in the bottom of the air inlet waterproof unit; the grating is used for intercepting water in external air; water is discharged from the drainage hole; a dust collection cavity and a straight-flow type rotational flow pipe set are arranged in the inertia separation unit, the straight-flow type rotational flow pipe set is used for separating air and dust, the separated dust enters the dust collection cavity, and the separated air enters the gas turbine through the gas turbine air inlet connecting section; the dust suction system is connected with the inertia separation unit, communicates with the dust collection cavity and is used for sucking out dust in the dust collection cavity, a filter element is not needed, and the problems that resistance of a traditional filter element is increased due to dust accumulation, and an air filter is fast to block and needs to be frequently maintained in a high-dust environment are solved.

The utility model relates to the technical field of air filter machining, in particular to an automobile air filter machining turnover device which comprises a base, supporting frames are fixedly installed on the two sides of the top of the base, an electric clamping jaw is rotationally connected between the opposite sides of the pair of supporting frames, and a driving assembly is arranged at the top of the base. The driving assembly is used for driving the pair of electric clamping jaws to turn over synchronously. Wherein the top of the base is slidably connected with a feeding plate, the top of the feeding plate is provided with a positioning piece used for positioning an air filter, the rotating shaft rotates to drive the electric clamping jaws to rotate, the pair of electric clamping jaws are driven to rotate synchronously, and meanwhile the pair of air filters can be machined in cooperation with the feeding plate. The machining efficiency is improved, different air filters can be positioned within a certain range through the mode that the positioning columns are adjustable, deviation is prevented, and it is ensured that the electric clamping jaw can stably clamp the air filters.

The present invention relates to a filter element (1) for filtering a fluid, in particular an air filter element for an air filter system, comprising a filter bellows (10) arranged around a longitudinal axis (L) and at least partially enclosing an interior space (11). The filter bellows (10) has a first end (101) and a second end (102) opposite it. Furthermore, the filter element comprises an end disk (12) at the first end (101) open to the interior space (11) and a further end disk (13) at the opposite second end (102), wherein at least one circumferential sealing contour (14) is arranged on the end disk (12) open to the interior space (11), the sealing contour having a locally limited recess (141) with respect to a radial direction (R) and projecting radially inwards beyond an inner circumference of the filter bellows (10) in the region of the locally limited recess (141).Furthermore, a filter device (200) with such a filter element (1) is disclosed.

The embodiment of the invention provides a fuel cell gas supply system and a gas supply method, and relates to the technical field of cells. The air supply system comprises an air filter, a turbocharger, a three-way proportional valve, an air compressor, a three-way valve and an electric pile of a fuel cell; the electric pile comprises a cathode inlet and a cathode outlet; the three-way proportional valve comprises an inlet, a first channel and a second channel; the three-way valve comprises an inlet, a first channel and a second channel; an outlet of the air filter is connected with a first branch and a second branch, the first branch is connected to an inlet of the three-way proportional valve, the second branch is connected with a second channel of the three-way proportional valve through the turbocharger, and the first channel of the three-way proportional valve is connected with a cathode inlet of the electric pile through the air compressor; a cathode outlet of the electric pile is connected to an inlet of the three-way valve, a first channel of the three-way valve is used for direct exhaust, and a second channel of the three-way valve is used for exhaust through the turbocharger. Therefore, the fuel cell can stably supply air, and the energy consumption of the air compressor is effectively reduced.

The utility model discloses a gasoline engine with a partition plate type carburetor, which comprises a gasoline engine casing, and an air filter and the partition plate type carburetor are mounted on the gasoline engine casing. The grounding wire is arranged on the gasoline engine shell, and a plug is arranged at one end of the grounding wire; the restraining and limiting mechanism comprises a placing base installed on the outer side face of the gasoline engine shell, a rotating shaft rotationally arranged on the inner side face of the placing base, a fixing roller arranged on the rotating shaft in a sleeving mode and a limiting frame installed at the inner bottom of the placing base, the grounding wire can be wound around the outer wall of the fixing roller, and the plug can be inserted into the limiting frame; the inner side face of the limiting frame is provided with abutting blocks which are symmetrically distributed, and when the plug is inserted into the limiting frame, the plug abuts against the side surfaces of the abutting blocks. The gasoline engine has the beneficial effects that through the designed constraint limiting mechanism, the constraint on the ground wire can be increased, the limitation on the plug can be increased, and the overall reliability and durability of the gasoline engine can be improved.

The utility model relates to the technical field of filters, and particularly discloses an air filter with lugs on a frame. The filter comprises a frame, a filter element and a sealing ring, the filter element is arranged in the frame, a convex edge is arranged on the peripheral wall of the frame, and a positioning convex block is arranged at the bottom of the convex edge of the frame; the sealing ring is arranged on the periphery of the frame in a sleeved mode, a first groove connected with the protruding edge in a matched and clamped mode is formed in the inner circumferential wall of the sealing ring, and a second groove connected with the positioning protruding block in a matched and clamped mode is formed in the first groove. When the sealing ring is assembled on the frame in a sleeved mode, the protruding edge of the frame is clamped in the first groove of the sealing ring, and meanwhile the included positioning protruding block is clamped in the second groove of the sealing ring, so that the sealing ring is stably connected to the frame of the filter in a sleeved mode. The problem that sealing is not tight due to the fact that a sealing ring is prone to deformation, displacement and even disengagement in the installation and use process is solved.

To provide a ventilation device for a grain tank that can simplify piping without installing an exhaust pipe on centralized piping and allows efficient operation of an exhaust system.SOLUTION: A ventilation device for a grain tank includes: a filter unit 17 installed in an upper part of a grain tank 11 for storing grains that are loaded from a loading port 40 to separate air from dust; and a blower unit 18 for discharging the air that is separated by the filter unit 17 to the outside. The filter unit 17 includes: a filter 19 for separating internal air from powder such as dust; a housing 20 for storing the filter 19; and a back washing mechanism 21 for back washing the filter 19. The blower unit 18 includes: a blower 26 including a suction port and an exhaust port in the housing 23; an air volume regulating valve 27 connected to the exhaust port of the blower 26; and a controller 32 for controlling the back washing mechanism 21, the blower 26 and the air volume regulating valve 27.SELECTED DRAWING: Figure 2

The utility model provides a hydraulic station oil tank oil supplementing and exhausting integrated device, and relates to the field of hydraulic parts, the hydraulic station oil tank oil supplementing and exhausting integrated device comprises a conduction assembly, the top end of the conduction assembly is fixedly connected with a guiding assembly, the conduction assembly comprises a conduction body and a second connecting ring, and the bottom end of the conduction body is provided with a circulation opening; the guiding assembly comprises a guiding pipe, one end of the guiding pipe is fixedly connected to the through conductor, an open hole is formed in the outer side of the guiding pipe, a connector is arranged at the open hole, and the outer side of the connector is sleeved with a dustproof cap. By means of the design, the problems that an oil tank of a hydraulic station is slow in oil supplementing, air is prone to being mixed in the oil supplementing process, particulate pollutants are prevented from invading a system through an oil tank breathing opening, and oil pollution is caused are effectively solved, and the device is easy to manufacture, low in machining cost and high in field practicability.

The present invention relates to a pressure edge frame device for testing filter elements. The device comprises a frame structure formed by assembling a plurality of square pressure strips. Adjacent square pressure strips are connected by angle fixing plates, bolts, and nuts. Long holes for the bolts to pass through are provided in the middle of the square pressure strips. The bolts pass through the long holes of the square pressure strips and are connected to the nuts and can be adjusted in position to change the size and shape of the pressure edge frame device. Compared with the prior art, the device adjusts the size by adjusting the position of the bolts and nuts along the long holes of the square pressure strips. This avoids the need for pressure plates of different sizes to be configured for filter elements of different sizes during testing, resulting in a large number of pressure plate specifications, high costs, and complex processing. By providing beveled pressure strips and adjusting the positions of the bolts and nuts, the shape can be adjusted. The device is suitable for performance testing of quadrilateral, non-square, or polygonal flat-plate air filter elements for automobiles, and solves the problem of long tooling preparation cycles for filter element verification.

The present invention provides an air filter element support device, which includes a bottom plate, a limit ring, a filter element support assembly, a rubber pad, a washer and a fastening nut. The bottom plate serves as the support part of the filter element support device, and the limit ring is welded above the bottom plate as the filter element installation part. The filter element support assembly is welded inside the ventilation holes of the limit ring and is used to install and fix the filter element. At the top of the screw of the filter element support assembly, a rubber pad, a washer and a fastening nut for pressing and fixing the filter element are installed. This device can achieve the stable fixation of the air filter element of special vehicles in the horizontal and vertical directions. Moreover, the filter element can be conveniently replaced by this device, which can solve the problem that it is difficult to replace the filter element of special vehicles. At the same time, this support device has the advantages of simple structure, small resistance, light overall weight and good installation processability.

The utility model relates to the technical field of vehicles, and provides an air inlet silencer, an air inlet system and a vehicle, the air inlet silencer is used for the air inlet system of the vehicle, the air inlet silencer comprises a shell with an inner cavity, the inner cavity forms a resonant cavity, the shell is provided with an air inlet and an air outlet which communicate with the resonant cavity, the air inlet is used for communicating with an air filter, and the air outlet is used for communicating with an air outlet. The air outlet is communicated with an engine. According to the scheme, the problem that in the prior art, noise of an engine air inlet system is large can be solved.

The application relates to the technical field of electrical equipment, and discloses an air purifier, a sterilization and disinfection method and device of the air purifier, wherein the sterilization and disinfection method of the air purifier comprises the following steps: receiving an opening instruction of a plasma generating device; when the opening instruction of the plasma generating device is received, intermittently controlling the plasma generating device to work. That is, after the plasma generating device works for a period of time, the plasma generating device stops working, and then restarts working, and the working and stopping are repeated; when the plasma generating device stops working, not only can the plasma generating device be cooled, but also there is no dielectric loss, so that the temperature of the plasma generating device itself is reduced, and the problem that the filter screen material close to the plasma generating device is damaged can be solved.

This utility model belongs to the field of gasoline engine technology, and in particular to a multi-layer filtered intake gasoline engine, including a protective shell. A gasoline engine body is fixedly installed on one side inside the protective shell, and a mounting box is fixedly installed on the left side of the protective shell. A movable plate is installed on the left side of the mounting box, and an air filter is installed inside the mounting box. The air filter inside the mounting box filters the air drawn into the gasoline engine body, preventing dust from being drawn into the engine body, resulting in cleaner air and preventing dust from clogging the intake pipes. This leads to more powerful gasoline engines. Furthermore, the intercooler reduces the intake temperature of turbocharged engines, improving charging efficiency by cooling the high-temperature compressed air, ensuring stable engine operation, and reducing fuel consumption, thus enhancing the practicality of the device.

Internal combustion engine with a crankcase ventilation system (23), comprising a crankcase (17), an intake air line (2), wherein the intake air line (2) comprises a throttle valve (6) and an air filter (8), as well as with a crankcase ventilation line (4) for ventilating the crankcase (17) and a crankcase ventilation line (3) for flushing the crankcase (17), wherein the crankcase ventilation line (4) is arranged at a first connection point (13, 70) downstream of the air filter (8) to the intake air line (2), characterized in that a sensor unit (18) is arranged in the crankcase ventilation line (3) downstream of a first flow influencing device (7) and upstream of a first backflow prevention device (26), wherein the first connection point (13, 70) is spaced downstream from a crankcase ventilation line connection (28) is arranged on the intake air line (2),so that a malfunction of the crankcase ventilation system (23) can be detected by the sensor unit (18).

The utility model relates to the technical field of vehicles, in particular to a support structure, a braking system and a vehicle. The support structure comprises a first mounting assembly and a second mounting assembly, the first mounting assembly comprises bearing pieces and connecting pieces arranged in pairs, the connecting pieces arranged in pairs are arranged at intervals in the X direction, the bearing pieces are connected between the connecting pieces arranged in pairs, the connecting pieces are used for being connected with a frame longitudinal beam, and the bearing pieces are used for being connected with an air compressor; the second mounting assembly is connected to one of the connecting pieces arranged in pairs, the second mounting assembly is arranged on the side, away from the bearing piece, of the connecting piece in the X direction, the second mounting assembly comprises a first mounting piece and a second mounting piece, the first mounting piece and the second mounting piece are sequentially arranged in the Y direction, the first mounting piece is used for being connected with a dryer, and the second mounting piece is used for being connected with the dryer. The second installation part is used for being connected with an air filter. According to the support structure, the space utilization rate can be increased, wiring harness arrangement is simplified, and therefore the safety and reliability of a vehicle are improved.

An air filter monitoring system and method includes a plenum, a pressurization blower, a first motor driving the pressurization blower, a first motor current sensor, a recirculation blower, a second motor driving the recirculation blower, a second motor current sensor, a speed selector, a fresh air filter, a recirculation air filter, a pressurization blower speed sensor, a recirculation blower speed sensor, and a non-transitory computer readable medium comprising a program instruction for permitting a controller to monitor the HVAC system. The program instruction is adapted to produce a first and a second motor control signal to drive independently the pressurization blower and the recirculation blower, respectively. The first and second motor control signals are a function of the speed sensor signals to maintain a constant speed. Comparing a first and second motor current sensor signal to a baseline and triggers a replacement action when either signal falls below a threshold.

The invention provides a filter element unit for an air filter and the air filter. The filter element unit is suitable for being installed in a shell (30) of the air filter and comprises one or more filter element bodies (17) made of filter materials, and each filter element body (17) comprises a hollow cylindrical structure, extends in the axial direction and is provided with a first end and a second end; the first end cover (18) is arranged at the first end part of each filter element body (17) so as to support and connect the first end part; wherein the first end cap (18) comprises a sealing edge (183) surrounding the first end portion, the sealing edge (183) is in the shape of a parallelogram, and each of the four corners of the shape of the parallelogram is an acute angle or an obtuse angle. According to the filter element unit, the occupied space of the filter element unit can be reduced, and the filter element unit can be prevented from being mounted reversely.

The invention relates to the technical field of air purification, in particular to an air filter device for preventing and controlling atmospheric pollution, which comprises a casing, a mounting hoop and a plurality of through grooves formed in the outer side of the casing, a plurality of arc-shaped plates are arranged on the inner side of the casing and form a cylinder, flexible filter plates which are connected with one another are arranged on the outer sides of the arc-shaped plates, and the through grooves are formed in the outer side of the casing. According to the air filter device for preventing and treating the atmospheric pollution, the arc-shaped plates are driven to deform through the arranged filter adjusting mechanisms, the flexible filter plates connected with one another are driven to stretch out and draw back synchronously, and therefore the air filter device for preventing and treating the atmospheric pollution can be used for preventing and treating the atmospheric pollution; when the pollution concentration suddenly rises, the filtering area can be increased, the filtering speed is prevented from being too high, the pressure drop suddenly rises and the filtering efficiency is prevented from being reduced, when the concentration is low, the area is reduced, the filtering capacity redundancy is reduced, the energy consumption and the operation and maintenance cost are reduced, and the filtering requirements in different environments are met.

The utility model relates to the technical field of chain saws, and discloses an environment-friendly chain saw with a filtering and collecting mechanism, which comprises a chain saw, a shell of the chain saw is buckled with a sealing cover which is matched with a mounting cavity of an air filter in a covering manner; an air inlet box communicated with an air inlet of the chain saw is arranged in the mounting cavity, the air filter is locked and fixed above the air inlet box through a locking knob, and the air filter is fixed above the air inlet box through a locking knob, so that a filter element is more convenient to clean and replace. When the filter element needs to be replaced, the filter element can be easily taken out to be cleaned or replaced only by unlocking the knob, and the pressing plate, the filter element and the supporting framework are locked and fixed on the air inlet box through the locking bolt lock, so that the time for maintaining and replacing the filter element is shortened, a user can finish the maintenance work more quickly, and the working efficiency is improved.