28 results about "Air filter" patented technology

An air quality monitoring arrangement is associated with an enclosed cab of an agricultural tractor used for towing or carrying spraying implements for treating crop with substances which might be toxic or otherwise harmful to people. A signal from a contaminant sensor is sent to a control arrangement which compares the actual sensed contamination of the air within the cab over time with a value from a performance map representing the performance expected from normal performance of the air circulating system of the cab. When the sensed contamination is higher than that of the performance map the operator is warned of a malfunction. The blower of the air circulating system may have its speed increased so as to pressurize the cab so as to exclude the entry of contaminated air through seals and other small openings of the cab. The air filters used are coded and recognized by the control system which keeps track of the service time of the filters and warns an operator when the service time exceeds that of a stored time value related to the particular filter.

The invention discloses an efficient air purifying and filtering method. According to the method, a negative-ion generator and an electrostatic fiber material filtering unit jointly form an air purifying and filtering module, and negative ions are located at a wind feeding opening of an electrostatic fiber material in the wind inlet direction; the negative ions generated by the negative ion generator in the filtering module can be combined with dust or dust particles in the air, the air is charged, and the electrostatic fiber material filtering unit absorbs the particles; the air filtering module is low in wind resistance, high in efficiency and capable of eliminating PM2.5 and other fine particles, and belongs to an efficient filter. The purifying and filtering module is small in occupied space, efficient filtering of low wind resistance is achieved, ventilation energy consumption is greatly lowered, and the purifying and filtering module can be widely applied to air conditioners, air purifiers and central ventilation systems.

The invention provides a silent generator set which comprises a first cavity, a second cavity and a third cavity. The first cavity is of a non-seal structure and is provided with an air inlet, and an air filter is mounted in the first cavity. The second cavity is of a full-seal structure, and an engine, an air blower and a first-stage silencer are arranged in the second cavity. The third cavity is of a non-seal structure and is provided with a gas inlet and an air outlet, and a water tank, a cooling fan and a second-stage silencer are mounted in the third cavity. When a generator works, the sound generated during work of the generator set can be effectively lowered, and noise pollution of the generator set can be effectively reduced; by means of efficient water circulation, the temperature of the generator set can be reduced, and the use efficiency of the generator set can be improved; and by means of air circulation, heat generated by the generator set can flow fast, the temperature in a generator cavity can be reduced, and a protection function can be achieved on the generator set.

The invention discloses an air filter cleaning device. The device comprises a base frame with a pushing part on the left side, a cleaning cavity is formed in the position, on the upper side of the pushing part, in the left side end face of the base frame, a first sliding groove is formed in the inner top face of the cleaning cavity, a first screw rod is arranged in the first sliding groove, a cleaning sliding block is in fit connection with the first screw rod in a screw manner, a second sliding groove is arranged in the pushing part in a left-and-right extension manner, an embedding groove is formed in the position, on the right side of the pushing part, in the base frame, the left side end of the embedding groove and the extension tail end of the right side of the second sliding groove are arranged in a communication and penetration manner, a second screw rod is arranged between the inner wall of the right side of the embedding groove and the inner wall of the left side of the second sliding groove, a spline column is arranged at the position, above the second screw rod, of the inner wall of the right side of the embedding groove and the left side inner wall of the second sliding groove, a first conical wheel is fixedly connected to the second screw rod in the embedded groove, and a pushing sliding block which extends upwards is in fit connection with the second screw rod in the second sliding groove in a screw manner. The device is simple in structure, convenient to operate, high in safety, high in work efficiency and capable of reducing labor intensity.

The invention discloses a preparation method of a cellulose aerogel-based efficient air filtering membrane, and belongs to the field of air filtering materials. The preparation method comprises the following steps: performing water washing, soda boiling, oxidation and the like on microbial cellulose, dispersing in a mixed solution of tert-butyl alcohol and water to obtain cellulose dispersion liquids with different concentrations, pouring the cellulose dispersion liquids into molds for molding, and performing freeze drying to obtain the microbial cellulose aerogel-based efficient air filtering membranes with different thicknesses. The microstructure of the air filtering membrane is a three-dimensional nanometer network formed by microbial cellulose nanofibers, the macroscopic form of the air filtering membrane is in a thin film shape, and the membrane forming process is a physical process, is free of chemical reaction and is green, simple and convenient; the air filtering membrane with the thickness of 1-5mm prepared by the method has high filtering efficiency of removing PM0.3 at a high air flow rate, the highest filtering efficiency can reach 99.9% or above, the air resistance is less than 250Pa, the preparation process is simple, and large-scale production is facilitated.

The invention discloses a breathing boost device of an automobile engine, comprising an air inlet arranged in a shell at the front end of an automobile, wherein the rear port of the air inlet is connected with the air inlet of an engine air filter; the air outlet of the engine air filter is connected with an air inlet manifold of the engine; and the air inlet manifold of the engine is connected with the air inlet of the engine. By using the wind speed and the wind pressure generated at the front end of a driving car (including various sedan cars, camions and other vehicles), the breathing boost device can automatically adjust to increase the inlet pressure of the automobile engine, improve the engine power, reduce oil consumption and save energy. In addition, the breathing boost device is simple in structure, low in cost and not only easy for implementation on a new vehicle, but also applicable to modification of an old vehicle.

The invention discloses a composite filter plant for a fresh air fan. The composite filter plant for the fresh air fan comprises a primary filter screen, an efficient air filter screen, an electrostatic dust removal filter screen and a photocatalyst filter screen. The electrostatic dust removal filter screen and the photocatalyst filter screen are arranged between the primary filter screen and the efficient air filter screen, the photocatalyst filter screen is a thin film filter screen, nanometer titanium dioxide and tolyltriazole are mixed with each other to manufacture the thin film filter screen, and transition metal complexes are coated on the surfaces of the photocatalyst filter screen; the electrostatic dust removal filter screen is made of polypropylene treated by electrostatic electrets. The composite filter plant for the fresh air fan has the advantages that sterilization effects can be realized by the photocatalyst filter screen without perpendicular incidence of ultraviolet light, dust removal effects of electric fields can be realized by the electrostatic dust removal filter screen without being powered on, and accordingly energy consumption can be reduced; the composite filter plant can be washed, and the filter screens are convenient to clean.

The invention discloses a compound filter material high efficiency particulate air filter. The compound filter material high efficiency particulate air filter comprises a filter framework and a filtering main body component, wherein the filtering main body component comprises a PP-PET (Polypropylene-Polyethylene Terephthalate) compound filter material, a metal filter screen and a plurality of hot melting glue threads. The initial resistance of the PP-PET compound filter material under a normal temperature condition is 38 Pa, so that the initial resistance of the filter is relatively small, the resistance on air current passing through the filter is reduced, purified air current passing is facilitated, and damage or wear of the filter in a filtering process caused by large resistance is reduced, thereby enhancing the filtering performance, temperature resistance and moisture resistance of the filter and prolonging the service life of the whole filter. PET layers are arranged on both sides of a PP layer respectively, and play a role as a PP-PET compound filter material bracket, so that the whole PP-PET compound filter material keeps certain hardness and is not easy to deform, thereby enhancing the filtering strength of the whole filter. The compound filter material high efficiency particulate air filter further has the effects of enhancing the temperature resistance and the moisture resistance of the filter.

The invention provides an air filter and a sealing method thereof, wherein an air inlet and an air outlet are arranged at the same side of the air filter. The air filter comprises a shell body, a cover, a filter cartridge and a filter cartridge guide rail. The filter cartridge comprises a filter cartridge splint and a filter cartridge cover plate. The fixing, sealing, assembly and disassembly of the filter cartridge are achieved by the coordination between the shell body, the filter cartridge and the filter cartridge guide rail. According to the air filter, the air filter is provided with the filter cartridge guide rail similar to a cam structure, the sealing and fixing of the filter cartridge are achieved through the compression surface formed by the shell body and the filter cartridge cover plate and can be applied to the air filter and the sealing method both constrained by space layout, and changing and installation of the filter cartridge are convenient.

The invention discloses a road construction dust removal device capable of avoiding secondary pollution, and relates to the technical field of dust removal devices. The road construction dust removal device capable of avoiding secondary pollution comprises a fixed vehicle plate mechanism, wherein a dust suction mechanism is arranged at the position, close to the left side, of the top end of the fixed vehicle plate mechanism, an air filtering mechanism is fixedly connected to the position, close to the center, of the right side of the dust suction mechanism, the outer wall of the air filtering mechanism is movably connected with the outer wall of the fixed vehicle plate mechanism through the arranged dust suction mechanism, and a dust collecting mechanism is arranged at the position, close to the back face, of the top end of the fixed vehicle plate mechanism. According to the road construction dust removal device capable of avoiding secondary pollution, dust generated in the road construction process is extracted, dust in air is reduced, the influence of construction dust on the sight of constructors is effectively prevented, and the situation that the construction dust influences the physical health of roadside pedestrians or constructors is reduced.

The invention discloses an integral air filtering product for removing volatile organic compounds from target gas and preparing and using methods thereof, and particularly discloses a base material ofa formaldehyde conversion catalyst for removing formaldehyde from ambient air. The base material comprises at least one porous wall. The formaldehyde conversion catalyst is positioned in pores of theporous walls of the base material. A capturing layer comprises activated carbon and is provided on at least one porous spacing wall and used for removing VOCs capable of poisoning the formaldehyde conversion catalyst from the target gas.

The invention discloses an air purifier with humidifying performance. The air purifier comprises a shell (203), a suction device (204) and an air filtering layer (205), wherein the shell is provided with an air inlet (201) and an air outlet (202), and the suction device (204) and the air filtering layer (205) are located between the air inlet and the air outlet. The air filtering layer comprises multiple air-permeable water storage layers (101), retainers (102) and water containing space (103), wherein the retainers arranged on the adjacent air-permeable water storage layers at intervals, and the water containing space (103) is defined by the adjacent water-permeable water storage layers and the retainers. The retainers are disposed on the inner wall of the shell. Accordingly, the air filtering effect is guaranteed due to the fact that air of the air purifier is at least filtered through two air-permeable water storage layers and water between the water storage layers. Meanwhile, the air is humidified, the whole structure is ingenious and simple, and practicality is high.

The invention provides an air filtering device for a condensing furnace. The air filtering device comprises an inner smoke pipe elbow and an outer smoke pipe elbow, one end of the inner smoke pipe elbow is connected with one end of the straight inner smoke pipe; the other end of the inner smoke pipe elbow is connected with the filtering inner pipe; one end of the outer smoke pipe elbow is connected with one end of the straight outer smoke pipe, the other end of the outer smoke pipe elbow is connected with the filtering outer pipe, the filtering outer pipe is sleeved with the filter shell, an annular sealing ring is arranged between the filtering outer pipe and the filtering inner pipe, and the part between the filtering outer pipe and the filtering inner pipe is divided into a first cavity and a second cavity through the annular sealing ring. A first through hole is formed in the filter outer pipe corresponding to the first cavity, a second through hole is formed in the filter outer pipe corresponding to the second cavity, and a filter screen sleeves the outer wall of the filter outer pipe. As mentioned above, the air filtering device for the condensing furnace solves the problems that in the prior art, only a smoke exhaust function and an air inlet function are provided, and dust and particles in air cannot be filtered out.

The invention discloses an AGV intelligent protection trolley which is characterized by comprising an AGV intelligent power system (100), an air filtering device (200), a cover type protective isolation clothes hanging sliding device (300), cover type protective isolation clothes (400) and an intelligent control system (500). The AGV intelligent protection trolley is applied to the infectious disease prevention and treatment and the safety protection of the biochemical operation workers. The invention has the following beneficial effects that 1, the AGV intelligent protection trolley is convenient to wear, take off and disinfect rapidly; 2, the main components can be repeatedly used, and the waste and environmental pollution caused by one-time consumption are reduced; and 3, the labor intensity of the medical staff and biochemical staff is reduced; 4, the excessive sweating and weakening and excessive fatigue of the medical staff due to the fact that the medical staff are wrapped by the protective clothing too tightly are avoided; and 5, the situation that the protective glasses excessively cling to the face to form a fog surface due to breathing to thereby influence the sight to cause work delay and even faults, is avoided.

The invention discloses an efficient calibration system for a fuel cell air flow meter and a control method of the efficient calibration system, relates to the field of calibration of the fuel cell air flow meter, and solves the problems that an existing fuel cell air flow meter is subjected to many restricting factors, low in precision and large in error during calibration. The efficient calibration system for the fuel cell air flow meter comprises an air supply module AO, a hydrogen supply module HO, a heat dissipation module WO, a control module UO and a PEMFC1 fuel cell, and the air supply module AO comprises an air filter A5, an air compressor A3, a reverse purging valve A6, an air inlet valve A4, an air outlet valve A2, a bypass valve A2 and a purging release valve A7. The system has the advantages that the closed space formed by the pipeline is used for pressure building in the calibration process, compared with other disclosed methods, calibration operation can be achieved more conveniently, errors caused by proton membrane permeation are restrained, and therefore the calibration coefficient can be calculated more accurately.

The invention discloses a monitor and control device that can be quickly installed, comprising a protective case, the inner wall of the bottom end of the protective case is connected with the main body of the monitoring and control device, the outer walls of both sides of the protective case are symmetrically connected with a connection box, and the inside of the connection box is provided with a fan. , the inner wall on one side of the connection box is provided with a first through hole along its length direction, the first through hole is connected with a dust-proof net, the inner wall on both sides of the protective shell is symmetrically provided with a second through hole, and the second through hole is connected to the connection box The inner cavity is connected, and the side wall of the protective shell is connected with a suction cup. The two sides of the suction cup are symmetrically welded with a fixed plate. The side of the fixed plate away from the protective shell is provided with a long strip groove along its length direction. A first connecting plate is slidably connected, and one end of the first connecting plate protruding from the elongated groove is vertically connected with a second connecting plate. The invention can quickly install the monitoring and control device, greatly reduces the labor intensity and improves the installation efficiency.

The invention discloses a preparation method of an air filtering material. The method comprises the following steps: pretreatment of fiber, preparation of hydrophobic fiber, preparation of modified attapulgite, and preparation and spraying of spraying materials. The method has the advantages that the surface of polyester fiber is modified through an alkaline solution and acrylic ester, the structure of the polyester fiber is destroyed, the cohesive force among the polyester fiber is reduced, and the surface roughness and specific surface area of the polyester fiber are improved, so that the adsorption capacity of the polyester fiber is enhanced, meanwhile the polyester fiber has excellent hydrophobic capacity, the polyester fiber is prevented from absorbing moisture and sticking together,and the filtering capacity of modified polyester fiber is enhanced; the method further combines activated carbon and attapulgite, the characteristic that the adsorption property of activated carbon ishigher than that of attapulgite is utilized, and the situation that a large quantity of activated carbon particles are in contact with one another to form a conducting loop to reduce the electrostatic adsorption capacity of the polyester fiber is further avoided, so that the adsorption capacity to particulate pollutant and peculiar smell in the air by the polyester fiber is improved.

The invention discloses an air purification device for a precision casting preparation workshop, and relates to the technical field of air purification, the air purification device comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a water tank and a filter tank in sequence from left to right, and the top of the water tank is fixedly connected with a dust removal cylinder. According to the air purification device for the precision casting preparation workshop, two second bevel gears are in meshing transmission through a first bevel gear, then a first rotating shaft, a first filter plate, a second rotating shaft and a second filter plate rotate, and the first filter plate and the second filter plate make contact with water at the bottom of the inner wall of a dust removal cylinder in the rotating process; then water in the dust removal cylinder can clean dust attached to the first filter plate and the second filter plate, meanwhile, two first spray heads spray water to flush the first filter plate and the second filter plate, and therefore the first filter plate and the second filter plate are cleaned in time, and the problem that the first filter plate and the second filter plate are blocked by the dust is avoided; therefore, the air filtering effect of the filter plate I and the filter plate II is ensured.