33results about How to "Improve filtering effect" patented technology

The invention belongs to the technical field of air pollution prevention and control, particularly relates to air pollution prevention and control equipment, aiming at the problems that most of existing air pollution prevention and control equipment is fixedly arranged and only can carry out pollution treatment on one position, is inconvenient to move, inconveniently filters polluted air and is inconvenient to use. The equipment includes a bottom plate, wherein the top of the bottom plate is fixedly connected with a gas detector, the bottom of the bottom plate is fixedly connected with four universal wheels, the top of the bottom plate is fixedly connected with a fixed box, the top of the fixed box is fixedly connected with a stand column, the top of the stand column is rotatably connected with a rotating column, and the top end of the rotating column is fixedly connected with a gas suction cylinder; the outer side of the rotating column is fixedly sleeved with a fixed gear, and the top of the bottom plate is rotationally connected with a vertical shaft wheel. The equipment is simple in structure and convenient to operate and move, air pollution control can be carried out on different areas, and air pollution control can be well carried out.

The invention relates to a gas purifier which can purify air and prevent blockage caused by particles or impurities. The gas purifier comprises a closed housing, wherein a hollow shaft is in running fit with the interior of the housing, and a plurality of filter cylinders with the left ends closed and openings in the right ends fixedly sleeve the hollow shaft; a plurality of spout holes are formed in the wall of the hollow shaft, and one end part of the hollow shaft is used for water intake, so that all the spout holes can spray water to the inner walls of the filter cylinders; the hollow shaft is in transmission fit with a transmission mechanism to enable the filter cylinders to rotate; the opening part of each filter cylinder and the inner wall of the housing are in rotary sealing fit through a sealing mechanism; a gas inlet used for inputting a gas to be purified is formed in the wall of the housing and located at the left side of the sealing mechanism in sealing fit with the filter cylinder on the leftmost side, and a gas outlet is formed in the wall of the housing and located at the right side of the sealing mechanism in sealing fit with the filter cylinder on the rightmost side.

A common mode choke coil comprises: a Mn—Zn ferrite core which is shaped square, forms a closed magnetic path, and which has an initial permeability of at least 3,000 at 100 kHz and at least 100 at 10 MHz, respectively, at room temperature; and first and second edgewise windings which are formed respectively of first and second rectangular insulated wires. The first edgewise winding is provided around a core leg of the Mn—Zn ferrite core, and the second edgewise winding is provided around a core leg of the Mn—Zn ferrite core located oppositely to the core leg having the first edgewise winding provided therearound. This structure enables the core characteristics to be fully utilized without an influence of stray capacity of winding.

The invention relates to a centrifugal pulp screening machine with high pulp screening efficiency. The centrifugal pulp screening machine comprises a main body, a discharging pipe and four supports; the discharging pipe is arranged on one side of the main body, and the supports are uniformly arranged at the bottom end of the main body; a control mechanism is arranged in the main body, and a feeding mechanism is arranged at the top end of the main body; the control mechanism comprises a driving assembly, a control assembly and an auxiliary assembly; the driving assembly comprises a driving motor, a driving wheel, a driven wheel, a driving belt, a transmission shaft, a rotating disc, a fixing plate, a sleeve, blades and at least two screens; the feeding mechanism comprises a detection assembly and two feeding assemblies; and the detection assembly comprises a connecting box, a lifting rod, a connecting plate and a floating ball. According to the centrifugal pulp screening machine with the high pulp screening efficiency, the screening efficiency is improved through the control mechanism, in addition, the function of full-load operation is achieved through the feeding mechanism.

The invention relates to the related technical field of weeding machines, in particular to a handheld weeding machine and a protection structure thereof. The handheld weeding machine comprises a mounting plate, a diesel engine and the protection structure that are arranged on the mounting plate; a mounting seat is fixedly mounted on the rear side of the mounting plate. The invention further discloses a protection structure of the handheld weeding machine. The filter box on the mounting plate comprises a filter box body, a first upper partition plate, a first lower partition plate, a second lower partition plate, a second upper partition plate, a third lower partition plate and a third upper partition plate; the handheld weeding machine is formed by combining a mounting plate, a diesel engine, a mowing cutter head and a protection structure; the protection structure is formed by combining a filter box body, a first upper partition plate, a first lower partition plate, a second lower partition plate, a second upper partition plate, a third lower partition plate and a third upper partition plate; therefore, the smoke generated when the handheld weeding machine works is filtered through the protection structure, so that the harm to the body of an operator caused by the smoke is avoided.

A hard disk drive is disclosed including at least one air filter mounted on a shroud wall of the base and at least two disk dampers where at least one disk damper covers a fraction of the maximal covering angle configured with the air filter to optimize both the air filter and disk dampening. Methods of manufacturing the hard disk drive are also disclosed.

The invention discloses a multi-column-box chromatographic instrument in the technical field of multi-column-box chromatographic instruments. The multi-column-box chromatographic instrument comprises a box body, a fixing frame is arranged on one side face of the box body, an air draft fan is arranged in the fixing frame, a filter plate is arranged on one side of the air draft fan, and a cleaning mechanism is arranged on one side face of the filter plate; the cleaning mechanism comprises a connecting plate, a fixing plate and a sealing plate, protruding blocks are fixedly connected to the two side faces of the connecting plate, the connecting plate is fixedly connected with the fixing frame through the protruding blocks, a plurality of fixing rods are fixedly connected to the lower end face of the connecting plate, and the fixing rods are sequentially fixed from top to bottom. A brush is fixedly connected to one side face of the fixing plate and makes contact with the filter plate, the sealing plate is located on the lower end face of the fixing frame, and one side of the sealing plate is hinged to the fixing frame, so that the air filtering effect can be greatly improved, the influence of impurities on air detection is avoided, and the detection efficiency is improved while the position of the box body is conveniently adjusted. And the position of the box body can be conveniently limited, and the use efficiency of the device is greatly improved.

The invention relates to a carbon fiber air filtration sterilizer comprising an outer box body, an air inlet, a fresh air outlet, an induced draft fan, a filtration sterilization device and a power connecting line arranged on the outer box body; the power connecting line is connected with a power supply; the carbon fiber air filtration sterilizer is characterized in that a first air inlet box, a second filtration sterilization box as the filtration sterilization device and a third air purification exhaust box are arranged in the outer box body from bottom to top; and the fresh outlet is arranged at the upper part of a front panel of the outer box body 1, and a control panel is further arranged on the front panel of the outer box body. The carbon fiber air filtration sterilizer has the advantages that an electrostatic generator and two carbon fiber far-infrared heating plates are adopted for air purification and sterilization filter cores in the second filtration sterilization box, andflowing air is in contact with activated carbon under the action of the electrostatic generator fully; and thus, not only are the effects of air sterilization and purification achieved, but also the purposes of indoor filtration and sterilization are achieved.

The invention provides a filtering method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring original data acquired by a sensor; processing the original data based on multiple groups of different filtering parameters to obtain corresponding multiple groups of processed data; for the processed data corresponding to each group of different filtering parameters, determining stability information of the processed data; and determining a target filtering parameter and corresponding filtering result data according to the stability information of the processed data corresponding to each group of filtering parameters. The method comprises the following steps: presetting multiple groups of different filtering parameters, corresponding to different working environments, processing original data by using the multiple groups of different filtering parameters after the sensor collects the original data, determining and comparing the stability information of the processed data, and comparing actual filtering effects based on the different filtering parameters. And a target filtering parameter is selected as a final filtering scheme, so that the stability of the sensor is improved.

The invention discloses a water sample pretreatment filtering device for an environmental monitoring laboratory, the water sample pretreatment filtering device structurally comprises a water storage tank, a water pump, a water pumping pipe, a filtering device and supporting legs, the upper end of the water storage tank and the right lower end of the water pumping pipe are fixedly mounted in an embedded manner and are communicated with each other, the water pump is mounted at the right lower end of the water pumping pipe, and a magnetic rod magnetically adsorbs ferromagnetic impurities in a water sample; the water sample presses down the top plate under the action of gravity, and the top spring applies reverse elastic force to the top plate, so that the water sample flows back and is ejected upwards, and the effect of removing the ferromagnetic impurities in the water sample is improved; in the swinging process of the outer frame, sliding shafts at the left outer side end and the right outer side end of the outer frame perform arc-shaped guiding swinging in sliding grooves, springs apply repeated elastic force to the sliding shafts, two filtering plates in the outer frame perform ejection filtering on a water sample flowing downwards, and the filtering effect of the filtering plates on other impurities in the water sample is improved; meanwhile, impurities are prevented from being blocked in filter holes of the filter plate.

In order to solve the problem that industrial sewage is difficult to purify and treat, the invention discloses an environment-friendly industrial reusable sewage treatment device. The device comprisesa rotary drum, a support plate and a mounting plate, stirring rods are uniformly welded on the surface of the rotary drum, a third motor is mounted on the right side of the rotary drum, a first sliding block is fixedly installed on the right side of the third motor, a second sliding block is connected to the left end of the rotary drum, a first guide frame is sleeved with the first sliding block,a second spiral spring is fixedly connected to the lower end of the first sliding block, a first bottom plate is welded to the lower end of the first guide frame, a second guide frame is sleeved withthe second sliding block; a third spiral spring is fixedly connected to the lower end of the second sliding block, and a second bottom plate is welded to the lower end of the second guide frame. Theindustrial sewage treatment device is mounted in a riverway, the purification effect on industrial sewage is improved by utilizing silt in the riverway, preliminary purification of the industrial sewage is realized, sewage reutilization is realized, and the problem of water resource shortage is solved.