121 results about "Planar filter" patented technology

The invention is the improvement on a longitudinal drainage plate for silt consolidation, filter cloth and a drainage plate core, which is characterized in that fibrous hot-pressed microporous filter cloth is planar filter cloth hot-rolled by a flat roller, the filter cloth is adhered to the surfaces of convex ribs of the drainage plate core through thermal thawing or a chemical way, the filter cloth adopts silk reeling and hot-press forming separation technology, and the drainage plate core is made of co-polypropylene, thereby overcoming the disadvantages of the prior art; and the aperture of the filter cloth can be adjusted according to treated silt, the drainage plate is difficult to block, the engineering on a soft foundation after the treatment cannot have the settlement after the construction and has smooth drainage and high drainage efficiency, and the plate core has long effective service life.

A process for preparing the trigradient high-density planar filter material includes such steps as overlaying the fine fibre mesh, cloth substrate and thick fibre mesh, needling, arranging the superfine fibre mesh on said fine fibre mesh, needling to obtain felt, thermally fixating its shape, singeing, and rolling.

This invention provides lateral flow filters with pore size gradients and with features to prevent peripheral flows around the filter. The filters can be laminated composites of two or more planar filter layers. Cartridges employing the filters can include a filtration chamber configured to retain the lateral flow filters including a port for sample application and a capillary channel for filtrate egress. The fluid egress port can be positioned to receive filtrate from one filter layer but not another.

A voltage-controlled tunable suspended stripline planar filter, comprising a first resonator, the first resonator including at least one tunable capacitor and at least one PIN diode, and a second resonator coupled to the first resonator, the second resonator including at least one tunable capacitor and at least one PIN diode. The tunable filter may further comprising a low-pass section between a coupling line coupling said first and said second resonator and an input port and the first resonator may be coupled to the second resonator through proximity coupling. Further, in one embodiment of the present invention the at least one PIN diode in the first resonator may be two PIN diodes and the at least one tunable capacitor in the first resonator may be two tunable capacitors.

The invention discloses an improved rotary fine screen for filtration of water treatment. The rotary fine screen is characterized in that: a rotary annular filter screen is formed by hinging triangular hopper-shaped porous filter plates, wherein each triangular hopper-shaped porous filter plate has an open edge, and is annularly arranged on a frame in a way that triangular openings are inward; a slag collection and discharge device comprises a slag collection hopper and a lower conveying and slag discharge device, and is arranged in the rotary annular filter screen; and a thickness surface on one side of the screen is closed and a thickness surface on the other side of the screen is open. The filtering area of a single filtering surface at least can be increased by 10 to 20 percent compared with that of a single filtering surface of a planar filter screen; and moreover, two surfaces of the rotary screen have a filtration interception effect, and the filtering area is at least increased by 120 to 140 percent. The filtration mode that sewage flows from inside to outside also ensures that intercepted dirt and filtration effluent are completely separated, so that the intercepted dirt cannot be brought into the downstream of the effluent along with the rotation of the filtering surfaces of the screen. Particularly, the open thickness surface is arranged toward the water flow, so that the filtration flux is not affected by the width of a canal, the rotary fine screen can still be put into the original canal after the width is increased, the dependence on the width of the canal is greatly reduced, and the floor area of the canal is saved; and the rotary fine screen is particularly applicable to the transformation of old sewage treatment plants.

A charged particle analyser (1) comprises a first non-imaging electrostatic lens (8, 9) for receiving charged particles having divergent, trajectories and for converting the said trajectories into substantially parallel trajectories. At least one planar filter (10) is provided for receiving the charged particles having the substantially parallel trajectories and for filtering the charged particles in accordance with their respective energies. A second non-imaging electrostatic lens (11) receives the energy filtered charged particles and selectively modifies their trajectories as a function of their energies. A charged particle detector (12) then receives the charged particles in accordance with their selectively modified trajectories.

The invention relates to the field of dish washing machines and discloses a disintegrating slag self-cleaning and filtering system for a dish washing machine and a dish washing machine. The disintegrating slag self-cleaning and filtering system comprises disintegrating slag filtering components, a water cup with a filtering cavity, a wash pump communicated with the filtering cavity through a pipeline, a drainage structure communicated with the filtering cavity through a pipeline and a flat filter covering the filtering cavity, wherein the disintegrating slag filtering components comprise a column-shaped filter rotationally mounted in the filtering cavity and a disintegrating slag blade tightly mounted in the column-shaped filter; a blowhole used for spraying water toward the column-shaped filter is formed in the water cup; and a self-cleaning spray pipe connected with the blowhole through a pipeline is arranged on the wash pump. According to the disintegrating slag self-cleaning and filtering system and the dish washing machine, water sprayed out from the blowhole flushes away food wastes attached to the disintegrating slag filtering components and drives the disintegrating slag filtering components to perform rotational movement, food waste mixtures and foreign objects in water flow are cut into slag by rotational movement of the disintegrating slag filtering components and then discharged, and further, the self-cleaning effect of the filtering system for the dish washing machine is realized.

A collapsible HVAC filter that includes a pleated filter media pack with ends that attach to ends of a planar filter frame member. The structure collapses by folding the filter frame member along score lines and compressing the pleated filter media while the media and frame member are attached. The collapsed components occupy little space relative to the expanded filter, and can be expanded to form a completed filter with little effort required by the end user. Most of the filter media is collapsed in a generally U-shaped channel formed from the folded filter frame member.

A method and compiler for compiling hierarchical command based policy rules to a flat filter list structure adapted for storage in a Content Addressable Memory (CAM), wherein the policy rules are organized in a tree-structure of classifiers. First, all of the possible search paths in the tree structure are found, and then only the valid search paths according to defined criteria are added to the flat filter list. The CAM may be a Ternary Content Addressed Memory.

The invention is applied to the field of dish-washing machines, and discloses a self-cleaning water flow system of a dish-washing machine and the dish-washing machine. The self-cleaning water flow system comprises a water cup with a filtering cavity and a water inlet cavity, a washing pump with a water suction pipe and a water discharging pipe, a water distribution valve cavity cover covering the water inlet cavity, a planar filter covering the filtering cavity, a cylindrical surface filter arranged in the filtering cavity rotationally and a filtering lifting cup extending into the cylindrical surface filter in a penetrating manner from the planar filter, wherein the water suction pipe is connected with the filtering cavity through a pipeline; the water discharging pipe is connected with the water inlet cavity through a pipeline; the water distribution valve cavity cover comprises a cover body covering the water inlet cavity and a water spraying pipe which is arranged in the filtering cavity in a manner of extending and penetrating from the cover body and is positioned beside the cylindrical surface filter; a plurality of water spraying holes facing to the cylindrical surface filter are formed in the water spraying pipe. According to the self-cleaning water flow system, water is sprayed to the cylindrical surface filter through the water spraying holes, so that the blockage resistance and the filtering capacity of the cylindrical surface filter can be improved, and the washing effect and the self-cleaning effect of the dish-washing machine are enhanced.

Transistor package leads form quarter-wave antenna elements that directly radiate RF energy into free space without the need for a separate antenna. The transistor operates at a fundamental frequency and radiates a harmonic, thereby allowing radiation at frequencies normally considered “beyond cutoff” for a packaged transistor. This technique enables an additional 20 GHz of spectrum for use by surface mount technology. The transistor may be mounted on 1.6 mm thick glass-epoxy circuit board that also forms a quarter-wave reflector at 26 GHz. An optional dielectric lens produces a narrow beam and an optional planar filter rejects spurious fundamental emissions. A 26 GHz ultra-wideband (UWB) pulse-echo radar rangefinder implementation provides a low-cost upgrade to ultrasound.

The invention is applicable to the field of a dish-washing machine, and discloses a dish-washing machine water cup component and a mounting structure of the dish-washing machine water cup component, wherein the dish-washing machine water cup component comprises a water cup main body which has a filtering cavity and a washing cavity, a water inlet spraying pipe which is arranged on the water cup main body and is used for communicating an external water supply device and the filtering cavity, and a diversion water cup connector which is arranged on the water cup main body and is used for communicating a spraying arm device and the washing cavity; the water inlet spraying pipe comprises a spraying pipe main body and a stream guidance component which is arranged inside the spraying pipe main body; and a spiral stream guidance passage, which extends in a spiral mode in the axial direction of the spraying pipe main body, is formed by the stream guidance component inside the spraying pipe main body. The dish-washing machine disclosed by the invention, by adding the stream guidance component inside the spraying pipe main body of the water inlet spraying pipe so as to form the spiral stream guidance passage inside the spraying pipe main body, can generate an effect of spraying water in a rotatable mode, so that a water flow is jetted on a micro-filter, a flat filter and the inner side face of the filtering cavity, so that a function of cleaning the inner side face of the filtering cavity, the micro-filter and the flat filter is achieved.

The invention relates to a filtration system of a dish-washing machine. The filtration system comprises a plane filter, a cylindrical surface filter, a circulating filter, a water glass, a washing motor arranged at the outer side of the water glass and a drainage pump, wherein the plane filter and the circulating filter are respectively fixed on the upper end of the water glass; the cylindrical surface filter is fixed on the plane filter; the water glass is internally provided with a slag disintegrating cavity and a circling filtration pump cavity; the slag disintegrating cavity is communicated with an opening at the lower end of the cylindrical surface filter and a drainage pump cavity of the drainage pump; the slag disintegrating cavity is also internally provided with a slag disintegrating blade which is arranged on an output shaft of the washing motor and disintegrates food slag; the circling filtration pump cavity is communicated with the slag disintegrating cavity; a filtering net is arranged on a water inlet of the circling filtration pump cavity; the circling filtration pump cavity is internally provided with a circulating filtration pump arranged on the output shaft of the washing motor; the circling filtration pump cavity is communicated with a circulating filtration cavity of the circulating filter; and the circulating filtration cavity is communicated with the drainage pump cavity provided with the drainage pump. The filtration system can guarantee food slag not to be adhered to the filtering net, greatly promotes filtering effect and the self-cleaning capability of the whole filtering system, reduces energy and water consumption of the dish-washing machine, and increases the clearing rate of the dish washing machine.

There is disclosed a planar filter which can variably control a pass frequency band with a high precision and which is superior in skirt property and little in ripple. A planar filter member and tuning member are disposed opposite to each other via a predetermined gap. The filter member is structured in such a manner that an input/output portion formed of a superconductor and a plurality of resonance elements are formed on a substrate. The tuning member is structured in such a manner that on the surface of a magnetic plate with a permeability changing by an applied magnetic field, a plurality of dielectric thin films, and a plurality of electrodes for applying electric fields to the dielectric thin films are arranged. Each of the dielectric thin films is disposed in a position opposite to a gap between the resonance elements of the filter member, or a gap between the filter member and the input/output portion. By applying a voltage between the electrodes, an effective permittivity is in of the gap between the resonance elements, or the gap between the resonance element and the input/output portion is variably controlled, and the skirt property and ripple are adjusted. Moreover, a resonance frequency of the resonance elements, a coupling between the resonance elements, and a coupling between the resonance element and the input/output portion may be individually and independently controlled.

A cartridge element and a dust collector is provided that can achieve a decrease in the size of a dust collector using a cartridge element, can effectively disperse dust, can be easily used, and has a simple structure.

The cartridge element is a plate-type element and comprises a planate filter 1 composed of a cylindrically-formed pleated filter medium, a cap 2 that maintains the pleats and the opening of it in a planate shape, an upper-end member 3, and a reinforcing material 4 that is made by pipes or a round bar that is made by resin.

The invention discloses a device and a method for testing the water permeability of a planar filter medium for liquid and solid separation. The device mainly comprises a support baseplate, a baseplate support leg, a support pole, a water outlet, a lower connecting flange, a sealing ring, a supporting screen, a filtering element mounting plate, a fastening clamp, an upper connecting flange, a barrel, a water inlet, a water inlet sealing socket, an exhausting and pressurizing port, an incoming water distribution plate, an overflow port positioning rod, an overflow water outlet ring, an overflow outlet pipe, an overflow port sealing socket, an overflow adjusting pipe, an overflow port elbow, a liquid level meter and the like. Due to the adoption of the test device and the method of the invention, the water permeability of the planar filter medium can be tested correctly and rapidly under a vacuum or pressurized condition and basis for scientific evaluation, selection and use of the filter medium is provided.

The invention discloses a water circulation reusing device of a dish washing machine. The water circulation reusing device comprises the dish washing machine and is characterized in that a water tank for collecting water flow is arranged at the bottom of the dish washing machine and respectively connected with a water storage tube and a discharging tube; a water storage tank is arranged on one side of the dish washing machine and respectively connected with the dish washing machine and the water storage tube; because the water storage tank plays a storage role to the water flow, the water flow in the dish washing machine can realize cycling and reuse through the water storage tank. The water storage tank is arranged on one side of the dish washing machine, the water flow in the dish washing machine can be filtrated through a plane filter and a micro filter, thus the filtrated water flow can flow into the water storage tank, when the dish washing machine washes, the water flow is supplied and reused, the actual water inflow can be greatly reduced in the whole washing process, water resources are saved, and the purpose of energy conservation and emission reduction is achieved. Meanwhile the water circulation reusing device has the characteristics of simple and reasonable structure, convenient and quick installation, low cost, good effect and strong practicality.

A bandpass filter includes a combination of a BAW filter and a patterned planar filter with stubs. The BAW filter is composed of a plurality of piezoelectric resonators to give a specific frequency bandpass, while the planer filter is configured to attenuate frequencies near and outside the bandpass. The resonators are connected in a ladder configuration between a first signal transmission path and a ground. The planar filter includes a strip line formed on a dielectric layer to define a second signal transmission path. The BAW filter and the planar filter are formed on a common substrate with the first and second transmission paths connected to each other. The BAW filter, in combination with the patterned planar filter added with the stub, can improve a deep near-band rejection inherent to the BAW filter, exhibiting an excellent out-of-band rejection over certain adjacent frequency ranges outside of the bandpass, and therefore give a sharp and wide bandpass.

An adjustable radiofrequency filter in planar technology comprises at least one dielectric substrate and n resonators R1, R2, . . . Ri, . . . Rj, . . . Rk, . . . Rn integrated into the substrate, and each resonator comprises, on a principal plane PL of the substrate, a succession of segments t1, t2, . . . tq, . . . tp of planar transmission lines each having two ends, p being the number of segments of planar transmission lines of the resonator Ri considered, p being equal to or greater than 2, q being the rank of the segment, an end of a segment tq of a resonator Ri being opposite and separated by a distance d from an end of the next segment t(q+1) of the same resonator Ri, the opposite ends of the successive segments of a resonator Rq being linked by an electrical link which locally raises the characteristic impedance of the resonator Ri considered.

The invention provides a bowl washing machine and a filtering system thereof. The bowl washing machine comprises a water collecting cup and a washing pump, and the washing pump is used for pumping water out of the water collecting cup. The filtering system comprises a planar filtering part and a cylindrical filtering part, wherein the planar filtering part is arranged above the water collecting cup, the cylinder filtering part is cylindrical and can be rotatably arranged in the water collecting cup, and when the washing pump pumps water, the cylindrical filtering part rotates. According to thefiltering system, the cylindrical filtering part can be self-cleaned, and the filtering effect is guaranteed.

A planar lightwave circuit and an optical receiver which reduce degradation in signal quality is provided.

A planar lightwave circuit includes: a substrate with a straight groove formed therein; a signal light input port which is formed in the substrate and receives signal light; a first planar filter part which is fitted into the groove and separates the signal light into a signal light component including a first polarization state and that including a second polarization state; a second planar filter part which is fitted into the groove and separates the local oscillator light into a local oscillator light component including the first polarization state and that including the second polarization state; a first interference part formed in the substrate; a second interference part which is formed on a side of the substrate opposite to the side of the first interference part across the groove; a first waveguide which is connected to the signal light input port and also to a reflection surface of the first planar filter part; a second and a third waveguide; a fourth waveguide which is connected to the local oscillator light input port and also to a reflection surface of the second planar filter part; and a fifth and a sixth waveguide.

The invention discloses a filter screen of a range hood. The filter screen is characterized by comprising a plurality of ventilation surfaces which are arranged side by side from left to right, wherein each ventilation surface is a concave surface with high left and right sides and a low middle part; a plurality of meshes are formed in the two side surfaces of each ventilation surface; the concave part in the middle of each ventilation surface forms a drainage trough; the concave depth of each ventilation surface is gradually increased from the front end to the back end. The filter screen is provided with the plurality of ventilation surfaces with the high two sides and the low middle part side by side and the meshes are formed in inclined planes of the ventilation surfaces, so that the filter screen has a larger area for oil fume to pass through compared with a planar filter screen, and the exhaust efficiency is improved; besides, the oil fume can collide with the side surfaces of the ventilation surfaces for a plurality of times when passing through the filter screen, so that grease can be easily condensed on the ventilation surfaces and flow into an oil cup along the drainage troughs; moreover, because the oil fume collides with the filter screen for a plurality of times, the oil fume flow can be scattered, and then the rectifying effect of the oil fume passing through the filter screen is improved.