57results about How to "Implement collection processing" patented technology

The invention discloses a pipeline robot with a garbage smashing and collecting function. Video image information in a pipeline is captured through an information collecting device arranged in front, and transmitted to a master controller in time, the master controller controls wheel stepping motors to drive a wheel type motor vehicle to move according to actual needs, a rotary stepping motor, transmission stepping motors and a section stepping motor are combined to control a mechanical arm to grab garbage and sundries, meanwhile, low-speed stepping motors and a high-speed stepping motor of a smashing machine are controlled to work, and the function of removing and smashing the garbage in the pipeline is achieved. The stepping motors are adopted to drive all the assemblies, control is convenient, smashing mechanisms are combined with the mechanical arm and the like, and garbage collection and treatment integration is achieved.

Methods for accurately assessing the condition of a petroleum reservoir and designing and implementing a plan of action to increase production and recovery of petroleum from the reservoir. Information is gathered using a unique set of metrics and information gathering techniques and analyzed in a targeted fashion by properly weighting the data in the context of the particular reservoir and goals of the producer. A reservoir rating is generated using asymmetric analysis of metrics and then used to formulate a plan of action. Production architecture (e.g., number, location and manner of constructing oil and injector wells) is then constructed according to the plan of action. Reservoir performance can be continuously monitored and used to verify production and recovery goals and / or provide triggers or alarms to alter production equipment.

The invention discloses an air conditioner indoor unit, a control method and a control device, and belongs to the field of air conditioners. The air conditioner indoor unit comprises a cover shell, across flow fan is arranged in the cover shell, and the air conditioner indoor unit further comprises a sweeping brush which is arranged on one side of the cross flow fan in the length extension direction of the cross flow fan, and a first driving mechanism which is used for driving the sweeping brush to rotate from the first direction to the second direction to enable bristles of the sweeping brush to be in contact with fan blades of the cross flow fan in the second direction. According to the air conditioner indoor unit, the control method and the control device, the first driving mechanism is controlled to drive the sweeping brush to rotate to the second direction to enable the sweeping brush to be in contact with the fan blades of the cross flow fan, so that when the cross flow fan rotates, the fan blades are sequentially swept from the bristles of the sweeping brush, then dust falls off and is collected by a dust collecting structure, so that self-cleaning of the cross flow fan andcollection and treatment of the dust are achieved; and the first driving mechanism is controlled to drive the sweeping brush to rotate to the first direction, the cross flow fan and other componentsare prevented from being touched, the occupation of the internal space of the air conditioner indoor unit is reduced, and the space waste is avoided.

The invention discloses a fallen leaf collecting and treating device, and belongs to the field of fallen leaf sweeping tools. The device comprises a body frame, a secondary crushing structure, a secondary wind power leaf absorption structure, an inclined channel, a suction fan a, a suction fan b, a primary leaf absorption structure and two sweeping structures, driving motors of the sweeping structures are mounted on two sides of the front end of the body frame, the primary leaf absorption structure is mounted in the middles of the two sweeping structures and mounted at the front end of the body bottom plate, the rear end of the primary leaf absorption structure is connected with the suction fan a and the suction fan b, the other end of the suction fan a and the other end of the suction fanb are connected with the one end of the inclined channel, the inclined channel formed in a 45-degree inclined plane of the front side of a fallen leaf collecting box, the other end of the inclined channel is connected with one end of the secondary wind power leaf absorption structure, the other end of the secondary wind power leaf absorption structure is connected with the secondary crushing structure, and the secondary crushing structure is mounted at an opening in the top surface of the fallen leaf collecting box. According to the device, the fallen leaves are collected and treated, and cleaning and environmental protection can be ensured.

The invention discloses a thermal enzyme fast processor capable of positioning remote automatic control. The thermal enzyme fast processor comprises an organic solid waste on-site processing system, a remote monitoring center and a mobile terminal. The organic solid waste on-site processing system comprises a thermal enzyme fast processor with GPRS positioning, a parameter sensor, a password braking device, a PLC controller with built-in Ethernet and a 3G industrial intelligent gateway. The remote monitoring center receives a data signal sent by the PLC controller, and sends an operation instruction after the data signal is processed. The mobile terminal comprises a port which can log in the remote monitoring center. According to the invention, a remote intelligent control technology is introduced; the working parameters of a thermal enzyme reactor can be remotely and timely recorded; the start-up of the thermal enzyme reactor and a key can be remotely controlled; different organic solid waste production processes can be processed at the same time; and quality control is carried out.

The invention relates to a forest fallen leaf cleaning vehicle, belongs to the field of environmental protection devices, and particularly relates to a device which picks up fallen leaves by the aid of hooked needles, collects and treats the picked up fallen leaves. The cleaning vehicle has the advantages that fallen leaves in a forest can be collected and treated, manual sweeping by traditionaltools is omitted, a plurality of hooked needles are arranged on a front rotating shaft, an unidirectional cleaning range is wider, the cleaning vehicle is provided with two groups of hooked needles, so that the fallen leaves are thoroughly cleaned, missing of fallen leaf cleaning is avoided, the fallen leaves are picked up by the hooked needles, burden of bend down picking up of workers is reduced, barbs are arranged on the hooked needles, the fallen leaved stuck on the ground can be picked up and cannot slide out, the fallen leaves on the hooked needles are more conveniently and rapidly takendown by the aid of a front scraper and a rear scraper, fallen leaf taking frequency of the front scraper and positions of the hooked needles are coordinated by bumps, and a storage box suffered fromjolting does not easily slip by the aid of a rear inclined bump of a frame.

The invention relates to a sampling device, in particular to urine sampling equipment. The equipment comprises a shell, a sampling piece and a supporting device; an inlet groove is formed in the top of the shell, a mounting groove is formed in the surface of the shell, the groove bottom of the mounting groove extends towards the interior of the shell, and a channel is formed in the groove bottom of the inlet groove, and communicated with the groove face, close to the top of the shell, of the mounting groove; a first pipe port is detachably connected with the channel, and a third pipe port is located between the first pipe port and a second pipe port; an abandoning box is detachably mounted at the top of the supporting device, a through hole is formed in the bottom of the abandoning box, and a mounting hole communicated with a cavity is formed in the top of the abandoning box, and detachably connected with the second pipe port; a floating ball is placed in the cavity; an opening is formed in the top of a collecting box, and detachably connected with the third pipe port; the supporting device is mounted on the groove surface of the mounting groove. The urine sampling equipment aims at solving the problems that when people are subjected to a routine urine examination, midstream urine is not easily obtained, and during urine collecting, urine easily splashes are solved.

The invention provides a sea surface oil stain collection and recovery integrated device. The whole device is crescent, and achieves an effect of an oil surrounding fence to surround the sea surface oil stains from the end part; a mixture collecting port is formed in a crescent cabin body; oil-water mixtures are quickly absorbed in the device through an electric pump in the mixture collecting port; through a separation effect of a centrifuge, the oil stains are collected into an oil tank by an oil pipeline at the upper part of the device, and water is leaded out by a water pipeline at the lower part; and after multi-layer filtration, clean seawater is directly drained into the sea.

The invention discloses a novel intelligent laser cutting machine, which includes a machine tool body. The feeding end of the machine tool body is provided with a driving roller, both sides of the machine tool body in the length direction are internally and slidably provided with lifting type protective isolation plates correspondingly, the machine tool body is internally provided with a driving mechanism which drives the lifting type protective isolation plates to slide up and down, and infrared ray alarms connected with driving mechanism circuit signals are fixedly arranged on both sides, near the driving roller, of the machine tool body in the length direction correspondingly; and the infrared ray alarms are vertically arranged with the side wall of the machine tool body, mirror face refracting plates are fixedly arranged on both sides, near the infrared ray alarms, of the machine tool body correspondingly, the mirror face refracting plates are obliquely arranged at 45 degrees, andinfrared ray receiving plates are vertically fixedly arranged on both sides, away from the driving roller, of the machine tool body correspondingly. According to the novel intelligent laser cutting machine, the condition that apprentice inadvertently closes to observe laser cutting head work can be effectively avoided, and safety is improved.

The invention provides a collection method and an electronic device for displaying pages. The method comprises the following steps: receiving a preset bending operation for a target area of the flexible screen; performing collectible processing on a current display page of the flexible screen in response to the preset bending operation; by detecting and responding to the preset bending operation of the target area of the flexible screen, the embodiment of the invention can realize the collection processing of the current display page of the flexible screen, avoid the operation of clicking on the flexible screen, continue the experience of paper reading, and improve the ease of learning and the user experience.

The invention discloses an odor removal ventilation system inside a pig house. The system comprises a pig house bottom odor removal ventilation subsystem and a pig house upper odor removal ventilationsubsystem. The pig house bottom odor removal ventilation subsystem comprises a ceiling air inlet component, an excrement ditch, an air flue system and an odor removal tower; the pig house upper odorremoval ventilation subsystem comprises a wet curtain arranged at one side wall of the pig house longitudinal section, a gable axial flow fan arranged at the other side wall of the longitudinal section, and an odor removal spraying wall outside the gable axial flow fan; the pig house bottom odor removal ventilation subsystem and the pig house upper odor removal ventilation subsystem are used according different seasons, the pig house bottom odor removal ventilation subsystem is used in winter, and the pig house bottom odor removal ventilation subsystem and the pig house upper odor removal ventilation subsystem are used in summer.

The invention belongs to the field of computer accessories processing technology, in particular, a dust cleaning device for computer accessories processing, including a base, the top of the base is fixedly installed with a support column and a sphere, and the top of the support column is installed with an open top. A dust-cleaning box, one side of the inner wall of the dust-cleaning box is rotatably installed with a horizontal horizontal shaft, one end of the horizontal shaft is fixedly mounted with a vertical positioning plate, and one side of the positioning plate is slidingly mounted with two A clamping block, the top of the cleaning box is fixedly equipped with a vertical bar, and the top of the vertical bar is fixedly installed with a horizontal plate that is horizontally arranged, and the track plate that is vertically arranged is slidably installed on the horizontal plate, and the track plate is installed vertically. One side is slidingly installed with a vertical lifting rod; the invention realizes large-area dust cleaning of accessories, greatly improves efficiency, uniform dust removal, good dust removal effect, and realizes dust collection and treatment during the dust removal process, avoiding Dust pollutes the environment and improves the quality of use.

The invention discloses a hot-pressing waste gas collection and treatment device which comprises a rack, first waste gas collection mechanisms, a hot-pressing mechanism, second waste gas collection mechanisms and a filtering tower. The rack bears the first waste gas collection mechanisms, the second waste gas collection mechanisms and the hot pressing mechanism. The first waste gas collection mechanisms are fixed to the two sides of the rack. The second waste gas collecting mechanisms are fixed at two ends of the rack; the hot-pressing mechanism is fixed in the rack and surrounded by the firstwaste gas collecting mechanisms and the second waste gas collecting mechanisms; a top plate is arranged at the top of the rack, and a base is arranged at the bottom of the rack; an oil cylinder is arranged on the base; the oil cylinder top shaft is connected with the hot-pressing mechanism. On the premise that the hot-pressing production efficiency is not affected, the waste gas collection and treatment efficiency can be greatly improved.

The invention relates to the field of asphalt processing, in particular to a smoke suppression asphalt mixing device which comprises a box and a stirring shaft rotatably connected to the box and further comprises a piston barrel, a piston is slidably connected into the piston barrel, a spring is connected between the inner wall of the piston barrel and the piston, a piston rod is fixedly connected to the piston, and a piston plate is connected to the piston rod. An air channel is arranged between the piston barrel and the box, a first one-way valve used for enabling air in the box to flow into the piston barrel in a one-way mode is arranged on the air channel, an air outlet is formed in the piston barrel, a second one-way valve used for enabling the air in the piston barrel to flow out in a one-way mode is arranged on the air outlet, and an air collecting piece is connected to the air outlet; and a protruding piece is fixedly arranged on the portion, located on the outer side of the box, of the stirring shaft and intermittently abuts against the piston plate. According to the scheme, waste gas generated in the mixing process is collected.

The invention discloses a collection treatment method and device for fugitive emission particulate matters. The method comprises steps as follows: a group of balloons are provided and filled with gas with the density smaller than that of air; a group of hoses are provided, and through holes are distributed in walls of the hoses; one end of each hose is floated by means of the balloons, so that the group of hoses are distributed in a to-be-treated area with the fugitive emission particulate matters; at least one dust removal device provided with a fan is provided, and the other end of each hose is connected to an air inlet of the dust removal device through a main gas inlet pipe; the particulate matters in the to-be-treated area are sucked into the hoses through the through holes in the walls of the hoses under the action of suction force of the fan in the dust removal device, the particulate matters enter the dust removal device through the gas inlet pipe, and the fugitive emission particulate matters are collected. The method and device are suitable for pollution treatment in various fugitive emission occasions, the system structure is simple, the cost is low, and the movability is good.

The invention belongs to the technical field of computer accessory processing, and particularly relates to a dust removal device for computer accessory processing. The device comprises a base, wherein a support column and a ball are fixedly mounted on the top of the base, a dust removal box with an open top is mounted at the top of the support column, and a horizontal transverse shaft is rotatably mounted on the inner wall of one side of the dust removal box. A vertical positioning plate is fixedly mounted at one end of the transverse shaft, two clamping blocks are slidably mounted on one side of the positioning plate, a vertical rod is fixedly mounted on the top of the ash removal box, a horizontal plate is fixedly mounted on the top of the vertical rod, and a vertical track plate is slidably mounted on the horizontal plate. A vertically arranged lifting rod is mounted on one side of the track plate in a sliding mode. The device removes ash of an accessory in a large area, so that the efficiency is improved greatly, and the device is uniform to remove ash and good in ash removal effect, collects and processes dust in the ash removal process, prevents dust from polluting an environment, and improves the using quality.

The invention belongs to the field of ceramic glaze spraying, and particularly relates to a ceramic glaze spraying device with a dust collection function, which comprises an upper partition plate, a lower partition plate and an annular side plate rotationally arranged between the upper partition plate and the lower partition plate, and further comprises a power part for driving the annular side plate to rotate, the upper partition plate is provided with a glaze spraying assembly, the lower partition plate is provided with a mounting opening used for mounting ceramics, the glaze spraying assembly comprises a spray head and an annular driving part used for driving the spray head to rotate around the mounting opening, and the exhaust channel always corresponds to the spray head in direction. The exhaust channel corresponding to the direction of the glaze spraying nozzle is arranged on the annular side plate in an extending mode, dust collection treatment in the glaze spraying process is achieved, the exhaust channel always corresponds to the direction of the nozzle, it is guaranteed that the flow direction of sprayed atomized glaze slip in the glaze spraying process is accurate, and glaze spraying is more uniform.

The invention discloses a filtering device for high-pressure jet descaling and a using method thereof.The filtering device comprises a treatment box, an impurity filtering net is arranged in the treatment box, a slag outlet is formed in the impurity filtering net, the top of the impurity filtering net is rotationally connected with an impurity scraping plate matched with the slag outlet, a rotating mechanism is arranged in the treatment box and connected with the impurity scraping plate, and the impurity scraping plate is connected with the slag outlet; a rotating mechanism is arranged in the treatment box, a reset mechanism is arranged in the treatment box and connected with the rotating mechanism, and a discharging box matched with the slag outlet is slidably connected to the interior of the treatment box. The rotating rod drives the impurity scraping plate to rotate and treats impurities on the impurity filtering net, the discharging box is additionally arranged, so that the scraped impurities are collected, and the drying mechanism is additionally arranged, so that the collected impurities are fully dried.

The invention relates to the related field of sanitary equipment, and in particular to a household anti-blocking floor drain. The household anti-blocking floor drain comprises a wall body and a waterinlet with an upward opening formed in the wall body. A baffle used for blocking large stains is fixedly arranged at an opening of the water inlet. A sliding cavity which is positioned on the lower side of the water inlet and is communicated with the water inlet is formed in the wall body. A crushing cavity located on the lower side of the sliding cavity is formed in the wall body. A collecting device extending into the crushing cavity is arranged in the sliding cavity. According to the household anti-blocking floor drain, sweeps in waste water dumped by people can be collected and treated. After excessive sweeps are generated, the sweeps are treated, and the sweeps are mixed with water flow to be discharged. The situation that the sweeps are accumulated in pipelines, and normal use of people is affected is avoided, and the equipment can be applied to multiple places at home and has certain universality, so that all the pipelines can be guaranteed to keep communicated.

The invention relates to the technical field of underwear processing equipment, in particular to an underwear edge trimmer with a waste collecting structure and a using method of the underwear edge trimmer. The underwear edge trimmer comprises an underwear ultrasonic edge trimmer body; the underwear ultrasonic edge trimmer body comprises a supporting frame; a storage barrel and a collecting assembly are arranged behind the supporting frame; the collecting assembly is arranged in an operation table; the collecting assembly comprises a conveying belt; a flow guide plate is arranged below the conveying belt; a conveying roller is arranged on the front face of the conveying belt; a first pressing roller is arranged above the conveying roller; and a second pressing roller is arranged on the right side of the first pressing roller. Waste obtained after internal cutting and fusion cutting can be effectively collected and treated, and progressive transferring and collecting of the waste are achieved after edge trimming is conducted every time, so that the situation that the waste is accumulated above the operation table is reduced; and meanwhile, linear guiding fusion cutting treatment can be achieved when the underwear edge trimmer is disassembled for use, and therefore the using effect of the underwear edge trimmer is improved.

The invention discloses a thermal enzyme fast processor capable of positioning remote automatic control. The thermal enzyme fast processor comprises an organic solid waste on-site processing system, a remote monitoring center and a mobile terminal. The organic solid waste on-site processing system comprises a thermal enzyme fast processor with GPRS positioning, a parameter sensor, a password braking device, a PLC controller with built-in Ethernet and a 3G industrial intelligent gateway. The remote monitoring center receives a data signal sent by the PLC controller, and sends an operation instruction after the data signal is processed. The mobile terminal comprises a port which can log in the remote monitoring center. According to the invention, a remote intelligent control technology is introduced; the working parameters of a thermal enzyme reactor can be remotely and timely recorded; the start-up of the thermal enzyme reactor and a key can be remotely controlled; different organic solid waste production processes can be processed at the same time; and quality control is carried out.

The invention relates to a drying, condensation and dehumidification integrated machine. The drying, condensation and dehumidification integrated machine comprises a drying box with a front doorway onthe front, wherein a front door is arranged on the front doorway; a material truck is arranged in the drying box; a condensation and dehumidification device is arranged on the side of the drying box,and comprises an outer cover which is in tight connection with the drying box; a side doorway is arranged on the outer cover; a side door is arranged on the side doorway; a horizontal dehumidifier isarranged in the middle of the inner cavity of the outer cover; an air guide component is arranged above the dehumidifier and at an exhaust port of the side wall of the drying box; a circulating fan is arranged below the dehumidifier and at an air return port of the side wall of the drying box; a water collecting tank is arranged at the bottom of the inner cavity of the outer cover; a drainage pipe is arranged at the bottom of the water collecting tank; and a heating device for heating the interior of a box body and a cooling device for cooling the dehumidifier are also arranged in the dryingbox. The drying, condensation and dehumidification integrated machine is reasonable in structural design and realizes the online condensation and dehumidification of moisture and the condensation andliquefaction collection of moisture.

The invention discloses an environment treatment highway leaf automatic collection garbage vehicle. A movable leaf collection box is arranged on the end portion of a vehicle body. Each of the two sides of the leaf collection box is provided with a rotary collection roller. Each collection roller is provided with a circle of a spirally-arranged rotary belt. Each rotary belt is provided with a circle of collection insertion needles. Each of the two sides of the leaf collection box is provided with a roller baffle corresponding to the collection roller. Each roller baffle is provided with a leafconveying groove corresponding to the collection roller. Each leaf conveying groove is internally provided with a row of correspondingly-rotating engaged brush wheels and engaged idler wheels. A discharging port correspondingly communicating with a conveying inner barrel is formed in the leaf collection box. Leaves can be collected through rotation of the collection rollers. The workload of a sanitation worker can be further reduced, and work efficiency is improved.

The invention discloses environment-friendly and energy-saving type stove equipment and relates to the technical field of stove equipment. The top of a bottom board is fixedly connected with supporting legs, the top ends of the supporting legs are fixedly connected with a stove body, the stove body is internally and fixedly connected with a stove core, the top of the stove body is fixedly connected with a supporting block, the position, located on one side of one supporting leg, of the top of the bottom board is fixedly connected with an air blower, an air outlet of the air blower communicateswith a leather hose, the end, away from the air blower, of the leather hose runs through a shell of the stove body and extends into the stove body, and the end, extending into the stove body, of theleather hose is fixedly connected with a spraying head. By means of the environment-friendly and energy-saving type stove equipment, the fact that a stove is made to perform combustion more sufficiently in combustion can be realized, the loss of heat in the process of combustion can be reduced, in this way, the time needed for combustion and heating of the stove is reduced, and more combustion resources are also saved at the same time.

The invention discloses variable-pitch bearing cleaning equipment which comprises a fan base, a fan supporting column fixedly installed at the top end of the fan base, a fan rear cover fixedly installed at the top end of the fan supporting column, a pneumatic dust collection device used for conducting the dust collection procedure through wind power and arranged in the fan rear cover, and a reciprocating dust collection device. And an extrusion dust collection device for collecting dust under the driving action of the pneumatic dust suction device is arranged in the fan rear cover. Through wind energy conversion of natural wind power, accompanying dust collection treatment during operation of the bearing end in the rear cover of the fan and the natural release function of the collected dust are achieved, so that the operation stability of the variable-pitch bearing is maintained, and in addition, by means of wind power driving and arrangement of a reciprocating structure, the suspended particles, close to the top end, in the fan rear cover are collected and treated, and the phenomenon that components are short-circuited due to excessive dust in the fan rear cover is avoided.

The invention provides a pin header forming equipment for optical fiber connectors and a molding method thereof, and relates to the field of pin header molding equipment. The invention includes a support frame and a polishing main part; a supporting frame is arranged above the polishing main part, and the supporting frame is the same as the polishing element. The main parts are connected to support the polishing main part; the polishing main part includes a stamping assembly, an isolation base is arranged under the stamping assembly, and the isolation base is plugged and connected with the stamping assembly for pumping air into the isolation base, so The stamping assembly is fixedly connected to the upper top of the support frame; the top of the isolation base is provided with a material table, and the stamping assembly is not limited to the clamping function. When the assembly is connected to the isolation base, the air flow is blown into the grinding assembly, so that the grinding medium moves in the grinding assembly with high frequency in the blowing of the air flow, and the needle row inserted into the grinding assembly is polished.

The invention relates to the field of cable cleaning, in particular to a cable surface cleaning device which comprises a base, side plates are fixedly mounted at the left end and the right end of the upper surface of the base, a top plate is fixedly mounted between the tops of the two side plates, a connecting plate is fixedly mounted between the two side plates, and two symmetrical cable placement frames are placed at the top of the base. The ends, close to each other, of the two side plates are sequentially provided with bearing seats, drying mechanisms and flushing mechanisms from top to bottom, the ends, away from each other, of the two side plates are fixedly provided with water tanks, the water tanks communicate with the flushing mechanisms on the corresponding sides, water inlet hoppers are arranged at the tops of the water tanks, and cylinders are rotationally connected into the bearing seats; the outer surface of the cylinder is sleeved with a cable reel, a driven bevel gear is detachably installed at the end, away from the bearing seat, of the cylinder, a motor is fixedly installed at the top of the top plate, and a rotating shaft is fixedly installed at the output end of the motor. The mechanism is compact, and the problems that the cable surface cleaning effect is poor and the efficiency is low are solved.

The invention provides a collection method and an electronic device for displaying pages. The method comprises the following steps: receiving a preset bending operation for a target area of the flexible screen; performing collectible processing on a current display page of the flexible screen in response to the preset bending operation; by detecting and responding to the preset bending operation of the target area of the flexible screen, the embodiment of the invention can realize the collection processing of the current display page of the flexible screen, avoid the operation of clicking on the flexible screen, continue the experience of paper reading, and improve the ease of learning and the user experience.

The invention provides a dust treatment device for a ventilating duct of a winnowing machine. The device comprises a machine box, a grading mechanism is arranged at the bottom of the machine box, the two ends of the machine box communicate with a first shell and a second shell correspondingly, and a fan is fixed in the first shell. A first filtering mechanism used for filtering backflow air is arranged between the first shell and the second shell. The first filtering mechanism comprises a connecting shell arranged below the grading mechanism, the two ends of the connecting shell are rotationally connected with connecting pipes, and the other ends of the two connecting pipes communicate with the opposite faces of the first shell and the second shell correspondingly. Two alternately used frame bodies are slidably connected in the connecting shell. Wind energy resources blown out by the winnowing machine can be recycled, it is avoided that wind blown out by the winnowing machine carries dust and other impurities to directly enter and exit from air, and meanwhile the dust in the wind energy resources used in a backflow mode can be effectively filtered.