338results about How to "HEPA filter" patented technology

The invention relates to the technical field of water meters, and particularly discloses an Internet of Things intelligent water meter which comprises a water collecting box, mounting mechanisms are fixedly mounted at the input end and the output end of the water collecting box, and a filtering mechanism is movably mounted in the water collecting box. When water flow enters the water collecting box through the conical connecting hopper, the water flow is filtered by the filter screen cylinder, impurities are removed, the Internet of Things intelligent water meter is protected, the water flow makes contact with the spiral blade, the spiral blade is spirally twisted, the water flow drives the spiral blade to rotate, and then the rotary disc and the cleaning brush rotate around the filter screen cylinder to clean the outer surface of the filter screen cylinder; water flow enters the interior after being filtered and screened by the filter screen cylinder, then flows to the detection end of the water meter through the water passing holes of the rotary disc and is discharged from the output end of the water collecting box, the cylindrical filter screen is large in filtering area, the water flow can drive self-cleaning, the influence on the flow speed in the water collecting box is reduced, efficient filtering is kept, and the influence on the water flow speed is reduced.

The invention relates to the technical field of wastewater treatment, and discloses a papermaking sludge dewatering and cake forming device which comprises a plate-and-frame filter press main body and a sludge storage assembly arranged above the plate-and-frame filter press main body, the sludge storage assembly comprises a first plate frame, a sliding plate, a rotating shaft and an electric heating copper rod, the first plate frame is slidably connected to the interior of the plate-and-frame filter press main body, and the sliding plate is arranged in the plate-and-frame filter press main body; the sliding plate is slidably connected into the first plate frame, the rotating shaft is rotatably connected into the sliding plate, and supporting frames are symmetrically and fixedly connected to the two sides of the top of the first plate frame; when a second plate frame is separated from a first plate frame, a pressing plate does not extrude a sliding plate any more, the sliding plate can move upwards after being separated, an electric heating copper rod rotates through meshing of a toothed plate and a gear, and therefore it is guaranteed that the outer wall of the electric heating copper rod is separated from the bonding state with a mud cake in the first plate frame due to autorotation, and the situation that the mud cake is stuck to the mud cake is reduced when the mud cake is separated from the interior of the first plate frame. And the first plate frame is adhered to the inner cavity of the first plate frame so as not to be separated cleanly.

The invention discloses multi-stage wastewater treatment equipment for fabric disinfectant production, and relates to the technical field of wastewater treatment.The multi-stage wastewater treatment equipment for fabric disinfectant production comprises a filtering bin, a shielding cover is detachably and fixedly installed at the top end of the filtering bin, and a water inlet pipe is fixedly communicated with the center of the top of the shielding cover; the auxiliary stirring mechanism comprises a rotating part which is rotationally connected to the center position of the bottom of the inner wall of the filtering bin; the compression of the supporting spring and the compression of the buffer spring are synchronously carried out, when the flow of waste water is reduced or the impact force applied by the flow to the trapezoidal block is changed, the acting force on the supporting spring and the buffer spring is reduced, and the supporting spring and the buffer spring tend to rebound upwards, so that the filter screen is further buffered through the supporting spring and the buffer spring; meanwhile, the filter screen vibrates in the using process, and the situation that the filter screen is blocked by large-particle impurities, and preliminary filtration of the wastewater is affected is avoided.

The utility model relates to a livestock farm ventilation disinfection device which comprises a ventilation structure shell and a disinfection assembly located in the ventilation structure shell, the disinfection assembly comprises a primary filter screen, a micro-static air purification module and an ultraviolet disinfection module which are sequentially arranged in the air flowing direction, and a fan is installed at one end of the ventilation structure shell. The fan is located on the side, away from the micro-electrostatic air purification module, of the ultraviolet disinfection module. Under the power action of the fan, air with bacteria is primarily filtered through the primary filter screen, then is dedusted and purified through the micro-electrostatic air purification module and then is subjected to ultraviolet deactivation through the ultraviolet disinfection module, ventilation is still kept in the feeding period, meanwhile, through front-stage filtering and rear-stage disinfection and sterilization, the air quality is improved, and the breeding efficiency is improved. The disinfection efficiency and effect are improved, so that the concentration of bacteria in the air is reduced, and the infection probability is reduced.

The invention provides a multi-source heterogeneous data processing method and device, electronic equipment and a storage medium, and is applied to a software operation system and a third-party system.The method comprises the steps that a transmission mode and a data format supported by data access of the software operation system are defined, and multi-source heterogeneous data are obtained from the third-party system according to the transmission mode and the data format; performing data processing on the multi-source heterogeneous data, wherein the data processing comprises data analysis, data cleaning, data conversion and data processing; performing hierarchical storage on the processed multi-source heterogeneous data according to data attributes; and obtaining post-monitoring configuration information of the multi-source heterogeneous data after data processing, and triggering a service logic operation according to the post-monitoring configuration information. According to the method, a network protocol is used for replacing a third-party system for data access, the reuse rate of codes is increased, the development workload is reduced, later iteration and extension of a software operation system are facilitated, and visualization, configuration and full-life-cycle management of data processing can be achieved.

The utility model relates to the technical field of dust removal, and discloses a dust filtering environment-friendly device which comprises a machine shell, a filter element is installed in the machine shell, a lifting ring is arranged on the filter element in a sleeved mode, a cleaning ring is rotatably installed on the inner ring of the lifting ring, bristles are arranged on the inner ring of the cleaning ring and make contact with the outer surface of the filter element, and the cleaning ring is connected with the machine shell. And a driving assembly and a rotating assembly are arranged in the machine shell. Under the action of the motor and the lead screw, automation is achieved in the cleaning process, manual intervention is not needed, and operation convenience and efficiency are greatly improved.

The invention discloses a trash rack grid for hydropower station sewage treatment and a trash holding method thereof.The trash rack grid comprises a trash holding outer frame, the two ends of the trash holding outer frame fixedly communicate with a water inlet and a water outlet correspondingly, and two filtering assemblies used for filtering impurities are arranged in the trash holding outer frame in parallel; the filtering assembly comprises two side plates, and the two side plates are fixedly connected to the two sides of the trash holding outer frame correspondingly. Impurities can be filtered by arranging the first grating plate and the second grating plate and collected in the collecting box, the filtering efficiency can be guaranteed, the two filtering assemblies can be switched by arranging the driving assembly, manual cleaning is not needed, the working efficiency is improved, and the practicability is high. In addition, when the filtering assembly is lifted, the first grating plate and the second grating plate can be turned up towards the two sides, then internal impurities can be helped to be discharged, and then the workload of workers can be greatly reduced.

The invention discloses a fish excrement and particulate matter filtering device for a fish tank, and relates to the technical field of fish tank accessories, the fish excrement and particulate matter filtering device comprises an upper cover, a filtering main body box, a drawer outer box, a filtering drawer and a confluence bottom support; the device is small and exquisite in overall design, small in occupied space and suitable for fish tanks of different sizes, the space around the fish tanks is saved through the design, the device is more attractive and elegant, meanwhile, due to the characteristic of modular assembly, a user can flexibly adjust the device according to the actual size and requirements of the fish tanks, and the practicability is high. The water outlet grooves of the three groups of inclined nozzles in the device obliquely spray water to cooperatively drive the filter screen to rotate, so that effective filtering is realized, fish manure and particle impurities are cleaned through physical scouring and rotary centrifugation, the filter screen is effectively prevented from being blocked, the filtering effect is remarkably improved, and meanwhile, the water outlet grooves of the three groups of inclined nozzles are effectively prevented from being blocked. The design of the rotary filter screen and the inclined nozzle also reduces the energy consumption, and conforms to the modern environment-friendly and energy-saving concept.

The invention particularly relates to a papermaking sewage treatment and purification device which comprises a box body, a transverse rotating cage is arranged in the box body, end plates are arranged at the two ends of the rotating cage, a transverse shaft is fixedly installed in the center of the outer side of one end plate, and the outer end of the transverse shaft penetrates out of the box body and is rotationally connected with the box body and is connected with the output end of a power device. An outlet is formed in the bottom of the box body, a transverse pipe is fixedly connected to the center of the outer side of the other end plate, the outer end of the transverse pipe penetrates out of the box body and is rotationally connected with the box body, and the outer end of the transverse shaft is rotationally connected with the lower end of a feeding pipe; papermaking sewage is injected into the filtering chamber through the feeding pipe and the transverse pipe, then the power device is started to drive the rotating cage and the filtering chamber to rotate, the sewage can be rapidly filtered by the filtering plate under the working effect of gravity and centrifugal force and is discharged through the outlet, residues are temporarily stored in the filtering chamber after filtering is completed, then the filtering plate is turned over by 180 degrees, and the filtering plate is turned over by 180 degrees. And therefore, the functions of efficiently filtering and automatically cleaning the residues on the filter plate are realized.

The utility model belongs to the technical field of water purifiers, particularly relates to an integrated water purifier with a composite filter element, and aims to solve the problems that the existing water purifier with the composite filter element is complicated in structure and tedious in installation, the filter element is inconvenient to replace, the maintenance cost is high and the like. The water purifier main body is composed of a first filtering part, a second filtering part and a third filtering part, the first filtering part, the second filtering part and the third filtering part are fixedly connected in sequence, a filter element is arranged in the first filtering part, the filter element is made of PP cotton, and activated carbon is arranged in the second filtering part. According to the integrated composite filter element water purifier, impurities, bacteria and viruses in water are effectively removed through a multiple filtering technology, the water quality is ensured to be pure, the detachable movable cover design enables the filter element to be replaced easily and rapidly, the maintenance cost is reduced, the installation process is simplified through the combined design of the installation support, and meanwhile the stability of the water purifier is ensured.

The utility model relates to the technical field of dust removal equipment, and provides anti-blocking dust removal equipment, which is characterized in that three conical filter elements are sequentially arranged at the middle section position inside an outer tank body from top to bottom, three groups of flushing nozzles are arranged on the tank wall of the outer tank body, and each group comprises four flushing nozzles; the four flushing nozzles in one group are aligned to the surfaces of the conical filter elements, three cleaning liquid guide-out valve pipes which are communicated with the top surface spaces of the three conical filter elements respectively are arranged on the tank wall of the right side of the outer tank body, and four filter element anti-blocking scrapers are uniformly distributed on the top surface of each conical filter element; a rotary driving mechanism for driving the four filter element anti-blocking scrapers on the top surface of each conical filter element to rotate and scrape is mounted in the outer tank body; and a negative pressure air pump is mounted on the left side, close to the lower end, of the outer tank body. The dust removal equipment has the advantages of blockage prevention, efficient filtration, automatic cleaning and the like, is suitable for various industrial production places and environments, improves the air quality, guarantees the health of personnel, and is dust removal equipment with excellent performance.

The present invention relates to the technical field of thickening agent preparation devices, and discloses a beta-cyclodextrin gemini surfactant-containing thickening agent preparation device, which comprises an outer kettle, an inner filter cylinder is installed in the outer kettle, the inner filter cylinder comprises an annular support wall and an annular filter screen wall, the annular support wall and the annular filter screen wall are vertically staggered, connected and fixed, and the annular filter screen wall is provided with filtration holes. The annular filter screen wall can filter a thickening agent or a raw material in the inner filter cylinder into the outer kettle and intercept impurities in the inner filter cylinder, and the annular supporting wall plays a role in maintaining the structural strength of the inner filter cylinder, the inner kettle body and the outer kettle body are adopted, preparation of the thickening agent is completed, the impurities and residues can be efficiently filtered out, and compared with the prior art, the inner kettle body and the outer kettle body are simple in structure and convenient to use. The device has the advantages of small occupied area, compact structure and low cost; the structure of the inner filter cylinder body is specially designed, the overall strength of the structure can be guaranteed, meanwhile, the thickness of the annular filter screen wall is reduced, the blocking risk is reduced, and the filtering efficiency is improved.

The invention discloses a ship route planning method and system based on deep learning large-scale extreme wind speed forecast, and relates to the technical field of artificial intelligence and maritime navigation. An incremental principal component analysis method is introduced, a large-scale sea surface extreme wind speed forecasting model based on depth separable convolution is constructed, and potential physical sudden change disturbance information is decoded and reserved in a variable high-dimensional mapping space by the model through integration of an attention mechanism module and a residual learning algorithm; the attention mechanism module maps high-dimensional feature information in an extreme wind field time sequence to a multi-dimensional feature matrix of a coder-decoder. The method can perform refined dynamic forecasting on the large-scale sea surface extreme wind speed, accurately detect the extreme wind speed sea area and the boundary thereof, forecast and master the intermittent sudden change rule of the sea extreme wind speed in advance, help a ship driver to dynamically adjust the ship route in real time and avoid severe storm weather, and further ensure the navigation safety.

The invention discloses an edible oil refining and precipitating device, and belongs to the technical field of edible oil treatment.The edible oil refining and precipitating device comprises two supporting plates, fixing boxes are fixedly connected between the two supporting plates, a precipitating box is fixedly connected to the bottoms of the fixing boxes, a mounting plate is fixedly connected between the two fixing boxes, and a filter screen is arranged in each fixing box; a swing filtering assembly is arranged above the fixing box and used for conducting preliminary filtering treatment on edible oil, a lifting and twisting assembly is arranged at the bottom of the swing filtering assembly, the lifting and twisting assembly is rotationally connected with the mounting plate, and the lifting and twisting assembly is used for driving the swing filtering assembly to ascend, descend and twist in a reciprocating mode; and the bottom of the lifting and twisting assembly is provided with a driving and filtering assembly. According to the edible oil centrifugal separation device, multiple times of filtering separation can be conveniently carried out, and the device can shake in the transverse direction and the longitudinal direction during centrifugal separation, so that the contact position of edible oil and the filtering holes is continuously changed, and high-quality and high-efficiency separation is guaranteed.

The invention provides a civil engineering construction waste treatment device, and relates to the technical field of civil engineering. The civil engineering construction waste treatment device comprises a smashing and impurity removing mechanism, a conveying belt is fixedly arranged at the upper end of the smashing and impurity removing mechanism, a sorting mechanism is arranged on the side, away from the conveying belt, of the smashing and impurity removing mechanism, and a conveying motor is fixedly arranged on one side of the conveying belt; a power shaft is arranged at the output end of the transmission motor through a speed reducer, first synchronous wheels are fixedly arranged at the two ends of the power shaft correspondingly, the smashing and impurity removing mechanism comprises a smashing frame, a translation plate is slidably arranged in one side of the smashing frame, a discharging plate is fixedly arranged on one side of the translation plate, and a filter screen is arranged in the discharging plate in a penetrating mode; telescopic side plates are fixedly arranged at the front and back positions of one side of the discharging plate. Waste materials fall into the corresponding classification frames according to the mass of the waste materials, preliminary and convenient waste material classification is achieved, and great convenience is provided for follow-up machining work.

The utility model provides a bag-type dust remover, which belongs to the technical field of dust removal in cellulose ether production and comprises a dust removal box body and a fixing plate arranged at the upper end of an inner cavity of the dust removal box body, dust removal filter bags are arranged in mounting ports distributed in an array on the fixing plate, and a shaking mechanism for driving the dust removal filter bags to shake is further arranged on the dust removal box body. The shaking mechanism comprises sliding holes which are longitudinally and symmetrically formed in the left end and the right end of the upper surface of the dust removal box body respectively, sliding rods are slidably connected into the sliding holes, a bottom supporting frame is arranged among the bottom ends of the four sliding rods, and the lower ends of the dust removal filter bags are fixedly connected with the upper surface of the bottom supporting frame. According to the dust removal device, the shaking mechanism is matched with the pulse dust removal assembly, so that the dust removal effect on the dust removal filter bag is further improved, the dust removal filter bag is always kept in an efficient filtering state, dust-containing gas generated in the cellulose ether production process can be efficiently filtered, and the problem that the dust removal effect at the bottom of the dust removal filter bag is poor is solved.

The invention discloses a mining ultra-clean fresh air individual supply protection system and method. According to the system, the air inlet end of an air supply barrel is arranged in an air supply roadway, and the air outlet end of the air supply barrel extends into a tunneling roadway; two air supply modes of a local ventilator and an underground compressed air system are adopted; the local fan is mounted at the air inlet end of the air supply cylinder; the compressed air system is arranged along the roadway; the fresh air filter is arranged in a tunneling roadway, a multi-stage filtering assembly is connected with an air supply barrel through a fresh air device air inlet pipe and connected with an ultra-clean air flow bin through an ultra-clean air flow air supply pipe, and a carbon monoxide absorption device and a fresh air device air pump are arranged in the ultra-clean air flow air supply pipe. The individual air supply pipeline is connected with the ultra-clean air flow bin, and the one-way valve, the flow adjusting device and the breathing mask are sequentially arranged on the individual air supply pipeline. The method comprises the steps that fresh air is supplied into the air supply barrel through the local ventilator; the fresh air is deeply purified through the fresh air filter and conveyed into the breathing mask through the individual air supply pipeline. According to the system and the method, personalized clean air supply can be carried out.

The invention discloses a photovoltaic fluorine-containing wastewater recycling treatment process, and particularly relates to the field of wastewater treatment.The photovoltaic fluorine-containing wastewater recycling treatment process comprises the following steps that the pH value of fluorine-containing wastewater is adjusted in a multi-stage adjusting mode, activated carbon or kieselguhr serves as a filtering medium, and particle impurities and suspended solids are removed; the solid content in the wastewater is reduced to a set threshold value. Through multi-stage pH value adjustment, optimized filtration, electrolytic treatment and ion exchange resin defluorination processes, and in combination with real-time monitoring of a sensor and judgment of a decision tree model, high efficiency and automation of wastewater treatment are realized; according to the invention, fluorine ions, heavy metals and organic matters are fully removed in each stage, and dynamic adjustment of the proportion of the filtering medium is ensured, so that the whole process is stable and efficient, and the recycling standard is reached.

The invention relates to the technical field of air purification, in particular to air purification equipment based on a hoisting structure and an air purification method.The air purification equipment comprises a self-cleaning filtering device installed at the air outlet end of an air purification device, and the self-cleaning filtering device comprises an airflow control rail, a self-rotation cleaning installation frame, a limiting filtering layer and a dust collecting bin; the airflow control rail is installed in the air purification device, the air inlet end of the airflow control rail communicates with the air outlet end of the air purification device, and the airflow control rail is used for controlling airflow; a plurality of autorotation cleaning mounting frames are uniformly mounted at the air outlet end of the airflow control rail; a plurality of limiting filter layers are uniformly mounted in the self-rotating cleaning mounting frame and are used for filtering air; and the multiple dust collecting bins are evenly installed at the bottom of the autorotation cleaning installation frame and used for collecting cleaned dust, the maintenance time can be effectively shortened, and meanwhile the maintenance risk is reduced.

The utility model relates to a filtering device for recycling wire drawing liquid, which comprises a cylinder shell capable of completing multiple filtering of the wire drawing liquid in sections, the cylinder shell comprises a coarse filtering shell positioned at the axial upper section, a connecting guide shell positioned at the axial middle section and a fine filtering shell positioned at the axial lower section, a coarse filtering assembly, an adjustable communicating pipeline and a fine filtering assembly are respectively arranged in the coarse filtering shell, the connecting guide shell and the fine filtering shell which are connected in sequence, and the coarse filtering assembly and the fine filtering assembly are used for purifying the wire drawing liquid in a manner of constructing a two-stage filtering structure; the fine filtering assembly synchronously completes uninterrupted fine filtering and filter residue cleaning in a partitioned filtering manner; the axial upper end surface and the axial lower end surface of the cylinder shell are respectively provided with a flow inlet and a flow outlet which are used for limiting the inflow and the outflow of wire drawing liquid. The wire drawing liquid filtering device can continuously and continuously perform efficient and high-quality multiple filtering on the wire drawing liquid.

The invention discloses a solar seawater desalination device and a control method thereof. The solar seawater desalination device comprises a solar heat collection device, an evaporation chamber and a seawater extraction device, the improvement point is that a first heat conducting plate is arranged at the top of the evaporation chamber, and a first channel for communicating the first porous hydrophilic plate with the first water outlet pipe and a second channel for communicating each second porous hydrophilic plate with the second water outlet pipe are arranged in the first heat conducting plate; a first valve is arranged on the second water outlet pipe and electrically connected with a controller, the controller is electrically connected with a temperature sensor, and the temperature sensor is used for obtaining the temperature in the evaporation chamber. Due to the adoption of the technical scheme, compared with the prior art, water is directly supplemented to the second porous hydrophilic plate through the first channel, and the water supplementing flow is increased along with the increase of the temperature value, so that the evaporation efficiency is adaptively adjusted according to the illumination condition, and the energy conversion efficiency and the water yield are improved. And secondly, the problem of evaporation weakness caused by energy attenuation in the layer-by-layer heat transfer process is effectively solved.

The utility model belongs to the technical field of dust filtration, in particular relates to a closed-loop filtering device, and aims to solve the problems that a part of existing special filtering devices have strict requirements on resistance of a filter during filtration, so that a filter drum needs to be frequently replaced for multiple times, the operation is complicated and the like, and adopts the scheme that the closed-loop filtering device comprises a filtering barrel, the top of the filter barrel is detachably provided with an access cover, the access cover is used for conveniently overhauling the interior of the filter barrel, the bottom of the filter barrel is fixedly provided with an ash receiving hopper, the bottom end of the ash receiving hopper is provided with an ash cleaning port, and the ash cleaning port of the ash receiving hopper is provided with a zero-leakage valve. According to the closed-loop filtering device, through the arrangement of the plurality of filter cartridges, the filtering area and the dust capturing capacity are remarkably improved, meanwhile, a reverse blowing cleaning mode is adopted, tedious operation of frequently disassembling and replacing a filtering assembly is avoided, the maintenance cost and difficulty are reduced, and efficient filtering and convenient cleaning and maintenance of dust are achieved.

The invention provides novel organic liquid fertilizer production equipment and a production process, and relates to the technical field of organic liquid fertilizer production.The novel organic liquid fertilizer production equipment comprises a filtering mechanism, a biogas slurry tank, a sterilization and disinfection mechanism, a stirring tank, a quantum device and a storage tank; the output end of the filtering mechanism is communicated with the storage tank through the biogas slurry tank, the sterilization and disinfection mechanism, the stirring tank and the quantum device in sequence, the filtering mechanism comprises a fine filter and a coarse filter, the fine filter is communicated with the output end of the coarse filter, and the sterilization and disinfection mechanism comprises an ultraviolet sterilization device and an ozone sterilizer. The ozone sterilizer is used for sterilizing the interior of the biogas slurry tank, and the output end of the biogas slurry tank is communicated with the ultraviolet sterilization device. The invention effectively solves the environmental protection problem of secondary pollution caused by wastes such as biogas slurry and livestock and poultry manure, and provides a green high-quality novel physical bio-fertilizer for increasing production and income in agriculture, improving quality and preventing diseases.

The invention discloses a silencing device for an outlet of a fire-fighting smoke exhaust fan. The silencing device comprises a mounting cylinder and a plurality of components assembled in the mounting cylinder, wherein the components comprise a smoke dust cleaning component, a heat exchange silencing component, a smoke dust collecting tank, an adsorption component and a smoke dust discharging component. The smoke cleaning assembly is located at the top of the mounting cylinder, the heat exchange silencing assembly and the smoke collecting tank are connected to the bottom of the mounting cylinder, the adsorption assembly is connected to the bottom of the heat exchange silencing assembly, and the smoke discharging assembly is connected to the bottom of the smoke collecting tank and located on the inner side of the adsorption assembly. The device forms a closed cold air through cavity, and a smoke outlet is formed in the bottom, so that effective smoke emission is ensured. In addition, the device further comprises a stirring assembly, a conveying assembly and a driving assembly which are connected with the adsorption assembly and the smoke dust discharging assembly respectively. Not only is the silencing effect remarkably improved, but also the functions of smoke cooling, dust removal and toxic and harmful substance treatment are integrated, many problems in the prior art are effectively solved, and a safe, environment-friendly and efficient smoke exhaust silencing device is provided for the field of fire protection and smoke exhaust.

The utility model provides a power distribution type differential pressure control module which comprises a module shell and an air pipe, the interior of the module shell is divided into an upper layer and a lower layer through a partition plate, the upper layer is provided with a ventilation assembly, the lower layer is provided with a display control assembly, and the display control assembly comprises a pointer type differential pressure gauge, a control panel and a power supply device. The module shell is provided with a window for exposing the pointer type differential pressure gauge and the control panel, one end of the air pipe is plugged, the other end of the air pipe is communicated with the front face or the back face of the module shell and corresponds to the ventilation assembly in position, the plugged end of the air pipe and the face, away from the air pipe, of the module shell are provided with ventilation holes, and the ventilation holes correspond to the ventilation assembly in a front-back mode. The ventilation assembly comprises a high-efficiency filter, an air purifier and a fan set which are arranged in the air flow direction. The device is low in manufacturing cost, short in manufacturing period, simple in structure, convenient to maintain and capable of being widely applied to rooms where the negative pressure environment needs to be maintained to avoid pollutant leakage.

The invention discloses a high-efficiency filter device, and relates to the technical field of filters, the high-efficiency filter device comprises a shell, a flow dividing box is arranged in the shell, a rectangular groove is formed in the periphery of the flow dividing box, a filter block body is slidably connected in the rectangular groove in a sealed mode, and filter holes are formed in the two sides and the outer side of the filter block body; a cleaning assembly used for driving the four sets of filter block bodies to reciprocate is arranged in the flow dividing box, and the cleaning assembly is used for cleaning filter holes of the filter block bodies. According to the efficient filter device, through linkage of components such as a first deviation shaft, a disc, a second deviation shaft and a rotary disc, reciprocating motion of a filter block body is driven, autorotation of related components is achieved through the meshing relation of a gear and a gear ring, and the autorotation effect drives reciprocating motion of components such as a movable rod and a sliding rod; therefore, sundries in the filter holes can be automatically pierced and cleaned, the filter holes are effectively prevented from being blocked, and the service life of the filter block is prolonged.

The invention discloses a coal chemical industry production sewage treatment device which comprises a treatment cylinder, a partition plate is fixedly connected to the middle of the interior of the treatment cylinder, a filter screen plate is slidably connected to the bottom surface of the partition plate, a through groove is formed in the partition plate, and a fixing rod is fixedly connected to the side face of the interior of the through groove. One end of the fixing rod is fixedly connected with a fixing cylinder, one end of the fixing cylinder is located at the upper end of the treatment cylinder, a rotating rod is rotationally installed in the fixing cylinder, a motor is installed at the top of the rotating rod and fixedly installed on the upper surface of the fixing cylinder, and a cleaning structure is installed at one end of the rotating rod. The cleaning structure is connected to the surface of one side of the filter screen plate, and one end of the fixing cylinder is connected with an identification structure, so that high-efficiency filtration through pressurization and water passing is facilitated, meanwhile, cleaning is facilitated, blockage is reduced, meanwhile, the water outlet efficiency can be identified, and the device is visual, beneficial to combined use and convenient to manage and control.

The utility model discloses an intercepting and filtering device which comprises an outer fixed mounting ring seat, an inner overturning seat is rotatably connected in the outer fixed mounting ring seat, and a plurality of filter bag filtering mechanisms are assembled and connected on the inner overturning seat; the intercepting and filtering device further comprises a pushing mechanism used for pushing the inner overturning base to overturn, the pushing mechanism comprises a support fixedly connected to the edge of the top of the inner overturning base, the pushing mechanism further comprises a pushing air cylinder, a piston rod of the pushing air cylinder is fixedly connected with a pushing rod, and the bottom of the pushing rod is fixedly connected with a pushing ring. A connecting pin shaft is fixedly connected to the support, and the push ring is arranged on the connecting pin shaft in a sleeving mode. According to the device, a large amount of substances attached to and blocked on the filter holes of the filter bag filtering mechanism are continuously separated, and then the filter hole structure is released, so that the filtering effect is improved, and the water passing rate is increased. Further, the filter bag filtering mechanism is intervened in a simple and effective manner, so that high-efficiency filtering is ensured.

The utility model relates to a filter assembly and air treatment equipment. The filter assembly comprises a first frame body, a second frame body, a filter screen and an elastic piece, the first frame body and the second frame body are oppositely arranged and can move relatively; the two ends of the filter screen are connected with the first frame body and the second frame body respectively, and the filter screen deforms along with relative movement of the first frame body and the second frame body; the elastic member always tends to keep the first frame away from the second frame. According to the filter assembly provided by the invention, deformation and size adjustment of the filter assembly can be realized through relative movement between the first frame body and the second frame body. When the filtering assembly needs to be disassembled, the first frame body and the second frame body are close to each other, so that the size of the filtering assembly is reduced, and the filtering assembly can be directly taken out of the air treatment equipment conveniently. The elastic piece always has the trend of enabling the first frame body to be far away from the second frame body, so that the filtering assembly can recover to the normal size during normal use, and the filtering assembly can be accurately mounted in the air treatment equipment.

This invention discloses a time-constrained, secure, and controllable data flow method in a cloud-edge environment, belonging to the field of mobile edge cloud computing. Specifically, it involves: First, establishing a communication scenario including an authorizing agency for both the sender and receiver, the sender, edge nodes, a cloud server, and the receiver. Given security parameters, the authorized agency for the receiver runs a global initialization algorithm, outputting public parameters and domain public / private keys. Then, the authorized agency for the sender inputs the public parameters and domain public key, outputting its own domain public / private key. For each sender, an access structure and a valid time interval are assigned, and an encryption key is generated. For each receiver, an attribute set is assigned, and a decryption key is generated. Finally, the sender runs the encryption algorithm and outputs the original ciphertext; the edge node verifies the sender's sending authority and outputs the cleaned ciphertext; and the legitimate receiver decrypts and outputs the plaintext. This invention meets the requirements for secure and controllable data flow in a cloud-edge environment.