27results about How to "HEPA filter" patented technology

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.

This application provides a rainwater harvesting and utilization system for vertical greening buildings, relating to the field of green building. It includes a downpipe and a water storage tank embedded in the base of the building. One end of the downpipe connects to the top of the building, and the other end of the downpipe has a first branch pipe and a second branch pipe. One end of the first branch pipe connects to the downpipe, and the other end has a detachable sealing cap. One end of the second branch pipe connects to the downpipe, and the other end supplies rainwater to the water storage tank. The second branch pipe is equipped with a filter mechanism for filtering rainwater. The water storage tank contains a water pump and a sprinkler pipe. The water pump pumps the rainwater from the storage tank through the sprinkler pipe for watering the plants. This application has the effect of collecting and reusing rainwater without causing silt accumulation and clogging.

The utility model provides a novel air -cooled steam cooler belongs to cooler technical field. It solved the problem that the existing air -cooled steam cooler lacks filter structure, causes impurity to enter the inside of organism, influences spare part loss and overall service life. The novel air -cooled steam cooler, including organism and the screw hole position of fan installation on the organism, the organism has two convex platforms that protrude outward, the fan is two and is covered in the outside of corresponding convex platform through screw respectively, the convex platform end face is provided with annular groove, is provided with a plurality of installation groove positions that communicate with annular groove on the inside of convex platform, the skeleton filter screen is clamped in annular groove, and the skeleton filter screen includes skeleton ring and filter screen part, and is equipped with a plurality of positioning parts positioned in corresponding installation groove position between skeleton ring and filter screen part, and the inner wall of positioning part has arc -shaped clamping groove's arc -shaped clamping section, and the outer ring of filter screen part has the hoop ring. The utility model has the advantages of efficient filtration and prolonging overall service life.

The utility model provides a kind of air purification device, it is related to purification equipment technical field, solve the technical problem that fixed purification equipment is difficult to meet different scene needs.The air purification device, including main body, filter assembly, purification assembly, bottom plate, universal wheel;Main body is installed on bottom plate;Filter assembly is set in main body, to carry out physical filtration to air;Purification assembly is set in main body, and it is side by side with filter assembly and is arranged, for carrying out chemical purification to air;Universal wheel is installed in main body bottom.The utility model is used for the air purification of multiple scenes.

The application discloses a kind of fine-grained vanadium-titanium iron concentrate filtration pretreatment methods, comprising the following steps: fine-grained vanadium-titanium iron concentrate and water are mixed and the mass fraction of the fine-grained vanadium-titanium iron concentrate in the obtained suspension is adjusted to predetermined concentration, obtain first slurry;First slurry is passed through demagnetizer, and demagnetization is carried out, and second slurry is obtained;Second slurry is treated with ultrasonic wave, and third slurry is obtained;Third slurry is mixed with a predetermined amount of flocculating agent and then sent into a magnetic separation column after stirring, the operating parameters of the magnetic separation column are adjusted, the height difference between the mixed slurry in the magnetic separation column cylinder and the overflow surface is controlled, and the mass fraction of fine-grained vanadium-titanium iron concentrate in the fourth slurry flowing out of the magnetic separation column is controlled to be a predetermined concentration, and the flocculating agent is prepared from corn starch;Vacuum filtration is carried out on the fourth slurry.It is beneficial to increase the agglomeration diameter of fine-grained vanadium-titanium iron concentrate particles before filtration, reduce the moisture content of the product obtained after filtration of fine-grained vanadium-titanium iron concentrate, and improve the filtration efficiency.

The invention discloses molten iron spheroidizing equipment for nodular cast iron well lid production, and relates to the technical field of molten iron spheroidizing equipment.The molten iron spheroidizing equipment comprises a mounting frame, a guide rail is arranged on the mounting frame, a ladle trolley and a hydraulic push rod which move along the guide rail are arranged on the guide rail, the hydraulic push rod is arranged on the mounting frame, and the output end of the hydraulic push rod is connected with a lifting plate; and the driving mechanism is used for driving the lifting plate to vertically lift. The device has the advantages that splashing and disordered diffusion of flue gas are inhibited from the source by combining an under-liquid feeding mode of the material guide pipe with enclosure sealing of the sleeving cylinder, the negative pressure flue gas treatment system realizes immediate capture and efficient filtration of reaction flue dust, the working environment is remarkably improved, self movement of the ladle vehicle is creatively utilized as a power source, and the energy consumption of the ladle vehicle is reduced. The scraping assembly and the lifting rapping mechanism are driven in a linkage mode, automatic removal of splashing residues and inertial dust removal of the filtering unit are completed respectively, and self-maintenance of key functional components is achieved.

The utility model relates to dust absorption device technical field discloses a dust collector with noise reduction structure, including the shell, the outside fixed connection of shell has the cleaning mechanism, the inside fixed connection of cleaning mechanism has the filter structure, the outside fixed connection of cleaning mechanism has the connecting mechanism, the filter structure includes the frame, the inside slide connection of frame has the filter plate, the outside fixed connection of filter plate has the connecting block no.

The utility model discloses a kind of crystallizing tank devices of automation precision temperature control, it is related to crystallizing tank technical field, specifically a kind of crystallizing tank devices of automation precision temperature control, including crystallizing tank main body, further include filter component;By setting first collecting hopper, cylinder, second collecting hopper and spiral conveying rod and the structure such as etc., the efficient filtration to impurity in crystallization is realized.Crystalline is conveyed to right side under the driving of spiral conveying rod, falls down impurity through filter screen in the process, while fixed rod on spiral conveying rod further drives crystalline to turn over, improve filtering effect.In addition, cylinder can slide left and right under the driving of second motor, further enhance the turning effect of crystal, make impurity more fully contact with filter screen, to realize more thorough filtration.Compared with prior art, the filtering efficiency of the utility model is significantly improved, can effectively remove impurity in crystallization, improve the purity of product, satisfy the demand of high-purity product production.

This utility model discloses a gas filtration device, which includes an inlet cabinet and an outlet cabinet. The inlet cabinet is positioned above the outlet cabinet, and a filter screen is installed between the two cabinets. Two dust collection bags are installed on both sides inside the inlet cabinet, and the dust collection bags are surrounded by a partition net. A ventilation cavity is formed between the adjacent partition nets on the outer sides of the two dust collection bags. Through holes are provided on the side panels of the inlet and outlet cabinets, as well as on the doors of both cabinets. A filter box is located below the filter screen, and a filter assembly is installed inside the filter box. An exhaust fan is located below the filter box, and the exhaust port on the filter box is connected to the air inlet of the exhaust fan via a ventilation pipe. The gas filtration device inputs gas through the side panel of the inlet cabinet, filters it through the dust collection bags and the filter box, and outputs it through the side panel of the outlet cabinet. This effectively filters fine particulate matter near the ground, maintaining a high level of cleanliness in the space where machine racks and workbenches are located in the workshop.

This utility model relates to the field of electronic patch panel technology and discloses an electronic patch panel with dustproof function. It includes a patch panel body, a dustproof component on the side wall of the patch panel body, and a fixing component on the side wall of the patch panel body. The dustproof component includes a lower shell and an upper shell. The side wall of the upper shell is rotatably connected to the inside of the patch panel body, and the side wall of the lower shell is fixedly connected to the side wall of the patch panel body. A second fixing sleeve is fixedly connected to the side wall of the lower shell, and a first fixing sleeve is fixedly connected to the side wall of the upper shell. A first locking block is fixedly connected inside the first fixing sleeve. In this utility model, a torsion spring drives the upper shell and lower shell to fit tightly together, and a sealing block eliminates gaps. Simultaneously, a spring drives the second locking block to engage with the first locking block to achieve locking. The sealing gasket in the groove forms a wrapping seal for the cable. Pressing the push block releases the lock and opens the upper shell. This structure improves the dustproof reliability and ease of use of the equipment.

This application relates to the field of beer production technology, specifically a stable supply device for flavor lipid additives in beer production. This application achieves efficient filtration of flavor lipid additives by installing a vibration filtration mechanism within an internal filter box. This ensures the efficient addition of flavor lipid additives into the beer fermentation tank through vibration filtration, guaranteeing the flow rate of the additives through the filter box. Furthermore, by installing a buffer tank at the end of the delivery pipe on the metering pump, and a pressure applying mechanism on the buffer tank, residual flavor lipid additives in the buffer tank are electrically pressurized and fully discharged into the beer fermentation tank when the addition of flavor lipid additives is nearing completion. This ensures the accuracy of the added amount of flavor lipid additives and guarantees the final fermentation quality of the beer.

The utility model relates to tunnel ventilation equipment technical field, and disclose a small radius spiral tunnel construction ventilation device, including ventilation pipeline main part, be provided with ventilation fan in ventilation pipeline main part, the side of ventilation fan is driven through the drive motor that is established and is driven, the side of ventilation fan is provided with dust filter assembly for filtering, the below of dust filter assembly is provided with dust collection assembly for dust collection, the utility model discloses the dust filter assembly is set up in ventilation pipeline main part, wherein the dust filter screen in dust filter assembly can filter dust in the airflow that is inhaled through the drive of ventilation fan, and the dust that falls into the bottom collecting bin is collected by the dust falling port, ensure that dust filter screen high -efficient filtration can avoid the dust after filtering again easily return to ventilation pipeline main part, and the safety and reliability are higher, and the use of the user is more convenient.

The utility model provides a kind of mine ash removal device, it relates to mine dust removal technical field, including: casing, air inlet, air outlet, air cylinder, cyclone dust collector, support frame, hopper and electromagnetic pulse valve;The inside of casing is provided with filter dust board and filter dust bag;Electromagnetic pulse valve is set to the left side outside casing, and air pocket is fixedly connected on the lower side, and left side is fixedly connected with spout pipe.Filter dust board and filter dust bag, can carry out efficient filtration to working area dust, ensure optimum filtration effect, fixed plate right end is provided with rotary groove, rotary groove is provided with snap ring inside, snap ring can rotate, can realize filter dust bag rotation, avoid partial stress to cause filter dust bag cleaning uneven, spout pipe is provided with baffle, baffle can be moved according to the position of filter dust board and filter dust bag, design is more reasonable, can be targeted automatic flushing, reduce the risk of blockage, prolong equipment service life.

The application discloses a desulfurization slurry physical defoaming device and a defoaming method, and belongs to the technical field of defoaming separation. The method comprises the following steps: overflowing the foam-containing slurry into a defoaming separation device; performing preliminary physical defoaming by using a multiple mechanical defoaming module driven by slurry flow force; performing ultrasonic defoaming on the collected slurry by a dynamic ultrasonic defoaming module; filtering and dynamically cleaning the slurry after defoaming by using a filter integration processing module; guiding the purified slurry back to a desulfurization system, and discharging the remaining foam and slurry into a pit. The application adopts a multistage physical defoaming mode combining mechanical extrusion, ultrasonic vibration and filter cleaning, has the advantages of high defoaming efficiency, online slurry recovery, filter screen blockage avoidance and pit load reduction.

This utility model relates to the field of waste gas recovery technology and discloses an integrated waste gas recovery and purification device, including a storage tank. Connecting pipes are fixedly connected to both sides of the outer wall of the storage tank. A diversion box is fixedly connected to one end of the left connecting pipe, and an inlet pipe is fixedly connected to one side wall of the diversion box. A purification box is fixedly connected to one end of the right connecting pipe. A return assembly is provided on the side wall of the purification box, and the return assembly includes a diversion box two, with a return pipe fixedly connected to the top of the diversion box two. In this utility model, waste gas is first purified for particulate matter in the storage tank, then enters the purification box for further purification, and finally enters the diversion box two. After being detected by a sensor, if the gas passes the test, it is discharged; otherwise, it returns to the diversion box one through the return pipe for further purification. This achieves highly efficient filtration of waste gas, solving the problem of clogging caused by direct filtration of waste gas in traditional devices and improving waste gas purification efficiency.

This utility model discloses a concealed filter kit, comprising: a filter element; and a housing, at least a portion of which is pre-embedded in a wall. The filter element is detachably installed within the housing. The housing has an inlet and an outlet. The inlet is connected to a pipe inside the wall, and water from the pipe flows through the filter element to the outlet. This concealed filter kit, by being pre-embedded in the wall, meets the requirements of compact structure and concealment.

The utility model discloses a kind of water sprinkling cart dust collection integrated efficient filter devices, comprising: barrel, its side surface is arranged import, first outlet, the side surface of import, first outlet is tangent with the inner wall of barrel;Filter structure, it is assembled in one end of barrel, inside along airflow direction is sequentially arranged primary efficiency filter layer, high efficiency filter layer, the air inlet end of filter structure is provided with encapsulation net plate, its air outlet end is docked second outlet;Impurity collection box, it is assembled outside barrel, the dirt collection cavity in it is communicated first outlet.The utility model can solve the problem that existing water sprinkling cart dust collection uses, because of the impurity such as leaf, stone block existing on road surface, it is easy to cause filter structure to be impacted greatly and produce damage, and it can block filter hole and affect filtration efficiency.

The utility model belongs to the technical field of extraction tank, concretely is a kind of spice extraction tank, including tank body, extraction mechanism and deslagging mechanism, the extraction mechanism is arranged in the inside of the tank body, the deslagging mechanism is arranged in the inside of the tank body and is connected with the extraction mechanism;The extraction mechanism includes the separation cylinder fixedly connected in the inside of the tank body, the inside of the separation cylinder is equipped with filter cylinder, the top of the tank body is fixedly connected with first motor, the output of first motor is connected with the rotating shaft extending to the inside of the tank body, the outside of the rotating shaft is fixedly connected with several groups of stirring piece.This spice extraction tank, by first helical shaft vertical transfer slag to second helical shaft, realize efficient deslagging, first helical shaft is connected with rotating shaft by magnetic coupling, rely on electromagnetic control to realize flexible start-stop, when deslagging, magnetic coupling drives first helical shaft to rotate by the driving force of first motor, and slag material is smoothly discharged from tank body.

The application discloses an emergency rescue real-time human body detection method and equipment based on timing motion feature enhancement, which comprises the following steps: acquiring visible light, infrared image sequences and environmental parameters (including smoke concentration and light intensity) of a rescue area in real time, and performing spatial registration preprocessing; performing frame difference processing on the two types of image sequences respectively, generating binary motion masks, calculating optical flow amplitude, and obtaining a multi-scale motion energy field according to adaptive fusion of the smoke concentration; extracting human body micro-motion frequency band energy through time-frequency conversion, generating a frequency domain dynamic attention mask, and combining the multi-scale motion energy field to extract a significant motion target area; constructing a double-branch neural network, extracting timing motion features and multi-modal appearance features, dynamically distributing weights and fusing, and outputting a human body bounding box and a detection confidence; calculating the environmental complexity according to the environmental parameters, determining a dynamic confidence threshold, verifying the detection result in combination with the average temperature of the human body bounding box area, and generating an alarm information if the condition is met. The application aims at solving the problems of high missed detection rate and unstable recognition of traditional methods in complex environments.

The utility model relates to a high reliability leakproof fire hydrant especially to the technical field of fire engineering equipment, including main valve body, valve rod subassembly, drainage channel, the valve rod subassembly is provided with the same coaxial hard alloy sealing ring and self compensation sealing bush, and both form the stepped sealing interface, the utility model discloses set up hard alloy sealing ring, self compensation sealing bush, magnetic drainage valve element, memory alloy spring etc. part, through the stepped cooperation between hard alloy sealing ring and self compensation sealing bush, make sealing bush can through water absorption expansion automatic compensation sealing gap, combine the permanent magnet closing force of magnetic drainage valve element and the low temperature response characteristic of memory alloy spring, and magnetic drainage valve element can open drainage under the spring action when -5 DEG C ~ 0 DEG C. Further reached this device can through dynamic sealing compensation and low temperature automatic drainage, the effect that high pressure water flow sealing and valve body anti -freezing carry out double protection.

The application relates to the technical field of photovoltaic module recycling, and discloses a device and a method for recycling silver and silicon from broken crystalline silicon photovoltaic modules, which comprise an electric sliding table, a winding machine is arranged below the electric sliding table, a storage box is fixedly connected to the winding machine through a connecting rope, a sulfuric acid tank is fixedly connected to the upper surface of the electric sliding table, a nitric acid tank is attached to the outer wall of the sulfuric acid tank, a cleaning pool is attached to the outer wall of the nitric acid tank, one-way valves are fixedly arranged on the outer walls of the sulfuric acid tank, the nitric acid tank and the cleaning pool, water storage boxes are fixedly arranged on the outer walls of the one-way valves, and a sewage collection box is fixedly arranged on the outer wall of the cleaning pool through the one-way valve. The angle of the spray head is intermittently adjusted through the adjusting assembly, so that the washing speed is accelerated, the angle of the spray head is changed, the dead angle of washing is avoided, and the purity of the subsequent silicon powder is reduced.

The utility model discloses symmetric waste steam collection and treatment box, including treatment box main part, the front surface of treatment box main part is inlayed and is installed with filter structure, the inside of treatment box main part is inlayed and is installed with cleaning structure one side, the inside of treatment box main part is inlayed and is installed with condenser another side, treatment box main part includes feed port, box, discharge port, drain, collection box, cork, collection port, the surface of one side of box is provided with feed port, the surface of another side of box is provided with discharge port, the lower surface of box is inlayed and is installed with drain, the inside of box is inlayed and is installed with collection box the top of drain, the upper surface of collection box is provided with collection port, the front surface of box is inlayed and is installed with cork one side below. Symmetric waste steam collection and treatment box can treat waste steam efficiently, and can clean the impurities filtered quickly.

This utility model discloses a cell culture flask for preventing contamination, relating to the field of cell culture flask technology. It includes a mother flask and a daughter flask, each with an installation tube fixedly connected to one side. A connecting tube is provided between the two installation tubes, and a clamping assembly is provided on one side of each installation tube. The connecting tube is fixedly connected to the installation tube via the clamping assembly. This utility model employs the above structure, installing a baffle at the sealing cap. A HEPA filter and a filter screen are installed inside the baffle. The filter screen performs preliminary filtration of large particles in the air, and the HEPA filter efficiently filters out micron-sized particles, including most microorganisms. This significantly reduces the risk of microorganisms entering the culture flask and contaminating the cells, ensuring a sterile environment for cell culture, reducing cell death or mutation due to contamination, thereby improving the purity of the gas entering the flask and preventing harmful gases or impurities from affecting cell culture.

This utility model relates to the field of livestock breeding technology and provides an automatic water feeding device, including a box body containing a water storage chamber and a filter chamber; a water pump installed in the water storage chamber for drawing drinking water; a drain pipe fixed to the drain end of the water pump and extending to the outside of the box body for conveying drinking water; and a drinking plate detachably installed on the outer wall of the box body and extending into the filter chamber for receiving drinking water for cattle, with the drain end of the drain pipe located at the top of the drinking plate. The automatic water feeding device provided by this solution achieves automatic drinking water delivery, efficient filtration, water level monitoring and alarm, and convenient maintenance, ensuring clean water quality, improving breeding efficiency, and protecting the safety and health of cattle.

This application relates to the field of environmental monitoring equipment technology, and in particular to a gas emission filtration device for environmental monitoring, comprising a housing, a rotating filter assembly, a power assembly, and an impurity collection assembly. The housing has an air inlet and an air outlet. The rotating filter assembly contains multiple layers of concentric annular filter screens with gaps between the layers. The power assembly drives the filter screens to rotate. The impurity collection assembly is located below. Centrifugal blades are provided between adjacent filter screens to enhance impurity separation; a unidirectional flow assembly is provided at the air outlet to prevent gas backflow. The device increases the filtration area through multiple layers of filter screens, reduces clogging by rotating the filter screens, assists in impurity separation with centrifugal blades, and ensures unidirectional gas discharge through the unidirectional flow assembly. This device effectively solves the problems of easy clogging and low efficiency in existing filtration devices, achieving efficient and stable filtration, meeting environmental protection requirements, and is suitable for various gas emission scenarios.

The application discloses a dust suction device for metal polishing processing and belongs to the technical field of fan equipment, which comprises a pipeline, and a filter plate is arranged in the pipeline; a middle shaft is horizontally fixed on the filter plate, and both ends of the middle shaft are rotationally connected to the side wall of the pipeline; a partition plate is hingedly connected to one end of the filter plate close to an air outlet, and the other end of the partition plate is slidingly connected to the side wall of the pipeline; a closing plate is slidingly connected to the side wall of the pipeline, one end of the closing plate is fixed with a connecting rod, and the connecting rod is hingedly connected to one end of the partition plate away from the filter plate; under normal filtering state, the dust suction device utilizes the filter plate to efficiently filter the gas entering the pipeline, effectively intercepts the dust and impurities generated in the metal polishing process, and ensures the smooth discharge of clean gas. Meanwhile, the closing plate tightly closes the dust discharge port, effectively prevents the leakage of dust, and keeps the working environment clean.