180results about How to "Guaranteed purification effect" patented technology

The invention relates to the field of mine mining, and discloses a mine efficient mining intelligent ventilation system which comprises an intelligent monitoring module, the intelligent monitoring module is installed in a mine, environment information in the mine is collected, and the collected information is transmitted to a central control module; the intelligent monitoring module is connected with a central control module, and the central control module is the core of the whole system, receives parameter information transmitted by the intelligent monitoring module, and controls the ventilation equipment module to start according to the parameter information. According to the air purification module, various treatment modes including multi-stage filtration, oxygen supplement, catalytic oxidation, chemical spraying, adsorbent purification, catalytic combustion and the like are adopted for different harmful gases. Therefore, the system can effectively remove various pollutants in mine air, air quality is improved, and health and safety of workers are guaranteed.

The invention provides a hydraulic automatic fishway device, and relates to the technical field of hydraulic engineering, the hydraulic automatic fishway device comprises an arc fishway track, a multifunctional structure is rotatably mounted on the outer side of the arc fishway track, the multifunctional structure comprises a synchronous belt, a plurality of fish collecting plates are arranged on the surface of the synchronous belt, and each fish collecting plate is clamped with the synchronous belt; a fish collecting groove is formed in each fish collecting plate, a fish luring warm-color lamp strip is arranged in each fish collecting groove, through a multifunctional structure, when water flow impacts the water turbine from bottom to top, the water turbine rotates under the radial force of the water flow, so that radial force is generated on the fixing rod to rotate in the fixing frame, and meanwhile, the water flow impacts the water turbine through the water flow; the rotation of the fixing rod enables the driving bevel gear to rotate and to be engaged with the driven bevel gear, so that the driven bevel gear rotates, and then the rotating cross rod is controlled to drive the first gear to rotate and to be engaged with the inner tooth set, so that the synchronous belt can drive the fish collecting plate and the fish collecting groove to rotate, fish at the fishway inlet is brought to the upstream, and migration of the fish is helped.

The invention provides an edge sealing strip jet printing machine which comprises a support and a jet printing machine body, the support is provided with a conveying assembly, the conveying assembly comprises a first motor and a rotating roller, the support is provided with a protection assembly, the protection assembly comprises a box body and a gate plate, the support is provided with a stopping assembly, the stopping assembly comprises a pressing sleeve and a stopping roller, and the pressing sleeve and the stopping roller are arranged on the support. According to the edge sealing strip jet printing machine, an electric heating lamp and a fan can heat an edge sealing strip on the two sides of a blocking roller at first, then the edge sealing strip is cooled, the edge sealing strip is completely straightened in cooperation with the pulling force of the pulling roller, and therefore the edge sealing strip is completely straightened; the edge sealing strip spray printing device is simple in structure and convenient to use, unevenness such as wrinkles and curved surfaces on the edge sealing strip is eliminated, the edge sealing strip is effectively guaranteed to be completely flat, the quality of spray printing processing of the edge sealing strip is effectively guaranteed, ink volatile matter is prevented from drifting away, environment safety is guaranteed, and the edge sealing strip spray printing device is suitable for spray printing processing of the edge sealing strip.

The invention discloses an environment-friendly construction dust suppression device and method, and relates to the technical field of environment-friendly construction. According to the environment-friendly construction dust suppression device, through the design of a composite mechanism, a suction fan is inserted into the outer side of an external connection disc, so that disassembly and assembly are facilitated, follow-up replacement and maintenance are facilitated, the suction fan is started, wind enters from the side, close to a flowing pipe, of the inner wall of a composite shell and flows towards the side of the suction fan, and therefore dust and smell on a site are absorbed; the situation that the site environment is too severe, personnel safety is affected, potential safety hazards are reduced, the flowing pipe is of a structure with the two wide ends and the middle narrow and small, according to the Bernoulli principle, the diameter of the pipeline is reduced, the flowing speed of gas is increased, and therefore the operation effect is improved, and the cleaning efficiency of the construction site is improved; dust and air flow enter the composite shell, harmful gas of the air flow is filtered and purified through the filtering mechanism, and therefore normal operation of equipment is kept.

The present invention provides an industrial air purification device, which relates to the technical field of industrial waste gas purification, and comprises: a pretreatment unit; a driving unit is installed on the pretreatment unit; a pushing unit is installed inside the pretreatment unit; a cleaning unit is installed on the pretreatment unit; a purification unit is installed on the top of the pretreatment unit; a supporting unit is installed on the pretreatment unit and the purification unit; a through groove and a groove are provided at the bottom of the pretreatment shell, and the through groove and the groove are the same size, and the through groove and the groove are vertically arranged; the pretreatment filter is welded to the inside of the pretreatment shell, and filtering micropores are provided on the pretreatment filter; the present invention can automatically match the rotation speed of the motor according to the purification resistance of the air, and reduce the loss of electric energy under the premise of ensuring the air purification effect; and solves the problem that the appropriate rotation speed of the motor cannot be automatically matched according to the thickness of the purification material, thereby increasing the loss of electric energy.

The utility model relates to the technical field of waste gas treatment, in particular to a waste gas treatment device for chemical production, which comprises a base, a smoke exhaust pipe, at least two layers of mounting cylinders, a water cylinder, a visible bin, a filler layer component, a pull rope and a spraying component, the water cylinder is connected onto the base, an air inlet is arranged on the outer wall of the water cylinder, and the water cylinder is connected with the visible bin. A smoke exhaust pipe is connected to the uppermost mounting cylinder, visual bins are detachably connected to the outer walls of the mounting cylinders, packing layer assemblies, pull ropes and spraying assemblies are connected to the interiors of the mounting cylinders, and the pull ropes are connected with the packing layer assemblies. The visible bin, the packing layer assembly and the pull rope are arranged, the packing layer net rack is observed through the visible bin, when scales on the packing layer net rack need to be cleaned, after the visible bin is opened, the pull rope is pulled to move the packing layer assembly upwards to be close to the visible bin, and then the packing layer net rack is cleaned or replaced, so that the operation is simple and convenient; the purification effect of the waste gas treatment device is ensured.

The utility model discloses organic silicon resin purification production equipment which comprises a tank body, a liquid outlet pipe is arranged on one side of the tank body, a plurality of first stand columns are arranged at the top end of the tank body, a same top plate is arranged at the top ends of the first stand columns, a motor is arranged on the top plate, and an L-shaped connecting plate is arranged at the bottom end of the top plate. The second bevel gear is driven by the motor to rotate, so that the connecting shaft drives the spiral auger to rotate in the separation tank, and through meshing of the first bevel gear, a third bevel gear drives the separation tank to rotate through connection of the connecting pipe, the connecting disc and the second stand column. According to the organic silicon resin centrifugal separation device, organic silicon resin conveyed by the liquid inlet pipe is subjected to centrifugal separation, the spiral auger is rotated to scrape off impurities attached to the separation membrane, and meanwhile the impurities are conveyed from bottom to top, so that the purification effect of the separation membrane is guaranteed, and meanwhile, the impurities in the separation tank are removed.

The utility model provides a detachable and washable air purifier which comprises a shell provided with a containing cavity and an air outlet. The motor is arranged in the containing cavity and connected with the shell, and the motor is provided with an output shaft; the wind wheel body is arranged in the containing cavity, a rotating hole is formed in the wind wheel body, the output shaft can be inserted into the rotating hole so that the motor can drive the wind wheel body to rotate, and the wind wheel body can be taken out from the air outlet; the wind wheel cover is arranged in the containing cavity, the wind wheel cover can make contact with the shell so as to cover the wind wheel body, the wind wheel body is located between the motor and the wind wheel cover, and the wind wheel cover can be taken out from the air outlet; and the interaction panel is arranged in the containing cavity and located at the air outlet, and the interaction panel can be taken out from the air outlet. According to the air purifier, the internal structure of the air purifier is regularly cleaned, and the purification effect of the air purifier is guaranteed.

The invention relates to the technical field of flue gas purification, in particular to glass fiber preparation electric furnace flue gas transferring and discharging equipment which comprises a transferring and discharging cylinder, a spraying unit, a dust removal unit and a purification unit. According to the invention, the following problems in the flue gas treatment process in the prior art can be solved: only particulate dust in the flue gas can be removed, and volatile substances and harmful gases cannot be filtered out, so that the treated flue gas still pollutes the environment; when flue gas enters the purification tower, dust in the flue gas cannot quickly precipitate downwards and is easy to fly, so that the environment is polluted, and the health and safety of workers are influenced; according to the flue gas purification device, flue gas can be sequentially subjected to spraying, dust removal filtering and adsorption purification through the spraying unit, the dust removal unit and the purification unit, so that dust, particulate matters, volatile substances and other harmful gases in the flue gas can be effectively removed, and the flue gas purification effect is ensured; and by adopting a spraying mode, raised dust generated in the purification process of the flue gas can be reduced.

The present invention provides a device and method for treating a water body, comprising a membrane biological reaction cylinder, on which a plurality of membrane biological reaction units are arranged in an annular array, and the plurality of membrane biological reaction units are connected with the inside of the membrane biological reaction cylinder through water inlet holes arranged at the connection of the membrane biological reaction cylinder, the purification cylinder body is formed by a pair of water inlet ducts and a pair of arc plates fixedly welded, the plurality of combing aeration rods are respectively connected with corresponding aeration cylinders through air channels arranged inside the arc plates, the ends of the telescopic rods away from the pistons are movably sleeved on the camshafts, and combing gaps are formed between the plurality of L-shaped connecting rods, the membrane biological reaction units of the present invention are in a rotating state, and cooperate with the direct aeration and combing of the combing aeration rods, thereby increasing the probability of combining biofilm fillers with oxygen, effectively preventing particulate matter from adhering to MBR hollow fiber filaments, and thus ensuring the purification efficiency of the membrane biological reaction unit.

The present invention relates to the field of rare metal smelting, and specifically discloses a method and device for preparing high-purity indium through multi-unit series multi-stage electrolytic refining, comprising a pre-electrolysis liquid storage tank, an electrolytic tank, a post-electrolysis liquid storage tank, and a first circulation pump connected through a pipeline and a U-shaped groove to form an electrolytic refining circulation system, and the electrolytic tank is used to perform the four steps of primary electrolysis, vacuum distillation, secondary electrolysis, and single crystal growth to prepare high-purity indium with good quality consistency and a purity of 8N, thereby providing a technical basis and material basis for the preparation of high-end indium phosphide material products in my country.

The utility model provides an ecological floating island vegetation anti-falling device, which belongs to the technical field of water pollution control, and comprises a bearing mechanism, a bearing frame, a planting component arranged in an inner cavity of the bearing frame, and a thread bushing fixedly mounted at the top of the bearing frame; the adjusting mechanism comprises a movable box movably clamped in the inner cavity of the planting assembly and a supporting bottom plate fixedly mounted at the bottom of the movable box. Self-adaptive fixing of vegetation is achieved through the self-adaptive adjusting assembly, the position of the upper-layer protective net can be automatically adjusted according to the actual weight and height of the vegetation and the actual height of a matrix through self-adaptive adjustment, the upper-layer protective net tightly covers the vegetation, shaking and upward growth space of the vegetation are limited, and the vegetation is prevented from falling off. The vegetation is effectively prevented from falling off due to factors such as water flow impact, stormy wave action and self-growth characteristics, the landscape effect of the ecological floating island and the water purification capacity are guaranteed, and the ecological floating island can stably play a role in water pollution treatment.

The invention discloses an absorbent for fine desulfurization and decarburization of blast furnace gas, and relates to the technical field of desulfurization and decarburization of blast furnace gas. The phase-splitting agent comprises a phase-splitting agent, an alcohol amine chemical absorbent and water, the phase-splitting agent is sulfolane, and the alcohol amine chemical absorbent is diethanol amine; wherein the mass fraction of sulfolane accounts for 50-70%, the mass fraction of diethanol amine accounts for 15-25%, the balance is water, and the sum of the mass fraction percentages of the components is 100%. According to the invention, a two-phase absorbent is innovatively adopted, and the absorbent aims to overcome the limitation of a traditional absorbent and realize the function of fine desulfurization cooperating with carbon capture; the invention further relates to a blast furnace gas fine desulfurization and decarbonization combined device and a using method thereof.

The utility model discloses an air pipe for capturing and purifying smoke particles, relates to the technical field of air pipes, and aims to solve the problems that the existing air pipe cannot capture and collect dust and particles passing through the air pipe, so that the smoke particles generated in the industrial production process are inconvenient to filter and clean, and the air pipe is inconvenient to clean. According to the technical scheme, the air duct cleaning device is characterized by comprising an air duct body, one side of the air duct body is fixedly connected with an insertion frame body, and the other side of the air duct body is fixedly connected with a clamping frame body matched with the insertion frame body; a mounting frame body is detachably connected to the interior of the air pipe body, a fixed frame body is fixedly connected to the inner wall of the mounting frame body, a mounting groove is formed in the fixed frame body, a filter screen used for capturing and filtering smoke particles is detachably connected to the interior of the mounting groove, and the effects of sealed mounting, smoke particle capturing and purifying and convenient cleaning are achieved.

The invention discloses air purification equipment for efficient photocatalytic degradation of volatile organic compounds in the technical field of air purification, which comprises a shell, a controller is embedded in the top end of the shell, an air inlet cavity and an air outlet cavity are formed in the shell from bottom to top, an air inlet and an air outlet are formed in the surface of the shell, and concentration sensors are mounted on the inner walls of the air inlet and the air outlet. A catalytic channel is arranged in the shell, a plurality of ultraviolet lamps are installed on the inner wall of the catalytic channel, a visible light assembly is installed on the top of the shell, a filtering assembly is installed in the air outlet cavity, an air inlet fan is installed in the air inlet cavity, and a driving assembly is installed in the shell. And the controller is used for receiving the indoor light intensity data and the harmful gas concentration data, performing linkage analysis on the two data and adjusting output parameters of the ultraviolet lamp. According to the invention, the output power of the ultraviolet lamp is automatically and conveniently adjusted according to the harmful gas concentration and the indoor light intensity, so that the real-time purification rate of the equipment is controlled, and the energy consumption is reduced while the air is effectively purified.

This invention relates to the field of wastewater treatment technology, and in particular to a wastewater purification and reuse device based on a membrane bioreactor. Addressing the limited removal efficiency of pollutants adhering to membrane elements in existing technologies, this invention provides a wastewater purification and reuse device based on a membrane bioreactor. The device includes a treatment tank containing a membrane bioreactor assembly. The assembly includes an assembly frame with multiple membrane elements mounted on it. Scrapers that cooperate with the membrane elements are located on both sides of a horizontal plate. A cleaning assembly also includes a vertically movable frame. When the frame moves downwards, the horizontal plate moves downwards, and the scrapers clean the outer surface of the membrane elements downwards. A movable scraper is located on a support, and a collection box is located on one side of the support. When the scraper moves to one side, the collection box opens. By directly scraping away impurities adhering to the outer surface of the membrane elements, suspended solids, colloidal particles, microbial flocs, and other pollutants on the membrane surface can be removed quickly and effectively.

The invention belongs to the field of virus purification, and particularly relates to a foot-and-mouth disease virus plaque purification method and a foot-and-mouth disease virus thereof. The high-quality foot-and-mouth disease virus is obtained by screening and purifying the foot-and-mouth disease virus through a specific 1 * cell culture medium, a 2 * cell culture medium, a cell maintenance medium and a culture solution which are prepared by the method and through a virus plaque purification technology. The seed virus screening and purifying method is low in cost, the problems that an existing seed virus screening method is high in cost, complex in operation and the like are solved, and high-quality foot and mouth disease viruses can be obtained through virus plaque purification. According to the method, the virus titer of the conventional foot-and-mouth disease virus seed virus is increased by more than 3 times, and the content of antigen 146S is increased by 40%.

The utility model is applicable to the technical field of wastewater treatment, and provides a steel industry wastewater treatment dosing device which comprises a wastewater conveying pipeline and a dosing component mounted on the wastewater conveying pipeline, the dosing component comprises a dosing pipeline, the dosing pipeline is fixedly mounted on the upper surface of the wastewater conveying pipeline, and the dosing pipeline is connected with the wastewater conveying pipeline. The upper end of the dosing pipeline is fixedly provided with a dosing hopper, the dosing pipeline is communicated with the interior of the dosing hopper, the top wall of the dosing hopper is rotationally connected with a rotating shaft, the lower end of the rotating shaft extends into the wastewater conveying pipeline through the dosing pipeline, and the outer surface of the rotating shaft is fixedly sleeved with an auger blade; the outer surface of the auger blade is in contact with the inner wall of the dosing pipeline, the mode that the auger blade is used for conveying the flocculant is adopted, the input amount of the flocculant can be accurately controlled, manual control and monitoring are not needed, and the working intensity of workers and the operation difficulty are reduced.

According to the technical scheme, the air circulation freshening device for pepper processing comprises a moving trolley and a neutralizing box, the neutralizing box is installed in the middle of the top of the moving trolley, a processing box is installed on the side, close to the neutralizing box, of the top of the moving trolley, and a fan is installed on the side, close to the neutralizing box, of the bottom of the moving trolley. A filter screen is mounted on the side, close to the neutralization box, in the treatment box, an activated carbon adsorption net is mounted on the side, away from the filter screen, in the treatment box, and a supporting seat is mounted on the side, close to the fan, of the top of the moving vehicle. An air circulation freshening device for chili processing solves the problems that when an existing air circulation freshening device purifies air, capsaicin for chili processing is treated mainly through activated carbon, the adsorption performance of the activated carbon is poor, and the air freshening effect of the chili processing environment is affected. The peculiar smell treatment effect during chili processing is improved, so that the air freshening effect of a chili processing environment is ensured.

The application relates to the technical field of sewage treatment, and discloses a sewage treatment ecological box based on Myriophyllum verticillatum, which comprises a container body, the inner cavity right side of the container body is sequentially provided with a first treatment box, a second treatment box and a third treatment box from top to bottom, further comprises a circulating assembly arranged between the first treatment box, the second treatment box and the third treatment box, an algae removing assembly arranged on the front and back end faces of the first treatment box, the second treatment box and the third treatment box, and a fertilization assembly. The sewage can be sequentially injected into the first treatment box, the second treatment box and the third treatment box through the arrangement of the circulating assembly, and the Myriophyllum verticillatum is planted in the first treatment box, the second treatment box and the third treatment box, so that the organic matter in the sewage can be absorbed, the function of treating the sewage is realized, the algae removing assembly and the fertilization assembly are arranged, the growth of the Myriophyllum verticillatum can be ensured, and the sewage can be efficiently purified and treated.

The invention discloses a multi-parameter intelligent adjustment energy efficiency management method and system for biogas purification, and belongs to the technical field of biogas purification. The method comprises the following steps: acquiring hydrogen sulfide concentration, carbon dioxide concentration and gas moisture content data, constructing an impurity parameter set based on historical sampling data, and calculating upper and lower envelope boundaries of each parameter to form an impurity parameter envelope boundary combination; calculating to obtain a comprehensive impurity fluctuation intensity index through the envelope width, and adding a fluctuation intensity label; and acquiring the accumulated regeneration times, adsorption efficiency and residual saturation of the adsorbent from a system background, calculating the health degree of the adsorbent, and distributing a health degree label. The intelligent regulation strategy table is constructed, and the corresponding regulation strategy is selected according to the real-time working condition, so that the dynamic energy efficiency management of the biogas purification process is realized, the pertinence and the stability of the regulation decision are improved, the system energy consumption is reduced while the purification effect is ensured, and the engineering application value is good.

The utility model relates to waste gas treatment device technical field, specifically is a kind of waste gas treatment device for pressure-sensitive adhesive production, including purification device, two placement frame 5 are rotatably connected on purification device, placement frame 5 is fixed by limiting structure, stirring structure is further equipped on purification device, the stirring rod of stirring structure is rotatably connected with placement frame 5, by the stirring rod rotation, make stirring rod to carry out stirring to the activated carbon in placement frame 5, can effectively prevent its local area adsorption saturation, active carbon can be contacted with waste gas simultaneously, continuously renewing adsorption surface, improve adsorption efficiency, stirring can also shake off the dust accumulated on the surface of activated carbon, avoid pore blockage, keep its adsorption activity.

The utility model relates to the technical field of environment detection, and discloses a toxic environment detection alarm mechanism which comprises a box body, a detection bin is arranged in the box body, the top of the detection bin is communicated with an air inlet pipe, one side of the detection bin is communicated with an exhaust pipe, and a detection assembly is arranged at the bottom of the detection bin and used for detecting toxic gas in air and giving an alarm. A purification mechanism used in cooperation with the exhaust pipe is arranged in the box body and used for filtering poisonous gas. When poisonous gas is detected through the poisonous gas detection sensor, a signal is fed back to the single-chip microcomputer, the single-chip microcomputer controls the buzzer to give an alarm, meanwhile, the single-chip microcomputer controls the stepping motor to rotate by one step pitch, the transmission assembly drives the rotary disc to rotate by one step pitch, a new activated carbon plate is replaced into the exhaust pipe, and the purification effect is guaranteed; according to the design, poisonous gas can be detected, meanwhile, an alarm is given, purification is conducted, the surrounding working environment is protected, and meanwhile safety is improved.

The utility model relates to the technical field of waste gas purification treatment, in particular to a silane and chlorosilane waste gas treatment device which comprises a filter box, an induced draft fan and a purification tower, a gas outlet of the filter box is communicated with a gas inlet of the purification tower through the induced draft fan, and the filter box comprises a box body, a filter plate, a cleaning brush and a turning assembly. The box body is of a hollow cylinder structure and is transversely placed, the multiple filter plates are transversely arranged in the box body at intervals, the filter plates are rotationally installed in annular grooves formed in the inner wall of the box body, the cleaning brushes are arranged on the left sides of the filter plates, the top ends of the cleaning brushes are connected with the inner wall of the box body, and the turning assembly is arranged at the top end of the box body; the plurality of filter plates are driven to rotate synchronously; the filter plate is simple in structural design, and impurities and particles attached to the surface of the filter plate can be cleaned and collected.

This invention provides a method for preparing tensile specimens of CoFeNi medium-entropy alloy under deep supercooling conditions. The deep supercooling process of this method is carried out using a high-frequency induction heating device and a combination of melt immersion and cyclic superheating. During the melting process, the alloy raw materials are placed sequentially in a quartz crucible from bottom to top according to their melting points, with glass cleaning agents added to the bottom and top layers. During melting, the vertical movement of the quartz crucible along the central axis of the high-frequency induction coil and the heating temperature of the high-frequency induction coil are controlled to sequentially melt and coat the alloy surface with the glass cleaning agent, melt the Ni metal raw material, and melt the remaining metal raw materials. After the alloy liquid is thoroughly mixed, it is cooled and solidified. This heating and cooling solidification process is repeated until a supercooling of 205K is achieved, producing a CoFeNi medium-entropy alloy ingot that meets the dimensions required for tensile testing. This invention features an easily controllable solidification process, mature technology, and minimal component loss.

The present application provides a kind of waste gas treatment system of asphalt pre-mixing equipment, it is related to industrial waste gas treatment field, including: cyclone separator body, the top of the air outlet cylinder in the middle of cyclone separator body is fixedly connected with adsorption cylinder, the air inlet of one side of cyclone separator body is fixedly connected with corrugated gas guide pipe, and the discharge port of the bottom of cyclone separator body is fixedly installed with dust collection box;Pollution collection component, the pollution collection component includes the pollution collection box that is fixedly connected between cyclone separator body and spray tower;Adsorption component, the adsorption component includes the activated carbon placement box that is arranged in adsorption cylinder interior and is provided with through-hole setting at bottom portion.The linkage mechanism of multiple components: activated carbon replacement process triggers dust collection cavity cleaning, particle dirt collection and spray tower waste liquid collection simultaneously, reduces independent operation step;Pollution collection box is divided into two chambers by partition, respectively collects particle dirt and waste liquid, avoids secondary pollution caused by mixed treatment, and subsequent dirt disposal is more convenient.

The utility model discloses an ecological indoor air purification device, and relates to the technical field of indoor air purification. The technical problem that an existing indoor air purification device is difficult to achieve ecological purification and meanwhile consumables are reduced is solved. According to the technical scheme, the ecological indoor air purification device comprises an air purification device body and further comprises a limiting frame, a transparent glass cover, an air outlet, a maintenance assembly, a receptacle, an air supply assembly and an auxiliary assembly; according to the ecological indoor air purification device, automatic irrigation can be provided through the maintenance assembly so as to help green plants to keep a good growth state, indoor air can be conveniently guided to the position near the green plants through the air supply assembly, air purification can be further achieved through the auxiliary assembly, and compared with a traditional purification mode, the ecological indoor air purification device has the advantages of being convenient to use. The device adopts a natural biological purification mode of green plants to improve the indoor air quality, not only has an ornamental value, but also realizes ecological cyclic utilization and effectively reduces the filter material cost at the same time.

The invention relates to the technical field of gas purification, in particular to a self-purification type filtering unit based on the synergistic effect of low-temperature plasma and a catalyst, which comprises a shell and further comprises a plasma generator, a filter element, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe and a gas outlet pipe, the purification control unit is arranged on the outer wall of the shell and is used for controlling the air inlet flow of the self-purification type filtering unit; according to the self-purification type filtering unit based on the synergistic effect of the low-temperature plasma and the catalyst, the gas inlet flow is predicted according to the gas pollution coefficient, the external environment temperature and humidity and the electron density and the electron temperature of the plasma, and the gas inlet flow in the reaction chamber is collected in real time; and the real-time air inlet flow and the predicted air inlet flow are compared and analyzed to generate an adjustment and maintenance instruction, so that the purification effect of the self-purification type filtering unit based on the synergistic effect of the low-temperature plasma and the catalyst is ensured.

The invention discloses a cleaning barrel for a large thin-wall wax mold, and belongs to the technical field of investment casting equipment. The technical problem that when an existing cleaning device is used for cleaning a large thin-wall wax mold, the wax mold is prone to fragmentation or deformation is solved. The cleaning barrel for the large thin-wall wax mould comprises a cleaning barrel body, a filtering device and a circulating device, the cleaning barrel body comprises a main barrel body and an auxiliary barrel body; the bottoms of the main barrel body and the auxiliary barrel body are connected through a circulating device, and an overflow port is formed in the interface of the upper ends of the main barrel body and the auxiliary barrel body; the filtering device is arranged above the auxiliary barrel body and is positioned at the overflow port; cleaning liquid in the main barrel body flows into the filtering device through the overflow opening, and flows into the auxiliary barrel body after being filtered. According to the wax mold cleaning device, efficient and high-quality automatic flexible cleaning of the wax mold can be achieved, and fragmentation or deformation of the wax mold is avoided.

The present invention discloses a dust recovery device for powder coating production and a recovery process thereof, which relates to the technical field of dust recovery, and includes a base and a dust suction mechanism and a recovery mechanism arranged above the base. The dust suction mechanism includes a main pipeline, an air outlet pipe, an exhaust fan and a filter assembly. The main pipeline is arranged above the base, and one end of the main pipeline is an opening, and the other end of the main pipeline is provided with an air outlet pipe. The exhaust fan is arranged at one end of the air outlet pipe, and a filter assembly is arranged inside the main pipeline; the filter assembly is rotatably arranged inside the main pipeline. The present invention aims to improve the problems in the prior art that in the production of powder coatings, the workshop air contains a lot of dust, which affects the health of the workers, and the dust is emitted in the air and causes waste. The present invention has the advantages of filtering and purifying the air containing dust through the filter assembly, and the filtered dust can be automatically recovered and stored through the recovery mechanism.