71results about How to "Avoid direct discharge" patented technology

The invention provides a comprehensive resource utilization method for livestock and poultry manure, and relates to the technical field of environmental protection. The comprehensive resource utilization method for the livestock and poultry manure comprises the following steps: collection and pretreatment: collecting the manure generated in a livestock and poultry farm, carrying out solid-liquid separation on the collected manure, carrying out composting treatment on the solid part at the separation part, and carrying out anaerobic fermentation treatment on the liquid part; composting treatment: mixing the separated solid feces with straws and saw dust in proportion, and adjusting the carbon nitrogen ratio to (25-30): 1; in the composting process, the pile is turned regularly, the temperature of the pile body is kept at 55-65 DEG C, the humidity is controlled at 50%-60%, the composting period is 30-45 days, and finally the organic fertilizer is obtained. Through multistage treatment processes such as solid-liquid separation, composting and anaerobic fermentation, the maximum utilization of resources is realized, the generated organic fertilizer can replace part of chemical fertilizers and biogas to be used for power generation, heat supply or fuel, the biogas slurry fertilizer can be used for farmland irrigation or fertilization, and the cyclic utilization of the resources is realized.

The utility model discloses a waste gas purification treatment tower in the field of waste gas treatment equipment, which comprises a first box body, a second box body, a waste gas purification treatment tower body and a third box body, the waste gas purification treatment tower body is fixedly connected to the middle of the top of the first box body, the third box body is fixedly connected to the lower side of the left side wall of the waste gas purification treatment tower body, a gas conveying pipe is inserted into the upper side of the left side wall of the first box body, and a sleeve shell is fixedly connected to the right side of the top of an inner cavity of the first box body; the right side of the top of the inner cavity of the first box body is fixedly connected with a shell, and the shell is located in the inner cavity of the sleeve shell, the waste gas purification treatment tower facilitates circulating purification of unqualified waste gas after detection, the unqualified waste gas is prevented from being directly discharged, the use efficiency of the waste gas purification treatment tower is improved, liquid medicine is convenient to recycle, and the waste gas purification treatment tower is convenient to use. And water resource waste is avoided, and use is convenient.

The invention relates to the technical field of waste gas treatment, and particularly discloses an organic waste gas recovery treatment system and method.The organic waste gas recovery treatment system comprises a buffer tank, a condensation system, a PSA adsorption system and a treatment system, the condensation system comprises an induced draft fan and a condensing unit, and a first inlet of the buffer tank is connected with a sample introduction pipeline; a first outlet of the buffer tank is connected with a first inlet pipeline of the condensing unit, an induced draft fan is arranged in a pipeline for connecting the buffer tank and the condensing unit, and a pressure transmitter is arranged on an inlet pipeline of the induced draft fan; the PSA adsorption system comprises a first activated carbon canister, a second activated carbon canister and a vacuum pump, and the treatment system comprises a gas mixer, a fan, a heat accumulating type oxidation furnace, a mixer and a bypass valve. According to the invention, the organic waste gas can be efficiently treated, the organic waste gas can be recycled to the greatest extent, the resource waste is reduced, the adsorbent replacement frequency, the plugging risk and the operation load of subsequent equipment are reduced, the cost is saved, and the economic efficiency is improved.

The present invention relates to the technical field of drying devices, and specifically to a drying device and a drying method for composite fabric production, comprising a high-efficiency quick-drying device installed inside a drying box, the high-efficiency quick-drying device comprising a laminating spraying and pressing device, a laminating suction device, a reflux dehumidification device, a heating device and a synchronous clamping device, the synchronous clamping device being installed on the drying box, the laminating spraying and pressing device and the laminating suction device being symmetrically installed on the synchronous clamping device, the reflux dehumidification device being arranged above the laminating suction device, the input end of the reflux dehumidification device being connected to the output end of the laminating suction device, the reflux dehumidification device being used for filtering and recovering heated gas, the heating device being arranged beside the reflux dehumidification device, the input end of the heating device being connected to the output end of the reflux dehumidification device, the output end of the heating device being connected to the input end of the laminating spraying and pressing device, the present invention can effectively save energy consumption and reduce costs, while improving drying efficiency and drying quality.

The amino acid vacuum concentration and extraction device comprises an evaporation box, the bottom of the evaporation box is fixedly connected with a driving motor, the top of the evaporation box is provided with a cover body, one side of the evaporation box is provided with an opening, a conveying pipe is inserted into the opening, and the outer wall of the conveying pipe is fixedly connected with a rubber ring. The outer wall of the rubber ring is fixedly connected with the inner wall of an opening in one side of the evaporation box, a vibration pump is arranged on the bottom side of the conveying pipe, a stirrer is rotationally connected into the evaporation box, one end of the stirrer is connected with a shaft of a driving motor, and a collecting assembly is arranged on one side of the evaporation box. The collecting assembly comprises a shell, a cooling chamber and a collecting chamber are arranged in the shell, the cooling chamber is connected with the evaporation box, and a water inlet pipe and a water outlet pipe are arranged on one side of the cooling chamber. According to the device, the evaporation and concentration efficiency of materials can be improved, meanwhile, generated steam can be collected, and pollution and waste caused by direct discharge of the steam are avoided.

The invention belongs to the field of preparation of high-end carbon materials, and relates to a method for desulfurizing high-sulfur petroleum coke. The core of the invention is to construct a'desulfurization-acidification-regeneration 'three-step closed cycle system. The system takes magnesium oxide as a circulating medium, firstly magnesium oxide reacts with sulfur in petroleum coke at a high temperature to be converted into magnesium sulfide, then sulfur is released and recovered through an acidification step, meanwhile magnesium is converted into an intermediate product magnesium hydroxide, and finally, the magnesium medium is recovered to be active through a thermal regeneration step, magnesium oxide is obtained, and circulation is completed.

The invention relates to the technical field of biological teaching equipment, and particularly discloses biological armadillidiam vulgare experiment teaching equipment which is technically characterized by comprising an experiment box, two parallel partition plates are arranged in the experiment box at intervals, and the two partition plates divide the experiment box into a first experiment bin, a second experiment bin and a third experiment bin; the first experiment bin and the third experiment bin are completely the same in structural size and are symmetrically arranged relative to the second experiment bin; the two partition plates are provided with channels, and the second experiment bin is communicated with the first experiment bin and the third experiment bin through the channels. Cover bodies are arranged at the tops of the first experiment cabin and the third experiment cabin. According to the invention, the armadillidiam vulgare can select a suitable living environment, so that the operation is simple, the observation is convenient, no harm is caused to the armadillidiam vulgare, and the experimental subject can be reused.

The utility model relates to an automatic slag discharging device for metallurgical slag, and aims to solve the problems that the slag cooling efficiency is low and the slag discharging process is not environment-friendly. The device comprises an L-shaped cooling pipe with a bent bottom, wherein the upper section of the L-shaped cooling pipe is communicated with a slag discharge port of the metallurgical furnace; the circulating cooling part is arranged on the cooling pipe and is used for cooling slag; the dispersing part comprises a rotating power mechanism, a rotating shaft and a dispersing plate, dispersing holes are densely distributed in the dispersing plate, the dispersing plate is located below the slag discharging opening, the rotating shaft is driven by the rotating power mechanism to rotate, slag is discharged from the dispersing holes under the action of gravity and centrifugal force and dispersed into particles, and rapid cooling and subsequent recycling treatment are facilitated; the blades are arranged on the rotating shaft and located above the slag discharging opening, and the blades rotate synchronously when the rotating shaft rotates; one end of the waste gas discharge pipe is communicated with the top of the cooling pipe, and the other end is connected with a waste gas treatment system for discharging and treating waste gas generated by slag cooling. According to the utility model, the slag cooling efficiency is improved, and the slag discharging process is more environment-friendly.

The utility model relates to the technical field of air inducing covers, and discloses an air inducing cover device which comprises a material storage tank, the surface of the material storage tank is fixedly connected with a feeding pipe, the top of the material storage tank is fixedly connected with an air inducing assembly, and the output end of the air inducing assembly is fixedly provided with a tail gas absorbing assembly. The air inducing assembly comprises a connecting pipe, the top of the connecting pipe is fixedly connected with a breather valve through a bolt, and the surface of the breather valve is sleeved with an annular semi-sealing cover. The annular semi-sealing plate is arranged, the induced draft fan body is started, the induced draft fan body sucks gas which enters the breather valve through the connecting pipe and is exhausted into the adapter pipe through the annular semi-sealing cover, and then the gas enters an induced draft fan pipeline through the adapter pipe; and the output end of the induced draft fan body discharges the gas in the induced draft fan pipeline into the tail gas absorption assembly to be collected, so that the situation that in the feeding process, the gas in the storage tank is directly discharged, and the environmental protection does not reach the standard is avoided.

The present disclosure provides a tobacco leaf conditioning system and a gas circulation method. The tobacco leaf conditioning system includes two warehouses (10) for storing tobacco stacks (100), at least two air bags (20) arranged in the two warehouses (10), the air bags (20) having an inflation state and a deflation state, a first gas transmission part in communication with the two warehouses (10) and configured to provide nitrogen and / or transfer nitrogen between the two warehouses (10), and a second gas transmission part in communication with the at least two air bags (20) and configured to transfer air between the air bags (20) located in the two warehouses (10).

The utility model relates to the technical field of graphene coating processing, and provides a graphene coating processing device in order to overcome the defects that in the prior art, emission of volatile matter cannot be effectively controlled, and the surrounding environment is harmed, the graphene coating processing device comprises an equipment box, and limiting blocks are installed on the surfaces of the corners of the periphery in the equipment box in a sliding mode. A plurality of limiting blocks are arranged in the middle of the top of the equipment box, an annular pipe is installed between the limiting blocks, a plurality of gas spraying holes are formed in the surface of the annular pipe, and a purification box is fixedly installed in the middle of the top of the equipment box. And the air is pumped into the equipment box for recycling through the three-way valve by the air blower, so that the energy utilization rate of the equipment is improved, direct emission of harmful gas is avoided, and the concept of environment-friendly production is realized.

The automobile radiator convenient to clean comprises a base and a radiator body, a fixing frame is fixedly connected to the top of the base, a collecting component is arranged at the top of the base, and a connecting component is arranged between the radiator body and the base. The collecting part comprises a collecting box fixedly connected with the top of the base, an inserting opening formed in the top of the collecting box, a filtering plate connected with the inserting opening, a fan fixedly connected with one side of the top of the collecting box, an air suction pipe fixedly connected with one side of the fan and a hose connected with one side of the top of the collecting box. Through the arrangement of the base, the radiator body, the fixing frame and the collecting component, the problems that when an existing automobile radiator is used, although the automobile radiator can be cleaned, the cleaning mode is relatively single, the cleaning effect becomes poor, dirt such as batting after cleaning is directly discharged, impurities are not collected and treated, and the cleaning effect is poor are solved. And therefore, the practicability becomes poor.

The application discloses an ecological protection type river and lake construction water supply treatment equipment and relates to the technical field of water supply treatment. The treatment installation is provided with a water supply device, a layered control member, a secondary disinfection member, a lifting isolation member, a rotary cutting control member and an environmental protection control member. The environmental protection control member can be used for limiting the particle size of the flocculation and precipitation impurities during the discharge of the flocculation and precipitation impurities, avoiding the direct discharge of the agglomerated and blocked impurities, and solving the problems that the current river and lake construction water supply treatment equipment is inconvenient for the discharge of flocculation and precipitation and is inconvenient for the layered water taking.

The air purification device for the pet box comprises a box body located on a box body and a box cover arranged on the top of the box body in a covering mode, a partition plate is arranged in the box body and divides the interior of the box body into an installation cavity and a reaction cavity used for containing biological enzyme mixed liquid, a power source and a vacuum pump are arranged in the installation cavity, and the power source and the vacuum pump are arranged in the reaction cavity. The vacuum pump is communicated with the interior of the box body through an exhaust pipe and communicated with the reaction cavity through an exhaust pipe, a plurality of exhaust holes communicated with the reaction cavity are formed in the box cover, and the vacuum pump extracts foul gas in the box body through the exhaust pipe and discharges the foul gas into the reaction cavity through the exhaust pipe. The biological enzyme mixed liquid in the reaction cavity decomposes pollutants in the foul gas, and the purified gas is discharged through the exhaust hole. According to the air purification device for the pet box, foul air in the box body is pumped out by the vacuum pump through the exhaust pipe, the foul air is discharged into the reaction cavity through the exhaust pipe, pollutants in the foul air are decomposed by biological enzyme mixed liquid in the reaction cavity, and purified air is discharged through the exhaust hole.

The invention discloses an air box pulse bag type dust collector with low emission concentration, and relates to the technical field of dust collectors. According to the technical scheme, the low-emission-concentration air box pulse bag type dust collector comprises a supporting assembly, a device body is arranged at the top of the supporting assembly, an input pipe is arranged on the left side of the device body, a discharging assembly is arranged at the bottom of the device body, and a fan exhaust assembly is arranged on the right side of the device body; a pulse valve assembly is arranged on the top left side of the device body. The movement range and the heat radiation range of the heating assembly are effectively expanded, a relatively sealed space is formed when the arc-shaped guide plate makes contact with the V-shaped plate, dust-containing gas is covered and guided, and therefore the dust-containing gas is promoted to approach the movement direction of the heating assembly, the gas drying rate is increased, and the drying efficiency is improved. And the dust is prevented from being adhered to the filter bag assembly due to humidity and is difficult to remove.

The utility model relates to the field of filling machines, and discloses an instant food filling machine. The instant food filling machine comprises an equipment body, a carrying plate is fixedly connected to the upper end of the equipment body, a collecting bin is arranged in the equipment body, a plurality of rectangular plates are fixedly connected to the interior of the collecting bin, and a plurality of water outlets are fixedly connected to the position, located at the upper end of the collecting bin, of the side face of the carrying plate. A water storage tank is fixedly connected to the side face of the equipment body, a conveying pump machine is fixedly connected to the upper end of the water storage tank, waste water is discharged out of the equipment in a unified mode after being collected, a worker can conveniently conduct collection operation, follow-up waste water treatment operation is facilitated, a rectangular plate can conveniently carry containers needed by filling, and the filling efficiency is improved. Clean water can conveniently flow into the collecting bin.

The utility model discloses a regenerated water treatment system, include: ion exchanger for carrying out water quality treatment and produce regenerated flushing water, ultrafiltration recovery water pool is used for recycling and storage can be reused water, chemical wastewater pool is used for storing and processing the effluent wastewater, two plug valves are arranged respectively in: ultrafiltration recovery water pool and chemical wastewater pool ditch junction, chemical wastewater pool entrance, be used for controlling the switching of water flow direction, on -line instrument is used for real -time monitoring the operation data of ion exchanger, and according to data judges whether recycled use or discharges to wastewater pool with regenerated flushing water, this regenerated water treatment system utilizes ultrafiltration recovery water pool and can be recycled to raw water pretreatment use, and two plug valves are added in the intercommunication of ultrafiltration recovery water pool ditch and chemical wastewater pool ditch, one is added in the entrance of chemical wastewater pool, and one is added in the intercommunication of ultrafiltration recovery water pool ditch and chemical wastewater pool ditch.

The utility model discloses a kind of stone sorting devices for mining exploitation, including frame, the inner wall of the frame is provided with sorting mechanism, the sorting mechanism includes mounting bracket, screening disc, protective cover, top cover, inlet pipe and discharge hopper, the inside of the sorting mechanism is provided with material stirring mechanism, the outside of the screening disc is provided with excretory mechanism, the top of the frame is provided with adsorption mechanism;By being provided with sorting mechanism, by material stirring mechanism to stone, by multiple screening disc to stone Multistage sorting operation, sorted stone is discharged by excretory mechanism and discharge hopper, in the sorting process, stone can be better agitated, improve the fluidity of stone in screening disc inside, and further improve the efficiency of sorting operation, dust generated during sorting operation is adsorbed by adsorption mechanism, dust can be avoided to be directly discharged to outside, ensure the air quality of workshop, avoid to cause harm to the body of staff.

The invention relates to the technical field of tail gas detection, in particular to a sulfonic acid processing sulfonation tail gas detection sampling device which is characterized in that a three-way valve is arranged on the upper side of a cyclone separator, a sampling mechanism is arranged on the upper side of the three-way valve, and a docking mechanism is arranged on the sampling mechanism; according to the invention, the sampling assembly in the sampling mechanism is matched with the docking mechanism, so that sulfonated tail gas needing to be circulated and discharged in advance in the sampling process can be collected and flows back to the conveying pipe communicated with the electrostatic demister, and a plurality of sampling points at different positions can be arranged in the same section of sulfonated tail gas flow; therefore, synchronous multi-point random sampling on the same section of sulfonated tail gas flow can be realized; according to the invention, the butt-joint assembly in the butt-joint mechanism is matched with the quick-mounting assembly in the sampling mechanism, so that the gas collecting bag can be quickly sealed and mounted to a point position needing to be sampled so as to sample sulfonated tail gas.

This invention provides a waste steam recycling device for oil processing, relating to the field of oil processing technology. It includes a processing component with a waste heat recycling component and a condensation recycling component connected to its side. The processing component includes a softening pot, one end of which is connected to a tail steam discharge pipe, and the other end to a steam inlet pipe. By opening the valve on the first conveying pipe, this invention facilitates the transport of tail steam to the interior of the heating tank, enabling preheating of the material inside the pre-softening pot and facilitating the reuse of thermal energy. Preheating the material inside the pre-softening pot reduces steam costs. Finally, the tail steam is transported to subsequent processing equipment via a connecting pipe, preventing direct emission into the air and reducing air pollution. The insulation shell provides insulation for the heat inside the heating tank.

The invention relates to the technical field of steam boilers, and discloses an energy-saving boiler with a soot blower. Comprising a furnace body, and a furnace cover is mounted on the upper side of the furnace body; the gas storage shell is installed on the furnace cover, a sliding plate is connected into the gas storage shell in a sealed and sliding mode, an elastic telescopic rod used for driving the sliding plate to move is jointly and fixedly connected between the gas storage shell and the sliding plate, and the gas storage shell is fixedly connected with and communicates with a first middle pipe and a second middle pipe; and the water inlet flow guide shell is installed on the furnace cover, the furnace cover is provided with a gas guide shell, and the gas guide shell is fixedly connected and communicated with an exhaust pipe. Excessive steam prepared by the boiler is stored through the steam storage shell, the steam is prevented from being directly discharged into the atmosphere, energy loss is reduced, when the steam preparation speed of the boiler is reduced, the steam stored in the steam storage shell is conveyed into the steam conveying pipeline again, the steam utilization rate is increased, and the purpose of saving energy is achieved.

The invention relates to the technical field of water purifiers, and discloses a wastewater discharge method and device, a water purifier and a storage medium, the method comprises the following steps: obtaining a concentrated water discharge mode by receiving a purified water preparation signal of a filter system, the concentrated water discharge mode representing a discharge mode of concentrated water generated by the filter system; and controlling the filtering system to discharge concentrated water according to the concentrated water discharge mode. In the application, the received purified water preparation signal of the filtering system is taken as the time node for acquiring the concentrated water discharge mode, and the discharge mode of the concentrated water generated by the filtering system is controlled in time, so that the concentrated water is prevented from being directly discharged to a sewer, thereby greatly reducing the discharge of the concentrated water, improving the utilization rate of the concentrated water and reducing the cost. The water resource waste is reduced.

The application relates to a multi-stage combustor and belongs to the technical field of combustors.The multi-stage combustor comprises a multi-stage combustor body, a central combustion zone, a peripheral combustion zone and a cross-section adjustable air supply system; the multi-stage combustor body has an inner-outer nested structure; the central combustion zone comprises an array type combustor arranged in the central region of the multi-stage combustor body; the peripheral combustion zone comprises an annular hole combustor coaxially arranged outside the array type combustor; and the cross-section adjustable air supply system comprises an air channel adjusting mechanism arranged outside the array type combustor; the application provides a multi-stage combustor, air flow and flow speed are dynamically regulated through the air channel adjusting mechanism, and combustion stability is improved; independent adjusting devices are arranged at the central and peripheral fuel outlets, fuel flow is finely controlled, and flame form is optimized; partition combustion reduces NOx generation, carbon smoke particles are completely oxidized in the peripheral zone, low emission is realized, modular design facilitates installation and maintenance, and operation is simple, flexible and convenient.

The invention discloses a nickel-containing wastewater treatment method which comprises the following steps: adding a pH regulator into nickel-containing wastewater, stirring, and precipitating impurity metal ions to obtain a first mud-water mixture; performing mud-water separation on the mud-water mixture to form nickel-containing filtrate and first impurity sludge; adding a pH regulator into the nickel-containing filtrate, regulating the pH value to be greater than 10, and stirring to form nickel hydroxide precipitate, so as to obtain a second mud-water mixture; performing mud-water separation on the second mud-water mixture to form clear water and second impurity sludge; adding a 30% sulfuric acid solution into the second impurity sludge, and stirring to form a nickel sulfate electrolyte; the nickel sulfate electrolyte is subjected to electrolytic deposition to form a nickel simple substance, and a boric acid buffer agent and a sodium hydroxide solvent are supplemented to adjust the PH value to be 2.8-3.5; and the nickel elementary substance is recycled. According to the method, high-purity nickel elementary substances can be separated out, secondary processing is not needed, and the purity requirement of finished nickel is met; the dosage of the agent is small, and secondary pollution is reduced.

The utility model discloses a negative pressure shunting structure of a plasma cleaning machine, which relates to the technical field of cleaning machines and structurally comprises a water tank, the top of the water tank is fixedly connected with an exhaust pipe, the other end of the exhaust pipe is fixedly connected with a negative pressure pump, a water inlet is arranged at the top of one side of the water tank, and a one-way valve is mounted at the water inlet. The bottom of the other side of the water tank is connected with a water outlet, the water outlet is provided with a ball valve, the other end of the ball valve is in threaded connection with a water outlet pipe, and an opening of the water outlet pipe is in threaded connection with a filter cover. Gas in the water tank is pumped out through the negative pressure pump to be in a negative pressure state, liquid in the cleaning tank of the plasma cleaning machine is sucked out through the water inlet pipe and then discharged through the water outlet in the bottom, the structure is simple, installation is easy, and drainage is convenient.

The invention discloses a new energy automobile CTP module-free battery pack which comprises an upper shell, a battery module, a limiting frame for limiting the battery module, heat-conducting glue, a liquid cooling plate, heat-insulating cotton and a lower shell, and further comprises fixing plates symmetrically fixed on the inner side of the limiting frame, and sliding grooves formed in the inner sides of the fixing plates in the length direction of the fixing plates, a vertical groove is formed in the top of the bottom end of the sliding groove, a communicating cylinder communicates with the connecting position of the vertical groove and the sliding groove, a second reset spring is assembled in the communicating cylinder, the second reset spring is connected with a limiting block in an antiparallelogram shape, and the inner side of the limiting frame is further slidably connected with a partition plate frame used for blocking a battery. The two ends of the partition plate frame are fixedly connected with sliding blocks capable of sliding in the vertical grooves and the sliding grooves. The battery pack can be cooled in the running process of an automobile, the temperature between batteries can be prevented from being too high, the cooling effect is improved, and the practicability is improved.

The utility model relates to the technical field of piston ring cleaning agents, and discloses a piston ring cleaning agent production waste treatment device which comprises a supporting frame, a second box body is fixedly connected to the middle of the top of the supporting frame, a discharging pipe is fixedly connected to the front side of the second box body, and a valve is fixedly connected to the top of the discharging pipe. And a filtering mechanism is arranged in the second box body, and cleaning mechanisms are arranged on the two sides of the top of the supporting frame correspondingly. According to the waste treatment device for production of the piston ring cleaning agent, through the arranged filtering mechanism, solid particles and suspended solids in waste can be filtered, so that the situation that the waste is directly discharged and pollutes the environment can be avoided, meanwhile, the purpose of taking out the solid particles and suspended solids in a filtering piece can be achieved, recycling is convenient, and the waste treatment efficiency is improved. And through the arranged cleaning mechanism, the interior of the second box body can be cleaned, so that use next time is facilitated.

The utility model discloses an energy-saving pneumatic conveying valve which comprises a ventilation pipeline, a switch assembly is installed on the ventilation pipeline, a pressure relief assembly is installed on the ventilation pipeline, the pressure relief assembly comprises an air storage cylinder fixedly installed at the top end of the ventilation pipeline, the air storage cylinder is communicated with the ventilation pipeline, a piston is movably installed in the air storage cylinder, and the air storage cylinder is communicated with the ventilation pipeline. The outer wall of the piston is tightly attached to the inner wall of the air cylinder, a first spring is fixedly installed at the top end of the piston, the top end of the first spring is fixedly connected with the inner top wall of the air cylinder, a magnetic block is fixedly installed at the top end of the piston, and an electromagnet is fixedly installed on the inner top wall of the air cylinder. During working, when the set air pressure is large, the bottom wall of the blocking plug moves upwards under the action of the air pressure, air enters the air storage cylinder through the fixing ring, the air pressure in the ventilation pipeline is stable along with the increase of the amount of the entering air, the piston moves upwards, meanwhile, redundant air is stored, the air is prevented from being directly exhausted, and the service life of the ventilation pipeline is prolonged. And energy is saved.

The application discloses a system and process for removing perfluorooctanoic acid by integrating coagulation sedimentation and modified activated carbon adsorption, and belongs to the technical field of water pollution treatment. The system comprises a container frame, a support frame is arranged on the upper portion of the container frame, an adjusting tank, a coagulation sedimentation tank and a modified activated carbon adsorption tank are sequentially arranged on the bottom of the container frame in the transverse direction and are communicated through pipelines, a first booster pump and an electromagnetic flowmeter are arranged on the pipeline between the adjusting tank and the coagulation sedimentation tank, a second booster pump is arranged on the pipeline between the coagulation sedimentation tank and the modified activated carbon adsorption tank, and the backwashing water outlet of the modified activated carbon adsorption tank and the water inlet of the coagulation sedimentation tank are communicated through a backwashing water return pipeline. The application adopts integrated and modular design and is provided with a closed loop return system, so that the removal rate of PFOA in wastewater can be effectively improved, and the problems of limited activated carbon adsorption capacity and difficult treatment of backwashing wastewater are solved.

The utility model discloses quartz sand purification equipment, which relates to the technical field of quartz sand, the equipment comprises a cabinet body, a cabinet door, a sliding plate and a pickling bath, the cabinet door is installed on one side of the cabinet body, the sliding plate is connected inside the cabinet body in a sliding mode, the pickling bath is installed at the inner bottom of the cabinet body, a filter box is arranged inside the pickling bath, and the filter box is connected with the cabinet body in a sliding mode. U-shaped frames are installed on the two sides of the filter box, a filter assembly used for filtering acid mist generated by pickling is arranged on the sliding plate, and a fixing assembly used for fixing is arranged on the filter box. After acid mist generated in the pickling process is sucked through the air pump, impurities are filtered and adsorbed through the drawing drawer, and then the acid mist is discharged out of the filter box, so that discharged air is purer, the acid mist is prevented from being directly discharged into the air, quartz sand subjected to pickling is conveniently discharged through the arranged fixing assembly, and the quartz sand pickling efficiency is improved. And operators are prevented from directly contacting the quartz sand.