43results about How to "Increase agitation" patented technology

The invention provides a method of a pulse-jet membrane bioreactor and a device for realizing the method. The method adopts a jet aerator to replace a traditional blower to realize the cross-flow scouring effect of membrane components; wherein, circulating fluid flows through the jet aerator at high speed; air enters the jet aerator in a pulse way by a valve controlled by PLC and jets at the bottom through a gas spreading distributor; the PLC system regulates the cross-flow state of gas-liquid two-phase flow on the membrane surface by changing circulation flow rate and pulse frequency, so as to improve the scouring effect of the air to the membrane surface, to further control membrane pollution, to improve the energy utilization efficiency of a circulating pump and to reserve energy. The use of the jet aerator also increases the utilization efficiency of oxygen and improves sludge degradation effect. The device has the advantages of low operation energy consumption and low operation noise, slight membrane pollution, less early investment in equipment, simple structure of the device, small occupation area, simple and convenient operation and convenience in automatic running and control.

The invention relates to a high-entropy alloy CoCrFeMnNi and an atomization powder making method manufacturing technique. The atomization powder making method manufacturing technique comprises the steps that 1, Fe, Co, Ni, Cr and Mn elementary substance small pieces with the same substance amount are smelted with a medium-frequency induction furnace to obtain a CoCrFeMnNi alloy rod material; 2, the CoCrFeMnNi alloy rod material is made into CoCrFeMnNi high-entropy alloy powder with an electrode induction melting gas atomization method; the finally manufactured high-entropy alloy CoCrFeMnNi does not have micro-segregation; the average particle size is 36 mu m; the particle size ranges from 15 to 53 mu m; the whole appearance is round and smooth; a single FCC phase is presented; and the sphericity is good, and no obvious powder adhesion occurs. The technique is simple; product performance is excellent; and the problems of the high-entropy CoCrFeMnNi manufactured with a current techniqueof being nonuniform in impurity, having micro-segregation, being large in particle size, being large in particle size deviation, being poor in sphericity, having partial powder adhesion and the like are solved.

The invention relates to a pretreatment process method and a device for removing aniline in wastewater through potassium ferrate. The method comprises the following steps: intensively mixing the wastewater to be treated and potassium ferrate in a tubular mixer, and setting the rate of flowing water in the tube to 0.8 to 1.0m/s; leading the intensively mixed wastewater into a tableflap type coagulating basin for 30min of reaction; and leading the reacted wastewater into a precipitation pool for precipitation, setting upward flowing rate in the precipitation pool to 10 to 15 mm/s, and leading the output water into a conventional biochemical system after precipitation. The method makes use of the strong oxidizing property of potassium ferrate to oxidize hardly degradable aniline into a series of aliphatic hydrocarbons, thereby improving the biochemical treatment efficiency of a subsequence process, and solving the problem of secondary pollution universally lying in other processes. In addition, a grid-shape holder plate is arranged in a coagulation area so as to shorten the reaction time and improve the reaction efficiency. A transition area is arranged between the coagulation area and the precipitation area and a grid-shaped baffle plate is also added to improve the precipitation effect.

The invention discloses an aluminum alloy welding process and belongs to the technical field of metal welding. The aluminum alloy welding process comprises the following steps: (1) a welding area of the surface of an aluminum alloy plate is put into a cleaning fluid for ultrasonic cleaning and then dried; (2) the welding area of the to-be-welded aluminum alloy plate is heated to 150-200 DEG C; (3) the welding area of the to-be-welded aluminum alloy plate is heated to 750-830 DEG C, a degasifier is sprayed to the welding area of the aluminum alloy plate, and the aluminum alloy plate is welded with a special aluminum alloy welding wire; (4) the welded part of the aluminum alloy plate is subjected to solid solution at the temperature of 300-450 DEG C, and the aluminum alloy plate is subjected to degasification treatment through ultrasonic waves; (5) the welded part of the aluminum alloy plate after solid solution treatment is transferred to cold water and cooled to the room temperature; (6) clearing and removal of welding powder or slag are performed. With the adoption of the aluminum alloy welding process, the pore problem can be effectively solved, and incomplete fusion, incomplete penetration and cracking phenomena are unlikely to occur.

The invention discloses a wear prevention reaction kettle which comprises a kettle body, a kettle cover, a U-shaped jacket and a stirring device, wherein the stirring device comprises a stirrer, a transmission device, an air pump, a shaft seal and a supporting seat; the stirrer is positioned inside the kettle body; the air pump, the shaft seal and the supporting seat are positioned on the kettle cover and are connected with the stirrer by virtue of the transmission device; a thermometer well stretches into the kettle body, and the upper end of the thermometer well is fixedly arranged on the kettle cover; the stirrer comprises a stirring shaft, a Y-shaped gas ejector pipe, a ring duct, a stator and a rotor; the air pump is connected with the Y-shaped gas ejector pipe by virtue of a hose; the stator is positioned behind the rotor; the kettle comprises a cylinder and an elliptical lower seal head; the cylinder and the elliptical lower seal head are encircled by the U-shaped jacket; and a spirally ascending batten is wound around the outer wall of the cylinder. According to the wear prevention reaction kettle disclosed by the invention, the adsorbate accumulated on the inner wall of the kettle body can be removed so as not to damage the kettle body; and moreover, bubbles can be reduced during stirring, and full contact between the mixtures is maintained.

The invention relates to an aluminum alloy degasifying agent which consists of the following components in percentage by weight: 13-15 percent of ammonium carbonate, 22-25 percent of activated carbon and the balance of calcium carbonate. The ammonium carbonate is decomposed at high temperature and reacts with hydrogen and oxygen in an aluminum alloy liquid, and thus gases such as carbon dioxide, nitrogen dioxide, water vapor, ammonia gas and small amount of methane are filtered. Due to the generation of the water vapor, the stirring degree of the melt aluminum alloy liquid is improved and the escape of the gases and the floating of aluminum slag are improved.

The invention relates to the field of building construction, in particular to hole guiding and pile planting equipment and a construction method. The hole guiding and pile planting equipment comprises a hole guiding mechanism used for forming a drill hole in a construction site and a pile planting mechanism used for pressing a preset pipe pile into the drill hole. The hole guiding mechanism comprises a drill bit; a main blade is connected with the peripheral face of the drill bit; a plurality of branch blades are connected with the blade face of the main blade; and an included angle between each branch blade and the main blade ranges from 30 degrees to 90 degrees. The construction method adopting the hole guiding and pile planting equipment includes the steps of construction preparation, drilling and hole forming, cement pile manufacturing, core pile inserting and the like. According to the hole guiding and pile planting equipment and the construction method, through the mutual cooperation of the main blades and the branch blades, the stirring degree of cement paste is improved, so that the composition of the cement paste and mixing between the cement paste and soil particles in the drill hole are more sufficient, the cement paste is more uniform, the problem that the cement paste is locally solidified too early is solved, and a finally formed cement composite pile has better quality.

The invention discloses a gravel material mixing device for constructional engineering, and relates to the technical field of building construction. The device comprises a fixing frame, the fixing frame is provided with a mixing tank used for storing sand and stone materials, a driving motor is fixed to a transmission box, the driving motor is in driving connection with a transmission mechanism located in the transmission box, the transmission mechanism is in driving connection with two stirring shafts vertically extending into the mixing tank, and a plurality of pairs of stirring rods are fixed to the stirring shafts at equal intervals. The transmission mechanism can drive the two stirring shafts to drive the respective stirring rods to rotate in opposite directions, the rotary stirring effect on sand and stone materials in the mixing tank is realized, the arranged stirring rod can vertically reciprocate while rotating along with the stirring shaft, the rotary stirring effect on the sand and stone materials at different vertical positions in the mixing tank is achieved, and the sufficient stirring degree of the sand and stone materials is remarkably improved. Meanwhile, the sand and stone materials in the mixing tank can be driven to rotate relative to the stirring rod, and sufficient and efficient stirring and mixing of the sand and stone materials are achieved.

The invention belongs to the technical field of industrial waste gas treatment, and particularly relates to an industrial VOCs waste gas treatment method. A washing system in the method comprises a washing tank, a transmission shaft, a stirring rod, a tube joint, a movable ring, a twisting ring, a spring and a limiting ring, wherein a group of rectangular strip-shaped projections are uniformly arranged on a cylindrical surface of the transmission shaft in the axial direction; a movable ring, springs and another movable ring are separately slidably mounted on the transmission shaft from bottomto top; a rectangular groove is formed in the central hole of each movable ring; a group of ball cylindrical projections are uniformly arranged on the cylindrical surface of each movable ring; a ring-shaped semicircular groove is formed in the central hole of the twisting ring; and a group of rectangular projections are uniformly arranged in the ring-shaped semicircular groove of the twisting ring. Each spring is arranged between the corresponding movable ring and the twisting ring, resistance during buffer starting is realized, and thus, the service life of the transmission shaft is prolonged; and meanwhile, impact force of the outside is absorbed, the probability of fatigue breakage of the transmission shaft is reduced, and the service life of the transmission shaft is prolonged.

The invention relates to the field of sodium sulfate production, in particular to a production system and a production method for sodium sulfate by adopting a single effect and mechanical thermal compression technology. The technical scheme provided by the invention is that the production system for the sodium sulfate by adopting the single effect and mechanical thermal compression technology comprises an evaporating system, a drying system and a purifying system, wherein the evaporating system comprises an evaporating tank; the evaporating tank comprises a tank body; a separating board is fixed in the tank body; clearances are reserved between the separating board and upper and lower ends of the tank body; the inner part of the tank body is separated into a stirring cavity and a convection cavity by the separating board; a stirring mechanism is arranged in the stirring cavity; a material pushing mechanism is arranged in the convection cavity. The production method for the sodium sulfate by adopting the single effect and mechanical thermal compression technology comprises the steps of evaporating, drying and purifying tail gases. The invention provides the production system and theproduction method by adopting the single effect and mechanical thermal compression technology, by which nitrate slurry is sufficiently stirred in the evaporating tank so as to improve the evaporationefficiency; the problem of relatively-low evaporation efficiency of the evaporating tank in an existing production system for the sodium sulfate is solved.

The invention discloses a reaction kettle. The reaction kettle comprises a kettle body, a kettle cover and a mixing device, wherein a lug boss is arranged on the inner wall of the kettle body, a pressure cover plate is arranged in the kettle body and positioned on the lug boss, a through hole is formed in the center of the pressure cover plate, and a scraping knife is arranged at the lower end surface of the pressure cover plate and close to the inner wall of the kettle body; the mixing device comprises a mixer, a transmission device, a shaft seal and a support, the mixer is positioned in the kettle body, the shaft seal and the support are positioned on the kettle cover and connected with the mixer through the transmission device, and plug holes are funnel-shaped and uniformly formed in the kettle cover; a thermometer sleeve tube extends into the kettle, the upper end of the thermometer is fixed on the kettle cover, and a thermometer is arranged in the thermometer sleeve tube; the mixer comprises a mixing shaft, a ring-shaped guide tube, a stator and a rotor; and diversion battens are radially arranged and circumferentially, uniformly distributed on the inner wall of the kettle body, and extend along the axial direction. The reaction kettle disclosed by the invention can reduce the generation of air bubbles during mixing through the novel mixing device, keeps full contact between mixed materials, and improves the mixing effect.