36results about How to "Promote buoyancy" patented technology

The invention relates to a method for installing pipelines assisted by air bags, aiming at solving the technical problem in completely changing the current method of pipeline underwater construction,and providing a construction method which can avoid underwater work, reduces work risk and has high efficiency. The whole scheme of the invention is as follows: 1. the front end of a first section ofa pipeline is blocked, the blocking material or the pipeline wall is provided with a water inlet and a water outlet, and if the first section of the pipeline is completely launched, the rear end thereof is blocked by airbags; 2. launching ends of other pipelines to be linked are blocked by airbags, then the pipeline are launched; 3. linkage operation is carried out on the pipeline in a floating state; 4. valves of the water inlet and water outlet are opened, the pipeline and the airbags are exhausted so that water can flow into the pipeline to cause the pipeline to sink, when the pipeline needs to sink after the pipeline linkage is finished; 5. when the pipeline needs to be linked again, the airbags arranged at the pipeline mouth are aerated, then the pipeline is aerated, so that water inthe pipeline can flow out from the water inlet and the water outlet, the pipeline floats, then valves of the water inlet and the water outlet are closed, and the pipeline linkage is carried out again.

The invention provides a method for purifying industrial wastewater and relates to the technical field of formaldehyde purification. The industrial wastewater purification treatment device includes a base, a treatment box is fixedly installed on the top of the base, a water inlet pipe is connected to the top of the treatment box, a first bracket is fixedly installed on the right side of the treatment box, and a first bracket is fixedly installed on the top of the first bracket. The motor is movably connected with a rotating rod at the output end of the motor. The industrial wastewater purification treatment device, through the cooperation of stirring rod, stirring roller, turbine stirring head, coagulation flocculation filter plate, liquid medicine tank, sedimentation liquid, water pump, automatic spray gun, orifice plate, carbon rod, DC power supply and activated carbon filter plate, During the purification process of industrial wastewater, the three methods of physical filtration, sedimentation and electrolysis have been integrated, which greatly improves the efficiency of wastewater purification treatment. At the same time, the purification treatment effect of industrial wastewater is good, so that the treated wastewater can be Reaching the discharge standard is conducive to protecting the natural environment.

A multiple circulating column outside micro-bubble mineralizing flotation column is composed by a column body (1), a bubble discharging sliding groove (2), an upper circulating cone groove (4), an upper circulating pump feeding pipe (5), an upper circulating pump (6), an upper circulating mineralizing feeding circular pipe (8), a plurality of upper circulating mineralizing device components (9), a plurality of upper circulating mineralizing air feeding pipes (13), a lower circulating cone groove (16), a lower circulating pump feeding pipe (18), a lower circulating pump (19), a lower circulating mineralizing feeding circular pipe (21), a plurality of lower circulating mineralizing device components (22), a plurality of lower circulating mineralizing air feeding pipes (26), and a tailing outlet pipe (14). The column has the advantages that each mineralizing circulating system comprises a plurality of micro-bubble mineralizing device components, so that the mineralizing efficiency of pulp is guaranteed; the flotation column is composed by an upper and a lower pulp mineralizing systems, thereby the recovery rate of minerals is guaranteed; and the column is suitable for a flotation process emphasizing the recovery rate of minerals such as bauxite, apatite and the like.

The invention discloses a continuous-type rapid water separating device for agriculture rice seeds. The continuous-type rapid water separating device comprises a machine body, a raw material box is mounted at the position, located in a mounting port, of the top of the machine body, and the bottom of the raw material box is connected with a material conveying barrel; the lower end of the material conveying barrel is connected with a blanking pipe, the center of the bottom of the machine body is provided with a center pipe, the lower end of the center pipe is connected with an air delivering pipe through a rotating joint, and the other end of the air delivering pipe is connected with an air pump; a centrifugal disc is mounted at the position, located in the machine body, of the upper end ofthe center pipe, and a plurality of exhaust heads are arranged on the side face of the centrifugal disc in the circumferential direction; a material guiding conical barrel is further arranged at the position, located in the machine body, of the lower side of the centrifugal disc, and a plurality of impurity discharging pipes are arranged on the side face of the machine body in the circumferentialdirection; and an impurity storing box is mounted at the position, on the machine body, of the lower sides of the impurity discharging pipes, the bottom of the impurity storing box is connected with awater return pipe, a conveying pump is mounted on the water return pipe, and the other end of the water return pipe is connected to the bottom of the side face of the machine body. The continuous-type rapid water separating device for the agriculture rice seeds is novel in structure, continuous rapid water separating can be conducted on the agriculture rice seeds, energy saving and environmentalprotection are achieved, and popularization is facilitated.

The invention relates to a device and a method for treating urban sewage by a reverse air flow continuous water inlet three-circulation reactor. The device comprises an urban domestic sewage tank, a reverse air flow continuous water inlet three-circulation aeration tank and a vertical flow type precipitation tank in sequential arrangement, wherein a top water outlet of the domestic sewage tank communicates with a water inlet formed in the top of one side of the reverse air flow continuous water inlet three-circulation aeration tank through a water pipe; a water feed pump is arranged on the water pipe; a water outlet formed in the bottom of the other side of the reverse air flow continuous water inlet three-circulation aeration tank communicates with a water inlet formed in the top of the vertical flow type precipitation tank; one row of aeration pipes is arranged at one side of the inner bottom of the reverse air flow continuous water inlet three-circulation aeration tank. The reactor provided by the invention has the advantages that the organic matter and nitrogen mass transfer speed in the sewage is accelerated; the carbon source can be continuously supplemented so as to ensure the normal proceeding of denitrification. Compared with that of a conventional aeration tank, the denitrification rate is improved by about 30 percent.

The invention belongs to the technical field of pulp floatation, in particular to a metal mineral separation flotation process. The process comprises the following steps: mined metal ores are primarily crushed through a jaw crusher, so that metal ore particles are smaller than 1 cm; the crushed metal ore particles are fed in a ball mill for crushing and grinding until metal ore powder with diameters of smaller than 1 mm is obtained; the metal ore powder is fed in a spiral grader for cleaning and classification; then, magnetic substances in the metal ore powder are separated by a magnetic separator; the separated metal ore powder is fed in a metal ore separation flotation machine; medicaments of sodium alkyl dithiocarbonate and pine oil are charged in pulp in the metal ore separation flotation machine; and meanwhile, a proper amount of sodium bicarbonate and acetic acid are fed in the pulp. Through reaction between the sodium bicarbonate and the acetic acid, a lot of bubbles can be generated, so that minerals can be fully captured, and the pulp flotation efficiency is improved.

The invention discloses an oil-containing suspended particle semi-sinking type adsorption floating patch for water body remediation, and belongs to the field of water body remediation. The oil-containing suspended particle semi-sinking type adsorption floating patch is characterized in that adsorption petals float on the water surface when the oil-containing suspended particle semi-sinking type adsorption floating patch is just put into water body, the amount of impurities absorbed ininward-contracting floating rods is more and more along with the extension of adsorption time, the gravity is increased, Meanwhile, oil absorption is gradually increased, so that the inward-contracting floating rods gradually leak air, the size is reduced, buoyancy is reduced, the adsorption petals sink, the floating patch is in a semi-sinking state at the moment, the ends, provided with colored light spots, of self-floating photovoltaic rods gradually float on the water surface along with sinking of the adsorption petals, and the sinking degree is increased; the number of the self-floatingphotovoltaic rods floating on the surface of the water body is gradually reduced, so that the amount and density of the colored light spots on the surface of the floating patch are reduced, the effect of visually and visually reminding workers in time is achieved, and then the utilization rate of the floating patch and the remediation efficiency of the water body are effectively guaranteed.

A method of desulfurizing molten iron (2) which comprises stirring molten iron (2) to which a desulfurizing agent (8) has been added and thereby dispersing the desulfurizing agent (8) to desulfurize the molten iron (2), wherein the desulfurizing agent (8) is added to the molten iron (2) multiple times in a manner such that stirring is temporarily stopped or conducted at a reduced stirring force at least one time the desulfurizing agent (8) is added subsequent to the first addition in order to cause slag (9) to rise to the surface of the molten iron (2), and the desulfurizing agent (8) is added to the floating slag (9). Preferably, when the slag is caused to rise to the surface, the impeller immersion depth is reduced. Preferably, the impeller is moved downward when the floating slag is taken into the molten iron. The efficiency of reaction of the added desulfurizing agent is thereby improved.

The invention discloses a tar ammonia water clarifying tank and a tar ammonia water clarifying system. The tar ammonia water clarifying tank comprises a tank body and an internal floating disc arranged in the tank body, wherein the top of the tank body is provided with a fluid inlet. The fluid inlet is communicated with one end of a fluid inlet pipe. The other end of the fluid inlet pipe goes through the internal floating disc and stretches to the bottom of the tank body. The edge of the internal floating disc is provided with a sealing device, which seals the gap between the internal wall ofthe tank body and the internal floating disc. The tank and the system are both arranged on the ground, thus people can conveniently observe the liquid level in the tank body and carry out maintenanceeasily; a supporting and heating device is arranged under the internal floating disc, a temperature sensor is arranged on the internal floating disc, thus the temperature can be controlled conveniently, and the layering becomes more sufficient.

The invention discloses a machining all-in-one machine used for a beryllium bronze blank. The machine comprises a shell, and a control switch is installed on the outer side face of the shell. A feeding door is arranged at the upper end of the left side face of the shell. A discharging door is arranged at the lower end of the right side face of the shell. A fixing table is fixed to the left side face of an inner cavity of the shell. A hinge shaft is arranged in a shaft hole of the fixing table in the vertical direction. A melting kettle is arranged at the upper end of the hinge shaft, and the bottom face of the melting kettle is in an arc shape. A feeding opening and a discharging opening are oppositely formed in the middle portions of the left side and the right side of the melting kettle,and a fixing shaft is fixed to the upper end face of the melting kettle. The machining all-in-one machine used for the beryllium bronze blank is simple in structure and convenient to use, raw material melting can be conducted through the melting kettle, stirring can be conducted after the raw material is melted, the technical requirement is met, the raw material can be transferred to a blank discharging device through a groove plate to be machined into an ingot bar which is conveyed out through a conveying device, the equipment integration degree is high, control is convenient, the machiningefficiency is improved, the sealing effect is good, and the safety performance is improved.

The invention discloses a preparation process of a novel copper-aluminum transition wire clamp embedded with a liner tube, and belongs to the field of copper-aluminum transition wire clamps. According to the preparation process of the novel copper-aluminum transition wire clamp embedded with the liner tube, the strength of the novel copper-aluminum transition wire clamp is remarkably improved by enlarging the inner diameter and the outer diameter on the basis of the original wall thickness and welding an aluminum lining; in the welding process, molten aluminum is introduced into a gap formed between the aluminum lining and the inner wall of the binding post, and the pneumatic floating ball is arranged, so that on one hand, the inner wall of the aluminum lining is effectively protected against high-temperature deformation under the action of molten aluminum, on the other hand, large-amplitude vibration is generated when the pneumatic floating ball is vaporized, and the pneumatic floating ball continuously collides with the aluminum bush under the action of the air floating ball, so that downward movement of molten aluminum is effectively accelerated, the pore volume in a welding layer is reduced, the compactness of the welding layer is improved, and the problem of poor contact caused by oxidation of copper and aluminum during use can be effectively avoided.

The invention belongs to the technical field of immersed tube tunnels, and particularly relates to a construction method for floating transportation undocking installation of a dock gate. The method comprises the dock gate placed in a dock, the dock gate is provided with a water storage cavity, and the method comprises the following steps that S1, accumulated water in the water storage cavity is pumped out, so that the dock gate floats; S2, the dock gate is transported out of the dock in a floating mode; S3, after the dock gate is undocked, the direction of the dock gate is adjusted to enable the dock gate to reach the mounting position; S4, water is poured into the water storage cavity, so that the dock gate presses water to sit at the bottom; and S5, the dock gate is installed. According to the construction method, accumulated water in the water storage cavity of the dock gate is pumped out, so that the weight of the dock gate can be reduced, the dock gate can be conveniently transported out of the dock in a floating mode, after the dock gate is undocked, the position of the dock gate is adjusted, so that the dock gate reaches the mounting position, the position precision of the dock gate after reaching the mounting position can be guaranteed, installation is carried out after the dock gate is set at the bottom, the dock gate in the dock can be conveniently transported out of the dock in a floating mode, the position precision of the dock gate after the dock gate reaches the installation position can be guaranteed, and then the precision of re-installation of the dock gate can be guaranteed.

The invention relates to the field of biomedical material manufacturing, in particular to a method for purifying a bacterial cellulose membrane and application thereof. In order to solve the problems that edible pigments, preservatives, essences and other components are added into bacterial cellulose in the prior art, the total bacterial count, appearance permeability and cytotoxicity in the bacterial cellulose do not meet the requirements, and yellowing, discoloration, wrinkling, blistering and the like are avoided, the invention provides the method for purifying the bacterial cellulose membrane and application thereof. Experiments find for the first time that through cooperation of hot alkali and normal-temperature alkali washing, more impurities can be removed on the premise that the structure of the bacterial cellulose membrane is not damaged, and meanwhile damage to the bacterial cellulose membrane in the follow-up hydrogen peroxide cleaning process can be avoided. The mammalian fibroblasts are treated by the leach liquor of the membrane for biological reaction, and the result shows that the cell activity is greater than 90%.

The invention provides a water conservancy project rapid desilting device with a stirring function. The water conservancy project rapid desilting device comprises a floating structure, auxiliary structures are hinged to the bottoms of the two sides of the floating structure, the bottom of the floating structure is connected with the mounting structure, an expanding structure is mounted at the bottom of the mounting structure, a transmission structure is arranged at the front end of the expansion structure, a stirring structure is mounted on the transmission structure, and a collecting structure is fixed to the rear side of the expanding structure. A sludge collecting structure and a stirring structure are mounted on the bottom plate, so that the bottom plate is connected to the bottom of the mounting plate through four sets of connecting rods, meanwhile the connecting rods and the bottom plate form a parallelogram structure, therefore, the drooping bottom plate can be always in a structure parallel to the mounting plate, each group of connecting rods are arranged to be of a telescopic structure, the bottom plate can extend into a deeper water surface, and the desilting work is completed.