36results about How to "Promote buoyancy" patented technology

The invention discloses a modular automatic water stop device. The modular automatic water stop device comprises two or more automatic water stop units which are arranged in parallel in a line. Each automatic water stop unit comprises a panel and a base detachably installed on the ground, wherein a water storage cavity penetrating through the base vertically is formed in the base, one end of the panel is arranged on the base in a rotating mode, the water storage cavity is opened or closed when the panel rotates, a floating plate is arranged on the face, used for covering the base, of the panel, and a water inlet communicated with the water storage cavity is formed in the end, not connected with the panel, of the base. Every two adjacent bases are detachably connected. The modular automatic water stop device has the advantages that the automatic water stop device is simple in structure, convenient to machine and suitable for most water stop sites, the transport difficulty of the automatic water stop device is lowered, the use range of the automatic water stop device is widened, the installation construction cost and the machining cost of the automatic water stop device are reduced, the installation cycle is shortened, and the purpose of water stop for fixed buildings is rapidly and efficiently achieved.

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 provides an industrial wastewater purification treatment robot, which 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 used Reaching the discharge standard is conducive to protecting the natural environment.

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.

[Problem] To provide: a dry processed protein for use in instant foods which satisfactorily floats when eaten, readily returns to the original state in hot water, and is excellent in terms of texture, appearance, flavor, etc.; and a process for producing the dry processed protein. [Solution] A process for producing a dry processed protein for instant foods, characterized by comprising a small-particle formation step in which dough serving as a raw material and containing a main protein (e.g., egg white) and starch is formed into small particles, a small-particle adhesion step in which the small particles are adhered to one another while keeping the small particles in contact with one another, and a drying step in which the adhered small particles are dried. In some cases, the protein which is to be imitated (including meat, shrimp, cod roe, or the like) can be also added.

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 deodorant and mosquito-proof floor drain. The deodorant and mosquito-proof floor drain comprises a floor drain housing, a floor drain cover and a water drainage pipe, and further comprises a sealing device used for sealing and opening the water inlet of the water drainage pipe; the sealing device comprises an inverted bell jar and a hollow circular ring-shaped floating body component embedded outside the bottom of the bell jar; a pipe opening plug which can be inserted in and seal the water inlet of the water drainage pipe is embedded in the middle on the inner wall at the bottom of the bell jar; 4-6 circular arc-shaped concaves are formed in the bottom of the hollow circular ring-shaped floating body component in sequence at equal intervals. According to the invention, dirty gas even mosquitoes in the water drainage pipe are prevented from entering a room to pollute indoor air; meanwhile, when the floor drain conducts water draining again, the water is convenient to enter the bottom of the hollow circular ring-shaped floating body component, so that the inverted bell jar sealing the water drainage pipe opening is floated; the floor drain is simple in structure, low in manufacturing cost and convenient for popularization and application.

The invention discloses a modular automatic water stop device. The modular automatic water stop device comprises two or more automatic water stop units which are arranged in parallel in a line. Each automatic water stop unit comprises a panel and a base detachably installed on the ground, wherein a water storage cavity penetrating through the base vertically is formed in the base, one end of the panel is arranged on the base in a rotating mode, the water storage cavity is opened or closed when the panel rotates, a floating plate is arranged on the face, used for covering the base, of the panel, and a water inlet communicated with the water storage cavity is formed in the end, not connected with the panel, of the base. Every two adjacent bases are detachably connected. The modular automatic water stop device has the advantages that the automatic water stop device is simple in structure, convenient to machine and suitable for most water stop sites, the transport difficulty of the automatic water stop device is lowered, the use range of the automatic water stop device is widened, the installation construction cost and the machining cost of the automatic water stop device are reduced, the installation cycle is shortened, and the purpose of water stop for fixed buildings is rapidly and efficiently achieved.

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 provides a rapid dredging device for water conservancy projects with stirring function, which includes a floating structure; auxiliary structures are hingedly installed at the bottom positions of both sides of the floating structure; the bottom of the floating structure is connected with an installation structure, and The bottom of the structure is equipped with an expansion structure; the front end of the expansion structure is provided with a transmission structure, and a stirring structure is installed on the transmission structure; the rear side of the expansion structure is fixed with a collection structure, because the mud collection structure is installed on the bottom plate And the stirring structure, so that the bottom plate is connected and installed on the bottom of the installation plate through four sets of connecting rods. At the same time, the connecting rods and the bottom plate form a parallelogram structure, so that the drooping bottom plate can always be in a structure parallel to the installation plate. Each set of connecting rods is set It is a telescopic structure, so that the bottom plate can be extended into the deeper water surface, so as to complete the dredging work.

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 floatation apparatus for promoting the floating of coarse particle lean intergrowth. The floatation apparatus comprises a groove body, wherein a mineralization system is arranged in the groove body, the groove body is connected to a foam chute, and is downward connected to a tapered bottom, a floatation ore pulp inlet pipe extends into the groove body, a coarse particle precipitation box is arranged in the cavity formed by communicating the groove body and the tapered bottom, the bottom portion of the coarse particle precipitation box is provided with a row of coarseparticle discharge holes for coarse particle outflow, each coarse particle discharge hole is provided with a gravity valve, an ore pulp inlet and a wake outlet are arranged in the coarse particle precipitation box, the bottom portion, outside the coarse particle precipitation box, of the tapered bottom is connected to a circulating liquid outlet pipe, the circulating liquid outlet pipe is connected to a circulating pump, and the circulating pump is connected to the mineralization system. The invention further discloses a corresponding floatation method. According to the present invention, by adopting the technical scheme, the grinding fineness can be reduced while the same or even high coarse particle floating rate can be achieved, such that the production capacity of the grinding machinecan be increased, the energy consumption required for grinding is reduced, the energy-saving effect is achieved, and the mineral separation cost can be significantly reduced.

The invention discloses a rice field enclosing device capable of preventing loaches from running off and used for rice-loach co-culture. The device comprises a main rod and a fishing net, wherein an auxiliary rod is mounted below the main rod; the main rod is connected with the auxiliary rod through a rotating shaft, and foot rods are mounted on the inner side walls of the auxiliary rods; a hook is arranged on the right side of the main rod, and a rope winds the outer side of the hook; the fishing net is sequentially and transversely connected with a first transverse rope, a second transverserope, a third transverse rope and a fourth transverse rope from top to bottom, longitudinal ropes are longitudinally connected to the left and right sides of the fishing net, and connecting sleeves are connected to the outer sides of the longitudinal ropes; and a buoy is mounted at the top of the first transverse rope, and a lead weight is mounted at the bottom of the fourth transverse rope. According to the rice field enclosing device capable of avoiding loach loss and used for rice-loach co-culture, a previous dam anti-escape form is changed, the time and the workload are saved, dismountingand mounting are easy, the distance between the main rods can be adjusted, the weight brought by the transverse rods is reduced, the height of the device can be controlled, and escaping of water and loaches are prevented.

The invention discloses a water control suspended table. The water control suspended table comprises floating blocks, a balance disc, fixed tables, driving mechanisms, buckling mechanisms, steering mechanisms and a sliding groove, the exterior of each fixed table is sleeved with the balance disc, the steering mechanisms are uniformly arranged between the balance disc and the fixed tables, the sliding groove is formed in the inner wall of the balance disc, the floating blocks are uniformly arranged on the lower portion of the balance disc, the buckling mechanisms are connected between the floating blocks and the fixed tables, and the driving mechanisms are arranged inside the fixed tables; the steering mechanisms are composed of torsion springs, idler wheels, fixing rods, first grooves, connecting rods and pin shafts, the corresponding idler wheel is fixedly welded to one side of each fixing rod, the corresponding first groove is formed in the other side of each fixing rod, the connecting rods are movably connected inside the first grooves through hinges, and the corresponding pin shaft penetrates through one end of each connecting rod. The water control suspended table has the advantages of being convenient to control and high in practicability.

The invention relates to the technical field of water planting, and discloses a device and method for planting dendrobium on water. The inner shell and the outer shell are both arranged on the floating platform, and a planting space is defined by the inner shell and the outer shell; water absorption stones and a planting base are laid on the inner shell; a plurality of first vent holes are formed in the bottom of the outer shell, a second vent hole is formed in the top of the outer shell, a plurality of third vent holes are formed in the bottom of the inner shell, and the first, second and third vent holes are provided with control valves; the water absorption fibers are used for absorbing water to the water absorption stone; water mist sprayed by the atomizing nozzle can be sprayed to the water absorption stone and / or the planting base; a second flue is arranged in the heated brick bed, the first flue is spirally and upwards arranged on the inner wall close to the inner shell, a chimney is arranged at one end of the first flue, and the chimney penetrates through the inner shell and the outer shell. The device and the method have the advantages that the device and the method can achieve water wild-imitating planting of the dendrobium nobile, and the dendrobium nobile growth environment is convenient to control and manage.

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 objective of the present invention is to stabilize a discharge flow of molten steel and stabilize the melt surface inside a mold, that is, to reduce fluctuation thereof, in a flat immersion nozzle. In the present invention, lateral protrusion parts 1 protruding in the thickness direction are provided in the wall surface in the width direction of a flat portion in an immersion nozzle, which has a flat shape in which the width Wn of an inner hole is greater than the thickness Tn of the inner hole. These lateral protrusion parts 1 are arranged so as to form a pair slanting in the width direction and downward, at axisymmetric positions with respect to center axis in the vertical direction of the wall surface in the width direction, and the lateral protrusion parts 1 are arranged facing each other in both wall surfaces in the width direction.

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 relates to a jet flow spinning type lotus root digging machine which comprises a machine frame, a water pump arranged at the upper portion of the machine frame, a floating ring arranged in the middle of the machine frame, and a rotating unit located at the lower portion of the machine frame. A water outlet connecting pipe and a water inlet filtering connector are arranged at the bottom end of the machine frame. The water outlet end of the water pump is communicated with the water outlet connecting pipe. The water pumping pipe of the water pump is communicated with the water inlet filtering connector. The rotating unit comprises a hanging pipe, a sealing oil ring, an isolation sleeve, a rotating pipeline and a spraying nozzle. The isolation sleeve is connected with the bottom end of the water outlet connecting pipe in a threaded mode. The top end of the isolation sleeve is located in the water outlet connecting pipe. The bottom end of the hanging pipe is connected with the water inlet of the rotating pipeline in a threaded mode. The middle of the hanging pipe penetrates through the inner ring of the isolation sleeve and is in rotary fit with the inner ring of the isolation sleeve. The top end of the hanging pipe is provided with a flange which is arranged at the top end of the isolation sleeve through the sealing oil ring. The flange is in rotary fit with the water outlet connecting pipe. The jet flow spinning type lotus root digging machine has the advantages of being light in structure, easy to operate, convenient to move, high in efficiency and low in energy consumption.

The invention relates to a lifting valve structure for a dirt discharging pipeline, and belongs to the technical field of waste water treatment mechanical equipment. The lifting valve structure comprises a well body, an upstream pipe and a downstream pipe are arranged in a well body circular hole, the outlet end of the upstream pipe and the inlet end of the downstream pipe are each connected withone flexible pipe, a valve is connected between the two flexible pipes and fixed to a floating pad, and the floating pad is located on a bottom plate in the well body. Stand bars are arranged at the bottom of the floating pad, and a gap is formed between the bottom face of the floating pad and the upper surface of the bottom plate. A water gathering pit is arranged on one side below the well bodyand connected to a rainwater pipe network through a water discharging pipe. The lifting valve structure is compact in structure arrangement, operation is simple and convenient, a channel can be provided for accumulated water, and the final accumulated water can be thoroughly discharged; and the situation that the tension of the valve, the upstream pipe and the downstream pipe is too high, and consequently the connector strength is influenced can be prevented; and water flow can be effectively guided, the edge stretches out of the caliber of an overhauling port, and road surface rain water pouring can be effectively prevented.

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.

The invention discloses a structure-improved seed clearing device for agricultural planting. The structure-improved seed clearing device comprises a work box, supporting columns, antiskid plates, a PLC, a filter box structure, a primary filter box structure, a processing box structure, a discharging pipe and a switch valve. The supporting columns are welded to the left side and the right side of the lower surface of the work box correspondingly; the antiskid plates are welded to the bottoms of the supporting columns; the PLC is mounted on the upper right portion of the work box through bolts;and the filter box structure is welded in the transverse middle position inside the work box. The structure-improved seed clearing device for agricultural planting has the beneficial effect that by arranging the filter box structure, impurities in seeds are advantageously and conveniently floated, meanwhile, the floated impurities are also conveniently gathered, and the seed clearing effect of theseed clearing device for agricultural planting is further advantageously improved; and by arranging the primary filter box structure, excessively light impurities in the seeds are advantageously andconveniently separated, and meanwhile the problem that the seeds in the impurities are separated and disposed of is also solved.