41results about How to "Reduce water speed" patented technology

The invention discloses a marine paddle type propeller device. The marine paddle type propeller device comprises two layers of parallel supports, chain wheels, chains, a power device and a propelling force control mechanism (further comprises a plurality of propelling mechanisms and two propelling direction control devices). Each propelling mechanism comprises a blade, a blade rotating shaft, two bearings and a set of blade limiting wheels, wherein the two bearings are fixed to all the layers of chains respectively, the blade is fixed to the blade rotating shaft, the blade limiting wheels are fixed to the blade rotating shaft through connecting rods, and the blade limiting wheels are located on the two sides of the blade respectively. The propelling direction control device comprises two parallel linear limiting chutes, and the blade limiting wheels slide in the motion direction of the chains with one linear limiting chute serving as a rail. The problems that an existing marine propeller is low in paddling efficiency and high in energy consumption cost can be solved through the marine paddle type propeller device.

Provided is a machining method of a metallurgical furnace launder. A mode that plate blank forging and machining are combined is used for machining. The method comprises the following steps that forged plate blanks are forged and pressed into a metallurgical furnace launder semi-finished product with an arc face; and a metallurgical furnace launder component semi-finished product is subjected to finish machining to form a metallurgical furnace launder finished product. The machined metallurgical furnace launder finished product comprises a launder body. The launder is formed in the top of the launder body. A plurality of cooling water channels are arranged in the launder body. The cooling water channels are communicated with each other in an end-to-tail mode. At least one water inlet and one water outlet are formed. A forming technology is changed into the mode that forging, pressing and machining are combined, so that body materials are compact, grain refining is achieved, mechanical property is good, heat conductivity is high, composite holes are used as the cooling water channels, the cooling performance of the cooling water channels is further improved, the improvements are combined so that the thickness of the launder body can be greatly reduced, a producer can know that the launder with good performance can be obtained with low cost increased, frequent maintaining or replacing is of no need, influence on normal production can be greatly reduced, and production efficiency is greatly improved.

The invention discloses an oil cylinder which comprises an outer cylinder body and an inner cylinder body, wherein the outer cylinder body and the inner cylinder body are connected through at least one positioning connector. The inner cylinder body comprises a cylinder barrel, a front sealing cover and a rear sealing cover, the side, corresponding to the front sealing cover, of the outer cylinder body is provided with a conical opening, the outer side of the opening is fixedly connected with a spraying pipe, a conical head which is coaxial with the front sealing cover is fixedly connected to the outer side of the front sealing cover, and the conical head can penetrate out from the opening of the outer cylinder and plug the spraying pipe. A piston, a piston rod and a spring sleeved with the piston rod are arranged in the inner cylinder body, wherein the piston and the piston rod are coaxial, one end of the piston rod penetrates out from the piston, and the other end of the piston rod penetrates out from the front sealing cover and is connected with the conical head. After the structure is adopted, the conical head is driven by the piston rod to plug or depart from the spraying pipe slowly, and therefore the flow rate of water is reduced or increased.

The invention discloses a method for solving agricultural non-point source pollution, which belongs to the field of agricultural ecology and environmental protection, and comprises the following steps: constructing a denitrification ditch along the vertical direction of the water flowing direction between ridges, backfilling the denitrification ditch with filler until the filler is 0.2-0.3 m away from the ground, and filling soil until the ditch is flush with the land; planting a flower and grass belt at the runoff water outlet end of the field side; constructing an ecological ditch between the riverway around the farmland and the riverway outside the farmland area; constructing an ecological interception dam at a water outlet of the ecological ditch, and constructing a drainage check gate on the ecological interception dam; planting emergent aquatic plants at the ditch bottom of the ecological ditch, and constructing plant zones on the ditch wall and the ditch side embankment; the original drainage ditch is fully utilized, the farmland drainage ditch is subjected to certain engineering transformation, and an ecological interception type ditch system is built, so that the ecological interception type ditch system has the original drainage function, and the ecological functions of adsorption, absorption, degradation and the like of nutrients such as nitrogen and phosphorus carried in farmland drainage are added.

The invention relates to a hidden drainage system of a municipal bridge. The system comprises a plurality of drainage channels formed in the two sides of a box girder and used for collecting rainwater, box girder hoses arranged on the box girder and hermetically connected with the water outlets of the drainage channels, bridge pier hoses arranged on a bridge pier and hermetically connected with amunicipal drainage facility, galvanized steel pipes arranged between the box girder hoses and the bridge pier hoses and connected with the box girder hoses and the bridge pier hoses in a sealed mode,and pipeline sealed connection devices arranged at the two ends of the box girder hoses and the two ends of the bridge pier hoses and playing a role in sealed connection. The sealed connection devicecomprises end blocks tightly and fixedly connected to the two ends of the box girder hoses and the pier hoses, a sealing head rotationally connected with the end blocks, sealing joints installed at both ends of galvanized steel pipes and at the outlets of the drainage channels and at the inlet of municipal drainage facilities and with the outer wall in threaded connection with the inner wall of the sealing head, and a rubber gasket arranged in the sealing head and tightly abutted against the end surface of the sealing joint. The system has the following effects that two ends of the box girderhose and two ends of the pier hose are not easy to separate and rainwater is prevented from directly leaking.

The invention relates to an underflow type back flushing multifunctional ecological filter dam. The filter dam comprises a dam body, wherein the dam body is composed of an upstream area, a backwater area, a reaction area between the upstream area and the backwater area, and Reynolds mats laid on the outer surface of the dam body. The upstream area and the backwater area are both composed of firstpebbles, the end of the upstream area and the end of the backwater area are provided with gabions filled wit the first pebbles, the reaction area is composed of a filter material, and the Reynolds mats are filled with the first pebbles; the upstream area is provided with a row of back flushing branch pipes inclined upwards in the water flow direction, the lower ends of the back flushing branch pipes are provided with openings, and the upper ends of the back flushing branch pipes extend to the reaction area and are communicated with a back flushing main pipe; the end, extending out of the reaction area, of the back flushing main pipe is provided with a gas pump communicated with the back flushing main pipe; the upper end of the reaction area is evenly and fixedly provided with biological ribbons in the vertical direction of the water flow. The filter dam is simple in structure, novel and unique, easy to install and use and multifunctional, can purify a water body of a river channel, canflush silt of a blocked part of the filter dam, and has good social and economic benefits.

The invention discloses a breeding site for Quasipaa spinosa. A leeward sunny place where the water source is sufficient, the water quality is not polluted and the location is relatively secluded is used for constructing an S-shaped water ditch as a Quasipaa spinosa pool for breeding Quasipaa spinosa at different growth stages, wherein one end of the S-shaped Quasipaa spinosa pool is provided witha water inlet, the other end is provided with a water outlet; a resting region is arranged from the edge of the Quasipaa spinosa pool to the center direction of the water ditch; a shading device usedfor sunscreening and shading of young Quasipaa spinosa and adult Quasipaa spinosa is arranged above the resting region; and two symmetric arc pool edges of the Quasipaa spinosa pool are provided withdisinfection liquid inlet which are connected with disinfection liquid storage boxes. The breeding site is in an S shape, when water is replaced, the water speed can be reduced without influencing growth of Quasipaa spinosa; and the breeding site is also provided with the disinfection liquid inlets, and a disinfection liquid is conveyed into the pool from time to time, so that water in the breeding site is in a good sterile state, the environment is appropriate, and the Quasipaa spinosa grows quickly with a low sickness rate and death rate.

The invention relates to a heating electric steaming appliance. The heating electric steaming appliance comprises a main machine seat and a steam seat; the main machine seat is movably connected withthe steam seat; a water inlet pipe, a preheating device and a heat conduction water outlet pipe are arranged on the main machine seat; a hot water inlet, a steam generation disc and a steam outlet areformed in the steam seat; the heat conduction water outlet pipe is connected with the hot water inlet; the preheating device comprises a water guide pipe and an electric heating pipe; the two ends ofthe water guide pipe are connected with the water inlet pipe and the heat conduction water outlet pipe respectively; the electric heating pipe extends in the extending direction of the water guide pipe and abuts against the outer wall of the water guide pipe. According to the heating electric steaming appliance, during heating work, the preheating device can continuously supply water to the steamseat so as to meet different use requirements of users.

The invention relates to a heat energy water circulating system for pushing circular flow of water to transfer heat by using water vapor, aiming at providing the heat energy water circulating system with the advantages of high heating speed, high water outlet speed, low water outlet temperature, high water circulating speed, high working efficiency and capabilities of realizing good water return and circular heat transfer effects for hot water blankets, mattresses, beddings, water circulation heat treatment clothes and the like. The heat energy water circulating system is characterized in that a heating container is of tubular and is obliquely or vertically arranged; an electric heating element is inclined upper on a heating container casing; when the electric heating element is heated, the temperature of the upper part of the electric heating container is higher than that of the lower part of the heating container; a water return connector is communicated with the upper part of the heating container and is fixed on the heating container casing; the heat between a water return channel in the water return connector and the heating container casing is insulated; a water outlet connecting pipe is communicated with the lower part of the heating container; the cross section of the water return channel in the water return connector is smaller than or equal to 28 square millimeters.

The invention discloses a water cooling multi-connection type unit water flow control structure. The water cooling multi-connection type unit water flow control structure comprises an outer connectionrotation shaft, a shell, a water inlet, a bolt, an observation window, a water outlet, a stop block, a buffer chamber, a rotation shaft, a mounting fixing ring, an inner shell, a seal strip, a waterflow buffer mechanism, a filter net, a steel ring, a triangular spiral fan, a thread, a second water outlet and a fixing block; the water flow buffer mechanism, the triangular spiral fan, a flow limiting damping structure and a height limiting structure are arranged, the water flow can be reduced secondarily, the passing water flow is reduced, the water flow acceleration is carried out through external connection of a small motor, the water circulation flow can be directly improved, the flow limiting damping structure and an intercepting plate are arranged, the water flow inertia and the spring elastic characteristics are used for automatic flow limiting, electric control is not needed, the energy cost is increased, the height limiting structure is arranged, a movable plate is supported, the pressure borne by the spring is reduced, and the service life of the spring is directly prolonged.

The invention discloses a hydraulic control valve with a filtering function, which comprises a valve body and a valve disc. The two ends of the valve body are respectively provided with a water inlet and a water outlet. The inside of the water inlet port is screwed with a connecting piece. The other end of the connecting piece is welded with a spiral pipe, and the spiral pipe runs through the connecting piece, a filter layer is welded in the valve body, a sand storage tank is installed at the bottom of the valve body, and an upper baffle plate and a sand storage tank are respectively welded in the valve body. The lower baffle, the upper baffle and the lower baffle are respectively close to the water inlet and the water outlet, a cavity is installed above the valve body, and connecting plates are welded on both sides of the top and bottom of the side of the cavity, The valve clack is located between the upper baffle plate and the lower baffle plate, and the middle part of the upper surface of the valve clack is welded with a connecting rod. The connecting rod runs through the valve body and is located in the cavity and the valve cover. Connected with a compression spring, this hydraulic control valve with filtering function has a simple structure, which ensures the long-term use of the device and reduces the cost of installation.

A water purifier. Provided is a water purifier with good flocculation effect, good filtering effect and reduced production cost without reducing the water inflow speed. It includes water inlet pipe, flocculation area, transition water storage area, inclined pipe sedimentation device, sedimentation area, filter chamber, clear water tank and outlet pipe connected in sequence. The flocculation area is equipped with buffer mechanism, guide plate 1 and guide plate 2. The first guide plate is arranged on one side of the water inlet pipe, the second guide plate is obliquely arranged on the upper part of the flocculation area, and the second guide plate faces the transition water storage area; the buffer mechanism is arranged in the flocculation area, And it is located between the first guide plate and the second guide plate. The buffer mechanism in the present invention can reduce the water speed through the rotating turntable, fully stir it, and improve the reliability of the reaction.

The invention provides a speed-reducing water outlet nozzle which can be applied to a known sprayer, can also be applied to a watering pot designed by the invention, and can reduce the pipe diameter of a spray pipe, improve the watering response speed and reduce the water outlet speed under the condition of ensuring the water outlet amount. The watering pot provided by the invention is a wateringpot capable of watering a high place, especially a spray pot with a telescopic watering pipe and a spraying function. The watering pot has two purposes, saves time and labor, and solves the problem ofinconvenience in watering of the high place.

The invention relates to the technical fields of resources and environmental protection, and in particular relates to an ecological pretreatment system for river channel upland water. The system comprises an A area, a B area is arranged on the right side of the A area, a C area is arranged on the right side of the B area, a D area is arranged on the right side of the C area, an E area is arrangedon the right side of the D area, an F area is arranged on the right side of the E area, a G area is arranged on the right side of the F area, an H area is arranged on the right side of the G area, anI area is arranged on the right side of the H area, and a J area is arranged on the right side of the I area. According to the system provided by the invention, net partition is arranged, so that garbage and particulate matter of the upland water are reduced, and a water velocity is slowed down to increase retention time of the upland water; aquatic plants are planted, so that the concentration ofsuspended particulate matter in a water body is reduced, the transparency of the water body is improved, and the water quality is improved; pipelines are laid for aeration, so that an oxygen contentin the water body is increased, competitive pressure of oxygen between the aquatic plants, aquatic animals and microorganisms is reduced, the breeding speed and purification efficiency of the microorganisms are reduced, and reduction of pollution load from the bottom to the top of the water body is achieved.