8results about How to "Reduce traffic loss" patented technology

The utility model discloses a tide tank which comprises a main tank, a filter tank, an air chamber, an overflow sewer pipe, a water pump, an upper water pipe, an air suction pipe, an exhaust pipe, a second electric ball valve and a Venturi jet device. The water feeding pipe comprises a first water feeding main pipe, a first water feeding branch pipe, a second water feeding branch pipe, a first electric ball valve and a second water feeding main pipe. The water inlet end of the first water feeding main pipe is communicated with the water outlet end of the water pump, the water outlet end of the first water feeding main pipe is communicated with the first water feeding branch pipe and the second water feeding branch pipe, the Venturi jet device is arranged on the first water feeding branch pipe, and the first electric ball valve is arranged on the second water feeding branch pipe. In the utility model, when the tide continues to rise, the high tide level, the ebb tide and the low tide level, most of water flowing out of the first water supply main pipe flows through the second water supply branch pipe, and only a small amount of water flows through the first water supply branch pipe, namely, only a small amount of water is subjected to resistance of the Venturi jet device; therefore, the flow loss of the water pump can be obviously reduced.

The application discloses an aero-engine compressor blade damage on-site repair method in the technical field of compressor blade damage repair, adopts any one or a combination of two of the repair methods of the repair method or the symmetric shearing method, removes the damage on the blade without disassembling the blade disc, reduces the influence of the damage on the compressor performance, simultaneously prevents the damage from further expanding, and the repaired blade disc can continue to be used, increases the service life of the blade disc, and guarantees the safety during the use of the blade disc.

The pushing actuator cylinder comprises a piston rod arranged in a cylinder barrel, and a guide sleeve and an integrated end cover are fixedly arranged at the two ends of the cylinder barrel respectively; an exhaust groove unit used for exhausting of the rod cavity of the cylinder barrel is formed in the inner wall of the end opening of the rod cavity of the cylinder barrel. A damping hole is formed in the inner wall of the rodless cavity of the cylinder barrel in the radial direction, a steel ball is arranged in the damping hole, and the damping hole is sealed when the steel ball makes contact with the step face of the damping hole. The integrated end cover is provided with an actuator cylinder air inlet hole communicated with a rodless cavity of the cylinder barrel, a valve shell is arranged on the end face of the outer side of the integrated end cover, a pressure reducing valve hole communicated with the actuator cylinder air inlet hole is formed in the valve shell, and a pressure reducing valve assembly is arranged in the pressure reducing valve hole. Pressure and flow loss of a gas path connector and a pipeline are reduced, and installation space is saved; and the actuating cylinder is sensitive and rapid in response, stable in operation, safe and reliable and the like.

The utility model relates to the technical field of high-pressure water pumps, and discloses a high-pressure water pump based on water or aqueous solution lubrication, which comprises a hydraulic cylinder component, a shell, a plunger and a driving component. The hydraulic cylinder body assembly comprises a first main body structure and a second main body structure, the first main body structure is connected with the shell, a containing space is formed in the first main body structure, and the second main body structure, the plunger and the driving assembly are arranged in the containing space. The first main body structure is internally provided with paired one-way valve cavities and a fluid channel for communicating the two cavities; plunger cavities matched with the plungers in a one-to-one correspondence mode are formed in the second main body structure, the fluid channels communicate with the plunger cavities, and one plunger corresponds to one pair of one-way valves. The first main body structure is made of copper alloy or aluminum alloy, and the second main body structure is made of stainless steel or cast iron. According to the high-pressure water pump, the hydraulic cylinder body assembly is of a split type structure, the first main body structure and the second main body structure are made of different materials, the overall manufacturing cost is reduced, and meanwhile the high-performance index of the pump is guaranteed.

The invention discloses an efficient noise reduction axial flow fan and a working method thereof. A plurality of slits which are arranged at equal intervals are formed in the front edge of a blade, a plurality of sawteeth are arranged in the middle of the rear edge of the blade, the slits and the sawteeth penetrate through the blade, a plurality of hole sets which are arranged at equal intervals in the circumferential direction are formed in the positions, flush with the rotating circumferential face of the blade, of a fan shell, and each hole set is composed of a plurality of round holes which are arranged at equal intervals in the circumferential direction. The efficient noise reduction function can be achieved during working, incoming flow turbulence noise generated at the front edge of the blade is reduced by forming the slit in the front edge of the blade, flow loss and noise caused by blade tip clearance vortex are reduced, noise generated at the rear edge of the blade is reduced by forming the sawteeth at the rear edge of the blade, and the noise reduction effect is improved. And the hole groups are formed in the positions, aligned with the rotating circumferential surfaces of the blades, of the fan shell, so that the problems of flow loss and noise caused by blade tip clearance vortexes are further reduced.

The utility model relates to the technical field of hydraulic pressure, in particular to an energy-saving hydraulic system which comprises a device shell, an energy storage device is arranged at the top of the device shell, a hydraulic pump is arranged at one end of the top of the device shell, a pump rear pipe is arranged at the output end of the hydraulic pump, and a control box body is further arranged at the top of the device shell. An oil storage tank is arranged in the device shell, a pressure sensor is connected to the bottom end of an energy storage device, a pressure reducing valve is arranged at the output end of the energy storage device, a selection trigger is arranged in the control box body, a circuit breaker is arranged in the control box body, and a pump front pipe is connected to the surface of the oil storage tank in a penetrating mode. A sandwich valve is arranged on the surface of the pump front pipe, a filter screen is arranged in the oil injection port, and two sets of buckles are symmetrically arranged in the oil injection port. According to the embodiment, the lubricating effect of hydraulic oil is improved, meanwhile, the working efficiency of equipment is improved, and the efficient hydraulic effect is achieved.

The present invention belongs to the technical field of filtering valves, and in particular to a self-cleaning valve structure that can filter debris. In view of the problem that ordinary valves cannot filter river sand in river water, the following scheme is proposed, including a first pipe, a loading tray is fixed to one side of the first pipe by bolts, and a loading rod is inserted into the circumferential inner wall of the loading tray, a fixing ring is welded to the circumferential outer wall of the loading rod near the side of the loading tray, and the fixing ring is connected to the loading tray, a vortex track is sleeved on the circumferential outer wall of the loading rod near the middle, and a loading bottom ring is welded to the circumferential outer wall of the loading rod away from the loading tray. The present invention sets a vortex track to allow the water flow to rotate, and the rotation of the water flow generates centrifugal force. Under the action of the centrifugal force, the river sand and water are layered, so that the river sand flows along the outer edge of the vortex track to achieve a separation and filtration effect.

The invention relates to a range hood with a noise reduction function, a noise reduction system and a noise reduction method, and belongs to the field of kitchen appliances. The range hood comprises a range hood main body and a smoke suction fan, the smoke suction fan is arranged in the range hood main body, the range hood main body comprises a fan volute, an air outlet, a wind wheel and a check valve plate, the air outlet is connected with the fan volute, the wind wheel is arranged in the fan volute, and the check valve plate is arranged in the air outlet. The fan volute is structurally characterized by further comprising a splitter used for dividing an airflow track into two paths to prevent noise caused by extrusion of airflow at a volute tongue of the fan volute, the splitter is arranged in the air outlet and divides the air outlet into a first flue and a second flue, the splitter is located below the check valve plate, and the first flue and the second flue are arranged in the check valve plate. The splitter is of a V-shaped structure.