35results about How to "Reduce the watering time" patented technology

The invention relates to a self-suction centrifugal pump which comprises a pump body, a volute, a front F-shaped sector partition plate and a rear F-shaped sector partition plate. The front F-shaped sector partition plate, the rear F-shaped sector partition plate and the inner wall of the volute are integrally formed, the front F-shaped sector partition plate and the rear F-shaped sector partition plate are staggered, and blades of an impeller project over a front cover plate and a rear cover plate of the impeller by 2-3mm. By the aid of the structure, the blades can sufficiently contact with liquid without large hydraulic loss, disturbance in the pump in starting is enhanced, gas sucked into a pipeline and the pump can be rapidly exhausted, gas-liquid separation is accelerated, gas exhausting time and water feeding time are shortened, and water feeding speed is increased.

The invention provides a manpower high platform aircraft capable of automatically opening when entering water and belongs to the technical filed of aviation. The manpower high platform aircraft comprises a skeleton, a skylight, a buoy switch, an operation frame, a top rod and a tail rod, wherein the buoy switch is provided with multiple pulleys, a connecting wire goes around the pulleys and is used for connecting insertion rods and buoys together; a spring is wound on each insertion rod; when not subjected to the tension of the connecting wire, the left and right insertion rods are inserted into corresponding sockets respectively under the elasticity action of springs, so as to prevent the skylight from opening; when the manpower high platform aircraft falls into water, the left and right buoys are subjected to floating force and float up along the corresponding buoy sliding rails to drive the connecting wire to move; at the moment, the left and right insertion rods leave the sockets along sliding grooves under the action of the connecting wire, so that the skylight is naturally opened and an operator can be rescued rapidly. According to the manpower high platform aircraft, the problems that an existing high platform aircraft has no escaping device, the rescuing time is long, danger is likely to occur and the operator is likely to be entangled by pulling wires when escaping are solved; the surfacing time of the operator is shortened and the device has an automatic escaping function.

A propeller telescopic and nose tilting device for a cross-medium aircraft belongs to the technical field of cross-medium aircraft. In the present invention, the rack I of the nose telescopic mechanism meshes with the gear III of the telescopic drive mechanism, and the guide rail I is fixedly connected to the shell of the nose compartment. ;The hollow shaft is set in the middle of the telescopic shaft in the telescopic mechanism of the machine head, the rack II meshes with the gear IV, and the guide rail II is fixedly connected to the shell of the machine head compartment; the base of the motor I is fixedly connected to the support plate; the base of the motor II in the telescopic drive mechanism is fixed Connected to the shell of the head compartment, the bearing with seat II and the bearing with seat III are fixedly connected with the bearing installation plate I and the bearing installation plate II respectively; Ⅳ. The base of the bearing with seat Ⅴ is fixedly connected to the shell of the fuselage, and the base of the motor Ⅲ is fixedly connected to the shell of the fuselage; the invention can realize the extension and contraction of the propeller, ensuring that the aircraft has good airtightness and small underwater running resistance. And it can realize the rapid exit of the aircraft, and greatly shorten the time for the aircraft to exit the water.

The invention provides a sewage treatment membrane module and a method for the sewage treatment through utilizing the membrane module. The membrane module comprises a shell and at least two membrane separation units arrayed in parallel and positioned in the shell, wherein the shell is cuboid or cubic in shape, the periphery of the shell is closed, and two ends of the shell are open; each of the membrane separation units is composed of a sewage chamber, a first driving liquid chamber, a clear water chamber and a second driving liquid chamber which are sequentially connected and are arrayed in parallel, and all the chambers are separated through organic polymer membranes; and especially the flow directions of sewages in the sewage chambers are opposite to the flow directions of driving liquids in the driving liquid chambers. The method for the sewage treatment through utilizing the membrane module has the advantages of operation under no pressure, light membrane pollution degree, low energy consumption, good treated outlet water quality, and realization of the reuse of reclaimed water.

The invention discloses a root water spraying system. The root water spraying system is characterized by comprising a transplanter, a water tank, a fixing frame, a water supply mechanism, a water storage tank and a spraying mechanism, wherein the water tank is arranged on the transplanter, the water storage tank is mounted on the transplanter through the fixing frame, the spraying mechanism is connected with the water storage tank, and the water supply mechanism is connected with the water storage tank. The water storage tank simultaneously stores water and pressure, the water discharge time is shortened and the water spraying pressure is increased by means of high pressure in the water storage tank; meanwhile, the water spraying amount can be controlled by regulating the pressure in the water storage tank. A water control switch is mounted, a submerged pump is automatically controlled by use of water flow, and energy conservation and environmental protection are realized. The working efficiency is improved, the labor intensity is reduced, and water resources are saved. The system is simple in structure, can realize automation to a certain extent and has high popularization applicability.