42results about How to "Save water energy" patented technology

The invention relates to a method and system for luring fishes with flow jetting. The system comprises a fish blocking flow jetting pipe arranged on the up stream of a fishway inlet. A plurality of fish blocking flow jetting holes are formed in a straight-line mode in the length direction of the fish blocking flow jetting pipe, and alpha fish blocking angles are formed between the outlet flow jetting lines of the fish blocking flow jetting holes and a riverway. A plurality of fish luring flow jetting pipes are arranged on the down stream of the fishway inlet along the riverway, a plurality of fish luring flow jetting holes are formed in the fish luring flow jetting pipes in a straight-line mode in the length directions of the fish luring flow jetting pipes, and gamma fish luring angles are formed between the outlet flow jetting lines of the fish luring flow jetting holes and the riverway. According to the method and system, fish blocking flow jetting and fish luring flow jetting are generated through flowing of water flow, and the fishes are prevented from going over the fishway inlet through fish blocking flow jetting, guided by fish luring flow jetting to enter a fishway and prevented from losing the direction. Compared with a traditional water replenishment fish luring mode, water consumption of fish blocking flow jetting and fish luring flow jetting is remarkably reduced, a large number of water conservancy resources are saved, and the method and system are simple in project construction, convenient to operate and suitable for various water conservancy projects.

The invention relates to a photogravure press and an energy saving method thereof. The photogravure press comprises a unit type photogravure press, wherein a totally closed compression condenser is arranged between thermostatic units required by each channel of the unit type photogravure press; the totally closed compression condenser is provided with a refrigeration department and a cold air outlet, and the refrigerating part is communicated with the unit type photogravure press by virtue of the cold air outlet; and the totally-closed compression condenser is provided with a heating part and a hot air outlet, and the heating part is communicated with the unit type photogravure press by virtue of the hot air outlet. Cooling on printing is realized by cold air produced by the refrigerating part of the totally-closed compression condenser, and heat produced in a refrigerating process is collected for being used in a drying process, thus the aims of energy conservation and high efficiency are achieved.

The invention discloses a device for filtering various water sources into direct drinking water. A primary biological-purification combined filter core water purifying module is added in front of conventional water purifying treatment equipment according to a water body purifying principle; and the steps of ozone pre-oxidation and chlorine sterilization are not needed, and pollutants in water, which are harmful to human bodies, are removed by relying on the metabolism effect of clustered microorganisms in the water. The device has the advantages of compact structure, small occupied area, low water making cost and large application range; the made purified water can be afforded by vast numbers of rural population and urban population. The invention is implemented through the following technical scheme: the disclosed biological-purification combined filter core water purifying module and the conventional water purifying treatment unit thereof are designed and manufactured into standard combined filter core modules; the combined filter core modules are buckled with each other from up to down to form a tower-shaped water purifying device according to the sequence of a water purifying treatment process; as for different water resources and different customer requirements, all that is needed is to replace the combined filter core modules in different processes according to the local water quality situation; and various water sources can be filtered into the direct drinking water.

The invention provides an automatic temperature control method for a rod material cold control system, and belongs to the technical field of rod material heat treatment. The method comprises the following control steps including temperature detection treatment: the effective value of actual temperature detection equipment is judged, and the actual detection value is corrected; automatic temperature regulation: the automatic temperature regulation is realized on the temperature after the pre-cooling section before the rod material fine rolling, and the automatic temperature regulation is realized on the cold bed inlet temperature of the rod materials. The problems of temperature control precision and stability of the rod materials are effectively solved. The method has the advantages that all cold control equipment realizes the automatic operation, and the distribution of the core part temperature and the surface temperature of the rod materials after the cold control automatic control is stable, so the intensity and the toughness of steel materials are improved, the steel material tissue is improved, and in addition, electric energy sources and water energy sources are saved through automatically controlling a cooling water pump and a valve group.