46results about How to "Avoid evaporation loss" patented technology

The invention relates to the field of magnesium matrix composites, in particular to a high performance magnesium matrix composite based on laser 3D printing forming and a preparation method thereof. The high performance magnesium matrix composite comprises, by weight, 2-5% of monatomic silicon particles, 6-8% of LiH, 1-2% of CaH, and the balance high-purity magnesium powder. The problem of the evaporation and oxidation of magnesium alloy powder in the forming process can be effectively reduced, so as to ensure a precision forming manufacture of high performance magnesium alloy, and also a method for the preparation of magnesium alloy powder specially for laser additive manufacturing is provided.

A fog dispersing and water collecting device for a wet cooling tower relates to an assistant facility for the wet cooling tower. The device is arranged at the lower end of a cooling tower air duct and at a position below a fan and above an original water collector of the cooling tower; a separating plate is arranged in a water collecting and distributing chamber of the device and divides the chamber into a water collecting chamber and a water distributing chamber; a water feeding pipe is connected with the water collecting chamber which is connected to one end of a condensing water pipe; the other end of the condensing water pipe is connected with the upper part of a water returning chamber; the lower part of the water returning chamber is connected with one end of the condensing water pipe again; and the other end of the condensing water pipe returns to be connected with the water distributing chamber of the water collecting and distributing chamber, so that a closed circulating structure is formed; a spraying pipe is connected to the lower end of the water distributing chamber; the condensing water pipe is integrally attached to a concave-convex radiating sheet; positioning through pipes are arranged at the upper end and the lower end of the concave-convex radiating sheet; a water resisting plate is arranged on the convex surface of the inner side of the concave-convex radiating sheet; and the upper end of the water feeding pipe is connected with the water collecting and distributing chamber while the lower end of the water feeding pipe is connected with a pressurizing water pump, and then the water feeding pipe is connected with a mixing water tank, so that the fog dispersing and water collecting device is formed. According to the fog dispersing and water collecting device, saturated wet and hot fog is condensed into water, so that the water is prevented from being evaporated, the water source is saved, and the pollution to the environment is avoided.

The invention discloses a farmland irrigation system. The system comprises a main channel and a plurality of branch channels connected with the main channel; each branch channel comprises a channel body and channel protection embankments on the two sides of the channel body, and a plurality of water injection parts are arranged on the channel protection embankments; each water injection part comprises a drainage part on the outer side of the corresponding channel protection embankment and a flashboard for controlling water outflow of the drainage part in the corresponding channel protection embankment; a water storage unit is arranged beside each water injection part and comprises a base platform, a water storage part and a supporting base on the base platform; each water storage part comprises a water storage part base body, a water storage part pipe body and a water pipe communicated with the water storage part base body, and when in a horizontal state, the water storage part pipe bodies are connected with the drainage parts of the adjacent water injection parts. According to the structure of the farmland irrigation system, the water storage units are added, the moisture evaporation loss can be avoided by water stored in the water storage units, drought conditions of farmland can be relieved in drought seasons, and the farmland irrigation cost is reduced.

The invention relates to a high-temperature mineral powder cooling device belonging to the technical field of ferrous metallurgy. The high-temperature mineral powder cooling device comprises a volute body and a cooling center cylinder, wherein the volute body is arranged at the upper end of the cooling center cylinder, the volute body comprises a volute hole and a center shell, the center shell of the volute body is of a cylindrical structure with an opening in the lower end, a feeding pipe is arranged at the center of the top end of the volute body, the volute hole of the volute body is an air outlet, the cooling center cylinder is of a cylindrical structure with a through hole in the center, a cooling spiral water pipe is arranged in the through hole in the center of the cooling center cylinder, the discharging end of the feeding pipe is positioned above the cooling spiral water pipe, the upper end of the cooling spiral water pipe is communicated with a cooling water outlet by the cylinder wall of the cooling center cylinder, the lower end of the cooling spiral water pipe is communicated with a cooling water inlet through the cylinder wall of the cooling center cylinder, an air inlet is formed in the cylinder wall of the lower end of the cooling center cylinder, the opening in the lower end of the cooling center cylinder is communicated with a large opening of a conical cylinder positioned below the cooling center cylinder, and a small hole of the conical cylinder is a discharging hole.

The invention discloses a water storage unit which comprises a basic table, a supporting base, a water storage portion and a water storage portion fixing mechanism. The water storage portion comprises a water storage portion base body, a water storage portion pipe body and an end cap located at the end of the water storage portion pipe body, wherein the water storage portion base body comprises a water storage portion base body first bearing section, a water storage portion base body middle section, a water storage portion base body extending section and a water storage portion base body second bearing section, the water storage portion base body extending section is connected with the water storage portion pipe body to form a whole, the water storage portion base body can rotate around the central line of the water storage portion base body first bearing section, and the water storage portion pipe body is in a vertical state when storing water. The water storage unit adopts the structure, so that the water storage portion pipe body is in a horizontal state. After the water storage portion pipe body and the cavity of the water storage portion base body are full of water, the water storage portion is turned, so that the water storage portion pipe body is in the vertical state, water evaporation and loss can be avoided, and the water storage unit is convenient to use in a water-saving irrigation project and is smaller in floor area in use.

A lubricating oil for high-temperature-resistant powder metallurgy oil-impregnated bearings, prepared from the following raw materials in parts by weight: 25-45 parts of trimethylolpropane ester, 55-75 parts of trimellitate, polymethacrylate 2-10 parts, 1-5 parts of diisooctyl diphenylamine, 1-5 parts of high molecular weight phenol, 0.1-1 part of benzotriazole, 0.1-1 part of triphenyl phosphorothioate and 0.005 parts of methyl silicone oil ‑0.02 parts. The lubricating oil of the present invention can carry out continuous and stable lubricating operation of oil-impregnated bearings at a temperature of 200°C or above. And the lubricating oil is not easy to change color after long-term use at high temperature, and there will be no oxidation and coking. The finished lubricating oil has a high flash point and low evaporation loss. After being used, it can significantly prolong the service life of the equipment and reduce its maintenance rate.

The invention discloses an air blower facilitating heat dissipation, which can efficiently avoid high temperature of bearings, and overcomes the defects that the temperature of the bearing parts of the air blower in the prior art becomes too high easily. The air blower facilitating heat dissipation comprises a machine casing, an impeller and a motor, wherein an air outlet and an air inlet are formed in the machine casing, the impeller is connected with a rotating shaft of the motor through a transmission shaft, bearings and a coupler, the bearings are arranged in a bearing box, the openings of the two ends of the bearing box are sealed by the bearings, so that a sealed cavity is formed in the bearing box, and lubricating grease is filled in the sealed cavity. The air blower is applicable to the situations to which the conventional air blower is applicable, and has the advantages of low wastage of the lubricating grease, capability of efficiently avoiding the high temperature of the bearings and the like.