35results about How to "Uniform temperature up and down" patented technology

Being composed of floor plate, tube body, top cover and vent-pipe, the column heat pipe is a seal chamber with vacuum state inside. Capillary cover is in upper part, and floor plate is in lower part of the tube. There is sintered layer on inner wall of tube and inner surface of floor plate. The sintered layer connected to capillary cover constitute closed cycle channel of working fluid, which is adsorbed by the sintered layer and the capillary cover. The column heat pipe is prepared through steps: coating metal powder, and carrying out high sintering so as to form sintered layer; installing capillary cover and top cover; inserting vent-pipe; under special atmosphere furnace, high temperature brazing forms sealed chamber except vent-pipe; filling liquid heat transfer working medium from vent-pipe, and drawing out air; sealing vent-pipe. Features are: quick heat conducting rate caused by evaporation of working liquid and condensed phase change, small thermal resistance and light weight.

The invention provides an energy saving and emission reduction method of a carbon anode baking furnace, and relates to the field of metallurgical industry carbon techniques. A special furnace face sealing furnace cover is specially configured for the baking furnace, and the process of the baking furnace is optimized, namely the flame jetting length is 0.35 time of the flame path depth, the difference between temperature of products in a preheating furnace chamber and flame path smoke temperature is more than 280 DEG C, and a thermocouple is inserted into a second feed box of the preheating furnace chamber. According to the method, the sealing effect of the baking furnace is greatly improved, and cold air is effectively prevented from entering the baking furnace; meanwhile according to the practical experience of temperature distribution in the furnace chamber, the operation technique of the baking furnace is optimized, it is guaranteed that volatile matter fully burns and temperature on the upper portion of a flame path and temperature on the lower portion of the flame path are uniform, and energy consumption of the carbon anode baking furnace is greatly reduced.

The invention relates to a burner ascending and descending adjustable steel ladle baking device. The burner ascending and descending adjustable steel ladle baking device comprises a rack, two rotary arms, a ladle cover and a burner adjusting device. One end of each rotary arm is connected to the rack. The other end of each rotary arm is fixedly arranged on the upper surface of the ladle cover. The burner adjusting device is fixed to the rotary arms and the ladle cover. The burner adjusting device comprises an adjustment and power unit and four regenerative burners. The four regenerative burners are symmetrically fixed to a disk and can move up and down along with the disk. Nozzles of the regenerative burners are inclined at a certain angle, so that burning flames are sprayed into a steel ladle at a certain angle. The flames flow and rotate around the surface of the steel ladle to form a plurality of vortexes when impacting onto the inner wall of the steel ladle, and flowing of hot flue gas is accelerated. According to the burner ascending and descending adjustable steel ladle baking device, the burners can be adjusted to ascend and descend so as to make the temperature in the steel ladle rise to some extent, and the temperature of an inner lining at different heights is more uniform. The working efficiency is improved. The quality of flames and the baking quality are obviously improved.

The invention discloses a high-efficient propeller curing furnace. The high-efficient propeller curing furnace comprises a furnace body, a fixing shaft, a first material roller, a second material roller, a first supporting shaft, a second supporting shaft, a first supporting belt, a second supporting belt, multiple first mould racks and multiple second mould racks; the first material roller rotates anti-clockwise to reel the first supporting belt; the second material roller rotate clockwise to reel the second supporting belt; the first and second supporting belt separately drive the first supporting shaft and the second supporting shaft to move downwards; the first and second supporting shafts separately drive the multiple first mould racks and the multiple second mould racks to move downwards; the first material roller rotates clockwise to unreel the first supporting belt; the second material roller rotates anti-clockwise to unreel the second supporting belt; the first and second supporting shafts separately move upwards under the effect of a first elastic component and a second elastic component; the upper and lower mould temperature difference of the mould is small; and requirement to the temperature in a moulding process of a composite-material propeller is met.

The invention discloses a household type high-efficiency water heater, which includes a shell, one end of the water inlet pipe is evenly installed inside the copper water tank, and a heating water pipe is evenly installed. The bottom end is connected with a surrounding water pipe, and the surrounding water pipe surrounds the outside of the copper water tank. The outside of the heating water pipe is fixedly sleeved with a driving leaf. Both ends of the copper water tank are welded with U-shaped wind deflectors near the bottom of the driving leaf. An arc-shaped air deflector is installed between two U-shaped air deflectors. Compared with the prior art, the invention has the beneficial effect of ensuring that the temperature of the top and bottom ends of the heating water pipe is consistent during the heating process, reducing the cost of water heating. Time, improve the efficiency of water heating, and absorb the emitted heat, reduce heat consumption, and reduce the energy consumption rate during heating, and reduce the cost of using water heaters.

The invention relates to the casting field and provides a die-casting method for an automobile engine cylinder cover. According to the die-casting method for the automobile engine cylinder cover, the automobile engine cylinder cover is provided with an upper convex cover and four side pipes. A die-casting mould of the automobile engine cylinder cover is provided with a casting system, slag collecting bags and a mold cavity provided with four side pipe cavities and an upper convex cover cavity. The die-casting method comprises the following steps that firstly, the die-casting mould with the mold cavity being evenly sprayed with mould release agents is fixed on a die-casting machine and preheated to the set temperature; secondly, smelted alloy liquid is quantificationally input into a charging chamber of the die-casting machine; and thirdly, a pressure head of the die-casting machine presses the alloy liquid into the mold cavity in an injecting mode for forming through the casting system, and the forming process comprises the initial low-speed press-injecting stage and the high-speed press-injecting stage. According to the die-casting method for the automobile engine cylinder cover, the casting defects of air holes and included slag are not produced in the automobile engine cylinder cover.

The columnar heat pipe has sealed vacuum cavity comprising gas exhaust pipe, top cover, tube and bottom board; and has bottom board below the tube, step in the upper end of the tube, capillary cover mounted in the step, top cover on the capillary cover, sealed gas exhaust pipe on the top cover, sintered porous capillary layer in the inner wall of the tube and the inner surface of the bottom board to form work liquid circulating passage together with the capillary cover and work liquid adsorbed to the sintered layer and the capillary cover. The present invention has the beneficial effects caused by the phase change heat transfer of the evaporation and condesation of work fluid inside the columnar heat pipe, including fast heat transfer rate, great heat transfer capacity, homogeneous temperature, high stability, etc.

The invention discloses a process for producing a fine porcelain relief plate painting with high light transmittance. The process comprises the producing steps as follows: step one, preparation of finished clay material; step two, preparation of an adobe base plate; step three, fine carving of decorative patterns and drawings on the adobe base plate; and step four, sintering of the adobe base plate. The process has the advantages as follows: the light transmittance is higher than 50%; the decorative patterns have three-dimensional sense; the adobe base plate is formed smoothly, so that defects such as cracking deformation, air bubbles and the like are avoided; smooth and effective fine carving is guaranteed; the sintering effect is improved, and the qualified ratio of the product is increased; and the plate painting has unique aesthetic sense and artistic sense.

The invention relates to a steel ladle baking device with a lifting-adjustable ladle cover outer ring. The steel ladle baking device comprises a rack, rotating arms, a ladle cover, heat accumulation type burners and a ladle cover outer ring adjusting device. The two rotating arms are arranged, one ends of the rotating arms are connected to the rack, and the other ends of the rotating arms are connected to the ladle cover. The four heat accumulation type burners are arranged and are symmetrically fixed to the ladle cover. The ladle cover outer ring adjusting device is fixed to the rotating arms and the ladle cover, and the ladle cover outer ring can move vertically so that the distance between the lower end of the ladle cover outer ring and the gap of a ladle opening can be controlled within 200 mm. Injection openings of the heat accumulation type burners incline by a certain angle, so that combustion flames have a certain angle when injected into the steel ladle, the flames flow and rotate around the surface of the ladle wall when impacting the inner wall of the steel ladle to form multiple vortexes, and flowing of hot flue gas is accelerated. By means of the steel ladle baking device, the rotating arms can drive the ladle cover and the burners to move vertically, the ladle cover outer ring moves so that the air inlet amount cannot change, a temperature field in the steel ladle is improved to a certain degree, and the lining temperature in all height directions is more uniform.

The invention discloses a rotary heating type curing furnace for a composite propeller. A barrel-shaped curing chamber is formed in a furnace body. A plurality of rotating shafts are arranged in the curing chamber at interval along the axial direction of the furnace body, and the two ends of each rotating shaft are connected with the inner wall of the furnace body in a sliding mode. A center shaftis arranged at the center of the curing chamber along the axial direction of the furnace body, and the center shaft passes through the centers of the rotating shafts in order and is fixedly connectedwith the rotating shafts. A first support shaft and a second support shaft are positioned on the two sides of the center shaft and are connected with the rotating shafts, and a first mould rack and asecond mould rack are respectively hinged with the first support shaft and the second support shaft. According to the rotary heating type curing furnace, the rotating shafts are driven by the centershaft to rotate, and the first mould rack and the second mould rack are driven by the rotating shafts to move up and down, so that hot air in the curing chamber can be guided to flow, and the upper and lower temperatures of the curing chamber are uniform. Therefore, the difference of the upper and lower mould temperatures of a mould is within + / -1 or so, the temperature requirement of the composite propeller in the forming process can be met, and the quality of the propeller is ensured.