6results about How to "Good preheating effect" patented technology

The application discloses an energy-saving multifunctional casting blank flame cleaning device, wherein fixed end pistons and floating end pistons are additionally arranged in the cleaning oxygen cavity of the upper and lower horizontal distributor piston cylinder assembly, the cleaning oxygen cavity is divided into three chambers, i.e., a fixed end chamber, an intermediate use chamber and a floating end chamber, the casting blank cross section is divided into eight optional cleaning areas, PID adjustment is performed on the other eight cleaning areas by using independent valve stations, multifunctional combination of the eight optional cleaning areas is realized, the surface defects of the casting blank can be cleaned in a fixed area and a fixed depth, unnecessary area cleaning is reduced, metal loss is reduced, the yield of finished products is increased, cost reduction and benefit increase are achieved, and the energy consumption is reduced. For hot blank, oxygen pressure of the relatively low temperature area at the edge, such as the top fixed end, the top floating end, the bottom fixed end and the bottom floating end, is increased to obtain a target cleaning depth, improve the hot blank hot delivery rate, reduce the energy consumption and help green metallurgy.

The utility model discloses a preheating device for seat cushion assembly, which belongs to the technical field of seat cushion assembly and comprises a mounting rack, a conveying belt is mounted in the mounting rack, a second motor is mounted at the lower right corner of the mounting rack, a hot air channel is connected to the upper portion of the mounting rack through bolts, and the second motor is mounted at the lower right corner of the mounting rack. A first heating assembly, a second heating assembly and a first motor are installed above the hot air channel from left to right. A conveying belt is arranged to drive a cushion to move into a hot air channel from a second blocking pad, at the moment, two sets of power source boxes are matched with a U-shaped heating pipe to guide heat into the hot air channel, meanwhile, a first motor drives a fan assembly to blow heat in the hot air channel to all parts of the hot air channel, and after the cushion is heated, the heat in the hot air channel is heated. The heated cushion is taken out from the position of the blocking pad, and finally the cushion is manually assembled, so that the cushion can be uniformly heated, the preheating effect is good, and subsequent manual assembly is facilitated.

The double-circulation perlite ore sand gradient preheating system utilizing the waste heat of the tail gas of the fuel gas expansion furnace is provided with the double-return-stroke channels, the material heating time is prolonged, the heating temperatures of the double-return-stroke channels are different, low-temperature preheating is conducted firstly, then medium-temperature preheating is conducted, and the heating efficiency is improved. And most free water and part of bound water in the ore sand are removed more slowly and mildly. According to the technical scheme, an outer-layer material channel is formed between an outer pipe and a middle pipe, and a first spiral conveying structure is arranged on the inner wall of the outer-layer material channel; an inner-layer material channel is formed between the middle pipe and the inner core pipe, and a second spiral conveying structure is arranged on the inner wall of the inner-layer material channel; the heating cavity consists of an inner cavity of the inner core tube; and the rotating direction of the first spiral conveying structure is opposite to that of the second spiral conveying structure, so that materials are conveyed from the first end to the second end in the outer-layer material channel, enter the inner-layer material channel from the second feeding hole in the second end and are conveyed from the second end to the first end in the inner-layer material channel.

The utility model relates to the technical field, in particular to an efficient waste heat utilization device for drying glutinous rice flour, and aims to solve the technical problem that the glutinous rice flour with higher density cannot be uniformly preheated even though waste heat is used for preheating in the prior art. The two ends of the gas injection pipe in the conveying cylinder are communicated with two gas distribution pipes, a plurality of spiral pipes with the same rotating direction and equal screw pitches are communicated between the two gas distribution pipes, the inner-layer spiral pipe is connected with the gas injection pipe, the outer-layer spiral pipe is in contact with the inner wall of the conveying cylinder, and the gas injection pipe in the area covered by the spiral pipes is arranged in a solid mode; the conveying cylinder is fixed through the support, high-temperature gas is guided into the spiral pipe, the temperature of the spiral pipe rises to heat air in the conveying cylinder and make direct contact with glutinous rice flour at the same time, and the glutinous rice flour is evenly preheated without dead corners while conveyed. Therefore, the problem that hot air cannot preheat lower-layer glutinous rice flour and raise dust in the prior art is solved.

The present application provides a kettle cover of an electric heating tobacco kettle, which comprises a kettle body with a tobacco chamber, a tobacco cup heated by a heating element arranged in the tobacco chamber, and a kettle cover detachably connected to the top of the tobacco chamber to seal an opening of the tobacco chamber, wherein the kettle cover comprises a hollow cover body and a plurality of heat-conducting sheets arranged in the hollow cover body with a spacing, the top surface of the hollow cover body is provided with an air inlet hole for fresh air to enter, the bottom surface of the hollow cover body is provided with an air inlet hole leading to the tobacco cup, the heat-conducting sheets are provided with air guide holes, the heat-conducting sheets arranged with a spacing form an air passage in the hollow cover body through the air guide holes, and the two ends of the air passage correspond to the air inlet hole and the air inlet hole, respectively. The fresh air entering the kettle is preheated step by step through the kettle cover to enter the tobacco cup. The air passage for preheating is formed by the multiple layers of heat-conducting sheets arranged with a spacing in the kettle cover, the preheating effect is good, and the temperature fluctuation in the tobacco cup is reduced.

The utility model discloses a kind of winding tension constant control's storage reel structure and winding machine, belong to plastic tubular product forming technical field. Including: storage reel, tension control mechanism, mounting bracket, driving mechanism, front tape feeding mechanism, rear tape feeding mechanism;Front tape feeding mechanism, rear tape feeding mechanism are symmetrically arranged in mounting bracket both sides and respectively include carousel and storage reel, driving mechanism drives two carousels synchronous rotation, realize reinforcing belt synchronous tape feeding;Tension control mechanism is integrated in storage reel, using bidirectional friction compensation mechanism: axial constant torque increases tension with the decrease of roll diameter, radial elastic friction then reduces tension with the decrease of roll diameter, the both superposition makes tape feeding whole course tension constant.The utility model uses bidirectional friction compensation mechanism to realize the constant control of winding tension, symmetric double carousel structure realizes the relative uniform distribution of transmission mechanism both sides load, runs stably and structure is compact, manufacturing cost is low, reduces the winding machine center height, and need not to dig foundation pit installation.