9results about How to "Extend warm-up time" patented technology

The invention discloses a method for achieving titanium-aluminum alloy additive manufacturing through an electron beam spot melting process. The method comprises the steps that firstly, after a three-dimensional CAD model of a target product is established, layering slicing is conducted; 2, preheating and heat preservation of the substrate; 3, spreading powder and preheating a powder bed; 4, additive manufacturing process parameters are set, powder melting and solidification are carried out point by point, and a single-layer solid sheet layer is obtained; 5, carrying out secondary preheating treatment on the powder bed and descending the forming platform; and 6, repeating the process to obtain the titanium-aluminum alloy. A discrete point melting technology is adopted to replace a traditional line scanning continuous melting technology, point melting and solidification are carried out on a target area in a powder bed one by one, the size of a molten pool is reduced, the cooling speed of the molten pool is increased, the heat affected zone range of the edge of the molten pool is reduced, the influence time of the heat affected zone is shortened, and the uneven structure caused by aluminum element volatilization and phase change is avoided; and meanwhile, single-process printing of the titanium-aluminum alloy complex part is achieved, the difficulty and cost of the additive manufacturing process are reduced, and the method is suitable for the field of titanium-aluminum alloy additive manufacturing.

The present invention relates to the field of engineering machinery, and discloses a cold start preheating system and engineering machinery. The cold start preheating system includes a fuel preheating module, an antifreeze preheating module, a hydraulic oil preheating module and a main controller. The main controller is configured to: after entering the preheating mode, control the fuel preheating module to start running; when it is determined that the fuel viscosity of the fuel tank is less than a first preset viscosity, control the antifreeze preheating module to start running; when it is determined that the temperature of the battery reaches a first preset temperature, control the hydraulic oil preheating module to start running. The cold start preheating system of the present invention has a short preheating time and a good preheating effect, which can improve the reliability of the engine's smooth cold start in extremely cold areas and shorten the user's waiting time. The cold start preheating system of the present invention can be applied to engineering machinery with a fuel architecture and a new energy architecture.

The utility model relates to the technical field of waste gas treatment, in particular to a VOC waste gas catalytic pretreatment device which comprises a base, a combustion furnace is fixedly mounted on the top surface of the base, an exhaust pipe is mounted at the top end of the combustion furnace, a combustor is mounted at the bottom of the combustion furnace, and a catalytic bed is mounted at the upper part of the combustion furnace; a preheating cylinder is arranged on the periphery of the combustion furnace, and a spiral partition plate located in the preheating cylinder is fixedly installed on the periphery of the combustion furnace. The periphery of the combustion furnace is provided with an air inlet. The periphery of the preheating cylinder is fixedly connected with an air inlet pipe assembly. Through the arrangement of the preheating cylinder, heat in the combustion furnace can be radiated into the preheating cylinder to preheat waste gas in the preheating cylinder, so that the temperature of the waste gas is increased, and the cost of the treatment process is reduced; and the spiral ventilation cavity is formed between the preheating barrel and the combustion furnace through the spiral partition plate, so that the moving path of the waste gas in the preheating barrel is prolonged, the preheating time of the waste gas in the preheating barrel is prolonged, and the preheating effect of the waste gas is improved.

This utility model specifically relates to a drying device for rice processing, comprising an inner drying tank and a heating outer tank. A drying mechanism is located between the inner and outer tanks, comprising a stirring rod, heating wire, temperature monitor, and drive motor. A feeding preheating mechanism is located at the top of the heating outer tank, and its interior includes a feeding assembly and a heat-conducting pipe. The inner and outer tanks are detachably connected via a split-type disassembly mechanism, which consists of a fixing ring, a slot, a locking block, fastening bolts, and threaded holes. A screening mechanism is located at the bottom of the inner drying tank. This utility model not only reduces the humidity of rice entering the inner drying tank, improving the working efficiency and quality of the dried rice, but also enhances the convenience of maintenance.

The invention provides a mugwort charcoal hot patch prepared by adopting a low-temperature slow baking process, and relates to the technical field of heating physiotherapy products. The mugwort charcoal hot patch prepared through the low-temperature slow baking process comprises a breathable inner layer, a mugwort charcoal functional layer, a heating layer and a protective outer layer, the breathable inner layer is made of full-bio-based degradable non-woven fabric, the mugwort charcoal functional layer is close to the breathable inner layer, the core component is mugwort charcoal subjected to composite modification treatment through the low-temperature slow baking process, and the protective outer layer is made of non-woven fabric. The mugwort charcoal functional layer can continuously and stably release active ingredients under the heat action of the heating layer. The mugwort charcoal is prepared by combining a low-temperature slow baking process with composite modification treatment, active ingredients in mugwort can be fully reserved, the mugwort charcoal and the mugwort leaf extract are synergistic at a heating temperature, trace ingredients with soothing, blood activating and aromatic effects can be continuously and stably released, far infrared rays radiated by the infrared emission ceramic powder are combined with thermal therapy, and the health care effect is achieved. And the physiotherapy effect is obviously improved.

The invention relates to the technical field of fermentation culture medium sterilization, in particular to a sterilization method and device for an antibiotic fermentation culture medium, sprayed cold water falls down from top to bottom, and the cooling time is shortened; after a circuit of a second electromagnet is switched on, a vertical plate is driven to move downwards through electromagnetic induction, the vertical plate drives a connecting shaft and a ball core to rotate, a round hole of the ball core rotates to a vertical state, a ball valve is opened, purified water flows in from a water inlet pipe, and a transverse pipe and a U-shaped pipe are cleaned; after a circuit of the first electromagnet is switched on, a vertical plate is driven to move upwards through electromagnetic induction, the vertical plate drives a connecting shaft and a ball core to rotate, a round hole of the ball core rotates to a horizontal state, the ball valve is closed, and cleaning of the pipeline is stopped; the device can be used for automatically cleaning each pipeline after high-temperature sterilization, so that a static culture medium is prevented from being quickly dried at a high temperature and attached to the inner wall of the pipeline, the cleaning difficulty is reduced, meanwhile, the cleaning water consumption is reduced, the economic cost is reduced, and the working efficiency is improved.

The utility model relates to a feeding device of an injection molding machine. The feeding device comprises a scrap iron separating mechanism, a feeding cylinder, a preheating mechanism and an intermittent discharging mechanism, the scrap iron separating mechanism comprises a separating cylinder and a magnetic conveying belt, one end of the magnetic conveying belt extends into the feeding cylinder, the other end of the magnetic conveying belt is located outside the feeding cylinder, and the end located in the feeding cylinder is lower than the end located outside the feeding cylinder; the preheating mechanism is arranged on the feeding cylinder; the intermittent discharging mechanism comprises a first baffle, a second baffle and a power assembly, the first baffle is rotationally arranged in the feeding cylinder, a first discharging opening is formed in the first baffle, the second baffle is located below the first baffle, a second discharging opening is formed in the second baffle, and the first discharging opening corresponds to the second discharging opening; the power assembly is connected with the first baffle and drives the first baffle to rotate. The utility model provides the feeding device for the injection molding machine, which is used for preheating raw materials and can reduce the viscosity of liquid raw materials and enhance the flowability, so that the molding rate of products is improved.

The utility model discloses energy-saving aluminum ore calcining equipment, and relates to the technical field of calcining equipment, the energy-saving aluminum ore calcining equipment comprises a gas collector, a rotary kiln, a discharge bin and a preheater, the preheater comprises a shell and a plurality of partition plates; a feed port and an exhaust port are formed in the top of the shell, and the exhaust port is connected with an inlet of the gas collector through an exhaust pipeline; a discharge port is formed in the bottom of the shell and is connected with an inlet of the discharge bin; an air inlet is formed in the bottom of the shell and connected with the rotary kiln through an air inlet pipeline. The multiple partition plates are connected to the two opposite inner walls of the shell in a crossed mode, and the two opposite sides of the partition plates abut against the other two inner walls of the shell. According to the energy-saving aluminum ore calcining equipment, after high-temperature gas generated in the calcining process of the rotary kiln is introduced into the preheater, the high-temperature gas can circulate in the shell in a snakelike path, the circulating path of the high-temperature gas in the preheater is prolonged, the high-temperature gas makes full contact with uncalcined materials, and therefore the preheating time of the uncalcined materials is prolonged, and the energy-saving effect is achieved. The preheating effect is improved.

This invention discloses a waste aluminum recycling device, including a melting furnace and an electromagnetic stirrer disposed below the melting furnace. A frustum-shaped outer shell is inserted from above into the middle of the melting furnace. A conical auger body is disposed inside the frustum-shaped outer shell. A perforated cylinder is installed below the frustum-shaped outer shell. The portion of the frustum-shaped outer shell inside the melting furnace has densely packed exhaust holes. A buffer chamber is inserted above the melting furnace and is located outside the frustum-shaped outer shell. At least three heat recovery pipes are evenly installed between the buffer chamber and the feed hopper. This invention incorporates a perforated cylinder to ensure that waste aluminum can uniformly reach the interior of the molten aluminum in the vertical direction. Exhaust holes are provided on the lower side wall of the frustum-shaped outer shell to prevent gas from reaching the interior of the molten aluminum and causing air bubbles to remain inside the molten aluminum.