42results about How to "Reduce temperature drop rate" patented technology

The invention discloses a quenching device after hot rolling forming of steel balls. The quenching device after hot rolling forming of the steel balls comprises a box body; the bottom of the inner wall of the box body is fixedly connected with a quenching box; a first fixing plate and a second fixing plate are sequentially and fixedly connected to one side between the opposite two sides of the inner wall of the box body from top to bottom; the top of the first fixing plate is rotationally connected with a spiral feeding roller through a pair of rotating bases; one side of the bottom of the inner wall of the box body is fixedly connected with a first motor; the output shaft end of the first motor is fixedly connected with a speed reducer through a coupler; a rotating device is fixedly connected with the top of the second fixing plate; one side of the rotating device is fixedly connected with a rotating plate through a rotating shaft; a moving device is fixedly connected with the top ofthe inner wall of the box body; and a heating pipe is fixedly connected with the bottom of the moving device. The invention relates to the technical field of steel ball machining. The quenching deviceafter hot rolling forming of the steel balls solves the problem that the steel balls are affected by temperature in the transferring process, meanwhile solves the problem of manual flow distributing,reduces the labor amount and improves the production efficiency.

The invention relates to a milk supplementing device for suckling pigs. The milk supplementing device comprises a trough, a trough cover box, nipples, separation rods and a lifting frame. The milk supplementing device is simple in structure, reasonable in design and detachable. When the trough cover box and the nipples are not assembled, the milk supplementing device can be used as a crib of granular fodder and dry powdered fodder. Accordingly, the milk supplementing device is multifunctional and suitable for pig farms of different sizes and pigs of different days, and the utilization of the device is improved. Under the condition that new-born suckling pigs are short of milk or sows can not provide enough milk, the milk supplementing device can supplement milk for several suckling pigs, therefore, the survival rate and the growing speed of the suckling pigs can be improved, labor intensity of workers is lowered, and economic benefits of the pig farms are improved.

The invention discloses a control method of an air conditioner. The outdoor unit of the air conditioner includes an outdoor heat exchanger, a first fan and a second fan. The air outlet surface of the first fan is opposite to the indoor heat exchanger. The air outlet surface of the second fan is arranged on the lower part of the outdoor heat exchanger. The control method of the air conditioner includes the following steps: after the air conditioner enters the cooling mode, and the outdoor temperature is lower than the first preset temperature, the outlet temperature of the outdoor heat exchanger is obtained. After the air conditioner enters the cooling mode, the first fan and the second fan are in the running state; when the outlet temperature is lower than the second preset temperature, lower The rotational speed of a target fan, where the target fan includes at least one of the first fan and the second fan. The invention also discloses an air conditioner and a computer-readable storage medium. The frequency of starting and stopping of the compressor of the present invention is relatively low.

The invention discloses a laser etching method and device, a substrate electrode and an electroluminescent device. The laser etching method comprises a step of etching an object to be etched by laser beams, wherein the object to be etched is provided with at least one region to be etched, and the laser beams include a main laser beam for gasifying a conducting material in the region to be etched and auxiliary laser beams for lowering the temperature falling rate in a space corresponding to the edge of the region to be etched. Two types of laser beams are adopted in the etching step: the main laser beam can gasify the conducting material in the region to be etched while the auxiliary laser beams are used for raising the temperature in the space corresponding to the edge of the region to be etched, so that the temperature falling rate in the space corresponding to the edge of the region to be etched is lowered, the gasified conducting material is prevented from being deposited due to over low temperature in the space corresponding to the edge of the region to be etched during outward diffusion of the gasified conducting material from the space corresponding to the region to be etched, and the formation of bumps on the surface of the object to be etched is avoided.

The invention discloses a water multi-unit system control method, device, a computer readable storage medium and a water multi-unit system. The method comprises steps: whether a room where the water multi-unit system is located has a cooling load requirement or not is determined; if the room where the water multi-unit system is located has the cooling load requirement, whether the set cold accumulation capacity of a cold accumulation tank reaches a set cold capacity threshold value or not is determined; and if the cold accumulation capacity in the cold accumulation tank does not reach the setcold capacity threshold value, the water multi-unit system is controlled to start a cold accumulation mode and a refrigeration mode at the same time, and the output cold accumulation capacity of the cold accumulation tank is controlled according to the current starting number of indoor units in the multi-unit system. According to the scheme, the problem that the comfort of a user is poor due to the fact that the indoor unit and the outdoor unit of the water multi-unit machine cannot be linked can be solved, and the effect of improving the comfort of the user is achieved.

The invention discloses a molten steel thermal insulating agent and belongs to the field of thermal insulating agents. The molten steel thermal insulating agent comprises the following components of,by mass, 70-100 parts of carbonized rice husk ash, 1-10 parts of carbon source and 1-30 parts of silicon source, and the carbonized rice hull ash comprises the following elements of, by mass, 2%-17% of C, 40%-60% of Si, and the balance H, O, S, Ca, Fe and P. Water of the carbonized rice husk ash is less than 3% of the total mass of the thermal insulating agent. The bulk density of the molten steelthermal insulating agent is 0.18-0.35 g / cm<3>. Compared with carbonized rice hulls of a honeycomb structure, the molten steel thermal insulating agent provided by the invention can make the surface temperature of molten steel be lowered to 0.78 DEG C.min<-1> from 1.56 DEG C.min<-1> maximally. The molten steel thermal insulating agent provided by the invention is low in heat conductivity coefficient, good in thermal insulating effect, excellent in spreadability, free of caking, and low in production cost.

The embodiment of the invention provides a refrigerator capable of preventing the upper surface of a middle beam from being frozen, and relates to the technical field of refrigeration equipment. The refrigerator is provided for solving the problem that a lead of a heating device of a middle beam of an existing refrigerator is likely to be affected with cold and damp so as to be aged. The refrigerator capable of preventing the upper surface of the middle beam from being frozen comprises a box body and door bodies used for sealing the box body. The middle beam is arranged at the position of an opening of the box body. The middle beam is of a hollow structure, a heating device is arranged inside the middle beam, and the middle beam is filled with heat insulation materials. The end of the middle beam is in sealed connection with the inner wall of the box body. A lead of the heating device is electrically connected with a control circuit of the refrigerator after penetrating out of the end of the middle beam and the inner wall of the box body. The refrigerator capable of preventing the upper surface of the middle beam from being frozen is used for storing goods at a low temperature.

The invention provides a high gun position vacuum refining method based on cluster top lances. The cluster top guns have a powder channel located in the center, a main oxygen channel located on the periphery of the powder channel, and an oxygen supply channel located on the periphery of the main oxygen channel; Oxygen enters from the main oxygen channel and the auxiliary oxygen channel to form the main oxygen flow and the auxiliary oxygen flow respectively. Under the protection of the main oxygen flow, the powder is injected into the molten steel together with the main oxygen flow. The carbon in the liquid reacts to generate carbon monoxide, and the carbon monoxide overflowing the molten steel and the oxygen flow that surrounds and accompanies them undergo secondary combustion to heat the vacuum tank to reduce the temperature drop of the molten steel. The oxygen-supporting flow of the present invention forms a surrounding accompanying flow outside the central supersonic jet, which makes the expansion and attenuation of the central supersonic jet smaller, the supersonic jet is longer, and the penetration depth and stirring intensity of the oxygen jet to the molten pool are improved. Improve the reduction of molten steel splash and sticky slag at the tip of the gun, and prolong the service life.