31results about How to "Shorten cooling time" patented technology

The invention provides a method for regulating and controlling cooling time after Joule heating and a high-entropy oxide electrocatalyst based on the method, and belongs to the technical field of electrocatalytic electrolysis of water. According to the method, the relationship between the graphite substrates with different mass area ratios and the cooling time is determined based on the Newton's law of cooling by carrying out volume segmentation on the graphite substrates; the structure and performance of the high-entropy oxide electrocatalyst are regulated and controlled on the basis of a cooling time regulation and control strategy; the prepared high-entropy oxide electrocatalyst has excellent oxygen evolution reaction catalytic activity in an alkaline environment, the structure of the high-entropy oxide electrocatalyst with the cooling time of 0.3 s is a nanowire assembled by fine nano-particles, the high-entropy oxide electrocatalyst shows the optimal electrochemical performance, and under the current density of 10 mA cm <-2 >, the high-entropy oxide electrocatalyst has excellent oxygen evolution reaction catalytic activity. And the overpotential is only 219 mV. The method provided by the invention is simple and efficient, and can be widely applied to preparation and performance optimization of the electrocatalyst.

The invention discloses a cold head container for a liquid-helium-free superconducting magnet and a using method of the cold head container, and belongs to the technical field of superconducting magnetic resonance equipment.The cold head container comprises a first-level container heat transfer block and a second-level container heat transfer block, a sleeve is arranged above the first-level container heat transfer block, and the bottom end of the sleeve is fixedly communicated with a through hole of the first-level container heat transfer block; an upper flange is fixedly installed at the top end of the sleeve, a connecting flange is fixedly installed above the upper flange, a plurality of evacuation sealing valves are arranged on the peripheral side of the connecting flange and communicate with the interior of the sleeve, and a plurality of evenly-distributed flexible cold guide plates are fixedly connected to the peripheral side of the container primary heat transfer block. A connecting pipe and a corrugated pipe are arranged between the container primary heat transfer block and the container secondary heat transfer block; the using method of the cold head container comprises the steps that S1, the magnet is pre-cooled; s2, dismounting the pre-cooling assembly; s3, mounting the refrigeration component; according to the cold head container, the pre-cooling time of the magnet can be remarkably shortened, and meanwhile, the refrigeration part is more convenient to replace.

This utility model discloses a spiral cooling device for cooling grease, including a fixed base, with upright plates fixedly installed on both sides of the top of the fixed base. A lead screw is rotatably connected between the two upright plates, and a displacement block that is slidably connected to the fixed base is threadedly connected to the middle of the lead screw. A cooling housing is provided at the top of the displacement block, and a feeding assembly is fixedly installed on one side of the cooling housing. This spiral cooling device for cooling grease, through the setting of a stirring mechanism, drives the first connecting plate and the second connecting plate to move synchronously. The cooling rod cools the cooling water in the cooling housing, and the rotation of the cooling rod increases the contact area between the cooling water and the grease in the spiral conveying pipe. The displacement block slides along the lead screw, causing the cooling water in the cooling housing to collide laterally with the spiral conveying pipe, shortening the cooling time of the grease in the cooling housing and improving the cooling efficiency of the grease.

The utility model belongs to the technical field of heating furnaces for preparing and storing hydrogen materials, and particularly discloses a cooling and stirring structure of a heating furnace for preparing and storing hydrogen materials, which comprises a cooling fan arranged outside a heating furnace body and a cooling component positioned in the heating furnace body, and the cooling fan is communicated with the cooling component through an air inlet pipe; a supporting assembly is arranged on the outer side of the air inlet pipe and connected with the cooling assembly, an air cylinder is arranged at the top of the heating furnace body, and the output end of the air cylinder is connected with the supporting assembly and used for driving the cooling assembly to move vertically. The cooling assembly is arranged in the heating furnace body, the cooling assembly is communicated with the external cooling fan to further cool a melt-spinning sheet falling off from the cooling roller in an accelerated mode, the air cylinder is connected with the cooling assembly, ascending and descending of the cooling assembly are achieved, and the melt-spinning sheet is crushed and stirred. The specific surface area of the material is greatly increased, the surface sites of the hydrogen storage material for adsorbing hydrogen are increased, and the hydrogen storage efficiency is effectively improved.

The application discloses a heat-resistant tool for fixing a thermocouple and a temperature measuring method of a shaft furnace. The heat-resistant tool comprises a fixing assembly and prefabricated cement blocks. The fixing assembly comprises a base, a supporting column and a locking structure. The locking structure is fixed above the base through the supporting column. Two prefabricated cement blocks capable of being buckled into a column are fixed in the locking structure. The temperature measuring method of the shaft furnace comprises the following steps: hoisting and feeding the temperature measuring tool and the fixing assembly into the shaft furnace after fixing; fixing the thermocouple by using the locking structure; measuring the temperature; pulling out the thermocouple under high temperature; hoisting out the fixing assembly and the broken prefabricated cement blocks of the heat-resistant tool together with the temperature measuring tool to complete the temperature measurement. The heat-resistant tool for fixing the thermocouple has the advantages of simple structure, convenient operation and reusable fixing assembly. After the temperature measurement is completed, the thermocouple can be directly pulled out under high temperature, and the thermocouple will not be damaged when being pulled out, thereby saving the cooling time and improving the work efficiency.

The utility model provides a vacuum cup capable of cooling quickly, which relates to the field of vacuum cups and comprises a radiating cover, a motor cover plate, fan blades, a heat conducting rod, phase change particles, a battery and a spring. The anode end of the battery is tightly attached to the lower side surface of the anode current-conducting plate, and the cathode end of the battery is tightly attached to the upper side surface of the cathode current-conducting plate; the fan blades are fixedly connected to a motor shaft of the fan motor through keys. The heat dissipation cover is bonded with the anode conductive contact piece, and the heat dissipation cover is bonded with the cathode conductive contact piece; the top ends of the springs are welded to the lower side face of the pressing plate, and the bottom ends of the springs are welded to the heat preservation cover. The heat conduction rod is welded to the center of the lower side face of the sealing cover. Through the arrangement of the fan motor, the fan blades, the phase-change particles and the heat conducting rod, quick cooling of overheated drinking water is achieved, the cooling time of the drinking water is saved, and the problem that a traditional vacuum cup cannot quickly cool the overheated drinking water is solved.

The present invention relates to a refrigeration display cabinet with good refrigeration effect. The cabinet body is provided with an inner liner and a mounting bottom shell. The inner liner and one side of the mounting bottom shell are enclosed to form a receiving inner cavity. One side of the mounting bottom shell and the inner liner form an air guide inner cavity. A baffle is provided in the air guide inner cavity. The evaporator is located at the upper end of the compressor. A transmission pipe is connected between the evaporator and the air guide inner cavity. The mounting bottom shell is provided with a plurality of air inlets and a plurality of air outlets on the inner side of the receiving inner cavity. An air inlet channel is formed between the baffle and the mounting bottom shell. The air inlet channel is connected to the air guide inner cavity. The air outlet is connected to the air guide channel. An exhaust fan connected to the air inlet is provided on the mounting bottom shell. An exhaust hole connected to the exhaust fan is provided on the inner liner. The present invention realizes the circulation of hot and cold air in which hot air is discharged and cold air is supplemented, thereby realizing the effect of rapid internal refrigeration, effectively improving the refrigeration effect of the refrigeration display cabinet, and shortening the refrigeration time.

The invention discloses a continuous casting and continuous forging method for smelting metal by using an electron beam cold bed furnace, which is characterized in that a process for smelting the metal by using the electron beam cold bed furnace is improved, the temperature is directly increased to the temperature required by cast ingot forging in an ingot chamber and maintained for a preset time for constant-temperature treatment, and the cast ingot subjected to the constant-temperature treatment can be directly cast and processed. And the forging time of the product is greatly shortened, and the efficiency is improved.

This invention discloses a rapid cooling device and method for beverage vending machines. By setting up an insulated enclosure structure, the entrance to the dispensing compartment is divided into a rapid cooling compartment entrance and a normal temperature entrance. Movable baffles are installed on the sides of the insulated enclosure structure, allowing beverages to reach the dispensing compartment via either the rapid cooling compartment entrance or the normal temperature entrance, depending on the user's needs. A contact evaporator is installed inside the rapid cooling compartment, and the contact evaporator has a channel for beverages to fall through. A sealed top cover and a locking bottom cover are installed at the bottom of the rapid cooling compartment, ensuring a sealed space and improving cooling efficiency while achieving beverage cooling. The contact evaporator is connected to the compressor. During cooling, the contact evaporator is in close contact with the beverage falling into the rapid cooling compartment, enhancing the heat exchange area and efficiency of the rapid cooling compartment, shortening the cooling time, and improving cooling efficiency while reducing energy consumption.

The invention relates to a refrigerating system and refrigerating equipment. The refrigerating system comprises a heat dissipation device, and a water storage device, an atomization device and a condensation device which are communicated in sequence, wherein the water storage device is used for inputting a water source to the atomization device; the atomizing device is arranged on one side of the condensing device and used for atomizing a water source into water mist and spraying the water mist to the condensing device; the heat dissipation device is used for providing wind power for the condensing device for heat dissipation. By means of the arrangement, water mist and air are mixed to form humidifying cooling airflow, the humidifying cooling airflow can remarkably improve the surface heat exchange efficiency of the condensing device, the influence of the environment temperature on the heat dissipation effect of the condensing device is reduced, the heat dissipation effect of the condensing device is improved under the working condition of the condensing device with the same size, and therefore the refrigerating time of a refrigerating system is shortened, and the refrigerating efficiency is improved. The refrigeration efficiency is improved.

The invention belongs to the technical field of skin cream, and particularly relates to moisturizing skin cream for repairing at night and a preparation method of the moisturizing skin cream. A top cover is mounted at the top of the working box; a motor is fixedly connected to the inner side wall of the bottom of the working box; the output end of the motor is fixedly connected with a stirring cooling barrel; a fixing rod is fixedly connected to the center of the bottom of the top cover; the middle part of the fixed rod is fixedly connected with a stirring impeller; a plurality of groups of heat conducting plates are fixedly connected to the side wall of the stirring and cooling barrel; by adding the moderator during preparation of the moisturizing skin cream for repairing at night, the irritation of the moisturizing skin cream for repairing at night can be neutralized, so that the moisturizing skin cream is softer during use, and the irritation to the skin of a user is reduced.

The invention discloses a low-constant temperature synthesis reaction device for polycarboxylic acid water-reducing agent, and relates to the field of polycarboxylic acid water-reducing agent synthesis. The device comprises a reactor, a cooler and a heat exchanger. The top of the reactor is provided with a feed port and an addition port, the bottom is provided with a discharge port, the shell of the reactor has an interlayer, the lower part of the interlayer is connected to a cooling water inlet pipe, and the upper part is connected to a cooling water outlet pipe. The cooler is connected to the other end of the cooling water inlet pipe and the cooling water outlet pipe. The heat exchanger comprises a plurality of heat exchanger plates in parallel, and two adjacent heat exchanger plates are respectively connected to the reactor and the cooler; wherein, a liquid inlet pipe and a liquid outlet pipe are connected between the reactor and the heat exchanger, and a water inlet pipe and a water outlet pipe are connected between the cooler and the heat exchanger. The synthesis device circulates and continuously cools the reaction liquid by introducing the cooling water in the reaction liquid and the cooler into adjacent heat exchanger plates respectively, thereby greatly improving the cooling efficiency and synthesis effect, and being able to maintain a constant temperature all the time.

The present invention discloses a method for measuring low-temperature viscosity, and relates to the technical field of lubricating oil detection, evaluation and diagnosis. Before measuring the viscosity of the sample to be tested, the sample to be tested is cooled, and the cooling includes: gradient cooling of the sample to be tested according to the test temperature requirement of the sample to be tested, and then placing the sample to be tested after the gradient cooling on a Brookfield viscometer for testing. The gradient cooling method shortens the cooling time as a whole, and avoids the situation where the sample to be tested is cooled unevenly. It not only realizes the rapid cooling of the sample, improves the cooling efficiency, and effectively shortens the viscosity test time, but also can realize the accurate measurement of the viscosity of the sample to be tested, and reduces the viscosity error of the sample to be tested caused by the measurement method. Objectively, the method error caused by the method itself is reduced.

The application relates to a multi-station multifunctional rotary welding machine, belonging to the technical field of automatic welding equipment, which comprises a protective shell and a shell, a touch screen and control buttons are arranged on the protective shell, the shell is arranged on one side of the protective shell, the upper end of the shell is open, a rotating plate is horizontally arranged in the shell, a rotating assembly for driving the rotating plate to rotate is arranged in the shell, a plurality of clamping assemblies are arranged on the upper surface of the rotating plate, the plurality of clamping assemblies are arranged along the circumference of the rotating plate in sequence, a positioning pin for workpiece positioning is arranged at the clamping assembly, the positioning pin is connected with the upper surface of the rotating plate, a welding gun is connected with the inner wall of one side of the shell, a cold gas nozzle is connected with the inner wall of one side of the shell, and the end of the cold gas nozzle is arranged towards the upper surface of the rotating plate. The application has the effect of improving workpiece welding efficiency.

The utility model discloses a novel heating and cooling control system for a urea synthesis tower, which relates to the technical field of urea synthesis towers and comprises a heating system and a cooling system which are respectively communicated with the bottom and the top of the urea synthesis tower. The heating system comprises a top heating pipeline and a bottom heating pipeline, the top heating pipeline is communicated with a material outlet in the top of the urea synthesis tower, and the bottom heating pipeline is communicated with a liquid discharge port in the bottom of the urea synthesis tower; the cooling system comprises a condensation liquid inlet pipeline at the top and a condensation gas inlet pipeline at the bottom, the condensation liquid inlet pipeline is communicated with the top heating pipeline, and the condensation gas inlet pipeline is communicated with a liquid discharge port at the bottom of the urea synthesis tower. The device is reasonable in design, the upper part and the lower part of the synthesis tower are simultaneously heated and cooled, the temperature of each point of the synthesis tower is uniformly and synchronously increased and decreased, and the temperature difference between the lining and the barrel is less than 30 DEG C.

The invention provides a cooling system and a cooling method for a solid temperature swing adsorption reactor. The system comprises a freezing dryer, a separator and the temperature swing adsorption reactor, an inlet of the refrigeration dryer is used for being communicated with an air source, and an air outlet of the refrigeration dryer is connected with an air inlet of the separator. Wherein the freezing dryer is used for deeply dewatering and pre-cooling entering air and then conveying the air to the separator; an air outlet of the separator is communicated with an air inlet of the temperature swing adsorption reactor through an air direct blowing pipeline; wherein the separator is used for separating liquid water mist and tiny impurities in entered cold air and then conveying the separated cold air to the temperature swing adsorption reactor for cooling. According to the system, deep water removal and pre-cooling of air are realized on the basis of ensuring high efficiency of air direct blowing cooling, the damage of water to the performance of an adsorbent is avoided, and high-efficiency and safe cooling of the adsorbent is realized.

The utility model discloses an anti-sticking master batch cooling device for polyurethane film production, which relates to the technical field of design of polyurethane film production devices and comprises a fixed base, a cooling stirring unit and a cold air cooling component. The upper side surface of the fixed base is fixedly connected with a supporting and fixing shell, a cold air cooling assembly is arranged in the supporting and fixing shell, the cooling and stirring unit comprises material containing barrels, a feeding pipeline, a discharging sealing plate and a fixed top plate, and the upper side surface of the supporting and fixing shell is fixedly connected with one material containing barrel through a supporting frame; the inside of the feeding hole in the material containing barrel is fixedly connected with the feeding pipeline in a clamped mode, in the heat dissipation process, contact between the master batch and cold air is more sufficient, heat dissipation can be conducted on the accumulated inside, the heat dissipation time is shortened, the anti-sticking master batch is stirred more evenly, and the heat dissipation cost is reduced.

The utility model belongs to the technical field of medicine manufacturing, and particularly relates to a medicine preparation tank capable of rapidly cooling and heating. Comprising a batching tank, a heat exchange device and a jacket heat exchange device, the jacket heat exchange device is used for storing a heat exchange medium and heating or cooling medicine in the batching tank through the heat exchange medium, and the heat exchange device is used for heating or cooling the heat exchange medium flowing between the jacket heat exchange device and the batching tank. According to the medicine preparation tank capable of rapidly cooling and heating, the heat exchange medium is directly heated and cooled through the heat exchange device, temperature adjustment is achieved, the heat exchange medium does not need to be replaced, and the problem of mutual pollution caused by difference of a heating medium and a cooling medium in a traditional process is solved; the purity and the safety in the medicine preparation process are effectively improved. The tedious steps of medium emptying, cleaning, refilling and the like are not needed, so that according to the scheme, the cooling time can be greatly shortened to several minutes or even shorter, and the temperature adjusting time is remarkably shortened.

The utility model relates to a temperature control system and test equipment. The temperature control system comprises a refrigeration module and a cooling liquid module. The refrigeration module comprises an evaporator located in a refrigerant circulation loop of the refrigeration module. The cooling liquid module comprises a cooling liquid flow path, a first water tank, a second water tank, a circulating pump and a control valve set. The cooling liquid flow path comprises a first flow path and a second flow path which are communicated in parallel, the first water tank is located in the first flow path, and the evaporator is used for cooling cooling liquid flowing in the first flow path. The second water tank is located in the second flow path, and the circulating pump is located in the cooling liquid flow path and used for providing power for promoting cooling liquid to flow in the first flow path and the second flow path. The control valve set is arranged on the cooling liquid flow path and used for controlling on-off of the first flow path and the second flow path. According to the technical scheme, the working efficiency of the temperature control system can be improved.

The application relates to a smart park energy operation and maintenance management method based on big data applied to the technical field of energy operation and maintenance management, wherein through the design of a fault prediction unit and a power consumption redistribution unit, power consumption equipment can be reselected at least twice, so that the power supply mode of the power consumption equipment is maintained in a safe and stable state, compared with the prior art, the occurrence of unplanned power outage is greatly reduced, and the economic loss caused by the unplanned power outage to the production activities of the smart park is effectively reduced; in cooperation with the setting of a contact precooling unit, the switch contact of a static switch (STS) can be pre-cooled in advance before power supply switching, the temperature peak value of the switch contact after switching can be effectively reduced in the vertical direction, the cooling time of the switch contact after switching can be reduced in the horizontal direction, the stable switching of the static switch (STS) to the power supply mode is effectively maintained, the smart power supply in the park is effectively maintained, and the stable operation of the power consumption equipment in the park is ensured.

The present application relates to sintering furnace field, disclose a kind of atmosphere box type glue removal sintering furnace with quick cooling function, including furnace body and heating mechanism and air supply mechanism being arranged in the inside of furnace body, the heating mechanism is arranged at the top of the furnace cavity, the output end of the air supply mechanism is connected with the inside of the furnace body, the air supply mechanism is from left to right or from right to left air supply after the heating mechanism is started for predetermined time and forms hot air circulation in the furnace cavity, the furnace body is equipped with rotatable furnace door in front end face, the inner wall of the furnace door is equipped with vent plate, the rear of the vent plate is equipped with heat preservation layer;The present application improves the existing hot air circulation system, solves the problem of low subsequent heat dissipation efficiency due to the design of heat preservation layer;By setting the timing and direction of air supply path, the circulation and discharge of hot air are realized, the uniform distribution of furnace temperature is achieved during the heating stage, the residual heat is quickly removed after stopping heating, and the overall heat dissipation efficiency is improved.

The present application belongs to the technical field of refrigeration and low temperature engineering, and discloses a throttling refrigerator, which comprises a capillary bundle and a shell, the capillary bundle comprises a plurality of capillary tubes filled and arranged in the shell, the end portions of the plurality of capillary tubes are flush arranged, the first end of the capillary bundle is a working medium inlet, the second end of the capillary bundle extends to the bottom of the shell and has an expansion gap with the bottom of the shell, the plurality of capillary tubes have a backflow gap therebetween, and a backflow outlet is arranged on the side wall of the shell close to the first end of the capillary bundle. The capillary bundle is arranged as a fluid throttling channel, the arrangement of the capillary bundle is flexible and convenient, the setting process is simple, the three-dimensional space of the shell can be fully utilized, the space utilization rate of the shell is improved, the capillary bundle can be arranged more, the overall flow of the fluid channel is increased, the channel is composed of a plurality of capillary tubes, the refrigerator has larger flow and refrigerating capacity, and the refrigeration performance is improved.

The utility model relates to the technical field of collecting pipes, and discloses a collecting pipe of an automobile air conditioner evaporator, which comprises a pipe body, a pipe side body is arranged on the front side of the pipe body, connecting areas are arranged on the edge portions of the upper end and the lower end of the pipe side body, and concave-convex points are arranged on the connecting areas. The concave-convex points are located on the inner side of the pipe side body and evenly distributed at the position of the connecting area, and concave-convex strips are arranged in the middle of the side wall of the pipe side body. The concave-convex surfaces are elaborately designed on the side edges of the collecting pipes, and the physical phenomenon that water flow accelerates to flow when passing through the convex points is ingeniously utilized, so that the flow of refrigerants in the air conditioning system is remarkably accelerated, the cooling time of the inner space of an automobile is greatly shortened through the acceleration effect, and the working efficiency of the air conditioning system is improved; compared with a conventional structure, it is ensured that a refrigerant can uniformly flow in the evaporator, it is ensured that the evaporator can give full play to the efficient heat exchange function of the evaporator, and the purpose of rapidly reducing the temperature in an automobile is achieved.

This utility model belongs to the field of rice processing, specifically a rice cooling bin, including a processing box; the inner wall of the processing box has a sliding groove, a driving component is set on one side of the top of the processing box, and a square groove is set on the side of the processing box, with a cooling component on the surface of the square groove; the driving component includes a driving motor, the output end of which is fixedly connected to a reciprocating lead screw through the top of the processing box, a slider adapted to the sliding groove is set on the surface of the reciprocating lead screw, the bottom end of the reciprocating lead screw is rotatably connected to the bottom surface of the sliding groove, a connecting rod is rotatably connected to the surface of the slider, and a gear is fixedly connected to one end of the connecting rod; through the linkage design of the reciprocating lead screw and gear plate of the driving component, the driving slider drives the fixed rod and the annular stirring ring to rotate while moving up and down, breaking up the accumulated rice and forming a vortex, solving the problem of uneven cooling caused by the gravity accumulation of rice in traditional rice cooling bins, improving cooling efficiency, and ensuring that the surface temperature difference of each grain of rice is reduced.

The invention discloses a power semiconductor device testing device, which comprises a liquid supply assembly, a mounting rack, clamping plates and clamping assemblies, and is characterized in that the mounting rack is internally provided with at least two slidable clamping plates, and the left and right sides of the mounting rack are provided with the clamping assemblies; the clamping end of the clamping assembly movably penetrates into the mounting frame and abuts against the opposite clamping plates, and the multiple clamping plates are used for jointly clamping the power semiconductor device; a water tank is arranged in the clamping plate, the liquid supply assembly communicates with the water tank, and the liquid supply assembly is used for conveying cooling liquid or heating liquid to the water tank. The liquid supply assembly conveys the heating liquid and the cooling liquid to the clamping plate in sequence, so that the heating and cooling circulation process of the power semiconductor device in actual work is simulated, the bearable circulation times of the power semiconductor device are detected, and the problem that a traditional testing device for the power semiconductor device only has a single heating or cooling function, and the testing efficiency is low is solved. And the test precision is poor.

The present application discloses a heat transfer composition, which includes HFC-32, HFC-125, HFC-134a, HFO-1234yf, HFC-152a; or includes HFC-32, HFC-125, HFC-134a, HFO-1234yf, CF3I, and has a GWP value of less than 1500. It can directly replace R-404A in a heat transfer system designed for R-404A without changing any components, and has excellent refrigeration effect in low-temperature freezing, fast cooling rate and low energy consumption.

This invention provides a microfluidic chip temperature control fixture and its usage method, including a fixture base for mounting the entire fixture; a clamping groove is formed in the middle of the fixture base, and a chip stage is supported inside the clamping groove; a heating film and a temperature sensor for precise temperature control of the microfluidic chip are disposed inside the chip stage; a fixture cover for mounting the microfluidic chip is hinged to one side of the fixture base via a connecting shaft, and the fixture cover can rotate around the connecting shaft and press against the chip stage; a pressure head for pressing and locking the fixture cover is hinged to the other side of the fixture base. This fixture facilitates the installation and removal of microfluidic chips, and allows for easy adjustment of their installation position. The overall structure is simple and easy to operate; it also enhances the sealing performance of the circulating fluid path and achieves temperature control of the microfluidic chip, facilitating rapid cooling and improving work efficiency.

The application discloses a semi-axle automatic tempering production line temperature zone conversion mechanism, which comprises a heating box and a cooling pool arranged at the outlet end of the heating box, a heating pipe and a cooling pipe are arranged in the wall of the heating box, the cooling pool comprises a first cooling pool, a second cooling pool and a third cooling pool, the heating box comprises a first heating box, a second heating box and a third heating box, and a first air inlet pipe, a second air inlet pipe and a third air inlet pipe are arranged on the lower side of the first heating box, the second heating box and the third heating box respectively. The semi-axle automatic tempering production line temperature zone conversion mechanism with the above structure can not only reduce the heating time in the low-temperature zone, but also effectively utilize energy, and the operation of the mechanism is automatically controlled, and the working efficiency is improved.