32 results about "Force convection" patented technology

This utility model relates to the field of heat dissipation in power electronic equipment, and more particularly to a medium-frequency reactor with heat pipes connected to heat sinks and air cooling. It includes a medium-frequency reactor body, with a mounting base fastened to the top of the reactor body. Auxiliary heat dissipation components are provided on the mounting base corresponding to the winding positions of the reactor body. Each auxiliary heat dissipation component includes two heat pipes, with multiple heat sinks fixedly mounted at equal intervals around the two heat pipes. In this utility model, the concentrated heat from the windings is transferred to the externally distributed heat sinks through the evaporation and condensation phase change cycle of the working fluid inside the heat pipes, and then rapidly dissipated through forced convection by a fan. Simultaneously, a protective shell composed of an L-shaped column and a detachable dustproof top and side plates effectively prevents dust and debris from entering the reactor body and heat sink area.

A kind of partition heating semiconductor smelting crystal pulling device, it is related to semiconductor processing manufacturing technical field, including furnace body, multiple temperature-controlled heating zones are provided in furnace body inner cavity, and the heating zone includes growth temperature zone;Interface temperature monitoring mechanism is further arranged in the inner cavity of furnace body to monitor the solid-liquid interface temperature at the crucible;Rotary lifting mechanism is arranged at the top of furnace body;Rotary lifting mechanism rod passes through the upper end of furnace body and extends into the crystal pulling rod of growth temperature zone, and the rotary lifting mechanism drives the lifting and rotation of crystal pulling rod;Rotary lifting mechanism further includes rotating base, which drives rotary lifting mechanism to rotate when crystal pulling rod reaches the set height, through the precise temperature field of integrated multi-temperature zone, forced convection of rotary stirring, process flexibility of vertical pulling, and realize multi-system linkage control based on interface real temperature, meet the growth demand of high-precision materials such as multi-component compound semiconductor.

The utility model discloses an emulsion stirring device which comprises an outer tank body, an inner tank body and a tank cover, the inner tank body is arranged in the outer tank body, the top of the outer tank body is connected with the tank cover through a flange bolt, the bottom of the tank cover is rotatably connected with a stirring mechanism, the bottom of the tank cover is fixedly connected with a flow dividing chamber, and the flow dividing chamber is fixedly connected with a stirring mechanism. A three-layer stirring system of wall scraping of the linear stirring piece, circulation of the helical ribbon type stirring piece and shearing of the dispersing disc is adopted, the upper area, the middle area and the lower area of the tank body are covered, the stirring effect is good, and the stirring effect is good. A forced convection path of ascending in the cylinder and descending in an annular space is formed in cooperation with a fixed flow guide cylinder, the design that a flow dividing chamber is combined with an annular flow dividing opening is adopted, flowing of a high-viscosity auxiliary agent is accelerated through gravity, circumferential uniform adding is achieved in cooperation with a pneumatic diaphragm pump, and the outer tank body and the inner tank body are detachably designed, so that the time for maintaining the heating bin and cleaning the inner tank body is shortened.

The invention discloses a superfluid helium low-temperature visualization device suitable for neutron fluorescence tracing and an experiment method, and a low-temperature heat insulation system module in the superfluid helium low-temperature visualization device comprises a cavity, a liquid nitrogen pool, a 77K cold screen, a superfluid helium pool and a 4K cold screen; the vacuum pumping and circulating reliquefaction module is used for recycling gasified helium; the temperature and liquid level monitoring control module is used for monitoring the temperature, the liquid level and the pressure in real time; the experimental observation and visualization module is used for neutron incidence, laser excitation and fluorescence signal observation path penetration, so as to realize visual observation of excimer fluorescence in the superfluid helium flow field; and the convection driving and mode switching module is used for realizing two experimental modes of mechanical driving forced convection and thermal driving internal convection. The device can stably obtain a superfluid helium environment below 2.17 K, and has the advantages of being excellent in heat insulation performance, high in liquid helium utilization rate, detachable and replaceable in structure, stable in operation, suitable for neutron fluorescence flow field observation and the like.

The application relates to a liquid rocket engine test heating device, in particular to a liquid rocket engine inner cavity induction heat accumulation type hot nitrogen gas supply device and method, and solves the technical problem that the existing low-temperature liquid rocket engine usually adopts an external hot air forced convection or electric heating wire heating nitrogen gas mode to heat the pipeline and the engine inner cavity nitrogen gas, and it is difficult to meet the low-temperature liquid rocket engine pipeline and engine inner cavity rapid temperature recovery requirement. The liquid rocket engine inner cavity induction heat accumulation type hot nitrogen gas supply device comprises a heating unit, a pressure monitoring unit, a temperature monitoring unit and a control unit; the heating unit comprises a buffer tank and a heating assembly arranged on the buffer tank; an air inlet of the buffer tank is used for being connected with an air source; the pressure monitoring unit and the temperature monitoring unit are arranged on the buffer tank and are connected with the control unit respectively; and the control unit is used for controlling the heating assembly to work according to the inner cavity nitrogen gas temperature and the outer wall temperature of the buffer tank.

This utility model belongs to the field of chemical reagent and auxiliary agent production technology, specifically a cooling tower for chemical reagent and auxiliary agent production. It includes a sliding frame with metal plates mounted on both ends of its bottom side. The metal plates are arranged in a ring shape inside a cooling chamber. Several through holes are equidistantly spaced inside the metal plates. A rotating shaft is mounted on the output end of a drive motor, and a cam is mounted on the outer side of the rotating shaft. A rotating shaft is movably mounted inside one end of the cam, and a connecting rod is rotatably mounted on the other end of the rotating shaft. When the drive motor starts, its output end drives the rotating shaft and the outer cam to rotate. The cam drives the connecting rod to move, causing the sliding frame to reciprocate up and down inside the outer cylinder. The ring-shaped metal plates move synchronously. The movement of the metal plates breaks the static state of the cooling water in the cooling chamber, forming forced convection. Its corrosion-resistant metal material has excellent thermal conductivity, absorbing heat during movement. The internal through holes reduce resistance and promote water mixing, improving heat exchange efficiency.

Liquid drug formulations must be frozen as part of the lyophilization process to remove the solvent via sublimation. This freezing process is typically done through shelf-based cooling. The present disclosure provides, in various aspects, forced convection gas cooling chamber that can be used with a continuous lyophilizer to freeze product in vials or other containers without requiring solid contact between the vials or other containers and another surface. The gas temperature can also change rapidly, and the present disclosure relates in various aspects to the implementation of a thermal quench method for controlled nucleation.

The application relates to the technical field of medical instrument metal piece processing, and particularly discloses a cutting and welding device for medical instrument metal piece processing, which comprises a base, vertical plates are arranged on the top of the base, horizontal plates are fixedly connected to the top of the vertical plates, a cleaning mechanism is arranged below the horizontal plates, the cleaning mechanism is used for collecting the cutting generated chippings, cooling the cutting edge of the cutting knife, and cleaning the chippings attached to the surface of the cutting component. The cleaning mechanism is arranged, forced convection air cooling of the high-speed rotating cutting knife can be realized during the cutting operation, a large amount of heat generated due to friction can be removed in time, the temperature of the cutting knife blade part is effectively prevented from sharply rising, the gas is used as the cooling medium, the temperature sharply dropping problem caused by the traditional water-based or oil-based cooling liquid is avoided, and the risk that micro-cracks or macroscopic cracks are generated in the precision workpiece of the medical instrument due to thermal stress is eliminated.

The invention discloses a high-purity material purification system and process based on electromagnetic stirring driving, and belongs to the technical field of material purification. The system adopts a framework with synergistic effect of electromagnetic stirring and directional solidification, and comprises a furnace body adopting a water-cooled shell structure, an electromagnetic stirring device for generating a rotating magnetic field to drive forced convection of a melt, a directional solidification assembly with a closed-loop temperature gradient control function, and a vacuum refining assembly adopting a multi-stage series structure, and the control system is used for realizing coordinated control of each component. The purification process comprises the steps of raw material pretreatment, vacuum environment construction, melt heating and electromagnetic stirring, directional solidification purification, product taking out and the like. According to the invention, uniform dispersion of impurities is promoted through electromagnetic stirring, an impurity enrichment layer at the front edge of a solidification interface is destroyed, effective separation of the impurities is realized by utilizing a solute redistribution effect through directional solidification, gas phase pollution is eliminated through a vacuum environment, linkage adjustment of each process link is realized through a control system, and the production efficiency is improved. The product purity and the effective purification rate are obviously improved.

The application relates to the technical field of bionic robots and discloses a leg buffering structure of a bionic robot, which comprises a base, a large arm rotatably installed on the base, a small arm rotatably installed at the end of the large arm away from the base, and a buffering assembly arranged between the large arm and the small arm and used for buffering between the large arm and the small arm. The buffering assembly comprises a sealing cylinder, the two ends of the sealing cylinder are provided with through openings, the sealing cylinder is internally filled with oil, a sliding plug is slidably arranged in the sealing cylinder, the sliding plug is provided with a plurality of oil holes, and a movable rod is fixed to the side surface of the sliding plug. The large arm and the small arm are rotated when the robot walks, the sliding plug drives the sliding plate to periodically stretch and compress the annular capsule, the circulation of gas in the base is realized, heat is transmitted to the cooling plate body through forced convection and heat conduction and is radiated to realize natural heat dissipation and cooling, an additional power source is not needed, the structure of the robot is not increased, and the weight of the robot is not increased.

Satellite achieving forced convection of a refrigerant fluid with evaporation-condensation between several structural panels and dissipative equipment. Satellite comprising: - a plurality of structural panels including at least two radiator panels (56) having an external face (60) for radiating heat into space (62), and an internal face (64), the two radiator panels being adapted to conduct heat from the internal face to the external face, - dissipative equipment (30), - a circulation loop of a refrigerant fluid (34), comprising: - a pumping system to achieve forced convection of the fluid, - at least two evaporation-condensation heat exchangers (72) of the fluid, each of the exchangers extending against the internal face of one of the two radiator panels.Each of the two heat exchangers comprises: - a first part (82) in thermal contact with one of the dissipative devices to vaporize a fraction of the fluid, - a second part (84) in thermal contact with the inner face to condense a fraction of the fluid. Figure for the abbreviation: Figure 4.

The invention relates to the technical field of braised pork processing, and discloses steaming equipment for industrial processing of braised pork, which comprises a tank body, a tank cover and a metal tray, the metal tray is provided with a rotating shaft, the rotating shaft is provided with a plurality of fixed sleeves I, and the fixed sleeves I are internally provided with sliding rod frames I; according to the steaming equipment for the industrial processing of the braised pork with the vinasse, the fixed sleeve I, the sliding rod frame I and the arc-shaped flexible blades are arranged on the rotating shaft, the synergistic effect of a spring part I and a torsional spring is utilized, and the steaming effect of the braised pork with the vinasse is improved; the expansion angle of the arc-shaped flexible blade is adaptively adjusted along with the change of the rotating speed of the rotating shaft, the maximum expansion angle is kept at a low speed to realize mild stirring, and the smaller expansion angle is kept at a high speed to form forced convection, so that the dynamic regulation and control on the cooking liquor stirring intensity in the whole steaming process are realized; the rapid heat transfer in the shaping stage is ensured; and the flavor volatilization loss in the fragrance keeping stage is reduced.

The invention discloses a gel foam composite mattress and a preparation method thereof, and relates to the technical field of household articles. The mattress comprises an upper comfortable layer, a functional composite layer and a bottom supporting layer. The functional composite layer is composed of a sponge base body and a plurality of flexible long-strip-shaped bags embedded in the sponge base body, the bags are made of PEPA co-extrusion films and filled with mixed filler of macromolecular water-absorbent resin gel particles and surface modified high-elasticity foam particles, and a three-dimensional microcirculation ventilation network communicated through channels among the bags and miniature ventilation ducts is arranged in the sponge base body. Through heat absorption and heat conduction of the gel particles and forced convection of the three-dimensional ventilation network, the problem of deep heat and moisture accumulation of the mattress is solved synergistically; by combining particle collaborative support and bag partition design, dynamic fit and tough ergonomic support is provided while heat dissipation is guaranteed, the structure is stable, and the mattress is particularly suitable for improving sleep comfort and preventing bedsores.

The invention discloses an intelligent temperature control household mead brewing machine, and belongs to the technical field of mead brewing equipment. The fermentation tank is composed of an inner tank and an outer tank which are of a double-layer structure, the sealing cover is connected with the fermentation tank in a sealed mode and is integrated with a man-machine interaction panel, the stirring device is vertically installed in the center of the sealing cover and extends into the tank, the electromagnetic induction coil is wound around the outer side of the inner tank, and the liquid cooling circulation system is composed of a refrigeration part and a refrigeration module. A temperature sensor group is arranged on the stirring device and is used for monitoring the temperature of the fermentation liquor in a multi-point coordinated manner. Through the synergistic effect of rapid heating of the electromagnetic induction coil, efficient cooling of liquid cooling circulation and forced convection of the stirring device and in combination with a pre-judgment adjustment algorithm of the central processing unit, intelligent and accurate regulation and control of the mead fermentation environment are achieved, and the problems that in the prior art, temperature control is not accurate, and the fermentation environment is not uniform are solved.

The invention discloses a forced convection single-tank fused salt-solid energy storage device which comprises a heat storage tank body, and the interior of the heat storage tank body is divided into a central fused salt filling area and a peripheral mixed filling area through an annular partition plate; the mixed filling area is filled with a mixture of solid particles and fused salt, the fused salt filling area is filled with pure fused salt, and through holes used for blocking the solid particles and allowing the fused salt to pass through are formed in the partition plate; the device is further provided with a forced convection disturbance device, the forced convection disturbance device comprises a liquid collecting barrel vertically arranged in the center of the fused salt filling area, a piston and a driving piece, through holes are formed in the barrel wall of the liquid collecting barrel, the driving piece drives the piston to move in the liquid collecting barrel in a reciprocating mode, and forced circulation convection is formed in the heat storage tank body by sucking and discharging fused salt. Temperature stratification in the tank is broken through forced convection, the temperature uniformity and the heat exchange efficiency in the heat charging and discharging process are improved, local overtemperature or solidification is effectively avoided, and the overall operation safety and economical efficiency of the energy storage system are improved.

The invention discloses a palladium-based composite electro-catalysis membrane for removing halogen-containing pollutants in water and a preparation method and application of an assembly of the palladium-based composite electro-catalysis membrane, and belongs to the technical field of water treatment. The method comprises the following steps: 1, preparing a titanium nitride hollow fiber membrane; 2, loading the titanium nitride hollow fiber membrane into a membrane module; and thirdly, palladium nanoparticles are loaded through a circulation type electro-deposition method. The palladium-based composite electro-catalysis membrane assembly for removing the halogen-containing pollutants in the water is used for removing trace halogen-containing pollutants in the water; according to the palladium-based composite electro-catalytic membrane provided by the invention, the mass transfer and reaction efficiency is remarkably enhanced through forced convection and pore channel confinement effects introduced in the membrane filtration process, so that the treatment efficiency is greatly improved while the energy consumption is reduced; the removal rate of the membrane on trace halogen-containing pollutants under a complex water quality condition can exceed 99.9%, the reaction rate constant of the membrane is improved by 2-4 orders of magnitude compared with that of a traditional technology, the energy consumption of water treatment per ton can be reduced to 0.1 kWh or below, and the membrane shows a remarkable energy efficiency advantage.

The invention discloses a zinc supplementing device for a zinc pot, and relates to the field of zinc plating processes, the zinc supplementing device comprises a zinc supplementing hanging frame, a supporting movable mechanism is arranged in the zinc supplementing hanging frame, the supporting movable mechanism comprises a plurality of movable rods arranged in the zinc supplementing hanging frame, the movable rods are alternately distributed up and down, and connecting rods are fixed to the two ends of each movable rod; floating assemblies are arranged between the multiple movable rods and the zinc supplementing hanging frame, a movable assembly is arranged between the two supporting beams, and turbulent flow mechanisms are arranged between the adjacent connecting rods. The movable assembly is used for driving the floating assembly, the floating assembly drives the multiple connecting rods to move, the multiple movable rods move in a staggered mode when supporting a zinc block, meanwhile, the turbulent flow mechanism generates forced convection in zinc liquid, and therefore the heat transfer process is remarkably accelerated, the time needed for zinc supplementing is shortened, and the production efficiency is improved; meanwhile, a low-temperature zinc liquid boundary layer on the surface of the zinc block can be taken away through fluid disturbance, and high-temperature zinc liquid is introduced.

The utility model relates to a dish-washing machine technical field, especially a dish-washing machine with limiting component, including cabinet main part and dish-washing machine main body, the inner wall of cabinet main part is fixedly installed with limiting frame through self -tapping screw, dish-washing machine main body is located in the inside of limiting frame, the inner wall of limiting frame is fixedly connected with two symmetrical support plate of setting, the utility model has the advantages that: the position of the ventilation groove of the front of the frame and the dust screen corresponding fan mounting plate forms the circulation path of " air intake - heat dissipation - exhaust air ": the outside air is filtered after passing dust screen and enters the ventilation groove, and under the drive of fan, passes through the inside of limiting frame, and after the heat is carried, is discharged from the gap of cabinet main body and dish-washing machine main body, avoids the heat to accumulate in the narrow space. This design breaks the heat dissipation barrier caused by the close adhesion of traditional embedded dish-washing machine and cabinet, improves the heat dissipation efficiency through forced convection, and guarantees that the operating temperature of water pump, motor and other electrical components is in a reasonable range.

The utility model relates to the technical field of notebook computer supporting seats, and discloses a notebook computer supporting seat with a good heat dissipation effect, which comprises a bottom plate, the front end of the bottom plate is fixedly connected with a supporting plate, the inner wall of the bottom plate is fixedly connected with a fixed column I, and the surface of the fixed column I is rotatably connected with a movable sleeve. A supporting plate is fixedly connected to the surface of the movable sleeve, a mounting table is fixedly connected to the bottom of the supporting plate, a second fixing column is fixedly connected to the inner wall of the mounting table, a connecting rod is fixedly connected to the surface of the second fixing column, and a clamping groove is formed in the top of the bottom plate. The copper plate and the densely arranged radiating fins are integrated on the inner side of the supporting plate, the output end of the radiating fan directly faces the surfaces of the fins in parallel, a low-wind-resistance and high-efficiency forced convection radiating channel is formed, meanwhile, the connecting rod can be clamped into the clamping grooves in different positions on the bottom plate after rotating around the second fixing column, and therefore the radiating effect is improved. And multi-gear stepless adjustment of the included angle between the supporting plate and the bottom plate is realized.

The utility model discloses a smoking chamber structure for meat product processing, which comprises a box body, a smoking part and a convection part, the smoking part is arranged in the box body, the smoking part is provided with a power shaft which is transversely and rotatably arranged in the box body, a motor is arranged on the side surface of the box body, the output end of the motor is connected with the power shaft, and the convection part is arranged in the box body. The convection part is arranged in the box body, the convection part is provided with a transmission box a arranged in the box body, a transmission shaft a is vertically and rotatably arranged in the transmission box a, the transmission shaft a is in meshed connection with a power shaft, the power shaft rotates to drive the transmission shaft a to rotate, and blades a are arranged at the bottom of the transmission box a. By arranging the smoking part and the convection part, the power shaft can be driven by the motor to rotate, so that the transmission shaft a and the blade a are driven to rotate, a forced convection circulation system is formed, smoke is uniformly distributed in the box body, the uniformity and the efficiency of smoking meat products are improved, and non-uniform distribution of the smoke is avoided.

The utility model provides a recovery treatment device for amine-containing wastewater, which belongs to the technical field of amine-containing wastewater recovery treatment and comprises a treatment tank and a recovery treatment mechanism arranged in the treatment tank, the recovery treatment mechanism comprises a stirring frame rotationally connected in the treatment tank, and a plurality of liquid discharge pipes are arranged on the outer cambered surface of the stirring frame. Liquid outlet heads are arranged in a plurality of liquid outlets formed in the outer arc surface of each liquid discharge pipe, the annularly distributed liquid outlet heads form a group, the liquid outlet ends of the two groups of liquid outlet heads face opposite directions, a first one-way valve is arranged in each liquid outlet head, an air supply assembly is further arranged on the treatment tank, a liquid supply assembly is further arranged at one end of the treatment tank, a plurality of scraping plates are arranged at the edge of the stirring frame, and the scraping plates are arranged on the stirring frame. And the plurality of scrapers are in contact with the inner arc surface of the treatment tank. According to the amine-containing wastewater recycling device, efficient separation and resource recycling of amine-containing wastewater are realized through the forced convection effect, a precipitant and the amine-containing wastewater can be better mixed and react, and the recycling treatment efficiency of the amine-containing wastewater is improved.

This invention relates to the technical field of metal casting and discloses a rapid cooling alloy continuous casting equipment, including a support frame, a furnace body rotatably connected to the inner wall of the support frame, and a crystallizer disposed at the discharge port of the furnace body. A position adjustment mechanism is provided on one side of the furnace body to support the crystallizer. A cooling mechanism is provided on the crystallizer, which includes a box, a liquid inlet end, and a rotating head. The box is disposed on the outer wall of the crystallizer, with a front baffle fixed to one side wall and a rear baffle fixed to the other side wall. The liquid inlet end is fixed through and fixed to the top of the box. The rotating head is rotatably connected to the liquid outlet end of the liquid inlet end, and a nozzle is fixed to the liquid outlet end of the rotating head. By setting a cooling mechanism at the discharge end of the crystallizer, the cooling mechanism sprays coolant onto the billet. Utilizing the temperature difference between the billet and the coolant, the heat of the billet is rapidly transferred and carried away by forced convection. The vaporization and heat absorption of the coolant at high temperatures further enhance the heat exchange effect.

The application provides a cooling system of a charging system and a control method thereof. The cooling system comprises a vapor compression cooling unit, a forced convection cooling unit, and a fan. The vapor compression cooling unit comprises a compressor, a condenser, a throttling element and an evaporator connected in sequence through a vapor compression pipeline. The forced convection cooling unit comprises a liquid cooling plate, a heat exchanger, the evaporator and a water pump connected through a cooling pipeline. The liquid cooling plate is in close contact with a power module of the charging system. The evaporator comprises a first flow channel and a second flow channel. The evaporator is used for evaporating the refrigerant flowing out of the condenser and performing convection heat exchange between the cooling liquid in the second flow channel and the refrigerant in the first flow channel. The application realizes the cooling of the charging system in the form of the combination of forced convection and vapor compression. The cooling liquid is cooled by the forced convection cooling unit and the vapor compression cooling unit through the convection heat exchange in the evaporator. The energy cascade principle is maximally utilized, and the application has low cost, is environmentally friendly and has high efficiency.

This utility model discloses a low-pressure rotor blade, including a support base and a blade body. A recessed groove is annularly arranged at the edge of the support base, and wedge-shaped grooves are evenly arranged inside the recessed groove. A blade body is arranged on one side of each wedge-shaped groove. Gradient reinforcing ribs are arranged side-by-side on the inner wall of the blade body, and a gradient flow divider is arranged between adjacent gradient reinforcing ribs. Air holes are evenly arranged at the end of each gradient flow divider near the root of the blade body. The blade body of this utility model has gradient flow dividers, with the width gradually increasing from the root to the tip. Air holes are evenly arranged at the end of each gradient flow divider near the root of the blade body. A through-hole copper hollow tube is arranged inside the air holes. When the blade body rotates, the gradient flow dividers can effectively capture airflow and guide the airflow from the wider end to the narrower end, achieving forced convection of cooling air, effectively removing heat and preventing the blade from overheating.

The present invention discloses a coke oven waste gas desulfurization treatment apparatus, and relates to the technical field of waste gas treatment, the coke oven waste gas desulfurization treatment apparatus comprises a support, the support is internally provided with a two-stage purification reaction unit capable of carrying out liquid phase absorption and gas-liquid countercurrent spray desulfurization on coke oven waste gas, the bottom surface of the reaction unit is provided with a pollution discharge unit capable of quickly removing impurities from waste liquid generated in the operation process, and the reaction unit comprises a reaction tower fixedly mounted in the bracket and an annular gas inlet pipe fixedly connected to the bottom of the reaction tower to realize multi-position gas inlet; flue gas is guided through the annular gas inlet pipe, gas distribution in the space in the reaction tower is achieved at the bottom of the reaction tower, a circulating medium is injected into the cooling box through the water inlet pipe, a forced convective circulation heat exchange system is formed, cooling operation of the flue gas in the annular gas inlet pipe is achieved, and the influence of the flue gas temperature on follow-up desulfurization operation is reduced; and the water outlet pipe synchronously discharges the heat exchange medium to keep the temperature gradient of the cooling working medium stable, so that the device can continuously work.

The utility model relates to the field of concave-convex stick powder preparation drying technology discloses a powder drying device for concave-convex stick powder preparation, including control box, the front of control box is fixedly connected with control panel, the front of control box is fixedly connected with control button, the top of control box is fixedly connected with support bottom ring, the inside fixed connection of support bottom ring has heating round plate, the top of support bottom ring is inserted with the installation of support ring. The utility model discloses a sealing top cap top clamping small motor drive transmission shaft drives the continuous rotation of the material turning plate, and its bottom and the direct contact design of product drying disc top surface make material be constantly turned and thrown in the drying process, and this kind of forced convection mechanism breaks the limitation of traditional static drying, avoids the caking phenomenon of material because of electrostatic adsorption or humidity gradient, ensures that every powder can be fully exposed to hot air, and greatly improves drying uniformity and finished product yield.

The invention relates to the technical field of medical treatment, and provides organ low-temperature mechanical perfusion and a temperature control method thereof. The temperature control method for organ low-temperature mechanical perfusion comprises the following steps: immersing an organ in flowing organ perfusion liquid with controllable temperature, and cooling or heating the surface of the organ by using forced convection heat exchange; and injecting the temperature-controllable organ perfusate into the organ, so that the organ perfusate circularly flows in the organ, and cooling or heating in the organ is realized. According to the temperature control method for organ low-temperature mechanical perfusion, the defect that in the prior art, in the organ low-temperature mechanical perfusion heating and cooling process, temperature distribution in an organ is not uniform, thermal stress damage and biological damage are caused, and finally organ activity is reduced is overcome, and the novel temperature control method for organ low-temperature mechanical perfusion is achieved. The temperature inside and outside the organ is always uniform, thermal stress damage and biological damage are reduced, good activity of the organ is ensured, and a guarantee is provided for subsequent transplantation.

This invention discloses a cooling system and method for a ship's urea tank, comprising a refrigeration circulation unit, a urea tank, and a urea circulation pipeline. The refrigeration circulation unit includes a compressor, a condenser, an expansion valve, and an evaporator connected in sequence. The evaporator includes a shell and evaporation pipes disposed within the shell. The evaporation pipes are connected to the expansion valve and the compressor. The shell has a urea solution inlet and a urea solution outlet. The urea circulation pipeline connects the urea tank and the evaporator shell, and is used to directly transport the urea solution in the urea tank to the evaporator shell, where it exchanges heat with the refrigerant flowing through the evaporation pipes before being returned to the urea tank. This invention improves heat exchange efficiency by directly introducing the urea solution into the evaporator shell for cooling, eliminating the need for intermediate heat exchange media or independent coil structures. The forced convection within the urea tank is enhanced through the nozzles or diagonal arrangement of the return pipeline, solving the problem of temperature stratification in the urea tank. This invention has the advantages of compact structure, high cooling efficiency, and low cost.

The utility model relates to a PH value adjusting device which comprises a tank body and a tank cover, and a lifting mechanism, a stirring mechanism and a water pump are arranged in the tank cover. The fixed end of the lifting mechanism is fixedly arranged in the tank cover, the stirring mechanism is connected to the movable end of the lifting mechanism, a stirring rod of the stirring mechanism penetrates through the tank cover and extends into the tank body, a pipeline joint is arranged on the peripheral wall of the tank cover, the liquid inlet end of the water pump is connected with the inner end of the pipeline joint, and the liquid outlet end of the water pump extends into the tank body through a pipeline; a PH value detector extending into the tank body is arranged at the bottom of the tank cover, and the pipeline joint is externally connected with a regulating liquid container. A lifting type stirring rod structure is introduced, axial movement is synchronously achieved in the rotating process, the liquid layering phenomenon is broken, solutions in different liquid layers generate forced convection, adjusting liquid is rapidly diffused to all depth areas of a container after being injected, the time needed for PH value balancing is greatly shortened, and the problem of misjudgment caused by the fact that the local PH value of a traditional device reaches the standard is effectively solved.

The utility model provides a self-cooling melting cup, which belongs to the technical field of casting equipment and comprises a melting cup base body, a cooling water jacket, a sleeve, radiating fins and a sealing cover, a feed port is arranged on the surface of one side of the melting cup base body, the cooling water jacket is mounted at the outer end of the melting cup base body, the sleeve is mounted at the outer end of the cooling water jacket, a water inlet is arranged at one end of the sleeve, and a water outlet is arranged at the other end of the sleeve. According to the utility model, the sealing cover is nested at the port on one side of the cooling water jacket and the sleeve, and the port on one side far away from the water inlet can be blocked through the sealing cover, so that the cooling water is prevented from directly flowing out, the cooling water absorbing heat is jetted outwards from the water outlet hole of the sealing cover, and the jet heat dissipation is realized in a forced convection manner; heat can be rapidly transferred into air, so that the efficient heat dissipation effect is achieved, cooling water is not completely taken away when the injection rod retreats, a layer of water film is formed on the inner wall of the cooling water jacket, and it is avoided that the cooling water jacket is in contact with cooling water with the large temperature difference in the subsequent heat absorption process, and consequently the cooling water jacket cracks.