53results about How to "Little change in temperature difference" patented technology

The invention belongs to the technical field of chemical cleaning of metal surfaces, and particularly relates to a metal surface cleaning anti-scaling agent containing compound acid. The agent comprises two or more components in parts by weight as follows: 70-98 parts of sulfamic acid, 0.05-20 parts of glycolic acid, 0.05-20 parts of tartaric acid, 0.05-20 parts of lactic acid, 0.05-20 parts of gluconic acid, 0.05-20 parts of salicylic acid, 1.5-1.8 parts of a sulfamic acid corrosion inhibitor and 0.2-0.45 part of a surfactant. The agent utilizes sulfamic acid as the main pickling potion, the material status is solid, therefore the transportation is convenient, the cost is low, the pickling temperature is low, the implementation is facilitated, and time, labor and energy are saved. During water washing after pickling, the temperature difference born by a water wall can be reduced greatly under the condition of insufficient heat source capacity, and the protection of the water wall is facilitated. The agent is further provided with characteristics of simple postprocessing, low cleaning cost, and the like, can be applied to chemical surface cleaning of various metal materials such as carbon steel, stainless steel, alloy steel and the like, and can be widely applied to chemical cleaning of various large-capacity boilers and heat exchangers.

The invention discloses an air conditioner defrosting method and an air conditioner, and relates to the field of air conditioners. The air conditioner defrosting method is used for optimizing the defrosting effect of the existing air conditioner. The air conditioner defrosting method includes the following steps that the ratio X of the rated capacity sum of indoor units in manned rooms to the rated total capacity sum of all working indoor units is monitored; and if X is smaller than or equal to N, at least one of all the indoor units in the manned rooms does not participate in defrosting, wherein N is a set value. According to the air conditioner defrosting method in the technical scheme, before defrosting, the indoor units are distinguished into the indoor units in the manned rooms and the indoor units in the unmanned rooms. During defrosting, all or part of indoor units in heating modes in the manned rooms do not participate in defrosting, in other words, at least one of the indoor units in the manned rooms does not participate in defrosting circulation, by means of the arrangement, the situation that the temperatures of the indoor units are affected due to defrosting is avoided,the temperature difference change caused by defrosting is effectively reduced, the comfort of users is improved, and the experience of the indoor users corresponding to the indoor units is better.

The invention relates to a double-P type radiant tube. The double-P type radiant tube is arranged in a heat treatment furnace and comprises three parallel arrayed straight tubes, and both ends of each straight tube are symmetrically welded with two bent tubes, wherein the middle of one bent tube is provided with an air inlet tube coaxially arranged with the middle straight tube, while the other bent tube is welded with one end of a supporting tube coaxial to the middle straight tube. The manufacture method of the double-P type radiant tube comprises the following steps of: (1) calculating the manufacture size of the double-P type radiant tube; (2) cutting a plate, rolling the plate and welding the plate into the straight tubes; (3) punching and forming a plate into half bent tubes and welding the half bent tubes into the bent tubes; and (4) argon arc welding the manufactured straight tubes and the bent tubes and welding the supporting tube.

The invention discloses a full-automatic nut forging machine which comprises a forging bed, wherein a cabinet of the forging bed is provided with an upsetting station, a molding station, a punching station and a material receiving station; the forging bed is also provided with an upsetting mold, a shaping mold and a punching mold; the side edge of the cabinet is provided with a material receivingmachine and a heating furnace, a discharge pipe of the heating furnace is connected with a material receiving nozzle of the material receiving machine, the material receiving machine is also in movable butt joint with a material moving mechanism at the front end of the cabinet; the heating furnace is used for heating a nut blank; the discharge pipe is used for overturning the nut blank by 90 degrees; the material receiving machine is used for horizontally pushing the overturned nut blank to the butt joint position with the material moving mechanism; the material moving mechanism is provided with four material clamping components, drives the material clamping components to synchronously move, horizontally transfers the nut blanks/nuts on the butt joint position of the material receiving machine, upsetting station, molding station and punching station to the upsetting station, the molding station, the punching station and the material receiving station, and is matched with the forging bed to complete upsetting, molding, punching and material receiving.

The invention discloses a manufacturing technology of a hollowed-out peach wood screen. The technology is characterized by comprising the steps as follows: (1) material selection is performed as follows: a peach tree with the tree age being 20 years or above is selected as a machining material; (2) board sawing is performed as follows: a peach wood board is 1.8-2 cm thick; (3) heating and boiling in saline water are performed as follows: the board is immersed in water with the sodium chloride concentration ranging from 0.7% to 1% for heating and boiling; (4) high-pressure fumigation is performed as follows: the board is vertically placed on a distillation layer of a pressure cooker, a preservative is added, and high-temperature fumigation is performed; (5) softening in an acid and a base is performed as follows: the board is immersed in a sodium hydroxide solution and a hydrochloric acid solution respectively for soaking treatment; (6) drying is performed as follows: the board is vertically placed in a drying box, and a drying technology is performed; (7) hollowing-out engraving is performed as follows: the hollowed-out screen is engraved; (8) waxing is performed as follows: the screen is coated with wood wax by the aid of a soft brush and is coated repeatedly for 3-4 times. With the technology, the content of moisture in the peach wood board can be reduced, the anti-corrosion and moisture-proof performance can be improved, and the engraving performance and the smoothness of the peach wood board can be improved.

The invention discloses a heat exchange system for a multi-refrigerating circuit refrigerator and a refrigerator-disinfection cabinet all-in-one machine. The heat exchange system has the main characteristics that: an outlet end of a freezing chamber evaporator is connected with an inlet end of a refrigerating chamber evaporator through a freezing-refrigerating connection tube; the refrigerating chamber evaporator is placed in a anti-freezing fluid box; the outlet end of the freezing chamber evaporator is connected with a muffler through a freezing-return-air connection tube; a normally closed two-way valve is arranged on the freezing-return-air connection tube; the refrigerating chamber evaporator and the freezing chamber evaporator can be connected in parallel with two capillary tubes respectively; and a condenser is arranged at a position close to an inner liner of a disinfection cabinet. The heat exchange system can greatly reduce temperature difference change of a rear wall of an inner liner of a refrigerating chamber, can avoid frost formation in the refrigerating chamber evaporator, and can make the temperature in the refrigerating chamber more uniform, which are beneficial for keeping fruits and vegetables fresh; and the system can realize separate refrigeration of the refrigerating chamber, and can select the capillary tubes with greater flow to improve the energy efficiency ratio of a compressor.

The invention discloses a full-automatic bearing ring forging machining production line. The full-automatic bearing ring forging machining production line comprises a heating furnace, a material pushing machine, a first forging machine, a material moving mechanism, a swirl pendulum material moving mechanism, a second forging machine and a discharging mechanism. The heating furnace is used for heating bearing rings to be forged. The material pushing machine is used for feeding the bearing rings which are blanked to a material receiving nozzle to a position connected with the material moving mechanism in a butting mode. The first forging machine is provided with a forging roughing station, a forming station, a punching station, a forging roughing mold, a forming mold and a punching mold. Thematerial moving mechanism includes four material-taking clamp assemblies, and the material moving mechanism can drive the four material-taking clamp assemblies to move synchronously and can transversely transfer the bearing rings located at the butting position of the material pushing machine and the material moving mechanism, the forging roughing station, the forming station and the punching station to the forging roughing station, the forming station, the punching station, and the butting position of the material moving mechanism and the swirl pendulum material moving mechanism. The swirl pendulum material moving mechanism is used for clamping and transferring the bearing rings which are punched to the second forging machine. The second forging machine is used for machining the bearingrings for secondary forming. The discharging mechanism is used for clamping and discharging the bearing rings which complete the secondary forming to a material receiving box or a next station.

The invention discloses a still kettle quick accumulated residual steam accumulated energy circulating device and a still kettle quick accumulated residual steam accumulated energy circulating method. The device comprises an energy accumulating device communicated with a still kettle, wherein the energy accumulating device at least comprises a first energy accumulating container and a second energy accumulating container; steam inlet ends of the first energy accumulating container and the second energy accumulating container are communicated with a steam discharging end of the still kettle through a steam discharging pipeline; steam discharging ends of the first energy accumulating container and the second energy accumulating container are communicated with a steam inlet end of the still kettle through a steam returning pipeline; a steam discharging control valve used for controlling medium flow in the steam discharging pipeline is arranged on the steam discharging pipeline; a steam returning valve used for controlling medium flow in the steam returning pipeline is arranged on the steam returning pipeline. The still kettle quick accumulated residual steam accumulated energy circulating device is an energy accumulating device which takes water (or soft water) as a medium. The principle is that residual steam in a steam discharging still kettle is stored by adopting a high pressure-dividing way to a low pressure-dividing way, and in a boosting process of a steam inlet still kettle, the stored steam is released from the low pressure-dividing way to the high pressure-dividing way to be supplied.

The invention relates to the technical field of medical articles and discloses an anti-bedsore cushion. The anti-bedsore cushion comprises an air cushion bed, wherein the air cushion bed comprises a first air bag, second air bags are fixedly connected to the right side surface of the first air bag, guardrail air pipes are fixedly connected to the tops and the bottoms of the first air bag and the second air bags respectively, and laser boring air holes are formed in opposite surfaces of the two guardrail air pipes and the front sides of the second air bags; the insides of the second air bags are communicated with the guardrail air pipes, and a middle channel pipe is fixedly connected to the top of the left side surface of the one guardrail air pipe. According to the anti-bedsore cushion, airflow ventilates the back of a patient through the middle channel pipe and the laser boring air holes by means of a centrifugal fan, so that skin of the patient is kept dry, a cold-end radiator and ahot-end radiator heat or cool delivered airflow, the environment for recuperation of the patient is regulated, temperature difference change of the environment for recuperation is reduced, and the anti-bedsore effect is achieved.

The invention discloses a full-automatic ball cage forging production line which comprises a heating furnace, an overturning mechanism, a rotary material moving mechanism and a material moving mechanism, wherein a heating furnace is used for heating a ball cage blank to be molded; the overturning mechanism is used for transferring the ball cage blank to the butt joint position of the overturning mechanism and the rotary material moving mechanism, and overturning the ball cage blank; the rotary material moving mechanism is used for clamping the ball cage blank and transferring the ball cage blank to an upsetting mold of a first punch press and/or clamping the ball cage blank subjected to upsetting on the upsetting mold of the first punch press and transferring the ball cage blank to a molding mold of the first punch press; the material moving mechanism comprises a first transplanting manipulator, a transplanting material conveying assembly and a second transplanting manipulator; the first transplanting manipulator is used for clamping and conveying the ball cage blank on the molding mold of the first punch press to the transplanting material conveying assembly; the transplanting material conveying assembly is used for conveying the ball cage blank subjected to primary molding to the second transplanting manipulator from the first transplanting manipulator; the second transplanting manipulator is used for clamping the ball cage blank subjected to primary molding conveyed by the transplanting material conveying assembly and conveying the ball cage blank to the molding mold ofa second punch press for secondary molding.

The invention discloses a temperature difference-controlling and condensation-proof inverter station box. The structure thereof comprises a box body, a box door, an installation room, a condensation-proof device and a venting port, wherein edges of both sides of the front and rear ends of the box body are hinged to the box door through hinges. The temperature difference-controlling and condensation-proof inverter station box provided by the invention inductively operate automatically by providing an automatic air supply mechanism and cooperating with the temperature sensor thereon, the cold air is heated by the air heating mechanism and then discharged from the air guiding mechanism into the box body to realize a small temperature difference between the inside and outside of the box, and the temperature inside the box is always maintained at a suitable temperature, thereby avoiding the condensation phenomenon and preventing accidents. In the function of a regenerative desiccant in thedrying box, the temperature difference-controlling and condensation-proof inverter station box provided by the invention realizes the function of drying the humidity in the air, and effectively reduces the humidity of the air inside the inverter station box to further prevent the condensation in the inverter station box, thereby greatly improving the safe operation level of the inverter station equipment and ensuring safe and reliable operation of the power grid.

The invention relates to the technical field of heat treatment of aluminum alloy extruded profiles, in particular to a heat treatment device for an ultra-long aluminum alloy extruded profile. The heattreatment device comprises a heat treatment device body, the heat treatment device body is composed of a heating furnace, a heat preservation box, a water cooling box and an ultra-long profile, the heating furnace, the heat preservation box and the water cooling box are linearly distributed from left to right, a heating host is arranged at the upper end of the inner cavity of the heating furnace.The heat treatment device has the beneficial effects that through matching of the heating furnace, the heat preservation box, an air cooing section and the water cooling box which are linearly distributed, thus the interrupted heat dissipation of the ultra-long profile is achieved, the temperature difference change of adjacent positions is greatly lowered, and the profile defects caused by temperature difference stress are reduced; and a first limiting block and a second limiting block which are symmetrically distributed front and back are arranged, thus the position of the profile is limited, a motor-driven rotating roller is utilized to drive the profile to rotate slowly, so that the profile is evenly heated and dissipated, and the quality of heat treatment is greatly improved.

The invention relates to the technical field of gas-liquid separation devices in chemical engineering equipment, specifically to a high-freezing-point medium gas-liquid separator with a labyrinth-typegas inlet pipe heat-preserving device. The high-freezing-point medium gas-liquid separator successively comprises an elliptical seal head, a cyclone drum body and a cyclone cone body from top to bottom, wherein the elliptical seal head, the cyclone drum body, the cyclone cone body, a liquid discharging pipe and an exhaust pipe located at the exterior of the elliptical seal head are respectively sleeved by a heat-preserving sleeve to form heat-preserving cavities; a connecting circular pipe is arranged between adjacent heat-preserving cavities; a tangential gas inlet pipeline is arranged at one side of the drum body of the cyclone drum body and comprises a gas inlet circular pipe, a cone pipe and a rectangular pipe; four side surfaces of the cone pipe are respectively provided with a conepipe heat-preserving chamber; and four side surfaces of the rectangular pipe are respectively provided with a rectangular pipe heat-preserving chamber. According to the invention, heat-conductive oilenters from the heat-conductive oil inlet of a gas inlet pipe, respectively passes through the heat-preserving chambers located on four side surfaces of the cone pipe, the circular pipe heat-preserving chamber and the heat-preserving chambers located on four side surfaces of the rectangular pipe, and finally flows out from the heat-conductive oil outlet of the gas inlet pipe.

The invention discloses a grain drying process and drying equipment. The process comprises the steps of carrying out primary filtration, fine filtration, grain dispersion, grain tempering, grain drying, grain circulation and grain storage; the drying equipment comprises a drying machine, wherein a supporting base is fixedly installed at the lower end of the drying machine; the drying machine is divided into a tempering homogenizing section, a drying section and a discharging section from top to bottom, and the tempering homogenizing section and the drying section are consistent in height; whengrains are dried, the processes of windless tempering treatment, hot air heating and final tempering discharging are adopted, so that the temperature difference change of the grains is small, and thequality and value of the grains are improved; the height ratio of the tempering homogenizing section to the drying section is set to be 1: 1, so that the overall height of the drying machine can be greatly reduced, and therefore the produced finished product is reduced, and on the premise of ensuring the drying speed, the drying quality is improved.

The invention discloses a coating roller of a roller coater. The coating roller comprises a roller body, wherein the roller body comprises a roller shell and a roller core; the roller shell sleeves the roller core; a central channel is formed in the center of the roller core in a penetration manner; a multi-helix thread is arranged on the outer surface of the roller core; the outer surface of the roller core is matched with the inner surface of the roller shell to form a multi-helical channel; a guide-in pipe and an output pipe are arranged at one end of the roller body and are concentric pipes; an input channel is arranged in the guide-in pipe; an output channel is formed between the guide-in pipe and the output pipe; the input channel is communicated with the central channel; the output channel is communicated with the multi-helical channel; a connection head is arranged at the other end of the roller body and is communicated with the central channel and the multi-helical channel. By virtue of heat conduction of the coating roller of the roller coater, the surface of the roller shell is heated at uniform temperature, the temperature difference change of all parts is small, the roller coating quality of the roller coater is greatly improved, a heating medium is clung to the surface of the roller shell for heat transfer, the heat conduction speed is high, the heat loss is low, and the cost is lowered.

The invention relates to a vehicle supercooling extension condenser. The vehicle supercooling extension condenser comprises a condenser body; and the condenser body comprises a condensation section, astored liquid drying tank and a supercooling section serially connected in sequence. The vehicle supercooling extension condenser further comprises a supercooling extension flow communicating with anoutlet of the supercooling section; and the supercooling extension flow is arranged on a windward surface of the condenser body. The vehicle supercooling extension condenser guarantees the heat exchange efficiency of the condenser under the condition of reducing the windward area of the supercooling section.

The invention relates to a stepping combustion furnace. The stepping combustion furnace comprises a furnace body, wherein a nozzle is formed in the top of a furnace chamber of the furnace body, a temperature sensing device is arranged on the inner wall of the furnace chamber of the furnace body, the flaming end of the nozzle extends into the nozzle, the upper end of the nozzle is respectively connected with a combustion-supporting air pipe and a gas pipe, high and low-flame combustion-supporting air pipes of which both ends communicate with each other are formed in the combustion-supporting air pipe, a high-flame analog quantity actuator and a high-flame air volume sampling head are arranged on the high-flame combustion-supporting air pipe, a low-flame analog quantity actuator and a small-flame air volume sampling head are arranged on the low-flame combustion-supporting air pipe, high and low-flame gas pipes of which both ends communicate with each other are formed on the gas pipe, a high-flame proportional valve and a high-flame electromagnetic valve are arranged on the high-flame gas pipe, a low-flame proportional valve and a low-flame electromagnetic valve are arranged on the low-flame gas pipe, the high-flame proportional valve and the low-flame proportional valve communicate with the high-flame air volume sampling head and the small-flame air volume sampling head respectively by virtue of high and low-flame sampling pipes, and the high and low-flame analog quantity actuators and the high and low-flame electromagnetic valves are respectively connected with the temperature sensing device. Black strips cannot be generated on a pipe body, so that the heating is uniform; the pipe body is prevented from being oxidized, so that the gas consumption is reduced.

The invention discloses an open type hot runner injection mold device. The open type hot runner injection mold device comprises a mold cavity, an injection nozzle, a hot runner plate, a supporting ring and a back plate which are installed from bottom to top in sequence; the hot runner plate and the injection nozzle are internally provided with a hot runner, and the hot runner sequentially penetrates through the hot runner plate and the injection nozzle to communicate with the interior of the mold cavity; the outer side of the injection nozzle is provided with a heating plate and a heat insulation gasket, and the heating plate and the heat insulation gasket are connected to the outer wall of the injection nozzle in a sleeving mode; the mold cavity is separated from the heating plate throughthe heat insulation gasket; the outer side of the supporting ring is sleeved with a spring gasket; and one end of the spring gasket is connected with the supporting ring, and the other end of the spring gasket is connected with the back plate. According to the open type hot runner injection mold device, the hot runner plate and the heating plate are both provided with heating pipes, thus, the temperature of the hot runner is controlled more precisely, the temperature difference change of plastic is small, meanwhile, the hole diameter of the injection nozzle is increased, the length is decreased, the viscosity of the plastic is improved, and the problem that a bottle blank becomes white and is subjected to wire drawing is effectively solved.