225results about How to "Improve cooling speed" patented technology

The invention discloses a subnanometer enhanced and toughened transparent master batch and a preparation method thereof. The subnanometer enhanced and toughened transparent master batch comprises the following components in percentage by weight: 70-85 percent of subnanometer powder, 1-5 percent of dispersing agent, 0.3-1 percent of lubricating agent, 1-3 percent of coupling agent, 0.3-0.5 percent of thermal stabilizing agent, 0.1-0.5 percent of antioxidant and 10-25 percent of carrier resin. The preparation method comprises the following steps of: putting the subnanometer powder into a high speed mixer, selecting a high gear for stirring and heating, adding the coupling agent and treating for three minutes, then adding other raw materials, discharging and cooling after the raw materials are evenly stirred and mixed by the high speed mixer, then crushing, and extruding and pelleting through an extruding and pelleting device. The invention solves the problem that the mechanical performance of a plastic film is reduced after the common master batch is used in the prior art, in particular the problem that the light transmittance and the transparency are reduced; the mechanical performance of a film product is improved at the same time of reducing the cost; meanwhile, the invention achieves the purposes of enhancing and toughening and can be used in the fields of foods and medicines.

A heat exchanger for cooling a liquid comprising a cavity (2) containing a refrigerating liquid capable of evaporation under the effect of a depression maintained by a pump. The cavity includes at least a first wall (21) in contact with the liquid to be cooled, the first wall (21) being substantially conical such that its cross-sectional surface tapers from the base towards the top, and at least a second wall (22) forming the base of the conical shape and incorporating communication (30) between the cavity (2) of the exchanger and the pump.

The invention discloses an air conditioner and an air conditioner control method and device. The method comprises the following steps that the current outdoor temperature is detected and an outdoor temperature interval where the current outdoor temperature is located is judged; the current indoor temperature is detected and an indoor temperature interval where the current indoor temperature is located is judged; a current throttling mechanism valve opening degree value and a first current operation frequency value are obtained according to the temperature interval where the current indoor temperature is located and the temperature interval where the current outdoor temperature is located, and a second current operation frequency value is obtained according to the temperature difference between the current indoor temperature and a preset target temperature; and a throttling mechanism of the air conditioner is controlled to be started according to the current throttling mechanism valve opening degree value, and a compressor of the air conditioner is controlled to operate according to the maximum value of the first current operation frequency value and the second current operation frequency value. Therefore, a throttling device and the compressor both work in the optimal state according to the indoor and outdoor environment temperatures of the environment where the air conditioner is located, and accordingly the effect that the air conditioner conducts output with the maximum capacity all the time is substantially ensured under the condition that the indoor and outdoor environment temperatures change dynamically.

The invention relates to a conditioner and the application in sludge composting thereof, relating to a conditioner and the application thereof. The invention solves the problems that the existing conditioner is large in dosing quantity, easy to be decomposed, low in mass transfer efficiency, difficult to be recycled and easy to have anaerobic acidification. The conditioner is pumice with the grain diameter of 0.2 cm to 10 cm. The conditioner has the following applications: firstly, the conditioner is mixed with sludge so as to obtain a mixing material; secondly, the mixing material is put in a fermentation apparatus to carry out fermentation; thirdly, material is discharged after fermentation, then the conditioners is sieved out, namely, the application of the conditioner in sludge composting is finished. The dosing quantity of the conditioner is decreased by 30 percent, and the space structure thereof is stable, and the conditioner is not easy to be decomposed, high in mass transfer efficiency, able to be recycled and not easy to have anaerobic acidification.

The invention discloses a method and device for controlling a fan motor of a refrigerator and the refrigerator. The refrigerator comprises a compressor, a refrigerating chamber air door and a variable-temperature chamber air door. The method for controlling the fan motor of the refrigerator comprises the following steps that the environment temperature of the refrigerator and the current rotating speed of the compressor are obtained, the environment temperature state of the refrigerator is determined according to the environment temperature, the opening condition of the refrigerating chamber air door and the opening condition of the variable-temperature chamber air door are further obtained, and the voltage of the fan motor is determined according to the environment temperature state, the current rotating speed of the compressor, the opening condition of the refrigerating chamber air door and the opening condition of the variable-temperature chamber air door. According to the method for controlling the fan motor of the refrigerator, the voltage of the fan motor is determined according to the environment temperature state, the current rotating speed of the compressor, the opening condition of the refrigerating chamber air door and the opening condition of the variable-temperature chamber air door, then the rotating speed of the fan motor is determined, the cooling speed is improved, the starting time and the stopping time are optimized, the energy-saving effect is achieved, and user experience is greatly improved.

The invention provides a control method, a control system and a refrigerator. The control method is used for controlling the rotation speed of a draught fan of the refrigerator, and includes the steps that according to a received draught fan start request, whether current environment temperature is larger than or equal to a first preset temperature value is judged; a rotation speed threshold range of current compressor rotation speed of the refrigerator is determined according to a judgment result, and draught fan work voltage of the refrigerator is adjusted according to the rotation speed threshold range so as to determine the rotation speed of the draught fan. By means of the technical scheme, the rotation speed of the draught fan can be reasonably adjusted through cooperation of the environment temperature, the compressor rotation speed and refrigeration requirements of chambers in the refrigerator, so that start and stop time of a compressor is optimized and overall energy consumption of a refrigerator system is reduced while the cooling speed is guaranteed.

The invention discloses an MIG-TIG composite material adding device. The device comprises an MIG welding robot, a TIG welding robot, a workbench, a base plate water chilling device, a CCD camera, an infrared thermometer and a computer. The computer is connected with a TIG material adding robot, an MIG material adding robot, the CCD camera and the infrared thermometer, and controls the whole composite material adding device cooperatively. A base plate is placed in the water chilling device, the temperature of the base plate is controlled, and thermal deformation of the base plate is reduced. The device fully combines the advantages of two material adding devices, and material adding precision is also improved while the material adding efficiency is improved. Therefore, high efficiency and high precision electric arc additive manufacturing is achieved.

The invention discloses an air conditioner and a control method thereof. The air conditioner comprises a variable capacitance enthalpy increasing compressor device, an acquisition module, a temperature detector and a controller. The work modes of the variable capacitance enthalpy increasing compressor device include an ordinary compression mode, a single-cylinder enhanced vapor injection mode and a double-cylinder enhanced vapor injection mode. The acquisition module is used for acquiring the running mode of the air conditioner. The temperature detector is used for detecting the indoor environment temperature. The controller is connected with the variable capacitance enthalpy increasing compressor device, the acquisition module and the temperature detector. The controller controls the work modes of the variable capacitance enthalpy increasing compressor device according to the running mode of the air conditioner and the indoor environment temperature. According to the air conditioner in the embodiment, the refrigerating or heating speed can be increased, the refrigerating or heating effect can be improved, the running noise can be lowered, and meanwhile the energy efficiency ratio can be increased when the load is low.

The invention discloses a mixer shaft of a hard ice cream machine. The mixer shaft comprises a central rotating shaft (1), a rotator (3) and a mixing blade (2), wherein the rotator (3) is arranged on the central rotating shaft (1); the mixing blade (2) is arranged on the rotator (3); an outer edge of the mixing blade (2) is provided with doctor knives (7); and the doctor knives (7) are arranged at different heights of the mixing blade (2) and can slide along the mixing blade (2) in the radial direction of the mixer shaft. By adopting the mixer shaft of the hard ice cream machine, the doctor knives can be clung to the inner wall of a freezing cylinder of the hard ice cream machine under the action of centrifugal force during agitation to scrap the inner wall of the freezing cylinder more cleanly so as to increase the refrigeration speed and the refrigeration uniformity of the hard ice cream machine, and ensure that an ice cream cake body cannot have a deteriorated taste due to the interfusion of ice scraps.

The invention relates to a multi-chamber refrigeration control method. The method comprises the following steps that temperature differences of to-be-refrigerated chambers are obtained, wherein the temperature differences are differences between chamber temperature values of each to-be-refrigerated chamber and a corresponding first preset temperature value; and according to the order of the temperature differences of the to-be-refrigerated chambers, the to-be-refrigerated chambers are sequentially refrigerated. The temperature differences of the to-be-refrigerated chambers are obtained, that is the differences between the chamber temperature values of the to-be-refrigerated chambers and the first preset temperature value are obtained, the temperature difference values of the to-be-refrigerated chambers are ordered, the refrigeration order of the to-be-refrigerated chambers is obtained based on the sequence, and therefore refrigeration of the to-be-refrigerated chambers has a priority order, and the to-be-refrigerated chambers are refrigerated sequentially. In this way, the refrigeration requirements of each to-be-refrigerated chamber can be met, each to-be-refrigerated chamber is refrigerated independently in a targeted mode, the refrigeration speed is improved, overall refrigeration efficiency is effectively improved, and food fresh-keeping and storage are facilitated.

The invention belongs to the technical field of preparing a plastic product, and particularly relates to filling master batch capable of increasing strength and toughness of the plastic product and a preparation method of the filling master batch. The filling master batch is prepared by inorganic powder, a dispersing agent, a lubricating agent, a coupling agent, a heat stabilizer and carrier resin, and the inorganic powder is a mixture which is compounded by talcum powder and mica powder, of which the average grain diameters are 6-8 mum, in 1 : 1 mass ratio by passing through a 1800-2000 mesh screen. The filling master batch provided by the invention is mainly used for replacing part of synthetic resin in raw materials of an existing plastic product. Compared with the prior art, according to the filling master batch provided by the invention, the cost is low, and the production cost can be reduced to a large extent after part of the synthetic resin is replaced; and meanwhile, the filling master batch provided by the invention has the advantages of increasing the production efficiency, improving the product mechanical performance, increasing the heat-resisting temperature of the plastic product and the like, the plastic product, particularly a thin film product, which is prepared by adding the filling master batch is suitable for printing and is suitable for food and medical packaging industry.

The invention discloses a fan motor control method and a fan motor control device for a refrigerator and the refrigerator, wherein the refrigerator comprises a compressor, an air door of a refrigerating chamber and an air door of a temperature varying chamber. The fan motor control method comprises the following steps: obtaining an environment temperature of the refrigerator and current rotation speed of a compressor; determining an environment temperature state of the refrigerator according to the environment temperature; determining the voltage of a fan motor according to the environment temperature and the current rotation speed of the compressor. According to the fan motor control method of the refrigerator disclosed by the embodiment of the invention, the voltage of the fan motor is determined according to the environment temperature state and the current rotation speed of the compressor, so that the rotation speed of the fan motor is determined, the cooling speed is improved, the on-off time is optimized, an energy-saving effect is achieved, and the user experience is greatly improved.

A cold accumulating agent in the form of gel is prepared from attapulgite clay, urea, high-hydroscopicity resin and water through proportional mixing and stirring. Its advantages are high effect and no environmental pollution.

The invention discloses an air conditioner system and a control method thereof. The air conditioner system comprises an enhanced vapor injection compressor, a first reversing assembly, a second reversing assembly, two heat exchangers and a flash evaporator, wherein the enhanced vapor injection compressor is provided with an air exhausting port, an air supplementation port, a first air sucking port, a second air sucking port and an air return port; the pressure of a slide piece cavity of an air cylinder corresponding to the second air sucking port is equal to the air exhausting pressure of the air exhausting port; a first pipe port of the first reversing assembly is connected with the second air sucking port, a second pipe port of the first reversing assembly is connected with the air exhausting port, a third pipe port of the first reversing assembly is connected with a liquid storage device, and the first pipe port communicates with the second pipe port or the third pipe port; an air outlet of the flash evaporator communicates with the air supplementation port. The air conditioner system can use a double-rotor mode when large-capacity output is needed during refrigeration at high temperature and heating at low temperature and use a single-rotor mode during refrigeration at low temperature and heating at high temperature.

The invention relates to an air conditioner, in particular to a clapboard drain hole structure of a window air conditioner, which solves the problem of the reduction of efficiency due to the reason that the air convection of the inside and the outside of a chamber can not be cut off during the operation of the clapboard drain hole of the existing window air conditioner chamber. The structure comprises: a case forming the surface; a chassis for installing machine parts; a panel arranged in the inside of a case chamber, with a suction inlet at the lower side and a vent at the upper side; an evaporator arranged behind the panel; a water pan arranged below the evaporator; a discharge chute connected with the water pan; an indoor fan and a fan motor arranged at a clapboard behind the evaporator and an indoor air guide; a clapboard arranged at the chassis for dividing the window air conditioner into an inside and an outside; a drain hole arranged at the lower part of one side of the clapboard; a compressor arranged at the outside of the clapboard; an outdoor fan; an outdoor air guide; and a condenser arranged at the outside of the outdoor fan. The invention is characterized in that: the discharge chute below the drain hole of the clapboard is also designed with a U-shaped chute structure.

The invention discloses a rapid cooling type aircraft ground air conditioning unit and a control method of the rapid cooling type aircraft ground air conditioning unit. The highest cooling speed and the largest cold quantity input improve the rapid cooling and cold supplying capacity of the aircraft ground air conditioning unit, processed fresh air with a certain flow, cleanliness, proper temperature and high hydrostatic pressure is provided rapidly for an aircraft, the fresh air is fed to a cabin of the aircraft through a special air feeding hose, the fastest and best cooling effect is achieved for the cabin of the aircraft which stops at an aircraft boarding bridge for a short time, physiological requirements of staff in the cabin of the aircraft are met, high comfort level is achieved, the cooling requirements of precision devices in the cabin are met, a comfortable environment is provided for the staff in the cabin and aircraft operators, the metal state of the aircraft operators is improved, and the safety of driving the aircraft is improved. Meanwhile, fuel consumption produced when the aircraft waits on the ground is reduced, the service life of a self-matched expensive air conditioning system of the aircraft is prolonged, the pollution to air environment of an airport is reduced, and high economic and social benefits are achieved.

The invention discloses a wooden door with seal rollers, comprising a main body (1) of the wood door, wherein a rectangular groove (11) is moulded on the bottom end plane of the main body (1); vertical sliding chutes (12) are moulded on the left and right side edges of the rectangular groove (11); horizontal main shafts (2) are arranged in the sliding chutes (12); a plurality of vertical fulcrum shafts (4) are fixed on the main shafts (2); the fulcrum shafts (4) are sleeved in shaft sleeves (5) in an inserting way; the shaft sleeves (5) are fixed on the upper end plane of the rectangular groove (11); compressed springs (6) are arranged in the shaft sleeves (5); the lower ends of the compressed springs (6) lean against the top end planes of the fulcrum shafts (4); a plurality of rollers (3) are hinged to the main shafts (2). The gap of the door bottom is sealed by using the rollers with adjustable height, so that a larger gap can be reserved on the bottom of the door when the wooden door is manufactured so as to cope with the deformation, affected with damp, of the wooden door, the problem that the door cannot be closed due to the deformation can be effectively solved, and the speeds for rising and reducing the temperature of an indoor air conditioner can be increased in a seal way.

The invention discloses an air-conditioning system and a control method of the air-conditioning system. The air-conditioning system comprises an enhanced vapor injection compressor, a first commutating assembly, a second commutating assembly, two heat exchangers and a flash evaporator, wherein the enhanced vapor injection compressor is provided with an exhaust hole, an air supplementing hole, a first air suction hole, a second air suction hole and an air returning hole; the pressure of a slide sheet cavity of an air cylinder corresponding to the second air suction hole is the same as exhausting pressure of the exhaust hole; a first pipe opening of the first commutating assembly is connected with the second air suction hole; a second pipe opening is connected with the exhaust hole; a third pipe opening is connected with a liquid storage device; one of the first pipe opening, the second pipe opening and the third pipe opening is communicated; and a control valve is connected between a gas outlet of the flash evaporator and the air supplementing hole in series. According to the air-conditioning system disclosed by the invention, a double-rotor mode is utilized when high-temperature refrigeration and low-temperature heating need great energy output; and a single-rotor mode is utilized when low-temperature refrigeration and high-temperature heating are carried out.

The invention discloses a cabinet type air conditioner and a control method of the cabinet type air conditioner. The cabinet type air conditioner comprises a shell, an upper air guide plate assembly, a middle air guide plate assembly and a lower air guide plate assembly. The shell comprises an air outlet, wherein the air outlet is arranged in the height direction of the shell. The upper air guide plate assembly corresponds to the upper portion of the air outlet and is arranged in the height direction of the shell so that airflow which flows out of the upper portion of the air outlet can be guided. The middle air guide plate assembly corresponds to the middle of the air outlet and is arranged in the height direction of the shell so that airflow which flows out of the upper portion of the air outlet can be guided. The lower air guide plate assembly corresponds to the lower portion of the air outlet and is arranged in the height direction of the shell so that airflow which flows out of the lower portion of the air outlet can be guided. The upper air guide plate assembly and the lower air guide plate assembly are arranged in a mode of being independent of each other. By the adoption of the technical scheme, due to the fact that the upper air guide plate assembly, the middle air guide plate assembly and the lower air guide plate assembly are arranged in a mode of being independent of one another, air supply of the upper portion of the air outlet and air supply of the lower portion of the air outlet can be independent of each other, and the requirement of a user for the air outlet direction can be met.

The invention relates to a protecting device for a lead-acid storage battery for electromechanics, in particular to the protecting device for the lead-acid storage battery for electromechanics. The invention aims at providing the protecting device for the lead-acid storage battery for the electromechanics, the protecting device can be used for cooling the lead-acid storage battery under the condition of higher temperature and is high in safety. For solving the technical problems, the invention provides the protecting device for the lead-acid storage battery for the electromechanics. The protecting device comprises a wooden case, a first case cover, a sliding rail, a sliding block, a sliding rod, a sliding sleeve, a mesh putting frame and the like, wherein a first through hole is formed in the upper front side of the upper part of the wooden case; the first case cover is arranged above the first through hole and matched with the first through hole; the sliding rail is connected to the upper part of the left side in the wooden case in a bolt connecting mode; the sliding block is arranged on the sliding rail in a sliding manner. According to the protecting device provided by the invention, the lead-acid storage battery is protected by the wooden case; air in the wooden case is refrigerated by an ice block, and further the lead-acid storage battery is indirectly cooled.

The invention discloses a magnetic material sintering elevator furnace of an optimization circulation system and belongs to production equipment of magnetic materials. The magnetic material sintering elevator furnace of the optimization circulation system mainly comprises a furnace body, wherein an elevator system is arranged at the bottom of the furnace body, a load bearing plate is arranged under the furnace body, and the elevator system controls the load bearing plate. The magnetic material sintering elevator furnace further comprises a cooling circulation system A which comprises a circulation fan A, and the circulation fan A is connected with a hearth through a ventilation pipe. Air boxes are arranged on the left and right sides of the furnace body, and the ventilation pipe is connected with the hearth through the air boxes. Three or more air outlet devices are arranged on two sides inside the hearth. Each air outlet device comprises an air outlet pipe, a cavity and a circulation air hole which are sequentially connected, wherein the air outlet pipe is connected with the corresponding air box, and the circulation air hole is connected with the inside of the hearth. The internal air circulation convection is good, temperature, furnace pressure and atmosphere are uniform, and the glue discharging effect at the low temperature stage is largely improved. The magnetic material sintering elevator furnace of the optimization circulation system is mainly used for producing magnetic materials.

The invention discloses an air conditioner and a control method and device thereof. The control method can comprise the following steps that when the air conditioner runs in an automatic temperature rise mode, the air return temperature and the air outlet temperature of an indoor unit are obtained; according to the air return temperature and the air outlet temperature of the indoor unit, the air return temperature of the indoor unit is controlled to be smaller than or equal to the set temperature; the air return temperature and the air outlet temperature are continuously obtained, and if the temperature difference between the continuously-obtained air return temperature and air outlet temperature is in the preset first temperature range, the running frequency of a compressor is controlledto be reduced, and accordingly the air return temperature is increased to be in the preset second temperature range. Accordingly, when the air conditioner runs in the automatic temperature rise mode,the indoor temperature can be accurately and effectively controlled to be reduced to be lower than the set temperature, and accordingly the requirements of users are met; and after maintaining is conducted for a period of time, the indoor temperature is accurately and effectively increased by a certain temperature, the cold feeling caused by the too low human body surface temperature is avoided, and the user experience degree is greatly improved.

The invention discloses a portable electronic cooling instrument. The portable electronic cooling instrument has the advantages that the cold conduction medium of the electronic cooling instrument uses hydrogel materials as the cold conduction materials; the hydrogel materials are quite soft, can fit different forehead shapes and are high in comfortableness and capable of achieving even cold conduction; compared with the prior art, the portable electronic cooling instrument uses the hydrogel materials to transfer a cold source to the skin of a human body; under the premise of even cold conduction, due to the fact that the heat conductivity of the hydrogel materials is larger than that of water in the prior art, that is to say, the hydrogel materials are fast in cold conduction, the cold consumption of the hydrogel materials is low, the cold conduction efficiency of the hydrogel materials is high, the power consumption is low under the same cooling requirements, and the purposes of lowering power consumption, saving energy and increasing the endurance of the portable electronic cooling instrument can be achieved; in addition, the cold conduction medium is simple in manufacturing process and long in service life.

The invention relates to a co-rotating type cooling drum, which is specially suitable for fast cooling of high-temperature sands in casting industry and belongs to the technical field of cooling device structures. The co-rotating type cooling drum is characterized by being formed by a power transmission system installed on a base, a drum driven by the power transmission system and a cooling device. A feeding device and a discharging device are respectively connected at two ends of the drum. The co-rotating type cooling drum is reasonable in design, and due to contact between hot sand and inner wall of an outer tube and cooling media filled outside the outer tube, the hot sand in the outer tube moves to a sand cavity in rolling mode and exchanges heat with the cooling media water outside the outer tube. Due to the fact that one screw pitch can be moved in rolling mode when the hot sand in a spiral groove of the outer tube turns for one round, the longer the cooling time is, the better the cooling effect is, and area of cooling water is large. Therefore, cooling is fast. Further, rotating speed of the hot sand can be controlled by a frequency converter according to cooling conditions, maintenance is convenient, service life is long, yield is high, power consumption is low, electricity is saved and the co-rotating type cooling drum has wide application prospect.

The invention relates to the field of medical equipment, and particularly relates to an air suspension bed. The air suspension bed comprises a fixed frame and a suspension system, wherein the suspension system comprises an air blower and multiple air pockets, wherein the multiple air pockets are fixed on the fixed frame side by side, and each air pocket is provided with an air inlet for air inflation and an air outlet for quick air change; the air blower is connected with the air inlets, and used for inflating air in the air pockets; the air outlets are connected with the air blower, and used for completing air circulation. According to the air suspension bed disclosed by the invention, through arranging the air inlets and the air outlets at the two ends of the air pockets, hot air or cold air can enter and be discharged quickly, thereby improving the heating and cooling speed of the air pockets.

The invention provides a temperature control system and method for semiconductor temperature control, and relates to the field of semiconductor manufacturing equipment. The temperature control system comprises a refrigerating device, a circulating device and a control device. The circulating device comprises a heater, a water tank, a water pump, a first temperature sensor, a second temperature sensor and a control valve. An outlet of the water pump is communicated with an inlet of the refrigerating device, an outlet of the refrigerating device is communicated with a first connector of the control valve and an inlet of the heater, an outlet of the heater is communicated with an inlet of load equipment, an outlet of the load equipment and an outlet of the water tank are jointly connected with an inlet of the water pump, and an inlet of the water tank is communicated with a second connector of the control valve. The control valve is closed when the temperature control system is in a cooling or heating state, so that the amount of heat exchange liquid is reduced, the heating or cooling speed of the temperature control system is increased, the single process cycle is shortened, and the chip manufacturing efficiency is improved. By increasing the amount of the heat exchange liquid in the no-load or load state, the temperature control stability and the temperature control precision of the temperature control system are improved.

The invention provides a wall-mounted air conditioner indoor unit. The wall-mounted air conditioner indoor unit comprises a machine shell, wherein a plurality of first air supply ports are defined inthe front portion of the machine shell, an air duct communicating with the plurality of first air supply ports is defined in the machine shell, and the inner wall, close to the first air supply ports,of the air duct is in a gradually-reduced shape enabling the overflowing section of the air duct to be gradually reduced in the airflow direction; and a plurality of flow guide parts, wherein each flow guide part corresponds to one first air supply port and is arranged in the air duct, and an air outlet gap is defined between each flow guide part and the inner wall of the air duct, so that airflow blown to the corresponding first air supply port is guided to the inner wall of the air duct, and the airflow gradually flows out of the first air supply port towards an airflow center in a gatheredmanner under the guidance of the gradually-reduced portion on the inner wall of the air duct. Each flow guide part is configured to move in the front-back direction so as to be close to or away fromthe corresponding first air supply port, so that the size of the air outlet gap is adjustable. The wall-mounted air conditioner indoor unit has better long-distance air supply and strong air supply effects.

The invention discloses a high-efficiency pulverized coal burner for a dried pulverized coal fluidized bed gasification furnace. The high-efficiency pulverized coal burner comprises a pulverized coal annular channel and a pulverized coal hydrocyclone arranged in the pulverized coal annular channel, a center channel and an oxygen hydrocyclone arranged at the front end of the center channel, wherein cavity ducts in the front end of the pulverized coal annular channel and the front end of the center channel are both of a necking-down structure, dried pulverized coal and oxygen are respectively rotated and accelerated in a conveying process so as to be fully mixed and contacted within a short time and a distance range in a rotational flow manner, so that the dried pulverized coal is easily ignited and uniformly combusted; in addition, the high-efficiency pulverized coal burner is small in abrasion and long in service life.

The invention discloses workpiece quick cooling equipment for hot dip galvanizing and belongs to the field of hot dip galvanizing. The equipment comprises a base, wherein rollers are fixedly mounted at the bottom of the base, a transverse plate is fixedly connected to the side face of the base, an adjustment screw is arranged inside the transverse plate in a threaded and sleeved mode, an antiskiddisk is fixedly connected to the bottom end of the adjustment screw, a supporting sleeve is fixedly connected to the top of the base, and an adjustment rod is arranged inside the supporting sleeve ina movably sleeved mode. According to the workpiece quick cooling equipment for hot dip galvanizing, through the arrangement of a transmission shaft, a transmission motor, a transmission wheel, a conveying belt, an air conveying sleeve, an air inlet pipe, an air valve and an air outlet cover, in the cooling process of a hot dip galvanizing workpiece, cold air can be conveniently adopted to convey and cool the hot dip galvanizing workpiece, the problem that water resources are prone to waste in the traditional cooling mode of soaking in cold water is avoided, meanwhile the cooling speed of the hot dip galvanizing workpiece is increased, and therefore the working efficiency of hot dip galvanizing workpiece cooling is improved.

The invention discloses circulated cooling radiation screen, and belongs to the technical field of superconducting magnet cooling. The screen comprises a radiation screen outer cylinder. Two ends of the radiation screen outer cylinder are provided with radiation screen end plates and sealing. The outer surface of the radiation screen outer cylinder is provided with a helium gas pipe group, which comprises at least one helium gas pipe. The helium gas pipe is distributed in S-shape on the outer surface of the radiation screen outer cylinder. According to the circulated cooling radiation screen, the helium gas pipe distributed on the outer surface of the radiation screen outer cylinder can effectively absorb the heat of the radiation screen outer cylinder and radiation screen end plates, and therefore the internal low temperature environment of the radiation screen outer cylinder can be effectively guaranteed. Compared with the prior art of copper braid structure, the cooling speed is faster. The helium gas pipe is distributed in S-shape on the outer surface of the radiation screen outer cylinder, can uniformly absorb the heat of the radiation screen outer cylinder. Compared with the prior art of the copper braid, the circulated cooling radiation screen has the advantages of not only being compact in structure, longer in transmission distance, but also capable of reducing the temperature difference of the radiation screen outer cylinder.