53results about How to "Realize self-cooling" patented technology

The invention discloses a self-cooling guide vane downdraft type submersible pump, and belongs to submersible pumps. The self-cooling guide vane downdraft type submersible pump comprises a pump body casing (1) and an electromotor (2) which is arranged inside the pump body casing (1), wherein a water outlet joint (7) is further arranged on the pump body casing (1). The submersible pump further consists of a guide shell (3) which is hermetically fixed on the lower part of the pump body casing (1), and a water suction port (31) is arranged under the guide shell (3); the output shaft (21) of the electromotor (2) extends into the guide shell (3) and is installed in the interior of the guide shell (3) through a thrust bearing chamber (4), and an impeller (5) is further installed on the output shaft (21). Guide vanes in the guide shell can make water sucked in by the impeller pass through the guide shell more smoothly, and are beneficial to increase of the hydraulic efficiency of the submersible pump, with the lift from 12m to 60m. The self-cooling guide vane downdraft type submersible pump has simple structure, smaller volume and low production cost, and is suitable for the industrialized production.

The invention discloses a methanol-based fuel high-pressure supplying device. The device comprises a methanol tank, a water tank and a dimethyl ether tank which respectively contain methanol, water and dimethyl ether; both the methanol tank and the water tank are connected with pre-pressurizing systems; the dimethyl ether tank is connected with a mixed measuring system; the pre-pressurizing systems and the mixed measuring system are connected, wherein the mixed measuring system is sequentially connected with a pressurizing system and an engine; in addition, the pressurizing system and the pre-pressurizing systems are all connected with air compressing devices. The methanol-based fuel high-pressure supplying device has the beneficial effects that methanol, dimethyl ether and water are mixed based on different ratios; in addition, the online control is realized; the demand on material supply at different pressures can be realized under a high pressure of 100 MPa; meanwhile, the flow rate can be adjusted within a certain range, and the utilization rate of the methanol-based fuel can be raised; the supplying system has a wide range of output pressure and can directly enter an internal combustion engine and other energy consumption devices without pressure reduction, and thus the energy consumption can be reduced; the self-cooling is realized, the operation can be individually performed, the pollution resource is avoided, and the long-time, safe, stable and reliable operation is reached.

The invention discloses a pollutant processing device based on dielectric barrier discharge plasma. The pollutant processing device is characterized by comprising a water tank and a discharge component, wherein the water inlet of the water tank is connected with a water feeding pipe; the water outlet of the water tank is connected with a water discharging pipe; the discharge component comprises ahigh-voltage electrode, insulating media, a micro-channel element and an insulating ring; the water tank is earthed, or an earthing electrode is arranged in the water tank; the insulating media are arranged on the bottom in the water tank; the high-voltage electrode is tightly attached to the lower side of the insulating media; the insulating ring is near or is tightly attached to the upper side of the insulating media; the micro-channel element is positioned in the insulating ring, is provided with a plurality of micropores, and is made of insulating materials. According to the pollutant processing device disclosed by the invention, self temperature reduction and cooling during discharge can be realized, and meanwhile, refractory organic pollutants can be efficiently processed at low cost.

The invention discloses a waste processing device based on two-sided micro-duct dielectric barrier discharge. The waste processing device is characterized by comprising a water tank, a discharge component and a micro-duct component, wherein a water outlet of the water tank is connected with a water discharging pipe; the water tank is grounded, or a grounding electrode is arranged in the water tank; the discharge component comprises a high-voltage electrode and an insulating medium, wherein the insulating medium is arranged in the water tank; the insulating medium is provided with a high-voltage electrode containing cavity, and the high-voltage electrode is positioned in the high-voltage electrode containing cavity; the micro-duct component comprises two micro-duct elements and a cover element; the two micro-duct elements and the insulating medium are all positioned in the cover element; in addition, the two micro-duct elements are respectively positioned on two sides of the insulatingmedium; the two micro-duct elements are respectively provided with a plurality of micro-pores; the cover element is provided with a pipeline joint; the pipeline joint is externally connected with an pipeline. According to the waste processing device, refractory organic pollutants can be processed in a self-cooling, high-efficiency and short-process discharge plasma way.

The invention relates to the technical field of submersible electric pumps, and provides an integrated pipeline pump. The integrated pipeline pump comprises a pump shell, an impeller shaft, a pump impeller, a motor stator and a motor rotor, wherein the impeller shaft is connected with the pump shell through a plurality of pump guide vanes; a stator groove is formed in the inner wall of the pump shell; the motor stator is arranged at the bottom of the stator groove; the motor rotor is arranged on the rim of the pump impeller; an air gap is arranged between the motor rotor and the motor stator;a first flow passage and a second flow passage are respectively arranged between the two sides of the pump impeller rim and the two groove walls of the stator groove; and the first flow passage and the second flow passage respectively communicate with two ends of the air gap. According to the integrated pipeline pump, a cooling channel formed by the first flow channel, the air gap and the second flow channel is arranged between the motor stator and the motor rotor, and water flow pumped to the cooling channel is utilized, therefore, the natural water cooling of the motor stator and the motor rotor of the pipeline pump in the working process is achieved, and the safe and stable operation of the pipeline pump is ensured.

The invention discloses a die locking mechanism for a die casting machine directly driven by a frameless combined type permanent magnet synchronous linear motor. The die locking mechanism for the diecasting machine comprises a mounting plate, guide columns, a movable die plate and a fixed die plate; the mounting plate is connected to the fixed die plate through the guide columns; guide holes matched with the guide columns are formed in the movable die plate, and the movable die plate is connected to the guide columns through the guide holes in a sliding manner; the movable die plate is fixedly connected to a thrust screw rod, and the thrust screw rod is used for providing thrust by rotation of a nut which is fixed on a motor mounting base through a bearing and is matched with the thrust screw rod, and the motor mounting base is fixed on the mounting plate; and the nut is directly driven by the frameless combined type permanent magnet synchronous linear motor. According to the die locking mechanism for the die casting machine directly driven by the frameless combined type permanent magnet synchronous linear motor, middle transmission parts are reduced, structure is simple, the transmission efficiency is high, and torque is large.

The invention discloses a medium-caliber juicer structure and aims to provide a juicer structure effective in crushing and juicing of vegetables and fruits, high in juice yield, less waste and stable and efficient in juicing. The juicer structure comprises a lower base, an upper body, a feeding part, a juice collection plate and a main barrel, the main barrel above the juice collection plate comprises a discharging cylinder and a feeding cylinder, an inner space of the feeding cylinder and an inner space of the juice collection plate jointly form a juicing cavity, and a juicing screen component and a juicing screw rod are arranged in the juicing plate. The feeding part comprises a feeding plate and a charging cylinder, the side wall of the charging cylinder is provided with a large main charging opening with a feeding size being 50-65mm. The medium-caliber juicer structure has the advantages that vegetable and fruit materials different in size and hardness can be effectively juiced, and stability in crushing and high juicing rate are achieved; by the aid of a scraping structure, local blockage of an inner juicing screen can be avoided, and high smoothness in a juicing process is realized; automatic heat dissipation of a motor and less proneness to heat accumulation can be realized, and the service life is guaranteed; the juicer structure is high in safety due to a protection structure.

The invention belongs to the technical field of servo hydraulic pressure, and particularly relates to a servo motor pump. The servo motor pump comprises a shell, an oil distributing disc, a plunger pump core, a motor pump shaft, a motor rotor, a motor stator, a rotary transformer, a mounting seat, a rear end cover, a rotary transformer electric connector, a filter element and a wave spring; the oil distributing disc is fixed to the interior of the shell; the plunger pump core is connected with the motor pump shaft; the wave spring is mounted between the axial direction of a deep groove ball bearing and the mounting seat; the mounting seat is connected with the shell; the filter element is inserted into the shell; the motor rotor is arranged on the motor pump shaft in a sliding and interference manner; the motor stator is fixed to the interior of the shell; a stator of the rotary transformer is fixed to the mounting seat; a rotor of the rotary transformer is fixed to the tail end of the motor pump shaft; and the rear end cover is fixedly connected with the mounting seat. According to the servo motor pump, a power unit with energy converting and controlling functions can be provided, and high-pressure oil with different flow rates and directions can be output to a hydraulic system according to a driving control command.

The invention discloses a power generation device based on waste heat of waste water. The power generation device comprises a device main body; the device main body is located on the upper side of a high pressure water pipe; a cooling water box is arranged in the upper end wall of the device main body, and the lower side of the cooling water box is provided with a circulating device; the lower side of the circulating device is provided with an air cooling through hole, and the two sides of the air cooling through hole are provided with symmetrical through shaft gear cavities; and through shafts communicating with the through shaft gear cavities on the two sides are arranged. According to the power generation device, heat of the high-temperature waste water is converted into mechanical energy for power generation, energy of the high-temperature waste water is sufficiently utilized, energy wasting is reduced, meanwhile, water circulation and air cooling are arranged for self cooling, andequipment does not need to be additionally arranged for cooling.

The invention discloses a bell jar type wind cap for an environment-friendly energy-saving circulating fluidized bed boiler, belongs to the technical field of boiler structures, and solves the problems that a conventional wind cap is liable to slag leakage, a wind cap head and a wind cap seat are severely abraded, and the cost is high and economy is poor due to the fact that the wind cap is uneasy to change after abrasion. The bell jar type wind cap comprises the wind cap head, a protective sleeve and the wind cap seat, wherein the wind cap seat comprises a cylinder and a support plate; the support plate is mounted at the upper part of the cylinder in a sleeving manner; the protective sleeve comprises a barrel body and a locating ring fixedly connected on the outer edge of an open end of the barrel body; a plurality of first through holes are uniformly formed in the side wall of the upper part of the barrel body; a plurality of second through holes are uniformly formed in the top of the barrel body; the wind cap head and the protective sleeve are mounted on the support plate in a buckle manner; the wind cap head is fixedly connected with the support plate; the protective sleeve is positioned between the wind cap head and the wind cap seat; the outer side wall and the top outer edge of the locating ring are in tight contact with the inner wall of the wind cap head; and the wind cap head, the protective sleeve and the cylinder are coaxially arranged. The bell jar type wind cap is used for an air distribute device of the circulating fluidized bed boiler.

The invention relates to the technical field of waste treatment, in particular to a plasma generator. The plasma generator comprises a cathode, an arc striking anode and an anode which are sequentially and coaxially connected in series. The cathode is provided with a cathode head, a cathode sleeve and a first cooling channel for cooling the cathode head. The anode is provided with an anode lining,an anode jacket and a second cooling channel for cooling the anode lining. The arc striking anode comprises an arc striking anode lining, a plasma generating chamber which is located on one side, facing towards the cathode head, of the arc striking anode lining and is used for the arc striking anode to break down the working gas to form a plasma, and a preheating chamber which is arranged aroundthe outside of the arc striking anode lining for heat exchange between the low-temperature working gas and the high-temperature arc striking anode lining, wherein the preheating chamber and the plasmagenerating chamber are communicated with each other. The plasma generator has the advantages of simple structure, few parts, small volume and high heat recovery rate.

The purpose of the present invention is to provide an independent isolation and flushing system of double-end mechanical seals for centrifugal pumps, to overcome various defects and disadvantages of centrifugal pump mechanical seals during use, to improve the stability of mechanical seal operation, and to increase the resistance to harsh conditions. The adaptability to the working conditions prolongs the service life and meets the requirements of use. In order to achieve the above purpose, an independent isolation and flushing system for a double-end mechanical seal for a centrifugal pump is provided, which is characterized in that it includes a double-end mechanical seal, an isolation cavity assembly, a shaft sleeve and a sealing gland. In order to achieve the above purpose, it is also possible to provide an independent isolation and flushing system for double-end mechanical seals for centrifugal pumps, which is characterized in that it includes double-end mechanical seals, pumping structures, seal boxes, shaft sleeves, sealing glands and liquid storage tanks Assembly, liquid storage tank assembly is filled with spacer fluid for circulating lubrication and cooling. Above-mentioned two kinds of schemes can be implemented independently, reach the object of the invention independently, embody beneficial effect.

The invention relates to a rotor self-radiating system for a pump. The rotor self-radiating system for a pump comprises a driving part, a pump case and an impeller. The impeller is arranged in the pump case, the driving part is connected to the impeller, the impeller comprises an impeller body and a plurality of fan blades, one end of the impeller body is convexly provided with a heat conduction rotary shaft, the plurality of fan blades are arranged around the periphery of the impeller body, the heat conduction rotary shaft convexly extends outside the pump case and is connected to the drivingpart, a radiating fin is arranged on the end part of the heat conduction rotary shaft, and the radiating fin is aligned with the driving part. The rotor self-radiating system for a pump is better inradiating effect.

The invention relates to an electromagnetic direct-drive linear hydraulic pump based on dissymmetric-flow-pass heat dissipation. The pump comprises a linear actuator rotor, linear actuator stators, anend cover, a hydraulic cylinder block, a piston, an air inlet flow pass, an exhaust flow pass, a valve body and a one-way valve. The pump is characterized in that the linear actuator rotor is integrated with the piston of the hydraulic piston to serve as a rotor, and an inner chamber of the hydraulic pump is divided into a pump liquid chamber Q and a pump air chamber A; the linear actuator outerstator and the linear actuator inner stator are axially fixed through the end cover, an air gap is formed between the linear actuator outer stator and the linear actuator inner stator, and the linearactuator outer stator is fixedly connected with the hydraulic cylinder block, fixedly connected with the valve body, to serve as a stator; the pump air chamber A communicates with the environment through the air gap, the air inlet flow pass and the exhaust flow pass respectively, and the axial section of each flow pass is trapezoid; and the linear actuator rotor directly drives the piston to moveback and forth, and is used in cooperation with the air inlet flow pass and the exhaust flow pass to carry out pump suction of air in the pump air chamber to carry out air cooling heat dissipation onthe interior of the linear actuator. With the electromagnetic direct-drive linear hydraulic pump based on dissymmetric-flow-pass heat dissipation, the problems that an electromagnetic direct-drive linear hydraulic pump emits much heat, and particularly, the heat inside is difficult to emit are solved.

The invention belongs to the technical field of workpiece machining, and particularly relates to an autonomous cooling polishing and grinding robot. The autonomous cooling polishing and grinding robotcomprises a rotary disc, a first base is installed on one side of the rotary disc, a first telescopic rod is installed on the upper surface of the first base, a first rotary plate is fixedly connected to the outer side wall of the first telescopic rod, a grinding part is rotationally connected to the bottom face of the end face of the first rotary plate, and a fixed barrel is installed on the bottom face of the rotary disc. A cleaning part which rotates rapidly sweeps away chippings on a workpiece, the cleaning effect is achieved, and finally, when the cleaning part rotates to a second conveying belt, a sensor detects the existence of the workpiece, an electric push rod descends to drive an air cylinder to descend, a telescopic shaft of the air cylinder drives a push plate to stretch out,the workpiece in a containing groove is pushed to the second conveying belt, and the second conveying belt completes the conveying process of the ground workpiece. In conclusion, automatic process operation is formed for polishing and grinding of the workpiece, automatic machining is facilitated, and the polishing and grinding efficiency is improved.

The invention discloses a multi-serial-port parallel communication transformer, which comprises an equipment communication platform and a plurality of transformers connected in series with the equipment communication platform through an M-BUS bus, wherein the equipment communication platform is communicated with each transformer through an independent communication protocol; and data transmissionamong multiple transformers is carried out by means of polling. The transformer is an oil-immersed current transformer. The oil-immersed current transformer comprises an oil tank. The upper end of theoil tank is fixedly connected with the lower end of a porcelain sleeve; and the upper end of the porcelain sleeve is fixedly connected with an expander. The expander comprises a housing and a rippleexpander body arranged in the housing. The expander is provided with a cooling coil and piston rods, and self heat radiation is realized by utilizing expansion kinetic energy of the expander. The multi-serial-port parallel communication transformer can realize self heat radiation and can reduce use of the cooling water; a main device is designed to control multiple serial port digital transformers; and the transformer can reduce wiring distance, is convenient to install, and is safer in serial port communication and does not lose data.

The invention discloses a pollutant treatment device utilizing foam dielectric barrier discharge plasma. The pollutant treatment device is characterized in that the device comprises a water tank and adischarge assembly; a material feed of the device enters the device in the form of a gas-liquid mixture; the discharge assembly comprises a high-voltage electrode, insulating media and an aeration disc (a micro-pore channel element); the insulating media are arranged in the water tank, the medium 1 is fixed through a base, and the medium 2 is tightly attached and fixed to the medium 1; the high-voltage electrode and the ground electrode are located between the insulating medium 1 and the insulating medium 2 respectively; the electrode is tightly attached between the two insulating media; theaeration disc is located between two electrode assemblies; the surface of the aeration disc is close to the medium 2; and gas and liquid on the surface of the aeration disc uniformly flow out when a gas-liquid mixture is introduced. According to the device, self-cooling during discharging can be realized, and degradation-resistant organic pollutants can be treated with a low cost and a high efficiency.

The invention relates to the technical field of waste treatment, and in particular to a plasma destruction system. The plasma destruction system comprises a plasma destruction furnace, a flue gas cooling chamber, a flue gas filtering purification chamber and an induced air system which sequentially communicate along the direction of flue gas; the plasma destruction furnace comprises a destructionchamber, a plasma generator, a gas inlet and a flue gas outlet, wherein the destruction chamber is surrounded by a refractory layer and a burning bearing plate, and is used for containing media to bedestructed; the destruction chamber is provided with an air outlet; the burning bearing plate is positioned at the bottom of the destruction chamber; the plasma generator is used for conveying plasmajet to the destruction chamber; the gas inlet communicates with a gas supply system for generating compressed gas; and the flue gas outlet communicates with the flue gas cooling chamber. The device has advantages of being simple in structure, small in size and wide in application range.

The invention discloses a sliding vane type working medium pump of a two-phase flow refrigerating system. The sliding vane type working medium pump comprises an air inlet cover, a bearing seat, a coupling connecting body, a rotor shell and a front press cover of the rotor shell, which are connected in series in sequence, wherein a motor is arranged between the bearing seat and the coupling connecting body; a machine core of a pump body is arranged in the rotor shell and comprises a cylinder body and a rotor shaft arranged in the cylinder body; an air suction hole and an exhaust hole are formed in the cylinder body; the rotor shaft is connected with a motor shaft of the motor through a coupling arranged in the coupling connecting body; multiple sliding vane are arranged on the circumference of the rotor of the rotor shaft in a counterclockwise array; when the machine core of the pump body operates, one of two adjacent sliding vanes is tangent to the hole opening of the air suction hole and the other one of the two adjacent sliding vanes is in contact with the exhaust hole, and the machine core of the pump body stops air suction process and starts exhaust process. According the sliding vane type working medium pump of the two-phase flow refrigerating system, the two-phase flow refrigerating system can stably operate under various working conditions; the energy consumption of the system is saved; working medium is not compressed and is only used for providing power to realize the two-phase flow refrigerating system.

The invention discloses a cable cooling system used for a charging gun. The system comprises an insulation flexible pipe filled with an insulation cooling liquid. The insulation flexible pipe and a lead in a cable are bundled into the cable, a gap between the insulation flexible pipe and the lead is filled with a filler with good insulation and heat dissipation performance, and a surface of the cable is wrapped by the filler. One end, close to a charging gun head jack, of the insulation flexible pipe is connected with a spiral cooling pipe with good thermal conductivity, one end of a cooling pipe is embedded into a port of the insulation flexible pipe in an interference fit mode, and the other end of the cooling pipe is connected to a circulating water cooling system through a water returnpipe to achieve dynamic circulating cooling. The cooling pipe is spirally and coaxially arranged on an outer wall of a metal spigot and socket pipe connected with the jack. An inserting portion of the lead is inserted into the spigot and socket pipe so that electrification is achieved. The cable of the charging gun can be rapidly cooled, charging efficiency is improved, and a service life is prolonged.

The invention discloses a tower-cabinet integrated communication base station. The tower-cabinet integrated communication base station comprises a base, a single-pipe tower main rod mounted on the upper portion of the base, and a supporting piece arranged around the base and the single-pipe tower main rod, a machine cabinet is arranged on the base, and a powerless ventilator is arranged at the topof the single-pipe tower main rod. The air outlet end of the powerless ventilator communicates with the bottom of the machine cabinet through an air guiding pipe, the air guiding pipe penetrates through the interior of the single-pipe tower main rod and the base, and the pipe diameter of the end, close to the machine cabinet, of the air guiding pipe is gradually decreased. According to the base station, by means of a powerless ventilating system, self-ventilation and self-temperature reduction of the machine cabinet are achieved, the effects of energy saving and emission reduction are achieved, and meanwhile the air quality condition can be detected and displayed.

The invention relates to a speed-adjustable stirring tank with cooling and temperature sensing functions, which comprises a tank body, a cooling layer is arranged on the outer side of the tank body, adischarging pipe, a steam inlet and a valve switch are arranged below the tank body, an air filter and an air inlet are arranged on the right side of the discharging pipe, and a sampling pipe is arranged on the left side of the tank body, a temperature sensor control device and a cooling water inlet are arranged below the sampling pipe, a biosensor is arranged on the right side of the tank body,a cooling water outlet is arranged above the biosensor, a filter screen is arranged in the tank body, a stirring shaft and stirring blades are arranged above the filter screen, and a speed regulatingdevice and a stirring motor are arranged above the stirring shaft; the upper end of the tank body is provided with a nutrient adding port, an observation hole, an exhaust pipe, an exhaust pipe, a PH meter and a dissolved oxygen detector. By arranging the temperature sensor control device, the cooling layer and the speed adjusting device, the problems that a common stirring tank does not have a cooling function, real-time temperature sensing cannot be conducted, and the stirring speed cannot be conveniently adjusted are solved.

The invention relates to a high-power DC solid-state power controller with an integrated radiation structure. A shell of the controller integrates a radiator structure and a solder cup structure so as to better radiation effects and realize high sealing performance and anti-electromagnetic interference characteristics. An internal power controller component is completely connected with a heating part (10) by a double-sided ceramic copper-clad plate to form a good radiation path. A kover sleeve is connected with an output leading-out rod to ensure the sealing performance of the controller. Thesolder cup-shaped kover sleeve reduces difficulties in the sealing assembly of a bottom plate and the output leading-out rod, and also ensures secure connection with the lowest contact resistance between the output leading-out rod and a long diversion bar and between the output leading-out rod and a short diversion bar. A horizontal diversion bar is connected with an output circuit so as to maximally save an internal space and maximally reduce voltage drop on the output circuit. A control circuit is arranged on a circuit board, and is positioned in a central layer of the structure. The overall design of the controller ensures high radiation performance and high sealing performance, and realizes high power density with a small volume.

Disclosed is a gantry robot moving mechanism directly driven by a frameless permanent-magnet synchronous motor. The gantry robot moving mechanism comprises tracks and rolling wheels matched with the tracks; the rolling wheels are arranged on a rack of a gantry robot moving mechanism body; the gantry robot moving mechanism moves along the tracks through the rolling wheels; the gantry robot moving mechanism further comprises a rotating shaft, a gear fixed at one end of the rotating shaft and a rack matched with the gear; the rack is parallelly arranged with the tracks; the rotating shaft is fixedly mounted in the frame of the gantry robot moving mechanism body through a bearing; the rotating shaft is directly driven through the frameless permanent-magnet synchronous motor. The frameless permanent-magnet synchronous motor is simple in structure, high in driving efficiency and large in torque.

The invention relates to the field of cable materials, and concretely relates to an insulation self-heat-radiating rubber sheath for a cable, and a preparation method thereof. The insulation self-heat-radiating rubber sheath for the cable is prepared from the following concrete components: 20 to 25 parts of polyether-ether-ketone, 20 to 25 parts of polyethylene terephthalate, 15 to 20 parts of mica powder, 15 to 20 parts of graphite powder, 13 to 15 parts of glass powder, 10 to 12 parts of ceramic powder, 7 to 9 parts of alkyd resin, 6 to 8 parts of isopropyl biphenyl, 4 to 6 parts of ester oil, 3 to 5 parts of sodium cyanide, and 2 to 4 parts of foaming agent. The preparation method of the insulation self-heat-radiating rubber sheath for the cable comprises the following concrete steps of(1) melting; (2) adding ingredients; (3) foaming; (4) pressing wrapping. The insulation self-heat-radiating rubber sheath for the cable provided by the invention is high temperature resistant by adding mica, graphite, glass and ceramic for self-heat-radiating, and good in wear resistance by adding the ester oil and rubber materials for fully melting. Compared with a common rubber sheath, the insulation self-heat-radiating rubber sheath for the cable provided by the invention can be used for self-heat-radiating, so that the transmission loss brought by high temperature in the cable is reduced,and the service life of the cable sheath is prolonged.

The invention provides an industrial injection molding machine with a protection mechanism, which comprises: a plurality of self-cooling assemblies, which can automatically cool at high temperature, are fixedly mounted at the upper and lower ends of the outer surfaces of the left and right sides of an injection molding base in equal adjacent rows; the self-cooling assembly comprises a main shell, an upper auxiliary shell, a lower auxiliary shell, an upper discharging assembly and a lower discharging assembly, wherein the upper discharging assembly can guide out one kind of cooling materials at the high temperature, and the lower discharging assembly can guide out the other kind of cooling materials at the high temperature. A plurality of main shells are adjacently and fixedly mounted at the upper and lower ends of the outer surfaces of the left and right sides of the injection molding base; an upper auxiliary shell is fixedly installed in the upper through groove in a penetrating mode. According to the industrial injection molding machine with the protection mechanism, the outer side of the injection molding base can have a self-cooling function, when an injection molding head injects raw materials in a mold, even if heat is transferred out of the injection molding base, the heat can be timely cooled and dissipated, and the potential safety hazard that injection molding personnel are scalded when accidentally making contact with the injection molding base is eliminated.

The invention discloses a shield construction machine cutterhead mechanism directly driven by a frameless permanent magnet synchronous motor. The shield construction machine cutterhead mechanism comprises a cutterhead, a rotation shaft and bearings. The shield construction machine cutterhead mechanism is characterized in that the cutterhead is fixedly arranged at one end of the rotation shaft; therotation shaft is fixedly arranged in a base of a front end body of a shield construction machine through the bearings; the rotation shaft is directly driven by the frameless permanent magnet synchronous motor. The shield construction machine cutterhead mechanism directly driven by the frameless permanent magnet synchronous motor is high in transmission efficiency, low in noise and large in torque.

The invention discloses a die-casting machine clamping mechanism directly driven by a frameless permanent magnet synchronous motor. The die-casting machine clamping mechanism comprises an installing plate, a guide post, a movable die plate and a fixed die plate, wherein the installing plate is connected with the fixed die plate through the guide post; the movable die plate is provided with a guidehole matched with the guide post and is connected with the guide post in a sliding mode through the guide hole; a thrust screw is fixedly connected with the movable die plate, and a nut fixed to a motor installing seat through a bearing and matched with the thrust screw rotates to provide thrust force for the thrust screw; the motor installing seat is fixed to the installing plate; and the nut isdirectly driven by the frameless permanent magnet synchronous motor. According to the die-casting machine clamping mechanism directly driven by the frameless permanent magnet synchronous motor, a middle transmission component is omitted, the structure is simple, the transmission efficiency is high, and the torque is large.