44results about How to "Suitable for working conditions" patented technology

The invention discloses an underground unmanned trackless rubber wheel vehicle having the infrared top tracking function, and a driving control method of the underground unmanned trackless rubber wheel vehicle. The underground unmanned trackless rubber wheel vehicle comprises a sensing system, a control system, an execution system and a vehicle body. A plurality of groups of sensors in the sensingsystem are electrically connected with a PLC in the control system. The PLC is electrically connected with a vehicle controller (VCU). The VCU is electrically connected with an electric motor, a steering motor and a hydraulic oil pump in the internal execution system of the vehicle through a driving circuit so as to control the electric motor, the steering motor and the hydraulic oil pump. According to the invention, a radar laser sensor is installed on the head of the vehicle body, and an infrared sensor is installed on the top of the vehicle body. Ultrasonic sensors are installed on the twosides and the tail of the vehicle body. A speed sensor is installed on the rear driving wheel of the vehicle body. Through reasonably arranging the positions of the above sensors on the vehicle body,the information of the surrounding environment is acquired by means of the signal feedback. After that, a proper driving mode is executed according to a formulated driving control strategy. The wholevehicle unmanned driving system is safe and efficient, and the labor intensity of underground workers can be effectively relieved. The efficiency and the safety of the underground auxiliary transportation system are improved.

The invention discloses an intelligent water-cooling permanent magnet frequency conversion direct-driving system for a scraper conveyor and belongs to the technical field of transportation of underground coal mine materials. The intelligent water-cooling permanent magnet frequency conversion direct-driving system mainly comprises permanent magnet motors, a controller, a frequency convertor I and the like. One ends of the permanent magnet motors are directly connected with chain wheels through couplers, and no decelerator is arranged between the permanent magnet motors and the chain wheels. Theintelligent water-cooling permanent magnet frequency conversion direct-driving system further comprises a coder I, a coder II, a tension and pressure sensor and a cooling auxiliary device, wherein the coder I is connected with the other end of the scraper conveyor chain wheel I, and the coder II is connected with the other end of the scraper conveyor chain wheel II. The cooling auxiliary device particularly comprises a water tank, a water pump, a cooler, a two-position three-way electromagnetic valve, a temperature sensor I, a temperature sensor II, a water pipe, a frequency convertor serpentine cooling water pipe and a permanent magnet synchronous motor cooling water pipe. According to the intelligent water-cooling permanent magnet frequency conversion direct-driving system for the scraper conveyor, the defects that according to an existing underground coal mine scraper conveyor driving system, a transmission chain is excessively long, the driving characteristic is poor, heavy load starting is insufficient, the cooling effect of a frequency conversion driving system is insufficient and other defects are overcome.

The invention provides a water quality heavy metal online analyzer and an analysis method based on an X-ray fluorescence technology and belongs to the technical field of environment monitoring. The water quality heavy metal online analyzer comprises a water sample atomization system, a sample enrichment system, a detection system, a filter belt transmission system and a control collecting system. Atomized samples produced by the water sample atomization system are transmitted to the sample enrichment system through a silicone tube or a metal tube, the filter belt transmission system transmits enriched spots to the detection system after sample enrichment, and control of all the systems and data collection are completed automatically and coordinately through intelligent software built in the control collecting system. The water sample atomization system, the sample enrichment system, the filter belt transmission system and the detection system are connected with the control collecting system through data lines. The analysis method comprises water sample collection, atomization and sample enrichment, water sample discharge and sample test. The water quality heavy metal online analyzer and the analysis method based on the X-ray fluorescence technology have the advantages that the test limit is ultralow, and simultaneous test of multiple water quality heavy metal elements can be realized. Besides, the maintenance cost is reduced, and secondary pollution is avoided.

The invention discloses an efficient temperature control system. The efficient temperature control system includes a low pressure steam generation apparatus and at least one reaction vessel, wherein a clamping sleeve is arranged in the reaction vessel; the clamping sleeve is provided with a low pressure steam inlet and a condensate liquid outlet; the low pressure steam inlet utilizes a low pressure steam conveying pipe to communicate with a low pressure steam outlet of the low pressure steam generation apparatus; and the low pressure steam generated from the low pressure steam generation apparatus enters the clamping sleeve to perform temperature control heating on the reaction vessel. The invention also provides a temperature control method for implementing the efficient temperature control system. The efficient temperature control system and the temperature control method thereof can save the industrial steam, are high in the heat energy utilization rate, can accurately control the temperature of the steam, and also can guarantee that the heating steam is in the low pressure state so that the safety is guaranteed.

The invention relates to a digital intelligent driving device of a high-power IGBT (insulated gate bipolar translator). The digital intelligent driving device comprises a DC / DC (direct-current) conversion circuit, a CPLD (complex programmable logic device) logic control module, an active clamping feedback module, a retreating-protection over-current feedback module and a two-stage di / dt detecting module, wherein the output end of the DC / DC conversion circuit is connected with an undervoltage protection module; the output end of the undervoltage protection module is connected with the CPLD logic control module; and the input end of the CPLD logic control module is connected with a PWM (pulse-width modulation) pulse-width modulator, and the output end of the CPLD logic control module is connected with a variable-gate resistance module. The digital intelligent driving device provided by the invention has the advantages that the protection functions such as power isolation, over-current protection, di / dt and active clamping are integrated, the logic control is realized by adopting the programmable logic device CPLD, the ideal driving performance is achieved by real-time variable-gate resistance driving, and soft shut-off is realized by selecting proper shut-off resistance according to the over-current degree, so that the switching loss is effectively reduced and a Miller effect is weakened.

The invention relates to an industrial wastewater recycling processing system which comprises a filtering device, a membrane concentrating device and an evaporating device, wherein the filtering device comprises an ultrafiltration water supply pump, a bag filter and a security filter, and the membrane concentrating device comprises an ultrafiltration membrane assembly, a reverse-osmosis water supply pump, a precise filter, a primary high-pressure pump, a secondary high-pressure pump, a reverse-osmosis membrane assembly and a cleaning pump; and the evaporating device comprises a condenser, a single-effect evaporator, a two-effect evaporator, a water tank, a concentrated solution pump and an evaporation water supply pump. The invention thoroughly changes the processing method of electroplating wastewater and has the advantages of good water quality of membrane outlet water, small occupied area of equipment, no need of attendance in operation and convenient use; and the invention does not use a chemical agent, conforms to the requirements of environment-friendly and clean electroplating, can be used for recycling useful metal while processing electroplated rinsing wastewater, and not only can create more economic benefit, but also can bring social benefit and environmental benefit, reduce the pollution, save the resources, protect the environment and benefit the mankind.

The invention discloses a mechanical seal suitable for an ANSI standard pump cavity. An end cover is arranged on a shaft sleeve in a sleeving mode, and a medium side seal and an atmosphere side seal are installed on the two sides of the end cover respectively and arranged on the shaft sleeve in a sleeving mode. The medium side seal comprises a medium side rotation ring, a medium side compensation ring and a medium side spring, wherein the medium side rotation ring, the medium side compensation ring and the medium side spring are sequentially installed on the shaft sleeve, one end of the medium side spring makes contacts with the medium side compensation ring, and the other end of the medium side spring is installed in the end cover. The atmosphere side seal comprises an atmosphere side rotation ring, an atmosphere side compensation ring and an atmosphere side spring, wherein the atmosphere side rotation ring, the atmosphere side compensation ring and the atmosphere side spring are sequentially installed on the shaft sleeve, one end of the atmosphere side spring makes contact with the atmosphere side compensation ring, and the other end of the atmosphere side spring is installed in the end cover. The mechanical seal has the advantages of being compact in structure, small in radial dimension and suitable for narrow space; by the adoption of balance type multi-spring design, the mechanical seal is good in sealing effect; because the springs do not make contact with medium materials and pressure borne by the whole seal is offset, the mechanical seal is capable of bearing two-way pressure and suitable for working conditions of various media.

The invention discloses a whole wheat flour production process for intermediate extraction and treatment of gluten materials, including impurity removal, wheat tempering, wheat grain grinding, sorting, bran grinding and backfilling. The wheat bran containing part of the endosperm is selected as the raw material of wheat bran, and the raw material of wheat bran is pretreated by extrusion technology, then the raw material of wheat bran is ground, and finally the raw material of wheat bran after grinding is returned to Add and mix with the flour separated from the wheat mill to form wholemeal flour. The invention has a reasonable design, is easy to transform the flour mill, saves energy consumption, and has a good effect on improving the quality of whole wheat flour, is especially suitable for producing high-quality whole wheat flour, can significantly improve its palatability and processing and application characteristics, and prolong the shelf life of whole wheat flour In the long term, it will have good economic benefits after promotion.

The invention provides a high-silica fiber woven film-coated filter material for coal-fired boilers, which includes a four-layer structure, which is an impregnated protective layer, a high-silica fiber expanded cloth layer, an impregnated protective layer, and polytetrafluoroethylene. Ethylene microporous film layer; the high-silica fiber expanded cloth is a double-layer woven fabric woven by a double-layer variable twill process; the high-silica fiber expanded cloth layer is immersed in the dipping solution as a whole A protective layer for impregnation treatment is formed; the high silica fiber expanded cloth layer and the impregnation treatment protective layer constitute a high silica fiber treatment cloth layer; the polytetrafluoroethylene microporous film layer is thermally laminated on the high silica fiber treatment cloth layer. The high-silica fiber woven film-coated filter material of the present invention has excellent characteristics such as high filtration precision, temperature resistance and corrosion resistance, high strength and low elongation, low resistance, high efficiency and long life, etc. It can efficiently capture PM2.5 dust, and achieve a dust amount of less than 5mg / Near zero emission of Nm3.

The invention belongs to the field of production processes of copper rods, and particularly relates to a method for producing a high-strength copper rod for electric railway contact net catenary wires. The method comprises the following steps: pre-heating and drying electrolytic copper in a smelting device by using the electrolytic copper with purity of 99.957 percent or above as a raw material sothat the electrolytic copper is melted, wherein the smelting device comprises a smelting furnace and a heat insulation furnace; a partition bin is arranged between the smelting furnace and the heat insulation furnace; the surface of copper liquid is coated with wood carbon and graphite flakes so that an oxygen isolation state during melting is ensured; through on-line gas removal, deoxidation andstirring, filtration is carried out through a ceramic crystallizer; and the copper rod is drawn up by adopting a traction unit in processes of drawing-up, back-pushing and stopping. The invention aims to overcome the defect of lower strength of the copper rod for the electric railway contact net catenary wires produced in the prior art and provides a production method of the high-strength copperrod for the electric railway contact net catenary wires.

A composite lubricating oil with high-temp performance, shearing stability, water-proofing nature, extreme-pressure performance and viscosity is prepared through proportionally mixing high-viscosity mineral oil with calcium sulfonate, glacial acetic acid, boric acid and calcium hydroxide, convension and saponifying reaction, adding fatty acid, high-temp (180 deg.C) reaction, cooling to 110 deg.C, adding antioxidizing agent, extreme-pressure agent and oily agent, homogenizing and filter.

The invention discloses a low-pressure steam generating device which comprises a heat exchanger and a shell.The heat exchanger is provided with a first inlet for introducing a high-temperature medium and a first outlet for discharging a condensation medium.The shell surrounds the heat exchanger and is provided with a second inlet and a low-pressure steam outlet in the top of the shell.The second inlet is used for introducing a medium easy to vaporize.The low-pressure steam generating device is high in cost performance, steam temperature is precisely controlled, it is ensured that heating steam is in a low-pressure state, and safety is ensured.

The invention discloses a hydromechanical stepless transmission device for a loading machine. The hydromechanical stepless transmission device comprises a hydraulic speed adjusting loop, a planetary division confluence mechanism, a hydromechanical fixed shaft gear transmission mechanism and a reverse gear mechanism. According to the transmission device, the planetary mechanism is adopted for converging hydraulic power and mechanical power and formed by connecting three hydromechanical sections in a division torque confluence speed power division flow, and the three hydromechanical sections are used for starting, low-speed operation and high-speed traveling correspondingly. A reverse gear comprises two hydromechanical sections. Circulating power does not exist in all the hydromechanical sections, and compared with a hydraulic force mechanical power gear shifting gearbox, the transmission device can obtain higher transmission efficiency. The sections are switched only by controlling one clutch, and smooth switching can be achieved.

The invention relates to an epoxy resin composition suitable for being adopted at low temperature. The composition comprises a polyfunctionality epoxy resin, biphenol A polyether epoxy resin, thermoplastic resin, a curing agent and an interfacial modification agent, wherein the composition is prepared from, by mass, 100 parts of polyfunctionality epoxy resin and biphenol A polyether epoxy resin, 20-40 parts of thermoplastic resin, 30-50 parts of the curing agent and 2-5 parts of the interfacial modification agent. The epoxy resin composition has the good manufacturability, the cured product has the advantage of being not likely to crack at low temperature, and the prepared carbon fiber composite material has the advantages of improving micro-crack resistance, being good in interface bonding force and the like, and is suitable for the fields of aircraft structural component manufacutirng, fuel storage tank and other military low temperature wind tunnels.