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78results about How to "Work efficiently" patented technology

Clogging determining device for reducing agent passage and clogging determining method for reducing agent passage

There are provided a clogging determining device for a reducing agent passage and a clogging determining method for a reducing agent passage, which can accurately detect clogging and estimate a clogged place when clogging occurs in any place of a supply line or a return line.
The device includes pump driving control means for subjecting the pump to DUTY control so that a pressure value is kept to a predetermined value, driving DUTY determining means for determining whether the driving DUTY of the pump is less than a predetermined threshold value corresponding to the opening degree of the reducing agent injection valve, or not; pressure reduction amount calculating means for calculating a pressure reduction amount by which the pressure value detected by the pressure sensor is reduced within a predetermined time after the pump is stopped and the reducing agent injection valve is fully opened when it is determined that the driving DUTY of the pump is less than the threshold value, and clogging determining means for determining on the basis of the pressure reduction amount calculated by the pressure reduction amount: calculating means whether clogging occurs in the first reducing agent passage or the second reducing agent passage.
Owner:BOSCH CORP

Drilling device for earthen archaeological site

The invention discloses a drilling device for an earthen archaeological site. The drilling device is characterized in that a bottom plate is mounted on the upper surface of a slideway through two groups of bottom plate rollers; a pair of round guide rails is fixed on the bottom plate, and a motor mounting plate is mounted on the round guide rails through sliders; a gear motor is fixed on the motor mounting plate; a rotating connector is mounted on an output shaft of the gear motor in a sleeving manner; one end of a connecting sleeve is fixedly connected with the rotating connector through a flange, and the other end of the connecting sleeve is in sleeve joint with one end of a drill rod through threads; the other end of the drill rod is connected with a drill; and the drilling rod, the round guide rails and the slideway are parallel. According to the drilling device for the earthen archaeological site, when a drill tube penetrates into the earthen archaeological site continuously, a drill rod jacket arranged on the drill rod in a sleeving manner goes deep into earth mass with the drill rod and is supported on the earth mass through a drill rod support frame, further, the drill rod jacket can move forwards continuously with the drill rod, so that the drill rod is prevented from shaking in a drilling process, the drilling accuracy is guaranteed, safety and reliability are achieved, and the drilling device has the characteristics of convenience, fastness and high work efficiency.
Owner:SHAANXI NORMAL UNIV

Automatic hub casting device and method

The invention discloses an automatic hub casting device and method. The automatic hub casting device comprises walking wheels, a lifting motor, a walking motor, a framework, an upper rotary disc, a lower rotary disc, a steering motor, a casting ladle, a casting motor, a lifting lug, a lifting steel wire rope, lower hanging rings, speed measuring sensors and an electronic scale. The walking wheels are installed on the framework. The walking motor and the framework are installed in a matched mode. The steering motor is installed at the upper portion of the upper rotary disc. The electronic scale and the casting motor are fixedly connected with the lower rotary disc through the lower hanging rings. The lifting motor is installed at the lower portion of the electronic scale. The lifting lug is located on the casting ladle and hinged to a hanging bracket. The hanging bracket is connected with the lifting motor through the lifting steel wire rope. The walking motor, the lifting motor, the steering motor and the casing motor are respectively provided with one speed measuring sensor. The automatic hub casting method includes the manual data collection stage, the data correction stage, the data storage stage and the data repeated operation stage. According to the automatic hub casting device and method, the degree of automation of casting is improved, labor is saved, and operation efficiency is improved.
Owner:吉林万丰奥威汽轮有限公司

Electrical heating method and circuit of electronic device at low temperature

The invention discloses an electrical heating method of an electronic device at a low temperature, which is used for carrying out low-temperature heating and temperature rise control on the electronic device, and implemented by using a low-temperature area acquisition circuit, a reference comparison circuit, an amplifying circuit and a heating control circuit; a low temperature change acquisition circuit is a bridge circuit, each bridge arm is provided with a resistor, and the resistor of one bridge arm is a thermistor; the temperature changes are transferred into bridge voltage difference value changes; a comparator circuit carries out comparison on voltage difference values VA and VB output by the bridge circuit, and outputs the comparison result to a voltage comparator; the comparator circuit is provided with a hysteresis current control circuit for carrying out hysteresis current control on an unsteady state implemented by that output values jump back and forth near a temperature starting control point value, and when the resistance value is changed to a starting control point value R1 and slightly larger than the R1, a situation that the output jumps occurs; when the resistance value is changed and less than the starting control point value R1, the output is still unchanged; and once the resistance value continues to be reduced to a certain value R2 and the R2 is less than the R1, a situation that the output jumps occurs.
Owner:NANJING PANDA HANDA TECH +3

Residential area comprehensive security intelligent monitoring system on basis of internet-of-things technologies

The invention discloses a residential area comprehensive security intelligent monitoring system on the basis of internet-of-things technologies. The residential area comprehensive security intelligentmonitoring system comprises acquisition equipment and a monitoring cloud platform. The acquisition equipment is connected with the monitoring cloud platform by a wireless communication terminal and comprises monitoring equipment, an audible and visual alarm, a fire sensor, an infrared sensor, a voice communication module and an access control monitoring system, the monitoring equipment, the audible and visual alarm, the fire sensor, the infrared sensor, the voice communication module and the access control monitoring system are sequentially connected with one another, the monitoring cloud platform comprises a region terminal, a comprehensive supervisory platform, a rescue module and a remote notification unit, and the region terminal, the comprehensive supervisory platform, the rescue module and the remote notification unit are sequentially connected with one another; the region terminal comprises an RFID (radiofrequency) reading module, a basic information matching module and a headportrait matching module, and the RFID reading module, the basic information matching module and the head portrait matching module are sequentially connected with one another. The residential area comprehensive security intelligent monitoring system has the advantages that the residential area comprehensive security intelligent monitoring system has all-weather, real-time and remote monitoring functions; the residential area comprehensive security intelligent monitoring system is free of influence of conditions such as monitoring environments and the weather, satellite positioning technologies, the internet-of-things technologies and the like are applied, inspection work can be intelligentized and networked, accordingly, efficient work and effective supervision can be carried out, and theresidential area comprehensive security intelligent monitoring system is high in intelligence and humanization.
Owner:合肥极光科技股份有限公司

High-efficiency biofertilizer granulating machine

The invention discloses a high-efficiency biofertilizer granulating machine. The high-efficiency biofertilizer granulating machine comprises a pedestal, roller wheels, a supporting rod and a support,wherein the support, a granulating machine body and the supporting rod are arranged at the top end of the pedestal; the granulating machine body is positioned between the support and the supporting rod; a housing cover is fixed to the top end of the support; a feed box, a motor and a baffle plate are arranged at the top end of the housing cover; the motor is positioned between the feed box and thebaffle plate; a bolt groove is formed in the right end of the housing cover; a bolt head is connected inside the bolt groove; the bolt head is positioned on a discharging cover; a hydraulic cylinderis mounted on the left side of the housing cover, and the hydraulic cylinder runs through the left side of the housing cover; and an extruding block is fixed to the right end of the hydraulic cylinder. Straw is firstly crushed in a crusher, the crushed straw is moulded through extruding by the extruding block, and a material with the required granule size is obtained through moulding holes so as to achieve high-efficiency working of the granulating machine. The high-efficiency biofertilizer granulating machine is relatively practical and is suitable for wide popularization and application.
Owner:河南惠农土质保育研发有限公司

Environment-friendly dual-circulation air conditioner

The invention discloses an environment-friendly dual-circulation air conditioner which comprises an indoor circulation system and an outdoor circulation system, wherein the indoor circulation system is in pipe communication with an evaporator in the outdoor circulation system through a temperature preservation water pipe; the evaporator is internally provided with medium liquid; the outdoor circulation system is also provided with an air condenser, a water condensing tank and a compression pump; the air condenser, the water condensing tank and the compression pump are sequentially communicated with the evaporator through a welding pipeline so as to form a sealed circulation pipeline which guarantees that an internal refrigerant does not leak. The environment-friendly dual-circulation air conditioner provided by the invention has the beneficial effects that the indoor circulation system and the outdoor circulation system are separately completely, and the refrigerating and heating dual-purpose effect is achieved, so that the refrigerant operates in the outdoor circulation system and does not enter indoors, and thus a true fluoride-free environment-friendly efficient refrigerant can be used safely, and the selection range of the refrigerant is extended.
Owner:谢育稳

Scroll compressor wide area self-adaptation system

The invention relates to a scroll compressor wide area self-adaptation system. The scroll compressor wide area self-adaptation system comprises a circulation main path composed of a compressor, a condenser, an expansion valve and an evaporator. A medium-pressure hole is formed in a middle pressure cavity of a static scroll plate of the compressor. A subcooler is arranged behind the condenser, outlets of the subcooler are divided into three paths, the path A and the expansion valve are connected to the circulation main path, the path B is connected to the medium-pressure hole of the compressorthrough a valve I, the path C is a branch path formed on the part, behind the subcooler and at the front end of the expansion valve, of the circulation main path and is connected with a valve II, andthe other end of the valve II is connected to the medium-pressure hole of the compressor. The medium-pressure hole of the compressor is further connected with a hot gas bypass, and the hot gas bypassis provided with a valve III. The three valves are all connected with a controller. The medium-pressure hole is formed in the middle pressure cavity of the static scroll plate, and gas-state refrigerant spraying, liquid-state refrigerant spraying and gas-liquid mixed state refrigerant spraying or medium pressure refrigerant discharging can be achieved through the medium-pressure hole. The system can efficiently work in the broad area.
Owner:DALIAN UNIVERSITY
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