33results about How to "Prolong the elapsed time" patented technology

The present invention aims to provide a liquid chromatograph, an analysis system, and a gradient elution method, which are designed to permit a gradient change of eluent with higher precision and also permit a high sensitive detection or analysis. For attaining the object, there are provided: a liquid chromatograph having at least a liquid-feeding means 1 for flowing an eluent E at a predetermined flow rate, a sample-pouring means 9 for pouring a sample Sm into the eluent E, and a separation-column means 13 for separating a solute So contained in the sample Sm into components, comprising an eluent-selecting means 8 for forming branched flow paths 7 having predetermined volumes by dividing a flow path 3 of the eluent E fed from the liquid-feeding means 1, temporally storing eluents E₁, E₂, and soon in the branched flow paths 7, and pouring the sample Sm into the selected eluents E₁, E₂, and so on, and means for carrying out a gradient elution of a solute So; an analysis system comprising a mass spectrometer connected to the liquid chromatograph, and a gradient-elution method using the liquid chromatograph.

Embodiments of the invention provide a disk device and a method of controlling the device which is capable of suppressing peak current, even for serial communication, that is required when initiating rotation of a spindle motor down to a level equivalent to that of parallel communication, without prolonging elapsed time before reaching the steady rotation speed. In one embodiment, an HDD includes a serial communication circuit which executes serial communication with a host, an SPM which rotates a disk, an HDC/MPU which controls the SPM and the serial communication circuit. The HDC/MPU, after shutting down the serial communication circuit once, starts up the serial communication circuit again when rotation speed of the SPM reached the specified standard value, and establishes serial communication with the host by means of the serial communication circuit.

Provided is a powder magnetic core for a reactor, whose electromagnetic properties are difficult to change with time, even when applied to a reactor used in a state that the core is exposed without being potted. The powder magnetic core for a reactor consists essentially of a compact composed of an insulation-coated iron-based soft magnetic powder that an insulating film is formed on the surface of an iron-based soft magnetic powder, and which has such a change with time of 500 hours at 180° C. that a ratio of decrease in effective magnetic permeability being 1% or less. In the compact, the content of gapping between two adjacent particles of the insulation-coated iron-based soft magnetic powder is 2 vol % or less.

The invention relates to a spray dust collector which consists of a dust collecting chamber, a roller, a nylon brush, a guide rod A, a guide rod B, a steam jet, a linear, a stainless steel filter net, a damper, a vent and an exhaust pipe. The spray dust collector is characterized in that the steam jet is arranged at the inlet of the dust collecting chamber; the guide rod A and the guide rod B are respectively arranged above and below the inlet of the dust collecting chamber; the guide rod B and the dust collecting chamber are encircled into the exhaust pipe; the nylon brush is arranged on the excircle of the roller; the guide rod A contacts with the nylon brush; the dust collecting chamber consists of a condensing zone and a drainage zone; the condensing zone adopts a round involute structure; the drainage zone adopts a fermat spiral structure; the linear is arranged on the inner wall of the drainage zone; the air port is arranged at the top of the drainage zone; the stainless steel filter net is arranged on the linear at the position corresponding to the vent; the damper is arranged on the linear behind the stainless steel filter net in the airstream direction, and the steam jet jets by using ultrasonic waves. The spray dust collector has the advantages of low work noise, good dust collecting effect and the like.

The invention discloses a circular cooling device for an EPS forming machine, and relates to the technical field of EPS forming machines. Multiple water driving mechanisms are mounted on the inner wall of the upper side of a drying room; axial flow fans are mounted at output ends of the water driving mechanisms; a turbine impeller converts the flowing potential energy of hot water to mechanical energy of self rotation, so that more heat can be dissipated into the drying room in the process, the temperature in the drying room is increased, and EPS foamed models in the drying room are dried; multiple annular bodies are fixedly inserted in an external cavity, so that air formed by the axial flow fans is blown to the EPS foamed models in the drying room after penetrating through the annular bodies, and the drying effect of the EPS foamed models is improved; and as the heat of the hot water is quickly dissipated, cooling water is injected into a water storage tank again through a reflux pipe after heat dissipation, and the cooling water in the water storage tank is injected into a foaming molding machine for cooling the foaming molding machine to enable the hot water and the cooling water to form a circulation.

The invention discloses a flame-retardant type anti-explosion valve of a crankcase. The flame-retardant type anti-explosion valve of a crankcase comprises a valve deck and a valve seat. A valve clackis arranged on the valve seat. An inner flame-retardant ring group, an outer flame-retardant ring and a spring are arranged between the valve deck and the valve seat. The upper end of the spring is fixed to the valve deck. The lower end of the spring tightly presses the valve clack. The inner flame-retardant ring group and the outer flame-retardant ring are arranged in the space formed by the valve deck and the valve seat to form a flame retardant device. Because the flame-retardant type anti-explosion valve of a crankcase is adopted, the airflow through holes of the valve are evenly distributed along the surfaces of ring bodies, the airflow through holes of the same ring body are evenly arranged side by side, the airflow through holes of two adjacent ring bodies stagger to form labyrinthtype bend channels, the time for airflow and flames to pass through can be effectively prolonged while heat exchange between airflow and the inner walls of the flame retardant rings can be sufficient,the use ratio of the flame retardant rings is increased to the maximum degree, the temperature is lowered, and the purposes of reducing pressure and putting out flames are achieved finally. The flame-retardant type anti-explosion valve of a crankcase is simple in structure, and easy to produce and install. The problems exist in an anti-explosion valve can be solved. The flame-retardant type anti-explosion valve of a crankcase has broad application prospects.

The invention discloses novel wet type dust-removing equipment. The novel wet type dust-removing equipment comprises a tower body with a cylindrical structure; a gas inlet is formed in the side wall of the tower body and a gas outlet is formed in the upper end of the tower body; a water storage device, a spraying device, a water mist-removing filling layer and a dehydrating layer are arranged in the tower body from bottom to top in sequence; the gas inlet is positioned between the water storage device and the spraying device; the dehydrating layer is positioned below the gas outlet; the novel wet type dust-removing equipment also comprises a fan and a buffer box; a gas inlet of the fan is communicated with the gas outlet of the tower body; a gas outlet of the fan is communicated with a gas inlet of the buffer box; a gas outlet of the buffer box is externally connected with a gas discharge pipeline. According to the novel wet type dust-removing equipment, the dust-removing rate reaches 98 percent or above and accords with atmospheric comprehensive discharge standard; in addition, the liquid amount of the discharged gas can be reduced, the dehydrating effect of waste gas is improved, equipment operating power is reduced and equipment operating cost is reduced.

The invention provides efficient Hastelloy alloy star-shaped heat exchange equipment, and relates to the technical field of heat exchange equipment, the efficient Hastelloy alloy star-shaped heat exchange equipment comprises a heat exchanger shell and heat exchange assemblies, the heat exchange assemblies are arranged in the heat exchanger shell, and a plurality of groups of heat exchange assemblies are arranged in the height direction of the heat exchanger shell at equal intervals; the heat exchange assembly comprises a heat exchange pipe and star-shaped cooling fins, and the star-shaped cooling fins are arranged in the heat exchange pipe. Chemical tail gas is introduced through the gas inlet pipe, so that the chemical tail gas enters the heat exchange assembly, a liquid refrigerant is introduced through the refrigerant inlet so as to exchange heat with the chemical tail gas passing through the interior of the heat exchange assembly, and the star-shaped cooling fins are arranged, so that the heat exchange area is increased, and heat conduction is assisted; the heat exchange effect of the chemical tail gas and the liquid refrigerant in the heat exchange pipe is better, the chemical tail gas is promoted to be cooled and turned into organic solvent liquid with strong acidity and harmless gas to be discharged, organic matter and acidic matter in the chemical tail gas can be effectively recycled, and pollution to the environment is reduced.

The invention relates to an efficient all-weather air temperature vaporizer. The efficient all-weather air temperature vaporizer comprises spiral multiplies arranged in a finned tube in the axis direction, so that spiral flow guide channels are formed in the finned tube, low-temperature mediums spirally flow along the multipliers, and the positions of the low-temperature mediums in the center of the finned tube and the positions of the low-temperature mediums around the inner wall of the finned tube are continuously and alternately changed. The heat exchange of the low-temperature mediums is more uniform, the flowing time in the finned tube is longer, the vaporization efficiency is high, the environmental temperature is utilized to the maximum extent, and energy conservation and environmental protection are realized; meanwhile, electric heating rods penetrating through the multipliers are arranged in the finned tube to directly heat and vaporize the low-temperature mediums, heat is transmitted to the multipliers and the finned tube to further heat and vaporize the low-temperature mediums flowing through the multipliers, heat generated by the electric heating rods is completely sealed in the finned tube, no loss is caused, and vaporization efficiency is extremely high; and finally, the temperature of output gas can be controlled according to needs, the use is more flexible, andthe universality is high.

The invention discloses a mist catcher capable of being conveniently cleaned. The mist catcher comprises a filtering bush, wherein a bottom connecting plate is fixed at the bottom end of the filteringbush, a gas inlet through hole is formed in the middle of the bottom connecting plate, a vertical guide bush is fixed in the middle of the top surface of the bottom connecting plate, and is communicated to the gas inlet through hole, an upper cover plate is fixed to the top end of the vertical guide bush, and covers the top of the vertical guide bush, an upper sleeve body is fixed to the bottom surface of the edge of the upper cover plate, the vertical guide bush is inserted and sleeved into the upper sleeve body, an outer sleeve body is fixed to the edge of the top surface of the bottom connecting plate, and the upper sleeve body is inserted and sleeved into the outer sleeve body. According to the invention, with the mist catcher, the flowing time of the oil liquid mist in the filteringbush can be prolonged, so that the oil liquid mixed in the filtering bush can be remained in the filtering bush and finally drips down from the filtering bush, the filtering effect is good, and the efficiency is high.

The invention relates to an anti-overheating structure, a water heater and a control method thereof, and a computer readable storage medium. A water passing member of the anti-overheating structure can perform heat dissipation and is provided with a water flowing passage; the water flowing passage comprises a first water flowing section, a throttling section and a second water flowing section which are in sequential communication; a first heat dissipation member is attached to the outer wall of the water passing member and is used for absorbing heat on the surface of the water passing member in a heat conduction manner; and a second heat dissipation member is used for receiving a driving instruction, generating an airflow based on the driving instruction, and dissipating heat on the surface of the first heat dissipation member in a thermal convection manner. When the number of water consumption points is increased, the second heat dissipation member receives the driving instruction togenerate the airflow based on the driving instruction and dissipates the heat on the surface of the first heat dissipation member in the thermal hot convection manner, and the temperature of water flowing through the water passing member can be appropriately reduced through the matching with the first heat dissipating member; and the water flowing passage is provided with the throttling section, so that the flowing time of hot water in the water passing member is prolonged, the temperature of the water flowing through the water passing member can be effectively reduced, and the water outlet temperature of the water heater can be prevented from being too high.

The invention provides a heat pump drying device comprising a heat pump circulation system and a drying chamber. The heat pump circulation system is provided with a first air outlet and a first air inlet. The drying chamber is provided with a second air inlet and a second air outlet. The first air outlet is connected with the second air inlet. The first air inlet is connected with the second air outlet. The drying chamber comprises a drying chamber shell. The drying chamber shell comprises an upper shell and a lower shell which are mutually independent. The upper shell and the lower shell areboth internally hollow. The upper shell is arranged on the upper side of the lower shell. The upper end of the left side of the upper shell is provided with the second air inlet, and thus the upper shell and the lower shell communicate with each other. The heat pump drying device provided by the invention can meet drying process requirements of modern agriculture scale production and various agricultural products, and the drying device can operate efficiently and safely under different climatic conditions and can provide a good drying effect.