36results about How to "Lower working conditions" patented technology

A continuous vertical reaction furnace for producing carbon nanotubes with pre-set catalysts, including a heating furnace, a reaction chamber, a collection chamber, a carbon nanotube growth plate, a growth plate support column, a growth plate push rod, a pneumatic push rod valve, etc., the reaction chamber Located in the heating furnace, the carbon nanotube growth plate is located in the middle of the reaction chamber; the carbon nanotube growth plate is hinged to the growth plate support column, and the growth plate support column is vertically fixed at the center of the bottom plate of the collection chamber; one end of the growth plate movement push rod is connected to the carbon The nanotube growth plate is hinged, and the other end is hinged with a pneumatic push rod valve. The invention can realize non-interrupted production of carbon nanotubes, and can effectively and fully exert the catalytic efficiency of the catalyst in the process of depositing carbon nanotubes. By utilizing the exhaust gas of deposited carbon nanotubes, the energy consumption per unit weight of carbon nanotubes can be reduced, the production cost of carbon nanotubes can be reduced, and the equipment structure is simpler.

The invention discloses a spectral lamp for a rubidium atomic frequency standard. A sapphire glass sheet is adhered into a glass sheet clamping opening in the top of a lamp base cover through silicone rubber. A coupling coil is closely wound on the upper part of a bulb. One end of the coupling coil is welded with a core wire of a coaxial wire, and the other end of the coupling coil is welded with the outer wall of the coaxial wire. The coaxial wire penetrates through the lamp base cover, a transition circuit board, a shielding box and a radio frequency circuit board, and is welded at the ground ends of the transition circuit board and the radio frequency circuit board. The lamp base cover is fixedly arranged on the transition circuit board through screws. Leading wires of a heating coil and a temperature sensing element are welded on the transition circuit board. The lamp base cover is fixedly arranged on the transition circuit board through the screws at the bottom of the lamp base cover. The transition circuit board is fixedly arranged on a lamp bracket through screws. The lamp bracket is fixedly arranged on the shielding box through screws. The radio frequency circuit board is fixedly arranged in the shielding box through screws. The spectral lamp is simple in structure, easy to machine, stable in performance and high in environmental adaptability, and can be directly applied to the rubidium atomic frequency standard.

The invention discloses a method for preparing an acid-process cold box resin for casting and its application. The invention belongs to the technical field of casting materials. The cold box resin for casting prepared by the preparation method disclosed in the invention has high production efficiency and energy saving , the sand core has high dimensional accuracy, low gas generation, long life of the core box, small deformation, smooth surface of the casting, high dimensional accuracy and small gas generation, non-toxic and tasteless, and has unique high temperature characteristics. The sand core made of cold box resin is It has secondary hardening characteristics when pouring at high temperature. It adopts acid curing gas source, such as acetic acid, oxalic acid, etc., and it is naturally decomposed, non-toxic and harmless, so it can prevent castings from defects such as hot cracks and burrs. Cold box resin no-bake sand has relatively low Low gas generation and good collapsibility.

The invention provides high-strength low-temperature-resistant steel. The steel is composed of, by mass, 2.0-7.05% of nickel, 0.02-0.1% of carbon, 0.02-0.1% of silicon, 0.60-8.00% of manganese, 0.3-0.5% of chrome, 0.05-0.6% of molybdenum, 0.02-0.3% of copper, 0.03-2.0% of aluminum, smaller than or equal to 0.010% of phosphorus, smaller than or equal to 0.002% of sulfur, 0.004-0.010% of nitrogen, 0.0005-0.002% of oxygen, 0.0005-0.005% of calcium, and the balance iron. The invention further provides the heat processing technology and application of the high-strength low-temperature-resistant steel. By the adoption of the high-strength low-temperature-resistant steel and the heat processing technology thereof, low-temperature toughness is high, structural steel used in a low-temperature environment can be manufactured, application cost is reduced, and economical applicability is high.

The invention belongs to the technical field of nicotinic acid extraction, and particularly relates to a method for extracting nicotinic acid from beef tripe. The method includes the following steps:microwave treatment, high-voltage pulsed electric field treatment, and supercritical carbon dioxide extraction. The method provided by the invention has the characteristics of a high extraction rate,short extraction time, stable product quality and few process steps, avoids the use of expensive equipment and the use of nanofiltration and ultrafiltration membranes, and has low separation requirements.

This invention discloses a kind of electric four-way change valve used in air-condition air flow reversing. The valve is consisted main by a valve body, a motor, a ceramic valve core. The core has a kinetic block and a static block. The static block has high voltage interface and low voltage interface that connected to the compressor, in-house interface that connected to in-house coil pipe interface, outdoor interface that connected to outdoor coil pipe interface. The motor is driven by the motor; it has a high voltage slot and a low voltage slot. The high voltage interface is connected to the high voltage slot correspondently; the low voltage interface is connected to the low voltage slot correspondently. The in-house pipe interface and the outdoor pipe interface are connected to the high voltage slot and low voltage slot, and the in-house pipe interface and the outdoor pipe interface will change their relation to the high voltage slot and low voltage slot on the movement of the kinetic block. This invention is no leaking, and it doesn't dirty plug, oil plug, and ice plug. The reversing is stable, and the versatility is good, the range of endurance of temperature is wide. It doesn't need cooling system when install anti.