32results about How to "Keep the structure" patented technology

The invention discloses an inner and outer dustproof oil seal structure. The inner and outer dustproof oil seal structure is of an annular integrated structure, and comprises an outer framework, an inner framework, a main lip, a spring, an external auxiliary lip and an internal auxiliary lip; the internal auxiliary lip comprises a body and a first protruding portion; and the first protruding portion is obliquely raised on the body and faces the oil side. The main lip plays an oil sealing role, the external auxiliary lip plays a role in isolating external foreign matters, and the internal auxiliary lip plays a role in isolating internal foreign matters. Therefore, the problem of damage caused by contact of the main lip and impurities in the box body in the prior art is solved, and double dust prevention is realized on the oil seal structure. Meanwhile, the existing structure of the box body is kept unchanged to the maximum extent, the installation process is not changed, and the cost issaved. Furthermore, the inner and outer dustproof oil seal structure adopts a generalized design and is wide in application range.

The invention discloses a HEMT-based annular opening terahertz amplitude modulator and a manufacturing method thereof. Electrodes; the modulation array is composed of M×N modulation array elements arranged periodically, the modulation array element is composed of 4 open circular structural units, and the opening of the structural unit is matched with a high electron mobility transistor, the high electron mobility transistor The gate of the gate is connected to the Schottky electrode through the gate feeder and then connected to the negative electrode of the power supply. The source and drain of the high electron mobility transistor are respectively connected to both sides of the opening of the structural unit, and the structural unit is connected to the ohmic electrode through the source-drain feeder. Positive power supply. The supersurface resonant mode is converted by controlling the high electron mobility transistor with an external bias voltage, and the fast amplitude modulation of the terahertz wave propagating in free space is realized, and the different modes of the structural unit are mutually converted to achieve the modulation of multiple frequency points.

The invention relates to a method for quickly eliminating waste materials and remaining iron in a furnace during blast furnace overhaul. The method is a quickly eliminating method for mechanically detaching waste materials and carbon bricks in a furnace on the premise that a blast furnace shell is locally changed, particularly for mechanically detaching and cleaning furnace materials and carbon brick refractory materials on the premise that the blast furnace shell is locally changed, and moreover synchronously knocking and crushing remaining iron clots in the furnace by means of detaching and falling of the upper cooling wall, and removing both remaining iron clots and waste materials out of the furnace by virtue of a grab excavator. The method has the characteristics of use of few labors, high detaching speed, convenience in operation, quick construction, safe construction and the like, and can be used for increasing the speed for cleaning waste materials in the furnace in the process of blast furnace overhaul. Compared with traditional manual detaching and cleaning mode, the method has the advantages that the speed for cleaning waste materials and remaining iron in the furnace during blast furnace overhaul can be increased and the safety factor of the process of constructing in the blast furnace can be improved.