59results about How to "Generation and elimination" patented technology

The invention discloses a high-chromium alloy wear-proof ball. Raw materials of the high-chromium alloy wear-proof ball comprise, by weight, 70-100 parts of steel scrap, 5-10 parts of ferrochromium, 1-1.5 parts of ferromolybdenum, 1-1.3 parts of ferrovanadium, 0.1-0.3 parts of ferrovanadium, 0.2-0.6 parts of ferrosilicon and 2-5 parts of zinc. The surface of the high-chromium alloy wear-proof ball high-chromium alloy wear-proof ball is processed through the high-frequency induction fusion covering technology and the electric spark deposition technology. The high-frequency induction fusion covering technology comprises the following steps that the vacuum degree is adjusted to be 50-80 Pa, high-frequency induction fusion covering equipment is turned on, the current rises from 500-550 A to 1650-1720 A within 50-80 seconds, heat preservation is carried out for 50-120 s, the current drops to 500-550 A within 30-40 seconds, the high-frequency induction fusion covering equipment is turned off, and cooling is carried out. The electric spark deposition technical parameters comprise the hydrogen flow of 3-7 m<3> / h, the deposition voltage of 150-200V, the deposition frequency of 1450-1560 Hz, the deposition power of 2000-2500 W, the deposition time of 5-6 min / cm<2> and the revolving speed of a rotary deposition gun of 1800-2200 r / min. The high-chromium alloy wear-proof ball is excellent in impact strength, rigidity, heat resistance and wear resistance.

The invention discloses a textile printing and dyeing wastewater treatment device and technology. The technology comprises the following steps: a first intake pump is used to pump wastewater into the bottom of a biological creeping bed, wastewater passes through a first biological haydite layer from bottom to top, the top effluent enters in a sedimentation and filtration ditch to precipitate, a second intake pump is used to pump the upper clear water into the ozone reaction area on the bottom of an ozone-aeration biological filter while 50-75mg / L of ozone is injected, then the reacted water passes through a second biological haydite layer from bottom to top, the clean water overflowing from the top enters a clear water reservoir, the clear water in the clear water reservoir is sent to the outside for emission or for advanced treatment and reuse. The invention has the advantages that the adhesion of microorganism in the system is good, the aeration rate is enough and enough biological concentration can be maintained, thus the volume load is increased, the sludge load is reduced, the amount of sludge can be obviously reduced; and as ozone is used to remove organics which are difficult to degrade, the entire technology is under the aerobic environment, sulfides generated in the anaerobe treatment process can be avoided and physical and chemical sludge generated in the coagulating sedimentation process can be eliminated.

The invention provides a dust-eliminating grinding machine and belongs to the technical field of machining. A grinding machine motor is fixedly connected with a machine seat. Two wind wheel shells are symmetrically arranged on a main shaft of the grinding machine motor in a sleeved manner. A coaxial adjusting rod is installed between the two wind wheel shells. After the gap between each wind wheel shell and the main shaft of the grinding machine motor is adjusted, the wind wheel shells are fixed to the machine seat with bolts. Wind wheels are installed in the wind wheel shells. The wind wheels are fixed to the main shaft of the grinding machine motor through screws. Second safety covers are installed on the outer sides of the wind wheels. The upper edge of an opening of each second safety cover is adjusted to form an angle of 15 degrees with the horizontal plane, and the second safety covers are fixed through screws. Abrasive disks are installed in the second safety covers, and the abrasive disks are fastened to the main shaft of the grinding machine motor. First safety covers are installed on the outer sides of the abrasive disks. The upper edge of the opening of each first safety cover is adjusted to be at the same angle with the second safety covers, and the first safety covers are fixed with screws. One end of a dust guide pipe is inserted into a mouth of an air outlet pipe of each wind wheel shell, and the other end of each dust guide pipe is inserted into a dust collecting water tank. An appropriate amount of water is added to the dust collecting water tank, and the dust collecting water tank is placed in a cavity of the machine seat.