48results about How to "Conducive to full" patented technology

The invention discloses a water feeding method and device for improving the nitrogen removal efficiency of a constructed infiltration system. The method comprises the following steps: A, collection and pretreatment of original sewage: pumping the original sewage in a drainage ditch into a sedimentation tank through a control valve and a sewage pump which are connected with the sedimentation tank, and removing suspended matters and sand from the original sewage in the sedimentation tank; B, water lift: lifting the pretreated original sewage in the sedimentation tank to an elevated tank by the sewage pump; and C, deep treatment: controlling the effluent in the elevated tank by the control valve, discharging the pretreated water to a packing layer of a rapid infiltration tank, thus achieving sewage treatment. The sedimentation tank is connected with the drainage ditch through the sewage pump and the control valve on a pipeline, the sewage pump is connected with the sedimentation tank, the effluent is connected with the elevated tank through the sewage pump, the elevated tank is connected with a water inlet pipeline, the water inlet pipeline is connected with the rapid infiltration tank through the control valve on the pipeline, and a perforated water distribution pipe is connected with a water outlet pipeline. Nitrogen, phosphorus and COD (chemical oxygen demand) can be removed by the CRI (Constructed Rapid Infiltration) system. The device is simple in structure and convenient to use, and can be used for realizing efficient purification of sewage.

The invention discloses a manufacturing method for a large internal T-shaped ring forge piece blank of SB564UNS N06690 alloy. Firstly, upsetting and drawing are performed through a hydraulic forging press, a punch with the diameter of 300mm is used for punching, then chambering and rounding are performed, twice rolling is performed on a ring rolling mill by the aid of a step mold, an original blank with a rectangular section is circularly rolled into a middle blank with a step, then the middle blank is rotated by 180 degrees, and second rolling is performed, so that the internal T-shaped annular forge piece blank is obtained. According to the manufacturing method for the large internal T-shaped annular forge piece blank of the SB564UNS N06690 alloy, the structure of the manufactured forge piece blank is uniform, grains are refined, shapes are rectangular, and the forge piece quality and the production efficiency are high.

The invention discloses a method for forming an irregular section ring unit by using a high-temperature alloy rectangular section ring unit in a thermal-bulging mode. The method includes the steps that 1, a preheated die sleeve is fixed to a work table of a bulging machine, the heated high-temperature alloy rectangular section ring unit is arranged on the periphery of a preheated bulging block in the bulging machine in a sleeved mode, and the heated high-temperature alloy rectangular section ring unit is located in an annular space formed by enclosure of the outer circumference face of the bulging block and the inner ring face of the die sleeve; 2, the bulging machine is started, the ring unit can be extruded by the bulging block from the inner circumference surface of the ring unit in the radial direction and extruded into the inner ring face of the die sleeve after the ring unit deforms by 12%-15%, a closed cavity formed by enclosure of the outer circumference face of the bulging block and the inner ring face of the die sleeve is full of the ring unit, and the ring unit becomes the irregular section ring unit after pressure maintaining. According to the method, bulging forming is achieved by one-shot large deformation, operation is simplified, and the bulged irregular section ring unit which is high in size accuracy, good in product quality and high in productivity can be obtained. The irregular section ring unit is mainly applied to revolved body components and parts like cylindrical shells in the fields like aerospace.

The invention discloses a template type pipe casting-containing stainless steel water pipe fixing structure. The structure comprises a sand mold upper box, wherein a rail is arranged at the upper end of the sand mold upper box; slide blocks are arranged in the rail at intervals; a through hole is formed in the middle of each slide block; a connecting rod is connected into each through hole; one end of each connecting rod is connected in the through hole in the corresponding slide block through screw threads and extends into the upper part of the corresponding through hole; the lower end of each connecting rod is positioned at the bottom of the sand mold upper box; a screw hole is formed in the lower end of each connecting rod; a fixing screw with the diameter of 1mm binding wire penetrates through each screw hole; a clearance with the diameter of 3 to 5mm is formed between the end part of each fixing screw and the bottom end of the corresponding connecting rod; the fixing screw is used for connecting a stainless steel water pipe; a binding wire on each fixing screw is used for fixing the stainless steel water pipe; the fixed stainless steel water pipe is in a suspension state; the surrounding of the stainless steel water pipe is not in direction contact with the sand mold upper box and a clearance is reserved, otherwise, the cast steel pipe is exposed on the surface of a casting.

The invention discloses a thermal expansion forming method of a rectangular aluminum alloy section ring piece. The method comprises the steps that a preheated die sleeve is fixed to a workbench of an expanding machine, the heated rectangular aluminum alloy section ring piece is then arranged on the periphery of a preheated expanding block in the expanding machine in a sleeved mode, and is located in ring space defined by the outer circumferential surface of the expanding block and the inner ring surface of the die sleeve; the expanding machine is started to ensure that the expanding block squeezes the ring piece from the inner circumferential surface of the ring piece in the radial direction, after deforming by 11% to 12%, the ring piece enters the inner ring surface of the die sleeve in a squeezed mode, a sealed cavity defined by the outer circumferential surface of the expanding block and the inner ring surface of the die sleeve is filled with the ring piece, and the ring piece becomes an expanded rectangular section ring piece after pressure holding. Due to the adoption of once large deformation expanding forming, the method simplifies operation and the expanded rectangular section ring piece which is high in size precision, good in quality and high in production rate is acquired. The expanded rectangular section ring piece is mainly used for revolved body parts, like barrel-shaped shells, used in fields like aerospace.

The invention discloses a heat bulging forming method for stainless steel rectangular cross section annular elements. The method comprises the following steps that a preheated mold sleeve is fixed on a work table of a bulging machine, then, a heated stainless steel rectangular cross section annular element is sheathed on the periphery of a preheated bulging block in the bulging machine so that the heated stainless steel rectangular cross section annular element is positioned in an annular space surrounded by the outer circumference surface of the bulging block and the inner annular surface of the mold sleeve, the bulging machine is started so that the bulging block extrudes the annular element from the inner circumference surface of the annular element in the radial direction, deforms 10 percent to 13 percent, and is then extruded into the inner annular surface of the mold sleeve, a sealed die cavity surrounded by the outer circumference surface of the bulging block and the inner annular surface of the mold sleeve is fully filled, and the bulged rectangular cross section annular element is formed after the pressure preservation. The method adopts one-step large-deformation-quantity bulging forming, the operation is simplified, and the bulged rectangular cross section annular element with high dimension precision, high product quality and high productivity is obtained. The bulged rectangular cross section annular element is mainly used for rotating body parts of tubular casings and the like used in the fields of aeronautics and astronautics and the like.