161results about How to "Play the role of drainage" patented technology

The invention discloses a low-blood-loss micro axial-flow type artificial heart which comprises a vane wheel, a motor rotor, and a motor stator, wherein the vane wheel is arranged inside the motor rotor in an interference fit and coaxial mode, the vane wheel is placed between an entry guide vane and an exit guide vane, two flow-guiding cones with large ends of 3mm are respectively arranged on an inlet end of the entry guide vane and an outlet end of the exit guide vane, the conical degree of the flow-guide cone is 90 degrees, and the two flow-guiding cones are in symmetrical arrangement. The helical angle of each flow-guiding vane on the entry guide vane gradually reduces from 90 degrees to 30 degrees along the axial direction from the inlet end to the outlet end, and the helical angle of each flow-guiding vane on the exit guide vane 3 gradually increases from 30 degrees to 90 degrees along the axial direction from the inlet end to the outlet end. The vanes on the vane wheel and all the flow-guiding vanes are in the shape of a logarithm helical line. Shaftless drive of the vane wheel reduces thrombus risk, and the micro structure improves the ability to implant. The low-blood-loss micro axial-flow type artificial heart has the advantages of being low in hemolysis, strong in implanting ability, simple in structure, high in reliability and the like.

The invention discloses an L-shaped concrete retaining wall comprising a body part and a tenon-and-mortise part. The body part comprises a base plate, a main rib plate, a vertical plate and two side rib plates. The vertical plate, the main rib plate and the side rib plates are arranged on the base plate. The main rib plate is located in the middle of the upper surface of the base plate. The two rib plates are located on the left side and the right side of the main rib plate. The outer side face of each side rib plate coincides with the left side face and the right side face of the base plate.The vertical plate is provided with four water seepage holes. Each side rib plate is provided with a water seepage hole. The tenon-and-mortise part comprises a first tenon, a first mortise, a second tenon and a second mortise. The L-shaped concrete retaining wall achieves modularized prefabrication, concrete and a steel reinforcement framework are formed in a mold in an integrated manner, and connection between the steel reinforcement framework and the concrete is more stable through arranged reinforcing steel bar headings. The water seepage holes are arranged on the vertical plate and the side rib plates and achieve the water seepage function. Due to the tenon-and-mortise design, after construction, multiple concrete retaining walls can be more easily matched, and the stability is higher.

The invention provides an intelligent seawater concentration control method of a circulating spraying heat exchange system. The system comprises a tank body, a circulating spraying pump, spray heads and a circulating pipeline arranged in the tank body, and the spray heads are arranged at the upper part of an evaporator; the circulating spraying pump pumps seawater into the spray heads, and then the seawater is sprayed to the evaporator; a seawater concentration detector is arranged in the tank body, and is used for detecting the concentration of seawater, and a controller automatically controls seawater drainage according to the detected seawater concentration; and if the measured seawater concentration exceeds a certain value, the controller controls the circulating spraying pump to stopworking, a wastewater outlet at the lower part of the tank body is opened, and strong brine is discharged from the wastewater outlet. The intelligent seawater concentration control method can realizeintelligent control of the drainage and inflow of the seawater, so the seawater is converted into freshwater to the maximum extent, and the maximum utilization effect is achieved.

The invention discloses an integral construction method for a constructional column and a main body structure. The integral construction method comprises the steps that (1) constructional-column overlapping steel bars are pre-buried in a preset position for casting the constructional column; (2) the lower end of a constructional-column steel reinforcement cage is bound together with the pre-buried overlapping steel bars, and the upper end of the constructional-column steel reinforcement cage is bound together with a main-body-structure steel reinforcement cage; (3) a constructional-column casting formwork of the constructional column is constructed, a main-body-structure formwork casting formwork of the main body structure is constructed, a constructional-column casting through-hole is formed in the bottom of a main-body-structure formwork, and formworks on the two sides of the constructional column are U-shaped-structure formworks; and (4) the constructional column is cast firstly, then the main body structure is cast, in the casting construction of the constructional column, an air exhaust pipeline is inserted into the constructional-column casting through-hole, and a separant is spread on the outer side of the air exhaust pipeline in a brushing mode. According to the integral construction method for the constructional column and the main body structure, a construction technology that the constructional column is cast firstly, then the main body structure is cast, and finally brickwork is constructed is adopted, and through the construction technology, the casting period of the constructional column can be effectively shortened, and the construction difficulty is reduced.

The invention discloses a technique method of building a refractory lining dual-chute of a dry quenching furnace, and belongs to the building construction field of metallurgical equipment. The technique method is mainly used for solving the problems that the construction difficulty of the refractory lining dual-chute of the dry quenching furnace is big, and the dimension accuracy is hard to control. The technique method includes the first step, selecting proper refractory bricks and pre-practicing mating objects according to equipment requirement; the second step, manufacturing standard fixtures with corresponding dimensions; the third step, confirming position of every supporting wall by a tool; the fourth step, timely detecting bias of corresponding dimension and making adjustment during the building process according to corresponding reference line. Specific to bracket brick expansion or rupture of a single-chute bracket supporting wall in the prior art, the technique method reduces the safety problem of the dry quenching production; the method applies a technique of 'pre-practicing for many times and selecting bricks to form a complete set' and a control method of 'measuring every brick while adjusting every layer', so that the supporting wall stability of a chute zone is improved, and the service life of the dry quenching furnace is prolonged.

The invention discloses a distribution box rain-shading anti-thunder device easy to mount. The device includes distribution box main body, the top of the distribution box main body is provided with anupper rain shade, a lower side of the upper rain shade is provided with a lower rain shade, an inner side of the lower rain shade is provided with a plurality of first insulating support rods connected with and fixed to the top of the distribution box main body, the top of the distribution box main body is provided with a current-conducting plate in the lower rain shade, an outer side of the current-conducting plate is equipped with a plurality of conductive balls in a circumferential direction, the conductive balls are equipped with lightning protection poles with upper ends inclined towardsouter sides, the lightning protection poles penetrate through the upper rain shade, outer sides of the lightning protection poles are also provided with second insulating support rods. The distribution box rain-shading anti-thunder device easy to mount is novel in structure, is applicable to a distribution box, has good rain-shading and anti-thunder effects, and thus facilitates popularization.

The invention relates to an energy-saving thermal-insulation interior and exterior wall coating preparation system and a preparation process. The energy-saving thermal-insulation interior and exteriorwall coating preparation system comprises a fixed base, a mounting roller and a filtering device; the mounting roller is mounted at the upper end of the fixed base, and the filtering device is arranged in the mounting roller. The system can solve the problems that a traditional paint filtering device is too single in structure during filtering; generally, only a single filter screen is used for filtering; consequently, the filtering effect is not ideal enough, moreover, the filtering efficiency is not high, part of waste is still remained in the filtered coating, the overall quality of the coating is influenced; due to the fact that the coating has certain viscosity, in the filtering process, the coating often adheres to a traditional coating filtering device and is inconvenient to collect, and if the coating adhering to the filtering device needs to be collected, a certain amount of manpower and material resources need to be wasted.