58results about How to "Act as pressure" patented technology

The invention discloses an assembled green thermal-insulation quakeproof wall and a preparation method thereof. The quakeproof wall comprises a surrounding plate and reinforcing columns, middles of side walls of the surrounding plate are provided with trapezoidal grooves, openings of the trapezoidal grooves are gradually increased from inside to outside, and pressure supporting frames are in clamped connection in the trapezoidal grooves and fit the trapezoidal grooves. The surrounding plate is internally in a hollow structure, upper and lower end faces of the surrounding plate are provided with panels, and wall panels are arranged outside the panels. The reinforcing columns are hollow quadrangular sections, one side of each reinforcing column is connectedly clamped in an inner concave partof the corresponding pressure supporting frame, and melt adhesives are filled between lateral sides of the reinforcing columns and the pressure supporting frames. The assembled green thermal-insulation quakeproof wall has advantages that the lateral sides of the surrounding plate are provided with the trapezoidal grooves gradually narrowed from outside to inside, convenience in mounting and demounting is achieved, and efficiency in mounting and demounting is improved; by arrangement of the pressure supporting frames, a bearing effect can be achieved, the integral service life is prolonged, and firmness in mounting is improved; by arrangement of a foam board, heat insulation and preservation functions are achieved.

The invention discloses a pressing die for a meter housing. The pressing die comprises an upper heating plate with a male die and a lower heating plate with a female die. An upper supporting plate is connected to the upper heating plate. An upper pushing plate is connected to the upper supporting plate. A push rod penetrating the upper heating plate and the male die is installed on the upper pushing plate. A limiting plate is connected to the female die. An upper pulling plate is connected to the upper pushing plate. The upper pulling plate is connected with the limiting plate through a limiting pin. An adjusting block and an adjusting screw connected with the adjusting block are arranged on the upper pulling plate. A molding core opposite to the push rod is arranged on the female die. A molding cavity of the meter housing is defined by the male die, the female die and the molding core. According to the pressing die for the meter housing, the problems that labor is wasted during product discharging and the working efficiency is low according to a pressing die for an existing plastic meter housing are solved.

The invention belongs to the field of mechanical engineering sealing, and discloses a novel multi-stage magnetic liquid sealing device. The novel multi-stage magnetic liquid sealing device successfully solves the problem that an existing sealing mode can not avoid mutual dissolution or mutual contamination between magnetic liquid and a liquid medium to be sealed. The device comprises a first-stage seal and a second-stage seal, wherein the first-stage seal is formed by a static ring (4), a pressure control valve (5), a movable ring (6), a spring (7), a spring base (8) and a set screw (9), and the second-stage seal is formed by a left pole shoe (10), a permanent magnet (11) and a right pole shoe (12). The first-stage seal is mainly used for sealing a liquid medium to be sealed in a seal cavity and preventing the liquid medium to be sealed from making contact with magnetic liquid (22), the second-stage seal is mainly used for sealing gas charged into a cavity between the movable ring (6) and the left pole shoe (10), and even when a shaft (21) does not rotate, the novel multi-stage magnetic liquid sealing device can reliably seal the liquid medium to be sealed.

Disclosed are a lateral electrode assembly of a petroleum well logging instrument and a manufacturing method thereof. The lateral electrode assembly includes a support body, an insulating layer, a fiber-reinforced resin layer, one or more wires, and a ring electrode. The side electrode assembly does not require oil injection and a pressure balance device, which simplifies the structure of the electrode assembly and reduces maintenance work.

The invention relates to a preparation method of a high-emissivity ablation-resistant and heat-insulating microsphere filler, which includes the steps of powder preparation and mixing, precursor slurry preparation, precursor powder preparation, and sintering process. Ablation of insulating microsphere fillers. Compared with the prior art, the present invention has high production efficiency, short production period, simple equipment and simple operation, and the prepared spray powder has good sphericity and special pore structure, and the coating prepared by using the microspheres as filler has the advantages of Low mass ablation rate, high self-radiation rate, good mechanical properties, can effectively resist 800kW / m 2 And the heat flow impact above, protect the matrix from high temperature erosion and deformation and failure.

The invention discloses a lined packing box. The lined packing box comprises a honeycomb type liner, at least one cavity communicating the top with the bottom is arranged in the honeycomb liner, a cover plate is arranged above the honeycomb liner, and a bottom plate is arranged below the honeycomb liner. Surrounding plates are arranged on the outer periphery of the honeycomb liner. Cover plate protrusion blocks are arranged at the lower end of the cover plate, surrounding plate grooves corresponding to the cover plate protrusion blocks are arranged at the upper ends of the surrounding plates, bottom plate grooves are arranged at the upper end of the bottom plate, and surrounding plate protrusion blocks corresponding to the bottom plate grooves are arranged at the lower ends of the surrounding plates. Cover plate grooves corresponding to the cover plate protrusion blocks are arranged at the upper end of the cover plate, and bottom plate protrusion blocks corresponding to the bottom plate grooves are arranged at the lower end of the bottom plate.

The present application relates to the field of medical screws, in particular to a double-threaded hollow screw with anti-rotation and anti-return, comprising a screw body with a hollow interior and openings at both ends, the screw body comprising a cylindrical rod body and a nail tail integrally formed at one end of the cylindrical rod body The outer wall of the cylindrical rod body close to the end of the nail tail is processed with a tail external thread, and the outer wall of the cylindrical rod body away from the nail tail is processed with a head multi-thread thread, and the lead of the tail external thread is greater than or smaller than that of the head multi-thread thread . The arrangement of the external thread at the tail and the multi-thread thread at the head in this application makes the double-threaded hollow nail form a displacement difference when it is screwed into the bone, so as to exert pressure and anti-pull, and reduce the implantation of the double-threaded hollow nail. The possibility of screw withdrawal and rotation occurs later; at the same time, by arranging a solid rod inner core in the screw body, the strength of the hollow screw is greatly improved.