5results about How to "Promote buoyancy" patented technology

The application discloses an arm support for blood sampling in a physical examination center, which comprises a tightening assembly and a holding assembly. The tightening assembly comprises a mounting frame, and gears are symmetrically arranged on the left and right sides of the inside of the mounting frame and are connected through pivots. An annular plate is arranged between the two adjacent gears. A rack is arranged on the outside of the annular plate, and the rack is engaged with the two adjacent gears. A ring-shaped groove is formed in the side wall surface of the annular plate. A plurality of arc-shaped blocks are slidably connected in the ring-shaped groove. The arc-shaped blocks are fixedly connected to the surface of the mounting frame through connecting blocks. The device has the effects of automatically tightening the rubber tube at the elbow of the examinee, applying iodophor on the skin surface and freely adjusting the position of the arm support through the cooperation of the adjusting assembly, the tightening assembly, the applying assembly, the arm support assembly, the holding assembly and other structures.

This utility model provides a mesh belt receiving and dust removal device, belonging to the technical field of mesh chain conveyors. Its structure includes a main frame, a mesh chain conveyor, a mesh chain vibration device, a blowing device, a hand-cranked adjusting wheel, and a power motor. The mesh chain conveyor and the power motor are mounted on the main frame and are connected for transmission. The mesh chain vibration device is mounted on the mesh chain conveyor. A gantry frame is mounted above the mesh chain conveyor, and a lead screw is threaded onto the gantry frame. A hand-cranked adjusting wheel is fixedly connected to the lead screw, and a blowing device is located at the lower end of the lead screw. This utility model uses a combination of mechanical vibration and air blades to remove dust from the plates on the mesh chain conveyor, which not only saves manual operation but also integrates the conveying and dust removal processes, improving process efficiency.

The utility model discloses an oil pipe oil extraction device which comprises a valve body, an oil pipe, a first oil pipe and a second oil pipe. A fluid inlet and a fluid outlet which are communicated with the floating cavity are respectively formed in the upper end and the lower end of the valve body; the total overflowing area of all the fluid outlets is smaller than that of the fluid inlets; the floating plate is arranged in the floating cavity, and the overflowing area between the floating plate and the inner wall of the floating cavity is larger than the total overflowing area of all the fluid outlets. The floating plate can move up and down according to the buoyancy of fluid in the floating cavity, when oil enters the floating cavity, the density of the oil is small, the floating plate sinks, the distance between the upper surface of the floating plate and the fluid inlet is increased, and the oil can stably enter the floating cavity and flow into the oil pipe; when the high-water-content oil-water mixture or water enters the floating cavity, the density of the fluid in the floating cavity is large, the floating plate floats upwards to block the fluid inlet, and the high-water-content oil-water mixture or water cannot enter the oil pipe, so that the oil production quality and the oil production rate can be improved.

The invention relates to the technical field of tunnel construction, and in particular to a method for synchronously detecting leaks of multiple sections of an inland river immersed tube with a large cross-section in a small dry dock. The method is suitable for a dry dock with at least three sections of immersed tubes, wherein the mooring posts at both ends of the first immersed tube are connected to the fairlead posts on the walls on both sides of the dry dock through a first cable, and the first cable does not pass through the tops of the second immersed tube and the third immersed tube; the mooring posts at the front end of the second immersed tube are connected to the mooring posts on one side of a dock door through a second cable, and the mooring posts at the rear end are connected to the fairlead posts on the wall on one side of the dry dock through a third cable, and the second and third cables do not pass through the tops of the first immersed tube and the third immersed tube; the mooring posts at both ends of the third immersed tube are connected to the winches on the side walls of the dry dock through a fourth cable, and the fourth cable does not pass through the tops of the first immersed tube and the second immersed tube; the method solves the technical problems of interference of cables on concrete layer pouring during the leak detection and floating process of multiple sections of immersed tubes in small and medium-sized dry docks in the prior art and reduction of underwater cable-carrying operations.

The utility model discloses a blue calico desizing device relates to calico desizing device field, it includes floating glue mechanism and a plurality of frictioning mechanism, floating glue mechanism includes operating frame, knock roll set and drive motor, knock roll set is rotatingly installed in the upper end of operating frame, drive motor is fixed in operating frame, and the driving motor is fixed in the operating frame. The driving motor is connected with the knocking roller set through a belt, the glue scraping mechanism comprises a limiting pressing frame and a desizing roller set, and the limiting pressing frame and the desizing roller set are arranged on the two sides of the printed cloth. According to the utility model, the floating glue mechanism is arranged at the front end of the glue scraping mechanism, so that the printed cloth can be knocked and vibrated through the knocking roller group before glue scraping, glue liquid on the printed cloth can float easily, the glue scraping mechanism can be cleaned quickly and conveniently, and the purpose of stable and thorough desizing is achieved; meanwhile, a scraper on the glue scraping mechanism can contract along with the movable frame, and the situation that the cloth is torn is not prone to occurring.