7results about How to "Increase rotational power" patented technology

The invention relates to the technical field of water body cleaning, and particularly provides an initial rainwater rapid purification device based on a reverse grating principle, the initial rainwater rapid purification device comprises a main cylinder body, a water inlet pipe, a water outlet pipe, a cylinder cover and a water inlet cylinder, the water inlet pipe is communicated to the water inlet cylinder, water flow rotationally flows in the circumferential direction of the water inlet cylinder, and a water outlet cavity is formed between the water inlet cylinder and the main cylinder body; the inner diameter of the net cylinder is the same as that of the water inlet cylinder, the straight line where the opening direction of meshes in the side wall of the net cylinder is located is obliquely arranged along the horizontal plane and deviates from the central axis of the net cylinder, and the meshes enable the water flow rotating direction of the inner ring of the net cylinder to be opposite to the water flow rotating direction of the outer ring of the net cylinder. A sewage collecting barrel is fixed to the bottom of the water inlet barrel, when sundries rush to the mesh barrel along with water flow, the sundries larger than the diameter of meshes are directly blocked by the meshes, the sundries smaller than the diameter of the meshes collide with inlets of the meshes under the action of centrifugal force and are popped out of the meshes, and small sundries are filtered under the condition that the passing ability of the water flow is not affected.

A rotating sprinkler head, relating to the field of irrigation equipment, includes a base, a spraying element, vanes, and a positioning unit. The base is used to connect a water pipe and has a chamber with a water outlet. The spraying element is disposed on the base and connected to the water outlet. The spraying element includes an annular wall surrounding the water outlet, with a through groove formed within the annular wall. A spraying section is provided at the upper part of the through groove, and a positioning section is provided at the top of the spraying section. The spraying section has a spray channel communicating with the through groove, at least a portion of which extends circumferentially around the spraying section. The vanes are connected to one end of the spray channel. The positioning unit is connected to the base and used to position the spraying element on the base. When water is sprayed from the spray channel, it simultaneously drives the spraying element to rotate along the first circumferential direction. The vanes are used to increase the lever arm of the spraying element in contact with the water, thereby increasing the torque to generate greater rotational power and achieving a higher rotational speed under the same water pressure for more uniform spraying.

The invention discloses a turbine-driven centralizer for well wall finishing. The turbine-driven centralizer comprises a fixed mechanism, a movable mechanism and an anti-inversion mechanism. The fixed mechanism is connected with the movable mechanism through an anti-inversion mechanism; the fixing mechanism comprises a solid drill rod and a turbine stator; and the turbine stator is fixedly mounted on the solid drill rod. According to the turbine-driven centralizer for well wall finishing, dependence of transmission power of a drill column is broken through, uninterrupted well wall finishing operation in the whole well drilling process is achieved, irregular well holes caused by necking and collapse due to well wall instability are finished, and a cuttings bed is cleaned in time.

The utility model discloses an auxiliary rotating device, which comprises a gear motor and a torque sensor, the gear motor is connected with one end of the torque sensor, the other end of the torque sensor is connected with a cross slider through a cross slider shaft, the cross slider is connected with a chuck support, a chuck is arranged on the chuck support, and the chuck is connected with the cross slider through a cross slider shaft. The chuck is connected with a rotating disc through a bearing, and when the gear motor works, the rotating disc can be driven to rotate through the torque sensor, the crosshead shoe shaft, the crosshead shoe, the chuck support and the chuck. The auxiliary rotating device provided by the utility model can provide rotating power for the collecting ring to simulate a field rotating environment, can provide rotating power with larger torque, and is provided with the torque sensor, so that torque transmission fluctuation can be detected in real time.

The invention discloses a textile fabric uniform dyeing and drying treatment device, and relates to the technical field of fabric drying, the textile fabric uniform dyeing and drying treatment device comprises a machine body conveying table, a carrier controller is mounted below the machine body conveying table, a drying bin is mounted above the machine body conveying table, a radiator is mounted above the drying bin, and a comprehensive drying mechanism is arranged in the drying bin; a circulating recovery mechanism is arranged below a machine body conveying table, a biconical guide cylinder is used for guiding hot air in a flowing mode that the hot air flows internally in a direct flow mode, is spiral in the middle and is mainly provided with four branch pipes on the periphery aiming at dead angles, firstly, the hot air in the internal direct flow portion can be directly blown to the central area of fabric, and stable dry airflow is provided; the middle spiral air flow can conduct spiral surrounding drying on the middle portion of the fabric, then hot air is guided to the surface of the fabric in all directions through the novel guide cylinder structure, it is guaranteed that each portion of the fabric can be effectively dried, and drying integrity is improved.

The invention discloses an explosion-proof holder stepping motor sensorless control method, which adopts an EKF (Extended Kalman Filter) sensorless control algorithm based on Kalman filtering to carry out state estimation when a holder runs in a high-speed domain, and can accurately control the rotating speed and the angle position of a motor without depending on a position sensor. The problem that the space of the explosion-proof holder is limited and a sensor is difficult to install is solved, and the reliability of the system is improved. The weak magnetic control of the stepping motor solves the problem that an EKF position sensorless control algorithm cannot drive a high-load holder to rotate at a high speed due to insufficient voltage at the two ends of the stepping motor, and the function of increasing the running speed range of the explosion-proof holder motor is achieved by weakening a rotor magnetic field, reducing the counter electromotive force output of the motor and reducing voltage occupancy. Fuzzy PI control is introduced into a speed current double-closed-loop dq decoupling control strategy, so that the phenomenon of high-frequency out-of-step of the hybrid stepping motor is reduced to a certain extent.

This invention relates to a combined tool for extended reach casing and cementing. A float collar, a bypass valve, and an oscillating device are sequentially screwed onto the top of the power guide shoe. The oscillating device's oscillating shaft, from top to bottom, comprises an upper connector, a hexagonal tenon, a polished rod section, and a threaded section. A spring sleeve is screwed onto the upper part of the threaded section of the oscillating shaft. Disc springs are stacked above the spring sleeves, each disc spring fitting around the outer circumference of the polished rod section. A spring plug is pressed above the disc springs, and a hexagonal hole is provided along the axis of the spring plug, fitting onto the hexagonal tenon. A spring cylinder is screwed onto the lower outer circumference of the spring plug. The inner cavity of the spring cylinder has an inner step, located below the threaded section and spaced at intervals. An oscillator is installed below the inner step, its bottom abutting against the top of the lower connector. The upper external thread of the oscillating lower connector is screwed into the lower port of the spring cylinder. This tool can generate self-excited vibration, reducing friction, increasing casing running speed, and improving cement stone strength and cementing quality.