Vane Fluid Transfer Device

Abstract

A vane type fluid transmission device, comprising a stator (10), a rotor (20), at least one vane (34), at least one first lining (40) and at least one second lining (50), wherein the stator (10) A room (13) is formed inside, and the room communicates with the outside through a flow channel; the rotor (20) includes a body (21) and a main shaft (22), and the main shaft (22) is connected to the main body (21). The body (21) is eccentrically arranged in the chamber (13), and the outer periphery of the body (21) is in tangential contact with the inner wall of the chamber (13). The body (21) has at least one chute (23) along the diameter direction; the blade (34 ) are pivotally embedded in the chute (23), the blades (34) are in contact with the inner wall of the chamber (13), the first and second linings are respectively pivotally embedded in the stator (10), and the first and second linings are respectively connected to the The center of the circle acts as the center, and the blades are pivotally connected with the first and second linings, so that the blades follow the center of the chamber and move back and forth along the chute; the end of the blade in contact with the inner wall of the chamber forms a circle. The arc surface keeps the tip of the vane in tangential contact with the inner wall of the room, thereby improving the efficiency of fluid pumping and transmission, and reducing the difficulty of forming the room by machining the stator.

Description

technical field [0001] The present invention relates to fluid conveying equipment, and more particularly, to a vane type fluid conveying device. Background technique [0002] The vane pump is mainly composed of a stator, a rotor, and one to several blades. Among them, a room is formed inside the stator, and two flow channels are opened in the stator. The space of the room communicates with the outside through each flow channel. The fluid enters and leaves the chamber respectively through each flow channel. The rotor is set in the rotating assembly inside the chamber. The rotation center of the rotor forms an eccentric state with the center of the chamber, and the outer peripheral surface of the rotor contacts the inner wall of the chamber. The rotor matches the blade The number of chutes varies from one to several. The long axis of each chute points to the rotation center of the rotor. Each blade is pivotally embedded in each chute. One end of each blade points to the rotati...

AI Technical Summary

Problems solved by technology

[0004] Existing vane pumps drive the centrifugal force of the blades to rotate through the rotor, which promotes the blades to slide outward during the rotation of the rotor, so that the ends of the blades keep in contact with the surrounding walls of the atrioventricular chamber, so that the fluid can be pumped; however, the existing vane pumps are used When pumping low-viscosity fluids such as gas, the tip of the blade and the surrounding wall of the chamber can still maintain contact during operation. When the existing vane pump is used to pump fluids with higher viscosity, it is easy to cause the The phenomenon that the surrounding walls cannot maintain contact to form a gap, which cannot effectively block the adjacent fluid space and affect the fluid pumping efficiency

[0005] Patent documents such as US4212603, US5087183, US5160252, US5181843, and US5558511 respectively disclose the prior art of vane-type fluid transmission devices, mainly forming annular grooves in the stator, and the grooves are concentric with the atrioventricular chambers, and the blades are protruding from the shaft. The pivot is embedded in the groove, and the movement of the blade is guided by the groove; since the rotor and the chamber are eccentric to each other, and the long axis of the blade pivotally embedded in the rotor points to the center of the rotor, the motion track of the mating blade when it is pulled by the rotor , the shape of the inner wall of the chamber presents a complex shape such as an ellipse or an oval, but the complex shape of the inner wall of the chamber greatly increases the difficulty of forming the chamber of the stator; moreover, because the blade is a plate with a thickness In order to avoid the interference between the end of the blade and the inner wall of the atrium on both sides, the end of the blade is sharply reduced in thickness, and the sharp shape of the blade end is likely to cause vibration when the blade end is subjected to the relative force of the fluid The phenomenon further produces running noise, and the vibration phenomenon at the end of the blade is easy to cause local thermal stress at the end of the blade and accelerate the material fatigue at the end of the blade, which affects the service life of the blade

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