Rotary device, rotary system, and fluid machinery, to which press-actuated gate valve mechanism is applied

A rotary device with a press-actuated gate valve structure, comprising:

• a cylinder block which bounds a cylindrical inner chamber, is formed with a gate valve groove on an inside of the cylinder block along a direction of a central axis of the cylindrical inner chamber, and is formed with a pressure fluid chamber on an outside of the gate valve groove;
• a rotor assembly which forms an axially-extending sealed working space inside the cylindrical inner chamber by rotating in the cylindrical inner chamber;
• and
• a gate valve mounted outside the rotor assembly, so that at least a region of an upper surface of the gate valve or at least a region of an upper surface of an extension of the gate valve is exposed in the pressure fluid chamber and receives a force which is acted on the gate valve towards an inside of the cylinder block by a pressure fluid in the pressure fluid chamber, wherein:
• the gate valve has an end pressed against an outer surface of the rotor assembly, and successively switches between a retracted state and a protruded state, so that the gate valve is retracted in the gate valve groove when in the retracted state, and the gate valve is protruded from the gate valve groove to partition the axially-extending sealed working space into a first piston (A) and a second piston (B), each of which has a variable volume, when in the protruded state,
• the pressure fluid is a liquid or a gas, and when the pressure fluid is a liquid, the pressure fluid chamber is in communication with a pressure fluid supply source, and when the pressure fluid is a gas, the pressure fluid chamber is sealed, or is in communication with a pressure fluid supply source,
• the pressure fluid chamber communicates with one, in which a fluid pressure is greater, of the first piston space (A) and the second piston space (B), and the one of the first piston space (A) and the second piston space (B) serves as the pressure fluid supply source,
• at least one resetting assembly mounting hole is formed in the cylinder block on a radial outside of the pressure fluid chamber,
• a gate valve resetting assembly is mounted in the resetting assembly mounting hole, and a resetting force towards the inside of the cylinder block is applied to the gate valve or the extension of the gate valve by the gate valve resetting assembly,
• a gland, opening downwards, is tightly fixed above the resetting assembly mounting hole on the outside of the cylinder block,
• a fluid exchanging space is formed under the gland, and the fluid exchanging space communicates with the pressure fluid supply source, and communicates with the pressure fluid chamber,
• the gate valve resetting assembly comprises:
• a guide pin bushing located in the resetting assembly mounting hole, and opening upwards;
• a resetting spring having a lower end abutting against a bottom of the guide pin bushing, and an upper end fixed to a lower surface of the gland;
• a connecting bolt having an upper portion fixed to the bottom of the guide pin bushing, and a lower portion extending into the pressure fluid chamber and connected to an upper portion of the gate valve or an upper portion of the extension of the gate valve;
• and
• a straight-line guide way disposed between the guide pin bushing and the resetting assembly mounting hole on an outside of the guide pin bushing and configured to guide a direction of movement of the guide pin bushing.