In order to enable the outflow direction of a fluid to be changed and to enable the outflow position of the fluid to be freely set, a nozzle device (7) of the present invention comprising: a flow path body that flows or holds a fluid and that has a flow path wall (6); and a nozzle unit (1) including a nozzle body (3) having a spherical surface on an outer periphery thereof and having a fluid passage (3a) formed thereinside, a holding mechanism of the nozzle body (3), and a securing member (4) that fixes the holding mechanism to the flow path wall (6), wherein the holding mechanism is made of a pair of thin plate members (2), each having a contact holding portion (2b) in contact with the spherical surface of the nozzle body (3) and having a flat portion (2a), and the holding mechanism rotatably holds the spherical surface in a state in which the nozzle body (3) is sandwiched by the contact holding portions (2b) of a pair of the thin plate members (2).

A rotating ejection type oozing hose comprises a rotation generator formed at an ejection opening at an interval along a longitudinal direction of a hose, applying a rotational force to a flow of water from an inner space of the hose to an outer space. The rotation generator comprises a barrel-shaped rotating space extended from the ejection opening and formed inside the hose. The rotating space is defined by a side portion formed to be extended from an inner wall of the hose and having a rotational force applying passage horizontally connecting the inner space of the hose to the rotating space and a bottom portion for closing a lower end of the side portion. The rotational force applying passage faces a point deviating from a center portion of the rotating space, applying a rotational force to water flowing into the rotating space through the rotational force applying passage.

A device for directing high pressure fluid includes: a spindle having a rigid body defining a fluid passageway therein; a spindle mount configured to mount the spindle to a fluid source; and a fluid distributer coupled to the spindle and including a plurality of spaced-apart fluid dispensers formed therein that are each fluidly coupled to the fluid passageway and configured to dispense fluid outside the device.

An emitter forms a flow path that runs to a discharge part from a water collecting part for receiving an irrigation liquid in a tube. The flow path includes a flow rate control part which includes: an end surface including a concave inclined surface that faces a film for receiving the pressure of the liquid inside the tube; a hole that opens at the center of the flow volume control part and connects to the discharge part; and a groove crossing the inclined surface and running to the hole. When the film adheres to the inclined surface as a result of the pressure of the irrigation liquid inside the tube, the flow volume of the irrigation liquid inside the emitter is controlled so as to be a volume that can pass through the groove.

A venturi-type composite nozzle device for suctioning and removing air pollutants is disclosed. The venturi-type composite nozzle device suctions air pollutants in the vicinity thereof by using negative pressure formed through the venturi principle, and then mixes same with water, jets the mixed water and brings same into contact with the air pollutants again, so as to have a large adsorption ratio of air pollutants in comparison to the amount of water usage, and enables water to be reduced by that amount, and thus has excellent operating performance. To perform such functions, the device employs a venturi-type intake casing, an introducing-spray nozzle, and an impeller.

A rotary disc filter having a backwash system that includes a series of feed pipes that project into and between successive filter discs that are mounted on a rotatable drum. Connected to an outer terminal end portion of the feed pipes is a series of nozzle holders. Each nozzle holder includes a main conduit, a series of branch conduits that project outwardly from the main conduit, and a connector for connecting the nozzle holder to a respective feed pipe. A series of detachable nozzles are secured to the outer terminal ends of the branch conduits.

A rotating ejection type oozing hose comprises a rotation generator formed at an ejection opening at an interval along a longitudinal direction of a hose, applying a rotational force to a flow of water from an inner space of the hose to an outer space. The rotation generator comprises a barrel-shaped rotating space extended from the ejection opening and formed inside the hose. The rotating space is defined by a side portion formed to be extended from an inner of the hose and having a rotational force applying passage horizontally connecting the inner space of the hose to the rotating space and a bottom portion for closing a lower end of the side portion. The rotational force applying passage faces a point deviating from a center portion of the rotating space, applying a rotational force to water flowing into the rotating space through the rotational force applying passage.

An emitter forms a flow path that runs to a discharge part from a water collecting part for receiving an irrigation liquid in a tube. The flow path includes a flow rate control part which includes: an end surface including a concave inclined surface that faces a film for receiving the pressure of the liquid inside the tube; a hole that opens at the center of the flow volume control part and connects to the discharge part; and a groove crossing the inclined surface and running to the hole. When the film adheres to the inclined surface as a result of the pressure of the irrigation liquid inside the tube, the flow volume of the irrigation liquid inside the emitter is controlled so as to be a volume that can pass through the groove.

An emitter includes a water intake part, a pressure-reducing flow path part, a first flow-rate adjusting part, a second flow-rate adjusting part, and a discharge part. The first flow-rate adjusting part includes a first valve seat, a first communication hole, a first diaphragm part, and a valve body. The valve body is disposed between the first diaphragm part and an opening of the first communication hole. The valve body moves toward the first communication hole as the first diaphragm part approaches the first valve seat. The shape of the valve body is such that, when the traveling distance of the valve body is less than or equal to a predetermined value, the gap decreases as the valve body moves and such that, when the traveling distance of the valve body exceeds the predetermined value, the gap increases as the valve body moves.

This emitter comprises: an emitter body having a groove, a recess and a through hole on the upper surface thereof; and a film joined to the upper surface. This drip irrigation tube comprises: a tube; a discharge opening that is a hole extending through a wall of the tube; and an emitter joined to an inner wall surface of the tube at a position of the inner wall surface corresponding to the discharge opening.