摘要:
An irrigation sprinkler includes a riser and a nozzle rotatably mounted at an upper end of the riser. A gear train reduction is mounted in the riser and a turbine is coupled to the gear train reduction for rotation by water entering a lower end of the riser. A gear driven coupling mechanism mounted in the riser couples the gear train reduction and the nozzle. A pressure regulator is mounted in the riser and is adjustable from a top-side of the sprinkler.
摘要:
A sprinkler comprises a nozzle, a turbine and a gear train reduction. The gear train reduction has an output stage that is coupled to the nozzle. The turbine is located between the nozzle and the gear train reduction and is coupled to an input stage of the gear train reduction.
摘要:
A solenoid actuated pilot valve includes a pilot valve housing defining a pilot valve chamber and a solenoid. The solenoid includes and end cap connected to the pilot valve housing, a reciprocable plunger, and a piston having a shaft with a first end connected to and end of the plunger and a second end connected to a piston head. The end cap has a bore through which the shaft of the piston reciprocates and a first port separate from the bore. A first seal on a first side of the piston head is provided for sealing a first end of the first port. A second seal on a second side of the piston head is provided for sealing a first end of a second port in the pilot valve housing.
摘要:
An adjustable stator is mounted in the lower end of a pop-up sprinkler riser and includes a vertically extending frame portion and a pair of valve portions that extend horizontally from an upper end of the frame portion. A coil spring is squeezed between a lower end of a drive subassembly and a mandrel mounted in a lower end of the frame portion. The mandrel and the frame portion have mating projections which allow the vertical position of the mandrel to be adjusted. This adjusts the downward biasing force exerted by the coil spring against the frame portion and the valve members carried thereby. This varies the pressure of a water stream flowing past a turbine in the riser, and the speed of rotation of the turbine which in turn changes the speed of rotation of a nozzle driven by the turbine.
摘要:
A liquid sample filtration apparatus includes: a) a module retaining filter elements; b) a filter clamping and fluid injection apparatus positioned relative to the module to engage a filter element thereon, and includes a pair of first and second opposing engageable members to sealing engage a filter element therebetween; c) an inlet tube connected to an opposing engageable member; d) an outlet tube connected to an opposing engageable member; e) a motor to move the module relative to the filter clamping and injection apparatus to register filter elements on the module to the clamping and injection apparatus; and f) a motor associated with the filter clamping and injection apparatus to move the opposing engageable members into substantial sealing fluid communication relative to a filter element on the module. An apparatus for engaging opposing ends of a filter element includes: a) a member having a recess configured to engage one end of a filter element, including a first fluid passage communicating with the recess to pass fluid between the recess and externally of the member; and b) a second member positioned in opposing juxtaposition relative to the other member, and having a projection sized and shaped to matingly fit within the other member recess, the second member projection including a second recess configured to engage the other end of the filter element, the second member including a second fluid passage communicating with the second recess to pass fluid between the second recess and externally of the second member.
摘要:
Disclosed is a new pole mounted revolving air circulating fan for inducing air movement within an air mass by use of a rotating impeller which simultaneously revolves around a vertical axis. The pole mounted revolving air circulating fan comprises a telescoping support pole extending substantially vertically upwardly from a mounting floor surface to a mounting ceiling surface, the ends of the support pole frictionally engaging the mounting surfaces. A fan, comprising a rotary air impeller coupled to an electric motor through a drive shaft, is revolvedly mounted on the vertical support pole. A generally cylindrical motor housing encloses the motor and the motor power supply leads. A blade guard, constructed of wire rods forming a substantially annularly shaped wire cage, encloses the impeller to prevent injury from contact therewith. The guard has a central hole through the back wherethrough the front end of the motor housing extends. The blade guard also has a bracket formed thereon adjacent the central hole whereby the blade guard is connected to the motor housing. A rotatable electrical contact assembly, having rotating wiper contacts cooperating with stationary ring contacts, allows power to be supplied to the fan motor while the fan is rotating around the vertical support pole. A manually actuated fan power switch, mounted on the support pole, completes or interrupts the electrical circuit to the fan motor thereby turning the device on or off. The fan is moved around the support pole with a rubber drive wheel coupled to the motor drive shaft, the drive wheel frictionally engaging a stationary rail which encircles the vertical support post whereby rotation of the drive wheel causes the fan to revolve around the post.
摘要:
An irrigation sprinkler includes an outer case and a riser extensible from the outer case by water pressure and normally in a retracted position. A nozzle is rotatably mounted at an upper end of the riser. A turbine is mounted in the riser for rotation by water entering a lower end of the riser. A gear train reduction is mounted in the riser. A gear driven coupling mechanism mounted in the riser couples the gear train reduction and the nozzle. A pressure regulator valve is located inside a nozzle turret of the sprinkler and includes a valve member that is pivotably mounted between the gear train reduction and the nozzle.
摘要:
An irrigation sprinkler includes a riser and a nozzle mounted at the top of the riser that can rotate and emit a stream of water. The sprinkler further includes a diffuser mechanism that can intermittently interrupt the stream of water as the nozzle rotates. A gear train reduction is mounted in the riser and a turbine is coupled to an input shaft of the gear train reduction and is rotatable by water flowing through the riser. A drive assembly couples the nozzle and the gear train reduction and is configured to allow a user to select between a full-circle mode of operation and an oscillating mode of operation.
摘要:
A sprinkler includes a turbine, a nozzle, a gear train reduction and a reversing mechanism that rotatably couples the gear train reduction and the nozzle. The gear train reduction includes an input stage and a planetary gear drive output stage that includes a first portion of the reversing mechanism. A second portion of the reversing mechanism is located outside of the gear train reduction. The second portion of the reversing mechanism includes a pair of arc tabs. At least one of the arc tabs is adjustable to establish an arc of coverage of the sprinkler when the water flowing past the turbine causes the gear train reduction and the reversing mechanism to oscillate the nozzle back and forth between a pair of arc stops. The arc stops are defined by the locations of the arc tabs. The input stage of the gear train reduction includes a mechanism that allows manual rotation of the nozzle between the arc stops without having to back drive the gears in the input stage.
摘要:
A sprinkler includes a stream nozzle with a plurality of circumferentially spaced, radially extending stream forming ports. A non-rotating arc adjustment sleeve is mounted for axial movement relative to the stream nozzle to selectively block the stream forming ports to vary an arc of coverage of a plurality of streams of water ejected from the stream forming ports.