48results about How to "Prevent siphon" patented technology

A flow responsive dump valve mechanism for a straddle packer tool and has a valve controlled flow passage from which underflushed fluid, typically well treatment slurry, in a conveyance and fluid supplying tubing string can be dumped into a well casing. The dump valve mechanism incorporates a ratcheting power piston, an indexing mechanism and high and low load energy storage systems to accomplish open, closed and intermediate dump valve positions. The intermediate position increases the functionality of the tool by preventing accidental closure either due to the free fall of fluid through the coiled tubing or during flushing of the tool and permits the flow rate to be increased for thorough cleaning of the straddle tool and coiled tubing. For energy storage, a light compression spring provides power to cycle the indexing mechanism. Heavier load disc springs (Bellville Washers) are used to provide power for the ratcheting power piston to open the valve.

An atomizing nebulizer for dispensing a substance or medicament is described. The nebulizer is formed with a reservoir base releasably secured to an effluent vent cap that together capture a diffuser and integral dispersing baffle that are further formed with an uptake lumen or channel terminating with a nozzle jet. The diffuser dispersing baffle is positioned relative to the jet nozzle to optimize atomization of any of a number of such substances so as to maximize disbursement of the substance. The reservoir base also incorporates a pressurized fluid-accelerating inlet tube terminated with a metering orifice that cooperates with the nozzle jet when the inlet tube is received within the diffuser uptake lumen or channel. When so received, the nozzle jet axially registers proximate and superior to the orifice to establish a vacuum space that is in fluid communication with a capillary interstice established between the walls of the exterior of the inlet tube and the confronting interior surface of the diffuser lumen or channel. When a pressurized fluid is communicated through the lumen, the orifice, and into the vacuum space towards the nozzle jet, a vacuum develops in the vacuum space that, in combination with the capillary action of the interstice, draws the fluid proximate to the orifice and disperses it into droplets that are then entrained into a fluid stream to be further atomized upon impact with the baffle and then dispensed.

A releasable tubing connector including a male part that can be selectively fastened to a female part. The male and female parts are provided with internal valve assemblies that cooperate with one another to permit fluid to flow through the tubing connector. When the male and female parts are fastened together, fluid can flow through the releasable tubing connector. On the other hand, when the male and female parts are unfastened, fluid can flow through neither.

Devices, processes, systems, and articles of manufacture adapted to treat contaminated fluid, such as organic wastewater, are described. These are described to include lifting contaminated fluids, treating contaminated fluids, or both, through gas application. In certain designs, gas, such as pressurized air, may be used to lift contaminated fluids, such as organic wastewater (i.e., water having contaminating organics of some kind, e.g. residential septic wastewater). In certain designs, gas, such as pressurized air, may also be used to treat fluids interfacing with the gas.

Apparatus for applying liquid-solid dispersions to soil. Valve means are provided which permit cleaning. An elongate conduit, with an aperture at one end, and a first valve proximate such aperture may be opened to permit passage of a pig member. An upwardly extending conduit is “T'ed” off the elongate conduit, and connects with a manifold and a plurality of supply tubes to direct the liquid-solid dispersions to the soil at various points along the frame of the applicator. A second valve may be provided on the upwardly extending conduit, which may be closed to prevent initial supply of the liquid-solid dispersion to the apparatus and instead flow to the aperture to prevent plugging during initial operation. The second valve, when closed, further serves as an anti-siphoning valve to prohibit further supply of liquid solid dispersion to the manifold. A method for cleaning such apparatus is further disclosed.

A modular diverter valve with integral atmospheric type vacuum breaker has a housing and a replaceable rotatable cartridge is provided. The housing having a cartridge receiving chamber being surrounded by an internal housing wall. The housing also has an inlet port and laterally directed outlet ports. Each outlet port directs water for selective uses. The rotatable cartridge includes all working parts including a handle engaging portion, an inlet and an outlet for selective alignment with the housing ports. The cartridge has a hollow interior having an inlet tube in communication with the inlet of the cartridge and including a vented hollow space above the inlet tube, and including a float assembly to the vent the cartridge to the atmosphere. The float assembly has a resilient seal for sealing the open end of the inlet tube and a check valve to prevent siphoning to the inlet port.

The invention discloses a drainage air weir system for a constant-water-level sedimentation tank and particularly relates to an air weir for a sedimentation tank. The drainage air weir system comprises a water inlet, a water outlet pipe, an air weir air chamber, an air inlet and outlet pipe, an air inlet valve, an air outlet valve, a pressure transmitter, a water outlet main and an air duct. The drainage air weir system control intermittent water outlet of the water tank by means of air pressure change, and opening and closing of an air pipe valve are controlled by an automatic control system, so that drainage and drainage stopping are realized; the air weir adopts an under-liquid-level water outlet manner, is especially suitable for an aeration tank, prevents scum from flowing out with water flow and solves the problems of short flow and the like caused by poor construction of the traditional effluent weir, and an air hose is added to the water outlet main to effectively prevent siphoning.

An apparatus for installing an anti-siphon device into an automotive fuel filler comprises; a cylindrical mandrel having an inner surface and an outer surface, the outer surface of the mandrel adapted to receive a proximal end of the hose; a first grasping means configured to grasp the hose at a predetermined distance from a proximal end of the hose, and to insert the proximal end of the hose onto the outer surface of the mandrel; a first actuating means for inducing the first grasping means to grasp the hose at the predetermined distance from the proximal end of the hose, and to insert the proximal end of the hose onto the outer surface of the mandrel; a second grasping means configured to grasp and hold the proximal end of the hose on the mandrel during installation of the anti-siphon device in the hose; a second activating means for inducing the second grasping means to grasp the proximal end of the hose on the mandrel, and hold the hose thereon during installation of the anti-siphon device into the hose; an anti-siphon device insertion means having an outer surface, the anti-siphon device insertion means disposed in the mandrel, wherein the outer surface of the anti-siphon device insertion means is adjacent the inner surface of the mandrel; an anti-siphon device fixture disposed on one end of the anti-siphon device insertion means, wherein the anti-siphon device fixture is adapted to receive the anti-siphon device thereon; and a third activating means for inserting the anti-siphon device inserting means having the anti-siphon device disposed thereon, into the hose and withdrawing the anti-siphon device inserting means to the mandrel upon installing the anti-siphon device in the hose. A method is also described.

The invention discloses a toilet flushing device, comprising a toilet bowl with a pan. The bottom of the pan has sealing water which forms a water seal; the bottom of the pan is also provided with a spray hole; water in the spray hole is sprayed to the water seal. A water supply mechanism is also provided and can supplement water to the water seal when the toilet bowl performs siphoning. The toilet flushing device helps greatly improve flushing performance of a toilet bowl, flushing noise is greatly decreased, and the splashing problem is solved.

A washing machine is provided, The washing machine includes a first housing; a second housing disposed on the first housing; a first tub covered by the first housing and having a first opening formed at a front surface; a second tub covered by the second housing and having a second opening formed at an upper surface; a drain path provided to drain wash water of the first tub and wash water of the second tub and having at least one portion located at a position higher than a maximum water storage height of the second tub; and a connector coupled to the first housing and disposed at one portion of the drain path where wash water of the first tub and wash water of the second tub are joined.

The invention discloses a VOCs pre-collecting treatment system with a water seal and a treatment method of the VOCs pre-collecting treatment system. A pre-collector, a waste gas main pipeline arrangedat one side position of the pre-collector, a first pipeline arranged at the bottom of the pre-collector, a second pipeline arranged on the top of the pre-collector, a third pipeline arranged on the top of the pre-collector and an RTO device arranged at the tail end of the third pipeline are included. The waste gas main pipeline is connected with the pre-collector and stretches to the position below the liquid level of the pre-collector. The second pipeline is provided with a safety valve, one end of the second pipeline is connected with the pre-collector, and the other end of the second pipeline is connected to the third pipeline. The third pipeline is provided with a check valve and a gas mixer, a flow limiting hole plate is arranged between the check valve and the gas mixer, the gas mixer is externally connected with a connecting pipeline, and inflation of inert gas is conducted through the connecting pipeline. The VOCs pre-collecting treatment system has the beneficial effects thatthe integral structure of the device is simple, safety and stability are achieved, RTO production explosion accidents are effectively prevented, and the variable work condition capability of the RTOdevice is enhanced.