초록 ▼

This invention relates to a device and method for converting low continuous liquid flow to a high intermittent and pulsating flow. They are especially adapted for operating sprinklers, shower heads and venturi pumps at low flow. Applicant has accomplished these objectives by introducing liquid at a

This invention relates to a device and method for converting low continuous liquid flow to a high intermittent and pulsating flow. They are especially adapted for operating sprinklers, shower heads and venturi pumps at low flow. Applicant has accomplished these objectives by introducing liquid at a controlled low rate of flow such as by the use of pressure compensating drippers in a liquid supply line, thence into a chamber which is somewhat expansible in volume and increasing pressure therein while restricting the outflow of the liquid until pressure created by introduction of such liquid is sufficient to eject the liquid intermittently at a higher flow and over a greater area. This is achieved by utilizing a pressure responsive check valve in the liquid exit and more particularly by utilizing a check valve designed for quick response to create a water hammer effect. At the same time the check valve is provided with openings downstream of the exit to create a venturi effect to admix air or another liquid with the effluent stream. The sprinkler units may be mounted upon chambers in the form of spikes for insertion into the ground, which spikes may also be mounted in a spaced manner upon the pipe or conduit supplying liquid thereto. The chamber may also be in the form of a flexible section of conduit upon which the check valve and spray unit are mounted supported upon the ground by means of a vertical rod or the like.

대표청구항 ▼

Apparatus for converting pressurized low continuous liquid flow to a high intermittent pulsating flow which comprises a pressure container having a low elasticity, means for supplying a continuous flow of liquid thereto at a controlled low flow rate and thereby establishing a pressurized body of liq

Apparatus for converting pressurized low continuous liquid flow to a high intermittent pulsating flow which comprises a pressure container having a low elasticity, means for supplying a continuous flow of liquid thereto at a controlled low flow rate and thereby establishing a pressurized body of liquid within said container, a pre-set normally closed check valve connected to an outlet from said container, said check valve remaining closed and preventing a liquid from flowing out of the pressure container at a lower pressure and opening at a pre-set higher pressure at which liquid flows out of the container and closes itself at said lower pressure, whereby the outlet from the pressure container will remain closed until liquid flowing into the container causes pressure within the container to increase and the pre-set check valve to re-open thus allowing for a volume of the liquid that was accumulated in the container when pressure was increased, to be ejected through the container outlet and the pre-set check valve, conduit means connected to the outlet of said pre-set valve, means associated with said conduit means providing sufficient resistance to liquid flow to force said pre-set check valve, when it opens, to become widely open, thus allowing for liquid at a high rate of flow to be ejected from said container thereby causing the volume and pressure of the liquid within the container to decrease and said pre-set check valve to close, said pre-set check valve having a quick response as a result of said resistance whereby a “Water Hammer”effect is created thus causing the liquid to be ejected at a higher pressure and velocity than that of the incoming liquid flow.