FLUID PROPORTIONER MEANS

• US 3,677,296 A
• Filed: 03/16/1970
• Issued: 07/18/1972
• Est. Priority Date: 03/16/1970
• Status: Expired due to Term

• Current Assignee: James E. Berger
• Original Assignee: James E. Berger
• Inventors: Berger, James E.
• Primary Examiner(s): Nelson, M. Cary
• Assistant Examiner(s): Zobkiw, David J.
• Application Number:
  US05/019,771
• Time in Patent Office: 855 Days
• Field of Search: 137/88,607,115,116.3,117,488,492,492.5,606
• US Class Current: 137/606
• CPC Class Codes: G05D 11/00 Control of flow ratio control of chemical or physico-chemical variables, e.g. pH-value, G05D21/00; control of humidity G05D22/00; control of temperature by varying the mixing ratio of two fluids having different temperatures G05D23/13; control of viscosity G05D24/00
• CPC Class Codes: Y10T 137/777 Spring biased
• CPC Class Codes: Y10T 137/87684 Valve in each inlet

Abstract

A fluid proportioning system for obtaining desired mixtures of fluids has at least two fluid inlet conduits with each of said conduits carrying a flow meter and flow control means. A common conduit interconnects the inlet conduits and leads to an automatic fluid supply control valve means for permitting passage of fluid in the common conduit at a predetermined pressure and cutting off fluid flow at a second predetermined pressure. A surge tank is interconnected with the automatic fluid supply control valve means for receiving fluid from the common conduit and an output conduit delivers fluid from the surge tank. Preferably the automatic supply control valve means is a mechanically operated pressure valve circuit which has an inlet means for admitting fluid flow and an outlet means for delivering fluid from the inlet means. Valve means permits fluid flow from the inlet means to the outlet means in a first position of the valve means and cuts off fluid flow from the inlet to the outlet means in a second position. A fluid pressure sensitive means controls the valve means to make it automatically responsive to a buildup in pressure at the outlet means to shift from the first to second position and automatically responsive to a lowering of pressure in the outlet means to cause the valve means to shift from the second position to the first position.

Claims

1. A fluid proportioner for obtaining a mixture of fluids comprising, at least two fluid inlet conduits, each of said inlet conduits having a flow meter and flow control means, a common conduit interconnecting said inlet conduits and connecting with an automatic fluid supply control valve means for permitting passage of fluid at fluid pressures below a first predetermined low pressure and cutting off fluid flow at a second predetermined pressure higher than said first pressure, said fluid supply control valve means comprising a mechanical actuator responsive to said first fluid pressure and said second fluid pressure for permitting and cutting off fluid flow respectively, a surge tank interconnected with said automatic fluid supply control valve means for receiving fluid from said common conduit through said automatic fluid supply control valve means, said first and second pressures being sensed between said automatic fluid supply control valve means and said surge tank, a tank outlet means for delivering fluid from said tank, a line pressure regulator in said tank outlet means for allowing fluid flow therethrough at a pressure below said second predetermined pressure, said mechanical actuator comprising, first means for moving in response to said predetermined low pressure condition between said automatic fluid supply control valve means and said tank and for moving reciprocally in response to said predetermined high pressure condition between said automatic fluid supply control valve means and said tank, means for determining said low pressure condition and said high pressure condition, a first arm linked to said first means for movement in response to movement of said first means, and a second arm linked to said first arm by a spring whereby predetermined movement of said first arm causes snap movement of said second arm at a predetermined position of said first arm permitting rapid actuation of said second arm at high and low pressure values exerted on said first means.