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OwnerHubert Eirich, Walter Eirich +3inventors
InventorsHubert Eirich, Walter Eirich, Paul Eirich, Josef Hasenhundl, Adolf Spengler
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A method and apparatus for measuring water content of flowable mixtures such as casting sand, concrete, or chemical mixtures. The mixture is agitated in a mixing tray (10), then a moisture sensing measuring probe (7) is inserted into the mix for taking a measurement. The probe is then withdrawn from the mix and cleaned, as by brushing, stripping, blasting with air, or spraying with liquid. A temperature sensor (8 ) may also be inserted into the mix with the measuring probe. The probe is mounted in a lifting unit (5) which normally holds the probe in a cooling and cleaning casing (6) out of the mix. The unit can also locate the probe at different selected levels within the mix.
A method for measuring the water content of flowable materials, e.g., casting sand, wet concrete or chemical mixtures, in a mixing tray fitted with a mixing tool for mixing said material and being relatively rotatable with regard to said mixing tray, a lifting and lowering unit having a cooling and cleaning casing disposed in stationary position above the level of the surface of flowable material in said mixing tray and vertically movably supporting a moisture sensing probe which is movable between a retracted position wherein said probe is disposed within said cooling and cleaning casing and an extended position wherein said probe is disposed in the flowable material, an automatic liquid dispensing means having a liquid injection nozzle disposed for injecting liquid into said flowable material and control means for receiving signal input from said probe and operating said liquid dispensing means to adjust the liquid content of said flowable material to a predetermined value, comprising the steps of:
In a mixing apparatus for agitating flowable materials such as casting sand, wet concrete, or chemical mixtures, having a mixing tray in which said flowable material is disposed, a mixing tool disposed in said mixing tray and rotatable relative to said mixing tray for mixing said flowable material to a state of substantially uniform mixture, a moisture measuring probe disposable in said mixture for measuring the moisture content thereof, an automatic liquid dispensing means having a liquid injection nozzle disposed for injecting liquid into said flowable material in said mixing tray, and means associated with said moisture sensing probe for receiving signal input from said probe and operating said liquid dispensing means to inject liquid into said flowable material to adjust the liquid content of said material to a predetermined value, wherein the improvement comprises:
Dependencies are inferred from the claim text.