초록 ▼

A fluid dispenser for use in consistently depositing relatively thick and lumpy materials onto receiving surfaces which employs a supply path to a plurality of pump/valve combinations and a feedback pressure line to assure an adequate pressure at the point of deposit. There are positive displacement

A fluid dispenser for use in consistently depositing relatively thick and lumpy materials onto receiving surfaces which employs a supply path to a plurality of pump/valve combinations and a feedback pressure line to assure an adequate pressure at the point of deposit. There are positive displacement pumps which operate continuously through the plurality of valves with an additional feedback path to assure constant flow of the material.

대표청구항 ▼

Apparatus for dispensing a thixotropic food onto a food surface comprising: source means for providing a continuous supply of the thixotropic food; conveyor means for transporting the food surface past a dispensing position; a dispensing port mounted above the dispensing position; valve means having

Apparatus for dispensing a thixotropic food onto a food surface comprising: source means for providing a continuous supply of the thixotropic food; conveyor means for transporting the food surface past a dispensing position; a dispensing port mounted above the dispensing position; valve means having “on”and “off”conditions and an input port and first and second output ports; flow conducting means connecting the input port to the source means to receive a supply of the thixotropic food therefrom, the first output port connected to the dispensing port to deposit the thixotropic food on the food surface as it passes through the dispensing position, said flow conducting means including a positive displacement pump means connected to the source means to move the thixotropic food therefrom to the input port; first return means connected to the second output port and to the source means to provide a first path to return excess thixotropic food to the source means and to provide continuous motion of the thixotropic food through the valve means; second return means connected to the flow conducting means and to the source means to provide a constant second path independent from the first path to return excess thixotropic food to the source means and to provide continuous motion of the thixotropic food in the flow conducting means, the provision of continuous motion operating to overcome the thixotropic tendency to resist motion; flow restriction means connected to the second return means to provide a back pressure to assure continuous flow to the valve means; position sensing means operable to produce a signal indicative of the position of the food surface with respect to the dispensing position; computer means capable of receiving the signal indicative of position and operable to control the “on”condition of the valve means in accordance therewith; connecting means to connect the conveyor means to the computer means so that the speed of the conveyor means is controlled by the computer means; speed sensing means in communication with the computer means to produce an output signal indicative of the speed of the conveyor means and to supply the output signal to the computer means; and food surface and thixotropic food sensing means for supplying an output indicative of the number of food surfaces and a quantity of thixotropic food and connecting it to the computer means.