US 3,939,883 AGranted

Machine to fill insect rearing cells with diet

AssigneeThe United States of America as represented by the Secretary of Agriculture

InventorsEdsel A. Harrell, Alton N. Sparks, William D. Perkins, Woodrow W. Hare

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Abstract

A new apparatus for metering insect diet accurately and efficiently into individual insect rearing cells is disclosed. Insect diet is accurately metered into a set of plastic rearing cells which are preformed by a form-fill-seal machine. The insect diet is transferred from a thermally controlled reservoir through a pneumatic cylinder type metering device by means of a negative pressure on the intake and a positive pressure on the discharge. Thus very high viscosity diet materials can be utilized. The diet is discharged through a set of nozzles into individual plastic rearing cells. A ball type check valve is used on both the intake and discharge ends of the metering device, which can be incrementally calibrated by a threaded collar type mechanism. The whole apparatus is mounted to a stationary frame with a movable lower cross-head which imparts function to the metering devices. The number of metering devices can be varied and assembled in series and operated simultaneously with the number of rearing cells.

An apparatus for filling insect rearing cells with diet comprising in combination:

a. a means of storing insect diet, provided with a heater and insulated for temperature retention, said storing means attached to
b. a plurality of vertical metering means wherein each vertical metering means comprises in combination:
1. a vertical pneumatic cylinder having its upper end affixed to a upper horizontal stationary support for stability, and its lower stem end affixed to a lower horizontal movable support to impart function by upward and downward movement,
2. an adjusting collar on said lower stem end for calibrating dispensed quantities of insect diet,
3. a single passage serving for volume intake and outlet and communicating intermediate its ends with
4. a working intake and outlet chamber in said cylinder
5. a safety valve in said single passage to regulate pressure control
6. an intake check valve at one end of said single passage operating within a negative pressure limitation and attached to
7. a pressure hose supplying insect diet from said storing means under a negative intake pressure,
8. an outlet check valve at the other end of said single passage operating within a positive pressure limitation and attached to
9. a pressure hose dispensing insect diet under a positive outlet pressure,
c. a frame comprising:
1. a base mounted on casters,
2. vertical post supports,
3. said upper horizontal stationary support affixed to said vertical post supports at the ends thereof and also attached to the upper end of each vertical metering means,
4. said lower horizontal movable support affixed to the vertical post supports by a vertical sliding means and also attached to the lower end of each vertical metering means thereby imparting controlled function by upward and downward movement to each metering means and said lower horizontal movable support attached to and actuated into upward and downward movement by a pneumatic means, said lower horizontal support also affixed to a system of braces and rollers which travel on vertical tracks affixed to the vertical post supports thus imparting stability and maintaining the vertical metering means plumb,
d. a nozzle means communicating with said pressure dispensing hose for dispensing insect diet in controlled and preset quantity and into
e. a rearing cell structure comprising individual cells.

15 more elements

Abstract

Claims4