Dispensing – Cutoff operated by selectively preset volume or rate of... – Moving cutoff operating element with variable initial position
Patent
1985-01-25
1986-12-23
Rolla, Joseph J.
Dispensing
Cutoff operated by selectively preset volume or rate of...
Moving cutoff operating element with variable initial position
222 52, 222 61, 222 64, 222399, 422100, B67D 530
Patent
active
046307532
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a device for dispensing doses of liquid, from which doses of liquid are dipensed by means of a pneumatic effect.
Growing technical demands in process automation, in the chemical and related industries, and in machine construction have resulted in the development of a number of devices which dispense doses of liquid by means of a pneumatic effect. These devices are simple, accurate, and have a low susceptibility to technical trouble.
Known devices for dispensing doses often require complex apparatuses for stabilising the internal liquid level, sometimes have to be hand filled with the liquid which is to be dispensed before being used for the first time and/or when switched on after a long period of not having been used, and bubbles are often formed when these devices are filled which impair the dispensing accuracy and operation. The reservoirs of liquids are often limited in size and cannot usually be fitted underneath these devices. The regulation of the liquid level of the reservoirs often requires complex apparatuses.
The air distributors necessary for dispensing devices require various apparatuses for distributing the auxiliary pressure means. Electromagnetic, pneumatic, and otherwise powered systems, such as valves, cam plates and similar devices, are generally used for this purpose. These devices include a relatively large number of mechanical parts, seals etc. which become worn comparatively quickly and thus susceptible to failure, and which are difficult to maintain and cost intensive. The multiplicity of individual mechanical parts required for known distributor systems also has a bearing on the dimensions of these devices.
The object of the invention is to overcome the aforesaid disadvantages.
According to the invention this is achieved by way of the procedures in the appropriate parts of claims 1 to 24.
The essence of the invention is described in more detail below with the aid of the schematic embodiments in the drawings wherein:
FIG. 1: shows an overall schematic view of the dispensing device.
FIG. 2: shows an embodiment of the dispensing device with a level indicator built into the filling tank.
FIG. 3: shows the dispensing device with a liquid reversal switch.
FIG. 4: shows the modified reservoir of dispensing liquid for extraction from a flow channel or a tank.
FIG. 5: shows a variant of the modified reservoir with a reflux valve and/or flap trap.
FIG. 6: shows a schematic overall view of an air distributor.
FIG. 7: shows an example of the design of the actual distributor with a rotating distributor nozzle.
FIG. 8: shows an example of the distributor with a distributor nozzle which moves in a linear direction.
FIG. 9: shows a design variant of the distributor nozzle and extraction channel with an ejector effect.
FIG. 1 shows an overall schematic view of the dispensing device.
The shown dispensing device consists of a dispensing pipe 1 having a bend 12 at the top, an opening 11 into the atmosphere, and a bend 13 at the bottom. Above the lower bend 13 a dispensing tank 14 is arranged on the opposite side to the opening 11, in such a way that it lies below the opening 11. The volume of the dispensing tank 14 determines the quantity dispensed by the dispensing device. The dispensing tank 14 has an inlet opening 16 and becomes narrower above this inlet opening 16 to form a vent 17. The dispensing tank 14 and its vent 17 are located within a filling bulb 15. At its lower end the filling bulb 15 is connected to the inlet pipe 2 by means of the inlet opening 21. The inlet pipe 2 has a bend 22 at the bottom and opens into the bottom of the regulation tank 6 by way of its connection piece 23. The regulation tank is arranged in such a way that its bottom is below the inlet opening 21. The lower bend 22 of the inlet pipe 2 is arranged so low down that the liquid in the inlet pipe 2 forms a liquid barrier for the maximum overpressure which is needed in the dispensing device. In addition the upper end 101 of a supply pipe 100 is attached to the bottom of the regulation tank 6 at t
REFERENCES:
patent: 3085717 (1963-04-01), Anscherlik
patent: 3186808 (1965-06-01), Anscherlik
patent: 3435989 (1969-04-01), Lorenzen
patent: 3718438 (1973-02-01), Anscherlik
patent: 4143793 (1979-03-01), McMillin et al.
Alexander Jay I.
Ferguson Jr. Gerald J.
Hoffman Michael P.
Malamud Ronni S.
Rolla Joseph J.
LandOfFree
Device for dispensing doses of liquid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for dispensing doses of liquid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for dispensing doses of liquid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-167525