DE1057484B - Device for filling predeterminable amounts of liquid - Google Patents

Description

GERMAN

The invention relates to a device for filling liquid in predeterminable Amounts which z. B. od for filling certain amounts of gasoline. Like. Used in cans can. It is special when filling such flammable or chemically aggressive liquids It is important to dose it precisely so that it does not overflow.

There are already continuously operating filling machines known in which the dimensioning of the The amount of liquid is determined by pistons sliding in a cylinder. At a known facility of this type, one end of the piston rod lying outside the cylinder has a copper ring, through which electrical contact is made with contact pieces that form the circuit of two Control electromagnets. Valves are opened and closed by these electromagnets. The way of working This machine is continuous, which means that empty containers are always available for filling must be kept. A single filling of such containers is possible with the known device therefore not possible because no guarantee is given after the device has been stopped and started up again it is given that the last container filled before the stop and the first container after the Restarting is filled, contains the required amount of liquid, because when switched off the piston stops in any middle position.

To change the filling space, the width of the piston is changed in the known device. For this purpose, the piston must be replaced by another, which requires cumbersome assembly.

To avoid these disadvantages, a device for filling predetermined amounts of liquid is in which a piston rod in the axial direction of a cylinder in which two inlet openings are arranged, which are connected to a liquid supply pipe, is movable and carries a stop, in the path of which a triggering device is located, which is triggered after the impact of the stop and thereby closes an associated outflow valve and opens another valve, designed according to the invention in such a way that the piston rod carries two stops within the cylinder, between which the piston is freely movable on the piston rod and by means of which he meets after on one of the stops the previously stationary piston rod with it, the piston rod at each of its two ends carries at least one further stop, in whose path there is a triggering device, which after the impact of one of the other stops from device for Bottling
predeterminable amounts of liquid

Applicant:
Frederick Brewer, London

Representative: Dipl.-Ing. C. Wallach, patent attorney,
Munich 2, Kaufingerstr. 8th

Claimed priority:
Great Britain, 25 August 1955

Frederick Brewer, London,
has been named as the inventor

is released and thereby closes a discharge valve assigned to it and a corresponding reflux valve opens, through the excess fluid, a fluid reservoir for later use is fed back.

The outflow valves and the return valves are expediently in the end walls of the Cylinder attached. According to an advantageous embodiment of the invention, the end walls of the Each cylinder is provided with a T-shaped tube connected to the interior of the cylinder, wherein the outflow valves and the backflow valves are attached to the ends of the tubes.

A plurality of stops can be provided at each end of the piston rod, the stops at each end are offset in the longitudinal direction of the piston rod and in the radial direction thereof, so that by turning the piston rod around its axis, a certain stop to hit one of the Tripping devices arrives.

To turn the piston rod around its axis, a handwheel can be attached to it outside of the cylinder be.

To read the setting of the stops, a can be calibrated with a preferably in quantities of liquid Scale of cooperating pointers be provided, the pointer or the scale with the handwheel is connected, while the scale or the pointer is fixed.

For the optional supply of the liquid to one or the other inlet opening, a through two lever arrangements switchable two-way

909 510/42

valve be provided, the two lever assemblies with the release devices and the four Valves are coupled in such a way and each lever device when actuated one of the two triggering devices biased and one of the two outflow valves opens and the two return valves closes, the pretensioned release device when actuated the previously open, assigned to her The outflow valve closes and the corresponding backflow valve opens.

The release device can have spring-loaded actuating arms, which are swing arms who in turn carry stops that cooperate with stops that are on swing arms provided for actuating the valves are attached.

Further details and advantages of the invention emerge from the following description of a Embodiment based on the drawing. In the drawing shows

Fig. 1 is a schematic elevation of a device according to the invention, partially in section,

Fig. 2 is a plan view of the device of Fig. 1 with the piston rod omitted;

3 and 4, 5 and 6, 7 and 8 correspond to FIGS. 1 and 2 and show the device in different ways Working positions, some details shown in Figs. 1 and 2 omitted are;

9 shows a view of a release device,

10 shows a view in the direction of arrow A in FIG. 9 of a detail of the triggering device,

Fig. 11 is an elevational view of a detail of the trip device of Figs

FIG. 12 shows the parts shown in FIG. 11 from another side.

As shown in FIGS. 1 and 2, the filling device has a cylinder 1 with end walls 2 and 3 on, which are provided with inlet openings 4 and 5, through which the liquid at both ends of the cylinder can be supplied under pressure through inlet pipes 6 and 7, depending on the setting of one Two-way valve 8, which is through a supply pipe 9 with a source of liquid, not shown, for. B. a liquid pump. The end walls 2 and 3 also have outlet openings 10 or 11, through which liquid can be filled alternately from each end of the cylinder. The outlet openings 10 and 11 are connected to T-shaped pipes 21 and 22, respectively, of which the T-shaped pipe 21 an outlet port controlled by an outlet valve 23 and one controlled by a backflow valve 24 Has reflux opening, while the T-shaped tube 22 is one of an outlet valve 25 Controlled outlet opening and a controlled by a backflow valve 26 backflow opening.

In the cylinder 1, a piston rod 12 is freely displaceable in its longitudinal direction, the two The ends of the piston rod 12 protrude from the end walls 2 and 3 of the cylinder 1 in a liquid-tight manner. Within the cylinder 1, two stops 13 and 14 are firmly wedged with the piston rod 12. Outside of of the cylinder 1, the piston rod 12 carries four further stops 15 or four in the vicinity of its two ends. 16, each of the four stops 15 and 16 having a different radial and axial position on the piston rod 12 owns.

Inside the cylinder 1 there is a piston 17 on the piston rod 12 between the stops 13 and 14 freely movable.

Outside the cylinder 1, two tripping devices 31 and 32 are provided, one at each end of the cylinder, the tripping devices 31 and 32 having actuating fingers 33 and 34 arranged to reach the stops 15 and 16 of the piston rod 12, respectively and can be operated. The release devices 31 and 32 are mechanically coupled to each other and to the two-way valve 8, as indicated schematically by the dash-dotted lines, and serve to control the valves 23, 24, 25 and 26 so that only one of these valves is open at any time, while the other three valves are closed.

In addition, the piston rod 12 has a manually operated one at one or both ends Wheel 35, which carries a pointer 36, which has a fixed scalfi 37 painted over. The piston rod 12 can by means of d§s Handwheel 35 are rotated so that one of the four stops 15 or 16 radially the correct one for actuation

ao movement of the finger 32 or 33 required position occupies.

Two foot or hand levers, not shown, are provided to turn the two-way valve 8 off to fold one into the other end position and to preload the release devices 31 and 32 and so that the valves 23, 24, 25 and 26 can be adjusted.

The arrangement described so far works as follows: If one of the mentioned foot or hand levers is actuated, the two-way valve 8 is turned over, for example in the position shown in Fig. 1, in the liquid under pressure through the tubes θ and 6 and the inlet port 4 to the inside of the cylinder 1 is fed. At the same time the release devices 31 and 32 are biased so that the Valves 23, 24, 25 and 26 can be adjusted so that only the outlet valve 25 is open, while the others Valves 23, 24 and 26 are closed. If now liquid is under pressure on the adjacent to the end wall 2 Side of the piston 17 is fed to the cylinder 1, the cylinder 17 moves accordingly away from the end wall 2 towards the end wall 3, as indicated by arrows in FIGS is. If one now assumes that from an earlier actuation of the device already Liquid in the cylinder space adjacent to the end wall 3 causes the movement of the piston 17 that the liquid located in front of the piston 17 through the open outlet valve 25, the outlet opening 11 and the T-shaped tube 22 is filled.

If the piston 17 hits the stop 14 of the piston rod 12 during its movement, so causes the further movement of the piston in the same direction that the piston rod 12 of the Piston 17 is taken and that, as a result, that of the four stops 16 (Fig. 1), in which Distance of the actuating finger 34 lies, strikes this finger 34 and actuates the triggering device 32. When this pretensioned release device 32 is actuated, the outlet valve 25 becomes, as in FIG 4 and 4, closed and the reflux valve 26 opened. As a result, the bottling of the Liquid interrupted while the remaining liquid in the cylinder in front of the piston from the continued movement of the piston 17 in the same direction through the return valve 26 flows back through a pipe connection, not shown, to the liquid source for later reuse, until the piston 17 has reached an end position shown in FIGS.

If the other foot or hand lever is now actuated, the two-way valve 8 is in its position in FIG. 5 The other end position shown is folded over, and the release devices 31 and 32 are pretensioned in such a way that Hate now only the release valve 23 is open, while the valves 24, 25 and 26 are closed (see. Fig. 6). The liquid supplied to the cylinder 1 through the pipes 9 and 7 and the inlet port 5 under pressure moves the piston 17 to the end wall 2 of the cylinder 1, while at the same time liquid that Was supplied to the cylinder during the previous working period through the exhaust valve open 23, the outlet opening 10 and the T-shaped tube 21 is filled.

Similar to what has been described above with reference to Figures 1 to 4, the piston 17 strikes during its movement now against the stop 13 and takes the piston rod during its further movement 12 with it, so that finally that of the four stops 15, in whose path the actuating finger 33 of the Trip device 31 (Fig. 1) is located, strikes against this finger 33, moves it and the preloaded Trip device 31 triggers, whereby the outlet valve 23 is closed and the return valve 24, such as shown in Figs. 7 and 8, is closed. The rest of the between the piston 17 and the cylinder end wall 2 then flows through the reflux valve 24 back to the liquid source for later use. When the piston 17 has reached its end position, the can first foot or hand lever are operated again, whereupon the filling device returns to the in Fig. 1 and 2 is the position shown.

From the foregoing it can be seen that the device dispenses predetermined amounts of liquid, alternately through the exhaust valve 23 at one end of the cylinder 1 and the exhaust valve 25 at the other end of the cylinder, whereby the flow of liquid through these valves is stopped every time * when the corresponding triggering device 31 or 32 when one of the stops 15 or 16 hit the corresponding Äusiösefmger 33 or 34 responds. Then allow the return valves that the piston can finish its respective operation.

To change the amount of liquid flowing out of the outlet valve 23 and 25, e.g. B. in cans of various Size, the piston rod 12 can be rotated by means of the handwheel 33. By turning this handwheel 35 various stops 15 and 16 for striking the actuating fingers 33 and 34, respectively to be brought. By selecting a suitable stop of the four stops 15 and 16, respectively the lengthwise displacement of the piston rod required to actuate the release devices 31 or 32 12 changes and thus the amount of liquid to be filled through the outlet valves 23 and 25, respectively be adjusted, the excess liquid in the cylinder in front of the moving cylinder piston for later use again the liquid source through the appropriate reflux valves 24 or 26 is supplied.

The scale 37 can be calibrated so that by means of the pointer 36 of the handwheel 34, the amount of liquid that can be filled can be read immediately.

Manifold modifications of the embodiment described so far are possible. For example the stops 15 and 16 can also be adjustable in the longitudinal direction of the piston rod 12. More or less than four stops 15 and 16 each can-? ■ ·. · be seen. A single foot or hand lever can be used to operate the filling device. The foot or hand levers can also be replaced by push buttons or other switches that are used for Presetting the device z. B. turn on a hydraulically operated auxiliary motor.

The piston rod can be arranged outside the cylinder axis, but parallel to it. It Several similar rods can also be provided, but only one of them is longitudinally displaceable needs to be that carries the various stops.

The tripping devices 31 and 32 can be constructed in any suitable manner. Fig. 9 to 12 represent an embodiment of the triggering device 32 that has proven to be expedient, wherein the triggering device 31 can be constructed accordingly.

As indicated schematically in Fig. 1 by the broken lines, the two trigger devices 31 and 32 connected to one another, the connection being made by a rod 51 (see Fig. 9) can be. The connecting rod 51 is in its longitudinal direction from one end position to the other Shift the end position each time when the two-way valve 8 of FIG. 1 is turned over.

The connecting rod 51 carries a crank arm 52 which is keyed to a spindle 53, and as a result is rotated when the connecting rod 51 is moved. The spindle 53 carries in radial direction two arms 54 and 55 wedged with her, the arm 54 being longer than the arm 55 and at its other end by a pin and slot connection is connected to a rod 56 which slides in a bearing 57 which is fixed on a main beam 58 of the release device is attached. The arm 54 carries a stop pin provided transversely to the rod 56 59, and arm 55 is by a pin and slot connection with a slotted arm 60 tied together.

Two similar trip arms 61 and 62 are hinged to the spindle 53 and are raised by springs pressed against adjustable stop pins, not shown. The trigger arms 61 and 62 carry with blocks 63 firmly connected to them (FIG. 10) and rotatable release fingers 34 under the action of a spring.

A shaft 64 is fixedly mounted on a carrier 65, which at the time was on the main carrier 58 of the Release device is attached. Two swing arms

66 and 67 are rotatable about the shaft 64. The swing arm 66 carries a release pawl at its lower end 68 and at its upper end a block 69. The release pawl 68 has such a position that it with the stop pin 59 of the rod 56 can work together. The block 69, together with the block 63 of the Trigger arm 61 temporarily holds the swing arm 66 in the position shown in FIGS. The swing arm 67 carries a fixed pin, which is not visible in the drawings and in a slot 70 of the Arm 60 slides (Fig. 12). The swing arm 67 also carries a block 71, the block 69 of the swing arm 66 corresponds. The block 71 together with the block 63 of the trigger arm 62 holds the swing arm

67 at times in the shown in the drawings Location.

The swing arm 66 is connected to a lever 72, which is shown in broken lines and which forms part of the exhaust valve 25 of FIG. 1, the remaining part of this exhaust valve not being shown is. A tension spring 73 is forward between the lever 72 and a freely movable one on the spindle 53.

seen collar arranged (Fig. 9 and 11). the Spring 73 is used to push the lever 72 into a position in which the outlet valve 25 is closed. The swing arm 67 is connected to a lever 76 which forms part of the backflow valve 26 of FIG forms, the remaining part of this reflux valve is not shown. A tension spring 77 is between the lever 76 and a collar 78 (FIG. 11) freely provided on the spindle 53. The feather 77 serves to push the lever 76 into a position in which the reflux valve 26 is closed.

The triggering device described works as follows: When the two-way valve 8 is brought into the position shown in FIG. 1, the connecting rod 51 moves into the position shown in FIG. The movement of the connecting rod 51 is transmitted to the crank arm 52 and the arm 54 and pulls the rod 56 into the position shown in FIG. As a result, the protruding end of the stop pin 59 strikes the release pawl 68 and causes the swing arm 66 to move counterclockwise (FIG. 9) to the position in which the outlet valve 25 of FIG. 1 is open. The outlet valve 25 is held in its open position against the action of the spring 73 by the locking action which is exerted by the overlapping and abutting blocks 69 and 63 of the swing arm 66 and trigger arm 61, as shown by the dashed lines in Fig. 10 is shown. When the exhaust valve is fully opened 25 so the stopper pin is moved away 59 through the tripping latch 68 and thereby the swing arm 36, the ability to move so that it later can move in the reverse direction 73 under the action of the spring.

By moving the connecting rod 51 into the position shown in FIG. 9, the arm 60 was from the arm 55 is pulled in the reverse direction of the movement of the rod 51. This allows the Swing arm 67, together with the lever 66 actuating the backflow valve, moves clockwise (FIG. 9) move under the influence of the spring 77, with an unillustrated pin of the arm 55 in the Slot 70 of the arm 60 is moved to the end of the slot 70, whereupon the reflux valve is completely closed is.

The triggering device 31 at the other end of the cylinder 1 operates in the opposite way, i. H. the Exhaust valve 23, which was closed by an earlier actuation, remains closed while the Return valve 24, which had been opened, is now closed, so that again from the four valves only the outlet valve 23 is open.

When the piston 17 of FIGS. 1 to 8 then strikes against the stop 14 and thereby the piston rod 12 moved with the piston 17, the effective stop 16 strikes the piston rod 12 against the Actuating fingers 34 and thereby presses the trigger arms 61 and 62 down, whereby the contact between the blocks on the opening arms 61 and 62 and swing arms 66 and 67 is interrupted. Both swing arms 66 and 67 then swing clockwise (FIG. 9) under the action of the springs 73 and 77, respectively, whereby the outlet valve is closed and the reflux valve is opened.

If the other foot or hand lever is operated later, the two-way valve moves in the position shown in Fig. 5, and the other release device 31 is operated in a similar manner. During this actuation and during the piston moves (Fig. 5 to 8), the effective stop 16 slides over the stop finger 34 of the triggering device 32, but without depressing the release arms 61 and 62 of this release device.

Claims (10)

Patent claims: 1. Device for filling specified amounts of liquid, in which a piston rod in axial Direction of a cylinder in which two inlet ports are arranged, which are connected to a liquid supply pipe are connected, is movable and carries a stop, in the way of a release device which is triggered after the stop has hit and thereby an assigned The outflow valve closes and another valve opens, characterized in that the piston rod (12) within the cylinder (1) carries two stops (13, 14), between which the piston (17) on the piston rod (12) is freely movable and by means of which it after hitting a of the stops (13, 14) carries the previously stationary piston rod (12) with it, the piston rod (12) carries at least one further stop (15, 16) at each of its two ends, in whose path is a triggering device (31, 32) which, after one of the other stops (15,16) is triggered and thereby an outflow valve associated with it (23,25) closes and a corresponding reflux valve (24, 26) opens through which the excess liquid is stored in a liquid reservoir is fed back for later use. 2. Apparatus according to claim 1, characterized in that the outflow valves (23, 25) and the return valves (24, 26) are mounted in the end walls of the cylinder. 3. Apparatus according to claim 1, characterized in that the end walls (2, 3) of the cylinder (1) each with a T-shaped tube connected to the inside of the cylinder (21,22) are provided, the outflow valves (23,25) and the return valves (24,26) to the Ends of the tubes (21, 22) are attached. 4. Apparatus according to claim 1, characterized in that at each end of the piston rod (12) a plurality of stops (15, 16) are provided, the stops at each end in the longitudinal direction the piston rod (12) and are offset in the radial direction, so that by Rotating the piston rod (12) around its axis a certain stop to strike one of the Release devices (31, 32) arrives. 5. Apparatus according to claim 4, characterized in that that a handwheel (35) is attached to it outside of the cylinder (1) to rotate the piston rod (12) around its axis. 6. Apparatus according to claim 5, characterized in that one with a preferably in Liquid quantity, calibrated scale (37), cooperating pointer (36) for reading the setting the stops (15, 16) is provided, the pointer or the scale with the handwheel (35) is connected while the scale or the pointer is fixed. 7. The device according to claim 1, characterized by a two-way valve (8), by actuating it optionally liquid is fed to one or the other inlet opening (4, 5). 8. Apparatus according to claim 7, characterized in that the two-way valve (8) through two lever arrangements is switchable. 9. Apparatus according to claim 8, characterized in that the two lever arrangements with the release devices (31, 32) and the four valves (23, 24, 25, 26) coupled in the manner are that each lever device when actuated one of the two triggering devices (31, 32) and one of the two outflow ίο valves (23, 25) opens and the two return valves (24, 26) closes, the pretensioned release device (31, 32) when actuated previously open, associated outlet valve (23, 10 25) closes and the corresponding reflux valve (24, 26) opens. 10. The device according to claim 1, characterized in that the triggering devices (31, 32) have actuating arms (34) which are under spring force and which are carried by swing arms (61,62) who in turn carry stops (63) that cooperate with stops (69, 71) that are attached to swing arms (66, 67) provided for actuating the valves (23, 24, 25, 26). Considered publications:
U.S. Patent No. 1,470,381. For this purpose 2 sheets of drawings © 90 »510/42 5.