KR910004342B1 - Packaging fluids - Google Patents

Abstract

No content.

Description

Fluid transfer device

1 shows a lance for herbicide delivery.

2 is an enlarged view of the handset of the spray stand of FIG.

3 is a perspective view of the handset shown in FIG.

4 is a longitudinal sectional view of the handset of FIGS. 2 and 3 with some omitted.

5 is a bottom view of the herbicide container provided in the handset shown in FIGS.

6 to 9 show the construction and filling of the container.

10 is a side cross-sectional view of a handset of an alternative embodiment.

11 is an enlarged fragmentary view of the handset of FIG.

12 is a rear view of the handset of FIGS. 10 and 11.

13 is a side view of a container provided in the handset of FIGS. 10-12

14 is a front view of the container of FIG.

15 is a rear view of the container shown in FIGS. 13 and 14;

* Explanation of symbols for main parts of the drawings

2: handset 6: spray head

12: trigger 14,49,51: compartment

24,132: cavity 26,40,126: bulkhead

28,134: container 36: latch

120: microswitch 128: socket

The present invention relates to a fluid delivery device, in particular, a device for delivering herbicides on the ground, although not exclusively.

The handheld spray stand for herbicide delivery comprises a handset and a delivery head in the form of a spray head, which delivery device is connected to the handset by a tubular support. The handset is gripped by the operator and the tubular support places the delivery port directly above the ground to be sprayed.

Typically, herbicides are intended to be supplied to the spray stand from a container that is supported on the operator's shoulder or accompanied by a back pack. One type of known container is, for example, a folding bag made of plastic, which is housed in a rigid casing such as a cardboard box. He and containers are sometimes similar to those used to pack wine. This, however, becomes a form of relatively expensive packaging because it requires forming and filling bags and forming cardboard boxes to insert filled bags into the boxes. Also known, the bottle-shaped container has a spiral abdomen that engages the corresponding spiral socket provided in the spray object, and a duct extending from the socket to the delivery port. However, this construction device is slightly awkward to use because the bottle must be provided to the spray table without a cap and can not be connected to the spray table in rapid motion. In addition, relatively intractable spray tables and bottles must be fixed by the operator while the neck of the bottle is fully screwed into the socket. As a result, there is a significant risk that herbicides spill over during this operation. Such spillage is an economic loss, harmful to the operator, and ruining the crop if it falls away.

The hand held spray bottle of the type described above has been designed for professional users to date. "Professional employer" means local authorities and similar corporations dealing with relatively large land, using appropriately trained personnel. Such users see, for example, purchasing relatively large amounts of herbicides in packages containing three liters. However, common sense, most home users do not buy such large amounts of herbicide if they are sufficient to spray a small amount of normal sized private garden, for example less than 0.5 liters. In addition, the risk of spillage in the second type of spray stand described above is particularly high when the device is used by an unskilled person.

In the apparatus according to the first aspect of the present invention, it is possible to connect the container to the transmission member in rapid motion while minimizing the possibility of spillage. Indeed, in a preferred embodiment according to the invention, the simple act of providing the container to the delivery member in a way to combine the inlet and outlet fittings actuates the latching device so that the container is securely anchored to the handset.

The latching device should preferably be completely separated from the outlet and inlet fittings so that the weight of the container is not solely supported by the outlet and inlet fittings. This avoids unnecessary deformations of these fittings, thus reducing the possibility of leakage.

In a preferred embodiment, the latching device is in the form of a pivoting lever carried by the handset. This lever engages with the container in a snap action so that the lever is held in the running position by the interaction of the lever with the container.

The lever has a cam that the container comes into contact with when the container is provided in the handset to engage the outlet and inlet fittings. The contact between the container and the cam causes the lever to move from the release position to the position where the lever engages the container and locks the container with respect to the handset.

Preferably, the handset has a cavity in which the container is at least partially received. The cavity and the container may optionally have a cooperative formation that acts to guide the container with respect to the handset when the container is inserted and withdrawn. This preparation ensures reliable engagement between outlet and inlet fittings, and these fittings are joined together by push-fitting together.

The second aspect of the present invention focuses on streamlining the packaging of herbicides and other fluids in containers superimposed as the fluid flows and also creating an economical and convenient shape in herbicide packaging for relatively small amounts of herbicides. It was.

According to a second aspect of the invention, there is provided a fluid delivery device comprising a delivery port and a container of fluid to be delivered, the container being releasably received in the recess of the delivery port, the interior of the container being defined by a flexible bulkhead. Divided into two compartments, one of which contains fluid and communicates with the supply duct through an outlet provided in the wall of the container of the area located in the recess, the other compartment of the container in the exposed area It communicates with the surroundings through vents provided in the wall.

Preferably, the flexible wall portion is of sufficient size and flexibility to be placed over the entire interior surface of the wall of the container on one side of the flexible bulkhead, in order to reduce the volume of the liquid containment compartment to essentially zero.

The walls and soluble bulkheads of the container may be made of a compatible plastic material or may be fixed to each other by welding.

In a preferred method of manufacturing the container according to the invention, the flexible wall is applied to the inner surface of the rigid wall element such that the wall element and the partition define a relatively small volume compartment, the wall element and the partition wall then being in fluid tightness. Secured to each other at the periphery, the flexible bulkheads are deflected away from the inner surface of the rigid wall element, increasing the volume of the compartment. The second wall element is then applied to the first wall element to enclose the flexible bulkhead.

Upon filling of the container, for example, through an opening provided in one of the wall elements, the flexible partition moves from the inner surface of the wall element to increase the volume of the compartment. Similarly, as fluid flows out of the container, the flexible bulkhead moves back towards the inner surface of the rigid wall element.

Preferably, the fluid tight connection between the flexible bulkhead and the rigid wall element is achieved by welding, and these elements are made of plastic material. The heating apparatus may be attached to a molding machine that couples to the flexible partition wall and presses the flexible partition wall toward the inner surface of the rigid wall element to perform a welding operation. The molding machine preferably has a formation that corresponds as closely as possible to the internal shape of the rigid wall element.

In a preferred embodiment, the fluid delivery device comprises a hand grip sprayer for delivering herbicides, the sprayer having a handset with a recess for container containment. The liquid supply duct extends from the position adjacent the recess to the delivery head of the spray bottle so that when the container is inserted into the recess, the outlet fitting of the container engages the supply duct to allow the liquid in the container to flow into the delivery head. In another embodiment, the container may be attached to the delivery head instead of the handset.

BRIEF DESCRIPTION OF THE DRAWINGS For a clear understanding of the present invention and to show how it is effective, it will be described with reference to the accompanying drawings.

The spray table shown in FIG. 1 includes a handset 2 in which a rigid support member extends in the shape of a tube 4. The tube 4 carries a delivery port in the form of a spray head 6, which receives an electric motor (not shown) which drives the dispensing element 8 in the form of a spinning disk.

The duct 10 (FIG. 4) extends from the handset 2 through the tube 4 to the sprayhead 6. Handset 2 has a valve (not shown) that can be operated by trigger 12. A battery providing a source of power for the motor in the head 6 is housed in a handset 2, for example a compartment 14 at the front end of the handset, as shown in FIGS. 2 to 4. The voltage applied to the motor in the head 6 can be adjusted to adjust the speed of the disk 8 by the adjusting knob 16.

The handset 2 comprises a mold 18 connected to the handle member 20. The front end of the template 18 is closed by the puncture 22 to define the compartment 14. The rear part of the mold 18 defines a cavity 24, which is separated from the compartment 14 by a partition 26. The cavity 24 houses a container 28 containing herbicide to be supplied to the delivery head 6 via a tube 10. The container 28 is held in the recess 24 by two lugs 30 that engage the front rim of the container 28. At the other end of the container 28 is a latch 36 that engages with the rear edge 34 of the container 28.

The container 28 comprises a rigid casing consisting of a plastic mold 38 and a cover pedestal 41. The cast body 38 is a box shape having one side, and its open surface is covered by the diaphragm 41. Thus, in FIG. 4, the mold 38 has an upper wall 42, a regular front wall 44, a rear wall 46 and two side walls. The perimeter rim 48 surrounds the open face of the mold 38 in a position slightly inward from the outer periphery 32 of the mold 38. The flexible partition 40 made of a plastic sheet material is welded to the peripheral rim 48. The flexible partition 40 divides the interior of the casings 38 and 41 into two compartments 49 and 51.

The inclined wall 44 of the mold 38 has an outlet fitting that includes a spout 52 that provides communication between the compartment 49 and the outside of the container 28. As can be seen, this insert engages the inlet fitting 54 of the duct 10 to connect the compartment 49 of the container 28 with the duct 10. The end fitting 54 is fixed to the partition 26.

The rigid cover pedestal 41 is fixed to the mold 38 by welding the pedestal to the outer periphery 32. The diaphragm 41 has a communication hole 53 to allow air to enter the compartment 51 to allow the flexible barrier 40 to move freely.

For example, the container 28 is capable of containing 400 ml of herbicide completely, which is an appropriate amount for most home gardening purposes.

For use, the container 28 is loaded into the cavity 24 by providing an inlet 52 to the inlet fitting 54 to join these two parts together by push fit. The container 28 then engages the lug 30 and pivots upward until the rear end meets the latch 36. The latch 36 may be formed as a cam surface such that the latch is carried outwardly by the container 28 and subsequently snaps back below the rear rim 34 to hold the container 28 in place. Alternatively, the latch 36 may be manually retracted when the container 28 is fully inserted into the cavity 24.

The hole 53 can be initially closed by, for example, adhesive tape or the like, which must be removed before use. Since the spray table is intended to be used with the support tube 4 inclined downward from the handset 2 to the spray head 6, the herbicide will flow under gravity from the container 28 to the transfer head 6. . The spinning disk 8 is rotated by an electric motor in the transfer head 6 under the control of the voltage regulator 16 and the herbicide is distributed by the disk 8 in droplet form when it reaches the disk 8. . The flow of fluid through the duct 10 is regulated by the trigger 12.

As the liquid flows from the container 28, the flexible partition 40 deflects against the compartment 49 to reduce the volume of the compartment 49. At the same time air flows through the aperture 53 to occupy the compartment 51 (FIG. 4). This avoids the need to provide a vent in the container 28 so that air enters the enclosed enclosure for the fluid without leaking through the vent. When the container 28 is empty, the flexible bulkhead 40 will be in contact with the entire inner surface of the mold 38. The inclination of the front wall 44 helps direct the last few milliliters of fluid into the inlet 52. When the container 28 is completely empty, it is simple to remove the container from the cavity 24 by manual operation of the latch 36 and replace the container with a filled container. In order to reduce the risk of contact with the operator as a herbicide or other fluid in the container 28, it will be appreciated that the container 28 is not adapted to be refilled by the user but is to be replaced by the cartridge. have.

Similarly, when the same spraying table is used for different types of plant treatments, a container 28 of herbicide for killing weeds in one fluid, such as a packed area, may be used for different fluids, for example, formulations for lawn treatment. It is also simple to replace by the second container 28 contained therein. Of course, it is usually necessary to pass the cleaning fluid through the spray stand to remove all traces of the original herbicide, and such cleaning fluid may also be contained in a similar container 28.

6 to 9 show the manufacturing and filling of the container 28. 6 shows a template 28 including an insertion opening 52, in which a separating plate 40A is covered to form a flexible plate 40 along the template. The molding machine 56 can move in the direction of the arrow A into and out of the mold 38. The sheet plate 40A is disposed between the mold 38 and the molding machine 56, and as the molding machine 56 moves toward the mold body 38, the sheet plate 40A is shown in FIG. As described above, the film is pressed while contacting the inner surface of the mold 38.

The molding machine 56 has an electric heating element 58 extending around the molding machine 56, and when the molding machine 56 is in the position shown in FIG. 7, the sheet plate 40A has a heating element 58. ) And the peripheral wall 48 are firmly bound. The heating element softens the plastic material of the sheet plate 40A and the wall 48, thus welding the sheet plate 40A to the mold 38, as shown in FIGS. Let it be. In order to improve safety, one or more peripheral walls 48 are provided to provide a corresponding number of welds 60.

When the molding machine 56 is withdrawn from the mold 38, the flexible partition 40 remains in an overlapped state as shown in FIG. The diaphragm 41 is then put in place and welded to the perimeter 32 of the mold 38. Subsequent filling of the container causes the partition 40 to move away from the inner surface of the mold 38 as shown in FIG. 9 so that air is replaced through the vent 53. As can be seen, the flexible bulkhead 40 is more than the area confined by the weld 60 to make the partition 40 look like the inner surface of the mold 38 when the container is empty. It is large, and consequently the flexible bulkhead 40 is flattened in FIG. 9 but will collapse or otherwise crush when the container 28 is filled.

10 to 15 show another embodiment of the handset used with the tube 4 and the spray head 6. The tube 4 and the duct 10 are shown in FIG. 10.

The handset shown in FIG. 10 consists of a slightly U-shaped body made of a first protrusion 102 for receiving a tube 4, a second protrusion 104 constituting a handle member, and a connecting portion 106. . The duct 10 enters the first protrusion 102 and is connected to the outlet of the valve 110. The valve 110 is operated via a link comprising two rods 114 and 116 operatively connected to each other by the rocker 118 from the adjustment pivot 112 provided on the handle 104. The microswitch 120 is provided on the wall of the connection portion 106 and is operated by the displacement of the rod 116 when the adjustment pivot 112 is operated. Thus, for operation of the spray table, the adjustment pivot 112 causes the valve 110 to open, the herbicide to flow into the spray head, and to operate the switch 120, to rotate the spray head 8. Power to the motor (see FIG. 1). Power for this purpose is obtained from a battery (not shown) housed in the handle 104.

As shown in FIG. 11, the inlet to the valve 110 has an inclined end 124 and includes a short length of metal pipe 122, the purpose of which will be discussed later. The tube 122 is secured in the partition 126 installed in a fixed position with respect to the handset. The valve 110 is also fixed to this partition 126.

The partition 126 is equipped with an inlet fitting for the valve 110 and consequently for the tube 10. This inlet fitting includes a tubular socket 128 surrounded by the skirt 130. Tube 122 protrudes into socket 128.

Socket 128 and skirt 130 protrude into cavity 132 provided in the handset. The cavity 132 is occupied by the front of the herbicide container 134. The rear part of the container 134 protrudes from the cavity part 132 as shown in FIG. The container is shown in greater detail in FIGS. 3 to 15 degrees. It includes two casing halves 136 and 138 abutting each other at seam 140. The two casing halves 136 and 138 are mirror images of each other, so that the container is symmetrical about the seam 140 as a whole.

Each of the housing parts 136 and 138 has a peripheral lip 142 that meets at the seam 140 to provide a peripheral flange that extends around the container 134. In addition, side ribs 144 are provided at the front of the container. This front portion 146 is slightly narrower than the rear portion 148 so that the rear portion 148 of the container is flush with the outer surface of the area of the handset defining the cavity 132.

Casing halves 136 and 138 with the flexible bulkheads corresponding to the flexible bulkheads 40 in the embodiment shown in FIGS. 1 to 5 being fixed to these casing halves at the seam 140. Stretched between The interior of the container is thus divided into two compartments, one of which is defined between the flexible bulkhead and the casing half 136, and the other of which is defined between the flexible bulkhead and the other casing half 138.

The casing half 136 has an outlet fitting 150, which, as shown in FIG. 11, has an insertion opening 152 for engagement in the socket 128, and a skirt 130. And a collar 154 for engagement. The tube 122 enters the insertion opening 152.

The casing half 138 has a vent (not shown) corresponding to the vent 53 shown in FIG. Although not shown in the figure, the outlet fitting 150 also has a stopper connected to the collar 154 by a fusible strap to prevent the insertion opening 152 when the container is removed from the cavity. A recess 156 may be provided in the flange 142 (see also FIG. 11) to accommodate the stopper when the container is inserted into the recess 132.

The container has recesses 158 that open downward and outward on each side. Each recess 158 has a dimple 160 on its inner surface.

As shown in FIGS. 10 and 12, the handset is equipped with a latching device in the form of a lever 162. This lever pivots freely about the pivot axis 164 to the portion 102 of the handset. The lever 162 has latch elements 166 that engage in the recesses 158 to retain the container 134 in the recess 132 when the container 134 is inserted into the recess 132. . These latch elements 166 are provided with projections (not shown) that snap in engagement with depression 160 to hold lever 162 in the position shown in FIG.

Lever 162 has a cam 168 located within the handset. The cam 168 can move in and out of the cavity 132 upon displacement of the lever 162.

The inner walls of the cavity 132 have formations such as grooves (not shown) for cooperating with the flange 142 and the ribs 144 to guide the container in and out of the cavity 132.

For operation, the container 134 is inserted into the cavity 132 in the direction of arrow A in FIG. During the initial phase of this insertion motion, the lever 162 is pivoted downward from the position shown in FIG. 10 due to its own weight, so that the cam 168 protrudes into the cavity 132. The container 134 is guided into the cavity 132 by cooperative action between the formations in the cavity 132 on the one hand and the flange 142 and the rib 144 on the other hand. This guidance directs the outlet fitting 150 of the container to the inlet fitting 128, 130 in the handset, such that the insertion opening 152 enters the socket 128.

Similarly, the tube 122 enters the inlet 152 and if the container is used for the first time, the oblique end face 124 of the tube 122 passes from the container through the valve 110 (when opened). What flows into (10) serves to cut through the partition provided in the insertion opening (152).

During the final phase of the movement of the container into the cavity 132, the front end of the container is fitted with the cam 168 and any further displacement of the container 134 is such a latch element to keep the lever 162 in the fitted position. A protrusion on 166 snaps into depression 160 and causes the lever to be displaced to the position shown in FIG. 10 where latch element 166 is engaged in recess 158. Final engagement of the latch element 166 with the recess 158 and the container 134 is achieved by pushing the container firmly inward with respect to the cavity 132 in the direction of arrow A. FIG. Proper engagement of the container 134 with the latch element 166 provides a visual indication that the container is provided with a cavity 132 while the outlet fitting 150 cooperates appropriately with the inlet fitting 128, 130 of the tube 10. It can be seen that it is properly located within.

This device can be used by the driver to hold the handle 104 with one hand and to operate the adjustment pivot 112 with the thumb of his hand to open the valve 110 and actuate the switch 120. It can be seen that the center of gravity of the container 134, whether full or empty, is behind the handle 104 and balances the weight of the tube 4 with the weight of the spray head. This feature relieves the spray rod from fatigue over long periods of time.

At the end of the spraying operation, the container 134 may be removed from the cavity 132 by grasping the lever 162 and manually pulling it downward (as in FIG. 10). This releases the latch element 166 from the recess 158 and at the same time causes the cam 168 to push the container 134 out of the cavity 132 so that the outlet fitting 150 from the inlet fitting 128, 130 can be achieved. Disconnect The insert 152 may be closed by a stopper previously protected in the recess 156.

It will be appreciated that the system described above allows containers of other fluids, such as herbicides or cleaners, to be quickly and safely connected to and disconnected from and to the handset with minimal leakage or leakage.

Further, although the container is shown in the handset in the embodiment of the present invention described with reference to the drawings, it can be seen that it is possible to allow the container to be adapted to different positions on the discharge device, for example the spray head 6.

Claims (18)

A fluid delivery device comprising a delivery engine having a delivery port, and a container containing a fluid to be delivered, wherein the container is secured to the delivery engine by a releasable latching device and further extends from the inlet fitting to the delivery port. And an outlet fitting that is releasably engaged with the inlet fitting of the apparatus. The fluid delivery device of claim 1 wherein a latching device is provided on the delivery engine, the container has a recess at a position away from the outlet fitting, and the recess is engaged by the latching device. 3. A fluid delivery device as claimed in claim 2, wherein the latching device is comprised of a latch member that swings freely with respect to the delivery engine and is engaged in the recess by a snap action. 4. The fluid delivery device of claim 3 wherein the latch member comprises two latch elements engaging each recess provided on both sides of the container. The fluid delivery device of claim 1 wherein the latching device is automatically actuated by the container when the container is provided to the delivery engine to secure the container to the delivery engine. 6. A cam according to claim 5, wherein the latching device is actuated by the container during displacement of the container to engage the outlet fitting and the inlet fitting so as to displace the latching device from the release position to the support position where the latching device engages the container. Fluid transmission device characterized in that it has. The fluid delivery device of claim 1, wherein the container is at least partially contained within a cavity provided in the delivery engine. 8. The fluid delivery device of claim 7, wherein the cavity has an internal formation that cooperates with the external formation on the container. The fluid delivery device of claim 1 wherein the outlet fitting and the inlet fitting are coupled to each other by push fit. The fluid delivery device of claim 1, wherein the interior of the container is divided into two compartments, one communicating with the outlet fitting and the other communicating with the surroundings through a vent by the flexible bulkhead. 2. The fluid delivery device of claim 1 wherein the delivery engine has a handset on which the delivery port is supported, wherein a container is fixed to the handset. A container of fluid which is intended to be secured to a delivery organ, providing a device according to claim 1. A liquid delivery device comprising a delivery port and a container for conveying liquid, wherein the container is releasably received in a recess of the delivery port, the interior of the container being provided by a flexible partition, one in the recess as containing liquid. It is divided into two compartments, which communicate with the supply duct of the delivery port through the outlet provided in the wall of the container in the located area and communicate with the surroundings through the air vent provided in the wall of the container in the exposed area. Liquid delivery device. 14. A fluid delivery device as claimed in claim 13, wherein the delivery port comprises a handset and a spray head connected to the handset by a support member, wherein the container is carried by the handset. 15. The method of claim 14, wherein the supply duct comprises a tube extending from the handset to the spray head, the tube having end fittings in the handset, the end fittings being joined by connecting elements at the outlet of the container. Liquid delivery device. 16. The fluid delivery device of claim 14 or 15, wherein the handset and the container have a cooperating device for holding the container relative to the handset. 14. The fluid delivery device of claim 13, wherein the wall of the container comprises two components, between which the flexible bulkhead is fixed. 18. The fluid delivery device of claim 17, wherein the two components are symmetrical with respect to each other about a plane where they meet.

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