DE2653023A1 - INJECTION DEVICE FOR SOIL TREATMENT - Google Patents

Description

Patent attorneys Dipl.-Ing. H.Wkickmann, Dipl.-Phys. Dr. K. Fincke

Dipl.-Ing. F. ΑΛΥειοκμανν, Dipl.-Chem. B. Huber

8 MUNICH 86, DEN

PO Box 860 820

MÖHLSTRASSE 22, CALL NUMBER 98 39 21/22

OUTBOARD MARIlTE CORPORATION, 100 Seahorse Drive, Waukegan, Illinois 60085, V.St.A.

Injection device for soil cultivation

The invention "relates to an injection device for liquids for tillage.

Self-contained, hand-operated floor sprayers with a single point were already from Innis Speiden earlier Chemical Company, formerly 117 Liberty Street, New York City, New York, and are currently being used by the Panagen Company, a division of the Morton Salt Company. Another example of such a device is the weed killing gun Mack (Mack anti-weed gun). Lawn aerators are already known; an example of this is the Greensaire lawn rake of Ryan Equipment Company, a subsidiary of Outboard Marine Corporation. The device according to the invention is in the first designs a modification of the Ryan WG 24-1 Turf Aerator.

In TJS-PS 3 602 166, in particular in Pig. 12, there is a valve shown to deliver a fluid to a liquid injector having a vertically slidable rod and a perforated Having valve tip; In this case, the valve arrangement is actuated by a rotating drum that contains the injector needle This is in contrast to the present invention, where a separate foot contacting the ground is provided is.

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U.S. Patent No. 3,136,274 illustrates a somewhat different valve mechanism in Figure 6 which again operates apart from the machine's injector needle moving mechanism as opposed to a ground contacting foot. The drives in this and the aforementioned PS may be of only general interest, which is also the US-PS ¹ η 2,056,337 and 2,255,040 applies to the drive mechanisms, the latter two PS directed to lawn spiked rollers without injectors.

U.S. Patent No. 3,025,806 relates to an injection nozzle assembly a valve which is operated by a part in contact with the ground. But the entire device is rotated and not reciprocated vertically.

The U.S. Patents enumerated below point generally vertically reciprocating tubular tines for injecting liquid treatment agents for plants or soil in the soil:

1,871,529; 2,214,083; 2,789,522; 3,136,274; 3,148,643; 3 450 073.

The following U.S. Patents were issued by the U.S. Patent Office in the parent US application used for the present application: 1,871,529; 2,056,337; 2,214,083; 2,255,040; 2,789,522; 3,025,806; 3,136,274; 3,148,643; 3,397,542; 3,450,073; 3,602,166; 3,783,804; 3 802 513} and the Swedish patent 309846 from 1.12.1955.

The invention provides a device for loosening the soil, for correcting its pH value, for changing fertility, to correct unfavorable soil pest conditions (nematodes, biological diseases, weeds, insects) by adding system-compatible insecticides, fungicides, nematicides or Herbicides on the plant roots.

The device has a wheeled, preferably self-

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moving chassis on, which is equipped with a device for vertical Moving several shafts back and forth, preferably in a staggered arrangement. There is at least one on every wave a downwardly directed prong is attached which has an outlet near its lower tip and a channel inside which is connected by a valve to a distribution line for all the tines. The distribution line is by means of a pressure hose connected to a separate, pressurized reservoir for the liquid to be injected. The treatment liquid can accordingly be applied under high pressure with a large volume by means of a conveniently operated applicator be injected because the user does not have to lug the reservoir around.

If the device is viewed as a reworking of the Ryan WG24-1 lawn aerator, the modification includes removing the protruding ones Prongs and associated casting from the lower ends of the six vertically reciprocating shafts of the Device and the fastening of six injector units with two prongs each according to the invention. These are by individual High pressure lines connected to a manifold that is also mounted on the device as part of the redesign. Of the Distributor is via a single pressure hose line, for example to a pressurized liquid reservoir from Type of tank trailer attached. Then the changed Tool dragged along the ground or lawn to be treated. Instead of a plug of earth from the ground or pulling out turf, as the original machine does, the modified machine sprays a metered amount of the liquid treatment agent in and below the surface of the earth with little damage to the surface. In typical If the injected liquid is under a pressure of 10.5 to 42 atm and the injections are from a depth of about 5 cm to an adjustable depth of for example up to 10 cm and deliver an adjustable dose of between 4 and 205 liters of treatment liquid per 100 m of floor area

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(1 - 50 gallons / 1000 square feet). In practice, the invention The unit is built from the start, but there are so many Ryan Turf Aerators in use that it can be manufactured is impractical from the start and a modification of existing equipment, as described above, is more advantageous.

The device according to the invention is particularly useful for handling poisonous treatment fluids, since the deposition of the fluids under the surface of the earth poses the risk of a Running away to rivers becomes low.

When the applicator is advanced on the surface to be treated hollow tips called prongs are alternately thrust vertically down below the surface and retracted vertically upwards. A supply volume of treatment liquid is prepared separately from the applicator held so that the applicator is more maneuverable and less bulky. The supply is under pressure and is through a pressure-resistant hose line supplied to the applicator. The drive to move the tines back and forth also actuates a flow-dividing valve which the treatment liquid of the One after the other, each prong feeds in, so that each prong only injects liquid when this prong is just below the Surface is located.

Further details of the invention emerge from the following Description of a preferred embodiment based on the accompanying drawings. Show in it:

1 a perspective. View of an original execution the device in use;

2 shows a perspective view of the injector unit of the The device shown in Fig. 1 seen a little more from behind and on a scale enlarged to FIG

3 is a perspective view with exploded Parts of an injector with two prongs of this

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leadership style;

Pig.4 is a partially cut away perspective view of an injector with two prongs of this embodiment, the valve being switched to an open position is shown;

Pig. 5 a perspective view from behind of a second, now more preferred embodiment of the applicator, in which its connection with the separate Supply of treatment liquid is shown;

Pig. 6 is a fragmentary perspective view of the in Pig. 5 shown embodiment, seen from the front, which shows the flow-distributing valve and its connections with fluid supply and discharge lines;

Pig.7 shows a longitudinal section through the flow-distributing valve the Pig. 6 and

Pig.8 is a fragmentary sectional view in another Level to show the connection of the fluid supply line with the valve chamber.

The hydraulic fluid injector 10 has an applicator unit 12, which are connected via a pressure-tight hose line 14 to a pressurized supply 16 of the treatment liquid is. In the illustrated embodiment, the reservoir 16 has the shape of a tank truck 18 or the like a compressor 20 is equipped to put the treatment liquid under a pressure of, for example, 10-42 at. The supply 16 may, for example, come from a sprayer for fruit crops, with the hose line 14 instead of one Tree spray stick is connected to the applicator unit 12.

The applicator unit 12 has a chassis 22 with a right and left rear wheels 24 and a steering system comprising a two-wheeled log truck 26 which is shown at 28 is mounted on the chassis 22 and one protruding forward

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Steering bracket 30 has. A petrol engine 32 is attached to the chassis, which is provided with equipment for driving the wheels 24.

The chassis also has an inverted Jooh 34 that supports at 36 a crankshaft 38 having, for example, six angularly offset, axially spaced cranked crank parts 40. (Further Conventional clutches are provided for drive interruption to the motor 32 either from the wheels 24 or from the Uncouple crankshaft 38.)

A crank arm 42 is mounted on each crank part 40, which is shown in FIG a TJ-shaped bracket 44 ends, which in turn at 46 at the upper end of a push rod 48 is pivotably articulated, which is displaceable in a bearing bush 50 fixed on the chassis 22 is. Each push rod 48 carries an injector unit 52 with two prongs under the relevant bearing bush 50.

In the illustrated embodiment (see in particular FIGS. 3 and 4), each two-pronged injector unit 52 has one Body 54, which can be cast, but in the example shown one by welding a plate and a Rohres unit is formed. The body 54 has a base plate 56 which has a lateral protrusion 58 at 60 is split, the gap leading to a vertical opening 62. A threaded hole 64 on the side that defines the gap 60 traverses, takes on a cap screw 66, with the help of which the Gap 60 can be narrowed so that the opening 62 for holding the body 54 on the relevant push rod 48 is capable. Two laterally spaced apart vertical openings 68 take the upper ends of two tubular injector prongs 70 on. These are sealed in the associated openings 68 by means of sealing rings 72 and are held by nuts 74 held.

In the body 54 channels 75 connect the two prongs close to their

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Ren upper ends 10 with a built in the body 54 valve housing 76. As shown, the valve housing 76 is an upright, composite tubular member 78, the continuous Bore 80 communicates with channel 75 at its lower end.

The lowermost part 82 of the valve housing 76 is internally threaded 84 to receive the externally threaded lower end of a tubular spacer 86. An inner seal is attached between the two parts at 88 and an outer seal at 90. Between the two Seals 88 and 90 have parts 82 and 86 radially spaced from one another all around so that an annular chamber 92 is formed. The through bore 80 widens upward to form a conical valve seat 94. Above the valve seat 94 connect radial bores 96 the continuous Bore 80 with the chamber 92. A line 98 connects the chamber 92 with a hose connector 100.

The middle piece of the valve housing ends in one part at the top 102 internally threaded that receives the externally threaded lower end 104 of an upper piece 106. Between the two A seal is provided at 108 parts.

A valve body 110 is received in the through bore 80 above the valve seat 94 such that it can move back and forth. He knows a conical tip 112, preferably made of a resilient material, such as Hylon, which against the valve seat 94 seals when the valve is closed. The valve body 110 has a metal rod 114 as a valve stem. This pole 114 protrudes upward in the bore 80 and occurs at the upper end through an annular gland nut 116 which seals the rod at 118 to the outside.

A compression coil spring 120 surrounding the rod 114 in the bore 80 engages between a widened head 122

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of the valve body and the lower end of the upper valve housing part 106 to normally put the valve in its closed position to force.

Outside the housing is on the valve stem 114 with a Fastening means 126 a valve stem pusher 124 "attached. An upward force on trigger 124 counteracts the valve body the force of the spring 120 from the valve seat, so that the liquid delivered under pressure through the hose connector 100 through line 98 into chamber 92, through the radial Bores 96 in the through hole 80, then between the Valve body tip 112 and valve seat 94 down and into channels 75, further through radial passages 128 into the two Prongs and in their through bores 130 down and through the radial openings 132, which are barely provided over the massive lowermost tip 134 of the two prongs are, can flow to the outside »

Each body 54 of the injector unit also has a tubular, approximately vertical sleeve 136 for holding a valve actuator, which is attached next to the valve housing. the Sleeve 136 punctures a bearing bush for an actuating rod 138, the lower end 140 of which protrudes below the lower end 142 of the sleeve 136 to contact the ground get. The area 144 near the top of the rod is externally threaded and protrudes over the top 146 of the sleeve 136 in front, where a flange 148 with an internal thread is screwed on. the latter has a flange 150 which protrudes to the side and protrudes into a lateral hat 152 which is attached to the pusher 124 of the valve stem on the outside is. In this way, the valve stem is connected to the actuator in such a way that when the actuator is through the contact of the lower end 142 of the rod 138 is pushed up with the ground, the valve is opened until continued rotation the crankshaft 38 the relevant injector unit is raised so far that the actuating rod 138 is again

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can lower. ¥ how you can see it can be seen by turning the Set this splash 148 relative to the rod 138 and thus also adjust the position of the lower end 142 of the rod 138 to the rest of the injector unit concerned and to the ground, whereby a means is provided to that portion of the vertical stroke cycle for the injector unit in question, during which the associated valve is open and inject, lengthen or shorten the two associated prongs. The sooner a valve opens and the later it is closed, the more liquid is injected and the wider it Injection tape is, the closer it comes to reaching the same depth to the soil surface when the others Pactors are the same.

If the device according to the invention is used, for example, for treating the lawn of a G-olfplate, the tanker truck is used 18 drawn to the edge of the golf course and the treatment liquid contained therein is with the help of the pump 20 through the hose line 14 is pumped to the applicator unit 12 under high pressure. This unit is led across the green area, just like a motorized lawn mower. While the two pronged injector units 52 are lifted off the crankshaft 38 and are lowered, hit the relevant operating rods 138 during the downstroke to the ground and open the associated valves 110 while the relevant Injector tips are located under the lawn.

Each hose connector 100 connects a hose 160 with a manifold 162 attached to the chassis 22. The manifold 162 has an inlet tube 164 attached to its upper end is connected to the pressure hose 14 to of the compressor 20 located on the tank truck 18 with treatment liquid to be fed. The fact that injections can be carried out at high pressure, but the voluminous supply of liquid and the mass and weight of the pressure-applying device at a ratio

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moderately stationary place (the tank truck) housed separately so that they do not have to be dragged around with the applicator unit, the applicator becomes "more agile and" more versatile.

There are all where it is disadvantageous to pass the valves 110 through to actuate the contact of push rods with the ground at 140. In these cases, suitable control cams or the like. be provided, which work from the crankshaft 38 to to cause the pusher 124 to be 'relative to the valve housing 76 to lift when the relevant body 56 due to their attachment to the vertically reciprocating rods 48 after be led down,

Indeed, a training of this type will do the attachment multiple valves 110 and the stepping foot in contact with the ground obsolete, recently preferred. These is described below.

In the Pig. 5-8 a second training is shown to the utilization to illustrate a device for raising and lowering the prongs for the actuation of a flow-distributing valve. This valve receives the supplied, pressurized treatment liquid and routes them one after the other in a repeating pattern to each of several Feed lines leading to the appropriate groups of tines. According to the distribution pattern, only the one receives Group of tines that were being driven into the ground at the moment is the pressurized treatment liquid. In this embodiment, there is not one for each set of tines own valve and also no foot in contact with the ground necessary.

As with the first described embodiment, the second form can be realized the fastest if you use an existing, commercially available machine modified accordingly

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adorns, "for example a Ryan Greensaire Turf Aerator, model WG24-1. This machine has a chassis 210 on on which a four-stroke gasoline engine 212 is mounted. Wheels 214 traveling on the ground are controlled by the engine via a suitable Coupling and a geared drive to drive the machine over the area to be treated, for example a golf course lawn travel. A transverse row of generally vertically oriented bearings 216 is on the chassis appropriate. A rod 218 is slidably received in each bearing 216. A crankshaft 220 extends in the transverse direction between other bearings on the chassis. Your crank parts are pivotable with one of the rods 218 each Connecting rods 222 connected. The engine rotates the crankshaft 220 via a suitable clutch and gearbox that is in is equipped with an endless drive chain 224 in the illustration.

Prior to the modification, the rake had pairs of interchangeable, downward-facing hollow tines mounted on the lower ends of the poles 218. So when the rake is advanced over the area to be treated, the pairs of tines are driven one by one into the lawn and then pulled out again each tine removing a plug of turf from the ground. The special model of the lawn aerator creates 36 holes, each 76 mm deep, ^{in every square foot (929 cm 2) of lawn.} The plugs are typically between about 6 and 16 mm in diameter depending on the size of the hollow prongs used.

To change the lawn aerator, the hollow tines are removed and an injector kit for the treatment liquid is attached to the machine assembled.

The injector kit includes a flow distributing rotary valve 226, an inlet line 228, a plurality of outlet lines 230 and, accordingly, a plurality of liquid injectors 232, each with

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two prongs open. (There are six in the example shown).

The injectors 232 essentially correspond to those in FIG shown with the exception that in the embodiment of the Mg.5-8 the foot 138 and the valve body 110 are omitted and "at 84 a cap is installed so that an open connection between the respective outlet line 230 and the openings 132 the prongs are made.

The outlet lines 230 enter through a support rod 234 ' which they are fastened and which in turn at 236 on the chassis 210 is attached. At their upper ends, the six outlet lines 230 open into corresponding connection pieces 238, which they each connect to one of six outlet ports 240 of the flow-distributing valve 226. The flow distributing one In the example shown, valve 226 has a housing consisting of three parts, which has an inlet part 242, an outlet portion 244 and a tubular spacer 246 comprises. An arm 248 is attached at 250 between the inlet part 242 of the valve housing and the chassis 210, the arm 248 for this purpose serves to hold the flow-distributing valve on the chassis.

Cylindrical sprues 252, 254 on inlet portion 242 and outlet portion 244 of the valve body fit snugly into the two ends of the tubular spacer 246 and O-rings provide the Sealing at 256 and 258.

A radial flange 260 on the outlet portion 244 of the valve housing is provided with a ring of screw holes 262, which with a corresponding number of threaded sockets 264 are aligned in the axially inner end of the inlet portion 242 of the valve housing are. Screws are inserted through the holes 262 and screwed into the threaded holes 264 tightly around the housing to stick together.

The space in the tubular spacer 246, which in the axial direction

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between the sprues 252 and 254 forms a valve chamber 266. An inlet port 268 passes through the inlet portion 242 of the housing and communicates through the gate 252 with the valve chamber 266 is in connection. The six outlet ports 240 extend through the outlet portion 244 of the housing and stand through the sprue 254 with the chamber 266 in connection. At your.connection point with the outside of the housing, all openings 240, 268 are internally threaded, corresponding therewith Connection lines can be connected.

Coaxial with the chamber 266, the outer end of the inlet part is provided with a cylindrical depression 270. At their in In the axial direction of the inner wall or shoulder 272, the recess 270 has a through-hole 274 with a smaller diameter, which leads to valve chamber 266. A stub shaft 276 protrudes a little bit through the through-hole 274 into the chamber 266 into it. The shaft 276 also projects quite a distance from the inlet portion of the housing through the counterbore 270. bearing sets 278, 280, which are received in the recess 270 support shaft 276 for rotation. An O-ring seal 282 between the shaft 276 and the through hole 274 ensures the sealing of the valve chamber 266.

An annular drive yoke is located in the valve chamber 266 by means of screws 286 on the short axial part 288 of the stub shaft 276 284 attached. The drive yoke 284 has two diametrically opposite opposite drive bolts 290 projecting in the axial direction, which protrude towards the sprue 254.

The bolts 290 are slidably received in corresponding openings 292 in the outer edge of a valve body 294. By doing In the illustrated example, the valve body 294 consists of two rigid rings 296 which are pressed against the two sides of a plate 298 made of a smooth plastic, such as polytetrafluoroethylene, are placed. This structure is held together with several rivets 300. The plate 298 has a single eccentric

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Hole 302 which is the same radial distance as the mouths of the six outlet ports 240 into chamber 266.

When the shaft 276 is rotated, the drive rotates;] och 284 the valve body 294 and thereby causes the eccentric hole 302 to be briefly connected to each of the six outlet openings in succession 240 comes to cover. The pressurized treatment liquid, flowing into the valve chamber through inlet port 268 passes through eccentric hole 302 and the Sequentially from each of the outlet ports 240.

A supply line 304 extends between a connection piece 306 with which it is connected to the inlet opening 268, and a fitting 308 attached to the support rod 234. Next to the connector 308 is in the supply line 304 a control valve 310 is installed. Both the supply line 304 and the outlet lines 230 consist, as can be seen, from flexible pressure hoses.

A drive sprocket 312 is mounted on shaft 276 outside the housing of flow distributing valve 226. the Rungs of the sprocket 312 are engaged with the roller chain 224 so that when the applicator is about to be treated Surface is driven and the crankshaft raising and lowering the tines is rotated, the revolving roller chain 224 the Sprocket 312 rotates, thereby actuating valve 226. As a result the pressurized treatment liquid, which is fed into the supply line 304 at the connection piece 308, is used is dispensed in valve 226 and dispensed from six outlet lines 230 in successive doses. The outlet lines 230 stand with the through bores of the pairs of prongs and thus with the nozzles 132 of the respective prong tips in connection.

In use, the connector 308 of the applicator 208 of the second embodiment is connected to a pressure hose 314

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separate source of supply for the treatment liquid, for example a tanker truck 516 connected to the board has a compressor 318 for pumping the liquid through the Hose line 314 under the same pressure as in the example of FIG.

The second embodiment has been modified above as a modification a specific construction of an existing machine described; of course, it can also be modified by modifying it other existing machine designs can be put into practice or manufactured from scratch.

From the above description it is clear that the inventive Injector for liquids for soil treatment fulfills the tasks and advantages mentioned in the introduction. In the frame The invention, which is given by the following claims, can be modified from the examples described.

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Claims (4)

Expectations Injector for liquids for soil cultivation, marked by an applicator (12) with a carriage (210) and with Device parts (214) that keep the chassis at a distance from the floor and the chassis from the floor make it pullable or mobile, several injection prongs (232), which are roughly in a transverse row are arranged and each stand approximately vertically and are provided with a downward pointing tip (134), a drive (216-220) that controls each injection prong on the chassis for cyclic reciprocation between a upper limit position, in which the tip of the tine from the surface of the earth is lifted, and a lower limit position, in which the tip of the tine is driven under the surface of the earth, holds, a nozzle assembly (132) next to each tine tip for dispensing the treatment liquid into the ground when the Tine tip is below the surface, a liquid channel (150) through each tine to its nozzle arrangement, a flow distributing valve (226) attached to the chassis and a housing (242-246) with an inlet (268) and several outlets (240) and with a valve body (294) which is movably mounted in the valve housing in such a way that it can be brought into several positions in which it successively briefly connects the valve inlet to each of the outlets, a reservoir (316) for the treatment liquid, which is provided apart from the applicator, flexible pressure-tight tubing (314, 304) connecting the reservoir to the inlet of the flow-distributing valve (226) connects, a pump (318) for drawing treatment liquid from the reservoir and feeding the liquid under pressure 709821/0949 ORlGiNAL INSPECTED through, the hose line into the flow-distributing valve, a plurality of outlet conduits (230) connecting each valve outlet (240) with the fluid passage through the prongs of at least one prong, but less than all of the prongs, a valve actuator (276, 284, 290) that drives the drive with the valve body connects in such a way that the valve body in response to the cyclical reciprocating movement of the Injection prongs is moved into the aforementioned positions, the outlet lines (230), which are connected to the channels of the Injection prongs connected to the valve are opened in such a pattern that each prong is then treating fluid for injection into the ground when it is below the surface of the ground. 2. Injector according to claim 1, characterized in that the drive (216-220) has the prongs in pairs for a common Reciprocating movement and that each outlet line (230) supports the associated valve outlet (240) with both prongs a pair of tines connects. 3. Injector according to claim 1 or 2, characterized in that the valve housing (242-246) forms a valve chamber (266) into which the valve inlet (268) opens and with which each Valve outlet (240) is separately in communication that the valve body (294) in the valve chamber between the points where the valve inlet opens and where the valve outlets are located, and that in the valve body one Opening (302) is arranged such that it with its one end with the point where the valve inlet opens into Connection is and at its other end briefly in succession with the valve outlets during the movement of the valve body is brought into communication from the valve chamber o 4. Injector according to claim 3 _5, characterized in that the 709821/0949 Valve chamber (266) and the valve body (2S4) a circular Have cross-section that a shaft (276) is provided as part of the valve actuator, which is attached to the valve body is attached and protrudes from the valve housing, and that the valve plate is constructed such that it the valve body rotates over the shaft to the movement of the valve body in the various positions. Injector according to Claim 4, characterized in that the drive has a rotating energy source (121) which is attached to the chassis (210) and a circumferential endless drive chain (224) driven by the power source as well as a crankshaft (220) which is rotatably mounted on the chassis and has several cranked crank parts, and coupled to the drive chain such that it is rotated by the rotating power source via the drive chain is, wherein drive elements (222, 218, 216) connect the crank parts concerned with the prongs in such a way that at the rotation of the crankshaft causes the tines to move back and forth, and that the valve actuator has a sprocket (312), which sits on the shaft (276) of the valve actuator and is in engagement with the drive chain (224). 709821/0949