FR2859651A1 - Spraying apparatus e.g. sprayer, draining device for agricultural field, has suction pipe equipped at bottom most part with tee including two orifices that correspond to normal system of sprayer, and check valve provided at towering point - Google Patents

Abstract

The device has a pump with an outlet that is placed on a side below the pump. A suction pipe from a tank to the pump is equipped at the bottom most part (B) with a tee. A check valve (12) is provided at a towering point (C). The tee has two orifices (8, 9) that correspond to a normal system of a sprayer. An orifice (10) having a lesser diameter connects a small pipe (11) parallel to a portion of the suction pipe.

Description

2859651 -1-

  The present invention relates to devices for arranging the sprayer so as to obtain total emptying of the spray apparatus: the agitator, the tank, the filter, the pump, the piping, the regulator, the anti-drip, the jets.

  S The resulting benefits are as follows: There is less pollution when rinsing the stationary machine since there is no longer a bottom of gruel at the end of the construction site.

  The device according to the invention makes it possible to eliminate the risk of accidental mixing with a bottom of a different product slurry, which can cause on the one hand an antagonism between several active substances and on the other hand a phyto-toxicity on the plants.

  The device according to the invention makes it possible to remedy the risk of winter freezing of the organs of the sprayer, thus preventing the user from purging the apparatus or incorporating a product intended for this purpose.

  The device of the invention thus facilitates the work of the user with a significant time saving at the beginning and end of the site.

  The device of the invention allows to integrate into an environmental charter because it allows from the start of spraying an optimum concentration of the slurry at the end of each boom section, until the complete emptying of the sprayer in the end of use which represents a significant economic gain on the whole farm. Because not only the product contained in the bottom of the tank is used correctly, which allows an increase in spreading area with equivalent active substance concentration. But in addition, the elimination of these highly polluting residues, in respect of the environment has a significant cost for the user.

  The device according to the invention makes the use of the sprayer less polluting, so it will be more easily marketable.

  The invention will be better understood on reading the detailed description given with reference to the drawings, of which the following is the following: FIG. 10 is an overview of various elements of a sprayer comprising the various aspects of the invention.

  Figures let 2 represent the agitator. Figure 3 depicts the tee.

  Figure 4 details washers. Figure 5 shows examples of filters. Figure 6 is a modified diaphragm pump. Fig.6 I is a modified piston pump. Figure 6 II is a modified centrifugal pump. Figure 6 III is a set of valves allowing several functions. Figure 7 shows the regulator and the dispenser. Figure 8 shows the detail of the regulator. Figure 9 depicts anti-gout.

  The device according to the invention is essentially characterized in that the output of the pump (30) is necessarily placed below or on a bottom side of the pump instead of being above as in the usual installations. .

  For this, depending on the characteristics of the pump, it is sometimes possible to change the position or assembly to place the output below. Some pump whose exit will be on the side once turned could receive a hole (10) and be equipped with a small pipe (11) to remove the remaining liquid in its low asperities. See fig.6 fig.6 I fig. 6 I I. The device includes this small pipe, it is useful to empty the porridge of the low points of the usual circuit such as: the curves of pipes, the filter, the pump, and according to the particular modes of realization of the various organs of the sprayer , the low points of the piping are provided with a tee whose two orifices correspond to the normal circuit of the sprayer and whose third orifice, of smaller diameter, connects a small pipe parallel to the portion considered and ends at the culminating point of this portion behind a non-return valve with low restraint.

  The invention is composed of a tee (7) at the low point and a valve with low retention at the culmination of the circuit portion concerned. In Figure 3, the tee (7) is in the inverted position and it can be molded funnel configuration of which two orifices (8) and (9) are of a large diameter and correspond to the normal circuit of the sprayer. The third hole (10) of smaller diameter connects a small pipe (11) parallel to the portion considered and completed at the culmination of this portion behind a valve (12), which allows the pump to empty the low point by a inlet (13) behind the valve (12) with low restraint. The low power spring (14) stops the flow of air when the slurry volume becomes insufficient to keep the valve open. The passage thus obstructed, the speed of the air flow will increase in the small pipe (11) to maintain the flow rate to the pump, causing the evacuation of all the liquid from the portion concerned. Alternatively the valve (12) may be a simple check valve, if it is placed so as to allow the flow of liquid on each side of the valve, without holding slurry in its asperities.

  According to an interesting development of the invention, the positioning of the membrane provided with a needle in the anti-drop is horizontal. The needle whose function is to close the anti-drop when stopping the spray, is directed downwards to allow the total flow of the slurry.

  Figure 9 describes this device: The pipe section (21) is pierced below. The anti-drip (22) has its entrance slope towards its center. The membrane (23) is horizontal and is provided with a needle (24) obstructing the bottom of the anti-drop. The outlet pipe (25) is also sloping towards the outlet orifice itself below. It is desirable to have a plug (26) that advances to the hole of the multi-jet for better drip of the liquid.

  In the pressure regulator, the inlet orifice is preferably located at a level lower than that of the tank return orifice. This arrangement makes it possible to obtain the longest regulation at the end of the treatment application.

  Figure 7 describes the pressure regulator which is the highest element of the device. The situation of the orifices is important. The orifice of the inlet (15) is placed at a lower level than the tank return orifice (16) which is therefore the first to be filled with liquid.

  It is advisable to leave height above this outlet to create an air bell, but without excessive volume for the problem of under-dosing or over-dosing when the speed of advancement varies. The pressure sensor (19) can be installed at the top of the regulator or at other locations depending on the requirements of the regulator. It is possible to install a membrane (28) to have an air bell at the top of the regulator. For devices requiring a volumetric sensor (32), it can be installed between the regulator and the distributor. The sensor thus measures the sprayed slurry in real time. A second safety valve (33) is positioned on the regulator, resulting in the tubing return piping. The valve (34) is used for filling when the pump is used.

  According to another interesting development of the invention, the dispenser comprises a bell, whose bottom is conical with the tip upwards. The outlet orifices being disposed at the periphery and at the bottom on the side of this bell.

  This device described in Figure 7 is characterized in that on the distributor, the outlets (17) where are installed motorized valves (27) are peripherally. The dispenser has the cone-shaped molded bottom (18) whose tip is upward.

  The device according to the invention may comprise an agitator composed of one or more floats, integral with a tube provided with one or more arms, which rotate around a fixed pipe, one of whose openings at the bottom is closed by the floating agitator plug in position. high. And the other of the openings feeds the arm or arms to agitate all the slurry.

  When the tank is at the end of emptying, the floating stirrer composed of the cap has gone down. The openings at the top of the fixed pipe have shifted from those of the arm or arms. The latter being no longer supplied, the agitator stops rotating. The liquid drips, therefore, through the opening of the bottom closer to the port of the suction pipe of the pump.

  The stirrer described in Figures 1 and 2 is made to shorten the time of the total emptying of the tank.

  Figure 1 shows the agitator in operating position in the tank containing slurry. The agitator (3) is composed of one or more floats (2) integral with a tube and it is also provided with one or more arms (4), which rotate around a fixed pipe (5). one of the openings (0) at the bottom of the fixed pipe (5) is closed by the plug (6) of the floating agitator in the high position and the other of the openings (01) feeds the arm or arms for agitating the assembly porridge.

  Figure 2 shows the agitator in the operating position when the tank is at the end of emptying. The floating stirrer (3) composed of the plug (6) has descended. The openings (01) at the top of the fixed pipe (5) are offset from that of the arm or arms (4). The latter being no longer supplied, the agitator stops rotating. The liquid drips, therefore, through the opening (0) of the bottom closer to the port of the suction pipe of the pump.

  The tank return (16) is provided with an optional air inlet, which opens when the regulation has closed. Thus the liquid can flow by gravity. (Figure 8). A large diameter pipe can suppress the pipette effect.

  The port of the suction pipe of the pump is placed on one of the outlets of a three-way valve. The latter is in place of the drain plug of the tank. To empty the tank, the liquid can exit the opposite of the suction. According to a variant not shown, the three-way valve may be an inverted tee whose one of the orifices has a drain plug. According to particular embodiments or certain attachment of the three-way valve involves a washer at the bottom of the tank, this washer could retain liquid. It is imperative in this case to create passages. The perspective drawings in Figure 4 show the two possible cases. Either we cut portions in this washer (D), even if we place a second one on top to reinforce. Either a bridge is made in the washer (A).

  According to particular embodiments, (FIG. 5), the filters are drawn and positioned so as to allow the total flow of the slurry, even if impurities are in the mesh of the sieve.

  It is possible to use different types of filters if the dripping of the liquid is total at their exit.

  The device according to the invention can be completed by a valve plant, which appears in FIG. 6 III and which makes it possible to obtain several functions of the treatment apparatus such as: The filling of the tank by hydro-siphon.

  A pressure of water to wash the cans of treatment.

  The aspiration of the tank of incorporation of the products of treatment.

  The valve of the safety valve in case of excessive pressure. The emptying of the lava can by hydro-siphon.

  This set consists of a three-position main valve that acts as a hydro-siphon for filling, incorporation and operation. It consists of a valve (35) in the form of a tube whose bottom has an orifice (38) to form a jet. The valve has a washer (36) whose periphery has a seal. The assembly slides in a tube (31) having openings. The high position is that of the spray.

  In the low position the valve (35) has its washer engaged in the tube (31). The pressure of the liquid is then obliged to pass through its jet; It operates the hydro-siphon. When the washer (36) of the valve is below the orifice (37) of the drum washer, there is pressure for the use of the drum washer. The valve in the intermediate position has its washer above the hole (37) corresponding to the drum washer, the hydrosiphon causes suction to empty the pipe of the drum washer.

  It is essential to place the motorized valves (27) so as not to hold liquid. The valve inlet is positioned horizontally or above the valve. And the output of the motorized valve is located below or on the side of the valve.

  Similarly, the piping supplying the sections of the boom of the sprayer is preferably fixed in slope following the high bar of the frame. The portion of section that is cut by a hinge can receive the mounting of a Y placed upside down. A support plate can be installed horizontally from the hinge to keep the hose at the same level as the boom section.

  These devices according to the invention allow the total emptying of the apparatus. spray. They allow a saving of time and an ease of work as well as a saving for the user of this apparatus while removing the pollution of the funds of vats. They are particularly intended for agriculture

Claims (10)

  1) Total draining device for the sprayer comprising a tank, a filter, a pump, a pressure regulator, a distributor, anti-droplets, and a connecting pipe, characterized in that the pump outlet ( 30) is placed below or on one side at the bottom of the pump (Figure 6, Figure 6I, Figure 6II) 2) Device according to claim 1 characterized in that the suction pipe from the tank to the pump (Figure 3) is provided at the lowest point (B) of a tee (7), and an anti valve. -retour (12) at the highest point (C), the tee (7) having two orifices (8) and (9) which correspond to the normal circuit of the sprayer and whose third orifice (10), of smaller diameter, connects a small pipe (11) parallel to the portion of the suction pipe which leads to the point (13) behind the valve (12) containing a spring (14) low retention.   3) Device according to claim 1 characterized in that the delivery pipe of the pump to the regulator (Figure 3) is provided at the lowest point (B) of a tee (7) and a check valve (12) at the highest point (C), the tee having two orifices (8) and (9) which correspond to the normal circuit of the sprayer and whose third orifice (10), of smaller diameter, connects a small pipe (11); ) parallel to the portion of the discharge pipe which terminates at the point (13) behind the non-return valve (12) at the highest point (C) containing a low-holding spring (14).   4) Device according to claim 1 characterized in that it comprises (Figure 6 and Figure 3), an orifice (10) of smaller diameter than the output of the pump (30), this orifice (10) is installed on the pump at the low point (B) to drain the pump from the rest of the slurry, at this orifice (10) connects a small pipe (11) parallel to the portion of the discharge pipe which ends at the point (13) behind the non-return valve (12) at the highest point (C) containing a spring (14) with low retention.   5) Device according to claim 1 characterized in that it comprises (Figure 5 and Figure 3), an orifice (10) of smaller diameter than the outlet of the filter, this orifice (10) is installed on the filter in point low (B) to empty the rest of the slurry, to this orifice (10) connects a small pipe (11) parallel to the portion of the suction pipe which ends at the point (13) behind the valve (12) containing a spring (14) with low retention.   6) Device according to any one of the preceding claims, characterized in that the anti-drip (22) (Figure 9) has its membrane (23) positioned horizontally, it is provided with a needle (24) whose tip is directed downwards, the anti-drip (22) is fixed to the pipework (21), its arrival pipe is sloping towards its center, and the outlet pipe (25) is sloping towards the jet ( 25a), the plug (26) advances in the conduit (25) to the outlet orifice pierced below this conduit.   7) Device according to any one of the preceding claims, characterized in that on the entire pressure regulator (Figure 7), the inlet orifice (15) is located at a level below that of the orifice return to the tank (16).   8) Device according to any one of the preceding claims, characterized in that the distributor (Figure 9) comprises a bell (18a) whose bottom (18) is in cone with the tip upwards, the outlet orifices (19). ) being arranged at the periphery and at the bottom on the side of this bell.   9) Device according to any one of the preceding claims, characterized in that it comprises (Figure 1) a floating stirrer (3) consisting of one or more floats (2) integral with the tube, it is provided with one or several arms (4) and a plug (6), the assembly rotates and floats around a fixed pipe (5), one of the openings (0) at the bottom is closed by the plug (6) of the floating agitator (3), the latter in high position feeds the openings (01) of the arm or arms (4), in fm drain (Figure 2) of the tank (1) the floating stirrer (3) composed of plug (6) goes down, .the openings (01) at the top of the fixed pipe (5) are offset from those of the arm or arms (4), the latter being no longer supplied with power, the floating stirrer (3) stops to turn and the liquid drips through the opening (0) of the bottom closer to the port of the suction pipe of the pump.   10) Device according to any one of the preceding claims characterized in that it comprises (Figure 6 III) a three-position valve composed of a valve (35) in the form of a tube whose bottom has an orifice (38) to form a jet, this valve (35) has a washer (36) whose periphery can receive a seal in addition, the assembly slides in a tube (31) having an opening (37) corresponding to the piping of the drum washer, the eccentric lever (39) makes it possible to maneuver the assembly: washer and valve.