CS264776B1 - Stabilizer of spray pressure for liquid fertilizer application - Google Patents

Abstract

Remote spray pressure adjustment a at the same time achieving the set independence pressure on the engine speed of applicators allows pressure stabilizer spraying. Spray pressure stabilizer consists of a stabilizer body, separating diaphragms, support plates with cone and housing caps with a pressure outlet air. Spray liquid protruding from the pressure source through the inlet pipe into the stabilizer body where it hits support plates, according to the distribution cone reverses the flow direction by the alpha angle and flows out openings in the conical surface of the stabilizer body a star stream into the spray tank, thereby causing a uniform content swirl tanks. Pressure stabilization is caused by adjusting the distance H of the support plate from the contact surface of the stabilizer body. Distance is determined by force alignment effects on the membrane from the spray side a from the side of the air whose pressure is regulated the pressure reducing valve from the driver's seat. Said the stabilizer can be used in all types liquid fertilizer applicators, including suspension fertilizers preparations, for setting and stabilizing spray pressure.

Description

The present invention relates to a spray stabilizer for liquid fertilizer applicators.

In present-day liquid fertilizer applicators, the setting of the pressures in the spray distribution is most often done by a throttle valve or a flap operated either manually or remotely by means of an electric input actuator. When manually adjusting the pressure, two pressure adjusters are required or the pressure spray line must be installed in the driver's seat. The spray pressure is determined not only by adjusting the control valve, but also by changing the speed of the fluid pressure source (usually a centrifugal or piston pump). This speed change occurs on machines that have a pressure source drive derived from the applicator engine speed, which also provides ground speed: When the ground speed is reduced (or increased) when the gear is engaged, the engine speed is reduced (increased) and hence Reduce (increase) the speed of the pressure source, resulting in a decrease (increase) in the flow rate of the pump and at the same time the pressure of the liquid in the spray line from the initially set value. The above-mentioned pressure fluctuation in the spray manifold occurs in those machines having a pressure source driven by an applicator motor and with a hydraulic or mechanical transmission. The use of actuators for adjusting the flap or control valve allows remote control of the spray pressure, but the devices used are relatively complex, made of anti-corrosion alloys and do not have a stabilizing effect on the pressure in the applicator manifold.

The above mentioned drawbacks are eliminated by the spray stabilizer of the liquid healing applicators according to the invention, which is characterized in that in the spray tank there is fixed the stabilizer base consisting of a body whose conical part has at least one opening whose axis makes angle alpha with the axis of the body 0 to 90 °. In its lower part, the stabilizer body is provided with a bearing surface on which a diaphragm reinforced by a backing plate is attached to the diaphragm by means of a screw connection with a deflecting cone, which abuts the stabilizer body by means of a cover screwed to the stabilizer body. An adjustable air pressure supply from the pressure regulator via an air duct opens into the space between the diaphragm and the lid.

The stabilizing effect is achieved by adjusting a certain distance between the diaphragm support plate and the support surface of the stabilizer body. The size of this gap is determined by the position of the diaphragm while balancing the force effect on the one hand from the spray side and from the controllable air pressure side. in

The spray stabilizer of the liquid fertilizer applicators according to the invention allows remote control, by means of air pressure, of the amount of liquid pressure in the spray distribution system while stabilizing it. The use of the stabilizer described above eliminates the direct dependence of the spraying pressure on the speed of the applicator internal combustion engine, which makes it possible to realize an even application of liquid fertilizers. chemical plant protection products. The pressure set by the applicator operator at the start of spraying is automatically maintained at the same value, both when the engine speed is decreasing and the engine speed rises within the operating mode of the machine. By positioning the stabilizer in the spray tank, the energy of the liquid that has not been used for spraying is used to vigorously stir the contents of the tank evenly through a star-shaped liquid stream.

The attached drawing schematically shows an embodiment of the stabilizer, wherein in Fig. 1 the stabilizer is in section and Fig. 2 is a plan view of the stabilizer inside the spray tank.

In the spray tank 1, a tube 2 is inserted into the spray tank 1, representing the inflow of liquid into the stabilizer body 3, which is screwed onto the tube. The conical outer surface of the stabilizer body 3 are arranged outflow openings membrane 2 · 2 »to which by a screw 11 and a rectifying cone 13 bolted to the support plate .10., Is by the lid 2 ^{and the} bolted joints secured to the body of the stabilizer 2 · The membrane separates the two 17 with adjustable air pressure from the spray area flowing through the apertures 5 into the spray tank 1. Air is introduced into the space via a pressure line 15 from a pressure reducing valve 14.

The liquid enters the stabilizer body 3 through a pipe 2. In the area of the bearing surface 6, it changes the flow direction according to the support plate 10 by an angle α and flows through the outlets 2 with a star current into the spray tank 2 and thus intensively mix the applied substance. The spray pressure stabilization utilizes the pressure change dependence on the gas volume change in the enclosure. If, for operational reasons, the speed of the internal combustion engine from which the spray pump drive is derived is reduced (or increased), the flow of liquid through the pump is reduced (increased), and the force effect of the liquid flow on the membrane separating the enclosure filled with air under preset pressure from flowing liquid compartment. The equilibrium state of the forces acting on the diaphragm 2 determines its distances H from the bearing surface 6 and hence the resistance that the stabilizer flows through the liquid.

The pressure stabilizer for spray distribution is of simple construction, made of plastics using modern technology without the use of anticorrosive alloys with minimal labor.

The pressure stabilizer according to the invention can be used in all current liquid fertilizer applicators which utilize one engine both for travel and for propulsion of a pressure source, for remote adjustment of the amount of pressure while stabilizing it at the same time.

Claims (1)

OBJECT OF INVENTION Spray pressure stabilizer for liquid fertilizer applicators, characterized in that the inlet tank (1) has a fixed inlet pipe (2) onto which the stabilizer body (3) is screwed, the conical part (4) of which has at least one opening (5) wherein the axis of the holes (5) forms an angle (alpha) of 0 to 90 ° with the axis of the body of the stabilizer (3), which is provided at its bottom with a bearing surface (6) and a bearing surface (7) on which the membrane (8) provided with a backing plate (10) attached by means of a screw connection (11), a washer (12) and a deflection cone (13) to the diaphragm (8) adjacent to the stabilizer body (3) by the body cover (9) bolted to the stabilizer body (3) by means of a screw connection (16), into whose bottom and thus into the space closed between the diaphragm and the housing cover (9), there is an adjustable air pressure conduit (15) from the pressure reducer (14).