RU2001024C1 - Fluid feed metering device - Google Patents

Description

The invention relates to a liquid transfusion technique and can be used, for example, for irrigation in greenhouses.

A device for dispensing a liquid is known, consisting of a supply tank and in communication with it via a pipe located in its lower part of the device for measuring the dose.

The complexity of the design and low metering accuracy is a disadvantage of this device.

The closest in technical essence to the proposed one is a device for dosed supply of liquid, consisting of a supply tank and connected with it via a pipe located in the lower part of the device for measuring the dose, which contains a drain pipe pivotally attached to the pipe at one end and connected with its free end, a cable thrown over the block, on the end of which a counterweight is fixed.

The disadvantage of this device is the low metering accuracy, since the movement of the pipe is unstable during its movement from the extreme points.

An object of the invention is to increase the accuracy of dosing.

The goal is achieved in that a device for metered supply of fluid, consisting of a supply tank and communicating with it through a pipe located in its lower part, a device for measuring the dose, which includes a drain pipe hinged on one pipe and connected to its free end The cable thrown over the block, at the end of which a counterweight is fixed, additionally contains two magnets, rigidly mounted respectively at the lower and upper points of the counterweight, made o of magnetic material, with the possibility of magnetic interaction with the latter.

In FIG. 1 shows the proposed device; in FIG. 2 - the same top view (magnets not shown).

The device consists of a supply tank 1 with a pipe 2, a device for measuring the dose, including a drain pipe 3 pivotally mounted on the pipe 2, the free end of which is connected via a cable 4 through a block 5 to a counterweight 6, a stop 7 and magnets 8 and 9, which are rigidly mounted respectively in the lower and upper points of the counterweight 6 made of magnetic material, with the possibility of magnetic interaction

with the latter.

The device operates as follows.

The fluid entering the supply tank 1 fills it through the nozzle

2 enters the drain pipe 3. The free end of which, under the action of the counterweight 6, is in the upper position until it stops 7

Liquid filling the drain pipe 3,

its mass draws the counterweight and the forces of magnetic interaction between the counterweight 6 and the magnet 8 and accelerates to a horizontal position due to the removal of the interaction between the counterweight 6 and the magnet 8 and the provision of the magnetic interaction between the counterweight 6 and the magnet 9. The water drains at a speed depending on the internal the diameter of the pipe 3 and the pipe 2. The drain pipe 3, freed from the liquid, is returned by the counterweight 6 to the stop 7 to its original position, while the pipe returns faster due to the magnetic interaction between

counterbalance 6 and magnet 9 and providing magnetic interaction between the counterweight 6 and magnet 8, which ensures high metering accuracy.

(56) Copyright certificate of the USSR No. 1648895. cl. B 67 D 5/02. 1991.

Claims (1)

The claims DEVICE FOR HYDRAULIC FOR DOSED FLUID FEEDING A device for dispensing a fluid supply, consisting of a supply tank and connected to it by means of a nozzle located in its lower part, a metering device, including an oil pipe pivotally attached to the nozzle at one end and connected to its free end thrown over the block, a cable, on the end of which a counterweight is fixed, characterized in that it is provided with two magnets rigidly fastened respectively at the upper and lower points of movement of the counterweight, the latter being made of magnetic material for alternating interaction with the magnets . FIG. Z