SU870948A1 - Metering pump for liquids - Google Patents

Description

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This invention relates to liquid dispensers, preferably nutrient solutions, when introduced into the feed mixture.

A liquid dispenser is known, which includes a housing with an inlet and outlet nozzles and with a plug installed in it with a flow channel, the diametrically opposite ends of which pass into large cavities along the cross section - pockets .1.

This dispenser does not provide its self-cleaning by turning the plug 180, which deteriorates the conditions of labor and safety.

Also known dispenser dp liquid, comprising a housing with a lid and with inlet and outlet nozzles, inside of which is installed a rotary dispensing element 2j.

The disadvantage of this dispenser is complicated operation, since it does not provide automatic control over the process.

fluid outflow, allowing the operator to accurately determine the clogging moment of the metering element.

The aim of the invention is to simplify operation by providing automatic control over the process of fluid flow.

Claims (2)

This is achieved by the fact that the metering element is made in the form of a disk with diametrically opposite to its center with respect to its inlet and outlet nozzles, with an ester in the valve, an overflow channel communicating the said nozzles between them and an orifice located above the overflow channel, and the dispenser has a pressure sensor fixed on the lid and a diaphragm blocking the orifice and interacting with the pressure sensor. In addition, the disk is made with additional pairs of inlet and outlet nozzles of various transverse crossings, and one of the output nozzles is plugged. The ends of the inlet and outlet nozzles facing the corresponding nozzles are made with spherical expansion. Fig. 1 schematically shows a dispenser for a liquid, a cross-section} in Fig. 2 - section A-A .1. The dispenser includes a housing 1 with a lid 2, equipped with an inlet nozzle 3 and an outlet nozzle 4. Inside the case there is a rotary dispensing element made in the form of a disk 5 with a shank 6 pushed against the case by a spring 7. The disk has an inlet nozzle diametrically opposite to its center 8 and the output jet 9 have the same cross-section, In the cap 2 there is an overflow channel 10 connecting the nozzles 8 and 9 and the hole 11 located above the overflow channel, which is blocked by the diaphragm 12. At the end ke pressure sensor 13 is fastened, which interacts with the diaphragm and incorporated. an electric circuit having a light signal, for example, a light bulb 14. The drive has additional pairs 15 and 16 of the input and output jets of different cross section, as well as one input jet 17, corresponding to which the output jet is muffled. The ends of the inlet and outlet nozzles facing the corresponding nozzles are made with spherical expansion 18. When the dispenser is operating, the nutrient solution passes through the inlet nozzle 3, is dosed by the nozzle 8 and through the bypass channel 10, the nozzle 9 and the outlet nozzle 4 enters the feed mixer or another consumer. The pressure of the nutrient solution in channel 10 is almost constant and is determined by the position of the diaphragm 12. During the operation of the dispenser, mechanical impurities contained in the nutrient solution are deposited in front of the nozzle 8 in a spherical expansion 18 reducing the pressure in the channel 10, This pressure corresponding to partial or complete blockage of the nozzle 8, transfers the diaphragm 12 and senses. with the sensor 13, which transmits an electric pulse to the light bulb 14, which indicates the need to rotate the disk to change the 4 This places the nozzles 8 and 9 to provide a self-cleaning zhik lehr 8 fresh nutrient solution. The change in the dose of the nutrient solution is carried out by placing one of the additional pairs of nozzles with a different cross section under the pipes Z. and 4. Dp of stopping the supply of the nutrient solution under the inlet nozzle 3, install the jet 17, while spherical expansion without the jet is placed under the outlet nozzle. Due to such a dispenser implementation, the process of the expiration process is automatically controlled and its operation is greatly simplified. Claims 1. A liquid dispenser, preferably nutrient solutions, when introduced into the feed mixture, comprising a housing with a cylinder and an inlet and outlet nozzles, inside of which a rotatable metering element is installed, characterized in that, in order to simplify operation by ensuring automatic control of the outflow liquid, the metering element is made in the form of a disk with a diametrically opposite diametrically opposite to its center, the inlet and outlet nozzles, while the lid is made usknoy channel soobschayuischy between a called jets ,, and an opening arranged on the bypass passage and the dispenser is provided with a pressure sensor attached to the krsh1ke, and the diaphragm, which opening is blocked krsh1ki and interacting with a pressure sensor. 2. A dispenser according to claim 1, characterized in that the disk is made with additional pairs of inlet and outlet nozzles of different cross section, and one of the exit nozzles is muffled. 3. A dispenser according to Claim G, characterized in that the ends of the inlet and outlet nozzles facing the corresponding nozzles are made with spherical expansion. Sources of information taken into account during the examination 1. USSR author's certificate 2853, cl. F 16 K 11/02, 1925. 2. Authors certificate of the USSR 541063, cl. A 01 C 23/00, 1974. (prototype).