SU1106993A1 - Metering pump - Google Patents

Abstract

A LIQUID DISPENSER containing a container for dispensed liquid with an outlet channel made in the form of a needle of a medical syringe, communicated with the container through an air chamber valve containing a spring-loaded piston with a rod passed through the chamber cavity, and a node for setting the dose, characterized in that , in order to expand the functionality by providing microdose, in it the valve is made in the form of an elastic tube, one end of which is tightly attached to the air chamber, and in the free end ubki to full contact with the therein mounted vkladsh flat trapezoidal shape, wherein the piston rod is formed with a through channel. (L

Description

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CO with The invention relates to a means of volumetric dosing of liquids and can be used in various fields of technology. A dispenser of small portions of liquid is known, comprising a housing, a spool, a plunger, a regulator, a spring, and a feeder that injects a dispensed liquid. 11. Also known is a syringe for sampling the injection of liquid samples into a gas chromatograph containing a container for dispensed liquid with a code channel that is shaped like a needle of a medical syringe, communicated with the container through an air chamber containing a spring-loaded piston with a rod passed through the lid of the chamber, and the setpoint of the set-up raze 121, A disadvantage of the known devices are their limited capabilities, which do not allow the microdrops of the liquid to be made. The purpose of the invention is to enhance the functionality by providing micro doses. This goal is achieved by the fact that in a liquid dispenser containing a container for dispensed liquid with an outlet channel, expelled in the form of a needle of a medical syringe, connected to the container through a valve, into a stuffy chamber, in which a spring-loaded piston is placed with a rod passed through the valve of the IHM, and the knot of setting the dose, the valve is made in the form of an elastic tube, one end of which is hermetically attached to the air chamber, and a flat contour of the trapezoid is installed at the free end of the tube until it fully contacts it. forms in. this in the piston with the rod is executed through the channel. FIG. 1 shows a dispenser, a general view, FIG. 2 - the same, longitudinal section; in fig. 3 longitudinal cut through the valve. 3 2 The liquid dispenser contains a container 1 for the dispensed liquid with an outlet channel made in the form of a needle 2 of a med-syringe, communicated with the container 1 through valve 3, an air chamber A, in which a spring-loaded piston 5 with a rod 6, passed through the crest of chamber 4, and a node 7 task given dose. The valve 3 is made in the form of an elastic tube 8, one end of which is hermetically attached to the chamber 4, and a flat insert of a trapezoidal shape is installed in the free end of the tube 8 until it comes in full contact. A through channel is made in the piston 5 and the rod 6 the atmosphere. On the outer surface of chamber 4, a scale of 10 is applied. Capacity 1 and chamber 4 are interconnected by a threaded connection. The operation of the dispenser proceeds as follows. From the container 1, the chamber 4 is unscrewed and the dispensed liquid is poured into the container 1. Then the container 1 is connected to the chamber 4 and, turning the node 7 on a scale of 10, set the value of the dose of liquid. The operator presses his finger on the rod 6, thereby blocking the through channel, and moves down the rod 6, which drives the piston 5. The latter, through valve 3, displaces a certain amount of air from chamber 4 to container 1. As a result, the specified micro dose of fluid will be issued to the consumer. The micro dose will be completed when the upper cut of the rod 6 is aligned with the surface of the node 7. The operator removes a finger from the rod 6, the chamber 4 is connected to the atmosphere, and the spring moves the piston 5 with the rod 6 to its original position. The dispenser is ready for the next micro-dose of liquid. The use of the invention provides liquid dosing with micro doses, the possible value of each of KOTOpbtx lies in a wide range.

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Claims (1)

A LIQUID DISPENSER containing a container for the dosed liquid with an outlet channel made in the form of a needle of a medical syringe, an air chamber in communication with the container through the valve, in which a spring-loaded piston with a rod passed through the chamber cover is placed, and a unit for setting the dispensed dose, characterized in that, in order to expand functionality by providing microdoses, the valve is made in it in the form of an elastic tube, one end of which is hermetically connected to the air chamber, and to the free end of the tube In full contact with it, a flat trapezoidal insert is installed, and a through channel is made in the piston with the rod. 1 1106993