SU112499A1 - Liquid dispenser - Google Patents

Description

It is known to measure various corrosive liquids in industry with the help of taps or valves installed directly on pipelines. The service life of such cranes, when the frequency of dosing is large, is usually very low.

The proposed dispenser differs from the known ones in that it, without shut-off valves on liquid lines, allows the process of dispensing aggressive liquids automatically.

FIG. 1 shows the basic scheme of the dispenser; in fig. 2 is an electrical circuit for automatic dispenser for filling tanks on the conveyor.

An automatic tapless metering device for filling, for example an electrolyte, consists of a pressure tank /, a measuring device 2, and pipelines 3 to 4 to the automatic control equipment. The dispenser works as follows. When the capacitor is supplied to the place of electrolyte filling, the contact / C is thereby made and a circuit is created on the winding of the IP relay with help, and the lead or carbon electrode E, which is located in the dipstick 2.

Contact 1P-1 blocks the contact Ki, and the second contact 1P-2 creates a circuit on the coil of the vacuum-air valve HVC connected by a thin rubber hose to the pipe 4. In this pipeline, a vacuum from the low-pressure vacuum pump is created and the electrolyte from the meter is sucked into the pipeline through the upper elbow, and the electrolyte in the lower siphon as far as it rises. The evacuation is stopped after the level in the measuring device 2 is lowered and the circuit between electrode E2 and electrode E is opened. Stack by gravity, the electrolyte opens the electrode Eh. connected to the pipeline 4. Air under a little

No. 112499

pressure enters the upper bend of conduit 4 and breaks the electrolyte jet — priming stops.

The ZR-2 contact of the ZR relay creates a circuit on the coil of the vacuum valve IVK connected to the pipeline 3. Air is pumped out from the pipeline 3. The electrolyte from the pressure tank / and a certain amount of electrolyte remaining in the measuring device fills the pipeline 5. After the electrolyte closes the electrode E, a circuit is created on the winding of the relay -P, contact- P- interrupts the circuit of the IHC vacuum valve coil. and the evacuation is stopped. By this time, the electrolyte level in the upper elbow of the pipeline 3 is lower than the level in the pressure tank / and the electrolyte begins to flow by gravity into the measuring device until the electrolyte level in the meter reaches the electrode E. contact 2P-2 creates, in turn, a circuit on the winding of the air valve VVZ, connected by a thin rubber hose to the upper bend of the pipeline 3.

Air under a small pressure enters the upper bend of the pipeline 3 and stops the flow of electrolyte into the measuring device. Upon termination of electrolyte flow through conduit 3, the circuit between the electrodes opens to the 4P winding, and through the 4P-1 contact to the winding of the 2P relay.

Contact 2P-1 through an additional signaling electrode E4 creates a circuit on the lamp / 7i, signaling the readiness of the circuit to fill the next tank.

The lamp L. lights up when the electrolyte level in the measuring device is higher than normal and reaches the electrode E. Kz to Кз- emergency buttons. The first serves to stop the filling, the second - to fill the measuring device in case of underfilling. The amount of electrolyte poured in is set using the E and Ez electrodes.

Subject invention

A liquid dispenser consisting of two containers with overflow, placed at different levels, with siphon pipes for feeding the lower container and dispensing from its predetermined volumes of liquid, characterized in that, with an increase in the capacity of the dispenser and ease of maintenance It is made without shut-off valves on liquid lines and is automated by using an electrical circuit in which one of the electrodes is a metered liquid.