RU215358U1 - SIPHON - Google Patents

Abstract

The proposed utility model relates to hydraulic devices and can be used in many industries to automatically convert a continuous fluid flow with a flow rate that fluctuates over a large range into a discrete flow with a higher flow rate. More specifically, this utility model can be used for metered liquid supply in the food and chemical industries, in irrigation systems and in various hydraulic flushing devices. The purpose of the proposed utility model is to simplify the design of the siphon and increase reliability in operation by expanding the range of change of the input flow. The essence of the utility model is that in a siphon containing suction 2 and drain 3 parts, a neck 4 and a vacuum breaking mechanism 5, the vacuum breaking mechanism 5 is made in the form of a cup 8 and a cover 9 attached to it with through holes 10 and an axial cylindrical guide 11 and is installed at the end of the drain part 2 with the possibility of axial movement by means of two restrictive rings 6 and 7. Implementation of the vacuum breaking mechanism in the form of a cup 8 and a cover 9 with through holes 10 and a cylindrical guide 11 and installing it at the end of the suction part 2 by means of restrictive rings 6 and 7 with the possibility of axial movement, a simplification of the siphon design was achieved and reliability in operation was increased by expanding the range of change in the input flow and providing a sharp breakdown of the siphon vacuum. The application of the proposed utility model in many industries will increase the reliability and efficiency of hydraulic automation systems. 8 ill.

Description

The utility model relates to hydraulic automatic devices and can be used in many industries for automatically converting a continuous fluid flow with a flow rate that fluctuates over a large range into a discrete flow with a higher flow rate. More specifically, this utility model can be used for metered liquid supply in the food and chemical industries, in irrigation systems and in various hydraulic flushing devices.

Known design of the siphon, which is part of the device for irrigation [RF Patent No. 2015661, cl. A01G 25/02, A01M 7/00 dated 07/15/94 Bull. No. 13].

The disadvantage of this siphon is the low reliability of operation due to the unstable breakdown of the vacuum at the end of the liquid drain from the supply tank when the value of the input liquid flow approaches the drain flow.

The closest technical solution is a siphon containing a suction part placed in a supply tank, a drain part, a neck and a vacuum breaking mechanism, including a locking chamber open from above, communicated with the supply tank and through a channel - with the siphon neck, while the supply tank is in communication with the atmosphere , the locking chamber is fixed on the suction part of the siphon, and the fastening of the locking chamber to the suction part of the siphon is made with the possibility of adjusting the distance in height between the neck and the chamber [RF Patent No. 2127833, cl. F04F 10/02, G01F 13/00 dated 03/20/99 Bull. No. 8 (prototype)].

The disadvantages of this siphon are the complexity of the design and low reliability in operation.

The connection of the cavity of the locking chamber with the neck through the hydraulic channel creates the possibility of depressurization of the siphon and disruption of its normal operation. At input flow rates close to the siphon drain flow rate, the water level in the supply tank decreases very slowly, and in order to obtain a sufficient level gap between the upper edge of the locking chamber and the water level in the flow tank, a long time is required to empty the locking chamber, which leads to a decrease in the flow area of the hydraulic channel or increase the volume of the locking chamber. Reducing the flow area of the hydraulic channel increases the likelihood of clogging, reduces the sharpness of the breakdown of the vacuum and reliability, and an increase in the volume of the locking chamber increases the consumption of materials and complicates the design.

The purpose of the proposed utility model is to simplify the design of the siphon and increase the reliability in operation by expanding the range of input flow.

This goal is achieved by the fact that in the siphon containing the suction and drain parts, the neck and the vacuum break mechanism, the vacuum break mechanism is made in the form of a glass and a cover fixed to it with through holes and an axial cylindrical guide and is installed at the end of the drain part by means of two restrictive rings with the possibility of axial movement.

The essence of the proposed utility model is shown in the figures, where

in fig. 1 - General view of the siphon;

in fig. 2 - Siphon in a section with a mechanism for breaking the vacuum, a consumable container and a tap;

in fig. 3 - Structural diagram of the vacuum breaking mechanism;

in fig. 4 - The position of the vacuum breakdown mechanism during the initial phase of filling the supply tank;

in fig. 5 - The position of the vacuum failure mechanism in the intermediate phase of filling the supply tank;

in fig. 6 - The position of the mechanism for breaking the vacuum when filling the supply tank and draining the liquid from it;

in fig. 7 - The position of the vacuum break mechanism when the water level in the supply tank drops to the level of the upper cut of the glass;

in fig. 8 - The position of the vacuum break mechanism in relation to the water level in the supply tank after emptying the glass and breaking the vacuum in the suction part, followed by the end of the water drain by the siphon.

Siphon 1 contains suction 2 and drain 3 parts, interconnected by a neck 4. At the end of the suction part 2 with the possibility of axial movement with stroke h, a vacuum breaking mechanism 5 is installed by means of restrictive rings 6 and 7 (Fig. 1 and 2). Vacuum breaking mechanism 5 consists of cup 8 and cover 9 attached to it with through holes 10 and cylindrical guide 11 (Fig. 3). For the operation of the siphon 1, it is installed in a supply tank 12, into which liquid is supplied from the tap 13 (Fig. 2 and 4).

Works siphon 1 as follows.

The valve 13 is opened, the liquid with the flow rate q enters the supply tank 12 and accumulates in it. The liquid level in the supply tank begins to rise, as a result of which the vacuum breaking mechanism 5 also rises due to the empty glass 8 and the cylindrical guide 11 (float effect), picking up the stroke h, rests against the restrictive ring 6 and stops (Fig. 4). With a further increase in the liquid level in the supply tank above the level of the upper cut of the cup 8, the liquid fills the cup 8 through the passage holes 10 (the float effect disappears), and the vacuum breaking mechanism under the action of its weight goes down, abuts against the restrictive ring 7, forming a stroke h ( Fig. 5). When the liquid level in the supply container 12 reaches the level of the neck 4 (the end of the accumulation period), the siphon 1 is activated and drains the liquid from the supply container 12 through the drain part 3 with a flow rate Q exceeding the flow rate q (Fig. 6). The liquid level in the supply tank 12 begins to decrease, while the vacuum breaking mechanism 5 remains in the lower position under the action of its weight, without breaking away from the restrictive ring 7 (Figs. 6 and 7). The decrease in the liquid level to the level of the upper edge of the cup 8 leads to the cessation of the flow of liquid from the supply container 12 into the cup 8 through the passage holes 10 in the lid 9, which leads to a sharp emptying of the cup 8 due to the high flow rate of the drain Q of the siphon 1. Vacuum breakdown mechanism 5, like a float, abruptly pops up and, resting against the restrictive ring 6, raises the upper cut of the glass 8 from the liquid level in the supply container 12 by the stroke value h, which ensures a guaranteed breakdown of the vacuum and a reliable end of the drain of the siphon 1 (Fig. 8), since the flow q in a short time (1-3 s) necessary for a reliable breakdown of the vacuum cannot raise the liquid level in the supply tank 12 by the amount of stroke h and enter the glass 8 (the end of the emptying period of the supply tank 12). Further, the work cycles of accumulation - emptying of the supply tank 12 continue automatically, while the liquid is supplied from the tap 13.

Thus, due to the fact that the vacuum breaking mechanism 5 is made in the form of a cup 8 and a cover 9 attached to it with through holes 10 and an axial cylindrical guide 11 and is installed at the end of the drain part 2 with the possibility of axial movement by means of two restrictive rings 6 and 7, hydraulic communication channels with small flow sections subjected to a high probability of clogging were excluded from the design of the siphon, a sharp breakdown of the vacuum of the siphon 1 was provided for a wide range of changes in the input flow q and its reliability was increased. Even at the input flow rate q close to the drain flow rate Q, when the liquid level in the supply tank 12 decreases at an insignificant rate when the siphon 1 is drained, the vacuum break mechanism 5 at the end of the drain abruptly emerges from the liquid and is guaranteed (by the value h) to tear off the level of the upper face glass 8 from the liquid level in the supply container 12, which prevents the liquid from the container 12 from entering the glass 8 at the moment of vacuum failure and thereby ensures a guaranteed vacuum failure and reliable operation of the siphon.

In the conditions of the workshops of the FGBNU VNII "Rainbow" in 2022, an experimental sample of the proposed siphon was made. Tests of the sample on the stand in the laboratory showed high reliability and ease of use due to the simplification of the design. Vacuum breakdown occurred almost instantaneously within 1 s at an input flow q close to the drain flow Q.

The application of the proposed utility model in many industries will increase the reliability and efficiency of hydraulic systems, where it is required to automatically convert a continuous fluid flow with a flow rate that fluctuates over a large range into a discrete flow with a higher flow rate. More specifically, this utility model can be used for metered liquid supply in the food and chemical industries, in irrigation systems and in various hydraulic flushing devices.

Claims (1)

A siphon containing a suction and drain part, a neck and a vacuum break mechanism, characterized in that the vacuum break mechanism is made in the form of a cup and a cover fixed to it with through holes and an axial cylindrical guide and is installed at the end of the drain part by means of two restrictive rings with the possibility of axial movement.

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