RU2806711C1 - System for discharging overflowing water from water dispensing chamber during process of water vending - Google Patents

Abstract

FIELD: water vending machines.

SUBSTANCE: inventions are related to vending machines selling potable water by automatically controlled dispensing of water into the container of the water buyer. The system for removing overflowing water from the water loading chamber during water vending includes a tank (4) at the bottom (3) of the water dispensing chamber (2), designed for collecting overflowing water, and a pipeline (7) hydraulically connected to this reservoir (4) for draining overflowing water into sewerage. The system contains a diaphragm pump (8), hydraulically connected to the gap in said outlet pipeline (7), and a pressure switch (10). Moreover, in the section of this pipeline (7) between the bottom (3) and the pump (8), the pipeline (7) has a branch (9), through which a pressure switch (10) is hydraulically connected to the pipeline (7), electrically connected to the diaphragm pump (8) to turn it on and off.

EFFECT: ensuring forced supply of overflowing water from the water dispensing chamber into the sewerage with automatic maintenance and renewal of the water seal.

1 cl, 1 dwg

Description

Field of technology to which the inventions relate

The inventions relate to aquavending and aquavending devices, i.e. to water vending machines by dispensing water into the water buyer's container through a water filling chamber, specifically to means of removing overflowed water from the water filling chamber during the aquavending process.

State of the art

As is known, in the process of aquavending, a given volume of water is automatically dispensed into the container of the water buyer, which is temporarily placed for this purpose in the water filling chamber, which is part of the aquavending apparatus. At the same time, during such dispensing, water often overflows and this overflowed water must be collected and discharged into the sewer system.

There are known means of draining overflowed water from the water loading chamber, which consists of making the bottom of the water loading chamber in the form of a reservoir for collecting overflowed water, equipped with a drain pipe (discharge pipeline) for draining overflowed water into the sewer by gravity (see, for example, patents RU: No. 203953 U1, G07F 13/00, published: 04/28/2021 Bulletin No. 13; No. 207954 U1, В67С 3/02, published: 11/25/2021 Bulletin No. 33; No. 208499 U1, G07F 13/00, published: 12/22/2021 Bulletin No. 36; No. 2753623 C1, G07F 13/00, published: 08.18.2021 Bulletin No. 23).

Known means of draining overflowed water solve the problem of this drainage by gravity, which is impossible in the case of a remote entrance to the sewer, as well as when the entrance to the sewer is located above the level of the filling chamber.

The reason that prevents the known technical solutions from discharging overflowed water into the sewer when it is impossible to discharge it by gravity is the lack of means of forcing this water into the sewer.

The prototype for the claimed method of removing overflowed water from the water loading chamber during the aquavending process is a method consisting of collecting overflowed water during the aquavending process in the bottom tank of the water loading chamber and removing this water from this tank through a pipeline attached to it for discharging the overflowed water into the sewer by gravity (see description of patent RU No. 2753623 C1, G07F 13/00, published on August 18, 2021 in Bulletin No. 23).

The prototype for the claimed system for removing overflowed water from the water loading chamber during the aquavending process is a system that includes a tank at the bottom of the water loading chamber, designed to collect overflowed water, and a pipeline hydraulically connected to this reservoir for draining overflowed water into the sewer by gravity (see the description of the patent RU No. 2753623 C1, G07F 13/00, published on 08/18/2021 in Bulletin No. 23).

The features of the known method and system (prototypes), common to the features of the claimed method and system, are the features of the known method and system listed above (except for gravity flow).

The reason that prevents the known method and system (prototypes) from achieving the stated technical result is the lack of means for forcing overflowed water from the water filling chamber into the sewer.

The technical problem that the patented method and system are aimed at solving is the need to create the possibility of forced drainage of overflowed water from the water filling chamber into the sewer in the case when this drainage is impossible by gravity (remoteness and/or altitude of the entrance to the sewer).

Disclosure of the essence of inventions

The technical result that mediates the solution to this technical problem is to ensure the forced supply of overflowed water from the water loading chamber to the sewer, and such a supply in which a water seal is automatically maintained and updated in the water discharge pipeline, which has an arbitrary configuration, preventing gas exchange between the filling chamber water and sewerage.

In this case, the overflowed water is collected in the tank at the bottom of the loading chamber and discharged through the discharge pipeline connected to it into the sewer by a membrane pump connected to the gap in the said discharge pipeline, so that part of this water remains in this pipeline at a given level above the membrane pump and below the bottom of the loading chamber water. To do this, sequentially repeated switching on and off of the membrane pump is carried out so that if the actual water level in the specified discharge pipeline exceeds the specified specified water level, then the membrane pump is turned on, and when the actual water level in the specified discharge pipeline decreases to the specified specified water level, the membrane pump is turned off .

The technical result is achieved in that the system includes a tank at the bottom of the water loading chamber, designed to collect overflowed water, a pipeline for discharging the overflowed water into the sewer system, hydraulically connected to this tank, a diaphragm pump hydraulically connected to the rupture of the specified discharge pipeline, and a pressure switch, in this area of this pipeline, between the bottom and the pump, the pipeline has a branch through which a pressure switch is hydraulically connected to the pipeline, which in turn is electrically connected to the diaphragm pump to turn it on and off.

Brief description of drawings

The attached figure (without a number) schematically shows a system for removing overflowed water from the water filling chamber during the aquavending process, implementing the corresponding method.

Implementation of inventions

An aqua-vending apparatus, as is known, contains a housing and means for preparing drinking water installed in the housing and means for automated supply of water (not shown) to the container 1 of the water buyer by means of a water filling chamber 2 installed in said housing. The bottom 3 of the chamber 2 is usually made in the form of a funnel-shaped tank 4 of the bottom of the water filling chamber. In this case, this tank is equipped with a horizontal lid 5 (or table 5, which in this case is identical to the lid), usually perforated and intended for temporary placement of water buyer container 1 on it with the neck of this container placed under the water supply pipe 6 to the water buyer container. Reservoir 4 is designed to collect and discharge overflowed water, for which it is equipped with a pipeline 7 for discharging overflowed water into the sewer. In addition, a membrane (diaphragm) pump 8 is hydraulically connected to the gap in the pipeline 7, and in the section of this pipeline between the bottom 3 and the pump 8 (i.e., up to the entrance to the pump 8 or, which is the same, hydraulically above the pump 8) the pipeline 7 has a branch 9, through which a pressure switch 10 is hydraulically connected to the pipeline 7, electrically connected in turn to the membrane pump 8 to turn it (the pump) on and off in order, on the one hand, to drain overflowed water from the reservoir 4 through the pipeline 7 into the sewer , and on the other hand, automatic maintenance and updating of the water seal 11 in the pipeline 7.

The specified water seal 11 is a column of water in the pipeline 7 with a height of h ₁ between a given (upper) level 12 of this water, located below the bottom 3 and above the pump 8, and the level 13 of the location of the pump 8 on the pipeline 7 (when this pump is not working and as a result pipeline 7 in this place is blocked by pump valve 8). In this case, the given water level 12 in the hydraulic seal 11 is determined by setting the pressure switch 10 to level h ₂ between the given water level 12 and the level 14 of the location of the branch 9, through which the pressure switch 10 is hydraulically connected to the pipeline 7.

The attached figure shows the initial (vertical) section of the pipeline 7, on which (i.e., on the vertical section) a pump 8 is installed and a branch 9 is made for the pressure switch 10. In this case, it is obvious that h ₂ is less than h ₁ . However, the pipeline 7 may have different sections (vertical, horizontal, inclined), so that such a configuration of its (pipeline) sections is possible when, after a short vertical initial section, the pipeline 7 is bent and thereby passes into its horizontal section, and the specified pump 8 and branch 9 are installed precisely on the horizontal section of this pipeline. Under such circumstances, the water seal 11 will be located partially in the vertical section (level 12) and partially in the horizontal section of the pipeline 7 with emphasis on the pump 8, so that in this case there will be equality between h ₁ and h ₂ . Thus, in the general case h ₂ ≤h ₁ .

A pressure switch, as you know, is a water level sensor widely used in washing machines. The pressure switch contains a water pressure-sensitive element and associated electrical contacts, which are closed if the water pressure acting on its sensitive element exceeds a given (adjustable) water level, and are open if the water pressure acting on its sensitive element is equal to or less than this given water level (https://pikabu.ru/story/ustroystvo_yelektronnogo_pressostata_6938323).

Thus, the system for discharging overflowed water from the chamber 2 of pouring water into the container 1 of the water buyer in the process of aquavending contains a tank 4, bottom 3 of chamber 2, a pipeline 7, a membrane (diaphragm) pump 8 and a pressure switch 10 electrically connected to it, interconnected as shown higher. In this case, the choice of a membrane (diaphragm) pump for the forced supply of water from reservoir 4 to the sewer system is due to the fact that it (the pump) has high efficiency, a long service life, maintainability, the ability to create high pressure with minimal costs, low supply voltage of the electric drive (12 v ), which provides the necessary electrical safety when used on water, the ability to hydraulically lock the pipeline when the pump is turned off.

The operation of the system and an example of the method are as follows.

To make a purchase of water, the water buyer installs his container 1 in the water filling chamber 2 directly on the lid (table) 5, bringing the neck of this container under the pipe 6, and starts the process of dispensing water into the water buyer’s container 1, during which it is possible to overflow water, requiring discharging overflowed water into the sewer system.

The water overflowed during the aquavending process enters the tank 4 of the bottom 3 of the water filling chamber 2 and is then discharged through pipeline 7 to the sewer. Moreover, at the first moment of overflow time, when the actual water level in pipeline 7 is higher than the specified level 12, the water pressure acting on the pressure switch 10 exceeds the specified threshold value and the pressure switch 10 is activated, as a result of which the corresponding contacts of the pressure switch are closed and the pump is turned on for this reason 8. During the operation of the pump 8, water is pumped out from the reservoir 4 into the sewer through the pipeline 7, but until the actual water level in the pipeline 7 becomes equal to the specified level 12. At this moment (at the moment these levels are equal), the operation occurs the pressure switch 10 in the opposite direction, its contacts are therefore opened and the pump 8 is turned off, hydraulically locking the pipeline 7 at the location of the pump 8. As a result of this shutdown and the said locking, water remains in the pipeline 7 in section h ₁ of this pipeline, thereby forming a water seal 11 , preventing harmful gas exchange between the water filling chamber 2 and the sewerage system. Then, when the water overflow is repeated, the cycle is repeated and the water seal 11 is updated, which is necessary to prevent the proliferation of harmful microorganisms in the water seal. Thus, in each cycle, two automatically coordinated processes occur: the process of removing overflowed water from the reservoir 4 and the process of maintaining and updating the water seal 11.

Claims (1)

A system for removing overflowed water from the water loading chamber during the aquavending process, including a tank (4) of the bottom (3) of the water loading chamber (2), designed for collecting overflowed water, and a pipeline (7) for draining overflowed water hydraulically connected to this tank (4) into the sewer system, characterized in that the system contains a membrane pump (8), hydraulically connected to the gap in the said outlet pipeline (7), and a pressure switch (10), while in the section of this pipeline (7) between the bottom (3) and the pump (8 ) the pipeline (7) has a branch (9), through which a pressure switch (10) is hydraulically connected to the pipeline (7), which in turn is electrically connected to the diaphragm pump (8) to turn it on and off.