RU108056U1 - DEVICE FOR SECONDARY USE OF SEWAGE WATER IN PUBLIC TOILETS - Google Patents

Abstract

 1. A device for the secondary use of wastewater, consisting of a reservoir in which a drain is organized from at least one wastewater receiver and an ejector, the working nozzle of which is connected to a cold water network, the ejector exit is connected to a washing system, at least one toilet bowl or urinal, and the intake of water into the mixing chamber of the ejector is organized from the tank through a non-return valve that prevents the movement of water in the direction of the tank, and a float valve, which is designed so that if the water level is higher than imalnogo, the valve is open and if the water level is below the minimum, the valve is sealed, the minimum water level is above the level of the water intake to the ejector. ! 2. The device for the secondary use of wastewater according to claim 1, characterized in that it contains an overflow device by which water is removed from the tank into the sewer network if the water level in the tank exceeds the level of overflow, which is located above the minimum water level. ! 3. The device for the secondary use of wastewater according to claim 2, characterized in that the ejector is located inside the tank. ! 4. The device for the secondary use of wastewater according to claim 2, characterized in that it contains a mesh filtering partition, which divides the reservoir into two compartments in such a way that water flow is organized into one compartment, and water is removed from it in case of overflow, and from another compartment, water is drawn into the mixing chamber of the ejector. ! 5. The device for the secondary use of wastewater according to claim 4, characterized in that the ejector is located inside the tank. ! 6. Device

Description

The device is intended for use in public toilets and sanitary facilities of public premises, but can also be used in sanitary facilities of residential premises.

It is known that modern public toilets are necessarily equipped with a certain set of sanitary appliances. In the public toilet should be installed several toilets and several washbasins complete with water fittings, as well as, possibly, several urinals. It should be noted that the flushing systems of toilets and urinals are directly connected to the cold water network, and the drain valves of the washbasins are connected directly to the sewer.

The main technical result of the utility model is water saving, which is achieved through the secondary use of wastewater from washbasins in flushing systems of toilets and urinals. In addition, the volume of water disposal is accordingly reduced.

A device for the secondary use of wastewater consists of an ejector and a reservoir into which a drain of at least one wastewater receiver is organized. The ejector must be connected in a certain way: the working nozzle must be connected to a cold water network, the outlet of the ejector must be connected to the flushing system of at least one toilet bowl or urinal, the water intake into the mixing chamber of the ejector must be arranged from the tank. Thanks to this structure, the following effect is achieved: during washing the toilet or urinal, cold water passing through the ejector will draw in a certain amount of wastewater from the tank, which will reduce the flow of clean water for washing. The intake of water from the tank must be organized through a check valve to prevent water from moving in the direction of the tank, otherwise tap water will flow into the tank.

If the water level in the tank is insufficient, the ejector will begin to suck in air, which will lead to the formation of air jams in the pipes, bubbling processes in the flushing tanks or disruption of the normal operation of the urinal flushing systems. To prevent air leakage, it is necessary to install a float valve on the water intake line from the tank, which must be arranged so that if the water level is above the minimum, then the valve is open, and if the water level is below the minimum, then the valve is hermetically closed, and the minimum water level is located above the level of water intake into the ejector.

The ejector can be selected in such a way that all wastewater from the washbasins will be reused in the flushing systems.

The above signs are enough to obtain the main technical result - saving water. To save water, it is enough to connect the above device in a public toilet in this way.

To avoid overfilling the tank, an overflow device may be provided by which water from the tank will be removed to the sewer system if the water level in the tank exceeds the level of overflow, which is located above the minimum water level.

To make the device more compact, it makes sense to place the ejector inside the tank.

Despite the fact that the wastewater from the washbasins is clean enough, hair or other small objects can get into the tank. These objects are not able to damage the ejector, but it is still better to install a mesh filtering partition. The partition must divide the tank into two compartments in such a way that water flow is organized in one compartment and water is removed from it in case of overflow, and water is taken from the other compartment into the ejector mixing chamber.

It is necessary to have access to the tank for maintenance or just for sanitization, so it is better to equip the tank with a removable lid.

Figure 1 shows the connection diagram and location of the device in a conventional public toilet. The device for the secondary use of wastewater 1 is connected to the tap water and to the washing systems of the toilets 2 and urinals 3. The drain from the wash basins 4 is organized into a common waste pipe 5, which, in turn, is connected to the device for the secondary use of wastewater.

Figure 2 shows specifically a device for the secondary use of wastewater in section. The device consists of a reservoir 6 and an ejector 7, which is located inside the reservoir. A check valve 8 and a float valve 9 are installed on the water intake line to the ejector mixing chamber. The dashed line indicates the minimum water level 10 in the tank at which the float valve can be opened. In addition, the figure shows an overflow device 11, wherein the overflow level 12 is indicated by a dashed line, a mesh filter partition 13, and a tank lid 14.

It should be noted that the proposed device is very simple and can be made in a handicraft way. All the elements that make up the device are in free retail and they are inexpensive.

One of the embodiments of the utility model is depicted in figure 2. The tank 6 with the cover 14 is not under pressure and does not bear the load, therefore, can be made of any material. The volume of the tank should be approximately 20 liters. The ejector 7 must be selected so that all wastewater from the washbasins is useful. This issue requires a closer look:

In public toilets, each user spends on average about 9 liters of water for flushing the toilet or urinal, and about 1 liter of water for washing their hands. Thus, in order to reuse all the wastewater from the sinks, an ejector with a very small ejection coefficient is required. Pressure loss at this ejection coefficient will be very small.

The ejector does not have moving parts and elements, so it cannot fail. In waste water, as a rule, no abrasive particles are present, therefore, wear of the nozzle is also impossible. The device will work for a long time and reliably.

A check valve 8 and a float valve 9 are installed on the water intake line. The design of the float valve may be different. You can use a conventional float valve, only install it in an inverted state. It is important to ensure tightness of the valve closure when the water level drops below the minimum, which can be achieved, for example, by placing additional cargo on the float.

The overflow device 11 and the strainer screen 13 do not need to be explained.

The device operates as follows. The tank is filled with wastewater from the sinks. During each flush of the toilet bowl or urinal, a portion of the wastewater is sucked from the reservoir using an ejector and then reused for flushing. The device makes it possible to reuse all wastewater from washbasins in all public toilets, which will reduce the consumption of clean water and the cost of water disposal.

Claims (6)

1. A device for the secondary use of wastewater, consisting of a reservoir in which a drain is organized from at least one wastewater receiver and an ejector, the working nozzle of which is connected to a cold water network, the ejector exit is connected to a washing system, at least one toilet bowl or urinal, and the intake of water into the mixing chamber of the ejector is organized from the tank through a non-return valve that prevents the movement of water in the direction of the tank, and a float valve, which is designed so that if the water level is higher than imalnogo, the valve is open and if the water level is below the minimum, the valve is sealed, the minimum water level is above the level of the water intake to the ejector. 2. The device for the secondary use of wastewater according to claim 1, characterized in that it contains an overflow device by which water is removed from the tank into the sewer network if the water level in the tank exceeds the level of overflow, which is located above the minimum water level. 3. The device for the secondary use of wastewater according to claim 2, characterized in that the ejector is located inside the tank. 4. The device for the secondary use of wastewater according to claim 2, characterized in that it contains a mesh filtering partition, which divides the reservoir into two compartments in such a way that water flow is organized into one compartment, and water is removed from it in case of overflow, and from another compartment, water is drawn into the mixing chamber of the ejector. 5. The device for the secondary use of wastewater according to claim 4, characterized in that the ejector is located inside the tank. 6. A device for the secondary use of wastewater according to claim 1, 2, 3, 4 or 5, characterized in that the tank has a removable lid.