DE202004000210U1 - Rapid water filtering, uses a conventional tire valve fitted to the water container, for an air pump to build up pressure and force the water through an active carbon filter for immediate use - Google Patents

Abstract

To give a rapid filtering action to drinking water, using a filter (3) containing active carbon, the water container (1) is fitted with a conventional non-rusting tire valve (2), for an air pump (4) to build up the required pressure to force the water through the filter for filtration.

Description

Summary

The present ending describes a water tank or an adapter for beverage bottles or similar Container, through a tire or ball valve via an air pump with compressed air is acted upon in order to achieve the necessary pressure for a on the container / Adapters to produce attached drinking water filters.

Underlying problem

Corresponds when traveling abroad the drinking water there often does not meet the usual hygiene standards and therefore poses a danger to health. In order to clean the contaminated water in the shortest possible time, fine-pored filters with activated carbon are used. For a quick Filtration requires a high water pressure at the filter. For this needs one a device that easily has high water pressure generated, and if possible is small, light, inexpensive and reliable.

State of the art

• 1. Methods already used in drinking water filtration, with their disadvantages: a) Muscle powered water piston pumps: weight of the pump, manufacturing costs of the pump, possible wear of the seals on the pump. Filter systems with small pumps do not perform well, whereas large Pumps are heavy. b) Sucking when drinking through a straw: only small amounts of water, not suitable for cooking water. c) Gravity utilization of a storage container suspended at a high point: low pressure, therefore also low water flow per time. d) Connection to one Faucet using the pressure of the water pipe: Faucet with standardized thread (M22) and sufficient pressure on the water pipe necessary, therefore cannot be used away from inhabited areas.
• 2. Another method of generating pressure: feeding compressed air in a pressure vessel This method makes water or another incompressible Fluid into a pressure vessel filled, which is then pressurized with air from a compressor at constant pressure becomes. This method is used in the chemical industry or for supply used by burners (e.g. DE0010126498A1).
• 3. water transport container, of similarities with the described invention: Also relevant to the environment are water bags for the transport of drinking water from foldable material, by the manufacturer, which is also the reservoir for one Manufactures filters based on the principle of gravity. Have water bags and storage containers the same closure Utility model DE0029813832U1.

Basic operating principle

In the present device the under “Stand der Technik, 2 "described Method (compressed air feed into a pressure tank filled with water) transfer the problem of drinking water filters, with the aim of expensive, relatively heavy water piston pumps due to light, inexpensive, powerful To replace air pumps from the bicycle accessories sector.

Functional description (Fig. 1)

First the container ( 1 ) filled with unfiltered water and then the filter ( 3 ) attached to the container. Finally, the whole thing is turned over so that the filter is down. On the air valve ( 2 ) a tire or ball pump ( 4 ) connected. Pumping creates an air / water mixture with excess pressure in the container. The air collects in the upper part of the tank while the water is pushed through the filter below. Correct positioning of the valve (top) or targeted deflection of the air flow prevents air from being inadvertently pumped through the filter instead of water or water from entering the air pump via the valve.

benefits

This device, like that Method of hand-operated water piston pumps has the advantage of being independent of a tap connection, a high pressure for a big Can generate water flow.

Opposite the water piston pumps the device presented here has the decisive cost advantage, the existence expensive, wear-prone single product (Water-piston pump) through an inexpensive, mass-produced product that is available in almost every household (Bicycle tire pump) is replaced.

The time disadvantage when using the arises from the fact that one for filling of the container the filter from the container must separate is more than compensated for by the fact that good bicycle pumps have one much higher Volume flow as equal Can produce water piston pumps.

For the customer group of bike tourists even creates a weight advantage, since they are no longer a pump for their tires and one for theirs Water filter, but only have to carry a single pump in their luggage.

Travelers who travel by car and do not have to pay attention to weight can use large, powerful foot pumps. So you can with just one water filter, depending on your choice the pump, put together an extremely light, as well as a particularly fast, powerful filter system.

Detailed description of the individual designs 1. Container (Fig. 2)

with air inlet valve, connection for filter, a hand strap near the air inlet valve and possibly an additional, lockable Admission to Fill in water, without removing the filter.

The air intake valve ( 2 ) is a standardized valve, like a ball or a bicycle or car tire, for connecting standard air pumps. The position of this valve is advisable on the opposite side of the tank from the filter connection, so that when the valve is held correctly, the air is at the valve and the water at the filter.

In order to hold the container comfortably with your fingers while pumping and at the same time press the pump head against the valve with the palm of your hand, there is a strap next to the valve ( 17 ) appropriate. This hand strap also stiffens the container near the valve, making the valve attachment more resistant and durable. A fastening for the pump can also be incorporated into this strap.

The connection ( 5 ) for the filter ( 3 ) is designed so that one of the commercially available travel filters (gravity filter or faucet connection filter with standard thread M22), previously supplied without a pump system, or a newly developed filter with a different connection fits. The container is expediently made of foldable material in order to take up little space in the backpack. It must be ensured that the container is made stable enough to withstand the pressures that occur.

The container can also have an additional, closable inlet opening ( 6 ) are expanded so that the filter does not have to be removed every time it is filled. This inlet opening can have the same closure as the filter connection.

The air inlet valve and possibly also the hand strap and / or a pump attachment can be integrated into the closure of this inlet opening in order to be able to exchange these parts more easily in the event of a failure ( 2a ).

With the inlet opening open or the air valve open without connecting one Pump, the device can also be used as a normal gravity filter become.

2.Adapter (Fig. 3)

For beverage bottles or similar Liquid transport container: this Design is very inexpensive to manufacture and has the advantage that the beverage bottle replace at regular intervals can without doing great financial losses to suffer. It is mainly for Faucet connection filter users suitable, the only occasionally filtered water away from inhabited areas need and therefore an inexpensive solution For this Find use case.

The adapter ( 7 ) contains the air inlet valve ( 2 ), a connection ( 5 ) for a drinking water filter ( 3 ) and a connection ( 8th ) for a beverage bottle ( 11 ) The air intake valve ( 2 ) is a standardized ball or tire valve, just like in the "container" design. Since the filter connection and the air inlet valve are very close together, it must be prevented that air instead of water is pumped through the filter. This is done with the aid of a valve attached to the air inlet valve Deflecting hose ( 9 ).

Again, an ergonomic one Hand strap and / or a pump attachment attached near the valve become.

The filter connection ( 5 ) can also be designed here, as for the "container" design, for a wide variety of filters. Here it is particularly recommended to connect to a filter (M22) designed for taps, since these have a diameter similar to that of plastic bottles.

The connection ( 8th ) to the beverage bottle ( 11 ) takes place in the simplest design directly over the thread of the bottle. On a good seal using a sealing ring ( 10 ) must be observed. With this design, however, a different adapter is required for each bottle type, since the threads of the different beverage bottles are not standardized. Abroad, it can be difficult to find a suitable bottle for the adapter. It is therefore necessary that the user always takes a suitable bottle from Germany with him or that the manufacturer researches which foreign bottles would also fit.

The adapter can also be fitted with a threaded connection on other water transport containers, such as. Water bags, canisters or barrels can be run. Advantages of this solutions are higher Volume (canister, barrel) or smaller pack size (water bag). However, the cost of this container larger than for beverage bottles.

The substructures described below for connection to beverage bottles ( 4 and 5 ) describe adapters that fit different bottles or canisters:

According to the design 4 an additional connector ( 13 ) on the bead ( 12 ) the beverage bottle ( 11 ), which is integrated into most bottles made of plastic for automatic filling and cleaning.

Inside this connection part there is an internal thread, suitable for the actual adapter ( 7 ), which is used to generate the pressure force from the adapter to the bottle. The seal is again made using a sealing ring ( 10 ) between adapter and bottle.

To make this connection part easy to mount on the bottle, it must either be made of elastic material ( 4a ) or in several parts.

In a simple version, normal adhesive tape can be used to secure the connection between the connection part and the plastic bottle, which is normally sufficient since this connection does not have to be replaced often. However, a more complex locking mechanism can also be used, for example a nut ( 14 ), which is screwed up on an external thread of the connecting part.

A suitable closure can be supplied as an accessory with which the bottle is closed for transport with the connector attached can be.

According to the design 5 is caused by elastic deformation of the sealing ring ( 10 ) a frictional connection between the adapter ( 7 ) and the inside of the bottle neck ( 11 ) generated. The adapter is inserted into the bottle neck when it is released. Then use the clamping screw ( 15 ) the sealing ring deforms. In order to fit a slightly larger diameter than the nominal diameter, fitting rings ( 16 ) can be inserted.

This design is the most universal of the designs and also fits on bottles or canisters that do not have a bead ( 12 ) have incorporated. However, the frictional connection does not withstand high pressures as well.

3. Filter housing

with air inlet valve and connection for beverage bottles or similar Liquid transport container at In this design, all parts described in the "adapter" design are included in the filter housing incorporated. The subassemblies described in 2 are also available here for different Connections.

The advantage of this solution is the compactness, disadvantage is the fact that the No longer filter on taps can be connected, or another adapter for this would be necessary.

Claims (12)

Device for generating pressure in drinking water filters according to 1 , characterized in that in a, to a drinking water filter ( 3 ) connected portable container ( 1 ), via a commercially available tire valve ( 2 ) with the help of an air pump ( 4 ) the pressure necessary for the filtration is generated. Pressure-resistant, portable, foldable water container with a connection fitting a drinking water filter, characterized in that an air valve ( 2 ) made of rustproof material, suitable for tire pumps in the container ( 1 ) is incorporated ( 2 ). Container according to claim 2, characterized in that an ergonomically shaped holding loop ( 17 ) is attached near the air valve, which may have incorporated a mounting for the pump ( 2 ). Container according to claim 2 or 3, characterized in that in addition a further, closable filling opening ( 6 ) is attached ( 2 ). Closure ( 6 ) for a filling opening on a water tank, characterized in that the air valve ( 2 ) and possibly a hand strap ( 17 ) and / or a pump attachment according to the preceding claims are incorporated in this closure ( 2a ). Adapter ( 7 . 3 ) characterized; that he has a connection ( 5 ) for a portable drinking water filter ( 3 ), a connection ( 8th ) to a standard beverage bottle ( 11 ) and an air valve ( 2 ) according to the previous claims possibly extended by a deflection hose ( 9 ), having. Adapter according to claim 6 with connection ( 5 ) suitable for commercially available beverage bottles, characterized in that the thread of the beverage bottle is used for the connection ( 3 ). Adapter according to claim 6 with connection ( 5 ) suitable for commercially available beverage bottles, characterized in that a connecting part ( 13 ) on the bead ( 12 ) is attached above the bottle neck, which has a thread that fits the actual adapter ( 7 ) contains ( 4 ). Adapter according to claim 6 with connection ( 5 ) suitable for commercially available beverage bottles, characterized in that by deforming a rubber sealing ring ( 10 ) a frictional connection between the adapter ( 7 ) and the inside of the bottle neck ( 11 ) is produced ( 5 ). Adapter according to claim 6, characterized in that the connection ( 5 ) on the thread of another liquid transport container, e.g. water bag, canister, barrel. filter housing for one Drinking water filter characterized in that the parts as in claims 6 to 10 are described, are incorporated directly into the filter housing. Device according to one of the preceding claims, characterized in that a ball or similar valve is used instead of the tire valve det.