SE538367C2 - Air supply device and water supply system comprising an air supply device - Google Patents

Abstract

SUMMARY The invention relates to an air supply device (10) and a water supply system (1), in which such an air supply device (10) is located. The air supply device (10) comprises a gear valve (11), a closed vessel (12) and a first non-return valve (13). The gear valve (11) is arranged to lead pressurized water into the vessel (12) and to, in the absence of water pressure, lead water from the vessel (12) out through a drainage outlet. The vessel (12) is connected to the gear valve (11) and is arranged to discharge pressurized water via the first non-return valve (13). Inside the vessel (12) there is a water inlet, which has an upper mouth, which with respect to a total male height is covered in an upper quarter of the vessel (12), and a lower mouth, which with respect to said male height is covered in a lower quarter of the vessel (12). In addition, inside the vessel (12) there is a water outlet, which has a mouth, which with respect to said vessel height is covered in a central part of the cadet (12). The location of the mouths means that the air supply device (10), when filled with water, initially feeds a certain amount of air out through its water outlet and then continuously oxygenates water which flows through the cadet (12).

Description

TECHNICAL FIELD The present invention relates to an air supply device comprising a single-valve valve, a closed vessel and a first non-return valve; which is arranged to throttle the drainage outlet with water pressure and lead pressurized water into the vessel and, in the absence of water pressure, instead close the water inlet and direct water from the vessel out through the drainage outlet, the vessel having a water inlet connected to the water outlet of the changeover valve. a water outlet arranged to discharge pressurized water via the first non-return valve, and an aeration valve arranged to open at a pressure below atmospheric pressure in the vessel to enable it to be emptied of water via the drain outlet of the gear valve.

The invention further relates to a water supply system for individual use, which system comprises a fox water pump, which is connected via an air supply device to a hydrophore and a filter device arranged after the hydrophore, said air supply device comprising a growth valve, a shut-off valve and a first check valve. has a fox water inlet, which is connected to the fox water pump, a fox water outlet, which is connected to the vessel, and a drainage outlet and comprises a valve means which is arranged to, when the fox water pump works with water pressure, choke the drain outlet and divert water from the fox water. the fountain pump into the vessel and that when the fox water pump is switched off instead the fountain water inlet and lead water from the vessel out through the drainage outlet, the vessel having a water inlet connected to the foil valve fountain outlet, a water outlet connected to the first non-return valve, and , which is set up to open at a pressure below atmospheric pressure in the vessel to enable it to be emptied of water via the drain outlet of the changeover valve, the first non-return valve being connected to the hydrophore and being arranged to block in this direction towards the vessel, said hydrophore comprising a closed container having a water inlet connected to the first non-return valve, a water outlet connected to the filter device, and a float valve arranged to release any excess air in the hydrophore into the atmosphere, and said filter device comprising a closed tank, a circulation pump and a second non-return valve, the closed tank of the filter device being filled with a filter material and having a water inlet connected to the water outlet of the hydrophore, and a water outlet connected to a clean water line and to a return line, the circulation pump being connected to the return line and is set up through the return line to supply water through d a second non-return valve to the water inlet of the hydrophore, and wherein the second non-return valve is arranged to block in the direction from the water inlet of the hydrophore towards the circulation pump.

Prior art An air supply device and a water supply system according to the preamble are already included in the applicant's product range. A characteristic feature is that the air supply device used at each permanent water supply interruption is emptied of water via the drain valve of the gear valve and is instead filled with air via the vent valve of the vessel. When the water supply is renewed, this air is first forced out of the vessel's water outlet in order to reach via it a connected unit, such as a hydrophore, which sometimes needs an addition of air in order to function flawlessly. As soon as the vessel has been emptied of air, only the water flows on to the connected unit, which, if it only occasionally needs an addition of air, does not constitute a problem.

However, there are cases where it is desirable not only to supply a certain amount of air from time to time, but to supply a small amount of air more or less continuously in order to oxygenate the water. Such oxygenation is a prerequisite, for example, if you want to purify water by precipitating metals, such as iron and manganese, in a filter without the addition of chemicals, so that the quality of the water is improved.

A common way to oxygenate water is to let it fall down towards a water mirror, the falling water drawing air with it into the water mirror. However, there are situations in which, for various reasons, it is not possible to apply this solution. As an example may be mentioned hydrophores of composite materials, which are becoming more common and which, unlike many older welded hydrophores of sheet metal materials, have a relatively small diameter and pipe connections only at the bottom and top. The small diameter means that the top of the hydrophore does not have room for more than one float valve, which is needed to ensure that a volume of air enclosed in the hydrophore should not be able to exceed an optimal level. Therefore, both the water inlet to and the water outlet from the hydrophore must be placed in the bottom, which considerably complicates the above-mentioned oxygenation. The proximity solution is a pipe which extends upwards from the water inlet at the bottom and opens over said water mirror, but in the selected water purification example such a solution entails a significant disadvantage. It takes time to precipitate metals and the best result is achieved if the water, even when at the moment no water needs to be drained, is allowed to continuously circulate between the hydrophore and the filter. For this purpose, an energy-efficient circulation pump is traditionally used, but one does not achieve a sufficiently high pressure height to cope with the water pressure in a single pipe which extends from the bottom of the hydrophore up above the water level in it. OBJECT OF THE INVENTION In view of the above, the object of the present invention is to provide an improved air supply device and an improved water supply system, which comprises the improved air supply device. Brief Summary of the Invention The first object is achieved in a water supply device according to the inlet of the vessel upper mouth, which with respect to a total vessel height is located in an upper quarter of the vessel, and a lower mouth, which with respect to said vessel height is located in a lower quarter of the vessel, and in that the water outlet of the vessel inside the vessel has an opening which with respect to said vessel height is located in a central part of the vessel. By the solution according to the invention at least part of the above-mentioned oxygenation is placed in the air supply device and continues as long as water is fed into it, since the placement of the orifices at the indicated levels causes an air cushion to form at the top of the air supply device. this airbag.

Preferably, the upper orifice of the air supply device comprises a nozzle nozzle. The spray nozzle serves to atomize water and thus to maximize the water's oxygen uptake.

Preferably, the upper mouth of the air supply device has a larger opening area than the lower mouth. The lower orifice is only needed for drainage, which can occur slowly, and does not contribute to oxygenation when water is fed into the air supply device. Therefore, it is convenient to design it relatively small, so that a relatively large flow is obtained through the upper orifice when water is fed. into the air supply device. Preferably, the water inlet to the vessel of the air supply device comprises a tube extending upwardly from a bottom of the vessel, the lower mouth being formed in a lower wall portion of the tube. A solution with a pipe, which extends upwards from the bottom, constitutes a very simple and robust solution.

The second object is achieved in a water supply system according to the preamble in that the water inlet of the vessel inside the vessel has an upper mouth, which with respect to a total vessel height is located in an upper quarter of the vessel, and a lower mouth, which with respect to said vessel height is located in a lower quarter of the vessel, and in that the water outlet of the vessel inside the vessel has an opening which, with respect to said vessel height, is located in a central part of the vessel. Thanks to this solution, at least a part of the above-mentioned oxygenation can be placed in the air supply device and remain there as long as water is fed into it by the raw water pump, as the placement of the orifices at the indicated levels causes an air cushion to form above the air supply closed vessel. in this airbag.

Preferably, the upper mouth of the air supply system of the water supply system comprises a spreader nozzle. The spray nozzle serves to atomize the water and thus to maximize the water's oxygen uptake.

Preferably, the upper mouth of the air supply system of the water supply system has a larger opening area than the lower mouth. This lower mouth is only needed for drainage, which can take place slowly, and does not contribute to oxygenation when water is fed into the air supply device. Therefore, it is convenient to design it relatively small, so that a relatively large flow is obtained through the upper mouth when water is fed into the air supply device.

Preferably, in the water supply system, the water inlet to the vessel of the air supply device comprises a pipe extending upwards from a bottom of the vessel, the lower mouth being formed in a lower wall portion of the pipe. A solution with a pipe, which extends upwards from the bottom, is a very simple and robust solution.

According to one embodiment of the water supply system, the water inlet and water outlet of the hydrophore extend into the closed container of the hydrophore via the single container bottom and open inside the hydrophore into a lower part thereof. Such a solution frees the sides of the hydrophore from connections and frees up space in the top of the hydrophore for a float valve.

Preferably, the water inlet of the hydrophore comprises a tube extending upwardly from the container bottom, said tube in said lower portion having a lower orifice formed in a lower wall portion of the tube, and in an upper portion having an upper orifice having a larger opening area than the the estuary. A solution with a pipe extending upwards from the bottom is a simple and robust solution, the upper mouth being used for the supply of water and for oxygenation when the raw water pump is operating, while the lower, smaller mouth is used for circulating water between the filters. and the hydrophore by means of the circulation pump.

Preferably, it comprises the upper mouth of the tube in a hydrophoric spray nozzle. The spray nozzle serves to atomize the water and thus to maximize the water's oxygen uptake.

Preferably, the float valve of the hydrophore is arranged at an upper orifice of a riser, which extends down into the hydrophore to a level which, with respect to a total container height, is located in a central upper quarter of the hydrophore. Placing the float valve at the upper mouth of a riser moves the valve away from the water level in the hydrophore, which considerably reduces the risk of malfunctions due to, for example, dirt.

Brief Description of the Drawings The drawings show a preferred embodiment of the invention in a schematic form, in which: Fig. 1 is an overview view illustrating the invention in general; Fig. 2 is a sectional view illustrating detail 11 in Fig. 1; Fig. 3 is a sectional view illustrating detail 11 in Fig. 1; Fig. 4 is a sectional view illustrating detail IV in Fig. 1; and Fig. 5 is a sectional view illustrating an alternative embodiment of the detail IV in Fig. 1.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT In the drawings, Fig. 1 shows a water supply system 1, which is intended for individual use. The system 1 comprises a raw water pump 2, which collects raw water from a water source, such as a well, and which is connected via an air supply device 10 to a hydrophore 30 and to a filter device 50 arranged after the hydrophore 30.

The air supply device 10 comprises a changeover valve 11, a closed vessel 12 and a first non-return valve 13.

Of these, the gear valve 11 is shown in detail in Fig. 2, from which it appears that it comprises a raw water inlet 14, which is connected to the raw water pump 2, a raw water outlet 15, which is connected to the vessel 12, and a drainage outlet 16. The gear valve 11 comprises a spring-loaded piston 17 , which has a hollow piston shaft 17 'with a side inlet 17 ". The changeover valve 11 is arranged that, when the raw water pump 2 operates, with water pressure (see arrow A) against the spring load the throttle side inlet 17" and direct most of the water from the raw water pump 2 into the vessel 12 and only a leakage flow out via the hollow piston shaft 17 ”. On the other hand, when the raw water pump 2 is switched off, the piston 17 is arranged to spring-loaded the raw water inlet 14 and lead water from the vessel 12 via the open side inlet 17 "and the hollow piston shaft 17 'out through the drainage outlet 16 (sepile B), e.g. to a floor drain.

The vessel 12 is shown in detail in Fig. 3, from which it can be seen that it has a water inlet 18, which comprises a pipe 25, which extends upwards from a bottom 26 of the vessel 12. The pipe 25 is connected to the raw water outlet 15 of the changeover valve 11. and can via this receive raw water from the raw water pump 2 (see arrow C).

The tube 25 has an upper mouth 21, which with respect to a total vessel height H1 is located in an upper quarter of the vessel 12 above a possible highest water level L1 in the vessel 12, and a lower mouth 22, which with respect to said vessel height H1 is located in a lower quarter of the vessel 12. The upper mouth 21 has a larger opening area than the lower mouth 22 and includes a spreading nozzle 24. This is arranged to atomize (see arrows D) of the raw water pump 2 fed water in an air-filled space above the highest possible water level L1 in the vessel 12 in order to oxygenate the water.

The vessel 12 also has a water outlet 19, which comprises a pipe 27, which extends downwards from a top 28 of the vessel 12. The pipe 27 is connected to the first non-return valve 13 and can via this supply air or water to the hydrophore 30 (see arrow E ). At the bottom, the pipe 27 has an opening 23, which with respect to said vessel height H1 is located in a central part of the vessel 12. As long as one water level in the vessel 12 is below the opening 23 (see for example the indicated water level L2) only air is supplied from the vessel 12, on the other hand, when the water level in the vessel 12 rises past the opening 23, water is instead fed to the hydrophore 30, water which, however, according to the invention is continuously oxygenated thanks to the high upper mouth 21 of the tube 25.

The vessel 12 also includes an aeration valve 20, which is arranged at the top 28 of the vessel 12. The aeration valve 20 is arranged to open at a pressure of subatmospheric pressure in the vessel 12 to enable it to be emptied of this on the drain outlet 16 of the via gear valve 11 down to a lowest water level L3 at the height of the lower mouth 22 of the tube 25 (see arrow F).

The first non-return valve 13 is, as shown in Fig. 1, connected to the hydrophore 30 and is arranged to block in its direction towards the vessel 12, which the non-return valve 13 does as long as the raw water pump 2 is switched off. In this way, drainage of the hydrophore 30 on water via the air filling device 10 is prevented.

The hydrophore 30 is shown in detail in Figures 4 and 5 in two different embodiments. Both comprise a closed container 31, which has a water inlet 32, which is connected to the first non-return valve 13 and through which water can flow (see arrow G), a water outlet 33 , which is connected to the filter device 50 and through which water can flow out (see arrow H), and a float valve 34, which is arranged to release a possible excess of air in the hydrophore 30 into the atmosphere. Both the water inlet 32 and the water outlet 33 extend into the closed container 31 of the hydrophore 30 via a container bottom 35 and open the inner hydrophore 30 into a lower portion thereof.

In the embodiment of Fig. 5, the water inlet 32 of the hydrophore 30 further comprises a tube 36 extending upwards from the container bottom 35. This tube 36 has in the said lower portion a lower mouth 37, which is formed in a lower wall portion of the tube 36 and through which a smaller amount water can flow in (see arrows I). In an upper part, the pipe 36 also has an upper mouth 38, which has a larger opening area than the lower mouth 37 and through which a larger amount of water can flow in via a spreading nozzle 39 in the upper mouth 38 (see arrows J and K). The high-lying mouth 38 (above a possible highest water level in the container 31) and the spreader nozzle 39 contribute to an oxygenation of the water in the hydrophore 30 as long as the raw water pump 2 feeds water therein. Since the hydrophore 30 in Fig. 4 lacks the tube 36, instead all the water flows into it directly via the mouth of the water inlet 32 (see arrows L) and thus no oxygenation occurs at all in the hydrophore 30.

The float valve 34 of the hydrophore 30 is provided in both embodiments with a wide upper opening 40 of a riser 41. This extends down into the container 31 to a level which, with respect to a total container height H2, is located in a central upper quarter of the container 31. The riser 41 is arranged to be filled with water (see arrow M) all the way up to the float valve 34, which then closes when the water level in the hydrophore 30 is above a lower opening 42 of the riser 41 (see for example the indicated level L4). However, should the riser 41 instead direct air to the float valve 34, which is the case when the water level in the container 31 is below the lower opening 42 of the riser 41 (see for example the indicated level L5), there is an excess of air in the hydrophore 30. The air causes the float valve 34 to open and release air until a rising water level eats it to close.

After the hydrophore 30, as shown in Fig. 1, the filter device 50 is arranged. It comprises a closed tank 51, a circulation pump 52 and a second non-return valve 53. The closed tank 51 of the filter device 50 is filled with a filter material and has a water inlet 54, which is connected to the water outlet 33 of the hydrophore 30, and a water outlet 55, which is connected to a clean water line 3 and to the return line 56. The circulation pump 52 is connected to the return line 56 and is arranged to permanently supply water through the second check valve 53 to the water inlet 32 of the hydrophore 30 to then gradually fill the hydrophore 30 with water, which has several times greased the passerafilter device 50 and thus is very well purified from, for example, iron and manganese. The second non-return valve 53 is arranged to block in the direction from the water inlet 32 of the hydrophore 30 towards the circulation pump 52 and enters (blocks) when the fountain water pump 2 starts supplying water from the air filling device 10 to the hydrophore 30, since the fox water pump 2 is significantly more powerful than the circulation pump 52. Of course, it is also possible to let the circulation pump 52 operate intermittently or to simply turn it off while the raw water pump 2 is running.

Those skilled in the art will appreciate that the embodiment described above may vary in various ways within the scope of the claims. Thus, for example, the changeover valve 11 of the air supply device 10 could be designed in a completely different way or the vessels 12 of the aeration device 10 could be constructed differently.

Claims (6)

PATENT REQUIREMENTS An air supply device (10) comprising a gear valve (11), a closed vessel (12) and a first non-return valve (13), the gear valve (11) having a water inlet (14) for pressurized water, a water outlet (15) which is connected to the cadet (12), and a drain outlet (16) and comprises a valve means (17), which is arranged to throttle the drain outlet (16) with water pressure and lead pressurized water into the cadet (12) and that in the absence of water pressure in the stable, close the water inlet (14) and direct water from the vessel (12) out through the drainage outlet (16), the vessel (12) having a water inlet (18) which is connected to the water outlet (15) of the gear valve (11), a water outlet ( 19), which is arranged to discharge pressurized water via the first non-return valve (13), and an aeration valve (20), which is arranged to open at a pressure below atmospheric pressure in the cadet (12) to enable emptying thereof of water via the drain outlet (16) of the gear valve (11), which can be marked by the vessel s (12) water inlet (18) inside the vessel (12) has an upper mouth (21), which with respect to a total vessel height (H1) is covered in an upper quarter of the cadet (12), and a lower mouth (22), which with respect to said male height (H1) is covered in a lower quarter of the cadet (12), and that the water outlet (19) of the vessel (12) inside the vessel (12) has an opening (23), which with with respect to said male height (H1) are located in a central part of the vessel (12). The air supply device (10) of claim 1, wherein the upper orifice (21) comprises a spreader nozzle (24). An air supply device (10) according to claim 1 or 2, wherein the upper orifice (21) has a larger opening area than the lower orifice (22). An air supply device (10) according to any one of claims 1-3, wherein the water inlet (18) of the vessel (12) comprises a tube (25) projecting upwards into Iran a bottom (26) of the vessel (12), the lower the groove (22) is formed in a lower rock portion of the rudder (25). An air supply device (10) according to any one of claims 1-4, wherein the water outlet (19) of the cadets (12) comprises a tube (27) extending neatly from a top (28) of the vessel (12) to the opening (23). Water supply system (1) for individual use, which system (1) comprises an amber water pump (2), which is connected via an air supply device (10) to a hydrophore (30) and a filter device (50) arranged after the hydrophore (30). , said air supply device (10) comprising a gear valve (11), a closed 'cad (12) and a first non-return valve (13), the gear valve (11) having an amber water inlet (14) connected to the amber water pump (2), a amber water outlet (15) connected to the cadet (12), and a drain outlet (16) and comprising a valve means (17) arranged to, when the amber water pump (2) operates with water pressure, throttle the drain outlet (16) and direct water -Iran the amber water pump (2) into the vessel (12) and that when the amber water pump (2) is closed in the stable close the amber water inlet (14) and lead water Than the vessel (12) out through the drainage outlet (16), the vessel (12) having a water inlet (18), which is connected to the amber water outlet (1) of the gear valve (11) 5), a water outlet (19), which is connected to the first non-return valve (13), and an aeration valve (20), which is arranged to open at a pressure below atmospheric pressure in the vessel (12) to allow emptying thereof on water. via the drain outlet (16) of the gear valve (11), the first non-return valve (13) being connected to the hydrophore (30) and being arranged to spar in the direction than it towards the cadet (12), said hydrophore (30) comprising a closed container (31), having a water inlet (32) connected to the first non-return valve (13), a water outlet (33) connected to the filter device (50), and a float valve (34) fitted discharging a possible excess of air in the hydrophore (30) into the atmosphere, and said filter device (50) comprising a closed tank (51), a circulation pound (52) and a second non-return valve (53), 11 wherein the filter device (50) ) closed tank (51) is filled with a filter material and has a water inlet (54) which is connected to the end of the water outlet (33) of the hydrophore (30), and a water outlet (55), which is connected to a clean water line (3) and to a return line (56), the circulation pump (52) being connected to the return line (56) and being arranged feeding water through the return line (56) through the second non-return valve (53) to the water inlet (32) of the hydrophore (30), and wherein the second non-return valve (53) is arranged to spar in the direction of the water inlet (32) of the hydrophore (30) towards the circulation pump (52), characterized in that '<äl-lets (12) water inlet (18) inside'