CN101668906A - Floor drain - Google Patents

Abstract

Floor drain with a water trap comprising an upper screen (19) or lip and a lower screen or threshold (32) which extends to a higher water level (29) than the lower edge of the upper screen and water flows first below the upper screen and thereafter above the lower screen. The inlet portion in front of the upper screen has a small cross-section or volume relative to the volume of water between the upper and lower screens, ensuring efficient flushing away of light contaminants.

Description

floor drain

technical field

The present invention relates to closed floor outlets or floor drains and water seals or water traps for floor outlets or floor drains for bathrooms, toilets, kitchens and the like.

Background technique

An unsatisfactory problem with floor drains is the cleanliness of the floor drain itself. If the drain is not kept clean, the risk is that organic matter accumulates in the drain, where it rots and emits an odor. Deposits can also occur in floor drains, causing them to clog. Removal and cleaning by chemical means needs to be performed frequently. Possibility of cleanup is made difficult by the water trap and the accumulation of organic pollutants is thereby enhanced.

Water traps are used in floor drains to prevent air and odors from the sewer system from entering living spaces. In the water trap (odor seal), the outgoing water is forced to flow first under the first strainer and then over the second strainer, the upper edge of which is positioned higher than the lower edge of the first strainer. edge so that the remaining water prevents the passage of air.

Together the two screens or screens of the water trap also make cleaning of the sewer pipe from eg the floor drain more difficult. In order to solve this problem, it is known to arrange an opening with a seal through which the cleaning helix can be pushed after removal of the seal. However, these openings are small and cleaning can be difficult, and removing the seal can often be difficult.

Contents of the invention

It is an object of the present invention to provide an improved floor drain which reduces the deposition and retention of floating matter in the drain, thus remaining cleaner and more hygienic.

This object is achieved according to claim 1 . Due to the small inlet flow cross-section, the water will have a greater velocity as it enters, which allows light organic contaminants (which are a problem) to be washed under the screen or lip protruding downward from above , then rises to the surface in the blocked portion of the trap behind. In said blocked part, which preferably has a larger volume, the flow velocity will be lower than in the inlet, and lighter organic matter can rise to the surface and then accompany the water through a second barrier or threshold protruding from below. ) and enter the exit. Preferably, except for the inlet and outlet, the entire interior of the floor drain or weep is used as a blocked reservoir between the inlet and the outlet.

It may be mentioned that it is always desirable to have a large reserve of water in the floor drain, not allowing the water to evaporate but allowing the sewage air to flow upwards. Accordingly, preferred embodiments of the present invention provide a floor drain that is hygienic and less prone to clogging than known floor drains and that makes good use of the available space of the water trap.

In a further development of the inventive concept, water is supplied from eg a bathtub or a washstand through a separate pipe, the lower end of which extends downwards into the water. The high flow and velocity of the water from the tub effectively flushes the water trap clean.

A further object of the invention is to significantly facilitate the cleaning of outlet pipes at floor drains.

This object is achieved according to claim 5 . By arranging an outlet water obstruction in the form of an insert, it is easier to clean the outlet pipe. It also becomes possible to manufacture floor drains in a practical way. By arranging the outlet as a funnel-shaped part inside the floor drain, the wall of the outlet constituting the outlet barrier can be pulled up even above the level of the outlet pipe without reducing the available flow cross-section and from the entire area of the floor drain (except outside the inlet) will be transported to the outlet without hindrance. Since today's authorities prescribe a minimum height between the lower inlet barrier or lip and the higher outlet barrier, this allows for a higher low barrier and thus also for a higher height and reduced floor at the bottom of the drain thickness. This in turn means that new floor drain embodiments can be used with thinner top walls (floors). By further widening the outlet funnel portion it acts as an effective stop preventing the insert from being pushed into the outlet and also provides a good grip when the insert is to be removed for cleaning purposes.

Description of drawings

Further advantages and characteristics of the invention are apparent from the dependent claims and the following description of embodiments of the invention. In this regard, FIG. 1 shows a known floor drain, FIG. 2 shows a floor drain according to a preferred embodiment of the invention, and FIG. 3 shows a fixed part of a floor drain installed or integrally cast in a floor or The main part, Figures 4 and 5 are the details, Figure 6 is the insert used to form the outlet obstruction in the water trap, Figure 7 is the insert in Figure 6 installed in the floor drain, Figure 8 is a matching Upper trap insert for clamping ring, Figure 9 is a floor drain with inserted trap part, Figures 10 and 11 show the first trap obstacle in more detail, Figures 12-14 show the EXAMPLES Different variants of the outlet barrier for the water trap, Fig. 15 is a second embodiment of the floor drain body, Fig. 17 is said body seen from above, and Figs. 16 and 18 are details of said body.

Detailed ways

As is evident from the figures, the fixed main part 1 of the floor drain comprises an upper opening 2 and a circular flange 3 projecting radially from this opening. Just below the opening there is provided an inwardly extending step or shoulder 4 with a short cylindrical wall 5 between the shoulder and the opening. The fixed part 1 of the floor drain tapers slightly downwards towards the flat bottom 7 at the lower part 6 . Horizontal pipes 8 extend transversely for connection to the sewer system. As seen in FIGS. 4 and 5 , above the shoulders, in the cylindrical wall 5 , alternating grooves 9 and ridges 10 are arranged.

In FIG. 5 it is shown how a floor material 11 eg in the form of a plastic floor or some other sealing layer is arranged on the floor drain and the sealing layer has been bent or formed down into the floor drain so that the bottom side will be in contact with said ridge 9 . The plastic floor material is pressed against the ridge 9 by a rubber clamping ring 12 which has been pushed down into the floor drain and is supported on the inside by a metal or plastic ring 13 and which has an L-shaped cross section . The clamping ring 12 is provided with a downwardly protruding, circumferentially extending bead 14 which presses downwards on a floor drain insert 15 which in turn presses on an O-ring arranged in the shoulder. The grate of the floor drain rests on this clamping or supporting ring.

The aforementioned connection to the floor material 11 ensures a good seal. Firstly, the outer rubber ring of the clamping ring seals on the surface of the flooring material and on the floor drain insert 15 on the shoulder 4 and thus prevents water from entering between the flooring material and the inside of the floor drain. Furthermore, the pressing of the bead 14 and the floor covering on the surrounding ridge 9 ensures a seal which prevents water from entering between the floor and the floor covering and the floor drain. In other words, two-step sealing is achieved. If desired, the cylindrical portion 5 can be made so that it slopes slightly inwards and upwards, ensuring that the clamping ring is always squeezed downwards when installed. Alternatively, the rubber ring 12 can be shaped with an upper edge that is higher on the outside, so that it becomes wider when moving upwards, ensuring stable seating and outward and downward pretension.

The support ring comprises on its upper side a horizontally outwardly directed flange which serves as a contact portion when the clamping ring 12 is depressed. The clamping ring is seated so well after installation that in order to remove it, first the support ring 13 has to be pulled up. If the support ring and clamping ring are vulcanized together, it may be necessary to break the clamping ring in order to loosen it.

The rubber clamping ring and support ring may be glued or vulcanized together, but preferably they are separate. When installing the clamping and sealing rubber ring, it is preferably done with the support ring on its inside. In this way, the clamping ring will be firmly pressed against the floor covering during the downward movement, pulling it firmly downwards on the floor drain housing. On the other hand, when the clamping ring is to be removed, first the support ring is removed, which is easier to grip and can exert a greater pulling force than the clamping ring. Upon removal of the support ring, the radial pressure on the clamping ring is reduced and the flexible clamping ring can be removed, allowing removal of the floor drain insert. Thus, removal of the clamping ring does not lead to an undesired upward pulling of the floor in the floor drain inlet.

If friction alone does not give sufficient holding force between the support ring and clamping ring, the support ring and clamping ring may be provided with cooperating grooves and ridges.

The clamping performance or locking force against the upward thrust of the clamping ring with its support ring is considerable and exceeds the thrust of a person standing on the fence. In Fig. 18, an alternative cross-sectional shape of the upper portion of the main body of the floor drain is shown.

In Fig. 10, an inlet insert 15 for a floor drain is shown, comprising an upper funnel-shaped portion 16 which transforms at its upper end into a flat circular flange 17 which The flange is intended to be placed, for example, under the aforementioned clamping ring 12 with a sealing ring 18 between the flange 17 of the insert 15 and the shoulder 4 ( FIG. 5 ).

The funnel-shaped part 16 of the insert transforms at the lower end into a vertical tube 19 in which an inner tube 20 is displaceably arranged with a seat 21 arranged at the upper end and on which a ball 22 is placed. Below the support. The ball and seat together form a one-way valve by the ball being filled with air and by the water in the water trap pressing the ball upwards on the seat. The tube providing the ball seat is displaceable in height for adjustment so that the ball can be pressed down into the floor drain by the weight of the water in the funnel-shaped portion without the water being above the edge of the floor drain and the ball is otherwise held by the drain. The water in the floor drain lifts up. The inner tube 20 is provided with an outwardly facing flange 23 at its lower end, which prevents the inner tube from being pushed upwards out of the outer tube 19 under excessive pressure in the sewer system or in the water trap. However, if for example a supplementary ring has been used to raise the top of the floor drain, the inner tube can be pulled down to keep the ball afloat. In this case, a distance element in the form of a short tubular piece 24 is arranged between the outward flange 23 of the inner tube 20 and the lower end of the outer tube 19 in order to prevent the inner tube from lifting. This pipe piece advantageously has the same height as the supplementary ring for the floor drain. A sealing ring is arranged between the vertical tube 19 and the inner tube 20 providing a seat. In an alternative embodiment, the seat may be of an elastic material such as rubber, and in practice also allow for a seal between the seat and the vertical tube 19 .

The flange 17 has a corresponding recess in the funnel-shaped part, a circular groove 26 is arranged in an inward widening 25 of the flange 17 and a downwardly facing socket 27 is arranged on its outer side. The material on the inside of the trough can be broken to provide an opening through which the pipe 28 from the washstand, shower, sink or bathtub can be pushed down through the intermediate seal. This tube is pushed down so that its lower end terminates below the water level 29, so that this connection (tube 28) also constitutes the upper trap screen or lip. The water flows down directly into the floor drain on the outlet side of the non-return valve, which consists of a ball and seat. This way, there is no danger of flooding the floor when, for example, water is released from the bathtub. In addition, the fast supply of water can effectively clean the floor drain. Of course, it is also possible to incorporate a non-return valve into the further inlet from the bathtub or washbasin.

In Fig. 6, a portion 30 constituting the outlet threshold in the water trap is shown. This threshold part 30 is intended to be pushed into the outlet pipe 8 of the floor drain. The sill portion 30 is substantially tubular with a pair of outer sealing rings 31 or bead (if the sill portion is made of rubber or other elastic material). At its end facing towards the inside of the floor drain, the tube transforms in shape into a terminal circular wall 32 which extends up to an opening 33 . Water can thus flow over the edge of the opening 33 and out into the outlet, and this part together with the downwardly extending tube part of the funnel part forms a water trap which holds the water in the floor drain.

In Figures 12 and 13, alternative shapes for the rocker portion are shown. The variant in Figure 13 consists of a rubber tube 35 provided with a sealing flange and semi-closed at its end facing towards the floor drain by an end 36, forming an outlet sill for the water.

By having the sill part 30 or 35 made of rubber or having a seal and having suitable dimensions, the sill part can be easily removed when the outlet of the floor drain has to be cleaned and made accessible by the entire cross-section of the outlet pipe. Cleanup is especially convenient.

In Figs. 14a-g another outlet insert variant is shown with a wide, slightly flattened funnel part inside the floor drain and a tube part provided with a seal. The funnel-like portion is wider than the cross-section of the outlet tube, preventing the insert from being pushed out through the outlet, and also providing a good grip for removing the insert for cleaning.

If desired, the water level in the floor drain can be adjusted by rotating the protruding water trap insert about its axis for proper function of the check valve. In particular, the variant shown in Figures 12 and 13 provides a large degree of height adjustment. It is desirable to have the right amount of water in the floor drain to keep the water trap from drying out, a check valve in the form of a ball and standoff also helps to keep the water trap from drying out as there is no open water surface for the water to evaporate to the top of the floor drain surroundings.

Instead of placing the outer flange of the inlet funnel with the water trap screen and non-return valve under the clamping ring, consider placing it on top of this clamping ring, held by a second clamping ring . This has the advantage that cleaning can be carried out without disturbing the clamping of the floor material or the seals in between.

In order to enable cleaning without removing the clamping ring, it is conceivable to arrange an opening with a removable rubber closure in the upper water trap part 15 above the opening 33 in the sill part 30 .

The basic advantage of the above-mentioned water trap part is that it can be installed respectively in many floor drains and water leaks existing today, thereby improving their function and at least significantly reducing the risk of water damage.

In FIG. 1 , a conventional floor drain is shown with an upper lip 50 , a lower sill 51 , a blocked volume 52 in the main floor drain portion 53 . Water can run down from the floor through the grate 54 or from the bathtub through the pipe 55 into the floor drain. Light contaminants such as skin deposits and fat rise to the surface in the blocked volume 52 and remain as a top layer, while water undisturbed this layer can flow out under the upper lip 50 and thereafter over the sill 51 .

However, in the inventive floor drain, light contaminants will be transported past the first lip due to water velocity into the blocked off area where the flow is slow, allowing time for light contaminants to rise to the surface and then exit in the outlet Obstructions are removed to keep the interior of the drain free of organic matter that could otherwise cause odor and unhealthy decomposition inside the drain.

In the bottom 60 of the floor drain (Figs. 15 and 16), three (possibly more) short pipes or receivers 61 are arranged vertically downwardly oriented or possibly diverging to some extent from each other. The tubes are sized such that plastic tubes 62 of the type used to mount electrical leads can be inserted, or concrete pins can be inserted. Preferably, the fitting of the tube is such that the height and angle of the floor drain can be adjusted not only by cutting but also by adjusting the insertion depth of the tube or pin. For this purpose, the short tube integral with the bottom can be provided with a small number of internal longitudinal ribs. As an alternative, the pipe can be arranged on the side of the floor drain for insertion into the support legs. In this way, the adjustment span can be increased, and it is not necessary to cut off the short pipe integrated with the bottom of the floor drain when there is no or little space available below.

Today, floor drains are usually held by a wooden block that is placed immediately below the drain before the concrete is poured. The flow of concrete can be powerful and can easily wash away these pieces of wood or other loose distance elements.

The many purposes that a floor drain must fulfill were mentioned at the beginning, however, for good function it is not only necessary to add these features in any order, but they should be related to each other to provide optimum performance.

The main purpose of the floor drain is of course to drain the water without allowing the odor or bacteria to return, preferably even if the floor drain has not been used for a long time. Beyond that, it is also desirable that the floor drain is as maintenance-free as possible, but if required, can be cleaned with as little fuss and disruption as possible. The added hope is of course that the water should not leak into the building. More recently, floor drains are expected to withstand high back pressures in the event of gas damage to the sewer system. Effective rat stops are also helpful. The check valve together with the very effective clamping ring will effectively prevent dirty water from flowing back into the drain, contaminating the drain and the floor above it.

Embodiments of the floor drain of the present invention meet all of these requirements.

Claims (34)

1. A floor drain with a water trap comprising an upper strainer or lip (20, 28) and a lower strainer or threshold (3) extending to a length greater than that of the upper strainer The height of the lower edge is high, and the water flows first under the upper screen and then above the lower screen, characterized in that the inlet portion up to the lower edge of the upper screen has a small cross-section or volume, so that the inlet The flow becomes faster to prevent clogging. 2. The floor drain according to claim 1, characterized in that, the space blocked between the upper filter screen and the lower filter screen is larger than the space for entering the flow of the first filter screen protruding downward from above, so that light Contaminants can rise to the surface and be washed away over the edge of the second screen protruding from below. 3. The floor drain according to claim 2, wherein the blocked space occupies the entire interior of the floor drain except the relatively narrow inlet and outlet. 4. A floor drain according to any one of claims 1-3, characterized in that the floor drain is provided with an inlet valve comprising a ball which floats on the water in the floor drain and is pressed upwards by the water on the seat , to prevent backflow and evaporation of water from the water trap. 5. A water trap especially for floor drains or leaks, the water trap comprising an upper screen or lip (20, 28) and a lower screen or threshold (3) extending to a lower The lower edge of the upper screen has a high height and the water from the inlet first flows under the upper screen and then above the lower barrier to the outlet, characterized in that a pipe sealed on the outlet pipe is inserted in the outlet (30; 35), said inserted pipe is provided with a barrier (33) extending upwards from below and constituting an outlet barrier of the water trap. 6. Water trap according to claim 5, characterized in that said inserted tube (30) in the inlet end is closed by a circular wall (32) and an upwardly facing opening (33). 7. Water trap according to claim 5, characterized in that the tubular insert has a funnel-shaped inlet with an upwardly facing opening, enabling a high-height outlet with a large cross-section. 8. A water trap according to claim 5, characterized in that the pipe insert (35) has an inner partition covering a part of the cross-section of the pipe, for example half of the cross-section. 9. A water trap according to claim 7, wherein the funnel is wider than said cross-section of the outlet pipe, preventing the insert from being pushed into the outlet and providing a good grip for removing the insert . 10. An insert especially for being inserted in the outlet of a floor drain or a water leak, characterized in that the insert comprises a pipe part (30; 35) having an outer seal for sealing on the inner side of the outlet pipe The seal, said tube part is provided with a barrier (33) extending upwards from below and serving to constitute an outlet barrier of the water trap. 11. Insert according to claim 10, characterized in that the tube (30) is closed in one end by a circular wall (32) and an upwardly facing opening (33). 12. Insert according to claim 10, characterized in that the tubular insert has a funnel-shaped inlet with an opening facing upwards, enabling a high-height outlet with a large cross-section. 13. Insert according to claim 10, characterized in that the tube (35) has an inner partition covering a part of the cross-section of the tube, for example half of the cross-section. 14. Method of providing a water trap for water outlets, water leaks or floor drains, characterized in that an insert according to any one of claims 11-14 is inserted into an outlet pipe so as to provide the outlet pipe with an outlet threshold or barrier thing. 16. Method for cleaning and/or inspecting outlet pipes of water traps in water outlets, water leaks or floor drains, characterized in that an outlet insert according to any one of claims 11-14 is removed. 17. An inlet insert for floor drains, water leaks or water outlets, characterized in that it comprises a downwardly extending tube (19) in which an internal movable tube (20) is hermetically arranged tube (19), the inner movable tube (20) is provided with a seat (21) in its upper end so that the ball (22) is arranged below the seat, and said inner tube is provided with structures (23, 24 ), the structure (23, 24) prevents the inner tube from being pushed upwards from the different adjustable heights for the stand. 18. Inlet insert according to claim 17, characterized in that said inner tube is provided in its lower end with an outwardly directed flange (23) for abutting against said downwardly extending tube (19) ) or the lower end of one or several short pipe pieces (24) having the same diameter as said downwardly extending pipe and serving as said flange and said downwardly extending pipe The distance between the lower parts. 19. An inlet insert as claimed in claim 18, characterized in that the distance piece is at the same height as the extension ring for the floor drain or weep. 20. Floor drain or water leak, characterized in that it is provided with an inlet insert according to any one of claims 17 to 19. 21. Water trap, characterized in that it is provided with an inlet insert according to any one of claims 17 to 19. 22. Clamping structure for fixing a floor or sealing membrane on the inner side of a floor drain, water leak or water outlet, characterized in that the clamping structure comprises an elastic clamping ring (12) of rubber or similar, the elastic clamp A tightening ring is arranged to press the floor edge or the inner edge of the sealing membrane against the inner edge of the floor drain, said clamping ring (12) being provided on its inner side with a supporting ring ( 37). 23. Clamping arrangement according to claim 22, characterized in that the support ring is provided with an outwardly directed upper flange (38), for example giving the support ring an L-shaped cross-section. 24. Clamping arrangement according to claim 22 or 23, characterized in that the clamping ring has a downwardly extending bead (14) intended to seal against, e.g. On the upper side of the transverse flange on the insert, or seal on the shoulder on the inside of the floor drain, water leak or floor outlet. 25. Clamping arrangement according to any one of claims 22 to 24, characterized in that the support ring and the clamping ring are separate parts, in particular allowing the clamping to be released by first removing the support ring ring. 26. Floor drain, characterized in that the floor drain is provided with a clamping ring according to any one of claims 22-25. 27. Floor drain, spout or other water outlet characterized by a vertical tubular receptacle (61) or similar on the bottom (60) or on the side for direct support on a floor/roof on the cast panel of the wall, or for inserting a support extension (62) into the receptacle. 28. Floor drain, gutter or other water outlet, characterized in that the support extension is a plastic tube (62), such as the type used for electrical conductors in a ceiling or wall, or alternatively a concrete pin. 29. Method for adjusting the height and inclination of a floor drain, gutter or other water outlet according to claim 27 or 28 before pouring the surrounding concrete, characterized in that the tubular receptacle itself is shortened by a sufficient amount, Or the tubes or pins inserted into the receptacle are adjusted to their length and/or insertion depth into the receptacle. 30. Floor drain comprising an outlet insert according to any one of claims 11 to 14 and an inlet according to any one of claims 17 to 19. 31. A floor drain as claimed in claim 30 and any one of claims 1 to 3. 32. A floor drain according to claim 30 or 31 and comprising a one-way valve in the inlet, the one-way valve comprising a floating ball and a seat above the ball. 33. Floor drain, characterized in that it comprises a clamping ring according to any one of claims 22 to 25 and in the inlet a non-return valve comprising a floating ball (22) and the Standoff (21) above the ball. 34. Floor drain, characterized in that it has a trap inlet part (16) provided with a structure (26, 27) allowing additional connections from eg a bathtub, shower or washstand The connector (28) is plugged in, and this connector can be pushed down sufficiently to constitute the first upper screen of the water trap function. 35. Floor drain, characterized in that a seal is arranged between a shoulder (4) or similar in the floor drain and a circumferentially extending flange (17) on the inlet part (16) of the water trap.

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