CN1088495C - Filtering stairway for swimming pool - Google Patents

Abstract

A filtering stairway for a swimming pool is characterized by a combination of the following arrangements: the body (1) of the stairway defines a closed and hollow volume obtained by rotational moulding to constitute a tank (1a) with steps (1b) on its front part; the tank (1a) communicates with the water in the pool; the tank (1a) has internal arrangements to allow the installation of a filtering system (3, 4) communicating with the water contained in the said tank (1a); the surface (1f) of the body (1) opposite to the one with the steps (1b) is provided with fixtures (1g, 1h) for the installation and the fixing of a box (2) obtained by rotational moulding and in which are fitted suction and discharge means (7) combined with the filtering system (3, 4). The body (1) includes lateral means for fitting adjacent panels forming the swimming pool.

Description

swimming pool filter ladder

technical field

The invention relates to the technical field of water filtration for swimming pools.

Background technique

There are currently several technical solutions for the filtration of swimming pool water. Among them, the filtration is realized by one or several filters connected to the pumping and pressing water lines.

It has been proposed, for example, to incorporate pumping or filtering means in a compact unit connected to the walls forming the swimming pool. A part of the device is submerged in water and connected to a filter device, and the other part is outside the swimming pool and equipped with a water pumping and pressure device connected to the filter device.

This solution is described, for example, in patent EP-A-0145619. The part submerged in the water may have a device that acts as a step.

However, for convenience, consumers often request that swimming pools be equipped with ordinary steps, generally round steps that are often placed at the end of the swimming pool. These stairs, due to their shape, are called Romanesque stairs.

It has also been proposed to implement a Romanesque filter ladder on the basis of the same principle of said patent EP-A-0145619. The part submerged in the water is circular, integrated with the steps of the ladder, and connected to the filter system. The submerged part is connected with the ground part where pumping and pressing devices are installed. The submerged part is not inserted into the swimming pool wall, but is superimposed on the latter, said wall having to be adapted to define a circular surface corresponding to the stepped surface.

After fixing said two parts of the ladder relative to the swimming pool wall, there is a free space between the back of the ladder and the front of the profiled wall, which will be filled with water. As a result, leaves or other debris can accumulate in this gap, which presents some serious problems for the maintenance of the entire swimming pool.

There are also designs such as patent EP-A-0279140, which relate to a module formed from a prefabricated module realized in polyester reinforced resin, which includes a ladder with several steps close to a cabinet and a filter box. However, the production technology of this component is not reasonable, and there may be problems in sealing.

Contents of the invention

The object of the present invention is to overcome these drawbacks in a simple, safe, effective and rational manner.

The problem to be solved by the present invention is to realize the filter ladder used to be directly installed with the adjacent wall panels of the swimming pool, and at the same time solve the problem of sealing. At the same time, it retains its strong and effective filter ladder, and can add some additional functions.

In order to solve such problems, such a swimming pool filter ladder is designed, which is characterized in that it is composed of the following devices:

- a stepped body defining a hollow enclosure rotationally molded to form a container with a stepped front,

- said container is in water communication with the swimming pool,

- said container has internal means suitable for installing a filtration system in communication with the water in said container,

- on the side of the body of the ladder opposite to the stepped side there are means for mounting and fixing a rotationally molded tank containing pumping and pressing water connected to the filtration system,

- On the sides of the main body there are means for fixing the adjacent panels forming the swimming pool.

This filter step system is produced by rotational molding, a technique well known to those skilled in the art but which has never been used to manufacture filter steps before. This rotational molding technique is of particular interest in the application in question, where during production it is directly possible to obtain completely sealed containers in which filter devices combined with some special devices can be inserted.

In order to solve the problem of being able to easily mount the stepped body used as a filter system container, the internal means for mounting the filter system consist of ribs formed directly on the bottom of the container during the rotational molding process, which can jointly support a A support plate for connecting parts connected to the filter system.

In order to solve the problem of ensuring filtration, the connection part is formed by an elbow pipe arranged between two ribs, one end of the pipe passes through the support plate, so as to connect with the bottom of at least one support with filter bags, the other end of the pipe One end leads to a container connection to a tank fitted with a pumping device.

In order to solve the problem of installing the filter system in the stepped main container, the upper part of the support with one or several filter bags is sealed and connected with a cover plate, and the latter itself is also integrated with the channel on the upper part of the container in a sealed manner. The channel communicates with an inspection hole, which is closed by a removable cover.

To solve the problem of pumping and pressing water together with the filtration system, the pipe installed in the plate and connected to the filtration system is connected to the water inlet of the pump, and the discharge port of the pump is connected to the pipe leading to a step of the container.

To solve the problem of ensuring fixation relative to the container, the mounting and fixing device for the tank for mounting the suction and pressure pumps consists of supports and alignment prefabricated parts, said supports being formed during the rotational molding of the container, The box is supported thereon, and the alignment prefabricated part fits an opening in the box, the prefabricated part is hollow, and can accommodate the suction pipe and the pressure water pipe.

Another problem that the present invention is intended to solve is the addition of other functions within the filter ladder.

To this end, during rotational molding, ribs with some recessed spaces between each other are formed directly on the horizontal surface of a step to communicate with an air inlet connected to a part in the cabinet through a tube, said step is equipped with a microplate.

To solve the problem of ensuring the fixation of the step system at the junction of the panels constituting the swimming pool, the fixation means of the adjacent panels consist of wings in which metal inserts for receiving the fixing parts are embedded.

To solve the problem of ensuring that the ladder fits together with the liner that is usually installed inside the swimming pool, there is a U-shaped flange on the front of the container at the level of the step, on which is mounted a screw seat with a washer for fixing the liner cut into a U shape pads, the latter being fixed to said screw seats by screws covered with protective strips.

According to another feature, a plinth is provided with means to mount at least one light during the rotational molding process.

Description of drawings

Describe the present invention in more detail below with reference to accompanying drawing, in the accompanying drawing:

Figure 1 is a front perspective view of the filter ladder before it is installed in the chassis.

Fig. 2 is a rear view corresponding to Fig. 1 .

Figure 3 is a top view of the ladder.

Fig. 4 is a front view corresponding to Fig. 1 .

Fig. 5 is a sectional view along line 5-5 in Fig. 3 .

Fig. 6 is a cross-sectional view along line 6-6 in Fig. 5 .

Figure 7 is a longitudinal sectional view of the ladder assembly showing the installation of the pumping and pressing system in combination with the filtering device.

Fig. 8 is an enlarged sectional view taken along line 8-8 of Fig. 4, showing the pad securing means.

Figure 8a is a cross-sectional view showing a preferred embodiment of the pad securing device.

Figure 9 shows the installation of a filter ladder in combination with adjacent wall panels of a swimming pool.

Fig. 10 is a cross-sectional view along line 10-10 in Fig. 3 .

Fig. 11 is a longitudinal sectional view of the bottom part of the device.

Fig. 12 is a cross-sectional view along line 12-12 in Fig. 11 .

Fig. 13 is a cross-sectional view along line 13-13 in Fig. 11 .

Detailed ways

As shown, the filter step body 1 defines a rotationally molded hollow closure forming a container 1a. The front of the container is in the shape of a step 1b. More specifically, the main body 1 is semicircular in plan view (FIG. 3), and angular in lateral view (FIG. 5). Furthermore, during rotational molding, the filter step body 1 directly forms the chamber 1c in which the filter system is placed, as will be described shortly below.

To increase the rigidity of the main body 1, many horizontal ribs 1d and vertical ribs 1e are formed directly on the main body during the rotational molding process.

On the face 1f of the stepped body 1 opposite to its stepped face 1b, there are means for mounting and fixing the rotationally molded cabinet 2. The housing 2 is generally in the shape of a parallelepiped. Said means on the face 1f consist of supports 1g formed during the rotational molding of the step body 1, protruding from said face 1f. These supports 1g constitute two gussets on which the box 2 rests. In addition, there is an alignment prefabricated part 1h on the upper part of the surface 1f of the main body 1, which is roughly rectangular, and is used to cooperate with a complementary opening of the tank 2. Through, to assemble it, as described later, these suction pipes are connected with the pressure water pipe and the filter system with the pumping system.

Regarding the filter system, it consists of at least one filter bag 3 placed in a cylindrical holder 4 . This filter system is not described in detail in this specification, it is preferably of the kind described by the applicant in his patent FR8913638. The filter system 34 is connected to a support plate 5 which rests on two ribs 1d1, 1d2 at the bottom of the container. The support plate 5 is connected to the suction pipe TA via an elbow 6 between the two ribs 1d1, 1d2.

One end 6a of the suction pipe passes through the support plate 5 and connects with the bottom of the support 4 with the filter bag 3, especially through a metal mesh filter pipe.

The other end 6b of the tube 6 leads to the alignment preform 1h. The end 6b of the pipe 6 passes from the alignment preform 1h for connection in a sealed manner to the water pumping system inside the cabinet by any suitable method known in the art.

In particular, the suction pipe TA is connected to the water inlet of the pump 7 inside the tank 2 . The pump is preferably a two speed pump.

The pressurized water pipe TR connected to the corresponding nozzle of the pump 7 is connected in a sealed manner to the pipe 8 previously placed in the container 1a, and passes through the nozzle 8a, especially at the step-skirt.

The upper part of the support 4 holding the filter bag 3 is hermetically connected to a cover plate 9 which itself is hermetically integrated with a chamber 1c which roughly constitutes a channel.

Thus, the filtration system 34 is placed in the container 1a, in communication with the swimming pool water, which flows into said container through a hole 1i equipped with, for example, a skimmer. This hole 1i is, for example, in the upper skirting of the steps.

Thus, as is well known, the pool water fills the container 1a from the hole 1i, flows through the filter bag 3, passes through the pipes 6 and TA, is sucked in by the pump 7, and finally passes through the pipes TR and 8, and is discharged by said pump 7.

Obviously, under the conditions described, several filter systems and pumping systems can be installed in the container 1a and the tank 2. The channel-shaped chamber 1c communicates with an inspection hole 1j covered with a removable cover 10 .

Considering that the stair body 1 and the casing 2 are realized in rotational moulding, in particular of a hollow stair body, said case 2 is completely isolated from the stair body 1 in a sealed manner.

As mentioned before, the stair body 1 serves as the container 1a, and therefore, is always filled with water from the swimming pool. To avoid the growth of bacteria or other substances, it is important to circulate the water in the container to avoid stagnation. For this purpose, there are special devices at the bottom of the container.

As shown in Figures 11, 12 and 13, the bottom of the container has a concave cavity 1a1 protruding from the back 1f of the main body 1 to form a heightened bottom 1a2 relative to the ground seat 1a3, which is U-shaped and hollow inside . The raised bottom 1a2 is smooth, in a horizontal plane at the same height as the first step of the ladder from the bottom, so as to be in line with the opening 1m in the corresponding skirting board. The seat 1a3 is filled with a light material such as foam M and covered with a layer such as mortar m, which is smooth to connect to the raised base 1a2.

There is a pipeline R connected to the pressurized water pipe on the raised bottom. The pipe sprays out a lot of water to wash away dirt or other things that may have accumulated on the raised floor, and then flows into the swimming pool from the opening 1m to achieve water circulation and at the same time make the water flow through the filter system.

Thus, these devices prevent the growth of bacteria or other things on the bottom of the container.

As mentioned before, the raised bottom 1a2 is formed by the concave cavity 1a1. In this case, in order not to reduce the rigidity of the container, a cabinet bracket 18 composed of many reinforcing ribs 18a is built into the concave cavity. The chassis bracket 18 is fixed on the main body 1 in any suitable manner known in the art.

According to another feature, during the rotational molding process, the ribs 1b1 with some recessed spaces between each other are formed directly on the level of a step 1b, in order to communicate with an air inlet, which communicates through a tube 12 with the inside of the cabinet 2. A part connected. A microwell plate 13 is provided on the step 1b with ribs 1b1.

It is also possible to install means on at least one skirting board for at least one lamp PR.

The front face of the main body 1 at the level of the step 1b has a U-shaped flange 1k. In the thickness of the flange 1k there is a groove 1k1 in which the screw seat 14 with the washer 15 is fastened, in particular adhesively. These means hold the U-cut liner L in place by screws screwed into the screw seats 14 . The screw seat assembly is covered with a protective strip 16 .

As shown in FIG. 8A, the screw seat 14 is preferably not in the groove, but outside the groove, that is, in the container 1a, so as to solve the sealing problem at the joint corners of different components of the screw seat.

Finally, the front of the ladder body 1 has wings in which metal inserts are embedded for sealingly fixing the ladder system and the other panels P that make up the swimming pool. Metal inserts are also provided on a part of the periphery of the body 1 to fix vertical grooves whose section is adapted to receive concrete.

Of course, the cabinet 2 housing the pumping system is sealed by a removable cover 17 .

Advantage of the present invention has manifested clearly in foregoing description, and it is particularly important to point out that:

- Hollow and completely sealed steps can be made by rotational molding,

— can reduce production costs,

- Additional functions can be added,

- The filter ladder system can be installed in a sealed manner in connection with the other sidings making up the swimming pool.

Claims (14)

1. A swimming pool filter ladder, including a main body (1), one side of which is in the shape of a step (1b), characterized in that: - said stepped body (1) defines a rotationally molded hollow closure to form a container (1a), - said container (1a) communicates with the swimming pool water, - inside said body (1) there are internal means suitable for installing a filtration system communicating with the water in said container (1a), - On the face (1f) of the step body (1) opposite to its stepped (1b) face there are means (1g, 1h) for mounting and fixing a rotationally molded case (2), the case A pump (7) for pumping and pressing water connected to the filtration system is housed inside, - Said body (1) is flanked by means for fixing the adjacent panels forming the swimming pool. 2. A filter ladder according to claim 1, characterized in that the internal means for mounting the filter system consist of ribs (1d1, 1d2) formed directly on the bottom of the container (1a) during rotational molding, said The ribs can collectively support a support plate (5) with connection parts to the filter system. 3. The filter ladder according to claim 2, characterized in that, the connecting part is formed by an elbow (6) between the two ribs (1d1, 1d2), and one end (6a) of the pipe (6) extends from the supporting plate (5), pass through, and join with the bottom of at least one support (4) that filter bag (3) is housed, and described pipe (6) other end (6b) leads to container (1a) and dress pump (7) ) box (2) connected to the device. 4. The filter ladder according to claim 2, characterized in that, the upper part of the support with one or several filter bags is sealed and connected with a cover plate (9), and the cover plate itself is connected with the channel ( 1c) Integral, the channel communicates with an inspection hole (1j), which is closed by a removable cover (10). 5. The filter ladder according to claim 3, characterized in that the pipe (6) installed in the plate (5) and connected to the filter system is connected to the water inlet of the pump (7), and the outlet of the pump is connected to the It is connected to the pipe (8) on a step of the container. 6. The filter ladder according to claim 1, characterized in that, on the bottom of the container (1a) there is a concave cavity (1a1) protruding from the back side (1f) of the main body to form a raised seat (1a3) relative to the ground The bottom (1a2), the ground seat is U-shaped, hollow inside, the raised bottom is in line with the opening (1m) in the skirting board, and the interior is filled with light material to match the raised bottom (1a2 )connect. 7. The filter ladder according to claim 6, characterized in that the concave cavity (1a1) forming the raised bottom (1a2) is closed by a housing bracket (18) formed by a plurality of reinforcing ribs (18a). 8. The filter ladder according to claim 6, characterized in that there is a pipe (R) connected to the pressurized water pipe on the raised bottom (1a2), and the installation of the pipe is to wash away the dirt that may accumulate on the raised bottom , to discharge it into the swimming pool through the opening (1m). 9. The filter ladder according to claim 1, characterized in that the installation and fixing device of the tank (2) containing the suction and pressure pump (7) is composed of a support (1g) and an alignment prefabricated part (1h) , the support is formed during the rotational molding of the container, on which the tank is placed, the alignment preform fits into an opening in the tank (2), this preform (1h) is hollow and accommodates the suction pipe with pressurized water hose. 10. The filter ladder according to claim 1, characterized in that, during the rotational molding process, ribs (1b1) with some recessed spaces between each other are directly formed on the horizontal plane of a step (1b), so as to be compatible with an air inlet In communication, the air inlet is connected to a component in the cabinet (2) through a pipe, and a micro-orifice plate (13) is arranged on the step. 11. Filtering ladder according to claim 1, characterized in that the fixing means of the adjacent wall panels consist of wings (1k) embedded with metal inserts for receiving the fixing parts. 12. A filter ladder according to claim 1, characterized in that a part of the periphery of the body (1) has metal inserts for fixing vertical grooves whose section is adapted to receive concrete. 13. The filter ladder according to claim 1, characterized in that there is a U-shaped flange on the front of the container (1a) at the plane of the step (1b), which can be inserted into the screw seat (1h) with gasket (15) , for fixing the liner, by means of screws covered with protective strips (16), the U-shaped liner is fixed on the screw seat. 14. The filter ladder as claimed in claim 1, characterized in that, during the rotational molding process, means are provided for mounting at least one lighting lamp (PR) on a plinth.

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