Device for cleaning a glazed surface

Abstract

The invention relates to a device (10) for cleaning a glazed surface, comprising: • - a frame (14), • - at least one cleaning roller (15) mounted on the frame (14) so as to be rotatable about a longitudinal axis (L) and comprising externally a cleaning fabric (20), • - means for supplying a cleaning liquid in contact with the cleaning fabric, these supply means being carried by the frame (14) and being configured to supply cleaning liquid at a longitudinal zone (32) of the fabric, • - means for wiping the roller (15), • - means for collecting the waste water, which comprise a longitudinal bowl, • - the means for wiping the roller are angularly interposed between said longitudinal zone (32) of the fabric and the bowl.

Description

Description Title: Device for cleaning a glass surface

[0001] The present invention relates to a device for cleaning a glass surface. Prior art

[0002] It is known to clean glass surfaces using a pole with a squeegee. However, this type of pole is difficult to maneuver and does not allow for optimal cleaning of the glass surface, particularly in the high position due to the difficulty in exerting pressure on the surface. Indeed, this type of pole results in insufficient cleaning due to an angle of inclination with the glass surface that is too small to be able to exert sufficient force on the glass surface.

[0003] To overcome this difficulty, devices are known comprising rollers rotating around a longitudinal axis and mounted at the distal end of a pole. However, this type of device does not allow working at height and does not allow the recovery of used water, which leads to the formation of drips on the glass which cannot satisfy the user.

[0004] Water-powered brushes are also known. While they can be effective for cleaning, they require significant water consumption, which is incompatible with mobile use, requiring a connection to a fixed water supply line. Furthermore, using a brush requires the subsequent use of a squeegee or any other means to remove excess water from the window.

[0005] It is therefore understandable that existing solutions do not allow working at height and do not ensure satisfactory cleaning of the glass surface with a single device while guaranteeing low water consumption.

[0006] The invention aims to remedy the aforementioned difficulties. To this end, it proposes a device for cleaning a glass surface, comprising: a frame, at least one cleaning roller mounted to rotate about a longitudinal axis on the frame and externally comprising a cleaning fabric, means for supplying a cleaning liquid into contact with the cleaning fabric, these supply means being carried by the frame and being configured to supply cleaning liquid to a longitudinal zone of the fabric, means for wringing out the roller, wastewater collection means which comprise a longitudinal bowl, the roller wringing means are angularly interposed between said longitudinal zone of the fabric and the bowl.

[0007] According to the invention, the cleaning device comprises wringing means which allow continuous wringing of the cleaning fabric, preventing dirty water from remaining on the fabric. The arrangement of the wringing means of the roller angularly between said longitudinal zone of the fabric and the bowl thus allows the waste water to be recovered in the bowl.

[0008] It is understood that when the device is mounted at the distal end of a pole, the wastewater is collected by gravity in the bowl. The combination of a fabric, preferably a microfiber fabric, and wringing means allows the wastewater stored in the fabric to be removed at each turn and the fabric to be supplied with cleaning liquid after scraping. The device thus makes it possible to significantly reduce water consumption, which makes it possible to have a portable device since it is no longer necessary to connect it to a fixed water circuit.

[0009] According to another characteristic, the bowl has a longitudinal dimension greater than or equal to the longitudinal dimension of the cleaning fabric. The bowl may have a plane of symmetry substantially perpendicular to the longitudinal axis of the roller. Said plane of symmetry may pass through a wastewater discharge orifice of the bowl. In a variant, the bowl may not be symmetrical with respect to said aforementioned plane.

[0010] The collection means may comprise a concave curved wall arranged in the immediate vicinity of the fabric connected to a collection wall so as to form a leading edge facing the wringing means. In one embodiment of the invention, said concave curved wall is arranged at a distance of between 0.5 and 2 mm from the external surface of the fabric. The curved wall can have a constant radius profile. In this way, the face of the curved wall facing the fabric perfectly matches the shape of the roll.

[0011] The leading edge is straight and parallel to the longitudinal axis. The leading edge could also comprise two parts converging towards each other from opposite longitudinal ends, and for example to a plane perpendicular to the longitudinal axis and passing through a waste water discharge orifice. In the latter case, said two leading parts could be curved.

[0012] The collection wall may have a trailing edge comprising at least one portion extending from a longitudinal end of the collection wall to a wastewater discharge orifice of the bowl. In a particular configuration, the trailing edge comprises two portions converging towards each other from opposite longitudinal ends, and for example to a plane perpendicular to the longitudinal axis and passing through a wastewater discharge orifice.

[0013] The wringing means may comprise a scraper carried by the frame, the scraper comprising a longitudinal scraping edge of the roller which is arranged in contact with said roller. The scraping edge penetrates the fabric at an angle to facilitate wringing of the fabric. Preferably, the angle will be between 0° and 45° relative to a plane containing the axis of rotation of the roller. This angle is measured relative to the direction of rotation of the roller. Preferably, the angle is between 15° and 35°.

[0014] According to another feature, the scraper penetrates the fabric to a depth of between 75 and 85% of the thickness of the fabric, preferably 80%.

[0015] The scraper may comprise a substantially flat plate comprising a first face facing the bowl and a second face facing the liquid supply means, the first face extending along an extension plane forming an angle of at least 20° with a plane containing the longitudinal axis of the roller, the extension plane being interposed between the longitudinal axis and said longitudinal zone.

[0016] The angle may be less than 40°, preferably between 20° and 30°, preferably between 25° and 30°, preferably between 26° and 28°, preferably equal to 27°.

[0017] In a particular embodiment, the scraper comprises a substantially rectangular plate carried by the frame.

[0018] Wastewater disposal means may be arranged fluidically downstream of the bowl and may comprise a conduit, a distal end of which is connected to a low point of the bowl.

[0019] The device may comprise cover means housing the cleaning liquid supply means and delimiting an enclosure for projecting cleaning liquid onto the longitudinal zone.

[0020] The hooding means may comprise a longitudinal wall for blocking direct projection of cleaning liquid arranged circumferentially around the longitudinal axis of the roller so that the supply means are arranged between said longitudinal wall and the wringing means. A longitudinal edge of the wall The longitudinal locking strip can be arranged opposite the roller, especially the roller fabric. Ideally, the distance should be as small as possible and such that the longitudinal edge does not exert pressure on the fabric.

[0021] The hooding means may also comprise a concave curved longitudinal wall having a concavity oriented towards the roller. This wall may be longitudinal and oriented along the longitudinal axis of the roller. A first end around the longitudinal axis may be connected to a longitudinal end or edge of the longitudinal blocking wall which is opposite the longitudinal end or edge arranged opposite the roller. A second end around the longitudinal axis may form a part of the bowl.

[0022] The wringing means can be arranged in the enclosure.

[0023] The longitudinal ends of the blocking wall can be connected to flanges.

[0024] The longitudinal ends of the fabric can be clamped between a longitudinal end of a roll mandrel and a flange.

[0025] The means for supplying the cleaning liquid may comprise means for projecting the cleaning liquid.

[0026] The projection means may comprise at least one projection nozzle, preferably at least three nozzles, preferably aligned longitudinally. The axes of the nozzles may be coplanar. At least one axis of a nozzle may intercept the longitudinal axis of the roller.

[0027] Said at least one nozzle can be positioned and have a projection cone comprising the entire roller.

[0028] The projection means may comprise a projection ramp comprising a plurality of outlet orifices for a cleaning liquid, the ramp being substantially parallel to the axis of the roller.

[0029] In a particular embodiment, the frame comprises a swivel connector for connecting a gripping rod.

[0030] This document relates to a cleaning system comprising a device as described above and a mobile cleaning unit comprising: A cleaning fluid supply connection of the device connected to a cleaning fluid tank, A wastewater discharge connection connected to a wastewater storage tank, means for supplying power to a cleaning liquid supply pump and a wastewater discharge pump. Brief description of the drawings

[0031] The invention will be better understood and other details, characteristics and advantages of the invention will appear on reading the following description given by way of non-limiting example with reference to the appended drawings: [Fig. 1] Figure 1 and [Fig. 2] Figure 2 are perspective views of the device according to the invention; [Fig. 3] Figure 3 and [Fig. 4] Figure 4 are schematic views illustrating two possible angles for the projection of the cleaning liquid by nozzles of the device according to the invention; [Fig. 5] Figure 5, [Fig. 6] Figure 6 and [Fig. 7] Figure 7 are views illustrating the device according to the invention, certain parts omitted from each in order to facilitate understanding of the constituent parts of the device; [Fig. 8] Figure 8 includes a part A named Figure 8A and a part B named Figure 8B, these two figures illustrate two different orientations of the wastewater collection means comprising a collection bowl, [Fig. 9] Figure 9 is a sectional view along section plane AA of Figure 5, [Fig. 10] Figure 10 is a view of a mobile cleaning unit for use with a device according to the invention, [Fig. 11] Figure 11 is an alternative embodiment of a device according to the invention, [Fig. 12] Figure 12 is a variant of a collection wall, [Fig. 13] Figure 13 illustrates a device according to another variant and comprising two parts named Figure 13A and Figure 13B, Figure 13A being a section along the section line AA illustrated in Figure 13B, [Fig. 14] Figure 14 is a side view of the device of Figure 13 and along the longitudinal axis of the roller, a side flange being omitted, [Fig. 15] Figure 15 is a perspective view of the device of Figure 13, [Fig. 16] Figure 16 is a side view of the device of Figure 13, [Fig. 17] Figure 17 is a view of a portion of the chassis of the device according to Figure 13 [Fig. 18] Figure 18 is a schematic sectional illustration of one longitudinal end of a cleaning roller. Description of the embodiments

[0032] We now refer to Figures 1 to 7 which illustrate a cleaning device 10 intended to be mounted at the distal end of a pole 12 by means of an orientable connection 13. The device comprises a frame 14 carrying a roller 15 for cleaning a glazed surface 18 (see Figure 3). This roller 15 is able to rotate around a longitudinal axis L in a direction of rotation R. The frame 14 comprises a central part 16 connected at its longitudinal ends to two lateral plates L1 and L2. Each plate L1, L2 carries a tubular portion (not visible) at its end opposite that connected to the central part 16, which tubular portion carries a rolling bearing (not visible). In this way, the roller 15 can rotate around the tubular portions fixed relative to the frame 14. A motor is arranged inside the roller 15 and to ensure the controlled rotation of the roller 15. The motor can be electric.It can also be hydraulic, the pressure of the cleaning liquid circuit providing the energy for the rotation of the roller. The energy supply can be provided by a mobile unit described later.

[0033] The roller 15 comprises an outer layer formed by a cleaning fabric 20, this fabric 20 being ideally made of a microfiber material having a high absorbency. The microfiber may be polyester. The microfiber may have bristles with a diameter of between 0.6 and 0.9 μm.

[0034] In a particular embodiment, the outer layer formed by a fabric can be produced using a strip of fabric which is wound helically around the longitudinal axis L. Thus, the outer layer can comprise several turns of fabric strip, the junction between each turn following a helical shape around the longitudinal axis which avoids forming a fabric junction along the longitudinal axis and thus limits possible tearing of the fabric.

[0035] The chassis 14 carries means for supplying a cleaning liquid. Said supply means are supported by a support 22 fixed to the central part 16 of the chassis 14. The support 22 comprises two arms 22a, 22b substantially parallel to each other and connected at their opposite ends to the central part 16 of the chassis 14 by a plate 22c. itself supporting a plurality of nozzles 24 for projecting a cleaning liquid. Each nozzle 24 is capable of projecting cleaning liquid along a cone 26. It is understood that other means than nozzles 24 could be used and for example means for projecting cleaning liquid along a line. It would also be possible to supply liquid to the fabric via its radially internal face by means of flexible conduits which could be carried by the side plates L1, L2. The nozzles 26 are supplied with cleaning liquid by a common connector 28 connected to a cleaning liquid supply conduit coming from a mobile unit 30 which will be described later with reference to FIG. 10.

[0036] The nozzles 26 for spraying cleaning liquid make it possible to bring liquid onto a longitudinal zone 32 of the fabric 20, which zone 32, once impregnated with cleaning liquid, will come into contact with a glass surface 18 (see figures 3 and 4).

[0037] It is observed that the nozzles 26 are substantially aligned longitudinally. As shown in FIG. 3, the nozzles 26 may have a central axis 24a for projecting cleaning liquid which intercepts the longitudinal axis L of the roller 15. The axes 24a of the nozzles 24 are then coplanar. It is observed that the nozzles 24 project cleaning liquid upstream and downstream and over the entire portion of the roller 15 arranged opposite the nozzle 24. This configuration is not optimal since it leads to projecting liquid below the roller 15 and may induce overconsumption of cleaning liquid. FIG. 4 illustrates a variant in which the projection nozzles 24 are shaped so that the axis 24b of each nozzle 24 has a central axis which does not intercept the longitudinal axis of the roller. It is observed that the central projection axis 24b has been offset so as to project more cleaning liquid in front of the roller 15.

[0038] The cleaning device 10 also comprises wringing means and wastewater collection means.

[0039] The wringing means make it possible to continuously wring the fabric 20 of the roller 15 so as to prevent it from becoming saturated with water and also so as to continuously recover the dirt. The wringing means comprise a scraper 34 which is here a substantially rectangular plate and which is carried by the frame 14. This scraper 34 comprises a longitudinal edge 34a for scraping the fabric 20 of the roller 15. This longitudinal edge 34a is arranged in contact with the fabric 20 of the roller 15 and more specifically so as to penetrate into the fabric 20 in order to compress it and therefore extract the waste water therefrom.

[0040] The used liquid is recovered by the collection means and more particularly by a bowl. These collection means comprise a concave curved wall 36 arranged in the immediate vicinity of the fabric 20 and which is connected to a collection wall 38 so as to form a leading edge 40, that is to say a projecting edge opposite the wringing means 34 so as to promote the orientation of the wastewater towards the collection wall 38. The concave curved wall 36 here has a profile with a constant radius of curvature centered on the axis of rotation. This profile could also not be constant. The leading edge 40 has a substantially rectilinear shape parallel to the longitudinal axis L.

[0041] The collection wall 38 has at least one trailing edge 42 comprising at least one portion 42a extending from a longitudinal end of the collection wall 38 to a wastewater discharge orifice 44 of the bowl. It is observed that the trailing edge 42 comprises two portions 42a converging towards each other from opposite longitudinal ends, and up to a plane perpendicular to the longitudinal axis L passing through the wastewater discharge orifice 44 (figure 9). The trailing edge 42 of the collection wall is connected to a blocking wall 45 which thus forms with the collection wall 38 the wastewater recovery bowl. The discharge orifice 44 is formed at the end of a connector 46 connected to the distal end of a discharge conduit itself connected to the mobile unit 30. It is observed that the collection wall is also curved.

[0042] As illustrated in Figures 8A and 8B, it is noted that the collection means are symmetrical with respect to a plane perpendicular to the longitudinal axis.

[0043] Figure 10 illustrates a mobile unit intended to supply the cleaning device 10 with cleaning liquid and to recover the waste water. For this purpose, the mobile unit 30 comprises: - a connection 48 for supplying cleaning liquid to the device 10 connected to a tank 50 of cleaning liquid, this connection 48 is connected to the connection 28 of the nozzles 24 of the device 10 by a flexible conduit (not shown), - a waste water discharge connection 52 connected to a waste water storage tank 54, this connection 52 is connected to the discharge connection 46 of the device 10 by another flexible conduit (not shown).

[0044] The mobile unit 30 also comprises means 56 for supplying energy to a pump 58 for supplying the cleaning liquid and to a pump 60 for discharging the waste water.

[0045] In operation, at a time t, the cleaning liquid projection means project cleaning liquid onto a given or predetermined longitudinal area of ​​the fabric. Due to the rotation of the roller 15 in the direction R, this area comes into contact with the glass surface 18 at t+t1 and by rotation of the roller 15 makes it possible to clean the glass 18. At a later time t+t2, said area 32 then comes into contact with the scraper and the waste water. flows into the bowl of the collection means. The discharge orifice allows the water to be discharged through the discharge pipe to the waste water tank 54 of the mobile unit 30.

[0046] The invention thus makes it possible to clean a glass surface simply and quickly by limiting the quantity of water required and without the need for a physical connection to a water circuit. The specific arrangement of the collection means relative to the scraper and the water projection means makes it possible to carry out impregnation, scraping and water collection on each turn, which allows optimal cleaning of the glass surface.

[0047] Figure 11 illustrates another embodiment of a device 11 according to the invention in which the collection means 60 are dimensionally different but perform the same function as that described with reference to the preceding figures. The wringing means 62 are identical to those shown previously. It can be seen that the collection wall 64 has the shape of two inclined planes 64a converging towards each other so as to form a bowl at a wastewater recovery orifice (figure 12).

[0048] We now refer to Figures 13 to 17 which illustrate an alternative embodiment of the invention. Everything described above is applicable to this alternative. Figure 13 illustrates a cleaning device 11 comprising cover means housing the cleaning liquid supply means and delimiting an enclosure 67 for spraying cleaning liquid onto the longitudinal zone 32. As can be seen in Figure 13A, the cover means make it possible to contain the liquid at the longitudinal zone 32 and prevent liquid from being sprayed outside this zone and in particular prevent liquid from being sprayed directly onto a glazed surface to be cleaned. To this end, the cover means may comprise a longitudinal blocking wall 66 for direct spraying of cleaning liquid arranged circumferentially around the longitudinal axis L of the roller so that the supply means are arranged between said longitudinal wall and the wringing means.A longitudinal edge 66a of the longitudinal blocking wall 66 may be arranged opposite the roller 15, more particularly the fabric 20 of the roller 15. Ideally, the distance is as small as possible and such that the longitudinal edge 66a does not exert pressure on the fabric 20.

[0049] The hooding means may comprise a concave curved wall 68 with a concavity oriented towards the roller and one end of which is connected to the longitudinal blocking wall 66 and at a second end to the collection means, more precisely to the bowl. This concave curved wall may be longitudinal, i.e. extend along the longitudinal axis of the roller 15. A first end around the longitudinal axis may be connected to a longitudinal end or edge 66b of the longitudinal locking wall 66 which is opposite the longitudinal end or edge arranged opposite the roller 15. A second end around the longitudinal axis L may form a part of the bowl as can be seen in FIG. 13A. In this way, the projections of cleaning liquid are contained inside the cover means.

[0050] It is observed that the longitudinal zone 32 is housed inside the enclosure and formed between the end of the blocking wall opposite the fabric 20 and at a distance from it, and the wringing means 34.

[0051] The curved wall 68 carries on its concave curved face the wiping means, more particularly the scraper, which are therefore housed in the enclosure.

[0052] The scraper 34 extends substantially longitudinally and may be carried by a longitudinal wall 70 supported by the frame 14. This longitudinal wall 70 delimits a first upper space and a second lower space. This longitudinal wall 70 may comprise liquid passage orifices (not shown) allowing liquid to circulate from the upper space to the lower space which is delimited below by the bowl. In this way, the excess liquid circulates directly towards the bowl.

[0053] As shown schematically in Figure 14, the scraper penetrates the fabric to a depth of between 75 and 85% of the fabric thickness, preferably 80%.

[0054] The scraper 34 may comprise a substantially flat plate comprising a first face at 34a facing the bowl and a second face 34b facing the liquid supply means, the first face 34a extending along an extension plane PE forming an angle of at least 20° with a plane P containing the longitudinal axis L of the roller 25, the extension plane PE being interposed between the longitudinal axis L and said longitudinal zone 32.

[0055] The angle is less than 40°, preferably between 20° and 30°, preferably between 25° and 30°, preferably between 26° and 28°, preferably equal to 27°.

[0056] It has been observed that a penetration of the scraper 34 into the fabric 20 and an angulation of the scraper according to the aforementioned angle relative to the longitudinal axis L makes it possible to have a good compromise between wringing and braking of the roller 15.

[0057] As shown in Figure 15 and Figure 16, the curved wall 68 is connected at its longitudinal ends to two flanges 72.

[0058] In order to prevent the longitudinal ends of the fabric 20 from leading to the formation of lines of dirt, the longitudinal ends of the fabric may be clamped between a longitudinal end of a mandrel 74 of the roller 15 and a flange 72 (FIG. 18). It is also observed that one and / or the other of the longitudinal ends of the scraper 34 may be mounted in a slot of the flange 72.

Claims

Claims

1. Device (10) for cleaning a glazed surface, comprising: a frame (14), at least one cleaning roller (15) rotatably mounted about a longitudinal axis (L) on the frame (14) and externally comprising a cleaning fabric (20), means for supplying a cleaning liquid into contact with the cleaning fabric, these supply means being carried by the frame (14) and being configured to supply cleaning liquid to a longitudinal zone (32) of the fabric, means for wringing the roller (15), means for collecting waste water which comprise a longitudinal bowl, the wringing means of the roller are angularly interposed between said longitudinal zone (32) of the fabric and the bowl.

2. Device according to claim 1, in which the bowl has a longitudinal dimension (L) greater than or equal to the longitudinal dimension of the cleaning fabric (20).

3. Device according to one of the preceding claims, in which the bowl has a plane of symmetry substantially perpendicular to the longitudinal axis (L) of the roller (15).

4. Device according to claim 3, in which said plane of symmetry passes through a waste water discharge orifice of the bowl.

5. Device according to one of the preceding claims, in which the collection means comprise a concave curved wall (36) arranged in the immediate vicinity of the fabric connected to a collection wall (38) so as to form a leading edge (40) opposite the wringing means.

6. Device according to the preceding claim, in which the curved wall has a profile with a constant radius of curvature.

7. Device according to one of claims 5 or 6, in which the leading edge (40) is rectilinear and parallel to the longitudinal axis (L).

8. Device according to one of claims 5 to 7, in which the collection wall (38) has at least one trailing edge comprising at least one portion extending from a longitudinal end of the collection wall (38) to a waste water discharge orifice of the bowl.

9. Device according to one of the preceding claims, in which the wringing means comprise a scraper carried by the frame (14), the scraper (34) comprising a longitudinal scraping edge of the roller (15) which is arranged in contact with said roller (15).

10. Device according to the preceding claim, in which the scraper (34) comprises a substantially rectangular plate carried by the frame and preferably oriented parallel to the longitudinal axis of the roller.

11. Device according to claim 9 or 10, wherein the scraper (34) penetrates into the fabric (20) to a depth of between 75 and 85% of the thickness of the fabric, preferably 80%.

12. Device according to one of claims 9 to 11, in which the scraper (34) comprises a substantially flat plate comprising a first face (34a) facing the bowl and a second face (34b) facing the liquid supply means, the first face (34a) extending along an extension plane (PE) forming an angle of at least 20° with a plane containing the longitudinal axis (L) of the roller (15), the extension plane (PE) being interposed between the longitudinal axis (L) and said longitudinal zone (32).

13. Device according to the preceding claim, in which the angle is less than 40°, preferably between 20° and 30°, preferably between 25° and 30°, preferably between 26° and 28°, preferably equal to 27°.

14. Device according to one of the preceding claims, in which it comprises means for discharging waste water arranged fluidically downstream of the bowl and comprising a conduit, a distal end of which is connected to a low point of the bowl.

15. Device according to one of the preceding claims, in which it comprises cover means (66, 68) housing the cleaning liquid supply means and delimiting an enclosure (67) for projecting cleaning liquid onto the longitudinal zone (32).

16. Device according to claim 15, in which the hooding means (66, 68) comprise a longitudinal wall (66) for blocking direct projection of cleaning liquid arranged circumferentially around the longitudinal axis of the roller so that the supply means are arranged between said longitudinal wall and the wringing means.

17. Device according to one of claims 15 or 16, in which the wringing means are arranged in the enclosure.

18. Device according to claim 16 and claims 16 and 17, in which the longitudinal ends of the blocking wall are connected to flanges.

19. A device according to claim 18, wherein the longitudinal ends of the fabric (20) are clamped between a longitudinal end of a mandrel (74) of the roller (15) and a flange (72).

20. Device according to one of the preceding claims, in which the means for supplying the cleaning liquid comprise means for projecting the cleaning liquid.

21. Device according to the preceding claim, in which the projection means comprise at least one projection nozzle, preferably at least three nozzles, preferably aligned longitudinally.

22. Device according to the preceding claim, in which the axes of the nozzles are coplanar.

23. Device according to one of claims 13 or 14, in which at least one axis of a nozzle intercepts the longitudinal axis of the roller.

24. Device according to one of claims 13 to 15, wherein said at least one nozzle is positioned and has a projection cone comprising the entire roller (15).

25. Device according to one of claims 12 to 16, in which the projection means comprise a projection ramp comprising a plurality of outlet orifices for a cleaning liquid, the ramp being substantially parallel to the axis of the roller.

26. Device according to one of the preceding claims, in which the frame comprises a steerable connector for the connection of a gripping rod.

27. ​​Cleaning system comprising a device according to one of the preceding claims and a mobile cleaning unit comprising: A cleaning fluid supply connection of the device connected to a cleaning fluid tank, A wastewater discharge connection connected to a wastewater storage tank, means of supplying energy to a cleaning liquid supply pump and a wastewater discharge pump.

Images