FI88737B - Additional equipment for cover system, e.g. a well cover - Google Patents

Description

1 88737

Accessory for covers, such as manhole covers

The invention relates to an accessory for covers, such as manhole covers, according to the preamble of the appended claim. Such an accessory can be used, for example, in sewage inspection and connection wells, fire hydrant wells, district heating wells, various separator wells and, for example, in the covers of underground oil tanks.

In known decks, it is often a problem for surface water and the accompanying sand to enter the actual membrane space from the holes in the top cover lifting hooks or the like, or in the case of a tank, for example. Access to surface water and sand however, it has been possible to prevent the space in 15 decks in which an intermediate cover is placed below the top cover. Such a solution has been used in scattering wells and sewer networks to compact kan-Sisto to prevent odor nuisance, but this solution brought with it additional problems. In winter, the water leaking through the holes 20 in the top cover froze in the space between the top cover and the intermediate cover. Due to freezing, the intermediate cover was difficult to remove, and in the spring, as the ice melted, the water caused the cover to lift, allowing traffic passing over the cover to remove the cover 25 from its frame. Today, with sewage flowing fresh to treatment plants, intermediate deck installations are no longer done, but deck frames are for one deck only. Leakage control is therefore impossible with current installation supplies.

It is therefore an object of the present invention to provide an accessory which avoids leakage problems using existing installation accessories and which also does not have the above-described problems caused by winter weather, such as problems due to intermediate freezing and ice melting. These objects are achieved by the present invention, characterized in that the additional cover is formed hollow to allow thermal insulation, and its upper surface is at least partially shaped to conform to the inner surface of the top cover to reduce the space between the additional cover and the top cover.

The solution according to the invention thus firstly prevents the surface waters and the sand accompanying them from entering the well and other premises to which they are not intended to be led. As a result, the device 10 according to the invention reduces the flows of pumping stations and treatment plants and improves the cleaning result of the treatment plants. At the same time, the closed and hollow additional cover prevents the well from being ventilated, which eliminates odor nuisances and preserves the heat of the sewer network. At the same time, the intermediate space remains so low that the ice or water in the intermediate space cannot cause the additional problems described above. The benefit achieved by the invention is particularly significant in fire hydrant wells, where the freezing of surface water on the valve stem and nail connector has made it more difficult and slower to operate the fire brigade in an alarm situation. This problem is eliminated when using the accessory according to the invention.

The invention will now be described in more detail with reference to the examples according to the accompanying drawing, in which Fig. 1 shows a lateral cross-section of the top of a well equipped with an accessory according to the invention, Fig. 2a shows the accessory from above and Fig. 2b shows a further cross-section in Fig. II-II.

In Figure 1, the accessory according to the invention is placed in place at the top of the well 10. The well is described only at the top, as the other structure of the well is in no way related to the present invention. The well has, as usual, 35 walls 11 which form the actual well space 12 3 8 8 7 3 7 inside. A frame 13 is arranged in the upper part of the walls, on which a cover 10 is arranged so that it rests on its circumferential edge against the shoulder 15 in the frame 13. . The top cover is otherwise closed, 5 but has one lifting hole 16 for lifting the cover. The present invention is thus intended for decks in which surface water enters from a lifting and other hole in the cover, but which is not intended for collecting rainwater or surface water.

Immediately below the cover, an accessory 20 according to the invention is arranged, which covers the entire cross-section of the well from below the cover. As can also be seen in Figures 2a and 2b, the accessory consists of a closed (water-impermeable) additional cover 21 and a hanging ring 22 rotating the edges of its side circumference 15, the upper edge of which is bent into a laterally projecting flange part 22a. The accessory is suspended from the flange part 22a on the shoulder 15 provided on the cover 10 of the frame 13, thus the flange part 22a remains between the shoulder and the lower surface of the cover (Fig. 1). In this way, all existing frames can be provided with an additional cover acting as a leakage water barrier, and at the same time decisively reduce the space between the additional cover and the top cover, thus eliminating time. . problems that have plagued more intermediate deck solutions. In order to minimize the space, it is advantageous to shape the upper surface of the additional cover 21 at least partially in accordance with the inner surface of the cover 10. In the example according to the figures, the edge portions of the upper surface of the additional cover are shaped to be inclined downwards towards the central part of the cover according to the support beams 14a of the cover 10.

The hanger ring and the additional cover are fastened to each other in some suitable way, e.g. by gluing with a silicone. The preferred material of the additional cover 21 is polyethylene, while the hanger ring 22 is preferably made of steel. By forming the additional cover 4 '' 8 7 j / hollow according to Fig. 2b, it can furthermore be provided with thermal insulation if the application of the accessory requires such insulation. This extends the scope of the additional cover.

To ensure easy handling, it is advantageous to provide the accessory 5 with a lifting handle. This is indicated in the figures by reference numeral 30.

Although the invention has been described above with reference to the example according to the accompanying drawing, it is clear that the invention is not limited thereto, but can be modified in many ways within the scope of the inventive idea set forth in the appended claims. For example, a separate suspension ring is not necessarily required, but the suspension members can be integrated into the additional cover. Also, the application of the accessory is not necessarily limited to the well or tank structures described above.

Claims (1)

Claim 5: An accessory for covers, such as manhole covers, which cover comprises a frame (13) fitted to the upper part of the walls (11) forming the actual well or similar space (12), and at least one lifting hook etc. a closed top cover (14) with a hole (16) fitted to the shoulder (15) in the frame (13), the accessory consisting of a closed and waterproof additional cover (21) below the cover 10, provided with suspension members ( 22) by means of which it can be hung on a shoulder (15) provided on the cover (14) of the frame (13), characterized in that the additional cover (21) is formed hollow to allow thermal insulation and its upper surface is at least partially shaped on the inner surface of the cover (14). to reduce the space between the additional cover and the top cover. 6 * «737 Sillaggsanordning för locksystem, säsom brunns-lock, vilket locksystem omfattar en ram (13), som är in-5 passad i Övre delen av väggar (11), utgör det egent-Liga brunnsrummet e. Dyl. (12), and with mediators and lyftrox- e. häl (16) försett slutet täcklock (14), som är Inpassat med stöd av en anatsat (15) i ramen (13), och vilken tillaggsanordning bestär av ett nedanom täck-10 Locket beläget, slutet ocat vattenogenomsläppligt tilläggs-lock (21) , a light box with an upper arm (22), a single arm with an upper arm (15) for the armature (15) for the ram (13), a block (14), a rotating key, with a tongue (21) har utformats ihäligt för 15 att möjliggöra värmeis dess Övre yta är ätmin-stone delvis utformad enligt täcklockets (14) inneryta för att minska utrymmet mellan tilläggslocket och täcklocket.