Anti-leakage well lid device not exposed out of ground

Abstract

The utility model provides an anti-leakage well lid device not exposed out of the ground, which comprises an annular concrete wall built on the periphery of a manhole, a well lid is covered above the annular concrete wall, the top surface of the well lid is flush with the ground, an annular groove plate is arranged on the lower side wall of the well lid, the annular groove plate is embedded in the annular concrete wall, and the annular concrete wall is embedded in the annular groove plate. A distance of 5-15 mm is kept between the top of the annular groove plate and the bottom of the well lid, a distance of 50-100 mm is kept between the annular groove plate and the annular concrete wall, the bottom of the annular groove plate is arranged to be in a big-end-up cone shape, and a plurality of drainage square pipes which are distributed in a circumferential array mode with the center of the annular groove plate as the circle center are welded to the bottom of the annular groove plate. The drainage square pipe is arranged obliquely downwards, and the tail end of the drainage square pipe is wrapped with geotechnical cloth. The anti-leakage well lid device not exposed out of the ground is reasonable in design and simple in structure, water on the ground can be effectively and timely drained under the condition that it is guaranteed that the top of the well lid is flush with the ground, and water in a pool is not polluted.

Description

Technical Field

[0001] The utility model relates to a manhole cover device, in particular to an anti-leakage water manhole cover device which does not protrude from the ground. Background Art

[0002] The existing pool manhole covers (for operation management and maintenance), especially the clean water pool manhole covers, do not allow outside water to leak in and pollute the clean water, so the manhole covers are generally made 300mm higher than the ground. Figure 1 As shown, this structural design has the following problems. First, the partial exposure to the ground will cause an overall unsightly effect. Second, if the top of the clear water pool has special functional needs (such as being built into a sports and fitness venue or a leisure venue), it will affect the corresponding functional use. If the top of the manhole cover is directly made level with the ground, it is inevitable that rainwater mixed with groundwater will leak into the clear water pool when it rains, causing water pollution in the clear water pool, which is not allowed to happen. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model proposes a manhole cover device which is level with the outer ground and can ensure that the water outside is effectively and timely drained away without polluting the water in the pool.

[0004] To realize the above technical scheme, the utility model provides a leakage-proof manhole cover device that is not exposed to the ground, comprising: an annular concrete wall built around the manhole, a manhole cover is covered on the top of the annular concrete wall, the top surface of the manhole cover is flush with the ground, an annular groove plate is arranged on the lower side wall of the manhole cover, the annular groove plate is embedded in the annular concrete wall, a spacing of 5-15mm is maintained between the top of the annular groove plate and the bottom of the manhole cover, a spacing of 50-100mm is maintained between the annular groove plate and the annular concrete wall, the bottom of the annular groove plate is arranged to be a cone with a larger top and a smaller bottom, a plurality of drainage square pipes distributed in a circular array with the center of the annular groove plate as the center are welded to the bottom of the annular groove plate, the drainage square pipes are arranged to be inclined downward, and the ends of the drainage square pipes are wrapped with geotextile.

[0005] In the above technical scheme, during actual operation, an annular groove plate is set under the manhole cover to collect the leaking water. The ground water first enters the annular groove plate through the through holes located above the annular groove plate at the top of the manhole cover, and then is discharged to the underground through a plurality of drainage square pipes set at the bottom of the annular groove plate. This achieves the purpose of the manhole cover not being exposed to the ground, having a good waterproof effect, and being safe and reliable. The geotextile plays a role in preventing the drainage square pipes from being blocked.

[0006] Preferably, the end of the drainage square pipe is backfilled with medium-coarse sand, and the periphery of the medium-coarse sand is backfilled with crushed stone. By providing an outer layer of medium-coarse sand and crushed stone, it can be ensured that the water inside the drainage square pipe can be discharged quickly, while external water and soil are difficult to enter the interior of the drainage square pipe.

[0007] Preferably, a hinge is welded inside the drain outlet of the square drain pipe, and a movable baffle is installed on the hinge, which can ensure that the square drain pipe is unidirectionally drained, and water can flow out of the square drain pipe but is difficult to flow into.

[0008] Preferably, a water stop strip that swells when exposed to water is bonded to the top of the annular trough plate with strong glue. In order to avoid water overflow in extreme situations, the water stop strip that swells when exposed to water is bonded to the top of the stainless steel trough plate with strong glue to ensure that the water stop strip fits tightly to the bottom of the cover plate when the water is about to fill up, thereby avoiding water overflow.

[0009] Preferably, the manhole cover is sealed with the external ground using building sealant to reduce the amount of water seeping in.

[0010] The utility model provides a non-exposed ground anti-leakage manhole cover device with the beneficial effect that: the non-exposed ground anti-leakage manhole cover device has a reasonable design and a simple structure, and can ensure that the top of the manhole cover is flush with the ground, so that the ground water is effectively and timely drained away, and the manhole cover device does not pollute the water in the pool. In actual operation, the leakage water is collected by setting an annular groove plate under the manhole cover, and the ground water first enters the annular groove plate through the through holes on the top of the manhole cover above the annular groove plate, and then is discharged to the ground through a plurality of drainage square pipes set at the bottom of the annular groove plate, thereby achieving the purpose of the manhole cover not being exposed to the ground, having a good waterproof effect, and being safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The invention relates to an installation structure of a manhole cover in the prior art.

[0012] Figure 2 It is a side sectional view of the utility model.

[0013] Figure 3 It is a top view of the utility model.

[0014] Figure 4 It is a schematic diagram of the docking structure between the annular groove plate and the drainage square pipe in the utility model.

[0015] In the figure: 1. concrete wall; 2. manhole; 3. manhole cover; 4. water stop strip; 5. annular groove plate; 6. drainage square pipe; 7. geotextile; 8. medium-coarse sand; 9. gravel; 10. building sealant; 11. hinge; 12. movable baffle. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. All other embodiments obtained by ordinary personnel in this field without creative work are within the scope of protection of the utility model.

[0017] Embodiment: A leak-proof manhole cover device that does not protrude above the ground.

[0018] Reference Figures 1 to 4 As shown, a water well cover device that does not expose the ground includes: an annular concrete wall 1 built around the manhole 2, a well cover 3 is covered on the top of the annular concrete wall 1, the top surface of the well cover 3 is flush with the ground, and a 3mm thick stainless steel annular groove plate 5 is provided on the lower side wall of the well cover 3, and the annular groove plate 5 is embedded in the concrete wall 1. The annular groove plate 5 is 190mm high, and a distance of 10mm is maintained between the top of the annular groove plate 5 and the bottom of the well cover 3, and a distance of 80mm is maintained between the annular groove plate 5 and the concrete wall 1. The bottom of the annular groove plate 5 is set to a cone with a large top and a small bottom. The lower part of the annular groove plate 5 is 220mm wide. The annular groove plate 5 is welded by a vertical plate and an inclined plate, and the angle a between the two plates is 110 degrees. During construction, the steel bars are first tied, and then concrete is poured to the lower part of the annular groove plate 5 to form an oblique construction joint. Before the initial setting, the stainless steel annular groove plate 5 is placed at the construction joint and fixed, and then the remaining concrete of the concrete wall 1 is poured. This ensures the integrity between the stainless steel annular groove plate 5 and the concrete wall 1. In order to prevent the accumulated water in the annular groove plate 5 from overflowing under extreme circumstances, a 2 cm high water-swelling waterstop strip 4 is bonded to the top of the annular groove plate 5 with strong glue. When the water is almost full under extreme conditions, the waterstop strip 4 expands and fits tightly between the manhole cover 3, thereby avoiding the possibility of water overflow. Three 80*80*3 stainless steel drainage square pipes 6 are evenly arranged around the concrete wall 1 for drainage. The drainage square pipe 6 is 450mm long. The stainless steel drainage square pipe 6 is fixed to the stainless steel annular groove plate 5 by welding, and the overlap length is 130mm. The end of the drainage square pipe 6 is made of 300g / m 2 The geotextile 7 is wrapped. To facilitate drainage and reduce the external water entering the drainage square pipe 6, the outside of the drainage square pipe 6 is backfilled with 400mm thick medium coarse sand 8 and 500mm thick gravel 9 with a particle size not greater than 20mm. At the same time, a 72*72*1.2 one-way opening movable baffle 12 is set inside the drainage square pipe 6, and the movable baffle 12 and the drainage square pipe 6 are connected at the top with a stainless steel hinge 11. In this way, the water in the well can easily flow out through the movable baffle 12 under the action of gravity, while the small amount of water outside encounters the movable baffle 12 and the flow is blocked and cannot flow into the well. In order to ensure the effect of blocking the infiltration of external water, the two sides and the lower part of the movable baffle 12 in contact with the drainage square pipe 6 are bonded with water-expanding water stop strips with strong glue to truly prevent the infiltration of external water. At the same time, the manhole cover 3 and the outer ground are sealed with a building sealant 10 to reduce the amount of water seeping down.

[0019] The anti-leakage manhole cover device that does not expose the ground has a reasonable design and a simple structure. It can ensure that the top of the manhole cover is flush with the ground, so that the water on the ground can be effectively and timely drained away without polluting the water in the pool. The leaking water is collected by setting a stainless steel annular groove plate 5 under the manhole cover 3, and three drainage square pipes 6 are set at the bottom of the annular groove plate 5 for drainage. In order to facilitate the smooth discharge of water and prevent external soil from clogging the drainage square pipe 6, the end of the drainage square pipe 4 is provided with a geotextile wrap 7, a medium-coarse sand 8 and an outer layer of gravel 9 from the inside to the outside, so as to ensure that the internal water can be quickly discharged, and the external water and soil are difficult to enter the inside of the square pipe. In order to ensure that the drainage square pipe 6 is one-way drainage, a one-way opening movable baffle 12 is set inside the drainage square pipe 6 using a stainless steel hinge 11 to ensure that water can flow out but is difficult to flow in. At the same time, in order to avoid water overflow in extreme cases, the top of the stainless steel annular groove plate 5 is bonded with a water-swelling water stop strip 4 with strong glue to ensure that when the water is full, the water stop strip 4 is tightly attached to the bottom of the manhole cover 3 to avoid water overflow. The above measures truly achieve the purpose of the manhole cover not being exposed to the ground and the waterproof effect being safe and reliable. The above is only a preferred embodiment of the utility model, but the utility model should not be limited to the contents disclosed in the embodiment and the drawings, so any equivalent or modification completed without departing from the spirit disclosed by the utility model falls within the scope of protection of the utility model.

Claims

1. A leak-proof manhole cover device that does not protrude from the ground, comprising an annular concrete wall built around the manhole, characterized in that: A manhole cover is covered on the annular concrete wall, the top surface of the manhole cover is flush with the ground, an annular groove plate is arranged on the lower side wall of the manhole cover, the annular groove plate is embedded in the annular concrete wall, a spacing of 5-15 mm is maintained between the top of the annular groove plate and the bottom of the manhole cover, a spacing of 50-100 mm is maintained between the annular groove plate and the annular concrete wall, the bottom of the annular groove plate is arranged to be a cone with a larger top and a smaller bottom, a plurality of drainage square pipes distributed in a circular array with the center of the annular groove plate as the center are welded to the bottom of the annular groove plate, the drainage square pipes are arranged to be inclined downward, and the ends of the drainage square pipes are wrapped with geotextile.

2. The anti-leakage manhole cover device that does not protrude above the ground as claimed in claim 1, characterized in that: The end of the square drainage pipe is backfilled with medium-coarse sand, and the periphery of the medium-coarse sand is backfilled with crushed stones.

3. The anti-leakage manhole cover device that does not protrude above the ground as claimed in claim 1, characterized in that: A hinge is welded inside the drainage port of the drainage square pipe, and a movable baffle is installed on the hinge.

4. The anti-leakage manhole cover device that does not protrude above the ground as claimed in claim 1, characterized in that: The top of the annular groove plate is bonded with a water stop strip that expands when exposed to water by strong glue.

5. The anti-leakage manhole cover device that does not protrude above the ground as claimed in claim 1, characterized in that: The manhole cover and the external ground are sealed with building sealing paste.

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