CN203129109U - Retaining wall backflow-preventing water drain pipe - Google Patents

Abstract

The utility model provides a retaining wall backflow-preventing water drain pipe, which belongs to the technical field of the hydraulic engineering. The retaining wall backflow-preventing water drain pipe is characterized by comprising a water inlet pipe, a check valve and a water drain pipe, wherein the check valve is arranged between the water inlet pipe and the water drain pipe; and the check valve consists of an upper valve body, a lower valve body, a floating ball and grid bars, the upper valve body is in a flared shape being gradually enlarged from top to bottom, a water inlet on the upper end of the upper valve body is communicated with the water inlet pipe, the inner diameter of the water inlet is smaller than the diameter of the floating ball, a plurality of grid bars are arranged in the middle of an inner cavity of the lower valve body, the floating ball is arranged in the cavity between the lower valve body and the upper valve body above the grid bars, a water outlet on side wall of the lower part of the lower valve body is communicated with the water drain pipe, and the upper valve body and the lower valve body are connected with each other in a seam allowance sealing way. The retaining wall backflow-preventing water drain pipe is reasonable in design, simple in structure, low in cost, reliable to run, the single-directional water drain function is realized, the stability and the safety of a retaining wall can be guaranteed, and the retaining wall backflow-preventing water drain pipe can be widely popularized to use in the hydraulic engineering.

Description

A kind of retaining wall anti-inverting drainage pipe

technical field

The utility model belongs to the technical field of water conservancy engineering, in particular to an anti-backflow drain pipe for retaining walls.

Background technique

In water conservancy projects, in order to meet the purpose of stabilizing slopes such as anti-seepage and anti-scouring and preventing soil loss, retaining walls are often built to protect the slopes of rivers, spillways, and channels. For the safety and stability of the retaining walls, design, protection When building a retaining wall, a number of drain pipes are installed in the retaining wall to discharge the soil gravity water formed after the rainfall or the accumulated water caused by other reasons in time. Not only can the water not be discharged, but the river water will pour back into the soil behind the wall through the drain pipe, which will increase the water content of the soil and increase the bulk density of the soil. The wall collapsed.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an anti-backflow drainage pipe for retaining walls, which can not only effectively remove moisture from the soil behind the wall, but also prevent backflow of river water into the soil behind the wall.

The task of the utility model is realized through the following technical solutions, and its technical characteristics are to include a water inlet pipe 1, a check valve 2, and a drain pipe 9, and a check valve 2 is arranged between the water inlet pipe 1 and the drain pipe 9; the check valve 2 It consists of an upper valve body 3, a lower valve body 4, a floating ball 5, and a grid bar 6. The upper valve body 3 is in the shape of a trumpet with a small upper part and a larger lower part. The water inlet 7 at the upper end of the upper valve body 3 is connected to the water inlet pipe 1 and the water inlet 7 The inner diameter of the inner diameter of the lower valve body 4 is smaller than the diameter of the floating ball 5, and the middle part of the inner cavity of the lower valve body 4 is provided with a plurality of grid bars 6, and the floating ball 5 is placed in the cavity between the lower valve body 4 and the upper valve body 3 above the grid bars 6. The water outlet 8 on the side wall of the lower part of the valve body 4 is connected to the drain pipe 9, and the upper valve body 3 and the lower valve body 4 are connected by sealing.

The plurality of grid bars 6 arranged in the middle of the inner cavity of the lower valve body 4 are parallel to each other, and are arranged in a stepped manner with the center high and the two sides slightly lower.

The bottom of the lower valve body 4 is an arc surface, so that the water flow during drainage can bring the silt of the poured water into the lower valve body 4 more smoothly to wash away in the drainpipe 9 and prevent the silt from accumulating.

Drainage pipe 9 exits are provided with protective net 10, can prevent river water floating sundry from entering in the drainage pipe 9.

The positive effects of the utility model are: reasonable design, simple structure, low cost, reliable operation, not only can effectively remove the soil moisture behind the wall, but also prevent river water from pouring back into the soil behind the wall, realize the one-way drainage function, and ensure soil retaining The stability and safety of the wall can be widely applied in hydraulic engineering.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a sectional view along line A-A of Fig. 1 .

Fig. 3 is a structural schematic diagram of the utility model used for retaining walls.

In the figure 1-water inlet pipe, 2-one-way valve, 3-upper valve body, 4-lower valve body, 5-floating ball, 6-grid bar, 7-water inlet, 8-water outlet, 9-drainage pipe, 10-protective net, 11-retaining wall, 12-soil body behind the wall.

Detailed ways

The details of a retaining wall anti-backflow drain pipe proposed by the utility model will be described in detail in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, it includes a water inlet pipe 1, a check valve 2, and a drain pipe 9, and a check valve 2 is arranged between the water inlet pipe 1 and the drain pipe 9; the check valve 2 consists of an upper valve body 3, a lower The valve body 4, the floating ball 5, and the grid bar 6 are composed. The upper valve body 3 is in the shape of a trumpet with a small top and a large bottom. The water inlet 7 at the upper end of the upper valve body 3 is connected to the water inlet pipe 1. Diameter, the middle part of the inner cavity of the lower valve body 4 is provided with a plurality of grid bars 6, and the plurality of grid bars 6 are parallel to each other, and are arranged in a stepped manner with the center high and the sides slightly lower. The floating ball 5 is placed on the grid bars 6 In the cavity between the upper lower valve body 4 and the upper valve body 3, multiple grid bars 6 play the role of supporting the floating ball 6 to prevent the floating ball 5 from moving down due to its own weight to block the water outlet 8, but the water inlet pipe 1 is discharged from the wall. The water flow of the soil 12 moisture can be smoothly discharged from the water outlet 8 through the gap between the grid bars 6. The grid bars 6 are arranged in a stepped manner with the center high and the sides slightly lower, so that the floating ball 5 is in a normal drainage state. , because one side of the valve chamber of the check valve 2 deviates from the center of the valve chamber due to its own weight, it can reduce the washing of the floating ball 5 by the water flow discharged from the water inlet pipe 1, prolong the service life of the floating ball 5, and make the drainage more smooth, and It is also beneficial to wash away the mud and sand brought by the pouring water at the bottom of the lower valve body 4, and the mud and sand will be washed into the drain pipe 9 to discharge to prevent mud and sand from accumulating. 3. The lower valve body 4 is connected with a seam seal. The bottom of the lower valve body 4 is an arc surface, so that the water flow during drainage can bring the silt of the poured water into the lower valve body 4 more smoothly to wash away in the drainpipe 9 and prevent the silt from accumulating. Drainage pipe 9 exits are provided with protective net 10, can prevent river water floating sundry from entering in the drainage pipe 9. When the river water rises and floods the discharge pipe 9 outlet of the drain pipe, the river water enters the one-way valve 2, and the float 5 floats up to block the water inlet 7 of the upper valve body 3 due to buoyancy, so that the river water cannot be poured back into the water inlet pipe 1. To achieve the purpose of preventing backflow.

As shown in Figure 3, when building the retaining wall 11, the installation of the bottom discharge pipe should be higher than the normal water level of the river. Pipe 9 length intercepts according to reality, and when carrying out wall back soil body 12 fillings, according to retaining wall 11 design requirements, filter layer is set at water inlet pipe 1 water inlet place.

Claims (4)

1. A retaining wall anti-backflow discharge pipe is characterized in that it comprises a water inlet pipe (1), a one-way valve (2), a drainpipe (9), and a water inlet pipe (1) and a drainpipe (9) are provided with One-way valve (2); one-way valve (2) is made up of upper valve body (3), lower valve body (4), floating ball (5), grid bar (6), and upper valve body (3) is upper small The lower big trumpet shape, the water inlet (7) on the upper end of the upper valve body (3) is connected to the water inlet pipe (1), the inner diameter of the water inlet (7) is smaller than the diameter of the float (5), and the inner cavity of the lower valve body (4) The middle part is provided with a plurality of grid bars (6), and the floating ball (5) is placed in the cavity between the lower valve body (4) and the upper valve body (3) on the grid bar (6), and the lower valve body (4) The water outlet (8) on the side wall of the lower part is connected to the drain pipe (9), and the upper valve body (3) and the lower valve body (4) are connected by sealing. 2. A retaining wall anti-backflow drainage pipe according to claim 1, characterized in that the plurality of grid bars (6) arranged in the middle of the inner cavity of the lower valve body (4) are parallel to each other and have a center height Ladder-like arrangement with slightly lower sides. 3. A retaining wall anti-backflow drainage pipe according to claim 1, characterized in that the bottom of the lower valve body (4) is an arc-shaped surface. 4. A retaining wall anti-backflow drainage pipe according to claim 1, characterized in that a protective net (10) is provided at the outlet of the drainage pipe (9).

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