Water drain pipe device

Abstract

The utility model relates to the technical field of constructional engineering, in particular to a water drain pipe device which comprises a pipe body and a filter screen wrapping one end of the pipe body. The pipe cover is detachably connected to the other end of the pipe body, the side face, facing the pipe body, of the pipe cover is provided with an inverted filter layer capable of filtering small gravel, and the pipe cover is provided with a drainage hole communicated with the inverted filter layer; and when the pipe cover is connected with the pipe body, the inverted filter layer is arranged in the pipe body in a penetrating manner. According to the requirement of foundation pit geology, the drainage efficiency can be improved by disassembling the inverted filter layer, or fine gravel is filtered by installing the inverted filter layer, and gravel loss is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, and in particular to a drainage pipe device. Background Art

[0002] Drain pipes are widely used in construction facilities such as roads, railway roadbeds, subway projects, tunnels, and deep foundation pit slopes. They are mainly used to drain moisture from the soil. Drain pipes commonly used on slopes are made of PVC materials or steel pipes formed by adding other additives to high-density steel. Drain pipes are arranged in rows according to design requirements, and can be denser in places with more water seepage. The pipe body is equipped with water-permeable holes and is wrapped with filter cloth or filter mesh. During construction, the closed end of the drain pipe is inserted into the pre-drilled hole in the slope. The moisture in the aquifer will penetrate into the pipe body through the filter cloth or filter mesh, and finally flow into the drainage ditch from the end of the pipe exposed outside the soil.

[0003] At present, in order to pursue the filtration rate during the construction of drainage pipes, large-aperture filter cloths or filter screens are usually selected. This may not have adverse effects on geological conditions with larger gravel particles, but for geological conditions with smaller gravel particles, such as the red sandstone strata in the northwest region, the rock particles are finer. If large-aperture filter cloths or filter screens are used, it is easy to cause excessive loss of sand and gravel, forming cavities around the drainage pipes and causing the risk of local collapse of the slope. If small-aperture filter cloths or filter screens are used blindly, the filtration rate will be affected. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a drainage pipe device, which can improve the drainage efficiency by removing the filter layer according to the needs of the foundation pit geology, or filter fine gravel by installing the filter layer to prevent sand and gravel loss.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A drainage pipe device comprises a pipe body and a filter screen wrapped around one end of the pipe body; further comprising a pipe cover detachably connected to the other end of the pipe body, wherein a filter layer capable of filtering small gravel is provided on a side of the pipe cover facing the pipe body, and a drainage hole connected to the filter layer is provided on the pipe cover; when the pipe cover is connected to the pipe body, the filter layer is inserted into the pipe body.

[0007] As an optional solution, the filter layer includes an outer layer and an inner core, the outer layer and the inner core are both connected to the pipe cover, the inner core is arranged in the outer layer, and the position of the inner core corresponds to the drainage hole; fine gravel is filled between the outer layer and the inner core.

[0008] As an optional solution, the outer layer and the inner core are both made of permeable geotextiles.

[0009] As an optional solution, the tube body is provided with a plurality of flower holes staggered around the circumference of the tube.

[0010] As an optional solution, the tube cover is threadably sleeved on the tube body.

[0011] As an optional solution, a sealing ring located at the outer periphery of the filter layer is provided on a side of the tube cover facing the tube body, and the sealing ring can abut against the tube cover and the tube body when the tube cover is tightened.

[0012] As an optional solution, a flow guide tube is provided on a side of the tube cover facing away from the tube body.

[0013] Due to the adoption of the above technical solution, the utility model will have the following beneficial effects:

[0014] The utility model provides a drainage pipe device, which is provided with a pipe cover detachably connected to the pipe body and an anti-filter layer on the pipe cover that can filter small gravel. In this way, when the foundation pit is a geological state with a large gravel particle size, the pipe cover can be removed so that the water in the pipe body can directly flow into the drainage ditch; when the foundation pit is a geological state with a small gravel particle size, the pipe cover can be installed so that the anti-filter layer can filter out the small gravel in the water, so that only the water can be discharged through the anti-filter layer and the drainage hole. Compared with the prior art, the utility model can improve the drainage efficiency by removing the anti-filter layer according to the needs of the foundation pit geology, or filter the fine gravel by installing the anti-filter layer to prevent the loss of sand and gravel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a structural diagram of the drain pipe device according to an embodiment of the utility model in use;

[0017] Figure 2 for Figure 1 A three-dimensional diagram of the drain pipe device according to the embodiment with the filter screen hidden;

[0018] Figure 3 for Figure 2 sectional view of

[0019] Figure 4 for Figure 2 Exploded diagram.

[0020] Figure numerals: 1. pipe body; 11. flower hole; 2. filter screen; 3. pipe cover; 31. drainage hole; 4. filter layer; 41. outer layer; 42. inner core; 43. fine gravel; 5. sealing ring; 6. guide pipe; 7. slope. DETAILED DESCRIPTION

[0021] 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. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical" and "

[0023] The directions or positional relationships indicated by ", "horizontal", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Please refer to Figure 1-4 In one embodiment of a drain pipe device provided by the utility model, the drain pipe device includes a pipe body 1 and a filter screen 2; the pipe body 1 adopts The pipe body 1 is provided with a plurality of flower holes 1 1 staggered around the pipe body. The pipe body 1 needs to be arranged in rows at intervals according to the design requirements, and the density can be increased in places where there is more water seepage; the filter screen 2 is wrapped around the closed end of the pipe body 1. During construction, it is best to insert the closed end of the pipe body 1 into the pre-drilled hole 7 on the slope at an angle of ≥5° to the horizontal plane.

[0026] On this basis, the drainage pipe device of this embodiment also includes a pipe cover 3 detachably connected to the other end of the pipe body 1, and a filter layer 4 for filtering small gravel is provided on the side of the pipe cover 3 facing the pipe body 1, and a drainage hole 31 connected to the filter layer 4 is opened at the axial center of the pipe cover 3. When the foundation pit is a geological area with a large gravel particle size, the pipe cover 3 can be removed from the pipe body 1. Since the large gravel will be directly filtered out by the filter screen 2, and the remaining water will penetrate into the pipe body 1 through the filter screen 2 and the flower hole 11, without the restriction of the filter layer 4, the water in the pipe body 1 will directly flow into the drainage ditch from the pipe opening at one end of the pipe body 1 exposed to the outside of the soil, thereby improving the drainage efficiency. When the foundation pit is a geological area with a small gravel particle size, the pipe cover 3 can be connected to the pipe body 1. Even if the small gravel will penetrate into the pipe body 1 with the water through the filter screen 2 and the flower hole 11, the filter layer 4 will filter out the small gravel in the water, so that only the water is discharged through the filter layer 4 and the drainage hole 31.

[0027] That is to say, according to the needs of the foundation pit geology, the drainage efficiency can be improved by removing the filter layer 4, or the small gravel can be filtered by installing the filter layer 4 to prevent the loss of sand and gravel.

[0028] Specifically, the filter layer 4 includes an outer layer 41 and an inner core 42. The outer layer 41 and the inner core 42 are coaxially fixedly connected to the pipe cover 3. The inner core 42 is arranged in the outer layer 41. The position of the inner core 42 corresponds to the drainage hole 31 and the diameter is larger than the drainage hole 31. Fine gravel 43 is filled between the outer layer 41 and the inner core 42. The particle size of the fine gravel 43 is similar to that of the small gravel in the foundation pit geology, which can ensure the filtering effect without affecting the filtering rate. In practical applications, different filter layers 4 are equipped, and the particle size of the fine gravel 43 of each filter layer 4 is different. When in use, the filter layer 4 corresponding to the fine gravel 43 is selected according to the particle size of the small gravel in the foundation pit geology, and the pipe cover 3 with the filter layer 4 is installed on the pipe body 1.

[0029] More specifically, the outer layer 41 and the inner core 42 are both made of permeable geotextile, which is a special textile material used in geotechnical engineering. It is usually made of synthetic fibers (such as polyester fibers or polypropylene fibers) and processed by needle punching, melting or weaving. Permeable geotextile has the following main characteristics and uses: Permeability, an important feature of permeable geotextile is that it has good permeability, allowing groundwater to flow freely through it. This feature allows permeable geotextile to be used to control water flow in soil and foundations, prevent soil erosion and water source pollution. Isolation, permeable geotextile can play a role in isolation and separation, effectively isolating soil or other materials of different particle sizes. This helps prevent the mixing and sedimentation of soil particles and maintain the stability and drainage performance of the soil. Strength and durability, permeable geotextile usually has high tensile strength and durability, and can withstand the pressure of soil and water. This makes it effective in enhancing the stability and bearing capacity of the soil in roads, railways and civil engineering. Filtration performance, permeable geotextile can filter out particulate impurities in the soil and keep the water flow clean and unobstructed. This makes it widely used in the protection and water quality treatment projects of reservoirs, rivers and coastlines. Engineering application: Permeable geotextile is widely used in civil engineering, including highways, railways, water conservancy projects, land filling, environmental protection and other fields. It can be used in foundation reinforcement, soil stabilization, drainage systems, river repair, protective structures and other projects. In short, permeable geotextile is an important geotechnical material. Through its special properties, it can improve the stability of soil and foundation, prevent soil erosion and water pollution, and is used in various civil engineering projects.

[0030] Specifically, the pipe cover 3 can be arranged to be threadedly sleeved on the pipe body 1, and the filter layer 4 can be disassembled and assembled by tightening and loosening the pipe cover 3, which is simpler and more convenient to use.

[0031] Furthermore, an O-ring 5 located on the outer periphery of the filter layer 4 is coaxially fixedly connected to the side of the pipe cover 3 facing the pipe body 1. When the pipe cover 3 is tightened, the sealing ring 5 can abut against the pipe cover 3 and the pipe body 1, thereby improving the sealing performance when the pipe cover 3 is installed on the pipe body 1 and preventing sand and gravel from leaking from the gap between the pipe cover 3 and the pipe body 1 under formation pressure.

[0032] In addition, since the present embodiment inserts the pipe body 1 into the side wall of the foundation pit, and the water is discharged through the pipe body 1, the discharged groundwater is likely to fall on the side wall of the foundation pit again under the influence of external factors such as wind during the falling process, and re-seep into the side wall of the foundation pit, thereby affecting the drainage effect. Therefore, a guide pipe 6 connected to the drainage hole 31 can be fixedly connected to the side of the pipe cover 3 facing away from the pipe body 1, so that the water discharged from the drainage hole 31 will flow into the drainage ditch along the guide pipe 6, and will not fall on the side wall of the foundation pit, thereby improving the drainage effect.

[0033] The usage method or working principle of the utility model is as follows:

[0034] The pipe body 1 wrapped with the filter screen 2 is inserted into the pre-drilled holes in the slope 7. The pipe bodies 1 are arranged in rows at intervals according to the design requirements, and the pipes can be denser in places with more water seepage.

[0035] After the pipe body 1 is installed, the pipe cover 3 is not installed first, and it is observed whether the water discharged from the pipe body 1 contains sand and gravel. If it does not contain sand and gravel, the foundation pit is a geological state with a large gravel particle size. At this time, the pipe cover 3 can be kept removed, so that the large gravel will be directly filtered out by the filter screen 2 during drainage, and the remaining water will penetrate into the pipe body 1 through the filter screen 2 and the flower hole 11. Due to the lack of the restriction of the anti-filter layer 4, the water in the pipe body 1 will directly flow into the drainage ditch from the pipe opening at one end of the pipe body 1 exposed to the outside of the soil, thereby improving the drainage efficiency. If the water discharged from the pipe body 1 contains sand and gravel, the foundation pit is a geological state with a small gravel particle size. At this time, the pipe cover 3 can be installed on the pipe body 1. Even if the small gravel will penetrate into the pipe body 1 with the water through the filter screen 2 and the flower hole 11, the anti-filter layer 4 will filter out the small gravel in the water, so that only the water is discharged through the anti-filter layer 4 and the drainage hole 31, thereby preventing the loss of sand and gravel.

[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A drainage pipe device, comprising a pipe body (1) and a filter screen (2) wrapped around one end of the pipe body (1); characterized in that: The invention also comprises a pipe cover (3) detachably connected to the other end of the pipe body (1); a filter layer (4) capable of filtering small gravel is provided on a side of the pipe cover (3) facing the pipe body (1); a drainage hole (31) communicating with the filter layer (4) is provided on the pipe cover (3); when the pipe cover (3) is connected to the pipe body (1), the filter layer (4) is inserted into the pipe body (1).

2. A drain pipe device according to claim 1, characterized in that: The filter layer (4) comprises an outer layer (41) and an inner core (42); the outer layer (41) and the inner core (42) are both connected to the pipe cover (3); the inner core (42) is arranged in the outer layer (41), and the position of the inner core (42) corresponds to the drainage hole (31); fine gravel (43) is filled between the outer layer (41) and the inner core (42).

3. A drain pipe device according to claim 2, characterized in that: The outer layer (41) and the inner core (42) are both made of permeable geotextile.

4. A drain pipe device according to claim 1, characterized in that: The tube body (1) is provided with a plurality of flower holes (11) staggered around the circumference of the tube.

5. A drain pipe device according to claim 1, characterized in that: The tube cover (3) is threadably sleeved on the tube body (1).

6. A drain pipe device according to claim 5, characterized in that: A sealing ring (5) is provided on the side of the tube cover (3) facing the tube body (1) and is located on the outer periphery of the filter layer (4). When the tube cover (3) is tightened, the sealing ring (5) can abut against the tube cover (3) and the tube body (1).

7. A drain pipe device according to claim 1, characterized in that: A flow guide tube (6) is provided on a side of the tube cover (3) facing away from the tube body (1).

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