Novel retaining wall drain pipe inverted filter device

Abstract

The utility model discloses a novel retaining wall drain pipe inverted filter device which comprises a drain pipe and an inverted filter assembly, the drain pipe is provided with holes, the inverted filter assembly is arranged in the drain pipe and fills the inside of the drain pipe, the inverted filter assembly comprises a plurality of inverted filter parts, and the inverted filter parts are arranged in the drain pipe. The filter can pass through the inverted filter assembly; the inverted filter part comprises an inverted filter ball and an inverted filter shell which are detachably connected, and the inverted filter ball and the inverted filter shell are both made of hard materials and are filled with inverted filter materials; compared with the prior art, the utility model has the beneficial effects that the inverted filter components can be stuffed into the drainage pipe in batches, the operation convenience is increased, the stability of the filter material can be maintained, and after the inverted filter components are stuffed into the drainage pipe, the inverted filter components can form internal support for the drainage pipe, the overall stress strength is increased, and the service life of the drainage pipe is prolonged. And the problem of deformation of the drain pipe during pressing is avoided.

Description

Technical Field

[0001] This utility model relates to the field of building technology, and in particular to a novel retaining wall drainage pipe reverse filter device. Background Technology

[0002] Retaining wall drainage facilities refer to drainage measures designed to drain moisture from the soil behind the wall, prevent surface water infiltration, prevent water accumulation behind the wall from creating hydrostatic pressure, reduce frost heave pressure on backfill soil in cold regions, and eliminate expansion pressure on cohesive soil fill after immersion in water.

[0003] A reverse filter drainage pipe device is disclosed in the prior art, with authorization announcement number CN114197610B. It includes a drainage pipe, bagged gravel, reverse filter sand and gravel, and outlet baffle. The drainage pipe is installed in the drainage hole of the bank wall. The bagged gravel is installed on one side of the drainage pipe. 200g / m2 geotextile is processed into a cylindrical bag with an outer diameter of about 70mm and a length of 1200mm. Small stones are filled into the bag, and it is sealed to form a bagged gravel. The bag is inserted into the open section of a stainless steel pipe (drainage pipe). The reverse filter sand and gravel is installed on the other side of the drainage pipe and adjacent to the bagged gravel. The outlet baffle is installed at the outlet end of the drainage pipe and presses down on the reverse filter sand and gravel. The drainage pipe consists of a hollow pipe and a cone. The cone is installed at the inlet end of the hollow pipe. It can be used for the replacement and maintenance of the reverse filter drainage. When the reverse filter drainage fails, it is only necessary to re-drill a hole in the original position or nearby and press the entire device into the hole to complete the maintenance.

[0004] However, in the above technical solution, since the bagged gravel bag is set inside the drain pipe and is affected by the length of the drain pipe and the bagged gravel bag, the longer the drain pipe and the bagged gravel bag are, the more difficult it is to insert the bagged gravel bag into the drain pipe. If the gap between the bagged gravel bag and the drain pipe is increased, the reverse filtration effect will be reduced. Utility Model Content

[0005] The purpose of this utility model is to provide a new type of retaining wall drainage pipe reverse filter device that can easily install filter material into the drainage pipe and can form internal support for the drainage pipe.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is a novel retaining wall drainage pipe reverse filtration device, comprising a drainage pipe and a reverse filtration assembly. The drainage pipe is provided with holes, and the reverse filtration assembly is disposed inside the drainage pipe and fills the interior of the drainage pipe. The reverse filtration assembly includes several reverse filtration sections, which are arranged inside the drainage pipe. When water flows in the drainage pipe, it can pass through the reverse filtration assembly. The reverse filtration section includes a reverse filtration ball and a reverse filtration shell, which are detachably connected. Both the reverse filtration ball and the reverse filtration shell are made of rigid materials and are filled with reverse filtration material.

[0007] Furthermore, the filter ball is provided with a drain hole and a threaded hole, and a guide cylinder is connected through the threaded hole. The guide cylinder is fixed on the filter shell.

[0008] Furthermore, the filter housing includes a filter cylinder, a front cover, and a rear cover. The feed guide cylinder passes through the front cover and is fixedly connected to the front cover. The rear cover has a central hole. When the rear cover is connected to the filter cylinder, the feed guide cylinder passes through the central hole of the rear cover.

[0009] Furthermore, the filter housing is equipped with several partition frames, which divide the internal space of the filter housing into several filter layers. Each filter layer is annular and filled with filter material.

[0010] Furthermore, the end of the drain pipe is connected to a tapered head, which is connected to the drain pipe via an inner support frame, which is fixed to the front end of the drain pipe.

[0011] Furthermore, the inner support frame is provided with perforations, and a push rod is fixed to the conical head. The push rod passes through the perforations on the inner support frame, and when the push rod is subjected to force, it can cause the conical head to move along the axial direction of the drain pipe.

[0012] Furthermore, the drain pipe has a cap at the end, which limits the movement of the filter assembly inside the drain pipe.

[0013] Furthermore, a screw is screwed onto the cap, and a pressure plate is fixed to one end of the screw inside the drain pipe. When the screw rotates, it applies a thrust to the filter assembly through the pressure plate.

[0014] Compared with the prior art, the advantages of this utility model are: the reverse filter components can be inserted into the drain pipe in batches, which increases the convenience of operation and can maintain the stability of the filter material;

[0015] After the filter assembly is inserted into the drain pipe, it provides internal support to the drain pipe, increasing its overall strength and preventing deformation during insertion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall front view sectional structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the reverse filter section of this utility model;

[0019] Figure 4 This is a schematic diagram of the reverse filter ball structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the reverse filter housing structure of this utility model;

[0021] Figure 6 This is a schematic diagram showing the connection between the front cover and the guide cylinder of this utility model;

[0022] Figure 7 This is a schematic diagram of the filter layer distribution inside the filter housing of this utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the second embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the conical head structure of the second embodiment of the present invention;

[0025] Among them, 1-drainage pipe, 2-reverse filter assembly, 201-reverse filter ball, 2011-upper reverse filter hemisphere, 2012-lower reverse filter hemisphere, 2013-threaded hole, 202-reverse filter shell, 2021-reverse filter cylinder, 2022-front end cover, 2023-rear end cover, 2024-separating mesh frame, 2025-guide cylinder, 2026-center hole, 2027-filter layer, 3-hole, 4-conical head, 5-sealing cap, 6-screw rod, 7-top pressure plate, 8-inner support frame, 9-push rod, 10-anti-detachment disc. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Please see Figures 1 to 7As shown, a novel retaining wall drainage pipe 1 reverse filtration device includes a drainage pipe 1 and a reverse filtration component 2 installed inside the drainage pipe 1. The reverse filtration component 2 fills the internal space of the drainage pipe 1. Several holes 3 are provided on the drainage pipe 1. A conical head 4 and a cap 5 are respectively connected to the front and rear ends of the drainage pipe 1. The cap 5 is used to limit the reverse filtration component 2 inside the drainage pipe 1 to prevent the reverse filtration component 2 from sliding out of the drainage pipe 1. The design of the conical head 4 can reduce the resistance encountered by the drainage pipe 1 during the pressing process. When the drainage pipe 1 with the reverse filtration component 2 is pressed into the drainage hole, the water behind the retaining wall can enter the drainage pipe 1 through the holes 3 on the drainage pipe 1, and then the water flows out from the rear end of the drainage pipe 1. During this process, the reverse filtration component 2 filters the water.

[0029] The aforementioned filter assembly 2 includes several filter balls 201, each made of hard alloy, ceramic, or carbon fiber reinforced composite material. Each filter ball 201 has a cavity and several drainage holes connected to the cavity. The cavity can be filled with filter aggregate. After the filter aggregate fills the cavity of the filter ball 201, the filter balls 201 are inserted into the drain pipe 1. However, the filter balls 201 cannot completely fill the drain pipe 1, meaning there is a gap between adjacent filter balls 201. Therefore, a filter shell 202 is provided between adjacent filter balls 201. The filter shell 202 also has high hardness and good wear resistance, and is made of the same material as the filter balls 201. The filter shell 202 consists of a filter cylinder 2021, a front cover 2022, and a rear cover 2023. Both the rear cover 2023 and the rear cover 2023 are hemispherical shells, and both are connected to the filter cylinder 2021 by stainless steel bolts. The filter shell 202 is filled with filter material of different particle sizes. The front cover 2022 and the rear cover 2023 of the filter shell 202 are provided with several water passage holes. After the water is treated by the filter ball 201, it will pass through the filter shell 202 and then enter another filter ball 201. The filter shell 202 fills the gap between two adjacent filter balls 201. The filter shell 202 and the filter ball 201 on the front side form a filter section. In this way, several filter sections are arranged in sequence to form a filter assembly 2 in the drain pipe 1. The filter assembly 2 forms a multi-layer filter treatment and provides internal support for the drain pipe 1, increasing the overall strength and preventing the drain pipe 1 from bending when pressed into the drain hole, and also preventing the drain pipe 1 from being deformed locally by the soil pressure.

[0030] The filter housing 202 contains several partition frames 2024, each cylindrical in shape. These partition frames are coaxially aligned and fixedly connected to the front cover 2022. A guide cylinder 2025 passes through the center of the front cover 2022. A central hole 2026 is located at the center of the rear cover 2023. When the rear cover 2023 is aligned with the filter housing 2021, the guide cylinder 2025 passes through the central hole 2026 of the rear cover 2023, thus dividing the internal space of the filter housing 202 into partitions using the partition frames 2024. Several filter layers 2027, each of which is annular, have their central axes coincide. Each filter layer 2027 is filled with filter material. The particle size of the filter material decreases as the diameter of the filter layer 2027 increases. That is, the filter material in the filter layer with the largest diameter has the smallest particle size, while the filter material in the filter layer with the smallest diameter has the largest particle size. At the same time, the filter material is composed of a sand and gravel filling layer with different particle sizes. The particle size of the sand and gravel gradually increases along the direction of water flow. In this way, filter layers 2027 with different particle sizes are formed inside the filter shell 202.

[0031] The filter cartridge 2021 is also equipped with water passage holes. When water flows through the filter cartridge 2021, the particle size distribution from fine to coarse forms a gradually changing pore structure. Initially, the water flows through the outermost layer of fine particles, where the smaller pores can intercept most of the small soil particles. As the water continues to flow, it passes through a layer of larger particles. Although the pores become larger, the previous fine particle layer has already intercepted most of the easily lost soil particles, further preventing soil particles from being carried away by the water flow, thus achieving a good reverse filtration effect.

[0032] In this embodiment, the filter ball 201 is composed of an upper filter hemisphere 2011 and a lower filter hemisphere 2012. The openings of the upper filter hemisphere 2011 and the lower filter hemisphere 2012 are screwed together by a threaded structure. After the two are joined, they form a spherical shell. The upper filter hemisphere 2011 has a threaded hole 2013 at its center. When filling the filter ball 201 with filter gravel, the upper filter hemisphere 2011 and the lower filter hemisphere 2012 can be joined together to form the filter ball 201, and then filter gravel can be filled into the filter ball 201 through the threaded hole 2013. Alternatively, the lower filter hemisphere 2012 can be filled first, and then the upper filter hemisphere 2011 and the lower filter hemisphere 2012 can be joined together, and then filter gravel can be filled into the cavity of the filter ball 201 through the threaded hole 2013 until the cavity of the filter ball 201 is filled.

[0033] The filter housing 202 is also connected to the filter ball 201. Specifically, the guide cylinder 2025 on the filter housing 202 is screwed to the threaded hole 2013 on the upper hemisphere 2011 of the filter ball. Then, filter crushed stone is filled into the cavity of the filter ball 201 through the guide cylinder 2025. Finally, the end cap is screwed to the rear end of the guide cylinder 2025 to seal the filter crushed stone in the filter ball 201. However, it is necessary to ensure that the filter housing 202 has been filled at this time.

[0034] When filling the filter housing 202, first align the front cover 2022 with the filter cartridge 2021, then adjust it so that the rear end of the filter cartridge 2021 faces upwards. Next, lay the filter material inside the filter cartridge 2021. At this point, each filter layer 2027 cannot be completely filled. After partially filling the space inside the filter cartridge 2021, attach the rear cover 2023 to the rear end of the filter cartridge 2021. The rear end of the feed guide cylinder 2025 passes through the central hole 2026 on the rear cover 2023. However, since the rear cover 2023 is not yet fully in place... Fixed to the filter cartridge 2021, the rear cover 2023 can rotate. Several radially arranged packing holes are provided on the rear cover 2023. Different packing holes correspond to different filter layers 2027. Then, a feeding hopper can be connected at the packing holes. After the filter material is put into the feeding hopper, the filter material is uniformly filled in the filter layer 2027 by rotating the rear cover 2023. Finally, the rear cover 2023 is connected and locked to the filter cartridge 2021 by stainless steel bolts. At this time, the filter shell 202 is filled with packing material.

[0035] See Figures 8 to 9 As shown, as another embodiment of this utility model, based on the above embodiment, a threaded through hole can be provided at the center of the cap 5, and a screw 6 can be passed through the threaded through hole. The inner end of the screw 6 (the end located inside the drain pipe 1) is fixed with a top pressure plate 7. When the screw 6 is rotated, the screw 6 will move axially. When the screw 6 moves towards the conical head 4, the top pressure plate 7 will press the filter assembly 2, increasing the stability of the filter assembly 2.

[0036] Meanwhile, the conical head 4 can be connected to the drain pipe 1 through the inner support frame 8. When the drain pipe 1 is pressed into the drain hole, the conical head 4 abuts against the drain pipe 1. The inner support frame 8 is fixed at the front end of the drain pipe 1. The inner support frame 8 has a cross-shaped structure with a through hole in the center. A push rod 9 is fixed on the bottom surface of the conical head 4. The push rod 9 passes through the through hole on the inner support frame 8, so that the conical head 4 can move along the axial direction of the drain pipe 1. An anti-detachment disc 10 is fixed at the rear end of the push rod 9 to prevent the conical head 4 from separating from the inner support frame 8.

[0037] In this embodiment, after the drain pipe 1 is pressed in, the top pressure plate 7 is controlled by the screw rotation to apply a thrust to the filter assembly 2, so that the filter assembly 2 moves along the axis of the drain pipe 1, and then the filter assembly 2 applies a thrust to the conical head 4, so that the conical head 4 moves away from the drain pipe 1. At this time, a gap is generated between the conical head 4 and the drain pipe 1, so that the accumulated water can be discharged from the drain pipe 1.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A new type of retaining wall drainage pipe anti-filtration device, comprising a drainage pipe (1) and an anti-filtration assembly (2), the drainage pipe (1) is provided with a hole (3), the anti-filtration assembly (2) is arranged in the drainage pipe (1) and fills the inside of the drainage pipe (1), characterized in that: The reverse filter assembly (2) includes several reverse filter sections, which are arranged in the drain pipe (1). When the water flows in the drain pipe (1), it can pass through several reverse filter sections. The reverse filtration unit includes a reverse filter ball (201) and a reverse filter shell (202), which are detachably connected. Both the reverse filter ball (201) and the reverse filter shell (202) are made of hard material and are filled with reverse filter material.

2. A new type of retaining wall drainage pipe anti-filtration device according to claim 1, characterized in that: The filter ball (201) is provided with a drain hole and a threaded hole (2013). A guide cylinder (2025) is connected through the threaded hole (2013) and the guide cylinder (2025) is fixed on the filter shell (202).

3. A new type of retaining wall drainage pipe anti-filtration device according to claim 2, characterized in that: The filter housing (202) includes a filter cylinder (2021), a front cover (2022) and a rear cover (2023). The guide cylinder (2025) passes through the front cover (2022) and is fixedly connected to the front cover (2022). The rear cover (2023) is provided with a central hole. When the rear cover (2023) is connected to the filter cylinder (2021), the guide cylinder (2025) passes through the central hole of the rear cover (2023).

4. A new type of retaining wall drainage pipe anti-filtration device according to any one of claims 1 to 3, characterized in that: The filter housing (202) is provided with several partition frames (2024), which divide the internal space of the filter housing (202) into several filter layers (2027). Each filter layer (2027) is annular and filled with filter material.

5. A new type of retaining wall drainage pipe anti-filtration device according to claim 1, characterized in that: The end of the drain pipe (1) is connected to a conical head (4), which is connected to the drain pipe (1) through an inner support frame (8). The inner support frame (8) is fixed to the front end of the drain pipe (1).

6. A new type of retaining wall drainage pipe anti-filtration device according to claim 5, characterized in that: The inner support frame (8) is provided with a through hole, and a push rod (9) is fixed on the conical head (4). The push rod (9) passes through the through hole on the inner support frame (8). When the push rod (9) is subjected to force, the conical head (4) can move along the axial direction of the drain pipe (1).

7. A new type of retaining wall drainage pipe anti-filtration device according to claim 1, characterized in that: The drain pipe (1) is connected to a cap (5) at its end, which limits the reverse filter assembly (2) inside the drain pipe (1).

8. A new type of retaining wall drainage pipe anti-filtration device according to claim 7, characterized in that: A screw (6) is screwed onto the cap (5). One end of the screw (6) located inside the drain pipe (1) is fixed with a pressure plate (10). When the screw (6) rotates, it applies a thrust to the filter assembly (2) through the pressure plate (10).

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