A same-floor drainage pipe

Abstract

The present invention belongs to the technical field of drainage equipment, and discloses a same-layer drainage pipe, including: a pipe body, which is connected to a sewer pipe and has a plurality of overflow ports connected to the inside on its circumferential surface for sewage at the bottom of the backfill layer to enter the pipe body; and a quick-release plugging material, which is arranged in the pipe body and blocks the overflow ports from the inside, and a pull piece is arranged on the quick-release plugging material; the quick-release plugging material buried in the pipe body in the backfill layer is pulled out from the upper sewer pipe opening by the pull piece. The present invention is provided with a removable plugging material taken out from the inside of the upper opening, so as to cooperate with the same-side drainage pipe fitting with a lateral opening, which can not only prevent cement mortar or other foreign matter from entering the pipe body to affect the normal flow of sewage in the sewer pipe, but also facilitate the owner or the construction party to conduct a waterproof test after the pipe fitting is buried underground, so as to avoid the situation where water flows directly into the pipe body and cannot obtain the real verification of the waterproof effect of the waterproof layer.

Description

Technical Field

[0001] The invention belongs to the technical field of drainage equipment, and in particular relates to a same-floor drainage pipe. Background Art

[0002] In the building drainage system, the appliance drainage pipes and drainage lateral branches do not pass through the structural floor of the current layer to the lower layer space, and are laid on the same layer as the sanitary appliances and connected to the drainage riser.

[0003] Compared with the traditional interlayer drainage treatment method, the most fundamental concept change of the same-floor drainage solution is to completely get rid of the constraints between adjacent floors through the reasonable layout of the pipes within the same floor, avoiding a series of troubles and hidden dangers caused by the drainage transverse pipe occupying the lower floor space, including unclear property rights, noise interference, leakage hazards, space limitations, etc. At the same time, the use of wall-mounted sanitary appliances eliminates any sanitary dead corners on the ground, making cleaning extremely convenient. Same-floor drainage is a novel technology in the bathroom drainage system. The drainage pipes are laid within the same floor, and a common water seal pipe fitting is used instead of many P bends and S bends. The overall structure is reasonable, so it is not easy to get blocked, and it is easy to clean and dredge. Users can arrange the location of bathroom sanitary ware according to their own preferences and wishes.

[0004] In the drainage pipe fittings on the same floor, a connecting pipe fitting will be provided on the main pipe, which is used to be buried on the waterproof layer in the backfill layer to discharge the sewage that has infiltrated and accumulated in the backfill layer. However, since the existing pipe fittings cannot be tested for drainage and sealing, especially when performing waterproof tests after installation, if there is water seepage, the accumulated water will be directly discharged from the pipe fitting into the sewer pipe, and it is impossible to test whether the waterproof layer is effective. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a same-layer drainage pipe, which aims to meet the requirements of testing the waterproof layer through a special structural design, while enabling the drainage of water accumulated in the backfill layer.

[0006] The technical solution adopted by the present invention is:

[0007] A same-floor drainage pipe is arranged on a downpipe to collect and discharge sewage that has leaked into a backfill layer; it includes:

[0008] A pipe body connected to the sewer pipe and provided with a plurality of overflow openings on its circumferential surface communicating with the interior for sewage at the bottom of the backfill layer to enter the pipe body; and

[0009] The quick-release plugging material is arranged in the pipe body and blocks the overflow port from the inside. A pull piece is arranged on the quick-release plugging material. The quick-release plugging material buried in the pipe body in the backfill layer is pulled out from the upper downpipe opening by the pull piece.

[0010] It is worth noting that the present invention is a pipe structure arranged on a vertically arranged downpipe. The downpipe is a secondary pipe arranged vertically to connect to the main pipe of the floor drain pipe on each floor. When the floor is under construction, a two-way or three-way pipe will be separately arranged on the downpipe on each floor to connect the floor drain pipe on that floor. The structure of the present invention is similar to the multi-way pipe fitting, and is arranged near the waterproof layer and filled with cement mortar.

[0011] Since the backfill layer is filled with river sand and mixed with a certain amount of cement, it has a certain bonding effect. On the backfill layer are tiles or other finishing materials. Once water accumulates in the upper layer and there are cracks, it will leak into the backfill layer, and seep downward through the gaps in the cement mortar or river sand and gather in the low-lying areas of the waterproof layer. If the accumulated water in this area has no way to be discharged, it will become moldy locally after a long period of accumulation and emit a foul odor, affecting the living comfort. The present invention is set at the lowest depression of the waterproof layer, and by setting the waterproof layer to be inclined toward this place, the sewage that infiltrates from anywhere can be gathered at the installation position and flow into the sewer pipe from the overflow port on the side.

[0012] It is also worth noting that in the existing construction process, since the sewer pipes and floor drain pipes have been set up, the waterproofing effect can be directly tested after the waterproofing membrane is laid. Different from the prior art, the drainage pipe fittings in the present invention are buried below the cement mortar leveling layer when the multi-story building is built. Unlike other floor drain pipe fittings, they cannot be directly blocked from the outside.

[0013] During construction, the construction company has laid waterproof membranes in toilets and kitchens and conducted waterproof tests. However, after the house is delivered, many owners or decoration companies will make another waterproof layer to avoid defects in the original waterproof layer. At this time, when the waterproof test is carried out after laying, the pipe fittings in the present invention only leak out the upper pipe opening, and the side has been blocked. In order to ensure that the subsequent waterproof test can be carried out smoothly and to avoid cement mortar from entering the pipe body from the drain port during construction to cause blockage or influence inside the pipe body, a detachable plugging material is provided in the pipe body to block the overflow port, and it can be pulled out from the upper opening by pulling a pull piece, so as to avoid cement mortar blocking and affecting the pipe body, and to facilitate the later testing of the waterproof effect.

[0014] Furthermore, an annular baffle is provided inside the overflow port, and the liquid flowing in from the upper downcomer is guided by the annular baffle to flow through the overflow port and move downward.

[0015] Since the sewage in the pipe body flows vertically, the overflow port is set on the side, and the external sewage will enter the pipe body vertically from the side. If there is no annular baffle, the sewage flowing in the pipe body may be discharged from the overflow port on the side. In order to prevent the sewage from flowing out of the overflow port, the annular baffle is smoothly downward along the inner wall of the pipe body, and the overflow port is a lateral opening formed by the pipe body protruding outward. The sewage entering from the overflow port will also flow obliquely downward along the annular baffle into the pipe body.

[0016] Furthermore, the overflow port has an expansion cavity connected to the outside, the annular baffle is arranged on the inner side of the expansion cavity and forms a drainage cavity extending in the same direction as the water flow direction in the tube body at the lower part of the annular baffle.

[0017] Furthermore, the quick-release plugging material comprises a fixed structure and a plurality of plugging strips arranged in the circumferential direction of the fixed structure;

[0018] The blocking strip is made of elastic material and extends along the drainage cavity into the enlarged cavity to block the opening connecting the enlarged cavity with the outside.

[0019] The plugging strip cooperates with the expansion cavity to achieve fixation in the vertically placed pipe body. Since the fixing effect of the removable plugging material cannot be determined during construction, it cannot be guaranteed that it will not be affected during construction by fixing it with a pull piece. The plugging strip itself is an elastic material, generally a rubber material. When it is inserted into the expansion cavity from the inside, it is fixed by shrinking elasticity and thus snapped into the expansion cavity.

[0020] Furthermore, the quick-release plugging material comprises a fixed structure and a plurality of plugging strips arranged in the circumferential direction of the fixed structure;

[0021] The blocking strip is made of elastic material and penetrates into the drainage cavity to block the passage from the drainage cavity to the tube body.

[0022] Furthermore, the end of the blocking strip has an enlarged end whose size is larger than any cross-section of the drainage cavity, and the enlarged end is compressed and extended into the drainage cavity to perform blocking.

[0023] Furthermore, the end of the blocking strip has an enlarged end whose size is larger than any cross-section of the drainage cavity, and the enlarged end has a hollow portion, which is pushed into the enlarged cavity and contracted to resist the opening of the enlarged cavity.

[0024] Furthermore, the fixing structure includes a hard fixing disk, and the blocking strips are distributed at equal central angles in the circumference of the fixing disk.

[0025] Furthermore, the blocking strip also has a bending section, and the bending section includes a first recessed portion located at the lower portion of the annular stopper, and also includes a second recessed portion connected to the fixed disk.

[0026] Furthermore, the fixing structure further comprises a grab hook and a grab plate, and the fixing plate is fixed between the grab hook and the grab plate and fixed by bolts to form a three-layer structure;

[0027] A connecting piece connected with the pulling piece is arranged on the grabbing plate.

[0028] The beneficial effects of the present invention are:

[0029] (1) The present invention has a removable plugging material that can be taken out from the inner side of the upper opening, so as to cooperate with the drainage pipe fitting with the opening arranged on the side, which can not only prevent cement mortar or other foreign matter from entering the pipe body and affecting the normal flow of sewage in the sewer pipe, but also facilitate the owner or the construction party to conduct a waterproof test after the pipe fitting is buried underground, so as to avoid the situation where water flows directly into the pipe body and the waterproof effect of the waterproof layer cannot be truly verified;

[0030] (2) The present invention provides a removable plugging structure made of elastic material, which can adapt to and be embedded in a drainage cavity with a large angle bend, thereby forming a better sealing and fixing effect. At the same time, through the structural design of multiple plugging strips, the entire removable plugging can be provided with a supporting force from the circumferential direction to prevent it from falling;

[0031] (3) The present invention is provided with a detachable fixing structure, so that the drainage pipes of each floor can be repeatedly used for installation and removal, thereby improving utilization and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure in which the entire drainage pipe on the same floor of the present invention is connected to the underground pipeline;

[0033] Figure 2 It is an axonometric view of the entire same-floor drainage pipe of the present invention connected to an underground pipeline;

[0034] Figure 3 It is an axonometric view of the upper opening of the same-floor drainage pipe of the present invention;

[0035] Figure 4 It is an axonometric view of the lower opening of the same-floor drainage pipe of the present invention;

[0036] Figure 5 It is a schematic diagram of the split axial side of the entire quick-release plugging material of the present invention;

[0037] Figure 6 It is a side view of the entire quick-release plugging material of the present invention during assembly;

[0038] Figure 7 It is a schematic diagram of the axial side of the entire quick-release plugging material of the present invention during assembly;

[0039] Figure 8It is a cross-sectional view of the same-layer drainage pipe body cut along the center line when the present invention is equipped with some quick-release plugging materials;

[0040] Fig. 9 The present invention Figure 8 An enlarged schematic diagram of the part A in FIG.

[0041] Fig.10 The present invention Figure 8 Axial state diagram in .

[0042] In the figure: 1-down pipe, 2-tube body, 2.1-upper interface, 2.2-lower interface, 3-overflow port, 3.1-enlarged cavity, 3.2-drainage cavity, 4-catch hook, 5-fixed disk, 6-blocking strip, 6.1-hollow part, 6.2-first recess, 6.3-second recess, 7-catch disk, 8-pull piece, 9-connecting piece. DETAILED DESCRIPTION

[0043] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0048] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0049] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a quick-release 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 connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] Embodiment 1:

[0051] This embodiment is a pipe structure, which is arranged on a vertically arranged downpipe 1. The downpipe 1 is a secondary pipe on one side of a main pipe arranged vertically for connecting the floor drain pipe on each floor. When the floor is under construction, a two-way or three-way pipe is separately arranged on the downpipe 1 on each floor for connecting the floor drain pipe on that floor. The structure of this embodiment is similar to the multi-way pipe fitting, and is arranged near the waterproof layer and filled with cement mortar.

[0052] Since the backfill layer is filled with river sand and mixed with a certain amount of cement, it has a certain bonding effect. On the backfill layer are tiles or other finishing materials. Once water accumulates in the upper layer and there are cracks, it will leak into the backfill layer, and seep downward through the gaps in the cement mortar or river sand and gather in the low-lying areas of the waterproof layer. If the accumulated water in this area has no way to be discharged, it will become moldy locally after a long period of accumulation and emit a foul odor, affecting the living comfort.

[0053] Specifically, a same-layer drainage pipe is disclosed, which is arranged on a sewer pipe 1 to collect and discharge sewage that has leaked into a backfill layer; it comprises: a pipe body 2, which is connected to the sewer pipe 1 and has a plurality of overflow ports 3 on its circumferential surface that are connected to the interior for sewage at the bottom of the backfill layer to enter the pipe body 2; and a quick-release plugging material, which is arranged in the pipe body 2 and blocks the overflow ports 3 from the interior, and a pulling piece 8 is provided on the quick-release plugging material; the quick-release plugging material in the pipe body 2 that has been buried in the backfill layer is pulled out from the upper opening of the sewer pipe 1 by the pulling piece 8.

[0054] This embodiment is arranged at the lowest depression of the waterproof layer, and by arranging the waterproof layer to be inclined toward this depression, sewage that penetrates from anywhere can be collected at the installation position and flow into the sewer pipe 1 from the overflow port 3 on the side.

[0055] Embodiment 2:

[0056] The present embodiment also discloses a same-layer drainage pipe, which is arranged on the sewer pipe 1 to collect and discharge sewage that has leaked into the backfill layer; it comprises a pipe body 2, which is connected to the sewer pipe 1 and has a plurality of overflow ports 3 on its circumferential surface that are connected to the interior so that sewage at the bottom of the backfill layer can enter the pipe body 2; and a quick-release plugging material, which is arranged in the pipe body 2 and blocks the overflow ports 3 from the interior, and a pulling piece 8 is provided on the quick-release plugging material; the quick-release plugging material in the pipe body 2 that has been buried in the backfill layer is pulled out from the upper opening of the sewer pipe 1 by the pulling piece 8.

[0057] An annular baffle is provided inside the overflow port 3, through which the liquid flowing in from the upper sewer pipe 1 is guided to flow through the overflow port 3 and move downward. The sewage in the pipe body 2 flows vertically, and the overflow port 3 is provided on the side, so the external sewage will vertically enter the pipe body 2 from the side. If there is no annular baffle, the sewage flowing in the pipe body 2 may be discharged from the overflow port 3 on the side. In order to prevent the sewage from flowing out of the overflow port 3, the annular baffle is provided to smoothly flow downward along the inner wall of the pipe body 2, and the overflow port 3 is a lateral opening formed by the pipe body 2 protruding outward, and the sewage entering from the overflow port 3 will also flow obliquely downward into the pipe body 2 along the annular baffle.

[0058] The overflow port 3 has an expansion cavity 3.1 communicating with the outside. The annular baffle is arranged inside the expansion cavity 3.1 and forms a drainage cavity 3.2 extending in the same direction as the water flow direction in the tube body 2 at the lower part of the annular baffle.

[0059] The quick-release plugging material comprises a fixed structure and a plurality of plugging strips 6 arranged in the circumferential direction of the fixed structure; the plugging strips 6 are made of elastic material and extend along the drainage cavity 3.2 into the enlarged cavity 3.1 to block the opening of the enlarged cavity 3.1 communicating with the outside.

[0060] The blocking strip 6 cooperates with the enlarged cavity 3.1 to achieve fixation in the vertically placed pipe body 2. Since the fixing effect of the removable blocking material cannot be determined during construction, it cannot be guaranteed that it will not be affected during construction by fixing it with the pull piece 8. The blocking strip 6 itself is made of elastic material, generally rubber, and when it is inserted into the enlarged cavity 3.1 from the inside, it is fixed by shrinking elasticity, so that it is clamped in the enlarged cavity 3.1.

[0061] The quick-release plugging material comprises a fixed structure and a plurality of plugging strips 6 arranged in the circumferential direction of the fixed structure; the plugging strips 6 are made of elastic material and penetrate into the drainage cavity 3.2 to block the passage from the drainage cavity 3.2 to the tube body 2.

[0062] The end of the blocking strip 6 has an expanded end with a size larger than any cross-section of the drainage cavity 3.2, and the expanded end is compressed and extended into the drainage cavity 3.2 to block the drainage cavity 3.2. The end of the blocking strip 6 has an expanded end with a size larger than any cross-section of the drainage cavity 3.2, and the expanded end has a hollow core 6.1, and the hollow core 6.1 is pushed into the enlarged cavity 3.1 and contracted to abut against the opening of the enlarged cavity 3.1.

[0063] The fixing structure includes a hard fixing disk 5, and the blocking strips 6 are distributed at equal central angles around the fixing disk 5. The blocking strips 6 also have a bending section, which includes a first recess 6.2 at the lower part of the annular stopper and a second recess 6.3 connected to the fixing disk 5.

[0064] The fixed structure also includes a grab hook 4 and a grab plate 7. The fixed plate 5 is fixed between the grab hook 4 and the grab plate 7 and fixed by bolts to form a three-layer structure. A connecting piece 9 connected to the pulling piece 8 is provided on the grab plate 7.

[0065] Embodiment 3:

[0066] In this embodiment, Figure 1-10 As shown, a vertical drainage structure arranged in the middle of a sewer pipe 1 on the same floor is disclosed, specifically a pipe body 2 having two upper and lower openings, namely an upper interface 2.1 and a lower interface 2.2, for connecting the sewer pipe 1.

[0067] The pipe body 2 is provided with a plurality of overflow ports 3 around the pipe body 2, so that the lateral accumulated water can enter the pipe body 2 from the overflow ports 3 and then enter the sewer pipe 1 for discharge. Since the pipe body 2 in this embodiment is arranged in the cement mortar layer, on the laid waterproof layer, and the overflow ports 3 are just fitted on the waterproof layer, the accumulated water accumulated in the waterproof layer can be discharged smoothly. Since the cement mortar will block the overflow ports 3 when it is laid, and enter into the overflow ports 3 to affect the water flow inside the pipe body 2, a plugging material is usually provided on the opening thereof, and is removed after the waterproof effect is tested.

[0068] However, in order to overcome the problem of cement mortar or mud entering and affecting the normal flow of water in the pipe body 2, and at the same time to meet the test of the waterproof layer, this embodiment achieves the effect of preventing mud and sand by providing a removable plugging material that can be taken out from the opening inside the pipe body 2.

[0069] exist Figure 8-10 The structure of the overflow port 3 is shown in detail in the figure. It can be seen from the cross-sectional view that there is a folded channel from the outer end face of the overflow port 3 to the inner side of the tube body 2, including an expansion cavity 3.1 and a drainage cavity 3.2.

[0070] The expansion cavity 3.1 is close to the outer end face of the overflow port 3, and its cross-sectional space is relatively large, and is used to accommodate a structure with elastic contraction characteristics, so as to facilitate blocking the overflow port 3 from the inside. Since the pipe body 2 is arranged on the vertical downpipe 1, in order to avoid affecting the normal vertical flow of sewage, the diameter inside the pipe body 2 always remains unchanged, and is consistent with the inner diameter of the upper and lower downpipes 1, thereby achieving a smooth transition.

[0071] However, in order to achieve lateral inflow of accumulated water, the middle part of the pipe body 2 is thickened to form a downwardly extending channel, thereby preventing the sewage in the pipe body 2 from leaking out of the overflow port 3.

[0072] As can be seen in the figure, an annular baffle is provided on the inner wall of the pipe body 2, and the inner side of the annular baffle is the drainage chamber 3.2. The expansion chamber 3.1 is provided at the upper oblique part of the drainage chamber 3.2, thereby forming a channel with a height difference. The sewage in the pipe body 2 must have a force opposite to its flow direction to overcome the kinetic energy and gravitational potential energy to move upward.

[0073] The removable plugging material comprises a fixed disk 5 and a plurality of plugging strips 6 arranged on the fixed disk 5. A pulling piece 8 is provided in the middle of the fixed disk 5. The entire removable plugging material can be pulled upward by pulling the pulling piece 8 from the upper opening.

[0074] The blocking strip 6 is different from the fixing plate 5. The fixing plate 5 is made of metal or other hard plastic materials, while the blocking strip 6 is made of soft rubber material and has high elasticity. The blocking strip 6 includes a hollow portion 6.1, a first recess 6.2 and a second recess 6.3, wherein the first recess 6.2 and the second recess 6.3 are solid structures and only have high bending performance, while the hollow portion 6.1 is used to be arranged in the enlarged cavity 3.1 to completely block its opening as shown in the figure.

[0075] During installation, each blocking strip 6 is inserted into the drainage cavity 3.2 by hand from the lower interface 2.2, so that the hollow portion 6.1 can be smoothly inserted into the expansion cavity 3.1. Since the hollow area inside the hollow portion 6.1 is large in volume and the inner wall is thin, it has a high compressible deformation and is easy to be directly inserted.

[0076] At the same time, in order to further improve the blocking and sealing effect of the hollow part 6.1 in the present embodiment, a protruding structure is provided on the outer surface of the hollow part 6.1. When the blocking strip 6 is inserted and the position of the hollow part 6.1 cannot be adjusted internally, the protruding structure is held from the outside of the overflow port 3 by hand and pulled outward so that its end face completely covers the opening part of the overflow port 3. This can maximize the installation efficiency during the actual assembly process.

[0077] It is worth noting that the diagram in this embodiment is only an example. In actual use, the number of overflow ports 3 is significantly less than the setting density in the diagram. In theory, there is no need to insert too many blocking strips 6 therein, and the resistance to pulling from the upper port is also significantly smaller.

[0078] Since the drainage cavity 3.2 is arranged upward and most of the structure of the blocking strip 6 is inserted therein, two recesses are provided to facilitate pulling from above. The first recess 6.2 cooperates with the lower part of the annular baffle. During the pulling process, the first recess 6.2 is a direct force point, where a hard part is provided, which has a small deformation during pulling and can directly transmit the pulling force to the internal blocking strip 6 structure, so that the hollow part 6.1 shrinks in volume and is pulled out.

[0079] The second recessed portion 6.3 is connected to the fixing plate 5 and has high elasticity and toughness, and can generate a certain deformation for buffering when the fixing plate 5 is pulled upward.

[0080] The figure shows that a large hole is provided in the middle of the fixing plate 5, and a plurality of small holes are provided around the large hole for installing the grab plate 7 and the grab hook 4. The grab plate 7 and the grab hook 4 are fixedly connected by bolts, clamping the fixing plate 5 in the middle thereof. A connecting piece 9 is also provided on the grab plate 7 through threaded engagement, and the connecting piece 9 is used to connect the pulling piece 8, that is, a nylon rope. The end of the nylon rope passes around the inner cavity of the connecting piece 9, and is fixed in the inner cavity thereof by a tightening bolt provided on the connecting piece 9.

[0081] The present invention is not limited to the above optional implementations, and anyone can derive other various forms of products under the enlightenment of the present invention. The above specific implementations should not be understood as limiting the scope of protection of the present invention. The scope of protection of the present invention should be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. A same-layer drainage pipe, which is arranged on a downpipe to collect and discharge sewage that has leaked into the backfill layer; characterized in that: include: A pipe body (1) is connected to a sewer pipe and is provided on its circumferential surface with a plurality of overflow ports (3) communicating with the interior for allowing sewage at the bottom of the backfill layer to enter the pipe body (1); and A quick-release plugging material is arranged in the pipe body (1) and blocks the overflow port (3) from the inside, and a pull piece (8) is provided on the quick-release plugging material; the quick-release plugging material that has been buried in the pipe body (1) in the backfill layer is pulled out from the upper downpipe opening by means of the pull piece; An annular baffle is provided inside the overflow port (3), and the liquid flowing in from the upper downpipe is guided by the annular baffle to flow through the overflow port (3) and move downward; The overflow port (3) has an expansion cavity (3.1) connected to the outside, the annular baffle is arranged inside the expansion cavity (3.1) and forms a drainage cavity (3.2) extending in the same direction as the water flow direction in the tube body (1) at the bottom of the annular baffle; The quick-release plugging material comprises a fixed structure and a plurality of plugging strips (6) arranged in a circumferential direction of the fixed structure; The blocking strip (6) is made of elastic material and extends along the drainage cavity (3.2) into the expansion cavity (3.1) to block the opening connecting the expansion cavity (3.1) to the outside; The end of the blocking strip (6) has an enlarged end whose size is larger than any cross section of the drainage cavity (3.2), and the enlarged end has a hollow portion (6.1), and the hollow portion (6.1) is pushed into the enlarged cavity (3.1) and the hollow portion (6.1) is contracted to abut against the opening of the enlarged cavity (3.1); The outer surface of the hollow part (6.1) is provided with a protruding structure; the blocking strip (6) also has a bent section, the bent section includes a first recessed portion (6.2) located at the lower part of the annular stopper, and the first recessed portion (6.2) is a solid structure.

2. A same-floor drainage pipe according to claim 1, characterized in that: The fixing structure comprises a hard fixing disk (5), and the blocking strips (6) are distributed at equal central angles in the circumference of the fixing disk (5).

3. A same-floor drainage pipe according to claim 2, characterized in that: The bent section also includes a second recess (6.3) connected to the fixing disk (5).

4. A same-floor drainage pipe according to claim 2, characterized in that: The fixed structure further comprises a grab hook (4) and a grab plate (7), wherein the fixed plate (5) is fixed between the grab hook (4) and the grab plate (7) and is fixed by bolts to form a three-layer structure; a connecting piece (9) connected to the pulling piece (8) is provided on the grab plate (7).

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