Fabricated direct drainage structure and system

Abstract

The utility model discloses an assembly type direct drainage structure and system. The assembly type direct drainage structure comprises a connecting bottom plate, a water inlet pipe and a water outlet pipe, a first water outlet is formed in the top end of the positioning seat, the positioning seat is detachably connected with the connecting bottom plate, a gap is formed between the positioning seat and the connecting bottom plate, and the positioning seat and the connecting bottom plate are sequentially positioned on the two sides of the floor; the drainage pipe is positioned on the connecting bottom plate and / or the positioning seat, and the drainage pipe penetrates through the floor through hole and is communicated with the first drainage port of the positioning seat. According to the utility model, drainage points are arranged on the steel structure balcony or roof, and after the outer wall and the floor are installed, floor punching and fixed installation are carried out. A module combination structure and a field installation mode are adopted, the building industrialization degree is improved, and meanwhile the building construction efficiency is greatly improved. Due to the fact that the device is installed after the floor slab is poured, point positions can be better controlled, the device and a waterproof structure can be manufactured together, installation time is saved, and waterproof sealing performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a prefabricated direct drainage structure and system. Background Art

[0002] Prefabricated houses are increasingly used in multiple fields because of their convenient assembly and disassembly, easy movement and transportation, etc.

[0003] At present, there are few direct drainage systems for steel structures, and all of them need to be installed and poured synchronously with the main structure, which cannot meet the assembly characteristics of prefabricated components and has low construction efficiency. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect that the direct drainage system of the current steel structure needs to be installed and poured synchronously with the main structure, resulting in low construction efficiency, so as to provide a prefabricated direct drainage structure and system.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0006] A prefabricated direct drainage structure, comprising:

[0007] A connecting bottom plate;

[0008] A positioning seat, a first drainage port is arranged at the top end of the positioning seat, the positioning seat is detachably connected with the connecting bottom plate, there is a distance between the positioning seat and the connecting bottom plate and they are sequentially positioned on both sides of the floor slab;

[0009] A drain pipe, the drain pipe is positioned on the connecting bottom plate and / or the positioning seat, the drain pipe passes through the floor slab through hole and is communicated with the first drainage port of the positioning seat.

[0010] Further optimizing the technical solution, the positioning seat and the connecting bottom plate are connected by at least one screw rod.

[0011] Further optimizing the technical solution, a pressing plate is arranged above the positioning seat, a second drainage port communicated with the first drainage port of the positioning seat is opened on the pressing plate, and a waterproof coiled material positioning gap suitable for positioning the waterproof coiled material is formed between the pressing plate and the positioning seat.

[0012] Further optimizing the technical solution, the top end surface of the positioning seat is a concave surface, and the bottom end surface of the pressing plate is a convex surface adapted to the concave surface.

[0013] Further optimize the technical solution. A first groove is formed at the top end of the positioning seat, and at least one second threaded connection seat is provided on the first groove. A second groove is formed at the top end of the pressing plate, and at least one waist-shaped hole is formed on the second groove. The pressing plate and the positioning seat are connected by a pressing plate connecting bolt that sequentially connects the waist-shaped hole and the second threaded connection seat.

[0014] Further optimize the technical solution. A filter is provided above the pressing plate, and at least one drain hole is formed at the top end of the filter.

[0015] Further optimize the technical solution. An annular protrusion adapted to limit the filter is provided on the top surface of the pressing plate, and at least one side drain port is formed on the side of the annular protrusion.

[0016] An assembled direct drainage system includes:

[0017] A floor slab, on which a floor slab through hole is formed;

[0018] The assembled direct drainage structure is assembled at the floor slab through hole.

[0019] Further optimize the technical solution. The system further includes:

[0020] A grooved plate is provided above the floor slab. The upper part of the positioning seat is pressed on the grooved plate, and the lower part of the positioning seat passes through the grooved plate;

[0021] A waterproof coating layer is provided between the grooved plate and the floor slab.

[0022] Further optimize the technical solution. A waterproof coil is provided above the grooved plate, and the waterproof coil is positioned in the waterproof coil positioning gap between the pressing plate and the positioning seat;

[0023] and / or

[0024] A positioning hole is formed in the grooved plate, and a recessed part is provided on the grooved plate beside the positioning hole. The recessed part is in smooth transition with the inner concave surface of the positioning seat;

[0025] and / or

[0026] A sealing pipe is provided in the floor slab through hole.

[0027] The technical solution of the present utility model has the following advantages:

[0028] 1. The assembled direct drainage structure provided by the present utility model sets drainage points on the steel structure balcony or roof. After the installation of its exterior wall and floor slab is completed, floor drilling is carried out and fixed installation is carried out. When installing the assembled direct drainage structure, the connecting bottom plate and the positioning seat with a drain pipe can be directly installed on both sides of the floor slab respectively, and then the positioning seat and the connecting bottom plate are connected, and the construction is very convenient. The present utility model adopts a modular combination structure and an on-site installation method, which not only improves the degree of building industrialization, but also greatly improves the building construction efficiency.

[0029] Since the present utility model is installed after the floor slab is poured, the points can be better controlled, and it can be made together with the waterproof structure, saving the installation time and increasing the waterproof sealing performance.

[0030] 2. The assembled direct drainage structure provided by the present utility model productizes and parts the drainage components through standardized design, meets the high-precision batch production of the factory, and improves the production efficiency;

[0031] The on-site construction is simple, there is no on-site welding, the disassembly and assembly have low loss, it can be recycled and reused, no construction waste is generated and it meets the environmental protection requirements;

[0032] Improve the universality of building structural components, can be prefabricated in batches in the factory, provide the conditions for integrated design, reduce the design and processing cycle, and improve the efficiency.

[0033] 3. The assembled direct drainage system provided by the present utility model has a compact overall structure, occupies less space, and is applicable to most steel structure walls. This structure is produced entirely industrially, the on-site installation is convenient, and steel structure fasteners are used for connection. The assembled direct drainage structure is a standard industrialized building product. On the assembled building, holes are drilled and fixed according to the predetermined positions. The size can be controlled, and it is installed together with the waterproof coiled material to enhance the waterproof and drainage effects, saving the installation time. On-site, according to the established drawing position information and the provided installation requirements and steps, the assembled direct drainage structure is installed in the established position in an orderly manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 It is a schematic structural diagram of the assembled direct drainage structure provided by the present utility model;

[0036] Figure 2An exploded view of the assembled straight drainage structure provided by the utility model;

[0037] Figure 3 A schematic structural diagram of a first-view of a positioning seat of an assembled straight drainage structure provided by the utility model;

[0038] Figure 4 A second perspective structural schematic diagram of a positioning seat of an assembled straight drainage structure provided by the utility model;

[0039] Figure 5 A schematic diagram of the structure of a locating seat of an assembled straight drainage structure provided by the utility model after being cut open;

[0040] Figure 6 A schematic structural diagram of a pressure plate of an assembled straight drainage structure provided by the utility model from a first perspective;

[0041] Figure 7 A second perspective structural schematic diagram of a pressure plate of an assembled straight drainage structure provided by the utility model;

[0042] Figure 8 A schematic diagram of the structure of a filter with an assembled straight drainage structure provided by the utility model;

[0043] Figure 9 A structural schematic diagram of a connection bottom plate of an assembled straight drainage structure provided by the utility model;

[0044] Figure 10 A schematic diagram of the structure of the assembled direct drainage system provided by the utility model during installation;

[0045] Figure 11 A schematic diagram of the structure of the assembled direct drainage system provided by the utility model;

[0046] Figure 12 This is a cross-sectional view of the assembled direct drainage system provided by the utility model.

[0047] Reference numerals:

[0048] 1. Drain pipe, 2. Connecting base plate, 21. Through hole, 3. Positioning seat, 31. Waterproof coiled material positioning part, 32. Drain pipe positioning part, 33. First groove, 34. First threaded connection seat, 35. Second threaded connection seat, 36. First drain port, 37. Concave surface, 4. Pressure plate, 41. Pressure plate connection bolt, 42. Kidney-shaped hole, 43. Second groove, 44. Annular protrusion, 45. Second drain port, 46. Side drain port, 47. Fourth threaded hole, 48. Convex surface, 5. Filter, 51. Drain hole, 52. Counterbore, 53. Filter positioning bolt, 6. Screw rod, 7. Steel structure, 8. Floor slab, 81. Floor slab through hole, 9. Waterproof coating layer, 10. Grooved plate, 101. Depressed part, 11. Waterproof coiled material, 12. Pipe plug. Detailed implementation manners

[0049] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art. It should be noted that the preferred embodiment of the prefabricated direct drainage structure of the present utility model is described by the method of detachably positioning the positioning seat and the connecting base plate on the floor slab, which is not a limitation on the protection scope of the prefabricated direct drainage structure.

[0050] It should be understood that the terms used herein are only for the purpose of describing specific exemplary embodiments and are not intended to be limiting. Unless otherwise clearly specified in the context, the singular forms "a" and "an" as used herein may also include the plural forms. The terms "include", "comprise" and "have" are inclusive and thus specify the presence of the stated features, elements and / or components, but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof.

[0051] Although terms such as first and second may be used in the text to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another region, layer, or section. Unless clearly indicated in the context, terms such as "first", "second", and other numerical terms do not imply order or sequence when used in the text. Additionally, in the description of the present utility model, unless otherwise clearly specified and defined, the terms "arranged" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0052] For the convenience of description, spatial relative relationship terms may be used in the text to describe the relationship between one element or feature shown in the figure and another element or feature. These relative relationship terms are, for example, "front", "rear", "middle", "inner", "longitudinal", "lateral", "side", "vertical", "outer", etc. Such spatial relative relationship terms are intended to include different orientations of the mechanism during use or operation other than the orientations depicted in the figure. For example, if the mechanism in the figure is flipped, then the element described as "below other elements or features" or "beneath other elements or features" will subsequently be oriented as "above other elements or features" or "over other elements or features". Therefore, the exemplary term "below" may include both upper and lower orientations. The mechanism may be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0053] In recent years, prefabricated buildings have become a hot topic in domestic research and exploration. Prefabricated houses are increasingly utilized in multiple fields due to their convenient assembly and disassembly, easy mobility and transportation, and other characteristics.

[0054] Currently, there are few direct drainage systems for steel structures, and all of them need to be installed and poured synchronously with the main structure, which cannot meet the assembly characteristics of prefabricated components and results in low construction efficiency.

[0055] Based on this, the present utility model mainly focuses on a low-rise steel structure system and provides a direct drainage system structure that can be mass-produced in a standardized and industrialized manner. Adopting a modular combination structure and on-site installation method, it not only improves the degree of building industrialization but also greatly improves the building construction efficiency.

[0056] Embodiment 1

[0057] The specific embodiments of the present utility model will be described in detail below in combination with the assembled direct drainage structure of the first aspect of the present utility model.

[0058] It should be noted that the assembled direct drainage structure of the first aspect of the present utility model is only the preferred embodiment of the present utility model. The assembled direct drainage structure of the present utility model can adopt either the assembled direct drainage structure of the first aspect of the present utility model or other structures. For the convenience of description, the following will be described through the assembled direct drainage structure of the first aspect of the present utility model.

[0059] As Figures 1 to 9 shown, this embodiment discloses an assembled direct drainage structure, which includes a connecting bottom plate 2, a positioning seat 3, and a drain pipe 1. A first drainage port 36 is provided at the top of the positioning seat 3. The positioning seat 3 is detachably connected to the connecting bottom plate 2. There is a spacing between the positioning seat 3 and the connecting bottom plate 2, and they are sequentially positioned on both sides of the floor slab 8. The drain pipe 1 is positioned on the connecting bottom plate 2 and / or the positioning seat 3, and the drain pipe 1 passes through the floor slab through hole 81 and is communicated with the first drainage port 36 of the positioning seat 3. The drain pipe 1 is a PVC water pipe.

[0060] For the above-mentioned assembled direct drainage structure, by setting drainage points on the steel structure balcony or roof, after the installation of its outer wall and floor slab is completed, floor punching is carried out and fixed installation is carried out. And when installing the assembled direct drainage structure, the connecting bottom plate 2 and the positioning seat 3 with the drain pipe 1 positioned thereon can be directly installed on both sides of the floor slab 8 respectively, and then the positioning seat 3 and the connecting bottom plate 2 are connected, and the construction is very convenient. This embodiment adopts a modular combination structure and an on-site installation method, which not only improves the degree of building industrialization, but also greatly improves the building construction efficiency.

[0061] Since this embodiment is installed after the floor slab is poured, the points can be better controlled, and it can be made together with the waterproof structure, saving installation time and increasing the waterproof sealing performance.

[0062] In some embodiments, the positioning seat 3 is divided into a waterproof coiled material positioning part 31 and a drain pipe positioning part 32 that are integrally connected. The drain pipe positioning part 32 is used to embed the drain pipe 1 therein. The waterproof coiled material positioning part 31 is arranged above the drain pipe positioning part 32, and the outer diameter of the waterproof coiled material positioning part 31 is larger than the outer diameter of the drain pipe positioning part 32.

[0063] In some embodiments, the positioning base 3 and the connecting bottom plate 2 are connected by at least one screw 6, and the screw 6 is located around the drain pipe 1. In this embodiment, at least one through hole 21 is provided on the connecting bottom plate 2. At least one first threaded connecting seat 34 is provided at the bottom end of the waterproof coiled material positioning part 31 of the positioning base 3. One end of the screw 6 passes through the through hole 21 on the connecting bottom plate 2 and is positioned by a nut, and the other end of the screw 6 is threadedly positioned on the first threaded connecting seat 34. In this embodiment, the positioning base 3 and the connecting bottom plate 2 are connected by the screw 6, so that the positioning base 3 and the connecting bottom plate 2 clamp the floor slab.

[0064] In some embodiments, a pressing plate 4 is provided above the positioning base 3. A second drain port 45 communicating with the first drain port 36 of the positioning base 3 is provided on the pressing plate 4. A waterproof coiled material positioning gap suitable for positioning the waterproof coiled material 11 is formed between the pressing plate 4 and the positioning base 3. In this embodiment, after the positioning base 3 is positioned, the waterproof coiled material 11 can be arranged above the positioning base 3, and the pressing plate 4 is installed above the positioning base 3. The waterproof coiled material 11 is squeezed and positioned by the pressing plate 4, so as to improve the positioning effect and sealing performance of the waterproof coiled material.

[0065] In some embodiments, the top end surface of the positioning base 3 is a concave surface 37, and the bottom end surface of the pressing plate 4 is a convex surface 48 adapted to the concave surface. Both the concave surface 37 and the convex surface 48 are coiled material laying surfaces. When the pressing plate 4 is assembled on the positioning base 3, the pressing plate 4 and the positioning base 3 squeeze the waterproof coiled material, so that the waterproof coiled material here is arranged obliquely. While effectively positioning the waterproof coiled material, it can ensure that the waterproof coiled material has a good waterproof effect.

[0066] More specifically, the concave surface 37 is arranged as a concave conical surface, and the convex surface 48 is arranged as a convex conical surface, so that the waterproof coiled material can be positioned very smoothly between the concave surface 37 and the convex surface 48. The convex surface 48 matches the concave surface 37 and the size and angle of the first drain port, so that the two can clamp the waterproof coiled material 11 without loosening.

[0067] In some embodiments, a first groove 33 is provided at the top end of the positioning base 3. At least one second threaded connecting seat 35 is provided on the first groove 33. The second threaded connecting seat 35 is used to install a pressing plate bolt to fix the positioning base 3 and the pressing plate 4 by the pressing plate bolt. The first drain port 36 is opened on the first groove 33. A second groove 43 is provided at the top end of the pressing plate 4. At least one kidney-shaped hole 42 is opened on the second groove 43. The second drain port 45 is opened on the second groove 43. The pressing plate 4 and the positioning base 3 are connected by a pressing plate connecting bolt 41 that sequentially connects the kidney-shaped hole 42 and the second threaded connecting seat 35. In this embodiment, since the pressing plate 4 is provided with the kidney-shaped hole 42, the position dimension can be adjusted left and right. Furthermore, the position of the pressing plate 4 can be appropriately adjusted, and the pressing plate 4 is adjusted to a suitable position to ensure the squeezing effect on the waterproof coiled material.

[0068] In some embodiments, a bottom groove is provided at the bottom of the edge of the waterproof coiled material positioning portion 31 of the positioning seat 3. The bottom groove is spliced with the floor slab, and it is the surface spliced with the floor slab. The inner wall surface of the drain pipe positioning portion 32 of the positioning seat 3 is a PVC water pipe splicing surface.

[0069] In some embodiments, a filter 5 is provided above the pressing plate 4. The top end surface of the filter 5 is an outer contact surface, which is the main water inlet position. At least one drain hole 51 is provided at the top end of the filter 5 to increase the drainage space. The drain hole 51 can be set in the shape of a kidney-shaped hole or other shapes. In this embodiment, the filter 5 is a filter plate, and the drain hole 51 is provided with at least one layer, and each layer of drain hole 51 includes at least one drain hole. The provided drain hole 51 enables the water flow to smoothly flow into the second drain port 45 of the pressing plate 4.

[0070] In some embodiments, at least one fourth threaded hole 47 is provided on the top end surface of the pressing plate 4, and at least one counterbore 52 is provided on the side wall edge of the filter 5. The pressing plate 4 and the filter 5 are connected by a filter positioning bolt 53. The filter positioning bolt 53 passes through the counterbore 52 and is connected and positioned in the fourth threaded hole 47.

[0071] In some embodiments, an annular protrusion 44 adapted to limit the filter 5 is provided on the top end surface of the pressing plate 4. At least one side drain port 46 is provided on the side of the annular protrusion 44. In this embodiment, water can flow from the side drain port 46 to the position of the second drain port 45, preventing water from accumulating when there is a small amount of water and causing impurities to accumulate, which affects the appearance environment.

[0072] In some embodiments, a PVC water pipe through hole is provided on the connecting bottom plate 2, and the drain pipe 1 can directly pass through the PVC water pipe through hole without interfering with the PVC water pipe.

[0073] This embodiment provides an assembled direct drainage structure for low-rise residences (such as low-rise buildings like rural houses and villas): a. The drainage component products are made into products and parts through standardized design, meeting high-precision batch production in factories and improving production efficiency; b. The on-site construction is simple, without on-site welding, the disassembly and assembly have low loss, can be recycled and reused, and no construction waste is generated, meeting environmental protection requirements; c. The versatility of building structural components is improved, which can be prefabricated in batches in factories, providing conditions for integrated design, reducing the design and processing cycle, and improving efficiency.

[0074] Embodiment 2

[0075] The following elaborates on the specific embodiments of the present invention in detail in combination with the assembled direct drainage system of the second aspect of the present invention.

[0076] It should be noted that the prefabricated direct drainage system in the second aspect of the present utility model is only a preferred embodiment of the present utility model. The prefabricated direct drainage system of the present utility model can either adopt the prefabricated direct drainage system in the second aspect of the present utility model or adopt other structures. For the convenience of description, the following will be described through the prefabricated direct drainage system in the second aspect of the present utility model.

[0077] As Figures 10 to 12 shown, the prefabricated direct drainage system includes a floor slab 8, a grooved slab 10, a waterproof coating layer 9, a waterproof coiled material 11, and the prefabricated direct drainage structure of Embodiment 1.

[0078] A floor slab through hole 81 is provided in the floor slab 8. The prefabricated direct drainage structure is assembled at the floor slab through hole 81.

[0079] The grooved slab 10 is arranged above the floor slab 8. The upper part of the positioning seat 3 is pressed on the grooved slab 10, and the lower part of the positioning seat 3 passes through the grooved slab 10.

[0080] The waterproof coating layer 9 is arranged between the grooved slab 10 and the floor slab 8, and the waterproof coating layer 9 has a waterproof function.

[0081] A waterproof coiled material 11 is arranged above the grooved slab 10, and the waterproof coiled material 11 is positioned in the waterproof coiled material positioning gap between the pressing plate 4 and the positioning seat 3.

[0082] As Figure 10 shown, the grooved slab 10 is provided with a positioning hole, and a recessed portion 101 is arranged on the grooved slab 10 beside the positioning hole. The recessed portion 101 is in smooth transition with the inner concave surface 37 of the positioning seat 3. Thus, the waterproof coiled material 11 can be very smoothly laid on the recessed portion 101 of the grooved slab 10 and the inner concave surface 37 of the positioning seat 3, so that the waterproof coiled material does not wrinkle and the waterproof performance of the waterproof coiled material is better.

[0083] A sealing pipe 12 is arranged in the floor slab through hole 81. The sealing pipe 12 is a PVC sealing pipe, which protects the inner wall of the floor slab through hole and prevents the floor slab from being damaged or losing ash.

[0084] The specific installation process of the above prefabricated direct drainage system is as follows:

[0085] The floor slab 8 is arranged on the steel structure 7, and a floor slab through hole 81 is opened in the floor slab 8.

[0086] A PVC sealing pipe is placed in the floor slab 8 to protect the inner wall of the floor slab through hole and prevent the floor slab from being damaged or losing ash.

[0087] The drain pipe 1 is installed on the positioning seat 3, and the positioning seat 3 and the drain pipe 1 are placed in the installation position. The screw rod 6 at the bottom of the positioning seat 3 is connected through the wall and assembled with the connecting bottom plate 2. The positioning seat 3 is in contact with the upper part of the floor slab 8, and the connecting bottom plate 2 is in contact with the bottom part of the floor slab 8.

[0088] Spray waterproof coating on the floor slab and lay the slotted plate 10. The hole positions on the slotted plate 10 match the floor slab, as Figure 10 shown.

[0089] Install the waterproof coiled material 11. The waterproof coiled material 11 is laid into the positioning seat 3. Press the waterproof coiled material 11 with the pressing plate 4 and fix and tighten the pressing plate connecting bolt 41 to position the waterproof coiled material 11 with the pressing plate 4.

[0090] Finally, place the filter 5 above the pressing plate 4 and fix it.

[0091] The overall structure of this embodiment is compact, occupies less space, and is applicable to most steel structure walls. This structure is fully industrialized in production, convenient for on-site installation, and connected with steel structure fasteners. The assembled direct drainage structure is a standard industrialized building product. On the assembled building, holes are drilled and fixed according to the predetermined positions. The size is controllable. It is installed together with the waterproof coiled material to enhance the waterproof and drainage effects, save installation time, and orderly install the components at the predetermined positions on site according to the provided installation requirements and steps based on the position information in the established drawings.

[0092] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An assembled direct drainage structure, characterized in that, Comprising: Connecting base plate (2); Positioning seat (3), a first drain opening (36) is provided at the top end of the positioning seat (3), the positioning seat (3) is detachably connected to the connecting base plate (2), there is a spacing between the positioning seat (3) and the connecting base plate (2) and they are sequentially positioned on both sides of the floor slab (8); Drain pipe (1), the drain pipe (1) is positioned on the connecting base plate (2) and / or the positioning seat (3), the drain pipe (1) passes through the floor slab through hole (81) and is communicated with the first drain opening (36) of the positioning seat (3).

2. The prefabricated direct drainage structure according to claim 1, characterized in that, The positioning seat (3) and the connecting base plate (2) are connected by at least one screw rod (6).

3. The prefabricated direct drainage structure according to claim 1, characterized in that, A pressing plate (4) is provided above the positioning seat (3), a second drain opening (45) communicating with the first drain opening (36) of the positioning seat (3) is opened on the pressing plate (4), and a waterproofing membrane positioning gap suitable for positioning the waterproofing membrane (11) is formed between the pressing plate (4) and the positioning seat (3).

4. The prefabricated direct drainage structure according to claim 3, characterized in that, The top end surface of the positioning seat (3) is an inner concave surface (37), and the bottom end surface of the pressing plate (4) is an outer convex surface (48) adapted to the inner concave surface (37).

5. The prefabricated direct drainage structure according to claim 3, wherein, A first groove (33) is opened at the top end of the positioning seat (3), at least one second threaded connection seat (35) is provided on the first groove (33), a second groove (43) is opened at the top end of the pressing plate (4), and at least one waist-shaped hole (42) is opened on the second groove (43); the pressing plate (4) and the positioning seat (3) are connected by a pressing plate connection bolt (41) sequentially connecting the waist-shaped hole (42) and the second threaded connection seat (35).

6. The prefabricated direct drainage structure according to claim 3, characterized in that, A filter (5) is provided above the pressing plate (4), and at least one drain hole (51) is opened at the top end of the filter (5).

7. The prefabricated direct drainage structure according to claim 6, wherein An annular protrusion (44) suitable for limiting the filter (5) is provided on the top end surface of the pressing plate (4), and at least one side drain opening (46) is opened on the side of the annular protrusion (44).

8. An assembled direct drainage system, characterized in that, Comprising: Floor slab (8), a floor slab through hole (81) is opened on the floor slab (8); The assembled direct drainage structure according to any one of claims 1-7, and the assembled direct drainage structure is assembled at the floor slab through hole (81).

9. The prefabricated direct drainage system according to claim 8, characterized in that, The system further comprises: Grooved plate (10), the grooved plate (10) is arranged above the floor slab (8), the upper part of the positioning seat (3) is pressed on the grooved plate (10), and the lower part of the positioning seat (3) passes through the grooved plate (10); Waterproof coating layer (9), the waterproof coating layer (9) is arranged between the grooved plate (10) and the floor slab (8).

10. The prefabricated direct drainage system according to claim 9, characterized in that, A waterproofing membrane (11) is provided above the grooved plate (10), and the waterproofing membrane (11) is positioned in the waterproofing membrane positioning gap between the pressing plate and the positioning seat; and / or Positioning holes are opened on the grooved plate (10), a recessed part (101) is provided on the grooved plate (10) beside the positioning holes, and the recessed part (101) is in smooth transition with the inner concave surface (37) of the positioning seat (3); and / or A sealing pipe (12) is arranged in the floor slab through hole (81).

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