Novel cast iron drain pipe floor penetrating pre-buried water stop pipe hoop
By pre-embedding water-stop clamps in cast iron drainage pipes, the complexity and leakage problems of traditional construction methods are solved, achieving the effects of simplified construction and improved water-stopping effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GANSU NO 1 CONSTR ENG GRP
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-12
Smart Images

Figure CN224352545U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage pipe connection technology, and in particular to a new type of pre-embedded water-stop clamp for cast iron drainage pipes penetrating floor slabs. Background Technology
[0002] In the field of building construction, the traditional method for constructing drainage pipes through floor slabs typically involves pre-drilling holes. The process involves creating holes during the main structural construction phase, then inserting the drainage pipes through these holes later, followed by repairing the holes to complete the installation. However, this method is complex, time-consuming, and inefficient. Furthermore, the subsequent repairs are prone to leakage at the pipe-floor junction due to material shrinkage or poor adhesion, affecting the building's functionality and significantly increasing labor costs and future maintenance expenses. Utility Model Content
[0003] The purpose of this utility model is to provide a new type of pre-embedded water-stop clamp for cast iron drainage pipes penetrating floor slabs, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A novel cast iron drainage pipe with a pre-embedded water-stop clamp penetrating a floor slab includes a pipe body. An upper pipe opening is fixedly installed on the outer wall of the upper end of the pipe body, and a water-stop wing ring is fixedly installed on the outer wall of the upper pipe opening near one end of the pipe body. A lower pipe opening is fixedly installed on the outer wall of the lower end of the pipe body, and a flow guide ring is formed by the inner wall of the pipe body near the lower pipe opening extending downward. An annular groove is formed between the flow guide ring and the lower pipe opening.
[0006] The tube body, upper inlet, lower inlet, and guide ring are an integral structure.
[0007] An upper gasket is provided at one end of the tube body near the upper opening.
[0008] A lower gasket is provided in the groove between the flow guide ring and the lower pipe opening.
[0009] Both the upper and lower gaskets are wear-resistant and aging-resistant flexible rubber gaskets.
[0010] Several fixing wings are fixedly installed on the side wall of the lower pipe opening away from the upper pipe opening, and fixing holes for pre-embedded fixing are opened on the fixing wings.
[0011] Rubber sealing sleeves are provided on the inner walls of both the upper and lower pipe openings.
[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0013] This utility model adopts an integrated pipe body, upper pipe opening, lower pipe opening, and flow guide ring, and uses a pre-embedded installation method. This allows the water-stop pipe clamp to be pre-embedded simultaneously with the main structure during the main construction. When the cast iron drainage pipe is installed, the straight pipe section only needs to be connected to the water-stop pipe clamp. This reduces the need for pre-drilling holes and secondary hole-lifting work, effectively improving the water-stopping effect of the floor slab structure and the overall performance of the structural slab. It also effectively overcomes the complexity of the construction process of the traditional pre-drilled hole method. Attached Figure Description
[0014] Figure 1 This is a front structural diagram of Embodiment 1 of this utility model.
[0015] Figure 2 This is a schematic diagram of the bottom structure of Embodiment 1 of this utility model.
[0016] Figure 3 This is a cross-sectional view of Embodiment 1 of this utility model.
[0017] Figure 4 This is Embodiment 1 of the present utility model. Figure 3 A schematic diagram of the cross-sectional structure at point AA.
[0018] Figure 5 This is a front structural diagram of Embodiment 2 of this utility model.
[0019] Figure 6 This is a cross-sectional view of Embodiment 1 of this utility model.
[0020] Attached figures and their names: 1. Upper pipe opening, 2. Water-stop wing ring, 3. Upper gasket, 4. Guide ring, 5. Lower gasket, 6. Fixed wing, 7. Lower pipe opening, 8. Pipe body, 9. Rubber sealing sleeve. Detailed Implementation
[0021] 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, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0023] Example 1
[0024] like Figure 1-4 As shown, the present invention discloses a novel cast iron drainage pipe pre-embedded water-stop clamp for penetrating floor slabs, comprising a pipe body 8, an upper pipe opening 1 fixedly provided on the upper outer wall of the pipe body 8, and a water-stop wing ring 2 fixedly provided on the outer outer wall of the upper pipe opening 1 near the end of the pipe body 8. The water-stop wing ring 2 can better improve the water-stopping effect of the pre-embedded water-stop clamp.
[0025] A lower pipe opening 7 is fixedly installed on the outer wall of the lower end of the pipe body 8. The inner wall of the pipe body 8 near the lower pipe opening 7 extends vertically outward to form a guide ring 4. An annular groove is formed between the guide ring 4 and the lower pipe opening 7. The guide ring 4 allows the water to flow directly down along the inner wall of the guide ring 4, preventing the water from entering the groove between the guide ring 4 and the lower pipe opening 7.
[0026] The pipe body 8, upper pipe opening 1, lower pipe opening 7, and guide ring 4 are an integrated structure, all made of cast iron. Several fixing wings 6 are fixedly installed on the side wall of the lower pipe opening 7 away from the upper pipe opening 1. Fixing holes are opened on the fixing wings 6. The water-stop clamp is pre-embedded in the floor slab through the fixing wings 6 and bolts. The fixing wings 6 are elongated structures, preferably three in number, to improve stability during pre-embedding. During use, the drainage pipes are respectively inserted and installed on the upper pipe opening 1 and the lower pipe opening 7. The pre-embedded installation of the water-stop clamp allows it to be pre-embedded simultaneously with the main structure during construction. When the cast iron drainage pipe is installed, the straight pipe section only needs to be connected to the water-stop clamp, reducing the need for pre-drilling holes and secondary hoisting work. This effectively improves the water-stopping effect of the floor slab structure and the overall performance of the structural slab, effectively overcoming the complexity of the traditional pre-drilling construction method.
[0027] In order to achieve a seal between the drainage pipe and the water-stop clamp, an upper gasket 3 is provided at the end of the pipe body 8 near the upper pipe opening 1, and a lower gasket 5 is provided in the groove between the guide ring 4 and the lower pipe opening 7. Both the upper gasket 3 and the lower gasket 5 are wear-resistant and aging-resistant flexible rubber gaskets, and they are both tightly fitted to the pipe body 8 and the installed drainage pipe, which facilitates smooth drainage of the drainage pipe and reduces the possibility of water leakage.
[0028] Example 2
[0029] like Figure 5-6 As shown, based on the technology of Embodiment 1, Embodiment 2 differs from Embodiment 1 in that: rubber sealing sleeves 9 are provided on the inner walls of both the upper pipe port 1 and the lower pipe port 7. The rubber sealing sleeves 9 are located between the drainage pipe and the upper pipe port 1 and the lower pipe port 7, respectively, to provide sealing and shock absorption. This also reduces the requirements for the diameter of the drainage pipe and further improves the stability of the drainage pipe connection. However, it should be noted that the connection points between the drainage pipe and the upper pipe port 1 and the lower pipe port 7 need to be inspected and maintained regularly to prevent the rubber sealing sleeves 9 from leaking due to aging.
Claims
1. A novel cast iron drainage pipe with a pre-embedded water-stop clamp penetrating a floor slab, comprising a pipe body (8), characterized in that: An upper pipe opening (1) is fixedly provided on the outer wall of the upper end of the pipe body (8), and a water-stop wing ring (2) is fixedly provided on the outer wall of the upper pipe opening (1) near the end of the pipe body (8); a lower pipe opening (7) is fixedly provided on the outer wall of the lower end of the pipe body (8), and a flow guide ring (4) is formed by extending the inner wall of the pipe body (8) near the lower pipe opening (7) downwards, and an annular groove is formed between the flow guide ring (4) and the lower pipe opening (7).
2. The novel cast iron drainage pipe with pre-embedded water-stop clamp penetrating floor slab as described in claim 1, characterized in that: The tube body (8), upper pipe opening (1), lower pipe opening (7) and guide ring (4) are an integral structure.
3. The novel cast iron drainage pipe with pre-embedded water-stop clamp penetrating floor slab as described in claim 1, characterized in that: The tube body (8) is provided with an upper gasket (3) at one end near the upper opening (1).
4. The novel cast iron drainage pipe with pre-embedded water-stop clamp penetrating floor slab as described in claim 3, characterized in that: A lower gasket (5) is provided in the groove between the guide ring (4) and the lower pipe opening (7).
5. A novel cast iron drainage pipe with pre-embedded water-stop clamp penetrating floor slab according to claim 4, characterized in that: Both the upper gasket (3) and the lower gasket (5) are wear-resistant and aging-resistant flexible rubber gaskets.
6. A novel cast iron drainage pipe with pre-embedded water-stop clamp penetrating floor slab as described in claim 5, characterized in that: Several fixing wings (6) are fixedly installed on the side wall of the lower pipe opening (7) away from the upper pipe opening (1), and fixing holes for pre-embedded fixing of water-stop pipe clamps are opened on the fixing wings (6).
7. A novel cast iron drainage pipe with pre-embedded water-stop clamp through floor slab as described in any one of claims 1-5, characterized in that: Rubber sealing sleeves (9) are provided on the inner walls of both the upper pipe opening (1) and the lower pipe opening (7).