Modularized BDF buried water tank
Through modular design and stable connection structure, the problem of sealing the interface of traditional buried water tanks has been solved, achieving simple and robust connection and efficient installation, thus enhancing the stability and safety of the water tank.
Patent Information
- Application Number
- CN202423243030.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Traditional underground water tanks suffer from complex installation, are prone to errors, and are susceptible to leakage in terms of interface sealing, which affects system performance and safety.
The modular design utilizes external threaded connectors, clamps, and slot structures, combined with sealing rings and locking caps, to ensure a stable connection between the connecting pipe and the inlet. It also provides a robust installation foundation through pre-embedded steel bars and fixing plates, enhancing overall stability.
It achieves a simple and robust connection, reduces the risk of leakage, improves installation efficiency and equipment durability, and enhances safety and ease of operation.
Smart Images

Figure CN223793950U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of underground water tank technology, and in particular to a modular BDF underground water tank. Background Technology
[0002] Stainless steel water tanks are primarily used for storing water resources. BDF sheet is a new type of sheet material in the water tank industry. The name means: B for stainless steel, D for galvanized steel, and F for composite. BDF sheet is a composite of stainless steel and galvanized steel. The side in contact with water is lined with a thin stainless steel sheet to ensure water quality and corrosion resistance, while the outer side is a thicker galvanized steel sheet to provide overall strength and rigidity. Traditional buried water tank designs are complex to install, especially regarding interface sealing, which often presents difficulties. On-site installation is time-consuming and prone to errors. Sealing problems at the interfaces frequently lead to long-term leaks, affecting system performance and safety. Utility Model Content
[0003] The purpose of this utility model is to solve the technical problems mentioned in the background art.
[0004] This utility model adopts the following technical solution: a modular BDF underground water tank, including a foundation and a water tank body. A water inlet is fixedly installed on the surface of the water tank body. A connecting pipe is installed on the surface of the water inlet. An external threaded connector is fixedly installed on the surface of the water inlet. A fixing plate is fixedly installed at the port of the connecting pipe. An extension pipe is fixedly installed on the bottom surface of the fixing plate. A protrusion is fixedly installed on the surface of the fixing plate. A groove is formed inside the protrusion. A locking block is slidably connected inside the groove. A spring is fixedly installed between the locking block and the groove. A locking groove is formed on the inner wall of the external threaded connector. A locking cap is slidably connected to the surface of the connecting pipe.
[0005] Preferably, a drain outlet is fixedly installed on the bottom surface of the water tank body, and a water collection pit is formed on the surface of the foundation. Here, the coordinated operation of the drain outlet and the water collection pit effectively manages and guides the water flow, improves drainage efficiency, reduces water accumulation around the water tank, ensures the ground around the water tank remains dry, and improves structural stability.
[0006] Preferably, sealing rings are fixedly installed on the surfaces of both the extension tube and the fixing plate. The extension tube is inserted inside the water inlet, and the fixing plate is pressed against the end face of the water inlet. Here, the sealing rings on the extension tube and the fixing plate can effectively prevent the leakage of water or other liquids, ensuring a tight connection and waterproof effect.
[0007] Preferably, the locking block and the locking slot are positioned correspondingly, and the locking block and the locking slot are engaged. This provides a stable structure for the connection between the locking cap and the external threaded connector, preventing the connecting pipe from detaching from the inlet during disassembly, thus avoiding damage to equipment and personnel.
[0008] Preferably, the locking cap and the surface of the external threaded connector are connected by a thread, and a pressure pad is fixedly installed inside the locking cap, pressing against the inside of the external threaded connector. This allows for easy disassembly and replacement, facilitating maintenance and inspection. The internal pressure pad increases the sealing between the locking cap and the external threaded connector, further improving the leak-proof capability between the connecting pipe and the inlet.
[0009] Preferably, embedded reinforcing bars are fixedly installed inside the foundation, and a fixing plate is fixedly installed on the surface of the embedded reinforcing bars. A No. 1 nut is threaded onto the surface of the embedded reinforcing bars, and an mounting plate is fixedly installed on the bottom surface of the water tank body, the mounting plate being inserted into the surface of the embedded reinforcing bars. Here, the combined use of the embedded reinforcing bars and the mounting plate provides a solid installation foundation, while also facilitating the assembly and disassembly of the water tank body.
[0010] Preferably, the surface of the fixing plate is provided with a connecting plate, the surface of the connecting plate has an insertion hole, and a side plate is fixedly installed on the surface of the connecting plate. The side plate fits against the side of the water tank body, and a screw is fixedly installed on the surface of the fixing plate. A No. 2 nut is threaded onto the surface of the screw. Here, additional structural support is provided between the water tank body and the foundation, ensuring a firm connection between the water tank and the foundation and reducing displacement and shaking of the water tank during use.
[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0012] 1. In this utility model, the external threaded connector at the water inlet is tightly matched with the thread of the connecting pipe, ensuring easy installation and a firm connection. The end of the connecting pipe is equipped with a fixing plate, and the built-in protrusion and locking block achieve a stable connection through a spring, preventing the connecting pipe from accidentally falling off during use and enhancing safety. In addition, the sealing ring installed between the extension pipe and the fixing plate effectively prevents liquid leakage and protects the environment from pollution. The locking cap reinforces the connector part of the water inlet and makes maintenance and disassembly more convenient, further optimizing the operating experience and maintenance efficiency.
[0013] 2. In this utility model, by installing pre-embedded steel bars inside the foundation and using fixing plates and mounting plates, a solid installation base is provided for the water tank body. This not only enhances the overall stability of the water tank but also facilitates installation and future maintenance. The use of connecting plates and side plates provides additional structural support between the water tank body and the foundation, reducing displacement and shaking during use, thereby increasing the durability of the equipment and the safety of operation. Attached Figure Description
[0014] Figure 1 A schematic diagram of a modular BDF underground water tank is provided for this utility model;
[0015] Figure 2 A schematic diagram of the foundation for a modular BDF underground water tank is provided for this utility model;
[0016] Figure 3 A schematic diagram of the water tank body of a modular BDF underground water tank is provided for this utility model;
[0017] Figure 4 A schematic diagram of a connecting plate for a modular BDF underground water tank is provided for this utility model;
[0018] Figure 5 This utility model provides an assembly diagram of the connecting pipe and water inlet of a modular BDF underground water tank.
[0019] Figure 6 A cross-sectional view of the inlet of a modular BDF underground water tank is provided for this utility model.
[0020] Figure 7 A cross-sectional view of the connecting pipe of a modular BDF underground water tank is provided for this utility model.
[0021] Legend:
[0022] 1. Foundation; 2. Sump; 3. Embedded steel bars; 4. Fixing plate; 5. Nut No. 1; 6. Water tank body; 7. Drain outlet; 8. Mounting plate; 9. Screw; 10. Nut No. 2; 11. Connecting plate; 12. Insertion hole; 13. Side plate; 14. Water inlet; 15. External threaded connector; 16. Connecting pipe; 17. Extension pipe; 18. Fixing plate; 19. Sealing ring; 20. Protrusion; 21. Groove; 22. Locking block; 23. Spring; 24. Pressure pad; 25. Locking cap; 26. Slot. Detailed Implementation
[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0025] Example 1
[0026] Please see Figure 1-3 and Figure 5-6 This utility model provides a technical solution: a modular BDF underground water tank, including a foundation 1 and a water tank body 6. A drain outlet 7 is fixedly installed on the bottom surface of the water tank body 6. A water collection pit 2 is formed on the surface of the foundation 1. The coordinated operation of the drain outlet 7 and the water collection pit 2 effectively manages and guides water flow, improves drainage efficiency, reduces water accumulation around the water tank, ensures the ground around the water tank remains dry, and improves structural stability. A water inlet 14 is fixedly installed on the surface of the water tank body 6, and a connecting... A threaded connector 15 is fixedly installed on the surface of the pipe 16 and the inlet 14. A fixing plate 18 is fixedly installed at the end of the connecting pipe 16. An extension pipe 17 is fixedly installed on the bottom surface of the fixing plate 18. Sealing rings 19 are fixedly installed on the surfaces of both the extension pipe 17 and the fixing plate 18. The extension pipe 17 is inserted into the inlet 14, and the fixing plate 18 is pressed against the end face of the inlet 14. The sealing rings 19 on the extension pipe 17 and the fixing plate 18 can effectively prevent the leakage of water or other liquids, ensuring a tight connection and waterproof effect. A protrusion 20 is fixedly mounted on the surface of the fixed plate 18. A groove 21 is formed inside the protrusion 20. A locking block 22 is slidably connected inside the groove 21. A spring 23 is fixedly installed between the locking block 22 and the groove 21. A slot 26 is formed on the inner wall of the external threaded connector 15. The locking block 22 and the slot 26 are positioned correspondingly and are engaged. This provides a stable structure for the connection between the locking cap 25 and the external threaded connector 15, preventing the connecting pipe 16 from leaking out of the inlet 1 when it is disassembled. There are 4 points of detachment, which may cause damage to equipment and personnel. The surface of the connecting pipe 16 is slidably connected with a locking cap 25. The locking cap 25 and the surface of the external threaded connector 15 are connected by threads. A pressure pad 24 is fixedly installed inside the locking cap 25. The pressure pad 24 is pressed into the inside of the external threaded connector 15, which can be easily disassembled and replaced, facilitating maintenance and inspection. The internal pressure pad 24 increases the sealing between the locking cap 25 and the external threaded connector 15, further improving the leak-proof capability of the connecting pipe 16 and the inlet 14.
[0027] Example 2
[0028] Please see Figure 2-4The foundation 1 has a pre-embedded steel bar 3 fixedly installed inside. A fixing plate 4 is fixedly installed on the surface of the pre-embedded steel bar 3. A first nut 5 is threadedly connected to the surface of the pre-embedded steel bar 3. An installation plate 8 is fixedly installed on the bottom surface of the water tank body 6. The installation plate 8 is inserted into the surface of the pre-embedded steel bar 3. The cooperation between the pre-embedded steel bar 3 and the installation plate 8 provides a solid installation foundation and facilitates the disassembly and assembly of the water tank body 6. A connecting plate 11 is provided on the surface of the fixing plate 4. An insertion hole 12 is opened on the surface of the connecting plate 11. A side plate 13 is fixedly installed on the surface of the connecting plate 11. The side plate 13 fits against the side of the water tank body 6. A screw 9 is fixedly installed on the surface of the fixing plate 4. A second nut 10 is threadedly connected to the surface of the screw 9. This provides additional structural support between the water tank body 6 and the foundation 1, ensuring a firm connection between the water tank and the foundation 1 and reducing displacement and shaking of the water tank during use.
[0029] Working principle: Embedded steel bars 3 are installed inside the foundation 1. These bars are connected to the mounting plate 8 of the water tank via nuts 5, ensuring the bottom of the water tank is firmly fixed to the foundation 1. Additionally, a sump 2 is provided on the surface of the foundation 1 to collect and guide discharged water, preventing water accumulation and potential environmental impact. When installing the water tank body 6, its bottom drain outlet 7 is aligned with the sump 2 for effective drainage management. The water inlet 14 is located at the top and connected to an external threaded connector 15 via a connecting pipe 16. An external threaded connector 15 is provided at the port of the inlet 14 for easy connection to the connecting pipe 16. A fixing plate 18 is installed at the port of the connecting pipe 16. An extension tube 17 is fixed to the bottom of the fixing plate 18. The extension tube 17 is inserted into the inlet 14 and locked by the locking block 22 installed in the protrusion 20 on the fixing plate 18 and the groove 21 on the inner side of the external threaded connector 15. The locking block 22 is connected to the groove 21 by a spring 23. The spring 23 provides the necessary elastic force to ensure the tightness and stability of the connection between the locking block 22 and the groove 26. Sealing rings 19 are installed on the surfaces of the extension tube 17 and the fixing plate 18 to ensure the sealing of the inlet 14 and the connecting tube 16. The outside of the connecting tube 16 is fixed by a locking cap 25. The locking cap 25 is connected to the external threaded connector 15 by threads and a pressure pad 24 is used to enhance the sealing effect.
[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A modular BDF buried water tank comprising a foundation (1) and a water tank body (6), characterized in that: The surface of the water tank body (6) is fixedly installed with a water inlet (14), the surface of the water inlet (14) is installed with a connecting pipe (16), the surface of the water inlet (14) is fixedly installed with an external thread joint (15), the port of the connecting pipe (16) is fixedly installed with a fixed sheet (18), the bottom surface of the fixed sheet (18) is fixedly installed with an extension pipe (17), the surface of the fixed sheet (18) is fixedly installed with a lug (20), the inside of the lug (20) is provided with a groove (21), the inside of the groove (21) is slidably connected with a clamping block (22), the clamping block (22) and the groove (21) are fixedly installed with a spring (23), the inner wall of the external thread joint (15) is provided with a clamping groove (26), the surface of the connecting pipe (16) is slidably connected with a locking cap (25).
2. The modular BDF in-ground water tank of claim 1, wherein: The bottom surface of the water tank body (6) is fixedly installed with a drain port (7), the surface of the foundation (1) is provided with a water collecting pit (2).
3. The modular BDF in-ground water tank of claim 1, wherein: The surface of the extension pipe (17) and the fixed sheet (18) is fixedly installed with a sealing ring (19), the extension pipe (17) is inserted in the inside of the water inlet (14), and the fixed sheet (18) is pressed on the end surface of the water inlet (14).
4. The modular BDF in-ground water tank of claim 1, wherein: The position of the clamping block (22) corresponds to the clamping groove (26), and the clamping block (22) and the clamping groove (26) are clampedly connected.
5. The modular BDF in-ground water tank of claim 1, wherein: The surface of the locking cap (25) and the external thread joint (15) are threadedly connected, the inside of the locking cap (25) is fixedly installed with a pressing pad (24), and the pressing pad (24) is pressed in the inside of the external thread joint (15).
6. The modular BDF in-ground water tank of claim 1, wherein: The inside of the foundation (1) is fixedly installed with a pre-buried steel bar (3), the surface of the pre-buried steel bar (3) is fixedly installed with a fixed plate (4), the surface of the pre-buried steel bar (3) is threadedly connected with a first nut (5), the bottom surface of the water tank body (6) is fixedly installed with a mounting plate (8), and the mounting plate (8) is inserted on the surface of the pre-buried steel bar (3).
7. The modular BDF in-ground water tank of claim 6, wherein: The surface of the fixed plate (4) is provided with a connecting plate (11), the surface of the connecting plate (11) is provided with a jack (12), the surface of the connecting plate (11) is fixedly installed with a side plate (13), the side plate (13) is fitted with the side surface of the water tank body (6), the surface of the fixed plate (4) is fixedly installed with a screw rod (9), and the surface of the screw rod (9) is threadedly connected with a second nut (10).