Foundation pit drainage device for building construction
By designing a floating seat and a sliding connection drainage pipe structure, combined with a filter cover and a collection cylinder, the problems of easy clogging of the foundation pit drainage device and difficulty in collecting floating impurities were solved, achieving efficient and safe foundation pit drainage.
Patent Information
- Application Number
- CN202520463048.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Existing foundation pit drainage devices are easily clogged by mud, sand, and debris, making it difficult to collect floating impurities, which affects drainage efficiency and equipment safety, and increases maintenance costs.
A foundation pit drainage device was designed, comprising a floating seat, a drain pipe, a filter cover, a collection cylinder, and a float. The device is kept afloat on the water surface by the float, the drain pipe is slidably connected to the cross, the filter cover is in contact with the bottom of the foundation pit, and the filter plate and collection hopper are installed inside the filter cover to achieve impurity collection and filtration.
This ensures that drainage efficiency is unaffected by water level changes, effectively collects floating impurities, prevents impurities from entering the equipment, reduces the risk of blockage and damage, and improves the purity of drainage and equipment safety.
Smart Images
Figure CN223867280U_ABST
Abstract
Description
Technical Field
[0001] This utility model mainly relates to the field of foundation pit drainage equipment technology, specifically a foundation pit drainage device for building construction. Background Technology
[0002] In the construction process, foundation pit drainage is a crucial step. After excavation, groundwater and rainwater often accumulate in the foundation pit. If not drained promptly and effectively, this can severely impact construction progress, project quality, and construction safety. Currently, common foundation pit drainage methods include open ditch drainage and wellpoint dewatering. Open ditch drainage typically involves setting up drainage ditches and collection wells at the bottom of the foundation pit, and then pumping water out of the collection wells. However, this method has several drawbacks. On the one hand, open ditches are easily clogged by silt, sand, and debris within the foundation pit, leading to poor drainage and requiring frequent cleaning and maintenance, consuming significant manpower and resources. On the other hand, open ditch drainage struggles to effectively collect impurities floating on the water surface, which may enter the pump, causing damage, affecting drainage efficiency, and increasing equipment maintenance costs. To address these issues, this application provides a foundation pit drainage device for building construction. Utility Model Content
[0003] To achieve the above objectives, this utility model employs the following technical solution:
[0004] A foundation pit drainage device for building construction includes a floating base, a drainage pipe fitted inside the floating base, a filter cover fixedly installed at the bottom of the drainage pipe, a connecting cover fixedly installed at the bottom of the floating base, a detachable collection cylinder arrayed at the bottom of the connecting cover, a collection hopper fixed at the center of the bottom of the filter cover, and the collection hopper and the filter cover being connected by the arrayed connecting pipes.
[0005] The four corners of the bottom of the float seat are fixed with floats, and a cross is fixed on the float seat. The drain pipe passes through the cross and is slidably connected. The outer ring of the drain pipe is fixed with a protrusion. The inner ring of the cross is symmetrically provided with a sliding groove. The protrusion abuts against the sliding groove. The outer ring of the drain pipe is fixed with a retaining ring at the top of the protrusion. The retaining ring abuts against the top of the cross.
[0006] The outer ring of the connecting cover has an array of water inlets, the bottom of the connecting cover has an array of through slots, the collecting cylinder is located at the bottom of each through slot, the connecting cover is provided with a filter plate, and the collecting hopper is located at the bottom of the filter plate.
[0007] Compared with the prior art, the beneficial effects of this utility model are:
[0008] This utility model features a simple structure, facilitating installation and use. By incorporating a float ball at the bottom of the floating base and a cross-shaped sliding connection structure with the drain pipe, it ensures that the filter cover remains in constant contact with the bottom of the pit, preventing reduced drainage efficiency due to water level changes and significantly shortening the drainage time. During drainage, the water flowing towards the floating base carries floating impurities into the collection cylinder, effectively collecting them. Simultaneously, a filter plate inside the connecting cover blocks larger particles, and the connection between the collection hopper and the filter cover via a pipe further ensures the purity of the drainage, preventing impurities from entering the drain pipe and external water pump, effectively reducing the risk of equipment blockage or damage due to impurities. Attached Figure Description
[0009] Appendix Figure 1 This is a first-view structural schematic diagram of the present invention;
[0010] Appendix Figure 2 This is a cross-sectional structural schematic diagram of the present invention;
[0011] Appendix Figure 3 This is a schematic diagram of the second-view structure of this utility model;
[0012] Appendix Figure 4 This is an exploded structural diagram of the present invention;
[0013] Appendix Figure 5 This is a schematic diagram of the structure of the collection cylinder of this utility model.
[0014] The following are the labels in the attached diagram: 1. Float; 2. Drain pipe; 3. Filter cover; 4. Connecting cover; 5. Collection cylinder; 6. Collection hopper; 7. Connecting pipe; 8. Float; 9. Protrusion; 10. Baffle ring; 11. Inlet; 12. Through groove; 13. Filter plate. Detailed Implementation
[0015] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.
[0016] Referring to the accompanying drawings, a foundation pit drainage device for building construction includes a floating base 1, a drainage pipe 2 disposed inside the floating base 1, a filter cover 3 fixedly disposed at the bottom of the drainage pipe 2, the other end of the drainage pipe 2 being connected to an external water pump, a connecting cover 4 fixedly disposed at the bottom of the floating base 1, a detachable collection cylinder 5 arranged in an array at the bottom of the connecting cover 4, an array of through holes arranged on the collection cylinder 5, a collection hopper 6 fixedly disposed at the center of the bottom of the filter cover 3, and the collection hopper 6 being connected to the filter cover 3 through an array of connecting pipes 7.
[0017] The four corners of the bottom of the floating seat 1 are fixed with floats 8, and a cross is fixed on the floating seat 1. The drain pipe 2 passes through the cross and is slidably connected. The outer ring of the drain pipe 2 is fixed with protrusions 9. The inner ring of the cross is symmetrically provided with sliding grooves. The protrusions 9 abut against the sliding grooves. The outer ring of the drain pipe 2 is fixed with a retaining ring 10 at the top of the protrusions 9. The retaining ring 10 abuts against the top of the cross. This structural design allows the filter cover 3 to contact the bottom of the pit, making the extraction more thorough and rising as the water level decreases.
[0018] The outer ring of the connecting cover 4 has an array of water inlets 11, and the bottom of the connecting cover 4 has an array of through slots 12. The collecting cylinder 5 is located at the bottom of each through slot 12. The connecting cover 4 is equipped with a filter plate 13, and the collecting hopper 6 is located at the bottom of the filter plate 13. This structural design blocks impurities.
[0019] When in use, the device is placed in the pit and floats on the water surface under the action of the float seat 1 and the float ball 8. At the same time, the collection cylinder 5 is submerged in the water. The external water pump is started and the water flows through the filter cover 3 and is discharged through the drain pipe 2. During the process of pumping out the accumulated water, the water on the surface will flow towards the float seat 1, causing the impurities floating on the water surface to enter the filter cover with the water flow, and then enter each collection cylinder 5. After the pumping is completed, the collection cylinder 5 is removed and the impurities are cleaned. A portion of the water flows through the filter plate 13 and is discharged through the connecting pipe 7 and then through the drain pipe 2.
[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A foundation pit drainage device for building construction, comprising a floating base (1), characterized in that: A drain pipe (2) is installed inside the floating seat (1). A filter cover (3) is fixedly installed at the bottom of the drain pipe (2). A connecting cover (4) is fixedly installed at the bottom of the floating seat (1). A collection cylinder (5) is detachably arranged in an array at the bottom of the connecting cover (4). A collection bucket (6) is fixed at the center of the bottom of the filter cover (3). The collection bucket (6) and the filter cover (3) are connected by an array of connecting pipes (7).
2. The foundation pit drainage device for building construction according to claim 1, characterized in that: The float seat (1) has four fixed floats (8) at the bottom corners. A cross is fixed on the float seat (1). The drain pipe (2) passes through the cross and is slidably connected. The outer ring of the drain pipe (2) has a fixed protrusion (9). The inner ring of the cross has symmetrical grooves. The protrusion (9) abuts against the groove. The outer ring of the drain pipe (2) is fixedly provided with a retaining ring (10) at the top of the protrusion (9). The retaining ring (10) abuts against the top of the cross.
3. A foundation pit drainage device for building construction according to claim 1, characterized in that: The outer ring of the connecting cover (4) is provided with an inlet (11), the bottom of the connecting cover (4) is provided with a through groove (12), the collecting cylinder (5) is provided at the bottom of each through groove (12), the connecting cover (4) is provided with a filter plate (13), and the collecting hopper (6) is located at the bottom of the filter plate (13).