Pile foundation steel casing mud overflow device
By designing a mud overflow device for pile foundation steel casing, and utilizing structures such as an upper cylinder, an inner extension cylinder, and a water collection trough, the environmental pollution problem caused by irregular mud overflow was solved, and the directional collection and reuse of mud was realized, thus reducing environmental impact.
Patent Information
- Application Number
- CN202521700551.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-11
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-11
AI Technical Summary
In existing technologies, the top of the steel casing lacks a drainage device, which makes it easy for mud to overflow irregularly, causing environmental pollution and muddy conditions on the site.
Design a mud overflow device for steel casing of pile foundation, including an upper cylinder, an inner extension cylinder, a limiting ring and a water collection tank. The limiting ring and the inner extension cylinder form an annular space, which, together with the water collection tank, collects the overflow mud in a directional manner and introduces it into the mud recycling system through the discharge port. Combined with sealing gaskets and telescopic column components, the device is ensured to fit tightly with the steel casing to prevent mud leakage.
It effectively prevents the irregular spread of mud, reduces environmental pollution and mud, and enables the recycling and reuse of mud, meeting environmental protection requirements.
Smart Images
Figure CN224678670U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering construction technology, specifically to a mud overflow device for pile foundation steel casing. Background Technology
[0002] In urban housing construction, municipal engineering, and bridge construction, steel casings are used in conjunction with rotary drilling rigs to complete bored pile construction. Depending on the geological structure, this process requires the use of bentonite or loess to create mud slurry for the inner wall of the hole to prevent collapse. During concrete pouring, because there is no corresponding drainage device at the top of the steel casing, the mud slurry at the top of the casing can easily overflow irregularly onto the ground surface around the pile location. The mud slurry cannot be directly collected and recycled, and the construction process can easily cause muddy sites and safety issues, as well as pollute the environment around the pile location. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a mud overflow device for steel casing piles, which mainly solves the problem of mud overflowing irregularly from the top of the casing onto the ground surface around the pile location due to the lack of a corresponding drainage device for the steel casing. This causes environmental pollution.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a pile foundation steel casing slurry overflow device, comprising an upper cylinder, an inner extension cylinder provided at the lower end of the upper cylinder, the inner extension cylinder being connected to the upper cylinder, a limiting ring being fixedly provided on the periphery of the inner extension cylinder, the steel casing being able to be inserted between the inner extension cylinder and the limiting ring, a water collection trough being provided on one side of the upper cylinder, and a slurry discharge port being provided at the bottom of the water collection trough.
[0005] The above structural design, with its limiting ring and inner extension cylinder, creates an annular space that facilitates the insertion of the steel casing. This, combined with a collection trough, allows for the directional collection of overflowing mud. When mud overflows from the top of the steel casing, it flows along the inner extension cylinder and the upper cylinder into the collection trough and is guided to the discharge port, preventing the mud from spreading irregularly into the surrounding environment and reducing site mud and pollution. The mud collected in the collection trough can be connected to a mud recycling system through the discharge port for direct sedimentation or purification before reuse, reducing mud waste and meeting environmental protection requirements.
[0006] Preferably, two fixing blocks are symmetrically fixedly connected to the side wall of the upper cylinder, and a telescopic column assembly is provided at the lower end of the fixing block. A fixing plate is fixedly connected to the lower end of the telescopic column assembly, and an anchor nail passes through the fixing plate.
[0007] By adopting the above structural design, the device can be fixed to the ground by anchoring the fixed block and the telescopic column assembly. This allows the device to exert downward pressure on the steel casing, ensuring that the steel casing fits tightly with the device structure and effectively preventing mud from leaking out of the gaps.
[0008] Preferably, the telescopic column assembly includes a sleeve fixedly connected to the lower surface of the fixed block, a threaded rod extending into the lower end of the sleeve, a rotating cylinder threadedly connected to the threaded rod, a retaining ring fixedly connected to the upper end of the rotating cylinder, a collar fixedly connected to the lower end of the sleeve, the retaining ring engaging within the collar and being rotatable within the collar, and the lower end of the threaded rod being fixed to the fixed plate.
[0009] The above structural design allows for stepless length adjustment through the threaded connection between the threaded rod and the rotating drum. The rotating engagement of the retaining ring and the collar ensures smooth rotational operation and precise matching of the height difference between the upper cylinder and the ground. By rotating the rotating drum, the length of the telescopic column assembly is shortened, thereby generating downward pressure on the steel casing.
[0010] Preferably, a sealing gasket is installed between the inner extension cylinder and the limiting ring.
[0011] With the above structural design, a sealing gasket is installed between the inner extension cylinder and the limiting ring to effectively fill the gap between the steel casing and the device, prevent mud from leaking from the connection, and ensure that all mud is diverted through the water collection tank.
[0012] Compared with the prior art, this utility model provides a drainage device for road and bridge engineering, which has the following beneficial effects: By incorporating a limiting ring and an inner extension cylinder, a ring-shaped space is formed to facilitate the insertion of the steel casing. This, combined with a collection trough, allows for the directional collection of overflowing mud. When mud overflows from the top of the steel casing, it flows along the inner extension cylinder and the upper cylinder into the collection trough and is guided to the discharge port, preventing the mud from spreading irregularly into the surrounding environment and reducing site mud and pollution. The mud collected in the collection trough can be connected to a mud recycling system through the discharge port for direct sedimentation or purification before reuse, reducing mud waste and meeting environmental protection requirements. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a side view of the present invention; Figure 4 This is a schematic diagram of the internal structure of the telescopic column assembly of this utility model. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see Figure 1-4 This utility model provides a mud overflow device for steel casing pile foundations, including an upper cylinder 1. An inner cylinder 2 is provided at the lower end of the upper cylinder 1, and the inner cylinder 2 is connected to the upper cylinder 1. A limiting ring 3 is fixedly provided on the periphery of the inner cylinder 2. The steel casing 11 can be inserted between the inner cylinder 2 and the limiting ring 3. A water collection trough 4 is provided on one side of the upper cylinder 1, and a slurry discharge port 5 is opened at the bottom of the water collection trough 4. A erosion-resistant, high-toughness rubber hose is connected at the slurry discharge port 5, and the other end of the hose is connected to the mud tank. A sealed connection is formed by fixing with clips or flanges, constructing a complete mud diversion channel. During construction, when the mud level generated by the drilled pile rises and exceeds the top of the steel casing 11, excess mud enters the device and is diverted through the rubber hose, ultimately being transported to the mud tank for centralized storage and subsequent processing.
[0016] Two fixing blocks 7 are symmetrically fixedly connected to the side wall of the upper cylinder 1. A telescopic column assembly 8 is provided at the lower end of the fixing block 7. A fixing plate 9 is fixedly connected to the lower end of the telescopic column assembly 8. Anchor nails 10 pass through the fixing plate 9.
[0017] The telescopic column assembly 8 includes a sleeve 801 fixedly connected to the lower surface of the fixing block 7. A threaded rod 802 extends into the lower end of the sleeve 801. A rotating cylinder 803 is threadedly connected to the threaded rod 802. A retaining ring 804 is fixedly connected to the upper end of the rotating cylinder 803. A collar 805 is fixedly connected to the lower end of the sleeve 801. The retaining ring 804 is engaged in the collar 805 and can rotate within the collar 805. The lower end of the threaded rod 802 is fixed to the fixing plate 9.
[0018] A sealing gasket 6 is installed between the inner extension cylinder 2 and the limiting ring 3. The sealing gasket 6 is pre-fixed in the annular gap, and its cross-sectional shape matches the gap profile. It generates elastic deformation through the squeezing action when the steel casing 11 is embedded, tightly filling the gap between the outer wall of the steel casing 11 and the inner wall of the device, forming a dual leak-proof structure that combines rigid positioning and flexible sealing. This ensures that the steel casing 11 fits tightly with the device structure and effectively prevents mud from leaking from the gap.
[0019] Working principle: In use, the device is installed on the steel casing 11, with the steel casing 11 inserted into the annular space formed between the inner extension cylinder 2 and the limiting ring 3. By rotating the rotating cylinder 803, the length of the telescopic column assembly 8 is adjusted to precisely match the height difference between the upper cylinder 1 and the ground. Through the cooperation of the fixing block 7 and the telescopic column assembly 8, the device can be fixed to the ground by the anchor nails 10. By rotating the rotating cylinder 803 to shorten the length of the telescopic column assembly 8, the device generates downward pressure on the steel casing 11, ensuring a tight fit between the steel casing 11 and the device structure. When the mud overflows from the top of the steel casing 11, it can flow along the inner extension cylinder 2 and the upper cylinder 1, enter the water collection tank 4, and be guided to the discharge port 5, preventing the mud from spreading irregularly to the surrounding environment and reducing mud and pollution on the site. At the discharge port 5, a erosion-resistant, high-toughness rubber hose is connected, with the other end of the hose connected to the mud tank. A sealed connection is formed by fixing with buckles or flanges, constructing a complete mud diversion channel. During construction, when the mud level generated by the bored pile rises above the top of the steel casing 11, the excess mud enters the device and is guided by the rubber hose, and is eventually transported to the mud tank for centralized storage and subsequent processing.
[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A mud overflow device for steel casing of pile foundation, characterized in that: The upper cylinder (1) is provided with an inner cylinder (2) at its lower end. The inner cylinder (2) is connected to the upper cylinder (1). A limiting ring (3) is fixedly provided on the periphery of the inner cylinder (2). A steel protective cylinder (11) can be inserted between the inner cylinder (2) and the limiting ring (3). A water collection trough (4) is provided on one side of the upper cylinder (1). A slurry discharge port (5) is opened at the bottom of the water collection trough (4).
2. The pile foundation steel casing mud overflow device according to claim 1, characterized in that: Two fixing blocks (7) are symmetrically fixedly connected to the side wall of the upper cylinder (1). A telescopic column assembly (8) is provided at the lower end of the fixing block (7). A fixing plate (9) is fixedly connected at the lower end of the telescopic column assembly (8). An anchor nail (10) passes through the fixing plate (9).
3. The pile foundation steel casing mud overflow device according to claim 2, characterized in that: The telescopic column assembly (8) includes a sleeve (801) fixedly connected to the lower surface of the fixed block (7). A threaded rod (802) extends into the lower end of the sleeve (801). A rotating cylinder (803) is threaded onto the threaded rod (802). A retaining ring (804) is fixedly connected to the upper end of the rotating cylinder (803). A collar (805) is fixedly connected to the lower end of the sleeve (801). The retaining ring (804) is engaged in the collar (805) and can rotate within the collar (805). The lower end of the threaded rod (802) is fixed to the fixed plate (9).
4. The pile foundation steel casing mud overflow device according to claim 1, characterized in that: A sealing gasket (6) is installed between the inner tube (2) and the limiting ring (3).