Bentonite extrusion solidification prevention device
By designing an adjustable sealing cap and ring cutter device, the problem of non-uniformity caused by the differences in extrusion characteristics and consolidation requirements of bentonite in different foundations was solved, enabling flexible adjustment of the constraint strength and range, and improving the uniformity and consolidation efficiency of the foundation soil.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-05-15
AI Technical Summary
Due to the significant differences in extrusion characteristics and consolidation requirements of bentonite in different foundations, the use of fixed volume constraint frames leads to an increase in the heterogeneity of the foundation soil.
An adjustable device including a sealing cap and a ring cutter was designed. The chamber space is adjusted by sliding the sealing cap to provide additional space to accommodate bentonite deformation and to limit excessive extrusion through friction, thus adapting to different geological conditions and engineering requirements.
It enables flexible adjustment of constraint strength and range according to geological conditions and engineering requirements, reduces the unevenness of bentonite extrusion, and improves the uniformity and consolidation efficiency of foundation soil.
Smart Images
Figure CN224247721U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bentonite experimental technology, and in particular to a bentonite anti-extrusion consolidation device. Background Technology
[0002] Bentonite is a non-metallic mineral with montmorillonite as its main mineral component. It has good ion exchange properties and is widely used in industry. In practical applications, anti-extrusion consolidation devices typically require the following technologies:
[0003] 1. Constraint mechanism, used to divide bentonite into different zones to facilitate control of the consolidation process;
[0004] 2. Drainage mechanism, used to draw water to the ground;
[0005] 3. Pressure application mechanism, which precisely controls the pressure applied to bentonite to shape it;
[0006] The external frame acts as a rigid constraint, like a sturdy container wall, bearing the lateral pressure transmitted from the bentonite. Applying pressure can make the bentonite particles more compactly arranged, accelerating the consolidation process. Bentonite contains a large amount of pore water, and drainage holes are provided at the parts of the device that come into contact with the bentonite. The drainage pipes and drainage holes are designed to drain this pore water.
[0007] In foundation treatment engineering, for different foundation types of buildings (such as shallow foundations and pile foundations), the extrusion characteristics and consolidation requirements of bentonite differ greatly in soft soil foundations and sandy soil foundations. The volume of bentonite that needs to expand is different. Using a fixed volume constraint frame cannot be flexibly adjusted. At the same time, if the bentonite injected into the foundation is extruded outward, it will lead to an increase in the heterogeneity of the foundation soil. Utility Model Content
[0008] To address the shortcomings of existing technologies, this utility model provides a bentonite anti-extrusion consolidation device, which solves the technical problems of large differences in the extrusion characteristics and consolidation requirements of bentonite, different volumes of bentonite need to expand, the inflexibility of using a fixed-volume constraint frame, and the increased unevenness of the foundation soil if the bentonite injected into the foundation is extruded outward.
[0009] To achieve the above objectives, this utility model provides the following technical solution:
[0010] A bentonite anti-extrusion consolidation device includes a sealing cap, a ring cutter, and a base. A mating sleeve layer is fixedly installed inside the sealing cap. Adjustment components are provided on the two inner sidewalls of the mating sleeve layer. Each adjustment component includes a pressure plate and a rebound rod. The top end of the ring cutter is slidably connected to the sealing cap.
[0011] Preferably, an outer ring sleeve for supporting the connection is fixedly installed on the surface of the ring cutter, and a constraint straight plate for fixing the ring cutter is fixedly installed on the side end of the outer ring sleeve;
[0012] Each of the constraining straight plates is rotatably mounted with a fastening bolt on its outer side, and at least two downward-protruding positioning oblique blades are fixedly mounted on the bottom end of the outer ring sleeve, with the outer side of each positioning oblique blade being a beveled design.
[0013] A drainage groove is provided at the top of the base.
[0014] Preferably, a threaded rod for driving the pressure plate is rotatably mounted on the top of the sealing cover;
[0015] The end of the threaded rod is rotatably mounted with a shaft end rotating ring for connection. Two retaining seats are mounted on the surface of the shaft end rotating ring, and two oblique support rods are rotatably mounted on the surface of the shaft end rotating ring.
[0016] Each of the inclined support rods rotates and engages with the groove at the end of the pressure plate. A pressure sensor is installed inside the sealing cover, and a pressure mechanism is installed at the top of the sealing cover.
[0017] Compared with the prior art, the present invention has the following beneficial effects;
[0018] In this invention, by pulling the sealing cap, the sealing cap slides on the top of the ring cutter, adjusting the space of the sealing cap chamber inside the ring cutter. At the same time, by making the sealing cap and the ring cutter adjustable, when the bentonite tends to be squeezed upward under pressure, the sealing cap can slide upward, providing additional space to accommodate the slight deformation of the bentonite. Meanwhile, the friction and resistance of the sealing cap itself limit the excessive extrusion of the bentonite.
[0019] In this invention, by pulling the sealing cap, the sealing cap slides on the top of the ring cutter, adjusting the space of the sealing cap chamber inside the ring cutter. At the same time, by making the sealing cap and the ring cutter adjustable, the sealing cap and the ring cutter can slide and adjust each other, which can change the constraint strength and range according to different geological conditions and engineering requirements. The sliding structure can expose the surface of the bentonite, which is convenient for observation and monitoring. Attached Figure Description
[0020] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0021] Figure 1 This is a structural diagram of the overall consolidation device of this utility model;
[0022] Figure 2This is a structural diagram of the outer ring sleeve of this utility model;
[0023] Figure 3 This is a structural diagram of the sealing cap of this utility model;
[0024] Figure 4 This is a structural diagram of the pressure plate of this utility model.
[0025] In the diagram: 11. Sealing cap; 12. Ring cutter; 13. Base; 14. Outer ring sleeve; 15. Positioning oblique cutter; 16. Constraint straight plate; 17. Threaded rod; 18. Shaft end rotating ring; 19. Butt sleeve layer; 21. Pressure plate; 22. Springback rod; 23. Angled support rod. Detailed Implementation
[0026] This application provides a bentonite anti-extrusion consolidation device, which effectively solves the problem of significant differences in the extrusion characteristics and consolidation requirements of bentonite. Different bentonite volumes require different expansion volumes, and using a fixed-volume constraint frame cannot be flexibly adjusted. Furthermore, if the bentonite injected into the foundation is extruded outwards, it will increase the heterogeneity of the foundation soil. By pulling the sealing cap, the sealing cap slides at the top of the ring cutter, adjusting the space of the sealing cap chamber inside the ring cutter. Simultaneously, by designing the sealing cap and ring cutter to be adjustable, when the bentonite tends to be extruded upwards under pressure, the sealing cap can slide upwards, providing additional space to accommodate the minor deformation of the bentonite. At the same time, the friction and resistance of the sealing cap itself limit excessive extrusion of the bentonite.
[0027] Example
[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the technical problems of significant differences in the extrusion characteristics and consolidation requirements of bentonite, the varying expansion volumes required for different bentonite volumes, the inflexibility of using a fixed-volume constraint frame, and the increased heterogeneity of the foundation soil if the bentonite injected into the foundation is extruded outwards. The overall approach is as follows:
[0029] To address the problems existing in the prior art, this utility model provides a bentonite anti-extrusion consolidation device, including a sealing cover 11, a ring cutter 12, and a base 13. A mating sleeve 19 is fixedly installed inside the sealing cover 11. Adjustment components are provided on the two inner side walls of the mating sleeve 19. Each adjustment component includes a pressure plate 21 and a rebound rod 22. The top end of the ring cutter 12 is slidably connected to the sealing cover 11. By pushing the pressure plate 21 to slide inside the mating sleeve 19, the pressure plate 21 slides into the sealing cover 11. The sliding of the pressure plate 21 stretches the top end of the rebound rod 22, while the side end of the pressure plate 21 moves away from the top end of the ring cutter 12. By pulling the sealing cap 11 at the side end of the connecting sleeve 19, the sealing cap 11 can slide on the top of the ring cutter 12, adjusting the space of the sealing cap 11 chamber inside the ring cutter 12. At the same time, by making the sealing cap 11 and the ring cutter 12 adjustable, when the bentonite tends to be squeezed upward under pressure, the sealing cap 11 can slide upward, providing additional space to accommodate the small deformation of the bentonite. Meanwhile, the friction and resistance of the sealing cap 11 itself limit the excessive extrusion of the bentonite. The sealing cap 11 and the ring cutter 12 can slide and adjust, which can change its constraint strength and range according to different geological conditions and engineering requirements.
[0030] A drainage groove is provided at the top of the base 13. An outer ring sleeve 14 for supporting connection is fixedly installed on the surface of the ring cutter 12. A constraint straight plate 16 for fixing the ring cutter 12 is fixedly installed on the side end of the outer ring sleeve 14. A fastening bolt is rotatably installed on the outer side of each constraint straight plate 16. At least two downward protruding positioning oblique cutters 15 are fixedly installed at the bottom end of the outer ring sleeve 14. The outer side of each positioning oblique cutter 15 is designed with an oblique surface. By moving the ring cutter 12, the bottom end of the ring cutter 12 is aligned with the base 13. The ring cutter 12 is placed with the cutting edge facing down on the original soil or artificially prepared disturbed soil. It is carefully pressed and cut until the entire soil sample enters the ring cutter 12 and protrudes from the ring cutter 12.
[0031] By rotating the fastening bolts on both sides of the constraint plate 16, the ring cutter 12 is fixed to the top of the base 13. At the same time, a positioning oblique cutter 15 is installed at the bottom of the outer ring sleeve 14. The positioning oblique cutter 15 is designed with an oblique surface. When the ring cutter 12 cuts the bentonite, it applies an oblique pushing force to the bentonite on the outside, making the cut more neat.
[0032] A threaded rod 17 for driving the pressure plate 21 is rotatably mounted on the top of the sealing cover 11. A shaft end rotating ring 18 for connection is rotatably mounted on the end of the threaded rod 17. Two retainers are mounted on the surface of the shaft end rotating ring 18. Two inclined support rods 23 are rotatably mounted on the surface of the shaft end rotating ring 18. By rotating the threaded rod 17, the threaded rod 17 rotates downward at the top of the sealing cover 11, causing the threaded rod 17 and the shaft end rotating ring 18 to move. At the same time, the shaft end rotating ring 18 and the threaded rod 17 are also rotatably connected. The threaded rod 17 only causes the shaft end rotating ring 18 to move vertically.
[0033] Each inclined support rod 23 rotates and mates with the groove at the side end of the pressure plate 21. A pressure sensor is installed inside the sealing cover 11, and a pressure mechanism is installed at the top of the sealing cover 11. The pressure mechanism includes a hydraulic rod and pipelines. By moving the shaft end rotating ring 18, the shaft end rotating ring 18 generates a thrust on one end of the inclined support rod 23. The inclined support rod 23 transmits the thrust to the pressure plate 21, allowing the pressure plate 21 to slide inside the mating sleeve layer 19 and squeeze the top of the spring rod 22. The spring rod 22 plays a buffering role. After the pressure plate 21 moves, it fits and squeezes against the side end of the ring cutter 12 to fix the ring cutter 12. Now the sealing cover 11 and the ring cutter 12 are in the same position.
[0034] Working principle:
[0035] The first step involves aligning the bottom of the ring cutter 12 with the base 13 by moving the ring cutter 12. The ring cutter 12 is then placed with its blade facing down on the undisturbed soil or artificially prepared disturbed soil. Careful pressure and cutting are applied until the entire soil sample enters and protrudes from the ring cutter 12. The ring cutter 12 is then fixed to the top of the base 13 by rotating the fastening bolts on both sides of the constraint plate 16. Simultaneously, a positioning bevel cutter 15 is installed at the bottom of the outer ring sleeve 14. This bevel cutter 15 has a sloping design, applying a sloping thrust to the outer bentonite when the ring cutter 12 cuts it, resulting in a cleaner cut. Water enters the drainage pipe through the drainage channel and then collects in the water collection tank. As the drainage channel continuously discharges water, the distance between the bentonite particles gradually decreases, increasing the effective stress and causing the bentonite to gradually solidify.
[0036] The second step involves rotating the threaded rod 17 downwards at the top of the sealing cover 11, causing the threaded rod 17 and the shaft end rotating ring 18 to move. Simultaneously, the shaft end rotating ring 18 and the threaded rod 17 are also rotatably connected. The threaded rod 17 only causes the shaft end rotating ring 18 to move vertically, pushing the pressure plate 21 to slide inside the mating sleeve layer 19. The pressure plate 21 slides into the sealing cover 11, and the sliding of the pressure plate 21 stretches the top of the springback rod 22. At the same time, the side end of the pressure plate 21 moves away from the side end of the mating sleeve layer 19, pulling the sealing cover... 11. Slide the sealing cap 11 on the top of the ring cutter 12 to adjust the space of the sealing cap 11 chamber inside the ring cutter 12. At the same time, by making the sealing cap 11 and the ring cutter 12 adjustable, when the bentonite tends to be squeezed upward under pressure, the sealing cap 11 can slide upward to provide additional space to accommodate the small deformation of the bentonite. Meanwhile, the friction and resistance of the sealing cap 11 itself limit the excessive extrusion of the bentonite. The sealing cap 11 and the ring cutter 12 can slide and adjust, and their constraint strength and range can be changed according to different geological conditions and engineering requirements.
[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A bentonite anti-extrusion consolidation device, comprising a sealing cap (11), a ring cutter (12), and a base (13), characterized in that, The sealing cover (11) is fixedly installed with a mating sleeve layer (19). The two inner sidewalls of the mating sleeve layer (19) are provided with adjustment components. Each adjustment component includes a pressure plate (21) and a spring rod (22). The top end of the ring cutter (12) is slidably connected to the sealing cover (11).
2. The bentonite anti-extrusion consolidation device as described in claim 1, characterized in that, The outer ring sleeve (14) for supporting the connection is fixedly installed on the surface of the ring cutter (12), and a constraint straight plate (16) for fixing the ring cutter (12) is fixedly installed on the side end of the outer ring sleeve (14).
3. The bentonite anti-extrusion consolidation device as described in claim 2, characterized in that, Each of the constrained straight plates (16) is rotatably mounted with a fastening bolt on its outer side, and at least two downward protruding positioning bevels (15) are fixedly mounted on the bottom end of the outer ring sleeve (14), with the outer side of each positioning bevel (15) being a bevel design.
4. The bentonite anti-extrusion consolidation device as described in claim 1, characterized in that, The top of the base (13) is provided with a drainage groove.
5. The bentonite anti-extrusion consolidation device as described in claim 1, characterized in that, The top of the sealing cover (11) is rotatably mounted with a threaded rod (17) for driving the pressure plate (21).
6. The bentonite anti-extrusion consolidation device as described in claim 5, characterized in that, The end of the threaded rod (17) is rotatably mounted with a shaft end rotating ring (18) for connection. Two retaining seats are mounted on the surface of the shaft end rotating ring (18), and two oblique support rods (23) are rotatably mounted on the surface of the shaft end rotating ring (18).
7. The bentonite anti-extrusion consolidation device as described in claim 6, characterized in that, Each of the inclined support rods (23) rotates by engaging with the groove at the side end of the pressure plate (21).
8. The bentonite anti-extrusion consolidation device as described in claim 1, characterized in that, A pressure sensor is installed inside the sealing cover (11), and a pressure mechanism is installed at the top of the sealing cover (11).