Slurry liquid level control device capable of realizing positive and negative circulation
By installing floats and floating rods in the steel carrier, combined with the scheduled stroke probe and displacement sensor, the precise control of the mud liquid level in the steel cylinder is achieved, solving the problem of unstable liquid level, and ensuring the construction environment. Clean and stable support effect.
Patent Information
- Application Number
- CN202420217914.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-01-29
AI Technical Summary
During the pile foundation drilling process, the mud level in the steel casing is unstable, resulting in a reduction in support effect or mud overflow, causing pollution to the construction environment, and it is difficult to accurately regulate the existing liquid level devices.
Design a mud level control device that includes a float ball and a float rod. The float ball is suspended in the upper layer of mud inside the steel casing. The upper end of the float rod is equipped with spaced stroke probes. Through the displacement sensor and the forward and reverse circulation mud pump control module, connection to achieve precise control of liquid level.
By monitoring the height of the floating ball and the itinerary probe, the mud liquid level is accurately controlled to prevent the liquid level from being too high or too low to ensure the stable support in the steel barrel and the cleaning of the construction environment.
Smart Images
Figure CN222391364U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mud control in a steel casing, in particular to a mud level control device capable of positive and reverse circulation. Background Art
[0002] During the pile foundation drilling process, a steel casing needs to be installed in the upper hole after drilling to support the inner wall of the upper hole, and then a drilling rig is used to continue drilling downward.
[0003] During the drilling process, a large amount of mud will be generated, resulting in an unstable mud level in the steel casing. When the mud level in the steel casing is too low, the supporting effect is reduced, which can easily cause deformation of the inner wall of the steel casing. If the mud level is too high, it will cause mud overflow and pollute the construction environment.
[0004] However, the existing liquid level device is difficult to install in the steel casing, and it is difficult to accurately control the liquid level of the internal mud. Utility Model Content
[0005] The purpose of the utility model is to provide a mud level control device capable of positive and negative circulation, so as to solve the problems raised in the above background technology.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A mud level control device capable of forward and reverse circulation, the mud level control device comprising:
[0008] A float, the float is installed in the inner cavity of the steel casing, the float is suspended in the upper layer of the mud of the steel casing, the upper end of the float is provided with a float rod extending to the outside of the steel casing, and the upper end outer wall of the float rod is provided with a pair of travel probes distributed at intervals;
[0009] An upper fixing frame is fixed on the upper end port of the steel casing, and a displacement sensor located between adjacent stroke probes is arranged on the upper fixing frame. The inner cavity of the steel casing is externally connected to a forward and reverse circulation mud pump, and the displacement sensor is electrically connected to a control module of the forward and reverse circulation mud pump.
[0010] Preferably, an outer plate is provided on the outer side of the lower end of the upper fixing frame, and the outer plate is located on the outer side of the steel casing. An inner lining plate is provided on the lower end of the upper fixing frame and is located on the inner side of the steel casing, and the inner lining plate fits the arc inner wall of the steel casing.
[0011] Preferably, a sliding clamp is slidably mounted on the lower end of the upper fixing frame, the sliding clamp fits the arc outer wall of the steel casing, and an extrusion bolt is transversely threadedly mounted on the outer plate, and the extrusion bolt is pressed onto the sliding clamp.
[0012] Preferably, a slide groove is transversely arranged at the lower end of the upper fixing frame, and the upper end of the sliding clamp is slidably installed in the slide groove.
[0013] Preferably, a stud is provided at the upper end of the upper fixing frame, an upper sleeve is threadedly fixed on the stud, the displacement sensor is fixed at the upper end of the upper sleeve, a limiting hole is provided on the stud extending upward and downward, and the float rod slides along the limiting hole to pass through the upper fixing frame and the upper sleeve.
[0014] Preferably, a telescopic rod is provided at the lower end of the upper fixing frame, the telescopic rod is located on the inner side of the steel casing, and a limiting plate sleeved on the floating rod is provided at the lower end of the telescopic rod.
[0015] Preferably, the inner diameters of the limiting hole and the sleeve hole on the limiting plate are both larger than the outer diameter of the floating rod.
[0016] Compared with the prior art, the beneficial effects of the utility model are:
[0017] The utility model achieves the purpose of monitoring the mud liquid level in the steel casing by arranging the cooperation of a float ball and a float rod, and utilizes stroke probes distributed at intervals up and down as the control amplitude range of the mud liquid level. When the lower end stroke probe and the displacement sensor are highly coincident, it indicates that the liquid level is too high. At this time, a signal is transmitted to make the forward and reverse circulation mud pump extract the mud. When the upper end stroke probe and the displacement sensor are highly coincident, it indicates that the liquid level is too low. At this time, a signal is transmitted to make the forward and reverse circulation mud pump inject the mud, thereby achieving the purpose of accurately controlling the mud liquid level. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the utility model;
[0019] Figure 2 It is a three-dimensional structural schematic diagram of the liquid level control device of the utility model;
[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper fixing frame of the utility model;
[0021] Figure 4 for Figure 1 A magnified view of the structure in the middle.
[0022] In the figure: 1. Steel casing; 2. Float; 3. Upper fixing frame; 4. Telescopic rod; 5. Upper casing; 6. Limit plate; 7. Float rod; 8. Inner lining plate; 9. Travel probe; 10. Displacement sensor; 11. Sliding clamp; 12. Extrusion bolt; 13. Outer plate; 14. Stud; 15. Limit hole; 16. Slide groove. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figures 1 to 4 , the utility model provides a technical solution:
[0025] Embodiment 1: A mud level control device capable of forward and reverse circulation, the mud level control device comprising a float 2 and an upper fixing frame 3.
[0026] The float ball 2 is installed in the inner cavity of the steel casing 1, and the float ball 2 is suspended in the upper layer of the mud of the steel casing 1. The upper end of the float ball 2 is provided with a float rod 7 extending to the outside of the steel casing 1, and the upper end outer wall of the float rod 7 is provided with a pair of spaced travel probes 9.
[0027] The cooperation of the float ball 2 and the float rod 7 can clearly reflect the height of the mud level in the steel casing 1. By setting a pair of stroke probes 9 spaced apart from each other, the height between the upper and lower stroke probes 9 is used as the floating range of the mud level.
[0028] The upper fixing frame 3 is fixed to the upper end port of the steel casing 1. A displacement sensor 10 located between adjacent stroke probes 9 is arranged on the upper fixing frame 3. The inner cavity of the steel casing 1 is externally connected to a forward and reverse circulation mud pump. The displacement sensor 10 is electrically connected to a control module of the forward and reverse circulation mud pump.
[0029] As drilling continues, when the lower stroke probe 9 and the displacement sensor 10 are highly overlapped, it means that the liquid level is too high. At this time, a signal is transmitted to make the forward and reverse circulation mud pump pump out the mud. When the upper stroke probe 9 and the displacement sensor 10 are highly overlapped, it means that the liquid level is too low. At this time, a signal is transmitted to make the forward and reverse circulation mud pump inject mud, thereby achieving the purpose of accurately controlling the mud level.
[0030] Embodiment 2: On the basis of embodiment 1, an outer plate 13 is provided on the outer side of the lower end of the upper fixing frame 3, and the outer plate 13 is located on the outer side of the steel casing 1. An inner lining plate 8 is provided on the lower end of the upper fixing frame 3 and is located on the inner side of the steel casing 1. The inner lining plate 8 fits the arc inner wall of the steel casing 1. A sliding clamp 11 is slidably installed on the lower end of the upper fixing frame 3. The sliding clamp 11 fits the arc outer wall of the steel casing 1. An extrusion bolt 12 is transversely threadedly installed on the outer plate 13, and the extrusion bolt 12 is pressed on the sliding clamp 11. A slide groove 16 is transversely provided on the lower end of the upper fixing frame 3, and the upper end of the sliding clamp 11 is slidably installed in the slide groove 16.
[0031] By lateral squeezing of the squeezing bolt 12 , the sliding clamp 11 slides in the sliding groove 16 and is tightly pressed onto the outer side wall of the upper end of the steel casing 1 , thereby achieving the purpose of fastening and installing the upper fixing frame 3 .
[0032] Embodiment 3: On the basis of Embodiment 2, a stud 14 is provided at the upper end of the upper fixing frame 3, an upper sleeve 5 is threadedly fixed on the stud 14, a displacement sensor 10 is fixed at the upper end of the upper sleeve 5, a limit hole 15 is provided on the stud 14 which passes through the upper and lower parts, the float rod 7 slides along the limit hole 15 and passes through the upper fixing frame 3 and the upper sleeve 5, a telescopic rod 4 is provided at the lower end of the upper fixing frame 3, the telescopic rod 4 is located on the inner side of the steel casing 1, a limit plate 6 which is sleeved on the float rod 7 is provided at the lower end of the telescopic rod 4, and the inner diameters of the limit hole 15 and the sleeve holes on the limit plate 6 are both larger than the outer diameter of the float rod 7.
[0033] By setting the limit hole 15 and the limit plate 6, the position of the float rod 7 is limited to prevent the float rod 7 from shifting and shaking during the drilling, pumping and grouting processes, thereby ensuring stable liquid level measurement. The height of the limit plate 6 is adjusted by using the telescopic rod 4, thereby adjusting the support height of the float rod 7 to adapt to the stable support of the float rod 7 under different liquid levels.
[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A mud level control device capable of forward and reverse circulation, characterized in that: The mud level control device comprises: A float (2), the float (2) being installed in the inner cavity of the steel casing (1), the float (2) being suspended in the upper layer of the mud of the steel casing (1), the upper end of the float (2) being provided with a float rod (7) extending to the outside of the steel casing (1), the upper end outer wall of the float rod (7) being provided with a pair of travel probes (9) distributed at intervals; An upper fixing frame (3) is fixed to the upper end port of the steel casing (1), and a displacement sensor (10) is arranged on the upper fixing frame (3) and is located between adjacent stroke probes (9). The inner cavity of the steel casing (1) is externally connected to a forward and reverse circulation mud pump, and the displacement sensor (10) is electrically connected to a control module of the forward and reverse circulation mud pump.
2. A mud level control device capable of forward and reverse circulation according to claim 1, characterized in that: An outer plate (13) is arranged on the outer side of the lower end of the upper fixing frame (3), and the outer plate (13) is located on the outer side of the steel casing (1). An inner lining plate (8) is arranged on the lower end of the upper fixing frame (3) and is located on the inner side of the steel casing (1), and the inner lining plate (8) fits the arc inner wall of the steel casing (1).
3. A mud level control device capable of forward and reverse circulation according to claim 2, characterized in that: A sliding clamp (11) is slidably mounted on the lower end of the upper fixing frame (3), and the sliding clamp (11) fits the arc outer wall of the steel casing (1). A squeezing bolt (12) is transversely threadedly mounted on the outer plate (13), and the squeezing bolt (12) is pressed onto the sliding clamp (11).
4. A mud level control device capable of forward and reverse circulation according to claim 3, characterized in that: A slide groove (16) is transversely arranged at the lower end of the upper fixing frame (3), and the upper end of the sliding clamping plate (11) is slidably installed in the slide groove (16).
5. A mud level control device capable of forward and reverse circulation according to claim 1, characterized in that: A stud (14) is provided at the upper end of the upper fixing frame (3), an upper sleeve (5) is threadedly fixedly mounted on the stud (14), the displacement sensor (10) is fixed to the upper end of the upper sleeve (5), a limit hole (15) penetrating up and down is provided on the stud (14), and the floating rod (7) slides along the limit hole (15) to penetrate the upper fixing frame (3) and the upper sleeve (5).
6. A mud level control device capable of forward and reverse circulation according to claim 5, characterized in that: A telescopic rod (4) is arranged at the lower end of the upper fixing frame (3), and the telescopic rod (4) is located inside the steel casing (1). A limiting plate (6) sleeved on a floating rod (7) is arranged at the lower end of the telescopic rod (4).
7. A mud level control device capable of forward and reverse circulation according to claim 6, characterized in that: The inner diameters of the limiting hole (15) and the sleeve hole on the limiting plate (6) are both larger than the outer diameter of the floating rod (7).