Reverse grouting device for drill hole
By designing a drilling counter grouting device, the hard baffle and soft baffle block the slurry into the bottom of the casing, solving the casing deformation problems caused by slurry blockage and drilling rig cleaning, and achieving safe and efficient drilling construction.
Patent Information
- Application Number
- CN202420254229.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-02
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-02-02
AI Technical Summary
In reverse grouting technology, the slurry is prone to clog the bottom of the casing and consolidate on the inner wall of the casing, which may damage the casing when the drilling rig is cleaned and cause deformation.
Design a drilling counter-grouting device, including casing, pipe clamp, hard baffle, soft baffle and circular plate, which is fixed by hot melt welding. The circular plate is at the outlet position of the lower end of the pipe clamp, hard baffle and soft The baffle blocks the slurry into the bottom of the casing to avoid cleaning of the drill.
Effectively block the slurry and seal the bottom of the casing, prevent the drilling rig from causing damage to the pipe wall, avoid casing deformation, and improve the safety and efficiency of drilling construction.
Smart Images
Figure CN222162529U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of in-situ leaching uranium drilling construction, in particular to a drilling reverse grouting device. Background Art
[0002] With the continuous development of scientific theory and practice, in-situ uranium leaching technology has also been continuously developed and matured, and has a matching theoretical system. In in-situ uranium leaching technology, drilling construction technology is one of the key links. The quality and efficiency of drilling construction technology directly affect the efficiency and safety of in-situ uranium leaching. Therefore, it is very necessary to continuously develop and improve drilling construction technology.
[0003] In terms of drilling construction technology, some new technologies and methods are constantly being developed and applied. For example, reverse grouting technology is a new drilling construction technology. The gap between the inner wall of the borehole and the casing can ensure the integrity and stability of the well pipe through reverse grouting technology. The currently used retrograde grouting technology is to extend the grouting pipe to the bottom of the casing and form a high-pressure area at the bottom of the borehole through the slurry to achieve the purpose of retrograde grouting, but part of the slurry will block the bottom of the casing and solidify on the inner wall of the casing. The solidified slurry needs to be cleaned with a drilling rig. The drilling rig may damage the casing during the cleaning process, causing casing deformation and other problems. Summary of the invention
[0004] The purpose of the present invention is to provide a drilling reverse grouting device, through which slurry can be directly injected into the gap between the inner wall of the borehole and the casing, and the slurry can be blocked from blocking the bottom of the casing, so that there is no need to use a drilling rig to process the slurry on the pipe wall. This design can effectively prevent the drilling rig from causing damage to the pipe wall.
[0005] The technical solution of the present invention is as follows: a drilling reverse grouting device includes a casing, the casing is located in the inner wall of the borehole, the casing is fixed to the pipe clamp, a hard baffle and a soft baffle are connected at the connection between the pipe clamp and the casing, and a circular plate is connected to the outlet position of the lower end of the pipe clamp.
[0006] The sleeve is fixed to the pipe clamp by threads.
[0007] The hard baffle and the soft baffle are welded at the connection between the upper end of the pipe clamp and the sleeve by hot-melt welding.
[0008] The circular plate is hot-melt welded to the outlet position of the lower end of the pipe clamp by a PVC welding rod.
[0009] The sleeve is made of PVC material, with external threads at the end, and the sleeve specifications are 148*10mm.
[0010] The pipe clamp is made of PVC material, has an internal thread on the upper end, and the specification of the pipe clamp is 166*18mm.
[0011] The hard baffle is made of PVC.
[0012] The soft baffle is made of rubber.
[0013] The round plate is made of PVC and has a diameter of 166mm.
[0014] The remarkable effect of the present invention is that: the example of the present application provides a drilling reverse grouting device, including a casing, a pipe clamp, a hard baffle, a circular plate and a soft baffle. The circular plate is fixed to the outlet position of the lower end of the pipe clamp by welding, and the hard baffle and the soft baffle are inserted into the connection position between the casing and the pipe clamp. When in use, the device is placed at the end of the casing and placed at the bottom of the borehole using a threaded connection. The slurry enters the middle of the casing and the well wall through the small holes on the casing. The hard baffle and the soft baffle block the slurry from filling the bottom of the borehole downward. By adopting the utility model, the slurry can be blocked from blocking the bottom of the casing, so that there is no need to use a drilling rig to process the slurry on the pipe wall. This design can effectively prevent the drilling rig from causing damage to the pipe wall, causing deformation of the casing in the borehole, and affecting normal use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 A front view of a drilling reverse grouting device provided by an embodiment of the utility model;
[0017] Figure 2 A top view of a drilling reverse grouting device provided in an embodiment of the utility model;
[0018] Figure 3 A cross-sectional view of the connection between the casing, the pipe clamp, the hard baffle and the soft baffle of the drilling reverse grouting device provided in the embodiment of the utility model;
[0019] Icons: 1-inner wall of borehole, 2-casing, 3-slurry outlet hole, 4-soft baffle, 5-hard baffle, 6-pipe clamp, 7-round plate, 8-PVC welding rod, 9-thread. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0023] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0024] Please refer to Figures 1 to 3 The embodiment of the present application provides a drilling reverse grouting device, including a casing 2, the casing 2 is located in the inner wall 1 of the borehole, the casing 2 is fixed to the pipe clamp 6 by a thread 9, the hard baffle 5 and the soft baffle 4 are welded at the connection between the upper end of the pipe clamp 6 and the casing 2 by hot melt welding, and the circular plate 7 is welded at the outlet position of the lower end of the pipe clamp 6 by a PVC welding rod 8. There are grout outlet holes 3 on the casing 2, 5 on each side, and the diameter is 20mm.
[0025] The sleeve 2 is made of PVC material, has an external thread at the end, and the sleeve specification is 148*10mm.
[0026] The pipe clamp 6 is made of PVC material, has an internal thread at the upper end, and the specification of the pipe clamp is 166*18mm.
[0027] The inner ring diameter of the hard baffle 5 and the soft baffle 4 is 148 mm.
[0028] The circular plate 7 is made of PVC and has a diameter of 166 mm.
[0029] The hard baffle 5 is made of PVC, and the soft baffle 4 is made of rubber
[0030] The above description is only a preferred embodiment of this patent and is not intended to limit this patent. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this patent should be included in the scope of protection of this patent.
[0031] It should be noted that, for the above-mentioned method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.
[0032] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0033] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The optional embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of the present application. The present application selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can understand and use the present application well.
Claims
1. A drilling reverse grouting device, characterized in that: The invention comprises a casing (2), wherein the casing (2) is located in the inner wall of a borehole (1), the casing (2) is fixed to a pipe clamp (6), a hard baffle (5) and a soft baffle (4) are connected at the connection between the pipe clamp (6) and the casing (2), and a circular plate (7) is connected to the outlet position at the lower end of the pipe clamp (6).
2. A drilling reverse grouting device according to claim 1, characterized in that: The sleeve (2) is fixed to the pipe clamp (6) via a thread (9).
3. A drilling reverse grouting device according to claim 1, characterized in that: The hard baffle (5) and the soft baffle (4) are welded at the connection between the upper end of the pipe hoop (6) and the sleeve (2) by hot-melt welding.
4. A drilling reverse grouting device according to claim 1, characterized in that: The circular plate (7) is heat-melted and welded to the outlet position of the lower end of the pipe hoop (6) by means of a PVC welding rod (8).
5. A drilling reverse grouting device according to claim 1, characterized in that: The sleeve (2) is made of PVC, has an external thread at the end, and has a sleeve specification of 148*10mm.
6. A drilling reverse grouting device according to claim 1, characterized in that: The pipe clamp (6) is made of PVC material, has an internal thread at the upper end, and has a specification of 166*18mm.
7. A drilling reverse grouting device according to claim 1, characterized in that: The hard baffle (5) is made of PVC material.
8. A drilling reverse grouting device according to claim 1, characterized in that: The soft baffle (4) is made of rubber.
9. A drilling reverse grouting device according to claim 1, characterized in that: The circular plate (7) is made of PVC and has a diameter of 166 mm.