Curtain grouting drill rod anti-clogging structure

Abstract

This utility model relates to the field of curtain grouting technology and discloses a curtain grouting drill rod anti-clogging structure, including a hollow drill rod. A liquid outlet pipe is fixedly connected to the bottom end of the hollow drill rod, a pressure sensor is installed at the front end of the hollow drill rod, and a slidable unblocking plate is slidably connected inside the hollow drill rod. Several unblocking grooves are formed on the surface of the unblocking plate, and a connecting rod is fixedly connected to the top end of the unblocking plate. In this curtain grouting drill rod anti-clogging structure, when the hollow drill rod is in use, the pressure sensor is activated, and the pressure sensor detects the internal cement pressure in real time. When the internal cement causes a blockage, increasing the pressure detected by the pressure sensor, the connecting rod is pulled, causing the unblocking plate to move up and down inside the hollow drill rod, thus clearing the cement blockage inside the hollow drill rod and achieving rapid unblocking when blockage occurs, preventing inconvenience caused by blockage during use.

Description

Technical Field

[0001] This utility model relates to the field of curtain grouting technology, and in particular to a curtain grouting drill rod anti-blocking structure. Background Technology

[0002] Curtain grouting is an engineering measure that involves drilling holes in the foundation or surrounding rock of hydraulic structures such as dams and tunnels at specific hole and row spacings. Cement grout or other chemical grout is then injected into the holes through grouting equipment, allowing the grout to diffuse and fill the rock fissures, forming a continuous water-blocking curtain with a certain thickness and impermeability. This reduces the seepage pressure of the dam foundation, decreases the amount of seepage, and prevents seepage damage to the dam foundation. During curtain grouting construction, the curtain grouting drill rod is a key component of the drilling process.

[0003] In current construction processes, when using traditional curtain grouting drill rods, if the grouting pressure is too low, the grout cannot form a sufficient flow velocity inside the drill rod, and it is easy for it to stagnate and settle inside the drill rod. On the other hand, if the pressure is too high, it may damage the seal at the connection of the drill rod, causing the grout to leak to the outside of the drill rod. It may also cause the grout flow inside the drill rod to become turbulent, increasing the risk of blockage. Blockage will cause the grouting work to be suspended, affecting work efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing technology has the disadvantage that the drill rod is prone to blockage. To address this, we propose a curtain grouting drill rod anti-blockage structure.

[0005] To achieve the above objectives, this application adopts the following technical solution: a curtain grouting drill rod anti-clogging structure, including a hollow drill rod, a liquid outlet pipe fixedly connected to the bottom end of the hollow drill rod, a pressure sensor installed at the front end of the hollow drill rod, a slidably connected unblocking plate inside the hollow drill rod, a plurality of unblocking grooves opened on the surface of the unblocking plate, a connecting rod fixedly connected to the top end of the unblocking plate, and a first fixing ring fixedly connected inside the hollow drill rod, the top end of the first fixing ring abutting against the bottom end of the unblocking plate.

[0006] Preferably, guide grooves are provided on both sides of the interior of the hollow drill rod, and guide blocks are fixedly connected to both sides of the unblocking plate, with the interior of the guide grooves slidably connected to the guide blocks.

[0007] Preferably, the hollow drill rod has a spiral groove inside.

[0008] Preferably, a second fixing ring is fixedly connected inside the liquid outlet pipe, and a limiting plate is rotatably connected inside the liquid outlet pipe via a rotating shaft, with the bottom end of the limiting plate abutting against the bottom end of the second fixing ring.

[0009] Preferably, a sealing gasket is installed at the top of the limiting plate.

[0010] Preferably, the interior of the hollow drill rod is coated with an epoxy ceramic coating.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] In this invention, when the hollow drill rod is in use, the pressure sensor is activated. The pressure sensor will detect the pressure of the cement inside in real time. When the cement inside becomes blocked, causing the pressure detected by the pressure sensor to increase, the connecting rod is pulled to drive the unblocking plate to move up and down inside the hollow drill rod, thereby clearing the cement blockage inside the hollow drill rod and achieving rapid unblocking when blockage occurs inside the hollow drill rod, preventing inconvenience caused by blockage during use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of the grouting drill rod of this utility model;

[0014] Figure 2 This is a first cross-sectional schematic diagram of the internal structure of the grouting drill rod of this utility model;

[0015] Figure 3 This is a second cross-sectional schematic diagram of the internal structure of the grouting drill rod of this utility model;

[0016] Figure 4 This is a schematic cross-sectional view of the guide structure of the unblocking plate of this utility model;

[0017] Figure 5 This is a cross-sectional schematic diagram of the anti-backflow structure of this utility model.

[0018] Legend: 1. Hollow drill rod; 2. Liquid outlet pipe; 3. Pressure sensor; 4. Unclogging plate; 5. Unclogging groove; 6. Connecting rod; 7. First fixing ring; 8. Guide groove; 9. Guide block; 10. Spiral groove; 11. Second fixing ring; 12. Limiting plate; 13. Sealing gasket. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0020] Reference Figure 1 - Figure 4As shown, this utility model provides a technical solution: a curtain grouting drill rod anti-clogging structure, including a hollow drill rod 1, a liquid outlet pipe 2 fixedly connected to the bottom end of the hollow drill rod 1, a pressure sensor 3 installed at the front end of the hollow drill rod 1, a slidable unblocking plate 4 slidably connected inside the hollow drill rod 1, a plurality of unblocking grooves 5 opened on the surface of the unblocking plate 4, a connecting rod 6 fixedly connected to the top end of the unblocking plate 4, and a first fixing ring 7 fixedly connected inside the hollow drill rod 1, the top end of the first fixing ring 7 abutting against the bottom end of the unblocking plate 4. When the hollow drill rod 1 is in use, the pressure sensor 3 is activated, and the pressure sensor 3 will detect the pressure of the cement inside in real time. When the cement inside causes blockage and the pressure detected by the pressure sensor 3 increases, the connecting rod 6 is pulled to drive the unblocking plate 4 to move up and down inside the hollow drill rod 1, so as to dissolve the cement blockage inside the hollow drill rod 1, achieve rapid unblocking when the hollow drill rod 1 is blocked, and prevent the blockage from causing inconvenience during use.

[0021] Reference Figure 4 As shown in this embodiment: guide grooves 8 are provided on both sides of the hollow drill rod 1, and guide blocks 9 are fixedly connected to both sides of the unblocking plate 4. The inside of the guide groove 8 is slidably connected to the guide block 9. Through the setting of the guide groove 8 and the guide block 9, the unblocking plate 4 can form a stable guiding effect when moving inside the hollow drill rod 1, which can effectively prevent the deviation caused by the sliding of the unblocking plate 4 and ensure the stability when unblocking.

[0022] Reference Figure 3 As shown in this embodiment: a spiral groove 10 is provided inside the hollow drill rod 1. By providing a spiral groove 10 inside the hollow drill rod 1, the cement slurry can be made to flow in a spiral shape inside the hollow drill rod 1, forming a swirling effect. This swirling effect can make the particle distribution in the cement slurry more uniform, reduce the mutual aggregation and sedimentation between particles, thereby reducing the possibility of blockage caused by particle agglomeration.

[0023] Reference Figure 5 As shown in this embodiment: a second fixing ring 11 is fixedly connected inside the outlet pipe 2, and a limiting plate 12 is rotatably connected inside the outlet pipe 2 via a rotating shaft. The bottom end of the limiting plate 12 abuts against the bottom end of the second fixing ring 11. By setting the limiting plate 12, when the hollow drill rod 1 is not grouted, the limiting plate 12 can prevent soil, waste residue, etc. from entering the hollow drill rod 1 through the outlet pipe 2 and causing blockage. When grouting, the grout pushes the rotatable limiting plate 12 so that it can flow out normally.

[0024] Reference Figure 5 As shown in this embodiment, a sealing gasket 13 is installed at the top of the limiting plate 12. By setting the sealing gasket 13, the sealing performance of the limiting plate 12 during use can be effectively guaranteed, thereby ensuring the stable implementation of the anti-blocking function.

[0025] Reference Figure 2 As shown in this embodiment, the interior of the hollow drill rod 1 is coated with an epoxy ceramic coating. By setting an epoxy ceramic coating inside the hollow drill rod 1, not only can cement adhesion be prevented, but the wear resistance and erosion resistance of the drill rod can also be improved, thus extending the service life of the drill rod.

[0026] Working Principle: When the hollow drill rod 1 is in use, the pressure sensor 3 is activated. The pressure sensor 3 will detect the pressure of the cement inside in real time. When the cement inside becomes blocked, increasing the pressure detected by the pressure sensor 3, the connecting rod 6 is pulled, causing the unblocking plate 4 to move up and down inside the hollow drill rod 1. This unblocks the cement inside the hollow drill rod 1, achieving rapid unblocking and preventing inconvenience caused by blockage. The guide groove 8 and guide block 9 provide a stable guide for the unblocking plate 4 as it moves inside the hollow drill rod 1, effectively preventing deviation caused by sliding and ensuring stability during unblocking. The spiral groove 10 inside the hollow drill rod 1 allows the cement slurry to flow smoothly within the hollow drill rod 1. The internal spiral flow creates a swirling effect, which makes the particle distribution in the cement slurry more uniform, reduces the mutual aggregation and sedimentation between particles, and thus reduces the possibility of blockage caused by particle agglomeration. With the setting of the limiting plate 12, when the hollow drill rod 1 is not grouting, the limiting plate 12 can prevent soil, waste residue and other materials from entering the hollow drill rod 1 through the liquid outlet pipe 2 and causing blockage. When grouting, the slurry pushes the rotatable limiting plate 12 so that it can flow out normally. With the setting of the sealing gasket 13, the sealing performance of the limiting plate 12 can be effectively guaranteed during use, thereby ensuring the stable implementation of the anti-blocking function. By setting an epoxy ceramic coating inside the hollow drill rod 1, not only can cement adhesion be prevented, but the wear resistance and erosion resistance of the drill rod can also be improved, extending the service life of the drill rod.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Curtain grouting drill pipe anti-blocking structure, comprising a hollow drill pipe (1), characterized in that: The bottom end of the hollow drill rod (1) is fixedly connected to a liquid outlet pipe (2), the front end of the hollow drill rod (1) is equipped with a pressure sensor (3), the inside of the hollow drill rod (1) is slidably connected to a dredging plate (4), the surface of the dredging plate (4) is provided with several dredging grooves (5), the top end of the dredging plate (4) is fixedly connected to a connecting rod (6), the inside of the hollow drill rod (1) is fixedly connected to a first fixing ring (7), the top end of the first fixing ring (7) is in contact with the bottom end of the dredging plate (4).

2. The curtain grouting drill rod anti-blocking structure according to claim 1, characterized in that: The hollow drill rod (1) has guide grooves (8) on both sides inside, and guide blocks (9) are fixedly connected to both sides of the unblocking plate (4). The inside of the guide groove (8) is slidably connected to the guide block (9).

3. The anti-clogging structure for curtain grouting drill rods according to claim 1, characterized in that: The hollow drill rod (1) has a spiral groove (10) inside.

4. The anti-clogging structure for curtain grouting drill rods according to claim 1, characterized in that: The inside of the liquid outlet pipe (2) is fixedly connected to a second fixing ring (11), and the inside of the liquid outlet pipe (2) is rotatably connected to a limiting plate (12) via a rotating shaft. The bottom end of the limiting plate (12) abuts against the bottom end of the second fixing ring (11).

5. The anti-clogging structure for curtain grouting drill rods according to claim 4, characterized in that: A sealing gasket (13) is installed at the top of the limiting plate (12).

6. The anti-clogging structure for curtain grouting drill rods according to claim 1, characterized in that: The hollow drill rod (1) is coated with an epoxy ceramic coating.

Images