High-low pressure fluid channel assembly

Abstract

The utility model discloses a high-low pressure fluid channel component, which comprises an outer pipe, an inner pipe arranged in the outer pipe and a blocking plug, an anchoring agent is arranged in the inner pipe, a low pressure fluid path is formed between the outer pipe and the inner pipe, the blocking plug is arranged in the outer pipe, a first end of the blocking plug is fixed with the outer pipe, and a second end of the blocking plug is fixed with the inner pipe. A plurality of liquid inlet channels are formed in the first end of the blocking plug in the axial direction, an axial hole and a plurality of radial holes which are communicated with the liquid inlet channels are formed in the second end of the blocking plug, the axial hole is communicated with the interior of the inner pipe, and the radial holes are communicated with the low-pressure liquid path; and when the low-pressure liquid path is cut off, the hydraulic pressure of the low-pressure liquid path and the inner pipe rises and pushes the anchoring agent in the inner pipe. The blocking plug and the piston are arranged, so that a large amount of low-pressure water can be prevented from entering the inner pipe to push an anchoring agent when the anchor rod is not in place during drilling of the anchor rod; and meanwhile, the anchoring agent can be prevented from being damaged by chippings and disintegrating slag entering the tail part before the anchor rod is used.

Description

Technical Field

[0001] This utility model relates to the field of anchoring device technology, and in particular to a high and low pressure fluid channel assembly. Background Technology

[0002] The patent with publication number CN118793402A provides a friction-reversing fluid channel switching device and an anchor bolt including the device, which is used to solve the problem of difficult feeding of resin cartridges into mining anchor bolts.

[0003] In actual use, it has the following shortcomings: the tail end of the anchor rod is directly connected to the water source, which may cause the cooling water to enter the water inlet pipe in an excessive amount, causing the resin to be squeezed out prematurely. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a high-low pressure fluid channel assembly.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A high-low pressure fluid channel assembly includes an outer tube, an inner tube disposed inside the outer tube, and a stopper. An anchoring agent is disposed inside the inner tube. A low-pressure fluid passage is formed between the outer tube and the inner tube. The stopper is disposed inside the outer tube. A first end of the stopper is fixed to the outer tube and has multiple inlet channels along the axial direction. A second end of the stopper has an axial hole communicating with the inlet channels and multiple radial holes. The axial hole communicates with the interior of the inner tube, and the radial holes communicate with the low-pressure fluid passage.

[0007] When the low-pressure fluid circuit is cut off, the low-pressure fluid circuit and the inner tube are hydraulically raised and push the anchoring agent of the inner tube.

[0008] Furthermore, a piston is also provided inside the inner tube, and the piston is disposed between the anchoring agent and the stopper.

[0009] Furthermore, the outer tube is a hollow anchor rod.

[0010] Furthermore, the first end of the stopper is provided with an external thread, and the stopper is threadedly connected to the outer tube.

[0011] Furthermore, the piston has a cylindrical structure, and at least one sealing ring is provided on the cylindrical surface of the piston.

[0012] Furthermore, the end of the stopper near the inner tube is provided with an annular positioning plate, the outer diameter of which is larger than the diameter of the inner tube.

[0013] Furthermore, the cross-section of the liquid inlet channel is waist-shaped.

[0014] Furthermore, four inlet channels and radial holes are provided.

[0015] Furthermore, the axial hole is connected to the liquid inlet channel through a connecting hole.

[0016] The beneficial effects of this utility model are:

[0017] This invention, by setting a stopper and a piston, can prevent a large amount of low-pressure water from entering the inner tube during anchor drilling and pushing the anchoring agent before the anchor is in place; at the same time, it can prevent debris and slag from entering the tail of the anchor before use and damaging the anchoring agent. Attached Figure Description

[0018] Figure 1 This is a perspective view of the high and low pressure fluid channel assembly in an embodiment of this utility model;

[0019] Figure 2 A front view of the high and low pressure fluid channel assembly;

[0020] Figure 3 for Figure 2 Sectional view along line AA;

[0021] Figure 4 for Figure 4 for Figure 3 Enlarged view of point B in the middle section;

[0022] Figure 5 Three-dimensional for blocking Figure 1 ;

[0023] Figure 6 Three-dimensional for blocking Figure 2 ;

[0024] In the diagram, 1 is the outer tube; 2 is the inner tube; 3 is the stopper; 4 is the anchoring agent; 5 is the low-pressure fluid passage; 6 is the inlet channel; 7 is the axial hole; 8 is the radial hole; 9 is the piston; and 10 is the positioning plate. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] See Figures 1-6 This utility model provides a technical solution:

[0027] Example:

[0028] like Figures 1-6As shown, a high-low pressure fluid channel assembly includes an outer tube 1 (the outer tube 1 is a hollow anchor rod), an inner tube 2 disposed inside the outer tube 1, and a stopper 3. An anchoring agent 4 is disposed inside the inner tube 2. A low-pressure fluid passage 5 is formed between the outer tube 1 and the inner tube 2. The stopper 3 is threadedly connected to the outer tube 1. The first end of the stopper 3 is fixed to the outer tube 1, and the first end of the stopper 3 is provided with four waist-shaped fluid inlet channels 6 along the axial direction. The second end of the stopper 3 is provided with an axial hole 7 communicating with the fluid inlet channels 6 and four radial holes 8. The axial hole 7 communicates with the interior of the inner tube 2, and the radial holes 8 communicate with the low-pressure fluid passage 5.

[0029] When the low-pressure hydraulic circuit 5 is cut off, the low-pressure hydraulic circuit 5 and the inner tube 2 are hydraulically raised and push the anchoring agent 4 of the inner tube 2.

[0030] like Figure 3 and Figure 4 As shown, the inner tube 2 is also provided with a cylindrical piston 9, which is located between the anchoring agent 4 and the stopper 3. At least one sealing ring is provided on the cylindrical surface of the piston 9.

[0031] The end of the stopper 3 near the inner tube 2 is provided with an annular positioning plate 10, the outer diameter of which is larger than the diameter of the inner tube 2.

[0032] The axial hole 7 is connected to the liquid inlet channel 6 through a connecting hole.

[0033] This high and low pressure fluid channel assembly is used in conjunction with a fluid channel switching assembly. The fluid channel switching assembly can be, but is not limited to, the fluid channel switching assembly in the patent with publication number CN118793402A.

[0034] Working principle: During drilling, cooling water is introduced through the drill rig / tip, and the cooling water enters the baffle 3 from the tail end of the outer pipe 1. The flow path of the cooling water is as follows: through the liquid inlet channel 6 of the baffle 3, through the radial hole 8 into the low-pressure liquid passage 5, and finally through the liquid outlet of the drill bit into the anchor hole to cool the drill bit and remove drill cuttings.

[0035] When the borehole is in place, the fluid channel switching component moves, thereby cutting off the low-pressure fluid path 5 (the low-pressure fluid path 5 is no longer connected to the borehole). Due to the cutting off of the low-pressure fluid path 5, the cooling water enters the inner tube 2 through the inlet channel 6 of the stopper 3 and the axial hole 7, causing the hydraulic pressure inside the inner tube 2 to rise. When the hydraulic pressure rises to a level greater than that of the piston 9 and the frictional resistance between the anchoring agent 4 and the inner tube 2, the increased pressure of the cooling water pushes the piston 9, and the piston 9 pushes the anchoring agent 4 to move along the direction of the drill bit until the anchoring agent 4 is completely squeezed out into the anchor hole.

[0036] This invention, by setting a stopper and a piston, can prevent a large amount of low-pressure water from entering the inner tube during anchor drilling and pushing the anchoring agent before the anchor is in place; at the same time, it can prevent debris and slag from entering the tail of the anchor before use and damaging the anchoring agent.

[0037] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A high and low pressure fluid passage assembly characterized by: The device includes an outer tube, an inner tube disposed inside the outer tube, and a stopper. An anchoring agent is disposed inside the inner tube. A low-pressure liquid passage is formed between the outer tube and the inner tube. The stopper is disposed inside the outer tube. The first end of the stopper is fixed to the outer tube and has multiple liquid inlet channels along the axial direction. The second end of the stopper has an axial hole and multiple radial holes that communicate with the liquid inlet channels. The axial hole communicates with the inside of the inner tube, and the radial holes communicate with the low-pressure liquid passage. When the low-pressure fluid circuit is cut off, the low-pressure fluid circuit and the inner tube are hydraulically raised and push the anchoring agent of the inner tube.

2. The high and low pressure fluid passage assembly of claim 1, wherein: The inner tube is also equipped with a piston, which is positioned between the anchoring agent and the stopper.

3. The high and low pressure fluid passage assembly of claim 1, wherein: The outer tube is a hollow anchor rod.

4. The high and low pressure fluid passage assembly of claim 3, wherein: The first end of the stopper is provided with an external thread, and the stopper is threadedly connected to the outer tube.

5. The high and low pressure fluid passage assembly of claim 2, wherein: The piston has a cylindrical structure, and at least one sealing ring is provided on the cylindrical surface of the piston.

6. The high and low pressure fluid passage assembly of claim 1, wherein: The end of the stopper near the inner tube is provided with an annular positioning plate, the outer diameter of which is larger than the diameter of the inner tube.

7. The high and low pressure fluid passage assembly of claim 1, wherein: The inlet channel has an oblong cross-section.

8. The high and low pressure fluid passage assembly of claim 7, wherein: Four inlet channels and radial holes are provided.

9. The high and low pressure fluid passage assembly according to claim 1 or 7, wherein: The axial hole is connected to the liquid inlet channel through a connecting hole.

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