High-pressure water injector for drilling of full-hydraulic underground drill rig

Abstract

The utility model relates to the technical field of hydraulic punching equipment, in particular to a high-pressure water injector for drilling of a full-hydraulic underground drill rig, which comprises a water injection joint. One end of the first hollow shaft is arranged in the shell in a sleeved mode, the other end of the first hollow shaft is connected with the water injection connector, the outer wall of the first hollow shaft is further sleeved with the end cover, four buckle holes are formed in the outer wall of the shell, and the end cover and the shell are connected in a buckled and matched mode through the buckle holes. A rotating bearing is arranged at the rear end of the shell, a connecting block is fixedly connected to the inner ring of the rotating bearing, and a fixing threaded column is arranged on the connecting block. According to the utility model, the rotating rod joint and the second hollow shaft are mounted in a threaded manner through the fixed threaded column, the fixed through hole and the threaded mounting hole, so that the rotating rod joint can be conveniently and quickly dismounted and maintained, all parts are tightly connected to form a stable integral structure, and pressure and vibration generated during high-pressure water injection can be borne.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of hydraulic hole flushing equipment, and particularly relates to a high-pressure water injector for full-hydraulic tunnel drilling rig drilling. BACKGROUND

[0002] In coal mining and underground mining of metal mines, tunnel drilling rig drilling is common, a large amount of dust is generated during drilling, the environment is polluted, health is harmed, and explosion is easily caused, coal and rock strata are easily stuck and caved in due to disturbance, and drilling efficiency and quality are affected, therefore, high-pressure water injection technology is applied to drilling operation, water injection can wet coal and rock strata to reduce dust, improve the environment, ensure safety, and also lubricate and cool drilling tools, reduce the strength of coal and rock strata, prevent sticking and caving, and improve drilling efficiency.

[0003] In high-pressure water injection operation, the connection parts (such as the shell and the hollow shaft, the connecting pipe, etc.) of some existing water injectors are prone to high-pressure water leakage due to simple sealing levels, the connection mode of the water injector parts may not be able to withstand the pressure and vibration generated during high-pressure water injection, leading to loose connection, affecting the normal operation of the equipment, and the disassembly and maintenance of some water injector parts may be relatively complex, increasing maintenance cost and time.

[0004] Therefore, the existing high-pressure water injector has the problems of unreasonable sealing structure design, leading to high-pressure water leakage and unstable connection, and complicated installation and maintenance. UTILITY MODEL CONTENTS

[0005] In order to overcome the problems of unreasonable sealing structure design, leading to high-pressure water leakage and unstable connection, and complicated installation and maintenance of the existing high-pressure water injector during use, a high-pressure water injector for full-hydraulic tunnel drilling rig drilling is proposed.

[0006] The technical scheme of the utility model is as follows: a high-pressure water injector for full-hydraulic tunnel drilling rig drilling, comprising a water injection connector, further comprising an end cover, a second hollow shaft and a rotating rod connector, one end of the first hollow shaft is sleeved in the shell, the other end of the first hollow shaft is connected with the water injection connector, the outer wall of the first hollow shaft is further sleeved with the end cover, the outer wall of the shell is provided with four buckle holes, the end cover and the shell are connected through the buckle hole, the rear end of the shell is provided with a rotating bearing, the inner ring of the rotating bearing is fixedly connected with a connecting block, the connecting block is provided with a fixed threaded column, the outer wall of the rotating rod connector is provided with a fixed perforation, the outer wall of the second hollow shaft is provided with four threaded mounting holes, the rotating rod connector and the second hollow shaft are threaded and mounted on the threaded mounting holes in sequence after passing through the fixed perforation and the connecting block, the front end of the second hollow shaft is fixedly connected with a connecting pipe, the front end of the connecting pipe is fixedly connected with an insertion ring, the rear end of the first hollow shaft is provided with a first insertion slot, the insertion ring and the first insertion slot are matched.

[0007] As preferred, a first O-shaped rubber ring is arranged at the joint between the water injection joint and the first hollow shaft, and the first O-shaped rubber ring is arranged in the recess formed at the rear end of the water injection joint.

[0008] As preferred, a first placing groove is formed at the rear end of the first hollow shaft, the outer wall of the insertion ring is sleeved with a rotary sealing Gleason ring, and the arc-shaped outer wall of the rotary sealing Gleason ring and the arc-shaped inner wall of the first placing groove are matched with each other.

[0009] As preferred, a first communication inner groove is formed at the rear end of the shell, the inner wall of the first communication inner groove and the outer wall of the second hollow shaft are matched with each other, a second communication inner groove is formed in the shell, the inner wall of the second communication inner groove and the outer wall of the connecting pipe are matched with each other, the outer wall of the connecting pipe is provided with a sealing bearing, and the sealing bearing and the inner wall of the second communication inner groove are tightly matched.

[0010] As preferred, a bearing placing groove is formed at the rear end of the shell, and the rotating bearing is rotatably arranged in the bearing placing groove, and the front end portion of the rotating lever joint and the rear end portion of the shell are matched with each other.

[0011] As preferred, a threaded connection sleeve is fixedly connected to the rear end of the rotating lever joint, an annular groove is formed in the outer wall of the rotating lever joint, and the outer wall of the second hollow shaft and the inner wall of the rotating lever joint are matched.

[0012] As preferred, a fixed ring is fixedly connected to the outer wall of the first hollow shaft, a second O-shaped rubber ring is sleeved at the rear end of the fixed ring, a cylindrical roller bearing is rotatably arranged in the fixed ring, and the fixed ring, the arc-shaped outer wall of the first hollow shaft and the inner wall of the third communication inner groove of the shell are matched.

[0013] The rotating lever joint and the second hollow shaft are connected through the threaded installation mode of the fixed threaded column, the fixed perforation and the threaded installation hole, the rotating lever joint can be quickly disassembled and maintained conveniently, the components are tightly connected, a stable overall structure is formed, and the pressure and vibration generated when high-pressure water injection is borne. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A three-dimensional structure schematic view of the utility model is shown;

[0015] Figure 2 A cross-sectional three-dimensional structure schematic view of the utility model is shown;

[0016] Figure 3 A cross-sectional three-dimensional structure schematic view of the internal components of the shell of the utility model is shown;

[0017] Figure 4 A cross-sectional three-dimensional structure schematic view of the first hollow shaft of the utility model is shown;

[0018] Figure 5The cross section three-dimensional structure schematic diagram of the rotating rod joint is shown.

[0019] The marks in the drawings are: 1, water injection joint; 101, first 0-shaped rubber ring; 2, first hollow shaft; 201, first insertion slot; 202, first placing slot; 203, fixing ring; 204, second 0-shaped rubber ring; 205, cylindrical roller bearing; 3, end cover; 4, shell; 401, first communication inner groove; 402, second communication inner groove; 403, third communication inner groove; 404, buckle hole; 405, bearing placing slot; 406, rotating bearing; 407, connecting block; 5, second hollow shaft; 501, threaded mounting hole; 502, connecting pipe; 503, sealing bearing; 504, insertion ring; 505, rotary sealing gasket; 6, rotating rod joint; 601, annular groove; 602, fixed perforation; 603, fixed threaded column; 604, threaded connection sleeve. DETAILED DESCRIPTION

[0020] The utility model is further explained below in combination with the drawings and examples.

[0021] Please refer to Figures 1-5 The utility model provides a kind of embodiment: a high-pressure water injector for drilling of full hydraulic tunnel drill rig, including water injection joint 1;Still including end cover 3, second hollow shaft 5 and rotating rod joint 6, one end of first hollow shaft 2 is set in shell 4, the other end of first hollow shaft 2 is connected with water injection joint 1, the outer wall of first hollow shaft 2 is also set with end cover 3, the outer wall of shell 4 is provided with four buckle holes 404, end cover 3 and shell 4 are connected by buckle hole 404 buckle cooperation, the rear end of shell 4 is provided with rotating bearing 406, the inner ring of rotating bearing 406 is fixedly connected with connecting block 407, connecting block 407 is provided with fixed threaded column 603, the outer wall of rotating rod joint 6 is provided with fixed perforation 602, the outer wall of second hollow shaft 5 is provided with four threaded mounting holes 501, rotating rod joint 6 and second hollow shaft 5 are sequentially passed fixed threaded column 603, fixed perforation 602 and connecting block 407 after threaded installation in threaded mounting hole 501, the front end of connecting pipe 502 is fixedly connected with insertion ring 504, the rear end of first hollow shaft 2 is provided with first insertion slot 201, insertion ring 504 and first insertion slot 201 are adapted, rotating rod joint 6 and second hollow shaft 5 are threaded by fixed threaded column 603, fixed perforation 602 and threaded mounting hole 501 The installation mode of threaded mounting can facilitate the quick disassembly maintenance work at rotating rod joint 6, and makes each component connection closely, forms stable overall structure, can produce pressure and vibration when being under high-pressure water injection.

[0022] Please refer to Figures 1-4In the embodiment, the first O-shaped rubber ring 101 is arranged at the joint of the water injection joint 1 and the first hollow shaft 2, the first O-shaped rubber ring 101 is placed in the recess at the rear end of the water injection joint 1, the rear end of the first hollow shaft 2 is provided with a first placing groove 202, the outer wall of the insertion ring 504 is sleeved with a rotary sealing Gleason ring 505, the arc-shaped outer wall of the rotary sealing Gleason ring 505 and the arc-shaped inner wall of the first placing groove 202 are matched with each other, the rear end of the shell 4 is provided with a first communication inner groove 401, the inner wall of the first communication inner groove 401 and the outer wall of the second hollow shaft 5 are matched with each other, the shell 4 is provided with a second communication inner groove 402, the inner wall of the second communication inner groove 402 and the outer wall of the connecting pipe 502 are matched with each other, the outer wall of the connecting pipe 502 is provided with a sealing bearing 503, the sealing bearing 503 and the inner wall of the second communication inner groove 402 are tightly matched, forming multiple sealing lines, in the high-pressure water injection process, water will try to leak from the joint of each part, the tight matching design can effectively prevent high-pressure water from leaking out of the gap between the shell 4 and the second hollow shaft 5 and the connecting pipe 502, ensure that the water injection system can maintain normal working pressure, ensure the smooth progress of the water injection operation, the rear end of the shell 4 is provided with a bearing placing groove 405, the rotating bearing 406 is rotatably arranged in the bearing placing groove 405, the front end of the rotating lever joint 6 and the rear end of the shell 4 are matched with each other.

[0023] Please refer to Figures 3-5 In the embodiment, the rear end of the rotating lever joint 6 is fixedly connected with a threaded connecting sleeve 604, the outer wall of the rotating lever joint 6 is provided with an annular groove 601, the outer wall of the second hollow shaft 5 and the inner wall of the rotating lever joint 6 are matched, the outer wall of the first hollow shaft 2 is fixedly connected with a fixed ring 203, the rear end of the fixed ring 203 is sleeved with a second O-shaped rubber ring 204, the fixed ring 203 is rotatably provided with a cylindrical roller bearing 205, the fixed ring 203 and the arc-shaped outer wall of the first hollow shaft 2 and the inner wall of the third communication inner groove 403 on the shell 4 are matched.

[0024] The fixed threaded column 603 on the rotating rod joint 6 passes through the fixed perforation 602 of the outer wall of the rotating rod joint 6, the connecting block 407, and the threaded mounting hole 501 of the outer wall of the second hollow shaft 5 in sequence, and is screwed to the threaded mounting hole 501 of the outer wall of the second hollow shaft 5, so as to realize the firm connection of the two, the rotating rod joint 6 is used for connecting an external power component, and power is transmitted to the second hollow shaft 5, the threaded mounting mode is combined tightly, can bear the force and vibration when high-pressure water injection, and is convenient to disassemble and maintain, meanwhile, the threaded connection sleeve 604 can further enhance the stability and reliability of the connection, in the process of use, the end cover 3 plays a role in sealing and fixing the first hollow shaft 2, prevents high-pressure water from leaking from the gap between the first hollow shaft 2 and the shell 4, and limits the axial movement of the first hollow shaft 2, so as to ensure the stability of the whole, in the process of liquid flow, the insertion ring 504 is inserted into the first insertion groove 201, and the outer wall of the rotating sealing gasket 505 and the arc-shaped inner wall of the first placement groove 202 are mutually attached, so as to match the sealing bearing 503, so that when high-pressure water enters the second hollow shaft 5 from the first hollow shaft 2, the high-strength sealing property can be maintained, in the process of use, the water injector and the water injection joint 1 are connected, then the tunnel brick and the threaded connection sleeve 604 are connected, then the high-pressure pump is started, water is sent into the high-pressure water injector through the water injection joint 1, high-pressure water passes through the first hollow shaft 2 and the second hollow shaft 5 in sequence, and is finally injected into the coal seam crack, so as to realize the role of dust reduction, pressure reduction and coal cracking.

Claims

1. A high-pressure water injector for drilling with a full-hydraulic gallery drill, comprising a water injection connector (1); characterized in that: It also includes end cover (3), second hollow shaft (5) and rotating rod joint (6), one end of first hollow shaft (2) is sleeved in shell (4), the other end of first hollow shaft (2) is connected with water injection joint (1), the outer wall of first hollow shaft (2) is also sleeved with end cover (3), the outer wall of shell (4) is provided with four buckle holes (404), end cover (3) and shell (4) are connected through buckle hole (404), the rear end of shell (4) is provided with rotating bearing (406), the inner ring of rotating bearing (406) is fixedly connected with connecting block (407), fixed threaded column (603) is arranged on connecting block (407), the outer wall of rotating rod joint (6) is provided with fixed perforation (602), the outer wall of second hollow shaft (5) is provided with four threaded mounting holes (501), rotating rod joint (6) and second hollow shaft (5) are threadedly installed on threaded mounting hole (501) through fixed threaded column (603) in turn after passing through fixed perforation (602) and connecting block (407), the front end of second hollow shaft (5) is fixedly connected with connecting pipe (502), the front end of connecting pipe (502) is fixedly connected with insertion ring (504), the rear end of first hollow shaft (2) is provided with first insertion slot (201), insertion ring (504) and first insertion slot (201) are matched.

2. The high-pressure water injector for drilling with a full hydraulic gallery drill rig according to claim 1, characterized in that: Water injection joint (1) and first hollow shaft (2) are provided with first O-shaped rubber ring (101) at the mutual butt joint, and the first O-shaped rubber ring (101) is placed in the recess at the rear end of the water injection joint (1).

3. The high-pressure water injector for drilling with a full hydraulic gallery drill rig according to claim 1, characterized in that: The rear end of the first hollow shaft (2) is provided with a first placement slot (202), and the outer wall of the insertion ring (504) is sleeved with a rotary sealing gasket (505), and the arc-shaped outer wall of the rotary sealing gasket (505) and the arc-shaped inner wall of the first placement slot (202) are matched with each other.

4. The high-pressure water injector for drilling with a full hydraulic gallery drill rig according to claim 1, characterized in that: The rear end of the shell (4) is provided with a first communication inner groove (401), and the inner wall of the first communication inner groove (401) and the outer wall of the second hollow shaft (5) are matched with each other, and the shell (4) is provided with a second communication inner groove (402), and the inner wall of the second communication inner groove (402) and the outer wall of the connecting pipe (502) are matched with each other, and the outer wall of the connecting pipe (502) is provided with a sealing bearing (503), and the sealing bearing (503) and the inner wall of the second communication inner groove (402) are tightly matched.

5. The high-pressure water injector for drilling with a full hydraulic gallery drill rig according to claim 1, characterized in that: The rear end of the shell (4) is provided with a bearing placement slot (405), and the rotating bearing (406) is rotatably arranged in the bearing placement slot (405), and the front end of the rotating rod joint (6) and the rear end of the shell (4) are matched with each other.

6. The high-pressure water injector for drilling with a full hydraulic gallery drill rig according to claim 1, characterized in that: The rear end of the rotating rod joint (6) is fixedly connected with a threaded connecting sleeve (604), the outer wall of the rotating rod joint (6) is provided with an annular groove (601), and the outer wall of the second hollow shaft (5) and the inner wall of the rotating rod joint (6) are matched.

7. The high-pressure water injector for drilling with a full hydraulic gallery drill rig according to claim 1, characterized in that: The outer wall of the first hollow shaft (2) is fixedly connected with a fixing ring (203), the rear end of the fixing ring (203) is sleeved with a second O-shaped rubber ring (204), the fixing ring (203) is rotatably provided with a cylindrical roller bearing (205), and the fixing ring (203) and the arc-shaped outer wall of the first hollow shaft (2) are attached to the inner wall of the third communicating inner groove (403) on the shell (4).

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