Pressure sealing hole water stopper for geological drilling hole

Abstract

The utility model relates to the technical field of geological drilling water stops, in particular to a pressure sealing hole water stop for a geological drilling hole, which comprises a drill rod and a drill bit, the drill bit is arranged on the lower end face of the drill rod, a sealing mechanism is arranged in the drill rod, and the sealing mechanism comprises a fixing seat, a vibration rod, a sealing plug, an air bag and a rubber ring. The fixed seat is fixedly connected to the inner side wall of the drill rod, the vibration rods are installed on the side wall of the fixed seat in an annular array mode, and the sealing plugs are connected to the vibration rods in a sliding mode. And the cleaning head is driven to clean impurities, so that a sealed contact end face is kept smooth, the sealing performance of equipment is ensured, underground water and gas are prevented from flowing reversely, and the safety of workers and the equipment is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to geological drilling water stopper technical field especially relates to a pressure closed hole water stopper for geological drilling hole. BACKGROUND

[0002] The water stopper is a device that is sealed by the pressure of water flow during the process of geological drilling hole, if the water flow surges, the construction engineering quality cannot be guaranteed, and the subsequent operation brings the hidden danger of low quality, and the leakage water or leakage natural gas accident occurs, and the staff casualties accident is caused.

[0003] The existing water stopper will cause the sealing property to drop due to the abrasion of the rubber ring at the sealing position after using for a period of time, and at the same time, impurities will be attached to the sealing end face during drilling, so that the end face is uneven, and the sealing property is also affected. UTILITY MODEL CONTENTS

[0004] The utility model discloses a pressure closed hole water stopper for geological drilling hole, which can solve the problem of the sealing property of the existing water stopper being affected by the abrasion of the rubber ring and the attachment of impurities to the sealing end face during drilling.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A pressure closed hole water stopper for geological drilling hole, comprising a drill rod and a drill bit, the drill bit is arranged on the lower end face of the drill rod;

[0007] The drill rod is provided with a sealing mechanism, the sealing mechanism comprises a fixed seat, a vibration rod, a sealing plug, an air bag and a rubber ring, the fixed seat is fixedly connected to the inner side wall of the drill rod, a plurality of vibration rods are arranged in an annular array on the side wall of the fixed seat, the sealing plug is slidably connected to the vibration rod, the sealing plug is slidably connected to the fixed seat, an installation groove is formed in the side wall of the sealing plug, the air bag is fixedly connected to the inner side wall of the installation groove, the rubber ring is fixedly connected to the outer surface of the air bag, and the rubber ring is slidably connected to the inner side wall of the installation groove.

[0008] Preferably, the fixed seat is fixedly connected to a gas cylinder at one end close to the sealing plug, a piston plate is slidably connected to the inner side wall of the gas cylinder, a slide rod is fixedly connected between the piston plate and the sealing plug, and the slide rod is slidably connected to one side wall of the gas cylinder.

[0009] Preferably, a sliding ring is slidably connected to the vibration rod, a driving rod is rotatably connected to the side wall of the sliding ring, a cleaning head is fixedly connected to the side wall of the driving rod, and the cleaning head is slidably connected to the inner side wall of the fixed seat.

[0010] Preferably, an elastic rod is fixedly connected to the outer surface of the driving rod, the elastic rod is slidably connected to the vibration rod, and a blade is fixedly connected to the outer surface of the driving rod.

[0011] Preferably, a conduit is fixedly connected between the air cylinder and the air bag, and the conduit is fixedly connected to the inner side wall of the sealing plug.

[0012] Preferably, an extrusion spring is fixedly connected between the piston plate and the air cylinder, and a return spring is fixedly connected between the sliding ring and the fixed seat.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The high-pressure water flow injected during drilling drives the blade to rotate, constantly generates vibration to shake off impurities on the end face of the fixed seat, and drives the cleaning head to clean the impurities, so that the contact end face is kept smooth, the sealing property of the equipment is ensured, the counterflow of underground water is avoided, and the safety of workers and equipment is ensured.

[0015] 2. The sealing plug is extruded by the underground water flow pressure to extrude the air cylinder, the gas is extruded into the air bag, the air bag is filled and expanded to tightly contact the rubber ring with the sealing plug, the rubber ring can still keep tight contact in a certain degree of wear, and when the water flow flows forward, the air bag shrinks to put the rubber ring into the mounting groove of the sealing plug, so that the wear of the rubber ring is reduced and the service life of the rubber ring is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A sealing plug structure diagram of the pressure closed hole water stopper for geological drilling holes is provided for the utility model;

[0017] Figure 2 An air cylinder structure diagram of the pressure closed hole water stopper for geological drilling holes is provided for the utility model;

[0018] Figure 3 An air bag structure diagram of the pressure closed hole water stopper for geological drilling holes is provided for the utility model;

[0019] Figure 4 A blade structure diagram of the pressure closed hole water stopper for geological drilling holes is provided for the utility model.

[0020] In the figure: 1 drill rod, 2 drill bit, 3 fixed seat, 4 vibration rod, 5 sealing plug, 6 air bag, 7 rubber ring, 8 air cylinder, 9 piston plate, 10 sliding rod, 11 sliding ring, 12 drive rod, 13 cleaning head, 14 elastic rod, 15 blade, 16 conduit, 17 extrusion spring, 18 return spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] The terms such as "upper", "lower", "left", "right", "middle" and "one" cited in the utility model are only for the convenience of clear description, rather than to limit the scope of the utility model, and the change or adjustment of the relative relationship is also regarded as the scope of the utility model without substantial change of the technical content.

[0023] Reference Figures 1-4 A pressure sealing hole water stopper for geological drilling holes, comprising a drill rod 1 and a drill bit 2, the drill bit 2 is arranged at the lower end face of the drill rod 1, and the drill bit 2 is hollow inside.

[0024] The drill rod 1 is provided with a sealing mechanism, the sealing mechanism comprises a fixed seat 3, a vibration rod 4, a sealing plug 5, an air bag 6 and a rubber ring 7, the fixed seat 3 is fixedly connected to the inner side wall of the drill rod 1, a plurality of vibration rods 4 are arranged in an annular array on the side wall of the fixed seat 3, the sealing plug 5 is slidably connected to the vibration rod 4, the sealing plug 5 is sealingly and slidably connected to the fixed seat 3, an installation groove is formed in the side wall of the sealing plug 5, the installation groove is annular, the air bag 6 is fixedly connected to the inner side wall of the installation groove, and the rubber ring 7 is fixedly connected to the outer surface of the air bag 6 and slidably connected to the inner side wall of the installation groove.

[0025] One end of the fixed seat 3 close to the sealing plug 5 is fixedly connected with an air cylinder 8, a conduit 16 is fixedly and communicatively connected between the air cylinder 8 and the air bag 6, the conduit 16 is fixedly connected to the inner side wall of the sealing plug 5, a piston plate 9 is sealingly and slidably connected to the inner side wall of the air cylinder 8, an extrusion spring 17 is fixedly connected between the piston plate 9 and the air cylinder 8, a sliding rod 10 is fixedly connected between the piston plate 9 and the sealing plug 5, the sliding rod 10 is slidably connected to one side wall of the air cylinder 8, and the sliding rod 10 is not sealed with the air cylinder 8.

[0026] The sliding ring 11 is slidably connected to the vibration rod 4, the reset spring 18 is fixedly connected between the sliding ring 11 and the fixed seat 3, the side wall of the sliding ring 11 is rotatably connected with the driving rod 12, the outer surface of the driving rod 12 is fixedly connected with the elastic rod 14, the elastic rod 14 has good elasticity and will be bent and deformed when subjected to certain external force and will quickly recover after the external force disappears, the elastic rod 14 is slidably connected with the vibration rod 4, the outer surface of the driving rod 12 is fixedly connected with the blade 15, the side wall of the driving rod 12 is fixedly connected with the cleaning head 13, the cleaning head 13 is slidably connected with the inner side wall of the fixed seat 3, the cleaning head 13 has good elasticity and can be easily deformed, the front end is conical, can easily explore into the fixed seat 3 and then be deformed when subjected to extrusion, and a larger through groove is arranged in the cleaning head 13 and will not hinder the normal flow of water flow.

[0027] In the utility model, when drilling operation is carried out, the drill bit 2 is continuously drilled downward, the cooling liquid and the cleaning water can flow from the drill rod 1 to the drill bit 2 direction under the action of the external water pump, the high-pressure water flow drives the sealing plug 5 to move on the vibration rod 4 to the drill bit 2 direction, simultaneously pulls the sliding rod 10 and the piston plate 9 and stretches and extrudes the spring 17, the gas in the gas bag 6 returns to the air cylinder 8 along the conduit 16, the gas bag 6 becomes shriveled and shrinks inward, the rubber ring 7 is received in the installation groove of the sealing plug 5, the erosion of the rubber ring 7 by the impurities in the water flow is reduced, the abrasion speed is reduced, the water flow drives the sliding ring 11 to move to the fixed seat 3 direction, the cleaning head 13 is clamped into the fixed seat 3, the blade 15 drives the driving rod 12 to rotate under the action of the high-pressure water flow, the driving rod 12 drives the cleaning head 13 and the elastic rod 14 to rotate, the elastic rod 14 is bent and deformed after contacting the vibration rod 4, then overcomes the vibration rod 4 and hits the vibration rod 4 located at the rear under the action of inertia, the impurities on the surface of the fixed seat 3 are loosened by the vibration, the cleaning head 13 rotates and cleans all the impurities on the surface of the fixed seat 3, makes the surface of the fixed seat 3 and the contact surface of the sealing plug 5 keep smooth, and the sealing property of the sealing plug 5 is guaranteed.

[0028] When drilling to a certain depth, the external water pump is closed, the underground water flow flows into the drill bit 2 under the action of pressure, the sliding ring 11 is reset under the elastic force of the reset spring 18, the sliding ring 11 drives the driving rod 12 and the cleaning head 13 to leave the fixed seat 3, the sealing plug 5 is pressed into the fixed seat 3 under the action of the extruding spring 17 and the underground water pressure, the gas in the air cylinder 8 enters the gas bag 6 along the conduit 16, the gas bag 6 expands and pushes the rubber ring 7 outward, the rubber ring 7 keeps close contact with the fixed seat 3, even if the rubber ring 7 is abraded, the rubber ring 7 still has good sealing property to the fixed seat 3 under the extruding force of the gas bag 6, the reverse flow of the underground water is avoided, the accidents of water and air leakage are avoided, and the safety of workers is guaranteed.

[0029] In the utility model, unless there is definite stipulation and limitation, the terms "installation", "connection", "link", "fixing" and the like should be understood in a broad sense.

[0030] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A pressure-locked hole packer for use in geological drilling holes, comprising a drill rod (1) and a drill bit (2), characterized in that The drill bit (2) is arranged at the lower end surface of the drill rod (1); The drill rod (1) is provided with a sealing mechanism, the sealing mechanism comprises a fixed seat (3), a vibration rod (4), a sealing plug (5), an air bag (6), a rubber ring (7), the fixed seat (3) is fixedly connected to the inner side wall of the drill rod (1), a plurality of vibration rods (4) are arranged in an annular array on the side wall of the fixed seat (3), the sealing plug (5) is slidably connected to the vibration rod (4), the sealing plug (5) is slidably connected to the fixed seat (3), an installation groove is formed in the side wall of the sealing plug (5), the air bag (6) is fixedly connected to the inner side wall of the installation groove, and the rubber ring (7) is fixedly connected to the outer surface of the air bag (6), and the rubber ring (7) is slidably connected to the inner side wall of the installation groove.

2. A pressure-activated hole-packer for use in geological drilling, according to claim 1, characterised in that The fixed seat (3) is fixedly connected with an air cylinder (8) at one end close to the sealing plug (5), the inner side wall of the air cylinder (8) is slidably connected with a piston plate (9), the piston plate (9) and the sealing plug (5) are fixedly connected with a sliding rod (10), and the sliding rod (10) is slidably connected with one side wall of the air cylinder (8).

3. A pressure-activated hole-packer for use in geological drilling, according to claim 2, characterised in that, The vibration rod (4) is slidably connected with a sliding ring (11), the side wall of the sliding ring (11) is rotatably connected with a driving rod (12), the side wall of the driving rod (12) is fixedly connected with a cleaning head (13), and the cleaning head (13) is slidably connected with the inner side wall of the fixed seat (3).

4. A pressure-activated hole-packer for use in geological drilling according to claim 3, characterised in that The outer surface of the driving rod (12) is fixedly connected with an elastic rod (14), the elastic rod (14) is slidably connected with the vibration rod (4), and the outer surface of the driving rod (12) is fixedly connected with a blade (15).

5. A pressure-locked hole seal for use in geological drilling holes according to claim 2, characterised in that The air cylinder (8) and the air bag (6) are fixedly connected with a conduit (16), and the conduit (16) is fixedly connected to the inner side wall of the sealing plug (5).

6. A pressure-activated hole-packer for use in geological drilling according to claim 3, characterised in that The piston plate (9) and the air cylinder (8) are fixedly connected with an extrusion spring (17), and the sliding ring (11) and the fixed seat (3) are fixedly connected with a return spring (18).

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