Pressure seal hole stopper for geological drilling

Abstract

The application discloses a pressure sealing hole water stopper for geological drilling and relates to the technical field of geological drilling.The water stopper comprises a plug cover, a water stop plug and a pressure assembly, the inside of the plug cover is provided with a fixing frame, the water stop plug is clamped on the bottom sidewall of the plug cover, an outlet pipe is welded on the bottom sidewall of the water stop plug, and the pressure assembly is installed on the upper sidewall of the water stop plug.The inner nesting and the anti-coming-off sleeve are made of rubber material, have high toughness, can guarantee the mutual sealing property when contacting the drill bit, the height of the water stop plug in the plug cover can be adjusted through the pressure assembly, when the water stop plug and the plug cover are in an elongated state, the water outlet holes on the outer wall of the water stop plug are exposed, watering work is carried out, water above the plug cover flows into the lower part, and when the plug cover and the water stop plug are in a contracted state, the water outlet holes are sealed in the inside of the plug cover, that is, the sealing water stopping effect is formed.

Description

Technical Field

[0001] This invention belongs to the field of geological drilling technology, and in particular relates to a pressure sealing hole water stopper for geological drilling. Background Technology

[0002] Geological drilling is one of the most important geological exploration methods. Drilling rigs allow for the extraction of geological samples from different depths within the borehole, facilitating geological surveys of the area. However, during geological drilling, water backflow often occurs. If this phenomenon is not controlled, it can lead to significant water accumulation in the borehole, affecting the accuracy of the sample composition. To prevent water backflow, pressure-sealed borehole stoppers are used. These stoppers prevent water backflow within the borehole, ensuring the integrity of the samples taken. However, their practical application still has the following drawbacks:

[0003] 1. Existing pressure sealing hole water stoppers used in geological drilling are required not only to prevent water from flowing back up, but also to work well with the drilling rig. Therefore, the pressure sealing hole water stopper needs to contact the drill bit. However, as the drill bit rotates, there will be a certain gap between the pressure sealing hole water stopper and the drill bit, and some water will still flow back up through this gap.

[0004] 2. Existing pressure sealing hole water stoppers used for geological drilling cannot complete the task of watering the drill bit inside the hole to assist drilling work, because the water-stopping work is bidirectional rather than unidirectional. This not only greatly reduces the service life of the drill bit during prolonged drilling, but also causes the contact surface between the pressure sealing hole water stopper and the drill bit to become too hot.

[0005] 3. Existing pressure sealing borehole waterstops used in geological drilling are mostly made of metal to ensure their sustainability during use. The bottom inner wall of the waterstop is in contact with the drill rod, while its outer side is in contact with the water in the borehole. Since the water is permeable, it is easy for it to seep back into the interior of the waterstop.

[0006] Therefore, existing pressure sealing borehole stoppers for geological drilling cannot meet the needs of actual use, so there is an urgent need for improved technologies to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a pressure-sealing hole waterstop for geological drilling. Both the inner nest and the anti-detachment rubber sleeve are made of rubber material, which has high toughness and ensures a tight seal when in contact with the drill bit. The height of the waterstop plug within the plug cover can be adjusted via a pressure component. When the waterstop plug and plug cover are in an extended state, the water outlet on the outer wall of the waterstop plug is exposed, allowing water to flow from the top of the plug cover to the bottom. When the plug cover and waterstop plug are in a contracted state, the water outlet is sealed inside the plug cover, thus achieving a sealing and water-stopping effect. This solves the problems of existing pressure-sealing hole waterstops for geological drilling.

[0008] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0009] This invention relates to a pressure sealing hole water stopper for geological drilling, comprising a plug cover, a water-stopping plug, and a pressure assembly. The plug cover has a fixing frame inside, and the water-stopping plug is snapped onto the bottom side wall of the plug cover. An outlet pipe is welded onto the bottom side wall of the water-stopping plug, and the pressure assembly is installed on the upper side wall of the water-stopping plug.

[0010] Furthermore, the upper side wall of the plug cover is provided with a fixing groove, and there are four fixing grooves in total, which are respectively located at the four quadrant points of the plug cover. The bottom side wall of the plug cover is provided with an adjustment groove; the adjustment groove is arranged in an L-shaped structure, and one end of the adjustment groove is sealed inside the plug cover, while the other end is hollowed out and opened on the bottom side wall of the plug cover.

[0011] Furthermore, the fixing frame is configured in the shape of a circular plate, with a fixing strip glued to the bottom side wall of the fixing frame, a circular hole in the center of the fixing frame, and an inner nesting device glued to the inner wall of the circular hole in the center of the fixing frame.

[0012] Furthermore, the water-stop plug is designed as a hollow frustum, and an abutment ring larger than the maximum diameter of the water-stop plug is bonded to the outer wall of the large-diameter end of the water-stop plug.

[0013] Furthermore, an upper sealing groove is provided on the upper side wall of the large-diameter end of the water-stop plug, and an upper sealing strip is bonded inside the upper sealing groove. A lower sealing plate is welded to the bottom side wall of the large-diameter end of the water-stop plug, and a lower sealing strip is bonded to the upper side wall of the lower sealing plate.

[0014] Furthermore, a side water outlet groove is provided on the outer wall of the water-stop plug between the abutting ring and the lower sealing plate, and a water outlet hole is provided inside the side water outlet groove.

[0015] Furthermore, the outlet pipe and the water-stop plug are interconnected, and an anti-detachment sleeve is bonded to the bottom inner circumferential side wall of the outlet pipe. There are a total of six pressure components on the upper side wall of the water-stop plug, and the six pressure components are arranged in a ring array structure.

[0016] Furthermore, the pressure assembly includes a pressure spring and a spring connecting ring. The spring connecting ring is bonded to the upper and lower end sidewalls of the pressure spring. One end sidewall of the pressure spring is bonded to the bottom inner wall of the adjustment groove through the spring connecting ring, and the other end sidewall of the pressure spring is bonded to the bottom sidewall of the abutting ring on the water-stop plug through the spring connecting ring.

[0017] The present invention has the following beneficial effects:

[0018] 1. This invention, by setting up a plug cover, a fixing frame, and a water outlet pipe, allows the plug cover to contact the drill bit of the drilling rig through the fixing frame during use. The water outlet pipe at the bottom contacts the drill bit through an anti-detachment rubber sleeve on its inner wall. Simultaneously, the fixing frame also contacts the drill bit through an inner nest. Both the inner nest and the anti-detachment rubber sleeve are made of rubber material, which has high toughness and ensures a tight seal when in contact with the drill bit. This solves the problem of existing pressure sealing hole water stoppers used in geological drilling. In these devices, the pressure sealing hole water stopper not only needs to prevent water backflow but also needs to better cooperate with the drilling rig during drilling. Therefore, the pressure sealing hole water stopper needs to contact the drill bit. However, as the drill bit rotates, a certain gap exists between the pressure sealing hole water stopper and the drill bit, and some water still backflows through this gap.

[0019] 2. This invention, by setting up a pressure component and a water-stopping plug, allows for adjustment of the height of the water-stopping plug within the plug cover during use. When the water-stopping plug and plug cover are in an extended state, the water outlet on the outer wall of the water-stopping plug is exposed, allowing water to be poured in, causing water above the plug cover to flow downwards. When the plug cover and water-stopping plug are in a contracted state, the water outlet is sealed inside the plug cover, thus forming a sealing and water-stopping effect. This solves the problem of existing pressure-sealing hole water-stoppers used in geological drilling, which, when it is necessary to pour water into the drill bit inside the hole to assist drilling, cannot complete this task because the water-stopping work is bidirectional rather than unidirectional. Prolonged drilling not only greatly reduces the service life of the drill bit but also causes excessively high temperatures at the contact surface between the pressure-sealing hole water-stopper and the drill bit.

[0020] 3. This invention, by setting up a water outlet pipe and an anti-detachment sleeve, uses a metal water outlet pipe and a soft rubber sleeve. The outer wall of the anti-detachment sleeve is bonded to the inner wall of the water outlet pipe, thus preventing the sleeve from detaching on its own. The water outlet pipe, through the anti-detachment sleeve, contacts the drill rod, improving the tightness of the connection and preventing backflow of water in the borehole. This solves the problem of existing pressure-sealed borehole water stoppers used in geological drilling, which, in order to ensure their sustainability, are mostly made of metal. The bottom inner wall of the water stopper contacts the drill rod, while its outer side contacts the water in the borehole. Since this water is permeable, it is easy for it to backflow into the interior of the water stopper. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a pressure sealing hole water stopper for geological drilling;

[0023] Figure 2 A structural cross-sectional view of a pressure sealing hole water stopper for geological drilling;

[0024] Figure 3 This is a structural disassembly diagram of a pressure sealing hole water stopper used in geological drilling.

[0025] Figure 4 Disassembly diagram of the stop plug and pressure assembly;

[0026] Figure 5 for Figure 3 A schematic diagram of the structure at point A in the diagram;

[0027] Figure 6 This is a schematic diagram of the pressure assembly.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. End cap; 101. Adjustment groove; 102. Fixing groove; 2. Fixing bracket; 201. Fixing strip; 202. Inner nest; 3. Water-stopping plug; 301. Abutting ring; 302. Upper sealing groove; 3021. Upper sealing strip; 303. Lower sealing plate; 3031. Lower sealing strip; 304. Side water outlet groove; 3041. Water outlet hole; 4. Outlet pipe; 401. Anti-derailment sleeve; 5. Pressure assembly; 501. Pressure spring; 502. Spring connecting ring. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] Please see Figures 1 to 4 As shown, the present invention is a pressure sealing hole water stopper for geological drilling, including a plug cover 1, a water stop plug 3 and a pressure component 5. A fixing frame 2 is provided inside the plug cover 1. The water stop plug 3 is snapped onto the bottom side wall of the plug cover 1. An outlet pipe 4 is welded onto the bottom side wall of the water stop plug 3. The pressure component 5 is installed on the upper side wall of the water stop plug 3.

[0032] Among them, such as Figure 2 and 3 As shown, the upper side wall of the plug cover 1 is provided with a fixing groove 102. There are four fixing grooves 102 in total, and the four fixing grooves 102 are respectively located at the four quadrant points of the plug cover 1. The bottom side wall of the plug cover 1 is provided with an adjustment groove 101. The adjustment groove 101 is L-shaped, and one end of the adjustment groove 101 is sealed inside the plug cover 1, while the other end is hollowed out and opened on the bottom side wall of the plug cover 1. The fixing frame 2 is circular plate shaped. A fixing strip 201 is glued to the bottom side wall of the fixing frame 2. A circular hole is opened at the center of the fixing frame 2. An inner nest 202 is glued to the inner wall of the circular hole at the center of the fixing frame 2.

[0033] Among them, such as Figure 2 and 4 As shown, the water-stop plug 3 is a hollow frustum-shaped structure. A contact ring 301, larger than the maximum diameter of the water-stop plug 3, is bonded to the outer wall of the large-diameter end of the water-stop plug 3. An upper sealing groove 302 is formed on the upper side wall of the large-diameter end of the water-stop plug 3, and an upper sealing strip 3021 is bonded inside the upper sealing groove 302. A lower sealing plate 303 is welded to the bottom side wall of the large-diameter end of the water-stop plug 3, and a lower sealing strip 3031 is bonded to the upper side wall of the lower sealing plate 303. A side water outlet groove 304 is formed on the outer wall of the water-stop plug 3 between the contact ring 301 and the lower sealing plate 303, and a water outlet hole 3041 is formed inside the side water outlet groove 304. The outlet pipe 4... The outlet pipe 4 is interconnected with the water-stop plug 3. An anti-detachment sleeve 401 is bonded to the bottom inner circumferential side wall. There are six pressure components 5 on the upper side wall of the water-stop plug 3, and the six pressure components 5 are arranged in a ring array. The pressure component 5 includes a pressure spring 501 and a spring connecting ring 502. The upper and lower side walls of the pressure spring 501 are bonded with spring connecting rings 502. One side wall of the pressure spring 501 is bonded to the bottom inner wall of the adjusting groove 101 through the spring connecting ring 502, and the other side wall of the pressure spring 501 is bonded to the bottom side wall of the abutting ring 301 on the water-stop plug 3 through the spring connecting ring 502.

[0034] During use, the height of the water-stop plug 3 inside the plug cover 1 can be adjusted by the pressure component 5. When the water-stop plug 3 and the plug cover 1 are in an extended state, the water outlet 3041 on the outer wall of the water-stop plug 3 is exposed, allowing water to be poured so that the water above the plug cover 1 flows to the bottom. When the plug cover 1 and the water-stop plug 3 are in a contracted state, the water outlet 3041 is sealed inside the plug cover 1, thus forming a sealing and water-stopping effect.

[0035] The above are merely preferred embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present invention.

Claims

1. A pressure sealing hole water stopper for geological drilling, comprising a plug cap (1), a water-stopping plug (3), and a pressure assembly (5), characterized in that: The plug cover (1) is provided with a fixing frame (2) inside. A water-stop plug (3) is snapped onto the bottom side wall of the plug cover (1). An outlet pipe (4) is welded onto the bottom side wall of the water-stop plug (3). A pressure component (5) is installed on the upper side wall of the water-stop plug (3). The upper side wall of the plug cover (1) is provided with a fixing groove (102). There are four fixing grooves (102) in total, and the four fixing grooves (102) are respectively located at the four quadrant points of the plug cover (1). The bottom side wall of the plug cover (1) is provided with an adjustment groove (101). The fixing frame (2) is arranged in a circular plate shape. A fixing strip (201) is glued to the bottom side wall of the fixing frame (2). A circular hole is opened at the center of the fixing frame (2). An inner nest (202) is glued to the inner wall of the circular hole at the center of the fixing frame (2). The upper sidewall of the large-diameter end of the water-stop plug (3) is provided with an upper sealing groove (302), and an upper sealing strip (3021) is bonded inside the upper sealing groove (302). The bottom sidewall of the large-diameter end of the water-stop plug (3) is welded with a lower sealing plate (303), and a lower sealing strip (3031) is bonded to the upper sidewall of the lower sealing plate (303). A side water outlet groove (304) is provided on the outer sidewall of the water-stop plug (3) between the abutting ring (301) and the lower sealing plate (303), and a water outlet hole (3041) is provided inside the side water outlet groove (304). The outlet pipe (4) and the water-stop plug (3) are interconnected. An anti-detachment sleeve (401) is bonded to the bottom inner circumferential side wall of the outlet pipe (4). There are six pressure components (5) on the upper side wall of the water-stop plug (3), and the six pressure components (5) are arranged in a ring array structure. The pressure component (5) includes a pressure spring (501) and a spring connecting ring (502). The pressure spring (501) has spring connecting rings (502) bonded to the upper and lower side walls. The plug cap (1) contacts the drill bit of the drilling machine through the fixing bracket (2), the outlet pipe (4) contacts the drill bit through the anti-detachment sleeve (401) on its inner wall, and the fixing bracket (2) also contacts the drill bit through the inner nest (202).

2. The pressure sealing hole water stopper for geological drilling according to claim 1, characterized in that: The water-stop plug (3) is a hollow frustum structure, and an abutting ring (301) larger than the maximum diameter of the water-stop plug (3) is bonded to the outer wall of the large diameter end of the water-stop plug (3).

Images