Reverse circulation device for complex geological conditions
By designing a reverse circulation device for complex geological conditions, including a slag-extracting cylinder assembly and a drill bit assembly, the problem of slow drilling speed and inability to discharge slag when drilling in a lonely stone area is solved, and efficient drilling and discharge of slag in a soil environment with more stones is achieved.
Patent Information
- Application Number
- CN202422036274.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-21
AI Technical Summary
When drilling in a lonely stone area, the drilling speed is slow, the inability to enter the scale and the inability to discharge the slag smoothly.
A reverse circulation device is designed, including a drill bit structure, a drill rod structure and a slurry drain pipe. The drill bit structure consists of a slag-exhaust barrel assembly and a drill bit assembly. The slag-exhaust barrel assembly is used to accommodate the stones drilled out by the drill bit assembly, and the stones are brought out through the slag-exhaust barrel assembly, combined with the gas air duct to assist in drilling.
During the drilling process, the stones at the bottom of the pit are effectively screened and removed, the drilling speed is improved, and the slag discharge is achieved smoothly, solving the problems of slow drilling speed and inability to enter the ruler.
Smart Images
Figure CN223119884U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drilling-related equipment, in particular to a reverse circulation device for complex geological conditions. Background Art
[0002] Reverse circulation construction uses mud to protect the wall and form a hole, which is usually applicable to geological conditions such as cohesive soil, sandy soil, containing a small amount of gravel and cobblestones (content less than 20%, particle size less than 2 / 3 of the inner diameter of the drill pipe); however, for the complex geological conditions at the riverside or river embankment and the area with boulders, the reverse circulation construction often has a slow drilling speed or cannot make progress.
[0003] In the prior art, the bit of the reverse circulation drill is a common conical bit with a simple structure, which is suitable for drilling under soft and relatively hard geological conditions. The cutting part of the conical bit is in a sharp cone shape, and the drilling effect is mainly achieved by the pressure around the center of the blade. Therefore, it is difficult to break boulders or cobblestones, and the broken blocks are difficult to remove after the boulders are broken, resulting in abnormal drilling. It should be noted that the common reverse circulation slag cleaning process is the reverse circulation slag discharge method, where the mud flows into the hole from the hole mouth, and at the same time, the sand pump sucks the slag along the inside of the drill pipe, so that the cut soil slag is sucked out from the inner cavity of the drill pipe and discharged into the sedimentation tank, and then flows into the mud tank after precipitation. However, such a method cannot achieve smooth slag discharge in the construction environment with boulders or cobblestones. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a reverse circulation device for complex geological conditions to alleviate the technical problems existing in the prior art, such as slow drilling speed, inability to make progress, and inability to achieve smooth slag discharge when the reverse circulation drill drills in the area with boulders.
[0005] To achieve the above purpose, the utility model adopts the following technical solutions:
[0006] In a first aspect, the utility model provides a reverse circulation device for complex geological conditions, including a bit structure, a drill pipe structure, and a slurry discharge pipe. The bit structure is connected to the slurry discharge pipe through the drill pipe structure, and the bit structure is arranged in the pit.
[0007] The bit structure includes a slag cleaning barrel assembly and a bit assembly. The slag cleaning barrel assembly is connected to the bit assembly, and the slag cleaning barrel assembly is used to accommodate the stones drilled by the bit assembly and take out the stones by lifting the slag cleaning barrel assembly out of the pit.
[0008] Further, the bit assembly includes a plurality of bit bodies. One end of each bit body is connected to the slag cleaning barrel assembly, and the other ends are converged and connected together to form a sharp shape.
[0009] Further, a plurality of cutter heads are provided on each of the drill bit bodies, and the plurality of cutter heads are spaced apart along the extending direction of the drill bit bodies.
[0010] Further, the slag scooping cylinder assembly includes a slag scooping cylinder body, one end of the slag scooping cylinder body is connected to the drill bit assembly, and the other end is used to be connected to the drill pipe structure through a connection end.
[0011] Further, a hole is formed in the side wall of the slag scooping cylinder body, and the hole is used to communicate the inside of the slag scooping cylinder body with its outside.
[0012] Further, the slag scooping cylinder assembly further includes a plurality of steel wire ropes, and the plurality of steel wire ropes are all connected to one end of the slag scooping cylinder body away from the drill pipe structure, and the plurality of steel wire ropes form a network structure for allowing stones to enter the slag scooping cylinder body.
[0013] Further, both ends of the plurality of steel wire ropes are connected to the inner wall of the slag scooping cylinder body to form a radial wire mesh structure.
[0014] Further, the drill pipe structure includes a connecting pipe and a hollow drill pipe, one end of the hollow drill pipe is connected to the connection end through the connecting pipe, and the other end is used to be connected to an external driving device.
[0015] Further, the drill pipe structure further includes a connecting member, the connecting member is connected to the hollow drill pipe, and the connecting member is connected to the slurry discharge pipe.
[0016] Further, the reverse circulation device for complex geological conditions further includes an air delivery wind pipe, one end of the air delivery wind pipe extends into the drill pipe structure, and the other end is used to be connected to an external air delivery device, and the air delivery wind pipe is used to blow air into the drill bit structure through the drill pipe structure.
[0017] The utility model can achieve the following beneficial effects:
[0018] In the first aspect, the utility model provides a reverse circulation device for complex geological conditions, which includes a drill bit structure, a drill pipe structure and a slurry discharge pipe. The drill bit structure is connected to the slurry discharge pipe through the drill pipe structure, and the drill bit structure is arranged in a pit. The drill bit structure includes a slag scooping cylinder assembly and a drill bit assembly. The slag scooping cylinder assembly is connected to the drill bit assembly, and the slag scooping cylinder assembly is used to accommodate the stones drilled by the drill bit assembly and take out the stones by lifting the slag scooping cylinder assembly out of the pit.
[0019] In the present utility model, the drill bit structure is connected to the drill pipe structure. During use, the drill bit structure is driven to rotate by the drill pipe structure, so that the stones in the sediment at the bottom of the pit can enter the slag scooping barrel assembly. After drilling a certain distance, the stones in the slag scooping barrel assembly can be taken out and then drilling can continue. Moreover, during the drilling process, the mud in the pit is discharged through the slurry discharge pipe.
[0020] Compared with the prior art, the reverse circulation device for complex geological conditions provided by the present utility model can screen the stones in the sediment at the bottom of the pit through the slag scooping barrel assembly during the drilling process, and leave the selected stones in the slag scooping barrel assembly, so as to be used in the soil environment with more stones.
[0021] In summary, the present utility model at least alleviates the technical problems existing in the prior art, such as slow drilling speed, inability to advance the drilling depth, and inability to smoothly discharge the slag when the reverse circulation drill rig drills in the boulder section. Description of the Drawings
[0022] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0023] Figure 1 It is the front view structure schematic diagram of the reverse circulation device for complex geological conditions provided by the embodiment of the present utility model;
[0024] Figure 2 It is the front view schematic diagram of the drill bit structure of the reverse circulation device for complex geological conditions provided by the embodiment of the present utility model;
[0025] Figure 3 It is the bottom view schematic diagram of the drill bit structure of the reverse circulation device for complex geological conditions provided by the embodiment of the present utility model.
[0026] Reference numerals: 1 - drill bit structure; 11 - slag scooping barrel assembly; 111 - slag scooping barrel body; 1111 - hole; 112 - connection end; 113 - steel wire rope; 12 - drill bit assembly; 121 - drill bit body; 122 - cutter head; 2 - drill pipe structure; 21 - connecting pipe; 22 - hollow drill pipe; 23 - connecting piece; 3 - slurry discharge pipe; 4 - air supply wind pipe; 5 - pit; 6 - sediment. Detailed Embodiments
[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model described and illustrated herein generally may be arranged and designed in a variety of different configurations.
[0028] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0029] It should be noted that: like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.
[0031] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.
[0032] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0033] The following will describe in detail some embodiments of the present utility model in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.
[0034] Embodiment 1
[0035] This embodiment provides a reverse circulation device for complex geological conditions. Referring to Figure 1 , the reverse circulation device for complex geological conditions includes a bit structure 1, a drill pipe structure 2, and a slurry discharge pipe 3. The bit structure 1 is connected to the slurry discharge pipe 3 through the drill pipe structure 2, and the bit structure 1 is disposed in a pit 5; the bit structure 1 includes a slag bucket assembly 11 and a bit assembly 12. The slag bucket assembly 11 is connected to the bit assembly 12, and the slag bucket assembly 11 is used to accommodate the stones drilled out by the bit assembly 12, and the stones are taken out by lifting the slag bucket assembly 11 out of the pit 5.
[0036] The embodiment of the present utility model at least alleviates the technical problems existing in the prior art that when a reverse circulation drill rig drills in a boulder section, the drilling speed is slow, the situation of unable to advance the footage occurs, and the smooth slag discharge cannot be achieved.
[0037] In the embodiment of the present utility model, the bit structure 1 is connected to the drill pipe structure 2. During use, the drill pipe structure 2 drives the bit structure 1 to rotate, so that the stones in the sediment 6 at the bottom of the pit 5 can enter the slag bucket assembly 11. After drilling a certain distance, the stones in the slag bucket assembly 11 can be taken out and then continue to drill; and during the drilling process, the slurry in the pit is discharged through the slurry discharge pipe 3.
[0038] Compared with the prior art, the reverse circulation device for complex geological conditions provided by the embodiment of the present utility model can screen the stones in the sediment 6 at the bottom of the pit 5 through the slag bucket assembly 11 during the drilling process, and leave the selected stones in the slag bucket assembly 11, so as to be used in a soil environment with more stones.
[0039] In an optional implementation manner of this embodiment, referring to Figure 3 , the bit assembly 12 includes a plurality of bit bodies 121. One end of each bit body 121 is connected to the slag bucket assembly 11, and the other ends are converged and connected together to form a sharp shape.
[0040] Specifically: One end of each bit body 121 is connected to the slag bucket assembly 11, and the other ends are converged and connected together to form a sharp shape, that is, a conical shape; and preferably, there are three bit bodies 121, and the three bit bodies 121 are distributed at an angle of 120°, and are connected to each other at the end far from the slag bucket assembly 11 to form a sharp shape.
[0041] Further, referring to Figure 2 orFigure 3 On each drill bit body 121, a plurality of cutter heads 122 are provided, and the plurality of cutter heads 122 are spaced apart along the extending direction of the drill bit body 121.
[0042] Specifically: On each drill bit body 121, a plurality of cutter heads 122 are provided, and the plurality of cutter heads 122 are spaced apart along the extending direction of the drill bit body 121; preferably, the cutter head 122 can be an alloy blade, and the cutter heads 122 on each drill bit body 121 are in a uniformly distributed state.
[0043] In an alternative embodiment of this example, referring to Figure 2 , the slag removal barrel assembly 11 includes a slag removal barrel body 111. One end of the slag removal barrel body 111 is connected to the drill bit assembly 12, and the other end is used to connect to the drill pipe structure 2 through the connection end 112.
[0044] Specifically: An accommodation space is provided inside the slag removal barrel body 111, and stones entering from one end of the drill bit assembly 12 are accommodated in this accommodation space. And at the end opposite to the drill bit assembly 12, a connection end 112 is provided, and this connection end 112 is used to connect to and communicate with the drill pipe structure 2.
[0045] Further, referring to Figure 2 , a hole 1111 is formed in the side wall of the slag removal barrel body 111, and the hole 1111 is used to communicate the inside of the slag removal barrel body 111 with its outside.
[0046] Specifically: A hole 1111 is formed in the side wall of the slag removal barrel body 111, and there are a plurality of holes 1111. The plurality of holes 1111 are spaced apart circumferentially along the side wall of the slag removal barrel body 111 to communicate the inside of the slag removal barrel body 111 with its outside, so that the mud in the pit 5 can enter the slag removal barrel body 111.
[0047] In an alternative embodiment of this example, referring to Figure 3 , the slag removal barrel assembly 11 further includes a plurality of steel wire ropes 113. The plurality of steel wire ropes 113 are all connected to the end of the slag removal barrel body 111 away from the drill pipe structure 2, and the plurality of steel wire ropes 113 form a network structure to allow stones to enter the slag removal barrel body 111.
[0048] Specifically: The plurality of steel wire ropes 113 are all connected to the end of the slag removal barrel body 111 away from the drill pipe structure 2, and the plurality of steel wire ropes 113 form a network structure to allow stones of corresponding size to enter the slag removal barrel body 111 from the meshes of the network structure. And the network structure formed by the plurality of steel wire ropes 113 can keep the stones in the slag removal barrel body 111, thereby realizing continuously collecting stones during the drilling process to meet the usage requirements of continuous drilling.
[0049] Further, referring toFigure 3 Both ends of multiple wire ropes 113 are connected to the inner wall of the slag-dredging barrel body 111 to form a radial wire mesh structure.
[0050] Specifically: Both ends of multiple wire ropes 113 are connected to the inner wall of the slag-dredging barrel body 111, and multiple wire ropes 113 intersect at one point. Preferably, this intersection point can be located at the center of the bottom of the slag-dredging barrel body 111.
[0051] In an alternative embodiment of this example, referring to Figure 1 The drill pipe structure 2 includes a connecting pipe 21 and a hollow drill pipe 22. One end of the hollow drill pipe 22 is connected to the connecting end 112 through the connecting pipe 21, and the other end is used to be connected to an external driving device.
[0052] Specifically: One end of the hollow drill pipe 22 is connected to the connecting end 112 through the connecting pipe 21, and the other end is used to be connected to an external driving device; preferably, the external driving device drives the slag-dredging barrel body 111 to rotate through the hollow drill pipe 22 and the connecting pipe 21 to achieve the use effect of downward drilling.
[0053] Furthermore, referring to Figure 1 The drill pipe structure 2 further includes a connecting member 23. The connecting member 23 is connected to the hollow drill pipe 22, and the connecting member 23 is connected to the slurry discharge pipe 3.
[0054] Specifically: The connecting member 23 is connected to the hollow drill pipe 22, and the connecting member 23 is connected to the slurry discharge pipe 3; preferably, the slurry discharge pipe 3 is connected and communicated with the hollow drill pipe 22 through the connecting member 23, and the slurry discharge pipe 3 is used to suck and discharge the slurry from within the drill bit structure 1 through the drill pipe structure 2.
[0055] In an alternative embodiment of this example, referring to Figure 1 The reverse circulation device for complex geological conditions further includes an air delivery wind pipe 4. One end of the air delivery wind pipe 4 extends into the drill pipe structure 2, and the other end is used to be connected to an external air delivery device. The air delivery wind pipe 4 is used to blow air into the drill bit structure 1 through the drill pipe structure 2.
[0056] Specifically: One end of the air delivery wind pipe 4 extends into the drill pipe structure 2, and the other end is used to be connected to an external air delivery device; preferably, air is blown into the drill pipe structure 2 through the air delivery wind pipe 4. Specifically, an air compressor is used for air compression. The air delivery wind pipe 4 is inserted at the 1 / 2 position of the drill pipe structure 2 to mix the gas with the slurry, increase the upward buoyancy of the slurry, drive the slurry and drill cuttings to move upward, and increase the pump suction effect at the bottom of the drill pipe structure 2.
[0057] Finally, it should be noted that the embodiments in this specification are all described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. The above embodiments in this specification are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. An anti-circulation device for complex geological conditions, characterized in that, It includes a drill bit structure (1), a drill pipe structure (2) and a slurry discharge pipe (3). The drill bit structure (1) is connected to the slurry discharge pipe (3) through the drill pipe structure (2), and the drill bit structure (1) is arranged in a pit (5). The drill bit structure (1) includes a slag removal barrel assembly (11) and a drill bit assembly (12). The slag removal barrel assembly (11) is connected to the drill bit assembly (12), and the slag removal barrel assembly (11) is used to accommodate the stones drilled out by the drill bit assembly (12), and the slag removal barrel assembly (11) is lifted out of the pit (5) to take out the stones. The slag removal barrel assembly (11) includes a slag removal barrel body (111). One end of the slag removal barrel body (111) is connected to the drill bit assembly (12), and the other end is used to be connected to the drill pipe structure (2) through a connection end (112). The reverse circulation device for complex geological conditions further includes an air supply duct (4). One end of the air supply duct (4) extends into the drill pipe structure (2), and the other end is used to be connected to an external air supply device. The air supply duct (4) is used to blow air into the drill bit structure (1) through the drill pipe structure (2).
2. The reverse circulation device for complex geological conditions according to claim 1, characterized in that The drill bit assembly (12) includes a plurality of drill bit bodies (121). One end of each drill bit body (121) is connected to the slag removal barrel assembly (11), and the other ends converge and are connected together to form a sharp shape.
3. The reverse circulation device for complex geological conditions according to claim 2, characterized in that, Each drill bit body (121) is provided with a plurality of cutting heads (122), and the plurality of cutting heads (122) are spaced apart along the extending direction of the drill bit body (121).
4. The reverse circulation device for complex geological conditions according to claim 1, characterized in that, A hole (1111) is formed in the side wall of the slag removal barrel body (111), and the hole (1111) is used to communicate the inside of the slag removal barrel body (111) with its outside.
5. The reverse circulation device for complex geological conditions according to claim 1, characterized in that, The slag removal barrel assembly (11) further includes a plurality of steel wire ropes (113). The plurality of steel wire ropes (113) are all connected to one end of the slag removal barrel body (111) far from the drill pipe structure (2), and the plurality of steel wire ropes (113) form a network structure to allow stones to enter the slag removal barrel body (111).
6. The reverse circulation device for complex geological conditions according to claim 5, characterized in that, Both ends of the plurality of steel wire ropes (113) are connected to the inner wall of the slag removal barrel body (111) to form a radial wire mesh structure.
7. The reverse circulation device for complex geological conditions according to claim 1, wherein The drill pipe structure (2) includes a connecting pipe (21) and a hollow drill pipe (22). One end of the hollow drill pipe (22) is connected to the connection end (112) through the connecting pipe (21), and the other end is used to be connected to an external driving device.
8. The reverse circulation device for complex geological conditions according to claim 7, characterized in that, The drill pipe structure (2) further includes a connecting member (23). The connecting member (23) is connected to the hollow drill pipe (22), and the connecting member (23) is connected to the slurry discharge pipe (3).