Layered water stopping device for hydrogeological drilling

Abstract

The utility model provides a hydrogeological drilling layered water stop device which comprises a device body, the device body comprises a fixing pipe, a drill bit is rotatably installed at one end of the fixing pipe, a fixing seat is movably installed at one end of the fixing pipe, and a supporting pipe is movably installed at the other end of the fixing seat. A fixing disc is installed between the supporting pipe and the fixing pipe, a supporting disc is movably installed on one side of the fixing disc, a ring base is fixedly installed between the supporting disc and the fixing disc, an output shaft is rotatably installed at one end of the supporting pipe, and a water pumping pipe is fixedly installed at one end of the supporting pipe. When the layered water stopping device for hydrogeological drilling is used, the fixing disc and the supporting disc are driven by the lifting mechanism to extrude, the annular seat is deformed through extrusion to form an arc-shaped seat to seal a drilled hole, double-layer water stopping is achieved after sealing, the supporting disc moves again while double-layer water stopping is conducted, the layered space can be compressed, and later water pumping work is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of geological drilling equipment, in particular to a hydrogeological drilling layered water stopping device. Background Art

[0002] When conducting hydrogeological drilling in areas with multiple aquifers, in order to obtain data on the water volume, water level, water quality and water temperature of each aquifer, it is necessary to conduct observations and pumping tests on each aquifer separately. Layered pumping is an important part of hydrogeological exploration technology.

[0003] According to the patent document with the existing publication number CN210977386U, a layered water-stopping device for hydrogeological drilling is disclosed, which includes a support assembly, a vertically downward steel pipe is installed on the support assembly, a drilling mechanism is installed on the bottom end of the steel pipe, a water-stopping assembly is installed on the outer wall of the steel pipe, a partition is fixed inside the steel pipe, the positions of the partition and the water-stopping assembly correspond to each other, and a layered pumping mechanism is provided inside the steel pipe. When using this technical solution, the hydraulic telescopic cylinder is started to support the support plate and the steel pipe, and the motor is started. The motor drives the drill bit to rotate through the rotating shaft, and the drilling mechanism is driven down by the hydraulic telescopic cylinder until it reaches the corresponding height position, thereby improving the efficiency of the drilling work. With respect to the above technical solution, although this solution adjusts the drilling depth, it cannot complete double layered water-stopping and multi-point water pumping detection during use, which is inconvenient during use. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a hydrogeological drilling stratified water-stopping device to solve the problems raised in the above-mentioned background technology. The utility model has a novel structure. When in use, the fixed plate and the support plate are squeezed under the drive of the lifting mechanism. The extrusion causes the ring seat to deform to form an arc seat to seal the borehole. After sealing, double-layer water-stopping is achieved. At the same time as the double-layer water-stopping, the support plate moves again to compress the stratified space, which is convenient for the subsequent pumping work.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a hydrogeological drilling stratified water-stopping device, including a device body, the device body including a fixed tube, a drill bit is rotatably installed at one end of the fixed tube, a fixed seat is movably installed at one end of the fixed tube, a support tube is movably installed at the other end of the fixed seat, a fixed plate is installed between the support tube and the fixed tube, a support plate is movably installed on one side of the fixed plate, a ring seat is fixedly installed between the support plate and the fixed plate, an output shaft is rotatably installed at one end of the support tube, and a water pumping pipe is fixedly installed at one end of the support tube.

[0006] Furthermore, an annular groove is formed on the inner wall of the annular seat, a convex ring is movably installed inside the annular groove, and the convex ring is fixedly installed on one end of the fixed tube and the supporting tube respectively.

[0007] Furthermore, a separation plate is welded between the ring seats, a lifting mechanism is fixedly installed on the top and bottom of the separation plate, a movable column is installed on the lifting mechanism, and one end of the movable column is fixedly installed on the fixed plate.

[0008] Furthermore, a limiting assembly is installed between the fixed plate and the supporting plate, and the limiting assembly includes a positioning tube, and the positioning tube is fixedly installed on the supporting plate.

[0009] Furthermore, openings are respectively provided between the positioning tube and the supporting plate, a limiting tube is movably installed inside the positioning tube, and a through hole is provided on the limiting tube.

[0010] Furthermore, a connecting pipe is fixedly installed on the support plate, and the connecting pipe is matched with one end of the water pumping pipe respectively, and one end of the output shaft is fixed on the drill bit.

[0011] Beneficial effects of the utility model:

[0012] 1. This hydrogeological drilling stratified water-stopping device, when in use, is squeezed between a fixed plate and a support plate driven by a lifting mechanism, and the ring seat is deformed by the squeezing to form an arc seat to seal the borehole, and double-layer water-stopping is achieved after sealing. At the same time as the double-layer water-stopping, the support plate moves again to compress the stratified space, which is convenient for the subsequent pumping work.

[0013] 2. In this hydrogeological drilling stratified water-stopping device, the limit tube and the positioning tube cooperate to provide multi-point support between the fixed plate and the support plate, so as to avoid damage to the ring seat caused by rotational dislocation between the fixed plate and the support plate under the rotation of the drill bit in the later stage. In addition, the positioning tube and the limit tube cooperate to facilitate the use of water pumping in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a hydrogeological drilling layered water-stopping device of the utility model;

[0015] Figure 2 It is a schematic structural diagram of a side cross-section of a fixed pipe and a support pipe of a hydrogeological drilling layered water-stopping device of the utility model;

[0016] Figure 3 This is a schematic diagram of the top view of the structure of a separation plate of a hydrogeological drilling stratified water-stopping device of the utility model;

[0017] Figure 4 It is a schematic diagram of a top view cross-sectional structure of a support plate of a hydrogeological drilling layered water-stopping device of the utility model;

[0018] Figure 5 This is a schematic structural diagram of an enlarged point A of a hydrogeological drilling layered water-stopping device of the utility model;

[0019] In the figure: 1. fixed tube; 2. drill bit; 3. fixed plate; 4. support plate; 5. ring seat; 6. fixed seat; 7. support tube; 8. output shaft; 9. water pumping pipe; 10. ring groove; 11. convex ring; 12. separator plate; 13. lifting mechanism; 14. movable column; 15. positioning tube; 16. limit tube; 17. through hole; 18. opening; 19. connecting tube. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] See also Figures 1 to 5 The utility model provides a technical solution: a hydrogeological drilling stratified water-stopping device, comprising a device body, the device body comprising a fixed tube 1, a drill bit 2 is rotatably installed at one end of the fixed tube 1, a fixed seat 6 is movably installed at one end of the fixed tube 1, a support tube 7 is movably installed at the other end of the fixed seat 6, a fixed disk 3 is installed between the support tube 7 and the fixed tube 1, a support disk 4 is movably installed on one side of the fixed disk 3, a ring seat 5 is fixedly installed between the support disk 4 and the fixed disk 3, an output shaft 8 is rotatably installed at one end of the support tube 7, a water pumping pipe 9 is fixedly installed at one end of the support tube 7, an annular groove 10 is opened on the inner wall of the ring seat 5, a convex ring 11 is movably installed inside the annular groove 10, and the convex ring 11 is fixedly installed at one end of the fixed tube 1 and the support tube 7, respectively. Later, a differential motor is installed at one end of the support tube 7, the differential motor drives the output shaft 8 and the drill bit 2 to rotate, and the rotation of the drill bit 2 drives the support tube 7 and the fixed tube 1 to move downward for drilling.

[0022] In this embodiment, a separation plate 12 is welded between the ring seats 5, and a lifting mechanism 13 is fixedly installed on the top and bottom of the separation plate 12, respectively. A movable column 14 is installed on the lifting mechanism 13, and one end of the movable column 14 is fixedly installed on the fixed plate 3, respectively. A limiting assembly is installed between the fixed plate 3 and the supporting plate 4, and the limiting assembly includes a positioning tube 15, and the positioning tube 15 is fixedly installed on the supporting plate 4. An opening 18 is respectively opened between the positioning tube 15 and the supporting plate 4, and a limiting tube 16 is movably installed inside the positioning tube 15. The limiting tube 16 is opened with a through hole 17, and a connecting tube 19 is fixedly installed on the supporting plate 4, and the connecting tube 19 is respectively matched with one end of the water pumping pipe 9, and one end of the output shaft 8 is fixed on the drill bit 2. The lifting mechanism 13 is an electric push rod, and the electric push rod drives the supporting plate 4 and the fixed plate 3 to move toward the fixed seat 6, so as to squeeze the ring seat 5, and the ring seat 5 is squeezed and deformed to seal the drill hole.

[0023] When the device is in use, a differential motor is installed at one end of an output shaft 8, the differential motor drives the output shaft 8 to rotate, the output shaft 8 drives the drill bit 2 to rotate at the bottom of the fixed pipe 1, the rotation of the drill bit 2 drives the fixed pipe 1 and the support pipe 7 to move downward for drilling, after drilling to the depth of the water layer, the water layer loses pressure and gushes upward, after gushing, the lifting mechanism 13 is quickly started, the lifting mechanism 13 drives the fixed disk 3 and the support disk 4 to squeeze through the movable column 14, after the squeezing between the support disk 4 and the fixed disk 3, the ring seat 5 is deformed and protrudes outward, the protruding ring seat 5 forms an arc and contacts the inner wall of the borehole, the ring seat 5 is made of rubber, the borehole is sealed by the deformation of the ring seat 5, the stratification of the water layer is achieved after sealing, and the support disk 4 or the fixed disk 3 is moved upward. The movement between the limiting tube 16 and the positioning tube 15 generates suction through the cooperation of the pumping tube 9 and the connecting tube 19. One end of the connecting tube 19 contacts the inner wall of the supporting plate 4 to form a vacuum chamber. The water enters the limiting tube 16 from the opening 18 through the suction of the connecting tube 19, and enters the connecting tube 19 through the limiting tube 16 to be extracted. When it is necessary to compress the water layer space in the later stage, the lifting mechanism 13 is started to drive the supporting plate 4 to move toward the fixed seat 6 again, and the space between the two ring seats 5 is moved and adjusted. When the space distance is adjusted, the water layer space is compressed, and the compression completes the sealing of water layers at different depths. The other two ring seats 5 cooperate to perform double sealing on the water to avoid gushing in the later stage.

[0024] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hydrogeological drilling layered water stopping device, comprising a device body, characterized in that: The device body comprises a fixed tube (1), a drill bit (2) is rotatably mounted on one end of the fixed tube (1), a fixed seat (6) is movably mounted on one end of the fixed tube (1), a support tube (7) is movably mounted on the other end of the fixed seat (6), a fixed disk (3) is mounted between the support tube (7) and the fixed tube (1), a support disk (4) is movably mounted on one side of the fixed disk (3), a ring seat (5) is fixedly mounted between the support disk (4) and the fixed disk (3), an output shaft (8) is rotatably mounted on one end of the support tube (7), and a water pumping pipe (9) is fixedly mounted on one end of the support tube (7).

2. A hydrogeological drilling layered water stopping device according to claim 1, characterized in that: An annular groove (10) is formed on the inner wall of the annular seat (5), a convex ring (11) is movably mounted inside the annular groove (10), and the convex ring (11) is fixedly mounted on one end of the fixed tube (1) and the supporting tube (7), respectively.

3. A hydrogeological drilling layered water stopping device according to claim 1, characterized in that: A separation plate (12) is welded between the ring seats (5), and a lifting mechanism (13) is fixedly installed on the top and bottom of the separation plate (12), and a movable column (14) is installed on the lifting mechanism (13), and one end of the movable column (14) is fixedly installed on the fixed plate (3).

4. A hydrogeological drilling layered water stopping device according to claim 1, characterized in that: A limiting assembly is installed between the fixed plate (3) and the supporting plate (4), wherein the limiting assembly comprises a positioning tube (15), and the positioning tube (15) is fixedly installed on the supporting plate (4).

5. A hydrogeological drilling layered water stopping device according to claim 4, characterized in that: An opening (18) is respectively provided between the positioning tube (15) and the supporting plate (4), a limiting tube (16) is movably installed inside the positioning tube (15), and a through hole (17) is provided on the limiting tube (16).

6. A hydrogeological drilling layered water stopping device according to claim 1, characterized in that: A connecting pipe (19) is fixedly mounted on the support plate (4), and the connecting pipe (19) is respectively matched with one end of the water pumping pipe (9), and one end of the output shaft (8) is fixed on the drill bit (2).

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