Filter fixing device in in-situ leaching uranium mining mine drilling well

Abstract

The utility model belongs to the field of in-situ leaching uranium mining, and particularly relates to a filter fixing device in a drilling well of an in-situ leaching uranium mining mine. The filter fixing device in the in-situ leaching uranium mining mine drilling well comprises an annular threaded pressure ring, a limiting ring is arranged below the threaded pressure ring, and a supporting reset assembly is arranged between the threaded pressure ring and the limiting ring. The novel filter has the remarkable effects that (1) the threaded pressure ring rotates and then moves downwards to provide extrusion force for the movable ring, so that the pressure-bearing fixed support arm is driven to rotate and stretch outwards, penetrates through an outlet of the fixed support arm on the guide pipe and then is in contact with and extrudes a drilling sleeve, the filter is fixed, and the service life of the filter is prolonged; and the problem that the filter floats upwards after the expansion rubber is damaged is effectively solved. And (2) the device can be fixed and disassembled through the extrusion force caused by rotation of the threaded pressure ring and the elastic force of the reset spring, so that the mounting and lifting requirements of the filter in the well are met.

Description

Technical Field

[0001] This invention belongs to the field of in-situ leaching uranium mining, specifically relating to a filter fixing device inside a borehole in an in-situ leaching uranium mine. Background Technology

[0002] The installation and fixation of the filter in the borehole is a key part of the drilling construction in in-situ leaching uranium mines. When the filter is lowered to the designed installation position, it needs to be fixed to prevent it from floating and to keep the filter position unchanged.

[0003] The current method of fixing the well filter is with expanded rubber. However, after long-term use, this material will be damaged and fall off, causing the well filter to float up, which seriously affects the filtration effect and makes the borehole unusable.

[0004] Therefore, a filter fixing device is needed in the borehole of a uranium leaching mine. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a fixing device for an in-well filter in uranium leaching mines, thus solving the problem of the filter floating due to damage to the expanded rubber.

[0006] This invention is achieved as follows: a filter fixing device inside a borehole in a ground leaching uranium mine, comprising an annular threaded pressure ring, a limiting ring below the threaded pressure ring, and a support and reset assembly between the threaded pressure ring and the limiting ring.

[0007] As described above, in a borehole filter fixing device for uranium leaching mining, a groove is provided on the top surface of the threaded pressure ring.

[0008] As described above, the filter fixing device in the borehole of a uranium leaching mine includes a support and reset assembly comprising a movable ring, a reset spring, a pressure-bearing fixing arm, and a fixing pin. The movable ring is fixedly connected to a threaded pressure ring, and the reset spring is disposed between the movable ring and a limiting ring. A pressure-bearing fixing assembly consisting of a pressure-bearing fixing arm and a fixing pin is also disposed between the movable ring and the limiting ring.

[0009] As described above, in the borehole filter fixing device for in-situ leaching uranium mining, the pressure-bearing fixing arm of the pressure-bearing fixing component is connected to the movable ring shaft, and the pressure-bearing fixing arm is connected to the limiting ring through a fixing pin.

[0010] As described above, in a uranium leaching mine borehole filter fixing device, the outer wall of the threaded pressure ring is provided with threads, which match the female thread on the inner wall of the inlet pipe.

[0011] As described above, a filter fixing device for boreholes in uranium leaching mines includes three return springs, which are evenly arranged circumferentially along the threaded pressure ring.

[0012] The filter fixing device in the borehole of a uranium leaching mine as described above includes three sets of pressure-bearing fixing components, which are evenly arranged along the circumference of the limiting ring.

[0013] The filter fixing device in the borehole of a uranium leaching mine as described above, wherein the return spring and the pressure-bearing fixing component are arranged alternately.

[0014] As described above, in a borehole filter fixing device for uranium leaching mining, a notch is provided on the inner wall of the inlet pipe at a position that matches the pressure-bearing fixing component, allowing the pressure-bearing fixing component to extend outwards.

[0015] The above-described fixing device for an in-hole filter in a uranium leaching mine includes: a movable ring with an outer diameter of 85mm, an inner diameter of 58mm, and a height of 20mm; a limiting ring with an outer diameter of 85mm, an inner diameter of 58mm, and a height of 20mm; a pressure-bearing fixing arm consisting of a large arm and a small arm, each 40mm in length; a groove with a diameter of 10mm and a width of 6mm; a threaded pressure ring with an outer diameter of 90mm, an inner diameter of 58mm, and a height of 20mm; and a single return spring with a length of 80mm.

[0016] The significant effects of this invention are: (1) This invention uses the downward displacement of the threaded pressure ring after rotation to give the movable ring a squeezing force, thereby driving the pressure-bearing fixed support arm to rotate and extend outward. After passing through the fixed support arm outlet on the lead pipe, it contacts and squeezes the drilled sleeve to achieve the fixation of the filter, effectively solving the problem of the filter floating after the expansion rubber is damaged.

[0017] (2) This new device can be fixed and disassembled by the squeezing force caused by the rotation of the threaded pressure ring and the elastic force of the return spring, thereby satisfying the installation and lifting of the well filter. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of the installation of a filter fixing device inside a borehole in a uranium leaching mine according to the present invention;

[0019] Figure 2 This is a cross-sectional view of a filter fixing device inside a borehole in a uranium leaching mine according to the present invention;

[0020] In the diagram: 1. Threaded pressure ring; 2. "I" groove; 3. Movable ring; 4. Limiting ring; 5. Return spring; 6. Pressure-bearing fixed support arm; 7. Fixing pin; 8. Female thread on the inner wall of the lead pipe; 9. Fixed support arm outlet. Detailed Implementation

[0021] A filter fixing device for boreholes in in-situ leaching uranium mines, comprising the following:

[0022] (1) The three small arms of the pressure-bearing fixed support arm 6 are connected in the groove of the interface of the limiting ring 4 by the fixing pin 7, with an angle of 120°.

[0023] (2) The three large arms of the pressure-bearing fixed support arm 6 are connected in the groove of the lower interface of the movable ring 3 by the fixing pin 7, with an angle of 120°.

[0024] (3) Connect the three upper arms and three lower arms of the pressure-bearing fixed support arm 6 with fixing pins 7 respectively;

[0025] (4) Weld the upper and lower ends of the return spring 5 to the lower interface of the movable ring 3 and the upper interface of the limit ring 4 respectively;

[0026] (5) A groove 2 is machined on the interface of the threaded pressure ring 1, and a male thread is machined on its outer wall;

[0027] (6) Machining female thread 8 on the inner wall of the upper end of the filter pipe, and machining three fixed support arm outlets 9 at the corresponding positions with an angle of 120°;

[0028] (7) Install the limit ring 4, movable ring 3, pressure-bearing fixed support arm 6 and return spring 5 into the guide tube as a whole, and place it on the upper end of the step on the inner wall of the guide tube. The three pressure-bearing fixed support arms 6 correspond to the positions of the three fixed support arm outlets 9 of the guide tube.

[0029] (8) Match the male thread on the outer wall of the threaded pressure ring 1 with the female thread 8 on the inner wall of the lead pipe, and rotate it through the "I" groove so that the threaded pressure ring 1 is placed above the movable ring 3. The installation of the device is completed.

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] A filter fixing device for boreholes in in-situ leaching uranium mines is applicable to the installation and fixing of filters inside boreholes in in-situ leaching uranium mines. The installation process is roughly as follows:

[0032] Step 1: Install the device into the inlet pipe and connect the inlet pipe to the filter;

[0033] Step 2: Using a Ф40mm drill rod and a lifting tool, lower the device and filter into the designed installation position inside the borehole;

[0034] Step 3: Remove the Ф40mm drill rod, replace the special tool, and lower the drill rod again to the top of the fixing device. Rotate the drill rod to make the special tool enter the "I" groove above the threaded pressure ring.

[0035] Step 4: Rotate the drill rod clockwise to cause the threaded pressure ring to rotate and move downwards;

[0036] Step 5: When the rotational force increases significantly, it indicates that the pressure-bearing fixed support arm has passed the outlet and is in contact with the inner wall of the drill casing; continue to rotate the drill rod slightly to make the pressure-bearing fixed support arm apply extrusion force to the inner wall of the drill casing, and then stop rotating the drill rod.

[0037] Step 6: Pull the Ф40mm drill pipe upwards; the installation and fixing of the in-well filter is complete.

Claims

1. A filter fixing device inside a borehole in a uranium leaching mine, characterized in that: It includes an annular threaded pressure ring (1), a limiting ring (4) is arranged below the threaded pressure ring (1), and a support and reset component is arranged between the threaded pressure ring (1) and the limiting ring (4).

2. The filter fixing device in the borehole of a uranium leaching mine as described in claim 1, characterized in that: A "one"-character groove (2) is arranged on the top surface of the threaded pressure ring (1).

3. The filter fixing device in the borehole of a uranium leaching mine as described in claim 2, characterized in that: The support and reset component includes a movable ring (3), a reset spring (5), a pressure-bearing fixed support arm (6), and a fixed pin (7). The movable ring (3) is fixedly connected to the threaded pressure ring (1), the reset spring (5) is arranged between the movable ring (3) and the limiting ring (4), and a pressure-bearing fixed component composed of the pressure-bearing fixed support arm (6) and the fixed pin (7) is also arranged between the movable ring (3) and the limiting ring (4).

4. The filter fixing device in the borehole of a uranium leaching mine as described in claim 3, characterized in that: The pressure-bearing fixed support arm (6) of the pressure-bearing fixed component is axially connected to the movable ring (3), and the pressure-bearing fixed support arm (6) is connected to the limiting ring (4) through the fixed pin (7).

5. The filter fixing device in a borehole of a uranium leaching mine as described in claim 4, characterized in that: Threads are arranged on the outer side wall of the threaded pressure ring (1), and the threads are matched with the female thread (8) on the inner wall of the guiding pipe.

6. The filter fixing device in a borehole of a uranium leaching mine as described in claim 5, characterized in that: Three reset springs (5) are arranged and are evenly arranged circumferentially along the threaded pressure ring (1).

7. The filter fixing device in a borehole of a uranium leaching mine as described in claim 6, characterized in that: Three groups of pressure-bearing fixed components are arranged and are evenly arranged circumferentially along the limiting ring (4).

8. The filter fixing device in the borehole of a uranium leaching mine as described in claim 7, characterized in that: The reset spring (5) and the pressure-bearing fixed component are arranged in a staggered manner.

9. The filter fixing device in a borehole of a uranium leaching mine as described in claim 8, characterized in that: A notch is arranged at a position on the female thread (8) on the inner wall of the guiding pipe that is matched with the pressure-bearing fixed component for a part of the structure of the pressure-bearing fixed component to extend out.

10. The filter fixing device in a borehole of a uranium leaching mine as described in claim 9, characterized in that: The outer diameter of the movable ring (3) is 85 mm, the inner diameter is 58 mm, and the height is 20 mm; the outer diameter of the limiting ring (4) is 85 mm, the inner diameter is 58 mm, and the height is 20 mm; the pressure-bearing fixed support arm (6) includes a large arm and a small arm, and the lengths are both 40 mm; the length of the "one"-character groove (2) is

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