A buried hole drilling rock debris collecting device

Abstract

The application discloses a buried hole drilling rock debris collecting device, which comprises an open upper-end rectangular box body, a vibrating screen, a conveying belt and a buried pipe, the rectangular box body is installed at a buried hole, the buried pipe is sleeved on the outer side of a drill rod and is connected to the buried hole at the lower end, the buried pipe is sealed through the bottom of the rectangular box body, the vibrating screen is obliquely installed in the rectangular box body, the buried pipe is movably arranged through the vibrating screen, the conveying belt is installed at the oblique bottom end of the vibrating screen, two rows of desilting holes are arranged at the bottom of the rectangular box body, the desilting holes are arranged below the vibrating screen and are communicated with a drainage ditch on the ground. In the application, the coarse-grained gravel falls into the conveying belt and is sent into the box body far away from the drilling hole, so that the rock debris is easily collected; after the drilling is completed, the conveying belt is reversed to carry back the gravel for backfilling; the silt falls into the box body and is timely discharged through the desilting holes, the vibrating screen is prevented from being blocked to improve the desilting efficiency, and the buried pipe plays a conveying role to flow the rock debris and silt generated by the drilling into the vibrating screen.

Description

Technical Field

[0001] This invention belongs to the technical field of ground source heat pump systems and relates to a device for collecting drilling cuttings from buried boreholes. Background Technology

[0002] Currently, in ground source heat pump systems, the collection of drilling cuttings during buried borehole drilling is inconsistent, and there is a lack of effective cuttings collection devices. During drilling operations, the drilling cuttings inside the borehole are ejected from around the borehole by the drilling rig. On the one hand, the cuttings and the discharged water are not easily separated, and on the other hand, it is difficult to collect the cuttings and backfill the buried borehole. Relying solely on the drilling rig's baffles is insufficient to completely collect the discharged cuttings, and the amount of cuttings to be cleaned up is substantial. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a buried borehole drilling cuttings collection device to solve the technical problems existing in the prior art.

[0004] The technical solution adopted in this invention is as follows: a buried borehole cuttings collection device, comprising a rectangular box with an open top, a vibrating screen, a conveyor belt, and a buried pipe. The rectangular box is installed at the buried borehole. The buried pipe is sleeved on the outside of the drill rod and its lower end is connected to the buried borehole. The buried pipe passes through the bottom of the rectangular box in a sealed manner. The vibrating screen is installed at an angle inside the rectangular box. The buried pipe moves through the vibrating screen. A conveyor belt is installed at the bottom of the inclined vibrating screen. Two rows of drainage holes are provided at the bottom of the rectangular box. The drainage holes are located below the vibrating screen and are connected to the drainage ditch on the ground.

[0005] Preferably, a splash guard is installed above the buried pipe. The splash guard has a horn-shaped structure, is fitted over the drill rod, and its upper end is fixedly connected to the lower end of the drill housing.

[0006] Preferably, the splash guard includes multiple fan-shaped blocks, a sleeve, and a flexible, telescopic rubber sealing sheet. The multiple fan-shaped blocks are evenly distributed circumferentially at the lower end of the sleeve and are hinged to the sleeve. The rubber sealing sheet is fixedly connected on both sides to the gap between two adjacent fan-shaped blocks.

[0007] Preferably, each of the aforementioned sector blocks is provided with a spring on its back, with both ends of the spring fixedly connected to the sector block and the support rod, and the support rod fixedly connected to the sleeve.

[0008] Preferably, baffles are installed on both sides of the lower side of the vibrating screen.

[0009] Preferably, the rectangular box has two maintenance plates hinged to its edges installed in the middle. The maintenance plates have support legs at the bottom of the side of the rectangular box. After the maintenance plates are rotated, they are placed inside the rectangular box and kept horizontal.

[0010] Preferably, the drainage ditch is replaced by a collection chamber, which is connected to the sludge pump through a pipe, and the baffle and the vibrating screen are kept in an elastic seal.

[0011] Preferably, the conveyor belt includes a belt, a drive roller, and a driven roller. Both ends of the drive roller and the driven roller are connected to the inside of the rectangular box through bearing seats. The belt is wound around the drive roller and the driven roller. One end of the shaft of the drive roller extends out of the side wall of the rectangular box and is connected to the drive motor. The drive motor is fixedly connected to the outer side wall of the rectangular box.

[0012] Preferably, the vibrating screen includes a screen plate, a second spring, and an electromagnetic vibrator. The screen plate is connected to the rectangular box via the second spring, and the electromagnetic vibrator is fixedly connected to the upper side wall of the rectangular box via a bracket, with the vibrating head of the electromagnetic vibrator connected to the bottom of the screen plate.

[0013] The beneficial effects of the present invention are as follows: Compared with the prior art, the present invention has the following advantages:

[0014] (1) The water and rock cuttings brought out by the drill rod are screened by the vibrating screen. The coarse gravel falls into the conveyor belt and is sent into the box far away from the borehole. It is easy to collect the rock cuttings. When backfilling is required after the borehole is completed, the conveyor belt is reversed to bring back the gravel for backfilling. The silt falls into the box and is discharged in time through the silt discharge hole. The silt is discharged by screening with a screen to avoid clogging the silt discharge hole and improve the silt discharge efficiency. The buried pipe plays a transportation role, and the rock cuttings and silt generated by the borehole flow into the vibrating screen.

[0015] (2) The splash guard can block the silt or gravel brought out by the drill rod under high speed, avoid splashing, improve the safety of operation, and the funnel-shaped structure makes it easy to collect and gather the flow, which falls onto the vibrating screen and improves the screening rate.

[0016] (3) The splash guard with a fan-shaped block structure is hinged to the sleeve and uses a flexible and extensible rubber sealing sheet. During the process of gravel and silt fluid impacting the splash guard, the hinge and flexible rubber act as a buffer fan-shaped block to avoid the splash guard being easily damaged under long-term stress concentration, thus improving the service life of the splash guard. Moreover, after buffering, the gravel will slow down and fall onto the screen without damaging the screen, which also improves the service life of the screen.

[0017] (4) Setting a spring on the back of the screening block can further play a buffering role, avoid the sector block opening too large and the bearing capacity of the rubber sealing sheet too large, reduce the connection requirements and thickness requirements of the rubber sealing sheet, and reduce manufacturing costs and assembly performance.

[0018] (6) Install baffles to block falling silt, prevent it from spreading too much, and improve the rapid flow and discharge.

[0019] (7) A hinged inspection plate is provided, which is convenient to flip and place in the rectangular box. Maintenance personnel stand on the inspection plate to replace drill rods or perform other maintenance work.

[0020] (8) By using a collection chamber and a sludge pump, the sludge can be quickly collected and discharged. In addition, during the process of rapid discharge by the sludge pump, a certain negative pressure will be generated below the vibrating screen and inside the collection chamber, which is more conducive to the sludge falling off the vibrating screen and being discharged into the collection chamber through the sludge discharge hole.

[0021] (9) The conveyor belt with an external drive motor protects the motor and improves its lifespan;

[0022] (10) Electromagnetic vibration mesh plate is used, which can screen quickly and stably, and the vibration frequency can be adjusted to achieve the best vibration effect. Attached Figure Description

[0023] Figure 1 A side view of the cuttings collection device for underground boreholes (drainage ditch).

[0024] Figure 2 A schematic diagram of a cuttings collection device (sludge removal pump) for underground borehole drilling.

[0025] Figure 3 A top view schematic diagram of a borehole cuttings collection device;

[0026] Figure 4 A schematic diagram of the splash guard structure for a borehole cuttings collection device. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1: As shown in the attached document Figure 1-4 As shown, a buried borehole cuttings collection device includes a rectangular box 1 with an open top, a vibrating screen 2, a conveyor belt 3, and a buried pipe 5. The rectangular box 1 is installed at the buried borehole 6. The buried pipe 5 is sleeved on the outside of the drill rod 11 and its lower end is connected to the buried borehole 6. The buried pipe 5 passes through the bottom of the rectangular box 1 in a sealed manner. The vibrating screen 2 is installed obliquely inside the rectangular box 1. The buried pipe 5 moves through the vibrating screen 2. The conveyor belt 3 is installed at the oblique bottom end of the vibrating screen 2. Two rows of drainage holes 7 are provided at the bottom of the rectangular box 1. The drainage holes 7 are located below the vibrating screen 2 and are connected to the drainage ditch 8 on the ground 4.

[0029] Preferably, a splash guard 9 is installed above the buried pipe 5. The splash guard 9 has a horn-shaped structure, is fitted over the drill rod 11, and its upper end is fixedly connected to the lower end of the drill housing 10.

[0030] Preferably, the splash guard 9 includes multiple fan-shaped blocks 12, a sleeve 13, and a flexible and telescopic rubber sealing sheet 14. The multiple fan-shaped blocks 12 are evenly distributed around the lower end of the sleeve 13 and are hinged to the sleeve 13. The rubber sealing sheet 14 is fixedly connected on both sides to the gap between two adjacent fan-shaped blocks 12.

[0031] Preferably, each of the aforementioned sector blocks 12 is provided with a spring 15 on its back side. The two ends of the spring 15 are fixedly connected to the sector block 12 and the support rod 16, respectively. The support rod 16 is fixedly connected to the sleeve 13.

[0032] Preferably, baffles 17 are installed on both sides of the lower side of the vibrating screen 2.

[0033] Preferably, the rectangular box 1 is equipped with two maintenance plates 18 hinged to its two edges in the middle. The maintenance plate 18 is provided with a support leg 19 at the bottom of the side of the rectangular box. After the maintenance plate 18 is rotated, it is placed inside the rectangular box 1 and kept horizontal.

[0034] Preferably, the drainage ditch 8 is replaced by a collection chamber 20, which is connected to the sludge pump 21 via a pipe, and the baffle 17 and the vibrating screen 3 are kept in an elastic seal.

[0035] Preferably, the conveyor belt 3 includes a belt 22, a drive roller 23, and a driven roller 24. Both ends of the drive roller 23 and the driven roller 24 are connected to the inside of the rectangular box 1 through bearing seats 25. The belt 22 is wound around the drive roller 23 and the driven roller 24. One end of the shaft of the drive roller 23 extends out of the side wall of the rectangular box 1 and is connected to the drive motor 26. The drive motor 26 is fixedly connected to the outer side wall of the rectangular box 1.

[0036] Preferably, the vibrating screen 2 includes a screen plate 27, a spring 28 and an electromagnetic vibrator 29. The screen plate 27 is connected to the rectangular box 1 by the spring 28. The electromagnetic vibrator 29 is fixedly connected to the upper side wall of the rectangular box 1 by the bracket 30 and the vibrating head of the electromagnetic vibrator 29 is connected to the bottom of the screen plate 27.

[0037] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of protection of the claims.

Claims

1. A device for collecting drilling cuttings from buried boreholes, characterized in that: The system includes a rectangular box (1) with an open top, a vibrating screen (2), a conveyor belt (3), and a buried pipe (5). The rectangular box (1) is installed at the buried hole (6). The buried pipe (5) is sleeved on the outside of the drill rod (11) and its lower end is connected to the buried hole (6). The buried pipe (5) passes through the bottom of the rectangular box (1) in a sealed manner. The vibrating screen (2) is installed at an angle inside the rectangular box (1). The buried pipe (5) moves through the vibrating screen (2). The conveyor belt (3) is installed at the angled bottom of the vibrating screen (2). Two rows of drainage holes (7) are provided at the bottom of the body (1). The drainage holes (7) are located below the vibrating screen (2) and are connected to the drainage ditch (8) of the ground (4). A splash guard (9) is installed above the buried pipe (5). The splash guard (9) is a trumpet-shaped structure, which is fitted over the drill rod (11) and its upper end is fixedly connected to the lower end of the drill housing (10). The splash guard (9) includes multiple fan-shaped blocks (12), a sleeve (13) and a flexible and telescopic rubber sealing sheet (14). The multiple fan-shaped blocks (12) are evenly distributed around the sleeve (13). The lower end of the screen (2) is hinged to the sleeve (13), and the rubber sealing sheet (14) is fixedly connected to the gap between two adjacent sector blocks (12) on both sides; each sector block (12) is provided with a spring (15) on the back, and the two ends of the spring (15) are fixedly connected to the sector block (12) and the support rod (16) respectively, and the support rod (16) is fixedly connected to the sleeve (13); baffles (17) are installed on both sides of the lower side of the vibrating screen (2); a maintenance plate (18) is installed in the middle of the rectangular box (1) with two edges hinged to it. (18) A support leg (19) is provided at the bottom of the rectangular box on one side. After the inspection plate (18) is rotated, it is placed in the rectangular box (1) and kept horizontal. The vibrating screen (2) includes a screen plate (27), a second spring (28) and an electromagnetic vibrator (29). The screen plate (27) is connected to the rectangular box (1) through the second spring (28). The electromagnetic vibrator (29) is fixedly connected to the upper side wall of the rectangular box (1) through the bracket (30) and the vibrating head of the electromagnetic vibrator (29) is connected to the bottom of the screen plate (27).

2. The buried borehole cuttings collection device according to claim 1, characterized in that: The conveyor belt (3) includes a belt (22), a drive roller (23) and a driven roller (24). Both ends of the drive roller (23) and the driven roller (24) are connected to the inside of the rectangular box (1) through bearing seats (25). The belt (22) is wound around the drive roller (23) and the driven roller (24). One end of the shaft of the drive roller (23) is sealed and extends out of the side wall of the rectangular box (1) and is connected to the drive motor (26). The drive motor (26) is fixedly connected to the outer side wall of the rectangular box (1).

3. The buried borehole drilling cuttings collection device according to claim 1, characterized in that: The drainage ditch (8) is replaced by a collection chamber (20), which is connected to the sludge pump (21) via a pipe. The baffle (17) and the vibrating screen (2) maintain an elastic seal.

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