Method for removing residual loam core on drill bit of water drill

Abstract

The invention discloses a method for removing a residual loam core of a water drill bit. And the driving unit controls the drill bit to rotate forwards and then controls the drill bit to rotate backwards, and the process is repeated for multiple times, so that the mud core generates rotary displacement relative to the drill bit in the process until the mud core is separated from the drill bit. The mud core is quickly removed by controlling the rotation of the drill bit, and the removal mode is faster, simpler and more efficient.

Description

Technical Field

[0001] The invention relates to the technical field of water drills, in particular to a method for removing residual mud cores of a water drill bit. Background Art

[0002] A water drill is an electric tool for drilling with a water source. Its drill bit is usually a hollow cylindrical structure with an open outer end. After operation, a mud core that matches the shape of the drill bit's inner cavity will remain in the drill bit. If it is not removed, it will affect the next normal operation. Earlier, operators usually used a hammer to hit the drill bit to slowly remove the cement core from the drill bit. This method is time-consuming, labor-intensive and easily damages the drill bit surface.

[0003] To this end, a variety of mud core removal methods have been proposed in the prior art, such as the patent document CN213144384U, which discloses an easily replaceable multi-section split water drill bit, in which the drill bit is designed to be multi-section split, and the split drill bit is used to facilitate the removal of the mud core (concrete mud). However, this method is relatively inconvenient in actual operation.

[0004] Another example is the patent document CN216181710U which discloses a water drill bit with a receiving device, which is used to remove mud cores (cement blocks). This method has a relatively complex structure, and the setting of the receiving device (especially the receiving rod) will directly affect the working efficiency of the water drill and increase the difficulty of drilling.

[0005] Therefore, there is still no more reasonable way to remove the residual mud core of the water drill bit, and further improvement is urgently needed. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a method for removing residual mud cores from a water drill bit, which controls the drill bit to accelerate and brake in the forward direction, accelerate and brake in the reverse direction, and run reciprocatingly in sequence. The inertia of the cement core itself is utilized, and the cement core generates a rotational displacement relative to the drill bit during acceleration and braking. The gravity of the cement core itself causes the cement core and the drill bit to move downward while generating a rotational displacement relative to the drill bit, thereby quickly removing the cement core.

[0007] In order to solve the above technical problems, the present invention is solved by the following technical solutions: A method for removing residual mud cores from a water drill bit, wherein a driving unit controls the drill bit to rotate forward and then reversely, and repeats this process several times, so that the mud core generates a rotational displacement relative to the drill bit during the process until it is separated from the drill bit.

[0008] In the above technical solution, preferably, the driving unit controls the drill bit to rotate forward and then brakes, and then controls the drill bit to reverse and then brakes, and repeats this process several times so that the mud core produces a rotational displacement relative to the drill bit until it disengages from the drill bit.

[0009] In the above technical solution, preferably, the driving unit controls the drill bit to accelerate forward and then brake, and then controls the drill bit to accelerate reversely and then brake, and repeats this process several times so that the mud core produces a rotational displacement relative to the drill bit until it is detached from the drill bit.

[0010] In the above technical solution, preferably, the driving unit controls the drill bit to accelerate forward for 30-50ms, then brake for 20-40ms, then reverse and accelerate for 30-50ms, then brake for 20-40ms, and then switch to forward and accelerate for 30-50ms, and repeat this several times so that the mud core produces a rotational displacement relative to the drill bit in this process until it is detached from the drill bit.

[0011] In the above technical solution, preferably, the drill button is long pressed to enter the core removal mode, the motor operation enable flag is set and the motor is not running at this time, and when the button is not released, the drive unit controls the drill bit to accelerate, brake, accelerate and brake in the forward direction, and repeat this several times.

[0012] In the above technical solution, preferably, after entering the core removal mode or when the motor is started in this mode, the controller starts to record the core removal working time, and when the core removal working time is greater than the set value, the machine is stopped and the motor operation enable flag is cleared.

[0013] In the above technical solution, preferably, the core removal mode is entered by pressing and holding the rhinestone button for ≥1 second.

[0014] In the above technical solution, preferably, short pressing the water drill button for less than 1 second is the normal working mode, and short pressing the water drill button for less than 1 second starts or stops the motor.

[0015] The beneficial effects of the present invention are: The present invention controls the rotation of the drill bit to quickly remove the mud core, and the removal method is faster, simpler and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the working process of Example 1 of the present invention.

[0017] Figure 2 This is a schematic diagram of the working process of Example 2 of the present invention.

[0018] Figure 3 This is a schematic diagram of the working process of Example 3 of the present invention.

[0019] Figure 4 This is a schematic diagram of the working process of Example 4 of the present invention. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Example 1

[0021] See also Figure 1 As shown, a method for removing residual mud cores from a water drill bit is provided. After the water drill is powered on, an operator controls the tool to work in an operation mode or a core removal mode by pressing a button. In the operation mode, a short press of the button is used to start or stop the tool for normal drilling operations, such as short pressing the water drill button for less than 1s, or for more than 40ms and less than 1s.

[0022] Keep the drill bit opening downward, press and hold the button for ≥1s to enter the core removal mode, the motor operation enable flag is set and the motor is not running at this time, when the button is not released, the drive unit controls the drill bit to accelerate forward and then brake, and then controls the drill bit to accelerate reversely, and then brake, and repeats this several times. Using the inertia of the cement core itself, the cement core produces a rotational displacement relative to the drill bit during the forward and reverse switching process. The gravity of the cement core itself causes the cement core and the drill bit to move downward while producing a rotational displacement relative to the drill bit, thereby quickly removing the cement core.

[0023] In this embodiment, the driving unit controls the drill to accelerate forward for 30-50ms, then brake for 20-40ms, then reverse and accelerate for 30-50ms, then brake for 20-40ms, then turn to forward and accelerate for 30-50ms, and repeat this several times.

[0024] As one implementation method, the drill bit is controlled to accelerate forward for 40ms and brake for 30ms, and the drill bit is controlled to accelerate reverse for 40ms and brake for 30ms, and this is repeated several times.

[0025] As one embodiment, the driving unit is a motor, which controls the forward and reverse switching operation of the drill bit through a forward and reverse circuit.

[0026] As one embodiment, the driving unit may be a forward and reverse motor on the water drill that is connected to the drill bit for transmission, and the start or stop is controlled by the water drill button, such as replacing the existing water drill motor with a forward and reverse motor.

[0027] After entering the core removal mode or when the motor starts in this mode, the controller starts to record the core removal working time, and when the core removal working time is greater than the set value, it stops and clears the motor operation enable flag, and exits the core removal mode when the timeout is exceeded, so as to avoid high temperature of the motor and controller and protect the gear structure. As one implementation method, the set value can be set to 90s. Example 2

[0028] See also Figure 2As shown, a method for removing residual mud core from a water drill bit is provided. The opening of the water drill bit is kept downward, and a driving unit controls the drill bit to rotate forward and then reverse, and this is repeated several times. The inertia of the cement core itself is utilized, and during the forward and reverse switching process, the cement core generates a rotational displacement relative to the drill bit. The gravity of the cement core itself causes the cement core and the drill bit to move downward while generating a rotational displacement relative to the drill bit, thereby quickly removing the cement core.

[0029] In this embodiment, the driving unit specifically controls the drill bit to rotate forward for 30-50ms, and then controls the drill bit to rotate reversely for 30-50ms, and repeats this process several times.

[0030] As one implementation method, the drill bit is controlled to rotate forward for 40 ms, and then controlled to rotate reversely for 40 ms, and this is repeated several times.

[0031] As one embodiment, the driving unit is a motor, which controls the forward and reverse switching operation of the drill bit through a forward and reverse circuit.

[0032] As one embodiment, the driving unit may be a forward and reverse motor on the water drill that is connected to the drill bit for transmission, and the start or stop is controlled by the water drill button, such as replacing the existing water drill motor with a forward and reverse motor. Example 3

[0033] See also Figure 3 As shown, a method for removing residual mud core from a water drill bit is provided. The water drill bit opening is kept downward, and a driving unit controls the drill bit to rotate forward and then brakes, and then controls the drill bit to reverse and then brakes, and this is repeated several times. The inertia of the cement core itself is utilized, and during the forward and reverse switching process, the cement core generates a rotational displacement relative to the drill bit. The gravity of the cement core itself causes the cement core and the drill bit to move downward while generating a rotational displacement relative to the drill bit, thereby quickly removing the cement core.

[0034] In this embodiment, the driving unit controls the drill to rotate forward for 30-50ms, then brake for 20-40ms, then reverse for 30-50ms, then brake for 20-40ms, and then rotate forward for 30-50ms, and repeat this process several times.

[0035] As one implementation method, the drill bit is controlled to rotate forward for 40ms, brake for 30ms, and the drill bit is controlled to rotate reversely for 40ms, brake for 30ms, and this is repeated several times.

[0036] As one embodiment, the driving unit is a motor, which controls the forward and reverse switching operation of the drill bit through a forward and reverse circuit.

[0037] As one embodiment, the driving unit may be a forward and reverse motor on the water drill that is connected to the drill bit for transmission, and the start or stop is controlled by the water drill button, such as replacing the existing water drill motor with a forward and reverse motor. Example 4

[0038] As shown, a method for removing residual mud core from a water drill bit is provided. The water drill bit opening is kept downward, and a driving unit controls the drill bit to accelerate forward and then brake, and then controls the drill bit to accelerate reversely and then brake, and this is repeated several times. The inertia of the cement core itself is utilized, and during the forward and reverse switching process, the cement core generates a rotational displacement relative to the drill bit. The gravity of the cement core itself causes the cement core and the drill bit to move downward while generating a rotational displacement relative to the drill bit, thereby quickly removing the cement core.

[0039] In this embodiment, the driving unit controls the drill to accelerate forward for 30-50ms, then brake for 20-40ms, then reverse and accelerate for 30-50ms, then brake for 20-40ms, then turn to forward and accelerate for 30-50ms, and repeat this several times.

[0040] As one implementation method, the drill bit is controlled to accelerate forward for 40ms and brake for 30ms, and the drill bit is controlled to accelerate reverse for 40ms and brake for 30ms, and this is repeated several times.

[0041] As one embodiment, the driving unit is a motor, which controls the forward and reverse switching operation of the drill bit through a forward and reverse circuit.

[0042] As one embodiment, the driving unit may be a forward and reverse motor on the water drill that is connected to the drill bit for transmission, and the start or stop is controlled by the water drill button, such as replacing the existing water drill motor with a forward and reverse motor.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for removing residual mud core from a water drill bit, characterized in that: The driving unit controls the drill bit to rotate forward and then reverse, and repeats this process several times, so that the mud core generates a rotational displacement relative to the drill bit in the process until it is separated from the drill bit.

2. The method for removing residual mud core of a water drill bit according to claim 1, characterized in that: The driving unit controls the drill bit to rotate forward and then brakes, and then controls the drill bit to rotate reversely and then brakes, and repeats this process several times so that the mud core generates a rotational displacement relative to the drill bit until it is disengaged from the drill bit.

3. The method for removing residual mud core of a water drill bit according to claim 1, characterized in that: The driving unit controls the drill bit to accelerate forward and then brake, and then controls the drill bit to accelerate reverse and then brake, and repeats this process several times so that the mud core generates a rotational displacement relative to the drill bit until it is disengaged from the drill bit.

4. The method for removing residual mud core of a water drill bit according to claim 3, characterized in that: The drive unit controls the drill bit to accelerate forward for 30-50ms, then brake for 20-40ms, then reverse and accelerate for 30-50ms, then brake for 20-40ms, and then switch to forward and accelerate for 30-50ms, and repeat this process several times so that the mud core produces rotational displacement relative to the drill bit until it is detached from the drill bit.

5. A method for removing residual mud core of a water drill bit according to any one of claims 1 to 4, characterized in that: Long press the drill button to enter the core removal mode. The motor operation enable flag is set and the motor is not running at this time. When the button is not released, the drive unit controls the drill to accelerate, brake, accelerate and brake in the forward direction, and repeat this process several times.

6. The method for removing residual mud core of a water drill bit according to claim 5, characterized in that: After entering the core removal mode or when the motor starts in this mode, the controller starts to record the core removal working time, and when the core removal working time is greater than the set value, it stops and clears the motor operation enable flag.

7. The method for removing residual mud core of a water drill bit according to claim 5, characterized in that: Press and hold the rhinestone button for ≥1 second to enter the core removal mode.

8. The method for removing residual mud core of a water drill bit according to claim 5, characterized in that: Short press the water drill button for less than 1 second to enter the normal working mode, short press the water drill button for less than 1 second to start or stop the motor.

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