CN117967221A - Rock debris collecting and weighing device and method - Google Patents

Abstract

The invention provides a rock debris collecting and weighing device and a method, wherein the rock debris collecting and weighing device comprises a fixing frame, a weighing sensor, a collecting control system and a collecting mechanism for collecting rock debris, the weighing sensor is fixedly arranged on the fixing frame, the collecting mechanism is rotationally connected with the weighing sensor, the weighing sensor is electrically connected with the collecting control system, the collecting mechanism comprises three bearing plates, the three bearing plates are in a radial shape and are uniformly distributed along the rotating direction of the collecting mechanism, and a V-shaped groove for collecting the rock debris is formed between two adjacent bearing plates. The invention is provided with three receiving plates which are 120 degrees away from each other, and different V-shaped grooves can respectively collect and dump rock debris, so that the turnover times of the collecting mechanism are reduced, the rock debris is completely collected in the turnover process, the loss of the rock debris is prevented, and the weighing accuracy of the rock debris is improved.

Description

Rock debris collecting and weighing device and method

Technical Field

The invention belongs to the technical field of petroleum drilling, and particularly relates to a rock debris collecting and weighing device and a rock debris collecting and weighing method.

Background

Under different drilling operation environments, the method for removing the rock cuttings in the well is very important for preventing underground complex conditions such as mud bags, sealing, stuck drilling and collapse of the well wall. When drilling teams perform more complex operations such as large displacement wells, highly deviated wells, horizontal or clustered wells, and deep wells, the well bore is not clean, resulting in increased operational risk and cost, and poor well bore stability. The drilling crew reduces non-production time by increasing the well bore cleaning rate and the downhole circulation frequency, thereby improving drilling efficiency and shortening drilling time.

At present, surface monitoring cuttings is a common method of determining borehole cleanliness and whether the borehole wall is stable. The ground monitoring cuttings require that the cuttings be collected and their weight recorded.

In the prior art, the collection mechanism for collecting rock cuttings is not clean in terms of the rock cuttings being tipped over, and particularly in terms of high-density, high-viscosity wells, the efficiency of the collection mechanism in tipping over the rock cuttings is less than 50%. The existing collection mechanism usually adopts a reciprocating type turnover mode, the collection mechanism collects rock fragments in real time from an outlet of the vibrating screen, the collection mechanism is turned over after the time weighing, the rock fragments on the collection mechanism are removed, and then the horizontal position is returned to collect the rock fragments. The frequency of the turnover of the collecting mechanism with the structure is too high, and partial rock scraps are easy to leak in the weighing process, so that the accuracy is affected.

Disclosure of Invention

In view of the technical problems described above, the present invention aims to provide a rock debris collecting and weighing device capable of reducing the number of times of turning of a collecting mechanism and improving the accuracy of measurement of the rock debris return displacement.

The invention also provides a rock debris collecting and weighing method, which can reduce the turnover times of the collecting mechanism and improve the accuracy of measuring the rock debris return displacement.

According to the invention, the rock debris collecting and weighing device comprises a fixing frame, a weighing sensor, a collecting control system and a collecting mechanism for collecting rock debris, wherein the weighing sensor is fixedly arranged on the fixing frame, the collecting mechanism is rotationally connected with the weighing sensor, the weighing sensor is electrically connected with the collecting control system, the collecting mechanism comprises three receiving plates, the three receiving plates are radial and uniformly distributed along the rotating direction of the collecting mechanism, and a V-shaped groove for collecting the rock debris is formed between two adjacent receiving plates.

In a specific embodiment, the collecting mechanism comprises two V-shaped plates welded to each other, one of the two V-shaped plates being formed by one of the receiving plates of the collecting mechanism, and the remaining two sides of the two V-shaped plates being formed by the remaining two receiving plates of the collecting mechanism, respectively.

In a specific embodiment, the rock debris collecting and weighing device further comprises a motor, a rotating shaft is arranged at the rotating axis of the collecting mechanism, an output shaft of the motor is connected with the rotating shaft through a coupler, a shell of the motor is fixedly connected with a probe of the weighing sensor, and the probe of the weighing sensor is rotatably connected with the coupler through a hanging seat.

In a specific embodiment, a position sensor for monitoring the rotation angle of the output shaft of the motor is arranged on the motor, and the position sensor is electrically connected with the acquisition control system.

In a specific embodiment, the rock debris collecting and weighing device further comprises a limiting block for limiting the overturning angle of the collecting mechanism, and the limiting block is fixedly connected with the probe of the weighing sensor.

In a specific embodiment, the stopper is configured such that when the collection mechanism is turned to a limit angle, an opening of one of the V-grooves is directed directly above.

In a specific embodiment, a spray mechanism for flushing the receiving plate is provided on the mount.

In a specific embodiment, the spraying mechanism comprises a water pump, a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are connected with an outlet of the water pump, the first pipeline and the second pipeline are symmetrically arranged by taking a vertical plane where a rotation axis of the collecting mechanism is located as a symmetry plane, an axis of the pipeline is parallel to the rotation axis of the collecting mechanism, and a plurality of nozzles are arranged on the first pipeline and the second pipeline.

In a specific embodiment, a first pneumatic valve is arranged between the water pump and the first pipeline, a second pneumatic valve is arranged between the water pump and the second pipeline, and the first pneumatic valve and the second pneumatic valve are connected with the acquisition control system.

According to the invention, there is also provided a rock debris collecting and weighing method, using the rock debris collecting and weighing device provided by the invention, comprising the following steps:

s1, turning over the collecting mechanism to enable one V-shaped groove to face upwards;

s2, collecting rock debris by the upward V-shaped groove, and monitoring the weight of the rock debris by the weighing sensor;

s3, turning the collecting mechanism by 120 degrees to enable the other V-shaped groove to face upwards, and dumping rock scraps in the original V-shaped groove;

S4, cleaning the rock scraps remained on the V-shaped groove for dumping the rock scraps;

s5, repeating the steps S2 to S4.

Compared with the prior art, the application has the following advantages.

The invention is provided with three receiving plates which are 120 degrees away from each other, and different V-shaped grooves can respectively collect and dump rock debris, so that the turnover times of the collecting mechanism are reduced, the rock debris is completely collected in the turnover process, the loss of the rock debris is prevented, and the weighing accuracy of the rock debris is improved.

According to the invention, through arranging the limiting block and matching with the motor, the collection mechanism can realize 120-degree reciprocating overturning, and the control difficulty is reduced.

In addition, by arranging the spraying mechanism, the invention greatly improves the cleanliness of removing the rock debris and improves the accuracy of weighing the rock debris.

Drawings

The present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a schematic view of one embodiment of a cuttings collection weighing apparatus according to the present disclosure;

FIG. 2 shows a schematic view of section A-A of FIG. 1;

FIG. 3 shows a schematic view of one embodiment of a collection mechanism according to the present invention;

fig. 4 shows a schematic block diagram of the connection structure of the acquisition control system according to the invention.

In the figure: 1. a fixing frame; 2. a collection mechanism; 21. a receiving plate; 22. a rotating shaft; 23. a V-shaped groove; 3. a weighing sensor; 4. a hanging seat; 5. a coupling; 6. a motor; 61. a position sensor; 62. a second electromagnetic valve; 7. a limiting block; 81. a first pipeline; 82. a nozzle; 83. a water pump; 84. a first pneumatic valve; 85. a first electromagnetic valve; 86. a second pipeline; 87. a second pneumatic valve; 9. the acquisition control system; 100. and the rock debris collecting and weighing device.

In the present application, all of the figures are schematic drawings which are intended to illustrate the principles of the application only and are not to scale.

Detailed Description

The invention is described below with reference to the accompanying drawings.

In the present application, directional terms or qualifiers "upper", "lower", "front", "rear", "left", "right", and the like used in the present application are used with reference to fig. 1; "clockwise", "counterclockwise", etc. are with respect to fig. 2 to which reference is made. They are not intended to limit the absolute position of the parts involved, but may vary according to the specific circumstances.

FIG. 1 shows a schematic view of one embodiment of a cuttings collection weighing apparatus according to the present disclosure; FIG. 2 shows a schematic view of section A-A of FIG. 1; FIG. 3 shows a schematic view of one embodiment of a collection mechanism according to the present invention; fig. 4 shows a schematic block diagram of the connection structure of the acquisition control system according to the invention.

As shown in fig. 1 and 4, the rock debris collecting and weighing device 100 includes a holder 1, a load cell 3, a collection control system 9, and a collection mechanism 2 for collecting rock debris. The fixing frame 1 is used for supporting parts of the invention, is of a frame structure and is formed by welding a plurality of sections of square tubes. The collecting mechanism 2 is rotatably provided in the middle of the mount 1 with its rotation axis parallel to the longitudinal direction of the mount 1, i.e., in the left-right direction as shown in fig. 1.

As shown in fig. 1, in the present embodiment, two load cells 3 are provided, respectively at both left and right ends of the collection mechanism 2, so that the load cells 3 can detect the weight of the collection mechanism 2. Specifically, the shell of the weighing sensor 3 is fixedly connected with the fixing frame 1, and the collecting mechanism 2 is rotatably connected with the probe part of the weighing sensor 3. Both weighing sensors 3 are electrically connected with the acquisition control system 9.

As shown in fig. 2, the collecting mechanism 2 includes three receiving plates 21. The three receiving plates 21 are radially and evenly distributed along the rotation direction of the collecting mechanism 2, that is, V-shaped grooves 23 with an included angle of 120 ° are formed between two adjacent receiving plates 21. With this arrangement, when it is desired to collect rock debris, the collection mechanism 2 is rotated so that any one of the V-grooves 23 is opened upward to collect rock debris falling from the outlet of the upper vibrating screen (not shown), while the load cell 3 performs real-time measurement of the weight of the collection mechanism 2 and the rock debris collected thereby. After the V-groove 23 is full, the collection mechanism 2 is turned over by 120 °, at this time, the V-groove 23 dumps the cuttings, and the opening of the other V-groove 23 faces upward, collecting the cuttings falling from the screen outlet above. Therefore, the collection mechanism 2 provided by the invention can finish dumping and collecting rock debris through one 120-degree overturning, so that the overturning times of the collection mechanism 2 are reduced, and the service life of the collection mechanism 2 is prolonged. In addition, the collecting mechanism 2 provided by the invention can collect all rock fragments falling from the outlet of the vibrating screen above in the overturning process, so that the condition of rock fragment leakage can not occur, and the measuring error of the rock fragment weight is reduced.

It is to be understood that the length of the receiving plate 21 may be changed as needed, and that the receiving plate 21 is provided at both left and right ends thereof with a baffle plate capable of blocking rock fragments.

According to the present invention, the number of the receiving plates 21 may be more than three, and it is preferable to provide three receiving plates 21. This arrangement allows the collection means 2 to collect all the cuttings during rotation, preventing loss, and also allows the collection space between two adjacent receiving plates 21 of the collection means 2 to be sufficiently large.

In a preferred embodiment, as shown in fig. 3, the collecting means 2 comprise two V-shaped plates, one of the edges of which is welded to each other. In this arrangement, one of the welded edges of the two V-shaped plates forms one of the receiving plates 21 of the collecting device 2 according to the invention, while the remaining two edges of the two V-shaped plates form the remaining two receiving plates 21. In this embodiment, the V-shaped plate used is easy to manufacture, and the two V-shaped plates are also easy to weld to each other and are stable and firm, so that the difficulty of manufacturing is reduced.

As shown in fig. 1 and 2, in a specific embodiment, the rotation shaft 22 is provided at the rotation axis of the collecting mechanism 2, and the number of the rotation shafts 22 is two, and the rotation shafts are provided at the left and right ends of the collecting mechanism 2. The collecting mechanism 2 further comprises two motors 6, corresponding to the two shafts 22, respectively. The output shaft of the motor 6 is connected with the rotating shaft 22 through the coupler 5, and the shell of the motor 6 is fixedly connected with the probe of the weighing sensor 3. A suspension seat 4 is fixedly arranged on the probe of the weighing sensor 3, the lower part of the suspension seat 4 is rotationally connected with a coupler 5, and the coupler 5 is specifically rotationally sleeved in the suspension seat 4. With the arrangement, the invention is symmetrical in the left and right directions, and can keep stable in operation. The invention connects the weighing sensor 3 with the rotating shaft 22 through the hanging seat 4 and the coupling 5, has stable structure, and is convenient for the overturning of the collecting mechanism 2 and the measurement of the weighing sensor 3.

In a specific embodiment, the motor 6 is a pneumatic motor and is connected to the second solenoid valve 62 by a pipeline. The second solenoid valve 62 is electrically connected to the acquisition control system 9. In this arrangement, the acquisition control system 9 is able to control the motor 6 through the second solenoid valve 62.

As shown in fig. 1 and 2, in a preferred embodiment, a position sensor 61 for monitoring the rotation angle of the output shaft of the motor 6 is provided on a side of the motor 6 away from the rotation shaft 22, and the position sensor 61 is electrically connected to the acquisition control system 9. The invention monitors the rotation angle of the output shaft of the motor 6 in real time through the position sensor 61, thereby judging the rotation angle of the collecting mechanism 2 and improving the control accuracy of the rotation angle of the collecting mechanism 2.

As shown in fig. 1 and 2, in a preferred embodiment, the rock debris collecting and weighing device 100 further comprises a limiting block 7 for limiting the turning angle of the collecting mechanism 2, wherein the limiting block 7 is fixedly connected with the probe of the weighing sensor 3. Specifically, the limiting block 7 is fixedly arranged on the hanging seat 4 fixedly connected with the probe of the weighing sensor 3 and is positioned at the lower part of the hanging seat 4. Two stoppers (not shown) having a phase difference of 120 ° for circumferential abutment with the stopper 7 are provided on the stopper at the end of the receiving plate 21. When the two stoppers are abutted against the limiting block 7, the openings of the two V-shaped grooves 23 are respectively upwards, so that the V-shaped grooves 23 can collect rock fragments. Under the setting, only the motor 6 is required to be controlled to rotate, and the collecting mechanism 2 is driven to rotate until the stop block is abutted with the limiting block 7, so that the control difficulty is reduced. In the present embodiment, the movement locus of the collecting mechanism 2 is 120 ° angle which is continuously reciprocated.

As shown in fig. 1 and 2, in a preferred embodiment, a shower mechanism for flushing the receiving plate 21 is provided on the holder 1. Specifically, the shower mechanism includes a water pump 83, and a first line 81 and a second line 86 connected to an outlet of the water pump 83. The water pump 83 is electrically connected with the acquisition control system 9. The first pipeline 81 and the second pipeline 86 are symmetrically arranged by taking the vertical plane where the rotation axis of the collecting mechanism 2 is located as a symmetrical plane, the axes of the first pipeline 81 and the second pipeline 86 are parallel to the rotation axis of the collecting mechanism 2, and a plurality of nozzles 82 are uniformly arranged on the first pipeline 81 and the second pipeline 86.

As shown in fig. 1,2 and 4, specifically, the first pipe 81 and the second pipe 86 are two stainless steel pipes, which are disposed on the fixing frame 1 by welding, and three nozzles 82 facing the receiving plate 21 are disposed on the first pipe 81 and the second pipe 86, respectively. The water pump 83 adopts a pneumatic diaphragm pump, and the first pipeline 81 and the second pipeline 86 are connected with the outlet of the pneumatic diaphragm pump through a pagoda joint. The pneumatic diaphragm pump is connected with the acquisition control system 9 through a first electromagnetic valve 85, namely, the pneumatic diaphragm pump is connected with the first electromagnetic valve 85 through a pipeline, and the first electromagnetic valve 85 is electrically connected with the acquisition control system 9. With this arrangement, the acquisition control system 9 is able to control the pneumatic diaphragm pump through the first solenoid valve 85.

As shown in fig. 4, in a preferred embodiment, a first pneumatic valve 84 is provided between the water pump 83 and the first line 81, and a second pneumatic valve 87 is provided between the water pump 83 and the second line 86, both the first pneumatic valve 84 and the second pneumatic valve 87 being connected to the first solenoid valve 85. With this arrangement, the acquisition control system 9 can control the first pneumatic valve 84 and the second pneumatic valve 87 respectively through the first electromagnetic valve 85, thereby realizing that the first pipeline 81 or the second pipeline 86 individually washes the corresponding receiving plate 21, realizing fine control, and saving the water consumption.

According to the present invention, there is also provided a rock debris collecting and weighing method, using the rock debris collecting and weighing device 100 according to the present invention, comprising the steps of:

s1, turning over the collecting mechanism 2 to enable one V-shaped groove 23 to face upwards;

s2, collecting rock debris by an upward V-shaped groove 23, and monitoring the weight of the rock debris by a weighing sensor 3;

S3, turning the collecting mechanism 2 by 120 degrees to enable the other V-shaped groove 23 to face upwards, and pouring rock debris in the original V-shaped groove 23;

S4, cleaning the rock scraps remained on the V-shaped groove 23 where the rock scraps are dumped;

s5, repeating the steps S2 to S4.

Specifically, the debris collection weighing method using the debris collection weighing apparatus 100 includes the following steps.

The first solenoid valve 85 and the second solenoid valve 62 are both in communication with compressed air, and the inlet of the water pump 83 is in communication with a water source via a pipeline.

After the acquisition control system 9 is powered on, the signals of the position sensor 61 and the weighing sensor 3 are received.

The acquisition control system 9 determines whether or not there is one opening of the V-groove 23 of the collecting mechanism 2 facing directly upward from the signal of the position sensor 61. The position sensor 61 may be an angular displacement sensor, and the position of the V-groove 23 is indirectly obtained by measuring the rotation angle of the rotation shaft 22. If the V-shaped groove 23 is not positioned at the position of the opening facing the right upper direction, the collection control system 9 controls the second electromagnetic valve 62 to supply air to the motor 6 in a counterclockwise direction, drives the collection mechanism 2 to rotate counterclockwise until stopping and forming balance force under the abutting action of the limiting block 7 to keep stable, and at the moment, one V-shaped groove 23 is positioned at the state of the opening facing the right upper direction, and begins to collect rock debris.

The collection control system 9 determines whether the collection mechanism 2 is full or not by the signal of the load cell 3, for example, an upper limit value may be set according to the actual situation, and when the measurement value of the load cell 3 reaches the upper limit value, it is determined that the collection mechanism 2 is full.

After the collection means 2 is full, the collection control system 9 rotates the motor 6 clockwise by means of the second solenoid valve 62 so that the collection means 2 is turned clockwise by 120 ° to turn over the cuttings. The collection control system 9 controls the water pump 83 and the first pneumatic valve 84 to supply high-pressure water to the nozzle of the first pipeline 81 through the first electromagnetic valve 85, and washes the bearing plate 21, wherein the washing time is set according to actual conditions. At the same time, the collecting mechanism 2 obtains clockwise overturning force and the limiting block 7 form balance force, and the other V-shaped groove 23 of the collecting mechanism 2 receives rock fragments.

When the collection control system 9 judges that the rock debris collected by the collection mechanism 2 is full, the collection control system 9 controls the second electromagnetic valve 62 to supply air to the motor 6 in a counterclockwise direction, drives the collection mechanism 2 to rotate counterclockwise until the collection mechanism stops under the abutting action of the limiting block 7 and forms balance force to keep stable, and enables the collection mechanism 2 to overturn counterclockwise by 120 degrees to topple the rock debris. The acquisition control system 9 controls the water pump 83 and the second pneumatic valve 87 through the first electromagnetic valve 85 to supply high-pressure water to the nozzle of the second pipeline 86, and washes the bearing plate 21, wherein the washing time is set according to actual conditions. At the same time, the other V-groove 23 of the collecting device 2 receives rock debris.

According to the process, the rock debris is repeatedly weighed, turned over and cleaned, and the work is continuously carried out.

In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that the above description is only of a preferred embodiment of the invention and is not to be construed as limiting the invention in any way. Although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the techniques described in the foregoing examples, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The rock debris collecting and weighing device comprises a fixing frame (1), a weighing sensor (3), an acquisition control system (9) and a collecting mechanism (2) for collecting rock debris, wherein the weighing sensor (3) is fixedly arranged on the fixing frame (1), the collecting mechanism (2) is rotationally connected with the weighing sensor (3), the weighing sensor (3) is electrically connected with the acquisition control system (9),

The collecting mechanism (2) comprises three bearing plates (21), the three bearing plates (21) are radial, the bearing plates are uniformly distributed along the rotating direction of the collecting mechanism (2), and a V-shaped groove (23) for collecting rock debris is formed between every two adjacent bearing plates (21).

2. The rock debris collecting and weighing device according to claim 1, wherein said collecting means (2) comprises two V-shaped plates welded to each other, one of said receiving plates (21) of said collecting means (2) being constituted by one of the welded edges of said two V-shaped plates, the remaining two edges of said two V-shaped plates constituting the remaining two said receiving plates (21) of said collecting means (2), respectively.

3. The rock debris collecting and weighing device according to claim 2, further comprising a motor (6), wherein a rotating shaft (22) is arranged at the rotating axis of the collecting mechanism (2), an output shaft of the motor (6) is connected with the rotating shaft (22) through a coupling (5), a shell of the motor (6) is fixedly connected with a probe of the weighing sensor (3), and the probe of the weighing sensor (3) is rotatably connected with the coupling (5) through a hanging seat (4).

4. A rock debris collecting and weighing device according to claim 3, characterised in that a position sensor (61) for monitoring the rotation angle of the output shaft of the motor (6) is arranged on the motor (6), the position sensor (61) being electrically connected to the collection control system (9).

5. The rock debris collecting and weighing device according to any one of claims 1-4, further comprising a limiting block (7) for limiting the turning angle of the collecting mechanism (2), said limiting block (7) being fixedly connected with the probe of the weighing sensor (3).

6. The rock debris collecting and weighing device according to claim 5, wherein the stopper (7) is configured such that when the collecting means (2) is turned to a limit angle, the opening of one of the V-grooves (23) is directed directly above.

7. The rock debris collecting and weighing device according to any one of claims 1 to 4, characterised in that a spray mechanism for flushing the receiving plate (21) is provided on the holder (1).

8. The rock debris collecting and weighing device according to claim 7, wherein the spraying mechanism comprises a water pump (83) and a first pipeline (81) and a second pipeline (86) which are connected with an outlet of the water pump (83), the first pipeline (81) and the second pipeline (86) are symmetrically arranged by taking a vertical plane where a rotation axis of the collecting mechanism (2) is located as a symmetry plane, and the axes of the first pipeline (81) and the second pipeline (86) are parallel to the rotation axis of the collecting mechanism (2), and a plurality of nozzles (82) are arranged on the first pipeline (81) and the second pipeline (86).

9. The rock debris collecting and weighing device according to claim 8, wherein a first pneumatic valve (84) is arranged between the water pump (83) and the first pipeline (81), and a second pneumatic valve (87) is arranged between the water pump (83) and the second pipeline (86), both the first pneumatic valve (84) and the second pneumatic valve (87) being connected to the collection control system (9).

10. A method of rock debris collection and weighing, characterized by using a rock debris collection and weighing device according to any one of claims 1-9, comprising the steps of:

s1, turning over the collecting mechanism (2) to enable one V-shaped groove (23) to face upwards;

s2, collecting rock debris by the upward V-shaped groove (23), and monitoring the weight of the rock debris by the weighing sensor (3);

S3, turning the collecting mechanism (2) for 120 degrees, enabling the other V-shaped groove (23) to face upwards, and pouring rock debris from the original V-shaped groove (23);

s4, cleaning the rock scraps remained on the V-shaped groove (23) for dumping the rock scraps;

s5, repeating the steps S2 to S4.