Mining drilling cutting method sampling device and method based on negative pressure adsorption technology

Abstract

The invention relates to the technical field of mineral cutting sampling devices, and provides a mining drilling cutting method sampling device and method based on the negative pressure adsorption technology, and the mining drilling cutting method sampling device based on the negative pressure adsorption technology comprises a cyclone separator, a pulverized coal weighing mechanism and a fan, the cyclone separator is used for separating drilling cuttings, the drilling cutting weighing mechanism is used for weighing the drilling cuttings separated from the cyclone separator, the pulverized coal weighing mechanism is used for weighing pulverized coal in the drilling cuttings, the primary weighing assembly is used for filtering airflow in the cyclone separator and weighing filtered dust, the secondary weighing assembly is in sliding connection with the primary weighing assembly, and the secondary weighing assembly is in sliding connection with the secondary weighing assembly. By means of the technical scheme, the problem that in the prior art, when an existing sampling device collects the drilling cuttings, due to the fact that the collecting amount of the coal powder in the drilling cuttings is possibly insufficient, the measuring result may have deviation is solved.

Description

Technical Field

[0001] The invention relates to the technical field of cuttings sampling devices, and in particular to a mining cuttings sampling device and method based on negative pressure adsorption technology. Background Art

[0002] In the production process of coal mines, the drill cuttings method can be used to monitor mine pressure and prevent geological disasters. By drilling a hole of a specific diameter into the coal seam and observing the amount and depth of coal powder generated during the drilling process, the stability of the coal seam can be evaluated and possible dangers such as rock burst, coal and gas protrusion can be detected. It can provide timely safety information on the ground or underground working environment, help miners take corresponding preventive measures, and reduce the occurrence of accidents.

[0003] When drilling a coal seam at a certain depth, coal cuttings are brought out by the drill rig. The drill cuttings method measures the drill cuttings generated during the drilling process and the amount of coal powder brought out of each borehole. When the coal powder output exceeds the normal pressure coal seam output, it means that the area has the risk of impact, and it is necessary to determine a safe mining method and preventive measures. The current technology collects the drill cuttings generated during drilling, mostly by adsorbing the drill cuttings through a fan, and then separating and weighing the drill cuttings to measure whether there is a risk of impact at each location. However, there are large pieces of drill cuttings in the drill cuttings, including coal powder. However, the existing collection of drill cuttings mostly collects large-particle drill cuttings. When collecting drill cuttings, coal powder will be mixed in the airflow. Once the amount of coal powder collected is insufficient, it may cause deviations in the measurement results. Therefore, in order to make the measured data more accurate, we propose a mining drill cuttings sampling device and method based on negative pressure adsorption technology. Summary of the invention

[0004] The present invention proposes a mining drill cuttings sampling device and method based on negative pressure adsorption technology, which solves the problem that the existing sampling devices in the related art may not collect enough coal powder in the drill cuttings, resulting in deviation in the measurement results.

[0005] The technical solution of the present invention is as follows:

[0006] A mining cuttings sampling device based on negative pressure adsorption technology comprises a cyclone separator, a coal powder weighing mechanism and a fan, wherein a particle outlet is provided below the cyclone separator, an inlet is provided on the side of the cyclone separator, an air riser is provided above the cyclone separator, the inlet of the cyclone separator is connected to a drilling rig, a cuttings weighing mechanism is provided below the cyclone separator, wherein the cuttings weighing mechanism is fixedly connected to the cyclone separator, the particle outlet extends into the cuttings weighing mechanism, the cuttings weighing mechanism is used to weigh the cuttings separated from the cyclone separator, and the coal powder weighing mechanism is used to weigh the cuttings separated from the cyclone separator. The mechanism is arranged on the side of the drill cuttings weighing mechanism, the coal powder weighing mechanism is connected to the riser, and the coal powder weighing mechanism is used to weigh the coal powder in the drill cuttings, wherein the coal powder weighing mechanism includes a primary weighing component and a secondary weighing component, the primary weighing component is used to filter the airflow in the cyclone separator and weigh the dust filtered out, the secondary weighing component is arranged below the primary weighing component, the secondary weighing component is slidably connected to the primary weighing component, and the secondary weighing component is used to weigh the coal powder filtered out and dropped from the primary weighing component.

[0007] The drill cuttings weighing mechanism includes a collecting shell, a collecting cover and a discharge assembly. The cyclone separator is fixedly mounted on the collecting shell. The collecting cover is fixedly connected to the particle outlet. The collecting cover is conically arranged. The bottom of the collecting cover is open. The particle outlet extends into the collecting cover. The discharge assembly is rotatably arranged on the collecting shell. The discharge assembly is arranged below the collecting cover. The discharge assembly is used to weigh and empty the drill cuttings in the collecting cover.

[0008] The discharge assembly includes a tray rack, tray one, drive cylinder one, tray two and drive cylinder two, the tray rack is rotatably arranged on one side of the collection shell, a weighing sensor is arranged between tray one and the tray rack, tray one can be rotated to the bottom of the collection cover and fit with the collection cover, wherein a plurality of weighing sensors are arranged, the drive cylinder one is rotatably arranged on the collection shell, the output end of the drive cylinder one is rotatably connected to one end of the tray rack away from tray one, the tray two is rotatably arranged on the other side of the collection shell away from the tray rack, the drive cylinder two is rotatably arranged on one side of the collection shell away from the drive cylinder one, the output end of the drive cylinder two is rotatably connected to one end of the tray two away from the drive cylinder one, and a plurality of through holes are arranged on the upper side of the collection cover away from tray one.

[0009] The primary weighing assembly comprises a dust removal shell, a sealing strip, a driving cylinder three, a cloth bag frame, a weighing frame and a dust cleaning component. A discharge cylinder is arranged below the dust removal shell, and the secondary weighing assembly is slidably connected to the discharge cylinder. The upper side of the interior of the dust removal shell is arranged as a clean air zone, and the lower side is arranged as a dust and gas zone. The clean air zone is communicated with the fan, and the dust and gas zone is connected to the riser. The sealing strip is arranged between the clean air zone and the dust and gas zone. A plurality of driving cylinders three are arranged, and a plurality of driving cylinders three are fixedly arranged in the dust and gas zone. The output end of the driving cylinder three is detachably connected to the cloth bag frame. The driving cylinder three is arranged below the cloth bag frame, and the cloth bag frame is provided with Multiple dust removal bags, the bag frame is arranged in the dust and gas zone, the weighing frame is fixedly arranged in the dust and gas zone, the weighing frame is arranged between the multiple dust removal bags, and multiple weighing sensors are fixedly arranged on the side of the weighing frame close to the bag frame. The cleaning component is arranged on the dust removal shell, and the cleaning component is used to clean the coal powder on the dust removal bags. The cleaning component includes a gas cylinder and a dust removal pipe, the gas cylinder is arranged on the dust removal shell, the dust removal pipe is fixedly arranged in the clean air zone, the dust removal pipe is connected with the gas cylinder, and the dust removal pipe is provided with multiple air blowing ports, and the multiple air blowing ports correspond one by one to the top of the multiple dust removal bags.

[0010] The secondary weighing assembly includes a dust collecting bin, a strip groove, an ash discharge port, a motor, a shielding piece and a measuring component. The dust collecting bin is vertically slidably connected to the discharge tube. The lower part of the dust collecting bin is arranged in an arc shape. The strip groove is arranged on one side of the dust collecting bin. The strip groove is arranged vertically. The ash discharge port is arranged on the side of the dust collecting bin away from the strip groove. The motor is arranged on the side of the dust collecting bin. The output end of the motor passes through the strip groove. A spiral blade is arranged on the output end of the motor. The spiral blade is rotatably arranged in the dust collecting bin. The shielding piece is fixedly installed on the motor. The shielding piece is arranged between the motor and the spiral blade. The shielding piece is fitted with the strip groove. The measuring component is arranged on the dust collecting bin. The measuring component is used to measure the weight change of dust in the dust collecting bin.

[0011] The measuring component includes a support plate, a driving cylinder four and a weighing sensor three. There are multiple support plates, and the multiple support plates are fixedly arranged on the dust collecting bin. There are multiple driving cylinders four, and a driving cylinder four is arranged under each support plate. The output end of each driving cylinder four is detachably connected to each support plate, and the weighing sensor three is arranged under each support plate.

[0012] The mining drill cuttings sampling method based on negative pressure adsorption technology uses the mining drill cuttings sampling device based on negative pressure adsorption technology, and includes the following steps:

[0013] Step 1, drilling cuttings separation: the fan sucks gas out of the dust removal housing to form a negative pressure in the dust removal housing. Since the dust removal housing is connected to the cyclone separator, the negative pressure airflow will suck the drilling cuttings at the drilling rig through the inlet;

[0014] Step 2, collecting drill cuttings: the negative pressure airflow drives the drill cuttings to move in the cyclone separator, and the large-particle drill cuttings fall onto the tray 1 through the particle outlet when rotating in the cyclone separator;

[0015] Step 3, weighing once: the weighing sensor 1 weighs the drill cuttings falling on the tray 1;

[0016] Step 4, coal powder collection: the airflow in the cyclone separator drives part of the coal powder to enter the dust gas area through the riser pipe, and the coal powder is filtered and separated by the dust bag when the gas passes through the dust bag;

[0017] Step 5, coal powder cleaning: the gas cylinder fills the dust removal pipe with high-pressure gas, the gas is blown toward the dust removal bag through the blowing port, and part of the dust on the dust removal bag falls into the dust collection bin;

[0018] Step 6, secondary weighing: the fan stops sucking in air, the output end of the driving cylinder 3 shortens so that the bag frame is separated from the sealing strip, and as the output end of the driving cylinder 3 shortens, the bag frame contacts the weighing sensor 2, and the weighing sensor 2 weighs the bag frame, the dust bag and the residual coal powder;

[0019] Step seven, weighing three times: the coal powder falls into the dust collecting bin, the output end of the driving cylinder four shortens, the support plate drives the dust collecting bin to move downward, and the output end of the motor slides in the strip groove. As the output end of the driving cylinder four shortens, when the support plate contacts the weighing sensor three, the output end of the driving cylinder four separates from the support plate, and the weighing sensor three weighs the dust collecting bin and the coal powder therein.

[0020] The working principle and beneficial effects of the present invention are:

[0021] 1. In the present invention, a collecting cover and a tray 2 are provided. When the tray 1 and the tray 2 are rotated to the bottom of the collecting cover, the tray 2 is located under the tray 1, and the tray 2 contacts the tray rack to prevent excessive drilling cuttings from causing the tray rack to rotate and cause inaccurate weighing. The output ends of the driving cylinder 2 and the driving cylinder 1 are shortened together, and the tray 2 and the tray rack rotate on the collecting shell in turn. The drilling cuttings on the tray 1 are dumped onto the ground, which is convenient for weighing next time. The weighing sensor is actually a device that converts a mass signal into a measurable electrical signal output for weighing. The through hole above the collecting cover can prevent the negative pressure generated by the fan suction from generating an adsorption force on the tray 1. The negative pressure will adsorb the tray 2 through the through hole on the collecting cover to avoid affecting the weighing data.

[0022] 2. In the present invention, by providing a strip groove and a support plate, after the coal powder falls on the spiral blade, the coal powder will not leave through the ash discharge port because the spiral blade is at the bottom of the dust collecting bin. At the same time, due to the shielding sheet, the coal powder will not leave the dust collecting bin through the strip groove. When weighing, the output end of the driving cylinder four is shortened to drive the dust collecting bin and the support plate to descend. At this time, the spiral blade slides in the strip groove, and the spiral blade does not contact the bottom of the dust collecting bin, which will not affect the weighing. The output end of the driving cylinder four is shortened, and the support plate is placed on multiple weighing sensors three to weigh the coal powder in the dust collecting bin.

[0023] 3. In the present invention, by providing a drill cuttings weighing mechanism, large-particle drill cuttings can be weighed without being affected by negative pressure, and by providing a coal powder weighing mechanism, coal powder can be fully collected and weighed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is another perspective structural schematic diagram of the whole of the present invention;

[0027] Figure 3 It is a schematic diagram of the internal cross-sectional structure of the collecting shell in the present invention;

[0028] Figure 4 It is a schematic diagram of the cross-sectional structure inside the dust removal housing of the present invention;

[0029] Figure 5 A schematic diagram of the cross-sectional structure of the interior of the dust removal housing of the present invention from another perspective;

[0030] Figure 6 It is a schematic diagram of the structure of the cooperation between the weighing frame and the cloth bag frame in the present invention;

[0031] Figure 7 It is a schematic diagram of the internal cross-sectional structure of the dust collecting bin in the present invention.

[0032] In the figure: 1. cyclone separator; 2. fan; 3. collection shell; 4. collection cover; 5. tray rack; 6. tray one; 7. weighing sensor one; 8. drive cylinder one; 9. tray two; 10. drive cylinder two; 11. dust removal shell; 12. clean air area; 13. dust and gas area; 14. sealing strip; 15. drive cylinder three; 16. bag frame; 17. dust bag; 18. weighing frame; 19. gas cylinder; 20. dust removal pipe; 21. dust collection bin; 22. strip groove; 23. ash discharge port; 24. motor; 25. shielding piece; 26. support plate; 27. drive cylinder four; 28. weighing sensor three; 29. ​​weighing sensor two; 30. riser pipe. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1

[0035] like Figures 1 to 7 As shown, this embodiment proposes a mining cuttings sampling device based on negative pressure adsorption technology, including a cyclone separator 1, a coal powder weighing mechanism and a fan 2, a particle outlet is provided below the cyclone separator 1, an inlet is provided on the side of the cyclone separator 1, an air riser 30 is provided above the cyclone separator 1, the inlet is connected to the drilling rig, and a cuttings weighing mechanism is provided below the cyclone separator 1, wherein the cuttings weighing mechanism is fixedly connected to the cyclone separator 1, the particle outlet extends into the cuttings weighing mechanism, the cuttings weighing mechanism is used to weigh the cuttings separated from the cyclone separator 1, and the coal powder weighing mechanism The coal powder weighing mechanism is arranged on the side of the drill cuttings weighing mechanism, and is connected to the riser 30. The coal powder weighing mechanism is used to weigh the coal powder in the drill cuttings, wherein the coal powder weighing mechanism includes a primary weighing component and a secondary weighing component. The primary weighing component is used to filter the airflow in the cyclone separator 1 and weigh the dust filtered out. The secondary weighing component is arranged below the primary weighing component, and the secondary weighing component is slidably connected to the primary weighing component. The secondary weighing component is used to weigh the coal powder filtered out and dropped from the primary weighing component. The fan 2 is fixedly arranged on the coal powder weighing mechanism.

[0036] like Figures 1 to 3As shown, the drill cuttings weighing mechanism includes a collecting shell 3, a collecting cover 4 and a discharge assembly. The cyclone separator 1 is fixedly mounted on the collecting shell 3, the collecting cover 4 is fixedly connected to the particle outlet, the collecting cover 4 is arranged in a conical shape, the lower part of the collecting cover 4 is arranged in an open shape, and the particle outlet extends into the collecting cover 4. The discharge assembly is rotatably arranged on the collecting shell 3, and the discharge assembly is arranged below the collecting cover 4. The discharge assembly is used to weigh and empty the drill cuttings in the collecting cover 4. The large-particle drill cuttings collected in the cyclone separator 1 fall onto the tray 6 through the particle outlet. Due to the collecting cover 4, the drill cuttings will not fall outside the tray 6.

[0037] like Figure 3 As shown, the discharge assembly includes a tray rack 5, a tray 1 6, a drive cylinder 1 8, a tray 2 9 and a drive cylinder 2 10. The tray rack 5 is rotatably arranged on one side of the collection shell 3. A weighing sensor is arranged between the tray 1 6 and the tray rack 5. The tray 1 6 can be rotated to the bottom of the collection cover 4 and fit with the collection cover 4, wherein a plurality of weighing sensors 7 are arranged. The drive cylinder 1 8 is rotatably arranged on the collection shell 3. The output end of the drive cylinder 1 8 is rotatably connected to an end of the tray rack 5 away from the tray 1 6. The tray 2 9 is rotatably arranged on a side of the collection shell 3 away from the tray rack 5. The drive cylinder 2 10 is rotatably arranged on a side of the collection shell 3 away from the drive cylinder 1 8. The output end of the drive cylinder 2 10 is rotatably connected to an end of the tray 2 9 away from the drive cylinder 8. A plurality of through holes are arranged on the side of the collection cover 4 away from the tray 1 6. When both the tray 1 6 and the tray 2 9 are rotated to the collection cover 4, the tray 1 6 and the tray 2 9 are rotated to the collection cover 4. When the collecting cover 4 is below, tray 2 9 is located below tray 1 6, tray 2 9 contacts tray rack 5, drill cuttings fall on tray 1 6, tray 2 9 and tray rack 5 support weighing sensor 1 7, weighing sensor 1 7 weighs the drill cuttings on tray 6 to prevent excessive drill cuttings from causing tray rack 5 to rotate and cause inaccurate weighing, the output end of drive cylinder 2 10 and drive cylinder 1 8 are shortened together, tray 2 9 and tray rack 5 rotate on the collecting shell 3 in turn, and the drill cuttings on tray 6 are dumped onto the ground to facilitate weighing next time. The weighing sensor is actually a device that converts a mass signal into a measurable electrical signal output for weighing, and the through hole above the collecting cover 4 can prevent the negative pressure generated by the suction of the fan 2 from generating an adsorption force on tray 6, and the negative pressure will adsorb tray 2 9 through the through hole on the collecting cover 4 to avoid affecting the weighing data.

[0038] like Figures 4 to 6As shown, the primary weighing assembly includes a dust removal shell 11, a sealing strip 14, a driving cylinder three 15, a bag frame 16, a weighing frame 18 and a dust cleaning component. A discharge cylinder is arranged below the dust removal shell 11, and the secondary weighing assembly is slidably connected to the discharge cylinder. The upper side of the interior of the dust removal shell 11 is arranged as a clean air zone 12, and the lower side is arranged as a dust gas zone 13. The clean air zone 12 is connected to the fan 2, and the dust gas zone 13 is connected to the riser 30. The sealing strip 14 is arranged between the clean air zone 12 and the dust gas zone 13. A plurality of driving cylinders three 15 are arranged, and the plurality of driving cylinders three 15 are fixedly arranged in the dust gas zone 13. The output end of the driving cylinder 3 15 is detachably connected to the bag frame 16, the driving cylinder 3 15 is arranged below the bag frame 16, a plurality of dust bags 17 are arranged on the bag frame 16, the bag frame 16 is arranged in the dust and gas zone 13, the weighing frame 18 is fixedly arranged in the dust and gas zone 13, the weighing frame 18 is arranged between the plurality of dust bags 17, a plurality of weighing sensors 29 are fixedly arranged on one side of the weighing frame 18 close to the bag frame 16, a dust cleaning component is arranged on the dust removal housing 11, the dust cleaning component is used to clean the coal powder on the dust removal bag 17, and the dust cleaning component includes a gas cylinder 19 and a dust removal The dust collecting pipe 20 is fixedly arranged in the clean air zone 12, and the dust collecting pipe 20 is connected with the gas cylinder 19. A plurality of air blowing ports are arranged on the dust collecting pipe 20, and the plurality of air blowing ports correspond to the tops of the plurality of dust collecting bags 17 one by one. The air blowing ports are arranged above the dust collecting bags 17. The airflow in the cyclone separator 1 contains coal powder, and the coal powder is filtered by the dust collecting bags 17 when the airflow passes through the dust collecting bags 17. When the drilling of a hole at a certain position is completed, the air blowing port can clean the dust collecting bags 17 by blowing, and the coal powder falls into the dust collecting bin 21, but the dust collecting bags There will be residual coal powder on the bag 17. When the output end of the driving cylinder three 15 is extended, it will push the bag frame 16 to contact the arc sealing strip 14. The airflow can only enter the clean air area 12 through the dust removal bag 17. The output end of the driving cylinder three 15 is shortened to place the bag frame 16 on the weighing sensor two 29. The weighing frame 18 supports the weighing sensor two 29. The bag frame 16 is placed on the weighing sensor two 29 for weighing. The bag frame 16 is weighed. The weight change on the bag frame 16 can be obtained through multiple weighing, and then the weight of the coal powder remaining on the dust removal bag 17 can be obtained.

[0039] like Figures 4 to 7As shown, the secondary weighing assembly includes a dust collecting bin 21, a strip groove 22, an ash discharge port 23, a motor 24, a shielding piece 25 and a measuring component. The dust collecting bin 21 is slidably connected to the discharge cylinder. The lower part of the dust collecting bin 21 is arranged in an arc shape. The strip groove 22 is arranged on one side of the dust collecting bin 21. The strip groove 22 is arranged vertically. The ash discharge port 23 is arranged on the side of the dust collecting bin 21 away from the strip groove 22. The motor 24 is arranged on the side of the dust collecting bin 21. The output end of the motor 24 passes through the strip groove 22. The output end of the motor 24 is provided with a spiral blade, which is rotatably arranged in the dust collecting bin 21. The shielding piece 25 is fixedly installed on the motor 24, and the shielding piece 25 is arranged between the motor 24 and the spiral blade. The shielding piece 25 is in contact with the strip groove 22. The measuring component is arranged on the dust collecting bin 21, and the measuring component is used to measure the weight change of the dust in the dust collecting bin 21. The measuring component includes a support plate 26, a driving cylinder four 27 and a weighing sensor three 28. The support plate 26 is provided with a plurality of , multiple support plates 26 are fixedly arranged on the dust collecting bin 21, multiple drive cylinders 27 are arranged, and a drive cylinder 27 is arranged under each support plate 26. The output end of each drive cylinder 27 is detachably connected to each support plate 26, and a weighing sensor 3 28 is arranged under each support plate 26. After the coal powder falls on the spiral blade, the coal powder will not leave through the ash discharge port 23 because the spiral blade is at the bottom of the dust collecting bin 21. At the same time, due to the shielding sheet 25, the coal powder will not leave the dust collecting bin 21 through the strip groove 22. When weighing, the output end of the drive cylinder 27 is shortened to drive the dust collecting bin 21 and the support plate 26 to descend. At this time, the spiral blade slides in the strip groove 22, and the spiral blade does not contact the bottom of the dust collecting bin 21, which will not affect the weighing. The output end of the drive cylinder 27 is shortened, and the support plate 26 is placed on multiple weighing sensors 3 28. The weighing sensor 3 28 supports and weighs the dust collecting bin 21, and weighs the coal powder in the dust collecting bin 21.

[0040] In this embodiment, large-particle drill cuttings are separated from the air flow in the cyclone separator 1 and fall on the tray 1 6, and the weighing sensor 1 7 weighs them. The tray 2 9 supports the tray frame 5 to prevent the drill cuttings carried on the tray 1 6 from tilting the tray frame 5, which makes the measurement result inaccurate. By setting an opening above the collecting hood 4, the negative pressure in the cyclone separator 1 will act on the tray 2 9 through the through hole on the collecting hood 4, and the negative pressure will not directly act on the tray 1 6, avoiding the negative pressure generated by the wind from affecting the measurement result. The coal powder is removed by the dust bag 1 After filtration, part of the dust falls into the dust collecting bin 21. When the output end of the driving cylinder 27 is shortened, the dust collecting bin 21 descends, so that the weighing sensor 3 28 can weigh the weight of the coal powder in the dust collecting bin 21. The spiral blade slides in the strip groove 22, and the height of the spiral blade remains unchanged. The spiral blade moves to the upper part of the dust collecting bin 21. At the same time, the shielding sheet 25 can prevent the coal powder from leaving the dust collecting bin 21 through the strip groove 22. The coal powder falling on the spiral blade can also prevent the coal powder from leaving the dust collecting bin 21 through the ash discharge port 23 when the motor 24 does not drive the spiral blade to rotate.

[0041] Embodiment 2

[0042] The second embodiment of the present application supplements the first embodiment by stating that the mining drill cuttings sampling method based on negative pressure adsorption technology includes the following steps:

[0043] Step 1, drilling cuttings separation: the fan 2 sucks the gas out of the dust removal housing 11 to form a negative pressure in the dust removal housing. Since the dust removal housing is connected to the cyclone separator, the negative pressure airflow will suck the drilling cuttings at the drilling rig through the inlet;

[0044] Step 2, collecting drill cuttings: the negative pressure airflow drives the drill cuttings to move in the cyclone separator 1, and the large particles of drill cuttings fall onto the tray 1 6 through the particle outlet when rotating in the cyclone separator 1;

[0045] Step 3, weighing once: the weighing sensor 7 weighs the drill cuttings falling on the tray 6;

[0046] Step 4: Collecting coal powder: The airflow in the cyclone separator 1 drives part of the coal powder to enter the dust gas area 13 through the riser 30. When the gas passes through the dust bag 17, the coal powder is filtered and separated by the dust bag 17;

[0047] Step 5: Cleaning coal powder: The gas cylinder 19 fills the dust removal pipe 20 with high-pressure gas, and the gas is blown toward the dust removal bag 17 through the blowing port, and part of the dust on the dust removal bag 17 falls into the dust collection bin 21;

[0048] Step 6, secondary weighing: the fan 2 stops sucking in air, the output end of the driving cylinder 3 15 shortens so that the bag frame 16 is separated from the sealing strip 14, and as the output end of the driving cylinder 3 15 shortens, the bag frame 16 contacts the weighing sensor 2 29, and the weighing sensor 2 29 weighs the bag frame 16, the dust bag 17 and the residual coal powder;

[0049] Step seven, weighing three times: the coal powder falls into the dust collecting bin 21, the output end of the driving cylinder four 27 shortens, the support plate 26 drives the dust collecting bin 21 to move downward, and the output end of the motor 24 slides in the strip groove 22. As the output end of the driving cylinder four 27 shortens, when the support plate 26 contacts the weighing sensor three 28, the output end of the driving cylinder four 27 separates from the support plate 26, and the weighing sensor three 28 weighs the dust collecting bin 21 and the coal powder therein.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mining cuttings sampling device based on negative pressure adsorption technology, characterized in that: include: A cyclone separator (1), wherein a particle outlet is provided at the bottom of the cyclone separator (1), an inlet is provided at the side of the cyclone separator (1), an air riser (30) is provided at the top of the cyclone separator (1), the inlet of the cyclone separator (1) is connected to a drilling rig, and a drill cuttings weighing mechanism is provided at the bottom of the cyclone separator (1); The drill cuttings weighing mechanism is fixedly connected to the cyclone separator (1), the particle outlet extends into the drill cuttings weighing mechanism, and the drill cuttings weighing mechanism is used to weigh the drill cuttings separated from the cyclone separator (1); A coal powder weighing mechanism, the coal powder weighing mechanism being arranged on the side of the drill cuttings weighing mechanism, the coal powder weighing mechanism being connected to the riser (30), and the coal powder weighing mechanism being used to weigh the coal powder in the drill cuttings; The coal powder weighing mechanism comprises a primary weighing component and a secondary weighing component, wherein the primary weighing component is used to filter the airflow in the cyclone separator (1) and weigh the dust filtered out, and the secondary weighing component is arranged below the primary weighing component, the secondary weighing component is slidably connected to the primary weighing component, and the secondary weighing component is used to weigh the coal powder filtered out of the primary weighing component. A fan (2), wherein the fan (2) is fixedly arranged on the coal powder weighing mechanism.

2. The mining cuttings sampling device based on negative pressure adsorption technology according to claim 1 is characterized in that: The drill cuttings weighing mechanism comprises: A collecting shell (3), the cyclone separator (1) being fixedly mounted on the collecting shell (3); A collecting hood (4), the collecting hood (4) being fixedly connected to the particle outlet, the collecting hood (4) being arranged in a conical shape, the lower part of the collecting hood (4) being arranged in an open shape, and the particle outlet extending into the collecting hood (4); A discharge assembly is rotatably arranged on the collection shell (3), the discharge assembly is arranged below the collection cover (4), and the discharge assembly is used to weigh and empty the drill cuttings in the collection cover (4).

3. The mining cuttings sampling device based on negative pressure adsorption technology according to claim 2 is characterized in that: The discharge assembly comprises: a tray rack (5), the tray rack (5) being rotatably arranged on one side of the collection housing (3); Tray 1 (6), a weighing sensor is arranged between the tray 1 (6) and the tray frame (5), and the tray 1 (6) can be rotated to the bottom of the collection cover (4) and fit with the collection cover (4); Wherein, the weighing sensor 1 (7) is provided in plurality; A driving cylinder (8), wherein the driving cylinder (8) is rotatably disposed on the collecting housing (3), and an output end of the driving cylinder (8) is rotatably connected to an end of the tray rack (5) away from the tray (6); Tray 2 (9), the tray 2 (9) being rotatably disposed on the other side of the collecting housing (3); A second driving cylinder (10), wherein the second driving cylinder (10) is rotatably arranged on a side of the collecting housing (3) away from the first driving cylinder (8), and an output end of the second driving cylinder (10) is rotatably connected to an end of the second tray (9) away from the first driving cylinder (8).

4. The mining cuttings sampling device based on negative pressure adsorption technology according to claim 3 is characterized in that: The upper side of the collecting cover (4) is provided with a plurality of through holes.

5. The mining cuttings sampling device based on negative pressure adsorption technology according to claim 4 is characterized in that: The primary weighing assembly comprises: A dust removal housing (11), a discharge cylinder being arranged below the dust removal housing (11), the secondary weighing assembly being dynamically connected to the discharge cylinder, the upper side of the interior of the dust removal housing (11) being arranged as a clean air zone (12), and the lower side being arranged as a dusty air zone (13), the clean air zone (12) being connected to the fan (2), and the dusty air zone (13) being connected to the air riser (30); A sealing strip (14), wherein the sealing strip (14) is arranged between the clean air zone (12) and the dusty air zone (13); A driving cylinder three (15), wherein a plurality of the driving cylinders three (15) are provided, and the plurality of driving cylinders three (15) are fixedly arranged in the dust and gas zone (13); A bag frame (16), wherein the output end of the driving cylinder three (15) is detachably connected to the bag frame (16), the driving cylinder three (15) is arranged below the bag frame (16), a plurality of dust removal bags (17) are arranged on the bag frame (16), and the bag frame (16) is arranged in the dust and gas zone (13); A weighing frame (18), the weighing frame (18) being fixedly arranged in the dust and gas zone (13), the weighing frame (18) being arranged between the plurality of dust removal bags (17), and a plurality of weighing sensors (29) being fixedly arranged on one side of the weighing frame (18) close to the bag frame (16); A dust cleaning component is arranged on the dust removal housing (11), and is used to clean the coal powder on the dust removal bag (17).

6. The mining cuttings sampling device based on negative pressure adsorption technology according to claim 5 is characterized in that: The dust removal component comprises: A gas cylinder (19), wherein the gas cylinder (19) is arranged on the dust removal housing (11); A dust removal pipe (20), wherein the dust removal pipe (20) is fixedly arranged in the clean air zone (12), the dust removal pipe (20) is connected to the gas cylinder (19), and a plurality of air blowing ports are arranged on the dust removal pipe (20), and the plurality of air blowing ports correspond one-to-one to the tops of the plurality of dust removal bags (17).

7. The mining cuttings sampling device based on negative pressure adsorption technology according to claim 6 is characterized in that: The secondary weighing assembly comprises: A dust collecting bin (21), the dust collecting bin (21) is vertically slidably connected to the discharge tube, and the lower part of the dust collecting bin (21) is arranged in an arc shape; A strip groove (22), the strip groove (22) being opened on one side of the dust collecting bin (21), and the strip groove (22) being arranged vertically; An ash discharge port (23), the ash discharge port (23) being disposed on a side of the dust collecting bin (21) away from the strip-shaped groove (22); A motor (24), the motor (24) being arranged at the side of the dust collecting bin (21), the output end of the motor (24) passing through the strip-shaped groove (22), the output end of the motor (24) being provided with a spiral blade, the spiral blade being rotatably arranged in the dust collecting bin (21); a shielding sheet (25), the shielding sheet (25) being fixedly mounted on the motor (24), the shielding sheet (25) being arranged between the motor (24) and the spiral blade, the shielding sheet (25) being in contact with the strip-shaped groove (22); The angle of Figure 7 is flat, not three-dimensional and not easy to understand A measuring component is arranged on the dust collecting bin (21), and is used to measure the weight change of dust in the dust collecting bin (21).

8. The mining cuttings sampling device based on negative pressure adsorption technology according to claim 7 is characterized in that: The measuring component comprises: A support plate (26), wherein a plurality of the support plates (26) are provided, and the plurality of the support plates (26) are fixedly arranged on the dust collecting bin (21); A driving cylinder four (27), wherein a plurality of the driving cylinders four (27) are provided, and a driving cylinder four (27) is provided below each of the support plates (26), and an output end of each of the driving cylinders four (27) is detachably connected to each of the support plates (26); Weighing sensor three (28), each of the support plates (26) is provided with a weighing sensor three (28).

9. A method for sampling mining drill cuttings based on negative pressure adsorption technology, using the mining drill cuttings sampling device based on negative pressure adsorption technology as claimed in claim 8, characterized in that: The following steps are involved: S1. Drill cuttings separation: the fan (2) sucks gas out of the dust removal housing (11), so that negative pressure is formed in the dust removal housing (11). Since the dust removal housing (11) is connected to the cyclone separator (1), the negative pressure airflow will suck the drill cuttings at the drilling rig through the inlet; S2. Drill cuttings collection: the negative pressure airflow drives the drill cuttings to move in the cyclone separator (1), and large particles of drill cuttings rotate in the cyclone separator (1) and fall onto the tray 1 (6) through the particle outlet; S3, one-time weighing: the weighing sensor 1 (7) weighs the drill cuttings falling on the tray 1 (6); S4, coal powder collection: the airflow in the cyclone separator (1) drives part of the coal powder to enter the dust gas zone (13) through the riser (30), and the coal powder is filtered and separated by the dust bag (17) when the gas passes through the dust bag (17); S5, coal powder cleaning: the gas cylinder (19) fills the dust removal pipe (20) with high-pressure gas, and the gas is blown toward the dust removal bag (17) through the blowing port, and part of the dust on the dust removal bag (17) falls into the dust collection bin (21); S6, secondary weighing: the fan (2) stops sucking in air, the output end of the driving cylinder (15) shortens so that the bag frame (16) is separated from the sealing strip (14), and as the output end of the driving cylinder (15) shortens, the bag frame (16) contacts the weighing sensor (29), and the weighing sensor (29) weighs the bag frame (16), the dust bag (17) and the residual coal powder; S7, three weighings: the coal powder falls into the dust collecting bin (21), the output end of the driving cylinder four (27) shortens, the support plate (26) drives the dust collecting bin (21) to move downward, and the output end of the motor (24) slides in the strip groove (22). As the output end of the driving cylinder four (27) shortens, when the support plate (26) contacts the weighing sensor three (28), the output end of the driving cylinder four (27) separates from the support plate (26), and the weighing sensor three (28) weighs the dust collecting bin (21) and the coal powder therein.

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