A coal powder sampling device

Abstract

The present application relates to the technical field of coal dust sampling equipment, and proposes a coal dust sampling device, including a mounting beam arranged on a conveying device, a cylinder 1 that can move up and down is provided on the mounting beam, a sampling assembly is provided at the lower end of the telescopic shaft of the cylinder 1, a dust-proof touch assembly is provided in the middle of the telescopic shaft for preventing dust and opening the sampling assembly and can move a certain distance relative to the telescopic shaft, and two groups of sampling assemblies for receiving and packaging samples are also provided on the mounting beam, and the two groups of sampling assemblies are respectively located on both sides of the sampling assembly. The beneficial effects of the present application are: the sampling assembly can be pushed up and down by the cylinder 1 to facilitate sampling, and in the process of the sampling assembly moving downward, the dust-proof touch assembly can firstly cause coal dust to fly, and secondly, after the sampling is completed, the sampling assembly can be triggered to open after moving upward a certain distance to release the sample into the sampling assembly, and the two groups of sampling assemblies can cooperate with the sampling assembly to automatically collect and package the sample, and the structural design is ingenious.

Description

Technical Field

[0001] The present application relates to the technical field of coal powder sampling, and in particular to a sampling device capable of automatically performing two sets of sampling and packaging. Background Art

[0002] my country has verified recoverable coal reserves of 114.5Gt, ranking third in the world's verified recoverable coal reserves. However, the types of coal that can be used for coking - gas, fat, coke, lean and lean - are relatively small, accounting for only 27.6% of them; and the main types of coal used for coking - fat coal, coking coal and lean coal - have even fewer reserves, accounting for only about 14.6% of the total reserves. Therefore, around 2018, my country defined these three types of coking coal as scarce coal types.

[0003] On the one hand, China's reserves are low. On the other hand, compared with other major coal-producing countries in the world, my country's coal resources have a higher average ash content, generally between 20% and 45%. This also exacerbates the scarcity of my country's coking coal resources after washing. Therefore, based on the endowment of coal resources and the conservation of resources, my country has always been a major global importer of coking coal.

[0004] Coking coal requires a high ash content, typically between 8% and 13%. To meet this requirement, three products must be produced during washing: clean coal (for coking), middlings, and gangue (impurities). Middlings, a combination of coal and gangue, are currently often used as thermal coal. However, this represents a significant waste of scarce coal resources.

[0005] In addition, since 2021, global inflation and commodity prices have risen across the board, and the price gap between coking clean coal and by-product medium coal has continued to widen, with the maximum price difference between the two reaching about 3,000 yuan / t.

[0006] Therefore, whether based on the aforementioned protective development of scarce resources, reducing coal imports and increasing energy security, or based on the economic benefits of coal preparation plants, it is necessary to use crushing and grinding methods to fully separate the middlings from the gangue in the washing of scarce coals, and then sort and recover the clean coal. During the recovery process, the coal powder needs to be sampled and tested.

[0007] However, the inventors have found that the sampling devices in the prior art generally only have one sample for the same sampling, and are not capable of performing sampling, subpackaging and packaging at the same time, and the degree of automation is not high. Summary of the Invention

[0008] The present application proposes a coal powder sampling device, which solves the above-mentioned problems in the related art. It can automatically take samples twice at the same time and package them separately, and has simple operation and high degree of automation.

[0009] To this end, the technical solution adopted by the coal powder sampling device of this application is as follows:

[0010] A coal powder sampling device includes a mounting beam arranged on a conveying device, a cylinder 1 being provided on the mounting beam, a sampling assembly being provided at the lower end of the telescopic shaft of the cylinder 1, a dustproof touch assembly being provided at the middle portion of the telescopic shaft for preventing dust and opening the sampling assembly, two groups of sampling assemblies for receiving and packaging samples being further provided on the mounting beam, the two groups of sampling assemblies being located on both sides of the sampling assembly, the dustproof touch assembly being connected to the telescopic shaft via a connecting assembly, the connecting assembly including a limit plate arranged on the telescopic shaft and a spring sleeved on the telescopic shaft, one end of the spring being fixed to the lower side wall of the limit plate, and the other end being fixed to the dustproof touch assembly, and also including an upper limit block and a lower limit rod arranged on the mounting beam.

[0011] By adopting the above technical solution: the sampling component can be pushed up and down by the cylinder to facilitate sampling. During the downward movement of the sampling component, the dust-proof touch component can prevent coal powder from flying. Secondly, after the sampling is completed, the sampling component can move upward a certain distance to trigger the sampling component to open and place the sample into the sampling component. The two groups of sampling components can cooperate with the sampling component to automatically collect and package the sample. The structural design is ingenious and the degree of automation is high.

[0012] By adopting the above technical solution: through the connecting component, the dustproof touch component and the telescopic shaft can be relatively displaced, and the relative displacement can be limited up and down so that the sampling component can be subsequently triggered to open the sample.

[0013] The upper limit block can limit the upward position of the dust-proof touch assembly, and the lower limit rod can limit the downward position of the dust-proof touch assembly, so as to facilitate relative movement with the telescopic shaft to trigger the sampling assembly.

[0014] Optionally, the dustproof touch assembly includes a dustproof cover arranged on the telescopic shaft, the dustproof cover is movable relative to the telescopic shaft, and a touch piece for opening the sampling assembly is provided at the lower part of the dustproof cover.

[0015] By adopting the above technical solution: the dust cover is in a downward trumpet shape, and the large opening is downward to prevent excessive flying of coal powder during the sampling process. After moving to a certain distance on the telescopic axis, the trigger can open the sampling component to sample the obtained sample into the sampling component.

[0016] Optionally, a slide groove is provided on the telescopic shaft, and the trigger member includes a connecting rod connected to the lower side wall of the dust cover, a cross rod connected to the connecting rod, and a trigger rod is connected to the other end of the cross rod. The cross rod passes through the slide groove, and the trigger rod extends to the interior of the sampling assembly.

[0017] By adopting the above technical solution: after the telescopic shaft moves upward to a certain position, due to the limiting effect of the connecting component, the dust cover no longer moves upward, while the telescopic shaft can continue to move upward. During this process, the trigger rod can open the bottom of the sampling component for lofting.

[0018] Optionally, the sampling assembly includes a sampling box fixed at the bottom of the telescopic shaft, the sampling box is opened on the side facing the wind direction of the coal powder movement, the bottom of the sampling box is rotatably connected to the bottom plate through the torsion shaft, the trigger rod extends to the interior of the sampling box, and a partition is provided in the middle of the sampling box.

[0019] By adopting the above technical solution: the front end opening is set to facilitate sampling, and the bottom plate is connected through the torsion shaft to facilitate the trigger rod to be connected to the bottom plate to form an opening for sampling.

[0020] Optionally, the sample collection component includes a rotating rod rotatably connected to the mounting beam, a cylinder 2 is provided on the rotating rod, a push rod of the cylinder 2 is detachably connected to a sample collection box, the upper side of the sample collection box is rotatably connected to a cover via a torsion spring, and the front end of the cover is provided with an opening portion that cooperates with the sampling component.

[0021] By adopting the above technical solution: the detachable connection facilitates the replacement of the sample box, the cover is connected by a torsion spring and an opening part is provided on the side of the cover close to the sampling box. When the sample box moves close to the sampling box, the opening part preferentially touches the sampling box to open the cover, and the cover automatically closes during the return process to achieve packaging.

[0022] Optionally, the push rod is provided with an electromagnet capable of adsorbing the sample box.

[0023] By adopting the above technical solution, the sample collection box can be disassembled by turning the electromagnet on and off.

[0024] Optionally, the sampling box is in the shape of an inverted cone, and its side surface can trigger the opening portion of the sample receiving component.

[0025] By adopting the above technical solution, it is easy to trigger the opening part to set out, and it is also convenient for setting out in the later stage.

[0026] Optionally, a staggered auxiliary cover is provided at the lower end of the rotating rod.

[0027] By adopting the above technical solution, the flying of coal ash can be further prevented, and the second cylinder can be supported at the same time. The staggered arrangement can make the two rotating rods unrestricted when rotating.

[0028] The beneficial effects of this application are:

[0029] 1. The cylinder can push the sampling assembly to move up and down to facilitate sampling. During the downward movement of the sampling assembly, the dust-proof touch assembly can prevent coal powder from flying. Secondly, after the sampling is completed, the sampling assembly moves upward for a certain distance, which can trigger the sampling assembly to open and place the sample into the sampling assembly. The two sets of sampling assemblies can cooperate with the sampling assembly to automatically collect and package the sample. The structural design is ingenious and the degree of automation is high.

[0030] 2. Through the connecting component, the dust-proof touch component and the telescopic shaft can be relatively displaced, and the relative displacement can be limited up and down so that the subsequent touch sampling component can be automatically set out. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present application will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0033] Figure 2 For the embodiment of this application Figure 1 The enlarged structural diagram at A in the middle;

[0034] Figure 3 This is a schematic diagram of the structure of the sample collection component and the sampling component in the embodiment of the present application;

[0035] Figure 4 This is a schematic diagram of the side structure of the sampling component of an embodiment of the present application.

[0036] In the figure: 100, conveying equipment; 200, mounting beam; 300, cylinder 1; 310, telescopic shaft; 320, slide; 400, sampling assembly; 410, sampling box; 420, torsion shaft; 430, bottom plate; 440, partition; 500, dust-proof touch assembly; 510, dust cover; 520, touch piece; 521, connecting rod; 522, cross bar; 523, touch rod; 600, sample collection assembly; 610, rotating rod; 620, cylinder 2; 630, sample collection box; 640, torsion spring; 650, sealing cover; 660, opening part; 670, electromagnet; 700, connecting assembly; 710, limit plate; 720, spring; 730, upper limit block; 740, lower limit rod; 800, auxiliary cover; 900, rotating mechanism. DETAILED DESCRIPTION

[0037] The following will be combined with the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] like Figures 1 to 4 As shown, this embodiment proposes a coal powder sampling device, including a mounting beam 200 arranged on a conveying device 100, and a cylinder 300 that can move up and down is provided on the mounting beam 200, and a sampling component 400 is provided at the lower end of the telescopic shaft 310 of the cylinder 300, and a dust-proof touch component 500 is provided in the middle of the telescopic shaft 310 for preventing dust and opening the sampling component 400 and can move a certain distance relative to the telescopic shaft 310. Two groups of sample receiving components 600 for receiving and packaging samples are also provided on the mounting beam 200, and the two groups of sample receiving components 600 are respectively located on both sides of the sampling component 400.

[0039] The principle of this embodiment is: the sampling component 400 can be pushed up and down by the cylinder 300 to facilitate sampling. During the downward movement of the sampling component 400, the dust-proof touch component 500 can prevent the coal powder from flying. Secondly, after the sampling is completed, the sampling component 400 moves upward for a certain distance, which can trigger the sampling component 400 to open and place the sample into the sampling component 600. The two groups of sampling components 600 can cooperate with the sampling component 400 to automatically collect and package the sample. The structural design is ingenious and the degree of automation is high.

[0040] In this embodiment, the dust-proof trigger assembly 500 is connected to the telescopic shaft 310 via a connection assembly 700 that allows for relative displacement. The connection assembly 700 not only allows for relative displacement between the dust-proof trigger assembly 500 and the telescopic shaft 310, but also provides upper and lower limits on this relative displacement, facilitating subsequent triggering of the sampling assembly 400 to release the sample.

[0041] The specific principle is as follows: the connection assembly 700 includes a limit plate 710 mounted on the telescopic shaft 310 and a spring 720 sleeved on the telescopic shaft 310. One end of the spring 720 is fixed to the lower sidewall of the limit plate 710, and the other end is fixed to the dustproof trigger assembly 500. The connection assembly 700 also includes an upper limit block 730 and a lower limit rod 740 mounted on the mounting beam 200. The upper limit block 730 limits the upward position of the dustproof trigger assembly 500, while the lower limit rod 740 limits the downward position of the dustproof trigger assembly 500, facilitating relative movement with the telescopic shaft 310 to trigger the sampling assembly 400 for sample placement.

[0042] In this embodiment, the dust-proof trigger assembly 500 includes a dust cover 510 mounted on the telescopic shaft 310. The dust cover 510 is movable relative to the telescopic shaft 310. A trigger 520 is located at the bottom of the dust cover 510 for opening the sampling assembly 400. The dust cover 510 is shaped like a downward-facing trumpet, with a large opening facing downward to prevent excessive flying of coal dust during the sampling process. After the telescopic shaft 310 moves upward a certain distance, the trigger 520 opens the sampling assembly 400, allowing the sample to be deposited into the sample receiving assembly 600.

[0043] More specifically, the telescopic shaft 310 defines a slot 320. The trigger member 520 includes a connecting rod 521 connected to the lower sidewall of the dust cover 510, a crossbar 522 connected to the connecting rod 521, and a trigger rod 523 connected to the other end of the crossbar 522. The crossbar 522 passes through the slot 320, and the trigger rod 523 extends into the interior of the sampling assembly 400. After the telescopic shaft 310 moves upward to a certain position, the dust cover 510 stops moving upward due to the limiting effect of the connecting assembly 700, while the telescopic shaft 310 can continue to move upward. During this process, the trigger rod 523 can open the bottom of the sampling assembly 400 for sample placement.

[0044] The sampling assembly 400 described in this embodiment includes a sampling box 410 fixed to the bottom of the telescopic shaft 310. The sampling box 410 is opened on the side facing the wind direction of the coal powder movement. The bottom of the sampling box 410 is rotatably connected to the bottom plate 430 through the torsion shaft 420. The trigger rod 523 extends to the interior of the sampling box 410. A partition 440 is provided in the middle of the sampling box 410 to separate the two sampling chambers for sampling and later respectively setting out the samples into two sample receiving boxes 630. The front end opening is set to facilitate sampling. The bottom plate 430 is connected through the torsion shaft 420 to facilitate the trigger rod 523 to be connected to the bottom plate 430 to form an opening for setting out the samples.

[0045] In this embodiment, the sample collection assembly 600 includes a rotating rod 610 rotatably connected to the mounting beam 200. A second cylinder 620 is provided on the rotating rod 610. A push rod of the second cylinder 620 is detachably connected to a sample collection box 630. A cover 650 is rotatably connected to the upper side of the sample collection box 630 via a torsion spring 640. The front end of the cover 650 is provided with an opening portion 660 that cooperates with the sampling assembly 400. The opening portion 660 is in an upward arc shape. The detachable connection facilitates replacement of the sample collection box 630. The cover 650 is connected via the torsion spring 640, and the opening portion 660 is provided on the side of the cover 650 that is closest to the sampling box 410. When the sample collection box 630 moves closer to the sampling box 410, the opening portion 660 preferentially contacts the sampling box 410 to open the cover 650. During the return process, the cover 650 automatically closes to seal the sample.

[0046] In one embodiment of the present invention, a detachable connection method is provided: the push rod is provided with an electromagnet 670 capable of attracting the sample receiving box 630. The sample receiving box 630 can be detached by turning the electromagnet 670 on and off.

[0047] The sampling box 410 is in the shape of an inverted cone, and its side surface can touch the opening portion 660 of the sample receiving assembly 600. This arrangement facilitates touching the opening portion 660 for sample placement and also facilitates later sample placement.

[0048] In this embodiment, the lower end of the rotating rod 610 is provided with a staggered auxiliary cover 800. It can further prevent the flying of coal dust and support the second cylinder 620 at the same time. The staggered arrangement can make the two rotating rods 610 unrestricted when rotating.

[0049] Of course, in order to facilitate operation, a rotation mechanism 900 for driving the rotation of the rotating rod 610 may be further provided at the upper end thereof, such as a servo motor, so that the rotating rod 610 can be rotated to a certain angle.

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

Claims

1. A coal powder sampling device, characterized in that: The invention comprises a mounting beam (200) arranged on a conveying device (100), wherein a cylinder (300) is provided on the mounting beam (200), a sampling assembly (400) is provided at the lower end of a telescopic shaft (310) of the cylinder (300), a dust-proof touch assembly (500) for preventing dust and opening the sampling assembly (400) is provided in the middle of the telescopic shaft (310), and two groups of sample receiving assemblies (600) for receiving and packaging samples are further provided on the mounting beam (200), and the two groups of sample receiving assemblies (600) are respectively located at the sampling assembly (400). 00), the dust-proof touch assembly (500) is connected to the telescopic shaft (310) through a connecting assembly (700), the connecting assembly (700) includes a limit plate (710) provided on the telescopic shaft (310) and a spring (720) sleeved on the telescopic shaft (310), one end of the spring (720) is fixed to the lower side wall of the limit plate (710), and the other end is fixed to the dust-proof touch assembly (500), and also includes an upper limit block (730) and a lower limit rod (740) provided on the mounting beam (200); The dustproof touch assembly (500) comprises a dustproof cover (510) arranged on the telescopic shaft (310), and a touch piece (520) for opening the sampling assembly (400) is provided at the lower portion of the dustproof cover (510); A chute (320) is provided on the telescopic shaft (310), and the trigger member (520) includes a connecting rod (521) connected to the lower side wall of the dust cover (510), a cross rod (522) connected to the connecting rod (521), and a trigger rod (523) is connected to the other end of the cross rod (522). The cross rod (522) passes through the chute (320), and the trigger rod (523) extends to the interior of the sampling assembly (400); The sampling assembly (400) includes a sampling box (410) fixed to the bottom of the telescopic shaft (310), the sampling box (410) is provided with an opening on one side facing the coal powder moving wind direction, the bottom of the sampling box (410) is rotatably connected to a bottom plate (430) via a torsion shaft (420), the trigger rod (523) extends into the interior of the sampling box (410), and a partition (440) is provided in the middle of the sampling box (410); The sample collecting assembly (600) includes a rotating rod (610) rotatably connected to the mounting beam (200), a second cylinder (620) is provided on the rotating rod (610), a push rod of the second cylinder (620) is detachably connected to a sample collecting box (630), an upper side of the sample collecting box (630) is rotatably connected to a cover (650) via a torsion spring (640), and an opening portion (660) is provided at the front end of the cover (650) for cooperating with the sampling assembly (400).

2. A pulverized coal sampling device according to claim 1, characterized in that: The push rod is provided with an electromagnet (670) capable of adsorbing the sample collection box (630).

3. A pulverized coal sampling device according to claim 2, characterized in that: The sampling box (410) is in the shape of an inverted cone, and its side surface can touch the opening portion (660) of the sample receiving component (600).

4. A pulverized coal sampling device according to claim 2, characterized in that: The lower end of the rotating rod (610) is provided with a staggered auxiliary cover (800).

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