A fully automatic grinding, sieving and cleaning device

Abstract

This invention relates to a fully automatic grinding, sieving, and cleaning device, comprising a sieving assembly, a feeding device, and a vibrating table. A tilting assembly is mounted on the vibrating table, and the tilting end of the tilting assembly is equipped with a grinding pot body. The grinding pot lid is detachably installed at the opening of the grinding pot body. The sieving assembly includes a screen pot, a seventh rotating assembly, and a lid vibrator. The opening of the screen pot is located on the rotation path of the integrated grinding pot body and lid, driven by the tilting assembly. Through repeated operation, it ensures that the particle size of the coal sample fully meets the predetermined requirements after multiple fine grinding processes. This solution enables fully automatic grinding and cleaning of coal samples, completely eliminating the problem of human contact with materials and reducing the risk of fraud to zero. Furthermore, it prevents mixing of coal samples from the preceding and following processes, significantly improving grinding efficiency.

Description

Technical Field

[0001] This invention relates to the field of coal and ore sample processing technology, specifically to a fully automatic grinding, sieving, and cleaning device. Background Technology

[0002] The coal (or mining industry) requires analysis of various components of coal, including moisture, ash, volatile matter, fixed carbon, calorific value, and sulfur content. To meet these analytical requirements, coal sample preparation is necessary before analysis.

[0003] The main purpose of coal sample preparation is to ensure that the samples extracted from a large amount of coal are representative. The sample preparation machine grinds and screens the coal to prepare coal samples for analysis and testing, so as to accurately reflect the overall quality characteristics of the coal and provide reliable basic data for subsequent related work.

[0004] For example, the "Laser Online Coal Quality Detection and Analysis System" disclosed in patent publication number CN205246369U can realize automatic coal sampling, automatic tablet preparation, and automatic laser detection and analysis during the coal transportation process. It can closely link the coal mining, preparation, and analysis processes, and encapsulate them through a sealed device. It has a fast detection speed, a large sample volume, and can eliminate human factors, thereby realizing rapid online coal quality analysis.

[0005] However, manual grinding and sieving is prone to fraud and is time-consuming and labor-intensive. Fully automatic sample preparation machines cannot automatically sieve samples. Fully automatic sample preparation machines have high requirements for materials. For example, wet coal and coal slime cannot be sampled using fully automatic sample preparation machines. Furthermore, when encountering sticky coal during sample preparation and grinding, it is impossible to clean it thoroughly. After grinding and cleaning, the cleaning status inside the grinding pot cannot be clearly seen, which can easily lead to mixing with the next coal sample. If sticky coal is encountered, it is necessary to wait for several hours and run the grinding pot empty for cleaning to achieve a thorough cleaning. Since fully automatic sample preparation machines operate on an assembly line process, this will significantly affect the sample preparation efficiency. In addition, if the grinding device malfunctions, the entire assembly line will stop.

[0006] The existing fully automated sample preparation machine's grinding pot inlet and outlet channels are prone to blockages in the pipes or magnetic vibration chute, preventing coal samples from leaving or entering the grinding pot. The grinding pot is also highly susceptible to mixing with the next coal sample, which is difficult to detect. Furthermore, the maintenance of the grinding pot is very troublesome, requiring almost daily unscrewing to open the grinding pot for inspection and cleaning of residual samples, followed by rescrewing. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a fully automatic grinding, sieving, and cleaning device to solve the aforementioned problems.

[0008] This invention provides the following technical solution:

[0009] A fully automatic grinding, sieving, and cleaning device includes:

[0010] The feeding device includes a feeding funnel and a first rotating component for driving the feeding funnel to rotate and adjust its position;

[0011] A vibration table, wherein a tilting assembly is installed on the vibration table, and the tilting end of the tilting assembly is provided with a grinding pot body;

[0012] A grinding pot lid is detachably installed at the opening of the grinding pot body. The grinding pot lid includes a lower lid layer and an upper lid layer that are coaxially rotatably coupled. The lower lid layer is located on the side closer to the grinding pot body than the upper lid layer. The lower lid layer and the upper lid layer are respectively provided with a lower blade ring and an upper blade ring. The lower blade ring and the upper blade ring are respectively provided with a ring of conical blades, and the conical structures of the two sets of conical blades are located on opposite sides of each other. The rotational coupling of the two sets of conical blades realizes the opening and closing of the grinding pot body opening.

[0013] The sieving assembly includes a sieve pot, a seventh rotating assembly, and a pot lid vibrator. The opening of the sieve pot is located on the rotation path of the grinding pot body and the grinding pot lid, which are connected as a whole, driven by the flipping assembly. The output end of the seventh rotating assembly is connected to a friction block. The rotation of the friction block drives the sieve pot to rotate through friction. The opening of the sieve pot is threadedly connected to the upper layer of the pot lid.

[0014] Preferably, a cone is provided at the lower outlet of the feed funnel, and an annular conveying channel is formed between the lower outlet of the feed funnel and the cone. The cone is driven by a second rotating assembly, and a paddle extending radially is provided on the side wall of the cone.

[0015] Preferably, a clamping device is installed on the vibration table. The clamping device includes a first pressure rod, a fifth rotating component, a ramp block, a pressure block, and a second lifting device. One end of the first pressure rod is connected to the output end of the fifth rotating component, and the other end is hinged to a locking rod. A reset spring is connected between the locking rod and the first pressure rod. The second lifting device is used to drive the pressure block to rise and fall. The pressure block and the ramp block cooperate to lock and fix the hook end of the locking rod. An elastic pressure ball that cooperates with the middle of the upper layer of the pot lid is provided in the middle of the first pressure rod.

[0016] Preferably, it also includes a cleaning device, which includes a first lifting device and a third rotating component that drives the first lifting device to rotate and adjust its position. The downward output end of the first lifting device is provided with a top plate that is driven to rotate by the fourth rotating component. The bottom of the top plate is provided with multiple sets of radially distributed air nozzles and spring telescopic rods. The outer wall of the telescopic end of the spring telescopic rod is provided with a brush.

[0017] The top plate is equipped with a dust cover at the bottom and a dust suction port connected to an external negative pressure air source. The air blowing nozzle is connected to an external positive pressure air source. The dust suction port, air blowing nozzle, and spring telescopic rod are located inside the dust cover.

[0018] Preferably, a first telescopic device is installed on the vibration table, and a first pusher with a U-shaped structure is connected to the output end of the first telescopic device. A first push rod is provided on the outer side wall of the upper layer of the pot lid. The extension and retraction of the first telescopic device drives the upper layer of the pot lid to rotate through the cooperation of the first pusher and the first push rod.

[0019] Preferably, a sealing gasket with a matching structure is provided on the side of the lower blade ring that abuts against the upper blade ring. The sealing gasket has a raised edge, and the sealing gasket is pressed onto the lower blade ring by a metal pressure plate, avoiding the raised part.

[0020] The upper leaf ring has a flexible scraper on the side wall of the conical blade.

[0021] Preferably, the sieving assembly further includes a support ring, which is connected to the base by a plurality of evenly distributed support springs. A magnetic baffle is provided on the support ring, which is magnetically attracted to the screen pot. A funnel portion is provided at the bottom of the screen pot, which is inserted into the support ring. A second telescopic device is installed on the base, and the telescopic end of the second telescopic device is connected to the support ring by a pull rope.

[0022] Preferably, the support ring is connected to a second pressure rod that is driven to rotate by a sixth rotating component. The second pressure rod is connected to a pressure cover by several connecting springs. A rubber pad is adhered to the side of the pressure cover near the screen pot. The pressure cover is used to open and close the opening of the screen pot. A first drive motor is installed on the base. The output end of the first drive motor is connected to a self-locking rod.

[0023] Preferably, the device also includes a pot lid vibrator, which includes a second drive motor and a turntable connected to the output end of the second drive motor. A second link is connected to the off-center part of the turntable via a first link. An iron striking wheel is connected to the free end of the second link. A magnetic plate is provided on the outer wall of the upper layer of the pot lid. The iron striking wheel is used to strike the magnetic plate on the upper layer of the pot lid.

[0024] Preferably, the base is equipped with a third telescopic device and a fourth telescopic device. The telescopic end of the third telescopic device is connected to a second pusher. The telescopic movement of the third telescopic device drives the upper layer of the pot lid to rotate through the cooperation of the second pusher and the first push rod. The telescopic end of the fourth telescopic device is connected to a pot lid limiting rod. A lower limiting ring is provided on the outer wall of the lower layer of the pot lid. When the fourth telescopic device drives the pot lid limiting rod to extend, it passes through the lower limiting ring.

[0025] Currently, fully automated sample preparation machines are prone to blockages in the inlet and outlet channels of the grinding pot, either in the pipes or the magnetic vibration chute, preventing coal samples from exiting or entering the grinding pot. The grinding pot is also highly susceptible to mixing with subsequent coal samples, which is difficult to detect. Furthermore, maintaining the grinding pot is extremely cumbersome, requiring almost daily unscrewing and opening to inspect and clean out any remaining samples before re-screwing. This invention offers the following beneficial technical advantages:

[0026] The blades on the lower and upper leaf rings are conical in shape, facing away from each other. With the help of the vibration table, they prevent coal samples from accumulating and lingering during the process of entering and exiting the ring, thus preventing the coal samples from the two processes from mixing.

[0027] The rotation of two sets of conical blades is coordinated to open and close the opening of the grinding pot, preventing the powdery coal sample generated during the grinding process from scattering inside the grinding pot and improving the sample preparation accuracy.

[0028] By operating the tilting mechanism, the grinding pan body and lid can be precisely moved to the top opening of the screen pan, allowing most of the coal sample particles that have reached the grinding time standard to be smoothly poured into the screen pan. After the lid and grinding pan body are unlocked and separated, the coal sample particles are pushed into the screen pan by the lid vibrator. Subsequently, the grinding pan is tilted over the lid and locked, and then the grinding pan body and lid are tilted back to the vibrating table to continue further grinding of the coal sample. Through repeated operations, it is ensured that the particle size of the coal sample fully meets the predetermined requirements after multiple fine grinding processes.

[0029] This solution enables fully automated grinding, sieving, and cleaning of coal samples, completely eliminating the need for human contact with materials and reducing the risk of fraud to zero. Furthermore, it prevents mixing of coal samples from the preceding and following processes, significantly improving grinding efficiency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention;

[0031] Figure 2 This is a first-view structural schematic diagram of the feeding device of the present invention;

[0032] Figure 3 This is a second-view structural schematic diagram of the feeding device of the present invention;

[0033] Figure 4 This is a schematic diagram of the cleaning device of the present invention;

[0034] Figure 5 This is a first-view structural schematic diagram of the cleaning device of the present invention;

[0035] Figure 6 This is a second-view structural schematic diagram of the cleaning device of the present invention;

[0036] Figure 7 This is a first-view schematic diagram of the components on the vibration table of the present invention.

[0037] Figure 8 This is a second-view schematic diagram of the components on the vibration table of the present invention.

[0038] Figure 9 This is a first-view schematic diagram of the clamping device of the present invention;

[0039] Figure 10 This is a second-view schematic diagram of the clamping device of the present invention;

[0040] Figure 11 This is a schematic diagram of the exploded structure of the lower and upper layers of the pot lid of the present invention;

[0041] Figure 12 This is a schematic diagram of the structure of the lower layer of the pot lid, the lower blade ring, and the metal pressure plate of the present invention.

[0042] Figure 13 This is a schematic diagram of the first state structure of the sieving component of the present invention;

[0043] Figure 14 This is a schematic diagram of the second state structure of the sieving component of the present invention;

[0044] Figure 15 This is a schematic diagram of the second telescopic device, support ring, and screen pot of the present invention.

[0045] Figure 16 This is a schematic diagram of the first state of the grinding pot lid and the screen pot of the present invention in conjunction;

[0046] Figure 17 This is a schematic diagram of the second state of the grinding pot lid and the screen pot of the present invention.

[0047] Figure 18 This is a schematic diagram of the structure of the pot lid vibrator of the present invention;

[0048] Figure 19 This is a schematic diagram showing the cleaning device, grinding pot lid, and screen pot of the present invention.

[0049] Figure 20 This is a schematic diagram showing the combination of the brush and the grinding hammer and grinding ring inside the grinding pot of the present invention.

[0050] Figure 21 yes Figure 20 Schematic diagram of the structure after removing the grinding hammer and grinding ring;

[0051] Figure 22 This is a schematic diagram of one structure of the electromagnetic lock of the present invention;

[0052] Figure 23This is a schematic diagram of the cooperation between the lower limiting ring and the pot lid limiting rod of the present invention.

[0053] The attached figures are labeled as follows:

[0054] 1. Feeding device; 11. First rotating assembly; 12. Feeding funnel; 13. Cone; 14. Paddle; 15. Second rotating assembly; 2. Cleaning device; 21. Third rotating assembly; 22. Top plate; 221. Dust suction port; 23. First lifting device; 24. Dust cover; 25. Air blowing nozzle; 26. Spring telescopic rod; 261. Brush; 27. Fourth rotating assembly; 3. Grinding pot lid; 31. First telescopic device; 32. First pushing component; 33. Lower lid layer; 331. Lower blade ring; 332. Lower limit ring; 333. Sealing gasket; 334. Metal pressure plate; 34. Upper lid layer; 341. Upper blade ring; 342. First push rod; 343. Flexible scraper; 4. Pressing device; 41. First pressure rod; 42. Fifth rotating assembly; 43. Elastic pressure ball; 44. Clamping rod; 4 5. Inclined block; 46. Pressing block; 47. Second lifting device; 5. Sieving assembly; 51. Base; 52. Screen pot; 521. Support spring; 522. Support ring; 523. Magnetic baffle; 524. Second telescopic device; 53. Second pressing rod; 531. Pressure cover; 532. First drive motor; 533. Self-locking rod; 534. Sixth rotating assembly; 54. Friction block; 55. Seventh rotating assembly; 56. Third telescopic device; 561. Second pushing component; 57. Fourth telescopic device; 571. Pot lid limiting rod; 58. Pot lid vibrator; 581. Second drive motor; 582. Turntable; 583. First connecting rod; 584. Second connecting rod; 585. Iron striking wheel; 586. Magnetic plate; 6. Vibrating table; 61. Tilting assembly; 62. Grinding pot body; 63. Electromagnetic lock. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] A fully automatic grinding, screening, and cleaning device is provided. This solution can be used for the fully automatic grinding and screening of materials such as coal, aluminum ore, and iron ore. The following description uses coal as an example. Figure 1-21 As shown:

[0057] like Figure 1 As shown, it includes a feeding device 1, a cleaning device 2, a vibrating table 6, and a screening assembly 5.

[0058] like Figure 1-3 As shown, the feeding device 1 includes a first rotating assembly 11, a feeding funnel 12, a cone 13, a lever 14, and a second rotating assembly 15. The first rotating assembly 11 drives the feeding funnel 12 to rotate above the vibrating table 6 or to a non-working position. The cone 13 is coaxially arranged at the output port of the feeding funnel 12, and the cone 13 rotates relative to the feeding funnel 12. A circular conveying channel is formed between the cone 13 and the output port of the feeding funnel 12. A vibrator (not shown in the figure) is installed on the feeding funnel 12. A lever 14 extending radially is provided on the side wall of the cone 13. The second rotating assembly 15 is installed on the outer side wall of the feeding funnel 12. The second rotating assembly 15 is used to drive the cone 13 to rotate on the feeding funnel 12.

[0059] During rotation, the paddle 14 can disperse the material and prevent it from splashing due to falling from a high position.

[0060] like Figure 4-6 As shown, the cleaning device 2 includes a third rotating assembly 21, a top plate 22, a first lifting device 23, a dust cover 24, an air blowing nozzle 25, a spring telescopic rod 26, and a fourth rotating assembly 27.

[0061] The third rotating component 21 drives the cantilever beam to rotate. The first lifting device 23 is located at the free end of the cantilever beam, and its downward output end is rotatably connected to the top plate 22. The downward output end of the first lifting device 23 is rotatably connected to the top plate 22, and the output end is also equipped with a fourth rotating component 27 for driving the top plate 22 to rotate.

[0062] The lifting direction of the first lifting device 23 is consistent with the rotation axis of the top plate 22; the top plate 22 and the dust cover 24 form a structure with an internal hollow bottom wall opening. A row of air nozzles 25 are arranged along the direction perpendicular to the rotation axis of the top plate 22 (radially). The air nozzles 25 are connected to an external positive pressure air source; a row of spring telescopic rods 26 are arranged along the direction perpendicular to the rotation axis of the top plate 22 (radially). The outer wall of the telescopic end of the spring telescopic rod 26 is provided with a brush 261. The spring telescopic rod 26 tends to extend under normal conditions; the spring telescopic rod 26, the brush 261 on its outer wall, and the air nozzles 25 are arranged opposite each other inside the dust cover 24; a dust suction port 221 is provided on the top plate 22. One end of the dust suction port 221 is connected to an external negative pressure air source, and the other end of the dust suction port 221 is connected to the inside of the dust cover 24.

[0063] The dust cover 24 can be used to position the lower end of the brush 261 at its downward position, preventing it from going too far down and getting stuck by the conical blades. The end of the spring telescopic rod 26 has a 1 cm long elastic short rod, which also has a brush. The deformable elastic short rod can prevent it from getting stuck when rotating, while ensuring that there are no blind spots in cleaning.

[0064] like Figure 1 , 7 As shown in Figure 8, the top of the vibration table 6 is equipped with a clamping device 4, a first telescopic device 31, and a flipping assembly 61; the first telescopic device 31 is horizontally arranged and its output end is connected to a first pusher 311 with a U-shaped structure; the flipping end of the flipping assembly 61 is provided with a grinding pot body 62, and the grinding pot body 62 contains grinding hammers and grinding rings and other grinding components; when the flipping assembly 61 drives the grinding pot body 62 to flip to the top of the vibration table, it is in an open-facing state;

[0065] like Figure 7-10 As shown, the clamping device 4 includes a first pressure rod 41, a fifth rotating assembly 42, an elastic pressure ball 43, a snap-fit ​​rod 44, a ramp block 45, a pressure block 46, and a second lifting device 47.

[0066] One end of the first pressure rod 41 is connected to the output end of the fifth rotating component 42, thereby enabling the fifth rotating component 42 to drive the first pressure rod 41 to rotate. The other end of the first pressure rod 41 is hinged to a locking rod 44. A return spring connects the first pressure rod 41 and the locking rod 44. The rotation angle of the locking rod 44 relative to the first pressure rod 41 is limited to a certain range by the space of the hole at the end of the first pressure rod 41. The elastic force of the return spring keeps the locking rod 44 in a certain position relative to the first pressure rod 41. Figure 9 , 10 The state shown; the free end of the snap-fit ​​rod 44 has a hook structure; the ramp block 45 is fixed on the top of the vibration table 6; the second lifting device 47 uses a screw drive structure to drive the pressure block 46 to rise and fall vertically; the elastic pressure ball 43 is set in the middle of the bottom wall of the first pressure rod 41.

[0067] like Figure 7 , 8 As shown in Figures 11 and 12, the grinding pot lid 3 includes a lower lid layer 33 and an upper lid layer 34 that are coaxially rotatably connected. When the grinding pot lid 3 is flipped over to the vibrating table 6, the upper lid layer 34 is located above the lower lid layer 33. When the grinding pot lid 3 is flipped over to the base 51, the lower lid layer 33 is located above the upper lid layer 34.

[0068] Multiple sets of electromagnetic locks 63 are installed on the side wall of the grinding pot body 62. These electromagnetic locks 63 are evenly distributed and, through their respective configurations, securely connect the lower layer 33 of the lid to the grinding pot body 62, or separate them. The structure of the electromagnetic locks 63 can be... Figure 22 As shown, the electromagnetic lock 63 includes a first electric telescopic rod, a threaded rod, and a perforated rod fixed to the lower layer 33 of the lid, all installed on the side wall of the grinding pot body 62. When the grinding pot body 62 and the lower layer 33 of the lid are connected, the first electric telescopic rod extends and inserts into the hole of the perforated rod to achieve a fixed connection. The threaded rod is driven to rotate by the corresponding motor, which drives the first electric telescopic rod to move downward and press the perforated rod of the lower layer 33 of the lid.

[0069] The lower layer 33 of the pot lid has a lower blade ring 331 inside, and the upper layer 34 of the pot lid has an upper blade ring 341 inside. The lower blade ring 331 and the upper blade ring 341 are tightly abutted together. Each of the lower blade ring 331 and the upper blade ring 341 has a ring of conical blades, and the conical structures of the two sets of conical blades are located on opposite sides, while the sides of the two sets of conical blades that are close to each other are tightly abutted together. The sidewall of the conical blades of the upper blade ring 341 is provided with a flexible scraper 343 (such as...). Figure 11 The pink part in the middle), the outer wall of the upper layer 34 of the pot lid is provided with a first push rod 342; the upper surface of the lower blade ring 331 (including the corresponding conical blade) (the side that abuts against the upper blade ring 341) is provided with a sealing gasket 333 and a metal pressure plate 334 from the inside to the outside, and the outer wall of the lower layer 33 of the pot lid is provided with a lower limit ring 332; the sealing gasket 333 (such as the pink part in the middle), the outer wall of the lower layer 33 of the pot lid is provided with a first push rod 342; the upper surface of the lower blade ring 331 (including the corresponding conical blade) is provided with a sealing gasket 333 and a metal pressure plate 334 from the inside to the outside, and the outer wall of the lower layer 33 of the pot lid is provided with a lower limit ring 332; the sealing gasket 333 (such as the pink part in the middle), the outer wall of the upper layer 34 of the pot lid is provided with a first push rod 342; the outer wall ... outer wall of the lower blade ring 331 (including the corresponding conical blade) is provided with a sealing gasket 333 and a Figure 12 The green part of the sealing gasket 333 is adapted to the shape of the lower leaf ring 331 (including the corresponding conical blade). The outer edge of the sealing gasket 333 is raised. The metal pressure plate 334 is adapted to the shape of other parts of the sealing gasket 333 that avoid the outer edge protrusion. Thus, the metal pressure plate 334 presses and fixes the sealing gasket 333 to the lower leaf ring 331 by screws, and the raised part of the outer edge of the sealing gasket 333 is slightly higher than the metal pressure plate 334.

[0070] The rotation of the two sets of conical blades enables the opening and closing of the grinding pot body 62, and the relative rotation angle between the lower blade ring 331 and the upper blade ring 341 is limited.

[0071] like Figure 7 , 8 As shown, the first push rod 342 of the upper layer 34 of the pot lid is positioned inside the first push member 32 of the U-shaped structure.

[0072] like Figure 13-18 As shown, the sieving assembly 5 includes a base 51, a sieve pot 52, a support spring 521, a support ring 522, a magnetic baffle 523, a second telescopic device 524, a second pressure rod 53, a first drive motor 532, a sixth rotating assembly 534, a friction block 54, a seventh rotating assembly 55, a third telescopic device 56, a fourth telescopic device 57, and a pot lid vibrator 58.

[0073] The second telescopic device 524 has two sets distributed on opposite sides of the support ring 522, moving synchronously.

[0074] The support ring 522 is connected to the top of the base 51 by multiple evenly arranged support springs 521. The second telescopic device 524 is installed on the base 51. The telescopic end of the second telescopic device 524 is connected to the support ring 522 by a pull rope. Multiple sets of the second telescopic device 524 are evenly distributed below the support ring 522. The magnetic baffle 523 can be a permanent magnet or an electromagnet installed on the top of the support ring 522 near the vibrating table 6. The magnetic baffle 523 occupies less than half of the support ring 522 and has an arc-shaped structure. The screen pot 52 and the magnetic baffle 523 are magnetically attracted to each other.

[0075] The seventh rotating component 55 is mounted on the top of the base 51, and the friction block 54 is mounted on the output end of the seventh rotating component 55, with the friction block 54 being eccentrically positioned relative to the rotation axis of the seventh rotating component 55.

[0076] Two sets of friction blocks 54 are arranged opposite each other on both sides of the screen pot 52 and move synchronously.

[0077] The sixth rotating component 534 is mounted on the support ring 522. One end of the second pressure rod 53 is rotatably connected to the support ring 522 and is driven to rotate by the sixth rotating component 534. The second pressure rod 53 is connected to the pressure cover 531 through multiple sets of connecting springs. The pressure cover 531 is adapted to the opening of the screen pot 52. The first drive motor 532 is mounted opposite to the base / support ring 522. The output end of the first drive motor 532 is connected to a self-locking rod 533.

[0078] When pressed, the second pressure rod 53 has a barb below the end near the self-locking rod 533, and a mechanical self-locking device is provided below the barb of the second pressure rod 53 in this state.

[0079] The fourth telescopic device 57 is horizontally positioned and fixed relative to the base 51. The telescopic end of the fourth telescopic device 57 is connected to a lid limiting rod 571. The opening of the screen pot 52 is threadedly connected to the upper layer 34 of the lid. A lower limiting ring 332 is provided on the outer wall of the lower layer 33 of the lid, and the lower limiting ring 332 has a through hole for the lid limiting rod 571 to pass horizontally through. Figure 16 , 17 As shown, when the upper layer 34 of the pot lid is threadedly connected to the screen pot 52 as one piece, the pot lid limiting rod 571 and the lower limiting ring 332 are at the same horizontal height.

[0080] The funnel below the screen is equipped with a magnetic baffle, as shown in the picture, which can attract the screen shell and fix the screen position.

[0081] The lower end of the screen pot 52 is equipped with a funnel-shaped structure with a conical structure. The funnel-shaped structure is adapted to the support ring 522, so that the screen pot 52 is inserted into the support ring 522 through the funnel-shaped structure. At the same time, the screen pot 52 and the magnetic baffle 523 are magnetically attracted to each other to improve stability.

[0082] like Figure 18 As shown, the pot lid vibrator 58 includes a second drive motor 581, a turntable 582, a first connecting rod 583, a second connecting rod 584, an iron striking wheel 585, and a magnetic plate 586.

[0083] The second drive motor 581 is fixed relative to the base 51, the second connecting rod 584 slides linearly relative to the base 51, the turntable 582 is installed at the output end of the second drive motor 581, one end of the second connecting rod 584 is equipped with an iron striking wheel 585, and the other end of the second connecting rod 584 is hinged to the edge of the turntable 582 through the first connecting rod 583; one end of the magnet plate 586 is hinged to the outer wall of the lower layer 33 of the pot lid.

[0084] The pot lid vibrator 58 is used to tap and vibrate the pot lid 3 of the grinding pot when it is pouring powder into the mesh screen pot, so that the residual coal powder sample enters the mesh screen pot 52.

[0085] A remote monitoring camera (or visual recognition camera) is installed above the grinding pot body 62 to check whether the coal sample has fallen into the grinding pot body 62 or to check whether it has been cleaned.

[0086] Working principle:

[0087] The first rotating component 11 drives the feed funnel 12 to rotate above the vibrating table 6. At this time, the feed funnel 12 is aligned with the axis of the grinding pot body 62 and the grinding pot lid 3 above the vibrating table 6. The external coal sample is transported into the grinding pot body 62 through the feed funnel 12. During this process, the annular channel formed between the outlet below the feed funnel 12 and the cone 13 facilitates the uniform delivery of the coal sample to the upper surface of the upper blade ring 341 of the upper layer 34 of the lid. During this process, the second rotating component 15 drives the cone 13 to rotate, which in turn drives the paddle 14 to rotate, dispersing the coal sample. The feed funnel 12 vibrates the residual material onto the upper surface of the upper blade ring 341. Finally, the feed funnel 12 rotates back to its original position.

[0088] The extension and retraction of the first telescopic device 31 is achieved by the cooperation of the first pusher 32 and the first push rod 342, which causes the upper layer 34 of the pot lid to rotate relative to the lower layer 33 of the pot lid. The rotation of the upper layer 34 of the pot lid relative to the lower layer 33 of the pot lid causes the two sets of conical blades of the upper blade ring 341 and the lower blade ring 331 to align and open the gap between the conical blades. At this time, the coal sample can pass through the gap between the conical blades and flow downward into the interior of the grinding pot body 62.

[0089] At this time, the conical surface of the upper blade of the upper blade ring 341 is conical to prevent coal sample accumulation. At the same time, the low-frequency slow vibration of the vibration table 6 can shake all the coal sample on the upper surface of the upper blade ring 341 into the interior of the grinding pot body 62. During this process, the top wall of the lower blade ring 331 is tightly sealed with the bottom wall of the upper blade ring 341 through the protrusion of the outer edge of the sealing gasket 333, preventing the coal sample from flowing into the gap between the two sets of conical blades.

[0090] Then, the upper layer 34 of the pot lid rotates in the opposite direction to the lower layer 33 of the pot lid, so that the two sets of conical blades are staggered and can close each other, thus blocking and closing the gap between the conical blades; the upper blade ring 341 and the lower blade ring 331 are sealed together by the protrusion of the outer edge of the sealing gasket 333, which can ensure a tight seal during grinding.

[0091] Then, the fifth rotating component 42 drives the first pressure rod 41 to rotate, and the barbed end of the locking rod 44 slides into the slope of the ramp block 45 between the ramp block 45 and the pressure block 46; then the second lifting device 47 drives the pressure block 46 to move down, and the pressure block 46 and the barbed end of the locking rod 44 cooperate to prevent the locking rod 44 from moving upward and disengaging; at this time, the first pressure rod 41 spans across the grinding pot lid 3, so that the elastic pressure ball 43 in the middle of the first pressure rod 41 is pressed tightly at the center of the upper layer 34 of the lid; thus, the upper layer 34 and the lower layer 33 of the lid are tightly pressed and fixed, and the grinding pot lid 3 and the grinding pot body 62 are pressed tightly on the vibration table 6.

[0092] Then, the grinding hammer and grinding ring in the inner cavity of the grinding pot body 62 work together to grind the coal sample.

[0093] After grinding is completed, the second lifting device 47 drives the pressure block 46 to move upward to the upper limit. Then, the fifth rotating component 42 drives the first pressure rod 41 to rotate in the opposite direction and disengage from the top of the grinding pot lid 3. During this process, the hook end of the unrestricted snap-fit ​​rod 44 rises and resets tightly against the ramp block 45 under the action of the reset spring.

[0094] Subsequently, the flipping component 61 drives the integrated grinding pot body 62 and grinding pot lid 3 to flip to the opening of the sieve pot 52, thus exchanging the positions of the grinding pot body 62 and the grinding pot lid 3. This causes the external thread of the upper layer 34 of the lid to be inserted into the internal thread of the opening of the sieve pot 52. The seventh rotating component 55 drives the friction block 54 to rotate. During one revolution, part of the friction block 54 comes into contact with the sieve pot 52. During this process, the friction force drives the sieve pot 52 to rotate relative to each other. The relative rotation of the sieve pot 52 is connected and integrated with the internal thread of its opening and the external thread of the upper layer 34 of the lid.

[0095] Subsequently, the third telescopic device 56 drives the second pusher 561 to extend. The extension of the second pusher 561, in conjunction with the first push rod 342, causes the upper layer 34 of the pot lid to rotate, aligning the two sets of conical blades and opening the gap between the blades. During this process, the protruding part at the edge of the sealing gasket 333 scrapes off any coal sample that may be attached to the upper surface of the upper blade ring 341. At this time, the ground coal sample inside the grinding pot body 62 can flow downwards into the screen pot 52 through the gap between the conical blades of the lower blade ring 331 and the upper blade ring 341. At this time, the upper surface of the conical blade of the lower blade ring 331 has a conical structure, which can prevent the accumulation of coal sample particles.

[0096] An ultrasonic vibrator or a small vibrator is installed on the grinding pot body 62. It is activated when the opening of the grinding pot body 62 is facing downwards, which helps to shake and separate the coal sample inside.

[0097] Then, the electromagnetic lock 63 on the grinding pot body 62 unlocks, separating the grinding pot body 62 from the lower layer 33 of the grinding pot lid 3. The second telescopic device 524 shortens, pulling the funnel support ring 522 down by 5 cm via the pull rope. At this time, the grinding pot body 62 is no longer obstructed by the grinding hammer and grinding ring falling on the grinding pot lid 3. The grinding pot body 62 is driven by the flipping component 61 to rotate back to its original position on the vibration table 6. Then, the second telescopic device 524 extends and resets.

[0098] The grinding ring and grinding hammer fall on the upper surface of the lower blade ring 331. The fourth telescopic device 57 drives the lid limiting rod 571 to move horizontally and extend, so that the lid limiting rod 571 passes horizontally through the hole of the lower limiting ring 332, thereby preventing the grinding pot lid 3 from rotating when vibrating.

[0099] The second drive motor 581 drives the turntable 582 to rotate. The rotation of the turntable 582 drives the second link 584 to reciprocate linearly via the first link 583. The reciprocating linear motion of the second link 584 drives the iron striking wheel 585 at its free end to push and pull the magnetically attracted magnet plate 586, thereby shaking the grinding pot lid 3. This causes the coal sample powder from the grinding ring, grinding hammer, and various parts of the grinding pot lid 3 to fall into the screen pot 52 below. Visual recognition monitoring is performed by a camera or sufficient vibration time is set based on experience to ensure that the coal sample powder falls into the screen pot 52. The lid vibrator 58 is used to tap and vibrate the grinding pot lid 3 when it is pouring powder into the screen pot 52, causing the remaining coal powder sample to enter the screen pot 52.

[0100] After the coal sample powder enters the screen pot 52, the fourth telescopic device 57 drives the pot lid limiting rod 571 to move horizontally in the opposite direction and retract to its original position. The second telescopic device 524 shortens and pulls the funnel support ring 522 down by 5 cm through the pull rope. At this time, the grinding pot body 62 will not be blocked by the grinding hammer and grinding ring falling on the grinding pot lid 3. The grinding pot body 62 is driven to rotate in the forward direction by the flipping component 61 to be directly above the grinding pot lid 3. The second telescopic device 524 extends and resets, so that the grinding hammer and grinding ring are placed back inside the grinding pot body 62. Then the electromagnetic lock on the grinding pot body 62 is locked, so that the grinding pot body 62 and the lower layer 33 of the grinding pot lid 3 are fixedly connected as one unit.

[0101] Then the seventh rotating component 55 drives the friction block 54 to rotate in the opposite direction, and through friction, the screen pot 52 rotates in the opposite direction. The screen pot 52 rotates in the opposite direction and separates from the upper layer 34 of the pot lid.

[0102] The two sets of conical blades of the upper blade ring 341 and the lower blade ring 331 are staggered and in a closed state. Then, the grinding pot body 62 and the grinding pot lid 3, which are connected as a whole, are controlled to rotate 180 degrees in the opposite direction and return to the original position of the vibration table 6.

[0103] Then, the sixth rotating component 534 drives the second pressure rod 53 to rotate to the top opening of the screen pot 52, so that the pressure cover 53 just closes the top opening of the screen pot 52. The pressure cover 53 is kept tightly closed by the connecting spring. Then, the first drive motor 532 drives the self-locking rod 533 to rotate, so that the self-locking rod 533 presses the free end of the second pressure rod 53, pushing the barb of the free end of the second pressure rod 53 to just insert into the mechanical self-locking device. The barb of the free end of the second pressure rod 53 is pressed into the mechanical self-locking device and locked.

[0104] The output port of the screen pot 52 is equipped with a filter screen. Coal sample particles smaller than the mesh size of the filter screen can pass through the filter screen and fall into the funnel below the filter screen for collection. The screen pot 52 is filled with small steel balls, which are connected to the screen pot 52 by a soft wire to ensure that they do not fall off. During the vibration of the screen pot 52, the small steel balls tap the filter screen with a small amplitude to prevent the mesh holes from being blocked due to the mesh size being too small.

[0105] A vibrator (not shown in the figure) is installed on the support ring 522, which drives the screen pot 52 pressed on the support ring 522 to vibrate, so that the coal sample particles on the filter screen are screened. After the set time is reached, the material on the screen remains in the upper part of the filter screen, and the coal sample particles that have passed through the filter screen of the screen pot 52 are conveyed downward to the container through the lower funnel.

[0106] Before the sixth rotating component 534 controls the pressure cover 53 to disengage from the top opening of the screen pot 52, the first drive motor 532 drives the self-locking rod 533 to continue rotating and press the second pressure rod 53 again, so that the barb at the free end of the second pressure rod 53 separates from the mechanical self-locking device to unlock. Then the sixth rotating component 534 controls the pressure cover 53 to disengage from the top opening of the screen pot 52. In the same way as before, the integrated grinding pot body 62 and grinding pot lid 3 are rotated 180° to reconnect with the top opening of the screen pot 52. After the friction block 54 rotates, it screws the upper part of the screen pot 52 and the grinding pot lid 3 into one piece.

[0107] Then, the integrated grinding pot body 62, grinding pot lid 3, and screen pot 52 are rotated 180° in the opposite direction to return to the original position of the vibration table 6. The vibration table 6 vibrates slowly at low frequency (or a small vibrator is added) to vibrate the coal sample left on the filter screen in the screen pot 52 into the grinding pot body 62. Then, the two sets of conical blades of the lower blade ring 331 and the upper blade ring 341 of the grinding pot lid 3 are controlled to be in a closed state.

[0108] Then, the integrated grinding pot body 62, grinding pot lid 3, and screen pot 52 are rotated 180° in the opposite direction and returned to the base 51, so that the funnel part at the bottom of the screen pot 52 is inserted into the support ring 522. At this time, the screen pot 52 contacts and is attracted to the magnetic baffle 523 welded on the support ring 522, controlling the separation of the grinding pot lid 3 and the screen pot 52, and driving the integrated grinding pot body 62 and grinding pot lid 3 back to the original position of the vibration table 6. The grinding pot lid 3 and grinding pot body 62 are pressed onto the vibration table by the pressing device 4 in the same way as before, and the vibration grinding program is started.

[0109] This completes one cycle. The number of cycles is set by the camera or based on experience to ensure that 100% of the material powder passes through the filter and enters the next stage.

[0110] To prevent coal sample powder from adhering to various components and affecting the next process, causing coal sample mixing, cleaning work is required.

[0111] The third rotating component 21 drives the cantilever beam to rotate, causing the top plate 22 at the free end of the cantilever beam to move above the base 51. Then, the first lifting device 23 drives the top plate 22 to descend. The top plate 22's descent is limited by the cooperation of the dust cover 24 and the lower limit ring 332 of the grinding pot lid 3. At this time... Figure 19 As shown.

[0112] At this time, the top plate 22 and the dust cover 24 work together to cover and enclose the grinding pot lid 3, as well as the grinding hammer and grinding ring on the top of the grinding pot lid 3. Since the spring telescopic rod 26 can freely extend and retract to adapt to and avoid obstacles... Figure 20 As shown.

[0113] At this time, the blades of the grinding pot lid 3 are in the closed state.

[0114] The fourth rotating component 27 drives the top plate 22 to rotate, which in turn drives a row of spring telescopic rods 26 below it to rotate. The rotation of the row of spring telescopic rods 26 cleans the grinding hammer and grinding ring with a brush. At the same time, external compressed air can be sprayed out through a row of air blowing nozzles 25. The external negative pressure source extracts the air containing coal sample powder inside the dust cover 24 through the dust suction port 221.

[0115] Compressed air is ejected from the air nozzle 25 and vacuumed simultaneously from the suction port 221. The top plate rotates 360° to complete one cycle. The number of cleaning cycles can be set via camera based on experience or by raising the cleaner. The same method is used to clean the inside of the grinding pot body 62, which is separated from the lid 3 on the vibration table. After cleaning, the grinding pot body 62 rotates to be directly above the lid, and the electromagnetic lock is engaged. The grinding pot body 62 then rotates back to the vibration table, bringing the lid 3 back to the vibration table 6.

[0116] Afterwards, the cleaner blows and vacuums the inside of the screen pot 52 located above the support ring 522 with compressed air. The screen vibrates for 3 seconds, and the compressed air blows and vacuums once, completing one cycle. The number of cycles is then set based on experience or by using a camera to check. After the set number of cycles is reached, the grinding pot body 62 brings the screen pot 52 back above the vibrating table 6. The cleaner blows and vacuums the other side of the filter screen three times. The screen pot 52 then returns to the support ring 522, and the cleaner blows and vacuums the inside of the screen pot 52 with compressed air. Finally, the cleaner blows and vacuums the upper conical blades twice to thoroughly clean the residual material powder. If it is not cleaned completely, the above operation can be repeated.

[0117] When the grinding pot lid 3 is placed on the vibration table 6, the conical side of the conical blade on the upper blade ring 341 is cleaned; when the grinding pot lid 3 is placed above the base 51, the conical side of the conical blade on the lower blade ring 331 is cleaned.

[0118] Because the end of the telescopic rod 26 has a 1 cm long elastic rod, the elastic rod can deform elastically to adapt to the conical side of the blade, thus cleaning the uneven surface. During the cleaning process, the blades of the grinding pot lid 3 are in a closed state.

[0119] The embodiments described above are merely illustrative of specific implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A fully automatic grinding, sieving, and cleaning device, characterized in that, include: The feeding device (1) includes a feeding funnel (12) and a first rotating component (11) that drives the feeding funnel (12) to rotate and adjust its position; A vibration table (6) is provided, on which a flipping assembly (61) is installed, and a grinding pot body (62) is provided at the flipping end of the flipping assembly (61). The grinding pot lid (3) is detachably installed in the opening of the grinding pot body (62). The grinding pot lid (3) includes a lower lid layer (33) and an upper lid layer (34) that are coaxially rotatably coupled. The lower lid layer (33) is located on the side closer to the grinding pot body (62) relative to the upper lid layer (34). The lower lid layer (33) and the upper lid layer (34) are respectively provided with a lower leaf ring (331) and an upper leaf ring (341). The lower leaf ring (331) and the upper leaf ring (341) are respectively provided with a ring of conical blades. The conical structure of the two sets of conical blades is located on the opposite side of each other. The rotational coupling of the two sets of conical blades realizes the opening and closing of the opening of the grinding pot body (62). The sieving assembly (5) includes a sieve pot (52), a seventh rotating assembly (55), and a pot lid vibrator (58). The opening of the sieve pot (52) is located on the rotation path of the grinding pot body (62) and the grinding pot lid (3) which are connected as a whole by the flipping assembly (61). The output end of the seventh rotating assembly (55) is connected to a friction block (54). The rotation of the friction block (54) drives the sieve pot (52) to rotate through friction. The opening of the sieve pot (52) is threadedly connected to the upper layer (34) of the pot lid.

2. The fully automatic grinding, sieving, and cleaning device according to claim 1, characterized in that, A cone (13) is provided at the lower outlet of the feed hopper (12), and a circular conveying channel is formed between the lower outlet of the feed hopper (12) and the cone (13). The cone (13) is driven by a second rotating assembly (15), and a paddle (14) extending radially is provided on the side wall of the cone (13).

3. The fully automatic grinding, sieving, and cleaning device according to claim 1, characterized in that, A clamping device (4) is installed on the vibration table (6). The clamping device (4) includes a first pressure rod (41), a fifth rotating component (42), a ramp block (45), a pressure block (46), and a second lifting device (47). One end of the first pressure rod (41) is connected to the output end of the fifth rotating component (42), and the other end is hinged to a snap-fit ​​rod (44). A reset spring is connected between the snap-fit ​​rod (44) and the first pressure rod (41). The second lifting device (47) is used to drive the pressure block (46) to rise and fall. The pressure block (46) and the ramp block (45) cooperate to snap-fit ​​and fix the hook end of the snap-fit ​​rod (44). An elastic pressure ball (43) that cooperates with the middle of the upper layer (34) of the pot lid is provided in the middle of the first pressure rod (41).

4. The fully automatic grinding, sieving, and cleaning device according to claim 1, characterized in that, It also includes a cleaning device (2), which includes a first lifting device (23) and a third rotating component (21) for driving the first lifting device (23) to rotate and adjust its position. The downward output end of the first lifting device (23) is provided with a top plate (22) driven to rotate by a fourth rotating component (27). The bottom of the top plate (22) is provided with multiple sets of radially distributed air nozzles (25) and spring telescopic rods (26). The outer wall of the telescopic end of the spring telescopic rod (26) is provided with a brush (261). The top plate (22) is provided with a dust cover (24) at the bottom. The top plate (22) is provided with a dust suction port (221) connected to an external negative pressure air source. The blowing nozzle (25) is connected to an external positive pressure air source. The dust suction port (221), the blowing nozzle (25) and the spring telescopic rod (26) are located inside the dust cover (24).

5. The fully automatic grinding, sieving, and cleaning device according to claim 1, characterized in that, The vibration table (6) is equipped with a first telescopic device (31). The output end of the first telescopic device (31) is connected to a first pusher (32) with a U-shaped structure. The outer wall of the upper layer (34) of the pot lid is provided with a first push rod (342) extending outward. The extension and retraction of the first telescopic device (31) is achieved by the cooperation of the first pusher (32) and the first push rod (342) to drive the upper layer (34) of the pot lid to rotate.

6. The fully automatic grinding, sieving, and cleaning device according to claim 1, characterized in that, A sealing gasket (333) with a matching structure is provided on the side of the lower leaf ring (331) that abuts against the upper leaf ring (341). The sealing gasket (333) is raised at the edge and is pressed onto the lower leaf ring (331) by a metal pressure plate (334) to avoid the raised part. The upper blade ring (341) has a tough scraper (343) on its conical blade sidewall.

7. The fully automatic grinding, sieving, and cleaning device according to claim 1, characterized in that, The sieving assembly (5) also includes a support ring (522), which is connected to the base (51) by a number of evenly distributed support springs (521). A magnetic baffle (523) is provided on the support ring (522), which is magnetically attracted to the screen pot (52). The lower part of the screen pot (52) is provided with a funnel part that is inserted into the support ring (522). A second telescopic device (524) is installed on the base (51), and the telescopic end of the second telescopic device (524) is connected to the support ring (522) by a pull rope.

8. The fully automatic grinding, sieving, and cleaning device according to claim 7, characterized in that, The support ring (522) is connected to a second pressure rod (53) driven to rotate by a sixth rotating component (534). The second pressure rod (53) is connected to a pressure cover (531) by several connecting springs. A rubber pad is attached to the side of the pressure cover (531) near the screen pot (52). The pressure cover (531) is used to open and close the opening of the screen pot (52). A first drive motor (532) is installed on the base (51). The output end of the first drive motor (532) is connected to a self-locking rod (533).

9. The fully automatic grinding, sieving, and cleaning device according to claim 7, characterized in that, It also includes a pot lid vibrator (58), which includes a second drive motor (581) and a turntable (582) connected to the output end of the second drive motor (581). The turntable (582) is connected to a second link (584) via a first link (583) at its off-center. The free end of the second link (584) is connected to an iron striking wheel (585). A magnetic plate (586) is provided on the outer wall of the upper layer (34) of the pot lid. The iron striking wheel (585) is used to strike the magnetic plate (586) of the upper layer (34) of the pot lid.

10. The fully automatic grinding, sieving, and cleaning device according to claim 7, characterized in that, The base (51) is equipped with a third telescopic device (56) and a fourth telescopic device (57). The telescopic end of the third telescopic device (56) is connected to a second pusher (561). The telescopic movement of the third telescopic device (56) is driven by the cooperation of the second pusher (561) and the first push rod (342) to rotate the upper layer (34) of the pot lid. The telescopic end of the fourth telescopic device (57) is connected to a pot lid limiting rod (571). A lower limiting ring (332) is provided on the outer wall of the lower layer (33) of the pot lid. When the fourth telescopic device (57) drives the pot lid limiting rod (571) to extend, it passes through the lower limiting ring (332).

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