Full-automatic grinding, sieving and cleaning device

Abstract

The invention relates to a full-automatic grinding, screening and cleaning device which comprises a screening assembly, a feeding device and a vibration table, an overturning assembly is installed on the vibration table, and a grinding pot body is arranged at the overturning end of the overturning assembly; the grinding pot cover is detachably installed at an opening of the grinding pot body, the screening assembly comprises a screen pot, a seventh rotating assembly and a pot cover vibrator, and the opening of the screen pot is located on the rotating path of the grinding pot body and the grinding pot cover which are driven by the overturning assembly to be connected into a whole; through multiple repeated operations, the granularity of the coal sample completely meets the preset requirement after the coal sample is finely ground for multiple times. According to the scheme, full-automatic grinding and cleaning of the coal sample can be achieved, the trouble that people make contact with materials can be thoroughly eliminated, and the fraud risk in the process is reduced to zero. And the coal samples in the previous and later processes can be prevented from being mixed, so that the grinding efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal sample and ore sample processing, and in particular to a full-automatic grinding, screening and cleaning device. Background Art

[0002] Coal (or mineral industry) requires the analysis of various components of coal quality, including moisture, ash, volatile matter, fixed carbon, calorific value, sulfur, etc. In order to meet the requirements of the analysis, the coal sample raw materials need to be prepared before the analysis.

[0003] The main purpose of coal sampling 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 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 announcement number CN205246369U can realize automatic sampling, automatic tableting and automatic laser detection and analysis of coal during coal transportation. It can closely link the coal mining, processing and chemical links together, and encapsulate them through a closed device. It has a fast detection speed, a large number of detection samples, and can eliminate human factors, thereby realizing rapid online analysis of coal quality.

[0005] However, manual grinding and screening is prone to fraud and is time-consuming and labor-intensive. The fully automatic sample making machine cannot automatically screen the samples. The fully automatic sample making machine has high requirements on materials. For example, wet coal and coal slime cannot be sampled using the fully automatic sample making machine. In addition, when preparing and grinding samples, sticky coal cannot be thoroughly cleaned. After the fully automatic sample making machine has cleaned the powder grinding pot, it is impossible to see the cleaning status of the inside of the powder grinding pot, which is easy to mix with the next coal sample. If sticky coal is encountered, the powder grinding pot needs to be thoroughly cleaned. It is necessary to wait for several hours to let the powder grinding pot idle and clean it before it can be thoroughly cleaned. The fully automatic sample making machine carries out an assembly line procedure, which will greatly affect the sample making efficiency. In addition, if the grinding device fails, the entire assembly line will stop.

[0006] The existing automatic sample preparation machine mill inlet and outlet passages are prone to pipeline or magnetic vibration chute blockage, resulting in coal samples unable to go out of the mill or unable to enter; the mill is very easy to mix with the next coal sample. And it is difficult to find, and the mill is very troublesome to maintain. Almost every day, the screws must be removed to open the mill to check and clean the residual sample inside, and then screwed back on. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a fully automatic grinding, screening and cleaning device to solve the above problems.

[0008] The present invention provides the following technical solutions:

[0009] A fully automatic grinding, screening and cleaning device, comprising:

[0010] A feeding device, the feeding device comprising a feeding hopper and a first rotating assembly driving the feeding hopper to rotate and adjust a position;

[0011] A vibration table, wherein a turning assembly is installed on the vibration table, and a grinding pot body is arranged at the turning end of the turning assembly;

[0012] A mill pot cover, the mill pot cover is detachably mounted on the opening of the mill pot body, the mill pot cover comprises a coaxially rotatable lower layer and an upper layer, the lower layer of the pot cover is located on a side close to the mill pot body relative to the upper layer of the pot cover, the lower layer of the pot cover and the upper layer of the pot cover 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 circle of conical blades, and the conical structures of the two groups of conical blades are located on the sides away from each other, and the rotation cooperation of the two groups of conical blades realizes the opening of the mill pot body to be opened and closed;

[0013] The screening assembly comprises a screen pot, a seventh rotating assembly and a pot cover vibrator, the opening of the screen pot is located on the rotation path of the grinding pot body and the grinding pot cover which are connected in an integrated state and driven by the flip assembly, the output end of the seventh rotating assembly is connected with a friction block, the rotation of the friction block drives the screen pot to rotate through friction force, and the opening of the screen pot is connected with the upper thread of the pot cover.

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

[0015] Preferably, a clamping device is installed on the vibration table, and 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 with a clamping rod, and a reset spring is connected between the clamping rod and the first pressure rod, and the second lifting device is used to drive the pressure block to rise and fall, and the pressure block cooperates with the ramp block to clamp and fix the hook end of the clamping rod, and an elastic pressure ball that cooperates with the middle part of the upper layer of the pot cover is provided in the middle part of the first pressure rod.

[0016] Preferably, a cleaning device is further included, the cleaning device comprising a first lifting device and a third rotating assembly driving the first lifting device to rotate and adjust the position, a top plate driven to rotate by a fourth rotating assembly is provided at the downward output end of the first lifting device, a plurality of groups of radially distributed blowing nozzles and spring telescopic rods are provided at the bottom of the top plate, and a brush is provided on the outer wall of the telescopic end of the spring telescopic rod;

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

[0018] Preferably, a first telescopic device is installed on the vibration table, and the output end of the first telescopic device is connected to a first pushing member of a U-shaped structure, and a first push rod is extended outward from the outer wall of the upper layer of the pot cover. The telescopic movement of the first telescopic device drives the upper layer of the pot cover to rotate through the cooperation of the first pushing member and the first push rod.

[0019] Preferably, a sealing gasket with a matching structure is provided on one side where the lower blade ring abuts against the upper blade ring, and a convexity is provided at the edge of the sealing gasket. The sealing gasket avoids the convexity and is pressed on the lower blade ring through a metal pressing plate;

[0020] The side walls of the conical blades of the upper blade ring are provided with tough scrapers.

[0021] Preferably, the screening assembly also includes a support ring, which is connected to the base through a number of evenly distributed support springs, and a magnet baffle is provided on the support ring, which is magnetically attracted to the screen pot, and a funnel portion that is plugged into the support ring is provided at the lower part of the screen pot, and a second telescopic device is installed on the base, and the telescopic end of the second telescopic device is connected to the support ring through a pull rope.

[0022] Preferably, the support ring is connected to a second pressure rod which is driven to rotate by a sixth rotating component, the second pressure rod is connected to a pressure cover via a number of connecting springs, a layer of rubber pad is adhered to the pressure cover close to the side of 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, and a self-locking rod is connected to the output end of the first drive motor.

[0023] Preferably, it 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, the turntable is connected to a second connecting rod via a first connecting rod at a non-center portion thereof, the free end of the second connecting rod is connected to an iron knocking wheel, a magnet plate is provided on the outer side wall of the upper layer of the pot lid, and the iron knocking wheel is used for knocking the magnet plate on the upper layer of the pot lid.

[0024] Preferably, a third telescopic device and a fourth telescopic device are installed on the base, the telescopic end of the third telescopic device is connected to the second pushing member, and the telescopic movement of the third telescopic device drives the upper layer of the pot cover to rotate through the cooperation of the second pushing member and the first push rod; the telescopic end of the fourth telescopic device is connected to a pot cover limit rod, and a lower limit ring is provided on the outer side wall of the lower layer of the pot cover, and the fourth telescopic device drives the pot cover limit rod to pass through the lower limit ring when extending.

[0025] At present, the inlet and outlet channels of the grinding pot of the fully automatic sample preparation machine are prone to blockage of the pipeline or the magnetic vibration chute, which makes it impossible for the coal sample to go out of the grinding pot or enter; the grinding pot is very easy to mix with the next coal sample. And it is difficult to find. At the same time, the maintenance of the grinding pot is very troublesome. Almost every day, the screws must be removed to open the grinding pot to check and clean the residual samples inside, and then screwed back on. The present invention has the following beneficial technical effects:

[0026] The blades on the lower blade ring and the upper blade ring are conical in structure with one side facing away from each other, and with the cooperation of the vibration table, they prevent the coal samples from accumulating and staying during the process of entering and exiting, thereby preventing the coal samples from the previous and next processes from mixing.

[0027] The rotation of the two sets of conical blades cooperates to open and close the opening of the grinding pot body, preventing the powdered coal sample generated in the grinding process from flying around in the grinding pot body, thereby improving the sample preparation accuracy of the coal sample;

[0028] Through the operation of the flip assembly, the mill pot body and the mill pot cover can be accurately moved to the top opening of the screen pot, so that most of the coal sample particles that have reached the grinding time standard can be smoothly poured into the screen pot. After the pot cover is unlocked and separated from the mill pot body, the coal sample particles can enter the screen pot through the vibration of the pot cover vibrator. Then, after the mill pot is flipped to the top of the pot cover and locked, the mill pot body and the pot cover are flipped back to the vibration table to continue further grinding of the coal sample. Through repeated operations, it is ensured that after multiple fine grindings, the particle size of the coal sample fully meets the predetermined requirements.

[0029] This solution can realize the fully automatic grinding, screening and cleaning of coal samples, completely get rid of the trouble of human contact with materials, and reduce the risk of fraud in this process to zero. It can also prevent the mixing of coal samples in the previous and next processes, greatly improving the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0031] Figure 2 It is a schematic structural diagram of a portion of the feeding device of the present invention from a first viewing angle;

[0032] Figure 3 It is a schematic structural diagram of the feeding device part from a second viewing angle of the present invention;

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

[0034] Figure 5 It is a schematic diagram of the structure of the cleaning device of the present invention from a first perspective;

[0035] Figure 6 It is a schematic structural diagram of the cleaning device of the present invention from a second viewing angle;

[0036] Figure 7 It is a schematic diagram of the first viewing angle of the components on the vibration table of the present invention;

[0037] Figure 8 is a schematic diagram of the cooperation of the components on the vibration table of the present invention from a second viewing angle;

[0038] Fig. 9 is a schematic diagram of the first viewing angle of the clamping device of the present invention;

[0039] Fig.10 is a schematic diagram of the clamping device of the present invention from a second viewing angle;

[0040] Fig.11 It is a schematic diagram of the explosion structure of the lower layer and the upper layer of the pot cover of the present invention;

[0041] Fig.12 It is a schematic diagram of the matching structure of the lower layer of the pot cover, the lower leaf ring and the metal pressing plate of the present invention;

[0042] Fig.13 This is a schematic diagram of the structure of the screening assembly of the present invention in the first state;

[0043] Fig.14 This is a schematic diagram of the structure of the screening assembly of the present invention in the second state;

[0044] Fig.15 It is a schematic diagram of the cooperation between the second telescopic device, the support ring and the screen pot of the present invention;

[0045] Fig.16 It is a schematic diagram of the first state of the mill pot cover and the screen pot of the present invention;

[0046] Fig.17 It is a schematic diagram of the second state of the mill pot cover and the screen pot of the present invention;

[0047] Fig.18 It is a schematic diagram of the structure of the pot cover vibrator of the present invention;

[0048] Fig.19 It is a schematic diagram of the cleaning device, the grinding pot cover and the screen pot of the present invention;

[0049] Fig. 20 It is a schematic diagram of the coordination between the brush of the present invention and the grinding hammer and grinding ring in the grinding pot body;

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

[0051] Fig. 22 It is a structural schematic diagram of the electromagnetic lock of the present invention;

[0052] Fig.23It is a schematic diagram of the cooperation between the lower limit ring and the pot cover limit rod of the present invention.

[0053] The reference numerals in the figure are:

[0054] 1. Feeding device; 11. First rotating assembly; 12. Feeding funnel; 13. Cone; 14. Pick; 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. Blowing nozzle; 26. Spring telescopic rod; 261. Brush; 27. Fourth rotating assembly; 3. Grinding pot cover; 31. First telescopic device; 32. First pusher; 33. Lower layer of pot cover; 331. Lower leaf ring; 332. Lower limit ring; 333. Sealing pad; 334. Metal pressure plate; 34. Upper layer of pot cover; 341. Upper leaf ring; 342. First push rod; 343. Tough scraper; 4. Pressing device; 41. First pressure rod; 42. Fifth rotating assembly; 43. Elastic pressure ball; 44. Connecting rod; 4 5. Slope block; 46. Pressing block; 47. Second lifting device; 5. Screening assembly; 51. Base; 52. Screen pot; 521. Support spring; 522. Support ring; 523. Magnet baffle; 524. Second telescopic device; 53. Second pressing rod; 531. Pressing cover; 532. First driving motor; 533. Self-locking rod; 534. Sixth rotating assembly; 54. Friction block; 55. Seventh rotating assembly; 56. Third telescopic device; 561. Second pushing member; 57. Fourth telescopic device; 571. Pot cover limit rod; 58. Pot cover vibrator; 581. Second driving motor; 582. Turntable; 583. First connecting rod; 584. Second connecting rod; 585. Iron knocking wheel; 586. Magnet plate; 6. Vibrating table; 61. Turning assembly; 62. Grinding pot body; 63. Electromagnetic lock. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in 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.

[0056] A fully automatic grinding, screening and cleaning device. This solution can be used to fully automatically grind and screen materials such as coal, aluminum ore, and iron ore. The following is an example of coal. 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 component 5.

[0058] like Figure 1-3 As shown, the feeding device 1 includes a first rotating component 11, a feeding funnel 12, a cone 13, a paddle 14 and a second rotating component 15; the first rotating component 11 drives the feeding funnel 12 to rotate above the vibration 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 relatively on the feeding funnel 12 to form a circular conveying channel between the cone 13 and the output port of the feeding funnel 12, a rapper (not shown in the drawings) is installed on the feeding funnel 12, and a paddle 14 extending radially thereof is provided on the side wall of the cone 13, and a second rotating component 15 is installed on the outer side wall of the feeding funnel 12, and the second rotating component 15 is used to drive the cone 13 to rotate on the feeding funnel 12.

[0059] During the rotation, the paddle 14 can disperse the materials and prevent the materials from splashing due to falling from too high a 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 assembly 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 assembly 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, and the bottom wall of the top plate 22 is provided with a row of blowing nozzles 25 arranged along the direction perpendicular to the rotation axis of the top plate 22 (in the radial direction), and the blowing nozzles 25 are connected to an external positive pressure air source; the bottom wall of the top plate 22 is provided with a row of spring telescopic rods 26 arranged along the direction perpendicular to the rotation axis of the top plate 22 (in the radial direction), and the outer wall of the telescopic end of the spring telescopic rod 26 is provided with a brush 261, and the spring telescopic rod 26 tends to extend under normal conditions; the spring telescopic rod 26 and the brush 261 on its outer wall, as well as the blowing nozzle 25 are relatively arranged 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 locate the lower end of the brush 261 to prevent it from being stuck by the conical blades due to excessive downward movement. The end of the telescopic 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 being stuck during rotation, and ensures that there is no dead angle when cleaning.

[0064] like Figure 1 , 7 As shown in , 8, a pressing device 4, a first telescopic device 31 and a flip assembly 61 are installed on the top of the vibration table 6; the first telescopic device 31 is horizontally arranged and the output end thereof is connected to a first pusher 311 of a U-shaped structure; a grinding pot body 62 is arranged at the flip end of the flip assembly 61, and the grinding pot body 62 has built-in grinding hammers, grinding rings and other grinding parts; the flip assembly 61 drives the grinding pot body 62 to flip to the top of the vibration table in a state where the opening is facing upward;

[0065] like Figure 7-10 As shown, the pressing device 4 includes a first pressing rod 41, a fifth rotating assembly 42, an elastic pressing ball 43, a clamping rod 44, a ramp block 45, a pressing 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, so that the first pressure rod 41 is driven to rotate by the fifth rotating component 42. The other end of the first pressure rod 41 is hinged with a clamping rod 44. A reset spring is connected between the first pressure rod 41 and the clamping rod 44. The rotation angle of the clamping rod 44 relative to the first pressure rod 41 is limited by the hole space at the end of the first pressure rod 41 and rotates within a certain range. The elastic force of the reset spring makes the clamping rod 44 relative to the first pressure rod 41 in a certain position. Fig. 9 , 10 The free end of the connecting rod 44 is an inverted hook structure; the ramp block 45 is fixed to the top of the vibration table 6, the second lifting device 47 uses a screw drive structure to drive the pressure block 46 to lift vertically, the elastic pressure ball 43 is provided in the middle of the bottom wall of the first pressure rod 41.

[0067] like Figure 7 , 8 As shown in FIGS. 11 and 12 , the milling pot cover 3 comprises a pot cover lower layer 33 and a pot cover upper layer 34 which are coaxially rotatably connected; when the milling pot cover 3 is turned over to above the vibration table 6, the pot cover upper layer 34 is located above the pot cover lower layer 33; when the milling pot cover 3 is turned over to above the base 51, the pot cover lower layer 33 is located above the pot cover upper layer 34;

[0068] The side wall of the mill pot body 62 is equipped with multiple sets of electromagnetic locks 63, which are evenly distributed. The electromagnetic locks 63 are used to fix the lower layer 33 of the pot cover and the mill pot body 62 into a whole or separate them. The structure of the electromagnetic locks 63 can be Fig. 22 As shown, the electromagnetic lock 63 includes a first electric telescopic rod installed on the side wall of the grinding pot body 62, a threaded rod and a rod with a hole fixed to the lower layer 33 of the pot cover. When the grinding pot body 62 and the lower layer 33 of the pot cover are connected, the first electric telescopic rod is extended and inserted into the hole of the rod with a hole to achieve a fixed connection. The threaded rod is driven to rotate by the corresponding motor to drive the first electric telescopic rod to move downward, thereby pressing the rod with a hole of the lower layer 33 of the pot cover.

[0069] A lower blade ring 331 is arranged inside the lower layer 33 of the pot cover, and an upper blade ring 341 is arranged inside the upper layer 34 of the pot cover. The lower blade ring 331 and the upper blade ring 341 are closely abutted and matched. A circle of conical blades is arranged on the lower blade ring 331 and the upper blade ring 341 respectively, and the conical structures of the two groups of conical blades are located on the side away from each other, and the sides of the two groups of conical blades close to each other are closely abutted and matched; the side wall of the conical blade of the upper blade ring 341 is provided with a tough scraper 343 (such as Fig.11 The pink part in the middle), the outer wall of the upper layer 34 of the pot cover is provided with a first push rod 342; the upper surface of the lower leaf ring 331 (including the corresponding conical blades) (the side that abuts against the upper leaf 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 cover is provided with a lower limit ring 332; the sealing gasket 333 (such as Fig.12 The green part of the lower blade ring 331 (including the corresponding conical blades) is adapted to the shape of the lower blade ring 331, the outer edge of the sealing gasket 333 is convex, and the metal pressing plate 334 is adapted to the shape of other parts of the sealing gasket 333 avoiding the convex outer edge, so that the metal pressing plate 334 presses and fixes the sealing gasket 333 to the lower blade ring 331 through screws, and the convex part of the outer edge of the sealing gasket 333 is slightly higher than the metal pressing plate 334;

[0070] The rotation of the two groups of conical blades cooperates to open and close the opening 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 pot cover upper layer 34 is relatively disposed inside the first push member 32 of the U-shaped structure.

[0072] like Figure 13-18 As shown, the screening assembly 5 includes a base 51, a screen pot 52, a support spring 521, a support ring 522, a magnet 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 cover vibrator 58;

[0073] The second telescopic devices 524 have two groups distributed on opposite sides of the support ring 522 and move synchronously.

[0074] The support ring 522 is connected to the top of the base 51 through a plurality of 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 through a pull rope, and the second telescopic device 524 has multiple groups evenly distributed below the support ring 522; the magnet baffle 523 can be installed on the top of the support ring 522 near the vibration table 6 using a permanent magnet or an electromagnet, the magnet baffle 523 occupies less than half of the support ring 522 and is an arc-shaped structure; the sieve pot 52 and the magnet baffle 523 are magnetically attracted to cooperate;

[0075] The seventh rotating assembly 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 assembly 55, and the friction block 54 is eccentrically arranged relative to the rotation axis of the seventh rotating assembly 55;

[0076] There are two groups of friction blocks 54 arranged on opposite sides of the screen pot 52 for synchronous movement.

[0077] The sixth rotating assembly 534 is installed on the support ring 522, one end of the second pressure rod 53 is rotatably connected to the support ring 522 and driven to rotate by the sixth rotating assembly 534, the second pressure rod 53 is connected to the pressure cover 531 through multiple sets of connecting springs, and the pressure cover 531 is adapted to the opening of the sieve pot 52; the first driving motor 532 is relatively installed on the base / support ring 522, and the output end of the first driving motor 532 is connected to the self-locking rod 533;

[0078] In the clamped state, the second pressing rod 53 has a hook below the end close to the self-locking rod 533 , and a mechanical self-locking device is provided below the hook of the second pressing rod 53 in this state.

[0079] The fourth telescopic device 57 is horizontally arranged and fixed relative to the base 51. The telescopic end of the fourth telescopic device 57 is connected to a pot cover limiting rod 571. The opening of the sieve pot 52 is threadedly connected with the pot cover upper layer 34. The outer side wall of the pot cover lower layer 33 is provided with a lower limiting ring 332. The lower limiting ring 332 is provided with a through hole for the pot cover limiting rod 571 to pass horizontally. Fig.16 , 17 As shown, when the pot cover upper layer 34 is threadedly connected to the mesh pot 52 to form an integral whole, the pot cover limiting rod 571 and the lower limiting ring 332 are located at the same horizontal height.

[0080] The funnel below the screen is equipped with a magnetic baffle, the position of which is shown in the figure, which can adsorb the screen shell to fix the screen position.

[0081] A conical funnel is provided at the lower end of the mesh pot 52, which is matched with the support ring 522, so that the mesh pot 52 is plugged into the support ring 522 through the funnel; at the same time, the mesh pot 52 and the magnet baffle 523 are magnetically attracted to each other to improve stability.

[0082] like Fig.18 As shown, the pot cover vibrator 58 includes a second driving motor 581, a rotating disk 582, a first connecting rod 583, a second connecting rod 584, an iron knocking wheel 585 and a magnet plate 586;

[0083] The second driving motor 581 is relatively fixed to the base 51, the second connecting rod 584 is linearly slidably matched with the base 51, the turntable 582 is installed at the output end of the second driving motor 581, an iron knocking wheel 585 is installed at one end of the second connecting rod 584, 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 cover.

[0084] The pot cover vibrator 58 is used to knock and vibrate the pot cover 3 of the grinding pot in the state of pouring powder into the mesh pot, so that the residual coal powder sample enters the mesh pot 52.

[0085] A remote monitoring camera (or visual recognition camera) is installed above the grinding pot body 62, which can be used to check and confirm whether all coal samples have fallen into the grinding pot body 62 or to check whether the cleaning is clean.

[0086] Working principle:

[0087] The first rotating assembly 11 is controlled to drive the feed hopper 12 to rotate above the vibration table 6. At this time, the feed hopper 12 is aligned with the axis of the mill pot body 62 and the mill pot cover 3 above the vibration table 6, and the external coal sample is transported to the inside of the mill pot body 62 through the feed funnel 12; in this process, the annular channel formed between the output port below the feed funnel 12 and the cone 13 is conducive to the uniform transportation of the coal sample to the upper surface of the upper blade ring 341 of the upper layer 34 of the pot cover. In this process, the second rotating assembly 15 drives the cone 13 to rotate, and then drives the paddle 14 to rotate to disperse the coal sample. The feed funnel 12 vibrates the residual material to the upper surface of the upper blade ring 341. After that, the feed funnel 12 finally rotates to its original position.

[0088] The expansion and contraction of the first expansion and contraction device 31 drives the upper layer 34 of the pot cover to rotate relative to the lower layer 33 of the pot cover through the cooperation of the first pusher 32 and the first push rod 342. The upper layer 34 of the pot cover rotates relative to the lower layer 33 of the pot cover so that the two groups of conical blades of the upper leaf ring 341 and the lower leaf ring 331 are aligned to 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 inside of the grinding pot body 62.

[0089] At this time, the upper surface of the conical blades of the upper blade ring 341 is conical to prevent the coal sample from accumulating. At the same time, the low-frequency and slow vibration of the vibration table 6 can shake all the coal samples on the upper surface of the upper blade ring 341 into the inside of the grinding pot body 62. In 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 outer edge protrusion of the sealing gasket 333, preventing the coal sample from flowing into the gap between the two sets of conical blades.

[0090] Afterwards, the upper layer 34 of the pot cover is driven to rotate in the opposite direction relative to the lower layer 33 of the pot cover, so that the two groups of conical blades are staggered and can close each other, thereby closing the gap between the conical blades; the upper leaf ring 341 and the lower leaf ring 331 are sealed by the outer edge protrusion of the sealing gasket 333, which can ensure a tight seal during grinding.

[0091] Afterwards, the fifth rotating component 42 drives the first pressure rod 41 to rotate, and the hook end of the clamping rod 44 slides into between the slope block 45 and the pressure block 46 through the inclined surface of the slope block 45; then the second lifting device 47 drives the pressure block 46 to move downward, and the pressure block 46 and the hook end of the clamping rod 44 cooperate to prevent the clamping rod 44 from moving upward and detaching; at this time, the first pressure rod 41 relatively spans the grinding pot cover 3, so that the elastic pressure ball 43 in the middle of the first pressure rod 41 is pressed tightly on the center position of the upper layer 34 of the pot cover; thereby achieving a tight compression and relative fixation between the upper layer 34 of the pot cover and the lower layer 33 of the pot cover, and pressing the grinding pot cover 3 and the grinding pot body 62 on the vibration table 6.

[0092] Then, the grinding hammer and the grinding ring in the inner cavity of the grinding pot body 62 cooperate 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 position, and then the fifth rotating component 42 drives the first pressure rod 41 to rotate in the opposite direction to disengage from the top of the grinding pot cover 3. During this process, the hook end of the clamping rod 44 that has lost its restriction rises and resets against the ramp block 45 under the action of the reset spring.

[0094] Afterwards, the flip assembly 61 drives the integrated mill pot body 62 and mill pot cover 3 to flip to the opening of the mesh pot 52, and makes the mill pot body 62 and mill pot cover 3 upside down and exchange positions. The outer thread of the pot cover upper layer 34 is relatively inserted into the inner thread of the opening of the mesh pot 52, and the seventh rotating assembly 55 drives the friction block 54 to rotate. During the process of one rotation of the friction block 54, part of it contacts the mesh pot 52. In this process, the mesh pot 52 is driven to rotate relatively by friction. The mesh pot 52 rotates relatively and is connected to one piece through the inner thread at its opening and the outer thread of the pot cover upper layer 34.

[0095] Afterwards, the third telescopic device 56 drives the second pusher 561 to extend, and the extension of the second pusher 561 cooperates with the first push rod 342 to drive the upper layer 34 of the pot cover to rotate, so that the two sets of conical blades are aligned and the gaps between the blades are opened. In this process, the convex part at the edge of the sealing gasket 333 scrapes off the 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 sequentially pass through the gaps between the conical blades of the lower blade ring 331 and the upper blade ring 341 and flow downward into the screen pot 52. At this time, the upper surface of the conical blade of the lower blade ring 331 has a conical structure to prevent the accumulation of coal sample particles.

[0096] An ultrasonic vibrator or a small vibrator is installed on the grinding pot body 62, and is started when the grinding pot body 62 is opened downward, which is conducive to shaking out the coal sample inside.

[0097] Then the electromagnetic lock 63 on the mill pot body 62 is unlocked, so that the mill pot body 62 is separated from the lower layer 33 of the mill pot cover 3, and the second telescopic device 524 is shortened and the funnel support ring 522 is pulled down by the pull rope to move down 5 cm. At this time, the mill pot body 62 will not be blocked by the mill hammer and the mill ring falling on the mill pot cover 3, and the mill pot body 62 is driven by the flip assembly 61 to rotate in the opposite direction to the original position of the vibration table 6. Then the second telescopic device 524 is extended and reset.

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

[0099] The second driving motor 581 drives the rotating disk 582 to rotate, and the rotation of the rotating disk 582 drives the second connecting rod 584 to reciprocate linear motion through the first connecting rod 583, and the reciprocating linear motion of the second connecting rod 584 reciprocates and pulls the magnetically attracted magnet plate 586 through the iron knocking wheel 585 at its free end, thereby shaking the mill pot cover 3, so that the mill ring and the mill hammer and the coal sample powder on the mill pot cover 3 fall into the mesh pot 52 below, and visual recognition monitoring is performed by a camera or sufficient vibration time is set according to experience to ensure that the coal sample powder falls into the mesh pot 52. The pot cover vibrator 58 is used to knock and vibrate the mill pot cover 3 in the powder pouring state toward the mesh pot 52, so that the residual coal powder sample enters the mesh pot 52.

[0100] After the coal sample powder enters the screen pot 52, the fourth telescopic device 57 drives the pot cover limit rod 571 to move horizontally in the opposite direction and retract to its original position. The second telescopic device 524 is shortened and the funnel support ring 522 is pulled down by the pull rope to move down 5 cm. At this time, the grinding pot body 62 will not be blocked by the grinding hammer and grinding ring that fall on the grinding pot cover 3. The grinding pot body 62 is driven by the flip assembly 61 to rotate forward to the top of the grinding pot cover 3, and the second telescopic device 524 is extended and reset, so that the grinding hammer and grinding ring are replaced 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 is fixedly connected to the lower layer 33 of the pot cover of the grinding pot cover 3.

[0101] Afterwards, the seventh rotating assembly 55 drives the friction block 54 to rotate in the opposite direction, and drives the mesh pot 52 to rotate in the opposite direction through the friction force, and the mesh pot 52 rotates in the opposite direction and separates from the upper layer 34 of the pot cover.

[0102] The two groups of conical blades of the upper blade ring 341 and the lower blade ring 331 are controlled to be staggered and just in a closed state, and then the integrated grinding pot body 62 and the grinding pot cover 3 are controlled to rotate 180 degrees in the opposite direction and return to the original position of the vibration table 6.

[0103] Afterwards, 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, and the pressure cover 53 is kept tightly closed by the connecting spring; then the first driving 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, and pushes the inverted hook at the free end of the second pressure rod 53 to just insert into the mechanical self-locking device, and the inverted hook at the free end of the second pressure rod 53 is pressed into the mechanical self-locking device and locked.

[0104] A filter is provided at the output port of the screen pot 52. Coal sample particles smaller than the filter holes can pass through the filter and fall into the funnel below the filter for collection. Small steel balls are installed in the screen pot 52. The small steel balls are connected to the screen pot 52 by soft wires to ensure that they do not fall off. During the vibration of the screen pot 52, the small steel balls knock on the filter with a small amplitude to prevent the screen holes from being blocked due to the small screen aperture.

[0105] A vibrator (not shown) is installed on the support ring 522 to drive the screen pot 52 pressed on the support ring 522 to vibrate, so that the coal sample particles on the filter are screened. After the set time is reached, the screened material remains above the filter, and the coal sample particles that pass through the screen of the screen pot 52 are transported downward into the container through the funnel part at the bottom.

[0106] Before the sixth rotating component 534 controls the pressure cover 53 to detach from the top opening of the screen pot 52, the first driving motor 532 drives the self-locking rod 533 to continue to rotate and press the second pressure rod 53 again, so that the barb at the free end of the second pressure rod 53 is separated from the mechanical self-locking device to be unlocked, and then the sixth rotating component 534 controls the pressure cover 53 to detach from the top opening of the screen pot 52; in the previous manner, the integrated grinding pot body 62 and the grinding pot cover 3 are driven to rotate 180° and engage with the top opening of the screen pot 52 again, and the friction block 54 rotates to screw the screen pot 52 and the upper layer of the grinding pot cover 3 into one.

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

[0108] Afterwards, the integrated grinding pot body 62, grinding pot cover 3 and screen pot 52 are driven to rotate 180° in the opposite direction and return to the base 51, so that the funnel part at the lower part of the screen pot 52 is inserted into the support ring 522. At this time, the screen pot 52 contacts and adsorbs the magnet baffle 523 welded on the support ring 522, and the grinding pot cover 3 and the screen pot 52 are controlled to separate, and the integrated grinding pot body 62 and grinding pot cover 3 are driven to return to the original position of the vibration table 6, and the grinding pot cover 3 and the grinding pot body 62 are pressed on the vibration table by the pressing device 4 in the previous way, and the vibration grinding program is started.

[0109] At this point, a complete cycle is completed. The number of cycles is set through a camera or according to experience to ensure that 100% of the material powder can pass through the filter and enter the next stage.

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

[0111] The third rotating assembly 21 drives the cantilever beam to rotate, so that the top plate 22 at the free end of the cantilever beam moves to above the base 51, and then the first lifting device 23 drives the top plate 22 to descend, and the top plate 22 cooperates with the lower limit ring 332 of the mill pot cover 3 through the dust cover 24 to limit the descending stroke. Fig.19 shown.

[0112] At this time, the top plate 22 and the dust cover 24 cooperate to cover the mill pot cover 3, as well as the mill hammer and the mill ring on the top of the mill pot cover 3. Since the spring telescopic rod 26 can be freely extended and retracted to adapt to avoid such as Fig. 20 shown.

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

[0114] The top plate 22 is driven to rotate by the fourth rotating component 27, which in turn drives a row of spring telescopic rods 26 below it to rotate. The row of spring telescopic rods 26 rotate to clean the grinding hammers and grinding rings through a brush; at the same time, external compressed air can be ejected through a row of blowing nozzles 25; the external negative pressure source draws out the air containing coal sample powder inside the dust cover 24 through the dust suction port 221.

[0115] The blowing nozzle 25 sprays compressed air and the dust suction port 221 suctions dust synchronously, and the top plate rotates 360° to complete a cycle. The number of cleaning cycles is set by experience or by using a camera after the cleaner is lifted. In the same way, the inside of the grinding pot body 62 of the grinding pot in a separated state of the grinding pot cover 3 and the grinding pot body 62 on the vibration table is cleaned. After the above cleaning is completed, the grinding pot body 62 rotates to the top of the pot cover, and the electromagnetic lock is pressed to lock it. The grinding pot body 62 rotates back to the vibration table, and the grinding pot cover 3 is brought back to the vibration table 6.

[0116] After that, the cleaner uses compressed air to blow and dust the inside of the mesh pot 52 located above the support ring 522, and the mesh vibrates for 3 seconds, and the compressed air blows and dusts once to complete a cycle. The number of cycles is then set based on experience or by using a camera to check. After reaching the set number of times, the grinding pot body 62 brings the mesh pot 52 back to the top of the vibration table 6, and the cleaner blows and dusts the other side of the filter three times. The mesh pot 52 returns to the top of the support ring 522, and the cleaner blows and dusts the inside of the mesh pot 52 with compressed air. Finally, the cleaner blows and dusts the upper conical blades twice to completely clean the residual material powder. If it is not cleaned up, the above operation can be repeated.

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

[0118] Because the end of the telescopic end of the spring telescopic rod 26 has a 1 cm long elastic short rod, the elastic short rod can be elastically deformed to adapt to the conical side of the blade, so as to clean the uneven plane. During the cleaning process, the blades of the mill pot cover 3 are in a closed state.

[0119] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A fully automatic grinding, screening and cleaning device, characterized in that: include: A feeding device (1), the feeding device (1) comprising a feeding hopper (12) and a first rotating component (11) for driving the feeding hopper (12) to rotate and adjust its position; A vibration table (6), wherein a turning assembly (61) is installed on the vibration table (6), and a grinding pot body (62) is provided at the turning end of the turning assembly (61); A powder mill pot cover (3), wherein the powder mill pot cover (3) is detachably mounted on the opening of a powder mill pot body (62), wherein the powder mill pot cover (3) comprises a pot cover lower layer (33) and a pot cover upper layer (34) which are coaxially rotatable, wherein the pot cover lower layer (33) is located on a side close to the powder mill pot body (62) relative to the pot cover upper layer (34), wherein the pot cover lower layer (33) and the pot cover upper layer (34) are respectively provided with a lower blade ring (331) and an upper blade ring (341), wherein the lower blade ring (331) and the upper blade ring (341) are respectively provided with a circle of conical blades, and the conical structures of the two groups of conical blades are located on the sides away from each other, and the two groups of conical blades are rotated to cooperate with each other to open and close the opening of the powder mill pot body (62); A screening component (5), the screening component (5) comprising a screen pot (52), a seventh rotating component (55) and a pot cover vibrator (58), the opening of the screen pot (52) being located on a rotation path of a grinding pot body (62) and a grinding pot cover (3) connected in an integrated state driven by a flipping component (61), a friction block (54) being connected to an output end of the seventh rotating component (55), the rotation of the friction block (54) driving the screen pot (52) to rotate through friction, the opening of the screen pot (52) being threadedly connected to an upper layer (34) of the pot cover.

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

3. The fully automatic grinding, screening and cleaning device according to claim 1 is characterized in that: A clamping device (4) is installed on the vibration table (6), and the clamping device (4) comprises a first pressure rod (41), a fifth rotating assembly (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 assembly (42), and the other end is hinged with a clamping rod (44), and a reset tension spring is connected between the clamping 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, and the pressure block (46) cooperates with the ramp block (45) to clamp and fix the hook end of the clamping rod (44); the middle part of the first pressure rod (41) is provided with an elastic pressure ball (43) that cooperates with the middle part of the upper layer (34) of the pot cover.

4. The fully automatic grinding, screening and cleaning device according to claim 1 is characterized in that: The cleaning device (2) further comprises a cleaning device (2), the cleaning device (2) comprising a first lifting device (23) and a third rotating assembly (21) for driving the first lifting device (23) to rotate and adjust its position, a top plate (22) driven to rotate by a fourth rotating assembly (27) being arranged at a downward output end of the first lifting device (23), a plurality of groups of radially distributed blowing nozzles (25) and a spring telescopic rod (26) being arranged at the bottom of the top plate (22), and a brush (261) being arranged on the outer wall of the telescopic end of the spring telescopic rod (26); A dust cover (24) is provided at the bottom of the top plate (22); a dust suction port (221) connected to an external negative pressure air source is provided on the top plate (22); the air blowing nozzle (25) is connected to an external positive pressure air source; the dust suction port (221), the air blowing nozzle (25) and the spring telescopic rod (26) are located inside the dust cover (24).

5. The fully automatic grinding, screening and cleaning device according to claim 1, characterized in that: A first telescopic device (31) is installed on the vibration table (6); an output end of the first telescopic device (31) is connected to a first pushing member (32) of a U-shaped structure; a first push rod (342) is provided on the outer side wall of the upper layer (34) of the pot cover extending outward; the telescopic movement of the first telescopic device (31) drives the upper layer (34) of the pot cover to rotate through the cooperation of the first pushing member (32) and the first push rod (342).

6. The fully automatic grinding, screening and cleaning device according to claim 1, characterized in that: A sealing gasket (333) with a matching structure is provided on one side of the lower blade ring (331) abutting against the upper blade ring (341); a convex portion is provided at the edge of the sealing gasket (333); and the sealing gasket (333) is pressed onto the lower blade ring (331) via a metal pressing plate (334) avoiding the convex portion; A tough scraper (343) is provided on the side wall of the conical blade of the upper blade ring (341).

7. The fully automatic grinding, screening and cleaning device according to claim 1 is characterized in that: The screening assembly (5) further comprises a support ring (522), wherein the support ring (522) is connected to the base (51) via a plurality of evenly distributed support springs (521), a magnet baffle (523) is provided on the support ring (522), the magnet baffle (523) and the screen pot (52) are magnetically attracted to each other, a funnel portion plug-fitted with the support ring (522) is provided at the lower portion of the screen pot (52), and a second telescopic device (524) is installed on the base (51), and a telescopic end of the second telescopic device (524) is connected to the support ring (522) via a pull rope.

8. The fully automatic grinding, screening 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) via a plurality of connecting springs; a layer of rubber pad is adhered to the pressure cover (531) near the side of the sieve pot (52); the pressure cover (531) is used to open and close the opening of the sieve pot (52); a first driving motor (532) is installed on the base (51); the output end of the first driving motor (532) is connected to a self-locking rod (533).

9. The fully automatic grinding, screening and cleaning device according to claim 7, characterized in that: The invention also comprises a pot cover vibrator (58), the pot cover vibrator (58) comprising a second drive motor (581) and a turntable (582) connected to the output end of the second drive motor (581), the turntable (582) being connected to a second connecting rod (584) at a non-center portion via a first connecting rod (583), the free end of the second connecting rod (584) being connected to an iron knocking wheel (585), the outer side wall of the upper layer (34) of the pot cover being provided with a magnet plate (586), the iron knocking wheel (585) being used for knocking the magnet plate (586) of the upper layer (34) of the pot cover.

10. The fully automatic grinding, screening and cleaning device according to claim 7, characterized in that: A third telescopic device (56) and a fourth telescopic device (57) are installed on the base (51); the telescopic end of the third telescopic device (56) is connected to a second pushing member (561); the telescopic movement of the third telescopic device (56) drives the upper layer (34) of the pot cover to rotate through the cooperation of the second pushing member (561) and the first pushing rod (342); the telescopic end of the fourth telescopic device (57) is connected to a pot cover limiting rod (571); the outer side wall of the lower layer (33) of the pot cover is provided with a lower limiting ring (332); the fourth telescopic device (57) drives the pot cover limiting rod (571) to extend through the lower limiting ring (332).

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