Automatic coke sample preparation system

Abstract

The invention relates to the field of coke sample preparation, in particular to an automatic coke sample preparation system which comprises a grabbing mechanism, a first-stage quantitative division machine, a second-stage quantitative division machine, a water sample division machine, a grinding machine, a first crusher, a second crusher and a drying box. The grabbing mechanism can drive the material tray to move among the first-stage quantitative division machine, the second-stage quantitative division machine, the water sample division machine, the grinding machine, the first crusher, the second crusher and the drying box. The automatic coke sample preparation system disclosed by the invention can automatically complete sample preparation of coke, is high in applicability, and can adjust the amount according to actual conditions and needs to meet different sampling standards.

Description

Technical Field

[0001] The present invention relates to the field of coke sample preparation, and more specifically, to an automatic coke sample preparation system. Background Art

[0002] Coke is mainly used for ironmaking. Accurate analysis of its particle size, M40, and M10 is of great significance for guiding blast furnace production, and coke sampling and analysis are required. Manual sampling requires manual screening, drum and discarding, and manual crushing and pulverization. Not only is the labor intensity high, but the noise is loud and dust is easily inhaled, affecting the health of operators. In the existing coke sampling system, due to the hard texture, rough surface, irregular shape, conductive dust, and many types of sample preparation, the existing coke sampling system has problems such as complex system, fast wear, easy blockage of channels, "bridging", stuck sieve holes, and high electrical failure. Summary of the invention

[0003] The purpose of the present invention is to provide a coke automatic sampling system for the above-mentioned problems, which can automatically complete the coke sampling and has strong applicability. The size of the sample can be adjusted according to actual conditions and needs to meet different sampling standards.

[0004] In order to achieve these purposes and other advantages according to the present invention, there is provided a coke automatic sampling system, comprising a gripping mechanism, a primary quantitative shrinking machine, a secondary quantitative shrinking machine, a moisture sample shrinking machine, a grinder, a first crusher, a second crusher and a drying box, wherein the gripping mechanism can drive the material tray to move among the primary quantitative shrinking machine, the secondary quantitative shrinking machine, the moisture sample shrinking machine, the grinder, the first crusher, the second crusher and the drying box.

[0005] Furthermore, the automatic coke sampling system also includes a raw material buffer rack and a packaging machine.

[0006] Furthermore, the automatic coke sampling system also includes a sample feeding conveyor and a waste sample conveyor. The discharge end of the sample feeding conveyor extends above the raw material buffer rack, and the grabbing mechanism can drive the material tray to move to the feed end of the waste sample conveyor.

[0007] Furthermore, in the described automatic sampling system for coke, the raw material buffer rack comprises a box body and two lifting plates, one side of the box body is open, and a waste sample inlet and a sample inlet are provided at the upper end thereof, the sample inlet is located below the discharge end of the sample feeding conveyor, the waste sample inlet is connected to a dumping bin, a dust suction mechanism is provided on the inner wall of the dumping bin, a plurality of storage plates are provided at intervals above and below the box body, the two lifting plates are respectively located below the waste sample inlet and the sample inlet, and are respectively connected to the topmost storage plate through lifting units.

[0008] Furthermore, in the described automatic coke sampling system, the grasping mechanism includes a manipulator and a clamp, the clamp is connected to the claws of the manipulator, and the first-level quantitative shrinking machine, the second-level quantitative shrinking machine, the moisture sample shrinking machine, the grinder, the first crusher, the second crusher, the drying box, the raw material buffer rack, the packaging machine and the feeding ends of the waste sample conveyor are all distributed around the manipulator.

[0009] Furthermore, in the described automatic coke sampling system, the fixture includes a mounting seat, a self-centering vise, two jaws and a proximity switch, the self-centering vise is arranged on the mounting seat, the two jaws are arranged opposite to each other and are both connected to the self-centering vise, and the proximity switch is arranged between the two jaws.

[0010] Furthermore, in the automatic coke sampling system, two linear guide rails arranged along the moving direction of the clamping jaws are parallelly provided on the mounting seat, and two sliding blocks are slidably provided on the linear guide rails, and the two sliding blocks are respectively connected to the two clamping jaws.

[0011] Furthermore, in the described automatic coke sampling system, the first-level quantitative shrinking machine includes a feeding bin, a conveying mechanism, a lower hopper and a collecting mechanism, the feeding end of the conveying mechanism is connected to the discharging port of the feeding bin, the feeding port of the lower hopper is connected to the discharging end of the conveying mechanism, and the upper end of the collecting mechanism is provided with a plurality of fixed positions for placing material trays evenly distributed along the circumference, and the collecting mechanism drives the material tray on any of the fixed positions to move to be connected to the discharging port of the lower hopper.

[0012] Furthermore, in the described automatic coke sampling system, the conveying mechanism includes a belt conveyor, a weighing sensor, an adjustment plate and an adjustment unit; the belt conveyor is horizontally arranged and located below the discharge port of the drop bin; two guide plates are spaced apart above the conveyor belt of the belt conveyor; the upper ends of the guide plates are connected to the drop bin, and the lower ends thereof are slidably fitted with the conveyor belt of the belt conveyor; a weighing sensor is provided on the belt conveyor, the adjustment plate is arranged above the conveyor belt of the belt conveyor, and is connected to the adjustment unit arranged on the drop bin; the adjustment unit drives the adjustment plate to move up and down to adjust the distance between its lower end and the conveyor belt of the belt conveyor; the lower hopper is located below the discharge end of the conveying mechanism.

[0013] Furthermore, in the described automatic coke sampling system, the feed hopper includes a hopper body, a feed tube, a guide cylinder, a baffle plate, a driving unit and a telescopic cylinder; a guide groove is provided at the upper end of the hopper body, the guide groove is located below the discharge end of the conveying mechanism, the feed tube is connected with the discharge port of the hopper body, the collecting mechanism drives any material tray on the fixed position to move to below the feed tube, the guide cylinder is coaxially arranged with the feed tube, the lower end of the feed tube extends into the guide cylinder, the lower end of the guide cylinder passes through the baffle plate and is connected with the baffle plate, the driving unit is arranged on the feed tube and connected with the baffle plate to drive the baffle plate to move up and down, the telescopic cylinder is sleeved at the connection between the feed tube and the guide cylinder, and its upper and lower ends are respectively connected with the feed tube and the guide cylinder.

[0014] The beneficial effects of the present invention are:

[0015] 1. The coke automatic sampling system of the present invention can automatically complete the coke sampling, and has strong applicability. The size of the sample can be adjusted according to actual conditions and needs to meet different sampling standards.

[0016] 2. In the reduction device of the present invention, after the material is put into the drop bin, it is sent to the lower hopper through the conveying mechanism, and falls from the lower hopper to the collecting mechanism, and finally collected by the material tray placed on the collecting mechanism. The quality of the material delivered to the lower hopper each time is controlled by the conveying mechanism for reduction. The reduction amount and reduction amount of the reduction device can be adjusted according to needs, which is suitable for continuous reduction during coke sampling.

[0017] 3. The clamp of the present invention drives two relatively arranged jaws to move closer to or farther from each other through a self-centering vise, thereby realizing the action of clamping or putting down the material tray, and by setting a position detection mechanism between the two jaws, the opening and closing state of the clamp is detected by the position detection mechanism.

[0018] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the coke automatic sample preparation system of the present invention;

[0020] Figure 2 This is a schematic structural diagram of the raw material cache rack of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the grabbing mechanism of the present invention;

[0022] Figure 4It is a structural schematic diagram of the clamp of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the material tray of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the first-level quantitative shrinking machine of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the first-stage quantitative shrinking machine of the present invention after removing the outer shell;

[0026] Figure 8 It is a schematic diagram of the connection between the material drop bin and the conveying mechanism of the present invention;

[0027] Fig. 9 It is a connection diagram of the conveying mechanism, the lower hopper and the collecting mechanism of the present invention;

[0028] Fig.10 It is a structural schematic diagram of the lower hopper of the present invention;

[0029] Fig.11 It is a structural schematic diagram of the collection mechanism of the present invention;

[0030] Fig.12 It is a structural schematic diagram of the cleaning device of the present invention;

[0031] Fig.13 for Fig.12 Cross-sectional view at AA in the middle.

[0032] Wherein, the reference numerals represent:

[0033] Grasping mechanism 1; mounting seat 1-1; clamping claw 1-2; self-centering vise 1-3; proximity switch 1-4; manipulator 1-5; material tray 1-6; linear guide rail 1-7; slide block 1-8; primary quantitative reduction machine 2; material drop bin 2-1; belt conveyor 2-2; material guide plate 2-3; adjustment plate 2-4; adjustment unit 2-5; bucket 2-6; material guide trough 2-7; material discharge pipe 2-8; guide cylinder 2-9; material baffle plate 2-10; drive unit 2-11; telescopic cylinder 2-12; collection mechanism 2-13; secondary quantitative reduction machine 3 ; Moisture sample reducer 4; grinder 5; first crusher 6; second crusher 7; drying box 8; raw material buffer rack 9; box body 9-1; lifting plate 9-2; lifting unit 9-3; dump bin 9-4; dust suction mechanism 9-5; storage plate 9-6; packaging machine 10; sample feeding conveyor 11; waste sample conveyor 12; cleaning device 13; cleaning box 13-1; feed port 13-2; reduction motor 13-3; first cylinder 13-4; second cylinder 13-5; brush 13-6; air inlet 13-7; air outlet 13-8. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with embodiments so that those skilled in the art can implement the invention with reference to the description.

[0035] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] like Figure 1 As shown, an embodiment of the present invention provides a coke automatic sampling system, comprising a grabbing mechanism 1, a primary quantitative reduction machine 2, a secondary quantitative reduction machine 3, a moisture sample reduction machine 4, a grinder 5, a first crusher 6, a second crusher 7 and a drying box 8, wherein the grabbing mechanism 1 can drive the material trays 1-6 to move among the primary quantitative reduction machine 2, the secondary quantitative reduction machine 3, the moisture sample reduction machine 4, the grinder 5, the first crusher 6, the second crusher 7 and the drying box 8. The first crusher 6 is a jaw crusher, and the second crusher 7 is a double-roll crusher.

[0037] In this embodiment, the grabbing mechanism 1 drives the material trays 1-6 to move between the primary quantitative reducer 2, the secondary quantitative reducer 3, the moisture sample reducer 4, the grinder 5, the first crusher 6, the second crusher 7 and the drying box 8, so as to realize the movement of materials between the above-mentioned devices. Specifically, when the above-mentioned automatic coke sample preparation system is working, it includes the following steps:

[0038] S1, the grabbing mechanism 1 moves the tray 1-6 containing the coke sample to the primary quantitative reduction machine 2, performs primary quantitative reduction, and obtains the first process sample, the moisture sample and the first waste sample, which are respectively contained in the trays 1-6;

[0039] S2, the grabbing mechanism 1 moves the tray 1-6 containing the moisture sample obtained in S1 to the moisture sample reduction machine 4, performs moisture sample reduction, obtains moisture sample and moisture waste sample, wherein part of the moisture sample is retained as a moisture sample storage sample;

[0040] S3, the grabbing mechanism 1 moves the tray 1-6 containing the first process sample obtained in S1 to the drying box 8 for pre-drying, and then the grabbing mechanism 1 moves the tray 1-6 containing the dried first process sample to the first crusher 6 for the first crushing, and moves the tray 1-6 containing the crushed material to the secondary quantitative reduction machine 3 for the first secondary quantitative reduction to obtain the second process sample and the second waste sample; the second process sample and the second waste sample are respectively contained in the tray 1-6;

[0041] S4, the grabbing mechanism 1 moves the tray 1-6 containing the second process sample obtained in S3 to the second crusher 7 for a second crushing, and moves the tray 1-6 containing the crushed material to the secondary quantitative reduction machine 3 for a second secondary quantitative reduction to obtain a third process sample and a third waste sample, which are respectively contained in the trays 1-6; part of the third process sample is retained as a test sample for storage and inspection, and the remaining third process sample is ground to obtain a test sample.

[0042] Preferably, as another embodiment of the present invention, Figure 1 As shown, it also includes a raw material buffer rack 9 and a packaging machine 10.

[0043] In this embodiment, during the operation of the automatic coke sampling system, the process materials generated in the production process can be placed in the raw material buffer rack 9 for short-term storage, such as the first waste sample obtained in S1, the moisture waste sample obtained in S2, the second waste sample obtained in S3, and the third waste sample obtained in S4; at the same time, the moisture sample obtained in S1, the moisture sample and the moisture sample storage sample obtained in S2, and the test sample and the test sample storage sample obtained in S4 can all be packaged by the packaging machine 10.

[0044] Preferably, as another embodiment of the present invention, Figure 1 As shown, it also includes a sample feeding conveyor 11 and a waste sample conveyor 12. The discharge end of the sample feeding conveyor 11 extends above the raw material buffer rack 9, and the grabbing mechanism 1 can drive the material trays 1-6 to move to the feed end of the waste sample conveyor 12.

[0045] In this embodiment, by setting up a sample feeding conveyor 11, the material to be sampled is conveyed to the empty material tray 1-6 on the raw material buffer rack 9, and then the material tray 1-6 is grabbed and moved by the grabbing mechanism 1 to carry out the subsequent process. By setting up a waste sample conveyor 12, the material tray 1-6 containing the first waste sample obtained in S1, the water waste sample obtained in S2, the second waste sample obtained in S3, and the third waste sample obtained in S4 can be moved to the feeding end of the waste sample conveyor 12 by the grabbing mechanism 1, and the above waste samples are poured onto the waste sample conveyor 12, and transported out to the subsequent collection and processing equipment through the waste sample conveyor 12.

[0046] Preferably, as another embodiment of the present invention, Figure 2 As shown, the raw material cache rack 9 includes a box body 9-1 and two lifting plates 9-2. One side of the box body 9-1 is open to facilitate the grabbing mechanism 1 to grab the material tray 1-6. A waste sample inlet and a sample inlet are provided at the upper end of the box body 9-1. The sample inlet is located below the discharge end of the sample feeding conveyor 11. The waste sample inlet is connected to a dump bin 9-4. A dust suction mechanism 9-5 is provided on the inner wall of the dump bin 9-4. A plurality of storage plates 9-6 are provided at intervals above and below in the box body 9-1. The two lifting plates 9-2 are respectively located below the waste sample inlet and the sample inlet, and are respectively connected to the topmost storage plate 9-6 through a lifting unit 9-3.

[0047] In this embodiment, a material tray 1-6 is placed on the upper end of the lifting plate 9-2, and two lifting units 9-3 respectively drive the two lifting plates 9-2 to move up and down, thereby realizing the up and down movement of the material tray 1-6 on the lifting plate 9-2. When the sample conveyor 11 feeds the raw material buffer rack 9, the material tray 1-6 below the sample inlet moves upward under the drive of its corresponding lifting unit 9-3, passes through the sample inlet and approaches the discharge end of the sample conveyor 11, shortening the distance between the material tray 1-6 and the discharge end of the sample conveyor 11, ensuring that the materials conveyed from the sample conveyor 11 can fall into the material tray 1-6, and avoiding the materials from bouncing up when falling and not falling into the material tray 1-6; after completing the material connection, the lifting unit 9-3 drives the material tray 1-6 to move downward into the box body 9-1. When collecting waste samples, a special waste tray 1-6 can be pre-set in the box 9-1 to reduce the number of times the grabbing mechanism 1 pours the waste samples onto the waste sample conveyor 12. The waste tray 1-6 is placed on the lifting plate 9-2 below the waste sample inlet. When pouring, the corresponding lifting unit 9-3 drives the waste tray 1-6 upward through the waste sample inlet to move into the pouring bin 9-4. The grabbing mechanism 1 grabs the tray 1-6 containing the waste samples and pours them into the pouring bin 9-4. The waste samples are uniformly poured into the waste tray 1-6. Dust may be generated during the pouring process. At this time, the dust can be sucked away by the dust suction mechanism 9-5 on the inner wall of the pouring bin 9-4.

[0048] Preferably, as another embodiment of the present invention, Figure 1 and Figure 3 As shown, the grasping mechanism 1 includes a manipulator 1-5 and a clamp, and the clamp is connected to the claw of the manipulator 1-5, and the feeding ends of the first-level quantitative shrinking machine 2, the second-level quantitative shrinking machine 3, the moisture sample shrinking machine 4, the grinder 5, the first crusher 6, the second crusher 7, the drying box 8, the raw material buffer rack 9, the packaging machine 10 and the waste sample conveyor 12 are all distributed around the manipulator 1-5.

[0049] In this embodiment, the grasping mechanism 1 includes a manipulator 1-5 and a clamp, which clamps the material tray 1-6, and the manipulator 1-5 drives the clamp to move between the first-level quantitative shrinking machine 2, the second-level quantitative shrinking machine 3, the moisture sample shrinking machine 4, the grinder 5, the first crusher 6, the second crusher 7, the drying box 8, the raw material buffer rack 9, the packaging machine 10 and the feed end of the waste sample conveyor 12, and the material tray 1-6 is driven to rotate by the flipping of the manipulator 1-5 to realize the action of pouring the material.

[0050] Preferably, as another embodiment of the present invention, Figure 3-Figure 5 As shown, the clamp includes a mounting seat 1-1, a self-centering vise 1-3, two jaws 1-2 and a proximity switch 1-4. The self-centering vise 1-3 is arranged on the mounting seat 1-1, the two jaws 1-2 are arranged opposite to each other and are both connected to the self-centering vise 1-3, and the proximity switch 1-4 is arranged between the two jaws 1-2.

[0051] In this embodiment, the self-centering vise 1-3 drives two relatively arranged clamps 1-2 to move closer to or farther from each other, and a clamping position is formed between the two clamps 1-2. The material tray 1-6 containing the coke sample is clamped through the clamping position to achieve the action of clamping the material tray 1-6 or putting down the material tray 1-6. At the same time, a proximity switch 1-4 is set between the two clamps 1-2, and the opening and closing state of the clamp is detected by the proximity switch 1-4. When the proximity switch 1-4 detects a signal, the two clamps 1-2 move closer to each other until the distance between them is the minimum value, and the clamps 1-2 are in a closed state; when the proximity switch 1-4 does not detect a signal, the distance between the two clamps 1-2 is greater than the minimum value, and the clamps 1-2 are in an open state.

[0052] A cross-shaped clamping portion can be provided on one side where the clamping jaws 1-2 are close to each other. By providing a cross-shaped clamping portion on one side where the clamping jaws 1-2 are close to each other, the area of ​​the clamping portion is reduced, and the pressure when the contact surface contacts the material tray 1-6 is increased. Figure 6 As described, a clamping piece is arranged on the material tray 1-6, and two clamping jaws 1-2 clamp the clamping piece. Cross-shaped grooves matching the clamping parts of the two clamping jaws 1-2 are arranged at both ends of the clamping piece, and the clamping parts are stuck in the cross-shaped grooves to enhance the clamping effect of the two clamping jaws 1-2 and improve the stability of the clamping jaws 1-2 when clamping the material tray 1-6.

[0053] Preferably, as another embodiment of the present invention, Figure 4 As shown, two linear guide rails 1-7 arranged along the moving direction of the clamping jaws 1-2 are parallelly arranged on the mounting seat 1-1, and two sliding blocks 1-8 are slidably arranged on the linear guide rails 1-7, and the two sliding blocks 1-8 are respectively connected to the two clamping jaws 1-2.

[0054] In this embodiment, the slider 1-8 slides on the linear guide 1-7 along its length direction, and the linear guide 1-7 limits the movement trajectory of the slider 1-8 and the clamp 1-2 connected to the slider 1-8, provides certain support for the movement of the clamp 1-2, and maintains the stability of the clamp 1-2 during movement.

[0055] Preferably, as another embodiment of the present invention, Figure 5-Figure 11 The one-stage quantitative shrinking machine 2 shown includes a feeding bin 2-1, a conveying mechanism, a lower hopper and a collecting mechanism 2-13. The feed end of the conveying mechanism is connected to the discharge port of the feeding bin 2-1, and the feed port of the lower hopper is connected to the discharge end of the conveying mechanism. The upper end of the collecting mechanism 2-13 is evenly distributed along the circumference with a plurality of fixed positions for placing material trays 1-6. The collecting mechanism 2-13 drives the material tray 1-6 on any of the fixed positions to move to be connected to the discharge port of the lower hopper.

[0056] In this embodiment, after the material is put into the drop bin 2-1, it falls onto the conveying mechanism, and the conveying mechanism controls the amount of material falling into the lower hopper each time, so as to realize quantitative reduction of the material. The material in the lower hopper is finally collected by the material tray 1-6 placed on the collecting mechanism 2-13, and the conveying mechanism controls the quality of the material transferred to the lower hopper each time for reduction. The reduction device also includes a shell, and the shell can be made of existing technology, and its specific structure will not be described in detail. The structure of the shell in the attached figure can be used as one of the specific implementation methods.

[0057] Preferably, as another embodiment of the present invention, the conveying mechanism includes a belt conveyor 2-2, a weighing sensor, an adjustment plate 2-4 and an adjustment unit 2-5, the belt conveyor 2-2 is horizontally arranged and located below the discharge port of the drop bin 2-1, and two guide plates 2-3 are spaced apart above the conveyor belt of the belt conveyor 2-2, the upper end of the guide plate 2-3 is connected to the drop bin 2-1, and the lower end thereof is slidably fitted with the conveyor belt of the belt conveyor 2-2; a weighing sensor is provided on the belt conveyor 2-2, the adjustment plate 2-4 is arranged above the conveyor belt of the belt conveyor 2-2, and is connected to the adjustment unit 2-5 arranged on the drop bin 2-1, the adjustment unit 2-5 drives the adjustment plate 2-4 to move up and down to adjust the distance between its lower end and the conveyor belt of the belt conveyor 2-2, and the lower hopper is located below the discharge end of the conveying mechanism.

[0058] In this embodiment, two guide plates 2-3 are arranged above the conveyor belt of the belt conveyor 2-2, and the upper end of the guide plate 2-3 is connected to the drop bin 2-1. The guide plate 2-3 allows the material dropped from the drop bin 2-1 to stably drop onto the conveyor belt, and the material dropped onto the conveyor belt is between the two guide plates 2-3. At the same time, the movement of the material is limited by the adjustment plate 2-4. The adjustment plate 2-4, the conveyor belt and the two guide plates 2-3 together form an opening, so that the material can only be transmitted forward through the opening. The material after passing through the opening forms a fixed thickness, thereby ensuring that the material on the conveyor belt can be dropped evenly. The adjustment unit 2-5 drives the adjustment plate 2-4 to move up and down to adjust the height of the opening, that is, to adjust the thickness of the material after passing through the adjustment plate 2-4. Specifically, the adjustment unit 2-5 can adopt a telescopic cylinder.

[0059] Preferably, as another embodiment of the present invention, the lower hopper includes a hopper body 2-6, a lowering pipe 2-8, a guide cylinder 2-9, a baffle plate 2-10, a driving unit 2-11 and a telescopic cylinder 2-12, a guide groove 2-7 is provided at the upper end of the hopper body 2-6, the guide groove 2-7 is located below the discharge end of the conveying mechanism, the lowering pipe 2-8 is connected to the discharge port of the hopper body 2-6, the collecting mechanism 2-13 drives any of the material trays 1-6 on the fixed position to move to below the lowering pipe 2-8, the guide cylinder 2-9 It is coaxially arranged with the feeding tube 2-8, the lower end of the feeding tube 2-8 extends into the guide cylinder 2-9, the lower end of the guide cylinder 2-9 passes through the baffle plate 2-10 and is connected thereto, the driving unit 2-11 is arranged on the feeding tube 2-8 and is connected to the baffle plate 2-10 to drive the baffle plate 2-10 to move up and down, the telescopic cylinder 2-12 is sleeved at the connection between the feeding tube 2-8 and the guide cylinder 2-9, and the upper and lower ends thereof are respectively connected to the feeding tube 2-8 and the guide cylinder 2-9.

[0060] In this embodiment, the material falling from the discharge end of the conveying mechanism is allowed to enter the discharge pipe 2-8 through the guide groove 2-7, and then finally fall into the material tray 1-6 on the fixed position below the discharge pipe 2-8 through the guidance of the discharge pipe 2-8. Under the action of gravity, the material in the discharge pipe 2-8 will bounce upward after falling into the material tray 1-6. In order to prevent the material from bouncing out of the material tray 1-6, a baffle plate 2-10 and a guide cylinder 2-9 are provided. When discharging, the upper end opening of the material tray 1-6 is blocked by the baffle plate 2-10 and the guide cylinder 2-9. Specifically, after the empty material tray 1-6 moves to the bottom of the discharge pipe 2-8, the driving unit 2-11 drives the baffle plate 2-10 to move downward and press on the upper end of the material tray 1-6, and seals the upper end opening of the material tray 1-6. At this time, the discharge of the discharge pipe 2-8 is carried out. After the material is discharged from the discharge pipe 2-8, the driving unit 2-11 drives the baffle plate 2-10 to move upward to release the material tray 1-6. The connection between the discharge pipe 2-8 and the guide cylinder 2-9 is sealed by setting the telescopic cylinder 2-12 to prevent the material in the discharge pipe 2-8 from falling and flying out from the upper end of the guide cylinder 2-9 when it is lifted up. The telescopic cylinder 2-12 can be made of a telescopic tube, which is telescopic with the movement of the guide cylinder 2-9.

[0061] Preferably, as another embodiment of the present invention, it further comprises a cleaning device 13, wherein the cleaning device 13 is arranged above the waste sample conveyor 12, and the gripping mechanism 1 drives the used material tray into the cleaning device 13 for cleaning.

[0062] In this embodiment, specifically, Fig.12 As shown, the cleaning device 13 includes a cleaning box 13-1, a reduction motor 13-3, a roller and a brush 13-6. The cleaning box 13-1 is arranged above the waste sample conveyor, and a discharge port is arranged at its lower end, and a feed port 13-2 is arranged on its side wall. The roller is arranged in the cleaning box 13-1 and is transmission-connected with the reduction motor 13-3 arranged on the cleaning box 13-1. The roller is provided with an air inlet 13-7 and a plurality of air outlets 13-8 evenly distributed. The brush 13-6 is arranged on the roller.

[0063] like Fig.13As shown, the drum includes a first cylinder 13-4 and a second cylinder 13-5, one end of the first cylinder 13-4 is connected to the cleaning box 13-1, and the other end extends into the second cylinder 13-5 and is rotatably sealed therewith, the second cylinder 13-5 is closed at one end away from the first cylinder 13-4, and a plurality of air outlets 13-8 are evenly distributed thereon; an annular groove is provided on the inner wall of the first cylinder 13-4 near the second cylinder 13-5, and the annular groove is connected to the interior of the second cylinder 13-5, an air inlet 13-7 is provided on the first cylinder 13-4, and the air inlet 13-7 is connected to an external air source, and the gas delivered by the external air source enters the second cylinder 13-5 through the annular groove, and enters the cleaning box 13-1 through the plurality of air outlets 13-8 on the second cylinder 13-5, so that the drum can exhaust air to the outside. The output shaft of the reduction motor 13-3 passes through the first sleeve and is connected to the second sleeve. The grabbing mechanism passes the material tray through the feed port 13-2 into the cleaning box 13-1. When the reduction motor 13-3 is working, it drives the second sleeve to rotate, and the brush 13-6 rotates therewith. The residue on the material tray is brushed off by the brush 13-6. At the same time, multiple air outlets 13-8 on the drum blow air outward to clean the material tray. The cleaned material passes through the discharge port at the lower end of the cleaning box 13-1 and falls onto the waste sample conveyor.

[0064] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the embodiments shown and described herein.

Claims

1. A coke automatic sample preparation system, characterized in that: It includes a grabbing mechanism, a primary quantitative shrinking machine, a secondary quantitative shrinking machine, a moisture sample shrinking machine, a grinder, a first crusher, a second crusher and a drying box. The grabbing mechanism can drive the material tray to move among the primary quantitative shrinking machine, the secondary quantitative shrinking machine, the moisture sample shrinking machine, the grinder, the first crusher, the second crusher and the drying box.

2. A coke automatic sample preparation system as claimed in claim 1, characterized in that: Also includes raw material buffer racks and packaging machines.

3. A coke automatic sample preparation system as claimed in claim 2, characterized in that: It also includes a sample feeding conveyor and a waste sample conveyor. The discharge end of the sample feeding conveyor extends above the raw material buffer rack, and the grabbing mechanism can drive the material tray to move to the feed end of the waste sample conveyor.

4. A coke automatic sample preparation system as claimed in claim 3, characterized in that: The raw material cache rack includes a box body and two lifting plates. One side of the box body is open, and a waste sample inlet and a sample inlet are provided at the upper end thereof. The sample inlet is located below the discharge end of the sample feeding conveyor. The waste sample inlet is connected to a dumping bin, and a dust suction mechanism is provided on the inner wall of the dumping bin. A plurality of storage plates are arranged at intervals in the upper and lower parts of the box body. The two lifting plates are respectively located below the waste sample inlet and the sample inlet, and are respectively connected to the topmost storage plate through lifting units.

5. A coke automatic sample preparation system as claimed in claim 3, characterized in that: The grasping mechanism includes a manipulator and a clamp, the clamp is connected to the claw of the manipulator, and the feeding ends of the first-level quantitative shrinking machine, the second-level quantitative shrinking machine, the moisture sample shrinking machine, the grinder, the first crusher, the second crusher, the drying box, the raw material buffer rack, the packaging machine and the waste sample conveyor are all distributed around the manipulator.

6. A coke automatic sample preparation system as claimed in claim 5, characterized in that: The clamp comprises a mounting seat, a self-centering vise, two clamping jaws and a proximity switch. The self-centering vise is arranged on the mounting seat, the two clamping jaws are arranged opposite to each other and are both connected to the self-centering vise, and the proximity switch is arranged between the two clamping jaws.

7. A coke automatic sample preparation system as claimed in claim 6, characterized in that: Two linear guide rails arranged along the moving direction of the clamping jaws are parallelly arranged on the mounting seat, and two sliding blocks are slidably arranged on the linear guide rails, and the two sliding blocks are respectively connected to the two clamping jaws.

8. A coke automatic sample preparation system as claimed in claim 1, characterized in that: The first-stage quantitative shrinking machine includes a feeding bin, a conveying mechanism, a lower hopper and a collecting mechanism. The feed end of the conveying mechanism is connected to the discharge port of the feeding bin, the feed port of the lower hopper is connected to the discharge end of the conveying mechanism, and the upper end of the collecting mechanism is evenly distributed along the circumference with a plurality of fixed positions for placing material trays. The collecting mechanism drives the material tray on any of the fixed positions to move to connect with the discharge port of the lower hopper.

9. A coke automatic sample preparation system as claimed in claim 8, characterized in that: The conveying mechanism includes a belt conveyor, a weighing sensor, an adjustment plate and an adjustment unit. The belt conveyor is horizontally arranged and located below the discharge port of the drop bin. Two guide plates are spaced apart above the conveyor belt of the belt conveyor. The upper end of the guide plate is connected to the drop bin, and the lower end thereof is slidably fitted with the conveyor belt of the belt conveyor. The belt conveyor is provided with a weighing sensor. The adjustment plate is arranged above the conveyor belt of the belt conveyor and is connected to the adjustment unit arranged on the drop bin. The adjustment unit drives the adjustment plate to move up and down to adjust the distance between its lower end and the conveyor belt of the belt conveyor. The lower hopper is located below the discharge end of the conveying mechanism.

10. The automatic coke sample preparation system according to claim 8, characterized in that: The feeding hopper includes a hopper body, a feeding tube, a guide cylinder, a baffle plate, a driving unit and a telescopic cylinder. A material guide groove is provided at the upper end of the hopper body, and the material guide groove is located below the discharge end of the conveying mechanism. The feeding tube is connected with the discharge port of the hopper body. The collecting mechanism drives any material tray on the fixed position to move to below the feeding tube. The guide cylinder is coaxially arranged with the feeding tube, and the lower end of the feeding tube extends into the guide cylinder. The lower end of the guide cylinder passes through the baffle plate and is connected with the baffle plate. The driving unit is arranged on the feeding tube and is connected with the baffle plate to drive the baffle plate to move up and down. The telescopic cylinder is sleeved at the connection between the feeding tube and the guide cylinder, and its upper and lower ends are respectively connected with the feeding tube and the guide cylinder.

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