Automatic quantitative feeding device of coal testing system
By designing the gripping, screening, crushing, and detaching components of the automatic quantitative feeding device, the problems of large-particle coal getting stuck and wet coal clogging in coal testing were solved, achieving continuous and accurate feeding and improving the accuracy of testing.
Patent Information
- Application Number
- CN202411724341.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2044-11-28
AI Technical Summary
In the existing coal testing system, during the quantitative feeding process, the differences in particle size of lumpy coal can cause jamming and adhesion of wet coal, affecting the continuity and accuracy of feeding, causing blockages, and affecting the accuracy of testing.
An automatic quantitative feeding device was designed, comprising a gripping component, a first screening component, a crushing component, a second screening component, and a loading component. It processes large-diameter coal through screening and crushing, and utilizes a detachment component to reduce the risk of wet coal blockage, ensuring the continuity and accuracy of feeding.
It realizes automatic quantitative feeding in the coal testing process, reduces the risk of large-particle coal getting stuck and wet coal clogging, ensures the continuity and accuracy of feeding, and improves the detection accuracy of test samples.
Smart Images
Figure CN119551468B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of coal testing, in particular to an automatic quantitative feeding device for a coal testing system. Background Art
[0002] The automatic quantitative feeding device of the coal testing system is a device that ensures the accurate and stable supply of coal samples for precise testing and analysis. In actual use, by randomly grabbing a certain amount of coal from the coal conveyor belt for testing, it is used to monitor various indicators of coal (such as calorific value, moisture, sulfur content, etc.), which can better understand the properties of coal and thus achieve the rational use of coal resources.
[0003] In the process of quantitative feeding for testing, due to the large differences in the particle size of lump coal, when the coal sample contains a large number of large coal lumps, they may get stuck in the screw feeder, affecting the continuity and accuracy of feeding. At the same time, coal with high humidity will stick together, causing the feed port of the feeding device to be blocked, making the feeding amount less than the set value, thereby affecting the accuracy of coal testing. For this reason, we propose an automatic quantitative feeding device for the coal testing system. Summary of the Invention
[0004] The object of the present invention is to provide an automatic quantitative feeding device for a coal testing system to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an automatic quantitative feeding device for a coal testing system, comprising a coal conveyor belt, and a feeding mechanism provided on the coal conveyor belt for automatically feeding the coal for testing;
[0006] The feeding mechanism includes a bottom plate arranged on the coal conveyor belt, and the bottom plate is connected to a processing box on the side close to the coal conveyor belt through two support plates. The processing box is provided with a grabbing assembly for grabbing the coal and a first screening assembly for performing a first screening of the grabbed coal. The processing box is provided with a crushing assembly for crushing the coal screened for the first time and a second screening assembly for performing a second screening of the crushed coal. A feeding port is provided on the side of the processing box away from the bottom plate, and an inspection conveyor belt is provided on the side of the bottom plate close to the processing box. The inspection conveyor belt is provided with multiple positioning seats, each of the positioning seats is provided with a weight sensor, and the processing box is provided with a loading assembly for loading the coal after the second screening.
[0007] Preferably, the first screening component is rotatably connected to a first rotating rod between two opposite inner walls of the processing box, the side wall of the first rotating rod is connected to a screening frame, one side of the screening frame is fixedly connected to a first fixed plate, a first push rod motor is provided on the side of the processing box away from the bottom plate, the output end of the first push rod motor is connected to the first fixed plate, the side of the screening frame close to the bottom plate is fixedly connected to an inclined guide plate, and the screening frame is provided with a release component for releasing coal with large particle size.
[0008] Preferably, the release assembly includes a release hole opened on the side of the screening frame away from the first fixed plate, the release hole is connected to the release plate through a second rotating rod, a first motor is provided on one side of the screening frame, and the output end of the first motor is connected to the second rotating rod.
[0009] Preferably, the crushing assembly includes a crushing box fixedly connected to the inner wall of the processing box, a material receiving port is fixedly connected to the side of the crushing box close to the screening frame, a crushing roller is connected to the crushing box through two third rotating rods, one end of the two third rotating rods passes through the crushing box and is fixedly connected with gears that are meshed with each other, a second motor is provided on one side of the crushing box, and the output end of the second motor is connected to one of the two third rotating rods.
[0010] Preferably, the second screening assembly includes a conical aggregate hopper fixedly connected to the bottom wall of the processing box, and the side of the conical aggregate hopper away from the bottom plate is connected to the screen plate through four electric telescopic rods symmetrically arranged in pairs, and the processing box is provided with a reflux assembly for returning the residual coal on the screen plate to the coal conveyor belt.
[0011] Preferably, the loading assembly includes a fixed tube fixedly connected to the side of the processing box close to the bottom plate, the fixed tube is arranged in communication with the conical collecting hopper, the side wall of the fixed tube is fixedly connected to an L-shaped loading tube, the fixed tube is connected to a spiral conveying blade through a rotating shaft, the end of the fixed tube away from the processing box is fixedly connected to a U-shaped plate, the side of the U-shaped plate away from the fixed tube is provided with a third motor, the output end of the third motor is connected to the rotating shaft, and the fixed tube is provided with a shedding assembly for vibrating and removing the wet coal adhered to the inner wall of the fixed tube.
[0012] Preferably, the shedding assembly includes two symmetrically arranged sliding plates slidably connected to the side walls of the fixed tube, the two sliding plates are connected to the fixed tube through a telescopic assembly, and a plurality of vibration rods are fixedly connected to one side of the two sliding plates close to the fixed tube, and the rotating shaft is provided with a driving assembly for driving each vibration rod.
[0013] Preferably, the telescopic assembly includes two T-shaped rods fixedly connected to the side walls of the fixed tube, the sliding plate is slidably connected to the T-shaped rods, the two T-shaped rod side walls are sleeved with springs, and the two ends of the two springs are respectively connected to the T-shaped rod side walls and the fixed tube.
[0014] Preferably, the driving assembly includes a driving ring fixedly connected to the rotating shaft located on the outer side wall of the fixed tube, the side wall of the driving ring is fixedly connected to a plurality of semicircular protrusions, and the side of the sliding plate close to the driving ring is fixedly connected to the driving plate.
[0015] Preferably, the reflux assembly includes a reflux hole opened on the side of the processing box close to the coal conveyor belt, the reflux hole is provided with an electric telescopic door, and the processing box is provided with a reflux plate inclined on one side of the reflux hole.
[0016] Preferably, the grabbing assembly includes two third fixed plates fixedly connected to the side of the processing box away from the bottom plate, the two third fixed plates are respectively provided with a threaded rod and a guide rod, and two L-shaped plates are fixedly connected to the side of the processing box close to the coal conveyor belt, one end of the threaded rod and the guide rod are respectively connected to the two L-shaped plates, and a mounting plate is slidably connected between the threaded rod and the guide rod, and the mounting plate is respectively adapted to be connected to the threaded rod and the guide rod through a connecting plate, a mechanical claw is provided on the side of the mounting plate close to the coal conveyor belt, and a second push rod motor is provided on the other side of the mounting plate, the output end of the second push rod motor is connected to the mechanical claw, and one of the two third fixed plates is provided with a fourth motor, and the output end of the fourth motor is connected to the threaded rod.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] The automatic quantitative feeding device of the coal testing system of the present invention, through the coordinated action of the grabbing component, the first screening component, the crushing component, the second screening component and the loading component, realizes automatic quantitative feeding in the coal testing process while facilitating the screening and crushing of large-particle coal, thereby reducing the risk of coal getting stuck during feeding, and further ensuring the continuity and accuracy of coal feeding. At the same time, through the setting of the shedding component, under the coordinated action of the telescopic component and the driving component, the risk of blockage caused by the wet coal conveying pipeline is reduced, thereby improving the accuracy of the feeding amount of the coal testing sample. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0020] Figure 2 This is a schematic diagram of the structure of the grabbing component of the present invention;
[0021] Figure 3 This is a schematic diagram of the internal structure of the processing box of the present invention;
[0022] Figure 4 This is a schematic structural diagram of the first screening component of the present invention;
[0023] Figure 5 This is a schematic diagram of the structure of the crushing component of the present invention;
[0024] Figure 6 This is a schematic structural diagram of the second screening assembly of the present invention;
[0025] Figure 7 This is a schematic diagram of the internal structure of the loading assembly of the present invention;
[0026] Figure 8 It is a schematic structural diagram of the reflux component of the present invention.
[0027] In the figure: 1. Coal conveyor belt; 201. Bottom plate; 202. Support plate; 203. Processing box; 204. Feed port; 205. Inspection conveyor belt; 206. Positioning seat; 207. Weight sensor; 301. First rotating rod; 302. Screening frame; 303. First fixed plate; 304. First push rod motor; 305. Guide plate; 401. Release hole; 402. Release plate; 403. First motor; 501. Crushing box; 502. Material receiving port; 503. Crushing roller; 504. Gear; 601. Conical collecting hopper; 602. Screen plate; 603. Electric telescopic rod; 701. Fixed pipe; 702, loading pipe; 703, spiral conveying blade; 704, third motor; 705, U-shaped plate; 706, rotating shaft; 801, sliding plate; 802, vibration rod; 901, T-shaped rod; 902, spring; 1001, drive ring; 1002, protrusion; 1003, drive plate; 1101, return hole; 1102, electric telescopic door; 1103, return plate; 1201, third fixed plate; 1202, L-shaped plate; 1203, threaded rod; 1204, mounting plate; 1205, mechanical claw; 1206, second push rod motor; 1207, fourth motor; 1208, guide rod. DETAILED DESCRIPTION
[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.
[0029] Example 1
[0030] See also Figures 1-8, an automatic quantitative feeding device of a coal testing system shown in the figure includes a coal conveyor belt 1, and also includes a feeding mechanism provided on the coal conveyor belt 1 for automatically feeding the coal for testing;
[0031] The feeding mechanism includes a bottom plate 201 arranged on the coal conveyor belt 1, and a processing box 203 is connected to the side of the bottom plate 201 close to the coal conveyor belt 1 through two support plates 202. The processing box 203 is provided with a grabbing assembly for grabbing the coal and a first screening assembly for performing a first screening on the grabbed coal. The processing box 203 is provided with a crushing assembly for crushing the coal screened by the first screening and a second screening assembly for performing a second screening on the crushed coal. A feeding port 204 is provided on the side of the processing box 203 away from the bottom plate 201, and a feeding conveyor belt 205 is provided on the side of the bottom plate 201 close to the processing box 203. The feeding conveyor belt 205 is provided with a plurality of positioning seats 206, and each positioning seat 206 is provided with a weight sensor 207. The processing box 203 is provided with a loading assembly for loading the coal after the second screening.
[0032] It should be noted here that: through the setting of the feeding mechanism, with the cooperation of the grabbing assembly, the first screening assembly, the crushing assembly, the second screening assembly and the loading assembly, while realizing automatic quantitative feeding in the coal testing process, it is convenient for screening and crushing large-particle coal, thereby reducing the risk of jamming during coal feeding, and thus ensuring the continuity and accuracy of coal feeding. At the same time, through the setting of the shedding assembly, with the cooperation of the telescopic assembly and the driving assembly, the risk of blockage in the wet coal conveying pipeline is reduced, thereby improving the accuracy of the feeding amount of coal testing samples.
[0033] See also Figure 3 and Figure 4 The first screening assembly shown in the figure is rotatably connected to the first rotating rod 301 between the two opposite inner walls of the processing box 203. The side wall of the first rotating rod 301 is connected to the screening frame 302. A first fixed plate 303 is fixedly connected to one side of the screening frame 302. A first push rod motor 304 is provided on the side of the processing box 203 away from the bottom plate 201. The output end of the first push rod motor 304 is connected to the first fixed plate 303. An inclined guide plate 305 is fixedly connected to the side of the screening frame 302 close to the bottom plate 201. The screening frame 302 is provided with a release assembly for releasing coal with large particle size.
[0034] It should be noted here that the first screening component is provided to perform a first screening on the coal captured into the processing box 203, thereby screening the coal that meets the particle size requirements, thereby preventing the coal that meets the particle size requirements from being excessively crushed.
[0035] See also Figure 3 and Figure 4 The release assembly shown in the figure includes a release hole 401 opened on the side of the screening frame 302 away from the first fixed plate 303, the release hole 401 is connected to the release plate 402 through a second rotating rod, a first motor 403 is provided on one side of the screening frame 302, and the output end of the first motor 403 is connected to the second rotating rod;
[0036] It should be noted here that: through the setting of the release component, the large-particle coal remaining on the screening frame 302 slides into the crushing box 501 under the action of gravity.
[0037] See also Figure 3 and Figure 5 The crushing assembly shown in the figure includes a crushing box 501 fixedly connected to the inner wall of the processing box 203. A material receiving port 502 is fixedly connected to the side of the crushing box 501 close to the screening frame 302. A crushing roller 503 is connected to the crushing box 501 through two third rotating rods. One end of the two third rotating rods passes through the crushing box 501 and is fixedly connected to gears 504 that are meshed with each other. A second motor is provided on one side of the crushing box 501, and the output end of the second motor is connected to one of the two third rotating rods.
[0038] It should be noted here that the crushing assembly is used to crush the large-particle coal sample after the first screening.
[0039] See also Figure 3 and Figure 6 The second screening assembly shown in the figure includes a conical collecting hopper 601 fixedly connected to the bottom wall of the processing box 203. The side of the conical collecting hopper 601 away from the bottom plate 201 is connected to the screen plate 602 through four electric telescopic rods 603 arranged symmetrically in pairs. The processing box 203 is provided with a reflux assembly for returning the residual coal on the screen plate 602 to the coal conveyor belt 1;
[0040] It should be noted here that the second screening component is provided to screen the crushed coal sample.
[0041] See also Figure 6 and Figure 7The charging assembly shown in the figure includes a fixed pipe 701 fixedly connected to the side of the processing box 203 near the bottom plate 201, the fixed pipe 701 is arranged in communication with the conical collecting hopper 601, an L-shaped charging pipe 702 is fixedly connected to the side wall of the fixed pipe 701, the fixed pipe 701 is connected to a spiral conveying blade 703 through a rotating shaft 706, and the end of the fixed pipe 701 away from the processing box 203 is fixedly connected to a U-shaped plate 705. A third motor 704 is provided on the side of the U-shaped plate 705 away from the fixed pipe 701, and the output end of the third motor 704 is connected to the rotating shaft 706. The fixed pipe 701 is provided with a shedding assembly for vibrating and shedding wet coal adhered to the inner wall of the fixed pipe 701;
[0042] It should be noted that the charging assembly is used to transport the coal sample that has passed through the screening and crushing shaft to the sample tube on the positioning seat 206, thereby facilitating detection by the peripheral detection assembly.
[0043] See also Figure 6 and Figure 7 The shedding assembly shown in the figure includes two symmetrical sliding plates 801 slidably connected to the side walls of the fixed tube 701. The two sliding plates 801 are connected to the fixed tube 701 through a telescopic assembly. A plurality of vibration rods 802 are fixedly connected to one side of the two sliding plates 801 close to the fixed tube 701. The rotating shaft 706 is provided with a driving assembly for driving each vibration rod 802.
[0044] It should be noted here that: through the setting of the shedding component, under the action of vibration, the coal adhered to the inner wall of the fixed tube 701 due to high humidity is caused to fall off, thereby reducing the risk of clogging the fixed tube 701 and improving the accuracy of the feeding amount of the coal testing sample.
[0045] See also Figure 6 and Figure 7 The telescopic assembly shown in the figure includes two T-shaped rods 901 fixedly connected to the side walls of the fixed tube 701, the sliding plate 801 is slidably connected to the T-shaped rods 901, and the side walls of the two T-shaped rods 901 are provided with springs 902, and the two ends of the two springs 902 are respectively connected to the side walls of the T-shaped rods 901 and the fixed tube 701;
[0046] It should be noted here that the telescopic assembly is provided to provide guidance and limiting functions for the movement of the sliding plate 801 .
[0047] See also Figure 6 and Figure 7The driving assembly shown in the figure includes a driving ring 1001 fixedly connected to the rotating shaft 706 and located on the outer side wall of the fixed tube 701. A plurality of semicircular protrusions 1002 are fixedly connected to the side wall of the driving ring 1001. A driving plate 1003 is fixedly connected to the side of the sliding plate 801 close to the driving ring 1001.
[0048] It should be noted here that the arrangement of the driving assembly facilitates the reciprocating pushing of each sliding plate 801 .
[0049] See also Figure 8 The reflux assembly shown in the figure includes a reflux hole 1101 opened on the side of the processing box 203 close to the coal conveyor belt 1, the reflux hole 1101 is provided with an electric telescopic door 1102, and the processing box 203 is provided with a reflux plate 1103 inclined on one side of the reflux hole 1101;
[0050] It should be noted here that: through the setting of the reflux component, after the coal testing sample is fed, the electric telescopic door 1102 can be opened, and the four electric telescopic rods 603 can be used to make the sieve plate 602 inclined, so that under the action of coal gravity and the guidance of the reflux plate 1103, it can flow back to the coal conveyor belt 1, thereby reducing the waste of coal during the coal testing process and avoiding sample interference during the next testing process.
[0051] See also Figure 2 The grab assembly shown in the figure includes two third fixing plates 1201 fixedly connected to the side of the processing box 203 away from the bottom plate 201. The two third fixing plates 1201 are respectively provided with a threaded rod 1203 and a guide rod 1208. The side of the processing box 203 close to the coal conveyor belt 1 is fixedly connected to two L-shaped plates 1202. One end of the threaded rod 1203 and the guide rod 1208 are respectively connected to the two L-shaped plates 1202. A mounting plate 120 is slidably connected between the threaded rod 1203 and the guide rod 1208. 4. The mounting plate 1204 is respectively connected to the threaded rod 1203 and the guide rod 1208 through the connecting plate. A mechanical claw 1205 is provided on the side of the mounting plate 1204 close to the coal conveyor belt 1. A second push rod motor 1206 is provided on the other side of the mounting plate 1204. The output end of the second push rod motor 1206 is connected to the mechanical claw 1205. One of the two third fixing plates 1201 is provided with a fourth motor 1207. The output end of the fourth motor 1207 is connected to the threaded rod 1203.
[0052] It should be noted here that: by setting the grabbing assembly, it is convenient to grab the coal from the coal conveyor belt 1, thereby providing test samples for coal testing.
[0053] Working principle: When automatic quantitative feeding is performed during the coal testing process, the fourth motor 1207 is first started to drive the threaded rod 1203 to rotate. Under the threaded engagement transmission effect of the threaded rod 1203 and the connecting plate and the guiding effect of the guide rod 1208, the mounting plate 1204 will be driven to move closer to the coal conveyor belt 1. In the process of the mounting plate 1204 moving closer to the coal conveyor belt 1, the mechanical claw 1205 will be driven to move synchronously. When the mechanical claw 1205 moves to the top of the coal conveyor belt 1, the fourth motor is stopped. The second pusher motor 1206 is started to push the mechanical claw 1205 to move closer to the coal conveyor belt 1, so that the mechanical claw 1205 can grab the coal. After grabbing the coal, the second pusher motor 1206 is adjusted in height and the fourth motor 1207 is adjusted in lateral direction to move the mechanical claw 1205 to the feeding port 204 of the processing box 203. Then, the mechanical claw 1205 releases its grip on the coal, allowing the coal to fall into the processing box 203 under the action of gravity.
[0054] After the coal falls into the processing box 203, it will first fall into the screening frame 302. After the coal falls into the screening frame 302, the first push rod motor 304 is started to drive the screening frame 302 to reciprocate around the first rotating rod 301 as the center. As a result, under the reciprocating rotation of the screening frame 302, the coal that meets the detection particle size requirements falls from the screening frame 302 and falls to the screening plate 602 under the guidance of the guide plate 305, and finally falls into the conical collecting hopper 601.
[0055] After the coal that meets the particle size requirements is screened, the coal that does not meet the requirements and remains on the screening frame 302 will need to be crushed. When crushing the coal with large particle size, the first motor 403 is first used to drive the release plate 402 to rotate, removing the blocking of the release plate 402 on the release hole 401. Then, by starting the first push rod motor 304, the screening frame 302 is tilted, so that the large particle size coal remaining on the screening frame 302 slides into the crushing box 501 under the action of gravity. After the large particle size coal slides into the crushing box 501, the two crushing rollers 503 rotate in opposite directions to achieve the coal crushing.
[0056] After the coal is crushed, it will fall onto the screen plate 602, and the crushed coal will be screened by the shaking action of the electric telescopic rod 603. After the secondary screening, the coal that meets the particle size will fall into the conical collecting hopper 601, and then the third motor 704 is started to drive the spiral conveying blade 703 on the rotating shaft 706 to rotate. Under the rotation action of the spiral conveying blade 703, the coal in the conical collecting hopper 601 is transported from the charging pipe 702 to the sample cylinder on the positioning seat 206, and the weight sensor on the positioning seat 206 is used. Under the detection action of 207, quantitative loading of coal samples is realized, thereby realizing quantitative feeding of coal testing. Then, the sample is transported to the external detection component for testing by using the inspection conveyor belt 205. Thus, through the coordinated action of the grabbing component, the first screening component, the crushing component, the second screening component and the loading component, automatic quantitative feeding of the coal during the testing process is realized, and the screening and crushing of large-particle coal are facilitated, thereby reducing the risk of coal getting stuck during feeding, thereby ensuring the continuity and accuracy of coal feeding.
[0057] In the process of the spiral conveying blade 703 conveying the screened and crushed coal, the protrusion 1002 on the driving ring 1001 will be synchronously driven to rotate through the rotating shaft 706. In the process of the protrusion 1002 rotating, when the protrusion 1002 and the driving plate 1003 are against each other, the vibration rods 802 on the sliding plate 801 will be pushed away from the fixed tube 701 under the guidance of the mutual force and the telescopic component. When the protrusion 1002 passes over the driving plate 1003, the elastic action of the telescopic component will cause the vibration rods 802 to collide with the fixed tube 701. 01, so that in the process of continuous rotation of the driving ring 1001 driven by the rotating shaft 706, the protrusion 1002 will reciprocate and abut against the driving plate 1003, and then, under the interaction force and the guiding and resetting action of the telescopic component, each vibration rod 802 will reciprocate and hit the side wall of the fixed tube 701, thereby causing the side wall of the fixed tube 701 to vibrate, and under the action of the vibration, the coal adhered to the inner wall of the fixed tube 701 due to high humidity will fall off, thereby reducing the risk of clogging the fixed tube 701 and improving the accuracy of the feeding amount of the coal test sample;
[0058] After the coal testing sample is fed, the electric telescopic door 1102 can be opened, and the four electric telescopic rods 603 can be used to tilt the screen plate 602, so that the coal can flow back to the coal conveyor belt 1 under the action of coal gravity and the guidance of the return plate 1103, thereby reducing the waste of coal during the coal testing process and avoiding sample interference in the next testing process.
[0059] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. An automatic quantitative feeding device for a coal testing system, comprising: Coal conveyor belt (1); It is characterized by further comprising: A feeding mechanism provided on the coal conveyor belt (1) for automatically feeding the coal in a quantitative manner for testing; The feeding mechanism comprises a bottom plate (201) arranged on the coal conveyor belt (1); a side of the bottom plate (201) close to the coal conveyor belt (1) is connected to a processing box (203) via two support plates (202); the processing box (203) is provided with a grabbing assembly for grabbing coal and a first screening assembly for performing a first screening on the grabbed coal; the processing box (203) is provided with a crushing assembly for crushing the coal screened for the first time and a second screening assembly for performing a second screening on the crushed coal; a side of the processing box (203) away from the bottom plate (201) is provided with a feeding port (204); a side of the bottom plate (201) close to the processing box (203) is provided with a feeding conveyor belt (205); the feeding conveyor belt (205) is provided with a plurality of positioning seats (206); each positioning seat (206) is provided with a weight sensor (207); and the processing box (203) is provided with a loading assembly for loading the coal after the second screening; The second screening assembly comprises a conical collecting hopper (601) fixedly connected to the bottom wall of the processing box (203); a side of the conical collecting hopper (601) away from the bottom plate (201) is connected to a screen plate (602) via four electric telescopic rods (603) arranged symmetrically in pairs; and the processing box (203) is provided with a reflux assembly for returning residual coal on the screen plate (602) to the coal conveyor belt (1); The charging assembly comprises a fixed pipe (701) fixedly connected to a side of the processing box (203) close to the bottom plate (201), the fixed pipe (701) being arranged in communication with the conical collecting hopper (601), an L-shaped charging pipe (702) being fixedly connected to the side wall of the fixed pipe (701), the fixed pipe (701) being connected to a spiral conveying blade (703) via a rotating shaft (706), a U-shaped plate (705) being fixedly connected to one end of the fixed pipe (701) away from the processing box (203), a third motor (704) being provided on the side of the U-shaped plate (705) away from the fixed pipe (701), the output end of the third motor (704) being connected to the rotating shaft (706), and a shedding assembly being provided on the fixed pipe (701) for vibrating and shedding wet coal adhered to the inner wall of the fixed pipe (701); The shedding assembly comprises two sliding plates (801) symmetrically arranged and slidably connected to the side wall of the fixed tube (701), the two sliding plates (801) being connected to the fixed tube (701) via a telescopic assembly, a plurality of vibration rods (802) being fixedly connected to one side of the two sliding plates (801) close to the fixed tube (701), and the rotating shaft (706) being provided with a driving assembly for driving each vibration rod (802); The telescopic assembly comprises two T-shaped rods (901) fixedly connected to the side walls of the fixed tube (701), the sliding plate (801) is slidably connected to the T-shaped rods (901), the side walls of the two T-shaped rods (901) are sleeved with springs (902), and the two ends of the two springs (902) are respectively connected to the side walls of the T-shaped rods (901) and the fixed tube (701).
2. The automatic quantitative feeding device of the coal testing system according to claim 1, characterized in that: The first screening component is rotatably connected to a first rotating rod (301) between two inner walls of the processing box (203); a screening frame (302) is connected to a side wall of the first rotating rod (301); a first fixed plate (303) is fixedly connected to one side of the screening frame (302); a first push rod motor (304) is provided on a side of the processing box (203) away from the bottom plate (201); an output end of the first push rod motor (304) is connected to the first fixed plate (303); a guide plate (305) is fixedly connected to a side of the screening frame (302) close to the bottom plate (201); and a release component for releasing coal with a large particle size is provided on the screening frame (302).
3. The automatic quantitative feeding device of the coal testing system according to claim 2, characterized in that: The release assembly comprises a release hole (401) opened on a side of the screening frame (302) away from the first fixed plate (303); the release hole (401) is connected to the release plate (402) via a second rotating rod; a first motor (403) is provided on one side of the screening frame (302); an output end of the first motor (403) is connected to the second rotating rod.
4. The automatic quantitative feeding device of the coal testing system according to claim 3, characterized in that: The crushing assembly comprises a crushing box (501) fixedly connected to the inner wall of the processing box (203); a material receiving port (502) is fixedly connected to a side of the crushing box (501) close to the screening frame (302); a crushing roller (503) is connected to the crushing box (501) via two third rotating rods; one end of the two third rotating rods passes through the crushing box (501) and is fixedly connected to gears (504) that are meshed with each other; a second motor is provided on one side of the crushing box (501); an output end of the second motor is connected to one of the two third rotating rods.
5. The automatic quantitative feeding device of the coal testing system according to claim 4, characterized in that: The driving assembly comprises a driving ring (1001) fixedly connected to the rotating shaft (706) and located on the outer side wall of the fixed tube (701); a plurality of semicircular protrusions (1002) are fixedly connected to the side wall of the driving ring (1001); and a driving plate (1003) is fixedly connected to the side of the sliding plate (801) close to the driving ring (1001).
6. The automatic quantitative feeding device of the coal testing system according to claim 5, characterized in that: The reflux assembly comprises a reflux hole (1101) provided on a side of the processing box (203) close to the coal conveyor belt (1); the reflux hole (1101) is provided with an electric telescopic door (1102); and the processing box (203) is provided with a reflux plate (1103) obliquely provided on one side of the reflux hole (1101).
7. The automatic quantitative feeding device of the coal testing system according to claim 6, characterized in that: The grab assembly comprises two third fixed plates (1201) fixedly connected to a side of the processing box (203) away from the bottom plate (201), the two third fixed plates (1201) are respectively provided with a threaded rod (1203) and a guide rod (1208), the processing box (203) is fixedly connected to a side close to the coal conveyor belt (1) with two L-shaped plates (1202), one end of the threaded rod (1203) and the guide rod (1208) are respectively connected to the two L-shaped plates (1202), and a mounting plate (1204) is slidably connected between the threaded rod (1203) and the guide rod (1208). The mounting plate (1204) is respectively connected to the threaded rod (1203) and the guide rod (1208) through a connecting plate. A mechanical claw (1205) is provided on one side of the mounting plate (1204) close to the coal conveyor belt (1). A second push rod motor (1206) is provided on the other side of the mounting plate (1204). The output end of the second push rod motor (1206) is connected to the mechanical claw (1205). One of the two third fixed plates (1201) is provided with a fourth motor (1207). The output end of the fourth motor (1207) is connected to the threaded rod (1203).
Citation Information
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