Coal detection system

Abstract

The utility model relates to the technical field of coal detection, in particular to a coal detection system. The coal detection system comprises a coal sample supply device and a coal detection device, the coal sample supply device is located above the coal detection device, and an outlet of the coal sample supply device is communicated with an inlet of the coal detection device through a plurality of conveying pipes which are sequentially communicated from top to bottom. The coal sample providing device provides coal samples for the coal detection device through a plurality of conveying pipes, and a shockproof structure is arranged between every two adjacent conveying pipes. According to the utility model, the vibration from the coal sample supply device can be gradually weakened until eliminated by the plurality of anti-vibration structures, so that the vibration of the coal sample supply device is prevented from being transmitted to the coal sample supply device, and the centralized distribution form and the stable state of the coal samples cannot be changed; therefore, the accuracy reduction of the detection result of the coal detection device is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal detection, in particular to a coal detection system. Background Art

[0002] The coal sample providing device is connected to the coal detection device through a hard metal pipe fitting. The coal sample providing device is usually a device that generates intense vibration during operation, such as a coal crusher, a reducing belt conveyor or a splitter. The intense vibration of the coal sample providing device will be conducted to the coal detection device through the hard metal pipe, resulting in the vibration and displacement of the coal sample in the coal detection device. The coal sample will be distributed in a scattered state due to vibration and displacement. However, during the process of the coal detection device detecting the coal sample, the distribution of the coal sample should be relatively concentrated and the state of the coal sample should be stable to ensure the accuracy of the detection result. Therefore, when the intense vibration of the coal sample providing device is conducted to the coal detection device, the accuracy of the detection result of the coal detection device will be reduced. Summary of the Utility Model

[0003] One technical problem to be solved by the utility model is that the intense vibration of the coal sample providing device is conducted to the coal detection device, resulting in the reduction of the accuracy of the detection result of the coal detection device.

[0004] In order to achieve the above object, the utility model provides a coal detection system, which includes a coal sample providing device and a coal detection device. The coal sample providing device is located above the coal detection device. The outlet of the coal sample providing device is communicated with the inlet of the coal detection device through a plurality of conveying pipes that are sequentially communicated from top to bottom. The coal sample providing device provides coal samples for the coal detection device through a plurality of conveying pipes, and a shockproof structure is arranged between every two adjacent conveying pipes.

[0005] In some embodiments, the plurality of conveying pipes are a first conveying pipe, a second conveying pipe and a third conveying pipe that are sequentially distributed from top to bottom; the inlet of the first conveying pipe is communicated with the outlet of the coal sample providing device, the outlet of the third conveying pipe is communicated with the inlet of the coal detection device, and a shockproof structure is arranged between the first conveying pipe and the second conveying pipe and between the second conveying pipe and the third conveying pipe respectively.

[0006] In some embodiments, the anti-vibration structure between the first conveying pipe and the second conveying pipe is the first anti-vibration structure. The first anti-vibration structure includes two first flange plates and two elastic first annular gaskets. The two first flange plates are respectively sealed and arranged around the outer periphery of the end where the outlet of the first conveying pipe is located and the outer periphery of the end where the inlet of the second conveying pipe is located. The two first annular gaskets are stacked between the two first flange plates and clamped by the two first flange plates. The axis of the first flange plate coincides with the axis of the first annular gasket. The two first flange plates are connected by a plurality of bolts; and / or, the anti-vibration structure between the second conveying pipe and the third conveying pipe is the second anti-vibration structure. The second anti-vibration structure includes two second flange plates and two elastic second annular gaskets. The two second flange plates are respectively sealed and arranged around the outer periphery of the end where the outlet of the second conveying pipe is located and the outer periphery of the end where the inlet of the third conveying pipe is located. The two second annular gaskets are stacked between the two second flange plates and clamped by the two second flange plates. The axis of the second flange plate coincides with the axis of the second annular gasket. The two second flange plates are connected by a plurality of bolts.

[0007] In some embodiments, the second conveying pipe includes a first sub-conveying section and a second sub-conveying section which are distributed in sequence from top to bottom and communicate with each other. The first sub-conveying section extends vertically, and the second sub-conveying section extends downward obliquely from its top end to its bottom end; the first conveying pipe extends vertically, and the outlet of the first conveying pipe is communicated with the inlet of the first sub-conveying section through an anti-vibration structure; the third conveying pipe extends downward obliquely from its top end to its bottom end, and the inlet of the third conveying pipe is communicated with the outlet of the second sub-conveying section through an anti-vibration structure, and the axis of the third conveying pipe coincides with the axis of the second sub-conveying section.

[0008] In some embodiments, the sum of the length of the third conveying pipe and the length of the second sub-conveying section is greater than the sum of the length of the first conveying pipe and the length of the first sub-conveying section.

[0009] In some embodiments, the first conveying pipe is a flexible pipe fitting; and / or, the second conveying pipe is a flexible pipe fitting; and / or, the third conveying pipe is a flexible pipe fitting.

[0010] In some embodiments, the coal detection device includes a belt conveyor, a detection mechanism and a conveyor housing; the top wall of the conveyor housing is provided with a top inlet communicated with the outlet of the third conveying pipe, the bottom wall of the conveyor housing is provided with a bottom outlet, the belt conveyor is installed inside the conveyor housing, and the feeding end of the belt conveyor is located directly below the top inlet, and the discharging end of the belt conveyor is located directly above the bottom outlet. The detection mechanism is installed on the top wall of the conveyor housing and is located directly above the belt conveyor.

[0011] In some embodiments, the belt conveyor includes a conveyor belt, a driving device, and two transmission rollers. The two transmission rollers tension the conveyor belt and are capable of driving the conveyor belt to rotate. The driving device is capable of driving the transmission rollers to rotate. A plurality of support rollers are arranged at intervals between the two transmission rollers. The axes of the support rollers and the axes of the transmission rollers are in the same plane and parallel to each other. The diameters of the support rollers and the transmission rollers are the same.

[0012] In some embodiments, the coal detection device further includes a flow guide plate inserted into the top inlet. The bottom of the flow guide plate is located between the feeding end of the belt conveyor and the top inlet, and the top of the flow guide plate is located above the top inlet. The flow guide plate extends obliquely away from the belt conveyor from its bottom end to its top end.

[0013] In some embodiments, in the conveying direction of the belt conveyor, the conveyor housing has a first side wall. The first side wall is close to the feeding end of the belt conveyor and is horizontally opposite to the feeding end of the belt conveyor. An elastic filling material is filled between the first side wall and the flow guide plate.

[0014] The technical solution of the present utility model has the following beneficial effects:

[0015] The outlet of the coal sample providing device is communicated with the inlet of the coal detection device through a plurality of conveying pipes that are sequentially communicated from top to bottom. A shockproof structure is provided between every two adjacent conveying pipes. Therefore, the vibration from the coal sample providing device will be gradually weakened and finally eliminated by the plurality of shockproof structures, avoiding the vibration of the coal sample providing device being transmitted to the coal detection device, so that the concentrated distribution form and stable state of the coal samples will not change, thereby avoiding the reduction of the accuracy of the detection results of the coal detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of a coal detection system according to an embodiment of the present utility model;

[0017] Figure 2 is Figure 1 a partial enlarged schematic view of part A in

[0018] Figure 3 is Figure 1 a partial enlarged schematic view of part B in

[0019] DESCRIPTION OF THE REFERENCE NUMERALS

[0020] 1. Coal sample providing device; 2. Coal detection device; 21. Belt conveyor; 22. Conveyor housing; 23. Detection mechanism; 24. Deflector; 25. Elastic filling material; 211. Driving roller; 212. Conveyor belt; 213. Support roller; 221. Top inlet; 222. Bottom outlet; 223. First side wall; 224. Scraper; 3. Delivery pipe; 31. First delivery pipe; 32. Second delivery pipe; 321. First sub-delivery section; 322. Second sub-delivery section; 33. Third delivery pipe; 4. Anti-vibration structure; 41. First anti-vibration structure; 411. First flange; 412. First annular washer; 42. Second anti-vibration structure; 421. Second flange; 422. Second annular washer. Detailed implementation manners

[0021] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention, rather than to limit the present invention. For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention.

[0022] As Figure 1 shown, the present invention provides a coal detection system, which includes a coal sample providing device 1 and a coal detection device 2. The coal sample providing device 1 is located above the coal detection device 2. The outlet of the coal sample providing device 1 is communicated with the inlet of the coal detection device 2 through a plurality of delivery pipes 3 that are sequentially communicated from top to bottom. The coal sample providing device 1 provides coal samples for the coal detection device 2 through a plurality of delivery pipes 3, and an anti-vibration structure 4 is provided between every two adjacent delivery pipes 3.

[0023] Specifically, the outlet of the coal sample providing device 1 is communicated with the inlet of the coal detection device 2 through a plurality of delivery pipes 3 that are sequentially communicated from top to bottom, and an anti-vibration structure 4 is provided between every two adjacent delivery pipes 3. Therefore, the vibration from the coal sample providing device 1 will be gradually weakened and finally eliminated by a plurality of anti-vibration structures 4, avoiding the vibration of the coal sample providing device 1 from being transmitted to the coal detection device 2, so that the concentrated distribution form of the coal samples and the stable state of the coal samples will not change, thereby avoiding the reduction of the accuracy of the detection results of the coal detection device 2.

[0024] As Figure 1As shown, in some embodiments of the present utility model, the multiple conveying pipes 3 are the first conveying pipe 31, the second conveying pipe 32, and the third conveying pipe 33 that are sequentially distributed from top to bottom. The inlet of the first conveying pipe 31 is communicated with the outlet of the coal sample providing device 1, the outlet of the third conveying pipe 33 is communicated with the inlet of the coal detection device 2, and a shockproof structure 4 is respectively provided between the first conveying pipe 31 and the second conveying pipe 32 and between the second conveying pipe 32 and the third conveying pipe 33.

[0025] Specifically, the inlet of the first conveying pipe 31 is communicated with the outlet of the coal sample providing device 1, the outlet of the first conveying pipe 31 is communicated with the inlet of the second conveying pipe 32, the outlet of the second conveying pipe 32 is communicated with the inlet of the third conveying pipe 33, and the outlet of the third conveying pipe 33 is communicated with the inlet of the coal detection device 2. Only the above three conveying pipes 3 are provided between the coal sample providing device 1 and the coal detection device 2, which helps to simplify the structure of the entire coal detection system and is convenient for disassembly, installation, and maintenance.

[0026] As Figure 1 and Figure 2 As shown, in some embodiments of the present utility model, the shockproof structure 4 between the first conveying pipe 31 and the second conveying pipe 32 is the first shockproof structure 41. The first shockproof structure 41 includes two first flange plates 411 and two elastic first annular gaskets 412. The two first flange plates 411 are respectively hermetically ring - arranged on the outer periphery of the end where the outlet of the first conveying pipe 31 is located and on the outer periphery of the end where the inlet of the second conveying pipe 32 is located. The two first annular gaskets 412 are stacked between the two first flange plates 411 and are clamped by the two first flange plates 411. The axis of the first flange plate 411 coincides with the axis of the first annular gasket 412, and the two first flange plates 411 are connected by a plurality of bolts.

[0027] Specifically, the inner diameter of the first annular gasket 412, the inner diameter of the first conveying pipe 31, and the inner diameter of the second conveying pipe 32 are the same. One first flange plate 411 surrounds the outer periphery of the first conveying pipe 31 and is fixedly connected thereto, and the other first flange plate 411 surrounds the outer periphery of the second conveying pipe 32 and is fixedly connected thereto. The two first annular gaskets 412 are stacked together along the axial direction of the first flange plate 411 and are in close contact with each other. The two first annular gaskets 412 are located between the two first flange plates 411, and the two first flange plates 411 clamp the two first annular gaskets 412, so as to keep the first conveying pipe 31 and the second conveying pipe 32 sealed.

[0028] In this embodiment, during the process of the vibration of the coal sample providing device 1 being conducted from the first conveying pipe 31 to the second conveying pipe 32, the two first annular gaskets 412 can weaken or even eliminate the vibration by means of their own elasticity, avoiding the influence of the vibration on the detection accuracy of the coal detection device 2.

[0029] As Figure 1 and Figure 3 shown, in some embodiments of the present utility model, the shockproof structure 4 between the second conveying pipe 32 and the third conveying pipe 33 is the second shockproof structure 42. The second shockproof structure 42 includes two second flange plates 421 and two elastic second annular gaskets 422. The two second flange plates 421 are respectively hermetically ring - arranged on the outer periphery of the end where the outlet of the second conveying pipe 32 is located and the outer periphery of the end where the inlet of the third conveying pipe 33 is located. The two second annular gaskets 422 are stacked between the two second flange plates 421 and are clamped by the two second flange plates 421. The axes of the second flange plates 421 and the axes of the second annular gaskets 422 coincide, and the two second flange plates 421 are connected by a plurality of bolts.

[0030] Specifically, the setting method of the second shockproof structure 42 is similar to that of the first shockproof structure 41, and will not be elaborated in this embodiment. Among them, if the vibration of the coal sample providing device 1 is transmitted from the second conveying pipe 32 to the third conveying pipe 33, the two second annular gaskets 422 can further weaken or even eliminate the vibration by virtue of their own elasticity, so as to avoid the vibration affecting the detection accuracy of the coal detection device 2.

[0031] In some embodiments, the materials of the first annular gasket 412 and the second annular gasket 422 can be rubber or plastic with excellent elasticity, etc.

[0032] It should be noted that the shockproof structure 4 can also be in other forms, and the present utility model does not limit it. In some other embodiments, the shockproof structure 4 can include a spring member, an elastic corrugated pipe and two third flange plates. For the shockproof structure 4 between the first conveying pipe 31 and the second conveying pipe 32, the two third flange plates are respectively hermetically ring - arranged on the outer periphery of the end where the outlet of the first conveying pipe 31 is located and the outer periphery of the end where the inlet of the second conveying pipe 32 is located. The end where the outlet of the first conveying pipe 31 is located and the end where the inlet of the second conveying pipe 32 is located are hermetically connected through the corrugated pipe. The spring member is sleeved on the outer periphery of the corrugated pipe, and both ends of the spring member are in contact with the two third flange plates. The two third flange plates are fixedly connected by a plurality of bolts, and the two third flange plates press the spring member. The spring member and the corrugated pipe can weaken or even eliminate the vibration from the coal sample providing device 1. The setting method of the shockproof structure 4 between the second conveying pipe 32 and the third conveying pipe 33 is also as described above, and will not be elaborated in the present utility model.

[0033] As Figure 1As shown, in some embodiments of the present utility model, the second conveying pipe 32 includes a first sub-conveying section 321 and a second sub-conveying section 322 that are sequentially distributed from top to bottom and communicate with each other. The first sub-conveying section 321 extends vertically, and the second sub-conveying section 322 extends obliquely downward from its top end to its bottom end. The first conveying pipe 31 extends vertically, and there is a shock-proof structure 4 between the outlet of the first conveying pipe 31 and the inlet of the first sub-conveying section 321. The third conveying pipe 33 extends obliquely downward from its top end to its bottom end, and there is a shock-proof structure 4 between the inlet of the third conveying pipe 33 and the outlet of the second sub-conveying section 322, and the axis of the third conveying pipe 33 coincides with the axis of the second sub-conveying section 322.

[0034] Specifically, if the first conveying pipe 31, the second conveying pipe 32, and the third conveying pipe 33 are all set as pipe fittings extending along the same inclined straight line, but limited by factors such as the line of sight range, the force application position, and the installation habit, it is not conducive to the alignment and accurate assembly between the second conveying pipe 32 and the other two conveying pipes 3. However, if the first conveying pipe 31 and the first sub-conveying section 321 are both set as vertically extending pipe fittings, the alignment and accurate assembly between the first conveying pipe 31 and the first sub-conveying section 321 can be easily achieved, which also helps to further achieve the alignment and accurate assembly between the second sub-conveying section 322 and the third conveying pipe 33.

[0035] In addition, when the coal sample falls vertically downward onto the second sub-conveying section 322, the second sub-conveying section 322 will generate vibrations, but the shock-proof structure 4 between the third conveying pipe 33 and the second sub-conveying section 322 can weaken or even eliminate the vibrations, avoiding the influence of the vibrations on the detection accuracy of the coal detection device 2.

[0036] It should be noted that the inclination angles of the second sub-conveying section 322 and the third conveying pipe 33 can be adaptively determined according to factors such as the viscosity of the coal sample and the height of the factory building, and the present utility model does not make any restrictions. For example, the inclination angles of the second sub-conveying section 322 and the third conveying pipe 33 relative to the horizontal plane are 70° to 80°.

[0037] As Figure 1 shown, in some embodiments of the present utility model, the sum of the lengths of the third conveying pipe 33 and the second sub-conveying section 322 is greater than the sum of the lengths of the first conveying pipe 31 and the first sub-conveying section 321.

[0038] Specifically, this setting method helps to reduce the height difference between the outlet of the coal sample providing device 1 and the inlet of the second sub-conveying section 322, and reduce the impact force and speed when the coal sample falls onto the second sub-conveying section 322. Moreover, the coal sample can slide down along the third conveying pipe 33 and the second sub-conveying section 322 at a relatively slow speed, avoiding a large impact force on the coal detection device 2 due to the relatively fast sliding speed of the coal sample (a large impact force may cause vibration and affect the detection accuracy of the coal detection device 2).

[0039] As Figure 1 shown, in some embodiments of the present invention, the first conveying pipe 31 is a flexible pipe fitting. In some embodiments, the second conveying pipe 32 is a flexible pipe fitting. In some embodiments, the third conveying pipe 33 is a flexible pipe fitting. In some embodiments, the materials of the first conveying pipe 31, the second conveying pipe 32 and the third conveying pipe 33 are rubber materials or plastic materials with a certain degree of flexibility, etc. In addition, it should be noted that the above three conveying pipes 3 undertake the function of continuously conveying coal samples, so these three conveying pipes 3 still need to have a certain hardness, stiffness and strength. Their "flexibility" is only relative to the hard metal pipe fittings that are prone to conducting vibration, and it is not the "flexibility" that will easily deform.

[0040] As Figure 1 shown, in some embodiments of the present invention, the coal detection device 2 includes a belt conveyor 21, a detection mechanism 23 and a conveyor housing 22. The top wall of the conveyor housing 22 is provided with a top inlet 221 communicating with the outlet of the third conveying pipe 33, the bottom wall of the conveyor housing 22 is provided with a bottom outlet, the belt conveyor 21 is installed inside the conveyor housing 22, and the feeding end of the belt conveyor 21 is located directly below the top inlet 221, and the discharging end of the belt conveyor 21 is located directly above the bottom outlet 222. The detection mechanism 23 is installed on the top wall of the conveyor housing 22 and is located directly above the belt conveyor 21.

[0041] Specifically, the interior of the conveyor housing 22 has a receiving cavity, and the belt conveyor 21 is installed in this receiving cavity. The length direction of the belt conveyor 21 is consistent with the length direction of the conveyor housing 22, and their width directions are also the same. The conveyor housing 22 includes a top wall, a bottom wall, two first side walls 223 spaced apart in its length direction and two second side walls spaced apart in its width direction. The top inlet 221 and the bottom outlet 222 are spaced apart in the length direction of the belt conveyor 21. The top inlet 221 is the inlet of the coal detection device 2.

[0042] In this embodiment, the coal sample from the third conveyor pipe 33 can fall into the feeding end of the belt conveyor 21 through the top inlet 221, and then the belt conveyor 21 conveys the coal sample to its discharging end, while the detection mechanism 23 can detect the quality of the coal sample. The coal sample at the discharging end of the belt conveyor 21 can fall into the bottom outlet 222.

[0043] It should be noted that the belt conveyor 21 and the detection mechanism 23 can be any structural form in the art that can meet the usage requirements of the present utility model, and the present utility model does not make any restrictions. For example, the detection mechanism 23 can be an optical detection mechanism that can detect parameters such as the moisture content and sulfur content of the coal sample.

[0044] In some embodiments, a scraper 224 extending towards the conveyor belt 212 can be provided at the bottom outlet 222, and the scraper 224 can scrape the coal adhering to the conveyor belt 212.

[0045] In some embodiments, a plurality of legs are provided at the bottom of the conveyor housing 22, and rubber pads are provided at the bottom ends of the legs, and the rubber pads help to prevent the vibration of the ground from being transmitted to the conveyor belt 212.

[0046] As Figure 1 shown, in some embodiments of the present utility model, the belt conveyor 21 includes a conveyor belt 212, a driving device, and two transmission rollers 211. The two transmission rollers 211 tension the conveyor belt 212 and can drive the conveyor belt 212 to rotate. The driving device can drive the transmission roller 211 to rotate. A plurality of support rollers 213 are arranged at intervals between the two transmission rollers 211. The axes of the support rollers 213 and the axes of the transmission rollers 211 are in the same plane and parallel to each other, and the diameters of the support rollers 213 and the transmission rollers 211 are the same.

[0047] Specifically, the axes of the support rollers 213 and the axes of the transmission rollers 211 extend along the width direction of the conveyor housing 22. The two transmission rollers 211 are spaced apart in the length direction of the conveyor housing 22. All the support rollers 213 are located between the two transmission rollers 211 and are spaced apart in the length direction of the conveyor housing 22. The support rollers 213 and the transmission rollers 211 are also spaced apart. The driving device drives one of the transmission rollers 211 to rotate, and these parallelly arranged transmission rollers 211 and support rollers 213 can be connected by a chain, so the transmission rollers 211 and the support rollers 213 can rotate synchronously. In some other embodiments, the driving device drives one of the transmission rollers 211 to rotate, and the other transmission roller 211 and all the support rollers 213 rotate by the friction force with the conveyor belt 212. Preferably, the two ends of the transmission roller 211 and the two ends of the support roller 213 are respectively rotatably installed on the two second side walls, and the driving device can be installed in the conveyor housing 22.

[0048] In this embodiment, the coal sample falling from the top inlet 221 may impact the conveyor belt 212, causing the conveyor belt 212 to change between a downwardly concave state and an upwardly rebounding state. However, the support rollers 213 can support the conveyor belt 212, enabling the conveyor belt 212 to remain horizontal and preventing the conveyor belt 212 from vibrating due to the impact of the coal sample. Moreover, since the support rollers 213 can support the conveyor belt 212, it also helps to prevent the conveyor belt 212 from vibrating due to the vibration of the coal sample supply device 1. In summary, setting the support rollers 213 helps to ensure the accuracy of the detection results of the detection mechanism 23.

[0049] As Figure 1 shown, in some embodiments of the present utility model, the coal detection device 2 further includes a deflector plate 24 disposed through the top inlet 221. The bottom of the deflector plate 24 is located between the feeding end of the belt conveyor 21 and the top inlet 221, the top of the deflector plate 24 is located above the top inlet 221, and the deflector plate 24 extends obliquely away from the belt conveyor 21 from its bottom end to its top end.

[0050] Specifically, the deflector plate 24 extends from above the top inlet 221 through the top inlet 221 to below the top inlet 221. The top of the deflector plate 24 can be connected to the first side wall 223 or the wall of the third conveying pipe 33. The bottom of the deflector plate 24 is located near the feeding end of the belt conveyor 21 to facilitate the coal sample to fall onto the feeding end of the belt conveyor 21. The inclination angle of the deflector plate 24 relative to the horizontal plane can be adaptively determined according to factors such as the size of the conveyor housing 22 and the viscosity of the coal sample, and the present utility model does not make any restrictions. For example, the inclination angle of the deflector plate 24 relative to the horizontal plane is 70° to 80°.

[0051] In this embodiment, the coal sample from the third conveying pipe 33 can first fall onto the deflector plate 24 and then fall along the deflector plate 24 to the feeding end of the belt conveyor 21. After the coal sample falls onto the deflector plate 24, the moving speed of the coal sample will slow down, reducing the impact of the coal sample on the conveyor belt 212 and thus avoiding the vibration of the conveyor belt 212.

[0052] As Figure 1 shown, in some embodiments of the present utility model, in the conveying direction of the belt conveyor 21, the conveyor housing 22 has a first side wall 223. The first side wall 223 is close to the feeding end of the belt conveyor 21 and is horizontally opposite to the feeding end of the belt conveyor 21. An elastic filling material 25 is filled between the first side wall 223 and the deflector plate 24.

[0053] Specifically, the elastic filling material 25 can prevent the deflector 24 from deforming or shifting, and can also weaken or even eliminate the vibration of the deflector 24 (the vibration generated by the impact of the coal sample), so as to avoid the vibration of the deflector 24 being transmitted to the conveyor belt 212. Preferably, the elastic filling material 25 can be rubber or plastic with excellent elasticity, etc.

[0054] It should be noted that the coal detection device 2 can also be any other structural form that can meet the use requirements of the present utility model, and the present utility model is not limited thereto.

[0055] In this article, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The description of the above examples is only used to help understand the method and its core idea of the present utility model. The above is only the preferred implementation manner of the present utility model. It should be pointed out that due to the limited nature of written expression and the objectively infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the present utility model to other occasions without improvement, should all be regarded as the protection scope of the present utility model.

Claims

1. A coal detection system, characterized in that, It includes a coal sample providing device (1) and a coal detection device (2). The coal sample providing device (1) is located above the coal detection device (2). The outlet of the coal sample providing device (1) is communicated with the inlet of the coal detection device (2) through a plurality of conveying pipes (3) that are sequentially communicated from top to bottom. The coal sample providing device (1) provides coal samples for the coal detection device (2) through the plurality of conveying pipes (3). A shockproof structure (4) is provided between every two adjacent conveying pipes (3). The plurality of conveying pipes (3) are a first conveying pipe (31), a second conveying pipe (32), and a third conveying pipe (33) that are sequentially distributed from top to bottom. The inlet of the first conveying pipe (31) is communicated with the outlet of the coal sample providing device (1). The outlet of the third conveying pipe (33) is communicated with the inlet of the coal detection device (2). A shockproof structure (4) is respectively provided between the first conveying pipe (31) and the second conveying pipe (32) and between the second conveying pipe (32) and the third conveying pipe (33).

2. The coal detection system according to claim 1, wherein The shockproof structure (4) between the first conveying pipe (31) and the second conveying pipe (32) is a first shockproof structure (41). The first shockproof structure (41) includes two first flange plates (411) and two elastic first annular gaskets (412). The two first flange plates (411) are respectively sealed and ring - arranged on the outer periphery of the end where the outlet of the first conveying pipe (31) is located and the outer periphery of the end where the inlet of the second conveying pipe (32) is located. The two first annular gaskets (412) are stacked between the two first flange plates (411) and clamped by the two first flange plates (411). The axis of the first flange plate (411) coincides with the axis of the first annular gasket (412). The two first flange plates (411) are connected by a plurality of bolts. The shockproof structure (4) between the second conveying pipe (32) and the third conveying pipe (33) is a second shockproof structure (42). The second shockproof structure (42) includes two second flange plates (421) and two elastic second annular gaskets (422). The two second flange plates (421) are respectively sealed and ring - arranged on the outer periphery of the end where the outlet of the second conveying pipe (32) is located and the outer periphery of the end where the inlet of the third conveying pipe (33) is located. The two second annular gaskets (422) are stacked between the two second flange plates (421) and clamped by the two second flange plates (421). The axis of the second flange plate (421) coincides with the axis of the second annular gasket (422). The two second flange plates (421) are connected by a plurality of bolts. The second conveying pipe (32) includes a first sub - conveying section (321) and a second sub - conveying section (322) that are sequentially distributed from top to bottom and are communicated with each other. The first sub - conveying section (321) extends vertically, and the second sub - conveying section (322) extends downward obliquely from its top end to its bottom end. The first conveying pipe (31) extends vertically, and the outlet of the first conveying pipe (31) is communicated with the inlet of the first sub-conveying section (321) through one of the shock-proof structures (4); the third conveying pipe (33) extends obliquely downward from its top end to its bottom end, and the inlet of the third conveying pipe (33) is communicated with the outlet of the second sub-conveying section (322) through one of the shock-proof structures (4), and the axis of the third conveying pipe (33) coincides with the axis of the second sub-conveying section (322).

3. The coal detection system according to claim 2, wherein The sum of the length of the third conveying pipe (33) and the length of the second sub-conveying section (322) is greater than the sum of the length of the first conveying pipe (31) and the length of the first sub-conveying section (321).

4. The coal detection system according to claim 1, characterized in that, The first conveying pipe (31) is a flexible pipe fitting; and / or, the second conveying pipe (32) is a flexible pipe fitting; and / or, the third conveying pipe (33) is a flexible pipe fitting.

5. The coal detection system according to claim 1, characterized in that, The coal detection device (2) includes a belt conveyor (21), a detection mechanism (23) and a conveyor housing (22). The top wall of the conveyor housing (22) is provided with a top inlet (221) communicated with the outlet of the third conveying pipe (33), the bottom wall of the conveyor housing (22) is provided with a bottom outlet (222), the belt conveyor (21) is installed inside the conveyor housing (22), and the feeding end of the belt conveyor (21) is located directly below the top inlet (221), the discharging end of the belt conveyor (21) is located directly above the bottom outlet (222), and the detection mechanism (23) is installed on the top wall of the conveyor housing (22) and is located directly above the belt conveyor (21).

6. The coal detection system according to claim 5, characterized in that The belt conveyor (21) includes a conveyor belt (212), a driving device and two transmission rollers (211). The two transmission rollers (211) tension the conveyor belt (212) and can drive the conveyor belt (212) to rotate. The driving device can drive the transmission rollers (211) to rotate. A plurality of support rollers (213) are arranged at intervals between the two transmission rollers (211). The axes of the support rollers (213) and the axes of the transmission rollers (211) are in the same plane and parallel to each other. The diameters of the support rollers (213) and the transmission rollers (211) are the same.

7. The coal detection system according to claim 5, characterized in that, The coal detection device (2) further includes a diversion plate (24) inserted into the top inlet (221). The bottom of the diversion plate (24) is located between the feeding end of the belt conveyor (21) and the top inlet (221). The top of the diversion plate (24) is located above the top inlet (221), and the diversion plate (24) extends obliquely away from the belt conveyor (21) from its bottom end to its top end.

8. The coal detection system according to claim 7, characterized in that, In the conveying direction of the belt conveyor (21), the conveyor housing (22) has a first side wall (223), the first side wall (223) is close to the feeding end of the belt conveyor (21), and the first side wall (223) is horizontally opposite to the feeding end of the belt conveyor (21), and an elastic filling material (25) is filled between the first side wall (223) and the deflector (24).

Images