Coal quality detection system

Abstract

The invention discloses a coal quality detection system. The coal quality detection system comprises a coal flow shaping device, a conveying belt, a coal quality detector and a supporting piece. The coal flow shaping device comprises a compression roller assembly and a height adjusting assembly. And the compression roller assembly and the coal quality detector are positioned above the front surface of the conveying belt. The supporting piece makes contact with the back face of the conveying belt and supports the conveying belt so that the conveying belt can be in a straight state. The opposite ends, perpendicular to the moving direction of the conveying belt, of the pressing roller assembly are connected with height adjusting assemblies correspondingly. The height adjusting assembly adjusts the vertical height of the pressing roller assembly and the conveying belt, so that the supporting effect of the supporting piece on the conveying belt is combined with the height adjusting assembly to adjust the vertical height of the pressing roller assembly and the conveying belt, accumulated errors caused by machining errors, assembling errors and the like can be eliminated, and it is ensured that the detection result of the coal quality detector is more accurate.

Description

Technical Field

[0001] The present application relates to detection equipment, and in particular to a coal quality detection system. Background Art

[0002] Coal quality testing is used to examine the moisture, ash, volatile matter, etc. of coal samples to ultimately determine the calorific value and ensure that the coal meets production requirements (such as power plants and steel mills), trade pricing basis and environmental protection standards (such as sulfur emission limits).

[0003] Coal quality testing is currently performed using a coal quality testing system. This system includes a coal quality tester. This tester can produce a test report within seconds and, in conjunction with an automated sampling mechanism, enables scheduled, fixed-point, and multiple-shot sampling and testing of entire batches of coal.

[0004] The existing coal quality detection system will have processing errors, assembly errors, etc. during the production and assembly process. After the assembly is completed, there will be large cumulative errors. It is impossible to ensure that the height difference between the upper surface of the coal flow and the installation reference surface of the coal quality detector is a fixed value, resulting in the test results output by the coal quality detector being significantly different from the standard value, and the accuracy of the output results cannot be guaranteed. Summary of the Invention

[0005] The purpose of this application is to disclose a coal quality detection system that can ensure the accuracy of the output results of a coal quality detector.

[0006] The present application discloses a coal quality detection system. The coal quality detection system includes a coal flow shaping device, a conveyor belt, a coal quality detector, and a support member. The coal flow shaping device includes a pressure roller assembly and a height adjustment assembly: the pressure roller assembly and the coal quality detector are located above the front of the conveyor belt. The support member contacts the back of the conveyor belt and supports the conveyor belt to maintain a straight state. The height adjustment assembly is connected to the opposite ends of the pressure roller assembly perpendicular to the direction of movement of the conveyor belt; the height adjustment assembly adjusts the vertical height of the pressure roller assembly and the conveyor belt.

[0007] In some embodiments, the pressure roller assembly includes a pressure roller shaft; at least one of the height adjustment assemblies includes an adjustment member rotatably connected to the pressure roller shaft, at least two lifting mechanisms and at least two tightening mechanisms; the coal flow shaping device includes a mounting member, and the adjustment member is connected to the mounting member through the at least two lifting mechanisms, and can be lifted and lowered relative to the conveyor belt in a direction perpendicular to the conveyor belt; the at least two tightening mechanisms lock the adjustment member, abut against the mounting member, and jointly lock the adjustment member at the target height with the lifting mechanism.

[0008] In some embodiments, the at least two lifting mechanisms are spaced apart along the movement direction of the conveyor belt, and each of the lifting mechanisms includes an adjustment member through hole passing through the adjustment member, a mounting member threaded hole provided on the mounting member, and a tightening bolt, and the tightening bolt passes through the adjustment member through hole and is connected to the mounting member screw hole.

[0009] In some embodiments, the at least two tightening mechanisms are spaced apart along the moving direction of the conveyor belt, and each of the tightening mechanisms enables the adjusting member to be located at a target height by engaging a tightening bolt with a threaded hole.

[0010] In some embodiments, the threaded hole passes through the adjusting member, the tightening bolt is threadedly connected to the threaded hole, extends out of the adjusting member to the target height, and tightens against the mounting member.

[0011] In some embodiments, the at least two lifting mechanisms are symmetrically arranged relative to the pressure roller axis of the pressure roller assembly; and the at least two pressing mechanisms are symmetrically arranged relative to the pressure roller axis of the pressure roller assembly.

[0012] In some embodiments, a guide mechanism is provided between the adjusting member and the mounting member, and the guide mechanism includes a guide wall, and the guide wall is perpendicular to the conveyor belt; under the guidance of the guide wall, the pressure roller assembly rises and falls in a direction perpendicular to the conveyor belt.

[0013] In some embodiments, the coal flow shaping device includes a side support member, which supports the adjusting member in a circumferential direction of the adjusting member, and a mating surface between the adjusting member and the side support member is perpendicular to the conveyor belt.

[0014] In some embodiments, the coal quality detection system includes a frame, and the frame includes mounting parts on opposite sides, and the mounting part on each side extends along the movement direction of the conveyor belt; the coal flow shaping device and the coal quality detector are installed across the mounting part.

[0015] In some embodiments, the support member includes a pressure roller end support member and a detector end support member, wherein the pressure roller end support member is located below the pressure roller assembly; the detector end support member is located between the outlet end of the pressure roller assembly and below the coal quality detector. Each mounting portion includes a pressure roller end mounting surface for mounting the pressure roller end support member and a detector end mounting surface for mounting the detection end support member; the detector end mounting surface and the pressure roller end mounting surface are coplanar.

[0016] For the coal quality detection system, the conveyor belt is supported by the support member so that the conveyor belt is lifted and in a straight state without sagging, etc. The horizontal height of the upper surface of the conveyor belt (the surface carrying the coal flow) is consistent. Combined with the height adjustment component, the vertical height of the corresponding pressure roller assembly and the conveyor belt is adjusted to eliminate the cumulative error caused by processing error, assembly error, etc., so that the △h is closer to the fixed value. The accuracy of the coal quality detector's rapid detection of the coal flow passing below depends on the △h. Therefore, the above setting can ensure that the detection result of the coal quality detector is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of a coal quality detection system of the present application;

[0018] Figure 2 yes Figure 1 A schematic diagram of a portion of a coal quality detection system is shown;

[0019] Figure 3 is a schematic diagram showing the installation of the pressure roller assembly on the frame, and the relative heights of the upper surface of the coal flow and the installation reference surface of the detector;

[0020] Figure 4 It is a schematic diagram of the relative height between the upper surface of the coal flow and the installation reference plane of the detector at another angle;

[0021] Figure 5 It is a schematic diagram of the detector, the secondary roller assembly and the support member assembled together;

[0022] Figure 6 It is a three-dimensional diagram of the coal flow shaping device;

[0023] Figure 7 is a schematic diagram of an assembly consisting of a drive device and a secondary pressure roller assembly;

[0024] Figure 8 yes Figure 7 Exploded view of

[0025] Figure 9 is a schematic diagram of the drive unit, secondary pressure roller assembly, height adjustment assembly, side support members and mounting members in an exploded state;

[0026] Figure 10 is a schematic diagram of a bearing;

[0027] Figure 11 is a schematic diagram of the adjustment part;

[0028] Figure 12 is a schematic diagram of the mounting parts;

[0029] Figure 13 is a schematic diagram of the height adjustment component in one state;

[0030] Figure 14 FIG. 4 is a schematic diagram of the height adjustment component in another state. DETAILED DESCRIPTION

[0031] Here, the technical solutions in the embodiments (or "implementations") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0032] If there are terms related to directional indications or positional relationships in the embodiments of this application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of this application are only used for the purpose of convenience of description and should not be understood as indicating or implying relative importance.

[0033] See also Figure 1 and Figure 2 , the present application discloses a coal quality detection system. The coal quality detection system includes a coal flow shaping device 1, a conveyor belt 2, a coal quality detector 3 and a support 4. For the entire coal quality detection system, the coal quality detection system also includes a coal conveyor 5. The coal conveyor 5 is used to convey the coal to the bottom of the coal flow shaping device 1. The working process of the above-mentioned coal quality detection system is as follows: the sampled coal is fed into the coal conveyor 5 through the front-end conveyor, and then transported by the coal conveyor 5 to the coal flow shaping device 1 via the conveyor belt 2 to shape the coal flow shape and internal compression degree. After the shaping is completed, the coal flow passes under the coal quality detector 3 to complete the coal quality analysis operation.

[0034] The coal flow shaping device 1 includes a pressing roller assembly 11 and a height adjustment assembly 12 . Figure 3 and Figure 6 The pressure roller assembly 11 is shown as having two levels, which are named as the first level pressure roller assembly 111 and the second level pressure roller assembly 112 for ease of understanding. The pressure roller assembly 11 and the coal quality detector 3 are located above the front of the conveyor belt 2. The front of the conveyor belt 2 refers to the surface of the conveyor belt 2 that carries the coal flow when in operation. Figure 9The coal flow shaping device 1 also includes a driving device 191 (for example, a motor), which is connected to the secondary roller assembly 112. The primary roller assembly 111 and the secondary roller assembly 112 are connected via a transmission mechanism 192 (the transmission mechanism 192 includes a sprocket 1921 and a chain 1922 connected to the roller shaft 1121). In this way, the driving device 191 provides power, and the transmission mechanism 192 transmits the power, so that the rollers of the primary roller assembly 111 and the secondary roller assembly 112 rotate synchronously. The coal flows through the conveyor belt 2, enters the roller assembly 11, and is compressed and shaped by its respective rollers (secondary compression shaping is performed in the figure). Combined with Figures 6 to 10 The detailed assembly relationship of the pressure roller assembly 11 of the coal flow shaping device is described as follows: The following description only uses the assembly of the secondary pressure roller assembly 112 as an example. The assembly of the primary pressure roller assembly 111 can refer to the assembly of the secondary pressure roller assembly 112. The coal flow shaping device 1 also includes a bearing 193 and a sleeve 194. The pressure roller shaft 1121 includes a left shoulder surface 11211, a left circular shaft surface 11212, a right shoulder surface 11213, a right first circular shaft surface 11214, a right second circular shaft surface 11215, and a right third circular shaft surface 11216. The left bearing 193 is assembled to the pressure roller shaft 1121 by limiting the position thereof by the left shoulder surface 11211 and the left circular shaft surface 11212. The sprocket 1921 is assembled to limit the position thereof by the right shoulder surface 11213 and the right first circular shaft surface 11214. The sleeve 194 is tightened toward the left through the right second axial circular surface 11215, securing the sprocket 1921. The sprocket 1921 is equipped with a locking device that secures the sprocket 1921 itself to the pressure roller shaft 1121. The right bearing 193 cooperates with the right second axial circular surface 11215, passes leftward into the pressure roller shaft 1121 behind the sleeve 194, and abuts against the side of the sleeve 194. The drive unit 191 cooperates with the right third axial circular surface 11216 and transmits power through the keyway structure on the right third axial circular surface 11216. The left and right bearings 193 respectively limit the axial and radial directions of the pressure roller shaft of the pressure roller assembly, ensuring that it can only rotate. In the above-mentioned connection method, by setting the bushing 194, on the one hand, the friction between the sprocket 1921 and the bearing 193 can be avoided; on the other hand, the bearing 193 is fixed to the adjusting member 121, and combined with the right shoulder surface 11213, the sprocket 1921 is axially limited by the bushing 194 and the right shoulder surface 11213 on the pressure roller shaft 1121, ensuring smooth movement of the first-level pressure roller assembly 111 and the second-level pressure roller assembly 112.

[0035] The support member 4 contacts the back side of the conveyor belt 2 and supports the conveyor belt 2 so that the conveyor belt 2 is in a straight state, that is, the conveyor belt 2 does not sag, etc.

[0036] The pressure roller assembly 11 is distributed along the moving direction of the conveyor belt 2 (that is, the conveying direction of the coal flow), see Figure 3 Assuming that the conveyor belt 2 moves to the right along the arrow R, the primary roller assembly 111 and the secondary roller assembly 112 are distributed in this direction. The height adjustment assembly 12 is connected to the opposite ends of the roller assembly 11 perpendicular to the direction of movement of the conveyor belt 2. Figure 1 and Figure 2 , the movement direction of the conveyor belt 2 is R, the direction of arrow r is the direction perpendicular to the movement direction R, then the opposite end is the end along the direction r. The height adjustment component 12 adjusts the vertical height of the corresponding pressure roller assembly 11 and the conveyor belt 2. In the present application, the first-level pressure roller assembly 111 and the second-level pressure roller assembly 112 are respectively connected to the opposite ends thereof with the height adjustment component 12, and the corresponding means: the vertical height of the first-level pressure roller assembly 111 relative to the conveyor belt 2 can be adjusted by the height adjustment components 12 at both ends of the first-level pressure roller assembly 111, and correspondingly, the vertical height of the second-level pressure roller assembly 112 relative to the conveyor belt 2 can be adjusted by the height adjustment components 12 at both ends of the second-level pressure roller assembly 112.

[0037] See also Figure 3 and Figure 4 Δh is the relative height of the coal flow upper surface 91. This value represents the relative height between the installation reference surface 31 of the coal quality detector 3 and the shaped coal flow upper surface 91. The closer the actual relative height Δh is to the fixed value H, the more accurate the output of the coal quality detector 3. Because the installation reference surface 31 is the fixed position of a component of the coal quality detection system, Δh is adjusted by adjusting the vertical height of the pressure roller assembly 11 and the conveyor belt 2.

[0038] In the related art, △h is adjusted by placing pads of different heights under the coal quality detector 3, but each pad has only one height. Therefore, △h cannot be made close to a fixed value by placing pads. As shown in the above setting, the support member 4 supports the conveyor belt 2 so that the conveyor belt 2 is lifted and in a straight state, and will not sag, etc. The horizontal height of the upper surface of the conveyor belt 2 (the surface carrying the coal flow) is consistent. In combination with the height adjustment component 12, the vertical height of the corresponding pressure roller assembly 11 and the conveyor belt 2 is adjusted to eliminate the cumulative error caused by processing error, assembly error, etc., so that the closer the △h is to a fixed value, the accuracy of the coal quality detector 3 in quickly detecting the coal flow passing below depends on the △h. Therefore, the above setting can ensure that the detection results of the coal quality detector 3 are more accurate. Furthermore, the support member 4 makes the conveyor belt 2 in a straight state, and the conveyor belt 2 will not vibrate during movement, ensuring that the coal flow will not be shaken apart, thereby ensuring the shape of the coal flow and ensuring the △h.

[0039] Based on the role played by the height adjustment component 12, the structure of the height adjustment component 12 is not limited, as long as it can achieve the vertical height adjustment. Figure 3 、 Figures 6 to 8 The pressure roller assembly 11 includes a pressure roller shaft 1121. At least one of the height adjustment assemblies 12 includes an adjustment member 121, at least two lifting mechanisms 122, and at least two tightening mechanisms 123. The adjustment member 121 is rotatably connected to the pressure roller shaft 1121, that is, after connection, the pressure roller shaft 1121 can rotate relative to the adjustment member 121 to achieve coal flow shaping. There is no limit to how the rotation connection is made, see Figure 8 and Figure 10 The bearing 193 includes a limiting side surface 1931 and a limiting end surface 1932. Figure 9 、 Figure 11 、 Figure 13 and Figure 14 The adjusting member 121 includes a mounting hole 1210. The mounting hole 1210 includes a mounting hole side surface 12101 and a mounting hole end surface 12102. The bearing 193 is located in the mounting hole 120. The mounting hole side surface 12101 cooperates with the limiting side surface 1931 to achieve radial limiting, and the mounting hole end surface 12102 cooperates with the limiting end surface 1932 to achieve axial limiting. The fastener passes through the fastening hole 12103 to lock the bearing 193. The tightening mechanism 123 is not limited to the structure described below. For example, it can be a wedge mechanism, an eccentric wheel / cam mechanism, a lever mechanism, or a spring tightening mechanism, etc.

[0040] See also Figure 6 、 Figure 9 、 Figures 12 to 14 , the coal flow shaping device 1 includes a mounting member 13. The coal flow shaping device 1 can be mounted on the frame 6, such as the mounting portion 61, through the mounting member 13. The adjusting member 121 is connected to the mounting member 13 through the at least two lifting mechanisms 122, and can be lifted and lowered relative to the conveyor belt 2 in a direction perpendicular to the conveyor belt. The at least two tightening mechanisms 123 lock the adjusting member 121, and abut against the mounting member 13, and jointly lock the adjusting member 121 at the target height with the lifting mechanism 122. At the target height, the height difference △h between the upper surface 91 of the coal flow and the mounting reference surface 31 is close to a fixed value. As follows, combined Figure 9 、 Figure 13 and Figure 14 , the process of height adjustment is described as follows:

[0041] The lifting mechanism 122 is pre-connected to connect the adjusting member 121 to the mounting member 13. At this time, the adjusting member 121 is lifted up and down relative to the conveyor belt 2.

[0042] The tightening mechanism 123 tightens the adjusting member 121 to the target height, and together with the lifting mechanism 122 locks the adjusting member 121 at the target height. Thus, the height adjustment of the adjusting member 121 is achieved through the cooperation of the tightening mechanism 123 and the lifting mechanism 122.

[0043] As set up above, the height adjustment of the adjustment member 121 can be achieved more conveniently and accurately through the cooperation of the lifting mechanism 122 and the tightening mechanism 123, and the two together lock the adjustment member 121 so that the adjustment member 121 is more stably located at the target height. After the coal quality detection system has been running for a long time, the height difference △h between the upper surface 91 of the coal flow and the installation reference surface 31 can also be close to a fixed value.

[0044] See also Figure 9 、 Figures 11 to 14 The at least two lifting mechanisms 122 are spaced apart along the direction of movement of the conveyor belt 2. Each lifting mechanism 122 includes an adjustment member through-hole 1221 extending through the adjustment member, a mounting member threaded hole 1222 provided on the mounting member 13, and a tensioning bolt 1223. The tensioning bolt 1223 passes through the adjustment member through-hole 1221 and is connected to the mounting member threaded hole 1222. In addition to employing a method in which the tensioning bolt 1223 engages with the adjustment member through-hole 1221, the lifting mechanisms 122 may also employ a method in which a bolt engages with a threaded hole.

[0045] As described above, the pre-tensioning bolt 1223 passes through the adjusting member through hole 1221 and is connected to the mounting member screw hole 1222. At this time, the tensioning bolt 1223 does not completely lock the adjusting member 121, and the adjusting member 121 can be raised and lowered. Subsequently, the tightening mechanism 123 tightens the adjusting member 121 to the target height, and then the tensioning bolt 1223 is locked with the adjusting member through hole 1221. Thus, the height of the adjusting member 121 is convenient to adjust. Combined with the lifting mechanism 122 being spaced apart along the movement direction of the conveyor belt 2, it can be locked at multiple locations to make the adjusting member 121 more effectively stabilized at the target height.

[0046] See also Figure 9 、 Figures 11 to 14 The at least two tightening mechanisms 123 are spaced apart along the direction of movement of the conveyor belt 2. Each tightening mechanism 123 includes an adjusting member screw hole 1231 extending through the adjusting member 121 and a tightening bolt 1233. The tightening bolt 1233 is threadedly connected to the adjusting member screw hole 1231, extends from the adjusting member 121 to the target height, and tightens against the mounting member 13. The tightening bolt 1233 is tightened against the mounting member 13.

[0047] As described above, after the adjusting member 121 is movably connected to the mounting member 13 via the lifting mechanism 122, the tightening bolt 1233 is rotated until it extends from the adjusting member 121 to the target height, and then the lifting mechanism 122 is locked to the mounting member 13. Thus, the height of the adjusting member 121 is easily adjustable because the target height to be adjusted can be determined based on the thread pitch. Furthermore, the tightening mechanisms 123 are spaced apart along the direction of movement of the conveyor belt 2, allowing for multiple tightening locations to more effectively stabilize the adjusting member 121 at the target height. In the event that the lifting mechanism 122 includes a tightening bolt 1223 and the tightening mechanism 123 includes a tightening bolt 1233, during the adjustment process, the tightness of the tightening bolt 1233 and the tightening bolt 1223 are synchronously controlled (i.e., the tightening and loosening of the tightening bolt 1233 and the tightening bolt 1223 can be achieved), thereby ensuring that the position of the adjusting member 121 is stable and the height of the adjusting member 121 is easily adjustable. In the above embodiment, adjustment is achieved by including a threaded hole (adjustment member screw hole 1231) in the adjustment member 121. In other embodiments, the threaded hole may not be provided on the adjustment member 121, but may be provided on other components of the tightening mechanism, as long as the adjustment member 121 can be tightened to the target height through threaded engagement. Of course, when the adjustment member 121 includes a threaded hole and the tightening bolt is threadedly connected to the threaded hole to achieve height adjustment, the structure of the tightening mechanism 123 is simple and height adjustment is also convenient.

[0048] See also Figure 6 、 Figure 9 、 Figure 11 、 Figure 13 and Figure 14 The at least two lifting mechanisms 122 are symmetrically arranged relative to the pressure roller shaft 1121 of the pressure roller assembly; the at least two tightening mechanisms 123 are symmetrically arranged relative to the pressure roller shaft 1121 of the pressure roller assembly. Figure 6 and Figure 8 It can be seen that the lifting mechanism 122 and the pressing mechanism 123 are symmetrical with respect to the pressure roller shaft 1121. Figure 11 、 Figure 13 and Figure 14 Taking the mounting hole 1210 as a reference, it is concluded that they are symmetrical relative to the pressure roller axis 1121.

[0049] As described above, since the at least two lifting mechanisms 122 are symmetrical relative to the pressure roller shaft 1121, and the at least two tightening mechanisms 123 are symmetrical relative to the pressure roller shaft 1121, the adjustment member 121 is subjected to uniform force, which can more effectively ensure that the adjustment member 121 is stable at the target height.

[0050] See also Figure 13 and Figure 14, a guide mechanism 124 is provided between the adjustment member 121 and the mounting member 13, and the guide mechanism 124 includes a guide wall 12411. The guide wall 12411 is perpendicular to the conveyor belt 2; under the guidance of the guide wall 12411, the pressure roller assembly 11 rises and falls in a direction perpendicular to the conveyor belt 2. The structure of the guide mechanism 124 is not limited, for example, a sliding guide rail or a rolling guide rail. The principle of the sliding guide rail is direct sliding friction between two contact surfaces (usually a guide rail and a slider). The principle of the sliding guide rail is to place a rolling body (steel ball, roller or needle) between the guide rail and the slider to convert sliding friction into rolling friction).

[0051] As described above, since Δh represents the height difference between the upper surface 91 of the coal stream and the mounting reference surface 31 in a direction perpendicular to the conveyor belt 2, the guide wall 12411 guides the roller assembly 11 in a direction perpendicular to the conveyor belt 2, ensuring that Δh is close to a fixed value and, consequently, that the output of the detector 3 is more accurate. Furthermore, since the opposite ends of the roller shaft 1121 are connected to bearings 193, which are located within the mounting holes 1210 of the adjustment member 121, the guide mechanism guides the bearings 193 on each side to rise and fall synchronously with the corresponding adjustment member 121, ensuring that the adjustment members 121 on both sides rise and fall to the same height. If the heights are not equal, the bearings 193 and roller shaft 1121 may become stuck. This helps improve the concentricity between the bearings 193 and roller shaft 1121, preventing abnormal noise between the bearings 193 and roller shaft 1121, or a failure of either the roller shaft 1121 or the bearings 193.

[0052] See also Figures 11 to 14 The guide mechanism 124 includes a groove 1241 and a protrusion 1242. The mounting member 13 is provided with the groove 1241, and the adjusting member 121 is provided with the protrusion 1242. Alternatively, the mounting member 13 may be provided with the protrusion 1242, and the adjusting member 121 may be provided with the groove 1241. In either case, the groove 1241 includes the guide wall 124111. Figure 12 In the embodiment, the groove 1241 is a notch, but is not limited thereto. For example, the groove 1241 is a cylindrical hole. In some embodiments, a portion of the mounting hole 1210 is formed on the protrusion 1242. In this way, the protrusion 1242 is utilized to reduce the size of the adjustment member 121.

[0053] As configured above, the guide mechanism 124 includes the groove 1241 and the protrusion 1242 . The structure of the guide mechanism 124 is simple, and the groove 1241 is more likely to form the guide wall 124111 .

[0054] See also Figure 6 and Figure 9 The coal flow shaping device 1 includes a side support member 14, which supports the adjusting member 121 circumferentially. A mating surface 141 between the adjusting member 121 and the side support member 14 is perpendicular to the conveyor belt 2. The adjusting member 121 includes an outer side surface 1211. The side support member 14 includes a side support side surface 1411. The outer side surface 1211 and the side support side surface 1411 are both perpendicular to the conveyor belt 2, and they contact each other to form the mating surface 141.

[0055] As described above, since the coal flow shaping device 1 also includes side supports 14, which support the adjustment member 121 and form a mating surface 141 perpendicular to the conveyor belt 2, the adjustment member 121 can only move in a direction perpendicular to the conveyor belt 2 under the action of the mating surface 141, thereby better ensuring that Δh is close to the fixed value, and thus ensuring that the output result of the detector 3 is more accurate. Accordingly, the mating surface 141 also guides the adjustment member 121, which also has the aforementioned beneficial effect of avoiding abnormal noise between the bearing 193 and the pressure roller shaft 1121, or failure of one of the pressure roller shaft 1121 and the bearing 193. When the coal flow shaping device includes side supports 14 and the guide mechanism 124, the guidance of the mating surface 141 and the guide mechanism 124 can better ensure that Δh is close to the fixed value, and thus ensure that the output result of the detector 3 is more accurate.

[0056] See also Figures 2 to 5 The coal quality detection system includes a frame 6. The frame 6 includes mounting portions 61 on opposite sides. The mounting portions 61 include the mounting reference surface 31. Each mounting portion 61 extends along the direction of movement of the conveyor belt 2; the coal flow shaping device 1 and the coal quality detector 3 are mounted across the opposing mounting portions 61.

[0057] As described above, the coal flow shaping device 1 and the coal quality detector 3 are both installed on the mounting portion 61. By installing them on the same component, the mounting reference is made the same. Thus, the cumulative error caused by the processing error, assembly error, etc. in the production process of the coal quality detection system can be eliminated, and the △h can be ensured to be close to the fixed value, thereby ensuring that the output result of the detector 3 is more accurate.

[0058] See also Figure 2 、 Figure 4 and Figure 5, the support member 4 includes a pressure roller end support member 41 and a detector end support member 42, and the pressure roller end support member 41 is located below the pressure roller assembly 11. The detector end support member 42 is located below the coal quality detector 3 from the outlet end of the pressure roller assembly 11. In the embodiment of the present application, the pressure roller end support member 41 and the detector end support member 42 are both supporting plates (such as steel plates), with a total of one pressure roller end support member 41 and two detector end supports 42. Each of the mounting portions 61 includes a pressure roller end mounting surface 611 for mounting the pressure roller end support member 41 and a detector end mounting surface 612 for mounting the detection end support member 42. The detector end mounting surface 612 and the pressure roller end mounting surface 611 are coplanar.

[0059] As set up above, since the detector end mounting surface 612 and the pressure roller end mounting surface 611 are coplanar, combined with the aforementioned support member 4 in contact with the conveyor belt 2, the conveyor belt 2 is lifted by the support member 4 (the pressure roller end support member 41 and the detector end support member 42), and the conveyor belt 2 runs on the upper surface of the pressure roller end support member 41 and the detector end support member 42, ensuring that the horizontal height of the upper surface of the conveyor belt 2 (the surface carrying the coal flow) from the pressure roller assembly 11 to the coal quality detector 3 is consistent, and the height relative to the mounting reference surface 31 is also fixed. Ultimately, the closer the △h is to the fixed value, the more accurate the output result of the coal quality detector 3 will be.

[0060] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application shall be included in the scope of protection of this application.

Claims

1. A coal quality detection system, characterized in that: The coal quality detection system includes a coal flow shaping device, a conveyor belt, a coal quality detector and a support member; wherein: The coal flow shaping device includes a pressure roller assembly and a height adjustment assembly: the pressure roller assembly and the coal quality detector are located above the front of the conveyor belt; The support member contacts the back surface of the conveyor belt and supports the conveyor belt so that the conveyor belt is in a straight state; The opposite ends of the pressure roller assembly at a direction perpendicular to the movement direction of the conveyor belt are respectively connected to the height adjustment assembly; the height adjustment assembly adjusts the vertical height of the pressure roller assembly and the conveyor belt.

2. The coal quality detection system according to claim 1, characterized in that: The pressure roller assembly includes a pressure roller shaft; at least one of the height adjustment assemblies includes an adjustment member rotatably connected to the pressure roller shaft, at least two lifting mechanisms, and at least two tightening mechanisms; The coal flow shaping device includes a mounting member, and the adjusting member is connected to the mounting member through the at least two lifting mechanisms and can be raised and lowered relative to the conveyor belt in a direction perpendicular to the conveyor belt; The at least two tightening mechanisms lock the adjusting member and abut against the mounting member, and together with the lifting mechanism, lock the adjusting member at a target height.

3. The coal quality detection system according to claim 2, characterized in that: The at least two lifting mechanisms are spaced apart along the moving direction of the conveyor belt, and each of the lifting mechanisms includes an adjusting member through hole passing through the adjusting member, a mounting member threaded hole provided on the mounting member, and a tightening bolt, and the tightening bolt passes through the adjusting member through hole and is connected to the mounting member screw hole.

4. The coal quality detection system according to claim 2, characterized in that: The at least two tightening mechanisms are spaced apart along the moving direction of the conveyor belt, and each of the tightening mechanisms enables the adjusting member to be located at a target height by cooperating with a tightening bolt and a threaded hole.

5. The coal quality detection system according to claim 4, characterized in that: The threaded hole passes through the adjusting member, the tightening bolt is threadedly connected to the threaded hole, extends from the adjusting member to the target height, and is tightened against the mounting member.

6. The coal quality detection system according to claim 2, characterized in that: The at least two lifting mechanisms are symmetrically arranged relative to the pressure roller axis of the pressure roller assembly; and the at least two tightening mechanisms are symmetrically arranged relative to the pressure roller axis of the pressure roller assembly.

7. The coal quality detection system according to any one of claims 2 to 5, characterized in that: A guide mechanism is provided between the adjusting member and the mounting member, and the guide mechanism includes a guide wall, and the guide wall is perpendicular to the conveyor belt; under the guidance of the guide wall, the pressure roller assembly rises and falls in a direction perpendicular to the conveyor belt.

8. The coal quality detection system according to claim 2, characterized in that: The coal flow shaping device includes a side support member, which supports the adjusting member in the circumferential direction of the adjusting member, and the matching surface between the adjusting member and the side support member is perpendicular to the conveyor belt.

9. The coal quality detection system according to claim 1, characterized in that: The coal quality detection system includes a frame, and the frame includes mounting parts on opposite sides, and the mounting part on each side extends along the moving direction of the conveyor belt; the coal flow shaping device and the coal quality detector are installed across the mounting parts.

10. The coal quality detection system according to claim 9, characterized in that: The support member includes a pressure roller end support member and a detector end support member, wherein the pressure roller end support member is located below the pressure roller assembly; the detector end support member is located between the outlet end of the pressure roller assembly and below the coal quality detector; Each of the mounting portions includes a pressure roller end mounting surface for mounting the pressure roller end support and a detector end mounting surface for mounting the detection end support; the detector end mounting surface and the pressure roller end mounting surface are coplanar.

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