Coarse pulverized coal conveying device

Abstract

The utility model provides a coarse pulverized coal conveying device, which comprises a protective shell, a material inlet, a material outlet, a conveying belt, a conveying belt, a conveying belt, a conveying belt, a conveying belt, a conveying belt and a conveying belt, and is characterized in that the protective shell is provided with a protective cavity and a material inlet, the vibrating screen component comprises a vibrating screen, and the vibrating screen is arranged in the protection cavity and located below the material inlet; the guide rail is arranged in the protective shell and located below the vibrating screen; the walking part is arranged at the bottom of the vibrating screen component, and the walking part is movably arranged in the guide rail in the extending direction of the guide rail; the bearing plate is arranged in the protective shell and located below the vibrating screen; and the conveying part is located at one end of the first opening, and the feeding end of the conveying part is located below the bearing plate. The utility model solves the problems that in the prior art, coarse pulverized coal is directly conveyed to a grinding machine through a belt conveyor, and when the coarse pulverized coal enters the grinding machine, large-particle materials are easy to block a feed port of the grinding machine, so that the production efficiency is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal powder transportation, in particular to a coarse coal powder transportation device. Background Art

[0002] Coal dust is the product of crushing and grinding coal into fine particles. During coal processing, large lumps of coal are broken down into coarse coal dust by a crusher, and then further ground into fine coal dust by a grinder. In actual production, the coarse coal dust is transported to the grinder via a belt conveyor.

[0003] Although the pulverized coal before entering the mill has undergone preliminary processing, its particle size is typically larger than the final pulverized coal and may contain larger impurities and incompletely crushed coal particles. In existing technology, coarse pulverized coal is directly transported to the mill via a belt conveyor. When the coarse pulverized coal enters the mill, large particles can easily clog the mill's feed port, affecting production efficiency. Utility Model Content

[0004] The utility model provides a coarse coal powder conveying device to solve the problem in the prior art that the coarse coal powder is directly conveyed to the grinder by a belt conveyor, and when the coarse coal powder enters the grinder, the large particles of material easily block the feed port of the grinder, thereby affecting production efficiency.

[0005] The utility model provides a coarse coal powder conveying device, which includes: a protective shell, having a protective cavity and a material inlet that are interconnected, the protective cavity extending along the length direction of the protective shell, one end of the protective cavity in the extension direction being a first opening, and the other end of the protective cavity in the extension direction being a second opening; a vibrating screen component, including a vibrating screen mesh, the vibrating screen mesh having a first filter hole, the vibrating screen mesh being arranged in the protective cavity and below the material inlet; a guide rail, arranged in the protective shell and below the vibrating screen mesh, the guide rail extending along the length direction of the protective cavity; a walking part, arranged at the bottom of the vibrating screen component, the walking part being movably arranged in the guide rail along the extension direction of the guide rail; a receiving plate, arranged in the protective shell and below the vibrating screen mesh; a conveying part, located at one end of the first opening, and a feeding end of the conveying part being located below the receiving plate.

[0006] Furthermore, the vibration screen component also includes: a vibration motor, which is arranged on the vibration screen, and the vibration motor has an output shaft, and the extension direction of the output shaft is perpendicular to the extension direction of the guide rail; and an eccentric wheel, which is arranged on the output shaft.

[0007] Furthermore, the protective shell includes: two side baffles, which are respectively located on both sides of the extension direction of the vibrating screen component; a cover plate, the tops of the two side baffles are respectively fixedly connected to the cover plate, the cover plate and the two side baffles are respectively arranged to form a protective cavity, and the material inlet is arranged on the cover plate.

[0008] Furthermore, the coarse coal powder conveying device also includes: a filter part, which is arranged in the protective cavity, the filter part is located above the vibrating screen, the filter part has a second filter hole, and the aperture of the second filter hole is larger than the aperture of the first filter hole of the vibrating screen.

[0009] Furthermore, the coarse coal powder conveying device further includes: an elastic part, located between the vibrating screen and the receiving plate, one end of the elastic part is connected to the receiving plate, and the other end is connected to the vibrating screen.

[0010] Furthermore, the receiving plate gradually tilts upward in a direction away from the first opening.

[0011] Furthermore, the conveying part includes a bracket, a belt and multiple conveying rollers, the multiple conveying rollers are spaced apart along the extension direction of the bracket, the conveying rollers are rotatably arranged on the bracket, and the belt is mounted on the multiple conveying rollers; the coarse coal powder conveying device also includes: a cleaning part, which is movably arranged on the bracket, and the cleaning part is used to clean the surface of the belt.

[0012] Furthermore, the cleaning portion is located above the belt and extends along the width direction of the belt. The cleaning portion has an initial state and a cleaning state. When the cleaning portion is in the initial state, the cleaning portion is located at a first height, and there is a gap between the cleaning portion and the top surface of the belt; when the cleaning portion is in the cleaning state, the cleaning portion is located at a second height, the cleaning portion abuts against the top surface of the belt, and the cleaning portion is movably arranged on the bracket along the length direction of the belt.

[0013] Furthermore, a fixed groove, a transition groove and a sliding groove are provided on the bracket, the fixed groove is at a first height, the sliding groove is at a second height, the top end of the transition groove is connected to the fixed groove, the bottom end of the transition groove is connected to the sliding groove, the sliding groove extends along the length direction of the bracket, and the cleaning part has a connecting end, which switches its position between the sliding groove and the fixed groove through the transition groove so that the cleaning part is at the first height or the second height.

[0014] Furthermore, the coarse coal powder conveying device also includes: a barrier, which is movably arranged on the bracket, and the barrier has a blocking state and an avoidance state. When the barrier is in the blocking state, the barrier is used to block the fixed groove and the transition groove so that the connecting end of the cleaning part remains in the fixed groove and does not fall into the transition groove; when the barrier is in the avoidance state, the fixed groove, the transition groove and the sliding groove are connected in sequence.

[0015] By applying the technical solution of the present invention, before the coarse coal powder is transported through the conveying part, the guide rail, the walking part and the vibrating screen component are coordinated to make the vibrating screen vibrate to achieve vibration screening of the coarse coal powder on the vibrating screen, and then the coarse coal powder screened out falls into the receiving plate, and is then transported through the conveying part for subsequent grinding and other treatments. The technical solution of the present invention realizes the efficient screening and continuous and stable transportation of coarse coal powder, reduces the entry of larger particles of coarse coal powder into the grinder, reduces the occurrence of larger particles of coarse coal powder clogging the feed port of the grinder during grinding, and improves production efficiency.

[0016] Specifically, when screening and conveying coarse coal powder, the coarse coal powder enters the protective chamber from the material inlet and then falls onto the vibrating screen. The vibrating screen component then vibrates, and the vibrating screen vibrates to screen the coarse coal powder. Smaller particles of coarse coal powder pass through the first filter hole on the vibrating screen and fall onto the receiving plate below. Larger particles of coarse coal powder and impurities are screened out and remain on the vibrating screen. The walking part is arranged at the bottom of the vibrating screen component. When the vibrating screen component vibrates, the walking part moves in the guide rail along the extension direction of the guide rail, driving the vibrating screen to vibrate repeatedly in this direction, thereby guiding the vibrating screen. The movement of the walking part helps to evenly distribute the coal powder on the vibrating screen, thereby improving the screening efficiency of the vibrating screen component. The receiving plate receives the coarse coal powder that falls from the vibrating screen, and then the coarse coal powder will fall into the feed end of the conveying part below the receiving plate. The conveying part conveys the coarse coal powder that has passed the vibration screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 The schematic diagram of the structure of the coarse coal powder conveying device provided by the utility model is shown;

[0019] Figure 2 It shows a schematic structural diagram of the conveying part and the cleaning part provided by the utility model;

[0020] Figure 3 Shown Figure 2 Schematic diagram of the local structure at A in the middle;

[0021] Figure 4 A schematic diagram showing the structure of the interior of the protective shell provided by the present invention is shown;

[0022] Figure 5 The figure shows a schematic structural diagram of the vibration screen component provided by the present invention.

[0023] The above drawings include the following reference numerals:

[0024] 10. Protective shell; 101. Protective cavity; 102. Material inlet;

[0025] 11. Side baffle; 12. Cover plate;

[0026] 20. Vibrating screen components; 21. Vibrating screen mesh; 22. Vibrating motor; 23. Eccentric wheel;

[0027] 30. Guide rails;

[0028] 40. Walking part;

[0029] 50. Attachment plate;

[0030] 60. Conveying unit;

[0031] 61, bracket; 601, fixed groove; 602, transition groove; 603, sliding groove;

[0032] 62. Belt;

[0033] 63. Conveyor roller;

[0034] 70. Filter unit;

[0035] 80, elastic part;

[0036] 90. Cleaning Department;

[0037] 100. Partitioning parts;

[0038] 110. Connecting frame;

[0039] 120, L-shaped board;

[0040] 130. Support leg. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. 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.

[0042] like Figure 1 、 Figure 4 and Figure 5As shown, the embodiment of the present invention provides a coarse coal powder conveying device, which includes a protective shell 10, a vibrating screen component 20, a guide rail 30, a walking part 40, a receiving plate 50 and a conveying part 60. The protective shell 10 has a protective cavity 101 and a material inlet 102 that are interconnected. The protective cavity 101 extends along the length direction of the protective shell 10. One end of the protective cavity 101 in the extension direction is a first opening, and the other end of the protective cavity 101 in the extension direction is a second opening; the vibrating screen component 20 includes a vibrating screen 21, and the vibrating screen 21 has a first filtering hole, and the vibrating screen 21 has a first filtering hole. The moving screen 21 is arranged in the protective cavity 101 and is located below the material inlet 102; the guide rail 30 is arranged in the protective shell 10 and is located below the vibrating screen 21, and the guide rail 30 extends along the length direction of the protective cavity 101; the walking part 40 is arranged at the bottom of the vibrating screen component 20, and the walking part 40 is movably arranged in the guide rail 30 along the extension direction of the guide rail 30; the receiving plate 50 is arranged in the protective shell 10 and is located below the vibrating screen 21; the conveying part 60 is located at one end of the first opening, and the feeding end of the conveying part 60 is located below the receiving plate 50.

[0043] Using the technical solution of the present invention, before the coarse coal powder is transported through the conveyor unit 60, the guide rail 30, the running unit 40, and the vibrating screen assembly 20 cooperate to vibrate the vibrating screen 21, thereby vibrating and screening the coarse coal powder on the vibrating screen 21. The screened coarse coal powder then falls onto the receiving plate 50 and is then transported through the conveyor unit 60 for subsequent grinding and other processing. The technical solution of the present invention achieves efficient screening and continuous and stable transportation of coarse coal powder, reduces the occurrence of larger particles of coarse coal powder entering the grinder, and reduces the occurrence of larger particles of coarse coal powder clogging the grinder feed port during grinding, thereby improving production efficiency.

[0044] Specifically, when the coarse coal powder is screened and conveyed, the coarse coal powder enters the protective chamber 101 from the material inlet 102, and then falls onto the vibrating screen 21. The vibrating screen component 20 then vibrates, and the vibrating screen 21 vibrates to screen the coarse coal powder. The smaller particles of coarse coal powder pass through the first filter hole on the vibrating screen 21 and fall onto the receiving plate 50 below, while the larger particles of coarse coal powder and impurities are screened out and remain on the vibrating screen 21.

[0045] The running section 40 is disposed at the bottom of the vibrating screen assembly 20. When the vibrating screen assembly 20 vibrates, the running section 40 moves within the guide rail 30 in the direction in which the guide rail 30 extends, driving the vibrating screen 21 in this direction. The movement of the running section 40 helps evenly distribute the pulverized coal on the vibrating screen 21, thereby improving the screening efficiency of the vibrating screen assembly 20. The receiving plate 50 catches the coarse pulverized coal that falls from the vibrating screen 21. The pulverized coal on the receiving plate 50 is pushed onto the conveying section 60, which then transports the coarse pulverized coal after the vibrating screening.

[0046] In an embodiment of the present scheme, the protective shell 10 serves as the outer frame of the entire device. The protective shell 10 forms a protective cavity 101 that can accommodate the vibrating screen component 20, the guide rail 30, the walking part 40 and the receiving plate 50. The protective shell 10 protects the components inside it.

[0047] In the embodiment of this solution, the vibrating screen 21 extends in the same direction as the protective cavity 101. Two sets of running parts 40 are provided, and the two sets of running parts 40 are spaced apart along the width direction of the vibrating screen 21. Each set of running parts 40 includes a plurality of running wheels spaced apart along the extension direction of the vibrating screen 21. Two guide rails 30 are provided, and the guide rails 30 are arranged in a one-to-one correspondence with the running parts 40. The two guide rails 30 are respectively arranged on both sides of the extension direction of the vibrating screen 21.

[0048] In the embodiment of this solution, a connecting bracket 110 is fixedly connected to the bottom of the guide rail 30. The bottom end of the connecting bracket 110 is fixedly connected to the docking plate 50, so that the guide rail 30 is fixedly mounted on the docking plate 50 via the connecting bracket 110. Two L-shaped plates 120 are fixedly connected below the docking plate 50. The two L-shaped plates are symmetrically arranged along the length of the docking plate 50. The two L-shaped plates 120 are respectively arranged at both ends of the docking plate 50 in the width direction, and the extension direction of the L-shaped plates is the same as the extension direction of the docking plate 50.

[0049] Furthermore, the vibration screen component 20 also includes a vibration motor 22 and an eccentric wheel 23. The vibration motor 22 is arranged on the vibration screen 21. The vibration motor 22 has an output shaft, and the extension direction of the output shaft is perpendicular to the extension direction of the guide rail 30. The eccentric wheel 23 is arranged on the output shaft.

[0050] In the embodiment of this solution, when the vibration motor 22 drives the vibrating screen 21 to vibrate, the output shaft of the vibration motor 22 rotates, driving the eccentric wheel 23 mounted on the output shaft to rotate. The rotation of the eccentric wheel 23 causes the vibrating screen 21 to vibrate at a high frequency. The vibration of the vibrating screen 21 drives the running unit 40 to vibrate. Under the action of the guide rail 30, the running unit 40 drives the vibrating screen 21 to reciprocate within the guide rail 30, thereby accelerating the vibratory screening of coarse coal powder.

[0051] In the embodiment of this solution, the vibration amplitude of the vibrating screen 21 can be controlled by adjusting the rotation speed of the vibrating motor 22 to adapt to coarse coal powder with different characteristics and achieve the best screening effect.

[0052] Specifically, the protective housing 10 includes two side baffles 11 and a cover plate 12. Two side baffles 11 are provided, one located on either side of the vibrating screen assembly 20 in its extending direction. The tops of the two side baffles 11 are fixedly connected to the cover plate 12. The cover plate 12 and the two side baffles 11 enclose a protective cavity 101, with a material inlet 102 provided on the cover plate 12. This arrangement creates a first opening and a second opening at each end of the protective cavity 101 in its extending direction.

[0053] In the embodiment of this solution, the material inlet 102 is provided on a side of the cover plate 12 close to the second opening.

[0054] In an embodiment of the present scheme, the side end surfaces of the two L-shaped plates 120 are fixedly connected to the bottom ends of the two side baffles 11 respectively, and support feet 130 are installed at both ends of the bottom surfaces of the two L-shaped plates 120, with a total of four support feet 130, which serve as support.

[0055] The supporting legs 130 are supporting cylinders, which can adjust the height of the protective shell 10 .

[0056] like Figure 4 As shown, the coarse coal dust conveying device further includes a filter unit 70, which is disposed within the protective cavity 101 and above the vibrating screen 21. The filter unit 70 has a second filter hole, the aperture of which is larger than the aperture of the first filter hole of the vibrating screen 21. This arrangement allows the coarse coal slag to be initially screened by the filter unit 70 before falling onto the vibrating screen 21. The larger second filter hole can separate oversized coal lumps and impurities from the coarse coal dust, thereby improving the screening efficiency of the vibrating screen component 20.

[0057] Furthermore, the coarse coal powder conveying device further includes an elastic portion 80 , which is located between the vibrating screen 21 and the receiving plate 50 . One end of the elastic portion 80 is connected to the receiving plate 50 , and the other end is connected to the vibrating screen 21 .

[0058] In an embodiment of the present invention, two elastic portions 80 are installed on either side of the vibrating screen 21 in its extension direction, for a total of four elastic portions 80. The two elastic portions 80 located on the same side of the vibrating screen 21 are spaced apart along the length of the vibrating screen 21. When the vibration motor 22 drives the vibrating screen 21 to vibrate, the vibration of the vibrating screen 21 causes the elastic portions 80 to shake. The provision of the elastic portions 80 can prevent the vibrating screen 21 from undergoing significant displacement along the extension direction of the guide rail 30 under the action of the walking portion 40 and the guide rail 30. The elastic portions 80 make the movement of the vibrating screen 21 in the extension direction of the guide rail 30 controllable, thereby improving the controllability of the coarse coal powder conveying device.

[0059] Furthermore, the receiving plate 50 gradually tilts upward, away from the first opening. This arrangement allows the screened coarse coal powder to slide down under its own weight, passing through the first opening and onto the conveying portion 60 below for further transportation. This also helps reduce the accumulation of coarse coal powder on the receiving plate 50, ensuring the continuity of the coarse coal powder transportation process.

[0060] like Figure 2 As shown, further, the conveying part 60 includes a bracket 61, a belt 62 and a plurality of conveying rollers 63, the plurality of conveying rollers 63 are spaced apart along the extension direction of the bracket 61, the conveying rollers 63 are rotatably provided on the bracket 61, and the belt 62 is sleeved on the plurality of conveying rollers 63; the coarse coal powder conveying device also includes a cleaning part 90, the cleaning part 90 is movably provided on the bracket 61, and the cleaning part 90 is used to clean the upper surface of the belt 62.

[0061] In the embodiment of this solution, a bracket 61 provides stable support for the entire conveyor section 60. A plurality of conveyor rollers 63 are spaced apart along the extension direction of the bracket 61. These conveyor rollers 63 are rotatably mounted on the bracket 61, and a belt 62 is mounted on the plurality of conveyor rollers 63. After the screened coarse coal powder falls onto the belt 62 of the conveyor section 60, the belt 62 continuously rotates along the extension direction of the bracket 61, driven by the rolling of the plurality of conveyor rollers 63. The belt 62 gradually moves the coarse coal powder away from the protective housing 10 until it is transported to the next process location.

[0062] Furthermore, the cleaning unit 90 is located above the belt 62 and extends along the width of the belt 62. The cleaning unit 90 has an initial state and a cleaning state. When the cleaning unit 90 is in the initial state, the cleaning unit 90 is at a first height, with a gap between the cleaning unit 90 and the top surface of the belt 62. When the cleaning unit 90 is in the cleaning state, the cleaning unit 90 is at a second height, with the cleaning unit 90 contacting the top surface of the belt 62. This arrangement allows the cleaning unit 90 to be at the second height when the belt 62 is conveying coarse coal powder and does not need to be cleaned, thereby reducing interference with the coarse coal powder conveying process.

[0063] like Figure 3 As shown, further, a fixed groove 601, a transition groove 602 and a sliding groove 603 are provided on the bracket 61, the fixed groove 601 is at a first height, the sliding groove 603 is at a second height, the top end of the transition groove 602 is connected to the fixed groove 601, and the bottom end of the transition groove 602 is connected to the sliding groove 603, and the sliding groove 603 extends along the length direction of the bracket 61, and the cleaning part 90 has a connecting end, which switches its position between the sliding groove 603 and the fixed groove 601 through the transition groove 602 so that the cleaning part 90 is at the first height or the second height.

[0064] It can be understood that in the embodiment of the present scheme, when the belt 62 needs to be cleaned, the cleaning part 90 is driven so that the connecting end of the cleaning part 90 moves back and forth in the sliding groove 603, so that the cleaning part 90 as a whole moves back and forth along the extension direction of the sliding groove 603 to achieve cleaning of the surface of the belt 62.

[0065] Specifically, the bracket 61 is provided with a fixed groove 601, a transition groove 602, and a sliding groove 603 on both sides of the bracket 61 in the longitudinal direction. The cleaning unit 90 has two connecting ends, each corresponding to the two sets of connecting groove structures formed by the fixed groove 601, the transition groove 602, and the sliding groove 603. This arrangement can improve the stability of the cleaning unit 90 during the cleaning process.

[0066] In the embodiment of this solution, the transition groove 602 extends in the vertical direction, and the top and bottom ends of the transition groove 602 are respectively connected to the ends of the fixed groove 601 and the sliding groove 603. The fixed groove 601 and the sliding groove 603 are located on the same side of the transition groove 602, and both the fixed groove 601 and the sliding groove 603 are parallel to the extension direction of the conveying portion 60.

[0067] When the cleaning section 90 is in the initial state and no cleaning operation is being performed, the connection end of the cleaning section 90 is located in the fixed groove 601, and the cleaning section 90 is at a first height, maintaining a distance from the upper surface of the belt 62; when the surface of the belt 62 needs to be cleaned, the connection end of the cleaning section 90 descends from the fixed groove 601 to the sliding groove 603 through the transition groove 602. At this time, the cleaning section 90 descends to the second height, and the cleaning section 90 switches to the cleaning state. The cleaning section 90 contacts the upper surface of the belt 62, and the cleaning section 90 moves in the sliding groove 603 along the extension direction of the sliding groove 603 to clean the upper surface of the belt 62; after completing the cleaning of the belt 62, the connection end of the cleaning section 90 rises from the sliding groove 603 to the fixed groove 601 through the transition groove 602 again, and the cleaning section 90 returns to the initial state.

[0068] The design of the fixed groove 601, the transition groove 602, and the sliding groove 603 makes the switching between the initial state and the cleaning state of the cleaning unit 90 smoother and more reliable. The design of the sliding groove 603 enables the cleaning unit 90 to move along the extension direction of the sliding groove 603, and the sliding groove 603 plays a guiding role in the movement of the cleaning unit 90.

[0069] Furthermore, the coarse coal powder conveying device also includes a barrier 100, which is movably arranged on the bracket 61. The barrier 100 has a blocking state and an avoidance state. When the barrier 100 is in the blocking state, the barrier 100 is used to block the fixed groove 601 and the transition groove 602, so that the connecting end of the cleaning part 90 remains in the fixed groove 601 and does not fall into the transition groove 602; when the barrier 100 is in the avoidance state, the fixed groove 601, the transition groove 602 and the sliding groove 603 are connected in sequence.

[0070] Specifically, when the barrier 100 is in the blocking state, it separates the fixed groove 601 from the sliding groove 603, allowing the connection end of the cleaning unit 90 to remain in the fixed groove 601 and not fall into the sliding groove 603. This allows the cleaning unit 90 to remain at the first height, preventing the cleaning unit 90 from accidentally falling into the sliding groove 603 when the conveying unit 60 is conveying coarse coal slag, thereby affecting the transportation of the coarse coal slag. When the cleaning unit 90 needs to clean the belt 62, the barrier 100 switches to the avoidance state, and the fixed groove 601, the transition groove 602, and the sliding groove 603 are connected in sequence, allowing the cleaning unit to pass through the transition groove 602 and fall into the sliding groove 603, thereby cleaning the upper surface of the belt 62. The barrier 100 enhances the controllability of the cleaning unit 90 in switching between the initial state and the cleaning state, thereby improving the reliability of the coarse coal powder conveying device.

[0071] In an embodiment of the present scheme, the portion between the sliding groove 603 and the fixed groove 601 forms a connecting portion, and the bottom end of the barrier 100 can be hingedly set at one end of the connecting portion close to the transition groove 602, and the top end of the barrier 100 is used to block or open the end of the fixed groove 601 close to the transition groove 602, so that the fixed groove 601 and the transition groove 602 are separated or connected.

[0072] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0073] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0074] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0075] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0076] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0077] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A coarse coal powder conveying device, characterized in that: include: A protective shell (10) having a protective cavity (101) and a material inlet (102) that are interconnected, wherein the protective cavity (101) extends along the length direction of the protective shell (10), and one end of the protective cavity (101) in the extension direction is a first opening; A vibrating screen component (20) includes a vibrating screen (21), wherein the vibrating screen (21) has a first filter hole, and the vibrating screen (21) is arranged in the protective cavity (101) and below the material inlet (102); A guide rail (30) is provided in the protective shell (10) and is located below the vibrating screen (21), and the guide rail (30) extends along the length direction of the protective cavity (101); A walking portion (40) is provided at the bottom of the vibrating screen component (20), and the walking portion (40) is movably provided in the guide rail (30) along the extension direction of the guide rail (30); A receiving plate (50) is arranged in the protective shell (10) and is located below the vibrating screen (21); The conveying portion (60) is located at one end of the first opening, and the feeding end of the conveying portion (60) is located below the receiving plate (50).

2. The coarse coal powder conveying device according to claim 1, characterized in that: The vibrating screen component (20) further comprises: a vibration motor (22) disposed on the vibration screen (21), the vibration motor (22) having an output shaft, the extension direction of the output shaft being perpendicular to the extension direction of the guide rail (30); An eccentric wheel (23) is arranged on the output shaft.

3. The coarse coal powder conveying device according to claim 1, characterized in that: The protective shell (10) comprises: Two side baffles (11) are provided, and the two side baffles (11) are respectively located on both sides of the extension direction of the vibrating screen component (20); The cover plate (12) is fixedly connected to the tops of the two side baffles (11) respectively. The cover plate (12) and the two side baffles (11) are arranged to form the protective cavity (101). The material inlet (102) is arranged on the cover plate (12).

4. The coarse coal powder conveying device according to claim 1, characterized in that: The coarse coal powder conveying device also includes: A filter portion (70) is arranged in the protective cavity (101), the filter portion (70) is located above the vibrating screen (21), and the filter portion (70) has a second filter hole, the aperture of the second filter hole is larger than the aperture of the first filter hole of the vibrating screen (21).

5. The coarse coal powder conveying device according to claim 1, characterized in that: The coarse coal powder conveying device also includes: The elastic part (80) is located between the vibration screen (21) and the receiving plate (50), one end of the elastic part (80) is connected to the receiving plate (50), and the other end is connected to the vibration screen (21).

6. The coarse coal powder conveying device according to claim 1, characterized in that: The receiving plate (50) gradually tilts upward in a direction away from the first opening.

7. The coarse coal powder conveying device according to claim 1, characterized in that: The conveying portion (60) includes a bracket (61), a belt (62) and a plurality of conveying rollers (63), wherein the plurality of conveying rollers (63) are spaced apart along the extending direction of the bracket (61), the conveying rollers (63) are rotatably arranged on the bracket (61), and the belt (62) is sleeved on the plurality of conveying rollers (63); the coarse coal powder conveying device further includes: A cleaning portion (90) is movably arranged on the bracket (61), and the cleaning portion (90) is used to clean the surface of the belt (62).

8. The coarse coal powder conveying device according to claim 7, characterized in that: The cleaning portion (90) is located above the belt (62), and the cleaning portion (90) extends along the width direction of the belt (62). The cleaning portion (90) has an initial state and a cleaning state. When the cleaning portion (90) is in the initial state, the cleaning portion (90) is located at a first height, and there is a gap between the cleaning portion (90) and the top surface of the belt (62); when the cleaning portion (90) is in the cleaning state, the cleaning portion (90) is located at a second height, and the cleaning portion (90) abuts against the top surface of the belt (62), and the cleaning portion (90) is movably arranged on the bracket (61) along the length direction of the belt (62).

9. The coarse coal powder conveying device according to claim 8, characterized in that: The bracket (61) is provided with a fixed groove (601), a transition groove (602) and a sliding groove (603), the fixed groove (601) is at the first height, the sliding groove (603) is at the second height, the top end of the transition groove (602) is connected to the fixed groove (601), and the bottom end of the transition groove (602) is connected to the sliding groove (603), and the sliding groove (603) extends along the length direction of the bracket (61), and the cleaning part (90) has a connecting end, and the connecting end switches between the sliding groove (603) and the fixed groove (601) through the transition groove (602) so that the cleaning part (90) is at the first height or the second height.

10. The coarse coal powder conveying device according to claim 9, characterized in that: The coarse coal powder conveying device also includes: A barrier member (100) is movably arranged on the bracket (61), and the barrier member (100) has a blocking state and an avoidance state. When the barrier member (100) is in the blocking state, the barrier member (100) is used to block the fixed groove (601) and the transition groove (602), so that the connection end of the cleaning portion (90) remains in the fixed groove (601) and does not fall into the transition groove (602); when the barrier member (100) is in the avoidance state, the fixed groove (601), the transition groove (602) and the sliding groove (603) are connected in sequence.

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