Coal bunker dredging device
By designing a coal storage chamber and a drive mechanism for the unblocking flap inside the coal bunker, the problems of high labor intensity and safety hazards in traditional coal bunker unblocking methods have been solved, achieving efficient coal unblocking and improved equipment wear resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANKUANG ENERGY GRP CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-01
AI Technical Summary
Traditional methods of clearing coal bunkers are labor-intensive, inefficient, and pose safety hazards, resulting in problems such as poor coal unloading.
Design a coal bunker dredging device, including a coal storage chamber and a dredging flap within a coal bunker frame. The dredging flap is driven by a drive mechanism to frequently flip upwards, improving coal flowability. The frequent flipping of the flap is achieved by the cooperation of a motor-driven trigger wheel and trigger rod. A composite polymer wear-resistant material is coated on the flap and the inner wall of the coal storage chamber to increase wear resistance.
It achieves efficient coal dredging, increases the coal falling speed, reduces labor intensity, improves safety, and extends equipment life.
Smart Images
Figure CN224184979U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coal bunker technology, specifically a coal bunker unblocking device. Background Technology
[0002] During coal storage and transportation, coal bunkers are prone to arching or blockage due to high coal moisture content, uneven particle size, or prolonged settling time. When the coal chute at the bottom of the bunker is opened, it can lead to poor coal unloading. Traditional unblocking methods mainly involve manual unblocking, which is not only labor-intensive and inefficient but also poses safety hazards. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a coal bunker clearing device that improves the fluidity of coal in the coal storage chamber, thereby accelerating the falling speed of coal in the coal storage chamber.
[0004] The technical solution of this utility model is implemented as follows:
[0005] A coal bunker unblocking device includes a coal bunker frame, which contains a plurality of adjacent coal storage chambers, with each pair of adjacent coal storage chambers separated by internal reinforcing ribs.
[0006] Each coal storage chamber is equipped with a material discharge plate at the bottom, with a material discharge port in the middle of the material discharge plate;
[0007] Above the material discharge base plate are material platforms distributed on the left and right sides of the material discharge port and gradually tilting downwards towards the material discharge port. The angle of inclination between the material platform and the horizontal plane is 15-25°. Each material platform has a dredging flap rotatably installed on its top via a connecting shaft. Below the material discharge base plate is a drive mechanism that drives the dredging flap to flip upwards.
[0008] Using the above scheme, when the coal chute at the bottom of the coal bunker is transporting coal, the activation of the drive mechanism can drive the unblocking flap to flip up frequently. This can improve the fluidity of the coal in the storage chamber, thereby accelerating the falling speed of the coal in the storage chamber and achieving the purpose of unblocking the coal.
[0009] As a preferred embodiment of a coal bunker unblocking device, the driving mechanism includes a motor installed below the material discharge base plate, a trigger wheel concentrically connected to the motor shaft, at least one trigger protrusion fixed on the edge of the trigger wheel, and a trigger rod installed directly above the trigger wheel that penetrates the material discharge base plate and the material platform and abuts against the bottom of the unblocking flap.
[0010] The surface that triggers the protrusion is a smooth arc surface.
[0011] Using the above scheme, in order to drive the unblocking flap to flip upward frequently, a motor drives the trigger wheel to rotate. When the trigger protrusion of the trigger wheel touches the trigger rod, the trigger rod will touch the unblocking flap upward and flip it upward. Then the unblocking flap will fall down by itself under the action of gravity. When the surface of the trigger wheel other than the trigger protrusion touches the trigger rod, the trigger rod will just not touch the unblocking flap, thus realizing the unblocking flap flipping upward frequently.
[0012] As a preferred embodiment of a coal bunker unblocking device, the trigger rod includes two vertically upward contacts, the positions of which are symmetrical about the middle of the unblocking flap; wherein, the surfaces of the two contacts are smooth arc surfaces.
[0013] In order to make the force more even when the unblocking flap flips up, the two contacts are symmetrically distributed about the middle of the unblocking flap. At this time, both sides of the unblocking flap are subjected to force at the same time, so that the unblocking flap flips up stably.
[0014] As a preferred embodiment of a coal bunker unblocking device, the inner wall of the coal storage chamber and the upper surface of the unblocking flap are coated with a composite polymer wear-resistant material layer, and the surface of the composite polymer wear-resistant material layer is provided with micron-level textured surface.
[0015] To improve the service life of the inner wall of the coal storage chamber and the unblocking flap, the above solution is adopted. A composite polymer wear-resistant material layer is covered to enhance its wear resistance, and a micron-level textured surface is set to reduce the contact area between the two.
[0016] After adopting the above technical solution, the beneficial effects of this utility model are:
[0017] 1. When the coal chute at the bottom of the coal bunker is transporting coal, the start of the drive mechanism can drive the unblocking flap to flip up frequently. This can improve the fluidity of the coal in the storage chamber and accelerate the falling speed of the coal in the storage chamber, thereby achieving the purpose of unblocking the coal.
[0018] 2. To drive the unblocking flap to flip upwards frequently, a motor drives the trigger wheel to rotate. When the trigger protrusion of the trigger wheel touches the trigger rod, the trigger rod will push the unblocking flap upwards and flip it upwards. Then, the unblocking flap will fall down by itself under the action of gravity. When the surface of the trigger wheel other than the trigger protrusion touches the trigger rod, the trigger rod will just not touch the unblocking flap, thus realizing the unblocking flap flipping upwards frequently.
[0019] 3. In order to make the force more even when the unblocking flap flips up, the two contacts are symmetrically distributed about the middle of the unblocking flap. At this time, both sides of the unblocking flap are subjected to force at the same time, so that the unblocking flap flips up stably.
[0020] 4. In order to improve the service life of the inner wall of the coal storage chamber and the unblocking flap, a composite polymer wear-resistant material layer is covered to improve its wear resistance, and a micron-level textured surface is set to reduce the contact area between the two. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 The overall three-dimensional structure of the coal bunker Figure 1 ;
[0023] Figure 2 The overall three-dimensional structure of the coal bunker Figure 2 ;
[0024] Figure 3 The three-dimensional structure of the coal bunker section Figure 1 ;
[0025] Figure 4 The three-dimensional structure of the coal bunker section Figure 2 ;
[0026] Figure 5 The three-dimensional structure of the coal bunker unblocking device when the unblocking flap is not turned up. Figure 1 ;
[0027] Figure 6 The three-dimensional structure of the coal bunker unblocking device when the unblocking flap is not turned up. Figure 2 ;
[0028] Figure 7 for Figure 6 A magnified view of a section at point A in the middle;
[0029] Figure 8 for Figure 6 A 3D structural diagram of the dredging flap when it flips up;
[0030] Figure 9 for Figure 8 A magnified view of a section at point B in the middle;
[0031] The markings in the diagram are: 1-coal bunker frame; 2-coal storage chamber; 3-inner reinforcing rib; 4-discharge bottom plate; 5-discharge port; 6-material platform; 7-connecting shaft; 8-dredging flap; 9-motor; 10-trigger wheel; 11-trigger protrusion; 12-trigger rod; 13-contact. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] See Figures 1 to 9 A coal bunker unblocking device includes a coal bunker frame 1, which contains multiple adjacent coal storage chambers 2. Each pair of adjacent coal storage chambers 2 is separated by internal reinforcing ribs 3. A discharge base plate 4 is installed at the bottom of each coal storage chamber 2, with a discharge port 5 in the center of the base plate 4. Above the discharge base plate 4 are material platforms 6 distributed on the left and right sides of the discharge port 5, gradually tilting downwards towards the discharge port 5. The angle of inclination between the material platforms 6 and the horizontal plane is 15-25°. A unblocking flap 8 is rotatably mounted on the top of each material platform 6 via a connecting shaft 7. A drive mechanism is installed below the discharge base plate 4 to drive the unblocking flap 8 upwards. When the coal chute at the bottom of the coal bunker is conveying coal, activating the drive mechanism causes the unblocking flap 8 to frequently flip upwards, thereby increasing the flowability of coal in the coal storage chambers 2 and accelerating the falling speed of coal in the coal storage chambers 2, thus achieving the purpose of unblocking coal.
[0034] See Figure 7 , Figure 9 The driving mechanism includes a motor 9 installed below the material feeding base plate 4. A trigger wheel 10 is concentrically connected to the shaft of the motor 9. At least one trigger protrusion 11 is fixed on the edge of the trigger wheel 10. A trigger rod 12 is installed directly above the trigger wheel 10, penetrating the material feeding base plate 4 and the material platform 6 and abutting against the bottom of the unblocking flap 8. The surface of the trigger protrusion 11 is a smooth arc surface. In order to drive the unblocking flap 8 to flip upward frequently, the motor 9 drives the trigger wheel 10 to rotate. When the trigger protrusion 11 of the trigger wheel 10 abuts against the trigger rod 12, the trigger rod 12 will abut against the unblocking flap 8 upward and flip it upward. Then the unblocking flap 8 will fall down by itself under the action of gravity. When the surface of the trigger wheel 10 other than the trigger protrusion 11 abuts against the trigger rod 12, the trigger rod 12 just does not abut against the unblocking flap 8, thereby realizing the unblocking flap 8 flipping upward frequently.
[0035] See Figure 7 , Figure 9 The trigger rod 12 includes two vertically upward contacts 13, which are symmetrically positioned about the center of the unblocking flap 8. The surfaces of the two contacts 13 are smooth arc surfaces. To ensure that the unblocking flap 8 is subjected to more even force when it flips upward, the two contacts 13 are symmetrically distributed about the center of the unblocking flap 8. At this time, both sides of the unblocking flap 8 are subjected to force simultaneously, thereby making the unblocking flap 8 flip upward stably.
[0036] In addition, the inner wall of the coal storage chamber 2 and the upper surface of the unblocking flap 8 are coated with a composite polymer wear-resistant material layer (such as polyurethane or modified rubber), and the surface of this composite polymer wear-resistant material layer has a micron-level textured surface. To improve the service life of the inner wall of the coal storage chamber 2 and the unblocking flap 8, they are covered with a composite polymer wear-resistant material layer to enhance their wear resistance, and a micron-level textured surface is provided to reduce the contact area between them.
[0037] The working principle of this utility model:
[0038] In application, a coal chute is installed at the bottom of the coal bunker; when the coal chute is opened, the coal bunker begins to transport coal; when the coal chute is closed, the coal bunker is in a coal storage state.
[0039] During coal conveying, in order to improve the smoothness of coal conveying, the motor 9 at the feed port 5 is started, and the motor 9 drives the trigger wheel 10 to rotate. When the trigger protrusion 11 of the trigger wheel 10 touches the trigger rod 12, the trigger rod 12 will touch the unblocking flap 8 upward and flip it upward. Then the unblocking flap 8 will fall down by itself under the action of gravity. When the surface of the trigger wheel 10 other than the trigger protrusion 11 touches the trigger rod 12, the trigger rod 12 just does not touch the unblocking flap 8, so that the unblocking flap 8 flips upward frequently. At this time, the fluidity of coal in the coal storage chamber 2 can be improved, thereby accelerating the falling speed of coal in the coal storage chamber 2, thus achieving the purpose of coal unblocking.
[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A coal bunker unblocking device, comprising a coal bunker frame, wherein the coal bunker frame contains a plurality of adjacent coal storage chambers, and each pair of adjacent coal storage chambers are spaced apart by internal reinforcing ribs; Its features are: Each coal storage chamber is equipped with a material discharge plate at the bottom, and the material discharge plate has a material discharge port in the middle. Above the material discharge base plate are material platforms distributed on the left and right sides of the material discharge port and gradually tilting downwards towards the material discharge port. Each material platform has a dredging flap rotatably mounted on its top via a connecting shaft. Below the material discharge base plate is a drive mechanism that drives the dredging flap to flip upwards.
2. The coal bunker unblocking device according to claim 1, characterized in that: The angle of inclination between the material platform and the horizontal plane is 15-25°.
3. The coal bunker unblocking device according to claim 1, characterized in that: The drive mechanism includes a motor installed below the material feeding base plate. A trigger wheel is concentrically connected to the rotating shaft of the motor. At least one trigger protrusion is fixed on the edge of the trigger wheel. A trigger rod is installed directly above the trigger wheel, penetrating the material feeding base plate and the material platform and abutting against the bottom of the unblocking flap.
4. The coal bunker unblocking device according to claim 3, characterized in that: When the trigger wheel's trigger protrusion touches the trigger rod, the trigger rod will push upwards against the unblocking flap and flip upwards; when the surface of the trigger wheel other than the trigger protrusion touches the trigger rod, the trigger rod will just not touch the unblocking flap.
5. The coal bunker unblocking device according to claim 4, characterized in that: The surface of the trigger protrusion is a smooth arc surface.
6. The coal bunker unblocking device according to claim 5, characterized in that: The trigger rod includes two vertically upward contacts, which are symmetrical about the middle of the unblocking flap.
7. The coal bunker unblocking device according to claim 6, characterized in that: The surfaces of the two contacts are smooth arc surfaces.
8. The coal bunker unblocking device according to any one of claims 1-7, characterized in that: The inner wall of the coal storage chamber and the upper surface of the unblocking flap are coated with a composite polymer wear-resistant material layer, and the surface of the composite polymer wear-resistant material layer has a micron-level texture.