Flexible rotary unblocking device for coal bunker

Abstract

The utility model relates to coal bunker plugging removal technology field provides a kind of coal bunker flexible rotary plugging removal device, it includes rotary drive part, flexible rod body and flexible drill bit;Wherein, one end of flexible rod body is detachably connected with the power output end of rotary drive part, and the other end of flexible rod body is fixedly provided with flexible drill bit, and flexible drill bit can rotate with flexible rod body, to clean the coal slime adhered on coal bunker wall.The coal bunker flexible rotary plugging removal device provided by the utility model is replaced with the structure of flexible rod body and flexible drill bit, instead of the hard drill rod used in traditional plugging removal, by the flexible rod body bendable characteristics, so that it can rotate when cleaning coal slime, avoid hard contact with cemented coal slime.The flexible drill bit rotates effectively to clean the coal slime adhered on the wall, solves the technical problems in related art that hard drill rod cannot be adapted to irregular coal bunker space due to its rigidity, and is easy to be stuck or broken due to uneven force when handling coal slime, further leading to the interruption of plugging removal operation.

Description

Technical Field

[0001] This utility model relates to the field of coal bunker unblocking technology, specifically to a flexible rotary unblocking device for coal bunkers. Background Technology

[0002] In the core links of the coal industry chain, such as coal mining and coal washing, coal bunkers are critical infrastructure connecting coal storage and transportation. Their main function is to temporarily store raw coal or washed coal, ensuring the continuous and stable operation of subsequent production processes such as conveying, crushing, and screening. However, during storage, coal is highly susceptible to forming a coal sludge layer on the inner wall of the bunker due to factors such as its moisture content, viscous components, and storage time. As the accumulation time increases, the coal sludge gradually hardens and thickens, eventually causing blockages in the bunker or narrowing of the conveying channels. In severe cases, it can even lead to a complete production halt, causing huge economic losses to enterprises. Therefore, timely and efficient clearing of coal bunker blockages is a crucial link in ensuring the production efficiency of coal enterprises.

[0003] Currently, the mainstream technical solution for unclogging coal bunkers in the industry still relies on hard drill rods in conjunction with drive equipment. The core principle of this approach is to use the rigid impact or rotary cutting of the hard drill rod to break up the caking coal sludge on the bunker walls, thereby achieving the unclogging purpose. However, in practical applications, this technical solution has several insurmountable drawbacks: First, the internal space of a coal bunker is not a regular cylindrical or square structure. Due to construction processes and long-term wear, the bunker walls are prone to unevenness and localized narrowness. Hard drill rods, due to their rigidity and inflexibility, are difficult to adapt to these complex spaces. They not only fail to reach some hidden coal sludge blockage areas but may also collide with protruding parts of the bunker walls, causing the drill rod to deviate and affecting the unclogging accuracy. Second, when dealing with caking coal sludge with high moisture content and strong viscosity, the contact area between the hard drill rod and the coal sludge is limited, and the force is concentrated... In the process, the drill rod is easily stuck in the blockage layer due to excessive resistance from the coal slurry. If the driving force is forcibly increased, the drill rod will break due to uneven stress. After the drill rod is stuck or broken, it will not only directly interrupt the clearing operation and prolong the downtime of the coal bunker, but the broken drill rod fragments will also remain in the coal slurry, forming new blockage obstacles and further increasing the difficulty and workload of subsequent clearing. In addition, the frequent jamming and breakage of hard drill rods will significantly increase the cost of tool wear and tear. At the same time, the operators need to adjust the position of the drill rod at close range, which increases the safety risk of being injured by falling coal slurry or trapped due to the collapse of the bunker wall. This seriously restricts the efficiency, safety and economy of coal bunker clearing operations. Utility Model Content

[0004] To overcome the above-mentioned defects, the present invention provides a flexible rotary unblocking device for coal bunkers, which solves the technical problem in the related technology that hard drill rods are too rigid to adapt to irregular coal bunker spaces, and are prone to uneven stress, jamming or breaking when processing coal slurry, thus leading to interruption of unblocking operations.

[0005] According to one aspect, at least one embodiment of the present invention provides a flexible rotary unblocking device for a coal bunker, comprising: Rotation drive component; A flexible rod is provided, one end of which is detachably connected to the power output end of the rotating drive component, and the other end of which is fixedly provided with a flexible drill bit. The flexible drill bit can rotate with the flexible rod to clean the coal sludge adhering to the coal bunker wall.

[0006] For example, in a flexible rotary unblocking device for a coal bunker provided in at least one embodiment of the present invention, a guide assembly is provided on the flexible rod body, and the guide assembly is used to adjust the position of the flexible drill bit.

[0007] For example, in at least one embodiment of this utility model, a flexible rotary unblocking device for a coal bunker is provided, wherein the flexible rod is welded and fixed to the flexible drill bit.

[0008] For example, in at least one embodiment of this utility model, a flexible rotary unblocking device for a coal bunker is provided, wherein the flexible rod is an anchor cable.

[0009] For example, in a flexible rotary unblocking device for a coal bunker provided in at least one embodiment of the present invention, the flexible rod and the flexible drill bit are an integral structure, and the flexible drill bit is formed after the end of the flexible rod away from the rotary drive component is spread out.

[0010] For example, in at least one embodiment of this utility model, a flexible rotary unblocking device for a coal bunker is provided, wherein the rotary drive component is a pneumatic drill.

[0011] For example, in a flexible rotary unblocking device for a coal bunker provided in at least one embodiment of the present invention, the rotary drive component has an air inlet, the air inlet is connected to an air duct, and the air duct is used to transmit compressed air to the rotary drive component to make the power output end of the rotary drive component rotate.

[0012] For example, in at least one embodiment of the present invention, a flexible rotary unblocking device for a coal bunker includes a guiding assembly comprising: A sleeve, which is fitted onto the flexible rod; An auxiliary rod is disposed on the outer wall of the sleeve. The auxiliary rod can push and pull the sleeve to adjust the position of the flexible rod through the sleeve.

[0013] For example, in at least one embodiment of this utility model, a flexible rotary unblocking device for a coal bunker is provided, wherein the flexible drill bit is provided with a barbed hook.

[0014] For example, in at least one embodiment of the present invention, a flexible rotary unblocking device for a coal bunker is provided, wherein the rotary drive component is provided with a gripping part.

[0015] The beneficial effects of this utility model are as follows: In this invention, during coal bunker unblocking operations, the end of the flexible rod furthest from the flexible drill bit is first connected and fixed to the power output end of the rotating drive component. Then, the flexible drill bit and the flexible rod are inserted together into the blocked area within the coal bunker. The rotating drive component is activated, and its power output end drives the flexible rod to rotate, which in turn drives the flexible drill bit fixed at its end to rotate synchronously. The rotating flexible drill bit contacts the coal sludge adhering to the coal bunker wall, cutting and agitating the sludge, causing it to detach from the bunker wall and completing the unblocking operation. When it is necessary to replace the flexible rod or the flexible drill bit, the flexible rod is separated from the power output end of the rotating drive component, allowing for individual replacement of either the flexible rod or the flexible drill bit. Compared to traditional rigid drill rods, flexible rods are bendable and can adapt to the irregular spatial structure inside coal bunkers. This avoids dead corners caused by rigidity preventing them from fitting the bunker wall or colliding with protruding parts of the bunker wall. At the same time, when the flexible drill bit rotates with the flexible rod, it can fit the bunker wall better. Furthermore, during the process of processing coal slurry, the flexible rod can deform appropriately with the resistance of the coal slurry, avoiding stress concentration. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a flexible rotary unblocking device for a coal bunker in one embodiment of the present invention; Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0018] In the diagram: 1. Rotation drive component; 2. Flexible rod; 3. Flexible drill bit; 4. Guide assembly; 41. Sleeve; 42. Auxiliary rod; 5. Air duct; 6. Grip part. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0020] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0021] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] like Figures 1-2As shown, this embodiment provides a flexible rotary unblocking device for coal bunkers, which includes a rotary drive component 1, a flexible rod 2, and a flexible drill bit 3. One end of the flexible rod 2 is detachably connected to the power output end of the rotary drive component 1, and the other end of the flexible rod 2 is fixedly equipped with the flexible drill bit 3. The flexible drill bit 3 can rotate with the flexible rod 2 to clean the coal sludge adhering to the coal bunker wall.

[0026] When clearing blockages in a coal bunker, first connect and fix the end of the flexible rod 2 furthest from the flexible drill bit 3 to the power output end of the rotating drive 1. Then, insert the flexible drill bit 3 and the flexible rod 2 together into the blocked area inside the coal bunker. Start the rotating drive 1, and the power output end of the rotating drive 1 drives the flexible rod 2 to rotate. The flexible rod 2 then drives the flexible drill bit 3 fixed at its end to rotate synchronously. The rotating flexible drill bit 3 comes into contact with the coal sludge adhering to the coal bunker wall, cutting and agitating the coal sludge, causing it to detach from the bunker wall, thus completing the clearing operation. When it is necessary to replace the flexible rod 2 or the flexible drill bit 3, separate the flexible rod 2 from the power output end of the rotating drive 1, and the flexible rod 2 or the flexible drill bit 3 can be replaced individually.

[0027] Compared to traditional hard drill rods, the flexible rod 2 is bendable and can adapt to the irregular spatial structure inside the coal bunker, avoiding dead corners caused by rigidity failing to fit the bunker wall or colliding with protruding parts of the bunker wall. At the same time, when the flexible drill bit 3 rotates with the flexible rod 2, it can fit the bunker wall better. Furthermore, during the process of processing coal slurry, the flexible rod 2 can deform appropriately with the resistance of the coal slurry, avoiding stress concentration.

[0028] One end of the flexible rod 2 is detachably connected to the power output end of the rotating drive 1. The detachable connection between the flexible rod 2 and the rotating drive 1 is the same as or similar to the connection between an electric drill and a drill bit. When the flexible rod 2 or the flexible drill bit 3 is damaged, the flexible rod 2 can be separated from the rotating drive 1, and the damaged flexible rod 2 and flexible drill bit 3 can be directly replaced. This makes it easy to replace the flexible rod 2 and flexible drill bit 3 of different specifications according to the coal bunker blockage, thus improving the flexibility of the device.

[0029] Specifically, the flexible rod 2 is also equipped with a guide component 4 for adjusting the position of the flexible drill bit 3. During the coal bunker cleaning process, the position of the flexible rod 2 is adjusted by the guide component 4, thereby changing the working position of the flexible drill bit 3 to adapt to the unblocking needs of different areas within the coal bunker. During unblocking operations, when it is necessary to adjust the position of the flexible drill bit 3 within the coal bunker to clean coal sludge in different areas, the guide component 4 is operated. The guide component 4 acts on the flexible rod 2, causing the flexible rod 2 to change position, thereby moving the flexible drill bit 3 to the target position, achieving the cleaning of coal sludge in different locations within the coal bunker.

[0030] The guide component 4 can adjust the position of the flexible drill bit 3, allowing it to reach more different areas within the coal bunker, thus expanding the cleaning range and preventing situations where coal sludge cannot be cleaned in certain areas due to the fixed position of the flexible drill bit 3.

[0031] Specifically, the flexible rod 2 and the flexible drill bit 3 are fixed together by welding. Welding connects the flexible rod 2 and the flexible drill bit 3 into a single unit, preventing relative loosening or displacement during rotation and sludge removal. This ensures the stability and reliability of the flexible drill bit 3's rotation, guaranteeing effective coal sludge removal. This fixing method can withstand significant rotational torque and impact forces during the cleaning process, reducing malfunctions caused by connection issues, extending the device's service life, and, in conjunction with the rotation drive component 1 and the flexible rod 2, improving the overall stability of the device. The flexible rod 2 can be made of anchor cable. As the flexible rod 2, the anchor cable possesses both good flexibility to adapt to the irregular space of the coal bunker and high strength and toughness, capable of withstanding the torque during rotation and the resistance during coal sludge removal, and is not easily damaged, ensuring stable operation of the device.

[0032] Optionally, the flexible rod 2 and the flexible drill bit 3 are an integral structure, with the flexible rod 2's end furthest from the rotating drive component 1 spreading out to form the flexible drill bit 3. Utilizing the inherent multi-strand cable aggregation characteristics of the anchor cable, by spreading its end furthest from the rotating drive component 1, the originally aggregated cables form a radially distributed structure. This spread-out structure serves as the flexible drill bit 3, preserving the anchor cable's flexibility to adapt to irregular coal bunker spaces while expanding the contact area with coal slurry through the spread-out multi-strand cables, thus facilitating the cleaning of coal slurry in conjunction with rotation. Simultaneously, the integral structure design eliminates the need for additional connecting components, ensuring direct and stable power transmission. Since the flexible drill bit 3 is obtained by spreading out the multi-strand cables at one end of the anchor cable, the spread-out cables are susceptible to external forces such as rotational torque and coal slurry resistance, potentially leading to misalignment and loosening. Therefore, to ensure a reliable integral structure between the flexible drill bit 3 and the anchor cable, the connection points must be fixed using welding.

[0033] Optionally, the rotary drive 1 can be a pneumatic drill rig, which has an air inlet connected to an air duct 5. The air duct 5 is used to transmit compressed air to the rotary drive 1 to rotate the power output end of the rotary drive 1. Using the pneumatic drill rig as a power source, power is provided for the rotation of the flexible rod and flexible drill bit 3. Compressed air is transmitted through the air duct 5 to the air inlet of the rotary drive 1, providing power to the pneumatic drill rig and driving the power end of the rotary drive 1 to rotate, thereby driving the flexible rod 2 and flexible drill bit 3 to rotate to clean the coal slurry.

[0034] The duct 5 can provide a stable source of compressed air, ensuring that the rotating drive 1 can maintain a stable output power, so that the flexible rod 2 and the flexible drill bit 3 can maintain a stable rotation state, ensuring the continuity of light operations.

[0035] Optionally, the guide assembly 4 includes a sleeve 41 and an auxiliary rod 42. The sleeve 41 is fitted onto the flexible rod 2, and the auxiliary rod 42 is disposed on the outer wall of the sleeve 41 and can be connected to the sleeve 41 by welding. The auxiliary rod 42 can push and pull the sleeve 41 to adjust the position of the flexible rod 2. When the position of the flexible drill bit 3 needs to be adjusted, the operator pushes and pulls the auxiliary rod 42, which moves the sleeve 41, thereby causing the sleeve 41 to act on the flexible rod 2 and change the position of the flexible rod 2. The auxiliary rod 42 then moves the flexible drill bit 3 to the required position to clean the coal slime in the corresponding area.

[0036] Specifically, the flexible drill bit 3 is equipped with barbed hooks. These barbed hooks enhance the gripping and stripping ability of the flexible drill bit 3 on the coal slurry during rotation, improving the cleaning effect. The working principle is as follows: the rotating drive component 1 drives the flexible rod body 2 and the flexible drill bit 3 to rotate. The barbed hooks on the flexible drill bit 3 rotate together with the flexible drill bit 3, piercing into the coal slurry. During rotation, the barbed hooks grip and strip the coal slurry from the bin wall, completing the unblocking operation.

[0037] Specifically, the rotating drive component 1 is equipped with a gripping part 6, which facilitates the operator in maintaining the rotating drive component 1 and better controlling the position of the device to adapt to different unclogging needs. The operator can control the position and angle of the rotating drive component 1 by gripping the gripping part 6 on the rotating drive component 1, thereby adjusting the position of the flexible rod 2 and the flexible drill bit 3 in the coal bunker, so that the flexible drill bit 3 can more accurately clean the coal slurry.

[0038] Furthermore, when clearing blockages in the coal bunker, the preparation stage begins by closing the upper gate of the coal bunker to prevent coal from continuing to enter the blocked area. At the same time, the gas concentration inside the bunker is monitored to ensure it is less than 0.5%, and energy isolation is confirmed by hanging tags and locking the bunker to ensure operational safety.

[0039] The equipment is then installed by connecting the unspread end of the anchor cable, which serves as the flexible rod 2, to the power output end of the pneumatic drill. The end of the anchor cable away from the pneumatic drill forms the flexible drill bit 3 after it spreads out, and anti-stick grease is applied to the surface of the anchor cable. At the same time, the base of the pneumatic drill is fixed to the platform at the opening with anchor rods, and the reliability of the platform support is checked to ensure the stability of the equipment.

[0040] Next, the rotary stirring and unblocking process is started. First, the blockage point of the coal bunker is located by observation and detection. Then, the end of the anchor cable with the flexible drill bit 3 is inserted into the blockage. After positioning the pneumatic drill, the equipment is started and the anchor cable is driven to rotate at a low speed of 50 rpm. The anchor cable drives the flexible drill bit 3 at the end to rotate synchronously. The flexible drill bit 3 contacts the coal slurry through the spreading structure and cuts and stirs it. Every 1 meter of drilling, it is paused for 10 seconds to promote the initial falling of the loosened coal slurry. If the torque exceeds the limit during the process, the pneumatic coal drill is immediately reversed to avoid the anchor cable getting stuck or breaking.

[0041] If a hardened layer is encountered during the unblocking process, the process enters the layered treatment stage. The speed of the pneumatic drill is increased to 150 rpm. The high-speed rotation enhances the crushing ability of the flexible drill bit 3 on the hard layer. At the same time, the drill is repeatedly lifted 2-3 times so that the flexible drill bit 3 acts on the hardened layer multiple times to completely break the hardened coal slime. Remote monitoring is required during this stage to ensure that personnel are evacuated to a safe area below the coal bunker.

[0042] Finally, in the final acceptance stage, the coal flow in the coal bunker is continuously observed. When the coal flow lasts for more than 5 minutes, the unblocking operation is considered successful. Then, the pneumatic coal drill is shut down, the anchor cable is pulled out of the blocked hole, the anchor cable and flexible drill bit 3 are flushed and maintained, and the coal slag at the work site is cleaned up to complete the entire unblocking operation.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A flexible rotary unblocking device for coal bunkers, characterized in that, include: Rotation drive component (1); A flexible rod (2) is provided. One end of the flexible rod (2) is detachably connected to the power output end of the rotating drive (1). A flexible drill bit (3) is fixedly provided at the other end of the flexible rod (2). The flexible drill bit (3) can rotate with the flexible rod (2) to clean the coal sludge adhering to the coal bunker wall.

2. The flexible rotary unblocking device for coal bunkers according to claim 1, characterized in that, The flexible rod (2) is provided with a guide assembly (4), which is used to adjust the position of the flexible drill bit (3).

3. The flexible rotary unblocking device for coal bunkers according to claim 1, characterized in that, The flexible rod (2) is welded and fixed to the flexible drill bit (3).

4. A flexible rotary unblocking device for coal bunkers according to claim 1, characterized in that, The flexible rod (2) is an anchor cable.

5. A flexible rotary unblocking device for a coal bunker according to claim 1, characterized in that, The flexible rod (2) and the flexible drill bit (3) are an integral structure. The flexible rod (2) is spread out at the end away from the rotating drive (1) to form the flexible drill bit (3).

6. A flexible rotary unblocking device for coal bunkers according to claim 1, characterized in that, The rotating drive component (1) is a pneumatic drill.

7. A flexible rotary unblocking device for a coal bunker according to claim 6, characterized in that, The rotating drive (1) has an air inlet, which is connected to an air duct (5). The air duct (5) is used to transmit compressed air to the rotating drive (1) to make the power output end of the rotating drive (1) rotate.

8. A flexible rotary unblocking device for coal bunkers according to claim 2, characterized in that, The guiding component (4) includes: Sleeve (41), the sleeve (41) is sleeved on the flexible rod (2); An auxiliary rod (42) is provided on the outer wall of the sleeve (41). The auxiliary rod (42) can push and pull the sleeve (41) to adjust the position of the flexible rod (2) through the sleeve (41).

9. A flexible rotary unblocking device for a coal bunker according to claim 1, characterized in that, The flexible drill bit (3) is provided with barbed hooks.

10. A flexible rotary unblocking device for a coal bunker according to claim 1, characterized in that, The rotation drive (1) is provided with a gripping part (6).

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