Coal passing device of coal discharging pipeline

Abstract

The utility model discloses a coal passing device of a coal discharging pipeline. The coal passing device comprises a first sleeve rod, a second sleeve rod, a third sleeve rod, an air supply sleeve, a hot air pipeline and an annular cone frame. A power supply control module is arranged at the other end of the first sleeve rod; a first buckle at one end of the second sleeve rod is combined with the first sleeve rod clamping groove, and a motor is arranged in a second clamping groove at the other end; a second buckle at one end of the third sleeve rod is combined with the second sleeve rod clamping groove, and the other end of the third sleeve rod is rigidly connected with the ring cone frame. The ring cone frame is hollow. An air supply sleeve is arranged outside the third loop bar and is sealed with an annular cone frame, the annular cone frame is provided with an air inlet, and an air outlet is formed in the annular cone frame. A hot air pipeline on the side face of the air supply sleeve is sealed with the air supply sleeve. When the ring cone frame rotates, coal briquettes are stirred. The air supply sleeve is used for drying, and dredging efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of coal transportation technology, and in particular to a coal conveying device for a coal pipeline. Background Technology

[0002] Currently, most thermal power plants use pulverized coal combustion for power generation. Lump coal enters the coal feeder from the raw coal bunker, is then conveyed by the feeder belt, and enters the coal mill through the coal feeder pipe for grinding before combustion. However, due to differences in coal type and moisture content, pulverized coal is highly prone to caking on the inner wall of the coal feeder pipe. Currently, there is a lack of effective solutions; the only option is to shut down the plant in advance when caking is imminent, open the inspection ports of the coal feeder and coal mill, and manually clear the blockage. However, working in confined spaces poses numerous safety hazards, and the efficiency of clearing the blockage is also affected by the confined space, thus reducing the overall efficiency.

[0003] Therefore, how to improve the efficiency of clearing brittle coal dust from coal pipelines is an urgent problem to be solved. Utility Model Content

[0004] This application provides a coal conveying device for a coal pipeline, which solves the problem that the efficiency of manual dredging in the prior art is affected by the limited space, thereby reducing the dredging efficiency and achieving the goal of improving the dredging efficiency.

[0005] In a first aspect, embodiments of this utility model provide a coal conveying device for a coal conveying pipeline, comprising:

[0006] The first sleeve rod, the second sleeve rod, the third sleeve rod, the air supply sleeve, the hot air duct, and the annular cone frame are provided. A first slot is provided on the outer side of one end of the first sleeve rod, and a power control module is provided on the outer side of the other end.

[0007] The second sleeve rod has a first buckle at one end and a second slot at the other end. A motor is provided on the inner side of the end of the second sleeve rod away from the first buckle. The second sleeve rod is connected to the first sleeve rod by the first buckle engaging with the first slot of the first sleeve rod. The power control module is used to control the motor to work. The connection between the first slot and the first buckle is a tenon-and-mortise connection.

[0008] One end of the third sleeve rod is provided with a second buckle, and the other end is rigidly connected to the ring cone frame. The rotating shaft of the motor is rigidly connected to the end of the third sleeve rod provided with the second buckle. The second sleeve rod is connected to the third sleeve rod by engaging with the second buckle and the second slot. The connection method between the second buckle and the second slot is a tenon and mortise type connection.

[0009] The end of the third rod away from the second buckle is rigidly connected to the small end of the annular cone frame, which is a hollow design.

[0010] An air supply sleeve is nested on the outer side of the third sleeve rod. The air supply sleeve is a hollow cylinder. The end of the air supply sleeve near the annular cone frame is sealed to the annular cone frame, and the end away from the annular cone frame is closed. The end of the annular cone frame near the air supply sleeve has an air inlet, which is completely covered by the air supply sleeve. An air outlet is also provided on the inner surface of the annular cone frame. The two ends of the air supply sleeve are rotatably connected to the third sleeve rod and the annular cone frame, respectively.

[0011] A hot air duct is also provided on the side of the air supply sleeve. The hot air duct is sealed to the air supply sleeve and is used to transmit hot air to the air supply sleeve.

[0012] A ventilation pipe is provided on the outside of the annular cone frame, and the ventilation pipe is connected to the air supply sleeve.

[0013] In some possible embodiments, the power control module includes a power switch and a multi-level power indicator light, both of which are electrically connected to the motor.

[0014] In some possible embodiments, the end of the first sleeve rod away from the second sleeve rod is also provided with an anti-slip handle.

[0015] In some possible embodiments, the second sleeve is a replaceable sleeve.

[0016] In some possible embodiments, the hot air temperature output from the hot air duct is 200°C ± 10°C.

[0017] In some possible embodiments, a rotating outer ring is provided at the end of the annular cone frame away from the third sleeve rod, and the rotating outer ring is fixed to the annular cone frame by a snap-fit ​​method.

[0018] In some possible embodiments, the outer surface of the annular cone frame is provided with a threaded structure.

[0019] In some possible embodiments, the thread structure is a left-hand thread structure.

[0020] In some possible embodiments, the anti-slip handle is fixedly connected to the first sleeve rod by a hot-melt process.

[0021] In some possible embodiments, the air supply sleeve has an opening for fixing the access position of the hot air duct and keeping the hot air duct stationary when the third sleeve rod rotates.

[0022] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages:

[0023] This utility model embodiment employs a structure comprising a first sleeve, a second sleeve, a third sleeve, an air supply sleeve, a hot air duct, and a conical frame. The first sleeve has a first slot at one end and a power control module at the other. The second sleeve has a first buckle at one end engaging with the first sleeve slot, and a motor inside the second slot at the other end, controlled by the power control module. The third sleeve has a second buckle at one end engaging with the second sleeve slot, and the other end rigidly connected to the conical frame, with the motor shaft also rigidly connected thereto. The conical frame is hollow. The third sleeve is fitted with an air supply sleeve, which is sealed to the conical frame, with one end closed. The conical frame has an air inlet and an air outlet. The hot air duct on the side of the air supply sleeve is sealed to it for transmitting hot air, effectively solving the problem that manual dredging efficiency is affected by limited space in existing technologies. This allows the conical frame to agitate the caking coal during rotation. The air supply sleeve dries the coal, improving dredging efficiency. Attached Figure Description

[0024] 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 of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a coal feeding device for a coal pipeline provided in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the structure of a coal feeding device ring cone frame for a coal feeding pipeline provided in an embodiment of this application. Detailed Implementation

[0027] 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, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0028] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0029] like Figure 1 As shown, Figure 1 A schematic diagram of a coal feeding device for a coal conveying pipeline provided in this application embodiment includes:

[0030] The first sleeve rod 14, the second sleeve rod 17, the third sleeve rod 23, the air supply sleeve 22, the hot air duct 29, and the annular cone frame 25 are provided. The first sleeve rod 14 has a first slot 16 on the outer side of one end and a power control module on the outer side of the other end.

[0031] In this embodiment, the first sleeve 14, the second sleeve 17, and the third sleeve 23 are made of high-strength stainless steel. This material not only has good corrosion resistance, adapting to the humid and potentially corrosive environment inside the coal conveyor, but also possesses sufficient strength to withstand the torque and pressure generated during dredging operations, ensuring it is not easily deformed during long-term use. The air supply sleeve 22 and the hot air duct 29 are made of a high-temperature resistant rubber and metal composite material. The rubber part ensures good sealing to prevent hot air leakage, while the metal material provides the necessary structural strength to withstand the high temperature and certain pressure of the hot air. The ring cone frame 25 is made of carbon steel and undergoes special surface treatments, such as galvanizing or spraying with anti-corrosion paint, to improve its corrosion resistance and extend its service life.

[0032] The second sleeve rod 17 has a first buckle 15 at one end and a second slot 20 at the other end. A motor 18 is provided on the inner side of the end of the second sleeve rod 17 away from the first buckle 15. The second sleeve rod 17 is connected to the first sleeve rod 14 by engaging with the first slot 16 of the first sleeve rod 14 through the first buckle 15. The power control module is used to control the motor 18 to work. The connection between the first slot 16 and the first buckle 15 is a tenon and mortise connection.

[0033] In this embodiment, the slot and buckle are precision cast to ensure dimensional accuracy is controlled within a very small range, guaranteeing a tight fit during connection without loosening or shaking. The power control module is assembled using high-quality electronic components to ensure accurate and stable control of the motor 18. The motor 18 is selected with appropriate power and speed range according to the actual needs of the device; this application does not impose any restrictions. When installed inside the second sleeve rod 17, shock absorption and protection measures are adopted to prevent coal dust from entering the motor and affecting its performance. The annular cone frame 25 is made into a hollow cone structure through stamping and welding processes, and then the threaded structure 27 is firmly fixed to its outer surface by welding or bolting. The air supply sleeve 22 is made of rolled metal sheet with sealed ends. An interface adapted to the air inlet 24 is reserved at the end near the annular cone frame 25. The interface is finely machined to ensure perfect connection with the air inlet 24 of the annular cone frame 25. The hot air duct 29 is made of metal tubing and has a specially designed sealing interface installed at one end for connecting to the air supply sleeve 22.

[0034] Insert the first latch 15 of the second sleeve rod 17 into the first slot 16 of the first sleeve rod 14, using an interference fit to ensure a tight connection and prevent loosening during use. Similarly, engage the second latch 21 of the third sleeve rod 23 with the second slot 20 of the second sleeve rod 17, and rigidly connect the shaft 19 of the motor 18 to the end of the third sleeve rod 23 equipped with the second latch 21 via a coupling, ensuring stable and efficient power transmission.

[0035] The end of the third rod 23 furthest from the second latch 21 is rigidly connected to the apex of the ring cone frame 25. For example... Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of a coal feeding device ring cone frame for a coal feeding pipeline provided in an embodiment of this application. The ring cone frame 25 is hollow and has a threaded structure 27 on its outer surface.

[0036] The threaded structure 27 is woven from high-strength steel wire. The diameter and gap size of the steel wire need to ensure sufficient strength when mixing coal blocks, while also allowing the coal blocks to pass through the gaps smoothly during the mixing process.

[0037] The outer side of the third sleeve rod 23 is nested with an air supply sleeve 22, which is a hollow cylinder. The end of the air supply sleeve 22 near the annular cone frame 25 is sealed with the annular cone frame 25, and the end away from the annular cone frame 25 is closed. The end of the annular cone frame 25 near the air supply sleeve 22 has an air inlet 24, which is completely covered by the air supply sleeve 22. The inner surface of the annular cone frame 25 is also provided with an air outlet 26.

[0038] The air supply sleeve 22 is nested outside the third sleeve rod 23, so that the end of the air supply sleeve 22 near the annular cone frame 25 is tightly fitted to the annular cone frame 25. A sealing ring is used for sealing to ensure that hot air does not leak. The interface on the side of the hot air duct 29 and the air supply sleeve 22 is connected through a sealing joint. The sealing quality is strictly controlled during the connection process to prevent hot air leakage.

[0039] A hot air duct 29 is also provided on the side of the air supply sleeve 22. The hot air duct 29 is sealed to the air supply sleeve 22 and is used to transmit hot air to the air supply sleeve 22.

[0040] When signs of blockage are detected in the coal feeder pipe, select a sleeve of appropriate length for assembly based on the length of the coal feeder pipe and the location of the blockage. Connect the hot air pipe 29 of the coal feeder to the main hot air pipe of the plant area, ensuring a secure and well-sealed connection during the connection process to prevent hot air leakage.

[0041] The assembled coal feeding device is slowly inserted into the coal feeding pipe, bringing the annular cone frame 25 close to the blockage. The motor 18 is started via the power control module, and an appropriate speed setting is selected based on the degree of blockage. Simultaneously, the valve on the hot air duct 29 is opened, allowing hot air to enter the air supply sleeve 22 and be blown out from the air outlet 26 of the annular cone frame 25. As the annular cone frame 25 rotates, the threaded structure 27 stirs the caking coal, and the hot air dries the coal, causing it to gradually loosen and fall off.

[0042] This embodiment of the application significantly improves dredging efficiency through the coordinated operation of mechanical stirring and hot air drying. The threaded structure 27 on the outer surface of the annular cone frame 25 rotates under the drive of the third sleeve rod 23, effectively stirring the caking coal blocks and loosening them. Simultaneously, hot air delivered by the hot air duct 29 enters the annular cone frame 25 through the air supply sleeve 22 and is blown out from the air outlet 26, drying the caking coal blocks, reducing their stickiness, and further promoting their loosening and falling off. This quickly dredges the coal conveying pipe and reduces equipment downtime caused by pipe blockage.

[0043] The sleeves are connected by a tight fit of slots and buckles. For example, the first sleeve 14 and the second sleeve 17 are connected by a mortise and tenon joint using the first slot 16 and the first buckle 15, and the second sleeve 17 and the third sleeve 23 are connected by a mortise and tenon joint using the second slot 20 and the second buckle 21. This connection method ensures the stability of the device during operation. The motor 18 shaft 19 is rigidly connected to the third sleeve 23, and the third sleeve 23 is rigidly connected to the annular cone frame 25, which ensures stable power transmission and makes the stirring action of the threaded structure 27 smooth and powerful, without shaking or disengagement, thus ensuring the reliable operation of the device.

[0044] In some embodiments, the power control module includes a power switch 12 and a multi-level power indicator light 13.

[0045] Specifically, the multi-level power indicator 13 uses high-brightness, low-power LED beads. According to design requirements, the power switch 12 and the multi-level power indicator 13 are integrated onto the circuit board of the power control module. The circuit board is then installed in the reserved position on the first set of rods 14, and fixed and wired to ensure that the power switch 12 can control the start and stop of the motor 18, and that the multi-level power indicator 13 can accurately display the current power level. Specifically, the power control module has three power levels, which are switched sequentially by repeatedly triggering the power switch 12, and the current level status is displayed in real time via the multi-level power indicator 13.

[0046] In this embodiment, the multi-level power indicator light 13 can display the current power level of the device in real time. Operators can intuitively understand the working status of the device without additional testing equipment, and adjust the power level in a timely manner according to the actual blockage situation to improve work efficiency.

[0047] By displaying different power levels with indicator lights, operator error can be prevented, and damage to the device due to excessive power or ineffective unblocking due to insufficient power can be avoided. This extends the service life of the device and reduces the equipment failure rate.

[0048] In some embodiments, the end of the first sleeve 14 away from the second sleeve 17 is also provided with an anti-slip handle 11.

[0049] Specifically, the anti-slip handle 11 is made of rubber or silicone material with good anti-slip properties, and its surface is designed with anti-slip textures, such as raised particles or grooves. The anti-slip handle 11 is fixedly connected to the first sleeve rod 14 through a hot-melt process to ensure a firm and seamless connection.

[0050] The embodiments of this application provide better grip through the anti-slip handle 11, especially in wet or sweaty conditions, which can effectively prevent the device from slipping, making the operator more stable and safe during operation and reducing safety accidents caused by device malfunction.

[0051] In some embodiments, the second sleeve 17 is a replaceable sleeve.

[0052] Specifically, the two ends of the second sleeve rod 17 are designed with standardized slots and buckles to match the connection points of the first sleeve rod 14 and the third sleeve rod 23. During the manufacturing process, the dimensional accuracy and surface quality of the slots and buckles are strictly controlled to ensure the tightness and reliability of the connection.

[0053] When the second sleeve rod 17 is damaged or needs to be replaced with a different specification of the second sleeve rod 17 according to different unblocking needs, the operator only needs to separate the slots and buckles between the second sleeve rod 17 and the first sleeve rod 14 and the third sleeve rod 23 to easily remove the old second sleeve rod 17, and then connect the new second sleeve rod 17 in the correct direction and manner to ensure a firm connection.

[0054] The embodiments of this application may require second rods 17 of different lengths, materials, or structures depending on the different blockage situations in the coal conveyor and the working environment. The replaceable design allows the device to quickly replace the appropriate second rod 17 according to actual needs, improving the adaptability of the device to various working conditions.

[0055] When the second sleeve rod 17 is damaged or worn, only the second sleeve rod 17 needs to be replaced, instead of replacing the entire device, which greatly reduces the maintenance cost and repair time of the equipment and improves the economic efficiency of the device.

[0056] In some embodiments, the temperature of the hot air output from the hot air duct 29 is 200℃±10℃.

[0057] Specifically, the hot air duct 29 of the device is connected to the main hot air duct of the plant using a high-temperature resistant, corrosion-resistant, and well-sealed pipe. Special high-temperature resistant sealing joints, such as metal bellows sealing joints, are used at the connection points to ensure a secure connection and no hot air leakage. This maintains the hot air output from the hot air duct 29 at 200℃±10℃.

[0058] This embodiment of the application utilizes hot air within this temperature range to quickly and effectively reduce the moisture content of caking coal lumps, decreasing their stickiness and making them easier to loosen and disperse by the threaded structure 27, thus improving unblocking efficiency. Simultaneously, this temperature is not excessively high, preventing coal combustion and ensuring operational safety.

[0059] A moderate hot air temperature can prevent damage to other components of the device, such as the air supply sleeve 22 and the motor 18, due to excessive temperature, thus extending the service life of the device and reducing the frequency of maintenance and replacement of parts.

[0060] In some embodiments, a rotating outer ring 28 is provided at one end of the annular cone frame 25 away from the third sleeve rod 23. The rotating outer ring 28 is a replaceable rotating outer ring 28, which is fixed to the annular cone frame 25 by a snap-fit ​​method.

[0061] Specifically, the rotating outer ring 28 is made of wear-resistant, high-strength material, and its inner diameter matches the outer diameter of the ring cone frame 25. The snap-fit ​​part is designed with a concave-convex fit structure. When installing the rotating outer ring 28, align it with the snap-fit ​​position on the ring cone frame 25, apply a certain pressure to make it snap-fit, and ensure that the rotating outer ring 28 can rotate with the ring cone frame 25 and will not easily fall off.

[0062] When the outer rotating ring 28 becomes worn or damaged, the operator can use appropriate tools, such as a pry bar or wrench, to remove the outer rotating ring 28 from the ring cone frame 25 and then replace it with a new one. The replacement process is simple and quick and does not affect the normal use of the device.

[0063] In this embodiment, the rotating outer ring 28 further agitates and breaks up the hardened coal lumps during rotation, expanding the unblocking range and improving the unblocking effect. Especially for some stubborn blockages, rotating the outer ring 28 can provide additional force, making it easier for the blockage coal lumps to dislodge.

[0064] The replaceable rotating outer ring 28 design allows operators to easily and quickly replace it when it is worn or damaged, without the need for complicated tools or operations, reducing equipment downtime and improving work efficiency.

[0065] In some embodiments, the thread structure 27 is a left-hand thread structure.

[0066] Specifically, the threaded structure is manufactured according to the design requirements of a left-hand thread, using high-strength steel wire or strip for weaving or welding to ensure that the threaded structure 27 has sufficient strength and wear resistance. The left-hand threaded structure is fixed to the outer surface of the ring cone frame 25 by welding or bolting, ensuring that the direction and spacing of the threads conform to the design standards.

[0067] When the annular cone frame 25 rotates, the left-hand spiral structure can stir the caking coal in a specific way. Compared with the ordinary spiral structure, it is more conducive to loosening and clearing the coal and improving the clearing efficiency.

[0068] The embodiments of this application utilize a left-hand spiral structure that can stir coal blocks in a unique way during rotation. Compared to ordinary spiral structures, this may be more effective in separating coal blocks from the inner wall of the coal delivery pipe, allowing the coal blocks to form a specific flow direction during stirring, thus achieving more efficient unblocking.

[0069] The left-hand spiral structure design can reduce the accumulation and entanglement of coal on the spiral structure 27, reduce the risk of the device being blocked, and ensure the continuous and stable operation of the device.

[0070] In some embodiments, the power control module has three power levels, which are switched sequentially by triggering the power switch 12 multiple times, and the current power level status is displayed in real time by the multi-level power indicator light 13.

[0071] Specifically, when using the device, the power level is switched by pressing the power switch 12. The first press of the power switch 12 starts the device and puts it in the first power level, with the multi-level power indicator 13 displaying the corresponding level. Pressing the power switch 12 again switches to the second power level, and the indicator light updates accordingly. Pressing the power switch 12 a third time switches to the third power level. If the power switch 12 is pressed again, the device stops working.

[0072] This application embodiment uses three power levels to meet the needs of coal conveying pipe blockage of different degrees. For minor blockage, a low power level can be selected to save energy; for severe blockage, a high power level can be switched to enhance stirring and unblocking capabilities.

[0073] The method of switching gears by repeatedly triggering the power switch 12 is simple and easy to understand, allowing operators to easily adjust the power gear without complicated procedures. Meanwhile, the multi-gear power indicator 13 displays the gear status in real time, preventing accidental operation and improving operational accuracy and efficiency.

[0074] In some embodiments, the anti-slip handle 11 and the first sleeve rod 14 are fixedly connected by a hot-melt process.

[0075] Specifically, hot melt adhesive is applied to the connection points of the first sleeve rod 14 and the anti-slip handle 11. Then, the anti-slip handle 11 is aligned with its mounting position on the first sleeve rod 14, and pressure is applied while heating to melt the hot melt adhesive and fill the gaps in the connection. During the heating process, temperature and time must be carefully controlled to avoid overheating that could cause material deformation or damage. After heating, pressure is maintained until the hot melt adhesive cools and solidifies, ensuring a secure connection between the anti-slip handle 11 and the first sleeve rod 14.

[0076] After the connection is completed, the connection between the anti-slip handle 11 and the first sleeve rod 14 is inspected for quality, such as by conducting a tensile test to check whether the connection is firm and whether it can withstand the tensile force and torque during normal use.

[0077] In this embodiment, the anti-slip handle 11 and the first sleeve rod 14 are tightly connected by a hot-melt process, resulting in high connection strength. This connection can withstand large tensile and torque forces and will not loosen or fall off during long-term use, thus ensuring the normal function of the anti-slip handle 11.

[0078] The sealing effect formed by the hot-melt connection can prevent dust, coal dust and other debris from entering the connection part, avoid the impact of debris accumulation on the stability of the connection and the performance of the anti-slip handle 11, and extend the service life of the anti-slip handle 11 and the device.

[0079] In some embodiments, the air supply sleeve 22 is provided with an opening for fixing the access position of the hot air duct 29 and keeping the hot air duct 29 stationary when the third sleeve rod 23 rotates.

[0080] Specifically, an opening of appropriate size and shape is made on the side of the air supply sleeve 22. The size and position of the opening must be precisely designed according to the outer diameter of the hot air duct 29 and the connection method. The edges of the opening are smoothed to avoid scratching the hot air duct 29.

[0081] The hot air duct 29 is inserted into the opening of the air supply sleeve 22. Sealing and fixing measures, such as using sealing rings and clamps, are employed to ensure a good seal between the hot air duct 29 and the opening, preventing hot air leakage. At the same time, a fixing structure keeps the hot air duct 29 stationary when the third sleeve rod 23 rotates, avoiding any impact on the normal operation of the device due to the rotation of the hot air duct 29.

[0082] In this embodiment, the opening secures the hot air duct 29, ensuring the stability of the connection between the hot air duct 29 and the air supply sleeve 22. This prevents the hot air duct 29 from shaking or shifting during device operation, ensuring that the hot air can be stably and smoothly transmitted into the annular cone frame 25, thus improving the utilization efficiency of the hot air.

[0083] The hot air duct 29 remains stationary while the third rod 23 rotates, which avoids the hot air duct 29 from being subjected to twisting, pulling and other forces due to rotation, reduces wear and damage to the hot air duct 29, extends the service life of the hot air duct 29, and reduces maintenance costs.

[0084] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0085] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A coal feeding device for a coal conveying pipeline, characterized in that, include: The first sleeve (14), the second sleeve (17), the third sleeve (23), the air supply sleeve (22), the hot air duct (29), and the annular cone frame (25) are provided. The first sleeve (14) has a first slot (16) on the outer side of one end and a power control module on the outer side of the other end. The second sleeve rod (17) has a first buckle (15) at one end and a second slot (20) at the other end. A motor (18) is provided on the inner side of the end of the second sleeve rod (17) away from the first buckle (15). The second sleeve rod (17) is connected to the first slot (16) of the first sleeve rod (14) through the first buckle (15). The power control module is used to control the motor (18) to work. The connection between the first slot (16) and the first buckle (15) is a tenon-and-mortise connection. One end of the third sleeve rod (23) is provided with a second buckle (21), and the other end is rigidly connected to the ring cone frame (25). The rotating shaft (19) of the motor (18) is rigidly connected to the end of the third sleeve rod (23) provided with the second buckle (21). The second sleeve rod (17) is connected to the second slot (20) through the second buckle (21), so that the second sleeve rod (17) is connected to the third sleeve rod (23). The connection method of the second buckle (21) and the second slot (20) is a tenon and mortise connection. The end of the third sleeve rod (23) away from the second buckle (21) is rigidly connected to the small end of the ring cone frame (25), which is hollow; An air supply sleeve (22) is nested on the outside of the third sleeve rod (23). The air supply sleeve (22) is a hollow cylinder. The end of the air supply sleeve (22) near the annular cone frame (25) is sealed with the annular cone frame (25), and the end away from the annular cone frame (25) is closed. The annular cone frame (25) has an air inlet (24) at the end near the air supply sleeve (22). The air supply sleeve (22) completely covers the air inlet (24). An air outlet (26) is also provided on the inner surface of the annular cone frame (25). The two ends of the air supply sleeve (22) are rotatably connected to the third sleeve rod (23) and the annular cone frame (25) respectively. A hot air duct (29) is also provided on the side of the air supply sleeve (22). The hot air duct (29) is sealed to the air supply sleeve (22) and is used to transmit hot air to the air supply sleeve (22). A ventilation pipe is provided on the outside of the annular cone frame (25), and the ventilation pipe is connected to the air supply sleeve (22).

2. The coal feeding device for the coal feeder pipeline according to claim 1, characterized in that, The power control module includes a power switch (12) and a multi-level power indicator (13), both of which are electrically connected to the motor.

3. The coal feeding device for the coal feeder pipeline according to claim 1, characterized in that, The end of the first sleeve rod (14) away from the second sleeve rod (17) is also provided with an anti-slip handle (11).

4. The coal feeding device for the coal feeder pipeline according to claim 3, characterized in that, The second sleeve (17) is a replaceable sleeve.

5. The coal feeding device for the coal feeder pipeline according to claim 1, characterized in that, The hot air temperature output from the hot air duct (29) is 200℃±10℃.

6. The coal feeding device for the coal feeder pipeline according to claim 1, characterized in that, The end of the annular cone frame (25) away from the third sleeve rod (23) is also provided with a rotating outer ring (28), which is fixed to the annular cone frame (25) by a snap-fit ​​method.

7. The coal feeding device for the coal feeder pipeline according to claim 1, characterized in that, The outer surface of the annular cone frame (25) is provided with a threaded structure (27).

8. The coal feeding device for the coal feeder pipeline according to claim 7, characterized in that, The thread structure (27) is a left-hand thread structure.

9. The coal feeding device for the coal feeder pipeline according to claim 3, characterized in that, The anti-slip handle (11) and the first sleeve rod (14) are fixedly connected by a hot-melt process.

10. The coal feeding device for the coal feeder pipeline according to claim 1, characterized in that, The air supply sleeve (22) has an opening for fixing the access position of the hot air duct (29) and keeping the hot air duct (29) stationary when the third sleeve rod (23) rotates.

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