A material feeding device for coal conveying equipment in thermal power plants

Abstract

This invention relates to the field of material feeding device technology, and discloses a material feeding device for coal conveying equipment in thermal power plants, comprising: a pipe body, a bucket shell disposed at the top of the pipe body, the bucket shell being fixedly connected to the pipe body, and a first guide plate installed on one side of the inner side of the bucket shell; a rotating rod rotatably mounted on the upper inner end of the pipe body, and driving blades circumferentially mounted on the outer side of the rotating rod; a sleeve disposed at the axial center of the pipe body on the bottom side of the rotating rod, an inner rod slidably mounted on the lower inner end of the sleeve, and telescopic spiral blades disposed on the outer sides of the sleeve and the inner rod, with the two ends of the telescopic spiral blades welded and fixed to the bottom of the sleeve and the bottom of the inner rod, respectively. This invention, through the cooperation of a telescopic feeding structure and a linkage mechanism, achieves automated anti-blocking of coal conveying, has strong adaptability, solves the problem of material feeding blockage, ensures continuous and stable coal conveying, and improves the reliability of equipment operation.

Description

Technical Field

[0001] This invention relates to the field of material feeding device technology, specifically a material feeding device for coal conveying equipment in thermal power plants. Background Technology

[0002] In thermal power plant production operations, the coal conveying system is one of the core components to ensure the stable operation of the unit. As a key link in the coal conveying equipment, the material feeding device is mainly used to guide the coal from the upper conveying structure to the lower conveying equipment to realize the continuous transfer of coal. Its operational stability directly affects the efficiency and safety of coal conveying operations in thermal power plants and is widely used in various coal conveying production lines in thermal power plants.

[0003] Existing coal conveying equipment in thermal power plants suffers from numerous problems in practical use, with coal blockage being one of the most prominent. A common solution to this problem is to install fixed spiral blades within the material feeding channel for guiding and conveying. However, the fixed structure of these blades cannot adapt to the conveying requirements of coal with varying flow rates and particle sizes. When coal clumps or the flow rate fluctuates, it easily accumulates and blocks the material in the blade gaps and the material feeding channel. Furthermore, some devices rely on periodic manual cleaning to prevent blockage, which not only increases the workload of operators but also exacerbates blockages if cleaning is not timely, leading to interruptions in coal conveying operations and affecting the reliability of the equipment. In addition, existing anti-blockage structures often require additional power, increasing energy consumption and increasing the risk of power failures, further reducing the operational stability of the material feeding device. Therefore, a new material feeding device for coal conveying equipment in thermal power plants is proposed. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a material unloading device for coal conveying equipment in thermal power plants to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a material feeding device for coal conveying equipment in a thermal power plant, comprising: The pipe body has a bucket shell at its top, which is fixedly connected to the pipe body. A first guide plate is installed obliquely on one side of the inside of the bucket shell. A rotating rod is rotatably mounted on the upper inner end of the tube, and a driving blade is fixedly mounted on the outer side of the rotating rod along the circumferential direction. A sleeve is provided at the bottom side of the rotating rod at the center of the inner axis of the tube body, and the sleeve is fixed to the tube body by a frame. An inner rod is slidably installed at the lower end of the inner sleeve. Telescopic spiral blades are provided on the outside of the sleeve and the inner rod, and the two ends of the telescopic spiral blades are welded and fixed to the bottom of the sleeve and the bottom of the inner rod, respectively. The rotating rod is fixedly mounted with a drive cam at one end outside the tube body. A side frame is welded and fixed to one side of the tube body. A drive rod is vertically slidably mounted inside the side frame. A U-shaped frame is fixed to the top of the drive rod. A roller is vertically rotatably mounted inside the U-shaped frame. The roller is in contact with the drive cam. The drive rod and the side frame are connected by a reset mechanism. A support plate is horizontally fixedly installed at the bottom of the drive rod. A sliding groove is opened on the side wall of the tube body, and the support plate is slidably connected to the sliding groove. A bracket is welded to one end of the support plate inside the tube body, and the bracket is welded and fixed to the bottom side wall of the inner rod. Inside the tube, at the bottom of the telescopic spiral blades, are fixed spiral blades. Through the coordinated operation of the above structures, the impact of falling coal drives the blades to rotate the rotating rod and drive cam, which in turn drives the drive rod to reciprocate, causing the inner rod to extend and retract relative to the sleeve. This causes the telescopic spiral blades to continuously extend and retract, effectively breaking up coal that is prone to agglomeration during the fall. At the same time, the fixed spiral blades and the first guide plate optimize the falling path and flow state of the coal, further enhancing the anti-clogging effect. In addition, the telescopic structure of the spiral blades can adapt to changes in the flow rate and particle size of different coals, improving the adaptability and operational stability of the material feeding device. Overall, the device achieves automated anti-clogging control, ensuring the continuous and efficient operation of coal conveying in thermal power plants and avoiding equipment downtime and reduced operational efficiency caused by coal blockage.

[0006] Preferably, the reset mechanism includes a second elastic reset member and a top ring. The second elastic reset member is disposed at the upper end of the side frame, and the top ring is disposed at the top of the second elastic reset member and is fixedly connected to the drive rod.

[0007] Preferably, a bottom rod is welded to the axis of the fixed helical blade, and an annular cavity is formed on the outside of the bottom rod, with the top of the bottom rod fitting against the bottom of the inner rod.

[0008] Preferably, the annular cavity is provided with a first elastic reset member and a support ring from top to bottom, and the support ring is slidably connected to the annular cavity. The support ring is fixed to the inner wall of the tube body by a frame.

[0009] Preferably, a baffle is provided on the outside of the slide groove on the outside of the pallet, and the baffle is welded and fixed to the pallet, and the inner wall of the baffle is in contact with the outside of the slide groove.

[0010] Preferably, a baffle is provided at the bottom of the tube body, and the baffle is welded and fixed to the tube body.

[0011] Preferably, a second guide plate is provided at the bottom of the pipe body, and the top outer edge of the second guide plate is welded to the bottom outer edge of the pipe body and the baffle.

[0012] Preferably, a rubber flow guide curtain is provided along the inner edge of the opening at the bottom of the tube, and the rubber flow guide curtain is fixed to the tube by bolts.

[0013] Preferably, a dust discharge port is connected to the outer side of the pipe body, and the dust discharge port is welded and fixed to the pipe body, and a flange is provided on the outer edge of the dust discharge port.

[0014] Preferably, the inner wall of the tube body, the end face of the first guide plate, and the end face of the second guide plate are all provided with a wear-resistant rubber lining.

[0015] Compared with the prior art, the present invention provides a material unloading device for coal conveying equipment in thermal power plants, which has the following beneficial effects: 1. This material feeding device for coal conveying equipment in thermal power plants achieves the technical objective of preventing blockage during coal conveying by setting a telescopic feeding structure consisting of a sleeve, inner rod, and telescopic spiral blade inside the pipe body, combined with the linkage of rotating rod, drive blade, drive cam, drive rod, and reset mechanism. It has the advantages of automated anti-blockage and strong adaptability, solves the technical problem of coal blockage in material feeding devices of coal conveying equipment in thermal power plants, ensures the continuous and stable operation of coal conveying, and improves the operational reliability of coal conveying equipment. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of a portion of region A in the middle.

[0017] In the diagram: 1. Pipe body; 2. Hopper shell; 3. First guide plate; 4. Sleeve; 5. Inner rod; 6. Telescopic spiral blade; 7. Bottom rod; 8. Annular cavity; 9. Support ring; 10. First elastic reset component; 11. Fixed spiral blade; 12. Bracket; 13. Support plate; 14. Slide groove; 15. Baffle; 16. Rotating rod; 17. Drive blade; 18. Drive cam; 19. Drive rod; 20. U-shaped frame; 21. Roller; 22. Side frame; 23. Second elastic reset component; 24. Top ring; 25. Baffle shell; 26. Second guide plate; 27. Rubber guide curtain; 28. Dust outlet. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a technical solution: a material feeding device for coal conveying equipment in thermal power plants, comprising: Pipe body 1, top of pipe body 1 is provided with bucket shell 2, bucket shell 2 is fixedly connected to pipe body 1, and a first guide plate 3 is fixedly installed on one side of the inside of bucket shell 2 at an angle; A rotating rod 16 is rotatably mounted on the upper part of the inner side of the tube body 1, and a drive blade 17 is fixedly mounted on the outer side of the rotating rod 16 along the circumferential direction. A sleeve 4 is provided at the bottom side of the rotating rod 16 at the center of the inner shaft of the tube body 1, and the sleeve 4 is fixed to the tube body 1 by a frame. An inner rod 5 is slidably installed at the lower end of the inner shaft of the sleeve 4. Telescopic spiral blades 6 are provided on the outside of the sleeve 4 and the inner rod 5, and the two ends of the telescopic spiral blades 6 are welded and fixed to the bottom of the sleeve 4 and the bottom of the inner rod 5, respectively. A drive cam 18 is fixedly installed on one end of the rotating rod 16 outside the tube body 1. A side frame 22 is welded and fixed on one side of the tube body 1. A drive rod 19 is vertically slidably installed inside the side frame 22. A U-shaped frame 20 is fixed on the top of the drive rod 19. A roller 21 is vertically rotatably installed inside the U-shaped frame 20. The roller 21 is in contact with the drive cam 18. The drive rod 19 and the side frame 22 are connected through a reset mechanism. A support plate 13 is horizontally fixedly installed at the bottom of the drive rod 19. A sliding groove 14 is provided on the side wall of the tube body 1, and the support plate 13 is slidably connected to the sliding groove 14. A bracket 12 is welded to one end of the support plate 13 inside the tube body 1, and the bracket 12 is welded and fixed to the bottom side wall of the inner rod 5. Inside the tube body 1, at the bottom of the telescopic spiral blade 6, there is a fixed spiral blade 11.

[0020] Please see Figure 1 and Figure 2 The reset mechanism includes a second elastic reset member 23 and a top ring 24. The second elastic reset member 23 is disposed at the upper end of the side frame 22, and the top ring 24 is disposed at the top of the second elastic reset member 23. The top ring 24 is fixedly connected to the drive rod 19. The second elastic reset member 23 enables the drive rod 19 to have automatic reset capability.

[0021] Please see Figure 2 and Figure 3 A bottom rod 7 is welded to the shaft of the fixed spiral blade 11. An annular cavity 8 is opened on the outside of the bottom rod 7. The top of the bottom rod 7 fits against the bottom of the inner rod 5. The inner rod 5 reciprocates up and down to strike the bottom rod 7.

[0022] Please see Figure 2 and Figure 3 Inside the annular cavity 8, from top to bottom, there are a first elastic reset member 10 and a support ring 9, and the support ring 9 is slidably connected to the annular cavity 8. The support ring 9 is fixed to the inner wall of the tube body 1 by a frame. The first elastic reset member 10 enables the bottom rod 7 to have automatic reset capability.

[0023] Please see Figure 1 , Figure 2 and Figure 3 A baffle 15 is provided on the outside of the slide 14, and the baffle 15 is welded and fixed to the baffle 13. The inner wall of the baffle 15 is in contact with the outside of the slide 14. The baffle 15 moves up and down with the baffle 13 outside the slide 14, continuously blocking the slide 14 and preventing coal from falling out through the slide 14.

[0024] Please see Figure 1 and Figure 2 A baffle 25 is provided at the bottom of the tube body 1, and the baffle 25 is welded and fixed to the tube body 1.

[0025] Please see Figure 1 and Figure 2 The bottom of the tube body 1 is provided with a second guide plate 26, and the top outer edge of the second guide plate 26 is welded to the bottom outer edge of the tube body 1 and the baffle 25.

[0026] Please see Figure 1 and Figure 2 A rubber guide curtain 27 is provided on the inner edge of the opening at the bottom of the pipe body 1, and the rubber guide curtain 27 is fixed to the pipe body 1 by bolts. The rubber guide curtain 27 plays a buffering role for the coal.

[0027] Please see Figure 1 A dust discharge port 28 is connected to the outer side of the pipe body 1, and the dust discharge port 28 is welded and fixed to the pipe body 1. A flange is provided on the outer edge of the dust discharge port 28 so as to facilitate the connection of dust extraction equipment to discharge the dust generated during the coal conveying process.

[0028] Please see Figure 1 and Figure 2 The inner wall of the pipe body 1, the end face of the first guide plate 3, and the end face of the second guide plate 26 are all provided with wear-resistant rubber linings. The wear-resistant rubber linings serve to protect the inner wall of the pipe body 1, the end face of the first guide plate 3, and the end face of the second guide plate 26.

[0029] This scheme: When coal is transported in a thermal power plant, coal enters through the top of the bucket shell 2. Under the guidance of the first guide plate 3 and the action of gravity, the coal continuously falls onto the drive blade 17 outside the rotating rod 16 and then falls down onto the telescopic spiral blade 6, rolling down along the telescopic spiral blade 6. The drive blade 17 is struck, causing the rotating rod 16 to rotate. The rotating rod 16 drives the drive cam 18 to rotate and push the roller 21, which in turn causes the side frame 22 to drive the drive rod 19 to move downward, thereby pushing the tray 13 and the bracket 12 to push the inner rod 5 downward, causing the telescopic spiral blade 6 to stretch and deform. With the rotation of the drive cam 18 and the reset action of the second elastic reset member 23, the top ring 24 and the drive rod 19 are reset, thereby causing the tray 13 to drive the bracket 12 to lift the inner rod 5, causing the telescopic spiral blade 6 to contract. This process is repeated, causing the telescopic spiral blade 6 to continuously extend and retract, thus preventing the coal from blocking the flow during the fall. Coal leaves the telescopic spiral blade 6 and falls onto the fixed spiral blade 11. The coal rolls down along the fixed spiral blade 11 to the second guide plate 26 and then falls out through the rubber guide curtain 27. During the reciprocating motion of the inner rod 5, the inner rod 5 continuously hits the bottom rod 7, and the bottom rod 7 moves downward. The annular cavity 8 slides up and down inside the support ring 9. Combined with the resetting action of the first elastic reset member 10, the fixed spiral blade 11 is reset. In this way, the anti-blocking effect is further improved. The lifting stroke of the fixed spiral blade 11 is less than the telescopic stroke of the telescopic spiral blade 6.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A material feeding device for coal conveying equipment in a thermal power plant, characterized in that, include: The pipe body (1) has a bucket shell (2) at the top, which is fixedly connected to the pipe body (1). A first guide plate (3) is installed on one side of the inside of the bucket shell (2). A rotating rod (16) is rotatably mounted on the upper inner end of the tube (1), and a driving blade (17) is mounted on the outer side of the rotating rod (16) along the circumferential direction. A sleeve (4) is provided at the inner axis of the tube (1) on the bottom side of the rotating rod (16). An inner rod (5) is slidably installed at the lower end of the sleeve (4). Telescopic spiral blades (6) are provided on the outside of the sleeve (4) and the inner rod (5). The two ends of the telescopic spiral blades (6) are welded and fixed to the bottom of the sleeve (4) and the bottom of the inner rod (5) respectively. The rotating rod (16) is fixedly mounted with a drive cam (18) at one end outside the tube body (1). A side frame (22) is welded and fixed on one side of the tube body (1). A drive rod (19) is slidably mounted inside the side frame (22). A U-shaped frame (20) is fixed on the top of the drive rod (19). A roller (21) is rotatably mounted inside the U-shaped frame (20). The roller (21) is in contact with the drive cam (18). The drive rod (19) is connected to the side frame (22) through a reset mechanism. The bottom of the drive rod (19) is horizontally fixed with a support plate (13), the side wall of the tube body (1) is provided with a sliding groove (14), and the support plate (13) is slidably connected with the sliding groove (14). The support plate (13) is located inside the tube body (1) with a bracket (12) welded to one end, and the bracket (12) is fixed to the bottom side wall of the inner rod (5). The tube body (1) is equipped with a fixed spiral blade (11) located at the bottom of the telescopic spiral blade (6).

2. The material feeding device for coal conveying equipment in a thermal power plant according to claim 1, characterized in that: The reset mechanism includes a second elastic reset member (23) and a top ring (24). The second elastic reset member (23) is disposed at the upper end of the side frame (22), and the top ring (24) is disposed at the top of the second elastic reset member (23). The top ring (24) is fixedly connected to the drive rod (19).

3. A material feeding device for coal conveying equipment in a thermal power plant according to claim 1, characterized in that: A bottom rod (7) is welded to the center of the fixed helical blade (11). An annular cavity (8) is opened on the outside of the bottom rod (7). The top of the bottom rod (7) is in contact with the bottom of the inner rod (5).

4. A material feeding device for coal conveying equipment in a thermal power plant according to claim 3, characterized in that: The annular cavity (8) is provided with a first elastic reset member (10) and a support ring (9) from top to bottom inside the cavity (8), and the support ring (9) is slidably connected to the annular cavity (8). The support ring (9) is fixed to the inner wall of the tube body (1) by a frame.

5. A material feeding device for coal conveying equipment in a thermal power plant according to claim 1, characterized in that: A baffle (15) is provided on the outside of the slide groove (14) of the pallet (13), and the baffle (15) is welded and fixed to the pallet (13). The inner wall of the baffle (15) is in contact with the outside of the slide groove (14).

6. A material feeding device for coal conveying equipment in a thermal power plant according to claim 1, characterized in that: The bottom of the tube (1) is provided with a baffle (25), and the baffle (25) is welded and fixed to the tube (1).

7. A material feeding device for coal conveying equipment in a thermal power plant according to claim 6, characterized in that: The bottom of the tube body (1) is provided with a second guide plate (26), and the top outer edge of the second guide plate (26) is welded to the bottom outer edge of the tube body (1) and the baffle (25).

8. A material feeding device for coal conveying equipment in a thermal power plant according to claim 7, characterized in that: A rubber guide curtain (27) is provided on the inner edge of the opening at the bottom of the tube (1), and the rubber guide curtain (27) is fixed to the tube (1) by bolts.

9. A material feeding device for coal conveying equipment in a thermal power plant according to claim 1, characterized in that: A dust discharge port (28) is connected to the outer side of the pipe body (1), and the dust discharge port (28) is welded and fixed to the pipe body (1). A flange is provided on the outer edge of the dust discharge port (28).

10. A material feeding device for coal conveying equipment in a thermal power plant according to claim 1, characterized in that: The inner wall of the tube body (1), the end face of the first guide plate (3), and the end face of the second guide plate (26) are all provided with wear-resistant rubber lining.

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