Residual powder recycling device of powder bin for power plant

Abstract

The invention belongs to the technical field of power plant environmental protection devices, and discloses a power plant powder bin residual powder recycling device which comprises a smashing box, a rectangular box is fixedly installed on the outer wall of one side of the smashing box, a first screening pipe is rotatably installed in the smashing box, and a second screening pipe is rotatably installed on the inner wall of the first screening pipe. The two ends of the second screening pipe penetrate through the smashing box, and a smashing mechanism and a vibration mechanism are arranged in the rectangular box. The vibration mechanism comprises two second rotating rods rotationally installed in the smashing box, a motor drives a disc and a cylinder to rotate, the cylinder is in sliding connection with an annular block, circular motion is converted into vertical reciprocating motion, a rack is driven to move, the rack is meshed with a gear column to achieve staggered rotation, a round rod and a triangular smashing device are controlled to move, and waste is effectively smashed. And through vibration of the eccentric block, the crushing efficiency is improved, the screening grooves coincide after crushing, waste is discharged, and the eccentric block continuously vibrates to prevent blockage.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental protection devices for power plants, and in particular is a device for recovering and processing excess powder in a powder bin for power plants. Background Art

[0002] The power plant silo residual powder recovery and processing device is an important equipment in the field of coal-fired power generation technology. It is designed to solve the problem of cleaning residual powder in the silo during shutdown or maintenance. The silo is a key component for storing qualified coal powder in the pulverizing system of a coal-fired power plant. The residual powder in the silo is recovered, crushed and screened to improve resource utilization and reduce environmental pollution.

[0003] However, the existing powder silo waste powder recovery and processing devices for power plants still have some shortcomings in technology and performance. On the one hand, these devices may rely only on a single crushing mechanism, resulting in less than ideal crushing effect, and large pieces of waste cannot be fully crushed, which not only affects the efficiency of subsequent screening and recovery, but also easily leads to blockage of the screening trough or the discharge port, further reducing the operating efficiency of the entire processing system. On the other hand, in order to drive these devices, multiple power sources or complex transmission mechanisms may be used, which not only increases the complexity and maintenance costs of the equipment, but also leads to an increase in overall energy consumption. Therefore, it is necessary to develop more efficient, energy-saving and environmentally friendly powder silo waste powder recovery and processing devices for power plants to meet the actual needs of power plants. Summary of the invention

[0004] In order to solve the problems of the existing powder silo surplus powder recovery and processing device for power plants raised in the above background technology, namely, the main shortcomings of the device are unsatisfactory crushing effect and easy clogging, and the use of multiple power sources or complex transmission mechanisms leads to high energy consumption, complex equipment and high maintenance costs. The present invention provides a powder silo surplus powder recovery and processing device for power plants.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a powder bin surplus powder recovery and processing device for a power plant, comprising a crushing box, a rectangular box is fixedly installed on one side outer wall of the crushing box, a screening tube 1 is rotatably installed inside the crushing box, a screening tube 2 is rotatably installed on the inner wall of the screening tube 1, both ends of the screening tube 2 pass through the crushing box, and a crushing mechanism and a vibration mechanism are arranged inside the rectangular box;

[0006] The vibration mechanism includes two rotating rods rotatably installed inside the crushing box, one end of the two rotating rods extends into the rectangular box, two eccentric blocks and a gear are fixedly sleeved on the outer walls of the two rotating rods, the two gears are located inside the rectangular box, four eccentric blocks are located inside the crushing box and two of them are in contact with the bottom of the screening tube 2, two fixed cross blocks are fixedly installed on the outer wall of the crushing box, two racks are arranged inside the rectangular box, and movable grooves are opened on the outer walls of the two racks, and the two fixed cross blocks respectively penetrate the corresponding movable grooves and are slidably connected to the corresponding movable grooves.

[0007] Preferably, a plurality of screening slots are respectively provided at the bottom of the screening tube 1 and the screening tube 2, and the screening slots and the feeding slots on the screening tube 1 are staggered in distribution design with the screening slots and the feeding slots on the screening tube 2.

[0008] Preferably, a motor is fixedly mounted on the inner wall of the rectangular box, a disc is fixedly mounted on the output shaft of the motor, and a cylinder is rotatably mounted on the outer wall of the disc.

[0009] Preferably, an annular block is fixedly mounted on the outer wall of the corresponding rack, and the cylinder is slidably connected to the inner wall of the annular block.

[0010] Preferably, the crushing mechanism comprises a round rod one rotatably mounted inside the second screening tube, a triangular crusher is fixedly mounted on the outer wall of the round rod one, and the outer wall of the triangular crusher is in contact with the inner wall of the second screening tube.

[0011] Preferably, one end of the round rod 1 extends into the rectangular box, and a gear column is fixedly sleeved on the outer wall of the round rod 1, and the gear column is meshed with two racks.

[0012] Preferably, triangular blocks are fixedly mounted on inner walls on both sides of the bottom of the crushing box, and the inclined surfaces of the two triangular blocks correspond to each other.

[0013] Preferably, a feeding channel is fixedly installed on the top of the crushing box, and a discharging channel is fixedly installed on the bottom of the crushing box.

[0014] Preferably, the cross-sectional area of ​​the feed channel is consistent with that of the feed trough, and the discharge channel is connected to the crushing box.

[0015] Preferably, two hydraulic cylinders are fixedly mounted on the inner wall of the rectangular box, and the output shafts of the two hydraulic cylinders are fixedly connected to the outer wall of the second screening tube.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention directly drives the disc and the cylinder on it to rotate together through the rotation of the output shaft of the motor, utilizes the rotational power of the motor, and cleverly converts the continuous circular motion of the disc into the reciprocating motion of the annular block in the vertical direction through the sliding connection between the cylinder and the annular block. The annular block drives the rack connected to it to move together, and the meshing relationship between the rack and the gear column enables the two racks to reciprocate back and forth in opposite directions, thereby realizing precise control of the staggered rotational motion of the gear column in the forward and reverse directions, and also ensuring that the round rod 1 and the triangular crusher can move according to the predetermined trajectory, so as to effectively crush the large pieces of waste in the screening tube 2. The crushing action of the triangular crusher is combined with the vibration crushing mechanism of the eccentric block to form a multiple crushing effect. When the triangular crusher performs a rotating motion, it can have The eccentric block is used to effectively carry out preliminary crushing of large pieces of waste; the eccentric block further vibrates and crushes the waste through its eccentric rotation and continuous contact with the outer wall of the second screening tube, which not only improves the crushing efficiency, but also ensures the uniform crushing of the waste. When the crushing is completed, the screening slots on the first screening tube and the second screening tube overlap, and the finely crushed waste can smoothly pass through the screening slot and fall on the hypotenuse of the triangular block, and be discharged through the discharge channel with the help of the gravity of the waste. At this time, the eccentric block is still constantly vibrating the second screening tube. This intelligent anti-blocking design not only ensures the unobstructed flow of the screening slot, but also prevents the blockage of waste during the screening process. The entire crushing and screening process is realized through a single power source of the motor, without the need for additional energy consumption, so that the entire system can maintain low energy consumption during operation, which meets the requirements of modern industry for energy conservation and environmental protection.

[0018] The present invention allows the overlap and stagger of the two feeding troughs to be controlled by accurately adjusting the position of the second screening tube through the staggered design of the screening trough and the feeding trough. This design ensures that the fertilizer can accurately pass through the feeding channel and the overlapping feeding troughs and smoothly enter the internal space of the second screening tube without worrying about any obstruction or blockage. At the same time, the staggered design of the screening troughs effectively avoids unnecessary screening or loss of fertilizer in the initial screening stage, thereby ensuring the accuracy and efficiency of the screening process. When the two screening troughs overlap, a continuous channel is formed, so that the crushed powder can be discharged smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the side cross-sectional structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the explosion structure of the screening tube 1 and the screening tube 2 of the present invention;

[0023] Figure 5 It is a schematic diagram of the internal structure of the crushing box and the rectangular box of the present invention;

[0024] Figure 6 This is a schematic diagram of the triangular crusher structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the eccentric block structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the fixed cross block, rack and movable groove of the present invention.

[0027] In the figure: 1. crushing box; 101. rectangular box; 102. feeding channel; 103. triangular block; 104. discharging channel; 2. screening tube 1; 3. screening tube 2; 4. screening trough; 5. feeding trough; 6. round rod 1; 7. triangular crusher; 8. gear column; 9. fixed horizontal block; 10. rack; 1001. movable trough; 11. rotating rod 2; 12. gear; 13. eccentric block; 14. motor; 15. disc; 1501. cylinder; 16. ring block; 17. hydraulic cylinder. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figures 1 to 8 As shown, the present invention provides a powder bin surplus powder recovery and processing device for a power plant, comprising a crushing box 1, a rectangular box 101 is fixedly installed on one side outer wall of the crushing box 1, a screening tube 2 is rotatably installed inside the crushing box 1, a screening tube 2 3 is rotatably installed on the inner wall of the screening tube 2, both ends of the screening tube 2 3 pass through the crushing box 1, and a crushing mechanism and a vibration mechanism are arranged inside the rectangular box 101;

[0030] The vibration mechanism includes two rotating rods 11 rotatably installed inside the crushing box 1, one end of the two rotating rods 11 extends into the rectangular box 101, two eccentric blocks 13 and a gear 12 are fixedly sleeved on the outer walls of the two rotating rods 11, the two gears 12 are located inside the rectangular box 101, four eccentric blocks 13 are located inside the crushing box 1 and two of them are in contact with the bottom of the screening tube 3, two fixed horizontal blocks 9 are fixedly installed on the outer wall of the crushing box 1, two racks 10 are arranged inside the rectangular box 101, and movable grooves 1001 are opened on the outer walls of the two racks 10, and the two fixed horizontal blocks 9 respectively penetrate the corresponding movable grooves 1001 and are slidably connected with the corresponding movable grooves 1001.

[0031] The output shaft of the motor 14 rotates to directly drive the disc 15 and the cylinder 1501 thereon to rotate together, utilizing the rotational power of the motor 14 and cleverly converting the continuous circular motion of the disc 15 into the reciprocating motion of the annular block 16 in the vertical direction through the sliding connection between the cylinder 1501 and the annular block 16. The rack 10 connected thereto is driven to move together through the annular block 16. The meshing relationship between the rack 10 and the gear column 8 enables the two racks 10 to reciprocate back and forth in opposite directions, thereby achieving precise control of the staggered rotational motion of the gear column 8 in the forward and reverse directions, and also ensuring that the round rod 1 6 and the triangular crusher 7 can move according to a predetermined trajectory, thereby effectively crushing the large pieces of waste in the screening tube 2 3. The crushing action of the triangular crusher 7 is combined with the vibration crushing mechanism of the eccentric block 13 to form a multiple crushing effect. The triangular crusher 7 is rotating During movement, large pieces of waste can be effectively preliminarily crushed; and the eccentric block 13 further vibrates and crushes the waste through its eccentric rotation and continuous contact with the outer wall of the screening tube 2 3, which not only improves the crushing efficiency, but also ensures the uniform crushing of the waste. When the crushing is completed, the screening slots 4 on the screening tube 1 2 and the screening tube 2 3 overlap, and the finely crushed waste can smoothly pass through the screening slot 4 and fall on the hypotenuse of the triangular block 103, and be discharged through the discharge channel 104 with the help of the gravity of the waste. At this time, the eccentric block 13 is still constantly vibrating the screening tube 2 3. This intelligent anti-blocking design not only ensures the unobstructed flow of the screening slot 4, but also prevents the waste from being blocked during the screening process. The entire crushing and screening process is achieved through a single power source of the motor 14, without the need for additional energy consumption, so that the entire system can maintain low energy consumption during operation, which meets the requirements of modern industry for energy conservation and environmental protection.

[0032] like Figures 2 to 5 As shown, a plurality of screening slots 4 are respectively provided at the bottom of the screening tube 1 2 and the screening tube 2 3 , and the screening slots 4 and the feeding slots 5 on the screening tube 1 2 are staggered in distribution design with the screening slots 4 and the feeding slots 5 on the screening tube 2 3 .

[0033] The staggered design of the screening slots 4 and the feed slots 5 allows the overlap and stagger of the two feed slots 5 to be controlled by precisely adjusting the position of the screening tube 2 3. This design ensures that the fertilizer can accurately pass through the feed channel 102 and the overlapping feed slots 5 and smoothly enter the internal space of the screening tube 2 3 without worrying about any obstruction or blockage. At the same time, the staggered design of the screening slots 4 effectively avoids unnecessary screening or loss of fertilizer in the initial screening stage, thereby ensuring the accuracy and efficiency of the screening process. When the two screening slots 4 overlap, a continuous channel is formed, so that the crushed powder can be discharged smoothly.

[0034] like Figures 6 to 8 As shown, a motor 14 is fixedly mounted on the inner wall of the rectangular box 101, a disc 15 is fixedly mounted on the output shaft of the motor 14, a cylinder 1501 is rotatably mounted on the outer wall of the disc 15, an annular block 16 is fixedly mounted on the outer wall of the corresponding rack 10, and the cylinder 1501 is slidably connected to the inner wall of the annular block 16, and the crushing mechanism includes a round rod 6 rotatably mounted inside the screening tube 2 3, a triangular crusher 7 is fixedly mounted on the outer wall of the round rod 6, and the outer wall of the triangular crusher 7 is in contact with the inner wall of the screening tube 2 3, one end of the round rod 6 extends into the rectangular box 101, and a gear column 8 is fixedly sleeved on the outer wall of the round rod 6, and the gear column 8 is meshed with the two racks 10.

[0035] The meshing of the gear column 8 and the rack 10 realizes efficient transmission of power. When the motor 14 drives the disc 15 and the cylinder 1501 to rotate, the gear column 8 can receive the power from the motor 14 through the connection between the annular block 16 and the rack 10, and convert it into its own rotational motion, which not only ensures the accuracy and stability of power transmission, but also improves the working efficiency of the entire device. Secondly, the meshing relationship between the gear column 8 and the two racks 10 enables them to work together to achieve the crushing of waste in the screening tube 2 3. When the gear column 8 rotates, it drives the rack 10 meshing therewith to perform reciprocating motion, and then drives the round rod 1 6 and the triangular crusher 7 to move up and down, which not only realizes the continuous crushing of waste, but also ensures the uniformity and consistency of the crushing effect.

[0036] like Figure 3 As shown, triangular blocks 103 are fixedly mounted on the inner walls on both sides of the bottom of the crushing box 1, and the inclined surfaces of the two triangular blocks 103 correspond to each other.

[0037] The provision of the triangular block 103 helps to optimize the discharge path of the waste. After the waste is screened and crushed, the fine particles will fall onto the inclined surface of the triangular block 103 through the screening trough 4. Since the inclined surfaces of the two triangular blocks 103 correspond to each other, the waste can be guided along a smoother path to move toward the discharge channel 104, which not only reduces the residence time of the waste in the crushing box 1, but also reduces the risk of waste blockage. Secondly, the design of the triangular block 103 also enhances the structural strength of the crushing box 1 and can share the force at the bottom of the crushing box 1, thereby improving the stability and durability of the entire device.

[0038] like Figures 1 to 3 As shown, a feed channel 102 is fixedly installed on the top of the crushing box 1, and a discharge channel 104 is fixedly installed on the bottom of the crushing box 1. The cross-sectional area of ​​the feed channel 102 is consistent with that of the feed trough 5, and the discharge channel 104 is connected to the crushing box 1.

[0039] The consistency of the cross-sectional area of ​​the feed channel 102 and the feed trough 5 ensures that the fertilizer can enter the screening tube 23 smoothly and unimpeded. This design avoids fertilizer blockage or leakage caused by cross-sectional mismatch, thereby ensuring the continuity and efficiency of the entire processing process. The discharge channel 104 is closely connected with the crushing box 1, so that the waste after screening and crushing can be quickly and directly discharged from the device and enter the subsequent collection or processing process. This design not only improves the waste processing efficiency, but also reduces the residence time of the waste in the device, reducing the potential risks caused by accumulation.

[0040] like Figure 2 As shown, two hydraulic cylinders 17 are fixedly installed on the inner wall of the rectangular box 101 , and the output shafts of the two hydraulic cylinders 17 are fixedly connected to the outer wall of the screening pipe 2 3 .

[0041] The use of the hydraulic cylinder 17 ensures that the screening tube 2 3 can move smoothly and accurately. With its powerful thrust and stable motion control performance, the hydraulic cylinder 17 enables the screening tube 2 3 to slide quickly and accurately to the specified position when needed, whether it is overlapping with the feed trough 5 of the screening tube 1 2 for feeding, or staggered with the screening trough 4 for screening and discharging, it can be easily achieved.

[0042] The working principle and use process of the present invention:

[0043] First, start the two hydraulic cylinders 17. The output shaft ropes of the two hydraulic cylinders 17 drive the screening tube 1 2 to slide in the screening tube 2 3, so that the two feeding slots 5 overlap and the screening slots 4 are staggered. Then, the fertilizer enters the screening tube 2 3 through the feeding channel 102 and the overlapping feeding slots 5. Then start the motor 14. The output shaft rotation of the motor 14 drives the disc 15 to rotate. The disc 15 drives the cylinder 1501 to rotate together. Through the sliding connection between the cylinder 1501 and the annular block 16, the continuous circular motion of the disc 15 is converted into a back and forth reciprocating motion of the annular block 16 in the vertical direction. The rack 10 connected to the annular block 16 moves together. Through the meshing of the rack 10 and the gear column 8, the two racks 10 reciprocate back and forth in opposite directions, so that the gear column 8 performs staggered rotation in the forward and reverse directions. The gear column 8 drives the round rod 1 6 and the triangular The crusher 7 moves together, and the large pieces of waste in the screening tube 2 3 are crushed through the triangular crusher 7. At the same time, through the meshing of the two racks 10 and the gear 12, the two gears 12 rotate together in a staggered manner in the forward and reverse directions. The two gears 12 drive the four eccentric blocks 13 to rotate eccentrically. The eccentric blocks 13 are in continuous contact with the outer wall of the screening tube 2 3, so that the waste in the screening tube 2 3 is vibrated and crushed. When the crushing is completed, the two hydraulic cylinders 17 are started again to stagger the two feeding troughs 5, so that the screening troughs 4 on the screening tube 1 2 and the screening tube 2 3 overlap, so that the finely crushed waste can fall on the hypotenuse of the triangular block 103 through the screening trough 4, and then be discharged through the discharge channel 104 by the gravity of the waste. At the same time, the eccentric block 13 is still constantly vibrating the screening tube 2 3. At this time, the vibration can prevent the waste from clogging the screening trough 4.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for recovering excess powder in a powder bin for a power plant, comprising a crushing box (1), characterized in that: A rectangular box (101) is fixedly mounted on one side outer wall of the crushing box (1), a screening tube 1 (2) is rotatably mounted inside the crushing box (1), a screening tube 2 (3) is rotatably mounted on the inner wall of the screening tube 1 (2), both ends of the screening tube 2 (3) pass through the crushing box (1), and a crushing mechanism and a vibration mechanism are arranged inside the rectangular box (101); The vibration mechanism comprises two rotating rods (11) rotatably mounted inside the crushing box (1), one end of each of the two rotating rods (11) extending into the rectangular box (101), two eccentric blocks (13) and a gear (12) being fixedly sleeved on the outer walls of the two rotating rods (11), the two gears (12) being located inside the rectangular box (101), four eccentric blocks (13) being located inside the crushing box (1) and two of them being in contact with the bottom of the screening tube (3), two fixed horizontal blocks (9) being fixedly mounted on the outer wall of the crushing box (1), two racks (10) being arranged inside the rectangular box (101), movable grooves (1001) being opened on the outer walls of the two racks (10), and the two fixed horizontal blocks (9) respectively passing through the corresponding movable grooves (1001) and being slidably connected with the corresponding movable grooves (1001).

2. The device for recovering excess powder in powder bin for power plant according to claim 1 is characterized by: A plurality of screening grooves (4) are respectively provided at the bottom of the screening tube 1 (2) and the screening tube 2 (3); the screening grooves (4) and the feeding grooves (5) on the screening tube 1 (2) are designed to be staggered in distribution with the screening grooves (4) and the feeding grooves (5) on the screening tube 2 (3).

3. The device for recovering excess powder in powder bin for power plant according to claim 1 is characterized by: A motor (14) is fixedly mounted on the inner wall of the rectangular box (101), a disc (15) is fixedly mounted on the output shaft of the motor (14), and a cylinder (1501) is rotatably mounted on the outer wall of the disc (15).

4. The device for recovering excess powder in powder bin for power plant according to claim 3 is characterized by: An annular block (16) is fixedly mounted on the outer wall of the corresponding rack (10), and the cylinder (1501) is slidably connected to the inner wall of the annular block (16).

5. The device for recovering excess powder in powder bin for power plant according to claim 1 is characterized by: The crushing mechanism comprises a round rod (6) rotatably mounted inside the second screening tube (3), a triangular crusher (7) being fixedly mounted on the outer wall of the round rod (6), and the outer wall of the triangular crusher (7) is in contact with the inner wall of the second screening tube (3).

6. The device for recovering excess powder in powder bin for power plant according to claim 5, characterized in that: One end of the round rod (6) extends into the rectangular box (101), and a gear column (8) is fixedly sleeved on the outer wall of the round rod (6), and the gear column (8) is meshed with two racks (10).

7. The device for recovering excess powder in powder bin for power plant according to claim 1 is characterized by: Triangular blocks (103) are respectively fixedly mounted on the inner walls on both sides of the bottom of the crushing box (1), and the inclined surfaces of the two triangular blocks (103) correspond to each other.

8. The device for recovering excess powder in powder bin for power plant according to claim 1 is characterized by: A material inlet channel (102) is fixedly mounted on the top of the crushing box (1), and a material outlet channel (104) is fixedly mounted on the bottom of the crushing box (1).

9. The device for recovering excess powder in powder bin for power plant according to claim 8, characterized in that: The cross-sectional area of ​​the feed channel (102) is consistent with that of the feed trough (5), and the discharge channel (104) is connected to the crushing box (1).

10. The device for recovering excess powder in powder bin for power plant according to claim 1, characterized in that: Two hydraulic cylinders (17) are fixedly mounted on the inner wall of the rectangular box (101), and the output shafts of the two hydraulic cylinders (17) are fixedly connected to the outer wall of the second screening pipe (3).

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