Method for detecting ash clogging and removing clogging by using gravity

The design of the ash filter rack and stirring rod solves the problem of evaporator ash hopper blockage, realizing automatic detection and rapid unblocking of blockages, reducing equipment downtime and environmental pollution.

CN121044366APending Publication Date: 2025-12-02HUADIAN POWER INTERNATIONAL CORPORATION LTD
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Patent Information

Application Number
CN202511170162.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-20
Publication Date
2025-12-02

AI Technical Summary

Technical Problem

The ash accumulating plates in the evaporator ash hopper form ash blocks, which can clog the ash hopper discharge port or the silo pump, requiring frequent shutdowns for cleaning, resulting in equipment damage and environmental pollution.

Method used

A gravity-based detection and unblocking method is designed. By using a filter frame, a left stirring rod, and a right stirring rod in combination, blockage in the ash hopper is detected, and large ash blocks are broken down into smaller ash blocks to clear the blockage.

Benefits of technology

It effectively prevents large ash blocks from entering the feed pipe, reduces equipment downtime, avoids equipment damage and environmental pollution, and improves equipment operational stability.

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Abstract

The invention discloses a method for detecting ash clogging and removing clogging by using gravity. Ash blocks formed by an ash deposition plate in an evaporator ash hopper fall off to block an ash hopper discharging port or a bin pump, equipment operation needs to be stopped irregularly, a manhole door needs to be opened, and the bin pump needs to be disassembled for cleaning, so that the environment is easily polluted due to ash leakage. The method comprises the following steps that an inserting rod is pulled out, the left hand holds a left square sleeve of a left stirring rod, the right side holds a right square sleeve of a right stirring rod, the left stirring rod is rotated clockwise, and the right stirring rod is rotated anticlockwise, so that the left stirring rod and the right stirring rod can stir extruded ash blocks to beat the ash blocks into small ash blocks; small ash blocks formed by beating can smoothly enter the blanking pipe through the ash filtering frame, so that the blockage is dredged, and the whole height is increased to the initial position under the action of the spring after dredging is completed. The device is used for detecting and cleaning the accumulated dust blockage of the dust hopper.
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Description

Technical Field

[0001] This invention relates to a method for detecting and clearing ash blockage using gravity. Background Technology

[0002] Ash clumps accumulate in the evaporator ash hopper, clogging the ash hopper discharge port or the silo pump. This necessitates periodic shutdowns of the equipment to open the manhole and disassemble the silo pump for cleaning, which can easily lead to ash leakage and environmental pollution. Frequent disassembly of equipment pipelines can also damage equipment seals. This occurs an average of 2-3 times per month. Summary of the Invention

[0003] The purpose of this invention is to provide a method for detecting and clearing ash blockage using gravity, so as to solve the above-mentioned technical problems.

[0004] The above objectives are achieved through the following technical solutions: A method for detecting and clearing ash blockage using gravity, the method comprising the following steps: (1) The part of the connecting block located on the outside has a connecting plate. The insert rod passes through the round hole of the connecting plate, the round hole of the left longitudinal rod and the round hole of the right longitudinal rod to limit the left stirring rod and the right stirring rod and prevent them from rotating on their own. (2) During normal ash discharge, the dust will fall into the discharge pipe after passing through the ash filter frame. When the large ash block is blocked on the ash filter frame and gradually blocks the ash hopper, the overall height of the ash filter frame will drop after being pressed by the ash block, causing its spring to compress. In this way, external personnel can see that the height of the block has dropped, and they can know that the ash hopper is blocked. (3) Then pull out the plug rod, hold the left sleeve of the left stirring rod with your left hand and the right sleeve of the right stirring rod with your right hand, rotate the left stirring rod clockwise and the right stirring rod counterclockwise. In this way, the left and right stirring rods can stir the compressed ash blocks and break them into small ash blocks. The broken ash blocks can pass smoothly through the ash filter frame and enter the discharge pipe to clear the blockage. After clearing, the overall height rises to the initial position under the action of the spring.

[0005] The method for detecting and clearing ash blockage using gravity includes a filter frame, a left stirring rod, and a right stirring rod. The filter frame is fixed at both ends to a connecting block, the connecting block is located inside a tube, and a spring connects the bottom of the connecting block to the tube. The left stirring rod is located on one side of the filter frame, and its end passes through the connecting block and is rotatably connected to the connecting block. The right stirring rod is located on the other side of the filter frame, and its end passes through the connecting block and is rotatably connected to the connecting block.

[0006] In the aforementioned method for detecting and clearing ash blockage using gravity, a rubber telescopic sleeve connects the connecting block and the insert cylinder.

[0007] The method for detecting and clearing blockages using gravity includes two vertically arranged fixing rods fixed inside the insert, which pass through the circular holes of the connecting block.

[0008] The method for detecting and clearing ash blockage using gravity includes a left stirring rod comprising a left longitudinal rod, on which multiple left transverse rods are fixed, and at each end of the left longitudinal rod are a left retaining ring and a left square sleeve, respectively.

[0009] The method for detecting and clearing ash blockage using gravity includes a right stirring rod comprising a right longitudinal rod, on which multiple right horizontal rods are fixed, and at each end of the right longitudinal rod are a right retaining ring and a right square sleeve, respectively. Beneficial effects

[0010] 1. This invention can effectively filter the dust passing through the ash hopper by setting up a filter frame, which can prevent large ash blocks from entering the discharge pipe and clogging the hopper pump.

[0011] 2. By setting up left and right stirring rods, when large ash blocks are blocked on the ash filter frame and gradually clog the ash hopper, the overall height of the ash filter frame will decrease due to the pressure of the ash blocks, causing its springs to compress. This clearly shows that the ash hopper is clogged. Then, driving the left and right stirring rods can stir the large ash blocks, breaking them into smaller ash blocks, allowing them to pass through the ash filter frame and clearing the blockage. Attached Figure Description

[0012] Figure 1 This is a top view of the present invention; Figure 2 This is the front view of the present invention; Figure 3 for Figure 1 Enlarged view of part AA; Figure 4 for Figure 2 Enlarged view of the BB section; Figure 5 for Figure 2 Enlarged view of part C; Figure 6 for Figure 4 Enlarged view of part D; Figure 7 This is a schematic diagram of the filter frame structure; Figure 8 This is a schematic diagram of the left stirring rod; Figure 9 This is a schematic diagram of the right stirring rod; Figure 10 This is a schematic diagram of the structure during the unblocking process; The components are: 1. Rubber telescopic sleeve; 2. Left stirring rod; 3. Ash hopper; 4. Ash filter frame; 5. Right stirring rod; 6. Insert cylinder; 7. Insert rod; 8. Connecting plate; 9. Connecting block; 10. Fixing rod; 11. Spring; 12. Left square sleeve; 13. Left retaining ring; 14. End rod; 15. Serpentine rod; 16. Left horizontal bar; 17. Left vertical bar; 18. Right horizontal bar; 19. Right vertical bar; 20. Ash block; 21. Right retaining ring; 22. Right square sleeve; 23. Material discharge pipe. Detailed Implementation

[0013] Reference Figures 1-9 A method for detecting and clearing ash blockage using gravity, the method comprising the following steps: (1) The part of the connecting block located on the outside has a connecting plate. The insert rod passes through the round hole of the connecting plate, the round hole of the left longitudinal rod and the round hole of the right longitudinal rod to limit the left stirring rod and the right stirring rod and prevent them from rotating on their own. (2) During normal ash discharge, the dust will fall into the discharge pipe after passing through the ash filter frame. When the large ash block is blocked on the ash filter frame and gradually blocks the ash hopper, the overall height of the ash filter frame will drop after being pressed by the ash block, causing its spring to compress. In this way, external personnel can see that the height of the block has dropped, and they can know that the ash hopper is blocked. (3) Then pull out the plug rod, hold the left sleeve of the left stirring rod with your left hand and the right sleeve of the right stirring rod with your right hand, rotate the left stirring rod clockwise and the right stirring rod counterclockwise. In this way, the left and right stirring rods can stir the compressed ash blocks and break them into small ash blocks. The broken ash blocks can pass smoothly through the ash filter frame and enter the discharge pipe to clear the blockage. After clearing, the overall height rises to the initial position under the action of the spring.

[0014] A method for detecting and clearing ash blockage using gravity includes a filter frame 4, a left stirring rod 2, and a right stirring rod 5. The filter frame is fixed at both ends to a connecting block 9. The filter frame includes a serpentine rod 15, with end rods 14 welded to both ends. During installation, the end rods are inserted into the slots of the connecting block and welded in place to fix the connecting block to the filter frame. The connecting block is located inside an insert 6, and a spring 11 connects the bottom of the connecting block to the insert 6. The insert 6 is a square ring cylinder. The left stirring rod is located on one side of the filter frame, and its end passes through the connecting block and is rotatably connected to the connecting block. The right stirring rod is located on the other side of the filter frame, and its end passes through the connecting block and is rotatably connected to the connecting block.

[0015] When in use, the ash hopper 3 has openings on two opposite sides, and inserts are welded to the openings. The two connecting blocks are located in the inserts on the corresponding sides. During normal ash discharge, the dust will fall into the discharge pipe after passing through the filter ash frame. When large ash blocks are blocked on the filter ash frame and gradually clog the ash hopper, the overall height of the filter ash frame will drop after being compressed by the ash blocks, causing its spring to compress. This clearly shows that the ash hopper is clogged. Then, rotating the left and right stirring rods can stir the large ash blocks, breaking them into smaller ash blocks, allowing them to pass through the filter ash frame and clearing the blockage.

[0016] The method for detecting and clearing ash blockage using gravity involves a rubber telescopic sleeve 1 connecting the connecting block and the insert cylinder. This rubber telescopic sleeve is used to ensure a seal between the connecting block and the insert cylinder to prevent ash leakage.

[0017] The method for detecting and clearing ash blockage using gravity includes two vertically arranged fixing rods 10 fixed inside the insert. The fixing rods pass through the circular holes of the connecting block, and these fixing rods are used to ensure that the connecting block moves vertically downward after being pressed down by the ash block.

[0018] The method for detecting and clearing ash blockage using gravity includes a left stirring rod 17, on which multiple left horizontal rods 16 are fixed. A left retaining ring 13 and a left square sleeve 12 are fixed at both ends of the left vertical rod.

[0019] The method for detecting and clearing ash blockage using gravity includes a right stirring rod comprising a right longitudinal rod 19, on which multiple right transverse rods 18 are fixed. A right retaining ring 21 and a right square sleeve 22 are respectively fixed at both ends of the right longitudinal rod.

[0020] Working principle: Refer to Figure 10 The connecting block has a connecting plate 8 on its external part. The insert rod 7 passes through the round holes of the connecting plate, the left longitudinal rod, and the right longitudinal rod. This can limit the left and right stirring rods and prevent them from rotating on their own. During normal ash discharge, the dust will fall into the discharge pipe after passing through the ash filter frame. When large ash blocks are blocked on the ash filter frame and gradually clog the ash hopper, the overall height of the ash filter frame will drop due to the pressure of the ash blocks, causing its spring to compress. This allows external personnel to see that the height of the connecting block has dropped, indicating that the ash hopper is clogged. Then, the insert rod is pulled out, the left sleeve of the left stirring rod is held with the left hand, and the right sleeve of the right stirring rod is held with the right hand. The left stirring rod is rotated clockwise, and the right stirring rod is rotated counterclockwise. This allows the left and right stirring rods to agitate the compressed ash blocks and break them into smaller ash blocks. The broken ash blocks can then pass smoothly through the ash filter frame and enter the discharge pipe, clearing the blockage. After clearing, the overall height rises back to the initial position under the action of the spring.

Claims

1. A method for detecting and clearing ash blockage using gravity, characterized in that: The method includes the following steps: (1) The part of the connecting block located on the outside has a connecting plate. The insert rod passes through the round hole of the connecting plate, the round hole of the left longitudinal rod and the round hole of the right longitudinal rod to limit the left stirring rod and the right stirring rod and prevent them from rotating on their own. (2) During normal ash discharge, the dust will fall into the discharge pipe after passing through the ash filter frame. When the large ash block is blocked on the ash filter frame and gradually blocks the ash hopper, the overall height of the ash filter frame will drop after being pressed by the ash block, causing its spring to compress. In this way, external personnel can see that the height of the block has dropped, and they can know that the ash hopper is blocked. (3) Then pull out the plug rod, hold the left sleeve of the left stirring rod with your left hand and the right sleeve of the right stirring rod with your right hand, rotate the left stirring rod clockwise and the right stirring rod counterclockwise. In this way, the left and right stirring rods can stir the compressed ash blocks and break them into small ash blocks. The broken ash blocks can pass smoothly through the ash filter frame and enter the discharge pipe to clear the blockage. After clearing, the overall height rises to the initial position under the action of the spring.

2. The method for detecting and clearing ash blockage using gravity according to claim 1, characterized in that: Its components include a filter frame, a left stirring rod and a right stirring rod. The filter frame is fixed at both ends to a connecting block. The connecting block is located inside the insert and a spring is connected between the bottom of the connecting block and the insert. The left stirring rod is located on one side of the filter frame, and its end passes through the connecting block and is rotatably connected to the connecting block. The right stirring rod is located on the other side of the filter frame, and its end passes through the connecting block and is rotatably connected to the connecting block.

3. The method for detecting and clearing ash blockage using gravity according to claim 2, characterized in that: A rubber telescopic sleeve connects the connecting block and the insert.

4. The method for detecting and clearing ash blockage using gravity according to claim 3, characterized in that: The insert has two vertically arranged fixing rods fixed inside, and the fixing rods pass through the round holes of the connecting block.

5. The method for detecting and clearing ash blockage using gravity according to claim 4, characterized in that: The left stirring rod includes a left longitudinal rod, on which multiple left transverse rods are fixed. A left retaining ring and a left square sleeve are respectively fixed at both ends of the left longitudinal rod.

6. The method for detecting and clearing ash blockage using gravity according to claim 5, characterized in that: The right stirring rod includes a right longitudinal rod, on which multiple right transverse rods are fixed. A right retaining ring and a right square sleeve are respectively fixed at both ends of the right longitudinal rod.

Citation Information

Cited By

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