An economizer ash conveying device
By installing a crushing mechanism below the ash hopper, and using an electric push rod to drive the crushing plate and right-angle bars to crush agglomerated materials, the problem of conveying pipe blockage is solved, and the safety and stability of the ash conveying system are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA YINXING POWER GENERATION CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-31
AI Technical Summary
In existing economizer ash conveying systems, the material falling from the ash hopper is prone to caking, leading to blockage of the conveying pipe and affecting the safe and stable operation of the system.
A crushing mechanism is installed below the ash hopper, including an intermediate box and a crushing plate. An electric push rod drives the crushing plate to cooperate with the right-angle bar to crush agglomerated materials and prevent them from entering the conveying pipe.
It effectively prevents material from caking, reduces the risk of blockage in conveying pipes, and improves the safety and stability of the ash conveying system.
Smart Images
Figure CN224580287U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of economizers, and more specifically, to an economizer ash conveying device. Background Technology
[0002] In thermal power plants, the ash conveying system is an important part of the plant's operation, and it uses compressed air ash conveying technology.
[0003] The ash in the economizer ash hopper of pulverized coal boilers is easily affected by factors such as high carbon content in the coal and improper control of pulverized coal particle size, resulting in large and heavy ash particles. Originally, a silo pump 8 relied on compressed air pressure to transport the ash to the ash silo hundreds of meters away. Figure 1 (Middle dashed line) Long-term operation will cause wear and tear on the ash conveying pipeline and waste a lot of compressed air, posing a hidden danger to the long-term stable operation of the boiler.
[0004] Chinese patent application CN219913105U discloses a non-powered ash conveying device for an economizer ash hopper, comprising a furnace, an ash hopper, and a slag remover. The slag remover is located below the ash hopper, the furnace is under negative pressure, and a slag bin is configured at the output end of the slag remover. This device eliminates the need for compressed air ash conveying, is suitable for conveying large-particle coal powder, and avoids clogging of the ash conveying route due to sedimentation.
[0005] The above-mentioned scheme has the following shortcomings: The economizer ash conveying system uses compressed air for conveying. The existing system consists of a discharge dome valve, a bin pump, and conveying pipelines. Large particles in the fly ash are collected from below the economizer ash hopper. Under the control of the ash conveying programmable control system, the ash is discharged sequentially by each bin pump and then uniformly conveyed to the electrostatic precipitator inlet. However, the material falling from the ash hopper may form clumps due to long-term accumulation. These clumps fall into the conveying pipe and block the pipe. Long-term accumulation of large amounts of ash can cause the conveying pipe to sink and even collapse, posing a safety hazard. This seriously affects the safe and stable operation of the ash conveying system. Utility Model Content
[0006] To overcome the above deficiencies, this application provides an economizer ash conveying device, which aims to improve the safety hazard of materials falling from the ash hopper potentially forming clumps due to long-term accumulation. These clumps can then fall into the conveying pipe, causing blockage and eventually leading to the pipe sinking and collapsing due to long-term and large-scale ash accumulation. This seriously affects the practicality of the ash conveying system's safe and stable operation.
[0007] This application provides an economizer ash conveying device, including...
[0008] The crushing mechanism includes an intermediate box and a crushing plate disposed inside the intermediate box. The interior of the intermediate box is provided with a plurality of right-angled bars that are linearly distributed at equal intervals and are all inclined. Both ends of the plurality of right-angled bars are fixed inside the intermediate box. The inner angles of the right-angled bars face upwards. The crushing plate is parallel to one of the right-angled sides of the right-angled bars.
[0009] A pushing mechanism is provided on the outside of the intermediate box. The pushing mechanism enables the crushing plate to move in a straight line while remaining parallel to one of the right-angled sides of the right-angled bar, and the crushing plate moves inward towards the corner of the right-angled bar.
[0010] In the above process, the compression plate is pushed by the pushing mechanism, so that the crushing plate crushes the material falling into the right angle of the strip, preventing the material falling into the conveying pipe from being clumps of dust.
[0011] In one specific implementation, one side of the intermediate box protrudes outward to form a rectangular cylinder, and the crushing plate is entirely disposed inside the rectangular cylinder, with the rectangular cylinder perpendicular to the crushing plate.
[0012] In the above implementation process, the rectangular tube is designed to provide a storage space for the crushing plate and prevent materials from falling onto the side of the crushing plate away from the right-angle strip.
[0013] In one specific implementation, the pushing mechanism includes an electric push rod and a support structure. The cylinder of the electric push rod is fixed to the outside of the intermediate box by the support structure, and the telescopic end of the electric push rod is fixed to and perpendicular to the compression plate.
[0014] In the above process, the electric push rod drives the compression plate to move by extending and retracting.
[0015] In one specific implementation, the telescopic end of the electric push rod penetrates through the rectangular tube.
[0016] In the above implementation process, the telescopic end of the electric push rod penetrates through the rectangular tube to ensure the sealing of the rectangular tube.
[0017] In one specific implementation, the support structure includes a platform plate and two support plates, the cylinder of the electric push rod is fixed to the platform plate, and the two ends of the support plates are fixed to the platform plate and the intermediate box, respectively.
[0018] In the above implementation process, the support structure is set up to provide a support point and facilitate the installation of the electric actuator.
[0019] In one specific implementation, a plurality of crushing strips are fixed on the side of the crushing plate facing the right-angle strips and are linearly distributed at equal intervals, with each crushing strip and each right-angle strip being staggered.
[0020] In the above process, when the crushing plate is connected to the right-angle bar, each crushing bar will insert into the gap between each right-angle bar, pushing out the material stuck in the gap, and at the same time improving the crushing degree.
[0021] In one specific implementation, the crushing bar has multiple serrations on the side facing the right-angle bar;
[0022] In the above implementation process, the sawtooth design is intended to improve the degree of fragmentation.
[0023] In one specific implementation, the bottom of the intermediate box protrudes downward to form a discharge cylinder, and the top of the intermediate box protrudes upward to form a feed cylinder;
[0024] In the above implementation process, the feeding cylinder is set to facilitate the flow of crushed materials, while the feed cylinder is set to facilitate the entry of materials.
[0025] In one specific implementation, both the feed cylinder and the inlet cylinder are fixedly equipped with pneumatic isolation valves via flanges;
[0026] In the above process, the pneumatic isolation valve controls the entry and exit of materials by opening and closing.
[0027] In one specific implementation, an ash hopper is provided above the intermediate box, and the discharge end of the ash hopper is fixed to a pneumatic isolation valve fixed to the feed cylinder by a flange.
[0028] In the above implementation process, the feeding end of the ash hopper is existing technology, and the ash hopper is a structure used for storage and directional feeding.
[0029] Compared with the prior art, the beneficial effects of this application are as follows: A crushing mechanism is provided below the existing ash hopper. The top of the intermediate box in the crushing mechanism is connected to the ash hopper. The interior of the intermediate box is fixed with multiple right-angled bars that are linearly spaced at equal intervals and are all inclined. A crushing plate is provided on one side of the intermediate box. The crushing plate is pushed by an electric push rod so that the crushing plate crushes the material falling into the corner of the right-angled bar, preventing the dust that falls into the conveying pipe from becoming clumps. Attached Figure Description
[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0031] Figure 1 This is a schematic diagram of an economizer ash conveying device provided by this utility model;
[0032] Figure 2 A three-dimensional structural diagram of the pushing mechanism and the crushing mechanism provided by this utility model;
[0033] Figure 3 A schematic diagram of the internal structure of the crushing mechanism provided by this utility model;
[0034] Figure 4 A schematic diagram of the internal structure of the intermediate box provided by this utility model;
[0035] Figure 5 for Figure 4 A magnified structural diagram at point A.
[0036] In the diagram: 1. Intermediate box; 2. Pneumatic isolation valve; 3. Ash hopper; 4. Electric push rod; 5. Support plate; 6. Platform plate; 7. Right-angle bar; 8. Crushing plate; 9. Feed cylinder; 10. Discharge cylinder; 11. Crushing bar. Detailed Implementation
[0037] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0038] Please see Figure 1-5 This application provides an economizer ash conveying device, including...
[0039] The crushing mechanism includes an intermediate box 1 and a crushing plate 8 disposed inside the intermediate box 1. The interior of the intermediate box 1 is provided with a plurality of right-angled bars 7 that are linearly distributed at equal intervals and are all inclined. Both ends of the plurality of right-angled bars 7 are fixed inside the intermediate box 1. The inner angles of the right-angled bars 7 face upwards. The crushing plate 8 is parallel to one of the right-angled sides of the right-angled bars 7.
[0040] The pushing mechanism is located on the outside of the intermediate box 1. The pushing mechanism enables the crushing plate 8 to move in a straight line while keeping it parallel to one of the right-angled sides of the right-angled bar 7. The crushing plate 8 moves into the corner of the right-angled bar 7. The compression plate is pushed by the pushing mechanism so that the crushing plate 8 crushes the material falling into the corner of the right-angled bar 7, preventing the material falling into the conveying pipe from becoming clumps of dust.
[0041] In the specific configuration, one side of the intermediate box 1 is tilted outward to form a rectangular cylinder. The crushing plate 8 is set inside the rectangular cylinder, and the rectangular cylinder is perpendicular to the crushing plate 8. The rectangular cylinder is designed to provide a storage space for the crushing plate 8 and prevent materials from falling onto the side of the crushing plate 8 away from the right angle bar 7.
[0042] In a specific configuration, the pushing mechanism includes an electric push rod 4 and a support structure. The cylinder of the electric push rod 4 is fixed to the outside of the intermediate box 1 through the support structure. The telescopic end of the electric push rod 4 is fixed to and perpendicular to the compression plate. The electric push rod 4 pushes and extends to move the crushing plate 8.
[0043] In a specific configuration, the telescopic end of the electric push rod 4 penetrates through the rectangular tube. This penetration of the telescopic end of the electric push rod 4 through the rectangular tube is to ensure the sealing of the rectangular tube.
[0044] In a specific configuration, the support structure includes a platform plate 6 and two support plates 5. The cylinder of the electric push rod 4 is fixed to the platform plate 6, and the two ends of the support plates 5 are fixed to the platform plate 6 and the intermediate box 1, respectively. The support structure is designed to provide a support point and facilitate the installation of the electric push rod 4.
[0045] In a specific configuration, the crushing plate 8 is fixed with a plurality of crushing strips 11 that are linearly distributed at equal intervals on the side facing the right-angle strips 7. Each crushing strip 11 is staggered with each right-angle strip 7. When the crushing plate 8 is in contact with the right-angle strips 7, each crushing strip 11 will insert into the gap between each right-angle strip 7, push out the material stuck in the gap, and at the same time improve the crushing degree.
[0046] In a specific configuration, the crushing bar 11 has multiple serrations on the side facing the right-angle bar 7. The serrations are designed to improve the crushing degree.
[0047] In a specific configuration, the bottom of the intermediate box 1 protrudes downward to form a feeding cylinder 10, and the top of the intermediate box 1 protrudes upward to form a feeding cylinder 9. The feeding cylinder 10 is designed to facilitate the flow of crushed materials, while the feeding cylinder 9 is designed to facilitate the entry of materials.
[0048] In a specific configuration, both the discharge cylinder 10 and the feed cylinder 9 are fixedly equipped with pneumatic isolation valves 2 via flanges. The pneumatic isolation valves 2 allow materials to enter and exit by opening and closing.
[0049] In a specific configuration, an ash hopper 3 is provided above the intermediate box 1. The discharge end of the ash hopper 3 is fixed to a pneumatic isolation valve 2 that is fixed to the feed cylinder 9 via a flange. The discharge end of the ash hopper 3 is existing technology. The ash hopper 3 is a structure used for storage and directional discharge.
[0050] It should be noted that the specific models and specifications of the electric push rod 4 and the pneumatic isolation valve 2 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.
[0051] It should be further explained that the power supply and principle of the electric push rod 4 and the pneumatic isolation valve 2 are clear to those skilled in the art, and will not be described in detail here.
[0052] It should be further explained that the feeding cylinder 10 is installed on the existing ash conveying system via a pneumatic isolation valve 2 fixed to it. The principle of the ash conveying system is clear to those skilled in the art and will not be described in detail here.
[0053] It should be further explained that an inspection hole is provided on one side of the intermediate box 1, which is connected to the interior. A corresponding closed door is provided on the outside of the inspection hole, so that the inspection hole can be entered for internal maintenance.
[0054] The working principle of this economizer ash conveying equipment is as follows: When using the economizer ash conveying equipment, the pneumatic isolation valve 2 of the feed cylinder 9 is activated. The material in the ash hopper 3 enters the intermediate box 1 through the feed cylinder 9, and then falls into the corners of each right-angle bar 7. After a certain amount of material flows in, the pneumatic isolation valve 2 of the feed cylinder 9 is closed, and the telescopic end of the electric push rod 4 extends, pushing out the crushing plate 8 located in the rectangular cylinder. The crushing plate crushes the material falling into the corners of the right-angle bars 7. When the crushing plate 8 is connected to the right-angle bars 7, each crushing bar 11 will insert into the gap between each right-angle bar 7, pushing out the material stuck in the gap. After crushing is completed, the crushing plate 8 is reset, and then the pneumatic isolation valve 2 of the discharge cylinder 10 is opened, and the crushed material enters the existing conveying pipe for conveying.
[0055] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A coal economizer ash removal apparatus, characterized by, include The crushing mechanism includes an intermediate box (1) and a crushing plate (8) disposed inside the intermediate box (1). The interior of the intermediate box (1) is provided with a plurality of right-angled bars (7) that are linearly distributed at equal intervals and are all inclined. The two ends of the plurality of right-angled bars (7) are fixed inside the intermediate box (1). The inner angles of the right-angled bars (7) face upwards. The crushing plate (8) is parallel to one of the right-angled sides of the right-angled bars (7). The pushing mechanism is located on the outside of the intermediate box (1). The pushing mechanism enables the crushing plate (8) to move in a straight line while keeping it parallel to one of the right-angled sides of the right-angled bar (7). The crushing plate (8) moves inward into the angle of the right-angled bar (7).
2. A coal economizer ash removal apparatus according to claim 1, wherein One side of the intermediate box (1) protrudes outward to form a rectangular cylinder, and the crushing plate (8) is set inside the rectangular cylinder, with the rectangular cylinder perpendicular to the crushing plate (8).
3. The coal economizer ash removal apparatus of claim 1, wherein, The pushing mechanism includes an electric push rod (4) and a support structure. The cylinder of the electric push rod (4) is fixed to the outside of the intermediate box (1) through the support structure. The telescopic end of the electric push rod (4) is fixed to the compression plate and perpendicular to it.
4. A coal economizer ash removal apparatus according to claim 3, wherein The telescopic end of the electric push rod (4) passes through the rectangular tube.
5. A coal economizer ash removal apparatus according to claim 3, wherein The support structure includes a platform plate (6) and two support plates (5). The cylinder of the electric push rod (4) is fixed to the platform plate (6), and the two ends of the support plate (5) are fixed to the platform plate (6) and the intermediate box (1) respectively.
6. The coal economizer ash removal apparatus of claim 1 wherein, The crushing plate (8) has a plurality of crushing strips (11) that are linearly distributed at equal intervals on one side facing the right angle strip (7), and each crushing strip (11) is staggered with each right angle strip (7).
7. The economizer ash conveying device according to claim 6, characterized in that, The crushing bar (11) has multiple serrations on the side facing the right-angle bar (7).
8. The economizer ash conveying device according to claim 1, characterized in that, The bottom of the intermediate box (1) protrudes downward to form a feed cylinder (10), and the top of the intermediate box (1) protrudes upward to form a feed cylinder (9).
9. An economizer ash conveying device according to claim 8, characterized in that, Both the unloading cylinder (10) and the feeding cylinder (9) are fixedly equipped with pneumatic isolation valves (2) via flanges.
10. An economizer ash conveying device according to claim 9, characterized in that, A hopper (3) is provided above the intermediate box (1), and the discharge end of the hopper (3) is fixed to the pneumatic isolation valve (2) which is fixed to the feed cylinder (9) by a flange.