Fly ash conveying and arch breaking device
By introducing high-pressure gas and vibration devices into the fly ash conveying system, the problem of fly ash blockage is solved, and smooth flow and efficient conveying of fly ash are achieved. The system is simple in structure and has significant effects.
Patent Information
- Application Number
- CN202520122543.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Fly ash is prone to sticking and clogging during storage and transportation, leading to accumulation on the screen. Existing technologies are unable to effectively solve the problem of smooth material flow and discharge.
Design a fly ash conveying arch-breaking device, including a high-pressure gas storage cylinder, a main gas pipe, a gas distribution pipe and an arch-breaking through hole. The device uses high-pressure gas to break up the arches on the screen, and combines a vibration unit and the Venturi principle to ensure smooth conveying of fly ash.
By combining high-pressure gas and a vibration device, the blockage of fly ash on the screen is effectively broken, enabling smooth flow and efficient transportation of fly ash. The structure is simple and the effect is remarkable.
Smart Images
Figure CN223792194U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of fly ash conveying, and in particular relates to a fly ash conveying arch-breaking device. Background Technology
[0002] Fly ash is an industrial byproduct produced by coal-fired power plants during coal combustion. It mainly consists of the unburned portion of coal and soot after combustion at high temperatures. The formation of this fine ash-like substance is closely related to the operation of coal-fired power plants, especially the operating conditions of combustion in the furnace, the type of coal, and its composition.
[0003] Fly ash is mainly composed of silicon dioxide, aluminum dioxide, ferric oxide, and calcium oxide, and its physical and chemical properties are very stable. Common fly ash is divided into two grades: F and C. Grade F fly ash typically comes from low-ash coal and is mainly used as an admixture in cement and concrete; while Grade C fly ash comes from high-ash coal, contains a certain amount of calcium, and has better cementing properties.
[0004] The initial application of fly ash was due to its economic advantages in reducing the cost of cement and concrete. However, with increasing environmental awareness and the development of resource recycling technologies, the application scope of fly ash has gradually expanded. It can not only be used as an admixture in concrete to improve its strength and durability, but also reduce the weight of buildings and lower energy consumption. Furthermore, fly ash has shown good application potential in road engineering, soil improvement, and environmentally friendly building materials.
[0005] Coal-fired power plants typically construct multiple fly ash towers within the plant area, based on the production volume and distribution of fly ash, to store it. The fly ash is then blown through ventilation ducts to a centralized collection point for centralized processing. When the fly ash enters the ventilation duct from the tower, it is sieved through a screen. Although the fly ash particles are very small and most can pass through the screen, they tend to clump together after prolonged storage, forming particles. The sieve and vibration device help to break up these particles. However, even fly ash particles smaller than the sieve openings can still accumulate on the screen and fail to fall off. Therefore, an arch-breaking device is needed to address this issue. Arch-breaking refers to using physical or mechanical means to resolve material blockages in the silo, ensuring smooth flow and discharge of the material. Utility Model Content
[0006] The technical problem to be solved by this utility model is to provide a fly ash conveying arch-breaking device to address the shortcomings of the existing devices mentioned above.
[0007] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:
[0008] A fly ash conveying arch-breaking device includes a fly ash tower, a fly ash outlet pipe connected to the lower end of the fly ash tower, a screen installed inside the fly ash outlet pipe, and a fly ash conveying pipe connected to the lower end of the fly ash outlet pipe. Fly ash is stored in the fly ash tower, and the fly ash can fall into the fly ash conveying pipe after passing through the screen inside the fly ash outlet pipe. The fly ash conveying arch-breaking device also includes an arch-breaking unit, which includes a high-pressure gas cylinder, a main gas pipe, a pump, and several branch gas pipes. The high-pressure gas cylinder is connected to one end of the main gas pipe, and the other end of the main gas pipe is connected to one end of each branch gas pipe. The pump is installed on the main gas pipe and is used to control the amount of gas input from the main gas pipe to the branch gas pipes. Several arch-breaking through holes are provided on the fly ash outlet pipe, which are located below the screen and facing the screen. The other end of the branch gas pipe is connected to the arch-breaking through holes.
[0009] To optimize the above technical solution, the specific measures also include:
[0010] The number of the aforementioned gas distribution pipes is four, and correspondingly, the number of arch-breaking through holes is also four, with each arch-breaking through hole arranged at an equal arc on the powder outlet pipe.
[0011] The screen described above has multiple sieve holes, the diameter of which is larger than the diameter of fly ash.
[0012] The aforementioned fly ash conveying arch-breaking device is equipped with a vibration unit, which includes a vibration motor and a vibration plate. The vibration plate is attached to the fly ash discharge pipe, and the vibration motor and the vibration plate are connected. The vibration motor can drive the vibration plate to vibrate, thereby causing the vibration plate to drive the fly ash discharge pipe to vibrate.
[0013] The vibrating plate and the screen are at the same height.
[0014] The bottom of the aforementioned fly ash outlet pipe is equipped with a necking plate, which extends into the fly ash conveying pipe, making the fly ash conveying pipe narrow at the bottom of the outlet pipe. When the air flows inside the fly ash conveying pipe, the fly ash at the bottom of the outlet pipe can be drawn into the fly ash conveying pipe through the Venturi principle.
[0015] The upper end of the aforementioned necking plate is connected to the bottom of the fly ash outlet pipe, and the lower end extends obliquely into the fly ash conveying pipe, with the oblique direction being the same as the airflow direction inside the fly ash conveying pipe.
[0016] A switch is installed at the top of the powder outlet pipe, which can open and close the powder outlet pipe.
[0017] The pump mentioned above is a peristaltic pump, which can periodically open and close the main air pipe.
[0018] An installation platform is fixedly placed on the ground, and the high-pressure gas cylinder, pump and vibration motor are all fixedly installed on the installation platform.
[0019] The beneficial effects of this utility model are:
[0020] 1. This utility model sets up an arch-breaking unit, uses a high-pressure gas storage cylinder to provide high-pressure gas, and uses the arch-breaking through holes facing the screen to blow the gas from bottom to top onto the screen, causing the fly ash on the screen to shift, thereby breaking the arch of the fly ash on the screen. This utility model has a simple structure and good effect.
[0021] 2. The arch-breaking through holes of this utility model are arranged in an arc shape on the powder outlet pipe, and each arch-breaking through hole faces a different direction. Therefore, it can generate cross and opposing airflows, which can better agitate the fly ash on the screen and achieve a better arch-breaking effect. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of a fly ash conveying arch-breaking device according to this utility model;
[0023] Figure 2 yes Figure 1 Internal structure diagram;
[0024] Figure 3 yes Figure 2 Enlarged view of the structure of part A.
[0025] The attached diagram is labeled as follows: 1. Fly ash tower, 2. Powder outlet pipe, 21. Screen, 22. Arch breaking through hole, 23. Neck reduction plate, 24. Switch, 3. Fly ash conveying pipe, 4. Arch breaking unit, 41. High pressure gas cylinder, 42. Main gas pipe, 43. Pump, 44. Distribution pipe, 5. Vibration unit, 51. Vibration motor, 52. Vibration plate, 6. Mounting platform. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.
[0027] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.
[0028] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.
[0029] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “a,” “an,” “an,” “the,” and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or units (elements) is not limited to the listed steps or units, but may also include steps or units not listed, or may include other steps or units inherent to these processes, methods, products, or devices. The terms “connected,” “linked,” “coupled,” and similar words used in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms “multiple” / “several” used in this application refer to two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can indicate: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following objects are in an "or" relationship. The terms "first," "second," and "third" used in this application are merely to distinguish similar objects and do not represent a specific ordering of the objects.
[0030] like Figure 1-2 As shown, the main structure of this utility model includes a fly ash tower 1, a fly ash outlet pipe 2, a fly ash conveying pipe 3, an arch-breaking unit 4, a vibration unit 5, and an installation platform 6.
[0031] The fly ash tower 1 has a bottom-narrowing structure. Fly ash is stored in the fly ash tower 1. The bottom of the fly ash tower 1 is connected to the discharge pipe 2 via a flange. A switch 24 is installed on the discharge pipe 2. This switch 24 is manually operated and is normally closed. It is only opened when the fly ash in the fly ash tower 1 needs to be transferred, and the fan of the fly ash conveying pipe 3 is simultaneously turned on to transport the fly ash to the collection position via the fly ash conveying pipe 3. A screen 21 with numerous perforations is installed inside the discharge pipe 2. Four anti-arching through holes 22 are opened below the screen 21. These anti-arching through holes 22 are inclined holes that penetrate the discharge pipe 2. The opening of the anti-arching through holes 22 is lower on the outside and higher on the inside. A connecting end is provided on the outside of the anti-arching through holes 22 for connecting with the gas distribution pipe 44. The lower end of the discharge pipe 2 is connected to the fly ash conveying pipe 3. 2 is a vertical pipe, and 3 is a horizontal pipe. A necking plate 23 is installed at the lower end of the outlet pipe 2. The lower end extends into the fly ash conveying pipe 3 at an angle. The angle is the same as the airflow direction in the fly ash conveying pipe 3. The necking plate 23 makes the fly ash conveying pipe 3 narrow at the bottom of the outlet pipe 2. When the air flows in the fly ash conveying pipe 3, the fly ash conveying pipe 3 can draw the fly ash at the bottom of the outlet pipe 2 into the fly ash conveying pipe 3 through the Venturi principle.
[0032] like Figure 3 As shown, the arch-breaking unit 4 includes a high-pressure gas cylinder 41, a main gas pipe 42, a peristaltic pump, and four gas distribution pipes 44. The high-pressure gas cylinder 41 stores gas with a certain pressure, ranging from approximately 103 to 138 bar. The gas is air. One end of the high-pressure gas cylinder 41 is connected to the main gas pipe 42, and the other end of the main gas pipe 42 is simultaneously connected to one end of each gas distribution pipe 44. The other end of each gas distribution pipe 44 is connected to the arch-breaking through hole 22. The peristaltic pump is installed on the main air pipe 42. The peristaltic pump is used to control the amount of air input from the main air pipe 42 to the branch air pipe 44. The characteristic of the peristaltic pump is that it can distribute a predetermined amount of air to each branch air pipe 44 with each peristalsis, and it will make the air output intermittent. By controlling the peristaltic interval of the peristaltic pump, the gas ejected from the arch-breaking through hole 22 is intermittent. Most of the time, the fly ash on the screen 21 falls normally. For a small part of the time, the air blows upward to disturb the fly ash on the screen 21, thus breaking the arch of the fly ash on the screen 21.
[0033] The vibration unit 5 includes a vibration motor 51 and a vibration plate 52. The vibration plate 52 is attached to the powder outlet pipe 2. The vibration motor 51 and the vibration plate 52 are connected. The vibration motor 51 can drive the vibration plate 52 to vibrate, which in turn causes the vibration plate 52 to drive the powder outlet pipe 2 to vibrate. The vibration plate 52 is at the same height as the screen 21.
[0034] An installation platform 6 is fixedly placed on the ground, and the high-pressure gas cylinder 41, peristaltic pump, and vibration motor 51 are all fixedly installed on the installation platform 6. The installation platform 6 is made of stainless steel, and the high-pressure gas cylinder 41 can be removed from the installation platform 6.
[0035] When using the device of this utility model, simply turn on the switch 24, the peristaltic pump and the vibration motor 51, so that the fly ash in the fly ash tower 1 enters the fly ash conveying pipe 3 through the powder outlet pipe 2.
[0036] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.
Claims
1. A fly ash conveying arch-breaking device, comprising a fly ash tower (1), wherein the lower end of the fly ash tower (1) is connected to a discharge pipe (2), a screen (21) is provided inside the discharge pipe (2), the lower end of the discharge pipe (2) is connected to a fly ash conveying pipe (3), fly ash is stored in the fly ash tower (1), and the fly ash can fall into the fly ash conveying pipe (3) after passing through the screen (21) inside the discharge pipe (2), characterized in that: The fly ash conveying arch-breaking device also includes an arch-breaking unit (4), which includes a high-pressure gas cylinder (41), a main gas pipe (42), a pump (43), and several branch gas pipes (44). The high-pressure gas cylinder (41) is connected to one end of the main gas pipe (42), and the other end of the main gas pipe (42) is connected to one end of each branch gas pipe (44). The pump (43) is installed on the main gas pipe (42) and is used to control the amount of gas input from the main gas pipe (42) to the branch gas pipes (44). Several arch-breaking through holes (22) are provided on the fly ash outlet pipe (2). The arch-breaking through holes (22) are located below the screen (21) and facing the screen (21). The other end of the branch gas pipe (44) is connected to the arch-breaking through holes (22).
2. The fly ash conveying arch-breaking device according to claim 1, characterized in that: The number of gas distribution pipes (44) is four, and correspondingly, the number of arch-breaking through holes (22) is also four. Each arch-breaking through hole (22) is arranged on the powder outlet pipe (2) with equal arc.
3. The fly ash conveying arch-breaking device according to claim 1, characterized in that: The screen (21) is provided with multiple screen holes, and the diameter of the screen holes is larger than the diameter of fly ash.
4. The fly ash conveying arch-breaking device according to claim 1, characterized in that: The fly ash conveying arch-breaking device is equipped with a vibration unit (5), which includes a vibration motor (51) and a vibration plate (52). The vibration plate (52) is attached to the fly ash discharge pipe (2). The vibration motor (51) and the vibration plate (52) are connected. The vibration motor (51) can drive the vibration plate (52) to vibrate, thereby causing the vibration plate (52) to drive the fly ash discharge pipe (2) to vibrate.
5. The fly ash conveying arch-breaking device according to claim 4, characterized in that: The vibrating plate (52) and the screen (21) are at the same height.
6. The fly ash conveying arch-breaking device according to claim 1, characterized in that: The bottom of the discharge pipe (2) is provided with a necking plate (23), and part of the necking plate (23) extends into the fly ash conveying pipe (3), so that the fly ash conveying pipe (3) narrows at the bottom of the discharge pipe (2). When the air flows in the fly ash conveying pipe (3), the fly ash conveying pipe (3) can suck the fly ash at the bottom of the discharge pipe (2) into the fly ash conveying pipe (3) through the Venturi principle.
7. The fly ash conveying arch-breaking device according to claim 6, characterized in that: The upper end of the necking plate (23) is connected to the bottom of the powder outlet pipe (2), and the lower end extends obliquely into the fly ash conveying pipe (3), with the oblique direction being the same as the airflow direction inside the fly ash conveying pipe (3).
8. The fly ash conveying arch-breaking device according to claim 1, characterized in that: A switch (24) is provided on the upper part of the powder outlet pipe (2), and the switch (24) can open and close the powder outlet pipe (2).
9. The fly ash conveying arch-breaking device according to claim 1, characterized in that: The pump (43) is a peristaltic pump, which can periodically open and close the main air pipe (42).
10. The fly ash conveying arch-breaking device according to claim 4, characterized in that: ground An installation platform (6) is fixedly placed on the platform, and the high-pressure gas cylinder (41), pump (43) and vibration motor (51) are all fixedly installed on the installation platform (6).