Anti-bonding ash discharging device
By installing a spiral inner cylinder and magnetic bearing system inside the ash hopper, combined with the injection of loosening air through the ash spraying ring pipe, the problem of ash sticking and clogging in the ash hopper was solved, enabling smooth discharge of ash and improving the sealing and reliability of the equipment.
Patent Information
- Application Number
- CN202520263609.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Ash produced during the combustion or gasification of biomass or municipal solid waste tends to adhere in the ash hopper, causing blockages. Existing technologies are insufficient to effectively prevent adhesion and ensure smooth ash discharge.
A spiral inner cylinder is installed inside the ash hopper and equipped with a magnetic bearing system. Combined with the loosening air injected through the ash spraying ring pipe, the relative movement between the spiral inner cylinder and the inner wall of the ash hopper and the action of the loosening air prevent ash from sticking together and achieve smooth ash discharge.
It effectively prevents ash from sticking in the ash hopper, ensures smooth ash flow, reduces equipment sealing, avoids equipment wear and fly ash leakage, and reduces equipment energy consumption.
Smart Images
Figure CN223755384U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of anti-adhesion ash discharging devices, relate to the technical field of biomass, solid waste gasification combustion etc.. BACKGROUND
[0002] When biomass or domestic waste is combusted or gasified as fuel, it often has the characteristics of complex composition, low calorific value, high moisture content, small bulk density, high volatile component and high alkali content. Correspondingly, the ash generated during the combustion or gasification of domestic waste, industrial combustible waste, hazardous waste and biomass usually has a porous and fluffy state with small true density and strong adhesion, which can easily stick and block in various ash hoppers, including the ash hopper below the separator of a fluidized bed, the ash hopper connecting the second and third channels of a grate furnace, and the ash hopper below the tail shaft of various furnace types. SUMMARY
[0003] The utility model aims at providing a kind of anti-adhesion ash discharging device, by installing spiral inner cylinder in ash hopper, form relative motion, reach the purpose of scraping ash anti-adhesion.
[0004] The utility model is realized by the following technical solutions.
[0005] According to one of the embodiments, the utility model provides an anti-adhesion ash discharging device, which can be arranged at the lower part of an ash hopper. The ash hopper is in the shape of a funnel, including a conical hopper arranged at the upper part and a cylindrical ash falling pipe connected to the bottom of the conical hopper. The anti-adhesion ash discharging device comprises:
[0006] A spiral inner cylinder can be arranged close to the inner wall of the ash hopper and has a shape corresponding to that of the ash hopper, which is arranged in a gradually expanding manner from bottom to top. The spiral inner cylinder is selected from a spiral blade structure or a solenoid structure.
[0007] A magnetic bearing system is arranged at the lower part of the ash falling pipe, and the spiral inner cylinder can rotate under the drive of the magnetic bearing system.
[0008] In the above technical solution, a spray ring pipe is arranged at the top of the ash falling pipe, and 2-4 spray ports are arranged on the spray ring pipe. The spray ports are uniformly arranged around the ash falling pipe and can spray loose air into the ash hopper.
[0009] In the above technical solution, the spray ports are communicated with the ash falling pipe through a loose air pipe, which is arranged horizontally or upwardly, and the upward angle β is ≤30°.
[0010] In the above technical solution, when the spiral inner cylinder is selected from a spiral blade structure, the spiral inner cylinder mainly consists of a plurality of spiral-shaped shaftless blades.
[0011] In the technical scheme, the magnetic bearing system comprises a rotor arranged in the ash bucket and a driving motor and a controller arranged outside the ash bucket.
[0012] Compared with the prior art, the utility model has the advantages and beneficial effects that:
[0013] Simple structure, easy to implement, not easy to deform when used in medium-high temperature ash bucket, and the use of magnetic bearing makes the ash falling pipe have good airtightness. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 The utility model relates to a schematic diagram of an ash discharging device.
[0015] Figure 2 The utility model relates to a loosening air pipe setting schematic diagram.
[0016] Wherein, 1 - cone bucket, 2 - ash falling pipe, 3 - spiral inner cylinder, 4 - magnetic bearing system, 5 - ash spraying ring pipe. DETAILED DESCRIPTION
[0017] The specific implementation and working process of the utility model will be further explained in combination with the drawings. Although the exemplary embodiments of the utility model are shown in the drawings, it should be understood that the utility model can be realized in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the utility model and to convey the complete scope of the utility model to those skilled in the art.
[0018] The up, down, left, right, front and back orientation terms in the present application file are established based on the positional relationship shown in the drawings. If the drawings are different, the corresponding positional relationship may also change, so it cannot be understood as a limitation on the scope of protection. In the description of the following embodiments, the meaning of "a plurality of" and "several" is two and more than two, unless otherwise explicitly specified.
[0019] In the process of biomass and combustible solid waste combustion, high-temperature fine ash is generated at the bottom of the separator (including inertial separator, cyclone separator, and even coal economizer). Due to the high content of alkali metal in the ash, alkali metal oxides or sulfides often make the fine ash structure dense and have strong adhesion.
[0020] As Figure 1 As shown in the utility model provides a kind of anti-adhesion ash discharging device, it can be arranged in the lower part of ash bucket.Ash bucket is funnel-shaped, including the cone bucket and ash falling pipe connected in sequence, i.e., the cone bucket arranged in upper part and the cylindrical ash falling pipe connected with the bottom of cone bucket.
[0021] The ash discharging device comprises a spiral inner cylinder 3, which is arranged in the ash bucket in a gradually expanding manner from bottom to top and is close to the inner wall of the ash bucket.
[0022] The spiral inner cylinder 3 is selected from a spiral blade structure or a solenoid structure and is arranged in an axis-free solenoid structure. When the spiral inner cylinder is selected from the spiral blade structure, the spiral inner cylinder mainly comprises a plurality of spiral axis-free blades. Preferably, the spiral blade structure is drawn from a thin sheet of heat-resistant steel. Similarly, the solenoid material is also selected from heat-resistant steel.
[0023] The magnetic bearing system 4 is further arranged in the lower part of the ash falling pipe. The magnetic bearing system 4 mainly comprises a controller, a rotor, an electromagnet, a sensor, a power amplifier and a driving motor. The spiral inner cylinder is fixedly arranged on the rotor and can rotate under the driving of the magnetic bearing system 4. As a preferred technical solution, the spiral inner cylinder rotates 60°-90° clockwise and / or counterclockwise under the driving of the rotor, instead of rotating a full circle, thereby saving energy consumption and reducing wear and tear. The spiral inner cylinder 3 rotates in the ash bucket in one direction or left and right (clockwise or counterclockwise), forms relative motion with the ash bucket, thereby achieving the purpose of disturbing and scraping the adhered ash layer in the ash bucket, making the medium and high temperature ash flow smoothly and avoiding the formation of adhered ash in the ash bucket.
[0024] As a further optimized technical solution, the wall surface of the ash falling pipe in contact with the magnetic bearing system 4 adopts a heat-resistant ceramic structure.
[0025] The use of the magnetic bearing system 4 instead of the gear can maintain the sealing of the ash bucket and avoid the secondary pollution caused by the leakage of fly ash.
[0026] Due to the adoption of the spiral blade or solenoid structure, the wear is small. The application of the magnetic bearing system solves the sealing problem of the ash falling pipe and also ensures smooth and smooth ash falling in the ash falling pipe.
[0027] In order to better disturb the ash in the ash bucket, further, as shown in Figure 2 The top of the ash falling pipe 2 is provided with a dust injection ring pipe 5, the dust injection ring pipe 5 is provided with 2-4 injection ports, the injection ports are uniformly arranged around the ash falling pipe 2 and are in communication with the ash falling pipe 2 through a loosening air pipe, the loosening air pipe is arranged horizontally or at an upward angle β towards the ash bucket, so that the loosening air is injected at a horizontal angle or upwards, and the upward angle β is ≤30°. Air is usually used as the loosening air.
[0028] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An anti-sticking ash discharging device capable of being provided at a lower portion of an ash hopper, the ash hopper being funnel-shaped, including a conical hopper (1) provided at an upper portion and a cylindrical ash falling pipe (2) connected to a bottom of the conical hopper (1), characterized in that, The utility model relates to a kind of ash falling pipe and ash bucket, including: Spiral inner tube (3) can be close to the ash bucket inner wall setting, and shape corresponds with the shape of the ash bucket: the spiral inner tube selects helical blade structure or solenoid structure; Magnetic bearing system (4) is arranged in the ash falling pipe, and the spiral inner tube can be rotated under the driving of the magnetic bearing system (4).
2. The ash discharge device according to claim 1, characterized by When the spiral inner tube selects helical blade structure, the spiral inner tube is mainly composed of several spiral-shaped shaftless blades.
3. The ash discharge device according to claim 2, characterized by The top of the ash falling pipe (2) is provided with a dust injection ring pipe (5), and 2-4 injection ports are arranged on the dust injection ring pipe (5). The injection ports are evenly arranged around the ash falling pipe (2) and can inject loose air into the ash bucket.
4. The ash discharge device according to claim 3, characterized by The injection port and the ash falling pipe (2) are communicated through a loose air pipe, which is horizontally or upwardly arranged, and the upward angle β is ≤30°.