A new self-supporting automatic dust unloading system
Patent Information
- Application Number
- CN202521381338.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-02
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-07-02
AI Technical Summary
[0002]铅锌混合烟尘、氧化物料粘性强、易堵结，卸料很难实现自动化，另外由于比重大，收集的大量铅锌物料压在阀板上造成阀板偏重拉出、插入阀体困难，进而破碎密封圈导致泄尘，另外阀板受烟尘重力部分下挠甚至阀板变形，会导致阀板与阀体密封环摩擦力增大，因此电机频繁故障，加之冶炼、氧化物料烟尘成分复杂、含S高且黏性大，烟尘超细粉尘粒径5～10umm，200目及以下粒径占比96.8%，因此运行过程中容易卡死、壳体泄尘、腐蚀，严重影响到正常运行、电机寿命，因此在生产实践中要频繁清理并更换、处理才能保证设备正常工作，严重影响生产成本
本实用新型通过高、低阻旋料位自动控制烟尘卸料运行，解决了铅锌混合烟尘、氧化物料堵结尘颗粒物堆积、粘结问题，实现了连续、自动化作业，同时也解决了卸灰阀在复杂精矿、氧化烟尘物料条件下泄露及故障率高的问题，保证了系统可靠、稳定运行。
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Figure CN224767972U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lead-zinc pyrometallurgical technology, and in particular to a novel self-pressurized automatic dust unloading system. Background Technology
[0002] The mixed lead and zinc dust and oxide materials are highly viscous and prone to clogging, making automated unloading difficult. Furthermore, due to their high density, the large amount of collected lead and zinc material presses against the valve plate, causing it to become unbalanced and difficult to pull out or insert into the valve body, potentially leading to broken seals and dust leakage. Additionally, the valve plate is partially deflected or even deformed by the weight of the dust, increasing friction between the valve plate and the valve body sealing ring, resulting in frequent motor failures. Moreover, the smelting and oxide dust has a complex composition, high sulfur content, and high viscosity. The ultrafine dust particles are 5-10 μm in diameter, with 96.8% being 200 mesh or smaller. Therefore, during operation, it is prone to jamming, dust leakage from the casing, and corrosion, severely affecting normal operation and motor lifespan. In production practice, frequent cleaning, replacement, and treatment are necessary to ensure normal equipment operation, significantly impacting production costs. Utility Model Content
[0003] The purpose of this invention is to provide a novel self-pressurized automatic dust unloading system to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A novel self-pressurized automatic dust unloading system includes: The unloading valve plate has rollers around its lower part and baffles around the valve cavity to ensure the normal operation of the valve plate under the gravity of the smoke and dust. High-resistance rotary level sensor and low-resistance rotary level sensor are used to detect high and low dust levels and send signals to the control box, respectively. The control box, connected to the low-resistance rotary level sensor, the high-resistance rotary level sensor, and the unloading valve motor, is used to control the opening and closing of the unloading valve based on the material level signal. The unloading valve motor is controlled by the control box, drives the unloading valve plate to move, and is equipped with a torque switch protection device; The electric vibrator, controlled by a control box, vibrates intermittently during the unloading process to prevent dust accumulation. The two-stage self-pressure unloading valve structure automatically switches to the backup valve in case of failure of the first-stage valve, ensuring continuous operation; Top manual shut-off valve for manually shutting off the unloading channel in an emergency; The side graphite packing sealing chamber and flange gland cavity are used to enhance sealing and facilitate maintenance.
[0005] The operation of the unloading valve plate is controlled by a limit switch. When the valve plate moves to position A or B, a trigger signal is fed back to the control box.
[0006] The operating frequency of the electric vibrator is synchronized with the operating cycle of the unloading valve motor.
[0007] The baffle plate cooperates with the rollers of the unloading valve plate to reduce the frictional resistance of the flue gas on the valve plate.
[0008] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: This invention solves the problems of lead-zinc mixed dust and oxide material blockage and dust particle accumulation and adhesion by automatically controlling the dust discharge operation through high and low resistance swirl levels. It realizes continuous and automated operation, and also solves the problems of leakage and high failure rate of the ash discharge valve under complex concentrate and oxidized dust material conditions, ensuring the reliable and stable operation of the system. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model.
[0010] Figure 2 This is a utility model Figure 1 A schematic diagram of the cross-sectional structure at point AA.
[0011] Figure 3 This is a three-dimensional structural diagram of the installation of this utility model.
[0012] Figure 4 This is a top view of the installation of this utility model.
[0013] Figure 5 This is a schematic diagram of the installation layout of this utility model.
[0014] The attached figures are numbered and named as follows: 1. Top manual shut-off valve; 4. Baffle plate; 5. Discharge valve plate; 7. Control box; 8. Discharge valve motor; 9. Low-resistance rotary level sensor; 10. High-resistance rotary level sensor; 11. Electric vibrator. Detailed Implementation
[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0017] like Figure 1-5 As shown, this utility model provides a novel self-pressurized automatic dust unloading system, comprising: a discharge valve plate 5, with rollers around its lower part and baffles 4 around the valve cavity to ensure normal operation of the valve plate under the gravity of dust; a high-resistance rotary level sensor 10 and a low-resistance rotary level sensor 9, respectively used to detect high and low dust levels and send signals to the control box 7; the control box 7, connected to the low-resistance rotary level sensor 9, the high-resistance rotary level sensor 10 and the discharge valve motor 8, used to control the opening and closing of the discharge valve according to the level signal; the discharge valve motor 8, controlled by the control box 7, drives the discharge valve plate 5 to operate and is equipped with a torque switch protection device; an electric vibrator 11, controlled by the control box 7, intermittently vibrates during the unloading process to prevent dust accumulation; a two-stage self-pressurized discharge valve structure that automatically switches to the backup valve when the primary valve fails to ensure continuous operation; a top manual shut-off valve 1, used to manually shut off the discharge channel in an emergency; and a side graphite packing sealing chamber and flange gland cavity to enhance sealing and facilitate maintenance.
[0018] The operation of the unloading valve plate 5 is controlled by a limit switch. When the valve plate moves to position A or B, a trigger signal is fed back to the control box 7.
[0019] The working frequency of the electric vibrator 11 is synchronized with the operating cycle of the unloading valve motor 8. It is automatically controlled by the control box to vibrate during the working period of the unloading valve to prevent dust from accumulating on the bin wall.
[0020] The baffle 4 and the roller of the unloading valve plate 5 cooperate to reduce the frictional resistance of the flue gas on the valve plate.
[0021] After implementing this utility model, our company has achieved automated operation and continuous and stable operation of the unloading system for lead-zinc mixed dust and oxide materials by controlling the unloading process. This has greatly improved the system's operating rate and service life, improved the operating and working environment, and significantly reduced the accident rate and spare parts consumption. Taking the LD150 electrostatic precipitator as an example, it saves approximately 320,000 yuan in spare parts life per year.
Claims
1. A novel self-pressurized automatic dust unloading system, characterized in that, include: The unloading valve plate (5) is equipped with rollers around its lower part and baffles (4) are provided around the valve cavity to ensure the normal operation of the valve plate under the gravity of the dust. High-resistance rotary level sensor (10) and low-resistance rotary level sensor (9) are used to detect high and low dust levels and send signals to the control box (7), respectively. The control box (7) is connected to the low-resistance rotary level sensor (9), the high-resistance rotary level sensor (10) and the unloading valve motor (8) to control the opening and closing of the unloading valve according to the material level signal; The unloading valve motor (8) is controlled by the control box (7) to drive the unloading valve plate (5) to move, and is equipped with a torque switch protection device; An electric vibrator (11) is controlled by a control box (7) and vibrates intermittently during the unloading process to prevent dust accumulation. The two-stage self-pressure unloading valve structure automatically switches to the backup valve in case of failure of the first-stage valve, ensuring continuous operation; Top manual shut-off valve (1) is used to manually shut off the unloading channel in an emergency. The side graphite packing sealing chamber and flange gland cavity are used to enhance sealing and facilitate maintenance.
2. The novel self-pressurized automatic dust unloading system according to claim 1, characterized in that: The operation of the unloading valve plate (5) is controlled by a limit switch. When the valve plate moves to position A or B, a trigger signal is fed back to the control box (7).
3. The novel self-pressurized automatic dust unloading system according to claim 1, characterized in that: The operating frequency of the electric vibrator (11) is synchronized with the operating cycle of the unloading valve motor (8).
4. The novel self-pressurized automatic dust unloading system according to claim 1, characterized in that: The baffle (4) cooperates with the rollers of the unloading valve plate (5) to reduce the frictional resistance of the flue gas on the valve plate.