Pneumatic ash conveying device

Abstract

The utility model provides a pneumatic ash conveying device, which relates to the technical field of ash conveying and consists of a plurality of groups of bins, a cyclone ash discharging device, a sealing tank, an unloader, an ash conveying fan and a precisely arranged conveying pipeline. A negative pressure circulation system formed by the dust conveying fan and the pipeline and a cyclone dust discharging device above the densification tank jointly ensure efficient separation and conveying of dust. Particularly, the encryption fan and the air pressure sensor which are additionally arranged can dynamically respond to the air pressure change in the pipeline, automatically adjust the power of the ash conveying fan and the state of the valve, maintain ideal suspension conveying conditions and reduce abrasion and blockage. Compared with traditional scraper conveying, the technology has the advantages that the ash conveying efficiency is remarkably improved, the failure rate and the maintenance cost are reduced, reentrainment of dust is effectively restrained, the working environment is remarkably improved, and the high-standard environmental protection requirement is met. Through the design of high automation and intelligentization, the production efficiency is improved, and meanwhile, the dual goals of environmental protection and staff health are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ash conveying, in particular to a pneumatic ash conveying device. Background Art

[0002] In modern industrial production, especially in the fields of electricity, chemical industry, etc., the treatment and transportation of powdery dust is a vital link. For a long time, scraper conveyors have been widely used as the main equipment for conveying powdery dust. However, this traditional scraper conveying device faces a series of significant technical bottlenecks and operational difficulties. Specifically, the core component of the scraper device, the scraper, is in continuous contact with the powder and wears quickly, resulting in frequent maintenance of the equipment, which greatly shortens the overall service life. This high-frequency maintenance not only increases the operating costs of the enterprise, but also each maintenance usually requires high-altitude operations, which has extremely high safety risks and poses a threat to the life safety of the operators.

[0003] In addition, the scraper conveyor is prone to serious secondary dust problems during operation, which not only affects the on-site working environment and increases the labor intensity of employees, but may also cause environmental pollution and health hazards.

[0004] The difficulty in maintenance, coupled with the high maintenance costs, has seriously affected the stability and economy of the entire ash conveying system. Utility Model Content

[0005] The utility model aims to provide a pneumatic ash conveying device, which can achieve the technical effects of improving ash conveying efficiency, improving working environment and reducing production costs.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] A pneumatic ash conveying device, characterized in that it includes several silos, cyclone ash unloading devices, a density tank, a discharger, an ash conveying fan and a conveying pipeline; the conveying pipeline sequentially connects the ash conveying fan, the silo and the cyclone ash unloading device, and is connected from the cyclone ash unloading device to the return ash conveying fan; the cyclone ash unloading device is located above the density tank, and the discharge port of the cyclone ash unloading device is connected to the density tank; the discharger is installed at the discharge port of the density tank.

[0008] Furthermore: it also includes an encryption fan installed between the encryption tank drop port and the discharger.

[0009] Furthermore: a plurality of the silos are evenly divided into two routes, the two routes of silos are connected in parallel between the ash conveying fan and the cyclone ash unloading device, and a plurality of silos in each route are connected in series.

[0010] Furthermore, a valve is installed on each of the conveying pipelines between the two silos and the ash conveying fan, namely valve one and valve two.

[0011] Furthermore: the number of silos connected in series in each route is 4-6.

[0012] Furthermore: a negative pressure conveying circulation air path is formed between the ash conveying fan and the conveying pipeline.

[0013] Furthermore: an air pressure sensor is provided on the conveying pipeline connecting the cyclone ash unloading device and the silo.

[0014] Compared with the original technology, the utility model has the following beneficial effects:

[0015] 1. This device uses a pneumatic ash conveying and dust removal device, which significantly improves the ash conveying efficiency compared with the traditional scraper conveying system. Since equipment failures caused by scraper wear are reduced, equipment downtime and production interruption frequency are reduced, thus significantly reducing production costs. In addition, the pneumatic conveying method itself has a higher degree of automation, which further improves operating efficiency.

[0016] 2. It effectively solves the secondary dust problem of the scraper conveyor. During the gas ash conveying process, the material particles are continuously suspended in the airflow, which avoids the large amount of dust generated during the conveying process from being discharged into the air, greatly improves the air quality of the workshop, reduces the potential harm to the health of employees, and reduces pollution to the environment, which meets the environmental protection standards of modern industry.

[0017] 3. This device is equipped with multiple silos, which are divided into multiple routes. Different valves are used to control the discharge of each silo. A pressure sensor is installed in the conveying pipeline connected to the cyclone dust unloading device. According to the data of the pressure sensor, the power of the dust conveying fan and the opening and closing of the valve can be adjusted to adjust the air pressure, flow rate and air-ash ratio in the conveying pipeline, so that the dust particles are always in a suspended state during the pneumatic conveying process, and the load is small, which reduces the failure frequency and maintenance cost of the dust removal system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the device;

[0019] In the figure:

[0020] 1. Ash conveying fan; 2. Silo; 3. Cyclone ash unloading device; 4. Encryption tank; 5. Discharger; 6. Encryption fan; 7. Valve 1; 8. Valve 2. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] like Figure 1 As shown: a pneumatic ash conveying device, characterized in that it includes a plurality of silos 2, a cyclone ash unloading device 3, a densification tank 4, a discharger 5, an ash conveying fan 1 and a conveying pipeline; the conveying pipeline sequentially connects the ash conveying fan 1, the silo 2 and the cyclone ash unloading device 3, and is connected from the cyclone ash unloading device 3 to the ash conveying fan 1; the cyclone ash unloading device 3 is located above the densification tank 4, and the material discharge port of the cyclone ash unloading device 3 is connected to the densification tank 4; the discharger 5 is installed at the material discharge port of the densification tank 4. The device also includes an encapsulation fan 6 installed between the material discharge port of the densification tank 4 and the discharger 5.

[0024] Several silos 2 are evenly divided into two paths, and the two silos 2 are connected in parallel between the ash conveying fan 1 and the cyclone ash unloading device 3, and several silos 2 in each path are connected in series. A valve is installed on the conveying pipeline between the two silos 2 and the ash conveying fan 1, respectively, valve one 7 and valve two 8. The number of silos 2 connected in series in each path is 5. A negative pressure conveying circulation gas path is formed between the ash conveying fan 1 and the conveying pipeline. An air pressure sensor is provided on the conveying pipeline connecting the cyclone ash unloading device 3 and the silo 2.

[0025] The working principle of the utility model is as follows:

[0026] Initial setup and startup: After the system is started, the ash conveying fan 1 starts to operate, forming a negative pressure circulation air path with the conveying pipeline, preparing for pneumatic conveying.

[0027] Silo 2 allocation and valve control: According to the actual production task, the two silos 2 are put into operation through valve 1 7 and valve 2 8. Each route contains 5 silos 2 connected in series to balance the conveying load.

[0028] Material conveying silo 2 ash discharge: The powdery dust in silo 2 is sucked into the conveying pipeline under the action of negative pressure and enters the ash conveying system with the air flow.

[0029] Air pressure monitoring and regulation: The air pressure sensor monitors the air pressure changes in the conveying pipeline in real time and feeds back the data to the control system to control the power of the ash conveying fan 1 and the opening and closing size of valves 1 7 and 2 8.

[0030] Cyclone dust unloading device 3: The dust-laden gas enters the cyclone dust unloading device tangentially through the pipeline and rotates at high speed along the inner wall of the device. The centrifugal force generated by the rotation throws the dust to the inner wall of the device, and then slides along the inner wall into the encryption tank at the bottom of the device.

[0031] Functions of the encryption tank 4 and the encryption fan 6: Dust particles pass through the conveying pipeline to the cyclone dust unloading device 3 above the encryption tank 4. The cyclone dust unloading device 3 uses centrifugal force to perform efficient solid-gas separation. The separated particle dust falls into the encryption tank 4 and then enters the discharger 5 through the drop port of the encryption tank 4. An encryption fan 6 is provided between the drop port of the encryption tank 4 and the discharger 5. The encryption fan can generate a strong airflow, further increase the airflow speed, help maintain the continuity and stability of the conveying process, and increase the unloading and packaging speed.

[0032] Precise control and feedback regulation: Based on the information provided by the air pressure sensor, the control system automatically adjusts the power of the ash conveying fan 1 and the valve opening on the conveying pipeline, and finely controls the air pressure, air flow speed and ash-to-gas ratio to ensure that dust particles remain suspended, avoid deposition and reduce wear.

[0033] Circulation and continuous conveying: The treated clean gas flows back to the ash conveying fan 1 to form a circulation, and continues the pneumatic conveying of the next cycle until all silos 2 complete the ash conveying task.

[0034] The above implementation is only to illustrate the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A pneumatic ash conveying device, characterized in that: It includes several silos, cyclone ash unloading devices, density tanks, unloaders, ash conveying fans and conveying pipelines; The conveying pipeline is connected to the ash conveying fan, the silo and the cyclone ash unloading device in sequence, and is connected from the cyclone ash unloading device to the ash conveying fan; The cyclone ash unloading device is located above the encryption tank, and the material discharge port of the cyclone ash unloading device is connected to the encryption tank; The unloader is installed at the drop-out port of the encryption tank.

2. A pneumatic ash conveying device according to claim 1, characterized in that: It also includes an encryption fan installed between the encryption tank drop port and the discharger.

3. A pneumatic ash conveying device according to claim 1, characterized in that: The plurality of silos are evenly divided into two paths, the two paths of silos are connected in parallel between the ash conveying fan and the cyclone ash unloading device, and the plurality of silos in each path are connected in series.

4. A pneumatic ash conveying device according to claim 3, characterized in that: A valve, valve 1 and valve 2, is respectively installed on the conveying pipelines between the two silos and the ash conveying fan.

5. The pneumatic ash conveying device according to claim 3, characterized in that: The number of silos connected in series in each line is 4-6.

6. The pneumatic ash conveying device according to claim 1, characterized in that: A negative pressure conveying circulation air path is formed between the ash conveying fan and the conveying pipeline.

7. The pneumatic ash conveying device according to claim 1, characterized in that: An air pressure sensor is provided on the conveying pipeline connecting the cyclone ash unloading device and the silo.

Images