Bulk material ash discharging system for sintering machine

Abstract

The utility model discloses a bulk material ash discharging system for a sintering machine, which belongs to the technical field of sintering machine equipment and comprises the sintering machine, an ash outlet at the bottom of the sintering machine is connected into a large flue, and a plurality of ash hoppers with the same specification are arranged at the bottom of the large flue side by side. A bulk material belt is arranged at an outlet below each ash bucket, each ash bucket is of a prismatic table structure with a wide upper part and a narrow lower part, a square pipeline is connected below each ash bucket, an electric ash discharging valve and a DCS (Distributed Control System) are arranged in an outlet at the bottom of each square pipeline, the electric ash discharging valve of each ash bucket is controlled by the DCS, and a vibration ash cleaning device is arranged on the outer side wall of each square pipeline. Automatic control is optimized, the workload of workers is reduced, the air leakage phenomenon caused by long ash discharging time is eradicated, the material blocking phenomenon caused by untimely ash discharging is avoided, meanwhile, the ash hopper on the ash discharging valve is effectively cleaned, and the workload of cleaning workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering machine equipment, in particular to a bulk material ash unloading system for a sintering machine. Background Art

[0002] In the process of sintering in the sintering machine, ash unloading in the large flue is one of the key steps. When using the large flue with the flue and the ash unloading valve for ash unloading, because there are many flues and ash unloading valves, the staff needs to manually open and close each ash unloading valve in a certain order. The operation is cumbersome and frequent, and the workload is huge. Various production problems may also occur due to improper operation. When the staff does not unload the ash in time, it will cause blockage and affect the unloading of the large flue. Failure to clean the missed ash hopper in time will also cause blockage on site. When the staff unloads the ash for too long or forgets to close the ash unloading valve, it will also cause serious air leakage. The air leakage of the ash unloading valve will increase the harmful air leakage in the sintering process to a certain extent, reduce the output and utilization coefficient of the sintering machine, and increase the energy consumption of the sintering process and the equipment maintenance cost. At the same time, with the continuous repetition of the sintering ash unloading process, ash will accumulate at the ash hopper ash unloading valve. More ash accumulation will affect the opening and closing of the ash unloading valve and the efficiency of ash unloading, and increase the cleaning and maintenance costs. Therefore, a bulk material unloading system for a sintering machine is needed, which can optimize and automatically control the bulk material belt unloading valve to reduce the workload of personnel, eliminate air leakage during long unloading time, solve the problem of material blockage due to untimely unloading, and solve the problem of ash accumulation at the ash hopper unloading valve, reducing the workload of personnel for cleaning and maintenance of the equipment. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a bulk material unloading system for a sintering machine to strengthen automatic control and effectively reduce the problems of material blockage and air leakage caused by manual operation. At the same time, a cleaning device is provided to effectively clean the ash hopper on the unloading valve and reduce the workload of cleaning personnel.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a bulk material ash unloading system for a sintering machine, including a sintering machine, the ash outlet at the bottom of the sintering machine is connected to the large flue, a plurality of ash hoppers of the same specifications are arranged side by side at the bottom of the large flue, a bulk material belt is arranged at the outlet below the ash hopper, the ash hopper is a prism structure that is wide at the top and narrow at the bottom, a square pipe is connected to the bottom of the ash hopper, an electric ash unloading valve is arranged in the bottom outlet of the square pipe, a DCS control system is arranged, the electric ash unloading valve of each ash hopper is controlled by the DCS control box, and a vibration cleaning device is arranged on the outer side wall of each square pipe.

[0005] A further improvement of the technical solution of the utility model is that the electric ash unloading valve is an electric plug-in type ash unloading valve.

[0006] A further improvement of the technical solution of the utility model is that the connection between the ash hopper and the inside of the square pipe adopts a round chamfer transition that is not easy to accumulate dust.

[0007] A further improvement of the technical solution of the utility model is that the vibration cleaning device includes a C-shaped ring with the same height arranged on the outer wall of each square pipe, a vibration transmission beam is penetrated through each C-shaped ring, and a vibrator is arranged on the vibration transmission beam.

[0008] A further improvement of the technical solution of the utility model is that a filling pad is arranged inside each C-shaped ring, so that the vibration transmission beam is in direct contact with the outer side wall of the square pipe.

[0009] A further improvement of the technical solution of the utility model is that the vibrator is an electric vibrator.

[0010] Due to the adoption of the above technical scheme, the technical progress achieved by the utility model is: by adding a DCS control box, introducing a DCS control system, connecting each ash discharge valve to the DCS, an automatic ash discharge program can be written in the DCS, and the ash discharge valve can be automatically controlled according to the on-site ash discharge time and conditions by using the internal program of the DCS. The program is written according to the on-site ash discharge, and the time can be changed according to the actual situation on site. The opening and closing of each ash discharge valve can be controlled by DCS, which can not only effectively replace manual labor, but also have a high degree of automation. And it can perform cumbersome opening and closing operations well. Using DCS control will not cause air leakage due to long opening time, and will not cause material blockage due to forgetting to discharge ash, effectively eliminating various production problems. By setting the upper part of the ash discharge valve as a straight up and down square pipe, not only the ash discharge is smoother, but also it is less likely to accumulate ash. At the same time, a square pipe with the same specifications is set under each ash hopper, so that a vibration transmission beam can be set, and multiple ash hoppers can be contacted at the same time to transmit vibration. By setting up a transmission beam, only a small number of vibrators can be used to transmit vibration to multiple ash hoppers to clean the dust accumulated on the side walls. At the same time, with the help of the transmission beam, the vibration of the vibrator does not directly act on the ash hopper, the vibration intensity is milder, and it is not easy to damage the ash hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 It is a structural schematic diagram of the novel;

[0013] Among them, 1. sintering machine, 2. large flue, 3. ash hopper, 31. square pipe, 32. electric ash unloading valve, 4. bulk material belt, 5. DCS control box, 6. vibration cleaning device, 61. vibrator, 62. C-shaped ring, 63 vibration transmission beam. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with the embodiments:

[0015] like Figure 1 As shown, a bulk material ash unloading system for a sintering machine includes a sintering machine 1, a bellows is provided inside the sintering machine 1, an ash outlet at the bottom of the sintering machine 1 is connected to a large flue 2, a fan is provided inside the large flue, and wind in a certain direction flows inside the large flue 2. A plurality of ash hoppers 3 of the same specifications are arranged side by side at the bottom of the large flue 2, and the sintered ash falls into each ash hopper 3 respectively. A bulk material belt 4 is provided below the outlet below the ash hopper 3, and the accumulated ash in the ash hopper 3 can fall to the bulk material belt 4 and be taken away by the belt for transfer and cleaning.

[0016] The ash hopper 3 is a prism structure that is wide at the top and narrow at the bottom. A square pipe 31 is connected to the bottom of the ash hopper 3. At the same time, the internal connection between the ash hopper 3 and the square pipe 31 adopts a round chamfer transition that is not easy to accumulate dust. An electric ash discharge valve 32 is arranged in the bottom outlet of the square pipe 31. In this embodiment, the electric ash discharge valve 32 is specifically an electric plug-in type ash discharge valve. The square pipe 31 that goes straight up and down is used for ash discharge, which is not easy to accumulate dust. The plug-in type ash discharge valve that opens horizontally is opened more fully, making the ash discharge smoother, and there is no obstruction and it is not easy to accumulate dust.

[0017] A DCS control system is provided, and all electric ash unloading valves 32 are connected to the DCS control system and controlled by the DCS control box 5. The DCS can be programmed to automatically unload the ash and control the opening and closing of each electric ash unloading valve 32. Specifically, after the bulk material belt is started, when all ash unloading valve operation boxes are turned to the automatic position, the DCS receives the automatic command, and automatically unloads the ash from the No. 1 ash unloading valve for 1 minute. After the No. 1 ash unloading is completed, the No. 2 ash unloading valve is automatically unloaded, and then the No. 31 ash unloading valve is unloaded. After the ash unloading is completed, the interval timing starts for 2 hours, and the next automatic ash unloading cycle is automatically entered after 2 hours. The automatic control of the ash unloading valve is realized, and the program is written according to the on-site ash unloading. The time can be changed according to the actual situation on the site, and the use is more flexible. Using the DCS control system to control the opening and closing of each electric ash unloading valve 32 not only reduces the manual work intensity, but also the cumbersome operation will not make mistakes, will not cause blockage due to untimely ash unloading, and will not cause air leakage due to the ash unloading valve being opened for too long or forgotten to be closed, which effectively eliminates the impact of these faults caused by improper operation.

[0018] Because the ash hoppers 3 are arranged side by side and square pipes 31 of the same specifications are arranged below, rows of square pipes will be at the same height, and the side walls can be in the same plane. A C-shaped ring 62 of the same height is arranged on the outer side wall of each square pipe 31, and a vibration transmission beam 63 is arranged through each of the multiple C-shaped rings 62. A vibrator 61 is arranged on the vibration transmission beam 63. The vibrator 61 is an electric vibrator, which is more convenient to use than a pneumatic vibrator. A filling pad is arranged in each C-shaped ring 62. With the help of the filling pad, the vibration transmission beam 63 can directly contact the outer wall of the square pipe 31. When there is no ash unloading task and cleaning and maintenance are required, the vibrator can be turned on, and the vibrator drives the vibration transmission beam 63 to vibrate. The vibration transmission beam 63 transmits the low-intensity vibration to each square pipe 31, and then drives each ash hopper to vibrate, cleans the dust residue contaminated on the side wall, solves the dust accumulation problem on the side wall, and reduces the workload of cleaning personnel for instrument maintenance and cleaning.

[0019] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A bulk material ash unloading system for a sintering machine, comprising a sintering machine (1), wherein an ash outlet at the bottom of the sintering machine (1) is connected to a large flue (2), a plurality of ash hoppers (3) of the same specifications are arranged side by side at the bottom of the large flue (2), and a bulk material belt (4) is arranged at the outlet below the ash hopper (3), characterized in that: The ash hopper (3) is a prism structure that is wide at the top and narrow at the bottom. A square pipe (31) is connected to the bottom of the ash hopper (3). An electric ash discharge valve (32) is arranged in the bottom outlet of the square pipe (31). A DCS control system is arranged. The electric ash discharge valve (32) of each ash hopper (3) is controlled by a DCS control box (5). A vibration cleaning device (6) is arranged on the outer side wall of each square pipe (31).

2. A bulk material unloading system for a sintering machine according to claim 1, characterized in that: The electric ash discharge valve (32) is an electric plug-in type ash discharge valve.

3. A bulk material unloading system for a sintering machine according to claim 2, characterized in that: The internal connection between the ash hopper (3) and the square pipe (31) adopts a round chamfer transition which is not easy to accumulate dust.

4. A bulk material unloading system for a sintering machine according to any one of claims 1 to 3, characterized in that: The vibration dust cleaning device (6) comprises a C-shaped ring (62) of the same height arranged on the outer wall of each square pipe (31), a vibration transmission beam (63) passing through each C-shaped ring (62), and a vibrator (61) arranged on the vibration transmission beam (63).

5. A bulk material unloading system for a sintering machine according to claim 4, characterized in that: A filling pad is arranged inside each C-shaped ring (62), so that the vibration transmission beam (63) is in direct contact with the outer side wall of the square pipe (31).

6. A bulk material ash unloading system for a sintering machine according to claim 5, characterized in that: The vibrator (61) is an electric vibrator.

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