Afterheat boiler soot conveying and blowing assisting device

Abstract

The utility model discloses a waste heat boiler ash conveying blowing assisting device which comprises a middle bin used for discharging, a bin pump connected below the middle bin, a first horizontal pipe connected below the bin pump and used for conveying ash, a first bent pipe connected to the tail end of the first horizontal pipe, a vertical pipe connected to the tail end of the first bent pipe, and a second bent pipe connected to the tail end of the vertical pipe. The tail end of the second bent pipe is connected with a second horizontal pipe, and the tail end of the second horizontal pipe is connected with a cigarette ash bin used for storing cigarette ash. The head end of the soot blowing pipe is connected with the tail end of the first horizontal pipe, and the head end of the blowing assisting pipe is connected with the first bent pipe; the tail ends of the soot blowing pipe and the blowing assisting pipe are connected with a compressed air pipeline which is connected with a compressed air tank. By additionally arranging the blowing assisting device, the cigarette ash conveying capacity is improved, the problem of cigarette ash blockage in a cigarette ash conveying system is solved, and meanwhile when the dust content in smoke rises and the discharging particle size becomes large, the cigarette ash can be conveyed to the cigarette ash bin.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical devices, and in particular relates to a ash conveying and blowing-assisting device for a waste heat boiler. Background Art

[0002] The structure diagram of the waste heat boiler ash conveying equipment is as follows Figure 1 As shown, the ash from the waste heat boiler falls into the middle bin, which is connected to the bin pump. The bin pump and the ash bin are connected by an ash conveying pipe. The bin pump is located at the 0.0m plane, and the ash bin is located at the 20.0m plane. There is a large height difference between the bin pump and the ash bin. The ash from the bin pump is transported to the ash bin by compressed air.

[0003] When the dust content in the flue gas increases and the particle size of the discharged material becomes larger, the compressed air used for ash transportation is not sufficient to blow the ash to the ash bin. Utility Model Content

[0004] The utility model provides a waste heat boiler ash conveying and blowing device, aiming to solve the problem that when the dust content in the smoke increases and the discharge particle size becomes larger, the compressed wind used for conveying ash is insufficient to blow the ash to the ash bin.

[0005] To this end, the utility model adopts the following technical solutions:

[0006] A waste heat boiler ash conveying and blowing device comprises an intermediate bin for unloading, a bin pump is connected below the intermediate bin, a first horizontal pipe for conveying ash is connected below the bin pump, a first elbow is connected to the tail end of the first horizontal pipe, a vertical pipe is connected to the tail end of the first elbow, a second elbow is connected to the tail end of the vertical pipe, a second horizontal pipe is connected to the tail end of the second elbow, and an ash bin for storing ash is connected to the tail end of the second horizontal pipe;

[0007] It also includes a soot blowing pipe and an auxiliary blowing pipe. The head end of the soot blowing pipe is connected to the tail end of the first horizontal pipe, and the head end of the auxiliary blowing pipe is connected to the first elbow. The tail ends of the soot blowing pipe and the auxiliary blowing pipe are connected to the compressed air duct, and the compressed air duct is connected to the compressed air tank.

[0008] Furthermore, it also includes a pressure sensor and a compressed air control valve. The pressure sensor is arranged on the first horizontal pipe, and the compressed air control valve is arranged on the auxiliary blowing pipe. The pressure sensor feedback is connected to the compressed air control valve to adjust the opening and closing degree of the compressed air control valve according to the pressure size.

[0009] The beneficial effects of the utility model are:

[0010] The utility model is mainly used in the ash conveying system of the waste heat boiler. By adding a blowing device, not only the ash conveying capacity is improved, but also the problem of ash blockage in the ash conveying system is solved. At the same time, when the dust content in the flue gas increases and the discharge particle size becomes larger, the ash can also be conveyed to the ash bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the waste heat boiler ash conveying equipment;

[0012] Figure 2 This is a schematic diagram of the structure of the ash conveying and blowing-assisting device of the waste heat boiler;

[0013] In the figure: 1- auxiliary blowing pipe, 2- ash bin, 3- second horizontal pipe, 4- second elbow pipe, 5- vertical pipe, 6- first elbow pipe, 7- first horizontal pipe, 8- intermediate bin, 9- bin pump, 10- ash blowing pipe, 11- compressed air tank, 12- compressed air pipeline, 13- pressure sensor, 14- compressed air control valve. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0015] like Figure 1 and 2 As shown, a waste heat boiler ash conveying and blowing device comprises an intermediate bin 8 for unloading, a bin pump 9 is connected below the intermediate bin 8, a first horizontal pipe 7 for conveying ash is connected below the bin pump 9, a first elbow 6 is connected to the tail end of the first horizontal pipe 7, a vertical pipe 5 is connected to the tail end of the first elbow 6, a second elbow 4 is connected to the tail end of the vertical pipe 5, a second horizontal pipe 3 is connected to the tail end of the second elbow 4, and an ash bin 2 for storing ash is connected to the tail end of the second horizontal pipe 3;

[0016] It also includes a sootblowing pipe 10 and a blowing-assisting pipe 1. The head end of the sootblowing pipe 10 is connected to the tail end of the first horizontal pipe 7, and the head end of the blowing-assisting pipe 1 is connected to the first elbow 6. The tail ends of the sootblowing pipe 10 and the blowing-assisting pipe 1 are connected to a compressed air duct 12, and the compressed air duct 12 is connected to a compressed air tank 11.

[0017] It also includes a pressure sensor 13 and a compressed air control valve 14. The pressure sensor 13 is arranged on the first horizontal pipe 7, and the compressed air control valve 14 is arranged on the auxiliary blowing pipe 1. The pressure sensor 13 is connected to the compressed air control valve 14 for feedback, and the opening and closing degree of the compressed air control valve 14 is adjusted according to the pressure. During operation, larger particles of ash are more likely to accumulate at the first elbow 6, so the auxiliary blowing pipe 1 should be connected to the first elbow 6. When the auxiliary blowing pipe 1 is working, negative pressure is formed in the first elbow 6 and the vertical pipe 5, so as to solve the clogging problem of ash at the first elbow 6.

Claims

1. A waste heat boiler ash conveying and blowing device, characterized in that: It comprises an intermediate bin (8) for unloading materials, a bin pump (9) is connected below the intermediate bin (8), a first horizontal pipe (7) for conveying ash is connected below the bin pump (9), the tail end of the first horizontal pipe (7) is connected to a first curved pipe (6), the tail end of the first curved pipe (6) is connected to a vertical pipe (5), the tail end of the vertical pipe (5) is connected to a second curved pipe (4), the tail end of the second curved pipe (4) is connected to a second horizontal pipe (3), and the tail end of the second horizontal pipe (3) is connected to an ash bin (2) for storing ash; It also includes a soot blowing pipe (10) and a blowing-assisting pipe (1), wherein the head end of the soot blowing pipe (10) is connected to the tail end of the first horizontal pipe (7), and the head end of the blowing-assisting pipe (1) is connected to the first elbow (6); the tail ends of the soot blowing pipe (10) and the blowing-assisting pipe (1) are connected to a compressed air duct (12), and the compressed air duct (12) is connected to a compressed air tank (11).

2. The waste heat boiler ash conveying and blowing device according to claim 1 is characterized in that: It also includes a pressure sensor (13) and a compressed air control valve (14), wherein the pressure sensor (13) is arranged on the first horizontal pipe (7), and the compressed air control valve (14) is arranged on the auxiliary blowing pipe (1), and the pressure sensor (13) is feedback-connected to the compressed air control valve (14), and the opening and closing degree of the compressed air control valve (14) is adjusted according to the pressure.

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