Dual-purpose flue gas waste heat utilization system of heat supply unit

Abstract

The invention discloses a dual-purpose flue gas waste heat utilization system of a heat supply unit. The dual-purpose flue gas waste heat utilization system is provided with a box body, a movable shaft, a scraping plate, a fixed box, a filter screen and a connecting pipe, wherein an air inlet is formed in one side of the box body; the movable shaft is movably arranged in a dust removal cavity, and a paddle plate is fixed at one end of the movable shaft; the scraping plate is arranged on the side face of the movable shaft, and the other end of the movable shaft is sleeved with a cam; the fixed box is fixed on the box body on the outer side of a valve plate, and a water inlet pipe penetrates through the side surface of the fixed box; the filter screen is fixed to the inner wall of the dust removal cavity, and one end of a conveying pipe is fixed to the outer side of the dust removal cavity; and one end of the connecting pipe is fixedly connected with the other end of the conveying pipe. According to the dual-purpose flue gas waste heat utilization system of the heat supply unit, a large amount of smoke dust in flue gas can be purified, the smoke dust is prevented from entering the water storage cavity, pipeline blockage can be avoided, and meanwhile the heat recovery efficiency can be improved while the sealing performance of the waste heat recovery device is guaranteed.

Description

technical field [0001] The invention relates to the technical field of heating units, in particular to a dual-purpose flue gas waste heat utilization system for heating units. Background technique [0002] The heating unit refers to the heat exchange equipment that heats the boiler with gas, electricity or solar energy as fuel, and then generates heat and supplies heat. During the heating process of the boiler, a large amount of flue gas will be generated. The flue gas not only contains a large amount of harmful Smoke and dust also have relatively high heat. Recycling the heat in the flue gas is environmentally friendly and can save resources. However, the existing flue gas waste heat utilization devices still have the following shortcomings in the actual use process: [0003] 1. In the traditional flue gas waste heat utilization device, the flue gas contains a large amount of smoke and dust. During the flue gas transmission process, it is easy for the smoke and dust to ente...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a dual-purpose flue gas waste heat utilization system for heating units to solve the above-mentioned background technology. During the flue gas transmission process, it is easy for smoke and dust to enter the waste heat recovery device, causing pollution to the heated water. The heat recovery in the air is not complete enough, resulting in the problem of partial heat loss

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