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CN-122015514-A - Waste heat recovery heat exchange structure of metal powder sintering furnace

CN122015514ACN 122015514 ACN122015514 ACN 122015514ACN-122015514-A

Abstract

The invention relates to the technical field of waste heat recovery, in particular to a waste heat recovery heat exchange structure of a metal powder sintering furnace, which comprises a heat energy extraction box arranged in the sintering furnace body and an air inlet pipeline communicated with the sintering furnace body, wherein one side of the heat energy extraction box is fixedly connected with a water inlet pipeline, the water inlet pipeline is connected with an external water source, the top of the heat energy extraction box is fixedly connected with an exhaust pipeline which is used for discharging steam, the exhaust pipeline comprises a conversion pipeline, the heat energy extraction box is arranged in the sintering furnace to absorb redundant heat in high temperature generated during the operation of the sintering furnace and discharge the redundant heat through the steam, the gas entering the sintering furnace is heated on one hand, the heat energy is converted into mechanical energy, then the mechanical energy is converted into electric energy for storage, the other part is provided for the structure to maintain the step of converting the heat energy into the mechanical energy, the recovered energy can be used for the operation of the sintering furnace body, and the recovery utilization rate is high.

Inventors

  • HU KANGKANG
  • LI YONGZHI
  • YING XIAOWEI

Assignees

  • 福建煌源金属有限公司

Dates

Publication Date
20260512
Application Date
20260408

Claims (8)

  1. 1. A heat exchange structure for recovering waste heat of a metal powder sintering furnace is characterized in that, The device comprises a heat energy extraction box (4) arranged in a sintering furnace body (1) and an air inlet pipeline (2) communicated with the sintering furnace body (1), wherein one side of the heat energy extraction box (4) is fixedly connected with a water inlet pipeline (5), the water inlet pipeline (5) is connected with an external water source, the top of the heat energy extraction box (4) is fixedly connected with an exhaust pipeline (3), and the exhaust pipeline (3) is used for exhausting water vapor; the exhaust pipeline (3) comprises a conversion pipeline (31), the conversion pipeline (31) is shaped like a Chinese character 'kou', and an energy conversion part (6) is connected inside a vertical section of the conversion pipeline (31) close to one side of the sintering furnace body (1) in a sliding manner; the energy conversion component (6) comprises an energy conversion mechanism I and an energy conversion mechanism II, wherein the energy conversion mechanism I is used for converting heat energy into mechanical energy, and the energy conversion mechanism II is used for converting mechanical energy into electric energy; The energy conversion mechanism I comprises a movable base rod (61) which is connected inside a vertical section of the conversion pipeline (31) close to the sintering furnace body (1) in a sliding way; An electric valve (33) is arranged in the lower horizontal section of the conversion pipeline (31), when the electric valve (33) is closed, water vapor is discharged from the upper horizontal section of the conversion pipeline (31) so as to enable the movable base rod (61) to move upwards, and when the electric valve (33) is opened, water vapor is discharged from the lower horizontal section of the conversion pipeline (31) so as to enable the movable base rod (61) to move downwards.
  2. 2. A heat exchange structure for recovering waste heat of a metal powder sintering furnace according to claim 1, wherein, The exhaust pipeline (3) further comprises a heat exchange tube (32), and the heat exchange tube (32) is spiral; the heat exchange tube (32) surrounds the air inlet pipeline (2) and is used for transferring heat of water vapor to the air inlet pipeline (2).
  3. 3. A heat exchange structure for recovering waste heat of a metal powder sintering furnace according to claim 1, wherein, The top of the movable base rod (61) is fixedly connected with a mounting seat, the mounting seat is arranged outside the exhaust pipeline (3), one side of the mounting seat is connected with a steering connecting rod (62) through a rotating shaft, and a cavity is formed in the steering connecting rod (62).
  4. 4. A heat exchange structure for recovering waste heat of a metal powder sintering furnace according to claim 3, wherein, The energy conversion mechanism II comprises a connecting rod (64) which is connected to the inside of the cavity of the steering connecting rod (62) in a sliding mode, a universal joint (66) is connected to one side of the connecting rod (64) in a rotating mode, a rotary disc (67) is connected to one side of the universal joint (66) in a rotating mode, and a rotor is fixedly connected to the center of the rotary disc (67).
  5. 5. A heat exchange structure for recovering waste heat of a metal powder sintering furnace according to claim 4, wherein, The steering connecting rod (62) is characterized in that a limiting rod (63) is arranged in the cavity of the steering connecting rod (62), limiting grooves (65) are formed in two sides of the receiving connecting rod (64), and the limiting grooves (65) are mutually matched with the limiting rod (63).
  6. 6. A heat exchange structure for recovering waste heat of a metal powder sintering furnace according to claim 5, wherein, A circular baffle (34) is fixedly connected to the bottom of the vertical section of the conversion pipeline (31) close to the sintering furnace body (1); the inner diameter of the circle baffle plate (34) is smaller than the diameter of the movable base rod (61).
  7. 7. A heat exchange structure for recovering waste heat of a metal powder sintering furnace according to claim 6, wherein, The bottom of the movable base rod (61) is provided with a transmitter, the positions of the upper node and the lower node of the vertical section of the conversion pipeline (31) close to one side of the sintering furnace body (1) are respectively provided with a receiver, and the transmitter moves to the same horizontal plane of the receivers and receives signals when the transmitters are contacted with the receivers; the electrically operated valve (33) is closed when the lower receiver receives a signal, and the electrically operated valve (33) is opened when the upper receiver receives a signal.
  8. 8. A heat exchange structure for recovering waste heat of a metal powder sintering furnace according to claim 7, wherein, A magnet is arranged at the bottom of the movable base rod (61), and an electromagnet is arranged in the circular baffle plate (34); When the movable base rod (61) moves downwards, the electromagnet in the circular baffle plate (34) is electrified, so that the speed of moving the movable base rod (61) downwards is increased.

Description

Waste heat recovery heat exchange structure of metal powder sintering furnace Technical Field The invention relates to the technical field of waste heat recovery, in particular to a waste heat recovery heat exchange structure of a metal powder sintering furnace. Background The sintering furnace is a professional device for densifying materials at high temperature, and unlike a common sintering furnace, the metal powder sintering furnace needs a high-quality furnace body sealing structure and materials, can accurately control and switch various gases, a special waste heat area and an advanced heating element layout, and can generate high temperature when in operation, the high temperature can lead the metal powder to start sintering, but a large amount of heat energy is consumed, no assistance can be provided for sintering operation, and the heat energy is recycled for reducing energy consumption. Currently, in the prior art, through retrieving, chinese patent application No. 202122460906.X discloses a vacuum sintering furnace with exhaust gas purification function, including the bottom plate, the left side fixedly connected with fritting furnace at bottom plate top, fritting furnace's top fixedly connected with roof, the top fixedly connected with heat preservation water tank of roof, heat preservation water tank's rear side intercommunication has the connection tuber pipe, one side that heat preservation water tank was kept away from to the connection tuber pipe communicates with fritting furnace's outlet duct, heat preservation water tank's inner chamber fixedly connected with heating pipe The scheme has the following defects that waste heat recovery is carried out on tail gas discharged from the sintering furnace, hot water is provided for life after recovery, the recovered energy utilization field is irrelevant to the field of the sintering furnace, and the recovery utilization rate is low. The object of the present application is to solve the above-mentioned problems. Disclosure of Invention Aiming at the defects existing in the prior art, the invention provides a waste heat recovery heat exchange structure of a metal powder sintering furnace, which can effectively solve the existing problems. In order to achieve the above purpose, the invention is realized by the following technical scheme: The invention provides a waste heat recovery heat exchange structure of a metal powder sintering furnace, which comprises a heat energy extraction box arranged in the sintering furnace body and an air inlet pipeline communicated with the sintering furnace body, wherein one side of the heat energy extraction box is fixedly connected with a water inlet pipeline, the water inlet pipeline is connected with an external water source, the top of the heat energy extraction box is fixedly connected with an exhaust pipeline used for discharging steam, the exhaust pipeline comprises a conversion pipeline, the conversion pipeline is in a shape of an opening, an energy conversion part is slidingly connected in a vertical section of the conversion pipeline close to one side of the sintering furnace body, the energy conversion part comprises a first energy conversion mechanism and a second energy conversion mechanism, the first energy conversion mechanism is used for converting heat energy into mechanical energy, the second energy conversion mechanism is used for converting mechanical energy into electric energy, the first energy conversion mechanism comprises a movable base rod which is slidingly connected in the vertical section of the conversion pipeline close to the sintering furnace body, an electric valve is arranged in a lower horizontal section of the conversion pipeline, when the electric valve is closed, the steam is discharged from the upper horizontal section of the conversion pipeline to the lower horizontal section, and the electric valve is moved to the lower horizontal section when the electric valve is opened, and the electric valve is moved to the lower horizontal section is opened, so that the steam is discharged from the lower horizontal section. The exhaust pipeline further comprises a heat exchange pipe which is spiral, and the heat exchange pipe surrounds the air inlet pipeline and is used for transmitting heat of water vapor to the air inlet pipeline. Further, the top of the movable base rod is fixedly connected with a mounting seat, the mounting seat is arranged outside the exhaust pipeline, one side of the mounting seat is connected with a steering connecting rod through a rotating shaft, and a cavity is formed in the steering connecting rod. Further, the second energy conversion mechanism comprises a connecting rod which is connected to the inside of the cavity of the steering connecting rod in a sliding mode, one side of the connecting rod is rotationally connected with a universal joint, one side of the universal joint is rotationally connected with a rotary disc, and the center of the rotary disc is