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A multi-layer belt drying system based on multi-stage heat pumps connected in series

A drying system and multi-layer belt technology, applied in progressive dryers, drying solid materials, drying, etc., can solve the problems of large return air temperature and humidity differences and difficulty in meeting requirements, and achieve the effect of increasing the supply air temperature

Active Publication Date: 2020-06-16
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the problem that the existing multi-layer belt drying system is difficult to meet the requirements when the temperature and humidity difference between the supply and return air is large, the present invention provides a multi-layer belt drying system based on multi-stage heat pumps connected in series

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  • A multi-layer belt drying system based on multi-stage heat pumps connected in series
  • A multi-layer belt drying system based on multi-stage heat pumps connected in series
  • A multi-layer belt drying system based on multi-stage heat pumps connected in series

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Embodiment Construction

[0034] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] In the description of the present invention, unless otherwise stated, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer" , "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship 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 Nothing indicating or implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the i...

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Abstract

The invention provides a multi-layer belt type drying system based on multi-stage heat pump serial connection. The multi-layer belt type drying system based on multi-stage heat pump serial connectioncomprises a drying chamber and a heat pump circulation subsystem, wherein an air inlet is formed in the bottom of the drying chamber; an air outlet is formed in the top of the drying chamber; multiplelayers of conveying net belts are located in the drying chamber, and the input end of the conveying net belt on the lower layer is connected with the output end of the adjacent conveying net belt onthe upper layer; the heat pump circulation subsystem comprises a circulation pipeline and a plurality of heat pump units, and the heat pump units are in serial connection; each heat pump unit comprises an evaporator, a compressor, a condenser and a throttling valve which form an independent circulation loop; and the two ends of the circulation pipe are connected with the air inlet and the air outlet of the drying chamber separately. According to the multi-layer belt type drying system based on multi-stage heat pump serial connection, by using the heat pump circulation subsystem formed by the multiple heat pump units in serial connection, the air is subjected to multi-stage cooling and dehumidification and multi-stage heating, and the problem that when the temperature and humidity differences of supplied return air are too large, an existing multi-layer belt type drying system is poor in effect and can not meet the requirements is solved.

Description

technical field [0001] The invention relates to the technical field of drying, more specifically, to a multi-layer belt drying system based on multi-stage heat pumps connected in series. Background technique [0002] At present, the multi-layer belt drying system is widely used in industry. The multi-layer belt drying system has the advantages of fast drying speed, less land occupation, and simple structure. It is used for drying materials such as flakes, strips, and granules with good air permeability. It is especially suitable for drying heat-sensitive materials with high efficiency. [0003] The heating and dehumidification system of the existing multi-layer belt drying system usually adopts heat pump system, heater and so on. Among them, the heat pump system generally adopts a single-stage heat pump system. The performance of a single-stage heat pump system is greatly affected by environmental factors such as temperature and humidity, especially in a low-temperature e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B15/12F26B23/10F26B25/00
Inventor 苑亚张振涛魏娟毛祥谢诚肖波游韶玮李博张冲李伟钊董鹏
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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