阅读说明：本技术 一种新型除湿热泵干化系统 (Novel dehumidification heat pump mummification system ) 是由 汪闰红 李华芳 李芳� 于 2021-07-15 设计创作，主要内容包括：本发明属于除湿热泵干化工艺领域,具体公开了一种新型除湿热泵干化系统,包括干化箱、热水循环管路模块、热风循环冷凝除湿管路模块、热泵工质循环管路模块与干化物料布料及输送路线,所述干化箱通过法兰接口连接热水循环管路模块,且该热水循环管路上设有流量计；所述热水循环管路模块包括热水箱、热水循环泵、冷凝器、热水散热器、带流量计的管路,其中热水箱的端口经管道连通热水循环泵,热水循环泵连接冷凝器的输入端,由冷凝器向热水传热。本发明的除湿热泵干化系统采用循环热水传热、循环热风冷凝除湿两路独立的循环系统,实现热量的全部回收,无需向环境直排热量,同时大大提高了传热和除湿效率。(The invention belongs to the field of drying processes of dehumidification heat pumps, and particularly discloses a novel dehumidification heat pump drying system which comprises a drying box, a hot water circulation pipeline module, a hot air circulation condensation dehumidification pipeline module, a heat pump working medium circulation pipeline module, a drying material distribution and conveying route, wherein the drying box is connected with the hot water circulation pipeline module through a flange interface, and a flowmeter is arranged on the hot water circulation pipeline; the hot water circulation pipeline module comprises a hot water tank, a hot water circulating pump, a condenser, a hot water radiator and a pipeline with a flow meter, wherein the port of the hot water tank is communicated with the hot water circulating pump through a pipeline, the hot water circulating pump is connected with the input end of the condenser, and the condenser transfers heat to hot water. The dehumidification heat pump drying system provided by the invention adopts two independent circulation systems of circulating hot water heat transfer and circulating hot air condensation dehumidification, realizes the complete recovery of heat, does not need to directly discharge heat to the environment, and greatly improves the heat transfer efficiency and the dehumidification efficiency.)

1. A novel dehumidification heat pump drying system is characterized by comprising a drying box (14), a hot water circulation pipeline module, a hot air circulation condensation dehumidification pipeline module, a heat pump working medium circulation pipeline module, a drying material distribution and conveying line, wherein the drying box (14) is connected with the hot water circulation pipeline module through a flange interface, and a flowmeter is arranged on a heat exchange pipeline; the hot water circulation pipeline module comprises a hot water tank (1), a hot water circulation pump (2), a condenser (3), a hot water radiator (17) and a pipeline (20) with a flow meter, wherein a port of the hot water tank (1) is communicated with the hot water circulation pump (2) through a pipeline, the hot water circulation pump (2) is connected with an input end of the condenser (3), and heat is transferred to hot water by the condenser (3); the heat pump working medium circulation pipeline module comprises a working medium pipeline, and a compressor (4), a condenser (3), a liquid receiver (9), a working medium filter (8), an expansion valve (7), an evaporator (6) and a gas-liquid separator (5) which are sequentially arranged on the working medium pipeline, and working medium circulation is formed by connecting the working medium pipeline.

2. The novel dehumidification heat pump drying system of claim 1, wherein: the drying box comprises a hot water radiator (17), a multi-layer mesh belt conveyor (15) and an internal circulation fan (19), and is connected with the hot air external circulation condensation dehumidification module through an air pipe pipeline.

3. The novel dehumidification heat pump drying system of claim 1, wherein: the hot air circulating condensation dehumidification pipeline module comprises a dust remover (13), a heat exchanger (11), a circulating fan (12), an anemoscope (21), an evaporator 6, a secondary dehumidifier (10) and a circulating air pipeline, wherein the circulating air pipeline is connected to a working medium pipeline.

4. The novel dehumidification heat pump drying system of claim 3, wherein: be equipped with dust remover (13), heat exchanger (11), circulating fan (12), anemoscope (21), evaporimeter 6, second grade dehumidifier (10) on the heated air circulation condensation dehumidification pipeline, the circulating hot-blast of circulating air pipeline and through heat exchanger (11) heat transfer cooling once, then carry out the condensation dehumidification of secondary cooling in evaporimeter (6) department to after second grade dehumidifier (10) degree of depth defogging dehumidification, return mummification case (14) after heat exchanger (11) heat transfer intensifies again.

5. The novel dehumidification heat pump drying system of claim 1, wherein: the drying material conveying line comprises a distributing machine (18), a plurality of layers of conveying mesh belts (15) and a drying material discharging hopper (16), wherein the distributing machine (18) is arranged on the drying box (14), and the plurality of layers of conveying mesh belts (15) are arranged on the inner side of the distributing machine (18).

6. The novel dehumidification heat pump drying system of claim 5, wherein: the output end of the multilayer conveying mesh belt (15) corresponds to the dry material discharging hopper (16) and is communicated with the discharging hole of the drying box (14) through the dry material discharging hopper (16).

7. The novel dehumidification heat pump drying system of claim 3, wherein: the secondary dehumidifier (10) and the heat exchanger (11) are arranged along a circulating air pipeline, and the port of the heat exchanger (11) is connected with the drying box (14).

Technical Field

The invention relates to the field of drying processes of dehumidification heat pumps, in particular to a novel dehumidification heat pump drying system.

Background

The dehumidification heat pump drying process in the market mostly adopts hot air circulation drying, the heat conduction of the dehumidification heat pump drying process only depends on external circulation hot air to carry heat, and the dehumidification mostly adopts direct external discharge of humid hot air into the environment or external circulation hot air condensation dehumidification. The external circulation is the process that the hot air leaves the drying box, enters the external heat pump pipeline system for circulation and then returns to the drying box. The latent heat of the steam which is evaporated can not be recovered by directly discharging the damp and hot air, so the energy consumption is high, and the energy is saved unlike the energy saving of an external circulation hot air condensation dehumidification process. In the method, the defects existing in the external circulation hot air condensation dehumidification process are improved.

The traditional external circulation hot air condensation dehumidification process has three major defects. Firstly, the specific heat capacity of hot air is small, the density of hot air is small, the heat transfer efficiency is low and the air quantity is large by only depending on the hot air; secondly, the hot air has poor heat carrying capacity, and the energy carried by the heat pump system after being heated is far less than the latent heat released by the condensation of water vapor, so that the heat pump system needs to be provided with a cooling fan or cooling water to additionally discharge heat to the environment, thereby causing low heat recovery efficiency; thirdly, high wind speed in a pipeline system caused by large wind amount during circulation enables wind speed during condensation and dehumidification to be high, dehumidification effect is poor, tiny condensed water drops are brought back to the air again, and dust amount in the circulating wind is large due to overhigh wind speed, so that the evaporator and the condenser are prone to surface scaling, and heat transfer efficiency is reduced.

Disclosure of Invention

The invention aims to provide a novel dehumidification heat pump drying system to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a novel dehumidification heat pump drying system comprises a drying box, a hot water circulation pipeline module, a hot air circulation condensation dehumidification pipeline module, a heat pump working medium circulation pipeline module, a drying material distribution and conveying route, wherein the drying box is connected with the hot water circulation pipeline module through a flange interface, and a flowmeter is arranged on a heat exchange pipeline; the hot water circulation pipeline module comprises a hot water tank, a hot water circulating pump, a condenser, a hot water radiator and a pipeline with a flow meter, wherein a port of the hot water tank is communicated with the hot water circulating pump through a pipeline, the hot water circulating pump is connected with the input end of the condenser, and the condenser transfers heat to hot water; the heat pump working medium circulation pipeline module comprises a heat pump working medium pipeline, and a compressor, a condenser, a liquid receiver, a working medium filter, an expansion valve, an evaporator and a gas-liquid separator which are sequentially arranged on the working medium pipeline, and working medium circulation is formed by connecting the working medium pipelines.

Preferably, the circulating air pipeline module comprises a dust remover, a heat exchanger, a circulating fan, an anemograph, an evaporator, a secondary dehumidifier and a circulating air pipeline, wherein the circulating air pipeline is connected to the working medium pipeline.

Preferably, the circulating air pipeline is provided with a dust remover, a heat exchanger, a circulating fan, an anemoscope, an evaporator and a secondary dehumidifier, circulating hot air in the circulating air pipeline is subjected to primary heat exchange and cooling through the heat exchanger, secondary cooling is carried out at the evaporator after heat exchange and cooling, and deep demisting and dewatering are carried out through the secondary dehumidifier.

Preferably, the drying material conveying line comprises a distributing machine, a plurality of layers of conveying mesh belts and a dry material discharging hopper, wherein the distributing machine is arranged on the drying box, and the plurality of layers of conveying mesh belts are arranged on the inner side of the distributing machine.

Preferably, the output end of the multi-layer conveying mesh belt corresponds to the dry material discharging hopper and is communicated with the discharging port of the drying box through the dry material discharging hopper.

Preferably, the secondary dehumidifier and the heat exchanger are arranged along the circulating air pipeline, and the port of the heat exchanger is connected with the drying box.

Compared with the prior art, the invention has the beneficial effects that:

the dehumidification heat pump drying system provided by the invention adopts two independent circulation systems of circulating hot water heat transfer and circulating hot air condensation dehumidification, realizes the complete recovery of heat, does not need to directly discharge heat to the environment, greatly improves the heat transfer efficiency and reduces the circulating air quantity. The process is a single module process, and the actual equipment can be a plurality of modules connected in series, in parallel or in a series-parallel combination.

Drawings

Fig. 1 is a process flow diagram of a dehumidification heat pump drying system of the present invention.

In the figure: 1. a hot water tank; 2. a hot water circulation pump; 3. a condenser; 4. a compressor; 5. a gas-liquid separator; 6. an evaporator; 7. an expansion valve; 8. a working medium filter; 9. a liquid reservoir; 10. a secondary dehumidifier; 11. a heat exchanger; 12. an external circulation fan; 13. a dust remover; 14. a drying box; 15. a plurality of layers of conveying mesh belts; 16. a dry material discharging hopper; 17. a hot water radiator; 18. a material distributor; 19. an internal circulation fan; 20. a pipeline with a flow meter; 21. an anemometer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1, the present invention provides a technical solution: a novel dehumidification heat pump drying system comprises a drying box 14, a hot water circulation pipeline module, a hot air circulation condensation dehumidification pipeline module, a heat pump working medium circulation pipeline module, a drying material distribution and conveying route, wherein the drying box 14 is connected with the hot water circulation pipeline module through a flange interface, and a flowmeter is arranged on a heat exchange pipeline; the hot water circulation pipeline module comprises a hot water tank 1, a hot water circulation pump 2, a condenser 3, a hot water radiator 17 and a pipeline 20 with a flow meter, wherein a port of the hot water tank 1 is communicated with the hot water circulation pump 2 through a pipeline, the hot water circulation pump 2 is connected with an input end of the condenser 3, and heat is transferred to hot water by the condenser 3; the heat pump working medium circulation pipeline module comprises a working medium pipeline, and a compressor (4), a condenser (3), a liquid receiver (9), a working medium filter (8), an expansion valve (7), an evaporator (6) and a gas-liquid separator (5) which are sequentially arranged on the working medium pipeline, and working medium circulation is formed by connecting the working medium pipeline.

In this embodiment, the heated air circulation condensation dehumidification pipeline module includes a dust remover 13, a heat exchanger 11, an external circulation fan 12, an anemoscope 21, a secondary dehumidifier 10 and a circulating air pipeline, wherein the circulating air pipeline is connected to the working medium pipeline.

In this embodiment, a dust collector 13, a heat exchanger 11, a circulating fan 12, an anemoscope 21, an evaporator 6, an anemoscope 21, and a secondary dehumidifier 10 are disposed on the hot air circulating condensation dehumidification pipeline, the circulating hot air of the circulating air pipeline is cooled by primary heat exchange of the heat exchanger 11, and is cooled by secondary cooling condensation dehumidification at the evaporator 6 after heat exchange, and is deeply demisted and dehumidified by the secondary dehumidifier 10, and then is returned to the drying box 14 after being heated by heat exchange of the heat exchanger 11.

In this embodiment, the drying material conveying path includes a distributing machine 18, a multi-layer conveying mesh belt 15 and a dry material discharging hopper 16, wherein the distributing machine 18 is installed on the drying box 14, and the multi-layer conveying mesh belt 15 is installed inside the distributing machine 18.

In this embodiment, the drying box 14 is provided with an internal circulation fan 19 on the side wall.

In this embodiment, the output end of the multi-layer conveying mesh belt 15 corresponds to the dry material discharge hopper 16, and is communicated with the discharge port of the drying box 14 through the dry material discharge hopper 16.

In this embodiment, the secondary dehumidifier 10 and the heat exchanger 11 are arranged along a circulating air pipeline, and a port of the heat exchanger 11 is connected with the drying box 14.

In this embodiment, the circulating fan 12 can adjust the rotation speed in a variable frequency manner, and the variable frequency adjustment is realized according to the anemoscope 21 and the temperature and humidity in the drying box 14.

In this embodiment, the hot water radiator 17 may be an independent finned radiator, a heat pipe radiator, or a honeycomb heat exchanger, or directly utilize the inner wall of the drying box body to radiate heat.

In this embodiment, the evaporator 6 combines the condensation and dehumidification with the two-stage dehumidification of a dynamic filter screen, a static filter screen or an electrostatic demister, so that the dehumidification effect is greatly enhanced.

In the embodiment, the drying process of the invention still uses the heat pump technology, uses the heat pump condenser 3 to transfer heat to the circulating hot water to provide heat for the drying box 14, and uses the heat pump evaporator to cool and dehumidify, so as to realize the drying box circulating air dehumidifying and dehydrating drying.

In the embodiment, the gas discharged by the compressor 4 in the heat pump system is high-temperature high-pressure gas, and is changed into a high-pressure low-temperature gas-liquid mixture after heat exchange and water supply are carried out by the condenser 3, and the hot water carries heat to transfer heat to materials in the drying box 14 through a radiator to supply heat for evaporation and dehydration of the materials; the high-pressure low-temperature vapor-liquid mixture is changed into low-pressure low-temperature gas through the liquid receiver 9 and the expansion valve 7, the low-pressure low-temperature gas enters the evaporator 6 to be evaporated and absorb heat, the circulating hot air is cooled for the second time in the evaporator 6 after being cooled for the first time through the heat exchanger 11, and a large amount of condensation latent heat is released during condensation and dehydration. The working medium which absorbs the heat energy of the circulating hot air and the latent heat of condensation is converted into low-pressure gas to enter the compressor 4 to complete the circulation.

It is worth noting that: whole system is connected with power and total control button, and it realizes controlling it through total control button, because the equipment that control button matches is equipment commonly used, belongs to current mature technology, no longer gives unnecessary details its electric connection relation and specific circuit structure here.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.