CN215810001U

CN215810001U - Integrated air source heat pump dryer

Info

Publication number: CN215810001U
Application number: CN202122285421.1U
Authority: CN
Inventors: 黄永立; 唐军; 糜成瑞
Original assignee: Sanop New Energy Jiangsu Co ltd
Current assignee: Sanop New Energy Jiangsu Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-02-11
Anticipated expiration: 2031-09-22

Abstract

The utility model discloses an integrated air source heat pump dryer in the field of grain processing equipment, which comprises a dryer tower body, an evaporator, a compressor, a condenser, an expansion valve, a dryer, a blower, a dust remover and a hot water pump, wherein the evaporator, the compressor, the condenser and the expansion valve are connected to form a heat pump system; the drying device comprises a drying machine, a drying tower, a blower, an evaporator, a dryer and a dust remover, wherein the blower, the evaporator, the dryer and the dust remover are connected to form a drying air circulation system, a spiral preheating plate is arranged in the drying machine tower body from top to bottom, a slideway for grains to fall is arranged on the surface of the preheating plate, a water flow pipeline is arranged in the preheating plate, and the preheating plate, the condenser and a hot water pump are connected to form a hot water circulation system. The utility model heats the wet grains through the hot water circulating system to promote the water in the grains to be evaporated and discharged, and then the heated grains are swept by the drying air circulating system, so that the utility model has the characteristics of high heating efficiency and good drying effect, has large cold air drying dehydration amount, has better protection effect on the color, shape, texture and nutritive value of the grains, and is suitable for drying the grains.

Description

Integrated air source heat pump dryer

Technical Field

The utility model relates to the field of grain processing equipment, in particular to an integrated air source heat pump drying device.

Background

The concentrated and concentrated ripening of grains is concentrated, the newly harvested grains are huge in quantity and contain much moisture, concentrated airing is not easy to achieve, if the grains are not dried in time, the grains are easy to mildew and cause loss, the existing grain drying equipment usually adopts coal, oil, wood or straw as combustion materials, the materials can generate a large amount of smoke and waste gas in the combustion process, the environment and the dried grains are greatly polluted, the combustion is uncontrollable, and fire disasters are easy to cause safety accidents.

The heat pump drying technology is a novel grain drying technology, can furthest retain nutrient components in dried substances, does not damage the original structure of the dried substances, kills worm eggs through high-temperature treatment, removes moisture and meets the grain storage requirement. Because of large volume, a plurality of heat pump drying devices need to reserve installation positions in advance, the installation site is large, most of work needs to be completed on site, and the installation is complex; when the heat pump drying equipment works, a refrigerant is pressurized by a compressor to become high-temperature and high-pressure gas (the temperature is up to 100 ℃), the refrigerant is condensed and liquefied in a condenser to release high-temperature heat to heat air in a drying room, and sometimes the heat pump unit load overload is influenced by the external environment and the heating temperature may not reach the ideal heating temperature, so that the grain is necessary to be preheated before being dried in a dryer; in addition, in the traditional hot air drying operation, grains always enter the dryer from the same falling point, and can be accumulated in the dryer, the grains accumulated mutually are heated unevenly, so that the drying effect is poor, the single surface is heated unevenly during drying, and the grains are crushed to different degrees due to the collision between the grains and the dryer or the collision caused by stacking of the grains, so that the quality of a dried finished product is influenced; for some grains, especially for appearance, color and other textures, high temperature drying may cause certain influences, such as influencing the appearance of the product and reducing the mouthfeel experience.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide an integrated air source heat pump dryer, tail air discharged by heat pump drying equipment is efficiently utilized to preheat grains, so that the grains are uniformly heated, the drying efficiency is improved, the heat load of a heat pump drying unit is reduced, and meanwhile, the grains are kept with good texture such as appearance, color and the like, so that the grains are not easy to break and are environment-friendly.

The purpose of the utility model is realized by the following technical scheme: the integrated air source heat pump dryer comprises a dryer tower body, an evaporator, a compressor, a condenser, an expansion valve, a dryer, a blower, a dust remover and a hot water pump, wherein the dryer is arranged inside the dryer tower body; the first outlet of the evaporator, the inlet of the compressor, the outlet of the compressor, the first inlet of the condenser, the first outlet of the condenser, the expansion valve and the first inlet of the evaporator are sequentially connected to form a heat pump system; the drying machine is characterized in that an air outlet of the air feeder, a second inlet of the evaporator, a second outlet of the evaporator, the drying machine, the dust remover and an air inlet of the air feeder are sequentially connected to form a drying air circulation system, a hollow preheating plate is arranged in the drying machine tower body and is spirally distributed from top to bottom, a slideway for grain falling is arranged on the surface of the preheating plate, a water flow pipeline is arranged in a hollow interlayer of the preheating plate, and a water outlet of the preheating plate, a second inlet of the condenser, a second outlet of the condenser, a hot water pump and a water inlet of the preheating plate are sequentially connected to form a hot water circulation system.

When the utility model works, materials are circularly fed from a feeding hole at the upper end of a dryer tower body, the materials fall on a preheating plate to be heated and dried, then uniformly slide downwards along a slide way on the surface of the spiral preheating plate to enter a drying mechanism, moisture is removed by blowing dry cold air, an evaporator absorbs energy in damp and hot return air filtered by a dust remover and dehumidifies and dries the return air, a condenser releases the energy absorbed by the evaporator and the energy applied by a compressor to cooling water together to heat circulating cooling water, high-temperature hot water heated by the condenser is pumped into the preheating plate arranged in the dryer tower body through a hot water pump to heat damp grains flowing from the upper end of the dryer to promote the moisture in the grains to be evaporated and discharged, dry cold air heated by the evaporator is pumped into the dryer through a dehumidifying air feeder to quickly discharge the moisture or water vapor in the grains heated by the preheating plate, the purpose of drying the grains is achieved. Compared with the prior art, the method has the advantages that the energy in the damp-heat return air is fully utilized to heat the circulating cooling water, so that the moisture in the grains is evaporated and discharged, and the preheated grains are blown and dried by the dry cold air, so that the method has the characteristics of high heating efficiency and good drying effect; when the grains are fed, the grains roll uniformly in a spiral shape, so that accumulation and collision are avoided, the grains are ensured to be complete and not to be broken and to be heated uniformly, and the drying efficiency is improved; the drying and dewatering amount of the cold air is large, and the color, the shape, the texture and the nutritive value of the grains are well protected; the integrated air source heat pump dryer is arranged in a tower type, is simple in structure, easy to implement, small in occupied area and low in civil engineering cost.

Furthermore, the drying air circulation system and the heat pump system are arranged at the lower part of the dryer tower body, a water receiving disc is arranged below the evaporator, and is used for receiving condensed water generated by the evaporator and is connected with a condensed water drainage system.

Furthermore, a drying mechanism is arranged in the drying machine, and the air feeder pumps the drying cold air dehumidified by the evaporator to the drying mechanism to dry the grains.

Further, the heat pump system is arranged at the bottom of the dryer, so that the civil engineering cost is reduced.

Furthermore, the condenser is a shell-and-tube condenser, and the condensing efficiency is high.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the above figure, 1, a dryer tower body, 2 preheating plates, 201 preheating plate water inlet, 202 preheating plate water outlet, 3 drying mechanism, 4 evaporator, 401 evaporator first inlet, 402 evaporator first outlet, 403 evaporator second inlet, 404 evaporator second outlet, 5 water pan, 6 expansion valve, 7 compressor, 8 condenser, 801 condenser first inlet, 802 condenser first outlet, 803 condenser second inlet, 804 condenser second outlet, 9 hot water pump, 10 blower, 11 dust remover.

Detailed Description

As shown in fig. 1, the integrated air source heat pump dryer comprises a dryer tower body 1, an evaporator 4, a compressor 7, a condenser 8, an expansion valve 6, a dryer, a blower 10, a dust remover 11 and a hot water pump 9, wherein the dryer is arranged inside the dryer tower body 1; the first outlet 402 of the evaporator, the inlet of the compressor 7, the outlet of the compressor 7, the first inlet 801 of the condenser, the first outlet 802 of the condenser, the expansion valve 6 and the first inlet 401 of the evaporator are connected in sequence to form a heat pump system; the air outlet of the air blower 10, the second inlet 403 of the evaporator, the second outlet 404 of the evaporator, the dryer, the dust remover 11 and the air inlet of the air blower 10 are sequentially connected to form a drying air circulation system, a hollow preheating plate 2 is arranged inside the dryer tower body 1, the preheating plate 2 is spirally distributed from top to bottom, a slideway for grain falling is arranged on the surface of the preheating plate 2, a water flow pipeline is arranged in a hollow interlayer of the preheating plate 2, and a water outlet 202 of the preheating plate, a second inlet 803 of the condenser, a second outlet 804 of the condenser, a hot water pump 9 and a water inlet 201 of the preheating plate are sequentially connected to form a hot water circulation system.

The drying air circulation system and the heat pump system are arranged at the lower part of the dryer tower body 1, a water receiving tray 5 is arranged below the evaporator 4, and is used for receiving condensed water generated by the evaporator 4 and is connected with a condensed water drainage system.

The drying machine is internally provided with a drying mechanism 3, and a blower 10 pumps the drying cold air dehumidified by the evaporator 4 to the drying mechanism 3 to dry the grains.

The heat pump system is arranged at the bottom of the dryer, so that the civil engineering cost is reduced.

The condenser 8 is a shell-and-tube condenser, and has high condensation efficiency.

The integrated air source heat pump dryer is characterized in that a spiral preheating plate 2 distributed from top to bottom is arranged in a dryer tower body 1, the preheating plate 2 is arranged below a feed inlet at the upper end of the dryer tower body 1, a water flow pipeline is arranged in a hollow interlayer of the preheating plate 2, grains to be dried continuously enter from the feed inlet at the upper end of the dryer tower body 1, fall on the preheating plate 2 to be heated and dried, then uniformly slide downwards along a slide way on the surface of the spiral preheating plate 2 to enter a drying mechanism 3 at the lower position of the preheating plate 2, moisture is removed by blowing dry cold air, and a preheating plate water outlet 202, a condenser second inlet 803, a condenser second outlet 804, a hot water pump 9 and a preheating plate water inlet 201 are sequentially connected to form a hot water circulating system; the grains continuously slide down along with the downward sliding of the grains, the grains cannot be accumulated in one position in a centralized way, and the grains roll uniformly in the sliding process, so that the grains are prevented from being collided and accumulated to be broken, the grains are guaranteed to be heated uniformly, and the drying efficiency is improved; when drying operation is carried out, low-temperature low-pressure refrigerant steam enters the compressor 7 from an inlet of the compressor 7, is converted into high-temperature high-pressure steam through compression, enters the condenser 8 from a first inlet 801 of the condenser through a pipeline, is condensed by the condenser 8 to become liquid, flows out from a first outlet 802 of the condenser, is expanded and vaporized by the expansion valve 6 to become low-temperature low-pressure wet steam, flows into the evaporator 4 from a first inlet 401 of the evaporator, the evaporator 4 absorbs energy in the wet and hot return air filtered by the dust remover 11, the low-temperature low-pressure steam and the wet and hot return air complete heat exchange in the evaporator 4 and then flow out from a first outlet 402 of the evaporator, continues to be compressed by the compressor 7 to enter the condenser 8, and the cycle is repeated; high-temperature hot water heated by the condenser 8 is pumped to a water inlet 201 of the preheating plate by a hot water pump 9 through a water flow pipeline, flows out of a water outlet 202 of the preheating plate and returns to the condenser 8 for heating, and circularly and repeatedly heats wet grains flowing from the upper end of the dryer to promote the evaporation and discharge of water in the grains; the drying cold air dehumidified by the evaporator 4 is pumped to the drying mechanism 3 by the blower 10, and the moisture or the water vapor in the grains heated by the preheating plate 2 is rapidly discharged, so that the purpose of drying the grains is achieved.

The heat source of the high-temperature hot water is provided by the condenser 8 with the energy absorbed by the evaporator 4 and the energy applied by the compressor 7, the energy and the energy are jointly released to the cooling water, the circulating cooling water is heated, the obtained high-temperature hot water is pumped to the preheating plate 2 by the hot water pump 9 to heat the wet grains, so that the moisture in the grains is evaporated and discharged, the drying cold air dehumidified by the evaporator 4 is pumped to the drying mechanism 3 by the air blower 10, the grains heated by the preheating plate 2 are further swept, so that the moisture in the grains is rapidly discharged, the purpose of drying the grains is achieved, the drying device has the characteristics of high heating efficiency and good drying effect, the cold air drying dehydration amount is large, the protection effect on the color, shape, texture and nutritional value of the grains is good, and the drying device is particularly suitable for drying occasions with requirements on the appearance and texture of the grains.

The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.

Claims

1. The integrated air source heat pump dryer comprises a dryer tower body, an evaporator, a compressor, a condenser, an expansion valve, a dryer, a blower, a dust remover and a hot water pump, wherein the dryer is arranged inside the dryer tower body; the first outlet of the evaporator, the inlet of the compressor, the outlet of the compressor, the first inlet of the condenser, the first outlet of the condenser, the expansion valve and the first inlet of the evaporator are sequentially connected to form a heat pump system; forced draught blower air outlet, evaporimeter second import, evaporimeter second export, desiccator, dust remover, forced draught blower air intake connect gradually and form dry air circulation system, its characterized in that: the drying-machine tower body is internally provided with a hollow preheating plate which is spirally distributed from top to bottom, the surface of the preheating plate is provided with a slideway for grains to fall down, a water flow pipeline is arranged in a hollow interlayer of the preheating plate, and a water outlet of the preheating plate, a second inlet of the condenser, a second outlet of the condenser, a hot water pump and a water inlet of the preheating plate are sequentially connected to form a hot water circulation system.

2. The integrated air source heat pump dryer of claim 1, characterized in that: the drying air circulation system and the heat pump system are arranged at the lower part of the dryer tower body, and a water receiving tray is arranged below the evaporator and is connected with a condensed water drainage system.

3. The integrated air source heat pump dryer of claim 1, characterized in that: and a drying mechanism is arranged in the drying machine, and a drying cold air pump which is dehumidified by the evaporator is conveyed to the drying mechanism by the air feeder to dry the grains.

4. The integrated air source heat pump dryer of claim 1, characterized in that: the heat pump system is arranged at the bottom of the dryer.

5. The integrated air source heat pump dryer of claim 1, characterized in that: the condenser is a shell-and-tube condenser.