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CN-224230602-U - Vermicelli energy-saving drying system based on heat pump drying technology

CN224230602UCN 224230602 UCN224230602 UCN 224230602UCN-224230602-U

Abstract

The utility model discloses an energy-saving vermicelli drying system based on a heat pump drying technology, which relates to the technical field of food processing and is characterized by comprising a drying chamber, a plurality of groups of heat pump units, a heat exchange device and an exhaust pipe, wherein a conveying belt is arranged in the drying chamber, the heat pump units are arranged in the drying chamber and matched with the conveying belt, each heat pump unit is fixedly connected with an intelligent temperature control module, one end of the air inlet pipe is fixedly communicated with the heat exchange device, the other end of the air inlet pipe is fixedly communicated with the drying chamber, the heat exchange device is fixedly communicated with the exhaust pipe, the exhaust pipe is fixedly communicated with the drying chamber, and the heat exchange device is fixedly communicated with an exhaust chimney. The utility model aims to solve the technical problem of providing an energy-saving vermicelli drying system based on a heat pump drying technology, which is particularly suitable for a high-efficiency and low-consumption drying process of starch products. Waste heat is recovered through a heat pump technology, the temperature is accurately controlled, the energy consumption is obviously reduced, and the product quality is improved.

Inventors

  • CHI YONGJIANG
  • ZHANG HONGXIAN

Assignees

  • 烟台三金节能科技有限公司
  • 烟台欣铭晖节能科技有限公司

Dates

Publication Date
20260512
Application Date
20250606

Claims (6)

  1. 1. An energy-saving vermicelli drying system based on a heat pump drying technology is characterized by comprising: A drying chamber (6), wherein a conveying belt (8) is arranged in the drying chamber (6); A plurality of groups of heat pump units (3) are arranged in the drying chamber (6) and matched with the conveying belt (8), and each heat pump unit (3) is fixedly connected with an intelligent temperature control module respectively; The heat exchange device (4) is fixedly communicated with one end of the air inlet pipe (2), the other end of the air inlet pipe (2) is fixedly communicated with the drying chamber (6), the heat exchange device (4) is fixedly communicated with the exhaust pipe (18), the exhaust pipe (18) is fixedly communicated with the drying chamber (6), and the heat exchange device (4) is fixedly communicated with the discharge chimney (5).
  2. 2. The vermicelli energy-saving drying system based on the heat pump drying technology as set forth in claim 1, wherein the heat pump unit (3) comprises a compressor (11), an evaporator (10), a condenser (15), a throttle valve (16) and a heat exchanger (9), wherein an air suction port of the compressor (11) is connected with an outlet of the evaporator (10), an air discharge port of the compressor (11) is connected with an inlet of the condenser (15), an outlet of the condenser (15) is connected with an inlet of the throttle valve (16), and an outlet of the throttle valve (16) is connected with an inlet of the evaporator (10) to convey low-temperature low-pressure refrigerant to the evaporator.
  3. 3. The vermicelli energy-saving drying system based on the heat pump drying technology according to claim 2 is characterized in that an air inlet (12) and an air outlet (13) are formed in the shell of the heat pump unit (3).
  4. 4. The vermicelli energy-saving drying system based on the heat pump drying technology as set forth in claim 3, wherein the intelligent temperature control module comprises a temperature sensor (14) and a PLC (programmable logic controller) 17, the PLC (17) is installed in the heat pump unit (3), and the temperature sensor (14) is installed at a position of the heat pump unit (3) corresponding to the air outlet (13).
  5. 5. The vermicelli energy-saving drying system based on the heat pump drying technology according to claim 1 is characterized in that a feeding hole (1) and a discharging hole (7) are arranged in the drying chamber (6) corresponding to the conveying belt (8).
  6. 6. The vermicelli energy-saving drying system based on the heat pump drying technology according to claim 1 is characterized in that induced draft fans (19) are arranged on the air inlet pipe (2) and the air outlet pipe (18).

Description

Vermicelli energy-saving drying system based on heat pump drying technology Technical Field The utility model relates to the technical field of food processing, in particular to an energy-saving vermicelli drying system based on a heat pump drying technology. Background The traditional vermicelli drying process mainly relies on steam heating combined with induced draft fan for air supply, and has the following defects: (1) The energy consumption is high, the steam and electric energy consumption is high, the ton energy consumption cost reaches 674-808 yuan (as shown in table 1), and the energy utilization rate is less than 30%; TABLE 1 ton energy consumption and cost of vermicelli drying at present (2) The heat loss is large, high-temperature waste gas (50-95 ℃) is directly discharged, and the waste heat is not effectively recovered; (3) The temperature control precision is low, the temperature fluctuation (+ -5 ℃) is caused by manual adjustment, the fluctuation range of the water content of the product reaches 10.5% -12.5%, and the quality consistency is affected. TABLE 2 ton energy consumption and cost for vermicelli drying Using waste Heat recovery technology The existing waste heat recovery technology can save 25% -35% of steam (as shown in table 2), but relies on steam as a main heat source, so that the energy-saving potential is limited. Although the heat pump drying technology is applied in some fields, a practical scheme for drying vermicelli is not formed. Therefore, there is a need for a drying system that is simple in structure, energy efficient. Disclosure of utility model The utility model aims to solve the technical problem of providing an energy-saving vermicelli drying system based on a heat pump drying technology, which is particularly suitable for a high-efficiency and low-consumption drying process of starch products (such as vermicelli). Waste heat is recovered through a heat pump technology, the temperature is accurately controlled, the energy consumption is obviously reduced, and the product quality is improved. The utility model adopts the following technical scheme to realize the aim of the utility model: The vermicelli energy-saving drying system based on the heat pump drying technology is characterized by comprising a drying chamber, a plurality of groups of heat pump units, a heat exchange device and an exhaust pipe, wherein a conveying belt is arranged in the drying chamber, the heat pump units are arranged in the drying chamber and matched with the conveying belt, each heat pump unit is fixedly connected with an intelligent temperature control module, one end of an air inlet pipe is fixedly communicated with the drying chamber, the other end of the air inlet pipe is fixedly communicated with the drying chamber, the heat exchange device is fixedly communicated with the exhaust pipe, the exhaust pipe is fixedly communicated with the drying chamber, and the heat exchange device is fixedly communicated with an exhaust chimney. As a further limitation of the technical scheme, the heat pump unit comprises a compressor, an evaporator, a condenser, a throttle valve and a heat exchanger, wherein an air suction port of the compressor is connected with an outlet of the evaporator, an air discharge port of the compressor is connected with an inlet of the condenser, an outlet of the condenser is connected with an inlet of the throttle valve, an outlet of the throttle valve is connected with an inlet of the evaporator, and low-temperature low-pressure refrigerant is conveyed to the evaporator. As a further limitation of the technical scheme, the shell of the heat pump unit is provided with an air inlet and an air outlet. As a further limitation of the technical scheme, the intelligent temperature control module comprises a temperature sensor and a PLC controller, wherein the PLC controller is installed in the heat pump unit, and the temperature sensor is installed at the position, corresponding to the air outlet, of the heat pump unit. As a further limitation of the technical scheme, the drying chamber is provided with a feed inlet and a discharge outlet corresponding to the conveying belt. As a further limitation of the technical scheme, the air inlet pipe and the air outlet pipe are provided with induced draft fans. Compared with the related art, the vermicelli energy-saving drying system based on the heat pump drying technology has the following beneficial effects: (1) The utility model has the advantages of obvious energy saving, 39.7-46.4 percent of ton energy consumption cost reduction, annual saving of standard coal not less than 1200 tons (calculated by 5 production lines), emission reduction and environmental protection, 30 percent of annual carbon emission reduction, 98 percent of quality improvement, and accordance with GB 27132015 standard. (2) According to the utility model, the heat pump unit is used for recovering the wet waste heat and converting the wet waste heat into the dr