CN210689128U

CN210689128U - Walnut drying device with air energy heat pump

Info

Publication number: CN210689128U
Application number: CN201921067308.2U
Authority: CN
Inventors: 左廷春
Original assignee: Xiangyin Farmers' Professional Cooperative In Wuyin Township Weishan County
Current assignee: Xiangyin Farmers' Professional Cooperative In Wuyin Township Weishan County
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-06-05
Anticipated expiration: 2029-07-09

Abstract

The utility model discloses a walnut drying device with an air energy heat pump, which comprises a drying box, a first exhaust fan connected with the drying box, a hot air box connected with the first exhaust fan and an air source heat pump, wherein the air source heat pump is connected with the hot air box and heats the air flow in the hot air box; under the action of the first exhaust fan, hot air in the hot air box is blown into the drying box to dry walnuts. The utility model adopts the above structure, realize the hot-blast structure of stoving case supply, the stoving cost is low, and environmental protection and energy saving improves energy utilization rate, low cost.

Description

Walnut drying device with air energy heat pump

Technical Field

The utility model relates to a processing equipment technical field is planted to the walnut, concretely relates to walnut drying device with air energy heat pump.

Background

Walnut, also known as walnut, is a plant of the family juglandaceae. Walnut kernel contains rich nutrients, and is called four famous dry fruits in the world together with almond, cashew nut and hazelnut. The walnut after the peeling and cleaning treatment process needs to be dried in time, external moisture is very easy to permeate into the walnut, the walnut cannot be dried in time in a short period, the walnut is very easy to mildew and rot and deteriorate, the product quality is greatly influenced, and the time and the quality of drying in time play a key role in improving the commodity quality of the walnut during the storage period.

The common walnut drying adopts a hot air drying method, and the main modes comprise a fixed box type, a hanging box type and a trailer type. The most common of walnut drying device among the prior art is fixed box, and the temperature is generally about 45 ℃, and the stoving time is 1 ~ 2 days, adopts the motor to heat the air, leads to consuming electric energy big, stoving with high costs.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a walnut drying device with air energy heat pump has solved current walnut drying device and has consumed the problem that the electric energy is big, the stoving is with high costs.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the walnut drying device provided with the air energy heat pump comprises a drying box, a first exhaust fan connected with the drying box, a hot air box connected with the first exhaust fan and an air source heat pump, wherein the air source heat pump is connected with the hot air box and heats air flow in the hot air box; under the action of the first exhaust fan, hot air in the hot air box is blown into the drying box to dry walnuts.

Further, the air source heat pump comprises a compressor, a condenser connected with the compressor, an expansion valve connected with the condenser, an evaporator connected with the expansion valve, a first flow control valve and a second flow control valve; the condenser is arranged on the side wall of the hot air box; the compressor is connected with the air inlet of the condenser through a first flow control valve, and the air outlet of the condenser is connected with the expansion valve through a second flow control valve.

Furthermore, the hot air box comprises a hot air pipe, a hot air outer box sleeved outside the hot air pipe and a heat insulation layer, and the heat insulation layer is arranged between the hot air pipe and the hot air outer box; the condenser is positioned between the outer wall of the hot air pipe and the hot air outer box and is spirally wound on the outer wall of the hot air pipe; the air inlet of the hot-blast pipe is connected with the outside through a first electromagnetic valve, and the air outlet of the hot-blast pipe is connected with the first exhaust fan through a second electromagnetic valve.

Furthermore, a heat conducting glue is arranged at the connecting position of the condenser and the outer wall of the hot air pipe.

Furthermore, a snake-shaped air duct is formed inside the hot air pipe.

The hot air box further comprises a control device, and the hot air box further comprises a temperature sensor which is arranged at the position of an air outlet of the hot air pipe; the temperature sensor, the first electromagnetic valve, the second electromagnetic valve and the air source heat pump are respectively connected with a control device.

Further, the air outlet of the hot air pipe is connected with the air inlet of the drying box arranged at the bottom of the drying box through the first exhaust fan; and a drying box air outlet and a second exhaust fan are arranged at the top of the drying box, and the drying box air outlet is connected with the outside through the second exhaust fan.

And the air inlet of the hot air pipe is connected with the first electromagnetic valve through the drying and purifying box.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model adopts the cooperation of the air source heat pump and the hot air box to realize the structure of supplying hot air to the drying box, and the temperature of the hot air can be kept at about 45 ℃; the water content of the walnut with the shell can be controlled to be below 7.0 percent, and even the water content can be reduced to 4.2 percent. The utility model adopts the above structure, need not to consume too much electric energy, stoving is with low costs, and environmental protection and energy saving improves energy utilization rate, low cost.

2. The utility model adopts the structure of the temperature sensor and the control device, the control device controls the switch of the first electromagnetic valve and the second electromagnetic valve, and the control device controls the working state of the air source heat pump, thus realizing the heating of the air flow in the hot air box to the preset temperature range; and then, under the action of a first exhaust fan, hot air reaching a preset temperature range is blown into the drying box from the hot air box, so that automatic temperature control is realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive effort.

Fig. 1 is a schematic structural view of an embodiment of the walnut drying device provided with the air energy heat pump of the present invention, wherein an arrow in the figure is a hot air flow direction;

FIG. 2 is a schematic sectional view showing the construction of the hot air box of FIG. 1.

In the figure, a drying box 1; an air inlet 11 of the drying box; an air outlet 12 of the drying box; a horizontal conveyor belt 13; a first exhaust fan 2; a hot air box 3; a hot air duct 31; an air duct 311; a hot air outer case 32; an insulating layer 33; a temperature sensor 34; an air source heat pump 4; a compressor 41; a condenser 42; an expansion valve 43; an evaporator 44; a first flow rate control valve 45; a second flow control valve 46; a first solenoid valve 5; a second electromagnetic valve 6; a second exhaust fan 7; and a drying and purifying box 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The walnut drying device provided with the air-source heat pump as shown in the embodiment of fig. 1 and 2 comprises a drying box 1 for accommodating walnuts to be dried, a first exhaust fan 2 connected with the drying box 1, a hot air box 3 connected with the first exhaust fan 2 and an air-source heat pump 4, wherein the air-source heat pump 4 is connected with the hot air box 3 and heats air flow in the hot air box 3; under the action of the first exhaust fan 2, hot air in the hot air box 3 is blown into the drying box 1 to dry walnuts.

The air-source heat pump 4 includes a compressor 41, a condenser 42 connected to the compressor 41, an expansion valve 43 connected to the condenser 42, an evaporator 44 connected to the expansion valve 43, a first flow rate control valve 45, and a second flow rate control valve 46. The condenser 42 is provided on the side wall of the hot air box 3. The compressor 41 is connected to the inlet of the condenser 42 via a first flow control valve 45, and the outlet of the condenser 42 is connected to the expansion valve 43 via a second flow control valve 46.

The hot air box 3 comprises a hot air pipe 31, a hot air outer box 32 sleeved outside the hot air pipe 31 and a heat preservation layer 33, the heat preservation layer 33 is arranged between the hot air pipe 31 and the hot air outer box 32, and the heat preservation layer 33 can be an asbestos layer. The condenser 42 is located between the outer wall of the hot air duct 31 and the hot air outer box 32, and the condenser 42 is spirally wound around the outer wall of the hot air duct 31. The connecting position of the condenser 42 and the outer wall of the hot air pipe 31 is provided with heat conducting glue (not shown), so that the contact area of the condenser 42 and the hot air pipe 31 is increased, and the heat exchange efficiency is improved. The air inlet of the hot air pipe 31 is connected with the outside through a first electromagnetic valve 5, and the air outlet of the hot air pipe 31 is connected with a first exhaust fan 2 through a second electromagnetic valve 6. The hot air duct 31 forms a serpentine air passage 311 therein.

The present embodiment further comprises a control device (not shown), the hot air box 3 further comprises a temperature sensor 34, and the temperature sensor 34 is disposed at the air outlet of the hot air duct 31. The temperature sensor 34, the first electromagnetic valve 5, the second electromagnetic valve 6 and the air source heat pump 4 are respectively connected with a control device. The temperature sensor 34 transmits the sensed temperature to the control device, the control device controls the on and off of the first electromagnetic valve 5 and the second electromagnetic valve 6, and the control device controls the working state of the air source heat pump 4, so that the air flow in the hot air box 3 is heated to be within a preset temperature range; then, under the action of the first exhaust fan 2, hot air reaching a preset temperature range is blown into the drying box 1 from the hot air box 3, so that the walnuts in the drying box 1 are dried.

In this embodiment, the air outlet of the hot-blast main 31 is connected with the drying box air inlet 11 arranged at the bottom of the drying box 1 through the first exhaust fan 2, the top of the drying box 1 is provided with the drying box air outlet 12 and the second exhaust fan 7, and the drying box air outlet 12 is connected with the outside through the second exhaust fan 7. The drying box 1 is internally provided with a plurality of horizontal conveying belts 13 which are horizontally arranged and used for accommodating walnuts to be dried, and the plurality of horizontal conveying belts 13 are arranged in a staggered mode along the vertical direction.

As the further improvement to this embodiment, still including the dry purification case 8 that is used for absorbing the air moisture that gets into hot-blast main 31, the air intake of hot-blast main 31 passes through dry purification case 8 and first solenoid valve 5 and connects the external world, adopts the structure of dry purification case 8, avoids blowing in hot-blast too much air moisture that remains in stoving case 1, and air moisture is more then be unfavorable for guaranteeing the efficiency of drying the walnut.

Other structures of this embodiment are seen in the prior art.

The present invention is not limited to the above embodiment, and various modifications and variations of the present invention are also intended to be included within the scope of the claims and the equivalent technical scope of the present invention if they do not depart from the spirit and scope of the present invention.

Claims

1. Walnut drying device with air energy heat pump, its characterized in that: the hot air drying device comprises a drying box, a first exhaust fan connected with the drying box, a hot air box connected with the first exhaust fan and an air source heat pump, wherein the air source heat pump is connected with the hot air box and heats air flow in the hot air box; under the action of the first exhaust fan, hot air in the hot air box is blown into the drying box to dry walnuts.

2. The walnut drying device with the air energy heat pump as claimed in claim 1, wherein: the air source heat pump comprises a compressor, a condenser connected with the compressor, an expansion valve connected with the condenser, an evaporator connected with the expansion valve, a first flow control valve and a second flow control valve; the condenser is arranged on the side wall of the hot air box; the compressor is connected with the air inlet of the condenser through a first flow control valve, and the air outlet of the condenser is connected with the expansion valve through a second flow control valve.

3. The walnut drying device with the air energy heat pump as claimed in claim 2, wherein: the hot air box comprises a hot air pipe, a hot air outer box sleeved outside the hot air pipe and a heat insulation layer, and the heat insulation layer is arranged between the hot air pipe and the hot air outer box; the condenser is positioned between the outer wall of the hot air pipe and the hot air outer box and is spirally wound on the outer wall of the hot air pipe; the air inlet of the hot-blast pipe is connected with the outside through a first electromagnetic valve, and the air outlet of the hot-blast pipe is connected with the first exhaust fan through a second electromagnetic valve.

4. The walnut drying device with the air energy heat pump as claimed in claim 3, wherein: and heat-conducting glue is arranged at the connecting position of the condenser and the outer wall of the hot air pipe.

5. The walnut drying device with the air energy heat pump as claimed in claim 3, wherein: a snake-shaped air channel is formed inside the hot air pipe.

6. The walnut drying device provided with the air-source heat pump according to any one of claims 3 to 5, wherein: the hot air box also comprises a control device, and the temperature sensor is arranged at the air outlet of the hot air pipe; the temperature sensor, the first electromagnetic valve, the second electromagnetic valve and the air source heat pump are respectively connected with a control device.

7. The walnut drying device provided with the air-source heat pump according to any one of claims 3 to 5, wherein: the air outlet of the hot air pipe is connected with the air inlet of the drying box at the bottom of the drying box through the first exhaust fan; and a drying box air outlet and a second exhaust fan are arranged at the top of the drying box, and the drying box air outlet is connected with the outside through the second exhaust fan.

8. The walnut drying device provided with the air-source heat pump according to any one of claims 3 to 5, wherein: the air inlet of the hot air pipe is connected with the first electromagnetic valve through the drying and purifying box.