Rice microwave heat pump coupling drying device

Abstract

The invention is suitable for the technical field of rice drying, and provides a rice microwave heat pump coupling drying device which comprises a containing box, a drying cavity is formed in one end of the interior of the containing box, a hollow cylinder is rotationally arranged in an inner cavity of the drying cavity, and a plurality of hollow stirring blades communicate with the surface of the hollow cylinder; a plurality of drying micropores are formed in the surfaces of the hollow stirring blades, and a microwave generation assembly is arranged at the top of the inner wall of the drying cavity. According to the rice microwave heat pump coupling drying device, after the microwave generating assembly works in a matched mode, moisture molecules in rice can be directly heated to be rapidly evaporated, moisture is driven to migrate from the interior to the surface, hot air and microwaves act at the same time, surface moisture is removed through the hot air, and internal moisture migration is accelerated through the microwaves; and in the drying process, stirring is conducted through the hollow stirring blades, the drying uniformity of the rice can be improved, and the rice drying work is facilitated.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of rice drying, and particularly relates to a rice microwave heat pump coupling drying device. BACKGROUND

[0002] Rice is the food for people to survive. At present, rice in China is usually dried by sunning. However, the traditional drying method of rice needs to rely on fine weather to dry, and once the weather is bad, the rice cannot be dried, so that the damp rice is mildewed and smelly, which brings great trouble to people. In addition, the drying method by sunning cannot control the drying temperature of rice, and when the drying temperature is too high, the rice is easy to be broken during rice milling, resulting in incomplete rice grains, and when the drying temperature is not enough, the rice is easy to be mildewed during storage.

[0003] Chinese patent CN207570254U discloses a closed rice dryer. The technical scheme uses a closed dryer to dry rice instead of the traditional artificial sunning drying method of rice. In the case of bad weather, the rice can also be dried without being constrained by weather conditions, solving the problem that the user cannot dry the rice in bad weather.

[0004] However, the rice heat pump drying device can only dry the surface of the rice in advance by using hot air, and cannot quickly migrate and dry the moisture inside the rice, thereby reducing the drying efficiency of the rice. SUMMARY

[0005] The present application provides a rice microwave heat pump coupling drying device, which aims to solve the problem of the rice heat pump drying device that can only dry the surface of the rice in advance by using hot air, and has low drying efficiency.

[0006] The present application is implemented as follows: a rice microwave heat pump coupling drying device, comprising a containing box, one end of the inside of the containing box is provided with a drying cavity, the inner cavity of the drying cavity is rotatably provided with a hollow cylinder, the surface of the hollow cylinder is communicated with a plurality of hollow stirring blades, the surface of the hollow stirring blade is provided with a plurality of drying micropores, and the top of the inner wall of the drying cavity is provided with a microwave generating assembly.

[0007] The other end of the inside of the containing box is provided with a working cavity, the top of the other end of the inner wall of the drying cavity is provided with a suction hopper communicated with the inner cavity of the working cavity, the inside of the suction hopper is provided with a suction mechanism, and the inner cavity of the working cavity is provided with a heat pump mechanism communicated with the suction hopper and circulatingly injecting air flow into the inside of the hollow cylinder.

[0008] Preferably, the top of the containing box is vertically provided with a feeding hopper communicated with the inner cavity of the drying cavity, the top of the feeding hopper is provided with a protective cover plate, and the upper surface of the protective cover plate is fixedly connected with a lifting rod.

[0009] Preferably, one end surface of the containing box is fixedly connected with a motor, the output shaft of the motor is fixedly connected with a cross rod, the other end of the cross rod is rotatably extended to the inner cavity of the drying cavity and fixedly connected with one end of the hollow cylinder.

[0010] Preferably, a plurality of hollow stirring blades are uniformly and spacedly arranged along the surface of the hollow cylinder, and a plurality of drying micropores are uniformly and spacedly arranged along the surface of the hollow stirring blade.

[0011] Preferably, the air extraction mechanism comprises a support frame and a fan, the support frame is fixedly connected with the inside of the air extraction hopper, and the fan is fixedly connected to the surface of the support frame.

[0012] Preferably, the heat pump mechanism comprises a heat pump assembly and a hot air tank assembly, the heat pump assembly is fixedly connected to the bottom of the inner wall of the working cavity, the hot air tank assembly is fixedly connected to the side wall of the working cavity, the air outlet pipe of the hot air tank assembly is rotatably extended to the inside of the hollow cylinder, and the air extraction hopper, the heat pump assembly and the hot air tank assembly are sequentially communicated to convert the humid gas above the drying cavity into hot air and store the hot air in the hot air tank assembly.

[0013] Preferably, the drain outlet of the heat pump assembly is communicated with a drain pipe, the other end of the drain pipe is extended to the outside of the containing box, and a valve is arranged.

[0014] Preferably, one end of the front side surface of the containing box is provided with a discharging box door matched with the drying cavity, the surface of the discharging box door is provided with an observation window, the surface of the discharging box door is provided with a lock catch, the surface of the discharging box door is fixedly connected with a handle, the other end of the front side surface of the containing box is detachably provided with a maintenance cover plate matched with the lock catch through a plurality of bolts, the surface of the maintenance cover plate is detachably provided with a heat dissipation window, and the other end surface of the containing box is provided with a control panel.

[0015] Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the present application are that the present application provides a rice microwave heat pump coupled drying device.

[0017] (1) After the rice is put into the inner cavity of the drying chamber, the heat pump mechanism will inject hot air into the inner cavity of the hollow cylinder. Then, the motor will drive the hollow cylinder to rotate, which will drive multiple hollow stirring blades to rotate. During the rotation of the hollow stirring blades, hot air will be sprayed out through multiple drying micro-holes to dry the surface of the rice. When the microwave generator works, it can directly heat the water molecules in the rice, causing them to evaporate rapidly and drive the water to migrate from the inside to the surface. The hot air and microwave work simultaneously. The hot air removes the surface water, and the microwave accelerates the migration of internal water. The two work together to achieve efficient drying. In addition, the hollow stirring blades can agitate the rice during the drying process, which can improve the drying uniformity of the rice and facilitate the use of rice drying.

[0018] (2) After the fan starts working, it can draw the hot and humid air from the top of the drying chamber and inject it into the heat pump assembly. After the heat pump assembly removes the moisture from the hot and humid air, it retains the heat in the airflow and flows into the hot air box assembly. The hot air box assembly circulates the hot airflow into the hollow cylinder, reducing heat loss and thus reducing heat consumption during the use of the device, and improving the drying efficiency of rice. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the material box door and the observation window in this invention;

[0021] Figure 3 This is a front view of the present invention.

[0022] Figure 4 This is a front cross-sectional view of the present invention.

[0023] In the diagram: 1. Container box; 2. Drying chamber; 3. Working chamber; 4. Hollow cylinder; 5. Hollow stirring blade; 6. Drying micropores; 7. Crossbar; 8. Motor; 9. Hot air box assembly; 10. Heat pump assembly; 11. Exhaust hopper; 12. Drain pipe; 13. Valve; 14. Support frame; 15. Fan; 16. Feed hopper; 17. Protective cover plate; 18. Lifting rod; 19. Control panel; 20. Discharge box door; 21. Handle; 22. Observation window; 23. Lock; 24. Bolt; 25. Inspection cover plate; 26. Heat dissipation window; 27. Microwave generator assembly. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] First Embodiment

[0026] Please see Figures 1-4 The present invention provides a technical solution: a microwave heat pump coupled drying device for rice, including a receiving box, a drying chamber is provided at one end of the receiving box, a hollow cylinder is rotatably arranged in the inner cavity of the drying chamber, a plurality of hollow stirring blades are connected to the surface of the hollow cylinder, a plurality of drying micro holes are opened on the surface of the hollow stirring blades, and a microwave generating component is provided at the top of the inner wall of the drying chamber.

[0027] A working chamber is provided at the other end of the container. An air extraction hopper is provided at the top of the other end of the drying chamber, which is connected to the inner cavity of the working chamber. An air extraction mechanism is provided inside the air extraction hopper. A heat pump mechanism is provided in the inner cavity of the working chamber, which is connected to the air extraction hopper and circulates airflow into the hollow cylinder.

[0028] In this embodiment, after the rice is put into the inner cavity of the drying chamber, the heat pump mechanism injects hot air into the inner cavity of the hollow cylinder. Then, the motor drives the hollow cylinder to rotate, which in turn drives multiple hollow stirring blades to rotate. During the rotation of the hollow stirring blades, hot air is sprayed out through multiple drying micro-holes, which can dry the surface of the rice.

[0029] Once the microwave generator is operational, it can directly heat the moisture molecules in the rice, causing them to evaporate rapidly and driving the moisture to migrate from the inside to the surface. The hot air and microwaves work together, with the hot air removing surface moisture and the microwaves accelerating the migration of internal moisture. The coupled and synergistic effect of the two achieves efficient drying. Furthermore, the hollow stirring blades agitate the rice during the drying process, which improves the uniformity of drying and facilitates the use of rice drying equipment.

[0030] Furthermore, a feeding hopper is vertically arranged on the top of the receiving box and communicates with the inner cavity of the drying chamber. A protective cover is provided on the top of the feeding hopper, and a lifting rod is fixedly connected to the upper surface of the protective cover.

[0031] Furthermore, a motor is fixedly connected to one end face of the receiving box, and a crossbar is fixedly connected to the output shaft of the motor. The other end of the crossbar extends rotatably into the inner cavity of the drying chamber and is fixedly connected to one end of the hollow cylinder.

[0032] Furthermore, the plurality of hollow stirring blades are arranged in a uniformly spaced annular pattern along the surface of the hollow cylinder, and the plurality of drying micropores are arranged in a uniformly spaced annular pattern along the surface of the hollow stirring blades.

[0033] Second Embodiment

[0034] Please refer to Figure 4 Based on the same concept as the first embodiment above, the exhaust mechanism includes a support frame and a fan. The support frame is fixedly connected to the interior of the exhaust hopper, and the fan is fixedly connected to the surface of the support frame.

[0035] The heat pump mechanism includes a heat pump assembly and a hot air box assembly. The heat pump assembly is fixedly connected to the bottom of the inner wall of the working chamber, and the hot air box assembly is fixedly connected to the side wall of the working chamber.

[0036] The air outlet pipe of the hot air box assembly extends rotatably into the interior of the hollow cylinder. The air extraction hopper, the heat pump assembly, and the hot air box assembly are connected in sequence to convert the humid gas above the drying chamber into hot air and store it in the hot air box assembly.

[0037] In this embodiment, after the fan starts working, it can draw the hot and humid air from the top of the drying chamber and inject it into the heat pump assembly. The heat pump assembly removes the moisture from the hot and humid air, retains the heat in the airflow, and flows into the hot air box assembly. The hot air box assembly circulates the hot airflow into the hollow cylinder, reducing heat loss and thus reducing heat consumption during the use of the device, and improving the drying efficiency of rice.

[0038] Furthermore, the drain outlet of the heat pump component is connected to a drain pipe, the other end of which extends to the outside of the housing and is equipped with a valve. After the valve is opened, the water generated inside the heat pump component can be discharged through the drain pipe.

[0039] Furthermore, a feeding box door adapted to the drying chamber is provided at one end of the front side of the receiving box. The surface of the feeding box door is provided with an observation window, a latch, and a handle is fixedly connected to the surface of the feeding box door.

[0040] The other end of the front side of the container is provided with a maintenance cover plate that is compatible with the latch by several bolts. The surface of the maintenance cover plate is provided with a heat dissipation window. The other end of the container is provided with a control panel.

[0041] After the latch is unlocked, the feed box door can be opened by the handle to discharge the dried rice from the drying chamber. After removing several bolts, the inspection cover can be removed to facilitate the later inspection and maintenance of the heat pump mechanism.

[0042] The working principle and usage process of this invention: After the invention is installed, rice is placed into the inner cavity of the drying chamber. The fan then draws out the hot and humid air from the top of the drying chamber and injects it into the heat pump assembly. The heat pump assembly removes the moisture from the hot and humid air, retains the heat in the airflow, and flows into the hot air box assembly. The hot air box assembly circulates the hot airflow into the hollow cylinder, reducing heat loss. After the hot airflow is injected into the inner cavity of the hollow cylinder, the motor drives the hollow cylinder to rotate, which in turn drives multiple hollow stirring blades to rotate. During the rotation of the hollow stirring blades, hot airflow is sprayed out through multiple drying micro-holes, which can dry the surface of the rice. When the microwave generator works in conjunction with the microwave generator, it can directly heat the water molecules in the rice, causing them to evaporate rapidly and driving the water to migrate from the inside to the surface. The hot air and microwave work simultaneously. The hot air removes surface moisture, and the microwave accelerates the migration of internal moisture. The coupled and synergistic effect of the two achieves efficient drying.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A microwave heat pump coupled drying device for rice, comprising a receiving box (1), characterized in that: A drying chamber (2) is provided at one end of the container (1). A hollow cylinder (4) is rotatably provided in the inner cavity of the drying chamber (2). Several hollow stirring blades (5) are connected to the surface of the hollow cylinder (4). Several drying micro holes (6) are opened on the surface of the hollow stirring blades (5). A microwave generating component (27) is provided at the top of the inner wall of the drying chamber (2). The other end of the container (1) is provided with a working chamber (3). The top of the other end of the drying chamber (2) is provided with an exhaust hopper (11) that communicates with the inner cavity of the working chamber (3). An exhaust mechanism is provided inside the exhaust hopper (11). The inner cavity of the working chamber (3) is provided with a heat pump mechanism that communicates with the exhaust hopper (11) and circulates airflow into the hollow cylinder (4).

2. The rice microwave heat pump coupled drying device as described in claim 1, characterized in that: The top of the container (1) is vertically provided with a feeding hopper (16) that communicates with the inner cavity of the drying chamber (2). The top of the feeding hopper (16) is provided with a protective cover plate (17), and a lifting rod (18) is fixedly connected to the upper surface of the protective cover plate (17).

3. The microwave heat pump coupled drying device for rice as described in claim 1, characterized in that: A motor (8) is fixedly connected to one end face of the container (1), and a crossbar (7) is fixedly connected to the output shaft of the motor (8). The other end of the crossbar (7) extends rotatably into the inner cavity of the drying chamber (2) and is fixedly connected to one end of the hollow cylinder (4).

4. The rice microwave heat pump coupled drying device as described in claim 1, characterized in that: Multiple hollow stirring blades (5) are evenly spaced and distributed in a ring along the surface of the hollow cylinder (4), and multiple drying micropores (6) are evenly spaced and distributed along the surface of the hollow stirring blades (5).

5. The microwave heat pump coupled drying device for rice as described in claim 1, characterized in that: The exhaust mechanism includes a support frame (14) and a fan (15). The support frame (14) is fixedly connected to the interior of the exhaust hopper (11), and the fan (15) is fixedly connected to the surface of the support frame (14).

6. The microwave heat pump coupled drying device for rice as described in claim 1, characterized in that: The heat pump mechanism includes a heat pump assembly (10) and a hot air box assembly (9). The heat pump assembly (10) is fixedly connected to the bottom of the inner wall of the working chamber (3), and the hot air box assembly (9) is fixedly connected to the side wall of the working chamber (3). The air outlet pipe of the hot air box assembly (9) extends rotatably into the interior of the hollow cylinder (4). The air extraction hopper (11), the heat pump assembly (10) and the hot air box assembly (9) are connected in sequence to convert the humid gas above the drying chamber (2) into hot air and store it in the hot air box assembly (9).

7. The rice microwave heat pump coupled drying device as described in claim 6, characterized in that: The drain outlet of the heat pump assembly (10) is connected to a drain pipe (12), the other end of which extends to the outside of the housing (1) and is equipped with a valve (13).

8. The rice microwave heat pump coupled drying device as described in claim 1, characterized in that: One end of the front side of the container (1) is provided with a feeding box door (20) adapted to the drying chamber (2). The surface of the feeding box door (20) is provided with an observation window (22). The surface of the feeding box door (20) is provided with a latch (23). The surface of the feeding box door (20) is fixedly connected with a handle (21). The other end of the front side of the container (1) is provided with a maintenance cover plate (25) adapted to the latch (23) by several bolts (24). The surface of the maintenance cover plate (25) is provided with a heat dissipation window (26). The other end of the container (1) is provided with a control panel (19).

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