A walnut kernel peeling microwave treatment device

Abstract

The utility model discloses a walnut kernel peeling microwave processing device, including support, microwave heating box, knead and rub part, wind sieve pipe and fan, the microwave heating box is fixedly connected in the top of support, the microwave heating box is fixedly connected in the support, and the top is fixedly connected with the feed hopper, and the below is fixedly connected with the knead and rub part, the knead and rub part below is fixedly connected with wind sieve pipe, the wind sieve pipe is communicated with fan in one end of inclining downward. The utility model has the advantages that: the utility model through microwave heating effectively weakens the binding force of walnut seed coat and kernel, and then realizes efficient peeling through controllable mechanical knead and rub, finally utilizes the inclined wind sieve pipe and carries out the sorting according to the specific gravity difference, has the advantages of high processing efficiency, good peeling effect, high degree of automation, small damage to kernel.

Description

Technical Field

[0001] This utility model relates to the field of walnut kernel peeling technology, and in particular to a microwave processing device for peeling walnut kernels. Background Technology

[0002] Walnut kernels are the edible part of the walnut fruit, which is rich in nutrients and has a wide range of uses. The walnut skin on the surface of dried walnut kernels is usually removed by soaking in water. This method of removing the skin takes a long time and the effect is poor, which cannot meet the requirements of large-scale production. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a microwave processing device for peeling walnut kernels.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] A microwave processing device for peeling walnut kernels includes a support frame, a microwave heating chamber, a kneading section, an air sieve pipe, and a fan; the microwave heating chamber is fixedly connected to the top of the support frame; the microwave heating chamber is fixedly connected to the support frame, and a feeding hopper is fixedly connected to the top of the microwave heating chamber and fixedly connected to the kneading section at the bottom; an air sieve pipe is fixedly connected to the bottom of the kneading section; the downward inclined end of the air sieve pipe is connected to the fan.

[0006] Furthermore, a first valve is provided on the pipe between the microwave heating box and the feeding hopper; a second valve is provided on the pipe between the microwave heating box and the kneading section; a third valve is provided on the pipe between the kneading section and the air screen pipe; a controller is fixedly connected to the support; the controller is electrically connected to the microwave heating box, the kneading section, the fan, the first valve, the second valve and the third valve respectively.

[0007] Furthermore, the kneading part includes a housing, a motor, and kneading components; the output end of the motor extends into the middle of the housing and is fixedly connected to four evenly distributed kneading components; the kneading components include a connecting support plate, an arc-shaped plate, and a kneading plate; the arc-shaped plate is fixedly connected to the end of the support plate away from the motor output end; the kneading plate is detachably connected to the arched position of the arc-shaped plate.

[0008] Furthermore, the angle between the air screen pipe and the horizontal plane is 30°~40°.

[0009] Furthermore, the inclined upper end of the air screen pipe is connected to a walnut shell collection box via a pipe.

[0010] Furthermore, the lower end of the inclined air screen pipe is connected to a walnut kernel collection box via a pipe.

[0011] The beneficial effects of this utility model are:

[0012] This invention effectively weakens the bond between the walnut seed coat and the kernel through microwave heating, then achieves efficient peeling through controlled mechanical kneading, and finally sorts the kernels based on their specific gravity using an inclined air sieve. It has the advantages of high processing efficiency, good peeling effect, high degree of automation, and minimal damage to the kernels. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the kneading section.

[0015] In the picture,

[0016] 1-Support, 2-Microwave heating box, 3-Kneading section, 4-Air screen pipe, 5-Blower, 6-Feed hopper, 7-First valve, 8-Second valve, 9-Third valve, 10-Controller, 11-Walnut skin collection box, 12-Walnut skin collection box;

[0017] 301 - Housing, 302 - Motor, 303 - Kneading assembly;

[0018] 3031-Support plate, 3032-Curved plate, 3033-Rubbing plate. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] Reference Figure 1-2 As shown, a microwave processing device for peeling walnut kernels includes a support 1, a microwave heating box 2, a kneading section 3, an air sieve pipe 4, and a fan 5; the microwave heating box 2 is fixedly connected to the support 1; the microwave heating box 2 is fixedly connected to the support 1, and a feeding hopper 6 is fixedly connected to the top of the support 1, and the bottom of the support 1 is fixedly connected to the kneading section 3; the air sieve pipe 4 is fixedly connected to the bottom of the kneading section 3; the fan 5 is connected to the downward inclined end of the air sieve pipe 4.

[0021] It should be noted that the microwave heating box 2 is fixedly connected to the top of the support 1 and is used to microwave heat the walnut kernels, weakening the bond between the walnut shell and the kernel. A feed hopper 6 is fixedly connected to the top of the microwave heating box 2 to receive the walnut kernels with shells to be processed. The lower outlet of the microwave heating box 2 is fixedly connected to the inlet of the kneading section 3, allowing the microwave-treated walnut kernels to fall into the kneading section 3. The lower outlet of the kneading section 3 is fixedly connected to the inlet of the air sieve pipe 4. The air sieve pipe 4 is inclined, with its downward-sloping end (i.e., the air outlet) connected to the outlet of the fan 5. The fan 5 provides airflow to separate the walnut shells from the kernels after kneading.

[0022] A first valve 7 is installed on the connecting pipe between the feed hopper 6 and the microwave heating box 2 to control the flow of material from the feed hopper 6 into the microwave heating box 2. A second valve 8 is installed on the connecting pipe between the microwave heating box 2 and the kneading section 3 to control the flow of microwave-treated material from the microwave heating box 2 into the kneading section 3. A third valve 9 is installed on the connecting pipe between the kneading section 3 and the air screen pipe 4 to control the flow of kneaded material from the kneading section 3 into the air screen pipe 4. A controller 10 is fixedly installed on the bracket 1. This controller 10 is preferably a programmable logic controller (PLC) or a microprocessor control system. The controller 10 is electrically connected to the microwave heating box 2, the kneading section 3 (specifically its drive motor), the fan 5, the first valve 7, the second valve 8, and the third valve 9, respectively, to coordinate and control the entire device's workflow, parameter settings (such as microwave power, time, kneading speed, and airflow), and the opening and closing sequence of each valve. The controller 10 is prior art, and those skilled in the art can make a reasonable selection according to actual needs. The microwave heating chamber 2 is equipped with a microwave generator (such as a magnetron), waveguide, and stirrer (optional) to ensure uniform distribution of microwave energy. The chamber is preferably made of a metal inner liner and features an electromagnetic shielding layer and a door safety interlock device. The controller 10 can set and adjust the microwave power (e.g., adjustable from 500W to 1500W) and processing time (e.g., adjustable from 20 seconds to 180 seconds) to meet the processing needs of different varieties and moisture contents of walnut kernels.

[0023] The kneading section 3 includes a housing 301, a motor 302, and kneading components 303. The housing 301 forms a kneading chamber, with an inlet at the top connected to the microwave heating box 2 and an outlet at the bottom connected to the air filter pipe 4. The motor 302 is fixedly mounted outside the housing 301, and its output shaft passes through the side wall of the housing 301 and extends into the middle of the housing 301. At the end of the output shaft of the motor 302, four (preferably) kneading components 303 are fixedly connected, evenly distributed circumferentially. Of course, in other embodiments, the number of kneading components 303 can be selected as two, three, five, or more, depending on the processing volume and kneading effect requirements, and can be evenly or unevenly arranged circumferentially.

[0024] Each kneading assembly 303 includes a connecting support plate 3031, an arc-shaped plate 3032, and a kneading plate 3033. One end of the connecting support plate 3031 is fixedly connected to the output shaft of the motor 302, and the other end extends radially outward and is fixedly connected to the arc-shaped plate 3032. The arc-shaped plate 3032 has an arched curved surface structure facing the kneading direction. At the arched position (i.e., the highest point of the protrusion or the area nearby) of the arc-shaped plate 3032, the kneading plate 3033 is detachably installed by means such as bolt connection or snap connection. The kneading plate 3033 is preferably made of food-grade elastic material (such as silicone or rubber), and its working surface can be designed as a smooth surface or with a raised, textured structure to enhance the kneading effect and reduce damage to the walnut kernels. The detachable design of the kneading plate 3033 facilitates replacement or cleaning. When the motor 302 drives the kneading assembly 303 to rotate, the kneading plate 3033 and the inner wall of the shell 301 form a relative motion, kneading the microwave-treated walnut kernels that fall into it, so that the brittle seed coat is separated from the kernel.

[0025] The angle α between the central axis of the air sieve pipe 4 and the horizontal plane is set within the range of 30° to 40°. This angle range is preferred because an angle less than 30° may result in insufficient wind speed to effectively blow away lighter seed coats, or require greater wind pressure and energy consumption; an angle greater than 40° may cause the material to slide down too quickly, reducing its residence time in the effective wind area, affecting the sorting effect, and may also increase the risk of walnut kernels breaking due to collision with the pipe wall. Preferably, the angle α can be set to 35°.

[0026] The inclined upper end of the air sieve pipe 4 (i.e., the outlet for airflow and light materials) is connected to a walnut kernel peel collection box 11 via a pipe. The airflow generated by the blower 5 blows up the light walnut kernel peels in the kneaded mixture, and they eventually enter the walnut kernel peel collection box 11 through the outlet at the upper end of the air sieve pipe 4 for collection. Obviously, the collection box 11 is equipped with a vent and a filter to ensure airflow and prevent the walnut kernel peels from escaping from the walnut kernel peel collection box 11.

[0027] The lower end of the inclined air screen pipe 4 (i.e., the outlet for heavy materials) is connected to a walnut kernel collection box 12 via a pipe. After kneading, the heavier walnut kernels in the mixture slide down under the action of gravity and the inclined pipe wall, and finally enter the walnut kernel collection box 12 through the outlet at the lower end of the air screen pipe 4 for collection.

[0028] The inner wall of the air screen pipe 4 can be designed as a smooth surface, or equipped with structures such as guide plates and baffles to optimize airflow distribution and material movement trajectory, thereby improving sorting efficiency. The blower 5 is preferably a centrifugal blower or a high-pressure blower, and its air volume and air pressure can be set by the controller 10 or the blower's own adjustment device to adapt to different material quantities and required sorting intensities.

[0029] The walnut shell collection box 11 and the walnut kernel collection box 12 can be designed as drawers or doors for easy retrieval of the collected items. A cushioning layer (such as a soft pad or elastic mesh) can be installed at the bottom of the box to reduce impact damage when the walnut kernels fall in.

[0030] The working principle of this utility model:

[0031] During operation, the first valve 7 is opened, and walnut kernels with skins enter the microwave heating chamber 2 from the feed hopper 6. The first valve 7 is then closed. The controller 10 starts the microwave heating chamber 2 and microwaves the walnut kernels according to the set parameters. The heating time in this application is 30 seconds. After microwave treatment, the second valve 8 is opened, and the material falls into the kneading section 3. The second valve 8 is then closed. The controller 10 starts the motor 302 of the kneading section 3, driving the kneading assembly 303 to rotate for kneading treatment. The process stops after the set time. The third valve 9 is opened, and the kneaded mixture (walnut kernels + seed skin) falls into the air sieve pipe 4. The third valve 9 is then closed. The controller 10 starts the fan 5, and the airflow blows the seed skins to the upper outlet into the walnut skin collection box 11, while the walnut kernels slide to the lower outlet into the walnut kernel collection box 12. After processing, the product is removed from the walnut skin collection box 11 and the walnut kernel collection box 12, respectively.

[0032] This invention effectively weakens the bond between the walnut seed coat and the kernel through microwave heating, then achieves efficient peeling through controlled mechanical kneading, and finally sorts the kernels based on their specific gravity using an inclined air sieve. It has the advantages of high processing efficiency, good peeling effect, high degree of automation, and minimal damage to the kernels.

[0033] In this application, the tilt angle of the air screen pipe 4 can be adjusted outside the aforementioned preferred range of 30°-40° (e.g., 25°-45°), as long as effective sorting can be achieved. The material and surface structure of the kneading board 3033 can vary. The control logic of the controller 10 can also be programmed more complexly according to actual needs (e.g., by adding sensor feedback control). The installation position of the blower 5 can also be adjusted (e.g., by connecting it to the lower end of the air screen pipe 4 through a pipe to provide suction, instead of providing positive pressure blowing force at the lower end as shown in the figure).

[0034] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A microwave processing device for peeling walnut kernels, characterized in that: It includes a support (1), a microwave heating box (2), a kneading part (3), an air screen pipe (4), and a fan (5); the microwave heating box (2) is fixed above the support (1); the microwave heating box (2) is fixed on the support (1), and a feed hopper (6) is fixed above it and fixed below it to the kneading part (3); the air screen pipe (4) is fixed below the kneading part (3); the fan (5) is connected to one end of the air screen pipe (4) that is inclined downward.

2. The microwave processing device for peeling walnut kernels according to claim 1, characterized in that: A first valve (7) is provided on the pipe between the microwave heating box (2) and the feeding hopper (6); a second valve (8) is provided on the pipe between the microwave heating box (2) and the kneading part (3); a third valve (9) is provided on the pipe between the kneading part (3) and the air screen pipe (4); a controller (10) is fixedly connected to the support (1); the controller (10) is electrically connected to the microwave heating box (2), the kneading part (3), the fan (5), the first valve (7), the second valve (8) and the third valve (9) respectively.

3. The microwave processing device for peeling walnut kernels according to claim 2, characterized in that: The kneading part (3) includes a housing (301), a motor (302), and kneading components (303); the output end of the motor (302) extends into the middle of the housing (301) and is fixedly connected to four evenly distributed kneading components (303); the kneading component (303) includes a connecting support plate (3031), an arc plate (3032), and a kneading plate (3033); the arc plate (3032) is fixedly connected to one end of the support plate (3031) away from the output end of the motor (302); the kneading plate (3033) is detachably connected to the arched position of the arc plate (3032).

4. The microwave processing device for peeling walnut kernels according to claim 1, characterized in that: The angle between the air screen pipe (4) and the horizontal plane is 30°~40°.

5. The microwave processing device for peeling walnut kernels according to any one of claims 1 to 4, characterized in that: The upper end of the inclined air screen pipe (4) is connected to a walnut shell collection box (11) via a pipe.

6. The microwave processing device for peeling walnut kernels according to any one of claims 1 to 4, characterized in that: The lower end of the inclined air screen pipe (4) is connected to a walnut kernel collection box (12) via a pipe.

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