Negative pressure type walnut shell-kernel separating device and method

Abstract

The invention provides a negative pressure type walnut shell-kernel separation device and a method, and belongs to the technical field of walnut shell breaking processing. The negative pressure type walnut shell-kernel separation device includes a feeding barrel, a separation track, a vacuum device, a walnut shell collecting device and a walnut kernel collecting device; the bottom of the feeding barrel communicates with the top of the separation track, the separation track is of a hollow two-end opening structure, and the inner bottom surface and the outer bottom surface of the separation track are at a preset angle; a first end opening of the separation track communicates with the vacuum device, a second end opening communicates with the atmosphere, the walnut shell collection device communicating with the separation track is arranged at the position, close to the first end opening, of the bottom of the separation track, and the walnut kernel collection device is arranged at the second end opening position; the pressure difference formed between the negative pressure generated by the vacuum device with the atmospheric pressure enables walnut shells and walnut kernels to move in the opposite direction; and a uniform and stable pressure difference inside the negative pressure type shell-kernel separation device is ensured, so that the high efficiency and precision separation ofthe walnut kernels and the walnut shells is realized.

Description

technical field [0001] The disclosure relates to the technical field of walnut shell breaking processing, in particular to a negative pressure type walnut shell kernel separation device and method. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] 86% of the fat in walnuts is unsaturated fatty acids. Walnuts are rich in copper, magnesium, potassium, vitamin B6, folic acid and vitamin B1. They also contain fiber, phosphorus, niacin, iron, vitamin B2 and pantothenic acid. In every 50 grams of walnuts, water accounts for 3.6%, and it also contains 7.2 grams of protein, 31 grams of fat and 9.2 grams of carbohydrates. The walnut shell is the endocarp, and the exocarp and mesocarp are green when immature and fall off when ripe. Walnut shell is a kind of granular filter material that has been processed by degreasing, crushing and screening. It ...

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Problems solved by technology

[0004] The inventors of the present disclosure have found that among the many methods of shelling walnuts to extract kernels, people often use manual methods to crack walnuts. The shell of walnuts is hard, thick, irregular, and the interior of the walnut is divided into many parts, and the kernels are brittle, which brings great difficulties to the process of shelling and extracting walnut kernels.

[0005] Some researchers have studied a self-positioning pre-shell co-directional spiral self-grading flexible extrusion walnut shelling device, which is integrated with multiple systems and has a compact structure, which not only reduces the manufacturing cost of the machine, but also reduces the operating time of the machine. The occupied area is conducive to the miniaturization and high efficiency of the machine, but the efficiency of this device is affected to a certain extent and there is still a certain gap between the quality requirements of walnut kernels, such as the whole kernel rate and manual shelling.

[0006] To sum up, there are many existing walnut shelling and kernel extraction techniques, which have their own advantages and serious shortcomings. Some devices only pursue one function and cause unsatisfactory effects in other aspects, so that it cannot be guaranteed. Whole Kernel Rate, Shell Breaking Rate and Shell Breaking Efficiency of Walnut

Although the emerging methods and equipment can realize the separation of shell and kernel, the equipment cost is high, the process is complicated, and the separation rate is low.

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