Physical method and equipment producing skinned walnut kernel

Abstract

A physical method producing skinned walnut kernels belongs to the walnut skinning technical field, and comprises the following steps: A, adding walnut kernels with skins into a first level roller oven, starting the machine and flowing hot air so as to enable the walnut kernel skin to be crispy, using rolling friction to separate crispy skin from the surface of the walnut kernel, thus obtaining walnut kernel with primary treatment; B, placing walnut kernels with primary treatment into a secondary roller oven, starting the machine and flowing into saturation wet vapour under controlled speed, wetting the endothelial of the walnut kernel, stopping the machine, and standing; C, starting the machine and controlling roller speed, flowing into hot air until the skin of the walnut kernel dries, contracts and becomes crispy, and using the friction force between the walnut kernel and the roller inner wall in a roller rotary process, thus removing skin of the walnut kernel, and obtaining finely processed walnut kernel. The invention also provides equipment using same method; the method and equipment can easily remove skins without affecting the walnut.

Description

technical field [0001] The invention belongs to the technical field of walnut peeling, and relates to a method and equipment for removing underwear from walnut kernels, in particular to a physical method and equipment for producing walnut kernels for removing underwear. The present invention is a purely physical method, using the different physical properties of pure walnut kernels and walnut kernel underwear, heating with hot air within 90°C to make the underwear brittle, and a small space is generated between the two due to rolling friction, and the underwear is passed through the spring hook, turned evenly and spaced Under the action of the board and hot air, the effect of taking off underwear is achieved, and the underwear is completely collected and utilized. After taking off the underwear, the integrity of the walnut kernel is high. This process is a purely physical method without any side effects, which protects the environment and saves resources. Background techniqu...

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Problems solved by technology

[0002] There is a huge market demand for walnut kernels to remove underwear. However, my country's processing technology has been backward for a long time. Using sodium oxychloride and hydrochloric acid to remove underwear not only affects product quality, but also damages the environment, and there are many problems such as heavy metal residues. It should be pointed out It is walnut kernel underwear is a kind of traditional Chinese medicine. The previous technology made it wasted in vain, which destroyed the environment and wasted resources.

[0003] A Chinese patent with application number 201310192711.9 discloses a secondary peeling system for coating walnut kernels. Through drying, air cooling, brush peeling, and stick grinding, the walnut kernels are cracked into granules, so as to realize the peeling of walnut kernels. The removal of kernel underwear, but this method has a low removal rate of underwear. During the process of grinding, the underwear will be squeezed and embedded in the walnut kernel, making it impossible to remove the underwear

[0004] Chinese patent CN 102763887 discloses a continuous drum high-pressure water jet walnut kernel peeling device. Its basic principle is to use high-pressure water flow to impact the surface of walnut kernels to remove the coating on the surface of walnut kernels. The consequence of this is, Walnut kernels will be wetted, which will affect the subsequent refining process

[0005] Chinese patent CN202019713 discloses a device for peeling walnut kernels. Its principle is to use a wet process for peeling. The object of peeling is that the soaked walnut kernels pass through a narrow and long channel under the action of high-pressure water flow, and are installed on the channel wall. The barbs of the walnut kernels are removed from the coating, which is also peeled by high-pressure water flow, which has a low peeling rate and affects the subsequent refining process

In addition to high-pressure water flushing, there are also pectinase, frozen underwear removal methods, ultrasonic underwear removal methods, and baking underwear removal methods. Some materials need to be added, and there are some problems, and the process is complicated.

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