| After-sales Service: | 1 Year |
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| Warranty: | 12 Months |
| Type: | Oil Press Equipment |
| Customization: |
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| Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier 
Walnut kernels contain 60% - 70% oil , ranking first among all woody oils, known as the "oil depot on the tree." Walnut oil is known as oriental olive oil in the international market, which is as popular as olive oil.
Hot Pressing technology
Basic technology:
fresh walnut kernel→ peeling→ drying→pressing→filtering→ refining→quality walnut oil
Basic process
1. Pretreatment
The dried, pest-free and mildew-free fresh walnut kernels were pretreated and peeled by alkali method. The peeled walnut kernels were dried in an electrothermal oven at about 80 ºC until the moisture content was 2% ~ 3%. Then, the walnut kernels were fried at 130 ºC in order to promote the excretion of oil and the aroma of walnut oil, and stir-fry the walnut kernels until 80% of the walnut kernels were fried and cooked.
2.The walnut kernel was evenly and continuously sent to the screw press or hydraulic press for pressing, and the walnut oil was extruded under the action of pressure. The rotating speed of the screw shaft was 10 r / min.
The pressed crude oil was filtered by the oil filter to remove the solid impurities.
Cold pressing technology
Flowchart
fresh walnut kernel→ peeling→ drying→pressing→filtering→ refining→quality walnut oil
Basic process
1. Peach kernels are crushed into grains not larger than grain.
2.Wrap the cake in a cotton textile bag, put in the right amount of crushed walnut kernels, and wrap the walnut kernels into small bags (5 kg each is the most suitable)
3.Pressing To place the wrapped walnut kernel in a special hydraulic cylinder (there are many holes in the cylinder wall to flow oil), and each layer should be separated by a thin cotton pad to facilitate the outflow of oil between the layers. Then pressure, when the pressure rises to 4 MPA, starts to produce oil; when the pressure rises to 10 MPA, the amount of walnut oil flowing out is very little, which can relieve the discharge. The main point is that the smaller the package is, the higher the oil output rate is; the pressure should rise less and rise frequently, and the pressure should not be too high at one time, otherwise the oil is easy to be ejected in slurry or the oil channel between the oil materials is closed and contracted, but the oil output rate decreases.
Suppliers with verified business licenses
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