ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

About Oil Mill Machines

Updated on June 12, 2013

Technique of Oil Mill Machine

A grinding mill is an oil mill where the oil bearing seeds are bruised or crushed for extracting oil and the machines which are used in the oil mill are Oil Mill Machines. The machines which are used in an oil mill include the expeller press, dewatering screw press, belt filter, filter press etc.

The seeds which are used for oil extraction include the peanuts or linseed, olives etc. The expeller press machine is used for extraction of oil from these seeds and after extraction the remaining solid material is used as bio fuel or fertilizer or as a food.

Oil pressing or expeller pressing machine uses the process of extraction of oil from seeds or raw materials. Under high pressure the raw materials in a single step are squeezed. The typical raw materials like seeds, nuts and algae are used for extraction of food oils which are supplied in a continuous feed to the press machine.

The friction heats up the raw materials when pressed. Higher pressures are required for the harder nuts and the materials on pressing can exceed the level of temperatures to 49 degrees Centigrade or 120 degrees Fahrenheit.

A screw type machine is an expeller press which through a cavity like caged barrel presses the oil seeds. One side is used for entering the raw materials and the other side is used for the exit of the waste products. The machine uses continuous pressure and friction from the screw drives to compress and move the seed materials.

There are small openings through which the oil seeps and it does not allow the solids of the seed fibers to pass through the openings. The pressed seeds later are formed into cake like hardened structure which later from the machine is removed. The heat in the range of 60 to 99 degree Centigrade or 140 to 210 degree Fahrenheit is created by the pressure involved in the expeller press machine. Some mills use an apparatus for cooling or reducing the extreme temperatures which is effective in protecting some features of the extracted oil.

The expeller processing is unable to eliminate from the raw material the last trace of oil or liquid. The cake consists of significant amount of leftover oil after pressing. The cake in rural situations or in small scale industries has no importance and so finds significance in manufacturing of secondary products, in preparation of local dishes or for animal feed. By simple expelling, some raw materials do not discharge oil like the most common is rice bran. The commodities which provide no response to expelling the oil from these commodities are removed or final traces are extracted by the process of solvent extraction.

The expeller pressing machine consists of three essential designs which include the resistor teeth, interrupted screw and continuous screw. A continuous screw design was used by the former expeller pressing machines.

The compression screws were similar to the screws used in screw conveyor. In interrupted screw design, interruptions were in the compression screw fighting which was similar to screw conveyor consisting of a hanger. This resulted in consistent press cake and better dewatering. In resistor teeth design, the gap is fitted with these teeth which increases agitation and diminishes tendencies of co rotation.


    0 of 8192 characters used
    Post Comment

    No comments yet.


    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

    Show Details
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)