Slag structure of a household oil press

Abstract

The invention discloses a slag-disintegrating structure of a domestic oil expeller and relates to the slag-disintegrating structure of a helix extrusion oil expeller, wherein the oil expeller comprises a squeezing chamber and a screw, the screw coaxially passes through the squeezing chamber, the tail end of the squeezing chamber is fixed with a slag-scraping element which comprises a plurality of convex teeth around a circle and towards the center, and the diameter of the circle surrounded by tops of the convex teeth is less than that of the inner wall of the squeezing chamber; the tail end of the screw is served as a cylindrical section, and the tops of the convex teeth are in clearance fit with the cylindrical section radially limited. Oil residues extruded by the screw are directly chopped by the convex teeth and the screw can be radially limited by the tops of the convex teeth, thus the slag-disintegrating structure has functions of slag disintegration, anti-swing and location, with a very simple structure.

Description

technical field [0001] The invention relates to the technical field of slag structures of household oil presses, in particular to a slag structure of a screw extrusion oil press. Background technique [0002] Household oil press is a new type of household appliance used to immediately squeeze out oil from peanuts, sesame and other raw materials. It has the advantages of simple operation, economical and practical, and pure and healthy oil. The enhancement of domestic oil presses is ushering in a huge market space. [0003] The core components of the screw extrusion oil press include a press chamber and a screw. After the billet enters the press chamber, it is pushed and extruded by the screw. If it is not cut and smashed, the storage space will be greatly wasted, and it is also not conducive to the subsequent utilization of the oil residue. On the other hand, theoretically speaking, the screw must rotate coaxially relative to the press chamber, but since there is a gap betw...

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Problems solved by technology

[0003] The core components of the screw extrusion oil press include a press chamber and a screw. After the billet enters the press chamber, it is pushed and extruded by the screw. If it is not cut and smashed, the storage space will be greatly wasted, and it will not be conducive to the subsequent utilization of oil residue

On the other hand, theoretically speaking, the screw must rotate coaxially relative to the press chamber, but since there is a gap between the screw and the press chamber for the oil residue to be extruded, the screw will inevitably oscillate radially during the pressing process. The harm caused by the radial swing of the screw is more serious: the friction loss between the screw and the press chamber will shorten the service life of the product, and the uneven distribution of the raw material in the press chamber not only affects the oil yield, but also due to the transmission of the raw material Blockage makes the motor lock up or even burn out

[0004] In the prior art, the more common slag structure is to fix the scraper to the tail end of the screw by hand-tightening the screw, and the scraper is driven by the rotation of the screw to break up the oil slag, such as Chinese patent CN203344351U, a scraper for household oil presses , in its public documentation image 3 As shown in the slag scraper, there are several problems with this structure of slag scraper: 1. In the process of installation and cleaning, the scraper needs to be disassembled before the screw can be taken out of the press chamber, and the operation is cumbersome; 2. The slag scraper The material area for punching the scraper is relatively large (larger than the outer diameter of the press chamber), and thumb screws are required, and the material cost is relatively high

Another example is the slag structure and preparation materials of a domestic oil press disclosed in Chinese patent application CN103722772A. The second scraper is fixed by screws. In addition to the same disadvantages as above, this kind of slag structure is more complicated and more costly to manufacture.

[0005] Because the domestic oil press market is in its infancy, there are still many problems in the product. For example, the radial swing of the screw is often ignored by the manufacturers. Many products do not have anti-swing functions, and the existing anti-swing structures are too complicated, such as Chinese patent CN203236738U discloses an anti-swing positioning structure of an oil press shaft and an oil press. The principle of the anti-swing structure disclosed in the document is: the tail end of the screw sticks out of the press chamber, and the tail end of the screw rod is covered Set up a sleeve that can relatively rotate and position the screw, and then connect and fix the sleeve on the press chamber, but the connection between the sleeve and the press chamber needs to be made into a hollow structure so that the oil residue can fall out of the hollow

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