Grinding type juice extractor

A grinding type juice extractor includes upper and lower grinding rings for providing both grinding and rolling effects during a process of extracting juice, and food materials are inputted for extracting juices, and the upper and lower grinding rings correspond to each other to define a clamping status, such that the inputted food material can be grinded, and a mechanism or method of applying two kinds of physical forces to the food material can be used for extracting the juice of the food material and maximizing the juice yield. In addition, a filter surface of a filter ring is provided for filtering the juice, and a juice outlet tube installed to a middle seat is provided for outputting the juice. Such juice extractor can improve the juice yield and reduce waste of resources.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a juice extractor, and more particularly to a juice extractor having the grinding and squeezing functions concurrently.

2. Description of the Related Art

To extract juice inside a food material by an effort-saving operation, a juice extractor or a juice machine (not limited for the use of extracting fruit juices only) is generally used, wherein most juice extractors have a press mechanism for pressing the food material (including but not limited to a fruit) and squeezing juice out from the food material, and most juice machines have a rotary knife for cutting and blending the food material into a paste form, such as squeezing the juice out from the fruit or blending the fruit into a fruit paste. Some dieters may add water and condiments to produce a fruit juice, and others may blend corps such as soybeans, yellow beans or vegetables with water and condiments by a high-speed rotating knife to produce drinks such as soya milk and vegetable juices. Regardless of the juice extractor or the juice machine, the main concern is to fully extract the juice from the food material without waste.

A household juice machine disclosed in P.R.C. Pat. Application No. 200520120453.4 comprises a machine base, a motor, a blending cup, a juice cup, a residue cup and a feeder, wherein the motor is installed onto the machine base, and the blending cup includes a planar gear knife disk installed therein, and the planar gear knife disk is coupled to a motor axle by its thread, and the feeder is covered onto the top of the blending cup, and teeth of the gear knife of the planar gear knife disk are arranged radially with an inclined angle in a clockwise direction. The juice machine having a knife disk structure provides high-speed cutting and squeezing, without requiring a pushing rod to complete the process of squeezing juice. However, the aforementioned structure of the knife disk has the following drawbacks. During a high-speed rotation of the knife disk, juices in large chunks of fruit flesh or vegetable are not squeezed out completely at a preliminary cutting stage, and the large chunks are spun out from the knife disk into the residue container at the periphery of the knife disk due to centrifugal force, and thus giving rise to a low juice yield and a waste of raw material.

SUMMARY OF THE INVENTION

In view of the shortcomings of the prior art, the inventor of the present invention based on years of experience in the related industry to conduct extensive researches and experiments, and finally developed a grinding type juice extractor in accordance with the present invention.

Therefore, it is a primary objective of the present invention to overcome the aforementioned shortcomings and deficiencies of the prior art by providing a grinding type juice extractor to improve the juice yield and save the raw materials.

To achieve the foregoing objective, the present invention provides a grinding type juice extractor comprising: a middle seat, with both ends in an open form, and a hollow area interconnected with a juice outlet tube and the hollow area; a filter member, being in a circular shape, contained inside the middle seat, and having a circular filter surface, and the circular filter member having a lower grinding ring with a rough surface disposed around an internal periphery of the circular filter member; a cover, installed to the top of the middle seat, and having an upper grinding ring installed to the bottom of the cover, and the upper grinding ring corresponding to the lower grinding ring to define a clamping status of an internal periphery of the filter member, and the cover having an opening passage with both penetrating ends and penetrated from the top of the cover into the circular hole of the upper grinding ring, and a push rod, movably inserted into the opening passage; and a main machine; having a link shaft passed through an opening formed at the bottom of the middle seat and coupled with the filter member in the hollow area.

In the present invention, the cover comprises: an opening passage with both penetrating ends and penetrated from the top of the cover to the circular hole of the upper grinding ring, such that food materials such as vegetables, fruits, yellow bean, and soybean can be inputted, and a push rod, movably inserted into the opening passage, for pressing the food material. With the upper grinding ring and the lower grinding ring installed corresponding to each other, a clamping status defined at the internal periphery of the filter ring can be used for defining a grinding status of the inputted food material to provide a way of squeezing and grinding the food material by a mechanism or method of applying two kinds of physical forces to maximize the juice yield of the food material and reduce a waste of resources. In addition, the filter surface of the filter ring is provided for extracting juice, and the juice is outputted from a juice outlet tube of the middle seat.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The technical characteristics of the present invention will become apparent with the detailed description of the preferred embodiments and the illustration of the related drawings.

With reference toFIGS. 1 and 2for an exploded view and a cross-sectional view of a grinding type juice extractor in accordance with a first preferred embodiment of the present invention respectively, the grinding type juice extractor comprises:

a middle seat1, with both ends in an open form, and having a hollow area11interconnected with a juice outlet tube10and the hollow area11;

a filter member9, being in a circular shape, contained inside the middle seat1, and having a circular filter surface90;

a lower grinding ring73, coupled to an internal circular periphery of the filter member9, and having a rough surface, such that a connecting element can be movably coupled to the filter member9, and the movable connecting elements facilities a replacement or removal of the lower grinding ring73, and a disk body731being formed on an internal side of the lower grinding ring73, and a plurality of alternate knife teeth731A formed at a top side of the disk body731;

a cover3, installed to the top of middle seat1, and having an upper grinding ring76movably installed to the bottom of the cover3by a connecting element, wherein the movable connecting element facilitates a replacement or a removal of the upper grinding ring76, and the upper grinding ring76and the lower grinding ring73corresponding to each other to define a clamping status of an internal periphery of the filter member9, and the cover3having an opening passage31with both penetrating ends and penetrated from the top of the upper grinding ring76of the cover3into the circular hole761, and a push rod4, movably inserted into the opening passage31; and

a main machine5, having a link shaft50passed through an opening formed at the bottom of the middle seat1and coupled with the filter member9in the hollow area11.

With reference toFIG. 3, a food material8, which is a fruit in this embodiment, can be inputted from the opening passage31of the cover3after the push rod4is movably removed, and the food material8will fall into the bottom position of the opening passage31, and then the push rod4is movably inserted into the opening passage31to press and squeeze the food material8in order to extract juice out from the food material8. In this preferred embodiment, a disk body731is formed on an internal side of the lower grinding ring73, and the disk body731includes a plurality of alternate knife teeth731A formed at a top side of the disk body731, the squeezing effect as well as the knife teeth731destructs the structure of the food material8to extract juice more effectively.

To extract juice, the present invention provides the upper grinding ring76and the lower grinding ring73corresponding to each other to define a clamping status at an internal periphery of the filter member9for grinding the inputted food material8. The mechanism or method of applying two kinds of physical forces for squeezing and grinding the food material to maximize the juice yield of the food material, and then a filter surface of the filter surface is provided for filtering the juice, and a juice outlet tube of the middle seat is provided for outputting the juice. Since the link shaft50of the main machine5is connected to the filter member9, the filter member9can be rotated to drive the lower grinding ring73connected to an internal circular periphery of the filter member9, so as to improve the juice yield and reduce a waste of resources.

With reference toFIGS. 4 and 5for a preferred embodiment of the present invention, the grinding type juice extractor further comprises:

a middle seat1, with both ends in an open form, and having a hollow area11interconnected with a juice outlet tube10and the hollow area11;

a filter member9, being in a circular shape, contained inside the middle seat1, and having a lower grinding ring73with a rough surface and coupled to an internal circular periphery of the filter member9, and linked integrally with the filter member9, wherein the lower grinding ring73is installed at a middle section on an internal side of the filter member9for dividing the filter member9into upper and lower filter rings91,92, and a step rim93is formed between the upper and lower filter rings91,92of the filter member9, and the lower grinding ring73is installed on a surface of the step rim93, and a disk body731is formed on a bottom side of the filter member9, and the disk body731includes a plurality of alternate knife teeth731A;

a cover3, installed to the top of middle seat1, and having an upper grinding ring76movably installed to the bottom of the cover3by a connecting element, and the upper grinding ring76and the lower grinding ring73corresponding to each other to define a clamping status of an internal periphery of the filter member9, and the cover3having an opening passage31with both penetrating ends and penetrated from the top of the upper grinding ring76of the cover3into the circular hole761, and a push rod4, movably inserted into the opening passage31, wherein the push rod4includes a plurality of protruding dots41formed at a bottom side of push rod4, and the cover3includes a guide groove32formed at a bottom side of the cover3and having its bottom interconnected with the outside, and the guide groove32and the upper filter ring91are interconnected internally; and

a main machine5, having a link shaft50passed through an opening formed at the bottom of the middle seat1and coupled with the filter member9in the hollow area11.

With reference toFIG. 6, the food material8, which is a fruit in this embodiment, can be inputted from the opening passage31of cover3after the push rod4is movably removed. With reference toFIG. 5as well, the food material8will fall into a bottom position of the opening passage31, and then the push rod4is movably inserted into the opening passage31to press the food material8and extract juice of the food material8, so that the juice inside the food material8can be extracted. In this preferred embodiment, a disk body731is formed on an internal side of the lower grinding ring73, and a plurality of alternate knife teeth731A formed on a top surface of the disk body731, the squeezing effect and the knife teeth731A will destruct the food material8, and the plurality of protruding dots41formed at the bottom side of the push rod4will improve the juice yield and reduce a waste of resources.

To extract the juice more effectively, the present invention provides the upper grinding ring76and the lower grinding ring73corresponding to each other to define a clamping status at an internal periphery of the filter member9for grinding the inputted food material8, and applies two kinds of physical forces to the food material8to maximize the juice yield of the food material8. In addition, the filter surface of the filter ring is provided for extracting juice, and the juice outlet tube10of the middle seat1is provided for outputting juice, and the link shaft50of the main machine5is connected to the filter member9, such that the filter member9can be rotated to drive the lower grinding ring73connected to the internal circular periphery of the filter member9, so as to improve the juice yield.

In this preferred embodiment of the present invention, the guide groove32formed at the bottom side of the cover3is interconnected to the outside, and the guide groove32corresponds to a containing cup2having an opening facing upward, and the guide groove32and the upper filter ring91are interconnected internally, so that the containing cup2can receive spilled juice and/or incompletely squeezed food material8, and the incompletely squeezed food material can be inputted to the juice extractor for a further extraction, so as to improve the juice yield.

The present invention improves over the prior art and complies with patent application requirements, and thus is duly filed for the patent application. While the invention has been described by device of specific embodiments, numerous modifications and variations could be made thereto by those generally skilled in the art without departing from the scope and spirit of the invention set forth in the claims.