CN113273879A - Spiral juicer - Google Patents

Abstract

The invention discloses a spiral juicer, the basic structure of which comprises: the pipe shell is horizontally arranged on the rack, and at least one downward surface of the pipe shell is a net surface; the screw assembly comprises a screw shaft and a screw arranged on the screw shaft; the feed hopper is positioned at the feed end of the pipe shell; the discharge hopper is positioned at the discharge end of the pipe shell; the juice bin is positioned below the net surface; the driving assembly is positioned at one end of the pipe shell; the spiral is provided with sub-spirals which are sequentially arranged in the axial direction of the spiral shaft, the volume of a single circle of the sub-spiral positioned at the front stage is relatively large, the volume of a single circle of the sub-spiral positioned at the rear stage is relatively small, and an expansion section is arranged between every two adjacent sub-spirals so as to expand the compressed material under decompression. According to the invention, juice in fruits and vegetables can be more effectively squeezed.

Description

Spiral juicer

Technical Field

The invention relates to a spiral juicer.

Background

Unlike household juicers, when a relatively large amount of processing such as fruit and vegetable juicing is required, a conventional choice is a screw juicer which is suitable for continuous production, in the fruit and vegetable juicing process, the fruit and vegetable juice is conveyed in a predetermined direction by a screw, at the tail end of the conveying direction, the juice in the fruit and vegetable is basically juiced and becomes slag, the fruit and vegetable juice can be discharged in a natural discharge mode at the tail end along the screw direction, and the juice falls off after passing through a net in the juicing process due to the fact that the shell of the screw is a net surface, so that the continuous production can be realized. At the same time, this also requires that the screw with which the screw juicer is fitted be in a horizontal or inclined position to receive juice on the underside of the generally transverse screw.

Chinese patent document CN112477240A discloses an agricultural fruit and vegetable continuous juicing device, which comprises a substantially horizontal barrel, a helical blade coaxial with the barrel is mounted in the barrel, a helical juice extractor is constructed according to the helical blade, and a squeezing box is further arranged at the front stage of the helical juice extractor. The spiral juicer disclosed in the patent document adopts the spiral blades with equal lead, and the juicing efficiency is relatively low mainly by means of the pushing action of the spiral blades.

The juicer disclosed in chinese patent document CN107405016A also includes a substantially horizontally disposed spiral casing, and the screw (i.e. the spiral blade) disposed in the spiral casing is a screw with variable lead, in the spiral conveying direction of the screw, the lead of the front stage is large, and the lead of the rear stage is small, because the spiral is a whole, under the same rotation angle, the pushing distance of the part with small lead is short, and the pushing distance of the part with large lead is long, so that besides the pushing action, there is a compression process on the whole, and a process of gradually squeezing fruits and vegetables, for example, is generated, and the squeezing and squeezing synergistic effect is relatively high.

The continuous variation in lead is a conventional arrangement of current screw juicers, which almost all use such a screw, where the constant pitch is almost discarded and, if used, divided into several segments, each segment being of constant pitch, the pitch between segments being progressively smaller in the direction of the material being conveyed.

It has been found that the squeezing of, for example, fruits and vegetables continues to squeeze most of the juice, but that squeezing also usually causes a blockage, making it easier for the juice located in the peripheral portion to be squeezed out, whereas juice located relatively inward is not easily squeezed out due to the blocking effect caused by squeezing, so that, for example, some juice still remains in the fruit and vegetable residues.

The inventor further researches and discovers that due to the pipe effect of the plant fiber, when the pressure is lost, the juice in the inner layer can rapidly permeate to the surface layer, and the natural condition is provided for further squeezing out the juice in fruits and vegetables.

Disclosure of Invention

In view of the above, the present invention provides a screw juicer capable of more effectively extracting juice from, for example, fruits and vegetables.

In an embodiment of the present invention, there is provided a screw juicer whose basic structure includes:

a frame;

the pipe shell is horizontally arranged on the rack, and at least one downward surface of the pipe shell is a net surface;

the spiral assembly comprises a spiral shaft and a spiral arranged on the spiral shaft, and the spiral shaft, the spiral and the pipe shell are coaxial;

the feed hopper is positioned at the feed end of the pipe shell;

the discharge hopper is positioned at the discharge end of the pipe shell;

the juice bin is positioned below the net surface to receive juice;

the driving assembly is positioned at one end of the pipe shell and used for driving the screw shaft to rotate;

the spiral is provided with sub-spirals which are sequentially arranged in the axial direction of the spiral shaft, the volume of a single circle of the sub-spiral positioned at the front stage is relatively large, the volume of a single circle of the sub-spiral positioned at the rear stage is relatively small, and an expansion section is arranged between every two adjacent sub-spirals so as to expand the compressed material under decompression.

Optionally, the structure for determining the volume of a single turn of the sub-helix is: the spiral shaft is a cylindrical rod, and the sub-spiral determines the volume of a single circle through the change of the pitch of the spiral.

Optionally, the dilating segment is:

a first structure being an expansion helix having a pitch greater than that of any of the sub-helices; or

And the second structure is an optical axis section.

Optionally, each expansion screw has a number of turns of not less than 1.5 and not more than 2

If the optical axis section is the optical axis section, the length of the optical axis section is not less than 0.8 times of the maximum screw pitch in the two adjacent sub-spirals and not more than 1.5 times of the maximum screw pitch in the two adjacent sub-spirals.

Optionally, the pitch of each sub-helix tapers from one end to the other.

Optionally, all of the sub-spirals exhibit overall a pitch that decreases from the feed end to the discharge end.

Optionally, the structure for determining the volume of a single turn of the sub-helix is: the sub-helix is a constant pitch helix, and the sub-helix determines the volume of a single turn through the change of the taper of the spiral shaft.

Optionally, a secondary filter screen is further provided below the screen surface.

Optionally, the juice bin is equipped with a cooling device.

Optionally, the cooling device comprises:

a water jacket installed on the juice bin; and

and a forced cooling circulation device for supplying water to the water jacket.

In the embodiment of the invention, the relative squeezing of the juice is realized based on the repeated squeezing manner, in that the continuous squeezing can lock part of juice in the deep layer of fruits and vegetables, if the repeated squeezing manner is adopted, a part of juice in the deep layer part is transferred to the outer layer, and the squeezing again can further squeeze part of the juice. In the embodiment of the invention, the structure for realizing the effect is that the spiral is divided into a plurality of sub-spirals, the expansion sections are arranged among the sub-spirals, when the material is pushed to the expansion sections, the material is expanded due to pressure loss, and deep juice is diffused to the outer layer due to the pipeline effect of fibers and is further squeezed again, so that the relative clean squeezing of the juice is facilitated.

Drawings

FIG. 1 is a schematic view of a spiral juicer according to an embodiment.

FIG. 2 is a schematic diagram of a spiral assembly according to an embodiment.

In the figure: 1. the automatic juicer comprises a support, 2 parts of a support, 3 parts of a discharge valve, 4 parts of a residue hopper, 5 parts of a cooling bin, 6 parts of a juice bin, 7 parts of a bearing seat, 8 parts of a bearing, 9 parts of a spiral shaft, 10 parts of a spiral, 11 parts of a primary filter plate, 12 parts of a secondary filter plate, 13 parts of a feeding hopper, 14 parts of the juice bin, 15 parts of a coupler, 16 parts of a reducer, 17 parts of a heat exchanger, 18 parts of a belt transmission mechanism, 19 parts of a rear-stage spiral, 20 parts of a transition spiral, 21 parts of a light shaft and 22 parts of a front-stage spiral.

Detailed Description

In the embodiment of the present invention, the screw rod (hereinafter, referred to as a screw assembly) of fig. 1 is an example in which the volume of a single-turn screw is changed by changing the taper of the screw shaft 9, fig. 2 is an example in which the volume of a single-turn screw is changed by changing the pitch of the screw, and the screw assembly of fig. 2 can be directly installed in the screw juicer of fig. 1.

In the embodiment of the invention, two key points are mainly designed, one is how to realize repeated extrusion, thereby improving the problem that deep layer juice generated by continuous extrusion is not easy to be squeezed out; another is the well-known phenomenon that during the juicing process the temperature of the juice obtained will rise, affecting the mouthfeel, although this problem is well known to the person skilled in the art, no solution has been proposed, at best to put ice cubes in the cup given to the customer to obtain a better mouthfeel, without an overall prior solution. It is known that when the overall problem of juice is high, the shelf life is also reduced. Meanwhile, the juice concentration is changed due to the ice block, and the taste is also affected.

The following description will first be made of a solution to the first problem:

first, it is known that the natural shrinking process of fruits is gradually inward from the surface, but the water loss ratio of fruits is not much different from that of fruits located inside and outside because the fruits are not squeezed and are connected between cells. When squeezed, the pressure blocks or blocks intercellular connections, so that the deep juice is not easily discharged, and therefore, the inventors believe that the difficulty of squeezing is increased by continuous squeezing.

Furthermore, conventionally, the current spiral juicer generally adopts a continuous spiral, and the pitch of the continuous spiral is gradually changed, so that the formed juicing process is a gradually pressurizing process, the deep juice of the juiced object is relatively smoothly discharged in the early stage, and the deep juice is more difficult to discharge in the later stage.

Referring to the attached figure 1 of the specification, a screw juicer shown in figure 1 comprises a frame assembled by a truss structure, which is shown as a bracket 2 in the figure, and a pipe shell is arranged on the bracket 2, namely the pipe shell of the screw juicer; the spiral assembly is arranged in the pipe shell and is driven by a motor matched with a speed reducer 16. The tail end of the pipe shell is provided with a slag hopper 4, and the lower part of the pipe shell is provided with a juice bin 6. The basic components of the screw juicer will be described one by one.

In fig. 1, a support 2 is mounted on a plant foundation using anchor bolts, the support 2 having a support 1. For relatively small juicers, the stand 2 may be directly seated on, for example, a factory base, which may also be equipped with casters for implementing, for example, a juice shop application oriented screw juicer, which tends to be relatively small in size and requires high mobility.

The tube shell is a necessary configuration of the screw juicer and is usually a circular tube shell structure, and at least the downward surface of the tube shell is a net surface, but in some applications, the tube shell is a net cage structure as a whole, and the wall surfaces of the tube shell are net surfaces.

The cartridge usually has seats at both ends, usually mounted on the housing by bolts, and since the screw of a screw juicer usually is not too long, no additional support is usually necessary in the middle.

The tube shell is provided with a spiral assembly, and a bearing seat 7 of a spiral shaft 9 of the spiral assembly can be positioned outside the tube shell or positioned on end covers at two ends of the tube shell.

The screw assembly comprises a screw shaft 9 and a screw 10 mounted on the screw shaft 9, the screw 10 is different from a screw thread for fastening, is more suitable for conveying materials, and has a relatively small thickness and a relatively large depth (i.e. a large diameter of the screw-a small diameter of the screw).

And as a general configuration the screw axis 9, the screw 10 and the envelope are coaxial, typically secured by e.g. end cap central holes at both ends of the envelope.

The shell generally has a feed opening on the upper side of one end and a discharge opening on the lower side of the other end, thereby defining a feed end having the feed opening and a discharge end having the discharge opening.

Furthermore, a feeding hopper 13 is arranged to be adapted to the feeding port, and the feeding hopper 13 is also called a feeding hopper and correspondingly located at the feeding end of the pipe shell and is generally mounted on the pipe shell in a flange connection manner.

The feeding funnel 13 is in fig. 1 of a cylindrical configuration, which may have a preliminary pressing configuration, such as knives, by which the fruit and vegetable is divided during feeding. Cut apart itself and just can have the juice to reserve, and cut apart the fruit vegetables unit that forms and be smaller, be favorable to promoting the juice effect in later stage more.

The preliminary pressing is also characterized in that, for example, fruits and vegetables are loaded into the feeding hopper 13, external force is required to press the fruits and vegetables, and a plunger is generally arranged on the feeding hopper 13, and the fruits and vegetables are cut into blocks by a cutter during the pressing process of the plunger. Here, the fruits and vegetables are loaded, and the plunger is put into the feeding hopper 13, so that the continuous loading of the fruits and vegetables is repeatedly realized.

Correspondingly, a discharge hopper is arranged at the discharge end of the pipe shell and is matched with the discharge hole, the discharge is actually slag, the discharge hopper is also called a slag hopper 4, and the slag hopper 4 mainly leads out fruit and vegetable residues formed after juice is extracted.

The juice produced during the juice extraction process leaks out through the mesh surface, so that a juice bin 6 is arranged below the mesh surface and is used for receiving the juice leaked out from the mesh surface.

In order to ensure that the juice does not splash outwards, a casing can be arranged outside the pipe shell, the casing is folded in the lower part of the pipe shell to form a bucket shape, and then the juice is collected and converged into the juice bin 6.

As a general configuration of the screw juicer, a driving assembly is required to be configured to drive the screw 10 to rotate, in the figure 1, the screw shaft 9 penetrates out of the right end of the tube shell and is connected with the speed reducer 16 through a coupling, the speed reducer 16 is connected with a motor (not shown in the figure) through the belt transmission mechanism 18, and the belt transmission mechanism 18 has strong impact resistance and better adaptability to impact caused by non-uniformity of filled materials in the juicing process.

In the embodiment of the present invention, the screw 10 has sub-screws, the sub-screws are sequentially arranged in the axial direction of the screw shaft 9, the volume of a single turn of the sub-screw located at the front stage is relatively large, the volume of a single turn of the sub-screw located at the rear stage is relatively small, and an expansion section is provided between adjacent sub-screws, so that the compressed material is expanded in a decompression manner. According to this structure, the material can be pushed by the spiral after getting into the spiral, and makes partial juice extruded out, gets into the expansion section after, because of the decompression, the material can slump, even if do not slump, also can be because of the decompression, and make the material ectonexine produce the juice exchange, specifically the outer diffusion of inlayer juice. After the material enters the next sub-spiral, the material can be extruded again, the process is repeated, the net squeezing rate of juice can be improved, and the residual juice in the slag is relatively less.

Regarding the change of the volume of a single turn of the sub-spiral, the conventional way is to adjust the pitch of the sub-spiral, and in the embodiment of the present invention, two ways are adopted, one is to adjust the pitch, as shown in fig. 2; the other is to adjust the taper of the screw, as shown in fig. 1.

Since the machining difficulty of the screw 10 is relatively large due to the adjustment of the taper of the screw shaft 9 of the screw, an example in which the manufacturing process is relatively simple to realize the volume change of a single turn of the screw by adjusting the screw pitch will be described below. Specifically, the structure for determining the volume of a single turn of the sub-helix is as follows: the spiral shaft 9 is a cylindrical rod, the sub-spirals determine the volume of a single circle through the change of the thread pitch, the spiral positioned on the right side is a front-stage spiral 22, the spiral positioned on the left side is a rear-stage spiral 19, the thread pitch difference between the front-stage spiral and the rear-stage spiral is larger, the thread pitch is gradually changed in the same sub-spiral, the gradual change direction is gradually reduced from the feeding end to the discharging end, and therefore the volume of the single-circle spiral is gradually reduced from the right end to the left end in the figure 2.

More importantly, the subspirals are represented in fig. 2 as optical axis segments, i.e., the surface thereof has no helices, and in this configuration, the collapsed material is biased downward, is crowded forward (left end) under axial force, and is reamed again at the next subspiral.

The relatively preferred mechanism is an expanding screw structure, and the expanding screw can still realize hinging instead of pushing, so that the relative continuity of material conveying can be maintained. As a technical requirement, if the expansion screw is adopted, the screw pitch of the expansion screw is larger than that of any sub-screw, the pressure of the material is lost after the material reaches the expansion screw, and the juice in the inner layer of the material is diffused to the outer layer.

Further, in order to ensure relative sufficiency of diffusion, each expansion spiral has the number of turns of not less than 1.5 and not more than 2

And if the optical axis section 21 is adopted, the length of the optical axis section 21 is not less than 0.8 times of the maximum thread pitch in the two adjacent sub-spirals and not more than 1.5 times of the maximum thread pitch in the two adjacent sub-spirals.

Preferably, the pitch of each sub-helix tapers from one end, which is obviously referred to as the feed end, to the other end, which is obviously referred to as the discharge end.

As is evident from the comparison in fig. 2, all the sub-spirals exhibit overall a decreasing pitch from the feed end to the discharge end, corresponding to the fact that the spiral 10, whose pitch varies continuously, is cut into several segments and then separated by the beam-axis segment 21.

Alternatively, the sub-screw is a constant pitch screw, and in order to realize the volume change of the single-turn screw, the sub-screw determines the volume of the single turn through the change of the taper of the screw shaft 9, in particular referring to the screw shaft 9 in the drawing 1 of the specification, the screw shaft 9 is provided with two sections, the section on the right is a cylindrical shaft, the section on the left is a tapered shaft, the drawing is only a schematic structure, and in order to realize the aforementioned function, the tapered shafts in the drawing can be provided in plurality, so as to realize the repeated extrusion of the material.

In order to ensure that the juice is sufficiently drained, a secondary strainer, such as the secondary strainer 12 shown in fig. 1, is provided under the mesh surface, i.e. the mesh surface has a relatively poor filtering capacity, but facilitates rapid drainage of the juice, especially when the material is under pressure during repeated squeezing, which causes a portion of the juice to be sucked back into the material, and in view of this, the squeezed juice should be drained as quickly as possible, which requires that the primary squeezed juice be drained as quickly as possible, the primary strainer 11 shown in the drawings, i.e. the aforementioned mesh surface, has relatively large mesh openings. However, the larger mesh openings may allow some fruit and vegetable residues to pass through the mesh, and therefore, a secondary filter plate 12 with smaller mesh openings is also arranged below the primary filter plate 11.

Regarding the second problem, it is known that the temperature of the juice is raised after juicing, which affects the taste, and for this reason, the juice bin 6 is equipped with a cooling device, the target temperature for cooling is controlled to 20 ℃ ± 5 ℃, and the temperature required for the taste can be increased by freezing again. The integral cooling is also beneficial to prolonging the shelf life of the juice.

In a preferred embodiment, a liquid cooling method is adopted, and specifically, the cooling device includes:

the water jacket is arranged on the juice bin, the water jacket and the juice bin 6 form a cooling bin 5, the cooling area is large, and the water jacket is not directly contacted with juice; and

a forced cooling circulation means for supplying water to the water jacket, such as a heat exchanger 17 shown in fig. 1, and a pump (not shown).

Claims (10)

1. A screw juicer, comprising:

a frame;

the pipe shell is horizontally arranged on the rack, and at least one downward surface of the pipe shell is a net surface;

the spiral assembly comprises a spiral shaft and a spiral arranged on the spiral shaft, and the spiral shaft, the spiral and the pipe shell are coaxial;

the feed hopper is positioned at the feed end of the pipe shell;

the discharge hopper is positioned at the discharge end of the pipe shell;

the juice bin is positioned below the net surface to receive juice;

the driving assembly is positioned at one end of the pipe shell and used for driving the screw shaft to rotate;

the spiral is provided with sub-spirals which are sequentially arranged in the axial direction of the spiral shaft, the volume of a single circle of the sub-spiral positioned at the front stage is relatively large, the volume of a single circle of the sub-spiral positioned at the rear stage is relatively small, and an expansion section is arranged between every two adjacent sub-spirals so as to expand the compressed material under decompression.

2. The screw juicer of claim 1, wherein the structure for determining the volume of a single turn of the sub-screw is: the spiral shaft is a cylindrical rod, and the sub-spiral determines the volume of a single circle through the change of the pitch of the spiral.

3. The screw juicer of claim 2, wherein the expansion segment is:

a first structure being an expansion helix having a pitch greater than that of any of the sub-helices; or

And the second structure is an optical axis section.

4. The screw juicer of claim 3, wherein each expansion screw has no less than 1.5 and no more than 2 turns

If the optical axis section is the optical axis section, the length of the optical axis section is not less than 0.8 times of the maximum screw pitch in the two adjacent sub-spirals and not more than 1.5 times of the maximum screw pitch in the two adjacent sub-spirals.

5. A spiral juicer according to any one of claims 1 to 4 wherein the pitch of each sub-spiral tapers from one end to the other.

6. The screw juicer of claim 5 wherein all of the sub-screws exhibit overall a decreasing pitch from the feed end to the discharge end.

7. The screw juicer of claim 1, wherein the structure for determining the volume of a single turn of the sub-screw is: the sub-helix is a constant pitch helix, and the sub-helix determines the volume of a single turn through the change of the taper of the spiral shaft.

8. A screw juicer according to claim 1 wherein a secondary filter screen is provided below the screen surface.

9. Screw juicer according to claim 1, characterized in that the juice bin is equipped with cooling means.

10. The screw juicer of claim 9, wherein the cooling means comprises:

a water jacket installed on the juice bin; and

and a forced cooling circulation device for supplying water to the water jacket.

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