WO2020181835A1 - Vertical juicer having pressing screw - Google Patents

Abstract

A vertical juicer having a pressing screw comprises a juicer base (1a), a juice collection chamber (2a) disposed on the juicer base (1a), and a screw (3a) longitudinally disposed in the juice collection chamber (2a). A juice outlet (21a) and a residue outlet (22a) are provided in the juice collection chamber (2a). A motor (11a) is disposed in the juicer base (1a). The screw (3a) comprises a screw shaft (31a) and a screw element (32a), and a spiral (321a) is provided at the screw element (32a). The juice collection chamber (2a) comprises a bottom wall and a side wall. A pressing barrel (4a) is further sleeved on the screw (3a). The pressing barrel (4a) is detachably disposed with respect to the juice collection chamber (2a), and comprises a barrel element (41a) open at the top and bottom thereof. A position-limiting ring (23a) is provided at the bottom wall of the juice collection chamber (2a). A lower portion of the pressing barrel (4a) and the position-limiting ring (23a) match with each other by means of insertion and form a lower filter gap (6a). The invention helps to increase juice extraction rates and speed, and facilitates disassembly and cleaning without adding accessories.

Description

Vertical screw extrusion juicer

This application claims the priority of the following Chinese patent applications:

Submitted to the Chinese Patent Office on March 12, 2019, with the application number 201910182797.4 and the title of the invention "a vertical screw extrusion juicer with fast juice extraction",

It was submitted to the Chinese Patent Office on July 9, 2019, with the application number 201910614389.1, and the title of the invention was "A Juicing Method for a Juicer",

The entire content is incorporated into this application by reference.

Technical field

The invention belongs to the field of food processing machines, and particularly relates to a vertical screw extrusion juice extractor.

Background technique

With the improvement of people's living standards, more and more attention is paid to healthy diet, and the demand and requirements for freshly squeezed juice are also higher and higher. The patent application with the patent publication number US20090049998A1 discloses a juice extractor, which includes a base, a motor arranged in the base, and a squeezing assembly arranged on the base. The squeezing assembly includes a juice collecting cavity and is arranged longitudinally in the base. A screw in the juice cavity, an extruding cylinder sleeved on the outside of the screw, and an upper cover covering the juice collection cavity. The squeeze barrel is provided with a filter mesh so that the juice squeezed out by the screw and the squeeze barrel passes through the filter mesh and finally flows out of the juice opening on the juice collection cavity, while the residue intercepted by the filter mesh is The screw continues to squeeze downwards and is finally discharged from the residue outlet at the bottom of the juice collection cavity, thereby realizing the separation of the juice residue of the material. Due to the small pore size and large number of the filter mesh of this extrusion cylinder, the fine slag crushed by the screw can easily block the mesh, resulting in the juice cannot be smoothly discharged from the filter hole, and mixed with the slag, resulting in poor juice discharge and juice yield. It is not ideal, and the squeeze cylinder is difficult to clean after the juicing. Moreover, the filter mesh is set on the metal mesh, and the metal mesh is then filled on the plastic body of the extrusion cylinder through injection molding, which is costly to set up and processing, while the filter mesh on the metal mesh needs to be processed by chemical corrosion. The formation of the method further increases the cost while also bringing environmental pollution problems.

When the user needs to squeeze juice, first cut the fruits, vegetables and other materials that need to be juiced into lumps, then put the lumpy materials into the extrusion cylinder, start the motor, and drive the screw to rotate, and the screw on the screw will block the Shaped fruit and vegetable materials are gradually cut into smaller pieces and enter the containing space. Under the axial pushing action of the screw, the material gradually moves downward and is squeezed, so that the fruit and vegetable materials are squeezed out of the juice, and the remaining materials become slag. The squeezed juice is filtered by the filter hole on the squeeze cylinder and then flows out from the juice outlet at the lower part of the juice collection cavity, and the residue is discharged from the residue outlet at the lower part of the juice collection cavity. However, the existing juicer structure has the following defects:

First of all, the filter hole bracket is set on the extrusion cylinder. When the extrusion cylinder is made of stainless steel, the small filter holes are difficult to be formed by the existing machining methods and need to be manufactured by complicated processes such as corrosion. Difficulties, increase production costs; when the extrusion cylinder is made of plastic materials, the existing wood-plastic molding process is difficult to form small filter holes, and it is easy to form defects such as flashes at the filter holes, thereby affecting the size of the filter holes Accuracy.

In particular, the existing squeeze cylinder is usually provided with filter holes in the middle and lower part of the squeeze cylinder. Correspondingly, the juice extraction method is that the material flows out through the filter holes when the juice is squeezed, but the squeeze The material is easy to block the filter holes, thereby affecting the juice output speed. In addition, the existing juice extraction method mainly forms juice by squeezing the material, that is, it uses a pure squeezing process, which will increase the load of the screw and the extrusion barrel on the one hand, making the extrusion barrel easy There are problems of cracking and deformation, while increasing the power and cost of the motor. On the other hand, the juice in the material is difficult to fully squeeze out, which is not conducive to improving the juice yield.

In addition, the installation and alignment between the extrusion barrel and the juice chamber is difficult, and the user is inconvenient to operate. Especially when the extrusion barrel is not installed in place, it will directly affect the extrusion gap value between the screw and the extrusion barrel. Affect the efficiency of juice extraction, affect the juice yield, and even produce abnormal noise, which affects the user experience.

The patent application with the patent publication number WO2019088369A1 discloses a juice squeezing barrel, which includes a first module with a gap and a second module with a rib. The ribs are inserted into the gap to form a slit with a predetermined shape. The juicer bucket is equivalent to two detachable parts. Although this arrangement can achieve cleaning after disassembly, the strength of the first module and the second module during the juice extraction process is difficult to ensure, and the accuracy of the seam is difficult to control. The process and the positioning structure are complicated, and the number of accessories is increased, and the cost is high.

Summary of the invention

The purpose of the present invention is to provide a vertical screw extrusion juicer with convenient installation, high juice yield and fast juice yield, which is not only beneficial to increase the juice yield and juice speed, but also facilitates the manufacture of the juicer and the cleaning after use.

In order to solve the above technical problems, the present invention provides a vertical screw extrusion juice extractor, which includes a base, a juice collection cavity arranged on the base, and a screw longitudinally arranged in the juice collection cavity to cover the juice collection cavity On the upper cover, the juice collection cavity is provided with a juice outlet and a slag outlet. The base is equipped with a motor. The screw includes a screw shaft and a screw body. The screw body is provided with a screw. The juice collection cavity includes a bottom wall and a side wall. An extrusion barrel is also sleeved outside the screw, the extrusion barrel is detachably arranged relative to the juice collection cavity, the extrusion barrel includes a cylindrical body with upper and lower openings, and the bottom wall of the juice collection cavity A limit ring is provided, and the lower part of the extrusion cylinder is inserted and matched with the limit ring to form a lower filtering gap.

Further, the lower part of the extrusion cylinder is provided with openings at intervals in the circumferential direction, and the limit ring is provided with protrusions matching the openings at intervals in the circumferential direction, and the protrusions extend into the openings to form the Lower the filter gap.

Further, the lower filtering gap includes a gap formed between the side wall of the bump and the side wall of the opening.

Further, the limiting ring includes an annular wall, and the lower filter gap is at least partially located in the annular wall.

Further, the convex block is circumferentially fixedly arranged in the annular wall, and a positioning structure for positioning the lower part of the extrusion cylinder is also provided on the limit ring.

Further, the lower part of the side wall of the extrusion cylinder is inserted into the limit ring, and the lower filtering gap includes a gap formed between the outer side wall of the extrusion cylinder and the inner side wall of the limit ring.

Further, the upper end of the cylindrical body is provided with an upper filtering gap, the cylindrical body includes an annular side wall, and the upper end of the annular side wall is provided with a plurality of grid bars, and the upper filtering gap is formed between adjacent grid bars.

Further, the cylindrical body is also provided with ribs for cooperating with the screw to extrude the material, the ribs are arranged on the annular side wall, and at least part of the ribs are arranged between the upper filter gap and the lower filter gap.

Further, the effective diameter of the squeeze cylinder is at least partially reduced from top to bottom, and the upper filter gap is vertically arranged on the upper part of the squeeze cylinder.

Further, the inner side wall of the cylindrical body is provided with a pulverizing rib that cooperates with the screw to squeeze the pulverized material, and the side of the pulverizing rib is provided with a cutting edge facing the rotation direction of the screw.

Further, the crushing ribs include coarse crushing ribs and fine crushing ribs. The top surface of the coarse crushing ribs is higher than the top surface of the fine crushing ribs, and the height of the coarse crushing ribs protruding from the inner wall of the cylindrical body is from top to bottom. Decrease the setting gradually.

Further, the lower part of the extrusion cylinder is provided with circumferentially spaced openings, a protrusion is formed between adjacent openings, and the inner wall of the protrusion is provided with grinding ribs, and the grinding ribs are located below the crushing ribs.

Further, the upper cover is provided with a positioning ring for positioning the upper end of the extrusion cylinder, and the positioning ring is at least partially sleeved outside the cylindrical body.

Further, the limit ring and the juice collection cavity are integrally arranged, and the residue outlet is located in the limit ring.

Further, the width of the upper filtering gap is W, 0.3mm≤W≤5mm, and the dynamic gap of the lower filtering gap is I, 0.2mm≤I≤1.5mm.

Further, the positioning structure includes a positioning protrusion, at least one of the protrusions is a positioning protrusion, and the positioning protrusion is inserted into the opening to prevent rotation of the extrusion cylinder.

The beneficial effects of the present invention are:

1. The extrusion barrel is sleeved on the outside of the screw. The extrusion barrel includes a cylindrical body with upper and lower openings. The bottom wall of the juice collection cavity is provided with a limiting ring. The lower part of the extrusion barrel is inserted and matched with the limiting ring to form a lower filtering gap. The material enters the juice collection cavity through the feed channel on the upper cover and enters the crushing gap formed between the extrusion barrel body and the screw under the drive of the screw on the screw, and the cylindrical body is matched with the stop ring A lower filter gap is formed for filtering the juice, and the residue is completely blocked in the space of the crushing gap, and the juice smoothly flows out through the lower filter gap to the juice mouth. This setting separates the squeezing, crushing and filtering of the squeeze cylinder. The same position on the body assumes a function. The area where the body is not provided with a filter gap cooperates with the screw to bear the main squeezing force, and the lower part of the body is limited by the limit ring. The lower filter gap for filtering is formed in cooperation, which increases the strength of the body, and greatly simplifies the structure and manufacturing process of the extrusion cylinder, and there is no need to set a filter mesh on the extrusion cylinder body, without adding accessories Realize easy disassembly and super easy washing, greatly improving user experience. The main body is in the shape of a cylinder, which is convenient and reliable to fit with the upper cover, and the main body can be made of one material, which has reliable strength and is not easy to be crushed. The limit ring on the bottom wall of the juice collection chamber matched with the lower end of the body accurately positions the extrusion cylinder body in the circumferential direction, thereby fully ensuring the accuracy of the extrusion and crushing gap between the body and the screw, ensuring high juice yield and Juicing efficiency.

2. The upper end of the main body is also provided with an upper filtering gap. The materials that have just been drawn into the spiral, especially soft fruits such as oranges and watermelons, are squeezed out of a large amount of juice in the crushing space that matches the upper part of the screw and the extrusion cylinder. The shape is still large and has not been crushed into particles. Therefore, a large amount of juice instantly gushes out from the upper filter gap and flows out from the juice mouth through the space between the squeeze cylinder body and the juice collection cavity. The juice has a large amount of juice flowing out of the juice mouth, which greatly improves the efficiency of juice extraction, has a good user visual experience, and fully shortens the juice extraction time. On the other hand, the large amount of juice has a very low pomace content, which ensures the purity of the juice taste. At the same time, it can avoid the blockage in the crushing gap or the upward return of material, and it also avoids that a large amount of juice is not discharged in time but continues to be fully mixed with the slag, filtered and discharged from the lower filter gap. At this time, the juice passes through a long path and is squeezed out. The juice has a high concentration and is easily oxidized.

3. The upper cover is provided with a positioning ring that matches the upper end of the squeeze cylinder body. The locating ring is at least partially sleeved on the outside of the squeeze cylinder body. The body is positioned from the upper end to prevent the squeeze cylinder body from squeezing juice from the material. Shift in the process. At the same time, since the lower part of the main body is provided with a lower filtering gap, the middle part of the main body bears a relatively large squeezing force. This arrangement separates the positioning, filtering and squeezing force parts of the squeeze cylinder to further strengthen the strength of the body and the squeezing during the juice extraction process. Reliability of cylinder positioning, extrusion and filtration.

4. The screw and the squeeze cylinder produce a large amount of juice under the preliminary cooperation, a large amount of juice flows out from the upper filtering gap, and the remaining material continues to move downwards under the drive of the screw, passing through the gap between the body of the squeeze cylinder and the screw. The gap is squeezed and crushed, and the juice that is further squeezed out is filtered and discharged from the lower filter gap. In this way, the bottom end of the squeeze cylinder body has a simple structure and good strength, and there is no dead corner for cleaning, and it is more convenient for the bottom end of the body to be around Installed upward on the limit ring, and the formed lower filter gap is located in the lower part of the body, which can maximize the juice downward from the lower filter gap, avoid mixing the juice into the slag, and effectively improve the juice yield. The lower filtering gap formed in the direction can also meet the requirements of the lower juice discharge speed, and meet the filtering requirements while ensuring the strength of the body.

5. The lower part of the squeeze cylinder is provided with openings at intervals in the circumferential direction. The upper circumferential interval of the limit ring is provided with protrusions matching the openings. The protrusions extend into the openings to form a lower filter gap. The opening of the opening extends the distance of the filter gap. It also expands the path of juice outflow, thereby further improving the juice output efficiency and shortening the time required for juice extraction. The lower filter gap is formed by circumferentially inserting and fitting openings and bumps. The lower filter gap has a stable value and high precision. It also assists the anti-rotation of the extrusion cylinder, making the circumferential anti-rotation positioning of the extrusion cylinder more reliable.

6. The lower end of the annular side wall is inserted into the limit ring to form a lower filtering gap between the outer side wall of the body and the inner side wall of the limit ring. Under the action of the continuous downward advancement of the spiral, a steady stream of juice passes through the bottom end of the body first The gap formed between the bottom end of the limit ring and the bottom end of the limit ring gushes upward along the lower filter gap between the inner side wall of the limit ring and the outer side wall of the body. At this time, the heavier slag cannot pass through the bottom end of the body and the bottom of the limit ring. The gap between the ends, even if a small amount of slag passes through, it is difficult to move upward under the action of gravity, which is equivalent to the double filtration of the juice, the juice purity is higher, the taste is more pure, and the juice running path is long, and the juice residue separation is more thorough. The body is still very clean. The inner and outer casing between the side wall of the body and the limit ring also avoids local deformation of the limit ring, and at the same time prevents local cracking of the bottom end of the extrusion cylinder body.

7. The limit ring is integrated with the juice collection cavity, and the slag outlet is located in the limit ring, which is convenient for the processing and manufacturing of the juice collection cavity, and the position of the limit ring relative to the juice collection cavity and the slag outlet is accurately fixed to improve extrusion The installation and positioning accuracy of the barrel also improves the accuracy of the crushing gap value between the screw and the inner wall of the extrusion barrel body.

8. The limit ring includes an annular wall, and the lower filtering gap is at least partially located in the annular wall. On the one hand, it prevents the lower part of the squeeze cylinder from deforming, and on the other hand, the annular wall hinders the slag, so that the juice is discharged after double filtration. , The slag content in the juice is lower, and the juice is more pure.

9. The convex block is circumferentially fixed in the annular wall, and the limit ring is also provided with a positioning structure for positioning the lower part of the extrusion cylinder, thereby separating the positioning structure from the lower filter gap and avoiding the lower filter gap from assuming the preventive function, thereby ensuring While the installation position of the extrusion cylinder body is accurate, the gap value of the lower filter gap is stable and consistent.

10. The body is provided with ribs that are matched with the screw screw extrusion. At least part of the ribs are located between the upper filter gap and the lower filter gap, so that the position where the filter gap and the filter gap are not provided on the body is matched with the screw and bears the main extrusion Pressure, thereby greatly improving the crushing and squeezing effect of materials, and the squeezing cylinder has a long service life.

Description of the drawings

The present invention will be further explained below in conjunction with the drawings:

Figure 1 is a schematic diagram of the whole structure of the juice extractor in the first embodiment.

Figure 2 is a schematic diagram of the structure of the extrusion cylinder and the upper cover in the first embodiment.

Figure 3 is a schematic diagram of the structure of the squeeze cylinder and the juice collection cavity in the first embodiment.

Fig. 4 is a schematic diagram of the structure of the limiting ring of the juice collecting cavity in the first embodiment.

Figure 5 is an enlarged view of A in Figure 4.

Fig. 6 is a schematic diagram of the structure of the extrusion cylinder in the second embodiment.

Figure 7 is a schematic diagram of the structure of the squeeze cylinder and the juice collection cavity in the third embodiment.

Fig. 8 is a schematic diagram of the matching structure of the extrusion cylinder and the juice collection cavity in the fourth embodiment.

Figure 9 is a schematic diagram of the whole structure of the juice extractor in the fifth embodiment.

Figure 10 is a schematic diagram of the connection structure between the squeeze cylinder and the juice collection cavity in the fifth embodiment.

Fig. 11 is a schematic diagram of a structure of the juice collecting cavity in the juice extractor of the fifth embodiment.

Figure 12 is a schematic diagram of the assembly structure of the lower juice extraction tooth and the matching tooth groove in the fifth embodiment.

Figure 13 is a schematic diagram of a structure of the extrusion cylinder in the fifth embodiment.

Fig. 14 is a schematic cross-sectional view of the squeeze cylinder at the upper filtering gap in the fifth embodiment.

The names of the parts marked in the figure are as follows:

1a, base; 11a, motor; 2a, juice chamber; 21a, juice outlet; 22a, slag outlet; 23a, limit ring; 231a, bump; 232a, annular wall; 233a, juice guide groove; 234a, support rib; 235a, juice guide channel; 24a, positioning groove; 3a, screw; 31a, screw shaft; 32a, screw body; 321a, screw; 4a, extrusion barrel; 41a, body; 411a, opening; 412a 413a, upper filter gap; 414a, protrusion; 4141a, positioning boss; 42a, ribs; 421a, crushing ribs; 4211a, coarse crushing ribs; 4212a, fine crushing ribs; 4213a, cutting edge; 4214a, Crushing surface; 4215a, backing surface; 422a, grinding ribs; 43a, straight section; 44a, cone section; 5a, upper cover; 51a, positioning ring; 6a, lower filter gap;

1b, base; 11b, motor; 12b, upper cover; 13b, transmission mechanism; 2b, juice chamber; 21b, residue outlet; 22b, juice outlet; 25b, lower juice outlet; 251b, matching section; 252, release Section; 26b, lower filter gap; 27b, reinforcing ring; 3b, screw; 31b, screw body; 32b, screw shaft; 4b, extrusion barrel; 41b, matching tooth groove; 42b, grinding rib; 43b, juice area; 44b , Upper filter gap; 45b, buffer gap.

detailed description

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

As shown in Figures 1 to 8, a vertical screw extrusion juice extractor includes a base 1a, a juice collection cavity 2a arranged on the base 1a, a screw 3a longitudinally arranged in the juice collection cavity 2a, and a cover The upper cover 5a is assembled above the juice collection cavity 2a. The juice collection cavity 2a is provided with a juice opening 21a and a residue outlet 22a. The base 1a is provided with a motor 11a. The screw 3a includes a screw shaft 31a and a screw body 32a. The screw body 32a is provided with a screw 321a, the juice collection cavity 2a includes a bottom wall and a side wall, wherein the screw 3a is also sheathed with an extrusion barrel 4a, which is detachable relative to the juice collection cavity 2a The squeeze cylinder 4a includes a cylindrical body 41a with upper and lower openings. The body 41a is also provided with ribs 42a that cooperate with the screw 3a to extrude materials. The bottom wall of the juice chamber 2a is provided with a stop ring 23a. The lower part of the squeeze cylinder 4a is plug-fitted with the limiting ring 23a to form a lower filtering gap 6a. In this embodiment, the center of the bottom wall of the juice collection cavity 2a is provided with a waterproof cylinder with a through hole, the limit ring 23a is arranged around the waterproof cylinder, and a valve is also provided between the limit ring 23a and the waterproof cylinder. An annular channel extending into the lower part of the screw. The material enters the juice collection cavity 2a through the feed channel on the upper cover and is driven by the screw 321a on the screw 3a into the crushing gap formed between the extrusion barrel body 41a and the screw 3a, and the cylindrical body 41a passes through In cooperation with the limiting ring 23a, a lower filtering gap 6a is formed for filtering juice, so that the residue is completely blocked in the space of the crushing gap, and the juice smoothly flows out through the lower filtering gap 6a to the juice opening 21a.

In addition, this arrangement separates the squeezing, crushing and filtering of the squeeze cylinder 4a. The same position on the body 41a mainly assumes a function. The area where the body 41a is not provided with a filter gap cooperates with the screw 3a to bear the main squeezing force. The lower part of 41a is matched with the limiting ring 23a to form a lower filtering gap 6a for filtering, which increases the strength of the body 41a and greatly simplifies the structure and manufacturing process of the extrusion cylinder 4a. There is no need to set up filter meshes, and it is easy to disassemble and clean without adding accessories, which greatly improves the user experience. The main body is in the shape of a cylinder, which is convenient and reliable to fit with the upper cover, and the main body can be made of one material, which has reliable strength and is not easy to be crushed. The limit ring on the bottom wall of the juice collection chamber matched with the lower end of the body accurately positions the extrusion cylinder body in the circumferential direction, thereby fully ensuring the accuracy of the extrusion and crushing gap between the body and the screw, ensuring high juice yield and Juicing efficiency.

Example one

As shown in Figures 1 to 5, a vertical screw extrusion juice extractor includes a base 1a, a juice collection cavity 2a arranged on the base 1a, a screw 3a longitudinally arranged in the juice collection cavity 2a, and a cover The upper cover 5a is assembled above the juice collection cavity 2a. The juice collection cavity 2a is provided with a juice opening 21a and a residue outlet 22a. The base 1a is provided with a motor 11a. The screw 3a includes a screw shaft 31a and a screw body 32a. The screw body 32a is provided with a screw 321a, the juice collection cavity 2a includes a bottom wall and a side wall, wherein the screw 3a is also sheathed with an extrusion barrel 4a, which is detachable relative to the juice collection cavity 2a The squeeze cylinder 4a includes a cylindrical body 41a with upper and lower openings. The body 41a is also provided with ribs 42a that cooperate with the screw 3a to extrude materials. The bottom wall of the juice chamber 2a is provided with a stop ring 23a. The lower part of the squeeze cylinder 4a is plug-fitted with the limiting ring 23a to form a lower filtering gap 6a. The material enters the juice collection cavity through the feed channel on the upper cover, and is driven by the screw on the screw into the crushing gap formed between the extrusion barrel body and the screw, and the cylindrical body is formed by cooperating with the stop ring The lower filter gap is used to filter the juice, so that the slag is completely blocked in the space of the crushing gap, and the juice smoothly flows out through the lower filter gap to the juice mouth. The top surface of the squeeze cylinder 4a is not lower than the upper port of the juice collection cavity 2a. Specifically, as shown in FIG. 3, the top surface of the squeeze cylinder 4a can be set 5mm-12mm higher than the upper port of the juice collection cavity 2a. In this embodiment, the height difference between the top surface of the squeeze cylinder 4a and the upper port of the juice collection chamber 2a is 8mm. This arrangement makes the squeeze cylinder 4a very easy to pick and place, and the positioning of the upper cover 5a and the squeeze cylinder 4a is more It is reliable and avoids shaking of the upper end of the extrusion cylinder 4a.

The setting of the lower filter gap 6a separates the squeezing, crushing and filtering of the squeeze cylinder. The body 41a has a function at the same position. The area where the body 41a is not provided with a filter gap cooperates with the screw to bear the main pressing force, and the body 41a The lower part cooperates with the limit ring to form a lower filter gap 6a for filtering, which increases the strength of the body, and greatly simplifies the structure and manufacturing process of the extrusion cylinder, and there is no need to set a filter mesh on the extrusion cylinder body , It realizes easy disassembly and super washing without adding accessories, greatly improving user experience. The main body is in the shape of a cylinder, which is convenient and reliable to fit with the upper cover, and the main body can be made of one material, which has reliable strength and is not easy to be crushed. The stop ring on the bottom wall of the juice collection cavity matched with the lower end of the body accurately positions the extrusion cylinder body 41a in the circumferential direction, thereby fully ensuring the accuracy of the extrusion and crushing gap between the body and the screw and ensuring a high juice yield And juice efficiency.

The lower part of the squeeze cylinder 4a is provided with an inserting part, and the bottom wall of the juice collection cavity is provided with a matching part. The inserting part and the matching part are inserted and matched to form a lower filtering part. In this embodiment, the squeeze cylinder 4a is inserted into The connecting portion includes an opening 411a provided in the lower part of the body in the circumferential direction. The matching portion of the squeezing cylinder 4a includes the limiting ring 23a provided on the bottom wall of the juice collection cavity 2a. The squeezing cylinder 4a and the upper cover 5a An upper positioning structure is provided therebetween, and a lower positioning structure is provided between the extrusion cylinder 4a and the matching portion. As shown in Figure 2, the extrusion cylinder 4a includes a straight cylinder section 43a and a cone section 44a from top to bottom, and the lower end of the straight cylinder section 43a and the upper end of the cone section 44a are connected. Since there is no filter part in the middle of the squeeze cylinder, the middle of the body 41a only smashes and squeezes the material. The squeeze cylinder receives a large reaction force from the material, so the squeeze cylinder is fully fixed in the juice collection cavity, and on the one hand, the inner wall of the body The precision of the extrusion gap between the screw and the screw, on the other hand, ensures that the extrusion barrel will not rotate with the screw, so that the material can be fully and effectively crushed and extruded. The upper positioning structure includes a positioning ring 51a provided on the upper cover 5a, the positioning ring 51a is at least partially sleeved outside the body, and the upper positioning structure further includes the straight cylinder section 43a, which extends into the positioning ring. Inside the ring 51a and cooperate with the positioning ring 51a. The positioning ring 51a positions the body from the upper end to prevent the displacement of the squeeze cylinder body during the process of squeezing and squeezing the juice. The upper cover 5a includes a top wall and a side wall, and the positioning ring 51a is arranged on the side wall. When the upper cover 5a is installed in place by screwing, the positioning ring 51a also fixes the upper part of the extrusion cylinder in place. The positioning ring 51a and the upper cover 5a are made integrally. Since the lower part of the main body is provided with a lower filtering gap, the middle part of the main body bears a greater squeezing force. This arrangement separates the positioning, filtering and squeezing force parts of the squeeze cylinder to further strengthen the strength of the body and the squeeze cylinder in the juice extraction process Reliability of positioning, squeezing and filtering.

The lower part of the squeeze cylinder 4a is provided with openings 411a at intervals in the circumferential direction, and the upper circumference of the limiting ring 23a is provided with protrusions 231a that cooperate with the openings 411a at intervals, and the protrusions 231a extend into the openings 411a. Thus, the lower filtering gap 6a is formed. The setting of the opening extends the distance of the filter gap, which also expands the path for the juice to flow out, thereby further improving the juice extraction efficiency and shortening the time required for juice extraction. The lower filter gap 6a is formed by the circumferentially inserted opening 411a and the protrusion 231a. The gap value of the lower filter gap 6a is stable and the accuracy is high. It also assists the extrusion cylinder 4a to prevent rotation, so that the extrusion cylinder 4a is circumferentially anti-rotational. Turn positioning is more reliable. The lower positioning structure includes a positioning protrusion, at least one of the protrusions 231a is the positioning protrusion, and the positioning protrusion is inserted into the opening to prevent rotation of the extrusion cylinder 4a. In this embodiment, three positioning protrusions are provided, that is, there are three protrusions 231a in the lower circumferential direction of the extrusion cylinder 4a as positioning protrusions that not only form the lower filtering gap but also play a role in positioning the extrusion cylinder. Specifically, the upper part of the positioning protrusion is tightly fitted with the upper part of the opening for circumferential positioning of the extrusion cylinder, and the middle part of the positioning protrusion forms a lower filtering gap with the middle part of the opening, so that it can be installed without special positioning structure. The precise positioning of the extrusion cylinder is realized, the structure is simplified, and the precision value and the set number of the lower filter gap are not affected.

The lower end of the annular side wall of the squeeze cylinder body 41a is inserted into the stop ring 23a through the opening and is mated with the protrusion. A secondary filtering gap is formed between the outer side wall of the body 41a and the inner side wall of the stop ring 23a. In the example, the gap value of the secondary filter gap is greater than the gap value of the lower filter gap 6a. Under the action of the continuous downward advancement of the spiral, the continuous flow of juice first passes through the lower filter gap 6a, and then flows along the inner side wall of the limit ring. The secondary filtration gap between the side walls of the body gushes upwards. At this time, the heavier slag cannot pass through the secondary filtration gap. Even a small amount of slag passes through, it is difficult to move upward under the action of gravity, which is equivalent to the double filtration of the juice. , The juice purity is higher, the taste is more pure, and the juice running path is long, the juice residue separation is more thorough, and the body is still very easy to clean. The inner and outer casing between the annular side wall of the body 41a and the limiting ring also avoids local deformation of the limiting ring, and at the same time prevents local cracking of the bottom end of the extrusion cylinder body.

The limiting ring 23a is integrated with the juice collecting cavity 2a, and the residue outlet 22a is located in the limiting ring 23a. In this embodiment, the juice collecting cavity 2a and the limiting ring 23a are made of plastic material, the limiting ring 23a and the juice collecting cavity 2a are integrally injection molded, and the slag outlet 22a is located on the bottom wall of the juice collecting cavity in the limiting ring 23a. The slag outlet 22a extends outward to form a slag outlet channel, which facilitates the processing and manufacture of the juice collection cavity 2a, and the position of the limit ring 23a relative to the juice collection cavity 2a and the slag outlet 22a is accurately fixed, which improves the squeeze cylinder The installation and positioning accuracy also improves the accuracy of the crushing gap value between the screw and the inner wall of the extrusion barrel body.

In this embodiment, the limiting ring 23a includes an inserting part and a reinforcing part, and the inserting part of the limiting ring 23a and the inserting part at the lower part of the extrusion cylinder 4a are inserted and matched to form a lower filter gap 6a. The reinforcing part includes a reinforcing ring. In this embodiment, the reinforcing ring is the annular wall shown in FIGS. 4 and 5, and the protrusions 231a are circumferentially arranged on the inner ring surface of the reinforcing ring, and the protrusions 231a It is formed by the protrusion of the inner ring surface of the reinforcement ring, and extends downward from the top surface of the reinforcement ring to the bottom wall of the juice chamber 2a. The protrusion 231a cooperates with the opening to form the lower filtering gap 6a, and the reinforcement ring connects the protrusions. , To ensure the strength of the entire lower filter gap to prevent hard materials such as grape seeds from squeezing the body of the extrusion cylinder. The longitudinal section of the protrusion 231a is trapezoidal, which enhances the strength of the connection between the protrusion and the root of the reinforcing ring, and the shape of the opening is also matched with the protrusion, and the width of the opening gradually increases from top to bottom to form a trapezoid.

The reinforcing ring is provided with a juice guide groove 233a in the circumferential direction, and the juice guide groove 233a is formed by a partial depression of the upper end of the side wall of the reinforcing ring, so that the juice guide groove is arranged longitudinally, and the juice guide groove 233a is located Between adjacent protrusions 231a and adjacent to the lower filter gap 6a, the juice discharged through the lower filter gap 6a quickly surges up the juice guide groove 233a and enters the space between the body and the side wall of the juice collection cavity. In this embodiment, specifically, two juice guide grooves 233a are vertically arranged between adjacent protrusions to increase the path for the juice to flow up and out. The inner ring surface of the reinforcing ring is also provided with supporting ribs 234a, the supporting ribs are arranged vertically and located between adjacent protrusions 231a. In this embodiment, since the juice guiding groove 233a is provided, the reinforcing ribs are arranged at Between adjacent juice guide grooves, the supporting ribs are used to support the protrusions to prevent the protrusions from deforming outwards, thereby ensuring the accuracy of the lower filtering gap, and ensuring that there is sufficient clearance between the reinforcing ring and the protrusions for the lower filtering The juice from the gap drains. The reinforcing ring is at least partially arranged around the outer surface of the protrusion 231a to prevent the protrusion from being deformed or broken.

In order to further optimize the structure of filtering out the juice, in this embodiment, a plurality of juice guide channels 235a are provided on the inner ring surface of the reinforcing ring, and each juice guide channel is arranged laterally and is located between adjacent protrusions. The multiple juice guide channels 235a between the blocks are sequentially arranged from top to bottom. The juice guide channel 235a is in communication with the juice guide groove 233a, and the juice filtered from the lower filter gap is guided to the juice guide groove 233a to accelerate The juice flow rate. The dynamic gap of the lower filter gap is I, 0.2mm≤I≤1.5mm, and the dynamic gap value I means that the squeezing barrel 4a, screw 3a, upper cover 5a and other juice extraction components are installed in place to start juice extraction During the normal load process of squeezing and squeezing the juice with the animal material in the squeezing and crushing gap, the I value range of the lower filter gap can be preferably 0.21mm~1.2mm, so that the setting can be accurate The particle size of the micro-particles in the juice is controlled to achieve the ultimate taste. Since the lower filter gap in this embodiment is formed by the opening and the bumps, the control of the dynamic gap in this range can not only ensure the circumference of the body When installed in place, it can also prevent the lower filter gap from being too small or too large due to installation errors. If I is less than 0.2mm, it will easily lead to slow juice output from the lower filter gap, reducing the efficiency of juice discharge, and the high water content in the slag will cause material waste. When I is greater than 1.5mm, the slag will be squeezed out from the gap with the juice, resulting in slag in the juice. The rate is high.

The limiting ring 23a includes an annular wall 232a, which is the reinforcing ring. In this embodiment, the annular wall is a continuous annular side wall, and the lower filter gap is at least partially located in the annular wall 232a , On the one hand, it prevents the lower part of the squeeze cylinder from deforming, on the other hand, the annular wall obstructs the slag, so that the juice is discharged after double filtration. The slag content in the juice is lower and the juice is more pure. The convex block 231a is circumferentially fixedly arranged in the annular wall, and the stop ring 23a is also provided with a positioning structure for positioning the lower part of the extrusion cylinder, so as to separate the positioning structure from the lower filter gap and prevent the lower filter gap from assuming responsibility The function ensures that the installation position of the extrusion cylinder body is accurate, and the gap value of the lower filter gap is stable and consistent.

The squeezing barrel 4a includes an annular side wall provided with a crushing rib 421a that cooperates with the screw to squeeze the crushed material. The crushing rib is provided with a cutting edge 4213a on the side facing the screw rotation direction, and the cutting edge faces the screw The direction of rotation can cut the material driven by the spiral more quickly and efficiently, and the juice can be squeezed more fully under the cooperation of cutting and extrusion. The crushing rib includes a crushing surface 4214a and a backing surface 4215a, and the cutting edge 4213a is formed at the junction of the top of the crushing surface and the top of the backing surface. The angle between the crushing surface and the inner wall of the main body is greater than the angle between the backing surface and the inner wall of the main body. The crushing surface not only cooperates with the cutting edge to crush the material, but also blocks the material to prevent the material from rotating with the spiral. The backing surface is smoothly connected with the inner side wall of the extrusion cylinder, which makes the roots of the crushing ribs firm and not easy to break on the one hand, and also facilitates the cleaning of the roots of the crushing ribs.

Specifically, the crushing ribs include coarse crushing ribs 4211a and fine crushing ribs 4212a. In this embodiment, both the coarse crushing ribs 4211a and the fine crushing ribs 4212a are provided with cutting edges, and the top surface of the coarse crushing ribs is higher than that of the fine crushing ribs. The height of the top surface and the coarse crushing rib protruding from the inner wall of the extrusion cylinder body gradually decreases from top to bottom. Correspondingly, the crushing gap between the screw and the inner wall of the extrusion cylinder body also gradually decreases from top to bottom. The setting is more conducive to the squeeze out of the juice in the fine particle material. The lower part of the extrusion cylinder body is provided with circumferentially spaced openings 411a, and protrusions 231a are formed between adjacent openings. The inner wall of the protrusions 231a is provided with grinding ribs 422a. Specifically, the grinding ribs 422a are located Below the coarse crushing ribs and the fine crushing ribs, in this embodiment, the fine crushing ribs are arranged in layers, specifically divided into two layers, the upper layer is provided with three fine crushing ribs in the circumferential direction, and the lower layer is provided with twelve fine crushing ribs in the circumferential direction. Ribs, at least two finely crushed ribs are set at different heights, which is good for breaking the regular movement of materials and squeezing out more juice. The material is crushed and squeezed by coarse crushing ribs and fine crushing ribs, and then ground by grinding ribs. The grinding ribs are set on the protrusions. The ground juice immediately flows out from the lower filtering gap to further improve the juice yield and finely crush the residue. Then the slag outlet in the limit ring is discharged through the slag outlet channel.

It is understandable that the lower filtering gap can also be designed in other types. The lower end of the squeeze cylinder body is not provided with an opening, but the lower end of the annular side wall of the body is inserted into the stop ring. The outer side wall of the body and the inner side of the stop ring The lower filtering gap is formed between the walls. Under the action of the continuous downward advancement of the spiral, the continuous flow of juice first passes through the gap formed between the bottom end of the body and the bottom end of the limit ring, and then runs along the inner side wall of the limit ring and the body. The lower filtering gap between the outer side walls gushes upwards. At this time, the heavier slag cannot pass through the gap between the bottom end of the body and the bottom end of the limit ring. Even if a small amount of slag passes through, it is difficult to move upward under the action of gravity. It is equivalent to that the juice has been double-filtered, the juice purity is higher, the taste is more pure, and the juice running path is long, the juice residue separation is more thorough, and the body is still very easy to clean. The inner and outer casing between the body-shaped side wall and the limiting ring also avoids local deformation of the limiting ring and at the same time prevents local cracking at the bottom end of the extrusion cylinder body.

It is understandable that the limit ring and the juice collection cavity are arranged separately, the limit ring is detachably arranged on the bottom wall of the juice collection cavity, and the limit ring can be fixed by mechanical connection methods such as snaps, threads, or transition fits. On the bottom wall of the juice chamber, it is convenient for thorough cleaning after use.

It is understandable that the reinforcing portion may also be a reinforcing rib provided on the outer side of the protrusion, and the reinforcing rib is made integrally with the protrusion, so that the structure of the limit ring is simpler. Accordingly, the lower filter gap The height in the vertical direction is also higher, and the filtration area is larger, which is more conducive to the rapid filtration and discharge of juice.

It is understandable that the upper cover includes a top wall and a side wall, the positioning ring may also be arranged on the top wall, or partly arranged on the top wall and partly arranged on the side wall, and the shape of the positioning ring may also be adapted For improved performance, the upper end surface and/or upper outer surface of the main body can be better positioned by setting bumps or annular steps on the positioning ring.

It is understandable that the positioning protrusion can also be used to position the squeeze cylinder in such a way that both the upper part and the lower part are tightly matched with the opening. Alternatively, the lower positioning structure is the opening and/or the protrusion, which is equivalent to each protrusion and the upper part and/or lower part of the opening assumes the function of positioning the extrusion cylinder, and the lower part of the extrusion cylinder is stressed Even and stable, not easy to shake.

It is understandable that protrusions are formed between adjacent openings, and the lower positioning structure includes positioning ribs arranged on the side walls of the protrusions and/or bumps, so that the setting does not affect the lower filter gap value, and at the same time can ensure For precise positioning of the extrusion cylinder, two or more positioning ribs can be provided.

It can be understood that the annular wall of the limiting ring may also be surrounded by spaced and circumferentially arranged protrusions.

Example two

As shown in FIG. 6, this embodiment optimizes the structure of the extrusion cylinder on the basis of the first embodiment.

In this embodiment, the squeeze cylinder 4a includes a straight section 43a and a cone section 44a from top to bottom. The upper part of the squeeze cylinder 4a is provided with an upper filter part, and the positioning ring is at least partially covered on the upper filter. The upper filter portion includes a plurality of upper filter slits 413a, and the upper filter slits are circumferentially arranged on the straight cylinder section 43a to facilitate local thickening of the wall thickness of the body 41a and prevent the upper filter slits 413a Cracking or deformation occurs, and the straight section can further expand the internal space of the extrusion cylinder 4a, which is beneficial to the improvement of the feeding efficiency. Specifically, the width of the upper filter gap 413a is W, 0.3mm≤W≤5mm, so that the large amount of juice just squeezed out can be quickly discharged through the upper filter gap, and the bulk material cannot pass through the upper filter gap. When W is less than 0.3mm, a large amount of juice cannot be discharged in time, and the upper filter gap is too small, and it is difficult to clean after use. When W is greater than 5mm, the juice gushes out of the upper filter gap and it is easy to bring out the solid material. In the process of spiral rotation, the upper filter gap is also easy to jam, which affects the normal operation of the material. Specifically, the squeeze cylinder body includes a ring-shaped side wall. A plurality of grid bars 412a are provided at the upper end of the ring-shaped side wall. The upper filter gap 413a is formed between adjacent grid bars. The material that has just been drawn into the spiral is especially orange, watermelon, etc. For soft fruits, a large amount of juice is squeezed out in the squeezing and crushing space matched by the screw 3a and the upper part of the squeezing cylinder body, but the material is still in a large block shape and has not been crushed into particles. Therefore, a large amount of juice is instantly filtered from the top The gap 413a gushes out and flows from the juice outlet through the space between the squeeze cylinder body and the juice collection cavity 2a. On the one hand, a large amount of juice flows out of the juice outlet at the beginning of the juice extraction, which greatly improves the juice output efficiency and provides a good user visual experience. , And fully shorten the juice extraction time. On the other hand, the large amount of gushing juice has a very low residue content. While ensuring the purity of the juice taste, it can avoid blockage in the crushing gap or upward return of material, and avoid a large amount of juice. It is discharged in time but continues to be fully mixed with the slag, filtered and discharged from the lower filter gap. At this time, the path that the juice passes through is long, the concentration of the squeezed juice is high, and it is easy to oxidize.

The upper filter gap 413a is circumferentially distributed on the upper part of the extrusion cylinder 4a, the shape of the upper filter gap is U-shaped, the upper end of the upper filter gap is open, and the positioning ring is at least partially sleeved outside the upper filter gap to prevent The free end of the grid bar 412a deforms outwards, thereby fully ensuring the strength of the upper part of the body. The effective diameter of the squeeze cylinder 4a is at least partially reduced from top to bottom, and the grid bars are arranged longitudinally. Correspondingly, the upper filter gap is vertically arranged on the upper part of the squeeze cylinder 4a. This arrangement makes the gap between the inner wall of the squeeze cylinder and the spiral adaptively change with the shape of the material, which is more conducive to the full extrusion of the juice, and the vertical upper filter gap allows the juice to have more flow paths and Space to prevent the juice from being discharged in time and mixing with the residue.

In this embodiment, the coarse crushing rib 4211a extends downward from the top end of the upper filter portion to the top end of the lower filter portion, and the height of the coarse crushing rib 4211a gradually decreases from top to bottom. The fine crushing rib 4212a is arranged between the upper filter part and the lower filter part, and the height of the fine crushing rib 4212a is not higher than the height of the coarse crushing rib 4211a. The upper part of the coarse crushing rib 4211a mainly bears the shearing force to cut the material At the same time, a large amount of juice is squeezed out by the spiral and discharged from the upper filtering gap. The fine crushing rib 4212a bears the greatest squeezing force, and there is no filter part at the position of the fine crushing rib 4212a, thereby strengthening the extrusion Pressure to optimize the crushing effect.

In this embodiment, the ribs are arranged on the annular side wall, and at least a part of the ribs 42a are arranged between the upper filter gap and the lower filter gap, so that the position where the filter gap and the filter gap are not provided on the body bear the main pressing force , That is, the middle part of the main body cooperates with the screw and assumes the main extrusion force, ensuring the efficiency of juice extraction, greatly improving the crushing and extrusion effect of the material, and the extrusion cylinder has a long service life.

It is understandable that the shape of the upper filtering slit may also be a V-shape or an ellipse or a rectangle with rounded corners.

The rest of the structure of this embodiment is consistent with the first embodiment, and will not be repeated here.

Example three

As shown in FIG. 7, the difference between this embodiment and the second embodiment is that the structure of the lower filter gap is different.

The plug-in portion of the squeeze cylinder 4a includes a plurality of protrusions 414a arranged at intervals in the circumferential direction at the lower part of the squeeze cylinder 4a, the lower filtering gap 6a is formed between adjacent protrusions, and the bottom wall of the juice chamber The matching portion on the upper includes a positioning boss 4141a provided at the bottom end of the protrusion, a positioning groove 24a corresponding to the positioning boss 4141a is provided circumferentially on the bottom wall of the juice collection chamber, and the positioning boss is inserted into the The squeeze cylinder is positioned in the positioning groove, which is equivalent to replacing the limit ring with the positioning groove, which greatly simplifies the structure of the bottom wall of the juice chamber, and is easy to manufacture and reduce product cost.

It is understandable that the positioning boss may also be configured as a positioning hook, and the positioning groove may be configured as a positioning hook structure.

The rest of the structure of this embodiment is consistent with the second embodiment, and will not be repeated here.

Example four

As shown in FIG. 8, the difference between this embodiment and the second embodiment is that the structure of the lower filter gap is different.

Specifically, the bottom end of the squeeze cylinder body 41a cooperates with the stop ring 23a to form the lower filtering gap 6a. At this time, the bottom end of the squeeze cylinder body 41a has a simple structure and good strength without any dead corners for cleaning, which is more convenient The bottom end of the body is mounted on the limiting ring 23a in the circumferential direction, and the formed lower filter gap 6a is located at the lowest position of the body, which can maximize the juice downward from the lower filter gap 6a to avoid mixing the juice. In the slag, the juice yield is effectively improved, and the lower filtration gap 6a formed in the circumferential direction can also meet the requirements of the lower juice discharge speed, and meet the filtration requirements while ensuring the strength of the body.

The rest of the structure of this embodiment is consistent with the second embodiment, and will not be repeated here.

Example five

As shown in Figures 9 to 14, a juice extractor method, wherein the juice extractor refers to a household juice extractor that uses physical squeezing to produce fruit and vegetable juice. As shown in Figure 9 and Figure 10, the juice extractor includes a base 1b with a motor 11b inside, a juice collection cavity 2b connected to the base 1b, a screw 3b longitudinally arranged in the juice collection cavity 2b, and a screw 3b. The upper opening of the juice collection cavity 2b is provided with an upper cover 12b with a feeding hole. The screw 3b includes a screw body 31b with a spiral on the surface and a screw body 31b. For the screw shaft 32b, the motor is connected to the screw shaft 32b through the transmission mechanism 13b, so as to drive the screw 3b to rotate.

In addition, the screw body 31b includes a crushing section, an extrusion section, and a grinding section from top to bottom. The height of the screw gradually decreases from top to bottom, so that the gap between the screw body 31b and the extrusion barrel 4b gradually decreases from top to bottom. The lower part of the squeeze cylinder 4b and the bottom of the juice collection cavity form a lower filter gap 26b through a concave-convex structure to ensure that the lower filter gap 26b has a reasonable size, thereby forming a good filtering effect on the juice and allowing The lower end of the squeeze cylinder 4b is positioned in the axial and circumferential directions to avoid displacement of the squeeze cylinder 4b during juice extraction. Of course, we need to provide a juice outlet 22b for outputting juice and a residue outlet 21b for discharging pomace at the bottom of the juice collection cavity, and the juice outlet is set at the bottom of the juice collection cavity outside the squeeze cylinder 4b, and the residue outlet The inner end opening of 21b is arranged on the bottom wall of the juice collection cavity inside the squeeze cylinder 4b.

The juice extraction method of the juice extractor of the present invention at least includes:

Shearing step: the screw rotates, and the screw with the higher height of the screw crushing section shears and breaks the material entering the extrusion barrel into small pieces and generates juice;

Extrusion step: The material after the screw pushes and shears moves down to the grinding section while rotating. As the gap between the screw body and the extrusion barrel gradually decreases from top to bottom, the material is being screwed and extruded by the screw. After the inner wall of the cylinder is squeezed, juice will be produced, and the juice will flow down to the bottom of the juice collection cavity;

Grinding and filtering step: screw the material to the lower part of the squeeze cylinder, the grinding section grinds the material to form pomace and juice, the juice flows out through the lower filter gap into the juice outlet, and the user can collect the juice flowing out through the juice outlet in a container.

It should be noted that the material in this embodiment preferably refers to juicy fruits or vegetables, or a combination of the two, and the juice can be fruit juice, vegetable juice, or mixed fruit and vegetable juice. In addition, before squeezing the juice, the material can be cut into pieces and thrown into the extrusion cylinder through the feeding hole of the upper cover; or the material can be cut into long strips and thrown into the extrusion cylinder. The spiral forms an effect similar to cutting vegetables and cuts the material into small pieces. Preferably, the spiral of the crushing section can be made into edges with smaller rounded corners as much as possible, so as to form a "blunt knife"-like shearing and crushing effect on the material.

In addition, in the grinding and filtering step, the pomace formed at the bottom of the juice collection cavity is discharged from the pomace outlet in the squeeze cylinder. Since the steps of feeding, slagging, etc. belong to the prior art in the field, they will not be described in detail in this embodiment.

It is understandable that due to the low screw height of the grinding section, when the screw pushes the material to the grinding section, it is difficult for the screw to push the material to rotate synchronously with the screw, thus forming a rotation difference between the material and the screw. Relative friction will be formed between the spiral and extruding cylinder of the grinding section, so that the material is fully pulverized to form pomace and the juice is squeezed out. Since the juice from the grinding section is not mainly produced by extrusion, the pomace will not form a high pressure, so it is not easy to block the lower filter gap. In particular, we can make the grinding section and the lower filter gap correspond in height, so that the juice formed in the grinding section can quickly flow out through the lower filter gap, and the material in the squeezing section will not block the lower filter gap.

That is to say, the material is squeezed in the squeezing section to form juice, which is filtered through the lower filter gap of the grinding section and then flows out. When the material moves from top to bottom in the squeeze cylinder, there is a process of gradually increasing the pressure, and then properly releasing it to avoid the high-pressure material squeezing into the lower filter gap and causing blockage.

As a preferred solution, as shown in Figures 10 and 11, we can set a number of matching tooth grooves 41b evenly distributed in the circumferential direction at the lower end of the extrusion cylinder 4b. Correspondingly, the bottom of the juice collection cavity is provided with a circle The lower juice outlet tooth 25b, the lower juice outlet tooth 25b and the corresponding matching tooth groove 41b are inserted and cooperated to form the lower filtering gap 26b. It is understandable that we can precisely control the matching gap between the two sides of the lower juice tooth and the matching tooth groove by setting and adjusting the width of the lower juice tooth and the matching tooth groove, and thus conveniently control the size of the lower filter gap .

In order to facilitate the positioning of the lower end of the squeeze cylinder, we can also provide at least one positioning tooth groove at the lower end of the squeeze cylinder, and the bottom of the juice chamber is provided with a lower positioning tooth that fits in the positioning tooth groove, so that the squeeze cylinder Accurate positioning in the circumferential direction will help to form a uniform lower filtering gap on both sides of the lower juice extraction tooth and the matching tooth groove, ensuring the filtering effect and juice extraction efficiency of the lower filtering gap.

Preferably, we can set 3 positioning tooth grooves, and the 3 positioning tooth grooves are evenly distributed in the circumferential direction. Correspondingly, 3 lower positioning teeth are arranged at the bottom of the juice chamber, which is not only helpful for improving the reliability of positioning, but also for Positioning of the squeeze cylinder in multiple circumferential positions.

In particular, we can make the shape and size of the positioning tooth groove the same as that of the matching tooth groove, and the shape of the lower positioning tooth is the same as that of the lower extraction tooth, and the width of the lower extraction tooth is smaller than the width of the lower positioning tooth. In other words, we can use three of the matching tooth slots as positioning tooth slots, and increase the width of the three lower juice teeth to make them become the lower positioning teeth matching the matching tooth slots. When the matching tooth groove is matched with the lower positioning tooth, the matching tooth groove becomes the positioning tooth groove. The lower positioning tooth can be considered as the lower squeezing tooth with a smaller matching gap with the matching tooth groove. In this way, the squeeze cylinder can be easily installed in the squeeze cylinder. When the matching tooth grooves and the lower end of the narrower juice teeth form a plug-in fit, the lower filtering gap is formed; when the matching tooth grooves and the lower width are wider When the positioning teeth form a plug-in fit, they play a role in positioning the extrusion cylinder.

Further, as shown in Figures 11 and 12, we can also provide a circular reinforcement ring 27b on the bottom wall of the juice collection cavity 2b, and the lower juice outlet teeth are integrally connected to the inner wall of the reinforcement ring, so that the reinforcement ring, The lower juice outlet teeth and the bottom wall of the juice collection cavity form an integral structure, which can effectively increase the bending strength of the lower juice outlet teeth in the radial direction and avoid the phenomenon of root fracture when they are squeezed. Of course, the lower positioning teeth are also integrally connected to the inner side wall of the reinforcement ring. When we install the squeeze cylinder into the juice collection cavity, the lower end of the squeeze cylinder fits in the reinforcement ring, so that a buffer gap 45b is formed between the outer side wall of the lower end of the squeeze cylinder and the inner side wall of the reinforcement ring, and the squeeze The lower end of the cylinder realizes the central positioning; the lower juice extraction teeth are inserted into the matching tooth grooves at the lower end of the squeeze cylinder to form the lower filter gap while positioning the squeeze cylinder in the circumferential direction, and the lower filter gap is connected with the buffer gap.

For this reason, the present invention also includes a precipitation step in the grinding filtration step:

The juice at the bottom of the juice collection cavity is filtered through the lower filter gap and then enters the buffer gap. Due to the blocking effect of the reinforcing ring, the juice cannot flow out directly. At this time, the level of the juice gradually rises. When the level of the juice exceeds the upper edge of the reinforcing ring At this time, the upper juice flows out over the upper edge of the reinforcing ring, and the trace pomace mixed in the juice settles on the bottom of the buffer gap under the action of its own gravity, thereby effectively improving the purity and taste of the juice.

Furthermore, the lower filter gap includes a mating section 251b close to the screw and a releasing section 252b far from the screw, and the gap of the releasing section 252b is larger than the gap of the mating section 251b. In other words, the lower filtering gap may be a bell mouth shape or a stepped shape with a small inside and a large outside in the radial direction. Correspondingly, the grinding and filtering step includes:

Filtration stage: At this time, the juice enters the release section after filtering through the matching section, the pomace in the juice remains in the squeeze cylinder, and the matching section with a small gap can effectively filter the juice mixed with pomace;

Pressure relief stage: The juice flows out through the release section, and the flow resistance of the release section with a larger gap to the juice is greatly reduced, thereby improving the flow rate and juice output efficiency of the juice out of the lower filter gap per unit time. In addition, the pressure and flow rate of the juice in the release section will be reduced, which is beneficial for the juice to effectively precipitate the pomace in the buffer gap.

In order to improve the grinding effect, the present invention is provided with an axially extending grinding rib 42b on the inner side wall of the lower end of the squeeze cylinder or the inner side wall of the lower juice extraction tooth, and the axial length of the grinding rib corresponds to the height of the grinding section.

In this way, in the grinding and filtering step, when the material is pushed by the screw to the lower part of the extrusion barrel corresponding to the grinding section, the axially arranged grinding ribs form a sufficient grinding effect on the rotating material, so that the material can be quickly ground to produce Juice and finely crushed pomace, and the juice formed in the grinding section can quickly flow out through the lower filter gap.

As shown in Fig. 13, as a preference, the upper part of the squeeze cylinder in this embodiment includes a juice outlet area 43b, and a plurality of upper filtering slits 44b arranged side by side and extending in the axial direction are provided in the juice outlet area 43b. The juice extraction method further includes An upper filtering step between the cutting step and the extrusion step:

A part of the juice formed by the spiral shear of the material in the shearing step directly flows out through the upper filter gap, and the other part of the juice that is too late to flow out flows down the inner wall of the squeeze cylinder.

In other words, the height of the upper filter gap and the axial length correspond to the crushing section of the screw, so as to ensure that the juice flows out in the shortest path to maximize the juice output speed. Since the materials in the shearing step basically exist in the form of small pieces, the content of pomace or fine materials in the juice at this time is extremely small, especially, the juice and materials in the crushing section will not form a high pressure Therefore, the juice at this time "flows" out of the upper filtering gap along the inner wall of the squeeze cylinder, and a small amount of fine materials mixed in the juice will follow the rest of the juice to flow down under the action of gravity, and then Can ensure the purity of the juice. The axially arranged upper filtering gap can increase the total area of the upper filtering gap, so that the juice has a sufficient opportunity to flow out during the flow from top to bottom.

It can be understood that because the gap between the screw body and the extrusion barrel gradually decreases from top to bottom, when the material gradually moves from top to bottom in the crushing section, it will not only be sheared by the spiral, but also It is squeezed to form a small amount of finely divided material, and the more the material moves downward, the more finely divided material will be.

Preferably, we can gradually reduce the width of the upper filter gap from top to bottom. In this way, the relatively pure juice initially formed in the shearing step can quickly flow out through the upper part of the wider upper filter gap, which is beneficial to increase the juice output speed under the premise of ensuring the purity of the juice. The mixed fine materials in the juice formed by the materials moved down will gradually increase. At this time, the lower part of the upper filtering slit with a narrow width can effectively filter the juice, thereby ensuring the purity and good taste of the juice.

It is understandable that when starting to squeeze the juice, the material contains more juice. At this time, more juice will be formed by shearing, squeezing, and grinding. In other words, during the entire juice extraction process, the amount of juice per unit time will gradually decrease.

Further, the present invention further includes a secondary filtering step after the grinding and filtering step:

When the amount of juice produced is much greater than the amount of juice that flows out through the upper filter gap and the lower filter gap in one upper filtration step, grinding filtration step, part of the juice that is too late to flow out through the lower filter gap will accumulate at the bottom of the juice collection cavity , The part of the juice accumulated at the bottom of the juice chamber rises and surges upward, and then flows out after being filtered through the upper filter gap. On the one hand, it can increase the juice output speed, and on the other hand, it can effectively prevent the upwelling juice from crossing the squeeze cylinder The upper edge directly enters the juice collection cavity, so that the upper filter gap and the corresponding secondary upper filter step play an overflow function similar to an "overflow valve".

Furthermore, as shown in Fig. 14, we can make the upper filter gap be inclined in the radial direction of the screw, that is, the side surface of the upper filter gap deviates from the radial direction and forms an angle with respect to the radial direction. Specifically, the side surface of the upper filtering slit is inclined from the outside to the inside in the radial direction toward the front side of the rotation direction of the screw during juice extraction. In this way, the filtering steps include:

Juice output stage: a part of the juice formed by shearing flows out through the inclined upper filter gap;

Blocking stage: The material moving along the inner side wall of the squeeze cylinder is subjected to an inward force formed by a side wall of the upper filter gap on the front side of the screw rotation direction, and moves down to the squeezing section.

It should be noted that when squeezing juice, a certain point on the surface of the screw rotates from the rear side to the front side, and a side wall of the upper filter gap in the front side of the screw rotation direction faces the material pushed by the screw.

In addition, the material is sheared and broken into lumps and a small amount of fine particles in the crushing section. The lumpy materials will not be squeezed out from the upper filter gap, only the fine particles can be squeezed out through the upper filter gap.

When the screw drives the block and fine granular materials to rotate and the fine granular materials move to the upper filter gap, the side wall of the upper filter gap in the front side of the screw rotation direction will form an inwardly inclined force on the material. The force forms a radially inward component, which resists the radially outward squeezing force exerted by the screw on the fine particles, thereby effectively preventing the material from being squeezed out through the upper filter gap.

The above are only preferred embodiments of the present invention, and are not used to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention. Give another example.

Claims (16)

1. A vertical screw extrusion juice extractor includes a base, a juice collecting cavity arranged on the base, a screw longitudinally arranged in the juice collecting cavity, and a cover on the upper cover of the juice collecting cavity. There is a juice outlet and a slag outlet, the machine base is equipped with a motor, the screw includes a screw shaft and a screw body, and the screw body is provided with a screw, characterized in that the screw is also sleeved with an extrusion barrel, so The squeeze cylinder is detachably arranged relative to the juice collection cavity, the squeeze cylinder includes a cylindrical body with upper and lower openings, the bottom wall of the juice collection cavity is provided with a limit ring, and the lower part of the squeeze cylinder is inserted into the limit ring. Fit and form the lower filter gap.
2. The vertical screw extrusion juice extractor according to claim 1, wherein the lower part of the squeeze cylinder is provided with openings at a circumferential interval, and the limit ring is provided at a circumferential interval with the openings. A matching protrusion, the protrusion extends into the opening to form the lower filter gap.
3. The vertical screw extrusion juice extractor according to claim 2, wherein the lower filtering gap includes a gap formed between the side wall of the protrusion and the side wall of the opening.
4. The vertical screw extrusion juice extractor according to claim 2, wherein the limiting ring comprises an annular wall, and the lower filter gap is at least partially located in the annular wall.
5. The vertical screw extrusion juice extractor according to claim 4, characterized in that the protrusions are circumferentially fixedly arranged in the annular wall, and the limit ring is also provided for positioning the lower part of the extrusion cylinder The positioning structure.
6. The vertical screw extrusion juice extractor according to claim 1, wherein the lower part of the side wall of the extrusion barrel is inserted into the limit ring, and the lower filter gap includes the extrusion barrel The gap formed between the outer side wall of the retaining ring and the inner side wall of the limit ring.
7. The vertical screw extrusion juicer according to claim 1, wherein the upper end of the cylindrical body is provided with an upper filter gap, the cylindrical body includes an annular side wall, and the upper end of the annular side wall is provided with A plurality of grid bars, the upper filtering gap is formed between adjacent grid bars.
8. The vertical screw extrusion juice extractor according to claim 7, wherein the cylindrical body is further provided with ribs that cooperate with the screw to extrude materials, and the ribs are arranged on the annular side wall On the upper side, at least part of the ribs are arranged between the upper filter gap and the lower filter gap.
9. The vertical screw extrusion juice extractor according to claim 7, wherein the effective diameter of the squeeze cylinder is set at least partially from top to bottom, and the upper filter gap is vertically set at Squeeze the upper part of the barrel.
10. The vertical screw extrusion juice extractor according to claim 1, wherein the inner side wall of the cylindrical body is provided with crushing ribs that cooperate with the screw to extrude crushed materials, and the crushing ribs face A blade is provided on one side of the screw rotation direction.
11. The vertical screw extrusion juice extractor according to claim 10, wherein the crushed ribs comprise coarse crushed ribs and fine crushed ribs, and the top surface of the coarse crushed ribs is higher than that of the fine crushed ribs. And the height of the coarse crushing rib protruding from the inner wall of the cylindrical body gradually decreases from top to bottom.
12. The vertical screw extrusion juice extractor according to claim 10, wherein the lower part of the squeeze cylinder is provided with circumferentially spaced openings, and protrusions are formed between adjacent openings. Grinding ribs are arranged on the inner wall, and the grinding ribs are located below the crushing ribs.
13. The vertical screw extrusion juice extractor according to claim 1, wherein the upper cover is provided with a positioning ring for positioning the upper end of the extrusion cylinder, and the positioning ring is at least partially sleeved on the cylinder. Outside the body.
14. The vertical screw extrusion juice extractor according to claim 1, wherein the limiting ring and the juice collecting cavity are integrally provided, and the residue outlet is located in the limiting ring.
15. The vertical screw extrusion juice extractor according to claim 7, wherein the width of the upper filter gap is W, 0.3mm≤W≤5mm, and the dynamic gap of the lower filter gap is I, 0.2mm≤I≤1.5mm.
16. The vertical screw extrusion juicer according to claim 5, wherein the positioning structure comprises a positioning protrusion, at least one of the protrusions is a positioning protrusion, and the positioning protrusion is inserted The opening and anti-rotation positioning of the squeeze cylinder.

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