Juicer pressing component

Abstract

The utility model relates to a juicer squeezing assembly, the juicer comprises a screw, including a screw body and a spiral arranged on the outer surface of the screw body; a pressure plate, installed on the upper end of the screw body, the lower surface of which gradually bends and extends upward from the center to the outside, and has a drop opening for passing materials; the spiral has a main spiral that bends upward along the lower surface of the pressure plate, the upper surface of the main spiral and the lower surface of the pressure plate cooperate to form a shearing zone, a first cutting edge is provided on the lower surface of the pressure plate near the drop opening, and a second cutting edge that cooperates with the first cutting edge for shearing is provided at the material-facing end of the main spiral along the rotation direction of the screw. The technical solution of the utility model makes it difficult for materials to adhere to the upper surface of the main spiral, thus avoiding oxidation of the materials, and ensuring that the materials that fall into the upper surface of the main spiral can fall into the grinding section of the screw, thereby improving the juice extraction efficiency, and more materials at the edge of the shearing zone can be cut.

Description

Technical Field

[0001] The utility model relates to the technical field of food processing machines, in particular to a juicer pressing component for improving the taste of juice. Background Art

[0002] The juicer is developed on the basis of the conventional juicer, and its main function is to turn fruits into juice to improve the taste and facilitate drinking. Compared with the juicer, it obtains juice through low-speed spiral extrusion. The lower the extrusion speed, the better. The juice is squeezed out slowly like a towel, without destroying the cell structure of the fruit, and the nutrition of the fruit is preserved. Moreover, low-speed juice extraction does not generate high heat, and also avoids the problem of heat oxidation of juice. In the related art, small juicers, due to the size limitation of the internal juicing components, the input ingredients need to be cut into very small sizes to complete the juicing. This requires the user to cut the ingredients before juicing, which has the disadvantage of inconvenience in use.

[0003] In order to solve the above technical problems, in the related technology, application number CN201720261684.X, utility model name "A multifunctional vertical screw juicer", discloses that the screw is provided with a cutting part, and the arc-shaped knife on the cutting part cuts the falling material once, and then falls into the spiral of the screw to be squeezed. The technical problem existing in this technical scheme is: although there is an extrusion and crushing effect between the cutting part and the upper cover, and the arc-shaped knife is also used to cut the material; however, since the upper surface of the cutting part and the lower surface of the upper cover are both arranged horizontally, some materials (for example, celery, peel, etc.) are tightly attached to the upper surface of the cutting part under the action of their own gravity, which causes the material to idle with the screw and cannot be effectively cut, and the material falling into the grinding and juicing section is reduced, reducing the juice yield.

[0004] Application number CN201990001351.0, the name of the utility model is "A juicer", which discloses that a single blade is formed at the upper end of the screw body. Combined with the attached drawings, it can be seen that a single blade is formed at the upper end of the screw body, and the single blade extends horizontally along the bottom surface of the hopper. The technical problem existing in this technical solution is: since the upper surface of the single blade and the bottom surface of the hopper are both arranged horizontally, some materials (for example, celery, peel, etc.) are tightly attached to the upper surface of the single blade under the action of their own gravity, which causes the material to idle with the single blade and cannot be effectively cut, and the material falling into the grinding and juicing section is reduced, reducing the juice yield, and because the amount of material attached to the upper surface of the cutting part is too much, even after a period of time, a large extrusion force is generated between the cutting part and the upper cover, and part of the material on the upper surface of the single blade is squeezed off, but due to the long attachment time, the material is at risk of being oxidized, affecting the taste.

[0005] Application number CN202223023022.9, the name of the utility model is "A food processor with a stable juicing structure", which discloses that the upper surface of the main spiral is arranged along the bottom surface of the pressing plate, and it can be seen from the attached figure that the upper surface of the main spiral and the bottom surface of the pressing plate are both arranged horizontally. The technical problem existing in this technical scheme is: because the upper surface of the main spiral and the bottom surface of the pressing plate are both arranged horizontally, some materials (for example, celery, peel, etc.) are tightly attached to the upper surface of the main spiral under the action of their own gravity, which causes the material to idle with the screw and cannot be effectively cut, and the material falling into the grinding and juicing section is reduced, reducing the juice yield; and once the attachment time is too long, the food is also easy to oxidize, affecting the taste.

[0006] The above-mentioned disclosed technical solutions all have the following technical problems: the bottom surface of the hopper or the pressure plate and the upper surface of the main spiral of the screw are all arranged horizontally, and some materials are easily attached to the upper surface of the single blade, resulting in ineffective cutting, and the material falling into the grinding and juicing section is reduced, thereby reducing the juice yield; secondly, even after a period of time, part of the material on the upper surface of the single blade is squeezed off under the action of the extrusion force, but due to the long attachment time, the material is at risk of being oxidized, affecting the taste. Utility Model Content

[0007] The utility model aims to provide a juicer squeezing component, which can improve the technical problems of material adhering to the main spiral of the screw rod, low juice yield and poor juice taste.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A juicer squeezing assembly, comprising:

[0010] A screw rod, comprising a screw rod body and a spiral arranged on the outer surface of the screw rod body;

[0011] A pressing plate is installed at the upper end of the screw body, the lower surface of which is gradually bent and extended upward from the center to the outside, and has a drop opening for passing the material;

[0012] The spiral has a main spiral that bends upward along the lower surface of the pressure plate, the upper surface of the main spiral and the lower surface of the pressure plate cooperate to form a shearing zone, the lower surface of the pressure plate is provided with a first cutting edge near the blanking port, and the main spiral is provided with a second cutting edge that cooperates with the first cutting edge for shearing along the material-meeting end along the rotation direction of the screw.

[0013] Preferably, the shear zone gradually decreases along the rotation direction of the screw.

[0014] Preferably, the lower surface of the pressure plate is recessed inward to form a groove, and an edge of the groove facing the second cutting edge along the rotation direction of the screw is the first cutting edge; or, the lower surface of the pressure plate protrudes outward to form a protrusion, and an edge of the protrusion on one side close to the blanking port is the first cutting edge.

[0015] Preferably, at least part of the first cutting edge is arc-shaped, straight-line-shaped, sawtooth-shaped, or broken-line-shaped, and at least part of the second cutting edge is arc-shaped, straight-line-shaped, sawtooth-shaped, or broken-line-shaped.

[0016] Preferably, the first cutting edge is arc-shaped, the second cutting edge is sawtooth-shaped, the end of the second cutting edge has a puncturing portion, and the puncturing portion cooperates with the first cutting edge for shearing; the puncturing portion and the main spiral are on the same plane, or the top end of the puncturing portion is bent upward and protrudes from the main spiral.

[0017] Preferably, the distance between the first cutting edge and the second cutting edge is 0.5-2 mm.

[0018] Preferably, the main spiral includes a cutting portion, and the second cutting edge is provided at the material-facing end of the cutting portion along the rotation direction of the screw, the projection area of ​​the upper end face of the cutting portion is S1, the projection area of ​​the blanking port is S2, and S2:S1 is 1-3.

[0019] Preferably, the main spiral also includes an extrusion portion adjacent to the cutting portion, and one of the cutting portion or the extrusion portion is formed with a notch connected to the blanking port, the notch is spaced apart from the second cutting edge, and the projection area of ​​the notch is S3, and S2:S3 is 4-6.

[0020] Preferably, the spiral also has a secondary spiral located on the side of the main spiral away from the pressing plate, an extrusion channel is formed between the main spiral and the secondary spiral, the axial height of the extrusion channel is H1, the juicer squeezing assembly also includes a cutting piece fixedly connected to the screw and pre-crushing the material, the distance between the upper end of the cutting piece and the upper end surface of the pressing plate is H2, and H1:H2 is 0.3-1.

[0021] Preferably, the curvature of the lower surface of the pressing plate is 0.005-0.15.

[0022] The beneficial effects of the utility model are:

[0023] 1. The utility model provides a juicer squeezing assembly, in which the lower surface of the pressing plate is gradually bent and extended upward from the center to the outside, and the main spiral of the spiral is also bent upward along the lower surface of the pressing plate, and the shape of the lower surface of the pressing plate is adapted to the shape of the upper surface of the cutting portion; the component force of the material's gravity provides a driving force for movement toward the center, so that the material can produce relative movement on the main spiral, and the material is not easy to adhere to the upper surface of the main spiral, which effectively ensures that the material falling into the upper surface of the main spiral can fall into the screw grinding section, thereby improving the juice extraction efficiency; and the material can fall into the screw grinding section in time, effectively avoiding the oxidation of the material and ensuring the taste of the juice. Secondly, a shear zone is formed between the upper surface of the main spiral and the lower surface of the pressing plate, and the shear zone also gradually rises from the center to the outside. When the material enters the shear zone, the component of the material's own gravity provides a driving force for movement toward the center, making it difficult for the material at the outer edge of the shear zone to fall directly into the grinding section, thereby making it more likely that the material at the edge of the shear zone will be sheared between the first cutting edge and the second cutting edge; at the same time, after the material falls from the drop port, especially the material at the edge of the main spiral, it first runs a distance toward the center and then is sheared when passing the first cutting edge on the pressing plate, which greatly increases the material running path. While ensuring that the material is not oxidized, the time for the material to enter the grinding section of the screw is delayed as much as possible, so that the grinding and juicing speed matches the speed at which the material falls, and the material entering the grinding section of the screw is more delicate, reducing the burden of the screw squeezing juice, and greatly improving the juice yield.

[0024] 2. The shear zone gradually decreases along the direction of screw rotation. In the shear zone, the particle size of the material close to the blanking port is relatively large, and the particle size of the material far away from the blanking port is relatively small. The particle size of the material is squeezed and crushed and gradually becomes smaller. The height change of the shear zone is consistent with the crushing process of the material, so that materials of different particle sizes can be fully crushed in the shear zone, reducing the pressing burden of the screw, thereby reducing the motor load.

[0025] 3. When both the first cutting edge and the second cutting edge are arc-shaped, the arc shape can increase the shear path, allowing the material to be fully cut for the third time; at the same time, there is no turning point in the entire arc, so there will be no material jamming at the turning point, ensuring that the material can fall smoothly into the grinding section of the screw. When the first cutting edge is arc-shaped and the second cutting edge is sawtooth-shaped, the end of the second cutting edge has a puncturing portion. After the material falling from the blanking port to the upper surface of the main spiral is inserted into the puncturing portion, it can increase the resistance of the material falling to the screw, thereby preventing the material from quickly entering the grinding section of the screw; if the puncturing portion and the main spiral are on the same plane, the contact area between the sawtooth-shaped puncturing portion and the material is increased, and in the process of shearing in cooperation with the puncturing portion and the first cutting edge, the shearing can be more sufficient, so that the material entering the grinding section of the screw is finer, thereby improving the juice extraction efficiency and juice yield; if the top of the puncturing portion bends upward and protrudes from the main spiral, as soon as the material falls from the blanking port to the upper surface of the main spiral, the puncturing portion can first crush the material, and then introduce it into the next shearing zone, so that the particle size of the material entering the shearing zone is smaller, and at the same time, this puncturing action is carried out in continuity with the action of the material falling from the blanking port, so that the entire material running time is shortened as much as possible while ensuring the balance between the screw biting speed and the blanking speed.

[0026] 4. The upper surface of the cutting part and the lower surface of the pressing plate cooperate to form a shearing zone. When S2:S1 is 1-3 and S2:S3 is 4-6, within the same time, the material discharge speed of the blanking port, the material receiving speed of the upper surface of the cutting part and the material passing speed of the gap are balanced. The material entering the blanking port can be divided into two ways to enter the shearing zone and the gap respectively, which effectively avoids too much material falling into the grinding section of the screw before passing through the shearing zone or the gap, strengthens the balance between the blanking speed and the screw biting speed, makes the juice output rate higher, and ensures that the material can be evenly distributed in the spirals on the left and right sides of the screw body, thereby effectively avoiding the screw from producing Radial disturbance; if S2:S1 is less than 1 and S2:S3 is less than 4, the feeding opening is too small, resulting in a slow feeding speed. The cutting part and the notch have no material to receive for some time and are in an idling state, resulting in a waste of resources. At the same time, the material is prone to oxidation during long-term operation; if S2:S1 is greater than 3 and S2:S3 is greater than 6, the feeding opening is too large, resulting in a fast feeding speed. The cutting part and the notch have no time to receive the material. Some of the material is squeezed into the grinding section of the screw before entering the shear zone or the notch, making the feeding speed greater than the screw's biting and juicing speed, and the material cannot be fully squeezed for juice, reducing the juice yield.

[0027] 5. When H1:H2 is 0.3-1, the amount of material within the height range of H1, after multiple pre-cutting, enters the extrusion channel of the screw biting section. The biting amount and the material pre-cutting amount are greatly balanced, reducing the burden of the screw to squeeze out juice, making the material entering the screw grinding section more delicate, and greatly improving the juice yield. When H1:H2 is greater than 1, the biting speed is greater than the material pre-cutting speed, and the extrusion channel may sometimes be in an idling state, resulting in a waste of resources, while extending the running time of the material and prone to oxidation. When H1:H2 is less than 0.3, the biting speed is less than the material pre-cutting speed, the amount of material in the extrusion channel is oversaturated, which increases the burden of the screw to squeeze out juice, and the material cannot be fully squeezed to extract juice, reducing the juice yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of a juicer squeezing assembly according to an embodiment of the utility model.

[0030] Figure 2 for Figure 1 Schematic diagram of the structure of the pressure plate shown.

[0031] Figure 3 It is a top view of a juicer squeezing assembly according to one embodiment of the utility model.

[0032] Figure 4 It is a top view of a juicer squeezing assembly according to another embodiment of the present invention.

[0033] Figure 5 for Figure 1 Schematic diagram of the structure of the screw shown.

[0034] Figure 6 It is a structural schematic diagram of the juicer squeezing assembly from another perspective in an embodiment of the utility model.

[0035] Figure 7 It is a structural schematic diagram of the juicer squeezing assembly from another perspective in the embodiment of the utility model.

[0036] The names of the components in the figure are as follows:

[0037] 1. Screw; 11. Screw body; 12. Main spiral; 121. Second cutting edge; 1211. Puncture portion; 122. Cutting portion; 123. Extrusion portion; 124. Notch; 13. Secondary spiral; 14. Extrusion channel; 2. Press plate; 21. Blanking port; 22. First cutting edge; 23. Groove; 3. First cutting edge; 4. Second cutting edge. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] See also Figure 1-Figure 7 The embodiment of the utility model provides a juicer squeezing assembly, comprising a screw 1, a pressing plate 2 and a cutting member. The cutting member comprises a first cutting edge 3 and a second cutting edge 4, wherein the first cutting edge 3 is mounted above the pressing plate 2, and the second cutting edge 4 spirally extends upward along the rotation center, and the tip of the first cutting edge 3 and the tip of the second cutting edge 4 are bent toward each other.

[0040] The screw 1 comprises a screw body 11 and a spiral arranged on the outer surface of the screw body 11; the pressing plate 2 is installed on the upper end of the screw body 11, and the lower surface is gradually bent and extended upward from the center to the outside, and has a blanking port 21 for passing the material; the spiral has a main spiral 12 bent upward along the lower surface of the pressing plate 2, the upper surface of the main spiral 12 and the lower surface of the pressing plate 2 cooperate to form a shearing zone, the lower surface of the pressing plate 2 is provided with a first cutting edge 22 near the blanking port 21, and the main spiral 12 is provided with a second cutting edge 121 that cooperates with the first cutting edge 22 for shearing along the material-meeting end of the screw 1 in the rotation direction.

[0041] It can be understood that the lower surface of the pressing plate 2 gradually bends upward from the center to the outside, and the main spiral 12 of the spiral also bends upward along the lower surface of the pressing plate 2, and the shape of the lower surface of the pressing plate 2 is adapted to the shape of the upper surface of the cutting portion 122. The component force of the material's gravity provides a driving force for movement toward the center, so that the material can produce relative movement on the main spiral 12, so that the material is not easy to be tightly attached to the upper surface of the main spiral 12, effectively ensuring that the material falling into the upper surface of the main spiral 12 can fall into the grinding section of the screw 1, thereby improving the juice extraction efficiency; and the material can fall into the grinding section of the screw 1 in a timely manner, effectively preventing the material from being oxidized, and ensuring the taste of the juice.

[0042] Secondly, a shearing zone is formed between the upper surface of the main spiral 12 and the lower surface of the pressing plate 2, and the shearing zone also gradually rises from the center to the outside. When the material enters the shearing zone, the component force of the material's own gravity provides a driving force for movement toward the center, making it difficult for the material located at the outer edge of the shearing zone to fall directly into the grinding section, thereby making it more likely that the material located at the edge of the shearing zone can be sheared between the first cutting edge 22 and the second cutting edge 121; at the same time, after the material falls from the drop port 21, especially the material at the edge of the main spiral 12, it first runs a distance toward the center, and then is sheared when passing the first cutting edge 22 on the pressing plate 2, which greatly increases the material running path, delays the time for the material to enter the grinding section of the screw 1, matches the grinding and juicing speed with the material falling speed, and also makes the material entering the grinding section of the screw 1 more delicate, reduces the burden of the screw 1 in squeezing out juice, and greatly improves the juice yield.

[0043] Working process: the material enters the feed barrel and is first pierced and cut into larger pieces by the second cutting edge 4, which is the first pre-cutting; the material falls onto the pressing plate 2, and the first cutting edge 3 and the blanking port 21 cooperate to shear it into smaller pieces, which is the second pre-cutting; after the material enters the blanking port 21, a part of the material accumulates in an area of ​​the screw 1 close to the pressing plate 2. During the rotation of the screw 1, the first cutting edge 22 and the second cutting edge 121 meet to shear the smaller pieces of material into fine materials with smaller particle sizes, which is the third pre-cutting; the fine material is then squeezed out by the screw 1 and the juicer barrel.

[0044] After three pre-cuttings, the material is fully crushed, so that larger pieces of material will not enter the grinding section of the screw 1 in advance, reducing the burden of the screw 1 in squeezing larger pieces of material, avoiding the impact of large pieces of material on the grinding section of the screw 1, and effectively avoiding radial disturbance of the screw 1; at the same time, a shear zone is formed between the upper surface of the main spiral 12 and the lower surface of the pressing plate 2, which also plays a role in caching the material, slowing down the speed of the material falling to the grinding section, achieving a great balance between the screw 1 biting speed and the material dropping speed, effectively avoiding the accumulation of a lot of material in the screw 1, so that the material is fully squeezed in the grinding section of the screw 1, greatly improving the juice yield. In addition, a part of the material follows the rotation direction of the screw 1 and enters between the lower surface of the pressing plate 2 and the upper surface of the main spiral 12 through the dropping port 21. Due to the existence of the pressing plate 2, a part of the material is squeezed between the pressing plate 2 and the main spiral 12 before being cut by the first cutting edge 22 and the second cutting edge 121, which further helps to crush the material into smaller pieces.

[0045] In order to achieve effective cutting of the first cutting edge 22 and the second cutting edge 121, the distance between the first cutting edge 22 and the second cutting edge 121 can be set to 0.5-2 mm. If the distance between the first cutting edge 22 and the second cutting edge 121 is too large, the first cutting edge 22 and the second cutting edge 121 will not be able to effectively cut the material. If the distance between the first cutting edge 22 and the second cutting edge 121 is too small, the actual processing accuracy is difficult to achieve. The distance between the first cutting edge 22 and the second cutting edge 121 is preferably 1 mm.

[0046] The curvature of the lower surface of the pressing plate 2 is 0.005-0.15, and a certain curve in the radial direction of the lower surface of the pressing plate 2, in this embodiment, the curvature value of the curve in the radial direction is variable. In other embodiments, the curvature can be a constant value, for example, a segment of an arc of a whole circle. Preferably, the maximum value of the curvature of a certain curve on the lower surface of the pressing plate 2 is 0.147, and the minimum value is 0.01; or, the maximum value of the curvature of a certain curve on the lower surface of the pressing plate 2 is 0.0512, and the minimum value is 0.0091. It can be understood that when the curvature of the lower surface of the pressing plate 2 is 0.005, the component force of the gravity of the material can just allow the material to move toward the center, so that the material can produce relative movement on the main spiral 12, so that the material is not easy to be tightly attached to the upper surface of the main spiral 12, effectively ensuring that the material falling into the upper surface of the main spiral 12 can fall into the grinding section of the screw 1, thereby improving the juice extraction efficiency; and the material can fall into the grinding section of the screw 1 in time, effectively avoiding oxidation of the material, and ensuring the taste of the juice. When the curvature of the pressing plate 2 is too large, the material will accumulate to the center too quickly, causing the material to be stuck in the center and causing radial disturbance of the screw 1. When the curvature of the pressing plate 2 is too small, the component force of the material gravity cannot move the material to the center, and the material still adheres tightly to the upper surface of the main screw 12.

[0047] like Figure 1-Figure 2 As shown, the shearing zone gradually decreases along the rotation direction of the screw 1. After the material falls from the blanking port 21, it is brought into the shearing zone along the rotation direction of the screw 1. In the shearing zone, smaller pieces of material are squeezed and crushed between the pressure plate 2 and the main screw 12. The height of the side of the shearing zone close to the blanking port 21 should be set larger to allow materials with relatively large particle sizes to enter; and the height of the side of the shearing zone away from the blanking port 21 should be set smaller to allow materials with relatively small particle sizes to enter after being pre-extruded in the shearing zone, so that materials with relatively small particle sizes can continue to be squeezed and crushed at this place, and finally sheared into fine materials by the first cutting edge 22 and the second cutting edge 121. Therefore, in the shearing zone, the particle size of the material gradually decreases after extrusion and crushing, and the height change of the shearing zone is consistent with the crushing process of the material, so that materials of different particle sizes can be fully crushed in the shearing zone, reducing the pressing burden of the screw 1, thereby reducing the motor load.

[0048] There are two ways to set the first cutting edge 22: Figure 1-Figure 2As shown, the lower surface of the pressing plate 2 may be recessed inward to form a groove 23, and an edge of the groove 23 facing the second cutting edge 121 along the rotation direction of the screw 1 is the first cutting edge 22. The lower surface of the pressing plate 2 may also protrude outward to form a convex portion, and an edge of the convex portion close to the blanking port 21 is the first cutting edge 22.

[0049] It is understandable that the groove 23 and the upper surface of the main spiral 12 cooperate to form a shearing zone, or the protrusion and the upper surface of the main spiral 12 cooperate to form a shearing zone. Along the rotation direction of the screw 1, the first cutting edge 22 is located on the side of the shearing zone away from the blanking port 21, that is, located "downstream" of the shearing zone. Without changing the configuration of the upper surface of the main spiral 12, the axial height of the groove 23 along the rotation direction of the screw 1 gradually decreases, or the axial height of the protrusion along the rotation direction of the screw 1 gradually increases, so that the first cutting edge 22 and the second cutting edge 121 are the smallest upper and lower spacing in the entire shearing zone, so that the material can be effectively sheared at this point.

[0050] Shape of cutting edge: The first cutting edge 22 is at least partially arc-shaped, straight-line, sawtooth-shaped, or broken-line-shaped, and the second cutting edge 121 is at least partially arc-shaped, straight-line, sawtooth-shaped, or broken-line-shaped. It should be noted that a portion of the first cutting edge 22 is arc-shaped, and another portion of the first cutting edge 22 is straight-line, sawtooth-shaped, or broken-line-shaped. A portion of the second cutting edge 121 is arc-shaped, and another portion of the second cutting edge 121 is straight-line, sawtooth-shaped, or broken-line-shaped, and the composition of each cutting edge can be in a variety of combinations, as long as it can effectively shear the material.

[0051] As a preferred embodiment, Figure 2-Figure 3 As shown, the first cutting edge 22 and the second cutting edge 121 are both arc-shaped, which can increase the shear path and allow the material to be fully cut for the third time; at the same time, there is no turning point in the entire arc, so there will be no material jamming at the turning point, ensuring that the material can smoothly fall into the grinding section of the screw 1.

[0052] As a preferred embodiment, Figure 2 , Figure 4 As shown, the first cutting edge 22 is arc-shaped, the second cutting edge 121 is sawtooth-shaped, the end of the second cutting edge 121 has a puncturing portion 1211, and the puncturing portion 1211 cooperates with the first cutting edge 22 for shearing; the puncturing portion 1211 and the main spiral 12 are on the same plane, or the top end of the puncturing portion 1211 is bent upward and protrudes from the main spiral 12.

[0053] It can be understood that the second cutting edge 121 is sawtooth-shaped, and the material falling from the material outlet 21 to the upper surface of the main screw 12 is first inserted and crushed by the piercing portion 1211 when encountering the piercing portion 1211. At the same time, after the material is inserted into the piercing portion 1211, it can further increase the resistance of the material falling to the screw 1, thereby preventing the material from quickly entering the grinding section of the screw 1. When the piercing portion 1211 and the main screw 12 are on the same plane, since the piercing portion 1211 is sawtooth-shaped, the contact area between the piercing portion 1211 and the material is increased, and the piercing portion 1211 and the first cutting edge 22 cooperate in shearing, and the shearing can be more sufficient, so that the material entering the grinding section of the screw 1 is more delicate, and the juice extraction efficiency and juice yield are improved. When the top of the piercing portion 1211 bends upward and protrudes from the main screw 12, the material falls from the drop port 21 to the upper surface of the main screw 12, and the piercing portion 1211 can first crush the material and then introduce it into the subsequent shearing zone, so that the particle size of the material entering the shearing zone is smaller. At the same time, the piercing action is carried out continuously with the action of the material falling from the drop port 21. Under the condition of ensuring the balance between the biting speed of the screw 1 and the drop speed, the entire material running time is shortened as much as possible.

[0054] like Figure 5-Figure 7 As shown, further, the main screw 12 includes a cutting portion 122, and the cutting portion 122 is provided with a second cutting edge 121 at the material-facing end along the rotation direction of the screw 1, the projection area of ​​the upper end surface of the cutting portion 122 is S1, the projection area of ​​the blanking port 21 is S2, and S2:S1 is 1-3. Preferably S1 is 810mm 2 , S2 is 1535mm 2 ; or, S1 is 1430mm 2 , S2 is 1800mm 2 .

[0055] It can be understood that the upper surface of the cutting portion 122 is bent upward along the lower surface of the pressing plate 2, and the upper surface of the cutting portion 122 and the lower surface of the pressing plate 2 cooperate to form the shearing zone. When S2: S1 is 1-3, since the size of the area can determine the speed at which the material passes through, in the same time, the speed of the material passing through the blanking port 21 is adapted to the speed at which the upper surface of the cutting portion 122 receives the material, and the material received by the cutting portion 122 can just completely enter the shearing zone, and then be pre-cut for the third time, effectively avoiding too much material from falling into the grinding section of the screw 1 before passing through the shearing zone, strengthening the balance between the blanking speed and the screw 1 biting speed, and making the juice yield higher. If S2: S1 is less than 1, the blanking port 21 is too small, resulting in a slow blanking speed, and the cutting portion 122 has no material to receive for some time, and is in an idling state, resulting in a waste of resources, and at the same time, the material is prone to oxidation during long-term operation. If S2:S1 is greater than 3, the material discharge port 21 is too large, resulting in a too fast material discharge speed. The cutting portion 122 has no time to receive the material, and some of the material is squeezed into the grinding section of the screw 1 before entering the shearing zone, making the material discharge speed greater than the material biting and juicing speed of the screw 1, and the material cannot be fully squeezed for juice, thereby reducing the juice yield.

[0056] like Figure 5-Figure 7 As shown, in order to evenly distribute the materials on the left and right sides of the screw 1, the main screw 12 also includes an extrusion part 123 adjacent to the cutting part 122, and one of the cutting part 122 or the extrusion part 123 is formed with a notch 124 connected to the blanking port 21, and the notch 124 is spaced from the second cutting edge 121, and the projection area of ​​the notch 124 is S3, S2: S3 is 4-6, and S2: S1 can refer to the above content. Preferably S1 is 810mm 2 , S2 is 1535mm 2 , S3 is 275mm 2 .

[0057] It can be understood that the extrusion portion 123 is arranged in a spiral manner, such as Figure 5As shown, the notch 124 is preferably provided on the extrusion part 123, and the notch 124 is located in the area of ​​the extrusion part 123 adjacent to the cutting part 122. When the screw 1 rotates, the cutting part 122 first passes through the blanking port 21, and the upper surface of the cutting part 122 first receives a portion of the falling material, which is then sent to the material biting section of the screw 1 after the third pre-cutting. Then, the notch 124 passes through the blanking port 21. Since the area of ​​the notch 124 is not large, only materials with a smaller particle size can pass through. Therefore, a portion of the small material does not undergo the third pre-cutting, and the fineness of the material bitten by the screw 1 is also satisfied. This portion of the material falls directly into the material biting section of the screw 1 from the blanking port 21. Since the notch 124 and the second cutting edge 121 are arranged at intervals, and the notch 124 and the cutting portion 122 have a sequence of passing through the blanking port 21, the material can be evenly distributed in the spirals on the left and right sides of the screw body 11, so that the left and right sides of the screw 1 bite the material evenly, the stability of the screw 1 during operation is improved, and radial disturbance of the screw 1 is effectively avoided. If the notch 124 is arranged on the cutting portion 122, the strength requirements of the cutting portion 122 need to be ensured after the notch 124 is arranged. The working principle and technical effect are similar to those arranged on the extrusion portion 123, and will not be repeated.

[0058] When S2:S3 is 4-6, since the size of the area can determine the speed of the material passing through, in the same time, the material discharge speed of the material discharge port 21, the material receiving speed of the upper surface of the cutting part 122, and the material passing speed of the notch 124 are balanced, and the material entering the material discharge port 21 can be divided into two paths to enter the shearing zone and the notch 124 respectively, effectively avoiding too much material from falling into the grinding section of the screw 1 before passing through the shearing zone or the notch 124, strengthening the balance between the material discharge speed and the material bite speed of the screw 1, making the juice output rate higher, and ensuring that the material can be evenly distributed in the spirals on the left and right sides of the screw body 11, thereby effectively avoiding radial disturbance of the screw 1. If S2:S3 is less than 4, the material discharge port 21 is too small, resulting in too slow material discharge speed, and the cutting part 122 and the notch 124 have no material to receive for some time, and are in an idling state, resulting in a waste of resources, and at the same time, the material is prone to oxidation during long-term operation. If S2:S3 is greater than 6, the material discharge port 21 is too large, resulting in a too fast material discharge speed. The cutting portion 122 and the notch 124 are unable to receive the material in time, and part of the material is squeezed into the grinding section of the screw 1 before entering the shearing zone or the notch 124, making the material discharge speed greater than the material biting and juicing speed of the screw 1, and the material cannot be fully squeezed for juice, thereby reducing the juice yield.

[0059] like Figure 7As shown, the spiral also has a secondary spiral 13 located on the side of the main spiral 12 away from the pressing plate 2, and an extrusion channel 14 is formed between the main spiral 12 and the secondary spiral 13, and the axial height of the extrusion channel 14 is H1. The juicer squeezing assembly also includes a cutting piece fixedly connected to the screw 1 and pre-crushing the material, and the distance between the upper end of the cutting piece and the upper end surface of the pressing plate 2 is H2, that is, the distance between the top of the second cutting edge 4 and the upper end surface of the pressing plate 2 is H2, and H1:H2 is 0.3-1.

[0060] It is understandable that, since the upper surface of the pressing plate 2 is a curved arc surface, if H1 is too small, the large piece of material cannot be accommodated between the upper surface of the pressing plate 2 and the top of the second cutting edge 4, and the material will slip. The large piece of material will always be idle above the second cutting edge 4, making it difficult to perform the second pre-cutting, and the juice extraction efficiency will be greatly reduced. Preferably, H1 is 40 mm and H2 is 18 mm, or H1 is 42 mm and H2 is 24 mm.

[0061] When H1:H2 is 0.3-1, the height can determine the material capacity. The amount of material within the height range of H1, after multiple pre-cutting, enters the extrusion channel 14 of the biting section of the screw 1. The biting amount and the material pre-cutting amount are greatly balanced, reducing the burden of the screw 1 to squeeze out juice, making the material entering the grinding section of the screw 1 more delicate, and greatly improving the juice yield. When H1:H2 is greater than 1, the biting amount is greater than the material pre-cutting amount per unit time, and the extrusion channel 14 may sometimes be in an idling state, resulting in a waste of resources, while extending the running time of the material and being prone to oxidation. When H1:H2 is less than 0.3, the biting amount is less than the material pre-cutting amount per unit time, and the material amount in the extrusion channel 14 is oversaturated, which increases the burden of the screw 1 to squeeze out juice, and the material cannot be fully squeezed to extract juice, reducing the juice yield.

[0062] In addition to the above preferred embodiments, the technical solutions protected by the present utility model are not limited to the above embodiments. It should be pointed out that the combination of multiple technical solutions in any one embodiment, and the combination of the technical solution of any one embodiment with the technical solutions in one or more other embodiments, are within the protection scope of the present utility model. Although the present utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to it based on the present utility model. Therefore, these modifications or improvements made without departing from the spirit of the present utility model all belong to the scope of protection claimed by the present utility model.

Claims

1. A juicer squeezing assembly, characterized in that: include: A screw rod comprises a screw rod body and a spiral arranged on the outer surface of the screw rod body; A pressing plate is installed at the upper end of the screw body, the lower surface of which is gradually bent and extended upward from the center to the outside, and has a drop opening for passing the material; The spiral has a main spiral that bends upward along the lower surface of the pressure plate, the upper surface of the main spiral and the lower surface of the pressure plate cooperate to form a shearing zone, the lower surface of the pressure plate is provided with a first cutting edge near the blanking port, and the main spiral is provided with a second cutting edge that cooperates with the first cutting edge for shearing along the material-meeting end along the rotation direction of the screw.

2. The juicer pressing assembly according to claim 1, characterized in that: The shear zone gradually decreases along the rotation direction of the screw.

3. The juice extractor squeezing assembly according to claim 1, characterized in that: The lower surface of the pressure plate is recessed inward to form a groove, and an edge of the groove facing the second cutting edge along the rotation direction of the screw is the first cutting edge; or, the lower surface of the pressure plate protrudes outward to form a protrusion, and an edge of the protrusion on one side close to the blanking port is the first cutting edge.

4. The juicer pressing assembly according to claim 1, characterized in that: The first cutting edge is at least partially arc-shaped, straight-line-shaped, sawtooth-shaped, or broken-line-shaped, and the second cutting edge is at least partially arc-shaped, straight-line-shaped, sawtooth-shaped, or broken-line-shaped.

5. The juice extractor squeezing assembly according to claim 4, characterized in that: The first cutting edge is arc-shaped, the second cutting edge is sawtooth-shaped, the end of the second cutting edge has a puncturing portion, and the puncturing portion cooperates with the first cutting edge for shearing; the puncturing portion and the main spiral are on the same plane, or the top end of the puncturing portion is bent upward and protrudes from the main spiral.

6. The juicer pressing assembly according to claim 1, characterized in that: The distance between the first cutting edge and the second cutting edge is 0.5-2 mm.

7. The juice extractor squeezing assembly according to claim 1, characterized in that: The main spiral includes a cutting portion, and the second cutting edge is provided at the material-meeting end of the cutting portion along the rotation direction of the screw. The projection area of ​​the upper end face of the cutting portion is S1, and the projection area of ​​the blanking port is S2, and S2:S1 is 1-3.

8. The juice extractor squeezing assembly according to claim 7, characterized in that: The main spiral also includes an extrusion portion adjacent to the cutting portion, and one of the cutting portion or the extrusion portion is formed with a notch connected to the blanking port, the notch is spaced apart from the second cutting edge, and the projection area of ​​the notch is S3, and S2:S3 is 4-6.

9. The juicer pressing assembly according to claim 1, characterized in that: The spiral also has a secondary spiral located on the side of the main spiral away from the pressing plate, an extrusion channel is formed between the main spiral and the secondary spiral, the axial height of the extrusion channel is H1, the juicer squeezing assembly also includes a cutting piece fixedly connected to the screw and pre-crushing the material, the distance between the upper end of the cutting piece and the upper end surface of the pressing plate is H2, and H1:H2 is 0.3-1.

10. The juice extractor squeezing assembly according to any one of claims 1 to 9, characterized in that: The curvature of the lower surface of the pressing plate is 0.005-0.15.

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