Juicing assembly

Abstract

The utility model relates to a juicing assembly which comprises an extrusion cylinder, a juicing cavity provided with a screw rod, and a continuous first limiting part formed at the upper end part of the extrusion cylinder along the circumferential direction; the pressing plate is arranged above the extrusion cylinder and rotationally connected with the upper end face of the screw rod, and a continuous second limiting part is formed at the lower end of the pressing plate in the circumferential direction; wherein one of the first limiting part and the second limiting part is provided with a plurality of convex teeth, the other one is provided with a plurality of tooth grooves, and the convex teeth are matched with the corresponding tooth grooves in an inserted mode. According to the technical scheme of the utility model, a plurality of mounting alignment points are arranged on the material in the circumferential direction, so that the mounting of the pressing plate and the extrusion cylinder has higher fault tolerance, the mounting difficulty is further greatly reduced, and the mounting efficiency is also greatly improved; and secondly, the first limiting part and the second limiting part are matched in an inserted mode, the extrusion cylinder is installed on the pressing plate, the circumferential limiting effect on the pressing plate can be achieved, and the situation that the pressing plate shakes or displaces is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of food processing machines, in particular to a juice extracting component which is easy to install. Background Art

[0002] The juicer is developed on the basis of the conventional juicer. Its main function is to turn fruit into juice to improve the taste and facilitate drinking. Compared with the juicer, it obtains juice through low-speed spiral squeezing. The lower the squeezing speed, the better. The juice is squeezed out slowly like a towel, without destroying the fruit cell structure, and the fruit nutrition 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 technology, the motor is combined with the reduction structure to output slow and large torque to meet the large torque required for slow screw squeezing.

[0003] The application number is CN202223023022.9, and the name of the invention is "A food processing machine with a stable juice extraction structure". It discloses that a avoidance opening is provided on the top of the filter assembly, and the ends of the first pressing plate and the second pressing plate are correspondingly accommodated in the two avoidance openings, and the side walls of the avoidance openings are respectively abutted against the side surfaces of the first pressing plate and the second pressing plate to circumferentially limit the fixing portion and the filter assembly. However, the technical problem existing in this technical solution is that the pressing plate is a rib type, and in order to match the pressing plate, only two avoidance openings are provided, and only part of the top surface of the filter assembly is provided with avoidance openings. Due to the large distance between the avoidance openings, the ends of the two pressing plates need to be accurately aligned with the avoidance openings to achieve the installation of the pressing plates in place. Therefore, the tolerance for installing the two pressing plates above the filter assembly is low.

[0004] The application number is CN202320992036.7, and the name of the invention is "A juicer with good use effect". It discloses that a card slot is provided at the top of the juice extraction net, and a pressure plate abuts against the card slot to prevent the pressure plate from shaking or displacement. However, the technical problem existing in this technical solution is that the pressure plate is a rib type. In order to adapt to the pressure plate, there are only three card slots on the top surface of the juice extraction net, and only part of the top surface of the juice extraction net is provided with a avoidance opening. The distance between the card slots is large, and the end of the pressure plate needs to be accurately aligned with the card slot to achieve the installation of the pressure plate in place. Therefore, the tolerance for installing the pressure plate above the juice extraction net is low.

[0005] The above disclosed technical solutions all have the following technical problems: the tolerance of the pressing plate installed above the juice extraction net is low, which increases the difficulty of installing the pressing plate and the juice extraction net. Utility Model Content

[0006] The utility model aims to provide a juice extraction component to solve the technical problems of low tolerance and great installation difficulty when a pressing plate is installed above a juice extraction net.

[0007] In order to solve the above technical problems, the utility model provides a juice extraction component, comprising:

[0008] The extrusion cylinder has a juice extraction chamber for installing a screw, and a continuous first limiting portion is formed on the upper end of the extrusion cylinder along the circumferential direction;

[0009] A pressing plate, arranged above the extrusion barrel and rotatably connected to the upper end surface of the screw, with a lower end portion having a continuous second limiting portion formed along the circumferential direction;

[0010] Wherein, one of the first limiting portion and the second limiting portion is a plurality of protruding teeth, and the other is a plurality of tooth grooves, and each of the protruding teeth is plug-fitted with the corresponding tooth groove.

[0011] Preferably, a first protective portion is formed at the upper end of the extrusion cylinder along the outer periphery of the first limiting portion, and a second protective portion is formed at the lower end of the pressure plate along the outer periphery of the second limiting portion, and one of the first protective portion and the second protective portion is a notch, and the other is a baffle plate arranged in the notch.

[0012] Preferably, the protruding tooth is a juice outlet tooth, and the juice outlet tooth has a first side surface along the rotation direction of the screw and pressed against the tooth groove, and a second side surface forming a lateral juice outlet gap with the tooth groove.

[0013] Preferably, the convex teeth include juice outlet teeth and positioning teeth cooperating with the tooth grooves to position the pressing plate, the positioning teeth are spaced apart from the juice outlet teeth, and the juice outlet teeth form lateral juice outlet gaps with the tooth grooves on both sides.

[0014] Preferably, a top juice outlet gap is provided between the top surface of the juice outlet tooth and the tooth groove, the lateral juice outlet gap is equal everywhere along the axial direction, and the top juice outlet gap is equal everywhere along the circumferential direction.

[0015] Preferably, the pressing plate comprises a main body and a surrounding edge arranged along the outer periphery of the main body, and a material dropping opening is formed between the surrounding edge and the main body.

[0016] Preferably, the second limiting portion is a convex tooth, a transition surface is formed between the bottom surface of the body and the top surface of the convex tooth, and the thickness of the convex tooth gradually increases from the tooth root to the tooth top.

[0017] Preferably, the end surface of one of the first limiting portion and the second limiting portion is recessed inwardly to form the tooth groove, and the end surface of the other one is protruded outwardly to form the convex tooth.

[0018] Preferably, the lateral juice outlet gap is 0.1-0.5 mm.

[0019] Preferably, the central angle corresponding to each of the convex teeth is 7°-20°.

[0020] The beneficial effects of the utility model are:

[0021] 1. The utility model provides a juice extraction assembly, which is through the continuous arrangement of convex teeth and tooth grooves, the pressing plate and the extrusion cylinder can be accurately installed in place by turning a small angle. There are a number of convex teeth and tooth grooves that can be plugged in and matched at 360°, that is, there are multiple alignment points at 360°, which has a high tolerance for the installation of the pressing plate and the extrusion cylinder, thereby greatly reducing the difficulty of installation and greatly improving the installation efficiency. Secondly, the first limiting part and the second limiting part are plugged in and matched, and the extrusion cylinder is installed on the pressing plate, which can have a circumferential limit effect on the pressing plate to prevent the pressing plate from shaking or displacement.

[0022] 2. A first protective portion is formed at the upper end of the extrusion cylinder along the outer periphery of the first limiting portion, and a second protective portion is formed at the lower end of the pressure plate along the outer periphery of the second limiting portion. One of the first protective portion and the second protective portion is a notch, and the other is a baffle plate arranged in the notch. During the installation and closing process of the tooth grooves and the convex teeth, the gap between the two gradually decreases, and it is easy to clamp the operator's hand in the gap, posing an operational safety hazard. The first protective portion and the second protective portion cooperate with each other, that is, the baffle plate is installed in the notch, and the operator first contacts the outer side of the baffle plate, which is not easy to be clamped in the gap during the closing process of the tooth grooves and the convex teeth, and has a better protective effect.

[0023] 3. The first side of the juice discharge tooth will be pressed against the tooth groove to achieve positioning, and the lateral juice discharge gap generated by the second side and the tooth groove is used for juice discharge; or, the positioning teeth in the convex teeth provide circumferential and axial positioning support for the pressing plate, and the two sides of the juice discharge tooth form lateral juice discharge gaps with the tooth groove respectively, which increases the juice discharge area and speeds up the juice discharge rate, while at the same time, the single-side gap can be small, so that fine material residue will not be mixed into the juice, ensuring the taste of the juice. When squeezing materials with more juice, the juice will be discharged from the juice discharge gap between the convex teeth and the tooth groove, and the juice can be discharged from the top of the extrusion barrel to the external juice collecting chamber in time, improving the juice discharge efficiency and reducing the occurrence of juice blockage; at the same time, it also avoids the juice soaking in the material for a long time, ensuring that the material can be effectively ground between the screw and the extrusion barrel.

[0024] 4. The surrounding edge arranged on the outer periphery of the main body has a protective effect on the main body, and can also play a blocking role when the material moves radially outward, so that the material is not easy to move to the outer edge of the pressing plate, thereby avoiding the situation where the material is stuck at the edge of the pressing plate and the feeding barrel, ensuring that the material can fall into the drop port and ensure the juice output rate; secondly, a drop port is formed between the surrounding edge and the main body, that is, the drop port is closed and arranged on the pressing plate, and the drop port is not formed by the pressing plate and other components, thereby omitting the assembly and positioning process, improving the processing and assembly efficiency, and at the same time, there is no error value caused by assembly, and the assembly accuracy is greatly improved. Since there is no assembly gap at the drop port, there is no problem of material getting stuck in the assembly gap at the entire drop port.

[0025] 5. A transition surface is formed between the bottom surface of the main body and the top surface of the convex tooth. The juice remaining at the root of the convex tooth is too small to be quickly discharged from the top juice outlet gap or the side juice outlet gap. This part of the juice is drained by the transition surface and slowly gathers at the tooth top of the convex tooth. When the amount of juice reaches the threshold of the juice outlet gap, it will be discharged from the top juice outlet gap, so that the juice remaining on the convex tooth or tooth groove can be discharged in time, reducing the phenomenon of juice hanging on the wall and improving the juice discharge rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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.

[0027] Figure 1 It is a structural schematic diagram of a juice extraction component in one embodiment of the utility model.

[0028] Figure 2 for Figure 1 An exploded schematic diagram of the juicing assembly is shown.

[0029] Figure 3 for Figure 2 An enlarged schematic diagram of point A is shown.

[0030] Figure 4 for Figure 1 Schematic diagram of the structure of the pressure plate shown.

[0031] Figure 5 for Figure 4 An enlarged schematic diagram of point B is shown.

[0032] Figure 6 FIG. 1 is a schematic diagram of the cooperation between the convex teeth and the tooth grooves in one embodiment.

[0033] Figure 7 It is a schematic diagram of the cooperation between the convex teeth and the tooth grooves in another embodiment.

[0034] Figure 8 It is a structural schematic diagram of a juice extraction component in another embodiment of the utility model.

[0035] The names of the components in the figure are as follows:

[0036] 1. Extrusion cylinder; 11. First limiting part; 12. First protective part; 2. Pressing plate; 21. Second limiting part; 22. Second protective part; 23. Main body; 24. Surrounding edge; 25. Dropping port; 26. Transition surface; 31. Juice outlet teeth; 32. Positioning teeth; 33. Lateral juice outlet gap; 34. Top juice outlet gap. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] See also Figure 1-Figure 8 An embodiment of the utility model provides a juice extraction assembly, including a squeezing cylinder 1 and a pressing plate 2.

[0039] The extrusion cylinder 1 has a juice extraction chamber for mounting a screw, and a first limiting portion 11 is formed circumferentially on the upper end of the extrusion cylinder; the pressing plate 2 is arranged above the extrusion cylinder 1 and is rotatably connected to the upper end surface of the screw, and a second limiting portion 21 is formed circumferentially on the lower end of the pressing plate; wherein one of the first limiting portion 11 and the second limiting portion 21 is a plurality of convex teeth, and the other is a plurality of tooth grooves, and each of the convex teeth is plugged into and matched with the corresponding tooth groove.

[0040] It is understandable that the continuously arranged convex teeth and tooth grooves can accurately install the pressing plate 2 and the extrusion cylinder 1 in place by turning a small angle. There are several convex teeth and tooth grooves that can be plugged in and matched at 360°, that is, there are multiple alignment points at 360°, which has a high tolerance for the installation of the pressing plate 2 and the extrusion cylinder 1, thereby greatly reducing the difficulty of installation and greatly improving the installation efficiency. Secondly, the first limiting portion 11 and the second limiting portion 21 are plugged in and matched to install the extrusion cylinder 1 on the pressing plate 2, which can have a circumferential limiting effect on the pressing plate 2 to prevent the pressing plate 2 from shaking or displacement.

[0041] It should be noted that the first limiter 11 can be arranged on the outside of the upper end of the extrusion cylinder 1, or on the inside of the upper end of the extrusion cylinder 1, or on the upper end surface of the upper end of the extrusion cylinder 1, and the second limiter 21 can be arranged on the pressing plate 2 in the same manner. The convex teeth can be sawtooth-shaped or wavy-shaped.

[0042] Preferably, the central angle corresponding to each of the convex teeth is 7°-20°, that is, a convex tooth is provided every 7°-20° of 360°, and 18-50 convex teeth can be provided on the extrusion cylinder 1 or the pressing plate 2, which not only meets the processing requirements of the convex teeth and tooth grooves, but also the convex teeth are evenly distributed in the circumferential direction, which is convenient for the pressing plate 2 and the extrusion cylinder 1 to be inserted into the juice collecting chamber at any angle and direction in the circumferential direction, which is convenient for installation and use, and has a high installation tolerance. When the central angle corresponding to the convex teeth is less than 7°, the difficulty of processing the convex teeth and tooth grooves is greatly increased; when the central angle corresponding to the convex teeth is greater than 20°, there are fewer alignment points in the 360° circumferential direction, and the installation tolerance of the pressing plate 2 and the extrusion cylinder 1 is low. Correspondingly, the central angle corresponding to the tooth groove is also 7°-20°.

[0043] In one embodiment, if Figure 1-7 As shown, in this embodiment, the first limiting portion 11 is arranged on the inner side of the upper end of the extrusion cylinder 1. Specifically, a first protection portion 12 is formed along the outer periphery of the first limiting portion 11 at the upper end of the extrusion cylinder 1, and a second protection portion 22 is formed along the outer periphery of the second limiting portion 21 at the lower end of the pressing plate 2. One of the first protection portion 12 and the second protection portion 22 is a notch, and the other is a baffle plate arranged in the notch.

[0044] It should be noted that the baffle plate is in a circular ring shape, the side surface of the baffle plate is a vertical plane, and the groove is adapted to the shape of the baffle plate.

[0045] It is understandable that if there is no protective part, the tooth groove and the protruding teeth are in direct contact with the outside, and the gap between the tooth groove and the protruding teeth gradually decreases during the installation and closing process, and it is easy for the operator's hand to be caught in the gap, which poses a hidden danger to operation safety. Therefore, by the cooperation between the first protective part 12 and the second protective part 22, that is, the enclosure plate is installed in the notch, the operator first contacts the outer side of the enclosure plate, and is not easy to be caught in the gap during the closing process of the tooth groove and the protruding teeth, which has a better protective effect.

[0046] There are two forms of juice gaps between the convex teeth and the tooth grooves: Figure 2-Figure 6As shown, in the first mode, the protruding teeth are juice-discharging teeth 31, and the juice-discharging teeth 31 have a first side surface along the rotation direction of the screw and pressed against the tooth groove, and a second side surface that forms a lateral juice-discharging gap 33 with the tooth groove. When the motor is started, the first side surface of the juice-discharging teeth 31 will press against the tooth groove along the rotation direction of the screw to achieve positioning, and the first side surface is inclined in the same direction as the rotation of the screw; the lateral juice-discharging gap 33 formed by the second side surface and the tooth groove is used for juice discharge, and the second side surface is inclined in the opposite direction to the rotation of the screw. The extrusion cylinder 1 cooperates with the externally mounted juice extraction net to form the first and second juice discharges in sequence from bottom to top. When squeezing materials with more juice, since more juice is produced instantaneously, the juice overflows to the upper end of the extrusion barrel 1. At this time, the juice will be discharged from the juice outlet gap between the convex teeth and the tooth grooves. The juice outlet gap realizes the third juice outlet, which can discharge the juice from the extrusion barrel 1 to the external juice collecting chamber in time, thereby improving the juice outlet efficiency and reducing the occurrence of juice blockage; at the same time, it also avoids the juice from soaking the material for a long time, ensuring that the material can be effectively ground between the screw and the extrusion barrel 1.

[0047] Specifically, the juice outlet gap includes a lateral juice outlet gap 33 between the second side surface and the tooth groove, and a top juice outlet gap 34 between the top surface of the juice outlet tooth 31 and the tooth groove. The lateral gap is equal everywhere along the axial direction, and the top gap is equal everywhere along the circumferential direction, so that the pressure at each location of the juice outlet gap will not be too large or too small. In other embodiments, the lateral gap can also be set to gradually increase or decrease from top to bottom, and adjusted according to the speed of juice discharge and the amount of residue in the juice. If the lateral gap is set to gradually decrease from top to bottom, the juice gradually overflows from bottom to top, which can ensure that the food passes through the smaller gap as much as possible, reduce the residue content in the discharged juice, and reduce the residue content.

[0048] As a preferred embodiment, the lateral juice discharge gap 33 is 0.1-0.5mm. The lateral juice discharge gap 33 not only meets the requirements of juice discharge speed, discharges the juice from the extrusion barrel 1 in time, but also does not allow the material to be discharged with the juice, thereby ensuring the taste of the juice; the lateral juice discharge gap 33 is preferably 0.2mm. When the lateral juice discharge gap 33 is less than 0.1mm, the juice discharge rate is too slow, and the effect of the third juice discharge is not significant, resulting in the accumulation of juice in the extrusion barrel 1. When the lateral juice discharge gap 33 is greater than 0.5mm, due to the excessive size of the juice discharge gap, while the juice is discharged, part of the material will also be discharged, and the juice is easily mixed with more material residues, which greatly affects the taste of the juice. In addition, the top juice discharge gap 34 can also be set to 0.1-0.5mm.

[0049] Method 2 is different from method 1 in that Figure 7As shown, the protruding teeth include juice outlet teeth 31 and positioning teeth 32 that cooperate with the tooth grooves to position the pressing plate 2. The positioning teeth 32 are spaced apart from the juice outlet teeth 31, and the two sides of the juice outlet teeth 31 form lateral juice outlet gaps 33 with the tooth grooves respectively.

[0050] It is understandable that a larger matching gap can be set between the juice discharge teeth 31 and the tooth grooves to form a sufficient gap for juice discharge, while a smaller matching gap can be set between the positioning teeth 32 and the tooth grooves to limit the pressing plate 2 in the circumferential direction, thereby preventing the pressing plate 2 from shaking or shifting in the radial direction. The top surface of the positioning teeth 32 and the bottom surface of the tooth grooves can form an axial positioning structure of the pressing plate 2, which forms an axial support for the pressing plate 2 to prevent the pressing plate 2 from moving downward in the axial direction. The role of the positioning teeth 32 is to provide circumferential and axial positioning support. The number of positioning teeth 32 is greater than or equal to three, so that the extrusion cylinder 1 or the pressing plate 2 can be uniformly stressed in the entire circumferential direction to avoid damage due to local overload. The two sides of the juice discharge teeth 31 respectively form lateral juice discharge gaps 33 with the tooth grooves, which increases the area of ​​juice discharge and thus speeds up the juice discharge rate. At the same time, the single-side gap can be smaller, so that fine material residues will not be mixed into the juice, thereby ensuring the taste of the juice.

[0051] In addition, if Figure 4 As shown, the pressing plate 2 includes a body 23 and a rim 24 arranged along the outer periphery of the body 23. A material drop opening 25 is formed between the rim 24 and the body 23, that is, the material drop opening 25 is closed and arranged on the pressing plate 2. The size of the material drop opening 25 can be achieved by simply changing the shape of the pressing plate 2. According to the size of the screw, the size of the material drop opening 25 is adjusted on the pressing plate 2 to balance the material drop speed and the juice extraction speed, thereby reducing the phenomenon of insufficient grinding and juice extraction due to excessively fast material drop and excessively fast juice discharge speed, resulting in juice blockage. At the same time, the material drop opening 25 is not formed by the pressing plate 2 and other components, and the assembly positioning process is omitted, thereby improving the processing and assembly efficiency. At the same time, there is no error value caused by assembly, and the assembly accuracy is greatly improved. Since the material drop opening 25 has no assembly gap, the entire material drop opening 25 does not have the problem of material jamming in the assembly gap.

[0052] Secondly, the surrounding edge 24 is in the shape of a circular ring. The surrounding edge 24 protects the main body 23 and can also block the material when it moves radially outward, making it difficult for the material to move toward the outer edge of the pressing plate 2, thereby avoiding the situation where the material is stuck at the edge of the pressing plate 2 and the feeding barrel, ensuring that the material can fall into the drop port 25 and the juice yield is guaranteed.

[0053] like Figure 4-Figure 5As shown, the first limiting part 11 is a tooth groove, and the second limiting part 21 is a convex tooth. The convex teeth corresponding to the blanking port 25 have almost the same thickness from the root to the top of the tooth, and the convex teeth are in the shape of a sheet, and the tooth groove and the convex teeth are adapted to each other; the convex teeth corresponding to the body 23 gradually increase in thickness from the root to the top of the tooth. Specifically, a transition surface 26 is formed between the bottom surface of the body 23 and the top surface of the convex teeth, and the thickness of the convex teeth gradually increases from the root to the top of the tooth. The convex teeth are in the shape of a pyramid, and the bottom surface of the body 23 is an arc surface. The body 23 and the convex teeth can be smoothly connected through the transition surface 26. When the juice overflows the root of the convex teeth, Part of the juice is discharged through the lateral juice discharge gap 33 and the top juice discharge gap 34 at the beginning, while the juice remaining at the root of the convex tooth is too small to be quickly discharged from the top juice discharge gap 34 or the lateral juice discharge gap 33. This part of the juice is slowly gathered at the tooth top of the convex tooth through the drainage effect of the transition surface 26. When the amount of juice reaches the threshold of the juice discharge gap, it will be discharged from the top juice discharge gap 34, so that the juice remaining on the convex tooth or tooth groove can be discharged in time, reducing the phenomenon of juice hanging on the wall and improving the juice discharge rate.

[0054] In another embodiment, Figure 8 As shown, the first limiting portion 11 is arranged on the upper end surface of the upper end portion of the extrusion cylinder 1, and the second limiting portion 21 is arranged on the lower end surface of the lower end portion of the pressing plate 2. Specifically, the end surface of one of the first limiting portion 11 and the second limiting portion 21 is recessed inward to form the tooth groove, and the end surface of the other is protruding outward to form the convex tooth. It can be understood that a juice outlet gap will be generated between the convex tooth and the tooth groove. After the juice overflows, the juice outlet gap is directly connected to the external juice collecting chamber, etc., shortening the juice outlet path, greatly improving the efficiency of the juice discharge from the extrusion cylinder 1, and further reducing the occurrence of juice blockage.

[0055] 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 juice extraction component, characterized in that: include: The extrusion cylinder has a juice extraction chamber for installing a screw, and a continuous first limiting portion is formed on the upper end of the extrusion cylinder along the circumferential direction; A pressing plate, arranged above the extrusion barrel and rotatably connected to the upper end surface of the screw, with a lower end portion having a continuous second limiting portion formed along the circumferential direction; Wherein, one of the first limiting portion and the second limiting portion is a plurality of protruding teeth, and the other is a plurality of tooth grooves, and each of the protruding teeth is plug-fitted with the corresponding tooth groove.

2. The juice extraction assembly according to claim 1, characterized in that: A first protective portion is formed at the upper end of the extrusion cylinder along the outer periphery of the first limiting portion, and a second protective portion is formed at the lower end of the pressure plate along the outer periphery of the second limiting portion. One of the first protective portion and the second protective portion is a notch, and the other is a baffle plate arranged in the notch.

3. The juice extraction assembly according to claim 1, characterized in that: The protruding teeth are juice outlet teeth, and the juice outlet teeth have a first side surface along the rotation direction of the screw and pressed against the tooth groove, and a second side surface forming a lateral juice outlet gap with the tooth groove.

4. The juice extraction assembly according to claim 1, characterized in that: The convex teeth include juice outlet teeth and positioning teeth that cooperate with the tooth grooves to position the pressing plate. The positioning teeth are spaced apart from the juice outlet teeth, and two sides of the juice outlet teeth form lateral juice outlet gaps with the tooth grooves respectively.

5. The juice extraction assembly according to claim 3 or 4, characterized in that: A top juice outlet gap is provided between the top surface of the juice outlet tooth and the tooth groove, the lateral juice outlet gap is equal everywhere along the axial direction, and the top juice outlet gap is equal everywhere along the circumferential direction.

6. The juice extraction assembly according to claim 1, characterized in that: The pressing plate comprises a main body and a surrounding edge arranged along the outer periphery of the main body, and a material drop opening is formed between the surrounding edge and the main body.

7. The juice extraction assembly according to claim 6, characterized in that: The second limiting portion is a convex tooth, a transition surface is formed between the bottom surface of the body and the top surface of the convex tooth, and the thickness of the convex tooth gradually increases from the tooth root to the tooth top.

8. The juice extraction assembly according to claim 1, characterized in that: The end surface of one of the first limiting portion and the second limiting portion is recessed inward to form the tooth groove, and the end surface of the other one is protruded outward to form the convex tooth.

9. The juice extraction assembly according to claim 3 or 4, characterized in that: The lateral juice outlet gap is 0.1-0.5 mm.

10. The juice extraction assembly according to claim 1, characterized in that: The central angle corresponding to each of the convex teeth is 7°-20°.

Images