Juicer pressing component

Abstract

The utility model relates to a juicer squeezing assembly, the juicer comprises a screw, comprising a screw body and a spiral arranged on the outer surface of the screw body; a first cutting edge, which is transmission-connected to the upper end of the screw; a pressing plate, which is installed between the screw body and the first cutting edge, and the pressing plate is provided with a material guide disc and a material drop opening along the rotation direction of the screw, and the material guide disc has a circumferentially continuous surface; the upper surface of the material guide disc extends outward from the center of the screw at least partially upwardly and is a conical surface; the first cutting edge is arranged along the upper surface of the material guide disc, and a shearing zone is formed between the material guide disc and the first cutting edge, and the shearing zone includes a conical shearing zone arranged between the conical surface of the material guide disc and the bottom surface of the first cutting edge. The technical solution of the utility model has the advantages of utilizing a balanced material drop speed and a screw biting speed, so that the screw can bite the material better, and the material is fully squeezed in the grinding section of the screw, which greatly improves the juice yield; and it can reduce the risk of material jamming in the shearing zone, thereby reducing the load of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of food processing machines, in particular to a juicer pressing component with low load and high juice yield. 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 CN201510734264.4, invention name "A safe large-diameter screw extrusion juicer", discloses that a spiral material guide surface is provided at the bottom of the storage chamber, the material guide surface spirals downward along the rotation direction of the screw, and the opening is located at the lowest point of the material guide surface; the material shifting piece is driven to rotate by the extrusion screw, and the material shifting piece shifts the material along the spiral direction of the material guide surface, so that the material is shifted into the opening along the spiral surface by the material shifting piece, and the material moves along the spiral surface with the help of gravity, and only a very light force is needed to shift the material to move. The technical problem existing in this technical scheme is: since the function of the material-pickup piece and the material-guiding surface is to accelerate the introduction of the material into the material-dropping port, and no matter whether the material-guiding surface is an arc, an inclined surface or a spiral surface, the material will tend to move from the periphery of the material-guiding surface to the center. Therefore, in order to prevent the outer edge of the material-pickup piece and the material-guiding surface from interfering with each other, the material-pickup piece is only arranged in the central area of ​​the material-guiding surface (as shown in its attached figure) to realize material-pickup. However, since the material between the bottom surface of the material-pickup piece and the material-guiding surface will be squeezed and pushed radially outward, and the material in the peripheral area of ​​the material-guiding surface will move toward the center under the action of the gravity component force, the gap between the material-guiding surface and the bottom surface of the material-pickup piece at the connection between the peripheral area and the central area of ​​the material-guiding surface is easily blocked by the material, which makes it difficult for the material-pickup piece to rotate after being blocked, increasing the load of the motor; secondly, since the material-pickup piece is in the form of a sheet, thin in thickness, and high in height, it is difficult to flip the material from the material-guiding surface to the top of the material-pickup piece, further aggravating the risk of material jamming.

[0004] Application number CN202223023022.9, invention name "A food processor with a stable juice extraction structure", discloses that the ends of the first pressing plate and the second pressing plate extend to two annular tracks of different heights, respectively, and the two annular tracks are located on two different upper and lower rotating planes. The technical problem existing in this technical solution is: since there are drop holes between the two pressing plates, and there are many drop holes, the area of ​​all drop holes is much larger than the setting area of ​​the pressing plates, so that larger pieces of material enter the screw grinding section early. At the same time, since the screw biting speed cannot keep up with the drop speed, a lot of material accumulates in the screw, so that part of the material is discharged as residue before it is fully squeezed, resulting in a decrease in juice yield.

[0005] Application number CN201990001351.0, invention name "A juicer", discloses that a horizontal cutting blade extends horizontally along the lower surface of the hopper, and the horizontal cutting blade pushes the material located on the bottom plate of the hopper, so that a part of it falls into the screw through the discharge hole, and the other part is sheared into small materials by the cooperation of the horizontal cutting blade and the discharge hole. The technical problem existing in this technical scheme is: since the horizontal cutting blade and the lower surface of the hopper are both extended horizontally, the material is continuously pushed radially outward, which is not conducive to sufficient cutting on the one hand. When it falls into the drop port, it is still a large piece of material, and the screw has no time to bite the material; on the other hand, the material is continuously pushed radially outward, and it will also be stuck at the bottom edge of the feed barrel, reducing the material falling into the grinding section of the screw, and reducing the juice yield.

[0006] Application number CN201721176317.6, invention name "A juicer with slicing function", discloses that the cutting blade on the fixed disk slices the food into slices and then enters the screw through the feeding knife hole, and another part of the small food falls directly into the feeding circular hole. The technical problem existing in this technical scheme is that the upper surface of the fixed disk and the cutting blade are both arranged horizontally, and during the rotation of the screw, the material can only be passively pushed radially outward continuously. The material is continuously pushed radially outward and will be stuck at the bottom edge of the feed barrel, reducing the material falling into the grinding section of the screw and reducing the juice yield; at the same time, the thickness of the cutting blade is relatively thin, and it may not be possible to turn over the material on the fixed disk, and there is a phenomenon that the material keeps idling with the fixed disk.

[0007] The above disclosed technical solutions all have the following technical problems: material will get stuck between the pressing plate and the material-shifting piece, or between the pressing plate and the cutting part, increasing the motor load; in addition, the material is continuously pushed radially outward or idles with the pressing plate, resulting in insufficient cutting and affecting the juice yield. Utility Model Content

[0008] The utility model aims to provide a juicer squeezing component, which can solve the technical problems of material jamming, heavy motor load, and insufficient material cutting, which affects the juice yield.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A juicer squeezing assembly, comprising:

[0011] The screw comprises a screw body and a spiral arranged on the outer surface of the screw body; a first cutting edge is drivingly connected to the upper end of the screw; a pressing plate is installed between the screw body and the first cutting edge, and the pressing plate is provided with a material guide plate and a material drop port along the rotation direction of the screw, and the material guide plate has a surface continuous along the circumferential direction;

[0012] The upper surface of the material guide plate extends outward from the center of the screw at least partially upward in a tapered shape; the first cutting edge is arranged along the upper surface of the material guide plate, and a shearing zone is formed between the material guide plate and the first cutting edge, and the shearing zone includes a tapered shearing zone arranged between the tapered surface of the material guide plate and the bottom surface of the first cutting edge.

[0013] Preferably, the first cutting edge passes through the blanking port along the rotation direction of the screw, and the gap of the conical shearing zone is arranged from large to small.

[0014] Preferably, the upper surface of the guide plate is provided with a first guide surface and a second guide surface in sequence along the rotation direction of the first cutting edge, the conical shear zone includes a first conical shear zone arranged between the first guide surface and the bottom surface of the first cutting edge, and a second conical shear zone arranged between the second guide surface and the bottom surface of the first cutting edge, and the height of the first conical shear zone is smaller than the height of the second conical shear zone.

[0015] Preferably, the height values ​​of the first conical shear zone along the circumferential direction are equal everywhere, and the height values ​​of the second conical shear zone along the circumferential direction gradually increase; the height values ​​of the first conical shear zone and the second conical shear zone along the radial outward direction are equal everywhere.

[0016] Preferably, the shearing zone further comprises a buffer shearing zone provided between the upper surface of the material guide plate and the bottom surface of the first cutting edge, and the buffer shearing zone is connected to the conical shearing zone.

[0017] Preferably, one of the buffer shearing zone and the conical shearing zone is arranged at a side of the shearing zone close to the center of the screw, and the other is arranged at a position of the shearing zone away from the center of the screw.

[0018] Preferably, one of the top surface and the bottom surface of the buffer shearing zone is a horizontal surface, and the other is inclined outwardly and upwardly along the center of the screw to form a conical surface.

[0019] Preferably, the spiral has a main spiral that tilts upward from the center outward, a first cutting edge is provided on the lower surface of the guide plate near the blanking port, and a second cutting edge is provided at the material-meeting end of the main spiral along the direction of rotation of the screw, and the first cutting edge cooperates with the second cutting edge to form shearing.

[0020] Preferably, the lower surface of the material guide 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 material guide 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.

[0021] Preferably, the distance between the top surface and the bottom surface of the tapered shearing zone is 0.5-2 mm.

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

[0023] 1. The utility model provides a juicer pressing assembly, which is provided with a conical shearing zone between the conical surface of the guide plate and the bottom surface of the first cutting edge. In the conical shearing zone, the component force of gravity provides the driving force for the material to move toward the center, effectively preventing the material from being continuously pushed radially outward. On the one hand, it makes it difficult for the material to be stuck at the bottom edge of the feed barrel, ensuring that more material falls into the grinding section of the screw to be squeezed, thereby improving the juice yield; on the other hand, it ensures that the material is always in the effective cutting section along the radial direction, which is conducive to the material being fully pre-cut, so that the smaller pieces of material falling into the screw can be used to balance the falling speed and the screw biting speed, so that the screw can bite the material better, and the material is fully squeezed in the grinding section of the screw, greatly improving the juice yield. Secondly, the first cutting edge is arranged along the upper surface of the guide plate, that is, the radius of the first cutting edge can be equal or approximately equal to that of the guide plate, so that the gap between the top and bottom surfaces of the entire shearing zone is small, and there will be no very obvious gap change in the shearing zone, reducing the risk of material stuck in the shearing zone, thereby reducing the load of the motor. Furthermore, the guide plate has a surface that is continuous along the circumference, and the area of ​​the guide plate is much larger than the area of ​​the drop port. The probability of material entering the drop port is reduced, and large pieces of material are not easy to enter the drop port, and only smaller pieces of material are allowed to fall in as much as possible. Therefore, the speed at which the material enters the drop port will not be too fast, which balances the falling speed of the material and the biting speed of the screw, effectively avoiding the accumulation of a lot of material in the screw, so that the material is fully squeezed in the grinding section of the screw, greatly improving the juice yield.

[0024] 2. The first cutting edge passes through the blanking port along the direction of screw rotation. The gap in the conical shearing zone is set from large to small. The larger gap side allows small materials to have enough space to pass through the gap, so that some small materials can smoothly fall into the screw when passing through the blanking port, preventing some small materials from being stuck in the arc gap and reducing the motor load; for the other part of the large block material, when it goes from the large gap to the small gap, due to the effect of gravity, the large block material will fall a short height. When it reaches the smaller gap side, the large block material falls to a height that can be effectively cut, which greatly increases the probability of the material being cut, reduces the ineffective time of the material idling, and increases the juice extraction rate. In addition, when a part of the material is accumulated at the drop-out port, the first cutting edge will flip the large piece of material at the moment when the gap changes from large to small, so that the large piece of material can be pushed by the first cutting edge to go one circle along the guide plate, and when it passes through the drop-out port, it is cut again in the above-mentioned way and falls into the screw; and because the drop-out port reduces the accumulation of materials, the screw biting speed is more balanced, which effectively avoids that part of the material is discharged as residue before being fully squeezed by the screw, thereby improving the juice yield.

[0025] 3. Since the height of the first conical shearing zone is smaller than that of the second conical shearing zone, the axial height of the lowest point of the first guide surface is greater than the axial height of the highest point of the second guide surface, so that when the material moves from the first guide surface to the second guide surface and finally to the drop port, it has a better guiding effect on the material, allowing the material to fall quickly into the screw, shortening the falling stroke of the material, effectively preventing the oxidation of the material, and ensuring the taste of the juice. Since the height value of the first conical shearing zone is equal everywhere along the circumferential direction, and the component force of gravity is equal in the same radial direction, the material can be pushed steadily by the first cutting edge, and will not start to accelerate too early, so that the screw biting speed cannot keep up with the falling speed; the height value of the second conical shearing zone along the circumferential direction gradually increases, and the component force of gravity gradually increases in the same radial direction, so that a part of the small pieces of material are accelerated to enter the falling port, which plays a better material guiding role; another part of the large pieces of material can also be accelerated in the radial direction from the second arc gap to the first arc gap, which not only meets the falling height of the large pieces of material, but also shortens the time when the large pieces of material are cut by the second shearing edge, greatly improving the pre-cutting efficiency. In addition, the material distribution in the radial direction of the first conical shearing zone is more uniform, and the material distribution in the radial direction of the second conical shearing zone is also more uniform, which can more effectively avoid the rapid and concentrated movement of the material toward the center, give the material more opportunities for sufficient buffering, greatly reduce the probability of material accumulation in the center of the guide plate, and more effectively avoid the radial disturbance of the center knife and the screw; at the same time, it can more effectively ensure that there will be no very obvious gap changes in the shearing zone, reduce the risk of material jamming in the shearing zone, and thereby reduce the load on the motor.

[0026] 4. The shearing zone includes a conical shearing zone and a buffer shearing zone that are interconnected. The volume of the buffer shearing zone may be larger than that of the conical shearing zone, which temporarily stores the material and acts as a buffer in the process of the material moving toward the center; or, when the upper surface of the guide plate in the buffer shearing zone extends horizontally, the material has no tendency to move toward the center in the buffer shearing zone; due to the setting of the buffer shearing zone, the average speed of the entire shearing zone moving toward the center is reduced, effectively reducing the probability of material accumulation in the center, thereby avoiding radial disturbance of the center knife and the screw. In addition, it also effectively solves the problem of a large amount of material accumulating radially outward and the material being stuck at the bottom edge of the feed barrel, ensuring that more material can fall into the grinding section of the screw and improve the juice yield.

[0027] 5. The lower surface of the guide plate extends upward from the center to the outside, and the upper surface of the main spiral extends upward from the center to the outside. The component force of the material's gravity provides a driving force for moving toward the center, so that the material can produce relative movement on the main spiral, making it difficult for the material to adhere tightly to the upper surface of the main spiral, effectively ensuring that the material falling on 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, the existence of the driving force makes it difficult for the material located at the outer edge of the shearing zone to fall directly into the grinding section, thereby making the material located at the edge of the shearing zone more likely to be sheared between the first cutting edge and the second cutting edge; at the same time, it also increases the path of the material running, delays the time for the material to enter the screw grinding section, matches the grinding and juicing speed with the material falling speed, and makes the material entering the screw grinding section more delicate, reducing the burden of the screw squeezing juice, and greatly improving the juice extraction rate. 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 An enlarged schematic diagram of point A is shown.

[0031] Figure 3 for Figure 1 A schematic structural diagram of the juicer pressing assembly from another perspective is shown.

[0032] Figure 4 for Figure 3 An enlarged schematic diagram of point B is shown.

[0033] Figure 5 for Figure 1 A schematic top view of a juicer squeezing assembly is shown.

[0034] Figure 6 It is a schematic structural diagram of a pressing plate, a first cutting edge and a screw rod in another embodiment of the present invention.

[0035] Figure 7 for Figure 6 An enlarged schematic diagram of point C is shown.

[0036] Figure 8 for Figure 6 Schematic diagram of the structure of the pressure plate, the first cutting edge and the screw alternative.

[0037] Fig. 9 for Figure 8 An enlarged schematic diagram of point D is shown.

[0038] Fig.10 for Figure 1 Schematic diagram of the structure of the screw shown.

[0039] Fig.11 for Figure 1 Schematic diagram of the structure of the pressure plate shown.

[0040] The names of the components in the figure are as follows:

[0041] 1. Screw; 11. Screw body; 12. Main spiral; 121. Second cutting edge; 2. Press plate; 21. Blanking port; 211. Second shearing cutting edge; 22. First cutting edge; 23. Groove; 24. Guide plate; 241. First guide surface; 242. Second guide surface; 251. First conical shearing zone; 252. Second conical shearing zone; 26. Buffer shearing zone; 3. First cutting edge; 4. Second cutting edge. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] See also Figure 1-Figure 5 The embodiment of the utility model provides a juicer squeezing assembly, comprising a screw 1, a pressing plate 2, a first cutting edge 3 and a second cutting edge 4. The first cutting edge 3 is installed 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.

[0044] The screw 1 comprises a screw body 11 and a spiral arranged on the outer surface of the screw body 11; a first cutting edge 3 is transmission-connected to the upper end of the screw 1; a pressure plate 2 is installed between the screw body 11 and the first cutting edge 3, and the pressure plate 2 is provided with a guide plate 24 and a drop port 21 along the rotation direction of the screw 1, and the guide plate 24 has a surface that is continuous along the circumferential direction; the upper surface of the guide plate 24 extends outward from the center of the screw 1 at least partially upward to form a conical surface; the first cutting edge 3 is arranged along the upper surface of the guide plate 24, and a shearing zone is formed between the guide plate 24 and the first cutting edge 3, and the shearing zone includes a conical shearing zone arranged between the conical surface of the guide plate 24 and the bottom surface of the first cutting edge 3.

[0045] It should be noted that the shearing zone can be set as a conical shearing zone in its entirety, or as a conical shearing zone in its entirety, and as any other shape in its entirety, as long as the gap between the top and bottom surfaces of the shearing zone is small and the shearing zone does not have a very obvious gap change. The angle between the conical shearing zone and the horizontal can be greater than or equal to 25°.

[0046] It can be understood that since the first cutting edge 3 is arranged along the upper surface of the guide plate 24, that is, the radius of the first cutting edge 3 can be equal to or approximately equal to that of the guide plate 24, the gap between the top and bottom surfaces of the entire shearing zone is smaller, and there will be no very obvious gap change in the shearing zone, which reduces the risk of material jamming in the shearing zone and thereby reduces the load on the motor. At the same time, the upper surface of the guide plate 24 extends from the center of the screw 1 outward at least partially upward to form a conical surface. In the entire shearing zone, the material tends to move toward the center.

[0047] Secondly, since a conical shearing zone is provided between the conical surface of the guide plate 24 and the bottom surface of the first cutting edge 3, in the conical shearing zone, the component force of gravity provides a driving force for the material to move toward the center, effectively preventing the material from being continuously pushed radially outward. On the one hand, it makes it difficult for the material to be stuck at the bottom edge of the feed barrel, ensuring that more material falls into the grinding section of the screw 1 to be squeezed, thereby improving the juice yield; on the other hand, it ensures that the material is always in the effective cutting section along the radial direction, which is conducive to sufficient pre-cutting of the material, so that the smaller pieces of material that fall into the screw 1 can utilize the balanced falling speed and the biting speed of the screw 1, so that the screw 1 can bite the material better, and the material is fully squeezed in the grinding section of the screw 1, thereby greatly improving the juice yield.

[0048] Furthermore, the material guide plate 24 has a surface that is continuous along the circumferential direction, and as can be seen from the diagram, the area of ​​the material guide plate 24 is much larger than the area of ​​the material outlet 21, the probability of material entering the material outlet 21 is reduced, and large pieces of material are not easy to enter the material outlet 21, and only smaller pieces of material are allowed to fall in as much as possible. Therefore, the speed at which the material enters the material outlet 21 will not be too fast, which balances the falling speed of the material and the biting speed of the screw 1, 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.

[0049] In one embodiment, in this embodiment, the entire upper surface of the material guide plate 24 is a conical surface, and the entire shearing area is set as a conical shearing area.

[0050] Specifically, the distance between the top and bottom surfaces of the conical shearing zone is 0.5-2 mm. If the distance between the top and bottom surfaces of the conical shearing zone is too large, the first cutting edge 3 and the blanking port 21 will not be able to effectively cut the material; if the distance between the top and bottom surfaces of the conical shearing zone is too small, the actual processing accuracy is difficult to achieve. The distance between the top and bottom surfaces of the conical shearing zone is preferably 1 mm.

[0051] The specific structure of the first cutting edge 3: The first cutting edge 3 can effectively flip the material, flip the material from the guide plate 24 to the top of the first cutting edge 3, and further reduce the risk of material jamming in the conical shearing area. The upper surface of the first cutting edge 3 has two edges. The first cutting edge 3 has a material-facing surface along the rotation direction of the screw 1. The angle between the material-facing surface and the horizontal plane is a right angle or a nearly right angle. The material-facing surface can be used to push the material. The bottom edge of the material-facing surface is the first shearing edge. The blanking port 21 is formed with a second shearing edge 211 that cooperates with the first shearing edge on one side along the rotation direction of the screw 1. When the material enters the feed barrel, it is first pierced and cut into larger pieces of material by the second cutting edge 4. This is the first pre-cutting. The first shearing edge and the second shearing edge 211 cooperate to shear and cut the large pieces of material into small pieces. This is the second pre-cutting of the material.

[0052] like Figure 1-Figure 4 As shown, in order to increase the juice extraction rate of the material, the first cutting edge 3 passes through the drop opening 21 along the rotation direction of the screw 1, and the gap of the conical shearing zone is set from large to small.

[0053] It can be understood that, from the second conical shearing zone 252 to the first conical shearing zone 251, the second conical shearing zone 252 has a larger gap, which allows small materials to have enough space to pass through the gap, so that a part of the small materials can smoothly fall into the screw 1 when passing through the drop port 21, preventing some small materials from being stuck in the second conical shearing zone 252, thereby reducing the motor load; for the other part of the large block material, when going from the large gap to the small gap, due to the effect of gravity, the large block material will fall a short distance in height, and the second shearing edge 211 may be exactly at half the height of the large block material. The second shearing edge 211 will abut the material, and it can be effectively cut by the first shearing edge and the second shearing edge 211, which greatly increases the probability of the material being cut, reduces the ineffective time of the material idling, and increases the juice extraction rate.

[0054] In addition, when a portion of material is accumulated at the drop port 21, the first cutting edge 3 will flip the large piece of material at the moment when the gap changes from a large gap to a small gap, so that the large piece of material can be pushed by the first cutting edge 3 to go around the guide plate 24 again, and when passing through the drop port 21, it is cut again in the above-mentioned manner and falls into the screw 1; and the material accumulated at the drop port 21 is rotated along the guide plate 24 again, the falling speed of the material is slowed down, the pre-cutting is more sufficient, and the biting speed of the screw 1 is more balanced, which effectively avoids that part of the material is discharged as residue before being fully squeezed by the screw 1, thereby improving the juice yield.

[0055] Specifically, Figure 1-Figure 5 As shown, the upper surface of the guide plate 24 is provided with a first guide surface 241 and a second guide surface 242 in sequence along the rotation direction of the first cutting edge 3, the conical shear zone includes a first conical shear zone 251 provided between the first guide surface 241 and the bottom surface of the first cutting edge 3, and a second conical shear zone 252 provided between the second guide surface 242 and the bottom surface of the first cutting edge 3, and the height of the first conical shear zone 251 is less than the height of the second conical shear zone 252.

[0056] It can be understood that the shapes of the first guide surface 241 and the first cutting edge 3 are adapted, and the bottom surface of the first cutting edge 3 is also a tapered surface extending upward and tilted from the center of the screw 1. When the installation height of the first cutting edge 3 remains unchanged, the axial height of the lowest point of the first guide surface 241 is greater than the axial height of the highest point of the second guide surface 242, so that the height of the first tapered shearing area 251 is less than the height of the second tapered shearing area 252. The connection between the first guide surface 241 and the second guide surface 242 is a smooth arc transition.

[0057] The second shearing edge 211 is located on the side of the first material guide surface 241 away from the second material guide surface 242. The material drop opening 21 is further provided with a material drop surface along the rotation direction of the screw body 11. The material drop surface is located on the side of the second material guide surface 242 away from the first material guide surface 241. When the material goes from the first material guide surface 241 to the second material guide surface 242 and finally to the material drop opening 21, it has a good material guide effect on the material, allowing the material to quickly fall into the screw 1, shortening the material falling stroke, effectively preventing the oxidation of the material, and ensuring the taste of the juice.

[0058] Furthermore, if Figure 2-Figure 4 As shown, the change of the height value of the conical shearing zone along the circumferential direction is described. The height value of the first conical shearing zone 251 along the circumferential direction is equal everywhere. When the second conical shearing zone 252 moves close to the blanking port 21, the height value of the second conical shearing zone 252 along the circumferential direction gradually increases. In other embodiments, the height value of the first conical shearing zone 251 along the circumferential direction may gradually increase or decrease, and the height value of the second conical shearing zone 252 along the circumferential direction may also be equal everywhere.

[0059] It can be understood that, since the height value of the first conical shearing zone 251 along the circumferential direction is equal everywhere, and in the same radial direction, the component force of gravity is equal, the material can be pushed steadily by the first cutting edge 3, and will not start to accelerate too early, so that the screw 1 bites the material and the material speed cannot keep up with the material drop speed. Since the height value of the second conical shearing zone 252 along the circumferential direction gradually increases, at the same radial height, the component force of gravity gradually increases along the circumferential direction, that is, the closer to the drop port 21, the greater the component force of gravity. Therefore, when the material passes from the first guide surface 241 through the second guide surface 242 and finally reaches the drop port 21, the component force of gravity gradually increases, and a part of the small pieces of material accelerate to enter the drop port 21, which plays a better material guiding role. In addition, the second conical shearing zone 252 along the circumferential direction gradually increases in height value, which allows small materials to have enough space to pass through the gap and fall smoothly into the screw 1, and can prevent some small materials from being stuck in the second conical shearing zone 252, thereby reducing the motor load. Another part of the large pieces of material is also accelerated to fall from the second conical shearing zone 252, and can also be accelerated in the radial direction from the second conical shearing zone 252 to the first conical shearing zone 251. The falling height of the large pieces of material not only meets the shearing requirements, but also shortens the time when the large pieces of material are cut at the second shearing edge 211, thereby greatly improving the pre-cutting efficiency.

[0060] The change of the height value of the tapered shearing zone along the radial outward direction is described. The height values ​​of the first tapered shearing zone 251 and the second tapered shearing zone 252 along the radial outward direction are all equal. In other embodiments, the height value of the first tapered shearing zone 251 along the radial outward direction may gradually increase or decrease, and the second tapered shearing zone 252 may be set in the same way. The height values ​​of the first tapered shearing zone 251 and the second tapered shearing zone 252 are not limited to the above-mentioned setting form, and can be adjusted according to actual needs.

[0061] It can be understood that the material distribution in the radial direction of the first conical shearing zone 251 is more uniform, and the material distribution in the radial direction of the second conical shearing zone 252 is also more uniform, which more effectively avoids the material from moving quickly and concentratedly toward the center, provides the material with more opportunities for sufficient buffering, greatly reduces the probability of material accumulation in the center of the guide plate 24, and more effectively avoids the radial disturbance of the center knife and the screw 1. At the same time, it is more effective to ensure that there will be no very obvious gap changes in the shearing zone, reduces the risk of material jamming in the shearing zone, and thus reduces the load of the motor.

[0062] like Figure 6-Figure 9 As shown, in another embodiment, the difference from the previous embodiment is that in this embodiment, only part of the shearing zone is set as a conical shearing zone, and the other part is other non-conical shearing zone forms.

[0063] Specifically, the shearing zone includes a conical shearing zone and a buffer shearing zone 26. The buffer shearing zone 26 is arranged between the upper surface of the guide plate 24 and the bottom surface of the first cutting edge 3. The buffer shearing zone 26 is connected to the conical shearing zone.

[0064] It should be noted that the gap between the top and bottom surfaces of the buffer shearing zone 26 is relatively small, and the buffer shearing zone 26 will not have a very obvious gap change. In the buffer shearing zone 26, the upper surface of the guide plate 24 can extend horizontally or extend upwardly from the center outward or in a curve, and the bottom surface of the first cutting edge 3 can also extend horizontally or extend upwardly from the center outward or in a curve, and the upper surface of the guide plate 24 and the bottom surface of the first cutting edge 3 can have multiple combinations. Therefore, the cross-section of the buffer shearing zone 26 along the axial direction can be a triangle or other shape, and the height values ​​of the buffer shearing zone 26 along the radial outward direction can be equal or unequal; for example, in the buffer shearing zone 26, if the upper surface of the guide plate 24 extends horizontally and the bottom surface of the first cutting edge 3 also extends horizontally, the height values ​​of the buffer shearing zone 26 along the radial outward direction are equal everywhere. In the buffer shearing zone 26, if the upper surface of the guide plate 24 extends horizontally and the bottom surface of the first cutting edge 3 is curved, the height values ​​of the buffer shearing zone 26 along the radial outward direction are unequal.

[0065] It is understandable that the volume of the buffer shearing zone 26 may be larger than the volume of the conical shearing zone. There is more space in the buffer shearing zone 26 to accommodate materials, temporarily store materials, and play a buffering role in the process of materials moving toward the center. Alternatively, when the upper surface of the guide plate 24 in the buffer shearing zone 26 extends horizontally, the materials have no tendency to move toward the center in the buffer shearing zone 26. Therefore, due to the setting of the buffer shearing zone 26, the average speed of the entire shearing zone moving toward the center is reduced, effectively reducing the probability of material accumulation in the center, thereby avoiding radial disturbances of the center cutter and the screw 1. When the upper surface of the guide plate 24 in the buffer shearing zone 26 is a curve, in the curve section, the component force of gravity provides the driving force for the material to move toward the center. Based on the characteristics of the curve, the driving force is large or small in the curve section. For example, in a certain part of the curve section, the driving force is relatively large, so that the material moves faster and the material quickly approaches the center; but in the next part of the curve section, the driving force is relatively small, so that the material moves slowly toward the center. At this time, after passing through the drop opening 21, the material falls into the drop opening 21 before it moves to the center of the guide plate 24, and vice versa. Therefore, the material will not move quickly and concentratedly toward the center, giving the material enough buffering opportunities. A part of the material falls into the drop opening 21 before reaching the center of the guide plate 24, effectively reducing the probability of material accumulation in the center of the guide plate 24, avoiding the situation where the material is stuck between the guide plate 24 and the first cutting edge 3, so that the guide plate 24 and the first cutting edge 3 can be stably connected, thereby effectively avoiding radial disturbance of the screw 1.

[0066] Therefore, both a buffer shearing zone 26 and a conical shearing zone are provided in the shearing zone, so that the average speed of the entire shearing zone moving toward the center is reduced, which not only reduces the probability of material accumulation in the center of the guide plate 24 and avoids the knife jamming, but also effectively solves the problem of large amounts of material accumulation radially outward and material jamming at the bottom edge of the feed barrel, ensuring that more material can fall into the grinding section of the screw 1 and improve the juice yield.

[0067] Further, one of the buffer shearing zone 26 and the conical shearing zone is arranged at a side of the shearing zone close to the center of the screw 1 , and the other is arranged at a position of the shearing zone away from the center of the screw 1 .

[0068] It is understandable that if Figure 8-Figure 9As shown, when the buffer shearing zone 26 is arranged on a side close to the center of the screw 1 and the conical shearing zone is arranged away from the center of the screw 1, the material enters the conical shearing zone, and under the action of the gravity component, the material moves toward the center of the screw 1, and then moves radially inward into the buffer shearing zone 26. The material has no tendency to move toward the center in the buffer shearing zone 26, or the speed of movement toward the center slows down. The material can be temporarily stored in the buffer shearing zone 26. The material in the buffer shearing zone 26 may continue to be pushed and cut again after another circle, thereby slowing down the cutting speed and preventing the space at one end of the screw 1 near the blanking port 21 from being quickly filled with material. The blanking speed and the squeezing juice output speed of the screw 1 are better balanced, and the problem of low juice output rate can be effectively solved.

[0069] like Figure 6-Figure 7 As shown, when the buffer shear zone 26 is arranged on a side away from the center of the screw 1 and the conical shear zone is arranged close to the center of the screw 1, the material in the buffer shear zone 26 will not move toward the center or will move toward the center at a slower speed, allowing the material to stay in the buffer shear zone 26 for a longer time. A portion of the material falls into the drop port 21 before reaching the conical shear zone, thereby reducing the load of the material in the conical shear zone and effectively reducing the probability of material accumulation in the center, thereby avoiding radial disturbance of the center cutter and the screw 1.

[0070] As a preferred embodiment, Figure 6-Figure 9 As shown, one of the top and bottom surfaces of the buffer shearing zone 26 is a horizontal plane, and the other is inclined upward and outward along the center of the screw 1 to form a conical surface. It can be understood that the cross-section of the buffer shearing zone 26 along the axial direction is a triangle, and the volume of the buffer shearing zone 26 is larger than that of the conical shearing zone. The material can be temporarily stored in the buffer shearing zone 26. The material in the triangular area may continue to be pushed and cut again after another turn, slowing down the cutting speed to prevent the space near the end of the screw 1 near the drop port 21 from being quickly filled with materials. Large materials may flip at the drop port 21, flipping the small materials below onto the guide plate 24. These small materials are difficult to be pushed into the drop port 21, resulting in a reduced juice yield. After the present scheme is set in this way, the drop speed and the extrusion juice output speed of the screw 1 are better balanced, which can effectively solve the problem of low juice yield.

[0071] like Figure 5 , Fig.10 , Fig.11As shown, in another embodiment, the difference from the above embodiment is that, in order to achieve the third pre-cutting of the material, the spiral has a main spiral 12 which is inclined upward from the center to the outside, and the lower surface of the guide plate 24 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 at the material-meeting end along the rotation direction of the screw 1, and the first cutting edge 22 cooperates with the second cutting edge 121 to form shearing.

[0072] It can be understood that the lower surface of the guide plate 24 extends upwardly from the center outward, and the upper surface of the main spiral 12 extends upwardly from the center outward, and the shape of the lower surface of the guide plate 24 is adapted to the shape of the upper surface of the main spiral 12. 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, and effectively ensures 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.

[0073] Secondly, the third pre-cutting shearing zone is formed between the upper surface of the main spiral 12 and the lower surface of the guide plate 24. The shearing zone is also inclined upward from the center to the outside. When the material enters the shearing zone, the component 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, it also increases the path of the material movement, 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 makes the material entering the grinding section of the screw 1 more delicate, reducing the burden of the screw 1 in squeezing out juice, thereby greatly improving the juice yield.

[0074] 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 guide plate 24, and the first cutting edge 3 and the drop port 21 cooperate to shear it into smaller pieces, which is the second pre-cutting; after the material enters the drop port 21, a part of the material accumulates in an area of ​​the screw 1 near the guide plate 24. 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.

[0075] After three pre-cuttings, the material is fully broken, 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 guide plate 24, 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 guide plate 24 and the upper surface of the main spiral 12 through the drop port 21. Due to the existence of the guide plate 24, a part of the material is squeezed between the guide plate 24 and the main spiral 12 before being cut by the first cutting edge 22 and the second cutting edge 121, which further helps to break the material into smaller pieces.

[0076] 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.

[0077] There are two ways to set the first cutting edge 22: Fig.11 As shown, the lower surface of the guide plate 24 is 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; or, the lower surface of the guide plate 24 protrudes outward to form a protrusion, and an edge of the protrusion on one side close to the blanking port 21 is the first cutting edge 22.

[0078] It can be understood that the groove 23 and the upper surface of the main spiral 12 cooperate to form a shearing zone for the third pre-cutting, or the protrusion and the upper surface of the main spiral 12 cooperate to form a shearing zone for the third pre-cutting. 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.

[0079] Specifically, at least part of the first cutting edge 22 is arc-shaped, straight-line, sawtooth-shaped, or broken-line-shaped, and at least part of the second cutting edge 121 is arc-shaped, straight-line, sawtooth-shaped, or broken-line-shaped. It should be noted that a part of the first cutting edge 22 is arc-shaped, and another part of the first cutting edge 22 is straight-line, sawtooth-shaped, or broken-line-shaped. A part of the second cutting edge 121 is arc-shaped, and another part 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 the material can be effectively sheared.

[0080] As a preferred embodiment, Figure 5 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.

[0081] 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: The screw comprises a screw body and a spiral arranged on the outer surface of the screw body; a first cutting edge is drivingly connected to the upper end of the screw; a pressing plate is installed between the screw body and the first cutting edge, and the pressing plate is provided with a material guide plate and a material drop port along the rotation direction of the screw, and the material guide plate has a surface continuous along the circumferential direction; The upper surface of the material guide plate extends outward from the center of the screw at least partially upward in a tapered shape; the first cutting edge is arranged along the upper surface of the material guide plate, and a shearing zone is formed between the material guide plate and the first cutting edge, and the shearing zone includes a tapered shearing zone arranged between the tapered surface of the material guide plate and the bottom surface of the first cutting edge.

2. The juicer pressing assembly according to claim 1, characterized in that: The first cutting edge passes through the blanking port along the rotating direction of the screw, and the gap of the conical shearing zone is arranged from large to small.

3. The juice extractor squeezing assembly according to claim 1, characterized in that: The upper surface of the material guide plate is provided with a first material guide surface and a second material guide surface in sequence along the rotation direction of the first cutting edge, the conical shear zone includes a first conical shear zone provided between the first material guide surface and the bottom surface of the first cutting edge, and a second conical shear zone provided between the second material guide surface and the bottom surface of the first cutting edge, and the height of the first conical shear zone is less than the height of the second conical shear zone.

4. The juicer pressing assembly according to claim 3, characterized in that: The height values ​​of the first conical shearing zone are equal everywhere along the circumferential direction, and the height values ​​of the second conical shearing zone gradually increase along the circumferential direction; the height values ​​of the first conical shearing zone and the second conical shearing zone are equal everywhere along the radial direction outward.

5. The juicer pressing assembly according to claim 1, characterized in that: The shearing zone also includes a buffer shearing zone arranged between the upper surface of the material guide plate and the bottom surface of the first cutting edge, and the buffer shearing zone is connected to the tapered shearing zone.

6. The juice extractor squeezing assembly according to claim 5, characterized in that: One of the buffer shearing zone and the conical shearing zone is arranged at a side of the shearing zone close to the center of the screw, and the other is arranged at a position of the shearing zone far away from the center of the screw.

7. The juice extractor squeezing assembly according to claim 5, characterized in that: One of the top surface and the bottom surface of the buffer shearing zone is a horizontal surface, and the other is inclined outwardly and upwardly along the center of the screw to form a conical surface.

8. The juicer pressing assembly according to claim 1, characterized in that: The spiral has a main spiral that tilts upward from the center to the outside, a first cutting edge is provided on the lower surface of the guide plate near the blanking port, and a second cutting edge is provided at the material-meeting end of the main spiral along the direction of rotation of the screw, and the first cutting edge cooperates with the second cutting edge to form shearing.

9. The juice extractor squeezing assembly according to claim 8, characterized in that: The lower surface of the material guide 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 material guide 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.

10. The juice extractor squeezing assembly according to any one of claims 1 to 9, characterized in that: The distance between the top surface and the bottom surface of the conical shearing zone is 0.5-2 mm.

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