Screw and horizontal screw juicers

Abstract

The present invention discloses a screw and a horizontal screw juicer, wherein the screw comprises a screw body and a screw shaft, the screw body comprises a material advancing part, an extrusion and grinding part and a slag discharge part which are connected in sequence end to end along its longitudinal direction and are coaxial, the outer peripheral surface of the material advancing part is provided with an advancing spiral, the outer peripheral surface of the extrusion and grinding part is provided with a grinding spiral, the outer peripheral surface of the slag discharge part is provided with a plurality of slag discharge ribs which are distributed at intervals, the slag discharge ribs extend into inclined long strips along the axial direction of the slag discharge part, and extend into an inclined shape at a certain angle to the axis of the slag discharge part, the extrusion and grinding part and the slag discharge part are both roughly in the shape of a truncated cone and the outer diameters gradually decrease from the material advancing part to the slag discharge part; one end of the screw shaft is inserted into the interior of the material advancing part and is connected to the screw body as a whole, the slag discharge ribs change the trajectory of the original material moving in the spiral direction, which makes the material crushing and grinding more sufficient, further improves the crushing rate, and thus improves the juice yield.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing, in particular to a screw and a horizontal screw juicer. Background Art

[0002] The existing horizontal screw juicer uses screw extrusion to extract juice from fruits or vegetables. It generally includes a machine base, a hollow shell connected to one side of the machine base, a screw arranged horizontally in the shell, an extrusion barrel sleeved on the head of the screw and an end cover connected to the other side of the shell. A motor is provided in the machine base, which is connected to the screw. An annular gap is formed between the extrusion barrel and the screw. A through hole is provided in the middle position of one side of the end cover. The through hole is connected to the annular gap and forms a slag discharge channel. After the fruit and vegetable materials are squeezed by the screw, the juice flows out from the juice outlet at the lower part of the shell, and the pomace is discharged from the slag discharge channel.

[0003] Although the above structure can well meet people's needs, it has the problem that the extrusion and crushing rate of the fruit and vegetable materials is low, resulting in a low juice yield. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a screw that can improve the juice yield of a horizontal screw juicer.

[0005] The present invention also provides a horizontal screw juicer having the screw.

[0006] According to the first aspect of the present invention, the screw is used for a horizontal screw juicer, and the screw includes a screw body and a screw shaft. The screw body includes a material advancing part, an extrusion and grinding part, and a slag discharge part that are connected in sequence and coaxially along the axial direction of the screw body. The outer peripheral surface of the material advancing part is provided with a advancing spiral, the outer peripheral surface of the extrusion and grinding part is provided with a grinding spiral, and the outer peripheral surface of the slag discharge part is provided with a plurality of slag discharge ribs that are distributed at intervals. The slag discharge ribs extend along the axial direction of the slag discharge part and extend into inclined long strips at a certain angle to the axis of the slag discharge part. The outer contours of the extrusion and grinding part and the slag discharge part are both roughly in the shape of a truncated cone and the outer diameters gradually decrease from the material advancing part to the slag discharge part; one end of the screw shaft is fixedly connected to the material advancing part.

[0007] The screw according to the embodiment of the present invention has at least the following beneficial effects: by configuring the screw body to include a material advancing portion, an extrusion and grinding portion, and a slag discharge portion, the fruit and vegetable materials can be cut into small pieces by the advancing spiral when they just enter the pressing chamber, and then extruded, crushed, and ground by the grinding spiral, and finally further crushed and ground by the slag discharge ribs to improve the crushing rate, while the generated slag is fine and dry, and easy to discharge; at the same time, since the slag discharge ribs extend into inclined long strips along the axial direction of the slag discharge portion and extend into an inclined shape at a certain angle to the axis of the slag discharge portion, the extension direction of the grinding spiral and the slag discharge ribs are different, which makes the extrusion direction of the grinding spiral on the material different from the extrusion direction of the slag discharge ribs, and makes the material movement path have an inflection point, which changes the trajectory of the original material moving in the spiral direction, which makes the material crushing and grinding more sufficient, further improves the crushing rate, and thus improves the juice yield.

[0008] According to some embodiments of the present invention, a support shaft is further included, wherein the support shaft is coaxial with the screw shaft, and one end of the support shaft is fixedly connected to the slag discharge part.

[0009] According to some embodiments of the present invention, the cone angle of the slag discharge part is β, the cone angle of the extrusion grinding part is α, and 10α>β>2α.

[0010] According to some embodiments of the present invention, a plurality of spaced-apart extrusion grinding ribs are provided on the outer peripheral surface of the extrusion grinding portion, and the extrusion grinding ribs and the grinding spiral extend in a different direction.

[0011] According to some embodiments of the present invention, the extrusion and grinding ribs extend along the axis of the extrusion and grinding portion, and extend into an inclined strip shape at a certain angle to the axis of the extrusion and grinding portion.

[0012] According to the second aspect of the present invention, the horizontal screw juicer includes a base and a pressing assembly. A motor is provided in the base, and the motor has a motor shaft extending in the horizontal direction. The pressing assembly includes a shell with a cylindrical structure, a screw according to any embodiment of the first aspect of the present invention, and an extrusion barrel. One end of the shell is transversely mounted on one end of the base, and a pressing chamber is defined in the shell. The screw and the extrusion barrel are both transversely mounted in the pressing chamber. The extrusion barrel is sleeved on the outer peripheral side of the screw, and the screw shaft is connected to the motor shaft.

[0013] The horizontal screw juicer according to the embodiment of the present invention has at least the following beneficial effects: the horizontal screw juicer has a high crushing rate and a high juice rate of fruit and vegetable materials by adopting the above-mentioned screw, and the residue produced is fine and dry, and is easy to discharge.

[0014] According to some embodiments of the present invention, the shell is provided with a feed channel above the pressing chamber, the feed channel is provided with an upper port and a lower port, the lower port is communicated with the pressing chamber, the upper port cover is provided with a placement plate, the placement plate is provided with a first feed port and a second feed port, and the feed size of the first feed port is larger than the feed size of the second feed port.

[0015] According to some embodiments of the present invention, the feed channel includes a straight pipe section, the lower port is located in the straight pipe section, the second feed port and the straight pipe section are arranged relative to each other along the length direction of the feed channel, the position of the first feed port is offset relative to the straight pipe section, and the maximum width of the second feed port is less than or equal to 55 mm.

[0016] According to some embodiments of the present invention, the feed channel further includes a diameter-reducing pipe section located above the straight pipe section, and the inner diameter of the diameter-reducing pipe section gradually decreases from top to bottom.

[0017] According to some embodiments of the present invention, the inner wall of the extrusion cylinder is provided with a plurality of slag discharge ribs adapted to the slag discharge ribs.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0020] Figure 1 is a three-dimensional schematic diagram of a screw provided in an embodiment of the present invention;

[0021] Figure 2 1 is an exploded schematic diagram of a horizontal screw juicer provided in an embodiment of the present invention;

[0022] Figure 3 yes Figure 2 The schematic cross-sectional view of the assembled horizontal screw juicer shown;

[0023] Figure 4 yes Figure 3 A perspective schematic diagram of the barrel of the housing shown in ;

[0024] Figure 5 yes Figure 3 The structural schematic diagram of the extrusion cylinder shown, wherein (a) is the structural schematic diagram of the extrusion cylinder from one perspective, and (b) is the structural schematic diagram of the extrusion cylinder from another perspective.

[0025] Reference numerals:

[0026] Horizontal screw juicer 10;

[0027] Screw 100, screw body 110, material advancing portion 111, extrusion and grinding portion 112, slag discharge portion 113, advancing screw 114, grinding screw 115, slag discharge rib 116, extrusion and grinding rib 117, screw shaft 120, support shaft 130;

[0028] Housing 200, barrel 210, end cover 220, positioning hole 221, feed channel 230, straight pipe section 231, reducing pipe section 232, storage plate 240, first feed port 241, second feed port 242;

[0029] Extrusion cylinder 300, slag rib 310;

[0030] Machine base 400 , motor 410 , motor shaft 411 . DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] like Figures 1 to 3As shown, the screw 100 provided by the embodiment of the first aspect of the present invention is used for a horizontal screw juicer 10, and the screw 100 includes a screw body 110 and a screw shaft 120. The screw body 110 includes a material advancing portion 111, an extrusion and grinding portion 112, and a slag discharge portion 113 that are connected in sequence end to end along its longitudinal direction and are coaxial. The outer circumference of the material advancing portion 111 is provided with a advancing spiral 114, the outer circumference of the extrusion and grinding portion 112 is provided with a grinding spiral 115, and the outer circumference of the slag discharge portion 113 is provided with a plurality of slag discharge ribs 116 that are spaced apart. 2 and the slag discharge portion 113 have contours that are roughly in the shape of a truncated cone, and their outer diameters gradually decrease from the material advancing portion 111 to the slag discharge portion 113. The grinding spiral 115 and the slag discharge rib 116 extend in different directions. The slag discharge rib 116 extends along the axis of the slag discharge portion 113 and extends into an inclined long strip at a certain angle to the axis of the slag discharge portion 113. One end of the screw shaft 120 is fixedly connected to the material advancing portion 111. Specifically, one end of the screw shaft 120 is inserted into the interior of the material advancing portion 111 and is connected to the screw body 110 as a whole.

[0035] It should be noted that the “longitudinal direction” here refers to the length direction of the screw 100 , and the “head end” refers to the end of the screw body 110 close to the base 400 .

[0036] Specifically, the length of the material advancing portion 111 is greater than the length of the extrusion and grinding portion 112, the length of the extrusion and grinding portion 112 is greater than the length of the slag discharge portion 113, and the pitch of the advancing screw 114 is greater than the pitch of the grinding screw 115. The length of the screw body 110 is L, which is generally 90mm≤L≤250mm. This ensures that the effective length of the screw 100 for cutting and extruding the material is sufficient to ensure the cutting and extrusion effects, and the overall length of the screw 100 is reasonable, making the screw 100 compact and easy to assemble and use. The screw shaft 120 is a polygonal shaft, such as a regular hexagonal shaft, which not only facilitates the screw shaft 120 to transmit power to the screw body 110, but also effectively prevents the screw shaft 120 from rotating, ensuring the stability of the screw body 110.

[0037] By configuring the screw body 110 to include a material advancing portion 111, an extrusion and grinding portion 112, and a slag discharge portion 113, the fruit and vegetable materials can be cut into small pieces by the advancing spiral 114 just as they enter the pressing chamber of the shell 200, and then extruded, crushed, and ground by the grinding spiral 115, and finally further crushed and ground by the slag discharge rib 116 to improve the crushing rate. At the same time, the material residue produced is fine and dry, and is easy to discharge. At the same time, since the extension directions of the grinding spiral 115 and the slag discharge rib 116 are different, the extrusion direction of the grinding spiral 115 on the material is different from the extrusion direction of the slag discharge rib 116, and the material movement path has an inflection point, which changes the original trajectory of the material moving in the spiral direction, which makes the material crushing and grinding more complete, further improves the crushing rate, and thus improves the juice yield.

[0038] According to some specific embodiments of the present invention, referring to Figure 3 The cone angle of the slag discharge part 113 is β, and the cone angle of the extrusion and grinding part 112 is α, 10α>β>2α. In this embodiment, βα≈6α, which makes the material running direction change suddenly, and the space for extruded materials formed between the inner wall of the extrusion barrel 300 and the screw body 100 continuously changes in the axial direction, so the material running speed slows down, the crushing and grinding are more sufficient, and the slag discharge space becomes larger, which facilitates the discharge of slag.

[0039] According to some specific embodiments of the present invention, referring to Figure 3 , also includes a support shaft 130, the support shaft 130 is coaxial with the screw shaft 120 (i.e., the rotation center coincides), one end of the support shaft 130 is fixedly connected to the slag discharge part 113, specifically, one end of the support shaft 130 is inserted into the interior of the slag discharge part 113 and is connected to the screw body 110 as a whole, and the other end of the support shaft 130 is installed in the positioning hole 221 of the housing 200 of the horizontal screw juicer 10. The support shaft 130 supports and limits the screw 100 to prevent radial and axial movement of the screw 100, thereby ensuring the overall smooth and reliable operation of the screw 100 and effectively reducing the shaking and noise of the juicer 10 during operation. Furthermore, a wear-resistant bushing is provided in the positioning hole 221. The support shaft 130 cooperates with the wear-resistant bushing to axially limit the screw 100 to prevent radial shaking of the screw 100, thereby ensuring the accuracy of the extrusion and crushing gap value and the filtration gap value formed between the screw 100 and the inner wall of the extrusion barrel 300.

[0040] According to some specific embodiments of the present invention, the surface of the screw 100 is covered with a glaze layer, which can prevent juice molecules from penetrating into the screw 100 and prevent the screw 100 from being stained. The entire surface of the screw 100 is covered with the glaze layer, or only a portion of the surface is covered with the glaze layer.

[0041] According to some specific embodiments of the present invention, referring to Figure 1The outer peripheral surface of the extrusion and grinding portion 112 is provided with a plurality of extrusion grindings 117 distributed at intervals along the circumferential direction. The extrusion and grinding ribs 117 extend in a different direction from the grinding spiral 115. The addition of the extrusion and grinding ribs 117 hinders the flow of materials, making the material crushed and ground more fully. The extrusion and grinding ribs 117 extend in a different direction from the grinding spiral 115, which can disrupt the path and trajectory of the material running along the guide channel formed between adjacent grinding spirals 115, making the material crushed and ground more fully.

[0042] According to some specific embodiments of the present invention, referring to Figure 1 The extrusion grinding rib 117 extends along the axis direction of the extrusion grinding part 112, and extends into an inclined long strip at a certain angle to the axis of the extrusion grinding part 112, which is not easy to accumulate slag, the material runs smoothly, and it is easy to clean.

[0043] According to some specific embodiments of the present invention, referring to Figure 1 The slag discharge rib 116 is a curved structure, which extends the material's running path and makes the material crushing and grinding more complete.

[0044] According to the horizontal screw juicer 10 of the second embodiment of the present invention, Figure 2 and Figure 3 , including a machine base 400 and a pressing assembly, a motor 410 is provided in the machine base 400, and the motor 410 has a motor shaft 411 extending in the horizontal direction; the pressing assembly includes a cylindrical shell 200 and a screw 100 and an extrusion barrel 300 according to any embodiment of the first aspect of the present invention. One end of the shell 200 is horizontally installed on one end of the machine base 400, and a pressing chamber is defined in the shell 200. The screw 100 and the extrusion barrel 300 are both horizontally installed in the pressing chamber. The extrusion barrel 300 is sleeved on the outer peripheral side of the screw 100, and the screw shaft 120 is connected to the motor shaft 411.

[0045] Specifically, the cylindrical shell 200 includes a barrel 210 and an end cover 220. One end of the barrel 210 is horizontally installed on one end of the machine base 400, and the other end is installed with the end cover 220. A positioning hole 221 for installing the support shaft 130 is opened in the end cover 220. The barrel 210 and the end cover 220 together form a pressing chamber. The screw 100 and the extrusion barrel 300 are both located in the pressing chamber, and the extrusion barrel 300 is sleeved on the extrusion grinding part 112 and the slag discharge part 113 of the screw 100.

[0046] The horizontal screw juicer 10 adopts the screw 100 of any embodiment of the first aspect, and has a high crushing rate and a high juice rate of fruit and vegetable materials. At the same time, the residue produced is fine and dry, and is easy to discharge.

[0047] According to some specific embodiments of the present invention, referring to Figures 2 to 4The shell 200 is provided with a feed channel 230 above the squeezing chamber. The feed channel 230 is provided with an upper port and a lower port. The lower port is communicated with the squeezing chamber. The upper port cover is provided with a placement plate 240. The placement plate 240 is provided with a first feed port 241 and a second feed port 242. The feed size of the first feed port 241 is larger than the feed size of the second feed port 242. The juicer can squeeze foods with larger cross-sectional areas such as apples, oranges or tomatoes, without the need to pre-process large-volume foods, thereby realizing continuous whole-fruit juice extraction, being convenient for users to use, and improving user convenience.

[0048] According to some specific embodiments of the present invention, referring to Figures 2 to 4 The feed channel 230 includes a straight pipe section 231, the lower end of which is located in the straight pipe section 231, and the second feed port 242 is arranged relative to the straight pipe section 231 along the length direction of the feed channel 230. The maximum width of the second feed port 242 is less than or equal to 55 mm. The position of the first feed port 241 is offset to the right relative to the straight pipe section 231. Of course, it can also be offset to the left, which can prevent the user from accidentally inserting his fingers into the squeezing chamber and touching the screw 100, avoiding the occurrence of mechanical hazards, ensuring safety and reliability, and preventing accidental injury to the user. When it is necessary to put in long strips of fruits and vegetables, such as carrots, celery, etc., they can be directly put into the feed channel 230 from the second feed port 242, which is convenient for user operation and improves the user experience. Since the maximum width of the second feed port 242 is less than or equal to 55 mm, it is ensured that the user's hand cannot be inserted into the feed channel 230 from the second feed port 242, thereby achieving the purpose of safe operation.

[0049] According to some specific embodiments of the present invention, referring to Figures 2 to 4 The feed channel 230 also includes a reducing pipe section 232 located above the straight pipe section 231. The inner diameter of the reducing pipe section 232 gradually decreases from top to bottom, so that fruits and vegetables have an inertial force when falling and the products have a better appearance.

[0050] According to some specific embodiments of the present invention, referring to Figures 2 to 4 The maximum width of the first feed opening 241 is smaller than the minimum width of the feed channel 230. If the maximum size of the food exceeds the minimum width of the feed channel by a significant amount, the food can easily get stuck at the minimum width of the feed channel. However, if the maximum size of the food is smaller than the minimum width of the feed channel, the food will not get stuck. This can reduce the problem of food getting stuck while ensuring the convenience and safety of the product.

[0051] According to some specific embodiments of the present invention, referring to Figure 5The inner wall of the extrusion barrel 300 is provided with a slag discharge rib 310 that is compatible with the slag discharge rib 116. During the rotation of the screw 100, the slag discharge rib 116, the material, and the slag discharge rib 310 squeeze each other. At the same time, the rotation of the screw 100 and the mutual squeezing of the slag discharge rib 310 generate a force that pushes the material forward, allowing the material to be discharged from the slag outlet and increasing the slag discharge speed. Furthermore, the angle between the slag discharge rib 116 and the slag discharge rib 310 is an acute angle. Here, the angle refers to the angle obtained by projecting the slag discharge rib 116 and the slag discharge rib 310 from top to bottom, thereby increasing the force generated by the rotation of the screw 100 and the squeezing of the slag discharge rib 310 to push the material forward.

[0052] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A screw for a horizontal screw juicer, characterized in that: include: The screw body comprises a material advancing portion, an extrusion and grinding portion, and a slag discharge portion which are sequentially connected and coaxial along the axis of the screw body, the outer circumference of the material advancing portion is provided with an advancing spiral, the outer circumference of the extrusion and grinding portion is provided with a grinding spiral, the outer circumference of the slag discharge portion is provided with a plurality of slag discharge ribs distributed at intervals, the slag discharge ribs extend along the axis of the slag discharge portion and extend into an inclined long strip at a certain angle to the axis of the slag discharge portion, the outer contours of the extrusion and grinding portion and the slag discharge portion are both roughly in the shape of a truncated cone and the outer diameters of both gradually decrease from the material advancing portion to the slag discharge portion, the cone angle of the slag discharge portion is β, and the cone angle of the extrusion and grinding portion is α, β>α, so that the material running direction changes suddenly; a screw shaft, one end of which is fixedly connected to the material advancing portion; The grinding spiral and the slag discharge ribs extend in different directions, which not only makes the grinding spiral's extrusion direction on the material different from the extrusion direction of the slag discharge ribs, but also makes the material movement path have an inflection point, changing the original trajectory of the material moving in the spiral direction; The outer peripheral surface of the extrusion grinding portion is provided with a plurality of extrusion grinding ribs distributed at intervals. The extrusion grinding ribs extend in a different direction from the grinding spiral. The extrusion grinding ribs extend along the axial direction of the extrusion grinding portion and extend into an inclined long strip at a certain angle to the axis of the extrusion grinding portion.

2. The screw according to claim 1, characterized in that It also includes a support shaft, which is coaxial with the screw shaft, and one end of the support shaft is fixedly connected to the slag discharge part.

3. The screw according to claim 1, characterized in that 10α>β>2α。 4. A horizontal screw juicer, characterized in that: include: A machine base, wherein a motor is provided in the machine base, and the motor has a motor shaft extending in a horizontal direction; A pressing assembly, the pressing assembly includes a shell of a cylindrical structure, a screw and an extrusion barrel according to any one of claims 1 to 3, one end of the shell is transversely mounted on one end of the machine base, a pressing chamber is defined in the shell, the screw and the extrusion barrel are both transversely mounted in the pressing chamber, the extrusion barrel is sleeved on the outer circumference of the screw, and the screw shaft is connected to the motor shaft; the shell is provided with a feed channel above the pressing chamber, the feed channel is provided with an upper port and a lower port, the lower port is connected to the pressing chamber, the upper port cover is provided with a placement plate, the placement plate is provided with a first feed port and a second feed port, the feed size of the first feed port is larger than the feed size of the second feed port; the feed channel includes a straight pipe section, the lower port is located in the straight pipe section, the second feed port and the straight pipe section are arranged opposite to each other along the length direction of the feed channel, the position of the first feed port is offset relative to the straight pipe section, and the maximum width of the second feed port is less than or equal to 55 mm.

5. The horizontal screw juicer according to claim 4, characterized in that: The feed channel further includes a diameter-reducing pipe section located above the straight pipe section, and the inner diameter of the diameter-reducing pipe section gradually decreases from top to bottom.

6. The horizontal screw juicer according to claim 4 or 5, characterized in that: The inner wall of the extrusion cylinder is provided with a plurality of slag discharge ribs adapted to the slag discharge ribs.

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