Juicing equipment and extrusion screw rod thereof

Abstract

The juicing device comprises a main machine and a juicing assembly detachably arranged on the main machine, a motor assembly is arranged in the main machine, the juicing assembly comprises the squeezing screw, the squeezing screw is provided with a connecting end, a connecting sleeve is arranged on a driving shaft of the motor assembly, and the connecting sleeve is connected with the main machine and the squeezing assembly. Spiral grooves or spiral convex ribs which are matched with each other are arranged between the connecting sleeve and the connecting end. According to the juicer, the extrusion screw can be reliably connected with the motor assembly during juicing work, the extrusion screw can be rapidly detached to be cleaned after work is completed, and the juicer is convenient to use, safe and reliable. In addition, the design difficulty of axial limiting of the equipment is reduced, and the design freedom degree is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of juice squeezing equipment, in particular to a juice squeezing equipment and an extrusion screw rod thereof. Background Art

[0002] Juicing equipment such as juicers and juicers use an extrusion screw to squeeze fruits, vegetables and other ingredients to obtain fruit and vegetable juice.

[0003] In existing juice extraction equipment, the extrusion screw is usually designed to be detachable from the main body to facilitate removal of the extrusion screw for comprehensive cleaning. To facilitate the extrusion of large-sized fruits and vegetables, Chinese utility model patent CN219353569U discloses a juicer in which the connection end of the extrusion screw is provided with an axial hole for plugging into the drive shaft. An axial limit structure is provided between the axial hole and the drive shaft. The axial limit structure includes a limit groove and a limit block. When the extrusion screw is in normal operation, the limit block is axially locked in the limit groove by the circumferential rotation of the drive shaft or the extrusion screw. When the extrusion screw is not in operation, the limit block can be disengaged from the limit groove. In one embodiment, the connection end of the extrusion screw is provided with a metal sleeve, the axial hole is located on the metal sleeve, and the limit groove is a spiral groove provided on the inner wall of the axial hole. The outer wall of the drive shaft is provided with a spiral rib corresponding to the spiral groove. When the axial hole is plugged into the drive shaft, the spiral rib rotates and inserts into the spiral groove. During rotation and insertion, the direction of rotation of the extrusion screw is opposite to the direction of rotation during normal operation. This solution has the following drawbacks:

[0004] During disassembly, the extrusion screw and the metal sleeve will be taken out together. However, since the extrusion screw will be subjected to the reaction force from fruits, vegetables and other ingredients when extruding, the extrusion screw and the metal sleeve will be tightly combined together due to the extrusion force, and it is more laborious to remove the metal sleeve; in addition, the metal sleeve is also easy to lose. Utility Model Content

[0005] In view of the above-mentioned defects, the technical problem to be solved by the present invention is to provide a juice extraction device and an extrusion screw thereof, so as to solve the problem that the metal sleeve is laborious to disassemble in the prior art and is also easy to be lost.

[0006] To this end, a first aspect of an embodiment of the present application provides an extrusion screw, comprising a screw body and a connecting end, wherein the lower end of the connecting end is provided with a spiral rib or a spiral groove, and the spiral rib or the spiral groove is arranged in an axial spiral.

[0007] In the above technical solution, preferably, a groove is provided on the bottom surface of the screw body, the connecting end is a connecting shaft, and is disposed at the center of the bottom surface of the groove, and the spiral rib is disposed at the lower end of the outer circumferential surface of the connecting shaft. In this implementation, the connecting end can have a smaller diameter, which is convenient to manufacture and low in cost.

[0008] A second aspect of an embodiment of the present application provides a juice extraction device, comprising a main unit and a juice extraction component detachably arranged on the main unit, wherein a motor component is provided in the main unit, and the juice extraction component comprises an extrusion screw, wherein the extrusion screw adopts the above-mentioned extrusion screw, and a connecting sleeve is provided on the drive shaft of the motor assembly, and spiral grooves and spiral ribs that match each other are provided between the connecting sleeve and the connecting end.

[0009] Based on the above technical solution, the connecting shaft of the extrusion screw is connected to the connecting sleeve via spiral ribs and spiral grooves. The connecting sleeve drives the extrusion screw to rotate to complete the juice extraction process. The extrusion screw maintains a secure connection with the motor assembly during the juice extraction process and can be quickly disassembled for cleaning after the operation is completed, making it easy to use, safe and reliable. Furthermore, the design difficulty of the axial limit of such equipment is reduced, and the degree of design freedom is increased.

[0010] In the above technical solution, preferably, a first gap is provided between the end surface of the spiral groove and the root of the spiral rib, allowing the connecting sleeve and the connecting end to move relative to each other, thereby loosening the spiral groove and the spiral rib. The provision of this gap allows the extrusion screw to move toward the connecting sleeve when subjected to a downward pressure force, causing the connecting sleeve to slightly reverse, loosening the spiral rib and the spiral groove, and facilitating the removal of the extrusion screw.

[0011] In the above technical solution, preferably, the connecting end is a connecting shaft, the spiral rib is arranged at the lower end of the outer circumferential surface of the connecting shaft, the first end of the connecting sleeve is provided with a spiral groove matching the spiral rib, the second end of the connecting sleeve is provided with a first axial hole matching the drive shaft of the motor assembly, at least two first ribs are provided on the inner wall of the first axial hole, at least two second ribs are provided on the drive shaft of the motor assembly, the first rib and the second rib cooperate with each other to drive the connecting sleeve to rotate, and a circumferential gap is provided on the side surfaces of the first rib and the second rib.

[0012] In the above technical solution, preferably, the motor assembly is composed of a motor and a reducer, the output shaft of the reducer constitutes the drive shaft of the motor assembly, the center of the end cover of the reducer has a through hole, and a first bearing and a second bearing are spaced apart on the inner wall of the through hole. The connecting sleeve is rotatably engaged with the first bearing, and the first end of the connecting sleeve extends out of the end cover and the main machine, the drive shaft is rotatably engaged with the second bearing, and the end of the second end of the connecting sleeve is provided with an outer flange, which is arranged between the first bearing and the second bearing and can move axially. This solution not only ensures smooth rotation of the connecting sleeve, but also reserves space for axial movement of the connecting sleeve, ensuring the locking and loosening between the spiral ribs and the spiral grooves.

[0013] In the above technical solution, preferably, the spiral groove and the first shaft hole are separated by a partition, which can prevent juice from entering the motor assembly and improve safety in use.

[0014] In the above technical solution, preferably, the depth of the first shaft hole is greater than the length of the drive shaft.

[0015] In the above technical solution, preferably, the juice extraction equipment is a juice extractor, a juicer or a household oil press, which is widely used.

[0016] As can be seen from the above technical solutions, the juice extraction device and its extrusion screw provided by the present invention solve the problems of the prior art, such as the non-detachable cutter, incomplete cleaning, and high cost. Compared with the prior art, the present invention has the following beneficial effects:

[0017] The tool and the connecting sleeve are connected by spiral ribs and spiral grooves. The rotation direction of the spiral ribs and spiral grooves is opposite to the rotation direction of the tool when it is working. During the operation of the tool, the spiral ribs and spiral grooves are in a tightened state and maintain a reliable connection with the motor assembly. After the work is completed, the tool can be quickly removed for cleaning, which is easy to operate, safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces and explains the drawings required for the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts.

[0019] Figure 1 A schematic diagram of the juice extraction device provided by the present invention;

[0020] Figure 2 for Figure 1 a cross-sectional view of the juice extraction apparatus shown;

[0021] Figure 3 This is a schematic diagram of the assembly structure of the extrusion screw and motor assembly in the utility model;

[0022] Figure 4 Schematic diagram of the extrusion screw in the present utility model;

[0023] Figure 5 for Figure 4 A schematic diagram of the extrusion screw as viewed from above;

[0024] Figure 6 This is a schematic diagram of the connecting sleeve in the present utility model;

[0025] Figure 7 for Figure 6 A schematic diagram of the rearward view of the connecting sleeve shown;

[0026] Figure 8 for Figure 6 A cross-sectional view of the connecting sleeve shown;

[0027] Figure 9 for Figure 2 A part in the figure is enlarged.

[0028] Figures 1-9 In the figure, the corresponding relationship between the parts is as follows:

[0029] Main unit 10, juice extraction component 20, feed cylinder 30;

[0030] Motor assembly 11, drive shaft 12, connecting sleeve 13, second rib 14, end cover 15, first bearing 16, second bearing 17;

[0031] Spiral groove 131, first shaft hole 132, first ridge 133, outer flange 134;

[0032] Juicing cylinder 21, extrusion screw 22;

[0033] Screw body 221 , connecting shaft 222 , groove 223 , spiral rib 224 . DETAILED DESCRIPTION

[0034] The following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0035] In order to provide a clearer explanation and description of the technical solution and implementation of the present invention, several preferred specific embodiments for implementing the technical solution of the present invention are introduced below.

[0036] It should be noted that the directional words such as "inside, outside", "front, back" and "left, right" in this article are expressed based on the product usage status. Obviously, the use of the corresponding directional words does not constitute a limitation on the scope of protection of this scheme.

[0037] like Figure 1 、 Figure 2 、 Figure 3 As shown, the present invention provides a juice extraction device, which includes a main unit 10 , a juice extraction component 20 and a feed barrel 30 .

[0038] Among them, the main unit 10 is provided with a motor assembly 11. The juicing assembly 20 is arranged at the upper end of the main unit 10, and includes a juicing barrel 21 and an extrusion screw 22. In the working state, the extrusion screw 22 is located in the juicing barrel 21. The feeding barrel 30 is arranged at the upper end of the juicing assembly 20. The feeding barrel 30 is provided with a discharge channel running from top to bottom, and the discharge channel is connected to the juicing barrel 21. Fruits, vegetables and other ingredients are put into the feeding barrel 30 from the top and enter the juicing barrel 21 through the discharge channel. The extrusion screw 22 is detachably connected to the drive shaft 12 of the motor assembly 11. The motor assembly 11 drives the extrusion screw 22 to rotate. Under the rotation and squeezing action of the extrusion screw 22, the residue and liquid are separated to obtain fruit and vegetable juice.

[0039] During the extrusion process, the extrusion screw 22 tends to move upward or sway under the reaction force of food materials such as fruits and vegetables. Therefore, the prior art adopts an axial limiting structure consisting of a limiting groove and a limiting block. The connecting end of the extrusion screw is provided with a metal sleeve, the limiting groove is set on the inner wall of the axial hole of the metal sleeve, and the limiting block is set on the drive shaft of the motor assembly. The metal sleeve and the inner hole of the extrusion screw are assembled using a prismatic structure. However, due to the reaction force of food materials such as fruits and vegetables when the extrusion screw is working, the extrusion screw and the metal sleeve are tightly combined. When the extrusion screw is disassembled, the extrusion screw and the metal sleeve will be removed together. It is also laborious to remove the metal sleeve from the extrusion screw, and the metal sleeve is also easily lost during disassembly and cleaning.

[0040] To this end, the present embodiment improves and optimizes the axial limiting structure of the extrusion screw, and only one component, the extrusion screw, needs to be disassembled, which facilitates disassembly and cleaning.

[0041] Specifically, if Figure 2 、 Figure 3 As shown, the extrusion screw 22 has a connecting end, and a spiral rib and a spiral groove that match each other are provided between the connecting end and the connecting sleeve 13 provided on the drive shaft 12 of the motor assembly 11. The spiral ribs and the spiral grooves are arranged in an axial spiral. The extrusion screw 22 forms a detachable axial limiting structure with the drive shaft 12 of the motor assembly 11 through the connecting sleeve 13. When the extrusion screw 22 is working, the spiral ribs and the spiral grooves interact with each other to drive the connecting sleeve 13 to rotate, and the rotation direction of the connecting sleeve 13 is opposite to the rotation direction of the extrusion screw 22 when it is working. The reaction force of fruits, vegetables and other food materials acts on the extrusion screw 22, generating a downward pulling force on the extrusion screw 22, thereby achieving axial limiting.

[0042] This embodiment is described by taking the spiral ribs arranged on the extrusion screw as an example. Obviously, the spiral ribs arranged on the connecting sleeve can also achieve the functions and technical effects of the present invention.

[0043] like Figure 4 、 Figure 5As shown, the extrusion screw 22 includes a screw body 221 and a connecting shaft 222. The connecting shaft 222 is used to mate with the connecting sleeve 13 provided on the drive shaft 12 to form the connecting end of the extrusion screw 22. Specifically, a groove 223 is provided on the bottom surface of the screw body 221, the connecting shaft 222 is disposed at the center of the bottom surface of the groove 223, and a spiral rib 224 is provided at the lower end of the outer circumferential surface of the connecting shaft 222.

[0044] In this embodiment, the spiral ribs are provided on the outer circumferential surface of the connecting shaft 222. This design allows the connecting shaft 222 to have a smaller diameter, facilitates processing, and reduces costs.

[0045] like Figure 3 、 Figure 6 、 Figure 7 、 Figure 8 As shown, the first end of the connecting sleeve 13 is provided with a spiral groove 131 that matches the spiral rib 224. The second end of the connecting sleeve 13 is provided with a first axial hole 132 that matches the drive shaft 12 of the motor assembly 11. The depth of the first axial hole 132 is greater than the length of the drive shaft 12 to reserve space for the connecting sleeve 13 to move. The inner wall of the first axial hole 132 is provided with at least two first ribs 133. The drive shaft 12 of the motor assembly 11 is provided with at least two second ribs 14. A circumferential gap is provided between the side surfaces of the first and second ribs. The first ribs 133 and the second ribs 14 cooperate with each other to drive the connecting sleeve 13 to rotate. The first end of the connecting sleeve is the end facing the extrusion screw 22 in the assembled state, and the second end is the other end opposite to the first end, that is, the end facing the motor assembly in the assembled state. The first end of the connecting sleeve 13 is used to connect to the extrusion screw 22, and the second end of the connecting sleeve 13 is used to connect to the motor assembly 11.

[0046] In the present invention, the juice extraction device can be a device with an extrusion screw, such as a juice extractor, a juicer, or a household oil press.

[0047] In this embodiment, Figure 2 、 Figure 3 、 Figure 9 As shown, the motor assembly 11 is an integrated structure composed of a motor and a reducer. The output shaft of the reducer constitutes the drive shaft 12 of the motor assembly 11. The center of the end cover 15 of the reducer has a through hole. The inner wall of the through hole of the end cover 15 is provided with a first bearing 16 and a second bearing 17. The connecting sleeve 13 is rotatably engaged with the first bearing 16, and the first end extends out of the end cover 15 and the main machine 10. The drive shaft 12 is rotatably engaged with the second bearing 17. The end of the second end of the connecting sleeve 13 is provided with an outer flange 134. The outer flange 134 is arranged between the first bearing 16 and the second bearing 17 and can move axially.

[0048] A first gap is defined between the end surface of the spiral groove and the root of the spiral rib, allowing the connecting sleeve and the connecting end to move relative to each other, thereby loosening the spiral groove and the spiral rib. In this embodiment, a first gap s is defined between the end surface of the first end of the connecting sleeve 13 and the root of the spiral rib. This first gap s is 2 to 6 mm. This first gap s allows the extrusion screw 22 to move toward the connecting sleeve 13 when subjected to a downward pressure, causing the connecting sleeve 13 to reverse, thereby loosening the spiral rib and the spiral groove, facilitating removal of the extrusion screw 22.

[0049] Below is Figure 9 The illustrated state illustrates the working principle of this embodiment in detail.

[0050] The motor assembly 11 drives the connecting sleeve 13 to rotate counterclockwise. With the cooperation of the spiral groove and the spiral rib, the connecting sleeve 13 drives the extrusion screw 22 to rotate clockwise to perform the juice extraction. At this time, there is a gap s between the upper end of the connecting sleeve 13 (the end face of the first end) and the root of the spiral rib.

[0051] During the juicing process, the food produces a downward squeezing force on the squeezing screw 22 , so that the squeezing screw 22 maintains a reliable connection downward with the connecting sleeve 13 and the motor assembly 11 .

[0052] After the juice extraction is completed, the feed barrel 30 is removed. At this time, the spiral ribs and spiral grooves between the extrusion screw 22 and the connecting sleeve 13 are in a tight fit, making it difficult to pull out the extrusion screw 22. To this end, the extrusion screw 22 is pressed downward. Due to the existence of the first gap s, the extrusion screw 22 moves downward toward the connecting sleeve 13 by the distance of the first gap s under the action of the downward pressure, causing the connecting sleeve 13 to slightly reverse (rotate clockwise), loosening the spiral ribs and spiral grooves. Then, when the extrusion screw 22 is pulled upward, the connecting sleeve 13 can move upward with it. When it hits the first bearing 16, the connecting sleeve 13 rotates counterclockwise, thereby pulling out the extrusion screw 22.

[0053] It can be seen that in this embodiment 1, the extrusion screw 22 can maintain a reliable connection with the motor assembly 11 during operation, and after the work is completed, the extrusion screw 22 can be quickly disassembled for cleaning, which is convenient, safe and reliable to use.

[0054] Based on the description of the above specific embodiments, the juice extraction device and the extrusion screw provided by the present invention have the following advantages compared with the prior art:

[0055] First, the connecting shaft of the extrusion screw is connected to the connecting sleeve through spiral ribs and spiral grooves. The extrusion screw is driven to rotate by the connecting sleeve to complete the juicing work. The extrusion screw can maintain a reliable connection with the motor assembly during the juicing work, and can be quickly disassembled for cleaning after the work is completed. It is easy to use, safe and reliable.

[0056] Second, a first gap s is provided between the end face of the spiral groove and the root of the spiral rib. The setting of the first gap s enables the extrusion screw to move toward the connecting sleeve when subjected to a downward pressure force, causing the connecting sleeve to slightly reverse, loosening the spiral rib and the spiral groove, so that the extrusion screw can be easily pulled out.

[0057] Third, a through hole is provided in the center of the end cover of the reducer, and a first bearing and a second bearing are spaced apart on the inner wall of the through hole. An outer flange is provided at the end of the second end of the connecting sleeve, and the outer flange is arranged between the first bearing and the second bearing and can move axially, retaining the rotation space of the connecting sleeve, thereby realizing the rapid withdrawal of the extrusion screw.

[0058] Finally, it should be noted that the terms "comprise," "include," or any other variations thereof, as used herein, are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0059] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any structural changes with the same or similar technical solutions as the present invention fall within the scope of protection of the present invention.

Claims

1. An extrusion screw, comprising a screw body and a connecting end, characterized in that: The lower end of the connecting end is provided with a spiral rib or a spiral groove, and the spiral rib or the spiral groove is arranged in an axial spiral.

2. The extrusion screw according to claim 1, characterized in that A groove is provided on the bottom surface of the screw body. The connecting end is a connecting shaft, which is arranged at the center of the bottom surface of the groove. The spiral rib is arranged at the lower end of the outer circumferential surface of the connecting shaft.

3. A juice extraction device, comprising a main unit and a juice extraction assembly detachably mounted on the main unit, wherein the main unit is provided with a motor assembly, and the juice extraction assembly comprises an extrusion screw, characterized in that: The extrusion screw adopts the extrusion screw according to claim 1, and a connecting sleeve is provided on the driving shaft of the motor assembly. Mutually matching spiral grooves and spiral ribs are provided between the connecting sleeve and the connecting end.

4. The juice extraction device according to claim 3, characterized in that: A first gap is provided between the end surface of the spiral groove and the root of the spiral rib, for the connecting sleeve and the connecting end to move relative to each other, so that the spiral groove and the spiral rib are loosened.

5. The juice extraction device according to claim 3, characterized in that: The connecting end is a connecting shaft, the spiral rib is arranged at the lower end of the outer circumferential surface of the connecting shaft, the first end of the connecting sleeve is provided with a spiral groove matching the spiral rib, the second end of the connecting sleeve is provided with a first axial hole matching the drive shaft of the motor assembly, at least two first ribs are provided on the inner wall of the first axial hole, and at least two second ribs are provided on the drive shaft of the motor assembly. The first rib and the second rib cooperate with each other to drive the connecting sleeve to rotate, and a circumferential gap is provided on the side surfaces of the first rib and the second rib.

6. The juice extraction device according to claim 4, characterized in that: The first gap is provided between the end surface of the first end of the connecting sleeve and the root of the spiral rib.

7. The juice extraction device according to claim 5, characterized in that: The motor assembly is composed of a motor and a reducer. The output shaft of the reducer constitutes the drive shaft of the motor assembly. The center of the end cover of the reducer has a through hole. The first bearing and the second bearing are spaced apart on the inner wall of the through hole. The connecting sleeve is rotatably engaged with the first bearing, and the first end of the connecting sleeve extends out of the end cover and the main machine. The drive shaft is rotatably engaged with the second bearing. The end of the second end of the connecting sleeve is provided with an outer flange. The outer flange is arranged between the first bearing and the second bearing and can move axially.

8. The juice extraction device according to claim 5, characterized in that: The spiral groove and the first shaft hole are separated by a partition plate.

9. The juice extraction device according to claim 5, characterized in that: The depth of the first shaft hole is greater than the length of the driving shaft.

10. The juice extraction device according to claim 3, characterized in that: The juice extraction equipment is a juice extractor, a juice extractor or a household oil extractor.

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