A vertical grinder

Abstract

The present invention discloses a vertical grinder, which relates to the technical field of grinders. It includes a machine body, an annular outer blade, a grinding inner blade, a driving module, a container, an adjusting module, a cantilever mechanism and an upward limiter. The machine body is provided with a longitudinally through-going grinding chamber, the annular outer blade rotates in the grinding chamber, and the grinding inner blade is placed in the annular outer blade and forms a grinding gap. The driving module is connected to the annular outer blade by transmission, and the material chamber of the container is connected to the grinding chamber. The adjusting module contains a movable seat, an internal regulator and an external regulator, the movable seat and the internal regulator move longitudinally relative to the container, the external regulator rotates relative to the container, the internal regulator is threadedly connected to the external regulator, and the driving part of the internal regulator can push the driven part of the movable seat to move downward. The cantilever shaft of the cantilever mechanism is connected to the grinding inner blade and extends upward to the movable seat, the acting element pushes the grinding inner blade to move upward, and the upward limiter constrains the upward stroke of the movable seat. The longitudinal grinding chamber is used to avoid powder accumulation, and the adjusting structure accurately controls the grinding gap, thereby improving the grinding stability and reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of grinders, in particular to a vertical grinder. Background Art

[0002] Conical blade grinders are widely used in food processing, traditional Chinese medicine processing, and other fields due to their high grinding efficiency and controllable particle size. Their core working principle is to shear and grind the material through the rotation of the inner blade and the fixed outer blade, ultimately obtaining a powder of the desired particle size.

[0003] Currently, the mainstream conical blade grinders on the market generally use a rotating inner blade and a fixed outer blade, resulting in a lateral discharge method. Specifically, the ground powder must be discharged from the equipment through a laterally extending powder discharge channel. However, this laterally extending channel design presents a significant powder retention problem: since the inner wall of the channel cannot completely avoid material residue, especially when processing viscous materials (such as grains and certain traditional Chinese medicines), powder easily adheres to the inner wall of the channel. Long-term accumulation not only affects the smoothness of the discharge, but also may affect the quality of subsequent ground products due to the deterioration of the residual material.

[0004] To address the conveying issues associated with side-discharge, existing technologies typically incorporate a powder paddle or screw conveyor within the channel, using the mechanical motion of these components to transport the powder toward the powder outlet. While these structures can achieve a certain degree of powder discharge, the paddle blades and the pitch gap of the screw conveyor are prone to sticking to and trapping powder. On the one hand, sticky powder adheres to the surfaces of these components, gradually decreasing their conveying efficiency. On the other hand, residual powder trapped in the gaps is difficult to clean and easily breeds bacteria, which does not meet the stringent cleanliness requirements for equipment in the food and pharmaceutical industries. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a vertical grinder that uses a fixed grinding inner blade to cooperate with a rotating annular outer blade and adopts a cantilever adjustment structure to achieve vertical powder discharge.

[0006] A vertical grinder designed for this purpose includes a body provided with a longitudinally extending grinding chamber;

[0007] an annular outer blade, the annular outer blade being rotatably disposed in the grinding chamber;

[0008] A grinding inner knife, wherein the grinding inner knife is arranged inside the annular outer knife, and a grinding gap is formed between the grinding inner knife and the annular outer knife;

[0009] A driving module, the driving module being drivingly connected to the annular outer cutter;

[0010] A container, wherein a material cavity communicating with the grinding cavity is provided inside the container;

[0011] Adjustment module; the adjustment module includes a movable seat, an inner adjuster and an outer adjuster; the movable seat and the inner adjuster are both arranged to move longitudinally relative to the container, and the outer adjuster is arranged to rotate relative to the container;

[0012] The inner regulator is threadedly connected to the outer regulator;

[0013] The inner adjuster is provided with a driving part, and the movable seat is provided with a driven part located below the driving part. When the inner adjuster moves downward relative to the container, the driving part pushes the driven part to move downward;

[0014] A cantilever mechanism, the cantilever mechanism comprising at least a cantilever shaft and an action element, the cantilever shaft being connected to the grinding inner cutter and extending upward to be connected to the movable seat;

[0015] The action element is used to apply an action force to the grinding inner knife to push the grinding inner knife to move upward;

[0016] An upward limit portion is used to restrict the upward movement of the movable seat.

[0017] Preferably, the movable seat is provided with a connecting arm, and the cantilever shaft is connected to the connecting arm.

[0018] Preferably, the container is provided with an extension arm extending into the material chamber, the extension arm is provided above the grinding chamber, and the extension arm is provided with a first axial hole;

[0019] The cantilever shaft is disposed in the first shaft hole and is longitudinally movable relative to the extension arm.

[0020] Preferably, the connecting arm is provided with a second axial hole, and the cantilever shaft is passed through the second axial hole;

[0021] A first fastener is provided at the upper end of the cantilever shaft, and the first fastener abuts against the upper surface of the connecting arm;

[0022] The grinding inner cutter is provided with a third axial hole, the cantilever shaft extends downward through the third axial hole, the lower end of the cantilever shaft is connected to a second fastener, and a grinder fixing piece is provided between the second fastener and the grinding inner cutter;

[0023] A shaft sleeve assembly is sleeved on the cantilever shaft between the grinding inner cutter and the connecting arm; one end of the shaft sleeve assembly abuts against the connecting arm, and the other end abuts against the grinding inner cutter.

[0024] Preferably, the bushing assembly comprises a first bushing, a first bearing and a second bushing arranged in a longitudinal direction and sleeved on the cantilever shaft;

[0025] The first bearing is at least partially disposed within the first shaft hole.

[0026] Preferably, a second bearing and a third bearing are provided in the second shaft hole, and the cantilever shaft passes through the second bearing and the third bearing.

[0027] Preferably, the acting element is a spring and is sleeved on the cantilever shaft, one end of the spring is connected to the connecting arm, and the other end is connected to the extension arm.

[0028] Preferably, a movable guide space is formed between the movable seat and the inner adjuster, the lower side of the movable guide space is opened, and the container is at least partially inserted into the movable guide space.

[0029] Preferably, the driving module includes a gear transmission module and a driving motor, the motor shaft of the driving motor is drivingly connected to the gear transmission module, and the gear transmission module is drivingly connected to the annular outer cutter.

[0030] Compared with the prior art, the present invention brings many beneficial effects by optimizing the structural design:

[0031] First, the longitudinally penetrating grinding chamber is directly connected to the container material chamber, and the ground material can fall vertically along the grinding chamber to the material chamber, completely abandoning the traditional side discharge extension channel and auxiliary conveying components, solving the problem of powder storage and sticking from the root, and greatly improving the cleanliness of the equipment and material utilization rate, especially suitable for scenes with strict hygiene requirements.

[0032] Secondly, the coordination mechanism between the adjustment module and the cantilever mechanism significantly improves the accuracy and safety of the position control of the grinding inner knife. The action element continuously applies an upward force to the grinding inner knife, and the internal adjuster pushes the moving seat through the drive unit, driving the grinding inner knife to move downward, forming an independent drive logic of "elastic push up, mechanical push down". When the grinding inner knife moves upward, its movement is completely dominated by the action element and is not constrained by the internal adjuster. This design cleverly avoids the interference of the thread error between the external adjuster and the internal adjuster (such as insufficient machining accuracy, assembly clearance, etc.) on the position of the grinding inner knife. Even if there is an error in the thread transmission, the upward position of the grinding inner knife can be maintained accurately through the stable action force of the action element, effectively avoiding the risk of collision between the annular outer knife and the grinding inner knife due to position deviation, and significantly improving the safety of equipment operation.

[0033] At the same time, the upward limiter further ensures the stability of the inner grinding cutter's upward position by restricting the upward travel of the movable base. Combined with the force of the actuating element, it precisely controls the grinding gap between the inner grinding cutter and the annular outer cutter, ensuring consistent grinding particle size. This structural design not only simplifies adjustment operations but also compensates for the inherent defects of threaded transmission through optimized mechanical logic, improving grinding accuracy while reducing equipment maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0035] Figure 2 It is a schematic diagram of the decomposition structure of the present invention;

[0036] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0037] Figure 4 Schematic diagram of the cross-sectional structure of the cantilever mechanism;

[0038] Figure 5 Schematic diagram of the decomposed structure of the cantilever mechanism;

[0039] Figure 6 This is a schematic diagram of the decomposition structure of the adjustment module;

[0040] Figure 7 Schematic diagram of the cross-sectional structure of the drive module;

[0041] Figure 8 for Figure 3 Enlarged structural diagram at point A in the middle. DETAILED DESCRIPTION

[0042] The following embodiments of the technical solution of the present application are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0044] In the description of the implementation methods of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0045] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0047] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0048] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application 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 should not be understood as limiting the embodiments of the present application.

[0049] In the description of the embodiments of this application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0050] See also Figures 1-8, a vertical grinder, the vertical grinder includes a body 10, the body 10 is provided with a longitudinally through grinding chamber 100; an annular outer knife 20, the annular outer knife 20 is rotatably arranged in the grinding chamber 100; a grinding inner knife 30, the grinding inner knife 30 is arranged in the annular outer knife 20, and a grinding gap is formed between the grinding inner knife 30 and the annular outer knife 20; a driving module 50, the driving module 50 is transmission-connected to the annular outer knife 20; a container 60, the container 60 is provided with a material chamber 610 that is interconnected with the grinding chamber 100; an adjusting module 70; the adjusting module 70 includes a movable seat 710, an inner adjuster 720 and an outer adjuster 730; the movable seat 710 and the inner adjuster 720 are both arranged to move longitudinally relative to the container 60, and the outer adjuster 730 0 is rotatably arranged relative to the container 60; the inner adjuster 720 is threadedly connected to the outer adjuster 730; the inner adjuster 720 is provided with a driving part 721, and the movable seat 710 is provided with a driven part 711 located below the driving part 721. When the inner adjuster 720 moves downward relative to the container 60, the driving part 721 pushes the driven part 711 to move downward; the cantilever mechanism 40, the cantilever mechanism 40 at least includes a cantilever shaft 410 and an action element, the cantilever shaft 410 is connected to the grinding inner cutter 30 and extends upward to be connected to the movable seat 710; the action element is used to apply an action force to the grinding inner cutter 30 to push the grinding inner cutter 30 to move upward; the upward limit part 90, the upward limit part 90 is used to constrain the upward movement stroke of the movable seat 710.

[0051] Operating Principle of the Vertical Grinding Mill: When the vertical grinding mill is in operation, the drive module 50 drives the annular outer blade 20 to rotate at high speed within the longitudinally extending grinding chamber 100. After the material to be ground enters the grinding chamber 100 from above, it falls into the grinding gap between the grinding inner blade 30 and the annular outer blade 20. Due to the shearing and grinding action of the rotating annular outer blade 20 and the relative stillness of the grinding inner blade 30, the material is crushed into powder. The crushed powder then falls directly down the longitudinally extending grinding chamber 100 under the influence of gravity and enters the material cup 80 of the container below for collection, thus realizing a vertically integrated "grinding-discharging" process, and material transfer can be completed without the need for additional conveying components.

[0052] The position adjustment of the grinding inner knife is achieved through the coordinated action of the adjustment module and the cantilever mechanism. The specific process is as follows:

[0053] Downward Adjustment Process: To increase the grinding gap, the outer adjuster is rotated in the first direction. Because it is threadedly connected to the inner adjuster, its rotation causes the inner adjuster to move downward relative to the container. At this point, the inner adjuster's drive unit simultaneously moves downward and contacts the driven unit of the movable base, pushing the movable base downward. The cantilever shaft connected to the movable base then drives the inner grinding cutter downward until the desired grinding gap is achieved.

[0054] Upward adjustment process: When the grinding gap needs to be narrowed, the outer adjuster is rotated in the second direction. The inner adjuster, driven by the threaded drive, moves upward relative to the container, separating the driver and follower. This allows the movable seat, cantilever shaft, and inner grinding blade to move upward. Under the upward force exerted by the active element on the inner grinding blade, all three components move upward synchronously. The first is the normal limit stop, which stops the inner grinding blade from moving when the follower re-engages the driver. This represents the normal position for grinding gap adjustment. The second is the over-upward limit stop. If the movable seat, cantilever shaft, and other synchronously moving parts continue to move upward due to operational or other factors and encounter the upward limit stop, the upward limit will restrict further movement, thereby preventing abnormalities caused by excessive upward movement of the inner grinding blade. The purpose of the over-upward limit stop is that the inner grinding blade is a conical blade that is very close to the annular outer blade at the minimum grinding gap. If the over-upward limit stop relies on the inner adjuster with threaded drive, it is prone to blade collision.

[0055] During the entire adjustment process, the acting element always provides an upward force for the grinding inner knife, while the internal adjuster only pushes the grinding inner knife downward through mechanical transmission when adjusting downward. The two have a clear division of labor, ensuring that the position adjustment of the grinding inner knife is accurate and stable.

[0056] In the present invention, the upward limiter 90 can be fixedly mounted on the outer regulator 730 or on the container 60. It can even be mounted on the sealing cover 770, which covers the outer regulator 730. The optimal solution is that the upward limiter 90 is mounted on the outer regulator 730 and the two are integrally formed.

[0057] Furthermore, both the upward limiter 90 and the movable base 710 are annular structures. The most preferred positioning scheme for the upward limiter 90 is to engage with the upper surface of the movable base 710. Of course, the upward limiter 90 can also engage with the upper end of the cantilever shaft 410 to achieve positional restraint. Furthermore, the upward limiter 90 can engage with other components that move upward simultaneously.

[0058] See also Figure 3The container 60 is provided with a boss 600, and the boss 600 is located directly below the inner regulator 720. The boss 600 serves to limit the downward movement of the inner regulator 720. The purpose of this design is, on the one hand, to prevent the inner regulator from excessively pushing the movable seat and the inner grinding knife downward through the driving part, and to avoid the grinding gap between the inner grinding knife and the annular outer knife being too large beyond a reasonable range, thereby ensuring the grinding accuracy; on the other hand, to avoid the risk of the threaded connection between the inner regulator and the outer regulator being disengaged due to excessive downward movement, thereby ensuring the stability of the transmission structure of the adjustment module, and further ensuring the reliable and controllable adjustment process of the inner grinding knife.

[0059] See also Figure 3 The boss 600 is annular in structure, and a rotating ring 740 is provided below the boss 600, which is rotatably matched with the boss 600 and fixedly connected to the external adjuster 730. The upper surface of the rotating ring 740 is in contact with the lower surface of the boss 600, and a number of positioning protrusions 741 are provided on the upper surface of the rotating ring 740, and a number of positioning grooves are provided on the lower surface of the boss 600. As the rotating ring 740 and the external adjuster 730 rotate synchronously, the positioning protrusions 741 disengage from the original positioning groove and enter the next positioning groove. This structure can constrain the rotation of the rotating ring 740 and the external adjuster 730, preventing the two from rotating arbitrarily and causing the position of the grinding inner knife to change.

[0060] See also Figure 3 、 Figure 6 and Figure 8 In an embodiment in which the upward limiting portion 90 is annular in structure and is arranged on the outer adjuster 730, a plurality of limiting grooves 731 are arranged along the circumference on the lower surface of the upward limiting portion 90, and a mounting hole 722 is provided on the inner adjuster 720. An elastic member 780 is provided in the mounting hole 722, and the elastic member 780 can be movably inserted into any of the limiting grooves 731. When the outer adjuster is rotated to adjust the position of the inner grinding knife, the inner adjuster moves longitudinally along with the threaded transmission of the outer adjuster. At this time, the elastic member can be movably inserted into different limiting grooves under the action of the elastic force. On the one hand, this structure can provide clear positioning feedback for the adjustment process. Every time the elastic member is stuck in the limiting groove, an obvious tactile or sound prompt will be generated, which makes it easier for the operator to accurately control the adjustment range of the grinding gap and improve the convenience and accuracy of the operation. On the other hand, the plug-in cooperation between the elastic part and the limiting groove can form an effective damping positioning, which can prevent the external adjuster and the internal adjuster from rotating relative to each other due to the gap in the threaded connection during the operation or vibration of the equipment, and avoid accidental changes in the position of the grinding inner knife, thereby ensuring the stability of the grinding gap and further ensuring the consistency of the grinding effect.

[0061] See also Figure 6 and Figure 8The elastic member 780 includes a positioning post 781 that is movably disposed within the mounting hole 722, and a spring member 782 connected to the positioning post 781. In its natural state, the spring member is in an extended state, exerting an outward elastic thrust on the positioning post, pushing the outer end of the positioning post out of the mounting hole and inserting it into the corresponding limiting groove, forming a stable positioning fit. When the external adjuster is rotated for adjustment, the external adjuster drives the upward limiting portion to rotate synchronously, and the inner wall of the limiting groove generates a lateral thrust on the positioning post. This thrust overcomes the elastic force of the spring member, pushing the positioning post to retract into the mounting hole, and the spring member is compressed accordingly, at which point the positioning post is separated from the current limiting groove.

[0062] See also Figure 3 and Figure 4 The movable base 710 is provided with a connecting arm 750, to which the cantilever shaft 410 is connected. The connecting arm, as the connecting medium between the cantilever shaft and the movable base, plays a key role in force transmission and structural connection. At the same time, the single-arm structure does not affect the falling of the material in the material chamber 610.

[0063] See also Figure 3 The container 60 is provided with an extension arm 620 extending into the material chamber 610. The extension arm 620 is arranged above the grinding chamber 100 and is provided with a first axial hole 630. The cantilever shaft 410 is arranged in the first axial hole 630 and is arranged to move longitudinally relative to the extension arm 620. From the guiding perspective, the first axial hole provides a precise guiding constraint for the longitudinal movement of the cantilever shaft, ensuring that the cantilever shaft always moves along the preset longitudinal trajectory when driving the grinding inner knife to move up and down, avoiding the uneven grinding gap between the grinding inner knife and the annular outer knife due to the offset of the cantilever shaft, and ensuring the stability of the grinding accuracy. From the support perspective, the extension arm forms a stable support for the cantilever shaft through the first axial hole, which can effectively offset the influence of the radial force generated by the rotation of the annular outer knife during the grinding process on the cantilever shaft, reduce the shaking or vibration of the cantilever shaft, and thereby reduce the position fluctuation of the grinding inner knife, ensure the matching stability between the grinding inner knife and the annular outer knife, and improve the reliability of the equipment operation.

[0064] See also Figures 3 to 5The connecting arm 750 is provided with a second axial hole 760, and the cantilever shaft 410 is passed through the second axial hole 760; the upper end of the cantilever shaft 410 is provided with a first fastener 460, and the first fastener 460 abuts against the upper surface of the connecting arm 750; the grinding inner cutter 30 is provided with a third axial hole 300, and the cantilever shaft 410 extends downward through the third axial hole 300, and the lower end of the cantilever shaft 410 is connected with a second fastener 440, and a grinder fixing part 430 is provided between the second fastener 440 and the grinding inner cutter 30; a shaft sleeve assembly 450 is sleeved on the cantilever shaft 410 between the grinding inner cutter 30 and the connecting arm 750; one end of the shaft sleeve assembly 450 abuts against the connecting arm 750, and the other end abuts against the grinding inner cutter 30. The first fastener at the upper end of the cantilever shaft abuts against the upper surface of the connecting arm, and the lower end is connected to the grinding inner cutter through the second fastener and the grinder fixing piece and supported and abutted by the shaft sleeve assembly located in the middle. This upper and lower fastening method can firmly fix the grinding inner cutter on the cantilever shaft, preventing the grinding inner cutter from axial movement or relative rotation during the grinding process, and ensuring the matching accuracy of the grinding inner cutter and the annular outer cutter.

[0065] Regarding the cantilever shaft 410 of the vertical grinder, it can also be connected to the grinding inner blade 30 and the connecting arm 750 using existing connection methods, and is not limited to the solution disclosed in this application.

[0066] See also Figure 5The grinder fixture 430 is equipped with several upwardly extending inserts 431. Several slots are provided on the lower surface of the inner grinding blade 30, into which the inserts 431 are inserted for assembly. The grinder fixture 430 is provided with a countersunk hole, within which a fourth bearing 490 is positioned. The cantilever shaft 410, after passing through the inner grinding blade 30, is inserted into the fourth bearing 490. The upwardly extending inserts on the grinder fixture mate with the slots on the lower surface of the inner grinding blade, precisely constraining the circumferential and radial position of the inner grinding blade and effectively preventing eccentricity during assembly and grinding. This plug-in structure achieves positioning through shape matching, ensuring that the central axis of the inner grinding blade aligns with a preset reference, avoiding uneven grinding gaps between the inner grinding blade and the annular outer blade due to positional deviation, thereby ensuring consistent ground particle size. Furthermore, a fourth bearing is provided within the countersunk hole of the grinder fixture, and the cantilever shaft, after passing through the inner grinding blade, is inserted into the fourth bearing. This design further ensures the concentricity of the cantilever shaft and the inner grinding blade. The fourth bearing provides stable radial support for the cantilever shaft, reducing radial runout during rotation or longitudinal movement. This ensures that the internal grinding cutter maintains stable operation around the preset axis while the cantilever shaft moves or operates. The plug-in fit of the insert and slot, combined with the support provided by the fourth bearing, effectively positions the internal grinding cutter and guides the cantilever shaft. This improves the installation accuracy and operational stability of the internal grinding cutter, avoiding problems such as poor grinding results and increased cutter wear caused by eccentricity or insufficient concentricity, and thus extending the service life of the equipment.

[0067] Furthermore, to enhance the locking force, a first washer 441 may be disposed between the grinder fixture 430 and the second fastener 440. The second fastener 440 may be threadedly connected to the cantilever shaft 410 using a nut. This threaded engagement sequentially clamps and secures the first washer 441, grinder fixture 430, inner grinding blade 30, and sleeve assembly 450. Furthermore, a second washer 461 may be disposed between the first fastener 460 and the connecting arm 750. The first fastener 460 may be threadedly connected to the cantilever shaft 410 using a nut. In this embodiment, the number of first and second washers 441 and 461 may be adjusted as needed.

[0068] See also Figure 3 and Figure 4, the bushing assembly 450 includes a first bushing 451, a first bearing 452 and a second bushing 453 arranged in the longitudinal direction and sleeved on the cantilever shaft 410; the first bearing 452 is at least partially arranged in the first shaft hole 630. The first bearing is a core component to ensure concentricity. Since it is at least partially located in the first shaft hole, in the process of the bushing assembly moving longitudinally with the cantilever shaft, the outer ring of the first bearing and the inner wall of the first shaft hole always maintain a stable fit, and the inner ring moves synchronously with the cantilever shaft, which can provide continuous and precise radial guidance for the cantilever shaft, effectively restrain the radial deviation of the cantilever shaft, and ensure that the cantilever shaft always moves along the preset longitudinal axis, thereby ensuring the concentricity of the grinding inner cutter connected to the cantilever shaft, and avoiding uneven grinding gap due to concentricity deviation.

[0069] See also Figures 3 to 5 , a second bearing 470 and a third bearing 480 are provided in the second shaft hole 760, and the cantilever shaft 410 is passed through the second bearing 470 and the third bearing 480. The two bearings are arranged longitudinally to jointly provide stable radial support for the cantilever shaft. When the cantilever shaft moves longitudinally to adjust the position of the grinding inner cutter, or when it is affected by external forces such as vibration and grinding force during the operation of the equipment, the second bearing and the third bearing can effectively restrain the radial deviation of the cantilever shaft to ensure that it always moves along the preset axis. Compared with a single bearing support, this dual bearing design can further disperse the radial force on the cantilever shaft and reduce the risk of bending and deformation of the shaft body, thereby more reliably ensuring the concentricity of the cantilever shaft and the grinding inner cutter. This ensures that when the grinding inner cutter is ground in conjunction with the annular outer cutter, the gap between the two can remain uniform and stable, avoiding local excessive wear or uneven grinding particle size caused by concentricity deviation, significantly improving the grinding accuracy and operational reliability of the equipment.

[0070] In this vertical grinder, the action element is used to apply an action force to the grinding inner blade 30, and its function is to push the grinding inner blade 30 to move upward. Regarding the embodiment of the action element;

[0071] Example 1 of the actuating element: The actuating element is a spring 420 mounted on the cantilever shaft 410. One end of the spring 420 is connected to the connecting arm 750, and the other end is connected to the extension arm 620. In this embodiment, the spring pushes the connecting arm 750, thereby driving the movable seat 710, the cantilever shaft 410, and the inner grinding blade 30 upward.

[0072] Embodiment 2 of the active element: The active element is a spring disposed between the movable seat 710 and the container 60. The spring pushes the movable seat 710, the cantilever shaft 410 and the inner grinding knife 30 to move upward.

[0073] Embodiment 3 of the acting element: A first magnet is provided on the movable seat 710, and a second magnet is provided on the container 60. The first magnet and the second magnet repel each other to push the movable seat 710 to move upward, thereby driving the cantilever shaft 410 and the grinding inner knife 30 to move upward.

[0074] Embodiment 4 of the acting element: Based on the embodiment in which the upward limit part 90 is annular in structure and is arranged in the external regulator 730, the upward limit part 90 is provided with a third magnet, and the movable seat 710 is provided with a fourth magnet. The third magnet and the fourth magnet attract each other, thereby driving the movable seat 710, the cantilever shaft 410 and the grinding inner knife 30 to move upward.

[0075] See also Figure 3 and Figure 8 A movable guide space 700 is formed between the movable base 710 and the inner adjuster 720. The lower side of the movable guide space 700 is open, and the container 60 is at least partially inserted into the movable guide space 700. This structure can constrain the longitudinal movement trajectory of the movable base and the inner adjuster relative to the container, preventing them from offsetting or shaking during movement, ensuring accurate and stable adjustment, and thus ensuring the reliability of the grinding inner blade position adjustment.

[0076] See also Figure 7 The drive module 50 includes a gear transmission module 500 and a drive motor 510. The motor shaft of the drive motor 510 is in transmission connection with the gear transmission module 500, which is in transmission connection with the annular outer cutter 20. When the vertical grinder is started, the drive motor begins to operate, and the power output from its motor shaft is transmitted to the gear transmission module. The gear transmission module transmits the rotational motion and torque of the motor shaft to the annular outer cutter through the meshing transmission between gears. The gear transmission module 500 uses a plurality of gears that mesh with each other to achieve power transmission.

[0077] See also Figure 7 The gear transmission module 500 preferably comprises a first gear 520, a second gear 530, a third gear 540, and a fourth gear 550 meshing in sequence. The first gear 520 is connected to the motor shaft of the drive motor 510 to output power, thereby driving the second gear 530, the third gear 540, and the fourth gear 550 to rotate. The fourth gear 550 is connected to the annular outer blade 20, thereby driving the annular outer blade 20 to rotate.

[0078] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A vertical grinder, characterized in that: The vertical grinder comprises a body (10), wherein the body (10) is provided with a grinding chamber (100) extending longitudinally therethrough; an annular outer blade (20), the annular outer blade (20) being rotatably disposed in the grinding chamber (100); A grinding inner knife (30), wherein the grinding inner knife (30) is arranged inside the annular outer knife (20), and a grinding gap is formed between the grinding inner knife (30) and the annular outer knife (20); A driving module (50), the driving module (50) being in driving connection with the annular outer blade (20); A container (60), wherein a material chamber (610) communicating with the grinding chamber (100) is provided inside the container (60); An adjusting module (70); the adjusting module (70) comprises a movable seat (710), an inner adjuster (720), and an outer adjuster (730); the movable seat (710) and the inner adjuster (720) are both arranged to move longitudinally relative to the container (60), and the outer adjuster (730) is arranged to rotate relative to the container (60); The inner regulator (720) is threadedly connected to the outer regulator (730); The inner regulator (720) is provided with a driving portion (721), and the movable seat (710) is provided with a driven portion (711) located below the driving portion (721); when the inner regulator (720) moves downward relative to the container (60), the driving portion (721) pushes the driven portion (711) to move downward; A cantilever mechanism (40), the cantilever mechanism (40) comprising at least a cantilever shaft (410) and an action element, the cantilever shaft (410) being connected to the grinding inner cutter (30) and extending upward to be connected to the movable seat (710); The action element is used to apply an action force to the grinding inner knife (30) to push the grinding inner knife (30) to move upward; An upward limit portion (90), the upward limit portion (90) is used to constrain the upward movement stroke of the movable seat (710).

2. A vertical grinder according to claim 1, characterized in that: The movable seat (710) is provided with a connecting arm (750), and the cantilever shaft (410) is connected to the connecting arm (750).

3. A vertical grinder according to claim 2, characterized in that: The container (60) is provided with an extension arm (620) extending into the material chamber (610), the extension arm (620) is arranged above the grinding chamber (100), and the extension arm (620) is provided with a first axial hole (630); The cantilever shaft (410) is disposed in the first shaft hole (630) and is arranged to move longitudinally relative to the extension arm (620).

4. A vertical grinder according to claim 3, characterized in that: The connecting arm (750) is provided with a second axial hole (760), and the cantilever shaft (410) is passed through the second axial hole (760); A first fastener (460) is provided at the upper end of the cantilever shaft (410), and the first fastener (460) abuts against the upper surface of the connecting arm (750); The grinding inner blade (30) is provided with a third axial hole (300), the cantilever shaft (410) passes through the third axial hole (300) and extends downward, the lower end of the cantilever shaft (410) is connected to a second fastener (440), and a grinder fixing member (430) is provided between the second fastener (440) and the grinding inner blade (30); A shaft sleeve assembly (450) is sleeved on the cantilever shaft (410) between the grinding inner blade (30) and the connecting arm (750); one end of the shaft sleeve assembly (450) abuts against the connecting arm (750), and the other end abuts against the grinding inner blade (30).

5. A vertical grinder according to claim 4, characterized in that: The shaft sleeve assembly (450) comprises a first shaft sleeve (451), a first bearing (452), and a second shaft sleeve (453) arranged in a longitudinal direction and sleeved on the cantilever shaft (410); The first bearing (452) is at least partially disposed within the first shaft hole (630).

6. A vertical grinder according to claim 4, characterized in that: A second bearing (470) and a third bearing (480) are provided in the second shaft hole (760), and the cantilever shaft (410) is passed through the second bearing (470) and the third bearing (480).

7. A vertical grinder according to any one of claims 3 to 6, characterized in that: The acting element is a spring (420) and is sleeved on the cantilever shaft (410). One end of the spring is connected to the connecting arm (750), and the other end is connected to the extension arm (620).

8. The vertical grinder according to claim 1, characterized in that: A movable guide space (700) is formed between the movable seat (710) and the inner adjuster (720), the lower side of the movable guide space (700) is opened, and the container (60) is at least partially inserted into the movable guide space (700).

9. The vertical grinder according to claim 1, characterized in that: The driving module (50) comprises a gear transmission module (500) and a driving motor (510), wherein a motor shaft of the driving motor (510) is in driving connection with the gear transmission module (500), and the gear transmission module (500) is in driving connection with the annular outer blade (20).

10. The vertical grinder according to claim 1, characterized in that: The container (60) is provided with a boss (600), and the boss (600) is located directly below the inner regulator (720); the boss (600) is used to constrain the downward movement stroke of the inner regulator (720).

Images