Grinding structure

Abstract

The utility model discloses a grinding structure which comprises a fixed grinding disc, a movable grinding disc and a main shaft, the fixed grinding disc is fixedly arranged, the fixed grinding disc is coaxially stacked above the movable grinding disc, a gap with a set thickness is formed between the fixed grinding disc and the movable grinding disc, a material passing hole is formed in the fixed grinding disc, and the movable grinding disc is coaxially stacked above the movable grinding disc. A gap is formed between the fixed millstone and the movable millstone, the material passing hole is communicated with the gap, the main shaft coaxially penetrates through the fixed millstone and the movable millstone, the main shaft is fixedly connected with the movable millstone, and the main shaft rotates to drive the movable millstone to rotate relative to the fixed millstone. According to the grinding structure, due to the fact that the double grinding discs are arranged in a stacked mode, tea leaves enter the gap between the double grinding discs through the material passing holes to be ground, the situation that long and thin tea leaves leak out of the gap is directly avoided, the tea leaves can be fully ground, and the grinding quality is guaranteed; the thickness of the gap between the double millstones can be conveniently adjusted, and the effect of grinding powder with different thicknesses is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of grinding processing equipment and relates to a grinding structure. Background Art

[0002] In the existing equipment for food grinding, the mainstream grinding method is to use a conical grinding disc for crushing and grinding, such as the coffee grinder disclosed in Chinese invention patent CN113208463B, which can be used for grinding granular and block objects such as coffee, salt, pepper, black pepper, etc.

[0003] In some unpopular fields, there is also a demand for grinding some foods in the shape of thin sheets, strips, threads, etc. For example, the grinding of tea leaves can be used as matcha brewing or for the preparation of desserts. However, the existing mainstream grinding equipment cannot achieve the expected effect when used for tea grinding. The thin and long tea leaves can easily pass through the gaps in the conical grinding blade, resulting in incomplete and uneven crushing, and it is impossible to achieve good grinding quality. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a grinding structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A grinding structure comprises a fixed grinding disc, a movable grinding disc and a main shaft, wherein the fixed grinding disc is fixedly arranged, and is coaxially stacked on top of the movable grinding disc, and a gap of a set thickness is formed between the fixed grinding disc and the movable grinding disc, and a feeding hole is provided on the fixed grinding disc, and the feeding hole is connected to the gap, and the main shaft is coaxially penetrated through the fixed grinding disc and the movable grinding disc, and the main shaft is fixedly connected to the movable grinding disc, and when the main shaft rotates, the movable grinding disc is driven to rotate relative to the fixed grinding disc.

[0007] Furthermore, grinding lines located on the fixed grinding disc and the movable grinding disc are respectively arranged on both sides of the gap, and the grinding lines on both sides are arranged opposite to each other.

[0008] Furthermore, the grinding pattern includes convex ribs and grooves, the convex ribs and the grooves are arranged alternately in the form of a vortex structure, and the surface of the convex ribs is provided with a plurality of notches.

[0009] Further, the grinding structure further includes a bushing, the bushing includes a tray portion and a sleeve portion, the main shaft passes through the bushing and is splined to the bushing, the sleeve portion passes through the fixed grinding disc and the moving grinding disc, the sleeve portion is splined to the moving grinding disc, the tray portion abuts against the bottom of the moving grinding disc, and a fastening nut is threadedly connected to the main shaft, and the fastening nut abuts against the bottom of the tray portion.

[0010] Further, a spring is further included, the spring is sleeved on the main shaft, a retaining ring is provided on the outer periphery of the main shaft, and two ends of the spring abut against the retaining ring and the bushing respectively along the axial direction of the main shaft.

[0011] Further, the material passing hole is in a shape of a straight line and is arranged to pass through the center of the fixed grinding disc.

[0012] In summary, the beneficial effects of the present utility model are as follows:

[0013] The grinding structure of the present utility model, by arranging the stacked double grinding discs, the tea leaves enter the gap between the double grinding discs through the material passing hole for grinding, directly avoiding the situation that the slender tea leaves leak out from the gap, enabling the tea leaves to be fully ground, ensuring the grinding quality, and through the connection arrangement of the main shaft bushing and the moving grinding disc, the thickness of the gap between the double grinding discs can be conveniently adjusted to achieve the effect of grinding powders of different thicknesses. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model.

[0015] Figure 2 is Figure 1 a schematic structural diagram of the bottom view in

[0016] Figure 3 is Figure 1 an exploded structural diagram in

[0017] Figure 4 is a schematic structural diagram of the surface of the grinding disc.

[0018] Reference numerals in the drawings: 1, fixed grinding disc; 11, material passing hole; 12, convex rib; 13, groove; 2, moving grinding disc; 3, main shaft; 31, retaining ring; 4, bushing; 41, tray portion; 42, sleeve portion; 5, fastening nut; 6, spring. Detailed Embodiments

[0019] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0020] It should be noted that the illustrations provided in the following embodiments only schematically illustrate the basic concept of the present invention. Therefore, only the components related to the present invention are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0021] All directional indications (such as up, down, left, right, front, back, horizontal, vertical...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture. If this specific posture changes, then the directional indications will also change accordingly.

[0022] Due to reasons such as installation errors, the parallel relationship referred to in the embodiments of the present invention may actually be an approximate parallel relationship, and the vertical relationship may actually be an approximate vertical relationship.

[0023] The present invention provides a grinding structure, which is mainly used for grinding objects such as slender sheet-shaped, strip-shaped, and filamentous objects, preferably for grinding tea leaves.

[0024] Refer to Figure 1 and Figure 2 , the grinding structure includes a fixed grinding disc 1, a moving grinding disc 2, a main shaft 3, a fastening nut 5, and a bushing 4. Both the fixed grinding disc 1 and the moving grinding disc 2 are in a disc-shaped structure. The fixed grinding disc 1 and the moving grinding disc 2 are coaxially stacked, and the fixed grinding disc 1 is arranged above the moving grinding disc 2, and the fixed grinding disc 1 is fixedly arranged.

[0025] Feeding holes 11 are provided in the middle of both the fixed grinding disc 1 and the moving grinding disc 2. The main shaft 3 passes downward through the feeding holes 11 of both the fixed grinding disc 1 and the moving grinding disc 2 at the same time. A thread is provided at the bottom end of the main shaft 3, and the fastening nut 5 is connected to the bottom end of the main shaft 3, so that the fastening nut 5 is located below the moving grinding disc 2 and supports the moving grinding disc 2.

[0026] Refer to Figure 3, the bushing 4 includes a tray portion 41 and a sleeve portion 42. The sleeve portion 42 extends axially along the center of the tray portion 41. A hole for the main shaft 3 to pass through is axially formed through the sleeve portion 42 and the tray portion 41 on the bushing 4. When the bushing 4 is arranged, the bushing 4 is sleeved on the outer periphery of the main shaft 3. The sleeve portion 42 passes upward through the material passing holes 11 of the fixed grinding disc 1 and the moving grinding disc 2. The tray portion 41 abuts against the bottom of the moving grinding disc 2 and closes the lower side of the material passing hole 11 of the moving grinding disc 2. The fastening nut 5 abuts against the bottom of the tray portion 41.

[0027] When the bushing 4 and the main shaft 3 are arranged, the bushing 4 and the main shaft 3 can form an interference fit so that the bushing 4 and the main shaft 3 are relatively fixed. When the main shaft 3 rotates, the bushing 4 can be driven to rotate synchronously. A circumferential limit is provided between the bushing 4 and the moving grinding disc 2, so that when the bushing 4 rotates, the moving grinding disc 2 is driven to rotate synchronously.

[0028] In another embodiment, a protrusion is provided on the outer periphery of the main shaft 3, and a slot is provided in the bushing 4, so that the main shaft 3 and the bushing 4 form a spline connection.

[0029] In one embodiment, the outer periphery of the bushing 4 and the material passing hole 11 of the moving grinding disc 2 form a spline connection, so as to realize axial limitation.

[0030] A gap with a set thickness is formed between the fixed grinding disc 1 and the moving grinding disc 2. Tea leaves can enter the gap through the material passing holes 11 of the fixed grinding disc 1. Grinding lines are provided on the two opposite surfaces of the fixed grinding disc 1 and the moving grinding disc 2. The tea leaves entering the gap will be broken by the relative movement of the grinding lines on both sides. A certain gap is formed between the outer periphery of the moving grinding disc 2 and the inner periphery of the grinding cavity. During the crushing process, the tea leaves move radially outward synchronously until they reach the outer periphery of the moving grinding disc 2 and then fall out to form powder.

[0031] By changing the relative position of the main shaft 3 and the fixed grinding disc 1 in the axial direction, in this embodiment, the main shaft 3 is preferably arranged in the vertical direction. By changing the height position of the main shaft 3 relative to the fixed grinding disc 1, the height positions of the bushing 4 and the moving grinding disc 2 relative to the fixed grinding disc 1 can be adjusted, so as to adjust the thickness of the gap between the moving grinding disc 2 and the fixed grinding disc 1 and achieve grinding powder effects of different finenesses.

[0032] Refer to Figure 4 , the grinding lines include convex ribs 12 and grooves 13. The convex ribs 12 and the grooves 13 are arranged alternately in a vortex structure form with the center of the fixed grinding disc 1 or the moving grinding disc 2 as the center. A plurality of notches are evenly arranged on the surface of the convex ribs 12 along the rotation direction to enhance the crushing and grinding effect. The rotation direction of the moving grinding disc 2 is preferably along the positive direction of the vortex, so that the tea leaves are crushed and ground between the convex ribs 12 and are pushed radially outward between the grooves 13.

[0033] The material passing hole 11 is in a linear structure and is arranged to pass through the center of the fixed grinding disc 1 or the moving grinding disc 2. From the perspective of the axial projection view of the fixed grinding disc 1 or the moving grinding disc 2, the rotation of the moving grinding disc 2 relative to the fixed grinding disc 1 will cause the relative positions of the two material passing holes 11 to overlap and cross continuously, so that the tea leaves can fall on part of the surface of the moving grinding disc 2 and it is easier for them to enter the gap.

[0034] A spring 6 is also sleeved on the main shaft 3. A retaining ring 31 is arranged on the outer periphery of the main shaft 3. The upper and lower ends of the spring 6 respectively abut against the retaining ring 31 and the bushing 4, so that the spring 6 forms a certain downward elastic force on the bushing 4, making the bushing 4 abut tightly against the fastening nut 5 to ensure the stability of the gap thickness between the moving grinding disc 2 and the fixed grinding disc 1, and to avoid the change of the gap thickness caused by the movement such as crosstalk during the rotation of the moving grinding disc 2, thus causing uneven grinding.

[0035] Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims

1. A grinding structure, characterized in that, It includes a fixed grinding disc (1), a moving grinding disc (2) and a main shaft (3). The fixed grinding disc (1) is fixedly arranged, and the fixed grinding disc (1) is coaxially laminated above the moving grinding disc (2). A gap with a set thickness is formed between the fixed grinding disc (1) and the moving grinding disc (2). A material passing hole (11) is formed in the fixed grinding disc (1), and the material passing hole (11) communicates with the gap. The main shaft (3) passes through the fixed grinding disc (1) and the moving grinding disc (2) coaxially, and the main shaft (3) is fixedly connected to the moving grinding disc (2). During the rotation of the main shaft (3), the moving grinding disc (2) is driven to rotate relative to the fixed grinding disc (1).

2. The grinding structure according to claim 1, characterized in that, Grinding lines are respectively arranged on both sides of the gap on the fixed grinding disc (1) and the moving grinding disc (2), and the grinding lines on both sides are arranged oppositely.

3. A grinding structure according to claim 2, wherein, The grinding lines include convex ribs (12) and grooves (13), and the convex ribs (12) and the grooves (13) are arranged alternately in a spiral structure form. Multiple notches are arranged on the surface of the convex ribs (12).

4. A grinding structure according to claim 1, wherein The grinding structure further includes a shaft sleeve (4). The shaft sleeve (4) includes a tray part (41) and a sleeve shaft part (42). The main shaft (3) passes through the shaft sleeve (4) and is splined to the shaft sleeve (4). The sleeve shaft part (42) passes through the fixed grinding disc (1) and the moving grinding disc (2), and the sleeve shaft part (42) is splined to the moving grinding disc (2). The tray part (41) abuts against the bottom of the moving grinding disc (2). A fastening nut (5) is threadedly connected to the main shaft (3), and the fastening nut (5) abuts against the bottom of the tray part (41).

5. A grinding structure according to claim 4, wherein, It further includes a spring (6). The spring (6) is sleeved on the main shaft (3). A retaining ring (31) is arranged on the outer circumference of the main shaft (3). The two ends of the spring (6) abut against the retaining ring (31) and the shaft sleeve (4) respectively along the axial direction of the main shaft (3).

6. A grinding structure according to claim 1, wherein, The material passing hole (11) has a linear structure and is arranged to pass through the center of the fixed grinding disc (1).

Images