Grinding equipment and grinding cutter thereof

Abstract

The utility model discloses grinding equipment and a grinding cutter thereof, the grinding equipment comprises a main machine and a grinding assembly arranged on the main machine, a motor assembly is arranged in the main machine, and the grinding assembly comprises a feeding cylinder, a discharging cylinder and the grinding cutter. The grinding cutter comprises grinding outer teeth and a connecting end arranged on the bottom faces of the grinding outer teeth, a connecting sleeve is arranged on a driving shaft of the motor assembly, and a spiral groove and a spiral protruding rib which are matched with each other are arranged between the connecting sleeve and the connecting end. According to the utility model, the grinding cutter can be reliably connected with the motor assembly during working, and can be quickly detached for cleaning after working is completed, so that the grinding cutter is convenient to use, safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding equipment, in particular to a grinding equipment and a grinding tool thereof. Background Art

[0002] Coffee, soybeans, mung beans and other bean grinding equipment uses the outer teeth on the grinding tool to cooperate with the inner teeth on the inner wall of the grinding chamber to grind the beans into bean powder for people to use.

[0003] During operation, this type of grinding equipment requires the grinding tool and the grinding chamber to maintain axial position. To this end, existing grinding equipment of this type typically employs a fixed structure for both the grinding tool and the grinding chamber. The grinding chamber is often connected using threads or snaps, while the grinding tool is directly fixed to the drive shaft of the motor assembly. This non-detachable design makes it inconvenient to clean the grinding tool. Utility Model Content

[0004] In view of the above-mentioned defects, the technical problem to be solved by the present invention is to provide a grinding device and a grinding tool thereof to solve the problem of inconvenient cleaning of the grinding tools in the prior art.

[0005] To this end, the first aspect of an embodiment of the present application provides a grinding tool, comprising grinding external teeth and a connecting end arranged on the bottom surface of the grinding external teeth, the outer shape of the grinding external teeth is conical, the lower end of the connecting end is provided with a spiral rib or a spiral groove, the spiral rib or the spiral groove is arranged in an axial spiral, the upper end of the grinding external teeth is provided with a rotating shaft, the upper end of the rotating shaft is provided with a threaded fixing portion, and a plurality of scrapers are provided around the connecting end, and the scrapers are rectangular.

[0006] In the above technical solution, preferably, the connecting end is a connecting shaft, and the spiral rib is arranged at the lower end of the outer circumferential surface of the connecting shaft. In this implementation, the connecting end can adopt a smaller diameter, which is convenient to process and low in cost.

[0007] The second aspect of the embodiment of the present application provides a grinding device, including a main body and a grinding assembly arranged on the main body, a motor assembly is provided in the main body, the grinding assembly includes a feed barrel, a discharge barrel and a grinding tool, the discharge barrel is arranged on the main body, the feed barrel is arranged on the discharge barrel, the grinding tool is arranged in the discharge barrel, the grinding tool adopts the above-mentioned grinding tool, a connecting sleeve is provided on the driving 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.

[0008] Based on the above technical solution, the connecting shaft of the grinding tool and the connecting sleeve are connected by spiral ribs and spiral grooves. The grinding tool is driven to rotate by the connecting sleeve to complete the grinding work. The grinding tool can maintain a reliable connection with the motor assembly during the grinding work, and can be quickly disassembled for cleaning after the work is completed. It is easy to use, safe and reliable.

[0009] 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 first gap allows the grinding tool 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 removal of the grinding tool.

[0010] 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.

[0011] In the above technical solution, preferably, the first gap is provided between the end surface of the first end of the connecting sleeve and the root of the spiral 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 depth of the first shaft hole is greater than the length of the drive shaft.

[0014] In the above technical solution, preferably, the discharge cylinder includes a discharge cylinder body, which is cylindrical, closed at the lower end, and open at the upper end. A discharge pipe is provided on the side wall of the discharge cylinder body, and the outer end of the discharge pipe is inclined downward.

[0015] In the above technical solution, preferably, the feed cylinder includes a feed cylinder body and a grinding chamber arranged at the lower end of the feed cylinder body, the feed cylinder body is cylindrical, and the upper end is open, the diameter of the feed cylinder body is the same as that of the discharge cylinder body, the lower end of the feed cylinder body is plugged and adapted to the open end of the discharge cylinder body, the grinding chamber is in the shape of a circular tube, and the inner wall of the grinding chamber is provided with grinding internal teeth, and a fixed seat is provided at the center of the upper end of the grinding chamber, the outer wall of the fixed seat is fixedly connected to the inner wall of the grinding chamber by a plurality of strip ribs, and the feed cylinder body and the grinding chamber are connected through the gaps between each of the strip ribs.

[0016] As can be seen from the above technical solutions, the grinding equipment and grinding tool provided by the present invention solve the problem of the existing technology that the tool cannot be disassembled and is inconvenient to clean. Compared with the existing technology, the present invention has the following beneficial effects:

[0017] The grinding 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, they can be quickly disassembled 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 grinding equipment provided by the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the grinding equipment shown;

[0021] Figure 3 for Figure 1 a cross-sectional view of the grinding apparatus shown;

[0022] Figure 4 This is a schematic diagram of the feed barrel in the present utility model;

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

[0024] Figure 6 This is a schematic diagram of a grinding tool in the present invention;

[0025] Figure 7 for Figure 6 A schematic diagram of the grinding tool as viewed from above;

[0026] Figure 8 This is a schematic diagram of the connecting sleeve in the utility model;

[0027] Figure 9 for Figure 8 A schematic diagram of the rearward view of the connecting sleeve shown;

[0028] Figure 10 for Figure 8 A cross-sectional view of the connecting sleeve shown;

[0029] Figure 11 This is a schematic diagram of the assembly relationship of the grinding tool, connecting sleeve and motor assembly in the present utility model;

[0030] Figure 12 for Figure 3 Enlarged view of part A in .

[0031] Figures 1-12 In the figure, the corresponding relationship between the parts is as follows:

[0032] Main unit 10, grinding assembly 20;

[0033] Motor assembly 11, drive shaft 12, connecting sleeve 13, second rib 14, end cover 15, first bearing 16, second bearing 17;

[0034] Feed cylinder 21, discharge cylinder 22, grinding tool 23;

[0035] Spiral groove 131, first shaft hole 132, first ridge 133, outer flange 134;

[0036] Discharge cylinder 221, discharge pipe 222;

[0037] Feeding cylinder 211, grinding chamber 212, grinding internal teeth 213, fixing seat 214, strip ribs 215;

[0038] Grind the external teeth 231 , the rotating shaft 232 , the nut 233 , the spiral ribs 234 , and the scraper 235 . DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] like Figure 1 、 Figure 2 、 Figure 3 As shown, the present invention provides a grinding device, which includes a main body 10 and a grinding assembly 20 arranged on the main body 10.

[0043] The main machine 10 includes a motor assembly 11 , and a connecting sleeve 13 is provided on a drive shaft 12 of the motor assembly 11 . The grinding assembly 20 is provided on the main machine 10 and includes a feed barrel 21 , a discharge barrel 22 and a grinding tool 23 .

[0044] The discharge barrel 22 includes a cylindrical body 221, which is closed at the lower end and open at the upper end. A discharge pipe 222 is provided on the sidewall of the body 221. The outer end of the discharge pipe 222 is tilted downward to facilitate powder discharge. In operation, the grinding tool 23 is disposed within the body 221 and is removably connected to the drive shaft 12 of the motor assembly 11 via a connecting sleeve 13.

[0045] like Figure 3 、 Figure 4 、 Figure 5 As shown, the feed barrel 21 includes a feed barrel body 211 and a grinding chamber 212 disposed at the lower end of the feed barrel body 211. The feed barrel body 211 is cylindrical with an open upper end. The diameter of the feed barrel body 211 is the same as that of the discharge barrel body 221. The lower end of the feed barrel body 211 is inserted and adapted to the open end of the discharge barrel body 221. The grinding chamber 212 is tubular, and the inner wall of the grinding chamber 212 is provided with grinding internal teeth 213. A fixed seat 214 is provided at the center of the upper end of the grinding chamber 212. The outer wall of the fixed seat 214 is fixedly connected to the inner wall of the grinding chamber 212 by a plurality of strip-shaped ribs 215. The feed barrel body 211 and the grinding chamber 212 are connected through the gaps between the strip-shaped ribs 215.

[0046] like Figure 6 、 Figure 7 As shown, the grinding tool 23 has grinding outer teeth 231. The outer grinding teeth 231 have a conical shape and are compatible with the grinding inner teeth 213. They are used to grind legumes such as coffee, soybeans, and mung beans. The upper end of the grinding outer teeth 231 is provided with a rotating shaft 232. The upper end of the rotating shaft 232 is provided with a threaded fixing portion. The rotating shaft 232 extends upward from the fixing seat 214 and is fixed by a nut 233. The lower end of the grinding outer teeth 231 is provided with a connecting end, which is inserted into the connecting sleeve 13 to achieve a detachable connection. Among them, the connecting end and the connecting sleeve 13 are provided with mutually matching spiral ribs and spiral grooves, and the spiral ribs and spiral grooves are arranged in an axial spiral.

[0047] During operation, the reaction force of coffee beans and other ingredients pushes the grinding chamber upward, causing it to move or sway, which in turn drives the grinding blade upward. Therefore, in existing technologies, the grinding blade is typically fixed to the motor assembly and cannot be disassembled. This makes cleaning the grinding blade difficult, leading to the accumulation of bean powder on the grinding blade. If left uncleaned for an extended period, this can breed bacteria and negatively impact physical and mental health.

[0048] To this end, this embodiment improves and optimizes the axial limiting structure of the grinding tool. The grinding tool 23 is detachably connected to the drive shaft 12 of the motor assembly 11 through a connecting sleeve 13, which allows for quick assembly and disassembly, and makes it easy to clean the grinding tool, thereby improving hygiene.

[0049] Specifically, in this embodiment, a connecting shaft is provided at the lower end of the connecting end of the grinding tool 23, a spiral rib 234 is provided on the outer circumferential surface of the connecting shaft, and a plurality of scrapers 235 are provided around the spiral rib 234. The scraper 235 is rectangular, and the outer edge is adapted to the inner wall of the discharge cylinder, and is used to scrape the powder obtained by grinding to the discharge pipe for output.

[0050] like Figure 6 、 Figure 7 、 Figure 8 、 Figure 9As shown, the first end of the connecting sleeve 13 is provided with a spiral groove 131 that matches the spiral rib 234, and 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 movement of the connecting sleeve 13. At least two first ribs 133 are provided on the inner wall of the first axial hole 132, and at least two second ribs 14 are provided on the drive shaft 12 of the motor assembly 11. 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 13 is the end facing the grinding tool 23 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 11 in the assembled state. The first end of the connecting sleeve 13 is used to connect to the grinding tool 23, and the second end of the connecting sleeve 13 is used to connect to the motor assembly 11.

[0051] When the grinding tool 23 is working, the motor assembly 11 drives the connecting sleeve 13 to rotate, and the interaction between the spiral ribs and the spiral grooves further drives the grinding tool 23 to rotate. The rotation direction of the connecting sleeve 13 is opposite to the rotation direction of the grinding tool 23 when it is working. The reaction force of coffee beans and other ingredients acts on the grinding tool 23, generating a downward pulling force on the grinding tool 23, thereby achieving axial limitation.

[0052] This embodiment uses the example of a spiral rib provided on a grinding tool. The spiral rib is provided on the outer circumference of the connecting shaft 232. This design allows the connecting shaft 232 to have a smaller diameter, facilitating machining and reducing costs. Obviously, the functions and technical effects of the present invention can also be achieved by providing the spiral rib on the connecting sleeve.

[0053] 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, 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 grinding tool 23 to move toward the connecting sleeve 13 when subjected to a downward pressure, causing the connecting sleeve 13 to rotate, thereby loosening the spiral rib and the spiral groove, facilitating removal of the grinding tool 23.

[0054] In addition, in this embodiment, Figure 9 、 Figure 10As 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.

[0055] Below Figure 3 、 Figure 10 The illustrated state illustrates the working principle of this embodiment in detail.

[0056] 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 grinding tool 23 to rotate clockwise to perform grinding. 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.

[0057] During the grinding process, the food produces a downward squeezing force on the grinding cutter 23 , so that the grinding cutter 23 maintains a reliable connection downward with the connecting sleeve 13 and the motor assembly 11 .

[0058] After the grinding work is completed, the feed barrel 21 is removed. At this time, the spiral ribs and spiral grooves between the grinding tool 23 and the connecting sleeve 13 are in a tight fit, making it difficult to pull out the grinding tool 23. To this end, the grinding tool 23 is pressed downward. Due to the existence of the first gap s, the grinding tool 23 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 grinding tool 23 is pulled upward, the connecting sleeve 13 can move upward accordingly. When it presses against the first bearing 16, the connecting sleeve 13 rotates counterclockwise, thereby pulling out the grinding tool 23.

[0059] It can be seen that in this embodiment 1, the grinding tool 23 can maintain a reliable connection with the motor assembly 11 during operation, and the grinding tool 23 can be quickly removed for cleaning after the work is completed. It is easy to use, safe and reliable.

[0060] Based on the description of the above specific embodiments, the grinding device and grinding tool provided by the present invention have the following advantages compared with the prior art:

[0061] First, the connecting shaft of the grinding tool is connected to the connecting sleeve through spiral ribs and spiral grooves. The grinding tool is driven to rotate through the connecting sleeve to complete the grinding work. The grinding tool can maintain a reliable connection with the motor assembly during hardness work. After the work is completed, it can be quickly disassembled for cleaning. It is easy to use, safe and reliable.

[0062] 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 grinding tool 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 grinding tool can be easily pulled out.

[0063] 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 extraction of the grinding tool.

[0064] 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.

[0065] 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. A grinding tool comprising a grinding external tooth and a connecting end provided on the bottom surface of the grinding external tooth, wherein the grinding external tooth has a conical shape, 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. The upper end of the grinding external tooth is provided with a rotating shaft, and the upper end of the rotating shaft is provided with a threaded fixing part. A plurality of scrapers are provided around the connecting end, and the scrapers are rectangular.

2. The grinding tool according to claim 1, characterized in that The connecting end is a connecting shaft, and the spiral rib is arranged on the lower end of the outer circumferential surface of the connecting shaft.

3. A grinding device, comprising a main machine and a grinding assembly arranged on the main machine, wherein a motor assembly is provided in the main machine, the grinding assembly comprises a feed cylinder, a discharge cylinder and a grinding tool, the discharge cylinder is arranged on the main machine, the feed cylinder is arranged on the discharge cylinder, and the grinding tool is arranged in the discharge cylinder, characterized in that: The grinding tool adopts the grinding tool 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 grinding 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 grinding 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 grinding device according to claim 3, characterized in that A first gap is provided between the end surface of the first end of the connecting sleeve and the root of the spiral rib.

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