Bean bin sealing structure of bean grinding system of coffee machine
By using a flexible corrugated connecting sleeve and adjusting wheel structure in the coffee machine grinding system, the problems of poor sealing and noise were solved, achieving a stable sealing effect and reducing noise.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG JIAHAOMEI ELECTRIC CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-12
AI Technical Summary
The existing coffee machine grinding system has a poor sealing structure, which allows dust to enter the machine and causes noise problems. In addition, the silicone seal is prone to falling off.
An elastically pleated connecting sleeve is fitted between the bean hopper and the grinding mechanism to achieve an elastic seal and absorb vibration. The stability of the connecting sleeve is maintained by an adjustable wheel structure to prevent it from falling off.
It achieves an effective seal for the coffee machine, reducing the risk of dust entering the machine body and operating noise, and ensuring that the connecting sleeve does not fall off when adjusting the blade distance.
Smart Images

Figure CN224219925U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coffee machines, and in particular to a sealing structure for the bean hopper of a coffee machine grinding system. Background Technology
[0002] The existing coffee machine grinding system's bean hopper sealing structure mainly adopts the following two solutions:
[0003] Plastic part stop sealing structure: There is a problem that the design gap is difficult to balance. If the gap is too large, the sealing effect will be poor and dust will enter the machine body; if the gap is too small, the plastic parts will collide due to vibration and generate noise.
[0004] Silicone sealing structure: The sealing effect is unstable and it is easy to fall off. Utility Model Content
[0005] The purpose of this invention is to provide a sealing structure for the bean hopper of a coffee machine grinding system to solve the above-mentioned problems.
[0006] According to one aspect of this utility model, a bean hopper sealing structure for a coffee machine grinding system is provided, comprising, from top to bottom: a bean hopper, a connecting sleeve, and a grinding mechanism. The grinding mechanism includes a grinding support, a lower blade, and an upper blade. The grinding support is fixed inside the coffee machine, the lower blade is rotatably mounted on the grinding support, and the upper blade is vertically mounted on the lower blade. The lower end of the connecting sleeve is fitted onto the grinding mechanism, the upper part of the connecting sleeve has elastic pleats, and the upper end of the connecting sleeve abuts against the bean inlet of the bean hopper. The connecting sleeve connects the bean hopper and the grinding mechanism.
[0007] In some embodiments, a motor is provided on one side of the grinding stand, and the motor drives the lower blade to rotate via a gear set.
[0008] In some embodiments, the upper part of the grinding stand is provided with a lifting mechanism, the lifting mechanism including an outer adjusting wheel rotatably mounted on the grinding stand, a plurality of limiting plates for limiting the position of the outer adjusting wheel provided on the upper edge of the grinding stand, an inner adjusting wheel rotatably connected to the inner side of the outer adjusting wheel, a threaded structure corresponding to the outer adjusting wheel and the inner adjusting wheel, a plurality of guide blocks provided on the bottom of the inner adjusting wheel in the vertical direction, a guide groove provided on the grinding stand corresponding to the guide blocks, and an upper blade plate fixed in the middle of the inner adjusting wheel. The distance between the upper blade plate and the lower blade plate is adjusted by rotating the outer adjusting wheel to raise and lower the upper blade plate.
[0009] In some embodiments, a mounting plate is provided on the upper part of the inner adjusting wheel, and a slot is provided on the bottom of the connecting sleeve corresponding to the mounting plate. The connecting sleeve is fitted onto the mounting plate of the inner adjusting wheel through the slot.
[0010] In some embodiments, the connecting sleeve is made of rubber or silicone.
[0011] Compared with the prior art, the beneficial effects of this application are as follows:
[0012] This application achieves elastic sealing and absorbs vibration by fitting an elastic pleated connecting sleeve between the bean hopper and the grinding mechanism, thereby reducing working noise. When adjusting the distance between the upper and lower blades, the connecting sleeve remains connected between the bean hopper and the grinding mechanism and will not fall off. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0014] Figure 2 This is a schematic diagram of the connecting sleeve of this utility model;
[0015] Figure 3 This is a schematic diagram of the grinding mechanism of this utility model;
[0016] Figure 4 for Figure 3 A schematic diagram of the structure after the outer adjustment wheel is hidden;
[0017] Figure 5 This is a schematic diagram of the connection structure between the upper and lower cutter discs of this utility model. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] refer to Figures 1 to 5 This application provides a bean hopper sealing structure for a coffee machine grinding system, which includes, from top to bottom: a bean hopper 1, a connecting sleeve 2, and a grinding mechanism 3. The grinding mechanism 3 includes a grinding support 4, a lower blade 5, and an upper blade 6. The grinding support 4 is fixed inside the coffee machine, the lower blade 5 is rotatably mounted on the grinding support 4, and the upper blade 6 is raised and lowered on the lower blade 5. The lower end of the connecting sleeve 2 is fitted onto the grinding mechanism 3, and the upper part of the connecting sleeve 2 has elastic folds 7. The upper end of the connecting sleeve 2 abuts against the bean inlet of the bean hopper 1, and the connecting sleeve 2 connects the bean hopper 1 and the grinding mechanism 3.
[0020] In some embodiments, a motor is provided on one side of the grinding stand 4. The motor drives the lower blade 5 to rotate through a gear set. When the lower blade 5 rotates, it cooperates with the upper blade 6 to grind the coffee beans between them.
[0021] In some embodiments, a lifting mechanism is provided on the upper part of the grinding stand 4. The lifting mechanism includes an outer adjusting wheel 8 rotatably mounted on the grinding stand 4. Multiple limiting plates 9 are provided on the upper edge of the grinding stand 4 to limit the position of the outer adjusting wheel 8. An inner adjusting wheel 10 is rotatably connected to the inner side of the outer adjusting wheel 8. A threaded structure 11 is provided between the outer adjusting wheel 8 and the inner adjusting wheel 10. Multiple guide blocks 12 are provided vertically at the bottom of the inner adjusting wheel 10. A guide groove 13 is provided on the grinding stand 4 corresponding to the guide blocks 12. The upper blade 6 is fixed. Located in the middle of the inner adjusting wheel 10, the upper cutter disc 6 is raised and lowered by rotating the outer adjusting wheel 8, thereby adjusting the distance between the upper cutter disc 6 and the lower cutter disc 5. When rotating the outer adjusting wheel 8, the outer adjusting wheel 8 will only rotate along its axis. The inner adjusting wheel 10 is raised or lowered by the threaded structure 11, thereby adjusting the distance between the upper cutter disc 6 and the lower cutter disc 5, that is, adjusting the size of the coffee powder particles. The limiting plate 9 can prevent the outer adjusting wheel 8 from falling off or shifting. The cooperation between the guide block 12 and the guide groove 13 ensures that the inner adjusting wheel 10 always moves in the vertical direction.
[0022] In some embodiments, a mounting plate 14 is provided on the upper part of the inner adjusting wheel 10, and a slot 15 is provided on the bottom of the connecting sleeve 2 corresponding to the mounting plate 14. The connecting sleeve 2 is fitted onto the mounting plate 14 of the inner adjusting wheel 10 through the slot 15 to form a reliable seal, preventing dust from entering the machine body and preventing the connecting sleeve 2 from falling off.
[0023] In some implementations, the connecting sleeve 2 is made of rubber or silicone.
[0024] This application achieves elastic sealing and absorbs vibration by fitting a connecting sleeve 2 with elastic pleats 7 between the bean hopper 1 and the grinding mechanism 3, thereby reducing working noise. When adjusting the distance between the upper blade 6 and the lower blade 5, the connecting sleeve 2 is always connected between the bean hopper 1 and the grinding mechanism 3 and will not fall off.
[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A sealing structure for the bean hopper of a coffee machine grinding system, characterized in that, From top to bottom, the coffee machine includes: a bean hopper, a connecting sleeve, and a grinding mechanism. The grinding mechanism includes a grinding support, a lower blade, and an upper blade. The grinding support is fixed inside the coffee machine. The lower blade is rotatably mounted on the grinding support. The upper blade is raised and lowered on the lower blade. The lower end of the connecting sleeve is fitted onto the grinding mechanism. The upper part of the connecting sleeve has elastic pleats. The upper end of the connecting sleeve abuts against the bean inlet of the bean hopper. The connecting sleeve connects the bean hopper and the grinding mechanism.
2. The coffee bean hopper sealing structure of the coffee machine grinding system according to claim 1, characterized in that, A motor is installed on one side of the grinding stand, and the motor drives the lower blade to rotate through a gear set.
3. The coffee bean hopper sealing structure of the coffee machine grinding system according to claim 1, characterized in that, The upper part of the grinding stand is provided with a lifting mechanism, which includes an outer adjusting wheel rotatably mounted on the grinding stand. The upper edge of the grinding stand is provided with multiple limiting plates for limiting the position of the outer adjusting wheel. An inner adjusting wheel is rotatably connected to the inner side of the outer adjusting wheel. A threaded structure is provided between the outer adjusting wheel and the inner adjusting wheel. Multiple guide blocks are provided at the bottom of the inner adjusting wheel in the vertical direction. The grinding stand is provided with guide grooves corresponding to the guide blocks. The upper blade is fixed in the middle of the inner adjusting wheel. The distance between the upper blade and the lower blade is adjusted by rotating the outer adjusting wheel to raise and lower the upper blade.
4. The coffee bean hopper sealing structure of the coffee machine grinding system according to claim 3, characterized in that, The upper part of the inner adjusting wheel is provided with a hanging platform, and the bottom of the connecting sleeve is provided with a slot corresponding to the hanging platform. The connecting sleeve is fitted onto the hanging platform of the inner adjusting wheel through the slot.
5. The coffee bean hopper sealing structure of the coffee machine grinding system according to claim 1, characterized in that, The connecting sleeve is made of rubber or silicone.