Self-cooling grinding mechanism of bean grinder

Abstract

The invention relates to the field of grinding equipment, and discloses a self-cooling grinding mechanism of a bean grinder. A water tank is fixedly connected to the outer surface of the water outlet pipe; a connecting pipe is fixedly connected to the lower surface of the water tank; an electromagnetic pump is fixedly connected to the outer surface of the connecting pipe; a water inlet pipe is fixedly connected to the outer surface of the output end of the electromagnetic pump; the outer surface of the water inlet pipe is fixedly connected to the other end of the heat exchange pipe to form circulation, the upper grinding wheel serves as a main part in the grinding period, heat is generated in the grinding period, an inner groove makes full contact with stainless steel of the heat exchange pipe, and cold water is pumped to the water inlet pipe from the water tank through the connecting pipe through the electromagnetic pump. The NTC temperature probe monitors the temperature in real time and is connected with an electronic circuit arranged at the position of the electromagnetic pump to control the working power of the electromagnetic pump and adjust the water flow speed, and then the heat exchange efficiency is adjusted.

Description

Technical Field

[0001] The present application belongs to the technical field of grinding equipment, and specifically relates to a self-cooling grinding mechanism for a coffee bean grinder. Background Art

[0002] As people's living standards improve, they increasingly pursue a quality life, and coffee has gradually become associated with this quality life. Therefore, coffee bean grinders have emerged as an important tool used before brewing coffee. Existing coffee bean grinders are divided into two categories: manual and electric. Electric coffee bean grinders are an innovation based on manual coffee grinders.

[0003] Existing electric coffee grinders use an electric motor to drive the rotating grinding discs or blades, grinding the coffee beans into powder using the pressure between the discs or the cutting action of the blades. Key components include the electric motor, grinding discs or blades, a regulator, a bean hopper, and a powder outlet. The electric motor provides power, the grinding discs or blades perform the grinding, and the regulator adjusts the coarseness of the grind. During operation, coffee beans are fed into the bean hopper, ground by the rotating grinding discs or blades, and discharged through the powder outlet.

[0004] However, the grinding components in the bean grinder generate heat due to friction with the beans during operation. The heat will change the flavor of the ground coffee powder, and the taste of the brewed coffee will be greatly reduced. Summary of the Invention

[0005] The purpose of this application is to provide a self-cooling coffee bean grinder grinding mechanism in order to solve the above-mentioned problems.

[0006] The technical solution adopted in this application is as follows: a self-cooling coffee bean grinder grinding mechanism, comprising an upper grinding wheel, the inner surface of the upper grinding wheel is fixedly connected to a heat exchange tube, the outer surface of the heat exchange tube is fixedly connected to a water outlet pipe, the outer surface of the water outlet pipe is fixedly connected to a water tank, the lower surface of the water tank is fixedly connected to a connecting pipe, the outer surface of the connecting pipe is fixedly connected to an electromagnetic pump, the outer surface of the output end of the electromagnetic pump is fixedly connected to a water inlet pipe, and the outer surface of the water inlet pipe is fixedly connected to the other end of the heat exchange tube to form a circulation.

[0007] By adopting the above technical solution, the upper grinding wheel serves as the main component during grinding, and at least the interior of the upper grinding wheel serves as a metal liner. Heat is generated during grinding, and the inner groove is in full contact with the stainless steel of the heat exchange tube. The cold water is pumped from the water tank through the connecting pipe to the water inlet pipe by the electromagnetic pump. The water flows through the heat exchange tube for heat exchange, and is then discharged from the water outlet pipe at the other end, completing a round of heat exchange cycle and forming a closed circulation water circuit. The temperature is monitored in real time by the NTC temperature probe, and is connected to the electronic circuit set at the electromagnetic pump to control the working power of the electromagnetic pump, adjust the water flow rate, and then adjust the heat exchange efficiency, thereby achieving the effect of controlling the temperature during the working grinding process.

[0008] In a preferred embodiment, an NTC temperature probe is fixedly connected to the outer surface of the upper grinding wheel, and a retaining ring is detachably connected to the inner surface of the upper end of the upper grinding wheel.

[0009] By adopting the above technical solution, after the NTC temperature probe is connected, the resistance of the internal thermistor changes with the temperature change, and the circuit current changes to form a corresponding digital signal, which monitors the grinding temperature in real time. The retaining ring is stuck in the slot above the upper grinding wheel, making it convenient to set a funnel, cloth bag, etc. on it, making it easier to pour coffee beans or prevent materials from jumping out during grinding and causing contamination.

[0010] In a preferred embodiment, the lower surface of the upper grinding wheel is fixedly connected to a lower grinding disc seat, and the lower surface of the lower grinding disc seat is fixedly connected to a gear box.

[0011] By adopting the above technical solutions, the design of the lower burr seat and gearbox combines to provide superior grinding performance and stability for electric coffee grinders. The lower burr seat, adjusted by lifting, allows precise control of the lower grinding wheel's height, thereby adjusting the spacing between the burrs. This design ensures that the coffee beans pass through the burrs with the appropriate pressure every time, resulting in a uniform and fine grind. The reinforced support provided by the seat further ensures the stability of the lower burr wheel during height adjustment, preventing burr shift or error caused by instability or overadjustment. The planetary gearset within the gearbox plays a crucial role in the motor's output. By effectively transmitting torque, it provides higher grinding power, especially for harder beans, ensuring high grinding power and consistent grinding efficiency. The planetary gearset also optimizes output torque by adjusting the gear ratio, ensuring a consistent burr speed and load during operation, reducing jitter caused by overload or excessive resistance.

[0012] In a preferred embodiment, a ball bearing is provided on the lower surface of the lower grinding disc seat corresponding to the lower grinding disc seat, the outer surface of the ball bearing corresponds to the lower grinding disc seat and is fixed to the gear box, and the inner ring of the ball bearing is fixed to the output end of the gear box.

[0013] By adopting the above technical solution, the ball bearing plays a critical role in the electric coffee bean grinder. It not only ensures a stable connection between the lower grinding disc seat and the gearbox, but also provides smooth rotation support. By fixing the inner ring at the output end of the gearbox, the ball bearing enables the inner ring to operate at a stable speed, reducing friction and wear, and increasing the service life of the equipment. Its outer surface is tightly clamped to the lower grinding disc seat, ensuring structural stability, preventing vibration or displacement problems at high speeds, and avoiding the generation of noise. In addition, the ball bearing can effectively support the vertical output of the grinding disc and maintain the precise positioning of the grinding disc during operation, thereby ensuring the uniformity and consistency of the grinding effect.

[0014] In a preferred embodiment, a motor is provided on the lower surface of the gear box, the gear box housing is welded to the motor housing, and the motor output end is connected to the gear box input end.

[0015] By adopting the above technical solution, the motor, as the core driving component of the electric coffee grinder, provides vital mechanical power for the entire grinding system. The motor's power directly affects the grinder's operating efficiency, grinding accuracy, and adaptability to hard materials. A stronger motor also provides higher grinding precision, resulting in a more uniform powder during the grinding process and improving the grinding quality. Conversely, if you are working with softer materials or have lower grinding speed requirements, you can choose a lower-power motor.

[0016] In a preferred embodiment, an outer ring is provided on the outer surface of the lower end of the gear box, and an adjustment seat is welded on the upper surface of the gear box.

[0017] Using this technical solution, the adjustment seat is welded to the upper surface of the gearbox. Its primary purpose is to provide a fixed adjustment platform for facilitating the installation of the adjustment screw. The adjustment seat incorporates a suitable threaded groove that allows the adjustment screw to be screwed in, thereby varying the height of the protrusion above the screw and achieving height adjustment. The design of the adjustment seat must ensure that it can withstand the forces generated during the adjustment process while maintaining long-term stability. The welding position and structure of the adjustment seat must be precise to ensure that the threaded groove does not wear or deform when the adjustment screw is screwed in, thereby ensuring adjustment accuracy and long-term equipment availability.

[0018] In a preferred embodiment, a screw is movably connected to the inner surface of the adjustment seat, and a reinforcement seat is provided on the outer surface of the lower grinding disc seat corresponding to the screw.

[0019] By adopting the above technical solution, the reinforcement seat is installed on the lower grinding wheel seat, directly contacting the outer surface of the screw. Its main function is to enhance the strength and stability of the screw connection area, preventing damage or deformation caused by excessive stress in the screw connection during adjustment. Through the cooperation of the screw and the reinforcement seat, the user can precisely adjust the position of the lower grinding wheel 22, and thus the gap between the tapered shape of the lower grinding wheel and the upper grinding wheel can be adjusted as needed.

[0020] In a preferred embodiment, the middle inner surface of the lower grinding disc seat is movably connected to a support sleeve, and the outer surface of the gear box output end is welded with a screw rod, and the outer surface of the screw rod passes through the support sleeve and is rotatably connected.

[0021] By adopting the above technical solution, the support sleeve ensures the stability of the grinding end of the equipment during adjustment, and the screw rod transmits the rotation output of the motor and the adjustment seat to the lower grinding wheel.

[0022] In a preferred embodiment, a dustproof pad is movably sleeved on the outer surface of the upper end of the lower grinding disc seat, and a gasket is provided on the outer surface of the upper end of the supporting sleeve.

[0023] With this technical solution, the gasket, located beneath the lower grinding wheel, primarily supports and stabilizes the wheel, reducing vibration and pressure to ensure smooth system operation. Made of wear-resistant and high-temperature-resistant materials, it effectively reduces wear and extends equipment life. A dustproof pad is installed around the lower grinding wheel to prevent dust and particles from entering the system, protecting key components such as the shaft and reducing friction and wear. Dustproof pads are typically made of highly sealing, high-temperature-resistant materials, ensuring excellent dust protection even under high-load conditions. These designs not only enhance equipment stability but also improve work efficiency and safety.

[0024] In a preferred embodiment, the outer surface of the upper end of the screw rod is movably connected to the lower grinding wheel, the upper surface of the lower grinding wheel is movably connected to the spring washer, and the outer surface of the upper end of the screw rod is detachably connected to the hexagonal nut that passes through the lower grinding wheel and the spring washer.

[0025] By adopting the above technical solution, the lower part of the lower grinding wheel is supported by the lower grinding disc seat and the reinforcement seat, and the upper part is connected to form a whole through the hexagonal nut thread groove to prevent the lower grinding wheel from falling off. The elastic deformation of the spring washer increases the force, avoiding the problem of uneven grinding due to loosening, and ensuring the grinding effect.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are: First, the upper grinding wheel is the main component during grinding. At least the inner part of the upper grinding wheel is a metal liner. During grinding, heat is generated. The inner groove is in full contact with the stainless steel of the heat exchange tube. The electromagnetic pump pumps cold water from the water tank through the connecting pipe to the water inlet pipe. The water flows through the heat exchange tube for heat exchange and is then discharged from the other end through the water outlet pipe, completing a round of heat exchange cycle and forming a closed loop water circuit. The temperature is monitored in real time by the NTC temperature probe, which is connected to the electronic circuit set at the electromagnetic pump to control the working power of the electromagnetic pump, adjust the water flow rate, and then adjust the heat exchange efficiency, so as to achieve the effect of controlling the temperature during the working grinding process; Second, through the synergistic effect of the adjustment seat and the screw, when the user rotates the screw, its threads engage with the thread groove of the adjustment seat, adjusting the height of the screw protrusion, thereby fixing the support and driving the lower grinding wheel seat to lift or lower in the vertical direction, thereby changing the gap between the lower and upper grinding wheels. Due to the conical design of the lower grinding wheel, slight height changes can significantly affect the spatial distribution of the grinding area, thereby precisely adjusting the particle size of the coffee powder. To ensure the stability of adjustment, the reinforcement seat is embedded in the slot of the lower grinding wheel seat. The multi-point support structure offsets the radial force generated during the grinding process and prevents the gap from shifting due to vibration. At the same time, the combination of spring washers and hexagonal nuts uses elastic deformation to provide uniform preload, ensuring that the lower grinding wheel remains fixed in place even at high speeds, avoiding uneven grinding due to loosening. This adjustment mechanism not only simplifies user operation, allowing for coarse and fine adjustments by simply turning the screw, but also accommodates a variety of grinding needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the front appearance of the device in this application; Figure 2 This is a top view of the side appearance of the device in this application; Figure 3 This is a top view of the device in this application; Figure 4 This is a schematic diagram of the side appearance of the device in this application; Figure 5 This is a bottom view of the back of the device in this application; Figure 6 This is an exploded view of the equipment components in this application.

[0028] Markings in the figure: 1. Upper grinding wheel; 2. Heat exchange tube; 3. Water inlet pipe; 4. Water outlet pipe; 5. Connecting pipe; 6. Water tank; 7. Electromagnetic pump; 8. NTC temperature probe; 9. Snap ring; 10. Lower grinding disc seat; 11. Gear box; 12. Ball bearing; 13. Motor; 14. External ring; 15. Adjustment seat; 16. Screw; 17. Reinforcement seat; 18. Support sleeve; 19. Screw rod; 20. Gasket; 21. Dustproof pad; 22. Lower grinding wheel; 23. Spring washer; 24. Hexagonal nut. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] Example: Reference Figure 1-6 A self-cooling coffee bean grinder grinding mechanism includes an upper grinding wheel 1, the inner surface of the upper grinding wheel 1 is fixedly connected to a heat exchange tube 2, the outer surface of the heat exchange tube 2 is fixedly connected to a water outlet pipe 4, the outer surface of the water outlet pipe 4 is fixedly connected to a water tank 6, the lower surface of the water tank 6 is fixedly connected to a connecting pipe 5, the outer surface of the connecting pipe 5 is fixedly connected to an electromagnetic pump 7, the outer surface of the output end of the electromagnetic pump 7 is fixedly connected to a water inlet pipe 3, and the outer surface of the water inlet pipe 3 is fixedly connected to the other end of the heat exchange tube 2 to form a circulation.

[0031] The upper grinding wheel 1 is the main component during grinding. At least the interior of the upper grinding wheel 1 serves as a metal liner. Heat is generated during grinding. The inner groove is in full contact with the stainless steel of the heat exchange tube 2. The cold water is pumped from the water tank 6 to the water inlet pipe 3 through the electromagnetic pump 7 through the connecting pipe 5. The water flows through the heat exchange tube 2 for heat exchange and is then discharged from the water outlet pipe 4 at the other end, completing a round of heat exchange cycle to form a closed circulation water circuit. The temperature is monitored in real time by the NTC temperature probe 8, and is connected to the electronic circuit set at the electromagnetic pump 7 to control the working power of the electromagnetic pump 7, adjust the water flow rate, and then adjust the heat exchange efficiency, thereby achieving the effect of controlling the temperature during the working grinding process.

[0032] Reference Figure 1-6 The outer surface of the upper grinding wheel 1 is fixedly connected with an NTC temperature probe 8, and the inner surface of the upper end of the upper grinding wheel 1 is detachably connected with a clamping ring 9.

[0033] After the NTC temperature probe 8 is connected, the resistance of the internal thermistor changes with the temperature change, and the circuit current changes to form a corresponding digital signal, which monitors the grinding temperature in real time. The clamping ring 9 is clamped in the groove above the upper grinding wheel 1, which makes it convenient to set a funnel, cloth bag, etc. on the top to facilitate the pouring of coffee beans or prevent materials from jumping out and causing pollution during grinding.

[0034] Reference Figure 1-6 The lower surface of the upper grinding wheel 1 is fixedly connected to the lower grinding disc seat 10, and the lower surface of the lower grinding disc seat 10 is fixedly connected to the gear box 11.

[0035] The coordinated design of the lower grinding wheel seat 10 and the gearbox 11 provides the electric coffee grinder with superior grinding performance and stability. The lower grinding wheel seat 10 can be adjusted by lifting, allowing the height of the lower grinding wheel 22 to be precisely controlled, thereby adjusting the spacing between the grinding wheels. This design ensures that the coffee beans pass through the grinding wheels with appropriate pressure during each grinding, resulting in a uniform and fine grind. The support provided by the reinforced seat 17 further ensures the stability of the lower grinding wheel 22 during height adjustment, preventing grinding wheel offset or error caused by instability or overadjustment. The planetary gear set within the gearbox 11 plays a crucial role in the output of the motor 13. By effectively transmitting torque, it provides higher grinding power, maintaining strong working capacity, especially for harder coffee beans, and ensuring efficient and consistent grinding. The planetary gear set also optimizes output torque by adjusting the gear ratio, ensuring that the grinding wheels maintain a stable speed and load during operation, reducing jamming caused by overload or excessive resistance.

[0036] Reference Figure 1-6 The lower surface of the lower grinding disc seat 10 corresponds to the lower grinding disc seat 10 and is provided with a ball bearing 12. The outer surface of the ball bearing 12 corresponds to the lower grinding disc seat 10 and is fixed to the gear box 11. The inner ring of the ball bearing 12 is fixed to the output end of the gear box 11.

[0037] The role of the ball bearing 12 in the electric coffee bean grinder is very critical. It not only ensures a stable connection between the lower grinding disc seat 10 and the gear box 11, but also provides smooth rotation support. By fixing the inner ring at the output end of the gear box 11, the ball bearing 12 enables the inner ring to run at a stable speed, reducing friction and wear, and increasing the service life of the equipment. Its outer surface is tightly clamped to the lower grinding disc seat 10, ensuring the stability of the structure, preventing vibration or displacement problems at high speeds, and avoiding the generation of noise. In addition, the ball bearing 12 can effectively support the vertical output of the grinding disc and maintain the precise positioning of the grinding disc during operation, thereby ensuring the uniformity and consistency of the grinding effect.

[0038] Reference Figure 1-6 A motor 13 is provided on the lower surface of the gear box 11 , the outer shell of the gear box 11 is welded to the outer shell of the motor 13 , and the output end of the motor 13 is connected to the input end of the gear box 11 .

[0039] As the core drive component of the electric coffee grinder, motor 13 provides crucial mechanical power for the entire grinding system. The motor's power directly impacts the grinder's operating efficiency, grinding accuracy, and adaptability to hard materials. A stronger motor also provides higher grinding accuracy, resulting in a more uniform powder during the grinding process and improved grinding quality. Conversely, if you're working with softer materials or don't require high grinding speed, a lower-power motor can be used.

[0040] Reference Figure 1-6 An external ring 14 is provided on the outer surface of the lower end of the gear box 11, and an adjustment seat 15 is welded on the upper surface of the gear box 11.

[0041] Adjustment seat 15 is welded to the upper surface of gearbox 11. Its primary purpose is to provide a fixed adjustment platform for facilitating the installation of adjustment screw 16. Adjustment seat 15 incorporates a suitable threaded groove, allowing the adjustment screw 16 to be screwed in, thereby varying the height of the protrusion above the screw and achieving height adjustment. The design of the adjustment seat must ensure that it can withstand the forces generated during adjustment while maintaining long-term stability. The welding position and structure of adjustment seat 15 must be precise to ensure that the threaded groove does not wear or deform when the adjustment screw 16 is screwed in, thereby ensuring adjustment accuracy and long-term equipment availability.

[0042] Reference Figure 1-6 The inner surface of the adjustment seat 15 is movably connected with a screw 16 , and the outer surface of the lower grinding disc seat 10 corresponding to the screw 16 is provided with a reinforcement seat 17 .

[0043] The reinforcement seat 17 is mounted on the lower grinding wheel base 10 and directly engages the outer surface of the screw 16. Its primary function is to enhance the strength and stability of the screw connection area, preventing damage or deformation caused by excessive stress during adjustment. Through the cooperation of the screw 16 and the reinforcement seat 17, the user can precisely adjust the position of the lower grinding wheel 22, and thus the gap between the tapered shape of the lower grinding wheel 22 and the upper grinding wheel 1 can be adjusted as needed.

[0044] The corresponding reinforcement seat 17 is snapped into the lower grinding wheel 22 for support. The lower grinding wheel 22 is conical, so the gap between it and the lower part of the upper grinding wheel 1 can be adjusted. Furthermore, the size of the grinding particles can be adjusted.

[0045] Reference Figure 1-6 The middle inner surface of the lower grinding wheel seat 10 is movably connected with a support sleeve 18, and the outer surface of the output end of the gear box 11 is welded with a screw rod 19, and the outer surface of the screw rod 19 passes through the support sleeve 18 and is rotatably connected.

[0046] The support sleeve 18 ensures the stability of the grinding end of the equipment during adjustment, and the screw rod 19 rotates the motor 13 and the adjustment seat 15 to output the transmission to the lower grinding wheel 22.

[0047] Reference Figure 1-6 A dustproof pad 21 is movably sleeved on the outer surface of the upper end of the lower grinding disc seat 10, and a gasket 20 is provided on the outer surface of the upper end of the supporting sleeve 18.

[0048] The gasket 20 is located below the lower grinding wheel 22. Its main function is to support and stabilize the lower grinding wheel 22, reduce vibration and pressure, and ensure the smooth operation of the system. It is made of wear-resistant and high-temperature resistant materials, effectively reducing wear and extending the life of the equipment. The dustproof pad 21 is installed around the lower grinding wheel to prevent dust and particles from entering the system, protect key components such as the rotating shaft, and reduce friction and wear. The dustproof pad is usually made of highly sealed and high-temperature resistant materials, and can maintain a good dustproof effect under high-load environments. Through these designs, the gasket and dustproof pad not only improve the stability of the equipment, but also improve work efficiency and safety.

[0049] Reference Figure 1-6 The outer surface of the upper end of the screw rod 19 is movably connected to the lower grinding wheel 22, and the upper surface of the lower grinding wheel 22 is movably connected to the spring washer 23. The outer surface of the upper end of the screw rod 19 passes through the lower grinding wheel 22 and the spring washer 23 and is detachably connected to the hexagonal nut 24.

[0050] The lower grinding wheel 22 is supported by the lower grinding disc seat 10 and the reinforcement seat 17 at the bottom, and is connected to the upper part by the threaded groove of the hexagonal nut 24 to form a whole, preventing the lower grinding wheel 22 from falling off. The elastic deformation of the spring washer 23 increases the force, avoids the problem of uneven grinding due to loosening, and ensures the grinding effect.

[0051] The implementation principle of the self-cooling coffee bean grinder grinding mechanism embodiment of the present application is as follows: The grinder provides mechanical power for grinding through the motor 13. The torque is increased through the planetary gear set inside the gear box 11. After output, it is supported by the screw rod 19. The lower grinding wheel 22 is supported by the lower grinding disc seat 10 and the reinforcement seat 17. The gasket 20 assists in stability. The upper part is connected to form a whole through the hexagonal nut 24 thread groove to prevent the lower grinding wheel 22 from falling off. The elastic deformation of the spring washer 23 increases the force to ensure the fixing effect. Then the lower grinding wheel 22 rotates to grind in the vertical inner groove corresponding to the upper grinding wheel 1. The dustproof pad 21 prevents external dust from entering, causing the friction of the shaft to increase and affecting performance. The ball bearing 12 ensures external fixation and the stability of the vertical output support at the center position. The screw 16 rotates in the thread groove at the adjustment seat 15 to adjust the height of the protrusion. The lower grinding wheel seat 10 is lifted up, and the corresponding reinforcement seat 17 supports the lower grinding wheel 22 to adjust the height. The lower grinding wheel 22 is conical, so the gap with the lower part of the upper grinding wheel 1 can be adjusted. Furthermore, the size of the grinding particles is adjusted. During grinding, at least the interior of the upper grinding wheel 1 serves as a metal liner, and the inner groove is in full contact with the stainless steel of the heat exchange tube 2. The cold water is pumped from the water tank 6 to the water inlet pipe 3 through the electromagnetic pump 7 through the connecting pipe 5. The water flows through the heat exchange tube 2 for heat exchange, and then is discharged from the other end through the water outlet pipe 4 to complete a round of heat exchange cycle, forming a closed circulation water circuit. The temperature is monitored in real time by the NTC temperature probe 8, and is connected to the electronic circuit set at the electromagnetic pump 7 to control the working power of the electromagnetic pump 7, adjust the water flow rate, and then adjust the heat exchange efficiency, thereby achieving the effect of controlling the temperature during the working grinding process.

[0052] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A self-cooling coffee bean grinder grinding mechanism, comprising an upper grinding wheel (1), characterized in that: The inner surface of the upper grinding wheel (1) is fixedly connected to a heat exchange tube (2), the outer surface of the heat exchange tube (2) is fixedly connected to a water outlet tube (4), the outer surface of the water outlet tube (4) is fixedly connected to a water tank (6), the lower surface of the water tank (6) is fixedly connected to a connecting tube (5), the outer surface of the connecting tube (5) is fixedly connected to an electromagnetic pump (7), the outer surface of the output end of the electromagnetic pump (7) is fixedly connected to a water inlet tube (3), and the outer surface of the water inlet tube (3) is fixedly connected to the other end of the heat exchange tube (2) to form a circulation.

2. The self-cooling coffee bean grinder grinding mechanism according to claim 1, characterized in that: An NTC temperature probe (8) is fixedly connected to the outer surface of the upper grinding wheel (1), and a clamping ring (9) is detachably connected to the inner surface of the upper end of the upper grinding wheel (1).

3. The self-cooling coffee bean grinder grinding mechanism according to claim 1, characterized in that: The lower surface of the upper grinding wheel (1) is fixedly connected to a lower grinding disc seat (10), and the lower surface of the lower grinding disc seat (10) is fixedly connected to a gear box (11).

4. The self-cooling coffee bean grinder grinding mechanism according to claim 3, characterized in that: A ball bearing (12) is provided on the lower surface of the lower grinding disc seat (10) corresponding to the lower grinding disc seat (10), an outer surface of the ball bearing (12) corresponds to the lower grinding disc seat (10) and is fixed to the gear box (11), and an inner ring of the ball bearing (12) is fixed to the output end of the gear box (11).

5. The self-cooling grinding mechanism of a coffee bean grinder according to claim 3, characterized in that: A motor (13) is provided on the lower surface of the gear box (11), the housing of the gear box (11) and the housing of the motor (13) are welded, and the output end of the motor (13) is connected to the input end of the gear box (11).

6. The self-cooling coffee bean grinder grinding mechanism according to claim 3, characterized in that: An external connecting ring (14) is provided on the outer surface of the lower end of the gear box (11), and an adjusting seat (15) is welded on the upper surface of the gear box (11).

7. The self-cooling coffee bean grinder grinding mechanism of claim 6, wherein: The inner surface of the adjustment seat (15) is movably connected with a screw (16), and the outer surface of the lower grinding disc seat (10) corresponding to the screw (16) is provided with a reinforcement seat (17).

8. The self-cooling coffee bean grinder grinding mechanism of claim 3, wherein: The middle inner surface of the lower grinding disc seat (10) is movably connected to a support sleeve (18), and the outer surface of the output end of the gear box (11) is welded with a screw rod (19), and the outer surface of the screw rod (19) passes through the support sleeve (18) and is rotatably connected.

9. The self-cooling coffee bean grinder grinding mechanism of claim 3, wherein: A dustproof pad (21) is movably sleeved on the outer surface of the upper end of the lower grinding disc seat (10), and a gasket (20) is provided on the outer surface of the upper end of the supporting sleeve (18).

10. The self-cooling coffee bean grinder grinding mechanism of claim 8, wherein: The outer surface of the upper end of the screw rod (19) is movably sleeved with a lower grinding wheel (22), the upper surface of the lower grinding wheel (22) is movably connected with a spring washer (23), and the outer surface of the upper end of the screw rod (19) penetrates the lower grinding wheel (22) and the spring washer (23) and is detachably connected with a hexagonal nut (24).

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