A cleanable and easy-to-clean food crusher and its usage method

Abstract

The present invention discloses a clean and easily cleanable food crusher, which comprises a base, a cup body, a rotating frame, a silica gel ring, a cup cover and a protective cover; the cup body is installed inside the base, and the cup cover is installed at the top end of the cup body; the base comprises a machine base, a motor is arranged in the middle of the machine base, and the motor is connected with a transmission shaft; the protective cover comprises a cover top and a rotating frame top cover, and the rotating frame top cover is arranged at the center of the bottom of the cover top; the protective cover is installed at the top end of the machine base and locked by a quick locking device. In the present invention, there are no structural dead corners in the space directly contacting the food, and the components directly contacting the food are all detachable and dead corner-free structures, which are easy to be thoroughly cleaned. The interior of the base and the protective cover that do not directly contact the food can be directly cleaned.

Description

Technical Field

[0001] The present invention relates to a food crusher, and particularly to a clean and easy-to-clean food crusher and its usage method. Background Art

[0002] A food crusher is a processing device that crushes food by means of a high-speed rotating blade, and can be widely used for the crushing of ingredients such as grains, nuts, fruits, and vegetables to improve the taste of food and facilitate food digestion and nutrient absorption. In the prior art, there are various types of crushers, such as wall breakers and cooking machines, for food crushing, and these crushers meet the living needs of people in terms of food crushing effect.

[0003] However, for existing food crushers, such as wall breakers, the blade is located at the bottom of the cup body, and there are structural dead corners between the blade and the cup body, which are not easy to clean. Food residues are likely to accumulate and breed mold after long-term use. To address these problems, self-cleaning crushers have been developed, that is, clean water is introduced into the cup body, and the high-speed rotation of the blade or the ultrasonic generating device generates ultrasonic waves to achieve the purpose of cleaning. However, this method still cannot thoroughly clean, and the sealing material between the blade shaft and the cup body base will cause wear and aging under the action of high-speed friction, thereby releasing microparticles to contaminate food. For another common type of handheld cooking machine, although its blade is inserted into the cup body from the top of the cup body and is detachable, some models have a supporting structure at the bottom of the cup body, which will also result in structural dead corners, and there is a lack of isolation structure at the top of its cup body, and external foreign matters (especially microparticles generated by high-speed friction between the shaft and the frame) are easily introduced into the cup body to contaminate food.

[0004] In summary, the currently known technical solutions for food crushers do not fundamentally avoid the structural dead corners in the internal space where the crusher contacts food and the use of sealing materials, nor achieve the isolation of the internal and external spaces of the crusher. Therefore, the problems of being not easy to clean and food being easily contaminated still exist. Although Patent 202110972267.7 realizes the isolation of the internal and external spaces and is easy to clean, its structure is very complex, the usage process is cumbersome, and its safety is not high. With the development of society and the improvement of people's living standards, people pay more and more attention to food safety issues. Therefore, solving the problems of existing food crushers having structural dead corners, being not easy to clean, and food being easily contaminated has important practical significance for ensuring food safety and improving people's quality of life. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a clean and easy-to-clean food crusher with a simple structure and convenient cleaning, and provides its usage method.

[0006] The technical solution of the present invention to solve the above problems is: a clean and easy-to-clean food crusher, comprising a base, a cup body, a rotating frame, a silicone ring, a cup cover and a protective cover; the cup body is installed inside the base, and the cup cover is installed at the top of the cup body; the base includes a machine base, a motor is provided in the middle of the machine base, and the motor is connected to a transmission shaft; the protective cover includes a cover top and a rotating frame top cover, and a rotating frame top cover is provided at the center of the bottom of the cover top; the protective cover is installed at the top of the machine base and locked by a quick locking device;

[0007] The rotating frame is in an umbrella shape, including a central shaft, multiple L-shaped skeletons, multiple annular ribs and multiple blades. The bottom end of the central shaft is installed at the top end of the transmission shaft, and the bottom end of the rotating frame top cover presses against the top end of the central shaft; multiple uniformly distributed axial grooves are provided at both ends of the central shaft, multiple uniformly distributed first protrusions are provided at the top end of the transmission shaft, and multiple uniformly distributed second protrusions are provided at the bottom end of the rotating frame top cover. The multiple second protrusions and the first protrusions are respectively embedded in the corresponding axial grooves at the upper and lower ends of the central shaft; the upper end of each skeleton is fixed at an equal height on the side wall of the central shaft and is distributed in a ring shape, and the annular ribs connect all the skeletons into a whole in the horizontal direction, and a blade is provided at the bottom of each skeleton;

[0008] The cup body is a double-layer cylindrical structure with an open top, including an inner cup body, an outer cup body and an annular cup bottom connecting the inner cup body and the outer cup body. A first annular groove is provided at the upper end of the inner cup body, and the skeletons and blades are placed in the annular cavity between the inner cup body and the outer cup body; the cup cover is a double-layer cylindrical structure with an open bottom, including an inner cup cover, an outer cup cover and an annular cup top connecting the inner cup cover and the outer cup cover. A second annular groove is provided at the lower end of the inner cup cover; a third annular groove is provided at each of the upper and lower ends of the central shaft, and a silicone ring is installed in each of the two third annular grooves. The silicone ring at the upper end is nested with the second annular groove of the cup cover to form an annular labyrinth cavity, and the silicone ring at the lower end is nested with the first annular groove of the cup body to form an annular labyrinth cavity; all the parts where the skeletons are connected to the side wall of the central shaft are located between the two silicone rings.

[0009] For the above-mentioned clean and easy-to-clean food crusher, a groove is provided on the bottom surface inside the machine base of the base, and a second protrusion is provided at the bottom of the cup body. The second protrusion is snapped into the groove on the bottom surface inside the machine base.

[0010] For the above-mentioned clean and easy-to-clean food crusher, the base further includes an inner cylinder of the base and an end cover of the inner cylinder of the base; the motor is installed at the center of the bottom inner wall of the machine base. The inner cylinder of the base covers the motor and is installed at the bottom of the machine base. An end cover of the inner cylinder of the base is provided at the top of the inner cylinder of the base; the lower end of the transmission shaft is installed on the first annular tubular protrusion at the upper end of the motor through a first bearing, and the top end of the output shaft of the motor is connected to the lower end of the transmission shaft; a second bearing is provided between the upper end of the transmission shaft and the inner cylinder of the base, and the end cover of the inner cylinder of the base locks the second bearing downward; a plurality of through holes are provided at the center of the bottom of the machine base, and a power switch is provided on the outer wall.

[0011] For the above-mentioned clean and easy-to-clean food crusher, the protective cover further includes a third bearing, a top cover nut, and a bearing end cover; a third bearing is provided at the upper end of the top cover of the rotating frame, and the inner wall of the third bearing is locked by the top cover nut; the top cover of the rotating frame is installed on the second annular tubular protrusion at the center of the top cover through the third bearing, and the outer wall of the third bearing is locked by the bearing end cover; a plurality of notches are provided at the outer edge of the bottom end of the outer wall of the top cover, and the top cover is fixed to the top of the machine base along the notches through a quick locking device.

[0012] For the above-mentioned clean and easy-to-clean food crusher, a fourth annular groove is formed at the position where the transmission shaft contacts the end cover of the inner cylinder of the base, and a first sealing ring is provided between the inner hole of the end cover of the inner cylinder of the base and the fourth annular groove of the transmission shaft; a fifth annular groove is formed at the position where the top cover of the rotating frame contacts the bearing end cover, and a second sealing ring is provided between the inner hole of the bearing end cover and the fifth annular groove of the top cover of the rotating frame.

[0013] For the above-mentioned clean and easy-to-clean food crusher, the quick locking device includes an ear plate, a pin shaft, a pin shaft nut, a bolt, and an annular nut. The ear plate is fixed to the outer wall of the machine base. The pin shaft is inserted into the inner hole of the ear plate and tightened by the pin shaft nut. A through hole is provided at the lower end of the bolt, which is sleeved on the pin shaft, and the annular nut is sleeved on the upper end of the bolt.

[0014] For the above-mentioned clean and easy-to-clean food crusher, the components directly contacting the food include a cup body, a cup lid, a rotating frame, and a silicone ring, all of which are detachable structures; the base and the protective cover are respectively integral components.

[0015] A method for using a clean and easy-to-clean food crusher includes the following steps:

[0016] (1) Nest two silicone rings in the third annular grooves at the upper and lower ends of the central shaft respectively, and then install the rotating frame on the transmission shaft with the blade facing downward, and the first protrusion at the top end of the transmission shaft is embedded in the axial groove at the bottom end of the central shaft to complete the installation of the rotating frame;

[0017] (2) Add the food to be crushed into the cup body, and then install the cup lid;

[0018] (3) Insert the second bump at the bottom end of the top cover of the rotating frame into the axial groove at the top end of the central shaft, and fix the protective cover to the top end of the machine base through a quick locking device.

[0019] (4) Turn on the power switch. After the food is crushed, turn off the power switch.

[0020] (5) Unlock the quick locking device, open the protective cover, open the cup lid, disassemble the rotating frame and the silicone ring, take out the cup body, and transfer the crushed food.

[0021] (6) Thoroughly clean and disinfect the cup body, rotating frame, cup lid, and silicone ring that directly contact the food.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The present invention realizes an open isolation between the space in direct contact with food and the external space, preventing foreign objects in the external space from entering the space in direct contact with food and contaminating the food, and preventing the food from overflowing into the external space.

[0024] 2. The present invention arranges the transmission shaft supporting the rotating frame outside the space in direct contact with food, thus avoiding the use of sealing materials and direct contact between moving and static parts in the space in direct contact with food. Therefore, there is no risk of contaminating food due to wear and aging of the sealing materials.

[0025] 3. In the space in direct contact with food of the present invention, there are no structural dead corners, and the components directly contacting food, including the cup body, cup lid, rotating frame, and silicone ring, are all detachable and dead - angle - free structures, which are easy to thoroughly clean and disinfect through special disinfection appliances, without the problem of mold growth, and the silicone ring can be replaced regularly; the inside of the base and the protective cover that do not directly contact food can be directly cleaned.

[0026] 4. The assembly and disassembly process of the detachable components of the present invention is convenient, and all rotating components are sealed in the internal space of the base and the protective cover, and the operation is safe and reliable. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of the clean and easy - to - clean food crusher of the present invention.

[0028] Figure 2 It is a cross - sectional view of the clean and easy - to - clean food crusher of the present invention.

[0029] Figure 3 It is a schematic internal structure diagram of the clean and easy - to - clean food crusher of the present invention.

[0030] Figure 4 It is a schematic structural diagram of the base of the present invention.

[0031] Figure 5 This is a schematic diagram of a partial cross-sectional structure of the cup body of the present invention.

[0032] Figure 6 This is a schematic diagram of the bottom structure of the cup body of the present invention.

[0033] Figure 7 This is a schematic diagram of the structure of the rotating frame of the present invention.

[0034] Figure 8 This is a schematic diagram of the structure of the central axis of the rotating frame of the present invention.

[0035] Figure 9 This is a schematic diagram of the structure of the cup lid of the present invention.

[0036] Figure 10 This is a schematic diagram of the structure of the protective cover of the present invention.

[0037] Figure 11 This is a schematic diagram of the upper end structure of the motor of the present invention.

[0038] Figure 12 This is a schematic diagram of the structure of the machine base of the present invention.

[0039] Figure 13 This is a schematic diagram of the upper end structure of the transmission shaft of the present invention.

[0040] Figure 14 This is a schematic diagram of the structure of the top cover of the protective cover of the present invention.

[0041] Figure 15 This is a schematic diagram of the structure of the top cover of the rotating frame of the present invention.

[0042] Figure 16 This is a schematic diagram of the isolation method of the present invention. Embodiment

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] As Figures 1 - 16 shown, a clean and easy-to-clean food crusher includes a base 1, a cup body 2, a rotating frame 3, a silicone ring 4, a cup lid 5 and a protective cover 6; the cup body 2 is installed inside the base 1, and the cup lid 5 is installed at the top of the cup body 2; the base 1 includes a machine base 11, a motor 12 is provided in the middle of the machine base 11, and the motor 12 is connected to a transmission shaft 13; the protective cover 6 includes a top cover 61 and a top cover 62 of the rotating frame, and a top cover 62 of the rotating frame is provided at the center of the bottom of the top cover 61; the protective cover 6 is installed at the top of the machine base 11 and locked by a quick locking device 17.

[0045] The rotating frame 3 is in an umbrella shape, including a central shaft 31, multiple L-shaped frameworks 32, multiple annular ribs 33 and multiple blades 34. The bottom end of the central shaft 31 is installed at the top end of the transmission shaft 13 to achieve upward support of the rotating frame, and the bottom end of the rotating frame top cover 62 presses against the top end of the central shaft 31 to achieve downward pressing of the rotating frame; both ends of the central shaft 31 are provided with multiple axially distributed grooves 35 evenly, the top end of the transmission shaft 13 is provided with multiple first protrusions 131 evenly distributed, and the bottom end of the rotating frame top cover 62 is provided with multiple second protrusions 621 evenly distributed. The multiple second protrusions 621 and the first protrusions 131 are respectively embedded in the corresponding axially distributed grooves 35 at the upper and lower ends of the central shaft 31 to achieve the limit of the rotating frame in the horizontal plane and transmit rotation; the upper end of each framework 32 is fixed at the same height on the side wall of the central shaft 31 and is distributed in a ring shape. The annular ribs 33 connect all the frameworks 32 into a whole in the horizontal direction. A blade 34 is arranged at the bottom of each framework 32 for crushing food.

[0046] The cup body 2 is a double-layer cylindrical structure with an open top, including an inner cup cylinder, an outer cup cylinder and an annular cup bottom connecting the inner cup cylinder and the outer cup cylinder. The upper end of the inner cup cylinder is provided with a first annular groove 22. The frameworks 32 and the blades 34 are placed in the annular cavity 23 between the inner cup cylinder and the outer cup cylinder of the cup body; the cup cover 5 is a double-layer cylindrical structure with an open bottom, including an inner cup cover cylinder, an outer cup cover cylinder and an annular cup top connecting the inner cup cover cylinder and the outer cup cover cylinder. The lower end of the inner cup cover cylinder is provided with a second annular groove 51; both the upper and lower ends of the central shaft 31 are provided with a third annular groove 36. Silicone rings 4 are installed in both third annular grooves 36. The silicone ring 4 at the upper end is nested with the second annular groove 51 of the cup cover 5 to form an annular labyrinth cavity, and the silicone ring 4 at the lower end is nested with the first annular groove 22 of the cup body 2 to form an annular labyrinth cavity; all the parts where the frameworks 32 are connected to the side wall of the central shaft 31 are located between the two silicone rings 4; the umbrella-shaped structure of the rotating frame 3 enables the frameworks 32, the annular ribs 33 and the blades 34 of the rotating frame 3 to be easily accommodated in the space directly contacting food, that is, the annular cavity 23 between the inner cup cylinder and the outer cup cylinder of the cup body 2. At the same time, the setting of the annular labyrinth cavity realizes the open isolation between the space of food and the external space, preventing foreign objects in the external space from entering the space directly contacting food and polluting food, and preventing food from overflowing to the external space.

[0047] A groove 111 is arranged on the bottom surface inside the machine base 11 of the base 1. The bottom of the cup body 2 is provided with a second protrusion 621. The second protrusion 621 is clamped into the groove 111 on the bottom surface inside the machine base 11 to achieve the installation of the cup body 2 and the limit in the horizontal plane.

[0048] The base 1 further includes an inner base cylinder 15 and an end cover 16 of the inner base cylinder; the motor 12 is installed at the central part of the bottom inner wall of the machine base 11. The inner base cylinder 15 covers the motor 12 and is installed at the bottom of the machine base 11. An end cover 16 of the inner base cylinder is provided at the top of the inner base cylinder 15; the lower end of the transmission shaft 13 is installed on the first annular tubular protrusion 121 at the upper end of the motor 12 through a first bearing 141 to support the transmission shaft 13. The top end of the motor output shaft 122 is connected to the lower end of the transmission shaft 13 to transmit rotation; a second bearing 142 is provided between the upper end of the transmission shaft 13 and the inner base cylinder 15, and the end cover 16 of the inner base cylinder locks the second bearing 142 downward for the limit of the transmission shaft 13 in the horizontal plane; a plurality of through holes 112 are provided at the central part of the bottom of the machine base 11 for the heat dissipation of the motor 12, and a power switch 113 is provided on the outer wall for starting and stopping the motor 12.

[0049] The protective cover 6 further includes a third bearing 143, a top cover nut 63, and a bearing end cover 64; the upper end of the rotating frame top cover 62 is provided with a third bearing 143, and the inner wall of the third bearing 143 is locked by the top cover nut 63; the rotating frame top cover 62 is installed on the second annular tubular protrusion 611 at the central part of the cover top 61 through the third bearing 143, and the outer wall of the third bearing 143 is locked by the bearing end cover 64; a plurality of notches 612 are provided at the outer edge of the bottom end of the outer wall of the cover top 61, and the cover top 61 is fixed to the top of the machine base 11 along the notches by a quick locking device 17.

[0050] A fourth annular groove 132 is formed at the position where the transmission shaft 13 contacts the end cover 16 of the inner base cylinder. A first sealing ring 18 is provided between the inner hole of the end cover 16 of the inner base cylinder and the fourth annular groove 132 of the transmission shaft 13; a fifth annular groove 622 is formed at the position where the rotating frame top cover 62 contacts the bearing end cover 64. A second sealing ring 65 is provided between the inner hole of the bearing end cover 64 and the fifth annular groove 622 of the rotating frame top cover ;the arrangements of the first sealing ring 18 and the second sealing ring 65 can prevent foreign objects from entering the space where the bearings are installed and avoid bearing damage.

[0051] The quick locking device 17 includes an ear plate 171, a pin shaft 172, a pin shaft nut 173, a bolt 174, and an annular nut 175. The ear plate 171 is fixed to the outer wall of the machine base 11. The pin shaft 172 is inserted into the inner hole of the ear plate 171 and tightened by the pin shaft nut 173. A through hole is provided at the lower end of the bolt 174 and sleeved on the pin shaft 172. The annular nut 175 is sleeved on the upper end of the bolt 174; the quick locking device 17 is used to lock the cover top 61 and the machine base 11 to form a closed space between the cover top 61 and the machine base 11, avoid any components or food from escaping from the inside, ensure the safety of use, and can achieve sound insulation and reduce noise pollution.

[0052] In a food crusher, the components directly contacting food include the cup body 2, the cup lid 5, the rotating frame 3 and the silicone ring 4, all of which are detachable structures, facilitating thorough cleaning and disinfection, eliminating the problem of food residue accumulation and mold growth, and the assembly and disassembly processes are convenient, safe and reliable; the base 1 and the protective cover 6 are integral components respectively, avoiding complex assembly processes, reducing the usage difficulty and improving safety.

[0053] A method for using a clean and easy-to-clean food crusher includes the following steps:

[0054] (1) Nest the two silicone rings 4 in the third annular grooves 36 at the upper and lower ends of the central shaft 31 respectively, and then install the rotating frame 3 on the transmission shaft 13 with the blade 34 facing downwards, and the first convex block 131 at the top of the transmission shaft 13 is embedded in the axial groove 35 at the bottom of the central shaft 31 to complete the installation of the rotating frame 3;

[0055] (2) Add the food to be crushed into the cup body 2, and then install the cup lid 5;

[0056] (3) Embed the second convex block 621 at the bottom of the rotating frame top cover 62 into the axial groove 35 at the top of the central shaft 31, and fix the protective cover 6 to the top of the machine base 11 through the quick locking device 17;

[0057] (4) Turn on the power switch, and after the food is crushed, turn off the power switch;

[0058] (5) Unlock the quick locking device 17, open the protective cover 6, open the cup lid 5, disassemble the rotating frame 3 and the silicone ring 4, take out the cup body 2, and transfer the crushed food;

[0059] (6) Thoroughly clean and disinfect the cup body 2, the rotating frame 3, the cup lid 5 and the silicone ring 4 that directly contact food.

Claims

1. A clean and easy-to-clean food crusher, characterized in that: It includes a base, a cup body, a rotating frame, a silica gel ring, a cup cover and a protective cover; the cup body is installed inside the base, and the cup cover is installed at the top end of the cup body; the base includes a machine base, a motor is provided in the middle of the machine base, and the motor is connected to a transmission shaft; the protective cover includes a cover top and a rotating frame top cover, and the rotating frame top cover is provided at the center of the bottom of the cover top; the protective cover is installed at the top end of the machine base and locked by a quick locking device. The rotating frame is an umbrella-shaped structure, including a central shaft, multiple L-shaped skeletons, multiple annular ribs and multiple blades. The bottom end of the central shaft is installed at the top end of the transmission shaft, and the bottom end of the rotating frame top cover presses against the top end of the central shaft; multiple evenly distributed axial grooves are provided at both ends of the central shaft, multiple evenly distributed first protrusions are provided at the top end of the transmission shaft, and multiple evenly distributed second protrusions are provided at the bottom end of the rotating frame top cover. The multiple second protrusions and the first protrusions are respectively embedded in the corresponding axial grooves at the upper and lower ends of the central shaft; the upper end of each skeleton is fixed at the same height on the side wall of the central shaft and is distributed in a ring shape. The annular ribs connect all the skeletons into a whole in the horizontal direction, and a blade is provided at the bottom of each skeleton. The cup body is a double-layer cylindrical structure with an open top, including an inner cup cylinder, an outer cup cylinder and an annular cup bottom connecting the inner cup cylinder and the outer cup cylinder. A first annular groove is provided at the upper end of the inner cup cylinder. The skeletons and blades are placed in the annular cavity between the inner cup cylinder and the outer cup cylinder; the cup cover is a double-layer cylindrical structure with an open bottom, including an inner cup cover cylinder, an outer cup cover cylinder and an annular cup top connecting the inner cup cover cylinder and the outer cup cover cylinder. A second annular groove is provided at the lower end of the inner cup cover cylinder; a third annular groove is provided at each of the upper and lower ends of the central shaft, and silica gel rings are installed in both third annular grooves. The silica gel ring at the upper end is nested with the second annular groove of the cup cover to form an annular labyrinth cavity, and the silica gel ring at the lower end is nested with the first annular groove of the cup body to form an annular labyrinth cavity; all the parts where the skeletons are connected to the side wall of the central shaft are located between the two silica gel rings.

2. The clean and easily cleanable food crusher according to claim 1, wherein: A groove is provided on the bottom surface inside the machine base of the base, and a second protrusion is provided at the bottom of the cup body. The second protrusion is snapped into the groove on the bottom surface inside the machine base.

3. The clean and easily cleanable food crusher according to claim 1, wherein: The base further includes an inner base cylinder and an inner base cylinder end cover; the motor is installed at the center of the bottom inner wall of the machine base. The inner base cylinder covers the motor and is installed at the bottom of the machine base. An inner base cylinder end cover is provided at the top of the inner base cylinder; the lower end of the transmission shaft is installed on the first annular tubular protrusion at the upper end of the motor through a first bearing, and the top end of the motor output shaft is connected to the lower end of the transmission shaft; a second bearing is provided between the upper end of the transmission shaft and the inner base cylinder, and the inner base cylinder end cover locks the second bearing downward; multiple through holes are provided at the center of the bottom of the machine base, and a power switch is provided on the outer wall.

4. The clean and easily cleanable food crusher according to claim 1, wherein: The protective cover further includes a third bearing, a top cover nut and a bearing end cover; a third bearing is provided at the upper end of the rotating frame top cover, and the inner wall of the third bearing is locked by the top cover nut; the rotating frame top cover is installed on the second annular tubular protrusion at the center of the cover top through the third bearing and locked by the bearing end cover on the outer wall of the third bearing; multiple notches are provided at the outer edge of the bottom end of the cover top, and the cover top is fixed on the top of the machine base along the notches by a quick locking device.

5. The clean and easily cleanable food crusher according to claim 3, characterized in that: A fourth annular groove is formed at the position on the transmission shaft that contacts the end cover of the inner cylinder of the base. A first sealing ring is provided between the inner hole of the end cover of the inner cylinder of the base and the fourth annular groove of the transmission shaft. A fifth annular groove is formed at the position where the top cover of the rotating frame contacts the bearing end cover. A second sealing ring is provided between the inner hole of the bearing end cover and the fifth annular groove of the top cover of the rotating frame.

6. The clean and easily cleanable food crusher according to claim 1, wherein: The quick locking device includes an ear plate, a pin shaft, a pin shaft nut, a bolt and an annular nut. The ear plate is fixed to the outer wall of the machine base. The pin shaft is inserted into the inner hole of the ear plate and tightened by the pin shaft nut. A through hole is provided at the lower end of the bolt and sleeved on the pin shaft. The annular nut is sleeved on the upper end of the bolt.

7. The clean and easily cleanable food crusher according to claim 1, wherein: The components directly contacting food include a cup body, a cup cover, a rotating frame and a silica gel ring, all of which are detachable structures; the base and the protective cover are integral components respectively.

8. A method for using a clean and easy-to-clean food crusher according to any one of claims 1-7, comprising the following steps: (1) Nest the two silica gel rings in the third annular grooves at the upper and lower ends of the central shaft respectively, and then install the rotating frame on the transmission shaft with the blade facing downwards, and the first convex block at the top of the transmission shaft is embedded in the axial groove at the bottom of the central shaft to complete the installation of the rotating frame; (2) Add the food to be crushed into the cup body, and then install the cup cover; (3) Embed the second convex block at the bottom end of the top cover of the rotating frame into the axial groove at the top end of the central shaft, and fix the protective cover to the top end of the machine base through the quick locking device; (4) Turn on the power switch, and turn off the power switch after the food is crushed; (5) Unlock the quick locking device, open the protective cover, open the cup cover, disassemble the rotating frame and the silica gel ring, take out the cup body, and transfer the crushed food; (6) Thoroughly clean and disinfect the cup body, rotating frame, cup cover and silica gel ring that directly contact food.

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