A grinder

Abstract

The utility model relates to the technical field of grinding devices, and more specifically, to a grinder, comprising a detachably connected grinding assembly and a base, the grinding assembly comprising an outer cover, a grinding cup assembly and a grinding mechanism; the base comprising a shell and a driving mechanism, the grinding mechanism can mesh with the driving mechanism, and the outer cover is also detachably connected to the shell; the grinding mechanism comprises a blade, a transmission shaft, and a driven wheel, the blade and the driven wheel are respectively mounted at both ends of the transmission shaft, the blade is located in the grinding cup assembly, the transmission shaft is passed through the grinding cup assembly, and the driven wheel is located outside the grinding cup assembly; the driving mechanism comprises a motor, an output shaft, and a driving wheel all mounted in the shell, the output shaft is connected to the motor, and the driving wheel is mounted at the end of the output shaft away from the motor; when the grinding assembly is connected to the base, the driven wheel and the driving wheel mesh with each other. The utility model provides a grinder that is easy to disassemble and clean, has a good grinding effect, and has a long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding devices, and more specifically, to a grinder. Background Art

[0002] Grinders, especially food grinders, are mainly used to crush and grind solid block foods to turn large solid particles into small particles or even powder. For example, spices or drinks such as pepper and curry powder, after grinding, the powdered and granular ingredients are easily dissolved or evenly dispersed in food or liquid to enhance the taste. The drive device of the existing grinder is generally arranged inside the body, and many of the grinding discs and paddles are fixed to the output shaft of the drive device, while the grinding seat is fixed inside the body, such as the bottom of the storage container, which makes it difficult to disassemble. Therefore, there is a problem of difficult cleaning or incomplete cleaning. When grinding different types of food, it is easy to mix flavors. Even if the same type of food is ground, due to incomplete cleaning, hygiene problems will arise after a period of time.

[0003] The existing patent CN107752802A discloses a grinder, which includes a storage container, an electric drive device, and a base. The storage container is provided with a storage space and a device space, a connection ring with a material inlet extends from the bottom of the storage container, and a hollow grinding seat and a fixed ring are detachably installed in the material inlet and on the connection ring respectively; the electric drive device is detachably installed in the device space, and the base is detachably connected to the bottom of the storage container, the base has a hollow grinding chamber, a support member with a pivot on the top surface is provided in the grinding chamber, and a driven rod is sleeved with a conical grinding disc linked to it, and the top and bottom of the driven rod are respectively sleeved on the output shaft and the pivot, so that the grinding disc extends into the grinding seat and forms a gap between the two. In the above-disclosed technical solution, the grinding disc and the driving device are detachably connected, so the grinding disc can be easily disassembled and cleaned. However, the grinding disc and the driving shaft are detachably connected through a mutually socketed structure. During the grinding process, the grinding disc is subjected to greater resistance from the object to be ground, which in turn causes the socketing structure between the grinding disc and the driving shaft to be subjected to greater force and wear. After a long period of use, the socketing structure is prone to loosening, which affects the grinding effect. Utility Model Content

[0004] The utility model aims to overcome the problem that the existing grinder which is easy to disassemble and clean is easy to wear and loosen between the grinding disc and the driving shaft, and to provide a grinder which is easy to disassemble and clean, has good grinding effect and has a long service life.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A grinder comprises a detachably connected grinding assembly and a base, wherein the grinding assembly comprises an outer cover, a grinding cup assembly and a grinding mechanism, wherein the grinding mechanism is partially installed in the grinding cup assembly and partially protrudes from the bottom of the grinding cup assembly, and the outer cover is detachably covered and arranged outside the grinding cup assembly; the base comprises a shell and a driving mechanism, wherein the driving mechanism is installed in the shell, and when the grinding assembly is connected to the base, the grinding mechanism can mesh with the driving mechanism, and the outer cover is also detachably connected to the shell; the grinding mechanism comprises a blade, a transmission shaft, and a driven wheel, wherein the blade and the driven wheel are respectively installed at two ends of the transmission shaft, the blade is located in the grinding cup assembly, the transmission shaft passes through the grinding cup assembly, and the driven wheel is located outside the grinding cup assembly; the driving mechanism comprises a motor, an output shaft, and a driving wheel, all of which are installed in the shell, wherein the output shaft is connected to the motor, and the driving wheel is installed at the end of the output shaft away from the motor; when the grinding assembly is connected to the base, the driven wheel meshes with the driving wheel.

[0007] The utility model meshes the driven wheel in the grinding mechanism with the driving wheel in the driving mechanism, and uses the motor to drive the output shaft to drive the driving wheel to rotate, thereby transmitting power to the driven wheel, and then driving the transmission shaft to drive the blade to rotate to achieve the grinding function; preferably, the driving wheel and the driven wheel are both gear structures; the two are meshed with each other to achieve transmission, which can not only achieve a reliable transmission effect, facilitate grinding and have a good grinding effect, but also prevent the resistance of the grinding cup from directly acting on the output shaft, which can avoid causing a large torque or shear force to the output shaft, and therefore is conducive to extending the service life; at the same time, the grinding cup assembly and the shell are detachably connected, which can facilitate the disassembly and cleaning of the grinding cup.

[0008] Furthermore, the grinding mechanism also includes a transition piece and a sleeve, the sleeve is movably sleeved outside the transmission shaft, the transition piece is located between the grinding cup assembly and the sleeve, and the outer side of the transition piece is connected to the grinding cup assembly, and the inner side of the transition piece is movably sleeved with the sleeve. Preferably, the transition piece is an aluminum core, and the transition piece is used to achieve the connection between the sleeve and the grinding cup assembly. The sleeve can be a copper sleeve, and the sleeve functions like a bearing, which can make the transmission shaft drive the grinding cup assembly to rotate, but the performance of the sleeve is better than that of the bearing, can withstand greater force, and is not easy to wear.

[0009] Furthermore, the grinding cup assembly includes a grinding cup and a cup seat connected to each other, the grinding cup has an open mouth, a hollow accommodating cavity is provided inside the grinding cup, and the blade is located at the bottom of the grinding cup accommodating cavity; the cup seat is a cavity structure with an open bottom, a transition piece is connected to the cup seat, a transmission shaft is passed through the grinding cup and the cup seat, a driven wheel is located in the cup seat, and the cup seat can be snap-fitted with the shell. The grinding cup is used to hold the material to be ground, and the cup seat is used to connect the grinding cup to the shell, and the cup seat facilitates the connection and installation of the transmission shaft and the sleeve.

[0010] Furthermore, a clamping plate is provided at the bottom of the accommodating cavity of the grinding cup, and the clamping plate is located at the top of the cup seat; a first sealing ring is also installed between the grinding cup and the cup seat. The clamping plate can limit the position of the cup seat and the blade; the first sealing ring is used to achieve sealing between the grinding cup and the cup seat.

[0011] Furthermore, a mounting seat is installed on the top of the shell, the cup holder is snap-fitted with the mounting seat, and the outer cover is also snap-fitted with the mounting seat. Preferably, a plurality of first snap-fitting members are sequentially arranged on the outer circumference of the cup holder, and a second snap-fitting member is sequentially arranged on the inner circumference of the mounting seat, and the snap-fitting of the cup holder and the mounting seat is achieved by snapping the first snap-fitting member with the second snap-fitting member. Similarly, a plurality of third snap-fitting members are sequentially arranged on the inner circumference of the outer cover, and a plurality of fourth snap-fitting members are sequentially arranged on the outer circumference of the mounting seat, and the snap-fitting of the outer cover and the mounting seat is achieved by snapping the third snap-fitting member with the fourth snap-fitting member.

[0012] Furthermore, a plurality of convex ribs for guiding are provided along the circumferential inner wall of the grinding cup accommodating cavity, and the plurality of convex ribs are arranged at intervals. The convex ribs are used to guide the object to be ground during the grinding process, so that the fine particles of the object to be ground move in a certain direction under the action of centrifugal force, thereby preventing the fine particles of the object to be ground from squeezing each other and causing a jam between the blades, thereby affecting the grinding effect. Within the scope of knowledge of those skilled in the art, other guiding structures can also be used instead of the convex ribs to achieve the guiding effect.

[0013] Furthermore, the plurality of convex ribs are arranged obliquely from the lower right to the upper left or from the lower left to the upper right along the rotation direction of the grinding cup. Such arrangement is conducive to achieving the guiding function of the convex ribs.

[0014] Furthermore, the outer cover is also a hollow cavity structure with an opening at the bottom, and a guard eave extends downward from the top of the hollow cavity of the outer cover, and a mounting position is formed between the guard eave and the inner wall of the hollow cavity, and a second sealing ring is installed in the mounting position, and the top of the grinding cup is inserted into the mounting position and abuts against the second sealing ring. The provision of the guard eave can facilitate the clamping of the outer cover and the grinding cup to ensure that the ground material does not overflow during the grinding process. The provision of the second sealing ring can seal the outer cover and the grinding cup.

[0015] Furthermore, the outer cover is made of a transparent material, which can facilitate observation of the grinding condition of the object to be ground during the grinding process, so as to adjust the rotation speed of the motor accordingly and improve the grinding efficiency.

[0016] Furthermore, the blade includes a first blade group and a second blade group that are arranged crosswise, the middle of the first blade group is connected to the middle of the second blade group; the first blade group is raised in the middle and both ends are arranged horizontally; the second blade group is raised at both ends and the middle is arranged horizontally. The first blade group and the second blade group cooperate with each other to further improve the grinding effect. Within the scope of knowledge of those skilled in the art, the blade can also be other structures.

[0017] The beneficial effects of the utility model are:

[0018] (1) The motor drives the output shaft and the driving wheel to rotate, and the driving wheel is meshed with the driven wheel, thereby driving the driven wheel, the transmission shaft and the blade to rotate, thereby achieving a better grinding effect while preventing the output shaft from being subjected to a large shear force or torque, which is beneficial to extending the service life of the grinder;

[0019] (2) The detachable grinding cup is easy to clean, which is beneficial to improve the cleaning effect and ensure hygiene and grinding quality;

[0020] (3) The outer cover is snap-fitted to the mounting seat, and the cup holder is also snap-fitted to the mounting seat, which is beneficial to improving the reliability of the connection between the outer cover and the shell, and between the cup holder and the shell;

[0021] (4) The provision of the first sealing ring and the second sealing ring is conducive to improving the sealing performance of the grinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the first direction of the utility model.

[0023] Figure 2 It is an exploded structural diagram of the utility model.

[0024] Figure 3 It is a structural diagram of the second direction of the utility model.

[0025] Figure 4 yes Figure 3 AA section view.

[0026] Figure 5 yes Figure 4 A partial enlarged view of point B.

[0027] Figure 6 It is a structural diagram of a blade of the utility model.

[0028] The graphic symbols are explained as follows:

[0029] 1. Outer cover; 11. Eaves guard; 12. Mounting position; 2. Grinding cup; 21. Convex rib; 22. Cup sleeve; 3. Cup holder; 41. Blade; 411. First blade group; 412. Second blade group; 42. Transmission shaft; 43. Driven wheel; 5. Shell; 51. Mounting seat; 52. Main body; 53. Base; 54. Power cord; 55. Foot pad; 6. Driving mechanism; 61. Motor; 62. Output shaft; 63. Driving wheel; 71. Transition piece; 72. Sleeve; 73. Card plate; 74. First sealing ring; 75. Second sealing ring. DETAILED DESCRIPTION

[0030] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0031] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0033] Example 1

[0034] like Figures 1 to 6The figure shows an embodiment of a grinder of the utility model, comprising a detachably connected grinding assembly and a base, the grinding assembly comprising an outer cover 1, a grinding cup assembly and a grinding mechanism, the grinding mechanism is partially installed in the grinding cup assembly, and partially protrudes from the bottom of the grinding cup assembly, and the outer cover 1 is detachably covered outside the grinding cup assembly; the base comprises a shell 5 and a driving mechanism 6, the driving mechanism 6 is installed in the shell 5, when the grinding assembly is connected to the base, the grinding mechanism can mesh with the driving mechanism 6, and the outer cover 1 is also detachably connected to the shell 5; the grinding mechanism comprises a knife The blade 41, the transmission shaft 42, and the driven wheel 43 are respectively installed at both ends of the transmission shaft 42, the blade 41 is located in the grinding cup assembly, the transmission shaft 42 is penetrated in the grinding cup assembly, and the driven wheel 43 is located outside the grinding cup assembly; the driving mechanism 6 includes a motor 61, an output shaft 62, and a driving wheel 63 all installed in the shell 5, the output shaft 62 is connected to the motor 61, and the driving wheel 63 is installed at the end of the output shaft 62 away from the motor 61; when the grinding assembly is connected to the base, the driven wheel 43 and the driving wheel 63 are meshed with each other.

[0035] The utility model meshes the driven wheel 43 in the grinding mechanism with the driving wheel 63 in the driving mechanism 6, and uses the motor 61 to drive the output shaft 62 to drive the driving wheel 63 to rotate, thereby transmitting power to the driven wheel 43, and then driving the transmission shaft 42 to drive the blade 41 to rotate to achieve the grinding function; preferably, the driving wheel 63 and the driven wheel 43 are both gear structures; the two are meshed with each other to achieve transmission, which can not only achieve a reliable transmission effect, facilitate grinding and have a good grinding effect, but also prevent the resistance of the grinding cup 2 from directly acting on the output shaft 62, and avoid causing a large torque or shear force to the output shaft 62, thereby helping to extend the service life; at the same time, the grinding cup assembly and the shell 5 are detachably connected, which can facilitate the disassembly and cleaning of the grinding cup 2.

[0036] Specifically, the grinding mechanism further includes a transition piece 71 and a sleeve 72. The sleeve 72 is movably sleeved outside the transmission shaft 42. The transition piece 71 is located between the grinding cup assembly and the sleeve 72. The outer side of the transition piece 71 is connected to the grinding cup assembly, and the inner side of the transition piece 71 is movably sleeved with the sleeve 72. Preferably, the transition piece 71 is an aluminum core, and the transition piece 71 is used to realize the connection between the sleeve 72 and the grinding cup assembly. The sleeve 72 can be a copper sleeve. The function of the sleeve 72 is similar to a bearing, which can make the transmission shaft 42 drive the grinding cup assembly to rotate, but the performance of the sleeve 72 is better than that of the bearing, and it can withstand greater force and is not easy to wear.

[0037] The grinding cup assembly includes a grinding cup 2 and a cup seat 3 connected to each other. The grinding cup 2 is open at its mouth, and a hollow accommodating cavity is provided inside the grinding cup 2. The blade 41 is located at the bottom of the accommodating cavity of the grinding cup 2. The cup seat 3 is a cavity structure with an open bottom. The transition piece 71 is connected to the cup seat 3. The transmission shaft 42 is passed through the grinding cup 2 and the cup seat 3. The driven wheel 43 is located in the cup seat 3. The cup seat 3 can be snap-fitted with the shell 5. The grinding cup 2 is used to hold the material to be ground, and the cup seat 3 is used to connect the grinding cup 2 with the shell 5. Moreover, the cup seat 3 facilitates the connection and installation of the transmission shaft 42 and the sleeve 72. Preferably, a cup sleeve 22 for anti-slip is provided on the outer cover of the grinding cup 2. The cup sleeve 22 can be made of silicone or rubber, and the cup sleeve 22 has an interference fit with the grinding cup 2.

[0038] Furthermore, a clamping plate 73 is provided at the bottom of the accommodating cavity of the grinding cup 2, and the clamping plate 73 is located at the top of the cup seat 3; a first sealing ring 74 is also installed between the grinding cup 2 and the cup seat 3. The clamping plate 73 can limit the position of the cup seat 3 and the blade 41; the first sealing ring 74 is used to achieve sealing between the grinding cup 2 and the cup seat 3.

[0039] As an improved solution of this embodiment, a mounting seat 51 is installed on the top of the shell 5, and the cup holder 3 is clamped with the mounting seat 51. Preferably, a plurality of first clamping members are sequentially provided on the outer circumference of the cup holder 3, and a second clamping member is sequentially provided on the inner circumference of the mounting seat 51, and the clamping of the cup holder 3 and the mounting seat 51 is achieved by the clamping of the first clamping member and the second clamping member. Similarly, a plurality of third clamping members are sequentially provided on the inner circumference of the outer cover 1, and a plurality of fourth clamping members are sequentially provided on the outer circumference of the mounting seat 51, and the clamping of the outer cover 1 and the mounting seat 51 is achieved by the clamping of the third clamping member and the fourth clamping member. The first clamping member can be a protrusion, and the second clamping member can be a groove, and the protrusion and the groove cooperate with each other to achieve clamping; of course, the two can also be interchangeable, the first clamping member is a groove, and the second clamping member is a protrusion; the structure of the third clamping member and the fourth clamping member is similar to the structure of the first clamping member and the second clamping member.

[0040] Furthermore, a plurality of convex ribs 21 for guiding are provided along the circumferential inner wall of the accommodating cavity of the grinding cup 2, and the plurality of convex ribs 21 are arranged at intervals. The convex ribs 21 are used to guide the object to be ground during the grinding process, so that the fine particles of the object to be ground move in a certain direction under the action of centrifugal force, and avoid the fine particles of the object to be ground from squeezing each other and causing a jam between the blade 41, thereby affecting the grinding effect. Within the scope of knowledge of those skilled in the art, other guiding structures can also be used instead of the convex ribs 21 to achieve the guiding effect.

[0041] Furthermore, the plurality of ribs 21 are arranged obliquely from the lower right to the upper left or from the lower left to the upper right along the rotation direction of the grinding cup 2. Such arrangement is conducive to achieving the guiding function of the ribs 21.

[0042] As an improved solution of this embodiment, the outer cover 1 is also a hollow cavity structure with an open bottom. A retaining eave 11 extends downward from the top of the hollow cavity of the outer cover 1. An installation position 12 is formed between the retaining eave 11 and the inner wall of the hollow cavity. A second sealing ring 75 is installed in the installation position 12. The top of the grinding cup 2 is inserted into the installation position 12 and abuts against the second sealing ring 75. The provision of the retaining eave 11 can facilitate the clamping of the outer cover 1 and the grinding cup 2 to ensure that the ground material does not overflow during the grinding process. The provision of the second sealing ring 75 can seal the outer cover 1 and the grinding cup 2.

[0043] As an improved solution of this embodiment, the housing 5 includes a main body 52 and a base 53 which are detachably connected, and the mounting seat 51 and the driving mechanism 6 are both arranged on the main body 52; a plurality of anti-slip pads 55 are also arranged at the bottom of the base 53. Furthermore, the grinder also includes a power cord 54, which is passed through the main body 52 or the base 53 and connected to the motor 61 in the driving mechanism 6.

[0044] Example 2

[0045] This embodiment is a second embodiment of a grinder, which is similar to the first embodiment, except that the outer cover 1 is made of a transparent material. The outer cover 1 made of a transparent material can be used to observe the grinding condition of the object to be ground during the grinding process, so as to adjust the rotation speed of the motor 61 accordingly and improve the grinding efficiency.

[0046] Example 3

[0047] This embodiment is embodiment 3 of a grinder, which is similar to embodiment 1, except that the blade 41 includes a first blade group 411 and a second blade group 412 that are arranged crosswise, the middle of the first blade group 411 is connected to the middle of the second blade group 412; the first blade group 411 is raised in the middle, and both ends are arranged horizontally; the second blade group 412 is raised at both ends, and the middle is arranged horizontally. The first blade group 411 and the second blade group 412 cooperate with each other to further improve the grinding effect. Within the scope of knowledge of those skilled in the art, the blade 41 can also be other structures.

[0048] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A grinder, comprising a detachably connected grinding assembly and a base, the grinding assembly comprising an outer cover (1), a grinding cup assembly and a grinding mechanism, the grinding mechanism being partially installed in the grinding cup assembly and partially protruding from the bottom of the grinding cup assembly, the outer cover (1) being detachably covered outside the grinding cup assembly; the base comprising a shell (5) and a driving mechanism (6), the driving mechanism (6) being installed in the shell (5), the grinding mechanism being able to engage with the driving mechanism (6) when the grinding assembly is connected to the base, the outer cover (1) being detachably connected to the shell (5); characterized in that The grinding mechanism comprises a blade (41), a transmission shaft (42), and a driven wheel (43), wherein the blade (41) and the driven wheel (43) are respectively mounted at two ends of the transmission shaft (42), the blade (41) is located inside the grinding cup assembly, the transmission shaft (42) passes through the grinding cup assembly, and the driven wheel (43) is located outside the grinding cup assembly; the driving mechanism (6) comprises a motor (61), an output shaft (62), and a driving wheel (63) all mounted inside the housing (5), the output shaft (62) is connected to the motor (61), and the driving wheel (63) is mounted at the end of the output shaft (62) away from the motor (61); when the grinding assembly is connected to the base, the driven wheel (43) and the driving wheel (63) are meshed with each other.

2. The grinder according to claim 1, characterized in that The grinding mechanism also includes a transition piece (71) and a sleeve (72), wherein the sleeve (72) is movably sleeved outside the transmission shaft (42), the transition piece (71) is located between the grinding cup assembly and the sleeve (72), and the outer side of the transition piece (71) is connected to the grinding cup assembly, and the inner side of the transition piece (71) is movably sleeved with the sleeve (72).

3. The grinder according to claim 2, characterized in that The grinding cup assembly comprises a grinding cup (2) and a cup seat (3) which are connected to each other. The grinding cup (2) has an open mouth, a hollow accommodating cavity is arranged inside the grinding cup (2), and the blade (41) is located at the bottom of the accommodating cavity of the grinding cup (2); the cup seat (3) is a cavity structure with an open bottom, a transition piece (71) is connected to the cup seat (3), a transmission shaft (42) is passed through the grinding cup (2) and the cup seat (3), a driven wheel (43) is located in the cup seat (3), and the cup seat (3) can be snap-connected with a housing (5).

4. The grinder according to claim 3, characterized in that A clamping plate (73) is provided at the bottom of the accommodating cavity of the grinding cup (2), and the clamping plate (73) is located at the top of the cup seat (3); a first sealing ring (74) is also provided between the grinding cup (2) and the cup seat (3).

5. The grinder according to claim 4, characterized in that A mounting seat (51) is mounted on the top of the shell (5), the cup seat (3) is snap-connected to the mounting seat (51), and the outer cover (1) is also snap-connected to the mounting seat (51).

6. The grinder according to any one of claims 3 to 5, characterized in that A plurality of convex ribs (21) for guiding are obliquely arranged along the circumferential inner wall of the grinding cup (2) accommodating cavity, and the plurality of convex ribs (21) are arranged at intervals.

7. The grinder according to claim 6, characterized in that The plurality of convex ribs (21) are all arranged obliquely from the lower right to the upper left or from the lower left to the upper right along the rotation direction of the grinding cup (2).

8. The grinder according to claim 3, characterized in that The outer cover (1) is also a hollow cavity structure with an opening at the bottom. A guardrail (11) extends downward from the top of the hollow cavity of the outer cover (1). An installation position (12) is formed between the guardrail (11) and the inner wall of the hollow cavity. A second sealing ring (75) is installed in the installation position (12). The top of the grinding cup (2) is inserted into the installation position (12) and abuts against the second sealing ring (75).

9. The grinder according to claim 1, characterized in that The outer cover (1) is made of transparent material.

10. The grinder according to claim 1, characterized in that The blade (41) comprises a first blade group (411) and a second blade group (412) which are arranged crosswise with each other, wherein the middle of the first blade group (411) is connected to the middle of the second blade group (412); the middle of the first blade group (411) is raised, and both ends are arranged horizontally; the second blade group (412) is raised at both ends, and the middle is arranged horizontally.

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