Meat grinder

Abstract

The utility model provides a meat grinder which comprises a cutterhead, a feeding device, a driving device, a driving device and a driving device, wherein a supporting hole and a material passing hole are formed in the axis direction of the cutterhead; the shaft sleeve is inserted into the supporting hole; a rotating shaft of the spiral roller is inserted into the shaft sleeve, and the spiral roller is used for pushing the food materials to the material passing hole; the contact area of the outer side wall of the shaft sleeve and the inner wall of the supporting hole is smaller than the surface area of the outer side wall of the shaft sleeve. By arranging the shaft sleeve, the situation that food is polluted by black dirt formed by fine metal particles generated by abrasion due to hard friction between the rotating shaft and the supporting hole of the cutterhead is avoided, the food safety is improved, abrasion of the shaft sleeve and the cutterhead is reduced, the service life is prolonged, and the user experience is improved. The contact area of the outer side wall of the shaft sleeve and the inner wall of the supporting hole is smaller than the surface area of the outer side wall of the shaft sleeve, friction force between the shaft sleeve and the inner side wall of the supporting hole is reduced, and synchronous smooth rotation of the shaft sleeve and the rotating shaft is guaranteed. And under the condition that the spiral roller slightly and radially swings during rotation, the shaft sleeve can be stably supported in the supporting hole, so that the reliability is improved.

Description

Technical Field

[0001] This disclosure relates to the field of food processing technology, and in particular to a meat grinder. Background Technology

[0002] In related technologies, when a meat grinder is grinding meat, the rotating shaft of the threaded roller will rub against the meat grinder disc, causing metal powder to fall from the rotating shaft or meat grinder disc into the ground meat, thus contaminating the food and affecting the user's health and experience. Utility Model Content

[0003] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] In view of the above, a meat grinder is provided according to an embodiment of the present disclosure, comprising:

[0005] The cutter head has a support hole and a material passage hole along its axial direction.

[0006] The bushing is inserted into the aforementioned support hole;

[0007] The spiral roller, the shaft of which is inserted into the bushing, is used to push the food into the feed hole.

[0008] The contact area between the outer wall of the bushing and the inner wall of the support hole is smaller than the surface area of ​​the outer wall of the bushing.

[0009] In one possible implementation, the bushing is fixed to the shaft.

[0010] In one possible implementation, the bushing and the shaft are interference-fitted; or the bushing and the shaft are threaded together.

[0011] In one feasible implementation, there is a gap between the outer wall of the bushing and the inner wall of the support hole, wherein the gap size is greater than or equal to 0.1 mm.

[0012] In one feasible embodiment, the bushing is provided with a mating section. When the bushing is installed in the support hole, the mating section is located inside the support hole, and the outer side wall of the mating section contacts the inner side wall of the support hole.

[0013] In one feasible implementation, the outer wall surface of the aforementioned mating section is spherical; and / or the outer wall of the aforementioned mating section has a protrusion for contacting the inner wall of the aforementioned support hole; and / or the surface of the aforementioned bushing for contacting the aforementioned rotating shaft is cylindrical.

[0014] In one feasible implementation, the internal hole of the bushing is a blind hole or a through hole.

[0015] In one feasible implementation, the meat grinder further includes:

[0016] The blade, mounted on the aforementioned spiral roller, is used to cut food ingredients.

[0017] In one feasible implementation, the aforementioned cutting tool includes:

[0018] The connecting portion, the aforementioned spiral roller includes a spiral roller body, a mating portion and the aforementioned rotating shaft, the aforementioned mating portion is located between the aforementioned spiral roller body and the aforementioned rotating shaft, and the aforementioned connecting portion is installed on the aforementioned mating portion;

[0019] A blade is disposed on the side of the connecting part, and the cutting edge of the blade is parallel to the end face of the cutter disc near the connecting part.

[0020] In one possible implementation, the bushing protrudes from the end face of the cutter head near the connecting portion and is inserted into the connecting portion.

[0021] In one feasible implementation, the meat grinder further includes:

[0022] The housing has a meat grinding chamber and a feeding channel, the meat grinding chamber and the feeding channel are connected, the cutter disc is disposed at the outlet end of the meat grinding chamber, and the spiral roller, the cutter and the cutter disc are arranged sequentially along the direction from the inlet end to the outlet end of the meat grinding chamber.

[0023] In one feasible implementation, the meat grinder further includes:

[0024] A fixing element is provided on the housing to fix the cutter disc to the outlet end of the meat grinding chamber.

[0025] In one feasible implementation, the meat grinder further includes:

[0026] The drive unit, to which the spiral roller is connected.

[0027] In one feasible implementation, the hardness of the bushing is lower than that of the cutter head.

[0028] In one feasible implementation, the material of the bushing includes POM plastic.

[0029] Compared to existing technologies, this disclosure offers at least the following advantages: The meat grinder provided in this embodiment includes a blade disc, a bushing, and a spiral roller. Along the axial direction of the blade disc, the disc body may have a support hole and a feed hole. The bushing can be inserted into the support hole and can rotate relative to it. When the spiral roller rotates, it pushes the meat to be processed to the feed hole of the blade disc, where it is cut by the grinding blades and exits through the feed hole. Specifically, the shaft of the spiral roller can be inserted into the bushing, and the bushing and shaft can rotate synchronously, allowing the spiral roller to rotate relative to the blade disc. By using a bushing, hard friction between the shaft and the support hole of the blade disc is avoided, preventing the formation of fine metal particles from wear that contaminate food, thus improving food safety, reducing wear on the bushing and blade disc, extending service life, and enhancing user experience. Meanwhile, the contact area between the outer wall of the bushing and the inner wall of the support hole is smaller than the surface area of ​​the outer wall of the bushing, thereby reducing the contact area between the bushing and the support hole, reducing the friction between the bushing and the inner wall of the support hole, and ensuring that the bushing can rotate smoothly and synchronously with the shaft. Furthermore, even when the spiral roller experiences slight radial oscillation during rotation, the bushing can still be stably supported within the support hole of the cutter head, improving reliability. Attached Figure Description

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0031] Figure 1 A schematic structural diagram of a meat grinder according to an embodiment of this disclosure;

[0032] Figure 2 This is a schematic exploded structural diagram of a meat grinder according to an embodiment of the present disclosure;

[0033] Figure 3 A schematic cross-sectional view of a meat grinder according to an embodiment of this disclosure;

[0034] Figure 4 A schematic exploded cross-sectional view of a meat grinder according to an embodiment of this disclosure;

[0035] Figure 5 This is a schematic assembly diagram of a shaft and bushing according to an embodiment of the present disclosure.

[0036] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0037] 100 meat grinder;

[0038] 110 cutter head, 120 bushing, 130 spiral roller, 140 cutter, 150 housing, 160 fixture, 170 drive unit, 180 disc body;

[0039] 111 Support hole, 112 Material passage hole, 131 Spiral roller body, 132 Mating part, 133 Rotating shaft, 141 Connecting part, 142 Blade, 151 Meat grinding chamber, 152 Feeding channel. Detailed Implementation

[0040] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0041] like Figures 1 to 4 As shown, according to an embodiment of this disclosure, a meat grinder 100 is provided, including: a blade disc 110, with a support hole 111 and a feed hole 112 provided along the axial direction of the blade disc 110; a bushing 120 inserted into the support hole 111; and a spiral roller 130, with a rotating shaft 133 of the spiral roller 130 inserted into the bushing 120 for pushing food ingredients to the feed hole; wherein the contact area between the outer wall of the bushing 120 and the inner wall of the support hole 111 is smaller than the surface area of ​​the outer wall of the bushing 120.

[0042] The meat grinder 100 provided in this embodiment includes a cutter disc 110, a bushing 120, and a spiral roller 130. Along the axial direction of the cutter disc 110, the disc body 180 may have a support hole 111 and a feed hole 112. The bushing 120 can be inserted into the support hole 111 and can rotate relative to the support hole 111. When the spiral roller 130 rotates, it pushes the meat to be processed to the feed hole 112 of the cutter disc 110, where it is cut by the meat grinder blades 140 and discharged from the feed hole. Specifically, the rotating shaft 133 of the spiral roller 130 can be inserted into the bushing 120, and the bushing 120 and the rotating shaft 133 can rotate synchronously, allowing the spiral roller 130 to rotate relative to the cutter disc 110. By incorporating bushing 120, hard friction between the rotating shaft 133 and the support hole 111 of the cutter head 110 is avoided, preventing the formation of black contaminants from fine metal particles caused by wear, thus improving food safety, reducing wear on bushing 120 and cutter head 110, extending service life, and enhancing user experience. Simultaneously, the contact area between the outer wall of bushing 120 and the inner wall of support hole 111 is smaller than the surface area of ​​the outer wall of bushing 120, thereby reducing the contact area and friction between the inner walls of bushing 120 and support hole 111, ensuring smooth and synchronized rotation of bushing 120 and rotating shaft 133. Furthermore, even with slight radial oscillation of the spiral roller 130 during rotation, bushing 120 remains stably supported within the support hole 111 of cutter head 110, improving reliability.

[0043] It is understandable that the support hole 111 of the cutter head 110 can be located at the center of the cutter head 110, and the center lines of the support hole 111, the bushing 120, and the rotating shaft 133 are collinear, ensuring the support effect of the cutter head 110 on the rotating shaft 133. The rotating shaft 133 and the bushing 120 can rotate stably and synchronously, reducing the degree of shaking and improving stability. Multiple material passage holes 112 can be opened on the cutter head 110, and these holes are spaced apart and distributed around the periphery of the support hole 111 to ensure uniform material output. The spiral roller 130 pushes the food to the material passage holes 112, ensuring even distribution and uniform force on the meat grinder 140 during cutting. It should be noted that the support hole 111 can be used to support the rotating shaft 133 of the spiral roller 130, ensuring that the spiral roller 130 is always maintained in the correct working position, improving reliability.

[0044] For example, along the axial direction of the cutter head 110, the length of the bushing 120 may be less than the thickness of the cutter head 110 so that the bushing 120 is hidden inside the cutter head 110, or the length of the bushing 120 may be equal to the thickness of the cutter head 110 so that the end face of the bushing 120 is flush with the end face of the cutter head 110.

[0045] In some examples, the bushing 120 is fixed to the shaft 133.

[0046] Understandably, the bushing 120 can be fixedly connected to the rotating shaft 133 to ensure that the bushing 120 can rotate synchronously with the rotating shaft 133, preventing the rotating shaft 133 from falling off during rotation, ensuring that the bushing 120 can always play a protective role, preventing the rotating shaft 133 from contacting the cutter head 110 at the inner wall of the support hole 111, thereby preventing friction and falling metal chips, improving reliability, and if a small radial oscillation occurs during the rotation of the rotating shaft 133, the bushing 120 can restrict the radial degree of freedom of the rotating shaft 133, thereby reducing the oscillation amplitude.

[0047] In some examples, such as Figure 2 and Figure 5 As shown, the bushing 120 and the shaft 133 are interference-fitted; or the bushing 120 and the shaft 133 are threaded together.

[0048] It is understandable that there are multiple ways to fix the bushing 120 and the rotating shaft 133. Among them, the bushing 120 can have a certain degree of elasticity, and the inner diameter of the bushing 120 is smaller than the outer diameter of the rotating shaft 133. The bushing 120 can be fixed to the rotating shaft 133 by interference fit; or an internal thread can be provided on the inner side wall of the bushing 120, and a corresponding external thread can be provided on the outer side wall of the rotating shaft 133. The bushing 120 can be fixed to the rotating shaft 133 by the cooperation of the internal and external threads, so as to ensure that the rotating shaft 133 and the bushing 120 are installed in place. During the rotation of the rotating shaft 133, the bushing 120 can rotate synchronously with the rotating shaft 133, preventing the rotating shaft 133 from falling off during rotation, ensuring that the bushing 120 can always play a protective role, and preventing the rotating shaft 133 from contacting the cutter head 110 at the inner wall of the support hole 111, thereby avoiding friction and falling metal chips and improving reliability.

[0049] In some examples, there is a gap between the outer wall of the bushing 120 and the inner wall of the support hole 111, and the gap size is greater than or equal to 0.1 mm.

[0050] It is understandable that a gap can be provided between the outer wall of the bushing 120 and the support hole 111 so that the contact area between the outer wall of the bushing 120 and the inner wall of the support hole 111 is smaller than the surface area of ​​the outer wall of the bushing 120. This reduces the contact area between the bushing 120 and the support hole 111, reduces the friction between the inner wall of the support hole 111 and the outer wall of the bushing 120, and ensures that the rotating shaft 133 can drive the bushing 120 to move synchronously when the meat grinder 100 is operating, reducing rotational resistance and power loss. Specifically, the gap size should be greater than or equal to 0.1 mm to avoid the gap size being too small, which would result in a large friction between the bushing 120 and the support hole 111, affecting the synchronous rotation of the bushing 120 and the rotating shaft 133.

[0051] In some examples, the bushing 120 is provided with a mating section. When the bushing 120 is installed in the support hole 111, the mating section is located inside the support hole 111, and the outer side wall of the mating section contacts the inner side wall of the support hole 111.

[0052] It is understood that the bushing 120 may be entirely located within the support hole 111 or partially protrude from the support hole 111. The portion of the bushing 120 located inside the support hole 111 is a mating section, which is used for installation by mating with the support hole 111. Specifically, the outer wall of the mating section contacts the inner wall of the support hole 111 to ensure that the contact area between the outer wall of the mating section and the inner wall of the support hole 111 is smaller than the surface area of ​​the outer wall of the mating section. This reduces the contact area between the mating section and the support hole 111, reduces the friction between the mating section and the inner wall of the support hole 111, and ensures that the bushing 120 can rotate smoothly and synchronously with the rotating shaft 133. Furthermore, even if the spiral roller experiences slight radial oscillation during rotation, the mating section can still be stably supported within the support hole 111, improving reliability.

[0053] In some examples, the outer wall of the aforementioned mating section is spherical; and / or the outer wall of the aforementioned mating section has a protrusion for contacting the inner wall of the aforementioned support hole 111; and / or the surface of the aforementioned bushing 120 for contacting the aforementioned rotating shaft 133 is cylindrical.

[0054] It is understood that the shape of the outer wall of the mating section can be selected from various types, and the shape satisfies that the outer wall of the mating section partially contacts the inner wall of the support hole 111. For example, the outer wall of the mating section is generally spherical, and the spherical surface makes linear contact with the inner wall of the support hole 111, ensuring a small contact area between the mating section and the support hole 111, thus reducing the friction between them. Alternatively, the outer wall of the mating section can have a protrusion that presses against the inner wall of the support hole 111. Through the engagement of the protrusion and the inner wall of the support hole 111, the entire outer wall of the mating section avoids contact with the inner wall of the support hole 111, thereby reducing the friction between them. Multiple protrusions can be provided, staggered on the outer wall of the mating section, to ensure the stability of the connection between the protrusion and the inner wall.

[0055] Understandably, to ensure a secure connection between the bushing 120 and the rotating shaft 133, the inner wall profile of the bushing 120 that mates with the rotating shaft 133 can be identical in shape to the outer wall profile of the rotating shaft 133. This ensures a proper fit between the bushing 120 and the rotating shaft 133, guaranteeing the bushing 120's secure fixation to the rotating shaft 133. Simultaneously, the contact area between the outer wall profile of the mating section and the inner wall of the support hole 111 is smaller than the surface area of ​​the outer wall of the mating section. This reduces the friction between the bushing 120 and the inner wall of the support hole 111 on the outer wall of the bushing 120, ensuring that the rotating shaft 133 can drive the bushing 120 to move synchronously during the operation of the meat grinder 100, reducing rotational resistance and power loss.

[0056] In some examples, the internal holes of the aforementioned bushing 120 are blind holes or through holes.

[0057] Understandably, the bushing 120 may have internal holes into which the rotating shaft 133 can be inserted to securely connect the bushing 120 and the rotating shaft 133. The type of internal hole in the bushing 120 can be selected based on the design dimensions of the rotating shaft 133. Specifically, the internal hole in the bushing 120 may be a blind hole, with the length of the rotating shaft 133 inserted into the hole less than or equal to the depth of the hole; or the internal hole in the bushing 120 may be a through hole, with the length of the rotating shaft 133 inserted into the hole less than or equal to the depth of the hole; or the rotating shaft 133 may extend beyond the cutter head 110 on the side away from the rotating shaft 133, improving applicability.

[0058] In some examples, such as Figures 1 to 4 As shown, the meat grinder 100 also includes a blade 140, which is mounted on the spiral roller 130 and used to cut ingredients.

[0059] Understandably, the meat grinder 100 may also be equipped with blades 140, which can be mounted on the spiral roller 130. The spiral roller 130 can drive the blades 140 to rotate, thereby cutting the food. Specifically, during food processing, the spiral structure of the spiral roller 130 pushes the food towards the blade disc 110 as it rotates. The food is squeezed into the feed hole 112, and the spiral roller 130 drives the blades 140 to rotate, causing the blades 140 to cut the food and thus mince it.

[0060] In some examples, such as Figures 1 to 4 As shown, the aforementioned cutting tool 140 includes: a connecting portion 141; the aforementioned spiral roller 130 includes a spiral roller body 131, a mating portion 132, and the aforementioned rotating shaft 133; the aforementioned mating portion 132 is located between the aforementioned spiral roller body 131 and the aforementioned rotating shaft 133; the aforementioned connecting portion 141 is mounted on the aforementioned mating portion 132; and a blade 142 is disposed on the side of the aforementioned connecting portion 141, the cutting edge of the aforementioned blade 142 being parallel to the end face of the aforementioned cutter disc 110 near the connecting portion 141.

[0061] It is understood that the blade 140 may be provided with a connecting part 141 and a blade 142. Specifically, the spiral roller 130 may be provided with a spiral roller body 131, a mating part 132, and a rotating shaft 133. The spiral roller body 131 may be provided with a spiral structure, which, when rotating, can push the food towards the blade disc 110. The mating part 132 may be provided at one end of the spiral roller body 131 near the blade disc 110, and the rotating shaft 133 is connected to the end of the mating part 132 near the blade disc 110. The center lines of the mating part 132, the spiral roller body 131, and the rotating shaft 133 coincide to ensure rotational stability. Correspondingly, the connecting portion 141 of the tool 140 can be installed on the mating portion 132. The mating portion 132 restricts the degree of freedom of the connecting portion 141, allowing the connecting portion 141 to rotate synchronously with the mating portion 132. The connecting portion 141 may have a mounting hole, the diameter of which is larger than the outer diameter of the rotating shaft 133. Along the axial direction of the rotating shaft 133, the orthographic projection size of the mating portion 132 is larger than the orthographic projection size of the mounting hole. With this configuration, the rotating shaft 133 is inserted into the mounting hole and then into the bushing 120. When the tool 140 is in the working state, the mating portion 132 presses against the connecting portion 141, so that the connecting portion 141 is tightly attached to the tool disc 110. The blade 142 can be set on the side of the connecting part 141. The blade 142 is provided with a cutting edge, which cuts the food. Specifically, the cutting surface of the blade is parallel to the end face of the blade disc 110 near the connecting part 141 to ensure the cutting effect of the blade on the food, and to reduce the gap between the blade and the blade disc 110, reduce the volume of the cut food, ensure the meat grinding effect, and prevent the blade from scraping against the blade disc 110 during rotation, thus improving reliability.

[0062] It should be noted that the number of blades 142 can be multiple, and the multiple blades 142 are distributed at intervals on the side of the connecting part 141 to improve the cutting efficiency of the cutter 140. For example, the number of blades 142 can be four, and the included angle between each pair of adjacent blades 142 is 90°.

[0063] For example, the mating part 132 can be a non-circular part, and correspondingly, the mounting hole opened in the connecting part 141 can be a non-circular hole. The non-circular part can be inserted into the non-circular hole to ensure a tight fit, so that the spiral roller 130 and the cutter 140 can rotate synchronously.

[0064] In some examples, such as Figure 3 As shown, the bushing 120 protrudes from the end face of the cutter head 110 near the connecting portion 141 and is inserted into the connecting portion 141.

[0065] Understandably, along the axial direction of the cutter head 110, the length of the bushing 120 is greater than the thickness of the cutter head 110. This arrangement allows the bushing 120 to protrude from the end face of the cutter head 110 near the connecting portion 141. When the cutter 140 is installed, the portion of the bushing 120 protruding from the cutter head 110 can be inserted into the connecting portion 141. This arrangement also facilitates assembly when the shaft 133 of the spiral roller 130 is installed on the bushing 120; the portion of the bushing 120 protruding from the cutter head 110 guides the shaft 133 into the hole of the bushing 120.

[0066] In some examples, such as Figures 1 to 4 As shown, the meat grinder 100 further includes: a housing 150, the housing 150 being provided with a meat grinding chamber 151 and a feeding channel 152, the meat grinding chamber 151 and the feeding channel 152 being connected, the cutter disc 110 being disposed at the outlet end of the meat grinding chamber 151, and the spiral roller 130, the cutter 140 and the cutter disc 110 being arranged sequentially along the direction from the inlet end to the outlet end of the meat grinding chamber 151.

[0067] It is understandable that the meat grinder 100 may also include a housing 150. Specifically, the housing 150 may include a grinding chamber 151 and a feeding channel 152, which are interconnected. Food ingredients to be processed can be fed into the grinding chamber 151 through the feeding channel 152. The grinding chamber 151 has an inlet end and an outlet end. A drive unit for driving a spiral roller 130 may be installed at the inlet end. The spiral roller 130 is located inside the grinding chamber 151, and the drive unit drives the spiral roller 130 to rotate. This, through the spiral structure of the spiral roller body 131, moves the food ingredients to be processed fed through the feeding channel 152 towards the outlet end. The rotating shaft 133 of the spiral roller 130 faces the outlet end. Along the direction from the inlet end to the outlet end, a cutter 140 and a cutter disc 110 are sequentially arranged. A bushing 120 is inserted into the cutter disc 110. The mating part 132 of the spiral roller 130 is inserted into the connecting part 141 of the cutter 140, and the rotating shaft 133 is inserted into the bushing 120. When the spiral roller 130 rotates, it synchronously drives the cutter 140 and the bushing 120 to rotate. With this arrangement, the rotating spiral roller 130 pushes the food to be processed to the cutter disc 110. Under the action of the pushing force, the food is squeezed and deformed, entering the feed hole 112 of the cutter disc 110. The blade of the cutter 140 and the end of the cutter disc 110 facing the spiral roller 130 are in contact, so that the blade cuts off part of the food entering the feed hole 112, thus completing the food processing operation.

[0068] For example, such as Figure 1As shown, the feeding channel 152 can be located above the meat grinding chamber 151, so that the ingredients in the feeding channel 152 can fall into the meat grinding chamber 151 under the influence of their own gravity, without the need for an additional power source, thus simplifying the structure.

[0069] For example, such as Figure 1 As shown, a disc 180 can be provided above the feeding channel 152 of the housing 150. The disc 180 is connected to the feeding channel 152. With this configuration, when performing meat grinding operations, the ingredients to be processed can be placed in the disc 180 first, and then some of the ingredients can be fed into the feeding channel 152. The ingredients are processed into fillings by the cooperation of the spiral roller 130, the blade 140 and the blade disc 110. The disc 180 can continuously supply ingredients to the feeding channel 152, ensuring that the meat grinding operation can continue, improving processing efficiency, facilitating the user to feed ingredients, and improving the user experience.

[0070] In some examples, such as Figures 1 to 4 As shown, the meat grinder 100 further includes a fixing member 160 disposed in the housing 150 for fixing the blade 110 to the outlet end of the meat grinding chamber 151.

[0071] Understandably, the meat grinder 100 may also be equipped with a fixing member 160. Specifically, the fixing member 160 may be an annular member, fitted onto the outer wall of the outlet end of the housing 150. Along the axial direction of the cutter disc 110, the inner diameter of the end of the annular member furthest from the cutter disc 110 is smaller than the outer diameter of the cutter disc 110, thereby preventing the cutter disc 110 from detaching from the outlet end of the housing 150. Simultaneously, the inner wall of the outlet end of the housing 150 may be provided with a protrusion, the protrusion facing the inside of the meat grinding chamber 151. The protrusion and the fixing member 160 together restrict the freedom of the cutter disc 110, ensuring the cutter disc 110 is fixed in position within the housing 150 and improving stability.

[0072] For example, the fastener 160 can be connected to the outer wall of the outlet end of the housing 150 via a threaded connection. Specifically, the inner wall of the end of the fastener 160 facing the housing 150 has an internal thread, and the outer wall of the outlet end of the housing 150 has an external thread. The internal thread is screwed onto the external thread to fix the fastener 160 to the outlet end of the housing 150, facilitating the installation and removal of the fastener 160 and improving the user experience. Furthermore, multiple protrusions can be provided on the outer wall of the fastener 160 to facilitate the user's grip and screwing operation. Three protrusions can be provided, and the included angle between any two adjacent protrusions is 60°.

[0073] In some examples, such as Figure 1 As shown, the meat grinder 100 further includes a drive unit 170, and the spiral roller 130 is connected to the drive unit 170.

[0074] It is understandable that the meat grinder 100 may also be equipped with a drive unit 170. Specifically, the drive unit 170 may be the main unit of the meat grinder 100, the inlet end of the housing 150 may be connected to the main unit, and the spiral roller body 131 may be connected to the power output shaft of the drive unit 170. By starting the drive unit 170, the power output shaft rotates to drive the spiral roller 130 to rotate, which in turn drives the blade 140 to rotate to cut the ingredients.

[0075] For example, the main unit may be equipped with an adjustment knob, which can control the output power of the drive unit 170, thereby adjusting the speed of the power output shaft to suit various working conditions.

[0076] In some examples, the hardness of the bushing 120 is lower than that of the cutter head 110.

[0077] Understandably, the hardness of the bushing 120 needs to be lower than that of the cutter head 110 in order to avoid hard contact between the bushing 120 and the cutter head 110 when the bushing 120 rotates relative to the cutter head 110, which would cause wear on the cutter head 110 and improve the service life of the cutter head 110. In addition, the bushing 120 can be used as a consumable part for easy replacement and has a low replacement cost.

[0078] In some examples, the material of the aforementioned bushing 120 includes POM (Polyoxymethylene) plastic.

[0079] Understandably, bushing 120 can be made of POM plastic, which has good physical, mechanical and chemical properties, good friction resistance and self-lubricating properties, thereby improving the service life of bushing 120 and reducing friction between bushing 120 and support hole 111.

[0080] In this disclosure, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0081] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0082] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0083] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A meat mincer, characterised in that, The meat grinder comprises: a cutter disc, which is provided with a supporting hole and a material passing hole along an axial direction of the cutter disc; a shaft sleeve, which is inserted into the supporting hole; a spiral roller, a rotating shaft of which is inserted into the shaft sleeve, for pushing food materials to the material passing hole; wherein a contact area between an outer sidewall of the shaft sleeve and an inner sidewall of the supporting hole is less than a surface area of the outer sidewall of the shaft sleeve.

2. The meat grinder according to claim 1, wherein the shaft sleeve is fixed to the rotating shaft.

3. The meat grinder according to claim 2, wherein the shaft sleeve and the rotating shaft are in interference fit; or the shaft sleeve and the rotating shaft are threadedly connected.

4. The meat grinder according to claim 1, wherein a gap is present between the outer sidewall of the shaft sleeve and the inner sidewall of the supporting hole, and a size of the gap is greater than or equal to 0.1 mm.

5. The meat grinder according to claim 1, wherein the shaft sleeve is provided with a matching section, which is located inside the supporting hole when the shaft sleeve is installed in the supporting hole, and an outer sidewall of the matching section partially contacts an inner sidewall of the supporting hole.

6. The meat grinder according to claim 5, wherein the outer sidewall of the matching section is in a spherical surface; and / or the outer sidewall of the matching section is formed with a protruding part for contacting the inner sidewall of the supporting hole; and / or a surface of the shaft sleeve for abutting the rotating shaft is in a cylindrical surface.

7. The meat grinder according to claim 1, wherein an inner hole of the shaft sleeve is in a blind hole or a through hole.

8. A meat mincer according to any one of claims 1 to 7, characterised in that, Further comprising: a cutter, which is installed on the spiral roller, for cutting food materials.

9. The meat grinder of claim 8, wherein, The cutter comprises: a connecting part, the spiral roller comprises a spiral roller body, a matching part between the spiral roller body and the rotating shaft, and the connecting part is installed on the matching part; a blade, which is arranged on a side of the connecting part, and a cutting edge of the blade is parallel to an end surface of the cutter disc close to the connecting part.

10. The meat grinder according to claim 9, wherein the shaft sleeve protrudes from the end surface of the cutter disc close to the connecting part and is inserted into the connecting part.

11. The meat grinder of claim 8, wherein, Further comprising: a housing, which is provided with a meat grinding cavity and a feeding channel, the meat grinding cavity and the feeding channel are in communication, the cutter disc is arranged at an outlet end of the meat grinding cavity, and the spiral roller, the cutter and the cutter disc are arranged in sequence along a direction from an inlet end to the outlet end of the meat grinding cavity.

12. The meat grinder of claim 11, wherein, Further comprising: a fixing part, which is arranged on the housing, for fixing the cutter disc at the outlet end of the meat grinding cavity.

13. The meat grinder of claim 8, wherein, Further comprising: a driving part, the spiral roller is connected to the driving part.

14. The meat grinder according to claim 8, wherein a hardness of the shaft sleeve is lower than a hardness of the cutter disc.

15. The meat grinder according to claim 8, wherein a material of the shaft sleeve comprises POM plastic.

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