A sealing assembly for a meat grinder

Abstract

This utility model discloses a sealing component for a meat grinder, including a meat grinder body, a wear-resistant metal sheet, and a sealing ring. The meat grinder body has a meat grinder screw inside its grinding chamber, and a wear-resistant metal sheet is installed on the end face of the corresponding shaft hole. The sealing ring is fitted onto one end of the meat grinder screw and abuts against the wear-resistant metal sheet to form a seal. One end of the meat grinder screw has a transmission engagement part with a circumferential anti-rotation structure, and the inner ring of the sealing ring has a limiting engagement part that meshes with it, so that the sealing ring rotates synchronously with the meat grinder screw, preventing relative rotation. Thus, the wear-resistant metal sheet on the end face of the shaft hole of the meat grinder body, and the anti-rotation engagement between the meat grinder screw and the sealing ring, ensure that the sealing ring will not rotate relative to the meat grinder screw during operation, nor will it directly rub against the easily worn parts of the meat grinder body; the sealing ring only contacts the wear-resistant metal sheet, avoiding the generation of black powder due to friction in traditional structures, effectively improving the durability of the sealing part and the hygiene and safety of food processing.

Description

Technical Field

[0001] This utility model relates to the field of meat grinder technology, and specifically to a sealing component for a meat grinder. Background Technology

[0002] Existing meat grinders typically have a grinding chamber within the grinder body, where a grinding screw is installed for grinding meat. One end of the grinding screw serves as the power input end, and a sealing ring is installed between it and the grinding chamber to prevent material from the grinding chamber from seeping into the power drive mechanism, ensuring safe operation of the equipment.

[0003] However, in existing structures, although the sealing ring is usually made of a material with a certain degree of wear resistance, it is mostly installed in a sleeve-type configuration, failing to form a reliable anti-rotation fit with the meat grinder screw. Therefore, during the operation of the meat grinder screw, the sealing ring experiences continuous relative rotational friction with the inner wall of the meat grinder chamber and / or the meat grinder screw, leading to excessive wear on the sealing ring and its contact surfaces. Simultaneously, during this relative rotational wear, the areas in contact with the sealing ring are prone to generating fine metal shavings, commonly known as "black powder," during friction. These shavings can fall into the food, causing food contamination and affecting food safety. Utility Model Content

[0004] To overcome the defects described in the prior art, this utility model provides a sealing component for a meat grinder. By setting a wear-resistant metal sheet on the end face of the shaft hole of the meat grinder body and forming an anti-rotation fit between the meat grinder screw and the sealing ring, the sealing ring will not rotate relative to the meat grinder screw during operation, nor will it directly rub against the easily worn parts of the meat grinder body. The sealing ring only contacts the wear-resistant metal sheet, thereby avoiding the generation of black powder due to friction in traditional structures, effectively improving the durability of the sealing parts and the hygiene and safety of food processing.

[0005] The technical solution adopted by this utility model to solve its problem is: A sealing assembly for a meat grinder, comprising: The meat grinder body has a meat grinding chamber, a meat grinding screw is rotatably installed inside the meat grinding chamber, and a shaft hole end face is provided inside the meat grinding chamber; A wear-resistant metal sheet is disposed on the end face of the shaft hole; A sealing ring is fitted onto one end of the meat grinder screw and abuts against the wear-resistant metal sheet to form a seal; The meat grinder screw has a transmission engagement part at one end for torque transmission, and the transmission engagement part has an anti-rotation engagement structure distributed circumferentially; the inner ring of the sealing ring has a limiting engagement part that meshes with the anti-rotation engagement structure, so that the sealing ring rotates synchronously with the meat grinder screw when it is sleeved on one end of the meat grinder screw through the meshing engagement, and prevents the sealing ring from rotating relative to the meat grinder screw.

[0006] Furthermore, the anti-rotation mating structure is a spline structure, and the limiting mating part is an internal tooth structure that mates with the spline structure, so as to achieve synchronous rotation of the sealing ring and the meat grinder screw through the spline shape mating.

[0007] Furthermore, one end of the meat grinder screw is provided with a first groove on the spline structure, and the sealing ring is engaged in the first groove to restrict the sealing ring from coming out axially.

[0008] Furthermore, the meat grinder chamber is provided with a shaft hole, the spline structure passes through the shaft hole, and one end of the meat grinder screw is provided with a step, the step and the end face of the shaft hole squeeze the sealing ring to achieve a seal.

[0009] Furthermore, a second groove is provided on the end face of the shaft hole, and the wear-resistant metal sheet is engaged in the second groove.

[0010] Furthermore, the edge of the sealing ring is provided with an annular protrusion, which abuts against the wear-resistant metal sheet.

[0011] Furthermore, the sealing ring is provided with a boss, and the internal tooth structure is formed within the boss.

[0012] Furthermore, the edge of the wear-resistant metal sheet is provided with a flange, which passes through the shaft hole and is fixedly fitted to the hole wall of the shaft hole.

[0013] Furthermore, it also includes a nut, one end of the meat grinder body is provided with an external thread, the nut is screwed into the external thread, and during the screwing process, it drives the other end of the meat grinder screw to move towards one end of the meat grinder screw so that the sealing ring abuts against the wear-resistant metal sheet.

[0014] Furthermore, the other end of the meat grinder screw is provided with a locking block, on which a blade can be detachably locked.

[0015] In summary, this utility model has the following technical effects: 1. The sealing component for a meat grinder of this utility model, by setting a wear-resistant metal sheet on the end face of the shaft hole of the meat grinder body and forming an anti-rotation fit between the meat grinder screw and the sealing ring, ensures that the sealing ring will not rotate relative to the screw during operation, nor will it directly rub against easily worn parts of the machine body; the sealing ring only contacts the wear-resistant metal sheet, thereby avoiding the black powder generated by friction in traditional structures, effectively improving the durability of the sealing parts and the hygiene and safety of food processing.

[0016] 2. This utility model relates to a sealing component for a meat grinder. By setting an anti-rotation mating structure at the end of the meat grinder screw and providing a limiting mating part that meshes with the inner ring of the sealing ring, the sealing ring can rotate synchronously with the meat grinder screw, eliminating relative rotation. Since the sealing ring eliminates rotational friction relative to the meat grinder screw or the inner wall of the grinding chamber, it prevents the generation of debris or black powder due to friction, avoiding the risk of black powder entering the food, thereby effectively improving the hygiene, safety, and service life of the meat grinder.

[0017] 3. The sealing component for meat grinder of this utility model, by constructing a reliable anti-rotation mating mechanism and optimizing the force and mating method of the sealing ring, not only improves the service life of the sealing structure, but also effectively reduces the generation of abrasive debris, thereby improving the food safety and operational stability of the meat grinder. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the sealing assembly for a meat grinder according to the present invention; Figure 2 This is a cross-sectional schematic diagram of the sealing assembly for the meat grinder of this utility model; Figure 3 for Figure 2 Enlarged diagram of section A in the middle; Figure 4 This is a schematic diagram of the meat grinder body in the sealing assembly for the meat grinder of this utility model; Figure 5 This is a schematic diagram of the meat-grinding screw in the sealing assembly for the meat grinder of this utility model; Figure 6 This is a schematic diagram of the wear-resistant metal sheet in the sealing assembly for the meat grinder of this utility model; Figure 7 This is a schematic diagram of the sealing ring in the sealing assembly for the meat grinder of this utility model from one perspective; Figure 8 This is a schematic diagram of the sealing ring in the sealing assembly for the meat grinder of this utility model from a second perspective. Figure 9 This is a schematic diagram of the connection between the sealing component and the machine body of the meat grinder according to this utility model; Figure 10 This is a schematic diagram of the structure of the sealing assembly for the meat grinder of this utility model.

[0019] The meanings of the reference numerals in the attached figures are as follows: 1. Meat grinder body; 11. Meat grinder bin; 12. Shaft hole end face; 121. Second groove; 13. Shaft hole; 14. External thread; 15. Feeding bin; 16. Insertion groove; 17. Locking groove; 2. Meat grinder screw; 21. Spline structure; 22. Step; 221. Relief groove; 23. First groove; 24. Snap-fit ​​block; 3. Wear-resistant metal sheet; 31. Flanged edge; 4. Sealing ring; 41. Boss; 411. Internal tooth structure; 42. Annular protrusion; 5. Cutting head; 6. Orifice plate; 7. Nut; 8. Feeding bin; 9. Machine body; 91. Transmission component; 92. Insertion block; 93. Locking pin. Detailed Implementation

[0020] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element 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 utility model.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] like Figure 1-10A sealing assembly for a meat grinder is shown, comprising a meat grinder body 1, a wear-resistant metal sheet 3, and a sealing ring 4. The meat grinder body 1 has a meat grinding chamber 11, within which a meat grinder screw 2 is rotatably mounted. The meat grinder chamber 11 also has a shaft hole end face 12. The wear-resistant metal sheet 3 is mounted on the shaft hole end face 12, providing a hard, wear-resistant contact interface for the sealing ring 4. This ensures that the sealing ring 4 maintains a stable friction state even when the meat grinder screw 2 is rotating, preventing the generation of black powder. The sealing ring 4 is fitted onto one end of the meat grinder screw 2 and forms a seal with the wear-resistant metal sheet 3. The metal material of the wear-resistant metal sheet 3 reduces wear and black powder generation caused by the relatively soft material of the shaft hole end face 12, while also improving sealing stability and service life. The meat grinder screw 2 has a transmission engagement part at one end for torque transmission, which has an anti-rotation engagement structure distributed circumferentially. The inner ring of the sealing ring 4 has a limit engagement part that meshes with the anti-rotation engagement structure to ensure that the sealing ring 4 rotates synchronously with the meat grinder screw 2, preventing relative rotation that would cause wear and black powder generation at the contact point between the meat grinder screw 2 and the sealing ring 4. This structure also prevents thermal wear caused by slippage of the sealing ring 4, while maintaining the sealing lip on the sealing ring 4 in a stable position, making the sealing effect more durable and reliable.

[0024] In this embodiment, the wear-resistant metal sheet 3 can be made of food-grade stainless steel, such as 304 or 316 stainless steel, to ensure that the sealing surface is wear-resistant and corrosion-resistant, and meets the hygiene and safety requirements of food processing, while improving the service life and reliability of the sealing assembly.

[0025] See Figure 5 The anti-rotation mating structure adopts a spline structure 21, while the limiting mating part of the sealing ring 4 adopts an internal tooth structure 411 that matches the spline. Reliable torque transmission is achieved through the meshing of the spline and the internal teeth. This meshing form can adapt to the elasticity of the sealing ring 4 material, allowing the internal teeth to deform slightly and spring back during press-fitting, thereby achieving a more stable clamping effect and ensuring that it will not fail due to material fatigue after long-term operation.

[0026] To prevent the sealing ring 4 from axially dislodging, a first groove 23 is preferably provided at one end of the meat grinder screw 2, into which the sealing ring 4 can be engaged. This engagement method provides reliable axial positioning, ensuring the sealing ring 4 remains stable under high-frequency vibration or impact loads, thus preventing seal failure due to axial displacement. Furthermore, when disassembling the meat grinder screw 2, the sealing ring 4 remains within the first groove 23, preventing it from directly detaching or being lost, facilitating assembly and maintenance.

[0027] See Figure 4The meat grinder chamber 11 has an internal shaft hole 13, through which a spline structure 21 passes. The end of the meat grinder screw 2 also has a step 22, which, together with the end face of the shaft hole 13, presses the sealing ring 4. This structure allows the sealing ring 4 to obtain a more uniform compression force, maintaining reliable sealing performance even under conditions of high food moisture or high oil content, preventing material backflow or leakage. Preferably, the spline end located on the step 22 also has a relief groove 221. This structure prevents the sealing ring 4 from being scratched by the sharp edge of the end during assembly, and also ensures a more complete fit between the sealing ring 4 and the stepped area at the end of the meat grinder screw 2, further improving the sealing effect.

[0028] Furthermore, a second groove 121 is provided on the shaft hole end face 12, into which the wear-resistant metal sheet 3 is engaged. Through the structure of the second groove 121, the wear-resistant metal sheet 3 can be stably fitted to the shaft hole end face 12, preventing displacement and ensuring the flatness and stability of the sealing contact interface. Preferably, the edge of the wear-resistant metal sheet 3 is provided with a flange 31, which passes through the shaft hole 13 and fits tightly against the hole wall, providing additional radial support to the wear-resistant metal sheet 3, thereby improving its anti-warping ability under stress conditions and making the sealing interface more reliable. Simultaneously, the fit between the flange 31 and the hole wall also provides wear-resistant protection to the hole wall, preventing the sealing ring 4 from directly rubbing against the hole wall during rotation, thereby reducing black powder generation and improving the hygiene and safety of food processing and the sealing life.

[0029] In other embodiments, the wear-resistant metal sheet 3 can be fixedly installed on the end face 12 of the shaft hole by means of snap-fit, riveting or interference fit, so that it maintains a stable position during the operation of the meat grinder screw 2, avoids relative rotation of the wear-resistant metal sheet 3, thereby further reducing the wear between the sealing ring 4 and the wear-resistant metal sheet 3, and improving the sealing reliability and service life.

[0030] See Figure 7-8 The sealing ring 4 has an annular protrusion 42 on its edge, which abuts against the wear-resistant metal sheet 3. By increasing the contact area and optimizing the contact pressing shape, the sealing effect can be further improved, and local wear on the edge of the sealing ring 4 can be effectively reduced. The sealing ring 4 also has a boss 41, and an internal tooth structure 411 is formed in the boss 41. This structure increases the material thickness and structural strength of the internal tooth meshing part, avoiding tooth breakage due to long-term load; on the other hand, it also makes it easier to position the sealing ring 4 during assembly, improving assembly efficiency.

[0031] Furthermore, it also includes a nut 7. One end of the meat grinder body 1 is provided with an external thread 14. The nut 7 is screwed into the external thread 14. The axial clamping force of the nut 7 drives the other end of the meat grinder screw 2 to move towards the transmission end, so that the sealing ring 4 always remains in close contact with the wear-resistant metal sheet 3. This structure not only improves the controllability of the sealing pre-pressure, but also makes it easier for users to adjust the sealing pressure during later maintenance, so that the sealing performance of the meat grinder can still be restored after long-term use.

[0032] In addition, a snap-fit ​​block 24 is provided at the other end of the meat grinder screw 2, and the detachable blade head 5 is snapped onto the snap-fit ​​block 24, making it easier to install, remove and clean the blade head 5, and reducing the cost of replacing the blade head 5, which helps to improve the maintenance convenience of the whole machine.

[0033] In this embodiment, a perforated plate 6 is also provided on the front side of the cutter head 5, which is used to directionally extrude the meat that has been minced by the cutter head 5 into the meat grinding chamber 11, so that the minced meat particles are more uniform in size and the discharge is smoother, thereby improving the mincing efficiency and consistency of taste. For example, the perforated plate 6 can be selected with different hole diameters according to different ingredients to adapt to various processing needs such as coarse mincing and fine mincing.

[0034] See Figure 2 It also includes a feeding bin 8 for discharging materials, and a conveying bin 15 connected to and located above the meat grinding bin 11 is also provided on the meat grinding body 1. The feeding bin 8 is located on the top of the conveying bin 15 and connected to the conveying bin 15.

[0035] See Figure 9-10 In another embodiment, the device may also include a body 9 and a drive assembly disposed on the body 9. The drive assembly includes a drive motor (not shown in the figure) and a transmission component 91 that is connected to the output end of the motor. The transmission component 91 can be inserted into the spline structure 21 at the end of the meat grinder screw 2. In use, the power of the drive motor can be directly transmitted to the meat grinder screw 2, improving the overall power transmission efficiency and reducing energy loss.

[0036] In other embodiments, the transmission component 91 may be made of die-cast aluminum alloy or reinforced with engineering plastics to reduce the overall weight of the machine.

[0037] A plug-in assembly, including a plug-in slot 16 and a plug-in block 92, can be provided between the meat grinder body 1 and the machine body 9. One of the plug-in slot 16 and the plug-in block 92 is located on the meat grinder body 1, and the other is located on the machine body 9. The meat grinder body 1 and the machine body 9 are quickly installed via plug-in connection. This structure allows for quick disassembly of the meat grinder body 1, facilitating cleaning of the internal structure by the user. One of the plug-in slot 16 and the plug-in block 92 can be equipped with a locking block, and the other with a locking groove. When plugged in and rotated into place, the locking structure provides an anti-loosening function, ensuring a stable connection of the meat grinder body 1 during operation.

[0038] To further enhance structural safety, a locking component can be installed, including a locking groove 17 and a locking pin 93. One of the locking groove 17 and the locking pin 93 is installed on the meat grinder body 1, and the other is installed on the machine body 9. After the meat grinder body 1 and the machine body 9 are assembled, the locking pin 93 is inserted into the locking groove 17 to achieve a double locking structure. This can effectively prevent the equipment from falling off due to vibration under high torque conditions, thereby improving the overall operating safety of the machine.

[0039] In other embodiments, the locking pin 93 may have an elastic structure for automatic locking, improving user convenience.

[0040] In summary, the sealing component for the meat grinder of this utility model, by setting a wear-resistant metal sheet 3 on the shaft hole end face 12 of the meat grinder body 1 and forming an anti-rotation fit between the meat grinder screw 2 and the sealing ring 4, ensures that the sealing ring 4 will not rotate relative to the meat grinder screw 2 during operation, nor will it directly rub against the easily worn parts of the meat grinder body 1; the sealing ring 4 only contacts the wear-resistant metal sheet 3, thereby avoiding the black powder generated by friction in the traditional structure, effectively improving the durability of the sealing part and the hygiene and safety of food processing.

[0041] This invention relates to a sealing assembly for a meat grinder. By providing a spline structure 21 at the end of the meat grinder screw 2 and an internal tooth structure 411 meshing with it on the inner ring of the sealing ring 4, the sealing ring 4 can rotate synchronously with the meat grinder screw 2, eliminating relative rotation. Since the sealing ring 4 eliminates rotational friction relative to the meat grinder screw 2 or the inner wall of the meat grinder chamber 11, it prevents the generation of debris or black powder due to friction, avoiding the risk of black powder entering the food and thus effectively improving the hygiene, safety, and service life of the meat grinder.

[0042] This utility model relates to a sealing component for a meat grinder. By constructing a reliable anti-rotation mating mechanism and optimizing the force and mating method of the sealing ring 4, it not only improves the service life of the sealing structure but also effectively reduces the generation of abrasive debris, thereby enhancing the food safety and operational stability of the meat grinder. The stable contact between the wear-resistant metal sheet 3 and the sealing ring 4 ensures uniform force at the sealing interface, maintains good sealing pre-pressure, prevents leakage or material seepage, improves sealing reliability, and makes the overall operation of the meat grinder more stable and its service life longer.

[0043] This utility model relates to a sealing component for meat grinders. Through a dual design of "wear-resistant metal sheet + anti-rotation structure", this utility model significantly reduces wear on the sealing parts, avoids the generation of black powder and the risk of it entering the food, and comprehensively improves the sealing durability, food safety and operational stability of the meat grinder.

[0044] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0045] It should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element 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 utility model.

[0046] Furthermore, in the description of this utility model, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0047] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A sealing assembly for a meat grinder, characterized in that, include: The meat grinder body has a meat grinding chamber, a meat grinding screw is rotatably installed inside the meat grinding chamber, and a shaft hole end face is provided inside the meat grinding chamber; A wear-resistant metal sheet is disposed on the end face of the shaft hole; A sealing ring is fitted onto one end of the meat grinder screw and abuts against the wear-resistant metal sheet to form a seal; The meat grinder screw has a transmission engagement part at one end for torque transmission, and the transmission engagement part has an anti-rotation engagement structure distributed circumferentially; the inner ring of the sealing ring has a limiting engagement part that meshes with the anti-rotation engagement structure, so that the sealing ring rotates synchronously with the meat grinder screw when it is sleeved on one end of the meat grinder screw through the meshing engagement, and prevents the sealing ring from rotating relative to the meat grinder screw.

2. The sealing assembly for a meat grinder according to claim 1, characterized in that, The anti-rotation mating structure is a spline structure, and the limiting mating part is an internal tooth structure that mates with the spline structure, so as to achieve synchronous rotation of the sealing ring and the meat grinder screw through the spline shape mating.

3. The sealing assembly for a meat grinder according to claim 2, characterized in that, One end of the meat grinder screw is provided with a first groove on the spline structure, and the sealing ring is engaged in the first groove to prevent the sealing ring from coming out axially.

4. The sealing assembly for a meat grinder according to claim 3, characterized in that, The meat grinder chamber has a shaft hole, the spline structure passes through the shaft hole, and one end of the meat grinder screw has a step. The step and the end face of the shaft hole squeeze the sealing ring to achieve a seal.

5. The sealing assembly for a meat grinder according to claim 1, characterized in that, A second groove is provided on the end face of the shaft hole, and the wear-resistant metal sheet is engaged in the second groove.

6. The sealing assembly for a meat grinder according to claim 1, characterized in that, The edge of the sealing ring is also provided with an annular protrusion, which abuts against the wear-resistant metal sheet.

7. The sealing assembly for a meat grinder according to claim 3, characterized in that, The sealing ring has a boss, and the internal tooth structure is formed within the boss.

8. The sealing assembly for a meat grinder according to claim 4, characterized in that, The edge of the wear-resistant metal sheet is provided with a flange, which passes through the shaft hole and is fixed to the hole wall.

9. The sealing assembly for a meat grinder according to claim 1, characterized in that, It also includes a nut, one end of the meat grinder body is provided with an external thread, the nut is screwed into the external thread, and during the screwing process, it drives the other end of the meat grinder screw to move towards one end of the meat grinder screw so that the sealing ring abuts against the wear-resistant metal sheet.

10. The sealing assembly for a meat grinder according to claim 1, characterized in that, The other end of the meat grinder screw is provided with a locking block, on which a blade can be detachably locked.

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