Mechanical bearing for food processing

Abstract

The invention relates to the technical field of bearings, and discloses a mechanical bearing for food processing, which comprises a bearing outer ring and a bearing inner ring, the inner wall of the bearing outer ring is provided with an outer ring guide groove, the outer wall of the bearing inner ring is provided with an inner ring guide groove, a ball is arranged between the inner ring guide groove and the outer ring guide groove, the outer side of the ball is provided with a retainer, and the outer ring guide groove is provided with an inner ring guide groove. An adapter sleeve is arranged on the inner wall of the bearing inner ring, inner dustproof covers are arranged on the two sides of the interior of the bearing outer ring, outer dustproof covers are fixed to the outer walls of the inner dustproof covers, and threaded sealing rings are arranged on the two sides of the adapter sleeve. And the sealing ring and the outer dustproof cover are sealed and protected again, the sealing protection effect of the whole bearing is further improved, leakage of lubricating oil in the bearing in the food processing process is effectively avoided, and the sealing protection effect of the bearing in the food processing process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bearings, in particular to a mechanical bearing for food processing. Background Art

[0002] The main function of bearings is to support rotating parts so that they can rotate smoothly and efficiently. In food processing equipment, such as mixers, conveyor belts, packaging machines, etc., bearings support various rotating parts such as mixing shafts, rollers, transmission shafts, etc., ensuring that they can rotate stably to complete various tasks in the food processing process.

[0003] The existing Chinese patent (CN203585072U) discloses a ball bearing, including an inner ring, an outer ring, a plurality of balls and a cage. The cage is used to keep the balls from contacting each other and maintain the correct position, and also prevent the balls from falling off when the bearing is installed. In actual applications, the cage does not directly bear the bearing load. In this embodiment, the cage is a corrugated steel cage, which has low noise, long life, is suitable for high speed, and has excellent temperature resistance. An inner ring groove is provided on the outer surface of the inner ring, and an outer ring groove is provided on the inner surface of the outer ring. Each of the balls is arranged between the inner ring groove and the outer ring groove. The contact points between the balls and the inner ring groove and the outer ring groove support the load borne by the bearing with their groove surfaces.

[0004] In the existing bearing application practice, in order to enhance its anti-fatigue performance and prolong its service life, lubricating oil or grease is usually injected into the bearing for lubrication. However, due to the slight gap between the inner ring, outer ring and dust cover of the bearing, the lubricating oil or grease often leaks easily. Once these lubricants leak out, they are likely to contaminate food, thus posing a threat to the safety of food processing. For this purpose, a mechanical bearing for food processing is provided. Summary of the invention

[0005] The object of the present invention is to provide a mechanical bearing for food processing to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A mechanical bearing for food processing, comprising: a bearing outer ring and a bearing inner ring, the inner wall of the bearing outer ring is provided with an outer ring guide groove, the outer wall of the bearing inner ring is provided with an inner ring guide groove, a ball is provided between the inner ring guide groove and the outer ring guide groove, a retaining frame is provided on the outside of the ball, a clamping sleeve is provided on the inner wall of the bearing inner ring, inner dust covers are provided on both sides of the inner part of the bearing outer ring, an outer dust cover is fixed to the outer wall of the inner dust cover, threaded sealing rings are provided on both sides of the clamping sleeve, a gasket is provided between the threaded sealing ring and the outer dust cover, and a sealing ring is provided on one side of the gasket.

[0007] As a further explanation of the present invention, outer annular grooves cooperating with the inner dust cover are formed on both sides of the inner wall of the outer ring of the bearing, and inner annular grooves cooperating with the inner dust cover are formed on both sides of the inner wall of the inner ring of the bearing.

[0008] As a further explanation of the present invention, an upper convex ring is provided on one side of the top of the inner dust cover, and lower convex rings are provided on both sides of the bottom of the inner dust cover.

[0009] As a further illustration of the present invention, the adapter sleeve is C-shaped, and both ends of the adapter sleeve are provided with external threads that match with the threaded sealing ring.

[0010] As a further illustration of the present invention, the sealing ring has a hook-shaped cross section, and an annular groove matching the sealing ring is formed on one side of the inner wall of the outer dust cover.

[0011] As a further illustration of the present invention, the sealing ring and the outer dust cover are clearance-fitted.

[0012] As a further explanation of the present invention, the inner ring of the threaded sealing ring is provided with an internal thread that matches with the thread on the adapter sleeve.

[0013] As a further illustration of the present invention, the outer width of the outer dust cover is greater than the distance between the bearing outer ring and the bearing inner ring.

[0014] As a further illustration of the present invention, the outer wall of the adapter sleeve abuts against the inner wall of the bearing inner ring.

[0015] As a further explanation of the present invention, there are multiple balls, and the multiple balls are evenly arranged and rotatably connected between the inner ring of the bearing and the outer ring of the bearing. There are two outer ring guide grooves, and the two outer ring guide grooves are symmetrically distributed on the inner ring of the bearing outer ring. There are two inner ring guide grooves, and the two inner ring guide grooves are symmetrically distributed on the outer ring of the bearing inner ring.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes that when a mechanical bearing for food processing is used, an inner dust cover is provided between the bearing outer ring and the bearing inner ring, thereby achieving preliminary sealing of the interior of the bearing. At the same time, an outer dust cover with a larger size is provided on the inner dust cover, and a second sealing protection is provided for the area between the bearing inner ring and the bearing outer ring. At the same time, an adapter sleeve is installed on the bearing inner ring, and sealing rings, washers and threaded sealing rings are provided on both sides of the adapter sleeve, so that the sealing ring and the outer dust cover are sealed again, thereby further improving the sealing protection effect of the entire bearing, effectively avoiding leakage of lubricating oil inside the bearing during food processing, and improving the sealing protection effect of the bearing during food processing.

[0017] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An exploded view of a food processing mechanical bearing of the present invention; Figure 2 A three-dimensional diagram of a food processing mechanical bearing of the present invention; Figure 3 It is a main cross-sectional view of a mechanical bearing for food processing of the present invention; Figure 4 for Figure 3 The enlarged structural diagram at A in the middle; Figure 5 A half-section view of a food processing mechanical bearing of the present invention; Figure 6 for Figure 5 The enlarged structural diagram at B in the middle; Figure 7 This is a schematic diagram of the structure of the outer ring of a mechanical bearing for food processing according to the present invention; Figure 8 This is a schematic diagram of the bearing inner ring connection structure of a food processing mechanical bearing of the present invention; Fig. 9 It is a front view of a mechanical bearing for food processing of the present invention; Fig.10 The figure is a left side view of a mechanical bearing for food processing according to the present invention.

[0019] In the figure: 1. bearing outer ring; 2. bearing inner ring; 3. outer ring guide groove; 4. inner ring guide groove; 5. ball; 6. cage; 7. inner dust cover; 8. outer dust cover; 9. adapter sleeve; 10. threaded sealing ring; 11. gasket; 12. sealing ring; 13. upper convex ring; 14. lower convex ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Example 1: Please refer to Figure 1-Figure 4The present invention provides a technical solution: a mechanical bearing for food processing, comprising: a bearing outer ring 1 and a bearing inner ring 2. The bearing outer ring 1 and the bearing inner ring 2 are the main structures of the bearing, which jointly support and fix the mechanical parts and allow relative rotational movement. The inner wall of the bearing outer ring 1 is provided with an outer ring guide groove 3, and the outer wall of the bearing inner ring 2 is provided with an inner ring guide groove 4. The design of the outer ring guide groove 3 and the inner ring guide groove 4 can reduce the shaking of the bearing during operation, provide stable support and guidance for the ball 5, and ensure that the bearing can remain stable when rotating at high speed. A ball 5 is provided between the inner ring guide groove 4 and the outer ring guide groove 3, and a retainer 6 is provided on the outside of the ball 5. The ball 5, as a rolling element, can transmit huge force when the bearing is working to ensure the normal operation of the mechanical equipment. The retainer 6 fixes the ball 5 in a certain position to prevent it from being scattered, falling or rubbing against each other, thereby improving the stability and service life of the bearing.

[0022] The inner wall of the bearing inner ring 2 is provided with a tightening sleeve 9, which is used to position the bearing on the cylindrical shaft to ensure the accuracy and stability of the bearing installation. Ensure the tight fit between the bearing and the shaft. By adjusting the tightness of the tightening sleeve, the bearing preload can be controlled. The inner dust cover 7 is provided on both sides of the inner side of the bearing outer ring 1. The inner dust cover 7 is used to initially seal the inside of the bearing to prevent dust and impurities from entering, and also to prevent the lubricating oil in the bearing from leaking.

[0023] There are multiple balls 5, which are evenly arranged and rotatably connected between the inner ring 2 and the outer ring 1 of the bearing. There are two outer ring guide grooves 3, which are symmetrically distributed on the inner ring of the outer ring 1 of the bearing. There are two inner ring guide grooves 4, which are symmetrically distributed on the outer ring of the inner ring 2 of the bearing. Multiple balls 5 are evenly arranged between the inner ring 2 and the outer ring 1 of the bearing. This layout ensures the stability and uniform force of the bearing during operation. Each ball can share a part of the load, thereby extending the service life of the bearing. The ball 5 is connected between the inner ring and the outer ring of the bearing by rotation. This design allows the bearing to rotate smoothly while bearing the load. The rolling friction of the ball is much smaller than the sliding friction, so it can greatly reduce energy loss and wear. The symmetrical layout ensures the stability and balance of the bearing during operation, and avoids early wear and failure caused by eccentric load. The main function of the guide groove is to guide the ball to roll on the correct path between the inner and outer rings of the bearing. They ensure that the balls remain on their intended tracks when under load, thus avoiding direct collision and wear between the balls and the inner and outer rings of the bearing.

[0024] Example 2: Please refer to Figure 1-Figure 6The present invention provides a technical solution: a mechanical bearing for food processing, comprising: a bearing outer ring 1 and a bearing inner ring 2. The bearing outer ring 1 and the bearing inner ring 2 are the main structures of the bearing, which jointly support and fix the mechanical parts and allow relative rotational movement. The inner wall of the bearing outer ring 1 is provided with an outer ring guide groove 3, and the outer wall of the bearing inner ring 2 is provided with an inner ring guide groove 4. The design of the outer ring guide groove 3 and the inner ring guide groove 4 can reduce the shaking of the bearing during operation, provide stable support and guidance for the ball 5, and ensure that the bearing can remain stable when rotating at high speed. A ball 5 is provided between the inner ring guide groove 4 and the outer ring guide groove 3, and a retainer 6 is provided on the outside of the ball 5. The ball 5, as a rolling element, can transmit huge force when the bearing is working to ensure the normal operation of the mechanical equipment. The retainer 6 fixes the ball 5 in a certain position to prevent it from being scattered, falling or rubbing against each other, thereby improving the stability and service life of the bearing.

[0025] The inner wall of the bearing inner ring 2 is provided with a tightening sleeve 9, which is used to position the bearing on the cylindrical shaft to ensure the accuracy and stability of the bearing installation. Ensure the tight fit between the bearing and the shaft. By adjusting the tightness of the tightening sleeve, the bearing preload can be controlled. The inner dust cover 7 is provided on both sides of the inner side of the bearing outer ring 1. The inner dust cover 7 is used to initially seal the inside of the bearing to prevent dust and impurities from entering, and also to prevent the lubricating oil in the bearing from leaking.

[0026] There are multiple balls 5, which are evenly arranged and rotatably connected between the inner ring 2 and the outer ring 1 of the bearing. There are two outer ring guide grooves 3, which are symmetrically distributed on the inner ring of the outer ring 1 of the bearing. There are two inner ring guide grooves 4, which are symmetrically distributed on the outer ring of the inner ring 2 of the bearing. Multiple balls 5 are evenly arranged between the inner ring 2 and the outer ring 1 of the bearing. This layout ensures the stability and uniform force of the bearing during operation. Each ball can share a part of the load, thereby extending the service life of the bearing. The ball 5 is connected between the inner ring and the outer ring of the bearing by rotation. This design allows the bearing to rotate smoothly while bearing the load. The rolling friction of the ball is much smaller than the sliding friction, so it can greatly reduce energy loss and wear. The symmetrical layout ensures the stability and balance of the bearing during operation, and avoids early wear and failure caused by eccentric load. The main function of the guide groove is to guide the ball to roll on the correct path between the inner and outer rings of the bearing. They ensure that the balls remain on their intended tracks when under load, thus avoiding direct collision and wear between the balls and the inner and outer rings of the bearing.

[0027] In this embodiment, an outer dust cover 8 is fixed to the outer wall of the inner dust cover 7, and the outer width of the outer dust cover 8 is greater than the distance between the outer ring 1 of the bearing and the inner ring 2 of the bearing. The width of the outer dust cover 8 is designed to be greater than the distance between the outer ring 1 of the bearing and the inner ring 2, mainly to form an effective dust barrier outside the bearing. This design can effectively prevent external pollutants such as dust and particulate matter from entering the interior of the bearing, thereby protecting the rolling elements and lubrication system of the bearing and extending the service life of the bearing. In addition to the dust-proof effect, this design also helps to improve the sealing performance of the bearing. By ensuring that the outer dust cover 8 fits tightly on the outer ring 1 of the bearing, it is possible to prevent the lubricant from leaking out of the bearing, and at the same time prevent external harmful substances such as moisture and oil stains from invading the interior of the bearing.

[0028] Example 3: Please refer to Figure 1-Figure 10 The present invention provides a technical solution: a mechanical bearing for food processing, comprising: a bearing outer ring 1 and a bearing inner ring 2. The bearing outer ring 1 and the bearing inner ring 2 are the main structures of the bearing, which jointly support and fix the mechanical parts and allow relative rotational movement. The inner wall of the bearing outer ring 1 is provided with an outer ring guide groove 3, and the outer wall of the bearing inner ring 2 is provided with an inner ring guide groove 4. The design of the outer ring guide groove 3 and the inner ring guide groove 4 can reduce the shaking of the bearing during operation, provide stable support and guidance for the ball 5, and ensure that the bearing can remain stable when rotating at high speed. A ball 5 is provided between the inner ring guide groove 4 and the outer ring guide groove 3, and a retainer 6 is provided on the outside of the ball 5. The ball 5, as a rolling element, can transmit huge force when the bearing is working to ensure the normal operation of the mechanical equipment. The retainer 6 fixes the ball 5 in a certain position to prevent it from being scattered, falling or rubbing against each other, thereby improving the stability and service life of the bearing.

[0029] The inner wall of the bearing inner ring 2 is provided with a tightening sleeve 9, which is used to position the bearing on the cylindrical shaft to ensure the accuracy and stability of the bearing installation. Ensure the tight fit between the bearing and the shaft. By adjusting the tightness of the tightening sleeve, the bearing preload can be controlled. The inner dust cover 7 is provided on both sides of the inner side of the bearing outer ring 1. The inner dust cover 7 is used to initially seal the inside of the bearing to prevent dust and impurities from entering, and also to prevent the lubricating oil in the bearing from leaking.

[0030] There are multiple balls 5, which are evenly arranged and rotatably connected between the inner ring 2 and the outer ring 1 of the bearing. There are two outer ring guide grooves 3, which are symmetrically distributed on the inner ring of the outer ring 1 of the bearing. There are two inner ring guide grooves 4, which are symmetrically distributed on the outer ring of the inner ring 2 of the bearing. Multiple balls 5 are evenly arranged between the inner ring 2 and the outer ring 1 of the bearing. This layout ensures the stability and uniform force of the bearing during operation. Each ball can share a part of the load, thereby extending the service life of the bearing. The ball 5 is connected between the inner ring and the outer ring of the bearing by rotation. This design allows the bearing to rotate smoothly while bearing the load. The rolling friction of the ball is much smaller than the sliding friction, so it can greatly reduce energy loss and wear. The symmetrical layout ensures the stability and balance of the bearing during operation, and avoids early wear and failure caused by eccentric load. The main function of the guide groove is to guide the ball to roll on the correct path between the inner and outer rings of the bearing. They ensure that the balls remain on their intended tracks when under load, thus avoiding direct collision and wear between the balls and the inner and outer rings of the bearing.

[0031] In this embodiment, an outer dust cover 8 is fixed to the outer wall of the inner dust cover 7, and the outer width of the outer dust cover 8 is greater than the distance between the outer ring 1 of the bearing and the inner ring 2 of the bearing. The width of the outer dust cover 8 is designed to be greater than the distance between the outer ring 1 of the bearing and the inner ring 2, mainly to form an effective dust barrier outside the bearing. This design can effectively prevent external pollutants such as dust and particulate matter from entering the interior of the bearing, thereby protecting the rolling elements and lubrication system of the bearing and extending the service life of the bearing. In addition to the dust-proof effect, this design also helps to improve the sealing performance of the bearing. By ensuring that the outer dust cover 8 fits tightly on the outer ring 1 of the bearing, it is possible to prevent the lubricant from leaking out of the bearing, and at the same time prevent external harmful substances such as moisture and oil stains from invading the interior of the bearing.

[0032] In this embodiment, threaded sealing rings 10 are provided on both sides of the adapter sleeve 9, a gasket 11 is provided between the threaded sealing ring 10 and the outer dust cover 8, and a sealing ring 12 is provided on one side of the gasket 11. The outer wall of the adapter sleeve 9 abuts against the inner wall of the bearing inner ring 2. Threaded sealing rings 10 are provided on both sides of the adapter sleeve 9, and these sealing rings are tightly matched with the adapter sleeve through threads to form an effective sealing barrier. This design is intended to prevent lubricant from leaking from the inside of the bearing and prevent external contaminants from entering the bearing. The outer wall of the adapter sleeve 9 abuts against the inner wall of the bearing inner ring 2, and the bearing inner ring is fixed on the shaft by appropriate tightening force. This design ensures the stability and reliability of the bearing during operation. The gasket 11 is arranged between the threaded sealing ring 10 and the outer dust cover 8, which plays a role in increasing the sealing effect, buffering vibration and protecting the threaded sealing ring. The presence of the gasket can reduce the wear caused by the direct contact between the outer dust cover 8 and the threaded sealing ring 10, while improving the overall sealing performance.

[0033] Outer annular grooves matching the inner dust cover 7 are provided on both sides of the inner wall of the bearing outer ring 1, and inner annular grooves matching the inner dust cover 7 are provided on both sides of the inner wall of the bearing inner ring 2. The outer annular groove and the inner annular groove provide precise positioning and fixing points for the inner dust cover 7. This ensures that the inner dust cover 7 can be firmly mounted on the inner and outer rings of the bearing and will not loosen or fall off due to vibration or impact. By closely fitting with the inner dust cover 7, the outer annular groove and the inner annular groove effectively prevent dust, moisture and other contaminants from entering the interior of the bearing. This sealing design is particularly important for environments that need to be kept clean and hygienic, such as food processing. The precise groove design reduces the friction between the inner dust cover 7 and the inner and outer rings of the bearing, thereby extending the service life of the bearing. In addition, reducing friction also helps to reduce energy consumption and improve mechanical efficiency.

[0034] An upper convex ring 13 is provided on one side of the top of the inner dust cover 7, and lower convex rings 14 are provided on both sides of the bottom of the inner dust cover 7. The design of the upper convex ring 13 helps to further enhance the sealing performance between the inner dust cover 7 and the outer ring or inner ring of the bearing. By forming an additional sealing surface, the upper convex ring 13 can effectively prevent dust, moisture and other contaminants from entering from the top of the bearing. During the installation process, the upper convex ring 13 can be used as a positioning point to help the inner dust cover 7 be more accurately installed in the specified position of the bearing. This simplifies the installation process and ensures the accuracy of the installation. The lower convex ring 14 provides additional sealing surfaces on both sides of the bottom of the inner dust cover 7, forming a double sealing protection. This further enhances the sealing performance of the bearing and ensures the cleanliness and lubrication of the inside of the bearing. The design of the upper convex ring 13 and the lower convex ring 14 together improves the overall performance of the bearing. By enhancing the sealing performance, structural stability and lubrication effect, these design details help ensure that the bearing can still maintain good operating conditions in harsh environments. Due to the enhanced sealing performance and structural strength, the inner dust cover 7 of this design helps to extend the service life of the bearing. This reduces downtime and maintenance costs and improves the overall efficiency of mechanical equipment.

[0035] The adapter sleeve 9 is C-shaped, and both ends of the adapter sleeve 9 are provided with external threads that match the threaded seal ring 10. The inner ring of the threaded seal ring 10 is provided with internal threads that match the threads on the adapter sleeve 9. The design of the C-type adapter sleeve makes it easier to put it on the shaft. The C-type adapter sleeve can provide a certain preload force through its elastic deformation to ensure a tight fit between the bearing and the shaft. This helps to reduce vibration and noise and improve the running stability of the bearing. In a high temperature environment, the shaft may become longer due to thermal expansion. The design of the C-type adapter sleeve allows it to open moderately with the expansion of the shaft, thereby maintaining a tight fit between the bearing and the shaft and preventing failures caused by looseness. The external threads on the adapter sleeve 9 are tightly matched with the internal threads in the threaded seal ring 10 to form an effective sealing barrier. This helps prevent lubricant from leaking out of the bearing and prevents dust, moisture and other contaminants from entering the bearing. The thread fit not only enhances the sealing performance, but also provides additional fixing force to ensure that the adapter sleeve 9 and the threaded seal ring 10 can be firmly fixed on the bearing and the shaft. This helps to improve the bearing's load capacity and stability. The thread fit allows the position of the adapter sleeve 9 and threaded seal 10 to be fine-tuned during installation to ensure their precise alignment with the bearing and shaft. This helps reduce vibration and noise caused by improper installation.

[0036] The sealing ring 12 has a hook-shaped cross section, and an annular groove that matches the sealing ring 12 is provided on one side of the inner wall of the outer dust cover 8. The sealing ring 12 and the outer dust cover 8 are clearance-fitted. The hook-shaped cross-sectional design of the sealing ring 12 increases the tightness of its fit with the annular groove on the inner wall of the outer dust cover 8. This design can effectively prevent dust, moisture and other contaminants from entering from the outside of the bearing, thereby keeping the inside of the bearing clean and lubricated. The clearance fit between the sealing ring 12 and the outer dust cover 8 allows a certain relative movement between the two during installation and use.

[0037] When the mechanical bearing for food processing is used, an inner dust cover 7 is provided between the bearing outer ring 1 and the bearing inner ring 2 to achieve preliminary sealing of the bearing interior, and a larger outer dust cover 8 is provided on the inner dust cover 7 to provide a second sealing protection for the area between the bearing inner ring 2 and the bearing outer ring 1. At the same time, a tightening sleeve 9 is installed on the bearing inner ring 2, and a sealing ring 12, a gasket 11 and a threaded sealing ring 10 are provided on both sides of the tightening sleeve 9, so that the sealing ring 12 and the outer dust cover 8 are sealed again to further improve the sealing protection effect of the entire bearing, effectively avoid the leakage of the lubricating oil inside the bearing during food processing, and improve the sealing protection effect of the bearing during food processing. The bearing assembly of this design has the advantages of efficient sealing system, stable fixing effect, and easy maintenance and replacement. These characteristics make the assembly particularly suitable for mechanical equipment that requires high sealing performance and stability, such as food processing, pharmaceutical, chemical and other fields.

[0038] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A mechanical bearing for food processing, comprising: A bearing outer ring (1) and a bearing inner ring (2), characterized in that: an outer ring guide groove (3) is provided on the inner wall of the bearing outer ring (1), an inner ring guide groove (4) is provided on the outer wall of the bearing inner ring (2), a ball (5) is provided between the inner ring guide groove (4) and the outer ring guide groove (3), a retaining frame (6) is provided on the outer side of the ball (5), a clamping sleeve (9) is provided on the inner wall of the bearing inner ring (2), inner dust covers (7) are provided on both sides of the inner part of the bearing outer ring (1), an outer dust cover (8) is fixed on the outer wall of the inner dust cover (7), threaded sealing rings (10) are provided on both sides of the clamping sleeve (9), a gasket (11) is provided between the threaded sealing ring (10) and the outer dust cover (8), and a sealing ring (12) is provided on one side of the gasket (11).

2. A food processing mechanical bearing according to claim 1, characterized in that: The inner wall of the bearing outer ring (1) is provided with outer annular grooves matching the inner dust cover (7) on both sides, and the inner wall of the bearing inner ring (2) is provided with inner annular grooves matching the inner dust cover (7) on both sides.

3. A food processing mechanical bearing according to claim 2, characterized in that: An upper convex ring (13) is provided on one side of the top of the inner dust cover (7), and lower convex rings (14) are provided on both sides of the bottom of the inner dust cover (7).

4. A food processing mechanical bearing according to claim 1, characterized in that: The adapter sleeve (9) is C-shaped, and both ends of the adapter sleeve (9) are provided with external threads that match the threaded sealing ring (10).

5. A food processing mechanical bearing according to claim 1, characterized in that: The sealing ring (12) has a hook-shaped cross section, and an annular groove matching the sealing ring (12) is provided on one side of the inner wall of the outer dust cover (8).

6. A food processing mechanical bearing according to claim 5, characterized in that: The sealing ring (12) and the outer dust cover (8) are clearance-fitted.

7. A food processing mechanical bearing according to claim 4, characterized in that: The inner ring of the threaded sealing ring (10) is provided with an internal thread which matches the thread on the adapter sleeve (9).

8. A food processing mechanical bearing according to claim 1, characterized in that: The outer width of the outer dust cover (8) is greater than the distance between the bearing outer ring (1) and the bearing inner ring (2).

9. A food processing mechanical bearing according to claim 1, characterized in that: The outer wall of the adapter sleeve (9) abuts against the inner wall of the bearing inner ring (2).

10. A food processing mechanical bearing according to claim 1, characterized in that: There are a plurality of balls (5), which are evenly arranged and rotatably connected between the bearing inner ring (2) and the bearing outer ring (1); there are two outer ring guide grooves (3), which are symmetrically distributed on the inner ring of the bearing outer ring (1); there are two inner ring guide grooves (4), which are symmetrically distributed on the outer ring of the bearing inner ring (2).

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