A meat grinder speed reducer and a meat grinder motor assembly using the same

Abstract

This utility model relates to a meat grinder reducer and a meat grinder motor assembly using the reducer. It includes a reducer housing, within which a reduction shaft and an output shaft are rotatably mounted. The reducer housing has an opening at its left end, and the left end of the reducer housing shares a flange end cover with the meat grinder motor. The motor shaft mounting hole and the output shaft are coaxially aligned. A recessed cavity is formed at the lower end of the joint between the flange end cover and the reducer housing. A first gear is located above the recessed cavity and partially enters it. A rubber strip is attached to the bottom surface of the recessed cavity. A rubber ring groove is also provided at the joint between the flange end cover and the reducer housing, and an end cover sealing ring is installed in the rubber ring groove. The beneficial effects of this utility model are: the recessed cavity is used to accumulate lubricating oil; the nitrile rubber strip above the joint at the bottom of the recessed cavity, together with the original end cover sealing ring, forms a double sealing structure, greatly enhancing the reliability of the seal and effectively preventing lubricating oil leakage.

Description

Technical Field

[0001] This utility model relates to an improvement of a meat grinder reducer. Background Technology

[0002] Existing motor assemblies with reducers used in meat grinders need to meet food-grade standards. However, since the reducer is horizontally mounted on one side of the motor, the lowest point of the gear mechanism is located above the junction of the reducer and the motor end cover, so the oil sump cannot be placed here.

[0003] Because the gear set in the reducer is not symmetrically arranged and has a high degree of imbalance, and due to the impact of gear meshing, the reducer will vibrate.

[0004] Although we installed a sealing ring at the joint, the long-term harsh operating environment caused lubricant to leak out at the joint.

[0005] Although lubricating oil is not highly toxic, it typically contains various chemicals, such as additives and preservatives, which may be harmful to human health. If lubricating oil spills into the working area of ​​a meat grinder, it can easily contaminate the food being processed. If people consume contaminated food, it may cause discomfort such as nausea, vomiting, and diarrhea, and in severe cases, even food poisoning. Utility Model Content

[0006] In order to overcome the shortcomings of the reducers in current meat grinders, this utility model provides a meat grinder reducer and a meat grinder motor assembly using the reducer.

[0007] The technical solution of this utility model to solve its technical problem is as follows: a meat grinder reducer includes a reducer housing, in which a reduction shaft and an output shaft are rotatably disposed. The reduction shaft is provided with a first gear and a second gear, and the output shaft is provided with a third gear that meshes with the second gear. The right side of the output shaft has a power connection end. The left end of the reducer housing is open, and the left end of the reducer housing shares a flange end cover of the meat grinder motor. The center of the flange end cover is provided with a motor shaft mounting hole. The first gear is located on one side of the motor shaft mounting hole and meshes with the motor output gear to be installed. The motor shaft mounting hole and the output shaft are arranged coaxially. A cavity is recessed at the lower end of the joint between the flange end cover and the reducer housing. The first gear is located above the cavity and partially enters the cavity. A rubber strip is attached to the bottom surface of the cavity. A rubber ring groove is also provided at the joint between the flange end cover and the reducer housing, and an end cover sealing ring is provided in the rubber ring groove.

[0008] In a preferred embodiment of a rubber sheet, the cavity is an arc-shaped cavity, and the rubber sheet is an arc-shaped rubber sheet.

[0009] Furthermore, the ends of the arc-shaped rubber sheet are rounded.

[0010] A preferred power connection end is a connection groove recessed on the right section of the output shaft; the connection groove is a square groove.

[0011] The material of the rubber sheet is selected by optimization, and the rubber sheet is selected as nitrile rubber sheet.

[0012] This utility model also includes a meat grinder motor assembly using the reducer, comprising a motor, a flange end cover on the right side of the motor, a motor shaft in the middle of the motor, and an output gear on the right side of the motor shaft; the meat grinder reducer is located on the right side of the motor, and the meat grinder reducer and the motor share the same flange end cover.

[0013] This utility model also includes the following additional technical features: the motor shaft, the reduction shaft and the output shaft are all provided with bearing support, the motor shaft is mounted on the first bearing group, the reduction shaft is mounted on the second bearing group and the output shaft is mounted on the third bearing group, the motor shaft is also provided with a first sealing ring and the output shaft is provided with a second sealing ring; a support bolt is also screwed on the upper end of the reducer housing for fixing the hopper.

[0014] When in use, this utility model is installed on the motor as a whole. After the power connection end of the output shaft is connected to the meat grinder's main shaft, it provides power to the meat grinder's main shaft, which will not be described in detail here.

[0015] The beneficial effects of this utility model are as follows: 1. The recessed cavity is used to accumulate lubricating oil. A nitrile rubber sheet is installed above the joint seam at the bottom of the recessed cavity, forming a double sealing structure with the original end cover sealing ring, which greatly enhances the reliability of the seal and effectively prevents lubricating oil leakage. 2. During the operation of the meat grinder, the flange end cover and the reducer will vibrate and have a certain degree of displacement, which may cause slight changes in the relative position between the mating surfaces. The arc-shaped rubber sheet has a certain elasticity and flexibility, which can better adapt to this change, always maintain a tight fit with the mating surface, continuously perform the sealing function, and reduce the risk of oil leakage caused by dynamic changes in the mating surface. 3. The motor shaft and the output shaft are coaxially arranged. Compared with conventional meat grinder assemblies with reducers, the axial bending moment of the output shaft is canceled out during operation, resulting in less reducer vibration during use, which not only reduces noise but also reduces the possibility of oil leakage at the end cover flange. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a meat grinder reducer as an example.

[0017] Figure 2 This is a cross-sectional schematic diagram of a meat grinder reducer according to one embodiment.

[0018] Figure 3 This is a cross-sectional schematic diagram of a meat grinder motor assembly according to one embodiment.

[0019] Figure 4 yes Figure 2 Enlarged diagram of point A in the diagram.

[0020] Figure 5 This is an exploded schematic diagram of an improved structure for the oil leakage point in a concave cavity, as shown in one embodiment. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] Example 1

[0023] Combined with appendix Figure 3 A meat grinder motor assembly using the reducer includes a motor 1, a flange end cover 2 on the right side of the motor 1, a motor shaft 3 in the middle of the motor 1, an output gear 4 on the right side of the motor shaft 3, and a meat grinder reducer 5 on the right side of the motor 1, the meat grinder reducer 5 and the motor 1 sharing the flange end cover 2.

[0024] Combined with appendix Figure 1 and 2 4 and 5, a meat grinder reducer 5, including a reducer housing 6, in which a reduction shaft 7 and an output shaft 8 are rotatably provided, a first gear 9 and a second gear 10 are provided on the reduction shaft 7, a third gear 11 that meshes with the second gear 10 is provided on the output shaft 8, and a power connection end 12 is provided on the right side of the output shaft 8.

[0025] The reducer housing 6 has an opening at its left end, and the flange end cover 2 has a motor shaft mounting hole 13 at its center. The first gear 9 is located on one side of the motor shaft mounting hole 13 and meshes with the motor output gear 4 to be installed. The motor shaft mounting hole 13 and the output shaft 8 are coaxially arranged. A recessed cavity 14 is provided at the lower end of the joint between the flange end cover 2 and the reducer housing 6. The first gear 9 is located above the recessed cavity 14 and partially enters the recessed cavity 14. A rubber sheet 15 is attached to the bottom surface of the recessed cavity 14. A rubber ring groove is also provided at the joint between the flange end cover 2 and the reducer housing 6. An end cover sealing ring 16 is provided in the rubber ring groove.

[0026] In a preferred embodiment of the rubber sheet 15, the cavity 14 is an arc-shaped cavity 14, and the rubber sheet 15 is an arc-shaped rubber sheet.

[0027] Furthermore, the ends of the arc-shaped rubber sheet are rounded.

[0028] A preferred embodiment of the power connection end 7 is a connection groove recessed on the right cross-section of the output shaft 8; the connection groove is a square groove.

[0029] The material of the rubber sheet 15 is preferably selected, and the rubber sheet 15 is selected as a nitrile rubber sheet.

[0030] The motor shaft 3, the reduction shaft 7, and the output shaft 8 are all supported by bearings. The motor shaft 3 is mounted on the first bearing group 17, the reduction shaft 7 is mounted on the second bearing group 18, and the output shaft 8 is mounted on the third bearing group 19. The motor shaft 3 is also provided with a first sealing ring 20, and the output shaft 8 is provided with a second sealing ring 21. A support bolt 22 is also screwed onto the upper end of the reducer housing for fixing the hopper.

[0031] When in use, this utility model is installed on the motor 1 as a whole. After the power connection end 7 of the output shaft 8 is connected to the meat grinder main shaft, it provides power to the meat grinder main shaft, which will not be described in detail here.

[0032] The beneficial effects of this utility model are as follows: 1. The recessed cavity is used to accumulate lubricating oil. A nitrile rubber sheet is installed above the joint seam at the bottom of the recessed cavity, forming a double sealing structure with the original end cover sealing ring, which greatly enhances the reliability of the seal and effectively prevents lubricating oil leakage. 2. During the operation of the meat grinder, the flange end cover and the reducer will vibrate and have a certain degree of displacement, which may cause slight changes in the relative position between the mating surfaces. The arc-shaped rubber sheet has a certain elasticity and flexibility, which can better adapt to this change, always maintain a tight fit with the mating surface, continuously perform the sealing function, and reduce the risk of oil leakage caused by dynamic changes in the mating surface. 3. The motor shaft and the output shaft are coaxially arranged. Compared with conventional meat grinder assemblies with reducers, the axial bending moment of the output shaft is canceled out during operation, resulting in less reducer vibration during use, which not only reduces noise but also reduces the possibility of oil leakage at the end cover flange.

Claims

1. A meat grinder reducer, comprising a reducer housing, wherein a reduction shaft and an output shaft are rotatably disposed within the reducer housing, a first gear and a second gear are disposed on the reduction shaft, and a third gear meshing with the second gear is disposed on the output shaft, and a power connection end is provided on the right side of the output shaft; characterized in that: The reducer housing has an opening at its left end, and the left end of the reducer housing shares a flange end cover with the meat grinder motor. The flange end cover has a motor shaft mounting hole at its center. The first gear is located on one side of the motor shaft mounting hole and meshes with the motor output gear to be installed. The motor shaft mounting hole and the output shaft are coaxially aligned. A recessed cavity is provided at the lower end of the joint between the flange end cover and the reducer housing. The first gear is located above the recessed cavity and partially enters the recessed cavity. A rubber sheet is attached to the bottom surface of the recessed cavity. A rubber ring groove is also provided at the joint between the flange end cover and the reducer housing, and an end cover sealing ring is provided in the rubber ring groove.

2. The meat grinder reducer according to claim 1, characterized in that: The cavity is an arc-shaped cavity, and the rubber sheet is an arc-shaped rubber sheet.

3. The meat grinder reducer according to claim 2, characterized in that: The ends of the arc-shaped rubber sheet are rounded.

4. The meat grinder reducer according to claim 1, characterized in that: The power connection end is a connection groove recessed on the right section of the output shaft; the connection groove is a square groove.

5. The meat grinder reducer according to claim 1, characterized in that: The rubber sheet is made of nitrile rubber.

6. A meat grinder motor assembly, comprising a motor, a flange end cover on the right side of the motor, a motor shaft in the middle of the motor, and an output gear on the right side of the motor shaft; further comprising a reducer housing, wherein a reduction shaft and an output shaft are rotatably disposed within the reducer housing, a first gear and a second gear are disposed on the reduction shaft, a third gear meshing with the second gear is disposed on the output shaft, a power connection end is provided on the right side of the output shaft, and an oiling end is provided on the upper side of the reducer housing; characterized in that: The reducer housing has an opening at its left end, and the left end of the reducer housing shares a flange end cover with the meat grinder motor. The flange end cover has a motor shaft mounting hole at its center. The first gear is located on one side of the motor shaft mounting hole and meshes with the output gear of the motor to be installed. The motor shaft mounting hole and the output shaft are coaxially arranged. A recessed cavity is provided at the lower end of the joint between the flange end cover and the reducer housing. The first gear is located above the recessed cavity and partially enters the recessed cavity. A rubber sheet is attached to the bottom surface of the recessed cavity. A rubber ring groove is also provided at the joint between the flange end cover and the reducer housing, and a sealing ring is provided in the rubber ring groove.

7. The meat grinder motor assembly according to claim 6, characterized in that: The cavity is an arc-shaped cavity, and the rubber sheet is an arc-shaped rubber sheet.

8. The meat grinder motor assembly according to claim 7, characterized in that: The ends of the arc-shaped rubber sheet are rounded.

9. The meat grinder motor assembly according to claim 6, characterized in that: The power connection end is a connection groove recessed on the right section of the output shaft; the connection groove is a square groove.

10. The meat grinder motor assembly according to claim 6, characterized in that: The rubber sheet is made of nitrile rubber.

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