Food processor capable of working stably

Abstract

The utility model discloses a food processor capable of working stably, and relates to the field of life electric appliances, the food processor comprises a main machine and a cup body assembly, the cup body assembly comprises a cup body and a cutter holder, the cutter holder comprises a heating disc, and a stirring cutter assembly is arranged in the middle of the heating disc; the stirring cutter assembly comprises a mounting seat, a bearing arranged in the mounting cavity, a shaft seal and a cutter shaft penetrating through the bearing and the shaft seal, the shaft seal comprises an upper shaft seal arranged above the bearing and a lower shaft seal arranged below the bearing, the upper shaft seal and the lower shaft seal seal the mounting cavity, and the mounting seat is provided with a pressure relief channel communicating the mounting cavity with the outside. The situation that the upper shaft seal or the lower shaft seal is jacked up outwards due to the rising of air pressure in the mounting cavity, and food material slurry and the like leak into the mounting cavity or lubricating oil and the like leak into other structures downwards is effectively avoided, and the rotating stability of the bearing is guaranteed; and the situation that noise and even clamping stagnation are generated in the rotating process of the bearing due to food material slurry pollution or lubrication failure is avoided, and then the working stability of the whole machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, in particular to a food processing machine with stable operation. Background Art

[0002] Existing food processors usually include a main unit and a cup assembly, in which a stirring piece connected to the motor in the main unit is provided. When the user uses the food processor to process food, the food is placed in the cup assembly, and then the stirring piece is driven by the motor at high speed to process the food. In order to achieve stable transmission of the stirring piece, a mounting seat forming a mounting cavity is usually set in the middle of the heating plate, and a bearing is set in the mounting cavity. The knife shaft passes through the bearing and is connected to the stirring piece, so as to ensure the stability of the rotation of the knife shaft and the stirring piece. However, since there is a gap between the knife shaft, the heating plate and the mounting seat, when processing food, the food may enter the mounting cavity through the gap, causing the bearing to rotate unsmoothly, generate rotation noise or even get stuck; at the same time, the lubricating oil for lubricating the bearing will flow downward to the outside, causing the external structure to be contaminated, and the bearing lubrication effect deteriorates, causing unsmooth rotation. In order to solve the above problems, some manufacturers will place an upper shaft seal and a lower shaft seal on the upper and lower sides of the bearing respectively, so as to seal the mounting cavity and isolate the bearing from the outside. However, in actual use, the heat from the heating plate and the high-speed rotation of the bearing will cause the temperature in the installation cavity to rise and the gas to expand due to the heat. The expansion of the gas will lift up the upper and lower shaft seals, causing food slurry to leak into the installation cavity or lubricating oil to leak downward into other structures, seriously affecting consumers' experience. Utility Model Content

[0003] The utility model aims to provide a food processing machine with stable operation, so as to solve the contradiction that the installation cavity of the existing food processing machine is easily penetrated by external liquid when in an unsealed state, and expands due to heat when in a sealed state, resulting in sealing failure, thereby causing the problem of poor reliability of the knife seat assembly.

[0004] To achieve the above-mentioned purpose, the utility model provides a food processing machine with stable operation, including a main machine and a cup body assembly, the cup body assembly including a cup body with upper and lower openings and a knife seat arranged at the lower end opening of the cup body, the knife seat including a heating plate, a stirring knife assembly being arranged in the middle of the heating plate, the stirring knife assembly including a mounting seat forming a mounting cavity and a bearing arranged in the mounting cavity, a shaft seal and a knife shaft passing through the bearing and the shaft seal, the shaft seal including an upper shaft seal arranged above the bearing and a lower shaft seal arranged below the bearing, the upper shaft seal and the lower shaft seal close the mounting cavity, and the mounting seat is provided with a pressure relief channel connecting the mounting cavity with the outside.

[0005] The present application arranges a bearing, an upper shaft seal arranged above the bearing, and a lower shaft seal arranged below the bearing in the mounting cavity, and the upper shaft seal and the lower shaft seal seal the mounting cavity, so that the bearing is sealed in the mounting cavity, which effectively prevents the food on the heating plate and the mounting seat of the food processor from entering the mounting cavity when the food processor is processing food. Under the isolation of the upper shaft seal, the food slurry and the like can be effectively prevented from entering the mounting cavity, resulting in uneven rotation of the bearing, rotation noise, or even jamming, thereby ensuring the stability of the bearing rotation. At the same time, with the help of the closure of the lower shaft seal, the lubricating oil for lubricating the bearing can always be in the mounting cavity, effectively preventing the lubricating oil from flowing out through the gap between the knife shaft and the mounting cavity, thereby contaminating the food processor. At the same time, the mounting seat is provided with a pressure relief channel connecting the mounting cavity with the outside world, so that when the food processor is processing food, the temperature in the mounting cavity increases due to the high-speed rotation of the bearing, causing the gas to expand due to the heat and be discharged outward through the pressure relief channel to ensure the pressure balance inside and outside, and effectively avoid the situation where the upper shaft seal or the lower shaft seal is pushed outward due to the increase of air pressure in the mounting cavity, causing the food slurry to leak into the mounting cavity or the lubricating oil to leak downward into other structures, thereby ensuring the stability of the bearing rotation, avoiding the situation where the bearing is contaminated by the food slurry or the lubrication fails, causing noise or even jamming during rotation, thereby improving the stability of the whole machine.

[0006] In a preferred implementation of a food processing machine with stable operation, the mounting seat includes a surrounding plate arranged outside the bearing and the shaft seal, and the pressure relief channel includes a pressure relief port arranged on the surrounding plate, and the pressure relief port is connected to the outside.

[0007] By setting the pressure relief channel to include a pressure relief port set on the enclosure, and the pressure relief port is connected to the outside, after the air pressure in the installation cavity increases, the gas can be discharged outward through the pressure relief port, thereby ensuring the pressure balance inside and outside the installation cavity, effectively avoiding the situation where the upper and lower shaft seals are pushed open due to the increase in air pressure in the installation cavity, causing abnormal bearing rotation, and ensuring the smoothness of the bearing rotation.

[0008] In a preferred implementation of a food processing machine with stable operation, the knife seat also includes an insulating sleeve arranged below the heating plate, the insulating sleeve abuts against the lower shaft seal, the knife seat also includes a seal arranged between the enclosure and the insulating sleeve, the seal includes a first sealing portion clamped between the bottom end of the enclosure and the top wall of the insulating sleeve and a second sealing portion arranged around the outside of the enclosure, and the pressure relief channel also includes an exhaust port arranged on the second sealing portion and radially aligned with the pressure relief port.

[0009] By providing a heat-insulating sleeve under the heating disk, the heating disk is separated from the main unit, which effectively prevents a large amount of heat from the heating disk from being transferred to the main unit, resulting in a significant temperature rise of the main unit. At the same time, the knife seat also includes a seal provided between the enclosure and the heat-insulating sleeve, so that the enclosure and the heat-insulating sleeve can further improve the tightness of the connection and cooperation between the two with the help of the seal, effectively prevent the lubricating oil in the installation cavity from overflowing outward, further ensure the stability of the bearing rotation, and at the same time, with the help of the deformation performance of the seal, offset the errors of the enclosure and the heat-insulating sleeve during production and assembly, and further improve the assembly effect. In addition, the second sealing part is provided with an exhaust port radially aligned with the pressure relief port, so that the seal can achieve sealing while also achieving exhaust into the accommodating cavity through the exhaust port, ensuring smooth exhaust, and avoiding the second sealing part blocking the pressure relief port, resulting in poor exhaust or even no exhaust.

[0010] In a preferred implementation of a food processing machine with stable operation, the knife seat also includes an insulating sleeve arranged below the heating plate, the insulating sleeve abuts against the lower shaft seal, the insulating sleeve is provided with a rib extending upward and surrounding the outside of the enclosure, and the pressure relief channel also includes an exhaust gap formed between the rib and the enclosure to connect the pressure relief port with the outside.

[0011] The heat insulation sleeve is provided with ribs extending upward and surrounding the outer side of the enclosure, so that when the heat insulation sleeve and the heating plate are matched, the stability of the connection between the two can be improved through the limiting effect of the ribs and the enclosure, avoiding the lateral relative displacement between the two, thereby further improving the sealing effect of the installation cavity. At the same time, the pressure relief channel also includes an exhaust gap formed between the ribs and the enclosure to connect the pressure relief port and the accommodating cavity, so that the ribs can not only limit the enclosure, but also realize the connection between the pressure relief port and the outside world through the exhaust gap, thereby ensuring the smoothness of the pressure relief of the installation cavity.

[0012] In a preferred implementation of a food processor with stable operation, the inner wall of the rib is concavely formed with an exhaust groove radially aligned with the pressure relief port and extending axially to the top of the rib, and the exhaust gap includes the exhaust groove; or,

[0013] The gap between the ribs and the enclosure is matched to form an exhaust gap.

[0014] By forming an exhaust groove in the inner wall of the rib that is radially aligned with the pressure relief port and axially extends to the top of the rib, the rib can be butted against the enclosure, which helps to further improve the stability of the connection between the two and further avoid the relative displacement between the two, which leads to the deterioration or even failure of the sealing effect of the installation cavity. At the same time, the exhaust groove is set so that the gas can be directly discharged through the exhaust groove after passing through the pressure relief port to achieve pressure relief, ensuring the smoothness of the pressure relief of the installation cavity.

[0015] By matching the gap between the ribs and the enclosure to form the exhaust gap, the forming of the exhaust gap is simplified, which helps to reduce the production cost of the insulation sleeve and improve its production efficiency.

[0016] In a preferred implementation of a food processing machine with stable operation, the knife seat also includes an insulating sleeve arranged below the heating plate, the insulating sleeve abuts against the lower shaft seal, the heating plate and the insulating sleeve are sealed and cooperated to form a accommodating cavity, and the insulating sleeve is provided with an exhaust passage connecting the installation cavity and the accommodating cavity, so that the accommodating cavity is connected to the outside through the pressure relief passage and the exhaust passage.

[0017] By providing an exhaust channel connecting the installation cavity and the accommodating cavity on the insulation sleeve, when the food processor is working, the heat generated by the heating plate causes the gas in the accommodating cavity to expand due to the heat. The gas can enter the installation cavity through the exhaust channel and then be discharged outwardly through the pressure relief channel, thereby ensuring the pressure balance inside and outside the accommodating cavity and the installation cavity, and realizing the reuse of the pressure relief channel. Compared with the existing method of providing a separate air hole on the insulation sleeve and providing a waterproof and breathable membrane at the air hole, the overall structure of the knife seat can be simplified, the step of providing an air hole on the heating plate or the insulation sleeve is eliminated, and the situation where the stability of the knife seat structure is reduced due to the opening of the air hole is avoided, thereby ensuring the overall strength of the knife seat.

[0018] In a preferred implementation of a food processor with stable operation, the heat-insulating sleeve is provided with a first avoidance hole for the knife shaft to pass through, and the first avoidance hole and the heat-insulating sleeve are gap-matched to form a pressure relief channel.

[0019] A first avoidance hole for the knife shaft to pass through is provided in the insulation sleeve, and the first avoidance hole and the insulation sleeve are gap-matched to form a pressure relief channel, so that after the gas in the installation cavity and the accommodating cavity expands due to heat, it can be discharged outward through the pressure relief channel formed between the first avoidance hole and the insulation sleeve, thereby ensuring smooth pressure relief.

[0020] In a preferred implementation of a food processing machine with stable operation, the shaft seal includes an upper shaft seal arranged above the bearing and a lower shaft seal arranged below the bearing, the lower shaft seal is provided with a second avoidance hole for the knife shaft to pass through, the second avoidance hole is provided with an annular pressure relief rib inclined downward and abutting against the knife shaft, the pressure relief rib is constructed to operate under the pressure difference between the installation cavity and the outside world to switch from a closed state to an open state.

[0021] By providing an annular pressure relief rib inclined downward and abutting against the knife shaft at the second avoidance hole, the pressure relief rib is constructed to operate under the pressure difference between the installation cavity and the outside world to switch from a closed state to an open state, so that the pressure relief seam can only be opened to achieve pressure relief when the pressure in the pressure relief channel is greater than the outside pressure, thereby avoiding the situation where the pressure relief seam is always open, allowing external water stains to enter the pressure relief channel through it, thereby improving the waterproof performance.

[0022] In a preferred implementation of a food processing machine with stable operation, a waterproof and breathable membrane is further provided in the pressure relief channel.

[0023] By providing a waterproof and breathable membrane in the pressure relief channel, on the one hand, the waterproof and breathable capacity of the pressure relief channel can be further improved to prevent external water stains from entering the pressure relief channel and entering the installation cavity through the pressure relief channel; on the other hand, the waterproof and breathable plug blocks external stains, thereby ensuring the cleanliness of the pressure relief channel and effectively preventing the accumulation of dirt in the pressure relief channel that causes its exhaust to be reduced or even impossible to exhaust, thereby ensuring the stability of the pressure relief channel.

[0024] In a preferred implementation of a food processor with stable operation, the knife seat also includes an insulating sleeve arranged below the heating plate, the heating plate and the insulating sleeve are sealed together to form a accommodating cavity, the heating plate and the insulating sleeve are connected by a connecting structure, and the connecting structure is provided with a ventilation channel connecting the accommodating cavity with the outside world.

[0025] By providing a pressure relief channel connecting the accommodating cavity with the outside world in the connecting structure, the heat generated by the heating plate of the food processor during operation causes the internal gas to expand due to the heat, and then it can be discharged outward through the pressure relief channel to ensure the pressure balance between the inside and the outside. Compared with the existing method of setting a separate air vent and setting a waterproof breathable membrane at the air vent, on the one hand, it can simplify the overall structure of the knife seat, eliminating the step of opening an air vent on the heating plate or the insulation sleeve, and at the same time, when the heating plate is connected and matched with the insulation sleeve, a pressure relief channel can be formed at the connecting structure, which helps to improve the production efficiency of the knife seat and reduce the production cost, and avoids the situation where the stability of the knife seat structure is reduced due to the opening of the air vent, and ensures the overall strength of the knife seat; on the other hand, the extension path of the pressure relief channel at the connecting structure is relatively tortuous, which can achieve pressure relief and waterproof at the same time. Compared with setting a waterproof breathable membrane, it avoids the situation where it is easily damaged and loses its waterproof function, ensures waterproof performance, and improves the stability of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0027] Figure 1 This is a schematic structural diagram of a knife holder in one embodiment of the utility model;

[0028] Figure 2 A cross-sectional view of a knife holder in one embodiment of the utility model;

[0029] Figure 3 for Figure 2Enlarged view of part A in the middle;

[0030] Figure 4 This is an exploded view of a knife holder in one embodiment of the utility model;

[0031] Figure 5 This is a schematic diagram of the structure of a heating plate in one embodiment of the utility model;

[0032] Figure 6 It is a schematic structural diagram of a sealing member in one embodiment of the utility model.

[0033] List of parts and reference numerals:

[0034] 1-heating plate, 11-installing protrusion; 2-insulating sleeve, 21-first avoidance hole, 22-rib; 3-board, 31-pressure relief port; 4-bearing; 5-knife shaft; 6-upper shaft seal; 7-lower shaft seal, 71-pressure relief rib; 8-installing cavity; 9-accommodating cavity; 10-seal, 101-first sealing part, 102-second sealing part, 1021-exhaust port. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0036] It should be noted that many specific details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific implementation methods disclosed below.

[0037] like Figures 1 to 6 As shown, the utility model provides a food processing machine with stable operation, including a main machine and a cup body assembly, the cup body assembly includes a cup body with upper and lower openings and a knife seat arranged at the lower end opening of the cup body, the knife seat includes a heating plate 1, a stirring knife assembly is arranged in the middle of the heating plate 1, the stirring knife assembly includes a mounting seat formed with a mounting cavity 8 and a bearing 4 arranged in the mounting cavity 8, a shaft seal and a knife shaft 5 passing through the bearing 4 and the shaft seal, the shaft seal includes an upper shaft seal 6 arranged above the bearing 4 and a lower shaft seal 7 arranged below the bearing 4, the upper shaft seal 6 and the lower shaft seal 7 close the mounting cavity 8, and the mounting seat is provided with a pressure relief channel connecting the mounting cavity 8 with the outside.

[0038] The present application arranges a bearing 4, an upper shaft seal 6 arranged above the bearing 4, and a lower shaft seal 7 arranged below the bearing 4 in the installation cavity 8, and the upper shaft seal 6 and the lower shaft seal 7 seal the installation cavity 8. Specifically, as Figure 2As shown, the upper shaft seal 6 and the lower shaft seal 7 are both in contact with the side wall of the knife shaft 5 to achieve the closure of the installation cavity 8. The bearing 4 is sealed in the installation cavity 8, which effectively prevents the food on the heating plate 1 and the mounting seat from entering the installation cavity 8 when the food processor is processing food. Under the isolation of the upper shaft seal 6, the food slurry can be effectively prevented from entering the installation cavity 8, which causes the bearing 4 to rotate unsmoothly and generate rotation noise or even jam, thereby ensuring the stability of the bearing 4 rotation; at the same time, with the help of the closure of the lower shaft seal 7, the lubricating oil for lubricating the bearing 4 can always be in the installation cavity 8, effectively preventing the lubricating oil from flowing out through the gap between the knife shaft 5 and the installation cavity 8 to cause the food processor to be polluted. At the same time, the mounting seat is provided with a pressure relief channel connecting the mounting cavity 8 with the outside, so that when the food processing machine is processing food, the temperature in the mounting cavity 8 increases due to the high-speed rotation of the bearing 4, and the gas expands due to the heat, and can be discharged outward through the pressure relief channel to ensure the pressure balance inside and outside, and effectively avoid the situation where the upper shaft seal 6 or the lower shaft seal 7 is pushed outward due to the increase of air pressure in the mounting cavity 8, causing the food slurry to leak into the mounting cavity 8 or the lubricating oil to leak downward into other structures, thereby ensuring the stability of the rotation of the bearing 4, avoiding the situation where the bearing 4 is contaminated by the food slurry or the lubrication fails, causing noise or even jamming during its rotation, thereby improving the stability of the whole machine.

[0039] It should be noted that the present application does not specifically limit the molding of the mounting seat, which can be a separate structural component and the mounting seat is connected to the heating plate 1 by a connector or welding, etc., as a preferred embodiment of the present application, such as Figure 2 As shown, the mounting base and the heating plate 1 are integrally formed.

[0040] It should also be noted that the present application does not specifically limit the forming of the pressure relief channel, which may be any one of the following embodiments:

[0041] Example 1: Figure 2 , Figure 5 As shown, in this embodiment, the mounting seat includes a surrounding plate 3 arranged outside the bearing 4 and the shaft seal, and the pressure relief channel includes a pressure relief port 31 provided on the surrounding plate 3, and the pressure relief port 31 is connected to the outside.

[0042] It should be noted that if Figure 2 As shown, in this embodiment, the enclosure 3 extends downward from the bottom wall of the heating plate 1, and is raised on the heating plate 1 above the cavity enclosed by the enclosure 3 to form a mounting protrusion 11 connected to the cavity, and the mounting seat includes the above-mentioned mounting protrusion 11 and the enclosure 3. Of course, the mounting seat is not limited to the above-mentioned setting, and it can also be that only the enclosure 3 extending downward is provided on the bottom wall of the heating plate 1, and the enclosure 3 forms the mounting seat; it can also be that the middle part of the heating plate 1 is raised to form the mounting protrusion 11, and the mounting protrusion 11 forms the mounting seat, which will not be repeated here.

[0043] By setting the pressure relief channel to include the pressure relief port 31 set on the enclosure 3, and the pressure relief port 31 is connected to the outside, after the air pressure in the installation cavity 8 increases, the gas can be discharged to the outside through the pressure relief port 31, thereby ensuring the pressure balance inside and outside the installation cavity 8, and effectively avoiding the situation in which the upper and lower shaft seals 7 are pushed open due to the increase in air pressure in the installation cavity 8, causing abnormal rotation of the bearing 4, thereby ensuring the smooth rotation of the bearing 4.

[0044] As a preferred embodiment of this embodiment, Figure 2 As shown, the knife holder also includes a heat-insulating sleeve 2 arranged below the heating plate 1, and the heat-insulating sleeve 2 abuts against the lower shaft seal 7. The knife holder also includes a seal 10 arranged between the enclosure 3 and the heat-insulating sleeve 2. The seal 10 includes a first sealing portion 101 clamped between the bottom end of the enclosure 3 and the top wall of the heat-insulating sleeve 2 and a second sealing portion 102 arranged on the outside of the enclosure 3. The pressure relief channel also includes an exhaust port 1021 arranged on the second sealing portion 102 and radially aligned with the pressure relief port 31.

[0045] By arranging the heat insulating sleeve 2 under the heating disk 1, the heating disk 1 is separated from the main unit, which effectively prevents the heat on the heating disk 1 from being transferred to the main unit in large quantities, resulting in a significant temperature rise of the main unit. At the same time, the knife seat also includes a seal 10 arranged between the enclosure 3 and the heat insulating sleeve 2, so that the enclosure 3 and the heat insulating sleeve 2 can further improve the tightness of the connection and cooperation between the two with the help of the seal 10, effectively prevent the lubricating oil in the installation cavity 8 from overflowing outward, further ensure the stability of the rotation of the bearing 4, and at the same time, with the help of the deformation performance of the seal 10, offset the errors of the enclosure 3 and the heat insulating sleeve 2 during production and assembly, and further improve the assembly effect. In addition, the second sealing part 102 is provided with an exhaust port 1021 radially aligned with the pressure relief port 31, so that the seal 10 can achieve sealing while also exhausting air into the accommodating cavity 9 through the exhaust port 1021, ensuring smooth exhaust, and avoiding the second sealing part 102 blocking the pressure relief port 31, resulting in poor exhaust or even no exhaust.

[0046] As another preferred embodiment of the present invention, Figure 2 , Figure 3 As shown, the knife seat also includes an insulating sleeve 2 arranged below the heating plate 1, the insulating sleeve 2 abuts against the lower shaft seal 7, the insulating sleeve 2 is provided with a rib 22 extending upward and surrounding the outer side of the enclosure 3, and the pressure relief channel also includes an exhaust gap formed between the rib 22 and the enclosure 3 to connect the pressure relief port 31 with the outside.

[0047] The heat insulation sleeve 2 is provided with a rib 22 extending upward and surrounding the outer side of the enclosure 3, so that when the heat insulation sleeve 2 and the heating plate 1 are matched, the stability of the connection between the two can be improved through the limiting effect of the rib 22 and the enclosure 3, avoiding the lateral relative displacement between the two, thereby further improving the sealing effect of the installation cavity 8. At the same time, the pressure relief channel also includes an exhaust gap formed between the rib 22 and the enclosure 3 to connect the pressure relief port 31 and the accommodating cavity 9, so that the rib 22 can not only limit the enclosure 3, but also exhaust the gap to connect the pressure relief port 31 with the outside world, thereby ensuring the smoothness of the pressure relief of the installation cavity 8.

[0048] It should be noted that the present application does not specifically limit the forming of the exhaust gap in this embodiment, and it can be any one of the following embodiments:

[0049] Embodiment 1: In this embodiment, the inner wall of the rib 22 is concave to form an exhaust groove which is radially aligned with the pressure relief port 31 and axially extends to the top of the rib 22 , and the exhaust gap includes the exhaust groove.

[0050] By forming an exhaust groove in the inner wall of the rib 22, which is radially aligned with the pressure relief port 31 and axially extends to the top of the rib 22, the rib 22 can be abutted against the enclosure 3, which helps to further improve the stability of the connection between the two and further avoid the relative displacement between the two, which leads to the deterioration or even failure of the sealing effect of the installation cavity 8. At the same time, the setting of the exhaust groove allows the gas to be directly discharged through the exhaust groove after passing through the pressure relief port 31 to achieve pressure relief, ensuring the smoothness of the pressure relief of the installation cavity 8.

[0051] Embodiment 2: In this embodiment, the ribs 22 and the enclosure 3 are gap-matched to form an exhaust gap.

[0052] By matching the gap between the ribs 22 and the enclosure 3 to form an exhaust gap, the forming of the exhaust gap is simplified, which helps to reduce the production cost of the insulation sleeve 2 and improve its production efficiency.

[0053] Example 2: Figure 3 As shown, in this embodiment, the knife holder also includes an insulating sleeve 2 arranged below the heating disk 1, the insulating sleeve 2 abuts against the lower shaft seal 7, the heating disk 1 and the insulating sleeve 2 are sealed and cooperated to form a accommodating cavity 9, and the insulating sleeve 2 is provided with an exhaust channel connecting the installation cavity 8 and the accommodating cavity 9, so that the accommodating cavity 9 is connected with the outside through the pressure relief channel and the exhaust channel.

[0054] By providing an exhaust channel connecting the installation cavity 8 and the accommodating cavity 9 on the insulation sleeve 2, when the food processor is working, the heat generated by the heating plate 1 causes the gas in the accommodating cavity 9 to expand due to the heat. The gas can then enter the installation cavity 8 through the exhaust channel and be discharged outwardly through the pressure relief channel, thereby ensuring the pressure balance inside and outside the accommodating cavity 9 and the installation cavity 8, and realizing the reuse of the pressure relief channel. Compared with the existing method of providing a separate air hole on the insulation sleeve 2 and providing a waterproof and breathable membrane at the air hole, the overall structure of the knife seat can be simplified, the step of opening an air hole on the heating plate 1 or the insulation sleeve 2 is eliminated, and the situation where the stability of the knife seat structure is reduced due to the opening of the air hole is avoided, thereby ensuring the overall strength of the knife seat.

[0055] Furthermore, if Figure 3 As shown, the heat-insulating sleeve 2 is provided with a first avoidance hole 21 for the knife shaft 5 to pass through, and the first avoidance hole 21 and the heat-insulating sleeve 2 are gap-matched to form a pressure relief channel.

[0056] By providing a first avoidance hole 21 for the knife shaft 5 to pass through in the insulation sleeve 2, and the first avoidance hole 21 and the insulation sleeve 2 are gap-matched to form a pressure relief channel, the gas in the installation cavity 8 and the accommodating cavity 9 can be discharged outward through the pressure relief channel formed between the first avoidance hole 21 and the insulation sleeve 2 after being heated and expanded, thereby ensuring smooth pressure relief.

[0057] Furthermore, if Figure 3 As shown, the shaft seal includes an upper shaft seal 6 arranged above the bearing 4 and a lower shaft seal 7 arranged below the bearing 4. The lower shaft seal 7 is provided with a second avoidance hole for the knife shaft 5 to pass through. The second avoidance hole is provided with an annular pressure relief rib 71 inclined downward and abutting against the knife shaft 5. The pressure relief rib 71 is constructed to operate under the pressure difference between the installation cavity 8 and the outside world to switch from a closed state to an open state.

[0058] By providing an annular pressure relief rib 71 inclined downward and abutting against the blade shaft 5 at the second avoidance hole, the pressure relief rib 71 is constructed to operate under the pressure difference between the installation cavity 8 and the outside to switch from a closed state to an open state, so that the pressure relief seam can only be opened to achieve pressure relief when the pressure in the pressure relief channel is greater than the outside pressure, thereby avoiding the situation where the pressure relief seam is always open, causing external water stains to enter the pressure relief channel through it, thereby improving the waterproof performance.

[0059] It should be noted that the pressure relief rib 71 in the present application is not limited to being set at the second avoidance hole, it can also be set at the first avoidance hole 21. The first avoidance hole 21 is provided with a pressure relief rib inclined downward and abutting against the knife shaft 5, or the pressure relief rib 71 can be set at both the first avoidance hole 21 and the second avoidance hole, which will not be repeated here.

[0060] As a preferred embodiment of this embodiment, a waterproof and breathable membrane is also provided in the pressure relief channel.

[0061] By providing a waterproof and breathable membrane in the pressure relief channel, on the one hand, the waterproof and breathable ability of the pressure relief channel can be further improved to prevent external water stains from entering the pressure relief channel and entering the installation cavity 8 through the pressure relief channel; on the other hand, the waterproof and breathable plug blocks external stains, thereby ensuring the cleanliness of the pressure relief channel and effectively preventing the accumulation of dirt in the pressure relief channel, which may reduce or even prevent the exhaust from occurring, thereby ensuring the stability of the pressure relief channel.

[0062] It can be understood that the pressure relief channels in the above two embodiments have different functions in different embodiments. Specifically, the pressure relief channel in embodiment 1 can be regarded as the exhaust channel in embodiment 2. And when the air pressure in the installation cavity 8 increases and the pressure in the accommodation cavity 9 is low, the gas in the installation cavity 8 can be discharged into the accommodation cavity 9 through the exhaust channel. At this time, the exhaust channel in this embodiment can also be regarded as a pressure relief channel, which will not be repeated here.

[0063] As a preferred implementation of the present application, Figure 3 As shown, the knife holder also includes an insulating sleeve 2 arranged below the heating plate 1. The heating plate 1 and the insulating sleeve 2 are sealed together to form a accommodating cavity 9. The heating plate 1 and the insulating sleeve 2 are connected by a connecting structure, and the connecting structure is provided with a ventilation channel connecting the accommodating cavity 9 with the outside.

[0064] By providing a pressure relief channel connecting the accommodating chamber 9 with the outside world in the connecting structure, the heat generated by the heating plate 1 during operation of the food processor causes the internal gas to expand due to the heat, and then it can be discharged to the outside through the pressure relief channel to ensure the pressure balance inside and outside. Compared with the existing method of setting a separate air vent and setting a waterproof breathable membrane at the air vent, on the one hand, it can simplify the overall structure of the knife seat, eliminating the step of opening an air vent on the heating plate 1 or the insulation sleeve 2, and at the same time, when the heating plate 1 is connected and matched with the insulation sleeve 2, a pressure relief channel can be formed at the connecting structure, which helps to improve the production efficiency of the knife seat and reduce the production cost, and avoids the situation where the stability of the knife seat structure is reduced due to the opening of the air vent, and ensures the overall strength of the knife seat; on the other hand, the extension path of the pressure relief channel at the connecting structure is relatively tortuous, which can achieve pressure relief and waterproof at the same time. Compared with setting a waterproof breathable membrane, it avoids the situation where it is easily damaged and loses its waterproof function, ensures waterproof performance, and improves the stability of the whole machine.

[0065] The technical solution protected by the present utility model is not limited to the above-mentioned embodiments. It should be pointed out that the combination of the technical solution of any embodiment with the technical solution of one or more other embodiments is within the protection scope of the present utility model. Although the present utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to it based on the present utility model. Therefore, these modifications or improvements made without departing from the spirit of the present utility model are within the scope of protection claimed by the present utility model.

Claims

1. A food processing machine with stable operation, comprising a main machine and a cup assembly, wherein the cup assembly comprises a cup body with upper and lower openings and a knife seat provided at the lower opening of the cup body, wherein the knife seat comprises a heating plate, and is characterized in that: A stirring blade assembly is provided in the middle of the heating plate, and the stirring blade assembly includes a mounting seat formed with a mounting cavity, a bearing arranged in the mounting cavity, a shaft seal, and a blade shaft passing through the bearing and the shaft seal, the shaft seal includes an upper shaft seal arranged above the bearing and a lower shaft seal arranged below the bearing, the upper shaft seal and the lower shaft seal seal the mounting cavity, and the mounting seat is provided with a pressure relief channel connecting the mounting cavity with the outside.

2. A food processing machine with stable operation according to claim 1, characterized in that: The mounting seat includes a surrounding plate arranged around the outer sides of the bearing and the shaft seal, and the pressure relief passage includes a pressure relief port arranged on the surrounding plate, and the pressure relief port is communicated with the outside.

3. A food processing machine with stable operation according to claim 2, characterized in that: The knife seat also includes a heat-insulating sleeve arranged below the heating plate, and the heat-insulating sleeve abuts against the lower shaft seal. The knife seat also includes a seal arranged between the enclosure and the heat-insulating sleeve, and the seal includes a first sealing portion clamped between the bottom end of the enclosure and the top wall of the heat-insulating sleeve and a second sealing portion arranged around the outside of the enclosure. The pressure relief channel also includes an exhaust port arranged on the second sealing portion and radially aligned with the pressure relief port.

4. A food processing machine with stable operation according to claim 2, characterized in that: The knife seat also includes a heat-insulating sleeve arranged below the heating plate, the heat-insulating sleeve abuts against the bottom of the lower shaft seal, the heat-insulating sleeve is provided with a rib extending upward and surrounding the outside of the enclosure, and the pressure relief channel also includes an exhaust gap formed between the rib and the enclosure to connect the pressure relief port with the outside.

5. A food processing machine with stable operation according to claim 4, characterized in that: The inner wall of the rib is concavely formed with an exhaust groove which is radially aligned with the pressure relief port and axially extends to the top of the rib, and the exhaust gap includes the exhaust groove; or The ribs cooperate with the enclosure gap to form the exhaust gap.

6. A food processing machine with stable operation according to claim 1, characterized in that: The knife seat also includes a heat-insulating sleeve arranged below the heating disk, the heat-insulating sleeve abuts against the bottom of the lower shaft seal, the heating disk and the heat-insulating sleeve are sealed and cooperated to form a accommodating cavity, and the heat-insulating sleeve is provided with an exhaust passage connecting the installation cavity and the accommodating cavity, so that the accommodating cavity is connected with the outside through the pressure relief passage and the exhaust passage.

7. A food processing machine with stable operation according to claim 6, characterized in that: The heat-insulating sleeve is provided with a first avoidance hole for the knife shaft to pass through, and the first avoidance hole and the heat-insulating sleeve are gap-matched to form the pressure relief channel.

8. A food processing machine with stable operation according to claim 7, characterized in that: The lower shaft seal is provided with a second avoidance hole for the knife shaft to pass through, and the second avoidance hole is provided with an annular pressure relief rib inclined downward and abutting against the knife shaft, and the pressure relief rib is constructed to operate under the pressure difference between the installation cavity and the outside world to switch from a closed state to an open state.

9. A food processing machine with stable operation according to claim 7, characterized in that: A waterproof and breathable membrane is also provided in the pressure relief channel.

10. A food processing machine with stable operation according to claim 1, characterized in that: The knife seat also includes a heat-insulating sleeve arranged below the heating plate, the heating plate and the heat-insulating sleeve are sealed and matched to form a receiving cavity, the heating plate and the heat-insulating sleeve are connected by a connecting structure, and the connecting structure is provided with a ventilation channel connecting the receiving cavity with the outside.

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