Food processor with simplified structure

Abstract

The utility model discloses a food processor with a simplified structure, which relates to the field of life electric appliances and comprises a main machine and a cup body component, a cutter holder comprises a heating disc and a heat insulation sleeve, a stirring cutter component is arranged in the middle of the heating disc and comprises a coaming, a bearing, a shaft seal and a cutter shaft, the bearing and the shaft seal are arranged in the coaming, and the cutter shaft penetrates through the bearing and the shaft seal. The shaft seal comprises a lower shaft seal arranged below the bearing, the heat insulation sleeve is provided with a boss extending upwards, the boss abuts against the bottom end of the surrounding plate, the outer side wall of the lower shaft seal abuts against the inner wall of the surrounding plate, the bottom wall of the lower shaft seal abuts against the boss, and sealing of the interior of the heat insulation sleeve and sealing of the bearing are achieved through one lower shaft seal. Compared with a traditional structure needing two sealing rings to achieve different sealing effects, the tool apron has the advantages that the sealing effect is guaranteed, meanwhile, the number of parts is reduced, the structure of the tool apron is simplified, the improvement of the structural compactness of the tool apron is facilitated, meanwhile, assembly by assembly personnel is facilitated, the improvement of the assembly efficiency is facilitated, and the production cost is reduced.

Description

Technical Field

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

[0002] Existing food processors usually include a main unit and a cup assembly. The cup assembly is provided with a stirring element that is transmission-connected to a motor in the main unit. When a user uses the food processor to process food, the user places the food in the cup assembly, and then the motor drives the stirring element at high speed to process the food. In order to improve the function of the food processor, a heating plate is usually provided under the cup body, and the food in the cup body is heated by the heat generated by the heating plate. At the same time, in order to prevent a large amount of heat from the heating plate from being transferred to the main unit, a heat insulating sleeve is provided under the heating plate to separate the main unit from the heating plate. However, after the heat insulating sleeve is connected to the heating plate, there will be a gap between the two, and there will also be a gap between the through hole on the heat insulating sleeve for the knife shaft to pass through and the knife shaft. In order to prevent food slurry from entering the bearing and the heat insulating sleeve through the two gaps during food processing, the existing patent discloses a stirring knife seat assembly, which is provided with sealing rings between the heat insulating sleeve and the knife shaft and between the heat insulating sleeve and the heating plate to prevent food slurry from entering the bearing and the heat insulating sleeve. At the same time, in order to better clean the cup body and the knife seat, the knife seat is usually provided with a detachable connection with the cup body. When the knife seat is removed and soaked for cleaning, the sealing requirement for the knife seat is greater. However, the above-mentioned knife holder has more integral parts and a more complicated structure, which increases the manufacturing cost of the whole machine. In addition, the assemblers have more assembly steps during assembly, resulting in low assembly efficiency. In addition, as the number of structural parts increases, the sealing effect of the knife holder becomes worse, which can easily cause water stains to enter the knife holder during cleaning. Utility Model Content

[0003] The purpose of the utility model is to provide a food processing machine with a simplified structure, so as to solve the problem that the existing food processing machine has multiple structures for sealing the insulation sleeve and the heating plate, which leads to the complex overall structure of the knife seat, resulting in increased manufacturing costs, low assembly efficiency and poor sealing effect.

[0004] To achieve the above-mentioned purpose, the utility model provides a food processing machine with a simplified structure, 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 opening at the lower end of the cup body, the knife seat including a heating plate and a heat insulating sleeve arranged below the heating plate, a stirring knife assembly is provided in the middle of the heating plate, the stirring knife assembly includes an enclosure extending downward from the bottom wall of the heating plate, a bearing and a shaft seal arranged in the enclosure, and a knife 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 heat insulating sleeve is provided with an upwardly extending boss, the boss abuts against the bottom end of the enclosure, the outer wall of the lower shaft seal abuts against the inner wall of the enclosure, and the bottom wall abuts against the boss.

[0005] The present application provides an upwardly extending boss on the insulation sleeve, the boss abuts against the bottom end of the enclosure, and the outer wall of the lower shaft seal abuts against the inner wall of the enclosure, and the bottom wall abuts against the boss, so that the bottom wall of the lower shaft seal and the top wall of the boss achieve a first layer of sealing, and at the same time, the top surface of the boss and the bottom surface of the enclosure achieve a second layer of sealing, thereby achieving a double sealing effect in the insulation sleeve, effectively preventing slurry or food from entering the insulation sleeve through the gap between the lower shaft seal and the boss during food processing, causing internal components to become damp or even damaged, thereby improving the protection of components in the insulation sleeve, and at the same time, the outer wall of the lower shaft seal abuts against the inner wall of the enclosure to achieve The seal on the top of the lower shaft seal is thus prevented from entering the enclosure, causing the bearing to rotate unsmoothly and generate rotation noise or even jam, thereby ensuring the stability of the bearing rotation, that is, the sealing inside the insulation sleeve and the bearing are achieved through a lower shaft seal. Compared with the traditional structure that requires two sealing rings to achieve different sealing effects, the number of parts is reduced while ensuring the sealing effect, so that the structure of the knife holder is simplified, which helps to improve the compactness of the knife holder structure, and is convenient for assembly personnel to assemble, which helps to improve assembly efficiency and reduce production costs. Preferably, the knife holder is detachably connected to the cup body, which is convenient for users to clean the knife holder, and can ensure that the knife holder is cleaned more thoroughly, avoiding the situation where dirt accumulates on the knife holder for a long time, causing the knife holder to produce odor or even mold, and the sealing of the knife holder after the structure is simplified is further improved, which can prevent cleaning water from entering the knife holder, thereby protecting the various components in the knife holder.

[0006] In a preferred implementation of a food processor with a simplified structure, the top wall of the boss is further provided with a positioning ring extending upward, the positioning ring extends to the inner side of the enclosure plate and abuts against the lower shaft seal.

[0007] By providing an upwardly extending positioning ring on the top wall of the boss, and the positioning ring extending to the inner side of the enclosure and abutting against the lower shaft seal, on the one hand, after the positioning ring abuts against the lower shaft seal, the contact surface between the positioning ring and the lower shaft seal and the contact surface between the boss and the enclosure are not on the same plane, so that even if food slurry can pass through the contact surface between the positioning ring and the lower shaft seal, it needs to pass through the bent channel to enter between the boss and the enclosure when moving between the boss and the enclosure, thereby greatly improving the sealing performance of the lower shaft seal; on the other hand, the top surface of the positioning ring increases the height of the top surface of the boss, so that even if the slurry passes through the through hole for the knife shaft to pass through, it needs to pass over the higher positioning ring to contact the lower shaft seal, thereby blocking the food slurry, which helps to further improve the blocking and sealing effect of the slurry.

[0008] In a preferred implementation of a food processing machine with a simplified structure, the lower shaft seal includes a shaft seal portion extending laterally and a sealing portion connected to the outer periphery of the shaft seal portion and extending vertically, and the sealing portion is clamped between the positioning ring and the enclosure plate.

[0009] By setting the sealing part to be clamped between the positioning ring and the enclosure, the inner side wall of the sealing part and the inner side wall of the positioning ring are abutted and sealed, the bottom wall and the top surface of the boss are abutted and sealed, and the outer side wall and the inner side wall of the enclosure are abutted and sealed, thereby achieving triple sealing of the lower shaft seal, further improving the sealing effect of the lower shaft seal, and further preventing slurry and the like from entering the insulation sleeve or the bearing. At the same time, the clamping of the sealing part by the positioning ring and the enclosure improves the limiting effect of the lower shaft seal, ensures the stability of its position, and avoids the displacement of the lower shaft seal after long-term use, which causes the lower shaft seal to deteriorate or even fail in sealing effect, which helps to further improve the sealing stability of the lower shaft seal.

[0010] In a preferred implementation of a food processor with a simplified structure, the outer side wall of the positioning ring abuts against the inner wall of the enclosure.

[0011] By setting the outer wall of the positioning ring to abut against the inner wall of the enclosure, the top wall of the positioning ring and the bottom wall of the lower shaft seal realize the first layer of sealing, the outer wall of the positioning ring and the inner wall of the enclosure realize the second layer of sealing, and the bottom wall of the enclosure and the top wall of the boss realize the third layer of sealing, which further improves the sealing effect. At the same time, the positioning ring can also realize the positioning of the enclosure, so that the heat insulation sleeve can be accurately installed with the help of the positioning of the positioning ring and the enclosure during installation, thereby ensuring the coaxiality of the heat insulation sleeve and the heating plate, and avoiding the situation where the coaxiality between the heat insulation sleeve and the heating plate is low, causing the knife shaft to swing when rotating, resulting in poor crushing effect.

[0012] In a preferred implementation of a food processor with a simplified structure, the lower shaft seal includes a laterally extending shaft seal portion and a sealing portion connected to the outer periphery of the shaft seal portion and extending vertically, and the sealing portion includes a first sealing section extending upward from the outer periphery of the shaft seal portion and a second sealing section extending downward from the outer periphery of the shaft seal portion.

[0013] By configuring the sealing portion to include a first sealing section extending upward from the outer circumference of the shaft sealing portion and a second sealing section extending downward from the outer circumference of the shaft sealing portion, the axial dimension of the sealing portion is extended, thereby increasing the contact area between the sealing portion and the inner side wall of the enclosure, which helps to further improve the sealing effect.

[0014] In a preferred implementation of a food processing machine with a simplified structure, a supporting framework is provided in the shaft sealing portion and the first sealing section.

[0015] By providing a supporting frame in the shaft sealing part and the first sealing section, after the enclosure abuts against the first sealing section, the force applied by the enclosure to the first sealing section can be transmitted to the shaft sealing part through the supporting frame, thereby ensuring the sealing effect of the shaft sealing part on the knife shaft while also ensuring the sealing of the first sealing section and the enclosure, which helps to further improve the sealing effect.

[0016] In a preferred implementation of a food processor with a simplified structure, the lower shaft seal includes a laterally extending shaft seal portion and a sealing portion connected to the outer periphery of the shaft seal portion and extending vertically, the sealing portion extends upward from the outer periphery of the shaft seal portion, and the bottom wall of the shaft seal portion abuts against the top wall of the boss, and the outer side wall of the sealing portion abuts against the enclosure.

[0017] By arranging the sealing part to extend upward from the outer circumference of the shaft sealing part, and the bottom wall of the shaft sealing part abuts against the top wall of the boss, and the outer side wall of the sealing part abuts against the enclosure, the contact area between the shaft sealing part and the top wall of the boss is greatly increased, which in turn helps to improve the sealing effect between the lower shaft seal and the boss, and helps to further prevent slurry and the like from entering the insulation sleeve or the bearing.

[0018] In a preferred implementation of a food processing machine with a simplified structure, an outer side wall and / or a bottom wall of the lower shaft seal is provided with sealing ring ribs.

[0019] By providing sealing ring ribs on the outer side wall and / or bottom wall of the lower shaft seal, the sealing effect between the lower shaft seal and the inner side wall of the enclosure plate and / or the top wall of the boss is further improved through the sealing ring ribs.

[0020] In a preferred implementation of a food processor with a simplified structure, a retaining spring is further provided between the bearing and the lower shaft seal, and the lower shaft seal is clamped between the retaining spring and the boss.

[0021] By providing a retaining spring between the bearing and the lower shaft seal, and the lower shaft seal being clamped between the retaining spring and the boss, the lower shaft seal can be limited by the abutment of the retaining spring, and the tightness of the fit between the bottom wall of the lower shaft seal and the top wall of the boss can be improved by the downward pressure of the lower shaft seal. At the same time, the limiting effect of the lower shaft seal can be improved, the stability of its position can be ensured, and the situation that the displacement of the lower shaft seal after long-term use causes the sealing effect of the lower shaft seal to deteriorate or even fail can be avoided, which helps to further improve the sealing stability of the lower shaft seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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:

[0023] Figure 1 This is a schematic structural diagram of a knife holder in one embodiment of the utility model;

[0024] Figure 2 A cross-sectional view of a knife holder in one embodiment of the utility model;

[0025] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0026] Figure 4This is an exploded view of a knife holder in one embodiment of the utility model;

[0027] Figure 5 This is a schematic structural diagram of a heat insulation sleeve in one embodiment of the utility model;

[0028] Figure 6 It is a cross-sectional view of the lower shaft seal in one embodiment of the utility model.

[0029] List of parts and reference numerals:

[0030] 1-heating plate, 11-enclosure; 2-insulating sleeve, 21-boss, 211-positioning ring; 3-knife shaft; 4-bearing; 5-lower shaft seal, 51-shaft seal part, 52-sealing part, 521-first sealing section, 522-second sealing section, 53-support frame, 54-sealing ring rib; 6-circlip; 7-upper shaft seal. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] like Figures 1 to 6 As shown, the utility model provides a food processing machine with a simplified structure, 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 and a heat insulation sleeve 2 arranged below the heating plate 1, a stirring knife assembly is arranged in the middle of the heating plate 1, the stirring knife assembly includes a surrounding plate 11 extending downward from the bottom wall of the heating plate 1, a bearing 4 arranged in the surrounding plate 11, a shaft seal and a knife shaft 3 passing through the bearing 4 and the shaft seal, the shaft seal includes an upper shaft seal 7 arranged above the bearing 4 and a The lower shaft seal 5 and the insulation sleeve 2 are provided with an upwardly extending boss 21, the boss 21 abuts against the bottom end of the enclosure 11, and the outer wall of the lower shaft seal 5 abuts against the inner wall of the enclosure 11, and the bottom wall abuts against the boss 21. It should be noted that the abutment between the above-mentioned structures can be direct contact between surfaces, or indirect contact with the aid of other structures such as shock-absorbing pads. Preferably, the abutment between the boss 21 and the bottom end of the enclosure 11 is the abutment between the top surface of the boss 21 and the bottom surface of the enclosure 11. The abutment makes the fixation between the components more secure and the sealing more reliable.

[0034] The present application provides an upwardly extending boss 21 on the heat insulating sleeve 2, the boss 21 abuts against the bottom end of the enclosure 11, and the outer wall of the lower shaft seal 5 abuts against the inner wall of the enclosure 11, and the bottom wall abuts against the boss 21, so that the bottom wall of the lower shaft seal 5 and the top wall of the boss 21 realize a first layer of sealing, and at the same time, the top surface of the boss 21 and the bottom surface of the enclosure 11 realize a second layer of sealing, thereby achieving a double sealing effect in the heat insulating sleeve 2, effectively preventing slurry or food from entering the heat insulating sleeve 2 through the gap between the lower shaft seal 5 and the boss 21 during food processing, causing the internal parts to become damp or even damaged, thereby improving the protection of the parts in the heat insulating sleeve 2, and at the same time, the outer wall of the lower shaft seal 5 and the enclosure The inner wall of the plate 11 abuts against the lower shaft seal 5 to achieve sealing above the lower shaft seal 5, thereby preventing food slurry and the like from entering the enclosure 11, causing the bearing 4 to rotate unsmoothly and generate rotation noise or even jamming, thereby ensuring the stability of the bearing 4 rotation, that is, the sealing of the inside of the heat insulation sleeve 2 and the sealing of the bearing 4 are achieved through a lower shaft seal 5. Compared with the traditional structure that requires two sealing rings to achieve different sealing effects, the number of parts is reduced while ensuring the sealing effect, so that the structure of the knife seat is simplified, which helps to improve the compactness of the knife seat structure, and is convenient for assembly personnel to assemble, which helps to improve assembly efficiency and reduce production costs. Preferably, the knife seat is detachably connected to the cup body, which is convenient for users to clean the knife seat, can ensure that the knife seat is cleaned more thoroughly, and avoid the knife seat from accumulating dirt for a long time, which causes the knife seat to produce odor or even mold, and the sealing of the knife seat after the structure is simplified is further improved, which can prevent cleaning water and the like from entering the knife seat, thereby protecting the various components in the knife seat.

[0035] It should be noted that the molding of the enclosure 11 is not specifically limited in the present application. It can be a separate structural component and the enclosure 11 is connected to the heating plate 1 by a connector or welding. As a preferred embodiment of the present application, Figure 2 As shown, the enclosure 11 and the heating plate 1 are formed integrally.

[0036] As a preferred implementation of the present application, Figure 2 , Figure 3 As shown, the top wall of the boss 21 is further provided with a positioning ring 211 extending upward, and the positioning ring 211 extends to the inner side of the enclosure 11 and abuts against the lower shaft seal 5 .

[0037] By further providing a positioning ring 211 extending upward on the top wall of the boss 21, and the positioning ring 211 extending to the inner side of the enclosure 11 and abutting against the lower shaft seal 5, on the one hand, after the positioning ring 211 abuts against the lower shaft seal 5, the contact surface of the positioning ring 211 and the lower shaft seal 5 and the contact surface of the boss 21 and the enclosure 11 are not on the same plane, so that even if food slurry can pass through the contact surface between the positioning ring 211 and the lower shaft seal 5, it needs to pass through the bent channel when moving between the boss 21 and the enclosure 11 to enter between the boss 21 and the enclosure 11, which greatly improves the sealing performance of the lower shaft seal 5; on the other hand, the top surface of the positioning ring 211 increases the height of the top surface of the boss 21, so that even if the slurry passes through the through hole for the knife shaft 3 to pass through, it needs to pass over the higher positioning ring 211 to contact with the lower shaft seal 5, thereby blocking the food slurry, which helps to further improve the blocking and sealing effect of the slurry.

[0038] It should be noted that the present application does not specifically limit the abutting relationship between the positioning ring 211 and the lower shaft seal 5, which can be any one of the following embodiments:

[0039] Example 1: Figure 3 As shown, in this embodiment, the lower shaft seal 5 includes a laterally extending shaft seal portion 51 and a sealing portion 52 connected to the outer periphery of the shaft seal portion 51 and extending vertically, and the sealing portion 52 is clamped between the positioning ring 211 and the enclosure 11 .

[0040] By setting the sealing part 52 to be clamped between the positioning ring 211 and the enclosure 11, the inner wall of the sealing part 52 and the inner wall of the positioning ring 211 are abutted and sealed, the bottom wall and the top surface of the boss 21 are abutted and sealed, and the outer wall and the inner wall of the enclosure 11 are abutted and sealed, thereby achieving triple sealing of the lower shaft seal 5, further improving the sealing effect of the lower shaft seal 5, and further preventing slurry and the like from entering the insulation sleeve 2 or the bearing 4. At the same time, the clamping of the sealing part 52 by the positioning ring 211 and the enclosure 11 improves the limiting effect of the lower shaft seal 5, ensures the stability of its position, avoids the displacement of the lower shaft seal 5 after long-term use, resulting in the deterioration or even failure of the sealing effect of the lower shaft seal 5, and helps to further improve the sealing stability of the lower shaft seal 5.

[0041] Embodiment 2: In this embodiment, the bottom wall of the lower shaft seal 5 abuts against the positioning ring 211 .

[0042] Furthermore, the outer wall of the positioning ring 211 abuts against the inner wall of the enclosure 11 .

[0043] By setting the outer wall of the positioning ring 211 to abut against the inner wall of the enclosure 11, the top wall of the positioning ring 211 and the bottom wall of the lower shaft seal 5 realize the first layer of sealing, the outer wall of the positioning ring 211 and the inner wall of the enclosure 11 realize the second layer of sealing, and the bottom wall of the enclosure 11 and the top wall of the boss 21 realize the third layer of sealing, which further improves the sealing effect. At the same time, the positioning ring 211 can also realize the positioning of the enclosure 11, so that the heat insulation sleeve 2 can be accurately installed with the help of the positioning of the positioning ring 211 and the enclosure 11 during installation, thereby ensuring the coaxiality of the heat insulation sleeve 2 and the heating plate 1, and avoiding the situation where the low coaxiality of the heat insulation sleeve 2 and the heating plate 1 causes the knife shaft 3 to swing when rotating, resulting in poor crushing effect.

[0044] It should be noted that the present application does not specifically limit the structure of the lower shaft seal 5, which may be any one of the following embodiments:

[0045] Example 1: Figure 3 As shown, in this embodiment, the lower shaft seal 5 includes a laterally extending shaft seal portion 51 and a sealing portion 52 connected to the outer periphery of the shaft seal portion 51 and extending vertically, and the sealing portion 52 includes a first sealing segment 521 extending upward from the outer periphery of the shaft seal portion 51 and a second sealing segment 522 extending downward from the outer periphery of the shaft seal portion 51.

[0046] By configuring the sealing portion 52 to include a first sealing section 521 extending upward from the outer circumference of the shaft sealing portion 51 and a second sealing section 522 extending downward from the outer circumference of the shaft sealing portion 51, the axial dimension of the sealing portion 52 is extended, thereby increasing the contact area between the sealing portion 52 and the inner wall of the enclosure 11, which helps to further improve the sealing effect.

[0047] Furthermore, if Figure 3 As shown, a support frame 53 is provided in the shaft sealing portion 51 and the first sealing section 521. Preferably, the shaft sealing portion 51 and the support frame 53 in the first sealing section 521 are integrally formed.

[0048] By providing a support frame 53 in the shaft sealing part 51 and the first sealing section 521, after the enclosure 11 abuts against the first sealing section 521, the force applied by the enclosure 11 to the first sealing section 521 can be transmitted to the shaft sealing part 51 through the support frame 53, thereby ensuring the sealing effect of the shaft sealing part 51 on the knife shaft 3 while also ensuring the sealing of the first sealing section 521 and the enclosure 11, which helps to further improve the sealing effect.

[0049] Embodiment 2: In this embodiment, the lower shaft seal 5 includes a laterally extending shaft seal portion 51 and a sealing portion 52 connected to the outer periphery of the shaft seal portion 51 and extending vertically. The sealing portion 52 extends upward from the outer periphery of the shaft seal portion 51, and the bottom wall of the shaft seal portion 51 abuts against the top wall of the boss 21, and the outer side wall of the sealing portion 52 abuts against the enclosure 11.

[0050] By setting the sealing portion 52 to extend upward from the outer periphery of the shaft sealing portion 51, and the bottom wall of the shaft sealing portion 51 abuts against the top wall of the boss 21, and the outer side wall of the sealing portion 52 abuts against the enclosure 11, the contact area between the shaft sealing portion 51 and the top wall of the boss 21 is greatly increased, which helps to improve the sealing effect between the lower shaft seal 5 and the boss 21, and helps to further prevent slurry and the like from entering the insulation sleeve 2 or the bearing 4.

[0051] As a preferred implementation of the present application, Figure 3 , Figure 6 As shown, the outer side wall and / or the bottom wall of the lower shaft seal 5 are provided with sealing ring ribs 54 . More preferably, both the outer side wall and the bottom wall of the lower shaft seal 5 are provided with sealing ring ribs 54 .

[0052] By providing a sealing ring rib 54 on the outer side wall and / or bottom wall of the lower shaft seal 5 , the sealing effect between the lower shaft seal 5 and the inner side wall of the enclosure 11 and / or the top wall of the boss 21 is further improved through the sealing ring rib 54 .

[0053] As a preferred implementation of the present application, Figure 3 As shown, a retaining spring 6 is further provided between the bearing 4 and the lower shaft seal 5 , and the lower shaft seal 5 is clamped between the retaining spring 6 and the boss 21 .

[0054] By further providing a retaining spring 6 between the bearing 4 and the lower shaft seal 5, and the lower shaft seal 5 being clamped between the retaining spring 6 and the boss 21, the lower shaft seal 5 can be limited by the abutment of the retaining spring 6, and the tightness of the fit between the bottom wall of the lower shaft seal 5 and the top wall of the boss 21 can be improved by means of the downward pressure of the lower shaft seal 5. At the same time, the limiting effect of the lower shaft seal 5 can be improved, the stability of its position can be ensured, and the situation that the displacement of the lower shaft seal 5 after long-term use causes the sealing effect of the lower shaft seal 5 to deteriorate or even fail can be avoided, which helps to further improve the sealing stability of the lower shaft seal 5.

[0055] 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 processor with a simplified structure, 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 arranged at the lower opening of the cup body, wherein the knife seat comprises a heating plate and a heat insulating sleeve arranged below the heating plate, wherein: A stirring blade assembly is provided in the middle of the heating plate, and the stirring blade assembly includes a surrounding plate extending downward from the bottom wall of the heating plate, a bearing arranged in the surrounding plate, 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 thermal insulation sleeve is provided with an upwardly extending boss, the boss abuts against the bottom end of the surrounding plate, and the outer side wall of the lower shaft seal abuts against the inner wall of the surrounding plate, and the bottom wall abuts against the boss.

2. A food processor with a simplified structure according to claim 1, characterized in that: The top wall of the boss is also provided with a positioning ring extending upward, and the positioning ring extends to the inner side of the enclosure plate and abuts against the lower shaft seal.

3. A food processor with a simplified structure according to claim 2, characterized in that: The lower shaft seal comprises a shaft seal portion extending transversely and a sealing portion connected to the outer periphery of the shaft seal portion and extending vertically, and the sealing portion is clamped between the positioning ring and the enclosure plate.

4. A food processor with a simplified structure according to claim 2, characterized in that: The bottom wall of the lower shaft seal abuts against the positioning ring.

5. A food processor with a simplified structure according to claim 4, characterized in that: The outer side wall of the positioning ring abuts against the inner wall of the enclosure plate.

6. A food processor with a simplified structure according to claim 1, characterized in that: The lower shaft seal comprises a laterally extending shaft seal portion and a sealing portion connected to the outer periphery of the shaft seal portion and extending vertically. The sealing portion comprises a first sealing section extending upward from the outer periphery of the shaft seal portion and a second sealing section extending downward from the outer periphery of the shaft seal portion.

7. A food processor with a simplified structure according to claim 6, characterized in that: A supporting framework is provided in the shaft sealing portion and the first sealing section.

8. A food processor with a simplified structure according to claim 1, characterized in that: The lower shaft seal includes a laterally extending shaft seal portion and a sealing portion connected to the outer periphery of the shaft seal portion and extending vertically, the sealing portion extends upward from the outer periphery of the shaft seal portion, and the bottom wall of the shaft seal portion abuts against the top wall of the boss, and the outer side wall of the sealing portion abuts against the enclosure.

9. A food processor with a simplified structure according to claim 1, characterized in that: The outer side wall and / or the bottom wall of the lower shaft seal are provided with sealing ring ribs.

10. A food processor with a simplified structure according to claim 1, characterized in that: A retaining spring is further provided between the bearing and the lower shaft seal, and the lower shaft seal is clamped between the retaining spring and the boss.

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