CN217449705U - Stirring shaft and stirrer with same - Google Patents

Abstract

The utility model discloses a (mixing) shaft and mixer that has it, the (mixing) shaft includes: the device comprises a hollow rod body, wherein two ends of the rod body are open; the rotating shaft is arranged in the rod body, and the output end of the rotating shaft extends out of the rod body; the sealing element is sleeved outside the rotating shaft and positioned in the rod body, the sealing element comprises an installation part, an installation space is defined between the installation part and the inner peripheral wall of the rotating shaft, the sealing element is provided with an annular sealing bulge, and the sealing bulge is in contact with the rotating shaft; and the bearing piece is sleeved outside the rotating shaft and is positioned in the installation space. The utility model discloses a (mixing) shaft can save the design of sealing washer, avoids appearing the problem that the sealing washer neglected loading, does benefit to and simplifies the installation, improves the installation effectiveness, and then improves the assembly qualification rate of (mixing) shaft, guarantees the quality uniformity of (mixing) shaft in the equipment process.

Description

Stirring shaft and stirrer with same

Technical Field

The utility model belongs to the technical field of domestic kitchen utensil technique and specifically relates to a (mixing) shaft and mixer that has it is related to.

Background

Among the prior art, the sealing mechanism of the puddler of handheld mixer is provided with the individual layer sealing washer, and this individual layer sealing washer needs to be fixed alone in the plastic cover, then parts such as installation bearing, lead to its installation more loaded down with trivial details, its installation effectiveness has been reduced, and when actual assembly, the sealing washer easily appears neglected loading and leads to the puddler the condition of leaking to appear, and then the assembly qualification rate that leads to its puddler is lower, the quality uniformity of puddler in the assembling process can't be guaranteed, there is the space of improvement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a stirring shaft, can save the design of sealing washer, avoid appearing the problem that the sealing washer neglected loading, do benefit to and simplify the installation, improve the installation effectiveness, and then improve the assembly qualification rate of (mixing) shaft, guarantee the quality uniformity of (mixing) shaft in the assembling process.

According to the utility model discloses (mixing) shaft of embodiment includes: the device comprises a hollow rod body, wherein two ends of the rod body are open; the rotating shaft is arranged in the rod body, and the output end of the rotating shaft extends out of the rod body; the sealing element is sleeved outside the rotating shaft and positioned in the rod body, the sealing element comprises an installation part, an installation space is defined between the installation part and the inner peripheral wall of the rotating shaft, the sealing element is provided with an annular sealing bulge, and the sealing bulge is in contact with the rotating shaft; and the bearing piece is sleeved outside the rotating shaft and is positioned in the installation space.

According to the utility model discloses (mixing) shaft, its sealing member is equipped with annular sealed arch, and sealed arch and axis of rotation contact, thereby can realize the sealed between axis of rotation and the sealing member, and the sealing member includes the installation department, make bearing spare can overcoat to (mixing) shaft on and be located the installation space between installation department and the axis of rotation, can be when realizing the sealed between axis of rotation and the sealing member promptly, can also satisfy the axis of rotation, assembly requirement between bearing spare and the sealing member, thereby be convenient for save the design of sealing washer, avoid the problem that the sealing washer neglected loading appears, do benefit to and simplify the installation, the installation effectiveness is improved, and then the assembly qualification rate of improvement (mixing) shaft, guarantee the quality uniformity of (mixing) shaft in the assembling process.

According to the utility model discloses (mixing) shaft of some embodiments, sealed arch is a plurality of, a plurality of sealed archs all with the axis of rotation contact.

According to the utility model discloses a (mixing) shaft of some embodiments, the sealing member still includes the sealing, the sealing is followed the axial extension of axis of rotation, the internal diameter of sealing is less than the internal diameter of installation department, sealed arch is located on the inner wall of sealing.

According to the stirring shaft of some embodiments of the present invention, the orientation of the sealing portion the end of the installation space and the orientation of the installation space are provided with a gap between the bottom wall of the sealing portion.

According to the utility model discloses a stirring shaft of some embodiments, the sealing member includes this somatic part, this somatic part with the installation department is connected, this somatic part pass through connecting portion with the sealing portion links to each other in the axial direction of sealing member, the axial length of connecting portion is less than respectively the axial length of this somatic part with the axial length of sealing portion.

According to some embodiments of the stirring shaft of the present invention, said sealing portion is provided adjacent to an output end of said rotation shaft.

According to the utility model discloses (mixing) shaft of some embodiments, the periphery wall of sealing member is equipped with ends to protruding, end to protruding end to in the inner wall of the body of rod.

According to some embodiments of the stirring shaft of the present invention, said stopping protrusion is formed in an annular structure; the stop bulges are multiple and are arranged at intervals along the axial direction of the sealing element.

According to the utility model discloses (mixing) shaft of some embodiments, the sealing member is the integrated into one piece.

According to the utility model discloses a (mixing) shaft of some embodiments still includes: fixing base and dustcoat, the fixing base with the dustcoat is fixed respectively extremely the both ends of the body of rod, the input of axis of rotation stretches into in the fixing base and be suitable for and be connected with the power component electricity, the output of axis of rotation stretches into in the dustcoat.

The utility model also provides a mixer.

According to the utility model discloses mixer, include: a mixing shaft as described in any of the above embodiments; a blade secured to the output end.

The stirrer has the same advantages as the stirring shaft compared with the prior art, and the description is omitted.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of a stirring shaft according to some embodiments of the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 2;

FIG. 4 is an exploded view of a mixing shaft according to some embodiments of the present invention;

fig. 5 is a schematic structural view of a seal according to some embodiments of the present invention.

Reference numerals are as follows:

the stirring shaft (100) is provided with a stirring shaft,

the length of the shaft body 10, the rotational shaft 20,

the seal member 30, the abutment projection 301, the mounting portion 31, the mounting space 311, the seal portion 32, the seal projection 321, the body portion 33, the connecting portion 34,

the cutting tool comprises a bearing piece 40, a fixed seat 50, an outer cover 60, a blade 70, a mounting hole 71, a buckle 80, a gasket 81, a first E-shaped meson 91 and a second E-shaped meson 92.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A stirring shaft 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 5.

As shown in fig. 4, a stirring shaft 100 according to an embodiment of the present invention includes: a hollow rod body 10, a rotating shaft 20, a sealing member 30 and a bearing member 40.

Specifically, the rod body 10 is configured as a hollow rod body 10, two ends of the rod body 10 are open, the rotating shaft 20 is arranged in the rod body 10, the output end of the rotating shaft 20 extends out of the rod body 10, the sealing element 30 is sleeved outside the rotating shaft 20 and is located in the rod body 10, the sealing element 30 comprises a mounting portion 31, a mounting space 311 is defined between the mounting portion 31 and the inner peripheral wall of the rotating shaft 20, the sealing element 30 is provided with an annular sealing protrusion 321, the sealing protrusion 321 is in contact with the rotating shaft 20, and the bearing element 40 is sleeved outside the rotating shaft 20 and is located in the mounting space 311.

It can be understood that the rotation shaft 20 is installed in the shaft body 10 so as to protect the rotation shaft 20 by the shaft body 10, and both ends of the rotation shaft 20 may extend out of the shaft body 10 to be connected with the power element and the output element, respectively, so as to reduce the difficulty of assembling the rotation shaft 20 and facilitate the rotation shaft 20 to transmit power.

Further, the sealing member 30 is sleeved on the radial outer side of the rotating shaft 20 and located in the rod body 10, that is, the sealing member 30 is located between the radial outer side of the rotating shaft 20 and the inner wall of the rod body 10, in other words, the sealing member 30 has an axial assembling space, the rotating shaft 20 can extend into the assembling space along the axial direction of the sealing member 30, and the sealing member 30 is located inside the rod body 10, so as to play a positioning and matching role on the rotating shaft 20 through the sealing member 30.

Wherein, sealing member 30 is equipped with annular sealed protruding 321, and sealed protruding 321 and the radial outside sealing contact of axis of rotation 20 to strengthen the leakproofness between sealing member 30 and the axis of rotation 20, avoid outside water to get into between axis of rotation 20 and the body of rod 10, reduce the risk that leaks.

Further, as shown in FIG. 3, the sealing member 30 includes a mounting portion 31, a mounting space 311 is defined between the mounting portion 31 and the rotating shaft 20, and the bearing member 40 is sleeved on the rotating shaft 20 and located in the mounting space 311. Preferably, the bearing member 40 is an oil bearing.

In other words, by providing the mounting portion 31 on the sealing member 30, the bearing member 40 can be mounted in the mounting space 311, so that in the actual assembly process, the assembly requirement between the rotating shaft 20, the bearing member 40 and the sealing member 30 can be satisfied by the sealing member 30, and at the same time, the sealing requirement between the rotating shaft 20 and the sealing member 30 can be satisfied by the annular sealing protrusion 321 provided on the sealing member 30.

Therefore, the utility model provides a sealing member 30 can save the design of the solitary sealing washer among the prior art to avoid appearing the problem that the sealing washer neglected loading, do benefit to and simplify the installation, improve the installation effectiveness, and then improve (mixing) shaft 100's assembly qualification rate, guarantee (mixing) shaft 100 quality uniformity in the assembling process.

According to the utility model discloses (mixing) shaft 100, its sealing member 30 is equipped with annular sealed protruding 321, and sealed protruding 321 and the contact of axis of rotation 20, thereby can realize the sealing between axis of rotation 20 and the sealing member 30, and sealing member 30 includes installation department 31, make bearing piece 40 can overcoat to (mixing) shaft 100 on and be located the installation space 311 between installation department 31 and the axis of rotation 20, can be when realizing the sealed between axis of rotation 20 and the sealing member 30 promptly through sealing member 30, can also satisfy axis of rotation 20, the assembly requirement between bearing piece 40 and the sealing member 30, thereby be convenient for save the design of sealing washer, avoid appearing the problem that the sealing washer was neglected to adorn, do benefit to and simplify the installation, and improve the installation effectiveness, and then improve the assembly qualification rate of (mixing) shaft 100, guarantee the quality uniformity of (mixing) shaft 100 in the assembling process.

In some embodiments, as shown in fig. 3, the sealing protrusion 321 is plural, and the plural sealing protrusions 321 are each in contact with the rotating shaft 20.

Preferably, the sealing protrusions 321 are provided in three, and the three sealing protrusions 321 are all in contact with the rotating shaft 20.

It should be noted that, the sealing washer among the prior art adopts the sealed design of individual layer, leads to its sealing performance relatively poor, and the utility model discloses in, through setting up three sealed protruding 321, and three sealed protruding 321 all with axis of rotation 20 sealing contact to form the three-layer seal, and then can strengthen the leakproofness between axis of rotation 20 and the sealing member 30.

Of course, the number of the sealing protrusions 321 may be other, and is not limited herein.

In some embodiments, as shown in fig. 3, the seal 30 further includes a seal portion 32.

The sealing portion 32 extends in the axial direction of the rotating shaft 20, the inner diameter of the sealing portion 32 is smaller than the inner diameter of the mounting portion 31, and the sealing protrusion 321 is provided on the inner wall of the sealing portion 32.

It can be understood that, as shown in fig. 3, the sealing portion 32 and the mounting portion 31 are an integral structure, and the sealing portion 32 is located at the lower side of the mounting portion 31, wherein the inner diameter of the sealing portion 32 is smaller than the inner diameter of the mounting portion 31, the three sealing protrusions 321 are all disposed on the inner wall of the sealing portion 32, and the three sealing protrusions 321 are distributed at intervals along the axial direction of the sealing portion 32, so as to shorten the distance between the inner wall of the sealing portion 32 and the outer wall of the rotating shaft 20, and further facilitate the three sealing protrusions 321 to better abut against the outer wall of the rotating shaft 20.

It should be noted that, among the prior art, sealing washer and plastic cover are for setting up alone, the sealing washer needs to be fixed in the plastic cover alone promptly, wherein, sealing washer among the prior art is used for sealing between plastic cover and puddler, the plastic cover is used for satisfying the assembly between bearing and the puddler, need just can realize foretell sealed function and assembly through sealing washer and plastic cover promptly, and when actual assembly, the puddler need with the bearing, the sealing washer, the plastic cover is assembled in proper order, the problem of sealing washer neglected loading easily appears.

And the utility model discloses in, sealing portion 32 and installation department 31 structure as an organic whole, and set up sealed arch 321 on sealing portion 32's inner wall, thereby can be when realizing the sealed complex between sealing member 30 and the axis of rotation 20 through sealing portion 32, satisfy the axis of rotation 20 through installation department 31, the assembly requirement between bearing piece 40 and the sealing member 30, in other words, the utility model discloses, only through sealing member 30 alright realize the function of foretell sealed and assembly, thereby be convenient for save the design of sealing washer, avoid appearing the problem that the sealing washer neglected loading, do benefit to and simplify the installation, improve the installation effectiveness, and then improve the assembly qualification rate of (mixing) shaft 100, guarantee the quality uniformity of (mixing) shaft 100 in the assembling process.

Further, as shown in fig. 3, a gap is provided between an end of the sealing portion 32 facing the mounting space 311 and a bottom wall of the mounting space 311 facing the sealing portion 32.

It is understood that the bearing member 40 is installed in the installation space 311, and a gap is provided between an end portion (e.g., an upper end in fig. 3) of the sealing portion 32 facing the installation space 311 and a bottom wall of the installation space 311 facing the sealing portion 32, so that the end portion of the sealing portion 32 facing the installation space 311 can be prevented from interfering with the bearing member 40, thereby facilitating the protection of the sealing portion 32.

As shown in fig. 3, the seal 30 includes a body portion 33.

The body portion 33 is connected to the mounting portion 31, the body portion 33 is connected to the sealing portion 32 through the connecting portion 34, and the axial length of the connecting portion 34 is smaller than the axial length of the body portion 33 and the axial length of the sealing portion 32 in the axial direction of the seal 30, respectively.

Preferably, the sealing element 30 is an integral structure, that is, the main body portion 33, the mounting portion 31, the connecting portion 34 and the sealing portion 32 are an integral structure, the sealing portion 32 is located at the radial inner side of the main body portion, the connecting portion 34 is located between the sealing portion 32 and the main body portion, and in the axial direction of the sealing element 30, the axial length of the connecting portion 34 is smaller than the axial length of the main body portion 33 and the axial length of the sealing portion 32, respectively, which is beneficial to saving the material of the connecting portion 34, further reducing the cost, and facilitating the connecting portion 34 to have better elastic force.

Further, the seal 32 is disposed adjacent to the output end of the rotating shaft 20. Thereby, the seal portion 32 can be sealingly connected to the rotary shaft 20 at a position close to the output end of the rotary shaft 20.

In some embodiments, as shown in fig. 3, the outer peripheral wall of the sealing member 30 is provided with a stop protrusion 301, and the stop protrusion 301 stops against the inner wall of the rod body 10.

It should be noted that, in the prior art, the puddler and the host computer assembly back, the plastic cover that the puddler was located to the cover is spaced apart from the inner wall of the body of rod 10, however the puddler easily produces great vibration at the operation in-process, leads to the puddler can produce great vibration at the operation in-process, and the puddler after the assembly is not at same water flat line with the cooperation of host computer to user's use experience has been reduced.

And the utility model discloses in, set up through the periphery wall at sealing member 30 and end arch 301, and end arch 301 and end the inner wall in the body of rod 10 to through ending arch 301 in the course of the work of axis of rotation 20, strengthen axis of rotation 20's rotational stability, thereby reduce the vibration that (mixing) shaft 100 produced at the operation in-process, and make axis of rotation 20 and power element's cooperation can be at same water flat line, and then improve user's use and experience.

Meanwhile, the stop protrusion 301 is arranged on the outer peripheral wall of the sealing element 30, so that the contact area between the sealing element 30 and the rod body 10 can be reduced, the abrasion of the sealing element 30 is reduced, and the service life of the sealing element 30 is prolonged.

Further, as shown in fig. 4 and 5, the abutment projection 301 is formed in a ring-like structure.

From this, be convenient for make to end protruding 301 can offset with the inner wall of the body of rod 10 simultaneously in the radial outside of sealing member 30 to play fixed effect to sealing member 30 in the radial outside of sealing member 30, and then strengthen the rotational stability of axis of rotation 20 through sealing member 30, thereby reduce the vibration that (mixing) shaft 100 produced at the operation in-process, and then improved user's use and experienced.

Preferably, the abutment projection 301 is plural and provided at intervals in the axial direction of the seal 30.

For example, as shown in fig. 4 and 5, the number of the abutment protrusions 301 is two, and the two abutment protrusions 301 are spaced apart from each other in the axial direction of the seal 30. From this, through setting up two and ending protruding 301, can further strengthen sealing member 30's stability through two and ending protruding 301, and do benefit to and scatter the vibration energy that (mixing) shaft 100 produced in the operation through two and end protruding 301, further reduce the vibration that reduces (mixing) shaft 100 and produce in the operation.

Of course, the number of the stop protrusions 301 may be other, and is not limited herein.

In some embodiments, the sealing element 30 is an integrally formed part, or either the mounting portion 31 or the sealing portion 32 of the sealing element 30 may be connected to the other by welding or the like, that is, during use, the sealing element 30 can be integrally assembled and disassembled, so as to reduce the difficulty in assembling the stirring shaft 100.

Sealing member 30 is made by food level silica gel material to be convenient for guarantee that sealing member 30 has good elastic deformation ability, thereby be convenient for sealing member 30 can be when axis of rotation 20 transmission power, absorb axis of rotation 20's vibration energy, thereby reduce the vibration of axis of rotation 20 in the course of the work, and then do benefit to the use that promotes the user and experience.

In some embodiments, as shown in fig. 1 and 2, the mixer shaft 100 further comprises: a holder 50 and a housing 60.

The fixing base 50 and the cover 60 are respectively fixed to both ends of the rod body 10, an input end (e.g., an upper end in fig. 2) of the rotating shaft 20 extends into the fixing base 50 and is adapted to be electrically connected to a power element, and an output end (e.g., a lower end in fig. 2) of the rotating shaft 20 extends into the cover 60.

From this, be convenient for carry out location fit through fixing base 50 and dustcoat 60 to axis of rotation 20, and do benefit to input and the output of axis of rotation 20 and can extend respectively and link to each other with power component and output element in fixing base 50 and the dustcoat 60.

The utility model also provides a mixer.

According to the utility model discloses mixer, include: the stirring shaft 100, the stirring shaft 100 is the stirring shaft 100 of any one of the above embodiments; a blade 70, the blade 70 being fixed to the output end.

For example, the blender may be a hand blender, with an input end (e.g., upper end in FIG. 1) of the blender shaft 100 connected to the power element and an output end (e.g., lower end in FIG. 1) of the blender shaft 100 connected to the blade 70, wherein, as shown in FIG. 4, the blade 70 has a mounting hole 71 and the output end of the blender shaft 100 is adapted to extend into the mounting hole 71.

During actual assembly, the output end of the stirring shaft 100 extends out of the rod body 10 and extends out of the outer cover 60 to be inserted into the mounting hole 71 of the blade 70, so that the positioning assembly of the stirring shaft 100 and the blade 70 is realized, the stirring shaft 100 can drive the blade 70 to rotate by taking the stirring shaft 100 as a rotation center, and the stirring of the blade 70 to be stirred is further completed.

The assembly process of the stirring shaft 100 of the present invention is described below with reference to fig. 4:

the bearing member 40 is installed on the sealing member 30, the rotating shaft 20 is installed on the bearing member 40 through the gasket 81, and then is installed on the sealing member 30, the first E-shaped medium 91 and the second E-shaped medium 92 are both installed at the installation groove of the rotating shaft 20 to form a component, and the component is assembled in the rod body 10, wherein the buckle 80 is also assembled in the rod body 10, then the blade 70 is connected with the output end of the rotating shaft 20, then the fixing seat 50 is connected with the upper end of the rod body 10, at this time, the assembly is completed, and then the power element can control the blade 70 through the rotating shaft 20 to realize transmission so as to stir food.

According to the utility model discloses the mixer, its (mixing) shaft 100's sealing member 30 is equipped with annular sealed protruding 321, and sealed protruding 321 and the contact of axis of rotation 20, thereby can realize the sealed between axis of rotation 20 and the sealing member 30, and sealing member 30 includes installation department 31, make bearing part 40 can overcoat to (mixing) shaft 100 on and be located the installation space 311 between installation department 31 and the axis of rotation 20, can realize the sealed while between axis of rotation 20 and the sealing member 30 promptly through sealing member 30, can also satisfy axis of rotation 20, the assembly requirement between bearing part 40 and the sealing member 30, thereby be convenient for save the design of sealing washer, avoid appearing the problem that the sealing washer neglected to adorn, do benefit to and simplify the installation, and improve the installation effectiveness, and then improve the assembly qualification rate of (mixing) shaft 100, guarantee the quality uniformity of (mixing) shaft 100 in the equipment process.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. A mixing shaft, comprising:

the device comprises a hollow rod body, wherein two ends of the rod body are open;

the rotating shaft is arranged in the rod body, and the output end of the rotating shaft extends out of the rod body;

the sealing element is sleeved outside the rotating shaft and positioned in the rod body, the sealing element comprises an installation part, an installation space is defined between the installation part and the inner peripheral wall of the rotating shaft, the sealing element is provided with an annular sealing bulge, and the sealing bulge is in contact with the rotating shaft;

and the bearing piece is sleeved outside the rotating shaft and is positioned in the installation space.

2. The mixing shaft as in claim 1, wherein said sealing protrusion is in plurality, said plurality of sealing protrusions each being in contact with said rotating shaft.

3. The mixing shaft according to claim 1, wherein said sealing member further comprises a sealing portion extending in the axial direction of said rotating shaft, said sealing portion having an inner diameter smaller than that of said mounting portion, said sealing projection being provided on an inner wall of said sealing portion.

4. A mixer shaft as claimed in claim 3, in which a gap is provided between the end of the sealing portion facing the mounting space and the bottom wall of the mounting space facing the sealing portion.

5. A mixer shaft as claimed in claim 3, in which the seal includes a body portion connected to the mounting portion and to the sealing portion by a connecting portion, the axial length of the connecting portion in the axial direction of the seal being less than the axial length of the body portion and the axial length of the sealing portion respectively.

6. A mixer shaft as claimed in claim 3, in which the seal is located adjacent the output end of the shaft.

7. Stirring shaft according to claim 1, characterised in that the peripheral wall of said sealing element is provided with an abutment protuberance, said abutment protuberance being adapted to abut against the inner wall of said rod body.

8. The mixing shaft as recited in claim 7, in which said stop projection is formed as an annular structure; the stop bulges are multiple and are arranged at intervals along the axial direction of the sealing element.

9. A mixer shaft as claimed in claim 1, in which the seal is an integrally formed part.

10. The mixing shaft as recited in claim 1, further comprising: fixing base and dustcoat, the fixing base with the dustcoat is fixed respectively extremely the both ends of the body of rod, the input of axis of rotation stretches into in the fixing base and be suitable for and be connected with the power component electricity, the output of axis of rotation stretches into in the dustcoat.

11. A blender, comprising:

a stirring shaft according to any one of claims 1-10;

a blade secured to the output end.

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