Stirring device with adjustable blade angle

Abstract

The utility model provides a stirring device with an adjustable blade angle, which relates to the field of stirrers and comprises a stirring shaft and a plurality of stirring components, a plurality of rotating shaft holes are formed in the side wall of the stirring shaft; one stirring assembly is mounted in one rotating shaft hole; the stirring assembly comprises stirring blades and an expansion sleeve; the stirring blade comprises a stirring blade body and a rotating shaft; the rotating shaft is fixed with the stirring blade body; the cross section of the expansion sleeve is annular, and an opening which is cut off from the top to the bottom is formed in the side wall. The expansion sleeve is arranged in the rotating shaft hole; when the rotating shaft is sleeved with the expansion sleeve, the expansion sleeve is in interference fit with the rotating shaft hole, and the rotating shaft is in interference fit with the expansion sleeve. According to the utility model, the problem that the angle adjustment amplitude of the stirring blade is limited because the angle of the stirring blade is adjusted by arranging a plurality of open holes through which a screw rod passes and the angle of the stirring blade cannot be accurately adjusted by a fixed open hole in the prior art can be solved; the angle of the stirring blades can be accurately adjusted, and the flour stirring uniformity can be accurately adjusted.

Description

Technical Field

[0001] The utility model relates to the field of mixers, in particular to a mixing device with adjustable blade angles. Background Technique

[0002] Mixers are commonly used to mix raw materials. In the food production field, mixers can mix food raw materials such as flour. When the mixing blades of a mixer mix flour, the mixing blades at different angles will affect the uniformity of flour mixing, thereby affecting the quality of the subsequent flour processed into food.

[0003] The patent with the Chinese patent application number 202021721536.X discloses a mixing device with adjustable mixer blade angles, which includes a vertically placed mixing shaft. A plurality of horizontally placed sleeves are arranged on the outer wall of the mixing shaft. All the sleeves are evenly distributed along the axial direction of the mixing shaft. The central axis of the sleeve is perpendicular to the central axis of the mixing shaft. The sleeve is connected with a mixing blade through a rotating shaft. The rotating shaft is rotatably connected with the sleeve. The mixing blade is a rectangular thin sheet. The central axis of the rotating shaft is parallel to the long side of the mixing blade. One end of the rotating shaft is fixedly connected to the side wall of the mixing blade close to the sleeve. The other end of the rotating shaft is inserted into the sleeve. The sleeve and the rotating shaft are detachably connected. The mixing device provided by the above patent changes the installation structure of the rectangular mixing blade and the mixing shaft. By rotating the rotating shaft, the angle of the mixing blade can be changed, so that the uniformity of flour mixing can be controlled by adjusting the angle of the mixing blade.

[0004] When using the mixing device provided by the above patent, the mixing blade of the mixing device is fixed to the rotating shaft, and the rotating shaft is sleeved in the sleeve. It is necessary to pass a vertically placed screw through the rotating shaft and the sleeve to fix the rotating shaft and the sleeve together. That is, in order to adjust the angle of the mixing blade, a plurality of openings for the screw to pass through need to be opened on the rotating shaft. However, the fixed openings cannot accurately adjust the angle of the mixing blade, which limits the adjustment range of the mixing blade angle, and thus cannot accurately adjust the uniformity of flour mixing. Summary of the Utility Model

[0005] In view of the above problems, a mixing device with adjustable blade angles provided by the utility model can solve the problem that the prior art needs to open a plurality of openings for the screw to pass through to adjust the angle of the mixing blade, but the fixed openings cannot accurately adjust the angle of the mixing blade, thereby limiting the adjustment range of the mixing blade angle; and can achieve precise adjustment of the angle of the mixing blade, so as to accurately adjust the uniformity of flour mixing.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A stirring device with adjustable blade angles provided by the present utility model includes a stirring shaft and a number of stirring components; a number of rotating shaft holes are provided on the arc-shaped side wall of the stirring shaft; one of the stirring components is fixedly installed in one of the rotating shaft holes;

[0008] The stirring component includes a stirring blade and an expansion sleeve; the stirring blade includes a stirring blade body and a rotating shaft; the rotating shaft is fixed to the stirring blade body; the outer diameter of the rotating shaft is smaller than the inner diameter of the rotating shaft hole;

[0009] The cross-section of the expansion sleeve is annular; an opening truncated from the top to the bottom is provided on the side wall of the expansion sleeve;

[0010] The expansion sleeve is arranged in the rotating shaft hole; the axis of the expansion sleeve coincides with the axis of the rotating shaft hole; when the rotating shaft is sleeved in the expansion sleeve, an interference fit is formed between the outer side wall of the expansion sleeve and the inner side wall of the rotating shaft hole, and an interference fit is formed between the rotating shaft and the inner side wall of the expansion sleeve.

[0011] For the stirring device with adjustable blade angles provided by the present utility model, preferably, the axis of the rotating shaft hole is perpendicular to the axis of the stirring shaft.

[0012] For the stirring device with adjustable blade angles provided by the present utility model, preferably, if the stirring shaft is horizontally arranged and the rotating shaft hole is vertically opened on the stirring shaft;

[0013] The rotating shaft includes a cylindrical fixing part and a frustum-shaped assembling part; the top of the fixing part is fixed to the stirring blade body; the bottom of the fixing part is fixed to the top of the assembling part; the bottom surface of the fixing part coincides with the top surface of the assembling part; the top surface area of the assembling part is larger than the bottom surface area of the assembling part; the inner diameter of the rotating shaft hole is larger than the outer diameter of the fixing part; both the assembling part and the fixing part are located in the rotating shaft hole;

[0014] The outer circumferences of any two cross-sections of the expansion sleeve are of equal size; the inner side wall of the expansion sleeve gradually contracts from the top to the bottom; the diagonal line of the left side wall in the vertical section passing through the axis of the expansion sleeve is taken as the first diagonal line; the diagonal line of the left side wall in the vertical section passing through the axis of the assembling part is taken as the second diagonal line; the first diagonal line is parallel to the second diagonal line.

[0015] For the stirring device with adjustable blade angles provided by the present utility model, preferably, the rotating shaft hole penetrates through the stirring shaft; the rotating shaft hole includes a first opening and a second opening; the bottom cross-section of the first opening coincides with the top cross-section of the second opening; the cross-section of the first opening is larger than the cross-section of the second opening; the centers of the first opening and the second opening coincide; a step is formed between the bottom surface of the first opening and the side wall of the second opening;

[0016] The cross-section of the first opening is larger than that of the fixing part; both the assembling part and the fixing part are located within the first opening;

[0017] The stirring assembly further includes a gasket and a bolt;

[0018] The cross-section of the gasket is smaller than that of the first opening; the cross-section of the gasket is larger than that of the second opening; a third opening is provided at the center of the gasket; the center of the third opening coincides with the center of the second opening; the cross-section of the third opening is smaller than that of the second opening; the gasket is placed within the first opening and above the step;

[0019] The expansion sleeve is placed above the gasket;

[0020] The assembling part is sleeved within the expansion sleeve;

[0021] A screw hole is provided at the center of the bottom of the assembling part; the bolt is located within the second opening; the screw rod of the bolt passes through the third opening; the screw rod of the bolt rotates and extends into the screw hole to form a threaded fit with the screw hole.

[0022] In the stirring device with adjustable blade angle provided by the present utility model, preferably, the stirring assembly further includes a screw hole plug; the screw hole plug is arranged within the second opening; the screw hole plug is located below the head of the bolt; the screw hole plug forms a tight fit with the second opening;

[0023] When an interference fit is formed between the outer sidewall of the expansion sleeve and the inner sidewall of the rotating shaft hole, and an interference fit is formed between the rotating shaft and the inner sidewall of the expansion sleeve, a tight fit is formed between the fixing part and the first opening.

[0024] The above technical solution has the following advantages or beneficial effects:

[0025] In the stirring device with adjustable blade angle provided by the present utility model, the rotating shaft is fixed to the stirring blade body, so that the stirring blade body can be driven to rotate when the rotating shaft rotates; the outer diameter of the rotating shaft is smaller than the inner diameter of the rotating shaft hole, so that the bottom of the rotating shaft can extend into the rotating shaft hole, and the bottom of the rotating shaft is fixed to the rotating shaft hole, so that when the stirring shaft rotates, the flour in the stirring cylinder can be stirred by the stirring blade body fixed on the rotating shaft;

[0026] Further, the expansion sleeve is arranged within the rotating shaft hole. Since the cross-section of the expansion sleeve is annular, the bottom of the rotating shaft can extend in from the annular opening of the expansion sleeve, so that the rotating shaft is sleeved within the expansion sleeve;

[0027] Further, the expansion sleeve is elastic, and an opening truncated from top to bottom is provided on the side wall of the expansion sleeve. When the rotating shaft is sleeved in the expansion sleeve, the side wall of the expansion sleeve is squeezed by the rotating shaft, and an interference fit can be formed between the rotating shaft and the inner side wall of the expansion sleeve. The opening will expand, causing the expansion sleeve to undergo elastic deformation, and the expansion sleeve expands outward. The outer wall of the expansion sleeve contacts the inner side wall of the rotating shaft hole, and an interference fit can be formed between the outer side wall of the expansion sleeve and the inner side wall of the rotating shaft hole; an interference fit is formed between the rotating shaft and the inner side wall of the expansion sleeve, so that the rotating shaft cannot rotate or displace relative to the expansion sleeve. An interference fit is formed between the outer side wall of the expansion sleeve and the inner side wall of the rotating shaft hole, so that the expansion sleeve cannot rotate or displace relative to the rotating shaft hole, thereby preventing the rotating shaft from rotating or displacing relative to the rotating shaft hole. At this time, the rotating shaft is fixed in the rotating shaft hole;

[0028] When the angle of the stirring blade needs to be adjusted, only the rotating shaft needs to be taken out of the expansion sleeve and rotated by an appropriate angle, so as to adjust the angle of the stirring blade body, and further change the uniformity of flour stirring; compared with the prior art of opening multiple holes for the screw to pass through to adjust the angle of the stirring blade, the angle of the stirring blade can be freely adjusted in the above manner without being affected by the position of the fixing holes, so as to accurately adjust the uniformity of flour stirring. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, the present invention, its features, shape and advantages will become more obvious. The same reference numerals indicate the same parts in all the drawings. The drawings are not deliberately drawn to scale, and the emphasis is on showing the gist of the present invention.

[0030] Figure 1 is a three-dimensional structural schematic diagram of a stirring device with adjustable blade angle provided by Embodiment 1 of the present invention.

[0031] Figure 2 is a cross-sectional structural schematic diagram of a stirring device with adjustable blade angle provided by Embodiment 1 of the present invention.

[0032] Figure 3 is a three-dimensional structural schematic diagram of the expansion sleeve in a stirring device with adjustable blade angle provided by Embodiment 1 of the present invention.

[0033] Figure 4 is Figure 2 an enlarged view of the circled part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The present invention will be further described below with reference to the drawings and specific embodiments, but it is not limited to the present invention.

[0035] Embodiment 1:

[0036] AsFigures 1 - 2 As shown in Figures 1 - 2 , a stirring device with adjustable blade angles provided in Embodiment 1 of the present utility model includes a stirring shaft 0 and a number of stirring components 10; a number of rotating shaft holes 01 are provided on the arc-shaped side wall of the stirring shaft 0; one stirring component 10 is fixedly installed in one rotating shaft hole 01;

[0037] The stirring component 10 includes a stirring blade 1 and an expansion sleeve 2; the stirring blade 1 includes a stirring blade body 11 and a rotating shaft 12; the rotating shaft 12 is fixed to the stirring blade body 11; the outer diameter of the rotating shaft 12 is smaller than the inner diameter of the rotating shaft hole 01;

[0038] The cross-section of the expansion sleeve 2 is annular; an opening 21 that is truncated from the top to the bottom is provided on the side wall of the expansion sleeve 2;

[0039] The expansion sleeve 2 is arranged in the rotating shaft hole 01; the axis of the expansion sleeve 2 coincides with the axis of the rotating shaft hole 01; when the rotating shaft 12 is sleeved in the expansion sleeve 2, an interference fit is formed between the outer side wall of the expansion sleeve 2 and the inner side wall of the rotating shaft hole 01, and an interference fit is formed between the rotating shaft 12 and the inner side wall of the expansion sleeve 2.

[0040] When using the stirring device with adjustable blade angles provided in Embodiment 1 of the present utility model, the stirring shaft 0 is installed into the stirring cylinder of the mixer, and the stirring shaft 0 is fixed to the motor output shaft of the mixer so that the axis of the stirring shaft 0 coincides with the axis of the motor output shaft; before starting the mixer, if it is necessary to adjust the angle of the stirring blade body 11, the stirring component 10 needs to be removed from the rotating shaft hole 01 so that the stirring blade 1 can move relative to the stirring shaft 0; the rotating shaft 12 is taken out of the expansion sleeve 2 so that the rotating shaft 12 can rotate in the rotating shaft hole 01, and the rotating shaft 12 is rotated to make the stirring blade body 11 fixed to the rotating shaft 12 rotate. At this time, the angle of the stirring blade body 11 changes. When the stirring blade body 11 is at a suitable angle, the rotating shaft 12 is installed back into the expansion sleeve 2 so that the rotating shaft 12 is fixed relative to the rotating shaft hole 01, so that the rotating shaft 12 cannot leave the rotating shaft hole 01 or cannot rotate relative to the rotating shaft hole 01; flour is added to the stirring cylinder of the mixer, the motor is started, the output shaft of the motor rotates, and the rotation of the output shaft of the motor drives the stirring shaft 0 to rotate, so that the stirring blade 1 fixed to the stirring shaft 0 stirs the flour.

[0041] For the stirring device with adjustable blade angles provided in Embodiment 1 of the present utility model, the rotating shaft 12 is fixed to the stirring blade body 11 so that the stirring blade body 11 can be driven to rotate when the rotating shaft 12 rotates; the outer diameter of the rotating shaft 12 is smaller than the inner diameter of the rotating shaft hole 01, so that the bottom of the rotating shaft 12 can extend into the rotating shaft hole 01 and the bottom of the rotating shaft 12 is fixed to the rotating shaft hole 01. Thus, when the stirring shaft 0 rotates, the stirring blade body 11 fixed on the rotating shaft 12 can stir the flour in the stirring cylinder.

[0042] Furthermore, the expansion sleeve 2 is disposed within the rotating shaft hole 01. Since the cross-section of the expansion sleeve 2 is annular, the bottom of the rotating shaft 12 can extend into the annular opening of the expansion sleeve 2, such that the rotating shaft 12 is sleeved within the expansion sleeve 2.

[0043] Furthermore, the expansion sleeve 2 is elastic, and an opening 21 that is truncated from the top to the bottom is formed on the side wall of the expansion sleeve 2. When the rotating shaft 12 is sleeved within the expansion sleeve 2, the side wall of the expansion sleeve 2 is squeezed by the rotating shaft 12, and an interference fit can be formed between the rotating shaft 12 and the inner side wall of the expansion sleeve 2. The opening 21 will expand, causing the expansion sleeve 2 to undergo elastic deformation, and the expansion sleeve 2 expands outwardly. The outer wall of the expansion sleeve 2 comes into contact with the inner side wall of the rotating shaft hole 01, and an interference fit can be formed between the outer side wall of the expansion sleeve 2 and the inner side wall of the rotating shaft hole 01; an interference fit is formed between the rotating shaft 12 and the inner side wall of the expansion sleeve 2, such that the rotating shaft 12 cannot rotate or displace relative to the expansion sleeve 2, and an interference fit is formed between the outer side wall of the expansion sleeve 2 and the inner side wall of the rotating shaft hole 01, such that the expansion sleeve 2 cannot rotate or displace relative to the rotating shaft hole 01, thereby causing the rotating shaft 12 to be unable to rotate or displace relative to the rotating shaft hole 01. At this time, the rotating shaft 12 is fixed within the rotating shaft hole 01.

[0044] When it is necessary to adjust the angle of the stirring blade 1, it is only necessary to remove the rotating shaft 12 from the expansion sleeve 2 and rotate it by an appropriate angle, thereby adjusting the angle of the stirring blade body 11, and further changing the uniformity of the flour stirring; compared with the prior art of opening a plurality of openings for the screw to pass through to adjust the angle of the stirring blade, the angle of the stirring blade 1 can be freely adjusted in the above manner without being affected by the position of the fixing holes, thereby accurately adjusting the uniformity of the flour stirring.

[0045] As Figures 1 - 2 shown, for the stirring device with adjustable blade angle provided in Embodiment 1 of the present utility model, preferably, the axis of the rotating shaft hole 01 is perpendicular to the axis of the stirring shaft 0. When the rotating shaft 12 is fixed within the rotating shaft hole 01 and a plurality of rotating shaft holes 01 are uniformly arranged around the axis of the stirring shaft 0, the rotation speed of the stirring blade body 11 centered on the axis of the stirring shaft 0 is the same as the rotation speed of the stirring shaft 0. Thus, the stirring blade body 11 can be controlled by the stirring shaft 0, and further, the flour can be stirred uniformly.

[0046] As Figures 2 - 4As shown, the stirring device with adjustable blade angle provided in Embodiment 1 of the present utility model. Preferably, for the convenience of explaining the fixing relationship between the stirring shaft 0 and the stirring blade 1, the specific description is carried out under the condition that the stirring shaft 0 is horizontally arranged and a rotating shaft hole 01 is vertically opened on the stirring shaft 0; in order to make the rotating shaft 12 more easily extend into the expansion sleeve 2, the rotating shaft 12 includes a cylindrical fixing part 121 and a frustum-shaped assembling part 122. Let the fixing part 121 and the assembling part 122 be vertically arranged, and the bottom of the fixing part 121 is fixed to the top of the assembling part 122. At this time, the bottom surface of the fixing part 121 coincides with the top surface of the assembling part 122; let the top surface area of the assembling part 122 be larger than the bottom surface area of the assembling part 122, and further determine the orientation directions of the two frustum bottom surfaces of the assembling part 122; fix the top of the fixing part 121 to the stirring blade body 11, and make the cross-section of the rotating shaft hole 01 larger than the cross-section of the fixing part 121, so that both the fixing part 121 and the assembling part 122 can extend into the rotating shaft hole 01;

[0047] Furthermore, in order to match the shape of the assembling part 122 and facilitate the introduction of the assembling part 122, let the inner side wall of the expansion sleeve 2 gradually contract from top to bottom. Further, take the oblique line of the left side wall in the vertical section passing through the axis of the expansion sleeve 2 as the first oblique line 22, and take the oblique line of the left side wall in the vertical section passing through the axis of the assembling part 122 as the second oblique line 1221. The first oblique line 22 is parallel to the second oblique line 1221. When the assembling part 122 extends into the top annular opening of the expansion sleeve 2, the side wall of the assembling part 122 can closely adhere to the expansion sleeve 2. As the assembling part 122 moves downward, the expansion sleeve 2 is extruded by the rotating shaft 12, and an interference fit is formed between the rotating shaft 12 and the inner side wall of the expansion sleeve 2. If the assembling part 122 continues to move downward at this time, the opening 21 will expand, causing the expansion sleeve 2 to produce elastic deformation, and the expansion sleeve 2 expands outward until the outer wall of the expansion sleeve 2 contacts the inner side wall of the rotating shaft hole 01, and an interference fit is formed between the outer side wall of the expansion sleeve 2 and the inner side wall of the rotating shaft hole 01; at the same time, make the outer circumferences of any two cross-sections of the expansion sleeve 2 equal. When the expansion sleeve 2 expands outward, the outer side wall of the expansion sleeve 2 maintains a flat circular arc shape and can form an interference fit with the rotating shaft hole 01 everywhere, so that the force between the expansion sleeve 2 and the rotating shaft hole 01 is uniform, and the stability of the fixation between the expansion sleeve 2 and the rotating shaft hole 01 is improved.

[0048] As Figure 2 and Figure 4As shown in the figure, the stirring device with adjustable blade angle provided in Embodiment 1 of the present utility model. Preferably, when the rotating shaft 12 can no longer provide downward pressure, due to the elastic deformation of the expansion sleeve 2, the expansion sleeve 2 will contract inward. At this time, the assembly part 122 inside the expansion sleeve 2 is affected by the elastic force of the expansion sleeve 2 and will be partially discharged out of the expansion sleeve 2 by the expansion sleeve 2, resulting in that the assembly part 122 cannot form an interference fit with the inner side wall of the expansion sleeve 2, and the outer side wall of the expansion sleeve 2 cannot maintain an interference fit relationship with the inner side wall of the rotating shaft hole 01, so that the rotating shaft 12 cannot be fixed inside the rotating shaft hole 01;

[0049] Therefore, the rotating shaft hole 01 penetrates through the stirring shaft 0. The rotating shaft hole 01 includes a first opening 011 and a second opening 012. The bottom cross-section of the first opening 011 coincides with the top cross-section of the second opening 012, so that the first opening 011 and the second opening 012 are communicated; and the cross-section of the first opening 011 is larger than the cross-section of the second opening 012, and the center of the first opening 011 coincides with the center of the second opening 012, so that the bottom surface of the first opening 011 and the side wall of the second opening 012 form a step 02, and the step 02 is circular;

[0050] The cross-section of the first opening 011 is made larger than the cross-section of the fixing part 121, so that both the assembly part 122 and the fixing part 121 can extend into the first opening 011;

[0051] The stirring assembly 10 further includes a gasket 3 and a bolt 4;

[0052] The cross-section of the gasket 3 is smaller than the cross-section of the first opening 011 and larger than the cross-section of the second opening 012, so that the gasket 3 can be placed in the first opening 011 and stably placed on the step 02;

[0053] The expansion sleeve 2 is placed above the gasket 3, and the assembly part 122 is sleeved inside the expansion sleeve 2, so that the assembly part 122 forms an interference fit with the inner side wall of the expansion sleeve 2, and the outer side wall of the expansion sleeve 2 forms an interference fit with the inner side wall of the first opening 011;

[0054] Furthermore, in order to maintain the state of the expansion sleeve 2 expanding outward, a third opening 31 is opened in the center of the gasket 3 for inserting the bolt 4 upward from the second opening 012;

[0055] A screw hole 1222 is provided at the bottom center of the assembly part 122; the bolt 4 is located within the second opening 012; the screw rod of the bolt 4 passes through the third opening 31; the screw rod of the bolt 4 rotates and extends into the screw hole 1222, forming a threaded fit with the screw hole 1222; further, the center of the third opening 31 coincides with the center of the second opening 012, and the cross-sectional area of the third opening 31 is smaller than that of the second opening 012. When the screw rod of the bolt 4 extends deep into the screw hole 1222, the head of the bolt 4 within the second opening 012 can contact the bottom of the gasket 3, restricting the sliding of the gasket 3 due to the elastic force of the expansion sleeve 2. At this time, since the bolt 4 and the assembly part 122 are fixed through a threaded fit, the upward supporting force of the gasket 3 on the expansion sleeve 2 and the downward pressure of the assembly part 122 on the expansion sleeve 2 are balanced, enabling the expansion sleeve 2 to stably maintain the state of expanding outward, and further enabling the assembly part 122 to be stably fixed within the first opening 011.

[0056] As Figure 2 and Figure 4 shown, for the stirring device with adjustable blade angle provided in Embodiment 1 of the present utility model, preferably, during the process of stirring flour, in order to prevent flour from entering the second opening 012 and affecting the fixing firmness of the bolt 4, the stirring assembly 10 further includes a screw hole plug 5; the screw hole plug 5 is arranged within the second opening 012, the screw hole plug 5 is located below the head of the bolt 4, and the screw hole plug 5 forms a tight fit with the second opening 012, thereby preventing flour from interfering with the bolt 4; when the assembly part 122 forms an interference fit with the inner side wall of the expansion sleeve 2, and the outer side wall of the expansion sleeve 2 forms an interference fit with the inner side wall of the first opening 011, the fixing part 121 forms a tight fit with the first opening 01, preventing flour from entering the first opening 011 and avoiding affecting the fixing firmness between the expansion sleeve 2 and the assembly part 122 or between the expansion sleeve 2 and the first opening 011.

[0057] In summary, the stirring device with adjustable blade angle provided by the present utility model can solve the problem that the prior art needs to open multiple openings for the screw rod to pass through to adjust the angle of the stirring blade, but the fixed openings cannot accurately adjust the angle of the stirring blade, thereby restricting the adjustment range of the stirring blade angle; it realizes precise adjustment of the angle of the stirring blade, thereby accurately adjusting the uniformity of flour stirring.

[0058] Those skilled in the art should understand that those skilled in the art can implement the above variation examples in combination with the prior art and the above embodiments, which will not be elaborated herein. Such variation examples do not affect the essence of the present utility model and will not be elaborated herein.

[0059] The preferred embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above specific embodiments, and the devices and structures not described in detail therein should be understood to be implemented in a common manner in the art; any person skilled in the art can make many possible changes and modifications without departing from the technical solution of the present utility model, or modify it into an equivalent embodiment with equivalent changes, which does not affect the substantial content of the present utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model still fall within the scope of protection of the technical solution of the present utility model.

Claims

1. A stirring device with adjustable blade angles, characterized in that, It includes a stirring shaft and a number of stirring components; a number of rotating shaft holes are provided on the arc-shaped side wall of the stirring shaft; one of the stirring components is fixedly installed in one of the rotating shaft holes; The stirring component includes a stirring blade and an expansion sleeve; the stirring blade includes a stirring blade body and a rotating shaft; the rotating shaft is fixed to the stirring blade body; the outer diameter of the rotating shaft is smaller than the inner diameter of the rotating shaft hole; The cross-section of the expansion sleeve is annular; an opening truncated from top to bottom is provided on the side wall of the expansion sleeve; The expansion sleeve is arranged in the rotating shaft hole; the axis of the expansion sleeve coincides with the axis of the rotating shaft hole; when the rotating shaft is sleeved in the expansion sleeve, an interference fit is formed between the outer side wall of the expansion sleeve and the inner side wall of the rotating shaft hole, and an interference fit is formed between the rotating shaft and the inner side wall of the expansion sleeve.

2. The stirring device with adjustable blade angle according to claim 1, characterized in that, The axis of the rotating shaft hole is perpendicular to the axis of the stirring shaft.

3. The stirring device with adjustable blade angles according to claim 2, characterized in that, If the stirring shaft is horizontally arranged, and the rotating shaft hole is vertically opened on the stirring shaft; The rotating shaft includes a cylindrical fixing part and a frustum-shaped assembling part; the top of the fixing part is fixed to the stirring blade body; the bottom of the fixing part is fixed to the top of the assembling part; the bottom surface of the fixing part coincides with the top surface of the assembling part; the top surface area of the assembling part is larger than the bottom surface area of the assembling part; the inner diameter of the rotating shaft hole is larger than the outer diameter of the fixing part; both the assembling part and the fixing part are located in the rotating shaft hole; The outer circumferences of any two cross-sections of the expansion sleeve are of equal size; the inner side wall of the expansion sleeve gradually contracts from top to bottom; the diagonal line of the left side wall in the vertical section passing through the axis of the expansion sleeve is taken as the first diagonal line; the diagonal line of the left side wall in the vertical section passing through the axis of the assembling part is taken as the second diagonal line; the first diagonal line is parallel to the second diagonal line.

4. The stirring device with adjustable blade angle according to claim 3, wherein The rotating shaft hole penetrates through the stirring shaft; the rotating shaft hole includes a first opening and a second opening; the bottom cross-section of the first opening coincides with the top cross-section of the second opening; the cross-section of the first opening is larger than the cross-section of the second opening; the centers of the first opening and the second opening coincide; the bottom surface of the first opening forms a step with the side wall of the second opening; The cross-section of the first opening is larger than the cross-section of the fixing part; both the assembling part and the fixing part are located in the first opening; The stirring component further includes a gasket and a bolt; The cross-section of the gasket is smaller than the cross-section of the first opening; the cross-section of the gasket is larger than the cross-section of the second opening; a third opening is provided at the center of the gasket; the center of the third opening coincides with the center of the second opening; the cross-section of the third opening is smaller than the cross-section of the second opening; the gasket is placed in the first opening, above the step; The expansion sleeve is placed above the gasket; The assembling part is sleeved in the expansion sleeve; A screw hole is provided at the center of the bottom of the assembling part; the bolt is located in the second opening; the screw rod of the bolt passes through the third opening; the screw rod of the bolt rotates and extends into the screw hole, forming a threaded fit with the screw hole.

5. The stirring device with adjustable blade angles according to claim 4, characterized in that, The stirring assembly further includes a screw hole plug; the screw hole plug is arranged in the second opening; the screw hole plug is located below the head of the bolt; the screw hole plug forms a tight fit with the second opening; When an interference fit is formed between the outer side wall of the expansion sleeve and the inner side wall of the rotating shaft hole, and an interference fit is formed between the rotating shaft and the inner side wall of the expansion sleeve, the fixing portion forms a tight fit with the first opening.

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