Stirrer

Abstract

The utility model provides a stirrer and belongs to the technical field of machinery. The stirring blade solves the problem of low stirring efficiency caused by unstable connection of the existing stirring blade. The stirrer comprises a stirring shaft and a connecting sleeve connected to the stirring shaft in a sleeving mode, the connecting sleeve is connected with at least three stirring blades, one end of each stirring blade is a large-diameter end, the other end of each stirring blade is a small-diameter end, the width of the large-diameter end is larger than that of the small-diameter end, the large-diameter end is fixedly connected with the connecting sleeve, and the stirring blades are bent in the width direction of the stirring blades. The side wall of the stirring blade is provided with a flow guide wall which is inclined inwards towards the end part of the small-diameter end, a receding wall which is inclined inwards towards the end part of the large-diameter end and a corner cutting wall which is arranged between the flow guide wall and the receding wall, the flow guide wall and the corner cutting wall are arranged in a relatively inclined manner, and the receding wall and the corner cutting wall are arranged in a relatively inclined manner. The stirring blades of the stirrer are connected stably, and the stirring efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a stirrer. Background Technology

[0002] Propeller agitators have a high rotational speed during mixing, which forces the material to move along the axial direction, allowing the material to circulate and mix fully. Propeller agitators are mostly suitable for mixing liquids with low viscosity, such as suspensions and emulsions, and their drainage capacity is higher than that of traditional propeller agitators.

[0003] For example, Chinese patent application [Authorization Announcement No.: CN215463417U] discloses a mixing blade for a slurry tank mixer, which includes a mixing blade and an output shaft. One end of the mixing blade is fixedly connected to a connecting pipe, and the periphery of the output shaft is fixedly connected to several mounting structures by bolts. The mixing blade and the output shaft are detachably connected through the mounting structures. The mounting structures also include a fixing pipe and a fixing sleeve. The periphery of the output shaft is fixedly connected to several fixing pipes by bolts, and one end of the fixing pipe is rotatably connected to a fixing sleeve through a bearing. The fixing sleeve is threadedly connected to the connecting pipe.

[0004] The above structure connects the stirring blade to the mounting structure via a connecting pipe on the stirring blade, facilitating the maintenance, replacement, and cleaning of the stirring blade. However, during the stirring process, it is necessary to ensure both stirring efficiency and the stability of the connection between the stirring blade and the output shaft. During stirring, the stirring blade is subjected to a large ejection force, so a stable connection between the stirring blade and the mounting structure is required. The above structure connects the small-diameter end of the stirring blade to the mounting structure, but the structural strength of the small-diameter end of the stirring blade is relatively low, making it prone to damage during stirring, thus affecting stirring efficiency and quality. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a stirrer. The technical problem this invention aims to solve is: how to resolve the issue of low stirring efficiency caused by unstable connection of existing stirring blades.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A stirrer includes a stirring shaft and a connecting sleeve fitted onto the stirring shaft. At least three stirring blades are connected to the connecting sleeve. The stirring blades are characterized in that one end is a large-diameter end and the other end is a small-diameter end, the width of the large-diameter end is greater than the width of the small-diameter end, the large-diameter end is fixedly connected to the connecting sleeve, the stirring blades are bent along their width direction, and the sidewalls of the stirring blades have a guide wall inclined inward towards the small-diameter end, a relief wall inclined inward towards the large-diameter end, and a chamfered wall disposed between the guide wall and the relief wall. The guide wall and the chamfered wall are inclined relative to each other, and the relief wall and the chamfered wall are inclined relative to each other.

[0008] During stirring, the stirring shaft drives the connecting sleeve to rotate, and the connecting sleeve drives the stirring blades to rotate. Since the connecting sleeve transmits the rotational power to the stirring blades, the stability of the connection between the stirring blades and the connecting sleeve is ensured by fixing the larger diameter end of the stirring blades to the connecting sleeve. By bending the stirring blades along the width direction, the contact area with the stirred material is increased, improving the stirring effect of the stirring blades. In order to ensure the stirring effect between the larger diameter end of the stirring blades and the connecting sleeve, the relief wall is inclined inward towards the larger diameter end, reducing the gap between the relief wall and the outer wall of the connecting sleeve, and improving the stirring effect on the stirred material in the gap. However, after the gap is reduced, the width of the entire stirring blade will increase. In order to avoid the stirring blades being too large and requiring further increase in stirring power, this application has a chamfered wall on the side wall of the stirring blade, and the chamfered wall is located between the relief wall and the guide wall. By setting the chamfered wall, the width of the stirring blade is reduced, thereby reducing the power when the stirring shaft rotates, so that the stirring blade can ensure a good stirring effect at both the larger and smaller diameter ends. Furthermore, by fixing the larger diameter end to the connecting sleeve, the connection strength of the stirring blade is also ensured.

[0009] In the aforementioned agitator, the agitator blades are symmetrical from left to right, and the large-diameter end is fixedly connected to the connecting sleeve at an axial angle downward along the agitator shaft.

[0010] The shape of the stirring blades makes the stirring force more uniform, and the large-diameter end is inclined downward and fixed to the connecting sleeve, so that the liquid remaining on the large-diameter end can be quickly discharged, improving the stirring effect of the large-diameter end.

[0011] In the aforementioned stirrer, the guide wall, the chamfered wall, and the relief wall are all planes, and the angle formed by the plane containing the guide wall and the plane containing the chamfered wall is greater than the angle formed by the plane containing the relief wall and the plane containing the chamfered wall.

[0012] By setting up the above structure, the included angle between the relief wall and the chamfered wall is smaller, the linear velocity at the guide wall is smaller, and the linear velocity at the relief wall is larger. This ensures good mixing efficiency while reducing the driving force required for the mixing shaft, thereby improving mixing efficiency.

[0013] In the aforementioned stirrer, the angle A formed by the plane containing the guide wall and the plane containing the chamfered wall is 170° to 175°.

[0014] This angle setting allows the guide wall to not only guide the flow but also quickly stir the material, improving stirring efficiency.

[0015] In the aforementioned mixer, the angle B formed by the plane containing the yield wall and the plane containing the chamfered wall is 160° to 168°.

[0016] This angle setting allows for a smaller gap between the mounting wall and the connecting sleeve while ensuring the width of the blades, enabling rapid and stable mixing of the material and improving mixing efficiency.

[0017] Compared with existing technologies, this stirrer has the following advantages:

[0018] 1. By having a chamfered wall on the side wall of the stirring blade, and the chamfered wall being located between the relief wall and the guide wall, the width of the stirring blade is reduced by setting the chamfered wall, thereby reducing the power of the stirring shaft when rotating. This allows the stirring blade to maintain a good stirring effect at both the large-diameter end and the small-diameter end. Furthermore, the connection strength of the stirring blade is also ensured by fixing the large-diameter end to the connecting sleeve.

[0019] 2. The above-mentioned angle setting makes the included angle between the relief wall and the chamfered wall larger, the linear velocity at the guide wall is smaller, and the linear velocity at the relief wall is larger. This ensures good mixing efficiency while reducing the driving force required for the mixing shaft, thus improving mixing efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure after the connecting sleeve is connected to the stirring blade in this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the stirring blade in this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of this utility model.

[0023] Figure 4 This is a side view of the connecting sleeve and the stirring blade in this utility model.

[0024] Figure 5 This is a top view of the connecting sleeve and the stirring blade in this utility model.

[0025] In the figure, 1 is the stirring shaft; 2 is the connecting sleeve; 3 is the stirring blade; 31 is the large diameter end; 31a is the guide wall; 31b is the relief wall; 31c is the chamfered wall; and 32 is the small diameter end. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] like Figure 1 As shown, this stirrer includes a stirring shaft 1 and a connecting sleeve 2 sleeved on the stirring shaft 1, with at least three stirring blades 3 connected to the connecting sleeve 2.

[0028] Specifically, such as Figure 1-3 As shown, one end of the stirring blade 3 is a large-diameter end 31, and the other end is a small-diameter end 32. The width of the large-diameter end 31 is greater than the width of the small-diameter end 32. The large-diameter end 31 is fixedly connected to the connecting sleeve 2. The stirring blade 3 is bent along its width direction. The side wall of the stirring blade 3 has a guide wall 31a that is inclined inward toward the end of the small-diameter end, a relief wall 31b that is inclined inward toward the end of the large-diameter end 31, and a chamfered wall 31c that is disposed between the guide wall 31a and the relief wall 31b. The guide wall 31a and the chamfered wall 31c are inclined relative to each other, and the relief wall 31b and the chamfered wall 31c are inclined relative to each other.

[0029] During mixing, the stirring shaft 1 drives the connecting sleeve 2 to rotate, and the connecting sleeve 2 drives the stirring blade 3 to rotate. Since the connecting sleeve 2 transmits the rotational force to the stirring blade 3, the stability of the connection between the stirring blade 3 and the connecting sleeve 2 is ensured by fixing the wider end 31 of the stirring blade 3 to the connecting sleeve 2. By bending the stirring blade 3 along its width, the contact area with the material being mixed is increased, thus improving the mixing effect of the stirring blade 3. To ensure the mixing effect between the wider end 31 of the stirring blade 3 and the connecting sleeve 2, the relief wall 31b is inclined inward toward the end of the wider end 31, reducing the gap between the relief wall 31b and the outer wall of the connecting sleeve 2. The gap improves the mixing effect of the material in the gap, but the width of the entire mixing blade 3 will increase after the gap becomes smaller. In order to avoid the mixing blade 3 being too large and requiring further improvement of the mixing power, this application has a chamfered wall 31c on the side wall of the mixing blade 3. The chamfered wall 31c is located between the relief wall 31b and the guide wall 31a. By setting the chamfered wall 31c, the width of the mixing blade 3 is reduced, thereby reducing the power of the mixing shaft 1 when rotating. This allows the mixing blade 3 to maintain a good mixing effect at both the large diameter end 31 and the small diameter end 32. Furthermore, the connection strength of the mixing blade 3 is also ensured by fixing the large diameter end 31 to the connecting sleeve 2.

[0030] like Figure 2 and Figure 5As shown, each stirring blade 3 is symmetrical about left and right, and the large diameter end 31 is fixedly connected to the connecting sleeve 2 by tilting downward along the stirring shaft 1.

[0031] like Figure 4 and Figure 5 As shown, the angle formed by the plane where the guide wall 31a is located and the plane where the chamfered wall 31c is located is greater than the angle formed by the plane where the yield wall 31b is located and the plane where the chamfered wall 31c is located. The angle A formed by the plane where the guide wall 31a is located and the plane where the chamfered wall 31c is located is 170° to 175°, and the angle B formed by the plane where the yield wall 31b is located and the plane where the chamfered wall 31c is located is 160° to 168°. The guide wall 31a, the yield wall 31b and the chamfered wall 31c are all planes.

[0032] like Figure 4 and Figure 5 As shown, three stirring blades 3 are fixedly connected to the connecting sleeve 2. The connecting sleeve 2 is a hollow tube. The three stirring blades 3 are evenly distributed along the axial direction on the outer side wall of the connecting sleeve 2. The large diameter end 31 can be folded down to form a guide plate, which further facilitates drainage.

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A stirrer comprising a stirring shaft (1) and a coupling sleeve (2) which is fitted onto the stirring shaft (1), at least three stirring blades (3) being attached to the coupling sleeve (2), characterized in that One end of the stirring blade (3) is a large diameter end (31), and the other end is a small diameter end (32). The width of the large diameter end (31) is greater than the width of the small diameter end (32). The large diameter end (31) is fixedly connected to the connecting sleeve (2). The stirring blade (3) is bent along its width direction. The side wall of the stirring blade (3) has a guide wall (31a) that is inclined inward toward the end of the small diameter end, a relief wall (31b) that is inclined inward toward the end of the large diameter end (31), and a chamfered wall (31c) that is disposed between the guide wall (31a) and the relief wall (31b). The guide wall (31a) and the chamfered wall (31c) are inclined relative to each other. The relief wall (31b) and the chamfered wall (31c) are inclined relative to each other.

2. The beater of claim 1, wherein The stirring blades (3) are symmetrical from left to right, and the large-diameter end (31) is fixedly attached to the connecting sleeve (2) at an axial angle downward along the stirring shaft (1).

3. A beater according to claim 1 or 2, characterised in that The flow guide wall (31a), the chamfered wall (31c), and the clearance wall (31b) are all planes. The angle formed by the plane where the flow guide wall (31a) is located and the plane where the chamfered wall (31c) is located is greater than the angle formed by the plane where the clearance wall (31b) is located and the plane where the chamfered wall (31c) is located.

4. The beater of claim 3, wherein The angle A formed by the plane where the guide wall (31a) is located and the plane where the chamfered wall (31c) is located is 170° to 175°.

5. The beater of claim 3 wherein, The angle B formed by the plane where the yielding wall (31b) is located and the plane where the chamfered wall (31c) is located is 160° to 168°.

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