Stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid

Abstract

The utility model provides a stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid, which comprises an anchor paddle and a movable scraping plate, the movable scraping plate is sleeved on stirring arms on two sides of the anchor paddle, the movable scraping plate comprises a hanging part and an extension part, the hanging part is a three-edged cylinder, and the extension part is a rectangular plate and is fixedly arranged on the side surface of the three-edged cylinder. The scraping plate has the beneficial effects that the hanging part of the scraping plate is arranged to be the three-edged cylinder, so that the scraping plate has good mobility under the condition of realizing normal wall scraping, and the problems of material hanging, blockage and kettle wall collision when the scraping plate is used for mixing solid powder are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring devices, in particular to a stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid. Background Art

[0002] Wall sticking is a common problem in both pure solid and solid-liquid mixing systems, often leading to reduced mixing efficiency and significantly deteriorating heat and mass transfer in the sticking area. This wall sticking not only affects the uniformity and stability of the mixing system but can also adversely affect product quality and production efficiency.

[0003] To effectively address this issue, technicians often use scraping agitators. Their mechanical scraping design utilizes friction between the scraping modules on the impellers and the reactor wall to efficiently remove material adhering to the reactor wall. This scraping action not only ensures smooth operation of the agitation system but also significantly improves heat and mass transfer, making the entire agitation process more efficient and stable.

[0004] Existing technologies utilize various impeller designs to address the deterioration of mass and heat transfer caused by viscous materials and wall adhesion. These impellers are primarily designed for highly viscous liquids or solid-liquid mixtures, particularly those with a high liquid content. While these impellers exhibit excellent mixing performance, pure solid powder systems often experience problems with impeller jamming and the accumulation of large amounts of solid dust, as solid powders often have significantly lower fluidity than liquids and may even lack self-flowing properties.

[0005] For example, the stirring described in patent CN214020317 is very common in small-scale test equipment, but when it is used for solid powder mixing, the phenomenon of excessive ribbon hanging material is serious, and the stirring structure is complicated and difficult to manufacture. The stirring structure shown in patent CN213286393 is simple and can be used for production or small-scale tests at the same time, but the added scraper stirring resistance is large, which easily causes the stirring to get stuck. During use, the axial center deflection, collision with the reactor wall and other phenomena may occur due to uneven weighting and uneven resistance on both sides, and even damage to the reactor. Therefore, in actual use, a stirring device is needed that can stir solid powder without causing problems such as hanging material, getting stuck, and collision with the reactor wall, while also maintaining a good mixing effect on high-viscosity liquids. Utility Model Content

[0006] In order to solve the problems of material sticking, jamming and hitting the kettle wall when the scraper type agitator is used for solid powder mixing;

[0007] The utility model provides a stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid, comprising an anchor paddle and a movable scraper. The movable scraper is sleeved on the stirring arms on both sides of the anchor paddle. The movable scraper comprises a hanging part and an extension part. The hanging part is a triangular cylinder, and the extension part is a rectangular plate fixedly arranged on the side of the triangular cylinder.

[0008] As a preferred solution, the anchor propeller includes a central shaft, a transverse section and a vertical section. Two transverse sections are fixedly provided at the bottom end of the central shaft, and the outer ends of the transverse sections are fixedly connected to the lower ends of the vertical sections.

[0009] As a preferred solution, the movable scraper is sleeved on the vertical section.

[0010] As a preferred solution, a baffle is fixedly provided at the top of the vertical section to prevent the movable scraper from loosening.

[0011] As a preferred solution, the cross section of the hanging portion is an isosceles right triangle.

[0012] As a preferred solution, the length of the long side of the stirring arm is greater than the height of the triangle inside the triangular tube of the hanging part.

[0013] As a preferred solution, a vertical fixed axis is fixedly provided on the transverse section, and a through hole is provided at a corresponding position of the hanging portion for cooperation.

[0014] As a preferred solution, the width of the vertical section is equal to the minimum side length of the hanging portion.

[0015] As a preferred solution, the outer corner wall of the extension portion is configured to be arc-shaped.

[0016] As a preferred solution, the surface of the extension portion is provided with a polytetrafluoroethylene coating.

[0017] The beneficial effects of the utility model are:

[0018] 1. The utility model sets the scraper's hanging part as a triangular cylinder, which ensures that the scraper has good mobility when scraping the wall normally, avoiding the problems of hanging, getting stuck and hitting the kettle wall when used for solid powder mixing.

[0019] 2. The utility model adapts the size of the stirring paddle to the size of the movable scraper and provides a fixed shaft, thereby avoiding not only jamming but also the problem of periodic knocking on the kettle wall due to shaking of the scraper during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein

[0021] Figure 1 This is a schematic structural diagram of Example 1 of the present utility model.

[0022] Figure 2 This is a structural diagram of Example 2 of the present utility model.

[0023] Figure 3 This is a structural diagram of another angle of embodiment 2 of the present invention.

[0024] Figure 4 This is a schematic diagram of the operation of the utility model.

[0025] The reference numerals in the accompanying drawings are:

[0026] 1. Anchor propeller, 11. Central axis, 12. Horizontal section, 13. Vertical section, 14. Fixed axis, 2. Movable scraper, 21. Hanging part, 22. Extension part, 3. Baffle. DETAILED DESCRIPTION

[0027] To illustrate the features of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Example 1:

[0029] See also Figure 1 and Figure 4 , an embodiment of the utility model provides a stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid, comprising an anchor paddle 1 and a movable scraper 2, the movable scraper 2 being sleeved on the stirring arms on both sides of the anchor paddle 1, wherein the anchor paddle 1 comprises a central axis 11, a transverse section 12 and a vertical section 13, two transverse sections 12 are fixedly arranged at the bottom end of the central axis 11, and the outer ends of the transverse sections 12 are fixedly connected to the lower ends of the vertical sections 13, the movable scraper 2 is sleeved on the vertical section 13, the movable scraper 2 comprises a hanging portion 21 and an extension portion 22, the hanging portion 21 is a triangular cylinder, and the extension portion 22 is a rectangular plate fixedly arranged on the side of the triangular cylinder. In addition, in this embodiment, the outer corner wall of the extension portion is set to an arc shape, and a polytetrafluoroethylene coating is provided on the surface of the extension portion to avoid excessive friction on the kettle wall during scraping and thus damage.

[0030] Preferably, in this embodiment, a baffle 3 is fixedly provided at the top end of the vertical section 13 to prevent the movable scraper from loosening.

[0031] Preferably, in this embodiment, the cross section of the hanging portion 21 is an isosceles right triangle.

[0032] Preferably, the length of the long side of the stirring arm in this embodiment is greater than the height of the triangle inside the triangular tube of the hanging part 21.

[0033] The operation method of this embodiment:

[0034] After stirring, the movable scraper 2 is unfolded under the action of centrifugal force and enters the forward scraping state (such as Figure 4 ), the movable scraper 2 contacts the kettle wall and scrapes up the material stuck to the kettle wall; when the scraper needs to be removed, rotate the stirring paddle in the opposite direction to make the movable scraper 2 rotate inward, then remove the baffle 3, and lift up to take out the movable scraper 2.

[0035] This embodiment ensures that the scraper has good mobility when scraping the wall normally by setting the scraper's hanging part as a triangular cylinder, thereby avoiding the problems of material hanging, jamming and hitting the kettle wall when used for solid powder mixing.

[0036] Example 2:

[0037] See also Figure 2 and Figure 3 In this embodiment, based on the embodiment 1, a vertical fixed shaft 14 is fixedly provided on the transverse section 12, and a through hole is provided at the corresponding position of the hanging portion 21 for cooperation, thereby further avoiding the situation in which the movable scraper 2 is reversed and hits the kettle wall in extreme cases. The other parts are arranged the same as those in the embodiment 1 and are not repeated here.

[0038] The above embodiments and accompanying drawings are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. The present invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions, or substitutions made by those skilled in the art within the spirit of the present invention do not depart from the spirit of the present invention and are intended to fall within the scope of the claims of the present invention. Other related technical structures not fully disclosed in this utility model are prior art in the art.

Claims

1. A stirring paddle suitable for stirring high-viscosity solid powders and high-viscosity liquids, characterized by: The invention comprises an anchor paddle (1) and a movable scraper (2), wherein the movable scraper (2) is sleeved on stirring arms on both sides of the anchor paddle (1), and the movable scraper (2) comprises a hanging portion (21) and an extension portion (22), wherein the hanging portion (21) is a triangular cylinder, and the extension portion (22) is a rectangular plate fixedly arranged on the side of the triangular cylinder.

2. The stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid according to claim 1, characterized in that: The anchor-type paddle (1) comprises a central shaft (11), a transverse section (12) and a vertical section (13); two transverse sections (12) are fixedly arranged at the bottom end of the central shaft (11); and the outer ends of the transverse sections (12) are fixedly connected to the lower ends of the vertical sections (13).

3. The stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid according to claim 2, characterized in that: The movable scraper (2) is sleeved on the vertical section (13).

4. The stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid according to claim 2, characterized in that: A baffle (3) is fixedly provided at the top end of the vertical section (13) to prevent the movable scraper from loosening.

5. The stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid according to claim 1, characterized in that: The cross section of the hanging portion (21) is an isosceles right triangle.

6. The stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid according to claim 1, characterized in that: The length of the long side of the stirring arm is greater than the height of the triangle inside the triangular tube of the hanging portion (21).

7. The stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid according to claim 3, characterized in that: The transverse section (12) is fixed with a vertical fixed shaft (14), and a through hole is provided at a corresponding position of the hanging portion (21) for use in conjunction therewith.

8. The stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid according to claim 2, characterized in that: The width of the vertical section (13) is equal to the minimum side length of the hanging portion (21).

9. The stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid according to claim 1, characterized in that: The outer corner wall of the extension portion (22) is configured in an arc shape.

10. The stirring paddle suitable for stirring high-viscosity solid powder and high-viscosity liquid according to claim 1, characterized in that: The surface of the extension portion (22) is provided with a polytetrafluoroethylene coating.

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