A stirring impeller and a stirring device

Abstract

The utility model discloses a stirring impeller and stirring equipment, all include: shaft sleeve, at least two strip's rotating paddle, the axial interval of around shaft sleeve is evenly distributed, and rotating paddle is along the radial outward extension of shaft sleeve and is arranged, and the downside of rotating paddle has the lower pressure inclined plane that can form the acute angle between the inner bottom surface of material bucket, upper connecting piece is located the top of shaft sleeve, and upper connecting piece is connected with every rotating paddle between all and has the stirring blade that sets up around shaft sleeve circumferential ring and surrounds one piece. When stirring operation, motor output shaft drives shaft sleeve to rotate to drive rotating paddle and stirring blade to rotate together, and stirring blade will be located in the accommodation channel of refrigeration evaporator's outer peripheral wall's frozen food and scrape and stir, and rotating paddle utilizes lower pressure inclined plane to drive the frozen food on the inner bottom surface of material bucket to rotate according to the preset hourglass direction and discharges downward in the process of rotating, avoids the frozen food residue, and is helpful to frozen food concentrated output.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a stirring impeller and stirring device. Background Technology

[0002] As a core component of cold beverage equipment, slush machines are widely used in dessert shops, fast food chains, coffee shops, and home consumption scenarios. Slush machines produce frozen foods such as smoothies, ice cream, and sorbets by stirring pre-cooled raw materials at low temperatures and then outputting the product.

[0003] The working principle of a snow melting machine is as follows: first, a refrigeration evaporator cools the liquid raw materials in the tank into ice flakes. Then, a stirring impeller scrapes off the ice flakes adhering to the surface of the refrigeration evaporator, and the mixture is stirred at a low temperature for a certain period of time to form frozen food. A typical stirring impeller includes a support connected to the motor shaft and spiral blades mounted on the support and surrounding the refrigeration evaporator. The spiral blades rotate multiple times around the shaft, with a small helix angle, making it easy for frozen food to remain on the surface of the spiral blades, while the remaining frozen food accumulates disorderly in different positions within the tank. Furthermore, the support structure is relatively bulky, resulting in significant resistance to the raw materials during stirring. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide a stirring impeller that reduces frozen food residue and helps to stably and centrally output frozen food; the other objective is to provide a stirring device using the above-mentioned stirring impeller.

[0005] A stirring impeller according to a first aspect of the present invention includes: a bushing for connecting a motor output shaft; at least two strip-shaped rotating blades, all of which are evenly distributed circumferentially around the bushing at axial intervals, the rotating blades being disposed on the outer peripheral wall of the bushing and extending outward along the radial direction of the bushing, the lower side of each rotating blade having a downward pressing slope, the downward pressing slope forming an acute downward pressing angle with the inner bottom surface of the material barrel, and each of the acute downward pressing angles being equal in the clockwise direction of rotation of the bushing; an upper connecting member located above the bushing, the upper connecting member being connected to each of the rotating blades by a stirring blade arranged circumferentially around the bushing, the upper connecting member, all of the rotating blades, and all of the stirring blades forming a receiving channel for accommodating a refrigeration evaporator.

[0006] The stirring impeller according to the embodiment of this utility model has at least the following beneficial effects: During the stirring operation, the motor output shaft drives the bushing to rotate, which in turn drives the rotating blades and stirring blades on the bushing to rotate together. The stirring blades scrape and stir the frozen food on the outer wall of the refrigeration evaporator in the containment channel. During the rotation, the rotating blades use the downward pressure slope to drive the frozen food to rotate in a preset clockwise direction and move downward, which avoids the frozen food remaining at the bottom of the container and helps to concentrate and stably output the frozen food.

[0007] In some embodiments of this utility model, the rotating blade is a long strip plate with a uniform thickness, and the rotating blade is arranged at an angle relative to the horizontal plane to form the downward pressing slope and the inclined back side opposite to the downward pressing slope.

[0008] In some embodiments of this utility model, a support plate is connected between the outer peripheral wall of the bushing and the inclined back surface.

[0009] In some embodiments of this utility model, the upper edge of the rotating blade is lower than or level with the upper end face of the bushing, and the support plate extends horizontally outward from the upper end face of the bushing to connect with the inclined back side.

[0010] In some embodiments of this utility model, two rotating blades are provided, and the length directions of the two rotating blades are located in the same horizontal straight line direction. The upper connecting member is a circular ring plate coaxially arranged with the bushing. The upper end of the stirring blade is connected to the lower end face of the circular ring plate, and the lower end of the stirring blade is connected to the corresponding rotating blade.

[0011] In some embodiments of this utility model, the angle at which the stirring blades surround the axial circumference of the bushing is less than 180°.

[0012] In some embodiments of this utility model, the lower end of the stirring blade is connected to the end of the corresponding rotating blade, and the lower part of the stirring blade is provided with a lower pressure plate portion that is axially inclined relative to the bushing, and the lower pressure plate portion intersects with the corresponding lower pressure inclined surface to form an obtuse angle.

[0013] In some embodiments of this utility model, the lower end of the stirring blade is connected to the upper side of the corresponding rotating blade, so that the stirring blade as a whole is located above the downward pressure slope.

[0014] In some embodiments of this utility model, a support member extending axially along the bushing is further connected between the lower end face of the annular plate and the end of the rotating blade, and the support member is connected to the lower end of the stirring blade.

[0015] A mixing device according to a second aspect of this utility model includes a material tank, which is sleeved outside the mixing impeller of any of the above-described technical solutions. The outer periphery of the bottom wall of the material tank is provided with a discharge port facing the downward-pressing inclined surface and a switching mechanism for opening and closing the discharge port. During the rotation of the mixing impeller, this mixing device utilizes the downward-pressing inclined surface to drive frozen food to rotate clockwise and move downwards in a preset direction, preventing frozen food residue from remaining at the bottom of the material tank and facilitating a concentrated and stable output of frozen food.

[0016] Additional aspects and advantages of this 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. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a cross-sectional schematic diagram of an embodiment of the stirring impeller of this utility model applied to the material tank of a stirring device; Figure 2 yes Figure 1 A schematic diagram of the stirring impeller in the embodiment; Figure 3 yes Figure 2 A diagram from another perspective; Figure 4 This is a schematic diagram of another embodiment of the stirring impeller of this utility model.

[0019] Figure label: Material bucket 10; motor output shaft 20; refrigeration evaporator 30; bushing 100; support plate 110; rotating blade 200; downward pressure slope 210; inclined back side 220; upper connector 300; stirring blade 400; lower pressure plate 410; accommodating channel 500; support member 600. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] See Figures 1 to 3 This utility model discloses a stirring impeller, comprising: a bushing 100 for connecting a motor output shaft 20; at least two strip-shaped rotating blades 200, all of which are evenly distributed circumferentially around the bushing 100 at axial intervals. The rotating blades 200 are disposed on the outer peripheral wall of the bushing 100 and extend radially outward from the bushing 100. Each rotating blade 200 has a downward-pressing inclined surface 210 on its lower side, which is capable of contacting the inner bottom surface of the material container 10. A downward acute angle is formed, and the angle of each downward acute angle is equal in the clockwise direction of the rotation of the bushing 100; the upper connector 300 is located above the bushing 100, and a stirring blade 400 is connected between the upper connector 300 and each of the rotating blades 200 and arranged circumferentially around the bushing 100. The upper connector 300, all the rotating blades 200 and all the stirring blades 400 together form a receiving channel 500 for accommodating the refrigeration evaporator 30.

[0025] During the stirring operation, the motor output shaft 20 drives the bushing 100 to rotate, thereby driving the rotating blade 200 and stirring blade 400 on the bushing 100 to rotate together. The stirring blade 400 scrapes and stirs the frozen food on the outer peripheral wall of the refrigeration evaporator 30 located in the accommodating channel 500. During the rotation, the rotating blade 200 uses the downward pressure slope 210 to drive the frozen food to rotate in a preset clockwise direction and move downward, avoiding the frozen food remaining at the bottom of the material tank 10, which helps to concentrate and stably output the frozen food.

[0026] See Figure 2 and Figure 3 In some embodiments of this utility model, the rotating blade 200 is a long strip plate with a uniform thickness. The rotating blade 200 is arranged at an angle relative to the horizontal plane to form the downward pressing slope 210 and the inclined back surface 220 opposite to the downward pressing slope 210. Understandably, the refrigeration evaporator 30 of the mixing equipment is located inside the accommodating channel 500, and the material tank 10 of the mixing equipment is fitted outside the mixing impeller. The downward pressing slope 210 of the rotating blade 200 faces the inner bottom surface of the material tank 10. When the mixing impeller rotates in a preset clockwise direction, the frozen food located between the downward pressing slope 210 and the inner bottom surface of the material tank 10 is driven to generate a motion state of rotating and moving downward at the same time. This helps the frozen food to be smoothly discharged from the discharge port on the bottom wall of the material tank 10. The frozen food that fails to be discharged can cross the inclined back side 220 and return to the rear of the rotation direction of the rotating blade 200. Then, it is driven by another rotating blade 200 to rotate and move downward. This is beneficial for the continuous mixing of the frozen food and reduces the resistance of mixing and the possibility of jamming.

[0027] See Figure 2 In some embodiments of this utility model, in order to prevent irreversible deformation of the rotating blade 200 when subjected to force and to ensure stable stirring operation, a support plate 110 is connected between the outer peripheral wall of the bushing 100 and the inclined back surface 220.

[0028] See Figure 2 In some embodiments of this utility model, the upper edge of the rotating blade 200 is lower than or level with the upper end face of the bushing 100, and the support plate 110 extends horizontally outward from the upper end face of the bushing 100 to connect with the inclined back surface 220. It should be noted that the refrigeration evaporator 30 is located in the receiving channel 500 and directly above the bushing 100. The arrangement of the support plate 110 avoids interference between the rotating blade 200 and the bottom of the refrigeration evaporator 30, and also facilitates the sliding of fluid frozen food across the inclined back surface 220.

[0029] See Figure 2 or Figure 4 In some embodiments of this utility model, two rotating blades 200 are provided, with their length directions aligned horizontally. The upper connecting member 300 is a circular annular plate coaxially arranged with the bushing 100. The upper end of the stirring blade 400 is connected to the lower end face of the circular annular plate, and the lower end of the stirring blade 400 is connected to the corresponding rotating blade 200. It is understood that the outer diameter of the circular annular plate matches the inner diameter of the mixing tank 10, preventing some of the frozen food from overflowing upwards during mixing. The circular annular plate, the two rotating blades 200, and the two stirring blades 400 together form a simple, hollow frame structure, which helps ensure the flowability of the frozen food in the tank 10 while avoiding any cantilever structure that could cause deformation.

[0030] See Figure 2 and Figure 3 In some embodiments of this utility model, the angle at which the stirring blade 400 surrounds the axial circumference of the bushing 100 is less than 180°. Compared with the traditional stirring blade 400 which is spirally wound into more than one turn, the angle at which the stirring blade 400 surrounds the axial circumference of the bushing 100 is less than 180°, which is conducive to the raw material sliding down the slope of the stirring blade 400 and reducing rotational resistance.

[0031] See Figure 2 and Figure 3 In some embodiments of this utility model, the lower end of the stirring blade 400 is connected to the end of the corresponding rotating blade 200. The lower part of the stirring blade 400 is provided with a lower pressure plate portion 410 that is axially inclined relative to the bushing 100. The lower pressure plate portion 410 intersects with the corresponding lower pressure slope 210 to form an obtuse angle. It should be noted that for frozen foods with low viscosity and good flowability, relying solely on the lower pressure slope 210 can easily cause the frozen food to escape. The combined action of the lower pressure plate portion 410 and the lower pressure slope 210 can tilt the frozen food located between them downwards towards the discharge port, which is beneficial to improving the discharge efficiency under the above conditions.

[0032] It should be noted that for frozen foods with high viscosity and moderate flowability, if an angle is formed between the lower end of the stirring blade 400 and the rotating blade 200, it can actually obstruct the discharge of the frozen food. Therefore, please refer to [the relevant documentation / reference needed]. Figure 4In some embodiments of this invention, the lower end of the stirring blade 400 is connected to the upper side of the corresponding rotating blade 200, so that the stirring blade 400 is positioned entirely above the downward pressing inclined surface 210. The stirring blade 400 rotates to scrape frozen food off the surface of the refrigeration evaporator 30, while the rotating blade 200 serves to discharge material downwards while stirring. The functions of the stirring blade 400 and the rotating blade 200 do not interfere with each other.

[0033] See Figure 2 or Figure 4 In some embodiments of this utility model, in order to further improve the structural strength of the stirring impeller, a support member 600 extending axially along the bushing 100 is also connected between the lower end face of the annular plate and the end of the rotating blade 200. The support member 600 is connected to the lower end of the stirring blade 400.

[0034] See Figure 1 This utility model also discloses a mixing device, including a material tank 10. The material tank 10 is sleeved outside the mixing impeller of any of the above-mentioned technical solutions. The outer peripheral edge of the bottom wall of the material tank 10 is provided with a discharge port facing the downward pressing slope 210 and a switching mechanism for opening and closing the discharge port. During the rotation of the mixing impeller, this mixing device uses the downward pressing slope 210 to drive the frozen food to rotate in a preset clockwise direction and move downward, avoiding frozen food residue at the bottom of the material tank 10 and helping to concentrate and stably output the frozen food.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A stirring impeller, characterized in that, include: Bushing (100) is used to connect the motor output shaft (20); At least two strip-shaped rotating blades (200) are arranged in a uniform circumferential pattern around the axial direction of the bushing (100). The rotating blades (200) are disposed on the outer peripheral wall of the bushing (100) and extend outward along the radial direction of the bushing (100). The lower side of the rotating blades (200) has a downward pressing slope (210). The downward pressing slope (210) can form a downward pressing acute angle with the inner bottom surface of the material barrel (10). In the clockwise direction of the rotation of the bushing (100), the angle of each downward pressing acute angle is equal. The upper connector (300) is located above the bushing (100). Each of the upper connector (300) and each of the rotating blades (200) is connected to a stirring blade (400) that is arranged around the bushing (100). The upper connector (300), all the rotating blades (200) and all the stirring blades (400) form a receiving channel (500) for accommodating the refrigeration evaporator (30).

2. The stirring impeller according to claim 1, characterized in that: The rotating blade (200) is a long strip with a uniform thickness. The rotating blade (200) is arranged at an angle relative to the horizontal plane to form the downward pressing slope (210) and the inclined back surface (220) opposite to the downward pressing slope (210).

3. The stirring impeller according to claim 2, characterized in that: A support plate (110) is connected between the outer peripheral wall of the bushing (100) and the inclined back surface (220).

4. The stirring impeller according to claim 3, characterized in that: The upper edge of the rotating blade (200) is lower than or level with the upper end face of the bushing (100), and the support plate (110) extends horizontally outward from the upper end face of the bushing (100) to the inclined back surface (220).

5. The stirring impeller according to claim 1, characterized in that: Two rotating blades (200) are provided, and the length directions of the two rotating blades (200) are located in the same horizontal straight direction. The upper connecting member (300) is a circular plate coaxially arranged with the bushing (100). The upper end of the stirring blade (400) is connected to the lower end face of the circular plate, and the lower end of the stirring blade (400) is connected to the corresponding rotating blade (200).

6. The stirring impeller according to claim 5, characterized in that: The angle at which the stirring blade (400) surrounds the axial circumference of the bushing (100) is less than 180°.

7. The stirring impeller according to claim 5, characterized in that: The lower end of the stirring blade (400) is connected to the end of the corresponding rotating blade (200). The lower part of the stirring blade (400) is provided with a lower pressure plate (410) that is axially inclined relative to the bushing (100). The lower pressure plate (410) intersects with the corresponding lower pressure inclined surface (210) to form an obtuse angle.

8. The stirring impeller according to claim 5, characterized in that: The lower end of the stirring blade (400) is connected to the upper side of the corresponding rotating blade (200) so that the stirring blade (400) is located above the downward pressure slope (210).

9. A stirring impeller according to claim 5, characterized in that: A support member (600) extending axially along the bushing (100) is also connected between the lower end face of the annular plate and the end of the rotating blade (200), and the support member (600) is connected to the lower end of the stirring blade (400).

10. A mixing device, comprising a material tank (10), the material tank (10) being sleeved on the outside of a mixing impeller according to any one of claims 1-9, wherein the outer peripheral edge of the bottom wall of the material tank (10) is provided with a discharge port facing the downward pressure slope (210) and a switching mechanism for opening and closing the discharge port.

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