A water starch mixer and a method for mixing water starch by using the same

Abstract

The present application relates to a kind of water starch mixers and the method for stirring water starch thereof, wherein water starch mixer includes stirring barrel, stepper motor, stirring shaft, upper layer paddle, middle layer paddle, lower layer paddle, stirring shaft is located in the part of stirring barrel from top to bottom and is provided with three groups of paddle slots, each group of paddle slots is along the axial direction of stirring shaft, and each group of paddle slots is evenly arranged along the circumferential direction of stirring shaft, and the upper end of each paddle slot is provided with a hinge shaft;Upper layer paddle, middle layer paddle, lower layer paddle are all hinged with a paddle slot by corresponding hinge shaft, when stepper motor does not operate, upper layer paddle, middle layer paddle, lower layer paddle are all freely fallen in respective paddle slot.The present application does not need to use high-power motor, uses small-power motor, can realize uniform stirring water starch, motor and three groups of hidden paddle realize perfect combination, energy saving and cost reduction, while reducing the cost of stirring.

Description

Technical Field

[0001] This invention relates to mixers, specifically to a starch mixer and a method for mixing starch. Background Technology

[0002] When cooking hot dishes, the purpose of using cornstarch is threefold: First, it coats the vegetables, locking in moisture and preventing them from dehydrating, thus preserving their nutritional value and tenderness. Second, it thickens the sauce, and with a touch of starch, gives the dish a glossy, translucent appearance, enhancing its appetizing appeal. Third, the coating helps the vegetables absorb flavors more easily, resulting in a smooth and delicious texture. Existing mixers include a mixing motor, a mixing shaft, and mixing blades. The mixing blades are fixed to the mixing shaft, which is driven to rotate by the mixing motor. As the mixing blades rotate with the mixing shaft, they stir the materials to be mixed, making the materials uniformly mixed. However, when this type of mixer is used for mixing water starch, the starch and water are initially separated into layers, with the starch at the bottom. When the mixing blades are in the water, the rotation of the water drives the rotation of the starch at the bottom. However, wet starch is sticky, and it takes a long time to gradually stir the starch at the bottom, resulting in low mixing efficiency. When the mixing blades are in the wet starch, the stickiness of the wet starch causes high rotational resistance of the mixing blades, requiring a higher power of the mixing motor, resulting in a situation where the motor is too powerful for the material, leading to high energy consumption and waste. Summary of the Invention

[0003] One object of the present invention is to provide a starch mixer that solves the problems of low mixing efficiency or high energy consumption in existing mixers for mixing starch; another object of the present invention is to provide a method for mixing starch using such a starch mixer.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows: This water starch mixer includes a mixing tank, a stepper motor, a mixing shaft, upper blades, middle blades, and lower blades. The part of the mixing shaft located in the mixing tank is provided with three sets of blade grooves from top to bottom. Each set of blade grooves is arranged along the axial direction of the mixing shaft, and each set of blade grooves is evenly arranged along the circumference of the mixing shaft. A hinge shaft is provided at the upper end of each blade groove. The upper blades, middle blades, and lower blades are all hinged to a blade groove through corresponding hinge shafts. When the stepper motor is not running, the upper blades, middle blades, and lower blades fall freely into their respective blade grooves.

[0005] In the above scheme, the upper layer blades are large blades, while the middle and lower layer blades are small blades. The upper stirring shaft corresponding to the upper layer blades is thicker than the stirring shaft corresponding to the middle and lower layer blades.

[0006] In the above scheme, each set of blade slots consists of two blade slots, which are arranged symmetrically.

[0007] In the above scheme, the opening direction of the upper and lower blades is perpendicular to the opening direction of the middle blade.

[0008] In the above scheme, the opening of the mixing tank is connected to the stepper motor via a short circuit. The output shaft of the stepper motor is connected to the mixing shaft via a coupling. The coupling and the mixing shaft outside the mixing tank are located within the short circuit, and a bearing is installed between the mixing shaft and the short circuit.

[0009] In the above solution, a sealing ring is set at the upper port of the shorting joint, and the sealing ring is located between the shorting joint and the stirring shaft. A mechanical seal is set below the sealing ring. By setting two-stage sealing, a very good sealing effect is achieved, which greatly protects the stepper motor.

[0010] The above-mentioned starch mixer also includes a motor controller and an operation panel. Both the stepper motor and the operation panel are connected to the motor controller to control the stepper motor.

[0011] The above method for mixing starch in a starch mixer:

[0012] Add starch and water to the mixing tank, with the starch layer at the bottom and the water layer on top. The upper impeller is in the water layer, while the middle and lower impellers are in the starch layer. Start the stepper motor at low speed to overcome the resistance of the starch to the mixing shaft, then slowly increase the speed until the upper impeller opens under centrifugal force, stirring the water layer and causing it to swirl, which in turn causes the starch layer to swirl. As the upper part of the starch layer gradually dissolves to form a dissolved layer, the resistance of the starch in the dissolved layer is greatly reduced. The middle impeller in the dissolved layer opens under centrifugal force and participates in the stirring. The middle impeller also begins to stir the dissolved layer, causing the starch layer below it to swirl. As the lower part of the starch layer gradually dissolves to form a dissolved layer, the lower impeller in the dissolved layer also fully opens under centrifugal force and participates in the stirring until all the precipitated starch is mixed with water to form a homogeneous mixture that meets the usage standards. Beneficial effects

[0013] 1. The three sets of blades in this invention are concealed blades. When the stepper motor is not running, all three sets of blades are hidden in their respective blade slots. By setting three sets of concealed blades, when stirring begins, the blades in the starch layer do not need to overcome the starch resistance to rotate and basically do no work. The stirring is done by the upper blades in the water layer, while the starch around them dissolves to form a dissolved layer. When the resistance decreases, they open to do work. Therefore, there is no need to use a high-power motor. A low-power motor can be used to stir water and starch. The motor and the three sets of concealed blades are perfectly combined, saving energy and reducing consumption, while also reducing stirring costs.

[0014] 2. In this invention, the opening direction of the upper and lower blades is perpendicular to the opening direction of the middle blade. Due to the cross-setting of the opening directions, the stirring force is improved and more thorough stirring is achieved.

[0015] 3. During the stirring process of this invention, the starch layer gradually descends. At low speed start-up, the resistance of the starch to the stirring shaft is overcome first, then the speed is slowly increased until the large blades at the top layer open under centrifugal force, stirring the water layer and causing it to swirl, which in turn causes the starch layer to swirl and descend. When the precipitated starch layer descends to below the middle blades, the middle blades open under centrifugal force and participate in stirring. When the precipitated starch layer descends to below the bottom blades, the bottom blades fully open under centrifugal force and participate in stirring until all the precipitated starch is mixed with water to form a uniform mixture. This avoids the problem of high rotational resistance that occurs when the blades directly rotate and stir the starch layer, effectively reducing the load on the motor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] In the diagram: 1. Mixing tank; 2. Upper impeller; 3. Mixing shaft; 4. Middle impeller; 5. Lower impeller; 6. Spacer; 7. Sealing ring; 8. Mechanical seal; 9. Bearing; 10. Short circuit; 11. Coupling; 12. Stepper motor. Detailed Implementation

[0018] Combination Figure 1 As shown, this starch mixer includes a mixing tank 1, a stepper motor 12, a mixing shaft 3, upper blades 2, middle blades 4, lower blades 5, a motor controller, and an operating panel. The mixing tank 1 is inverted, with the feeding port located at the top. The mixing tank 1 has a conical neck and shoulder between its opening and body. The portion of the mixing shaft 3 located within the mixing tank 1 has three sets of blade slots arranged from top to bottom. Each set of blade slots is axially aligned with the mixing shaft 3 and evenly distributed circumferentially. Each blade slot has a hinge shaft at its upper end. The upper blades 2, middle blades 4, and lower blades 5 are all hinged to a blade slot via corresponding hinge shafts. When the stepper motor 12 is not running, the upper blades 2, middle blades 4, and lower blades 5 fall freely into their respective blade slots. The stepper motor 12 and the operating panel are both connected to the motor controller for controlling the stepper motor.

[0019] The opening of the mixing tank 1 is connected to the stepper motor 12 via a short circuit 10. The output shaft of the stepper motor is connected to the mixing shaft via a coupling 11. The coupling 11 and the mixing shaft 3 outside the mixing tank are located within the short circuit. A bearing 9 is installed between the mixing shaft 3 and the short circuit 10. A sealing ring 7 is installed at the upper end of the short circuit 10, located between the short circuit 10 and the mixing shaft 3. A mechanical seal 8 is installed below the sealing ring 7. By setting a two-stage seal, a very good sealing effect is achieved, which greatly protects the stepper motor.

[0020] In this embodiment, each set of blade slots consists of two blade slots, which are symmetrically arranged. The opening directions of the upper blade 2 and the lower blade 5 are both perpendicular to the opening direction of the middle blade 4. Due to the intersecting opening directions, the stirring force is improved.

[0021] In this embodiment, the upper blade 2 is a large blade, while the middle blade 4 and the lower blade 5 are small blades. The upper stirring shaft corresponding to the upper blade 2 is thicker than the stirring shaft corresponding to the middle blade 4 and the lower blade 5. The large blade is located at the body of the tank, where the stirring space is large, hence the use of large blades. The middle blade 4 and the lower blade 5 are located at the neck and shoulder of the mixing tank, where the stirring space is relatively smaller, hence the use of small blades. The combination of large and small blades ensures that there are no dead angles in the stirring.

[0022] This method of mixing starch using a starch mixer:

[0023] Starch and water are added to the mixing tank. After the starch settles and separates into layers, the starch layer exerts significant resistance on the shaft and impeller. The concealed impeller effectively reduces rotational resistance. After starch sedimentation, water and starch separate, with the starch layer at the bottom and the water layer on top. The upper impeller 2 is in the water layer, while the middle impeller 4 and the lower impeller 5 are in the starch layer. The stepper motor 12 is started at low speed to overcome the resistance of the starch on the shaft, and then the speed is gradually increased until the upper impeller 2 opens under centrifugal force, stirring the water layer and causing it to swirl, which in turn causes the starch layer to swirl. As the upper part of the starch layer gradually dissolves to form a dissolved layer, the resistance of the dissolved starch layer is greatly reduced. The middle impeller 4, located in the dissolved layer, opens under centrifugal force and participates in the stirring. The middle impeller 4 also begins to stir the dissolved layer, causing the starch layer below it to swirl. As the lower part of the starch layer gradually dissolves to form a dissolved layer, the lower impeller 5, located in the dissolved layer, also fully opens under centrifugal force and participates in the stirring until all the precipitated starch is mixed with water to form a homogeneous mixture that meets the usage standards.

Claims

1. A water starch blender characterized by: The water starch mixer comprises a stirring barrel, a stepping motor, a stirring shaft, upper paddles, middle paddles and lower paddles. The upper paddles are large paddles, and the middle paddles and the lower paddles are small paddles. The water starch mixer further comprises a motor controller and an operation screen. The starch and water are added into the stirring barrel, with the starch layer at the bottom and the water layer at the top.

2. The water-starch blender of claim 1, wherein: The upper paddles are in the water layer, and the middle paddles and the lower paddles are in the starch layer.

3. The water-starch blender of claim 2, wherein: The stepping motor is started at low speed to overcome the resistance of the starch to the stirring shaft, and then is slowly accelerated until the upper paddles are opened under the action of centrifugal force to stir the water layer and make the water layer rotate, thereby driving the starch layer to rotate.

4. The water-starch blender of claim 3, wherein: When the upper part of the starch layer is gradually dissolved to form a dissolved layer, the resistance of the starch in the dissolved layer is greatly reduced, the middle paddles in the dissolved layer are opened under the action of centrifugal force to participate in the stirring.

5. The water-starch blender of claim 4, wherein: The middle paddles also start to stir the dissolved layer and drive the starch layer below the dissolved layer to rotate.

6. The water-starch blender of claim 5, wherein: When the lower part of the starch layer is gradually dissolved to form a dissolved layer, the lower paddles in the dissolved layer are also completely opened under the action of centrifugal force to participate in the stirring, until all the precipitated starch is mixed with water to become a uniform mixed liquid, reaching the use standard. The large paddles are located at the barrel body of the stirring barrel, the middle paddles are located at the shoulder of the stirring barrel, and the lower paddles are located at the neck of the stirring barrel. The large paddles and the small paddles are arranged to realize no dead angle in stirring. The upper end stirring shaft corresponding to the upper paddles is thicker than the stirring shafts corresponding to the middle paddles and the lower paddles. Each group of paddle slots is composed of two paddle slots, and the two paddle slots are symmetrically arranged. The opening directions of the upper paddles and the lower paddles are perpendicular to the opening direction of the middle paddles. The barrel opening of the stirring barrel and the stepping motor are connected through a short connection, the output shaft of the stepping motor and the stirring shaft are connected through a coupling, the coupling and the stirring shaft outside the stirring barrel are located in the short connection, and a bearing is arranged between the stirring shaft and the short connection. A sealing ring is arranged at the upper port of the short connection, the sealing ring is located between the short connection and the stirring shaft, a mechanical seal is arranged below the sealing ring, two-stage sealing is achieved, a very good sealing effect is realized, and the stepping motor is greatly protected.

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