Rapid uniform mixing device for food powder

Abstract

The invention discloses a rapid uniform mixing device for food powder, which comprises a uniform mixing container capable of performing three-dimensional rotary motion, a feed port is arranged at the upper end of the uniform mixing container, a discharge port is arranged at the lower end of the uniform mixing container, and more than one layer of screen is arranged in the uniform mixing container; compared with an existing food powder uniform mixing device, the uniform mixing time required for achieving the same uniform mixing uniformity is much shorter, the uniform mixing uniformity is higher within the same uniform mixing time, and the uniform mixing efficiency is improved.

Description

Technical Field

[0001] The invention relates to special equipment for food processing, in particular to a fast mixing device for food powder. Background Art

[0002] There are two main types of food powder mixing devices on the market. One is to mix food powder by single or multiple stirring; the other is to mix food powder in the mixing barrel by rotating the mixing barrel in multiple dimensions. Both mixing methods have the characteristics of simple structure and simple operation, but there is a problem of low mixing efficiency. In order to improve the mixing uniformity, the mixing time must be extended, and the more food powder is mixed, the longer the mixing time is required, and some even require more than dozens of hours of mixing. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a rapid mixing device for food powder, so as to solve the technical problem of low mixing efficiency of current food powder mixing devices.

[0004] The objective of the present invention is achieved through the following technical solutions: A fast mixing device for food powder comprises a mixing container capable of three-dimensional gyratory motion, a feed inlet at the upper end of the mixing container and a discharge outlet at the lower end, and more than one layer of screens are arranged in the mixing container.

[0005] Furthermore, the mechanism for realizing the three-dimensional rotary motion of the mixing container includes a rotating disk driven by a driving mechanism, on which two oppositely arranged support arms are provided, and third rotating shafts are vertically provided on opposite surfaces of the two support arms, the mixing container is connected to the third rotating shaft, and a rotating mechanism is connected to the third rotating shaft.

[0006] Furthermore, the driving mechanism drives the rotating disk to rotate along an elliptical trajectory.

[0007] Furthermore, the driving mechanism includes a crank mechanism, which is composed of a first rotating shaft, a connecting rod and a second rotating shaft connected to each other, the first rotating shaft is connected to the rotating disk, and the second rotating shaft is connected to the rotating mechanism.

[0008] Furthermore, the mixing container includes a conical feed barrel, a mixing barrel and an inverted conical aggregate bucket, and the feed barrel, the mixing barrel and the aggregate bucket are connected in sequence from top to bottom. The top of the feed barrel is provided with a feed port, and the bottom of the aggregate barrel is provided with a discharge port.

[0009] Furthermore, the screen is multi-layered, and the multi-layer screen is arranged at intervals along the height direction of the mixing container.

[0010] Furthermore, it also includes a base, and the rotating mechanism is fixedly arranged on the base.

[0011] Furthermore, there are multiple driving mechanisms, and the rotating mechanisms of the multiple driving mechanisms are arranged at intervals in the circumferential direction under the rotating disk, and the connecting rods of the multiple driving mechanisms are oriented in the same direction.

[0012] Furthermore, the lower middle of the rotating disc is slidably arranged on the supporting column.

[0013] Furthermore, it also includes a controller, which is electrically connected to the driving circuits of the rotating mechanism and the rotation mechanism respectively.

[0014] The beneficial effects of the present invention are: The invention discloses a rapid mixing device for food powder. The mixing container performs three-dimensional gyratory motion and the screen therein performs three-dimensional gyratory motion. The food powder enters the mixing container from a feed inlet and falls on the screen performing three-dimensional gyratory motion. Due to the porous structure of the screen and the three-dimensional gyratory motion of the screen, the probability of relative displacement of the food powder is greatly increased. The mixed food powder flows out from a discharge port. Compared with the existing food powder mixing device, the mixing time required to achieve the same mixing uniformity is much shorter in the device. The mixing uniformity is higher within the same mixing time, thereby improving the mixing efficiency.

[0015] The rotating mechanism rotates the mixing container via the third rotating shaft, so that the food powder repeatedly passes through all the screens, further increasing the probability of relative displacement of the food powder. The device is compact and occupies less space.

[0016] The crank mechanism makes the rotating disc rotate along an elliptical track, thereby making the mixing container and the screen inside it rotate along the elliptical track, making the structure simpler.

[0017] The mixing container is formed by connecting a conical feeding bucket, a mixing bucket and an inverted conical aggregate bucket, which is convenient for controlling the size of the feeding port and the discharging port.

[0018] The multiple layers of screens in the mixing container multiply the chances of relative displacement of the food powder.

[0019] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings, in which: Figure 1 This is a structural diagram of Embodiment 1 of the present invention.

[0021] Figure 2 This is a stereogram of the second embodiment of the present invention.

[0022] Figure 3 for Figure 2 Schematic diagram of the arrangement of the middle drive mechanism on the base.

[0023] Figure 4 for Figure 2 Schematic diagram of the flip mechanism structure.

[0024] Figure 5 for Figure 2 Front view of the mixing container.

[0025] Figure 6 for Figure 2 Front view of the mixing container.

[0026] Figure 7 This is a sectional view of the front view of the first embodiment of the present invention.

[0027] Figure 8 It is the average coefficient of variation curve in the verification of the mixing efficiency of the present invention.

[0028] In the figure: driving mechanism 1, mixing container 2, mixing barrel 3, collecting barrel 4, feeding port 5, discharging port 6, screen 7, base 8, rotating disc 9, supporting column 10, first rotating shaft 11, connecting rod 12, second rotating shaft 13, rotating mechanism 14, third rotating shaft 15, stepping motor 16, main gear 17, sub gear 18, feeding barrel 19, buckle 20, DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.

[0030] Embodiment 1 like Figure 1 As shown, a fast mixing device for food powder includes two driving mechanisms 1, and the ends of the two driving mechanisms 1 are connected to a mixing container 2. The driving mechanism 1 includes a first rotating shaft 11, a connecting rod 12, a second rotating shaft 13 and a rotating mechanism 14. The rotating mechanism 14 is a rotating motor. The upper end of the first rotating shaft 11 is fixedly connected to the bottom of the mixing container 2, and the lower end of the second rotating shaft 13 is fixedly connected to the rotating motor. One end of the connecting rod 12 is connected to the lower end of the first rotating shaft 11 through a bearing, and the other end is fixedly connected to the upper end of the second rotating shaft 13. The connecting rods 12 of the two driving mechanisms 1 are in the same direction. The mixing container 2 includes a mixing barrel 3 and an inverted cone-shaped collecting barrel 4. The lower end of the mixing barrel 3 is connected to the upper end of the collecting barrel 4. The upper end of the mixing barrel 3 is open, and the opening is a feed port 5. The lower end of the collecting barrel 4 is provided with a discharge port 6. A horizontal screen 7 is provided in the mixing barrel 3.

[0031] When the mixing device is used, food powder is put above the screen 7 in the mixing barrel 3 from the feed port 5, and the rotating motor is started. The rotating motor drives the mixing container 2 and the screen 7 therein to rotate along an elliptical track through the first rotating shaft 11, the connecting rod 12, and the second rotating shaft 13. The food powder passes through the screen 7 and is discharged from the discharge port 6. An external small booster pump is used to inject high-pressure air into the mixing container 2 from the upper feed port 5, and the residual food powder in the mixing container 2 is blown out from the lower discharge port 6, so as to achieve the purpose of cleaning the mixing container 2.

[0032] In the mixing device, the food powder on the screen 7 has a porous structure and rotates in an elliptical trajectory, which greatly increases the probability of relative displacement of the food powder. Compared with the existing food powder mixer 2, the mixing time required to achieve the same mixing uniformity is much shorter, the mixing uniformity is higher within the same mixing time, and the mixing efficiency is improved.

[0033] Embodiment 2 like Figure 2-6 As shown, a fast mixing device for food powder comprises a base 8, on which three driving mechanisms 1 are fixedly arranged, and on which a rotating disc 9 is arranged. The rotating disc 9 is disc-shaped, and a support column 10 is arranged in the middle below the disc-shaped rotating disc 9. The lower end of the support column 10 is fixedly arranged on the base 8, and the upper end and the rotating disc 9 can slide relative to each other. Figure 3 As shown, the driving mechanism 1 includes a first rotating shaft 11, a connecting rod 12, a second rotating shaft 13 and a rotating mechanism 14. The rotating mechanism 14 is a rotating motor, which is fixed on the base 8. The upper end of the first rotating shaft 11 is connected to the rotating disc 9 through a bearing, and the lower end of the second rotating shaft 13 is fixedly connected to the rotating motor. One end of the connecting rod 12 is fixedly connected to the lower end of the first rotating shaft 11, and the other end is fixedly connected to the upper end of the second rotating shaft 13. The rotating motors of the three driving mechanisms 1 are evenly spaced along the circumference of the disc-shaped rotating disc 9, and the connecting rods 12 of the three driving mechanisms 1 face the same direction. Figure 2 As shown, two support arms 14 are fixedly arranged on the disc-shaped rotating disk 9, and the two support arms 14 are mirror images relative to the center of the disc-shaped rotating disk 9. The opposite sides of the two support arms 14 are respectively connected to third rotating shafts 15 through bearings, and a mixing container 2 is connected between the two third rotating shafts 15. The mixing container 2 is coaxial with the rotating disk 9, as shown in FIG. Figure 4 As shown, a stepper motor 16 is provided in a support arm 14, the output shaft of the stepper motor 16 is connected to a main gear 17, and a third rotating shaft 15 on the support arm 14 provided with the stepper motor 16 is connected to a sub-gear 18, and the sub-gear 18 is meshed with the main gear 17. Figure 5As shown, the mixing container 2 includes a conical feed barrel 19, a mixing barrel 3 and a conical collecting barrel 4. The feed barrel 19, the mixing barrel 3 and the collecting barrel 4 are connected in sequence from top to bottom. The feed barrel 19, the mixing barrel 3 and the collecting barrel 4 are detachably connected to each other through a connecting piece. The top of the feed barrel 19 is provided with a feed port 5, and the bottom of the collecting barrel 4 is provided with a discharge port 6. The feed port 5 and the discharge port 6 are both threadedly connected with a lid. The connecting piece includes four buckles 20, and the four buckles 20 are evenly spaced along the circumference of the mixing container 2. Figure 6 As shown, three horizontal screens 7 with different screen apertures are arranged in order from top to bottom in the mixing barrel 3, and the screen apertures can be arbitrarily combined in the range of 2.0 mm to 6.0 mm according to the powder characteristics. The driving circuit of the rotary motor and the driving circuit of the stepper motor 16 are connected to the controller, and the controller sets the start and stop time of the rotary motor and the stepper motor 16.

[0034] When the mixing device is used, the cover of the feed port 5 is opened and the auxiliary hopper is inserted into the feed port 5 , and food powder is put into the mixing container 2 through the auxiliary hopper. After the set amount is put in, the auxiliary hopper is taken out and the cover of the feed port 5 is closed. The controller controls the rotating motor to start, and the rotating motor drives the rotating disk 9 to rotate along an elliptical trajectory through the second rotating shaft 13, the connecting rod 12 and the first rotating shaft 11, and then drives the mixing container 2 and the screen 7 therein to rotate along an elliptical trajectory. The food powder on the screen 7 is relatively displaced and passes through the screen 7. When the food powder passes through all the screens 7 in the mixing container 2 and enters the collecting barrel 4, the controller controls the rotating motor to stop. The controller controls the stepper motor 16 to start, and the stepper motor 16 drives the third rotating shaft 15 to rotate 180° through the main gear 17 and the sub-gear 18, so that the mixing container 2 is turned over 180°. The controller controls the rotating motor to start again, and the food powder in the collecting barrel 4 passes through all the screens 7 rotating along an elliptical trajectory again. This reciprocating process allows the food powder to repeatedly pass through all the screens 7. When the set time is reached, the controller controls the rotating motor to stop, controls the stepper motor 16 to drive the mixing container 2 back to the center, places a receiving container under the discharge port 6, opens the lid on the discharge port 6, and releases the mixed food powder. The mixing barrel 3 is removed through the connecting piece, and the food powder remaining on the screen 7 in the mixing barrel 3 is cleaned. The mixing device can quickly mix food powder within 3L within 2-5 minutes, and the operation is convenient.

[0035] Verification of the mixing efficiency of the mixing device: Two portions of wheat flour were selected and marked as powder sample A and powder sample B respectively. The content of deoxynivalenol in powder sample A was 608.77 μg / kg, and the content of deoxynivalenol in powder sample B was 307.27 μg / kg. Weigh 20 small samples from each of the 2 powder samples, with 100 g of each small sample, and then mix them into 20 AB mixed samples in a ratio of 1:1. Take 10 portions of the AB mixed samples and mix them with the mixing device for 2min, 4min, 6min, 8min, 10min, 12min, 14min, 16min, 18min, and 20min. The mixing device has a rotation speed of 110r / min and is turned over once every 20 seconds. Take 10 portions of AB mixed samples and mix them with Bethlehem BLH-190K experimental powder mixer for 2min, 4min, 6min, 8min, 10min, 12min, 14min, 16min, 18min, and 20min at a rotation speed of 110r / min. The deoxynivalenol content in mixed powder samples was detected using the Cytecno QD Infinity series detector according to the "Colloidal Gold Rapid Test Card Method for Determination of Deoxynivalenol in Cereals for Grain and Oil Inspection" LS / T 6113-2015. Each mixed sample was tested in parallel for 3 times, and the average coefficient of variation of the detected deoxynivalenol content was ≤1% as the mixing standard (the average coefficient of variation of deoxynivalenol detected in each group of parallel samples = standard deviation ÷ 3). The detection values ​​and average coefficient of variation of deoxynivalenol in the AB mixed samples mixed by the two devices are shown in Tables 1 and Figure 8 .

[0036] Table 1 From Table 1 and Figure 8 It can be seen that the average coefficient of variation of deoxynivalenol can be reduced to about 1% by mixing it for about 8-9 minutes with the mixing device. The average coefficient of variation of deoxynivalenol can be reduced to about 1% by the existing Bethlehem BLH-190K experimental powder mixer for about 12 minutes, that is, to achieve the same mixing degree, the mixing time of the mixing device is about 3-4 minutes shorter than that of the Bethlehem BLH-190K experimental powder mixer.

[0037] In the mixing device, the food powder on the screen 7 has a porous structure and rotates in an elliptical trajectory, which greatly increases the probability of relative displacement of the food powder. The multiple screens 7 in the mixing container 2 increase the probability of relative displacement of the food powder by multiples. The flipping of the mixing container 2 enables the food powder to repeatedly pass through the multiple screens 7, further increasing the probability of relative displacement of the food powder. Compared with the existing food powder mixer, the mixing time required to achieve the same mixing uniformity is much shorter, the mixing uniformity is higher within the same mixing time, and the mixing efficiency is improved.

[0038] Embodiment 3 like Figure 7 As shown, a fast mixing device for food powder includes an existing three-dimensional mixer, which includes a mixing container and a driving mechanism that can make the mixing container perform three-dimensional gyratory motion. A feed port is provided at one end of the mixing container, and a discharge port is provided at the other opposite end. Two layers of screens are arranged in the mixing container, and the screens are perpendicular to the feed port. Food powder enters the mixing container from the feed port and falls on the screen. The screen performs a three-dimensional gyratory motion under the drive of the driving mechanism, so that the food powder repeatedly passes through the screen, and the mixed food powder is discharged from the discharge port. Due to the porous structure of the screen and the three-dimensional gyratory motion of the screen, the device greatly increases the probability of relative displacement of food powder. Compared with the existing food powder mixing device, the mixing time required to achieve the same mixing uniformity is much shorter, the mixing uniformity is higher within the same mixing time, and the mixing efficiency is improved.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A rapid mixing device for food powder, comprising a mixing container (2) capable of three-dimensional gyratory motion, a feed inlet (5) being provided at the upper end of the mixing container (2) and a discharge outlet (6) being provided at the lower end, characterized in that: More than one layer of screen (7) is provided in the mixing container (2).

2. The rapid mixing device for food powder according to claim 1, characterized in that: The mechanism for realizing the three-dimensional gyratory motion of the mixing container (2) comprises a rotating disk (9) driven by a driving mechanism (1), two supporting arms (14) arranged opposite to each other are arranged on the rotating disk (2), third rotating shafts (15) are respectively arranged vertically on opposite surfaces of the two supporting arms (14), the mixing container (2) is connected to the third rotating shaft (15), and a rotating mechanism is connected to the third rotating shaft (15).

3. The rapid mixing device for food powder according to claim 2, characterized in that: The driving mechanism (1) drives the rotating disk (9) to rotate along an elliptical trajectory.

4. The rapid mixing device for food powder according to claim 2 or 3, characterized in that: The driving mechanism (1) comprises a crank mechanism, wherein the crank mechanism is composed of a first rotating shaft (11), a connecting rod (12) and a second rotating shaft (13) connected to each other, wherein the first rotating shaft (11) is connected to the rotating disk (1), and the second rotating shaft (13) is connected to the rotating mechanism.

5. The rapid mixing device for food powder according to claim 2 or 3, characterized in that: The mixing container (2) comprises a conical feed barrel (19), a mixing barrel (3) and an inverted conical aggregate bucket (4); the feed barrel (19), the mixing barrel (3) and the aggregate bucket (4) are connected in sequence from top to bottom; a feed port (5) is arranged at the top of the feed barrel (19), and a discharge port (6) is arranged at the bottom of the aggregate bucket (4).

6. The rapid mixing device for food powder according to claim 1, characterized in that: The sieve (7) is multi-layered, and the multi-layer sieve (7) is arranged at intervals along the height direction of the mixing container (2).

7. The rapid mixing device for food powder according to claim 4, characterized in that: It also includes a base (8), and the rotating mechanism (1) is fixedly arranged on the base (8).

8. The rapid mixing device for food powder according to claim 4, characterized in that: There are multiple drive mechanisms (1), and the rotating mechanisms of the multiple drive mechanisms (1) are arranged at intervals in the circumferential direction below the rotating disk (9), and the connecting rods (12) of the multiple drive mechanisms (1) are oriented in the same direction.

9. The rapid mixing device for food powder according to claim 2, characterized in that: The lower middle of the rotating disc (9) is slidably arranged on the support column (10).

10. The rapid mixing device for food powder according to claim 4, characterized in that: It also includes a controller, which is electrically connected to the driving circuits of the rotating mechanism (14) and the rotation mechanism respectively.

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