Double stirring and uniform mixing device for modified starch

Abstract

The utility model discloses a modified starch dual stirring and blending device, and relates to the field of starch processing equipment, a fixed plate higher than a feed port is horizontally arranged in a reaction tank, a guide rail penetrating through the fixed plate is arranged on the fixed plate, the guide rail is distributed in a vortex shape, a motor is arranged on the edge of the upper surface of the fixed plate, and an output shaft of the motor is coupled with a driving gear; a driven gear ring is arranged above the fixing plate, a rotating column is arranged at the circle center of the fixing plate and fixedly connected with a limiting ring, the other end of the limiting ring is fixedly connected with the driven gear ring, a chemical adding pipe penetrates through the limiting ring and the guide rail, and the lower portion of the chemical adding pipe is fixedly connected with a stirring barrel. A gear is arranged at the position, flush with the guide rail, of the outer wall of the flow dividing pipe, and an arc-shaped rack is arranged on the inner side wall of the guide rail and meshed with the gear. The chemical adding pipe rotates and rotates along the guide rail, materials are evenly added into the reaction tank in a small amount and multiple times through the flow dividing pipe, and modified starch raw materials and chemicals are evenly mixed.

Description

Technical Field

[0001] The utility model relates to the field of starch processing equipment, in particular to a double stirring and mixing device for modified starch. Background Art

[0002] Modified starch refers to a starch derivative that is prepared by using physical, chemical and enzymatic methods to change the natural properties of starch, increase its performance or introduce new properties based on the inherent properties of starch in order to improve its performance and expand its application range. Some chemical components are added during the processing of modified starch, which can significantly improve the functional properties of starch, so that modified starch can better meet the relevant needs of industrial production. However, during the addition process, starch is mostly in a slurry state. Directly adding chemicals in a short period of time will cause uneven mixing of the modified starch raw materials, affecting the modified properties of the modified starch. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a double stirring and mixing device for modified starch, including a reaction tank, a feed port, a discharge port and a support leg, the feed port is arranged on the upper part of the reaction tank body, the discharge port and the support leg are both arranged at the bottom of the reaction tank, a fixed plate higher than the feed port is horizontally arranged inside the reaction tank, a guide rail is arranged on the fixed plate, the guide rail passes through the fixed plate and is distributed in a vortex shape, a motor is arranged on the edge of the upper surface of the fixed plate, a driving gear is connected to the output shaft of the motor, a driven gear ring is arranged above the fixed plate, the driving gear and the driven gear ring are meshed with each other, a rotating column is rotatably connected at the center of the fixed plate, a limiting ring is fixedly connected to the rotating column, the other end of the limiting ring is fixedly connected to the driven gear ring, a chemical addition pipe passes through the limiting ring and the guide rail, and a stirring drum is arranged at the lower part of the chemical addition pipe.

[0004] Furthermore, the upper part of the chemical addition tube is a hemispherical shell, and the lower part is a diversion tube. The interior of the hemispherical shell is hollow, and a adding port is opened on the top of the hemispherical shell. The bottom of the hemispherical shell is connected to the diversion tube. A block is provided at the bottom of the diversion tube. The block diameter is equal to the inner diameter of the diversion tube. The block is connected to the diversion tube through a first spring. The first spring connects the upper surface of the block to the inner wall of the diversion tube. The hemispherical shell is located above the limit ring, and the diversion tube passes through the limit ring and the guide rail.

[0005] Furthermore, the outer wall of the diversion pipe of the chemical addition pipe is fixedly connected to the mixing drum, the mixing drum is located below the limiting ring, and blades are arranged in an array along the length direction on the outer wall of the mixing drum.

[0006] Furthermore, a plurality of branch pipes are obliquely arranged on the wall of the diversion pipe in the mixing drum, and the branch pipes all penetrate the mixing drum and are connected to the chemical addition pipe and the reaction tank.

[0007] Furthermore, the structure of the limit ring is: the middle parts are parallel to each other, the two end parts are arc-shaped, the length direction of the limit ring is consistent with the radial direction of the fixed plate, the length of the limit ring is greater than the maximum radius of the guide rail, and the inner ring width of the limit ring is less than the diameter of the hemispherical shell.

[0008] Furthermore, a limiting ring is respectively arranged on the upper and lower sides of the fixed plate, the limiting ring located on the upper side of the fixed plate is connected to the rotating column and the driven gear ring, the limiting ring located on the lower side of the fixed plate is fixedly connected to the rotating column, a second spring is arranged in the limiting ring, the second spring is connected to the chemical addition tube and the inner wall of the limiting ring away from the rotating column, a radial bearing is arranged at the connection between the second spring and the chemical addition tube, the radial bearing is sleeved on the chemical addition tube, and the second spring is fixedly connected to the outer ring of the radial bearing.

[0009] Furthermore, a gear is provided on the portion of the diversion pipe that is flush with the guide rail, the gear takes the chemical addition pipe as an axis, and an arc-shaped rack is provided on the inner wall of the guide rail.

[0010] Furthermore, the radius of the driven gear ring is greater than the maximum radius of the guide rail, and the driven gear ring is connected to the fixed plate via a thrust bearing.

[0011] The beneficial effects of the embodiments of the present utility model are as follows:

[0012] The utility model discloses a double stirring and mixing device for modified starch. The chemical adding pipe moves along a guide rail in a reaction tank, and the chemical is slowly added into the tank through a branch pipe of the chemical adding pipe. The branch pipe moves in the tank along with the movement of the chemical adding pipe while adding the chemical, and is mixed with the modified starch raw material in various places in the reaction tank in small amounts and multiple times, so as to achieve a uniform addition effect. When the chemical adding pipe rotates along the guide rail, the chemical adding pipe rotates itself, driving the stirring drum to stir the modified starch raw material, and the chemical flows into the tank and is immediately stirred and mixed by the stirring drum. For the slurry-like modified starch raw material, the stirring drum changes its position for stirring, so that the modified starch raw material and the chemical are mixed more evenly, and the quality of the modified starch produced is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional view of a double stirring and mixing device for modified starch.

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the fixed plate.

[0015] Figure 3 It is a schematic diagram of the structure of part A of the double stirring and mixing device for modified starch.

[0016] Figure 4 It is a three-dimensional structural diagram of the chemical addition pipe.

[0017] Figure 5It is a cross-sectional view of the chemical addition pipe.

[0018] Figure 6 It is a structural diagram of the guide rail.

[0019] Figure numerals: 1. reaction tank, 2. feed port, 3. discharge port, 4. fixed plate, 5. guide rail, 501. arc rack, 6. driving gear, 7. driven gear, 8. rotating column, 9. limiting ring, 901. second spring, 902. radial bearing, 10. chemical addition tube, 1001. hemispherical shell, 1002. diverter tube, 1003. block, 1004. first spring, 1005. branch pipe, 1006. gear, 1007. addition port, 11. mixing drum, 1101. blade. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0021] The utility model provides a modified starch double stirring and mixing device, comprising a reaction tank 1, a feed inlet 2, a discharge outlet 3 and legs. Figure 1 The feed port 2 is arranged at the upper part of the tank body of the reaction tank 1, the discharge port 3 and the legs are arranged at the bottom of the reaction tank 1, and the feed port 2 and the discharge port 3 are both provided with valves.

[0022] A fixed plate 4 higher than the feed port 2 is horizontally arranged inside the reaction tank 1, and a guide rail 5 is arranged on the fixed plate 4, and the guide rail 5 passes through the fixed plate 4, and the guide rail 5 is distributed in a spiral shape. A motor (not shown) is arranged on the edge of the upper surface of the fixed plate 4, and a driving gear 6 is connected to the output shaft of the motor. A driven gear ring 7 is arranged above the fixed plate 4, and the driving gear 6 and the driven gear ring 7 are meshed with each other. The motor drives the driving gear 6 to rotate, and the driving gear 6 drives the driven gear ring 7 to rotate. The radius of the driven gear ring is greater than the maximum radius of the guide rail 5. The driven gear ring 7 is connected to the fixed plate 4 through a thrust bearing (not shown). The thrust bearing is arranged between the driven gear ring 7 and the fixed plate 4. The upper surface of the shaft ring of the thrust bearing is fixedly connected to the driven gear ring 7, and the lower surface of the seat ring of the thrust bearing is fixedly connected to the fixed plate 4. The thrust bearing is consistent in size with the driven gear ring 7, and the thrust bearing supports the driven gear ring 7 and facilitates the rotation of the driven gear ring 7.

[0023] See also Figure 1The fixed plate 4 is rotatably connected with a rotating column 8 at the center of the circle. The rotating column 8 is fixedly connected to a limiting ring 9. The other end of the limiting ring 9 is fixedly connected to the driven gear ring 7. The driven gear ring 7 rotates to drive the limiting ring 9 to rotate, and the rotating column 8 rotates together with the limiting ring 9. A limiting ring 9 is set on each of the upper and lower sides of the fixed plate 4. The limiting ring 9 on the upper side of the fixed plate 4 connects the rotating column 8 and the driven gear ring 7. The limiting ring 9 on the lower side of the fixed plate 4 is fixedly connected to the rotating column 8, and the other end is suspended in the air. The two limiting rings 9 rotate synchronously. Figure 2 The length direction of the limit ring 9 is consistent with the radial direction of the fixed plate 4. The structure of the limit ring 9 is: the middle part is parallel to each other, the two end parts are arc-shaped, and the length of the limit ring 9 is greater than the maximum radius of the guide rail 5.

[0024] A chemical addition pipe 10 is placed on the limiting ring 9, and the chemical addition pipe 10 passes through the two limiting rings 9 and the guide rail 5. The rotation of the limiting ring 9 can drive the chemical addition pipe 10 to rotate along the guide rail 5. Figure 4 The chemical addition pipe 10 has a hemispherical shell 1001 at the top and a shunt pipe 1002 at the bottom. The hemispherical shell 1001 is hollow inside and has an addition port 1007 at the top. The bottom of the hemispherical shell 1001 is connected to the shunt pipe 1002. Figure 5 A block 1003 is provided at the bottom of the shunt pipe 1002, and the diameter of the block 1003 is equal to the inner diameter of the shunt pipe 1002. The block 1003 is connected to the shunt pipe 1002 through a first spring 1004. One end of the first spring 1004 is connected to the upper surface of the block 1003, and the other end is connected to the inner wall of the shunt pipe 1002. The outside of the shunt pipe 1002 is connected to a mixing drum 11, and a plurality of branch pipes 1005 are obliquely arranged on the wall of the shunt pipe 1002 located in the mixing drum 11.

[0025] The hemispherical shell 1001 is located above the two limiting rings 9. The diameter of the hemispherical shell 1001 is larger than the inner ring width of the limiting rings 9. The hemispherical shell 1001 can move on the limiting rings 9 along the length direction of the limiting rings 9. The diverter pipe 1002 passes through the two limiting rings 9 and the guide rail 5. The branch pipes 1005 all pass through the mixing drum 11 and are connected to the chemical addition pipe 10 and the reaction tank 1.

[0026] Chemicals are loaded in the chemical addition tube 10. When the chemical addition tube 10 is stationary, the stopper 1003 is located directly below the chemical addition tube 10 under the action of the first spring 1004. Under the action of gravity, only a small amount of chemicals enters the reaction tank 1. The motor is started, the limit ring 9 rotates, and the chemical addition tube 10 moves along the guide rail 5. The first spring 1004 changes in length due to the centrifugal force, and the stopper 1003 shifts. At the same time, the chemicals in the branch pipe 1005 are thrown out of the chemical addition tube 10 due to the centrifugal force. The chemicals flow into the reaction tank 1 as the chemical addition tube 10 changes position, and are mixed with the modified starch raw materials at various locations in the reaction tank 1 in small amounts and multiple times.

[0027] See also Figure 4 The outer wall of the diversion pipe 1002 of the chemical addition pipe 10 is fixedly connected to the mixing drum 11, and the mixing drum 11 is located below the limiting ring 9. Blades 1101 are arranged in an array along the length direction on the outer wall of the mixing drum 11. After the chemical flows out of the chemical addition pipe 10, it is mixed with the modified starch raw material outside the mixing drum 11 through the rotation of the mixing drum 11.

[0028] See also Figure 3 A second spring 901 is arranged in each of the two limiting rings 9, and the second spring 901 connects the chemical addition tube 10 and the inner wall of the limiting ring 9 away from the rotating column 8. The second spring 901 is always in a compressed state. A radial bearing 902 is arranged at the connection between the second spring 901 and the chemical addition tube 10, and the radial bearing 902 is sleeved on the chemical addition tube 10. The radial bearing 902 is flush with the limiting ring 9, and the second spring 901 is fixedly connected to the outer ring of the radial bearing 902.

[0029] See also Figure 3 and Figure 6 , a gear 1006 is provided on the part of the diverter pipe 1002 flush with the guide rail 5, the gear 1006 takes the chemical addition pipe 10 as the axis, an arc-shaped rack 501 is provided on the inner wall of the guide rail 5, and the second spring 901 is used to squeeze the chemical addition pipe 10 so that the arc-shaped rack 501 and the gear 1006 are meshed with each other. The gear 1006 on the chemical addition pipe 10 is tightly meshed with the arc-shaped rack 501 of the guide rail 5 under the action of the second spring 901. When the chemical addition pipe 10 moves along the guide rail 5, the chemical addition pipe 10 will rotate, driving the mixing drum 11 to rotate, and stirring the modified starch raw material. When the chemical addition pipe 10 moves to the end of the guide rail 5, the length of the second spring 901 is compressed to the shortest, so that the arc-shaped rack 501 and the gear 1006 are tightly meshed but do not affect the rotation of the chemical addition pipe 10.

[0030] Working process: start the motor, the driving gear 6 drives the limiting ring 9 to rotate counterclockwise through the driven gear ring 7, the limiting ring 9 drives the chemical addition tube 10 to move along the guide rail 5, the chemical in the chemical addition tube 10 flows into the reaction tank 1 in small amounts and multiple times from the diversion tube 1002, the gear 1006 on the chemical addition tube 10 is meshed with the arc-shaped rack 501 of the guide rail 5, the chemical addition tube 10 moves along the guide rail 5 while the chemical addition tube 10 rotates, and the mixing drum 11 rotates to mix the modified starch raw material and the chemicals.

[0031] In the description of the present invention, it should be understood that the terms "length", "up", "down", "top", "bottom", "inside", "outside", etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A double stirring and mixing device for modified starch, characterized in that: It includes a reaction tank, a feed port, a discharge port and support legs, wherein the feed port is arranged on the upper part of the reaction tank body, the discharge port and the support legs are arranged at the bottom of the reaction tank, a fixed plate higher than the feed port is horizontally arranged inside the reaction tank, a guide rail is arranged on the fixed plate, the guide rail passes through the fixed plate and is distributed in a vortex shape, a motor is arranged on the edge of the upper surface of the fixed plate, a driving gear is connected to the output shaft of the motor, a driven gear ring is arranged above the fixed plate, the driving gear and the driven gear ring are meshed with each other, a rotating column is rotatably connected at the center of the fixed plate, a limiting ring is fixedly connected to the rotating column, the other end of the limiting ring is fixedly connected to the driven gear ring, a chemical addition pipe passes through the limiting ring and the guide rail, and a stirring drum is arranged at the lower part of the chemical addition pipe.

2. The modified starch double stirring and mixing device according to claim 1, characterized in that: The upper part of the chemical addition tube is a hemispherical shell, and the lower part is a diversion tube. The interior of the hemispherical shell is hollow and a adding port is provided on the top. The bottom of the hemispherical shell is connected to the diversion tube. A block is provided at the bottom of the diversion tube. The block diameter is equal to the inner diameter of the diversion tube. The block is connected to the diversion tube through a first spring. The first spring connects the upper surface of the block to the inner tube wall of the diversion tube. The hemispherical shell is located above the limiting ring, and the diversion tube passes through the limiting ring and the guide rail.

3. The modified starch double stirring and mixing device according to claim 2, characterized in that: The outer wall of the flow distribution pipe of the chemical addition pipe is fixedly connected to the mixing drum, the mixing drum is located below the limiting ring, and blades are arranged in a linear array along the length direction on the outer wall of the mixing drum.

4. The modified starch double stirring and mixing device according to claim 3, characterized in that: A plurality of branch pipes are obliquely arranged on the wall of the diversion pipe in the mixing drum, and the branch pipes all penetrate the mixing drum and are connected with the chemical addition pipe and the reaction tank.

5. The modified starch double stirring and mixing device according to claim 2, characterized in that: The structure of the limit ring is: the middle parts are parallel to each other, the two end parts are arc-shaped, the length direction of the limit ring is consistent with the radial direction of the fixed plate, the length of the limit ring is greater than the maximum radius of the guide rail, and the inner ring width of the limit ring is less than the diameter of the hemispherical shell.

6. The modified starch double stirring and mixing device according to claim 2, characterized in that: A limiting ring is respectively arranged on the upper and lower sides of the fixed plate, the limiting ring located on the upper side of the fixed plate is connected to the rotating column and the driven gear ring, the limiting ring located on the lower side of the fixed plate is fixedly connected to the rotating column, a second spring is arranged in the limiting ring, the second spring is connected to the chemical addition pipe and the inner wall of the limiting ring away from the rotating column, a radial bearing is arranged at the connection between the second spring and the chemical addition pipe, the radial bearing is sleeved on the chemical addition pipe, and the second spring is fixedly connected to the outer ring of the radial bearing.

7. The modified starch double stirring and mixing device according to claim 6, characterized in that: A gear is arranged on the portion of the diversion pipe flush with the guide rail, the gear takes the chemical addition pipe as an axis, and an arc-shaped rack is arranged on the inner side wall of the guide rail.

8. The modified starch double stirring and mixing device according to claim 1, characterized in that: The radius of the driven gear ring is greater than the maximum radius of the guide rail, and the driven gear ring is connected to the fixed plate through a thrust bearing.

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