Special anti-blocking screw conveyor for food-grade soybean protein powder

Abstract

The invention relates to the technical field of food processing, in particular to a special anti-blocking screw conveyor for food-grade soybean protein powder, which comprises a support, a pipeline is fixedly connected to the support, a discharge port is formed in the pipeline, the pipeline is fixedly connected and communicated with a storage hopper, an auger is rotatably arranged on the pipeline, a first driving unit is fixedly connected to the support, and a second driving unit is rotatably arranged on the first driving unit. The first driving unit is used for driving the auger to rotate, the storage hopper is rotationally provided with a rotating shaft, the rotating shaft and the auger are in transmission connection through a belt wheel and a belt, the rotating shaft is fixedly connected with a plurality of cylindrical rods, and all the cylindrical rods are located in the storage hopper. Soybean protein powder in the storage hopper is continuously stirred and crushed through rotation of the rotating shaft and the cylindrical rod, powder cakes formed by moisture absorption or compression are effectively scattered, and large materials are prevented from directly entering a pipeline, so that the bridging and blocking phenomena at an inlet of a guide pipe are prevented, and the flowability and conveying continuity of the materials are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of food processing, in particular to a special anti-blocking screw conveyor for food-grade soybean protein powder. Background Art

[0002] Food-grade soy protein powder is widely used in protein beverages, meal replacement foods, special medical formula foods and other products due to its high protein content, excellent emulsification and solubility. During the production process, it often needs to be transported in a closed and continuous manner between processes such as drying and crushing, mixing, and packaging through a screw conveyor. However, soy protein powder has strong hygroscopicity and adhesion. It is easily affected by the ambient humidity during storage or transportation and absorbs moisture, resulting in localized agglomeration or aggregation of the powder. In addition, during static storage, the powder will also undergo compaction and agglomeration under the continuous action of its own gravity and external pressure, further exacerbating the deterioration of the material's fluidity.

[0003] This type of agglomerated material is particularly problematic when it enters a conventional, general-purpose screw conveyor. Due to their large size, hard texture, and high viscosity, agglomerated particles are prone to becoming stuck in the narrow gap between the screw and the conveyor housing, hindering the screw's rotation. As the conveying process continues, unbroken agglomerates accumulate, gradually forming a "bridging" effect at the feed inlet or conveying section, reducing the material flow area or even completely blocking it. In severe cases, this can cause the screw to seize, the drive motor to overload, and the equipment to shut down. Summary of the Invention

[0004] In order to overcome the problems raised in the above background technology, the present invention provides a special anti-blocking screw conveyor for food-grade soy protein powder.

[0005] The technical solution of the present invention is: a special anti-blocking screw conveyor for food-grade soy protein powder, including a support, the support is fixedly connected to a pipeline, the pipeline is provided with a discharge port, the pipeline is fixedly connected to and connected to a storage hopper, the pipeline is rotatably provided with an auger, the support is fixedly connected to a first drive unit, the first drive unit is used to drive the auger to rotate, the storage hopper is rotatably provided with a rotating shaft, the rotating shaft and the auger are connected by a pulley and a belt drive, the rotating shaft is fixedly connected to a plurality of cylindrical rods, and all of the cylindrical rods are located in the storage hopper.

[0006] More preferably, the plurality of cylindrical rods are distributed in a spiral pattern on the rotating shaft.

[0007] More preferably, the auger is fixedly connected with a first spiral blade, the spiral direction of the first spiral blade is opposite to the spiral direction of the auger, and the first spiral blade is used to drive the material into the discharge port.

[0008] More preferably, it also includes a rotating shell, which is rotatably arranged on the pipe, and the support is fixed with a second driving unit, which is used to drive the rotating shell to rotate, and the rotating shell is fixed with a plurality of baffles distributed equidistantly in the circumferential direction, and all of the baffles are located on the outside of the auger.

[0009] More preferably, the output power of the first drive unit is different from the output power of the second drive unit, so as to generate a shear force between the baffle and the auger.

[0010] More preferably, a first rotating sleeve and a second rotating sleeve are fixed to the outer sides of all the baffles, and both the first rotating sleeve and the second rotating sleeve are located in the pipeline and rotate, and the first rotating sleeve is used to guide the material to turn over.

[0011] More preferably, a plurality of second spiral blades are fixedly connected between two adjacent baffles, all of the second spiral blades are located on the same spiral line, and the spiral direction of the second spiral blades is the same as the spiral direction of the auger.

[0012] More preferably, there is a gap between the second spiral blade and the auger.

[0013] More preferably, it also includes a fixed shell, which is fixedly connected to the storage hopper, and the fixed shell is slidably provided with a sliding push rod, and the fixed shell and the sliding push rod are both provided with circular holes, and the circular holes of the fixed shell and the sliding push rod are both fixedly connected with a one-way valve, the rotating shaft is fixedly connected to a turntable, the turntable is provided with a convex column, the sliding push rod is provided with a horizontal groove, the convex column of the turntable is located in the horizontal groove of the sliding push rod and slides, the pipeline is embedded with a conduit, and the conduit is fixedly connected to the fixed shell and connected to the fixed shell, the first rotating sleeve and the pipeline form an annular cavity connected to the conduit, the first rotating sleeve is provided with a plurality of exhaust holes equidistantly distributed circumferentially, and the exhaust hole is fixed with a one-way valve.

[0014] More preferably, the plurality of exhaust holes and the plurality of baffles are distributed in an alternating manner. Beneficial effects

[0015] 1. The present invention continuously stirs and crushes the soy protein powder in the storage hopper through the rotation of the rotating shaft and the cylindrical rod, effectively breaking up powder agglomerates formed by moisture absorption or pressure, preventing large pieces of material from directly entering the pipeline, thereby preventing bridging and blockage at the inlet of the pipeline, and significantly improving the fluidity and transportation continuity of the material; 2. Through the speed difference between the baffle and the auger, a controllable shear force is generated during the relative movement of the two, which performs secondary crushing on the agglomerated powder that still exists after entering the pipeline. This shear crusher is used in the middle section of the conveying process and cooperates with the front-end stirring structure to form a "pre-crushing + re-crushing" dual anti-blocking guarantee system to ensure the stability and continuity of material transportation; 3. Through the circumferential rotation of the first rotating sleeve and the baffle, the material in the pipeline is turned over and loosened, breaking the cohesion between powder particles and avoiding local compaction, effectively reducing the conveying resistance and alleviating the load of the main drive motor; 4. Through the reciprocating movement of the sliding push rod, compressed gas is continuously injected into the first rotating sleeve. The gas is evenly released in the gaps between the materials, reducing the cohesion between the particles and ensuring the continuous and stable flow of the material during the conveying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the pipeline and storage hopper of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the auger and the rotating shaft of the present invention.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the auger and the first rotating sleeve of the present invention.

[0020] Figure 5 It is an exploded view of the auger and the first rotating sleeve of the present invention.

[0021] Figure 6 It is a cross-sectional view of the pipeline and the first rotating sleeve of the present invention.

[0022] Figure 7 It is a cross-sectional view of the fixed shell and the conduit of the present invention.

[0023] In the accompanying drawings: 1-support, 2-pipeline, 201-discharge port, 3-storage hopper, 4-auger, 401-first spiral blade, 5-first drive unit, 6-rotating shaft, 7-cylindrical rod, 8-rotating shell, 9-second drive unit, 13-second spiral blade, 11-first rotating sleeve, 12-second rotating sleeve, 10-baffle, 14-fixed shell, 15-sliding push rod, 16-turntable, 17-conduit, 18-exhaust hole. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0025] Example 1: A special anti-blocking screw conveyor for food-grade soy protein powder, such as Figure 1-Figure 3 As shown, it includes a support 1, a control panel is installed on the support 1, a pipe 2 is fixed to the support 1 (the pipe 2 is in a horizontal state in the figure, and the pipe 2 can be adjusted to an inclined state if the material conveying height needs to be increased), a discharge port 201 is opened on the right side of the pipe 2, and the left part of the upper side of the pipe 2 is fixedly connected and connected to a storage hopper 3, an auger 4 is arranged to rotate in the pipe 2, and a first drive unit 5 is fixed to the support 1. The first drive unit 5 includes a motor, a gear box, a pulley and a belt. The motor is electrically connected to the control panel. The first drive unit 5 is used to drive the auger 4 to rotate, and the storage hopper 3 is provided with a rotary Shaft 6, the left part of the rotating shaft 6 and the left part of the auger 4 are connected by a pulley and a belt drive, and six cylindrical rods 7 are fixed to the side wall of the rotating shaft 6 (this number is the number expressed in the accompanying drawing, and the actual number can be adjusted accordingly according to demand), and all the cylindrical rods 7 are located in the storage hopper 3; the six cylindrical rods 7 are spirally distributed on the rotating shaft 6; the right part of the auger 4 is fixed with a first spiral blade 401, and the spiral direction of the first spiral blade 401 is opposite to the spiral direction of the auger 4. The first spiral blade 401 is used to drive the material into the discharge port 201 to reduce the material residue in the pipeline 2.

[0026] The working process of the anti-blocking screw conveyor for food-grade soy protein powder in this embodiment is as follows: Soy protein powder is stored in the storage hopper 3. If the soy protein powder needs to be transported, the operator starts the first drive unit 5 through the control panel. The first drive unit 5 drives the auger 4 and the first spiral blade 401 to rotate. The auger 4 rotates to drive the soy protein powder to move in the pipeline 2 until the soy protein powder is discharged from the discharge port 201 and falls into the corresponding container. The rotation of the first spiral blade 401 will drive the soy protein powder into the discharge port 201, reducing the residual soy protein powder in the pipeline 2.

[0027] During the process of conveying soy protein powder, the auger 4 rotates through the pulley and belt to drive the rotating shaft 6 and the cylindrical rod 7 to rotate. The rotation of the cylindrical rod 7 stirs and crushes the soy protein powder in the storage hopper 3, effectively breaking up the powder lumps formed by moisture absorption or pressure, and preventing large pieces of material from directly entering the pipeline 2, thereby ensuring the fluidity and conveying continuity of the soy protein powder material.

[0028] Example 2: Based on Example 1, Figure 2 、 Figure 4 and Figure 5 As shown, it also includes a rotating shell 8, which is rotatably arranged in the left part of the pipeline 2. The support 1 is fixed with a second drive unit 9, and the second drive unit 9 includes a motor, a gear box, a pulley and a belt. The motor is electrically connected to the control panel. The second drive unit 9 is used to drive the rotating shell 8 to rotate. The rotating shell 8 is fixed with six baffles 10 that are equidistantly distributed in the circumferential direction. All the baffles 10 are located on the outside of the auger 4; the output power of the first drive unit 5 is different from the output power of the second drive unit 9, and is used to generate shear force between the baffle 10 and the auger 4, wherein the output power of the first drive unit 5 and the output power of the second drive unit 9 can be adjusted accordingly through the control panel.

[0029] like Figure 2 and Figure 4-Figure 6 As shown, the outer sides of all baffles 10 are fixed with a first rotating sleeve 11 and a second rotating sleeve 12. The second rotating sleeve 12 is located on the right side of the first rotating sleeve 11, and the first rotating sleeve 11 and the second rotating sleeve 12 are both located in the pipeline 2 for sealed rotation. The first rotating sleeve 11 is used to guide the material to flip up and down to loosen the conveyed material. A plurality of second spiral blades 13 are fixed between two adjacent baffles 10. All the second spiral blades 13 are located on the same spiral line, and the spiral direction of the second spiral blades 13 is the same as the spiral direction of the auger 4. There is a gap between the second spiral blades 13 and the auger 4.

[0030] The working process of this embodiment is similar to that of the first embodiment and is described in detail as follows: During the process of conveying soy protein powder, the control panel starts the first drive unit 5 and the second drive unit 9, wherein the first drive unit 5 works to repeat the above operation to drive the auger 4 and the rotating shaft 6 to rotate, and the second drive unit 9 works to drive the rotating shell 8, the six baffles 10, the first rotating sleeve 11, the second rotating sleeve 12 and all the second spiral blades 13 to rotate. Since the conveying power of the first drive unit 5 and the second drive unit 9 is different, the rotation speeds of the auger 4 and the six baffles 10 are different. The relative rotation between the auger 4 and the six baffles 10 will shear and crush the soy protein powder to prevent the soy protein powder material from being blocked in the pipeline 2, further ensuring the fluidity and conveying continuity of the soy protein powder material.

[0031] During the conveying process, the first rotating sleeve 11 and the six baffles 10 rotate to flip the soybean protein powder material at the bottom thereof, so that the material below the first rotating sleeve 11 flips upward, and the second spiral blade 13 rotates to drive the soybean protein powder material. The flipping of the soybean protein powder material breaks the cohesion between the soybean protein powders, avoids local compaction, and effectively reduces the conveying resistance.

[0032] Example 3: Based on Example 2, Figure 2 and Figure 7 As shown, it also includes a fixed shell 14, which is fixed to the right side of the storage hopper 3. A sliding push rod 15 is slidingly provided on the upper part of the fixed shell 14. The fixed shell 14 and the sliding push rod 15 are both provided with four circular holes equidistantly distributed in the circumferential direction. A one-way valve is fixed in the four circular holes of the fixed shell 14 and the four circular holes of the sliding push rod 15. The one-way valve on the fixed shell 14 is used for gas to enter from the outside, and the one-way valve on the sliding push rod 15 is used for gas to flow from top to bottom. A turntable 16 is fixed to the right side of the rotating shaft 6. A convex column is provided on the right side of the turntable 16. A one-way valve is fixed in the upper part of the sliding push rod 15. There is a horizontal groove, the boss of the turntable 16 is located in the horizontal groove of the sliding push rod 15 and slides. A conduit 17 is embedded in the upper part of the pipe 2, and the conduit 17 is fixedly connected to and communicated with the lower part of the fixed shell 14. The first rotating sleeve 11 and the pipe 2 form five equally distributed annular cavities, and the conduits 17 are respectively communicated with the five annular cavities. The first rotating sleeve 11 is provided with five groups of exhaust holes 18, and the five groups of exhaust holes 18 are respectively located at the five annular cavities. The number of exhaust holes 18 in each group includes six circumferentially equally distributed holes, and a one-way valve is fixed in the exhaust hole 18; the multiple exhaust holes 18 are staggered with the multiple baffles 10.

[0033] The working process of this embodiment is similar to that of the second embodiment and is described in detail as follows: During the process of conveying soy protein powder, the rotating shaft 6 simultaneously drives the turntable 16 to rotate, and the rotation of the turntable 16 drives the sliding push rod 15 to move back and forth up and down in the fixed shell 14. Under the limiting action of the one-way valve on the fixed shell 14 and the one-way valve on the sliding push rod 15, the gas is injected into the conduit 17 step by step, and the gas accumulates in the annular cavity surrounded by the pipeline 2 and the first rotating sleeve 11. Then the high-pressure gas squeezes the one-way valve on the first rotating sleeve 11, allowing the gas to pass through the exhaust hole 18. The gas is evenly released in the gaps of the soy protein powder in the first rotating sleeve 11, reducing the cohesion between the material particles and ensuring the continuous and stable flow of the material during the conveying process.

[0034] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A special anti-blocking screw conveyor for food-grade soy protein powder, characterized in that: The invention comprises a support (1), wherein the support (1) is fixedly connected to a pipe (2), the pipe (2) is provided with a discharge port (201), the pipe (2) is fixedly connected to and communicated with a storage hopper (3), the pipe (2) is rotatably provided with an auger (4), the support (1) is fixedly connected to a first drive unit (5), the first drive unit (5) is used to drive the auger (4) to rotate, the storage hopper (3) is rotatably provided with a rotating shaft (6), the rotating shaft (6) and the auger (4) are connected via a pulley and a belt transmission, the rotating shaft (6) is fixedly connected to a plurality of cylindrical rods (7), and all the cylindrical rods (7) are located in the storage hopper (3).

2. The anti-blocking screw conveyor for food-grade soybean protein powder according to claim 1, characterized in that: The plurality of cylindrical rods (7) are distributed in a spiral manner on the rotating shaft (6).

3. The anti-blocking screw conveyor for food-grade soybean protein powder according to claim 1, characterized in that: The auger (4) is fixedly connected to a first spiral blade (401), the spiral direction of the first spiral blade (401) being opposite to the spiral direction of the auger (4), and the first spiral blade (401) is used to drive materials into the discharge port (201).

4. The anti-blocking screw conveyor for food-grade soybean protein powder according to claim 1, characterized in that: The invention also includes a rotating shell (8), wherein the rotating shell (8) is rotatably arranged on the pipe (2), the support (1) is fixedly connected to a second drive unit (9), and the second drive unit (9) is used to drive the rotating shell (8) to rotate, and the rotating shell (8) is fixedly connected to a plurality of baffles (10) distributed equidistantly in the circumferential direction, and all the baffles (10) are located outside the auger (4).

5. The anti-blocking screw conveyor for food-grade soybean protein powder according to claim 4, characterized in that: The output power of the first drive unit (5) is different from the output power of the second drive unit (9), and is used to generate a shear force between the baffle (10) and the auger (4).

6. The anti-blocking screw conveyor for food-grade soybean protein powder according to claim 4, characterized in that: A first rotating sleeve (11) and a second rotating sleeve (12) are fixedly connected to the outer sides of all the baffles (10), and the first rotating sleeve (11) and the second rotating sleeve (12) are both located in the pipe (2) and rotate, and the first rotating sleeve (11) is used to guide the material to turn over.

7. The anti-blocking screw conveyor for food-grade soybean protein powder according to claim 6, characterized in that: A plurality of second spiral blades (13) are fixedly connected between two adjacent baffles (10), all of the second spiral blades (13) are located on the same spiral line, and the spiral direction of the second spiral blades (13) is the same as the spiral direction of the auger (4).

8. The anti-blocking screw conveyor for food-grade soybean protein powder according to claim 7, characterized in that: There is a gap between the second spiral blade (13) and the auger (4).

9. The anti-blocking screw conveyor for food-grade soybean protein powder according to claim 6, characterized in that: The utility model further comprises a fixed shell (14), wherein the fixed shell (14) is fixedly connected to the storage hopper (3), and the fixed shell (14) is provided with a sliding push rod (15), and the fixed shell (14) and the sliding push rod (15) are both provided with circular holes, and a one-way valve is fixedly connected in the circular hole of the fixed shell (14) and the circular hole of the sliding push rod (15), and the rotating shaft (6) is fixedly connected with a rotating disk (16), and the rotating disk (16) is provided with a convex column, and the sliding push rod (15) is provided with a There is a horizontal groove, the convex column of the rotating disk (16) is located in the horizontal groove of the sliding push rod (15) and slides, the pipeline (2) is embedded with a conduit (17), the conduit (17) is fixedly connected to and communicated with the fixed shell (14), the first rotating sleeve (11) and the pipeline (2) form an annular cavity communicated with the conduit (17), the first rotating sleeve (11) is provided with a plurality of exhaust holes (18) distributed equidistantly in the circumference, and a one-way valve is fixed in the exhaust hole (18).

10. The anti-blocking screw conveyor for food-grade soybean protein powder according to claim 9, characterized in that: The plurality of exhaust holes (18) and the plurality of baffles (10) are distributed in a staggered manner.

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