Linear motion impeller

Abstract

The present application relates to the technical field of biogas manufacturing stirring, in particular to a linear motion stirring paddle, the stirring paddle comprises a rotating disc, a rotating column, a stirring ring and a lifting driving assembly, and has the beneficial effects that: through the cooperation of the stirring ring and the main rib plate, and through the setting of the lifting driving assembly, periodic reciprocating motion in the axial direction is realized, the axial and radial material mixing of the tank body can be well completed, one anaerobic fermentation tank is equipped with one linear stirring paddle, and the inner wall of the anaerobic tank does not need to be provided with a baffle, so that good material mixing effect can be achieved; at the same time, the surface crust phenomenon of the fermentation material can be well solved, the amount of fermentation material sediment at the bottom of the tank is significantly reduced, the material mixing efficiency of the biogas tank is improved, the structure is simple, and the manufacturing cost is significantly reduced.

Description

Technical Field

[0001] This invention relates to the field of biogas production mixing technology, specifically a linear motion mixing impeller. Background Technology

[0002] In the anaerobic fermentation process, the mixing effect of materials directly affects the biogas yield. The structure of the stirring paddle in the anaerobic tank is related to the mixing effect. Generally, anaerobic tanks are equipped with multiple layers of stirring paddles and baffles are set on the inner wall of the fermentation tank to achieve a better mixing effect.

[0003] Furthermore, during anaerobic fermentation, some fermentation products often float to the surface and form a crust on the liquid surface. Over time, this crust hardens and hinders the upward movement of fermentation gases. The stirring paddles typically equipped with fermentation tanks cannot effectively solve the problem of breaking the crust. In addition, fermentation products often settle at the bottom of the tank directly below the stirring paddle blades, reducing the mixing effect of the fermentation tank and resulting in low biogas production efficiency. Generally, stirring paddles have a complex structure and high manufacturing costs. Summary of the Invention

[0004] The purpose of this invention is to provide a linear motion stirring paddle to solve the problem of efficient stirring in anaerobic fermentation.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A linear motion stirring impeller, the impeller comprising:

[0007] A turntable, on which a pair of columns are symmetrically and vertically arranged, and racks are vertically arranged on the outer wall of the columns;

[0008] A rotating column is fixed to the lower end of a turntable, and six sets of main stiffening plates arranged in a circular array are installed on the outer circumference of the rotating column.

[0009] A stirring ring is located at the lower end of a rotating column, and the main stiffening plate is fixedly installed at the lower end of the stirring ring.

[0010] A lifting drive assembly includes a drive shaft driven by a drive motor. A half-tooth drive ring and a drive gear are fixedly sleeved at both ends of the drive shaft. A half-tooth drive ring that meshes with a rack is provided on the half-tooth drive ring. A driven gear is laterally connected to the half-tooth drive ring. A reset gear is provided directly above the half-tooth drive ring. The reset gear and the driven gear are connected by a drive belt.

[0011] Preferably, the inner cavity of the stirring ring is provided with an inner ring, and the upper end surface of the stirring ring is provided with six sets of mounting seats arranged in a circumferential array. The mounting seats are provided with slots through them, and the lower end of the main stiffener is provided with a T-shaped insert, which is inserted into the slot.

[0012] Preferably, the upper end of the mounting base has multiple sets of linearly distributed mounting holes symmetrically arranged on both sides, and the insert has through holes corresponding to the mounting holes. The mounting holes and through holes are fastened together by screws.

[0013] Preferably, the outer arc wall of the rotating column is provided with six sets of insert plates arranged in a circular array, and the insert plates are provided with fixing holes. The end of the main stiffener plate is provided with a positioning groove, which is inserted into the outer wall of the insert plate. The positioning groove and the insert plate are fixedly connected by fixing bolts inserted into the fixing holes.

[0014] Preferably, the semi-toothed ring is fixed on the outer wall of the semi-toothed drive ring. The semi-toothed ring is a semi-circular toothed ring that meshes with the rack. A gap is left between the other half of the semi-toothed drive ring and the rack.

[0015] Preferably, a connecting rod is vertically arranged in the middle of the lower end face of the turntable, and the lower end of the connecting rod is fixedly connected to the upper end of the rotating column through a connecting flange.

[0016] Preferably, the lower end of the rotating column is provided with a limiting base plate, the insert plate is located at the upper end of the limiting base plate, and the lower end of the main stiffening plate is pressed against the upper end surface of the limiting base plate.

[0017] Preferably, a connecting shaft is vertically arranged at the upper end of the turntable, and a stirring drive assembly is connected to the outside of the connecting shaft. A pair of side strips are arranged in a circumferential array on the outer wall of the connecting shaft, and the connecting shaft is slidably inserted into the drive assembly through the side strips.

[0018] Preferably, the semi-tooth drive ring is laterally meshed with the driven gear at the same height, the rotating shaft of the driven gear is connected to the rotating shaft of the reset gear via a transmission belt, and the reset gear meshes with the upper end of the rack.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention, through the cooperation of a stirring ring and a main stiffening plate, and the use of a lifting drive assembly to achieve periodic reciprocating motion in the axial direction, can effectively mix materials in both the axial and radial directions of the tank. One linear stirring paddle is sufficient for each anaerobic digester, and baffles are not required on the inner wall of the anaerobic digester to achieve good material mixing. At the same time, it can effectively solve the problem of crusting on the surface of the fermentation material, significantly reduce the amount of fermentation material sediment at the bottom of the tank, improve the material mixing efficiency of the biogas digester, and has a simple structure with significantly reduced manufacturing costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the stirring ring of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the main stiffening plate of the present invention;

[0023] Figure 3 This is a schematic diagram of the installation of the three-dimensional structure of the semi-tooth drive ring of the present invention;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the rotating column of the present invention;

[0025] Figure 5 This is a schematic diagram of the installation structure of the lifting drive assembly of the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of the stirring ring installation of the present invention;

[0027] Figure 7 This is a three-dimensional structural diagram of the connection between the stirring assembly and the lifting drive assembly of the present invention.

[0028] In the diagram: 1. Stirring ring; 2. Mounting base; 3. Mounting hole; 4. Slot; 5. Inner ring; 6. Main stiffening plate; 7. Insert strip; 8. Fixing bolt; 9. Positioning groove; 10. Half-tooth drive ring; 11. Transmission gear; 12. Drive motor; 13. Half-tooth ring; 14. Transmission shaft; 15. Rotating column; 16. Connecting flange; 17. Limiting base plate; 18. Fixing hole; 19. Insert plate; 20. Connecting rod; 21. Connecting shaft; 22. Side strip; 23. Turntable; 24. Column; 25. Rack; 26. Driven gear; 27. Transmission belt; 28. Return gear. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1 to 7 The present invention provides a technical solution:

[0031] Example 1:

[0032] A linear motion stirring impeller, the impeller including a turntable 23, a rotating column 15, a stirring ring 1 and a lifting drive assembly.

[0033] The rotating column 15 is fixed at the lower end of the turntable 23. Six sets of main stiffening plates 6 are arranged in a circular array on the outer circumference of the rotating column 15. The stirring ring 1 is located at the lower end of the rotating column 15, and the main stiffening plates 6 are fixedly installed at the lower end of the stirring ring 1.

[0034] The vertical flow generated on the stirring ring 1 causes the fluid to impact the upper liquid surface and the bottom of the tank, forming vortices with the stirring ring 1 as the dividing line. The vortices continuously expand, forming two types of annular flows in the radial direction, one above and one below. During the intermittent movement of the stirring device, the two types of annular flows cross and mix at the disk, allowing the fluid in the lower annular flow to enter the upper annular flow. The turbulent characteristics of the disk structure enhance the turbulent effect of the material flow and improve the material mixing efficiency.

[0035] A pair of columns 24 are symmetrically and vertically arranged on the turntable 23. A rack 25 is vertically arranged on the outer wall of the column 24. The lifting drive assembly includes a drive shaft 14 driven by a drive motor 12. A half-tooth drive ring 10 and a drive gear 11 are respectively fixedly sleeved at both ends of the drive shaft 14. A half-tooth drive ring 13 that meshes with the rack 25 is provided on the half-tooth drive ring 10. A driven gear 26 is horizontally connected to the half-tooth drive ring 10. A reset gear 28 is provided directly above the half-tooth drive ring 10. The reset gear 28 and the driven gear 26 are connected by a transmission belt 27.

[0036] The drive motor 12 drives the semi-tooth drive ring 10 to rotate, so that the semi-tooth ring 13 meshes with the rack 25, thereby realizing the upward drive of the stirring ring 1.

[0037] When the half-tooth drive ring 10 rotates to the other half circle, it separates from the rack 25. The half-tooth ring 13 meshes with the driven gear 26, causing the driven gear 26 and the half-tooth ring 13 to rotate in opposite directions. Under the transmission of the transmission belt 27, the reset gear 28 meshes with the rack 25 and moves in the opposite direction, realizing the drive of the device to descend. This cycle repeats, forming a lifting and lowering reciprocating motion.

[0038] Example 2:

[0039] Based on Embodiment 1, in order to achieve the positioning and installation of the main stiffening plate 6, an inner ring 5 is provided in the inner cavity of the stirring ring 1, six sets of mounting seats 2 arranged in a circumferential array are provided on the upper end surface of the stirring ring 1, a slot 4 is provided through the mounting seat 2, and a T-shaped insert 7 is provided at the lower end of the main stiffening plate 6, which is inserted into the slot 4.

[0040] By interlocking the insert 7 with the slot 4, the main stiffener 6 is positioned and installed with the stirring ring 1, which improves the installation accuracy of the main stiffener 6. By setting the inner ring 5, the high-speed vertical upward and downward impact flow generated in the inner ring 5 increases the discharge volume of the fermenter. The upward impact flow has a good shell breaking effect, and the downward impact flow can reduce particulate matter deposition, which is beneficial to the overall material mixing in the anaerobic tank.

[0041] Example 3:

[0042] Based on Example 2, in order to achieve convenient fixed installation of the main stiffening plate 6, it also has the following features:

[0043] Multiple sets of mounting holes 3 are symmetrically arranged linearly on both sides of the upper end of the mounting base 2. The insert 7 is provided with through holes corresponding to the mounting holes 3. The mounting holes 3 and the through holes are fastened together by screws.

[0044] The main stiffener plate 6 is fixedly installed at one end through the mounting hole 3.

[0045] Example 4:

[0046] Based on embodiment 3, in order to achieve precise positioning and installation of the other end of the main stiffening plate 6, six sets of insert plates 19 arranged in a circular array are provided on the arc outer wall of the rotating column 15. Fixing holes 18 are provided through the insert plates 19. The end of the main stiffening plate 6 is provided with a positioning groove 9. The positioning groove 9 is inserted into the outer wall of the insert plate 19. The positioning groove 9 and the insert plate 19 are fixedly connected by fixing bolts 8 inserted into the fixing holes 18. A limiting base plate 17 is provided at the lower end of the rotating column 15. The insert plate 19 is located at the upper end of the limiting base plate 17. The lower end of the main stiffening plate 6 is pressed against the upper end surface of the limiting base plate 17.

[0047] By setting the positioning groove 9 and the insertion plate 19, the other end of the main stiffening plate 6 is positioned and inserted. The fixing bolt 8 is used to fix the installation, and the limiting base plate 17 is used to support the main stiffening plate 6.

[0048] Example 5:

[0049] Based on Embodiment 1, in order to realize the lifting transmission connection, a semi-toothed ring 13 is fixed on the outer wall of the semi-toothed drive ring 10. The semi-toothed ring 13 is a semi-circular ring-shaped toothed ring. The semi-toothed ring 13 is meshed with the rack 25. The other half of the semi-toothed drive ring 10 is left with a gap between it and the rack 25. A connecting rod 20 is vertically arranged in the middle of the lower end face of the turntable 23. The lower end of the connecting rod 20 is fixedly connected to the upper end of the rotating column 15 through a connecting flange 16. A connecting shaft 21 is vertically arranged at the upper end of the turntable 23. The connecting shaft 21 is externally connected to the stirring drive assembly. A pair of side strips 22 are arranged in a circumferential array on the outer wall of the connecting shaft 21. The connecting shaft 21 is slidably inserted into the drive assembly through the side strips 22. The semi-toothed drive ring 10 is meshed with the driven gear 26 in a transverse and equal-height manner. The rotating shaft of the driven gear 26 is connected to the rotating shaft of the reset gear 28 through a transmission belt 27. The reset gear 28 is meshed with the upper end of the rack 25.

[0050] The stirring is driven by the connecting rod 20 and the connecting shaft 21. The connecting shaft 21 is positioned and sleeved with the drive component by the side strip 22 to avoid relative rotation, so as to realize the lifting and rotating stirring of the turntable 23 on the drive device.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A linear motion impeller, characterized by: The stirring paddle comprises: A rotating disc (23) vertically provided with a pair of columns (24) symmetrically, and a rack (25) vertically provided on the outer wall of the column (24); A rotating column (15) fixed at the lower end of the rotating disc (23), and six groups of main rib plates (6) circumferentially arranged on the circumferential outer wall of the rotating column (15); A stirring circular ring (1) located at the lower end of the rotating column (15), and the main rib plates (6) fixedly installed at the lower end of the stirring circular ring (1); A lifting driving assembly comprising a transmission shaft (14) driven by a driving motor (12), and a half-tooth driving ring (10) and a transmission gear (11) fixedly sleeved at both ends of the transmission shaft (14), wherein the half-tooth driving ring (10) is provided with a half-tooth ring (13) engaged with the rack (25), and a reset gear (28) is arranged vertically above the half-tooth driving ring (10). The half-tooth ring (13) is fixed on the outer wall of the half-tooth driving ring (10), and the half-tooth ring (13) is a half-circular ring-shaped gear ring, and the other half of the half-tooth driving ring (10) leaves a gap with the rack (25); the half-tooth driving ring (10) is transversely and equally engaged with the driven gear (26), the rotating shaft of the driven gear (26) is connected with the rotating shaft of the reset gear (28) through a transmission belt (27), and the reset gear (28) is engaged with the upper end of the rack (25).

2. A linear motion paddle according to claim 1, wherein: The inner cavity of the stirring circular ring (1) is provided with an inner ring (5), the upper end surface of the stirring circular ring (1) is provided with six groups of mounting seats (2) circumferentially arranged, the mounting seat (2) is provided with a insertion slot (4) penetrating therethrough, the lower end of the main rib plate (6) is provided with a T-shaped insertion strip (7), and the insertion strip (7) is inserted into the insertion slot (4).

3. A linear motion paddle according to claim 2, wherein: The upper end of the mounting seat (2) is provided with a plurality of groups of mounting holes (3) linearly distributed symmetrically on both sides, the insertion strip (7) is provided with a through hole corresponding to the mounting hole (3), and the mounting hole (3) and the through hole are fastened and connected through screws.

4. A linear motion paddle according to claim 3, wherein: The circular arc outer wall of the rotating column (15) is provided with six groups of insertion plates (19) circumferentially arranged, the insertion plate (19) is provided with a fixing hole (18) penetrating therethrough, the end of the main rib plate (6) is provided with a positioning groove (9), the positioning groove (9) is inserted into the outer wall of the insertion plate (19), and the positioning groove (9) and the insertion plate (19) are fixedly connected through a fixing bolt (8) inserted into the fixing hole (18).

5. A linear motion paddle according to claim 1, wherein: The lower end of the rotating disc (23) is vertically provided with a connecting rod (20) in the middle, and the lower end of the connecting rod (20) and the upper end of the rotating column (15) are fixedly connected through a connecting flange plate (16).

6. A linear motion paddle according to claim 4, wherein: The lower end of the rotating column (15) is provided with a limiting bottom plate (17), the insertion plate (19) is located at the upper end of the limiting bottom plate (17), and the lower end of the main rib plate (6) is pressed on the upper end surface of the limiting bottom plate (17).

7. A linear motion paddle according to claim 5, wherein: The upper end of the rotating disc (23) is vertically provided with a connecting shaft (21), the connecting shaft (21) is externally connected with a stirring driving assembly, the outer wall of the connecting shaft (21) is provided with a pair of side strips (22) distributed in a circumferential array, and the connecting shaft (21) is slidably inserted on the driving assembly through the side strips (22).

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