A reverse submersible propeller mixer screw blade

Abstract

The present application belongs to the technical field of submersible push flow mixer, especially relates to a turnover submersible push flow mixer spiral blade, which comprises a rotating column head and multiple fan blades, the multiple fan blades are equidistantly arranged on the side surface of the rotating column head, a plurality of rotating welding grooves are arranged on the rear end surface of the rotating column head, a cavity is arranged in the rotating column head, a plurality of first motors are fixedly connected in the cavity, the multiple fan blades are one-to-one corresponding to the multiple first motors, the driving shaft of the first motor is coaxially fixedly connected with a connecting shaft, the connecting shaft penetrates through the rotating column head and is fixedly connected with the corresponding fan blade, a snap ring is arranged on the side surface of the rotating column head, notches are arranged on the two side edges of the bottom of the fan blade, a piece block integrated with the fan blade is arranged in the notch, a plurality of first hydraulic rods are embedded in the piece block, and the piece block is movably clamped with the snap ring. The present application can adjust the angle and area of the blade, so as to adapt to the rotating power of the motor and the application scene.

Description

Technical Field

[0001] This invention belongs to the technical field of submersible jet mixers, and in particular relates to a spiral blade for a tilting submersible jet mixer. Background Technology

[0002] Submersible jet mixers are widely used in wastewater treatment in the environmental protection field. They are suitable for use in wastewater treatment plant processes to propel and mix wastewater containing suspended solids, thin slurry, industrial process liquids, etc., to create water flow, enhance mixing function, and prevent sludge sedimentation. There are many types of submersible jet mixers, and their main structure generally uses large blades driven by a motor to rotate, thereby achieving the mixing effect.

[0003] The blades of submersible jet mixers currently adopt a fixed welded or flanged structure, with two or more large-area fan blades fixed to the rotating head to form a mixing force. The advantage of this method is that the cost is low and the processing technology is relatively easy, so it can be widely used. However, the disadvantages are also very obvious. The main reason is that the fixed blades have a fixed curvature and propulsion area. Changing the propulsion efficiency can only be done by adjusting the motor power. Therefore, the energy consumption and efficiency are not well matched. At the same time, the design of large blades and low number of blades is also prone to generating a lot of noise.

[0004] To address this issue, we propose a method for reversing the helical blades of a submersible mixer. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a tilting submersible impeller blade that allows for targeted adjustment of the blade angle and area.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rotating submersible mixer spiral blade, comprising a rotating head and multiple fan blades, wherein the multiple fan blades are equidistantly arranged on the side of the rotating head, and multiple rotating welding grooves are provided on the rear end face of the rotating head. The rotating head has a cavity inside, and multiple first motors are fixedly connected in the cavity. The multiple first motors are arranged one-to-one with the multiple fan blades. The drive shaft of the first motor is coaxially fixedly connected to a connecting shaft, which passes through the rotating head and is fixedly connected to the corresponding fan blade. A retaining ring is provided on the side of the rotating head, and notches are provided on both sides of the bottom of the fan blade. A piece integral with the fan blade is provided in the notch, and multiple first hydraulic rods are embedded inside the piece. The piece is movably engaged with the retaining ring.

[0007] In the aforementioned submersible jet mixer's spiral blades, the number of blades is even, and they are arranged symmetrically in pairs.

[0008] In the aforementioned rotating submersible jet mixer's spiral blades, the retaining ring is circular and located around the outside of the blades. The inner side of the retaining ring is provided with multiple first retaining grooves, and the plate is movably engaged with the multiple first retaining grooves.

[0009] In the aforementioned submersible jet mixer's spiral blades, the blades have multiple grooves inside. A first hydraulic rod is placed in the groove for storage. One end of the first hydraulic rod is fixedly connected to the blade notch, and the other end is fixedly connected to the inner wall of the groove.

[0010] In the aforementioned rotating submersible jet mixer spiral blade, the fan blade is divided into a front section and a rear section. The rear section has a sandwich layer, and a middle section is matched in the sandwich layer. Multiple second hydraulic rods are fixedly connected to the bottom of the middle section. One end of the second hydraulic rod is fixedly connected to the bottom of the sandwich layer. The front part of the middle section is fixedly connected to the rear part of the front section.

[0011] In the aforementioned rotating submersible jet mixer's spiral blades, the curvature of the middle section blade shape is consistent with the overall curvature of the fan blade.

[0012] In the aforementioned submersible jet mixer's spiral blades, the end face of the middle section is provided with multiple stabilizing grooves, and the inner wall of the interlayer is provided with protrusions for matching the stabilizing grooves.

[0013] In the aforementioned rotating submersible jet mixer's spiral blades, the outer fixed cover of the rotating column head is provided with a protective casing, the protective casing is provided with multiple storage slots, the storage slots are connected at one end near the fan blade, and a steering structure is provided on the rear section.

[0014] In the aforementioned reversible submersible mixer's spiral blades, the steering structure includes a second motor fitted onto the rear section. The rear section is broken into two segments. The drive shaft of the second motor is fixedly connected to one end of the rear section near the front section. The port of the rear section is provided with a mating interface and a top groove. Multiple third hydraulic rods are fixedly connected in the top groove. The ends of the third hydraulic rods are fixedly connected with locking teeth for engaging the mating interface.

[0015] In the aforementioned rotating submersible mixer's spiral blades, the bending length of the blades is less than the length of the receiving trough.

[0016] Compared with existing technologies, the advantages of the helical blades of this tilting submersible mixer are:

[0017] 1. The present invention, through the cooperation of a first motor, a retaining ring, a plate, and a first slot, enables the fan blade to rotate at a specified angle by driving the first motor, thereby changing the fan blade propulsion efficiency to match the power of the drive motor. At the same time, after the angle is adjusted, the fan blade is fixed by the locking action of the plate and the first slot on the retaining ring, thereby protecting the first motor and stabilizing the overall structure of the fan blade.

[0018] 2. This invention, through the combination of a front section, a rear section, a middle section, a protective casing, and a storage groove, utilizes the extension and contraction effects of the front, rear, and middle sections to simultaneously change the force-bearing area while the fan blades change angle, thereby achieving the effect of matching different operating environments. In addition, the storage groove on the protective casing allows for the folding and storage of the fan blades, thus achieving better protection and minimizing energy consumption under extremely low demand conditions. Attached Figure Description

[0019] Figure 1 This is a front structural schematic diagram of Embodiment 1 of the helical blade of a submersible mixer provided by the present invention;

[0020] Figure 2 yes Figure 1 A schematic diagram of the rear structure;

[0021] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0022] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle fan blade;

[0023] Figure 5 yes Figure 1 Schematic diagram of the internal cross section of the rotating column head;

[0024] Figure 6 This is a front structural schematic diagram of Embodiment 2 of the spiral blade of a submersible mixer provided by the present invention;

[0025] Figure 7 yes Figure 6 A diagram of the back of the building;

[0026] Figure 8 yes Figure 6 A schematic diagram showing the connection between the front, back, and middle sections;

[0027] Figure 9 yes Figure 6 Perspective view of the middle fan blade;

[0028] Figure 10This is a schematic diagram of the structure of an embodiment 3 of a reversible submersible jet mixer provided by the present invention;

[0029] Figure 11 yes Figure 10 Schematic diagram of the structure of the middle fan blade;

[0030] Figure 12 yes Figure 10 Perspective view of the steering structure.

[0031] In the diagram, 1 is the rotating column head, 2 is the fan blade, 3 is the rotating welding groove, 4 is the first motor, 5 is the connecting shaft, 6 is the retaining ring, 7 is the first retaining groove, 8 is the plate, 9 is the first hydraulic rod, 10 is the front section, 11 is the rear section, 12 is the middle section, 13 is the second hydraulic rod, 14 is the stabilizing groove, 15 is the protective shell, 16 is the storage groove, 17 is the steering structure, 18 is the second motor, 19 is the interface, 20 is the third hydraulic rod, and 21 is the retaining tooth. Detailed Implementation

[0032] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0033] Example 1

[0034] Submersible jet mixers are widely used in wastewater treatment in the environmental protection field. They are suitable for use in wastewater treatment plant processes to propel and mix wastewater containing suspended solids, thin slurry, industrial process liquids, etc., to create water flow, enhance mixing function, and prevent sludge sedimentation. There are many types of submersible jet mixers, and their main structure generally uses large blades driven by a motor to rotate, thereby achieving the mixing effect.

[0035] Submersible jet mixers currently employ fixed welded or flanged blades, with two or more large-area blades fixed to a rotating head to generate mixing force. This method is advantageous due to its low cost and relatively simple manufacturing process, allowing for widespread application. However, its drawbacks are also significant. The fixed blades have a fixed curvature and propulsion area, meaning that changing the propulsion efficiency can only be achieved by adjusting the motor power. Therefore, the balance between energy consumption and efficiency is low. Furthermore, the large blades and low number of blades in the design can easily generate considerable noise. Figure 1 As shown in the figure, this design is a rotating submersible jet mixer with a spiral blade, including a rotating column head 1 and multiple fan blades 2. In addition, the drive motor, housing, support and other components of the submersible jet mixer are all normally connected to it (not shown in the figure).

[0036] Unlike the conventional layout where blades are integrated into a small end for rotation, multiple fan blades 2 are equidistantly arranged on the side of the rotating head 1. The rotating head 1 replaces the traditional small end for connection and fixation. Multiple rotating welding grooves 3 are provided on the rear end face of the rotating head 1. The rotating welding grooves 3 are used to weld and fix the rotating head 1 to the drive shaft of the drive motor equipped with the submersible jet mixer, thereby enabling it to rotate.

[0037] like Figure 5 As shown, because the traditional fan blade 2 is fixed, it cannot be adjusted once it is manufactured. In this solution, a cavity is provided inside the rotating head 1, and multiple first motors 4 are fixedly connected inside the cavity. The multiple first motors 4 are fixedly connected to each other inside the cavity to form an integrated structure for maintaining stability. The orientation of each first motor 4 is evenly arranged. The multiple first motors 4 are fixedly connected to the inside of the cavity. The multiple first motors 4 are set one-to-one with multiple fan blades 2. Therefore, a single first motor 4 corresponds to a single fan blade 2, controlling the deflection of the fan blade 2. In order to ensure the adjustability of the fan blade 2, the number of fan blades 2 is even, and they are symmetrically arranged in pairs to balance the mutual forces. The optimal combination of this solution is a 4-blade structure. The drive shaft of the first motor 4 is coaxially fixedly connected to a connecting shaft 5. The connecting shaft 5 passes through the rotating head 1 and is fixedly connected to the corresponding fan blade 2. Through the connecting shaft 5, the first motor 4 controls the fan blade 2 to rotate.

[0038] To ensure the stability of the fan blade 2 during rotation, the middle part of the connecting shaft 5 is raised and flat. The raised part is fitted into the interior of the rotating column head 1 and is rotatably connected to each other. A sealing ring is also installed on the connecting shaft 5 for sealing. The centrifugal force received by the fan blade 2 connected to the connecting shaft 5 during rotation is effectively limited by the middle protrusion of the connecting shaft 5 to prevent the fan blade 2 from loosening or deviating.

[0039] like Figure 2-3 As shown, since the first motor 4 can only perform deflection operations and does not have a stabilizing or fixing effect, the fan blade 2 will still be deflected by the force of the water flow after the first motor 4 operates. Therefore, in this design, a retaining ring 6 is provided on the side of the rotating column head 1. The retaining ring 6 is annular. At the same time, notches are provided on both sides of the bottom edge of the fan blade 2. The notches are filled by a piece 8 integral with the fan blade 2. Multiple first hydraulic rods 9 are embedded inside the piece 8 to drive the movement of the piece 8, so that the piece 8 moves within the notch under the action of the first hydraulic rods 9. The piece 8 is movably engaged with the retaining ring 6. The retaining ring 6 is annular and is located around the outside of the fan blade 2. The retaining ring 6 corresponds one-to-one with the fan blade 2. Multiple first slots 7 are provided on the inner side of the retaining ring 6. The first slots 7 are as follows: Figure 3As shown, the densely arranged and equidistantly positioned pieces 8 are movably engaged with multiple first slots 7. Through the action of the first hydraulic rod 9, the pieces 8 extend outward to engage with the corresponding first slots 7. After engagement, the deflection angle of the fan blades 2 is fixed, thereby achieving the effect of fixing the deflection of the fan blades 2 and preventing damage to the first motor 4 under stress.

[0040] like Figure 4 As shown, the inside of the plate 8 has multiple grooves, and the first hydraulic rod 9 is set in the groove for storage, thus allowing the first hydraulic rod 9 to be placed in a confined space. One end of the first hydraulic rod 9 is fixedly connected to the notch of the fan blade 2, and the other end is fixedly connected to the inner wall of the groove. Under the action of the first hydraulic rod 9, the plate 8 can extend and retract. When it is necessary to rotate the angle of the fan blade 2, the first hydraulic rod 9 controls the plate 8 to retract and disengage from the retaining ring 6. After the angle of the fan blade 2 has been rotated, the first hydraulic rod 9 controls the plate 8 to extend and re-engage with the retaining ring 6, thereby maintaining the fixed effect. Therefore, the fan blade 2 can be rotated at a specified angle by using the drive of the first motor 4, thereby achieving the effect of changing the propulsion efficiency of the fan blade 2 to match the power of the drive motor. At the same time, after the angle adjustment is completed, the fan blade 2 is fixed by the engagement of the plate 8 and the first slot 7 on the retaining ring 6, thereby achieving the effect of protecting the first motor 4 and stabilizing the overall structure of the fan blade 2.

[0041] Example 2

[0042] Since the dimensions of traditional fan blade 2 are completely fixed after processing and will not change, simply changing the angle of fan blade 2 cannot fully achieve the desired effect. The submersible mixer reaches its limit after achieving the optimal angle. Therefore, referring to... Figure 6-9 The original integrated fan blade 2 is divided into a front section 10 and a rear section 11. The front section 10 and the rear section 11 can be separated from each other. After the front section 10 and the rear section 11 are separated, the overall area of ​​the fan blade 2 can be extended, thereby achieving the function of controlling the propulsion effect.

[0043] Specifically: A sandwich layer is provided in the rear section 11, and a middle section 12 is matched in the sandwich layer. The middle section 12 is housed in the sandwich layer. The curvature of the blade shape of the middle section 12 is consistent with the overall curvature of the fan blade 2 to maintain the overall propulsion effect. In order to control the movement of the middle section 12, multiple second hydraulic rods 13 are fixedly connected to the bottom of the middle section 12. One end of the second hydraulic rod 13 is fixedly connected to the bottom of the sandwich layer. Therefore, after the second hydraulic rod 13 pushes, the middle section 12 and the rear section 11 are pushed out. The propulsion distance of the second hydraulic rod 13 is controlled according to the required effect, thereby controlling the area of ​​the middle section 12.

[0044] To stably control the extension and retraction of the middle section 12, the front part of the middle section 12 is fixedly connected to the rear part of the front section 10. Multiple stabilizing grooves 14 are provided on the end face of the middle section 12, and protrusions for matching the stabilizing grooves 14 are provided on the inner wall of the interlayer. The overall stability is maintained by the interlocking of multiple stabilizing grooves 14 and protrusions. Through experiments and data calculations, the middle section 12, when fully extended, occupies 1 / 4 of the original blade area of ​​the fan blade 2. The total area of ​​the 6 fan blades 2 increases by 3 / 2, effectively increasing the overall thrust of the fan blade 2. This allows for better mixing in the mixing tank and prevents sludge sedimentation. Since the area and curvature angle of the fan blade 2 can be adjusted, the phenomenon of normal distribution caused by increasing power when large thrust is required by traditional blades is effectively improved. This delays the point at which the force decreases when the power reaches its limit, thus achieving relative high efficiency and energy saving.

[0045] Example 3

[0046] Because some wastewater treatment ponds do not always require handling large flow rates throughout the year, and traditional blades have a fixed number of blades, fewer blades result in less force, failing to perform their intended function under high loads. Conversely, more blades cannot generate sufficient force during low-power operation, leading to a lower energy-to-efficiency conversion ratio. Therefore, [the following is a separate, unrelated point:] ...refer to... Figure 10-12 The rotating column head 1 is also fixedly covered with a protective shell 15. The surface of the protective shell 15 is provided with multiple storage slots 16. The storage slots 16 are rectangular and are open at one end near the fan blade 2 so that the fan blade 2 can be stored in the storage slot 16 after bending.

[0047] The bending length of the fan blade 2 is less than the length of the storage slot 16. Furthermore, to enable the fan blade 2 to bend, a steering structure 17 is provided on the rear section 11. The steering structure 17 includes a second motor 18 fitted onto the rear section 11. The rear section 11 is broken into two segments; one segment continues to maintain its rotating position, while the other segment is stored in the storage slot 16. The drive shaft of the second motor 18 is fixedly connected to the end of the rear section 11 near the front section 10. The port of the rear section 11 is provided with a connecting interface 19 and a top slot. Multiple third hydraulic rods 20 are fixedly connected within the top slot. The ends of the third hydraulic rods 20... The head is fixedly connected with a locking tooth 21 for engaging the interface 19. The locking tooth 21 and the interface 19 are opened and closed by the force of the third hydraulic rod 20. When the locking tooth 21 and the interface 19 are disengaged, the second motor 18 drives a portion of the rear section 11 to bend into the storage slot 16. This allows the fan blade 2 to maintain a certain thrust under certain energy consumption, while also protecting the stored part from impact. All the fan blades 2 can be stored in the storage slot 16, reducing inconvenience during transportation and protecting the components when not in use.

[0048] Although this document frequently uses terms such as rotating column head 1, fan blade 2, rotating welding groove 3, first motor 4, connecting shaft 5, retaining ring 6, first retaining groove 7, piece 8, first hydraulic rod 9, front section 10, rear section 11, middle section 12, second hydraulic rod 13, stabilizing groove 14, protective casing 15, storage groove 16, steering structure 17, second motor 18, docking interface 19, third hydraulic rod 20, and retaining tooth 21, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A spiral blade for a tilting submersible mixer, characterized in that, The device includes a rotating head (1) and multiple fan blades (2). The multiple fan blades (2) are equidistantly arranged on the side of the rotating head (1). The rear end face of the rotating head (1) is provided with multiple rotating welding grooves (3). The interior of the rotating head (1) is provided with a cavity. Multiple first motors (4) are fixedly connected in the cavity. The multiple first motors (4) are arranged one-to-one with the multiple fan blades (2). The drive shaft of the first motor (4) is coaxially fixedly connected with a connecting shaft (5). The connecting shaft (5) passes through the rotating head (1) and is fixedly connected to the corresponding fan blade (2). The side of the rotating head (1) is provided with a retaining ring (6). The retaining ring (6) is circular and surrounds the fan blade (2). The inner side of the retaining ring (6) is provided with multiple first retaining grooves (7). The piece (8) is movably engaged with the multiple first retaining grooves (7). The bottom of the fan blade (2) has notches on both sides. The notches contain a piece (8) integral with the fan blade (2). Multiple first hydraulic rods (9) are embedded inside the piece (8). The piece (8) is movably engaged with the retaining ring (6). The piece (8) has multiple grooves inside. The first hydraulic rods (9) are placed in the grooves for storage. One end of the first hydraulic rod (9) is engaged with the notch of the fan blade (2). The fan blade (2) is fixedly connected at one end and fixedly connected at the other end to the inner wall of the groove. The fan blade (2) is divided into a front section (10) and a rear section (11). The rear section (11) is provided with a sandwich layer. A middle section (12) is matched in the sandwich layer. Multiple second hydraulic rods (13) are fixedly connected to the bottom of the middle section (12). One end of the second hydraulic rod (13) is fixedly connected to the bottom of the sandwich layer. The front part of the middle section (12) is fixedly connected to the rear part of the front section (10). The rotating column head (1) is fixedly covered with a protective shell (15). Multiple storage slots (16) are provided on the protective shell (15). 16) One end near the fan blade (2) is through, and a steering structure (17) is provided on the rear section (11). The steering structure (17) includes a second motor (18) fitted into the rear section (11). The rear section (11) is broken into two sections. The drive shaft of the second motor (18) is fixedly connected to one end of the rear section (11) near the front section (10). The port of the rear section (11) is provided with a docking interface (19) and a top groove. Multiple third hydraulic rods (20) are fixedly connected in the top groove. The end of the third hydraulic rod (20) is fixedly connected with a locking tooth (21) for locking the docking interface (19).

2. The helical blade of the submersible mixer according to claim 1, characterized in that, The number of fan blades (2) is even, and they are arranged symmetrically in pairs.

3. The helical blade of the submersible mixer according to claim 1, characterized in that, The curvature of the blade shape in the middle section (12) is consistent with the overall curvature of the fan blade (2).

4. The helical blade of the submersible mixer according to claim 1, characterized in that, Multiple stabilizing grooves (14) are provided on the end face of the middle section (12), and protrusions for matching the stabilizing grooves (14) are provided on the inner wall of the interlayer.

5. The helical blade of the submersible mixer according to claim 1, characterized in that, The bending length of the fan blade (2) is less than the length of the storage groove (16).

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