Self-adaptive variable working condition centrifugal pump impeller

Abstract

The invention relates to the technical field of pump body impeller structures, in particular to a self-adaptive variable working condition centrifugal pump impeller which comprises a center shaft, a first blade, a second blade, a rotating block and an arc-shaped ring. One end of the first blade penetrates through the center shaft, a communicating groove is formed in the side surface of the center shaft, one section of side surface of the first blade is attached to the communicating groove, the side surface of the first blade is sleeved with a first bearing, one end of the first blade is fixedly connected with a rotating block, and a notch is formed in one side of the rotating block. And the inner wall of the notch is fixedly connected with a connecting shaft. According to the self-adaptive variable-working-condition centrifugal pump impeller, the number of the blades is controlled to be increased or decreased through fluid flow feedback to cooperatively change the angles of the blades, the impeller can be matched with the fluid motion state in different flow intervals, the problem that the efficiency of a traditional impeller is greatly reduced due to frequent changes of the working conditions is solved, and the impeller can adapt to various different working conditions; and efficient operation is maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of pump impeller structures, in particular to an adaptive variable working condition centrifugal pump impeller. Background Art

[0002] A centrifugal pump is a general-purpose machine that uses the centrifugal force generated by the rotation of an impeller to transport fluids (primarily liquids). It is widely used in industries such as industry, agriculture, municipal administration, and water conservancy, and is a core component of modern fluid transportation systems. Its operating principle and structural features enable it to efficiently and stably transport fluids from low-pressure areas to high-pressure areas, or to transport fluids over long distances.

[0003] When a centrifugal pump is working, the fluid flow rate changes with the working conditions. A fixed impeller is difficult to match the fluid motion state in different flow ranges. Frequent changes in working conditions lead to a significant drop in efficiency. It is difficult to adapt to various working conditions and cannot maintain efficient operation. Therefore, an adaptive variable working condition centrifugal pump impeller is proposed. Summary of the Invention

[0004] The present invention aims to provide an adaptive variable-operating-condition centrifugal pump impeller to address the aforementioned background art problem, in which the fluid flow rate of a centrifugal pump changes with the operating conditions during operation, making it difficult for a fixed impeller to match the fluid motion state in different flow ranges. Frequent changes in operating conditions lead to a significant decrease in efficiency, making it difficult to adapt to a variety of operating conditions and maintaining efficient operation. To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an adaptive variable-operating-condition centrifugal pump impeller comprising a central shaft, a first blade, a second blade, a rotating block, and an arcuate ring; a first blade, one end of the first blade passing through the central axis, a connecting groove being provided on the side surface of the central axis, a section of the side surface of the first blade being in contact with the connecting groove, a first bearing being sleeved on the side surface of the first blade, one end of the first blade being fixedly connected to a rotating block, a notch being provided on one side of the rotating block, a connecting shaft being fixedly connected to an inner wall of the notch, and a connecting column 1 being passed through one end of the connecting shaft; The second blade has a side surface of the central shaft having a movable groove 1, the side surface of the second blade being slidably connected to the movable groove 1, one end of the second blade being connected to a rotating block, a notch, a connecting shaft and a connecting column 1 identical to those of the first blade, the side surface of the second blade being sleeved with a second bearing, the side surface of the second bearing being fixedly connected to a connecting column 3, the connecting column 3 being provided in multiple groups, and the side surface of the connecting column 3 being fixedly connected to an arc-shaped ring; One end of the connecting column one is fixedly connected to a third bearing, and one side of the third bearing is provided with a hydraulic rod that drives the third bearing to move up and down, and one side of the connecting column three is fixedly connected to a rotating plate, and one side of the rotating plate is provided with a motor that drives the rotating plate to rotate, and the side surface of the central axis is sleeved with a rear cover plate. This adaptive variable working condition centrifugal pump impeller increases or decreases the number of blades through fluid flow feedback control and coordinates the change of blade angles, so that the impeller can match the fluid motion state in different flow ranges, reducing the problem of a significant decrease in efficiency of traditional impellers due to frequent changes in working conditions, and can adapt to a variety of different working conditions and maintain efficient operation.

[0005] Further preferably, a sliding groove is provided on the inner wall of the central shaft, the rotating plate is slidably connected to the sliding groove, and an arc groove is provided on one side of the rotating plate. In this type of adaptive variable operating condition centrifugal pump impeller, the arc groove facilitates the connecting column 1 connected to the second blade, which can move when the second blade moves.

[0006] Further preferably, the side surface of the connecting column 1 connected to the second blade is slidably connected to the inner wall of the arc groove, and the side surface of the connecting column 1 connected to the first blade is slidably connected to the inner wall of the arc groove. This adaptive variable operating condition centrifugal pump impeller facilitates the movement of the rotating plate and at the same time limits the connecting column 1 to prevent the connecting column 1 from moving too far, causing the first blade and the second blade to collide, resulting in damage to the device.

[0007] Further preferably, the inner wall of the central shaft is fixedly connected with a bearing plate, the motor is fixedly mounted on the bearing plate, and an output end of the motor is penetrated by a connecting block.

[0008] Further preferably, the side surface of the connecting block is fixedly connected to the third bearing, and the side surface of the third bearing is sleeved with a movable plate.

[0009] Further preferably, a second movable groove is opened on the inner wall of the central shaft, and the movable plate is movably connected to the second movable groove.

[0010] Further preferably, one side of the movable plate is fixedly connected to a pressure column, one end of the pressure column is fixedly connected to a pressure plate, one side of the pressure plate is fixedly connected to a hydraulic rod, one end of the hydraulic rod is fixedly connected to the inner wall of the central shaft. This adaptive variable operating condition centrifugal pump impeller can simultaneously rotate the first blade and the second blade through the pressure plate and the pressure column.

[0011] Further preferably, a connecting cover is fixedly installed on one side of the central axis, a connecting column 2 is fixedly connected to one side of the connecting cover, and a connecting cylinder is clamped on the side surface of the connecting column 2. In this type of adaptive variable operating condition centrifugal pump impeller, the connecting column 2 is clamped with the connecting cylinder to limit the position of the first bearing, thereby reducing movement. At the same time, when the first blade rotates and changes its angle, the first bearing is prevented from rotating, thereby improving the stability of the device.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the number of blades is increased or decreased through fluid flow feedback control to coordinately change the angle of the blades, so that the impeller can match the fluid movement state in different flow ranges, reducing the problem of a significant decrease in efficiency of traditional impellers caused by frequent changes in working conditions, and can adapt to a variety of different working conditions and maintain efficient operation.

[0013] In the present invention, the second connecting column is clamped with the connecting tube to limit the position of the first bearing, thereby reducing movement. At the same time, when the first blade rotates to change the angle, the first bearing is prevented from rotating, thereby improving the stability of the device. The arc groove facilitates the connection between the first connecting column and the second blade, so that it can move when the second blade moves, and facilitates the movement of the rotating plate. At the same time, the connection column is limited to prevent the connection column from moving too far, causing the first blade and the second blade to collide, resulting in damage to the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 Schematic diagram of the local structure of the present invention Figure 1 ; Figure 3 Schematic diagram of the local structure of the present invention Figure 2 ; Figure 4 This is a schematic diagram of the partial explosion structure of the present invention; Figure 5 This is an enlarged structural diagram of point A of the present invention; Figure 6 This is an enlarged structural diagram of point B of the present invention; Figure 7 This is an enlarged structural diagram of point C of the present invention.

[0015] In the figure: 1. Central axis; 2. Connecting cover; 3. Rear cover; 4. First blade; 5. Second blade; 6. Moving groove 1; 7. Connecting groove; 8. First bearing; 9. Second bearing; 10. Sliding groove; 11. Moving groove 2; 12. Rotating block; 13. Notch; 14. Connecting shaft; 15. Connecting column 1; 16. Connecting cylinder; 17. Connecting column 2; 18. Connecting column 3; 19. Arc ring; 20. Rotating plate; 21. Arc groove; 22. Moving plate; 23. Third bearing; 24. Connecting block; 25. Motor; 26. Load-bearing plate; 27. Pressure column; 28. Pressure plate; 29. ​​Hydraulic rod. DETAILED DESCRIPTION

[0016] 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.

[0017] See also Figure 1 - Figure 7 , the present invention provides a technical solution: an adaptive variable working condition centrifugal pump impeller, comprising a central shaft 1, a first blade 4, a second blade 5, a rotating block 12 and an arc ring 19; The first blade 4 has one end that passes through the central shaft 1. The first blade 4 is in an arc-shaped curved surface and is provided with a cylinder for connection at one end. A connecting groove 7 is provided on the side surface of the central shaft 1. The connecting groove 7 is used for the rotation of the first blade 4. A section of the side surface of the first blade 4 fits with the connecting groove 7. A first bearing 8 is sleeved on the side surface of the first blade 4. The first blade 4 rotates through the first bearing 8. One end of the first blade 4 is fixedly connected to a rotating block 12. A notch 13 is provided on one side of the rotating block 12. The inner wall of the notch 13 is fixedly connected to the rotating block 12. A connecting shaft 14 is connected, and one end of the connecting shaft 14 passes through a connecting column 15. The connecting column 15 rotates through the connecting shaft 14, and the connecting column 15 drives the rotating block 12 to rotate through the first bearing 8 and the second bearing 9. The inner wall of the central shaft 1 is provided with a sliding groove 10, and the rotating plate 20 is slidably connected to the sliding groove 10. An arc groove 21 is provided on one side of the rotating plate 20. The arc groove 21 facilitates the connection column 15 connected to the second blade 5, and can move when the second blade 5 moves. The first blade 4 is provided with four groups and is evenly distributed; The second blade 5, the side surface of the central axis 1 is provided with a moving groove 6, the second blade 5 is an arc-shaped curved surface and a cylinder for connection is provided at one end, the second blade 5 can be completely fitted with the second blade 5, the side surface of the second blade 5 is slidably connected to the moving groove 6, the connecting column three 18 enables the second blade 5 to slide in the moving groove 6 through the arc ring 19, one end of the second blade 5 is connected to the same rotating block 12, notch 13, connecting shaft 14 and connecting column one 15 as the first blade 4, the side surface of the second blade 5 is sleeved with a second bearing 9, the side surface of the second bearing 9 is fixedly connected to the connecting column three 18, the connecting column three 18 is provided with multiple groups, the side surface of the connecting column three 18 is fixedly connected to the arc ring 19, the second blade 5 is provided with four groups, and they are evenly distributed; The side surface of the connecting column 15 connected to the second blade 5 is slidably connected to the inner wall of the arc groove 21, and the side surface of the connecting column 15 connected to the first blade 4 is slidably connected to the inner wall of the arc groove 21. The arc groove 21 facilitates the movement of the rotating plate 20 and at the same time limits the connecting column 15 to prevent the connecting column 15 from moving too far, causing the first blade 4 and the second blade 5 to collide, resulting in damage to the device. One end of the connecting column 15 is fixedly connected to the third bearing 23, and one side of the third bearing 23 is provided with a hydraulic rod 29 that drives the third bearing 23 to move up and down. One side of the connecting column 3 18 is fixedly connected to the rotating plate 20, and one side of the rotating plate 20 is provided with a motor 25 that drives the rotating plate 20 to rotate. The inner wall of the central shaft 1 is fixedly connected to the supporting plate 26, and the motor 25 is fixedly mounted on the supporting plate 26. The output end of the motor 25 is penetrated by a connecting block 24, and the side surface of the central shaft 1 is sleeved with the rear cover plate 3.

[0018] In this embodiment, Figure 1 、 Figure 4 、 Figure 5 and Figure 7 As shown, the inner wall of the central shaft 1 is fixedly connected with a bearing plate 26, and the motor 25 is fixedly installed on the bearing plate 26. The output end of the motor 25 is penetrated by a connecting block 24, and the side surface of the connecting block 24 is fixedly connected to the third bearing 23. The side surface of the third bearing 23 is sleeved with a movable plate 22, and the movable plate 22 drives the connecting column 15 to move. The inner wall of the central shaft 1 is provided with a movable groove 21, and the movable plate 22 is movably connected to the movable groove 21. One side of the movable plate 22 is fixedly connected with a pressure column 27, and one end of the pressure column 27 is fixedly connected with a pressure plate 28. The pressure plate 28 drives the pressure column 27 to move, and one side of the pressure plate 28 is fixedly connected with a hydraulic rod 29. The first blade 4 and the second blade 5 can be rotated at the same time through the pressure plate 28 and the pressure column 27. One end of the hydraulic rod 29 is fixedly connected to the inner wall of the central shaft 1.

[0019] In this embodiment, Figure 1 、 Figure 2 and Figure 5As shown, a connecting cover 2 is fixedly installed on one side of the central axis 1, and a connecting column 2 17 is fixedly connected to one side of the connecting cover 2. The side surface of the connecting column 2 17 is clamped with a connecting tube 16. The connecting column 2 17 is clamped with the connecting tube 16 to limit the position of the first bearing 8 and reduce movement. At the same time, when the first blade 4 rotates to change the angle, it prevents the first bearing 8 from rotating.

[0020] The use method and advantages of the present invention: When the self-adaptive variable working condition centrifugal pump impeller is used, the working process is as follows: like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, when the centrifugal pump is working, the flow detection valve installed at the inlet and outlet of the centrifugal pump monitors the fluid flow. According to the size of the fluid flow, the change of the number and angle of the impeller blades is controlled by the external PLC control panel. When the fluid flow is large, the hydraulic rod is activated to move the pressure plate 28, and the pressure plate 28 drives the pressure column 27 to move, and then drives the moving plate 22 to slide in the moving groove 11. The moving plate 22 drives the connecting column 15 to move, and the connecting column 15 drives the rotating block 12 to rotate through the first bearing 8 and the second bearing 9, so that the first blade 4 and the second blade 5 rotate, and then adjust the angle of the blade to adapt to the working conditions of fluids with different viscosities. When the fluid flow rate is small, by starting the motor, the rotating plate 20 is driven to rotate through the sliding groove 10, and the rotating plate 20 drives the connecting column three 18 to rotate. The connecting column three 18 makes the second blade 5 slide in the moving groove 1 6 through the arc ring 19, and fits with the first blade 4, reducing the number of blades. At the same time, the angle of the blade can be changed according to the requirements of the working conditions. The device increases or decreases the number of blades through fluid flow feedback control and coordinates the change of the blade angle, so that the impeller can match the fluid movement state in different flow ranges, reducing the problem of a significant decrease in the efficiency of traditional impellers caused by frequent changes in working conditions, and can adapt to a variety of different working conditions and maintain efficient operation.

[0021] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit 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 present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An adaptive variable working condition centrifugal pump impeller, characterized in that: It comprises a central shaft (1), a first blade (4), a second blade (5), a rotating block (12) and an arc-shaped ring (19); A first blade (4), one end of the first blade (4) passes through the central shaft (1), a connecting groove (7) is provided on the side surface of the central shaft (1), a section of the side surface of the first blade (4) is in contact with the connecting groove (7), a first bearing (8) is sleeved on the side surface of the first blade (4), one end of the first blade (4) is fixedly connected to a rotating block (12), a notch (13) is provided on one side of the rotating block (12), a connecting shaft (14) is fixedly connected to the inner wall of the notch (13), and a connecting column (15) is passed through one end of the connecting shaft (14); A second blade (5), wherein a movable groove (6) is provided on the side surface of the central shaft (1), and the side surface of the second blade (5) is slidably connected to the movable groove (6). One end of the second blade (5) is connected to a rotating block (12), a notch (13), a connecting shaft (14) and a connecting column (15) which are the same as those of the first blade (4). A second bearing (9) is sleeved on the side surface of the second blade (5), and a connecting column (18) is fixedly connected to the side surface of the second bearing (9). The connecting column (18) is provided in multiple groups, and an arc ring (19) is fixedly connected to the side surface of the connecting column (18); One end of the connecting column 1 (15) is fixedly connected to a third bearing (23), and one side of the third bearing (23) is provided with a hydraulic rod (29) for driving the third bearing (23) to move up and down. One side of the connecting column 3 (18) is fixedly connected to a rotating plate (20), and one side of the rotating plate (20) is provided with a motor (25) for driving the rotating plate (20) to rotate. The side surface of the central shaft (1) is sleeved with a rear cover plate (3).

2. The adaptive variable working condition centrifugal pump impeller according to claim 1, characterized in that: A sliding groove (10) is provided on the inner wall of the central shaft (1), the rotating plate (20) is slidably connected to the sliding groove (10), and an arc-shaped groove (21) is provided on one side of the rotating plate (20).

3. The adaptive variable working condition centrifugal pump impeller according to claim 2, characterized in that: The side surface of the connecting column 1 (15) connected to the second blade (5) is slidably connected to the inner wall of the arc groove (21), and the side surface of the connecting column 1 (15) connected to the first blade (4) is slidably connected to the inner wall of the arc groove (21).

4. The adaptive variable working condition centrifugal pump impeller according to claim 1, characterized in that: The inner wall of the central shaft (1) is fixedly connected to a bearing plate (26), the motor (25) is fixedly mounted on the bearing plate (26), and the output end of the motor (25) is penetrated by a connecting block (24).

5. The adaptive variable working condition centrifugal pump impeller according to claim 4, characterized in that: The side surface of the connecting block (24) is fixedly connected to the third bearing (23), and the side surface of the third bearing (23) is sleeved with a movable plate (22).

6. The adaptive variable working condition centrifugal pump impeller according to claim 5, characterized in that: The inner wall of the central shaft (1) is provided with a second movable groove (11), and the movable plate (22) is movably connected to the second movable groove (11).

7. The adaptive variable working condition centrifugal pump impeller according to claim 6, characterized in that: One side of the movable plate (22) is fixedly connected to a pressure column (27), one end of the pressure column (27) is fixedly connected to a pressure plate (28), one side of the pressure plate (28) is fixedly connected to a hydraulic rod (29), and one end of the hydraulic rod (29) is fixedly connected to the inner wall of the central shaft (1).

8. The adaptive variable working condition centrifugal pump impeller according to claim 1, characterized in that: A connecting cover (2) is fixedly mounted on one side of the central shaft (1), a second connecting column (17) is fixedly connected to one side of the connecting cover (2), and a connecting cylinder (16) is clamped on the side surface of the second connecting column (17).

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