Energy-saving mixed flow pump

Abstract

The application discloses a kind of energy-saving mixed-flow pump related to mixed-flow pump technical field.It is including: pump body, the pump body is fixedly connected and is communicated with liquid inlet pipe, the pump body is fixedly connected with support seat on the side away from the liquid inlet pipe, the support seat rotationally connects with transmission shaft, the transmission shaft passes through the pump body and is fixedly connected with connecting seat, the connecting seat is fixedly connected with the circumferentially even distribution of several guide vanes, all the guide vanes are jointly fixedly connected with connecting cylinder;Mounting seat is rotationally connected in the connecting seat, the mounting seat rotationally connects with the circumferentially even distribution of several rotating members, and the rotating member is fixedly connected with adjusting piece.The inclination angle of the adjusting piece is changed to change the size of radial force that adjusting piece exerts on fluid in the pump body when rotating in the circumferential direction, and then the size of centrifugal force in the pump body is changed, thereby realizing independent adjustment of flow and lift, and then improving the energy utilization rate and working efficiency of mixed-flow pump.

Description

Technical Field

[0001] This invention relates to the field of mixed-flow pump technology, and in particular to an energy-saving mixed-flow pump. Background Technology

[0002] Mixed-flow pumps, as fluid machinery combining the characteristics of centrifugal and axial-flow pumps, employ a spatially twisted impeller structure as their core working component. When the impeller rotates circumferentially, the fluid medium is simultaneously subjected to the combined effects of radial centrifugal force and axial thrust. The radial centrifugal force primarily affects the pump's head characteristics, while the axial thrust affects its flow characteristics. In practical applications, the flow rate and head can be simultaneously adjusted by changing the pump's output power. However, in practical engineering applications such as river drainage, mixed-flow pumps require a large flow rate but a low head. In such cases, although the target flow rate can be achieved by controlling the output power, the centrifugal force generated during operation exceeds the actual required centrifugal force, resulting in excessive centrifugal force, low energy utilization, and wasted electrical resources, leading to low operating efficiency of the mixed-flow pump. Summary of the Invention

[0003] This invention provides an energy-saving mixed-flow pump to overcome the shortcomings of existing mixed-flow pumps, which can only adjust the flow rate and head synchronously, resulting in low energy utilization and low working efficiency of the mixed-flow pump in actual use.

[0004] Technical solution: An energy-saving mixed-flow pump, comprising:

[0005] The pump body is provided with a drain port. The pump body is fixedly connected to and connected to an inlet pipe. A support base is fixedly connected to the side of the pump body away from the inlet pipe. A drive shaft is rotatably connected to the support base. The drive shaft passes through the pump body and is fixedly connected to a connecting seat. Several guide vanes are fixedly connected to the connecting seat in a circumferentially evenly distributed manner. All the guide vanes are fixedly connected to a connecting cylinder.

[0006] Mounting base, rotatably connected to the connecting base, both the connecting base and the mounting base are located in the pump body, the mounting base is rotatably connected to a plurality of circumferentially evenly distributed rotating parts, and the rotating parts are fixedly connected to adjusting plates;

[0007] A power assembly, mounted on the pump body, is used to control the tilt angle of all the adjusting plates.

[0008] Furthermore, the power assembly includes:

[0009] An electric push rod is fixedly connected to the pump body, and a connecting piece is fixedly connected to the telescopic end of the electric push rod;

[0010] A transmission cylinder is splinedly connected to the transmission shaft and rotatably connected to the connecting member. The transmission cylinder passes through the pump body and is sealed and slidably connected to it. The transmission cylinder is sealed and slidably connected to the mounting base. A transmission bar is fixedly connected to the transmission cylinder. A guide groove is provided in the mounting base, and the transmission bar slides in the guide groove.

[0011] A bevel gear ring is fixedly connected to the side of the connecting seat near the mounting seat, and the rotating member is fixedly connected to a bevel gear that meshes with the bevel gear ring.

[0012] Furthermore, it also includes:

[0013] A number of locking members, equal to the number of the adjusting plates, are fixedly connected to the side of the adjacent adjusting plates near the mounting base. The locking members are slidably connected to the mounting base. Multiple locking blocks are slidably connected inside the mounting base. A tension spring is fixedly connected between the locking blocks and the mounting base. The locking blocks are provided with multiple locking grooves, which are used to limit the adjacent locking members.

[0014] Furthermore, the ratio of the number of locking blocks to the number of locking elements is greater than or equal to two, and each locking element corresponds to more than one locking block.

[0015] Furthermore, it also includes:

[0016] The compensation ring is slidably connected to the pump body, and the two together form a compensation chamber. All the adjusting plates are located between the compensation ring and the inlet pipe.

[0017] Furthermore, the rotation axis of the rotating component is located on the side adjacent to the adjusting plate near the connecting seat.

[0018] Furthermore, the pump body is fixedly connected to a power component, and the two together form a power chamber. The pump body is provided with a through hole that connects the power chamber and the compensation chamber. An installation component is slidably connected inside the power component. The installation component is fixedly connected to the connecting component. An annular airbag is fixedly connected to the installation component.

[0019] Furthermore, the inner diameter of the power chamber gradually increases in the direction from the support base to the inlet pipe.

[0020] Furthermore, it also includes:

[0021] The follower cylinder is fixed to the mounting component and is slidably connected to the power component. The follower cylinder and the power component together form an air supply chamber. The follower cylinder and the mounting component are provided with a flow channel that connects the air supply chamber to the annular airbag.

[0022] Furthermore, it also includes:

[0023] A sealing ring is fixed to the side of the annular airbag away from its central axis. The sealing ring is fixed with a plurality of symmetrically distributed limiting plates. The limiting plates are slidably connected to the mounting component and are used to limit the shape of the annular airbag.

[0024] The beneficial effects of the above technical solution are as follows: This invention changes the tilt angle of the regulating plate to alter the magnitude of the radial force exerted on the fluid within the pump body during circumferential rotation, thereby changing the magnitude of the centrifugal force within the pump body. This achieves independent adjustment of flow rate and head, thus improving the energy utilization and working efficiency of the mixed-flow pump. The locking block limits adjacent locking components, dispersing the force on the regulating plate, improving its stability, and extending its service life. The compensation ring follows the movement of the regulating plate, keeping the gap between the regulating plate and the compensation ring constant, thus maintaining the efficiency of the regulating plate in guiding the fluid flow within the pump body during circumferential rotation. The follower cylinder follows the movement of the mounting component and compresses the air supply chamber to inject air into the annular airbag, maintaining stable air pressure within the annular airbag and thus maintaining the sealing effect between the mounting component and the power chamber. The limiting plate restricts the shape of the annular airbag, ensuring the annular airbag and the mounting component remain stable in the axial position, improving transmission accuracy. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a three-dimensional structural diagram of the connecting cylinder, adjusting plate, and connecting member of the present invention;

[0027] Figure 3 This is a three-dimensional structural diagram of the connecting seat, guide vane, and connecting cylinder of the present invention;

[0028] Figure 4 This is a three-dimensional structural diagram of the mounting base, rotating component, and adjusting plate of the present invention;

[0029] Figure 5 This is a three-dimensional structural diagram of the rotating component, transmission cylinder, and locking component of the present invention;

[0030] Figure 6 This is a three-dimensional structural cross-sectional view of the mounting base and locking block of the present invention;

[0031] Figure 7 This is a three-dimensional structural diagram of the locking element and locking block of the present invention;

[0032] Figure 8 This is a three-dimensional structural diagram of the connector and compensation ring of the present invention;

[0033] Figure 9This is a three-dimensional structural cross-sectional view of the mounting component and the follower cylinder of the present invention;

[0034] Figure 10 This is a three-dimensional structural cross-sectional view of the annular airbag and sealing ring of the present invention.

[0035] In the diagram: 1-Pump body, 101-Drain port, 102-Inlet pipe, 103-Support base, 2-Drive shaft, 3-Connecting base, 4-Guide plate, 5-Connecting cylinder, 6-Mounting base, 7-Rotating component, 8-Adjusting plate, 9-Electric push rod, 10-Connecting component, 11-Drive cylinder, 111-Drive bar, 112-Guide groove, 12-Bevel gear ring, 13-Bevel gear, 14-Locking component, 15-Locking block, 151-Locking groove, 16-Compensation ring, 161-Compensation chamber, 17-Power component, 171-Power chamber, 18-Mounting component, 19-Annular airbag, 20-Follower cylinder, 201-Air replenishment chamber, 21-Sealing ring, 22-Limiting plate. Detailed Implementation

[0036] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and drawings.

[0037] An energy-saving mixed-flow pump, see Figures 1-5 The system includes: a pump body 1, which has a drain port 101, a liquid inlet pipe 102 fixedly connected to and connected to the pump body 1, a support base 103 fixedly connected to the side of the pump body 1 away from the liquid inlet pipe 102, a drive shaft 2 rotatably connected to the support base 103, the drive shaft 2 passing through the pump body 1 and fixedly connected to a connecting seat 3, a plurality of circumferentially evenly distributed guide vanes 4 fixedly connected to the connecting seat 3, and a connecting cylinder 5 fixedly connected to all the guide vanes 4; a mounting base 6 rotatably connected to the connecting seat 3, both the connecting seat 3 and the mounting base 6 being located inside the pump body 1, a plurality of circumferentially evenly distributed rotating parts 7 rotatably connected to the mounting base 6, and adjusting pieces 8 fixedly connected to the rotating parts 7; and a power assembly, which is set on the pump body 1 and is used to control the tilt angle of all the adjusting pieces 8.

[0038] The above solution aims to address the problem of low energy utilization and low operating efficiency of existing mixed-flow pumps, where flow rate and head can only be adjusted synchronously. This solution changes the tilt angle of the adjusting plate 8 (i.e., the angle between the plane of the largest side of the adjusting plate 8 and the central axis of the drive shaft 2) to alter the radial force exerted by the adjusting plate 8 on the fluid inside the pump body 1 during circumferential rotation, thereby changing the centrifugal force within the pump body 1. This achieves independent adjustment of flow rate and head, thus improving the energy utilization and operating efficiency of the mixed-flow pump. A spline groove is provided at the right end of the drive shaft 2. In actual use, the drive shaft 2 is connected to the motor output shaft via the spline groove on its right end and a coupling. The number of guide vanes 4 can be adjusted according to factors such as the opening size of the inlet pipe 102. In this paper, the number of guide vanes 4, rotating parts 7, and adjusting plates 8 are all six. The guide vanes 4 rotate counterclockwise circumferentially (the rotation direction in this paper is indicated by the attached diagram). Figure 1 (Taking the left view as an example) During the process, the fluid entering the inlet pipe 102 is pushed to the right; the connecting cylinder 5 connects the six guide vanes 4 into a whole, improving the structural strength of the guide vanes 4. There are gaps between the outer wall of the connecting cylinder 5 and the pump body 1 and the inlet pipe 102. These gaps are used to reduce the probability of friction between the connecting cylinder 5 and the pump body 1 and the inlet pipe 102 during rotation; the adjusting plate 8 generates centrifugal force in the fluid entering the pump body 1 during rotation.

[0039] See Figures 1-6 The power assembly includes: an electric push rod 9, fixedly connected to the pump body 1, with a connecting piece 10 fixedly connected to the telescopic end of the electric push rod 9; a transmission cylinder 11, splinedly connected to the transmission shaft 2 and rotatably connected to the connecting piece 10, the transmission cylinder 11 passing through the pump body 1 and being sealed and slidably connected to it, the transmission cylinder 11 being sealed and slidably connected to the mounting base 6, a transmission bar 111 fixedly connected to the transmission cylinder 11, a guide groove 112 provided in the mounting base 6, the transmission bar 111 sliding in the guide groove 112; and a bevel gear ring 12, fixedly connected to the connecting base 3 on the side near the mounting base 6, with a bevel gear 13 fixedly connected to the rotating part 7 and meshing with the bevel gear ring 12.

[0040] In the above scheme, the aim is to change the tilt angle of all adjusting plates 8 simultaneously; a thrust bearing can be installed between the transmission cylinder 11 and the connecting piece 10 to reduce the wear of both; the number of transmission bars 111 and guide grooves 112 can be adjusted according to the actual situation. In this paper, there are two transmission bars 111 and guide grooves 112 that are evenly distributed in the circumference, so that the transmission bars 111 and the mounting base 6 are circumferentially stable.

[0041] See Figures 3-7It also includes: a number of locking members 14 equal to the number of adjusting pieces 8, which are respectively fixed to the side of adjacent adjusting pieces 8 near the mounting base 6. The locking members 14 are slidably connected to the mounting base 6. Multiple locking blocks 15 are slidably connected in the mounting base 6. A tension spring is fixed between the locking blocks 15 and the mounting base 6. The locking blocks 15 are provided with multiple locking grooves 151. The locking grooves 151 are used to limit adjacent locking members 14. The ratio of the number of locking blocks 15 to the number of locking members 14 is greater than or equal to two. Each locking member 14 corresponds to more than one locking block 15.

[0042] In the above scheme, the aim is to use the locking block 15 to limit the adjacent locking member 14, thereby dispersing the force on the adjusting plate 8, improving the stability of the adjusting plate 8, and extending the service life of the adjusting plate 8. The locking member 14 consists of a round rod and two rectangular rods, with the two rectangular rods located at the two ends of the round rod. The locking member 14 and the rotating member 7 are located on the left and right sides of the adjacent adjusting plate 8, respectively. When the mounting base 6 rotates, the centrifugal force on the locking block 15 is always greater than the tension of the tension spring on it. The number of locking slots 151 corresponding to each locking block 15 can be adjusted according to the actual situation, and the multiple locking slots 151 on each locking block 15 are equidistantly distributed. After adjusting the tilt angle of the adjusting plate 8, the rectangular rod of the locking member 14 can always correspond to the adjacent locking slot 151. The side of the rectangular rod of the locking member 14 closest to the adjacent locking block 15 can be provided with an inclined surface to facilitate the insertion of the rectangular rod of the locking member 14 into the adjacent locking slot 151.

[0043] The working principle of the above scheme is as follows: Before using this device, it is necessary to adjust the device according to the required flow rate and head. The specific steps are as follows: When using this device for river drainage, this device needs to provide a large flow rate and a low head. At this time, calculate the output power corresponding to the target flow rate of this device, and calculate the head corresponding to this output power. By comparing the corresponding head with the actual required head, the tilt angle of the adjusting plate 8 is obtained.

[0044] The steps for adjusting the tilt angle of the adjusting plate 8 are as follows: Control the extension end of the electric push rod 9 to retract, and drive the transmission cylinder 11 to move to the left through the connecting piece 10. The transmission cylinder 11 slides relative to the transmission shaft 2 (the transmission shaft 2 and the connecting seat 3 remain stationary). The transmission cylinder 11 drives the transmission bar 111 to slide in the adjacent guide groove 112, and drives the mounting seat 6 to rotate clockwise. The mounting seat 6 drives the rotating part 7, the adjusting plate 8 and the bevel gear 13 (the following description will take a set of parts directly in front of the mounting seat 6 as an example) to rotate circumferentially. During the circumferential rotation of the bevel gear 13, it always meshes with the bevel gear ring 12, so that the bevel gear 13 rotates circumferentially while rotating on its own axis. The bevel gear 13 drives the rotating part 7 to rotate, and the rotating part 7 drives the adjusting plate 8 to rotate until the adjusting plate 8 reaches the required tilt angle. At this time, the electric push rod 9 is stopped.

[0045] After adjusting the tilt angle of the adjusting plate 8, the drive shaft 2 is connected to the output shaft of an external motor via a coupling. Then, the motor is started, and the output shaft of the motor drives the drive shaft 2 to rotate via the coupling. The drive shaft 2 drives the connecting seat 3 to rotate counterclockwise. The connecting seat 3 drives the six guide plates 4 and the connecting cylinder 5 to rotate circumferentially. The guide plates 4 generate a rightward thrust on the water flowing into the inlet pipe 102, causing the water to enter the pump body 1. When the drive shaft 2 rotates, it drives the drive cylinder 11 to rotate. The drive cylinder 11 drives the mounting seat 6 to rotate via the drive bar 111 and the guide groove 112. The mounting seat 6 rotates synchronously with the connecting seat 3. The mounting seat 6 drives the adjusting plate 8 to rotate circumferentially via the rotating part 7. The adjusting plate 8 drives the water in the pump body 1 to flow circumferentially and generates centrifugal force in the water flow in the pump body 1. Under the action of centrifugal force, the water in the pump body 1 is discharged through the inlet pipe 102.

[0046] As the mounting base 6 rotates, it drives all the locking blocks 15 inside it to rotate circumferentially. Under the influence of centrifugal force, the locking blocks 15 move away from the central axis of the mounting base 6 and stretch the tension spring of the locking blocks 15. At the same time, the distance between the locking blocks 15 and the adjacent rectangular rods on the locking member 14 gradually decreases. Finally, the rectangular rods of the locking member 14 enter the adjacent locking grooves 151. The two locking blocks 15 limit the front and rear sides of the locking member 14 respectively. In this way, when the adjusting plate 8 rotates circumferentially, the locking member 14 can disperse the force on the adjusting plate 8, improve the structural strength of the adjusting plate 8, and extend the service life of the adjusting plate 8.

[0047] After the river drainage work is completed, the motor is stopped, and the rotation speed of the connecting seat 3 and the mounting seat 6 gradually decreases and eventually stops. That is, the centrifugal force on the locking block 15 gradually decreases. When the centrifugal force on the locking block 15 is less than the tension of the tension spring on it, the locking block 15 moves towards the central axis of the mounting seat 6 and resets under the reset action of the tension spring. At the same time, the locking member 14 loses contact with the adjacent locking groove 151, and the locking block 15 releases the restriction on the locking member 14. The telescopic end of the electric push rod 9 is extended, and the above steps of retracting the telescopic end of the electric push rod 9 are repeated in reverse, so that the rotating member 7 and the adjusting plate 8 swing and reset. After the operation of this device is completed, the inside of the device is cleaned with clean water for the next use.

[0048] See Figure 3 and Figure 8It also includes: a compensation ring 16, which is sealed and slidably connected to the pump body 1, and the two together form a compensation chamber 161. All adjusting plates 8 are located between the compensation ring 16 and the inlet pipe 102. The rotation axis of the rotating component 7 is located on the side of the adjacent adjusting plate 8 near the connecting seat 3. The pump body 1 is fixedly connected to a power component 17, and the two together form a power chamber 171. The pump body 1 is provided with a through hole that connects the power chamber 171 and the compensation chamber 161. The power component 17 is sealed and slidably connected to an mounting component 18, which is fixedly connected to the connecting component 10. The mounting component 18 is fixedly connected to an annular airbag 19. In the direction from the support seat 103 to the inlet pipe 102, the inner diameter of the power chamber 171 gradually increases.

[0049] In the above scheme, the aim is to utilize the compensation ring 16 to follow the movement of the adjusting plate 8, so that the gap between the adjusting plate 8 and the compensation ring 16 tends to be constant, thereby maintaining the efficiency of the adjusting plate 8 in guiding the fluid flow in the pump body 1 during circumferential rotation (if the gap between the adjusting plate 8 and the compensation ring 16 is large, then when the adjusting plate 8 rotates circumferentially, the fluid in the gap between the adjusting plate 8 and the compensation ring 16 and the fluid directly pushed by the adjusting plate 8 will form eddies and turbulence due to the difference in flow direction and velocity, thus generating energy loss); initially, there is a gap between the compensation ring 16 and the adjusting plate 8, which is used to reduce the probability of friction between the adjusting plate 8 and the compensation ring 16; the rotation axis of the rotating component 7 is located on the adjacent adjusting plate. On the side near the connecting seat 3, as the adjusting plate 8 rotates, the gap between the adjusting plate 8 and the connecting seat 3 changes little, while the gap between the adjusting plate 8 and the compensation ring 16 changes greatly. Both the power chamber 171 and the compensation chamber 161 contain a liquid medium, which can be hydraulic oil. The annular airbag 19 is used to maintain the seal between the mounting part 18 and the side wall of the power chamber 171, and to adapt to the change in the inner diameter of the power chamber 171. Since the gap between the adjusting plate 8 and the compensation ring 16 changes slowly at first and then quickly during the rotation of the adjusting plate 8 from the initial state, the change in the inner diameter of the power chamber 171 adapts to the above changes. There can be multiple power components 17, but this article uses one power component 17 as an example for explanation.

[0050] See Figures 8-10 It also includes: a follower cylinder 20, which is fixed to the mounting part 18 and is slidably connected to the power part 17. The follower cylinder 20 and the power part 17 together form an air replenishment chamber 201. The follower cylinder 20 and the mounting part 18 are provided with a flow channel that connects the air replenishment chamber 201 to the annular airbag 19. A sealing ring 21 is fixed to the side of the annular airbag 19 away from its central axis. The sealing ring 21 is fixed with a plurality of symmetrical and circumferentially distributed limiting plates 22. The limiting plates 22 are slidably connected to the mounting part 18. The limiting plates 22 are used to limit the shape of the annular airbag 19.

[0051] In the above scheme, the aim is to use the follower cylinder 20 to move with the mounting component 18 and compress the air supply chamber 201 to inject air into the annular airbag 19, maintain the stability of the air pressure inside the annular airbag 19, and thus maintain the sealing effect between the mounting component 18 and the power chamber 171; the shape of the annular airbag 19 is restricted by the limiting plate 22, so that the annular airbag 19 and the mounting component 18 are kept stable in the axial position, thereby improving the transmission accuracy; the air supply chamber 201 contains gas; the number of limiting plates 22 can be adjusted according to the actual situation; both the annular airbag 19 and the sealing ring 21 are made of elastic rubber.

[0052] The working principle of the above scheme is as follows: When the telescopic end of the electric push rod 9 retracts, the telescopic end of the electric push rod 9 drives the adjusting plate 8 to rotate, changing the tilt angle of the adjusting plate 8; on the other hand, it drives the mounting part 18 to move to the left through the connecting part 10. The mounting part 18 drives the annular airbag 19 and the follower cylinder 20 to move together. When the follower cylinder 20 moves to the left, the gas in the air supply chamber 201 enters the annular airbag 19 through the flow channels in the follower cylinder 20 and the mounting part 18. As the annular airbag 19 moves to the left, the volume of the annular airbag 19 gradually increases. The annular airbag 19 drives the sealing ring 21 to deform, keeping the sealing ring 21 in contact with the inner wall of the power chamber 171. (At this time, the sealing ring 21 and the annular airbag 19 together maintain the sealing effect between the mounting part 18 and the power chamber 171). The sealing ring 21 pulls the limiting plate 22 to move, so that the limiting plate 22 moves away from the central axis of the mounting part 18. At the same time, the limiting plate 22 limits the left and right sides of the annular airbag 19, so that the annular airbag 19 can move together with the mounting part 18. As the mounting part 18 moves to the left, the hydraulic oil in the power chamber 171 enters the compensation chamber 161 through the through hole on the pump body 1. The volume of hydraulic oil in the compensation chamber 161 increases and pushes the compensation ring 16 to the left, so that the gap between the compensation ring 16 and the adjusting plate 8 tends to be constant.

[0053] When the device is stopped and the telescopic end of the electric push rod 9 extends and resets, the above steps are repeated in reverse so that the connecting piece 10 drives the mounting piece 18 to reset, the volume of the power chamber 171, the compensation chamber 161 and the air replenishment chamber 201 is restored, and the annular airbag 19 and the sealing ring 21 gradually return to their initial state under their own elasticity. During the deformation of the sealing ring 21, the sealing ring 21 drives all the limiting plates 22 to move and reset.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An energy saving mixed flow pump, characterized by, include: Pump body (1), the pump body (1) is provided with a drain port (101), the pump body (1) is fixedly connected to and connected to an inlet pipe (102), a support base (103) is fixedly connected to the side of the pump body (1) away from the inlet pipe (102), the support base (103) is rotatably connected to a drive shaft (2), the drive shaft (2) passes through the pump body (1) and is fixedly connected to a connecting seat (3), the connecting seat (3) is fixedly connected to a plurality of circumferentially evenly distributed guide vanes (4), and all the guide vanes (4) are fixedly connected to a connecting cylinder (5); Mounting base (6) is rotatably connected to the connecting base (3). Both the connecting base (3) and the mounting base (6) are located inside the pump body (1). The mounting base (6) is rotatably connected to a number of circumferentially evenly distributed rotating parts (7). The rotating parts (7) are fixedly connected to an adjusting plate (8). A power assembly, mounted on the pump body (1), is used to control the tilt angle of all the adjusting plates (8); The power assembly includes: An electric push rod (9) is fixedly connected to the pump body (1), and a connector (10) is fixedly connected to the telescopic end of the electric push rod (9). A transmission cylinder (11) is splined to the transmission shaft (2) and rotatably connected to the connector (10). The transmission cylinder (11) passes through the pump body (1) and is sealed and slidably connected to it. The transmission cylinder (11) is sealed and slidably connected to the mounting base (6). A transmission bar (111) is fixedly connected to the transmission cylinder (111). A guide groove (112) is provided in the mounting base (6). The transmission bar (111) slides in the guide groove (112). A bevel gear ring (12) is fixed to the side of the connecting seat (3) near the mounting seat (6), and the rotating part (7) is fixed to a bevel gear (13) that meshes with the bevel gear ring (12). Also includes: The number of locking members (14) equal to that of the adjusting pieces (8) is fixedly connected to the side of the adjacent adjusting pieces (8) near the mounting base (6). The locking members (14) are slidably connected to the mounting base (6). Multiple locking blocks (15) are slidably connected inside the mounting base (6). A tension spring is fixed between the locking blocks (15) and the mounting base (6). The locking blocks (15) are provided with multiple locking grooves (151). The locking grooves (151) are used to limit the adjacent locking members (14).

2. An energy-saving mixed-flow pump according to claim 1, characterized in that, The ratio of the number of locking blocks (15) to the number of locking elements (14) is greater than or equal to two, and each locking element (14) corresponds to more than one locking block (15).

3. An energy-saving mixed-flow pump according to claim 1, characterized in that, it also... include: The compensation ring (16) is sealed and slidably connected inside the pump body (1), and the two together form the compensation chamber (161). All the adjustment plates (8) are located between the compensation ring (16) and the inlet pipe (102).

4. An energy-saving mixed-flow pump according to claim 3, characterized in that, The rotation axis of the rotating component (7) is located on the side of the adjacent adjusting piece (8) near the connecting seat (3).

5. An energy-saving mixed-flow pump according to claim 3, characterized in that, The pump body (1) is fixedly connected to a power component (17), and the two together form a power chamber (171). The pump body (1) is provided with a through hole that connects the power chamber (171) and the compensation chamber (161). The power component (17) is sealed and slidably connected to an installation component (18). The installation component (18) is fixedly connected to the connector (10). The installation component (18) is fixedly connected to an annular airbag (19).

6. An energy-saving mixed-flow pump according to claim 5, characterized in that, in The inner diameter of the power chamber (171) gradually increases in the direction from the support (103) to the inlet pipe (102).

7. An energy-saving mixed-flow pump according to claim 5, characterized in that, it further... include: The follower cylinder (20) is fixed to the mounting component (18) and is in a sealed sliding connection with the power component (17). The follower cylinder (20) and the power component (17) together form the air replenishment chamber (201). The follower cylinder (20) and the mounting component (18) are provided with a flow channel that connects the air replenishment chamber (201) with the annular airbag (19).

8. An energy-saving mixed-flow pump according to claim 7, characterized in that, it further... include: A sealing ring (21) is fixed to the side of the annular airbag (19) away from its central axis. The sealing ring (21) is fixed with a plurality of symmetrical and circumferentially distributed limiting plates (22). The limiting plates (22) are slidably connected to the mounting member (18). The limiting plates (22) are used to limit the shape of the annular airbag (19).

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