Energy-saving mixed-flow pump

Abstract

The invention discloses an energy-saving mixed-flow pump, and relates to the technical field of mixed-flow pumps. Comprising a pump body, the pump body is fixedly connected and communicated with a liquid inlet pipe, a supporting base is fixedly connected to the side, away from the liquid inlet pipe, of the pump body, the supporting base is rotationally connected with a transmission shaft, the transmission shaft penetrates through the pump body and is fixedly connected with a connecting base, and the connecting base is fixedly connected with a plurality of flow deflectors which are evenly distributed in the circumferential direction; all the flow deflectors are jointly and fixedly connected with a connecting cylinder; and the mounting seat is rotationally connected to the connecting seat, the mounting seat is rotationally connected with a plurality of rotating pieces which are uniformly distributed in the circumferential direction, and the rotating pieces are fixedly connected with adjusting pieces. By changing the inclination angle of the adjusting sheet, the radial force applied to fluid in the pump body when the adjusting sheet rotates in the circumferential direction is changed, and then the centrifugal force in the pump body is changed, so that the flow and the lift are independently adjusted, and the energy utilization rate and the working efficiency of the mixed-flow pump are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mixed flow pumps, and in particular to an energy-saving mixed flow pump. Background Art

[0002] As a fluid machinery that combines the characteristics of a centrifugal pump and an axial flow pump, the core working component of a mixed flow pump adopts a spatially twisted impeller structure. When the impeller rotates circumferentially, the fluid medium is simultaneously subjected to the combined action of radial centrifugal force and axial thrust. The radial centrifugal force mainly affects the head characteristics of the mixed flow pump, while the axial thrust affects its flow characteristics. In actual use, by changing its output power, the flow and head can be synchronously adjusted; however, in actual engineering applications such as river drainage, the mixed flow pump is required to provide a large flow rate and a low head. In this case, although the target flow rate can be achieved by controlling its output power, the centrifugal force generated during its operation is greater than the actual required centrifugal force, resulting in excess centrifugal force, low energy utilization, waste of electricity resources, and low working efficiency of the mixed flow pump. Summary of the Invention

[0003] The present invention provides an energy-saving mixed flow pump to overcome the shortcomings of existing mixed flow pumps in which the flow rate and lift can only be adjusted 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: A pump body, wherein the pump body is provided with a liquid discharge port, the pump body is fixedly connected to and communicated with a liquid inlet pipe, a support seat is fixedly connected to a side of the pump body away from the liquid inlet pipe, the support seat is rotatably connected to a transmission shaft, the transmission shaft passes through the pump body and is fixedly connected to a connecting seat, the connecting seat is fixedly connected to a plurality of guide vanes evenly distributed in the circumferential direction, and all the guide vanes are commonly fixedly connected to a connecting cylinder; A mounting seat, rotatably connected to the connecting seat, the connecting seat and the mounting seat are both located in the pump body, the mounting seat is rotatably connected to a plurality of rotating members evenly distributed circumferentially, and the rotating members are fixed with adjustment plates; A power assembly is provided on the pump body and is used to control the tilt angles of all the adjustment plates.

[0005] Furthermore, the power assembly includes: 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; A transmission cylinder is splined to the transmission shaft and is rotatably connected to the connector. The transmission cylinder passes through the pump body and is sealed, slidingly, and rotatably connected thereto. The transmission cylinder is sealed, slidingly, and rotatably connected to the mounting seat. A transmission bar is fixed to the transmission cylinder. A guide groove is provided in the mounting seat, and the transmission bar slides in the guide groove. The bevel gear ring is fixedly connected to a side of the connecting seat close to the mounting seat, and the rotating member is fixedly connected to a bevel gear meshing with the bevel gear ring.

[0006] Furthermore, it also includes: The same number of locking pieces as the adjusting pieces are respectively fixed to one side of the adjacent adjusting pieces close to the mounting seat. The locking pieces are connected to the mounting seat in a limited sliding manner. A plurality of locking blocks are connected to the mounting seat in a limited sliding manner. A tension spring is fixed between the locking block and the mounting seat. The locking block is provided with a plurality of locking grooves, which are used to limit the adjacent locking pieces.

[0007] Furthermore, the ratio of the number of the locking blocks to the number of the locking elements is greater than or equal to two, and each of the locking elements corresponds to more than one locking block.

[0008] Furthermore, it also includes: The compensation ring is sealingly and slidingly connected to the pump body, and the two together form a compensation cavity. All the adjustment plates are located between the compensation ring and the liquid inlet pipe.

[0009] Furthermore, the rotation axis of the rotating member is located on a side adjacent to the adjusting piece close to the connecting seat.

[0010] Furthermore, the pump body is fixedly connected to a power part, and the two together constitute a power chamber. A through hole is provided on the pump body to connect the power chamber with the compensation chamber. A mounting part is sealed and slidably connected inside the power part. The mounting part is fixedly connected to the connecting part, and the mounting part is fixedly connected to an annular airbag.

[0011] Furthermore, in the direction from the support seat to the liquid inlet pipe, the inner diameter of the power chamber gradually increases.

[0012] Furthermore, it also includes: The follower cylinder is fixed to the mounting member and is sealed and slidably connected to the power member. The follower cylinder and the power member together form an air replenishment chamber. The follower cylinder and the mounting member are both provided with a flow channel connecting the air replenishment chamber with the annular airbag.

[0013] Furthermore, it also includes: A sealing ring is fixed to one side of the annular airbag away from its central axis. The sealing ring is fixed with a plurality of symmetrical and circumferentially distributed limiting plates. The limiting plates are slidably connected to the mounting member and are used to limit the shape of the annular airbag.

[0014] The beneficial effects of the above technical solution are as follows: the present invention changes the inclination angle of the regulating plate to change the magnitude of the radial force exerted by the regulating plate on the fluid in the pump body during circumferential rotation, thereby changing the magnitude of the centrifugal force in the pump body, thereby realizing independent adjustment of the flow rate and head, thereby improving the energy utilization and working efficiency of the mixed flow pump; the locking block is used to limit the adjacent locking parts, and the force on the regulating plate is dispersed by the locking parts, thereby improving the stability of the regulating plate and extending the service life of the regulating plate; the compensation ring is used to follow the movement of the regulating plate, so that the gap between the regulating plate and the compensation ring tends to be constant, thereby maintaining the efficiency of the regulating plate in guiding the flow of fluid in the pump body during circumferential rotation; the follower cylinder follows the movement of the mounting part and compresses the air supply cavity to inject air into the annular airbag, maintain the stability of the air pressure in the annular airbag, thereby maintaining the sealing effect between the mounting part and the power cavity; the limiting plate is used to limit the shape of the annular airbag, so that the axial position of the annular airbag and the mounting part remains stable, thereby improving the transmission accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the connecting cylinder, the adjusting piece and the connecting piece of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the connecting seat, guide plate and connecting cylinder of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the mounting seat, the rotating member and the adjusting plate of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating member, the transmission cylinder and the locking member of the present invention; Figure 6 This is a sectional view of the three-dimensional structure of the mounting seat and the locking block of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the locking member and the locking block of the present invention; Figure 8 Schematic diagram of the three-dimensional structure of the connecting piece and the compensation ring of the present invention; Figure 9 It is a three-dimensional structural cross-sectional view of the mounting member and the follower cylinder of the present invention; Figure 10 It is a three-dimensional structural cross-sectional view of the annular airbag and the sealing ring of the present invention.

[0016] In the figure: 1-pump body, 101-discharge port, 102-liquid inlet pipe, 103-support seat, 2-drive shaft, 3-connecting seat, 4-guide plate, 5-connecting cylinder, 6-mounting seat, 7-rotating member, 8-adjusting plate, 9-electric push rod, 10-connecting member, 11-drive cylinder, 111-drive bar, 112-guide groove, 12-bevel gear ring, 13-bevel gear, 14-locking member, 15-locking block, 151-locking groove, 16-compensating ring, 161-compensating chamber, 17-power member, 171-power chamber, 18-mounting member, 19-annular airbag, 20-follow-up cylinder, 201-air supply chamber, 21-sealing ring, 22-limiting plate. DETAILED DESCRIPTION

[0017] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings.

[0018] An energy-saving mixed flow pump, see Figure 1-Figure 5 , including: a pump body 1, the pump body 1 is provided with a discharge port 101, the pump body 1 is fixedly connected to and communicated with a liquid inlet pipe 102, the side of the pump body 1 away from the liquid inlet pipe 102 is fixedly connected to a support seat 103, the support seat 103 is rotatably connected to the transmission shaft 2, the transmission 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 number of guide vanes 4 uniformly distributed in the circumferential direction, and all the guide vanes 4 are commonly fixedly connected to a connecting tube 5; a mounting seat 6, rotatably connected to the connecting seat 3, the connecting seat 3 and the mounting seat 6 are both located in the pump body 1, the mounting seat 6 is rotatably connected to a number of rotating members 7 uniformly distributed in the circumferential direction, and the rotating member 7 is fixedly connected to an adjusting piece 8; a power assembly, arranged on the pump body 1, for controlling the inclination angle of all adjusting pieces 8.

[0019] The above scheme aims to solve the problem of low energy utilization and low working efficiency of the existing mixed flow pump due to the fact that the flow rate and head can only be adjusted synchronously during use; this scheme changes the inclination angle of the adjusting plate 8 (that is, the angle between the plane where the largest side surface of the adjusting plate 8 is located and the central axis of the transmission shaft 2) to change the radial force exerted by the adjusting plate 8 on the fluid in the pump body 1 during circumferential rotation, thereby changing the magnitude of the centrifugal force in the pump body 1, thereby achieving independent adjustment of the flow rate and head, thereby improving the energy utilization and working efficiency of the mixed flow pump; a spline groove is provided at the right end of the transmission shaft 2. In actual use, the transmission shaft 2 is connected to the motor output shaft through the spline groove and the coupling at its right end; the number of guide plates 4 can be adjusted according to factors such as the size of the opening of the liquid inlet pipe 102. In this article, the number of guide plates 4, rotating parts 7 and adjusting plates 8 are all six, and the guide plate 4 rotates counterclockwise (the rotation direction in this article is shown in the figure below). Figure 1During the rotation, the fluid entering the liquid inlet pipe 102 is thrust to the right; the connecting cylinder 5 connects the six guide plates 4 as a whole to improve the structural strength of the guide plates 4. There are gaps between the outer wall of the connecting cylinder 5 and the pump body 1 and the liquid inlet pipe 102. The gaps are used to reduce the probability of friction between the connecting cylinder 5 and the pump body 1 and the liquid inlet pipe 102 during the rotation process; the regulating plate 8 generates centrifugal force on the fluid entering the pump body 1 during the rotation process.

[0020] See also Figures 1-6 The power assembly includes: an electric push rod 9, which is fixed to the pump body 1, and the telescopic end of the electric push rod 9 is fixed with a connecting piece 10; a transmission cylinder 11, which is splined to the transmission shaft 2 and is rotatably connected to the connecting piece 10, and the transmission cylinder 11 passes through the pump body 1 and is sealed, slidingly and rotatably connected thereto, and the transmission cylinder 11 is sealed, slidingly and rotatably connected to the mounting seat 6, and the transmission cylinder 11 is fixed with a transmission bar 111, and a guide groove 112 is provided in the mounting seat 6, and the transmission bar 111 slides in the guide groove 112; a bevel gear ring 12, which is fixed to the side of the connecting seat 3 close to the mounting seat 6, and the rotating member 7 is fixed with a bevel gear 13 meshing with the bevel gear ring 12.

[0021] In the above scheme, the aim is to synchronously change the inclination angle of all adjustment plates 8; a thrust bearing can be installed between the transmission cylinder 11 and the connecting member 10 to reduce the wear of both; the number of transmission bars 111 and guide grooves 112 can be adjusted according to actual conditions. In this article, both the transmission bar 111 and the guide groove 112 are evenly distributed circumferentially, so that the circumferential force of the transmission bar 111 and the mounting seat 6 is stable.

[0022] See also Figure 3-Figure 7 , and also includes: a number of locking pieces 14 equal to the adjusting pieces 8, respectively fixed to the side of the adjacent adjusting pieces 8 close to the mounting seat 6, the locking pieces 14 are connected to the mounting seat 6 in a limited sliding manner, and a plurality of locking blocks 15 are connected to the mounting seat 6 in a limited sliding manner, a tension spring is fixed between the locking block 15 and the mounting seat 6, and the locking block 15 is provided with a plurality of locking grooves 151, which are used to limit the adjacent locking pieces 14; the ratio of the number of locking blocks 15 to the number of locking pieces 14 is greater than or equal to two, and each locking piece 14 corresponds to more than one locking block 15.

[0023] In the above scheme, the locking block 15 is intended to limit the adjacent locking pieces 14, and the locking piece 14 is used to disperse the force on the adjusting piece 8, thereby improving the stability of the adjusting piece 8 and extending the service life of the adjusting piece 8; the locking piece 14 is composed of a round rod and two rectangular rods, and the two rectangular rods are respectively located at the two ends of the round rod, and the locking piece 14 and the rotating piece 7 are respectively located on the left and right parts of the adjacent adjusting piece 8; when the mounting seat 6 rotates, the centrifugal force exerted on the locking block 15 is always greater than the tension of the tension spring thereon; the number of locking grooves 151 corresponding to each locking block 15 can be adjusted according to actual conditions, and the multiple locking grooves 151 on each locking block 15 are equidistantly distributed. After adjusting the inclination angle of the adjusting piece 8, the rectangular rod of the locking piece 14 can always correspond to the adjacent locking groove 151, and an inclined surface can be provided on the side of the rectangular rod of the locking piece 14 close to the adjacent locking block 15 to facilitate the rectangular rod of the locking piece 14 to be inserted into the adjacent locking groove 151.

[0024] 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, the output power corresponding to the target flow rate of this device is calculated, and the head corresponding to the device under the output power is calculated. The inclination angle of the adjusting plate 8 is obtained by comparing the corresponding head with the actual required head.

[0025] The steps for adjusting the inclination angle of the adjusting plate 8 are as follows: control the telescopic end of the electric push rod 9 to retract, and drive the transmission cylinder 11 to move to the left through the connecting member 10, and the transmission cylinder 11 slides relative to the transmission shaft 2 (the transmission shaft 2 and the connecting seat 3 remain stationary), and 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, and the mounting seat 6 drives the rotating member 7, the adjusting plate 8 and the bevel gear 13 (hereinafter referred to as an example, a group of parts directly in front of the mounting seat 6) to rotate circumferentially. During the circumferential rotation of the bevel gear 13, it is always engaged with the bevel gear ring 12, so that the bevel gear 13 rotates circumferentially while rotating on its own. The bevel gear 13 drives the rotating member 7 to rotate, and the rotating member 7 drives the adjusting plate 8 to rotate until the adjusting plate 8 reaches the desired inclination angle, at which time the electric push rod 9 is stopped.

[0026] After the inclination angle of the adjusting plate 8 is adjusted, the transmission shaft 2 is connected to the output shaft of the external motor through the coupling, and then the motor is started. The output shaft of the motor drives the transmission shaft 2 to rotate through the coupling, and the transmission shaft 2 drives the connecting seat 3 to rotate counterclockwise, and the connecting seat 3 drives the six guide plates 4 and the connecting cylinder 5 to rotate circumferentially. The guide plate 4 generates a rightward thrust on the water flow entering the liquid inlet pipe 102, so that the water flows into the pump body 1; when the transmission shaft 2 rotates, the transmission shaft 2 drives the transmission cylinder 11 to rotate, and the transmission cylinder 11 drives the mounting seat 6 to rotate through the transmission bar 111 and the guide groove 112, and the mounting seat 6 rotates synchronously with the connecting seat 3, and the mounting seat 6 drives the adjusting plate 8 to rotate circumferentially through the rotating member 7. The adjusting plate 8 drives the water in the pump body 1 to flow circumferentially and causes the water flow in the pump body 1 to generate centrifugal force. The water flow in the pump body 1 is discharged through the liquid inlet pipe 102 under the action of centrifugal force.

[0027] As the mounting seat 6 rotates, the mounting seat 6 drives all the locking blocks 15 therein to rotate circumferentially. The locking blocks 15 are affected by centrifugal force and move in a direction away from the central axis of the mounting seat 6, stretching 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 piece 8 rotates circumferentially, the locking piece 14 can disperse the force exerted on the adjusting piece 8, thereby improving the structural strength of the adjusting piece 8 and extending the service life of the adjusting piece 8.

[0028] After completing the river drainage work, stop the motor, the speed of the connecting seat 3 and the mounting seat 6 gradually decreases and finally stops rotating, 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 thereon, the locking block 15 moves toward the direction close to 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 limit on the locking member 14; control the telescopic end of the electric push rod 9 to extend, and repeat the above-mentioned steps of retracting the telescopic end of the electric push rod 9 in reverse, so that the rotating member 7 and the adjusting piece 8 swing and reset; after the work of this device is completed, use clean water to clean the inside of the device for easy use next time.

[0029] See also Figure 3 and Figure 8, also includes: a compensation ring 16, which is sealingly and slidingly connected to the pump body 1, and the two together constitute a compensation chamber 161, all adjustment sheets 8 are located between the compensation ring 16 and the liquid inlet pipe 102; the rotation axis of the rotating member 7 is located on the side of the adjacent adjustment sheet 8 close to the connecting seat 3; the pump body 1 is fixedly connected to a power member 17, and the two together constitute a power chamber 171, and a through hole connecting the power chamber 171 with the compensation chamber 161 is provided on the pump body 1, and a mounting member 18 is sealingly and slidingly connected in the power member 17, the mounting member 18 is fixed to the connecting member 10, and the mounting member 18 is fixed to an annular airbag 19; in the direction from the support seat 103 to the liquid inlet pipe 102, the inner diameter of the power chamber 171 gradually increases.

[0030] In the above scheme, the compensation ring 16 is intended to follow the movement of the regulating plate 8 so that the gap between the regulating plate 8 and the compensation ring 16 tends to be constant, thereby maintaining the efficiency of the regulating plate 8 in guiding the flow of the fluid in the pump body 1 during the circumferential rotation (if the gap between the regulating plate 8 and the compensation ring 16 is large, then when the regulating plate 8 rotates circumferentially, the fluid in the gap between the regulating plate 8 and the compensation ring 16 and the fluid directly pushed by the regulating plate 8 will form eddies and turbulence due to the difference in flow direction and speed, thereby generating energy loss); initially, there is a gap between the compensation ring 16 and the regulating plate 8, and the gap is used to reduce the probability of friction between the regulating plate 8 and the compensation ring 16; the rotation axis of the rotating member 7 is located between the adjacent regulating plates 8 is close to the side of the connecting seat 3, that is, as the regulating piece 8 rotates, the gap between the regulating piece 8 and the connecting seat 3 changes little, and the gap between the regulating piece 8 and the compensation ring 16 changes greatly; liquid medium is stored in the power chamber 171 and the compensation chamber 161, and the medium 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 adapt to the change of the inner diameter of the power chamber 171; since the regulating piece 8 rotates from the initial state, the gap between the regulating piece 8 and the compensation ring 16 changes slowly at first and then quickly, so the above changes are adapted to by the change of the inner diameter of the power chamber 171; the number of power parts 17 can be multiple, and this article takes one power part 17 as an example for explanation.

[0031] See also Figures 8-10 , also includes: a follower cylinder 20, which is fixed to the mounting member 18 and is sealed and slidably connected to the power member 17. The follower cylinder 20 and the power member 17 together form an air-injection chamber 201. The follower cylinder 20 and the mounting member 18 are jointly provided with a flow channel that connects the air-injection chamber 201 with the annular airbag 19; a sealing ring 21, which is fixed to the side of the annular airbag 19 away from its central axis. The sealing ring 21 is fixed with multiple symmetrical and circumferentially distributed limiting plates 22. The limiting plates 22 are slidably connected to the mounting member 18 and are used to limit the shape of the annular airbag 19.

[0032] In the above scheme, the purpose is to follow the movement of the mounting part 18 through the follower cylinder 20, compress the air-filling chamber 201, and inject air into the annular airbag 19 to maintain the stability of the air pressure in the annular airbag 19, thereby maintaining the sealing effect between the mounting part 18 and the power chamber 171; the limiting plate 22 is used to limit the shape of the annular airbag 19, so that the axial position of the annular airbag 19 and the mounting part 18 remains stable, thereby improving the transmission accuracy; gas is stored in the air-filling chamber 201; the number of limiting plates 22 can be adjusted according to actual conditions; the annular airbag 19 and the sealing ring 21 are both made of elastic rubber.

[0033] The working principle of the above scheme is as follows: when the telescopic end of the electric push rod 9 is retracted, the telescopic end of the electric push rod 9 drives the adjusting piece 8 to rotate, changing the inclination angle of the adjusting piece 8; on the other hand, the mounting piece 18 is driven to move leftward through the connecting piece 10, and the mounting piece 18 drives the annular airbag 19 and the follower cylinder 20 to move together. When the follower cylinder 20 moves leftward, the gas in the air replenishment chamber 201 enters the annular airbag 19 through the flow channel in the follower cylinder 20 and the mounting piece 18. As the annular airbag 19 moves leftward, the volume of the annular airbag 19 gradually increases, and 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. The sealing ring 21 and the annular airbag 19 jointly maintain the sealing effect between the mounting part 18 and the power chamber 171, and the sealing ring 21 pulls the limit plate 22 to move, so that the limit plate 22 moves away from the central axis of the mounting part 18. At the same time, the limit plate 22 limits the left and right sides of the annular airbag 19, so that the annular airbag 19 can move 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, and the volume of the hydraulic oil in the compensation chamber 161 increases and pushes the compensation ring 16 to move to the left, so that the gap between the compensation ring 16 and the adjustment plate 8 tends to be constant.

[0034] When the device is stopped and the telescopic end of the electric push rod 9 is extended and reset, the above steps are repeated in reverse, so that the connecting part 10 drives the mounting part 18 to reset, the volume of the power chamber 171, the compensation chamber 161 and the air replenishing chamber 201 are restored, and the annular airbag 19 and the sealing ring 21 gradually return to their initial state under the action of their own elasticity. During the deformation process of the sealing ring 21, the sealing ring 21 drives all the limit plates 22 to move and reset.

[0035] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An energy-saving mixed flow pump, characterized in that: include: A pump body (1), wherein the pump body (1) is provided with a liquid discharge port (101), the pump body (1) is fixedly connected to and communicated with a liquid inlet pipe (102), a side of the pump body (1) away from the liquid inlet pipe (102) is fixedly connected to a support seat (103), the support seat (103) is rotatably connected to a transmission shaft (2), the transmission 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 guide vanes (4) uniformly distributed in the circumferential direction, and all the guide vanes (4) are commonly fixedly connected to a connecting cylinder (5); A mounting seat (6) is rotatably connected to the connecting seat (3), the connecting seat (3) and the mounting seat (6) are both located in the pump body (1), the mounting seat (6) is rotatably connected to a plurality of rotating members (7) evenly distributed in the circumferential direction, and the rotating members (7) are fixedly connected to an adjusting piece (8); A power assembly is provided on the pump body (1) and is used to control the tilt angles of all the adjustment plates (8).

2. An energy-saving mixed flow pump according to claim 1, characterized in that: The power assembly includes: An electric push rod (9) is fixedly connected to the pump body (1), and a connecting piece (10) is fixedly connected to the telescopic end of the electric push rod (9); A transmission cylinder (11) is spline-connected to the transmission shaft (2) and is rotationally connected to the connecting member (10). The transmission cylinder (11) passes through the pump body (1) and is sealingly, slidingly and rotationally connected thereto. The transmission cylinder (11) is sealingly, slidingly and rotationally connected to the mounting seat (6). A transmission bar (111) is fixed to the transmission cylinder (111). A guide groove (112) is provided in the mounting seat (6), and the transmission bar (111) slides in the guide groove (112). The bevel gear ring (12) is fixedly connected to a side of the connecting seat (3) close to the mounting seat (6), and the rotating member (7) is fixedly connected to a bevel gear (13) meshing with the bevel gear ring (12).

3. An energy-saving mixed flow pump according to claim 2, characterized in that include: The same number of locking members (14) as the regulating pieces (8) are respectively fixed to one side of the adjacent regulating pieces (8) close to the mounting seat (6); the locking members (14) are connected to the mounting seat (6) in a limited sliding manner; a plurality of locking blocks (15) are connected to the mounting seat (6) in a limited sliding manner; a tension spring is fixed between the locking block (15) and the mounting seat (6); the locking block (15) is provided with a plurality of locking grooves (151); the locking grooves (151) are used to limit the adjacent locking members (14).

4. An energy-saving mixed flow pump according to claim 3, characterized in that: The ratio of the number of the locking blocks (15) to the number of the locking elements (14) is greater than or equal to two, and each locking element (14) corresponds to more than one locking block (15).

5. An energy-saving mixed flow pump according to claim 3, characterized in that include: The compensation ring (16) is sealingly and slidably connected to the pump body (1), and the two together form a compensation cavity (161), and all the adjustment plates (8) are located between the compensation ring (16) and the liquid inlet pipe (102).

6. An energy-saving mixed flow pump according to claim 5, characterized in that: The rotation axis of the rotating member (7) is located on a side adjacent to the adjusting piece (8) close to the connecting seat (3).

7. An energy-saving mixed flow pump according to claim 5, characterized in that: The pump body (1) is fixedly connected to a power member (17), and the two together form a power chamber (171). A through hole is provided on the pump body (1) for connecting the power chamber (171) with the compensation chamber (161). A mounting member (18) is sealingly and slidably connected inside the power member (17). The mounting member (18) is fixedly connected to the connecting member (10), and the mounting member (18) is fixedly connected to an annular airbag (19).

8. An energy-saving mixed flow pump according to claim 7, characterized in that In the direction from the support seat (103) to the liquid inlet pipe (102), the inner diameter of the power chamber (171) gradually increases.

9. An energy-saving mixed flow pump according to claim 7, characterized in that include: The follower cylinder (20) is fixed to the mounting member (18) and is sealingly and slidingly connected to the power member (17). The follower cylinder (20) and the power member (17) together form an air replenishment chamber (201). The follower cylinder (20) and the mounting member (18) are provided with a flow channel connecting the air replenishment chamber (201) with the annular airbag (19).

10. An energy-saving mixed flow pump according to claim 9, characterized in that include: A sealing ring (21) is fixed to a side of the annular airbag (19) away from the central axis thereof. 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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