A high-efficiency centrifugal pump

Abstract

The present invention relates to the field of centrifugal pumps, and specifically to a high-efficiency centrifugal pump, comprising a shell and a centrifugal device; the shell is a circular structure, and a first rotating driver is arranged on one side of the shell; a rotating shaft is fixedly arranged on the output end of the first rotating driver; a plurality of first blades are provided, and the plurality of first blades are fixedly arranged on the rotating shaft around the axis of the rotating shaft; a second blade is slidably arranged on one side of the first blade along the extension direction of the first blade; a first gear is rotatably arranged on the first blade along the width direction of the first blade, and meshing teeth are evenly provided on the side of the second blade close to the first blade, and the first gear meshes with the meshing teeth; a first driving device is arranged on one side of the first gear; a speed monitoring device is arranged on the rotating shaft; two volume blocks are provided, and the volume blocks are annular structures and can slide with the shell; the second driving device is arranged below the volume block, so that the device can improve the delivery flow while protecting the motor from damage.

Description

Technical Field

[0001] The present invention relates to the field of centrifugal pumps, in particular to a high-energy-efficiency centrifugal pump. Background Art

[0002] The centrifugal pump has a simple and compact structure. For the same delivery volume, the centrifugal pump occupies a small area, is light in weight, consumes less material, and has high requirements on the foundation. In order to make the centrifugal pump obtain higher output energy, a gradual pressurization device is usually used. However, the common pressurization device occupies a large space and is complicated to assemble. It is easy to consume energy in the intermediate process and is not easy to install.

[0003] Chinese patent CN211692847U discloses an enhanced high-efficiency centrifugal pump, including a centrifugal pump body, a motor assembly, a base, a spiral water inlet and a turbine water outlet. The centrifugal pump body is linked to the motor assembly and installed together on the base. The spiral water inlet is fixedly connected to the centrifugal pump body, and the turbine water outlet is fixedly connected to the centrifugal pump body. During actual operation, the spiral water inlet is connected to the water pipe and placed in the water; the motor is started, and the motor drives the centrifugal pump shaft to rotate through the coupling, and the centrifugal pump shaft drives the enhanced impeller to rotate at high speed in the pump casing to generate negative pressure water absorption. The centrifugal pump body is provided with an enhanced impeller, a pump casing, a pump shaft and a shaft sealing device; in the pump casing, the impeller is fixedly installed on the pump shaft and sealed by the shaft sealing device; the enhanced impeller is provided with a guide belt at each blade, and the centrifugal pump body is fixedly installed on the base. Further, A boost hole is provided on the guide belt, and the boost holes are in the same position on the guide belt, but have different apertures. The aperture of the boost hole increases in sequence according to the guide belt. Further, the motor assembly is provided with a motor, a coupling, a protective cover, a motor fixing bracket and a coupling fixing bracket; the motor is connected to the coupling and is connected to the pump shaft; the motor is installed on the base through the motor fixing bracket; the coupling is installed on the base through the coupling fixing bracket. Further, the inner wall of the spiral water inlet is provided with a spiral blade, a spiral shell and a universal water pipe opening; the spiral blade is fixedly installed in the spiral shell, and the universal water pipe opening is installed at the lower end of the spiral shell and communicates with it. Further, the turbine water outlet is provided with a turbine shell and a universal water pipe opening; the universal water pipe opening is installed at the water outlet of the turbine shell, and the inner diameter of the interface at the turbine water inlet is larger than the inner diameter of the water outlet in the turbine water outlet.

[0004] Although the above scheme increases the pressure of the centrifugal pump, it is unable to deliver large flow due to the diameter limitation of the pump body. To meet the requirement of large flow delivery, it is necessary to increase the speed or increase the diameter of the pump body. The increase in speed depends on the motor. Long-term use of the motor will reduce the life of the motor or even cause damage. Increasing the diameter of the pump body will cause greater torque when the motor drives the pump body to rotate initially, resulting in excessive load on the motor and damage to the motor. Summary of the Invention

[0005] In response to the above problems, a high-efficiency centrifugal pump is provided. Water flows into the shell from one side and is discharged from the top of the shell. After the water fills the shell, the first rotary drive is started, the first rotary drive drives the rotating shaft to rotate, and the first blade rotates with the rotating shaft. The two volume blocks located in the shell are in a state of approaching each other, and the volume in the shell is at a minimum state. After the first rotary drive drives the rotating shaft to continuously increase in speed, the speed monitoring device detects that the speed reaches a specified speed. The speed monitoring device controls the second drive device through a controller to drive the two volume blocks away from each other. The two volume blocks leave the shell. When the two volume blocks are completely away, the volume in the shell is at a maximum state. The first drive device is then started and causes the first gear to drive the second blade to extend along the extension direction of the first blade, so that the rotation radius of the pump body is increased, thereby increasing the delivery flow rate. Since the rotating shaft has an initial speed, the load on the first rotary drive will not be too large when the second blade extends, so that the device can improve the delivery flow rate while protecting the motor from damage.

[0006] A high-efficiency centrifugal pump comprises a housing and a centrifugal device; the centrifugal device comprises a first rotary driver, a rotating shaft, a first blade, a second blade, a first gear, a first driving device, a speed monitoring device, a volume block and a second driving device; the housing is a circular structure, the first rotary driver is arranged on one side of the housing, and the output end of the first rotary driver points to the housing; the rotating shaft is fixedly arranged on the output end of the first rotary driver; a plurality of first blades are provided, and the plurality of first blades are fixedly arranged on the rotating shaft around the axis of the rotating shaft; the second blade is slidably arranged on one side of the first blade along the extension direction of the first blade; the first gear is rotatable along the width direction of the first blade and is arranged on the first blade On the blade, meshing teeth are evenly provided on the side of the second blade close to the first blade, and the first gear is engaged with the meshing teeth; the first driving device is arranged on one side of the first gear, and the first driving device is used to drive the first gear to rotate; the speed monitoring device is arranged on the rotating shaft, and the speed monitoring device is used to monitor the rotation speed of the rotating shaft, and a controller is provided on the shell; there are two volume blocks, and the volume blocks are annular structures. The two volume blocks are symmetrically arranged on both sides of the shell along the axis of the shell, and the volume blocks can slide with the shell; the second driving device is arranged below the volume block, and the second driving device is used to drive the two volume blocks to approach or move away from each other, and the speed monitoring device controls the second driving device through the controller.

[0007] Preferably, the speed monitoring device includes a first transmission component, a rotating disk, a conductive ring, a contact piece, a spring and an adapter; the first transmission component is arranged on the rotating shaft; the rotating disk is arranged on the side of the first transmission component away from the rotating shaft, and the rotating shaft drives the rotating disk to rotate through the first transmission component, and a plurality of conductive grooves are provided on the side wall of the rotating disk; the conductive ring is arranged on the periphery of the rotating disk along the axis of the rotating disk; the contact piece can be slidably arranged in the conductive groove, and there is a first gap between the contact piece and the bottom of the conductive groove; the spring is arranged in the first gap; the adapter piece is arranged on the upper part of the rotating disk along the axis of the rotating disk, the adapter piece rotates in conjunction with the rotating disk, and the adapter piece can be electrically connected to the conductive ring through the contact piece.

[0008] Preferably, the first transmission assembly includes a first bevel gear, a second bevel gear, a third gear and a fourth gear; the first bevel gear is fixedly arranged on the rotating shaft along the axis of the rotating shaft; the second bevel gear is arranged on one side of the first bevel gear, and the second bevel gear and the first bevel gear are engaged with each other; the third gear is fixedly arranged on the upper part of the second bevel gear; the fourth gear is arranged on one side of the third gear, the third gear and the fourth gear are engaged with each other, and the fourth gear is fixedly connected to the rotating disk.

[0009] Preferably, the first driving device includes a second rotary driver, a second gear, a second transmission assembly and an annular plate; the annular plate is arranged on one side of the first gear along the axis of the rotating shaft; the second transmission assembly is arranged on the side of the annular plate away from the first gear; the second gear is arranged on one side of the second transmission assembly; the second rotary driver is fixedly arranged on one side of the second gear, the second rotary driver can drive the second gear to rotate, and the second gear drives the first gear to rotate through the second transmission assembly.

[0010] Preferably, the second transmission assembly includes a gear ring and a fifth gear; the gear ring is rotatable around the axis of the rotating shaft and is arranged on the side of the annular plate away from the first gear, the second gear is located inside the ring of the gear ring, and the second gear and the gear ring are engaged with each other; the fifth gear is arranged on the outer ring side of the gear ring, the fifth gear and the gear ring are engaged with each other, and the fifth gear is fixedly connected to the first gear.

[0011] Preferably, the centrifugal device further comprises a limiting block; the limiting block is arranged on a side of the second blade away from the first blade.

[0012] Preferably, the second driving device includes a third rotation driver, a screw rod, a slider and a sliding seat; the slider is fixedly arranged at the lower part of the volume block; the sliding seat is arranged at the lower part of the slider, and the slider and the sliding seat are slidably matched; the screw rod is arranged on the sliding seat along the axis of the shell, the screw rod passes through the slider, the screw rod and the slider thread are matched, and the threads on both sides of the screw rod rotate in opposite directions; the third rotation driver is arranged on one side of the screw rod, and the third rotation driver is used to drive the screw rod to rotate.

[0013] Preferably, the second driving device further includes a pressure sensor; two pressure sensors are provided, and the two pressure sensors are symmetrically arranged on both side walls of the inner side of the sliding seat.

[0014] Preferably, the second driving device further comprises a guide rod; the guide rod is arranged on a sliding seat on one side of the screw rod along the axial direction of the screw rod, and the guide rod is in sliding engagement with the slider.

[0015] Preferably, the centrifugal device further comprises a connecting shell; the connecting shell is arranged on one side of the shell, and the connecting shell is used to connect the side wall of the shell.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention comprises a first rotary driver, a rotating shaft, a first blade, a second blade, a first gear, a first driving device, a speed monitoring device, a volume block, and a second driving device. Water flows into a housing from one side and is discharged from the top of the housing. After the water fills the housing, the first rotary driver is activated, driving the rotating shaft to rotate. The first blade rotates along with the rotating shaft, and the two volume blocks located in the housing are brought closer to each other, and the volume in the housing is at a minimum. After the first rotary driver drives the rotating shaft to continuously increase its speed, the speed monitoring device detects that the speed reaches a specified speed. The speed monitoring device controls the second driving device through a controller to drive the two volume blocks away from each other. The two volume blocks leave the housing. When the two volume blocks are completely removed, the volume in the housing is at a maximum. The first driving device is then activated and causes the first gear to drive the second blade to extend in the extension direction of the first blade, thereby increasing the rotation radius of the pump body and thereby increasing the delivery flow rate. Since the rotating shaft has an initial speed, the load on the first rotary driver is not excessive when the second blade extends. This allows the device to increase the delivery flow rate while protecting the motor from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a high-efficiency centrifugal pump Figure 1 ;

[0019] Figure 2 A three-dimensional diagram of a high-efficiency centrifugal pump Figure 2 ;

[0020] Figure 3 It is a high energy efficiency centrifugal pump Figure 3 A partial enlarged schematic diagram of point A in the middle;

[0021] Figure 4 A three-dimensional diagram of a high-efficiency centrifugal pump Figure 3 ;

[0022] Figure 5 It is a side view of a high-efficiency centrifugal pump;

[0023] Figure 6 It is a high energy efficiency centrifugal pump Figure 5 Schematic cross-sectional view at the middle BB;

[0024] Figure 7 It is a high energy efficiency centrifugal pump Figure 6 A partial enlarged schematic diagram of point C in the middle;

[0025] Figure 8 It is a three-dimensional schematic diagram of a high-efficiency centrifugal pump with the second drive device and volume block removed;

[0026] Figure 9 It is a high energy efficiency centrifugal pump Figure 8 A partial enlarged schematic diagram of point D in the middle;

[0027] Figure 10 The present invention is a three-dimensional schematic diagram of a rotating shaft of a high-efficiency centrifugal pump provided with a first blade, a second blade and a first gear;

[0028] Figure 11 It is a high energy efficiency centrifugal pump Figure 10 A partial enlarged schematic diagram of point E in the middle.

[0029] The numbers in the figure are:

[0030] 1- shell;

[0031] 2- Centrifugal device;

[0032] 21- first rotary driver;

[0033] 22 - shaft; 221 - first blade; 222 - second blade; 223 - first gear; 224 - limit block;

[0034] 23-first driving device; 231-second rotary driver; 232-second gear; 233-second transmission assembly; 2331-gear ring; 2332-fifth gear; 234-annular plate;

[0035] 24-speed monitoring device; 241-first transmission assembly; 2411-first bevel gear; 2412-second bevel gear; 2413-third gear; 2414-fourth gear; 242-rotating disk; 243-conductive ring; 244-contact member; 245-spring; 246-adapter;

[0036] 25-volume block;

[0037] 26 - second driving device; 261 - third rotary driver; 262 - lead screw; 263 - slider; 264 - sliding seat; 265 - guide rod; 27 - connecting shell. DETAILED DESCRIPTION

[0038] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Reference Figure 1 、 Figure 2 、 Figure 5 、 Figure 8 and Figure 11 : A high-efficiency centrifugal pump, comprising a housing 1 and a centrifugal device 2; the centrifugal device 2 comprises a first rotary driver 21, a rotating shaft 22, a first blade 221, a second blade 222, a first gear 223, a first driving device 23, a speed monitoring device 24, a volume block 25 and a second driving device 26; the housing 1 is a circular structure, the first rotary driver 21 is arranged on one side of the housing 1, and the output end of the first rotary driver 21 points to the housing 1; the rotating shaft 22 is fixedly arranged on the output end of the first rotary driver 21; a plurality of first blades 221 are provided, and the plurality of first blades 221 are fixedly arranged on the rotating shaft 22 around the axis of the rotating shaft 22; the second blade 222 is slidably arranged on one side of the first blade 221 along the extension direction of the first blade 221; the first gear 223 is rotatably arranged along the width direction of the first blade 221 On the first blade 221, meshing teeth are evenly provided on the side of the second blade 222 close to the first blade 221, and the first gear 223 is engaged with the meshing teeth; the first driving device 23 is arranged on one side of the first gear 223, and the first driving device 23 is used to drive the first gear 223 to rotate; the speed monitoring device 24 is arranged on the rotating shaft 22, and the speed monitoring device 24 is used to monitor the rotation speed of the rotating shaft 22, and a controller is provided on the shell 1; there are two volume blocks 25, and the volume blocks 25 are annular structures. The two volume blocks 25 are symmetrically arranged on both sides of the shell 1 along the axis of the shell 1, and the volume blocks 25 can slide with the shell 1; the second driving device 26 is arranged below the volume block 25, and the second driving device 26 is used to drive the two volume blocks 25 to approach or move away from each other, and the speed monitoring device 24 controls the second driving device 26 through the controller.

[0040] A water inlet is provided on one side of the shell 1 along the axis of the shell 1, and a water outlet is provided on the upper part of the shell 1. Water flows into the shell 1 from the water inlet and is discharged from the water outlet. When water delivery is required, the first rotary driver 21 is started. The first rotary driver 21 is preferably a servo motor. The first rotary driver 21 drives the rotating shaft 22 to rotate, and the first blade 221 provided on the rotating shaft 22 will also rotate with the rotating shaft 22. Since the second blade 222 is located on one side of the first blade 221, and the first gear 223 is rotatably provided on the first blade 221, the second blade 222 and the first gear 223 will rotate with the second blade 222. A blade 221 rotates, and a speed monitoring device 24 is provided on the rotating shaft 22. At this time, when the first rotary driver 21 drives the rotating shaft 22 to rotate, the two volume blocks 25 are in a state of approaching each other. At this time, the volume in the shell 1 is the smallest. Since the volume in the shell 1 is the smallest, the load of the first rotary driver 21 when driving the rotating shaft 22 to rotate is also the smallest. As the speed of the rotating shaft 22 continues to increase, the speed monitoring device 24 detects that the speed of the rotating shaft 22 reaches the specified speed, and then the speed monitoring device 24 sends a signal to the controller. The speed monitoring device 24 controls the second driving device 26 to start through the controller, and the second driving device 26 starts. 6 drives the two volume blocks 25 away from each other, so that the volume blocks 25 will gradually leave the interior of the shell 1, causing the volume inside the shell 1 to increase continuously. When the volume blocks 25 move to both sides of the shell 1 and stop, the space inside the shell 1 is the largest, that is, the water storage capacity inside the shell 1 is at the maximum state at this time. Since the rotating shaft 22 is always in a rotating state, the water in the shell 1 has a certain rotation rate. After the second driving device 26 stops driving the volume blocks 25, the first driving device 23 will start, and the first driving device 23 drives the first gear 223 to rotate. Since the first gear 223 is provided through the second blade 22 2 meshes with the second blade 222, so that after the first gear 223 rotates, the second blade 222 will slide along the extension direction of the first gear 223 driven by the first gear 223. After the second blade 222 extends, the total length of the blade changes, and the actual diameter of the pump body will also increase. In this way, under the joint guidance of the first blade 221 and the second blade 222, the vacuum area near the rotating shaft 22 will also become larger, so that the water inlet at the water inlet can be increased under the suction of the vacuum, thereby increasing the water inlet, so that the device can protect the motor from damage while improving the delivery flow.

[0041] Reference Figure 2 、 Figure 4 、 Figure 5 and Figure 7: The speed monitoring device 24 includes a first transmission component 241, a rotating disk 242, a conductive ring 243, a contact member 244, a spring 245 and an adapter 246; the first transmission component 241 is arranged on the rotating shaft 22; the rotating disk 242 is arranged on the side of the first transmission component 241 away from the rotating shaft 22, and the rotating shaft 22 drives the rotating disk 242 to rotate through the first transmission component 241, and the side wall of the rotating disk 242 is provided with multiple conductive grooves; the conductive ring 243 is arranged on the periphery of the rotating disk 242 along the axis of the rotating disk 242; the contact member 244 is slidably arranged in the conductive groove, and there is a first gap between the contact member 244 and the bottom of the conductive groove; the spring 245 is arranged in the first gap; the adapter 246 is arranged on the upper part of the rotating disk 242 along the axis of the rotating disk 242, the adapter 246 rotates with the rotating disk 242, and the adapter 246 can be electrically connected to the conductive ring 243 through the contact member 244.

[0042] After the rotating shaft 22 is driven to rotate by the first rotary driver 21, the first transmission assembly 241 drives the rotating disk 242 to rotate. As the rotating disk 242 rotates, the contact member 244 set in the conductive groove is thrown out under the action of centrifugal force. The two ends of the spring 245 are fixedly connected to the bottom of the conductive groove and the contact member 244 respectively. The spring 245 set in the first gap is in a stretched state. When the speed of the rotating shaft 22 reaches a specified value, the contact member 244 will overcome the pulling force of the spring 245 and be completely thrown out. The end of the contact member 244 away from the conductive groove contacts the conductive ring 243, so that the adapter 246 can be electrically connected to the conductive ring 243 through the contact member 244, and the speed monitoring device 24 starts the second driving device 26 through the controller.

[0043] Reference Figure 5 and Figure 8 : The first transmission assembly 241 includes a first bevel gear 2411, a second bevel gear 2412, a third gear 2413 and a fourth gear 2414; the first bevel gear 2411 is fixedly arranged on the rotating shaft 22 along the axis of the rotating shaft 22; the second bevel gear 2412 is arranged on one side of the first bevel gear 2411, and the second bevel gear 2412 and the first bevel gear 2411 are meshed with each other; the third gear 2413 is fixedly arranged on the upper part of the second bevel gear 2412; the fourth gear 2414 is arranged on one side of the third gear 2413, the third gear 2413 and the fourth gear 2414 are meshed with each other, and the fourth gear 2414 is fixedly connected to the rotating disk 242.

[0044] When the rotating shaft 22 rotates, since the first bevel gear 2411 is fixedly set on the rotating shaft 22, the first bevel gear 2411 will be driven by the rotating shaft 22 to rotate synchronously. Since the first bevel gear 2411 and the second bevel gear 2412 are engaged with each other, after the first bevel gear 2411 rotates, the second bevel gear 2412 drives the fourth gear 2414 to rotate through the third gear 2413 fixedly set on its upper part. Since the fourth gear 2414 is fixedly connected to the rotating disk 242, the rotating disk 242 can be driven to rotate.

[0045] Reference Figure 8 and Figure 9 : The first driving device 23 includes a second rotation driver 231, a second gear 232, a second transmission assembly 233 and an annular plate 234; the annular plate 234 is arranged on one side of the first gear 223 along the axis of the rotating shaft 22; the second transmission assembly 233 is arranged on the side of the annular plate 234 away from the first gear 223; the second gear 232 is arranged on one side of the second transmission assembly 233; the second rotation driver 231 is fixedly arranged on one side of the second gear 232, the second rotation driver 231 can drive the second gear 232 to rotate, and the second gear 232 drives the first gear 223 to rotate through the second transmission assembly 233.

[0046] The second rotation driver 231 is preferably a servo motor. When the second rotation driver 231 is started, the second gear 232 arranged on the output end of the second rotation driver 231 is driven to rotate. Since the second gear 232 can drive the first gear 223 to rotate through the second transmission assembly 233, the first gear 223 will be driven to rotate by the second gear 232. The annular plate 234 is provided to ensure that when the rotating shaft 22 rotates, the second gear 232 can rotate together with the annular plate 234, ensuring that the first gear 223 can be normally driven by the second gear 232.

[0047] Reference Figure 8 and Figure 9 : The second transmission assembly 233 includes a gear ring 2331 and a fifth gear 2332; the gear ring 2331 is rotatable around the axis of the rotating shaft 22 and is arranged on the side of the annular plate 234 away from the first gear 223, the second gear 232 is located in the ring of the gear ring 2331, and the second gear 232 and the gear ring 2331 are engaged with each other; the fifth gear 2332 is arranged on the outer ring side of the gear ring 2331, the fifth gear 2332 and the gear ring 2331 are engaged with each other, and the fifth gear 2332 is fixedly connected to the first gear 223.

[0048] After the second rotary driver 231 drives the second gear 232 to rotate, since the second gear 232 is engaged with the inner ring of the gear ring 2331, the second gear 232 can drive the gear ring 2331 to rotate. At the same time, the outer ring of the gear ring 2331 is engaged with the fifth gear 2332. In this way, the fifth gear 2332 is also driven to rotate by the gear ring 2331, and the first gear 223 arranged on the side of the fifth gear 2332 is also driven to rotate by the fifth gear 2332.

[0049] Reference Figure 11 : The centrifugal device 2 further includes a limit block 224; the limit block 224 is arranged on a side of the second blade 222 away from the first blade 221.

[0050] Since the first gear 223 exerts a thrust on the second blade 222 , the limit block 224 is required to limit the second blade 222 . If the limit block 224 is not provided, when the first gear 223 rotates, the second blade 222 will not be driven to rotate by the first gear 223 .

[0051] Reference Figure 2 and Figure 3 : The second driving device 26 includes a third rotation driver 261, a screw rod 262, a slider 263 and a sliding seat 264; the slider 263 is fixedly arranged at the lower part of the volume block 25; the sliding seat 264 is arranged at the lower part of the slider 263, and the slider 263 slides with the sliding seat 264; the screw rod 262 is arranged on the sliding seat 264 along the axis of the shell 1, the screw rod 262 passes through the slider 263, the screw rod 262 is threadedly engaged with the slider 263, and the threads on both sides of the screw rod 262 rotate in opposite directions; the third rotation driver 261 is arranged on one side of the screw rod 262, and the third rotation driver 261 is used to drive the screw rod 262 to rotate.

[0052] The third rotation driver 261 is preferably a servo motor. When the third rotation driver 261 is started, the third rotation driver 261 drives the screw rod 262 to rotate, so that the two sliders 263 provided on the screw rod 262 can move closer to or away from each other. This is because the threads on both sides of the screw rod 262 rotate in different directions, and the sliding seat 264 provided at the bottom of the slider 263 has a supporting function for the slider 263.

[0053] Reference Figure 2 and Figure 3 : The second driving device 26 also includes a pressure sensor; there are two pressure sensors, which are symmetrically arranged on both side walls of the inner side of the sliding seat 264.

[0054] When the third rotary driver 261 drives the slider 263 to move through the screw rod 262, the slider 263 will inevitably come into contact with the inner side wall of the sliding seat 264, thereby activating the pressure sensor provided on the inner side wall of the sliding seat 264. The pressure sensor stops the third rotary driver 261 through the controller.

[0055] Reference Figure 2 and Figure 3 The second driving device 26 further includes a guide rod 265; the guide rod 265 is disposed on the sliding seat 264 on one side of the screw rod 262 along the axial direction of the screw rod 262, and the guide rod 265 slides with the slider 263.

[0056] The guide rod 265 ensures that the slider 263 slides stably on the sliding seat 264 .

[0057] Reference Figure 3 and Figure 4 : The centrifugal device 2 further includes a connecting shell 27; the connecting shell 27 is disposed on one side of the housing 1, and the connecting shell 27 is used to connect the side wall of the housing 27 body 1.

[0058] Since the annular plate 234 is provided, the annular plate 234 divides the side wall of the shell 1 into two parts. However, when the annular plate 234 rotates, the shell 1 does not rotate at all. Therefore, it is necessary to connect the separated parts of the shell 1 together through the connecting shell 27.

[0059] The above embodiments merely represent one or several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A high energy efficiency centrifugal pump comprising a housing (1) and a centrifugal device (2); It is characterized in that The centrifugal device (2) includes a first rotary driver (21), a rotating shaft (22), a first blade (221), a second blade (222), a first gear (223), a first driving device (23), a rotation speed monitoring device (24), a volume block (25) and a second driving device (26); The housing (1) is a circular structure, the first rotary driver (21) is arranged on one side of the housing (1), and the output end of the first rotary driver (21) points toward the housing (1); The rotating shaft (22) is fixedly arranged on the output end of the first rotating driver (21); A plurality of first blades (221) are provided, and the plurality of first blades (221) are fixedly arranged on the rotating shaft (22) around the axis of the rotating shaft (22); The second blade (222) is slidably arranged on one side of the first blade (221) along the extension direction of the first blade (221); The first gear (223) is rotatably arranged on the first blade (221) along the width direction of the first blade (221); meshing teeth are evenly provided on a side of the second blade (222) close to the first blade (221); the first gear (223) meshes with the meshing teeth; The first driving device (23) is arranged on one side of the first gear (223), and the first driving device (23) is used to drive the first gear (223) to rotate; A rotation speed monitoring device (24) is provided on the rotating shaft (22), and the rotation speed monitoring device (24) is used to monitor the rotation speed of the rotating shaft (22). A controller is provided on the housing (1); Two volume blocks (25) are provided, and the volume blocks (25) are annular in structure. The two volume blocks (25) are symmetrically arranged on both sides of the shell (1) along the axis of the shell (1), and the volume blocks (25) can be slidably matched with the shell (1); The second driving device (26) is arranged below the volume block (25). The second driving device (26) is used to drive the two volume blocks (25) to move closer to or farther from each other. The speed monitoring device (24) controls the second driving device (26) through a controller.

2. A high energy efficiency centrifugal pump according to claim 1, characterized in that: The rotation speed monitoring device (24) includes a first transmission component (241), a rotating disk (242), a conductive ring (243), a contact member (244), a spring (245) and an adapter (246); The first transmission assembly (241) is arranged on the rotating shaft (22); The rotating disk (242) is arranged on a side of the first transmission assembly (241) away from the rotating shaft (22), and the rotating shaft (22) drives the rotating disk (242) to rotate through the first transmission assembly (241). A plurality of conductive slots are arranged on the side wall of the rotating disk (242); The conductive ring (243) is arranged on the periphery of the rotating disk (242) along the axis of the rotating disk (242); The contact member (244) is slidably disposed in the conductive slot, and a first gap exists between the contact member (244) and the bottom of the conductive slot; A spring (245) is disposed in the first gap; The adapter (246) is arranged on the upper part of the rotating disk (242) along the axis of the rotating disk (242). The adapter (246) and the rotating disk (242) are rotatably matched. The adapter (246) can be electrically connected to the conductive ring (243) through the contact piece (244).

3. A high energy efficiency centrifugal pump according to claim 2, characterized in that: The first transmission assembly (241) includes a first bevel gear (2411), a second bevel gear (2412), a third gear (2413) and a fourth gear (2414); The first bevel gear (2411) is fixedly arranged on the rotating shaft (22) along the axis of the rotating shaft (22); The second bevel gear (2412) is arranged on one side of the first bevel gear (2411), and the second bevel gear (2412) and the first bevel gear (2411) are meshed with each other; The third gear (2413) is fixedly arranged on the upper part of the second bevel gear (2412); The fourth gear (2414) is arranged on one side of the third gear (2413), the third gear (2413) and the fourth gear (2414) are meshed with each other, and the fourth gear (2414) is fixedly connected to the rotating disk (242).

4. A high energy efficiency centrifugal pump according to claim 1, characterized in that: The first driving device (23) includes a second rotary driver (231), a second gear (232), a second transmission assembly (233) and an annular plate (234); The annular plate (234) is arranged on one side of the first gear (223) along the axis of the rotating shaft (22); The second transmission assembly (233) is arranged on a side of the annular plate (234) away from the first gear (223); The second gear (232) is arranged on one side of the second transmission assembly (233); The second rotary driver (231) is fixedly arranged on one side of the second gear (232). The second rotary driver (231) can drive the second gear (232) to rotate. The second gear (232) drives the first gear (223) to rotate through the second transmission assembly (233).

5. The high energy efficiency centrifugal pump according to claim 4, characterized in that: The second transmission assembly (233) includes a gear ring (2331) and a fifth gear (2332); The gear ring (2331) is rotatably arranged around the axis of the rotating shaft (22) on a side of the annular plate (234) away from the first gear (223), and the second gear (232) is located inside the gear ring (2331). The second gear (232) and the gear ring (2331) are meshed with each other. The fifth gear (2332) is arranged on the outer ring side of the gear ring (2331), the fifth gear (2332) and the gear ring (2331) are meshed with each other, and the fifth gear (2332) is fixedly connected to the first gear (223).

6. The high energy efficiency centrifugal pump according to claim 1, characterized in that: The centrifugal device (2) further includes a limiting block (224); The limiting block (224) is arranged on a side of the second blade (222) away from the first blade (221).

7. The high energy efficiency centrifugal pump according to claim 1, characterized in that: The second driving device (26) includes a third rotary driver (261), a screw rod (262), a slider (263) and a sliding seat (264); The slider (263) is fixedly arranged at the lower part of the volume block (25); The sliding seat (264) is arranged at the lower part of the slider (263), and the slider (263) and the sliding seat (264) are slidably matched; The screw rod (262) is arranged on the sliding seat (264) along the axis of the housing (1), and the screw rod (262) passes through the slider (263). The screw rod (262) and the slider (263) are threadedly matched, and the threads on both sides of the screw rod (262) rotate in opposite directions. The third rotary driver (261) is arranged on one side of the screw rod (262), and the third rotary driver (261) is used to drive the screw rod (262) to rotate.

8. The high energy efficiency centrifugal pump according to claim 1, characterized in that: The second driving device (26) further includes a pressure sensor; Two pressure sensors are provided, and the two pressure sensors are symmetrically arranged on the two side walls on the inner side of the sliding seat (264).

9. The high energy efficiency centrifugal pump according to claim 7, characterized in that: The second driving device (26) further includes a guide rod (265); The guide rod (265) is arranged on a sliding seat (264) on one side of the screw rod (262) along the axial direction of the screw rod (262), and the guide rod (265) is slidably matched with the slider (263).

10. The high energy efficiency centrifugal pump according to claim 4, characterized in that: The centrifugal device (2) further comprises a connecting shell (27); The connecting shell (27) is arranged on one side of the housing (1), and the connecting shell (27) is used to connect the side wall of the housing (27) body (1).

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