CN117780653B - Marine low-vibration centrifugal pump - Google Patents
Marine low-vibration centrifugal pump Download PDFInfo
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- CN117780653B CN117780653B CN202410199450.1A CN202410199450A CN117780653B CN 117780653 B CN117780653 B CN 117780653B CN 202410199450 A CN202410199450 A CN 202410199450A CN 117780653 B CN117780653 B CN 117780653B
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- 238000013016 damping Methods 0.000 claims abstract description 36
- 230000007704 transition Effects 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000001125 extrusion Methods 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 17
- 230000009467 reduction Effects 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 description 23
- 239000012530 fluid Substances 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 230000009471 action Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 230000035939 shock Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention discloses a marine low-vibration centrifugal pump, which relates to the technical field of centrifugal pumps and comprises a driving motor, a connecting component, a pump body, an input pipe, an output pipe, an impeller component and a damping component, wherein the driving motor is in fastening connection with the damping component, the pump body is in fastening connection with the damping component, the damping component is in fastening connection with the ground of a ship body, one end of the connecting component is in fastening connection with the driving motor, the other end of the connecting component is in fastening connection with the pump body, one side, far away from the connecting component, of the input pipe is in fastening connection with the side edge of the pump body, the impeller component is arranged in the pump body, the impeller component is in rotating connection with the pump body, and the impeller component is in fastening connection with the connecting component. In the vibration process, the friction block and the side edge of the damping cavity are repeatedly rubbed, friction heat is guided to the radiating plate by the heat conducting strips to be radiated, the structure greatly improves the consumption rate of vibration energy, and the vibration reduction of the centrifugal pump is achieved.
Description
Technical Field
The invention relates to the technical field of centrifugal pumps, in particular to a low-vibration centrifugal pump for a ship.
Background
Centrifugal pumps are a type of mechanical device commonly used for liquid delivery and operate on the principle that liquid is drawn in from an inlet by centrifugal force of a rotating impeller and then pushed to an outlet by centrifugal force and guidance of an outlet pipe. Because of the characteristics of large flow, convenient use and the like of the centrifugal pump, the centrifugal pump is widely applied to the fields of industrial production, urban water supply, air conditioning circulation and the like. However, the existing centrifugal pump for the ship has partial defects and cannot meet the use requirements.
The conventional centrifugal pump for the ship has larger vibration in the use process, and the ship body can frequently vibrate, so that the service life of the centrifugal pump can be greatly reduced under the combined action of the centrifugal pump and the ship body. On the other hand, in the stop working process of the centrifugal pump, water in the pipeline can generate a water hammer phenomenon, so that structural impact is caused on the centrifugal pump, and the service life of the centrifugal pump is influenced.
The power source of the centrifugal pump is generally a motor, when a blockage occurs in a pipeline of the centrifugal pump, the centrifugal pump is easy to suddenly stop, the sudden stop of the centrifugal pump can cause synchronous sudden stop of the motor, and the sudden stop can have adverse effects on the service life, the running precision and the like of the motor.
Disclosure of Invention
The invention aims to provide a low-vibration centrifugal pump for a ship, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a marine low vibration's centrifugal pump, including driving motor, coupling assembling, the pump body, the input tube, the output tube, impeller subassembly, damper, driving motor and damper fastening connection, pump body and damper fastening connection, damper and hull ground fastening connection, coupling assembling one end and driving motor fastening connection, the coupling assembling other end and pump body fastening connection, one side fastening connection of coupling assembling is kept away from to the input tube and the pump body, output tube and pump body side fastening connection, impeller subassembly sets up inside the pump body, impeller subassembly and pump body rotate to be connected, impeller subassembly and coupling assembling fastening connection. The driving motor drives the connecting component to work, the connecting component transmits torque to the impeller component, the impeller component runs to drive fluid to enter the pump body from the input pipe, and the fluid leaves the pump body from the output pipe, so that vibration transmission in the working process is reduced by the damping component. When the impeller component encounters a blockage and causes sudden stop, the adjusting unit can generate larger speed difference with the second friction disk, at the moment, the adjusting unit can generate larger pressure effect on the arc-shaped spring, the arc-shaped spring is compressed, the adjusting unit can extend out of the extending hole when moving to the extending hole position, and the severe friction between the first friction disk and the second friction disk is stopped.
Further, coupling assembling includes the connecting pipe, first friction disc, the second friction disc, the transition axle, supporting spring, annular ring, connecting pipe one end and driving motor fastening connection, the connecting pipe other end and pump body fastening connection, the output shaft fastening connection of first friction disc and driving motor, first friction disc and connecting pipe rotate to be connected, one side that the first friction disc was kept away from to the second friction disc is provided with the sliding tray, sliding tray and the transition axle sliding connection that set up on the second friction disc, the one end and the impeller subassembly fastening connection of second friction disc are kept away from to the transition axle, annular ring and transition axle fastening connection, supporting spring cover is epaxial at the transition, supporting spring one end and annular ring fastening connection, the supporting spring other end and second friction disc fastening connection. The output shaft of the driving motor drives the first friction disc to rotate, the first friction disc drives the second friction disc to rotate, the second friction disc drives the transition shaft to rotate, and the supporting spring extrudes the second friction disc, so that the second friction disc is clung to the surface of the first friction disc, and further transmission is realized.
Further, the inside arc wall that is provided with of second friction disc, the arc wall is provided with the multiunit, multiunit arc wall is around second friction disc center evenly distributed, arc wall center department is provided with stretches out the hole, stretch out hole one end and arc wall intercommunication, stretch out the surface that the hole other end extends to second friction disc one side near first friction disc, the inside regulating unit that is provided with of arc wall, arc spring, regulating unit and arc wall sliding connection, arc spring one end and regulating unit fastening connection, arc spring other end and arc wall fastening connection. In the normal rotation process, the acceleration and deceleration processes of the impeller assembly are gradual, in the process, the acceleration effect born by the adjusting unit is small, the deformation amount generated by the arc-shaped spring is relatively small, and the adjusting unit can rotate along with the second friction disc. When the impeller component encounters a blockage and causes sudden stop, the adjusting unit can generate larger speed difference with the second friction disk, at the moment, the adjusting unit can generate larger pressure effect on the arc-shaped spring, the arc-shaped spring is compressed, the adjusting unit can extend out of the extending hole when moving to the extending hole position, and the severe friction between the first friction disk and the second friction disk is stopped.
Further, the adjusting unit comprises a pressure sleeve, a pressure rod, a rolling wheel and a reset spring, wherein the pressure sleeve is embedded into the second friction disc, the pressure rod is in sliding connection with the pressure sleeve, the rolling wheel is in rotary connection with one side, far away from the pressure sleeve, of the pressure rod, one end of the reset spring is in fastening connection with the inner wall of the pressure sleeve, and the other end of the reset spring is in fastening connection with the pressure rod. The pressure sleeve and the pressure rod directly form a sealed space, the pressure rod is pulled by the reset spring, the pressure rod is in the range of the pressure sleeve, the pressure sleeve and the pressure rod are propped in the arc-shaped groove by the arc-shaped spring, the pressure rod cannot extend out of the pressure sleeve at the moment, the pressure sleeve is provided with a pressure regulating port and a second friction disc for external communication, the pressure is higher than the pressure of the supporting spring by injecting compressed gas to the sealing area between the pressure sleeve and the pressure rod, the pressure rod can pop out under the action of the gas pressure when the pressure sleeve moves to the position of the extending hole, the second friction disc is propped up from the surface of the first friction disc, the first friction disc continues to rotate at the moment, the rolling wheel rolls along with the pressure sleeve, excessive resistance is not generated, and the driving motor can perform speed reduction and stop in a normal mode. After the fault treatment is finished, the air pressure in the pressure sleeve is removed, the pressure sleeve can be automatically reset, and then compressed air is filled again to be used again.
Further, the impeller assembly comprises a bearing cone, an impeller disc, a transmission shaft and a buffer unit, wherein the bearing cone is in sliding connection with one side of the impeller disc, the transmission shaft is in fastening connection with one side of the impeller disc away from the bearing cone, one end of the buffer unit is in fastening connection with the impeller disc, the other end of the buffer unit is in fastening connection with the bearing cone, the bearing cone covers the buffer unit, and the transmission shaft is in fastening connection with the transition shaft. The transition shaft drives the transmission shaft to rotate, the transmission shaft drives the impeller disc to rotate, the impeller disc drives the receiving cone to rotate, fluid impacts the receiving cone after entering the pump body, the receiving cone tip guides the fluid, and most impact force of the fluid is removed.
Further, the buffer unit comprises a connecting disc, an extrusion spring and a blocking ring, one side, close to the impeller disc, of the bearing cone is provided with a mounting groove, the connecting disc is in fastening connection with the mounting groove, one end of the extrusion spring is in fastening connection with the connecting disc, the other end of the extrusion spring is in fastening connection with the impeller disc, the blocking ring is sleeved outside the extrusion spring, the blocking ring and the connecting disc are concentrically arranged, mounting holes are formed in the side edges of the connecting disc, blocking strips and pulling springs are arranged in the mounting holes, the mounting holes are provided with a plurality of groups, the mounting holes are uniformly distributed around the connecting disc, the blocking strips are in sliding connection with the mounting holes, one end of the pulling spring is in fastening connection with the blocking strips, and the other end of the pulling spring is in fastening connection with the mounting holes. In the process of rotating the receiving cone, the connecting disc also rotates along with the connecting disc, the blocking strip can move outwards under the centrifugal action, the spring is pulled to pull the blocking strip, the blocking strip stretches out of the mounting hole and then is blocked by the blocking ring, the receiving cone cannot move under the action of fluid, and the extrusion spring is relatively stable. According to the invention, when the impeller plate stops rotating, the blocking strip can be retracted into the mounting hole, the receiving cone is in a movable state at the moment, and because the impeller plate stops, a water hammer effect can be generated on one side of the input pipe, at the moment, the water body is impacted on the receiving cone, the receiving cone compresses the extrusion spring to buffer the water body, and the position of the receiving cone is kept stable during normal rotation, so that the pumping water is more stable.
Further, the damper comprises two groups of damper cavities and damper units, wherein one group of damper cavities is fixedly connected with the driving motor, the other group of damper cavities is fixedly connected with the pump body, the damper cavities are arranged inside the damper cavities, the damper cavities are uniformly distributed inside the damper cavities, one end of each damper unit is arranged inside the damper cavity, and the other end of each damper unit is connected with the damper base. In the working process of the centrifugal pump, vibration is transmitted to the mounting seat to drive the damping unit to work, and the damping unit rapidly consumes vibration energy to reduce vibration frequency.
Further, the damping unit comprises a friction block, a heat conducting strip and a heat radiating plate, the friction block is in sliding connection with the damping cavity, friction particles are arranged on the surface of the friction block, one end of the heat conducting strip is in fastening connection with the damping cavity, the other end of the heat conducting strip is in fastening connection with the heat radiating plate, and the heat radiating plate is in fastening connection with the side edge of the mounting seat. In the vibration process, the friction block and the side edge of the damping cavity are repeatedly rubbed, friction heat is guided to the radiating plate by the heat conducting strips to be radiated, the structure greatly improves the consumption rate of vibration energy, and the vibration reduction of the centrifugal pump is achieved.
Compared with the prior art, the invention has the following beneficial effects: when the impeller component encounters a blockage and causes sudden stop, the adjusting unit can generate larger speed difference with the second friction disk, at the moment, the adjusting unit can generate larger pressure effect on the arc-shaped spring, the arc-shaped spring is compressed, the adjusting unit can extend out of the extending hole when moving to the extending hole position, and the severe friction between the first friction disk and the second friction disk is stopped. According to the invention, when the impeller plate stops rotating, the blocking strip can be retracted into the mounting hole, the receiving cone is in a movable state at the moment, and because the impeller plate stops, a water hammer effect can be generated on one side of the input pipe, at the moment, the water body is impacted on the receiving cone, the receiving cone compresses the extrusion spring to buffer the water body, and the position of the receiving cone is kept stable during normal rotation, so that the pumping water is more stable. In the vibration process, the friction block and the side edge of the damping cavity are repeatedly rubbed, friction heat is guided to the radiating plate by the heat conducting strips to be radiated, the structure greatly improves the consumption rate of vibration energy, and the vibration reduction of the centrifugal pump is achieved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic perspective view of a first orientation of the present invention;
FIG. 2 is a schematic view of a second azimuth perspective of the present invention;
FIG. 3 is a schematic perspective view of an impeller assembly of the present invention;
FIG. 4 is a cross-sectional view of an impeller assembly of the present invention;
FIG. 5 is a partial cross-sectional view of a cushioning unit of the present invention;
FIG. 6 is a cross-sectional view of the connection assembly of the present invention;
FIG. 7 is a schematic view of the internal structure of a second friction disk of the present invention;
FIG. 8 is a schematic view of the internal structure of the shock absorbing assembly of the present invention;
In the figure: 1-driving motor, 2-connecting component, 21-connecting pipe, 22-first friction disk, 23-second friction disk, 24-transition shaft, 25-supporting spring, 26-annular ring, 27-arc groove, 28-extension hole, 29-adjusting unit, 291-pressure jacket, 292-pressure rod, 293-rolling wheel, 294-return spring, 3-pump body, 4-input pipe, 5-output pipe, 6-impeller component, 61-receiving cone, 62-impeller disk, 63-transmission shaft, 64-buffer unit, 641-connecting disk, 642-pressing spring, 643-blocking ring, 644-mounting hole, 645-blocking strip, 646-pulling spring, 7-damping component, 71-mounting seat, 72-damping cavity, 73-damping unit, 731-friction block, 732-heat conducting strip, 733-heat radiating plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in figures 1 and 2, the marine low-vibration centrifugal pump comprises a driving motor 1, a connecting component 2, a pump body 3, an input pipe 4, an output pipe 5, an impeller component 6 and a shock absorption component 7, wherein the driving motor 1 is in fastening connection with the shock absorption component 7, the pump body 3 is in fastening connection with the shock absorption component 7, the shock absorption component 7 is in fastening connection with the hull ground, one end of the connecting component 2 is in fastening connection with the driving motor 1, the other end of the connecting component 2 is in fastening connection with the pump body 3, the input pipe 4 is in fastening connection with one side of the pump body 3, which is far away from the connecting component 2, the output pipe 5 is in fastening connection with the side of the pump body 3, the impeller component 6 is arranged inside the pump body 3, the impeller component 6 is in rotating connection with the pump body 3, and the impeller component 6 is in fastening connection with the connecting component 2. The driving motor 1 drives the connecting component 2 to work, the connecting component 2 transmits torque to the impeller component 6, the impeller component 6 runs to drive fluid to enter the pump body 3 from the input pipe 4, and leave the pump body 3 from the output pipe 5, and the shock absorption component 7 reduces shock transmission in the working process. When the impeller assembly 6 encounters a blockage and causes sudden stop, the adjusting unit 29 of the invention can generate larger speed difference with the second friction disc 23, at the moment, the adjusting unit 29 can generate larger pressure action on the arc spring, the arc spring is compressed, the adjusting unit 29 can extend out of the extending hole when moving to the extending hole position, and the severe friction between the first friction disc 22 and the second friction disc 23 is stopped, so that the service life of the driving motor 1 is greatly prolonged, and the adverse effect of the sudden stop of the impeller assembly 6 on the driving motor 1 is avoided.
As shown in fig. 6 and 7, the connecting assembly 2 comprises a connecting pipe 21, a first friction disk 22, a second friction disk 23, a transition shaft 24, a supporting spring 25 and an annular ring 26, one end of the connecting pipe 21 is in fastening connection with the driving motor 1, the other end of the connecting pipe 21 is in fastening connection with the pump body 3, the first friction disk 22 is in fastening connection with an output shaft of the driving motor 1, the first friction disk 22 is rotationally connected with the connecting pipe 21, a sliding groove is formed in one side, far away from the first friction disk 22, of the second friction disk 23, the sliding groove formed in the second friction disk 23 is in sliding connection with the transition shaft 24, one end, far away from the second friction disk 23, of the transition shaft 24 is in fastening connection with the impeller assembly 6, the annular ring 26 is in fastening connection with the transition shaft 24, the supporting spring 25 is sleeved on the transition shaft 24, one end of the supporting spring 25 is in fastening connection with the annular ring 26, and the other end of the supporting spring 25 is in fastening connection with the second friction disk 23. The output shaft of the driving motor 1 drives the first friction disc 22 to rotate, the first friction disc 22 drives the second friction disc 23 to rotate, the second friction disc 23 drives the transition shaft 24 to rotate, and the supporting spring 25 extrudes the second friction disc 23, so that the second friction disc 23 is tightly attached to the surface of the first friction disc 22, and further transmission is realized.
As shown in fig. 6 and 7, the second friction disc 23 is internally provided with arc grooves 27, the arc grooves 27 are provided with a plurality of groups, the arc grooves 27 are uniformly distributed around the center of the second friction disc 23, an extending hole 28 is formed in the center of the arc groove 27, one end of the extending hole 28 is communicated with the arc groove 27, the other end of the extending hole 28 extends to the surface, close to the first friction disc 22, of the second friction disc 23, the arc groove 27 is internally provided with an adjusting unit 29 and an arc spring, the adjusting unit 29 is in sliding connection with the arc groove 27, one end of the arc spring is in fastening connection with the adjusting unit 29, and the other end of the arc spring is in fastening connection with the side wall of the arc groove 27. During normal rotation, the acceleration and deceleration of the impeller assembly 6 is gradual, and during this process, the acceleration acting on the adjusting unit 29 is small, the deformation generated by the arc-shaped spring is relatively small, and the adjusting unit 29 rotates along with the second friction disc 23. When the impeller assembly 6 encounters a blockage and causes sudden stop, the adjusting unit 29 of the invention can generate larger speed difference with the second friction disc 23, at the moment, the adjusting unit 29 can generate larger pressure action on the arc spring, the arc spring is compressed, the adjusting unit 29 can extend out of the extending hole when moving to the extending hole position, and the severe friction between the first friction disc 22 and the second friction disc 23 is stopped, so that the service life of the driving motor 1 is greatly prolonged, and the adverse effect of the sudden stop of the impeller assembly 6 on the driving motor 1 is avoided.
As shown in fig. 6 and 7, the adjusting unit 29 includes a pressure sleeve 291, a pressure rod 292, a rolling wheel 293, and a return spring 294, wherein the pressure sleeve 291 is embedded into the second friction disc 23, the pressure rod 292 is slidably connected with the pressure sleeve 291, the rolling wheel 293 is rotatably connected with one side of the pressure rod 292 away from the pressure sleeve 291, one end of the return spring 294 is fixedly connected with the inner wall of the pressure sleeve 291, and the other end of the return spring 294 is fixedly connected with the pressure rod 292. The pressure sleeve 291 and the pressure rod 292 directly form a sealed space, the pressure rod 292 is pulled by the reset spring 294, the pressure rod 292 is located in the range of the pressure sleeve 291, the pressure sleeve 291 and the pressure rod 292 are propped in the arc-shaped groove by the arc-shaped spring, the pressure rod 292 cannot extend out of the pressure sleeve 291 at the moment, the pressure sleeve 291 is provided with a pressure regulating port and is communicated with the outside of the second friction disc 23, the sealing area between the pressure sleeve 291 and the pressure rod 292 can be pressurized by injecting compressed gas, the pressure is larger than the pressure of the supporting spring, when the pressure sleeve 291 moves to the position of the extending hole, the pressure rod 292 can be popped up under the action of the gas pressure, the second friction disc 23 can be propped up from the surface of the first friction disc 22, the first friction disc 22 continues to rotate at the moment, the rolling wheel 293 rolls along with the pressure sleeve, excessive resistance cannot be generated, and the driving motor 1 can be decelerated and stopped in a normal mode. After the fault is handled, the air pressure in the pressure jacket 291 is removed, the pressure jacket 291 is automatically reset, and then compressed air is again filled for reuse.
As shown in fig. 3 and 4, the impeller assembly 6 includes a receiving cone 61, an impeller plate 62, a transmission shaft 63, and a buffer unit 64, the receiving cone 61 is slidably connected to one side of the impeller plate 62, the transmission shaft 63 is fixedly connected to one side of the impeller plate 62 away from the receiving cone 61, one end of the buffer unit 64 is fixedly connected to the impeller plate 62, the other end of the buffer unit 64 is fixedly connected to the receiving cone 61, the receiving cone 61 covers the buffer unit 64, and the transmission shaft 63 is fixedly connected to the transition shaft 24. The transition shaft 24 drives the transmission shaft 63 to rotate, the transmission shaft 63 drives the impeller disc 62 to rotate, the impeller disc 62 drives the receiving cone 61 to rotate, fluid is impacted with the receiving cone 61 after entering the pump body, the tip of the receiving cone 61 guides the fluid, and most impact force of the fluid is removed.
As shown in fig. 3, 4 and 5, the buffer unit 64 includes a connection disc 641, a compression spring 642 and a blocking ring 643, a mounting groove is arranged on one side of the receiving cone 61, which is close to the impeller disc 62, the connection disc 641 is in fastening connection with the mounting groove, one end of the compression spring 642 is in fastening connection with the connection disc 641, the other end of the compression spring 642 is in fastening connection with the impeller disc 62, the blocking ring 643 is sleeved outside the compression spring 642, the blocking ring 643 and the connection disc 641 are concentrically arranged, a mounting hole 644 is arranged on the side edge of the connection disc 641, a blocking strip 645 and a pulling spring 646 are arranged in the mounting hole 644, a plurality of groups of mounting holes 644 are uniformly distributed around the connection disc 641, the blocking strip 645 is in sliding connection with the mounting hole 644, one end of the pulling spring 646 is in fastening connection with the blocking strip 645, and the other end of the pulling spring 646 is in fastening connection with the mounting hole 644. During the rotation of the receiving cone 61, the connection disc 641 also rotates, the blocking strip 645 moves outwards due to the centrifugal effect, the pulling spring 646 pulls the blocking strip 645, the blocking strip 645 is blocked by the blocking ring 643 after extending out of the mounting hole, the receiving cone 61 cannot move due to the action of fluid, and the pressing spring 642 remains relatively stable. According to the invention, when the impeller plate 62 stops rotating, the blocking strip 645 is retracted into the mounting hole 644, the receiving cone 61 is in a movable state at the moment, a water hammer effect is generated on one side of the input pipe 4 due to the stop of the impeller plate 62, at the moment, a water body is impacted on the receiving cone 61, the receiving cone 61 compresses the compression spring 642 to buffer the water body, and the position of the receiving cone 61 is kept stable during normal rotation, so that water pumping is stable.
As shown in fig. 8, the damper assembly 7 includes a mount 71, a damper chamber 72, and a damper unit 73, the mount 71 is provided with two sets, one set of mount 71 is fastened to the driving motor 1, the other set of mount 71 is fastened to the pump body 3, the damper chamber 72 is disposed inside the mount 71, the damper chamber 72 is provided with multiple sets, the damper chambers 72 are uniformly distributed inside the mount 71, one end of the damper unit 73 is disposed inside the damper chamber 72, and the other end of the damper unit 73 is connected to the mount 71. In the working process of the centrifugal pump, vibration is transmitted to the mounting seat 71 to drive the damping unit 73 to work, and the damping unit 73 rapidly consumes vibration energy to reduce vibration frequency.
As shown in fig. 8, the damper unit 73 includes a friction block 731, a heat conducting bar 732, a heat dissipating plate 733, the friction block 731 and the damper 72 are slidably connected, friction particles are disposed on the surface of the friction block 731, one end of the heat conducting bar 732 is fixedly connected to the damper 72, the other end of the heat conducting bar 732 is fixedly connected to the heat dissipating plate 733, and the heat dissipating plate 733 is fixedly connected to the side of the mounting base 71. In the vibration process, the friction block 731 and the side edge of the damping cavity 72 are repeatedly rubbed, friction heat is guided to the radiating plate 733 by the heat conducting strips 732 to be radiated, the consumption rate of vibration energy is greatly improved, and positive effects are achieved on vibration reduction of the centrifugal pump.
The working principle of the invention is as follows: the output shaft of the driving motor 1 drives the first friction disc 22 to rotate, the first friction disc 22 drives the second friction disc 23 to rotate, the second friction disc 23 drives the transition shaft 24 to rotate, and the supporting spring 25 extrudes the second friction disc 23, so that the second friction disc 23 is tightly attached to the surface of the first friction disc 22, and further transmission is realized. The transition shaft 24 drives the transmission shaft 63 to rotate, the transmission shaft 63 drives the impeller disc 62 to rotate, the impeller disc 62 drives the receiving cone 61 to rotate, fluid is impacted with the receiving cone 61 after entering the pump body, the tip of the receiving cone 61 guides the fluid, and most impact force of the fluid is removed. The impeller assembly 6 operates to drive fluid from the inlet pipe 4 into the pump body 3 and from the outlet pipe 5 out of the pump body 3. During the operation of the centrifugal pump, vibration is transferred to the mounting seat 71, the friction block 731 and the side edge of the damping cavity 72 are repeatedly rubbed, and friction heat is guided to the heat dissipation plate 733 by the heat conduction strip 732 to be dissipated.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A marine low vibration centrifugal pump, characterized in that: the centrifugal pump comprises a driving motor (1), a connecting component (2), a pump body (3), an input pipe (4), an output pipe (5), an impeller component (6) and a damping component (7), wherein the driving motor (1) and the damping component (7) are in fastening connection, the pump body (3) and the damping component (7) are in fastening connection, the damping component (7) and the hull of a ship are in fastening connection, one end of the connecting component (2) is in fastening connection with the driving motor (1), the other end of the connecting component (2) is in fastening connection with the pump body (3), one side of the input pipe (4) and one side of the pump body (3) away from the connecting component (2) are in fastening connection, the output pipe (5) is in fastening connection with the side of the pump body (3), the impeller component (6) is arranged inside the pump body (3), the impeller component (6) is in rotating connection with the pump body (3), and the impeller component (6) is in fastening connection with the connecting component (2).
The connecting assembly (2) comprises a connecting pipe (21), a first friction disc (22), a second friction disc (23), a transition shaft (24), a supporting spring (25) and an annular ring (26), one end of the connecting pipe (21) is in fastening connection with the driving motor (1), the other end of the connecting pipe (21) is in fastening connection with the pump body (3), the first friction disc (22) is in fastening connection with an output shaft of the driving motor (1), the first friction disc (22) is in rotating connection with the connecting pipe (21), a sliding groove is formed in one side, far away from the first friction disc (22), of the second friction disc (23), the sliding groove is in sliding connection with the transition shaft (24), one end, far away from the second friction disc (23), of the transition shaft (24) is in fastening connection with the impeller assembly (6), the annular ring (26) is in fastening connection with the transition shaft (24), the supporting spring (25) is sleeved on the transition shaft (24), one end of the supporting spring (25) is in fastening connection with the annular ring (26), and the other end of the supporting spring (25) is in fastening connection with the second friction disc (23).
The novel friction disc comprises a first friction disc (22), and is characterized in that arc grooves (27) are formed in the second friction disc (23), multiple groups of arc grooves (27) are formed in the arc grooves (27), the arc grooves (27) are uniformly distributed around the center of the second friction disc (23), an extending hole (28) is formed in the center of each arc groove (27), one end of each extending hole (28) is communicated with the corresponding arc groove (27), the other end of each extending hole (28) extends to the surface, close to the first friction disc (22), of the second friction disc (23), an adjusting unit (29) and an arc spring are arranged in each arc groove (27), the adjusting unit (29) is connected with the arc grooves (27) in a sliding mode, one end of each arc spring is fixedly connected with the corresponding adjusting unit (29), and the other end of each arc spring is fixedly connected with the side wall of the corresponding arc groove (27);
The adjusting unit (29) comprises a pressure sleeve (291), a pressure rod (292), a rolling wheel (293) and a return spring (294), wherein the pressure sleeve (291) is embedded into the second friction disc (23), the pressure rod (292) is in sliding connection with the pressure sleeve (291), one side, far away from the pressure sleeve (291), of the rolling wheel (293) and the pressure rod (292) is in rotary connection, one end of the return spring (294) is in fastening connection with the inner wall of the pressure sleeve (291), and the other end of the return spring (294) is in fastening connection with the pressure rod (292);
The impeller assembly (6) comprises a bearing cone (61), an impeller disc (62), a transmission shaft (63) and a buffer unit (64), wherein one side of the bearing cone (61) is in sliding connection with one side of the impeller disc (62), one side, far away from the bearing cone (61), of the transmission shaft (63) is in fastening connection with one side, far away from the bearing cone (61), of the impeller disc (62), one end of the buffer unit (64) is in fastening connection with the impeller disc (62), the other end of the buffer unit (64) is in fastening connection with the bearing cone (61), the bearing cone (61) covers the buffer unit (64), and the transmission shaft (63) is in fastening connection with the transition shaft (24);
Buffer unit (64) include connection pad (641), extrusion spring (642), block ring (643), one side that accept awl (61) and be close to impeller dish (62) is provided with the mounting groove, connection pad (641) and mounting groove fastening connection, extrusion spring (642) one end and connection pad (641) fastening connection, extrusion spring (642) other end and impeller dish (62) fastening connection, block ring (643) cover in extrusion spring (642) outside, block ring (643) and connection pad (641) set up with one heart, connection pad (641) side is provided with mounting hole (644), inside being provided with of mounting hole (644) keeps off strip (645), pulls spring (646), mounting hole (644) are provided with the multiunit, multiunit mounting hole (644) evenly distributed around connection pad (641), stop strip (645) and mounting hole (644) sliding connection, pull spring (646) one end and stop strip (645) fastening connection, other end (646) and mounting hole (646) fastening connection.
2. A low vibration centrifugal pump for a ship according to claim 1, wherein: the damping assembly (7) comprises two groups of mounting seats (71), damping cavities (72) and damping units (73), wherein one group of mounting seats (71) are fixedly connected with a driving motor (1), the other group of mounting seats (71) are fixedly connected with a pump body (3), the damping cavities (72) are arranged inside the mounting seats (71), the damping cavities (72) are provided with multiple groups, the multiple groups of damping cavities (72) are uniformly distributed inside the mounting seats (71), one end of each damping unit (73) is arranged inside the corresponding damping cavity (72), and the other end of each damping unit (73) is connected with the corresponding mounting seat (71).
3. A low vibration centrifugal pump for a ship according to claim 2, wherein: the damping unit (73) comprises a friction block (731), a heat conducting strip (732) and a radiating plate (733), wherein the friction block (731) is in sliding connection with the damping cavity (72), friction particles are arranged on the surface of the friction block (731), one end of the heat conducting strip (732) is in fastening connection with the damping cavity (72), the other end of the heat conducting strip (732) is in fastening connection with the radiating plate (733), and the radiating plate (733) is in fastening connection with the side edge of the mounting seat (71).
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| CN202410199450.1A CN117780653B (en) | 2024-02-23 | 2024-02-23 | Marine low-vibration centrifugal pump |
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| CN202410199450.1A CN117780653B (en) | 2024-02-23 | 2024-02-23 | Marine low-vibration centrifugal pump |
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| CN117780653B true CN117780653B (en) | 2024-04-30 |
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|---|---|---|---|---|
| CN101985942A (en) * | 2010-11-18 | 2011-03-16 | 姜堰市德华船用泵业制造有限公司 | Tangent pump for ships |
| CN108054865A (en) * | 2017-12-29 | 2018-05-18 | 贾庆隆 | new energy automobile motor damping device |
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| CN117780653A (en) | 2024-03-29 |
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