CN116498569B - Fire pump for anti-riot system with pressurize function - Google Patents
Fire pump for anti-riot system with pressurize function Download PDFInfo
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- CN116498569B CN116498569B CN202310770766.7A CN202310770766A CN116498569B CN 116498569 B CN116498569 B CN 116498569B CN 202310770766 A CN202310770766 A CN 202310770766A CN 116498569 B CN116498569 B CN 116498569B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 135
- 238000007599 discharging Methods 0.000 claims abstract description 22
- 238000013016 damping Methods 0.000 claims description 38
- 239000012530 fluid Substances 0.000 claims description 21
- 241000876443 Varanus salvator Species 0.000 claims description 8
- 239000012535 impurity Substances 0.000 abstract description 84
- 238000009825 accumulation Methods 0.000 abstract description 15
- 239000013535 sea water Substances 0.000 abstract description 11
- 238000005086 pumping Methods 0.000 abstract description 10
- 230000000903 blocking effect Effects 0.000 description 19
- 238000001914 filtration Methods 0.000 description 19
- 241000446313 Lamella Species 0.000 description 13
- 230000035939 shock Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 238000000926 separation method Methods 0.000 description 11
- 238000011010 flushing procedure Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 239000002245 particle Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 241001474374 Blennius Species 0.000 description 1
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4293—Details of fluid inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a fire pump with a pressure maintaining function for an anti-riot system, which relates to the technical field of fire pumps and comprises a pump body, an impeller, a flow guiding unit, a discharging unit, a power center and a pressure maintaining component, wherein the pump body is fixed on a ship body, one end of the flow guiding unit is arranged at the bottom of the ship, the other end of the flow guiding unit is fixedly connected with the pump body, the discharging unit is fixedly connected with the pump body, one side of the power center is fixedly connected with one side of the pump body, the pressure maintaining component is arranged in the flow guiding unit, and the impeller is arranged in the pump body. The flow guiding unit of the invention sets water flow when the ship body moves forward as one flow direction, sets water flow when the pump body pumps water as the other flow direction, and sets the two water flow directions to be opposite. By means of alternate backflushing of two sets of opposite water flows, blockage caused by impurity accumulation in the seawater is removed, the smoothness of pumping water is greatly improved, and most of mixed impurities are removed.
Description
Technical Field
The invention relates to the technical field of fire water pumps, in particular to a fire water pump with a pressure maintaining function for an anti-riot system.
Background
The fire-fighting water pump is one of fire-fighting equipment, and is mainly used for fire-fighting, but part of the fire-fighting water pump can be used on a ship as a power source of a ship-based water cannon. The fire pump is usually a centrifugal pump, has characteristics such as high efficiency, high strength, acid and alkali corrosion resistance, high durability, but current naval vessel is with fire pump has more defects, can't satisfy the user demand.
The fire pump for ship is mainly used for supplying water source for ship-borne fire monitor, and the fire monitor is mainly used for riot prevention. The conventional fire pump is used for directly pumping seawater to provide water for fire fighting cannons, more impurities and seaweed are contained in the seawater, the impurities enter the pump to cause water pump faults in the process of conveying a water source, and if the impurities are filtered, the filter screen is easily blocked, so that the water supply is influenced.
The grit that mixes in the sea water gets into fire pump along with the water source, carries through fire pump, and the grit gets into fire monitor, and fire monitor department water is penetrated with high speed, and the friction between grit and the monitor is showing and is increasing, easily causes the monitor damage. On the other hand, the damage power can be greatly improved after sand and stone are mixed in the water body and the sand and stone can be quickly ejected to cause unnecessary personnel injury when the conventional anti-riot activities are dealt with.
Disclosure of Invention
The invention aims to provide a fire pump with a pressure maintaining function for an anti-riot system, so as 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 fire pump for anti-riot system with pressurize function, which comprises a pump body, the impeller, the water conservancy diversion unit, discharge unit, the power hub, the pressurize subassembly, the pump body is fixed on the hull, water conservancy diversion unit one end sets up at the bottom of the ship, water conservancy diversion unit other end and pump body fastening connection, discharge unit and pump body fastening connection, power hub and pump body one side fastening connection, the pressurize subassembly sets up inside the water conservancy diversion unit, the power hub includes driving motor, the shaft coupling, damper bottom and hull fastening connection, damper top and driving motor fastening connection, driving motor's output shaft and coupling connection, one side that driving motor was kept away from to the coupling is connected with the input shaft of impeller, the impeller setting is inside the pump body. The power center drives the impeller to rotate, the impeller drives water flow to enter from the flow guiding unit, the water flow is output from the discharging unit, and the water flow is conveyed to the marine fire water monitor. When the driving motor works, the damping component dampens vibration of the driving motor. The flow guiding unit of the invention sets water flow when the ship body moves forward as one flow direction, sets water flow when the pump body pumps water as the other flow direction, and sets the two water flow directions to be opposite. By means of alternate backflushing of two sets of opposite water flows, blockage caused by impurity accumulation in the seawater is removed, the smoothness of pumping water is greatly improved, and most of mixed impurities are removed. On the other hand, the combined valve sheets are arranged as the filtering holes, the combined valve sheets are extruded and attached to block larger impurities during forward filtering, the inclined surfaces on the combined valve sheets guide the impurities, the impurities are prevented from directly blocking the filtering holes, the combined valve sheets are automatically split during back flushing, the flushing aperture is enlarged, and the cracks among the combined valve sheets enable water bodies to directly impact the impurity accumulation positions, so that the impurities are more fully removed.
Further, the water conservancy diversion unit includes fixed plate, inflow dish, lift jar, honeycomb duct, and fixed plate and hull bottom fastening connection, and the fixed plate bottom is provided with the setting hole, and the inflow dish is embedded into the setting hole, and lift jar and fixed plate fastening connection, the output shaft and the honeycomb duct fastening connection of lift jar, honeycomb duct and the pump body intercommunication, the one end and the fixed plate sliding connection of the pump body are kept away from to the honeycomb duct. The honeycomb duct sets up in hull forward direction department, under not pumping water state, rivers pass inflow dish, when needs pump water, and the lift jar drives the honeycomb duct and removes along the fixed plate, honeycomb duct and inflow dish coincidence are from inflow dish opposite side pump water inflow.
Further, the inside a plurality of flow holes that are provided with of inflow dish, the flow hole is along inflow dish surface evenly distributed, the flow hole runs through inflow dish both sides, flow hole one end is opened and is set up, the flow hole other end is provided with filter unit, filter unit includes the combination lamella, hold the ring, solid fixed ring, the combination lamella sets up to trapezoidal, combination lamella base and solid fixed ring are articulated, the combination lamella is provided with the multichip, multichip combination lamella is around solid fixed ring evenly distributed, hold the ring cover is in the combination lamella one side that is close to solid fixed ring, hold ring and solid fixed ring fastening connection, hold the ring oppression combination lamella, adjacent combination lamella side is pressed close to each other. The side that the combination lamella was kept away from to the circulation hole is provided with the blocking net, and under conventional condition, the hull is gone forward, and rivers get into from the circulation hole, discharge from the combination lamella, and most impurity in the rivers are blocked by the blocking net, and the blocking net department just can form impurity accumulation through longer time, before impurity accumulation, the combination lamella all can be propped up by the rivers, and each combination lamella separation, rivers are discharged from the gap department of combination lamella, and one side recoil that the inflow dish kept away from the circulation hole is clear away. When water is required to be pumped, the flow guide pipe moves downwards, the flow guide pipe firstly scrapes most of impurities accumulated on the surface of the blocking net, at the moment, water flow is pumped in from one side of the combined valve sheet, when the water flow is rushed to one side of the combined valve sheet, the combined valve sheet is pressed and gathered by the water flow, each combined valve sheet forms a filtering sieve hole after being gathered, the larger impurities are blocked by the combined valve sheet and deviate along the inclined plane of the combined valve sheet, the impurities are accumulated at the inlet disc, and a small amount of impurities remained at the blocking net are also backflushed and discharged. The flow guiding unit of the invention sets water flow when the ship body moves forward as one flow direction, sets water flow when the pump body pumps water as the other flow direction, and sets the two water flow directions to be opposite. By means of alternate backflushing of two sets of opposite water flows, blockage caused by impurity accumulation in the seawater is removed, the smoothness of pumping water is greatly improved, and most of mixed impurities are removed. On the other hand, the combined valve sheets are arranged as the filtering holes, the combined valve sheets are extruded and attached to block larger impurities during forward filtering, the inclined surfaces on the combined valve sheets guide the impurities, the impurities are prevented from directly blocking the filtering holes, the combined valve sheets are automatically split during back flushing, the flushing aperture is enlarged, and the cracks among the combined valve sheets enable water bodies to directly impact the impurity accumulation positions, so that the impurities are more fully removed.
Further, the water conservancy diversion unit still includes flexible cover, and flexible cover overlaps in the lift jar outside, and flexible cover both ends are provided with locating plate, lower locating plate, go up locating plate and fixed plate fastening connection, lower locating plate and honeycomb duct fastening connection, lift jar quilt cover is inside flexible cover, and lift jar and last locating plate fastening connection, and the output shaft and the lower locating plate fastening connection of lift jar. The telescopic sleeve is communicated with the external space and isolates the lifting cylinder from seawater so as to prolong the service life of the lifting cylinder.
Further, the discharge unit includes a water supply pipe, the separating drum, the separating motor, first gear, the second ring gear, the rotating drum, the helicla flute, rotor blade, output cover, water supply pipe and pump body link to each other, water supply pipe and separating drum fastening connection, water supply pipe and rotating drum rotate to be connected, separating drum and hull fastening connection, second ring gear and rotating drum fastening connection, separating motor and separating drum fastening connection, separating motor's output shaft and first gear fastening connection, first gear and second gear meshing, the rotating drum sets up inside the separating drum, rotating drum and separating drum rotate to be connected, be provided with many helicla flute on the rotating drum lateral wall, the helicla flute is around rotating drum evenly distributed, output cover and separating drum fastening connection, helicla flute and output cover intercommunication. The separating motor drives the first gear to rotate, the first gear drives the second toothed ring to rotate, the second toothed ring drives the rotating cylinder to rotate, the water supply pipe is communicated with two sides of the rotating cylinder, when water flows into the rotating cylinder, along with rotation of the rotating blades, impurities in the water body are concentrated to the side wall of the rotating cylinder, the impurities enter the spiral groove when moving along the side wall of the rotating cylinder, friction particles are arranged inside the spiral groove, the impurities are polished by the friction particles in the process of moving along the spiral groove, finally the water in the rotating cylinder is output along the water supply pipe, and the water in the spiral groove carries the impurities to be input and output together to the sinking groove from the output sleeve.
Further, the discharge unit further comprises a discharge sleeve, a communication block and a sinking groove, the discharge sleeve is fixed on an output port of the fire water monitor, the sinking groove is arranged on the lower side of the inner wall of the discharge sleeve, the discharge sleeve is connected with the water supply pipe through the fire water monitor, the communication block is fixedly connected with the outer wall of the discharge sleeve, one end of the communication block is communicated with the output sleeve, and the other end of the communication block is communicated with the sinking groove. The mixed impurity of water enters into the discharge sleeve together to enter into the sinking groove at the discharge sleeve, the mixed impurity of water is sprayed out together, but the impurity is concentrated on the downside of the sprayed water, so that the impurity can be sprayed out for a certain distance, and can be prevented from falling on a ship, and the spraying center can be avoided, so that the human body is prevented from being injured.
Further, damper includes shock attenuation board, the cushion chamber, buffer unit, shock attenuation board bottom and hull fastening connection, shock attenuation board top and pump body fastening connection, the inside a plurality of cushion chambers that are provided with of shock attenuation board, buffer chamber evenly distributed is inside the shock attenuation board, buffer unit sets up inside the cushion chamber, buffer unit includes first buffer bag, the second buffer bag, the board slides, first buffer bag, second buffer bag respectively with buffer intracavity wall both sides fastening connection, one side and the board one side fastening connection that slides of buffering intracavity wall are kept away from to first buffer bag, one side and the board opposite side fastening connection that slides of buffering intracavity wall are kept away from to second buffer bag, board and cushion chamber sliding connection slide, the inside balancing weight that is provided with of board slides, board center department of sliding is provided with the through-hole, through-hole and first buffer bag, second buffer bag intercommunication, the inside one-way conduction valve that is provided with of through-hole can only follow second buffer bag switches on first buffer bag, be provided with one-way input hole on the second buffer bag, one-way output hole and outside space intercommunication, be provided with the air-way output hole and air current hole on the driving motor lateral wall intercommunication. The vibration energy of the driving motor is transmitted to the damping plate to cause the sliding plate to shake, the first buffer bag and the second buffer bag alternately shrink and expand in the shaking process of the sliding plate, the second buffer bag can inhale gas when expanding, the gas is pressed into the first buffer bag when contracting, and the gas is input into the airflow hole when contracting. The vibration energy of the motor is quickly converted into gas kinetic energy through the vibration of the sliding plate, and the gas is guided to pass through the airflow holes through the gas kinetic energy, so that the surface temperature of the motor is reduced, and the service life of the motor is greatly prolonged.
Further, the pressure maintaining assembly comprises a fluid pressure sensor and a cross frame, the cross frame is fixedly connected with the flow guide pipe, the fluid pressure sensor is arranged at the center of the cross frame, and the cross section area of one side of the cross frame, which faces the inlet of the flow guide pipe, is smaller than the cross section area of one side of the cross frame, which is far away from the inlet of the flow guide pipe. The fluid pressure sensor detects the fluid pressure of the pump in real time, and adjusts the power center according to the change of the fluid pressure so as to ensure the stability of the output fluid pressure. The fluid pressure sensor and the power hub regulation system are all conventional in the art, and the specific results are not described.
Compared with the prior art, the invention has the following beneficial effects: the flow guiding unit of the invention sets water flow when the ship body moves forward as one flow direction, sets water flow when the pump body pumps water as the other flow direction, and sets the two water flow directions to be opposite. By means of alternate backflushing of two sets of opposite water flows, blockage caused by impurity accumulation in the seawater is removed, the smoothness of pumping water is greatly improved, and most of mixed impurities are removed. On the other hand, the combined valve sheets are arranged as the filtering holes, the combined valve sheets are extruded and attached to block larger impurities during forward filtering, the inclined surfaces on the combined valve sheets guide the impurities, the impurities are prevented from directly blocking the filtering holes, the combined valve sheets are automatically split during back flushing, the flushing aperture is enlarged, and the cracks among the combined valve sheets enable water bodies to directly impact the impurity accumulation positions, so that the impurities are more fully removed. The discharge unit of the invention can spray out impurities for a certain distance by limiting the position of the water body of the mixed impurities, thereby avoiding falling on a ship, avoiding a spraying center and avoiding damaging human bodies. The vibration energy of the motor is quickly converted into gas kinetic energy through the vibration of the sliding plate, and the gas is guided to pass through the airflow holes through the gas kinetic energy, so that the surface temperature of the motor is reduced, and the service life of the motor is greatly prolonged.
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 view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the flow guiding unit of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic diagram of an inflow disk kick-back condition of the present invention;
FIG. 5 is a schematic view of the pressure maintaining assembly of the present invention;
fig. 6 is a schematic view of the structure of the discharge unit of the present invention;
FIG. 7 is a cross-sectional view of the discharge casing of the present invention;
FIG. 8 is a schematic view of the shock absorbing assembly of the present invention;
in the figure: 1-pump body, 2-impeller, 3-flow guiding unit, 31-fixed plate, 32-inflow disk, 321-flow through hole, 322-combined flap, 323-holding ring, 324-fixed ring, 33-lifting cylinder, 34-flow guiding pipe, 35-telescopic sleeve, 36-upper positioning plate, 37-lower positioning plate, 4-discharging unit, 41-water feeding pipe, 42-separating cylinder, 43-separating motor, 44-rotating cylinder, 45-spiral groove, 46-rotating blade, 47-output sleeve, 48-discharging sleeve, 49-sinking groove, 5-power center, 51-driving motor, 52-coupling, 53-damping component, 531-damping plate, 532-damping cavity, 533-damping unit, 5331-first damping bag, 5332-second damping bag, 5333-sliding plate, 6-pressure maintaining component, 61-fluid pressure sensor, 62-cross frame.
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 fig. 1, the fire pump with pressure maintaining function for an anti-riot system comprises a pump body 1, an impeller 2, a flow guiding unit 3, a discharging unit 4, a power center 5 and a pressure maintaining component 6, wherein the pump body 1 is fixed on a ship body, one end of the flow guiding unit 3 is arranged at the bottom of the ship, the other end of the flow guiding unit 3 is in fastening connection with the pump body 1, the discharging unit 4 is in fastening connection with the pump body 1, the power center 5 is in fastening connection with one side of the pump body 1, the pressure maintaining component 6 is arranged in the flow guiding unit 3, the power center 5 comprises a driving motor 51, a coupler 52 and a damping component 53, the bottom of the damping component 53 is in fastening connection with the ship body, the top of the damping component 53 is in fastening connection with the driving motor 51, an output shaft of the driving motor 51 is connected with the coupler 52, one side of the coupler 52 away from the driving motor 51 is connected with an input shaft of the impeller 2, and the impeller 2 is arranged in the pump body 1. The power center 5 drives the impeller 2 to rotate, the impeller 2 drives water flow to enter from the flow guiding unit 3, the water flow is output from the discharging unit 4, and the water flow is conveyed to the marine fire water monitor. When the driving motor 51 is operated, the damper assembly 53 performs a damping process on the vibration of the driving motor 51. The flow guiding unit 3 of the invention sets the water flow when the ship body moves forward as one flow direction, sets the water flow when the pump body pumps water as the other flow direction, and sets the two water flow directions to be opposite. By means of alternate backflushing of two sets of opposite water flows, blockage caused by impurity accumulation in the seawater is removed, the smoothness of pumping water is greatly improved, and most of mixed impurities are removed. On the other hand, the combined petals 322 are arranged as the filtering holes, the combined petals 322 are extruded and attached to separate larger impurities during forward filtering, the inclined surfaces on the combined petals 322 guide the impurities, the impurities are prevented from directly blocking the filtering holes, the combined petals 322 are automatically split during back flushing, the flushing aperture is enlarged, and the cracks among the combined petals enable the water body to directly impact the impurity accumulation position, so that the impurities are more fully removed.
As shown in fig. 2 and 3, the flow guiding unit 3 includes a fixing plate 31, an inflow disc 32, a lifting cylinder 33 and a flow guiding tube 34, the fixing plate 31 is fixedly connected with the bottom of the ship body, a hole is formed in the bottom of the fixing plate 31, the inflow disc 32 is embedded into the hole, the lifting cylinder 33 is fixedly connected with the fixing plate 31, an output shaft of the lifting cylinder 33 is fixedly connected with the flow guiding tube 34, the flow guiding tube 34 is communicated with the pump body 1, and one end, far away from the pump body 1, of the flow guiding tube 34 is slidably connected with the fixing plate. The guide pipe 34 is arranged at the advancing direction of the ship body, under the condition of no pumping water, water flows through the inflow disc 32, and when the pumping water is needed, the lifting cylinder 33 drives the guide pipe 34 to move along the fixed plate 31, the guide pipe 34 is overlapped with the inflow disc 32, and the water is pumped from the other side of the inflow disc 32.
As shown in fig. 3 and 4, a plurality of flow holes 321 are formed in the inflow disc 32, the flow holes 321 are uniformly distributed along the surface of the inflow disc 32, the flow holes 321 penetrate through two sides of the inflow disc 32, one end of each flow hole 321 is opened, a filtering unit is arranged at the other end of each flow hole 321 and comprises a combined flap 322, a holding ring 323 and a fixing ring 324, the combined flap 322 is trapezoidal, the bottom edges of the combined flaps 322 are hinged to the fixing rings 324, the combined flaps 322 are provided with a plurality of pieces, the combined flaps 322 are uniformly distributed around the fixing rings 324, the holding rings 323 are sleeved on one side, close to the fixing rings 324, of the combined flaps 322, the holding rings 323 are fixedly connected with the fixing rings 324, the combined flaps 322 are pressed by the holding rings 323, and the side edges of the adjacent combined flaps 322 are mutually close. One side of the flow hole 321 far away from the combined flap 322 is provided with a blocking net, under the normal state, the ship body moves forward, water flows enter from the flow hole 321 and are discharged from the combined flap 322, most impurities in the water flow are blocked by the blocking net, the blocking net can form impurity accumulation after a long time, the combined flap 322 can be propped open by the water flow before the impurities are accumulated, each combined flap 322 is separated, the water flow is discharged from a gap of the combined flap 322, and one side of the inflow disc 32 far away from the flow hole 321 is recoil-removed. When water is pumped, the flow guide pipe 34 moves downwards, the flow guide pipe 34 scrapes most of impurities accumulated on the surface of the blocking net, at the moment, water flow is pumped from one side of the combined valve piece 322, when the water flow is rushed to one side of the combined valve piece 322, the combined valve piece 322 is pressed by the water flow to gather, each combined valve piece 322 forms a filtering sieve mesh after gathering, larger impurities are blocked by the combined valve piece 322 and deviate along the inclined plane of the combined valve piece 322, the impurities are accumulated at the position of the inflow disc 32, and a small amount of impurities remained at the blocking net are reversely flushed and discharged. The flow guiding unit 3 of the invention sets the water flow when the ship body moves forward as one flow direction, sets the water flow when the pump body pumps water as the other flow direction, and sets the two water flow directions to be opposite. By means of alternate backflushing of two sets of opposite water flows, blockage caused by impurity accumulation in the seawater is removed, the smoothness of pumping water is greatly improved, and most of mixed impurities are removed. On the other hand, the combined petals 322 are arranged as the filtering holes, the combined petals 322 are extruded and attached to separate larger impurities during forward filtering, the inclined surfaces on the combined petals 322 guide the impurities, the impurities are prevented from directly blocking the filtering holes, the combined petals 322 are automatically split during back flushing, the flushing aperture is enlarged, and the cracks among the combined petals enable the water body to directly impact the impurity accumulation position, so that the impurities are more fully removed.
As shown in fig. 2, the flow guiding unit 3 further includes a telescopic sleeve 35, the telescopic sleeve 35 is sleeved outside the lifting cylinder 33, two ends of the telescopic sleeve 35 are provided with an upper positioning plate 36 and a lower positioning plate 37, the upper positioning plate 36 is fixedly connected with the fixed plate 31, the lower positioning plate 37 is fixedly connected with the flow guiding tube 34, the lifting cylinder 33 is sleeved inside the telescopic sleeve 35, the lifting cylinder 33 is fixedly connected with the upper positioning plate 36, and an output shaft of the lifting cylinder 33 is fixedly connected with the lower positioning plate 37. The telescopic sleeve 35 is communicated with the external space and isolates the lifting cylinder 33 from seawater to improve the service life of the lifting cylinder 33.
As shown in fig. 6, the discharge unit 4 includes a water feed pipe 41, a separation cylinder 42, a separation motor 43, a first gear, a second toothed ring, a rotation cylinder 44, a spiral groove 45, a rotation blade 46, and an output sleeve 47, the water feed pipe 41 is connected with the pump body 1, the water feed pipe 41 is fastened to the separation cylinder 42, the water feed pipe 41 is fastened to the rotation cylinder 44, the separation cylinder 42 is fastened to the hull, the second toothed ring is fastened to the rotation cylinder 44, the separation motor 43 is fastened to the separation cylinder 42, an output shaft of the separation motor 43 is fastened to the first gear, the first gear is engaged with the second gear, the rotation cylinder 44 is disposed inside the separation cylinder 42, the rotation cylinder 44 is fastened to the separation cylinder 42, a plurality of spiral grooves 45 are provided on a side wall of the rotation cylinder 44, the spiral grooves 45 are uniformly distributed around the rotation cylinder 44, the output sleeve 47 is fastened to the separation cylinder 42, and the spiral groove 45 is communicated with the output sleeve 47. The separating motor 43 drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the rotating cylinder 44 to rotate, the water supply pipe 41 is communicated with two sides of the rotating cylinder, when water flows into the rotating cylinder 44, the water flows into the rotating cylinder 44 along with the rotation of the rotating blades 46, impurities in the water body are concentrated to the side wall of the rotating cylinder 44 under the action of centrifugal force, the impurities enter the spiral groove 45 when moving along the side wall of the rotating cylinder 44, friction particles are arranged in the spiral groove 45, the impurities are polished by the friction particles in the process of moving along the spiral groove 45, finally, the water in the rotating cylinder 44 is output along the water supply pipe 41, and the water in the spiral groove 45 carries the impurities to be input into the output sleeve 47 together, and is input into the sinking groove 49 from the output sleeve 47.
As shown in fig. 7, the discharging unit 4 further includes a discharging sleeve 48, a communicating block, and a sinking groove 49, wherein the discharging sleeve 48 is fixed on the outlet of the fire water monitor, the sinking groove 49 is disposed at the lower side of the inner wall of the discharging sleeve 48, the discharging sleeve 48 is connected with the water supply pipe 41 through the fire water monitor, the communicating block is fixedly connected with the outer wall of the discharging sleeve 48, one end of the communicating block is communicated with the output sleeve 47, and the other end of the communicating block is communicated with the sinking groove 49. The water mixed impurities enter the discharge sleeve 48 together and enter the sinking groove 49 at the discharge sleeve 48, and are sprayed out together, but the impurities are concentrated on the lower side of the sprayed water, so that the impurities can be sprayed out for a certain distance, can be prevented from falling on a ship, can avoid a spraying center, and can be prevented from damaging human bodies.
As shown in fig. 8, the shock absorbing assembly 53 includes a shock absorbing plate 531, a shock absorbing cavity 532, a buffer unit 533, the shock absorbing plate 531 bottom and the hull fastening connection, the shock absorbing plate 531 top and the pump body 1 fastening connection, the inside a plurality of buffer cavities 532 that are provided with of shock absorbing plate 531, buffer cavity 532 evenly distributed is inside shock absorbing plate 531, buffer unit 533 sets up inside buffer cavity 532, buffer unit 533 includes first buffer bag 5331, second buffer bag 5332, sliding plate 5333, first buffer bag 5331, second buffer bag 5332 respectively with buffer cavity 532 inner wall both sides fastening connection, one side that first buffer bag 5331 is kept away from buffer cavity 532 inner wall and sliding plate 5333 one side fastening connection, one side that second buffer bag 5332 is kept away from buffer cavity 532 inner wall and sliding plate 5333 opposite side fastening connection, sliding plate 5333 and buffer cavity 532 sliding connection, sliding plate 5333 inside is provided with the balancing weight, sliding plate 5333 center department is provided with the through-hole, through-hole and first buffer bag 5331, second buffer bag 5332 intercommunication, the through-hole inside is provided with the check valve, the through-hole can only be provided with the one-way valve from second buffer bag 5332 to the first buffer bag 5331, the one-way output hole is provided with the one-way hole on the motor output port 5332, the one-way hole is provided with the one-way output port on the output port is connected to the one-way hole on the first buffer hole 5332, the output port is connected to the one-way hole, the output port is connected to the output port, and the one-way hole is connected. The vibration energy of the driving motor 51 is transferred to the damper plate 531, so that the sliding plate 5333 is vibrated, the first buffer bag 5331 and the second buffer bag 5332 are alternately contracted and expanded in the process of the vibration of the sliding plate 5333, the second buffer bag 5332 is expanded to suck gas, the gas is pressed into the first buffer bag 5331 when the second buffer bag 5332 is contracted, and the gas is input into the airflow hole when the first buffer bag 5331 is contracted. The vibration absorbing component 53 of the invention can rapidly convert vibration energy of the motor into gas kinetic energy through shaking of the sliding plate, and guide gas to pass through the gas flow holes through the gas kinetic energy, thereby reducing the surface temperature of the motor and greatly prolonging the service life of the motor.
As shown in fig. 5, the pressure maintaining assembly 6 includes a fluid pressure sensor 61 and a cross frame 62, the cross frame 62 is tightly connected with the flow guide tube 34, the fluid pressure sensor 61 is disposed at the center of the cross frame 62, and the cross frame 62 has a smaller cross sectional area toward the inlet side of the flow guide tube 34 than the cross frame 62. The fluid pressure sensor 61 detects the pump fluid pressure in real time, and adjusts the power center according to the change of the fluid pressure to ensure the stability of the output fluid pressure. The fluid pressure sensor 61 and the regulation system of the power hub 5 are all conventional means in the art, and the specific results are not described.
The working principle of the invention is as follows: under the normal state, the hull moves forward, water flow enters from the circulation hole 321 and is discharged from the combined flap 322, most impurities in the water flow are blocked by the blocking net, the blocking net can form impurity accumulation after a long time, before the impurities are accumulated, the combined flap 322 is spread by the water flow, each combined flap 322 is separated, the water flow is discharged from the gap of the combined flap 322, and one side of the inflow disc 32 far away from the circulation hole 321 is recoil-removed. When water is pumped, the flow guide pipe 34 moves downwards, the flow guide pipe 34 scrapes most of impurities accumulated on the surface of the blocking net, at the moment, water flow is pumped from one side of the combined valve piece 322, when the water flow is rushed to one side of the combined valve piece 322, the combined valve piece 322 is pressed by the water flow to gather, each combined valve piece 322 forms a filtering sieve mesh after gathering, larger impurities are blocked by the combined valve piece 322 and deviate along the inclined plane of the combined valve piece 322, the impurities are accumulated at the position of the inflow disc 32, and a small amount of impurities remained at the blocking net are reversely flushed and discharged. The driving motor 51 drives the impeller to rotate, water flows into the pump body, the fluid pressure sensor 61 detects the pressure of the fluid in the pump in real time, and the power center is regulated according to the change of the fluid pressure so as to ensure the stability of the output fluid pressure. The water flow is input and discharged into the unit, the separating motor 43 drives the first gear to rotate, the first gear drives the second gear ring to rotate, the second gear ring drives the rotating cylinder 44 to rotate, the water supply pipe 41 is communicated with two sides of the rotating cylinder, when the water flow enters the rotating cylinder 44, the water flow rotates along with the rotating blades 46, impurities in the water body are concentrated to the side wall of the rotating cylinder 44 under the action of centrifugal force, the impurities enter the spiral groove 45 when moving along the side wall of the rotating cylinder 44, friction particles are arranged in the spiral groove 45, the impurities are polished by the friction particles in the process of moving along the spiral groove 45, finally, the water in the rotating cylinder 44 is output along the water supply pipe 41, and the water in the spiral groove 45 carries the impurities to be input and output into the sleeve 47 together, and is input into the sinking groove 49 from the output sleeve 47. The water body is sprayed with the mixed impurities, but the impurities are concentrated on the lower side of the sprayed water body.
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 (4)
1. Fire pump for anti-riot system with pressurize function, its characterized in that: the fire pump comprises a pump body (1), an impeller (2), a flow guiding unit (3), a discharging unit (4), a power center (5) and a pressure maintaining component (6), wherein the pump body (1) is fixed on a ship body, one end of the flow guiding unit (3) is arranged at the bottom of the ship body, the other end of the flow guiding unit (3) is in fastening connection with the pump body (1), the discharging unit (4) is in fastening connection with the pump body (1), the power center (5) is in fastening connection with one side of the pump body (1), the pressure maintaining component (6) is arranged inside the flow guiding unit (3), the power center (5) comprises a driving motor (51), a coupler (52) and a damping component (53), the bottom of the damping component (53) is in fastening connection with the ship body, an output shaft of the driving motor (51) is in fastening connection with the coupler (52), and one side of the coupler (52) away from the driving motor (51) is connected with an input shaft of the impeller (2), and the impeller (2) is arranged inside the pump body (1).
The guide unit (3) comprises a fixed plate (31), an inflow disc (32), a lifting cylinder (33) and a guide pipe (34), wherein the fixed plate (31) is fixedly connected with the bottom of the ship body, a setting hole is formed in the bottom of the fixed plate (31), the inflow disc (32) is embedded into the setting hole, the lifting cylinder (33) is fixedly connected with the fixed plate (31), an output shaft of the lifting cylinder (33) is fixedly connected with the guide pipe (34), the guide pipe (34) is communicated with the pump body (1), and one end, far away from the pump body (1), of the guide pipe (34) is slidably connected with the fixed plate (31);
the filter device comprises an inflow disc (32), wherein a plurality of flow holes (321) are formed in the inflow disc (32), the flow holes (321) are uniformly distributed along the surface of the inflow disc (32), the flow holes (321) penetrate through two sides of the inflow disc (32), one end of each flow hole (321) is opened, a filter unit is arranged at the other end of each flow hole (321), each filter unit comprises a combined flap (322), a holding ring (323) and a fixed ring (324), each combined flap (322) is arranged in a trapezoid shape, the bottom edges of the combined flaps (322) are hinged with the fixed rings (324), the combined flaps (322) are provided with a plurality of pieces, the combined flaps (322) are uniformly distributed around the fixed rings (324), the holding rings (323) are sleeved on one sides, close to the fixed rings (324), of the combined flaps (322) are tightly connected with the fixed rings (323), the side edges of the adjacent combined flaps (322) are pressed by the holding rings (323), and the adjacent combined flaps (322) are mutually pressed close to each other;
the damping component (53) comprises a damping plate (531), a damping cavity (532) and a damping unit (533), the bottom of the damping plate (531) is fixedly connected with the hull, the top of the damping plate (531) is fixedly connected with the pump body (1), a plurality of damping cavities (532) are arranged in the damping plate (531), the damping cavities (532) are uniformly distributed in the damping plate (531), the damping unit (533) is arranged in the damping cavity (532), the damping unit (533) comprises a first damping bag (5331), a second damping bag (5332) and a sliding plate (5333), the first damping bag (5331) and the second damping bag (5332) are respectively fixedly connected with the two sides of the inner wall of the damping cavity (532), one side of the first damping bag (5331) far away from the inner wall of the damping cavity (532) is fixedly connected with one side of the sliding plate (5333), one side of the inner wall of the second damping bag (5332) is fixedly connected with the other side of the sliding plate (5333), the sliding plate (5333) is fixedly connected with the sliding plate (5333), the damping bag (5333) is connected with the inner wall of the second damping bag (5333), a through hole (5333) is formed in the middle, the first damping bag (5333) is communicated with the inner through hole (5333), the first through hole (5333) is communicated with the inner part, the through hole can only be communicated from the second buffer bag (5332) to the first buffer bag (5331), a one-way input hole is formed in the second buffer bag (5332), a one-way output hole is formed in the first buffer bag (5331), the one-way output hole is communicated with an external space, an air flow hole is formed in the side wall of the driving motor (51), and the one-way output hole is communicated with the air flow hole;
the pressure maintaining assembly (6) comprises a fluid pressure sensor (61) and a cross frame (62), the cross frame (62) is fixedly connected with the guide pipe (34), the fluid pressure sensor (61) is arranged at the center of the cross frame (62), and the cross section area of one side of the cross frame (62) facing the inlet of the guide pipe (34) is smaller than the cross section area of one side of the cross frame (62) far away from the inlet of the guide pipe (34).
2. The fire pump for an anti-riot system with pressure maintaining function according to claim 1, characterized in that: the flow guiding unit (3) further comprises a telescopic sleeve (35), the telescopic sleeve (35) is sleeved outside the lifting cylinder (33), two ends of the telescopic sleeve (35) are provided with an upper positioning plate (36) and a lower positioning plate (37), the upper positioning plate (36) is fixedly connected with the fixed plate (31), the lower positioning plate (37) is fixedly connected with the flow guiding pipe (34), the lifting cylinder (33) is sleeved inside the telescopic sleeve (35), the lifting cylinder (33) is fixedly connected with the upper positioning plate (36), and an output shaft of the lifting cylinder (33) is fixedly connected with the lower positioning plate (37).
3. The fire pump for an anti-riot system with pressure maintaining function according to claim 2, characterized in that: the utility model provides a discharge unit (4) is including feed pipe (41), separating drum (42), separating motor (43), first gear, second ring gear, rotary drum (44), helicla flute (45), rotor blade (46), output cover (47), feed pipe (41) and pump body (1) link to each other, feed pipe (41) and separating drum (42) fastening connection, feed pipe (41) and rotary drum (44) rotate to be connected, separating drum (42) and hull fastening connection, second ring gear and rotary drum (44) fastening connection, separating motor (43) and separating drum (42) fastening connection, the output shaft and the first gear fastening connection of separating motor (43), first gear and second gear engagement, rotary drum (44) set up inside separating drum (42), rotary drum (44) and separating drum (42) rotate to be connected, be provided with many helicla flute (45) on rotary drum (44) lateral wall, helicla flute (45) evenly distributed around rotary drum (44) and output cover (47), output cover (47) and intercommunication.
4. A fire pump for an anti-riot system having a pressure maintaining function according to claim 3, characterized in that: the discharging unit (4) further comprises a discharging sleeve (48), a communicating block and a sinking groove (49), the discharging sleeve (48) is fixed on an output port of the fire water monitor, the sinking groove (49) is arranged on the lower side of the inner wall of the discharging sleeve (48), the discharging sleeve (48) is connected with the water supply pipe (41) through the fire water monitor, the communicating block is fixedly connected with the outer wall of the discharging sleeve (48), one end of the communicating block is communicated with the output sleeve (47), and the other end of the communicating block is communicated with the sinking groove (49).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310770766.7A CN116498569B (en) | 2023-06-28 | 2023-06-28 | Fire pump for anti-riot system with pressurize function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310770766.7A CN116498569B (en) | 2023-06-28 | 2023-06-28 | Fire pump for anti-riot system with pressurize function |
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| CN116498569B true CN116498569B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB866136A (en) * | 1958-09-26 | 1961-04-26 | Fmc Corp | Apparatus for pumping liquids |
| CN108302044A (en) * | 2018-04-03 | 2018-07-20 | 江苏江大流体技术有限公司 | A kind of energy-efficient marine pump |
| CN108793300A (en) * | 2017-05-02 | 2018-11-13 | 佛山市顺德区美的饮水机制造有限公司 | Moisture separation device and water dispenser with it |
| CN209510723U (en) * | 2019-01-11 | 2019-10-18 | 济南大学 | A kind of sodium pump increasing hydrostatic bearing liquid supply pressure |
| CN216802426U (en) * | 2022-01-25 | 2022-06-24 | 河北昊天滤清器制造有限公司 | A suppression device for assembling oil cleaner end cover subassembly |
| CN217746367U (en) * | 2022-08-18 | 2022-11-08 | 厦门瑞翔鑫环保科技有限公司 | PET environmental protection processing exhaust apparatus |
-
2023
- 2023-06-28 CN CN202310770766.7A patent/CN116498569B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB866136A (en) * | 1958-09-26 | 1961-04-26 | Fmc Corp | Apparatus for pumping liquids |
| CN108793300A (en) * | 2017-05-02 | 2018-11-13 | 佛山市顺德区美的饮水机制造有限公司 | Moisture separation device and water dispenser with it |
| CN108302044A (en) * | 2018-04-03 | 2018-07-20 | 江苏江大流体技术有限公司 | A kind of energy-efficient marine pump |
| CN209510723U (en) * | 2019-01-11 | 2019-10-18 | 济南大学 | A kind of sodium pump increasing hydrostatic bearing liquid supply pressure |
| CN216802426U (en) * | 2022-01-25 | 2022-06-24 | 河北昊天滤清器制造有限公司 | A suppression device for assembling oil cleaner end cover subassembly |
| CN217746367U (en) * | 2022-08-18 | 2022-11-08 | 厦门瑞翔鑫环保科技有限公司 | PET environmental protection processing exhaust apparatus |
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| CN116498569A (en) | 2023-07-28 |
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