CN109236676B - Anti-blocking control method for floating pump - Google Patents
Anti-blocking control method for floating pump Download PDFInfo
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- CN109236676B CN109236676B CN201811184742.9A CN201811184742A CN109236676B CN 109236676 B CN109236676 B CN 109236676B CN 201811184742 A CN201811184742 A CN 201811184742A CN 109236676 B CN109236676 B CN 109236676B
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- floating
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- pump
- water pump
- floating ring
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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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
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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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially 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
Abstract
The invention belongs to the technical field of water pumps, and particularly relates to an anti-blocking control method of a floating pump, which comprises the following steps: (1) monitoring the power of a driving motor of the pump body; (2) comparing the monitored power of the driving motor with a predetermined power and a maximum used power of the driving motor; (3) and (3) controlling the pump body to lift the rotating speed of the water pump or stop working according to the comparison result in the step (2), and carrying out backwashing by refluxing water in the floating water pump when the pump body stops working. When the flow of the water pump is reduced and the power of the water pump is increased within a preset range in the operation process, the rotating speed of the water pump is properly increased through the control cabinet, the water flow required by a customer is ensured, when the filter screen is more and more seriously blocked and reaches the maximum using power of a water pump motor, a back washing command is started, the space between the periphery of the filter screen and the floating ring has a preset width, impurities in the floating ring and in the inner side of the filter hole can be conveniently flushed out of the floating ring, the impurities are prevented from being deposited on the inner side of the filter hole, and the back washing efficiency can be greatly.
Description
Technical Field
The invention belongs to the technical field of water pumps, and particularly relates to an anti-blocking control method for a floating pump.
Background
Because the emergency flood drainage and emergency rescue has many specificities, such as the emergency of an event, the urgency of emergency rescue, the complexity of a working face, the safety of operation, the randomness of construction environment, the environmental protection of a working site, the arbitrariness of time, the long continuous working time and the like, the emergency flood drainage and emergency rescue also puts forward higher and more professional requirements on corresponding equipment. In order to solve the problems that a pump used for drainage is a common pump, the volume and the weight of the pump are large, external hoisting equipment or a heavy transport tool is required to be matched for use, the defects of high energy consumption, small drainage quantity, low disaster relief reaction speed, heavy movement, incapability of adjusting the discharge capacity and the like exist, and therefore a large-flow floating pump is often adopted to replace the common pump.
Emergent drainage emergency rescue in-process, quality of water is poor, aquatic debris is many, and debris are not of uniform size, the phenomenon of jam water pump often appears, and the work efficiency of tight ghost image sound water pump, among the prior art, when the water pump when taking out the medium that sewage or impurity are many, the continuous attached lid by impurity of water pump filter screen surface leads to water pump flow to last to descend, and the operation just need be carried the water pump up to clear up impurity, just can normally work, and the operation is very troublesome.
In summary, it is desirable to provide an anti-clogging control method for a floating water pump, which can improve the back washing efficiency, prevent the blockage of impurities, and improve the working efficiency.
Disclosure of Invention
The invention aims to provide an anti-blocking control method of a floating water pump, which can improve the back washing efficiency, prevent sundries from blocking and improve the working efficiency.
The above purpose is realized by the following technical scheme: the utility model provides a floating pump prevents blockking up control method, floating pump includes the pump body and floating collar, the pump body is connected with the floating collar is detachable, the floating collar is equipped with the holding chamber, the inlet opening setting of the pump body is in the holding intracavity, the floating collar is equipped with the water inlet that is used for communicateing external world and holding chamber, the water inlet department swing joint of floating collar has the filter screen, floating pump prevents blockking up control method specifically includes following step:
(1) monitoring the power of a driving motor of the pump body;
(2) comparing the monitored power of the driving motor with a predetermined power and a maximum used power of the driving motor;
(3) and (3) controlling the pump body to lift the rotating speed of the water pump or stop working according to the comparison result in the step (2), wherein water in the floating water pump flows back for backwashing when the pump body stops working, and the filter screen moves outwards relative to the floating ring at the moment so that the periphery of the filter screen and the floating ring have a distance with a preset width.
During the operation of the invention, when the filter screen slowly begins to be blocked, a great deal of impurities enter the accommodating cavity from the filter holes, the flow of the water pump is reduced, when the power of the water pump is increased within a preset range, the rotating speed of the water pump is properly increased through the control cabinet at the moment, the water flow required by customers is ensured, when the filter screen is more and more seriously blocked and reaches the maximum using power of a water pump motor, a back washing command is started, the method of water backflow in a water pump water pipe is stopped to flush impurities on the outer surface of the filter screen, the specific structure of the filter screen and the specific connection mode of the filter screen and the floating ring are adopted, when water is pumped, the periphery of the filter screen is tightly attached to the floating ring under the action of water pressure, water enters the floating ring from the filter holes, the filter screen plays a role of isolating impurities, when the power of a driving motor of the water pump is increased to the maximum using power, the, The inside water of water pipe's thrust effect is outwards removed down for there is the interval of predetermined width with the floating collar around the filter screen, conveniently washes outside the floating collar the debris of floating collar and filtration pore inboard, avoids its deposition at the filtration pore inboard, can improve back flush efficiency greatly, can prevent that debris from blockking up the water pump, and the artifical clearance volume that can reduce impurity in a large number simultaneously improves the work efficiency of water pump, especially when fighting a flood and speedily carrying out rescue work.
The predetermined power of the driving motor power described herein may be adjusted according to actual conditions, and is generally controlled to be 70% to 80% of the maximum power of the driving motor.
In the specific application process, the preferred floating ring adopts a two-part structure and comprises a first separated body and a second separated body, the side surface of the floating ring is arranged in a downward inclined mode, and the filter screen is preferably arranged at the bottom of the floating ring and the side part of the downward inclined mode, so that sundries can be conveniently discharged during backwashing.
In addition, the integrated structure of the filter screen and the floating ring is adopted, the filter screen and the floating ring are in a split connection mode, and the integrated structure can be quickly assembled and disassembled on site, so that the integrated structure of the traditional filter screen and the pump body is changed, the floating ring filter screen of the water pump and the pump body can be assembled and disassembled on site, the floating ring filter screen is installed only when the water pump is launched, the portability of the water pump in transportation is improved, the volume of the water pump is reduced, and the water pump is convenient to store; secondly, the surface area of a water pump filter screen can be increased by adopting a floating ring filter screen integrated structure, and the weight and the volume of carrying and storing a single water pump are not influenced; the floating ring filter screen integral type structure is simpler once more, and the outward appearance is more pleasing to the eye, and the floating ring filter screen merges together to the floating ring adopts special structural design, guarantees when normal drainage operation, and the water pump suspension reduces its surface of water and submarine debris of inhaling.
And (3) controlling the pump body to increase the rotating speed of the water pump when the power of the driving motor is increased to reach a preset range, and controlling the pump body to stop working when the power of the driving motor is increased to reach the maximum using power so as to enable water in the floating water pump to flow back for backwashing. The predetermined range of the power of the driving motor can be adjusted according to actual conditions, and is generally controlled to be 70% -80% of the maximum power of the driving motor.
The method comprises the following steps that a step (1) of monitoring the flow of the floating water pump is further included, a step (2) of comparing the flow of the monitored floating water pump with the flow of the normal operation of the flow pump is further included, the pump body is controlled to stop working in the step (3) and restart after backflushing treatment, if the flow of the floating water pump monitored in the step (2) is lower than the flow of the normal operation, the pump body is controlled to stop working again to perform backflushing in the step (3), and when the pump body is controlled to stop working continuously and start for a preset time, the flow of the floating water pump is still lower than the flow of the normal operation, the floating water pump is controlled to stop working and give an alarm.
So, simultaneously through control water pump power and water pump flow value, feedback filter screen impurity whether by the clean up, if not the clean up then backwash once more, can block up automatic shutdown under the serious condition simultaneously, the protection motor realizes unmanned on duty's continuous normal work. The pump body is controlled to stop working continuously and start for a predetermined number of times, preferably three times.
The technical scheme is that the floating pump comprises a control system, the control system can monitor the power of the driving motor and the flow rate of the floating pump in the step (1), the control system compares the monitored value with a preset value in the step (2), and the control system controls the rotating speed of the water pump and the starting and stopping of the driving motor according to the comparison result in the step (2) in the step (3). The main control unit of the control system is a frequency converter which can feed back parameters such as motor power, motor current, motor voltage and the like and is a key control component for automatic backwashing. The automatic control of the floating water pump can be realized by the aid of the control system, and work efficiency is improved.
The technical scheme is that a sealed cavity is arranged in the floating ring, a water injection and drainage device for injecting and draining water into and into the floating ring is arranged at the bottom of the floating ring, a vent valve is arranged at the top of the floating ring, a liquid level sensor is arranged on the surface of the floating ring, and the water injection and drainage device and the liquid level sensor are in signal connection with the control system; the control system controls the water injection and drainage device to inject water into the floating ring until the liquid level signal value received by the control system is equal to the preset flooding depth.
So, can realize the control of the depth of flooding of the water pump in water, when launching and going out water at the water pump, the depth of flooding is more easy to operate less, when the normal pumping operation, require the water pump to have certain depth of flooding and can not suck the air, so the step that the whole apparatus operates is, the pumping drainage water pump is out of work when just launching, the floating collar the inside is the cavity full of gas, when the apparatus moves to the place of certain depth of water, start the pumping drainage water pump and fill water to the floating collar, make the floating collar sink, until the water pump does not suck the air position, when needing to retrieve the water pump, start the pumping drainage water pump and discharge the water of the floating collar, make the floating collar float, then break away from the surface of water the whole water pump, move to the bank.
The floating ring is formed by a plurality of split bodies, and the split bodies surround to form an accommodating cavity. So set up, dismantle, simple and convenient, but on-the-spot rapid Assembly and dismantlement, easily deposit and transport.
A further technical scheme is, the filter screen includes the mounting bracket and sets up net piece on the mounting bracket, the net piece is equipped with a plurality of filtration pores, the mounting bracket is equipped with the slide bar, the floating collar is equipped with the mounting hole, the slide bar sets up in the mounting hole and can follow the axis of mounting hole slides, the length of mounting hole is more than or equal to the length of slide bar, being equipped with of mounting hole is used for preventing the spacing groove of slide bar roll-off. So set up, on the one hand guarantee that the filter screen hugs closely the floating collar all around when drawing water, on the other hand guarantees that the filter screen can not drop with the floating collar during back flush, plays spacing effect.
The further technical scheme is that the filtering holes are convex holes protruding outwards from the floating ring, and the convex holes can be opened outwards from the floating ring. So set up, can form great water velocity when the back flush and wash away impurity, and can make the filtration pore outwards open when the back flush, mobilizable filtration pore can wash away surface attachment fast, can also reduce the adhesive force of impurity on the filter screen, makes impurity be difficult to plug up the filtration pore. Preferably, the filtering holes are tapered holes which are gradually reduced from inside to outside.
The technical scheme is that the convex hole is formed by a plurality of opening and closing sheets, one end of each opening and closing sheet is connected with the net piece, the opening and closing sheets can turn over to two sides of the opening and closing sheets within a preset range, and adjacent opening and closing sheets are mutually supported when the convex hole is inwards closed to a preset position. So set up, the piece that opens and shuts can make the great and diminish to a certain extent of filtration pore respectively when its both sides upset in the predetermined range under hydraulic effect, makes the filtration pore outwards open when above-mentioned structure guarantees the back flush on the one hand, and on the other hand avoids it to collapse the protruding hole because of water pressure and influence the inflow when guaranteeing to draw water.
The further technical scheme is that a deformation space is arranged between the opening and closing sheets, and the opening and closing sheets are made of elastic materials or soft plastics. Thus, a space is provided for turning between the opening and closing sheets, and those skilled in the art will understand that the opening and closing sheets do not necessarily need to have elasticity, i.e., do not necessarily have the ability to restore their original shapes, and the turning to both sides is driven by water pressure.
The technical scheme is that a cooling water jacket is sleeved on a driving motor of the pump body, the inner wall of the cooling water jacket is tightly attached to the shell of the driving motor, a cooling cavity is arranged in the cooling water jacket, a flow guide water channel is arranged on the floating ring, a water inlet of the flow guide water channel is formed in a guide vane body of the pump body, a water outlet of the flow guide water channel is connected with a water inlet of the cooling cavity, and a water outlet of the cooling cavity is formed in a water inlet of the pump body. So set up, through the water intaking of guide vane body department at the pump body of the water pump, in the cooling cavity of the water conservancy diversion water course drainage on the floating collar supporting cooling jacket with water pump driving motor, cooling water flows through cooling jacket and takes away the driving motor heat, then flows to the water inlet of the pump body, takes away the water that has the heat, increases rivers and driving motor's heat exchange efficiency, is favorable to the driving motor's of the pump body heat-sinking capability, prevents the overheated damage of motor. According to the structure of the water pump, namely the relation of positive pressure and negative pressure at different structures when the water pump pumps water, the water inlet of the water guide channel and the water outlet of the cooling cavity are reasonably arranged. Preferably, the cooling water jacket adopts a half-split structure, and is sleeved on the shell of the driving motor after being connected, so that the cooling water jacket is convenient to mount and dismount.
In the specific assembling process, the pump body is integrally assembled, the cooling water jacket is installed on a driving motor of the pump body, then the filter screen is installed on the side face of the floating ring through the slide rod, the floating ring is fixedly connected with the pump body, and finally the filter screen on the bottom face is installed on the bottom face of the floating ring through the slide rod.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic structural view of a floating pump according to an embodiment of the present invention;
FIG. 2 is an exploded view of a floating pump according to an embodiment of the present invention;
FIG. 3 is a side view of a floating pump according to an embodiment of the present invention;
FIG. 4 is a front view of a floating pump according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view taken along plane B-B of the floating water pump of FIG. 4;
FIG. 6 is a schematic sectional view of a floating pump according to another embodiment of the present invention;
fig. 7 is a schematic view of a screen according to an embodiment of the present invention.
In the figure:
1 pump body 2 floating ring 3 filter screen 4 mounting rack
5 meshes 6 filtering holes 7 slide bar 8 first split body
9 second part 10 cooling water jacket 11 piece 12 deformation space
13 drive motor 14 guide vane body 15 guide water channel 16 cooling cavity
17 water injection and drainage device 18 breather valve 19 cooling cavity water inlet 20 cooling cavity water outlet
21 sealed cavity
Detailed Description
The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.
The embodiment of the invention is as follows, as shown in fig. 1-7, an anti-clogging control method of a floating pump, the floating pump comprises a pump body 1 and a floating ring 2, the pump body 1 is detachably connected with the floating ring 2, the floating ring 2 is provided with an accommodating cavity, a water inlet of the pump body 1 is arranged in the accommodating cavity, the floating ring 2 is provided with a water inlet for communicating the outside with the accommodating cavity, a filter screen 3 is movably connected at the water inlet of the floating ring 2, and the anti-clogging control method of the floating pump specifically comprises the following steps:
(1) monitoring the power of the drive motor 13 of the pump body 1;
(2) comparing the monitored power of the driving motor 13 with a predetermined power and a maximum used power of the driving motor 13;
(3) and (3) controlling the pump body 1 to increase the rotating speed of the water pump or stop the pump body 1 according to the comparison result in the step (2), backwashing the floating water pump and water in the water pipe when the pump body 1 stops working, and enabling the periphery of the filter screen 3 to have a distance with a preset width from the floating ring 2 when the filter screen 3 moves outwards relative to the floating ring 2.
In the running process of the invention, when the filter screen 3 slowly begins to be blocked, a great deal of sundries enter the accommodating cavity from the filter holes 6, the flow of the water pump is reduced, when the power of the water pump is increased within a preset range, the rotating speed of the water pump is properly increased through the control cabinet at the moment, the water flow required by customers is ensured, when the filter screen 3 is more and more severely blocked and reaches the maximum using power of the water pump motor, a back flushing command is started, the method for enabling the water in the water pump water pipe to flow back is stopped, impurities on the outer surface of the filter screen 3 are washed away, the specific structure of the filter screen 3 and the specific connection mode of the filter screen 3 and the floating ring 2 are adopted, when water is pumped, the periphery of the filter screen 3 is tightly attached to the floating ring 2 under the action of water pressure, the water enters the floating ring 2 from the filter holes 6, the filter screen 3 plays a role in isolating sundries, when the power, at this moment, the filter screen 3 moves outwards under the action of the thrust of the water in the floating pump and the water pipe, so that the space between the periphery of the filter screen 3 and the floating ring 2 with a preset width is reserved, impurities in the floating ring 2 and in the inner side of the filter holes 6 can be conveniently flushed out of the floating ring 2, the impurities are prevented from depositing in the filter holes 6, the backwashing efficiency can be greatly improved, the water pump can be prevented from being blocked by the impurities, meanwhile, the manual cleaning amount of the impurities can be greatly reduced, the working efficiency of the water pump is improved, and especially, the water pump is resistant to flood rush.
The predetermined power of the driving motor 13 may be adjusted according to actual conditions, and is generally controlled to be 70% to 80% of the maximum power of the driving motor 13.
In the specific application process, the floating ring 2 is preferably of a two-part structure and comprises a first part 8 and a second part 9, the side surface of the floating ring 2 is arranged in a downward inclined mode, and the filter screen 3 is preferably arranged at the bottom of the floating ring 2 and the side part of the downward inclined mode, so that sundries can be conveniently discharged during backwashing.
In addition, as shown in fig. 2, the integrated structure of the filter screen 3 and the floating ring 2 is adopted, the filter screen 3 and the floating ring 2 are in a split connection mode, and can be quickly assembled and disassembled on site, on one hand, the integrated structure of the traditional filter screen 3 and the pump body 1 is changed, so that the filter screen 3 of the floating ring 2 of the water pump and the pump body 1 can be assembled and disassembled on site, and the filter screen 3 of the floating ring 2 of the water pump is only installed when the water pump is launched, so that the portability of the water pump is improved, the volume of; secondly, the surface area of the filter screen 3 of the water pump can be increased by adopting an integrated structure of the floating ring 2 and the filter screen 3, and the weight and the volume of carrying and storing a single water pump are not influenced; 2 filter screens 3 integral type structures of floating collar 2 once more are simpler, and the outward appearance is more pleasing to the eye, and 2 filter screens 3 of floating collar merge together to floating collar 2 adopts special structural design, guarantees that the water pump suspension is in the aquatic when normal drainage operation, reduces its surface of water and submarine debris of inhaling.
On the basis of the above embodiment, in another embodiment of the present invention, in step (2) and step (3), when the power of the driving motor 13 is increased to reach a predetermined range, the pump body 1 is controlled to increase the rotation speed of the water pump, and when the power of the driving motor 13 is increased to reach the maximum power, the pump body 1 is controlled to stop working, so that the water in the floating water pump and the water pipe flows back to perform backwashing. The predetermined range of the power of the driving motor 13 can be adjusted according to actual conditions, and is generally controlled to be 70% to 80% of the maximum power of the driving motor 13.
On the basis of the above embodiment, in another embodiment of the present invention, the step (1) further includes a step of monitoring the flow rate of the floating pump, the step (2) further includes a step of comparing the monitored flow rate of the floating pump with the flow rate of the normal operation of the flow pump, the step (3) controls the pump body 1 to stop operating and to restart the pump body 1 after performing the backwashing treatment, if the flow rate of the floating pump monitored in the step (2) is lower than the flow rate during the normal operation, the step (3) controls the pump body 1 to stop operating again and to perform the backwashing, and when the pump body 1 is controlled to stop operating continuously and the flow rate of the floating pump after starting for a predetermined number of times is still lower than the flow rate during the normal operation, the step (1) controls the floating pump.
So, simultaneously through control water pump power and water pump flow value, feedback filter screen 3 impurity is by the clean up, if not the clean up then backwash once more, can block up automatic shutdown under the serious condition simultaneously, the protection motor realizes unmanned on duty's continuous normal work. The pump body 1 is controlled to stop working continuously and to start for a predetermined number of times, preferably three times.
On the basis of the above embodiment, in another embodiment of the present invention, the floating pump includes a control system, the control system may monitor the power of the driving motor 13 and the floating pump flow rate in step (1), the control system compares the monitored value with a predetermined value in step (2), and the control system controls the rotation speed of the water pump and the start and stop of the driving motor 13 according to the comparison result in step (2) in step (3). The main control unit of the control system is a frequency converter which can feed back parameters such as motor power, motor current, motor voltage and the like and is a key control component for automatic backwashing. The automatic control of the floating water pump can be realized by the aid of the control system, and work efficiency is improved.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 6, a sealed cavity 21 is formed inside the floating ring 2, a water injection and drainage device 17 for injecting and draining water into and into the floating ring 2 is arranged at the bottom of the floating ring 2, a vent valve 18 is arranged at the top of the floating ring, a liquid level sensor is arranged on the surface of the floating ring 2, and the water injection and drainage device 17 and the liquid level sensor are in signal connection with the control system; the liquid level sensor is used for detecting the flooding depth of the floating water pump, the liquid level sensor transmits a detected liquid level signal value to the control system, the control system compares the received liquid level signal value with a preset flooding depth, when the liquid level signal value received by the control system is larger than the preset flooding depth, the control system controls the water injection and drainage device 17 to discharge water in the floating ring until the liquid level signal value received by the control system is equal to the preset flooding depth, and when the liquid level signal value received by the control system is smaller than the preset flooding depth, the control system controls the water injection and drainage device 17 to inject water into the floating ring until the liquid level signal value received by the control system is equal to the preset flooding depth.
So, can realize the control of the depth of flooding of the water pump in water, when launching and going out water at the water pump, the depth of flooding is more easy to operate less, when the normal pumping operation, require the water pump to have certain depth of flooding and can not suck the air, so the step of the operation of the whole apparatus is, the pumping drainage water pump is out of work when just launching, the floating collar the inside is the cavity full of gas, when the apparatus moves to the place of certain depth of water, start the pumping drainage water pump to fill water to the floating collar, make the floating collar 2 sink, until the water pump does not suck the air position, when needing to retrieve the water pump, start the pumping drainage water pump and discharge the water of the floating collar, make the floating collar float, then break away from the surface of water the whole water pump, move to the bank.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 2 and 4, the floating ring 2 is composed of a plurality of separate bodies, and the separate bodies surround to form an accommodating cavity. So set up, dismantle, simple and convenient, but on-the-spot rapid Assembly and dismantlement, easily deposit and transport.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 3 and 7, the filter screen 3 includes a mounting frame 4 and a mesh 5 disposed on the mounting frame 4, the mesh 5 has a plurality of filter holes 6, the mounting frame 4 has a slide rod 7, the floating ring 2 has a mounting hole, the slide rod 7 is disposed in the mounting hole and can slide along an axis of the mounting hole, the length of the mounting hole is greater than or equal to the length of the slide rod 7, and the mounting hole is provided with a limiting groove for preventing the slide rod 7 from sliding out. So set up, filter screen 3 hugs closely floating ring 2 all around when guaranteeing to draw water on the one hand, and filter screen 3 can not drop with floating ring 2 when on the other hand guarantees the back flush, plays spacing effect.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 7, the filtering holes 6 are convex holes protruding outward from the floating ring 2, and the convex holes can be opened outward from the floating ring 2. So set up, can form great water velocity and wash away impurity when the back flush, and can make filtration pore 6 outwards open when the back flush, mobilizable filtration pore 6 can wash away surface attachment fast, can also reduce the adhesive force of impurity on filter screen 3, makes impurity be difficult to plug up filtration pore 6. Preferably, the filtering holes 6 are tapered holes which are gradually reduced from inside to outside.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 7, the convex hole is formed by a plurality of opening and closing sheets 11, one end of each opening and closing sheet 11 is connected to the mesh 5, the opening and closing sheets 11 can be turned over to both sides within a predetermined range, and the adjacent opening and closing sheets 11 are mutually supported when the convex hole is inwardly closed to a predetermined position. So set up, opening and shutting piece 11 can be under hydraulic effect in the predetermined range when its both sides upset, can make filtration pore 6 grow and diminish to a certain extent respectively, makes filtration pore 6 outwards open when the back flush is guaranteed on the one hand to above-mentioned structure, and on the other hand avoids it to collapse the protruding hole because of water pressure and influence the inflow when guaranteeing to draw water.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 7, a deformation space 12 is disposed between the opening and closing sheets 11, and the opening and closing sheets 11 are made of elastic material or soft plastic. Thus, a space is provided for the turning between the opening and closing sheets 11, and it should be understood by those skilled in the art that the opening and closing sheets 11 do not necessarily need to have elasticity, i.e. the ability to restore their original shape, and the turning to both sides is driven by water pressure.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 2 and 5, a cooling water jacket 10 is sleeved on a driving motor 13 of the pump body 1, an inner wall of the cooling water jacket 10 is tightly attached to an outer shell of the driving motor 13, a cooling cavity 16 is arranged in the cooling water jacket 10, the floating ring 2 is provided with a diversion water channel 15, a diversion water channel water inlet 19 is arranged at a guide vane body 14 of the pump body 1, a diversion water channel water outlet 20 is connected to a water inlet of the cooling cavity 16, and a water outlet of the cooling cavity 16 is arranged at a water inlet of the pump body 1. So set up, through the water intaking in the guide vane body 14 department of the pump body 1 at the water pump, in the cooling chamber 16 of the cooling jacket 10 that matches with water pump driving motor 13 is drained to the water conservancy diversion water course 15 on the floating collar 2, cooling water flows through cooling jacket 10 and takes away driving motor 13 heat, then flows to the water inlet of the pump body 1, take away having the heat water, increase rivers and driving motor 13's heat exchange efficiency, be favorable to the heat-sinking capability of the driving motor 13 of the pump body 1, prevent the motor overheat damage. According to the arrangement mode, a cooling water source for providing power is not needed, the flow guide water channel 15 is designed in the floating ring 2, and according to the structure of the water pump, namely the positive and negative pressure relation of different structures when the water pump pumps water, the water inlet of the flow guide water channel 15 and the water outlet of the cooling cavity 16 are reasonably arranged. Preferably, the cooling water jacket 10 adopts a half-split structure, and is sleeved on the shell of the driving motor 13 after being connected, so that the installation and the disassembly are convenient.
In the specific assembling process, firstly, the pump body 1 is integrally assembled, the cooling water jacket 10 is installed on the driving motor 13 of the pump body 1, then the filter screen 3 is installed on the side surface of the floating ring 2 through the slide rod 7, then the floating ring 2 is fixedly connected with the pump body 1, and finally the filter screen 3 on the bottom surface is installed on the bottom surface of the floating ring 2 through the slide rod 7.
It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (10)
1. The anti-blocking control method of the floating pump is characterized in that the floating ring is provided with an accommodating cavity, a water inlet of the pump body is arranged in the accommodating cavity, the floating ring is provided with a water inlet for communicating the outside with the accommodating cavity, a filter screen is movably connected to the water inlet of the floating ring, and the anti-blocking control method of the floating pump specifically comprises the following steps:
(1) monitoring the power of a driving motor of the pump body;
(2) comparing the monitored power of the driving motor with a predetermined power and a maximum used power of the driving motor;
(3) and (3) controlling the pump body to lift the rotating speed of the water pump or stop working according to the comparison result in the step (2), wherein water in the floating water pump flows back for backwashing when the pump body stops working, and the filter screen moves outwards relative to the floating ring at the moment so that the periphery of the filter screen and the floating ring have a distance with a preset width.
2. The anti-clogging control method for the floating water pump according to claim 1, wherein in the step (2) and the step (3), when the power of the driving motor is increased to a predetermined range, the pump body is controlled to increase the rotation speed of the water pump, and when the power of the driving motor is increased to a maximum power, the pump body is controlled to stop working, so that the water in the floating water pump flows back for backwashing.
3. The anti-clogging control method for the floating pump according to claim 2, characterized in that the step (1) further comprises a step of monitoring the flow rate of the floating pump, the step (2) further comprises a step of comparing the monitored flow rate of the floating pump with the flow rate of the normal operation of the floating pump, the step (3) controls the pump body to stop operating and to restart the pump body after performing the backwashing treatment, if the flow rate of the floating pump monitored in the step (2) is lower than the flow rate during the normal operation, the step (3) controls the pump body to stop operating again and to perform the backwashing, and when the pump body is controlled to stop operating continuously and the flow rate of the floating pump is still lower than the flow rate during the normal operation after starting for a predetermined number of times, the step (1) controls the floating pump to stop operating and.
4. The anti-clogging control method for the floating water pump according to claim 3, wherein the floating water pump comprises a control system, the control system can monitor the power of the driving motor and the flow rate of the floating water pump in the step (1), the control system compares the monitored value with a preset value in the step (2), and the control system controls the rotation speed of the water pump and the start and stop of the driving motor according to the comparison result in the step (2) in the step (3).
5. The anti-clogging control method for the floating water pump according to claim 4, wherein a sealed cavity is arranged inside the floating ring, a water injection and drainage device for injecting and draining water into and into the floating ring is arranged at the bottom of the floating ring, a vent valve is arranged at the top of the floating ring, a liquid level sensor is arranged on the surface of the floating ring, and the water injection and drainage device and the liquid level sensor are in signal connection with the control system; the control system controls the water injection and drainage device to inject water into the floating ring until the liquid level signal value received by the control system is equal to the preset flooding depth.
6. The anti-clogging control method for the floating water pump according to any one of claims 1 to 5, wherein the floating ring is composed of a plurality of split bodies, and the plurality of split bodies surround and form an accommodating cavity.
7. The anti-clogging control method for the floating water pump according to any one of claims 1 to 5, wherein the filter screen comprises a mounting frame and a mesh arranged on the mounting frame, the mesh is provided with a plurality of filter holes, the mounting frame is provided with a slide rod, the floating ring is provided with a mounting hole, the slide rod is arranged in the mounting hole and can slide along the axis of the mounting hole, the length of the mounting hole is greater than or equal to that of the slide rod, and the mounting hole is provided with a limiting groove for preventing the slide rod from sliding out.
8. The anti-clogging control method for a floating water pump according to claim 7, wherein the filter hole is a convex hole protruding outward from the floating collar, and the convex hole is capable of being opened outward from the floating collar.
9. The anti-clogging control method for a floating water pump according to claim 8, wherein the convex hole is formed by a plurality of opening and closing pieces, one end of each opening and closing piece is connected to the net piece, the opening and closing pieces can be turned over to both sides within a predetermined range, and adjacent opening and closing pieces are supported by each other when the convex hole is inwardly closed to a predetermined position.
10. The anti-clogging control method for the floating water pump according to any one of claims 1 to 5, wherein a cooling water jacket is sleeved on the driving motor of the pump body, an inner wall of the cooling water jacket is tightly attached to a housing of the driving motor, a cooling cavity is arranged in the cooling water jacket, the floating ring is provided with a water guide channel, a water inlet of the water guide channel is arranged at the guide vane body of the pump body, a water outlet of the water guide channel is connected with a water inlet of the cooling cavity, and a water outlet of the cooling cavity is arranged at a water inlet of the pump body.
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| CN201811184742.9A CN109236676B (en) | 2018-10-11 | 2018-10-11 | Anti-blocking control method for floating pump |
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| CN110926033B (en) * | 2019-11-08 | 2021-07-16 | 华帝股份有限公司 | Anti-sticking control method for zero-cold-water gas hot water built-in water pump |
| CN111365266A (en) * | 2020-03-31 | 2020-07-03 | 中煤科工集团重庆研究院有限公司 | Maintenance method and system of wet dust removal fan |
| CN111570128B (en) * | 2020-05-09 | 2021-08-17 | 广州极飞科技股份有限公司 | Spraying control method, device, system, carrier and storage medium |
| CN112065734B (en) * | 2020-09-16 | 2022-03-25 | 长沙迪沃机械科技有限公司 | Flow control method of sewage pump |
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