CN104061171B - Water circulation system and centrifugal water pump - Google Patents

Water circulation system and centrifugal water pump Download PDF

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Publication number
CN104061171B
CN104061171B CN201410270812.8A CN201410270812A CN104061171B CN 104061171 B CN104061171 B CN 104061171B CN 201410270812 A CN201410270812 A CN 201410270812A CN 104061171 B CN104061171 B CN 104061171B
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CN
China
Prior art keywords
water
pump
described
provided
centrifugal
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CN201410270812.8A
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Chinese (zh)
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CN104061171A (en
Inventor
赵海东
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浙江浪神泵业科技有限公司
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Priority to CN201410270812.8A priority Critical patent/CN104061171B/en
Publication of CN104061171A publication Critical patent/CN104061171A/en
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Publication of CN104061171B publication Critical patent/CN104061171B/en

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Abstract

The invention discloses a kind of water circulation system and centrifugal water pump, this centrifugal water pump includes that pump head, pump head are provided with outlet;Being provided with current inductive switch in outlet, water-flow signal is fed back in control circuit board by current inductive switch;This water circulation system includes centrifugal water pump, water source end, user water side, check valve, water heater;Described water source end is connected with the water inlet end of water heater and the cooling water outlet pipeline of user water side respectively, and the water side of water heater is connected with the water inlet conduit of centrifugal water pump, and the outlet of centrifugal water pump is connected with the hot-water outlet conduits of user water side;User's outfan is connected with the water inlet end pipeline of water heater;Being additionally provided with a lateral on pipeline between the hot water outlet of centrifugal water pump and user water side, this lateral is connected on the pipeline between the cooling water outlet of water source end and user water side it is an advantage of the current invention that to realize remote control centrifugal water pump by check valve.

Description

Water circulation system and centrifugal water pump

Technical field

The invention belongs to water pump field, be specifically related to a kind of water circulation system and centrifugal water pump.

Background technology

Centrifugal water pump is mainly widely used in the water circulation system in the life of people, generally makes With centrifugal water pump for the various occasions needing circulation, hot water circuit on such as household ground heating, Boiler circulates, and water heater cold water pipe circulates.Existing centrifugal water pump is typically only capable to enough pass through people For on centrifugal water pump operation centrifugal water pump is turned on and off;When opening and closing every time If being required for artificial going to control, then waste the substantial amounts of time, the most impracticable;Therefore set Count and a kind of can be a need for by the centrifugal water pump remotely controlled.

Summary of the invention

In order to overcome the deficiencies in the prior art, the present invention provides can be by the one remotely controlled Water circulation system and centrifugal water pump.

Present invention employs following technical scheme: a kind of centrifugal water pump, this centrifugal water pump includes pump Body and control device, controls device and is arranged on the side of the pump housing and one end is provided with supply unit And inside control device, it is provided with control circuit board, control circuit board is contained within delay switch circuit, Delay switch circuit is for closing motor according to setting value;The pump housing includes pump head and and pump head The machine barrel matched, pump body is provided with motor, by motor-driven impeller;Described motor by Control device to control to start;Described pump head is provided with outlet;Described outlet is arranged Current inductive switch, described current inductive switch is had to be fed back in control circuit board by water-flow signal; Also including that housing, the rotor of described motor are arranged in housing, housing is provided with capping, The axle of rotor coordinates through capping with impeller;Being provided with runner inside housing, capping is provided with stream The discharge orifice in road, runner is provided with drainage screen;Be provided with inside described pump head be interconnected intake antrum with And water chamber, it is provided with mounting groove between intake antrum and water chamber;Secure fit pump head in mounting groove Capping;One end of described impeller is connected with the rotor of motor, the other end stretch in pump head with pump head Capping is rotating, and pump head capping uses ultrasonic bonding with pump head.

Use this structure, after installing centrifugal water pump, due to user open faucet make from Water in heart pump outlet starts flowing, causes current inductive switch to be touched, current sense Pass the signal along to during inductive switch shake-up that the control circuit board of control device controls motor start Running, finally makes centrifugal water pump start working;When user closes faucet, inductive switch Stopping operating, water pump quits work.The closedown of centrifugal water pump can also be pre-on control circuit board If the time of running, when faucet is opened, water pump is started working, and the running time reaches preset value Time, water pump quits work.Housing uses this structure that the water of part can be facilitated to enter shielding Set is internal plays lubrication, the effect of cooling rotor;Use the setting of drainage screen, anti-fastening On son, some magazines absorption in water is caused rotor on the sidewall of housing by the effect of Magnet Stuck;Use this structure can promote water pump service life.

Wherein, described outlet is provided with the current inductive switch upper cover coordinated with pump head, water Influenza inductive switch upper cover lower end coordinates with pump head fixing seal, and current inductive switch upper cover upper end is stretched Enter to control in device.

Wherein, described current inductive switch includes water flow switch impeller, is fixed on water flow switch leaf Magnetic devices above wheel;Described water flow switch wheel rotation is arranged on pump head outlet, magnetic Property device is positioned in current inductive switch upper cover;Controlling to be provided with Hall element in device, current are opened When closing wheel rotation, Hall element passes the signal along in control circuit board according to changes of magnetic field.

Use the current inductive switch of this structure so that the sensing of current inductive switch is more Sensitive;Drive water flow switch wheel rotation when water movement in outlet, therefore Magnet is also And then rotate, thus cause magnetic field to produce change, Hall element when sensing changes of magnetic field, Being fed back to by signal in control circuit board, control circuit board controls motor and comes into operation, thus from Edema with the heart involved pump is started working, when faucet is closed, and the differential water pressures around water flow switch wheel rotor is 0, then water flow switch wheel rotor would not rotate, and therefore centrifugal water pump quits work, or When water pump operation reaches preset value, control device and force to stop pump working.

Wherein, described machine barrel uses BMC once injection moulding, and pump head uses plastics Material disposal molding.

Machine barrel uses BMC disposal molding motor encapsulation technology to make machine barrel and motor Inductance loop seclusion, and the design of its structure of good seal performance is simple, BMC/DMC.It is a kind of Superior insulant, excellent electric property, mechanical performance, thermostability, chemical resistance, High flame resistance and proof voltage performance, solve motor easily make moist, corrosion, water inlet, resistance to not High temperature, motor burns out, and makes water pump can use under any rugged environment.Substantially increase Service life.

Wherein, described current inductive switch includes the fixed support being arranged in pump head outlet;Institute Stating slides in fixed support is provided with magnetic devices;One end of described magnetic devices and fixed support One end offseted by spring;Described current inductive switch upper cover is provided with Hall element;Water The out-of-date magnetic devices that circulates is compressed near Hall element due to the effect of current, Hall element root Pass the signal along in control circuit board according to changes of magnetic field.

Use the current inductive switch of this structure so that the sensing of current inductive switch is more Sensitive;Magnetic devices compression spring is driven, when magnetic devices pressure during water movement in outlet Being reduced near Hall element, thus cause magnetic field to produce change, Hall element is sensing magnetic field During change, being fed back to by signal in control circuit board, control circuit board controls motor and comes into operation, Thus centrifugal water pump is started working.

Wherein, described magnetic devices is permanent magnetic iron.

Permanent magnetic iron is used to be because permanent magnetism relatively high magnetism as magnetic devices and stablize.

Wherein, described control device includes frequency-variable controller, and described frequency-variable controller controls Motor.During life uses, usually there will be hot water during opening, open cold Faucet water, the hydraulic pressure of hot water can diminish, and the rotating speed improving motor hence with converter can Situation about diminishing greatly effectively to avoid this hydraulic pressure to become.

Wherein, described power input includes Chinese character pin-shaped socket and plug, and socket is positioned at Controlling on device, the bottom surface of socket is provided with inserted sheet;Described plug includes each other in removable The plug overcoat of assembling conjunction and plug inner sleeve;Plug inner sleeve and plug jacket internal form sky Chamber, cavity inside is provided with terminal plastic, terminal, contact chip;Terminal plastic and plug inner sleeve Inwall is dismantled and assembled fixing;Terminal is located at inside terminal plastic;One end of terminal is with power line even Connect;Contact chip includes connecting portion and clamping part;Connecting portion is connected with terminal, and retaining part is in inserting In hole;Plug overcoat end face offers screwed hole, and screwed hole is common to power line mutually with cavity Stretch into;Also include the thread head coordinated with screwed hole;The outer wall of plug inner sleeve is provided with water proof ring; Described plug also includes power line and spigot seal structure, and this sealing structure includes wire clamp, rubber Circle;Thread head is provided with endoporus, and wire clamp is located in the endoporus of thread head, wire clamp include movable I portion, Movable II portion, movable I portion, movable II portion are circumferentially distributed and are spaced setting;Rubber ring position In the lower section of wire clamp between thread head and plug outer casing inner wall;Put in described plug and be provided with Sealing gasket, when plug inner sleeve inserts plug overcoat, the sealing gasket above plug inner sleeve and plug The cavity wall of overcoat is close to form sealing.

Using this plug and socket, first allows for people when arranging centrifugal water pump Differing in position, and uses this structure, though centrifugal water pump from power supply farther out time can also Completed by wiring, compensate for plug in prior art cannot the defect of wiring, and above-mentioned Several sealing structures so that the water resistance of plug becomes strong, goes for comparison moist In environment.

A kind of circulation, including centrifugal water pump, this circulation also include water source end, User water side, check valve, water heater;Described water source end respectively with the entering of water heater The cooling water outlet pipeline of water end (W.E.) and user water side connects, and the water side of water heater is with centrifugal The water inlet conduit of water pump connects, the outlet of centrifugal water pump and the hot water outlet of user water side Pipeline connects;User water side is connected with the water inlet end pipeline of water heater;Centrifugal water pump and use Being additionally provided with a lateral on pipeline between the hot water outlet of water side, family, this lateral leads to Cross check valve to be connected on the pipeline between the cooling water outlet of water source end and user water side.

A kind of circulation, including centrifugal water pump, this circulation also include water source end, User water side, water heater;Described water source end respectively with the water inlet end of water heater and The cooling water outlet pipeline of user water side connects, and the water side of water heater is entered with centrifugal water pump Mouth of a river pipeline connects, and the outlet of centrifugal water pump connects with the hot-water outlet conduits of user water side Connect;User water side is connected with the water inlet end pipeline of water heater;Centrifugal water pump and user's water outlet Being additionally provided with a lateral on pipeline between the hot water outlet of end, this lateral is connected to water On pipeline between source and the water inlet end of water heater.

Use the circulation of this structure, first set into one in the control device of centrifugal pump The preset value of individual pump working time;Centrifugal water pump outlet is made owing to user opens faucet In water start flowing, cause current inductive switch to be touched, current inductive switch touch time Pass the signal along to that the control circuit board of control device controls motor come into operation;User only needs Will be closed for a moment by faucet after opening faucet, water pump works in Preset Time, will Circulating chilled water in water pipe goes in heater;When in life, people use water heater, generally Need the cold water bleeding off in water pipe just can go out hot water, form the biggest water waste, use preset value Stop pump working, when people need to use hot water, it is only necessary to open faucet moment and close, Water pump is started working, and by (above-mentioned blood circulation), the cold water in water pipe is recycled to water and heats In device, (the setting time arranges the time according to concrete water pipe line length, adjustable to arrive preset value Joint duration water pump quits work), it is exactly out hot water that people are again turned on tap water pump work.

Accompanying drawing explanation

Fig. 1 is the pump housing and the explosive view of control device of the present invention;

Fig. 2 is that the pump head of the present invention seals profile with pump head;

Fig. 3 is that the pump head of the present invention seals top view with pump head;

Fig. 4 is the cooperation schematic diagram of housing of the present invention, impeller and rotor;

Fig. 5 is the explosive view of plug of the present invention;

Fig. 6 is that plug of the present invention coordinates schematic diagram with controlling device;

Fig. 7 is the profile of the embodiment of the present invention 1;

Fig. 8 is the profile of the embodiment of the present invention 2;

Fig. 9 is the profile during startup of the embodiment of the present invention 1 water flow switch, wherein indicates The magnetic field of Magnet;

Figure 10 is the profile during startup of the embodiment of the present invention 2 water flow switch, wherein represents The magnetic field of Magnet;

Figure 11 is the structure chart of the first water circulation system of the present invention;

Figure 12 is the structure chart of the second water circulation system of the present invention.

Detailed description of the invention

The present invention will be further described with embodiment below in conjunction with the accompanying drawings:

As Figure 1-5, a kind of centrifugal water pump, this centrifugal water pump includes the pump housing, controls device 1;Controlling device 1 inside and be provided with control circuit board, this control circuit board is used for controlling motor 2 Startup and closedown, integrated delay switch circuit on control circuit board, delay switch circuit is used for Closing motor 2 according to setting value, this delay switch circuit belongs to the skill that electronics aspect is conventional Art means, the circuit of panel control electric motor starting falls within prior art and does not illustrates Bright;Control device 1 and be provided with socket 11, socket 11 for coordinate with plug 12 be used for Centrifugal water pump is powered;The pump housing includes pump head 21 and the machine barrel 22 fixed with pump head 21, machine Cylinder 22 uses BMC once injection moulding, and pump head 21 uses plastics disposal molding; This is fixing can use bolt to fix, and the one side controlling device 1 and machine barrel 22 is fixed;Pump Internal portion is additionally provided with motor, impeller 24, housing 25, pump head capping 26;Impeller 24 with The rotor 23 of motor is fixing to be made impeller 24 can follow rotor 23 to rotate, the rotor of motor 23 are arranged in housing 25, and housing 25 is provided with capping 251, and the axle of rotor 23 is through envelope Lid 251 coordinates with impeller 24;The internal runner that is provided with of housing 25, capping 251 is provided with stream The discharge orifice in road, runner is provided with drainage screen 252;Pump head 21 is provided with water inlet, intake antrum 29, outlet and water chamber 28, water inlet communicates with intake antrum 29, outlet and water outlet Chamber 28 communicates, and water chamber 28 communicates with intake antrum 29, and the portion cavity of intake antrum 29 is positioned at The lower section of water chamber 28;Intake antrum 29 and water chamber 28 junction are provided with mounting groove, pump head One end of capping 26 is located in mounting groove, and pump head capping 26 uses ultrasonic bonding with mounting groove; The other end of pump head capping 26 coordinates with the lower end of impeller 24, and impeller 24 is at rotor 23 and pump Fix in rotating between head capping 26;Pump head 21 is provided with columnar member 27, this columnar member 27 Be positioned at the top of water chamber 28 and near the outlet, current inductive switch upper cover 30 with Columnar member 27 in being detachably fixed, the inside of current inductive switch upper cover 30, columnar member 27, Water chamber 28 three communicates, and current inductive switch upper cover 30 upper end is stretched into control device 1 and offered Hole in.

As seen in figs. 5-6, Chinese character pin-shaped socket 11 is arranged on control device;Plug 12 wraps Include include thread head 136, wire clamp 138, rubber ring 137, plug screw, plug overcoat 131, Terminal fixed screw, terminal plastic 133, terminal 134, contact chip 135, plug inner sleeve 132; Plug inner sleeve 132 is fixed by plug screw with plug overcoat 131, and plug inner sleeve 132 is provided with Sealing gasket 40, plug overcoat 131 seals with plug inner sleeve 132, plug inner sleeve 132 is with slotting Head overcoat 131 is internally formed cavity, and terminal plastic 133 is positioned at cavity inside to be fixed by terminal Screw is fixed with plug inner sleeve 131 inwall;Through hole, terminal is offered on terminal plastic 133 134 are located in this through hole, and one end of contact chip 135 is that connecting portion terminal 134 connects, another End is arranged in the jack of plug inner sleeve 132 for clamping part and is affixed with Socket walls, when plug 12 Insert inserted sheet in socket 1 to stretch into contact between two panels contact chip 35 thus be powered;Plug The upper end of overcoat 131 offers screwed hole, facilitates electric wire to stretch into and is connected with terminal 134;Screw thread Offering screw thread on the outer wall of 136 to be connected with screwed hole, the center of thread head 136 is opened Being provided with through hole, through-hole wall offers groove, wire clamp 138 is arranged in groove, rubber ring 137 lower sections being positioned at wire clamp 138, wire clamp 138 include wire clamp circle portion 381, movable I portion 382, Movable II portion 383, movable I portion 382, the one end in movable II portion 383 and wire clamp circle portion 381 Fixing, movable I portion 382, movable II portion 383 are in the one of the online clamping ring portion 381 that is intervally arranged Circle makes movable I portion 382, movable II portion 383 that electric wire can play the effect of clamping;Insert The outer wall of head inner sleeve 132 is provided with water proof ring 140, in plug 12 inserts socket 11, anti- Hydrosphere 14 and socket 11 inwall are close to thus are prevented water from entering;On the outer wall of plug overcoat 131 Having up and down barb I 139, the outer wall corresponding position of socket 11 is provided with barb II 121, During resting state, barb I 139 and barb II 121 phase catches on.

As Fig. 7 and Fig. 9 gives first specific embodiment party of current inductive switch of the present invention Formula, water flow switch impeller 31 is rotated by rotating shaft 32 and is fixed on water chamber 28 inside, and Water flow switch impeller 31 is arranged over permanent magnetic iron 33, and permanent magnetic iron 33 is positioned at current sensing Switch in upper cover 30 and stretch in control device 1, control device 1 corresponding position and be provided with Hall element 34;When water flow switch impeller 31 rotates, permanent magnetic iron 33 rotates, Thus magnetic field produces change, Hall element 34 senses that signal is fed back to control by changes of magnetic field In wiring board thus start centrifugal water pump.

Fig. 8 and Figure 10 gives current inductive switch of the present invention second detailed description of the invention, Water chamber 28 inwall is provided with fixed support 39, and fixed support 39 is internal offers sliding chamber 41, Slide in sliding chamber 41 and be provided with permanent magnetic iron 33, permanent magnetic iron 33 and the sidewall sliding chamber 41 Between be provided with return spring 42;Sliding chamber 41 communicates with the water chamber 28 of pump head so that current Permanent magnetic iron 33 can be driven to carry out compression retracteding position spring 42 through sliding chamber 41;Current sensing is opened Close upper cover 30 inside and be provided with Hall element 34, when there is compression in return spring 42, permanent magnetism Magnet 33 position changes, thus magnetic field produces change, and Hall element 34 senses magnetic field Signal is fed back in control circuit board thus starts centrifugal water pump by change.

As shown in figure 11, a kind of circulation, including centrifugal water pump, this circulation Also include water source end, user water side, check valve, water heater;Described water source end is respectively It is connected with the water inlet end of water heater and the cooling water outlet pipeline of user water side, water heater Water side be connected with the water inlet conduit of centrifugal water pump, the outlet of centrifugal water pump goes out with user The hot-water outlet conduits of water end (W.E.) connects;User water side connects with the water inlet end pipeline of water heater Connect;A branched pipe it is additionally provided with on pipeline between the hot water outlet of centrifugal water pump and user water side Road, this lateral by check valve be connected to water source end and user water side cooling water outlet it Between pipeline on.

As shown in figure 12, a kind of circulation, including centrifugal water pump, this circulation Also include water source end, user water side, water heater;Described water source end heats with water respectively The water inlet end of device and the cooling water outlet pipeline of user water side connect, the water side of water heater It is connected with the water inlet conduit of centrifugal water pump, the outlet of centrifugal water pump and the heat of user water side Water exit conduit connects;User water side is connected with the water inlet end pipeline of water heater;Centrifugal water A lateral it is additionally provided with, this branch on pipeline between the hot water outlet of pump and user water side Pipeline is connected on the pipeline between water source end and the water inlet end of water heater.

Claims (9)

1. a centrifugal water pump, this centrifugal water pump includes the pump housing and controls device, control device to be arranged on the side of the pump housing and one end and be provided with supply unit and control to be provided with control circuit board inside device, control circuit board is contained within delay switch circuit, and delay switch circuit is for closing motor according to setting value;The pump housing includes pump head and the machine barrel matched with pump head, and pump body is provided with motor, by motor-driven impeller;Described motor is controlled to start by controlling device;Described pump head is provided with outlet;It is characterized in that: be provided with current inductive switch in described outlet, water-flow signal is fed back in control circuit board by described current inductive switch;Also including that housing, the rotor of described motor are arranged in housing, housing is provided with capping, and the axle of rotor coordinates through capping with impeller;Being provided with runner inside housing, capping is provided with the discharge orifice of runner, and runner is provided with drainage screen;It is provided be interconnected intake antrum and water chamber inside described pump head, between intake antrum and water chamber, is provided with mounting groove;Secure fit pump head capping in mounting groove;One end of described impeller is connected with the rotor of motor, and the other end stretches in pump head and is rotating with pump head capping, and pump head capping uses ultrasonic bonding with pump head.
A kind of centrifugal water pump the most according to claim 1, it is characterized in that: described outlet is provided with the current inductive switch upper cover coordinated with pump head, current inductive switch upper cover lower end and pump head secure fit, current inductive switch upper cover upper end is stretched in control device.
A kind of centrifugal water pump the most according to claim 2, it is characterised in that: described current inductive switch includes water flow switch impeller, is fixed on the magnetic devices above water flow switch impeller;Described water flow switch wheel rotation is arranged on the inwall of outlet, and magnetic devices is positioned in current inductive switch upper cover;Controlling to be provided with Hall element in device, during water flow switch wheel rotation, Hall element passes the signal along in control circuit board according to changes of magnetic field.
A kind of centrifugal water pump the most according to claim 2, it is characterised in that: described machine barrel uses BMC once injection moulding, and pump head uses plastic material disposal molding.
A kind of centrifugal water pump the most according to claim 2, it is characterised in that: described current inductive switch includes the fixed support being arranged in pump head outlet;Described fixed support slides and is provided with magnetic devices;One end of described magnetic devices is offseted by spring with support bracket fastened one end;Described current inductive switch upper cover is provided with Hall element;Current by time magnetic devices be compressed near Hall element due to the effect of current, Hall element passes the signal along in control circuit board according to changes of magnetic field.
6. according to a kind of centrifugal water pump described in claim 3 or 5, it is characterised in that: described magnetic devices is permanent magnetic iron, and described control device includes frequency-variable controller, and described frequency-variable controller controls motor.
A kind of centrifugal water pump the most according to claim 1, it is characterised in that: described supply unit includes plug and Chinese character pin-shaped socket, and socket is positioned on control device, and the bottom surface of socket is provided with inserted sheet;Described plug includes the plug overcoat in dismantled and assembled cooperation and plug inner sleeve each other;Plug inner sleeve and plug jacket internal form cavity, and cavity inside is provided with terminal plastic, terminal, contact chip;Terminal plastic and the inwall of plug inner sleeve are dismantled and assembled fixing;Terminal is located at inside terminal plastic;One end of terminal is connected with power line;Contact chip includes connecting portion and clamping part;Connecting portion is connected with terminal, and retaining part is in jack;Plug overcoat end face offers screwed hole, and screwed hole is common to power line mutually and stretches into cavity;Also include the thread head coordinated with screwed hole;The outer wall of plug inner sleeve is provided with water proof ring;Described plug also includes power line and spigot seal structure, and this sealing structure includes wire clamp, rubber ring;Thread head is provided with endoporus, and wire clamp is located in the endoporus of thread head, and wire clamp includes that movable I portion, movable II portion, movable I portion, movable II portion are circumferentially distributed and are spaced setting;Rubber ring in the lower section of wire clamp between thread head and plug outer casing inner wall;Putting in described plug and be provided with sealing gasket, when plug inner sleeve inserts plug overcoat, the cavity wall of the sealing gasket above plug inner sleeve and plug overcoat is close to form sealing.
8. a water circulation system, it is characterised in that: including the centrifugal water pump as described in claim 1-7 any one, this circulation also includes water source end, user water side, check valve, water heater;Described water source end is connected with the water inlet end of water heater and the cooling water outlet pipeline of user water side respectively, and the water side of water heater is connected with the water inlet conduit of centrifugal water pump, and the outlet of centrifugal water pump is connected with the hot-water outlet conduits of user water side;User water side is connected with the water inlet end pipeline of water heater;Being additionally provided with a lateral on pipeline between the hot water outlet of centrifugal water pump and user water side, this lateral is connected on the pipeline between the cooling water outlet of water source end and user water side by check valve.
9. a water circulation system, it is characterised in that: including the centrifugal water pump as described in claim 1-7 any one, this circulation also includes water source end, user water side, water heater;Described water source end is connected with the water inlet end of water heater and the cooling water outlet pipeline of user water side respectively, and the water side of water heater is connected with the water inlet conduit of centrifugal water pump, and the outlet of centrifugal water pump is connected with the hot-water outlet conduits of user water side;User water side is connected with the water inlet end pipeline of water heater;Being additionally provided with a lateral on pipeline between the hot water outlet of centrifugal water pump and user water side, this lateral is connected on the pipeline between water source end and the water inlet end of water heater.
CN201410270812.8A 2014-06-05 2014-06-05 Water circulation system and centrifugal water pump CN104061171B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410270812.8A CN104061171B (en) 2014-06-05 2014-06-05 Water circulation system and centrifugal water pump

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Application Number Priority Date Filing Date Title
CN201410270812.8A CN104061171B (en) 2014-06-05 2014-06-05 Water circulation system and centrifugal water pump

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CN104061171A CN104061171A (en) 2014-09-24
CN104061171B true CN104061171B (en) 2016-10-26

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104612949B (en) * 2014-11-25 2016-05-11 界首市友谊水泵厂 Adopt the energy-saving water pump of VFC

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CN201344141Y (en) * 2008-10-28 2009-11-11 江苏环力科技发展有限公司 Fully-automatic control device for water pump
CN101988515A (en) * 2009-07-30 2011-03-23 上海新沪电机厂有限公司 Automatic anhydrous protection control method for pipeline canned motor pump
CN202034301U (en) * 2011-04-06 2011-11-09 苏州沃达园林机械有限公司 Electronic control water flow switch
CN202597131U (en) * 2012-05-19 2012-12-12 浙江利欧股份有限公司 Dry running protection control device of turbine type water pump
CN202971222U (en) * 2012-12-25 2013-06-05 珠海华谷电机有限公司 Intelligent sensing submersible pump
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CN203500042U (en) * 2013-09-03 2014-03-26 上海人民企业集团水泵有限公司 Cutting-type sewage submersible electric pump

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