CN105252021A - Feeder intelligent frequency converting control device - Google Patents
Feeder intelligent frequency converting control device Download PDFInfo
- Publication number
- CN105252021A CN105252021A CN201510771585.1A CN201510771585A CN105252021A CN 105252021 A CN105252021 A CN 105252021A CN 201510771585 A CN201510771585 A CN 201510771585A CN 105252021 A CN105252021 A CN 105252021A
- Authority
- CN
- China
- Prior art keywords
- feeder
- oil
- control device
- frequency
- intelligent frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
Abstract
The invention relates to a feeder intelligent frequency converting control device. The feeder intelligent frequency converting control device comprises a feeder intelligent frequency converting control device body connected with a feeder; the feeder intelligent frequency converting control device body is provided with a control panel, a motor, a pressure sensor, an oil pump and a frequency conversion module; and the pressure sensor and the frequency conversion module are connected with the control panel, the frequency conversion module is connected with the motor, and a rotating shaft of the motor is connected with the oil pump. The feeder intelligent frequency converting control device has an intelligent frequency converting control function, the rotating speed of the motor and the rotating speed of the oil pump are controlled by the pressure sensor, the control panel and the frequency conversion module according to the working needs and the requirements of the feeder of a lathe, and the feeding pressure of the feeder of the lathe is stabilized. The feeder intelligent frequency converting control device has the functions of feeding pressure setting, intelligent frequency converting feeding pressure control, feeding and returning delayed switching, automatic returning, starving intelligent reminding, fault detection and automatic alarming and the like. The feeder intelligent frequency converting control device has the beneficial effects of being simple and reasonable in structure, convenient to use, environment-friendly, safe and stable, and saving energy.
Description
Technical field
The present invention relates to a kind of feeder for lathe, particularly a kind of intelligent frequency-conversion control device of feeding machine for lathe.
Background technology
The feeding machine for lathe of prior art is all adopt simple electric control panel, control button, contactor to control to the feeding and the material returned that realize feeder, then adopts the mode of overflow valve manual adjustments to realize steady pressure in Stress control.Mostly there is following shortcoming in these control modes: feeding and the mutual of the material returned switch without time delay, easily damages motor and oil pump or shorten its service life; Power consumption and fuel consumption large; Operation noise is large; There is no fault detect auto-alarm function; The short material phenomenon of easy appearance; Maintenance trouble etc.Therefore, be necessary to make further improvements.
Summary of the invention
Object of the present invention aims to provide the feeder intelligent frequency-conversion control device of a kind of simple and reasonable, easy to use, energy-conserving and environment-protective, safety and stability, to overcome weak point of the prior art.
By a kind of feeder intelligent frequency-conversion control device that this object designs, comprise the feeder intelligent frequency-conversion control device connecting feeder; It is characterized in that: described feeder intelligent frequency-conversion control device is provided with control panel, motor, pressure sensor, oil pump and frequency-variable module; Described pressure sensor and frequency-variable module connection control plate respectively, described frequency-variable module connects motor again, and the rotating shaft of described motor connects oil pump.
Separate component room and accumulator is had by baffle for separating in described feeder intelligent frequency-conversion control device, described control panel, motor, pressure sensor and frequency-variable module are placed in component room respectively, described oil pump is placed in accumulator, and wherein the rotating shaft of motor to be stretched in accumulator through dividing plate and is connected with oil pump.
Described pressure sensor is installed on oil path block, and this oil path block connects the oil-out of oil pump by oil pipe; The change of oil pressure in oil pump is converted to standard electric signal and sends control panel to by pressure sensor.
Described frequency-variable module is provided with status displays, and stores FREQUENCY CONTROL program, and simultaneous display output parameter.
Described control panel is provided with duty display, and comprises feeding, stopping, the material returned and several function setting keys, and described control panel also stores intelligent control program, simultaneous display duty and/or running parameter.
Be provided with transformer in described component room, this transformer is annular isolation transformer.
Be connected to each other by oil return pipe, signal pipe and force pipe between described feeder and feeder intelligent frequency-conversion control device, oil return pipe, signal pipe and force pipe are separate, non-interference;
Wherein, described oil return pipe one end connects the oil pooling hood on feeder, and the other end connects the accumulator of feeder intelligent frequency-conversion control device;
Described signal pipe one end connects the oil transportation channel in feeder, the material returned switch of other end attaching parts indoor;
Described force pipe one end connects the oil transportation channel in feeder, the oil path block of other end attaching parts indoor.
Described feeder intelligent frequency-conversion control device is provided with sieves, and in oil return pipe, the oil of backflow is first through the filtration of sieves, then returns oil storage indoor storage.
Described oil path block is also provided with safety valve.
The oil inlet end of described oil pump is connected with check valve and filtration core by T-shaped oil pipe, and check valve and filtration core are independently of one another, non-interference.
The present invention has intelligent frequency-conversion controlling functions, according to the need of work of feeding machine for lathe and requirement, can be controlled the rotating speed of motor and oil pump by pressure sensor, control panel and frequency-variable module, thus stablize the feeding pressure of feeding machine for lathe.User can varying in size according to lathe process material specification, sets itself feeding pressure on control panel, when lathe need feeding moment this device energy auto-controlled motor and oil pump accelerate immediately pressurization, effective raising feeding efficiency and prevent short material phenomenon, fault detect auto-alarm function can also be fixed a breakdown by reminding user in time, thus the intelligentized control method realizing feeding machine for lathe also significantly reduces the power consumption of feeding machine for lathe, is applicable to the automatic control of feeding machine for lathe.The feeder intelligent frequency-conversion control device of invention, there is feeding pressure setting, intelligent frequency-conversion controls feeding pressure, feeding and material returned time delay switching, automatic material returning, scarcely expect the function such as intelligent reminding, fault detect automatic alarm, and have the feature of simple and reasonable, easy to use, energy-conserving and environment-protective, safety and stability.
Accompanying drawing explanation
Fig. 1 is the feeder feeding hydraulic flow figure of one embodiment of the invention.
Fig. 2 is the feeder material returned hydraulic flow figure of one embodiment of the invention.
Fig. 3 is the circuit theory diagrams of one embodiment of the invention.
Fig. 4 is the decomposition texture schematic diagram of one embodiment of the invention.
In figure: 01 is safety guard, 02 is breaker, 03 is transformer, 04 is control panel, and 05 is motor, and 06 is pressure sensor, 07 is shaft coupling, 08 is pump seat, and 09 is oil pump, and 10 is check valve, 11 is fuel reserve tank, 12 is filtration core, and 13 is oil path block, and 14 is safety valve, 15 is sieves, 16 is Pressure gauge, and 17 is casing, 18 for material returned switch, 19 be frequency-variable module, 20 for charging ram, 21 for processing bar, 22 for oil pooling hood, 23 for oil return pipe, 24 for signal pipe, 25 for force pipe, 26 for front bearing, 27 be rear support.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
See Fig. 1-Fig. 4, this feeder intelligent frequency-conversion control device, comprise the feeder intelligent frequency-conversion control device B connecting feeder A, this feeder intelligent frequency-conversion control device B is provided with control panel 4, motor 5, pressure sensor 6, oil pump 9 and frequency-variable module 19; Pressure sensor 6 and frequency-variable module 19 connection control plate 4 respectively, frequency-variable module 19 is control connection motor 5 again, and the rotating shaft of motor 5 connects oil pump 9.This structure according to the need of work of feeding machine for lathe and requirement, can be controlled the rotating speed of motor 5 and oil pump 9, thus stablizes the feeding pressure of feeding machine for lathe A by pressure sensor 6, control panel 4 and frequency-variable module 19.
Specifically:
Feeder A comprises charging ram 20, processing bar 22 and oil pooling hood 24, also comprises the rear support 21 for supporting and front bearing 23.
Feeder intelligent frequency-conversion control device B profile is erect-type cuboid, is made up of the casing 17 on top and the fuel reserve tank 11 of bottom, each other by baffle for separating, makes forming member room in casing 17, forms the accumulator being used for storage liquid force feed in fuel reserve tank 11.Wherein, component room is divided into again the electrical equipment room on upper strata and the Hydraulic Elements room of lower floor, and the open top of electrical equipment room is arranged, and is equipped with upper-turn-type door-plate; Hydraulic Elements room is equipped with front and back door-plate.
Furtherly: control panel 4, motor 5, pressure sensor 6 and frequency-variable module 19 are placed in component room respectively, and oil pump 9 is placed in accumulator, wherein the rotating shaft of motor 5 to be stretched in accumulator through dividing plate and is connected with oil pump 9.Concrete, control panel 4 is arranged at casing 17 surface, for user's direct control; Frequency-variable module 19 is placed in electrical equipment indoor; Motor 5 and pressure sensor 6 are placed in Hydraulic Elements indoor.
Pressure sensor 6 is installed on oil path block 13, and this oil path block 13 connects the oil-out of oil pump 9 by oil pipe; The change of oil pressure in oil pump 9 is converted to standard electric signal and sends control panel to by pressure sensor 6, realizes oil pressure monitoring and oil pressure automatic control function.
Frequency-variable module 19 is provided with status displays, and stores FREQUENCY CONTROL program, according to the control instruction of control panel 4, can stablize and correctly export appropriate frequency, and simultaneous display output parameter, make motor 5 smooth operation.
Control panel 4 is provided with duty display, and comprises feeding, stopping, the material returned and several function setting keys, can according to the needs of user parameters voluntarily; Control panel 4 also stores intelligent control program, automatically adjustment frequency conversion parameter, and simultaneous display duty and/or running parameter, make frequency-variable module 19 stable output in appropriate frequency.
Be provided with transformer 3 in component room, this transformer 3 is annular isolation transformer, the safety effect of main starting voltage conversion and isolated from power.
Be connected to each other by oil return pipe 25, signal pipe 26 and force pipe 27 between feeder A and feeder intelligent frequency-conversion control device B, oil return pipe 25, signal pipe 26 and force pipe 27 are separate, non-interference; Wherein, oil return pipe 25 one end connects the oil pooling hood 24 on feeder A, and the other end connects the accumulator of feeder intelligent frequency-conversion control device B; Signal pipe 26 one end connects the oil transportation channel in feeder A, the material returned switch 18 of other end attaching parts indoor; Force pipe 27 one end connects the oil transportation channel in feeder A, the oil path block 13 of other end attaching parts indoor.
Furtherly, feeder intelligent frequency-conversion control device B is provided with sieves 15, and in oil return pipe 25, the oil of backflow is first through the filtration of sieves 15, then returns oil storage indoor storage.Sieves 15 is fixed on dividing plate.
Material returned switch 18 is placed in electrical equipment indoor, and it automatically can detect feeding and complete and send switching signal and send control panel 4 to, realizes automatic material returning controlling functions.
Oil path block 13 is also provided with safety valve 14 and Pressure gauge 16, oil path block 13 pipe joint is connected with force pipe 27, and when oil pressure exceedes safety value, safety valve 14 can be opened automatically, and release oil pressure of draining the oil guarantees safety; Pressure gauge directly obtains pressure reading for user.
The oil inlet end of oil pump 9 is connected with check valve 10 and filtration core 12 by T-shaped oil pipe, and check valve 10 and filtration core 12 are independently of one another, non-interference.
Above-mentioned sieves 15 and filtration core 12 are respectively the screen cloth of stainless steel material, and the main clean filtration being used as hydraulic oil, is divided into sieves 15 primary filter and filtration core 12 fine filtering, keep the clean clean of hydraulic oil, guarantee the safe handling of oil pump 9.
In addition, electrical equipment indoor are also provided with breaker 2 for power-off protection, and for the safety guard 1 of covering protection electrical equipment.Also be provided with shaft coupling 7 and pump seat 8 in accumulator, coordinate respectively and be assemblied between motor 5 and oil pump 9.
Essential core technology of the present invention is made up of hydraulic control part and these two parts of intelligent frequency-conversion electric control system, wherein, hydraulic control part mainly comprises: the hydraulic fittings such as casing 17, fuel reserve tank 11, oil pump 9, oil path block 13, safety valve 14, Pressure gauge 16, sieves 15, filtration core 12, check valve 10; Intelligent frequency-conversion electric control system mainly comprises: the electric fittings such as motor 5, breaker 2, transformer 3, frequency-variable module 19, control panel 4, pressure sensor 6, material returned switch 18.
This device electric control system is made up of three parts:
Part I is: once control (namely high voltage controls), main element comprises: breaker 2, transformer 3, frequency-variable module 19, motor 5;
Part II is: linear quadratic control (namely low-voltage controls), and main element comprises: control panel 4, pressure sensor 6, material returned switch 18;
Part III is: computer program controls (i.e. computer write intelligent control program).
Its operation principle is as follows:
1, the self-feeding of Based Intelligent Control feeder
See Fig. 1, Fig. 3 and Fig. 4, after operating personnel press the feeding key of control panel 4, feeding function starts immediately, control panel 4 constantly sends assisted instruction to frequency-variable module 19, frequency-variable module 19 output frequency slowly raises, the rotating speed of the motor 5 of connection frequency-variable module 19 is also followed and is slowly raised and drive oil pump 9 to rotate forward, and squeezes into feeding in oil-bath type feeder by after the hydraulic oil pressurization in fuel reserve tank 11 by force pipe.The frequency that frequency-variable module 19 exports constantly rises, oil pressure in force pipe 27 also can constantly raise, the change of oil pressure is converted to standard electric signal and sends control panel 4 to by pressure sensor 6, automatically frequency conversion parameter is adjusted again by intelligent control program, make frequency-variable module 19 stable output in appropriate frequency, thus motor 5 low speed is steadily just operated, guarantee that oil pressure is stabilized in the safe pressure scope of setting.
When numerically controlled lathe needs the moment of feeding, pressure sensor 6 detects the change of oil pressure, sends signal to control panel 4 immediately, is raised the output frequency of frequency-variable module 19 by intelligent control program fast, motor 5 adds to turn makes oil pressure raise, thus guarantees the reliability of lathe feeding.
2, the automatic material returning of Based Intelligent Control feeder
See Fig. 2-Fig. 4, when feeder feeding is complete, feeder signal pipe has oil pressure and passes to material returned switch 18, material returned switch 18 action trigging control plate 4 starts timing, the automatic startup material returned function of 7 rear control plate 4 in second, frequency-variable module 19 exports highest frequency (50Hz), motor 5 full-speed operation also drives oil pump 9 to reverse, fast the hydraulic oil in oil-bath type feeder is extracted out by force pipe, charging ram is also inhaled by hydraulic oil and is return oil-bath type feeder tail end, thus realize automatically returning charging ram function and waiting for the next time of feeding again, material returned function stops automatically.
Above-mentioned is preferred version of the present invention, shows and describes general principle of the present invention, principal character and advantage of the present invention.Those skilled in the art should understand the present invention and not be restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (10)
1. a feeder intelligent frequency-conversion control device, comprises the feeder intelligent frequency-conversion control device (B) connecting feeder (A); It is characterized in that: described feeder intelligent frequency-conversion control device (B) is provided with control panel (4), motor (5), pressure sensor (6), oil pump (9) and frequency-variable module (19); Described pressure sensor (6) and frequency-variable module (19) connection control plate (4) respectively, described frequency-variable module (19) connects again motor (5), and the rotating shaft of described motor (5) connects oil pump (9).
2. feeder intelligent frequency-conversion control device according to claim 1, it is characterized in that: in described feeder intelligent frequency-conversion control device (B), have separate component room and accumulator by baffle for separating, described control panel (4), motor (5), pressure sensor (6) and frequency-variable module (19) are placed in component room respectively, described oil pump (9) is placed in accumulator, and wherein the rotating shaft of motor (5) to be stretched in accumulator through dividing plate and is connected with oil pump (9).
3. feeder intelligent frequency-conversion control device according to claim 2, it is characterized in that: described pressure sensor (6) is installed on oil path block (13), and this oil path block (13) connects the oil-out of oil pump (9) by oil pipe; The change of oil pump (9) interior oil pressure is converted to standard electric signal and sends control panel (4) to by pressure sensor (6).
4. feeder intelligent frequency-conversion control device according to claim 3, is characterized in that: described frequency-variable module (19) is provided with status displays, and stores FREQUENCY CONTROL program, and simultaneous display output parameter.
5. feeder intelligent frequency-conversion control device according to claim 4, it is characterized in that: described control panel (4) is provided with duty display, and comprise feeding, stopping, the material returned and several function setting keys, described control panel (4) also stores intelligent control program, simultaneous display duty and/or running parameter.
6. feeder intelligent frequency-conversion control device according to claim 5, it is characterized in that: be provided with transformer (3) in described component room, this transformer (3) is annular isolation transformer.
7. feeder intelligent frequency-conversion control device according to any one of claim 1-6, it is characterized in that: be connected to each other by oil return pipe (25), signal pipe (26) and force pipe (27) between described feeder (A) and feeder intelligent frequency-conversion control device (B), oil return pipe (25), signal pipe (26) and force pipe (27) are separate, non-interference;
Wherein, described oil return pipe (25) one end connects the oil pooling hood (24) on feeder (A), and the other end connects the accumulator of feeder intelligent frequency-conversion control device (B);
Described signal pipe (26) one end connects the oil transportation channel in feeder (A), the material returned switch (18) of other end attaching parts indoor;
Described force pipe (27) one end connects the oil transportation channel in feeder (A), the oil path block (13) of other end attaching parts indoor.
8. feeder intelligent frequency-conversion control device according to claim 7, it is characterized in that: described feeder intelligent frequency-conversion control device (B) is provided with sieves (15), in oil return pipe (25), the oil of backflow is first through the filtration of sieves (15), then returns oil storage indoor storage.
9. feeder intelligent frequency-conversion control device according to claim 8, it is characterized in that: described oil path block (13) is also provided with safety valve (14), oil path block (13) pipe joint is connected with force pipe (27).
10. feeder intelligent frequency-conversion control device according to claim 9, it is characterized in that: the oil inlet end of described oil pump (9) is connected with check valve (10) and filtration core (12) by T-shaped oil pipe, check valve (10) and filtration core (12) are independently of one another, non-interference.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510771585.1A CN105252021B (en) | 2015-11-11 | 2015-11-11 | Feeder intelligent frequency-conversion control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510771585.1A CN105252021B (en) | 2015-11-11 | 2015-11-11 | Feeder intelligent frequency-conversion control device |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105252021A true CN105252021A (en) | 2016-01-20 |
CN105252021B CN105252021B (en) | 2017-08-01 |
Family
ID=55092116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510771585.1A Active CN105252021B (en) | 2015-11-11 | 2015-11-11 | Feeder intelligent frequency-conversion control device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105252021B (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4423993A (en) * | 1981-10-22 | 1984-01-03 | Hardinge Brothers, Inc. | Retractable bar stock feeder |
CN2874018Y (en) * | 2006-04-04 | 2007-02-28 | 朱英杰 | Well head back pressure controller for petroleum production |
KR20080099075A (en) * | 2007-05-08 | 2008-11-12 | 주식회사 티에스테크 | Gantry loader |
CN101775827A (en) * | 2010-02-09 | 2010-07-14 | 陈立信 | Automatic constant-pressure variable boosting water feeder |
CN104128624A (en) * | 2013-12-20 | 2014-11-05 | 柳州万众汽车部件有限公司 | Automatic feeding control device |
CN104827058A (en) * | 2015-05-11 | 2015-08-12 | 广东骏驰科技股份有限公司 | Automatic feeding mechanism and feeding method of rod numerically controlled lathe |
CN205289749U (en) * | 2015-11-11 | 2016-06-08 | 佛山市宏达精工机械设备有限公司 | Feeder intelligence variable frequency control device |
-
2015
- 2015-11-11 CN CN201510771585.1A patent/CN105252021B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4423993A (en) * | 1981-10-22 | 1984-01-03 | Hardinge Brothers, Inc. | Retractable bar stock feeder |
CN2874018Y (en) * | 2006-04-04 | 2007-02-28 | 朱英杰 | Well head back pressure controller for petroleum production |
KR20080099075A (en) * | 2007-05-08 | 2008-11-12 | 주식회사 티에스테크 | Gantry loader |
CN101775827A (en) * | 2010-02-09 | 2010-07-14 | 陈立信 | Automatic constant-pressure variable boosting water feeder |
CN104128624A (en) * | 2013-12-20 | 2014-11-05 | 柳州万众汽车部件有限公司 | Automatic feeding control device |
CN104827058A (en) * | 2015-05-11 | 2015-08-12 | 广东骏驰科技股份有限公司 | Automatic feeding mechanism and feeding method of rod numerically controlled lathe |
CN205289749U (en) * | 2015-11-11 | 2016-06-08 | 佛山市宏达精工机械设备有限公司 | Feeder intelligence variable frequency control device |
Also Published As
Publication number | Publication date |
---|---|
CN105252021B (en) | 2017-08-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN205103386U (en) | High accuracy special type power supply monitoring system | |
CN201514560U (en) | Circuit of intelligent plastic case relay controller | |
CN202548583U (en) | Office safety and energy-saving control device | |
CN205289749U (en) | Feeder intelligence variable frequency control device | |
CN201988439U (en) | Safe and energy-saving circuit for paper shredder | |
CN203299597U (en) | High-efficient running-in device for breaker | |
CN105252021A (en) | Feeder intelligent frequency converting control device | |
CN203384018U (en) | Air compressor energy-saving cabinet control system | |
CN104944208A (en) | Synchronous air flotation system for cloth-paved tables | |
CN103618178B (en) | A kind of zero standby zero-power-consumption energy-saving socket | |
CN110820907A (en) | Embedded intelligent floor drain cleaning device | |
CN203886847U (en) | High-power high-pressure cleaning machine | |
CN203635078U (en) | Improved energy-saving reverse osmosis water purifier | |
CN206211583U (en) | The undervoltage protection of battery | |
CN104847641A (en) | Underground drainage pump automatic control device | |
CN204959873U (en) | A two frequency conversion automatic switching system for water supply equipment | |
CN203433316U (en) | Frequency-variable controller for household RO (Reverse Osmosis) membrane water purification unit | |
CN202145291U (en) | Infrared induction intelligent device of computer | |
CN203569645U (en) | Time delay control mechanism for kitchen garbage processor | |
CN107780461A (en) | Super High is without negative pressure relay water supply equipment | |
CN202030701U (en) | Water-sealed control device of furnace top of coke dry quenching furnace | |
CN201048115Y (en) | Trip safety protection device for emergent power supply of tank controller | |
CN201993604U (en) | Intermittent controller of oil pumping unit | |
CN202468256U (en) | Computer-control-based intermittent starter of oil pumping unit | |
CN209846482U (en) | Overweight alarm device reaches lift cupboard including this overweight alarm device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |