CN2214046Y - Motor protection device for water pump - Google Patents
Motor protection device for water pump Download PDFInfo
- Publication number
- CN2214046Y CN2214046Y CN 94248841 CN94248841U CN2214046Y CN 2214046 Y CN2214046 Y CN 2214046Y CN 94248841 CN94248841 CN 94248841 CN 94248841 U CN94248841 U CN 94248841U CN 2214046 Y CN2214046 Y CN 2214046Y
- Authority
- CN
- China
- Prior art keywords
- electromagnetic contactor
- motor
- water
- induction device
- water induction
- 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.)
- Expired - Fee Related
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- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model relates to an electromotor protector, particularly to a protector for a water pump motor, which is mainly composed of an electromagnetic contactor, a main switch, a start switch, a water inductor, etc., wherein the water inductor inducts the volume and the existence or the nonexistence of water discharged from the water outlet of a water pump; then, the electromagnetic contactor is controlled in time, and an electrical source of the motor is cut off so as to prevent motor wire bags from being burnt out. The protector has the advantages of accurate and reliable motion, convenient and simple use and low cost.
Description
The utility model relates to a kind of electric motor protective device, is meant a kind of protective device that is used for pump motor especially.
At present, a large amount of motor (as immersible pump, reservoir, pumping station etc.) that are used with various fluid pumps because the environment for use difference adds the various artificial influences that reach objective factor, in its concrete work, usually burn out the situation of motor.At this situation, engineers and technicians added magnetic starting switch before motor, and air switch etc. are used for preventing the situation that motor burns when work; But these several methods commonly used only are when electric current sharply strengthens in the motor lines bag, utilize the thermal effect principle of electric current to cut off the motor power supply circuits.Guarantee that with this motor windings is not burnt.But in real work, usually have scarce phase of three-phase electricity or switch, insurance loose contact scarce a situation of electricity mutually, also have owing to other reason; motor speed is low excessively; cause the water pump streamflow very low, motor is under above-mentioned several situations, and present several guard methods are that solution is bad.Still can cause the motor line bag to burn.
It is a kind of according to the pump motor rotating speed that the purpose of this utility model is to provide at the deficiencies in the prior art, causes the variation of water yield to control the protective device of motor then.
The purpose of this utility model is achieved through the following technical solutions: by electromagnetic contactor, master switch, starting switch, water induction device are formed, it is characterized in that: contact point one end of electromagnetic contactor is electrically connected with external power input, the other end connects the motor line bag, electromagnetic contactor line Bao Yiduan is connected with power input electricity one, the other end is serially connected with master switch, the water induction device, starting switch and water induction device and consecutive are connected in the electromagnetic contactor line bag loop, and another is connected this end and input electricity; The water induction device is provided in a side of the pump outlet place.
Wherein the water induction utensil has winding point, is serially connected in respectively in the electromagnetic contactor line bag circuit, and this winding point is a disrupted configuration usually.
Advantage of the present utility model is that whole device action accurately and reliably.Cut off the electricity supply fast, be about 3 seconds.Easy to use, with low cost, prevent effectively because the situation that various extraneous factors have caused the motor line bag to burn takes place.
Fig. 1, be circuit theory diagrams of the present utility model.
Below in conjunction with drawings and Examples the utility model is further described:
The utility model as shown in Figure 1,1 is motor, 2 is the motor power inlet wire, 3 is the contact of electromagnetic contactor, 4 is electromagnetic contactor, 5 is master switch, 6 is starting switch, 7 is the water induction device.The work electricity consumption of motor 1 is connected, is cut off by contact 3 controls of electromagnetic contactor 4, the line bag power supply of electromagnetic contactor 4 is got two-phase by appointing in the external power supply three-phase electricity, one tunnel serial connection electromagnetic contactor, 4 line bags, serial connection master switch 5, then be connected in series water induction device 7, starting switch 6 is gone here and there in the line bag loop of electromagnetic contactor 4 with water induction device 7 backs in parallel, is provided with winding point in the water induction device 7.This winding point is at ordinary times for disconnecting shape, and under the percussion of pump outlet place current, this winding point is connected.When no current impacted, this winding point was still for disconnecting (because of this contact is a prior art, does not draw the Therefore, omited).Water induction device 7 is located at the pump outlet place, joins with electric wire and contactor 4.
When work, connect master switch 5 earlier, connect starting switch 6 then, owing to connect the loop of electromagnetic contactor 4, motor 1 work drives water pump and supplies water, delivery port there are flowing out, and can disconnect this moment starting starting 6.Because in the line bag loop of electromagnetic contactor 4, start start 6 and water induction device 7 in parallel, and water induction device 7 is connected line bag loop after water outlet automatically, so electromagnetic contactor 4 still keeps work, motor 1 drive water pump to be rotated further.
Cause motor 1 rotating speed to reduce, slow down at input three-phase electricity phase shortage or other factors, even during stall, delivery port water outlet quantitative change very little even anhydrous, this moment, water induction device 7 contact disconnected immediately, caused electromagnetic contactor 4 line bag dead electricity.Promptly cut off the line bag power supply of motor 1, protected motor 1 can not burn out.
After fixing a breakdown, open master switch 5 again successively, starting switch 6 still can be reworked, handling safety, simple, accurately, power-off time fast, reliable.
Claims (2)
1, a kind of pump motor protective device, mainly by electromagnetic contactor, master switch, starting switch, the water induction device is formed, and it is characterized in that: contact point one end of electromagnetic contactor is connected with external power input electricity; The other end connects the motor line bag, electromagnetic contactor line Bao Yiduan is connected with power input electricity one, the other end is serially connected with master switch, water induction device, and starting switch and water induction device and consecutive are connected in the line bag loop of electromagnetic contactor, and another is connected this end and input electricity; The water induction device is provided in a side of the pump outlet place.
2, a kind of pump motor protective device according to claim 1 is characterized in that described water induction device is provided with winding point, is serially connected in respectively in the electromagnetic contactor line bag loop, and this winding point is a disrupted configuration usually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94248841 CN2214046Y (en) | 1994-12-30 | 1994-12-30 | Motor protection device for water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94248841 CN2214046Y (en) | 1994-12-30 | 1994-12-30 | Motor protection device for water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2214046Y true CN2214046Y (en) | 1995-11-29 |
Family
ID=33853611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94248841 Expired - Fee Related CN2214046Y (en) | 1994-12-30 | 1994-12-30 | Motor protection device for water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2214046Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089140C (en) * | 1997-03-31 | 2002-08-14 | 李广成 | Automatic protector for water pump |
| CN102324875A (en) * | 2011-08-22 | 2012-01-18 | 昆山华冠商标印刷有限公司 | High-pressure water gun power supply control device |
-
1994
- 1994-12-30 CN CN 94248841 patent/CN2214046Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089140C (en) * | 1997-03-31 | 2002-08-14 | 李广成 | Automatic protector for water pump |
| CN102324875A (en) * | 2011-08-22 | 2012-01-18 | 昆山华冠商标印刷有限公司 | High-pressure water gun power supply control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |