CN212250422U - Water pump start-stop circuit - Google Patents
Water pump start-stop circuit Download PDFInfo
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- CN212250422U CN212250422U CN202020724673.2U CN202020724673U CN212250422U CN 212250422 U CN212250422 U CN 212250422U CN 202020724673 U CN202020724673 U CN 202020724673U CN 212250422 U CN212250422 U CN 212250422U
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- state relay
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- pressure switch
- alternating current
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Abstract
The utility model discloses a water pump start-stop circuit, including solid state relay and mechanical type pressure switch, alternating current power supply's earth connection ground connection, one of them meets solid state relay's second pin of live wire and zero line of alternating current power supply, and the other one of alternating current power supply's live wire and zero line meets mechanical type pressure switch's a foot, and the other foot of mechanical type pressure switch meets solid state relay's fourth pin, and solid state relay's third pin is connected the second pin; one line of an alternating current power supply connected with one end of the mechanical pressure switch is connected with one wiring terminal of the motor in parallel, the other wiring terminal of the motor is connected with a first pin of the solid-state relay, and a third pin of the motor is connected with the first pin of the solid-state relay through a capacitor. The model of the solid-state relay is KSR-25AA for AC control and AC, a third pin and a fourth pin of the solid-state relay are input ends, and a first pin and a second pin of the solid-state relay are output ends. The invention solves the problem that the mechanical pressure switch in the existing self-priming pump is easy to be damaged by current impact.
Description
Technical Field
The invention belongs to the technical field of motor drive control, and particularly relates to a water pump start-stop circuit.
Background
At present, self priming pump by the wide application in each trade, the most critical accessory is mechanical type pressure switch in the self priming pump, and mechanical type pressure switch plays essential effect, all can increase mechanical type pressure switch in the usual product and control opening of water pump, after pressure drops to opening and stop outside the scope, the water pump starts, and it then stops to reach the settlement scope. In the real life, the household self-priming booster pump is provided with the mechanical pressure switch, the contact metal sheet is easy to damage when the mechanical pressure switch is started and stopped frequently, and the starting and stopping times of the water pump, namely the maintenance-free time length of the water pump, are determined by the switching times of the mechanical pressure switch. Therefore, how to protect the mechanical pressure switch becomes the key for the reliable operation of the water pump.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a water pump start-stop circuit aiming at the defects of the prior art, and the problem that the traditional mechanical pressure switch in the existing self-priming booster pump is easy to be damaged by strong electric spark impact is solved through the targeted design of the water pump start-stop control circuit.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a water pump start-stop circuit comprises a solid-state relay and a mechanical pressure switch, wherein a ground wire of an alternating current power supply is grounded, one of a live wire and a zero wire of the alternating current power supply is connected with a second pin of the solid-state relay, the other of the live wire and the zero wire of the alternating current power supply is connected with one pin of the mechanical pressure switch, the other pin of the mechanical pressure switch is connected with a fourth pin of the solid-state relay, and the third pin of the solid-state relay is connected with the second pin; one line of the alternating current power supply connected with one end of the mechanical pressure switch is connected with one wiring end of the motor in parallel, the other wiring end of the motor is connected with the first pin of the solid-state relay, and the third pin of the motor is connected with the first pin of the solid-state relay through a capacitor.
Preferably, the type of the solid-state relay is KSR-25AA for ac control, the third pin and the fourth pin of the solid-state relay are input terminals, and the first pin and the second pin of the solid-state relay are output terminals.
The invention has the following beneficial effects:
the invention provides a water pump starting and stopping circuit, aiming at optimizing and prolonging the service life of a mechanical pressure switch, and weakening the impact of strong electricity on the mechanical pressure switch by adopting a solid-state relay so as to prolong the contact life of a contact.
The solid-state relay is input from the input end through single-phase alternating current 220V, the opening and closing of a motor end circuit are controlled, the normal work of water pump accessories is guaranteed, the impact of strong electricity of the mechanical pressure switch is reduced, and therefore the contact frequency of a contact of the mechanical pressure switch is prolonged.
The solid-state relay does not have mechanical parts, the contact function is completed by a solid device, and the solid-state relay can work in the environment of high impact and vibration due to no moving parts, so that the solid-state relay has the excellent characteristics of long service life, high reliability and the like. The service life of the mechanical pressure switch of the water pump is greatly prolonged, and the reliability of the water pump is improved.
Drawings
Fig. 1 is a schematic circuit diagram of a water pump start-stop circuit according to the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship may be made without substantial changes in the technical contents.
Example 1
Referring to fig. 1, the water pump start-stop circuit comprises a solid-state relay and a mechanical pressure switch, wherein a grounding wire of an alternating current power supply is grounded, one of a live wire and a zero wire (blue (main wire)) of the alternating current power supply is connected with a second pin of the solid-state relay, the other one of the live wire and the zero wire (brown (secondary wire)) of the alternating current power supply is connected with one pin of the mechanical pressure switch, the other pin of the mechanical pressure switch is connected with a fourth pin of the solid-state relay through a cable (white wire), and a third pin of the solid-state relay is connected with the second pin through a cable (blue (hard wire)); one line of the alternating current power supply connected with the other end of the mechanical pressure switch is connected with one terminal of the motor in a brown (parallel) mode, the other terminal of the motor is connected with the first pin of the solid-state relay through a cable (a black (main line)) and a third pin of the motor is connected with the first pin of the solid-state relay through a capacitor.
Preferably, the type of the solid-state relay is KSR-25AA for ac control, the third pin and the fourth pin of the solid-state relay are input terminals, and the first pin and the second pin of the solid-state relay are output terminals.
The invention provides a water pump starting and stopping circuit, aiming at optimizing and prolonging the service life of a mechanical pressure switch, and weakening the impact of strong electricity on the mechanical pressure switch by adopting a solid-state relay so as to prolong the contact life of a contact.
The solid-state relay is input from the input end through single-phase alternating current 220V, the opening and closing of a motor end circuit are controlled, the normal work of water pump accessories is guaranteed, the impact of strong electricity of the mechanical pressure switch is reduced, and therefore the contact frequency of a contact of the mechanical pressure switch is prolonged.
The solid-state relay does not have mechanical parts, the contact function is completed by a solid device, and the solid-state relay can work in the environment of high impact and vibration due to no moving parts, so that the solid-state relay has the excellent characteristics of long service life, high reliability and the like. The service life of the mechanical pressure switch of the water pump is greatly prolonged, and the reliability of the water pump is improved.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (2)
1. The utility model provides a water pump opens stops circuit which characterized in that: the starting and stopping circuit comprises a solid-state relay and a mechanical pressure switch, a ground wire of an alternating current power supply is grounded, one of a live wire and a zero wire of the alternating current power supply is connected with a second pin of the solid-state relay, the other of the live wire and the zero wire of the alternating current power supply is connected with one pin of the mechanical pressure switch, the other pin of the mechanical pressure switch is connected with a fourth pin of the solid-state relay, and a third pin of the solid-state relay is connected with the second pin; one line of the alternating current power supply connected with one end of the mechanical pressure switch is connected with one wiring end of the motor in parallel, the other wiring end of the motor is connected with the first pin of the solid-state relay, and the third pin of the motor is connected with the first pin of the solid-state relay through a capacitor.
2. The water pump start-stop circuit according to claim 1, characterized in that: the type of the solid-state relay is KSR-25AA for alternating current control, a third pin and a fourth pin of the solid-state relay are input ends, and a first pin and a second pin of the solid-state relay are output ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020724673.2U CN212250422U (en) | 2020-05-06 | 2020-05-06 | Water pump start-stop circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020724673.2U CN212250422U (en) | 2020-05-06 | 2020-05-06 | Water pump start-stop circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212250422U true CN212250422U (en) | 2020-12-29 |
Family
ID=73997858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020724673.2U Active CN212250422U (en) | 2020-05-06 | 2020-05-06 | Water pump start-stop circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212250422U (en) |
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2020
- 2020-05-06 CN CN202020724673.2U patent/CN212250422U/en active Active
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