Electronic anti-slip protector
An anti-idling and protector technology, applied in emergency protection circuit devices, protection for under-load or no-load response, electrical components, etc. Magnetic rotor high temperature demagnetization and other problems, to achieve high use value, avoid accidents, avoid wear and losses
Inactive Publication Date: 2009-06-24
王兵栓 +1
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Problems solved by technology
However, when the magnetic pump is evacuated, it is easy to cause high-temperature demagnetization of the magnetic rotor and damage to the bearing, as well as large wear of the isolation sleeve, which not only causes a large safety hazard in production, but also reduces the service life of the magnetic pump.
[0003] The existing protection technology mainly uses the method of adding cooling devices, which cannot fundamentally solve the idling problem of the magnetic pump
Method used
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[0015] The present invention will be further described below in conjunction with the accompanying drawings of the embodiments.
[0016] Such as figure 1 As shown, the magnetic pump control circuit is equipped with a switch, a relay switch and a current transformer, the control button and the current transformer are connected to the input terminal of the controller, the control terminal of the relay contact is connected to the output terminal of the controller, and one phase of the magnetic pump control circuit Provides power to the controller.
[0017] Such as figure 2 As shown, the comparative amplifier circuit includes an integrated operational amplifier U1, a logic chip U2, and a circuit composed of resistors R1-R20, capacitors C1-C6, inductor B1, diodes D1-D5, Zener diodes ZD1, ZD2, and potentiometers RP1-RP3. Peripheral circuit composition. Resistors R2 and R3 are connected between pins 13 and 14 of the integrated operational amplifier U1D, pin 14 is connected to pin ...
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The invention relates to an electronic anti-idling protector, which is mainly used for the anti-idling protection of a magnetic pump, including a control button and a relay contact, and is characterized in that a controller and a current transformer are arranged, and the control button and the current transformer are connected to the controller input terminal, the relay contact is connected to the magnetic pump control circuit, and the control terminal of the relay contact is connected to the output terminal of the controller. The electronic anti-idling protector of the present invention is controlled by electronic components, has small volume, high sensitivity and reliable performance. By setting the controller and current transformer, the control button and the current transformer are connected to the input end of the controller, and the relay contacts are connected to the output of the controller. end and magnetic pump control circuit. When the motor load is lightened and the motor current is reduced due to the vacuuming of the magnetic drive pump, the protector operates to drive the relay contact to cut off the control circuit of the magnetic drive pump, avoiding the wear and loss of the pump head and the isolation sleeve caused by the long-term idling of the magnetic drive pump, thereby avoiding accidents.
Description
technical field [0001] The invention relates to an electronic anti-idling protector, which is mainly used for the anti-idling protection of a magnetic pump. Background technique [0002] The magnetic pump drives the impeller in the pump body to rotate through the permanent magnetic force between the inner and outer magnetic rotors of the magnetic seal drive, and ensures that the pump medium does not leak through the static isolation sleeve installed between the inner and outer magnetic rotors. The pump rotor is composed of an inner magnetic rotor, a pump shaft and an impeller, supported by front and rear radial bearings, and its axial displacement is controlled by an axial force balance mechanism. Magnetic pumps are widely used to transport flammable, explosive and toxic media. However, when the magnetic pump is evacuated, it is easy to cause high temperature demagnetization of the magnetic rotor and damage to the bearing, as well as greater wear of the isolation sleeve, wh...
Claims
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IPC IPC(8): H02H7/08H02H3/12
Inventor 王兵栓张光胜刘其成
Owner 王兵栓