CN2478229Y - Switching gear of air pump - Google Patents
Switching gear of air pump Download PDFInfo
- Publication number
- CN2478229Y CN2478229Y CN 01219413 CN01219413U CN2478229Y CN 2478229 Y CN2478229 Y CN 2478229Y CN 01219413 CN01219413 CN 01219413 CN 01219413 U CN01219413 U CN 01219413U CN 2478229 Y CN2478229 Y CN 2478229Y
- Authority
- CN
- China
- Prior art keywords
- electromagnetic relay
- pressure valve
- air
- motor
- air pump
- 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
Links
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model pertains to an air pump switch device, which comprises an air-pressure valve and an electromagnetic relay, wherein one ends of the pneumatic switch of the hydraulic valve and the coil of the electromagnetic relay are connected in series; the other ends of the pneumatic switch and the electromagnetic relay coil are respectively provided with a lead-out terminal. As the two lead-out terminals of the device can be respectively connected with the two phase of the tri-phase power supply A, B and C, so as to connect the contactor of the electromagnetic relay into the loop wherein the tri-phase power supply and the tri-phase motor are connected. Thereby the air-pressure valve controls the electromagnetic relay and then the electromagnetic relay controls the motor to switch on/off, thereby avoiding the accident of motor burning high likely caused by direct control of the motor by the air-pressure valve.
Description
The utility model belongs to a kind of control element, particularly a kind of air pump switch device.
Using in relevant industry at present when having the air pump of three phase mains, all is to adopt air valve as the control air pump with the startup of motor, the element that stops.And for air valve, to open, stop to cause motor bridging contact one to contact easily when frequent its push rod is stuck bad for inconsistent or air pump when its two regulating spring pressure.It is big to add when the air pump starting under load electric motor starting electric current, happens occasionally so burn the accident of motor.
The purpose of this utility model provides a kind of usefulness makes the safer air pump switch device of control electric motor starting to overcome the deficiencies in the prior art.
The purpose of this utility model is to realize like this, promptly be that this device includes an air pressure valve, electromagnetic relay and shell, described air pressure valve and electromagnetic relay are connected on the shell, one end of the jettron of described air pressure valve is connected with the coil of electromagnetic relay, and the other end of jettron and the other end of electromagnetic relay coil have leading-out terminal respectively.
Advantage of the present utility model is: because can be with the leading-out terminal of the air pressure valve jettron in this device and the leading-out terminal of electromagnetic contactor coil, join with the two-phase of three phase mains A, B, C respectively, and the contact contact of electromagnetic relay is concatenated in three phase mains and the loop that three phase electric machine links to each other.Control electromagnetic relay with air pressure valve like this, again opening, stopping by electromagnetic relay control motor.Motor opens, the stopping time thereby avoided directly controlling with air pressure valve since two regulating spring pressure of air valve are inconsistent or air pump to open, stop to cause motor bridging contact one to contact easily when frequent its push rod is stuck bad.The electric motor starting electric current is big when running into the air pump starting under load again, finally causes the generation of burning motor accident problem.
Be described in further detail below in conjunction with embodiment:
Fig. 1 the utility model key wiring diagram
Key wiring diagram when Fig. 2 uses the utility model
As shown in Figure 1, air pressure valve 11, thermal relay 12 and electromagnetic relay 13 are fixedly mounted on the shell 1.The jettron 6 of air pressure valve 11 is connected in series with the coil 8 of electromagnetic relay 13 with after the normally closed contact 7 of thermal relay 12 is connected in series again.The other end of the jettron 6 of air pressure valve 11 and the coil 8 of electromagnetic relay 13 is leading-out terminal 9 and 10 respectively.
The A of three phase mains A, B, C is connected on the leading-out terminal 9 as shown in Figure 2, and B then is connected on the leading-out terminal 10 mutually.In addition, three phase mains A, B, C be contact 3 by air switch 2, above-mentioned electromagnetic relay 13 and thermal relay 12 major loop 4, be connected in series mutually with three phase electric machine 5.
Situation as mentioned above in addition, when the A of three phase mains A, B, C was concatenated on the leading-out terminal 9 mutually, B was connected to working zero line mutually or C goes up mutually and leading-out terminal 10 also can be free of attachment to.
Claims (2)
1. air pump switch device, it is characterized in that it includes an air pressure valve, electromagnetic relay and shell, described air pressure valve and electromagnetic relay are connected on the shell, one end of the jettron of described air pressure valve is connected with the coil of electromagnetic relay, and the other end of described jettron and the other end of electromagnetic relay coil have leading-out terminal respectively.
2. air pump switch device according to claim 1 is characterized in that also being connected in series the normally closed contact of a thermal relay in the coil series circuit of the jettron of described air pressure valve and electromagnetic relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01219413 CN2478229Y (en) | 2001-04-11 | 2001-04-11 | Switching gear of air pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01219413 CN2478229Y (en) | 2001-04-11 | 2001-04-11 | Switching gear of air pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2478229Y true CN2478229Y (en) | 2002-02-20 |
Family
ID=33637249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01219413 Expired - Fee Related CN2478229Y (en) | 2001-04-11 | 2001-04-11 | Switching gear of air pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2478229Y (en) |
-
2001
- 2001-04-11 CN CN 01219413 patent/CN2478229Y/en not_active Expired - Fee Related
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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 |